50 lines
1.6 KiB
Bash
Executable file
50 lines
1.6 KiB
Bash
Executable file
#!/bin/sh
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# ensure that cp does not write through a just-copied symlink
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# Copyright (C) 2007-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cp
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mkdir a b c || framework_failure_
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ln -s ../t a/1 || framework_failure_
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echo payload > b/1 || framework_failure_
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echo "cp: will not copy 'b/1' through just-created symlink 'c/1'" \
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> exp || framework_failure_
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# Check both cases: a dangling symlink, and one pointing to a writable file.
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for i in dangling-dest existing-dest; do
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test $i = existing-dest && echo i > t
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test $i = dangling-dest && rm -f t
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cp -dR a/1 b/1 c 2> out && fail=1
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compare exp out || fail=1
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# When the destination is a dangling symlink,
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# ensure that cp does not create it.
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test $i = dangling-dest \
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&& test -f t && fail=1
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# When the destination symlink points to a writable file,
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# ensure that cp does not change it.
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test $i = existing-dest \
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&& case $(cat t) in i);; *) fail=1;; esac
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done
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Exit $fail
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