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| author | delphij <delphij@FreeBSD.org> | 2009-05-29 07:55:44 +0000 |
|---|---|---|
| committer | delphij <delphij@FreeBSD.org> | 2009-05-29 07:55:44 +0000 |
| commit | fb4a68cc3a982243575f41ccff8d3d019133027b (patch) | |
| tree | 028c44531fafaf81c90fb547e25f8d4a129e80a9 /lib/libc/net/resolver.3 | |
| parent | dafeb495e62f85e08a23a9536ffd3edd8ac1104e (diff) | |
| download | FreeBSD-src-fb4a68cc3a982243575f41ccff8d3d019133027b.zip FreeBSD-src-fb4a68cc3a982243575f41ccff8d3d019133027b.tar.gz | |
Document how to enable strict RFC 1034 enforcements.
PR: kern/129477
Diffstat (limited to 'lib/libc/net/resolver.3')
| -rw-r--r-- | lib/libc/net/resolver.3 | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/libc/net/resolver.3 b/lib/libc/net/resolver.3 index e35a545..c1a37b3 100644 --- a/lib/libc/net/resolver.3 +++ b/lib/libc/net/resolver.3 @@ -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 attempts to declare his or her own .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 |
