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#!/bin/sh
# Test the --pid option of tail.
# Copyright (C) 2003, 2006-2009 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
if test "$VERBOSE" = yes; then
set -x
tail --version
fi
. $srcdir/test-lib.sh
touch here || framework_failure
fail=0
# Use tail itself to create a background process to monitor.
tail -f here &
bg_pid=$!
# Ensure that tail --pid=PID does not exit when PID is alive.
timeout 1 tail -s.1 -f here --pid=$bg_pid
test $? = 124 || fail=1
# Cleanup background process
kill $bg_pid
# Ensure that tail --pid=PID exits successfully when PID is dead.
# Use an unlikely-to-be-live PID
getlimits_
timeout 1 tail -s.1 --pid=$PID_T_MAX -f /dev/null
ret=$?
test $ret = 124 && skip_test_ "pid $PID_T_MAX present"
test $ret = 0 || fail=1
# Ensure fractional sleep parameter is honored with --pid
timeout 1 tail -s.1 -f /dev/null --pid=$PID_T_MAX
test $? = 124 && fail=1
Exit $fail
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