[src/trunk]: src/lib/libc/sys Mention EWOULDBLOCK too since a lot of the sour...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9c8d6fa84a50
branches:  trunk
changeset: 337632:9c8d6fa84a50
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Apr 21 21:22:07 2015 +0000

description:
Mention EWOULDBLOCK too since a lot of the source code and documentation still
refers to it.

diffstat:

 lib/libc/sys/intro.2 |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (30 lines):

diff -r 02bc038b5cd4 -r 9c8d6fa84a50 lib/libc/sys/intro.2
--- a/lib/libc/sys/intro.2      Tue Apr 21 19:57:41 2015 +0000
+++ b/lib/libc/sys/intro.2      Tue Apr 21 21:22:07 2015 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: intro.2,v 1.55 2010/03/22 19:30:55 joerg Exp $
+.\"    $NetBSD: intro.2,v 1.56 2015/04/21 21:22:07 christos Exp $
 .\"
 .\" Copyright (c) 1980, 1983, 1986, 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)intro.2    8.5 (Berkeley) 2/27/95
 .\"
-.Dd July 23, 2009
+.Dd April 21, 2015
 .Dt INTRO 2
 .Os
 .Sh NAME
@@ -270,6 +270,11 @@
 .It Er 35 EAGAIN Em "Resource temporarily unavailable" .
 This is a temporary condition and later calls to the
 same routine may complete normally.
+In this implementation this is the same as
+.Er EWOULDBLOCK ,
+but
+.Er EAGAIN 
+is the preferred name.
 .It Er 36 EINPROGRESS Em "Operation now in progress" .
 An operation that takes a long time to complete (such as
 a