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Centralize canonical SnapRAID block hashing semantics

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This commit is contained in:
Andrea Mazzoleni 2026-08-30 23:09:29 +02:00
parent 0ab885d8e5
commit 1a5b5728d2
7 changed files with 87 additions and 33 deletions
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20
cmdline/search.c
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@ -109,21 +109,21 @@ int search_file_compare(const void* void_arg, const void* void_data)
/* LCOV_EXCL_STOP */
}
/* compute the hash */
if (arg->prevhash)
memhash(state->prevhash, state->prevhashseed, buffer_hash, arg->buffer, arg->read_size);
else
memhash(state->hash, state->hashseed, buffer_hash, arg->buffer, arg->read_size);
/* check if the hash is matching */
if (memcmp(buffer_hash, arg->block->hash, BLOCK_HASH_SIZE) != 0)
return -1;
if (arg->read_size != state->block_size) {
/* fill the remaining with 0 */
memset(arg->buffer + arg->read_size, 0, state->block_size - arg->read_size);
}
/* compute the block hash from the canonical buffer */
if (arg->prevhash)
memhash_block(state->prevhash, state->prevhashseed, buffer_hash, arg->buffer, arg->read_size, state->block_size);
else
memhash_block(state->hash, state->hashseed, buffer_hash, arg->buffer, arg->read_size, state->block_size);
/* check if the hash is matching */
if (memcmp(buffer_hash, arg->block->hash, BLOCK_HASH_SIZE) != 0)
return -1;
return 0;
}