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Add a note that POLLIN event is returned rather than POLLHUP when 

remote end of a socket is closed.
Adresses kern/5486 by Ignatios Souvatzis.
This commit is contained in:
jdolecek 2002-01-03 22:18:09 +00:00
parent ac054a2787
commit b3b35b86aa
1 changed files with 7 additions and 2 deletions
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9
lib/libc/sys/poll.2
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@ -1,4 +1,4 @@
.\" $NetBSD: poll.2,v 1.11 2001/11/14 18:48:11 christos Exp $
.\" $NetBSD: poll.2,v 1.12 2002/01/03 22:18:09 jdolecek Exp $
.\"
.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -118,7 +118,12 @@ and
POLLOUT
should never be present in the
.Fa revents
bitmask at the same time.
bitmask at the same time. If the remote end of a socket is closed,
.Fn poll
returns
POLLIN
event, rather than
POLLHUP.
.It POLLNVAL
The file descriptor is not open. This flag is always checked, even
if not present in the