GNU/Linux - copy_{to,from}_user: 用户和内核空间的内存互拷贝

copy_{to,from}_user 函数是 Linux 内核编程的基本组成部分。它用于将数据从用户空间复制到内核空间。在编写内核模块或使用设备驱动程序时，安全地处理用户空间和内核空间之间的数据传输对防止安全漏洞和确保系统稳定至关重要。

The copy_{to,from}_user function is a fundamental part of Linux kernel programming. It is used to copy data from user space to kernel space. When writing kernel modules or working with device drivers, it's crucial to safely handle the data transfer between user space and kernel space to prevent security vulnerabilities and ensure system stability.

在内核编程中，正确使用 copy_{to,from}_user（复制_{to,from}_用户）对于维护系统稳定性和安全性至关重要。请始终遵循最佳实践并彻底测试您的代码。

Using copy_{to,from}_user correctly is critical in kernel programming to maintain system stability and security. Always follow best practices and thoroughly test your code.

这些函数是一系列 API 的一部分，旨在促进用户空间与内核空间之间安全可靠的数据传输。

These functions are part of a set of APIs designed to facilitate safe and secure data transfers betw