1 // SPDX-License-Identifier: GPL-2.0
55 	switch (entry->type) {  in tb_property_entry_valid()
59 		if (entry->length > block_len)  in tb_property_entry_valid()
61 		if (entry->value + entry->length > block_len)  in tb_property_entry_valid()
66 		if (entry->length != 1)  in tb_property_entry_valid()
88 	strcpy(property->key, key);  in tb_property_alloc()
89 	property->type = type;  in tb_property_alloc()
90 	INIT_LIST_HEAD(&property->list);  in tb_property_alloc()
108 	property = tb_property_alloc(key, entry->type);  in tb_property_parse()
112 	property->length = entry->length;  in tb_property_parse()
114 	switch (property->type) {  in tb_property_parse()
116 		dir = __tb_property_parse_dir(block, block_len, entry->value,  in tb_property_parse()
117 					      entry->length, false);  in tb_property_parse()
122 		property->value.dir = dir;  in tb_property_parse()
126 		property->value.data = kcalloc(property->length, sizeof(u32),  in tb_property_parse()
128 		if (!property->value.data) {  in tb_property_parse()
132 		parse_dwdata(property->value.data, block + entry->value,  in tb_property_parse()
133 			     entry->length);  in tb_property_parse()
137 		property->value.text = kcalloc(property->length, sizeof(u32),  in tb_property_parse()
139 		if (!property->value.text) {  in tb_property_parse()
143 		parse_dwdata(property->value.text, block + entry->value,  in tb_property_parse()
144 			     entry->length);  in tb_property_parse()
146 		property->value.text[property->length * 4 - 1] = '\0';  in tb_property_parse()
150 		property->value.immediate = entry->value;  in tb_property_parse()
154 		property->type = TB_PROPERTY_TYPE_UNKNOWN;  in tb_property_parse()
177 		dir->uuid = kmemdup(&block[dir_offset], sizeof(*dir->uuid),  in __tb_property_parse_dir()
179 		if (!dir->uuid) {  in __tb_property_parse_dir()
184 		content_len = dir_len - 4; /* Length includes UUID */  in __tb_property_parse_dir()
190 	INIT_LIST_HEAD(&dir->properties);  in __tb_property_parse_dir()
201 		list_add_tail(&property->list, &dir->properties);  in __tb_property_parse_dir()
208  * tb_property_parse_dir() - Parses properties from given property block
226 	if (rootdir->magic != TB_PROPERTY_ROOTDIR_MAGIC)  in tb_property_parse_dir()
228 	if (rootdir->length > block_len)  in tb_property_parse_dir()
231 	return __tb_property_parse_dir(block, block_len, 0, rootdir->length,  in tb_property_parse_dir()
236  * tb_property_create_dir() - Creates new property directory
250 	INIT_LIST_HEAD(&dir->properties);  in tb_property_create_dir()
252 		dir->uuid = kmemdup(uuid, sizeof(*dir->uuid), GFP_KERNEL);  in tb_property_create_dir()
253 		if (!dir->uuid) {  in tb_property_create_dir()
265 	switch (property->type) {  in tb_property_free()
267 		tb_property_free_dir(property->value.dir);  in tb_property_free()
271 		kfree(property->value.data);  in tb_property_free()
275 		kfree(property->value.text);  in tb_property_free()
286  * tb_property_free_dir() - Release memory allocated for property directory
300 	list_for_each_entry_safe(property, tmp, &dir->properties, list) {  in tb_property_free_dir()
301 		list_del(&property->list);  in tb_property_free_dir()
304 	kfree(dir->uuid);  in tb_property_free_dir()
315 	if (dir->uuid)  in tb_property_dir_length()
316 		len += sizeof(*dir->uuid) / 4;  in tb_property_dir_length()
320 	list_for_each_entry(property, &dir->properties, list) {  in tb_property_dir_length()
323 		switch (property->type) {  in tb_property_dir_length()
327 					property->value.dir, recurse, data_len);  in tb_property_dir_length()
337 				*data_len += property->length;  in tb_property_dir_length()
362 	 * +----------+ <-- start_offset  in __tb_property_format_dir()
363 	 * |  header  | <-- root directory header  in __tb_property_format_dir()
364 	 * +----------+ ---  in __tb_property_format_dir()
365 	 * |  entry 0 | -^--------------------.  in __tb_property_format_dir()
366 	 * +----------+  |                    |  in __tb_property_format_dir()
367 	 * |  entry 1 | -|--------------------|--.  in __tb_property_format_dir()
368 	 * +----------+  |                    |  |  in __tb_property_format_dir()
369 	 * |  entry 2 | -|-----------------.  |  |  in __tb_property_format_dir()
370 	 * +----------+  |                 |  |  |  in __tb_property_format_dir()
374 	 * +----------+  |                 |  |  |  in __tb_property_format_dir()
376 	 * +----------+ <-- data_offset    |  |  |  in __tb_property_format_dir()
377 	 * |  data 0  | <------------------|--'  |  in __tb_property_format_dir()
378 	 * +----------+                    |     |  in __tb_property_format_dir()
379 	 * |  data 1  | <------------------|-----'  in __tb_property_format_dir()
380 	 * +----------+                    |  in __tb_property_format_dir()
382 	 * +----------+ <-- dir_end <------'  in __tb_property_format_dir()
383 	 * |   UUID   | <-- directory UUID (child directory)  in __tb_property_format_dir()
384 	 * +----------+  in __tb_property_format_dir()
386 	 * +----------+  in __tb_property_format_dir()
388 	 * +----------+  in __tb_property_format_dir()
392 	 * +----------+  in __tb_property_format_dir()
394 	 * +----------+  in __tb_property_format_dir()
396 	 * +----------+  in __tb_property_format_dir()
407 		return -EINVAL;  in __tb_property_format_dir()
409 		return -EINVAL;  in __tb_property_format_dir()
412 	if (dir->uuid) {  in __tb_property_format_dir()
416 		memcpy(pe->uuid, dir->uuid, sizeof(pe->uuid));  in __tb_property_format_dir()
417 		entry = pe->entries;  in __tb_property_format_dir()
422 		re->magic = TB_PROPERTY_ROOTDIR_MAGIC;  in __tb_property_format_dir()
423 		re->length = dir_len - sizeof(*re) / 4;  in __tb_property_format_dir()
424 		entry = re->entries;  in __tb_property_format_dir()
427 	list_for_each_entry(property, &dir->properties, list) {  in __tb_property_format_dir()
430 		format_dwdata(entry, property->key, 2);  in __tb_property_format_dir()
431 		entry->type = property->type;  in __tb_property_format_dir()
433 		switch (property->type) {  in __tb_property_format_dir()
435 			child = property->value.dir;  in __tb_property_format_dir()
440 			entry->length = tb_property_dir_length(child, false,  in __tb_property_format_dir()
442 			entry->value = dir_end;  in __tb_property_format_dir()
447 			format_dwdata(&block[data_offset], property->value.data,  in __tb_property_format_dir()
448 				      property->length);  in __tb_property_format_dir()
449 			entry->length = property->length;  in __tb_property_format_dir()
450 			entry->value = data_offset;  in __tb_property_format_dir()
451 			data_offset += entry->length;  in __tb_property_format_dir()
455 			format_dwdata(&block[data_offset], property->value.text,  in __tb_property_format_dir()
456 				      property->length);  in __tb_property_format_dir()
457 			entry->length = property->length;  in __tb_property_format_dir()
458 			entry->value = data_offset;  in __tb_property_format_dir()
459 			data_offset += entry->length;  in __tb_property_format_dir()
463 			entry->length = property->length;  in __tb_property_format_dir()
464 			entry->value = property->value.immediate;  in __tb_property_format_dir()
478  * tb_property_format_dir() - Formats directory to the packed XDomain format
505  * tb_property_copy_dir() - Take a deep copy of directory
508  * This function takes a deep copy of @dir and returns back the copy. In
520 	d = tb_property_create_dir(dir->uuid);  in tb_property_copy_dir()
524 	list_for_each_entry(property, &dir->properties, list) {  in tb_property_copy_dir()
527 		p = tb_property_alloc(property->key, property->type);  in tb_property_copy_dir()
531 		p->length = property->length;  in tb_property_copy_dir()
533 		switch (property->type) {  in tb_property_copy_dir()
535 			p->value.dir = tb_property_copy_dir(property->value.dir);  in tb_property_copy_dir()
536 			if (!p->value.dir)  in tb_property_copy_dir()
541 			p->value.data = kmemdup(property->value.data,  in tb_property_copy_dir()
542 						property->length * 4,  in tb_property_copy_dir()
544 			if (!p->value.data)  in tb_property_copy_dir()
549 			p->value.text = kzalloc(p->length * 4, GFP_KERNEL);  in tb_property_copy_dir()
550 			if (!p->value.text)  in tb_property_copy_dir()
552 			strcpy(p->value.text, property->value.text);  in tb_property_copy_dir()
556 			p->value.immediate = property->value.immediate;  in tb_property_copy_dir()
563 		list_add_tail(&p->list, &d->properties);  in tb_property_copy_dir()
576  * tb_property_add_immediate() - Add immediate property to directory
587 		return -EINVAL;  in tb_property_add_immediate()
591 		return -ENOMEM;  in tb_property_add_immediate()
593 	property->length = 1;  in tb_property_add_immediate()
594 	property->value.immediate = value;  in tb_property_add_immediate()
596 	list_add_tail(&property->list, &parent->properties);  in tb_property_add_immediate()
602  * tb_property_add_data() - Adds arbitrary data property to directory
618 		return -EINVAL;  in tb_property_add_data()
622 		return -ENOMEM;  in tb_property_add_data()
624 	property->length = size / 4;  in tb_property_add_data()
625 	property->value.data = kzalloc(size, GFP_KERNEL);  in tb_property_add_data()
626 	if (!property->value.data) {  in tb_property_add_data()
628 		return -ENOMEM;  in tb_property_add_data()
631 	memcpy(property->value.data, buf, buflen);  in tb_property_add_data()
633 	list_add_tail(&property->list, &parent->properties);  in tb_property_add_data()
639  * tb_property_add_text() - Adds string property to directory
654 		return -EINVAL;  in tb_property_add_text()
658 		return -ENOMEM;  in tb_property_add_text()
660 	property->length = size / 4;  in tb_property_add_text()
661 	property->value.text = kzalloc(size, GFP_KERNEL);  in tb_property_add_text()
662 	if (!property->value.text) {  in tb_property_add_text()
664 		return -ENOMEM;  in tb_property_add_text()
667 	strcpy(property->value.text, text);  in tb_property_add_text()
669 	list_add_tail(&property->list, &parent->properties);  in tb_property_add_text()
675  * tb_property_add_dir() - Adds a directory to the parent directory
686 		return -EINVAL;  in tb_property_add_dir()
690 		return -ENOMEM;  in tb_property_add_dir()
692 	property->value.dir = dir;  in tb_property_add_dir()
694 	list_add_tail(&property->list, &parent->properties);  in tb_property_add_dir()
700  * tb_property_remove() - Removes property from a parent directory
704  * touch the object after call to this function.
708 	list_del(&property->list);  in tb_property_remove()
714  * tb_property_find() - Find a property from a directory
720  * into sub-directories. Returns %NULL if the property was not found.
727 	list_for_each_entry(property, &dir->properties, list) {  in tb_property_find()
728 		if (property->type == type && !strcmp(property->key, key))  in tb_property_find()
737  * tb_property_get_next() - Get next property from directory
745 		if (list_is_last(&prev->list, &dir->properties))  in tb_property_get_next()
749 	return list_first_entry_or_null(&dir->properties, struct tb_property,  in tb_property_get_next()