1/* root-dev-ino.c -- get the device and inode numbers for `/'.
2   Copyright (C) 2003, 2005-2006, 2009-2010 Free Software Foundation, Inc.
3
4   This program is free software: you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation, either version 3 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17/* Written by Jim Meyering. */
18
19#include <config.h>
20
21#include "root-dev-ino.h"
22
23#include <stdlib.h>
24
25/* Call lstat to get the device and inode numbers for `/'.
26   Upon failure, return NULL.  Otherwise, set the members of
27   *ROOT_D_I accordingly and return ROOT_D_I.  */
28struct dev_ino *
29get_root_dev_ino (struct dev_ino *root_d_i)
30{
31  struct stat statbuf;
32  if (lstat ("/", &statbuf))
33    return NULL;
34  root_d_i->st_ino = statbuf.st_ino;
35  root_d_i->st_dev = statbuf.st_dev;
36  return root_d_i;
37}
38