#define GID_NOBODY UID_NOBODY
#define UID_NOACCESS 60002 /* user ID no access */
-#define MAXUID 2147483647 /* max user id */
+#define MAXUID UINT32_MAX /* max user id */
#define MAXPROJID MAXUID /* max project id */
#define PAGESIZE (sysconf(_SC_PAGESIZE))