tests/mkdir/writable-under-readonly

   1 #!/bin/sh
   2 # FIXME: convert this to a root-only test.
   3
   4 # Copyright (C) 2005, 2007-2011 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # Test for the 2005-10-13 patch to lib/mkdir-p.c that fixed this sort
  20 # of bug in mkdir:
  21 #
  22 #   "mkdir -p /a/b/c" no longer fails merely because a leading prefix
  23 #   directory (e.g., /a or /a/b) exists on a read-only file system.
  24 #
  25 # Demonstrate the problem, as root:
  26
  27 . "${srcdir=.}/init.sh"; path_prepend_ ../src
  28 print_ver_ mkdir
  29 require_root_
  30
  31 # FIXME: for now, skip it unconditionally
  32 skip_ temporarily disabled
  33
  34 # FIXME: define cleanup_ to do the umount
  35
  36 # FIXME: use mktemp
  37 cd /tmp                                    \
  38   && dd if=/dev/zero of=1 bs=8192 count=50 \
  39   && dd if=/dev/zero of=2 bs=8192 count=50 \
  40   && mkdir -p mnt-ro && mkfs -t ext2 1 && mkfs -t ext2 2 \
  41   && mount -o loop=/dev/loop3 1 mnt-ro    \
  42   && mkdir -p mnt-ro/rw                    \
  43   && mount -o remount,ro mnt-ro           \
  44   && mount -o loop=/dev/loop4 2 mnt-ro/rw
  45
  46 mkdir -p mnt-ro/rw/sub || fail=1
  47
  48 # To clean up
  49 umount /tmp/2
  50 umount /tmp/1
  51
  52 Exit $fail