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Initial revision

#!/bin/sh
# $Id: manage_pre,v 1.1 2009/08/12 18:13:52 andrew Exp $

local _pre_label='Pre'
local _ipod_label='iPod'
local _mount_dir='/mnt/pre'
local _name=`basename $0`

local _action="$*"
case "$_name" in
    eject_pre)
        _action=eject
        ;;
    sync_pre)
        _action=sync
        ;;
    mount_pre)
        _action=mount
        ;;
esac

if [ -z "$_action" ]; then
    echo "manage_pre mount|sync|eject"
    exit 255
fi

find_pre() {
    local _dev=`dmesg | grep 'Palm, Pre' | tail -1 | cut -d' ' -f 1`
    if [ X"$_dev" == X"" ]; then
	    echo Pre not found! >&2
	    exit 1
    fi

    local _label=`disklabel ${_dev} 2>/dev/null | awk '/^label:/ { print $2 }'`
    if [ X"$_label" != X"$_pre_label" -a X"$_label" != X"$_ipod_label" ]; then
	    echo "Pre not labeled properly [$_label]" >&2
	    exit 2
    fi

    echo /dev/${_dev}i
}

is_mounted() {
    /sbin/mount | grep "^${_dev} "
}

eject() {
    local _mounted=`is_mounted $_dev`
    if [ X"" != X"$_mounted" ]; then
        /bin/sync
        /sbin/umount $_dev && echo Unmounted Pre
    else
        echo Not mounted
    fi
    /bin/eject  $_dev 2> /dev/null && echo Ejected Pre
    rmdir $_mount_dir 2> /dev/null
}

mount() {
    local _mounted=`is_mounted $_dev`
    if [ X"" != X"$_mounted" ]; then
        echo Already mounted: ${_mounted%% type*}
        return
    fi
    mkdir -p $_mount_dir
	chgrp users $_mount_dir
	chmod g+w   $_mount_dir
    /sbin/mount $_dev $_mount_dir && echo Mounted Pre on $_mount_dir
}

synchronize() {
    local _mounted=`is_mounted $_dev`
    if [ X"" == X"$_mounted" ]; then
        echo Not mounted
        return 1
    fi

    echo Would have syncd

    #if [ -e /usr/local/bin/rsync ]; then
        #rsync -rv --delete --size-only --exclude '*.pid' \
            #.backgrounds/vogonpa/ /mnt/pre/wallpapers_mine/
    #fi
    #if [ -e /usr/local/bin/unison ]; then
        #/usr/local/bin/unison voganpa
    #fi
}

local _dev=`find_pre`
if [ X"${_dev}" == X"" -o ! -e $_dev ]; then
    echo "Unable to find Pre!"
    exit 3
fi

local _a
for _a in $_action; do
    case "$_a" in 
        mount)
            mount
            ;;
        sync)
            synchronize
            ;;
        eject)
            eject
            ;;
        *)
            echo "Unrecognized action [$_a]"
            ;;
    esac
done