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293c37b906
Automatically make all of the changes like this: -test "$VERBOSE" = yes && chgrp --version +print_ver_ chgrp git grep -l 'VERBOSE.*--version'|xargs perl -pi -e \ 's/test "\$VERBOSE" = yes && (\w+) --version/print_ver_ $1/'
56 lines
1.6 KiB
Bash
Executable File
56 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# Make sure that `tail -n0 -f' and `tail -c0 -f' sleep
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# rather than doing what amounted to a busy-wait.
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# Copyright (C) 2003, 2006-2010 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This bug was fixed for 5.0.91
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# It skips the test if your system lacks a /proc/$pid/status
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# file, or if its contents don't look right.
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. "${srcdir=.}/init.sh"; path_prepend_ ../src
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print_ver_ tail
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require_proc_pid_status_
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touch empty || framework_failure
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echo anything > nonempty || framework_failure
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for inotify in ---disable-inotify ''; do
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for file in empty nonempty; do
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for c_or_n in c n; do
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tail --sleep=4 -${c_or_n} 0 -f $inotify $file &
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pid=$!
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tail_sleeping()
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{
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local delay="$1"; sleep $delay
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state=$(get_process_status_ $pid)
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case $state in
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S*) ;;
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*) return 1;;
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esac
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}
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# Wait up to 1.5s for tail to sleep
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retry_delay_ tail_sleeping .1 4 ||
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{ echo $0: process in unexpected state: $state >&2; fail=1; }
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kill $pid
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done
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done
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done
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Exit $fail
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