-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
#pragma once
/***
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <sys/types.h>
#include <stdbool.h>
+#include <sys/types.h>
+#include <unistd.h>
bool uid_is_valid(uid_t uid);
#define PTR_TO_GID(p) ((gid_t) (((uintptr_t) (p))-1))
#define GID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1))
+
+static inline bool userns_supported(void) {
+ return access("/proc/self/uid_map", F_OK) >= 0;
+}