nptl/old_pthread_cond_init.c

   1 /* Copyright (C) 2002-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include "pthreadP.h"
  21 #include <shlib-compat.h>
  22
  23
  24 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  25 int
  26 __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
  27                          const pthread_condattr_t *cond_attr)
  28 {
  29   struct pthread_condattr *icond_attr = (struct pthread_condattr *) cond_attr;
  30
  31   /* The type of the first argument is actually that of the old, too
  32      small pthread_cond_t.  We use only the first word of it, as a
  33      pointer.  */
  34   cond->cond = NULL;
  35
  36   /* We can't support PSHARED condvars in the old pthread_cond_*
  37      functions and neither clocks other than CLOCK_REALTIME.  */
  38   if (icond_attr != NULL && icond_attr->value)
  39     return EINVAL;
  40
  41   return 0;
  42 }
  43 compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init,
  44                GLIBC_2_0);
  45 #endif