187 lines
6.3 KiB
Python
187 lines
6.3 KiB
Python
import random
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from collections.abc import Generator
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from contextlib import contextmanager
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from dataclasses import dataclass
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from pathlib import Path
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from clan_cli.errors import ClanError
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from clan_cli.qemu.qmp import QEMUMonitorProtocol
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from .inspect import VmConfig
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@dataclass
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class GraphicOptions:
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args: list[str]
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vsock_cid: int | None = None
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def graphics_options(vm: VmConfig) -> GraphicOptions:
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common = [
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"-audio",
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"driver=pa,model=virtio",
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]
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if vm.waypipe.enable:
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# FIXME: check for collisions
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cid = random.randint(1, 2**32)
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# fmt: off
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return GraphicOptions([
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*common,
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"-nographic",
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"-device", f"vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid={cid}",
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"-vga", "none",
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#"-display", "egl-headless,gl=core",
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# this would make the gpu part of the hypervisor
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#"-device", "virtio-vga-gl,blob=true",
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# This is for an external gpu process
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#"-device", "virtio-serial-pci",
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#"-device", "vhost-user-vga,chardev=vgpu",
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#"-chardev", "socket,id=vgpu,path=/tmp/vgpu.sock",
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], cid)
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# fmt: on
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if Path("/run/opengl-driver").exists():
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display_options = [
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"-vga",
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"none",
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"-display",
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"gtk,gl=on",
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"-device",
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"virtio-gpu-gl",
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"-display",
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"spice-app,gl=on",
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]
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else:
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display_options = ["-display", "spice-app"]
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# fmt: off
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return GraphicOptions([
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*common,
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*display_options,
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"-device", "virtio-serial-pci",
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"-chardev", "spicevmc,id=vdagent0,name=vdagent",
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"-device", "virtserialport,chardev=vdagent0,name=com.redhat.spice.0",
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"-device", "qemu-xhci,id=spicepass",
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"-chardev", "spicevmc,id=usbredirchardev1,name=usbredir",
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"-device", "usb-redir,chardev=usbredirchardev1,id=usbredirdev1",
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"-chardev", "spicevmc,id=usbredirchardev2,name=usbredir",
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"-device", "usb-redir,chardev=usbredirchardev2,id=usbredirdev2",
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"-chardev", "spicevmc,id=usbredirchardev3,name=usbredir",
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"-device", "usb-redir,chardev=usbredirchardev3,id=usbredirdev3",
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"-device", "pci-ohci,id=smartpass",
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"-device", "usb-ccid",
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"-chardev", "spicevmc,id=ccid,name=smartcard",
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], None)
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# fmt: on
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@dataclass
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class QemuCommand:
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args: list[str]
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vsock_cid: int | None = None
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def qemu_command(
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vm: VmConfig,
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nixos_config: dict[str, str],
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secrets_dir: Path,
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rootfs_img: Path,
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state_img: Path,
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virtiofsd_socket: Path,
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qmp_socket_file: Path,
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qga_socket_file: Path,
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portmap: dict[int, int] | None = None,
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interactive: bool = False,
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) -> QemuCommand:
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if portmap is None:
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portmap = {}
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kernel_cmdline = [
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(Path(nixos_config["toplevel"]) / "kernel-params").read_text(),
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f'init={nixos_config["toplevel"]}/init',
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f'regInfo={nixos_config["regInfo"]}/registration',
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"console=hvc0",
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]
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if not vm.waypipe.enable:
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kernel_cmdline.append("console=tty0")
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hostfwd = ",".join(f"hostfwd=tcp::{h}-:{g}" for h, g in portmap.items())
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# fmt: off
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command = [
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"qemu-kvm",
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"-name", vm.machine_name,
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"-m", f'{nixos_config["memorySize"]}M',
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"-object", f"memory-backend-memfd,id=mem,size={nixos_config['memorySize']}M",
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"-machine", "pc,memory-backend=mem,accel=kvm",
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"-smp", str(nixos_config["cores"]),
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"-cpu", "max",
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"-enable-kvm",
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# speed-up boot by not waiting for the boot menu
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"-boot", "menu=off,strict=on",
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"-device", "virtio-rng-pci",
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"-netdev", f"user,id=user.0,{hostfwd}",
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"-device", "virtio-net-pci,netdev=user.0,romfile=",
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"-chardev", f"socket,id=char1,path={virtiofsd_socket}",
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"-device", "vhost-user-fs-pci,chardev=char1,tag=nix-store",
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"-virtfs", f"local,path={secrets_dir},security_model=none,mount_tag=secrets",
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"-drive", f"cache=writeback,file={rootfs_img},format=qcow2,id=drive1,if=none,index=1,werror=report",
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"-device", "virtio-blk-pci,bootindex=1,drive=drive1,serial=root",
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"-drive", f"cache=writeback,file={state_img},format=qcow2,id=state,if=none,index=2,werror=report",
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"-device", "virtio-blk-pci,drive=state",
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"-device", "virtio-keyboard",
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"-usb", "-device", "usb-tablet,bus=usb-bus.0",
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"-kernel", f'{nixos_config["toplevel"]}/kernel',
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"-initrd", nixos_config["initrd"],
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"-append", " ".join(kernel_cmdline),
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# qmp & qga setup
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"-qmp", f"unix:{qmp_socket_file},server,wait=off",
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"-chardev", f"socket,path={qga_socket_file},server=on,wait=off,id=qga0",
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"-device", "virtio-serial",
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"-device", "virtserialport,chardev=qga0,name=org.qemu.guest_agent.0",
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] # fmt: on
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if interactive:
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command.extend([
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"-serial", "null",
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"-chardev", "stdio,mux=on,id=char0,signal=off",
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"-mon", "chardev=char0,mode=readline",
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"-device", "virtconsole,chardev=char0,nr=0",
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])
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else:
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command.extend([
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"-serial", "null",
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"-chardev", "file,id=char0,path=/dev/stdout",
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"-device", "virtconsole,chardev=char0,nr=0",
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])
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vsock_cid = None
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if vm.graphics:
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opts = graphics_options(vm)
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vsock_cid = opts.vsock_cid
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command.extend(opts.args)
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else:
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command.append("-nographic")
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return QemuCommand(command, vsock_cid=vsock_cid)
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class QMPWrapper:
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def __init__(self, state_dir: Path) -> None:
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# These sockets here are just symlinks to the real sockets which
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# are created by the run.py file. The reason being that we run into
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# file path length issues on Linux. If no qemu process is running
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# the symlink will be dangling.
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self._qmp_socket: Path = state_dir / "qmp.sock"
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self._qga_socket: Path = state_dir / "qga.sock"
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@contextmanager
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def qmp_ctx(self) -> Generator[QEMUMonitorProtocol, None, None]:
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rpath = self._qmp_socket.resolve()
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if not rpath.exists():
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msg = f"qmp socket {rpath} does not exist. Is the VM running?"
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raise ClanError(msg)
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qmp = QEMUMonitorProtocol(str(rpath))
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qmp.connect()
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try:
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yield qmp
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finally:
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qmp.close()
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