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

/*
 * Common Trace Format
 *
 * Sequence 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_sequence_read(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
	struct definition_sequence *sequence_definition =
		container_of(definition, struct definition_sequence, p);
	struct declaration_sequence *sequence_declaration =
		sequence_definition->declaration;
	struct bt_declaration *elem = sequence_declaration->elem;
	struct ctf_stream_pos *pos = ctf_pos(ppos);

	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) {
				uint64_t len = bt_sequence_len(sequence_definition);

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

				g_string_assign(sequence_definition->string, "");
				g_string_insert_len(sequence_definition->string,
					0, (char *) ctf_get_pos_addr(pos), len);
				ctf_move_pos(pos, len * CHAR_BIT);
				return 0;
			}
		}
	}
	return bt_sequence_rw(ppos, definition);
}

int ctf_sequence_write(struct bt_stream_pos *ppos, struct bt_definition *definition)
{
	struct definition_sequence *sequence_definition =
		container_of(definition, struct definition_sequence, p);
	struct declaration_sequence *sequence_declaration =
		sequence_definition->declaration;
	struct bt_declaration *elem = sequence_declaration->elem;
	struct ctf_stream_pos *pos = ctf_pos(ppos);

	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) {
				uint64_t len = bt_sequence_len(sequence_definition);

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

				memcpy((char *) ctf_get_pos_addr(pos),
					sequence_definition->string->str, len);
				ctf_move_pos(pos, len * CHAR_BIT);
				return 0;
			}
		}
	}
	return bt_sequence_rw(ppos, definition);
}
Commit	Line	Data
d06d03db MD	1	/*
	2	* Common Trace Format
	3	*
	4	* Sequence 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_sequence_read(struct bt_stream_pos ppos, struct bt_definition definition)
d06d03db	32	{
81dee1bb MD	33	struct definition_sequence *sequence_definition =
	34	container_of(definition, struct definition_sequence, p);
	35	struct declaration_sequence *sequence_declaration =
	36	sequence_definition->declaration;
ecc54f11	37	struct bt_declaration *elem = sequence_declaration->elem;
46322b33 MD	38	struct ctf_stream_pos *pos = ctf_pos(ppos);
46322b33 MD	39
81dee1bb MD	40	if (elem->id == CTF_TYPE_INTEGER) {
	41	struct declaration_integer *integer_declaration =
	42	container_of(elem, struct declaration_integer, p);
	43
	44	if (integer_declaration->encoding == CTF_STRING_UTF8
	45	\|\| integer_declaration->encoding == CTF_STRING_ASCII) {
	46
	47	if (integer_declaration->len == CHAR_BIT
	48	&& integer_declaration->p.alignment == CHAR_BIT) {
9ffd39fc	49	uint64_t len = bt_sequence_len(sequence_definition);
81dee1bb MD	50
	51	ctf_align_pos(pos, integer_declaration->p.alignment);
	52	if (!ctf_pos_access_ok(pos, len * CHAR_BIT))
	53	return -EFAULT;
	54
	55	g_string_assign(sequence_definition->string, "");
	56	g_string_insert_len(sequence_definition->string,
	57	0, (char *) ctf_get_pos_addr(pos), len);
	58	ctf_move_pos(pos, len * CHAR_BIT);
	59	return 0;
	60	}
	61	}
	62	}
9ffd39fc	63	return bt_sequence_rw(ppos, definition);
81dee1bb MD	64	}
81dee1bb MD	65
0d69b916	66	int ctf_sequence_write(struct bt_stream_pos ppos, struct bt_definition definition)
81dee1bb MD	67	{
	68	struct definition_sequence *sequence_definition =
	69	container_of(definition, struct definition_sequence, p);
	70	struct declaration_sequence *sequence_declaration =
	71	sequence_definition->declaration;
ecc54f11	72	struct bt_declaration *elem = sequence_declaration->elem;
81dee1bb MD	73	struct ctf_stream_pos *pos = ctf_pos(ppos);
	74
	75	if (elem->id == CTF_TYPE_INTEGER) {
	76	struct declaration_integer *integer_declaration =
	77	container_of(elem, struct declaration_integer, p);
	78
	79	if (integer_declaration->encoding == CTF_STRING_UTF8
	80	\|\| integer_declaration->encoding == CTF_STRING_ASCII) {
	81
	82	if (integer_declaration->len == CHAR_BIT
	83	&& integer_declaration->p.alignment == CHAR_BIT) {
9ffd39fc	84	uint64_t len = bt_sequence_len(sequence_definition);
81dee1bb MD	85
	86	ctf_align_pos(pos, integer_declaration->p.alignment);
	87	if (!ctf_pos_access_ok(pos, len * CHAR_BIT))
	88	return -EFAULT;
	89
	90	memcpy((char *) ctf_get_pos_addr(pos),
	91	sequence_definition->string->str, len);
	92	ctf_move_pos(pos, len * CHAR_BIT);
	93	return 0;
	94	}
	95	}
	96	}
9ffd39fc	97	return bt_sequence_rw(ppos, definition);
d06d03db	98	}