#include <common/relayd/relayd.h>
#include <common/utils.h>
#include <common/compat/string.h>
+#include <common/kernel-ctl/kernel-ctl.h>
#include "channel.h"
#include "consumer.h"
#include "utils.h"
#include "syscall.h"
#include "agent.h"
+#include "buffer-registry.h"
#include "cmd.h"
return ret;
}
+/*
+ * Get run-time attributes if the session has been started (discarded events,
+ * lost packets).
+ */
+static int get_kernel_runtime_stats(struct ltt_session *session,
+ struct ltt_kernel_channel *kchan, uint64_t *discarded_events,
+ uint64_t *lost_packets)
+{
+ int ret;
+
+ if (!session->has_been_started) {
+ ret = 0;
+ *discarded_events = 0;
+ *lost_packets = 0;
+ goto end;
+ }
+
+ ret = consumer_get_discarded_events(session->id, kchan->fd,
+ session->kernel_session->consumer,
+ discarded_events);
+ if (ret < 0) {
+ goto end;
+ }
+
+ ret = consumer_get_lost_packets(session->id, kchan->fd,
+ session->kernel_session->consumer,
+ lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+/*
+ * Get run-time attributes if the session has been started (discarded events,
+ * lost packets).
+ */
+static int get_ust_runtime_stats(struct ltt_session *session,
+ struct ltt_ust_channel *uchan, uint64_t *discarded_events,
+ uint64_t *lost_packets)
+{
+ int ret;
+ struct ltt_ust_session *usess;
+
+ if (!discarded_events || !lost_packets) {
+ ret = -1;
+ goto end;
+ }
+
+ usess = session->ust_session;
+ assert(discarded_events);
+ assert(lost_packets);
+
+ if (!usess || !session->has_been_started) {
+ *discarded_events = 0;
+ *lost_packets = 0;
+ ret = 0;
+ goto end;
+ }
+
+ if (usess->buffer_type == LTTNG_BUFFER_PER_UID) {
+ ret = ust_app_uid_get_channel_runtime_stats(usess->id,
+ &usess->buffer_reg_uid_list,
+ usess->consumer, uchan->id,
+ uchan->attr.overwrite,
+ discarded_events,
+ lost_packets);
+ } else if (usess->buffer_type == LTTNG_BUFFER_PER_PID) {
+ ret = ust_app_pid_get_channel_runtime_stats(usess,
+ uchan, usess->consumer,
+ uchan->attr.overwrite,
+ discarded_events,
+ lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
+ *discarded_events += uchan->per_pid_closed_app_discarded;
+ *lost_packets += uchan->per_pid_closed_app_lost;
+ } else {
+ ERR("Unsupported buffer type");
+ assert(0);
+ ret = -1;
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
/*
* Fill lttng_channel array of all channels.
*/
static void list_lttng_channels(enum lttng_domain_type domain,
- struct ltt_session *session, struct lttng_channel *channels)
+ struct ltt_session *session, struct lttng_channel *channels,
+ struct lttcomm_channel_extended *chan_exts)
{
- int i = 0;
+ int i = 0, ret;
struct ltt_kernel_channel *kchan;
DBG("Listing channels for session %s", session->name);
if (session->kernel_session != NULL) {
cds_list_for_each_entry(kchan,
&session->kernel_session->channel_list.head, list) {
+ uint64_t discarded_events, lost_packets;
+
+ ret = get_kernel_runtime_stats(session, kchan,
+ &discarded_events, &lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
/* Copy lttng_channel struct to array */
memcpy(&channels[i], kchan->channel, sizeof(struct lttng_channel));
channels[i].enabled = kchan->enabled;
+ chan_exts[i].discarded_events =
+ discarded_events;
+ chan_exts[i].lost_packets = lost_packets;
i++;
}
}
rcu_read_lock();
cds_lfht_for_each_entry(session->ust_session->domain_global.channels->ht,
&iter.iter, uchan, node.node) {
+ uint64_t discarded_events = 0, lost_packets = 0;
+
strncpy(channels[i].name, uchan->name, LTTNG_SYMBOL_NAME_LEN);
channels[i].attr.overwrite = uchan->attr.overwrite;
channels[i].attr.subbuf_size = uchan->attr.subbuf_size;
channels[i].enabled = uchan->enabled;
channels[i].attr.tracefile_size = uchan->tracefile_size;
channels[i].attr.tracefile_count = uchan->tracefile_count;
+
+ /*
+ * Map enum lttng_ust_output to enum lttng_event_output.
+ */
switch (uchan->attr.output) {
case LTTNG_UST_MMAP:
- default:
channels[i].attr.output = LTTNG_EVENT_MMAP;
break;
+ default:
+ /*
+ * LTTNG_UST_MMAP is the only supported UST
+ * output mode.
+ */
+ assert(0);
+ break;
+ }
+
+ ret = get_ust_runtime_stats(session, uchan,
+ &discarded_events, &lost_packets);
+ if (ret < 0) {
+ break;
}
+ chan_exts[i].discarded_events = discarded_events;
+ chan_exts[i].lost_packets = lost_packets;
i++;
}
rcu_read_unlock();
default:
break;
}
+
+end:
+ return;
}
static void increment_extended_len(const char *filter_expression,
if (nb_event == 0) {
*total_size = 0;
*events = NULL;
- goto syscall;
+ goto end;
}
/* Compute required extended infos size */
goto error;
}
- extended_at = ((uint8_t *) events) +
+ extended_at = ((void *) *events) +
nb_event * sizeof(struct lttng_event);
/* Kernel channels */
&extended_at);
}
-syscall:
- if (syscall_table) {
- ssize_t new_size;
-
- new_size = syscall_list_channel(kchan, events, nb_event);
- if (new_size < 0) {
- free(events);
- ret = -new_size;
- goto error;
- }
- nb_event = new_size;
- }
-
+end:
return nb_event;
error:
DBG2("Setting trace directory path from URI to %s", uri->dst.path);
memset(consumer->dst.trace_path, 0,
sizeof(consumer->dst.trace_path));
- strncpy(consumer->dst.trace_path, uri->dst.path,
- sizeof(consumer->dst.trace_path));
+ /* Explicit length checks for strcpy and strcat. */
+ if (strlen(uri->dst.path) + strlen(default_trace_dir)
+ >= sizeof(consumer->dst.trace_path)) {
+ ret = LTTNG_ERR_FATAL;
+ goto error;
+ }
+ strcpy(consumer->dst.trace_path, uri->dst.path);
/* Append default trace dir */
- strncat(consumer->dst.trace_path, default_trace_dir,
- sizeof(consumer->dst.trace_path) -
- strlen(consumer->dst.trace_path) - 1);
+ strcat(consumer->dst.trace_path, default_trace_dir);
/* Flag consumer as local. */
consumer->type = CONSUMER_DST_LOCAL;
break;
* Else, it's stays untouched and a lttcomm error code is returned.
*/
static int create_connect_relayd(struct lttng_uri *uri,
- struct lttcomm_relayd_sock **relayd_sock)
+ struct lttcomm_relayd_sock **relayd_sock,
+ struct consumer_output *consumer)
{
int ret;
struct lttcomm_relayd_sock *rsock;
ret = LTTNG_ERR_RELAYD_VERSION_FAIL;
goto close_sock;
}
+ consumer->relay_major_version = rsock->major;
+ consumer->relay_minor_version = rsock->minor;
} else if (uri->stype == LTTNG_STREAM_DATA) {
DBG3("Creating relayd data socket from URI");
} else {
struct lttcomm_relayd_sock *rsock = NULL;
/* Connect to relayd and make version check if uri is the control. */
- ret = create_connect_relayd(relayd_uri, &rsock);
+ ret = create_connect_relayd(relayd_uri, &rsock, consumer);
if (ret != LTTNG_OK) {
goto error;
}
/* Session is now ready for network streaming. */
session->net_handle = 1;
}
+ session->consumer->relay_major_version =
+ usess->consumer->relay_major_version;
+ session->consumer->relay_minor_version =
+ usess->consumer->relay_minor_version;
}
if (ksess && ksess->consumer && ksess->consumer->type == CONSUMER_DST_NET
/* Session is now ready for network streaming. */
session->net_handle = 1;
}
+ session->consumer->relay_major_version =
+ ksess->consumer->relay_major_version;
+ session->consumer->relay_minor_version =
+ ksess->consumer->relay_minor_version;
}
error:
int wpipe, bool internal_event)
{
int ret, channel_created = 0;
- struct lttng_channel *attr;
+ struct lttng_channel *attr = NULL;
assert(session);
assert(event);
ret = LTTNG_ERR_FATAL;
goto error;
}
- strncpy(attr->name, channel_name, sizeof(attr->name));
+ if (lttng_strncpy(attr->name, channel_name,
+ sizeof(attr->name))) {
+ ret = LTTNG_ERR_INVALID;
+ goto error;
+ }
ret = cmd_enable_channel(session, domain, attr, wpipe);
if (ret != LTTNG_OK) {
- free(attr);
goto error;
}
- free(attr);
-
channel_created = 1;
}
ret = LTTNG_ERR_FATAL;
goto error;
}
- strncpy(attr->name, channel_name, sizeof(attr->name));
+ if (lttng_strncpy(attr->name, channel_name,
+ sizeof(attr->name))) {
+ ret = LTTNG_ERR_INVALID;
+ goto error;
+ }
ret = cmd_enable_channel(session, domain, attr, wpipe);
if (ret != LTTNG_OK) {
- free(attr);
goto error;
}
- free(attr);
/* Get the newly created channel reference back */
uchan = trace_ust_find_channel_by_name(
free(filter_expression);
free(filter);
free(exclusion);
+ free(attr);
rcu_read_unlock();
return ret;
}
return ret;
}
+/*
+ * Check if we can regenerate the metadata for this session.
+ * Only kernel, UST per-uid and non-live sessions are supported.
+ *
+ * Return 0 if the metadata can be generated, a LTTNG_ERR code otherwise.
+ */
+static
+int check_metadata_regenerate_support(struct ltt_session *session)
+{
+ int ret;
+
+ assert(session);
+
+ if (session->live_timer != 0) {
+ ret = LTTNG_ERR_LIVE_SESSION;
+ goto end;
+ }
+ if (!session->active) {
+ ret = LTTNG_ERR_SESSION_NOT_STARTED;
+ goto end;
+ }
+ if (session->ust_session) {
+ switch (session->ust_session->buffer_type) {
+ case LTTNG_BUFFER_PER_UID:
+ break;
+ case LTTNG_BUFFER_PER_PID:
+ ret = LTTNG_ERR_PER_PID_SESSION;
+ goto end;
+ default:
+ assert(0);
+ ret = LTTNG_ERR_UNK;
+ goto end;
+ }
+ }
+ if (session->consumer->type == CONSUMER_DST_NET &&
+ session->consumer->relay_minor_version < 8) {
+ ret = LTTNG_ERR_RELAYD_VERSION_FAIL;
+ goto end;
+ }
+ ret = 0;
+
+end:
+ return ret;
+}
+
+static
+int ust_metadata_regenerate(struct ltt_ust_session *usess)
+{
+ int ret = 0;
+ struct buffer_reg_uid *uid_reg = NULL;
+ struct buffer_reg_session *session_reg = NULL;
+
+ rcu_read_lock();
+ cds_list_for_each_entry(uid_reg, &usess->buffer_reg_uid_list, lnode) {
+ struct ust_registry_session *registry;
+ struct ust_registry_channel *chan;
+ struct lttng_ht_iter iter_chan;
+
+ session_reg = uid_reg->registry;
+ registry = session_reg->reg.ust;
+
+ pthread_mutex_lock(®istry->lock);
+ registry->metadata_len_sent = 0;
+ memset(registry->metadata, 0, registry->metadata_alloc_len);
+ registry->metadata_len = 0;
+ registry->metadata_version++;
+ ret = ust_metadata_session_statedump(registry, NULL,
+ registry->major, registry->minor);
+ if (ret) {
+ pthread_mutex_unlock(®istry->lock);
+ ERR("Failed to generate session metadata (err = %d)",
+ ret);
+ goto end;
+ }
+ cds_lfht_for_each_entry(registry->channels->ht, &iter_chan.iter,
+ chan, node.node) {
+ struct ust_registry_event *event;
+ struct lttng_ht_iter iter_event;
+
+ ret = ust_metadata_channel_statedump(registry, chan);
+ if (ret) {
+ pthread_mutex_unlock(®istry->lock);
+ ERR("Failed to generate channel metadata "
+ "(err = %d)", ret);
+ goto end;
+ }
+ cds_lfht_for_each_entry(chan->ht->ht, &iter_event.iter,
+ event, node.node) {
+ ret = ust_metadata_event_statedump(registry,
+ chan, event);
+ if (ret) {
+ pthread_mutex_unlock(®istry->lock);
+ ERR("Failed to generate event metadata "
+ "(err = %d)", ret);
+ goto end;
+ }
+ }
+ }
+ pthread_mutex_unlock(®istry->lock);
+ }
+
+end:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Command LTTNG_METADATA_REGENERATE from the lttng-ctl library.
+ *
+ * Ask the consumer to truncate the existing metadata file(s) and
+ * 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.
+ */
+int cmd_metadata_regenerate(struct ltt_session *session)
+{
+ int ret;
+
+ assert(session);
+
+ ret = check_metadata_regenerate_support(session);
+ if (ret) {
+ goto end;
+ }
+
+ if (session->kernel_session) {
+ ret = kernctl_session_metadata_regenerate(
+ session->kernel_session->fd);
+ if (ret < 0) {
+ ERR("Failed to regenerate the kernel metadata");
+ goto end;
+ }
+ }
+
+ if (session->ust_session) {
+ ret = ust_metadata_regenerate(session->ust_session);
+ if (ret < 0) {
+ ERR("Failed to regenerate the UST metadata");
+ goto end;
+ }
+ }
+ DBG("Cmd metadata regenerate for session %s", session->name);
+ ret = LTTNG_OK;
+
+end:
+ return ret;
+}
+
+
/*
* Send relayd sockets from snapshot output to consumer. Ignore request if the
* snapshot output is *not* set with a remote destination.
assert(output);
assert(session);
- /* Get the datetime for the snapshot output directory. */
- ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime,
- sizeof(output->datetime));
- if (!ret) {
- ret = LTTNG_ERR_INVALID;
- goto error;
- }
/*
* Copy kernel session sockets so we can communicate with the right
assert(output);
assert(session);
- /* Get the datetime for the snapshot output directory. */
- ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime,
- sizeof(output->datetime));
- if (!ret) {
- ret = LTTNG_ERR_INVALID;
- goto error;
- }
-
/*
* Copy UST session sockets so we can communicate with the right
* consumer for the snapshot record command.
case EINVAL:
ret = LTTNG_ERR_INVALID;
break;
- case ENODATA:
- ret = LTTNG_ERR_SNAPSHOT_NODATA;
- break;
default:
ret = LTTNG_ERR_SNAPSHOT_FAIL;
break;
unsigned int use_tmp_output = 0;
struct snapshot_output tmp_output;
unsigned int snapshot_success = 0;
+ char datetime[16];
assert(session);
assert(output);
DBG("Cmd snapshot record for session %s", session->name);
+ /* Get the datetime for the snapshot output directory. */
+ ret = utils_get_current_time_str("%Y%m%d-%H%M%S", datetime,
+ sizeof(datetime));
+ if (!ret) {
+ ret = LTTNG_ERR_INVALID;
+ goto error;
+ }
+
/*
* Permission denied to create an output if the session is not
* set in no output mode.
}
/* Use the global session count for the temporary snapshot. */
tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
+
+ /* Use the global datetime */
+ memcpy(tmp_output.datetime, datetime, sizeof(datetime));
use_tmp_output = 1;
}
- if (session->kernel_session) {
- struct ltt_kernel_session *ksess = session->kernel_session;
+ if (use_tmp_output) {
+ int64_t nb_packets_per_stream;
- if (use_tmp_output) {
- int64_t nb_packets_per_stream;
+ nb_packets_per_stream = get_session_nb_packets_per_stream(session,
+ tmp_output.max_size);
+ if (nb_packets_per_stream < 0) {
+ ret = LTTNG_ERR_MAX_SIZE_INVALID;
+ goto error;
+ }
- nb_packets_per_stream = get_session_nb_packets_per_stream(session,
- tmp_output.max_size);
- if (nb_packets_per_stream < 0) {
- ret = LTTNG_ERR_MAX_SIZE_INVALID;
+ if (session->kernel_session) {
+ ret = record_kernel_snapshot(session->kernel_session,
+ &tmp_output, session,
+ wait, nb_packets_per_stream);
+ if (ret != LTTNG_OK) {
goto error;
}
- ret = record_kernel_snapshot(ksess, &tmp_output, session,
+ }
+
+ if (session->ust_session) {
+ ret = record_ust_snapshot(session->ust_session,
+ &tmp_output, session,
wait, nb_packets_per_stream);
if (ret != LTTNG_OK) {
goto error;
}
- snapshot_success = 1;
- } else {
- struct snapshot_output *sout;
- struct lttng_ht_iter iter;
-
- rcu_read_lock();
- cds_lfht_for_each_entry(session->snapshot.output_ht->ht,
- &iter.iter, sout, node.node) {
- int64_t nb_packets_per_stream;
-
- /*
- * Make a local copy of the output and assign the possible
- * temporary value given by the caller.
- */
- memset(&tmp_output, 0, sizeof(tmp_output));
- memcpy(&tmp_output, sout, sizeof(tmp_output));
-
- if (output->max_size != (uint64_t) -1ULL) {
- tmp_output.max_size = output->max_size;
- }
+ }
- nb_packets_per_stream = get_session_nb_packets_per_stream(session,
- tmp_output.max_size);
- if (nb_packets_per_stream < 0) {
- ret = LTTNG_ERR_MAX_SIZE_INVALID;
- goto error;
- }
+ snapshot_success = 1;
+ } else {
+ struct snapshot_output *sout;
+ struct lttng_ht_iter iter;
- /* Use temporary name. */
- if (*output->name != '\0') {
- strncpy(tmp_output.name, output->name,
- sizeof(tmp_output.name));
- }
+ rcu_read_lock();
+ cds_lfht_for_each_entry(session->snapshot.output_ht->ht,
+ &iter.iter, sout, node.node) {
+ int64_t nb_packets_per_stream;
- tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
+ /*
+ * Make a local copy of the output and assign the possible
+ * temporary value given by the caller.
+ */
+ memset(&tmp_output, 0, sizeof(tmp_output));
+ memcpy(&tmp_output, sout, sizeof(tmp_output));
- ret = record_kernel_snapshot(ksess, &tmp_output,
- session, wait, nb_packets_per_stream);
- if (ret != LTTNG_OK) {
- rcu_read_unlock();
- goto error;
- }
- snapshot_success = 1;
+ if (output->max_size != (uint64_t) -1ULL) {
+ tmp_output.max_size = output->max_size;
}
- rcu_read_unlock();
- }
- }
-
- if (session->ust_session) {
- struct ltt_ust_session *usess = session->ust_session;
-
- if (use_tmp_output) {
- int64_t nb_packets_per_stream;
nb_packets_per_stream = get_session_nb_packets_per_stream(session,
tmp_output.max_size);
if (nb_packets_per_stream < 0) {
ret = LTTNG_ERR_MAX_SIZE_INVALID;
+ rcu_read_unlock();
goto error;
}
- ret = record_ust_snapshot(usess, &tmp_output, session,
- wait, nb_packets_per_stream);
- if (ret != LTTNG_OK) {
- goto error;
- }
- snapshot_success = 1;
- } else {
- struct snapshot_output *sout;
- struct lttng_ht_iter iter;
-
- rcu_read_lock();
- cds_lfht_for_each_entry(session->snapshot.output_ht->ht,
- &iter.iter, sout, node.node) {
- int64_t nb_packets_per_stream;
- /*
- * Make a local copy of the output and assign the possible
- * temporary value given by the caller.
- */
- memset(&tmp_output, 0, sizeof(tmp_output));
- memcpy(&tmp_output, sout, sizeof(tmp_output));
+ /* Use temporary name. */
+ if (*output->name != '\0') {
+ strncpy(tmp_output.name, output->name,
+ sizeof(tmp_output.name));
+ }
- if (output->max_size != (uint64_t) -1ULL) {
- tmp_output.max_size = output->max_size;
- }
+ tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
+ memcpy(tmp_output.datetime, datetime, sizeof(datetime));
- nb_packets_per_stream = get_session_nb_packets_per_stream(session,
- tmp_output.max_size);
- if (nb_packets_per_stream < 0) {
- ret = LTTNG_ERR_MAX_SIZE_INVALID;
+ if (session->kernel_session) {
+ ret = record_kernel_snapshot(session->kernel_session,
+ &tmp_output, session,
+ wait, nb_packets_per_stream);
+ if (ret != LTTNG_OK) {
rcu_read_unlock();
goto error;
}
+ }
- /* Use temporary name. */
- if (*output->name != '\0') {
- strncpy(tmp_output.name, output->name,
- sizeof(tmp_output.name));
- }
-
- tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
-
- ret = record_ust_snapshot(usess, &tmp_output, session,
+ if (session->ust_session) {
+ ret = record_ust_snapshot(session->ust_session,
+ &tmp_output, session,
wait, nb_packets_per_stream);
if (ret != LTTNG_OK) {
rcu_read_unlock();
goto error;
}
- snapshot_success = 1;
}
- rcu_read_unlock();
+ snapshot_success = 1;
}
+ rcu_read_unlock();
}
if (snapshot_success) {
projects / lttng-tools.git / blobdiff