Re: Prevent a process from opening a file more than once

Hi :) On Wed, Sep 28, 2011 at 06:56, Venkatram Tummala <venkatram867@gmail.com> wrote:

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 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? -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com