~ubuntu-installer/lupin/hardy

#! /bin/sh

# /etc/init.d/mounthost: Remount /host folder read write

#

# Written by Agostino Russo <agostino.russo@gmail.com> based on checkroot.sh

# NOTE: should /host be in fstab

#

### BEGIN INIT INFO

# Provides:        mounthost

# Required-Start:    mountdevsubfs

# Required-Stop:

# Default-Start:    S

# Default-Stop:

# Short-Description:    Remount /host folder read write.

### END INIT INFO

PATH=/sbin:/bin

. /lib/init/vars.sh

. /lib/lsb/init-functions

do_start() {

    [ "$VERBOSE" = no ] || log_action_begin_msg "Mounting host filesystem read-write"

    hosttype=none

    hostopts=defaults

    hostmode=rw

    hostcheck=no

    ES=$?

    loopfile_fstab_line=$(sed -n '\:^/[^ ]*[ ]*[ ]/[ ][ ]*[^ ]*[ ].*loop.*[ ]:p' /etc/fstab)

    host_mountpoint=${loopfile_fstab_line%% *}

    while [ -z "$host_device" ] && [ -n "$host_mountpoint" ] && [ ! "$host_mountpoint" = "/" ]; do

        host_mountpoint="${host_mountpoint%/*}"

        host_device=$(sed -n "\:^/[^ ]*[ ]*[ ]$host_mountpoint :p" /proc/mounts)

        host_device=${host_device%% *}

    done

    if [ -n "$host_device" ]; then

        if [ "$hostcheck" = yes ]; then

            if \

                ! mount    -n -o remount,ro              "$host_device" /host             \

                && ! mount -n -o remount,ro -t dummytype "$host_device" /host 2>/dev/null \

                && ! mount -n -o remount,ro            "$host_device"  /host 2>/dev/null

            then

                log_failure_msg "Cannot check host file system because it is not mounted read-only."

                rootcheck=no

            fi

            #TBD add fs checking

            #skipping since not supported by ntfs-3g

        fi

        mount -n -o remount,$hostopts,$hostmode "$host_device" /host

        ES=$?

    fi

    [ "$VERBOSE" = no ] || log_action_end_msg "$ES"

}

case "$1" in

  start)

    do_start

    ;;

  restart|reload|force-reload)

    echo "Error: argument '$1' not supported" >&2

    exit 3

    ;;

  stop)

    # No-op

    ;;

  *)

    echo "Usage: $0 start|stop" >&2

    exit 3

    ;;

esac

: