run-as: Keep supplementary groups.

This broke TCP debugging because processes don't inherit the AID_INET
group.

Bug: 67058466
Test: adb shell run-as com.example.native_activity groups prints "inet".
Change-Id: Ieb461dccda8611057bb2d16334e584eb5e57c8b1

parent 39071a51

run-as/run-as.cpp

+1 −0

Original line number	Diff line number	Diff line
		@@ -194,6 +194,7 @@ int main(int argc, char* argv[]) {
		ScopedMinijail j(minijail_new());
		minijail_change_uid(j.get(), uid);
		minijail_change_gid(j.get(), gid);
		minijail_keep_supplementary_gids(j.get());
		minijail_enter(j.get());

		if (selinux_android_setcontext(uid, 0, info.seinfo, pkgname) < 0) {