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* Don't complain if the stored hash of a path is zero (unknown).

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This commit is contained in:
Eelco Dolstra 2010-08-24 14:25:33 +00:00
parent f58f51f380
commit 034f608e00
1 changed files with 3 additions and 2 deletions
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5
src/libstore/local-store.cc
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@ -1022,10 +1022,11 @@ void LocalStore::exportPath(const Path & path, bool sign,
dumpPath(path, hashAndWriteSink); dumpPath(path, hashAndWriteSink);
/* Refuse to export paths that have changed. This prevents /* Refuse to export paths that have changed. This prevents
filesystem corruption from spreading to other machines. */ filesystem corruption from spreading to other machines.
Don't complain if the stored hash is zero (unknown). */
Hash hash = hashAndWriteSink.currentHash(); Hash hash = hashAndWriteSink.currentHash();
Hash storedHash = queryPathHash(path); Hash storedHash = queryPathHash(path);
if (hash != storedHash) if (hash != storedHash && storedHash != Hash(storedHash.type))
throw Error(format("hash of path `%1%' has changed from `%2%' to `%3%'!") % path throw Error(format("hash of path `%1%' has changed from `%2%' to `%3%'!") % path
% printHash(storedHash) % printHash(hash)); % printHash(storedHash) % printHash(hash));