/* Copyright (C) 2005-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <pthreadP.h>

int

pthread_mutexattr_setrobust (pthread_mutexattr_t *attr, int robustness)

{

  if (robustness != PTHREAD_MUTEX_STALLED_NP

      && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0))

    return EINVAL;

  struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;

  /* We use bit 30 to signal whether the mutex is going to be

     robust or not.  */

  if (robustness == PTHREAD_MUTEX_STALLED_NP)

    iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST;

  else

    iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST;

  return 0;

}

weak_alias (pthread_mutexattr_setrobust, pthread_mutexattr_setrobust_np)