cgroups: don't escape if we're not real root

If we're host unpriv but root in our userns, we can't really escape cgroups. Let's switch the cgroup escape test to reflect this. Signed-off-by: Tycho Andersen <tycho@tycho.ws>

cgroups: don't escape if we're not real root
8d961e28 · Tycho Andersen · e3bc3b86 · 8d961e28
Commit 8d961e28 authored Mar 13, 2018 by Tycho Andersen
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cgfsng.c src/lxc/cgroups/cgfsng.c +1 -1

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--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -1368,7 +1368,7 @@ static char *cg_unified_get_current_cgroup(void)
 	bool will_escape;
 	char *copy = NULL;

-	will_escape = (geteuid() == 0);
+	will_escape = !am_host_unpriv();
 	if (will_escape)
 		basecginfo = read_file("/proc/1/cgroup");
 	else