[src/trunk]: src/lib/libc/net Clarify that sdl->sdl_len must be initialized b...

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

details:   https://anonhg.NetBSD.org/src/rev/d89463394ae2
branches:  trunk
changeset: 474005:d89463394ae2
user:      sommerfeld <sommerfeld%NetBSD.org@localhost>
date:      Fri Jun 25 16:13:21 1999 +0000

description:
Clarify that sdl->sdl_len must be initialized before call to link_addr()

diffstat:

 lib/libc/net/linkaddr.3 |  9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diffs (23 lines):

diff -r 78ce892a46e0 -r d89463394ae2 lib/libc/net/linkaddr.3
--- a/lib/libc/net/linkaddr.3   Fri Jun 25 15:11:02 1999 +0000
+++ b/lib/libc/net/linkaddr.3   Fri Jun 25 16:13:21 1999 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: linkaddr.3,v 1.5 1999/03/22 19:44:52 garbled Exp $
+.\"    $NetBSD: linkaddr.3,v 1.6 1999/06/25 16:13:21 sommerfeld Exp $
 .\"
 .\" Copyright (c) 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -66,6 +66,13 @@
 link level address itself, and the interface name or number, if present.
 This facility is experimental and is still subject to change.
 .Pp
+Prior to a call to 
+.Fn link_addr ,
+.Fa sdl->sdl_len 
+must be initialized to the size of the link-level socket structure,
+typically 
+.Fa sizeof(struct sockaddr_dl) .
+.Pp
 For
 .Fn link_addr ,
 the string