diff options
| author | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2015-09-04 19:12:32 +0000 |
|---|---|---|
| committer | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2015-09-04 19:12:32 +0000 |
| commit | dcf9890275fe66ff30ce7fe0f862b2ac6c8099b3 (patch) | |
| tree | 47cdc676eadb9900c3dc27a98345dc8de715051d | |
| parent | 6644c2c01dd5650a351c0a24b2ebf684e23d9a9d (diff) | |
Add missing information to the socket splicing man page to make it
more comprehensible.
OK jmc@ tedu@
| -rw-r--r-- | lib/libc/sys/getsockopt.2 | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/libc/sys/getsockopt.2 b/lib/libc/sys/getsockopt.2 index 6d157d11ba1..d7582e60b1e 100644 --- a/lib/libc/sys/getsockopt.2 +++ b/lib/libc/sys/getsockopt.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: getsockopt.2,v 1.48 2014/12/16 00:06:49 schwarze Exp $ +.\" $OpenBSD: getsockopt.2,v 1.49 2015/09/04 19:12:31 bluhm Exp $ .\" $NetBSD: getsockopt.2,v 1.7 1995/02/27 12:33:29 cgd Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)getsockopt.2 8.3 (Berkeley) 4/19/94 .\" -.Dd $Mdocdate: December 16 2014 $ +.Dd $Mdocdate: September 4 2015 $ .Dt GETSOCKOPT 2 .Os .Sh NAME @@ -368,7 +368,9 @@ previously selected using .Xr setrtable 2 . .Pp .Dv SO_SPLICE -can splice together two TCP or UDP sockets for zero-copy data transfers. +can splice together two TCP or UDP sockets for unidirectional +zero-copy data transfers. +Splice also the other way around to get bidirectional data flow. Both sockets must be of the same type. In the first form, .Fn setsockopt @@ -403,6 +405,7 @@ or .Xr kqueue 2 operation testing the ability to read from the source socket indicates that the splicing has terminated. +When one of the sockets gets closed, splicing ends. The error status can be examined with .Dv SO_ERROR at the source socket. |