* tests/tail/follow-symlink.sh: New file. * tests/local.mk (all_tests): Add the test. --- tests/local.mk | 1 + tests/tail/follow-symlink.sh | 50 ++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) create mode 100755 tests/tail/follow-symlink.sh
diff --git a/tests/local.mk b/tests/local.mk index 6d572e679..04f6cb1e3 100644 --- a/tests/local.mk +++ b/tests/local.mk @@ -193,6 +193,7 @@ all_tests = \ tests/tail/F-vs-rename.sh \ tests/tail/F-headers.sh \ tests/tail/descriptor-vs-rename.sh \ + tests/tail/follow-symlink.sh \ tests/tail/inotify-rotate.sh \ tests/tail/inotify-rotate-resources.sh \ tests/tail/inotify-dir-recreate.sh \ diff --git a/tests/tail/follow-symlink.sh b/tests/tail/follow-symlink.sh new file mode 100755 index 000000000..4cf62eb9f --- /dev/null +++ b/tests/tail/follow-symlink.sh @@ -0,0 +1,50 @@ +#!/bin/sh +# Test that --follow works on a symbolic link. + +# Copyright (C) 2026 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 + +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' + +for mode in '' '---disable-inotify'; do + rm -f file link out || framework_failure_ + touch file || framework_failure_ + ln -s file link || framework_failure_ + tail $mode $fastpoll -f link >out 2>err & pid=$! + for c in a b c; do + # Wait up to 12.7s for tail to start. + echo "$c" >> file + tail_re="^$c$" retry_delay_ check_tail_output .1 7 || { cat out; fail=1; } + done + compare file out || fail=1 + compare /dev/null err || fail=1 + cleanup_ +done + +Exit $fail -- 2.54.0
