diff options
Diffstat (limited to 'tests/tail-2/wait.sh')
-rwxr-xr-x | tests/tail-2/wait.sh | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/tests/tail-2/wait.sh b/tests/tail-2/wait.sh new file mode 100755 index 000000000..587b44954 --- /dev/null +++ b/tests/tail-2/wait.sh @@ -0,0 +1,80 @@ +#!/bin/sh +# Make sure that 'tail -f' returns immediately if a file doesn't exist +# while 'tail -F' waits for it to appear. + +# Copyright (C) 2003-2012 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 +print_ver_ tail + +touch here || framework_failure_ +{ touch unreadable && chmod a-r unreadable; } || framework_failure_ + + +for inotify in ---disable-inotify ''; do + timeout 10 tail -s0.1 -f $inotify not_here + test $? = 124 && fail=1 + + if test ! -r unreadable; then # can't test this when root + timeout 10 tail -s0.1 -f $inotify unreadable + test $? = 124 && fail=1 + fi + + timeout 1 tail -s0.1 -f $inotify here 2>tail.err + test $? = 124 || fail=1 + + # 'tail -F' must wait in any case. + + timeout 1 tail -s0.1 -F $inotify here 2>>tail.err + test $? = 124 || fail=1 + + if test ! -r unreadable; then # can't test this when root + timeout 1 tail -s0.1 -F $inotify unreadable + test $? = 124 || fail=1 + fi + + timeout 1 tail -s0.1 -F $inotify not_here + test $? = 124 || fail=1 + + grep -Ev 'inotify (resources exhausted|cannot be used)' tail.err > x + mv x tail.err + test -s tail.err && fail=1 + :>tail.err + + tail_F() + { + local delay="$1" + + touch k || framework_failure_ + tail -s.1 --max-unchanged-stats=2 -F $inotify k > tail.out & + pid=$! + sleep $delay + mv k l + sleep $delay + touch k + mv k l + sleep $delay + echo NO >> l + sleep $delay + kill $pid + rm -f k l + + test ! -s tail.out + } + retry_delay_ tail_F .1 4 || fail=1 +done + +Exit $fail |