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 | 20 ++++++++++++-------- 1 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/disk/part_dos.c b/disk/part_dos.c index aed0c77..3069f91 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" : "")); } @@ -107,7 +107,7 @@ 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; @@ -125,6 +125,10 @@ static void print_partition_extended(block_dev_desc_t *dev_desc, buffer[DOS_PART_MAGIC_OFFSET + 1]); return; } + + if (!ext_part_sector) + disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); + if(i==DOS_PBR) { printf (" 1\t\t 0\t%10ld\t%2x\n", dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]); @@ -140,7 +144,7 @@ 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! */ @@ -158,7 +162,7 @@ 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); } }
@@ -265,8 +269,8 @@ 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)