mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-10-01 02:55:45 +00:00
8308e1bf25
Being able to reboot requires us to identify all the resources we are leaking and cleaning those up before we can enable reboot. For now if the user requests a reboot then shutdown instead. Signed-off-by: Rob Bradford <robert.bradford@intel.com>
73 lines
1.7 KiB
Rust
73 lines
1.7 KiB
Rust
// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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extern crate kvm_ioctls;
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#[macro_use]
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extern crate log;
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use kvm_ioctls::*;
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use std::fmt::{self, Display};
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use std::result;
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pub mod config;
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pub mod vm;
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use self::config::VmConfig;
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use self::vm::{ExitBehaviour, Vm};
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/// Errors associated with VM management
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#[derive(Debug)]
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pub enum Error {
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/// Cannot create a new VM.
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VmNew(vm::Error),
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/// Cannot start a VM.
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VmStart(vm::Error),
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/// Cannot load a kernel.
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LoadKernel(vm::Error),
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}
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pub type Result<T> = result::Result<T, Error>;
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impl Display for Error {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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use self::Error::*;
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match self {
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VmNew(e) => write!(f, "Can not create a new virtual machine: {:?}", e),
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VmStart(e) => write!(f, "Can not start a new virtual machine: {:?}", e),
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LoadKernel(e) => write!(f, "Can not load a guest kernel: {:?}", e),
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}
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}
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}
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struct Vmm {
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kvm: Kvm,
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}
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impl Vmm {
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fn new() -> Result<Self> {
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let kvm = Kvm::new().expect("new KVM instance creation failed");
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Ok(Vmm { kvm })
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}
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}
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pub fn boot_kernel(config: VmConfig) -> Result<()> {
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#[allow(clippy::never_loop)]
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loop {
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let vmm = Vmm::new()?;
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let mut vm = Vm::new(&vmm.kvm, &config).map_err(Error::VmNew)?;
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let entry = vm.load_kernel().map_err(Error::LoadKernel)?;
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if vm.start(entry).map_err(Error::VmStart)? == ExitBehaviour::Shutdown {
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break;
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}
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error!("Shutting down rather than rebooting due to known resource leaks: https://github.com/intel/cloud-hypervisor/issues/223");
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break;
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}
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Ok(())
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}
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