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#!/bin/sh
# Verify that chmod's --changes (-c) option works.
# Copyright (C) 2000-2018 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ chmod
umask 0
file=f
touch $file || framework_failure_
chmod 444 $file || framework_failure_
skip_if_setgid_
chmod u=rwx $file || fail=1
chmod -c g=rwx $file > out || fail=1
chmod -c g=rwx $file > empty || fail=1
compare /dev/null empty || fail=1
case "$(cat out)" in
"mode of 'f' changed from 0744 "?rwxr--r--?" to 0774 "?rwxrwxr--?) ;;
*) cat out; fail=1 ;;
esac
# From V5.1.0 to 8.22 this would stat the wrong file and
# give an erroneous ENOENT diagnostic
mkdir -p a/b || framework_failure_
# chmod g+s might fail as detailed in setgid.sh
# but we don't care about those edge cases here
chmod g+s a/b
# This should never warn, but it did when special
# bits are set on b (the common case under test)
chmod -c -R g+w a 2>err
compare /dev/null err || fail=1
Exit $fail
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