Re: [2.6 patch] ISDN_CAPI_CAPIFS related cleanups

[Marcel Holtmann <marcel@holtmann.org>]

Hi Armin,

> > > > > This patch contains the following cleanups:
> > > > > - move the help text to the right option
> > > > > - replace some #ifdef's in capi.c with dummy functions in capifs.h
> > > > > - use CONFIG_ISDN_CAPI_CAPIFS_BOOL in one place in capi.c
> > > > 
> > > > I actually still like to see capifs removed completely. It is not really
> > > > needed if you gonna use udev. The only thing that it is doing, is to set
> > > > the correct permissions and make sure that the device nodes are created.
> > > > And with a 2.6 kernel this can be all done by udev.
> > > 
> > > udev is not mandatory.
> > > 
> > > Static /dev is still 100% supported and working fine.
> > 
> > and if you have static /dev then you can use mknod and chown by
> > yourself. If you use CAPI on any newer distribution with the latest 2.6
> > kernel you will have udev anyway and so no static /dev at all.
> 
> Sorry for my ignorance, but I think capifs was introduced to have own 
> dynamic 'files' like pts and not to have the restrictions of character 
> devices and the needed major/minor numbers.

I am under the impression that it was introduced to change the ownership
of the device node the current process. Nothing more, nothing less.
Please correct me if I am wrong here.
 
> So changing this to character device nodes may break applications
> out there.

Actually I stopped compiling in and using capifs over a year ago and I
never had any problems with it. However you must ensure that the device
has been created by udev, nut nowadays this is no problem.

Regards

Marcel