53 lines
1.8 KiB
Bash
Executable file
53 lines
1.8 KiB
Bash
Executable file
#!/bin/sh
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# Test the --pid option of tail.
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# Copyright (C) 2003-2025 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_ tail
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getlimits_
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touch empty here || framework_failure_
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# Terminate any background tail process
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cleanup_() { kill $pid 2>/dev/null && wait $pid; }
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for mode in '' '---disable-inotify'; do
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# Use tail itself to create a background process to monitor,
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# which will auto exit when "here" is removed.
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tail -f $mode here & pid=$!
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# Ensure that tail --pid=PID does not exit when PID is alive.
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returns_ 124 timeout 1 tail -f -s.1 --pid=$pid $mode here || fail=1
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# Ensure that tail --pid=PID does not exit when at least one PID is alive.
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returns_ 124 timeout 1 tail -f -s.1 --pid=$PID_T_MAX --pid=$pid $mode here \
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|| fail=1
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cleanup_
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# Ensure that tail --pid=PID exits with success status when PID is dead.
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# Use an unlikely-to-be-live PID
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timeout 10 tail -f -s.1 --pid=$PID_T_MAX $mode empty
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ret=$?
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test $ret = 124 && skip_ "pid $PID_T_MAX present or tail too slow"
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test $ret = 0 || fail=1
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# Ensure tail doesn't wait for data when PID is dead
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returns_ 124 timeout 10 tail -f -s10 --pid=$PID_T_MAX $mode empty && fail=1
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done
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Exit $fail
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