linux-kernel - Re: Getting debugfs mountpoint?

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Message-ID: <CA+cF-pv2gyn+LqUAwyiojmzC=6y+mjqf1KkaV_86jMZaJ0oJtQ@mail.gmail.com>
Date:	Fri, 14 Sep 2012 19:07:43 -0700
From:	Jacob Sowles <sowlesj@...il.com>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Getting debugfs mountpoint?

Multiple instances of my code can be run simultaneously, and all
instances use the same debugfs directory, so I need the path to the
debugfs root directory so that I can use filp_open to get the dentry
for that directory.

Jacob

On Fri, Sep 14, 2012 at 6:57 PM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Fri, Sep 14, 2012 at 06:49:01PM -0700, Jacob Sowles wrote:
>> Is there an easy way to get the path to where debugfs is mounted? I
>> found a function called debugfs_find_mountpoint(), which is exactly
>> what I want, but it’s not exported, so I can’t use it. The only
>> exported debugfs functions that I could find are the ones that create,
>> remove, etc.
>
> More to the point, it's a userland function.  Why would you want that
> kernel-side?
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