File zfs-fuse.init of Package zfs-fuse

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File zfs-fuse.init of Package zfs-fuse

#!/bin/bash
#
### BEGIN INIT INFO
# Provides:          zfs-fuse
# Required-Start:    $remote_fs
# Required-Stop:     $remote_fs
# Default-Start:     S 1 2 3 5
# Default-Stop:      0 6
# PIDFile:           /var/run/zfs/zfs-fuse.pid
# Short-Description: ZFS FUSE
# Description:       Start/stops the ZFS FUSE daemon and mounts/unmounts
#                    existing ZFS filesystems
### END INIT INFO

ZFS_FUSE=/usr/sbin/zfs-fuse
ZFS_FUSE_CONFIG=/etc/sysconfig/zfs-fuse
ZFS_NICE_LEVEL=0
ZFS_ALLOW_RELOAD=no
PIDFILE=/var/run/zfs/zfs-fuse.pid
PATH=/sbin:/bin:/usr/sbin:/usr/bin
LC_ALL=C
export PATH LC_ALL

ulimit -v unlimited
ulimit -c 512000
ulimit -l unlimited
ulimit -s unlimited

parse_boolean ()
{
    case $1 in
        [yY][eE][sS]|[tT][rR][uU][eE])
            return 0
            ;;
        [nN][oO]|[fF][aA][lL][sS][eE])
            return 1
            ;;
        *)
            return 2
            ;;
    esac
}

function start
{
    # start daemon
    startproc -n ${ZFS_NICE_LEVEL} -w -p "${PIDFILE}" \
        ${ZFS_FUSE} --pidfile "${PIDFILE}" >/dev/null 2>&1 || return $?
    read -r zfs_fuse_pid < "${PIDFILE}"
    [[ ${zfs_fuse_pid} != "" ]] || return 1

# protect against OOM-killer
    printf -- "-17\n" > "/proc/${zfs_fuse_pid}/oom_adj"

# mount all filesystems
    zfs mount -a

return 0
}

function stop
{
    # check if running
    checkproc -k -p "${PIDFILE}" ${ZFS_FUSE} || return 0
    read -r zfs_fuse_pid < "${PIDFILE}"
    [[ ${zfs_fuse_pid} != "" ]] || return 1

# try to unmount all filesystems
    if ! zfs umount -a; then
        # when shutting down forcibly unmount, otherwise return an error
        if ((RUNLEVEL == 0)) || ((RUNLEVEL == 6)); then
            zfs umount -a -f
        else
            return 1
        fi
    fi

# terminate zfs-fuse daemon
    killproc -p "${PIDFILE}" ${ZFS_FUSE}
    for ((i=0; i<10; i++)); do
        kill -0 "${zfs_fuse_pid}" >/dev/null 2>&1 || return 0
        sleep 1
    done
    return 3
}

function restart
{
    if ! parse_boolean "${ZFS_ALLOW_RELOAD}"; then
        return 1
    fi
    stop || return $?
    start || return $?
}

function status
{
    checkproc -k -p "${PIDFILE}" ${ZFS_FUSE}
}

if [[ ! -x ${ZFS_FUSE} ]]; then
    printf "zfs-fuse is not installed\n"
    [[ $1 == stop ]] && exit 0 || exit 5
fi

if [[ ! -r ${ZFS_FUSE_CONFIG} ]]; then
    printf "zfs fuse is not configured, %s does not exist\n" \
        "${ZFS_FUSE_CONFIG}"
    [[ $1 == "stop" ]] && exit 0 || exit 6
fi
. "${ZFS_FUSE_CONFIG}"

. /etc/rc.status

rc_reset

case $1 in
    start)
        printf "Starting zfs-fuse daemon"
        start
        rc_status -v
        ;;
    stop)
        printf "Shutting down zfs-fuse daemon"
        stop
        rc_status -v
        ;;
    try-restart)
        if status; then
            printf "Restarting zfs-fuse daemon"
            restart
            rc_status -v
        else
            exit 0
        fi
        ;;
    restart|force-reload)
        printf "Restarting zfs-fuse daemon"
        restart
        rc_status -v
        ;;
    status)
        printf "Checking for zfs-fuse daemon"
        status
        rc_status -v
        ;;
    *)
        printf "Usage: %s {start|stop|status|try-restart|restart|force-reload}\n" "${0##*/}"
        exit 2
        ;;
esac

rc_exit

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File zfs-fuse.init of Package zfs-fuse

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