vm

#!/bin/bash

BASE=$HOME/p/linux-trees
TREE=$BASE/linux
BUILD_DIR=$BASE/build-linux

QEMU_ARCH="x86_64"
QEMU="qemu-system-${QEMU_ARCH}"
QEMU_OPTS="-enable-kvm -smp 2 -m 1024"
VDISK="$HOME/p/virty.qcow2"
QEMU_MNT="/mnt/qemu"

TARGET="qemu"

set -e

function vm_mount_old {
	sudo mount -o loop,offset=32256 $VDISK $QEMU_MNT
}

function vm_mount {
	sudo modprobe nbd max_part=63
	sudo qemu-nbd -c /dev/nbd0 $VDISK
	sudo partprobe /dev/nbd0
	sudo mount /dev/nbd0p1 $QEMU_MNT
}
function vm_umount {
	sudo umount $QEMU_MNT
	sudo qemu-nbd -d /dev/nbd0
	sudo killall -q qemu-nbd
}

function vm_boot {
$QEMU -hda $VDISK \
	${QEMU_OPTS} \
	-kernel $BUILD_DIR/$TARGET/arch/x86/boot/bzImage \
	-append "root=/dev/sda1 debug console=ttyS0 console=ttyS1 console=tty1" \
	-net nic -net user,hostfwd=tcp::5555-:22 \
	-serial stdio \
	-device virtio-gpu-pci,virgl -display gtk,gl=on 2> /dev/null
}

function mk_help {
	echo -e "Usage: $0 [target] cmd"

	echo -e "\nCommands:\n" \
		"\tmount\n" \
		"\tumount\n" \
		"\tospack <pack>\n" \
		"\tboot\n" \
		"\thelp"
}

case "$1" in
	mount)
		vm_mount
		;;
	umount)
		vm_umount
		;;
	boot)
		vm_boot
		;;
	help)
		mk_help
		;;
	*)
		mk_help
		exit 1
esac

exit 0