文章目录
- [[清华开源操作系统训练营]《Rust fox Linux》课程的练习1-2完整版记录。](#[清华开源操作系统训练营]《Rust fox Linux》课程的练习1-2完整版记录。)
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- [1. 环境搭建](#1. 环境搭建)
- [2. 编译rust内核](#2. 编译rust内核)
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- [2.1 下载源代码](#2.1 下载源代码)
- [2.2 安装rust支持](#2.2 安装rust支持)
- [2.3 检查linux内核是否支持rust](#2.3 检查linux内核是否支持rust)
- [2.4 编译linux内核](#2.4 编译linux内核)
- [3. aarch64的qemu环境](#3. aarch64的qemu环境)
- [4. 准备debian文件系统](#4. 准备debian文件系统)
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- [4.1 下载文件系统](#4.1 下载文件系统)
- [4.2 解压缩](#4.2 解压缩)
- [4.3 测试下载的内核和文件系统](#4.3 测试下载的内核和文件系统)
- [5. 运行自己编译的内核](#5. 运行自己编译的内核)
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- [5.1 拷贝自己编译的内核](#5.1 拷贝自己编译的内核)
- [5.2 运行自己编译的内核](#5.2 运行自己编译的内核)
- [6. rust模块](#6. rust模块)
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- [6.1 编译linux中的rust用例](#6.1 编译linux中的rust用例)
- [6.2 自己编写一个rust的helloworld驱动](#6.2 自己编写一个rust的helloworld驱动)
[清华开源操作系统训练营]《Rust fox Linux》课程的练习1-2完整版记录。
1. 环境搭建
我们基于Ubuntu22.04进行环境搭建，需要安装编译内核的包和LLVM等包：
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sudo apt-get -y install binutils build-essential libtool texinfo gzip zip unzip patchutils curl git make cmake ninja-build automake bison flex gperf grep sed gawk bc zlib1g-dev libexpat1-dev libmpc-dev libglib2.0-dev libfdt-dev libpixman-1-dev libelf-dev libssl-dev clang-format clang-tidy clang-tools clang clangd libc++-dev libc++1 libc++abi-dev libc++abi1 libclang-dev libclang1 liblldb-dev libllvm-ocaml-dev libomp-dev libomp5 lld lldb llvm-dev llvm-runtime llvm python3-clang llvm2. 编译rust内核
2.1 下载源代码
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git clone https://github.com/Rust-for-Linux/linux -b rust-dev我们使用Rust-for-Linux的rust-dev分支进行学习。
2.2 安装rust支持
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cd linux-rust
rustup override set $(scripts/min-tool-version.sh rustc)
rustup component add rust-src
cargo install --locked --version $(scripts/min-tool-version.sh bindgen) bindgen-cli2.3 检查linux内核是否支持rust
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jian@jian:~/share/linux-rust$ make LLVM=1 rustavailable
Rust is available!2.4 编译linux内核
首先生成配置文件.config
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make ARCH=arm64 LLVM=1 O=build defconfig然后修改配置文件，把CONFIG_RUST设置为y
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make ARCH=arm64 LLVM=1 O=build menuconfig最后编译内核
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cd build && make ARCH=arm64 LLVM=1 -j83. aarch64的qemu环境
3.1.下载源代码
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https://download.qemu.org/qemu-7.0.0.tar.xz3.2. 解压编译安装
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tar -xf qemu-7.0.0.tar.xz
cd qemu-7.0.0
mkdir build-aarch64 && cd build-aarch64
../configure --target-list=aarch64-softmmu,aarch64-linux-user
make -j $(nproc)3.3. 配置环境变量
在~/.bashrc文件中添加下面语句：
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export PATH=$PATH:/home/jian/share/qemu/qemu-7.0.0/build-aarch64
export PATH=$PATH:/home/jian/share/qemu/qemu-7.0.0/build-aarch64/aarch64-softmmu
export PATH=$PATH:/home/jian/share/qemu/qemu-7.0.0/build-aarch64/aarch64-linux-user3.4.验证
新开一个控制台输入下面：
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jian@jian:~/share/qemu/qemu-7.0.0$ qemu-system-aarch64 --version
QEMU emulator version 7.0.0
Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers
jian@jian:~/share/qemu/qemu-7.0.0$ qemu-aarch64 --version
qemu-aarch64 version 7.0.0
Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers
jian@jian:~/share/qemu/qemu-7.0.0$ 4. 准备debian文件系统
4.1 下载文件系统
去Debian官方网站上下载 Images for arm64-virt 版本的压缩包：
https://people.debian.org/\~gio/dqib/
4.2 解压缩
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unzip arm64-virt.zip解压缩后可以看到下面的内容：
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jian@jian:~/share/arm64-virt$ tree
.
├── arm64-virt.zip
└── dqib_arm64-virt
├── Image
├── image.qcow2
├── initrd
├── kernel
├── mymake
├── readme.txt
├── ssh_user_ecdsa_key
├── ssh_user_ed25519_key
└── ssh_user_rsa_key
1 directory, 10 files4.3 测试下载的内核和文件系统
执行下面的命令可以尝试把整个的debian文件系统跑起来：
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qemu-system-aarch64 -machine 'virt' -cpu 'cortex-a57' -m 1G -device virtio-blk-device,drive=hd -drive file=image.qcow2,if=none,id=hd -device virtio-net-device,netdev=net -netdev user,id=net,hostfwd=tcp::2222-:22 -kernel kernel -initrd initrd -nographic -append "root=LABEL=rootfs console=ttyAMA0"5. 运行自己编译的内核
5.1 拷贝自己编译的内核
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cp ~/share/linux-rust/build/arch/arm64/boot/Image /home/jian/share/arm64-virt/dqib_arm64-virt5.2 运行自己编译的内核
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qemu-system-aarch64 -machine 'virt' -cpu 'cortex-a57' -m 1G -device virtio-blk-device,drive=hd -drive file=image.qcow2,if=none,id=hd -device virtio-net-device,netdev=net -netdev user,id=net,hostfwd=tcp::2222-:22 -kernel Image -initrd initrd -nographic -append "root=LABEL=rootfs console=ttyAMA0"6. rust模块
6.1 编译linux中的rust用例
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make ARCH=arm64 LLVM=1 O=build menuconfig
cd build && make ARCH=arm64 LLVM=1 -j8把CONFIG_SAMPLE_RUST_PRINT和CONFIG_SAMPLE_RUST_MINIMAL选上。然后在编译。
可以看到下面的输出：
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[ 2.836088] rust_minimal: Rust minimal sample (init)
[ 2.836386] rust_minimal: Am I built-in? true
[ 2.837094] rust_print: Rust printing macros sample (init)
[ 2.837225] rust_print: Emergency message (level 0) without args
[ 2.837379] rust_print: Alert message (level 1) without args
[ 2.837610] rust_print: Critical message (level 2) without args
[ 2.837805] rust_print: Error message (level 3) without args
[ 2.838325] rust_print: Warning message (level 4) without args
[ 2.838456] rust_print: Notice message (level 5) without args
[ 2.838579] rust_print: Info message (level 6) without args
[ 2.838712] rust_print: A line that is continued without args
[ 2.839166] rust_print: Emergency message (level 0) with args
[ 2.839481] rust_print: Alert message (level 1) with args
[ 2.839803] rust_print: Critical message (level 2) with args
[ 2.840127] rust_print: Error message (level 3) with args
[ 2.840456] rust_print: Warning message (level 4) with args
[ 2.840587] rust_print: Notice message (level 5) with args
[ 2.841027] rust_print: Info message (level 6) with args
[ 2.841338] rust_print: A line that is continued with args
[ 2.841794] rust_print: 1
[ 2.842115] rust_print: "hello, world"
[ 2.842667] rust_print: [../samples/rust/rust_print.rs:34] c = "hello, world"6.2 自己编写一个rust的helloworld驱动
线进入samples/rust目录，编写一个rust的驱动rust_hello.rs：
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// SPDX-License-Identifier: GPL-2.0
//! Rust minimal sample.
use kernel::prelude::*;
module! {
type: RustHelloWorld,
name: "rust_helloworld",
author: "whocare",
description: "hello world module in rust",
license: "GPL",
}
struct RustHelloWorld {}
impl kernel::Module for RustHelloWorld {
//fn init(_name: &'static CStr, _module: &'static ThisModule) -> Result<Self> {
fn init(_module: &'static ThisModule) -> Result<Self> {
pr_info!("Hello World from Rust module");
Ok(RustHelloWorld {})
}
}然后在Makefile文件中添加：
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obj-y += rust_hello.o最后再次编译和运行，可以看到下面的输出：
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[ 2.843635] rust_helloworld: Hello World from Rust module