SoW-2020-0002: Trace Hit Counters: trigger error reporting integration
[lttng-tools.git] / src / bin / lttng-sessiond / cmd.h
index 49e9992ccc8f09cb4b05e5514a9f341310e5910e..15763b59789b52db6817ee7c7b7b2549be920f44 100644 (file)
@@ -1,28 +1,35 @@
 /*
- * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2012 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.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * 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 CMD_H
 #define CMD_H
 
 #include "context.h"
+#include "lttng-sessiond.h"
+#include "lttng/tracker.h"
 #include "session.h"
+#include <common/tracker.h>
 
 struct notification_thread_handle;
 
+/*
+ * 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.
+ */
+typedef enum lttng_error_code (*completion_handler_function)(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.
@@ -30,37 +37,60 @@ struct notification_thread_handle;
 void cmd_init(void);
 
 /* Session commands */
-int cmd_create_session_uri(char *name, struct lttng_uri *uris,
-               size_t nb_uri, lttng_sock_cred *creds, unsigned int live_timer);
-int cmd_create_session_snapshot(char *name, struct lttng_uri *uris,
-               size_t nb_uri, lttng_sock_cred *creds);
-int cmd_destroy_session(struct ltt_session *session, int wpipe);
+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,
+               struct notification_thread_handle *notification_thread_handle,
+               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 ltt_session *session,
-               struct lttng_domain *domain, struct lttng_channel *attr,
+               const struct lttng_domain *domain, const struct lttng_channel *attr,
                int wpipe);
-int cmd_track_pid(struct ltt_session *session, enum lttng_domain_type domain,
-               int pid);
-int cmd_untrack_pid(struct ltt_session *session, enum lttng_domain_type domain,
-               int pid);
+
+/* 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 ltt_session *session,
                enum lttng_domain_type domain,
-               char *channel_name,
-               struct lttng_event *event);
+               const char *channel_name,
+               const struct lttng_event *event);
 int cmd_add_context(struct ltt_session *session, enum lttng_domain_type domain,
-               char *channel_name, struct lttng_event_context *ctx, int kwpipe);
+               char *channel_name, const struct lttng_event_context *ctx, int kwpipe);
 int cmd_set_filter(struct ltt_session *session, enum lttng_domain_type domain,
                char *channel_name, struct lttng_event *event,
-               struct lttng_filter_bytecode *bytecode);
-int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain,
+               struct lttng_bytecode *bytecode);
+int cmd_enable_event(struct ltt_session *session, const struct lttng_domain *domain,
                char *channel_name, struct lttng_event *event,
                char *filter_expression,
-               struct lttng_filter_bytecode *filter,
+               struct lttng_bytecode *filter,
                struct lttng_event_exclusion *exclusion,
                int wpipe);
 
@@ -81,13 +111,13 @@ ssize_t cmd_list_domains(struct ltt_session *session,
                struct lttng_domain **domains);
 ssize_t cmd_list_events(enum lttng_domain_type domain,
                struct ltt_session *session, char *channel_name,
-               struct lttng_event **events, size_t *total_size);
+               struct lttng_payload *payload);
 ssize_t cmd_list_channels(enum lttng_domain_type domain,
                struct ltt_session *session, struct lttng_channel **channels);
 ssize_t cmd_list_domains(struct ltt_session *session,
                struct lttng_domain **domains);
-void cmd_list_lttng_sessions(struct lttng_session *sessions, uid_t uid,
-               gid_t gid);
+void cmd_list_lttng_sessions(struct lttng_session *sessions,
+               size_t session_count, uid_t uid, gid_t gid);
 ssize_t cmd_list_tracepoint_fields(enum lttng_domain_type domain,
                struct lttng_event_field **fields);
 ssize_t cmd_list_tracepoints(enum lttng_domain_type domain,
@@ -95,18 +125,16 @@ ssize_t cmd_list_tracepoints(enum lttng_domain_type domain,
 ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
                struct lttng_snapshot_output **outputs);
 ssize_t cmd_list_syscalls(struct lttng_event **events);
-ssize_t cmd_list_tracker_pids(struct ltt_session *session,
-               enum lttng_domain_type domain, int32_t **pids);
 
 int cmd_data_pending(struct ltt_session *session);
 
 /* Snapshot */
 int cmd_snapshot_add_output(struct ltt_session *session,
-               struct lttng_snapshot_output *output, uint32_t *id);
+               const struct lttng_snapshot_output *output, uint32_t *id);
 int cmd_snapshot_del_output(struct ltt_session *session,
-               struct lttng_snapshot_output *output);
+               const struct lttng_snapshot_output *output);
 int cmd_snapshot_record(struct ltt_session *session,
-               struct lttng_snapshot_output *output, int wait);
+               const struct lttng_snapshot_output *output, int wait);
 
 int cmd_set_session_shm_path(struct ltt_session *session,
                const char *shm_path);
@@ -114,16 +142,29 @@ int cmd_regenerate_metadata(struct ltt_session *session);
 int cmd_regenerate_statedump(struct ltt_session *session);
 
 int cmd_register_trigger(struct command_ctx *cmd_ctx, int sock,
-               struct notification_thread_handle *notification_thread_handle);
+               struct notification_thread_handle *notification_thread_handle,
+               struct lttng_trigger **return_trigger);
 int cmd_unregister_trigger(struct command_ctx *cmd_ctx, int sock,
                struct notification_thread_handle *notification_thread_handle);
 
+int cmd_list_triggers(struct command_ctx *cmd_ctx,
+               struct notification_thread_handle *notification_thread_handle,
+               struct lttng_triggers **return_triggers);
+
 int cmd_rotate_session(struct ltt_session *session,
-               struct lttng_rotate_session_return *rotate_return);
+               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_session_get_current_output(struct ltt_session *session,
-               struct lttng_session_get_current_output_return *output_return);
+int cmd_rotation_set_schedule(struct ltt_session *session,
+               bool activate, enum lttng_rotation_schedule_type schedule_type,
+               uint64_t value,
+               struct notification_thread_handle *notification_thread_handle);
+
+const struct cmd_completion_handler *cmd_pop_completion_handler(void);
+int start_kernel_session(struct ltt_kernel_session *ksess);
+int stop_kernel_session(struct ltt_kernel_session *ksess);
 
 #endif /* CMD_H */
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