linux-kernel - Re: (un)mount ramfs from C code

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Message-ID: <20090922172819.GA27978@citd.de>
Date:	Tue, 22 Sep 2009 19:28:19 +0200
From:	Matthias Schniedermeyer <ms@...d.de>
To:	Brian McGrew <brian@...ionpro.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: (un)mount ramfs from C code

On 22.09.2009 09:04, Brian McGrew wrote:
> Good morning all!
> 
> So I'm using a ramfs for temporary files, thank you whoever designed that,
> it works great!
> 
> I can mkdir, mount, chmoud, readand write and then umount the thing from the
> command line just fine.
> 
> What I need now is some method from within my C/C++ code to determine if the
> ramfs is mounted, if not, then mount it so I can use it and unmount it when
> I'm done, without making a system call.
> 
> Can this be done?  Is there any access to mount/unmount from C/C++?

The "/bin/mountpoint"-util appears to stat the mountpoint and it's 
parent directory and compares if they have the same device-no (st_dev). 
If they are different, then something is mounted.






Bis denn

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