51 lines
1.6 KiB
Bash
Executable file
51 lines
1.6 KiB
Bash
Executable file
#!/bin/sh
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# Ensure that cp works as documented, when the destination is a dangling 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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ln -s no-such dangle || framework_failure_
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echo hi > f || framework_failure_
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echo hi > exp || framework_failure_
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echo "cp: not writing through dangling symlink 'dangle'" \
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> exp-err || framework_failure_
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# Starting with 6.9.90, this usage fails, by default:
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for opt in '' '-f'; do
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returns_ 1 cp $opt f dangle > err 2>&1 || fail=1
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compare exp-err err || fail=1
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test -f no-such && fail=1
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done
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# But you can set POSIXLY_CORRECT to get the historical behavior.
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env POSIXLY_CORRECT=1 cp f dangle > out 2>&1 || fail=1
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cat no-such >> out || fail=1
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compare exp out || fail=1
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# Starting with 8.30 we treat ELOOP as existing and so
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# remove the symlink
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ln -s loop loop || framework_failure_
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cp -f f loop > err 2>&1 || fail=1
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compare /dev/null err || fail=1
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compare exp loop || fail=1
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test -f loop || fail=1
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Exit $fail
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