[babeltrace.git] / lib / ctf-ir / attributes.c

/*
 * attributes.c
 *
 * Babeltrace CTF IR - Attributes
 *
 * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
 * Copyright (c) 2015 Philippe Proulx <pproulx@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.
 */

#define BT_LOG_TAG "ATTRS"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/ref.h>
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/values.h>
#include <babeltrace/values-internal.h>
#include <inttypes.h>
#include <babeltrace/compat/string-internal.h>
#include <babeltrace/assert-internal.h>

#define BT_ATTR_NAME_INDEX		0
#define BT_ATTR_VALUE_INDEX		1

BT_HIDDEN
struct bt_value *bt_attributes_create(void)
{
	struct bt_value *attr_obj;

	/*
	 * Attributes: array value object of array value objects, each one
	 * containing two entries: a string value object (attributes
	 * field name), and a value object (attributes field value).
	 *
	 * Example (JSON representation):
	 *
	 *     [
	 *         ["hostname", "eeppdesk"],
	 *         ["sysname", "Linux"],
	 *         ["tracer_major", 2],
	 *         ["tracer_minor", 5]
	 *     ]
	 */
	BT_LOGD_STR("Creating attributes object.");
	attr_obj = bt_value_array_create();
	if (!attr_obj) {
		BT_LOGE_STR("Failed to create array value.");
	} else {
		BT_LOGD("Created attributes object: addr=%p",
			attr_obj);
	}

	return attr_obj;
}

BT_HIDDEN
void bt_attributes_destroy(struct bt_value *attr_obj)
{
	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
	bt_put(attr_obj);
}

BT_HIDDEN
int64_t bt_attributes_get_count(struct bt_value *attr_obj)
{
	return bt_value_array_size(attr_obj);
}

BT_HIDDEN
const char *bt_attributes_get_field_name(struct bt_value *attr_obj,
		uint64_t index)
{
	int rc;
	const char *ret = NULL;
	struct bt_value *attr_field_obj = NULL;
	struct bt_value *attr_field_name_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_value_array_size(attr_obj)) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_value_array_size(attr_obj));
		goto end;
	}

	attr_field_obj = bt_value_array_borrow(attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	attr_field_name_obj = bt_value_array_borrow(attr_field_obj,
		BT_ATTR_NAME_INDEX);
	if (!attr_field_name_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_NAME_INDEX);
		goto end;
	}

	rc = bt_value_string_get(attr_field_name_obj, &ret);
	if (rc) {
		BT_LOGE("Cannot get raw value from string value: value-addr=%p",
			attr_field_name_obj);
		ret = NULL;
	}

end:
	return ret;
}

BT_HIDDEN
struct bt_value *bt_attributes_borrow_field_value(struct bt_value *attr_obj,
		uint64_t index)
{
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		goto end;
	}

	if (index >= bt_value_array_size(attr_obj)) {
		BT_LOGW("Invalid parameter: index is out of bounds: "
			"index=%" PRIu64 ", count=%" PRId64,
			index, bt_value_array_size(attr_obj));
		goto end;
	}

	attr_field_obj = bt_value_array_borrow(attr_obj, index);
	if (!attr_field_obj) {
		BT_LOGE("Cannot get attributes object's array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_obj, index);
		goto end;
	}

	value_obj = bt_value_array_borrow(attr_field_obj,
		BT_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

static
struct bt_value *bt_attributes_borrow_field_by_name(
		struct bt_value *attr_obj, const char *name)
{
	uint64_t i;
	int64_t attr_size;
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_name_obj = NULL;

	attr_size = bt_value_array_size(attr_obj);
	if (attr_size < 0) {
		BT_LOGE("Cannot get array value's size: value-addr=%p",
			attr_obj);
		goto error;
	}

	for (i = 0; i < attr_size; ++i) {
		int ret;
		const char *field_name;

		value_obj = bt_value_array_borrow(attr_obj, i);
		if (!value_obj) {
			BT_LOGE("Cannot get attributes object's array value's element by index: "
				"value-addr=%p, index=%" PRIu64, attr_obj, i);
			goto error;
		}

		attr_field_name_obj = bt_value_array_borrow(value_obj,
			BT_ATTR_NAME_INDEX);
		if (!attr_field_name_obj) {
			BT_LOGE("Cannot get attribute array value's element by index: "
				"value-addr=%p, index=%" PRIu64,
				value_obj, (int64_t) BT_ATTR_NAME_INDEX);
			goto error;
		}

		ret = bt_value_string_get(attr_field_name_obj, &field_name);
		if (ret) {
			BT_LOGE("Cannot get raw value from string value: value-addr=%p",
				attr_field_name_obj);
			goto error;
		}

		if (!strcmp(field_name, name)) {
			break;
		}

		value_obj = NULL;
	}

	return value_obj;

error:
	value_obj = NULL;
	return value_obj;
}

BT_HIDDEN
int bt_attributes_set_field_value(struct bt_value *attr_obj,
		const char *name, struct bt_value *value_obj)
{
	int ret = 0;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj || !name || !value_obj) {
		BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
			"attr-value-addr=%p, name-addr=%p, value-addr=%p",
			attr_obj, name, value_obj);
		ret = -1;
		goto end;
	}

	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
	if (attr_field_obj) {
		ret = bt_value_array_set(attr_field_obj,
			BT_ATTR_VALUE_INDEX, value_obj);
		attr_field_obj = NULL;
		goto end;
	}

	attr_field_obj = bt_value_array_create();
	if (!attr_field_obj) {
		BT_LOGE_STR("Failed to create empty array value.");
		ret = -1;
		goto end;
	}

	ret = bt_value_array_append_string(attr_field_obj, name);
	ret |= bt_value_array_append(attr_field_obj, value_obj);
	if (ret) {
		BT_LOGE("Cannot append elements to array value: addr=%p",
			attr_field_obj);
		goto end;
	}

	ret = bt_value_array_append(attr_obj, attr_field_obj);
	if (ret) {
		BT_LOGE("Cannot append element to array value: "
			"array-value-addr=%p, element-value-addr=%p",
			attr_obj, attr_field_obj);
	}

end:
	bt_put(attr_field_obj);
	return ret;
}

BT_HIDDEN
struct bt_value *bt_attributes_borrow_field_value_by_name(
		struct bt_value *attr_obj, const char *name)
{
	struct bt_value *value_obj = NULL;
	struct bt_value *attr_field_obj = NULL;

	if (!attr_obj || !name) {
		BT_LOGW("Invalid parameter: attributes object or name is NULL: "
			"value-addr=%p, name-addr=%p", attr_obj, name);
		goto end;
	}

	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
	if (!attr_field_obj) {
		BT_LOGD("Cannot find attributes object's field by name: "
			"value-addr=%p, name=\"%s\"", attr_obj, name);
		goto end;
	}

	value_obj = bt_value_array_borrow(attr_field_obj,
		BT_ATTR_VALUE_INDEX);
	if (!value_obj) {
		BT_LOGE("Cannot get attribute array value's element by index: "
			"value-addr=%p, index=%" PRIu64, attr_field_obj,
			(uint64_t) BT_ATTR_VALUE_INDEX);
	}

end:
	return value_obj;
}

BT_HIDDEN
int bt_attributes_freeze(struct bt_value *attr_obj)
{
	uint64_t i;
	int64_t count;
	int ret = 0;

	if (!attr_obj) {
		BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
		ret = -1;
		goto end;
	}

	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
	count = bt_value_array_size(attr_obj);
	BT_ASSERT(count >= 0);

	/*
	 * We do not freeze the array value object itself here, since
	 * internal stuff could need to modify/add attributes. Each
	 * attribute is frozen one by one.
	 */
	for (i = 0; i < count; ++i) {
		struct bt_value *obj = NULL;

		obj = bt_attributes_borrow_field_value(attr_obj, i);
		if (!obj) {
			BT_LOGE("Cannot get attributes object's field value by index: "
				"value-addr=%p, index=%" PRIu64,
				attr_obj, i);
			ret = -1;
			goto end;
		}

		bt_value_freeze(obj);
	}

end:
	return ret;
}
Commit	Line	Data
44e0a4f5 JG	1	/*
	2	* attributes.c
	3	*
	4	* Babeltrace CTF IR - Attributes
	5	*
	6	* Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
	7	* Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a copy
	10	* of this software and associated documentation files (the "Software"), to deal
	11	* in the Software without restriction, including without limitation the rights
	12	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	13	* copies of the Software, and to permit persons to whom the Software is
	14	* furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice shall be included in
	17	* all copies or substantial portions of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	22	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	23	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	24	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	25	* SOFTWARE.
	26	*/
	27
0f5e83e5	28	#define BT_LOG_TAG "ATTRS"
40547d22	29	#include <babeltrace/lib-logging-internal.h>
0f5e83e5	30
9d408fca	31	#include <babeltrace/ref.h>
44e0a4f5	32	#include <babeltrace/babeltrace-internal.h>
dac5c838	33	#include <babeltrace/values.h>
f6ccaed9	34	#include <babeltrace/values-internal.h>
561ad8c1	35	#include <inttypes.h>
ee389f01	36	#include <babeltrace/compat/string-internal.h>
f6ccaed9	37	#include <babeltrace/assert-internal.h>
44e0a4f5	38
50842bdc PP	39	#define BT_ATTR_NAME_INDEX 0
50842bdc PP	40	#define BT_ATTR_VALUE_INDEX 1
44e0a4f5 JG	41
44e0a4f5 JG	42	BT_HIDDEN
50842bdc	43	struct bt_value *bt_attributes_create(void)
44e0a4f5	44	{
561ad8c1 PP	45	struct bt_value *attr_obj;
561ad8c1 PP	46
44e0a4f5	47	/*
dac5c838 PP	48	* Attributes: array value object of array value objects, each one
	49	* containing two entries: a string value object (attributes
	50	* field name), and a value object (attributes field value).
44e0a4f5 JG	51	*
	52	* Example (JSON representation):
	53	*
	54	* [
	55	* ["hostname", "eeppdesk"],
	56	* ["sysname", "Linux"],
	57	* ["tracer_major", 2],
	58	* ["tracer_minor", 5]
	59	* ]
	60	*/
561ad8c1 PP	61	BT_LOGD_STR("Creating attributes object.");
	62	attr_obj = bt_value_array_create();
	63	if (!attr_obj) {
	64	BT_LOGE_STR("Failed to create array value.");
	65	} else {
	66	BT_LOGD("Created attributes object: addr=%p",
	67	attr_obj);
	68	}
	69
	70	return attr_obj;
44e0a4f5 JG	71	}
	72
	73	BT_HIDDEN
50842bdc	74	void bt_attributes_destroy(struct bt_value *attr_obj)
44e0a4f5	75	{
561ad8c1	76	BT_LOGD("Destroying attributes object: addr=%p", attr_obj);
83509119	77	bt_put(attr_obj);
44e0a4f5 JG	78	}
	79
	80	BT_HIDDEN
50842bdc	81	int64_t bt_attributes_get_count(struct bt_value *attr_obj)
44e0a4f5	82	{
dac5c838	83	return bt_value_array_size(attr_obj);
44e0a4f5 JG	84	}
	85
	86	BT_HIDDEN
50842bdc	87	const char bt_attributes_get_field_name(struct bt_value attr_obj,
dcf0cc71	88	uint64_t index)
44e0a4f5 JG	89	{
	90	int rc;
	91	const char *ret = NULL;
dac5c838 PP	92	struct bt_value *attr_field_obj = NULL;
dac5c838 PP	93	struct bt_value *attr_field_name_obj = NULL;
44e0a4f5	94
561ad8c1 PP	95	if (!attr_obj) {
561ad8c1 PP	96	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	97	goto end;
	98	}
	99
f6ccaed9 PP	100	if (index >= bt_value_array_size(attr_obj)) {
	101	BT_LOGW("Invalid parameter: index is out of bounds: "
	102	"index=%" PRIu64 ", count=%" PRId64,
	103	index, bt_value_array_size(attr_obj));
	104	goto end;
	105	}
	106
094ff7c0	107	attr_field_obj = bt_value_array_borrow(attr_obj, index);
44e0a4f5	108	if (!attr_field_obj) {
561ad8c1 PP	109	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	110	"value-addr=%p, index=%" PRIu64, attr_obj, index);
44e0a4f5 JG	111	goto end;
	112	}
	113
094ff7c0	114	attr_field_name_obj = bt_value_array_borrow(attr_field_obj,
50842bdc	115	BT_ATTR_NAME_INDEX);
44e0a4f5	116	if (!attr_field_name_obj) {
561ad8c1 PP	117	BT_LOGE("Cannot get attribute array value's element by index: "
561ad8c1 PP	118	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	119	(uint64_t) BT_ATTR_NAME_INDEX);
44e0a4f5 JG	120	goto end;
	121	}
	122
dac5c838	123	rc = bt_value_string_get(attr_field_name_obj, &ret);
44e0a4f5	124	if (rc) {
561ad8c1 PP	125	BT_LOGE("Cannot get raw value from string value: value-addr=%p",
561ad8c1 PP	126	attr_field_name_obj);
44e0a4f5 JG	127	ret = NULL;
	128	}
	129
	130	end:
44e0a4f5 JG	131	return ret;
	132	}
	133
	134	BT_HIDDEN
094ff7c0	135	struct bt_value bt_attributes_borrow_field_value(struct bt_value attr_obj,
dcf0cc71	136	uint64_t index)
44e0a4f5	137	{
dac5c838 PP	138	struct bt_value *value_obj = NULL;
dac5c838 PP	139	struct bt_value *attr_field_obj = NULL;
44e0a4f5	140
561ad8c1 PP	141	if (!attr_obj) {
561ad8c1 PP	142	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	143	goto end;
	144	}
	145
f6ccaed9 PP	146	if (index >= bt_value_array_size(attr_obj)) {
	147	BT_LOGW("Invalid parameter: index is out of bounds: "
	148	"index=%" PRIu64 ", count=%" PRId64,
	149	index, bt_value_array_size(attr_obj));
	150	goto end;
	151	}
	152
094ff7c0	153	attr_field_obj = bt_value_array_borrow(attr_obj, index);
44e0a4f5	154	if (!attr_field_obj) {
561ad8c1 PP	155	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	156	"value-addr=%p, index=%" PRIu64, attr_obj, index);
44e0a4f5 JG	157	goto end;
	158	}
	159
094ff7c0	160	value_obj = bt_value_array_borrow(attr_field_obj,
50842bdc	161	BT_ATTR_VALUE_INDEX);
561ad8c1 PP	162	if (!value_obj) {
	163	BT_LOGE("Cannot get attribute array value's element by index: "
	164	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	165	(uint64_t) BT_ATTR_VALUE_INDEX);
561ad8c1	166	}
44e0a4f5 JG	167
44e0a4f5 JG	168	end:
44e0a4f5 JG	169	return value_obj;
	170	}
	171
	172	static
094ff7c0	173	struct bt_value *bt_attributes_borrow_field_by_name(
dac5c838	174	struct bt_value attr_obj, const char name)
44e0a4f5	175	{
dcf0cc71 PP	176	uint64_t i;
dcf0cc71 PP	177	int64_t attr_size;
dac5c838 PP	178	struct bt_value *value_obj = NULL;
dac5c838 PP	179	struct bt_value *attr_field_name_obj = NULL;
44e0a4f5	180
dac5c838	181	attr_size = bt_value_array_size(attr_obj);
44e0a4f5	182	if (attr_size < 0) {
561ad8c1 PP	183	BT_LOGE("Cannot get array value's size: value-addr=%p",
561ad8c1 PP	184	attr_obj);
44e0a4f5 JG	185	goto error;
	186	}
	187
	188	for (i = 0; i < attr_size; ++i) {
	189	int ret;
	190	const char *field_name;
	191
094ff7c0	192	value_obj = bt_value_array_borrow(attr_obj, i);
44e0a4f5	193	if (!value_obj) {
561ad8c1 PP	194	BT_LOGE("Cannot get attributes object's array value's element by index: "
561ad8c1 PP	195	"value-addr=%p, index=%" PRIu64, attr_obj, i);
44e0a4f5 JG	196	goto error;
	197	}
	198
094ff7c0 PP	199	attr_field_name_obj = bt_value_array_borrow(value_obj,
094ff7c0 PP	200	BT_ATTR_NAME_INDEX);
44e0a4f5	201	if (!attr_field_name_obj) {
561ad8c1 PP	202	BT_LOGE("Cannot get attribute array value's element by index: "
561ad8c1 PP	203	"value-addr=%p, index=%" PRIu64,
094ff7c0	204	value_obj, (int64_t) BT_ATTR_NAME_INDEX);
44e0a4f5 JG	205	goto error;
	206	}
	207
dac5c838	208	ret = bt_value_string_get(attr_field_name_obj, &field_name);
44e0a4f5	209	if (ret) {
561ad8c1 PP	210	BT_LOGE("Cannot get raw value from string value: value-addr=%p",
561ad8c1 PP	211	attr_field_name_obj);
44e0a4f5 JG	212	goto error;
	213	}
	214
	215	if (!strcmp(field_name, name)) {
44e0a4f5 JG	216	break;
	217	}
	218
094ff7c0	219	value_obj = NULL;
44e0a4f5 JG	220	}
	221
	222	return value_obj;
	223
	224	error:
094ff7c0	225	value_obj = NULL;
44e0a4f5 JG	226	return value_obj;
	227	}
	228
	229	BT_HIDDEN
50842bdc	230	int bt_attributes_set_field_value(struct bt_value *attr_obj,
dac5c838	231	const char name, struct bt_value value_obj)
44e0a4f5 JG	232	{
44e0a4f5 JG	233	int ret = 0;
dac5c838	234	struct bt_value *attr_field_obj = NULL;
44e0a4f5 JG	235
44e0a4f5 JG	236	if (!attr_obj \|\| !name \|\| !value_obj) {
561ad8c1 PP	237	BT_LOGW("Invalid parameter: attributes object, name, or value object is NULL: "
	238	"attr-value-addr=%p, name-addr=%p, value-addr=%p",
	239	attr_obj, name, value_obj);
44e0a4f5 JG	240	ret = -1;
	241	goto end;
	242	}
	243
094ff7c0	244	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
44e0a4f5	245	if (attr_field_obj) {
dac5c838	246	ret = bt_value_array_set(attr_field_obj,
50842bdc	247	BT_ATTR_VALUE_INDEX, value_obj);
094ff7c0	248	attr_field_obj = NULL;
44e0a4f5 JG	249	goto end;
	250	}
	251
dac5c838	252	attr_field_obj = bt_value_array_create();
44e0a4f5	253	if (!attr_field_obj) {
561ad8c1	254	BT_LOGE_STR("Failed to create empty array value.");
44e0a4f5 JG	255	ret = -1;
	256	goto end;
	257	}
	258
dac5c838 PP	259	ret = bt_value_array_append_string(attr_field_obj, name);
dac5c838 PP	260	ret \|= bt_value_array_append(attr_field_obj, value_obj);
44e0a4f5	261	if (ret) {
561ad8c1 PP	262	BT_LOGE("Cannot append elements to array value: addr=%p",
561ad8c1 PP	263	attr_field_obj);
44e0a4f5 JG	264	goto end;
	265	}
	266
dac5c838	267	ret = bt_value_array_append(attr_obj, attr_field_obj);
561ad8c1 PP	268	if (ret) {
	269	BT_LOGE("Cannot append element to array value: "
	270	"array-value-addr=%p, element-value-addr=%p",
	271	attr_obj, attr_field_obj);
	272	}
44e0a4f5 JG	273
44e0a4f5 JG	274	end:
094ff7c0	275	bt_put(attr_field_obj);
44e0a4f5 JG	276	return ret;
	277	}
	278
	279	BT_HIDDEN
094ff7c0	280	struct bt_value *bt_attributes_borrow_field_value_by_name(
dac5c838	281	struct bt_value attr_obj, const char name)
44e0a4f5	282	{
dac5c838 PP	283	struct bt_value *value_obj = NULL;
dac5c838 PP	284	struct bt_value *attr_field_obj = NULL;
44e0a4f5 JG	285
44e0a4f5 JG	286	if (!attr_obj \|\| !name) {
561ad8c1 PP	287	BT_LOGW("Invalid parameter: attributes object or name is NULL: "
561ad8c1 PP	288	"value-addr=%p, name-addr=%p", attr_obj, name);
44e0a4f5 JG	289	goto end;
	290	}
	291
094ff7c0	292	attr_field_obj = bt_attributes_borrow_field_by_name(attr_obj, name);
44e0a4f5	293	if (!attr_field_obj) {
561ad8c1 PP	294	BT_LOGD("Cannot find attributes object's field by name: "
561ad8c1 PP	295	"value-addr=%p, name=\"%s\"", attr_obj, name);
44e0a4f5 JG	296	goto end;
	297	}
	298
094ff7c0	299	value_obj = bt_value_array_borrow(attr_field_obj,
50842bdc	300	BT_ATTR_VALUE_INDEX);
561ad8c1 PP	301	if (!value_obj) {
	302	BT_LOGE("Cannot get attribute array value's element by index: "
	303	"value-addr=%p, index=%" PRIu64, attr_field_obj,
50842bdc	304	(uint64_t) BT_ATTR_VALUE_INDEX);
561ad8c1	305	}
44e0a4f5 JG	306
44e0a4f5 JG	307	end:
44e0a4f5 JG	308	return value_obj;
	309	}
	310
	311	BT_HIDDEN
50842bdc	312	int bt_attributes_freeze(struct bt_value *attr_obj)
44e0a4f5	313	{
dcf0cc71 PP	314	uint64_t i;
dcf0cc71 PP	315	int64_t count;
44e0a4f5 JG	316	int ret = 0;
	317
	318	if (!attr_obj) {
561ad8c1	319	BT_LOGW_STR("Invalid parameter: attributes object is NULL.");
44e0a4f5 JG	320	ret = -1;
	321	goto end;
	322	}
	323
561ad8c1	324	BT_LOGD("Freezing attributes object: value-addr=%p", attr_obj);
dac5c838	325	count = bt_value_array_size(attr_obj);
f6ccaed9	326	BT_ASSERT(count >= 0);
44e0a4f5 JG	327
44e0a4f5 JG	328	/*
dac5c838 PP	329	* We do not freeze the array value object itself here, since
	330	* internal stuff could need to modify/add attributes. Each
	331	* attribute is frozen one by one.
44e0a4f5 JG	332	*/
44e0a4f5 JG	333	for (i = 0; i < count; ++i) {
dac5c838	334	struct bt_value *obj = NULL;
44e0a4f5	335
094ff7c0	336	obj = bt_attributes_borrow_field_value(attr_obj, i);
44e0a4f5	337	if (!obj) {
561ad8c1 PP	338	BT_LOGE("Cannot get attributes object's field value by index: "
	339	"value-addr=%p, index=%" PRIu64,
	340	attr_obj, i);
44e0a4f5 JG	341	ret = -1;
	342	goto end;
	343	}
	344
dac5c838	345	bt_value_freeze(obj);
44e0a4f5 JG	346	}
	347
	348	end:
44e0a4f5 JG	349	return ret;
44e0a4f5 JG	350	}