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Diffstat (limited to '')
| -rw-r--r-- | libblkid/src/superblocks/linux_raid.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/libblkid/src/superblocks/linux_raid.c b/libblkid/src/superblocks/linux_raid.c index 360cd4e..156b0bf 100644 --- a/libblkid/src/superblocks/linux_raid.c +++ b/libblkid/src/superblocks/linux_raid.c @@ -187,15 +187,14 @@ static int raid1_verify_csum(blkid_probe pr, off_t off, { size_t csummed_size = sizeof(struct mdp1_super_block) + le32_to_cpu(mdp1->max_dev) * sizeof(mdp1->dev_roles[0]); - unsigned char *csummed = blkid_probe_get_buffer(pr, off, csummed_size); + const unsigned char *csummed = blkid_probe_get_buffer(pr, off, csummed_size); if (!csummed) return 1; - memset(csummed + offsetof(struct mdp1_super_block, sb_csum), 0, - sizeof(mdp1->sb_csum)); - uint64_t csum = 0; + csum -= le32_to_cpu(*(uint32_t *) (csummed + offsetof(struct mdp1_super_block, sb_csum))); + while (csummed_size >= 4) { csum += le32_to_cpu(*(uint32_t *) csummed); csummed_size -= 4; |