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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:46:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:46:38 +0000 |
commit | a06ac93dcf311dac3943cb5d96ad47625d413c2d (patch) | |
tree | 6efda5e24896e7920ccac1f97aecc73406525040 /tests/mv/symlink-onto-hardlink-to-self.sh | |
parent | Initial commit. (diff) | |
download | coreutils-a06ac93dcf311dac3943cb5d96ad47625d413c2d.tar.xz coreutils-a06ac93dcf311dac3943cb5d96ad47625d413c2d.zip |
Adding upstream version 8.30.upstream/8.30upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/mv/symlink-onto-hardlink-to-self.sh')
-rwxr-xr-x | tests/mv/symlink-onto-hardlink-to-self.sh | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/tests/mv/symlink-onto-hardlink-to-self.sh b/tests/mv/symlink-onto-hardlink-to-self.sh new file mode 100755 index 0000000..e17330e --- /dev/null +++ b/tests/mv/symlink-onto-hardlink-to-self.sh @@ -0,0 +1,63 @@ +#!/bin/sh +# Demonstrate that when moving a symlink onto a hardlink-to-that-symlink, +# an error is presented. Depending on your kernel (e.g., Linux, Solaris, +# but not NetBSD), prior to coreutils-8.16, the mv would successfully perform +# a no-op. I.e., surprisingly, mv s1 s2 would succeed, yet fail to remove s1. + +# Copyright (C) 2012-2018 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ mv + +# Create a file f, and a symlink s1 to that file. +touch f || framework_failure_ +ln -s f s2 || framework_failure_ + +# Attempt to create a hard link to that symlink. +# On some systems, it's not possible: they create a hard link to the referent. +ln s2 s1 || framework_failure_ + +# If s1 is not a symlink, skip this test. +test -h s1 \ + || skip_ your kernel or file system cannot create a hard link to a symlink + +for opt in '' --backup; do + + if test "$opt" = --backup; then + mv $opt s1 s2 > out 2>&1 || fail=1 + compare /dev/null out || fail=1 + + # Ensure that s1 is gone. + test -e s1 && fail=1 + + # With --backup, ensure that the backup file was created. + ref=$(readlink s2~) || fail=1 + test "$ref" = f || fail=1 + else + echo "mv: 's1' and 's2' are the same file" > exp + mv $opt s1 s2 2>err && fail=1 + compare exp err || fail=1 + + # Ensure that s1 is still present. + test -e s1 || fail=1 + + # Without --backup, ensure there is no backup file. + test -e s2~ && fail=1 + fi + +done + +Exit $fail |