On Tue, Sep 27, 2011 at 5:22 PM, Mulyadi Santosa
[off-list ref]wrote:

Hi :)

On Wed, Sep 28, 2011 at 06:56, Venkatram Tummala [off-list ref]
wrote:

quoted

Hi All,
I have a simple device driver which creates a /dev/XYZ file. I need to
prevent a process from opening the file more than once. However, multiple
processes can open the file simultaneously. Is there any any elegant way

to

quoted

do this other than checking all opened files in the process ?

Uhm, keep a reference count and increment it on every file open in
your module? How does that sound?

Well, which refcount should i use? I can't use the refcount in the file
object as the file objects passed to me are different each time the file is
opened in the process.

--
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com

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