1#!/bin/sh 2# ensure that mv doesn't first unlink a multi-hard-linked destination 3 4# Copyright (C) 2008-2023 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 21require_strace_ unlink 22 23# Before the fix, mv would unnecessarily unlink the destination symlink: 24# $ rm -f a b b2; touch a b; ln b b2; strace -e unlink /p/bin/mv a b 25# unlink("b") = 0 26# 27# With the fix, it doesn't call unlink: 28# $ rm -f a b b2; touch a b; ln b b2; strace -e unlink ./mv a b 29# $ 30 31touch a b || framework_failure_ 32ln b b2 || framework_failure_ 33 34 35strace -qe unlink mv a b > out 2>&1 || fail=1 36$EGREP 'unlink.*"b"' out && fail=1 37 38# Ensure that the source, "a", is gone. 39ls -dl a > /dev/null 2>&1 && fail=1 40 41# Ensure that the destination, "b", has link count 1. 42n_links=$(stat --printf=%h b) || fail=1 43test "$n_links" = 1 || fail=1 44 45Exit $fail 46