[lttng-tools.git] / src / common / sessiond-comm / agent.h

/*
 * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License, version 2 only, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef AGENT_COMM
#define AGENT_COMM

#define _GNU_SOURCE
#include <stdint.h>

#include <lttng/lttng.h>

/*
 * Command value passed in the header.
 */
enum lttcomm_agent_command {
	AGENT_CMD_LIST       = 1,
	AGENT_CMD_ENABLE     = 2,
	AGENT_CMD_DISABLE    = 3,
	AGENT_CMD_REG_DONE   = 4,	/* End registration process. */
};

/*
 * Return codes from the agent.
 */
enum lttcomm_agent_ret_code {
	AGENT_RET_CODE_SUCCESS      = 1,
	AGENT_RET_CODE_INVALID      = 2,
	AGENT_RET_CODE_UNKNOWN_NAME = 3,
	AGENT_RET_CODE_NR,
};

/*
 * Agent application communication header.
 */
struct lttcomm_agent_hdr {
	uint64_t data_size;		/* data size following this header */
	uint32_t cmd;			/* Enum of agent command. */
	uint32_t cmd_version;	/* command version */
} LTTNG_PACKED;

/*
 * Enable event command payload.
 */
struct lttcomm_agent_enable {
	uint32_t loglevel;
	uint32_t loglevel_type;
	char name[LTTNG_SYMBOL_NAME_LEN];
} LTTNG_PACKED;

/*
 * Disable event command payload.
 */
struct lttcomm_agent_disable {
	char name[LTTNG_SYMBOL_NAME_LEN];
} LTTNG_PACKED;

/*
 * Generic reply coming from the agent.
 */
struct lttcomm_agent_generic_reply {
	uint32_t ret_code;
} LTTNG_PACKED;

/*
 * List command reply header.
 */
struct lttcomm_agent_list_reply_hdr {
	uint32_t ret_code;
	uint32_t data_size;
} LTTNG_PACKED;

/*
 * List command reply payload coming from the agent.
 */
struct lttcomm_agent_list_reply {
	uint32_t nb_event;
	/* List of event name each of them ending by a NULL byte. */
	char payload[];
} LTTNG_PACKED;

#endif	/* AGENT_COMM */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License, version 2 only, as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, write to the Free Software Foundation, Inc., 51
	15	* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#ifndef AGENT_COMM
	19	#define AGENT_COMM
	20
	21	#define _GNU_SOURCE
	22	#include <stdint.h>
	23
	24	#include <lttng/lttng.h>
	25
	26	/*
	27	* Command value passed in the header.
	28	*/
	29	enum lttcomm_agent_command {
	30	AGENT_CMD_LIST = 1,
	31	AGENT_CMD_ENABLE = 2,
	32	AGENT_CMD_DISABLE = 3,
	33	AGENT_CMD_REG_DONE = 4, /* End registration process. */
	34	};
	35
	36	/*
	37	* Return codes from the agent.
	38	*/
	39	enum lttcomm_agent_ret_code {
	40	AGENT_RET_CODE_SUCCESS = 1,
	41	AGENT_RET_CODE_INVALID = 2,
	42	AGENT_RET_CODE_UNKNOWN_NAME = 3,
	43	AGENT_RET_CODE_NR,
	44	};
	45
	46	/*
	47	* Agent application communication header.
	48	*/
	49	struct lttcomm_agent_hdr {
	50	uint64_t data_size; /* data size following this header */
	51	uint32_t cmd; /* Enum of agent command. */
	52	uint32_t cmd_version; /* command version */
	53	} LTTNG_PACKED;
	54
	55	/*
	56	* Enable event command payload.
	57	*/
	58	struct lttcomm_agent_enable {
	59	uint32_t loglevel;
	60	uint32_t loglevel_type;
	61	char name[LTTNG_SYMBOL_NAME_LEN];
	62	} LTTNG_PACKED;
	63
	64	/*
	65	* Disable event command payload.
	66	*/
	67	struct lttcomm_agent_disable {
	68	char name[LTTNG_SYMBOL_NAME_LEN];
	69	} LTTNG_PACKED;
	70
	71	/*
	72	* Generic reply coming from the agent.
	73	*/
	74	struct lttcomm_agent_generic_reply {
	75	uint32_t ret_code;
	76	} LTTNG_PACKED;
	77
	78	/*
	79	* List command reply header.
	80	*/
	81	struct lttcomm_agent_list_reply_hdr {
	82	uint32_t ret_code;
	83	uint32_t data_size;
	84	} LTTNG_PACKED;
	85
	86	/*
	87	* List command reply payload coming from the agent.
	88	*/
	89	struct lttcomm_agent_list_reply {
	90	uint32_t nb_event;
	91	/* List of event name each of them ending by a NULL byte. */
	92	char payload[];
	93	} LTTNG_PACKED;
	94
	95	#endif /* AGENT_COMM */