Re: How does the size field work in IOCTL numbers?

From: Peter Zijlstra
Date: Sat Sep 03 2016 - 08:35:53 EST

Next message: SF Markus Elfring: "[PATCH 16/17] s390/debug: Improve determination of sizes in debug_info_alloc()"
Previous message: Dmitry Vyukov: "sound: divide by 0 in snd_hrtimer_callback (or hang)"
In reply to: Keno Fischer: "How does the size field work in IOCTL numbers?"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On Fri, Sep 02, 2016 at 07:27:27PM -0400, Keno Fischer wrote:
> I don't understand what the rule is for what to put in that third
> argument, or is it ioctl specific? Please let me know if I missed
> something.

You can do whatever you like, but everything that is different between
ILP32 and LP64 requires COMPAT fixups.

Next message: SF Markus Elfring: "[PATCH 16/17] s390/debug: Improve determination of sizes in debug_info_alloc()"
Previous message: Dmitry Vyukov: "sound: divide by 0 in snd_hrtimer_callback (or hang)"
In reply to: Keno Fischer: "How does the size field work in IOCTL numbers?"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]