Re: poll() behaves differently in Linux 2.4.1 vs. Linux 2.2.14 (POLLHUP)

[David S. Miller]

Jeffrey Butler writes:
 >   I've noticed that poll() calls on IPv4 sockets do
 > not behave the same under linux 2.4 vs. linux 2.2.14. 
 > Linux 2.4 will return POLLHUP for a socket that is not
 > connected (and has never been connected) while Linux
 > 2.2 will not.
 >   The following example program demonstrates the
 > problem when it's run under linux 2.4:

True, this behavior was changed from 2.2.x.  We now match the behavior
of other svr4 systems, in particular Solaris.  This new behavior in
2.4.x will not change.

Later,
David S. Miller
[e-mail]