实现uname系统调用

[sspphh]

Type

Bug fix, Enhancement

---

Description

此拉取请求实现并注册了一个新的uname系统调用，该调用用于获取系统的名称和版本信息。
同时，添加了一个测试程序来验证系统调用的功能。

---

Changes walkthrough

Relevant files

Enhancement

syscall.rs 实现uname系统调用                                                                                                            kernel/src/process/syscall.rs ['新增了uname系统调用的实现。'] +49/-0    mod.rs 注册uname系统调用                                                                                                            kernel/src/syscall/mod.rs ['注册了uname系统调用。'] +6/-2      syscall_num.h 新增系统调用常量                                                                                                                  kernel/src/syscall/syscall_num.h ['新增了SYS_UNAME常量。'] +1/-0      main.c 实现uname函数调用                                                                                                            user/apps/test_uname/main.c ['实现了uname函数的调用，用于获取系统信息并打印。'] +19/-0    Makefile 添加交叉编译指令                                                                                                                  user/apps/test_uname/Makefile ['添加了针对不同架构的交叉编译指令。'] +20/-0    test_uname_0_1_0.dadk 新增配置文件                                                                                                                      user/dadk/config/test_uname_0_1_0.dadk ['新增了一个测试uname程序的配置文件。'] +22/-0

---

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[dragonos-community-ai-pr-reviewer]

PR Description updated to latest commit (fdacb1e)

[dragonos-community-ai-pr-reviewer]

PR Analysis

• 🎯 Main theme: 此拉取请求实现并注册了一个新的uname系统调用，该调用用于获取系统的名称和版本信息，同时添加了一个测试程序来验证系统调用的功能。
• 📝 PR summary: 此PR实现了一个新的uname系统调用，该调用返回系统的名称和版本信息，并通过添加一个测试程序来验证其功能。
• 📌 Type of PR: Enhancement
• 🧪 Relevant tests added: True
• ⏱️ Estimated effort to review [1-5]: 3, because the PR includes implementation of a new syscall and associated test code, which requires careful review to ensure correctness and adherence to best practices.
• 🔒 Security concerns: No, there are no apparent security concerns with the implementation of the uname system call as described.

PR Feedback

• 💡 General suggestions:

  • Ensure that the uname system call follows the Linux syscall convention and that it is consistent across different architectures.
  • Add documentation to the kernel code comments explaining the purpose and usage of the new uname system call.
  • Consider adding more comprehensive tests to cover edge cases and potential security concerns.

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[dragonos-community-ai-pr-reviewer]

PR Code Suggestions

	Suggestions
memory alignment	调整PosixOldUtsName结构体的内存对齐。                                       确保PosixOldUtsName结构体的内存对齐正确。 kernel/src/process/syscall.rs [29-34] #[repr(C)] #[derive(Debug, Clone, Copy)] pub struct PosixOldUtsName { - ... + pub sysname: [u8; 65], + pub nodename: [u8; 65], + pub release: [u8; 65], + pub version: [u8; 65], + pub machine: [u8; 65], }
error handling	为uname系统调用添加错误处理。                                                添加对uname系统调用的错误处理。 kernel/src/syscall/mod.rs [1032-1037] -Self::uname(name) +match Self::uname(name) { + Ok(0) => {}, + Err(e) => return Err(e), +}
use libc function	使用libc中的uname函数。                                    使用libc中的uname函数，而不是直接调用系统调用。 user/apps/test_uname/main.c [9] -uname(&system_info); +if (libc_uname(&system_info) == 0) { + ... +} else { + ... +}

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[fslongjin]

请运行make fmt进行格式化之后再提交一次，然后push上来哈

[fslongjin]

@dragonosbot label +S-等待作者修改 -S-等待审查

[fslongjin]

#559

[fslongjin]

@dragonosbot assign @Jomocool

[Jomocool]

这里改成DragonOS比较好

[Jomocool]

1. 用户程序名改成uname比较合适

2. uname后面应该可以添加一些选项来自定义输出，比如：

• -a 或--all 　显示全部的信息，包括内核名称、主机名、操作系统版本、处理器类型和硬件架构等。。
• -m 或--machine 　显示处理器类型。
• -n 或--nodename 　显示主机名。
• -r 或--release 　显示内核版本号。
• -s 或--sysname 　显示操作系统名称。
• -v 　显示操作系统的版本。
• --help 　显示帮助。
• --version 　显示版本信息。
• -p 显示处理器类型（与 -m 选项相同）。

3. 运行make fmt格式化代码后再提交

[fslongjin]

1. 用户程序名改成uname比较合适
2. uname后面应该可以添加一些选项来自定义输出，比如：

• -a 或--all 　显示全部的信息，包括内核名称、主机名、操作系统版本、处理器类型和硬件架构等。。
• -m 或--machine 　显示处理器类型。
• -n 或--nodename 　显示主机名。
• -r 或--release 　显示内核版本号。
• -s 或--sysname 　显示操作系统名称。
• -v 　显示操作系统的版本。
• --help 　显示帮助。
• --version 　显示版本信息。
• -p 显示处理器类型（与 -m 选项相同）。

3. 运行make fmt格式化代码后再提交

我待会编译一个coreutils到系统里面去。