Re: may b a minor error
Re: may b a minor error
- Subject: Re: may b a minor error
- From: Andrew Gallatin <email@hidden>
- Date: Thu, 15 Jun 2006 09:12:27 -0400 (EDT)
sugumaran narayanan writes:
> Hi
> I am quite new to the Mac world...I am trying to
> write(using xcode on tiger) a simple character
> driver(openbsd.org example) and am facing few
> problems...
>
> During compile, struct uio is not recognized and I
> get a dereferencing pointer to incomplete type
> error...can somebody help...maybe I am not including
> the correct libraries...
<....>
MacOSX does not allow access to core kernel structures like
uio on the theory that Apple may want to change them some day,
and does not want to break binary drivers when the structure
changes. This is generally called the "KPI".
> amt = MIN(uio->uio_resid, (echomsg->len -
> uio->uio_offset > 0) ?
For example, in the above code you want to use uio_resid(uio) and
uio_offset(uio).
Drew
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