1#!/bin/sh
2# Make sure cp -p isn't too generous with file permissions.
3
4# Copyright (C) 2006-2023 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18
19. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20print_ver_ cp
21
22# cp -p gives ENOTSUP on NFS on Linux 2.6.9 at least
23require_local_dir_
24
25umask 022
26mkfifo_or_skip_ fifo
27
28# Terminate any background cp process
29cleanup_() { kill $pid 2>/dev/null && wait $pid; }
30
31# Copy a fifo's contents.  That way, we can examine the
32# destination permissions before they're finalized.
33cp -p --copy-contents fifo fifo-copy & pid=$!
34
35(
36  # Now 'cp' is reading the fifo.  Wait for the destination file to
37  # be created, encouraging things along by echoing to the fifo.
38  while test ! -f fifo-copy; do
39    echo foo
40  done
41
42  # Check the permissions of the destination.
43  ls -l fifo-copy >ls.out
44
45  # Close the fifo so that "cp" can continue.  But output first,
46  # before exiting, otherwise some shells would optimize away the file
47  # descriptor that holds the fifo open.
48  echo foo
49) >fifo
50
51case $(cat ls.out) in
52-???------*) ;;
53*) fail=1;;
54esac
55
56wait $pid || fail=1
57
58Exit $fail
59