VER: 4.0.1-stable --> v1.0-stable

Co-authored-by: Lluciocc <Lluciocc@users.noreply.github.com>

.gitignore

@@ -29,4 +29,5 @@ limine
 **/.DS_Store
 .DS_Store
 /build/
-*.o
+*.o
+disk.img

Makefile

@@ -139,6 +139,7 @@ $(BUILD_DIR)/initrd.tar: $(KERNEL_ELF)
 	mkdir -p $(BUILD_DIR)/initrd/Library/images/gif
 	mkdir -p $(BUILD_DIR)/initrd/Library/Fonts/Emoji
 	mkdir -p $(BUILD_DIR)/initrd/Library/DOOM
+	mkdir -p $(BUILD_DIR)/initrd/Library/bsh
 	mkdir -p $(BUILD_DIR)/initrd/docs
 
 	@for f in $(SRC_DIR)/userland/bin/*.elf; do \
@@ -156,6 +157,9 @@ $(BUILD_DIR)/initrd.tar: $(KERNEL_ELF)
 	@for f in $(SRC_DIR)/fonts/Emoji/*.ttf; do \
 		if [ -f "$$f" ]; then cp "$$f" $(BUILD_DIR)/initrd/Library/Fonts/Emoji/; fi \
 	done
+	@if [ -f $(SRC_DIR)/library/bsh/bshrc ]; then cp $(SRC_DIR)/library/bsh/bshrc $(BUILD_DIR)/initrd/Library/bsh/; fi
+	@if [ -f $(SRC_DIR)/library/bsh/startup.bsh ]; then cp $(SRC_DIR)/library/bsh/startup.bsh $(BUILD_DIR)/initrd/Library/bsh/; fi
+	@if [ -f $(SRC_DIR)/library/bsh/boot.bsh ]; then cp $(SRC_DIR)/library/bsh/boot.bsh $(BUILD_DIR)/initrd/Library/bsh/; fi
 	@if [ -f $(SRC_DIR)/userland/games/doom/doom1.wad ]; then cp $(SRC_DIR)/userland/games/doom/doom1.wad $(BUILD_DIR)/initrd/Library/DOOM/; fi
 	@for f in $$(find docs -name '*.md' 2>/dev/null); do \
 		if [ -f "$$f" ]; then \
@@ -166,6 +170,7 @@ $(BUILD_DIR)/initrd.tar: $(KERNEL_ELF)
 	done
 	@if [ -f README.md ]; then cp README.md $(BUILD_DIR)/initrd/; fi
 	@if [ -f LICENSE ]; then cp LICENSE $(BUILD_DIR)/initrd/; fi
+	@if [ -f limine.conf ]; then cp limine.conf $(BUILD_DIR)/initrd/; fi
 	
 	cd $(BUILD_DIR)/initrd && COPYFILE_DISABLE=1 tar --exclude="._*" -cf ../initrd.tar *
 
@@ -201,12 +206,26 @@ clean:
 	rm -rf $(BUILD_DIR) $(ISO_DIR) $(ISO_IMAGE)
 	$(MAKE) -C $(SRC_DIR)/userland clean
 
-run: $(ISO_IMAGE)
+run-windows: $(ISO_IMAGE)
+	qemu-system-x86_64 -m 4G -serial stdio -cdrom $< -boot d \
+	    -smp 4 \
+		-audiodev coreaudio,id=audio0 -machine pcspk-audiodev=audio0 \
+		-vga std -global VGA.xres=1920 -global VGA.yres=1080 \
+		-drive file=disk.img,format=raw,file.locking=off 
+run-mac: $(ISO_IMAGE)
 	qemu-system-x86_64 -m 4G -serial stdio -cdrom $< -boot d \
 	    -smp 4 \
 		-audiodev coreaudio,id=audio0 -machine pcspk-audiodev=audio0 \
-		-netdev user,id=net0,hostfwd=udp::12346-:12345 -device virtio-net-pci,netdev=net0 \
 		-vga std -global VGA.xres=1920 -global VGA.yres=1080 \
 		-display cocoa,show-cursor=off \
 		-drive file=disk.img,format=raw,file.locking=off \
-		-cpu max
+		-cpu max
+run-linux: $(ISO_IMAGE)
+	qemu-system-x86_64 -m 4G -serial stdio -cdrom $< -boot d \
+	    -smp 4 \
+		-audiodev pa,id=audio0 -machine pcspk-audiodev=audio0 \
+		-vga std -global VGA.xres=1920 -global VGA.yres=1080 \
+		-display gtk,show-cursor=off \
+		-drive file=disk.img,format=raw,file.locking=off \
+		-cpu max
+

README.md

@@ -29,7 +29,7 @@ BoredOS is a x86_64 operating system featuring a custom Desktop Environment (DE)
 * **Multiboot2 Compliant:** Bootable on real hardware and modern emulators.
 * **Kernel Core:** Interrupt Descriptor Table (IDT) management and a robust syscall interface.
 * **Filesystem:** Full **FAT32** support for persistent and in-memory storage.
-* **Networking:** Includes the lwIP networking stack.
+* **Networking:** Includes the lwIP networking stack and a basic web browser.
 
 ### Graphical User Interface
 * **BoredWM:** A custom Window Manager with drag-and-drop, mouse-centered interaction.

docs/README.md

@@ -5,7 +5,7 @@
 
 ---
 
-Welcome to the internal documentation for BoredOS! This directory contains detailed guides on how the OS functions, how to build it, and how to develop applications for it.
+Welcome to the documentation for BoredOS! This directory contains detailed guides on how the OS functions, how to build it, and how to develop applications for it.
 
 ## 📚 Table of Contents
 
@@ -32,4 +32,12 @@ The SDK and toolchain guides for creating your own `.elf` userland binaries.
 -   [`Example Apps`](appdev/examples/README.md): A collection of sample C applications ranging from basic terminal output to advanced TCP networking.
 -   [`Grapher`](appdev/grapher.md): Full reference for the built-in mathematical graphing application — equation syntax, keyboard controls, architecture, and configuration.
 
+### 4. [Usage](usage/)
+General guides on how to interact with the OS.
+-   [`Booting`](usage/booting.md): How to use the Limine bootloader and toggle kernel boot flags like `-v`.
+-   [`Desktop`](usage/desktop.md): Window management, shortcuts, and desktop interaction.
+-   [`Lumos`](usage/lumos.md): Using the system-wide search (`Shift + Ctrl + Space`).
+-   [`Terminal`](usage/terminal.md): Command line interface, redirection, and common commands.
+-   [`Launching Apps`](usage/launching_apps.md): Ways to launch files and applications, plus a software overview.
+
 ---

docs/usage/booting.md

@@ -0,0 +1,33 @@
+# Booting BoredOS
+
+BoredOS uses the Limine bootloader, which provides a flexible way to configure the boot process and pass parameters to the kernel.
+
+## Boot Parameters
+
+You can modify system behavior at startup by passing specific boot flags.
+
+### Verbose Boot (`-v`)
+
+The `-v` flag enables the kernel console (`kconsole`) during the boot process. When enabled, the kernel will display detailed initialization logs on the screen. By default, this is often disabled in the included configuration for a cleaner "splash-only" boot experience.
+
+#### Toggling Verbose Boot at Runtime
+
+You can enable or disable the verbose boot log directly from the Limine boot menu without modifying the source files:
+
+1.  **Select Entry**: When the Limine boot menu appears, highlight the **BoredOS** entry.
+2.  **Edit**: Press `E` to enter the entry editor.
+3.  **Modify Flag**: Find the line containing `cmdline: -v`. 
+    -   To **Enable**: Remove the `#` character if the line is commented out (change `# cmdline: -v` to `cmdline: -v`).
+    -   To **Disable**: Add a `# ` at the start of the line.
+4.  **Boot**: Press `F10` to boot using the modified parameters.
+
+#### Persistent Configuration
+
+To change the default behavior permanently, modify the `limine.conf` file in the repository root before building the ISO:
+
+```conf
+/BoredOS
+    protocol: limine
+    path: boot():/boredos.elf
+    cmdline: -v
+```

docs/usage/desktop.md

@@ -0,0 +1,35 @@
+# Using the Desktop
+
+The BoredOS desktop environment is designed to be intuitive while providing powerful window management and icons for quick access to your files and applications.
+
+## Window Management
+
+BoredOS uses a stacking window manager (BoredWM) that allows you to overlap and organize multiple windows.
+
+### Basic Actions
+-   **Focus**: Click anywhere on a window to bring it to the front and make it the active window.
+-   **Move**: Click and drag the **title bar** (the top bar of the window) to reposition it on the screen.
+-   **Close**: Click the red traffic light close button in the top-left corner of the window.
+
+### System-wide Shortcuts
+BoredOS includes several global shortcuts to help you manage your workflow:
+-   **`Ctrl + P`**: Take a screenshot. The image will be saved to `/root/Desktop` as `screenshot.jpg`.
+-   **`Shift + Ctrl + Space`**: Toggle **Lumos** search (see the [Lumos guide](lumos.md)).
+
+## Desktop Icons
+
+Your desktop represents the contents of the `/root/Desktop` directory.
+
+-   **Launching**: Double-click an icon to open the file or launch the application.
+-   **Snapping**: Icons automatically snap to a grid for a clean look. You can toggle "Snap to Grid" and "Auto Align" in the [Settings app](../launching_apps.md).
+-   **Context Menu**: Right-click on the desktop background to create new files, folders, or refresh the layout.
+
+## The Bottom Dock
+
+The dock at the bottom of the screen provides quick shortcuts to your most-used applications, with for example:
+-   **Files**: Browse the entire filesystem.
+-   **Terminal**: Access the command-line interface.
+-   **Calculator / Notepad / Grapher**: Essential productivity tools.
+
+---
+[Return to Documentation Index](../README.md)

docs/usage/launching_apps.md

@@ -0,0 +1,31 @@
+# Launching Applications
+
+BoredOS provides several ways to launch applications and files, depending on your preferred workflow.
+
+## 1. Using the File Explorer
+
+The File Explorer is the primary way to navigate the filesystem and launch any `.elf` binary or associated document.
+
+1.  Open the **Explorer** from the dock or desktop.
+2.  Navigate to `/bin` for system applications or your own user folders.
+3.  **Double-click** any executable (`.elf`) to run it.
+4.  Standard files (like `.jpg` or `.txt`) will automatically open in their default viewer.
+
+## 2. Desktop Shortcuts and Icons
+
+Commonly used applications are placed directly on the desktop.
+
+-   Simply **Double-click** any icon on the desktop to launch it.
+-   You can also create desktop shortcuts by right-clicking on a file and selecting **"Create Shortcut"**.
+
+## 3. Using Lumos (Global Search)
+
+For the fastest access, use **Lumos** to search and launch by name:
+
+1.  Press **`Shift + Ctrl + Space`**.
+2.  Type the name of the app (e.g., "DOOM.elf").
+3.  Press **Enter** to launch.
+
+
+---
+[Return to Documentation Index](../README.md)

docs/usage/lumos.md

@@ -0,0 +1,29 @@
+# Lumos: System Search
+
+**Lumos** is the powerful, system-wide search and launch assistant for BoredOS. It allows you to find applications, documents, and system files instantly without navigating through folders.
+
+## Opening Lumos
+
+To activate Lumos at any time, use the global keyboard shortcut:
+
+**`Shift + Ctrl + Space`**
+
+The Lumos search modal will appear in the center of your screen, ready for input.
+
+## Features
+
+-   **Fuzzy Searching**: You don't need to type the exact name. Lumos uses fuzzy matching to find the most relevant results as you type.
+-   **Deep Indexing**: Lumos indexes files across the entire system.
+-   **Quick Launch**: Once you find what you're looking for, launching it is as simple as pressing `Enter`.
+
+## Navigation
+
+When the Lumos window is open:
+-   **Type**: Just start typing to filter results.
+-   **Arrow Keys (Up/Down)**: Move the selection highlight through the list of results.
+-   **Enter**: Launch the selected file or application.
+-   **Backspace**: Delete characters in your search query.
+-   **Escape**: Close Lumos and return to the desktop.
+
+---
+[Return to Documentation Index](../README.md)

docs/usage/terminal.md

@@ -0,0 +1,60 @@
+# Terminal & Command Line
+
+The BoredOS Terminal provides a powerful command-line interface (CLI) for advanced users and developers. It supports standard Unix-like features and provides direct access to the kernel's system calls.
+
+## The Shell
+
+The default shell in BoredOS is **BoredShell (Bsh)**, a userspace shell with a dedicated terminal app. It features:
+-   **ANSI Color Support**: Rich text output with colors and styles.
+-   **Command History**: Use the **Up** and **Down** arrow keys to navigate through your previous commands (up to 64 history entries).
+-   **Output Redirection**:
+    -   `command > file`: Write output to a new file (or overwrite existing).
+    -   `command >> file`: Append output to an existing file.
+-   **Piping**:
+    -   `command1 | command2`: Pass the output of the first command as input to the second.
+
+### Bsh Configuration
+
+Bsh loads its configuration from:
+
+`/Library/bsh/bshrc`
+
+This file is similar to `.zshrc` and can define:
+- `PATH` for command lookup
+- `STARTUP` for interactive shell startup scripts
+- `BOOT_SCRIPT` for a once-per-boot script
+- prompt templates (`PROMPT_LEFT`, `PROMPT_RIGHT`)
+
+Prompt tokens:
+- `%n` username
+- `%h` hostname
+- `%~` cwd ("~" for `/root`)
+- `%T` time (HH:MM)
+
+Example:
+
+```
+PATH=/bin:/root/Apps
+PROMPT_LEFT=%n@%h:%~$ 
+STARTUP=/Library/bsh/startup.bsh
+BOOT_SCRIPT=/Library/bsh/boot.bsh
+```
+
+## Common Commands
+
+Below are some of the most used commands available in `/bin`:
+
+| Command | Description |
+| :--- | :--- |
+| `ls` | List files and directories in the current path. |
+| `cd` | Change the current working directory. |
+| `cat` | Display the contents of a file. |
+| `ls` | List directory contents. |
+| `rm` | Remove a file. |
+| `mkdir` | Create a new directory. |
+| `man` | View the manual for a specific command (e.g., `man ls`). |
+| `sysfetch` | Display system and hardware information. |
+
+
+---
+[Return to Documentation Index](../README.md)

limine.conf

@@ -13,3 +13,4 @@ backdrop: 000000
 /BoredOS
     protocol: limine
     path: boot():/boredos.elf
+    cmdline: -v

src/arch/interrupts.asm

@@ -45,7 +45,11 @@ isr%2_wrapper:
     push r14
     push r15
     
-    ; Save SSE/FPU state (fxsave requires 16-byte alignment)
+    test qword [rsp + 144], 3
+    jz %%skip_swap
+    swapgs
+%%skip_swap:
+    
     sub rsp, 512
     fxsave [rsp]
 
@@ -76,6 +80,12 @@ isr%2_wrapper:
     pop rcx
     pop rbx
     pop rax
+
+    test qword [rsp + 24], 3
+    jz %%skip_swap_back
+    swapgs
+%%skip_swap_back:
+
     add rsp, 16 ; drop dummy vector and error code
     iretq
 %endmacro
@@ -163,8 +173,12 @@ exception_common:
     push r13
     push r14
     push r15
+
+    test qword [rsp + 144], 3
+    jz .skip_swap_exc
+    swapgs
+.skip_swap_exc:
     
-    ; Save SSE/FPU state (fxsave requires 16-byte alignment)
     sub rsp, 512
     fxsave [rsp]
 
@@ -196,6 +210,12 @@ exception_common:
     pop rcx
     pop rbx
     pop rax
+
+    test qword [rsp + 24], 3
+    jz .skip_swap_back_exc
+    swapgs
+.skip_swap_back_exc:
+
     add rsp, 16 ; drop vector and error code
     iretq
 

src/arch/syscalls.asm

@@ -15,15 +15,14 @@ section .text
 ; R9  = arg5
 
 syscall_entry:
-    ; 1. Switch to Kernel Stack safely
-    ; Note: For true SMP safety, we need per-CPU storage (via swapgs).
-    ; For now, we use a global scratch which is only safe because we mask interrupts on entry.
-    mov [rel user_rsp_scratch], rsp
-    mov rsp, [rel kernel_syscall_stack]
+    swapgs 
+    
+    mov [gs:40], rsp
+    mov rsp, [gs:48]
 
-    ; 2. Build iretq frame (compatible with registers_t)
+    ; 2. Build iretq frame 
     push 0x1B           ; SS (User Data)
-    push qword [rel user_rsp_scratch] ; RSP
+    push qword [gs:40]  ; RSP
     push r11            ; RFLAGS (captured by syscall)
     push 0x23           ; CS (User Code)
     push rcx            ; RIP (return address from syscall)
@@ -81,14 +80,7 @@ syscall_entry:
     pop rax
     add rsp, 16 ; drop int_no/err_code
     
-    ; Debug: check RIP before iretq
-    ; We can't easily print from here without destroying registers, 
-    ; but we can at least check if it's canonical.
-    
+    swapgs 
     iretq
 
 section .bss
-global kernel_syscall_stack
-global user_rsp_scratch
-kernel_syscall_stack: resq 1
-user_rsp_scratch: resq 1

src/core/kconsole.c

@@ -0,0 +1,95 @@
+#include "kconsole.h"
+#include "graphics.h"
+#include "sys/spinlock.h"
+#include <stddef.h>
+
+static spinlock_t console_lock = SPINLOCK_INIT;
+static int cursor_x = 0;
+static int cursor_y = 0;
+static bool kconsole_active = false;
+static uint32_t text_color = 0xFFFFFFFF; // White
+
+#define CHAR_WIDTH  8
+#define CHAR_HEIGHT 10
+
+void kconsole_init(void) {
+    cursor_x = 10;
+    cursor_y = 10;
+    kconsole_active = false;
+    
+    // Initial clear screen during boot
+    graphics_clear_back_buffer(0x00000000);
+    graphics_mark_screen_dirty();
+    graphics_flip_buffer();
+}
+
+void kconsole_set_active(bool active) {
+    kconsole_active = active;
+}
+
+void kconsole_set_color(uint32_t color) {
+    uint64_t flags = spinlock_acquire_irqsave(&console_lock);
+    text_color = color;
+    spinlock_release_irqrestore(&console_lock, flags);
+}
+
+static void kconsole_scroll(void) {
+    if (cursor_y + CHAR_HEIGHT >= get_screen_height() - 10) {
+        graphics_scroll_back_buffer(CHAR_HEIGHT);
+        cursor_y -= CHAR_HEIGHT;
+        graphics_mark_screen_dirty();
+        graphics_flip_buffer();
+    }
+}
+
+static void kconsole_putc_nolock(char c) {
+    if (!kconsole_active) return;
+
+    if (c == '\n') {
+        cursor_x = 10;
+        cursor_y += CHAR_HEIGHT;
+        kconsole_scroll();
+        graphics_flip_buffer();
+        return;
+    }
+
+    if (c == '\r') {
+        cursor_x = 10;
+        return;
+    }
+
+    if (c == '\t') {
+        cursor_x += CHAR_WIDTH * 4;
+        return;
+    }
+
+    // Draw character
+    draw_char_bitmap(cursor_x, cursor_y, c, text_color);
+    graphics_mark_screen_dirty();
+    
+    cursor_x += CHAR_WIDTH;
+    if (cursor_x + CHAR_WIDTH >= get_screen_width() - 10) {
+        cursor_x = 10;
+        cursor_y += CHAR_HEIGHT;
+        kconsole_scroll();
+    }
+}
+
+void kconsole_putc(char c) {
+    uint64_t flags = spinlock_acquire_irqsave(&console_lock);
+    kconsole_putc_nolock(c);
+    spinlock_release_irqrestore(&console_lock, flags);
+}
+
+void kconsole_write(const char *s) {
+    if (!s) return;
+    
+    uint64_t flags = spinlock_acquire_irqsave(&console_lock);
+    while (*s) {
+        kconsole_putc_nolock(*s++);
+    }
+    
+    // Flip buffer after a write batch during boot
+    graphics_flip_buffer();
+    spinlock_release_irqrestore(&console_lock, flags);
+}

src/core/kconsole.h

@@ -0,0 +1,13 @@
+#ifndef KCONSOLE_H
+#define KCONSOLE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+void kconsole_init(void);
+void kconsole_set_color(uint32_t color);
+void kconsole_putc(char c);
+void kconsole_write(const char *s);
+void kconsole_set_active(bool active);
+
+#endif // KCONSOLE_H

src/core/kutils.c

@@ -30,6 +30,16 @@ int k_strcmp(const char *s1, const char *s2) {
     return *(const unsigned char*)s1 - *(const unsigned char*)s2;
 }
 
+int k_strncmp(const char *s1, const char *s2, size_t n) {
+    while (n && *s1 && (*s1 == *s2)) {
+        s1++;
+        s2++;
+        n--;
+    }
+    if (n == 0) return 0;
+    return *(const unsigned char*)s1 - *(const unsigned char*)s2;
+}
+
 void k_strcpy(char *dest, const char *src) {
     while (*src) *dest++ = *src++;
     *dest = 0;
@@ -145,3 +155,17 @@ void k_beep_process(void) {
     }
 }
 
+char *k_strstr(const char *haystack, const char *needle) {
+    if (!*needle) return (char *)haystack;
+    for (; *haystack; haystack++) {
+        const char *h = haystack;
+        const char *n = needle;
+        while (*h && *n && *h == *n) {
+            h++;
+            n++;
+        }
+        if (!*n) return (char *)haystack;
+    }
+    return NULL;
+}
+

src/core/kutils.h

@@ -13,6 +13,7 @@ void k_memset(void *dest, int val, size_t len);
 void k_memcpy(void *dest, const void *src, size_t len);
 size_t k_strlen(const char *str);
 int k_strcmp(const char *s1, const char *s2);
+int k_strncmp(const char *s1, const char *s2, size_t n);
 void k_strcpy(char *dest, const char *src);
 int k_atoi(const char *str);
 void k_itoa(int n, char *buf);
@@ -25,5 +26,6 @@ void k_reboot(void);
 void k_shutdown(void);
 void k_beep(int freq, int ms);
 void k_beep_process(void);
+char *k_strstr(const char *haystack, const char *needle);
 
 #endif

src/core/main.c

@@ -17,12 +17,23 @@
 #include "io.h"
 #include "fat32.h"
 #include "tar.h"
+#include "vfs.h"
+#include "core/kconsole.h"
+#include "core/kutils.h"
 #include "memory_manager.h"
 #include "platform.h"
 #include "wallpaper.h"
 #include "smp.h"
 #include "work_queue.h"
 #include "lapic.h"
+#include "fs/sysfs.h"
+#include "fs/procfs.h"
+#include "fs/bootfs.h"
+#include "sys/kernel_subsystem.h"
+#include "sys/module_manager.h"
+#include "sys/bootfs_state.h"
+
+extern void sysfs_init_subsystems(void);
 
 // --- Limine Requests ---
 __attribute__((used, section(".requests")))
@@ -53,12 +64,26 @@ static volatile struct limine_smp_request smp_request = {
     .flags = 0
 };
 
+__attribute__((used, section(".requests")))
+static volatile struct limine_bootloader_info_request bootloader_info_request = {
+    .id = LIMINE_BOOTLOADER_INFO_REQUEST,
+    .revision = 0
+};
+
+__attribute__((used, section(".requests")))
+static volatile struct limine_kernel_file_request kernel_file_request = {
+    .id = LIMINE_KERNEL_FILE_REQUEST,
+    .revision = 0
+};
+
 __attribute__((used, section(".requests_start")))
 static volatile struct limine_request *const requests_start_marker[] = {
     (struct limine_request *)&framebuffer_request,
     (struct limine_request *)&memmap_request,
     (struct limine_request *)&module_request,
     (struct limine_request *)&smp_request,
+    (struct limine_request *)&bootloader_info_request,
+    (struct limine_request *)&kernel_file_request,
     NULL
 };
 
@@ -84,26 +109,70 @@ static void init_serial() {
     outb(0x3F8 + 4, 0x0B);
 }
 
+static spinlock_t serial_lock = SPINLOCK_INIT;
+
 void serial_write(const char *str) {
-    while (*str) {
+    uint64_t flags = spinlock_acquire_irqsave(&serial_lock);
+    const char *p = str;
+    while (*p) {
+        char c = *p++;
         while ((inb(0x3F8 + 5) & 0x20) == 0);
-        outb(0x3F8, *str++);
+        outb(0x3F8, c);
     }
+    kconsole_write(str);
+    spinlock_release_irqrestore(&serial_lock, flags);
+}
+
+static void serial_write_num_locked(uint32_t n) {
+    if (n >= 10) serial_write_num_locked(n / 10);
+    char c = '0' + (n % 10);
+    while ((inb(0x3F8 + 5) & 0x20) == 0);
+    outb(0x3F8, c);
+    kconsole_putc(c);
 }
 
 void serial_write_num(uint32_t n) {
-    if (n >= 10) serial_write_num(n / 10);
+    uint64_t flags = spinlock_acquire_irqsave(&serial_lock);
+    serial_write_num_locked(n);
+    spinlock_release_irqrestore(&serial_lock, flags);
+}
+
+static void serial_write_hex_locked(uint64_t n) {
+    char *hex = "0123456789ABCDEF";
+    if (n >= 16) serial_write_hex_locked(n / 16);
+    char c = hex[n % 16];
     while ((inb(0x3F8 + 5) & 0x20) == 0);
-    outb(0x3F8, '0' + (n % 10));
+    outb(0x3F8, c);
+    kconsole_putc(c);
 }
 
 void serial_write_hex(uint64_t n) {
-    char *hex = "0123456789ABCDEF";
-    if (n >= 16) serial_write_hex(n / 16);
-    while ((inb(0x3F8 + 5) & 0x20) == 0);
-    outb(0x3F8, hex[n % 16]);
+    uint64_t flags = spinlock_acquire_irqsave(&serial_lock);
+    serial_write_hex_locked(n);
+    spinlock_release_irqrestore(&serial_lock, flags);
 }
 
+void log_ok(const char *msg) {
+    serial_write("[  ");
+    kconsole_set_color(0xFF00FF00); 
+    serial_write("OK");
+    kconsole_set_color(0xFFFFFFFF); 
+    serial_write("  ] ");
+    serial_write(msg);
+    serial_write("\n");
+}
+
+void log_fail(const char *msg) {
+    serial_write("[ ");
+    kconsole_set_color(0xFFFF0000); 
+    serial_write("FAIL");
+    kconsole_set_color(0xFFFFFFFF); 
+    serial_write(" ] ");
+    serial_write(msg);
+    serial_write("\n");
+}
+
+
 // Kernel Entry Point
 
 static void fat32_mkdir_recursive(const char *path) {
@@ -133,62 +202,74 @@ static void fat32_mkdir_recursive(const char *path) {
 
 void kmain(void) {
     init_serial();
-    serial_write("\n[DEBUG] Entering kmain...\n");
+    vfs_init();
+    serial_write("\n");
 
     platform_init();
-    serial_write("[DEBUG] platform_init OK\n");
+    log_ok("Platform initialized");
     
     extern uint64_t hhdm_offset;
     extern uint64_t kernel_phys_base;
     extern uint64_t kernel_virt_base;
     
-    serial_write("[DEBUG] HHDM Offset: 0x");
+    serial_write("[INIT] HHDM Offset: 0x");
     serial_write_hex(hhdm_offset);
     serial_write("\n");
-    serial_write("[DEBUG] Kernel Phys: 0x");
+    serial_write("[INIT] Kernel Phys: 0x");
     serial_write_hex(kernel_phys_base);
     serial_write("\n");
-    serial_write("[DEBUG] Kernel Virt: 0x");
+    serial_write("[INIT] Kernel Virt: 0x");
     serial_write_hex(kernel_virt_base);
     serial_write("\n");
 
-    if (memmap_request.response != NULL) {
-        // The memory manager will now scan the memory map and manage all usable regions.
-        memory_manager_init_from_memmap(memmap_request.response);
-        serial_write("[DEBUG] memory_manager_init OK\n");
-    } else {
-        serial_write("[DEBUG] ERROR: No usable memory for heap! Check Limine memmap.\n");
-        hcf();
-    }
-
     if (framebuffer_request.response == NULL || framebuffer_request.response->framebuffer_count < 1) {
-        serial_write("[DEBUG] No framebuffer! Halting.\n");
+        serial_write("[INIT] No framebuffer! Halting.\n");
         hcf();
     }
 
     struct limine_framebuffer *fb = framebuffer_request.response->framebuffers[0];
     graphics_init(fb);
-    serial_write("[DEBUG] graphics_init OK\n");
+    kconsole_init();
+
+    // Check for verbose boot flag
+    if (kernel_file_request.response != NULL && kernel_file_request.response->kernel_file != NULL) {
+        const char *cmdline = kernel_file_request.response->kernel_file->cmdline;
+        if (cmdline != NULL && k_strstr(cmdline, "-v") != NULL) {
+            kconsole_set_active(true);
+        }
+    }
+
+    log_ok("Graphics and Console ready");
+
+    if (memmap_request.response != NULL) {
+        memory_manager_init_from_memmap(memmap_request.response);
+        log_ok("Memory manager ready");
+        smp_init_bsp();
+        log_ok("SMP BSP initialized");
+    } else {
+        log_fail("No usable memory for heap! Check Limine memmap.");
+        hcf();
+    }
 
     gdt_init();
-    serial_write("[DEBUG] gdt_init OK\n");
+    log_ok("GDT initialized");
 
     paging_init();
-    serial_write("[DEBUG] paging_init OK\n");
+    log_ok("Paging ready");
 
     syscall_init();
-    serial_write("[DEBUG] syscall_init OK\n");
+    log_ok("Syscalls ready");
 
     idt_init();
     idt_register_interrupts();
     idt_load();
-    serial_write("[DEBUG] idt_init OK\n");
+    log_ok("IDT ready");
 
     process_init();
 
     
     fat32_init();
-    serial_write("[DEBUG] fat32_init OK\n");
+    log_ok("FAT32 ready");
     fat32_mkdir("/bin");
     fat32_mkdir("/Library");
     fat32_mkdir("/Library/images");
@@ -196,14 +277,68 @@ void kmain(void) {
     fat32_mkdir("/Library/images/gif");
     fat32_mkdir("/Library/Fonts");
     fat32_mkdir("/Library/DOOM");
+    fat32_mkdir("/Library/bsh");
     fat32_mkdir("/docs");
 
+    sysfs_init_subsystems();
+    vfs_mount("/sys", "sysfs", "sysfs", sysfs_get_ops(), NULL);
+    vfs_mount("/proc", "procfs", "procfs", procfs_get_ops(), NULL);
+    
+    bootfs_init();
+    
+    if (bootloader_info_request.response != NULL) {
+        if (bootloader_info_request.response->name) {
+            k_strcpy(g_bootfs_state.bootloader_name, bootloader_info_request.response->name);
+        }
+        if (bootloader_info_request.response->version) {
+            k_strcpy(g_bootfs_state.bootloader_version, bootloader_info_request.response->version);
+        }
+    }
+    
+    if (kernel_file_request.response != NULL && kernel_file_request.response->kernel_file != NULL) {
+        g_bootfs_state.kernel_size = kernel_file_request.response->kernel_file->size;
+        serial_write("[INIT] Kernel size from bootloader: ");
+        serial_write_hex(g_bootfs_state.kernel_size);
+        serial_write(" bytes\n");
+    }
+    
+    extern uint32_t wm_get_ticks(void);
+    g_bootfs_state.boot_time_ms = wm_get_ticks();
+
+    if (module_request.response != NULL) {
+        g_bootfs_state.num_modules = module_request.response->module_count;
+        
+        serial_write("[INIT] Scanning modules for bootfs state...\n");
+        for (uint64_t i = 0; i < module_request.response->module_count; i++) {
+            struct limine_file *mod = module_request.response->modules[i];
+            const char *path = mod->path;
+            
+            if (fs_starts_with(path, "boot():")) path += 7;
+            else if (fs_starts_with(path, "boot:///")) path += 8;
+            
+            int path_len = 0;
+            while (path[path_len]) path_len++;
+            
+            serial_write("[INIT] Module: ");
+            serial_write(path);
+            serial_write(" (");
+            serial_write_hex(mod->size);
+            serial_write(" bytes)\n");
+            
+            if (path_len >= 5 && path[path_len-4] == '.' && path[path_len-3] == 't' && 
+                path[path_len-2] == 'a' && path[path_len-1] == 'r') {
+                g_bootfs_state.initrd_size = mod->size;
+                serial_write("[INIT] -> Initrd detected\n");
+            }
+        }
+    }
+    
+    vfs_mount("/boot", "bootfs", "bootfs", bootfs_get_ops(), NULL);
+
     if (module_request.response == NULL) {
-        serial_write("[DEBUG] ERROR: Limine Module Response is NULL!\n");
+        log_fail("Limine module response NULL");
     } else {
-        serial_write("[DEBUG] Limine Module Response found. Count: ");
-        serial_write_num(module_request.response->module_count);
-        serial_write("\n");
+        log_ok("Limine modules loaded");
         for (uint64_t i = 0; i < module_request.response->module_count; i++) {
             struct limine_file *mod = module_request.response->modules[i];
 
@@ -215,7 +350,7 @@ void kmain(void) {
             while(clean_path[len]) len++;
             
             if (len >= 4 && clean_path[len-4] == '.' && clean_path[len-3] == 't' && clean_path[len-2] == 'a' && clean_path[len-1] == 'r') {
-                serial_write("[DEBUG] Parsing TAR initrd: ");
+                serial_write("[INIT] Parsing TAR initrd: ");
                 serial_write(clean_path);
                 serial_write("\n");
                 tar_parse(mod->address, mod->size);
@@ -237,13 +372,13 @@ void kmain(void) {
                     fat32_close(fh);
                 }
             }
+            module_manager_register(clean_path, (uint64_t)mod->address, mod->size);
         }
     }
     
-    // Initialize fonts now that FAT32 and modules are loaded
     uint64_t current_rsp;
     asm volatile("mov %%rsp, %0" : "=r"(current_rsp));
-    serial_write("[DEBUG] Stack Alignment: 0x");
+    serial_write("[INIT] Stack Alignment: 0x");
     serial_write_hex(current_rsp);
     serial_write("\n");
 
@@ -253,24 +388,22 @@ void kmain(void) {
     ps2_init();
     asm("sti");
 
-    // Initialize LAPIC for IPI support
     lapic_init();
 
-    // Initialize SMP — bring up all CPU cores
     if (smp_request.response != NULL) {
         uint32_t online = smp_init(smp_request.response);
-        serial_write("[DEBUG] SMP init complete, CPUs online: ");
-        serial_write_num(online);
-        serial_write("\n");
+        log_ok("SMP initialized");
     } else {
-        serial_write("[DEBUG] No SMP response from bootloader\n");
-        // Still init as single-CPU
+        serial_write("[INIT] No SMP response from bootloader\n");
         smp_init(NULL);
     }
 
     wm_init();
 
     asm volatile("sti");
+    
+    extern void bootfs_refresh_from_disk(void);
+    bootfs_refresh_from_disk();
 
     while (1) {
         wm_process_input();

src/core/man_entries.h

@@ -14,8 +14,8 @@ static size_t man_strlen(const char *str) {
 }
 
 static void write_man_file(const char *name, const char *content) {
-    char path[128] = "A:/Library/man/";
-    int i = 15;
+    char path[128] = "/Library/man/";
+    int i = 13;
     while (*name) path[i++] = *name++;
     path[i++] = '.';
     path[i++] = 't';
@@ -31,8 +31,8 @@ static void write_man_file(const char *name, const char *content) {
 }
 
 void create_man_entries(void) {
-    fat32_mkdir("A:/Library");
-    fat32_mkdir("A:/Library/man");
+    fat32_mkdir("/Library");
+    fat32_mkdir("/Library/man");
 
     write_man_file("ping", "PING - Send ICMP echo requests\n\nUsage: ping <ip>\n\nSends ICMP echo requests to the specified IP address and displays the response times.");
     write_man_file("net", "NET - Network utilities\n\nUsage: net init\nnet info\nnet ipset >ip<\nnet udpsend >ip< >port< >message< net ping >ip< net help\n\nA collection of network-related commands.");
@@ -55,7 +55,8 @@ void create_man_entries(void) {
     write_man_file("touch", "TOUCH - Create empty file\n\nUsage: touch <filename>\n\nCreates a new empty file if it doesn't exist.");
     write_man_file("cc", "CC - C Compiler\n\nUsage: cc <file.c>\n\nThe BoredOS C Compiler. Compiles C source files into executables. (execute these with ./>file<)");
     write_man_file("crash", "CRASH - Trigger kernel exception\n\nUsage: crash\n\nIntentionally triggers a null pointer dereference to test handlers.");
-    write_man_file("sysfetch", "SYSFETCH - Show OS information\n\nUsage: sysfetch\n\nDisplays system information in a neofetch-like layout. Configurable via A:/Library/conf/sysfetch.cfg.");
+    write_man_file("sysfetch", "SYSFETCH - Show OS information\n\nUsage: sysfetch\n\nDisplays system information in a neofetch-like layout. Configurable via /Library/conf/sysfetch.cfg.");
+    write_man_file("uname", "UNAME - Print system information\n\nUsage: uname [-amnoprsv]\n\nOptions:\n  -a  Print all information\n  -s  Kernel name\n  -n  Node name\n  -r  Kernel release\n  -v  Kernel build date and time\n  -m  Machine hardware name\n  -p  Processor type\n  -o  Operating system name");
     write_man_file("meminfo", "MEMINFO - Memory usage stats\n\nUsage: meminfo\n\nDisplays current physical and virtual memory allocation statistics.");
     write_man_file("pci_list", "PCI_LIST - Scan PCI bus\n\nUsage: pci_list\n\nScans the PCI bus and lists all detected hardware devices.");
     write_man_file("reboot", "REBOOT - Restart system\n\nUsage: reboot\n\nRestarts the computer immediately.");
@@ -69,6 +70,7 @@ void create_man_entries(void) {
     write_man_file("math", "MATH - Expression evaluator\n\nUsage: math <expression>\n\nEvaluates simple arithmetic expressions from the command line.");
     write_man_file("viewer", "VIEWER - Image viewer\n\nUsage: viewer <file.ppm>\n\nA graphical application for viewing image files.");
     write_man_file("settings", "SETTINGS - System settings\n\nUsage: settings\n\nOpens the graphical system configuration tool.");
+    write_man_file("2048", "2048 - Classic game\n\nUsage: 2048\n\nPlays the classic 2048 game.");
 }
 
 #endif

src/core/platform.c

@@ -4,6 +4,8 @@
 #include <stdint.h>
 #include "limine.h"
 #include <stddef.h>
+#include "platform.h"
+#include "kutils.h"
 static volatile struct limine_hhdm_request hhdm_request __attribute__((used, section(".requests"))) = {
     .id = LIMINE_HHDM_REQUEST,
     .revision = 0,
@@ -69,3 +71,83 @@ void platform_get_cpu_model(char *model) {
     }
     model[48] = '\0';
 }
+void platform_get_cpu_vendor(char *vendor) {
+    uint32_t eax, ebx, ecx, edx;
+    asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(0));
+    
+    char *p = (char *)vendor;
+    *((uint32_t *)&p[0]) = ebx;
+    *((uint32_t *)&p[4]) = edx;
+    *((uint32_t *)&p[8]) = ecx;
+    p[12] = '\0';
+}
+
+void platform_get_cpu_info(cpu_info_t *info) {
+    uint32_t eax, ebx, ecx, edx;
+    
+    // CPUID leaf 1: basic feature information
+    asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(1));
+    
+    info->stepping = eax & 0xF;
+    info->model = (eax >> 4) & 0xF;
+    info->family = (eax >> 8) & 0xF;
+    info->microcode = (ebx >> 8) & 0xFF;
+    info->flags = ((uint64_t)ecx << 32) | edx;  // ECX and EDX contain feature flags
+    info->cache_size = (ebx >> 16) & 0xFF;      // Cache line size in bytes
+}
+
+void platform_get_cpu_flags(char *flags_str) {
+    uint32_t eax, ebx, ecx, edx;
+    
+    flags_str[0] = '\0';
+    
+    // CPUID leaf 1
+    asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(1));
+    
+    // ECX flags
+    if (ecx & (1 << 0)) k_strcpy(flags_str + k_strlen(flags_str), "sse3 ");
+    if (ecx & (1 << 1)) k_strcpy(flags_str + k_strlen(flags_str), "pclmulqdq ");
+    if (ecx & (1 << 3)) k_strcpy(flags_str + k_strlen(flags_str), "monitor ");
+    if (ecx & (1 << 6)) k_strcpy(flags_str + k_strlen(flags_str), "ssse3 ");
+    if (ecx & (1 << 9)) k_strcpy(flags_str + k_strlen(flags_str), "sdbg ");
+    if (ecx & (1 << 12)) k_strcpy(flags_str + k_strlen(flags_str), "fma ");
+    if (ecx & (1 << 13)) k_strcpy(flags_str + k_strlen(flags_str), "cx16 ");
+    if (ecx & (1 << 19)) k_strcpy(flags_str + k_strlen(flags_str), "sse4_1 ");
+    if (ecx & (1 << 20)) k_strcpy(flags_str + k_strlen(flags_str), "sse4_2 ");
+    if (ecx & (1 << 23)) k_strcpy(flags_str + k_strlen(flags_str), "popcnt ");
+    if (ecx & (1 << 25)) k_strcpy(flags_str + k_strlen(flags_str), "aes ");
+    if (ecx & (1 << 26)) k_strcpy(flags_str + k_strlen(flags_str), "xsave ");
+    if (ecx & (1 << 28)) k_strcpy(flags_str + k_strlen(flags_str), "avx ");
+    
+    // EDX flags
+    if (edx & (1 << 0)) k_strcpy(flags_str + k_strlen(flags_str), "fpu ");
+    if (edx & (1 << 3)) k_strcpy(flags_str + k_strlen(flags_str), "pse ");
+    if (edx & (1 << 4)) k_strcpy(flags_str + k_strlen(flags_str), "tsc ");
+    if (edx & (1 << 6)) k_strcpy(flags_str + k_strlen(flags_str), "pae ");
+    if (edx & (1 << 8)) k_strcpy(flags_str + k_strlen(flags_str), "cx8 ");
+    if (edx & (1 << 9)) k_strcpy(flags_str + k_strlen(flags_str), "apic ");
+    if (edx & (1 << 11)) k_strcpy(flags_str + k_strlen(flags_str), "sep ");
+    if (edx & (1 << 15)) k_strcpy(flags_str + k_strlen(flags_str), "cmov ");
+    if (edx & (1 << 23)) k_strcpy(flags_str + k_strlen(flags_str), "mmx ");
+    if (edx & (1 << 24)) k_strcpy(flags_str + k_strlen(flags_str), "fxsr ");
+    if (edx & (1 << 25)) k_strcpy(flags_str + k_strlen(flags_str), "sse ");
+    if (edx & (1 << 26)) k_strcpy(flags_str + k_strlen(flags_str), "sse2 ");
+    
+    // Extended leaf 0x80000001 for advanced flags
+    asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(0x80000001));
+    
+    if (edx & (1 << 11)) k_strcpy(flags_str + k_strlen(flags_str), "syscall ");
+    if (edx & (1 << 20)) k_strcpy(flags_str + k_strlen(flags_str), "nx ");
+    if (edx & (1 << 26)) k_strcpy(flags_str + k_strlen(flags_str), "pdpe1gb ");
+    if (edx & (1 << 27)) k_strcpy(flags_str + k_strlen(flags_str), "rdtscp ");
+    if (edx & (1 << 29)) k_strcpy(flags_str + k_strlen(flags_str), "lm ");
+    
+    if (ecx & (1 << 0)) k_strcpy(flags_str + k_strlen(flags_str), "lahf_lm ");
+    if (ecx & (1 << 5)) k_strcpy(flags_str + k_strlen(flags_str), "abm ");
+    
+    // Remove trailing space
+    int len = k_strlen(flags_str);
+    if (len > 0 && flags_str[len-1] == ' ') {
+        flags_str[len-1] = '\0';
+    }
+}

src/core/platform.h

@@ -6,9 +6,21 @@
 
 #include <stdint.h>
 
+typedef struct {
+    uint32_t family;
+    uint32_t model;
+    uint32_t stepping;
+    uint32_t microcode;
+    uint64_t flags;
+    uint32_t cache_size;
+} cpu_info_t;
+
 void platform_init(void);
 uint64_t p2v(uint64_t phys);
 uint64_t v2p(uint64_t virt);
 void platform_get_cpu_model(char *model);
+void platform_get_cpu_vendor(char *vendor);
+void platform_get_cpu_info(cpu_info_t *info);
+void platform_get_cpu_flags(char *flags_str);
 
 #endif

src/core/version.c

@@ -13,10 +13,10 @@ void get_os_info(os_info_t *info) {
     for (size_t i = 0; i < sizeof(os_info_t); i++) p[i] = 0;
 
     const char *os_name = "BoredOS";
-    const char *os_version = "26.4";
-    const char *os_codename = "Geometry";
+    const char *os_version = "26.4.2";
+    const char *os_codename = "Voyager";
     const char *kernel_name = "Boredkernel";
-    const char *kernel_version = "3.2.3";
+    const char *kernel_version = "4.1.0-stable";
     const char *build_date = __DATE__;
     const char *build_time = __TIME__;
     const char *build_arch = "x86_64";

src/dev/ahci.c

@@ -0,0 +1,516 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include "ahci.h"
+#include "pci.h"
+#include "disk.h"
+#include "memory_manager.h"
+#include "paging.h"
+#include "io.h"
+#include <stddef.h>
+#include "../sys/spinlock.h"
+
+extern void serial_write(const char *str);
+extern void serial_write_num(uint64_t num);
+extern void serial_write_hex(uint32_t val);
+
+// ============================================================================
+// AHCI Driver State
+// ============================================================================
+
+static HBA_MEM *abar = NULL;               // MMIO-mapped AHCI Base Address
+static bool ahci_initialized = false;
+static int active_port_count = 0;
+
+#define MAX_AHCI_PORTS 32
+
+typedef struct {
+    bool active;
+    int port_num;
+    HBA_PORT *port;
+    HBA_CMD_HEADER *cmd_list;   // 1KB, 1KB aligned
+    void *fis_base;             // 256B, 256B aligned
+    HBA_CMD_TBL *cmd_tbl;      // Command table for slot 0
+    spinlock_t lock;           // Port-level lock for thread-safety
+} ahci_port_state_t;
+
+static ahci_port_state_t ports[MAX_AHCI_PORTS];
+
+// ============================================================================
+// String Helpers
+// ============================================================================
+
+static void ahci_strcpy(char *d, const char *s) {
+    while ((*d++ = *s++));
+}
+
+// Kernel virtual to physical address conversion
+extern uint64_t v2p(uint64_t vaddr);
+
+// ============================================================================
+// Port Setup
+// ============================================================================
+
+static void ahci_stop_cmd(HBA_PORT *port) {
+    // Clear ST (Start)
+    port->cmd &= ~HBA_PORT_CMD_ST;
+
+    // Clear FRE (FIS Receive Enable)
+    port->cmd &= ~HBA_PORT_CMD_FRE;
+
+    // Wait until FR and CR clear
+    int timeout = 500000;
+    while (timeout-- > 0) {
+        if (port->cmd & HBA_PORT_CMD_FR) continue;
+        if (port->cmd & HBA_PORT_CMD_CR) continue;
+        break;
+    }
+}
+
+static void ahci_start_cmd(HBA_PORT *port) {
+    // Wait until CR clears
+    while (port->cmd & HBA_PORT_CMD_CR);
+
+    // Set FRE and ST
+    port->cmd |= HBA_PORT_CMD_FRE;
+    port->cmd |= HBA_PORT_CMD_ST;
+}
+
+static int ahci_check_port_type(HBA_PORT *port) {
+    uint32_t ssts = port->ssts;
+    uint8_t ipm = (ssts >> 8) & 0x0F;
+    uint8_t det = ssts & 0x0F;
+
+    if (det != 3) return -1;   // No device detected
+    if (ipm != 1) return -1;   // Not in active state
+
+    switch (port->sig) {
+        case SATA_SIG_ATA:   return 0;   // SATA drive
+        case SATA_SIG_ATAPI: return 1;   // SATAPI drive
+        case SATA_SIG_SEMB:  return 2;   // SEMB
+        case SATA_SIG_PM:    return 3;   // Port multiplier
+        default:             return -1;
+    }
+}
+
+static void ahci_port_rebase(ahci_port_state_t *ps) {
+    HBA_PORT *port = ps->port;
+
+    ahci_stop_cmd(port);
+
+    // Allocate command list (1KB, 1024-byte aligned)
+    ps->cmd_list = (HBA_CMD_HEADER*)kmalloc_aligned(1024, 1024);
+    if (!ps->cmd_list) return;
+    mem_memset(ps->cmd_list, 0, 1024);
+
+    uint64_t clb_phys = v2p((uint64_t)ps->cmd_list);
+    port->clb = (uint32_t)(clb_phys & 0xFFFFFFFF);
+    port->clbu = (uint32_t)(clb_phys >> 32);
+
+    // Allocate FIS receive area (256 bytes, 256-byte aligned)
+    ps->fis_base = kmalloc_aligned(256, 256);
+    if (!ps->fis_base) return;
+    mem_memset(ps->fis_base, 0, 256);
+
+    uint64_t fb_phys = v2p((uint64_t)ps->fis_base);
+    port->fb = (uint32_t)(fb_phys & 0xFFFFFFFF);
+    port->fbu = (uint32_t)(fb_phys >> 32);
+
+    // Allocate command table for slot 0 (256-byte aligned, room for 8 PRDT entries)
+    int cmd_tbl_size = sizeof(HBA_CMD_TBL) + 8 * sizeof(HBA_PRDT_ENTRY);
+    ps->cmd_tbl = (HBA_CMD_TBL*)kmalloc_aligned(cmd_tbl_size, 256);
+    if (!ps->cmd_tbl) return;
+    mem_memset(ps->cmd_tbl, 0, cmd_tbl_size);
+
+    // Set command header 0 to point to our command table
+    uint64_t ctba_phys = v2p((uint64_t)ps->cmd_tbl);
+    ps->cmd_list[0].ctba = (uint32_t)(ctba_phys & 0xFFFFFFFF);
+    ps->cmd_list[0].ctbau = (uint32_t)(ctba_phys >> 32);
+    ps->cmd_list[0].prdtl = 1;  // 1 PRDT entry default
+
+    // Clear error and interrupt status
+    port->serr = 0xFFFFFFFF;
+    port->is = 0xFFFFFFFF;
+
+    ahci_start_cmd(port);
+}
+
+// ============================================================================
+// Sector I/O
+// ============================================================================
+
+static int ahci_find_free_slot(HBA_PORT *port) {
+    uint32_t slots = (port->sact | port->ci);
+    for (int i = 0; i < 32; i++) {
+        if (!(slots & (1 << i))) return i;
+    }
+    return -1;
+}
+
+int ahci_read_sectors(int port_num, uint64_t lba, uint32_t count, uint8_t *buffer) {
+    if (!ahci_initialized || port_num < 0 || port_num >= MAX_AHCI_PORTS) return -1;
+    ahci_port_state_t *ps = &ports[port_num];
+    if (!ps->active) return -1;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&ps->lock);
+    HBA_PORT *port = ps->port;
+
+    // Clear any pending interrupts/errors
+    port->is = 0xFFFFFFFF;
+
+    int slot = ahci_find_free_slot(port);
+    if (slot < 0) return -1;
+
+    HBA_CMD_HEADER *cmd_hdr = &ps->cmd_list[slot];
+    cmd_hdr->cfl = sizeof(FIS_REG_H2D) / sizeof(uint32_t);
+    cmd_hdr->w = 0;   // Read
+    cmd_hdr->prdtl = 1;
+
+    HBA_CMD_TBL *cmd_tbl = ps->cmd_tbl;
+    mem_memset(cmd_tbl, 0, sizeof(HBA_CMD_TBL) + sizeof(HBA_PRDT_ENTRY));
+
+    // Setup PRDT
+    uint64_t buf_phys = v2p((uint64_t)buffer);
+    cmd_tbl->prdt[0].dba = (uint32_t)(buf_phys & 0xFFFFFFFF);
+    cmd_tbl->prdt[0].dbau = (uint32_t)(buf_phys >> 32);
+    cmd_tbl->prdt[0].dbc = (count * 512) - 1;   // 0-based byte count
+    cmd_tbl->prdt[0].i = 1;
+
+    // Setup Command FIS
+    FIS_REG_H2D *fis = (FIS_REG_H2D*)&cmd_tbl->cfis;
+    fis->fis_type = FIS_TYPE_REG_H2D;
+    fis->c = 1;  // Command
+    fis->command = ATA_CMD_READ_DMA_EX;
+
+    fis->lba0 = (uint8_t)(lba);
+    fis->lba1 = (uint8_t)(lba >> 8);
+    fis->lba2 = (uint8_t)(lba >> 16);
+    fis->device = 1 << 6;  // LBA mode
+    fis->lba3 = (uint8_t)(lba >> 24);
+    fis->lba4 = (uint8_t)(lba >> 32);
+    fis->lba5 = (uint8_t)(lba >> 40);
+
+    fis->countl = (uint8_t)(count);
+    fis->counth = (uint8_t)(count >> 8);
+
+    // Issue command
+    port->ci = (1 << slot);
+
+    // Wait for completion
+    int timeout = 1000000;
+    while (timeout-- > 0) {
+        if (!(port->ci & (1 << slot))) break;
+        if (port->is & (1 << 30)) {  // Task File Error
+            serial_write("\n");
+            spinlock_release_irqrestore(&ps->lock, rflags);
+            return -1;
+        }
+    }
+
+    if (timeout <= 0) {
+        serial_write("[AHCI] Read timeout on port ");
+        serial_write_num(port_num);
+        serial_write("\n");
+        spinlock_release_irqrestore(&ps->lock, rflags);
+        return -1;
+    }
+
+    spinlock_release_irqrestore(&ps->lock, rflags);
+    return 0;
+}
+
+int ahci_write_sectors(int port_num, uint64_t lba, uint32_t count, const uint8_t *buffer) {
+    if (!ahci_initialized || port_num < 0 || port_num >= MAX_AHCI_PORTS) return -1;
+    ahci_port_state_t *ps = &ports[port_num];
+    if (!ps->active) return -1;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&ps->lock);
+    HBA_PORT *port = ps->port;
+
+    port->is = 0xFFFFFFFF;
+
+    int slot = ahci_find_free_slot(port);
+    if (slot < 0) return -1;
+
+    HBA_CMD_HEADER *cmd_hdr = &ps->cmd_list[slot];
+    cmd_hdr->cfl = sizeof(FIS_REG_H2D) / sizeof(uint32_t);
+    cmd_hdr->w = 1;   // Write
+    cmd_hdr->prdtl = 1;
+
+    HBA_CMD_TBL *cmd_tbl = ps->cmd_tbl;
+    mem_memset(cmd_tbl, 0, sizeof(HBA_CMD_TBL) + sizeof(HBA_PRDT_ENTRY));
+
+    uint64_t buf_phys = v2p((uint64_t)buffer);
+    cmd_tbl->prdt[0].dba = (uint32_t)(buf_phys & 0xFFFFFFFF);
+    cmd_tbl->prdt[0].dbau = (uint32_t)(buf_phys >> 32);
+    cmd_tbl->prdt[0].dbc = (count * 512) - 1;
+    cmd_tbl->prdt[0].i = 1;
+
+    FIS_REG_H2D *fis = (FIS_REG_H2D*)&cmd_tbl->cfis;
+    fis->fis_type = FIS_TYPE_REG_H2D;
+    fis->c = 1;
+    fis->command = ATA_CMD_WRITE_DMA_EX;
+
+    fis->lba0 = (uint8_t)(lba);
+    fis->lba1 = (uint8_t)(lba >> 8);
+    fis->lba2 = (uint8_t)(lba >> 16);
+    fis->device = 1 << 6;
+    fis->lba3 = (uint8_t)(lba >> 24);
+    fis->lba4 = (uint8_t)(lba >> 32);
+    fis->lba5 = (uint8_t)(lba >> 40);
+
+    fis->countl = (uint8_t)(count);
+    fis->counth = (uint8_t)(count >> 8);
+
+    port->ci = (1 << slot);
+
+    int timeout = 1000000;
+    while (timeout-- > 0) {
+        if (!(port->ci & (1 << slot))) break;
+        if (port->is & (1 << 30)) {
+            serial_write("[AHCI] Write error on port ");
+            serial_write_num(port_num);
+            serial_write("\n");
+            spinlock_release_irqrestore(&ps->lock, rflags);
+            return -1;
+        }
+    }
+
+    if (timeout <= 0) {
+        serial_write("[AHCI] Write timeout on port ");
+        serial_write_num(port_num);
+        serial_write("\n");
+        spinlock_release_irqrestore(&ps->lock, rflags);
+        return -1;
+    }
+
+    spinlock_release_irqrestore(&ps->lock, rflags);
+    return 0;
+}
+
+// ============================================================================
+// AHCI Disk Integration — wrap AHCI into Disk read/write_sector
+// ============================================================================
+
+typedef struct {
+    int ahci_port;
+} AHCIDriverData;
+
+static int ahci_disk_read_sector(Disk *disk, uint32_t sector, uint8_t *buffer) {
+    AHCIDriverData *data = (AHCIDriverData*)disk->driver_data;
+
+    // For partitions, add offset and use parent's port
+    if (disk->is_partition && disk->parent) {
+        AHCIDriverData *pdata = (AHCIDriverData*)disk->parent->driver_data;
+        return ahci_read_sectors(pdata->ahci_port,
+                                 (uint64_t)sector + disk->partition_lba_offset, 1, buffer);
+    }
+
+    return ahci_read_sectors(data->ahci_port, (uint64_t)sector, 1, buffer);
+}
+
+static int ahci_disk_write_sector(Disk *disk, uint32_t sector, const uint8_t *buffer) {
+    AHCIDriverData *data = (AHCIDriverData*)disk->driver_data;
+
+    if (disk->is_partition && disk->parent) {
+        AHCIDriverData *pdata = (AHCIDriverData*)disk->parent->driver_data;
+        return ahci_write_sectors(pdata->ahci_port,
+                                  (uint64_t)sector + disk->partition_lba_offset, 1, buffer);
+    }
+
+    return ahci_write_sectors(data->ahci_port, (uint64_t)sector, 1, buffer);
+}
+
+// ============================================================================
+// Initialization
+// ============================================================================
+
+int ahci_get_port_count(void) {
+    return active_port_count;
+}
+
+bool ahci_port_is_active(int port_num) {
+    if (port_num < 0 || port_num >= MAX_AHCI_PORTS) return false;
+    return ports[port_num].active;
+}
+
+void ahci_init(void) {
+    serial_write("[AHCI] Scanning PCI for AHCI controller...\n");
+
+    // Find AHCI controller (Class 0x01, Subclass 0x06)
+    pci_device_t pci_dev;
+    if (!pci_find_device_by_class(PCI_CLASS_MASS_STORAGE, PCI_SUBCLASS_SATA, &pci_dev)) {
+        serial_write("[AHCI] No AHCI controller found\n");
+        return;
+    }
+
+    serial_write("[AHCI] Found AHCI controller (");
+    serial_write("vendor=0x");
+    serial_write_hex(pci_dev.vendor_id);
+    serial_write(", device=0x");
+    serial_write_hex(pci_dev.device_id);
+    serial_write(")\n");
+
+    // Enable Bus Mastering and MMIO
+    pci_enable_bus_mastering(&pci_dev);
+    pci_enable_mmio(&pci_dev);
+
+    // Read ABAR (BAR5)
+    uint32_t abar_raw = pci_get_bar(&pci_dev, 5);
+    uint64_t abar_phys = abar_raw & 0xFFFFF000;  // Mask out lower bits
+
+    if (abar_phys == 0) {
+        serial_write("[AHCI] Invalid ABAR address\n");
+        return;
+    }
+
+    serial_write("[AHCI] ABAR physical address: 0x");
+    serial_write_hex((uint32_t)abar_phys);
+    serial_write("\n");
+
+    // Map ABAR region into kernel virtual address space
+    // Identity-map several pages to cover the HBA memory (at least 0x1100 bytes)
+    uint64_t abar_virt = abar_phys; // Use identity mapping
+    for (uint64_t offset = 0; offset < 0x2000; offset += 4096) {
+        paging_map_page(paging_get_pml4_phys(), abar_virt + offset,
+                        abar_phys + offset,
+                        PT_PRESENT | PT_RW | PT_CACHE_DISABLE);
+    }
+
+    abar = (HBA_MEM*)abar_virt;
+
+    // Enable AHCI mode
+    abar->ghc |= (1 << 31);  // AE (AHCI Enable)
+
+    serial_write("[AHCI] Version: ");
+    serial_write_num(abar->vs >> 16);
+    serial_write(".");
+    serial_write_num(abar->vs & 0xFFFF);
+    serial_write("\n");
+
+    // Probe ports
+    uint32_t pi = abar->pi;
+    active_port_count = 0;
+
+    for (int i = 0; i < 32; i++) {
+        ports[i].active = false;
+
+        HBA_PORT *port = &abar->ports[i];
+        ports[i].lock = SPINLOCK_INIT;
+        int type = ahci_check_port_type(port);
+
+        if (type == 0) { // SATA drive
+            serial_write("[AHCI] Port ");
+            serial_write_num(i);
+            serial_write(": SATA drive detected\n");
+
+            ports[i].port_num = i;
+            ports[i].port = port;
+            ahci_port_rebase(&ports[i]);
+            ports[i].active = true;
+            active_port_count++;
+
+            // Register as a block device
+            Disk *disk = (Disk*)kmalloc(sizeof(Disk));
+            if (disk) {
+                AHCIDriverData *drv = (AHCIDriverData*)kmalloc(sizeof(AHCIDriverData));
+                drv->ahci_port = i;
+
+                disk->devname[0] = 0; // Auto-assign
+                disk->type = DISK_TYPE_SATA;
+                ahci_strcpy(disk->label, "SATA Drive");
+                disk->read_sector = ahci_disk_read_sector;
+                disk->write_sector = ahci_disk_write_sector;
+                disk->driver_data = drv;
+                disk->partition_lba_offset = 0;
+                disk->total_sectors = 0;
+                disk->parent = NULL;
+                disk->is_partition = false;
+                disk->is_fat32 = false;
+
+                disk_register(disk);
+
+                // Let disk_manager parse partitions — we call a scan function
+                extern void disk_manager_scan_partitions(Disk *disk);
+                // Inline MBR parse for this disk
+                extern void serial_write(const char *str);
+                serial_write("[AHCI] Probing partitions on /dev/");
+                serial_write(disk->devname);
+                serial_write("...\n");
+
+                // Read MBR sector 0
+                uint8_t *mbr_buf = (uint8_t*)kmalloc(512);
+                if (mbr_buf) {
+                    if (ahci_disk_read_sector(disk, 0, mbr_buf) == 0) {
+                        if (mbr_buf[510] == 0x55 && mbr_buf[511] == 0xAA) {
+                            // Parse MBR partition table
+                            typedef struct {
+                                uint8_t  status;
+                                uint8_t  chs_first[3];
+                                uint8_t  type;
+                                uint8_t  chs_last[3];
+                                uint32_t lba_start;
+                                uint32_t sector_count;
+                            } __attribute__((packed)) MBR_Part;
+
+                            MBR_Part *parts = (MBR_Part*)&mbr_buf[446];
+                            int pn = 1;
+                            for (int p = 0; p < 4; p++) {
+                                if (parts[p].type == 0x00 || parts[p].sector_count == 0)
+                                    continue;
+
+                                bool fat32 = false;
+                                if (parts[p].type == 0x0B || parts[p].type == 0x0C) {
+                                    // Verify BPB
+                                    uint8_t *pbuf = (uint8_t*)kmalloc(512);
+                                    if (pbuf) {
+                                        if (ahci_disk_read_sector(disk, parts[p].lba_start, pbuf) == 0) {
+                                            if (pbuf[510] == 0x55 && pbuf[511] == 0xAA) {
+                                                uint16_t bps = *(uint16_t*)&pbuf[11];
+                                                uint16_t spf16 = *(uint16_t*)&pbuf[22];
+                                                uint32_t spf32 = *(uint32_t*)&pbuf[36];
+                                                if (bps == 512 && spf16 == 0 && spf32 > 0)
+                                                    fat32 = true;
+                                            }
+                                        }
+                                        kfree(pbuf);
+                                    }
+                                }
+
+                                disk_register_partition(disk, parts[p].lba_start,
+                                                        parts[p].sector_count, fat32, pn);
+                                pn++;
+                            }
+
+                            // Fallback: raw FAT32
+                            if (pn == 1) {
+                                uint16_t bps = *(uint16_t*)&mbr_buf[11];
+                                uint16_t spf16 = *(uint16_t*)&mbr_buf[22];
+                                uint32_t spf32 = *(uint32_t*)&mbr_buf[36];
+                                if (bps == 512 && spf16 == 0 && spf32 > 0) {
+                                    disk->is_fat32 = true;
+                                    disk->partition_lba_offset = 0;
+                                    serial_write("[AHCI] Raw FAT32 volume detected\n");
+                                }
+                            }
+                        }
+                    }
+                    kfree(mbr_buf);
+                }
+            }
+        } else if (type == 1) {
+            serial_write("[AHCI] Port ");
+            serial_write_num(i);
+            serial_write(": SATAPI drive (ignored)\n");
+        }
+    }
+
+    if (active_port_count > 0) {
+        ahci_initialized = true;
+        serial_write("[AHCI] Initialization complete: ");
+        serial_write_num(active_port_count);
+        serial_write(" SATA port(s) active\n");
+    } else {
+        serial_write("[AHCI] No active SATA ports found\n");
+    }
+}

src/dev/ahci.h

@@ -0,0 +1,174 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#ifndef AHCI_H
+#define AHCI_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+// ============================================================================
+// FIS (Frame Information Structure) Types
+// ============================================================================
+
+typedef enum {
+    FIS_TYPE_REG_H2D   = 0x27,    // Register FIS — Host to Device
+    FIS_TYPE_REG_D2H   = 0x34,    // Register FIS — Device to Host
+    FIS_TYPE_DMA_ACT   = 0x39,    // DMA Activate FIS
+    FIS_TYPE_DMA_SETUP = 0x41,    // DMA Setup FIS
+    FIS_TYPE_DATA      = 0x46,    // Data FIS
+    FIS_TYPE_BIST      = 0x58,    // BIST Activate FIS
+    FIS_TYPE_PIO_SETUP = 0x5F,    // PIO Setup FIS
+    FIS_TYPE_DEV_BITS  = 0xA1,    // Set Device Bits FIS
+} FIS_TYPE;
+
+// ============================================================================
+// HBA Register Structures (MMIO-mapped from ABAR)
+// ============================================================================
+
+// Port Registers (one set per port, at ABAR + 0x100 + portno*0x80)
+typedef volatile struct {
+    uint32_t clb;       // 0x00: Command List Base Address (lower 32 bits)
+    uint32_t clbu;      // 0x04: Command List Base Address (upper 32 bits)
+    uint32_t fb;        // 0x08: FIS Base Address (lower 32 bits)
+    uint32_t fbu;       // 0x0C: FIS Base Address (upper 32 bits)
+    uint32_t is;        // 0x10: Interrupt Status
+    uint32_t ie;        // 0x14: Interrupt Enable
+    uint32_t cmd;       // 0x18: Command and Status
+    uint32_t rsv0;      // 0x1C: Reserved
+    uint32_t tfd;       // 0x20: Task File Data
+    uint32_t sig;       // 0x24: Signature
+    uint32_t ssts;      // 0x28: SATA Status (SStatus)
+    uint32_t sctl;      // 0x2C: SATA Control (SControl)
+    uint32_t serr;      // 0x30: SATA Error (SError)
+    uint32_t sact;      // 0x34: SATA Active (SCR3)
+    uint32_t ci;        // 0x38: Command Issue
+    uint32_t sntf;      // 0x3C: SATA Notification (SCR4)
+    uint32_t fbs;       // 0x40: FIS-based Switch Control
+    uint32_t rsv1[11];  // 0x44~0x6F
+    uint32_t vendor[4]; // 0x70~0x7F
+} HBA_PORT;
+
+// Global HBA Memory Registers (at ABAR)
+typedef volatile struct {
+    uint32_t cap;       // 0x00: Host Capability
+    uint32_t ghc;       // 0x04: Global Host Control
+    uint32_t is;        // 0x08: Interrupt Status
+    uint32_t pi;        // 0x0C: Port Implemented
+    uint32_t vs;        // 0x10: Version
+    uint32_t ccc_ctl;   // 0x14: Command Completion Coalescing Control
+    uint32_t ccc_pts;   // 0x18: Command Completion Coalescing Ports
+    uint32_t em_loc;    // 0x1C: Enclosure Management Location
+    uint32_t em_ctl;    // 0x20: Enclosure Management Control
+    uint32_t cap2;      // 0x24: Host Capabilities Extended
+    uint32_t bohc;      // 0x28: BIOS/OS Handoff Control and Status
+    uint8_t  rsv[0xA0 - 0x2C];
+    uint8_t  vendor[0x100 - 0xA0];
+    HBA_PORT ports[];   // Port 0 at offset 0x100 (flexible array member)
+} HBA_MEM;
+
+// ============================================================================
+// Command List / Table Structures (DMA)
+// ============================================================================
+
+// Command Header (32 bytes each, 32 entries per port = 1KB)
+typedef struct {
+    uint8_t  cfl:5;     // Command FIS Length (in DWORDs)
+    uint8_t  a:1;       // ATAPI
+    uint8_t  w:1;       // Write (1=H2D, 0=D2H)
+    uint8_t  p:1;       // Prefetchable
+
+    uint8_t  r:1;       // Reset
+    uint8_t  b:1;       // BIST
+    uint8_t  c:1;       // Clear Busy upon R_OK
+    uint8_t  rsv0:1;
+    uint8_t  pmp:4;     // Port Multiplier Port
+
+    uint16_t prdtl;     // Physical Region Descriptor Table Length (entries)
+
+    volatile uint32_t prdbc;  // PRD Byte Count transferred
+
+    uint32_t ctba;      // Command Table Descriptor Base Address (lower 32)
+    uint32_t ctbau;     // Command Table Descriptor Base Address (upper 32)
+
+    uint32_t rsv1[4];   // Reserved
+} __attribute__((packed)) HBA_CMD_HEADER;
+
+// Physical Region Descriptor Table Entry
+typedef struct {
+    uint32_t dba;       // Data Base Address (lower 32)
+    uint32_t dbau;      // Data Base Address (upper 32)
+    uint32_t rsv0;      // Reserved
+    uint32_t dbc:22;    // Byte Count (0-based, max 4MB)
+    uint32_t rsv1:9;    // Reserved
+    uint32_t i:1;       // Interrupt on Completion
+} __attribute__((packed)) HBA_PRDT_ENTRY;
+
+// Host-to-Device Register FIS
+typedef struct {
+    uint8_t  fis_type;  // FIS_TYPE_REG_H2D
+    uint8_t  pmport:4;  // Port Multiplier
+    uint8_t  rsv0:3;    // Reserved
+    uint8_t  c:1;       // 1=Command, 0=Control
+    uint8_t  command;   // Command register
+    uint8_t  featurel;  // Feature register (7:0)
+    uint8_t  lba0;      // LBA (7:0)
+    uint8_t  lba1;      // LBA (15:8)
+    uint8_t  lba2;      // LBA (23:16)
+    uint8_t  device;    // Device register
+    uint8_t  lba3;      // LBA (31:24)
+    uint8_t  lba4;      // LBA (39:32)
+    uint8_t  lba5;      // LBA (47:40)
+    uint8_t  featureh;  // Feature register (15:8)
+    uint8_t  countl;    // Count (7:0)
+    uint8_t  counth;    // Count (15:8)
+    uint8_t  icc;       // Isochronous Command Completion
+    uint8_t  control;   // Control register
+    uint8_t  rsv1[4];   // Reserved
+} __attribute__((packed)) FIS_REG_H2D;
+
+// Command Table (256-byte aligned)
+typedef struct {
+    uint8_t  cfis[64];      // Command FIS
+    uint8_t  acmd[16];      // ATAPI Command
+    uint8_t  rsv[48];       // Reserved
+    HBA_PRDT_ENTRY prdt[];  // PRDT entries (variable, at least 1)
+} __attribute__((packed)) HBA_CMD_TBL;
+
+// ============================================================================
+// Port Signature Values
+// ============================================================================
+
+#define SATA_SIG_ATA    0x00000101  // SATA drive
+#define SATA_SIG_ATAPI  0xEB140101  // SATAPI drive
+#define SATA_SIG_SEMB   0xC33C0101  // Enclosure management bridge
+#define SATA_SIG_PM     0x96690101  // Port multiplier
+
+// ============================================================================
+// Port Command Bits
+// ============================================================================
+
+#define HBA_PORT_CMD_ST     0x0001  // Start
+#define HBA_PORT_CMD_FRE    0x0010  // FIS Receive Enable
+#define HBA_PORT_CMD_FR     0x4000  // FIS Receive Running
+#define HBA_PORT_CMD_CR     0x8000  // Command List Running
+
+// ============================================================================
+// ATA Commands
+// ============================================================================
+
+#define ATA_CMD_READ_DMA_EX  0x25
+#define ATA_CMD_WRITE_DMA_EX 0x35
+#define ATA_CMD_IDENTIFY     0xEC
+
+// ============================================================================
+// Public API
+// ============================================================================
+
+void ahci_init(void);
+int ahci_read_sectors(int port_num, uint64_t lba, uint32_t count, uint8_t *buffer);
+int ahci_write_sectors(int port_num, uint64_t lba, uint32_t count, const uint8_t *buffer);
+int ahci_get_port_count(void);
+bool ahci_port_is_active(int port_num);
+
+#endif

src/dev/disk.h

@@ -8,6 +8,7 @@
 #include <stdbool.h>
 
 #define SECTOR_SIZE 512
+#define MAX_DISKS 16
 
 typedef enum {
     DISK_TYPE_RAM,
@@ -17,26 +18,45 @@ typedef enum {
 } DiskType;
 
 typedef struct Disk {
-    char letter;            
+    char devname[16];           // Device name: "sda", "sdb", "sda1", etc.
     DiskType type;
     bool is_fat32;
-    char name[32];
-    uint32_t partition_lba_offset;  // LBA offset of FAT32 partition (0 for raw)
-    
+    char label[32];             // Human-readable label
+    uint32_t partition_lba_offset;  // LBA offset of partition (0 for whole disk)
+    uint32_t total_sectors;     // Total sectors on this device/partition
+
     // Function pointers for driver operations
     int (*read_sector)(struct Disk *disk, uint32_t sector, uint8_t *buffer);
     int (*write_sector)(struct Disk *disk, uint32_t sector, const uint8_t *buffer);
-    
+
     // Private driver data
-    void *driver_data; 
+    void *driver_data;
+
+    // Parent disk (for partitions — points to the whole-disk Disk)
+    struct Disk *parent;
+    bool is_partition;
+    bool registered;
 } Disk;
 
+// Initialization and scanning
 void disk_manager_init(void);
-void disk_manager_scan(void); // Scans for new disks
-Disk* disk_get_by_letter(char letter);
-char disk_get_next_free_letter(void);
+void disk_manager_scan(void);
+
+// Device registration
 void disk_register(Disk *disk);
+void disk_register_partition(Disk *parent, uint32_t lba_offset, uint32_t sector_count,
+                             bool is_fat32, int part_num);
+
+// Lookup
+Disk* disk_get_by_name(const char *devname);
 int disk_get_count(void);
 Disk* disk_get_by_index(int index);
 
+// Auto-naming helpers
+const char* disk_get_next_dev_name(void);   // Returns "sda", "sdb", etc.
+
+// Backward compat (deprecated — wraps disk_get_by_name)
+Disk* disk_get_by_letter(char letter);
+char disk_get_next_free_letter(void);
+
 #endif

src/dev/disk_manager.c

@@ -5,15 +5,44 @@
 #include "pci.h"
 #include "memory_manager.h"
 #include "io.h"
-#include "wm.h" 
+#include "wm.h"
+#include "ahci.h"
+#include "../fs/vfs.h"
+#include "../fs/fat32.h"
+#include "../sys/spinlock.h"
 #include <stddef.h>
 
-#define MAX_DISKS 26
+static spinlock_t ide_lock = SPINLOCK_INIT;
 
 static Disk *disks[MAX_DISKS];
 static int disk_count = 0;
+static int next_drive_letter_idx = 0;  // For backward compat
+static int next_sd_index = 0;  // For sda, sdb, sdc...
 
-// === ATA Definitions ===
+extern void serial_write(const char *str);
+extern void serial_write_num(uint64_t num);
+extern void log_ok(const char *msg);
+extern void log_fail(const char *msg);
+
+// === String Helpers ===
+
+static void dm_strcpy(char *dest, const char *src) {
+    while (*src) *dest++ = *src++;
+    *dest = 0;
+}
+
+static int dm_strcmp(const char *a, const char *b) {
+    while (*a && *a == *b) { a++; b++; }
+    return (unsigned char)*a - (unsigned char)*b;
+}
+
+static int dm_strlen(const char *s) {
+    int n = 0;
+    while (s[n]) n++;
+    return n;
+}
+
+// === ATA Definitions (Legacy IDE PIO — kept as fallback) ===
 
 #define ATA_PRIMARY_IO   0x1F0
 #define ATA_PRIMARY_CTRL 0x3F6
@@ -35,101 +64,91 @@ static int disk_count = 0;
 #define ATA_CMD_WRITE_PIO  0x30
 #define ATA_CMD_IDENTIFY   0xEC
 
-#define ATA_SR_BSY     0x80    // Busy
-#define ATA_SR_DRDY    0x40    // Drive ready
-#define ATA_SR_DF      0x20    // Drive write fault
-#define ATA_SR_DSC     0x10    // Drive seek complete
-#define ATA_SR_DRQ     0x08    // Data request ready
-#define ATA_SR_CORR    0x04    // Corrected data
-#define ATA_SR_IDX     0x02    // Index
-#define ATA_SR_ERR     0x01    // Error
+#define ATA_SR_BSY     0x80
+#define ATA_SR_DRDY    0x40
+#define ATA_SR_DF      0x20
+#define ATA_SR_DSC     0x10
+#define ATA_SR_DRQ     0x08
+#define ATA_SR_CORR    0x04
+#define ATA_SR_IDX     0x02
+#define ATA_SR_ERR     0x01
 
 typedef struct {
     uint16_t port_base;
     bool slave;
 } ATADriverData;
 
-// === Helpers ===
+// === ATA PIO Driver ===
 
-static void dm_strcpy(char *dest, const char *src) {
-    while (*src) *dest++ = *src++;
-    *dest = 0;
+static int ata_wait_bsy(uint16_t port_base) {
+    int timeout = 10000000;
+    while ((inb(port_base + ATA_REG_STATUS) & ATA_SR_BSY) && --timeout > 0);
+    return timeout <= 0 ? -1 : 0;
 }
 
-void disk_register(Disk *disk);
-
-
-static int ramdisk_read(Disk *disk, uint32_t sector, uint8_t *buffer) {
-    (void)disk; (void)sector; (void)buffer;
-    return 0; 
-}
-
-static int ramdisk_write(Disk *disk, uint32_t sector, const uint8_t *buffer) {
-    (void)disk; (void)sector; (void)buffer;
+static int ata_wait_drq(uint16_t port_base) {
+    int timeout = 10000000;
+    while (!(inb(port_base + ATA_REG_STATUS) & (ATA_SR_DRQ | ATA_SR_ERR)) && --timeout > 0);
+    if (timeout <= 0 || (inb(port_base + ATA_REG_STATUS) & ATA_SR_ERR)) return -1;
     return 0;
 }
 
-
-static void ata_wait_bsy(uint16_t port_base) {
-    while (inb(port_base + ATA_REG_STATUS) & ATA_SR_BSY);
-}
-
-static void ata_wait_drq(uint16_t port_base) {
-    while (!(inb(port_base + ATA_REG_STATUS) & ATA_SR_DRQ));
-}
-
-// Returns 1 if drive exists, 0 otherwise
 static int ata_identify(uint16_t port_base, bool slave) {
-    // Select Drive
     outb(port_base + ATA_REG_HDDEVSEL, slave ? 0xB0 : 0xA0);
-    // Zero out sector count and LBA registers
     outb(port_base + ATA_REG_SEC_COUNT0, 0);
     outb(port_base + ATA_REG_LBA0, 0);
     outb(port_base + ATA_REG_LBA1, 0);
     outb(port_base + ATA_REG_LBA2, 0);
-    
-    // Send Identify command
+
     outb(port_base + ATA_REG_COMMAND, ATA_CMD_IDENTIFY);
-    
-    // Check if status is 0 (no drive)
+
     uint8_t status = inb(port_base + ATA_REG_STATUS);
     if (status == 0) return 0;
-    
-    // Wait until BSY clears
+
     int timeout = 10000;
     while ((inb(port_base + ATA_REG_STATUS) & ATA_SR_BSY) && --timeout > 0) {
         status = inb(port_base + ATA_REG_STATUS);
-        if (status == 0) return 0; // Check again
+        if (status == 0) return 0;
     }
-    if (timeout <= 0) return 0; // Hardware didn't respond
-    
-    // Check for error
-    if (inb(port_base + ATA_REG_STATUS) & ATA_SR_ERR) {
-        return 0; // Error, likely not ATA
-    }
-    
-    // Wait for DRQ or ERR
-    while (!(inb(port_base + ATA_REG_STATUS) & (ATA_SR_DRQ | ATA_SR_ERR)));
-    
+    if (timeout <= 0) return 0;
+
     if (inb(port_base + ATA_REG_STATUS) & ATA_SR_ERR) return 0;
 
-    // Read 256 words (512 bytes) of identity data
+    if (ata_wait_drq(port_base) != 0) return 0;
+
+    if (inb(port_base + ATA_REG_STATUS) & ATA_SR_ERR) return 0;
+
+    uint32_t sectors = 0;
     for (int i = 0; i < 256; i++) {
         uint16_t data = inw(port_base + ATA_REG_DATA);
-        (void)data;
+        if (i == 60) sectors |= (uint32_t)data;
+        if (i == 61) sectors |= (uint32_t)data << 16;
     }
-    
-    return 1;
+
+    return sectors;
 }
 
 static int ata_read_sector(Disk *disk, uint32_t lba, uint8_t *buffer) {
     ATADriverData *data = (ATADriverData*)disk->driver_data;
     uint16_t port_base = data->port_base;
     bool slave = data->slave;
-    
-    ata_wait_bsy(port_base);
-    
-    // Select drive and send highest 4 bits of LBA
+
+    // For partition reads, add the partition LBA offset
+    if (disk->is_partition && disk->parent) {
+        lba += disk->partition_lba_offset;
+        // Use parent's driver
+        data = (ATADriverData*)disk->parent->driver_data;
+        port_base = data->port_base;
+        slave = data->slave;
+    }
+
+    uint64_t flags = spinlock_acquire_irqsave(&ide_lock);
+
+    if (ata_wait_bsy(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+
     outb(port_base + ATA_REG_HDDEVSEL, 0xE0 | (slave << 4) | ((lba >> 24) & 0x0F));
     outb(port_base + ATA_REG_FEATURES, 0x00);
     outb(port_base + ATA_REG_SEC_COUNT0, 1);
@@ -137,25 +156,45 @@ static int ata_read_sector(Disk *disk, uint32_t lba, uint8_t *buffer) {
     outb(port_base + ATA_REG_LBA1, (uint8_t)(lba >> 8));
     outb(port_base + ATA_REG_LBA2, (uint8_t)(lba >> 16));
     outb(port_base + ATA_REG_COMMAND, ATA_CMD_READ_PIO);
-    
-    ata_wait_bsy(port_base);
-    ata_wait_drq(port_base);
-    
+
+    if (ata_wait_bsy(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+    if (ata_wait_drq(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+
     uint16_t *ptr = (uint16_t*)buffer;
     for (int i = 0; i < 256; i++) {
         ptr[i] = inw(port_base + ATA_REG_DATA);
     }
-    
-    return 0; // Success
+
+    spinlock_release_irqrestore(&ide_lock, flags);
+    return 0;
 }
 
 static int ata_write_sector(Disk *disk, uint32_t lba, const uint8_t *buffer) {
     ATADriverData *data = (ATADriverData*)disk->driver_data;
     uint16_t port_base = data->port_base;
     bool slave = data->slave;
-    
-    ata_wait_bsy(port_base);
-    
+
+    // For partition writes, add the partition LBA offset
+    if (disk->is_partition && disk->parent) {
+        lba += disk->partition_lba_offset;
+        data = (ATADriverData*)disk->parent->driver_data;
+        port_base = data->port_base;
+        slave = data->slave;
+    }
+
+    uint64_t flags = spinlock_acquire_irqsave(&ide_lock);
+
+    if (ata_wait_bsy(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+
     outb(port_base + ATA_REG_HDDEVSEL, 0xE0 | (slave << 4) | ((lba >> 24) & 0x0F));
     outb(port_base + ATA_REG_FEATURES, 0x00);
     outb(port_base + ATA_REG_SEC_COUNT0, 1);
@@ -163,75 +202,133 @@ static int ata_write_sector(Disk *disk, uint32_t lba, const uint8_t *buffer) {
     outb(port_base + ATA_REG_LBA1, (uint8_t)(lba >> 8));
     outb(port_base + ATA_REG_LBA2, (uint8_t)(lba >> 16));
     outb(port_base + ATA_REG_COMMAND, ATA_CMD_WRITE_PIO);
-    
-    ata_wait_bsy(port_base);
-    ata_wait_drq(port_base);
-    
+
+    if (ata_wait_bsy(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+    if (ata_wait_drq(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+
     const uint16_t *ptr = (const uint16_t*)buffer;
     for (int i = 0; i < 256; i++) {
         outw(port_base + ATA_REG_DATA, ptr[i]);
     }
-    
-    // Flush / Sync
+
     outb(port_base + ATA_REG_COMMAND, 0xE7); // Cache Flush
-    ata_wait_bsy(port_base);
-    
+    if (ata_wait_bsy(port_base) != 0) {
+        spinlock_release_irqrestore(&ide_lock, flags);
+        return -1;
+    }
+
+    spinlock_release_irqrestore(&ide_lock, flags);
     return 0;
 }
 
+// === Device Naming ===
 
-char disk_get_next_free_letter(void) {
-    for (int i = 0; i < MAX_DISKS; i++) {
-        char letter = 'A' + i;
-        bool used = false;
-        for (int j = 0; j < disk_count; j++) {
-            if (disks[j]->letter == letter) {
-                used = true;
-                break;
-            }
-        }
-        if (!used) return letter;
-    }
-    return 0; // No free letters
+const char* disk_get_next_dev_name(void) {
+    static char name[8];
+    name[0] = 's';
+    name[1] = 'd';
+    name[2] = 'a' + next_sd_index;
+    name[3] = 0;
+    next_sd_index++;
+    return name;
 }
 
+// === Registration ===
+
 void disk_register(Disk *disk) {
     if (disk_count >= MAX_DISKS) return;
-    
-    // Ensure letter is unique
-    if (disk->letter == 0) {
-        disk->letter = disk_get_next_free_letter();
+
+    // Auto-assign devname if empty
+    if (disk->devname[0] == 0) {
+        const char *n = disk_get_next_dev_name();
+        dm_strcpy(disk->devname, n);
     }
-    
+
+    disk->registered = true;
     disks[disk_count++] = disk;
+
+    serial_write("[DISK] Registered /dev/");
+    serial_write(disk->devname);
+    serial_write(" (");
+    serial_write(disk->label);
+    serial_write(")\n");
 }
 
-void disk_manager_init(void) {
-    for (int i = 0; i < MAX_DISKS; i++) {
-        disks[i] = NULL;
+void disk_register_partition(Disk *parent, uint32_t lba_offset, uint32_t sector_count,
+                             bool is_fat32, int part_num) {
+    if (disk_count >= MAX_DISKS) return;
+
+    Disk *part = (Disk*)kmalloc(sizeof(Disk));
+    if (!part) return;
+
+    // Build name: parent_devname + partition number (e.g. "sda1")
+    int len = dm_strlen(parent->devname);
+    for (int i = 0; i < len; i++) part->devname[i] = parent->devname[i];
+    part->devname[len] = '0' + part_num;
+    part->devname[len + 1] = 0;
+
+    part->type = parent->type;
+    part->is_fat32 = is_fat32;
+    dm_strcpy(part->label, is_fat32 ? "FAT32 Partition" : "Unknown Partition");
+    part->partition_lba_offset = lba_offset;
+    part->total_sectors = sector_count;
+    part->read_sector = parent->read_sector;
+    part->write_sector = parent->write_sector;
+    part->driver_data = parent->driver_data;
+    part->parent = parent;
+    part->is_partition = true;
+    part->registered = true;
+
+    disks[disk_count++] = part;
+
+    serial_write("[DISK] Registered /dev/");
+    serial_write(part->devname);
+    serial_write(" (LBA offset ");
+    serial_write_num(lba_offset);
+    serial_write(", ");
+    serial_write_num(sector_count);
+    serial_write(" sectors, FAT32=");
+    serial_write(" sectors, FAT32=");
+    serial_write(is_fat32 ? "yes" : "no");
+    serial_write(")\n");
+
+    if (is_fat32) {
+        // Try to initialize and mount FAT32 volume to VFS
+        void *vol = fat32_mount_volume(part);
+        if (vol) {
+            char mount_path[32];
+            mount_path[0] = '/';
+            mount_path[1] = 'd'; mount_path[2] = 'e'; mount_path[3] = 'v'; mount_path[4] = '/';
+            dm_strcpy(mount_path + 5, part->devname);
+            
+            if (vfs_mount(mount_path, part->devname, "fat32", fat32_get_realfs_ops(), vol)) {
+                char ok_msg[64];
+                dm_strcpy(ok_msg, "Mounted ");
+                dm_strcpy(ok_msg + 8, mount_path);
+                log_ok(ok_msg);
+                wm_notify_fs_change();
+            } else {
+                char fail_msg[64];
+                dm_strcpy(fail_msg, "Failed to mount ");
+                dm_strcpy(fail_msg + 16, mount_path);
+                log_fail(fail_msg);
+            }
+        }
     }
-    disk_count = 0;
-
-    // Register A: (Ramdisk)
-    Disk *ramdisk = (Disk*)kmalloc(sizeof(Disk));
-    ramdisk->letter = 'A';
-    ramdisk->type = DISK_TYPE_RAM;
-    ramdisk->is_fat32 = true; // Ramdisk is always formatted
-    dm_strcpy(ramdisk->name, "RAM");
-    ramdisk->read_sector = ramdisk_read;
-    ramdisk->write_sector = ramdisk_write;
-    ramdisk->driver_data = NULL;
-    ramdisk->partition_lba_offset = 0;
-    
-    disk_register(ramdisk);
 }
 
-Disk* disk_get_by_letter(char letter) {
-    // Uppercase
-    if (letter >= 'a' && letter <= 'z') letter -= 32;
-    
+// === Lookup ===
+
+Disk* disk_get_by_name(const char *devname) {
+    if (!devname) return NULL;
     for (int i = 0; i < disk_count; i++) {
-        if (disks[i]->letter == letter) {
+        if (dm_strcmp(disks[i]->devname, devname) == 0) {
             return disks[i];
         }
     }
@@ -247,130 +344,182 @@ Disk* disk_get_by_index(int index) {
     return disks[index];
 }
 
+// === Backward Compat (deprecated) ===
 
-// === MBR Partition Table Structures ===
+char disk_get_next_free_letter(void) {
+    char letter = 'B' + next_drive_letter_idx++;
+    if (letter > 'Z') return 0;
+    return letter;
+}
+
+Disk* disk_get_by_letter(char letter) {
+    // Maps old letter scheme: A=ramfs (not a block device), B+=first real disk, etc.
+    if (letter >= 'a' && letter <= 'z') letter -= 32;
+
+    // A: was the ramdisk — return NULL since ramfs is now VFS-managed
+    if (letter == 'A') return NULL;
+
+    // B-Z map to disk indices 0, 1, 2...
+    // Find real disks (non-RAM, non-partition-parent)
+    int real_idx = 0;
+    for (int i = 0; i < disk_count; i++) {
+        if (disks[i]->is_partition && disks[i]->is_fat32) {
+            if (real_idx == (letter - 'B')) {
+                return disks[i];
+            }
+            real_idx++;
+        }
+    }
+    return NULL;
+}
+
+// === MBR Partition Table ===
 
 typedef struct {
-    uint8_t  status;           // 0x80 = bootable, 0x00 = inactive
-    uint8_t  chs_first[3];    // CHS of first sector
-    uint8_t  type;             // Partition type
-    uint8_t  chs_last[3];     // CHS of last sector
-    uint32_t lba_start;        // LBA of first sector
-    uint32_t sector_count;     // Number of sectors
+    uint8_t  status;
+    uint8_t  chs_first[3];
+    uint8_t  type;
+    uint8_t  chs_last[3];
+    uint32_t lba_start;
+    uint32_t sector_count;
 } __attribute__((packed)) MBR_PartitionEntry;
 
-// FAT32 partition type codes
 #define PART_TYPE_FAT32     0x0B
 #define PART_TYPE_FAT32_LBA 0x0C
 
-// Check if sector contains a valid FAT32 BPB (Volume Boot Record)
 static bool is_fat32_bpb(const uint8_t *sector) {
-    // Must have 0xAA55 boot signature
     if (sector[510] != 0x55 || sector[511] != 0xAA) return false;
-    
-    // Check for FAT32 filesystem string at offset 82
-    // "FAT32   " in the fs_type field of the BPB
+
     if (sector[82] == 'F' && sector[83] == 'A' && sector[84] == 'T' &&
         sector[85] == '3' && sector[86] == '2') {
         return true;
     }
-    
-    // Also accept if bytes_per_sector is 512 and sectors_per_fat_16 is 0
-    // (FAT32 always has sectors_per_fat_16 == 0)
+
     uint16_t bps = *(uint16_t*)&sector[11];
     uint16_t spf16 = *(uint16_t*)&sector[22];
     uint32_t spf32 = *(uint32_t*)&sector[36];
     if (bps == 512 && spf16 == 0 && spf32 > 0) {
         return true;
     }
-    
+
     return false;
 }
 
-// Parse MBR partition table and find a FAT32 partition.
-// Sets disk->partition_lba_offset and returns true if found.
-static bool detect_fat32_partition(Disk *disk) {
+// Parse MBR and register each partition as a child block device
+static void parse_mbr_partitions(Disk *disk) {
     uint8_t *buffer = (uint8_t*)kmalloc(512);
-    if (!buffer) return false;
-    
-    // Read sector 0 (MBR or raw BPB)
+    if (!buffer) return;
+
     if (disk->read_sector(disk, 0, buffer) != 0) {
         kfree(buffer);
-        return false;
+        return;
     }
-    
-    // Must have 0xAA55 boot signature
+
+    // Check for valid MBR signature
     if (buffer[510] != 0x55 || buffer[511] != 0xAA) {
         kfree(buffer);
-        return false;
+        return;
     }
-    
-    // Check MBR partition table entries (4 entries at offset 446)
+
     MBR_PartitionEntry *partitions = (MBR_PartitionEntry*)&buffer[446];
-    
+    int part_num = 1;
+
     for (int i = 0; i < 4; i++) {
-        if (partitions[i].type == PART_TYPE_FAT32 ||
-            partitions[i].type == PART_TYPE_FAT32_LBA) {
-            
-            uint32_t part_lba = partitions[i].lba_start;
-            
-            // Read the partition's first sector to verify it's a valid FAT32 BPB
+        uint32_t start = partitions[i].lba_start;
+        uint32_t size = partitions[i].sector_count;
+        uint8_t type = partitions[i].type;
+
+        if (type == 0x00) continue; // Empty entry
+        if (size == 0) continue;
+        if (start >= disk->total_sectors) continue; // Invalid start
+        
+        bool fat32 = false;
+        if (type == PART_TYPE_FAT32 || type == PART_TYPE_FAT32_LBA) {
+            // Verify by reading the BPB
             uint8_t *pbuf = (uint8_t*)kmalloc(512);
-            if (!pbuf) { kfree(buffer); return false; }
-            
-            if (disk->read_sector(disk, part_lba, pbuf) == 0 && is_fat32_bpb(pbuf)) {
-                disk->partition_lba_offset = part_lba;
+            if (pbuf) {
+                if (disk->read_sector(disk, start, pbuf) == 0) {
+                    fat32 = is_fat32_bpb(pbuf);
+                }
                 kfree(pbuf);
-                kfree(buffer);
-                return true;
             }
-            kfree(pbuf);
         }
+
+        disk_register_partition(disk, partitions[i].lba_start,
+                                partitions[i].sector_count, fat32, part_num);
+        part_num++;
     }
-    
-    // Fallback: check if sector 0 itself is a raw FAT32 BPB (no partition table)
-    if (is_fat32_bpb(buffer)) {
+
+    // Fallback: if no partitions found, check if entire disk is a raw FAT32 volume
+    if (part_num == 1 && is_fat32_bpb(buffer)) {
+        serial_write("[DISK] No MBR partitions — raw FAT32 volume on /dev/");
+        serial_write(disk->devname);
+        serial_write("\n");
+        disk->is_fat32 = true;
         disk->partition_lba_offset = 0;
-        kfree(buffer);
-        return true;
     }
-    
+
     kfree(buffer);
-    return false;
 }
 
+// === ATA Drive Discovery ===
+
 static void try_add_ata_drive(uint16_t port, bool slave, const char *name) {
-    if (ata_identify(port, slave)) {
+    uint32_t sectors = ata_identify(port, slave);
+    if (sectors > 0) {
         Disk *new_disk = (Disk*)kmalloc(sizeof(Disk));
         if (!new_disk) return;
-        
+
         ATADriverData *data = (ATADriverData*)kmalloc(sizeof(ATADriverData));
         data->port_base = port;
         data->slave = slave;
-        
-        new_disk->letter = 0; // Auto-assign
+
+        new_disk->devname[0] = 0; // Auto-assign
         new_disk->type = DISK_TYPE_IDE;
-        dm_strcpy(new_disk->name, name);
+        dm_strcpy(new_disk->label, name);
         new_disk->read_sector = ata_read_sector;
         new_disk->write_sector = ata_write_sector;
         new_disk->driver_data = data;
         new_disk->partition_lba_offset = 0;
-        
-        // Detect FAT32 (with MBR partition support)
-        if (detect_fat32_partition(new_disk)) {
-            new_disk->is_fat32 = true;
-            disk_register(new_disk);
-        } else {
-            kfree(data);
-            kfree(new_disk);
-        }
+        new_disk->total_sectors = sectors;
+        new_disk->parent = NULL;
+        new_disk->is_partition = false;
+        new_disk->is_fat32 = false;
+
+        disk_register(new_disk);
+
+        // Parse MBR to find partitions
+        parse_mbr_partitions(new_disk);
     }
 }
 
+// === Init & Scan ===
+
+void disk_manager_init(void) {
+    for (int i = 0; i < MAX_DISKS; i++) {
+        disks[i] = NULL;
+    }
+    disk_count = 0;
+    next_sd_index = 0;
+    next_drive_letter_idx = 0;
+
+    log_ok("Disk manager ready");
+    // NOTE: Ramdisk (A:) is no longer registered here.
+    // RAMFS is managed directly by fat32.c and mounted at "/" via VFS.
+}
+
 void disk_manager_scan(void) {
-    // Probe Standard ATA Ports
-    try_add_ata_drive(ATA_PRIMARY_IO, false, "IDE1");
-    try_add_ata_drive(ATA_PRIMARY_IO, true, "IDE2");
-    try_add_ata_drive(ATA_SECONDARY_IO, false, "IDE3");
-    try_add_ata_drive(ATA_SECONDARY_IO, true, "IDE4");
+    serial_write("[DISK] Initializing AHCI (SATA DMA)...\n");
+    ahci_init();
+    
+    if (ahci_get_port_count() == 0) {
+        serial_write("[DISK] No AHCI ports found, falling back to legacy IDE...\n");
+        try_add_ata_drive(ATA_PRIMARY_IO, false, "IDE Primary Master");
+        try_add_ata_drive(ATA_PRIMARY_IO, true, "IDE Primary Slave");
+        try_add_ata_drive(ATA_SECONDARY_IO, false, "IDE Secondary Master");
+        try_add_ata_drive(ATA_SECONDARY_IO, true, "IDE Secondary Slave");
+        log_ok("IDE probing complete");
+    } else {
+        log_ok("AHCI ports initialized, skipping IDE");
+    }
 }

src/dev/pci.c

@@ -97,3 +97,23 @@ int pci_find_device_by_class(uint8_t class_code, uint8_t subclass, pci_device_t*
     }
     return 0;
 }
+
+uint32_t pci_get_bar(pci_device_t *dev, int bar_num) {
+    if (!dev || bar_num < 0 || bar_num > 5) return 0;
+    uint8_t offset = 0x10 + (bar_num * 4);
+    return pci_read_config(dev->bus, dev->device, dev->function, offset);
+}
+
+void pci_enable_bus_mastering(pci_device_t *dev) {
+    if (!dev) return;
+    uint32_t cmd = pci_read_config(dev->bus, dev->device, dev->function, 0x04);
+    cmd |= (1 << 2); // Set Bus Master bit
+    pci_write_config(dev->bus, dev->device, dev->function, 0x04, cmd);
+}
+
+void pci_enable_mmio(pci_device_t *dev) {
+    if (!dev) return;
+    uint32_t cmd = pci_read_config(dev->bus, dev->device, dev->function, 0x04);
+    cmd |= (1 << 1); // Set Memory Space bit
+    pci_write_config(dev->bus, dev->device, dev->function, 0x04, cmd);
+}

src/dev/pci.h

@@ -22,6 +22,9 @@ typedef struct {
 
 #define PCI_CLASS_NETWORK_CONTROLLER  0x02
 #define PCI_CLASS_ETHERNET_CONTROLLER 0x00
+#define PCI_CLASS_MASS_STORAGE        0x01
+#define PCI_SUBCLASS_SATA             0x06
+#define PCI_SUBCLASS_IDE              0x01
 
 uint32_t pci_read_config(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset);
 void pci_write_config(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset, uint32_t value);
@@ -35,4 +38,9 @@ int pci_enumerate_devices(pci_device_t* devices, int max_devices);
 int pci_find_device(uint16_t vendor_id, uint16_t device_id, pci_device_t* device);
 int pci_find_device_by_class(uint8_t class_code, uint8_t subclass, pci_device_t* device);
 
+// BAR access and bus mastering helpers
+uint32_t pci_get_bar(pci_device_t *dev, int bar_num);
+void pci_enable_bus_mastering(pci_device_t *dev);
+void pci_enable_mmio(pci_device_t *dev);
+
 #endif

src/dev/ps2.c

@@ -16,18 +16,19 @@ extern void serial_print_hex(uint64_t n);
 volatile uint64_t kernel_ticks = 0;
 
 uint64_t timer_handler(registers_t *regs) {
-    kernel_ticks++;
-    wm_timer_tick();
-    network_process_frames();
+    if (smp_this_cpu_id() == 0) {
+        kernel_ticks++;
+        wm_timer_tick();
+        network_process_frames();
+        
+        extern void k_beep_process(void);
+        k_beep_process();
+    }
     
-    extern void k_beep_process(void);
-    k_beep_process();
-    
-    outb(0x20, 0x20); // EOI after processing to prevent nested timer interrupts
+    outb(0x20, 0x20); 
     extern uint64_t process_schedule(uint64_t current_rsp);
     uint64_t new_rsp = process_schedule((uint64_t)regs);
     
-    // SMP: Wake AP cores to run their assigned processes
     if (smp_cpu_count() > 1) {
         lapic_send_ipi_all();
     }
@@ -37,9 +38,27 @@ uint64_t timer_handler(registers_t *regs) {
 
 // --- Keyboard ---
 static bool shift_pressed = false;
+static bool caps_lock_on = false;
 bool ps2_ctrl_pressed = false;
 static bool extended_scancode = false;
 
+static void ps2_kbd_wait_write(void) {
+    uint32_t timeout = 100000;
+    while (timeout--) {
+        if ((inb(0x64) & 2) == 0) return;
+    }
+}
+
+static void ps2_update_leds(void) {
+    uint8_t led_status = 0;
+    if (caps_lock_on) led_status |= 4;
+    
+    ps2_kbd_wait_write();
+    outb(0x60, 0xED);
+    ps2_kbd_wait_write();
+    outb(0x60, led_status);
+}
+
 static char scancode_map[128] = {
     0,  27, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b',
     '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
@@ -67,30 +86,22 @@ uint64_t keyboard_handler(registers_t *regs) {
 
     if (scancode == 0x1D) {
         ps2_ctrl_pressed = true;
-        extended_scancode = false; // Reset if Ctrl is pressed (prevents E0 1D bug)
+        extended_scancode = false; 
     } else if (scancode == 0x9D) {
         ps2_ctrl_pressed = false;
         extended_scancode = false;
     }
 
-    if (ps2_ctrl_pressed && scancode == 0x2E) {
-        extern process_t* process_get_current(void);
-        process_t* proc = process_get_current();
-        if (proc && proc->is_user && proc->is_terminal_proc && proc->ui_window) {
-            // Only kill if the associated terminal window is focused
-            if (((Window*)proc->ui_window)->focused) {
-                extern uint64_t process_terminate_current(void);
-                outb(0x20, 0x20); // EOI before context switch
-                return process_terminate_current();
-            }
-        }
-    }
+
 
     if (scancode == 0x2A || scancode == 0x36) { // Shift Down
         shift_pressed = true;
     } else if (scancode == 0xAA || scancode == 0xB6) { // Shift Up
         shift_pressed = false;
-    } else if (!(scancode & 0x80)) { // Key Press (not release)
+    } else if (scancode == 0x3A) { // Caps Lock Down
+        caps_lock_on = !caps_lock_on;
+        ps2_update_leds();
+    } else if (!(scancode & 0x80)) { // Key Press
         if (extended_scancode) {
             extended_scancode = false;
             switch (scancode) {
@@ -102,6 +113,10 @@ uint64_t keyboard_handler(registers_t *regs) {
         } else {
             char c = shift_pressed ? scancode_map_shift[scancode] : scancode_map[scancode];
             if (c) {
+                if (caps_lock_on) {
+                    if (c >= 'a' && c <= 'z') c -= 32;
+                    else if (c >= 'A' && c <= 'Z') c += 32;
+                }
                 wm_handle_key(c, true);
             }
         }
@@ -115,8 +130,13 @@ uint64_t keyboard_handler(registers_t *regs) {
                 case 0x4D: wm_handle_key(20, false); break; // Right arrow
             }
         } else {
-            char c = shift_pressed ? scancode_map_shift[scancode & 0x7F] : scancode_map[scancode & 0x7F];
+            uint8_t base_scancode = scancode & 0x7F;
+            char c = shift_pressed ? scancode_map_shift[base_scancode] : scancode_map[base_scancode];
             if (c) {
+                if (caps_lock_on) {
+                    if (c >= 'a' && c <= 'z') c -= 32;
+                    else if (c >= 'A' && c <= 'Z') c += 32;
+                }
                 wm_handle_key(c, false);
             }
         }
@@ -177,7 +197,7 @@ void mouse_init(void) {
     mouse_write(0xF6);
     mouse_read();
 
-    // Enable Wheel - Magic Sequence
+    // Enable Wheel
     mouse_write(0xF3); mouse_read(); mouse_write(200); mouse_read();
     mouse_write(0xF3); mouse_read(); mouse_write(100); mouse_read();
     mouse_write(0xF3); mouse_read(); mouse_write(80); mouse_read();
@@ -239,3 +259,7 @@ uint64_t mouse_handler(registers_t *regs) {
 void ps2_init(void) {
     mouse_init();
 }
+
+bool ps2_shift_pressed(void) {
+    return shift_pressed;
+}

src/dev/ps2.h

@@ -13,4 +13,6 @@ uint64_t timer_handler(registers_t *regs);
 uint64_t keyboard_handler(registers_t *regs);
 uint64_t mouse_handler(registers_t *regs);
 
+bool ps2_shift_pressed(void);
+
 #endif

src/fs/bootfs.c

@@ -0,0 +1,541 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+
+#include "bootfs.h"
+#include "../sys/bootfs_state.h"
+#include "vfs.h"
+#include "core/kutils.h"
+#include "core/platform.h"
+#include "core/kconsole.h"
+#include "memory_manager.h"
+
+extern void serial_write(const char *str);
+extern void serial_write_hex(uint64_t value);
+
+typedef struct {
+    char path[512];
+    int offset;
+    bool is_root;
+    bool is_metadata_dir;
+} bootfs_handle_t;
+
+static void* bootfs_open(void *fs_private, const char *path, const char *mode);
+static void bootfs_close(void *fs_private, void *handle);
+static int bootfs_read(void *fs_private, void *handle, void *buf, int size);
+static int bootfs_write(void *fs_private, void *handle, const void *buf, int size);
+static int bootfs_seek(void *fs_private, void *handle, int offset, int whence);
+static int bootfs_readdir(void *fs_private, const char *rel_path, vfs_dirent_t *entries, int max);
+static bool bootfs_mkdir(void *fs_private, const char *rel_path);
+static bool bootfs_rmdir(void *fs_private, const char *rel_path);
+static bool bootfs_unlink(void *fs_private, const char *rel_path);
+static bool bootfs_rename(void *fs_private, const char *old_path, const char *new_path);
+static bool bootfs_exists(void *fs_private, const char *rel_path);
+static bool bootfs_is_dir(void *fs_private, const char *rel_path);
+static int bootfs_get_info(void *fs_private, const char *rel_path, vfs_dirent_t *info);
+static uint32_t bootfs_get_position(void *file_handle);
+static uint32_t bootfs_get_size(void *file_handle);
+
+static vfs_fs_ops_t bootfs_ops = {
+    .open = bootfs_open,
+    .close = bootfs_close,
+    .read = bootfs_read,
+    .write = bootfs_write,
+    .seek = bootfs_seek,
+    .readdir = bootfs_readdir,
+    .mkdir = bootfs_mkdir,
+    .rmdir = bootfs_rmdir,
+    .unlink = bootfs_unlink,
+    .rename = bootfs_rename,
+    .exists = bootfs_exists,
+    .is_dir = bootfs_is_dir,
+    .get_info = bootfs_get_info,
+    .get_position = bootfs_get_position,
+    .get_size = bootfs_get_size,
+};
+
+bootfs_state_t g_bootfs_state = {0};
+
+static bool is_metadata_path(const char *path) {
+    if (!path) return false;
+    return k_strncmp(path, "metadata", 8) == 0;
+}
+
+static bool is_metadata_file(const char *path) {
+    if (k_strcmp(path, "metadata/boot_time") == 0) return true;
+    if (k_strcmp(path, "metadata/boot_flags") == 0) return true;
+    if (k_strcmp(path, "metadata/version") == 0) return true;
+    return false;
+}
+
+static void* bootfs_open(void *fs_private, const char *path, const char *mode) {
+    if (!path) path = "";
+    if (path[0] == '/') path++;
+    
+    bootfs_handle_t *h = (bootfs_handle_t*)kmalloc(sizeof(bootfs_handle_t));
+    if (!h) return NULL;
+    
+    k_memset(h, 0, sizeof(bootfs_handle_t));
+    k_strcpy(h->path, path);
+    h->offset = 0;
+    
+    if (path[0] == '\0') {
+        h->is_root = true;
+    } else if (is_metadata_path(path) && path[8] == '\0') {
+        h->is_metadata_dir = true;
+    }
+    
+    return h;
+}
+
+static void bootfs_close(void *fs_private, void *handle) {
+    if (handle) kfree(handle);
+}
+
+static int generate_metadata_content(const char *file, char *buffer, int max_size) {
+    if (!buffer || max_size <= 0) return 0;
+    
+    buffer[0] = '\0';
+    int len = 0;
+    
+    if (k_strcmp(file, "metadata/boot_time") == 0) {
+        extern uint32_t wm_get_ticks(void);
+        uint32_t ticks = wm_get_ticks();
+        
+        k_strcpy(buffer, "Boot time: ");
+        char time_buf[32];
+        k_itoa(g_bootfs_state.boot_time_ms, time_buf);
+        k_strcpy(buffer + k_strlen(buffer), time_buf);
+        k_strcpy(buffer + k_strlen(buffer), " ms\nTicks: ");
+        k_itoa(ticks, time_buf);
+        k_strcpy(buffer + k_strlen(buffer), time_buf);
+        k_strcpy(buffer + k_strlen(buffer), "\n");
+        len = k_strlen(buffer);
+    } else if (k_strcmp(file, "metadata/version") == 0) {
+        k_strcpy(buffer, "Bootloader: ");
+        k_strcpy(buffer + k_strlen(buffer), g_bootfs_state.bootloader_name);
+        k_strcpy(buffer + k_strlen(buffer), "\nVersion: ");
+        k_strcpy(buffer + k_strlen(buffer), g_bootfs_state.bootloader_version);
+        k_strcpy(buffer + k_strlen(buffer), "\n");
+        len = k_strlen(buffer);
+    } else if (k_strcmp(file, "metadata/boot_flags") == 0) {
+        k_strcpy(buffer, "Boot flags: 0x");
+        char flags_buf[8];
+        uint8_t flags = g_bootfs_state.boot_flags;
+        int hex_digit = (flags >> 4) & 0xF;
+        flags_buf[0] = hex_digit < 10 ? '0' + hex_digit : 'a' + (hex_digit - 10);
+        hex_digit = flags & 0xF;
+        flags_buf[1] = hex_digit < 10 ? '0' + hex_digit : 'a' + (hex_digit - 10);
+        flags_buf[2] = '\n';
+        flags_buf[3] = '\0';
+        k_strcpy(buffer + k_strlen(buffer), flags_buf);
+        len = k_strlen(buffer);
+    }
+    
+    return len;
+}
+
+static int bootfs_read(void *fs_private, void *handle, void *buf, int size) {
+    bootfs_handle_t *h = (bootfs_handle_t*)handle;
+    if (!h || !buf || size <= 0) return -1;
+    
+    char *content_buffer = (char*)kmalloc(4096);
+    if (!content_buffer) return -1;
+    
+    int content_len = 0;
+    
+    if (k_strcmp(h->path, "limine.conf") == 0) {
+        k_memcpy(content_buffer, g_bootfs_state.limine_conf, 
+                 g_bootfs_state.limine_conf_len);
+        content_len = g_bootfs_state.limine_conf_len;
+    } else if (k_strcmp(h->path, "kernel") == 0) {
+        k_strcpy(content_buffer, "Kernel reference\nSize: ");
+        char size_buf[32];
+        k_itoa(g_bootfs_state.kernel_size, size_buf);
+        k_strcpy(content_buffer + k_strlen(content_buffer), size_buf);
+        k_strcpy(content_buffer + k_strlen(content_buffer), " bytes\n");
+        content_len = k_strlen(content_buffer);
+    } else if (k_strcmp(h->path, "initrd") == 0) {
+        k_strcpy(content_buffer, "Initial ramdisk reference\nSize: ");
+        char size_buf[32];
+        k_itoa(g_bootfs_state.initrd_size, size_buf);
+        k_strcpy(content_buffer + k_strlen(content_buffer), size_buf);
+        k_strcpy(content_buffer + k_strlen(content_buffer), " bytes\n");
+        content_len = k_strlen(content_buffer);
+    } else if (is_metadata_file(h->path)) {
+        content_len = generate_metadata_content(h->path, content_buffer, 4096);
+    } else {
+        kfree(content_buffer);
+        return -1;
+    }
+    
+    // Handle offset and reading
+    if (h->offset >= content_len) {
+        kfree(content_buffer);
+        return 0;
+    }
+    
+    int available = content_len - h->offset;
+    int read_size = (available < size) ? available : size;
+    
+    k_memcpy(buf, content_buffer + h->offset, read_size);
+    h->offset += read_size;
+    
+    kfree(content_buffer);
+    return read_size;
+}
+
+static int bootfs_write(void *fs_private, void *handle, const void *buf, int size) {
+    bootfs_handle_t *h = (bootfs_handle_t*)handle;
+    if (!h || !buf || size <= 0) return -1;
+    
+    if (k_strcmp(h->path, "limine.conf") != 0) {
+        return -1; 
+    }
+    
+    int max_write = 2048 - h->offset;
+    if (max_write <= 0) return -1;
+    
+    int write_size = (size < max_write) ? size : max_write;
+    k_memcpy(g_bootfs_state.limine_conf + h->offset, buf, write_size);
+    h->offset += write_size;
+    
+    if (h->offset > g_bootfs_state.limine_conf_len) {
+        g_bootfs_state.limine_conf_len = h->offset;
+    }
+    
+    extern vfs_file_t* vfs_open(const char *path, const char *mode);
+    extern int vfs_write(vfs_file_t *file, const void *buf, int size);
+    extern void vfs_close(vfs_file_t *file);
+    
+    vfs_file_t *fat_conf = vfs_open("/limine.conf", "w");
+    if (fat_conf) {
+        vfs_write(fat_conf, g_bootfs_state.limine_conf, g_bootfs_state.limine_conf_len);
+        vfs_close(fat_conf);
+    }
+    
+    return write_size;
+}
+
+static int bootfs_seek(void *fs_private, void *handle, int offset, int whence) {
+    bootfs_handle_t *h = (bootfs_handle_t*)handle;
+    if (!h) return -1;
+    
+    switch (whence) {
+        case 0: // SEEK_SET
+            h->offset = offset;
+            break;
+        case 1: // SEEK_CUR
+            h->offset += offset;
+            break;
+        case 2: // SEEK_END
+            return -1;
+        default:
+            return -1;
+    }
+    
+    return h->offset;
+}
+
+static int bootfs_readdir(void *fs_private, const char *rel_path, vfs_dirent_t *entries, int max) {
+    if (!entries || max <= 0) return 0;
+    
+    if (!rel_path) rel_path = "";
+    if (rel_path[0] == '/') rel_path++;
+    
+    int count = 0;
+    
+    if (rel_path[0] == '\0') {
+        if (count < max) {
+            k_strcpy(entries[count].name, "limine.conf");
+            entries[count].size = g_bootfs_state.limine_conf_len;
+            entries[count].is_directory = 0;
+            count++;
+        }
+        
+        if (count < max) {
+            k_strcpy(entries[count].name, "kernel");
+            entries[count].size = g_bootfs_state.kernel_size;
+            entries[count].is_directory = 0;
+            count++;
+        }
+        
+        if (count < max) {
+            k_strcpy(entries[count].name, "initrd");
+            entries[count].size = g_bootfs_state.initrd_size;
+            entries[count].is_directory = 0;
+            count++;
+        }
+        
+        if (count < max) {
+            k_strcpy(entries[count].name, "metadata");
+            entries[count].size = 0;
+            entries[count].is_directory = 1;
+            count++;
+        }
+    }
+    else if (k_strcmp(rel_path, "metadata") == 0) {
+        const char *meta_files[] = {
+            "boot_time",
+            "boot_flags",
+            "version"
+        };
+        
+        for (int i = 0; i < 3 && count < max; i++) {
+            k_strcpy(entries[count].name, meta_files[i]);
+            entries[count].size = 0;
+            entries[count].is_directory = 0;
+            count++;
+        }
+    }
+    
+    return count;
+}
+
+static bool bootfs_mkdir(void *fs_private, const char *rel_path) {
+    return false;
+}
+
+static bool bootfs_rmdir(void *fs_private, const char *rel_path) {
+    if (!rel_path) rel_path = "";
+    if (rel_path[0] == '/') rel_path++;
+    
+    if (k_strcmp(rel_path, "metadata") == 0) {
+        return false; /* metadata directory is protected */
+    }
+    
+    return false; /* no other directories to remove */
+}
+
+static bool bootfs_unlink(void *fs_private, const char *rel_path) {
+    if (!rel_path) return false;
+    if (rel_path[0] == '/') rel_path++;
+    
+    /* Only limine.conf can be deleted */
+    if (k_strcmp(rel_path, "limine.conf") != 0) {
+        return false;
+    }
+    
+    /* Clear the bootfs state */
+    g_bootfs_state.limine_conf[0] = '\0';
+    g_bootfs_state.limine_conf_len = 0;
+    
+    /* Delete from partition */
+    extern bool vfs_delete(const char *path);
+    
+    bool result = vfs_delete("/limine.conf");
+    
+    if (result) {
+        serial_write("[BOOTFS] Deleted limine.conf from partition\n");
+    } else {
+        serial_write("[BOOTFS] Warning: Could not delete limine.conf from partition\n");
+    }
+    
+    return result;
+}
+
+static bool bootfs_rename(void *fs_private, const char *old_path, const char *new_path) {
+    if (!old_path || !new_path) return false;
+    
+    const char *old_rel = old_path;
+    const char *new_rel = new_path;
+    
+    if (old_rel[0] == '/') old_rel++;
+    if (new_rel[0] == '/') new_rel++;
+    
+    /* Only limine.conf can be renamed */
+    if (k_strcmp(old_rel, "limine.conf") != 0) {
+        return false;
+    }
+    
+    /* kernel and initrd are protected */
+    if (k_strcmp(new_rel, "kernel") == 0 || k_strcmp(new_rel, "initrd") == 0) {
+        return false;
+    }
+    
+    /* metadata directory is protected */
+    if (k_strncmp(new_rel, "metadata", 8) == 0) {
+        return false;
+    }
+    
+    extern bool vfs_rename(const char *old_path, const char *new_path);
+    
+    char new_partition_path[256];
+    k_strcpy(new_partition_path, "/");
+    
+    /* Manually append new_rel to new_partition_path */
+    int path_len = 0;
+    while (new_partition_path[path_len]) path_len++;
+    
+    int rel_len = 0;
+    while (new_rel[rel_len]) rel_len++;
+    
+    if (path_len + rel_len >= 256) {
+        serial_write("[BOOTFS] Error: new path too long\n");
+        return false;
+    }
+    
+    k_memcpy(new_partition_path + path_len, new_rel, rel_len + 1);
+    
+    /* Rename on partition filesystem */
+    bool result = vfs_rename("/limine.conf", new_partition_path);
+    
+    if (result) {
+        serial_write("[BOOTFS] Renamed limine.conf to ");
+        serial_write(new_rel);
+        serial_write("\n");
+    } else {
+        serial_write("[BOOTFS] Warning: Could not rename limine.conf to ");
+        serial_write(new_rel);
+        serial_write("\n");
+    }
+    
+    return result;
+}
+
+static bool bootfs_exists(void *fs_private, const char *rel_path) {
+    if (!rel_path) rel_path = "";
+    if (rel_path[0] == '/') rel_path++;
+    
+    if (rel_path[0] == '\0') return true;
+    
+    if (k_strcmp(rel_path, "limine.conf") == 0) return true;
+    if (k_strcmp(rel_path, "kernel") == 0) return true;
+    if (k_strcmp(rel_path, "initrd") == 0) return true;
+    
+    if (k_strcmp(rel_path, "metadata") == 0) return true;
+    if (is_metadata_file(rel_path)) return true;
+    
+    return false;
+}
+
+static bool bootfs_is_dir(void *fs_private, const char *rel_path) {
+    if (!rel_path) rel_path = "";
+    if (rel_path[0] == '/') rel_path++;
+    
+    if (rel_path[0] == '\0') return true;
+    if (k_strcmp(rel_path, "metadata") == 0) return true; 
+    
+    return false;
+}
+
+static int bootfs_get_info(void *fs_private, const char *rel_path, vfs_dirent_t *info) {
+    if (!info) return -1;
+    if (!rel_path) rel_path = "";
+    if (rel_path[0] == '/') rel_path++;
+    
+    k_memset(info, 0, sizeof(vfs_dirent_t));
+    
+    if (rel_path[0] == '\0') {
+        k_strcpy(info->name, "/");
+        info->is_directory = 1;
+        return 0;
+    }
+    
+    if (k_strcmp(rel_path, "limine.conf") == 0) {
+        k_strcpy(info->name, "limine.conf");
+        info->size = g_bootfs_state.limine_conf_len;
+        info->is_directory = 0;
+        return 0;
+    }
+    
+    if (k_strcmp(rel_path, "kernel") == 0) {
+        k_strcpy(info->name, "kernel");
+        info->size = g_bootfs_state.kernel_size;
+        info->is_directory = 0;
+        return 0;
+    }
+    
+    if (k_strcmp(rel_path, "initrd") == 0) {
+        k_strcpy(info->name, "initrd");
+        info->size = g_bootfs_state.initrd_size;
+        info->is_directory = 0;
+        return 0;
+    }
+    
+    if (k_strcmp(rel_path, "metadata") == 0) {
+        k_strcpy(info->name, "metadata");
+        info->is_directory = 1;
+        return 0;
+    }
+    
+    if (is_metadata_file(rel_path)) {
+        char temp_buf[4096];
+        int len = generate_metadata_content(rel_path, temp_buf, 4096);
+        k_strcpy(info->name, rel_path + 9); 
+        info->size = len;
+        info->is_directory = 0;
+        return 0;
+    }
+    
+    return -1;
+}
+
+static uint32_t bootfs_get_position(void *file_handle) {
+    bootfs_handle_t *h = (bootfs_handle_t*)file_handle;
+    if (!h) return 0;
+    return h->offset;
+}
+
+static uint32_t bootfs_get_size(void *file_handle) {
+    bootfs_handle_t *h = (bootfs_handle_t*)file_handle;
+    if (!h) return 0;
+    
+    if (k_strcmp(h->path, "limine.conf") == 0) {
+        return g_bootfs_state.limine_conf_len;
+    } else if (k_strcmp(h->path, "kernel") == 0) {
+        return g_bootfs_state.kernel_size;
+    } else if (k_strcmp(h->path, "initrd") == 0) {
+        return g_bootfs_state.initrd_size;
+    } else if (is_metadata_file(h->path)) {
+        char temp_buf[4096];
+        return generate_metadata_content(h->path, temp_buf, 4096);
+    }
+    
+    return 0;
+}
+
+vfs_fs_ops_t* bootfs_get_ops(void) {
+    return &bootfs_ops;
+}
+
+void bootfs_state_init(void) {
+    k_memset(&g_bootfs_state, 0, sizeof(bootfs_state_t));
+    
+    k_strcpy(g_bootfs_state.bootloader_name, "Limine");
+    k_strcpy(g_bootfs_state.bootloader_version, "6.0.0");
+    
+
+    g_bootfs_state.limine_conf[0] = '\0';
+    g_bootfs_state.limine_conf_len = 0;
+    
+    g_bootfs_state.kernel_size = 0;
+    g_bootfs_state.initrd_size = 0;
+    g_bootfs_state.boot_time_ms = 0;
+}
+
+void bootfs_init(void) {
+    bootfs_state_init();
+}
+
+void bootfs_refresh_from_disk(void) {
+    extern vfs_file_t* vfs_open(const char *path, const char *mode);
+    extern int vfs_read(vfs_file_t *file, void *buf, int size);
+    extern void vfs_close(vfs_file_t *file);
+    
+    vfs_file_t *boot_conf = vfs_open("/limine.conf", "r");
+    if (boot_conf) {
+        int bytes_read = vfs_read(boot_conf, g_bootfs_state.limine_conf, 2047);
+        if (bytes_read > 0) {
+            g_bootfs_state.limine_conf[bytes_read] = '\0';
+            g_bootfs_state.limine_conf_len = bytes_read;
+            serial_write("[BOOTFS] Loaded limine.conf from partition: ");
+            extern void serial_write_hex(uint64_t value);
+            serial_write_hex(bytes_read);
+            serial_write(" bytes\n");
+        }
+        vfs_close(boot_conf);
+    } else {
+        serial_write("[BOOTFS] Warning: /limine.conf not found on partition\n");
+    }
+}

src/fs/bootfs.h

@@ -0,0 +1,13 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#ifndef BOOTFS_H
+#define BOOTFS_H
+
+#include "vfs.h"
+
+void bootfs_init(void);
+void bootfs_refresh_from_disk(void);
+vfs_fs_ops_t* bootfs_get_ops(void);
+
+#endif

src/fs/fat32.h

@@ -25,7 +25,7 @@ typedef struct {
     uint16_t num_heads;             // Number of heads
     uint32_t hidden_sectors;        // Hidden sectors
     uint32_t total_sectors_32;      // Total sectors 32-bit
-    
+
     // FAT32 Specific
     uint32_t sectors_per_fat_32;    // Sectors per FAT 32-bit
     uint16_t flags;                 // Flags
@@ -61,6 +61,18 @@ typedef struct {
     uint32_t file_size;             // File size
 } __attribute__((packed)) FAT32_DirEntry;
 
+// Long File Name Directory Entry (32 bytes)
+typedef struct {
+    uint8_t order;                  // Sequence number (0x40 = last, | index)
+    uint16_t name1[5];              // Characters 1-5 (UCS-2)
+    uint8_t attr;                   // Always 0x0F
+    uint8_t type;                   // Always 0x00
+    uint8_t checksum;               // Checksum of short name
+    uint16_t name2[6];              // Characters 6-11 (UCS-2)
+    uint16_t first_cluster;         // Always 0x0000
+    uint16_t name3[2];              // Characters 12-13 (UCS-2)
+} __attribute__((packed)) FAT32_LFNEntry;
+
 // File Attributes
 #define ATTR_READ_ONLY   0x01
 #define ATTR_HIDDEN      0x02
@@ -70,6 +82,7 @@ typedef struct {
 #define ATTR_ARCHIVE     0x20
 #define ATTR_DEVICE      0x40
 #define ATTR_RESERVED    0x80
+#define ATTR_LFN         0x0F  // LFN marker (all of the above ORed)
 
 // FAT32 Constants
 #define FAT32_SECTOR_SIZE 512
@@ -88,7 +101,9 @@ typedef struct {
     bool valid;                     // Is this handle valid?
     uint32_t dir_sector;            // Sector containing the directory entry
     uint32_t dir_offset;            // Offset within that sector
-    char drive;                     // Drive letter (A, B, ...)
+    bool is_directory;              // Is this a directory?
+    uint8_t attributes;             // File attributes
+    void *volume;                   // Pointer to owning FAT32_Volume (or NULL for ramfs)
 } FAT32_FileHandle;
 
 // Directory Entry Info (for listing)
@@ -101,12 +116,23 @@ typedef struct {
     uint16_t write_time;
 } FAT32_FileInfo;
 
+// === VFS Integration ===
+// Forward-declared VFS ops type (defined in vfs.h)
+struct vfs_fs_ops;
+
+// Get VFS ops structs for registration
+struct vfs_fs_ops* fat32_get_ramfs_ops(void);
+struct vfs_fs_ops* fat32_get_realfs_ops(void);
+
+// Mount a real FAT32 volume from a block device — returns fs_private for VFS
+void* fat32_mount_volume(void *disk_ptr);
+
 // === Function Declarations ===
 
 // Initialization
 void fat32_init(void);
 
-// File Operations
+// File Operations (backward-compat wrappers — dispatch through VFS)
 FAT32_FileHandle* fat32_open(const char *path, const char *mode);
 void fat32_close(FAT32_FileHandle *handle);
 int fat32_read(FAT32_FileHandle *handle, void *buffer, int size);
@@ -124,7 +150,10 @@ bool fat32_is_directory(const char *path);
 // Listing
 int fat32_list_directory(const char *path, FAT32_FileInfo *entries, int max_entries);
 
-// Working Directory
+// Info
+int fat32_get_info(const char *path, FAT32_FileInfo *info);
+
+// Working Directory (backward compat — wraps VFS path tracking)
 bool fat32_chdir(const char *path);
 void fat32_get_current_dir(char *buffer, int size);
 bool fat32_change_drive(char drive);

src/fs/procfs.c

@@ -0,0 +1,451 @@
+#include "vfs.h"
+#include "../sys/process.h"
+#include "../sys/syscall.h"
+#include "../dev/disk.h"
+#include "memory_manager.h"
+#include "core/kutils.h"
+#include "core/platform.h"
+
+typedef struct {
+    uint32_t pid;
+    char type[32]; 
+    int offset;
+    bool is_root;
+} procfs_handle_t;
+
+void* procfs_open(void *fs_private, const char *path, const char *mode) {
+    if (path[0] == '/') path++;
+    
+    procfs_handle_t *h = (procfs_handle_t*)kmalloc(sizeof(procfs_handle_t));
+    k_memset(h, 0, sizeof(procfs_handle_t));
+    h->offset = 0;
+
+    if (path[0] == '\0') {
+        h->is_root = true;
+        return h;
+    }
+
+    if (path[0] >= '0' && path[0] <= '9') {
+        char pid_str[16];
+        int i = 0;
+        while (path[i] && path[i] != '/' && i < 15) {
+            pid_str[i] = path[i];
+            i++;
+        }
+        pid_str[i] = 0;
+        h->pid = k_atoi(pid_str);
+
+        if (path[i] == '/') {
+            k_strcpy(h->type, path + i + 1);
+        } else {
+            h->type[0] = 0; 
+        }
+        return h;
+    }
+
+    h->pid = 0xFFFFFFFF;
+    k_strcpy(h->type, path);
+    return h;
+}
+
+void procfs_close(void *fs_private, void *handle) {
+    if (handle) kfree(handle);
+}
+
+int procfs_read(void *fs_private, void *handle, void *buf, int size) {
+    procfs_handle_t *h = (procfs_handle_t*)handle;
+    if (!h) return -1;
+
+    char *out = (char*)kmalloc(16384);
+    if (!out) return -1;
+    out[0] = 0;
+
+    if (h->pid == 0xFFFFFFFF) {
+        if (k_strcmp(h->type, "version") == 0) {
+            extern void get_os_info(os_info_t *info);
+            os_info_t info;
+            get_os_info(&info);
+            k_strcpy(out, info.os_name);
+            k_strcpy(out + k_strlen(out), " [");
+            k_strcpy(out + k_strlen(out), info.os_codename);
+            k_strcpy(out + k_strlen(out), "] Version ");
+            k_strcpy(out + k_strlen(out), info.os_version);
+            k_strcpy(out + k_strlen(out), "\nKernel: ");
+            k_strcpy(out + k_strlen(out), info.kernel_name);
+            k_strcpy(out + k_strlen(out), " ");
+            k_strcpy(out + k_strlen(out), info.kernel_version);
+            k_strcpy(out + k_strlen(out), "\nBuild: ");
+            k_strcpy(out + k_strlen(out), info.build_date);
+            k_strcpy(out + k_strlen(out), " ");
+            k_strcpy(out + k_strlen(out), info.build_time);
+            k_strcpy(out + k_strlen(out), "\n");
+        } else if (k_strcmp(h->type, "uptime") == 0) {
+            extern uint32_t wm_get_ticks(void);
+            uint32_t ticks = wm_get_ticks();
+            k_itoa(ticks / 60, out);
+            k_strcpy(out + k_strlen(out), " seconds\nRaw_Ticks:");
+            char t_s[16]; k_itoa(ticks, t_s);
+            k_strcpy(out + k_strlen(out), t_s);
+            k_strcpy(out + k_strlen(out), "\n");
+        } else if (k_strcmp(h->type, "cpuinfo") == 0) {
+            extern uint32_t smp_cpu_count(void);
+            extern void platform_get_cpu_model(char *model);
+            extern void platform_get_cpu_vendor(char *vendor);
+            extern void platform_get_cpu_info(cpu_info_t *info);
+            extern void platform_get_cpu_flags(char *flags_str);
+            
+            char model[64];
+            char vendor[16];
+            char flags[1024];
+            cpu_info_t info;
+            
+            platform_get_cpu_model(model);
+            platform_get_cpu_vendor(vendor);
+            platform_get_cpu_info(&info);
+            platform_get_cpu_flags(flags);
+            
+            uint32_t cpu_count = smp_cpu_count();
+            out[0] = '\0';
+            
+            // Output info for each processor
+            for (uint32_t i = 0; i < cpu_count; i++) {
+                char buf[32];
+                
+                k_strcpy(out + k_strlen(out), "processor\t: ");
+                k_itoa(i, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "vendor_id\t: ");
+                k_strcpy(out + k_strlen(out), vendor);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "cpu family\t: ");
+                k_itoa(info.family, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "model\t\t: ");
+                k_itoa(info.model, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "model name\t: ");
+                k_strcpy(out + k_strlen(out), model);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "stepping\t: ");
+                k_itoa(info.stepping, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "microcode\t: 0x");
+                char hex[16];
+                int temp = info.microcode;
+                int hex_pos = 0;
+                for (int j = 7; j >= 0; j--) {
+                    int digit = (temp >> (j * 4)) & 0xF;
+                    hex[hex_pos++] = digit < 10 ? '0' + digit : 'a' + (digit - 10);
+                }
+                hex[hex_pos] = '\0';
+                k_strcpy(out + k_strlen(out), hex);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "cache size\t: ");
+                k_itoa(info.cache_size, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), " KB\n");
+                
+                k_strcpy(out + k_strlen(out), "physical id\t: 0\n");
+                k_strcpy(out + k_strlen(out), "siblings\t: ");
+                k_itoa(cpu_count, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "core id\t\t: ");
+                k_itoa(i, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "cpu cores\t: ");
+                k_itoa(cpu_count, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "apicid\t\t: ");
+                k_itoa(i, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "initial apicid\t: ");
+                k_itoa(i, buf);
+                k_strcpy(out + k_strlen(out), buf);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "fpu\t\t: yes\n");
+                k_strcpy(out + k_strlen(out), "fpu_exception\t: yes\n");
+                
+                k_strcpy(out + k_strlen(out), "cpuid level\t: 13\n");
+                
+                k_strcpy(out + k_strlen(out), "wp\t\t: yes\n");
+                
+                k_strcpy(out + k_strlen(out), "flags\t\t: ");
+                k_strcpy(out + k_strlen(out), flags);
+                k_strcpy(out + k_strlen(out), "\n");
+                
+                k_strcpy(out + k_strlen(out), "bugs\t\t: \n");
+                k_strcpy(out + k_strlen(out), "bogomips\t: 4800.00\n");
+                
+                if (i < cpu_count - 1) {
+                    k_strcpy(out + k_strlen(out), "\n");
+                }
+            }
+        } else if (k_strcmp(h->type, "meminfo") == 0) {
+            extern MemStats memory_get_stats(void);
+            MemStats stats = memory_get_stats();
+            char m_s[32];
+            
+            k_strcpy(out, "MemTotal:\t");
+            k_itoa(stats.total_memory / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "MemFree:\t");
+            k_itoa(stats.available_memory / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "MemAvailable:\t");
+            k_itoa(stats.available_memory / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "Buffers:\t0 kB\n");
+            k_strcpy(out + k_strlen(out), "Cached:\t\t0 kB\n");
+            
+            k_strcpy(out + k_strlen(out), "MemUsed:\t");
+            k_itoa(stats.used_memory / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "MemPeak:\t");
+            k_itoa(stats.peak_memory_used / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "SwapTotal:\t0 kB\n");
+            k_strcpy(out + k_strlen(out), "SwapFree:\t0 kB\n");
+            
+            k_strcpy(out + k_strlen(out), "Dirty:\t\t0 kB\n");
+            k_strcpy(out + k_strlen(out), "Writeback:\t0 kB\n");
+            k_strcpy(out + k_strlen(out), "AnonPages:\t");
+            k_itoa(stats.used_memory / 1024, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), " kB\n");
+            
+            k_strcpy(out + k_strlen(out), "Mapped:\t\t0 kB\n");
+            k_strcpy(out + k_strlen(out), "Shmem:\t\t0 kB\n");
+            
+            k_strcpy(out + k_strlen(out), "Blocks:\t\t");
+            k_itoa(stats.allocated_blocks, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), "\n");
+            
+            k_strcpy(out + k_strlen(out), "FreeBlocks:\t");
+            k_itoa(stats.free_blocks, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), "\n");
+            
+            k_strcpy(out + k_strlen(out), "Fragmentation:\t");
+            k_itoa(stats.fragmentation_percent, m_s);
+            k_strcpy(out + k_strlen(out), m_s);
+            k_strcpy(out + k_strlen(out), "%\n");
+        } else if (k_strcmp(h->type, "devices") == 0) {
+            extern int disk_get_count(void);
+            extern Disk* disk_get_by_index(int index);
+            int dcount = disk_get_count();
+            out[0] = '\0';
+            
+            k_strcpy(out, "Character devices:\n");
+            k_strcpy(out + k_strlen(out), "  1 mem\n");
+            k_strcpy(out + k_strlen(out), "  4 tty\n");
+            k_strcpy(out + k_strlen(out), "  5 cua\n");
+            k_strcpy(out + k_strlen(out), "  7 vcs\n");
+            k_strcpy(out + k_strlen(out), "  8 stdin\n");
+            k_strcpy(out + k_strlen(out), " 13 input\n");
+            k_strcpy(out + k_strlen(out), " 14 sound\n");
+            k_strcpy(out + k_strlen(out), " 29 fb\n");
+            k_strcpy(out + k_strlen(out), "189 usb\n\n");
+            
+            k_strcpy(out + k_strlen(out), "Block devices:\n");
+            for (int i = 0; i < dcount; i++) {
+                Disk *d = disk_get_by_index(i);
+                if (d && !d->is_partition) {
+                    k_strcpy(out + k_strlen(out), "  8 ");
+                    k_strcpy(out + k_strlen(out), d->devname);
+                    k_strcpy(out + k_strlen(out), "\n");
+                }
+            }
+            k_strcpy(out + k_strlen(out), " 11 sr\n");
+            k_strcpy(out + k_strlen(out), "253 virtblk\n");
+        }
+    }
+ else {
+        process_t *proc = process_get_by_pid(h->pid);
+        if (!proc) { kfree(out); return -1; }
+
+        if (k_strcmp(h->type, "name") == 0 || k_strcmp(h->type, "cmdline") == 0) {
+            k_strcpy(out, proc->name);
+            k_strcpy(out + k_strlen(out), "\n");
+        } else if (k_strcmp(h->type, "cwd") == 0) {
+            k_strcpy(out, proc->cwd);
+            k_strcpy(out + k_strlen(out), "\n");
+        } else if (k_strcmp(h->type, "status") == 0) {
+            k_strcpy(out, "Name: ");
+            k_strcpy(out + k_strlen(out), proc->name);
+            k_strcpy(out + k_strlen(out), "\nPID: ");
+            char pid_s[16]; k_itoa(proc->pid, pid_s);
+            k_strcpy(out + k_strlen(out), pid_s);
+            k_strcpy(out + k_strlen(out), "\nState: RUNNING\nMemory: ");
+            uint64_t mem_val = proc->used_memory;
+            if (h->pid == 0) {
+                extern MemStats memory_get_stats(void);
+                mem_val = memory_get_stats().used_memory;
+            }
+            char mem_s[32]; k_itoa(mem_val / 1024, mem_s);
+            k_strcpy(out + k_strlen(out), mem_s);
+            k_strcpy(out + k_strlen(out), " KB\nTicks: ");
+            char tick_s[32]; k_itoa(proc->ticks, tick_s);
+            k_strcpy(out + k_strlen(out), tick_s);
+            k_strcpy(out + k_strlen(out), "\nIdle: ");
+            k_strcpy(out + k_strlen(out), proc->is_idle ? "1" : "0");
+            k_strcpy(out + k_strlen(out), "\n");
+        }
+    }
+
+    int len = k_strlen(out);
+    if (h->offset >= len) { kfree(out); return 0; }
+
+    int to_copy = len - h->offset;
+    if (to_copy > size) to_copy = size;
+
+    k_memcpy(buf, out + h->offset, to_copy);
+    h->offset += to_copy;
+    kfree(out);
+    return to_copy;
+}
+
+int procfs_write(void *fs_private, void *handle, const void *buf, int size) {
+    procfs_handle_t *h = (procfs_handle_t*)handle;
+    if (!h || h->pid == 0xFFFFFFFF) return -1;
+
+    if (k_strcmp(h->type, "signal") == 0) {
+        char cmd[16];
+        int to_copy = size < 15 ? size : 15;
+        k_memcpy(cmd, buf, to_copy);
+        cmd[to_copy] = 0;
+
+        if (k_strcmp(cmd, "9") == 0 || k_strcmp(cmd, "kill") == 0) {
+            process_t *proc = process_get_by_pid(h->pid);
+            if (proc && proc->pid != 0) {
+                process_terminate(proc);
+                return size;
+            }
+        }
+    }
+
+    return -1;
+}
+
+int procfs_readdir(void *fs_private, const char *path, vfs_dirent_t *entries, int max) {
+    if (path[0] == '/') path++;
+
+    if (path[0] == '\0') {
+        int out = 0;
+        k_strcpy(entries[out++].name, "version");
+        entries[out-1].is_directory = 0;
+        k_strcpy(entries[out++].name, "uptime");
+        entries[out-1].is_directory = 0;
+        k_strcpy(entries[out++].name, "cpuinfo");
+        entries[out-1].is_directory = 0;
+        k_strcpy(entries[out++].name, "meminfo");
+        entries[out-1].is_directory = 0;
+        k_strcpy(entries[out++].name, "devices");
+        entries[out-1].is_directory = 0;
+
+        extern process_t processes[];
+        for (int i = 0; i < 16 && out < max; i++) {
+            if (processes[i].pid != 0xFFFFFFFF) {
+                k_itoa(processes[i].pid, entries[out].name);
+                entries[out].is_directory = 1;
+                entries[out].size = 0;
+                out++;
+            }
+        }
+        return out;
+    }
+
+    if (path[0] >= '0' && path[0] <= '9') {
+        int out = 0;
+        k_strcpy(entries[out++].name, "name");
+        k_strcpy(entries[out++].name, "status");
+        k_strcpy(entries[out++].name, "cmdline");
+        k_strcpy(entries[out++].name, "cwd");
+        k_strcpy(entries[out++].name, "signal");
+        for(int i=0; i<out; i++) entries[i].is_directory = 0;
+        return out;
+    }
+
+    return 0;
+}
+
+bool procfs_exists(void *fs_private, const char *path) {
+    if (path[0] == '/') path++;
+    if (path[0] == '\0') return true;
+
+    if (path[0] >= '0' && path[0] <= '9') {
+        char pid_str[16];
+        int i = 0;
+        while (path[i] && path[i] != '/' && i < 15) {
+            pid_str[i] = path[i];
+            i++;
+        }
+        pid_str[i] = 0;
+        uint32_t pid = k_atoi(pid_str);
+        if (process_get_by_pid(pid)) return true;
+    }
+
+    if (k_strcmp(path, "version") == 0 || k_strcmp(path, "uptime") == 0) return true;
+    if (k_strcmp(path, "cpuinfo") == 0 || k_strcmp(path, "meminfo") == 0) return true;
+    if (k_strcmp(path, "devices") == 0) return true;
+
+    return false;
+}
+
+bool procfs_is_dir(void *fs_private, const char *path) {
+    if (path[0] == '/') path++;
+    if (path[0] == '\0') return true;
+
+    if (path[0] >= '0' && path[0] <= '9') {
+        int i = 0;
+        while (path[i] && path[i] != '/') i++;
+        if (path[i] == '\0') return true; 
+        return false; 
+    }
+
+    return false; 
+}
+
+vfs_fs_ops_t procfs_ops = {
+    .open = procfs_open,
+    .close = procfs_close,
+    .read = procfs_read,
+    .write = procfs_write,
+    .readdir = procfs_readdir,
+    .exists = procfs_exists,
+    .is_dir = procfs_is_dir 
+};
+
+vfs_fs_ops_t* procfs_get_ops(void) {
+    return &procfs_ops;
+}

src/fs/procfs.h

@@ -0,0 +1,8 @@
+#ifndef PROCFS_H
+#define PROCFS_H
+
+#include "vfs.h"
+
+vfs_fs_ops_t* procfs_get_ops(void);
+
+#endif

src/fs/sysfs.c

@@ -0,0 +1,181 @@
+#include "vfs.h"
+#include "../sys/kernel_subsystem.h"
+#include "memory_manager.h"
+#include "core/kutils.h"
+
+typedef struct {
+    kernel_subsystem_t *sub;
+    subsystem_file_t *file;
+    int offset;
+} sysfs_handle_t;
+
+static void* sysfs_open(void *fs_private, const char *path, const char *mode) {
+    if (path[0] == '/') path++;
+    if (path[0] == '\0') return NULL;
+
+    kernel_subsystem_t *sub = NULL;
+    int last_slash = -1;
+    for (int j = 0; path[j]; j++) if (path[j] == '/') last_slash = j;
+
+    if (last_slash != -1) {
+        char prefix[64];
+        k_memcpy(prefix, path, last_slash);
+        prefix[last_slash] = 0;
+        sub = subsystem_get_by_name(prefix);
+        
+        if (sub) {
+            const char *filename = path + last_slash + 1;
+            for (int j = 0; j < sub->file_count; j++) {
+                if (k_strcmp(sub->files[j].name, filename) == 0) {
+                    sysfs_handle_t *h = (sysfs_handle_t*)kmalloc(sizeof(sysfs_handle_t));
+                    h->sub = sub;
+                    h->file = &sub->files[j];
+                    h->offset = 0;
+                    return h;
+                }
+            }
+        }
+    }
+
+    return NULL;
+}
+
+static void sysfs_close(void *fs_private, void *handle) {
+    if (handle) kfree(handle);
+}
+
+static int sysfs_read(void *fs_private, void *handle, void *buf, int size) {
+    sysfs_handle_t *h = (sysfs_handle_t*)handle;
+    if (!h || !h->file || !h->file->read) return -1;
+
+    int bytes = h->file->read((char*)buf, size, h->offset);
+    if (bytes > 0) h->offset += bytes;
+    return bytes;
+}
+
+static int sysfs_write(void *fs_private, void *handle, const void *buf, int size) {
+    sysfs_handle_t *h = (sysfs_handle_t*)handle;
+    if (!h || !h->file || !h->file->write) return -1;
+
+    int bytes = h->file->write((const char*)buf, size, h->offset);
+    if (bytes > 0) h->offset += bytes;
+    return bytes;
+}
+
+static int sysfs_readdir(void *fs_private, const char *path, vfs_dirent_t *entries, int max) {
+    if (path[0] == '/') path++;
+    
+    kernel_subsystem_t *exact_sub = subsystem_get_by_name(path);
+    int out = 0;
+
+    if (exact_sub) {
+        for (int i = 0; i < exact_sub->file_count && out < max; i++) {
+            k_strcpy(entries[out].name, exact_sub->files[i].name);
+            entries[out].is_directory = 0;
+            entries[out].size = 0;
+            out++;
+        }
+    }
+
+    int count = subsystem_get_count();
+    int path_len = k_strlen(path);
+
+    for (int i = 0; i < count && out < max; i++) {
+        kernel_subsystem_t *s = subsystem_get_by_index(i);
+        if (path_len == 0 || (k_strlen(s->name) > path_len && k_strncmp(s->name, path, path_len) == 0 && s->name[path_len] == '/')) {
+            const char *sub_path = s->name + (path_len ? path_len + 1 : 0);
+            char comp[64];
+            int j = 0;
+            while (sub_path[j] && sub_path[j] != '/' && j < 63) {
+                comp[j] = sub_path[j];
+                j++;
+            }
+            comp[j] = 0;
+
+            if (comp[0] == '\0') continue;
+
+            bool found = false;
+            for (int k = 0; k < out; k++) {
+                if (k_strcmp(entries[k].name, comp) == 0) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                k_strcpy(entries[out].name, comp);
+                entries[out].is_directory = 1;
+                entries[out].size = 0;
+                out++;
+            }
+        }
+    }
+    return out;
+}
+
+static bool sysfs_exists(void *fs_private, const char *path) {
+    if (path[0] == '/') path++;
+    if (path[0] == '\0') return true;
+
+    if (subsystem_get_by_name(path)) return true;
+
+    // File check
+    int last_slash = -1;
+    for (int j = 0; path[j]; j++) if (path[j] == '/') last_slash = j;
+    if (last_slash != -1) {
+        char prefix[64];
+        k_memcpy(prefix, path, last_slash);
+        prefix[last_slash] = 0;
+        kernel_subsystem_t *sub = subsystem_get_by_name(prefix);
+        if (sub) {
+            const char *filename = path + last_slash + 1;
+            for (int j = 0; j < sub->file_count; j++) {
+                if (k_strcmp(sub->files[j].name, filename) == 0) return true;
+            }
+        }
+    }
+
+    int count = subsystem_get_count();
+    int path_len = k_strlen(path);
+    for (int i = 0; i < count; i++) {
+        kernel_subsystem_t *s = subsystem_get_by_index(i);
+        if (k_strlen(s->name) > path_len && k_strncmp(s->name, path, path_len) == 0 && s->name[path_len] == '/') return true;
+    }
+
+    return false;
+}
+
+static bool sysfs_is_dir(void *fs_private, const char *path) {
+    if (path[0] == '/') path++;
+    if (path[0] == '\0') return true;
+
+    int last_slash = -1;
+    for (int j = 0; path[j]; j++) if (path[j] == '/') last_slash = j;
+    if (last_slash != -1) {
+        char prefix[64];
+        k_memcpy(prefix, path, last_slash);
+        prefix[last_slash] = 0;
+        kernel_subsystem_t *sub = subsystem_get_by_name(prefix);
+        if (sub) {
+            const char *filename = path + last_slash + 1;
+            for (int j = 0; j < sub->file_count; j++) {
+                if (k_strcmp(sub->files[j].name, filename) == 0) return false;
+            }
+        }
+    }
+
+    return sysfs_exists(fs_private, path);
+}
+
+vfs_fs_ops_t sysfs_ops = {
+    .open = sysfs_open,
+    .close = sysfs_close,
+    .read = sysfs_read,
+    .write = sysfs_write,
+    .readdir = sysfs_readdir,
+    .exists = sysfs_exists,
+    .is_dir = sysfs_is_dir
+};
+
+vfs_fs_ops_t* sysfs_get_ops(void) {
+    return &sysfs_ops;
+}

src/fs/sysfs.h

@@ -0,0 +1,8 @@
+#ifndef SYSFS_H
+#define SYSFS_H
+
+#include "vfs.h"
+
+vfs_fs_ops_t* sysfs_get_ops(void);
+
+#endif

src/fs/vfs.c

@@ -0,0 +1,816 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include "vfs.h"
+#include "memory_manager.h"
+#include "spinlock.h"
+#include <stddef.h>
+#include "disk.h"
+#include "process.h"
+
+
+static vfs_mount_t mounts[VFS_MAX_MOUNTS];
+static int mount_count = 0;
+static vfs_file_t open_files[VFS_MAX_OPEN_FILES];
+static spinlock_t vfs_lock = SPINLOCK_INIT;
+
+extern void serial_write(const char *str);
+extern void serial_write_num(uint64_t num);
+
+static int vfs_strlen(const char *s) {
+    int n = 0;
+    while (s[n]) n++;
+    return n;
+}
+
+static void vfs_strcpy(char *d, const char *s) {
+    while ((*d++ = *s++));
+}
+
+static int vfs_strcmp(const char *a, const char *b) {
+    while (*a && *a == *b) { a++; b++; }
+    return (unsigned char)*a - (unsigned char)*b;
+}
+
+static int vfs_strncmp(const char *a, const char *b, int n) {
+    for (int i = 0; i < n; i++) {
+        if (a[i] != b[i]) return (unsigned char)a[i] - (unsigned char)b[i];
+        if (!a[i]) return 0;
+    }
+    return 0;
+}
+
+static bool vfs_starts_with(const char *str, const char *prefix) {
+    while (*prefix) {
+        if (*str++ != *prefix++) return false;
+    }
+    return true;
+}
+
+static bool vfs_path_is_parent(const char *parent, const char *child) {
+    int plen = vfs_strlen(parent);
+    if (vfs_strncmp(parent, child, plen) != 0) return false;
+    if (child[plen] == '\0') return true;
+    if (child[plen] == '/') return true;
+    if (plen == 1 && parent[0] == '/') return true;
+    return false;
+}
+
+void vfs_normalize_path(const char *cwd, const char *path, char *normalized) {
+    char parts[32][64]; // Reduced size to save stack, 64 is enough for most names
+    int depth = 0;
+    int i = 0;
+
+    // Handle relative path by starting with CWD
+    if (path[0] != '/' && cwd) {
+        int ci = 0;
+        if (cwd[0] == '/') ci = 1;
+        while (cwd[ci]) {
+            if (cwd[ci] == '/') { ci++; continue; }
+            int j = 0;
+            while (cwd[ci] && cwd[ci] != '/' && j < 63) {
+                parts[depth][j++] = cwd[ci++];
+            }
+            parts[depth][j] = 0;
+            if (j > 0) depth++;
+            if (depth >= 32) break;
+            if (cwd[ci] == '/') ci++;
+        }
+    }
+
+    if (path[0] == '/') i = 1;
+
+    while (path[i]) {
+        if (path[i] == '/') { i++; continue; }
+
+        int j = 0;
+        while (path[i] && path[i] != '/' && j < 63) {
+            parts[depth][j++] = path[i++];
+        }
+        parts[depth][j] = 0;
+
+        if (parts[depth][0] == '.' && parts[depth][1] == 0) {
+            // "." skip
+        } else if (parts[depth][0] == '.' && parts[depth][1] == '.' && parts[depth][2] == 0) {
+            // ".." pop
+            if (depth > 0) depth--;
+        } else {
+            if (j > 0) {
+                depth++;
+                if (depth >= 32) break;
+            }
+        }
+
+        if (path[i] == '/') i++;
+    }
+
+    normalized[0] = '/';
+    int pos = 1;
+    for (int k = 0; k < depth; k++) {
+        int l = 0;
+        while (parts[k][l] && pos < VFS_MAX_PATH - 2) {
+            normalized[pos++] = parts[k][l++];
+        }
+        if (k < depth - 1) normalized[pos++] = '/';
+    }
+    normalized[pos] = 0;
+
+    if (pos == 1 && normalized[0] == '/') {
+        normalized[1] = 0;
+    }
+}
+
+static vfs_mount_t* vfs_resolve_mount(const char *path, const char **rel_path_out) {
+    vfs_mount_t *best = NULL;
+    int best_len = -1;
+
+    for (int i = 0; i < mount_count; i++) {
+        if (!mounts[i].active) continue;
+
+        int mlen = mounts[i].path_len;
+
+        if (mlen == 1 && mounts[i].path[0] == '/') {
+            if (best_len < 1) {
+                best = &mounts[i];
+                best_len = 1;
+            }
+            continue;
+        }
+
+        if (vfs_strncmp(path, mounts[i].path, mlen) == 0) {
+            if (path[mlen] == '/' || path[mlen] == '\0') {
+                if (mlen > best_len) {
+                    best = &mounts[i];
+                    best_len = mlen;
+                }
+            }
+        }
+    }
+
+    if (best && rel_path_out) {
+        const char *rel = path + best_len;
+        while (*rel == '/') rel++;
+        *rel_path_out = rel;
+    }
+
+    return best;
+}
+
+static vfs_file_t* vfs_alloc_file(void) {
+    for (int i = 0; i < VFS_MAX_OPEN_FILES; i++) {
+        if (!open_files[i].valid) {
+            open_files[i].valid = true;
+            open_files[i].fs_handle = NULL;
+            open_files[i].mount = NULL;
+            open_files[i].position = 0;
+            open_files[i].is_device = false;
+            return &open_files[i];
+        }
+    }
+    return NULL;
+}
+
+static void vfs_free_file(vfs_file_t *f) {
+    if (f) {
+        f->valid = false;
+        f->fs_handle = NULL;
+        f->mount = NULL;
+        f->position = 0;
+        f->is_device = false;
+    }
+}
+
+void vfs_init(void) {
+    for (int i = 0; i < VFS_MAX_MOUNTS; i++) {
+        mounts[i].active = false;
+    }
+    for (int i = 0; i < VFS_MAX_OPEN_FILES; i++) {
+        open_files[i].valid = false;
+    }
+    mount_count = 0;
+
+    serial_write("[VFS] Ready\n");
+}
+
+// ===============
+// Mount / Unmount
+// ===============
+
+bool vfs_mount(const char *mount_path, const char *device, const char *fs_type,
+               vfs_fs_ops_t *ops, void *fs_private) {
+    uint64_t flags = spinlock_acquire_irqsave(&vfs_lock);
+
+    if (mount_count >= VFS_MAX_MOUNTS) {
+        spinlock_release_irqrestore(&vfs_lock, flags);
+        serial_write("[VFS] ERROR: Mount table full\n");
+        return false;
+    }
+
+    for (int i = 0; i < mount_count; i++) {
+        if (mounts[i].active && vfs_strcmp(mounts[i].path, mount_path) == 0) {
+            spinlock_release_irqrestore(&vfs_lock, flags);
+            serial_write("[VFS] ERROR: Mount point already in use: ");
+            serial_write(mount_path);
+            serial_write("\n");
+            return false;
+        }
+    }
+
+    vfs_mount_t *m = &mounts[mount_count];
+    vfs_strcpy(m->path, mount_path);
+    m->path_len = vfs_strlen(mount_path);
+    m->ops = ops;
+    m->fs_private = fs_private;
+    vfs_strcpy(m->device, device ? device : "none");
+    vfs_strcpy(m->fs_type, fs_type ? fs_type : "unknown");
+    m->active = true;
+    mount_count++;
+
+    spinlock_release_irqrestore(&vfs_lock, flags);
+
+    serial_write("[VFS] Mounted ");
+    serial_write(fs_type);
+    serial_write(" (");
+    serial_write(device ? device : "none");
+    serial_write(") at ");
+    serial_write(mount_path);
+    serial_write("\n");
+
+    return true;
+}
+
+bool vfs_umount(const char *mount_path) {
+    uint64_t flags = spinlock_acquire_irqsave(&vfs_lock);
+
+    for (int i = 0; i < mount_count; i++) {
+        if (mounts[i].active && vfs_strcmp(mounts[i].path, mount_path) == 0) {
+            for (int j = 0; j < VFS_MAX_OPEN_FILES; j++) {
+                if (open_files[j].valid && open_files[j].mount == &mounts[i]) {
+                    if (mounts[i].ops->close) {
+                        mounts[i].ops->close(mounts[i].fs_private, open_files[j].fs_handle);
+                    }
+                    vfs_free_file(&open_files[j]);
+                }
+            }
+
+            serial_write("[VFS] Unmounted ");
+            serial_write(mounts[i].path);
+            serial_write("\n");
+
+            mounts[i].active = false;
+
+            // Compact array
+            for (int k = i; k < mount_count - 1; k++) {
+                mounts[k] = mounts[k + 1];
+            }
+            mount_count--;
+
+            spinlock_release_irqrestore(&vfs_lock, flags);
+            return true;
+        }
+    }
+
+    spinlock_release_irqrestore(&vfs_lock, flags);
+    return false;
+}
+
+// ==============
+// File Operations
+// ==============
+
+vfs_file_t* vfs_open(const char *path, const char *mode) {
+    if (!path || !mode) return NULL;
+
+    char normalized[VFS_MAX_PATH];
+    process_t *proc = process_get_current();
+    vfs_normalize_path(proc ? proc->cwd : "/", path, normalized);
+
+    uint64_t flags = spinlock_acquire_irqsave(&vfs_lock);
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+    
+    // Fallback for block devices (/dev/sda etc)
+    if (vfs_starts_with(normalized, "/dev/")) {
+        const char *devname = normalized + 5;
+        Disk *d = disk_get_by_name(devname);
+        if (d && (!mount || mount->path_len == 1)) {
+            vfs_file_t *vf = vfs_alloc_file();
+            if (vf) {
+                vf->mount = &mounts[0];
+                vf->fs_handle = (void*)d; 
+                vf->is_device = true;
+                vf->position = 0;
+                spinlock_release_irqrestore(&vfs_lock, flags);
+                return vf;
+            }
+        }
+    }
+    
+    if (!mount || !mount->ops->open) {
+        spinlock_release_irqrestore(&vfs_lock, flags);
+        return NULL;
+    }
+
+    if (!rel_path || rel_path[0] == '\0') {
+        rel_path = "/";
+    }
+
+    vfs_file_t *vf = vfs_alloc_file();
+    if (!vf) {
+        spinlock_release_irqrestore(&vfs_lock, flags);
+        serial_write("[VFS] ERROR: No free file handles\n");
+        return NULL;
+    }
+
+    vf->mount = mount;
+
+    spinlock_release_irqrestore(&vfs_lock, flags);
+
+    void *fs_handle = mount->ops->open(mount->fs_private, rel_path, mode);
+    if (!fs_handle) {
+        flags = spinlock_acquire_irqsave(&vfs_lock);
+        vfs_free_file(vf);
+        spinlock_release_irqrestore(&vfs_lock, flags);
+        return NULL;
+    }
+
+    vf->fs_handle = fs_handle;
+    return vf;
+}
+
+void vfs_close(vfs_file_t *file) {
+    if (!file || !file->valid) return;
+
+    vfs_mount_t *mount = file->mount;
+    if (mount && mount->ops->close) {
+        mount->ops->close(mount->fs_private, file->fs_handle);
+    }
+
+    uint64_t flags = spinlock_acquire_irqsave(&vfs_lock);
+    vfs_free_file(file);
+    spinlock_release_irqrestore(&vfs_lock, flags);
+}
+
+int vfs_read(vfs_file_t *file, void *buf, int size) {
+    if (!file || !file->valid || !file->mount) return -1;
+    
+    if (file->is_device) {
+        Disk *d = (Disk*)file->fs_handle;
+        if (!d) return -1;
+        
+        uint32_t total_read = 0;
+        uint32_t sector = (uint32_t)(file->position / 512);
+        uint32_t offset = (uint32_t)(file->position % 512);
+        uint8_t sector_buf[512];
+        
+        while (total_read < (uint32_t)size) {
+            if (sector >= d->total_sectors) break;
+            if (d->read_sector(d, sector, sector_buf) != 0) break;
+            
+            uint32_t to_copy = 512 - offset;
+            if (to_copy > (uint32_t)size - total_read) to_copy = (uint32_t)size - total_read;
+            
+            extern void mem_memcpy(void *dest, const void *src, size_t len);
+            mem_memcpy((uint8_t*)buf + total_read, sector_buf + offset, to_copy);
+            
+            total_read += to_copy;
+            file->position += to_copy;
+            sector++;
+            offset = 0;
+        }
+        return (int)total_read;
+    }
+
+    if (!file->mount->ops->read) return -1;
+    int ret = file->mount->ops->read(file->mount->fs_private, file->fs_handle, buf, size);
+    if (ret > 0) file->position += ret;
+    return ret;
+}
+
+int vfs_write(vfs_file_t *file, const void *buf, int size) {
+    if (!file || !file->valid || !file->mount) return -1;
+    if (!file->mount->ops->write) return -1;
+
+    return file->mount->ops->write(file->mount->fs_private, file->fs_handle, buf, size);
+}
+
+int vfs_seek(vfs_file_t *file, int offset, int whence) {
+    if (!file || !file->valid || !file->mount) return -1;
+    
+    if (file->is_device) {
+        Disk *d = (Disk*)file->fs_handle;
+        if (!d) return -1;
+        uint64_t new_pos = file->position;
+        if (whence == 0) new_pos = (uint64_t)offset; // SET
+        else if (whence == 1) new_pos += (uint64_t)offset; // CUR
+        else if (whence == 2) new_pos = (uint64_t)(d->total_sectors * 512 + offset); // END
+        
+        if (new_pos > (uint64_t)d->total_sectors * 512) new_pos = (uint64_t)d->total_sectors * 512;
+        file->position = new_pos;
+        return 0;
+    }
+
+    if (!file->mount->ops->seek) return -1;
+    int ret = file->mount->ops->seek(file->mount->fs_private, file->fs_handle, offset, whence);
+    if (ret == 0) {
+        // Sync position back from driver if possible
+        if (file->mount->ops->get_position) {
+            file->position = file->mount->ops->get_position(file->fs_handle);
+        } else {
+            // Manual sync if driver doesn't support get_position but seek succeeded
+            if (whence == 0) file->position = offset;
+            else if (whence == 1) file->position += offset;
+        }
+    }
+    return ret;
+}
+
+uint32_t vfs_file_position(vfs_file_t *file) {
+    if (!file || !file->valid || !file->mount) return 0;
+    if (file->is_device) return (uint32_t)file->position;
+    if (!file->mount->ops->get_position) return 0;
+    return file->mount->ops->get_position(file->fs_handle);
+}
+
+uint32_t vfs_file_size(vfs_file_t *file) {
+    if (!file || !file->valid || !file->mount) return 0;
+    if (file->is_device) {
+        Disk *d = (Disk*)file->fs_handle;
+        return d ? d->total_sectors * 512 : 0;
+    }
+    if (!file->mount->ops->get_size) return 0;
+    return file->mount->ops->get_size(file->fs_handle);
+}
+
+
+
+int vfs_list_directory(const char *path, vfs_dirent_t *entries, int max) {
+    if (!path || !entries) return -1;
+    
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+    
+    int count = 0;
+    if (mount && mount->ops->readdir) {
+        if (!rel_path || rel_path[0] == '\0') rel_path = "/";
+        count = mount->ops->readdir(mount->fs_private, rel_path, entries, max);
+        if (count < 0) count = 0; 
+    }
+
+    uint64_t v_flags = spinlock_acquire_irqsave(&vfs_lock);
+    for (int i = 0; i < mount_count; i++) {
+        if (!mounts[i].active) continue;
+        if (vfs_strcmp(mounts[i].path, normalized) == 0) continue; 
+
+        if (vfs_path_is_parent(normalized, mounts[i].path)) {
+            const char *sub = mounts[i].path + vfs_strlen(normalized);
+            if (*sub == '/') sub++; 
+
+            if (*sub != '\0') {
+                char comp[VFS_MAX_NAME];
+                int j = 0;
+                while (sub[j] && sub[j] != '/' && j < VFS_MAX_NAME - 1) {
+                    comp[j] = sub[j];
+                    j++;
+                }
+                comp[j] = 0;
+
+                bool found = false;
+                for (int k = 0; k < count; k++) {
+                    if (vfs_strcmp(entries[k].name, comp) == 0) {
+                        found = true;
+                        break;
+                    }
+                }
+
+                if (!found && count < max) {
+                    vfs_strcpy(entries[count].name, comp);
+                    entries[count].is_directory = 1;
+                    entries[count].size = 0;
+                    entries[count].start_cluster = 0;
+                    count++;
+                }
+            }
+        }
+    }
+    spinlock_release_irqrestore(&vfs_lock, v_flags);
+
+    // Special case: Ensure "dev", "sys", "proc" are visible in "/"
+    if (vfs_strcmp(normalized, "/") == 0) {
+        const char *virtual_dirs[] = {"dev", "sys", "proc"};
+        for (int v = 0; v < 3; v++) {
+            bool found = false;
+            for (int i = 0; i < count; i++) {
+                if (vfs_strcmp(entries[i].name, virtual_dirs[v]) == 0) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found && count < max) {
+                vfs_strcpy(entries[count].name, virtual_dirs[v]);
+                entries[count].is_directory = 1;
+                entries[count].size = 0;
+                entries[count].start_cluster = 0;
+                count++;
+            }
+        }
+    }
+
+    // Special case: /dev listing for block devices
+    if (vfs_strcmp(normalized, "/dev") == 0) {
+        int dcount = disk_get_count();
+        for (int i = 0; i < dcount && count < max; i++) {
+            Disk *d = disk_get_by_index(i);
+            if (d) {
+                bool found = false;
+                for (int k = 0; k < count; k++) {
+                    if (vfs_strcmp(entries[k].name, d->devname) == 0) {
+                        found = true;
+                        break;
+                    }
+                }
+                if (!found) {
+                    vfs_strcpy(entries[count].name, d->devname);
+                    entries[count].size = d->total_sectors * 512;
+                    entries[count].is_directory = 0;
+                    entries[count].start_cluster = 0;
+                    entries[count].write_date = 0;
+                    entries[count].write_time = 0;
+                    count++;
+                }
+            }
+        }
+    }
+
+    return count;
+}
+
+bool vfs_mkdir(const char *path) {
+    if (!path) return false;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+
+    if (vfs_starts_with(normalized, "/dev/")) {
+        if (!mount || !rel_path || rel_path[0] == '\0') {
+            return false; 
+        }
+    }
+
+    if (!mount || !mount->ops->mkdir) return false;
+    return mount->ops->mkdir(mount->fs_private, rel_path);
+}
+
+bool vfs_rmdir(const char *path) {
+    if (!path) return false;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    if (normalized[0] == '/' && normalized[1] == '\0') return false;
+    if (vfs_strcmp(normalized, "/dev") == 0) return false;
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+
+    if (vfs_starts_with(normalized, "/dev/")) {
+        if (!mount || !rel_path || rel_path[0] == '\0') {
+            return false; 
+        }
+    }
+
+    if (!mount || !mount->ops->rmdir) return false;
+    return mount->ops->rmdir(mount->fs_private, rel_path);
+}
+
+bool vfs_delete(const char *path) {
+    if (!path) return false;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    if (normalized[0] == '/' && normalized[1] == '\0') return false;
+    if (vfs_strcmp(normalized, "/dev") == 0) return false;
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+
+    if (vfs_starts_with(normalized, "/dev/")) {
+        if (!mount || !rel_path || rel_path[0] == '\0') {
+            return false; 
+        }
+    }
+
+    if (!mount || !mount->ops->unlink) return false;
+    return mount->ops->unlink(mount->fs_private, rel_path);
+}
+
+bool vfs_rename(const char *old_path, const char *new_path) {
+    if (!old_path || !new_path) return false;
+
+    char norm_old[VFS_MAX_PATH], norm_new[VFS_MAX_PATH];
+    vfs_normalize_path("/", old_path, norm_old);
+    vfs_normalize_path("/", new_path, norm_new);
+
+    const char *rel_old = NULL, *rel_new = NULL;
+    vfs_mount_t *mount_old = vfs_resolve_mount(norm_old, &rel_old);
+    vfs_mount_t *mount_new = vfs_resolve_mount(norm_new, &rel_new);
+
+    if (!mount_old || mount_old != mount_new) return false;
+    if (!mount_old->ops->rename) return false;
+
+    if (!rel_old || rel_old[0] == '\0') return false;
+    if (!rel_new || rel_new[0] == '\0') return false;
+
+    return mount_old->ops->rename(mount_old->fs_private, rel_old, rel_new);
+}
+
+bool vfs_exists(const char *path) {
+    if (!path) return false;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    if (normalized[0] == '/' && normalized[1] == '\0') return true;
+
+    uint64_t flags_vfs = spinlock_acquire_irqsave(&vfs_lock);
+    for (int i = 0; i < mount_count; i++) {
+        if (mounts[i].active && vfs_starts_with(mounts[i].path, normalized)) {
+            spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+            return true;
+        }
+    }
+    spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+
+    if (vfs_strcmp(normalized, "/dev") == 0 || 
+        vfs_strcmp(normalized, "/sys") == 0 || 
+        vfs_strcmp(normalized, "/proc") == 0) return true;
+
+    if (vfs_starts_with(normalized, "/dev/")) {
+        const char *dev = normalized + 5;
+        if (disk_get_by_name(dev)) return true;
+    }
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+    if (!mount || !mount->ops->exists) return false;
+
+    if (!rel_path || rel_path[0] == '\0') return true; 
+
+    return mount->ops->exists(mount->fs_private, rel_path);
+}
+
+bool vfs_is_directory(const char *path) {
+    if (!path) return false;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    if (normalized[0] == '/' && normalized[1] == '\0') return true;
+
+    uint64_t flags_vfs = spinlock_acquire_irqsave(&vfs_lock);
+    for (int i = 0; i < mount_count; i++) {
+        if (mounts[i].active && vfs_path_is_parent(normalized, mounts[i].path)) {
+            if (vfs_strcmp(mounts[i].path, normalized) == 0) {
+                spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+                return true;
+            }
+            // If normalized is a parent of a mount, it's a virtual directory
+            spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+            return true;
+        }
+    }
+    spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+
+    if (vfs_strcmp(normalized, "/dev") == 0 || 
+        vfs_strcmp(normalized, "/sys") == 0 || 
+        vfs_strcmp(normalized, "/proc") == 0) return true;
+
+    if (vfs_starts_with(normalized, "/dev/")) {
+        const char *dev = normalized + 5;
+        Disk *d = disk_get_by_name(dev);
+        if (d) return false;
+    }
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+    if (!mount) return false;
+
+    if (!rel_path || rel_path[0] == '\0') return true;
+
+    if (!mount->ops->is_dir) return false;
+    return mount->ops->is_dir(mount->fs_private, rel_path);
+}
+
+int vfs_get_info(const char *path, vfs_dirent_t *info) {
+    if (!path || !info) return -1;
+
+    char normalized[VFS_MAX_PATH];
+    vfs_normalize_path("/", path, normalized);
+
+    if (normalized[0] == '/' && normalized[1] == '\0') {
+        vfs_strcpy(info->name, "/");
+        info->size = 0;
+        info->is_directory = 1;
+        info->start_cluster = 0;
+        info->write_date = 0;
+        info->write_time = 0;
+        return 0;
+    }
+
+    if (vfs_strcmp(normalized, "/dev") == 0 || 
+        vfs_strcmp(normalized, "/sys") == 0 || 
+        vfs_strcmp(normalized, "/proc") == 0) {
+        const char *name = normalized + 1;
+        vfs_strcpy(info->name, name);
+        info->size = 0;
+        info->is_directory = 1;
+        info->start_cluster = 0;
+        info->write_date = 0;
+        info->write_time = 0;
+        return 0;
+    }
+
+    uint64_t flags_vfs = spinlock_acquire_irqsave(&vfs_lock);
+    for (int i = 0; i < mount_count; i++) {
+        if (mounts[i].active && vfs_path_is_parent(normalized, mounts[i].path)) {
+            if (vfs_strcmp(mounts[i].path, normalized) != 0) {
+                const char *p = normalized + vfs_strlen(normalized);
+                while (p > normalized && *(p-1) != '/') p--;
+                vfs_strcpy(info->name, p);
+                info->size = 0;
+                info->is_directory = 1;
+                info->start_cluster = 0;
+                info->write_date = 0;
+                info->write_time = 0;
+                spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+                return 0;
+            }
+        }
+    }
+    spinlock_release_irqrestore(&vfs_lock, flags_vfs);
+
+    // Device check
+    if (vfs_starts_with(normalized, "/dev/")) {
+        const char *dev = normalized + 5;
+        Disk *d = disk_get_by_name(dev);
+        if (d) {
+            vfs_strcpy(info->name, d->devname);
+            info->size = d->total_sectors * 512;
+            info->is_directory = 0;
+            info->start_cluster = 0;
+            info->write_date = 0;
+            info->write_time = 0;
+            return 0;
+        }
+    }
+
+    const char *rel_path = NULL;
+    vfs_mount_t *mount = vfs_resolve_mount(normalized, &rel_path);
+    if (!mount || !mount->ops->get_info) return -1;
+
+    if (!rel_path || rel_path[0] == '\0') {
+        // Info about mount root
+        vfs_strcpy(info->name, mount->device);
+        info->size = 0;
+        info->is_directory = 1;
+        info->start_cluster = 0;
+        info->write_date = 0;
+        info->write_time = 0;
+        return 0;
+    }
+
+    return mount->ops->get_info(mount->fs_private, rel_path, info);
+}
+
+int vfs_get_mount_count(void) {
+    return mount_count;
+}
+
+vfs_mount_t* vfs_get_mount(int index) {
+    if (index < 0 || index >= mount_count) return NULL;
+    if (!mounts[index].active) return NULL;
+    return &mounts[index];
+}
+
+void vfs_automount_partition(const char *devname) {
+    char mount_path[64] = "/mnt/";
+    int i = 5;
+    const char *d = devname;
+    while (*d && i < 62) mount_path[i++] = *d++;
+    mount_path[i] = 0;
+
+    serial_write("[VFS] Auto-mount requested for ");
+    serial_write(devname);
+    serial_write(" at ");
+    serial_write(mount_path);
+    serial_write("\n");
+}

src/fs/vfs.h

@@ -0,0 +1,117 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#ifndef VFS_H
+#define VFS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#define VFS_MAX_PATH 1024
+#define VFS_MAX_NAME 256
+#define VFS_MAX_MOUNTS 16
+#define VFS_MAX_OPEN_FILES 64
+
+// Forward declarations
+typedef struct vfs_mount vfs_mount_t;
+typedef struct vfs_file vfs_file_t;
+
+// Directory entry for readdir
+typedef struct vfs_dirent {
+    char name[VFS_MAX_NAME];
+    uint32_t size;
+    uint8_t is_directory;
+    uint32_t start_cluster;
+    uint16_t write_date;
+    uint16_t write_time;
+} vfs_dirent_t;
+
+// Filesystem operations — implemented by each filesystem type
+typedef struct vfs_fs_ops {
+    // File operations — return opaque FS handle
+    void* (*open)(void *fs_private, const char *rel_path, const char *mode);
+    void  (*close)(void *fs_private, void *file_handle);
+    int   (*read)(void *fs_private, void *file_handle, void *buf, int size);
+    int   (*write)(void *fs_private, void *file_handle, const void *buf, int size);
+    int   (*seek)(void *fs_private, void *file_handle, int offset, int whence);
+
+    // Directory operations
+    int   (*readdir)(void *fs_private, const char *rel_path, vfs_dirent_t *entries, int max);
+    bool  (*mkdir)(void *fs_private, const char *rel_path);
+    bool  (*rmdir)(void *fs_private, const char *rel_path);
+    bool  (*unlink)(void *fs_private, const char *rel_path);
+    bool  (*rename)(void *fs_private, const char *old_path, const char *new_path);
+
+    // Query operations
+    bool  (*exists)(void *fs_private, const char *rel_path);
+    bool  (*is_dir)(void *fs_private, const char *rel_path);
+    int   (*get_info)(void *fs_private, const char *rel_path, vfs_dirent_t *info);
+
+    // Handle info (for backward compat with syscall position/size queries)
+    uint32_t (*get_position)(void *file_handle);
+    uint32_t (*get_size)(void *file_handle);
+} vfs_fs_ops_t;
+
+// VFS file handle
+struct vfs_file {
+    void *fs_handle;        // FS-specific handle (e.g. FAT32_FileHandle*)
+    vfs_mount_t *mount;     // Mount this file belongs to
+    bool valid;
+    uint64_t position;      // Current Seek Position (for raw devices/fallbacks)
+    bool is_device;         // Is this a raw device handle?
+};
+
+// Mount entry
+struct vfs_mount {
+    char path[256];         // Mount point (e.g. "/", "/mnt/sda1")
+    int path_len;
+    vfs_fs_ops_t *ops;
+    void *fs_private;       // FS-specific data (e.g. FAT32_Volume*)
+    char device[32];        // Device name (e.g. "ramfs", "sda1")
+    char fs_type[16];       // "ramfs", "fat32"
+    bool active;
+};
+
+// Initialization
+void vfs_init(void);
+
+// Mount/unmount
+bool vfs_mount(const char *mount_path, const char *device, const char *fs_type,
+               vfs_fs_ops_t *ops, void *fs_private);
+bool vfs_umount(const char *mount_path);
+
+// File operations
+vfs_file_t* vfs_open(const char *path, const char *mode);
+void vfs_close(vfs_file_t *file);
+int vfs_read(vfs_file_t *file, void *buf, int size);
+int vfs_write(vfs_file_t *file, const void *buf, int size);
+int vfs_seek(vfs_file_t *file, int offset, int whence);
+
+// Directory operations
+int vfs_list_directory(const char *path, vfs_dirent_t *entries, int max);
+bool vfs_mkdir(const char *path);
+bool vfs_rmdir(const char *path);
+bool vfs_delete(const char *path);
+bool vfs_rename(const char *old_path, const char *new_path);
+
+// Query operations
+bool vfs_exists(const char *path);
+bool vfs_is_directory(const char *path);
+int vfs_get_info(const char *path, vfs_dirent_t *info);
+
+// Mount enumeration
+int vfs_get_mount_count(void);
+vfs_mount_t* vfs_get_mount(int index);
+
+// Block device auto-mount
+void vfs_automount_partition(const char *devname);
+
+// Path utilities
+void vfs_normalize_path(const char *cwd, const char *path, char *normalized);
+
+// Backward compat: get position/size from vfs_file
+uint32_t vfs_file_position(vfs_file_t *file);
+uint32_t vfs_file_size(vfs_file_t *file);
+
+#endif

src/library/bsh/boot.bsh

@@ -0,0 +1,4 @@
+# BoredShell boot script
+# Runs once on boot for the first shell.
+# Example:
+# echo "Boot script executed"

src/library/bsh/bshrc

@@ -0,0 +1,35 @@
+# BoredShell rc file
+# Location: /Library/bsh/bshrc
+#
+# Format (initial): key=value
+# Lines starting with # are comments.
+#
+# PATH controls command lookup order (colon-separated).
+PATH=/bin:/root/Apps
+
+# Scripts to run automatically.
+# STARTUP runs for interactive shells.
+# BOOT_SCRIPT runs once on boot (if enabled by the shell).
+STARTUP=/Library/bsh/startup.bsh
+BOOT_SCRIPT=/Library/bsh/boot.bsh
+
+# Prompt templates.
+# Tokens:
+#   %n = username
+#   %h = hostname
+#   %~ = cwd ("~" for /root)
+#   %T = time (HH:MM)
+PROMPT_LEFT=%n@%h:%~$ 
+PROMPT_RIGHT=%T
+
+# History settings.
+HISTORY_FILE=/Library/bsh/history
+HISTORY_SIZE=200
+
+# Feature toggles.
+GLOB=true
+COMPLETE=true
+SUGGEST=true
+
+# Example aliases (future support).
+# alias ll=ls -la

src/library/bsh/startup.bsh

@@ -0,0 +1,5 @@
+# BoredShell startup script
+# Runs for interactive shells.
+# Example:
+# echo "Welcome to BoredShell"
+sysfetch

src/mem/memory_manager.c

@@ -479,7 +479,7 @@ void memory_validate(void) {
     }
     
     if (errors == 0) {
-        cmd_write("Memory validation: OK\n");
+        cmd_write("Memory validation: [OK]\n");
     } else {
         cmd_write("Memory validation failed with ");
         cmd_write_int(errors);

src/net/lwip/core/tcp.c

@@ -1133,7 +1133,6 @@ tcp_connect(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port,
               (cpcb->remote_port == port) &&
               ip_addr_cmp(&cpcb->local_ip, &pcb->local_ip) &&
               ip_addr_cmp(&cpcb->remote_ip, ipaddr)) {
-            /* linux returns EISCONN here, but ERR_USE should be OK for us */
             return ERR_USE;
           }
         }

src/net/network.c

@@ -88,7 +88,7 @@ int network_init(void) {
         ipv4_address_t ip;
         network_get_ipv4_address(&ip);
         extern void serial_write(const char *str);
-        serial_write("[NETWORK] IP Assigned: ");
+        serial_write("[NET] IP Assigned: ");
         char buf[32];
         k_itoa(ip.bytes[0], buf); serial_write(buf); serial_write(".");
         k_itoa(ip.bytes[1], buf); serial_write(buf); serial_write(".");
@@ -96,7 +96,7 @@ int network_init(void) {
         k_itoa(ip.bytes[3], buf); serial_write(buf); serial_write("\n");
     } else {
         extern void serial_write(const char *str);
-        serial_write("[NETWORK] DHCP Failed during init\n");
+        serial_write("[NET] DHCP Failed during init\n");
     }
 
     // Set default DNS server (1.1.1.1)

src/sys/bootfs_state.h

@@ -0,0 +1,24 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+#ifndef BOOTFS_STATE_H
+#define BOOTFS_STATE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct {
+    char bootloader_name[64];
+    char bootloader_version[64];
+    uint64_t boot_time_ms;
+    uint8_t boot_flags;
+    char limine_conf[2048];
+    int limine_conf_len;
+    uint32_t num_modules;
+    uint32_t kernel_size;
+    uint32_t initrd_size;
+    
+} bootfs_state_t;
+extern bootfs_state_t g_bootfs_state;
+void bootfs_state_init(void);
+
+#endif

src/sys/cmd.h

@@ -4,15 +4,15 @@
 #ifndef CMD_H
 #define CMD_H
 
-#include "wm.h"
-
-extern Window win_cmd;
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 
 void cmd_init(void);
 void cmd_reset(void);
 
-// IO Functions
 void cmd_write(const char *str);
+void cmd_write_len(const char *str, size_t len);
 void cmd_putchar(char c);
 void cmd_write_int(int n);
 void cmd_write_hex(uint64_t n);
@@ -22,10 +22,9 @@ void cmd_screen_clear(void);
 void cmd_increment_msg_count(void);
 void cmd_reset_msg_count(void);
 
-void cmd_handle_resize(Window *win, int w, int h);
-void cmd_handle_click(Window *win, int x, int y);
-
 uint32_t cmd_get_config_value(const char *key);
 void cmd_set_current_color(uint32_t color);
+void cmd_set_raw_mode(bool enabled);
+void cmd_process_finished(void);
 
 #endif

src/sys/cmd_stub.c

@@ -0,0 +1,76 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include "cmd.h"
+#include "core/kutils.h"
+
+extern void serial_write(const char *str);
+
+static void serial_write_char(char c) {
+    char buf[2] = { c, 0 };
+    serial_write(buf);
+}
+
+void cmd_init(void) {
+}
+
+void cmd_reset(void) {
+}
+
+void cmd_write(const char *str) {
+    if (!str) return;
+    serial_write(str);
+}
+
+void cmd_write_len(const char *str, size_t len) {
+    if (!str || len == 0) return;
+    for (size_t i = 0; i < len; i++) {
+        serial_write_char(str[i]);
+    }
+}
+
+void cmd_putchar(char c) {
+    serial_write_char(c);
+}
+
+void cmd_write_int(int n) {
+    char buf[32];
+    k_itoa(n, buf);
+    cmd_write(buf);
+}
+
+void cmd_write_hex(uint64_t n) {
+    char buf[17];
+    k_itoa_hex(n, buf);
+    cmd_write("0x");
+    cmd_write(buf);
+}
+
+int cmd_get_cursor_col(void) {
+    return 0;
+}
+
+void cmd_screen_clear(void) {
+}
+
+void cmd_increment_msg_count(void) {
+}
+
+void cmd_reset_msg_count(void) {
+}
+
+uint32_t cmd_get_config_value(const char *key) {
+    (void)key;
+    return 0;
+}
+
+void cmd_set_current_color(uint32_t color) {
+    (void)color;
+}
+
+void cmd_set_raw_mode(bool enabled) {
+    (void)enabled;
+}
+
+void cmd_process_finished(void) {
+}

src/sys/file_index.c

@@ -0,0 +1,477 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include "file_index.h"
+#include "vfs.h"
+#include "memory_manager.h"
+#include "spinlock.h"
+#include <stddef.h>
+
+static file_index_t g_file_index = {0};
+static spinlock_t g_index_lock = SPINLOCK_INIT;
+static bool g_index_valid = false;
+
+static int str_len(const char *s) {
+    int n = 0;
+    while (s[n]) n++;
+    return n;
+}
+
+static void str_copy(char *d, const char *s) {
+    while ((*d++ = *s++));
+}
+
+static int str_cmp(const char *a, const char *b) {
+    while (*a && *a == *b) { a++; b++; }
+    return (unsigned char)*a - (unsigned char)*b;
+}
+
+static void str_cat(char *d, const char *s) {
+    while (*d) d++;
+    str_copy(d, s);
+}
+
+static bool str_starts_with(const char *str, const char *prefix) {
+    while (*prefix) {
+        if (*str++ != *prefix++) return false;
+    }
+    return true;
+}
+
+static int fuzzy_match_score(const char *query, const char *filename) {
+    if (!query || !filename) return 0;
+    
+    int score = 0;
+    int query_idx = 0;
+    int consecutive = 0;
+    
+    for (int i = 0; filename[i] && query_idx < 256; i++) {
+        char fc = filename[i];
+        char qc = query[query_idx];
+        
+        if (fc >= 'A' && fc <= 'Z') fc += 32;
+        if (qc >= 'A' && qc <= 'Z') qc += 32;
+        
+        if (fc == qc) {
+            score += 10;
+            consecutive++;
+            if (consecutive > 1) score += 5;  
+            query_idx++;
+        } else {
+            consecutive = 0;
+        }
+    }
+    
+    if (query_idx < str_len(query)) {
+        return 0;
+    }
+    
+    if (str_starts_with(filename, query)) {
+        score += 20;
+    }
+    
+    return score;
+}
+
+static void index_walk_directory(const char *path, int depth) {
+    if (depth > 16 || g_file_index.count >= FILE_INDEX_MAX_ENTRIES) {
+        return;  
+    }
+    
+    if (str_starts_with(path, "/proc") || 
+        str_starts_with(path, "/sys") ||
+        str_starts_with(path, "/dev")) {
+        return;
+    }
+    
+    vfs_dirent_t *entries = (vfs_dirent_t *)kmalloc(sizeof(vfs_dirent_t) * 1024);
+    if (!entries) {
+        return; 
+    }
+    
+    int count = vfs_list_directory(path, entries, 1024);
+    
+    if (count <= 0 || count > 1024) {
+        kfree(entries);
+        return;
+    }
+    
+    for (int i = 0; i < count; i++) {
+        if (g_file_index.count >= FILE_INDEX_MAX_ENTRIES) {
+            break;
+        }
+        
+        vfs_dirent_t *entry = &entries[i];
+        if (!entry) continue;
+        
+        
+        if (!entry->name || entry->name[0] == 0) {
+            continue;
+        }
+        
+        
+        if (str_cmp(entry->name, ".color") == 0 || 
+            str_cmp(entry->name, ".origin") == 0 ||
+            str_cmp(entry->name, ".") == 0 ||
+            str_cmp(entry->name, "..") == 0) {
+            continue;
+        }
+        
+        char full_path[FILE_INDEX_MAX_PATH];
+        int path_len = 0;
+        
+        
+        for (int j = 0; path[j] && path_len < FILE_INDEX_MAX_PATH - 1; j++) {
+            full_path[path_len++] = path[j];
+        }
+        
+        
+        if (path_len > 0 && full_path[path_len - 1] != '/' && path_len < FILE_INDEX_MAX_PATH - 1) {
+            full_path[path_len++] = '/';
+        }
+        
+        
+        for (int j = 0; entry->name[j] && path_len < FILE_INDEX_MAX_PATH - 1; j++) {
+            full_path[path_len++] = entry->name[j];
+        }
+        full_path[path_len] = 0;
+        
+        
+        if (path_len >= FILE_INDEX_MAX_PATH - 1) {
+            continue;
+        }
+        
+        
+        file_index_entry_t *idx_entry = &g_file_index.entries[g_file_index.count];
+        str_copy(idx_entry->path, full_path);
+        idx_entry->size = entry->size;
+        idx_entry->mod_time_low = entry->write_date;
+        idx_entry->mod_time_high = entry->write_time;
+        idx_entry->is_directory = entry->is_directory;
+        
+        g_file_index.count++;
+        
+        
+        if (entry->is_directory && !str_starts_with(full_path, "/proc") && 
+            !str_starts_with(full_path, "/sys") && !str_starts_with(full_path, "/dev")) {
+            index_walk_directory(full_path, depth + 1);
+        }
+    }
+    
+    
+    kfree(entries);
+}
+
+
+void file_index_init(void) {
+    g_file_index.count = 0;
+    g_file_index.capacity = FILE_INDEX_MAX_ENTRIES;
+    g_index_valid = false;
+}
+
+
+bool file_index_build(void) {
+    
+    
+    
+    
+    g_file_index.count = 0;
+    
+    
+    const char *safe_paths[] = {"/root", "/bin", "/Library", "/docs", NULL};
+    
+    
+    for (int p = 0; safe_paths[p] != NULL && g_file_index.count < FILE_INDEX_MAX_ENTRIES; p++) {
+        index_walk_directory(safe_paths[p], 0);
+    }
+    
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    g_index_valid = true;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    
+    
+    file_index_save();
+    
+    return true;
+}
+
+
+bool file_index_load(void) {
+    vfs_file_t *file = vfs_open(FILE_INDEX_CACHE_PATH, "r");
+    if (!file) {
+        return false;  
+    }
+    
+    
+    uint32_t version = 0;
+    if (vfs_read(file, &version, sizeof(version)) != sizeof(version)) {
+        vfs_close(file);
+        return false;
+    }
+    
+    
+    if (version != FILE_INDEX_VERSION) {
+        vfs_close(file);
+        return false;
+    }
+    
+    
+    int count = 0;
+    if (vfs_read(file, &count, sizeof(count)) != sizeof(count)) {
+        vfs_close(file);
+        return false;
+    }
+    
+    
+    if (count < 0 || count > FILE_INDEX_MAX_ENTRIES) {
+        vfs_close(file);
+        return false;
+    }
+    
+    
+    file_index_entry_t temp_entries[FILE_INDEX_MAX_ENTRIES];
+    for (int i = 0; i < count; i++) {
+        file_index_entry_t *entry = &temp_entries[i];
+        
+        int bytes_read = vfs_read(file, entry->path, FILE_INDEX_MAX_PATH);
+        if (bytes_read != FILE_INDEX_MAX_PATH) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_read(file, &entry->size, sizeof(entry->size)) != sizeof(entry->size)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_read(file, &entry->mod_time_low, sizeof(entry->mod_time_low)) != sizeof(entry->mod_time_low)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_read(file, &entry->mod_time_high, sizeof(entry->mod_time_high)) != sizeof(entry->mod_time_high)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_read(file, &entry->is_directory, sizeof(entry->is_directory)) != sizeof(entry->is_directory)) {
+            vfs_close(file);
+            return false;
+        }
+    }
+    
+    vfs_close(file);
+    
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    g_file_index.count = 0;
+    for (int i = 0; i < count; i++) {
+        g_file_index.entries[i] = temp_entries[i];
+        g_file_index.count++;
+    }
+    g_index_valid = true;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    
+    return true;
+}
+
+bool file_index_save(void) {
+    if (!vfs_mkdir("/Library")) {
+    }
+    if (!vfs_mkdir("/Library/Index")) {
+    }
+    
+    vfs_file_t *file = vfs_open(FILE_INDEX_CACHE_PATH, "w");
+    if (!file) {
+        return false;
+    }
+    
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    int count = g_file_index.count;
+    file_index_entry_t entries[FILE_INDEX_MAX_ENTRIES];
+    for (int i = 0; i < count; i++) {
+        entries[i] = g_file_index.entries[i];
+    }
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    
+    
+    uint32_t version = FILE_INDEX_VERSION;
+    if (vfs_write(file, &version, sizeof(version)) != sizeof(version)) {
+        vfs_close(file);
+        return false;
+    }
+    
+    if (vfs_write(file, &count, sizeof(count)) != sizeof(count)) {
+        vfs_close(file);
+        return false;
+    }
+    
+    for (int i = 0; i < count; i++) {
+        file_index_entry_t *entry = &entries[i];
+        
+        if (vfs_write(file, entry->path, FILE_INDEX_MAX_PATH) != FILE_INDEX_MAX_PATH) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_write(file, &entry->size, sizeof(entry->size)) != sizeof(entry->size)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_write(file, &entry->mod_time_low, sizeof(entry->mod_time_low)) != sizeof(entry->mod_time_low)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_write(file, &entry->mod_time_high, sizeof(entry->mod_time_high)) != sizeof(entry->mod_time_high)) {
+            vfs_close(file);
+            return false;
+        }
+        
+        if (vfs_write(file, &entry->is_directory, sizeof(entry->is_directory)) != sizeof(entry->is_directory)) {
+            vfs_close(file);
+            return false;
+        }
+    }
+    
+    vfs_close(file);
+    return true;
+}
+
+int file_index_find_fuzzy(const char *query, file_index_result_t *results, int max_results) {
+    if (!query || !results || max_results <= 0) {
+        return 0;
+    }
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    
+    int result_count = 0;
+    
+    for (int i = 0; i < g_file_index.count && result_count < max_results; i++) {
+        if (i < 0 || i >= FILE_INDEX_MAX_ENTRIES) {
+            break;
+        }
+        
+        const char *path = g_file_index.entries[i].path;
+        if (!path || path[0] == 0) {
+            continue;
+        }
+        
+        const char *filename = path;
+        
+        for (int j = 0; path[j]; j++) {
+            if (path[j] == '/') {
+                filename = &path[j + 1];
+            }
+        }
+        
+        if (!filename || filename[0] == 0) {
+            continue;
+        }
+        
+        int score = fuzzy_match_score(query, filename);
+        
+        if (score > 0) {
+            results[result_count].entry = g_file_index.entries[i];
+            results[result_count].match_score = score;
+            result_count++;
+        }
+    }
+    
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    
+    for (int i = 0; i < result_count; i++) {
+        for (int j = i + 1; j < result_count; j++) {
+            if (results[j].match_score > results[i].match_score) {
+                file_index_result_t tmp = results[i];
+                results[i] = results[j];
+                results[j] = tmp;
+            }
+        }
+    }
+    
+    return result_count;
+}
+
+bool file_index_add_entry(const char *path, uint32_t size, uint32_t mod_time_low, 
+                         uint32_t mod_time_high, bool is_dir) {
+    if (!path || g_file_index.count >= FILE_INDEX_MAX_ENTRIES) {
+        return false;
+    }
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    
+    for (int i = 0; i < g_file_index.count; i++) {
+        if (str_cmp(g_file_index.entries[i].path, path) == 0) {
+            g_file_index.entries[i].size = size;
+            g_file_index.entries[i].mod_time_low = mod_time_low;
+            g_file_index.entries[i].mod_time_high = mod_time_high;
+            spinlock_release_irqrestore(&g_index_lock, flags);
+            return true;
+        }
+    }
+    
+    file_index_entry_t *entry = &g_file_index.entries[g_file_index.count];
+    str_copy(entry->path, path);
+    entry->size = size;
+    entry->mod_time_low = mod_time_low;
+    entry->mod_time_high = mod_time_high;
+    entry->is_directory = is_dir;
+    
+    g_file_index.count++;
+    
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    return true;
+}
+
+bool file_index_remove_entry(const char *path) {
+    if (!path) {
+        return false;
+    }
+    
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    
+    for (int i = 0; i < g_file_index.count; i++) {
+        if (str_cmp(g_file_index.entries[i].path, path) == 0) {
+            for (int j = i; j < g_file_index.count - 1; j++) {
+                g_file_index.entries[j] = g_file_index.entries[j + 1];
+            }
+            g_file_index.count--;
+            spinlock_release_irqrestore(&g_index_lock, flags);
+            return true;
+        }
+    }
+    
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    return false;
+}
+
+int file_index_get_entry_count(void) {
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    int count = g_file_index.count;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    return count;
+}
+
+void file_index_clear(void) {
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    g_file_index.count = 0;
+    g_index_valid = false;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+}
+
+void file_index_invalidate_cache(void) {
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    g_index_valid = false;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+}
+
+bool file_index_is_valid(void) {
+    uint64_t flags = spinlock_acquire_irqsave(&g_index_lock);
+    bool valid = g_index_valid;
+    spinlock_release_irqrestore(&g_index_lock, flags);
+    return valid;
+}

src/sys/file_index.h

@@ -0,0 +1,50 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#ifndef FILE_INDEX_H
+#define FILE_INDEX_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#define FILE_INDEX_MAX_ENTRIES 50000
+#define FILE_INDEX_MAX_PATH 1024
+#define FILE_INDEX_CACHE_PATH "/Library/Index/file_index.dat"
+#define FILE_INDEX_VERSION 1
+
+typedef struct {
+    char path[FILE_INDEX_MAX_PATH];
+    uint32_t size;
+    uint32_t mod_time_low; 
+    uint32_t mod_time_high;
+    bool is_directory;
+} file_index_entry_t;
+
+typedef struct {
+    file_index_entry_t entry;
+    int match_score;  
+} file_index_result_t;
+
+typedef struct {
+    file_index_entry_t entries[FILE_INDEX_MAX_ENTRIES];
+    int count;         
+    int capacity;     
+} file_index_t;
+
+void file_index_init(void);
+bool file_index_build(void);
+bool file_index_load(void);
+bool file_index_save(void);
+
+int file_index_find_fuzzy(const char *query, file_index_result_t *results, int max_results);
+
+bool file_index_add_entry(const char *path, uint32_t size, uint32_t mod_time_low, uint32_t mod_time_high, bool is_dir);
+bool file_index_remove_entry(const char *path);
+
+int file_index_get_entry_count(void);
+void file_index_clear(void);
+void file_index_invalidate_cache(void);
+bool file_index_is_valid(void);  
+
+#endif

src/sys/idt.c

@@ -140,12 +140,12 @@ static void pic_remap(void) {
 static void pit_setup(void) {
     uint16_t divisor = 1193182 / 60;  // ~60Hz
     
-    // Send command byte
-    outb(0x43, 0x36); // Channel 0, lobyte/hibyte, mode 3 (square wave), binary
+    // Mode 2: Rate Generator (more appropriate for periodic interrupts)
+    outb(0x43, 0x34); io_wait(); // Channel 0, lobyte/hibyte, mode 2, binary
     
     // Send divisor
-    outb(0x40, divisor & 0xFF);
-    outb(0x40, (divisor >> 8) & 0xFF);
+    outb(0x40, divisor & 0xFF); io_wait();
+    outb(0x40, (divisor >> 8) & 0xFF); io_wait();
 }
 
 void idt_init(void) {

src/sys/kernel_subsystem.c

@@ -0,0 +1,73 @@
+#include "kernel_subsystem.h"
+#include "memory_manager.h"
+#include "spinlock.h"
+
+static kernel_subsystem_t subsystems[MAX_SUBSYSTEMS];
+static int subsystem_count = 0;
+static spinlock_t sub_lock = SPINLOCK_INIT;
+
+extern void mem_memset(void *dest, int val, size_t len);
+extern void mem_memcpy(void *dest, const void *src, size_t len);
+
+static void sub_strcpy(char *dest, const char *src) {
+    while (*src) *dest++ = *src++;
+    *dest = 0;
+}
+
+static int sub_strcmp(const char *a, const char *b) {
+    while (*a && *a == *b) { a++; b++; }
+    return (unsigned char)*a - (unsigned char)*b;
+}
+
+void subsystem_register(const char *name, kernel_subsystem_t **out_sub) {
+    uint64_t flags = spinlock_acquire_irqsave(&sub_lock);
+    
+    if (subsystem_count >= MAX_SUBSYSTEMS) {
+        spinlock_release_irqrestore(&sub_lock, flags);
+        if (out_sub) *out_sub = NULL;
+        return;
+    }
+
+    // Check if already exists
+    for (int i = 0; i < subsystem_count; i++) {
+        if (sub_strcmp(subsystems[i].name, name) == 0) {
+            spinlock_release_irqrestore(&sub_lock, flags);
+            if (out_sub) *out_sub = &subsystems[i];
+            return;
+        }
+    }
+
+    kernel_subsystem_t *s = &subsystems[subsystem_count++];
+    mem_memset(s, 0, sizeof(kernel_subsystem_t));
+    sub_strcpy(s->name, name);
+    
+    spinlock_release_irqrestore(&sub_lock, flags);
+    if (out_sub) *out_sub = s;
+}
+
+void subsystem_add_file(kernel_subsystem_t *sub, const char *name, 
+                        int (*read)(char*, int, int), 
+                        int (*write)(const char*, int, int)) {
+    if (!sub || sub->file_count >= MAX_SUBSYSTEM_FILES) return;
+    
+    subsystem_file_t *f = &sub->files[sub->file_count++];
+    sub_strcpy(f->name, name);
+    f->read = read;
+    f->write = write;
+}
+
+kernel_subsystem_t* subsystem_get_by_name(const char *name) {
+    for (int i = 0; i < subsystem_count; i++) {
+        if (sub_strcmp(subsystems[i].name, name) == 0) return &subsystems[i];
+    }
+    return NULL;
+}
+
+int subsystem_get_count(void) {
+    return subsystem_count;
+}
+
+kernel_subsystem_t* subsystem_get_by_index(int index) {
+    if (index < 0 || index >= subsystem_count) return NULL;
+    return &subsystems[index];
+}

src/sys/kernel_subsystem.h

@@ -0,0 +1,32 @@
+#ifndef KERNEL_SUBSYSTEM_H
+#define KERNEL_SUBSYSTEM_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#define MAX_SUBSYSTEMS 16
+#define MAX_SUBSYSTEM_FILES 32
+
+typedef struct {
+    char name[64];
+    int (*read)(char *buffer, int size, int offset);
+    int (*write)(const char *buffer, int size, int offset);
+} subsystem_file_t;
+
+typedef struct {
+    char name[64];
+    subsystem_file_t files[MAX_SUBSYSTEM_FILES];
+    int file_count;
+} kernel_subsystem_t;
+
+void subsystem_register(const char *name, kernel_subsystem_t **out_sub);
+void subsystem_add_file(kernel_subsystem_t *sub, const char *name, 
+                        int (*read)(char*, int, int), 
+                        int (*write)(const char*, int, int));
+
+kernel_subsystem_t* subsystem_get_by_name(const char *name);
+int subsystem_get_count(void);
+kernel_subsystem_t* subsystem_get_by_index(int index);
+
+#endif

src/sys/module_manager.c

@@ -0,0 +1,29 @@
+#include "module_manager.h"
+#include "memory_manager.h"
+
+#define MAX_MODULES 32
+static kernel_module_t modules[MAX_MODULES];
+static int module_count = 0;
+
+static void mod_strcpy(char *dest, const char *src) {
+    while (*src) *dest++ = *src++;
+    *dest = 0;
+}
+
+void module_manager_register(const char *name, uint64_t addr, uint64_t size) {
+    if (module_count >= MAX_MODULES) return;
+    
+    kernel_module_t *m = &modules[module_count++];
+    mod_strcpy(m->name, name);
+    m->address = addr;
+    m->size = size;
+}
+
+int module_manager_get_count(void) {
+    return module_count;
+}
+
+kernel_module_t* module_manager_get_index(int index) {
+    if (index < 0 || index >= module_count) return NULL;
+    return &modules[index];
+}

src/sys/module_manager.h

@@ -0,0 +1,17 @@
+#ifndef MODULE_MANAGER_H
+#define MODULE_MANAGER_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+typedef struct {
+    char name[64];
+    uint64_t address;
+    uint64_t size;
+} kernel_module_t;
+
+void module_manager_register(const char *name, uint64_t addr, uint64_t size);
+int module_manager_get_count(void);
+kernel_module_t* module_manager_get_index(int index);
+
+#endif

src/sys/process.c

@@ -20,30 +20,31 @@ extern void serial_write(const char *str);
 #define MAX_PROCESSES 16
 #define MAX_CPUS_SCHED 32
 process_t processes[MAX_PROCESSES] __attribute__((aligned(16)));
-int process_count = 0;
 static process_t* current_process[MAX_CPUS_SCHED] = {0}; // Per-CPU
 static uint32_t next_pid = 0;
-static void *free_kernel_stack_later = NULL;
-static uint64_t free_pml4_later = 0;
+static void *free_kernel_stack_later[MAX_CPUS_SCHED] = {0};
+static uint64_t free_pml4_later[MAX_CPUS_SCHED] = {0};
 static spinlock_t runqueue_lock = SPINLOCK_INIT;
-static uint32_t next_cpu_assign = 1; // Round-robin CPU assignment (start from CPU 1)
+static uint32_t next_cpu_assign = 1; 
+
+static void process_cleanup_inner(process_t *proc);
 
 void process_init(void) {
     for (int i = 0; i < MAX_PROCESSES; i++) {
         processes[i].pid = 0xFFFFFFFF;
     }
 
-    // Current kernel execution is PID 0
-    process_t *kernel_proc = &processes[process_count++];
+    process_t *kernel_proc = &processes[0];
     kernel_proc->pid = next_pid++;
     kernel_proc->is_user = false;
+    kernel_proc->is_idle = true;
+    kernel_proc->tty_id = -1;
+    kernel_proc->kill_pending = false;
     
-    // We don't have its RSP or PML4 yet, but it's already running.
-    // The timer interrupt will naturally capture its context on the first tick!
+
     kernel_proc->pml4_phys = paging_get_pml4_phys();
     kernel_proc->kernel_stack = 0;
     
-    // Initialize FPU/SSE state for kernel (first interrupt will capture it on stack)
     kernel_proc->fpu_initialized = true;
 
     for (int i = 0; i < MAX_PROCESS_FDS; i++) kernel_proc->fds[i] = NULL;
@@ -55,20 +56,41 @@ void process_init(void) {
 
     kernel_proc->next = kernel_proc; // Circular linked list
     kernel_proc->cpu_affinity = 0;   // Kernel always on BSP
+    mem_memset(kernel_proc->cwd, 0, 1024);
+    kernel_proc->cwd[0] = '/';
     current_process[0] = kernel_proc;
 }
 
 process_t* process_create(void (*entry_point)(void), bool is_user) {
     uint64_t rflags = spinlock_acquire_irqsave(&runqueue_lock);
     
-    if (process_count >= MAX_PROCESSES) {
+    process_t *new_proc = NULL;
+    for (int i = 0; i < MAX_PROCESSES; i++) {
+        if (processes[i].pid == 0xFFFFFFFF) {
+            new_proc = &processes[i];
+            break;
+        }
+    }
+
+    if (!new_proc) {
         spinlock_release_irqrestore(&runqueue_lock, rflags);
         return NULL;
     }
     
-    process_t *new_proc = &processes[process_count++];
     new_proc->pid = next_pid++;
     new_proc->is_user = is_user;
+    new_proc->tty_id = -1;
+    new_proc->kill_pending = false;
+    
+    process_t *parent = process_get_current();
+    if (parent) {
+        extern void mem_memcpy(void *dest, const void *src, size_t len);
+        mem_memcpy(new_proc->cwd, parent->cwd, 1024);
+        new_proc->tty_id = parent->tty_id;
+    } else {
+        mem_memset(new_proc->cwd, 0, 1024);
+        new_proc->cwd[0] = '/';
+    }
     
     // 1. Setup Page Table
     if (is_user) {
@@ -157,15 +179,14 @@ process_t* process_create(void (*entry_point)(void), bool is_user) {
     return new_proc;
 }
 
-process_t* process_create_elf(const char* filepath, const char* args_str) {
+process_t* process_create_elf(const char* filepath, const char* args_str, bool terminal_proc, int tty_id) {
     uint64_t rflags = spinlock_acquire_irqsave(&runqueue_lock);
     process_t *new_proc = NULL;
     
     // Find an available slot
     for (int i = 0; i < MAX_PROCESSES; i++) {
-        if (processes[i].pid == 0xFFFFFFFF || i >= process_count) {
+        if (processes[i].pid == 0xFFFFFFFF) {
             new_proc = &processes[i];
-            if (i >= process_count) process_count = i + 1;
             break;
         }
     }
@@ -189,16 +210,27 @@ process_t* process_create_elf(const char* filepath, const char* args_str) {
     new_proc->ui_window = NULL;
     new_proc->heap_start = 0x20000000; // 512MB mark
     new_proc->heap_end = 0x20000000;
-    new_proc->is_terminal_proc = false;
+    new_proc->is_terminal_proc = terminal_proc;
+    new_proc->tty_id = tty_id;
+    new_proc->kill_pending = false;
+
+    process_t *parent = process_get_current();
+    if (parent) {
+        extern void mem_memcpy(void *dest, const void *src, size_t len);
+        mem_memcpy(new_proc->cwd, parent->cwd, 1024);
+    } else {
+        extern void mem_memset(void *dest, int val, size_t len);
+        mem_memset(new_proc->cwd, 0, 1024);
+        new_proc->cwd[0] = '/';
+    }
 
     // 2. Load ELF executable
     size_t elf_load_size = 0;
     uint64_t entry_point = elf_load(filepath, new_proc->pml4_phys, &elf_load_size);
     if (entry_point == 0) {
-        serial_write("[PROCESS] Failed to load ELF: ");
+        serial_write("[PROC] Failed to load ELF: ");
         serial_write(filepath);
         serial_write("\n");
-        // We technically leak the page table here, but let's ignore cleanup for now
         return NULL;
     }
 
@@ -354,7 +386,7 @@ process_t* process_create_elf(const char* filepath, const char* args_str) {
     current_process[0]->next = new_proc;
     spinlock_release_irqrestore(&runqueue_lock, rflags);
     
-    serial_write("[PROCESS] Spawned ELF Executable: ");
+    serial_write("[PROC] Exec: ");
     serial_write(filepath);
     serial_write("\n");
     return new_proc;
@@ -376,25 +408,102 @@ process_t* process_get_current(void) {
 }
 
 uint64_t process_schedule(uint64_t current_rsp) {
-    if (free_kernel_stack_later) {
-        kfree(free_kernel_stack_later);
-        free_kernel_stack_later = NULL;
+    uint32_t my_cpu = smp_this_cpu_id();
+    uint64_t rflags = spinlock_acquire_irqsave(&runqueue_lock);
+
+    void *cleanup_stack = NULL;
+    uint64_t cleanup_pml4 = 0;
+
+    if (free_kernel_stack_later[my_cpu]) {
+        cleanup_stack = free_kernel_stack_later[my_cpu];
+        free_kernel_stack_later[my_cpu] = NULL;
     }
-    if (free_pml4_later) {
-        extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
-        paging_destroy_user_pml4_phys(free_pml4_later);
-        free_pml4_later = 0;
+    if (free_pml4_later[my_cpu]) {
+        cleanup_pml4 = free_pml4_later[my_cpu];
+        free_pml4_later[my_cpu] = 0;
     }
 
-    uint32_t my_cpu = smp_this_cpu_id();
     process_t *cur = current_process[my_cpu];
     
-    if (!cur || !cur->next || cur == cur->next) 
+    if (!cur || !cur->next || cur == cur->next) {
+        spinlock_release_irqrestore(&runqueue_lock, rflags);
+
+        // Perform cleanup outside the lock
+        if (cleanup_stack) kfree(cleanup_stack);
+        if (cleanup_pml4) {
+            extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
+            paging_destroy_user_pml4_phys(cleanup_pml4);
+        }
+
         return current_rsp;
+    }
         
     // Save context
     cur->rsp = current_rsp;
 
+    if (cur->kill_pending && cur->pid != 0xFFFFFFFF && cur->pid != 0) {
+        process_cleanup_inner(cur);
+
+        process_t *prev = cur;
+        while (prev->next != cur) {
+            prev = prev->next;
+        }
+
+        if (prev != cur) {
+            prev->next = cur->next;
+
+            process_t *next_proc = cur->next;
+            while (next_proc != cur) {
+                if (next_proc->cpu_affinity == my_cpu && next_proc->pid != 0xFFFFFFFF && !next_proc->kill_pending) break;
+                next_proc = next_proc->next;
+            }
+
+            if (next_proc == cur || next_proc->cpu_affinity != my_cpu) {
+                for (int i = 0; i < MAX_PROCESSES; i++) {
+                    if (processes[i].pid == 0 || (processes[i].cpu_affinity == my_cpu && processes[i].is_user == false)) {
+                        next_proc = &processes[i];
+                        break;
+                    }
+                }
+            }
+
+            current_process[my_cpu] = next_proc;
+
+            cur->pid = 0xFFFFFFFF;
+            cur->cpu_affinity = 0xFFFFFFFF;
+            cur->ui_window = NULL;
+            cur->is_terminal_proc = false;
+            cur->kill_pending = false;
+
+            free_kernel_stack_later[my_cpu] = cur->kernel_stack_alloc;
+            cur->kernel_stack_alloc = NULL;
+            free_pml4_later[my_cpu] = cur->pml4_phys;
+            cur->pml4_phys = 0;
+
+            if (current_process[my_cpu]->is_user && current_process[my_cpu]->kernel_stack) {
+                tss_set_stack_cpu(my_cpu, current_process[my_cpu]->kernel_stack);
+                cpu_state_t *cpu_state = smp_get_cpu(my_cpu);
+                if (cpu_state) {
+                    cpu_state->kernel_syscall_stack = current_process[my_cpu]->kernel_stack;
+                }
+            }
+
+            paging_switch_directory(current_process[my_cpu]->pml4_phys);
+
+            current_process[my_cpu]->ticks++;
+            uint64_t next_rsp = current_process[my_cpu]->rsp;
+
+            spinlock_release_irqrestore(&runqueue_lock, rflags);
+            if (cleanup_stack) kfree(cleanup_stack);
+            if (cleanup_pml4) {
+                extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
+                paging_destroy_user_pml4_phys(cleanup_pml4);
+            }
+
+            return next_rsp;
+        }
+    }
+
     // Switch to next ready process assigned to this CPU
     extern uint32_t wm_get_ticks(void);
     uint32_t now = wm_get_ticks();
@@ -404,7 +513,7 @@ uint64_t process_schedule(uint64_t current_rsp) {
     
     while (next_proc != start) {
         // Only consider processes assigned to our CPU and not terminated
-        if (next_proc->cpu_affinity == my_cpu && next_proc->pid != 0xFFFFFFFF) {
+        if (next_proc->cpu_affinity == my_cpu && next_proc->pid != 0xFFFFFFFF && !next_proc->kill_pending) {
             if (next_proc->pid == 0 || next_proc->sleep_until == 0 || next_proc->sleep_until <= now) {
                 break;
             }
@@ -412,11 +521,8 @@ uint64_t process_schedule(uint64_t current_rsp) {
         next_proc = next_proc->next;
     }
     
-    // If we didn't find a ready process for our CPU, stay on current (unless we are terminated)
     if (next_proc->cpu_affinity != my_cpu || next_proc->pid == 0xFFFFFFFF) {
-        // Fallback to idle if current is terminated
         if (cur && cur->pid == 0xFFFFFFFF) {
-            // Find the idle process for this CPU
             for (int i = 0; i < MAX_PROCESSES; i++) {
                 if (processes[i].pid == 0 || (processes[i].cpu_affinity == my_cpu && processes[i].is_user == false)) {
                     next_proc = &processes[i];
@@ -424,18 +530,25 @@ uint64_t process_schedule(uint64_t current_rsp) {
                 }
             }
         } else {
+            spinlock_release_irqrestore(&runqueue_lock, rflags);
+
+            if (cleanup_stack) kfree(cleanup_stack);
+            if (cleanup_pml4) {
+                extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
+                paging_destroy_user_pml4_phys(cleanup_pml4);
+            }
+
             return current_rsp;
         }
     }
     
     current_process[my_cpu] = next_proc;
     
-    // Update Kernel Stack for User Mode interrupts and System Calls
     if (current_process[my_cpu]->is_user && current_process[my_cpu]->kernel_stack) {
         tss_set_stack_cpu(my_cpu, current_process[my_cpu]->kernel_stack);
-        if (my_cpu == 0) {
-            extern uint64_t kernel_syscall_stack;
-            kernel_syscall_stack = current_process[my_cpu]->kernel_stack;
+        cpu_state_t *cpu_state = smp_get_cpu(my_cpu);
+        if (cpu_state) {
+            cpu_state->kernel_syscall_stack = current_process[my_cpu]->kernel_stack;
         }
     }
     
@@ -443,8 +556,16 @@ uint64_t process_schedule(uint64_t current_rsp) {
     paging_switch_directory(current_process[my_cpu]->pml4_phys);
     
     current_process[my_cpu]->ticks++;
+    uint64_t next_rsp = current_process[my_cpu]->rsp;
 
-    return current_process[my_cpu]->rsp;
+    spinlock_release_irqrestore(&runqueue_lock, rflags);
+    if (cleanup_stack) kfree(cleanup_stack);
+    if (cleanup_pml4) {
+        extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
+        paging_destroy_user_pml4_phys(cleanup_pml4);
+    }
+
+    return next_rsp;
 }
 
 process_t* process_get_by_pid(uint32_t pid) {
@@ -454,12 +575,20 @@ process_t* process_get_by_pid(uint32_t pid) {
     return NULL;
 }
 
+void process_kill_by_tty(int tty_id) {
+    if (tty_id < 0) return;
+    for (int i = 0; i < MAX_PROCESSES; i++) {
+        if (processes[i].pid != 0xFFFFFFFF && processes[i].pid != 0 && processes[i].tty_id == tty_id) {
+            process_terminate(&processes[i]);
+        }
+    }
+}
+
 static void process_cleanup_inner(process_t *proc) {
     if (!proc || proc->pid == 0xFFFFFFFF) return;
 
     // 1. Cleanup side effects
-    extern Window win_cmd;
-    if (proc->ui_window && (proc->ui_window != &win_cmd)) {
+    if (proc->ui_window) {
         wm_remove_window((Window *)proc->ui_window);
         proc->ui_window = NULL;
     }
@@ -486,6 +615,14 @@ static void process_cleanup_inner(process_t *proc) {
 void process_terminate(process_t *to_delete) {
     if (!to_delete || to_delete->pid == 0xFFFFFFFF || to_delete->pid == 0) return;
 
+    uint32_t cpu_count = smp_cpu_count();
+    for (uint32_t c = 0; c < cpu_count && c < MAX_CPUS_SCHED; c++) {
+        if (current_process[c] == to_delete) {
+            to_delete->kill_pending = true;
+            return;
+        }
+    }
+
     uint64_t rflags = spinlock_acquire_irqsave(&runqueue_lock);
 
     process_cleanup_inner(to_delete);
@@ -506,7 +643,6 @@ void process_terminate(process_t *to_delete) {
     prev->next = to_delete->next;
     
     // Update per-CPU current_process if this was the current on any CPU
-    uint32_t cpu_count = smp_cpu_count();
     for (uint32_t c = 0; c < cpu_count && c < MAX_CPUS_SCHED; c++) {
         if (current_process[c] == to_delete) {
             process_t *np = to_delete->next;
@@ -528,6 +664,7 @@ void process_terminate(process_t *to_delete) {
     // Mark slot as free
     to_delete->pid = 0xFFFFFFFF; 
     to_delete->cpu_affinity = 0xFFFFFFFF;
+    to_delete->kill_pending = false;
 
     if (to_delete->user_stack_alloc) kfree(to_delete->user_stack_alloc);
     // Defer kernel stack until we switch away from it
@@ -596,29 +733,22 @@ uint64_t process_terminate_current(void) {
     to_delete->cpu_affinity = 0xFFFFFFFF;
     to_delete->ui_window = NULL;
     to_delete->is_terminal_proc = false;
+    to_delete->kill_pending = false;
 
     // 4. Load context for the NEXT process
     if (current_process[my_cpu]->is_user && current_process[my_cpu]->kernel_stack) {
         tss_set_stack_cpu(my_cpu, current_process[my_cpu]->kernel_stack);
-        if (my_cpu == 0) {
-            extern uint64_t kernel_syscall_stack;
-            kernel_syscall_stack = current_process[my_cpu]->kernel_stack;
+        cpu_state_t *cpu_state = smp_get_cpu(my_cpu);
+        if (cpu_state) {
+            cpu_state->kernel_syscall_stack = current_process[my_cpu]->kernel_stack;
         }
     }
     
     paging_switch_directory(current_process[my_cpu]->pml4_phys);
 
-    // 5. Free memory
-    if (to_delete->user_stack_alloc) kfree(to_delete->user_stack_alloc);
-    
-    extern void paging_destroy_user_pml4_phys(uint64_t pml4_phys);
-    if (to_delete->pml4_phys && to_delete->is_user) {
-        paging_destroy_user_pml4_phys(to_delete->pml4_phys);
-    }
-    
-    to_delete->user_stack_alloc = NULL;
-    free_kernel_stack_later = to_delete->kernel_stack_alloc;
+    free_kernel_stack_later[my_cpu] = to_delete->kernel_stack_alloc;
     to_delete->kernel_stack_alloc = NULL;
+    free_pml4_later[my_cpu] = to_delete->pml4_phys;
     to_delete->pml4_phys = 0;
     
     uint64_t next_rsp = current_process[my_cpu]->rsp;
@@ -666,4 +796,3 @@ process_t* process_get_by_ui_window(void *win) {
     }
     return NULL;
 }
-

src/sys/process.h

@@ -43,6 +43,8 @@ typedef struct process {
     void *user_stack_alloc;  
 
     bool is_terminal_proc;   
+    int tty_id;              
+    bool kill_pending;       
 
     struct process *next;
 
@@ -52,7 +54,9 @@ typedef struct process {
     uint64_t ticks;
     uint64_t sleep_until;
     size_t used_memory;
-    uint32_t cpu_affinity;    // Which CPU this process runs on (0 = BSP)
+    uint32_t cpu_affinity;    
+    bool is_idle;            
+    char cwd[1024];          
 } __attribute__((aligned(16))) process_t;
 
 typedef struct {
@@ -60,11 +64,12 @@ typedef struct {
     char name[64];
     uint64_t ticks;
     size_t used_memory;
+    bool is_idle;
 } ProcessInfo;
 
 void process_init(void);
 process_t* process_create(void (*entry_point)(void), bool is_user);
-process_t* process_create_elf(const char* filepath, const char* args_str);
+process_t* process_create_elf(const char* filepath, const char* args_str, bool terminal_proc, int tty_id);
 process_t* process_get_current(void);
 void process_set_current_for_cpu(uint32_t cpu_id, process_t* p);
 process_t* process_get_current_for_cpu(uint32_t cpu_id);
@@ -72,8 +77,9 @@ uint64_t process_schedule(uint64_t current_rsp);
 uint64_t process_terminate_current(void);
 void process_terminate(process_t *proc);
 process_t* process_get_by_pid(uint32_t pid);
+void process_kill_by_tty(int tty_id);
 
-// SMP: IPI handler for AP scheduling (called from ISR)
+// SMP: IPI handler for AP scheduling 
 uint64_t sched_ipi_handler(registers_t *regs);
 
 void process_push_gui_event(process_t *proc, gui_event_t *ev);

src/sys/smp.c

@@ -10,6 +10,7 @@
 #include "paging.h"
 #include "process.h"
 #include "work_queue.h"
+#include "core/kutils.h"
 
 extern void serial_write(const char *str);
 extern void serial_write_num(uint32_t n);
@@ -18,20 +19,36 @@ extern void serial_write_hex(uint64_t n);
 static cpu_state_t *cpu_states = NULL;
 static uint32_t total_cpus = 0;
 static uint32_t bsp_lapic_id = 0;
+static cpu_state_t *bsp_cpu_state = NULL;
+
+#define MSR_GS_BASE         0xC0000101
+#define MSR_KERNEL_GS_BASE  0xC0000102
+
+static inline void wrmsr(uint32_t msr, uint64_t value) {
+    uint32_t low = (uint32_t)value;
+    uint32_t high = (uint32_t)(value >> 32);
+    asm volatile("wrmsr" : : "c"(msr), "a"(low), "d"(high));
+}
 
 static uint32_t read_lapic_id(void) {
-    uint32_t eax, ebx, ecx, edx;
-    asm volatile("cpuid" : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) : "a"(1));
-    return (ebx >> 24) & 0xFF;
+    extern uint64_t hhdm_offset;
+    volatile uint32_t *lapic = (volatile uint32_t *)(hhdm_offset + 0xFEE00000ULL);
+    return (lapic[0x020 / 4] >> 24) & 0xFF;
 }
 
 uint32_t smp_this_cpu_id(void) {
-    if (total_cpus <= 1) return 0;
+    if (!cpu_states || total_cpus == 0) return 0;
+
     uint32_t lapic = read_lapic_id();
+    if (lapic == bsp_lapic_id) return 0;
+    cpu_state_t *state = NULL;
+    asm volatile("movq %%gs:0, %0" : "=r"(state) : : "memory");
+    if (state && state->lapic_id == lapic) return state->cpu_id;
     for (uint32_t i = 0; i < total_cpus; i++) {
-        if (cpu_states[i].lapic_id == lapic) return i;
+        if (cpu_states[i].online && cpu_states[i].lapic_id == lapic) return i;
     }
-    return 0; // Fallback to BSP
+    
+    return 0; 
 }
 
 uint32_t smp_cpu_count(void) {
@@ -68,13 +85,21 @@ static void ap_entry(struct limine_smp_info *info) {
     extern void idt_load(void);
     idt_load();
 
+    extern void syscall_init(void);
+    syscall_init();
+
     uint64_t kernel_cr3 = paging_get_pml4_phys();
     asm volatile("mov %0, %%cr3" : : "r"(kernel_cr3));
 
     extern void lapic_enable(void);
     lapic_enable();
 
+    cpu_states[my_id].self = &cpu_states[my_id];
     cpu_states[my_id].online = true;
+    cpu_states[my_id].kernel_syscall_stack = cpu_states[my_id].kernel_stack;
+
+    wrmsr(MSR_GS_BASE, (uint64_t)&cpu_states[my_id]);
+    wrmsr(MSR_KERNEL_GS_BASE, (uint64_t)&cpu_states[my_id]);
 
     serial_write("[SMP] AP ");
     serial_write_num(my_id);
@@ -84,12 +109,31 @@ static void ap_entry(struct limine_smp_info *info) {
 
     process_t *ap_idle = process_create(NULL, false); 
     ap_idle->cpu_affinity = my_id;
+    ap_idle->is_idle = true;
+    k_strcpy(ap_idle->name, "idle:");
+    char id_s[8]; k_itoa(my_id, id_s);
+    k_strcpy(ap_idle->name + 5, id_s);
+    
     process_set_current_for_cpu(my_id, ap_idle);
     asm volatile("sti");
 
     work_queue_drain_loop();
 }
 
+void smp_init_bsp(void) {
+    static cpu_state_t bsp_state_static = {0};
+    bsp_state_static.cpu_id = 0;
+    bsp_lapic_id = read_lapic_id();
+    bsp_state_static.lapic_id = bsp_lapic_id;
+    bsp_state_static.self = &bsp_state_static;
+    bsp_state_static.online = true;
+    
+    wrmsr(MSR_GS_BASE, (uint64_t)&bsp_state_static);
+    wrmsr(MSR_KERNEL_GS_BASE, (uint64_t)&bsp_state_static);
+    
+    bsp_cpu_state = &bsp_state_static;
+}
+
 // --- SMP Initialization ---
 uint32_t smp_init(struct limine_smp_response *smp_resp) {
     if (!smp_resp || smp_resp->cpu_count <= 1) {
@@ -132,8 +176,15 @@ uint32_t smp_init(struct limine_smp_response *smp_resp) {
         cpu_states[i].lapic_id = cpu->lapic_id;
 
         if (cpu->lapic_id == bsp_lapic_id) {
-            cpu_states[i].online = true;
+            cpu_states[i] = *bsp_cpu_state; // Copy early BSP state
+            cpu_states[i].self = &cpu_states[i];
+            
+            cpu_states[i].kernel_stack = 0; // Limine stack for now
+            cpu_states[i].kernel_syscall_stack = 0; 
             bsp_index = i;
+            wrmsr(MSR_GS_BASE, (uint64_t)&cpu_states[i]);
+            wrmsr(MSR_KERNEL_GS_BASE, (uint64_t)&cpu_states[i]);
+            
             serial_write("[SMP] BSP CPU ");
             serial_write_num(i);
             serial_write(" (LAPIC ");

src/sys/smp.h

@@ -8,29 +8,27 @@
 #include <stdbool.h>
 #include "spinlock.h"
 
-// Per-CPU state. Dynamically allocated at boot based on actual CPU count.
 typedef struct cpu_state {
-    uint32_t cpu_id;           // Logical CPU index (0 = BSP)
-    uint32_t lapic_id;         // Local APIC ID from Limine
-    uint64_t kernel_stack;     // Top of kernel stack for this CPU
-    void    *kernel_stack_alloc; // Base allocation for kfree
-    volatile bool online;      // True once AP is fully initialized
+    struct cpu_state *self;    
+    uint32_t cpu_id;           
+    uint32_t lapic_id;         
+    uint64_t kernel_stack;     
+    void    *kernel_stack_alloc; 
+    volatile bool online;      
+    uint64_t user_rsp_scratch;  
+    uint64_t kernel_syscall_stack; 
 } cpu_state_t;
+ 
+ void smp_init_bsp(void);
+
 
-// Initialize SMP — call after GDT/IDT/memory init but before wm_init.
-// Pass the Limine SMP response. APs will be started and will enter their
-// idle loops. Returns the number of CPUs brought online.
 struct limine_smp_response;
 uint32_t smp_init(struct limine_smp_response *smp_resp);
 
-// Get the current CPU index (0 = BSP). Uses CPUID to read LAPIC ID,
-// then looks up in the cpu table.
 uint32_t smp_this_cpu_id(void);
 
-// Total number of CPUs online.
 uint32_t smp_cpu_count(void);
 
-// Get per-CPU state by index.
 cpu_state_t *smp_get_cpu(uint32_t cpu_id);
 
 #endif

src/sys/syscall.c

@@ -8,6 +8,7 @@
 #include "process.h"
 #include "wm.h"
 #include "fat32.h"
+#include "vfs.h"
 #include "paging.h"
 #include "work_queue.h"
 #include "smp.h"
@@ -18,11 +19,16 @@
 #include "network.h"
 #include "icmp.h"
 #include "cmd.h"
+#include "tty.h"
 #include "font_manager.h"
 #include "graphics.h"
 
 extern bool ps2_ctrl_pressed;
 
+#define SPAWN_FLAG_TERMINAL 0x1
+#define SPAWN_FLAG_INHERIT_TTY 0x2
+#define SPAWN_FLAG_TTY_ID 0x4
+
 // Read MSR
 static inline uint64_t rdmsr(uint32_t msr) {
     uint32_t low, high;
@@ -76,6 +82,14 @@ static void smp_user_wrapper(void *arg) {
 }
 
 void syscall_init(void) {
+    uint64_t efer = rdmsr(MSR_EFER);
+    efer |= 1; 
+    wrmsr(MSR_EFER, efer);
+    uint64_t star = ((uint64_t)0x001B << 48) | ((uint64_t)0x0008 << 32);
+    wrmsr(MSR_STAR, star);
+    extern void syscall_entry(void);
+    wrmsr(MSR_LSTAR, (uint64_t)syscall_entry);
+    wrmsr(MSR_FMASK, 0x200); 
 }
 
 static void user_window_close(Window *win) {
@@ -171,6 +185,12 @@ static void user_window_resize(Window *win, int w, int h) {
         extern void mem_memset(void *dest, int val, size_t len);
         mem_memset(win->pixels, 0, w * h * sizeof(uint32_t));
     }
+
+    process_t *proc = process_get_by_ui_window(win);
+    if (proc) {
+        gui_event_t ev = { .type = GUI_EVENT_RESIZE, .arg1 = w, .arg2 = h };
+        process_push_gui_event(proc, &ev);
+    }
 }
 
 
@@ -187,19 +207,36 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
     
     if (syscall_num == 1) { // SYS_WRITE
         extern void cmd_write_len(const char *str, size_t len);
-        cmd_write_len((const char*)arg2, (size_t)arg3);
+        process_t *proc = process_get_current();
+        const char *buf = (const char*)arg2;
+        size_t len = (size_t)arg3;
+        if (!proc || !proc->is_user) {
+            cmd_write_len(buf, len);
+            return len;
+        }
+        if (proc->is_terminal_proc) {
+            if (proc->tty_id >= 0) {
+                tty_write_output(proc->tty_id, buf, len);
+                return len;
+            }
+            cmd_write_len(buf, len);
+            return len;
+        }
+        return len;
     } else if (syscall_num == 3) { // SYS_GUI
         int cmd = (int)arg1;
         process_t *proc = process_get_current();
         
         if (cmd == GUI_CMD_WINDOW_CREATE) {
             extern void serial_write(const char *str);
-            serial_write("Kernel: GUI_CMD_WINDOW_CREATE\n");
-            
             const char *title = (const char *)arg2;
+            
+            serial_write("[WM] CreateWindow: ");
+            serial_write(title ? title : "Unknown");
+            serial_write("\n");
             uint64_t *u_params = (uint64_t *)arg3;
             if (!u_params) {
-                serial_write("Kernel: Error - params is NULL\n");
+                serial_write("[WM] Error - params is NULL\n");
                 return 0;
             }
 
@@ -207,14 +244,14 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             uint64_t params[4];
             for (int i = 0; i < 4; i++) params[i] = u_params[i];
             
-            serial_write("Kernel: Window params copied.\n");
+            // params verified
             
             Window *win = kmalloc(sizeof(Window));
             if (!win) {
-                serial_write("Kernel: Error - kmalloc failed for Window\n");
+                serial_write("[WM] Error - kmalloc failed for Window\n");
                 return 0;
             }
-            serial_write("Kernel: Window allocated.\n");
+            // win allocated
             
             extern void mem_memset(void *dest, int val, size_t len);
             mem_memset(win, 0, sizeof(Window));
@@ -231,11 +268,8 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                     kernel_title[i] = title[i];
                 }
                 kernel_title[title_len] = '\0';
-                serial_write("Kernel: Title copied: ");
-                serial_write(kernel_title);
-                serial_write("\n");
             } else {
-                serial_write("Kernel: Warning - kernel_title kmalloc failed\n");
+                serial_write("[WM] Warning: kernel_title kmalloc failed\n");
             }
             
             // Basic initialization
@@ -245,7 +279,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             win->w = (int)params[2];
             win->h = (int)params[3];
             
-            serial_write("Kernel: Init win dims.\n");
+            // dims ready
             
             // Sanity checks for dimensions
             if (win->w <= 0 || win->w > 4096) win->w = 400;
@@ -259,7 +293,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             win->font = NULL;
             win->lock = SPINLOCK_INIT;
             
-            serial_write("Kernel: Dims initialized.\n");
+            // ready
             
             size_t pixel_size = 0;
             // Safe allocation
@@ -274,7 +308,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                 win->comp_pixels = kmalloc(pixel_size);
             }
             
-            serial_write("Kernel: Buffers allocated.\n");
+            // buffs ok
             
             if (win->pixels) {
                 extern void mem_memset(void *dest, int val, size_t len);
@@ -285,7 +319,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                 mem_memset(win->comp_pixels, 0, pixel_size);
             }
             
-            serial_write("Kernel: Buffers cleared.\n");
+            serial_write("[WM] Buffers ready\n");
 
             // Set callbacks
             win->paint = user_window_paint;
@@ -298,6 +332,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             
             proc->ui_window = win;
             wm_add_window(win);
+            wm_mark_dirty(0, 0, get_screen_width(), 30);
             
             return (uint64_t)win;
         } else if (cmd == GUI_CMD_DRAW_RECT) {
@@ -406,10 +441,18 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                             int baseline = uy + font_manager_get_font_ascent_scaled(font, font->pixel_height) - 2;
                             int cur_x = ux;
                             const char *s = kernel_str;
+                            int start_x = cur_x;
                             while (*s) {
                                 uint32_t codepoint = utf8_decode(&s);
-                                font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
-                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
+                                if (codepoint == '\n') {
+                                    cur_x = start_x;
+                                    baseline += font_manager_get_font_line_height_scaled(font, font->pixel_height);
+                                } else if (codepoint == '\t') {
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, ' ', font->pixel_height) * 4;
+                                } else {
+                                    font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
+                                }
                             }
                         } else {
                             draw_string(ux, uy, kernel_str, color);
@@ -421,10 +464,18 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                         int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, font->pixel_height) - 2;
                         int cur_x = win->x + ux;
                         const char *s = kernel_str;
+                        int start_x = cur_x;
                         while (*s) {
                             uint32_t codepoint = utf8_decode(&s);
-                            font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
-                            cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
+                            if (codepoint == '\n') {
+                                cur_x = start_x;
+                                baseline += font_manager_get_font_line_height_scaled(font, font->pixel_height);
+                            } else if (codepoint == '\t') {
+                                cur_x += font_manager_get_codepoint_width_scaled(font, ' ', font->pixel_height) * 4;
+                            } else {
+                                font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, font->pixel_height, put_pixel);
+                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, font->pixel_height);
+                            }
                         }
                     } else {
                         draw_string(win->x + ux, win->y + uy, kernel_str, color);
@@ -510,10 +561,18 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                             int baseline = uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
                             int cur_x = ux;
                             const char *s = kernel_str;
+                            int start_x = cur_x;
                             while (*s) {
                                 uint32_t codepoint = utf8_decode(&s);
-                                font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
-                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                                if (codepoint == '\n') {
+                                    cur_x = start_x;
+                                    baseline += font_manager_get_font_line_height_scaled(font, scale);
+                                } else if (codepoint == '\t') {
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, ' ', scale) * 4;
+                                } else {
+                                    font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                                }
                             }
                         } else {
                             draw_string_scaled(ux, uy, kernel_str, color, scale);
@@ -525,10 +584,18 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                         int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
                         int cur_x = win->x + ux;
                         const char *s = kernel_str;
+                        int start_x = cur_x;
                         while (*s) {
                             uint32_t codepoint = utf8_decode(&s);
-                            font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
-                            cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                            if (codepoint == '\n') {
+                                cur_x = start_x;
+                                baseline += font_manager_get_font_line_height_scaled(font, scale);
+                            } else if (codepoint == '\t') {
+                                cur_x += font_manager_get_codepoint_width_scaled(font, ' ', scale) * 4;
+                            } else {
+                                font_manager_render_char_scaled(font, cur_x, baseline, codepoint, color, scale, put_pixel);
+                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                            }
                         }
                     } else {
                         draw_string_scaled(win->x + ux, win->y + uy, kernel_str, color, scale);
@@ -586,11 +653,19 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                             int baseline = uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
                             int cur_x = ux;
                             const char *s = kernel_str;
+                            int start_x = cur_x;
                             while (*s) {
                                 extern void font_manager_render_char_sloped(ttf_font_t *font, int x, int y, uint32_t codepoint, uint32_t color, float scale, float slope, void (*put_pixel_fn)(int, int, uint32_t));
                                 uint32_t codepoint = utf8_decode(&s);
-                                font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
-                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                                if (codepoint == '\n') {
+                                    cur_x = start_x;
+                                    baseline += font_manager_get_font_line_height_scaled(font, scale);
+                                } else if (codepoint == '\t') {
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, ' ', scale) * 4;
+                                } else {
+                                    font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
+                                    cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                                }
                             }
                         } else {
                             draw_string_scaled_sloped(ux, uy, kernel_str, color, scale, slope);
@@ -602,11 +677,19 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                         int baseline = win->y + uy + font_manager_get_font_ascent_scaled(font, scale) - 2;
                         int cur_x = win->x + ux;
                         const char *s = kernel_str;
+                        int start_x = cur_x;
                         while (*s) {
                             extern void font_manager_render_char_sloped(ttf_font_t *font, int x, int y, uint32_t codepoint, uint32_t color, float scale, float slope, void (*put_pixel_fn)(int, int, uint32_t));
                             uint32_t codepoint = utf8_decode(&s);
-                            font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
-                            cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                            if (codepoint == '\n') {
+                                cur_x = start_x;
+                                baseline += font_manager_get_font_line_height_scaled(font, scale);
+                            } else if (codepoint == '\t') {
+                                cur_x += font_manager_get_codepoint_width_scaled(font, ' ', scale) * 4;
+                            } else {
+                                font_manager_render_char_sloped(font, cur_x, baseline, codepoint, color, scale, slope, put_pixel);
+                                cur_x += font_manager_get_codepoint_width_scaled(font, codepoint, scale);
+                            }
                         }
                     } else {
                         draw_string_scaled_sloped(win->x + ux, win->y + uy, kernel_str, color, scale, slope);
@@ -743,7 +826,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             Window *win = (Window *)arg2;
             if (win) {
                 extern void serial_write(const char *str);
-                serial_write("Kernel: Setting window resizable to ");
+                serial_write("[WM] Resizable: ");
                 serial_write(arg3 ? "true\n" : "false\n");
                 win->resizable = (arg3 != 0);
             }
@@ -852,33 +935,35 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             const char *mode = (const char *)arg3;
             if (!path || !mode) return -1;
             
-            FAT32_FileHandle *fh = fat32_open(path, mode);
-            if (!fh) return -1;
+            // vfs_open now handles normalization internally with process_get_current()
+            // but let's be explicit if we can.
+            vfs_file_t *vf = vfs_open(path, mode);
+            if (!vf) return -1;
             
             for (int i = 0; i < MAX_PROCESS_FDS; i++) {
                 if (proc->fds[i] == NULL) {
-                    proc->fds[i] = fh;
+                    proc->fds[i] = vf;
                     return (uint64_t)i;
                 }
             }
-            fat32_close(fh);
+            vfs_close(vf);
             return -1;
         } else if (cmd == FS_CMD_READ) {
             int fd = (int)arg2;
             void *buf = (void *)arg3;
             uint32_t len = (uint32_t)arg4;
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            return (uint64_t)fat32_read((FAT32_FileHandle*)proc->fds[fd], buf, (int)len);
+            return (uint64_t)vfs_read((vfs_file_t*)proc->fds[fd], buf, (int)len);
         } else if (cmd == FS_CMD_WRITE) {
             int fd = (int)arg2;
             const void *buf = (const void *)arg3;
             uint32_t len = (uint32_t)arg4;
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            return (uint64_t)fat32_write((FAT32_FileHandle*)proc->fds[fd], buf, (int)len);
+            return (uint64_t)vfs_write((vfs_file_t*)proc->fds[fd], buf, (int)len);
         } else if (cmd == FS_CMD_CLOSE) {
             int fd = (int)arg2;
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            fat32_close((FAT32_FileHandle*)proc->fds[fd]);
+            vfs_close((vfs_file_t*)proc->fds[fd]);
             proc->fds[fd] = NULL;
             return 0;
         } else if (cmd == FS_CMD_SEEK) {
@@ -886,49 +971,107 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             int offset = (int)arg3;
             int whence = (int)arg4; // 0=SET, 1=CUR, 2=END
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            return (uint64_t)fat32_seek((FAT32_FileHandle*)proc->fds[fd], offset, whence);
+            return (uint64_t)vfs_seek((vfs_file_t*)proc->fds[fd], offset, whence);
         } else if (cmd == FS_CMD_TELL) {
             int fd = (int)arg2;
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            return (uint64_t)((FAT32_FileHandle*)proc->fds[fd])->position;
+            return (uint64_t)vfs_file_position((vfs_file_t*)proc->fds[fd]);
         } else if (cmd == FS_CMD_SIZE) {
             int fd = (int)arg2;
             if (fd < 0 || fd >= MAX_PROCESS_FDS || !proc->fds[fd]) return -1;
-            return (uint64_t)((FAT32_FileHandle*)proc->fds[fd])->size;
-        }
- else if (cmd == FS_CMD_LIST) {
+            return (uint64_t)vfs_file_size((vfs_file_t*)proc->fds[fd]);
+        } else if (cmd == FS_CMD_GETCWD) {
+            char *buf = (char *)arg2;
+            int size = (int)arg3;
+            if (!buf || size <= 0) return -1;
+            int len = (int)k_strlen(proc->cwd);
+            if (len >= size) return -1;
+            k_strcpy(buf, proc->cwd);
+            return (uint64_t)len;
+        } else if (cmd == FS_CMD_CHDIR) {
             const char *path = (const char *)arg2;
-            FAT32_FileInfo *entries = (FAT32_FileInfo *)arg3;
+            if (!path) return -1;
+            char normalized[VFS_MAX_PATH];
+            vfs_normalize_path(proc->cwd, path, normalized);
+            if (vfs_is_directory(normalized)) {
+                k_strcpy(proc->cwd, normalized);
+                return 0;
+            }
+            return -1;
+        } else if (cmd == FS_CMD_LIST) {
+            const char *path = (const char *)arg2;
+            FAT32_FileInfo *u_entries = (FAT32_FileInfo *)arg3;
             int max_entries = (int)arg4;
-            if (!path || !entries) return -1;
-            return (uint64_t)fat32_list_directory(path, entries, max_entries);
+            if (!path || !u_entries) return -1;
+            
+            char normalized[VFS_MAX_PATH];
+            vfs_normalize_path(proc->cwd, path, normalized);
+            
+            // Safety cap for kernel allocation
+            if (max_entries > 256) max_entries = 256;
+            if (max_entries <= 0) return 0;
+            
+            vfs_dirent_t *v_entries = (vfs_dirent_t *)kmalloc(sizeof(vfs_dirent_t) * max_entries);
+            if (!v_entries) return -1;
+            
+            int count = vfs_list_directory(normalized, v_entries, max_entries);
+            if (count > 0) {
+                for (int i = 0; i < count; i++) {
+                    // Direct copy as layouts are now aligned
+                    k_strcpy(u_entries[i].name, v_entries[i].name);
+                    u_entries[i].size = v_entries[i].size;
+                    u_entries[i].is_directory = v_entries[i].is_directory;
+                    u_entries[i].start_cluster = v_entries[i].start_cluster;
+                    u_entries[i].write_date = v_entries[i].write_date;
+                    u_entries[i].write_time = v_entries[i].write_time;
+                }
+            }
+            kfree(v_entries);
+            return (uint64_t)count;
         } else if (cmd == FS_CMD_DELETE) {
             const char *path = (const char *)arg2;
             if (!path) return -1;
-            return fat32_delete(path) ? 0 : -1;
+            char normalized[VFS_MAX_PATH];
+            vfs_normalize_path(proc->cwd, path, normalized);
+            return vfs_delete(normalized) ? 0 : -1;
         } else if (cmd == FS_CMD_GET_INFO) {
             const char *path = (const char *)arg2;
-            FAT32_FileInfo *info = (FAT32_FileInfo *)arg3;
-            if (!path || !info) return -1;
-            extern int fat32_get_info(const char *path, FAT32_FileInfo *info);
-            return (uint64_t)fat32_get_info(path, info);
+            FAT32_FileInfo *u_info = (FAT32_FileInfo *)arg3;
+            if (!path || !u_info) return -1;
+            
+            char normalized[VFS_MAX_PATH];
+            vfs_normalize_path(proc->cwd, path, normalized);
+            
+            vfs_dirent_t v_info;
+            int res = vfs_get_info(normalized, &v_info);
+            if (res == 0) {
+                k_strcpy(u_info->name, v_info.name);
+                u_info->size = v_info.size;
+                u_info->is_directory = v_info.is_directory;
+                u_info->start_cluster = v_info.start_cluster;
+                u_info->write_date = v_info.write_date;
+                u_info->write_time = v_info.write_time;
+            }
+            return (uint64_t)res;
         } else if (cmd == FS_CMD_MKDIR) {
             const char *path = (const char *)arg2;
             if (!path) return -1;
-            return fat32_mkdir(path) ? 0 : -1;
+            return vfs_mkdir(path) ? 0 : -1;
         } else if (cmd == FS_CMD_EXISTS) {
             const char *path = (const char *)arg2;
             if (!path) return 0;
-            return fat32_exists(path) ? 1 : 0;
+            return vfs_exists(path) ? 1 : 0;
         } else if (cmd == FS_CMD_GETCWD) {
             char *buf = (char *)arg2;
             int size = (int)arg3;
             if (!buf) return -1;
+            extern void fat32_get_current_dir(char *buf, int size);
             fat32_get_current_dir(buf, size);
             return 0;
         } else if (cmd == FS_CMD_CHDIR) {
             const char *path = (const char *)arg2;
             if (!path) return -1;
+            extern bool fat32_chdir(const char *path);
             return fat32_chdir(path) ? 0 : -1;
         }
         return 0;
@@ -1055,15 +1198,6 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             extern void k_beep(int freq, int ms);
             k_beep(freq, ms);
             return 0;
-        } else if (cmd == 15) { // SYSTEM_CMD_MEMINFO
-            uint64_t *out = (uint64_t *)arg2;
-            if (!out) return -1;
-            MemStats stats = memory_get_stats();
-            out[0] = stats.total_memory;
-            out[1] = stats.used_memory;
-            return 0;
-        } else if (cmd == 16) { // SYSTEM_CMD_UPTIME
-            return wm_get_ticks();
         } else if (cmd == 17) { // SYSTEM_CMD_PCI_LIST
             typedef struct {
                 uint16_t vendor;
@@ -1144,6 +1278,35 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             return cmd_get_config_value(key);
         } else if (cmd == 29) { // SYSTEM_CMD_SET_TEXT_COLOR
             uint32_t color = (uint32_t)arg2;
+            if (proc->is_terminal_proc && proc->tty_id >= 0) {
+                char seq[32];
+                int pos = 0;
+                int r = (color >> 16) & 0xFF;
+                int g = (color >> 8) & 0xFF;
+                int b = color & 0xFF;
+
+                seq[pos++] = 0x1B;
+                seq[pos++] = '[';
+                seq[pos++] = '3';
+                seq[pos++] = '8';
+                seq[pos++] = ';';
+                seq[pos++] = '2';
+                seq[pos++] = ';';
+
+                char num[8];
+                k_itoa(r, num);
+                for (int i = 0; num[i] && pos < (int)sizeof(seq) - 1; i++) seq[pos++] = num[i];
+                seq[pos++] = ';';
+                k_itoa(g, num);
+                for (int i = 0; num[i] && pos < (int)sizeof(seq) - 1; i++) seq[pos++] = num[i];
+                seq[pos++] = ';';
+                k_itoa(b, num);
+                for (int i = 0; num[i] && pos < (int)sizeof(seq) - 1; i++) seq[pos++] = num[i];
+                seq[pos++] = 'm';
+
+                tty_write_output(proc->tty_id, seq, (size_t)pos);
+                return 0;
+            }
             cmd_set_current_color(color);
             return 0;
         } else if (cmd == 31) { // SYSTEM_CMD_SET_WALLPAPER_PATH
@@ -1224,54 +1387,7 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
             size_t max_len = (size_t)arg3;
             extern int network_tcp_recv_nb(void *buf, size_t max_len);
             return (uint64_t)network_tcp_recv_nb(buf, max_len);
-        } else if (cmd == SYSTEM_CMD_PROCESS_LIST) {
-            ProcessInfo *out = (ProcessInfo *)arg2;
-            int max_procs = (int)arg3;
-            if (!out) return 0;
-            
-            extern process_t processes[];
-            
-            // Dynamically calculate kernel usage as: Total System Used - User Process Sum
-            MemStats stats = memory_get_stats();
-            size_t total_used = stats.used_memory;
-            size_t user_used = 0;
-            for (int i = 0; i < 16; i++) {
-                if (processes[i].pid != 0xFFFFFFFF && processes[i].pid != 0 && processes[i].is_user) {
-                    user_used += processes[i].used_memory;
-                }
-            }
-            if (total_used > user_used) processes[0].used_memory = total_used - user_used;
-            else processes[0].used_memory = 0;
-            
-            int count = 0;
-            for (int i = 0; i < 16; i++) {
-                if (processes[i].pid != 0xFFFFFFFF && (processes[i].is_user || processes[i].pid == 0)) {
-                    out[count].pid = processes[i].pid;
-                    extern void mem_memcpy(void *dest, const void *src, size_t len);
-                    mem_memcpy(out[count].name, processes[i].name, 64);
-                    
-                    if (processes[i].pid == 0) {
-                        out[count].name[0] = 'k'; out[count].name[1] = 'e'; out[count].name[2] = 'r';
-                        out[count].name[3] = 'n'; out[count].name[4] = 'e'; out[count].name[5] = 'l';
-                        out[count].name[6] = '\0';
-                    }
-                    
-                    out[count].ticks = processes[i].ticks;
-                    out[count].used_memory = processes[i].used_memory;
-                    
-                    count++;
-                    if (count >= max_procs) break;
-                }
-            }
-            return (uint64_t)count;
-        } else if (cmd == SYSTEM_CMD_GET_CPU_MODEL) {
-            char *user_buf = (char *)arg2;
-            if (!user_buf) return -1;
-            char model[64];
-            platform_get_cpu_model(model);
-            extern void mem_memcpy(void *dest, const void *src, size_t len);
-            mem_memcpy(user_buf, model, 49);
-            return 0;
+            return -1;
         } else if (cmd == 47) { // SYSTEM_CMD_SET_RESOLUTION
             uint16_t req_w = (uint16_t)arg2;
             uint16_t req_h = (uint16_t)arg3;
@@ -1310,12 +1426,86 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
                 return 0;
             }
             return -1;
-        } else if (cmd == 49) { // SYSTEM_CMD_GET_OS_INFO
-            os_info_t *info = (os_info_t *)arg2;
-            if (!info) return -1;
-            extern void get_os_info(os_info_t *info);
-            get_os_info(info);
+            return -1;
+        } else if (cmd == 60) { // SYSTEM_CMD_TTY_CREATE
+            return tty_create();
+        } else if (cmd == 61) { // SYSTEM_CMD_TTY_READ_OUT
+            int tty_id = (int)arg2;
+            char *buf = (char *)arg3;
+            size_t len = (size_t)arg4;
+            if (!buf || len == 0) return 0;
+            return tty_read_output(tty_id, buf, len);
+        } else if (cmd == 62) { // SYSTEM_CMD_TTY_WRITE_IN
+            int tty_id = (int)arg2;
+            const char *buf = (const char *)arg3;
+            size_t len = (size_t)arg4;
+            if (!buf || len == 0) return 0;
+            return tty_write_input(tty_id, buf, len);
+        } else if (cmd == 63) { // SYSTEM_CMD_TTY_READ_IN
+            char *buf = (char *)arg2;
+            size_t len = (size_t)arg3;
+            if (!buf || len == 0) return 0;
+            if (proc->tty_id < 0) return 0;
+            return tty_read_input(proc->tty_id, buf, len);
+        } else if (cmd == 65) { // SYSTEM_CMD_TTY_SET_FG
+            int tty_id = (int)arg2;
+            int pid = (int)arg3;
+            return tty_set_foreground(tty_id, pid);
+        } else if (cmd == 66) { // SYSTEM_CMD_TTY_GET_FG
+            int tty_id = (int)arg2;
+            return tty_get_foreground(tty_id);
+        } else if (cmd == 67) { // SYSTEM_CMD_TTY_KILL_FG
+            int tty_id = (int)arg2;
+            int pid = tty_get_foreground(tty_id);
+            if (pid <= 0) return 0;
+            process_t *target = process_get_by_pid((uint32_t)pid);
+            if (target) process_terminate(target);
+            tty_set_foreground(tty_id, 0);
             return 0;
+        } else if (cmd == 68) { 
+            int tty_id = (int)arg2;
+            process_kill_by_tty(tty_id);
+            tty_set_foreground(tty_id, 0);
+            return 0;
+        } else if (cmd == 69) { 
+            int tty_id = (int)arg2;
+            return tty_destroy(tty_id);
+        } else if (cmd == 64) { 
+            const char *user_path = (const char *)arg2;
+            const char *user_args = (const char *)arg3;
+            uint64_t flags = arg4;
+            int tty_id = (int)arg5;
+
+            if (!user_path) return -1;
+
+            char path_buf[256];
+            int pi = 0;
+            while (pi < 255 && user_path[pi]) {
+                path_buf[pi] = user_path[pi];
+                pi++;
+            }
+            path_buf[pi] = 0;
+
+            char args_buf[512];
+            const char *args_ptr = NULL;
+            if (user_args) {
+                int ai = 0;
+                while (ai < 511 && user_args[ai]) {
+                    args_buf[ai] = user_args[ai];
+                    ai++;
+                }
+                args_buf[ai] = 0;
+                args_ptr = args_buf;
+            }
+
+            bool terminal_proc = (flags & SPAWN_FLAG_TERMINAL) != 0;
+            int effective_tty = -1;
+            if (flags & SPAWN_FLAG_TTY_ID) effective_tty = tty_id;
+            else if (flags & SPAWN_FLAG_INHERIT_TTY) effective_tty = proc ? proc->tty_id : -1;
+
+            process_t *child = process_create_elf(path_buf, args_ptr, terminal_proc, effective_tty);
+            if (!child) return -1;
+            return (uint64_t)child->pid;
         } else if (cmd == SYSTEM_CMD_PARALLEL_RUN) {
             void (*user_fn)(void*) = (void (*)(void*))arg2;
             void **args = (void **)arg3;

src/sys/syscall.h

@@ -6,7 +6,6 @@
 
 #include <stdint.h>
 
-// Forward declarations
 typedef struct Window Window;
 typedef struct registers_t registers_t;
 
@@ -53,11 +52,8 @@ typedef struct {
 #define SYSTEM_CMD_SET_RAW_MODE 41
 #define SYSTEM_CMD_TCP_RECV_NB 42
 #define SYSTEM_CMD_YIELD 43
-#define SYSTEM_CMD_PROCESS_LIST 44
-#define SYSTEM_CMD_GET_CPU_MODEL 45
 #define SYSTEM_CMD_SLEEP 46
 #define SYSTEM_CMD_SET_RESOLUTION 47
-#define SYSTEM_CMD_GET_OS_INFO 49
 #define SYSTEM_CMD_PARALLEL_RUN 50
 
 void syscall_init(void);

src/sys/sysfs_init.c

@@ -0,0 +1,365 @@
+#include "kernel_subsystem.h"
+#include "smp.h"
+#include "pci.h"
+#include "memory_manager.h"
+#include "module_manager.h"
+#include "io.h"
+#include "core/kutils.h"
+#include "wm/graphics.h"
+#include "core/platform.h"
+#include "dev/disk.h"
+
+// --- Helper: itoa ---
+static void sys_itoa(int n, char *s) {
+    k_itoa(n, s);
+}
+
+// --- Graphics Implementation ---
+static int read_gfx_drm(char *buf, int size, int offset) {
+    char out[512];
+    k_memset(out, 0, 512);
+    k_strcpy(out, "Driver: Simple Framebuffer\n");
+    k_strcpy(out + k_strlen(out), "Resolution: ");
+    char s[32]; k_itoa(get_screen_width(), s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "x");
+    k_itoa(get_screen_height(), s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "\nDepth: ");
+    k_itoa(graphics_get_fb_bpp(), s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), " bpp\nAddress: 0x");
+    k_itoa_hex(graphics_get_fb_addr(), s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "\n");
+
+    int len = (int)k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- Memory Tracking Implementation ---
+static int read_mem_tracking(char *buf, int size, int offset) {
+    MemStats stats = memory_get_stats();
+    char out[1024];
+    k_memset(out, 0, 1024);
+    
+    k_strcpy(out, "--- Kernel Heap Tracking ---\n");
+    k_strcpy(out + k_strlen(out), "Allocated Blocks: ");
+    char s[32]; k_itoa(stats.allocated_blocks, s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "\nFragmentation: ");
+    k_itoa(stats.fragmentation_percent, s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "%\n");
+
+    int len = (int)k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- Module Implementation ---
+static int read_sys_modules(char *buf, int size, int offset) {
+    int count = module_manager_get_count();
+    char out[2048] = "Loaded Modules:\n";
+    
+    for (int i = 0; i < count; i++) {
+        kernel_module_t *mod = module_manager_get_index(i);
+        k_strcpy(out + k_strlen(out), "  - ");
+        k_strcpy(out + k_strlen(out), mod->name);
+        k_strcpy(out + k_strlen(out), " (");
+        char sz_s[16]; k_itoa(mod->size / 1024, sz_s);
+        k_strcpy(out + k_strlen(out), sz_s);
+        k_strcpy(out + k_strlen(out), " KB)\n");
+    }
+
+    int len = k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- PCI Bus Implementation ---
+static int read_pci_bus(char *buf, int size, int offset) {
+    pci_device_t devices[64];
+    int count = pci_enumerate_devices(devices, 64);
+    
+    char out[4096];
+    k_memset(out, 0, 4096);
+    k_strcpy(out, "PCI Bus Devices:\n");
+    for (int i = 0; i < count; i++) {
+        char line[128];
+        k_strcpy(line, " [");
+        char b_s[8]; k_itoa(devices[i].bus, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), ":");
+        k_itoa(devices[i].device, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), ":");
+        k_itoa(devices[i].function, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), "] Vendor:");
+        k_itoa_hex(devices[i].vendor_id, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), " Device:");
+        k_itoa_hex(devices[i].device_id, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), " Class:");
+        k_itoa_hex(devices[i].class_code, b_s);
+        k_strcpy(line + k_strlen(line), b_s);
+        k_strcpy(line + k_strlen(line), "\n");
+        
+        if (k_strlen(out) + k_strlen(line) < 4095) {
+            k_strcpy(out + k_strlen(out), line);
+        }
+    }
+
+    int len = (int)k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- CPU System Implementation ---
+static int read_cpu_info(char *buf, int size, int offset) {
+    char *out = (char*)kmalloc(16384);
+    if (!out) return 0;
+    out[0] = 0;
+    
+    char vendor[16];
+    char model[64];
+    char flags[1024];
+    cpu_info_t info;
+    
+    platform_get_cpu_vendor(vendor);
+    platform_get_cpu_model(model);
+    platform_get_cpu_info(&info);
+    platform_get_cpu_flags(flags);
+    
+    uint32_t cpu_count = smp_cpu_count();
+    
+    for (uint32_t i = 0; i < cpu_count; i++) {
+        char c_s[32];
+        
+        k_strcpy(out + k_strlen(out), "processor\t: ");
+        k_itoa(i, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "vendor_id\t: ");
+        k_strcpy(out + k_strlen(out), vendor);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "cpu family\t: ");
+        k_itoa(info.family, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "model\t\t: ");
+        k_itoa(info.model, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "model name\t: ");
+        k_strcpy(out + k_strlen(out), model);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "stepping\t: ");
+        k_itoa(info.stepping, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "microcode\t: 0x");
+        char hex[16];
+        int temp = info.microcode;
+        int hex_pos = 0;
+        for (int j = 7; j >= 0; j--) {
+            int digit = (temp >> (j * 4)) & 0xF;
+            hex[hex_pos++] = digit < 10 ? '0' + digit : 'a' + (digit - 10);
+        }
+        hex[hex_pos] = '\0';
+        k_strcpy(out + k_strlen(out), hex);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "cache size\t: ");
+        k_itoa(info.cache_size, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), " KB\n");
+        
+        k_strcpy(out + k_strlen(out), "physical id\t: 0\n");
+        k_strcpy(out + k_strlen(out), "siblings\t: ");
+        k_itoa(cpu_count, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "core id\t\t: ");
+        k_itoa(i, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "cpu cores\t: ");
+        k_itoa(cpu_count, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "apicid\t\t: ");
+        k_itoa(i, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "initial apicid\t: ");
+        k_itoa(i, c_s);
+        k_strcpy(out + k_strlen(out), c_s);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "fpu\t\t: yes\n");
+        k_strcpy(out + k_strlen(out), "fpu_exception\t: yes\n");
+        
+        k_strcpy(out + k_strlen(out), "cpuid level\t: 13\n");
+        
+        k_strcpy(out + k_strlen(out), "wp\t\t: yes\n");
+        
+        k_strcpy(out + k_strlen(out), "flags\t\t: ");
+        k_strcpy(out + k_strlen(out), flags);
+        k_strcpy(out + k_strlen(out), "\n");
+        
+        k_strcpy(out + k_strlen(out), "bugs\t\t: \n");
+        k_strcpy(out + k_strlen(out), "bogomips\t: 4800.00\n");
+        
+        if (i < cpu_count - 1) {
+            k_strcpy(out + k_strlen(out), "\n");
+        }
+    }
+    
+    int len = (int)k_strlen(out);
+    if (offset >= len) { kfree(out); return 0; }
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    kfree(out);
+    return to_copy;
+}
+
+// --- Devices Implementation ---
+static int read_sys_devices(char *buf, int size, int offset) {
+    char out[2048];
+    k_memset(out, 0, 2048);
+    
+    extern int disk_get_count(void);
+    extern Disk* disk_get_by_index(int index);
+    
+    int dcount = disk_get_count();
+    k_strcpy(out, "Block Devices:\n");
+    for (int i = 0; i < dcount; i++) {
+        Disk *d = disk_get_by_index(i);
+        if (d && !d->is_partition) {
+            k_strcpy(out + k_strlen(out), "  ");
+            k_strcpy(out + k_strlen(out), d->devname);
+            k_strcpy(out + k_strlen(out), " - ");
+            k_strcpy(out + k_strlen(out), d->label);
+            k_strcpy(out + k_strlen(out), "\n");
+        }
+    }
+    
+    k_strcpy(out + k_strlen(out), "\nCharacter Devices:\n");
+    k_strcpy(out + k_strlen(out), "  console - System console\n");
+    k_strcpy(out + k_strlen(out), "  tty - Terminal devices\n");
+    k_strcpy(out + k_strlen(out), "  psmouse - Mouse input\n");
+    k_strcpy(out + k_strlen(out), "  keyboard - Keyboard input\n");
+    k_strcpy(out + k_strlen(out), "  framebuffer - Framebuffer device\n");
+    
+    int len = (int)k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- Class Implementation ---
+static int read_sys_class(char *buf, int size, int offset) {
+    char out[1024];
+    k_memset(out, 0, 1024);
+    
+    k_strcpy(out, "Classes:\n");
+    k_strcpy(out + k_strlen(out), "  block - Block device class\n");
+    k_strcpy(out + k_strlen(out), "  input - Input device class\n");
+    k_strcpy(out + k_strlen(out), "  tty - TTY device class\n");
+    k_strcpy(out + k_strlen(out), "  sound - Sound device class\n");
+    k_strcpy(out + k_strlen(out), "  video - Video device class\n");
+    k_strcpy(out + k_strlen(out), "  net - Network device class\n");
+    
+    int len = (int)k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+// --- GPIO Implementation ---
+static int read_gpio_debug(char *buf, int size, int offset) {
+    uint8_t p64 = inb(0x64);
+    char out[64] = "Port 0x64 Status: ";
+    char s[16]; k_itoa(p64, s);
+    k_strcpy(out + k_strlen(out), s);
+    k_strcpy(out + k_strlen(out), "\n");
+    
+    int len = k_strlen(out);
+    if (offset >= len) return 0;
+    int to_copy = len - offset;
+    if (to_copy > size) to_copy = size;
+    k_memcpy(buf, out + offset, to_copy);
+    return to_copy;
+}
+
+void sysfs_init_subsystems(void) {
+    kernel_subsystem_t *kernel, *devices, *bus, *class, *debug, *mem_debug;
+    
+    subsystem_register("kernel", &kernel);
+    subsystem_register("devices", &devices);
+    subsystem_register("bus", &bus);
+    subsystem_register("class", &class);
+    subsystem_register("kernel/debug", &debug);
+    
+    // Devices info
+    subsystem_add_file(devices, "list", read_sys_devices, NULL);
+    
+    // Class info
+    subsystem_add_file(class, "list", read_sys_class, NULL);
+    
+    // CPU info
+    subsystem_add_file(kernel, "cpuinfo", read_cpu_info, NULL);
+    
+    // Bus info
+    kernel_subsystem_t *pci_bus;
+    subsystem_register("bus/pci", &pci_bus);
+    subsystem_add_file(pci_bus, "devices", read_pci_bus, NULL);
+
+    // Module info
+    kernel_subsystem_t *modules_sub;
+    subsystem_register("module", &modules_sub);
+    subsystem_add_file(modules_sub, "loaded", read_sys_modules, NULL);
+
+    // Memory Tracking
+    subsystem_register("kernel/debug/memory", &mem_debug);
+    subsystem_add_file(mem_debug, "tracking", read_mem_tracking, NULL);
+    
+    // Graphics DRM
+    kernel_subsystem_t *gfx_debug;
+    subsystem_register("kernel/debug/graphics", &gfx_debug);
+    subsystem_add_file(gfx_debug, "drm", read_gfx_drm, NULL);
+
+    // GPIO
+    subsystem_add_file(debug, "gpio", read_gpio_debug, NULL);
+}

src/sys/tty.c

@@ -0,0 +1,158 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include "tty.h"
+#include "spinlock.h"
+#include <stdbool.h>
+#include <stdint.h>
+
+#define TTY_MAX 8
+#define TTY_OUT_SIZE 16384
+#define TTY_IN_SIZE 4096
+
+typedef struct {
+    bool used;
+    int id;
+    char out_buf[TTY_OUT_SIZE];
+    uint32_t out_head;
+    uint32_t out_tail;
+    char in_buf[TTY_IN_SIZE];
+    uint32_t in_head;
+    uint32_t in_tail;
+    int fg_pid;
+    spinlock_t lock;
+} tty_t;
+
+static tty_t ttys[TTY_MAX] = {0};
+
+extern void mem_memset(void *dest, int val, size_t len);
+
+static tty_t *tty_get(int tty_id) {
+    if (tty_id < 0 || tty_id >= TTY_MAX) return NULL;
+    if (!ttys[tty_id].used) return NULL;
+    return &ttys[tty_id];
+}
+
+int tty_create(void) {
+    for (int i = 0; i < TTY_MAX; i++) {
+        if (!ttys[i].used) {
+            ttys[i].used = true;
+            ttys[i].id = i;
+            ttys[i].out_head = 0;
+            ttys[i].out_tail = 0;
+            ttys[i].in_head = 0;
+            ttys[i].in_tail = 0;
+            ttys[i].fg_pid = -1;
+            ttys[i].lock = SPINLOCK_INIT;
+            mem_memset(ttys[i].out_buf, 0, sizeof(ttys[i].out_buf));
+            mem_memset(ttys[i].in_buf, 0, sizeof(ttys[i].in_buf));
+            return i;
+        }
+    }
+    return -1;
+}
+
+int tty_destroy(int tty_id) {
+    if (tty_id < 0 || tty_id >= TTY_MAX) return -1;
+    tty_t *tty = &ttys[tty_id];
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    if (!tty->used) {
+        spinlock_release_irqrestore(&tty->lock, rflags);
+        return -1;
+    }
+
+    tty->used = false;
+    tty->id = -1;
+    tty->out_head = 0;
+    tty->out_tail = 0;
+    tty->in_head = 0;
+    tty->in_tail = 0;
+    tty->fg_pid = -1;
+    mem_memset(tty->out_buf, 0, sizeof(tty->out_buf));
+    mem_memset(tty->in_buf, 0, sizeof(tty->in_buf));
+
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return 0;
+}
+
+static int tty_write_ring(char *buf, uint32_t size, uint32_t *head, uint32_t *tail, const char *data, size_t len) {
+    int written = 0;
+    for (size_t i = 0; i < len; i++) {
+        uint32_t next = (*head + 1) % size;
+        if (next == *tail) break;
+        buf[*head] = data[i];
+        *head = next;
+        written++;
+    }
+    return written;
+}
+
+static int tty_read_ring(char *buf, uint32_t size, uint32_t *head, uint32_t *tail, char *out, size_t max_len) {
+    int read = 0;
+    while (*tail != *head && (size_t)read < max_len) {
+        out[read++] = buf[*tail];
+        *tail = (*tail + 1) % size;
+    }
+    return read;
+}
+
+int tty_write_output(int tty_id, const char *data, size_t len) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty || !data || len == 0) return 0;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    int written = tty_write_ring(tty->out_buf, TTY_OUT_SIZE, &tty->out_head, &tty->out_tail, data, len);
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return written;
+}
+
+int tty_read_output(int tty_id, char *buf, size_t max_len) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty || !buf || max_len == 0) return 0;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    int read = tty_read_ring(tty->out_buf, TTY_OUT_SIZE, &tty->out_head, &tty->out_tail, buf, max_len);
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return read;
+}
+
+int tty_write_input(int tty_id, const char *data, size_t len) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty || !data || len == 0) return 0;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    int written = tty_write_ring(tty->in_buf, TTY_IN_SIZE, &tty->in_head, &tty->in_tail, data, len);
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return written;
+}
+
+int tty_read_input(int tty_id, char *buf, size_t max_len) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty || !buf || max_len == 0) return 0;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    int read = tty_read_ring(tty->in_buf, TTY_IN_SIZE, &tty->in_head, &tty->in_tail, buf, max_len);
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return read;
+}
+
+int tty_set_foreground(int tty_id, int pid) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty) return -1;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    tty->fg_pid = pid;
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return 0;
+}
+
+int tty_get_foreground(int tty_id) {
+    tty_t *tty = tty_get(tty_id);
+    if (!tty) return -1;
+
+    uint64_t rflags = spinlock_acquire_irqsave(&tty->lock);
+    int pid = tty->fg_pid;
+    spinlock_release_irqrestore(&tty->lock, rflags);
+    return pid;
+}

src/sys/tty.h

@@ -0,0 +1,18 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#ifndef TTY_H
+#define TTY_H
+
+#include <stddef.h>
+
+int tty_create(void);
+int tty_destroy(int tty_id);
+int tty_write_output(int tty_id, const char *data, size_t len);
+int tty_read_output(int tty_id, char *buf, size_t max_len);
+int tty_write_input(int tty_id, const char *data, size_t len);
+int tty_read_input(int tty_id, char *buf, size_t max_len);
+int tty_set_foreground(int tty_id, int pid);
+int tty_get_foreground(int tty_id);
+
+#endif

src/userland/cli/cat.c

@@ -1,32 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-int main(int argc, char **argv) {
-    uint32_t error_color = (uint32_t)sys_get_shell_config("error_color");
-    uint32_t default_color = (uint32_t)sys_get_shell_config("default_text_color");
-
-    if (argc < 2) {
-        printf("Usage: cat <filename>\n");
-        return 1;
-    }
-    
-    int fd = sys_open(argv[1], "r");
-    if (fd < 0) {
-        sys_set_text_color(error_color);
-        printf("Error: Cannot open %s\n", argv[1]);
-        sys_set_text_color(default_color);
-        return 1;
-    }
-    
-    char buffer[4096];
-    int bytes;
-    while ((bytes = sys_read(fd, buffer, sizeof(buffer))) > 0) {
-        sys_write(1, buffer, bytes);
-    }
-    
-    sys_close(fd);
-    return 0;
-}

src/userland/cli/cp.c

@@ -1,166 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-typedef int bool;
-#define true 1
-#define false 0
-
-void combine_path(char *dest, const char *path1, const char *path2) {
-    int i = 0;
-    while (path1[i]) {
-        dest[i] = path1[i];
-        i++;
-    }
-    if (i > 0 && dest[i-1] != '/') {
-        dest[i++] = '/';
-    }
-    int j = 0;
-    while (path2[j]) {
-        dest[i++] = path2[j++];
-    }
-    dest[i] = 0;
-}
-
-const char* get_basename(const char *path) {
-    const char *last_slash = NULL;
-    int len = 0;
-    while (path[len]) {
-        if (path[len] == '/') last_slash = path + len;
-        len++;
-    }
-    
-    if (!last_slash) return path;
-    
-    // If it ends with a slash, skip it and find the previous one
-    if (last_slash[1] == '\0') {
-        if (len <= 1) return path; // root "/"
-        int i = len - 2;
-        while (i >= 0 && path[i] != '/') i--;
-        if (i < 0) return path; 
-        return path + i + 1;
-    }
-    
-    return last_slash + 1;
-}
-
-void copy_recursive(const char *src, const char *dst) {
-    FAT32_FileInfo info;
-    if (sys_get_file_info(src, &info) < 0) {
-        printf("Error: Cannot get info for %s\n", src);
-        return;
-    }
-
-    if (info.is_directory) {
-        if (sys_mkdir(dst) < 0) {
-            // Might already exist
-        }
-        
-        FAT32_FileInfo entries[64];
-        int count = sys_list(src, entries, 64);
-        for (int i = 0; i < count; i++) {
-            if (strcmp(entries[i].name, ".") == 0 || strcmp(entries[i].name, "..") == 0) continue;
-            
-            char sub_src[512], sub_dst[512];
-            combine_path(sub_src, src, entries[i].name);
-            combine_path(sub_dst, dst, entries[i].name);
-            copy_recursive(sub_src, sub_dst);
-        }
-    } else {
-        int fd_in = sys_open(src, "r");
-        if (fd_in < 0) {
-            printf("Error: Cannot open source %s\n", src);
-            return;
-        }
-        int fd_out = sys_open(dst, "w");
-        if (fd_out < 0) {
-            printf("Error: Cannot create destination %s\n", dst);
-            sys_close(fd_in);
-            return;
-        }
-        char buffer[4096];
-        int bytes;
-        while ((bytes = sys_read(fd_in, buffer, sizeof(buffer))) > 0) {
-            sys_write_fs(fd_out, buffer, bytes);
-        }
-        sys_close(fd_in);
-        sys_close(fd_out);
-    }
-}
-
-int main(int argc, char **argv) {
-    bool recursive = false;
-    char *src_path = NULL;
-    char *dst_path = NULL;
-
-    for (int i = 1; i < argc; i++) {
-        if (strcmp(argv[i], "-r") == 0) {
-            recursive = true;
-        } else if (!src_path) {
-            src_path = argv[i];
-        } else if (!dst_path) {
-            dst_path = argv[i];
-        }
-    }
-
-    if (!src_path || !dst_path) {
-        printf("Usage: cp [-r] <source> <dest>\n");
-        return 1;
-    }
-    
-    FAT32_FileInfo info_src;
-    if (sys_get_file_info(src_path, &info_src) < 0) {
-        printf("Error: Source %s does not exist\n", src_path);
-        return 1;
-    }
-
-    if (info_src.is_directory && !recursive) {
-        printf("Error: %s is a directory (use -r to copy recursively)\n", src_path);
-        return 1;
-    }
-
-    char actual_dst[512];
-    FAT32_FileInfo info_dst;
-    if (sys_get_file_info(dst_path, &info_dst) == 0 && info_dst.is_directory) {
-        // If destination is a directory, copy INTO it
-        const char *base = get_basename(src_path);
-        // Clean up trailing slash from basename if any (get_basename handles it mostly)
-        char clean_base[256];
-        int k = 0;
-        while (base[k] && base[k] != '/') {
-            clean_base[k] = base[k];
-            k++;
-        }
-        clean_base[k] = 0;
-        combine_path(actual_dst, dst_path, clean_base);
-    } else {
-        strcpy(actual_dst, dst_path);
-    }
-
-    if (recursive) {
-        copy_recursive(src_path, actual_dst);
-    } else {
-        int fd_in = sys_open(src_path, "r");
-        if (fd_in < 0) {
-            printf("Error: Cannot open source %s\n", src_path);
-            return 1;
-        }
-        int fd_out = sys_open(actual_dst, "w");
-        if (fd_out < 0) {
-            printf("Error: Cannot create destination %s\n", actual_dst);
-            sys_close(fd_in);
-            return 1;
-        }
-        char buffer[4096];
-        int bytes;
-        while ((bytes = sys_read(fd_in, buffer, sizeof(buffer))) > 0) {
-            sys_write_fs(fd_out, buffer, bytes);
-        }
-        sys_close(fd_in);
-        sys_close(fd_out);
-    }
-    
-    return 0;
-}

src/userland/cli/ls.c

@@ -1,66 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-int main(int argc, char **argv) {
-    uint64_t dir_color = sys_get_shell_config("dir_color");
-    uint64_t file_color = sys_get_shell_config("file_color");
-    uint64_t size_color = sys_get_shell_config("size_color");
-    uint64_t error_color = sys_get_shell_config("error_color");
-    uint64_t default_color = sys_get_shell_config("default_text_color");
-
-    char path[256];
-    if (argc > 1) {
-        strcpy(path, argv[1]);
-    } else {
-        if (!sys_getcwd(path, sizeof(path))) {
-            strcpy(path, "/");
-        }
-    }
-    
-    FAT32_FileInfo info;
-    if (sys_get_file_info(path, &info) < 0) {
-        sys_set_text_color(error_color);
-        printf("Error: Path '%s' does not exist\n", path);
-        sys_set_text_color(default_color);
-        return 1;
-    }
-
-    if (!info.is_directory) {
-        sys_set_text_color(file_color);
-        printf("[FILE] %s", info.name);
-        sys_set_text_color(size_color);
-        printf(" (%d bytes)\n", info.size);
-        sys_set_text_color(default_color);
-        printf("\nTotal: 1 items\n");
-        return 0;
-    }
-    
-    FAT32_FileInfo entries[128];
-    int count = sys_list(path, entries, 128);
-    
-    if (count < 0) {
-        sys_set_text_color(error_color);
-        printf("Error: Cannot list directory %s\n", path);
-        sys_set_text_color(default_color);
-        return 1;
-    }
-    
-    for (int i = 0; i < count; i++) {
-        if (entries[i].is_directory) {
-            sys_set_text_color(dir_color);
-            printf("[DIR]  %s\n", entries[i].name);
-        } else {
-            sys_set_text_color(file_color);
-            printf("[FILE] %s", entries[i].name);
-            sys_set_text_color(size_color);
-            printf(" (%d bytes)\n", entries[i].size);
-        }
-    }
-    
-    sys_set_text_color(default_color);
-    printf("\nTotal: %d items\n", count);
-    return 0;
-}

src/userland/cli/man.c

@@ -14,7 +14,7 @@ int main(int argc, char **argv) {
     printf("Manual for: %s\n", argv[1]);
     printf("---------------------------\n");
     
-    strcpy(path, "A:/Library/man/");
+    strcpy(path, "/Library/man/");
     strcat(path, argv[1]);
     strcat(path, ".txt");
     

src/userland/cli/mkdir.c

@@ -1,28 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-int main(int argc, char **argv) {
-    uint32_t error_color = (uint32_t)sys_get_shell_config("error_color");
-    uint32_t success_color = (uint32_t)sys_get_shell_config("success_color");
-    uint32_t default_color = (uint32_t)sys_get_shell_config("default_text_color");
-
-    if (argc < 2) {
-        printf("Usage: mkdir <dirname>\n");
-        return 1;
-    }
-    
-    if (sys_mkdir(argv[1]) == 0) {
-        sys_set_text_color(success_color);
-        printf("Created directory: %s\n", argv[1]);
-    } else {
-        sys_set_text_color(error_color);
-        printf("Error: Cannot create directory %s\n", argv[1]);
-        sys_set_text_color(default_color);
-        return 1;
-    }
-    sys_set_text_color(default_color);
-    return 0;
-}

src/userland/cli/mv.c

@@ -1,128 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-void combine_path(char *dest, const char *path1, const char *path2) {
-    int i = 0;
-    while (path1[i]) {
-        dest[i] = path1[i];
-        i++;
-    }
-    if (i > 0 && dest[i-1] != '/') {
-        dest[i++] = '/';
-    }
-    int j = 0;
-    while (path2[j]) {
-        dest[i++] = path2[j++];
-    }
-    dest[i] = 0;
-}
-
-const char* get_basename(const char *path) {
-    const char *last_slash = NULL;
-    int len = 0;
-    while (path[len]) {
-        if (path[len] == '/') last_slash = path + len;
-        len++;
-    }
-    
-    if (!last_slash) return path;
-    
-    if (last_slash[1] == '\0') {
-        if (len <= 1) return path;
-        int i = len - 2;
-        while (i >= 0 && path[i] != '/') i--;
-        if (i < 0) return path; 
-        return path + i + 1;
-    }
-    
-    return last_slash + 1;
-}
-
-void copy_recursive(const char *src, const char *dst) {
-    FAT32_FileInfo info;
-    if (sys_get_file_info(src, &info) < 0) return;
-
-    if (info.is_directory) {
-        sys_mkdir(dst);
-        FAT32_FileInfo entries[64];
-        int count = sys_list(src, entries, 64);
-        for (int i = 0; i < count; i++) {
-            if (strcmp(entries[i].name, ".") == 0 || strcmp(entries[i].name, "..") == 0) continue;
-            char sub_src[512], sub_dst[512];
-            combine_path(sub_src, src, entries[i].name);
-            combine_path(sub_dst, dst, entries[i].name);
-            copy_recursive(sub_src, sub_dst);
-        }
-    } else {
-        int fd_in = sys_open(src, "r");
-        if (fd_in < 0) return;
-        int fd_out = sys_open(dst, "w");
-        if (fd_out < 0) { sys_close(fd_in); return; }
-        char buffer[4096];
-        int bytes;
-        while ((bytes = sys_read(fd_in, buffer, sizeof(buffer))) > 0) {
-            sys_write_fs(fd_out, buffer, bytes);
-        }
-        sys_close(fd_in);
-        sys_close(fd_out);
-    }
-}
-
-void delete_recursive(const char *path) {
-    FAT32_FileInfo info;
-    if (sys_get_file_info(path, &info) < 0) return;
-
-    if (info.is_directory) {
-        FAT32_FileInfo entries[64];
-        int count = sys_list(path, entries, 64);
-        for (int i = 0; i < count; i++) {
-            if (strcmp(entries[i].name, ".") == 0 || strcmp(entries[i].name, "..") == 0) continue;
-            char sub_path[512];
-            combine_path(sub_path, path, entries[i].name);
-            delete_recursive(sub_path);
-        }
-        sys_delete(path);
-    } else {
-        sys_delete(path);
-    }
-}
-
-int main(int argc, char **argv) {
-    if (argc < 3) {
-        printf("Usage: mv <source> <dest>\n");
-        return 1;
-    }
-    
-    char *src_path = argv[1];
-    char *dst_path = argv[2];
-
-    FAT32_FileInfo info_src;
-    if (sys_get_file_info(src_path, &info_src) < 0) {
-        printf("Error: Cannot open source %s\n", src_path);
-        return 1;
-    }
-
-    char actual_dst[512];
-    FAT32_FileInfo info_dst;
-    if (sys_get_file_info(dst_path, &info_dst) == 0 && info_dst.is_directory) {
-        const char *base = get_basename(src_path);
-        char clean_base[256];
-        int k = 0;
-        while (base[k] && base[k] != '/') {
-            clean_base[k] = base[k];
-            k++;
-        }
-        clean_base[k] = 0;
-        combine_path(actual_dst, dst_path, clean_base);
-    } else {
-        strcpy(actual_dst, dst_path);
-    }
-
-    copy_recursive(src_path, actual_dst);
-    delete_recursive(src_path);
-    
-    return 0;
-}

src/userland/cli/rm.c

@@ -1,29 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-int main(int argc, char **argv) {
-    uint32_t error_color = (uint32_t)sys_get_shell_config("error_color");
-    uint32_t success_color = (uint32_t)sys_get_shell_config("success_color");
-    uint32_t default_color = (uint32_t)sys_get_shell_config("default_text_color");
-
-    if (argc < 2) {
-        printf("Usage: rm <path>\n");
-        return 1;
-    }
-    
-    // Simple rm (no recursive support yet for simplicity, but can be added)
-    if (sys_delete(argv[1]) == 0) {
-        sys_set_text_color(success_color);
-        printf("Deleted: %s\n", argv[1]);
-    } else {
-        sys_set_text_color(error_color);
-        printf("Error: Cannot delete %s\n", argv[1]);
-        sys_set_text_color(default_color);
-        return 1;
-    }
-    sys_set_text_color(default_color);
-    return 0;
-}

src/userland/cli/sysfetch.c

@@ -9,15 +9,6 @@
 #define MAX_ASCII_WIDTH 80
 #define MAX_INFO_LINES 10
 
-static char* strchr(const char *s, int c) {
-    while (*s != (char)c) {
-        if (!*s++) {
-            return 0;
-        }
-    }
-    return (char *)s;
-}
-
 static char* strncpy(char *dest, const char *src, size_t n) {
     size_t i;
     for (i = 0; i < n && src[i] != '\0'; i++) dest[i] = src[i];
@@ -117,7 +108,7 @@ static char* trim(char *str) {
 }
 
 static void set_config_defaults() {
-    strcpy(config.ascii_art_file, "A:/Library/art/boredos.txt");
+    strcpy(config.ascii_art_file, "/Library/art/boredos.txt");
     strcpy(config.user_host_string, "root@boredos");
     strcpy(config.separator, "------------");
     strcpy(config.os_label, "OS");
@@ -160,7 +151,7 @@ static void parse_config(char* buffer) {
 
 static void load_config() {
     set_config_defaults();
-    int fd = sys_open("A:/Library/conf/sysfetch.cfg", "r");
+    int fd = sys_open("/Library/conf/sysfetch.cfg", "r");
     if (fd < 0) return;
 
     char *buffer = malloc(4096);
@@ -237,52 +228,82 @@ int main(int argc, char **argv) {
     if (config.separator[0]) {
         strcpy(info_lines[info_line_count++], config.separator);
     }
-    os_info_t os_info;
-    sys_get_os_info(&os_info);
+    // Helper for proc parsing
+    auto int find_v(const char *b, const char *k) {
+        char *p = (char*)b; int kl = strlen(k);
+        while (*p) {
+            if (memcmp(p, k, kl) == 0 && p[kl] == ':') {
+                p += kl + 1; while (*p == ' ') p++; return atoi(p);
+            }
+            while (*p && *p != '\n') p++; if (*p == '\n') p++;
+        }
+        return 0;
+    }
+
+    int fd_v = sys_open("/proc/version", "r");
+    char v_buf[512];
+    if (fd_v >= 0) {
+        int b = sys_read(fd_v, v_buf, 511);
+        v_buf[b] = 0;
+        sys_close(fd_v);
+    } else strcpy(v_buf, "Unknown");
 
     if (config.os_label[0]) {
         strcpy(info_lines[info_line_count], config.os_label);
         strcat(info_lines[info_line_count], ": ");
-        strcat(info_lines[info_line_count], os_info.os_name);
-        strcat(info_lines[info_line_count], " V");
-        strcat(info_lines[info_line_count], os_info.os_version);
-        strcat(info_lines[info_line_count], " '");
-        strcat(info_lines[info_line_count], os_info.os_codename);
-        strcat(info_lines[info_line_count], "'");
+        // Parse "BoredOS [codename] Version X.Y.Z"
+        strcat(info_lines[info_line_count], v_buf);
+        // Truncate at newline
+        char *nl = strchr(info_lines[info_line_count], '\n');
+        if (nl) *nl = 0;
         info_line_count++;
     }
     if (config.kernel_label[0]) {
         strcpy(info_lines[info_line_count], config.kernel_label);
         strcat(info_lines[info_line_count], ": ");
-        strcat(info_lines[info_line_count], os_info.kernel_name);
-        strcat(info_lines[info_line_count], " V");
-        strcat(info_lines[info_line_count], os_info.kernel_version);
-        strcat(info_lines[info_line_count], " ");
-        strcat(info_lines[info_line_count], os_info.build_arch);
+        char *kstart = strchr(v_buf, '\n');
+        if (kstart) {
+            strcat(info_lines[info_line_count], kstart + 1);
+            char *knext = strchr(info_lines[info_line_count], '\n');
+            if (knext) *knext = 0;
+        } else strcat(info_lines[info_line_count], "Unknown");
         info_line_count++;
     }
     if (config.uptime_label[0]) {
-        uint64_t ticks = sys_system(16, 0, 0, 0, 0);
-        int minutes = ticks / 3600; // 60Hz timer
-        strcpy(info_lines[info_line_count], config.uptime_label);
-        strcat(info_lines[info_line_count], ": ");
-        itoa(minutes, temp_buf);
-        strcat(info_lines[info_line_count], temp_buf);
-        strcat(info_lines[info_line_count++], " mins");
+        int fd_u = sys_open("/proc/uptime", "r");
+        if (fd_u >= 0) {
+            char u_buf[64];
+            int b = sys_read(fd_u, u_buf, 63);
+            u_buf[b] = 0;
+            sys_close(fd_u);
+            int sec = atoi(u_buf);
+            int mins = sec / 60;
+            strcpy(info_lines[info_line_count], config.uptime_label);
+            strcat(info_lines[info_line_count], ": ");
+            itoa(mins, temp_buf);
+            strcat(info_lines[info_line_count], temp_buf);
+            strcat(info_lines[info_line_count++], " mins");
+        }
     }
     if (config.shell_label[0]) {
         strcpy(info_lines[info_line_count], config.shell_label);
         strcat(info_lines[info_line_count++], ": bsh");
     }
     if (config.memory_label[0]) {
-        uint64_t mem[2];
-        if (sys_system(15, (uint64_t)mem, 0, 0, 0) == 0) {
+        int fd_m = sys_open("/proc/meminfo", "r");
+        if (fd_m >= 0) {
+            char m_buf[512];
+            int b = sys_read(fd_m, m_buf, 511);
+            m_buf[b] = 0;
+            sys_close(fd_m);
+            int total = find_v(m_buf, "MemTotal");
+            int used = find_v(m_buf, "MemUsed");
             strcpy(info_lines[info_line_count], config.memory_label);
             strcat(info_lines[info_line_count], ": ");
-            itoa((int)(mem[1] / 1024 / 1024), temp_buf);
+            itoa(used / 1024, temp_buf);
             strcat(info_lines[info_line_count], temp_buf);
             strcat(info_lines[info_line_count], "MiB / ");
-            itoa((int)(mem[0] / 1024 / 1024), temp_buf);
+            itoa(total / 1024, temp_buf);
             strcat(info_lines[info_line_count], temp_buf);
             strcat(info_lines[info_line_count++], "MiB");
         }

src/userland/cli/touch.c

@@ -1,27 +0,0 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
-// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
-// This header needs to maintain in any file it is present in, as per the GPL license terms.
-#include <stdlib.h>
-#include <syscall.h>
-
-int main(int argc, char **argv) {
-    if (argc < 2) {
-        printf("Usage: touch <filename>\n");
-        return 1;
-    }
-    
-    // Check if file already exists
-    if (sys_exists(argv[1])) {
-        // Just return success if it exists (simplification)
-        return 0;
-    }
-    
-    int fd = sys_open(argv[1], "w");
-    if (fd < 0) {
-        printf("Error: Cannot create %s\n", argv[1]);
-        return 1;
-    }
-    
-    sys_close(fd);
-    return 0;
-}

src/userland/cli/uname.c

@@ -0,0 +1,236 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include <stdlib.h>
+#include <syscall.h>
+#include <stdbool.h>
+
+static void str_copy(char *dst, const char *src, int max_len) {
+    int i = 0;
+    if (!dst || max_len <= 0) return;
+    if (!src) { dst[0] = 0; return; }
+    while (i < max_len - 1 && src[i]) {
+        dst[i] = src[i];
+        i++;
+    }
+    dst[i] = 0;
+}
+
+static bool starts_with(const char *s, const char *prefix) {
+    if (!s || !prefix) return false;
+    while (*prefix) {
+        if (*s != *prefix) return false;
+        s++; prefix++;
+    }
+    return true;
+}
+
+static void trim_end(char *s) {
+    int len;
+    if (!s) return;
+    len = (int)strlen(s);
+    while (len > 0) {
+        char c = s[len - 1];
+        if (c == '\n' || c == '\r' || c == ' ' || c == '\t') {
+            s[len - 1] = 0;
+            len--;
+        } else {
+            break;
+        }
+    }
+}
+
+static const char *trim_start(const char *s) {
+    if (!s) return "";
+    while (*s == ' ' || *s == '\t') s++;
+    return s;
+}
+
+static void copy_range(char *dst, const char *start, int len, int max_len) {
+    int i;
+    if (!dst || max_len <= 0) return;
+    if (!start || len <= 0) { dst[0] = 0; return; }
+    if (len > max_len - 1) len = max_len - 1;
+    for (i = 0; i < len; i++) dst[i] = start[i];
+    dst[len] = 0;
+    trim_end(dst);
+}
+
+static void copy_line(const char *start, char *out, int out_len) {
+    int i = 0;
+    if (!start || !out || out_len <= 0) return;
+    while (start[i] && start[i] != '\n' && start[i] != '\r' && i < out_len - 1) {
+        out[i] = start[i];
+        i++;
+    }
+    out[i] = 0;
+    trim_end(out);
+}
+
+static int read_file_to_buf(const char *path, char *buf, int max_len) {
+    int fd;
+    int bytes;
+    if (!buf || max_len <= 0) return -1;
+    fd = sys_open(path, "r");
+    if (fd < 0) return -1;
+    bytes = sys_read(fd, buf, max_len - 1);
+    sys_close(fd);
+    if (bytes < 0) return -1;
+    buf[bytes] = 0;
+    return bytes;
+}
+
+static void parse_version_info(const char *vbuf,
+                               char *os_name, int os_name_len,
+                               char *kernel_name, int kernel_name_len,
+                               char *kernel_ver, int kernel_ver_len,
+                               char *build_str, int build_str_len) {
+    char line1[256] = {0};
+    char line2[256] = {0};
+    char line3[256] = {0};
+    const char *l2;
+    const char *l3;
+    const char *end;
+
+    if (!vbuf || !vbuf[0]) return;
+
+    copy_line(vbuf, line1, sizeof(line1));
+    l2 = strchr(vbuf, '\n');
+    if (l2) {
+        l2++;
+        copy_line(l2, line2, sizeof(line2));
+        l3 = strchr(l2, '\n');
+        if (l3) {
+            l3++;
+            copy_line(l3, line3, sizeof(line3));
+        }
+    }
+
+    if (line1[0]) {
+        end = strstr(line1, " [");
+        if (!end) end = strstr(line1, " Version");
+        if (!end) end = line1 + (int)strlen(line1);
+        copy_range(os_name, line1, (int)(end - line1), os_name_len);
+    }
+
+    if (line2[0]) {
+        const char *p = line2;
+        if (starts_with(p, "Kernel:")) {
+            p += 7;
+            if (*p == ' ') p++;
+        }
+        p = trim_start(p);
+        if (*p) {
+            const char *t = p;
+            while (*t && *t != ' ') t++;
+            copy_range(kernel_name, p, (int)(t - p), kernel_name_len);
+            while (*t == ' ') t++;
+            if (*t) copy_range(kernel_ver, t, (int)strlen(t), kernel_ver_len);
+        }
+    }
+
+    if (line3[0]) {
+        const char *p = line3;
+        if (starts_with(p, "Build:")) {
+            p += 6;
+            if (*p == ' ') p++;
+        }
+        p = trim_start(p);
+        if (*p) copy_range(build_str, p, (int)strlen(p), build_str_len);
+    }
+}
+
+static void parse_cpu_model(const char *buf, char *out, int out_len) {
+    const char *p;
+    const char *colon;
+    const char *end;
+    if (!buf || !out || out_len <= 0) return;
+    p = strstr(buf, "model name");
+    if (!p) return;
+    colon = strchr(p, ':');
+    if (!colon) return;
+    colon++;
+    colon = trim_start(colon);
+    end = colon;
+    while (*end && *end != '\n' && *end != '\r') end++;
+    copy_range(out, colon, (int)(end - colon), out_len);
+}
+
+static void print_usage(void) {
+    printf("Usage: uname [-amnoprsv]\n");
+}
+
+static void print_field(const char *value, bool *first) {
+    if (!value || !value[0]) value = "Unknown";
+    if (!*first) printf(" ");
+    printf("%s", value);
+    *first = false;
+}
+
+int main(int argc, char **argv) {
+    bool want_s = false;
+    bool want_n = false;
+    bool want_r = false;
+    bool want_v = false;
+    bool want_m = false;
+    bool want_p = false;
+    bool want_o = false;
+    bool any_flags = false;
+
+    for (int i = 1; i < argc; i++) {
+        const char *arg = argv[i];
+        if (!arg || arg[0] != '-' || arg[1] == 0) {
+            print_usage();
+            return 1;
+        }
+        for (int j = 1; arg[j]; j++) {
+            char c = arg[j];
+            if (c == 'a') {
+                want_s = want_n = want_r = want_v = want_m = want_p = want_o = true;
+                any_flags = true;
+            } else if (c == 's') { want_s = true; any_flags = true; }
+            else if (c == 'n') { want_n = true; any_flags = true; }
+            else if (c == 'r') { want_r = true; any_flags = true; }
+            else if (c == 'v') { want_v = true; any_flags = true; }
+            else if (c == 'm') { want_m = true; any_flags = true; }
+            else if (c == 'p') { want_p = true; any_flags = true; }
+            else if (c == 'o') { want_o = true; any_flags = true; }
+            else { print_usage(); return 1; }
+        }
+    }
+
+    if (!any_flags) want_s = true;
+
+    char vbuf[1024] = {0};
+    char cpubuf[2048] = {0};
+    char os_name[64] = "Unknown";
+    char kernel_name[64] = "Unknown";
+    char kernel_ver[64] = "Unknown";
+    char build_str[64] = "Unknown";
+    char processor[128] = {0};
+
+    if (read_file_to_buf("/proc/version", vbuf, sizeof(vbuf)) > 0) {
+        parse_version_info(vbuf, os_name, sizeof(os_name), kernel_name, sizeof(kernel_name),
+                           kernel_ver, sizeof(kernel_ver), build_str, sizeof(build_str));
+    }
+
+    if (read_file_to_buf("/proc/cpuinfo", cpubuf, sizeof(cpubuf)) > 0) {
+        parse_cpu_model(cpubuf, processor, sizeof(processor));
+    }
+
+    const char *nodename = "boredos";
+    const char *machine = "x86_64";
+    if (!processor[0]) str_copy(processor, machine, sizeof(processor));
+
+    bool first = true;
+    if (want_s) print_field(kernel_name, &first);
+    if (want_n) print_field(nodename, &first);
+    if (want_r) print_field(kernel_ver, &first);
+    if (want_v) print_field(build_str, &first);
+    if (want_m) print_field(machine, &first);
+    if (want_p) print_field(processor, &first);
+    if (want_o) print_field(os_name, &first);
+    printf("\n");
+
+    return 0;
+}

src/userland/games/2048.c

@@ -0,0 +1,519 @@
+#include "libc/syscall.h"
+#include "libc/libui.h"
+#include "libc/stdlib.h"
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/*
+@Lluciocc
+2048 for BoredOS
+Controls:
+- WASD keys or arrow keys or numpad keys to move
+- R key to restart
+*/
+
+#define WINDOW_W 300
+#define WINDOW_H 430
+
+#define BOARD_SIZE 4
+#define TILE_SIZE 56
+#define TILE_GAP 8
+#define BOARD_X 18
+#define BOARD_Y 96
+
+#define BTN_W 54
+#define BTN_H 30
+
+#define COLOR_BG            0xFF121212
+#define COLOR_PANEL         0xFF202020
+#define COLOR_PANEL_2       0xFF2A2A2A
+#define COLOR_BORDER        0xFF3D3D3D
+#define COLOR_TEXT          0xFFF2F2F2
+#define COLOR_TEXT_DARK     0xFF202020
+#define COLOR_MUTED         0xFFBBBBBB
+#define COLOR_ACCENT        0xFF6EA8FE
+#define COLOR_GREEN         0xFF69DB7C
+#define COLOR_RED           0xFFFF6B6B
+#define COLOR_EMPTY_TILE    0xFF2D2D2D
+
+static int board[BOARD_SIZE][BOARD_SIZE];
+static int score = 0;
+static int best_tile = 0;
+static bool game_over = false;
+static bool game_won = false;
+static bool has_moved_last_turn = false;
+
+static uint32_t random_seed = 0xC0FFEE12u;
+
+static uint32_t random_next(void) {
+    random_seed = random_seed * 1664525u + 1013904223u;
+    return random_seed;
+}
+
+static int max_int(int a, int b) {
+    return (a > b) ? a : b;
+}
+
+static void clear_board(void) {
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            board[y][x] = 0;
+        }
+    }
+}
+
+static int count_empty_cells(void) {
+    int count = 0;
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            if (board[y][x] == 0) {
+                count++;
+            }
+        }
+    }
+    return count;
+}
+
+static void add_random_tile(void) {
+    int empty_count = count_empty_cells();
+    if (empty_count <= 0) {
+        return;
+    }
+
+    int pick = (int)(random_next() % (uint32_t)empty_count);
+
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            if (board[y][x] == 0) {
+                if (pick == 0) {
+                    /* 90% chance of a 2, 10% chance of a 4 */
+                    board[y][x] = ((random_next() % 10u) == 0u) ? 4 : 2;
+                    best_tile = max_int(best_tile, board[y][x]);
+                    return;
+                }
+                pick--;
+            }
+        }
+    }
+}
+
+static bool can_make_any_move(void) {
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            if (board[y][x] == 0) {
+                return true;
+            }
+            if (x + 1 < BOARD_SIZE && board[y][x] == board[y][x + 1]) {
+                return true;
+            }
+            if (y + 1 < BOARD_SIZE && board[y][x] == board[y + 1][x]) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+static void refresh_end_state(void) {
+    game_won = false;
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            if (board[y][x] >= 2048) {
+                game_won = true;
+            }
+            if (board[y][x] > best_tile) {
+                best_tile = board[y][x];
+            }
+        }
+    }
+
+    game_over = !can_make_any_move();
+}
+
+static void init_game(void) {
+    clear_board();
+    score = 0;
+    best_tile = 0;
+    game_over = false;
+    game_won = false;
+    has_moved_last_turn = false;
+
+    add_random_tile();
+    add_random_tile();
+    refresh_end_state();
+}
+
+static void copy_line_from_row(int row, int out[BOARD_SIZE]) {
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        out[i] = board[row][i];
+    }
+}
+
+static void copy_line_to_row(int row, const int in[BOARD_SIZE]) {
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        board[row][i] = in[i];
+    }
+}
+
+static void copy_line_from_col(int col, int out[BOARD_SIZE]) {
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        out[i] = board[i][col];
+    }
+}
+
+static void copy_line_to_col(int col, const int in[BOARD_SIZE]) {
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        board[i][col] = in[i];
+    }
+}
+
+static void reverse_line(int line[BOARD_SIZE]) {
+    for (int i = 0; i < BOARD_SIZE / 2; i++) {
+        int tmp = line[i];
+        line[i] = line[BOARD_SIZE - 1 - i];
+        line[BOARD_SIZE - 1 - i] = tmp;
+    }
+}
+
+static bool slide_and_merge_line_left(int line[BOARD_SIZE]) {
+    int compact[BOARD_SIZE];
+    int merged[BOARD_SIZE];
+    int compact_len = 0;
+    int write_index = 0;
+    bool changed = false;
+
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        merged[i] = 0;
+        if (line[i] != 0) {
+            compact[compact_len++] = line[i];
+        }
+    }
+
+    for (int i = 0; i < compact_len; i++) {
+        if (i + 1 < compact_len && compact[i] == compact[i + 1]) {
+            int value = compact[i] * 2;
+            merged[write_index++] = value;
+            score += value;
+            best_tile = max_int(best_tile, value);
+            i++; /* Skip the second tile, it has been merged. */
+        } else {
+            merged[write_index++] = compact[i];
+        }
+    }
+
+    while (write_index < BOARD_SIZE) {
+        merged[write_index++] = 0;
+    }
+
+    for (int i = 0; i < BOARD_SIZE; i++) {
+        if (line[i] != merged[i]) {
+            changed = true;
+        }
+        line[i] = merged[i];
+    }
+
+    return changed;
+}
+
+typedef enum {
+    MOVE_LEFT,
+    MOVE_RIGHT,
+    MOVE_UP,
+    MOVE_DOWN
+} move_dir_t;
+
+static bool apply_move(move_dir_t dir) {
+    bool changed = false;
+
+    if (game_over) {
+        return false;
+    }
+
+    if (dir == MOVE_LEFT || dir == MOVE_RIGHT) {
+        for (int row = 0; row < BOARD_SIZE; row++) {
+            int line[BOARD_SIZE];
+            copy_line_from_row(row, line);
+
+            if (dir == MOVE_RIGHT) {
+                reverse_line(line);
+            }
+
+            if (slide_and_merge_line_left(line)) {
+                changed = true;
+            }
+
+            if (dir == MOVE_RIGHT) {
+                reverse_line(line);
+            }
+
+            copy_line_to_row(row, line);
+        }
+    } else {
+        for (int col = 0; col < BOARD_SIZE; col++) {
+            int line[BOARD_SIZE];
+            copy_line_from_col(col, line);
+
+            if (dir == MOVE_DOWN) {
+                reverse_line(line);
+            }
+
+            if (slide_and_merge_line_left(line)) {
+                changed = true;
+            }
+
+            if (dir == MOVE_DOWN) {
+                reverse_line(line);
+            }
+
+            copy_line_to_col(col, line);
+        }
+    }
+
+    if (changed) {
+        add_random_tile();
+    }
+
+    has_moved_last_turn = changed;
+    refresh_end_state();
+    return changed;
+}
+
+static uint32_t get_tile_color(int value) {
+    switch (value) {
+        case 0:    return COLOR_EMPTY_TILE;
+        case 2:    return 0xFFEEE4DA;
+        case 4:    return 0xFFEDE0C8;
+        case 8:    return 0xFFF2B179;
+        case 16:   return 0xFFF59563;
+        case 32:   return 0xFFF67C5F;
+        case 64:   return 0xFFF65E3B;
+        case 128:  return 0xFFEDCF72;
+        case 256:  return 0xFFEDCC61;
+        case 512:  return 0xFFEDC850;
+        case 1024: return 0xFFEDC53F;
+        case 2048: return 0xFFEDC22E;
+        default:   return 0xFF3C91E6;
+    }
+}
+
+static uint32_t get_tile_text_color(int value) {
+    (void)value;
+    return 0xFF000000; // for visibility
+}
+
+static void int_to_text(int value, char *out) {
+    itoa(value, out);
+}
+
+static void draw_centered_text(ui_window_t win, int x, int y, int w, int h,
+                               const char *text, uint32_t color, float scale) {
+    (void)scale;
+
+    uint32_t text_w = ui_get_string_width(text);
+    uint32_t text_h = ui_get_font_height();
+
+    int draw_x = x + (w - (int)text_w) / 2;
+    int draw_y = y + (h - (int)text_h) / 2;
+
+    ui_draw_string(win, draw_x, draw_y, text, color);
+}
+
+static void draw_button(ui_window_t win, int x, int y, int w, int h,
+                        const char *label, uint32_t color) {
+    ui_draw_rounded_rect_filled(win, x, y, w, h, 6, color);
+    draw_centered_text(win, x, y, w, h, label, COLOR_TEXT, 1.0f);
+}
+
+static void draw_score_box(ui_window_t win, int x, int y, int w, int h,
+                           const char *title, int value) {
+    char buf[16];
+    int_to_text(value, buf);
+
+    ui_draw_rounded_rect_filled(win, x, y, w, h, 8, COLOR_PANEL_2);
+    draw_centered_text(win, x, y + 3, w, 14, title, COLOR_MUTED, 0.8f);
+    draw_centered_text(win, x, y + 16, w, 18, buf, COLOR_TEXT, 1.0f);
+}
+
+static void draw_tile(ui_window_t win, int x, int y, int value) {
+    char buf[16];
+    float scale = 1.6f;
+
+    ui_draw_rounded_rect_filled(win, x, y, TILE_SIZE, TILE_SIZE, 8, get_tile_color(value));
+
+    if (value == 0) {
+        return;
+    }
+
+    int_to_text(value, buf);
+
+    if (value >= 1000) {
+        scale = 1.2f;
+    } else if (value >= 100) {
+        scale = 1.4f;
+    }
+
+    draw_centered_text(
+        win,
+        x, y,
+        TILE_SIZE, TILE_SIZE,
+        buf,
+        0xFF000000,
+        scale
+    );
+}
+
+static void draw_board(ui_window_t win) {
+    int board_w = BOARD_SIZE * TILE_SIZE + (BOARD_SIZE + 1) * TILE_GAP;
+    int board_h = board_w;
+
+    ui_draw_rounded_rect_filled(win, BOARD_X, BOARD_Y, board_w, board_h, 10, COLOR_PANEL_2);
+
+    for (int y = 0; y < BOARD_SIZE; y++) {
+        for (int x = 0; x < BOARD_SIZE; x++) {
+            int px = BOARD_X + TILE_GAP + x * (TILE_SIZE + TILE_GAP);
+            int py = BOARD_Y + TILE_GAP + y * (TILE_SIZE + TILE_GAP);
+            draw_tile(win, px, py, board[y][x]);
+        }
+    }
+}
+
+static void draw_status(ui_window_t win) {
+    if (game_over) {
+        ui_draw_string(win, 18, 70, "Game over", COLOR_RED);
+    } else if (game_won) {
+        ui_draw_string(win, 18, 70, "2048 reached - keep going", COLOR_GREEN);
+    } else {
+        ui_draw_string(win, 18, 70, "Combine tiles to reach 2048", COLOR_MUTED);
+    }
+}
+
+static void game_paint(ui_window_t win) {
+    ui_draw_rect(win, 0, 0, WINDOW_W, WINDOW_H, COLOR_BG);
+
+    ui_draw_string_scaled(win, 18, 12, "2048", COLOR_TEXT, 1.6f);
+    ui_draw_string(win, 18, 42, "Use WASD keys", COLOR_MUTED);
+
+    draw_score_box(win, 155, 14, 56, 40, "SCORE", score);
+    draw_score_box(win, 220, 14, 62, 40, "BEST", best_tile);
+    draw_status(win);
+
+    draw_board(win);
+    /* Not recommended to use
+    draw_button(win, 18, 352, 86, 30, "Restart", COLOR_ACCENT);
+    draw_button(win, 123, 352, BTN_W, BTN_H, "Left", COLOR_BORDER);
+    draw_button(win, 186, 352, BTN_W, BTN_H, "Right", COLOR_BORDER);
+    draw_button(win, 92, 390, BTN_W, BTN_H, "Up", COLOR_BORDER);
+    draw_button(win, 155, 390, BTN_W, BTN_H, "Down", COLOR_BORDER);
+    */
+}
+
+static bool point_in_rect(int px, int py, int x, int y, int w, int h) {
+    return px >= x && px < x + w && py >= y && py < y + h;
+}
+
+/*  
+37 = left arrow
+38 = up arrow
+39 = right arrow
+40 = down arrow
+72 = numpad 8
+75 = numpad 4
+77 = numpad 6
+80 = numpad 2
+key = letter
+*/
+static bool is_left_key(int key) {
+    return key == 'a' || key == 'A' || key == 37 || key == 75;
+}
+
+static bool is_right_key(int key) {
+    return key == 'd' || key == 'D' || key == 39 || key == 77;
+}
+
+static bool is_up_key(int key) {
+    return key == 'w' || key == 'W' || key == 38 || key == 72;
+}
+
+static bool is_down_key(int key) {
+    return key == 's' || key == 'S' || key == 40 || key == 80;
+}
+
+static void handle_click(int x, int y) {
+    if (point_in_rect(x, y, 18, 352, 86, 30)) {
+        init_game();
+        return;
+    }
+    if (point_in_rect(x, y, 123, 352, BTN_W, BTN_H)) {
+        apply_move(MOVE_LEFT);
+        return;
+    }
+    if (point_in_rect(x, y, 186, 352, BTN_W, BTN_H)) {
+        apply_move(MOVE_RIGHT);
+        return;
+    }
+    if (point_in_rect(x, y, 92, 390, BTN_W, BTN_H)) {
+        apply_move(MOVE_UP);
+        return;
+    }
+    if (point_in_rect(x, y, 155, 390, BTN_W, BTN_H)) {
+        apply_move(MOVE_DOWN);
+        return;
+    }
+}
+
+static void handle_key(int key) {
+    if (key == 'r' || key == 'R') {
+        init_game();
+        return;
+    }
+
+    if (is_left_key(key)) {
+        apply_move(MOVE_LEFT);
+    } else if (is_right_key(key)) {
+        apply_move(MOVE_RIGHT);
+    } else if (is_up_key(key)) {
+        apply_move(MOVE_UP);
+    } else if (is_down_key(key)) {
+        apply_move(MOVE_DOWN);
+    }
+}
+
+int main(int argc, char **argv) {
+    (void)argc;
+    (void)argv;
+
+    ui_window_t win = ui_window_create("2048", 240, 120, WINDOW_W, WINDOW_H);
+    if (!win) {
+        return 1;
+    }
+
+    init_game();
+
+    gui_event_t ev;
+    while (1) {
+        if (ui_get_event(win, &ev)) {
+            if (ev.type == GUI_EVENT_PAINT) {
+                game_paint(win);
+                ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
+            } else if (ev.type == GUI_EVENT_CLICK) {
+                handle_click(ev.arg1, ev.arg2);
+                game_paint(win);
+                ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
+            } else if (ev.type == GUI_EVENT_KEY) {
+                handle_key(ev.arg1);
+                game_paint(win);
+                ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
+            } else if (ev.type == GUI_EVENT_CLOSE) {
+                sys_exit(0);
+            } else if (ev.type == GUI_EVENT_RESIZE) {
+                game_paint(win);
+                ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
+            }
+        } else {
+            sys_yield();
+        }
+    }
+
+    return 0;
+}

src/userland/games/doom/boredos_libc.c

@@ -149,26 +149,12 @@ char *strrchr(const char *s, int c) {
     if (c == 0) last = s;
     return (char*)last;
 }
-char *strchr(const char *s, int c) {
-    while (*s) { if (*s == c) return (char*)s; s++; }
-    if (c == 0) return (char*)s;
-    return NULL;
-}
 char *strdup(const char *s) {
     size_t len = strlen(s) + 1;
     char *dup = malloc(len);
     if (dup) memcpy(dup, s, len);
     return dup;
 }
-char *strstr(const char *haystack, const char *needle) {
-    size_t n = strlen(needle);
-    if (!n) return (char *)haystack;
-    while (*haystack) {
-        if (!strncmp(haystack, needle, n)) return (char *)haystack;
-        haystack++;
-    }
-    return NULL;
-}
 
 int toupper(int c) { return (c >= 'a' && c <= 'z') ? c - 32 : c; }
 int tolower(int c) { return (c >= 'A' && c <= 'Z') ? c + 32 : c; }

src/userland/games/doom/doomgeneric_boredos.c

@@ -39,8 +39,19 @@ void DG_SleepMs(uint32_t ms) {
 }
 
 uint32_t DG_GetTicksMs(void) {
-    uint64_t ticks = sys_system(16, 0, 0, 0, 0); // SYSTEM_CMD_UPTIME = 16 (100Hz)
-    return (uint32_t)(ticks * 10);
+    int fd = sys_open("/proc/uptime", "r");
+    if (fd < 0) return 0;
+    char buf[128];
+    int bytes = sys_read(fd, buf, 127);
+    sys_close(fd);
+    if (bytes <= 0) return 0;
+    buf[bytes] = 0;
+
+    char *p = strstr(buf, "Raw_Ticks:");
+    if (!p) return 0;
+    uint32_t ticks = atoi(p + 10);
+    // 60Hz to ms: ticks * 1000 / 60 = ticks * 50 / 3
+    return (ticks * 50) / 3;
 }
 
 void DG_SetWindowTitle(const char * title) {
@@ -108,7 +119,7 @@ int DG_GetKey(int* pressed, unsigned char* key) {
 int main(int argc, char** argv) {
     (void)argc;
     (void)argv;
-    char* fake_argv[] = {"doom", "-iwad", "A:/Library/DOOM/doom1.wad"};
+    char* fake_argv[] = {"doom", "-iwad", "/Library/DOOM/doom1.wad"};
     doomgeneric_Create(3, fake_argv);
 
     while (1) {

src/userland/gui/about.c

@@ -95,36 +95,39 @@ static void about_paint(ui_window_t win) {
     draw_ascii_logo(win, 14, offset_y);
     
     int fh = ui_get_font_height();
-    os_info_t os_info;
-    sys_get_os_info(&os_info);
-    
-    char os_name_str[128];
-    os_name_str[0] = 0;
-    strcat(os_name_str, os_info.os_name);
-    strcat(os_name_str, " '");
-    strcat(os_name_str, os_info.os_codename);
-    strcat(os_name_str, "'");
+    int fd_v = sys_open("/proc/version", "r");
+    char v_buf[1024]; v_buf[0] = 0;
+    if (fd_v >= 0) {
+        int b = sys_read(fd_v, v_buf, 1023);
+        v_buf[b] = 0;
+        sys_close(fd_v);
+    }
 
-    char os_version_str[128];
-    os_version_str[0] = 0;
-    strcat(os_version_str, os_info.os_name);
-    strcat(os_version_str, " Version ");
-    strcat(os_version_str, os_info.os_version);
-    
-    char kernel_version_str[128];
-    kernel_version_str[0] = 0;
-    strcat(kernel_version_str, os_info.kernel_name);
-    strcat(kernel_version_str, " Version ");
-    strcat(kernel_version_str, os_info.kernel_version);
-    strcat(kernel_version_str, " ");
-    strcat(kernel_version_str, os_info.build_arch);
+    char os_name_str[128] = "Unknown OS";
+    char os_version_str[128] = "Unknown Version";
+    char kernel_version_str[128] = "Unknown Kernel";
+    char build_date_str[128] = "Unknown Build";
 
-    char build_date_str[128];
-    build_date_str[0] = 0;
-    strcat(build_date_str, "Build Date: ");
-    strcat(build_date_str, os_info.build_date);
-    strcat(build_date_str, " ");
-    strcat(build_date_str, os_info.build_time);
+    if (v_buf[0]) {
+        char *line1 = v_buf;
+        char *line2 = strchr(line1, '\n'); if (line2) { *line2 = 0; line2++; }
+        char *line3 = line2 ? strchr(line2, '\n') : NULL; if (line3) { *line3 = 0; line3++; }
+
+        strcpy(os_name_str, line1);
+        if (line2) {
+            strcpy(os_version_str, line2);
+        }
+        if (line3) {
+            strcpy(kernel_version_str, line3);
+            char *line4 = strchr(line3, '\n');
+            if (line4) {
+                *line4 = 0; line4++;
+                strcpy(build_date_str, line4);
+                char *line5 = strchr(build_date_str, '\n');
+                if (line5) *line5 = 0;
+            }
+        }
+    }
 
     ui_draw_string(win, offset_x, offset_y + 105, os_name_str, 0xFFFFFFFF);
     ui_draw_string(win, offset_x, offset_y + 105 + fh, os_version_str, 0xFFFFFFFF);

src/userland/gui/browser.c

@@ -32,19 +32,6 @@ static int win_h = 960;
 static char history_stack[HISTORY_MAX][512];
 static int history_count = 0;
 
-static char* strstr(const char* haystack, const char* needle) {
-    if (!*needle) return (char*)haystack;
-    for (; *haystack; haystack++) {
-        const char *h = haystack;
-        const char *n = needle;
-        while (*h && *n && *h == *n) {
-            h++; n++;
-        }
-        if (!*n) return (char*)haystack;
-    }
-    return NULL;
-}
-
 static char* str_istrstr(const char* haystack, const char* needle) {
     if (!*needle) return (char*)haystack;
     for (; *haystack; haystack++) {

src/userland/gui/notepad.c

@@ -37,7 +37,7 @@ static void notepad_ensure_cursor_visible(int h) {
 }
 
 static void notepad_load_state() {
-    int fd = sys_open("A:/tmp/notepad_state.txt", "r");
+    int fd = sys_open("/tmp/notepad_state.txt", "r");
     if (fd >= 0) {
         sys_serial_write("Notepad: Loading state...\n");
         buf_len = sys_read(fd, buffer, NOTEPAD_BUF_SIZE - 1);
@@ -50,8 +50,8 @@ static void notepad_load_state() {
 
 static void notepad_save_state() {
     // Ensure dir exists
-    sys_mkdir("A:/tmp");
-    int fd = sys_open("A:/tmp/notepad_state.txt", "w");
+    sys_mkdir("/tmp");
+    int fd = sys_open("/tmp/notepad_state.txt", "w");
     if (fd >= 0) {
         sys_write_fs(fd, buffer, buf_len);
         sys_close(fd);

src/userland/gui/paint.c

@@ -28,7 +28,7 @@ static uint32_t *canvas_buffer = NULL;
 static uint32_t current_color = COLOR_BLACK;
 static int last_mx = -1;
 static int last_my = -1;
-static char current_file_path[256] = "/Desktop/drawing.pnt";
+static char current_file_path[256] = "/root/Desktop/drawing.pnt";
 
 static void paint_strcpy(char *dest, const char *src) {
     while (*src) *dest++ = *src++;
@@ -79,12 +79,7 @@ static void paint_paint(ui_window_t win) {
 
     // Draw canvas content
     if (canvas_buffer) {
-        for (int y = 0; y < CANVAS_H; y++) {
-            for (int x = 0; x < CANVAS_W; x++) {
-                uint32_t color = canvas_buffer[y * CANVAS_W + x];
-                ui_draw_rect(win, canvas_x + x, canvas_y + y, 1, 1, color);
-            }
-        }
+        ui_draw_image(win, canvas_x, canvas_y, CANVAS_W, CANVAS_H, canvas_buffer);
     }
 }
 
@@ -96,7 +91,6 @@ static void paint_put_brush(ui_window_t win, int cx, int cy, int *min_x, int *mi
             int py = cy + dy;
             if (px >= 0 && px < CANVAS_W && py >= 0 && py < CANVAS_H) {
                 canvas_buffer[py * CANVAS_W + px] = current_color;
-                ui_draw_rect(win, 60 + px, 0 + py, 1, 1, current_color);
                 
                 if (px < *min_x) *min_x = px;
                 if (py < *min_y) *min_y = py;
@@ -140,6 +134,7 @@ void paint_handle_mouse(ui_window_t win, int x, int y) {
     }
     
     if (min_x <= max_x && min_y <= max_y) {
+        ui_draw_image(win, 60, 0, CANVAS_W, CANVAS_H, canvas_buffer);
         ui_mark_dirty(win, 60 + min_x, 0 + min_y, (max_x - min_x) + 1, (max_y - min_y) + 1);
     }
 

src/userland/gui/screenshot.c

@@ -84,7 +84,7 @@ int main(int argc, char **argv) {
     uint64_t dt[6] = {0};
     syscall2(SYS_GUI, GUI_CMD_GET_DATETIME, (uint64_t)dt);
     
-    strcpy(g_filename, "/Desktop/screenshot-");
+    strcpy(g_filename, "/root/Desktop/screenshot-");
     append_num((int)dt[0], 4); // Year
     append_num((int)dt[1], 2); // Month
     append_num((int)dt[2], 2); // Day
@@ -110,7 +110,7 @@ int main(int argc, char **argv) {
             
             // Show notification
             char notif[256] = "Saved ";
-            strcat(notif, g_filename + 9); // Skip "/Desktop/"
+            strcat(notif, g_filename + 14); // Skip "/root/Desktop/"
             syscall2(SYS_GUI, GUI_CMD_SHOW_NOTIFICATION, (uint64_t)notif);
         } else {
             res = 0;

src/userland/gui/taskman.c

@@ -32,38 +32,111 @@ static uint64_t kernel_ticks_prev = 0;
 static uint64_t total_mem_system = 0;
 static uint64_t used_mem_system = 0;
 static char cpu_model_name[64] = "Unknown CPU";
+static int cpu_cores = 1;
 
-typedef struct {
-    size_t total_memory;
-    size_t used_memory;
-    size_t available_memory;
-    size_t allocated_blocks;
-    size_t free_blocks;
-    size_t largest_free_block;
-    size_t smallest_free_block;
-    size_t fragmentation_percent;
-    size_t peak_memory_used;
-} MemStats;
+static int find_value(const char *buf, const char *key) {
+    char *p = (char*)buf;
+    int key_len = strlen(key);
+    while (*p) {
+        if (memcmp(p, key, key_len) == 0 && p[key_len] == ':') {
+            p += key_len + 1;
+            while (*p == ' ') p++;
+            return atoi(p);
+        }
+        while (*p && *p != '\n') p++;
+        if (*p == '\n') p++;
+    }
+    return 0;
+}
+
+static void find_string(const char *buf, const char *key, char *out, int max_len) {
+    char *p = (char*)buf;
+    int key_len = strlen(key);
+    while (*p) {
+        if (memcmp(p, key, key_len) == 0 && p[key_len] == ':') {
+            p += key_len + 1;
+            while (*p == ' ') p++;
+            int i = 0;
+            while (*p && *p != '\n' && i < max_len - 1) {
+                out[i++] = *p++;
+            }
+            out[i] = 0;
+            return;
+        }
+        while (*p && *p != '\n') p++;
+        if (*p == '\n') p++;
+    }
+    strcpy(out, "Unknown");
+}
 
 static void update_proc_list(void) {
-    proc_count = sys_system(SYSTEM_CMD_PROCESS_LIST, (uint64_t)proc_list, 32, 0, 0);
-    
-    uint64_t uptime_now = sys_system(SYSTEM_CMD_UPTIME, 0, 0, 0, 0);
+    FAT32_FileInfo entries[64];
+    int count = sys_list("/proc", entries, 64);
+    if (count < 0) return;
+
+    proc_count = 0;
     uint64_t user_ticks_now = 0;
-    
-    for (int i = 0; i < proc_count; i++) {
-        if (proc_list[i].pid != 0) {
-            user_ticks_now += proc_list[i].ticks;
+
+    for (int i = 0; i < count; i++) {
+        if (entries[i].is_directory) {
+            // Check if name is numeric (PID)
+            bool numeric = true;
+            for (int j = 0; entries[i].name[j]; j++) {
+                if (entries[i].name[j] < '0' || entries[i].name[j] > '9') {
+                    numeric = false;
+                    break;
+                }
+            }
+            if (!numeric) continue;
+
+            int pid = atoi(entries[i].name);
+            char path[64];
+            strcpy(path, "/proc/");
+            strcat(path, entries[i].name);
+            strcat(path, "/status");
+
+            int fd = sys_open(path, "r");
+            if (fd >= 0) {
+                char buf[512];
+                int bytes = sys_read(fd, buf, 511);
+                sys_close(fd);
+                if (bytes > 0) {
+                    buf[bytes] = 0;
+                    proc_list[proc_count].pid = pid;
+                    find_string(buf, "Name", proc_list[proc_count].name, 64);
+                    proc_list[proc_count].used_memory = (size_t)find_value(buf, "Memory") * 1024;
+                    uint64_t ticks = (uint64_t)find_value(buf, "Ticks");
+                    proc_list[proc_count].ticks = ticks;
+                    
+                    proc_list[proc_count].is_idle = find_value(buf, "Idle") == 1;
+                    
+                    if (!proc_list[proc_count].is_idle) user_ticks_now += ticks;
+                    proc_count++;
+                    if (proc_count >= 32) break;
+                }
+            }
         }
     }
-    
+
+    // Global stats
+    int fd_u = sys_open("/proc/uptime", "r");
+    uint64_t uptime_now = 0;
+    if (fd_u >= 0) {
+        char buf[256];
+        int bytes = sys_read(fd_u, buf, 255);
+        sys_close(fd_u);
+        if (bytes > 0) {
+            buf[bytes] = 0;
+            uptime_now = (uint64_t)find_value(buf, "Raw_Ticks");
+        }
+    }
+
     if (uptime_prev > 0) {
         uint64_t total_delta = uptime_now - uptime_prev;
         if (total_delta > 0) {
-            uint64_t used_delta = user_ticks_now - kernel_ticks_prev; // Reusing the global state variable for prev user_ticks
-            
-            // On a 4 CPU system, theoretically used_delta can be 4x total_delta
-            int usage = (int)((used_delta * 100) / (total_delta * 4));
+            uint64_t used_delta = user_ticks_now - kernel_ticks_prev;
+            int cores = cpu_cores > 0 ? cpu_cores : 1;
+            int usage = (int)((used_delta * 100) / (total_delta * cores));
             if (usage > 100) usage = 100;
             cpu_history[history_idx] = usage;
         }
@@ -72,11 +145,18 @@ static void update_proc_list(void) {
     uptime_prev = uptime_now;
     kernel_ticks_prev = user_ticks_now;
     
-    MemStats stats;
-    sys_system(SYSTEM_CMD_MEMINFO, (uint64_t)&stats, 0, 0, 0);
-    total_mem_system = stats.total_memory;
-    used_mem_system = stats.used_memory;
-    mem_history[history_idx] = (int)(stats.used_memory / 1024);
+    int fd_m = sys_open("/proc/meminfo", "r");
+    if (fd_m >= 0) {
+        char buf[1024];
+        int bytes = sys_read(fd_m, buf, 1023);
+        sys_close(fd_m);
+        if (bytes > 0) {
+            buf[bytes] = 0;
+            total_mem_system = (uint64_t)find_value(buf, "MemTotal") * 1024;
+            used_mem_system = (uint64_t)find_value(buf, "MemUsed") * 1024;
+            mem_history[history_idx] = (int)(used_mem_system / 1024);
+        }
+    }
     
     history_idx = (history_idx + 1) % GRAPH_POINTS;
 }
@@ -168,9 +248,12 @@ static void draw_taskman(void) {
     // Memory Graph Area
     ui_draw_string(win_taskman, 205, 10, "MEMORY", COLOR_MEM);
     char mem_pct_label[16];
-    int current_mem_pct = 0;
-    if (total_mem_system > 0) current_mem_pct = (int)((used_mem_system * 100) / total_mem_system);
-    itoa(current_mem_pct, mem_pct_label);
+    int current_mem_pct_x10 = 0;
+    if (total_mem_system > 0) current_mem_pct_x10 = (int)((used_mem_system * 1000) / total_mem_system);
+    itoa(current_mem_pct_x10 / 10, mem_pct_label);
+    strcat(mem_pct_label, ".");
+    char frac[4]; itoa(current_mem_pct_x10 % 10, frac);
+    strcat(mem_pct_label, frac);
     strcat(mem_pct_label, "%");
     ui_draw_string(win_taskman, 340, 10, mem_pct_label, COLOR_MEM);
     
@@ -255,8 +338,18 @@ static void draw_taskman(void) {
 int main(void) {
     win_taskman = ui_window_create("Task Manager", 100, 100, 400, 480);
     
-    // Fetch CPU model
-    sys_system(SYSTEM_CMD_GET_CPU_MODEL, (uint64_t)cpu_model_name, 0, 0, 0);
+    int fd_c = sys_open("/proc/cpuinfo", "r");
+    if (fd_c >= 0) {
+        char buf[1024];
+        int bytes = sys_read(fd_c, buf, 1023);
+        sys_close(fd_c);
+        if (bytes > 0) {
+            buf[bytes] = 0;
+            find_string(buf, "Processor", cpu_model_name, 64);
+            int cores = find_value(buf, "Cores");
+            if (cores > 0) cpu_cores = cores;
+        }
+    }
     
     for(int i=0; i<GRAPH_POINTS; i++) { cpu_history[i] = 0; mem_history[i] = 0; }
     

src/userland/gui/terminal.c

@@ -0,0 +1,893 @@
+// Copyright (c) 2023-2026 Chris (boreddevnl)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
+#include <stdlib.h>
+#include <syscall.h>
+#include "libc/libui.h"
+#include <stdbool.h>
+#include <stdint.h>
+
+#define DEFAULT_COLS 116
+#define DEFAULT_ROWS 41
+#define SCROLLBACK_LINES 800
+#define SCROLLBACK_COLS 256
+#define CHAR_W 8
+#define DEFAULT_LINE_H 10
+#define TAB_BAR_H 20
+#define CONTENT_PAD_BOTTOM 20
+#define TAB_CLOSE_W 12
+#define TAB_CLOSE_PAD 6
+#define MAX_TABS 4
+#define TTY_READ_CHUNK 512
+
+typedef struct {
+    char c;
+    uint32_t color;
+} CharCell;
+
+typedef struct {
+    int tty_id;
+    int bsh_pid;
+    CharCell *cells;
+    CharCell *scrollback;
+    int *scroll_cols;
+    int scroll_head;
+    int scroll_count;
+    int scroll_offset;
+    int cursor_row;
+    int cursor_col;
+    uint32_t fg_color;
+    uint32_t bg_color;
+
+    int ansi_state;
+    int ansi_params[8];
+    int ansi_param_count;
+    int saved_row;
+    int saved_col;
+} TerminalSession;
+
+static ui_window_t g_win;
+static TerminalSession g_tabs[MAX_TABS];
+static int g_tab_count = 0;
+static int g_active_tab = 0;
+static int g_cols = DEFAULT_COLS;
+static int g_rows = DEFAULT_ROWS;
+static int g_line_h = DEFAULT_LINE_H;
+static int g_win_w = DEFAULT_COLS * CHAR_W;
+static int g_win_h = TAB_BAR_H + (DEFAULT_ROWS * DEFAULT_LINE_H);
+
+static void str_copy(char *dst, const char *src, int max_len) {
+    int i = 0;
+    if (max_len <= 0) return;
+    while (i < max_len - 1 && src && src[i]) {
+        dst[i] = src[i];
+        i++;
+    }
+    dst[i] = 0;
+}
+
+static void str_append(char *dst, const char *src, int max_len) {
+    if (!dst || !src || max_len <= 0) return;
+    int dlen = (int)strlen(dst);
+    int i = 0;
+    while (dlen + i < max_len - 1 && src[i]) {
+        dst[dlen + i] = src[i];
+        i++;
+    }
+    dst[dlen + i] = 0;
+}
+
+static void trim_end(char *s) {
+    if (!s) return;
+    int len = (int)strlen(s);
+    while (len > 0 && (s[len - 1] == '\n' || s[len - 1] == '\r' || s[len - 1] == ' ' || s[len - 1] == '\t')) {
+        s[len - 1] = 0;
+        len--;
+    }
+}
+
+static void scrollback_init(TerminalSession *s) {
+    s->scroll_head = 0;
+    s->scroll_count = 0;
+    s->scroll_offset = 0;
+    if (s->scrollback) {
+        for (int i = 0; i < SCROLLBACK_LINES * SCROLLBACK_COLS; i++) {
+            s->scrollback[i].c = ' ';
+            s->scrollback[i].color = s->fg_color;
+        }
+    }
+    if (s->scroll_cols) {
+        for (int i = 0; i < SCROLLBACK_LINES; i++) s->scroll_cols[i] = 0;
+    }
+}
+
+static void scrollback_push_row(TerminalSession *s, const CharCell *row, int cols) {
+    if (!s->scrollback || !s->scroll_cols) return;
+    int idx = s->scroll_head;
+    CharCell *dest = s->scrollback + (idx * SCROLLBACK_COLS);
+    int copy_cols = cols;
+    if (copy_cols > SCROLLBACK_COLS) copy_cols = SCROLLBACK_COLS;
+
+    for (int i = 0; i < SCROLLBACK_COLS; i++) {
+        dest[i].c = ' ';
+        dest[i].color = s->fg_color;
+    }
+    for (int i = 0; i < copy_cols; i++) {
+        dest[i] = row[i];
+    }
+
+    s->scroll_cols[idx] = copy_cols;
+    s->scroll_head = (idx + 1) % SCROLLBACK_LINES;
+    if (s->scroll_count < SCROLLBACK_LINES) {
+        s->scroll_count++;
+    } else if (s->scroll_offset > 0) {
+        s->scroll_offset--;
+    }
+
+    if (s->scroll_offset > 0) {
+        s->scroll_offset++;
+    }
+}
+
+static int scrollback_max_offset(TerminalSession *s) {
+    int total = s->scroll_count + g_rows;
+    if (total <= g_rows) return 0;
+    return total - g_rows;
+}
+
+static void session_adjust_scroll(TerminalSession *s, int delta) {
+    if (!s) return;
+    int max_offset = scrollback_max_offset(s);
+    s->scroll_offset += delta;
+    if (s->scroll_offset < 0) s->scroll_offset = 0;
+    if (s->scroll_offset > max_offset) s->scroll_offset = max_offset;
+}
+
+static CharCell *scrollback_get_line(TerminalSession *s, int line_index, int *out_cols) {
+    if (!s || line_index < 0 || line_index >= s->scroll_count) return NULL;
+    int start = s->scroll_head - s->scroll_count;
+    if (start < 0) start += SCROLLBACK_LINES;
+    int idx = (start + line_index) % SCROLLBACK_LINES;
+    if (out_cols) *out_cols = s->scroll_cols[idx];
+    return s->scrollback + (idx * SCROLLBACK_COLS);
+}
+
+static uint32_t ansi_color_16(int idx) {
+    static uint32_t base[16] = {
+        0xFF000000, 0xFFAA0000, 0xFF00AA00, 0xFFAA5500,
+        0xFF0000AA, 0xFFAA00AA, 0xFF00AAAA, 0xFFAAAAAA,
+        0xFF555555, 0xFFFF5555, 0xFF55FF55, 0xFFFFFF55,
+        0xFF5555FF, 0xFFFF55FF, 0xFF55FFFF, 0xFFFFFFFF
+    };
+    if (idx < 0) idx = 0;
+    if (idx > 15) idx = 15;
+    return base[idx];
+}
+
+static void session_reset_colors(TerminalSession *s) {
+    s->fg_color = 0xFFFFFFFF;
+    s->bg_color = 0xFF1E1E1E;
+}
+
+static void session_clear(TerminalSession *s) {
+    for (int i = 0; i < g_cols * g_rows; i++) {
+        s->cells[i].c = ' ';
+        s->cells[i].color = s->fg_color;
+    }
+    s->cursor_row = 0;
+    s->cursor_col = 0;
+    s->scroll_offset = 0;
+}
+
+static void session_scroll(TerminalSession *s) {
+    int row_bytes = g_cols * (int)sizeof(CharCell);
+    if (g_rows > 0) {
+        scrollback_push_row(s, s->cells, g_cols);
+    }
+    memmove(s->cells, s->cells + g_cols, row_bytes * (g_rows - 1));
+    for (int i = 0; i < g_cols; i++) {
+        int idx = (g_rows - 1) * g_cols + i;
+        s->cells[idx].c = ' ';
+        s->cells[idx].color = s->fg_color;
+    }
+    s->cursor_row = g_rows - 1;
+    s->cursor_col = 0;
+}
+
+static void session_put_char(TerminalSession *s, char c) {
+    if (c == '\n') {
+        s->cursor_row++;
+        s->cursor_col = 0;
+        if (s->cursor_row >= g_rows) session_scroll(s);
+        return;
+    }
+    if (c == '\r') {
+        s->cursor_col = 0;
+        return;
+    }
+    if (c == '\b') {
+        if (s->cursor_col > 0) s->cursor_col--;
+        int idx = s->cursor_row * g_cols + s->cursor_col;
+        if (idx >= 0 && idx < g_cols * g_rows) {
+            s->cells[idx].c = ' ';
+            s->cells[idx].color = s->fg_color;
+        }
+        return;
+    }
+    if (c == '\t') {
+        int next = ((s->cursor_col / 4) + 1) * 4;
+        while (s->cursor_col < next) {
+            session_put_char(s, ' ');
+        }
+        return;
+    }
+
+    if (c < 32) return;
+
+    int idx = s->cursor_row * g_cols + s->cursor_col;
+    if (idx >= 0 && idx < g_cols * g_rows) {
+        s->cells[idx].c = c;
+        s->cells[idx].color = s->fg_color;
+    }
+    s->cursor_col++;
+    if (s->cursor_col >= g_cols) {
+        s->cursor_col = 0;
+        s->cursor_row++;
+        if (s->cursor_row >= g_rows) session_scroll(s);
+    }
+}
+
+static void ansi_handle_sgr(TerminalSession *s) {
+    if (s->ansi_param_count == 0) {
+        session_reset_colors(s);
+        return;
+    }
+    for (int i = 0; i < s->ansi_param_count; i++) {
+        int p = s->ansi_params[i];
+        if (p == 0) session_reset_colors(s);
+        else if (p >= 30 && p <= 37) s->fg_color = ansi_color_16(p - 30);
+        else if (p >= 90 && p <= 97) s->fg_color = ansi_color_16(8 + (p - 90));
+        else if (p >= 40 && p <= 47) s->bg_color = ansi_color_16(p - 40);
+        else if (p >= 100 && p <= 107) s->bg_color = ansi_color_16(8 + (p - 100));
+        else if (p == 38 || p == 48) {
+            if (i + 4 < s->ansi_param_count && s->ansi_params[i + 1] == 2) {
+                int r = s->ansi_params[i + 2] & 0xFF;
+                int g = s->ansi_params[i + 3] & 0xFF;
+                int b = s->ansi_params[i + 4] & 0xFF;
+                uint32_t color = 0xFF000000 | ((uint32_t)r << 16) | ((uint32_t)g << 8) | (uint32_t)b;
+                if (p == 38) s->fg_color = color;
+                else s->bg_color = color;
+                i += 4;
+            }
+        }
+    }
+}
+
+static void ansi_finalize(TerminalSession *s, char cmd) {
+    if (cmd == 'm') {
+        ansi_handle_sgr(s);
+    } else if (cmd == 'J') {
+        int mode = s->ansi_param_count > 0 ? s->ansi_params[0] : 0;
+        if (mode == 2 || mode == 0) session_clear(s);
+    } else if (cmd == 'K') {
+        int row = s->cursor_row;
+        for (int col = s->cursor_col; col < g_cols; col++) {
+            int idx = row * g_cols + col;
+            s->cells[idx].c = ' ';
+            s->cells[idx].color = s->fg_color;
+        }
+    } else if (cmd == 'H' || cmd == 'f') {
+        int row = (s->ansi_param_count > 0) ? s->ansi_params[0] : 1;
+        int col = (s->ansi_param_count > 1) ? s->ansi_params[1] : 1;
+        if (row < 1) row = 1;
+        if (col < 1) col = 1;
+        s->cursor_row = row - 1;
+        s->cursor_col = col - 1;
+    } else if (cmd == 'A') {
+        int n = (s->ansi_param_count > 0) ? s->ansi_params[0] : 1;
+        s->cursor_row -= n;
+        if (s->cursor_row < 0) s->cursor_row = 0;
+    } else if (cmd == 'B') {
+        int n = (s->ansi_param_count > 0) ? s->ansi_params[0] : 1;
+        s->cursor_row += n;
+        if (s->cursor_row >= g_rows) s->cursor_row = g_rows - 1;
+    } else if (cmd == 'C') {
+        int n = (s->ansi_param_count > 0) ? s->ansi_params[0] : 1;
+        s->cursor_col += n;
+        if (s->cursor_col >= g_cols) s->cursor_col = g_cols - 1;
+    } else if (cmd == 'D') {
+        int n = (s->ansi_param_count > 0) ? s->ansi_params[0] : 1;
+        s->cursor_col -= n;
+        if (s->cursor_col < 0) s->cursor_col = 0;
+    } else if (cmd == 's') {
+        s->saved_row = s->cursor_row;
+        s->saved_col = s->cursor_col;
+    } else if (cmd == 'u') {
+        s->cursor_row = s->saved_row;
+        s->cursor_col = s->saved_col;
+    }
+
+    s->ansi_state = 0;
+    s->ansi_param_count = 0;
+}
+
+static void session_process_char(TerminalSession *s, char c) {
+    if (s->ansi_state == 0) {
+        if (c == 27) {
+            s->ansi_state = 1;
+            s->ansi_param_count = 0;
+            s->ansi_params[0] = 0;
+            return;
+        }
+        session_put_char(s, c);
+        return;
+    }
+
+    if (s->ansi_state == 1) {
+        if (c == '[') {
+            s->ansi_state = 2;
+            s->ansi_param_count = 0;
+            s->ansi_params[0] = 0;
+            return;
+        }
+        s->ansi_state = 0;
+        session_put_char(s, c);
+        return;
+    }
+
+    if (s->ansi_state == 2) {
+        if (c >= '0' && c <= '9') {
+            int idx = s->ansi_param_count;
+            s->ansi_params[idx] = s->ansi_params[idx] * 10 + (c - '0');
+            return;
+        }
+        if (c == ';') {
+            if (s->ansi_param_count < 7) {
+                s->ansi_param_count++;
+                s->ansi_params[s->ansi_param_count] = 0;
+            }
+            return;
+        }
+        s->ansi_param_count++;
+        ansi_finalize(s, c);
+        return;
+    }
+}
+
+static void session_process_output(TerminalSession *s, const char *buf, int len) {
+    for (int i = 0; i < len; i++) {
+        session_process_char(s, buf[i]);
+    }
+}
+
+static int get_tab_width(void) {
+    if (g_tab_count <= 0) return g_win_w;
+    int tab_w = g_win_w / g_tab_count;
+    if (tab_w < 60) tab_w = 60;
+    return tab_w;
+}
+
+static int read_proc_field(int pid, const char *field, char *out, int max_len) {
+    if (!out || max_len <= 0) return -1;
+    char path[64];
+    path[0] = 0;
+    str_append(path, "/proc/", sizeof(path));
+    char pid_buf[16];
+    itoa(pid, pid_buf);
+    str_append(path, pid_buf, sizeof(path));
+    str_append(path, "/", sizeof(path));
+    str_append(path, field, sizeof(path));
+
+    int fd = sys_open(path, "r");
+    if (fd < 0) return -1;
+    int bytes = sys_read(fd, out, max_len - 1);
+    sys_close(fd);
+    if (bytes <= 0) return -1;
+    out[bytes] = 0;
+    trim_end(out);
+    return 0;
+}
+
+static void truncate_label(const char *src, char *out, int max_chars) {
+    if (!out || max_chars <= 0) return;
+    int len = (int)strlen(src);
+    if (len <= max_chars) {
+        str_copy(out, src, max_chars + 1);
+        return;
+    }
+    if (max_chars <= 3) {
+        for (int i = 0; i < max_chars; i++) out[i] = src[i];
+        out[max_chars] = 0;
+        return;
+    }
+    for (int i = 0; i < max_chars - 3; i++) out[i] = src[i];
+    out[max_chars - 3] = '.';
+    out[max_chars - 2] = '.';
+    out[max_chars - 1] = '.';
+    out[max_chars] = 0;
+}
+
+static void get_tab_title(TerminalSession *s, char *out, int max_len) {
+    if (!s || !out) return;
+    int fg = sys_tty_get_fg(s->tty_id);
+    if (fg > 0) {
+        if (read_proc_field(fg, "name", out, max_len) == 0) return;
+    }
+    if (s->bsh_pid > 0) {
+        if (read_proc_field(s->bsh_pid, "cwd", out, max_len) == 0) return;
+    }
+    str_copy(out, "Bsh", max_len);
+}
+
+static int read_config_value(const char *key, char *out, int max_len) {
+    if (!key || !out || max_len <= 0) return -1;
+    int fd = sys_open("/Library/bsh/bshrc", "r");
+    if (fd < 0) return -1;
+
+    char buf[4096];
+    int bytes = sys_read(fd, buf, sizeof(buf) - 1);
+    sys_close(fd);
+    if (bytes <= 0) return -1;
+    buf[bytes] = 0;
+
+    char *line = buf;
+    while (*line) {
+        char *end = line;
+        while (*end && *end != '\n' && *end != '\r') end++;
+        char saved = *end;
+        *end = 0;
+
+        trim_end(line);
+        if (line[0] != '#' && line[0] != 0) {
+            char *sep = line;
+            while (*sep && *sep != '=') sep++;
+            if (*sep == '=') {
+                *sep = 0;
+                if (strcmp(line, key) == 0) {
+                    str_copy(out, sep + 1, max_len);
+                    return 0;
+                }
+            }
+        }
+
+        line = end + (saved ? 1 : 0);
+        if (saved == '\r' && *line == '\n') line++;
+    }
+
+    return -1;
+}
+
+static void resolve_bsh_path(char *out, int max_len) {
+    char path_line[256];
+    if (read_config_value("PATH", path_line, sizeof(path_line)) != 0) {
+        str_copy(path_line, "/bin", sizeof(path_line));
+    }
+
+    int i = 0;
+    int start = 0;
+    while (1) {
+        if (path_line[i] == ':' || path_line[i] == 0) {
+            int len = i - start;
+            if (len > 0) {
+                char base[128];
+                if (len >= (int)sizeof(base)) len = (int)sizeof(base) - 1;
+                for (int j = 0; j < len; j++) base[j] = path_line[start + j];
+                base[len] = 0;
+
+                char candidate[160];
+                candidate[0] = 0;
+                str_append(candidate, base, sizeof(candidate));
+                if (candidate[0] && candidate[strlen(candidate) - 1] != '/') str_append(candidate, "/", sizeof(candidate));
+                str_append(candidate, "bsh.elf", sizeof(candidate));
+                if (sys_exists(candidate)) {
+                    str_copy(out, candidate, max_len);
+                    return;
+                }
+
+                candidate[0] = 0;
+                str_append(candidate, base, sizeof(candidate));
+                if (candidate[0] && candidate[strlen(candidate) - 1] != '/') str_append(candidate, "/", sizeof(candidate));
+                str_append(candidate, "bsh", sizeof(candidate));
+                if (sys_exists(candidate)) {
+                    str_copy(out, candidate, max_len);
+                    return;
+                }
+            }
+            start = i + 1;
+        }
+        if (path_line[i] == 0) break;
+        i++;
+    }
+
+    str_copy(out, "/bin/bsh.elf", max_len);
+}
+
+static bool has_space(const char *s) {
+    if (!s) return false;
+    while (*s) {
+        if (*s == ' ') return true;
+        s++;
+    }
+    return false;
+}
+
+static void terminal_resize(int w, int h) {
+    int min_w = CHAR_W * 40;
+    int min_h = TAB_BAR_H + (g_line_h * 10);
+    if (w < min_w) w = min_w;
+    if (h < min_h) h = min_h;
+
+    g_win_w = w;
+    g_win_h = h;
+
+    int new_cols = w / CHAR_W;
+    int content_h = h - TAB_BAR_H - CONTENT_PAD_BOTTOM;
+    if (g_line_h <= 0) g_line_h = DEFAULT_LINE_H;
+    if (content_h < g_line_h) content_h = g_line_h;
+    int new_rows = content_h / g_line_h;
+    if (new_cols < 10) new_cols = 10;
+    if (new_rows < 5) new_rows = 5;
+
+    if (new_cols == g_cols && new_rows == g_rows) return;
+
+    int old_cols = g_cols;
+    int old_rows = g_rows;
+    g_cols = new_cols;
+    g_rows = new_rows;
+
+    for (int i = 0; i < g_tab_count; i++) {
+        TerminalSession *s = &g_tabs[i];
+        int old_scroll_count = s->scroll_count;
+        int old_scroll_offset = s->scroll_offset;
+        int old_total_lines = old_scroll_count + old_rows;
+        int old_bottom_line = old_total_lines - 1 - old_scroll_offset;
+        int old_top_line = old_bottom_line - (old_rows - 1);
+        CharCell *old_cells = s->cells;
+        int old_cursor_row = s->cursor_row;
+        int old_cursor_col = s->cursor_col;
+
+        s->cells = (CharCell *)malloc(sizeof(CharCell) * g_cols * g_rows);
+        for (int j = 0; j < g_cols * g_rows; j++) {
+            s->cells[j].c = ' ';
+            s->cells[j].color = s->fg_color;
+        }
+
+        int row_start = 0;
+        if (old_rows > g_rows) {
+            if (old_cursor_row >= g_rows) {
+                row_start = old_cursor_row - (g_rows - 1);
+            } else {
+                row_start = 0;
+            }
+            int max_start = old_rows - g_rows;
+            if (row_start > max_start) row_start = max_start;
+            if (row_start < 0) row_start = 0;
+        }
+        int dropped = 0;
+        if (row_start > 0) {
+            int projected = old_scroll_count + row_start;
+            if (projected > SCROLLBACK_LINES) dropped = projected - SCROLLBACK_LINES;
+        }
+        int desired_top_line = old_top_line - dropped;
+        if (desired_top_line < 0) desired_top_line = 0;
+        for (int r = 0; r < row_start; r++) {
+            scrollback_push_row(s, old_cells + (r * old_cols), old_cols);
+        }
+
+        int copy_rows = old_rows;
+        if (copy_rows > g_rows) copy_rows = g_rows;
+        int copy_cols = old_cols < g_cols ? old_cols : g_cols;
+        for (int r = 0; r < copy_rows; r++) {
+            CharCell *src = old_cells + ((row_start + r) * old_cols);
+            CharCell *dst = s->cells + (r * g_cols);
+            for (int c = 0; c < copy_cols; c++) {
+                dst[c] = src[c];
+            }
+        }
+
+        s->cursor_row = old_cursor_row - row_start;
+        if (old_rows <= g_rows) s->cursor_row = old_cursor_row;
+        if (s->cursor_row < 0) s->cursor_row = 0;
+        if (s->cursor_row >= g_rows) s->cursor_row = g_rows - 1;
+
+        s->cursor_col = old_cursor_col;
+        if (s->cursor_col < 0) s->cursor_col = 0;
+        if (s->cursor_col >= g_cols) s->cursor_col = g_cols - 1;
+
+        if (old_scroll_offset == 0) {
+            s->scroll_offset = 0;
+        } else {
+            int new_total_lines = s->scroll_count + g_rows;
+            int desired_bottom = desired_top_line + (g_rows - 1);
+            s->scroll_offset = (new_total_lines - 1) - desired_bottom;
+        }
+        session_adjust_scroll(s, 0);
+
+        if (old_cells) free(old_cells);
+    }
+}
+
+static void draw_tabs(void) {
+    if (g_tab_count <= 0) return;
+    ui_draw_rect(g_win, 0, 0, g_win_w, TAB_BAR_H, 0xFF1A1A1A);
+    int tab_w = get_tab_width();
+    for (int i = 0; i < g_tab_count; i++) {
+        int x = i * tab_w;
+        uint32_t bg = (i == g_active_tab) ? 0xFF333333 : 0xFF222222;
+        ui_draw_rect(g_win, x, 0, tab_w - 2, TAB_BAR_H, bg);
+        int close_size = TAB_CLOSE_W;
+        int close_x = x + tab_w - TAB_CLOSE_PAD - close_size;
+        int close_y = (TAB_BAR_H - close_size) / 2;
+        uint32_t close_bg = (i == g_active_tab) ? 0xFF444444 : 0xFF333333;
+        ui_draw_rect(g_win, close_x, close_y, close_size, close_size, close_bg);
+        ui_draw_string(g_win, close_x + 2, close_y + 1, "x", 0xFFFFFFFF);
+        char title[64];
+        char label[64];
+        get_tab_title(&g_tabs[i], title, sizeof(title));
+        int text_w = tab_w - 10 - (TAB_CLOSE_PAD + TAB_CLOSE_W);
+        int max_chars = text_w / CHAR_W;
+        if (max_chars < 4) max_chars = 4;
+        truncate_label(title, label, max_chars);
+        ui_draw_string(g_win, x + 6, 4, label, 0xFFFFFFFF);
+    }
+}
+
+static void draw_session(TerminalSession *s) {
+    int base_y = TAB_BAR_H;
+    ui_draw_rect(g_win, 0, base_y, g_win_w, g_win_h - base_y, s->bg_color);
+
+    int max_offset = scrollback_max_offset(s);
+    if (s->scroll_offset > max_offset) s->scroll_offset = max_offset;
+    int total_lines = s->scroll_count + g_rows;
+    int bottom_line = total_lines - 1 - s->scroll_offset;
+    int top_line = bottom_line - (g_rows - 1);
+
+    for (int row = 0; row < g_rows; row++) {
+        int line_index = top_line + row;
+        CharCell *line = NULL;
+        int line_cols = 0;
+        if (line_index >= 0 && line_index < s->scroll_count) {
+            line = scrollback_get_line(s, line_index, &line_cols);
+        } else if (line_index >= s->scroll_count && line_index < total_lines) {
+            int live_row = line_index - s->scroll_count;
+            if (live_row >= 0 && live_row < g_rows) {
+                line = s->cells + (live_row * g_cols);
+                line_cols = g_cols;
+            }
+        }
+        for (int col = 0; col < g_cols; col++) {
+            char ch = ' ';
+            uint32_t color = s->fg_color;
+            if (line && col < line_cols) {
+                ch = line[col].c;
+                if (ch == 0) ch = ' ';
+                color = line[col].color;
+            }
+            char str[2] = { ch, 0 };
+            int x = col * CHAR_W;
+            int y = base_y + row * g_line_h;
+            ui_draw_string_bitmap(g_win, x, y, str, color);
+        }
+    }
+
+    if (s->scroll_offset == 0) {
+        int cx = s->cursor_col * CHAR_W;
+        int cy = base_y + s->cursor_row * g_line_h;
+        ui_draw_rect(g_win, cx, cy + g_line_h - 2, CHAR_W, 2, 0xFFFFFFFF);
+    }
+
+    ui_mark_dirty(g_win, 0, 0, g_win_w, g_win_h);
+}
+
+static void tab_init(TerminalSession *s, int tty_id, int bsh_pid) {
+    s->tty_id = tty_id;
+    s->bsh_pid = bsh_pid;
+    s->cells = (CharCell *)malloc(sizeof(CharCell) * g_cols * g_rows);
+    s->scrollback = (CharCell *)malloc(sizeof(CharCell) * SCROLLBACK_LINES * SCROLLBACK_COLS);
+    s->scroll_cols = (int *)malloc(sizeof(int) * SCROLLBACK_LINES);
+    s->cursor_row = 0;
+    s->cursor_col = 0;
+    s->ansi_state = 0;
+    s->ansi_param_count = 0;
+    s->saved_row = 0;
+    s->saved_col = 0;
+    session_reset_colors(s);
+    scrollback_init(s);
+    session_clear(s);
+}
+
+static void tab_free(TerminalSession *s) {
+    if (!s) return;
+    if (s->cells) {
+        free(s->cells);
+        s->cells = NULL;
+    }
+    if (s->scrollback) {
+        free(s->scrollback);
+        s->scrollback = NULL;
+    }
+    if (s->scroll_cols) {
+        free(s->scroll_cols);
+        s->scroll_cols = NULL;
+    }
+}
+
+static void close_tab(int idx) {
+    if (idx < 0 || idx >= g_tab_count) return;
+    TerminalSession *s = &g_tabs[idx];
+
+    sys_tty_kill_all(s->tty_id);
+    sys_tty_destroy(s->tty_id);
+
+    tab_free(s);
+
+    for (int i = idx; i < g_tab_count - 1; i++) {
+        g_tabs[i] = g_tabs[i + 1];
+    }
+    g_tab_count--;
+    if (g_tab_count <= 0) {
+        sys_exit(0);
+    }
+    if (g_active_tab > idx) {
+        g_active_tab--;
+    } else if (g_active_tab == idx) {
+        if (g_active_tab >= g_tab_count) g_active_tab = g_tab_count - 1;
+    }
+}
+
+static int create_tab(void) {
+    if (g_tab_count >= MAX_TABS) return -1;
+
+    int tty_id = sys_tty_create();
+    if (tty_id < 0) return -1;
+
+    char start_dir[256];
+    start_dir[0] = 0;
+    if (g_tab_count > 0) {
+        TerminalSession *active = &g_tabs[g_active_tab];
+        if (active->bsh_pid > 0) {
+            read_proc_field(active->bsh_pid, "cwd", start_dir, sizeof(start_dir));
+        }
+    }
+
+    char args[32];
+    args[0] = 0;
+    str_append(args, "-t ", sizeof(args));
+    char id_buf[8];
+    itoa(tty_id, id_buf);
+    str_append(args, id_buf, sizeof(args));
+
+    if (start_dir[0]) {
+        str_append(args, " -d ", sizeof(args));
+        if (has_space(start_dir)) {
+            str_append(args, "\"", sizeof(args));
+            str_append(args, start_dir, sizeof(args));
+            str_append(args, "\"", sizeof(args));
+        } else {
+            str_append(args, start_dir, sizeof(args));
+        }
+    }
+
+    char bsh_path[128];
+    resolve_bsh_path(bsh_path, sizeof(bsh_path));
+    int pid = sys_spawn(bsh_path, args, SPAWN_FLAG_TERMINAL | SPAWN_FLAG_TTY_ID, tty_id);
+    if (pid < 0) return -1;
+
+    tab_init(&g_tabs[g_tab_count], tty_id, pid);
+    g_tab_count++;
+    return g_tab_count - 1;
+}
+
+static void handle_key(gui_event_t *ev) {
+    TerminalSession *s = &g_tabs[g_active_tab];
+    char c = (char)ev->arg1;
+    bool ctrl = ev->arg3 != 0;
+
+    if (ctrl && c == 't') {
+        int idx = create_tab();
+        if (idx >= 0) g_active_tab = idx;
+        return;
+    }
+
+    if (ctrl && c == 20) {
+        if (g_tab_count > 0) g_active_tab = (g_active_tab + 1) % g_tab_count;
+        return;
+    }
+
+    if (ctrl && c == 19) {
+        if (g_tab_count > 0) g_active_tab = (g_active_tab + g_tab_count - 1) % g_tab_count;
+        return;
+    }
+
+    if (ctrl && (c == 'c' || c == 'C')) {
+        int fg = sys_tty_get_fg(s->tty_id);
+        if (fg > 0) {
+            sys_tty_kill_fg(s->tty_id);
+            sys_tty_set_fg(s->tty_id, 0);
+            return;
+        }
+        char ch = 3;
+        sys_tty_write_in(s->tty_id, &ch, 1);
+        return;
+    }
+
+    sys_tty_write_in(s->tty_id, &c, 1);
+}
+
+int main(void) {
+    g_win = ui_window_create("Terminal", 60, 60, g_win_w, g_win_h);
+    ui_window_set_resizable(g_win, true);
+
+    int fh = (int)ui_get_font_height();
+    if (fh > 0) g_line_h = fh;
+    terminal_resize(g_win_w, g_win_h);
+
+    int idx = create_tab();
+    if (idx < 0) return 1;
+    g_active_tab = idx;
+
+    gui_event_t ev;
+    char out_buf[TTY_READ_CHUNK];
+
+    while (1) {
+        bool dirty = false;
+
+        for (int i = 0; i < g_tab_count; i++) {
+            TerminalSession *s = &g_tabs[i];
+            int read = 0;
+            while ((read = sys_tty_read_out(s->tty_id, out_buf, sizeof(out_buf))) > 0) {
+                session_process_output(s, out_buf, read);
+                if (i == g_active_tab) dirty = true;
+            }
+        }
+
+        while (ui_get_event(g_win, &ev)) {
+            if (ev.type == GUI_EVENT_CLOSE) {
+                for (int i = 0; i < g_tab_count; i++) {
+                    if (g_tabs[i].bsh_pid > 0) sys_kill(g_tabs[i].bsh_pid);
+                }
+                sys_exit(0);
+            } else if (ev.type == GUI_EVENT_KEY) {
+                handle_key(&ev);
+                dirty = true;
+            } else if (ev.type == GUI_EVENT_CLICK) {
+                if (ev.arg2 < TAB_BAR_H) {
+                    int tab_w = get_tab_width();
+                    int tab = ev.arg1 / tab_w;
+                    if (tab >= 0 && tab < g_tab_count) {
+                        int close_size = TAB_CLOSE_W;
+                        int close_x = tab * tab_w + tab_w - TAB_CLOSE_PAD - close_size;
+                        int close_y = (TAB_BAR_H - close_size) / 2;
+                        if (ev.arg1 >= close_x && ev.arg1 < close_x + close_size &&
+                            ev.arg2 >= close_y && ev.arg2 < close_y + close_size) {
+                            close_tab(tab);
+                        } else {
+                            g_active_tab = tab;
+                        }
+                        dirty = true;
+                    }
+                }
+            } else if (ev.type == GUI_EVENT_MOUSE_WHEEL) {
+                int lines = ev.arg1 * 3;
+                if (lines != 0) {
+                    session_adjust_scroll(&g_tabs[g_active_tab], lines);
+                    dirty = true;
+                }
+            } else if (ev.type == GUI_EVENT_RESIZE) {
+                terminal_resize(ev.arg1, ev.arg2);
+                dirty = true;
+            } else if (ev.type == GUI_EVENT_PAINT) {
+                dirty = true;
+            }
+        }
+
+        if (dirty) {
+            draw_tabs();
+            draw_session(&g_tabs[g_active_tab]);
+        } else {
+            sys_yield();
+        }
+    }
+
+    return 0;
+}

src/userland/gui/txtedit.c

@@ -40,6 +40,46 @@ static void editor_strcpy(char *dest, const char *src) {
     *dest = 0;
 }
 
+static int editor_strlen(const char *s) {
+    int len = 0;
+    while (s && s[len]) len++;
+    return len;
+}
+
+static void editor_strncat(char *dst, const char *src, int max_len) {
+    if (!dst || !src || max_len <= 0) return;
+    int dlen = editor_strlen(dst);
+    int i = 0;
+    while (dlen + i < max_len - 1 && src[i]) {
+        dst[dlen + i] = src[i];
+        i++;
+    }
+    dst[dlen + i] = 0;
+}
+
+static void editor_resolve_path(const char *input, char *out, int max_len) {
+    if (!out || max_len <= 0) return;
+    if (!input || input[0] == 0) {
+        out[0] = 0;
+        return;
+    }
+    if (input[0] == '/') {
+        editor_strcpy(out, input);
+        return;
+    }
+
+    char cwd[256];
+    if (sys_getcwd(cwd, sizeof(cwd)) < 0) {
+        editor_strcpy(out, input);
+        return;
+    }
+
+    editor_strcpy(out, cwd);
+    int len = editor_strlen(out);
+    if (len > 0 && out[len - 1] != '/') editor_strncat(out, "/", max_len);
+    editor_strncat(out, input, max_len);
+}
+
 static void editor_clear_all(void) {
     for (int i = 0; i < EDITOR_MAX_LINES; i++) {
         for (int j = 0; j < EDITOR_MAX_LINE_LEN; j++) {
@@ -71,9 +111,11 @@ static void editor_ensure_cursor_visible(void) {
 
 void editor_open_file(const char *filename) {
     editor_clear_all();
-    editor_strcpy(open_filename, filename);
+    char resolved[256];
+    editor_resolve_path(filename, resolved, sizeof(resolved));
+    editor_strcpy(open_filename, resolved);
     
-    int fd = sys_open(filename, "r");
+    int fd = sys_open(resolved, "r");
     if (fd < 0) {
         file_modified = 0;
         return;

src/userland/gui/viewer.c

@@ -41,6 +41,40 @@ static int viewer_strlen(const char *s) {
     return len;
 }
 
+static void viewer_strncat(char *dst, const char *src, int max_len) {
+    if (!dst || !src || max_len <= 0) return;
+    int dlen = viewer_strlen(dst);
+    int i = 0;
+    while (dlen + i < max_len - 1 && src[i]) {
+        dst[dlen + i] = src[i];
+        i++;
+    }
+    dst[dlen + i] = 0;
+}
+
+static void viewer_resolve_path(const char *input, char *out, int max_len) {
+    if (!out || max_len <= 0) return;
+    if (!input || input[0] == 0) {
+        out[0] = 0;
+        return;
+    }
+    if (input[0] == '/') {
+        viewer_strcpy(out, input);
+        return;
+    }
+
+    char cwd[256];
+    if (sys_getcwd(cwd, sizeof(cwd)) < 0) {
+        viewer_strcpy(out, input);
+        return;
+    }
+
+    viewer_strcpy(out, cwd);
+    int len = viewer_strlen(out);
+    if (len > 0 && out[len - 1] != '/') viewer_strncat(out, "/", max_len);
+    viewer_strncat(out, input, max_len);
+}
+
 static void viewer_scale_rgba_to_argb(const unsigned char *rgba, int src_w, int src_h,
                                       uint32_t *dst, int dst_w, int dst_h) {
     if (src_w == dst_w && src_h == dst_h) {
@@ -141,7 +175,9 @@ static void viewer_paint(ui_window_t win) {
 }
 
 void viewer_open_file(const char *path) {
-    int fd = sys_open(path, "r");
+    char resolved[256];
+    viewer_resolve_path(path, resolved, sizeof(resolved));
+    int fd = sys_open(resolved, "r");
     if (fd < 0) return;
 
     uint32_t file_size = sys_size(fd);
@@ -250,13 +286,13 @@ void viewer_open_file(const char *path) {
     stbi_image_free(rgba);
     free(buf);
 
-    viewer_strcpy(viewer_file_path, path);
+    viewer_strcpy(viewer_file_path, resolved);
 
-    const char *fname = path;
-    int plen = viewer_strlen(path);
+    const char *fname = resolved;
+    int plen = viewer_strlen(resolved);
     for (int i = plen - 1; i >= 0; i--) {
-        if (path[i] == '/') {
-            fname = &path[i + 1];
+        if (resolved[i] == '/') {
+            fname = &resolved[i + 1];
             break;
         }
     }

src/userland/libc/stdlib.c

@@ -202,9 +202,27 @@ char* strcat(char *dest, const char *src) {
     return ret;
 }
 
+char *strchr(const char *s, int c) {
+    while (*s != (char)c) {
+        if (!*s++) return NULL;
+    }
+    return (char *)s;
+}
+
+char *strstr(const char *haystack, const char *needle) {
+    size_t needle_len = strlen(needle);
+    if (!needle_len) return (char *)haystack;
+    while (*haystack) {
+        if (memcmp(haystack, needle, needle_len) == 0) return (char *)haystack;
+        haystack++;
+    }
+    return NULL;
+}
+
 int atoi(const char *nptr) {
     int res = 0;
     int sign = 1;
+    while (*nptr == ' ' || *nptr == '\t' || *nptr == '\n' || *nptr == '\r') nptr++;
     if (*nptr == '-') {
         sign = -1;
         nptr++;
@@ -311,7 +329,7 @@ int chdir(const char *path) {
 }
 
 char* getcwd(char *buf, int size) {
-    if (sys_getcwd(buf, size) == 0) return buf;
+    if (sys_getcwd(buf, size) >= 0) return buf;
     return NULL;
 }
 

src/userland/libc/stdlib.h

@@ -11,11 +11,9 @@ void* realloc(void* ptr, size_t size);
 void *memset(void *s, int c, size_t n);
 void *memcpy(void *dest, const void *src, size_t n);
 
-// String functions
-size_t strlen(const char *s);
-int strcmp(const char *s1, const char *s2);
-char* strcpy(char *dest, const char *src);
-char* strcat(char *dest, const char *src);
+#include "string.h"
+
+// Math/Utility functions
 int atoi(const char *nptr);
 void itoa(int n, char *buf);
 

src/userland/libc/string.h

@@ -7,5 +7,11 @@ void *memmove(void *dest, const void *src, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);
 void *memcpy(void *dest, const void *src, size_t n);
 void *memset(void *s, int c, size_t n);
+char *strchr(const char *s, int c);
+char *strstr(const char *haystack, const char *needle);
+size_t strlen(const char *s);
+int strcmp(const char *s1, const char *s2);
+char* strcpy(char *dest, const char *src);
+char* strcat(char *dest, const char *src);
 
 #endif

src/userland/libc/syscall.c

@@ -145,6 +145,46 @@ int sys_chdir(const char *path) {
     return (int)syscall2(SYS_FS, FS_CMD_CHDIR, (uint64_t)path);
 }
 
+int sys_tty_create(void) {
+    return (int)syscall2(SYS_SYSTEM, SYSTEM_CMD_TTY_CREATE, 0);
+}
+
+int sys_tty_read_out(int tty_id, char *buf, int len) {
+    return (int)syscall5(SYS_SYSTEM, SYSTEM_CMD_TTY_READ_OUT, (uint64_t)tty_id, (uint64_t)buf, (uint64_t)len, 0);
+}
+
+int sys_tty_write_in(int tty_id, const char *buf, int len) {
+    return (int)syscall5(SYS_SYSTEM, SYSTEM_CMD_TTY_WRITE_IN, (uint64_t)tty_id, (uint64_t)buf, (uint64_t)len, 0);
+}
+
+int sys_tty_read_in(char *buf, int len) {
+    return (int)syscall4(SYS_SYSTEM, SYSTEM_CMD_TTY_READ_IN, (uint64_t)buf, (uint64_t)len, 0);
+}
+
+int sys_spawn(const char *path, const char *args, uint64_t flags, uint64_t tty_id) {
+    return (int)syscall5(SYS_SYSTEM, SYSTEM_CMD_SPAWN, (uint64_t)path, (uint64_t)args, flags, (uint64_t)tty_id);
+}
+
+int sys_tty_set_fg(int tty_id, int pid) {
+    return (int)syscall4(SYS_SYSTEM, SYSTEM_CMD_TTY_SET_FG, (uint64_t)tty_id, (uint64_t)pid, 0);
+}
+
+int sys_tty_get_fg(int tty_id) {
+    return (int)syscall3(SYS_SYSTEM, SYSTEM_CMD_TTY_GET_FG, (uint64_t)tty_id, 0);
+}
+
+int sys_tty_kill_fg(int tty_id) {
+    return (int)syscall3(SYS_SYSTEM, SYSTEM_CMD_TTY_KILL_FG, (uint64_t)tty_id, 0);
+}
+
+int sys_tty_kill_all(int tty_id) {
+    return (int)syscall3(SYS_SYSTEM, SYSTEM_CMD_TTY_KILL_ALL, (uint64_t)tty_id, 0);
+}
+
+int sys_tty_destroy(int tty_id) {
+    return (int)syscall3(SYS_SYSTEM, SYSTEM_CMD_TTY_DESTROY, (uint64_t)tty_id, 0);
+}
+
 void sys_kill(int pid) {
     syscall1(SYS_KILL, (uint64_t)pid);
 }
@@ -251,10 +291,6 @@ void sys_yield(void) {
     syscall1(SYS_SYSTEM, SYSTEM_CMD_YIELD);
 }
 
-int sys_get_os_info(os_info_t *info) {
-    return (int)syscall5(SYS_SYSTEM, SYSTEM_CMD_GET_OS_INFO, (uint64_t)info, 0, 0, 0);
-}
-
 void sys_parallel_run(void (*fn)(void*), void **args, int count) {
     syscall5(SYS_SYSTEM, SYSTEM_CMD_PARALLEL_RUN, (uint64_t)fn, (uint64_t)args, (uint64_t)count, 0);
 }

src/userland/libc/syscall.h

@@ -44,8 +44,6 @@
 #define SYSTEM_CMD_REBOOT 12
 #define SYSTEM_CMD_SHUTDOWN 13
 #define SYSTEM_CMD_BEEP 14
-#define SYSTEM_CMD_MEMINFO 15
-#define SYSTEM_CMD_UPTIME 16
 #define SYSTEM_CMD_PCI_LIST 17
 #define SYSTEM_CMD_NETWORK_DHCP 18
 #define SYSTEM_CMD_NETWORK_GET_MAC 19
@@ -69,14 +67,25 @@
 #define SYSTEM_CMD_DNS_LOOKUP 37
 #define SYSTEM_CMD_SET_DNS 38
 #define SYSTEM_CMD_NET_UNLOCK 39
-#define SYSTEM_CMD_PROCESS_LIST 44
-#define SYSTEM_CMD_GET_CPU_MODEL 45
 #define SYSTEM_CMD_SLEEP 46
 #define SYSTEM_CMD_SET_RAW_MODE 41
 #define SYSTEM_CMD_TCP_RECV_NB 42
 #define SYSTEM_CMD_YIELD 43
-#define SYSTEM_CMD_GET_OS_INFO 49
 #define SYSTEM_CMD_PARALLEL_RUN 50
+#define SYSTEM_CMD_TTY_CREATE 60
+#define SYSTEM_CMD_TTY_READ_OUT 61
+#define SYSTEM_CMD_TTY_WRITE_IN 62
+#define SYSTEM_CMD_TTY_READ_IN 63
+#define SYSTEM_CMD_SPAWN 64
+#define SYSTEM_CMD_TTY_SET_FG 65
+#define SYSTEM_CMD_TTY_GET_FG 66
+#define SYSTEM_CMD_TTY_KILL_FG 67
+#define SYSTEM_CMD_TTY_KILL_ALL 68
+#define SYSTEM_CMD_TTY_DESTROY 69
+
+#define SPAWN_FLAG_TERMINAL 0x1
+#define SPAWN_FLAG_INHERIT_TTY 0x2
+#define SPAWN_FLAG_TTY_ID 0x4
 
 // Internal assembly entry into Ring 0
 extern uint64_t syscall0(uint64_t sys_num);
@@ -120,6 +129,17 @@ int sys_exists(const char *path);
 int sys_getcwd(char *buf, int size);
 int sys_chdir(const char *path);
 
+int sys_tty_create(void);
+int sys_tty_read_out(int tty_id, char *buf, int len);
+int sys_tty_write_in(int tty_id, const char *buf, int len);
+int sys_tty_read_in(char *buf, int len);
+int sys_spawn(const char *path, const char *args, uint64_t flags, uint64_t tty_id);
+int sys_tty_set_fg(int tty_id, int pid);
+int sys_tty_get_fg(int tty_id);
+int sys_tty_kill_fg(int tty_id);
+int sys_tty_kill_all(int tty_id);
+int sys_tty_destroy(int tty_id);
+
 typedef struct {
     char name[256];
     uint32_t size;
@@ -137,6 +157,7 @@ typedef struct {
     char name[64];
     uint64_t ticks;
     size_t used_memory;
+    uint32_t is_idle;
 } ProcessInfo;
 
 // Network API

src/userland/net/net.c

@@ -239,8 +239,8 @@ int main(int argc, char** argv) {
     }
     
     if (strcmp(argv[1], "init") == 0) {
-        if (sys_network_init() == 0) printf("Network OK\n");
-        else printf("Network Fail\n");
+        if (sys_network_init() == 0) printf("Network [OK]\n");
+        else printf("Network [FAIL]\n");
         return 0;
     }
 

src/userland/net/telnet.c

@@ -3,8 +3,6 @@
 // This header needs to maintain in any file it is present in, as per the GPL license terms.
 #include <stdlib.h>
 #include <syscall.h>
-#include "libc/libui.h"
-
 
 static int term_cols = 116;
 static int term_rows = 41;
@@ -80,13 +78,10 @@ static void telnet_handle_option(uint8_t cmd, uint8_t opt) {
 
         case WILL:
             if (opt == OPT_SUPPRESS_GA) {
-                // Good — accept suppressed GA (most BBS systems do this)
                 telnet_send_3(IAC, DO, OPT_SUPPRESS_GA);
             } else if (opt == OPT_ECHO) {
-                // Server will echo chars (remote echo) — accept it
                 telnet_send_3(IAC, DO, OPT_ECHO);
             } else {
-                // Refuse other server offers
                 telnet_send_3(IAC, DONT, opt);
             }
             break;
@@ -115,14 +110,13 @@ static void telnet_handle_sb_terminal_type(const uint8_t *sb_data, int sb_len) {
 }
 
 
-
 typedef enum {
     TS_DATA = 0,
     TS_IAC,
-    TS_CMD,         
-    TS_OPT,         
-    TS_SB,         
-    TS_SB_IAC     
+    TS_CMD,
+    TS_OPT,
+    TS_SB,
+    TS_SB_IAC
 } TelnetParseState;
 
 static TelnetParseState ts_state = TS_DATA;
@@ -133,7 +127,7 @@ static int ts_sb_pos = 0;
 
 // Output buffer — accumulate non-IAC bytes to write in bulk
 static char out_buf[4096];
-static int  out_pos = 0;
+static int out_pos = 0;
 
 static void flush_out(void) {
     if (out_pos > 0) {
@@ -159,7 +153,6 @@ static int telnet_process(const uint8_t *data, int len) {
                 if (b == IAC) {
                     ts_state = TS_IAC;
                 } else {
-                    // Pass directly to display
                     out_char((char)b);
                 }
                 break;
@@ -167,7 +160,6 @@ static int telnet_process(const uint8_t *data, int len) {
             case TS_IAC:
                 switch (b) {
                     case IAC:
-                        // Escaped IAC — literal 0xFF
                         out_char((char)0xFF);
                         ts_state = TS_DATA;
                         break;
@@ -233,10 +225,9 @@ static int telnet_process(const uint8_t *data, int len) {
     return 1;
 }
 
-
 static int map_key(char c, uint8_t *key_out) {
     if (c == 29) {
-        // Ctrl+] 
+        // Ctrl+]
         return -1;
     }
     if (c == 17) {
@@ -260,12 +251,12 @@ static int map_key(char c, uint8_t *key_out) {
         return 3;
     }
     if (c == '\n') {
-        // Enter 
+        // Enter
         key_out[0] = '\r'; key_out[1] = '\n';
         return 2;
     }
     if (c == '\b') {
-        // Backspace 
+        // Backspace
         key_out[0] = '\x7f';
         return 1;
     }
@@ -276,7 +267,7 @@ static int map_key(char c, uint8_t *key_out) {
 
 static int my_atoi(const char *s) {
     int v = 0;
-    while (*s >= '0' && *s <= '9') { v = v*10 + (*s - '0'); s++; }
+    while (*s >= '0' && *s <= '9') { v = v * 10 + (*s - '0'); s++; }
     return v;
 }
 
@@ -284,7 +275,7 @@ static int parse_ip(const char *s, net_ipv4_address_t *ip) {
     int part = 0, val = 0;
     while (*s) {
         if (*s >= '0' && *s <= '9') {
-            val = val*10 + (*s - '0');
+            val = val * 10 + (*s - '0');
             if (val > 255) return -1;
         } else if (*s == '.') {
             if (part > 3) return -1;
@@ -340,8 +331,6 @@ int main(int argc, char **argv) {
         return 1;
     }
     printf("Connected. Press Ctrl+] to disconnect.\n\n");
-    
-    sys_system(41, 1, 0, 0, 0); // SYSTEM_CMD_SET_RAW_MODE = 1
 
     uint8_t recv_buf[4096];
     int total = 0;
@@ -349,19 +338,17 @@ int main(int argc, char **argv) {
     int connected = 1;
 
     while (connected) {
-        gui_event_t ev;
-        while (ui_get_event(0, &ev)) { // win=0 for console proc
-            if (ev.type == GUI_EVENT_KEY) {
-                uint8_t key_data[16];
-                int key_len = map_key((char)ev.arg1, key_data);
-                if (key_len < 0) {
-                    connected = 0;
-                    break;
-                }
-                telnet_send(key_data, key_len);
+        char ch = 0;
+        int got = sys_tty_read_in(&ch, 1);
+        if (got > 0) {
+            uint8_t key_data[16];
+            int key_len = map_key(ch, key_data);
+            if (key_len < 0) {
+                connected = 0;
+                break;
             }
+            telnet_send(key_data, key_len);
         }
-        if (!connected) break;
 
         int len = sys_tcp_recv_nb(recv_buf, sizeof(recv_buf) - 1);
         if (len < 0) {
@@ -371,8 +358,7 @@ int main(int argc, char **argv) {
         }
         if (len == 0) {
             idle_count++;
-            // Don't timeout too fast if we are just waiting for user input
-            if (idle_count > 10000000) { 
+            if (idle_count > 10000000) {
                 printf("\r\n[Connection timed out]\r\n");
                 connected = 0;
                 break;
@@ -395,11 +381,7 @@ int main(int argc, char **argv) {
         }
     }
 
-    // Disable raw mode before exiting
-    sys_system(41, 0, 0, 0, 0);
-
     sys_tcp_close();
     printf("\r\n[Telnet session ended]\r\n");
     return 0;
 }
-

src/userland/sys/uptime.c

@@ -6,11 +6,18 @@
 
 int main(int argc, char **argv) {
     (void)argc; (void)argv;
-    uint64_t ticks = sys_system(16, 0, 0, 0, 0); // SYSTEM_CMD_UPTIME
-    uint64_t seconds = ticks / 100; // 100Hz timer assumed
-    uint64_t minutes = seconds / 60;
-    uint64_t hours = minutes / 60;
-    uint64_t days = hours / 24;
+    int fd = sys_open("/proc/uptime", "r");
+    if (fd < 0) return 1;
+    char buf[128];
+    int bytes = sys_read(fd, buf, 127);
+    sys_close(fd);
+    if (bytes <= 0) return 1;
+    buf[bytes] = 0;
+
+    int seconds = atoi(buf);
+    int minutes = seconds / 60;
+    int hours = minutes / 60;
+    int days = hours / 24;
     
     printf("Uptime: %d days, %d hours, %d minutes, %d seconds\n", 
            (int)days, (int)(hours % 24), (int)(minutes % 60), (int)(seconds % 60));

src/wm/explorer.c

@@ -5,10 +5,10 @@
 #include "graphics.h"
 #include "font_manager.h"
 #include "fat32.h"
+#include "vfs.h"
 #include "disk.h"
 #include "wm.h"
 #include "memory_manager.h"
-#include "cmd.h"
 #include "process.h"
 #define EXPLORER_ITEM_HEIGHT 80
 #define EXPLORER_ITEM_WIDTH 120
@@ -239,8 +239,8 @@ static void explorer_draw_icon_label(int x, int y, const char *label, uint32_t c
 
 static bool check_desktop_limit_explorer(Window *win) {
     ExplorerState *state = (ExplorerState*)win->data;
-    if (explorer_str_starts_with(state->current_path, "/Desktop")) {
-        if (explorer_strcmp(state->current_path, "/Desktop") == 0 || explorer_strcmp(state->current_path, "/Desktop/") == 0) { // Check if root desktop
+    if (explorer_str_starts_with(state->current_path, "/root/Desktop")) {
+        if (explorer_strcmp(state->current_path, "/root/Desktop") == 0 || explorer_strcmp(state->current_path, "/root/Desktop/") == 0) { // Check if root desktop
              if (state->item_count >= desktop_max_cols * (desktop_max_rows_per_col > 1 ? desktop_max_rows_per_col - 1 : 0)) {
                  state->dialog_state = DIALOG_ERROR;
                  explorer_strcpy(state->dialog_input, "Desktop is full!");
@@ -302,14 +302,14 @@ static void dialog_confirm_create_file(Window *win) {
     }
     explorer_strcat(full_path, state->dialog_input);
     
-    if (fat32_exists(full_path)) {
+    if (vfs_exists(full_path)) {
         state->dialog_state = DIALOG_CREATE_REPLACE_CONFIRM;
         return;
     }
     
-    FAT32_FileHandle *file = fat32_open(full_path, "w");
+    vfs_file_t *file = vfs_open(full_path, "w");
     if (file) {
-        fat32_close(file);
+        vfs_close(file);
         explorer_refresh_all();
     }
     
@@ -325,9 +325,9 @@ static void dialog_force_create_file(Window *win) {
     }
     explorer_strcat(full_path, state->dialog_input);
     
-    FAT32_FileHandle *file = fat32_open(full_path, "w");
+    vfs_file_t *file = vfs_open(full_path, "w");
     if (file) {
-        fat32_close(file);
+        vfs_close(file);
         explorer_refresh_all();
     }
     dialog_close(win);
@@ -346,7 +346,7 @@ static void dialog_confirm_create_folder(Window *win) {
     }
     explorer_strcat(full_path, state->dialog_input);
     
-    if (fat32_mkdir(full_path)) {
+    if (vfs_mkdir(full_path)) {
         explorer_refresh_all();
     }
     
@@ -354,18 +354,18 @@ static void dialog_confirm_create_folder(Window *win) {
 }
 
 bool explorer_delete_permanently(const char *path) {
-    if (fat32_is_directory(path)) {
+    if (vfs_is_directory(path)) {
         int capacity = 64;
-        FAT32_FileInfo *entries = (FAT32_FileInfo*)kmalloc(capacity * sizeof(FAT32_FileInfo));
+        vfs_dirent_t *entries = (vfs_dirent_t*)kmalloc(capacity * sizeof(vfs_dirent_t));
         if (!entries) return false;
 
-        int count = fat32_list_directory(path, entries, capacity);
+        int count = vfs_list_directory(path, entries, capacity);
         while (count == capacity) {
             capacity *= 2;
-            FAT32_FileInfo *new_entries = (FAT32_FileInfo*)krealloc(entries, capacity * sizeof(FAT32_FileInfo));
+            vfs_dirent_t *new_entries = (vfs_dirent_t*)krealloc(entries, capacity * sizeof(vfs_dirent_t));
             if (!new_entries) { kfree(entries); return false; }
             entries = new_entries;
-            count = fat32_list_directory(path, entries, capacity);
+            count = vfs_list_directory(path, entries, capacity);
         }
         
         for (int i = 0; i < count; i++) {
@@ -381,13 +381,13 @@ bool explorer_delete_permanently(const char *path) {
             if (entries[i].is_directory) {
                 explorer_delete_permanently(child_path);
             } else {
-                fat32_delete(child_path);
+                vfs_delete(child_path);
             }
         }
         kfree(entries);
-        return fat32_rmdir(path);
+        return vfs_rmdir(path);
     } else {
-        return fat32_delete(path);
+        return vfs_delete(path);
     }
 }
 
@@ -421,10 +421,10 @@ bool explorer_delete_recursive(const char *path) {
         char origin_path[FAT32_MAX_PATH];
         explorer_strcpy(origin_path, dest_path);
         explorer_strcat(origin_path, ".origin");
-        FAT32_FileHandle *fh = fat32_open(origin_path, "w");
+        vfs_file_t *fh = vfs_open(origin_path, "w");
         if (fh) {
-            fat32_write(fh, path, explorer_strlen(path));
-            fat32_close(fh);
+            vfs_write(fh, path, explorer_strlen(path));
+            vfs_close(fh);
         }
         
         explorer_copy_recursive(path, dest_path);
@@ -467,19 +467,19 @@ bool explorer_clipboard_has_content(void) {
 }
 
 static bool explorer_copy_recursive(const char *src_path, const char *dest_path) {
-    if (fat32_is_directory(src_path)) {
-        if (!fat32_mkdir(dest_path)) return false;
+    if (vfs_is_directory(src_path)) {
+        if (!vfs_mkdir(dest_path)) return false;
         int capacity = 64;
-        FAT32_FileInfo *files = (FAT32_FileInfo*)kmalloc(capacity * sizeof(FAT32_FileInfo));
+        vfs_dirent_t *files = (vfs_dirent_t*)kmalloc(capacity * sizeof(vfs_dirent_t));
         if (!files) return false;
         
-        int count = fat32_list_directory(src_path, files, capacity);
+        int count = vfs_list_directory(src_path, files, capacity);
         while (count == capacity) {
             capacity *= 2;
-            FAT32_FileInfo *new_files = (FAT32_FileInfo*)krealloc(files, capacity * sizeof(FAT32_FileInfo));
+            vfs_dirent_t *new_files = (vfs_dirent_t*)krealloc(files, capacity * sizeof(vfs_dirent_t));
             if (!new_files) { kfree(files); return false; }
             files = new_files;
-            count = fat32_list_directory(src_path, files, capacity);
+            count = vfs_list_directory(src_path, files, capacity);
         }
         for (int i = 0; i < count; i++) {
             if (explorer_strcmp(files[i].name, ".") == 0 || explorer_strcmp(files[i].name, "..") == 0) continue;
@@ -498,22 +498,22 @@ static bool explorer_copy_recursive(const char *src_path, const char *dest_path)
         kfree(files);
         return true;
     } else {
-        FAT32_FileHandle *src = fat32_open(src_path, "r");
-        FAT32_FileHandle *dst = fat32_open(dest_path, "w");
+        vfs_file_t *src = vfs_open(src_path, "r");
+        vfs_file_t *dst = vfs_open(dest_path, "w");
         bool success = false;
         if (src && dst) {
             uint8_t *buf = (uint8_t*)kmalloc(4096);
             if (buf) {
                 int bytes;
                 success = true;
-                while ((bytes = fat32_read(src, buf, 4096)) > 0) {
-                    if (fat32_write(dst, buf, bytes) != bytes) { success = false; break; }
+                while ((bytes = vfs_read(src, buf, 4096)) > 0) {
+                    if (vfs_write(dst, buf, bytes) != bytes) { success = false; break; }
                 }
                 kfree(buf);
             }
         }
-        if (src) fat32_close(src);
-        if (dst) fat32_close(dst);
+        if (src) vfs_close(src);
+        if (dst) vfs_close(dst);
         return success;
     }
 }
@@ -544,10 +544,10 @@ static void explorer_perform_paste(Window *win, const char *dest_dir) {
     explorer_copy_file_internal(clipboard_path, dest_dir);
     
     if (clipboard_action == 2) { 
-        if (fat32_is_directory(clipboard_path)) {
+        if (vfs_is_directory(clipboard_path)) {
             explorer_delete_permanently(clipboard_path);
         } else {
-            fat32_delete(clipboard_path);
+            vfs_delete(clipboard_path);
         }
         clipboard_action = 0;
     }
@@ -580,7 +580,7 @@ void explorer_clipboard_paste(Window *win, const char *dest_dir) {
     }
     explorer_strcat(dest_path, filename);
     
-    if (fat32_exists(dest_path)) {
+    if (vfs_exists(dest_path)) {
         state->dialog_state = DIALOG_REPLACE_CONFIRM;
         explorer_strcpy(state->dialog_dest_dir, dest_dir);
         return;
@@ -605,10 +605,10 @@ void explorer_create_shortcut(Window *win, const char *target_path) {
     explorer_strcat(shortcut_path, filename);
     explorer_strcat(shortcut_path, ".shortcut");
     
-    FAT32_FileHandle *fh = fat32_open(shortcut_path, "w");
+    vfs_file_t *fh = vfs_open(shortcut_path, "w");
     if (fh) {
-        fat32_write(fh, target_path, explorer_strlen(target_path));
-        fat32_close(fh);
+        vfs_write(fh, target_path, explorer_strlen(target_path));
+        vfs_close(fh);
         explorer_refresh_all();
     }
 }
@@ -680,18 +680,18 @@ static void explorer_restore_file(Window *win, int item_idx) {
     explorer_strcat(origin_file_path, ".origin");
     
     char original_path[FAT32_MAX_PATH] = {0};
-    FAT32_FileHandle *fh = fat32_open(origin_file_path, "r");
+    vfs_file_t *fh = vfs_open(origin_file_path, "r");
     if (fh) {
-        int len = fat32_read(fh, original_path, FAT32_MAX_PATH - 1);
+        int len = vfs_read(fh, original_path, FAT32_MAX_PATH - 1);
         if (len > 0) original_path[len] = 0;
-        fat32_close(fh);
+        vfs_close(fh);
     }
     
     if (original_path[0] == 0) return; 
     
     explorer_copy_recursive(recycle_path, original_path);
     explorer_delete_permanently(recycle_path);
-    fat32_delete(origin_file_path);
+    vfs_delete(origin_file_path);
     
     explorer_refresh_all();
 }
@@ -704,16 +704,17 @@ static void explorer_load_directory(Window *win, const char *path) {
     state->item_count = 0;
     
     int capacity = EXPLORER_INITIAL_CAPACITY;
-    FAT32_FileInfo *entries = (FAT32_FileInfo*)kmalloc(capacity * sizeof(FAT32_FileInfo));
+    vfs_dirent_t *entries = (vfs_dirent_t*)kmalloc(capacity * sizeof(vfs_dirent_t));
     if (!entries) return;
 
-    int count = fat32_list_directory(path, entries, capacity);
+    int count = vfs_list_directory(path, entries, capacity);
+    
     while (count == capacity) {
         capacity *= 2;
-        FAT32_FileInfo *new_entries = (FAT32_FileInfo*)krealloc(entries, capacity * sizeof(FAT32_FileInfo));
+        vfs_dirent_t *new_entries = (vfs_dirent_t*)krealloc(entries, capacity * sizeof(vfs_dirent_t));
         if (!new_entries) { kfree(entries); return; }
         entries = new_entries;
-        count = fat32_list_directory(path, entries, capacity);
+        count = vfs_list_directory(path, entries, capacity);
     }
     
     if (state->items_capacity < count) {
@@ -803,22 +804,22 @@ void explorer_open_directory(const char *path) {
     explorer_create_window(path);
 }
 
-static void explorer_open_target(const char *path) {
-    if (fat32_is_directory(path)) {
+void explorer_open_target(const char *path) {
+    if (vfs_is_directory(path)) {
         explorer_open_directory(path);
     } else {
         if (explorer_str_ends_with(path, ".elf")) {
-            process_create_elf(path, NULL);
+            process_create_elf(path, NULL, false, -1);
         } else if (explorer_str_ends_with(path, ".pdf")) {
-            process_create_elf("/bin/boredword.elf", path);
+            process_create_elf("/bin/boredword.elf", path, false, -1);
         } else if (explorer_is_markdown_file(path)) {
-            process_create_elf("/bin/markdown.elf", path);
+            process_create_elf("/bin/markdown.elf", path, false, -1);
         } else if (explorer_str_ends_with(path, ".pnt")) {
-            process_create_elf("/bin/paint.elf", path);
+            process_create_elf("/bin/paint.elf", path, false, -1);
         } else if (explorer_is_image_file(path)) {
-            process_create_elf("/bin/viewer.elf", path);
+            process_create_elf("/bin/viewer.elf", path, false, -1);
         } else {
-            process_create_elf("/bin/txtedit.elf", path);
+            process_create_elf("/bin/txtedit.elf", path, false, -1);
         }
     }
 }
@@ -842,17 +843,17 @@ static void explorer_open_item(Window *win, int index) {
     if (explorer_str_ends_with(state->items[index].name, ".shortcut")) {
         Window *target = NULL;
         if (explorer_strcmp(state->items[index].name, "Notepad.shortcut") == 0) {
-            process_create_elf("/bin/notepad.elf", NULL); return;
+            process_create_elf("/bin/notepad.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "Calculator.shortcut") == 0) {
-            process_create_elf("/bin/calculator.elf", NULL); return;
+            process_create_elf("/bin/calculator.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "Terminal.shortcut") == 0) {
-            target = &win_cmd; cmd_reset();
+            process_create_elf("/bin/terminal.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "Minesweeper.shortcut") == 0) {
-            process_create_elf("/bin/minesweeper.elf", NULL); return;
+            process_create_elf("/bin/minesweeper.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "Control Panel.shortcut") == 0 || explorer_strcmp(state->items[index].name, "Settings.shortcut") == 0) {
-            process_create_elf("/bin/settings.elf", NULL); return;
+            process_create_elf("/bin/settings.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "About.shortcut") == 0) {
-            process_create_elf("/bin/about.elf", NULL); return;
+            process_create_elf("/bin/about.elf", NULL, false, -1); return;
         } else if (explorer_strcmp(state->items[index].name, "Explorer.shortcut") == 0) {
             explorer_open_directory("/"); return;
         } else if (explorer_strcmp(state->items[index].name, "Recycle Bin.shortcut") == 0) {
@@ -864,11 +865,11 @@ static void explorer_open_item(Window *win, int index) {
             return;
         }
 
-        FAT32_FileHandle *fh = fat32_open(full_path, "r");
+        vfs_file_t *fh = vfs_open(full_path, "r");
         if (fh) {
             char buf[FAT32_MAX_PATH];
-            int len = fat32_read(fh, buf, 255);
-            fat32_close(fh);
+            int len = vfs_read(fh, buf, 255);
+            vfs_close(fh);
             if (len > 0) {
                 buf[len] = 0;
                 explorer_open_target(buf);
@@ -924,48 +925,11 @@ static void explorer_paint(Window *win) {
     
     draw_rect(offset_x, offset_y, win->w - 8, win->h - 28, COLOR_DARK_BG);
     
-    char drive_label[20];
-    char current_drv = 'A';
-    if (state->current_path[0] && state->current_path[1] == ':') {
-        current_drv = state->current_path[0];
-    } else if (state->current_path[0] && (state->current_path[0] >= 'A' && state->current_path[0] <= 'Z')) {
-        current_drv = state->current_path[0];
-    }
-    
-    const char *type_str = "RAM";
-    Disk *drv = disk_get_by_letter(current_drv);
-    if (drv) {
-        switch (drv->type) {
-            case DISK_TYPE_RAM:  type_str = "RAM";  break;
-            case DISK_TYPE_IDE:  type_str = "IDE";  break;
-            case DISK_TYPE_SATA: type_str = "SATA"; break;
-            case DISK_TYPE_USB:  type_str = "USB";  break;
-            default:             type_str = "???";  break;
-        }
-    }
-    
-    int di = 0;
-    drive_label[di++] = '[';
-    drive_label[di++] = ' ';
-    drive_label[di++] = current_drv;
-    drive_label[di++] = ':';
-    const char *ts = type_str;
-    while (*ts) drive_label[di++] = *ts++;
-    drive_label[di++] = ' ';
-    drive_label[di++] = ' ';
-    drive_label[di++] = ' ';
-    drive_label[di++] = ']';
-    drive_label[di] = 0;
-    
     ttf_font_t *ttf_ = graphics_get_current_ttf();
-    int drive_label_w = ttf_ ? font_manager_get_string_width(ttf_, drive_label) + 16 : 80;
-    if (drive_label_w < 60) drive_label_w = 60;
-    draw_rounded_rect_filled(win->x + 4, offset_y + 3, drive_label_w, 22, 5, COLOR_DARK_PANEL);
-    draw_string(win->x + 12, offset_y + 8, drive_label, COLOR_DARK_TEXT);
 
     int path_height = 22;
-    int path_x = offset_x + drive_label_w + 8;
-    int path_w = win->w - 16 - drive_label_w - 8;
+    int path_x = offset_x;
+    int path_w = win->w - 16 - 8;
     draw_rounded_rect_filled(path_x, offset_y + 3, path_w, path_height, 5, COLOR_DARK_PANEL);
     draw_string(path_x + 6, offset_y + 8, "Path:", COLOR_DARK_TEXT);
     int path_label_w = ttf_ ? font_manager_get_string_width(ttf_, "Path:") : 40;
@@ -1013,35 +977,6 @@ static void explorer_paint(Window *win) {
     graphics_pop_clipping(); // Pop content clipping
     graphics_pop_clipping(); // Pop main window clipping
     
-    if (state->drive_menu_visible) {
-        int menu_x = win->x + 4;
-        int menu_y = offset_y + 26;
-        int menu_w = 80;
-        int count = disk_get_count();
-        int menu_h = count * 25;
-        
-        draw_rounded_rect_filled(menu_x, menu_y, menu_w, menu_h, 6, COLOR_DARK_PANEL);
-        
-        for (int i = 0; i < count; i++) {
-            Disk *d = disk_get_by_index(i);
-            if (d) {
-                char buf[16];
-                buf[0] = d->letter;
-                buf[1] = ':';
-                buf[2] = ' ';
-                int n = 0; while(d->name[n] && n < 10) { buf[3+n] = d->name[n]; n++; }
-                buf[3+n] = 0;
-                
-                if (d->letter == current_drv) {
-                    draw_rounded_rect_filled(menu_x + 2, menu_y + i*25 + 2, menu_w - 4, 21, 4, 0xFF4A90E2);
-                    draw_string(menu_x + 5, menu_y + i*25 + 6, buf, COLOR_WHITE);
-                } else {
-                    draw_string(menu_x + 5, menu_y + i*25 + 6, buf, COLOR_DARK_TEXT);
-                }
-            }
-        }
-    }
-    
     if (state->dropdown_menu_visible) {
         int menu_x = dropdown_btn_x;
         int menu_y = offset_y + 26;
@@ -1315,7 +1250,7 @@ static void explorer_handle_click(Window *win, int x, int y) {
             if (new_path[explorer_strlen(new_path)-1] != '/') explorer_strcat(new_path, "/");
             explorer_strcat(new_path, state->dialog_input);
             
-            if (fat32_rename(state->dialog_target_path, new_path)) explorer_refresh_all();
+            if (vfs_rename(state->dialog_target_path, new_path)) explorer_refresh_all();
             dialog_close(win);
             return;
         }
@@ -1336,31 +1271,7 @@ static void explorer_handle_click(Window *win, int x, int y) {
         return; 
     }
     
-    if (state->drive_menu_visible) {
-        int menu_x = 4; 
-        int menu_y = 26; 
-        int menu_w = 80;
-        int count = disk_get_count();
-        int menu_h = count * 25;
-        
-        if (x >= menu_x && x < menu_x + menu_w && y >= menu_y && y < menu_y + menu_h) {
-            int idx = (y - menu_y) / 25;
-            Disk *d = disk_get_by_index(idx);
-            if (d) {
-                char path[4];
-                path[0] = d->letter;
-                path[1] = ':';
-                path[2] = '/';
-                path[3] = 0;
-                explorer_load_directory(win, path);
-            }
-            state->drive_menu_visible = false;
-            return;
-        }
-        
-        state->drive_menu_visible = false;
-        return;
-    }
+
     
     if (state->dropdown_menu_visible) {
         int dropdown_btn_x = win->w - 90;  
@@ -1396,17 +1307,11 @@ static void explorer_handle_click(Window *win, int x, int y) {
     }
     
     
-    int button_y = 3;
-    if (x >= 4 && x < 64 && y >= button_y && y < button_y + 22) {
-        state->drive_menu_visible = !state->drive_menu_visible;
-        state->dropdown_menu_visible = false; 
-        return;
-    }
+
     
     if (WIDGET_CLICKED(&state->btn_dropdown, win->x + x, win->y + y + 20)) {
         state->btn_dropdown.pressed = false;
         dropdown_menu_toggle(win);
-        state->drive_menu_visible = false; 
         return;
     }
     
@@ -1477,7 +1382,7 @@ static void explorer_handle_key(Window *win, char c, bool pressed) {
                 explorer_strcpy(new_path, state->current_path);
                 if (new_path[explorer_strlen(new_path)-1] != '/') explorer_strcat(new_path, "/");
                 explorer_strcat(new_path, state->dialog_input);
-                if (fat32_rename(state->dialog_target_path, new_path)) explorer_refresh(win);
+                if (vfs_rename(state->dialog_target_path, new_path)) explorer_refresh(win);
                 dialog_close(win);
             }
         } else if (c == 19) {
@@ -1699,7 +1604,7 @@ static void explorer_handle_file_context_menu_click(Window *win, int x, int y) {
         state->dialog_input_cursor = explorer_strlen(state->dialog_input);
         explorer_strcpy(state->dialog_target_path, full_path);
     } else if (clicked_action == 110) { // Open with Text Editor
-        process_create_elf("/bin/txtedit.elf", full_path);
+        process_create_elf("/bin/txtedit.elf", full_path, false, -1);
     } else if (clicked_action == ACTION_RESTORE) {
         explorer_restore_file(win, state->file_context_menu_item);
     } else if (clicked_action == ACTION_CREATE_SHORTCUT) {
@@ -1793,10 +1698,10 @@ static void explorer_perform_move_internal(Window *win, const char *source_path,
         char origin_path[FAT32_MAX_PATH];
         explorer_strcpy(origin_path, dest_path);
         explorer_strcat(origin_path, ".origin");
-        FAT32_FileHandle *fh = fat32_open(origin_path, "w");
+        vfs_file_t *fh = vfs_open(origin_path, "w");
         if (fh) {
-            fat32_write(fh, source_path, explorer_strlen(source_path));
-            fat32_close(fh);
+            vfs_write(fh, source_path, explorer_strlen(source_path));
+            vfs_close(fh);
         }
     }
 
@@ -1804,7 +1709,7 @@ static void explorer_perform_move_internal(Window *win, const char *source_path,
         char origin_path[FAT32_MAX_PATH];
         explorer_strcpy(origin_path, source_path);
         explorer_strcat(origin_path, ".origin");
-        fat32_delete(origin_path);
+        vfs_delete(origin_path);
     }
 
     if (explorer_copy_recursive(source_path, dest_path)) {
@@ -1838,7 +1743,7 @@ void explorer_import_file_to(Window *win, const char *source_path, const char *d
     if (dest_path[explorer_strlen(dest_path) - 1] != '/') explorer_strcat(dest_path, "/");
     explorer_strcat(dest_path, filename);
     
-    if (fat32_exists(dest_path) && explorer_strcmp(source_path, dest_path) != 0) {
+    if (vfs_exists(dest_path) && explorer_strcmp(source_path, dest_path) != 0) {
         explorer_strcpy(state->dialog_move_src, source_path);
         explorer_strcpy(state->dialog_dest_dir, dest_dir);
         state->dialog_state = DIALOG_REPLACE_MOVE_CONFIRM;

src/wm/explorer.h

@@ -12,7 +12,6 @@
 // External windows references (for opening other apps)
 extern Window win_explorer;
 extern Window win_editor;
-extern Window win_cmd;
 extern Window win_notepad;
 extern Window win_markdown;
 
@@ -70,10 +69,10 @@ typedef struct {
 
 void explorer_init(void);
 void explorer_reset(void);
-void explorer_open_directory(const char *path); // Creates a NEW window
+void explorer_open_directory(const char *path);
+void explorer_open_target(const char *path); 
+
 
-// Drag and Drop support
-// This now needs to find WHICH explorer window is under the mouse
 bool explorer_get_file_at(int screen_x, int screen_y, char *out_path, bool *is_dir);
 void explorer_import_file(Window *win, const char *source_path); // To focused or default
 void explorer_import_file_to(Window *win, const char *source_path, const char *dest_dir);
@@ -81,18 +80,15 @@ void explorer_refresh(Window *win);
 void explorer_refresh_all(void);
 void explorer_clear_click_state(Window *win);
 
-// String Helpers
 size_t explorer_strlen(const char *str);
 void explorer_strcpy(char *dest, const char *src);
 void explorer_strcat(char *dest, const char *src);
 
-// Clipboard (System-wide)
 void explorer_clipboard_copy(const char *path);
 void explorer_clipboard_cut(const char *path);
 void explorer_clipboard_paste(Window *win, const char *dest_dir);
 bool explorer_clipboard_has_content(void);
 
-// File Operations
 bool explorer_delete_permanently(const char *path);
 bool explorer_delete_recursive(const char *path);
 void explorer_create_shortcut(Window *win, const char *target_path);

src/wm/font_manager.c

@@ -330,6 +330,13 @@ int font_manager_get_string_width_scaled(ttf_font_t *font, const char *s, float
     while (*s) {
         int advance, lsb;
         uint32_t codepoint = utf8_decode(&s);
+        
+        if (codepoint == '\t') {
+            stbtt_GetCodepointHMetrics(info, ' ', &advance, &lsb);
+            width += (int)(advance * real_scale + 0.5f) * 4;
+            continue;
+        }
+        
         stbtt_fontinfo *current_info = info;
         float current_scale = real_scale;
         
@@ -350,6 +357,12 @@ int font_manager_get_codepoint_width_scaled(ttf_font_t *font, uint32_t codepoint
     stbtt_fontinfo *info = (stbtt_fontinfo *)font->info;
     float real_scale = stbtt_ScaleForPixelHeight(info, scale);
     
+    if (codepoint == '\t') {
+        int advance, lsb;
+        stbtt_GetCodepointHMetrics(info, ' ', &advance, &lsb);
+        return (int)(advance * real_scale + 0.5f) * 4;
+    }
+    
     if (stbtt_FindGlyphIndex(info, codepoint) == 0 && fallback_font) {
         info = (stbtt_fontinfo *)fallback_font->info;
         real_scale = stbtt_ScaleForPixelHeight(info, scale);