tar/tests/extrac21.at

# Test suite for GNU tar.                             -*- Autotest -*-
# Copyright 2017-2023 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/>.

# When called with the --delay-directory-restore option, tar would
# in some cases restore the directory permissions too early, before
# attempting to replace softlink placeholders with the actual link.
# This caused failure if the permissions forbade writing.
#
# The bug was caused by incorrect assumption about delayed_set_stat
# ordering in create_placeholder_file.
#
# Reported by: Giuseppe Scrivano <[email protected]>
# References: <[email protected]>,
#    <http://lists.gnu.org/archive/html/bug-tar/2017-11/msg00009.html>

AT_SETUP([delay-directory-restore])
AT_KEYWORDS([extract extract21 read-only symlink delay-directory-restore])
AT_TAR_CHECK([
AT_UNPRIVILEGED_PREREQ

mkdir a a/b a/c
genfile --file a/b/D
genfile --file a/c/A
cd a/b
ln -sf ../c/A
cd ../..
chmod a-w a/b
tar --no-recurs -c -f A.tar a a/b a/b/D a/c a/b/A a/c/A
mkdir out
tar -C out -v -x -f A.tar --delay-directory-restore
],
[0],
[a/
a/b/
a/b/D
a/c/
a/b/A
a/c/A
],
[],[],[],[ustar]) # Testing one format is enough

AT_CLEANUP