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sdutil Add list_part_dos command
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This commit is contained in:
Kamil Kowalczyk
2026-03-20 22:34:05 +01:00
parent 6278aadb2e
commit 187629b228
1 changed files with 36 additions and 3 deletions
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39
sdutil/sdutil.c
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@@ -8,8 +8,6 @@
#include <string.h> #include <string.h>
#include <system.h> #include <system.h>
#define COMMAND_MAX 32
struct dos_pte { struct dos_pte {
uint8_t drive_attrs; uint8_t drive_attrs;
uint8_t chs_start_addr[3]; uint8_t chs_start_addr[3];
@@ -98,11 +96,37 @@ static void start_part_dos (void) {
} }
} }
static void list_part_dos (const char* dev_name) {
struct dos_mbr mbr;
memset (&mbr, 0, sizeof (mbr));
size_t sector = 0;
size_t sector_count = 1;
int r = device_do (dev_name, XDRV_READ, &sector, &sector_count, &mbr, NULL);
mprintf ("Finished reading. Result: %s (%d)\n", str_status[r < 0 ? -r : r], r);
if (!(mbr.valid_sign[0] == 0x55 && mbr.valid_sign[1] == 0xAA)) {
mprintf ("ERROR invalid Master Boot Record!\n");
return;
}
/* clang-format off */
mprintf ("\n\n-------------------------------------------------------\n");
mprintf ("Summary (%s):\n", dev_name);
mprintf ("Partition 0: start LBA = %u, sector count = %zu\n",mbr.ptes[0].start_lba, mbr.ptes[0].sector_count);
mprintf ("Partition 1: start LBA = %u, sector count = %zu\n",mbr.ptes[1].start_lba, mbr.ptes[1].sector_count);
mprintf ("Partition 2: start LBA = %u, sector count = %zu\n",mbr.ptes[2].start_lba, mbr.ptes[2].sector_count);
mprintf ("Partition 3: start LBA = %u, sector count = %zu\n",mbr.ptes[3].start_lba, mbr.ptes[3].sector_count);
/* clang-format on */
}
void app_main (void) { void app_main (void) {
libprocess_self_init (); libprocess_self_init ();
char commandbuf[COMMAND_MAX]; char commandbuf[32];
commandbuf[0] = '\0'; commandbuf[0] = '\0';
char devnamebuf[64];
devnamebuf[0] = '\0';
if (env_get (process_get_pgid (), "C", (void*)commandbuf, sizeof (commandbuf)) != ST_OK) { if (env_get (process_get_pgid (), "C", (void*)commandbuf, sizeof (commandbuf)) != ST_OK) {
mprintf ("ERROR C=???. No command provided\n"); mprintf ("ERROR C=???. No command provided\n");
@@ -111,5 +135,14 @@ void app_main (void) {
if (strcmp (commandbuf, "part_dos") == 0) { if (strcmp (commandbuf, "part_dos") == 0) {
start_part_dos (); start_part_dos ();
} else if (strcmp (commandbuf, "list_part_dos") == 0) {
if (env_get (process_get_pgid (), "dev", (void*)devnamebuf, sizeof (devnamebuf)) != ST_OK) {
mprintf ("ERROR dev=???. No device name provided for list_part_dos\n");
return;
}
list_part_dos (devnamebuf);
} else {
mprintf ("ERROR C=%s. Unknown command\n", commandbuf);
} }
} }