[RFC] ioctl(2) return value

From: Abramo Bagnara (abramo@alsa-project.org)
Date: Thu Sep 21 2000 - 05:43:07 EDT

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    In ALSA we use the return value from ioctl as a simple way to return a
    positive number to user space (if the return value is less than 0 we got
    error, of course)

    We got the doubt that this break some unknown standards or some linux
    conventions or Linus taste (at a first glance I'm unable to find
    precedents inside kernel tree).

    I've looked Singe UNIX Specification, Version 2 and there this seems
    perfectly acceptable.

    I'd like very much to have some feedback to do the RightThing (tm).

    The alternative of course would be to add a result field inside struct
    passed by pointer to ioctl call. 

    -- 
Abramo Bagnara                       mailto:abramo@alsa-project.org

    Opera Unica
Via Emilia Interna, 140              Phone: +39.0546.656023
48014 Castel Bolognese (RA) - Italy  Fax:   +39.0546.656023

    ALSA project is            http://www.alsa-project.org
sponsored by SuSE Linux    http://www.suse.com

    It sounds good!
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