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SubjectRe: Should O_NONBLOCK be copied from listening socket to accepting socket?

On Mon, 4 Sep 2000, Alan Cox wrote:

> > Is it required that the O_NONBLOCK flag be copied from a listening
> > socket to an accepted socket? Dan Bernstein believes this is a bug.
> My posix 1003.1g draft leaves it undefined. It is possible that
> SuS clarifies this. Unless he can cite a SuS version that has clarified this
> I believe its like the SIGIO case - inheritance is platform specific.

Well, in our own manpages

man 7 socket

It is possible to do non-blocking IO on sockets by setting
the O_NONBLOCK flag on a socket file descriptor using
fcntl(2). O_NONBLOCK is inherited through an accept.


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