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Allow disabling log compression

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This commit is contained in:
Eelco Dolstra 2012-07-17 09:40:12 -04:00
parent a7a43adb79
commit 53b24f3518
2 changed files with 35 additions and 12 deletions
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10
doc/manual/conf-file.xml
View file

@ -297,6 +297,16 @@ build-use-chroot = /dev /proc /bin</programlisting>
</varlistentry>
<varlistentry><term><literal>build-compress-log</literal></term>
<listitem><para>If set to <literal>true</literal> (the default),
build logs written to <filename>/nix/var/log/nix/drvs</filename>
will be compressed on the fly using bzip2. Otherwise, they will
not be compressed.</para></listitem>
</varlistentry>
<varlistentry><term><literal>system</literal></term>
<listitem><para>This option specifies the canonical Nix system

37
src/libstore/build.cc
View file

@ -769,6 +769,7 @@ private:
/* File descriptor for the log file. */
FILE * fLogFile;
BZFILE * bzLogFile;
AutoCloseFD fdLogFile;
/* Pipe for the builder's standard output/error. */
Pipe builderOut;
@ -2119,20 +2120,29 @@ Path DerivationGoal::openLogFile()
Path dir = (format("%1%/%2%") % nixLogDir % drvsLogDir).str();
createDirs(dir);
Path logFileName = (format("%1%/%2%.bz2") % dir % baseNameOf(drvPath)).str();
AutoCloseFD fd = open(logFileName.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
if (fd == -1)
throw SysError(format("creating log file `%1%'") % logFileName);
closeOnExec(fd);
if (queryBoolSetting("build-compress-log", true)) {
if (!(fLogFile = fdopen(fd.borrow(), "w")))
throw SysError(format("opening file `%1%'") % logFileName);
Path logFileName = (format("%1%/%2%.bz2") % dir % baseNameOf(drvPath)).str();
AutoCloseFD fd = open(logFileName.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
if (fd == -1) throw SysError(format("creating log file `%1%'") % logFileName);
closeOnExec(fd);
int err;
if (!(bzLogFile = BZ2_bzWriteOpen(&err, fLogFile, 9, 0, 0)))
throw Error(format("cannot open compressed log file `%1%'") % logFileName);
if (!(fLogFile = fdopen(fd.borrow(), "w")))
throw SysError(format("opening file `%1%'") % logFileName);
return logFileName;
int err;
if (!(bzLogFile = BZ2_bzWriteOpen(&err, fLogFile, 9, 0, 0)))
throw Error(format("cannot open compressed log file `%1%'") % logFileName);
return logFileName;
} else {
Path logFileName = (format("%1%/%2%") % dir % baseNameOf(drvPath)).str();
fdLogFile = open(logFileName.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
if (fdLogFile == -1) throw SysError(format("creating log file `%1%'") % logFileName);
closeOnExec(fdLogFile);
return logFileName;
}
}
@ -2149,6 +2159,8 @@ void DerivationGoal::closeLogFile()
fclose(fLogFile);
fLogFile = 0;
}
fdLogFile.close();
}
@ -2180,7 +2192,8 @@ void DerivationGoal::handleChildOutput(int fd, const string & data)
int err;
BZ2_bzWrite(&err, bzLogFile, (unsigned char *) data.data(), data.size());
if (err != BZ_OK) throw Error(format("cannot write to compressed log file (BZip2 error = %1%)") % err);
}
} else if (fdLogFile != -1)
writeFull(fdLogFile, (unsigned char *) data.data(), data.size());
}
if (hook && fd == hook->fromHook.readSide)