# Process this file with autom4te to create testsuite. -*- Autotest -*-
# Test suite for GNU tar.
# Copyright 2015-2021 Free Software Foundation, Inc.
#
# 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/>.

# Description: When creating multivolume archives, the bufmap code in
# buffer.c implicitly assumed that the members are stored in the archive
# in a contiguous fashion, ignoring the member (and eventual extended) headers
# between them.  This worked until the member header happened to be at
# the very beginning of the volume, in which case its length was included in
# the calculation of the stored size and size left to store.  Due to this,
# the GNUFileParts extended header contained invalid GNU.volume.offset value,
# and the resulting archive failed to extract properly.  The bug affected
# versions of tar up to 1.29.90 (commit da8d0659a6).
#
# This test case also checks that GNUFileParts headers are not displayed in
# verbose mode.
# 
# Reported by: <russiangolem@gmail.com>
# References:
#     <CAE7Kiz_0oMqGdzkoh0FbOd=hUoPhtHHYhjZveM_4hEku081QFQ@mail.gmail.com>,
#     http://lists.gnu.org/archive/html/bug-tar/2017-05/msg00007.html
#

AT_SETUP([file start at the beginning of a posix volume])
AT_KEYWORDS([multivolume multiv multiv10])

AT_TAR_CHECK([
set -e
genfile --length=15360 --file data1
genfile --length=15360 --file data2
tar -v -c -L 10 -M -f 1.tar -f 2.tar -f 3.tar -f 4.tar -f 5.tar data1 data2
tar -M -t -f 1.tar -f 2.tar -f 3.tar -f 4.tar -f 5.tar
mkdir out
tar -C out -M -x -f 1.tar -f 2.tar -f 3.tar -f 4.tar -f 5.tar
cmp data1 out/data1
cmp data2 out/data2
],
[0],
[data1
data2
data1
data2
],
[],[],[],[posix])

AT_CLEANUP