[lttng-tools.git] / lttng-sessiond / ust-app.h

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; only version 2
 * of the License.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _LTT_UST_APP_H 
#define _LTT_UST_APP_H

#include <stdint.h>
#include <urcu/list.h>

#include "trace-ust.h"

#define UST_APP_EVENT_LIST_SIZE 32

/*
 * Application registration data structure.
 */
struct ust_register_msg {
	uint32_t major;
	uint32_t minor;
	pid_t pid;
	pid_t ppid;
	uid_t uid;
	gid_t gid;
	char name[16];
};

/*
 * Global applications HT used by the session daemon.
 */
struct cds_lfht *ust_app_ht;

struct cds_lfht *ust_app_sock_key_map;

struct ust_app_key {
	pid_t pid;
	int sock;
	struct cds_lfht_node node;
};

struct ust_app_event {
	int enabled;
	int handle;
	struct lttng_ust_object_data *obj;
	char name[LTTNG_UST_SYM_NAME_LEN];
	struct cds_lfht *ctx;
	struct cds_lfht_node node;
};

struct ust_app_channel {
	int enabled;
	int handle;
	char name[LTTNG_UST_SYM_NAME_LEN];
	struct lttng_ust_channel attr;
	struct lttng_ust_object_data *obj;
	struct ltt_ust_stream_list streams;
	struct cds_lfht *ctx;
	struct cds_lfht *events;
	struct cds_lfht_node node;
};

struct ust_app_session {
	int enabled;
	int handle;   /* Used has unique identifier */
	unsigned int uid;
	struct ltt_ust_metadata *metadata;
	struct lttng_ust_object_data *obj;
	struct cds_lfht *channels; /* Registered channels */
	struct cds_lfht_node node;
};

/*
 * Registered traceable applications. Libust registers to the session daemon
 * and a linked list is kept of all running traceable app.
 */
struct ust_app {
	pid_t ppid;
	uid_t uid;           /* User ID that owns the apps */
	gid_t gid;           /* Group ID that owns the apps */
	uint32_t v_major;    /* Verion major number */
	uint32_t v_minor;    /* Verion minor number */
	char name[17];       /* Process name (short) */
	struct cds_lfht *sessions;
	struct cds_lfht_node node;
	struct ust_app_key key;
	int sock_closed;
};

#ifdef HAVE_LIBLTTNG_UST_CTL

int ust_app_register(struct ust_register_msg *msg, int sock);
void ust_app_unregister(int sock);
int ust_app_add_channel_all(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan);
int ust_app_add_event_all(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
unsigned long ust_app_list_count(void);
int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
int ust_app_start_trace_all(struct ltt_ust_session *usess);
int ust_app_list_events(struct lttng_event **events);
void ust_app_global_update(struct ltt_ust_session *usess, int sock);

void ust_app_clean_list(void);
void ust_app_ht_alloc(void);
struct cds_lfht *ust_app_get_ht(void);
struct ust_app *ust_app_find_by_pid(pid_t pid);

#else /* HAVE_LIBLTTNG_UST_CTL */

static inline
int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
{
	return 0;
}
static inline
int ust_app_start_trace_all(struct ltt_ust_session *usess)
{
	return 0;
}
static inline
int ust_app_list_events(struct lttng_event **events)
{
	return 0;
}
static inline
int ust_app_register(struct ust_register_msg *msg, int sock)
{
	return -ENOSYS;
}
static inline
void ust_app_unregister(int sock)
{
}
static inline
unsigned int ust_app_list_count(void)
{
	return 0;
}
static inline
void ust_app_lock_list(void)
{
}
static inline
void ust_app_unlock_list(void)
{
}
static inline
void ust_app_clean_list(void)
{
}
static inline
struct ust_app_list *ust_app_get_list(void)
{
	return NULL;
}
static inline
struct ust_app *ust_app_get_by_pid(pid_t pid)
{
	return NULL;
}
static inline
int ust_app_add_channel_all(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan)
{
	return 0;
}
static inline
int ust_app_add_event_all(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
{
	return 0;
}
static inline
struct cds_lfht *ust_app_get_ht(void)
{
	return NULL;
}
static inline
void ust_app_ht_alloc(void)
{
}
static inline
void ust_app_global_update(struct ltt_ust_session *usess, int sock)
{
}

#endif /* HAVE_LIBLTTNG_UST_CTL */

#endif /* _LTT_UST_APP_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; only version 2
	7	* of the License.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
	19	#ifndef _LTT_UST_APP_H
	20	#define _LTT_UST_APP_H
	21
	22	#include <stdint.h>
	23	#include <urcu/list.h>
	24
	25	#include "trace-ust.h"
	26
	27	#define UST_APP_EVENT_LIST_SIZE 32
	28
	29	/*
	30	* Application registration data structure.
	31	*/
	32	struct ust_register_msg {
	33	uint32_t major;
	34	uint32_t minor;
	35	pid_t pid;
	36	pid_t ppid;
	37	uid_t uid;
	38	gid_t gid;
	39	char name[16];
	40	};
	41
	42	/*
	43	* Global applications HT used by the session daemon.
	44	*/
	45	struct cds_lfht *ust_app_ht;
	46
	47	struct cds_lfht *ust_app_sock_key_map;
	48
	49	struct ust_app_key {
	50	pid_t pid;
	51	int sock;
	52	struct cds_lfht_node node;
	53	};
	54
	55	struct ust_app_event {
	56	int enabled;
	57	int handle;
	58	struct lttng_ust_object_data *obj;
	59	char name[LTTNG_UST_SYM_NAME_LEN];
	60	struct cds_lfht *ctx;
	61	struct cds_lfht_node node;
	62	};
	63
	64	struct ust_app_channel {
	65	int enabled;
	66	int handle;
	67	char name[LTTNG_UST_SYM_NAME_LEN];
	68	struct lttng_ust_channel attr;
	69	struct lttng_ust_object_data *obj;
	70	struct ltt_ust_stream_list streams;
	71	struct cds_lfht *ctx;
	72	struct cds_lfht *events;
	73	struct cds_lfht_node node;
	74	};
	75
	76	struct ust_app_session {
	77	int enabled;
	78	int handle; /* Used has unique identifier */
	79	unsigned int uid;
	80	struct ltt_ust_metadata *metadata;
	81	struct lttng_ust_object_data *obj;
	82	struct cds_lfht channels; / Registered channels */
	83	struct cds_lfht_node node;
	84	};
	85
	86	/*
	87	* Registered traceable applications. Libust registers to the session daemon
	88	* and a linked list is kept of all running traceable app.
	89	*/
	90	struct ust_app {
	91	pid_t ppid;
	92	uid_t uid; /* User ID that owns the apps */
	93	gid_t gid; /* Group ID that owns the apps */
	94	uint32_t v_major; /* Verion major number */
	95	uint32_t v_minor; /* Verion minor number */
	96	char name[17]; /* Process name (short) */
	97	struct cds_lfht *sessions;
	98	struct cds_lfht_node node;
	99	struct ust_app_key key;
	100	int sock_closed;
	101	};
	102
	103	#ifdef HAVE_LIBLTTNG_UST_CTL
	104
	105	int ust_app_register(struct ust_register_msg *msg, int sock);
	106	void ust_app_unregister(int sock);
	107	int ust_app_add_channel_all(struct ltt_ust_session *usess,
	108	struct ltt_ust_channel *uchan);
	109	int ust_app_add_event_all(struct ltt_ust_session *usess,
	110	struct ltt_ust_channel uchan, struct ltt_ust_event uevent);
	111	unsigned long ust_app_list_count(void);
	112	int ust_app_start_trace(struct ltt_ust_session usess, struct ust_app app);
	113	int ust_app_start_trace_all(struct ltt_ust_session *usess);
	114	int ust_app_list_events(struct lttng_event **events);
	115	void ust_app_global_update(struct ltt_ust_session *usess, int sock);
	116
	117	void ust_app_clean_list(void);
	118	void ust_app_ht_alloc(void);
	119	struct cds_lfht *ust_app_get_ht(void);
	120	struct ust_app *ust_app_find_by_pid(pid_t pid);
	121
	122	#else /* HAVE_LIBLTTNG_UST_CTL */
	123
	124	static inline
	125	int ust_app_start_trace(struct ltt_ust_session usess, struct ust_app app)
	126	{
	127	return 0;
	128	}
	129	static inline
	130	int ust_app_start_trace_all(struct ltt_ust_session *usess)
	131	{
	132	return 0;
	133	}
	134	static inline
	135	int ust_app_list_events(struct lttng_event **events)
	136	{
	137	return 0;
	138	}
	139	static inline
	140	int ust_app_register(struct ust_register_msg *msg, int sock)
	141	{
	142	return -ENOSYS;
	143	}
	144	static inline
	145	void ust_app_unregister(int sock)
	146	{
	147	}
	148	static inline
	149	unsigned int ust_app_list_count(void)
	150	{
	151	return 0;
	152	}
	153	static inline
	154	void ust_app_lock_list(void)
	155	{
	156	}
	157	static inline
	158	void ust_app_unlock_list(void)
	159	{
	160	}
	161	static inline
	162	void ust_app_clean_list(void)
	163	{
	164	}
	165	static inline
	166	struct ust_app_list *ust_app_get_list(void)
	167	{
	168	return NULL;
	169	}
	170	static inline
	171	struct ust_app *ust_app_get_by_pid(pid_t pid)
	172	{
	173	return NULL;
	174	}
	175	static inline
	176	int ust_app_add_channel_all(struct ltt_ust_session *usess,
	177	struct ltt_ust_channel *uchan)
	178	{
	179	return 0;
	180	}
	181	static inline
	182	int ust_app_add_event_all(struct ltt_ust_session *usess,
	183	struct ltt_ust_channel uchan, struct ltt_ust_event uevent)
	184	{
	185	return 0;
	186	}
	187	static inline
	188	struct cds_lfht *ust_app_get_ht(void)
	189	{
	190	return NULL;
	191	}
	192	static inline
	193	void ust_app_ht_alloc(void)
	194	{
	195	}
	196	static inline
	197	void ust_app_global_update(struct ltt_ust_session *usess, int sock)
	198	{
	199	}
	200
	201	#endif /* HAVE_LIBLTTNG_UST_CTL */
	202
	203	#endif /* _LTT_UST_APP_H */