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    SubjectRe: [RFC] ioctl(2) return value
    On Thu, Sep 21, 2000 at 11:43:07AM +0200, Abramo Bagnara wrote:

    > 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).

    The current manpage says:

    RETURN VALUE
    On success, zero is returned. On error, -1 is returned,
    and errno is set appropriately.

    Adding: "except on ALSA where certain other return values are used"
    would be really ugly.

    But you are right, Sun uses other return values with STREAMS ioctls.

    Andries
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