1#!/bin/sh
2# Exercise an abort-inducing flaw in inotify-enabled tail -F.
3# Like inotify-hash-abuse, but without a hard-coded "9".
4
5# Copyright (C) 2009-2023 Free Software Foundation, Inc.
6
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <https://www.gnu.org/licenses/>.
19
20. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
21print_ver_ tail
22
23# Terminate any background tail process
24cleanup_() { kill $pid 2>/dev/null && wait $pid; }
25
26# Speedup the non inotify case
27fastpoll='-s.1 --max-unchanged-stats=1'
28
29for mode in '' '---disable-inotify'; do
30  touch f || framework_failure_
31
32  tail $mode $fastpoll -F f & pid=$!
33
34  for i in $(seq 200); do
35    kill -0 $pid || break;
36    touch g
37    mv g f
38  done
39
40  # Ensure tail hasn't aborted
41  kill -0 $pid || fail=1
42
43  cleanup_
44done
45
46Exit $fail
47