diff options
Diffstat (limited to 'tests/tail-2/F-vs-missing')
-rwxr-xr-x | tests/tail-2/F-vs-missing | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/tail-2/F-vs-missing b/tests/tail-2/F-vs-missing new file mode 100755 index 000000000..8c1d01898 --- /dev/null +++ b/tests/tail-2/F-vs-missing @@ -0,0 +1,49 @@ +#!/bin/sh +# demonstrate that tail -F works for currently missing dirs +# Before coreutils-8.6, tail -F missing/file would not +# notice any subsequent availability of the missing/file. + +# Copyright (C) 2010 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 <http://www.gnu.org/licenses/>. + +. "${srcdir=.}/init.sh"; path_prepend_ ../src +test "$VERBOSE" = yes && tail --version + +debug='---disable-inotify' +debug= +tail $debug -F -s.1 missing/file > out 2>&1 & pid=$! + +check_tail_output() +{ + local delay="$1" + grep "$tail_re" out > /dev/null || + { sleep $delay; return 1; } +} + +# Wait up to 6.3s for tail to start with diagnostic: +# tail: cannot open `missing/file' for reading: No such file or directory +tail_re='cannot open' retry_delay_ check_tail_output .1 7 || fail=1 + +mkdir missing || fail=1 +(cd missing && echo x > file) + +# Wait up to 6.3s for this to appear in the output: +# "tail: `...' has appeared; following end of new file" +tail_re='has appeared' retry_delay_ check_tail_output .1 7 || + { echo "$0: file: unexpected delay?"; cat out; fail=1; } + +kill -HUP $pid + +Exit $fail |