tar/tests/extrac22.at

# Test suite for GNU tar.                             -*- Autotest -*-
# Copyright 2017-2021 Free Software Foundation, Inc.
#
# This file is part of GNU tar.
#
# GNU tar 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.
#
# GNU tar 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 <http://www.gnu.org/licenses/>.

AT_SETUP([delay-directory-restore on reversed ordering])

# The --delay-directory-resore option worked incorrectly on archives with
# reversed member ordering (which was documented, anyway). This is illustrated
# in
#   http://lists.gnu.org/archive/html/bug-tar/2019-03/msg00022.html
# which was taken as a base for this testcase.
# The bug affected tar versions <= 1.32.

AT_KEYWORDS([extract extrac22 delay delay-reversed])
AT_TAR_CHECK([
AT_UNPRIVILEGED_PREREQ
AT_SORT_PREREQ
mkdir t
(cd t
 genfile --length 100 --file data1
 mkdir dir1
 cp data1 dir1
 mkdir dir2
 cd dir2
 ln -s ../dir1/data1 data2
 cd ..
 chmod -w dir2)

AT_DATA([filelist],
[./dir2/data2
./dir2
./dir1/data1
./dir1
./data1
])

tar -C t -c -f a.tar --no-recursion -T filelist

mkdir restore
tar -x -p --delay-directory-restore -C restore -f a.tar
# Previous versions of tar would fail here with the following diagnostics:
# tar: ./dir2/data2: Cannot unlink: Permission denied
],
[0],
[])
AT_CLEANUP