Rename files for condition event-rule to on-event
[lttng-tools.git] / src / bin / lttng-sessiond / cmd.c
index 2ba825da006cae03d2bb5a8ab396d4642843f5df..d3fc274c311a8ebb8bb0c70471f3cd98bfa5f6bd 100644 (file)
@@ -30,8 +30,8 @@
 #include <lttng/trigger/trigger-internal.h>
 #include <lttng/condition/condition.h>
 #include <lttng/condition/condition-internal.h>
-#include <lttng/condition/event-rule.h>
-#include <lttng/condition/event-rule-internal.h>
+#include <lttng/condition/on-event.h>
+#include <lttng/condition/on-event-internal.h>
 #include <lttng/event-rule/event-rule.h>
 #include <lttng/event-rule/event-rule-internal.h>
 #include <lttng/action/action.h>
@@ -115,7 +115,7 @@ static int cmd_enable_event_internal(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);
 
@@ -359,7 +359,7 @@ static ssize_t list_lttng_channels(enum lttng_domain_type domain,
                         * Map enum lttng_ust_output to enum lttng_event_output.
                         */
                        switch (uchan->attr.output) {
-                       case LTTNG_UST_MMAP:
+                       case LTTNG_UST_ABI_MMAP:
                                channels[i].attr.output = LTTNG_EVENT_MMAP;
                                break;
                        default:
@@ -488,7 +488,7 @@ static int list_lttng_agent_events(struct agent *agt,
        cds_lfht_for_each_entry (
                        agt->events->ht, &iter.iter, agent_event, node.node) {
                struct lttng_event event = {
-                       .enabled = agent_event->enabled,
+                       .enabled = AGENT_EVENT_IS_ENABLED(agent_event),
                        .loglevel = agent_event->loglevel_value,
                        .loglevel_type = agent_event->loglevel_type,
                };
@@ -579,26 +579,26 @@ static int list_lttng_ust_global_events(char *channel_name,
                event.enabled = uevent->enabled;
 
                switch (uevent->attr.instrumentation) {
-               case LTTNG_UST_TRACEPOINT:
+               case LTTNG_UST_ABI_TRACEPOINT:
                        event.type = LTTNG_EVENT_TRACEPOINT;
                        break;
-               case LTTNG_UST_PROBE:
+               case LTTNG_UST_ABI_PROBE:
                        event.type = LTTNG_EVENT_PROBE;
                        break;
-               case LTTNG_UST_FUNCTION:
+               case LTTNG_UST_ABI_FUNCTION:
                        event.type = LTTNG_EVENT_FUNCTION;
                        break;
                }
 
                event.loglevel = uevent->attr.loglevel;
                switch (uevent->attr.loglevel_type) {
-               case LTTNG_UST_LOGLEVEL_ALL:
+               case LTTNG_UST_ABI_LOGLEVEL_ALL:
                        event.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
                        break;
-               case LTTNG_UST_LOGLEVEL_RANGE:
+               case LTTNG_UST_ABI_LOGLEVEL_RANGE:
                        event.loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE;
                        break;
-               case LTTNG_UST_LOGLEVEL_SINGLE:
+               case LTTNG_UST_ABI_LOGLEVEL_SINGLE:
                        event.loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE;
                        break;
                }
@@ -2083,7 +2083,7 @@ static 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, bool internal_event)
 {
@@ -2166,7 +2166,7 @@ static int _cmd_enable_event(struct ltt_session *session,
                case LTTNG_EVENT_ALL:
                {
                        char *filter_expression_a = NULL;
-                       struct lttng_filter_bytecode *filter_a = NULL;
+                       struct lttng_bytecode *filter_a = NULL;
 
                        /*
                         * We need to duplicate filter_expression and filter,
@@ -2401,11 +2401,11 @@ static int _cmd_enable_event(struct ltt_session *session,
 
                {
                        char *filter_expression_copy = NULL;
-                       struct lttng_filter_bytecode *filter_copy = NULL;
+                       struct lttng_bytecode *filter_copy = NULL;
 
                        if (filter) {
                                const size_t filter_size = sizeof(
-                                               struct lttng_filter_bytecode)
+                                               struct lttng_bytecode)
                                                + filter->len;
 
                                filter_copy = zmalloc(filter_size);
@@ -2481,7 +2481,7 @@ 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)
 {
@@ -2498,7 +2498,7 @@ static int cmd_enable_event_internal(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)
 {
@@ -4203,7 +4203,7 @@ end:
  * then regenerate the metadata. Live and per-pid sessions are not
  * supported and return an error.
  *
- * Return 0 on success or else a LTTNG_ERR code.
+ * Return LTTNG_OK on success or else a LTTNG_ERR code.
  */
 int cmd_regenerate_metadata(struct ltt_session *session)
 {
@@ -4244,7 +4244,7 @@ end:
  *
  * Ask the tracer to regenerate a new statedump.
  *
- * Return 0 on success or else a LTTNG_ERR code.
+ * Return LTTNG_OK on success or else a LTTNG_ERR code.
  */
 int cmd_regenerate_statedump(struct ltt_session *session)
 {
@@ -4306,7 +4306,7 @@ static enum lttng_error_code trigger_modifies_event_notifier(
        }
 
        *adds_event_notifier = lttng_condition_get_type(condition) ==
-                       LTTNG_CONDITION_TYPE_EVENT_RULE_HIT;
+                       LTTNG_CONDITION_TYPE_ON_EVENT;
 end:
        return ret_code;
 }
@@ -4317,7 +4317,7 @@ enum lttng_error_code cmd_register_trigger(const struct lttng_credentials *cmd_c
                struct lttng_trigger **return_trigger)
 {
        enum lttng_error_code ret_code;
-       bool must_update_event_notifier;
+       bool must_update_event_notifiers;
        const char *trigger_name;
        uid_t trigger_owner;
        enum lttng_trigger_status trigger_status;
@@ -4377,27 +4377,31 @@ enum lttng_error_code cmd_register_trigger(const struct lttng_credentials *cmd_c
        if (ret_code != LTTNG_OK) {
                DBG("Failed to register trigger to notification thread: trigger name = '%s', trigger owner uid = %d, error code = %d",
                                trigger_name, (int) trigger_owner, ret_code);
-               goto end_notification_thread;
+               goto end;
        }
 
        trigger_status = lttng_trigger_get_name(trigger, &trigger_name);
        trigger_name = trigger_status == LTTNG_TRIGGER_STATUS_OK ?
                        trigger_name : "(unnamed)";
 
-       ret_code = trigger_modifies_event_notifier(trigger, &must_update_event_notifier);
+       ret_code = trigger_modifies_event_notifier(trigger, &must_update_event_notifiers);
        if (ret_code != LTTNG_OK) {
                ERR("Failed to determine if event modifies event notifiers: trigger name = '%s', trigger owner uid = %d, error code = %d",
                                trigger_name, (int) trigger_owner, ret_code);
-               goto end_notification_thread;
+               goto end;
        }
 
        /*
         * Synchronize tracers if the trigger adds an event notifier.
         */
-       if (must_update_event_notifier) {
-               if (lttng_trigger_get_underlying_domain_type_restriction(
-                                   trigger) == LTTNG_DOMAIN_KERNEL) {
+       if (must_update_event_notifiers) {
+               const enum lttng_domain_type trigger_domain =
+                               lttng_trigger_get_underlying_domain_type_restriction(trigger);
 
+               session_lock_list();
+               switch (trigger_domain) {
+               case LTTNG_DOMAIN_KERNEL:
+               {
                        ret_code = kernel_register_event_notifier(
                                        trigger, cmd_creds);
                        if (ret_code != LTTNG_OK) {
@@ -4413,12 +4417,39 @@ enum lttng_error_code cmd_register_trigger(const struct lttng_credentials *cmd_c
                                                        (int) trigger_owner,
                                                        ret_code);
                                }
-
-                               goto end;
                        }
-               } else {
+                       break;
+               }
+               case LTTNG_DOMAIN_UST:
                        ust_app_global_update_all_event_notifier_rules();
+                       break;
+               case LTTNG_DOMAIN_NONE:
+                       abort();
+               default:
+               {
+                       /* Agent domains. */
+                       struct agent *agt = agent_find_by_event_notifier_domain(
+                                       trigger_domain);
+
+                       if (!agt) {
+                               agt = agent_create(trigger_domain);
+                               if (!agt) {
+                                       ret_code = LTTNG_ERR_NOMEM;
+                                       goto end_unlock_session_list;
+                               }
+                               agent_add(agt, trigger_agents_ht_by_domain);
+                       }
+
+                       ret_code = trigger_agent_enable(trigger, agt);
+                       if (ret_code != LTTNG_OK) {
+                               goto end_unlock_session_list;
+                       }
+
+                       break;
                }
+               }
+
+               session_unlock_list();
        }
 
        /*
@@ -4428,14 +4459,17 @@ enum lttng_error_code cmd_register_trigger(const struct lttng_credentials *cmd_c
         * reference to the trigger so the caller doesn't have to care if those
         * are distinct instances or not.
         */
-       lttng_trigger_get(trigger);
-       *return_trigger = trigger;
-
-end_notification_thread:
-       /* Ownership of trigger was transferred. */
-       trigger = NULL;
+       if (ret_code == LTTNG_OK) {
+               lttng_trigger_get(trigger);
+               *return_trigger = trigger;
+               /* Ownership of trigger was transferred to caller. */
+               trigger = NULL;
+       }
 end:
        return ret_code;
+end_unlock_session_list:
+       session_unlock_list();
+       return ret_code;
 }
 
 enum lttng_error_code cmd_unregister_trigger(const struct lttng_credentials *cmd_creds,
@@ -4443,7 +4477,7 @@ enum lttng_error_code cmd_unregister_trigger(const struct lttng_credentials *cmd
                struct notification_thread_handle *notification_thread)
 {
        enum lttng_error_code ret_code;
-       bool must_update_event_notifier;
+       bool must_update_event_notifiers;
        const char *trigger_name;
        uid_t trigger_owner;
        enum lttng_trigger_status trigger_status;
@@ -4475,7 +4509,7 @@ enum lttng_error_code cmd_unregister_trigger(const struct lttng_credentials *cmd
                }
        }
 
-       ret_code = trigger_modifies_event_notifier(trigger, &must_update_event_notifier);
+       ret_code = trigger_modifies_event_notifier(trigger, &must_update_event_notifiers);
        if (ret_code != LTTNG_OK) {
                ERR("Failed to determine if event modifies event notifiers: trigger name = '%s', trigger owner uid = %d, error code = %d",
                                trigger_name, (int) trigger_owner, ret_code);
@@ -4491,21 +4525,60 @@ enum lttng_error_code cmd_unregister_trigger(const struct lttng_credentials *cmd
 
        /*
         * Synchronize tracers if the trigger removes an event notifier.
+        * Do this even if the trigger unregistration failed to at least stop
+        * the tracers from producing notifications associated with this
+        * event notifier.
         */
-       if (must_update_event_notifier) {
-               if (lttng_trigger_get_underlying_domain_type_restriction(
-                                   trigger) == LTTNG_DOMAIN_KERNEL) {
-
+       if (must_update_event_notifiers) {
+               const enum lttng_domain_type trigger_domain =
+                               lttng_trigger_get_underlying_domain_type_restriction(
+                                               trigger);
+
+               session_lock_list();
+               switch (trigger_domain) {
+               case LTTNG_DOMAIN_KERNEL:
+               {
                        ret_code = kernel_unregister_event_notifier(
                                        trigger);
-               } else {
+                       break;
+               }
+               case LTTNG_DOMAIN_UST:
                        ust_app_global_update_all_event_notifier_rules();
+                       break;
+               case LTTNG_DOMAIN_NONE:
+                       abort();
+               default:
+               {
+                       /* Agent domains. */
+                       struct agent *agt = agent_find_by_event_notifier_domain(
+                                       trigger_domain);
+
+                       if (!agt) {
+                               agt = agent_create(trigger_domain);
+                               if (!agt) {
+                                       ret_code = LTTNG_ERR_NOMEM;
+                                       goto end_unlock_session_list;
+                               }
+                               agent_add(agt, trigger_agents_ht_by_domain);
+                       }
+
+                       ret_code = trigger_agent_disable(trigger, agt);
+                       if (ret_code != LTTNG_OK) {
+                               goto end_unlock_session_list;
+                       }
+
+                       break;
+               }
                }
+
+               session_unlock_list();
        }
 
 end:
        return ret_code;
-}
+end_unlock_session_list:
+       session_unlock_list();
+       return ret_code;}
 
 int cmd_list_triggers(struct command_ctx *cmd_ctx,
                struct notification_thread_handle *notification_thread,
@@ -5051,7 +5124,7 @@ int cmd_set_session_shm_path(struct ltt_session *session,
                sizeof(session->shm_path));
        session->shm_path[sizeof(session->shm_path) - 1] = '\0';
 
-       return 0;
+       return LTTNG_OK;
 }
 
 /*
@@ -5404,7 +5477,7 @@ end:
  * 'activate' to false means deactivate the rotation schedule and validate that
  * 'new_value' has the same value as the currently active value.
  *
- * Return 0 on success or else a positive LTTNG_ERR code.
+ * Return LTTNG_OK on success or else a positive LTTNG_ERR code.
  */
 int cmd_rotation_set_schedule(struct ltt_session *session,
                bool activate, enum lttng_rotation_schedule_type schedule_type,
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