Date: Fri, 29 May 2009 07:55:44 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r193024 - head/lib/libc/net Message-ID: <200905290755.n4T7tiSY064047@svn.freebsd.org>
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Author: delphij Date: Fri May 29 07:55:44 2009 New Revision: 193024 URL: http://svn.freebsd.org/changeset/base/193024 Log: Document how to enable strict RFC 1034 enforcements. PR: kern/129477 Modified: head/lib/libc/net/resolver.3 Modified: head/lib/libc/net/resolver.3 ============================================================================== --- head/lib/libc/net/resolver.3 Fri May 29 07:34:54 2009 (r193023) +++ head/lib/libc/net/resolver.3 Fri May 29 07:55:44 2009 (r193024) @@ -28,7 +28,7 @@ .\" @(#)resolver.3 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd November 4, 2006 +.Dd May 29, 2009 .Dt RESOLVER 3 .Os .Sh NAME @@ -401,6 +401,19 @@ function properly if the programmer atte .Va _res structure in an attempt to replace the per-thread version referred to by that macro. +.Pp +The following compile-time option can be specified to change the default +behavior of resolver routines when necessary. +.Bl -tag -width RES_ENFORCE_RFC1034 +.It Dv RES_ENFORCE_RFC1034 +If this symbol is defined during compile-time, +.Fn res_search +will enforce RFC 1034 check, namely, disallow using of underscore character +within host names. +This is used by the standard host lookup routines like +.Xr gethostbyname 3 . +For compatibility reasons this option is not enabled by default. +.El .Sh RETURN VALUES The .Fn res_init
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