lib/root-dev-ino.h

   1 /* Root device and inode number checking.
   2
   3    Copyright (C) 2003, 2006 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef ROOT_DEV_INO_H
  20 # define ROOT_DEV_INO_H 1
  21
  22 # include "dev-ino.h"
  23 # include "same-inode.h"
  24
  25 struct dev_ino *
  26 get_root_dev_ino (struct dev_ino *root_d_i);
  27
  28 /* These macros are common to the programs that support the
  29    --preserve-root and --no-preserve-root options.  */
  30
  31 # define ROOT_DEV_INO_CHECK(Root_dev_ino, Dir_statbuf) \
  32     (Root_dev_ino && SAME_INODE (*Dir_statbuf, *Root_dev_ino))
  33
  34 # define ROOT_DEV_INO_WARN(Dirname)                                     \
  35   do                                                                    \
  36     {                                                                   \
  37       if (STREQ (Dirname, "/"))                                         \
  38         error (0, 0, _("it is dangerous to operate recursively on %s"), \
  39                quote (Dirname));                                        \
  40       else                                                              \
  41         error (0, 0,                                                    \
  42                _("it is dangerous to operate recursively on %s (same as %s)"), \
  43                quote_n (0, Dirname), quote_n (1, "/"));                 \
  44       error (0, 0, _("use --no-preserve-root to override this failsafe")); \
  45     }                                                                   \
  46   while (0)
  47
  48 #endif