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    Subject[RFC] ioctl(2) return value

    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

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

    ALSA project is
    sponsored by SuSE Linux

    It sounds good!
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      Last update: 2005-03-22 12:39    [W:0.029 / U:4.260 seconds]
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