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contrib/openrc/sh/rc-mount.sh
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:executable | null | * \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| # Copyright (c) 2007-2015 The OpenRC Authors. | |||||
| # See the Authors file at the top-level directory of this distribution and | |||||
| # https://github.com/OpenRC/openrc/blob/master/AUTHORS | |||||
| # | |||||
| # This file is part of OpenRC. It is subject to the license terms in | |||||
| # the LICENSE file found in the top-level directory of this | |||||
| # distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE | |||||
| # This file may not be copied, modified, propagated, or distributed | |||||
| # except according to the terms contained in the LICENSE file. | |||||
| # Declare this here so that no formatting doesn't affect the embedded newline | |||||
| __IFS=" | |||||
| " | |||||
| # Handy function to handle all our unmounting needs | |||||
| # mountinfo is a C program to actually find our mounts on our supported OS's | |||||
| # We rely on fuser being present, so if it's not then don't unmount anything. | |||||
| # This isn't a real issue for the BSD's, but it is for Linux. | |||||
| do_unmount() | |||||
| { | |||||
| local cmd="$1" retval=0 retry= pids=- | |||||
| local f_opts="-m -c" f_kill="-s " mnt= | |||||
| if [ "$RC_UNAME" = "Linux" ]; then | |||||
| f_opts="-m" | |||||
| f_kill="-" | |||||
| fi | |||||
| shift | |||||
| local IFS="$__IFS" | |||||
| set -- $(mountinfo "$@") | |||||
| unset IFS | |||||
| for mnt; do | |||||
| # Unmounting a shared mount can unmount other mounts, so | |||||
| # we need to check the mount is still valid | |||||
| mountinfo --quiet "$mnt" || continue | |||||
| # Ensure we interpret all characters properly. | |||||
| mnt=$(printf "$mnt") | |||||
| case "$cmd" in | |||||
| umount) | |||||
| ebegin "Unmounting $mnt" | |||||
| ;; | |||||
| *) | |||||
| ebegin "Remounting $mnt read only" | |||||
| ;; | |||||
| esac | |||||
| retry=4 # Effectively TERM, sleep 1, TERM, sleep 1, KILL, sleep 1 | |||||
| while ! LC_ALL=C $cmd "$mnt" 2>/dev/null; do | |||||
| if command -v fuser >/dev/null 2>&1; then | |||||
| pids="$(timeout -k 10 -s KILL "${rc_fuser_timeout:-60}" \ | |||||
| fuser $f_opts "$mnt" 2>/dev/null)" | |||||
| fi | |||||
| case " $pids " in | |||||
| *" $$ "*) | |||||
| eend 1 "failed because we are using" \ | |||||
| "$mnt" | |||||
| retry=0;; | |||||
| " - ") | |||||
| eend 1 | |||||
| retry=0;; | |||||
| " ") | |||||
| eend 1 "in use but fuser finds nothing" | |||||
| retry=0;; | |||||
| *) | |||||
| if [ $retry -le 0 ]; then | |||||
| eend 1 | |||||
| else | |||||
| local sig="TERM" | |||||
| : $(( retry -= 1 )) | |||||
| [ $retry = 1 ] && sig="KILL" | |||||
| fuser $f_kill$sig -k $f_opts \ | |||||
| "$mnt" >/dev/null 2>&1 | |||||
| sleep 1 | |||||
| fi | |||||
| ;; | |||||
| esac | |||||
| [ $retry -le 0 ] && break | |||||
| done | |||||
| if [ $retry -le 0 ]; then | |||||
| retval=1 | |||||
| else | |||||
| eend 0 | |||||
| fi | |||||
| done | |||||
| return $retval | |||||
| } | |||||