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virtio-devices: balloon: Derive thiserror::Error
Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
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@ -28,6 +28,7 @@ use std::sync::{
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atomic::{AtomicBool, AtomicU64, Ordering},
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atomic::{AtomicBool, AtomicU64, Ordering},
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mpsc, Arc, Barrier, Mutex,
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mpsc, Arc, Barrier, Mutex,
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};
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};
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use thiserror::Error;
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use versionize::{VersionMap, Versionize, VersionizeResult};
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use versionize::{VersionMap, Versionize, VersionizeResult};
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use versionize_derive::Versionize;
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use versionize_derive::Versionize;
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use virtio_queue::{Queue, QueueT};
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use virtio_queue::{Queue, QueueT};
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@ -62,35 +63,35 @@ const VIRTIO_BALLOON_F_DEFLATE_ON_OOM: u64 = 2;
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// pages.
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// pages.
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const VIRTIO_BALLOON_F_REPORTING: u64 = 5;
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const VIRTIO_BALLOON_F_REPORTING: u64 = 5;
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#[derive(Debug)]
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#[derive(Error, Debug)]
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pub enum Error {
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pub enum Error {
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// Guest gave us bad memory addresses.
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#[error("Guest gave us bad memory addresses.: {0}")]
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GuestMemory(GuestMemoryError),
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GuestMemory(GuestMemoryError),
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// Guest gave us a write only descriptor that protocol says to read from.
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#[error("Guest gave us a write only descriptor that protocol says to read from.")]
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UnexpectedWriteOnlyDescriptor,
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UnexpectedWriteOnlyDescriptor,
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// Guest sent us invalid request.
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#[error("Guest sent us invalid request.")]
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InvalidRequest,
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InvalidRequest,
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// Fallocate fail.
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#[error("Fallocate fail.: {0}")]
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FallocateFail(std::io::Error),
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FallocateFail(std::io::Error),
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// Madvise fail.
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#[error("Madvise fail.: {0}")]
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MadviseFail(std::io::Error),
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MadviseFail(std::io::Error),
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// Failed to EventFd write.
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#[error("Failed to EventFd write.: {0}")]
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EventFdWriteFail(std::io::Error),
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EventFdWriteFail(std::io::Error),
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// Failed to EventFd try_clone.
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#[error("Failed to EventFd try_clone.: {0}")]
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EventFdTryCloneFail(std::io::Error),
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EventFdTryCloneFail(std::io::Error),
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// Failed to MpscRecv.
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#[error("Failed to MpscRecv.: {0}")]
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MpscRecvFail(mpsc::RecvError),
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MpscRecvFail(mpsc::RecvError),
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// Resize invalid argument
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#[error("Resize invalid argument: {0}")]
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ResizeInval(String),
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ResizeInval(String),
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// Invalid queue index
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#[error("Invalid queue index: {0}")]
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InvalidQueueIndex(usize),
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InvalidQueueIndex(usize),
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// Fail tp signal
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#[error("Fail tp signal: {0}")]
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FailedSignal(io::Error),
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FailedSignal(io::Error),
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/// Descriptor chain is too short
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#[error("Descriptor chain is too short")]
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DescriptorChainTooShort,
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DescriptorChainTooShort,
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/// Failed adding used index
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#[error("Failed adding used index: {0}")]
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QueueAddUsed(virtio_queue::Error),
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QueueAddUsed(virtio_queue::Error),
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/// Failed creating an iterator over the queue
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#[error("Failed creating an iterator over the queue: {0}")]
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QueueIterator(virtio_queue::Error),
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QueueIterator(virtio_queue::Error),
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}
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}
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