> Hello. Why do we have something like
>
> vlong Boffset(Biobufhdr *r);
>
> instead of
>
> vlong Boffset(Biobuf *r);

Because there is an anonymous Biobufhdr
in the Biobuf, so it doesn't matter. At one point,
it was possible to declare your own buffered
i/o by just embedding a Biobufhdr and filling
it in correctly.

> long Bgetrune(Biobuf *r);
>
> instead of
>
> Rune Bgetrune(Biobuf *r);

Because Bgetrune needs to be able to return -1 on EOF.

Russ

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On Nov 5, 2008, at 11:21 PM, Russ Cox wrote:

> At one point, it was possible to declare your own buffered
> i/o by just embedding a Biobufhdr and filling it in correctly.

Is that still possible/useful?

Thanks for the rest of the info.

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