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virtio-devices: mem: Derive thiserror::Error

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Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen 2022-08-10 15:30:28 -07:00 committed by Rob Bradford
parent f9b36a3412
commit 54c484397e
1 changed files with 19 additions and 18 deletions
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37
virtio-devices/src/mem.rs
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@ -32,6 +32,7 @@ use std::result;
use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
use std::sync::mpsc;
use std::sync::{Arc, Barrier, Mutex};
use thiserror::Error;
use versionize::{VersionMap, Versionize, VersionizeResult};
use versionize_derive::Versionize;
use virtio_queue::{DescriptorChain, Queue, QueueT};
@ -103,41 +104,41 @@ const QUEUE_AVAIL_EVENT: u16 = EPOLL_HELPER_EVENT_LAST + 2;
// Virtio features
const VIRTIO_MEM_F_ACPI_PXM: u8 = 0;
#[derive(Debug)]
#[derive(Error, Debug)]
pub enum Error {
// Guest gave us bad memory addresses.
#[error("Guest gave us bad memory addresses: {0}")]
GuestMemory(GuestMemoryError),
// Guest gave us a write only descriptor that protocol says to read from.
#[error("Guest gave us a write only descriptor that protocol says to read from.")]
UnexpectedWriteOnlyDescriptor,
// Guest gave us a read only descriptor that protocol says to write to.
#[error("Guest gave us a read only descriptor that protocol says to write to.")]
UnexpectedReadOnlyDescriptor,
// Guest gave us too few descriptors in a descriptor chain.
#[error("Guest gave us too few descriptors in a descriptor chain.")]
DescriptorChainTooShort,
// Guest gave us a buffer that was too short to use.
#[error("Guest gave us a buffer that was too short to use.")]
BufferLengthTooSmall,
// Guest sent us invalid request.
#[error("Guest sent us invalid request.")]
InvalidRequest,
// Failed to EventFd write.
#[error("Failed to EventFd write: {0}")]
EventFdWriteFail(std::io::Error),
// Failed to EventFd try_clone.
#[error("Failed to EventFd try_clone: {0}")]
EventFdTryCloneFail(std::io::Error),
// Failed to MpscRecv.
#[error("Failed to MpscRecv: {0}")]
MpscRecvFail(mpsc::RecvError),
// Resize invalid argument
#[error("Resize invalid argument: {0}")]
ResizeError(anyhow::Error),
// Fail to resize trigger
#[error("Fail to resize trigger: {0}")]
ResizeTriggerFail(DeviceError),
// Invalid configuration
#[error("Invalid configuration: {0}")]
ValidateError(anyhow::Error),
// Failed discarding memory range
#[error("Failed discarding memory range: {0}")]
DiscardMemoryRange(std::io::Error),
// Failed DMA mapping.
#[error("Failed DMA mapping: {0}")]
DmaMap(std::io::Error),
// Failed DMA unmapping.
#[error("Failed DMA unmapping: {0}")]
DmaUnmap(std::io::Error),
// Invalid DMA mapping handler
#[error("Invalid DMA mapping handler.")]
InvalidDmaMappingHandler,
// Not activated by the guest
#[error("Not activated by the guest.")]
NotActivatedByGuest,
}