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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sun, 11 Mar 2012 00:51:16 +0000 (UTC)
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Subject: svn commit: r232806 - stable/9/lib/libc/sys
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Author: kib
Date: Sun Mar 11 00:51:16 2012
New Revision: 232806
URL: http://svn.freebsd.org/changeset/base/232806

Log:
  MFC r232180:
  Document SO_PROTOCOL socket option.

Modified:
  stable/9/lib/libc/sys/getsockopt.2
Directory Properties:
  stable/9/lib/libc/   (props changed)
  stable/9/lib/libc/sys/   (props changed)

Modified: stable/9/lib/libc/sys/getsockopt.2
==============================================================================
--- stable/9/lib/libc/sys/getsockopt.2	Sun Mar 11 00:48:54 2012	(r232805)
+++ stable/9/lib/libc/sys/getsockopt.2	Sun Mar 11 00:51:16 2012	(r232806)
@@ -28,7 +28,7 @@
 .\"     @(#)getsockopt.2	8.4 (Berkeley) 5/2/95
 .\" $FreeBSD$
 .\"
-.Dd November 21, 2011
+.Dd February 26, 2012
 .Dt GETSOCKOPT 2
 .Os
 .Sh NAME
@@ -172,6 +172,8 @@ for the socket
 .It Dv SO_BINTIME Ta "enables reception of a timestamp with datagrams"
 .It Dv SO_ACCEPTCONN Ta "get listening status of the socket (get only)"
 .It Dv SO_TYPE Ta "get the type of the socket (get only)"
+.It Dv SO_PROTOCOL Ta "get the protocol number for the socket (get only)"
+.It Dv SO_PROTOTYPE Ta "SunOS alias for the Linux SO_PROTOCOL (get only)"
 .It Dv SO_ERROR Ta "get and clear error on the socket (get only)"
 .It Dv SO_SETFIB Ta "set the associated FIB (routing table) for the socket (set only)"
 .El
@@ -449,7 +451,10 @@ and for
 .Ed
 .Pp
 .Dv SO_ACCEPTCONN ,
-.Dv SO_TYPE
+.Dv SO_TYPE ,
+.Dv SO_PROTOCOL
+(and its alias
+.Dv SO_PROTOTYPE )
 and
 .Dv SO_ERROR
 are options used only with
@@ -463,6 +468,12 @@ system call was invoked on the socket.
 returns the type of the socket, such as
 .Dv SOCK_STREAM ;
 it is useful for servers that inherit sockets on startup.
+.Dv SO_PROTOCOL
+returns the protocol number for the socket, for
+.Dv AF_INET
+and
+.Dv AF_INET6
+address families.
 .Dv SO_ERROR
 returns any pending error on the socket and clears
 the error status.