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

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Ming-Hung Tsai
2016-02-27 15:21:13 +08:00
parent 45e9916428
commit 778c153c1e
9 changed files with 74 additions and 1 deletions
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18
persistent-data/space-maps/disk.cc
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@@ -50,6 +50,15 @@ namespace {
throw checksum_error("bad block nr in space map bitmap");
}
virtual bool check_raw(void const *raw) const {
bitmap_header const *data = reinterpret_cast<bitmap_header const *>(raw);
crc32c sum(BITMAP_CSUM_XOR);
sum.append(&data->not_used, MD_BLOCK_SIZE - sizeof(uint32_t));
if (sum.get_sum() != to_cpu<uint32_t>(data->csum))
return false;
return true;
}
virtual void prepare(void *raw, block_address location) const {
bitmap_header *data = reinterpret_cast<bitmap_header *>(raw);
data->blocknr = to_disk<base::le64, uint64_t>(location);
@@ -77,6 +86,15 @@ namespace {
throw checksum_error("bad block nr in metadata index block");
}
virtual bool check_raw(void const *raw) const {
metadata_index const *mi = reinterpret_cast<metadata_index const *>(raw);
crc32c sum(INDEX_CSUM_XOR);
sum.append(&mi->padding_, MD_BLOCK_SIZE - sizeof(uint32_t));
if (sum.get_sum() != to_cpu<uint32_t>(mi->csum_))
return false;
return true;
}
virtual void prepare(void *raw, block_address location) const {
metadata_index *mi = reinterpret_cast<metadata_index *>(raw);
mi->blocknr_ = to_disk<base::le64, uint64_t>(location);