35 lines
1.2 KiB
Bash
Executable file
35 lines
1.2 KiB
Bash
Executable file
#!/bin/sh
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# Demonstrate that "truncate -s0 writable-but-owned-by-other" works.
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# Copyright (C) 2008-2025 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_ truncate
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require_root_
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# Create a file owned by root, and writable by $NON_ROOT_USERNAME.
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echo > root-owned || framework_failure_
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chgrp +$NON_ROOT_GID . root-owned || framework_failure_
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chmod g+w root-owned
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# Ensure that the current directory is searchable by $NON_ROOT_USERNAME.
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chmod g+x .
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chroot --skip-chdir --user=$NON_ROOT_USERNAME / env PATH="$PATH" \
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truncate -s0 root-owned || fail=1
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Exit $fail
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