如何为内核文件系统和用户程序创建共享头文件？

Question

我应该在哪条路径中包含Linux内核自定义文件系统和用户程序都需要访问的头文件？

Answer 1

Existed filesystem drivers place their headers, which are also intended for user space, under include/uapi/linux/ . Here you may find jffs2.h , btrfs.h and many other filesystems-related headers.

These headers are intended to be included with

#include <linux/xxx.h>

This automatically works for the kernel.

For user this would work too, after you install "uapi" headers with make headers_install , rebuild C library ( libc ) against new headers, and rebuild gcc against new C library. Otherwise, you need to copy required headers and adjust include directories manually.