[lttng-tools.git] / src / bin / lttng-sessiond / cmd.hpp

/*
 * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef CMD_H
#define CMD_H

#include "context.hpp"
#include "lttng-sessiond.hpp"
#include "lttng/tracker.h"
#include "session.hpp"

#include <common/tracker.hpp>

#include <lttng/kernel.h>

struct notification_thread_handle;
struct lttng_dynamic_buffer;

/*
 * A callback (and associated user data) that should be run after a command
 * has been executed. No locks should be taken while executing this handler.
 *
 * The command's reply should not be sent until the handler has run and
 * completed successfully. On failure, the handler's return code should
 * be the only reply sent to the client.
 */
using completion_handler_function = enum lttng_error_code (*)(void *);
struct cmd_completion_handler {
	completion_handler_function run;
	void *data;
};

/*
 * Init the command subsystem. Must be called before using any of the functions
 * above. This is called in the main() of the session daemon.
 */
void cmd_init();

/* Session commands */
enum lttng_error_code cmd_create_session(struct command_ctx *cmd_ctx,
					 int sock,
					 struct lttng_session_descriptor **return_descriptor);
int cmd_destroy_session(struct ltt_session *session, int *sock_fd);

/* Channel commands */
int cmd_disable_channel(struct ltt_session *session,
			enum lttng_domain_type domain,
			char *channel_name);
int cmd_enable_channel(struct command_ctx *cmd_ctx, int sock, int wpipe);

/* Process attribute tracker commands */
enum lttng_error_code
cmd_process_attr_tracker_get_tracking_policy(struct ltt_session *session,
					     enum lttng_domain_type domain,
					     enum lttng_process_attr process_attr,
					     enum lttng_tracking_policy *policy);
enum lttng_error_code
cmd_process_attr_tracker_set_tracking_policy(struct ltt_session *session,
					     enum lttng_domain_type domain,
					     enum lttng_process_attr process_attr,
					     enum lttng_tracking_policy policy);
enum lttng_error_code
cmd_process_attr_tracker_inclusion_set_add_value(struct ltt_session *session,
						 enum lttng_domain_type domain,
						 enum lttng_process_attr process_attr,
						 const struct process_attr_value *value);
enum lttng_error_code
cmd_process_attr_tracker_inclusion_set_remove_value(struct ltt_session *session,
						    enum lttng_domain_type domain,
						    enum lttng_process_attr process_attr,
						    const struct process_attr_value *value);
enum lttng_error_code
cmd_process_attr_tracker_get_inclusion_set(struct ltt_session *session,
					   enum lttng_domain_type domain,
					   enum lttng_process_attr process_attr,
					   struct lttng_process_attr_values **values);

/* Event commands */
int cmd_disable_event(struct command_ctx *cmd_ctx,
		      struct lttng_event *event,
		      char *filter_expression,
		      struct lttng_bytecode *filter,
		      struct lttng_event_exclusion *exclusion);
int cmd_add_context(struct command_ctx *cmd_ctx,
		    const struct lttng_event_context *event_context,
		    int kwpipe);
int cmd_set_filter(struct ltt_session *session,
		   enum lttng_domain_type domain,
		   char *channel_name,
		   struct lttng_event *event,
		   struct lttng_bytecode *bytecode);
int cmd_enable_event(struct command_ctx *cmd_ctx,
		     struct lttng_event *event,
		     char *filter_expression,
		     struct lttng_event_exclusion *exclusion,
		     struct lttng_bytecode *bytecode,
		     int wpipe);

/* Trace session action commands */
int cmd_start_trace(struct ltt_session *session);
int cmd_stop_trace(struct ltt_session *session);

/* Consumer commands */
int cmd_register_consumer(struct ltt_session *session,
			  enum lttng_domain_type domain,
			  const char *sock_path,
			  struct consumer_data *cdata);
int cmd_set_consumer_uri(struct ltt_session *session, size_t nb_uri, struct lttng_uri *uris);
int cmd_setup_relayd(struct ltt_session *session);

/* Listing commands */
ssize_t cmd_list_domains(struct ltt_session *session, struct lttng_domain **domains);
enum lttng_error_code cmd_list_events(enum lttng_domain_type domain,
				      struct ltt_session *session,
				      char *channel_name,
				      struct lttng_payload *payload);
enum lttng_error_code cmd_list_channels(enum lttng_domain_type domain,
					struct ltt_session *session,
					struct lttng_payload *payload);
void cmd_list_lttng_sessions(struct lttng_session *sessions,
			     size_t session_count,
			     uid_t uid,
			     gid_t gid);
enum lttng_error_code cmd_list_tracepoint_fields(enum lttng_domain_type domain,
						 struct lttng_payload *reply);
enum lttng_error_code cmd_list_tracepoints(enum lttng_domain_type domain,
					   struct lttng_payload *reply_payload);
ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
				  struct lttng_snapshot_output **outputs);
enum lttng_error_code cmd_list_syscalls(struct lttng_payload *reply_payload);

int cmd_data_pending(struct ltt_session *session);
enum lttng_error_code cmd_kernel_tracer_status(enum lttng_kernel_tracer_status *status);

/* Snapshot */
int cmd_snapshot_add_output(struct ltt_session *session,
			    const struct lttng_snapshot_output *output,
			    uint32_t *id);
int cmd_snapshot_del_output(struct ltt_session *session,
			    const struct lttng_snapshot_output *output);
int cmd_snapshot_record(struct ltt_session *session,
			const struct lttng_snapshot_output *output,
			int wait);

int cmd_set_session_shm_path(struct ltt_session *session, const char *shm_path);
int cmd_regenerate_metadata(struct ltt_session *session);
int cmd_regenerate_statedump(struct ltt_session *session);

enum lttng_error_code
cmd_register_trigger(const struct lttng_credentials *cmd_creds,
		     struct lttng_trigger *trigger,
		     bool is_anonymous_trigger,
		     struct notification_thread_handle *notification_thread_handle,
		     struct lttng_trigger **return_trigger);
enum lttng_error_code
cmd_unregister_trigger(const struct lttng_credentials *cmd_creds,
		       const struct lttng_trigger *trigger,
		       struct notification_thread_handle *notification_thread_handle);

enum lttng_error_code
cmd_list_triggers(struct command_ctx *cmd_ctx,
		  struct notification_thread_handle *notification_thread_handle,
		  struct lttng_triggers **return_triggers);
enum lttng_error_code
cmd_execute_error_query(const struct lttng_credentials *cmd_creds,
			const struct lttng_error_query *query,
			struct lttng_error_query_results **_results,
			struct notification_thread_handle *notification_thread);

int cmd_rotate_session(struct ltt_session *session,
		       struct lttng_rotate_session_return *rotate_return,
		       bool quiet_rotation,
		       enum lttng_trace_chunk_command_type command);
int cmd_rotate_get_info(struct ltt_session *session,
			struct lttng_rotation_get_info_return *info_return,
			uint64_t rotate_id);
int cmd_rotation_set_schedule(struct ltt_session *session,
			      bool activate,
			      enum lttng_rotation_schedule_type schedule_type,
			      uint64_t value);

const struct cmd_completion_handler *cmd_pop_completion_handler();
int start_kernel_session(struct ltt_kernel_session *ksess);
int stop_kernel_session(struct ltt_kernel_session *ksess);

#endif /* CMD_H */
Commit	Line	Data
2f77fc4b	1	/*
ab5be9fa	2	* Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
2f77fc4b	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
2f77fc4b	5	*
2f77fc4b DG	6	*/
	7
	8	#ifndef CMD_H
	9	#define CMD_H
	10
c9e313bc SM	11	#include "context.hpp"
c9e313bc SM	12	#include "lttng-sessiond.hpp"
159b042f	13	#include "lttng/tracker.h"
c9e313bc	14	#include "session.hpp"
28f23191	15
c9e313bc	16	#include <common/tracker.hpp>
11927a78	17
49cddecd	18	#include <lttng/kernel.h>
2f77fc4b	19
b0880ae5	20	struct notification_thread_handle;
999af9c1	21	struct lttng_dynamic_buffer;
b0880ae5	22
a503e1ef JG	23	/*
	24	* A callback (and associated user data) that should be run after a command
	25	* has been executed. No locks should be taken while executing this handler.
	26	*
	27	* The command's reply should not be sent until the handler has run and
	28	* completed successfully. On failure, the handler's return code should
	29	* be the only reply sent to the client.
	30	*/
e665dfbc	31	using completion_handler_function = enum lttng_error_code ()(void );
a503e1ef JG	32	struct cmd_completion_handler {
	33	completion_handler_function run;
	34	void *data;
	35	};
	36
2f77fc4b DG	37	/*
	38	* Init the command subsystem. Must be called before using any of the functions
	39	* above. This is called in the main() of the session daemon.
	40	*/
0f4aa1a8	41	void cmd_init();
2f77fc4b DG	42
2f77fc4b DG	43	/* Session commands */
28f23191 JG	44	enum lttng_error_code cmd_create_session(struct command_ctx *cmd_ctx,
	45	int sock,
	46	struct lttng_session_descriptor **return_descriptor);
0038180d	47	int cmd_destroy_session(struct ltt_session session, int sock_fd);
2f77fc4b DG	48
2f77fc4b DG	49	/* Channel commands */
56a37563	50	int cmd_disable_channel(struct ltt_session *session,
28f23191 JG	51	enum lttng_domain_type domain,
28f23191 JG	52	char *channel_name);
999af9c1	53	int cmd_enable_channel(struct command_ctx *cmd_ctx, int sock, int wpipe);
159b042f JG	54
159b042f JG	55	/* Process attribute tracker commands */
28f23191 JG	56	enum lttng_error_code
	57	cmd_process_attr_tracker_get_tracking_policy(struct ltt_session *session,
	58	enum lttng_domain_type domain,
	59	enum lttng_process_attr process_attr,
	60	enum lttng_tracking_policy *policy);
	61	enum lttng_error_code
	62	cmd_process_attr_tracker_set_tracking_policy(struct ltt_session *session,
	63	enum lttng_domain_type domain,
	64	enum lttng_process_attr process_attr,
	65	enum lttng_tracking_policy policy);
	66	enum lttng_error_code
	67	cmd_process_attr_tracker_inclusion_set_add_value(struct ltt_session *session,
	68	enum lttng_domain_type domain,
	69	enum lttng_process_attr process_attr,
	70	const struct process_attr_value *value);
	71	enum lttng_error_code
	72	cmd_process_attr_tracker_inclusion_set_remove_value(struct ltt_session *session,
	73	enum lttng_domain_type domain,
	74	enum lttng_process_attr process_attr,
	75	const struct process_attr_value *value);
	76	enum lttng_error_code
	77	cmd_process_attr_tracker_get_inclusion_set(struct ltt_session *session,
	78	enum lttng_domain_type domain,
	79	enum lttng_process_attr process_attr,
	80	struct lttng_process_attr_values **values);
2f77fc4b DG	81
2f77fc4b DG	82	/* Event commands */
8ddd72ef	83	int cmd_disable_event(struct command_ctx *cmd_ctx,
28f23191 JG	84	struct lttng_event *event,
	85	char *filter_expression,
	86	struct lttng_bytecode *filter,
	87	struct lttng_event_exclusion *exclusion);
26e1c61f	88	int cmd_add_context(struct command_ctx *cmd_ctx,
28f23191 JG	89	const struct lttng_event_context *event_context,
	90	int kwpipe);
	91	int cmd_set_filter(struct ltt_session *session,
	92	enum lttng_domain_type domain,
	93	char *channel_name,
	94	struct lttng_event *event,
	95	struct lttng_bytecode *bytecode);
8ddd72ef	96	int cmd_enable_event(struct command_ctx *cmd_ctx,
28f23191 JG	97	struct lttng_event *event,
	98	char *filter_expression,
	99	struct lttng_event_exclusion *exclusion,
	100	struct lttng_bytecode *bytecode,
	101	int wpipe);
2f77fc4b DG	102
	103	/* Trace session action commands */
	104	int cmd_start_trace(struct ltt_session *session);
	105	int cmd_stop_trace(struct ltt_session *session);
	106
	107	/* Consumer commands */
56a37563	108	int cmd_register_consumer(struct ltt_session *session,
28f23191 JG	109	enum lttng_domain_type domain,
	110	const char *sock_path,
	111	struct consumer_data *cdata);
	112	int cmd_set_consumer_uri(struct ltt_session session, size_t nb_uri, struct lttng_uri uris);
ffe60014	113	int cmd_setup_relayd(struct ltt_session *session);
2f77fc4b DG	114
2f77fc4b DG	115	/* Listing commands */
28f23191	116	ssize_t cmd_list_domains(struct ltt_session session, struct lttng_domain *domains);
8ddd72ef	117	enum lttng_error_code cmd_list_events(enum lttng_domain_type domain,
28f23191 JG	118	struct ltt_session *session,
	119	char *channel_name,
	120	struct lttng_payload *payload);
999af9c1	121	enum lttng_error_code cmd_list_channels(enum lttng_domain_type domain,
28f23191 JG	122	struct ltt_session *session,
28f23191 JG	123	struct lttng_payload *payload);
b178f53e	124	void cmd_list_lttng_sessions(struct lttng_session *sessions,
28f23191 JG	125	size_t session_count,
	126	uid_t uid,
	127	gid_t gid);
b2d68839	128	enum lttng_error_code cmd_list_tracepoint_fields(enum lttng_domain_type domain,
28f23191	129	struct lttng_payload *reply);
8ddd72ef	130	enum lttng_error_code cmd_list_tracepoints(enum lttng_domain_type domain,
28f23191	131	struct lttng_payload *reply_payload);
6dc3064a	132	ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
28f23191 JG	133	struct lttng_snapshot_output **outputs);
28f23191 JG	134	enum lttng_error_code cmd_list_syscalls(struct lttng_payload *reply_payload);
2f77fc4b	135
6d805429	136	int cmd_data_pending(struct ltt_session *session);
49cddecd	137	enum lttng_error_code cmd_kernel_tracer_status(enum lttng_kernel_tracer_status *status);
2f77fc4b	138
6dc3064a DG	139	/* Snapshot */
6dc3064a DG	140	int cmd_snapshot_add_output(struct ltt_session *session,
28f23191 JG	141	const struct lttng_snapshot_output *output,
28f23191 JG	142	uint32_t *id);
6dc3064a	143	int cmd_snapshot_del_output(struct ltt_session *session,
28f23191	144	const struct lttng_snapshot_output *output);
6dc3064a	145	int cmd_snapshot_record(struct ltt_session *session,
28f23191 JG	146	const struct lttng_snapshot_output *output,
28f23191 JG	147	int wait);
6dc3064a	148
28f23191	149	int cmd_set_session_shm_path(struct ltt_session session, const char shm_path);
eded6438	150	int cmd_regenerate_metadata(struct ltt_session *session);
c2561365	151	int cmd_regenerate_statedump(struct ltt_session *session);
d7ba1388	152
28f23191 JG	153	enum lttng_error_code
	154	cmd_register_trigger(const struct lttng_credentials *cmd_creds,
	155	struct lttng_trigger *trigger,
	156	bool is_anonymous_trigger,
	157	struct notification_thread_handle *notification_thread_handle,
	158	struct lttng_trigger **return_trigger);
	159	enum lttng_error_code
	160	cmd_unregister_trigger(const struct lttng_credentials *cmd_creds,
	161	const struct lttng_trigger *trigger,
	162	struct notification_thread_handle *notification_thread_handle);
	163
	164	enum lttng_error_code
	165	cmd_list_triggers(struct command_ctx *cmd_ctx,
	166	struct notification_thread_handle *notification_thread_handle,
	167	struct lttng_triggers **return_triggers);
	168	enum lttng_error_code
	169	cmd_execute_error_query(const struct lttng_credentials *cmd_creds,
	170	const struct lttng_error_query *query,
	171	struct lttng_error_query_results **_results,
	172	struct notification_thread_handle *notification_thread);
fbc9f37d	173
5c408ad8	174	int cmd_rotate_session(struct ltt_session *session,
28f23191 JG	175	struct lttng_rotate_session_return *rotate_return,
	176	bool quiet_rotation,
	177	enum lttng_trace_chunk_command_type command);
d68c9a04	178	int cmd_rotate_get_info(struct ltt_session *session,
28f23191 JG	179	struct lttng_rotation_get_info_return *info_return,
28f23191 JG	180	uint64_t rotate_id);
66ea93b1	181	int cmd_rotation_set_schedule(struct ltt_session *session,
28f23191 JG	182	bool activate,
	183	enum lttng_rotation_schedule_type schedule_type,
	184	uint64_t value);
5c408ad8	185
0f4aa1a8	186	const struct cmd_completion_handler *cmd_pop_completion_handler();
4dbe1875 MD	187	int start_kernel_session(struct ltt_kernel_session *ksess);
4dbe1875 MD	188	int stop_kernel_session(struct ltt_kernel_session *ksess);
a503e1ef	189
2f77fc4b	190	#endif /* CMD_H */