#!/bin/sh

. samizdat-paths.sh

iso=${samizdat_iso_dir}/samizdat.iso
disk=${samizdat_iso_dir}/samizdat.disk.img
layered=${samizdat_iso_dir}/${iso%.iso}.layered.iso

[ -f "$layered" ] && iso=$layered

[ "$1" ] && iso=$1

initrd.sh || { echo "initrd.sh failed" >&2; exit 1; };

[ "$NO_NET" ] || USE_NET=y

NET='tap,vlan=0,ifname=tap0,script=no,downscript=no'

[ "$SLOW_BOOT" ] || QEMU_LOADS_LINUX=y

# To use qemu built-in pxe boot server:
# NET='user,tftp=isolinux,bootfile=/pxelinux.0'

nbd_filename=samizdat.btrfs
[ "$NBD_FILENAME" ] && nbd_filename=$NBD_FILENAME

initrd=${samizdat_isolinux_dir}/linux/initrd.img
kernel=${samizdat_isolinux_dir}/linux/vmlinuz
kcmdline_CDROM='boot=samizdat components quiet splash'
kcmdline_CDROM_NET="${kcmdline_CDROM} nbdroot=,${nbd_filename}, nbddev=/dev/nbd0 ip=dhcp"
kcmdline_NET="${kcmdline_CDROM_NET} netkeys"

MAC='52-54-00-12-34-56'

kcmdline_BOOTIF="BOOTIF=01-$MAC"

set --
if [ "$USE_ISO" ]; then
    set -- "$@" -cdrom "$iso"
    if [ "$QEMU_LOADS_LINUX" ]; then
        set -- "$@" -initrd "$initrd" -kernel "$kernel"
        if [ "$NO_NET" ]; then
            set -- "$@" -append "$kcmdline_CDROM"
        else
            set -- "$@" -append "$kcmdline_CDROM_NET"
        fi
    else
        set -- "$@" -boot d
    fi
else
    if [ "$QEMU_LOADS_LINUX" ]; then
        set -- "$@" -initrd "$initrd" -kernel "$kernel" -append "$kcmdline_NET $kcmdline_BOOTIF"
    else
        set -- "$@" -boot n
    fi
fi

set -x
sudo qemu-system-x86_64 -enable-kvm -smp 2 -m 640 -k en-us \
     -vga qxl \
     -net nic,vlan=0,model=virtio,macaddr=$MAC \
     ${USE_NET:+ -net "$NET"} \
     -rtc base=localtime \
     -drive index=0,media=disk,format=raw,file="$disk" \
     "$@"