On Wed, Sep 28, 2011 at 07:30, Venkatram Tummala <venkatram867@xxxxxxxxx> wrote: > On Tue, Sep 27, 2011 at 5:22 PM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> > wrote: >> >> Hi :) >> >> On Wed, Sep 28, 2011 at 06:56, Venkatram Tummala <venkatram867@xxxxxxxxx> >> 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? > > 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. Sorry, I mean something that traps everytime that file is opened and increase a count. Thinking a while, inotify might do the job perfectly IMHO.... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
