diff options
| author | Colin Cross <ccross@android.com> | 2011-01-28 13:45:06 -0800 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-02-11 14:11:10 -0800 |
| commit | fd4194e5c3ab51f0eacdc115eeead02dbf8f4d88 (patch) | |
| tree | 1312d1bd0a666b3aa9d0a4f8a0c16a8189d91ade | |
| parent | e51ab3740df4c2880507045f999c4bde3563c6a2 (diff) | |
fs: partitions: efi: Add force_gpt_sector parameter
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>
| -rw-r--r-- | fs/partitions/efi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/partitions/efi.c b/fs/partitions/efi.c index 35bbbd279d73..f245c767ad4d 100644 --- a/fs/partitions/efi.c +++ b/fs/partitions/efi.c @@ -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; |