sysdeps/unix/sysv/linux/sysctl.c

   1 /* Read or write system information.  Linux version.
   2    Copyright (C) 1996-2014 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
  26 int
  27 __sysctl (int *name, int nlen, void *oldval, size_t *oldlenp,
  28           void *newval, size_t newlen)
  29 {
  30   struct __sysctl_args args =
  31   {
  32     .name = name,
  33     .nlen = nlen,
  34     .oldval = oldval,
  35     .oldlenp = oldlenp,
  36     .newval = newval,
  37     .newlen = newlen
  38   };
  39
  40   return INLINE_SYSCALL (_sysctl, 1, &args);
  41 }
  42 libc_hidden_def (__sysctl)
  43 weak_alias (__sysctl, sysctl)