2 * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
4 * SPDX-License-Identifier: GPL-2.0-only
12 #include "lttng-sessiond.h"
13 #include "lttng/tracker.h"
15 #include <common/tracker.h>
17 struct notification_thread_handle
;
20 * A callback (and associated user data) that should be run after a command
21 * has been executed. No locks should be taken while executing this handler.
23 * The command's reply should not be sent until the handler has run and
24 * completed successfully. On failure, the handler's return code should
25 * be the only reply sent to the client.
27 typedef enum lttng_error_code (*completion_handler_function
)(void *);
28 struct cmd_completion_handler
{
29 completion_handler_function run
;
34 * Init the command subsystem. Must be called before using any of the functions
35 * above. This is called in the main() of the session daemon.
39 /* Session commands */
40 enum lttng_error_code
cmd_create_session(struct command_ctx
*cmd_ctx
, int sock
,
41 struct lttng_session_descriptor
**return_descriptor
);
42 int cmd_destroy_session(struct ltt_session
*session
,
43 struct notification_thread_handle
*notification_thread_handle
,
46 /* Channel commands */
47 int cmd_disable_channel(struct ltt_session
*session
,
48 enum lttng_domain_type domain
, char *channel_name
);
49 int cmd_enable_channel(struct ltt_session
*session
,
50 const struct lttng_domain
*domain
, const struct lttng_channel
*attr
,
53 /* Process attribute tracker commands */
54 enum lttng_error_code
cmd_process_attr_tracker_get_tracking_policy(
55 struct ltt_session
*session
,
56 enum lttng_domain_type domain
,
57 enum lttng_process_attr process_attr
,
58 enum lttng_tracking_policy
*policy
);
59 enum lttng_error_code
cmd_process_attr_tracker_set_tracking_policy(
60 struct ltt_session
*session
,
61 enum lttng_domain_type domain
,
62 enum lttng_process_attr process_attr
,
63 enum lttng_tracking_policy policy
);
64 enum lttng_error_code
cmd_process_attr_tracker_inclusion_set_add_value(
65 struct ltt_session
*session
,
66 enum lttng_domain_type domain
,
67 enum lttng_process_attr process_attr
,
68 const struct process_attr_value
*value
);
69 enum lttng_error_code
cmd_process_attr_tracker_inclusion_set_remove_value(
70 struct ltt_session
*session
,
71 enum lttng_domain_type domain
,
72 enum lttng_process_attr process_attr
,
73 const struct process_attr_value
*value
);
74 enum lttng_error_code
cmd_process_attr_tracker_get_inclusion_set(
75 struct ltt_session
*session
,
76 enum lttng_domain_type domain
,
77 enum lttng_process_attr process_attr
,
78 struct lttng_process_attr_values
**values
);
81 int cmd_disable_event(struct ltt_session
*session
,
82 enum lttng_domain_type domain
,
83 const char *channel_name
,
84 const struct lttng_event
*event
);
85 int cmd_add_context(struct ltt_session
*session
, enum lttng_domain_type domain
,
86 char *channel_name
, const struct lttng_event_context
*ctx
, int kwpipe
);
87 int cmd_set_filter(struct ltt_session
*session
, enum lttng_domain_type domain
,
88 char *channel_name
, struct lttng_event
*event
,
89 struct lttng_bytecode
*bytecode
);
90 int cmd_enable_event(struct ltt_session
*session
, const struct lttng_domain
*domain
,
91 char *channel_name
, struct lttng_event
*event
,
92 char *filter_expression
,
93 struct lttng_bytecode
*filter
,
94 struct lttng_event_exclusion
*exclusion
,
97 /* Trace session action commands */
98 int cmd_start_trace(struct ltt_session
*session
);
99 int cmd_stop_trace(struct ltt_session
*session
);
101 /* Consumer commands */
102 int cmd_register_consumer(struct ltt_session
*session
,
103 enum lttng_domain_type domain
,
104 const char *sock_path
, struct consumer_data
*cdata
);
105 int cmd_set_consumer_uri(struct ltt_session
*session
, size_t nb_uri
,
106 struct lttng_uri
*uris
);
107 int cmd_setup_relayd(struct ltt_session
*session
);
109 /* Listing commands */
110 ssize_t
cmd_list_domains(struct ltt_session
*session
,
111 struct lttng_domain
**domains
);
112 ssize_t
cmd_list_events(enum lttng_domain_type domain
,
113 struct ltt_session
*session
, char *channel_name
,
114 struct lttng_payload
*payload
);
115 ssize_t
cmd_list_channels(enum lttng_domain_type domain
,
116 struct ltt_session
*session
, struct lttng_channel
**channels
);
117 ssize_t
cmd_list_domains(struct ltt_session
*session
,
118 struct lttng_domain
**domains
);
119 void cmd_list_lttng_sessions(struct lttng_session
*sessions
,
120 size_t session_count
, uid_t uid
, gid_t gid
);
121 ssize_t
cmd_list_tracepoint_fields(enum lttng_domain_type domain
,
122 struct lttng_event_field
**fields
);
123 ssize_t
cmd_list_tracepoints(enum lttng_domain_type domain
,
124 struct lttng_event
**events
);
125 ssize_t
cmd_snapshot_list_outputs(struct ltt_session
*session
,
126 struct lttng_snapshot_output
**outputs
);
127 ssize_t
cmd_list_syscalls(struct lttng_event
**events
);
129 int cmd_data_pending(struct ltt_session
*session
);
132 int cmd_snapshot_add_output(struct ltt_session
*session
,
133 const struct lttng_snapshot_output
*output
, uint32_t *id
);
134 int cmd_snapshot_del_output(struct ltt_session
*session
,
135 const struct lttng_snapshot_output
*output
);
136 int cmd_snapshot_record(struct ltt_session
*session
,
137 const struct lttng_snapshot_output
*output
, int wait
);
139 int cmd_set_session_shm_path(struct ltt_session
*session
,
140 const char *shm_path
);
141 int cmd_regenerate_metadata(struct ltt_session
*session
);
142 int cmd_regenerate_statedump(struct ltt_session
*session
);
144 enum lttng_error_code
cmd_register_trigger(
145 const struct lttng_credentials
*cmd_creds
,
146 struct lttng_trigger
*trigger
,
147 bool is_anonymous_trigger
,
148 struct notification_thread_handle
*notification_thread_handle
,
149 struct lttng_trigger
**return_trigger
);
150 enum lttng_error_code
cmd_unregister_trigger(
151 const struct lttng_credentials
*cmd_creds
,
152 const struct lttng_trigger
*trigger
,
153 struct notification_thread_handle
*notification_thread_handle
);
155 enum lttng_error_code
cmd_list_triggers(struct command_ctx
*cmd_ctx
,
156 struct notification_thread_handle
*notification_thread_handle
,
157 struct lttng_triggers
**return_triggers
);
158 enum lttng_error_code
cmd_execute_error_query(const struct lttng_credentials
*cmd_creds
,
159 const struct lttng_error_query
*query
,
160 struct lttng_error_query_results
**_results
,
161 struct notification_thread_handle
*notification_thread
);
163 int cmd_rotate_session(struct ltt_session
*session
,
164 struct lttng_rotate_session_return
*rotate_return
,
166 enum lttng_trace_chunk_command_type command
);
167 int cmd_rotate_get_info(struct ltt_session
*session
,
168 struct lttng_rotation_get_info_return
*info_return
,
170 int cmd_rotation_set_schedule(struct ltt_session
*session
,
171 bool activate
, enum lttng_rotation_schedule_type schedule_type
,
173 struct notification_thread_handle
*notification_thread_handle
);
175 const struct cmd_completion_handler
*cmd_pop_completion_handler(void);
176 int start_kernel_session(struct ltt_kernel_session
*ksess
);
177 int stop_kernel_session(struct ltt_kernel_session
*ksess
);