puid = []byte("/proc/self/uid_map\000")
		uidmap = formatIDMappings(sys.UidMappings)
	}

	if sys.GidMappings != nil {
		psetgroups = []byte("/proc/self/setgroups\000")
		pgid = []byte("/proc/self/gid_map\000")

		if sys.GidMappingsEnableSetgroups {
			setgroups = []byte("allow\000")
		} else {
			setgroups = []byte("deny\000")
		}
		gidmap = formatIDMappings(sys.GidMappings)
	}