tests/du/bind-mount-dir-cycle.sh

   1 #!/bin/sh
   2 # Exercise du's new ability to handle bind-mount-induced dir cycles.
   3
   4 # Copyright (C) 2012-2024 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 <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ du
  21 require_root_
  22
  23 cleanup_() { umount a/b; }
  24
  25 mkdir -p a/b || framework_failure_
  26 mount --bind a a/b \
  27   || skip_ "This test requires mount with a working --bind option."
  28
  29 echo a > exp || framework_failure_
  30
  31 du a > out 2> err || fail=1
  32 sed 's/^[0-9][0-9]*     //' out > k && mv k out
  33
  34 compare /dev/null err || fail=1
  35 compare exp out || fail=1
  36
  37 Exit $fail