glibc/sysdeps/unix/sysv/linux/ustat.c

/* Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <errno.h>
#include <sys/ustat.h>
#include <sys/sysmacros.h>

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

extern int __syscall_ustat (unsigned short int, struct ustat *__unbounded);

int
ustat (dev_t dev, struct ustat *ubuf)
{
  unsigned short int k_dev;

  /* We must convert the value to dev_t type used by the kernel.  */
  k_dev = ((major (dev) & 0xff) << 8) | (minor (dev) & 0xff);

  return INLINE_SYSCALL (ustat, 2, k_dev, CHECK_1 (ubuf));
}