/* Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   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 <string.h>

#include <unistd.h>

#include "pthreadP.h"

#include <shlib-compat.h>

struct pthread_attr *__attr_list;

int __attr_list_lock = LLL_LOCK_INITIALIZER;

int

__pthread_attr_init_2_1 (pthread_attr_t *attr)

{

  struct pthread_attr *iattr;

  ASSERT_TYPE_SIZE (pthread_attr_t, __SIZEOF_PTHREAD_ATTR_T);

  ASSERT_PTHREAD_INTERNAL_SIZE (pthread_attr_t, struct pthread_attr);

  /* Many elements are initialized to zero so let us do it all at

     once.  This also takes care of clearing the bytes which are not

     internally used.  */

  memset (attr, '\0', __SIZEOF_PTHREAD_ATTR_T);

  iattr = (struct pthread_attr *) attr;

  /* Default guard size specified by the standard.  */

  iattr->guardsize = __getpagesize ();

  return 0;

}

versioned_symbol (libpthread, __pthread_attr_init_2_1, pthread_attr_init,

		  GLIBC_2_1);

#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)

int

__pthread_attr_init_2_0 (pthread_attr_t *attr)

{

  /* This code is specific to the old LinuxThread code which has a too

     small pthread_attr_t definition.  The struct looked like

     this:  */

  struct old_attr

  {

    int detachstate;

    int schedpolicy;

    struct sched_param schedparam;

    int inheritsched;

    int scope;

  };

  struct pthread_attr *iattr;

  /* Many elements are initialized to zero so let us do it all at

     once.  This also takes care of clearing the bytes which are not

     internally used.  */

  memset (attr, '\0', sizeof (struct old_attr));

  iattr = (struct pthread_attr *) attr;

  iattr->flags |= ATTR_FLAG_OLDATTR;

  /* We cannot enqueue the attribute because that member is not in the

     old attribute structure.  */

  return 0;

}

compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init,

	       GLIBC_2_0);

#endif