diff options
Diffstat (limited to 'block/partitions/efi.c')
| -rw-r--r-- | block/partitions/efi.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/block/partitions/efi.c b/block/partitions/efi.c index 1eb09ee5311b..dc51f467a560 100644 --- a/block/partitions/efi.c +++ b/block/partitions/efi.c @@ -96,6 +96,7 @@ * - Code works, detects all the partitions. * ************************************************************/ +#include <linux/kernel.h> #include <linux/crc32.h> #include <linux/ctype.h> #include <linux/math64.h> @@ -222,11 +223,16 @@ check_hybrid: * the disk size. * * Hybrid MBRs do not necessarily comply with this. + * + * Consider a bad value here to be a warning to support dd'ing + * an image from a smaller disk to a larger disk. */ if (ret == GPT_MBR_PROTECTIVE) { sz = le32_to_cpu(mbr->partition_record[part].size_in_lba); if (sz != (uint32_t) total_sectors - 1 && sz != 0xFFFFFFFF) - ret = 0; + pr_debug("GPT: mbr size in lba (%u) different than whole disk (%u).\n", + sz, min_t(uint32_t, + total_sectors - 1, 0xFFFFFFFF)); } done: return ret; @@ -710,8 +716,8 @@ int efi_partition(struct parsed_partitions *state) efi_guid_unparse(&ptes[i].unique_partition_guid, info->uuid); /* Naively convert UTF16-LE to 7 bits. */ - label_max = min(sizeof(info->volname) - 1, - sizeof(ptes[i].partition_name)); + label_max = min(ARRAY_SIZE(info->volname) - 1, + ARRAY_SIZE(ptes[i].partition_name)); info->volname[label_max] = 0; while (label_count < label_max) { u8 c = ptes[i].partition_name[label_count] & 0xff; |