sysdeps/unix/sysv/linux/sysctl.c

   1 /* Read or write system information.  Linux version.
   2    Copyright (C) 1996, 1997, 1998 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <errno.h>
  21 #include <sys/sysctl.h>
  22
  23 #include <sysdep.h>
  24 #include <sys/syscall.h>
  25
  26 extern int __syscall__sysctl (struct __sysctl_args *args);
  27
  28 int
  29 sysctl (int *name, int nlen, void *oldval, size_t *oldlenp,
  30         void *newval, size_t newlen)
  31 {
  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
  42   return INLINE_SYSCALL (_sysctl, 1, &args);
  43 }