lib/root-dev-ino.c

   1 /* root-dev-ino.c -- get the device and inode numbers for `/'.
   2    Copyright (C) 2003 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 2, or (at your option)
   7    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, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Written by Jim Meyering. */
  19
  20 #if HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #include <stdlib.h>
  25 #include "root-dev-ino.h"
  26
  27 /* Call lstat to get the device and inode numbers for `/'.
  28    Upon failure, return NULL.  Otherwise, set the members of
  29    *ROOT_D_I accordingly and return ROOT_D_I.  */
  30 struct dev_ino *
  31 get_root_dev_ino (struct dev_ino *root_d_i)
  32 {
  33   struct stat statbuf;
  34   if (lstat ("/", &statbuf))
  35     return NULL;
  36   root_d_i->st_ino = statbuf.st_ino;
  37   root_d_i->st_dev = statbuf.st_dev;
  38   return root_d_i;
  39 }