start on MYDOCS_REPLACED

description "unmounts normal MyDocs filesystem and replaces it with the SD card"

# Runs afer rcS-late has mounted everything
start on MOUNTS_OK

console none

script

        # Alter the next six lines if necessary for your system
        MYDOCS_DEVICE=/dev/mmcblk0p1
        SD_DEVICE=/dev/mmcblk1p1
        MYDOCS_MOUNTPOINT=/home/user/MyDocs
        MYDOCS_FILESYSTEM=vfat
        SD_MOUNTPOINT=/media/mmc1
        SD_FILESYSTEM=vfat

        # Check that MyDocs hasn't already been replaced
        if [ ! -z "`mount | grep $MYDOCS_MOUNTPOINT | grep $SD_DEVICE`" ]
        then
                # Already mounted.
                normal exit 0
        fi
        # It can take a few seconds for MyDocs to actually mount after rsS-late
        # has finished, so we'll watch for it
        i=0
        while [ -z "`mount | grep $MYDOCS_MOUNTPOINT`" -o -z "`mount | grep $SD_MOUNTPOINT`" ]
        do
                i=$(($i+1))
                if [ $i -eq 120 ]
                then
                        # If it hasn't mounted within two minutes, something's gone
                        # horribly wrong, so we may as well give up
                        normal exit 0
                fi
                sleep 1
        done
        # Get mount options from the fstab file
        OPTS=`grep $MYDOCS_MOUNTPOINT /etc/fstab | awk ' { print $4 } '`

        # Unmount the SD card
        umount $SD_MOUNTPOINT
        # Check it unmouted OK
        if [ $? -eq 0 ]
        then
                # Unmount the MyDocs filesystem
                umount $MYDOCS_MOUNTPOINT
                # Check it unmounted OK
                if [ $? -eq 0 ]
                then
                        # Mount the SD on MyDocs
                        mount $SD_DEVICE -t $SD_FILESYSTEM -o "$OPTS" $MYDOCS_MOUNTPOINT
                        if [ $? -ne 0 ]
                        then
                                # Failed to mount the SD so fall back to original
                                mount $MYDOCS_DEVICE -t $MYDOCS_FILESYSTEM -o "$OPTS" $MYDOCS_MOUNTPOINT
                        else
                                initctl emit MYDOCS_REPLACED
                        fi
                fi
        fi

end script
normal exit 0