login/getutent_r.c

   1 /* Copyright (C) 1996-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <libc-lock.h>
  19 #include <stdlib.h>
  20 #include <utmp.h>
  21
  22 #include "utmp-private.h"
  23
  24 /* We need to protect the opening of the file.  */
  25 __libc_lock_define_initialized (, __libc_utmp_lock attribute_hidden)
  26
  27
  28 void
  29 __setutent (void)
  30 {
  31   __libc_lock_lock (__libc_utmp_lock);
  32
  33   __libc_setutent ();
  34
  35   __libc_lock_unlock (__libc_utmp_lock);
  36 }
  37 libc_hidden_def (__setutent)
  38 weak_alias (__setutent, setutent)
  39
  40
  41 int
  42 __getutent_r (struct utmp *buffer, struct utmp **result)
  43 {
  44   int retval;
  45
  46   __libc_lock_lock (__libc_utmp_lock);
  47
  48   retval = __libc_getutent_r (buffer, result);
  49
  50   __libc_lock_unlock (__libc_utmp_lock);
  51
  52   return retval;
  53 }
  54 libc_hidden_def (__getutent_r)
  55 weak_alias (__getutent_r, getutent_r)
  56
  57
  58 struct utmp *
  59 __pututline (const struct utmp *data)
  60 {
  61   struct utmp *buffer;
  62
  63   __libc_lock_lock (__libc_utmp_lock);
  64
  65   buffer = __libc_pututline (data);
  66
  67   __libc_lock_unlock (__libc_utmp_lock);
  68
  69   return buffer;
  70 }
  71 libc_hidden_def (__pututline)
  72 weak_alias (__pututline, pututline)
  73
  74
  75 void
  76 __endutent (void)
  77 {
  78   __libc_lock_lock (__libc_utmp_lock);
  79
  80   __libc_endutent ();
  81
  82   __libc_lock_unlock (__libc_utmp_lock);
  83 }
  84 libc_hidden_def (__endutent)
  85 weak_alias (__endutent, endutent)