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) 2002-2023 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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
23print_ver_ du
24
25mkdir -p a/sub || framework_failure_
26ln -s a/sub slink || framework_failure_
27touch b || framework_failure_
28ln -s .. a/sub/dotdot || framework_failure_
29ln -s nowhere dangle || framework_failure_
30
31
32# This used to fail with the following diagnostic:
33# du: 'b': No such file or directory
34du -sD slink b > /dev/null 2>&1 || fail=1
35
36# This used to fail to report the dangling symlink.
37returns_ 1 du -L dangle > /dev/null 2>&1 || fail=1
38
39# du -L used to mess up, either by counting the symlink's file system space
40# itself (-L should follow symlinks, not count their space)
41# or (briefly in July 2010) by omitting the entry for "a".
42du_L_output=$(du -L a) || fail=1
43du_lL_output=$(du -lL a) || fail=1
44du_x_output=$(du --exclude=dotdot a) || fail=1
45test "X$du_L_output" = "X$du_x_output" || fail=1
46test "X$du_lL_output" = "X$du_x_output" || fail=1
47
48Exit $fail
49