X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fcmd.c;h=eb516d3b10c7cbf724c7f7b4c4090db24a510274;hp=6000d198ca2c153b5791e57f7fd4e63f75a47e02;hb=2f785fe7ec15872168aeff467103d3b39c02a46c;hpb=e1986656f8267fb64f5ac67c0d464d157b8a050b diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c index 6000d198c..eb516d3b1 100644 --- a/src/bin/lttng-sessiond/cmd.c +++ b/src/bin/lttng-sessiond/cmd.c @@ -30,7 +30,7 @@ #include "channel.h" #include "consumer.h" #include "event.h" -#include "health.h" +#include "health-sessiond.h" #include "kernel.h" #include "kernel-consumer.h" #include "lttng-sessiond.h" @@ -166,6 +166,8 @@ static void list_lttng_channels(int domain, struct ltt_session *session, channels[i].attr.read_timer_interval = uchan->attr.read_timer_interval; channels[i].enabled = uchan->enabled; + channels[i].attr.tracefile_size = uchan->tracefile_size; + channels[i].attr.tracefile_count = uchan->tracefile_count; switch (uchan->attr.output) { case LTTNG_UST_MMAP: default: @@ -182,6 +184,55 @@ static void list_lttng_channels(int domain, struct ltt_session *session, } } +/* + * Create a list of JUL domain events. + * + * Return number of events in list on success or else a negative value. + */ +static int list_lttng_jul_events(struct jul_domain *dom, + struct lttng_event **events) +{ + int i = 0, ret = 0; + unsigned int nb_event = 0; + struct jul_event *event; + struct lttng_event *tmp_events; + struct lttng_ht_iter iter; + + assert(dom); + assert(events); + + DBG3("Listing JUL events"); + + nb_event = lttng_ht_get_count(dom->events); + if (nb_event == 0) { + ret = nb_event; + goto error; + } + + tmp_events = zmalloc(nb_event * sizeof(*tmp_events)); + if (!tmp_events) { + PERROR("zmalloc JUL events session"); + ret = -LTTNG_ERR_FATAL; + goto error; + } + + rcu_read_lock(); + cds_lfht_for_each_entry(dom->events->ht, &iter.iter, event, node.node) { + strncpy(tmp_events[i].name, event->name, sizeof(tmp_events[i].name)); + tmp_events[i].name[sizeof(tmp_events[i].name) - 1] = '\0'; + tmp_events[i].enabled = event->enabled; + i++; + } + rcu_read_unlock(); + + *events = tmp_events; + ret = nb_event; + +error: + assert(nb_event == i); + return ret; +} + /* * Create a list of ust global domain events. */ @@ -256,6 +307,9 @@ static int list_lttng_ust_global_events(char *channel_name, if (uevent->filter) { tmp[i].filter = 1; } + if (uevent->exclusion) { + tmp[i].exclusion = 1; + } i++; } @@ -406,6 +460,7 @@ static int add_uri_to_consumer(struct consumer_output *consumer, * URI was the same in the consumer so we do not append the subdir * again so to not duplicate output dir. */ + ret = LTTNG_OK; goto error; } @@ -462,9 +517,6 @@ static int init_kernel_tracing(struct ltt_kernel_session *session) if (session->consumer_fds_sent == 0 && session->consumer != NULL) { cds_lfht_for_each_entry(session->consumer->socks->ht, &iter.iter, socket, node.node) { - /* Code flow error */ - assert(socket->fd >= 0); - pthread_mutex_lock(socket->lock); ret = kernel_consumer_send_session(socket, session); pthread_mutex_unlock(socket->lock); @@ -550,7 +602,8 @@ error: */ static int send_consumer_relayd_socket(int domain, unsigned int session_id, struct lttng_uri *relayd_uri, struct consumer_output *consumer, - struct consumer_socket *consumer_sock) + struct consumer_socket *consumer_sock, + char *session_name, char *hostname, int session_live_timer) { int ret; struct lttcomm_relayd_sock *rsock = NULL; @@ -576,7 +629,8 @@ static int send_consumer_relayd_socket(int domain, unsigned int session_id, /* Send relayd socket to consumer. */ ret = consumer_send_relayd_socket(consumer_sock, rsock, consumer, - relayd_uri->stype, session_id); + relayd_uri->stype, session_id, + session_name, hostname, session_live_timer); if (ret < 0) { ret = LTTNG_ERR_ENABLE_CONSUMER_FAIL; goto close_sock; @@ -618,7 +672,8 @@ error: * session. */ static int send_consumer_relayd_sockets(int domain, unsigned int session_id, - struct consumer_output *consumer, struct consumer_socket *sock) + struct consumer_output *consumer, struct consumer_socket *sock, + char *session_name, char *hostname, int session_live_timer) { int ret = LTTNG_OK; @@ -628,7 +683,8 @@ static int send_consumer_relayd_sockets(int domain, unsigned int session_id, /* Sending control relayd socket. */ if (!sock->control_sock_sent) { ret = send_consumer_relayd_socket(domain, session_id, - &consumer->dst.net.control, consumer, sock); + &consumer->dst.net.control, consumer, sock, + session_name, hostname, session_live_timer); if (ret != LTTNG_OK) { goto error; } @@ -637,7 +693,8 @@ static int send_consumer_relayd_sockets(int domain, unsigned int session_id, /* Sending data relayd socket. */ if (!sock->data_sock_sent) { ret = send_consumer_relayd_socket(domain, session_id, - &consumer->dst.net.data, consumer, sock); + &consumer->dst.net.data, consumer, sock, + session_name, hostname, session_live_timer); if (ret != LTTNG_OK) { goto error; } @@ -674,12 +731,11 @@ int cmd_setup_relayd(struct ltt_session *session) /* For each consumer socket, send relayd sockets */ cds_lfht_for_each_entry(usess->consumer->socks->ht, &iter.iter, socket, node.node) { - /* Code flow error */ - assert(socket->fd >= 0); - pthread_mutex_lock(socket->lock); ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_UST, session->id, - usess->consumer, socket); + usess->consumer, socket, + session->name, session->hostname, + session->live_timer); pthread_mutex_unlock(socket->lock); if (ret != LTTNG_OK) { goto error; @@ -693,12 +749,11 @@ int cmd_setup_relayd(struct ltt_session *session) && ksess->consumer->enabled) { cds_lfht_for_each_entry(ksess->consumer->socks->ht, &iter.iter, socket, node.node) { - /* Code flow error */ - assert(socket->fd >= 0); - pthread_mutex_lock(socket->lock); ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_KERNEL, session->id, - ksess->consumer, socket); + ksess->consumer, socket, + session->name, session->hostname, + session->live_timer); pthread_mutex_unlock(socket->lock); if (ret != LTTNG_OK) { goto error; @@ -770,7 +825,7 @@ static int start_kernel_session(struct ltt_kernel_session *ksess, int wpipe) /* Quiescent wait after starting trace */ kernel_wait_quiescent(kernel_tracer_fd); - ksess->started = 1; + ksess->active = 1; ret = LTTNG_OK; @@ -857,16 +912,26 @@ int cmd_enable_channel(struct ltt_session *session, DBG("Enabling channel %s for session %s", attr->name, session->name); + rcu_read_lock(); + /* * Don't try to enable a channel if the session has been started at * some point in time before. The tracer does not allow it. */ - if (session->started) { + if (session->has_been_started) { ret = LTTNG_ERR_TRACE_ALREADY_STARTED; goto error; } - rcu_read_lock(); + /* + * If the session is a live session, remove the switch timer, the + * live timer does the same thing but sends also synchronisation + * beacons for inactive streams. + */ + if (session->live_timer > 0) { + attr->attr.live_timer_interval = session->live_timer; + attr->attr.switch_timer_interval = 0; + } switch (domain->type) { case LTTNG_DOMAIN_KERNEL: @@ -877,6 +942,9 @@ int cmd_enable_channel(struct ltt_session *session, session->kernel_session); if (kchan == NULL) { ret = channel_kernel_create(session->kernel_session, attr, wpipe); + if (attr->name[0] != '\0') { + session->kernel_session->has_non_default_channel = 1; + } } else { ret = channel_kernel_enable(session->kernel_session, kchan); } @@ -897,6 +965,9 @@ int cmd_enable_channel(struct ltt_session *session, uchan = trace_ust_find_channel_by_name(chan_ht, attr->name); if (uchan == NULL) { ret = channel_ust_create(usess, attr, domain->buf_type); + if (attr->name[0] != '\0') { + usess->has_non_default_channel = 1; + } } else { ret = channel_ust_enable(usess, uchan); } @@ -931,6 +1002,16 @@ int cmd_disable_event(struct ltt_session *session, int domain, ksess = session->kernel_session; + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (ksess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + kchan = trace_kernel_get_channel_by_name(channel_name, ksess); if (kchan == NULL) { ret = LTTNG_ERR_KERN_CHAN_NOT_FOUND; @@ -952,6 +1033,16 @@ int cmd_disable_event(struct ltt_session *session, int domain, usess = session->ust_session; + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (usess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + uchan = trace_ust_find_channel_by_name(usess->domain_global.channels, channel_name); if (uchan == NULL) { @@ -968,6 +1059,19 @@ int cmd_disable_event(struct ltt_session *session, int domain, channel_name); break; } + case LTTNG_DOMAIN_JUL: + { + struct ltt_ust_session *usess = session->ust_session; + + assert(usess); + + ret = event_jul_disable(usess, event_name); + if (ret != LTTNG_OK) { + goto error; + } + + break; + } #if 0 case LTTNG_DOMAIN_UST_EXEC_NAME: case LTTNG_DOMAIN_UST_PID: @@ -1003,6 +1107,16 @@ int cmd_disable_event_all(struct ltt_session *session, int domain, ksess = session->kernel_session; + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (ksess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + kchan = trace_kernel_get_channel_by_name(channel_name, ksess); if (kchan == NULL) { ret = LTTNG_ERR_KERN_CHAN_NOT_FOUND; @@ -1024,6 +1138,16 @@ int cmd_disable_event_all(struct ltt_session *session, int domain, usess = session->ust_session; + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (usess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + uchan = trace_ust_find_channel_by_name(usess->domain_global.channels, channel_name); if (uchan == NULL) { @@ -1038,6 +1162,19 @@ int cmd_disable_event_all(struct ltt_session *session, int domain, DBG3("Disable all UST events in channel %s completed", channel_name); + break; + } + case LTTNG_DOMAIN_JUL: + { + struct ltt_ust_session *usess = session->ust_session; + + assert(usess); + + ret = event_jul_disable_all(usess); + if (ret != LTTNG_OK) { + goto error; + } + break; } #if 0 @@ -1077,7 +1214,6 @@ int cmd_add_context(struct ltt_session *session, int domain, } chan_kern_created = 1; } - /* Add kernel context to kernel tracer */ ret = context_kernel_add(session->kernel_session, ctx, channel_name); if (ret != LTTNG_OK) { @@ -1087,10 +1223,11 @@ int cmd_add_context(struct ltt_session *session, int domain, case LTTNG_DOMAIN_UST: { struct ltt_ust_session *usess = session->ust_session; + unsigned int chan_count; + assert(usess); - unsigned int chan_count = - lttng_ht_get_count(usess->domain_global.channels); + chan_count = lttng_ht_get_count(usess->domain_global.channels); if (chan_count == 0) { struct lttng_channel *attr; /* Create default channel */ @@ -1157,7 +1294,10 @@ error: */ int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain, char *channel_name, struct lttng_event *event, - struct lttng_filter_bytecode *filter, int wpipe) + char *filter_expression, + struct lttng_filter_bytecode *filter, + struct lttng_event_exclusion *exclusion, + int wpipe) { int ret, channel_created = 0; struct lttng_channel *attr; @@ -1173,6 +1313,17 @@ int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain, { struct ltt_kernel_channel *kchan; + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (session->kernel_session->has_non_default_channel + && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + kchan = trace_kernel_get_channel_by_name(channel_name, session->kernel_session); if (kchan == NULL) { @@ -1222,6 +1373,16 @@ int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain, assert(usess); + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (usess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + /* Get channel from global UST domain */ uchan = trace_ust_find_channel_by_name(usess->domain_global.channels, channel_name); @@ -1249,10 +1410,58 @@ int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain, } /* At this point, the session and channel exist on the tracer */ - ret = event_ust_enable_tracepoint(usess, uchan, event, filter); + ret = event_ust_enable_tracepoint(usess, uchan, event, + filter_expression, filter, exclusion); + if (ret != LTTNG_OK) { + goto error; + } + break; + } + case LTTNG_DOMAIN_JUL: + { + struct lttng_event uevent; + struct lttng_domain tmp_dom; + struct ltt_ust_session *usess = session->ust_session; + + assert(usess); + + /* Create the default JUL tracepoint. */ + memset(&uevent, 0, sizeof(uevent)); + uevent.type = LTTNG_EVENT_TRACEPOINT; + uevent.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; + if (is_root) { + strncpy(uevent.name, DEFAULT_SYS_JUL_EVENT_NAME, + sizeof(uevent.name)); + } else { + strncpy(uevent.name, DEFAULT_USER_JUL_EVENT_NAME, + sizeof(uevent.name)); + } + uevent.name[sizeof(uevent.name) - 1] = '\0'; + + /* + * The domain type is changed because we are about to enable the + * default channel and event for the JUL domain that are hardcoded. + * This happens in the UST domain. + */ + memcpy(&tmp_dom, domain, sizeof(tmp_dom)); + tmp_dom.type = LTTNG_DOMAIN_UST; + + ret = cmd_enable_event(session, &tmp_dom, DEFAULT_JUL_CHANNEL_NAME, + &uevent, filter_expression, filter, NULL, wpipe); + if (ret != LTTNG_OK && ret != LTTNG_ERR_UST_EVENT_ENABLED) { + goto error; + } + + /* The wild card * means that everything should be enabled. */ + if (strncmp(event->name, "*", 1) == 0 && strlen(event->name) == 1) { + ret = event_jul_enable_all(usess, event); + } else { + ret = event_jul_enable(usess, event); + } if (ret != LTTNG_OK) { goto error; } + break; } #if 0 @@ -1277,6 +1486,7 @@ error: */ int cmd_enable_event_all(struct ltt_session *session, struct lttng_domain *domain, char *channel_name, int event_type, + char *filter_expression, struct lttng_filter_bytecode *filter, int wpipe) { int ret; @@ -1294,6 +1504,17 @@ int cmd_enable_event_all(struct ltt_session *session, assert(session->kernel_session); + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (session->kernel_session->has_non_default_channel + && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + kchan = trace_kernel_get_channel_by_name(channel_name, session->kernel_session); if (kchan == NULL) { @@ -1358,6 +1579,16 @@ int cmd_enable_event_all(struct ltt_session *session, assert(usess); + /* + * If a non-default channel has been created in the + * session, explicitely require that -c chan_name needs + * to be provided. + */ + if (usess->has_non_default_channel && channel_name[0] == '\0') { + ret = LTTNG_ERR_NEED_CHANNEL_NAME; + goto error; + } + /* Get channel from global UST domain */ uchan = trace_ust_find_channel_by_name(usess->domain_global.channels, channel_name); @@ -1389,7 +1620,8 @@ int cmd_enable_event_all(struct ltt_session *session, switch (event_type) { case LTTNG_EVENT_ALL: case LTTNG_EVENT_TRACEPOINT: - ret = event_ust_enable_all_tracepoints(usess, uchan, filter); + ret = event_ust_enable_all_tracepoints(usess, uchan, + filter_expression, filter); if (ret != LTTNG_OK) { goto error; } @@ -1404,6 +1636,52 @@ int cmd_enable_event_all(struct ltt_session *session, goto error; } + break; + } + case LTTNG_DOMAIN_JUL: + { + struct lttng_event uevent, event; + struct lttng_domain tmp_dom; + struct ltt_ust_session *usess = session->ust_session; + + assert(usess); + + /* Create the default JUL tracepoint. */ + uevent.type = LTTNG_EVENT_TRACEPOINT; + uevent.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; + if (is_root) { + strncpy(uevent.name, DEFAULT_SYS_JUL_EVENT_NAME, + sizeof(uevent.name)); + } else { + strncpy(uevent.name, DEFAULT_USER_JUL_EVENT_NAME, + sizeof(uevent.name)); + } + uevent.name[sizeof(uevent.name) - 1] = '\0'; + + /* + * The domain type is changed because we are about to enable the + * default channel and event for the JUL domain that are hardcoded. + * This happens in the UST domain. + */ + memcpy(&tmp_dom, domain, sizeof(tmp_dom)); + tmp_dom.type = LTTNG_DOMAIN_UST; + + ret = cmd_enable_event(session, &tmp_dom, DEFAULT_JUL_CHANNEL_NAME, + &uevent, NULL, NULL, NULL, wpipe); + if (ret != LTTNG_OK && ret != LTTNG_ERR_UST_EVENT_ENABLED) { + goto error; + } + + event.loglevel = LTTNG_LOGLEVEL_JUL_ALL; + event.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; + strncpy(event.name, "*", sizeof(event.name)); + event.name[sizeof(event.name) - 1] = '\0'; + + ret = event_jul_enable_all(usess, &event); + if (ret != LTTNG_OK) { + goto error; + } + break; } #if 0 @@ -1447,6 +1725,13 @@ ssize_t cmd_list_tracepoints(int domain, struct lttng_event **events) goto error; } break; + case LTTNG_DOMAIN_JUL: + nb_events = jul_list_events(events); + if (nb_events < 0) { + ret = LTTNG_ERR_UST_LIST_FAIL; + goto error; + } + break; default: ret = LTTNG_ERR_UND; goto error; @@ -1495,6 +1780,7 @@ error: int cmd_start_trace(struct ltt_session *session) { int ret; + unsigned long nb_chan = 0; struct ltt_kernel_session *ksession; struct ltt_ust_session *usess; @@ -1504,13 +1790,26 @@ int cmd_start_trace(struct ltt_session *session) ksession = session->kernel_session; usess = session->ust_session; - if (session->enabled) { - /* Already started. */ + /* Is the session already started? */ + if (session->active) { ret = LTTNG_ERR_TRACE_ALREADY_STARTED; goto error; } - session->enabled = 1; + /* + * Starting a session without channel is useless since after that it's not + * possible to enable channel thus inform the client. + */ + if (usess && usess->domain_global.channels) { + nb_chan += lttng_ht_get_count(usess->domain_global.channels); + } + if (ksession) { + nb_chan += ksession->channel_count; + } + if (!nb_chan) { + ret = LTTNG_ERR_NO_CHANNEL; + goto error; + } /* Kernel tracing */ if (ksession != NULL) { @@ -1522,7 +1821,11 @@ int cmd_start_trace(struct ltt_session *session) /* Flag session that trace should start automatically */ if (usess) { - usess->start_trace = 1; + /* + * Even though the start trace might fail, flag this session active so + * other application coming in are started by default. + */ + usess->active = 1; ret = ust_app_start_trace_all(usess); if (ret < 0) { @@ -1531,7 +1834,9 @@ int cmd_start_trace(struct ltt_session *session) } } - session->started = 1; + /* Flag this after a successful start. */ + session->has_been_started = 1; + session->active = 1; ret = LTTNG_OK; @@ -1555,15 +1860,14 @@ int cmd_stop_trace(struct ltt_session *session) ksession = session->kernel_session; usess = session->ust_session; - if (!session->enabled) { + /* Session is not active. Skip everythong and inform the client. */ + if (!session->active) { ret = LTTNG_ERR_TRACE_ALREADY_STOPPED; goto error; } - session->enabled = 0; - /* Kernel tracer */ - if (ksession && ksession->started) { + if (ksession && ksession->active) { DBG("Stop kernel tracing"); /* Flush metadata if exist */ @@ -1590,11 +1894,15 @@ int cmd_stop_trace(struct ltt_session *session) kernel_wait_quiescent(kernel_tracer_fd); - ksession->started = 0; + ksession->active = 0; } - if (usess && usess->start_trace) { - usess->start_trace = 0; + if (usess && usess->active) { + /* + * Even though the stop trace might fail, flag this session inactive so + * other application coming in are not started by default. + */ + usess->active = 0; ret = ust_app_stop_trace_all(usess); if (ret < 0) { @@ -1603,6 +1911,8 @@ int cmd_stop_trace(struct ltt_session *session) } } + /* Flag inactive after a successful stop. */ + session->active = 0; ret = LTTNG_OK; error: @@ -1624,8 +1934,8 @@ int cmd_set_consumer_uri(int domain, struct ltt_session *session, assert(uris); assert(nb_uri > 0); - /* Can't enable consumer after session started. */ - if (session->enabled) { + /* Can't set consumer URI if the session is active. */ + if (session->active) { ret = LTTNG_ERR_TRACE_ALREADY_STARTED; goto error; } @@ -1676,7 +1986,7 @@ error: * Command LTTNG_CREATE_SESSION processed by the client thread. */ int cmd_create_session_uri(char *name, struct lttng_uri *uris, - size_t nb_uri, lttng_sock_cred *creds) + size_t nb_uri, lttng_sock_cred *creds, unsigned int live_timer) { int ret; struct ltt_session *session; @@ -1714,6 +2024,7 @@ int cmd_create_session_uri(char *name, struct lttng_uri *uris, session = session_find_by_name(name); assert(session); + session->live_timer = live_timer; /* Create default consumer output for the session not yet created. */ session->consumer = consumer_create_output(CONSUMER_DST_LOCAL); if (session->consumer == NULL) { @@ -1760,7 +2071,7 @@ int cmd_create_session_snapshot(char *name, struct lttng_uri *uris, * Create session in no output mode with URIs set to NULL. The uris we've * received are for a default snapshot output if one. */ - ret = cmd_create_session_uri(name, NULL, 0, creds); + ret = cmd_create_session_uri(name, NULL, 0, creds, -1); if (ret != LTTNG_OK) { goto error; } @@ -1868,7 +2179,14 @@ int cmd_calibrate(int domain, struct lttng_calibrate *calibrate) { struct lttng_kernel_calibrate kcalibrate; - kcalibrate.type = calibrate->type; + switch (calibrate->type) { + case LTTNG_CALIBRATE_FUNCTION: + default: + /* Default and only possible calibrate option. */ + kcalibrate.type = LTTNG_KERNEL_CALIBRATE_KRETPROBE; + break; + } + ret = kernel_calibrate(kernel_tracer_fd, &kcalibrate); if (ret < 0) { ret = LTTNG_ERR_KERN_ENABLE_FAIL; @@ -1880,7 +2198,14 @@ int cmd_calibrate(int domain, struct lttng_calibrate *calibrate) { struct lttng_ust_calibrate ucalibrate; - ucalibrate.type = calibrate->type; + switch (calibrate->type) { + case LTTNG_CALIBRATE_FUNCTION: + default: + /* Default and only possible calibrate option. */ + ucalibrate.type = LTTNG_UST_CALIBRATE_TRACEPOINT; + break; + } + ret = ust_app_calibrate_glb(&ucalibrate); if (ret < 0) { ret = LTTNG_ERR_UST_CALIBRATE_FAIL; @@ -1930,13 +2255,15 @@ int cmd_register_consumer(struct ltt_session *session, int domain, ret = LTTNG_ERR_CONNECT_FAIL; goto error; } + cdata->cmd_sock = sock; - socket = consumer_allocate_socket(sock); + socket = consumer_allocate_socket(&cdata->cmd_sock); if (socket == NULL) { ret = close(sock); if (ret < 0) { PERROR("close register consumer"); } + cdata->cmd_sock = -1; ret = LTTNG_ERR_FATAL; goto error; } @@ -1992,6 +2319,10 @@ ssize_t cmd_list_domains(struct ltt_session *session, if (session->ust_session != NULL) { DBG3("Listing domains found UST global domain"); nb_dom++; + + if (session->ust_session->domain_jul.being_used) { + nb_dom++; + } } *domains = zmalloc(nb_dom * sizeof(struct lttng_domain)); @@ -2009,6 +2340,12 @@ ssize_t cmd_list_domains(struct ltt_session *session, (*domains)[index].type = LTTNG_DOMAIN_UST; (*domains)[index].buf_type = session->ust_session->buffer_type; index++; + + if (session->ust_session->domain_jul.being_used) { + (*domains)[index].type = LTTNG_DOMAIN_JUL; + (*domains)[index].buf_type = session->ust_session->buffer_type; + index++; + } } return nb_dom; @@ -2099,6 +2436,12 @@ ssize_t cmd_list_events(int domain, struct ltt_session *session, } break; } + case LTTNG_DOMAIN_JUL: + if (session->ust_session) { + nb_event = list_lttng_jul_events( + &session->ust_session->domain_jul, events); + } + break; default: ret = LTTNG_ERR_UND; goto error; @@ -2159,14 +2502,16 @@ void cmd_list_lttng_sessions(struct lttng_session *sessions, uid_t uid, strncpy(sessions[i].name, session->name, NAME_MAX); sessions[i].name[NAME_MAX - 1] = '\0'; - sessions[i].enabled = session->enabled; + sessions[i].enabled = session->active; + sessions[i].snapshot_mode = session->snapshot_mode; + sessions[i].live_timer_interval = session->live_timer; i++; } } /* * Command LTTNG_DATA_PENDING returning 0 if the data is NOT pending meaning - * ready for trace analysis (or anykind of reader) or else 1 for pending data. + * ready for trace analysis (or any kind of reader) or else 1 for pending data. */ int cmd_data_pending(struct ltt_session *session) { @@ -2177,9 +2522,24 @@ int cmd_data_pending(struct ltt_session *session) assert(session); /* Session MUST be stopped to ask for data availability. */ - if (session->enabled) { + if (session->active) { ret = LTTNG_ERR_SESSION_STARTED; goto error; + } else { + /* + * If stopped, just make sure we've started before else the above call + * will always send that there is data pending. + * + * The consumer assumes that when the data pending command is received, + * the trace has been started before or else no output data is written + * by the streams which is a condition for data pending. So, this is + * *VERY* important that we don't ask the consumer before a start + * trace. + */ + if (!session->has_been_started) { + ret = 0; + goto error; + } } if (ksess && ksess->consumer) { @@ -2222,8 +2582,8 @@ int cmd_snapshot_add_output(struct ltt_session *session, DBG("Cmd snapshot add output for session %s", session->name); /* - * Persmission denied to create an output if the session is not set in no - * output mode. + * Permission denied to create an output if the session is not + * set in no output mode. */ if (session->output_traces) { ret = LTTNG_ERR_EPERM; @@ -2278,26 +2638,31 @@ int cmd_snapshot_del_output(struct ltt_session *session, struct lttng_snapshot_output *output) { int ret; - struct snapshot_output *sout; + struct snapshot_output *sout = NULL; assert(session); assert(output); - DBG("Cmd snapshot del output id %" PRIu32 " for session %s", output->id, - session->name); - rcu_read_lock(); /* - * Persmission denied to create an output if the session is not set in no - * output mode. + * Permission denied to create an output if the session is not + * set in no output mode. */ if (session->output_traces) { ret = LTTNG_ERR_EPERM; goto error; } - sout = snapshot_find_output_by_id(output->id, &session->snapshot); + if (output->id) { + DBG("Cmd snapshot del output id %" PRIu32 " for session %s", output->id, + session->name); + sout = snapshot_find_output_by_id(output->id, &session->snapshot); + } else if (*output->name != '\0') { + DBG("Cmd snapshot del output name %s for session %s", output->name, + session->name); + sout = snapshot_find_output_by_name(output->name, &session->snapshot); + } if (!sout) { ret = LTTNG_ERR_INVALID; goto error; @@ -2333,8 +2698,8 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session, DBG("Cmd snapshot list outputs for session %s", session->name); /* - * Persmission denied to create an output if the session is not set in no - * output mode. + * Permission denied to create an output if the session is not + * set in no output mode. */ if (session->output_traces) { ret = LTTNG_ERR_EPERM; @@ -2395,12 +2760,12 @@ error: * Send relayd sockets from snapshot output to consumer. Ignore request if the * snapshot output is *not* set with a remote destination. * - * Return 0 on success or else a negative value. + * Return 0 on success or a LTTNG_ERR code. */ static int set_relayd_for_snapshot(struct consumer_output *consumer, struct snapshot_output *snap_output, struct ltt_session *session) { - int ret = 0; + int ret = LTTNG_OK; struct lttng_ht_iter iter; struct consumer_socket *socket; @@ -2423,8 +2788,10 @@ static int set_relayd_for_snapshot(struct consumer_output *consumer, cds_lfht_for_each_entry(snap_output->consumer->socks->ht, &iter.iter, socket, node.node) { ret = send_consumer_relayd_sockets(0, session->id, - snap_output->consumer, socket); - if (ret < 0) { + snap_output->consumer, socket, + session->name, session->hostname, + session->live_timer); + if (ret != LTTNG_OK) { rcu_read_unlock(); goto error; } @@ -2438,7 +2805,7 @@ error: /* * Record a kernel snapshot. * - * Return 0 on success or else a negative value. + * Return LTTNG_OK on success or a LTTNG_ERR code. */ static int record_kernel_snapshot(struct ltt_kernel_session *ksess, struct snapshot_output *output, struct ltt_session *session, @@ -2454,7 +2821,7 @@ static int record_kernel_snapshot(struct ltt_kernel_session *ksess, ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime, sizeof(output->datetime)); if (!ret) { - ret = -EINVAL; + ret = LTTNG_ERR_INVALID; goto error; } @@ -2464,23 +2831,22 @@ static int record_kernel_snapshot(struct ltt_kernel_session *ksess, */ ret = consumer_copy_sockets(output->consumer, ksess->consumer); if (ret < 0) { + ret = LTTNG_ERR_NOMEM; goto error; } ret = set_relayd_for_snapshot(ksess->consumer, output, session); - if (ret < 0) { + if (ret != LTTNG_OK) { goto error_snapshot; } ret = kernel_snapshot_record(ksess, output, wait, nb_streams); - if (ret < 0) { - ret = -LTTNG_ERR_SNAPSHOT_FAIL; - if (ret == -EINVAL) { - ret = -LTTNG_ERR_INVALID; - } + if (ret != LTTNG_OK) { goto error_snapshot; } + ret = LTTNG_OK; + error_snapshot: /* Clean up copied sockets so this output can use some other later on. */ consumer_destroy_output_sockets(output->consumer); @@ -2491,7 +2857,7 @@ error: /* * Record a UST snapshot. * - * Return 0 on success or else a negative value. + * Return 0 on success or a LTTNG_ERR error code. */ static int record_ust_snapshot(struct ltt_ust_session *usess, struct snapshot_output *output, struct ltt_session *session, @@ -2507,33 +2873,43 @@ static int record_ust_snapshot(struct ltt_ust_session *usess, ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime, sizeof(output->datetime)); if (!ret) { - ret = -EINVAL; + ret = LTTNG_ERR_INVALID; goto error; } /* - * Copy kernel session sockets so we can communicate with the right + * Copy UST session sockets so we can communicate with the right * consumer for the snapshot record command. */ ret = consumer_copy_sockets(output->consumer, usess->consumer); if (ret < 0) { + ret = LTTNG_ERR_NOMEM; goto error; } ret = set_relayd_for_snapshot(usess->consumer, output, session); - if (ret < 0) { + if (ret != LTTNG_OK) { goto error_snapshot; } ret = ust_app_snapshot_record(usess, output, wait, nb_streams); if (ret < 0) { - ret = -LTTNG_ERR_SNAPSHOT_FAIL; - if (ret == -EINVAL) { - ret = -LTTNG_ERR_INVALID; + switch (-ret) { + case EINVAL: + ret = LTTNG_ERR_INVALID; + break; + case ENODATA: + ret = LTTNG_ERR_SNAPSHOT_NODATA; + break; + default: + ret = LTTNG_ERR_SNAPSHOT_FAIL; + break; } goto error_snapshot; } + ret = LTTNG_OK; + error_snapshot: /* Clean up copied sockets so this output can use some other later on. */ consumer_destroy_output_sockets(output->consumer); @@ -2578,15 +2954,15 @@ int cmd_snapshot_record(struct ltt_session *session, int ret = LTTNG_OK; unsigned int use_tmp_output = 0; struct snapshot_output tmp_output; - unsigned int nb_streams; + unsigned int nb_streams, snapshot_success = 0; assert(session); DBG("Cmd snapshot record for session %s", session->name); /* - * Persmission denied to create an output if the session is not set in no - * output mode. + * Permission denied to create an output if the session is not + * set in no output mode. */ if (session->output_traces) { ret = LTTNG_ERR_EPERM; @@ -2594,7 +2970,7 @@ int cmd_snapshot_record(struct ltt_session *session, } /* The session needs to be started at least once. */ - if (!session->started) { + if (!session->has_been_started) { ret = LTTNG_ERR_START_SESSION_ONCE; goto error; } @@ -2612,6 +2988,8 @@ int cmd_snapshot_record(struct ltt_session *session, } goto error; } + /* Use the global session count for the temporary snapshot. */ + tmp_output.nb_snapshot = session->snapshot.nb_snapshot; use_tmp_output = 1; } @@ -2627,9 +3005,10 @@ int cmd_snapshot_record(struct ltt_session *session, if (use_tmp_output) { ret = record_kernel_snapshot(ksess, &tmp_output, session, wait, nb_streams); - if (ret < 0) { + if (ret != LTTNG_OK) { goto error; } + snapshot_success = 1; } else { struct snapshot_output *sout; struct lttng_ht_iter iter; @@ -2655,12 +3034,15 @@ int cmd_snapshot_record(struct ltt_session *session, sizeof(tmp_output.name)); } + tmp_output.nb_snapshot = session->snapshot.nb_snapshot; + ret = record_kernel_snapshot(ksess, &tmp_output, session, wait, nb_streams); - if (ret < 0) { + if (ret != LTTNG_OK) { rcu_read_unlock(); goto error; } + snapshot_success = 1; } rcu_read_unlock(); } @@ -2672,9 +3054,10 @@ int cmd_snapshot_record(struct ltt_session *session, if (use_tmp_output) { ret = record_ust_snapshot(usess, &tmp_output, session, wait, nb_streams); - if (ret < 0) { + if (ret != LTTNG_OK) { goto error; } + snapshot_success = 1; } else { struct snapshot_output *sout; struct lttng_ht_iter iter; @@ -2689,8 +3072,6 @@ int cmd_snapshot_record(struct ltt_session *session, memset(&tmp_output, 0, sizeof(tmp_output)); memcpy(&tmp_output, sout, sizeof(tmp_output)); - fprintf(stderr, "Name: %s\n", output->name); - /* Use temporary max size. */ if (output->max_size != (uint64_t) -1ULL) { tmp_output.max_size = output->max_size; @@ -2702,17 +3083,26 @@ int cmd_snapshot_record(struct ltt_session *session, sizeof(tmp_output.name)); } + tmp_output.nb_snapshot = session->snapshot.nb_snapshot; + ret = record_ust_snapshot(usess, &tmp_output, session, wait, nb_streams); - if (ret < 0) { + if (ret != LTTNG_OK) { rcu_read_unlock(); goto error; } + snapshot_success = 1; } rcu_read_unlock(); } } + if (snapshot_success) { + session->snapshot.nb_snapshot++; + } else { + ret = LTTNG_ERR_SNAPSHOT_FAIL; + } + error: return ret; }