-/* Read the utmp file FILENAME into *UTMP_BUF, set *N_ENTRIES to the
- number of entries read, and return zero. If there is any error,
- return non-zero and don't modify the parameters. */
+/* Is the utmp entry U desired by the user who asked for OPTIONS? */
+
+static inline bool
+desirable_utmp_entry (STRUCT_UTMP const *u, int options)
+{
+ bool user_proc = IS_USER_PROCESS (u);
+ if ((options & READ_UTMP_USER_PROCESS) && !user_proc)
+ return false;
+ if ((options & READ_UTMP_CHECK_PIDS)
+ && user_proc
+ && (UT_PID (u) <= 0
+ || (kill (UT_PID (u), 0) < 0 && errno == ESRCH)))
+ return false;
+ return true;
+}
+
+/* Read the utmp entries corresponding to file FILE into freshly-
+ malloc'd storage, set *UTMP_BUF to that pointer, set *N_ENTRIES to
+ the number of entries, and return zero. If there is any error,
+ return -1, setting errno, and don't modify the parameters.
+ If OPTIONS & READ_UTMP_CHECK_PIDS is nonzero, omit entries whose
+ process-IDs do not currently exist. */
+
+#ifdef UTMP_NAME_FUNCTION