mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2026-08-05 02:19:16 +00:00
51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
Rust
// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
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//
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// Copyright © 2020, Microsoft Corporation
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//
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// Copyright 2018-2019 CrowdStrike, Inc.
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//
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// Copyright 2020, ARM Limited
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//
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use crate::DeviceAttr;
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use std::any::Any;
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use std::os::unix::io::AsRawFd;
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use thiserror::Error;
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#[derive(Error, Debug)]
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///
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/// Enum for device error
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pub enum HypervisorDeviceError {
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///
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/// Set device attribute error
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///
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#[error("Failed to set device attribute: {0}")]
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SetDeviceAttribute(#[source] anyhow::Error),
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///
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/// Get device attribute error
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///
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#[error("Failed to get device attribute: {0}")]
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GetDeviceAttribute(#[source] anyhow::Error),
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}
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///
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/// Result type for returning from a function
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///
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pub type Result<T> = std::result::Result<T, HypervisorDeviceError>;
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///
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/// Trait to represent a device
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///
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/// This crate provides a hypervisor-agnostic interfaces for device
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///
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pub trait Device: Send + Sync + AsRawFd {
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/// Set device attribute.
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fn set_device_attr(&self, attr: &DeviceAttr) -> Result<()>;
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/// Get device attribute.
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fn get_device_attr(&self, attr: &mut DeviceAttr) -> Result<()>;
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/// Provide a way to downcast to the device fd.
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fn as_any(&self) -> &dyn Any;
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}
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