Alan Coopersmith wrote:
> Garrett D'Amore wrote:
>
>> The fix for 6711665 I'm not sure about. One approach is to provide a
>> compatibility macro (e.g. #define IOCCOMPATSZ(x) (sizeof (x) & 0xff))
>> and use it to define the known bad ioctls. The problem is that this
>> fixes the ioctls that are defined in ON, it doesn't help ioctls using
>> these macros and defined elsewhere. (Note that nobody should be using
>> these macros! They aren't part of any public API, and the header
>> explicitly states that only sizes up to 255 bytes can be encoded. I
>> didn't expect anyone to violate those comments, which is what caught me
>> off guard.)
>>
>
> http://docs.sun.com/app/docs/doc/805-3024/6j2sumi4j?l=en&a=view#conv-41
> suggests they were public interface in SunOS 4.x and remain for
> compatibility.
>
> Unfortunately, a search of the ARC case archives shows much newer
> ioctls being defined using them, and I don't see a mention of
> public or private in the PSARC 1997/243 case that added _IOWRN to
> the set.
>
>
This has got to be *ancient* legacy. SunOS 4.x kernel source
compatibility hacks were abandoned long ago.
I'm not worried about breaking 3rd party drivers ported from 4.x. :-)
-- Garrett
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