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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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e05065f509
Bump to the released versions that are compatible wherever possible but for the vhost and vfio crates they are git hashes as no releases with compatible versions have yet been made. Signed-off-by: Rob Bradford <rbradford@meta.com>
51 lines
1.4 KiB
Rust
51 lines
1.4 KiB
Rust
// Copyright 2020 Arm Limited (or its affiliates). All rights reserved.
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//
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// SPDX-License-Identifier: Apache-2.0
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use std::io::{Read, Seek, SeekFrom};
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use std::os::fd::AsFd;
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use std::result;
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use thiserror::Error;
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use vm_memory::{Bytes, GuestAddress, GuestMemory};
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/// Errors thrown while loading UEFI binary
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#[derive(Debug, Error)]
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pub enum Error {
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/// Unable to seek to UEFI image start.
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#[error("Unable to seek to UEFI image start")]
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SeekUefiStart,
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/// Unable to seek to UEFI image end.
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#[error("Unable to seek to UEFI image end")]
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SeekUefiEnd,
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/// UEFI image too big.
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#[error("UEFI image too big")]
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UefiTooBig,
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/// Unable to read UEFI image
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#[error("Unable to read UEFI image")]
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ReadUefiImage,
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}
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type Result<T> = result::Result<T, Error>;
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pub fn load_uefi<F, M: GuestMemory>(
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guest_mem: &M,
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guest_addr: GuestAddress,
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uefi_image: &mut F,
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) -> Result<()>
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where
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F: Read + Seek + AsFd,
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{
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let uefi_size = uefi_image
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.seek(SeekFrom::End(0))
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.map_err(|_| Error::SeekUefiEnd)? as usize;
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// edk2 image on virtual platform is smaller than 3M
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if uefi_size > 0x300000 {
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return Err(Error::UefiTooBig);
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}
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uefi_image.rewind().map_err(|_| Error::SeekUefiStart)?;
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guest_mem
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.read_exact_volatile_from(guest_addr, &mut uefi_image.as_fd(), uefi_size)
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.map_err(|_| Error::ReadUefiImage)
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}
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