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glibc  2.9
getutline_r.c
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00001 /* Copyright (C) 1996, 1997, 2002, 2004 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@cygnus.com>
00004    and Paul Janzen <pcj@primenet.com>, 1996.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include <errno.h>
00022 #include <bits/libc-lock.h>
00023 #include <utmp.h>
00024 
00025 #include "utmp-private.h"
00026 
00027 
00028 /* We have to use the lock in getutent_r.c.  */
00029 __libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
00030 
00031 
00032 int
00033 __getutline_r (const struct utmp *line, struct utmp *buffer,
00034               struct utmp **result)
00035 {
00036   int retval;
00037 
00038   __libc_lock_lock (__libc_utmp_lock);
00039 
00040   retval = (*__libc_utmp_jump_table->getutline_r) (line, buffer, result);
00041 
00042   __libc_lock_unlock (__libc_utmp_lock);
00043 
00044   return retval;
00045 }
00046 weak_alias (__getutline_r, getutline_r)