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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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9
persistent-data/data-structures/array.h
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@ -43,6 +43,15 @@ namespace persistent_data {
throw checksum_error("bad block nr in array block");
}
virtual bool check_raw(void const *raw) const {
array_block_disk const *data = reinterpret_cast<array_block_disk const *>(raw);
crc32c sum(ARRAY_CSUM_XOR);
sum.append(&data->max_entries, 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 {
array_block_disk *data = reinterpret_cast<array_block_disk *>(raw);
data->blocknr = to_disk<base::le64, uint64_t>(location);