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LocalFSStore::getBuildLog(): Handle corrupted logs

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This commit is contained in:
Eelco Dolstra 2017-03-21 19:23:07 +01:00
parent ed5c0f69f2
commit 895a74a814
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GPG key ID: 8170B4726D7198DE
3 changed files with 21 additions and 14 deletions
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7
src/libstore/local-fs-store.cc
View file

@ -94,6 +94,7 @@ std::shared_ptr<std::string> LocalFSStore::getBuildLog(const Path & path_)
assertStorePath(path); assertStorePath(path);
if (!isDerivation(path)) { if (!isDerivation(path)) {
try { try {
path = queryPathInfo(path)->deriver; path = queryPathInfo(path)->deriver;
@ -116,8 +117,12 @@ std::shared_ptr<std::string> LocalFSStore::getBuildLog(const Path & path_)
if (pathExists(logPath)) if (pathExists(logPath))
return std::make_shared<std::string>(readFile(logPath)); return std::make_shared<std::string>(readFile(logPath));
else if (pathExists(logBz2Path)) else if (pathExists(logBz2Path)) {
try {
return decompress("bzip2", readFile(logBz2Path)); return decompress("bzip2", readFile(logBz2Path));
} catch (Error &) { }
}
} }
return nullptr; return nullptr;

24
src/libutil/compression.cc
View file

@ -18,7 +18,7 @@ static ref<std::string> decompressXZ(const std::string & in)
lzma_ret ret = lzma_stream_decoder( lzma_ret ret = lzma_stream_decoder(
&strm, UINT64_MAX, LZMA_CONCATENATED); &strm, UINT64_MAX, LZMA_CONCATENATED);
if (ret != LZMA_OK) if (ret != LZMA_OK)
throw Error("unable to initialise lzma decoder"); throw CompressionError("unable to initialise lzma decoder");
Finally free([&]() { lzma_end(&strm); }); Finally free([&]() { lzma_end(&strm); });
@ -48,10 +48,10 @@ static ref<std::string> decompressXZ(const std::string & in)
return res; return res;
if (ret != LZMA_OK) if (ret != LZMA_OK)
throw Error("error while decompressing xz file"); throw CompressionError("error while decompressing xz file");
if (strm.avail_in == 0) if (strm.avail_in == 0)
throw Error("xz data ends prematurely"); throw CompressionError("xz data ends prematurely");
} }
} }
@ -62,7 +62,7 @@ static ref<std::string> decompressBzip2(const std::string & in)
int ret = BZ2_bzDecompressInit(&strm, 0, 0); int ret = BZ2_bzDecompressInit(&strm, 0, 0);
if (ret != BZ_OK) if (ret != BZ_OK)
throw Error("unable to initialise bzip2 decoder"); throw CompressionError("unable to initialise bzip2 decoder");
Finally free([&]() { BZ2_bzDecompressEnd(&strm); }); Finally free([&]() { BZ2_bzDecompressEnd(&strm); });
@ -88,10 +88,10 @@ static ref<std::string> decompressBzip2(const std::string & in)
return res; return res;
if (ret != BZ_OK) if (ret != BZ_OK)
throw Error("error while decompressing bzip2 file"); throw CompressionError("error while decompressing bzip2 file");
if (strm.avail_in == 0) if (strm.avail_in == 0)
throw Error("bzip2 data ends prematurely"); throw CompressionError("bzip2 data ends prematurely");
} }
} }
@ -144,7 +144,7 @@ struct XzSink : CompressionSink
lzma_ret ret = lzma_easy_encoder( lzma_ret ret = lzma_easy_encoder(
&strm, 6, LZMA_CHECK_CRC64); &strm, 6, LZMA_CHECK_CRC64);
if (ret != LZMA_OK) if (ret != LZMA_OK)
throw Error("unable to initialise lzma encoder"); throw CompressionError("unable to initialise lzma encoder");
// FIXME: apply the x86 BCJ filter? // FIXME: apply the x86 BCJ filter?
strm.next_out = outbuf; strm.next_out = outbuf;
@ -168,7 +168,7 @@ struct XzSink : CompressionSink
lzma_ret ret = lzma_code(&strm, LZMA_FINISH); lzma_ret ret = lzma_code(&strm, LZMA_FINISH);
if (ret != LZMA_OK && ret != LZMA_STREAM_END) if (ret != LZMA_OK && ret != LZMA_STREAM_END)
throw Error("error while flushing xz file"); throw CompressionError("error while flushing xz file");
if (strm.avail_out == 0 || ret == LZMA_STREAM_END) { if (strm.avail_out == 0 || ret == LZMA_STREAM_END) {
nextSink(outbuf, sizeof(outbuf) - strm.avail_out); nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
@ -192,7 +192,7 @@ struct XzSink : CompressionSink
lzma_ret ret = lzma_code(&strm, LZMA_RUN); lzma_ret ret = lzma_code(&strm, LZMA_RUN);
if (ret != LZMA_OK) if (ret != LZMA_OK)
throw Error("error while compressing xz file"); throw CompressionError("error while compressing xz file");
if (strm.avail_out == 0) { if (strm.avail_out == 0) {
nextSink(outbuf, sizeof(outbuf)); nextSink(outbuf, sizeof(outbuf));
@ -215,7 +215,7 @@ struct BzipSink : CompressionSink
memset(&strm, 0, sizeof(strm)); memset(&strm, 0, sizeof(strm));
int ret = BZ2_bzCompressInit(&strm, 9, 0, 30); int ret = BZ2_bzCompressInit(&strm, 9, 0, 30);
if (ret != BZ_OK) if (ret != BZ_OK)
throw Error("unable to initialise bzip2 encoder"); throw CompressionError("unable to initialise bzip2 encoder");
strm.next_out = outbuf; strm.next_out = outbuf;
strm.avail_out = sizeof(outbuf); strm.avail_out = sizeof(outbuf);
@ -238,7 +238,7 @@ struct BzipSink : CompressionSink
int ret = BZ2_bzCompress(&strm, BZ_FINISH); int ret = BZ2_bzCompress(&strm, BZ_FINISH);
if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END) if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
throw Error("error while flushing bzip2 file"); throw CompressionError("error while flushing bzip2 file");
if (strm.avail_out == 0 || ret == BZ_STREAM_END) { if (strm.avail_out == 0 || ret == BZ_STREAM_END) {
nextSink((unsigned char *) outbuf, sizeof(outbuf) - strm.avail_out); nextSink((unsigned char *) outbuf, sizeof(outbuf) - strm.avail_out);
@ -262,7 +262,7 @@ struct BzipSink : CompressionSink
int ret = BZ2_bzCompress(&strm, BZ_RUN); int ret = BZ2_bzCompress(&strm, BZ_RUN);
if (ret != BZ_OK) if (ret != BZ_OK)
Error("error while compressing bzip2 file"); CompressionError("error while compressing bzip2 file");
if (strm.avail_out == 0) { if (strm.avail_out == 0) {
nextSink((unsigned char *) outbuf, sizeof(outbuf)); nextSink((unsigned char *) outbuf, sizeof(outbuf));

2
src/libutil/compression.hh
View file

@ -21,4 +21,6 @@ ref<CompressionSink> makeCompressionSink(const std::string & method, Sink & next
MakeError(UnknownCompressionMethod, Error); MakeError(UnknownCompressionMethod, Error);
MakeError(CompressionError, Error);
} }