tests/du/deref.sh

   1 #!/bin/sh
   2 # prior to coreutils-4.5.3, du -D didn't work in some cases
   3 # Based on an example from Andreas Schwab and/or Michal Svec.
   4 # Also, up to coreutils-8.5, du -L sometimes incorrectly
   5 # counted the space of the followed symlinks.
   6
   7 # Copyright (C) 2002-2024 Free Software Foundation, Inc.
   8
   9 # This program is free software: you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation, either version 3 of the License, or
  12 # (at your option) any later version.
  13
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  23 print_ver_ du
  24
  25 mkdir -p a/sub || framework_failure_
  26 ln -s a/sub slink || framework_failure_
  27 touch b || framework_failure_
  28 ln -s .. a/sub/dotdot || framework_failure_
  29 ln -s nowhere dangle || framework_failure_
  30
  31
  32 # This used to fail with the following diagnostic:
  33 # du: 'b': No such file or directory
  34 du -sD slink b > /dev/null 2>&1 || fail=1
  35
  36 # This used to fail to report the dangling symlink.
  37 returns_ 1 du -L dangle > /dev/null 2>&1 || fail=1
  38
  39 # du -L used to mess up, either by counting the symlink's file system space
  40 # itself (-L should follow symlinks, not count their space)
  41 # or (briefly in July 2010) by omitting the entry for "a".
  42 du_L_output=$(du -L a) || fail=1
  43 du_lL_output=$(du -lL a) || fail=1
  44 du_x_output=$(du --exclude=dotdot a) || fail=1
  45 test "X$du_L_output" = "X$du_x_output" || fail=1
  46 test "X$du_lL_output" = "X$du_x_output" || fail=1
  47
  48 Exit $fail