blob: 51ce82b0e27b4f62a9e68fa57cd4854ccca9eddc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#!/bin/sh
# tail -f - would fail with the initial inotify implementation
# Copyright (C) 2009-2016 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/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ tail
check_tail_output()
{
local delay="$1"
grep "$tail_re" out ||
{ sleep $delay; return 1; }
}
# Terminate any background tail process
cleanup_() { kill $pid 2>/dev/null && wait $pid; }
# Speedup the non inotify case
fastpoll='-s.1 --max-unchanged-stats=1'
echo line > in || framework_failure_
echo line > exp || framework_failure_
for mode in '' '---disable-inotify'; do
> out || framework_failure_
tail $mode -f $fastpoll < in > out 2> err & pid=$!
# Wait up to 12.7s for output to appear:
tail_re='line' retry_delay_ check_tail_output .1 7 ||
{ echo "$0: a: unexpected delay?"; cat out; fail=1; }
# Ensure there was no error output.
compare /dev/null err || fail=1
cleanup_
done
# Before coreutils-8.26 this would induce an UMR under UBSAN
returns_ 1 timeout 10 tail -f - <&- 2>errt || fail=1
cat <<\EOF >exp || framework_failure_
tail: cannot fstat 'standard input'
tail: error reading 'standard input'
tail: no files remaining
tail: -
EOF
sed 's/\(tail:.*\):.*/\1/' errt > err || framework_failure_
compare exp err || fail=1
Exit $fail
|
