diff options
| author |   millert <millert@openbsd.org> | 2015-03-02 21:17:00 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 2015-03-02 21:17:00 +0000 |
| commit | 92bf4310373b9ce45e30628fb82da7ca824829b1 (patch) | |
| tree | 458bc087b02d4eb1c4b91ca47273f973aeba0f65 /lib/libc | |
| parent | Document out-of-band data on a socket as an example of an exceptional (diff) | |
| download | wireguard-openbsd-92bf4310373b9ce45e30628fb82da7ca824829b1.tar.xz wireguard-openbsd-92bf4310373b9ce45e30628fb82da7ca824829b1.zip | |
Document that POLLPRI and POLLRDBAND are set for out-of-band socket
data.
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/sys/poll.2 | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/lib/libc/sys/poll.2 b/lib/libc/sys/poll.2 index 8474abb66cb..3281653563b 100644 --- a/lib/libc/sys/poll.2 +++ b/lib/libc/sys/poll.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: poll.2,v 1.29 2015/02/05 02:33:09 schwarze Exp $ +.\" $OpenBSD: poll.2,v 1.30 2015/03/02 21:17:00 millert Exp $ .\" .\" Copyright (c) 1994 Jason R. Thorpe .\" All rights reserved. @@ -28,7 +28,7 @@ .\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" -.Dd $Mdocdate: February 5 2015 $ +.Dd $Mdocdate: March 2 2015 $ .Dt POLL 2 .Os .Sh NAME @@ -174,6 +174,14 @@ member. .Pp The significance and semantics of normal, priority, and high-priority data are device-specific. +For example, on +.Ox , +the +.Dv POLLPRI +and +.Dv POLLRDBAND +flags may be used to detect when out-of-band socket data may be read +without blocking. .Pp In addition to I/O multiplexing, .Fn poll @@ -354,6 +362,11 @@ As a result, the and .Dv POLLRDNORM flags are equivalent. +Similarly, the +.Dv POLLPRI +and +.Dv POLLRDBAND +flags are also equivalent. .Pp Internally to the kernel, .Fn poll |