From 1993b10d1169b04b83443a9ef5d4e3e38667afeb Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Tue, 21 Jul 2015 14:45:24 +0200 Subject: [PATCH] Fix Darwin build Turns out getgrouplist() is not POSIX. http://hydra.nixos.org/build/23881243 --- src/libstore/build.cc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/libstore/build.cc b/src/libstore/build.cc index 46d2841dc..e7696e44e 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -543,6 +543,7 @@ void UserLock::acquire() throw Error(format("the Nix user should not be a member of ‘%1%’") % settings.buildUsersGroup); +#if __linux__ /* Get the list of supplementary groups of this build user. This is usually either empty or contains a group such as "kvm". */ supplementaryGIDs.resize(10); @@ -553,6 +554,7 @@ void UserLock::acquire() throw Error(format("failed to get list of supplementary groups for ‘%1%’") % pw->pw_name); supplementaryGIDs.resize(ngroups); +#endif return; } @@ -2372,7 +2374,8 @@ void DerivationGoal::runChild() if (buildUser.enabled()) { /* Preserve supplementary groups of the build user, to allow admins to specify groups such as "kvm". */ - if (setgroups(buildUser.getSupplementaryGIDs().size(), + if (!buildUser.getSupplementaryGIDs().empty() && + setgroups(buildUser.getSupplementaryGIDs().size(), buildUser.getSupplementaryGIDs().data()) == -1) throw SysError("cannot set supplementary groups of build user");