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axvm_types/
error.rs

1// Copyright 2026 The Axvisor Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15//! Architecture backend error contract shared with AxVM.
16
17/// Result returned by architecture virtualization backends.
18pub type VmBackendResult<T = ()> = Result<T, VmBackendError>;
19
20/// Failures reported by an architecture virtualization backend.
21#[derive(Clone, Copy, Debug, Eq, PartialEq, thiserror::Error)]
22pub enum VmBackendError {
23    /// The backend rejected a caller-provided value.
24    #[error("invalid virtualization backend input")]
25    InvalidInput,
26    /// The backend received malformed or inconsistent architecture data.
27    #[error("invalid virtualization backend data")]
28    InvalidData,
29    /// The backend state does not permit the requested operation.
30    #[error("invalid virtualization backend state")]
31    InvalidState,
32    /// The backend does not implement the requested operation.
33    #[error("unsupported virtualization backend operation")]
34    Unsupported,
35    /// The backend could not allocate the required memory.
36    #[error("virtualization backend memory allocation failed")]
37    OutOfMemory,
38    /// A backend resource is already owned or in use.
39    #[error("virtualization backend resource is busy")]
40    ResourceBusy,
41}