84 lines
2.4 KiB
Bash
Executable file
84 lines
2.4 KiB
Bash
Executable file
#!/bin/sh
|
|
# Test tail -f -
|
|
|
|
# Copyright (C) 2009-2025 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 <https://www.gnu.org/licenses/>.
|
|
|
|
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
|
|
print_ver_ tail
|
|
|
|
#################
|
|
# tail -f - would fail with the initial inotify implementation
|
|
|
|
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
|
|
EOF
|
|
sed 's/\(tail:.*\):.*/\1/' errt > err || framework_failure_
|
|
compare exp err || fail=1
|
|
|
|
|
|
#################
|
|
# Before coreutils-8.28 this would erroneously issue a warning
|
|
if tty -s </dev/tty && test -t 0; then
|
|
for input in '' '-' '/dev/tty'; do
|
|
returns_ 124 timeout 0.1 tail -f $input 2>err || fail=1
|
|
compare /dev/null err || fail=1
|
|
done
|
|
|
|
tail -f - /dev/null </dev/tty 2> out & pid=$!
|
|
# Wait up to 12.7s for output to appear:
|
|
tail_re='ineffective' retry_delay_ check_tail_output .1 7 ||
|
|
{ cat out; fail=1; }
|
|
cleanup_
|
|
fi
|
|
|
|
Exit $fail
|