Add cmap service

Cmap service is application developer interface to icmap and it is
direct replacement for confdb.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>

include/corosync/cmap.h

@@ -0,0 +1,334 @@
+/*
+ * Copyright (c) 2011 Red Hat, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Jan Friesse (jfriesse@redhat.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the Red Hat, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef COROSYNC_CMAP_H_DEFINED
+#define COROSYNC_CMAP_H_DEFINED
+
+#include <corosync/corotypes.h>
+#include <corosync/hdb.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @addtogroup cmap_corosync
+ *
+ * @{
+ */
+
+/*
+ * Handle for cmap service connection
+ */
+typedef uint64_t cmap_handle_t;
+
+/*
+ * Handle for cmap iterator
+ */
+typedef uint64_t cmap_iter_handle_t;
+
+/*
+ * Handle for cmap tracking function
+ */
+typedef uint64_t cmap_track_handle_t;
+
+/*
+ * Maximum length of key in cmap
+ */
+#define CMAP_KEYNAME_MAXLEN            255
+/*
+ * Minumum length of key in cmap
+ */
+#define CMAP_KEYNAME_MINLEN            3
+
+/*
+ * Tracking values.
+ */
+#define CMAP_TRACK_ADD		4
+#define CMAP_TRACK_DELETE	1
+#define CMAP_TRACK_MODIFY	2
+/*
+ * Whole prefix is tracked, instead of key only (so "totem." tracking means that
+ * "totem.nodeid", "totem.version", ... applies). This value is also never returned
+ * inside of callback and is used only in adding track
+ */
+#define CMAP_TRACK_PREFIX	8
+
+/*
+ * Possible types of value. Binary is raw data without trailing zero with given length
+ */
+typedef enum {
+    CMAP_VALUETYPE_INT8 	=  1,
+    CMAP_VALUETYPE_UINT8	=  2,
+    CMAP_VALUETYPE_INT16	=  3,
+    CMAP_VALUETYPE_UINT16	=  4,
+    CMAP_VALUETYPE_INT32	=  5,
+    CMAP_VALUETYPE_UINT32	=  6,
+    CMAP_VALUETYPE_INT64	=  7,
+    CMAP_VALUETYPE_UINT64	=  8,
+    CMAP_VALUETYPE_FLOAT	=  9,
+    CMAP_VALUETYPE_DOUBLE	= 10,
+    CMAP_VALUETYPE_STRING	= 11,
+    CMAP_VALUETYPE_BINARY	= 12,
+} cmap_value_types_t;
+
+/*
+ * Structure passed as new_value and old_value in change callback. It contains type of
+ * key, length of key and pointer to value of key
+ */
+struct cmap_notify_value {
+	cmap_value_types_t type;
+	size_t len;
+	const void *data;
+};
+
+/*
+ * Prototype for notify callback function. Even is one of CMAP_TRACK_* event, key_name is
+ * changed key, new and old_value contains values or are zeroed (in other words, type is non
+ * existing 0 type) if there were no old (creating of key) or new (deleting of key) value.
+ * user_data are passed when adding tracking.
+ */
+typedef void (*cmap_notify_fn_t) (
+	cmap_handle_t cmap_handle,
+	cmap_track_handle_t cmap_track_handle,
+	int32_t event,
+	const char *key_name,
+	struct cmap_notify_value new_value,
+	struct cmap_notify_value old_value,
+	void *user_data);
+
+/**
+ * Create a new cmap connection
+ *
+ * @param handle will be filled with handle to be used for all following
+ * operations with cht.
+ */
+extern cs_error_t cmap_initialize (
+	cmap_handle_t *handle);
+
+/**
+ * Close the cmap handle
+ * @param handle cmap handle
+ */
+extern cs_error_t cmap_finalize (
+	cmap_handle_t handle);
+
+/*
+ * Get a file descriptor on which to poll.  cmap_handle_t is NOT a
+ * file descriptor and may not be used directly.
+ * @param handle cmap handle initialized by cmap_initialize
+ * @param fd file descriptor for poll
+ */
+extern cs_error_t cmap_fd_get (
+	cmap_handle_t handle,
+	int *fd);
+
+/**
+ * Dispatch data from service.
+ * @param handle cmap handle initialized by cmap_initialize
+ * @param dispatch_types one of standard corosync dispatch values
+ */
+extern cs_error_t cmap_dispatch (
+	cmap_handle_t handle,
+	cs_dispatch_flags_t dispatch_types);
+/*
+ * Get/set context variable
+ */
+extern cs_error_t cmap_context_get (
+	cmap_handle_t handle,
+	const void **context);
+
+extern cs_error_t cmap_context_set (
+	cmap_handle_t handle,
+	const void *context);
+
+
+/**
+ * Store value in cmap
+ * @param handle cmap handle
+ * @param key_name name of key where to store value
+ * @param value value to store
+ * @param value_len length of value to store
+ * @param type type to store
+ */
+extern cs_error_t cmap_set(
+	cmap_handle_t handle,
+	const char *key_name,
+	const void *value,
+	size_t value_len,
+	cmap_value_types_t type);
+
+/*
+ * Shortcuts for cmap_set with given type
+ */
+extern cs_error_t cmap_set_int8(cmap_handle_t handle, const char *key_name, int8_t value);
+extern cs_error_t cmap_set_uint8(cmap_handle_t handle, const char *key_name, uint8_t value);
+extern cs_error_t cmap_set_int16(cmap_handle_t handle, const char *key_name, int16_t value);
+extern cs_error_t cmap_set_uint16(cmap_handle_t handle, const char *key_name, uint16_t value);
+extern cs_error_t cmap_set_int32(cmap_handle_t handle, const char *key_name, int32_t value);
+extern cs_error_t cmap_set_uint32(cmap_handle_t handle, const char *key_name, uint32_t value);
+extern cs_error_t cmap_set_int64(cmap_handle_t handle, const char *key_name, int64_t value);
+extern cs_error_t cmap_set_uint64(cmap_handle_t handle, const char *key_name, uint64_t value);
+extern cs_error_t cmap_set_float(cmap_handle_t handle, const char *key_name, float value);
+extern cs_error_t cmap_set_double(cmap_handle_t handle, const char *key_name, double value);
+extern cs_error_t cmap_set_string(cmap_handle_t handle, const char *key_name, const char *value);
+
+/**
+ * Deletes key from cmap database
+ * @param handle cmap handle
+ * @param key_name name of key to delete
+ */
+extern cs_error_t cmap_delete(cmap_handle_t handle, const char *key_name);
+
+/**
+ * Retrieve value of key key_name and store it in user preallocated value pointer.
+ * value can be NULL, and then only value_len and/or type is returned (both of them
+ * can also be NULL). If value is not NULL, actual length of value in map is checked
+ * against value_len. If *value_len is shorter then length of value in map, error
+ * CS_ERR_INVALID_PARAM is returned. After successful copy of value, value_len is
+ * set to actual length of value in map.
+ *
+ * @param handle cmap handle
+ * @param key_name name of key where to get value
+ * @param value pointer to store data (or NULL)
+ * @param value_len pointer with length of value (value != NULL), or pointer where value length
+ * will be returned (value == NULL) or NULL.
+ * @param type type of value in cmap
+ */
+extern cs_error_t cmap_get(
+	cmap_handle_t handle,
+	const char *key_name,
+	void *value,
+	size_t *value_len,
+	cmap_value_types_t *type);
+
+/*
+ * Shortcuts for cmap_get.
+ */
+extern cs_error_t cmap_get_int8(cmap_handle_t handle, const char *key_name, int8_t *i8);
+extern cs_error_t cmap_get_uint8(cmap_handle_t handle, const char *key_name, uint8_t *u8);
+extern cs_error_t cmap_get_int16(cmap_handle_t handle, const char *key_name, int16_t *i16);
+extern cs_error_t cmap_get_uint16(cmap_handle_t handle, const char *key_name, uint16_t *u16);
+extern cs_error_t cmap_get_int32(cmap_handle_t handle, const char *key_name, int32_t *i32);
+extern cs_error_t cmap_get_uint32(cmap_handle_t handle, const char *key_name, uint32_t *u32);
+extern cs_error_t cmap_get_int64(cmap_handle_t handle, const char *key_name, int64_t *i64);
+extern cs_error_t cmap_get_uint64(cmap_handle_t handle, const char *key_name, uint64_t *u64);
+extern cs_error_t cmap_get_float(cmap_handle_t handle, const char *key_name, float *flt);
+extern cs_error_t cmap_get_double(cmap_handle_t handle, const char *key_name, double *dbl);
+
+/**
+ * Shortcut for cmap_get for string type. Returned string is newly allocated and
+ * caller is responsible for freeing memory
+ * @param handle cmap handle
+ * @param key_name name of key to get value from
+ * @param str pointer where char pointer will be stored
+ */
+extern cs_error_t cmap_get_string(cmap_handle_t handle, const char *key_name, char **str);
+
+/**
+ * Increment value of key_name if it is [u]int* type
+ * @param handle cmap handle
+ * @param key_name key name
+ */
+extern cs_error_t cmap_inc(cmap_handle_t handle, const char *key_name);
+
+/**
+ * Decrement value of key_name if it is [u]int* type
+ * @param handle cmap handle
+ * @param key_name key name
+ */
+extern cs_error_t cmap_dec(cmap_handle_t handle, const char *key_name);
+
+/**
+ * Initialize iterator with given prefix
+ * @param handle cmap handle
+ * @param prefix prefix to iterate on
+ * @param cmap_iter_handle value used for getting next value of iterator and/or deleting iteration
+ */
+extern cs_error_t cmap_iter_init(cmap_handle_t handle, const char *prefix, cmap_iter_handle_t *cmap_iter_handle);
+
+/**
+ * Return next item in iterator iter. value_len and type are optional (= can be NULL), but if set,
+ * length of returned value and/or type is returned.
+ *
+ * @param handle cmap handle
+ * @param cmap_iter_handle handle of iteration returned by cmap_iter_init
+ * @param key_name place to store name of key. Maximum length is CMAP_KEYNAME_MAXLEN
+ * @param value_len length of value
+ * @param type type of value
+ * @return CS_NO_SECTION if there are no more sections to iterate
+ */
+extern cs_error_t cmap_iter_next(
+		cmap_handle_t handle,
+		cmap_iter_handle_t iter_handle,
+		char key_name[],
+		size_t *value_len,
+		cmap_value_types_t *type);
+
+/**
+ * Finalize iterator
+ */
+extern cs_error_t cmap_iter_finalize(cmap_handle_t handle, cmap_iter_handle_t iter_handle);
+
+/*
+ * Add tracking function for given key_name. Tracked changes (add|modify|delete) depend on track_type,
+ * which is bitwise or of CMAP_TRACK_* values. notify_fn is called on change, where user_data pointer
+ * is passed (unchanged). Value which can be used to delete tracking is passed as cmap_track.
+ * @param handle cmap handle
+ * @param key_name name of key to track changes on
+ * @param track_type bitwise-or of CMAP_TRACK_* values
+ * @param notify_fn function to be called on change of key
+ * @param user_data given pointer is unchanged passed to notify_fn
+ * @param cmap_track_handle handle used for removing of newly created track
+ */
+extern cs_error_t cmap_track_add(
+	cmap_handle_t handle,
+	const char *key_name,
+        int32_t track_type,
+	cmap_notify_fn_t notify_fn,
+        void *user_data,
+        cmap_track_handle_t *cmap_track_handle);
+
+/**
+ * Delete track created previously by cmap_track_add
+ * @param handle cmap handle
+ * @param track_handle Track handle
+ */
+extern cs_error_t cmap_track_delete(cmap_handle_t handle, cmap_track_handle_t track_handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* COROSYNC_CMAP_H_DEFINED */

include/corosync/corodefs.h

@@ -59,7 +59,8 @@ enum corosync_service_types {
 	TST_SV1_SERVICE = 18,
 	TST_SV2_SERVICE = 19,
 	MON_SERVICE = 20,
-	WD_SERVICE = 21
+	WD_SERVICE = 21,
+	CMAP_SERVICE = 22,
 };
 
 #ifdef HAVE_SMALL_MEMORY_FOOTPRINT

include/corosync/ipc_cmap.h

@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2011 Red Hat, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Jan Friesse (jfriesse@redhat.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the Red Hat, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef IPC_CMAP_H_DEFINED
+#define IPC_CMAP_H_DEFINED
+
+#include <netinet/in.h>
+#include <corosync/corotypes.h>
+#include <corosync/mar_gen.h>
+
+enum req_cmap_types {
+	MESSAGE_REQ_CMAP_SET = 0,
+	MESSAGE_REQ_CMAP_DELETE = 1,
+	MESSAGE_REQ_CMAP_GET = 2,
+	MESSAGE_REQ_CMAP_ADJUST_INT = 3,
+	MESSAGE_REQ_CMAP_ITER_INIT = 4,
+	MESSAGE_REQ_CMAP_ITER_NEXT = 5,
+	MESSAGE_REQ_CMAP_ITER_FINALIZE = 6,
+	MESSAGE_REQ_CMAP_TRACK_ADD = 7,
+	MESSAGE_REQ_CMAP_TRACK_DELETE = 8,
+};
+
+enum res_cmap_types {
+	MESSAGE_RES_CMAP_SET = 0,
+	MESSAGE_RES_CMAP_DELETE = 1,
+	MESSAGE_RES_CMAP_GET = 2,
+	MESSAGE_RES_CMAP_ADJUST_INT = 3,
+	MESSAGE_RES_CMAP_ITER_INIT = 4,
+	MESSAGE_RES_CMAP_ITER_NEXT = 5,
+	MESSAGE_RES_CMAP_ITER_FINALIZE = 6,
+	MESSAGE_RES_CMAP_TRACK_ADD = 7,
+	MESSAGE_RES_CMAP_TRACK_DELETE = 8,
+	MESSAGE_RES_CMAP_NOTIFY_CALLBACK = 9,
+};
+
+struct req_lib_cmap_set {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_size_t value_len __attribute__((aligned(8)));
+	mar_uint8_t type __attribute__((aligned(8)));
+	mar_uint8_t value[] __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_set {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_delete {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_delete {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_get {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_size_t value_len __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_get {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_size_t value_len __attribute__((aligned(8)));
+	mar_uint8_t type __attribute__((aligned(8)));
+	mar_uint8_t value[] __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_adjust_int {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_int32_t step __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_adjust_int {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_iter_init {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t prefix __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_iter_init {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_uint64_t iter_handle __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_iter_next {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_uint64_t iter_handle __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_iter_next {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_size_t value_len __attribute__((aligned(8)));
+	mar_uint8_t type __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_iter_finalize {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_uint64_t iter_handle __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_iter_finalize {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_track_add {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_int32_t track_type __attribute__((aligned(8)));
+	mar_uint64_t track_inst_handle __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_track_add {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_uint64_t track_handle __attribute__((aligned(8)));
+};
+
+struct req_lib_cmap_track_delete {
+	struct qb_ipc_request_header header __attribute__((aligned(8)));
+	mar_uint64_t track_handle __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_track_delete {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_uint64_t track_inst_handle __attribute__((aligned(8)));
+};
+
+struct res_lib_cmap_notify_callback {
+	struct qb_ipc_response_header header __attribute__((aligned(8)));
+	mar_uint64_t track_inst_handle __attribute__((aligned(8)));
+	mar_name_t key_name __attribute__((aligned(8)));
+	mar_int32_t event __attribute__((aligned(8)));
+	mar_uint8_t new_value_type __attribute__((aligned(8)));
+	mar_uint8_t old_value_type __attribute__((aligned(8)));
+	mar_size_t new_value_len __attribute__((aligned(8)));
+	mar_size_t old_value_len __attribute__((aligned(8)));
+	/*
+	 * After old_vale_len, there are two items with length of new_value_len
+	 * and old_value_len, only first (as a pointer) is defined
+	 *
+	 * mar_uint8_t *new_value;
+	 * mar_uint8_t *old_value;
+	 */
+	mar_uint8_t new_value[];
+};
+
+#endif /* IPC_CMAP_H_DEFINED */

services/Makefile.am

@@ -37,7 +37,7 @@ INCLUDES		= -I$(top_builddir)/include -I$(top_srcdir)/include \
 			  -I$(top_builddir)/include/corosync \
 			  -I$(top_srcdir)/include/corosync
 
-SERVICE_LCRSO		= evs cfg cpg confdb pload
+SERVICE_LCRSO		= evs cfg cpg confdb pload cmap
 if BUILD_WATCHDOG
 SERVICE_LCRSO		+= wd
 endif

services/cmap.c

@@ -0,0 +1,645 @@
+/*
+ * Copyright (c) 2011 Red Hat, Inc.
+ *
+ * All rights reserved.
+ *
+ * Author: Jan Friesse (jfriesse@redhat.com)
+ *
+ * This software licensed under BSD license, the text of which follows:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * - Neither the name of the Red Hat, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <poll.h>
+#include <assert.h>
+
+#include <qb/qbloop.h>
+#include <qb/qbipc_common.h>
+
+#include <corosync/corotypes.h>
+#include <corosync/corodefs.h>
+#include <corosync/list.h>
+#include <corosync/mar_gen.h>
+#include <corosync/ipc_cmap.h>
+#include <corosync/lcr/lcr_comp.h>
+#include <corosync/engine/logsys.h>
+#include <corosync/engine/coroapi.h>
+#include <corosync/engine/icmap.h>
+
+#define hdb_error_to_cs(_result_) qb_to_cs_error(_result_)
+
+LOGSYS_DECLARE_SUBSYS ("CMAP");
+
+struct cmap_conn_info {
+	struct hdb_handle_database iter_db;
+	struct hdb_handle_database track_db;
+};
+
+typedef uint64_t cmap_iter_handle_t;
+typedef uint64_t cmap_track_handle_t;
+
+struct cmap_track_user_data {
+	void *conn;
+	cmap_track_handle_t track_handle;
+	uint64_t track_inst_handle;
+};
+
+static struct corosync_api_v1 *api;
+
+static int cmap_exec_init_fn (struct corosync_api_v1 *corosync_api);
+static int cmap_exec_exit_fn(void);
+
+static int cmap_lib_init_fn (void *conn);
+static int cmap_lib_exit_fn (void *conn);
+
+static void message_handler_req_lib_cmap_set(void *conn, const void *message);
+static void message_handler_req_lib_cmap_delete(void *conn, const void *message);
+static void message_handler_req_lib_cmap_get(void *conn, const void *message);
+static void message_handler_req_lib_cmap_adjust_int(void *conn, const void *message);
+static void message_handler_req_lib_cmap_iter_init(void *conn, const void *message);
+static void message_handler_req_lib_cmap_iter_next(void *conn, const void *message);
+static void message_handler_req_lib_cmap_iter_finalize(void *conn, const void *message);
+static void message_handler_req_lib_cmap_track_add(void *conn, const void *message);
+static void message_handler_req_lib_cmap_track_delete(void *conn, const void *message);
+
+static void cmap_notify_fn(int32_t event,
+		const char *key_name,
+		struct icmap_notify_value new_val,
+		struct icmap_notify_value old_val,
+		void *user_data);
+
+/*
+ * Library Handler Definition
+ */
+static struct corosync_lib_handler cmap_lib_engine[] =
+{
+	{ /* 0 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_set,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 1 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_delete,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 2 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_get,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 3 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_adjust_int,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 4 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_iter_init,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 5 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_iter_next,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 6 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_iter_finalize,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 7 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_track_add,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+	{ /* 8 */
+		.lib_handler_fn				= message_handler_req_lib_cmap_track_delete,
+		.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED
+	},
+};
+
+
+struct corosync_service_engine cmap_service_engine = {
+	.name				        = "corosync configuration map access",
+	.id					= CMAP_SERVICE,
+	.priority				= 1,
+	.private_data_size			= sizeof(struct cmap_conn_info),
+	.flow_control				= CS_LIB_FLOW_CONTROL_NOT_REQUIRED,
+	.allow_inquorate			= CS_LIB_ALLOW_INQUORATE,
+	.lib_init_fn				= cmap_lib_init_fn,
+	.lib_exit_fn				= cmap_lib_exit_fn,
+	.lib_engine				= cmap_lib_engine,
+	.lib_engine_count			= sizeof (cmap_lib_engine) / sizeof (struct corosync_lib_handler),
+	.exec_init_fn				= cmap_exec_init_fn,
+	.exec_exit_fn				= cmap_exec_exit_fn,
+};
+
+/*
+ * Dynamic loader definition
+ */
+static struct corosync_service_engine *cmap_get_service_engine_ver0 (void);
+
+static struct corosync_service_engine_iface_ver0 cmap_service_engine_iface = {
+	.corosync_get_service_engine_ver0		= cmap_get_service_engine_ver0
+};
+
+static struct lcr_iface corosync_cmap_ver0[1] = {
+	{
+		.name				= "corosync_cmap",
+		.version			= 0,
+		.versions_replace		= 0,
+		.versions_replace_count         = 0,
+		.dependencies			= 0,
+		.dependency_count		= 0,
+		.constructor			= NULL,
+		.destructor			= NULL,
+		.interfaces			= NULL
+	}
+};
+
+static struct lcr_comp cmap_comp_ver0 = {
+	.iface_count			= 1,
+	.ifaces			        = corosync_cmap_ver0
+};
+
+
+static struct corosync_service_engine *cmap_get_service_engine_ver0 (void)
+{
+	return (&cmap_service_engine);
+}
+
+#ifdef COROSYNC_SOLARIS
+void corosync_lcr_component_register (void);
+
+void corosync_lcr_component_register (void) {
+#else
+__attribute__ ((constructor)) static void corosync_lcr_component_register (void) {
+#endif
+        lcr_interfaces_set (&corosync_cmap_ver0[0], &cmap_service_engine_iface);
+
+	lcr_component_register (&cmap_comp_ver0);
+}
+
+static int cmap_exec_exit_fn(void)
+{
+	return 0;
+}
+
+static int cmap_exec_init_fn (
+	struct corosync_api_v1 *corosync_api)
+{
+
+#ifdef COROSYNC_SOLARIS
+	logsys_subsys_init();
+#endif
+	api = corosync_api;
+
+	return (0);
+}
+
+static int cmap_lib_init_fn (void *conn)
+{
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+
+	log_printf(LOGSYS_LEVEL_DEBUG, "lib_init_fn: conn=%p\n", conn);
+
+	api->ipc_refcnt_inc(conn);
+
+	memset(conn_info, 0, sizeof(*conn_info));
+	hdb_create(&conn_info->iter_db);
+	hdb_create(&conn_info->track_db);
+
+	return (0);
+}
+
+static int cmap_lib_exit_fn (void *conn)
+{
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+	hdb_handle_t iter_handle = 0;
+	icmap_iter_t *iter;
+	hdb_handle_t track_handle = 0;
+	icmap_track_t *track;
+
+	log_printf(LOGSYS_LEVEL_DEBUG, "exit_fn for conn=%p\n", conn);
+
+	hdb_iterator_reset(&conn_info->iter_db);
+        while (hdb_iterator_next(&conn_info->iter_db,
+                (void*)&iter, &iter_handle) == 0) {
+
+		icmap_iter_finalize(*iter);
+
+		(void)hdb_handle_put (&conn_info->iter_db, iter_handle);
+        }
+
+	hdb_destroy(&conn_info->iter_db);
+
+	hdb_iterator_reset(&conn_info->track_db);
+        while (hdb_iterator_next(&conn_info->track_db,
+                (void*)&track, &track_handle) == 0) {
+
+		free(icmap_track_get_user_data(*track));
+
+		icmap_track_delete(*track);
+
+		(void)hdb_handle_put (&conn_info->track_db, track_handle);
+        }
+	hdb_destroy(&conn_info->track_db);
+
+	api->ipc_refcnt_dec(conn);
+
+	return (0);
+}
+
+static void message_handler_req_lib_cmap_set(void *conn, const void *message)
+{
+	const struct req_lib_cmap_set *req_lib_cmap_set = message;
+	struct res_lib_cmap_set res_lib_cmap_set;
+	cs_error_t ret;
+
+	if (icmap_is_key_ro((char *)req_lib_cmap_set->key_name.value)) {
+		ret = CS_ERR_ACCESS;
+	} else {
+		ret = icmap_set((char *)req_lib_cmap_set->key_name.value, &req_lib_cmap_set->value,
+				req_lib_cmap_set->value_len, req_lib_cmap_set->type);
+	}
+
+	memset(&res_lib_cmap_set, 0, sizeof(res_lib_cmap_set));
+	res_lib_cmap_set.header.size = sizeof(res_lib_cmap_set);
+	res_lib_cmap_set.header.id = MESSAGE_RES_CMAP_SET;
+	res_lib_cmap_set.header.error = ret;
+
+	api->ipc_response_send(conn, &res_lib_cmap_set, sizeof(res_lib_cmap_set));
+}
+
+static void message_handler_req_lib_cmap_delete(void *conn, const void *message)
+{
+	const struct req_lib_cmap_set *req_lib_cmap_set = message;
+	struct res_lib_cmap_delete res_lib_cmap_delete;
+	cs_error_t ret;
+
+	if (icmap_is_key_ro((char *)req_lib_cmap_set->key_name.value)) {
+		ret = CS_ERR_ACCESS;
+	} else {
+		ret = icmap_delete((char *)req_lib_cmap_set->key_name.value);
+	}
+
+	memset(&res_lib_cmap_delete, 0, sizeof(res_lib_cmap_delete));
+	res_lib_cmap_delete.header.size = sizeof(res_lib_cmap_delete);
+	res_lib_cmap_delete.header.id = MESSAGE_RES_CMAP_DELETE;
+	res_lib_cmap_delete.header.error = ret;
+
+	api->ipc_response_send(conn, &res_lib_cmap_delete, sizeof(res_lib_cmap_delete));
+}
+
+static void message_handler_req_lib_cmap_get(void *conn, const void *message)
+{
+	const struct req_lib_cmap_get *req_lib_cmap_get = message;
+	struct res_lib_cmap_get *res_lib_cmap_get;
+	struct res_lib_cmap_get error_res_lib_cmap_get;
+	cs_error_t ret;
+	size_t value_len;
+	size_t res_lib_cmap_get_size;
+	icmap_value_types_t type;
+	void *value;
+
+	value_len = req_lib_cmap_get->value_len;
+
+	res_lib_cmap_get_size = sizeof(*res_lib_cmap_get) + value_len;
+	res_lib_cmap_get = malloc(res_lib_cmap_get_size);
+	if (res_lib_cmap_get == NULL) {
+		ret = CS_ERR_NO_MEMORY;
+		goto error_exit;
+	}
+
+	memset(res_lib_cmap_get, 0, res_lib_cmap_get_size);
+
+	if (value_len > 0) {
+		value = res_lib_cmap_get->value;
+	} else {
+		value = NULL;
+	}
+
+	ret = icmap_get((char *)req_lib_cmap_get->key_name.value,
+			value,
+			&value_len,
+			&type);
+
+	if (ret != CS_OK) {
+		free(res_lib_cmap_get);
+		goto error_exit;
+	}
+
+	res_lib_cmap_get->header.size = res_lib_cmap_get_size;
+	res_lib_cmap_get->header.id = MESSAGE_RES_CMAP_GET;
+	res_lib_cmap_get->header.error = ret;
+	res_lib_cmap_get->type = type;
+	res_lib_cmap_get->value_len = value_len;
+
+	api->ipc_response_send(conn, res_lib_cmap_get, res_lib_cmap_get_size);
+	free(res_lib_cmap_get);
+
+	return ;
+
+error_exit:
+	memset(&error_res_lib_cmap_get, 0, sizeof(error_res_lib_cmap_get));
+	error_res_lib_cmap_get.header.size = sizeof(error_res_lib_cmap_get);
+	error_res_lib_cmap_get.header.id = MESSAGE_RES_CMAP_GET;
+	error_res_lib_cmap_get.header.error = ret;
+
+	api->ipc_response_send(conn, &error_res_lib_cmap_get, sizeof(error_res_lib_cmap_get));
+}
+
+static void message_handler_req_lib_cmap_adjust_int(void *conn, const void *message)
+{
+	const struct req_lib_cmap_adjust_int *req_lib_cmap_adjust_int = message;
+	struct res_lib_cmap_adjust_int res_lib_cmap_adjust_int;
+	cs_error_t ret;
+
+	ret = icmap_adjust_int((char *)req_lib_cmap_adjust_int->key_name.value, req_lib_cmap_adjust_int->step);
+
+	memset(&res_lib_cmap_adjust_int, 0, sizeof(res_lib_cmap_adjust_int));
+	res_lib_cmap_adjust_int.header.size = sizeof(res_lib_cmap_adjust_int);
+	res_lib_cmap_adjust_int.header.id = MESSAGE_RES_CMAP_ADJUST_INT;
+	res_lib_cmap_adjust_int.header.error = ret;
+
+	api->ipc_response_send(conn, &res_lib_cmap_adjust_int, sizeof(res_lib_cmap_adjust_int));
+}
+
+static void message_handler_req_lib_cmap_iter_init(void *conn, const void *message)
+{
+	const struct req_lib_cmap_iter_init *req_lib_cmap_iter_init = message;
+	struct res_lib_cmap_iter_init res_lib_cmap_iter_init;
+	cs_error_t ret;
+	icmap_iter_t iter;
+	icmap_iter_t *hdb_iter;
+	cmap_iter_handle_t handle;
+	const char *prefix;
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+
+	if (req_lib_cmap_iter_init->prefix.length > 0) {
+		prefix = (char *)req_lib_cmap_iter_init->prefix.value;
+	} else {
+		prefix = NULL;
+	}
+
+	iter = icmap_iter_init(prefix);
+	if (iter == NULL) {
+		ret = CS_ERR_NO_SECTIONS;
+		goto reply_send;
+	}
+
+	ret = hdb_error_to_cs(hdb_handle_create(&conn_info->iter_db, sizeof(iter), &handle));
+	if (ret != CS_OK) {
+		goto reply_send;
+	}
+
+	ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db, handle, (void *)&hdb_iter));
+	if (ret != CS_OK) {
+		goto reply_send;
+	}
+
+	*hdb_iter = iter;
+
+	(void)hdb_handle_put (&conn_info->iter_db, handle);
+
+reply_send:
+	memset(&res_lib_cmap_iter_init, 0, sizeof(res_lib_cmap_iter_init));
+	res_lib_cmap_iter_init.header.size = sizeof(res_lib_cmap_iter_init);
+	res_lib_cmap_iter_init.header.id = MESSAGE_RES_CMAP_ITER_INIT;
+	res_lib_cmap_iter_init.header.error = ret;
+	res_lib_cmap_iter_init.iter_handle = handle;
+
+	api->ipc_response_send(conn, &res_lib_cmap_iter_init, sizeof(res_lib_cmap_iter_init));
+}
+
+static void message_handler_req_lib_cmap_iter_next(void *conn, const void *message)
+{
+	const struct req_lib_cmap_iter_next *req_lib_cmap_iter_next = message;
+	struct res_lib_cmap_iter_next res_lib_cmap_iter_next;
+	cs_error_t ret;
+	icmap_iter_t *iter;
+	size_t value_len;
+	icmap_value_types_t type;
+	const char *res = NULL;
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+
+	ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db,
+				req_lib_cmap_iter_next->iter_handle, (void *)&iter));
+	if (ret != CS_OK) {
+		goto reply_send;
+	}
+
+	res = icmap_iter_next(*iter, &value_len, &type);
+	if (res == NULL) {
+		ret = CS_ERR_NO_SECTIONS;
+	}
+
+	(void)hdb_handle_put (&conn_info->iter_db, req_lib_cmap_iter_next->iter_handle);
+
+reply_send:
+	memset(&res_lib_cmap_iter_next, 0, sizeof(res_lib_cmap_iter_next));
+	res_lib_cmap_iter_next.header.size = sizeof(res_lib_cmap_iter_next);
+	res_lib_cmap_iter_next.header.id = MESSAGE_RES_CMAP_ITER_NEXT;
+	res_lib_cmap_iter_next.header.error = ret;
+
+	if (res != NULL) {
+		res_lib_cmap_iter_next.value_len = value_len;
+		res_lib_cmap_iter_next.type = type;
+
+		memcpy(res_lib_cmap_iter_next.key_name.value, res, strlen(res));
+	        res_lib_cmap_iter_next.key_name.length = strlen(res);
+	}
+
+	api->ipc_response_send(conn, &res_lib_cmap_iter_next, sizeof(res_lib_cmap_iter_next));
+}
+
+static void message_handler_req_lib_cmap_iter_finalize(void *conn, const void *message)
+{
+	const struct req_lib_cmap_iter_finalize *req_lib_cmap_iter_finalize = message;
+	struct res_lib_cmap_iter_finalize res_lib_cmap_iter_finalize;
+	cs_error_t ret;
+	icmap_iter_t *iter;
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+
+	ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db,
+				req_lib_cmap_iter_finalize->iter_handle, (void *)&iter));
+	if (ret != CS_OK) {
+		goto reply_send;
+	}
+
+	icmap_iter_finalize(*iter);
+
+	(void)hdb_handle_destroy(&conn_info->iter_db, req_lib_cmap_iter_finalize->iter_handle);
+
+	(void)hdb_handle_put (&conn_info->iter_db, req_lib_cmap_iter_finalize->iter_handle);
+
+reply_send:
+	memset(&res_lib_cmap_iter_finalize, 0, sizeof(res_lib_cmap_iter_finalize));
+	res_lib_cmap_iter_finalize.header.size = sizeof(res_lib_cmap_iter_finalize);
+	res_lib_cmap_iter_finalize.header.id = MESSAGE_RES_CMAP_ITER_FINALIZE;
+	res_lib_cmap_iter_finalize.header.error = ret;
+
+	api->ipc_response_send(conn, &res_lib_cmap_iter_finalize, sizeof(res_lib_cmap_iter_finalize));
+}
+
+static void cmap_notify_fn(int32_t event,
+		const char *key_name,
+		struct icmap_notify_value new_val,
+		struct icmap_notify_value old_val,
+		void *user_data)
+{
+	struct cmap_track_user_data *cmap_track_user_data = (struct cmap_track_user_data *)user_data;
+	struct res_lib_cmap_notify_callback res_lib_cmap_notify_callback;
+	struct iovec iov[3];
+
+	memset(&res_lib_cmap_notify_callback, 0, sizeof(res_lib_cmap_notify_callback));
+
+	res_lib_cmap_notify_callback.header.size = sizeof(res_lib_cmap_notify_callback) + new_val.len + old_val.len;
+	res_lib_cmap_notify_callback.header.id = MESSAGE_RES_CMAP_NOTIFY_CALLBACK;
+	res_lib_cmap_notify_callback.header.error = CS_OK;
+
+	res_lib_cmap_notify_callback.new_value_type = new_val.type;
+	res_lib_cmap_notify_callback.old_value_type = old_val.type;
+	res_lib_cmap_notify_callback.new_value_len = new_val.len;
+	res_lib_cmap_notify_callback.old_value_len = old_val.len;
+	res_lib_cmap_notify_callback.event = event;
+	res_lib_cmap_notify_callback.key_name.length = strlen(key_name);
+	res_lib_cmap_notify_callback.track_inst_handle = cmap_track_user_data->track_inst_handle;
+
+	memcpy(res_lib_cmap_notify_callback.key_name.value, key_name, strlen(key_name));
+
+	iov[0].iov_base = (char *)&res_lib_cmap_notify_callback;
+	iov[0].iov_len = sizeof(res_lib_cmap_notify_callback);
+	iov[1].iov_base = (char *)new_val.data;
+	iov[1].iov_len = new_val.len;
+	iov[2].iov_base = (char *)old_val.data;
+	iov[2].iov_len = old_val.len;
+
+	api->ipc_dispatch_iov_send(cmap_track_user_data->conn, iov, 3);
+}
+
+static void message_handler_req_lib_cmap_track_add(void *conn, const void *message)
+{
+	const struct req_lib_cmap_track_add *req_lib_cmap_track_add = message;
+	struct res_lib_cmap_track_add res_lib_cmap_track_add;
+	cs_error_t ret;
+	cmap_track_handle_t handle;
+	icmap_track_t track;
+	icmap_track_t *hdb_track;
+	struct cmap_track_user_data *cmap_track_user_data;
+	const char *key_name;
+
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+
+	cmap_track_user_data = malloc(sizeof(*cmap_track_user_data));
+	if (cmap_track_user_data == NULL) {
+		ret = CS_ERR_NO_MEMORY;
+
+		goto reply_send;
+	}
+	memset(cmap_track_user_data, 0, sizeof(*cmap_track_user_data));
+
+	if (req_lib_cmap_track_add->key_name.length > 0) {
+		key_name = (char *)req_lib_cmap_track_add->key_name.value;
+	} else {
+		key_name = NULL;
+	}
+
+	ret = icmap_track_add(key_name,
+			req_lib_cmap_track_add->track_type,
+			cmap_notify_fn,
+			cmap_track_user_data,
+			&track);
+	if (ret != CS_OK) {
+		free(cmap_track_user_data);
+
+		goto reply_send;
+	}
+
+	ret = hdb_error_to_cs(hdb_handle_create(&conn_info->track_db, sizeof(track), &handle));
+	if (ret != CS_OK) {
+		free(cmap_track_user_data);
+
+		goto reply_send;
+	}
+
+	ret = hdb_error_to_cs(hdb_handle_get(&conn_info->track_db, handle, (void *)&hdb_track));
+	if (ret != CS_OK) {
+		free(cmap_track_user_data);
+
+		goto reply_send;
+	}
+
+	*hdb_track = track;
+	cmap_track_user_data->conn = conn;
+	cmap_track_user_data->track_handle = handle;
+	cmap_track_user_data->track_inst_handle = req_lib_cmap_track_add->track_inst_handle;
+
+	(void)hdb_handle_put (&conn_info->track_db, handle);
+
+reply_send:
+	memset(&res_lib_cmap_track_add, 0, sizeof(res_lib_cmap_track_add));
+	res_lib_cmap_track_add.header.size = sizeof(res_lib_cmap_track_add);
+	res_lib_cmap_track_add.header.id = MESSAGE_RES_CMAP_TRACK_ADD;
+	res_lib_cmap_track_add.header.error = ret;
+	res_lib_cmap_track_add.track_handle = handle;
+
+	api->ipc_response_send(conn, &res_lib_cmap_track_add, sizeof(res_lib_cmap_track_add));
+}
+
+static void message_handler_req_lib_cmap_track_delete(void *conn, const void *message)
+{
+	const struct req_lib_cmap_track_delete *req_lib_cmap_track_delete = message;
+	struct res_lib_cmap_track_delete res_lib_cmap_track_delete;
+	cs_error_t ret;
+	icmap_track_t *track;
+	struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
+	uint64_t track_inst_handle = 0;
+
+	ret = hdb_error_to_cs(hdb_handle_get(&conn_info->track_db,
+				req_lib_cmap_track_delete->track_handle, (void *)&track));
+	if (ret != CS_OK) {
+		goto reply_send;
+	}
+
+	track_inst_handle = ((struct cmap_track_user_data *)icmap_track_get_user_data(*track))->track_inst_handle;
+
+	free(icmap_track_get_user_data(*track));
+
+	ret = icmap_track_delete(*track);
+
+	(void)hdb_handle_put (&conn_info->track_db, req_lib_cmap_track_delete->track_handle);
+	(void)hdb_handle_destroy(&conn_info->track_db, req_lib_cmap_track_delete->track_handle);
+
+reply_send:
+	memset(&res_lib_cmap_track_delete, 0, sizeof(res_lib_cmap_track_delete));
+	res_lib_cmap_track_delete.header.size = sizeof(res_lib_cmap_track_delete);
+	res_lib_cmap_track_delete.header.id = MESSAGE_RES_CMAP_TRACK_DELETE;
+	res_lib_cmap_track_delete.header.error = ret;
+	res_lib_cmap_track_delete.track_inst_handle = track_inst_handle;
+
+	api->ipc_response_send(conn, &res_lib_cmap_track_delete, sizeof(res_lib_cmap_track_delete));
+}