Sync

#!/usr/bin/env bash

set -eu

# Docker environment variabeles

: ${URL:=''}.                     # URL of the ISO file

: ${DEBUG:=''}.               # Enable debug mode

: ${ALLOCATE:='Y'}       # Preallocate diskspace

: ${CPU_CORES:='1'}     # vCPU count

: ${DISK_SIZE:='16G'}    # Initial disk size

: ${RAM_SIZE:='512M'} # Amount of RAM

echo "Starting QEMU for Docker v${VERSION}..."

STORAGE="/storage"

# Configure shutdown

. /run/power.sh

KVM_ACC_OPTS=""

KVM_OPTS=""

if [ -e /dev/kvm ] && sh -c 'echo -n > /dev/kvm' &> /dev/null; then

  if [[ $(grep -e vmx -e svm /proc/cpuinfo) ]]; then

    KVM_ACC_OPTS="-machine type=q35,usb=off,accel=kvm -enable-kvm -cpu host"

    KVM_OPTS=",accel=kvm -enable-kvm -cpu host"

  fi

fi

[ -z "${KVM_ACC_OPTS}" ] && echo "Error: KVM acceleration is disabled.." && exit 88

if [ -z "${KVM_OPTS}" ]; then

  echo "Error: KVM acceleration is disabled.."

  [ "$DEBUG" != "Y" ] && exit 88

fi

RAM_SIZE=$(echo "${RAM_SIZE}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')

KVM_SERIAL_OPTS="-serial mon:stdio -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3"

EXTRA_OPTS="-nographic -object rng-random,id=rng0,filename=/dev/urandom -device virtio-rng-pci,rng=rng0 -device virtio-balloon-pci,id=balloon0,bus=pcie.0,addr=0x4"

ARGS="-m ${RAM_SIZE} -smp ${CPU_CORES} ${KVM_ACC_OPTS} ${EXTRA_OPTS} ${KVM_MON_OPTS} ${KVM_SERIAL_OPTS} ${KVM_NET_OPTS} ${KVM_DISK_OPTS}"

DEF_OPTS="-nographic -nodefaults"

KVM_OPTS="-machine type=q35,usb=off${KVM_OPTS}"

RAM_OPTS=$(echo "-m ${RAM_SIZE}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')

CPU_OPTS="-smp ${CPU_CORES},sockets=1,cores=${CPU_CORES},threads=1"

SERIAL_OPTS="-serial mon:stdio -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3"

EXTRA_OPTS="-device virtio-balloon-pci,id=balloon0 -object rng-random,id=rng0,filename=/dev/urandom -device virtio-rng-pci,rng=rng0"

ARGS="${DEF_OPTS} ${CPU_OPTS} ${RAM_OPTS} ${KVM_OPTS} ${MON_OPTS} ${SERIAL_OPTS} ${NET_OPTS} ${DISK_OPTS} ${EXTRA_OPTS}"

set -m

(