1#!/bin/sh
2# Ensure that mv works with a few symlink-onto-hard-link cases.
3
4# Copyright (C) 2012-2023 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_ mv
21
22touch f || framework_failure_
23ln f h || framework_failure_
24ln -s f s || framework_failure_
25
26# Given two links f and h to some important content, and a symlink s to f,
27# "mv s f" must fail because it might then be hard to find the link, h.
28# "mv s l" may succeed because then, s (now "l") still points to f.
29# Of course, if the symlink were being moved into a different destination
30# directory, things would be very different, and, I suspect, implausible.
31
32echo "mv: 's' and 'f' are the same file" > exp || framework_failure_
33mv s f > out 2> err && fail=1
34compare /dev/null out || fail=1
35compare exp err || fail=1
36
37mv s l > out 2> err || fail=1
38compare /dev/null out || fail=1
39compare /dev/null err || fail=1
40
41Exit $fail
42