diff options
Diffstat (limited to 'disk')
| -rw-r--r-- | disk/part_efi.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/disk/part_efi.c b/disk/part_efi.c index 3d9306235c..51fa4a74ab 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -908,7 +908,7 @@ static int is_pmbr_valid(legacy_mbr * mbr) * gpt is a GPT header ptr, filled on return. * ptes is a PTEs ptr, filled on return. * - * Description: returns 1 if valid, 0 on error. + * Description: returns 1 if valid, 0 on error, 2 if ignored header * If valid, returns pointers to PTEs. */ static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, @@ -934,6 +934,12 @@ static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, return 0; } + /* Invalid but nothing to yell about. */ + if (le64_to_cpu(pgpt_head->signature) == GPT_HEADER_CHROMEOS_IGNORE) { + debug("ChromeOS 'IGNOREME' GPT header found and ignored\n"); + return 2; + } + if (validate_gpt_header(pgpt_head, (lbaint_t)lba, dev_desc->lba)) return 0; @@ -977,16 +983,24 @@ static int is_gpt_valid(struct blk_desc *dev_desc, u64 lba, static int find_valid_gpt(struct blk_desc *dev_desc, gpt_header *gpt_head, gpt_entry **pgpt_pte) { - if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, - gpt_head, pgpt_pte) != 1) { - printf("%s: *** ERROR: Invalid GPT ***\n", __func__); - if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), - gpt_head, pgpt_pte) != 1) { + int r; + + r = is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA, gpt_head, + pgpt_pte); + + if (r != 1) { + if (r != 2) + printf("%s: *** ERROR: Invalid GPT ***\n", __func__); + + if (is_gpt_valid(dev_desc, (dev_desc->lba - 1), gpt_head, + pgpt_pte) != 1) { printf("%s: *** ERROR: Invalid Backup GPT ***\n", __func__); return 0; } - printf("%s: *** Using Backup GPT ***\n", __func__); + if (r != 2) + printf("%s: *** Using Backup GPT ***\n", + __func__); } return 1; } |