Make it possible to compile strerror.c separately, unconditionally.

[gnulib.git] / lib / readutmp.c

diff --git a/lib/readutmp.c b/lib/readutmp.c
index c3ce7f9..73c7b53 100644 (file)
--- a/lib/readutmp.c
+++ b/lib/readutmp.c
@@ -1,5 +1,7 @@
 /* GNU's read utmp module.
-   Copyright (C) 1992-2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+
+   Copyright (C) 1992-2001, 2003, 2004, 2005, 2006 Free Software
+   Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -13,7 +15,7 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 /* Written by jla; revised by djm */
 
@@ -67,12 +69,18 @@ extract_trimmed_name (const STRUCT_UTMP *ut)
 static inline bool
 desirable_utmp_entry (STRUCT_UTMP const *u, int options)
 {
-  return ! (options & READ_UTMP_CHECK_PIDS
-           && (UT_PID (u) <= 0
-               || (kill (UT_PID (u), 0) < 0 && errno == ESRCH)));
+  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 FILENAME into freshly-
+/* 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.
@@ -82,7 +90,7 @@ desirable_utmp_entry (STRUCT_UTMP const *u, int options)
 #ifdef UTMP_NAME_FUNCTION
 
 int
-read_utmp (const char *filename, size_t *n_entries, STRUCT_UTMP **utmp_buf,
+read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,
           int options)
 {
   size_t n_read = 0;
@@ -94,7 +102,7 @@ read_utmp (const char *filename, size_t *n_entries, STRUCT_UTMP **utmp_buf,
      Solaris' utmpname returns 1 upon success -- which is contrary
      to what the GNU libc version does.  In addition, older GNU libc
      versions are actually void.   */
-  UTMP_NAME_FUNCTION (filename);
+  UTMP_NAME_FUNCTION (file);
 
   SET_UTMP_ENT ();
 
@@ -118,14 +126,14 @@ read_utmp (const char *filename, size_t *n_entries, STRUCT_UTMP **utmp_buf,
 #else
 
 int
-read_utmp (const char *filename, size_t *n_entries, STRUCT_UTMP **utmp_buf,
+read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,
           int options)
 {
   size_t n_read = 0;
   size_t n_alloc = 0;
   STRUCT_UTMP *utmp = NULL;
   int saved_errno;
-  FILE *f = fopen (filename, "r");
+  FILE *f = fopen (file, "r");
 
   if (! f)
     return -1;