diff options
Diffstat (limited to '')
-rwxr-xr-x | tests/tail-2/pipe-f.sh | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tests/tail-2/pipe-f.sh b/tests/tail-2/pipe-f.sh new file mode 100755 index 0000000..76b0d90 --- /dev/null +++ b/tests/tail-2/pipe-f.sh @@ -0,0 +1,46 @@ +#!/bin/sh +# ensure that tail -f doesn't hang in various cases + +# Copyright (C) 2009-2018 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 + +# Speedup the non inotify case +fastpoll='-s.1 --max-unchanged-stats=1' + +for mode in '' '---disable-inotify'; do +# Ensure :|tail -f doesn't hang, per POSIX +echo oo > exp || framework_failure_ +echo foo | timeout 10 tail -f $mode $fastpoll -c3 > out || fail=1 +compare exp out || fail=1 +cat <<\EOF > exp || framework_failure_ +==> standard input <== +ar +EOF +echo bar | returns_ 1 \ + timeout 10 tail -f $mode $fastpoll -c3 - missing > out || fail=1 +compare exp out || fail=1 + +# This would wait indefinitely before v8.28 due to no EPIPE being +# generated due to no data written after the first small amount +timeout 10 tail -f $mode $fastpoll out | sleep .1 || fail=1 + +# This would wait indefinitely before v8.28 (until first write) +(returns_ 1 timeout 10 tail -f $mode $fastpoll /dev/null >&-) || fail=1 +done + +Exit $fail |