login/getutline_r.c

   1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>
   4    and Paul Janzen <pcj@primenet.com>, 1996.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <errno.h>
  22 #include <bits/libc-lock.h>
  23 #include <utmp.h>
  24
  25 #include "utmp-private.h"
  26
  27
  28 /* We have to use the lock in getutent_r.c.  */
  29 __libc_lock_define (extern, __libc_utmp_lock)
  30
  31 /* The jump table is also in getutent_r.c.  */
  32 extern struct utfuncs *__libc_utmp_jump_table;
  33
  34
  35 int
  36 __getutline_r (const struct utmp *line, struct utmp *buffer,
  37                struct utmp **result)
  38 {
  39   int retval;
  40
  41   __libc_lock_lock (__libc_utmp_lock);
  42
  43   retval = (*__libc_utmp_jump_table->getutline_r) (line, buffer, result);
  44
  45   __libc_lock_unlock (__libc_utmp_lock);
  46
  47   return retval;
  48 }
  49 weak_alias (__getutline_r, getutline_r)