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/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sched.h>
#include <string.h>
#include <sysdep.h>
#include <unistd.h>
#include <sys/types.h>
#include "cpuset-kern.h"
int
__libc_sched_getaffinity (pid_t pid, size_t cpusetsize, cpu_set_t *cpuset)
{
int res;
int64_t id;
if (pid < 0)
{
__set_errno(ESRCH);
return -1;
}
if (pid == 0) // user level "self"
id = -1; // kernel level "self"
else
id = pid;
if (cpusetsize > sizeof(cpu_set_t))
{
/* Clean the rest of the memory the kernel won't do. */
memset ((char *) cpuset + sizeof(cpu_set_t), '\0', cpusetsize - sizeof(cpu_set_t));
cpusetsize = sizeof(cpu_set_t);
}
res = INLINE_SYSCALL (cpuset_getaffinity, 5, CPU_LEVEL_WHICH,
CPU_WHICH_PID, id, cpusetsize, cpuset);
if (errno == ERANGE)
{
__set_errno(EINVAL);
}
return res;
}
strong_alias (__libc_sched_getaffinity, __sched_getaffinity)
weak_alias (__sched_getaffinity, sched_getaffinity)
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