3066. [func] The DLZ "dlopen" driver is now built by default,

no longer requiring a configure option.  To
			disable it, use "configure --without-dlopen".
                        Driver also supported on win32.  [RT #23467]

bin/tests/system/dlzexternal/driver.h

@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Written by Andrew Tridgell.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+ * USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This header provides a minimal set of defines and typedefs needed
+ * for building an external DLZ module for bind9. When creating a new
+ * external DLZ driver, please copy this header into your own source
+ * tree.
+ */
+
+#define DLZ_DLOPEN_VERSION 1
+
+/* Return this in flags to dlz_version() if thread safe */
+#define DNS_SDLZFLAG_THREADSAFE		0x00000001U
+
+#if 0
+/* Result codes */
+#define ISC_R_SUCCESS			0
+#define ISC_R_NOMEMORY			1
+#define ISC_R_NOTFOUND			23
+#define ISC_R_FAILURE			25
+
+/* Log levels */
+#define ISC_LOG_INFO		(-1)
+#define ISC_LOG_NOTICE		(-2)
+#define ISC_LOG_WARNING 	(-3)
+#define ISC_LOG_ERROR		(-4)
+#define ISC_LOG_CRITICAL	(-5)
+#endif
+
+/* Some opaque structures */
+typedef void *dns_sdlzlookup_t;
+typedef void *dns_sdlzallnodes_t;
+
+/*
+ * dlz_version() is required for all DLZ external drivers. It should
+ * return DLZ_DLOPEN_VERSION
+ */
+int
+dlz_version(unsigned int *flags);
+
+/*
+ * dlz_create() is required for all DLZ external drivers.
+ */
+isc_result_t
+dlz_create(const char *dlzname, unsigned int argc,
+		   char *argv[], void **dbdata, ...);
+
+/*
+ * dlz_destroy() is optional, and will be called when the driver is
+ * unloaded if supplied
+ */
+void
+dlz_destroy(void *dbdata);
+
+/*
+ * dlz_findzonedb is required for all DLZ external drivers
+ */
+isc_result_t
+dlz_findzonedb(void *dbdata, const char *name);
+
+/*
+ * dlz_lookup is required for all DLZ external drivers
+ */
+isc_result_t
+dlz_lookup(const char *zone, const char *name,
+		   void *dbdata, dns_sdlzlookup_t *lookup);
+
+/*
+ * dlz_allowzonexfr() is optional, and should be supplied if you want
+ * to support zone transfers
+ */
+isc_result_t
+dlz_allowzonexfr(void *dbdata, const char *name, const char *client);
+
+/*
+ * dlz_allnodes() is optional, but must be supplied if supply a
+ * dlz_allowzonexfr() function
+ */
+isc_result_t
+dlz_allnodes(const char *zone, void *dbdata, dns_sdlzallnodes_t *allnodes);
+
+/*
+ * dlz_newversion() is optional. It should be supplied if you want to
+ * support dynamic updates.
+ */
+isc_result_t
+dlz_newversion(const char *zone, void *dbdata, void **versionp);
+
+/* 
+ *  dlz_closeversion() is optional, but must be supplied if you supply
+ *  a dlz_newversion() function
+ */
+void
+dlz_closeversion(const char *zone, isc_boolean_t commit,
+				 void *dbdata, void **versionp);
+
+/*
+ * dlz_configure() is optional, but must be supplied if you want to
+ * support dynamic updates
+ */
+isc_result_t
+dlz_configure(dns_view_t *view, void *dbdata);
+
+/*
+ * dlz_ssumatch() is optional, but must be supplied if you want to
+ * support dynamic updates
+ */
+isc_boolean_t
+dlz_ssumatch(const char *signer, const char *name, const char *tcpaddr,
+			 const char *type, const char *key, isc_uint32_t keydatalen,
+			 unsigned char *keydata, void *dbdata);
+
+/*
+ * dlz_addrdataset() is optional, but must be supplied if you want to
+ * support dynamic updates
+ */
+isc_result_t
+dlz_addrdataset(const char *name, const char *rdatastr,
+				void *dbdata, void *version);
+
+/*
+ * dlz_subrdataset() is optional, but must be supplied if you want to
+ * support dynamic updates
+ */
+isc_result_t
+dlz_subrdataset(const char *name, const char *rdatastr,
+				void *dbdata, void *version);
+
+/*
+ * dlz_delrdataset() is optional, but must be supplied if you want to
+ * support dynamic updates
+ */
+isc_result_t
+dlz_delrdataset(const char *name, const char *type,
+				void *dbdata, void *version);