linux-kernel - Re: [RFC] PPS: Implementing LinuxPPS API with new syscalls

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Message-ID: <20070607101359.GB15632@enneenne.com>
Date:	Thu, 7 Jun 2007 12:14:00 +0200
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linuxpps@...enneenne.com
Subject: Re: [RFC] PPS: Implementing LinuxPPS API with new syscalls

On Wed, Jun 06, 2007 at 11:24:16PM +0200, Rodolfo Giometti wrote:
> On Wed, Jun 06, 2007 at 01:29:34PM -0700, Andrew Morton wrote:
> 
> > >    asmlinkage long sys_time_pps_find(int cmd, int __user *source,
> > >                                           char __user *name, int namelen,
> > >                                           char __user *path, int pathlen);
> 
> Try to find a PPS source into the system giving one of its feature.
> 
> With cmd==PPS_FIND_SRC we check for a PPS source with index number
> equal to *source, if *source==-1 we just ask for the first PPS source
> defined into the system.
> 
> With cmd=PPS_FIND_PATH we check for a PPS source with path name equal
> to path.
> 
> Selected source is returned into *source and PPS source info are
> placed into path and name arrays.

Maybe this syscall can be turned into something like:

   asmlinkage long sys_time_pps_ioctl(int cmd, void *ptr);

and data are passed through ptr pointer... obviously first implemented
commands will be PPS_FIND_SRC and PPS_FIND_PATH.

This allows future improvements...

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti@...eenne.com
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Embedded Systems                     		giometti@...ux.it
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