Re: [patch rfc] towards supporting O_NONBLOCK on regular files

[Dan Kegel]

Marcelo wrote:
> Curiosity: Is this defined in any UNIX standard?

No.  See
http://www.opengroup.org/onlinepubs/009695399/functions/open.html
which leaves it undefined.

http://www.pasc.org/interps/unofficial/db/p1003.1/pasc-1003.1-71.html
says implementations have to allow setting O_NONBLOCK even if they
ignore it.

http://www.ussg.iu.edu/hypermail/linux/kernel/9911.3/0530.html
claims other Unixes and NT implement it.

There's a thread that discusses this in a bit of detail, and
suggests that older Solaris might implement it:
http://lists.freebsd.org/pipermail/freebsd-arch/2003-April/000132.html
http://lists.freebsd.org/pipermail/freebsd-arch/2003-April/000134.html

Googling for O_NONBLOCK disk seems to be good.  I'd google more
but my baby is calling :-)
- Dan
--
My technical stuff: http://kegel.com
My politics: see http://www.misleader.org for examples of why I'm for regime change
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