emo/thin-provisioning-tools
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[block-cache] Add check_raw() to bcache::validator

Browse Source
This commit is contained in:
Ming-Hung Tsai
2016-02-27 15:21:13 +08:00
parent 45e9916428
commit 778c153c1e
9 changed files with 74 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
caching/superblock.cc
View File

@@ -292,6 +292,15 @@ namespace validator {
throw checksum_error("bad checksum in superblock");
}
virtual bool check_raw(void const *raw) const {
superblock_disk const *sbd = reinterpret_cast<superblock_disk const *>(raw);
crc32c sum(SUPERBLOCK_CSUM_SEED);
sum.append(&sbd->flags, MD_BLOCK_SIZE - sizeof(uint32_t));
if (sum.get_sum() != to_cpu<uint32_t>(sbd->csum))
return false;
return true;
}
virtual void prepare(void *raw, block_address location) const {
superblock_disk *sbd = reinterpret_cast<superblock_disk *>(raw);
crc32c sum(SUPERBLOCK_CSUM_SEED);