X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fevent.c;h=8be9fc6c44611b551ecfa22f60663c589dcfbf92;hp=573e5a15657594c7e0d3a51f11087a1445787803;hb=561c68970ca461ccf8451aee47efc29da20ad8f1;hpb=0525e9ae15d215943d8187e7f190d5a45e723085 diff --git a/src/bin/lttng-sessiond/event.c b/src/bin/lttng-sessiond/event.c index 573e5a156..8be9fc6c4 100644 --- a/src/bin/lttng-sessiond/event.c +++ b/src/bin/lttng-sessiond/event.c @@ -73,8 +73,8 @@ static void init_syscalls_kernel_event(struct lttng_event *event) /* * Disable kernel tracepoint event for a channel from the kernel session. */ -int event_kernel_disable_tracepoint(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan, char *event_name) +int event_kernel_disable_tracepoint(struct ltt_kernel_channel *kchan, + char *event_name) { int ret; struct ltt_kernel_event *kevent; @@ -105,8 +105,7 @@ error: /* * Disable kernel tracepoint events for a channel from the kernel session. */ -int event_kernel_disable_all_tracepoints(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan) +int event_kernel_disable_all_tracepoints(struct ltt_kernel_channel *kchan) { int ret; struct ltt_kernel_event *kevent; @@ -128,8 +127,7 @@ int event_kernel_disable_all_tracepoints(struct ltt_kernel_session *ksession, /* * Disable kernel syscall events for a channel from the kernel session. */ -int event_kernel_disable_all_syscalls(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan) +int event_kernel_disable_all_syscalls(struct ltt_kernel_channel *kchan) { ERR("Cannot disable syscall tracing for existing session. Please destroy session instead."); return LTTNG_OK; /* Return OK so disable all succeeds */ @@ -138,26 +136,24 @@ int event_kernel_disable_all_syscalls(struct ltt_kernel_session *ksession, /* * Disable all kernel event for a channel from the kernel session. */ -int event_kernel_disable_all(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan) +int event_kernel_disable_all(struct ltt_kernel_channel *kchan) { int ret; - assert(ksession); assert(kchan); - ret = event_kernel_disable_all_tracepoints(ksession, kchan); + ret = event_kernel_disable_all_tracepoints(kchan); if (ret != LTTNG_OK) return ret; - ret = event_kernel_disable_all_syscalls(ksession, kchan); + ret = event_kernel_disable_all_syscalls(kchan); return ret; } /* * Enable kernel tracepoint event for a channel from the kernel session. */ -int event_kernel_enable_tracepoint(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan, struct lttng_event *event) +int event_kernel_enable_tracepoint(struct ltt_kernel_channel *kchan, + struct lttng_event *event) { int ret; struct ltt_kernel_event *kevent; @@ -202,8 +198,8 @@ end: /* * Enable all kernel tracepoint events of a channel of the kernel session. */ -int event_kernel_enable_all_tracepoints(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan, int kernel_tracer_fd) +int event_kernel_enable_all_tracepoints(struct ltt_kernel_channel *kchan, + int kernel_tracer_fd) { int size, i, ret; struct ltt_kernel_event *kevent; @@ -248,10 +244,10 @@ end: } /* - * Enable all kernel tracepoint events of a channel of the kernel session. + * Enable all kernel sycalls events of a channel of the kernel session. */ -int event_kernel_enable_all_syscalls(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan, int kernel_tracer_fd) +int event_kernel_enable_all_syscalls(struct ltt_kernel_channel *kchan, + int kernel_tracer_fd) { int ret; struct lttng_event event; @@ -280,16 +276,14 @@ end: /* * Enable all kernel events of a channel of the kernel session. */ -int event_kernel_enable_all(struct ltt_kernel_session *ksession, - struct ltt_kernel_channel *kchan, int kernel_tracer_fd) +int event_kernel_enable_all(struct ltt_kernel_channel *kchan, + int kernel_tracer_fd) { int tp_ret; - assert(ksession); assert(kchan); - tp_ret = event_kernel_enable_all_tracepoints(ksession, kchan, - kernel_tracer_fd); + tp_ret = event_kernel_enable_all_tracepoints(kchan, kernel_tracer_fd); if (tp_ret != LTTNG_OK) { goto end; } @@ -303,7 +297,7 @@ int event_kernel_enable_all(struct ltt_kernel_session *ksession, * tracepoints did not fail. Future work will allow us to send back * multiple errors to the client in one API call. */ - (void) event_kernel_enable_all_syscalls(ksession, kchan, kernel_tracer_fd); + (void) event_kernel_enable_all_syscalls(kchan, kernel_tracer_fd); end: return tp_ret; @@ -318,7 +312,7 @@ end: /* * Enable all UST tracepoints for a channel from a UST session. */ -int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess, int domain, +int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct lttng_filter_bytecode *filter) { int ret, i, size; @@ -331,86 +325,71 @@ int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess, int domain, rcu_read_lock(); - switch (domain) { - case LTTNG_DOMAIN_UST: - { - /* Enable existing events */ - cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, - node.node) { - if (uevent->enabled == 0) { - ret = ust_app_enable_event_glb(usess, uchan, uevent); - if (ret < 0) { - continue; - } - uevent->enabled = 1; - } - } - - /* Get all UST available events */ - size = ust_app_list_events(&events); - if (size < 0) { - ret = LTTNG_ERR_UST_LIST_FAIL; - goto error; - } - - for (i = 0; i < size; i++) { - /* - * Check if event exist and if so, continue since it was enable - * previously. - */ - uevent = trace_ust_find_event(uchan->events, events[i].name, filter, - events[i].loglevel); - if (uevent != NULL) { - ret = ust_app_enable_event_pid(usess, uchan, uevent, - events[i].pid); - if (ret < 0) { - if (ret != -LTTNG_UST_ERR_EXIST) { - ret = LTTNG_ERR_UST_ENABLE_FAIL; - goto error; - } - } + /* Enable existing events */ + cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, + node.node) { + if (uevent->enabled == 0) { + ret = ust_app_enable_event_glb(usess, uchan, uevent); + if (ret < 0) { continue; } + uevent->enabled = 1; + } + } - /* Create ust event */ - uevent = trace_ust_create_event(&events[i], filter); - if (uevent == NULL) { - ret = LTTNG_ERR_FATAL; - goto error_destroy; - } + /* Get all UST available events */ + size = ust_app_list_events(&events); + if (size < 0) { + ret = LTTNG_ERR_UST_LIST_FAIL; + goto error; + } - /* Create event for the specific PID */ + for (i = 0; i < size; i++) { + /* + * Check if event exist and if so, continue since it was enable + * previously. + */ + uevent = trace_ust_find_event(uchan->events, events[i].name, filter, + events[i].loglevel); + if (uevent != NULL) { ret = ust_app_enable_event_pid(usess, uchan, uevent, events[i].pid); if (ret < 0) { - if (ret == -LTTNG_UST_ERR_EXIST) { - ret = LTTNG_ERR_UST_EVENT_EXIST; - goto error; - } else { + if (ret != -LTTNG_UST_ERR_EXIST) { ret = LTTNG_ERR_UST_ENABLE_FAIL; - goto error_destroy; + goto error; } } + continue; + } - uevent->enabled = 1; - /* Add ltt ust event to channel */ - rcu_read_lock(); - add_unique_ust_event(uchan->events, uevent); - rcu_read_unlock(); + /* Create ust event */ + uevent = trace_ust_create_event(&events[i], filter, NULL); + if (uevent == NULL) { + ret = LTTNG_ERR_FATAL; + goto error_destroy; } - free(events); - break; - } -#if 0 - case LTTNG_DOMAIN_UST_EXEC_NAME: - case LTTNG_DOMAIN_UST_PID: - case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: -#endif - default: - ret = LTTNG_ERR_UND; - goto error; + /* Create event for the specific PID */ + ret = ust_app_enable_event_pid(usess, uchan, uevent, + events[i].pid); + if (ret < 0) { + if (ret == -LTTNG_UST_ERR_EXIST) { + ret = LTTNG_ERR_UST_EVENT_EXIST; + goto error; + } else { + ret = LTTNG_ERR_UST_ENABLE_FAIL; + goto error_destroy; + } + } + + uevent->enabled = 1; + /* Add ltt ust event to channel */ + rcu_read_lock(); + add_unique_ust_event(uchan->events, uevent); + rcu_read_unlock(); } + free(events); rcu_read_unlock(); return LTTNG_OK; @@ -427,9 +406,10 @@ error: /* * Enable UST tracepoint event for a channel from a UST session. */ -int event_ust_enable_tracepoint(struct ltt_ust_session *usess, int domain, +int event_ust_enable_tracepoint(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, struct lttng_event *event, - struct lttng_filter_bytecode *filter) + struct lttng_filter_bytecode *filter, + struct lttng_event_exclusion *exclusion) { int ret = LTTNG_OK, to_create = 0; struct ltt_ust_event *uevent; @@ -443,7 +423,7 @@ int event_ust_enable_tracepoint(struct ltt_ust_session *usess, int domain, uevent = trace_ust_find_event(uchan->events, event->name, filter, event->loglevel); if (uevent == NULL) { - uevent = trace_ust_create_event(event, filter); + uevent = trace_ust_create_event(event, filter, exclusion); if (uevent == NULL) { ret = LTTNG_ERR_UST_ENABLE_FAIL; goto error; @@ -461,36 +441,22 @@ int event_ust_enable_tracepoint(struct ltt_ust_session *usess, int domain, uevent->enabled = 1; - switch (domain) { - case LTTNG_DOMAIN_UST: - { - if (to_create) { - /* Create event on all UST registered apps for session */ - ret = ust_app_create_event_glb(usess, uchan, uevent); - } else { - /* Enable event on all UST registered apps for session */ - ret = ust_app_enable_event_glb(usess, uchan, uevent); - } + if (to_create) { + /* Create event on all UST registered apps for session */ + ret = ust_app_create_event_glb(usess, uchan, uevent); + } else { + /* Enable event on all UST registered apps for session */ + ret = ust_app_enable_event_glb(usess, uchan, uevent); + } - if (ret < 0) { - if (ret == -LTTNG_UST_ERR_EXIST) { - ret = LTTNG_ERR_UST_EVENT_EXIST; - goto end; - } else { - ret = LTTNG_ERR_UST_ENABLE_FAIL; - goto error; - } + if (ret < 0) { + if (ret == -LTTNG_UST_ERR_EXIST) { + ret = LTTNG_ERR_UST_EVENT_EXIST; + goto end; + } else { + ret = LTTNG_ERR_UST_ENABLE_FAIL; + goto error; } - break; - } -#if 0 - case LTTNG_DOMAIN_UST_EXEC_NAME: - case LTTNG_DOMAIN_UST_PID: - case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: -#endif - default: - ret = LTTNG_ERR_UND; - goto end; } if (to_create) { @@ -526,7 +492,7 @@ error: /* * Disable UST tracepoint of a channel from a UST session. */ -int event_ust_disable_tracepoint(struct ltt_ust_session *usess, int domain, +int event_ust_disable_tracepoint(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan, char *event_name) { int ret; @@ -562,33 +528,20 @@ int event_ust_disable_tracepoint(struct ltt_ust_session *usess, int domain, if (uevent->enabled == 0) { /* It's already disabled so everything is OK */ - ret = LTTNG_OK; - continue; + goto next; } - switch (domain) { - case LTTNG_DOMAIN_UST: - ret = ust_app_disable_event_glb(usess, uchan, uevent); - if (ret < 0 && ret != -LTTNG_UST_ERR_EXIST) { - ret = LTTNG_ERR_UST_DISABLE_FAIL; - goto error; - } - break; -#if 0 - case LTTNG_DOMAIN_UST_EXEC_NAME: - case LTTNG_DOMAIN_UST_PID: - case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: -#endif - default: - ret = LTTNG_ERR_UND; + ret = ust_app_disable_event_glb(usess, uchan, uevent); + if (ret < 0 && ret != -LTTNG_UST_ERR_EXIST) { + ret = LTTNG_ERR_UST_DISABLE_FAIL; goto error; } - uevent->enabled = 0; DBG2("Event UST %s disabled in channel %s", uevent->attr.name, uchan->name); +next: /* Get next duplicate event by name. */ cds_lfht_next_duplicate(ht->ht, trace_ust_ht_match_event_by_name, event_name, &iter.iter); @@ -605,7 +558,7 @@ error: /* * Disable all UST tracepoints for a channel from a UST session. */ -int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess, int domain, +int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess, struct ltt_ust_channel *uchan) { int ret, i, size; @@ -618,55 +571,217 @@ int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess, int domain, rcu_read_lock(); - switch (domain) { - case LTTNG_DOMAIN_UST: - { - /* Disabling existing events */ - cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, - node.node) { - if (uevent->enabled == 1) { - ret = event_ust_disable_tracepoint(usess, domain, uchan, - uevent->attr.name); - if (ret < 0) { - continue; - } + /* Disabling existing events */ + cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent, + node.node) { + if (uevent->enabled == 1) { + ret = event_ust_disable_tracepoint(usess, uchan, + uevent->attr.name); + if (ret < 0) { + continue; } } + } - /* Get all UST available events */ - size = ust_app_list_events(&events); - if (size < 0) { - ret = LTTNG_ERR_UST_LIST_FAIL; - goto error; + /* Get all UST available events */ + size = ust_app_list_events(&events); + if (size < 0) { + ret = LTTNG_ERR_UST_LIST_FAIL; + goto error; + } + + for (i = 0; i < size; i++) { + ret = event_ust_disable_tracepoint(usess, uchan, + events[i].name); + if (ret != LTTNG_OK) { + /* Continue to disable the rest... */ + continue; } + } + free(events); - for (i = 0; i < size; i++) { - ret = event_ust_disable_tracepoint(usess, domain, uchan, - events[i].name); - if (ret != LTTNG_OK) { - /* Continue to disable the rest... */ - continue; - } + rcu_read_unlock(); + return LTTNG_OK; + +error: + free(events); + rcu_read_unlock(); + return ret; +} + +/* + * Enable all JUL event for a given UST session. + * + * Return LTTNG_OK on success or else a LTTNG_ERR* code. + */ +int event_jul_enable_all(struct ltt_ust_session *usess) +{ + int ret; + struct jul_event *jevent; + struct lttng_event event; + struct lttng_ht_iter iter; + + assert(usess); + + DBG("Event JUL enabling ALL events for session %" PRIu64, usess->id); + + /* Create the * wildcard event name for the Java agent. */ + memset(event.name, 0, sizeof(event.name)); + strncpy(event.name, "*", sizeof(event.name)); + event.name[sizeof(event.name) - 1] = '\0'; + + /* Enable event on JUL application through TCP socket. */ + ret = event_jul_enable(usess, &event); + if (ret != LTTNG_OK) { + goto error; + } + + /* Flag every event that they are now enabled. */ + rcu_read_lock(); + cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent, + node.node) { + jevent->enabled = 1; + } + rcu_read_unlock(); + + ret = LTTNG_OK; + +error: + return ret; +} + +/* + * Enable a single JUL event for a given UST session. + * + * Return LTTNG_OK on success or else a LTTNG_ERR* code. + */ +int event_jul_enable(struct ltt_ust_session *usess, struct lttng_event *event) +{ + int ret, created = 0; + struct jul_event *jevent; + + assert(usess); + assert(event); + + DBG("Event JUL enabling %s for session %" PRIu64, event->name, usess->id); + + jevent = jul_find_by_name(event->name, &usess->domain_jul); + if (!jevent) { + jevent = jul_create_event(event->name); + if (!jevent) { + ret = LTTNG_ERR_NOMEM; + goto error; } + created = 1; + } - free(events); - break; + /* Already enabled? */ + if (jevent->enabled) { + goto end; } -#if 0 - case LTTNG_DOMAIN_UST_EXEC_NAME: - case LTTNG_DOMAIN_UST_PID: - case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN: -#endif - default: - ret = LTTNG_ERR_UND; + + ret = jul_enable_event(jevent); + if (ret != LTTNG_OK) { goto error; } - rcu_read_unlock(); + /* If the event was created prior to the enable, add it to the domain. */ + if (created) { + jul_add_event(jevent, &usess->domain_jul); + } + +end: return LTTNG_OK; error: - free(events); + if (created) { + jul_destroy_event(jevent); + } + return ret; +} + +/* + * Disable a single JUL event for a given UST session. + * + * Return LTTNG_OK on success or else a LTTNG_ERR* code. + */ +int event_jul_disable(struct ltt_ust_session *usess, char *event_name) +{ + int ret; + struct jul_event *jevent; + + assert(usess); + assert(event_name); + + DBG("Event JUL disabling %s for session %" PRIu64, event_name, usess->id); + + jevent = jul_find_by_name(event_name, &usess->domain_jul); + if (!jevent) { + ret = LTTNG_ERR_UST_EVENT_NOT_FOUND; + goto error; + } + + /* Already disabled? */ + if (!jevent->enabled) { + goto end; + } + + ret = jul_disable_event(jevent); + if (ret != LTTNG_OK) { + goto error; + } + +end: + return LTTNG_OK; + +error: + return ret; +} +/* + * Disable all JUL event for a given UST session. + * + * Return LTTNG_OK on success or else a LTTNG_ERR* code. + */ +int event_jul_disable_all(struct ltt_ust_session *usess) +{ + int ret, do_disable = 0; + struct jul_event *jevent; + struct lttng_ht_iter iter; + + assert(usess); + + /* Enable event on JUL application through TCP socket. */ + ret = event_jul_disable(usess, "*"); + if (ret != LTTNG_OK) { + if (ret == LTTNG_ERR_UST_EVENT_NOT_FOUND) { + /* + * This means that no enable all was done before but still a user + * could want to disable everything even though the * wild card + * event does not exists. + */ + do_disable = 1; + } else { + goto error; + } + } + + /* Flag every event that they are now enabled. */ + rcu_read_lock(); + cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent, + node.node) { + if (jevent->enabled && do_disable) { + ret = event_jul_disable(usess, jevent->name); + if (ret != LTTNG_OK) { + rcu_read_unlock(); + goto error; + } + } + jevent->enabled = 0; + } rcu_read_unlock(); + + ret = LTTNG_OK; + +error: return ret; }