# Local loopback filesystem mounting                        -*- shell-script -*-

# Parameter: Where to mount the filesystem
mountroot ()
{
        for x in $(cat /proc/cmdline); do
                case $x in
                rootfstype=*)
                        rootfstype=${x#rootfstype=}
                        ;;
                loopfile=*)
                        loopfile=${x#loopfile=}
                        ;;
                loopfstype=*)
                        loopfstype=${x#loopfstype=}
                        ;;
                esac
        done

        [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-top"
        run_scripts /scripts/local-top
        [ "$quiet" != "y" ] && log_end_msg

        # If the root device hasn't shown up yet, give it a little while
        # to deal with removable devices
        if [ ! -e "${ROOT}" ]; then
                log_begin_msg "Waiting for root file system..."
                if [ -x /sbin/usplash_write ]; then
                        /sbin/usplash_write "TIMEOUT 180" || true
                fi

                slumber=1800
                while [ ${slumber} -gt 0 -a ! -e "${ROOT}" ]; do
                        /bin/sleep 0.1
                        slumber=$(( ${slumber} - 1 ))
                done

                if [ ${slumber} -gt 0 ]; then
                        log_end_msg 0
                else
                        log_end_msg 1 || true
               fi
               if [ -x /sbin/usplash_write ]; then
                       /sbin/usplash_write "TIMEOUT 15" || true
               fi
        fi

        # We've given up, but we'll let the user fix matters if they can
        while [ ! -e "${ROOT}" ]; do
                panic "ALERT!  ${ROOT} does not exist.  Dropping to a shell!"
        done

        eval $(fstype < ${ROOT})

        [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-premount"
        run_scripts /scripts/local-premount
        [ "$quiet" != "y" ] && log_end_msg

        # FIXME This has no error checking
        modprobe -q ${FSTYPE}

        # FIXME This has no error checking
        # Mount root
        mkdir /preroot

        if [ "${rootfstype}" ]; then
            opts="-t ${rootfstype}"
        fi
        # mount the device containing the file image as rw
        mount -w ${ROOTFLAGS} ${opts} ${ROOT} /preroot

        [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/log-bottom"
        run_scripts /scripts/local-bottom
        [ "$quiet" != "y" ] && log_end_msg


        if [ "${loopfstype}" ]; then
            opts="-t ${loopfstype}"
        fi
        # mount the file image loopback
        mount -o loop ${opts} /preroot/${loopfile} ${rootmnt}

        if [ -e "${rootmnt}/preroot" ]; then
            # bind mount the real device so that it is accessible later
            mount -o bind /preroot ${rootmnt}/preroot
        fi
}