diff options
| -rw-r--r-- | src/libexpr/primops.cc | 37 | ||||
| -rw-r--r-- | src/libstore/build/local-derivation-goal.cc | 54 | ||||
| -rw-r--r-- | src/libstore/content-address.cc | 137 | ||||
| -rw-r--r-- | src/libstore/content-address.hh | 47 | ||||
| -rw-r--r-- | src/libstore/daemon.cc | 10 | ||||
| -rw-r--r-- | src/libstore/derivations.cc | 56 | ||||
| -rw-r--r-- | src/libstore/derivations.hh | 8 | ||||
| -rw-r--r-- | src/libstore/local-store.cc | 2 | ||||
| -rw-r--r-- | src/libstore/misc.cc | 18 | ||||
| -rw-r--r-- | src/libstore/remote-store.cc | 20 | ||||
| -rw-r--r-- | src/libstore/remote-store.hh | 1 | ||||
| -rw-r--r-- | src/libstore/tests/derivation.cc | 25 | ||||
| -rw-r--r-- | tests/ca/text-hashed-output.nix | 29 | ||||
| -rw-r--r-- | tests/ca/text-hashed-output.sh | 29 | ||||
| -rw-r--r-- | tests/local.mk | 1 |
15 files changed, 341 insertions, 133 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 92bc7b8c7..b6476e006 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -1088,7 +1088,7 @@ drvName, Bindings * attrs, Value & v) bool isImpure = false; std::optional<std::string> outputHash; std::string outputHashAlgo; - std::optional<FileIngestionMethod> ingestionMethod; + std::optional<ContentAddressMethod> ingestionMethod; StringSet outputs; outputs.insert("out"); @@ -1101,6 +1101,7 @@ drvName, Bindings * attrs, Value & v) auto handleHashMode = [&](const std::string_view s) { if (s == "recursive") ingestionMethod = FileIngestionMethod::Recursive; else if (s == "flat") ingestionMethod = FileIngestionMethod::Flat; + else if (s == "text") ingestionMethod = TextHashMethod {}; else state.debugThrowLastTrace(EvalError({ .msg = hintfmt("invalid value '%s' for 'outputHashMode' attribute", s), @@ -1269,9 +1270,9 @@ drvName, Bindings * attrs, Value & v) })); /* Check whether the derivation name is valid. */ - if (isDerivation(drvName)) + if (isDerivation(drvName) && ingestionMethod != ContentAddressMethod { TextHashMethod { } }) state.debugThrowLastTrace(EvalError({ - .msg = hintfmt("derivation names are not allowed to end in '%s'", drvExtension), + .msg = hintfmt("derivation names are allowed to end in '%s' only if they produce a single derivation file", drvExtension), .errPos = state.positions[noPos] })); @@ -1289,21 +1290,17 @@ drvName, Bindings * attrs, Value & v) auto h = newHashAllowEmpty(*outputHash, parseHashTypeOpt(outputHashAlgo)); auto method = ingestionMethod.value_or(FileIngestionMethod::Flat); - auto outPath = state.store->makeFixedOutputPath(drvName, FixedOutputInfo { - .hash = { - .method = method, - .hash = h, - }, - .references = {}, - }); - drv.env["out"] = state.store->printStorePath(outPath); - drv.outputs.insert_or_assign("out", - DerivationOutput::CAFixed { - .hash = FixedOutputHash { - .method = method, - .hash = std::move(h), - }, - }); + + DerivationOutput::CAFixed dof { + .ca = ContentAddressWithReferences::fromParts( + std::move(method), + std::move(h), + // FIXME non-trivial fixed refs set + {}), + }; + + drv.env["out"] = state.store->printStorePath(dof.path(*state.store, drvName, "out")); + drv.outputs.insert_or_assign("out", std::move(dof)); } else if (contentAddressed || isImpure) { @@ -1321,13 +1318,13 @@ drvName, Bindings * attrs, Value & v) if (isImpure) drv.outputs.insert_or_assign(i, DerivationOutput::Impure { - .method = method, + .method = method.raw, .hashType = ht, }); else drv.outputs.insert_or_assign(i, DerivationOutput::CAFloating { - .method = method, + .method = method.raw, .hashType = ht, }); } diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc index 4fb7aa9d8..7cb80977d 100644 --- a/src/libstore/build/local-derivation-goal.cc +++ b/src/libstore/build/local-derivation-goal.cc @@ -2423,37 +2423,43 @@ DrvOutputs LocalDerivationGoal::registerOutputs() throw BuildError( "output path %1% without valid stats info", actualPath); - if (outputHash.method == FileIngestionMethod::Flat) { + if (outputHash.method == ContentAddressMethod { FileIngestionMethod::Flat } || + outputHash.method == ContentAddressMethod { TextHashMethod {} }) + { /* The output path should be a regular file without execute permission. */ if (!S_ISREG(st->st_mode) || (st->st_mode & S_IXUSR) != 0) throw BuildError( "output path '%1%' should be a non-executable regular file " - "since recursive hashing is not enabled (outputHashMode=flat)", + "since recursive hashing is not enabled (one of outputHashMode={flat,text} is true)", actualPath); } rewriteOutput(); /* FIXME optimize and deduplicate with addToStore */ std::string oldHashPart { scratchPath->hashPart() }; HashModuloSink caSink { outputHash.hashType, oldHashPart }; - switch (outputHash.method) { - case FileIngestionMethod::Recursive: - dumpPath(actualPath, caSink); - break; - case FileIngestionMethod::Flat: - readFile(actualPath, caSink); - break; - } + std::visit(overloaded { + [&](const TextHashMethod &) { + readFile(actualPath, caSink); + }, + [&](const FileIngestionMethod & m2) { + switch (m2) { + case FileIngestionMethod::Recursive: + dumpPath(actualPath, caSink); + break; + case FileIngestionMethod::Flat: + readFile(actualPath, caSink); + break; + } + }, + }, outputHash.method.raw); auto got = caSink.finish().first; ValidPathInfo newInfo0 { worker.store, outputPathName(drv->name, outputName), - FixedOutputInfo { - .hash = { - .method = outputHash.method, - .hash = got, - }, - .references = rewriteRefs(), - }, + ContentAddressWithReferences::fromParts( + outputHash.method, + std::move(got), + rewriteRefs()), Hash::dummy, }; if (*scratchPath != newInfo0.path) { @@ -2500,13 +2506,14 @@ DrvOutputs LocalDerivationGoal::registerOutputs() }, [&](const DerivationOutput::CAFixed & dof) { - auto newInfo0 = newInfoFromCA(DerivationOutput::CAFloating { - .method = dof.hash.method, - .hashType = dof.hash.hash.type, + auto wanted = dof.ca.getHash(); + + auto newInfo0 = newInfoFromCA(DerivationOutputCAFloating { + .method = dof.ca.getMethod(), + .hashType = wanted.type, }); /* Check wanted hash */ - const Hash & wanted = dof.hash.hash; assert(newInfo0.ca); auto got = newInfo0.ca->getHash(); if (wanted != got) { @@ -2519,6 +2526,11 @@ DrvOutputs LocalDerivationGoal::registerOutputs() wanted.to_string(SRI, true), got.to_string(SRI, true))); } + if (!newInfo.references.empty()) + delayedException = std::make_exception_ptr( + BuildError("illegal path references in fixed-output derivation '%s'", + worker.store.printStorePath(drvPath))); + return newInfo0; }, diff --git a/src/libstore/content-address.cc b/src/libstore/content-address.cc index 055b216db..8c04dd285 100644 --- a/src/libstore/content-address.cc +++ b/src/libstore/content-address.cc @@ -21,6 +21,26 @@ std::string makeFileIngestionPrefix(FileIngestionMethod m) } } +std::string ContentAddressMethod::renderPrefix() const { + return std::visit(overloaded { + [](TextHashMethod) -> std::string { return "text:"; }, + [](FileIngestionMethod m2) { + /* Not prefixed for back compat with things that couldn't produce text before. */ + return makeFileIngestionPrefix(m2); + }, + }, raw); +} + +ContentAddressMethod ContentAddressMethod::parsePrefix(std::string_view & m) +{ + ContentAddressMethod method = FileIngestionMethod::Flat; + if (splitPrefix(m, "r:")) + method = FileIngestionMethod::Recursive; + else if (splitPrefix(m, "text:")) + method = TextHashMethod {}; + return method; +} + std::string ContentAddress::render() const { return std::visit(overloaded { @@ -36,14 +56,14 @@ std::string ContentAddress::render() const }, raw); } -std::string ContentAddressMethod::render() const +std::string ContentAddressMethod::render(HashType ht) const { return std::visit(overloaded { - [](const TextHashMethod & th) { - return std::string{"text:"} + printHashType(htSHA256); + [&](const TextHashMethod & th) { + return std::string{"text:"} + printHashType(ht); }, - [](const FixedOutputHashMethod & fshm) { - return "fixed:" + makeFileIngestionPrefix(fshm.fileIngestionMethod) + printHashType(fshm.hashType); + [&](const FileIngestionMethod & fim) { + return "fixed:" + makeFileIngestionPrefix(fim) + printHashType(ht); } }, raw); } @@ -51,7 +71,7 @@ std::string ContentAddressMethod::render() const /** * Parses content address strings up to the hash. */ -static ContentAddressMethod parseContentAddressMethodPrefix(std::string_view & rest) +static std::pair<ContentAddressMethod, HashType> parseContentAddressMethodPrefix(std::string_view & rest) { std::string_view wholeInput { rest }; @@ -75,19 +95,19 @@ static ContentAddressMethod parseContentAddressMethodPrefix(std::string_view & r if (prefix == "text") { // No parsing of the ingestion method, "text" only support flat. HashType hashType = parseHashType_(); - if (hashType != htSHA256) - throw Error("text content address hash should use %s, but instead uses %s", - printHashType(htSHA256), printHashType(hashType)); - return TextHashMethod {}; + return { + TextHashMethod {}, + std::move(hashType), + }; } else if (prefix == "fixed") { // Parse method auto method = FileIngestionMethod::Flat; if (splitPrefix(rest, "r:")) method = FileIngestionMethod::Recursive; HashType hashType = parseHashType_(); - return FixedOutputHashMethod { - .fileIngestionMethod = method, - .hashType = std::move(hashType), + return { + std::move(method), + std::move(hashType), }; } else throw UsageError("content address prefix '%s' is unrecognized. Recogonized prefixes are 'text' or 'fixed'", prefix); @@ -96,25 +116,25 @@ static ContentAddressMethod parseContentAddressMethodPrefix(std::string_view & r ContentAddress ContentAddress::parse(std::string_view rawCa) { auto rest = rawCa; - ContentAddressMethod caMethod = parseContentAddressMethodPrefix(rest); - - return std::visit( - overloaded { - [&](TextHashMethod & thm) { - return ContentAddress(TextHash { - .hash = Hash::parseNonSRIUnprefixed(rest, htSHA256) - }); - }, - [&](FixedOutputHashMethod & fohMethod) { - return ContentAddress(FixedOutputHash { - .method = fohMethod.fileIngestionMethod, - .hash = Hash::parseNonSRIUnprefixed(rest, std::move(fohMethod.hashType)), - }); - }, - }, caMethod.raw); -} - -ContentAddressMethod ContentAddressMethod::parse(std::string_view caMethod) + auto [caMethod, hashType_] = parseContentAddressMethodPrefix(rest); + auto hashType = hashType_; // work around clang bug + + return std::visit(overloaded { + [&](TextHashMethod &) { + return ContentAddress(TextHash { + .hash = Hash::parseNonSRIUnprefixed(rest, hashType) + }); + }, + [&](FileIngestionMethod & fim) { + return ContentAddress(FixedOutputHash { + .method = fim, + .hash = Hash::parseNonSRIUnprefixed(rest, hashType), + }); + }, + }, caMethod.raw); +} + +std::pair<ContentAddressMethod, HashType> ContentAddressMethod::parse(std::string_view caMethod) { std::string asPrefix = std::string{caMethod} + ":"; // parseContentAddressMethodPrefix takes its argument by reference @@ -134,6 +154,42 @@ std::string renderContentAddress(std::optional<ContentAddress> ca) return ca ? ca->render() : ""; } +ContentAddressWithReferences ContentAddressWithReferences::fromParts( + ContentAddressMethod method, Hash hash, StoreReferences refs) +{ + return std::visit(overloaded { + [&](TextHashMethod _) -> ContentAddressWithReferences { + if (refs.self) + throw UsageError("Cannot have a self reference with text hashing scheme"); + return TextInfo { + .hash = { .hash = std::move(hash) }, + .references = std::move(refs.others), + }; + }, + [&](FileIngestionMethod m2) -> ContentAddressWithReferences { + return FixedOutputInfo { + .hash = { + .method = m2, + .hash = std::move(hash), + }, + .references = std::move(refs), + }; + }, + }, method.raw); +} + +ContentAddressMethod ContentAddressWithReferences::getMethod() const +{ + return std::visit(overloaded { + [](const TextInfo & th) -> ContentAddressMethod { + return TextHashMethod {}; + }, + [](const FixedOutputInfo & fsh) -> ContentAddressMethod { + return fsh.hash.method; + }, + }, raw); +} + const Hash & ContentAddress::getHash() const { return std::visit(overloaded { @@ -173,4 +229,21 @@ ContentAddressWithReferences ContentAddressWithReferences::withoutRefs(const Con }, ca.raw); } +Hash ContentAddressWithReferences::getHash() const +{ + return std::visit(overloaded { + [](const TextInfo & th) { + return th.hash.hash; + }, + [](const FixedOutputInfo & fsh) { + return fsh.hash.hash; + }, + }, raw); +} + +std::string ContentAddressWithReferences::printMethodAlgo() const { + return getMethod().renderPrefix() + + printHashType(getHash().type); +} + } diff --git a/src/libstore/content-address.hh b/src/libstore/content-address.hh index 737bf9a41..7704d2f00 100644 --- a/src/libstore/content-address.hh +++ b/src/libstore/content-address.hh @@ -45,13 +45,6 @@ enum struct FileIngestionMethod : uint8_t { */ std::string makeFileIngestionPrefix(FileIngestionMethod m); -struct FixedOutputHashMethod { - FileIngestionMethod fileIngestionMethod; - HashType hashType; - - GENERATE_CMP(FixedOutputHashMethod, me->fileIngestionMethod, me->hashType); -}; - /** * An enumeration of all the ways we can serialize file system objects. * @@ -64,7 +57,7 @@ struct ContentAddressMethod { typedef std::variant< TextHashMethod, - FixedOutputHashMethod + FileIngestionMethod > Raw; Raw raw; @@ -76,9 +69,23 @@ struct ContentAddressMethod : raw(std::forward<decltype(arg)>(arg)...) { } - static ContentAddressMethod parse(std::string_view rawCaMethod); - std::string render() const; + /** + * Parse and pretty print the algorithm which indicates how the files + * were ingested, with the the fixed output case not prefixed for back + * compat. + */ + static ContentAddressMethod parsePrefix(std::string_view & m); + + std::string renderPrefix() const; + + /** + * Parse and pretty print a content addressing method and hash type in a + * nicer way, prefixing both cases. + */ + static std::pair<ContentAddressMethod, HashType> parse(std::string_view rawCaMethod); + + std::string render(HashType ht) const; }; @@ -247,6 +254,26 @@ struct ContentAddressWithReferences * assuming no references in all cases. */ static ContentAddressWithReferences withoutRefs(const ContentAddress &); + + /** + * Create a ContentAddressWithReferences from 3 parts: + * + * @param method Way ingesting the file system data. + * + * @param hash Hash of ingested file system data. + * + * @param refs References to other store objects or oneself. + * + * Do note that not all combinations are supported. + */ + static ContentAddressWithReferences fromParts( + ContentAddressMethod method, Hash hash, StoreReferences refs); + + ContentAddressMethod getMethod() const; + + Hash getHash() const; + + std::string printMethodAlgo() const; }; } diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc index 0169eef1a..0e2169035 100644 --- a/src/libstore/daemon.cc +++ b/src/libstore/daemon.cc @@ -401,18 +401,22 @@ static void performOp(TunnelLogger * logger, ref<Store> store, logger->startWork(); auto pathInfo = [&]() { // NB: FramedSource must be out of scope before logger->stopWork(); - ContentAddressMethod contentAddressMethod = ContentAddressMethod::parse(camStr); + auto [contentAddressMethod, hashType_] = ContentAddressMethod::parse(camStr); + auto hashType = hashType_; // work around clang bug FramedSource source(from); // TODO this is essentially RemoteStore::addCAToStore. Move it up to Store. return std::visit(overloaded { [&](const TextHashMethod &) { + if (hashType != htSHA256) + throw UnimplementedError("Only SHA-256 is supported for adding text-hashed data, but '%1' was given", + printHashType(hashType)); // We could stream this by changing Store std::string contents = source.drain(); auto path = store->addTextToStore(name, contents, refs, repair); return store->queryPathInfo(path); }, - [&](const FixedOutputHashMethod & fohm) { - auto path = store->addToStoreFromDump(source, name, fohm.fileIngestionMethod, fohm.hashType, repair, refs); + [&](const FileIngestionMethod & fim) { + auto path = store->addToStoreFromDump(source, name, fim, hashType, repair, refs); return store->queryPathInfo(path); }, }, contentAddressMethod.raw); diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc index fdb5f999a..aaae864f4 100644 --- a/src/libstore/derivations.cc +++ b/src/libstore/derivations.cc @@ -2,6 +2,7 @@ #include "store-api.hh" #include "globals.hh" #include "util.hh" +#include "split.hh" #include "worker-protocol.hh" #include "fs-accessor.hh" #include <boost/container/small_vector.hpp> @@ -35,9 +36,9 @@ std::optional<StorePath> DerivationOutput::path(const Store & store, std::string StorePath DerivationOutput::CAFixed::path(const Store & store, std::string_view drvName, std::string_view outputName) const { - return store.makeFixedOutputPath( + return store.makeFixedOutputPathFromCA( outputPathName(drvName, outputName), - { hash, {} }); + ca); } @@ -211,29 +212,27 @@ static StringSet parseStrings(std::istream & str, bool arePaths) static DerivationOutput parseDerivationOutput(const Store & store, - std::string_view pathS, std::string_view hashAlgo, std::string_view hash) + std::string_view pathS, std::string_view hashAlgo, std::string_view hashS) { if (hashAlgo != "") { - auto method = FileIngestionMethod::Flat; - if (hashAlgo.substr(0, 2) == "r:") { - method = FileIngestionMethod::Recursive; - hashAlgo = hashAlgo.substr(2); - } + ContentAddressMethod method = ContentAddressMethod::parsePrefix(hashAlgo); const auto hashType = parseHashType(hashAlgo); - if (hash == "impure") { + if (hashS == "impure") { experimentalFeatureSettings.require(Xp::ImpureDerivations); assert(pathS == ""); return DerivationOutput::Impure { .method = std::move(method), .hashType = std::move(hashType), }; - } else if (hash != "") { + } else if (hashS != "") { validatePath(pathS); + auto hash = Hash::parseNonSRIUnprefixed(hashS, hashType); return DerivationOutput::CAFixed { - .hash = FixedOutputHash { - .method = std::move(method), - .hash = Hash::parseNonSRIUnprefixed(hash, hashType), - }, + .ca = ContentAddressWithReferences::fromParts( + std::move(method), + std::move(hash), + // FIXME non-trivial fixed refs set + {}), }; } else { experimentalFeatureSettings.require(Xp::CaDerivations); @@ -384,12 +383,12 @@ std::string Derivation::unparse(const Store & store, bool maskOutputs, }, [&](const DerivationOutput::CAFixed & dof) { s += ','; printUnquotedString(s, maskOutputs ? "" : store.printStorePath(dof.path(store, name, i.first))); - s += ','; printUnquotedString(s, dof.hash.printMethodAlgo()); - s += ','; printUnquotedString(s, dof.hash.hash.to_string(Base16, false)); + s += ','; printUnquotedString(s, dof.ca.printMethodAlgo()); + s += ','; printUnquotedString(s, dof.ca.getHash().to_string(Base16, false)); }, [&](const DerivationOutput::CAFloating & dof) { s += ','; printUnquotedString(s, ""); - s += ','; printUnquotedString(s, makeFileIngestionPrefix(dof.method) + printHashType(dof.hashType)); + s += ','; printUnquotedString(s, dof.method.renderPrefix() + printHashType(dof.hashType)); s += ','; printUnquotedString(s, ""); }, [&](const DerivationOutput::Deferred &) { @@ -400,7 +399,7 @@ std::string Derivation::unparse(const Store & store, bool maskOutputs, [&](const DerivationOutputImpure & doi) { // FIXME s += ','; printUnquotedString(s, ""); - s += ','; printUnquotedString(s, makeFileIngestionPrefix(doi.method) + printHashType(doi.hashType)); + s += ','; printUnquotedString(s, doi.method.renderPrefix() + printHashType(doi.hashType)); s += ','; printUnquotedString(s, "impure"); } }, i.second.raw()); @@ -617,8 +616,8 @@ DrvHash hashDerivationModulo(Store & store, const Derivation & drv, bool maskOut for (const auto & i : drv.outputs) { auto & dof = std::get<DerivationOutput::CAFixed>(i.second.raw()); auto hash = hashString(htSHA256, "fixed:out:" - + dof.hash.printMethodAlgo() + ":" - + dof.hash.hash.to_string(Base16, false) + ":" + + dof.ca.printMethodAlgo() + ":" + + dof.ca.getHash().to_string(Base16, false) + ":" + store.printStorePath(dof.path(store, drv.name, i.first))); outputHashes.insert_or_assign(i.first, std::move(hash)); } @@ -768,12 +767,12 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr }, [&](const DerivationOutput::CAFixed & dof) { out << store.printStorePath(dof.path(store, drv.name, i.first)) - << dof.hash.printMethodAlgo() - << dof.hash.hash.to_string(Base16, false); + << dof.ca.printMethodAlgo() + << dof.ca.getHash().to_string(Base16, false); }, [&](const DerivationOutput::CAFloating & dof) { out << "" - << (makeFileIngestionPrefix(dof.method) + printHashType(dof.hashType)) + << (dof.method.renderPrefix() + printHashType(dof.hashType)) << ""; }, [&](const DerivationOutput::Deferred &) { @@ -783,7 +782,7 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr }, [&](const DerivationOutput::Impure & doi) { out << "" - << (makeFileIngestionPrefix(doi.method) + printHashType(doi.hashType)) + << (doi.method.renderPrefix() + printHashType(doi.hashType)) << "impure"; }, }, i.second.raw()); @@ -901,15 +900,16 @@ nlohmann::json DerivationOutput::toJSON( }, [&](const DerivationOutput::CAFixed & dof) { res["path"] = store.printStorePath(dof.path(store, drvName, outputName)); - res["hashAlgo"] = dof.hash.printMethodAlgo(); - res["hash"] = dof.hash.hash.to_string(Base16, false); + res["hashAlgo"] = dof.ca.printMethodAlgo(); + res["hash"] = dof.ca.getHash().to_string(Base16, false); + // FIXME print refs? }, [&](const DerivationOutput::CAFloating & dof) { - res["hashAlgo"] = makeFileIngestionPrefix(dof.method) + printHashType(dof.hashType); + res["hashAlgo"] = dof.method.renderPrefix() + printHashType(dof.hashType); }, [&](const DerivationOutput::Deferred &) {}, [&](const DerivationOutput::Impure & doi) { - res["hashAlgo"] = makeFileIngestionPrefix(doi.method) + printHashType(doi.hashType); + res["hashAlgo"] = doi.method.renderPrefix() + printHashType(doi.hashType); res["impure"] = true; }, }, raw()); diff --git a/src/libstore/derivations.hh b/src/libstore/derivations.hh index a5731f18d..dff6b472c 100644 --- a/src/libstore/derivations.hh +++ b/src/libstore/derivations.hh @@ -32,9 +32,9 @@ struct DerivationOutputInputAddressed struct DerivationOutputCAFixed { /** - * hash used for expected hash computation + * hash and refs used for expected hash computation */ - FixedOutputHash hash; + ContentAddressWithReferences ca; /* hash and refs used for validating output */ /** * Return the \ref StorePath "store path" corresponding to this output @@ -55,7 +55,7 @@ struct DerivationOutputCAFloating /** * How the file system objects will be serialized for hashing */ - FileIngestionMethod method; + ContentAddressMethod method; /** * How the serialization will be hashed @@ -78,7 +78,7 @@ struct DerivationOutputImpure /** * How the file system objects will be serialized for hashing */ - FileIngestionMethod method; + ContentAddressMethod method; /** * How the serialization will be hashed diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc index b49d5462b..63039e6ad 100644 --- a/src/libstore/local-store.cc +++ b/src/libstore/local-store.cc @@ -750,7 +750,7 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat envHasRightPath(doia.path, i.first); }, [&](const DerivationOutput::CAFixed & dof) { - StorePath path = makeFixedOutputPath(drvName, { dof.hash, {} }); + auto path = dof.path(*this, drvName, i.first); envHasRightPath(path, i.first); }, [&](const DerivationOutput::CAFloating &) { diff --git a/src/libstore/misc.cc b/src/libstore/misc.cc index 89148d415..39bdfec6e 100644 --- a/src/libstore/misc.cc +++ b/src/libstore/misc.cc @@ -86,9 +86,21 @@ void Store::computeFSClosure(const StorePath & startPath, std::optional<ContentAddress> getDerivationCA(const BasicDerivation & drv) { auto out = drv.outputs.find("out"); - if (out != drv.outputs.end()) { - if (const auto * v = std::get_if<DerivationOutput::CAFixed>(&out->second.raw())) - return v->hash; + if (out == drv.outputs.end()) + return std::nullopt; + if (auto dof = std::get_if<DerivationOutput::CAFixed>(&out->second)) { + return std::visit(overloaded { + [&](const TextInfo & ti) -> std::optional<ContentAddress> { + if (!ti.references.empty()) + return std::nullopt; + return ti.hash; + }, + [&](const FixedOutputInfo & fi) -> std::optional<ContentAddress> { + if (!fi.references.empty()) + return std::nullopt; + return fi.hash; + }, + }, dof->ca.raw); } return std::nullopt; } diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc index ac98e76d2..1c6b8530d 100644 --- a/src/libstore/remote-store.cc +++ b/src/libstore/remote-store.cc @@ -534,6 +534,7 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore( Source & dump, std::string_view name, ContentAddressMethod caMethod, + HashType hashType, const StorePathSet & references, RepairFlag repair) { @@ -545,7 +546,7 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore( conn->to << wopAddToStore << name - << caMethod.render(); + << caMethod.render(hashType); worker_proto::write(*this, conn->to, references); conn->to << repair; @@ -566,25 +567,28 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore( std::visit(overloaded { [&](const TextHashMethod & thm) -> void { + if (hashType != htSHA256) + throw UnimplementedError("Only SHA-256 is supported for adding text-hashed data, but '%1' was given", + printHashType(hashType)); std::string s = dump.drain(); conn->to << wopAddTextToStore << name << s; worker_proto::write(*this, conn->to, references); conn.processStderr(); }, - [&](const FixedOutputHashMethod & fohm) -> void { + [&](const FileIngestionMethod & fim) -> void { conn->to << wopAddToStore << name - << ((fohm.hashType == htSHA256 && fohm.fileIngestionMethod == FileIngestionMethod::Recursive) ? 0 : 1) /* backwards compatibility hack */ - << (fohm.fileIngestionMethod == FileIngestionMethod::Recursive ? 1 : 0) - << printHashType(fohm.hashType); + << ((hashType == htSHA256 && fim == FileIngestionMethod::Recursive) ? 0 : 1) /* backwards compatibility hack */ + << (fim == FileIngestionMethod::Recursive ? 1 : 0) + << printHashType(hashType); try { conn->to.written = 0; connections->incCapacity(); { Finally cleanup([&]() { connections->decCapacity(); }); - if (fohm.fileIngestionMethod == FileIngestionMethod::Recursive) { + if (fim == FileIngestionMethod::Recursive) { dump.drainInto(conn->to); } else { std::string contents = dump.drain(); @@ -615,7 +619,7 @@ ref<const ValidPathInfo> RemoteStore::addCAToStore( StorePath RemoteStore::addToStoreFromDump(Source & dump, std::string_view name, FileIngestionMethod method, HashType hashType, RepairFlag repair, const StorePathSet & references) { - return addCAToStore(dump, name, FixedOutputHashMethod{ .fileIngestionMethod = method, .hashType = hashType }, references, repair)->path; + return addCAToStore(dump, name, method, hashType, references, repair)->path; } @@ -715,7 +719,7 @@ StorePath RemoteStore::addTextToStore( RepairFlag repair) { StringSource source(s); - return addCAToStore(source, name, TextHashMethod{}, references, repair)->path; + return addCAToStore(source, name, TextHashMethod {}, htSHA256, references, repair)->path; } void RemoteStore::registerDrvOutput(const Realisation & info) diff --git a/src/libstore/remote-store.hh b/src/libstore/remote-store.hh index 999151239..3ff22ed66 100644 --- a/src/libstore/remote-store.hh +++ b/src/libstore/remote-store.hh @@ -73,6 +73,7 @@ public: Source & dump, std::string_view name, ContentAddressMethod caMethod, + HashType hashType, const StorePathSet & references, RepairFlag repair); diff --git a/src/libstore/tests/derivation.cc b/src/libstore/tests/derivation.cc index 12be8504d..4dd14dcce 100644 --- a/src/libstore/tests/derivation.cc +++ b/src/libstore/tests/derivation.cc @@ -35,9 +35,28 @@ TEST_JSON(DerivationOutput, caFixed, "path": "/nix/store/c015dhfh5l0lp6wxyvdn7bmwhbbr6hr9-drv-name-output-name" })", (DerivationOutput::CAFixed { - .hash = { - .method = FileIngestionMethod::Recursive, - .hash = Hash::parseAnyPrefixed("sha256-iUUXyRY8iW7DGirb0zwGgf1fRbLA7wimTJKgP7l/OQ8="), + .ca = FixedOutputInfo { + .hash = { + .method = FileIngestionMethod::Recursive, + .hash = Hash::parseAnyPrefixed("sha256-iUUXyRY8iW7DGirb0zwGgf1fRbLA7wimTJKgP7l/OQ8="), + }, + .references = {}, + }, + }), + "drv-name", "output-name") + +TEST_JSON(DerivationOutput, caFixedText, + R"({ + "hashAlgo": "text:sha256", + "hash": "894517c9163c896ec31a2adbd33c0681fd5f45b2c0ef08a64c92a03fb97f390f", + "path": "/nix/store/6s1zwabh956jvhv4w9xcdb5jiyanyxg1-drv-name-output-name" + })", + (DerivationOutput::CAFixed { + .ca = TextInfo { + .hash = { + .hash = Hash::parseAnyPrefixed("sha256-iUUXyRY8iW7DGirb0zwGgf1fRbLA7wimTJKgP7l/OQ8="), + }, + .references = {}, }, }), "drv-name", "output-name") diff --git a/tests/ca/text-hashed-output.nix b/tests/ca/text-hashed-output.nix new file mode 100644 index 000000000..31a66dfa8 --- /dev/null +++ b/tests/ca/text-hashed-output.nix @@ -0,0 +1,29 @@ +with import ./config.nix; + +# A simple content-addressed derivation. +# The derivation can be arbitrarily modified by passing a different `seed`, +# but the output will always be the same +rec { + root = mkDerivation { + name = "text-hashed-root"; + buildCommand = '' + set -x + echo "Building a CA derivation" + mkdir -p $out + echo "Hello World" > $out/hello + ''; + __contentAddressed = true; + outputHashMode = "recursive"; + outputHashAlgo = "sha256"; + }; + dependent = mkDerivation { + name = "text-hashed-root.drv"; + buildCommand = '' + echo "Copying the derivation" + cp ${builtins.unsafeDiscardOutputDependency root.drvPath} $out + ''; + __contentAddressed = true; + outputHashMode = "text"; + outputHashAlgo = "sha256"; + }; +} diff --git a/tests/ca/text-hashed-output.sh b/tests/ca/text-hashed-output.sh new file mode 100644 index 000000000..bbe5de763 --- /dev/null +++ b/tests/ca/text-hashed-output.sh @@ -0,0 +1,29 @@ +#!/usr/bin/env bash + +source common.sh + +# Globally enable the ca derivations experimental flag +sed -i 's/experimental-features = .*/& ca-derivations ca-references/' "$NIX_CONF_DIR/nix.conf" + +# In the corresponding nix file, we have two derivations: the first, named root, +# is a normal recursive derivation, while the second, named dependent, has the +# new outputHashMode "text". Note that in "dependent", we don't refer to the +# build output of root, but only to the path of the drv file. For this reason, +# we only need to: +# +# - instantiate the root derivation +# - build the dependent derivation +# - check that the path of the output coincides with that of the original derivation + +drv=$(nix-instantiate --experimental-features ca-derivations ./text-hashed-output.nix -A root) +nix show-derivation "$drv" + +drvDep=$(nix-instantiate --experimental-features ca-derivations ./text-hashed-output.nix -A dependent) +nix show-derivation "$drvDep" + +out1=$(nix-build --experimental-features ca-derivations ./text-hashed-output.nix -A dependent --no-out-link) + +nix path-info $drv --derivation --json | jq +nix path-info $out1 --derivation --json | jq + +test $out1 == $drv diff --git a/tests/local.mk b/tests/local.mk index ccd76eeac..5981177ed 100644 --- a/tests/local.mk +++ b/tests/local.mk @@ -103,6 +103,7 @@ nix_tests = \ ca/why-depends.sh \ import-derivation.sh \ ca/import-derivation.sh \ + ca/text-hashed-output.sh \ nix_path.sh \ case-hack.sh \ placeholders.sh \ |