From 97baf32fbca13101f58d30bb3a601302c3d560f3 Mon Sep 17 00:00:00 2001 From: Daiderd Jordan Date: Tue, 2 Jul 2019 00:12:12 +0200 Subject: build: add exit code for hash and check mismatches Makes it easier to identify the failure reason in other tooling, eg. differentiate between a non-deterministic --check vs a failed build. $ nix-build '' --argstr url http://example.org --argstr sha256 0000000000000000000000000000000000000000000000000000 hash mismatch in fixed-output derivation '/nix/store/nzi9ck45rwlxzcwr25is7qlf3hs5xl83-example.org': wanted: sha256:0000000000000000000000000000000000000000000000000000 got: sha256:08y4734bm2zahw75b16bcmcg587vvyvh0n11gwiyir70divwp1rm $ echo $? 102 $ nix-build -E 'with import {}; runCommand "foo" {} "date +%s > $out"' --check warning: rewriting hashes in '/nix/store/g3k47g0399fvjmbm0p0mnad74k4w8vkz-foo'; cross fingers error: derivation '/nix/store/mggc8dz13ackb49qca6m23zq4fpq132q-foo.drv' may not be deterministic: output '/nix/store/g3k47g0399fvjmbm0p0mnad74k4w8vkz-foo' differs $ echo $? 104 --- src/libstore/build.cc | 16 +++++++++++++--- src/libstore/download.cc | 3 ++- 2 files changed, 15 insertions(+), 4 deletions(-) (limited to 'src/libstore') diff --git a/src/libstore/build.cc b/src/libstore/build.cc index 5b38bcf3c..c076ea8b0 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -266,6 +266,12 @@ public: /* Set if at least one derivation had a timeout. */ bool timedOut; + /* Set if at least one derivation fails with a hash mismatch. */ + bool hashMismatch; + + /* Set if at least one derivation is not deterministic in check mode. */ + bool checkMismatch; + LocalStore & store; std::unique_ptr hook; @@ -3213,6 +3219,7 @@ void DerivationGoal::registerOutputs() /* Throw an error after registering the path as valid. */ + worker.hashMismatch = true; delayedException = std::make_exception_ptr( BuildError("hash mismatch in fixed-output derivation '%s':\n wanted: %s\n got: %s", dest, h.to_string(), h2.to_string())); @@ -3255,6 +3262,7 @@ void DerivationGoal::registerOutputs() if (!worker.store.isValidPath(path)) continue; auto info = *worker.store.queryPathInfo(path); if (hash.first != info.narHash) { + worker.checkMismatch = true; if (settings.runDiffHook || settings.keepFailed) { Path dst = worker.store.toRealPath(path + checkSuffix); deletePath(dst); @@ -3266,10 +3274,10 @@ void DerivationGoal::registerOutputs() buildUser ? buildUser->getGID() : getgid(), path, dst, drvPath, tmpDir); - throw Error(format("derivation '%1%' may not be deterministic: output '%2%' differs from '%3%'") + throw NotDeterministic(format("derivation '%1%' may not be deterministic: output '%2%' differs from '%3%'") % drvPath % path % dst); } else - throw Error(format("derivation '%1%' may not be deterministic: output '%2%' differs") + throw NotDeterministic(format("derivation '%1%' may not be deterministic: output '%2%' differs") % drvPath % path); } @@ -4101,6 +4109,8 @@ Worker::Worker(LocalStore & store) lastWokenUp = steady_time_point::min(); permanentFailure = false; timedOut = false; + hashMismatch = false; + checkMismatch = false; } @@ -4461,7 +4471,7 @@ void Worker::waitForInput() unsigned int Worker::exitStatus() { - return timedOut ? 101 : (permanentFailure ? 100 : 1); + return checkMismatch ? 104 : (hashMismatch ? 102 : (timedOut ? 101 : (permanentFailure ? 100 : 1))); } diff --git a/src/libstore/download.cc b/src/libstore/download.cc index 0c5a73ea3..7a2af237e 100644 --- a/src/libstore/download.cc +++ b/src/libstore/download.cc @@ -855,10 +855,11 @@ CachedDownloadResult Downloader::downloadCached( } if (expectedStorePath != "" && storePath != expectedStorePath) { + unsigned int statusCode = 102; Hash gotHash = request.unpack ? hashPath(request.expectedHash.type, store->toRealPath(storePath)).first : hashFile(request.expectedHash.type, store->toRealPath(storePath)); - throw nix::Error("hash mismatch in file downloaded from '%s':\n wanted: %s\n got: %s", + throw nix::Error(statusCode, "hash mismatch in file downloaded from '%s':\n wanted: %s\n got: %s", url, request.expectedHash.to_string(), gotHash.to_string()); } -- cgit v1.2.3 From cbf84bcce7d3fddb353d3aa0f012f5cbdbb77629 Mon Sep 17 00:00:00 2001 From: Daiderd Jordan Date: Sat, 11 May 2019 23:14:19 +0200 Subject: build: use binary mask for build status flags If multiple builds with fail with different errors it will be reflected in the status code. eg. 103 => timeout + hash mismatch 105 => timeout + check mismatch 106 => hash mismatch + check mismatch 107 => timeout + hash mismatch + check mismatch --- src/libstore/build.cc | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'src/libstore') diff --git a/src/libstore/build.cc b/src/libstore/build.cc index c076ea8b0..abfae3c7c 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -4471,7 +4471,15 @@ void Worker::waitForInput() unsigned int Worker::exitStatus() { - return checkMismatch ? 104 : (hashMismatch ? 102 : (timedOut ? 101 : (permanentFailure ? 100 : 1))); + unsigned int mask = 0; + if (timedOut) + mask |= 1; + if (hashMismatch) + mask |= 2; + if (checkMismatch) + mask |= 4; + + return mask ? 100 + mask : 1; } -- cgit v1.2.3 From a52c331edba6e8c67469f53dda0be2903d18fa8c Mon Sep 17 00:00:00 2001 From: Daiderd Jordan Date: Sat, 15 Jun 2019 15:28:32 +0200 Subject: build: replace 100 offset for build exit codes --- src/libstore/build.cc | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) (limited to 'src/libstore') diff --git a/src/libstore/build.cc b/src/libstore/build.cc index abfae3c7c..350ac4092 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -4471,15 +4471,29 @@ void Worker::waitForInput() unsigned int Worker::exitStatus() { + /* + * 1100100 + * ^^^^ + * |||`- timeout + * ||`-- output hash mismatch + * |`--- build failure + * `---- not deterministic + */ unsigned int mask = 0; + bool buildFailure = permanentFailure || timedOut || hashMismatch; + if (buildFailure) + mask |= 0x04; // 100 if (timedOut) - mask |= 1; + mask |= 0x01; // 101 if (hashMismatch) - mask |= 2; - if (checkMismatch) - mask |= 4; + mask |= 0x02; // 102 + if (checkMismatch) { + mask |= 0x08; // 104 + } - return mask ? 100 + mask : 1; + if (mask) + mask |= 0x60; + return mask ? mask : 1; } -- cgit v1.2.3