[babeltrace.git] / plugins / component-factory.c

/*
 * component-factory.c
 *
 * Babeltrace Plugin Component Factory
 *
 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <babeltrace/plugin/component-factory.h>
#include <babeltrace/plugin/component-factory-internal.h>
#include <babeltrace/plugin/source-internal.h>
#include <babeltrace/plugin/sink-internal.h>
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/compiler.h>
#include <babeltrace/ref.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <gmodule.h>

#define NATIVE_PLUGIN_SUFFIX ".so"
#define NATIVE_PLUGIN_SUFFIX_LEN sizeof(NATIVE_PLUGIN_SUFFIX)
#define LIBTOOL_PLUGIN_SUFFIX ".la"
#define LIBTOOL_PLUGIN_SUFFIX_LEN sizeof(LIBTOOL_PLUGIN_SUFFIX)
#define PLUGIN_SUFFIX_LEN max_t(size_t, sizeof(NATIVE_PLUGIN_SUFFIX), \
		sizeof(LIBTOOL_PLUGIN_SUFFIX))

/* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */
static
struct dirent *alloc_dirent(const char *path)
{
	size_t len;
	long name_max;
	struct dirent *entry;

	name_max = pathconf(path, _PC_NAME_MAX);
	if (name_max == -1) {
		name_max = PATH_MAX;
	}
	len = offsetof(struct dirent, d_name) + name_max + 1;
	entry = zmalloc(len);
	return entry;
}

static
enum bt_component_factory_status
bt_component_factory_load_file(struct bt_component_factory *factory,
		const char *path)
{
	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;
	enum bt_component_status component_status;
	size_t path_len;
	GModule *module;
	struct bt_plugin *plugin;
	bool is_libtool_wrapper = false, is_shared_object = false;

	if (!factory || !path) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

	path_len = strlen(path);
	if (path_len <= PLUGIN_SUFFIX_LEN) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

	path_len++;
	/*
	 * Check if the file ends with a known plugin file type suffix (i.e. .so
	 * or .la on Linux).
	 */
	is_libtool_wrapper = !strncmp(LIBTOOL_PLUGIN_SUFFIX,
			path + path_len - LIBTOOL_PLUGIN_SUFFIX_LEN,
			LIBTOOL_PLUGIN_SUFFIX_LEN);
	is_shared_object = !strncmp(NATIVE_PLUGIN_SUFFIX,
			path + path_len - NATIVE_PLUGIN_SUFFIX_LEN,
			NATIVE_PLUGIN_SUFFIX_LEN);
	if (!is_shared_object && !is_libtool_wrapper) {
		/* Name indicates that this is not a plugin file. */
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

	module = g_module_open(path, 0);
	if (!module) {
		printf_error("Module open error: %s", g_module_error());
		ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
		goto end;
	}

	/* Load plugin and make sure it defines the required entry points */
	plugin = bt_plugin_create(module);
	if (!plugin) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL_PLUGIN;
		if (!g_module_close(module)) {
			printf_error("Module close error: %s",
				g_module_error());
		}
		goto end;
	}

	component_status = bt_plugin_register_component_classes(plugin,
			factory);
	if (component_status != BT_COMPONENT_STATUS_OK) {
		switch (component_status) {
		case BT_COMPONENT_STATUS_NOMEM:
			ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
			break;
		default:
			ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
			break;
		}

		BT_PUT(plugin);
		goto end;
	}
	g_ptr_array_add(factory->plugins, plugin);
end:
	return ret;
}

static
enum bt_component_factory_status
bt_component_factory_load_dir_recursive(struct bt_component_factory *factory,
		const char *path)
{
	DIR *directory = NULL;
	struct dirent *entry = NULL, *result = NULL;
	char *file_path = NULL;
	size_t path_len = strlen(path);
	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;

	if (path_len >= PATH_MAX) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

	entry = alloc_dirent(path);
	if (!entry) {
		ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
		goto end;
	}

	file_path = zmalloc(PATH_MAX);
	if (!file_path) {
		ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
		goto end;
	}

	strncpy(file_path, path, path_len);
	/* Append a trailing '/' to the path */
	if (file_path[path_len - 1] != '/') {
		file_path[path_len++] = '/';
	}

	directory = opendir(file_path);
	if (!directory) {
		perror("Failed to open plug-in directory");
		ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
		goto end;
	}

	/* Recursively walk directory */
	while (!readdir_r(directory, entry, &result) && result) {
		struct stat st;
		int stat_ret;
		size_t file_name_len;

		if (result->d_name[0] == '.') {
			/* Skip hidden files, . and .. */
			continue;
		}

		file_name_len = strlen(result->d_name);

		if (path_len + file_name_len >= PATH_MAX) {
			continue;
		}

		strncpy(file_path + path_len, result->d_name, file_name_len);
		file_path[path_len + file_name_len] = '\0';

		stat_ret = stat(file_path, &st);
		if (stat_ret < 0) {
			/* Continue to next file / directory. */
			printf_perror("Failed to stat() plugin file");
			continue;
		}

		if (S_ISDIR(st.st_mode)) {
			ret = bt_component_factory_load_dir_recursive(factory,
					file_path);
			if (ret != BT_COMPONENT_FACTORY_STATUS_OK) {
				goto end;
			}
		} else if (S_ISREG(st.st_mode)) {
		        bt_component_factory_load_file(factory, file_path);
		}
	}
end:
	if (directory) {
		if (closedir(directory)) {
			/*
			 * We don't want to override the error since there is
			 * nothing could do.
			 */
		        perror("Failed to close plug-in directory");
		}
	}
	free(entry);
	free(file_path);
	return ret;
}

static
void bt_component_factory_destroy(struct bt_object *obj)
{
	struct bt_component_factory *factory = NULL;

	assert(obj);
	factory = container_of(obj, struct bt_component_factory, base);

	if (factory->plugins) {
		g_ptr_array_free(factory->plugins, TRUE);
	}
	if (factory->component_classes) {
		g_ptr_array_free(factory->component_classes, TRUE);
	}
	g_free(factory);
}

struct bt_component_factory *bt_component_factory_create(void)
{
	struct bt_component_factory *factory;

	factory = g_new0(struct bt_component_factory, 1);
	if (!factory) {
		goto end;
	}

	bt_object_init(factory, bt_component_factory_destroy);
	factory->plugins = g_ptr_array_new_with_free_func(
		(GDestroyNotify) bt_put);
	if (!factory->plugins) {
		goto error;
	}
	factory->component_classes = g_ptr_array_new_with_free_func(
		(GDestroyNotify) bt_put);
	if (!factory->component_classes) {
		goto error;
	}
end:
	return factory;
error:
        BT_PUT(factory);
	return factory;
}

struct bt_object *bt_component_factory_get_components(
		struct bt_component_factory *factory)
{
	assert(0);
	return NULL;
}

enum bt_component_factory_status bt_component_factory_load(
		struct bt_component_factory *factory, const char *path)
{
	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;

	if (!factory || !path) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

	if (!g_file_test(path, G_FILE_TEST_EXISTS)) {
		ret = BT_COMPONENT_FACTORY_STATUS_NOENT;
		goto end;
	}

	if (g_file_test(path, G_FILE_TEST_IS_DIR)) {
		ret = bt_component_factory_load_dir_recursive(factory, path);
	} else if (g_file_test(path, G_FILE_TEST_IS_REGULAR) ||
			g_file_test(path, G_FILE_TEST_IS_SYMLINK)) {
		ret = bt_component_factory_load_file(factory, path);
	} else {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}
end:
	return ret;
}

enum bt_component_factory_status
bt_component_factory_register_source_component_class(
		struct bt_component_factory *factory, const char *name,
		bt_component_source_init_cb init)
{
	assert(0);
	return BT_COMPONENT_FACTORY_STATUS_ERROR;
}

enum bt_component_factory_status
bt_component_factory_register_sink_component_class(
		struct bt_component_factory *factory, const char *name,
		bt_component_sink_init_cb init)
{
	struct bt_component_class *class;
	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;

	if (!factory || !name || !init) {
		ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
		goto end;
	}

end:
	return ret;
}
Commit	Line	Data
f3e4505b JG	1	/*
	2	* component-factory.c
	3	*
	4	* Babeltrace Plugin Component Factory
	5	*
	6	* Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	7	*
	8	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	23	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	24	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	26	* SOFTWARE.
	27	*/
	28
	29	#include <babeltrace/plugin/component-factory.h>
	30	#include <babeltrace/plugin/component-factory-internal.h>
92893b7b JG	31	#include <babeltrace/plugin/source-internal.h>
92893b7b JG	32	#include <babeltrace/plugin/sink-internal.h>
f3e4505b JG	33	#include <babeltrace/babeltrace-internal.h>
f3e4505b JG	34	#include <babeltrace/compiler.h>
b8a06801	35	#include <babeltrace/ref.h>
f3e4505b JG	36	#include <unistd.h>
	37	#include <stdlib.h>
	38	#include <sys/stat.h>
fb2dcc52	39	#include <gmodule.h>
f3e4505b JG	40
	41	#define NATIVE_PLUGIN_SUFFIX ".so"
	42	#define NATIVE_PLUGIN_SUFFIX_LEN sizeof(NATIVE_PLUGIN_SUFFIX)
	43	#define LIBTOOL_PLUGIN_SUFFIX ".la"
	44	#define LIBTOOL_PLUGIN_SUFFIX_LEN sizeof(LIBTOOL_PLUGIN_SUFFIX)
73299554 JG	45	#define PLUGIN_SUFFIX_LEN max_t(size_t, sizeof(NATIVE_PLUGIN_SUFFIX), \
73299554 JG	46	sizeof(LIBTOOL_PLUGIN_SUFFIX))
f3e4505b	47
f3e4505b JG	48	/* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */
	49	static
	50	struct dirent alloc_dirent(const char path)
	51	{
	52	size_t len;
	53	long name_max;
	54	struct dirent *entry;
	55
	56	name_max = pathconf(path, _PC_NAME_MAX);
	57	if (name_max == -1) {
	58	name_max = PATH_MAX;
	59	}
	60	len = offsetof(struct dirent, d_name) + name_max + 1;
	61	entry = zmalloc(len);
	62	return entry;
	63	}
	64
	65	static
	66	enum bt_component_factory_status
	67	bt_component_factory_load_file(struct bt_component_factory *factory,
	68	const char *path)
	69	{
	70	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;
fb2dcc52	71	enum bt_component_status component_status;
f3e4505b JG	72	size_t path_len;
f3e4505b JG	73	GModule *module;
fb2dcc52	74	struct bt_plugin *plugin;
92893b7b	75	bool is_libtool_wrapper = false, is_shared_object = false;
f3e4505b JG	76
	77	if (!factory \|\| !path) {
	78	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
	79	goto end;
	80	}
	81
	82	path_len = strlen(path);
	83	if (path_len <= PLUGIN_SUFFIX_LEN) {
73299554	84	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
f3e4505b JG	85	goto end;
	86	}
	87
	88	path_len++;
	89	/*
	90	* Check if the file ends with a known plugin file type suffix (i.e. .so
	91	* or .la on Linux).
	92	*/
92893b7b	93	is_libtool_wrapper = !strncmp(LIBTOOL_PLUGIN_SUFFIX,
b8a06801	94	path + path_len - LIBTOOL_PLUGIN_SUFFIX_LEN,
92893b7b JG	95	LIBTOOL_PLUGIN_SUFFIX_LEN);
	96	is_shared_object = !strncmp(NATIVE_PLUGIN_SUFFIX,
	97	path + path_len - NATIVE_PLUGIN_SUFFIX_LEN,
	98	NATIVE_PLUGIN_SUFFIX_LEN);
	99	if (!is_shared_object && !is_libtool_wrapper) {
73299554 JG	100	/* Name indicates that this is not a plugin file. */
73299554 JG	101	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
f3e4505b JG	102	goto end;
	103	}
	104
	105	module = g_module_open(path, 0);
	106	if (!module) {
	107	printf_error("Module open error: %s", g_module_error());
73299554	108	ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
f3e4505b JG	109	goto end;
	110	}
	111
fb2dcc52 JG	112	/* Load plugin and make sure it defines the required entry points */
fb2dcc52 JG	113	plugin = bt_plugin_create(module);
73299554	114	if (!plugin) {
fb2dcc52	115	ret = BT_COMPONENT_FACTORY_STATUS_INVAL_PLUGIN;
73299554 JG	116	if (!g_module_close(module)) {
73299554 JG	117	printf_error("Module close error: %s",
fb2dcc52 JG	118	g_module_error());
	119	}
	120	goto end;
	121	}
	122
	123	component_status = bt_plugin_register_component_classes(plugin,
b8a06801	124	factory);
fb2dcc52 JG	125	if (component_status != BT_COMPONENT_STATUS_OK) {
	126	switch (component_status) {
	127	case BT_COMPONENT_STATUS_NOMEM:
	128	ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
	129	break;
	130	default:
	131	ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
	132	break;
73299554	133	}
b8a06801 JG	134
b8a06801 JG	135	BT_PUT(plugin);
73299554 JG	136	goto end;
73299554 JG	137	}
fb2dcc52	138	g_ptr_array_add(factory->plugins, plugin);
f3e4505b JG	139	end:
	140	return ret;
	141	}
	142
	143	static
	144	enum bt_component_factory_status
	145	bt_component_factory_load_dir_recursive(struct bt_component_factory *factory,
	146	const char *path)
	147	{
	148	DIR *directory = NULL;
	149	struct dirent entry = NULL, result = NULL;
	150	char *file_path = NULL;
	151	size_t path_len = strlen(path);
	152	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;
	153
	154	if (path_len >= PATH_MAX) {
	155	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
	156	goto end;
	157	}
	158
	159	entry = alloc_dirent(path);
	160	if (!entry) {
	161	ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
	162	goto end;
	163	}
	164
	165	file_path = zmalloc(PATH_MAX);
	166	if (!file_path) {
	167	ret = BT_COMPONENT_FACTORY_STATUS_NOMEM;
	168	goto end;
	169	}
	170
	171	strncpy(file_path, path, path_len);
	172	/* Append a trailing '/' to the path */
	173	if (file_path[path_len - 1] != '/') {
	174	file_path[path_len++] = '/';
	175	}
	176
33bceaf8 JG	177	directory = opendir(file_path);
	178	if (!directory) {
	179	perror("Failed to open plug-in directory");
	180	ret = BT_COMPONENT_FACTORY_STATUS_ERROR;
	181	goto end;
	182	}
	183
f3e4505b JG	184	/* Recursively walk directory */
	185	while (!readdir_r(directory, entry, &result) && result) {
	186	struct stat st;
	187	int stat_ret;
33bceaf8 JG	188	size_t file_name_len;
	189
	190	if (result->d_name[0] == '.') {
	191	/* Skip hidden files, . and .. */
	192	continue;
	193	}
	194
	195	file_name_len = strlen(result->d_name);
f3e4505b JG	196
	197	if (path_len + file_name_len >= PATH_MAX) {
	198	continue;
	199	}
	200
	201	strncpy(file_path + path_len, result->d_name, file_name_len);
	202	file_path[path_len + file_name_len] = '\0';
	203
	204	stat_ret = stat(file_path, &st);
	205	if (stat_ret < 0) {
	206	/* Continue to next file / directory. */
	207	printf_perror("Failed to stat() plugin file");
	208	continue;
	209	}
	210
	211	if (S_ISDIR(st.st_mode)) {
	212	ret = bt_component_factory_load_dir_recursive(factory,
b8a06801	213	file_path);
f3e4505b JG	214	if (ret != BT_COMPONENT_FACTORY_STATUS_OK) {
	215	goto end;
	216	}
	217	} else if (S_ISREG(st.st_mode)) {
73299554	218	bt_component_factory_load_file(factory, file_path);
f3e4505b JG	219	}
	220	}
	221	end:
33bceaf8 JG	222	if (directory) {
	223	if (closedir(directory)) {
	224	/*
	225	* We don't want to override the error since there is
	226	* nothing could do.
	227	*/
	228	perror("Failed to close plug-in directory");
	229	}
	230	}
f3e4505b JG	231	free(entry);
	232	free(file_path);
	233	return ret;
	234	}
	235
b8a06801 JG	236	static
b8a06801 JG	237	void bt_component_factory_destroy(struct bt_object *obj)
f3e4505b	238	{
b8a06801 JG	239	struct bt_component_factory *factory = NULL;
	240
	241	assert(obj);
	242	factory = container_of(obj, struct bt_component_factory, base);
f3e4505b	243
fb2dcc52 JG	244	if (factory->plugins) {
	245	g_ptr_array_free(factory->plugins, TRUE);
	246	}
92893b7b JG	247	if (factory->component_classes) {
92893b7b JG	248	g_ptr_array_free(factory->component_classes, TRUE);
fb2dcc52	249	}
f3e4505b JG	250	g_free(factory);
	251	}
	252
b8a06801	253	struct bt_component_factory *bt_component_factory_create(void)
f3e4505b JG	254	{
	255	struct bt_component_factory *factory;
	256
	257	factory = g_new0(struct bt_component_factory, 1);
	258	if (!factory) {
	259	goto end;
	260	}
	261
b8a06801	262	bt_object_init(factory, bt_component_factory_destroy);
fb2dcc52	263	factory->plugins = g_ptr_array_new_with_free_func(
b8a06801	264	(GDestroyNotify) bt_put);
73299554	265	if (!factory->plugins) {
f3e4505b JG	266	goto error;
f3e4505b JG	267	}
92893b7b	268	factory->component_classes = g_ptr_array_new_with_free_func(
b8a06801	269	(GDestroyNotify) bt_put);
92893b7b	270	if (!factory->component_classes) {
fb2dcc52 JG	271	goto error;
fb2dcc52 JG	272	}
f3e4505b JG	273	end:
	274	return factory;
	275	error:
b8a06801 JG	276	BT_PUT(factory);
b8a06801 JG	277	return factory;
f3e4505b JG	278	}
f3e4505b JG	279
92893b7b JG	280	struct bt_object *bt_component_factory_get_components(
	281	struct bt_component_factory *factory)
	282	{
	283	assert(0);
	284	return NULL;
	285	}
	286
f3e4505b JG	287	enum bt_component_factory_status bt_component_factory_load(
	288	struct bt_component_factory factory, const char path)
	289	{
	290	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;
f3e4505b JG	291
	292	if (!factory \|\| !path) {
	293	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
	294	goto end;
	295	}
	296
b8a06801 JG	297	if (!g_file_test(path, G_FILE_TEST_EXISTS)) {
	298	ret = BT_COMPONENT_FACTORY_STATUS_NOENT;
	299	goto end;
f3e4505b JG	300	}
f3e4505b JG	301
b8a06801	302	if (g_file_test(path, G_FILE_TEST_IS_DIR)) {
f3e4505b	303	ret = bt_component_factory_load_dir_recursive(factory, path);
b8a06801 JG	304	} else if (g_file_test(path, G_FILE_TEST_IS_REGULAR) \|\|
b8a06801 JG	305	g_file_test(path, G_FILE_TEST_IS_SYMLINK)) {
f3e4505b	306	ret = bt_component_factory_load_file(factory, path);
b8a06801 JG	307	} else {
	308	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
	309	goto end;
f3e4505b JG	310	}
f3e4505b JG	311	end:
f3e4505b JG	312	return ret;
f3e4505b JG	313	}
92893b7b JG	314
	315	enum bt_component_factory_status
	316	bt_component_factory_register_source_component_class(
	317	struct bt_component_factory factory, const char name,
	318	bt_component_source_init_cb init)
	319	{
	320	assert(0);
	321	return BT_COMPONENT_FACTORY_STATUS_ERROR;
	322	}
	323
	324	enum bt_component_factory_status
	325	bt_component_factory_register_sink_component_class(
	326	struct bt_component_factory factory, const char name,
	327	bt_component_sink_init_cb init)
	328	{
	329	struct bt_component_class *class;
	330	enum bt_component_factory_status ret = BT_COMPONENT_FACTORY_STATUS_OK;
	331
	332	if (!factory \|\| !name \|\| !init) {
	333	ret = BT_COMPONENT_FACTORY_STATUS_INVAL;
	334	goto end;
	335	}
	336
92893b7b JG	337	end:
	338	return ret;
	339	}