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pr: Add lslbk disk listing command (#24)

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* add lsblk disk listing command

* fix lsblk placeholder labels

* fix fat32 volume labels

* doc lsblk command

* add lsblk to help

* doc lsblk usage
This commit is contained in:
zeyad
2026-05-11 22:59:31 +06:00
committed by GitHub
parent a01a34b7f2
commit ed5f10eb7d
6 changed files with 481 additions and 3 deletions
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31
src/dev/disk_manager.c
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@@ -42,6 +42,32 @@ static int dm_strlen(const char *s) {
return n;
}
static void dm_copy_fat_label(char *dst, const uint8_t *src) {
int end = 11;
while (end > 0 && src[end - 1] == ' ') end--;
for (int i = 0; i < end && i < 31; i++) dst[i] = (char)src[i];
dst[end < 31 ? end : 31] = 0;
}
static void disk_load_fat32_label(Disk *disk) {
uint8_t *buffer;
FAT32_BootSector *bpb;
char label[32];
if (!disk || !disk->read_sector) return;
buffer = (uint8_t*)kmalloc(512);
if (!buffer) return;
if (disk->read_sector(disk, 0, buffer) == 0 && buffer[510] == 0x55 && buffer[511] == 0xAA) {
bpb = (FAT32_BootSector*)buffer;
dm_copy_fat_label(label, bpb->volume_label);
if (label[0]) dm_strcpy(disk->label, label);
}
kfree(buffer);
}
// === ATA Definitions (Legacy IDE PIO — kept as fallback) ===
#define ATA_PRIMARY_IO 0x1F0
@@ -387,6 +413,8 @@ void disk_register_partition(Disk *parent, uint32_t lba_offset, uint32_t sector_
part->is_partition = true;
part->registered = true;
if (is_fat32) disk_load_fat32_label(part);
disks[disk_count++] = part;
serial_write("[DISK] Registered /dev/");
@@ -567,6 +595,7 @@ static void parse_mbr_partitions(Disk *disk) {
serial_write("\n");
disk->is_fat32 = true;
disk->partition_lba_offset = 0;
disk_load_fat32_label(disk);
} else if (part_count == 0) {
serial_write("[DISK] No MBR partitions found on /dev/");
serial_write(disk->devname);
@@ -1040,4 +1069,4 @@ int disk_rescan(Disk *disk) {
parse_mbr_partitions(disk);
return 0;
}
}