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ver 2.6

#!/bin/sh
#
# Update ELWIX OS flash images
#
# $Id: rc.flash,v 1.2 2021/03/11 13:59:50 misho Exp $

die() { echo -n "ERROR:: " >&2; echo "$@" >&2; exit 1; }

restoreing()
{
	case "$1" in
		primary|first|main|A|1)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"a") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"a") { printf("%s", $2 * 512); }'`

			sysctl -w kern.geom.debugflags=16
			imgupd -is $CFG_NAND_SIZE -f $CFG_NAND_MAP || die "Failed update primary image ..."
			tunefs -L elwix $CFG_NAND_MAP
			/etc/rc.cfg boot
			reboot
			;;
		secondary|second|backup|B|2)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"f") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"f") { printf("%s", $2 * 512); }'`

			imgupd -is $CFG_NAND_SIZE -f $CFG_NAND_MAP || die "Failed update secondary image ..."
			tunefs -L elwix2 $CFG_NAND_MAP
			/etc/rc.cfg boot2
			reboot
			;;
		configuration|config|cfg|C|0)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"g") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"g") { printf("%s", $2 * 512); }'`

			imgupd -is $CFG_NAND_SIZE -f $CFG_NAND_MAP || die "Failed update cfg image ..."
			reboot
			;;
		*)
			die "Unknown $1 image for restore ..."
			;;
	esac
}

dumping()
{
	case "$1" in
		primary|first|main|A|1)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"a") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"a") { printf("%s", $2 * 512); }'`
			;;
		secondary|second|backup|B|2)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"f") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"f") { printf("%s", $2 * 512); }'`
			;;
		configuration|config|cfg|C|0)
			CFG_NAND_MAP=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"g") { printf("/dev/%s", $3); }'`
			CFG_NAND_SIZE=`gpart show -p | awk '(NR == 1) { disk = $4; } ($3 == disk"g") { printf("%s", $2 * 512); }'`
			;;
		*)
			die "Unknown $1 image for dump ..."
			;;
	esac

	echo imgupd -gs $CFG_NAND_SIZE -f $CFG_NAND_MAP
}

#
## main()
#

case "$1" in
	dump|get|read|fetch)
		dumping $2
		;;
	restore|put|write|update)
		restoring $2
		;;
	*)
		echo "/etc/rc.flash <dump|restore> <primary|secondary|config>"
		echo
		die "Unknown command $1 ..."
		;;
esac