maint: avoid a syntax check failure
[coreutils.git] / tests / ln / sf-1.sh
blob492fce9035423286262ec9e447ce45fc812bebc5
1 #!/bin/sh
2 # Test "ln -sf".
4 # Copyright (C) 1997-2017 Free Software Foundation, Inc.
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.
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.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20 print_ver_ ln
22 echo foo > a || framework_failure_
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.
27 ln -s . b || framework_failure_
28 ln -sf a b > err 2>&1 && fail=1
29 case $(cat err) in
30 *'are the same file') ;;
31 *) fail=1 ;;
32 esac
34 # Ensure we replace symlinks that don't or can't link to an existing target.
35 # coreutils-8.22 would fail to replace {ENOTDIR,ELOOP,ENAMETOOLONG}_link below.
36 name_max=$(stat -f -c %l .) || skip_ 'Error determining NAME_MAX'
37 # Apply a limit since AIX returns 2^32-1 which would trigger resource issues.
38 name_limit=$((1024*1024))
39 test "$name_max" -lt "$name_limit" || name_max="$name_limit"
40 name_max_plus1=$(expr $name_max + 1)
41 test $name_max_plus1 -gt 1 || skip_ 'Error determining NAME_MAX'
42 long_name=$(printf '%0*d' $name_max_plus1 0)
44 for f in '' f; do
45 ln -s$f missing ENOENT_link || fail=1
46 ln -s$f a/b ENOTDIR_link || fail=1
47 ln -s$f ELOOP_link ELOOP_link || fail=1
48 ln -s$f "$long_name" ENAMETOOLONG_link || fail=1
49 done
51 Exit $fail