From a06ac93dcf311dac3943cb5d96ad47625d413c2d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 5 May 2024 20:46:38 +0200 Subject: Adding upstream version 8.30. Signed-off-by: Daniel Baumann --- tests/tail-2/tail-n0f.sh | 62 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100755 tests/tail-2/tail-n0f.sh (limited to 'tests/tail-2/tail-n0f.sh') diff --git a/tests/tail-2/tail-n0f.sh b/tests/tail-2/tail-n0f.sh new file mode 100755 index 0000000..d7efcf3 --- /dev/null +++ b/tests/tail-2/tail-n0f.sh @@ -0,0 +1,62 @@ +#!/bin/sh +# Make sure that 'tail -n0 -f' and 'tail -c0 -f' sleep +# rather than doing what amounted to a busy-wait. + +# Copyright (C) 2003-2018 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 . + +# This bug was fixed for 5.0.91 +# It skips the test if your system lacks a /proc/$pid/status +# file, or if its contents don't look right. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ tail + +require_proc_pid_status_ + +touch empty || framework_failure_ +echo anything > nonempty || framework_failure_ + +# First verify that -[nc]0 without -f, exit without reading +touch unreadable || framework_failure_ +chmod 0 unreadable || framework_failure_ +tail -c0 unreadable || fail=1 +tail -n0 unreadable || fail=1 + +# Terminate any background tail process +cleanup_() { kill $pid 2>/dev/null && wait $pid; } + +for mode in '' '---disable-inotify'; do + for file in empty nonempty; do + for c_or_n in c n; do + tail --sleep=4 -${c_or_n} 0 -f $mode $file & pid=$! + tail_sleeping() + { + local delay="$1"; sleep $delay + state=$(get_process_status_ $pid) + case $state in + S*) ;; + *) return 1;; + esac + } + # Wait up to 1.5s for tail to sleep + retry_delay_ tail_sleeping .1 4 || + { echo $0: process in unexpected state: $state >&2; fail=1; } + cleanup_ + done + done +done + +Exit $fail -- cgit v1.2.3