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chdir, setgroups

This commit is contained in:
Graham Christensen 2019-05-11 15:57:38 -04:00
parent 6df61db060
commit dde8eeb39a
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1 changed files with 4 additions and 0 deletions
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4
src/libstore/build.cc
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@ -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");