[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 "ctl-utils.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,
		       ltt_session::locked_ref& session,
		       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,
		      ltt_session::locked_ref& locked_session,
		      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,
		    ltt_session::locked_ref& locked_session,
		    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,
		     ltt_session::locked_ref& session,
		     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);

lttng::ctl::trigger
cmd_register_trigger(const struct lttng_credentials *cmd_creds,
		     struct lttng_trigger *trigger,
		     bool is_anonymous_trigger,
		     struct notification_thread_handle *notification_thread_handle);
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	11	#include "context.hpp"
d9a970b7	12	#include "ctl-utils.hpp"
c9e313bc	13	#include "lttng-sessiond.hpp"
159b042f	14	#include "lttng/tracker.h"
c9e313bc	15	#include "session.hpp"
28f23191	16
c9e313bc	17	#include <common/tracker.hpp>
11927a78	18
49cddecd	19	#include <lttng/kernel.h>
2f77fc4b	20
b0880ae5	21	struct notification_thread_handle;
999af9c1	22	struct lttng_dynamic_buffer;
b0880ae5	23
a503e1ef JG	24	/*
	25	* A callback (and associated user data) that should be run after a command
	26	* has been executed. No locks should be taken while executing this handler.
	27	*
	28	* The command's reply should not be sent until the handler has run and
	29	* completed successfully. On failure, the handler's return code should
	30	* be the only reply sent to the client.
	31	*/
e665dfbc	32	using completion_handler_function = enum lttng_error_code ()(void );
a503e1ef JG	33	struct cmd_completion_handler {
	34	completion_handler_function run;
	35	void *data;
	36	};
	37
2f77fc4b DG	38	/*
	39	* Init the command subsystem. Must be called before using any of the functions
	40	* above. This is called in the main() of the session daemon.
	41	*/
0f4aa1a8	42	void cmd_init();
2f77fc4b DG	43
2f77fc4b DG	44	/* Session commands */
28f23191 JG	45	enum lttng_error_code cmd_create_session(struct command_ctx *cmd_ctx,
	46	int sock,
	47	struct lttng_session_descriptor **return_descriptor);
0038180d	48	int cmd_destroy_session(struct ltt_session session, int sock_fd);
2f77fc4b DG	49
2f77fc4b DG	50	/* Channel commands */
56a37563	51	int cmd_disable_channel(struct ltt_session *session,
28f23191 JG	52	enum lttng_domain_type domain,
28f23191 JG	53	char *channel_name);
d9a970b7 JG	54	int cmd_enable_channel(struct command_ctx *cmd_ctx,
	55	ltt_session::locked_ref& session,
	56	int sock,
	57	int wpipe);
159b042f JG	58
159b042f JG	59	/* Process attribute tracker commands */
28f23191 JG	60	enum lttng_error_code
	61	cmd_process_attr_tracker_get_tracking_policy(struct ltt_session *session,
	62	enum lttng_domain_type domain,
	63	enum lttng_process_attr process_attr,
	64	enum lttng_tracking_policy *policy);
	65	enum lttng_error_code
	66	cmd_process_attr_tracker_set_tracking_policy(struct ltt_session *session,
	67	enum lttng_domain_type domain,
	68	enum lttng_process_attr process_attr,
	69	enum lttng_tracking_policy policy);
	70	enum lttng_error_code
	71	cmd_process_attr_tracker_inclusion_set_add_value(struct ltt_session *session,
	72	enum lttng_domain_type domain,
	73	enum lttng_process_attr process_attr,
	74	const struct process_attr_value *value);
	75	enum lttng_error_code
	76	cmd_process_attr_tracker_inclusion_set_remove_value(struct ltt_session *session,
	77	enum lttng_domain_type domain,
	78	enum lttng_process_attr process_attr,
	79	const struct process_attr_value *value);
	80	enum lttng_error_code
	81	cmd_process_attr_tracker_get_inclusion_set(struct ltt_session *session,
	82	enum lttng_domain_type domain,
	83	enum lttng_process_attr process_attr,
	84	struct lttng_process_attr_values **values);
2f77fc4b DG	85
2f77fc4b DG	86	/* Event commands */
8ddd72ef	87	int cmd_disable_event(struct command_ctx *cmd_ctx,
d9a970b7	88	ltt_session::locked_ref& locked_session,
28f23191 JG	89	struct lttng_event *event,
	90	char *filter_expression,
	91	struct lttng_bytecode *filter,
	92	struct lttng_event_exclusion *exclusion);
26e1c61f	93	int cmd_add_context(struct command_ctx *cmd_ctx,
d9a970b7	94	ltt_session::locked_ref& locked_session,
28f23191 JG	95	const struct lttng_event_context *event_context,
	96	int kwpipe);
	97	int cmd_set_filter(struct ltt_session *session,
	98	enum lttng_domain_type domain,
	99	char *channel_name,
	100	struct lttng_event *event,
	101	struct lttng_bytecode *bytecode);
8ddd72ef	102	int cmd_enable_event(struct command_ctx *cmd_ctx,
d9a970b7	103	ltt_session::locked_ref& session,
28f23191 JG	104	struct lttng_event *event,
	105	char *filter_expression,
	106	struct lttng_event_exclusion *exclusion,
	107	struct lttng_bytecode *bytecode,
	108	int wpipe);
2f77fc4b DG	109
	110	/* Trace session action commands */
	111	int cmd_start_trace(struct ltt_session *session);
	112	int cmd_stop_trace(struct ltt_session *session);
	113
	114	/* Consumer commands */
56a37563	115	int cmd_register_consumer(struct ltt_session *session,
28f23191 JG	116	enum lttng_domain_type domain,
	117	const char *sock_path,
	118	struct consumer_data *cdata);
	119	int cmd_set_consumer_uri(struct ltt_session session, size_t nb_uri, struct lttng_uri uris);
ffe60014	120	int cmd_setup_relayd(struct ltt_session *session);
2f77fc4b DG	121
2f77fc4b DG	122	/* Listing commands */
28f23191	123	ssize_t cmd_list_domains(struct ltt_session session, struct lttng_domain *domains);
8ddd72ef	124	enum lttng_error_code cmd_list_events(enum lttng_domain_type domain,
28f23191 JG	125	struct ltt_session *session,
	126	char *channel_name,
	127	struct lttng_payload *payload);
999af9c1	128	enum lttng_error_code cmd_list_channels(enum lttng_domain_type domain,
28f23191 JG	129	struct ltt_session *session,
28f23191 JG	130	struct lttng_payload *payload);
b178f53e	131	void cmd_list_lttng_sessions(struct lttng_session *sessions,
28f23191 JG	132	size_t session_count,
	133	uid_t uid,
	134	gid_t gid);
b2d68839	135	enum lttng_error_code cmd_list_tracepoint_fields(enum lttng_domain_type domain,
28f23191	136	struct lttng_payload *reply);
8ddd72ef	137	enum lttng_error_code cmd_list_tracepoints(enum lttng_domain_type domain,
28f23191	138	struct lttng_payload *reply_payload);
6dc3064a	139	ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
28f23191 JG	140	struct lttng_snapshot_output **outputs);
28f23191 JG	141	enum lttng_error_code cmd_list_syscalls(struct lttng_payload *reply_payload);
2f77fc4b	142
6d805429	143	int cmd_data_pending(struct ltt_session *session);
49cddecd	144	enum lttng_error_code cmd_kernel_tracer_status(enum lttng_kernel_tracer_status *status);
2f77fc4b	145
6dc3064a DG	146	/* Snapshot */
6dc3064a DG	147	int cmd_snapshot_add_output(struct ltt_session *session,
28f23191 JG	148	const struct lttng_snapshot_output *output,
28f23191 JG	149	uint32_t *id);
6dc3064a	150	int cmd_snapshot_del_output(struct ltt_session *session,
28f23191	151	const struct lttng_snapshot_output *output);
6dc3064a	152	int cmd_snapshot_record(struct ltt_session *session,
28f23191 JG	153	const struct lttng_snapshot_output *output,
28f23191 JG	154	int wait);
6dc3064a	155
28f23191	156	int cmd_set_session_shm_path(struct ltt_session session, const char shm_path);
eded6438	157	int cmd_regenerate_metadata(struct ltt_session *session);
c2561365	158	int cmd_regenerate_statedump(struct ltt_session *session);
d7ba1388	159
d9a970b7	160	lttng::ctl::trigger
28f23191 JG	161	cmd_register_trigger(const struct lttng_credentials *cmd_creds,
	162	struct lttng_trigger *trigger,
	163	bool is_anonymous_trigger,
d9a970b7	164	struct notification_thread_handle *notification_thread_handle);
28f23191 JG	165	enum lttng_error_code
	166	cmd_unregister_trigger(const struct lttng_credentials *cmd_creds,
	167	const struct lttng_trigger *trigger,
	168	struct notification_thread_handle *notification_thread_handle);
	169
	170	enum lttng_error_code
	171	cmd_list_triggers(struct command_ctx *cmd_ctx,
	172	struct notification_thread_handle *notification_thread_handle,
	173	struct lttng_triggers **return_triggers);
	174	enum lttng_error_code
	175	cmd_execute_error_query(const struct lttng_credentials *cmd_creds,
	176	const struct lttng_error_query *query,
	177	struct lttng_error_query_results **_results,
	178	struct notification_thread_handle *notification_thread);
fbc9f37d	179
5c408ad8	180	int cmd_rotate_session(struct ltt_session *session,
28f23191 JG	181	struct lttng_rotate_session_return *rotate_return,
	182	bool quiet_rotation,
	183	enum lttng_trace_chunk_command_type command);
d68c9a04	184	int cmd_rotate_get_info(struct ltt_session *session,
28f23191 JG	185	struct lttng_rotation_get_info_return *info_return,
28f23191 JG	186	uint64_t rotate_id);
66ea93b1	187	int cmd_rotation_set_schedule(struct ltt_session *session,
28f23191 JG	188	bool activate,
	189	enum lttng_rotation_schedule_type schedule_type,
	190	uint64_t value);
5c408ad8	191
0f4aa1a8	192	const struct cmd_completion_handler *cmd_pop_completion_handler();
4dbe1875 MD	193	int start_kernel_session(struct ltt_kernel_session *ksess);
4dbe1875 MD	194	int stop_kernel_session(struct ltt_kernel_session *ksess);
a503e1ef	195
2f77fc4b	196	#endif /* CMD_H */