CLI apps transfer to Userspace

src/kernel/userland/cp.c

@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <syscall.h>
+
+int main(int argc, char **argv) {
+    if (argc < 3) {
+        printf("Usage: cp <source> <dest>\n");
+        return 1;
+    }
+    
+    int fd_in = sys_open(argv[1], "r");
+    if (fd_in < 0) {
+        printf("Error: Cannot open source %s\n", argv[1]);
+        return 1;
+    }
+    
+    int fd_out = sys_open(argv[2], "w");
+    if (fd_out < 0) {
+        printf("Error: Cannot create destination %s\n", argv[2]);
+        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;
+}