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Merge pull request #4849 from NixOS/ca/fix-nix-store--export

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Make the Nar hash non modulo
This commit is contained in:
Eelco Dolstra 2021-05-28 10:48:36 +02:00 committed by GitHub
parent cf1d4299a8 129384bcf3
commit b10256af51
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 29 additions and 39 deletions
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38
src/libstore/build/local-derivation-goal.cc
View file

@ -2354,32 +2354,19 @@ void LocalDerivationGoal::registerOutputs()
}
auto got = caSink.finish().first;
auto refs = rewriteRefs();
HashModuloSink narSink { htSHA256, oldHashPart };
dumpPath(actualPath, narSink);
auto narHashAndSize = narSink.finish();
ValidPathInfo newInfo0 {
worker.store.makeFixedOutputPath(
auto finalPath = worker.store.makeFixedOutputPath(
outputHash.method,
got,
outputPathName(drv->name, outputName),
refs.second,
refs.first),
narHashAndSize.first,
};
newInfo0.narSize = narHashAndSize.second;
newInfo0.ca = FixedOutputHash {
.method = outputHash.method,
.hash = got,
};
newInfo0.references = refs.second;
if (refs.first)
newInfo0.references.insert(newInfo0.path);
if (scratchPath != newInfo0.path) {
refs.first);
if (scratchPath != finalPath) {
// Also rewrite the output path
auto source = sinkToSource([&](Sink & nextSink) {
StringSink sink;
dumpPath(actualPath, sink);
RewritingSink rsink2(oldHashPart, std::string(newInfo0.path.hashPart()), nextSink);
RewritingSink rsink2(oldHashPart, std::string(finalPath.hashPart()), nextSink);
rsink2(*sink.s);
rsink2.flush();
});
@ -2389,6 +2376,21 @@ void LocalDerivationGoal::registerOutputs()
movePath(tmpPath, actualPath);
}
HashResult narHashAndSize = hashPath(htSHA256, actualPath);
ValidPathInfo newInfo0 {
finalPath,
narHashAndSize.first,
};
newInfo0.narSize = narHashAndSize.second;
newInfo0.ca = FixedOutputHash {
.method = outputHash.method,
.hash = got,
};
newInfo0.references = refs.second;
if (refs.first)
newInfo0.references.insert(newInfo0.path);
assert(newInfo0.ca);
return newInfo0;
};

20
src/libstore/local-store.cc
View file

@ -1152,17 +1152,13 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
/* While restoring the path from the NAR, compute the hash
of the NAR. */
std::unique_ptr<AbstractHashSink> hashSink;
if (!info.ca.has_value() || !info.references.count(info.path))
hashSink = std::make_unique<HashSink>(htSHA256);
else
hashSink = std::make_unique<HashModuloSink>(htSHA256, std::string(info.path.hashPart()));
HashSink hashSink(htSHA256);
TeeSource wrapperSource { source, *hashSink };
TeeSource wrapperSource { source, hashSink };
restorePath(realPath, wrapperSource);
auto hashResult = hashSink->finish();
auto hashResult = hashSink.finish();
if (hashResult.first != info.narHash)
throw Error("hash mismatch importing path '%s';\n specified: %s\n got: %s",
@ -1440,14 +1436,10 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
/* Check the content hash (optionally - slow). */
printMsg(lvlTalkative, "checking contents of '%s'", printStorePath(i));
std::unique_ptr<AbstractHashSink> hashSink;
if (!info->ca || !info->references.count(info->path))
hashSink = std::make_unique<HashSink>(info->narHash.type);
else
hashSink = std::make_unique<HashModuloSink>(info->narHash.type, std::string(info->path.hashPart()));
auto hashSink = HashSink(info->narHash.type);
dumpPath(Store::toRealPath(i), *hashSink);
auto current = hashSink->finish();
dumpPath(Store::toRealPath(i), hashSink);
auto current = hashSink.finish();
if (info->narHash != nullHash && info->narHash != current.first) {
printError("path '%s' was modified! expected hash '%s', got '%s'",

10
src/nix/verify.cc
View file

@ -97,15 +97,11 @@ struct CmdVerify : StorePathsCommand
if (!noContents) {
std::unique_ptr<AbstractHashSink> hashSink;
if (!info->ca)
hashSink = std::make_unique<HashSink>(info->narHash.type);
else
hashSink = std::make_unique<HashModuloSink>(info->narHash.type, std::string(info->path.hashPart()));
auto hashSink = HashSink(info->narHash.type);
store->narFromPath(info->path, *hashSink);
store->narFromPath(info->path, hashSink);
auto hash = hashSink->finish();
auto hash = hashSink.finish();
if (hash.first != info->narHash) {
corrupted++;