1#!/bin/sh 2# Test "ln -sf". 3 4# Copyright (C) 1997-2023 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_ ln 21 22echo foo > a || framework_failure_ 23 24# Check that a target directory of '.' is supported 25# and that indirectly specifying the same target and link name 26# through that is detected. 27ln -s . b || framework_failure_ 28ln -sf a b > err 2>&1 && fail=1 29case $(cat err) in 30 *'are the same file') ;; 31 *) fail=1 ;; 32esac 33 34# Ensure we replace symlinks that don't or can't link to an existing target. 35# coreutils-8.22 would fail to replace {ENOTDIR,ELOOP,ENAMETOOLONG}_link below. 36# We apply a limit since AIX returns 2^32-1 which would trigger resource issues. 37name_max=$(stat -f -c %l .) && test "$name_max" -lt $((1024*1024)) || 38 name_max=1 # skip this portion of the test 39name_max_plus1=$(expr $name_max + 1) 40long_name=$(printf '%*s' $name_max_plus1 | tr ' ' '0') 41 42for f in '' f; do 43 ln -s$f missing ENOENT_link || fail=1 44 ln -s$f a/b ENOTDIR_link || fail=1 45 ln -s$f ELOOP_link ELOOP_link || fail=1 46 ln -s$f "$long_name" ENAMETOOLONG_link || fail=1 47done 48 49Exit $fail 50