Merge from vendor/bind9/dist as of the 9.4.2-P2 import

1 files changed, 54 insertions, 15 deletions

diff --git a/contrib/bind9/bin/named/server.c b/contrib/bind9/bin/named/server.c
index 8e0c66cca4d9..79bd125c5498 100644
--- a/contrib/bind9/bin/named/server.c
+++ b/contrib/bind9/bin/named/server.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2004-2008  Internet Systems Consortium, Inc. ("ISC")
  * Copyright (C) 1999-2003  Internet Software Consortium.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: server.c,v 1.419.18.57.10.1 2008/05/22 21:28:04 each Exp $ */
+/* $Id: server.c,v 1.419.18.57.10.3 2008/07/23 12:04:32 marka Exp $ */
 
 /*! \file */
 
@@ -2696,27 +2696,29 @@ static isc_result_t
 load_configuration(const char *filename, ns_server_t *server,
 		   isc_boolean_t first_time)
 {
-	isc_result_t result;
-	isc_interval_t interval;
-	cfg_parser_t *parser = NULL;
+	cfg_aclconfctx_t aclconfctx;
 	cfg_obj_t *config;
-	const cfg_obj_t *options;
-	const cfg_obj_t *views;
+	cfg_parser_t *parser = NULL;
+	const cfg_listelt_t *element;
+	const cfg_obj_t *builtin_views;
+	const cfg_obj_t *maps[3];
 	const cfg_obj_t *obj;
+	const cfg_obj_t *options;
 	const cfg_obj_t *v4ports, *v6ports;
-	const cfg_obj_t *maps[3];
-	const cfg_obj_t *builtin_views;
-	const cfg_listelt_t *element;
+	const cfg_obj_t *views;
 	dns_view_t *view = NULL;
 	dns_view_t *view_next;
-	dns_viewlist_t viewlist;
 	dns_viewlist_t tmpviewlist;
-	cfg_aclconfctx_t aclconfctx;
-	isc_uint32_t interface_interval;
-	isc_uint32_t heartbeat_interval;
-	isc_uint32_t udpsize;
+	dns_viewlist_t viewlist;
 	in_port_t listen_port;
 	int i;
+	isc_interval_t interval;
+	isc_resourcevalue_t files;
+	isc_result_t result;
+	isc_uint32_t heartbeat_interval;
+	isc_uint32_t interface_interval;
+	isc_uint32_t reserved;
+	isc_uint32_t udpsize;
 
 	cfg_aclconfctx_init(&aclconfctx);
 	ISC_LIST_INIT(viewlist);
@@ -2797,6 +2799,43 @@ load_configuration(const char *filename, ns_server_t *server,
 	set_limits(maps);
 
 	/*
+	 * Sanity check on "files" limit.
+	 */
+	result = isc_resource_curlimit(isc_resource_openfiles, &files);
+	if (result == ISC_R_SUCCESS && files < FD_SETSIZE) {
+		isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
+			      NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
+			      "the 'files' limit (%" ISC_PRINT_QUADFORMAT "u) "
+			      "is less than FD_SETSIZE (%d), increase "
+			      "'files' in named.conf or recompile with a "
+			      "smaller FD_SETSIZE.", files, FD_SETSIZE);
+		if (files > FD_SETSIZE)
+			files = FD_SETSIZE;
+	} else
+		files = FD_SETSIZE;
+
+	/*
+	 * Set the number of socket reserved for TCP, stdio etc.
+	 */
+	obj = NULL;
+	result = ns_config_get(maps, "reserved-sockets", &obj);
+	INSIST(result == ISC_R_SUCCESS);
+	reserved = cfg_obj_asuint32(obj);
+	if (files < 128U)			/* Prevent underflow. */
+		reserved = 0;
+	else if (reserved > files - 128U)	/* Mimimum UDP space. */
+		reserved = files - 128;
+	if (reserved < 128U)			/* Mimimum TCP/stdio space. */
+		reserved = 128;
+	if (reserved + 128U > files) {
+		isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
+                              NS_LOGMODULE_SERVER, ISC_LOG_WARNING,
+			      "less than 128 UDP sockets available after "
+			      "applying 'reserved-sockets' and 'files'");
+	}
+	isc__socketmgr_setreserved(ns_g_socketmgr, reserved);
+	
+	/*
 	 * Configure various server options.
 	 */
 	configure_server_quota(maps, "transfers-out", &server->xfroutquota);