Re: Question: Why is there no notification when a file is opened using filp_open()?

From: Amir Goldstein
Date: Tue Sep 08 2020 - 06:07:10 EST

On Tue, Sep 8, 2020 at 11:02 AM Xiaoming Ni <nixiaoming@xxxxxxxxxx> wrote:
> The file opening action on the system may be from user-mode sys_open()
> or kernel-mode filp_open().
> Currently, fsnotify_open() is invoked in do_sys_openat2().
> But filp_open() is not notified. Why? Is this an omission?
> Do we need to call fsnotify_open() in filp_open() or do_filp_open() to
> ensure that both user-mode and kernel-mode file opening operations can
> be notified?

Do you have a specific use case of kernel filp_open() in mind?