Replace the many occurances of '256' with a new #define

DHO_COUNT.

6 files changed, 32 insertions, 31 deletions

diff --git a/sbin/dhclient/clparse.c b/sbin/dhclient/clparse.c
index edf6637d0fe..431f0fa9455 100644
--- a/sbin/dhclient/clparse.c
+++ b/sbin/dhclient/clparse.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: clparse.c,v 1.115 2017/07/05 16:17:41 krw Exp $	*/
+/*	$OpenBSD: clparse.c,v 1.116 2017/07/07 16:58:45 krw Exp $	*/
 
 /* Parser for dhclient config and lease files. */
 
@@ -220,7 +220,7 @@ read_client_leases(char *name, struct client_lease_tq *tq)
 void
 parse_client_statement(FILE *cfile, char *name)
 {
-	u_int8_t	 optlist[256];
+	u_int8_t	 optlist[DHO_COUNT];
 	char		*string;
 	int		 code, count, token;
 
@@ -638,7 +638,7 @@ parse_option_decl(FILE *cfile, struct option_data *options)
 
 	/* Look up the actual option info. */
 	fmt = NULL;
-	for (code = 0; code < 256; code++)
+	for (code = 0; code < DHO_COUNT; code++)
 		if (strcmp(dhcp_options[code].name, val) == 0)
 			break;
 
diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 940049c6b4e..da3f27c491b 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhclient.c,v 1.458 2017/07/07 15:39:30 krw Exp $	*/
+/*	$OpenBSD: dhclient.c,v 1.459 2017/07/07 16:58:45 krw Exp $	*/
 
 /*
  * Copyright 2004 Henning Brauer <henning@openbsd.org>
@@ -1197,7 +1197,7 @@ packet_to_lease(struct interface_info *ifi, struct option_data *options)
 	}
 
 	/* Copy the lease options. */
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		if (options[i].len == 0)
 			continue;
 		if (!unknown_ok && strncmp("option-",
@@ -1520,7 +1520,7 @@ send_decline(struct interface_info *ifi)
 void
 make_discover(struct interface_info *ifi, struct client_lease *lease)
 {
-	struct option_data	 options[256];
+	struct option_data	 options[DHO_COUNT];
 	struct dhcp_packet	*packet = &ifi->sent_packet;
 	unsigned char		 discover = DHCPDISCOVER;
 	int			 i;
@@ -1548,7 +1548,7 @@ make_discover(struct interface_info *ifi, struct client_lease *lease)
 		ifi->requested_address.s_addr = INADDR_ANY;
 
 	/* Send any options requested in the config file. */
-	for (i = 0; i < 256; i++)
+	for (i = 0; i < DHO_COUNT; i++)
 		if (!options[i].data &&
 		    config->send_options[i].data) {
 			options[i].data = config->send_options[i].data;
@@ -1588,7 +1588,7 @@ make_discover(struct interface_info *ifi, struct client_lease *lease)
 void
 make_request(struct interface_info *ifi, struct client_lease * lease)
 {
-	struct option_data	 options[256];
+	struct option_data	 options[DHO_COUNT];
 	struct dhcp_packet	*packet = &ifi->sent_packet;
 	unsigned char		 request = DHCPREQUEST;
 	int			 i;
@@ -1625,7 +1625,7 @@ make_request(struct interface_info *ifi, struct client_lease * lease)
 	}
 
 	/* Send any options requested in the config file. */
-	for (i = 0; i < 256; i++)
+	for (i = 0; i < DHO_COUNT; i++)
 		if (!options[i].data && config->send_options[i].data) {
 			options[i].data = config->send_options[i].data;
 			options[i].len = config->send_options[i].len;
@@ -1674,7 +1674,7 @@ make_request(struct interface_info *ifi, struct client_lease * lease)
 void
 make_decline(struct interface_info *ifi, struct client_lease *lease)
 {
-	struct option_data	 options[256];
+	struct option_data	 options[DHO_COUNT];
 	struct dhcp_packet	*packet = &ifi->sent_packet;
 	unsigned char		 decline = DHCPDECLINE;
 	int			 i;
@@ -1747,7 +1747,7 @@ free_client_lease(struct client_lease *lease)
 	free(lease->server_name);
 	free(lease->filename);
 	free(lease->resolv_conf);
-	for (i = 0; i < 256; i++)
+	for (i = 0; i < DHO_COUNT; i++)
 		free(lease->options[i].data);
 
 	free(lease);
@@ -1876,7 +1876,7 @@ lease_as_string(char *name, char *type, struct client_lease *lease)
 		append_statement(string, sizeof(string), "  ssid ", buf);
 	}
 
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		opt = &lease->options[i];
 		if (opt->len == 0)
 			continue;
@@ -2182,7 +2182,7 @@ apply_defaults(struct client_lease *lease)
 	if (config->next_server.s_addr != INADDR_ANY)
 		newlease->next_server.s_addr = config->next_server.s_addr;
 
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		for (j = 0; j < config->ignored_option_count; j++) {
 			if (config->ignored_options[j] == i) {
 				free(newlease->options[i].data);
@@ -2324,7 +2324,7 @@ clone_lease(struct client_lease *oldlease)
 			goto cleanup;
 	}
 
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		if (oldlease->options[i].len == 0)
 			continue;
 		newlease->options[i].len = oldlease->options[i].len;
@@ -2355,7 +2355,7 @@ cleanup:
 void
 apply_ignore_list(char *ignore_list)
 {
-	u_int8_t list[256];
+	u_int8_t list[DHO_COUNT];
 	char *p;
 	int ix, i, j;
 
@@ -2480,7 +2480,7 @@ compare_lease(struct client_lease *active, struct client_lease *new)
 			return (1);
 	}
 
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		if (active->options[i].len != new->options[i].len)
 			return (1);
 		if (memcmp(active->options[i].data, new->options[i].data,
diff --git a/sbin/dhclient/dhcp.h b/sbin/dhclient/dhcp.h
index c0dc07c1e99..29f01fa8c1e 100644
--- a/sbin/dhclient/dhcp.h
+++ b/sbin/dhclient/dhcp.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhcp.h,v 1.18 2015/10/26 16:32:33 krw Exp $	*/
+/*	$OpenBSD: dhcp.h,v 1.19 2017/07/07 16:58:45 krw Exp $	*/
 
 /* Protocol structures. */
 
@@ -182,6 +182,7 @@ struct dhcp_packet {
 #define DHO_CLASSLESS_MS_STATIC_ROUTES	249
 #define DHO_AUTOPROXY_SCRIPT		252
 #define DHO_END				255
+#define DHO_COUNT			256	/* # of DHCP options */
 
 /* DHCP message types. */
 #define DHCPDISCOVER	1
diff --git a/sbin/dhclient/dhcpd.h b/sbin/dhclient/dhcpd.h
index 86b4f7c37f2..a5d8da4cfc0 100644
--- a/sbin/dhclient/dhcpd.h
+++ b/sbin/dhclient/dhcpd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhcpd.h,v 1.206 2017/07/07 15:14:47 krw Exp $	*/
+/*	$OpenBSD: dhcpd.h,v 1.207 2017/07/07 16:58:45 krw Exp $	*/
 
 /*
  * Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
@@ -70,7 +70,7 @@ struct client_lease {
 	char			 ssid[32];
 	uint8_t			 ssid_len;
 	unsigned int		 is_static;
-	struct option_data	 options[256];
+	struct option_data	 options[DHO_COUNT];
 };
 #define BOOTP_LEASE(l)	((l)->options[DHO_DHCP_MESSAGE_TYPE].len == 0)
 
@@ -89,20 +89,20 @@ enum dhcp_state {
 TAILQ_HEAD(client_lease_tq, client_lease);
 
 struct client_config {
-	struct option_data	defaults[256];
+	struct option_data	defaults[DHO_COUNT];
 	enum {
 		ACTION_DEFAULT,
 		ACTION_SUPERSEDE,
 		ACTION_PREPEND,
 		ACTION_APPEND
-	} default_actions[256];
+	} default_actions[DHO_COUNT];
 
 	struct in_addr		 address;
 	struct in_addr		 next_server;
-	struct option_data	 send_options[256];
-	u_int8_t		 required_options[256];
-	u_int8_t		 requested_options[256];
-	u_int8_t		 ignored_options[256];
+	struct option_data	 send_options[DHO_COUNT];
+	u_int8_t		 required_options[DHO_COUNT];
+	u_int8_t		 requested_options[DHO_COUNT];
+	u_int8_t		 ignored_options[DHO_COUNT];
 	int			 requested_option_count;
 	int			 required_option_count;
 	int			 ignored_option_count;
@@ -214,7 +214,7 @@ void get_hw_address(struct interface_info *);
 void sendhup(void);
 
 /* tables.c */
-extern const struct option dhcp_options[256];
+extern const struct option dhcp_options[DHO_COUNT];
 
 /* dhclient.c */
 extern char *path_dhclient_conf;
diff --git a/sbin/dhclient/options.c b/sbin/dhclient/options.c
index aa07efcee41..56d8bc94c9d 100644
--- a/sbin/dhclient/options.c
+++ b/sbin/dhclient/options.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: options.c,v 1.94 2017/07/07 14:53:07 krw Exp $	*/
+/*	$OpenBSD: options.c,v 1.95 2017/07/07 16:58:45 krw Exp $	*/
 
 /* DHCP options parsing and reassembly. */
 
@@ -630,10 +630,10 @@ toobig:
 struct option_data *
 unpack_options(struct dhcp_packet *packet)
 {
-	static struct option_data options[256];
+	static struct option_data options[DHO_COUNT];
 	int i;
 
-	for (i = 0; i < 256; i++) {
+	for (i = 0; i < DHO_COUNT; i++) {
 		free(options[i].data);
 		options[i].data = NULL;
 		options[i].len = 0;
diff --git a/sbin/dhclient/tables.c b/sbin/dhclient/tables.c
index 1d82123c2d4..47cb740ddb0 100644
--- a/sbin/dhclient/tables.c
+++ b/sbin/dhclient/tables.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tables.c,v 1.20 2016/02/06 19:30:52 krw Exp $	*/
+/*	$OpenBSD: tables.c,v 1.21 2017/07/07 16:58:45 krw Exp $	*/
 
 /* Tables of information. */
 
@@ -71,7 +71,7 @@
  * C - CIDR description
  */
 
-const struct option dhcp_options[256] = {
+const struct option dhcp_options[DHO_COUNT] = {
 	/*   0 */ { "pad", "" },
 	/*   1 */ { "subnet-mask", "I" },
 	/*   2 */ { "time-offset", "l" },