Re: Synchronous signal delivery..

Abramo Bagnara
2003-02-14T08:45:51Z

Linus Torvalds wrote:
>
> On Thu, 13 Feb 2003, Davide Libenzi wrote:
> >
> > It does not have necessarily to be just another ioctl/fcntl, it can be a
> > write. About security, chages might be allowed only to the task that
> > created the fd, if you're concerned. It's not that someone will starve
> > w/out such functionality though.
>
> I'd actually like to reserve writes to _sending_ signals. Especially if
> you have another process that listens in on the signals you get, it might
> want to also force the signals through.

This reminds me the unfortunate (and much needed) lack of an unified way
to send/receive out-of-band data to/from a regular fd.

Something like:
oob = fd_open(fd, channel, flags);
write(oob, ...)
read(oob, ....)
close(oob);

Don't you think it's time to introduce it and to start to avoid the
proliferation of different tricky ways to do the same things?

--
Abramo Bagnara mailto:abramo.bagnara@libero.it

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