svn commit: r255980 - head/lib/libc/sys

[Jilles Tjoelker]

Author: jilles
Date: Tue Oct  1 21:17:18 2013
New Revision: 255980
URL: http://svnweb.freebsd.org/changeset/base/255980

Log:
  accept(2): Update portability note for accept4().
  
  The accept(2) man page warns that O_NONBLOCK and other properties on the
  new socket may vary across implementations. However, this issue only
  applies to accept() and not to accept4(). On the other hand, accept4()
  is not commonly available yet.
  
  Reported by:	pluknet
  Reviewed by:	bjk
  Approved by:	re (kib)

Modified:
  head/lib/libc/sys/accept.2

Modified: head/lib/libc/sys/accept.2
==============================================================================
--- head/lib/libc/sys/accept.2	Tue Oct  1 20:18:33 2013	(r255979)
+++ head/lib/libc/sys/accept.2	Tue Oct  1 21:17:18 2013	(r255980)
@@ -28,7 +28,7 @@
 .\"     @(#)accept.2	8.2 (Berkeley) 12/11/93
 .\" $FreeBSD$
 .\"
-.Dd May 1, 2013
+.Dd October 1, 2013
 .Dt ACCEPT 2
 .Os
 .Sh NAME
@@ -155,13 +155,20 @@ For some applications, performance may b
 .Xr accept_filter 9
 to pre-process incoming connections.
 .Pp
-Portable programs should not rely on the
+When using
+.Fn accept ,
+portable programs should not rely on the
 .Dv O_NONBLOCK
 and
 .Dv O_ASYNC
 properties and the signal destination being inherited,
 but should set them explicitly using
-.Xr fcntl 2 .
+.Xr fcntl 2 ;
+.Fn accept4
+sets these properties consistently,
+but may not be fully portable across
+.Ux
+platforms.
 .Sh RETURN VALUES
 These calls return \-1 on error.
 If they succeed, they return a non-negative