1#!/bin/sh 2# Ensure that cp works as documented, when the destination is a dangling symlink 3 4# Copyright (C) 2007-2023 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 22ln -s no-such dangle || framework_failure_ 23echo hi > f || framework_failure_ 24echo hi > exp || framework_failure_ 25echo "cp: not writing through dangling symlink 'dangle'" \ 26 > exp-err || framework_failure_ 27 28 29# Starting with 6.9.90, this usage fails, by default: 30for opt in '' '-f'; do 31 returns_ 1 cp $opt f dangle > err 2>&1 || fail=1 32 compare exp-err err || fail=1 33 test -f no-such && fail=1 34done 35 36 37# But you can set POSIXLY_CORRECT to get the historical behavior. 38env POSIXLY_CORRECT=1 cp f dangle > out 2>&1 || fail=1 39cat no-such >> out || fail=1 40compare exp out || fail=1 41 42 43# Starting with 8.30 we treat ELOOP as existing and so 44# remove the symlink 45ln -s loop loop || framework_failure_ 46cp -f f loop > err 2>&1 || fail=1 47compare /dev/null err || fail=1 48compare exp loop || fail=1 49test -f loop || fail=1 50 51Exit $fail 52