CODEWITHSUNDEEP
linuxlinux-kernelfilesystemsheader-files
dracodormiens
dracodormiens

Reputation: 520

How to create shared header file for kernel filesystem and user program?

At what path should I include a header file that is needed to be accessed by both a linux kernel custom filesystem and a user program?

Upvotes: 0

Views: 278

Answers (1)

Tsyvarev
Tsyvarev

Reputation: 65928

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.

Upvotes: 2

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