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// Copyright 2022, The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! This module contains the error thrown by Rialto.
use aarch64_paging::MapError;
use core::{fmt, result};
use diced_open_dice::DiceError;
use fdtpci::PciError;
use libfdt::FdtError;
use service_vm_comm::RequestProcessingError;
use vmbase::{hyp::Error as HypervisorError, memory::MemoryTrackerError, virtio::pci};
pub type Result<T> = result::Result<T, Error>;
type CiboriumSerError = ciborium::ser::Error<virtio_drivers::Error>;
type CiboriumDeError = ciborium::de::Error<virtio_drivers::Error>;
#[derive(Debug)]
pub enum Error {
/// Hypervisor error.
Hypervisor(HypervisorError),
/// Failed when attempting to map some range in the page table.
PageTableMapping(MapError),
/// Invalid FDT.
InvalidFdt(FdtError),
/// Invalid PCI.
InvalidPci(PciError),
/// Failed memory operation.
MemoryOperationFailed(MemoryTrackerError),
/// Failed to initialize PCI.
PciInitializationFailed(pci::PciError),
/// Failed to create VirtIO Socket device.
VirtIOSocketCreationFailed(virtio_drivers::Error),
/// Missing socket device.
MissingVirtIOSocketDevice,
/// Failed VirtIO driver operation.
VirtIODriverOperationFailed(virtio_drivers::Error),
/// Failed to serialize.
SerializationFailed(CiboriumSerError),
/// Failed to deserialize.
DeserializationFailed(CiboriumDeError),
/// Failed DICE operation.
DiceOperationFailed(DiceError),
/// Failed to process request.
RequestProcessingFailed(RequestProcessingError),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::Hypervisor(e) => write!(f, "Hypervisor error: {e}."),
Self::PageTableMapping(e) => {
write!(f, "Failed when attempting to map some range in the page table: {e}.")
}
Self::InvalidFdt(e) => write!(f, "Invalid FDT: {e}"),
Self::InvalidPci(e) => write!(f, "Invalid PCI: {e}"),
Self::MemoryOperationFailed(e) => write!(f, "Failed memory operation: {e}"),
Self::PciInitializationFailed(e) => write!(f, "Failed to initialize PCI: {e}"),
Self::VirtIOSocketCreationFailed(e) => {
write!(f, "Failed to create VirtIO Socket device: {e}")
}
Self::MissingVirtIOSocketDevice => write!(f, "Missing VirtIO Socket device."),
Self::VirtIODriverOperationFailed(e) => {
write!(f, "Failed VirtIO driver operation: {e}")
}
Self::SerializationFailed(e) => write!(f, "Failed to serialize: {e}"),
Self::DeserializationFailed(e) => write!(f, "Failed to deserialize: {e}"),
Self::DiceOperationFailed(e) => write!(f, "Failed DICE operation: {e}"),
Self::RequestProcessingFailed(e) => write!(f, "Failed to process request: {e}"),
}
}
}
impl From<HypervisorError> for Error {
fn from(e: HypervisorError) -> Self {
Self::Hypervisor(e)
}
}
impl From<MapError> for Error {
fn from(e: MapError) -> Self {
Self::PageTableMapping(e)
}
}
impl From<FdtError> for Error {
fn from(e: FdtError) -> Self {
Self::InvalidFdt(e)
}
}
impl From<PciError> for Error {
fn from(e: PciError) -> Self {
Self::InvalidPci(e)
}
}
impl From<MemoryTrackerError> for Error {
fn from(e: MemoryTrackerError) -> Self {
Self::MemoryOperationFailed(e)
}
}
impl From<virtio_drivers::Error> for Error {
fn from(e: virtio_drivers::Error) -> Self {
Self::VirtIODriverOperationFailed(e)
}
}
impl From<CiboriumSerError> for Error {
fn from(e: CiboriumSerError) -> Self {
Self::SerializationFailed(e)
}
}
impl From<CiboriumDeError> for Error {
fn from(e: CiboriumDeError) -> Self {
Self::DeserializationFailed(e)
}
}
impl From<DiceError> for Error {
fn from(e: DiceError) -> Self {
Self::DiceOperationFailed(e)
}
}
impl From<RequestProcessingError> for Error {
fn from(e: RequestProcessingError) -> Self {
Self::RequestProcessingFailed(e)
}
}
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