github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-10 07:32:29 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

fs: partitions: efi: Add force_gpt_sector parameter

Browse Source 
force_gpt_sector=<sector> causes the GPT partition search to
look at the specified sector for a valid GPT header if the
GPT is not found at the beginning or the end of the block
device.

Change-Id: I9b5f85ce24719c0538d42ec5a94344c7f6556b2b
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross 2011-01-28 13:45:06 -08:00
parent e51ab3740d
commit fd4194e5c3
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
fs/partitions/efi.c
View File

@ -105,6 +105,7 @@
* the partition tables happens after init too.
*/
static int force_gpt;
static u64 force_gpt_sector;
static int __init
force_gpt_fn(char *str)
{
@ -113,6 +114,13 @@ force_gpt_fn(char *str)
}
__setup("gpt", force_gpt_fn);
static int __init force_gpt_sector_fn(char *str)
{
force_gpt_sector = simple_strtoull(str, NULL, 0);
return 1;
}
__setup("gpt_sector=", force_gpt_sector_fn);
/**
* efi_crc32() - EFI version of crc32 function
@ -541,6 +549,9 @@ static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
if (!good_agpt && force_gpt)
good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
if (!good_agpt && force_gpt && force_gpt_sector)
good_agpt = is_gpt_valid(state, force_gpt_sector, &agpt, &aptes);
/* The obviously unsuccessful case */
if (!good_pgpt && !good_agpt)
goto fail;