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

   This file is part of the GNU C Library.

   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 <sched.h>

#include <string.h>

#include <sysdep.h>

#include <sys/param.h>

#include <sys/types.h>

#include <shlib-compat.h>

#ifdef __NR_sched_getaffinity

# if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)

extern int __sched_getaffinity_new (pid_t, size_t, cpu_set_t *);

libc_hidden_proto (__sched_getaffinity_new)

# endif

int

__sched_getaffinity_new (pid_t pid, size_t cpusetsize, cpu_set_t *cpuset)

{

  int res = INLINE_SYSCALL (sched_getaffinity, 3, pid,

			    MIN (INT_MAX, cpusetsize), cpuset);

  if (res != -1)

    {

      /* Clean the rest of the memory the kernel didn't do.  */

      memset ((char *) cpuset + res, '\0', cpusetsize - res);

      res = 0;

    }

  return res;

}

versioned_symbol (libc, __sched_getaffinity_new, sched_getaffinity,

		  GLIBC_2_3_4);

# if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)

libc_hidden_def (__sched_getaffinity_new)

int

attribute_compat_text_section

__sched_getaffinity_old (pid_t pid, cpu_set_t *cpuset)

{

  /* The old interface by default assumed a 1024 processor bitmap.  */

  return __sched_getaffinity_new (pid, 128, cpuset);

}

compat_symbol (libc, __sched_getaffinity_old, sched_getaffinity, GLIBC_2_3_3);

# endif

#else

# include <posix/sched_getaffinity.c>

#endif