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/* Copyright (C) 2002-2019 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
<https://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
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