1#!/bin/sh
2# Verify that chmod's --changes (-c) option works.
3
4# Copyright (C) 2000-2023 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
20print_ver_ chmod
21
22umask 0
23file=f
24touch $file || framework_failure_
25chmod 444 $file || framework_failure_
26
27skip_if_setgid_
28
29
30chmod u=rwx $file || fail=1
31chmod -c g=rwx $file > out || fail=1
32chmod -c g=rwx $file > empty || fail=1
33
34compare /dev/null empty || fail=1
35case "$(cat out)" in
36  "mode of 'f' changed from 0744 "?rwxr--r--?" to 0774 "?rwxrwxr--?) ;;
37  *) cat out; fail=1 ;;
38esac
39
40# From V5.1.0 to 8.22 this would stat the wrong file and
41# give an erroneous ENOENT diagnostic
42mkdir -p a/b || framework_failure_
43# chmod g+s might fail as detailed in setgid.sh
44# but we don't care about those edge cases here
45chmod g+s a/b
46# This should never warn, but it did when special
47# bits are set on b (the common case under test)
48chmod -c -R g+w a 2>err
49compare /dev/null err || fail=1
50
51Exit $fail
52