Patch for initramfs-tools (Was Re: process/procedure for fixes)

[Ben Collins]

On Mon, 2008-08-04 at 19:42 -0500, Paul Albrecht wrote:
> Here's the patch again:

A little better, but it's now a problem where it's line wrapping. I can
read it at least (but it wont apply without manually fixing it up).

> diff -Naur initramfs-tools-0.85eubuntu36.pristine/init
> initramfs-tools-0.85eubuntu36.hacked/init
> --- initramfs-tools-0.85eubuntu36.pristine/init 2008-04-09
> 09:45:23.000000000 -0500
> +++ initramfs-tools-0.85eubuntu36.hacked/init   2008-08-04
> 09:51:31.000000000 -0500
> @@ -125,6 +125,15 @@
>                 debug=y
>                 set -x
>                 ;;
> +        snapdev=*)
> +                SNAPDEV=${x#snapdev=}
> +                ;;
> +        snapfstype=*)
> +                SNAPFSTYPE=${x#snapfstype=}
> +                ;;
> +       aufs)
> +               AUFS=y
> +               ;;
>         break=*)
>                 break=${x#break=}
>                 ;;
> diff -Naur initramfs-tools-0.85eubuntu36.pristine/scripts/local
> initramfs-tools-0.85eubuntu36.hacked/scripts/local
> --- initramfs-tools-0.85eubuntu36.pristine/scripts/local
> 2008-04-09 09:18:14.000000000 -0500
> +++ initramfs-tools-0.85eubuntu36.hacked/scripts/local  2008-08-04
> 11:30:01.000000000 -0500
> @@ -107,6 +107,20 @@
>                 # FIXME This has no error checking
>                 mount ${roflag} -o loop -t ${FSTYPE} ${LOOPFLAGS}
> "/host/${LOOP#/}" ${rootmnt}
> 
> +               # Optionally remount the loop device with a copy-on-write layer
> +                if [ "$SNAPDEV" ] ; then
> +                        mkdir -p /snap
> +                        mount -n -t ${SNAPFSTYPE} ${SNAPDEV} /snap
> +                       if [ "$AUFS" = "y" ] ; then
> +                               mount -n -t aufs -o
> br:/snap=rw:${rootmnt}=ro none ${rootmnt}
> +                       else
> +                               mount -n -t unionfs -o
> dirs=/snap=rw:${rootmnt}=ro unionfs ${rootmnt}
> +                       fi
> +                        if [ -d ${rootmnt}/snap ]; then
> +                                mount -o move /snap ${rootmnt}/snap
> +                        fi
> +                fi
> +
>                 if [ -d ${rootmnt}/host ]; then
>                         mount -o move /host ${rootmnt}/host
>                 fi
> 
> -- Paul Albrecht