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Chown files created for passAsFile

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Nixpkgs' writeTextAsFile does this:

  mv "$textPath" "$n"

Since $textPath was owned by root, if $textPath is on the same
filesystem as $n, $n will be owned as root. As a result, the build
result was rejected as having suspicious ownership.

http://hydra.nixos.org/build/22836807
This commit is contained in:
Eelco Dolstra 2015-06-04 14:07:43 +02:00
parent 94378910fb
commit 07d7e7df84
1 changed files with 7 additions and 2 deletions
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9
src/libstore/build.cc
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@ -1655,6 +1655,7 @@ void DerivationGoal::startBuilder()
environments, except those listed in the passAsFile
attribute. Those are passed as file names pointing to
temporary files containing the contents. */
PathSet filesToChown;
StringSet passAsFile = tokenizeString<StringSet>(get(drv.env, "passAsFile"));
int fileNr = 0;
for (auto & i : drv.env) {
@ -1663,6 +1664,7 @@ void DerivationGoal::startBuilder()
} else {
Path p = tmpDir + "/.attr-" + int2String(fileNr++);
writeFile(p, i.second);
filesToChown.insert(p);
env[i.first + "Path"] = p;
}
}
@ -1759,8 +1761,11 @@ void DerivationGoal::startBuilder()
buildUser.kill();
/* Change ownership of the temporary build directory. */
if (chown(tmpDir.c_str(), buildUser.getUID(), buildUser.getGID()) == -1)
throw SysError(format("cannot change ownership of ‘%1%’") % tmpDir);
filesToChown.insert(tmpDir);
for (auto & p : filesToChown)
if (chown(p.c_str(), buildUser.getUID(), buildUser.getGID()) == -1)
throw SysError(format("cannot change ownership of ‘%1%’") % p);
}