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-rw-r--r--sbin/dhclient/clparse.c7
-rw-r--r--sbin/dhclient/conflex.c3
-rw-r--r--sbin/dhclient/dhclient.c8
-rw-r--r--sbin/dhclient/dhclient.conf.512
-rw-r--r--sbin/dhclient/dhcpd.h3
-rw-r--r--sbin/dhclient/dhctoken.h3
6 files changed, 29 insertions, 7 deletions
diff --git a/sbin/dhclient/clparse.c b/sbin/dhclient/clparse.c
index a55e24a79a5..5f361dce498 100644
--- a/sbin/dhclient/clparse.c
+++ b/sbin/dhclient/clparse.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clparse.c,v 1.38 2011/12/10 17:15:27 krw Exp $ */
+/* $OpenBSD: clparse.c,v 1.39 2012/08/22 00:14:42 tedu Exp $ */
/* Parser for dhclient config and lease files... */
@@ -170,6 +170,11 @@ parse_client_statement(FILE *cfile)
if (code != -1)
config->default_actions[code] = ACTION_SUPERSEDE;
return;
+ case TOK_IGNORE:
+ code = parse_option_decl(cfile, &config->defaults[0]);
+ if (code != -1)
+ config->default_actions[code] = ACTION_IGNORE;
+ return;
case TOK_APPEND:
code = parse_option_decl(cfile, &config->defaults[0]);
if (code != -1)
diff --git a/sbin/dhclient/conflex.c b/sbin/dhclient/conflex.c
index 2eed7ac9cb8..ec60dbb9516 100644
--- a/sbin/dhclient/conflex.c
+++ b/sbin/dhclient/conflex.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: conflex.c,v 1.14 2011/12/10 17:36:40 krw Exp $ */
+/* $OpenBSD: conflex.c,v 1.15 2012/08/22 00:14:42 tedu Exp $ */
/* Lexical scanner for dhclient config file... */
@@ -337,6 +337,7 @@ static const struct keywords {
{ "filename", TOK_FILENAME },
{ "fixed-address", TOK_FIXED_ADDR },
{ "hardware", TOK_HARDWARE },
+ { "ignore", TOK_IGNORE },
{ "initial-interval", TOK_INITIAL_INTERVAL },
{ "interface", TOK_INTERFACE },
{ "lease", TOK_LEASE },
diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 143a44db134..6afab56706d 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dhclient.c,v 1.150 2012/08/21 00:29:32 krw Exp $ */
+/* $OpenBSD: dhclient.c,v 1.151 2012/08/22 00:14:42 tedu Exp $ */
/*
* Copyright 2004 Henning Brauer <henning@openbsd.org>
@@ -1534,6 +1534,9 @@ priv_script_write_params(char *prefix, struct client_lease *lease)
if (config->defaults[i].len) {
if (lease->options[i].len) {
switch (config->default_actions[i]) {
+ case ACTION_IGNORE:
+ /* handled below */
+ break;
case ACTION_DEFAULT:
dp = lease->options[i].data;
len = lease->options[i].len;
@@ -1589,6 +1592,9 @@ supersede:
} else {
len = 0;
}
+ if (len && config->default_actions[i] == ACTION_IGNORE) {
+ len = 0;
+ }
if (len) {
char name[256];
diff --git a/sbin/dhclient/dhclient.conf.5 b/sbin/dhclient/dhclient.conf.5
index 637720e5be5..100894ace7e 100644
--- a/sbin/dhclient/dhclient.conf.5
+++ b/sbin/dhclient/dhclient.conf.5
@@ -1,4 +1,4 @@
-.\" $OpenBSD: dhclient.conf.5,v 1.21 2011/04/09 19:53:00 krw Exp $
+.\" $OpenBSD: dhclient.conf.5,v 1.22 2012/08/22 00:14:42 tedu Exp $
.\"
.\" Copyright (c) 1997 The Internet Software Consortium.
.\" All rights reserved.
@@ -36,7 +36,7 @@
.\" see ``http://www.isc.org/isc''. To learn more about Vixie
.\" Enterprises, see ``http://www.vix.com''.
.\"
-.Dd $Mdocdate: April 9 2011 $
+.Dd $Mdocdate: August 22 2012 $
.Dt DHCLIENT.CONF 5
.Os
.Sh NAME
@@ -244,6 +244,14 @@ in the
.Ic supersede
statement.
.It Xo
+.Ic ignore No { Op Ar option declaration
+.Oo , Ar ... option declaration Oc }
+.Xc
+If for some set of options the client should always ignore the
+value supplied by the server, these values can be defined in the
+.Ic ignore
+statement.
+.It Xo
.Ic prepend No { Op Ar option declaration
.Oo , Ar ... option declaration Oc }
.Xc
diff --git a/sbin/dhclient/dhcpd.h b/sbin/dhclient/dhcpd.h
index 3e314a771cd..a08fabad817 100644
--- a/sbin/dhclient/dhcpd.h
+++ b/sbin/dhclient/dhcpd.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: dhcpd.h,v 1.77 2012/08/18 00:23:30 krw Exp $ */
+/* $OpenBSD: dhcpd.h,v 1.78 2012/08/22 00:14:42 tedu Exp $ */
/*
* Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
@@ -130,6 +130,7 @@ struct client_config {
struct option_data defaults[256];
enum {
ACTION_DEFAULT,
+ ACTION_IGNORE,
ACTION_SUPERSEDE,
ACTION_PREPEND,
ACTION_APPEND
diff --git a/sbin/dhclient/dhctoken.h b/sbin/dhclient/dhctoken.h
index 868fb6a3132..4b27921ce35 100644
--- a/sbin/dhclient/dhctoken.h
+++ b/sbin/dhclient/dhctoken.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: dhctoken.h,v 1.5 2006/05/15 08:10:57 fkr Exp $ */
+/* $OpenBSD: dhctoken.h,v 1.6 2012/08/22 00:14:42 tedu Exp $ */
/* Tokens for config file lexer and parser. */
@@ -79,6 +79,7 @@
#define TOK_REJECT 292
#define TOK_FDDI 293
#define TOK_LINK_TIMEOUT 294
+#define TOK_IGNORE 295
#define is_identifier(x) ((x) >= TOK_FIRST_TOKEN && \
(x) != TOK_STRING && \