73 lines
2.5 KiB
Bash
Executable file
73 lines
2.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -Eeuo pipefail
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# Docker environment variables
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: ${BOOT:=''} # URL of the ISO file
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: ${DEBUG:='N'} # Enable debugging mode
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: ${ALLOCATE:='Y'} # Preallocate diskspace
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: ${ARGUMENTS:=''} # Extra QEMU parameters
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: ${CPU_CORES:='1'} # Amount of CPU cores
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: ${DISK_SIZE:='16G'} # Initial data disk size
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: ${RAM_SIZE:='512M'} # Maximum RAM amount
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echo "❯ Starting QEMU for Docker v${VERSION}..."
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info () { echo -e "\E[1;34m❯ \E[1;36m$1\E[0m" ; }
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error () { echo -e >&2 "\E[1;31m❯ ERROR: $1\E[0m" ; }
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trap 'error "Status $? while: ${BASH_COMMAND} (line $LINENO/$BASH_LINENO)"' ERR
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[ ! -f "/run/run.sh" ] && error "Script must run inside Docker container!" && exit 11
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[ "$(id -u)" -ne "0" ] && error "Script must be executed with root privileges." && exit 12
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STORAGE="/storage"
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KERNEL=$(uname -r | cut -b 1)
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MINOR=$(uname -r | cut -d '.' -f2)
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ARCH=$(dpkg --print-architecture)
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VERS=$(qemu-system-x86_64 --version | head -n 1 | cut -d '(' -f 1)
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[ ! -d "$STORAGE" ] && error "Storage folder (${STORAGE}) not found!" && exit 13
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if [ ! -f "$STORAGE/boot.img" ]; then
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. /run/install.sh
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fi
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. /run/disk.sh # Initialize disks
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. /run/network.sh # Initialize network
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KVM_ERR=""
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KVM_OPTS=""
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if [ -e /dev/kvm ] && sh -c 'echo -n > /dev/kvm' &> /dev/null; then
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if ! grep -q -e vmx -e svm /proc/cpuinfo; then
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KVM_ERR="(vmx/svm disabled)"
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fi
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else
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[ -e /dev/kvm ] && KVM_ERR="(no write access)" || KVM_ERR="(device file missing)"
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fi
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if [ -n "${KVM_ERR}" ]; then
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if [ "$ARCH" == "amd64" ]; then
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error "KVM acceleration not detected ${KVM_ERR}, see the FAQ about this."
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[[ "${DEBUG}" != [Yy1]* ]] && exit 88
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fi
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else
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KVM_OPTS=",accel=kvm -enable-kvm -cpu host"
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fi
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DEF_OPTS="-nographic -nodefaults -display none"
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RAM_OPTS=$(echo "-m ${RAM_SIZE}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
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CPU_OPTS="-smp ${CPU_CORES},sockets=1,dies=1,cores=${CPU_CORES},threads=1"
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MAC_OPTS="-machine type=q35,usb=off,dump-guest-core=off,hpet=off${KVM_OPTS}"
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SERIAL_OPTS="-serial mon:stdio -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3"
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EXTRA_OPTS="-device virtio-balloon-pci,id=balloon0 -object rng-random,id=rng0,filename=/dev/urandom -device virtio-rng-pci,rng=rng0"
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ARGS="${DEF_OPTS} ${CPU_OPTS} ${RAM_OPTS} ${MAC_OPTS} ${SERIAL_OPTS} ${NET_OPTS} ${DISK_OPTS} ${EXTRA_OPTS} ${ARGUMENTS}"
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ARGS=$(echo "$ARGS" | sed 's/\t/ /g' | tr -s ' ')
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trap - ERR
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info "Booting image using ${VERS}..."
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[[ "${DEBUG}" == [Yy1]* ]] && set -x
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exec qemu-system-x86_64 ${ARGS:+ $ARGS}
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{ set +x; } 2>/dev/null
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