nptl/old_pthread_cond_init.c

   1 /* Copyright (C) 2002-2021 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 <errno.h>
  19 #include "pthreadP.h"
  20 #include <shlib-compat.h>
  21
  22
  23 #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2)
  24 int
  25 __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
  26                          const pthread_condattr_t *cond_attr)
  27 {
  28   struct pthread_condattr *icond_attr = (struct pthread_condattr *) cond_attr;
  29
  30   /* The type of the first argument is actually that of the old, too
  31      small pthread_cond_t.  We use only the first word of it, as a
  32      pointer.  */
  33   cond->cond = NULL;
  34
  35   /* We can't support PSHARED condvars in the old pthread_cond_*
  36      functions and neither clocks other than CLOCK_REALTIME.  */
  37   if (icond_attr != NULL && icond_attr->value)
  38     return EINVAL;
  39
  40   return 0;
  41 }
  42 compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init,
  43                GLIBC_2_0);
  44 #endif