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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 gbl_storage::BlockIo;
use gbl_storage_testlib::TestBlockIo;
use libgbl::{
digest::Algorithm, BootImages, Context, Digest, FuchsiaBootImages, GblBuilder, GblOps,
GblOpsError,
};
use std::{collections::VecDeque, vec::Vec};
extern crate avb_sysdeps;
struct GblTestBlockIo {
io: TestBlockIo,
max_gpt_entries: u64,
}
/// `TestGblOps` provides mock implementation of GblOps for integration test.
#[derive(Default)]
struct TestGblOps<'a> {
block_io: Vec<GblTestBlockIo>,
console_out: VecDeque<u8>,
boot_cb: Option<MustUse<&'a mut dyn FnMut(BootImages)>>,
}
impl TestGblOps<'_> {
/// Adds a new block device.
pub(crate) fn add_block_device<T: AsRef<[u8]>>(
&mut self,
alignment: u64,
block_size: u64,
max_gpt_entries: u64,
data: T,
) {
self.block_io.push(GblTestBlockIo {
io: TestBlockIo::new(alignment, block_size, data),
max_gpt_entries: max_gpt_entries,
})
}
}
impl GblOps for TestGblOps<'_> {
type Context = TestDigestContext;
fn visit_block_devices(
&mut self,
f: &mut dyn FnMut(&mut dyn BlockIo, u64, u64),
) -> Result<(), GblOpsError> {
for (idx, ele) in self.block_io.iter_mut().enumerate() {
f(&mut ele.io, idx.try_into().unwrap(), ele.max_gpt_entries);
}
Ok(())
}
fn console_put_char(&mut self, ch: u8) -> Result<(), GblOpsError> {
Ok(self.console_out.push_back(ch))
}
fn should_stop_in_fastboot(&mut self) -> Result<bool, GblOpsError> {
Ok(false)
}
fn boot(&mut self, boot_images: BootImages) -> Result<(), GblOpsError> {
Ok((self.boot_cb.as_mut().unwrap().get())(boot_images))
}
}
/// Placeholder.
struct DigestBytes(Vec<u8>);
impl AsRef<[u8]> for DigestBytes {
fn as_ref(&self) -> &[u8] {
self.0.as_ref()
}
}
impl Digest for DigestBytes {
fn algorithm(&self) -> &Algorithm {
unimplemented!();
}
}
/// Placeholder.
struct TestDigestContext {}
impl Context for TestDigestContext {
type Digest = DigestBytes;
fn new(_: Algorithm) -> Self {
unimplemented!();
}
fn update(&mut self, _: &[u8]) {
unimplemented!();
}
fn finish(self) -> Self::Digest {
unimplemented!();
}
fn algorithm(&self) -> &Algorithm {
unimplemented!();
}
}
/// `MustUse` wraps an object and checks that it is accessed at least once before it's dropped.
/// In this integration test, it is mainly used to check that test provided ops callbacks are run.
struct MustUse<T: ?Sized> {
used: bool,
val: T,
}
impl<T: ?Sized> MustUse<T> {
/// Create a new instance.
fn new(val: T) -> Self
where
T: Sized,
{
Self { used: false, val: val }
}
/// Returns a mutable reference to the object.
fn get(&mut self) -> &mut T {
self.used = true;
&mut self.val
}
}
impl<T: ?Sized> Drop for MustUse<T> {
fn drop(&mut self) {
assert!(self.used)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_zircon_load_and_boot() {
// TODO(b/334962583): Invocation test only. Update this test once
// `Gbl::zircon_load_and_boot()` is implemented.
let mut boot_cb = |boot_images: BootImages| {
let BootImages::Fuchsia(FuchsiaBootImages { zbi_kernel, zbi_items }) = boot_images
else {
panic!("Wrong image type");
};
assert_eq!(zbi_kernel, include_bytes!("../testdata/zircon_a.bin"));
assert_eq!(zbi_items, []);
};
let mut ops: TestGblOps = Default::default();
ops.add_block_device(512, 512, 128, include_bytes!("../testdata/zircon_gpt.bin"));
ops.boot_cb = Some(MustUse::new(&mut boot_cb));
let mut gbl = GblBuilder::new(&mut ops).build();
let mut load_buffer = vec![0u8; 64 * 1024];
let _ = gbl.zircon_load_and_boot(&mut load_buffer[..]);
}
}
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