diff options
Diffstat (limited to 'src/libstore/build.cc')
| -rw-r--r-- | src/libstore/build.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc index f38d2eaa0..8397cd0d1 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -466,8 +466,12 @@ void handleDiffHook(bool allowVfork, uid_t uid, uid_t gid, Path tryA, Path tryB, auto diffHook = settings.diffHook; if (diffHook != "" && settings.runDiffHook) { auto wrapper = [&]() { + if (chdir("/") == -1) + throw SysError("chdir / failed"); if (setgid(gid) == -1) throw SysError("setgid failed"); + if (setgroups(0, 0) == -1) + throw SysError("setgroups failed"); if (setuid(uid) == -1) throw SysError("setuid failed"); |