#!/bin/sh

# Wonder what the heck is /srv ? Read Filesystem Hierarchy Standard,
# http://www.pathname.com/fhs/pub/fhs-2.3.html#SRVDATAFORSERVICESPROVIDEDBYSYSTEM
# So, /srv/nfs is root of all NFS exports your system offers, and /srv/nfs/oe is
# OpenEmbedded's subset (think security).
NFS_ROOT=/srv/nfs/oe

if [ -z "$1" ]; then
    echo "$0 - Deploy OpenEmbedded-generated image for device NFS boot"
    echo "Usage: $0 <image> | -l"
    exit
fi

if [ "$1" == "-l" ]; then
    if [ -n "$2" ]; then
	extra="-name *$2*"
    fi
    find tmp/deploy/ -regextype posix-extended -wholename '*/images/*' -regex '.+\.(tar\.bz2|tar\.gz|cpio\.gz)$' $extra | xargs ls -l
    exit
fi

if [ ! -f $1 ]; then
    echo "Cannot find image $1"
    exit
fi

ext=`echo $1 | sed -r -e 's/.+\.([^.]+\.[^.]+)/\1/'`
basename=`basename $1 .$ext`

if [ -z "$basename" ]; then
    echo "Assertion failed"
    exit 100
fi

echo "Deploying to: $NFS_ROOT/$basename"

rm -rf $NFS_ROOT/$basename

mkdir -p $NFS_ROOT/$basename

if [ "$ext" == "tar.bz2" ]; then
    tar -xj -f $1 -C $NFS_ROOT/$basename
elif [ "$ext" == "tar.gz" ]; then
    tar -xz -f $1 -C $NFS_ROOT/$basename
else
    FPATH=`pwd`
    cd $NFS_ROOT/$basename 
    bash -c "gzip -d -c $FPATH/$1 | cpio -i --no-absolute-filenames"
    cd $FPATH
fi