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d796a29f2f
* tests/tail-2/wait.sh: Without inotify, skip a portion of the test that checks that -F never outputs from a tailed descriptor after the followed name is recreated, because tail_forever() doesn't guarantee that. Noticed at http://hydra.nixos.org/build/22766288
97 lines
2.7 KiB
Bash
Executable File
97 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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# Make sure that 'tail -f' returns immediately if a file doesn't exist
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# while 'tail -F' waits for it to appear.
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# Copyright (C) 2003-2015 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ tail
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grep '^#define HAVE_INOTIFY 1' "$CONFIG_HEADER" >/dev/null \
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&& HAVE_INOTIFY=1
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inotify_failed_re='inotify (resources exhausted|cannot be used)'
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touch here || framework_failure_
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{ touch unreadable && chmod a-r unreadable; } || framework_failure_
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# Terminate any background tail process
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cleanup_() { kill $pid 2>/dev/null && wait $pid; }
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# speedup non inotify case
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fastpoll='-s.1 --max-unchanged-stats=1'
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for mode in '' '---disable-inotify'; do
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timeout 10 tail $fastpoll -f $mode not_here
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test $? = 124 && fail=1
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if test ! -r unreadable; then # can't test this when root
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timeout 10 tail $fastpoll -f $mode unreadable
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test $? = 124 && fail=1
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fi
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timeout .1 tail $fastpoll -f $mode here 2>tail.err
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test $? = 124 || fail=1
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# 'tail -F' must wait in any case.
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timeout .1 tail $fastpoll -F $mode here 2>>tail.err
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test $? = 124 || fail=1
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if test ! -r unreadable; then # can't test this when root
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timeout .1 tail $fastpoll -F $mode unreadable
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test $? = 124 || fail=1
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fi
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timeout .1 tail $fastpoll -F $mode not_here
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test $? = 124 || fail=1
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grep -Ev "$inotify_failed_re" tail.err > x
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mv x tail.err
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compare /dev/null tail.err || fail=1
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>tail.err
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done
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if test "$HAVE_INOTIFY"; then
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# Ensure -F never follows a descriptor after rename
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# either with tiny or significant delays between operations
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tail_F()
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{
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local delay="$1"
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touch k || framework_failure_
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tail $fastpoll -F $mode k >tail.out 2>tail.err & pid=$!
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sleep $delay
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mv k l
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sleep $delay
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touch k
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mv k l
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sleep $delay
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echo NO >> l
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sleep $delay
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cleanup_
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rm -f k l
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test -s tail.out \
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&& ! grep -E "$inotify_failed_re" tail.err >/dev/null
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}
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retry_delay_ tail_F 0 1 && { cat tail.out; fail=1; }
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retry_delay_ tail_F .2 1 && { cat tail.out; fail=1; }
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fi
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Exit $fail
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