1#!/bin/sh 2# This variant of 'assert' would get a Uninit Mem Read reliably in 2.0.9. 3# Due to a race condition in the test, the 'assert' script would get 4# the UMR on Solaris only some of the time, and not at all on Linux/GNU. 5 6# Copyright (C) 2000-2023 Free Software Foundation, Inc. 7 8# This program is free software: you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation, either version 3 of the License, or 11# (at your option) any later version. 12 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <https://www.gnu.org/licenses/>. 20 21. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src 22print_ver_ tail 23 24check_tail_output() 25{ 26 local delay="$1" 27 grep "$tail_re" out || 28 { sleep $delay; return 1; } 29} 30 31# Terminate any background tail process 32cleanup_() { kill $pid 2>/dev/null && wait $pid; } 33 34# Speedup the non inotify case 35fastpoll='-s.1 --max-unchanged-stats=1' 36 37for mode in '' '---disable-inotify'; do 38 rm -f a foo out 39 touch a || framework_failure_ 40 41 tail $mode $fastpoll -F a foo > out 2>&1 & pid=$! 42 43 # Wait up to 12.7s for tail to start. 44 echo x > a || framework_failure_ 45 tail_re='^x$' retry_delay_ check_tail_output .1 7 || 46 { cat out; fail=1; break; } 47 48 # Wait up to 12.7s for tail to notice new foo file 49 ok='ok ok ok' 50 echo "$ok" > foo || framework_failure_ 51 tail_re="^$ok$" retry_delay_ check_tail_output .1 7 || 52 { echo "$0: foo: unexpected delay?"; cat out; fail=1; break; } 53 54 cleanup_ 55done 56 57Exit $fail 58