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| author |   mpi <mpi@openbsd.org> | 2020-06-22 13:14:32 +0000 |
|---|---|---|
| committer | mpi <mpi@openbsd.org> | 2020-06-22 13:14:32 +0000 |
| commit | 7ab02df9ba969938f0d288bc81680642c429c9c4 (patch) | |
| tree | c8acd59001aa58d4ef33443e29ffa4622b51de89 /lib/libc | |
| parent | Change tsc_get_timecount return from uint to u_int per sys/timetc.h. (diff) | |
| download | wireguard-openbsd-7ab02df9ba969938f0d288bc81680642c429c9c4.tar.xz wireguard-openbsd-7ab02df9ba969938f0d288bc81680642c429c9c4.zip | |
Extend kqueue interface with EVFILT_EXCEPT filter.
This filter, already implemented in macOS and Dragonfly BSD, returns
exceptional conditions like the reception of out-of-band data.
The functionnality is similar to poll(2)'s POLLPRI & POLLRDBAND and
it can be used by the kqfilter-based poll & select implementation.
ok millert@ on a previous version, ok visa@
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/kqueue.2 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/libc/sys/kqueue.2 b/lib/libc/sys/kqueue.2 index fd5cc41c248..66c92b166c7 100644 --- a/lib/libc/sys/kqueue.2 +++ b/lib/libc/sys/kqueue.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: kqueue.2,v 1.40 2020/05/31 03:49:44 visa Exp $ +.\" $OpenBSD: kqueue.2,v 1.41 2020/06/22 13:14:32 mpi Exp $ .\" .\" Copyright (c) 2000 Jonathan Lemon .\" All rights reserved. @@ -26,7 +26,7 @@ .\" .\" $FreeBSD: src/lib/libc/sys/kqueue.2,v 1.18 2001/02/14 08:48:35 guido Exp $ .\" -.Dd $Mdocdate: May 31 2020 $ +.Dd $Mdocdate: June 22 2020 $ .Dt KQUEUE 2 .Os .Sh NAME @@ -310,6 +310,13 @@ enabled and there is any data to read; .Fa data contains the number of bytes available. .El +.It Dv EVFILT_EXCEPT +Takes a descriptor as the identifier, and returns whenever one of the +specified exceptional conditions has occured on the descriptor. +Conditions are specified in +.Fa fflags . +Currently, a filter can monitor the reception of out-of-band data with +.Dv NOTE_OOB . .It Dv EVFILT_WRITE Takes a descriptor as the identifier, and returns whenever it is possible to write to the descriptor. |