1#!/bin/sh
2# Confirm that copying a directory into itself gets a proper diagnostic.
3
4# Copyright (C) 2001-2023 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# In 4.0.35 and earlier, 'mkdir dir && cp -R dir dir' would produce this:
20#   cp: won't create hard link 'dir/dir/dir' to directory ''
21# Now it gives this:
22#   cp: can't copy a directory 'dir' into itself 'dir/dir'
23
24. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
25print_ver_ cp
26
27mkdir a dir || framework_failure_
28
29
30# This command should exit nonzero.
31cp -R dir dir 2> out && fail=1
32echo 1 >> out
33
34# This should, too.  However, with coreutils-7.1 it would infloop.
35cp -rl dir dir 2>> out && fail=1
36echo 2 >> out
37
38cp -rl a dir dir 2>> out && fail=1
39echo 3 >> out
40cp -rl a dir dir 2>> out && fail=1
41echo 4 >> out
42
43cat > exp <<\EOF
44cp: cannot copy a directory, 'dir', into itself, 'dir/dir'
451
46cp: cannot copy a directory, 'dir', into itself, 'dir/dir'
472
48cp: cannot copy a directory, 'dir', into itself, 'dir/dir'
493
50cp: cannot copy a directory, 'dir', into itself, 'dir/dir'
514
52EOF
53#'
54
55compare exp out || fail=1
56
57Exit $fail
58