bfgminer/avalonhost-raminst

#!/bin/sh
# Copyright 2013 Luke Dashjr
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.  See COPYING for more details.

set -e
if test "$#" -lt 2; then
	echo "Usage: $0 <bfgminer-version> <temporary-packages...>"
	echo "Example: $0 testing bfgminer screen"
	echo "Installs <temporary-packages> to RAM, on an Avalon-host router"
	echo "Version can be 'stable', 'testing', or any 3-digit version; eg '3.1.0'"
	echo "Do NOT attempt to reverse (uninstall) except by rebooting"
	echo "Do NOT attempt to use this script more than once per boot"
	exit 1
fi
die() {
	echo "$@"
	echo 'ABORTING'
	exit 1
}
if ! grep TL-WR703N /proc/cpuinfo; then
	die 'This doesn'\''t seem to be an Avalon host system'
fi
if test "$USER" != "root"; then
	die "Must be run as root"
fi
echo "WARNING: If anything fails other than opkg and crontab, reboot ASAP"
source /lib/functions.sh
mkdir -p /tmp/root/.oldroot
mount -o noatime,lowerdir=/rom,upperdir=/tmp/root -t overlayfs "overlayfs:/tmp/root" /mnt
pivot /mnt /.oldroot
mount -o noatime,move /.oldroot/rom /rom
sed -i 's/\(^option[[:space:]]\+overlay_root[[:space:]]\+\).*//;T;d' /etc/opkg.conf
{
	echo 'option overlay_root /'
	echo "src/gz bfgminer http://luke.dashjr.org/programs/bitcoin/files/bfgminer/$1/openwrt/12.09/ar71xx"
} >> /etc/opkg.conf
shift
set +e
opkg update
opkg install "$@"
crontab -r  # disabled cgminer-monitor
set -e
mount -o noatime,lowerdir=/,upperdir=/overlay -t overlayfs "overlayfs:/overlay" /mnt
pivot /mnt /.oldroot
mount -o noatime,move /.oldroot/rom /rom