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// Copyright 2024, 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.
use avb::{IoError, SlotVerifyError};
use boot::BootError;
use bootconfig::BootConfigError;
use bootimg::ImageError;
use efi::EfiError;
use fastboot::TransportError;
use fdt::FdtError;
use gbl_storage::StorageError;
use misc::BcbError;
use smoltcp::socket::tcp::{ListenError, RecvError, SendError};
use zbi::ZbiError;
/// Error types for EFI application.
#[derive(Debug)]
pub enum EfiAppError {
ArithmeticOverflow,
BufferAlignment,
BufferTooSmall,
InvalidInput,
InvalidString,
NoFdt,
NotFound,
NoZbiImage,
PeerClosed,
Timeout,
Unsupported,
}
/// A convenient macro for declaring a composite enum type that simply wraps other types as
/// entries. It auto-generate `From<...>` implementation for each entry type. i.e.:
///
/// ```rust
/// composite_enum! {
/// pub enum MyEnum {
/// Usize(usize),
/// I64(i64),
/// }
/// }
/// ```
///
/// expands to
///
/// ```rust
/// pub enum MyEnum {
/// Usize(usize),
/// I64(i64),
/// }
///
/// impl From<usize> for MyEnum {
/// fn from(entry: usize) -> MyEnum {
/// MyEnum::Usize(entry)
/// }
/// }
///
/// impl From<i64> for MyEnum {
/// fn from(entry: i64) -> MyEnum {
/// MyEnum::I64(entry)
/// }
/// }
/// ```
///
/// The macro assumes that each entry is a different type.
macro_rules! composite_enum {
// Top level macro entry. Match enum declaration code and call recursively for `From<>`
// generation.
(
$(#[$outer:meta])*
$vis:vis enum $EnumName:ident {
$($entry:ident($entry_type:ty)),*
$(,)*
}
) => {
// Copy over enum declaration as it is.
$(#[$outer])*
$vis enum $EnumName {
$($entry($entry_type)),*
}
// Generate `From<...>` implementation.
composite_enum!{$EnumName, $($entry($entry_type)),*}
};
// `From<>` implementation generation. Base case.
($EnumName:ident, $entry:ident($entry_type:ty)) => {
impl From<$entry_type> for $EnumName {
fn from(entry: $entry_type) -> $EnumName {
$EnumName::$entry(entry)
}
}
};
// `From<>` implementation generation. Recursive case.
($EnumName:ident, $entry:ident($entry_type:ty), $($entry_next:ident($entry_type_next:ty)),+) => {
composite_enum!{$EnumName, $entry($entry_type)}
composite_enum!{$EnumName, $($entry_next($entry_type_next)),*}
};
}
composite_enum! {
/// A top level error type that consolidates errors from different libraries.
#[derive(Debug)]
pub enum GblEfiError {
AvbIoError(IoError),
BcbError(BcbError),
BootConfigError(BootConfigError),
BootError(BootError),
EfiAppError(EfiAppError),
EfiError(EfiError),
FdtError(FdtError),
ImageError(ImageError),
ListenError(ListenError),
RecvError(RecvError),
SendError(SendError),
SlotVerifyError(SlotVerifyError<'static>),
StorageError(StorageError),
TransportError(TransportError),
ZbiError(ZbiError),
}
}
/// Top level error type.
pub type Result<T> = core::result::Result<T, GblEfiError>;
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