From: Stephen Warren swarren@nvidia.com
This information may be useful to compare against command "part uuid", or if you want to manually paste the information into the kernel command-line.
Signed-off-by: Stephen Warren swarren@nvidia.com --- disk/part_dos.c | 19 +++++++++++-------- 1 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/disk/part_dos.c b/disk/part_dos.c index 732187a..3fe901b 100644 --- a/disk/part_dos.c +++ b/disk/part_dos.c @@ -66,13 +66,13 @@ static inline int is_bootable(dos_partition_t *p) }
static void print_one_part(dos_partition_t *p, int ext_part_sector, - int part_num) + int part_num, unsigned int disksig) { int lba_start = ext_part_sector + le32_to_int (p->start4); int lba_size = le32_to_int (p->size4);
- printf("%3d\t%-10d\t%-10d\t%02x%s%s\n", - part_num, lba_start, lba_size, p->sys_ind, + printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n", + part_num, lba_start, lba_size, disksig, part_num, p->sys_ind, (is_extended(p->sys_ind) ? " Extd" : ""), (is_bootable(p) ? " Boot" : "")); } @@ -108,7 +108,7 @@ int test_part_dos (block_dev_desc_t *dev_desc) */ static void print_partition_extended(block_dev_desc_t *dev_desc, int ext_part_sector, int relative, - int part_num) + int part_num, unsigned int disksig) { ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); dos_partition_t *pt; @@ -127,6 +127,9 @@ static void print_partition_extended(block_dev_desc_t *dev_desc, return; }
+ if (!ext_part_sector) + disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); + /* Print all primary/logical partitions */ pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); for (i = 0; i < 4; i++, pt++) { @@ -137,7 +140,7 @@ static void print_partition_extended(block_dev_desc_t *dev_desc,
if ((pt->sys_ind != 0) && (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) { - print_one_part(pt, ext_part_sector, part_num); + print_one_part(pt, ext_part_sector, part_num, disksig); }
/* Reverse engr the fdisk part# assignment rule! */ @@ -155,7 +158,7 @@ static void print_partition_extended(block_dev_desc_t *dev_desc,
print_partition_extended(dev_desc, lba_start, ext_part_sector == 0 ? lba_start : relative, - part_num); + part_num, disksig); } }
@@ -262,8 +265,8 @@ static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part
void print_part_dos (block_dev_desc_t *dev_desc) { - printf("Part\tStart Sector\tNum Sectors\tType\n"); - print_partition_extended(dev_desc, 0, 0, 1); + printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n"); + print_partition_extended(dev_desc, 0, 0, 1, 0); }
int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)