Messages in this thread | | | Date | Thu, 21 Sep 2000 13:33:14 +0200 | From | Andries Brouwer <> | Subject | Re: [RFC] ioctl(2) return value |
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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.
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