basic/strv: use SWAP_TWO() macro (#3602)

[elogind.git] / src / basic / user-util.h

diff --git a/src/basic/user-util.h b/src/basic/user-util.h
index 5f733b3ebafdf8d0d4877c2cc932a99bacab5769..5d1d0abe4d1c960f12eda860335bd90453193e0b 100644 (file)
--- a/src/basic/user-util.h
+++ b/src/basic/user-util.h
@@ -19,8 +19,9 @@
   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);
 
@@ -34,8 +35,8 @@ static inline int parse_gid(const char *s, gid_t *ret_gid) {
         return parse_uid(s, (uid_t*) ret_gid);
 }
 
-#if 0 /// UNNEEDED by elogind
 char* getlogname_malloc(void);
+#if 0 /// UNNEEDED by elogind
 char* getusername_malloc(void);
 #endif // 0
 
@@ -69,3 +70,7 @@ int take_etc_passwd_lock(const char *root);
 
 #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;
+}