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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:46:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:46:38 +0000 |
commit | a06ac93dcf311dac3943cb5d96ad47625d413c2d (patch) | |
tree | 6efda5e24896e7920ccac1f97aecc73406525040 /tests/tail-2/inotify-dir-recreate.sh | |
parent | Initial commit. (diff) | |
download | coreutils-a06ac93dcf311dac3943cb5d96ad47625d413c2d.tar.xz coreutils-a06ac93dcf311dac3943cb5d96ad47625d413c2d.zip |
Adding upstream version 8.30.upstream/8.30upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/tail-2/inotify-dir-recreate.sh')
-rwxr-xr-x | tests/tail-2/inotify-dir-recreate.sh | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/tests/tail-2/inotify-dir-recreate.sh b/tests/tail-2/inotify-dir-recreate.sh new file mode 100755 index 0000000..c1afa38 --- /dev/null +++ b/tests/tail-2/inotify-dir-recreate.sh @@ -0,0 +1,88 @@ +#!/bin/sh +# Makes sure, inotify will switch to polling mode if directory +# of the watched file was removed and recreated. +# (...instead of getting stuck forever) + +# Copyright (C) 2017-2018 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/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ tail + +grep '^#define HAVE_INOTIFY 1' "$CONFIG_HEADER" >/dev/null && is_local_dir_ . \ + || skip_ 'inotify is not supported' + +# Terminate any background tail process +cleanup_() { kill $pid 2>/dev/null && wait $pid; } + +cleanup_fail_ () +{ + warn_ $1 + cleanup_ + fail=1 +} + +# $check_re - string to be found +# $check_f - file to be searched +check_tail_output_ () +{ + local delay="$1" + grep $check_re $check_f > /dev/null || + { sleep $delay ; return 1; } +} + +grep_timeout_ () +{ + check_re="$1" + check_f="$2" + retry_delay_ check_tail_output_ .1 5 +} + +# Prepare the file to be watched +mkdir dir && echo 'inotify' > dir/file || framework_failure_ + +#tail must print content of the file to stdout, verify +timeout 60 tail --pid=$$ -F dir/file >out 2>&1 & pid=$! +grep_timeout_ 'inotify' 'out' || +{ cleanup_fail_ 'file to be tailed does not exist'; } + +inotify_failed_re='inotify (resources exhausted|cannot be used)' +grep -E "$inotify_failed_re" out && + skip_ "inotify can't be used" + +# Remove the directory, should get the message about the deletion +rm -r dir || framework_failure_ +grep_timeout_ 'polling' 'out' || +{ cleanup_fail_ 'tail did not switch to polling mode'; } + +# Recreate the dir, must get a message about recreation +mkdir dir && touch dir/file || framework_failure_ +grep_timeout_ 'appeared' 'out' || +{ cleanup_fail_ 'previously removed file did not appear'; } + +cleanup_ + +# Expected result for the whole process +cat <<\EOF > exp || framework_failure_ +inotify +tail: 'dir/file' has become inaccessible: No such file or directory +tail: directory containing watched file was removed +tail: inotify cannot be used, reverting to polling +tail: 'dir/file' has appeared; following new file +EOF + +compare exp out || fail=1 + +Exit $fail |