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virtio-devices: balloon: 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 13:47:07 -07:00 committed by Rob Bradford
parent b67755be17
commit 1793c1cb39
1 changed files with 16 additions and 15 deletions
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31
virtio-devices/src/balloon.rs
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@ -28,6 +28,7 @@ use std::sync::{
atomic::{AtomicBool, AtomicU64, Ordering},
mpsc, Arc, Barrier, Mutex,
};
use thiserror::Error;
use versionize::{VersionMap, Versionize, VersionizeResult};
use versionize_derive::Versionize;
use virtio_queue::{Queue, QueueT};
@ -62,35 +63,35 @@ const VIRTIO_BALLOON_F_DEFLATE_ON_OOM: u64 = 2;
// pages.
const VIRTIO_BALLOON_F_REPORTING: u64 = 5;
#[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 sent us invalid request.
#[error("Guest sent us invalid request.")]
InvalidRequest,
// Fallocate fail.
#[error("Fallocate fail.: {0}")]
FallocateFail(std::io::Error),
// Madvise fail.
#[error("Madvise fail.: {0}")]
MadviseFail(std::io::Error),
// 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}")]
ResizeInval(String),
// Invalid queue index
#[error("Invalid queue index: {0}")]
InvalidQueueIndex(usize),
// Fail tp signal
#[error("Fail tp signal: {0}")]
FailedSignal(io::Error),
/// Descriptor chain is too short
#[error("Descriptor chain is too short")]
DescriptorChainTooShort,
/// Failed adding used index
#[error("Failed adding used index: {0}")]
QueueAddUsed(virtio_queue::Error),
/// Failed creating an iterator over the queue
#[error("Failed creating an iterator over the queue: {0}")]
QueueIterator(virtio_queue::Error),
}