[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / sysctl.c

/* Read or write system information.  Linux version.
   Copyright (C) 1996-2013 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 <string.h>	/* For the real memset prototype.  */
#include <sys/sysctl.h>

#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>

int
__sysctl (int *name, int nlen, void *oldval, size_t *oldlenp,
	  void *newval, size_t newlen)
{
  /* GKM FIXME: force __sysctl_args decl to have unbounded pointers.  */
  struct __sysctl_args args =
  {
    .name = name,
    .nlen = nlen,
    .oldval = oldval,
    .oldlenp = oldlenp,
    .newval = newval,
    .newlen = newlen
  };
  (void) CHECK_N (name, nlen);
  (void) CHECK_N (oldval, *oldlenp);
  (void) CHECK_N (newval, newlen);

  return INLINE_SYSCALL (_sysctl, 1, __ptrvalue (&args));
}
libc_hidden_def (__sysctl)
weak_alias (__sysctl, sysctl)
Commit	Line	Data
	1	/* Read or write system information. Linux version.
	2	Copyright (C) 1996-2013 Free Software Foundation, Inc.
	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; if not, see
	17	<http://www.gnu.org/licenses/>. */
	18
	19	#include <errno.h>
	20	#include <string.h> /* For the real memset prototype. */
	21	#include <sys/sysctl.h>
	22
	23	#include <sysdep.h>
	24	#include <sys/syscall.h>
	25	#include <bp-checks.h>
	26
	27	int
	28	__sysctl (int name, int nlen, void oldval, size_t *oldlenp,
	29	void *newval, size_t newlen)
	30	{
	31	/* GKM FIXME: force __sysctl_args decl to have unbounded pointers. */
	32	struct __sysctl_args args =
	33	{
	34	.name = name,
	35	.nlen = nlen,
	36	.oldval = oldval,
	37	.oldlenp = oldlenp,
	38	.newval = newval,
	39	.newlen = newlen
	40	};
	41	(void) CHECK_N (name, nlen);
	42	(void) CHECK_N (oldval, *oldlenp);
	43	(void) CHECK_N (newval, newlen);
	44
	45	return INLINE_SYSCALL (_sysctl, 1, __ptrvalue (&args));
	46	}
	47	libc_hidden_def (__sysctl)
	48	weak_alias (__sysctl, sysctl)