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# Test the --pid option of tail.
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# Copyright (C) 2003-2012 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 <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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touch empty here || framework_failure_
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for inotify 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 $inotify here &
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# Ensure that tail --pid=PID does not exit when PID is alive.
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timeout 1 tail -f -s.1 --pid=$bg_pid $inotify here
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test $? = 124 || fail=1
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# Cleanup background process
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# Ensure that tail --pid=PID exits with success status when PID is dead.
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# Use an unlikely-to-be-live PID
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timeout 10 tail -f -s.1 --pid=$PID_T_MAX $inotify empty
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test $ret = 124 && skip_ "pid $PID_T_MAX present or tail too slow"
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test $ret = 0 || fail=1
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# Ensure tail doesn't wait for data when PID is dead
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timeout 10 tail -f -s10 --pid=$PID_T_MAX $inotify empty
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test $? = 124 && fail=1