Re: poll(): IN/OUT vs {RD,WR}NORM
David Holland <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Mon, May 27, 2024 at 11:02:06PM -0400, Mouse wrote:
> > I have no idea if any such device or file ever have had such a
> > distinction.
>
> Possibly nobody except System V (or possibly its direct ancestors) ever
> did. My impression is that it's a STREAMS thing, but that's a fuzzy
> impression, mostly coming from manpage notes ("The distinction between
> some of the fields in the events and revents bitmasks is really not
> useful without STREAMS.").
Yes, all this stuff is from STREAMS originally, that's why it's poorly
documented with vague semantics...
--
David A. Holland
[email protected]