tar/tests/link04.at

# Process this file with autom4te to create testsuite. -*- Autotest -*-

# Test suite for GNU tar.
# Copyright 2010-2023 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/>.

# written by Paul Eggert

# Make sure that tar -c correctly handles the case where a file is
# encountered multiple times, even though it has a link count of 1.
# This can occur when "tar -c FOO FOO" is used; it can also occur when
# "tar -ch FOO" is used, if FOO contains symbolic links that point to
# the same file.

AT_SETUP([link count is 1 but multiple occurrences])
AT_KEYWORDS([hardlinks link04])

AT_TAR_CHECK([
mkdir dir
echo TEST > dir/file
ln -s file dir/symlink || AT_SKIP_TEST

tar cf archive dir dir
tar tvf archive | sed '
  s,.*[[0-9]] dir/,dir/,
' | sort

echo --

tar cfl archive dir dir

echo ==

tar chf archive dir
tar tvf archive | sed '
  s,.*[[0-9]] dir/,dir/,
  s,file,FOO,g
  s,symlink,FOO,g
' | sort
],
[0],
[dir/
dir/
dir/file
dir/file link to dir/file
dir/symlink -> file
dir/symlink link to dir/symlink
--
==
dir/
dir/FOO
dir/FOO link to dir/FOO
])

AT_CLEANUP