[babeltrace.git] / formats / ctf / types / array.c

/*
 * Common Trace Format
 *
 * Array format access functions.
 *
 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
 *
 * Author: Mathieu Desnoyers <mathieu.desnoyers@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/ctf/types.h>

int ctf_array_read(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
	struct definition_array *array_definition =
		container_of(definition, struct definition_array, p);
	struct declaration_array *array_declaration =
		array_definition->declaration;
	struct bt_declaration *elem = array_declaration->elem;
	struct ctf_stream_pos *pos =
		container_of(ppos, struct ctf_stream_pos, parent);

	if (elem->id == CTF_TYPE_INTEGER) {
		struct declaration_integer *integer_declaration =
			container_of(elem, struct declaration_integer, p);

		if (integer_declaration->encoding == CTF_STRING_UTF8
		      || integer_declaration->encoding == CTF_STRING_ASCII) {

			if (integer_declaration->len == CHAR_BIT
			    && integer_declaration->p.alignment == CHAR_BIT) {

				if (!ctf_align_pos(pos, integer_declaration->p.alignment))
					return -EFAULT;
				if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT))
					return -EFAULT;

				g_string_assign(array_definition->string, "");
				g_string_insert_len(array_definition->string,
					0, (char *) ctf_get_pos_addr(pos),
					array_declaration->len);
				if (!ctf_move_pos(pos, array_declaration->len * CHAR_BIT))
					return -EFAULT;
				return 0;
			}
		}
	}
	return bt_array_rw(ppos, definition);
}

int ctf_array_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
	struct definition_array *array_definition =
		container_of(definition, struct definition_array, p);
	struct declaration_array *array_declaration =
		array_definition->declaration;
	struct bt_declaration *elem = array_declaration->elem;
	struct ctf_stream_pos *pos =
		container_of(ppos, struct ctf_stream_pos, parent);

	if (elem->id == CTF_TYPE_INTEGER) {
		struct declaration_integer *integer_declaration =
			container_of(elem, struct declaration_integer, p);

		if (integer_declaration->encoding == CTF_STRING_UTF8
		      || integer_declaration->encoding == CTF_STRING_ASCII) {

			if (integer_declaration->len == CHAR_BIT
			    && integer_declaration->p.alignment == CHAR_BIT) {

				if (!ctf_align_pos(pos, integer_declaration->p.alignment))
					return -EFAULT;
				if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT))
					return -EFAULT;

				memcpy((char *) ctf_get_pos_addr(pos),
					array_definition->string->str,
					array_declaration->len);
				if (!ctf_move_pos(pos, array_declaration->len * CHAR_BIT))
					return -EFAULT;
				return 0;
			}
		}
	}
	return bt_array_rw(ppos, definition);
}
Commit	Line	Data
d06d03db MD	1	/*
	2	* Common Trace Format
	3	*
	4	* Array format access functions.
	5	*
64fa3fec MD	6	* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
	7	*
	8	* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
d06d03db	9	*
ccd7e1c8 MD	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:
d06d03db	16	*
ccd7e1c8 MD	17	* The above copyright notice and this permission notice shall be included in
ccd7e1c8 MD	18	* all copies or substantial portions of the Software.
c462e188 MD	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.
d06d03db MD	27	*/
	28
	29	#include <babeltrace/ctf/types.h>
	30
0d69b916	31	int ctf_array_read(struct bt_stream_pos ppos, struct bt_definition definition)
d06d03db	32	{
81dee1bb MD	33	struct definition_array *array_definition =
	34	container_of(definition, struct definition_array, p);
	35	struct declaration_array *array_declaration =
	36	array_definition->declaration;
ecc54f11	37	struct bt_declaration *elem = array_declaration->elem;
81dee1bb MD	38	struct ctf_stream_pos *pos =
	39	container_of(ppos, struct ctf_stream_pos, parent);
	40
	41	if (elem->id == CTF_TYPE_INTEGER) {
	42	struct declaration_integer *integer_declaration =
	43	container_of(elem, struct declaration_integer, p);
	44
	45	if (integer_declaration->encoding == CTF_STRING_UTF8
	46	\|\| integer_declaration->encoding == CTF_STRING_ASCII) {
	47
	48	if (integer_declaration->len == CHAR_BIT
	49	&& integer_declaration->p.alignment == CHAR_BIT) {
	50
70fd5a51 MD	51	if (!ctf_align_pos(pos, integer_declaration->p.alignment))
70fd5a51 MD	52	return -EFAULT;
81dee1bb MD	53	if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT))
	54	return -EFAULT;
	55
	56	g_string_assign(array_definition->string, "");
	57	g_string_insert_len(array_definition->string,
	58	0, (char *) ctf_get_pos_addr(pos),
	59	array_declaration->len);
70fd5a51 MD	60	if (!ctf_move_pos(pos, array_declaration->len * CHAR_BIT))
70fd5a51 MD	61	return -EFAULT;
81dee1bb MD	62	return 0;
	63	}
	64	}
	65	}
dcaa2e7d	66	return bt_array_rw(ppos, definition);
81dee1bb MD	67	}
81dee1bb MD	68
0d69b916	69	int ctf_array_write(struct bt_stream_pos ppos, struct bt_definition definition)
81dee1bb MD	70	{
	71	struct definition_array *array_definition =
	72	container_of(definition, struct definition_array, p);
	73	struct declaration_array *array_declaration =
	74	array_definition->declaration;
ecc54f11	75	struct bt_declaration *elem = array_declaration->elem;
81dee1bb MD	76	struct ctf_stream_pos *pos =
	77	container_of(ppos, struct ctf_stream_pos, parent);
	78
	79	if (elem->id == CTF_TYPE_INTEGER) {
	80	struct declaration_integer *integer_declaration =
	81	container_of(elem, struct declaration_integer, p);
	82
	83	if (integer_declaration->encoding == CTF_STRING_UTF8
	84	\|\| integer_declaration->encoding == CTF_STRING_ASCII) {
	85
	86	if (integer_declaration->len == CHAR_BIT
	87	&& integer_declaration->p.alignment == CHAR_BIT) {
	88
70fd5a51 MD	89	if (!ctf_align_pos(pos, integer_declaration->p.alignment))
70fd5a51 MD	90	return -EFAULT;
81dee1bb MD	91	if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT))
	92	return -EFAULT;
	93
	94	memcpy((char *) ctf_get_pos_addr(pos),
	95	array_definition->string->str,
	96	array_declaration->len);
70fd5a51 MD	97	if (!ctf_move_pos(pos, array_declaration->len * CHAR_BIT))
70fd5a51 MD	98	return -EFAULT;
81dee1bb MD	99	return 0;
	100	}
	101	}
	102	}
dcaa2e7d	103	return bt_array_rw(ppos, definition);
d06d03db	104	}