/*
- * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
- * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@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.
*/
+#include "bin/lttng-sessiond/tracker.h"
+#include "lttng/lttng-error.h"
+#include "lttng/tracker.h"
#define _LGPL_SOURCE
#include <assert.h>
#include <inttypes.h>
struct cmd_destroy_session_reply_context {
int reply_sock_fd;
bool implicit_rotation_on_destroy;
+ /*
+ * Indicates whether or not an error occurred while launching the
+ * destruction of a session.
+ */
+ enum lttng_error_code destruction_status;
};
static enum lttng_error_code wait_on_path(void *path);
static int validate_ust_event_name(const char *);
static int cmd_enable_event_internal(struct ltt_session *session,
- struct lttng_domain *domain,
+ const struct lttng_domain *domain,
char *channel_name, struct lttng_event *event,
char *filter_expression,
struct lttng_filter_bytecode *filter,
struct lttng_event_exclusion *exclusion,
int wpipe);
+static int cmd_enable_channel_internal(struct ltt_session *session,
+ const struct lttng_domain *domain,
+ const struct lttng_channel *_attr,
+ int wpipe);
/*
* Create a session path used by list_lttng_sessions for the case that the
return ret;
}
-/*
- * Fill lttng_channel array of all channels.
- */
-static ssize_t list_lttng_channels(enum lttng_domain_type domain,
- struct ltt_session *session, struct lttng_channel *channels,
- struct lttng_channel_extended *chan_exts)
-{
- int i = 0, ret = 0;
- struct ltt_kernel_channel *kchan;
-
- DBG("Listing channels for session %s", session->name);
-
- switch (domain) {
- case LTTNG_DOMAIN_KERNEL:
- /* Kernel channels */
- if (session->kernel_session != NULL) {
- cds_list_for_each_entry(kchan,
- &session->kernel_session->channel_list.head, list) {
- uint64_t discarded_events, lost_packets;
- struct lttng_channel_extended *extended;
-
- extended = (struct lttng_channel_extended *)
- kchan->channel->attr.extended.ptr;
-
- 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;
- chan_exts[i].monitor_timer_interval =
- extended->monitor_timer_interval;
- chan_exts[i].blocking_timeout = 0;
- i++;
- }
- }
- break;
- case LTTNG_DOMAIN_UST:
- {
- struct lttng_ht_iter iter;
- struct ltt_ust_channel *uchan;
-
- 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;
-
- if (lttng_strncpy(channels[i].name, uchan->name,
- LTTNG_SYMBOL_NAME_LEN)) {
- break;
- }
- channels[i].attr.overwrite = uchan->attr.overwrite;
- channels[i].attr.subbuf_size = uchan->attr.subbuf_size;
- channels[i].attr.num_subbuf = uchan->attr.num_subbuf;
- channels[i].attr.switch_timer_interval =
- uchan->attr.switch_timer_interval;
- 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;
-
- /*
- * Map enum lttng_ust_output to enum lttng_event_output.
- */
- switch (uchan->attr.output) {
- case LTTNG_UST_MMAP:
- channels[i].attr.output = LTTNG_EVENT_MMAP;
- break;
- default:
- /*
- * LTTNG_UST_MMAP is the only supported UST
- * output mode.
- */
- assert(0);
- break;
- }
-
- chan_exts[i].monitor_timer_interval =
- uchan->monitor_timer_interval;
- chan_exts[i].blocking_timeout =
- uchan->attr.u.s.blocking_timeout;
-
- 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();
- break;
- }
- default:
- break;
- }
-
-end:
- if (ret < 0) {
- return -LTTNG_ERR_FATAL;
- } else {
- return LTTNG_OK;
- }
-}
-
static int increment_extended_len(const char *filter_expression,
struct lttng_event_exclusion *exclusion,
const struct lttng_userspace_probe_location *probe_location,
rcu_read_lock();
nb_event = lttng_ht_get_count(agt->events);
- rcu_read_unlock();
if (nb_event == 0) {
ret = nb_event;
*total_size = 0;
* This is only valid because the commands which add events are
* processed in the same thread as the listing.
*/
- rcu_read_lock();
cds_lfht_for_each_entry(agt->events->ht, &iter.iter, event, node.node) {
ret = increment_extended_len(event->filter_expression, NULL, NULL,
&extended_len);
goto error;
}
}
- rcu_read_unlock();
*total_size = nb_event * sizeof(*tmp_events) + extended_len;
tmp_events = zmalloc(*total_size);
extended_at = ((uint8_t *) tmp_events) +
nb_event * sizeof(struct lttng_event);
- rcu_read_lock();
cds_lfht_for_each_entry(agt->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';
return nb_event;
error:
- /* Negate the error code to differentiate the size from an error */
- return -ret;
+ return ret;
}
/*
ret = lttng_strncpy(consumer->dst.session_root_path,
uri->dst.path,
sizeof(consumer->dst.session_root_path));
+ if (ret) {
+ ret_code = LTTNG_ERR_FATAL;
+ goto error;
+ }
consumer->type = CONSUMER_DST_LOCAL;
break;
}
/* Create socket for control stream. */
if (uri->stype == LTTNG_STREAM_CONTROL) {
+ uint64_t result_flags;
+
DBG3("Creating relayd stream socket from URI");
/* Check relayd version */
}
consumer->relay_major_version = rsock->major;
consumer->relay_minor_version = rsock->minor;
+ ret = relayd_get_configuration(rsock, 0,
+ &result_flags);
+ if (ret < 0) {
+ ERR("Unable to get relayd configuration");
+ status = LTTNG_ERR_RELAYD_CONNECT_FAIL;
+ goto close_sock;
+ }
+ if (result_flags & LTTCOMM_RELAYD_CONFIGURATION_FLAG_CLEAR_ALLOWED) {
+ consumer->relay_allows_clear = true;
+ }
} else if (uri->stype == LTTNG_STREAM_DATA) {
DBG3("Creating relayd data socket from URI");
} else {
struct consumer_output *consumer,
struct consumer_socket *consumer_sock,
const char *session_name, const char *hostname,
- int session_live_timer,
- const uint64_t *current_chunk_id)
+ const char *base_path, int session_live_timer,
+ const uint64_t *current_chunk_id,
+ time_t session_creation_time,
+ bool session_name_contains_creation_time)
{
int ret;
struct lttcomm_relayd_sock *rsock = NULL;
/* Send relayd socket to consumer. */
ret = consumer_send_relayd_socket(consumer_sock, rsock, consumer,
relayd_uri->stype, session_id,
- session_name, hostname, session_live_timer,
- current_chunk_id);
+ session_name, hostname, base_path,
+ session_live_timer, current_chunk_id,
+ session_creation_time, session_name_contains_creation_time);
if (ret < 0) {
status = LTTNG_ERR_ENABLE_CONSUMER_FAIL;
goto close_sock;
enum lttng_domain_type domain,
unsigned int session_id, struct consumer_output *consumer,
struct consumer_socket *sock, const char *session_name,
- const char *hostname, int session_live_timer,
- const uint64_t *current_chunk_id)
+ const char *hostname, const char *base_path, int session_live_timer,
+ const uint64_t *current_chunk_id, time_t session_creation_time,
+ bool session_name_contains_creation_time)
{
enum lttng_error_code status = LTTNG_OK;
if (!sock->control_sock_sent) {
status = send_consumer_relayd_socket(session_id,
&consumer->dst.net.control, consumer, sock,
- session_name, hostname, session_live_timer,
- current_chunk_id);
+ session_name, hostname, base_path, session_live_timer,
+ current_chunk_id, session_creation_time,
+ session_name_contains_creation_time);
if (status != LTTNG_OK) {
goto error;
}
if (!sock->data_sock_sent) {
status = send_consumer_relayd_socket(session_id,
&consumer->dst.net.data, consumer, sock,
- session_name, hostname, session_live_timer,
- current_chunk_id);
+ session_name, hostname, base_path, session_live_timer,
+ current_chunk_id, session_creation_time,
+ session_name_contains_creation_time);
if (status != LTTNG_OK) {
goto error;
}
DBG("Setting relayd for session %s", session->name);
+ rcu_read_lock();
if (session->current_trace_chunk) {
enum lttng_trace_chunk_status status = lttng_trace_chunk_get_id(
session->current_trace_chunk, ¤t_chunk_id.value);
}
}
- rcu_read_lock();
-
if (usess && usess->consumer && usess->consumer->type == CONSUMER_DST_NET
&& usess->consumer->enabled) {
/* For each consumer socket, send relayd sockets */
ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_UST, session->id,
usess->consumer, socket,
session->name, session->hostname,
+ session->base_path,
session->live_timer,
- current_chunk_id.is_set ? ¤t_chunk_id.value : NULL);
+ current_chunk_id.is_set ? ¤t_chunk_id.value : NULL,
+ session->creation_time,
+ session->name_contains_creation_time);
pthread_mutex_unlock(socket->lock);
if (ret != LTTNG_OK) {
goto error;
usess->consumer->relay_major_version;
session->consumer->relay_minor_version =
usess->consumer->relay_minor_version;
+ session->consumer->relay_allows_clear =
+ usess->consumer->relay_allows_clear;
}
if (ksess && ksess->consumer && ksess->consumer->type == CONSUMER_DST_NET
ret = send_consumer_relayd_sockets(LTTNG_DOMAIN_KERNEL, session->id,
ksess->consumer, socket,
session->name, session->hostname,
+ session->base_path,
session->live_timer,
- current_chunk_id.is_set ? ¤t_chunk_id.value : NULL);
+ current_chunk_id.is_set ? ¤t_chunk_id.value : NULL,
+ session->creation_time,
+ session->name_contains_creation_time);
pthread_mutex_unlock(socket->lock);
if (ret != LTTNG_OK) {
goto error;
ksess->consumer->relay_major_version;
session->consumer->relay_minor_version =
ksess->consumer->relay_minor_version;
+ session->consumer->relay_allows_clear =
+ ksess->consumer->relay_allows_clear;
}
error:
/*
* Start a kernel session by opening all necessary streams.
*/
-static int start_kernel_session(struct ltt_kernel_session *ksess, int wpipe)
+int start_kernel_session(struct ltt_kernel_session *ksess)
{
int ret;
struct ltt_kernel_channel *kchan;
}
/* Quiescent wait after starting trace */
- kernel_wait_quiescent(wpipe);
+ kernel_wait_quiescent();
ksess->active = 1;
return ret;
}
+int stop_kernel_session(struct ltt_kernel_session *ksess)
+{
+ struct ltt_kernel_channel *kchan;
+ bool error_occurred = false;
+ int ret;
+
+ if (!ksess || !ksess->active) {
+ return LTTNG_OK;
+ }
+ DBG("Stopping kernel tracing");
+
+ ret = kernel_stop_session(ksess);
+ if (ret < 0) {
+ ret = LTTNG_ERR_KERN_STOP_FAIL;
+ goto error;
+ }
+
+ kernel_wait_quiescent();
+
+ /* Flush metadata after stopping (if exists) */
+ if (ksess->metadata_stream_fd >= 0) {
+ ret = kernel_metadata_flush_buffer(ksess->metadata_stream_fd);
+ if (ret < 0) {
+ ERR("Kernel metadata flush failed");
+ error_occurred = true;
+ }
+ }
+
+ /* Flush all buffers after stopping */
+ cds_list_for_each_entry(kchan, &ksess->channel_list.head, list) {
+ ret = kernel_flush_buffer(kchan);
+ if (ret < 0) {
+ ERR("Kernel flush buffer error");
+ error_occurred = true;
+ }
+ }
+
+ ksess->active = 0;
+ if (error_occurred) {
+ ret = LTTNG_ERR_UNK;
+ } else {
+ ret = LTTNG_OK;
+ }
+error:
+ return ret;
+}
+
/*
* Command LTTNG_DISABLE_CHANNEL processed by the client thread.
*/
goto error;
}
- kernel_wait_quiescent(kernel_tracer_fd);
+ kernel_wait_quiescent();
break;
}
case LTTNG_DOMAIN_UST:
}
/*
- * Command LTTNG_TRACK_PID processed by the client thread.
+ * Command LTTNG_ENABLE_CHANNEL processed by the client thread.
*
- * Called with session lock held.
+ * The wpipe arguments is used as a notifier for the kernel thread.
*/
-int cmd_track_pid(struct ltt_session *session, enum lttng_domain_type domain,
- int pid)
+int cmd_enable_channel(struct command_ctx *cmd_ctx, int sock, int wpipe)
{
int ret;
+ size_t channel_len;
+ ssize_t sock_recv_len;
+ struct lttng_channel *channel = NULL;
+ struct lttng_buffer_view view;
+ struct lttng_dynamic_buffer channel_buffer;
- rcu_read_lock();
-
- switch (domain) {
- case LTTNG_DOMAIN_KERNEL:
- {
- struct ltt_kernel_session *ksess;
-
- ksess = session->kernel_session;
-
- ret = kernel_track_pid(ksess, pid);
- if (ret != LTTNG_OK) {
- goto error;
- }
-
- kernel_wait_quiescent(kernel_tracer_fd);
- break;
+ lttng_dynamic_buffer_init(&channel_buffer);
+ channel_len = (size_t) cmd_ctx->lsm->u.channel.length;
+ ret = lttng_dynamic_buffer_set_size(&channel_buffer, channel_len);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto end;
}
- case LTTNG_DOMAIN_UST:
- {
- struct ltt_ust_session *usess;
-
- usess = session->ust_session;
- ret = trace_ust_track_pid(usess, pid);
- if (ret != LTTNG_OK) {
- goto error;
- }
- break;
- }
- default:
- ret = LTTNG_ERR_UNKNOWN_DOMAIN;
- goto error;
+ sock_recv_len = lttcomm_recv_unix_sock(sock, channel_buffer.data,
+ channel_len);
+ if (sock_recv_len < 0 || sock_recv_len != channel_len) {
+ ERR("Failed to receive \"enable channel\" command payload");
+ ret = LTTNG_ERR_INVALID;
+ goto end;
}
- ret = LTTNG_OK;
-
-error:
- rcu_read_unlock();
- return ret;
-}
-
-/*
- * Command LTTNG_UNTRACK_PID processed by the client thread.
- *
- * Called with session lock held.
- */
-int cmd_untrack_pid(struct ltt_session *session, enum lttng_domain_type domain,
- int pid)
-{
- int ret;
-
- rcu_read_lock();
-
- switch (domain) {
- case LTTNG_DOMAIN_KERNEL:
- {
- struct ltt_kernel_session *ksess;
-
- ksess = session->kernel_session;
-
- ret = kernel_untrack_pid(ksess, pid);
- if (ret != LTTNG_OK) {
- goto error;
- }
-
- kernel_wait_quiescent(kernel_tracer_fd);
- break;
+ view = lttng_buffer_view_from_dynamic_buffer(&channel_buffer, 0, channel_len);
+ if (!lttng_buffer_view_is_valid(&view)) {
+ ret = LTTNG_ERR_INVALID;
+ goto end;
}
- case LTTNG_DOMAIN_UST:
- {
- struct ltt_ust_session *usess;
-
- usess = session->ust_session;
- ret = trace_ust_untrack_pid(usess, pid);
- if (ret != LTTNG_OK) {
- goto error;
- }
- break;
- }
- default:
- ret = LTTNG_ERR_UNKNOWN_DOMAIN;
- goto error;
+ if (lttng_channel_create_from_buffer(&view, &channel) != channel_len) {
+ ERR("Invalid channel payload received in \"enable channel\" command");
+ ret = LTTNG_ERR_INVALID;
+ goto end;
}
- ret = LTTNG_OK;
+ ret = cmd_enable_channel_internal(cmd_ctx->session,
+ ALIGNED_CONST_PTR(cmd_ctx->lsm->domain), channel,
+ wpipe);
-error:
- rcu_read_unlock();
+end:
+ lttng_dynamic_buffer_reset(&channel_buffer);
+ lttng_channel_destroy(channel);
return ret;
}
-/*
- * Command LTTNG_ENABLE_CHANNEL processed by the client thread.
- *
- * The wpipe arguments is used as a notifier for the kernel thread.
- */
-int cmd_enable_channel(struct ltt_session *session,
- struct lttng_domain *domain, struct lttng_channel *attr, int wpipe)
+static int cmd_enable_channel_internal(struct ltt_session *session,
+ const struct lttng_domain *domain,
+ const struct lttng_channel *_attr,
+ int wpipe)
{
int ret;
struct ltt_ust_session *usess = session->ust_session;
struct lttng_ht *chan_ht;
size_t len;
+ struct lttng_channel *attr = NULL;
assert(session);
- assert(attr);
+ assert(_attr);
assert(domain);
+ attr = lttng_channel_copy(_attr);
+ if (!attr) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
len = lttng_strnlen(attr->name, sizeof(attr->name));
/* Validate channel 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->has_been_started) {
- ret = LTTNG_ERR_TRACE_ALREADY_STARTED;
- goto error;
- }
-
/*
* If the session is a live session, remove the switch timer, the
* live timer does the same thing but sends also synchronisation
switch (domain->type) {
case LTTNG_DOMAIN_KERNEL:
{
- if (kernel_supports_ring_buffer_snapshot_sample_positions(kernel_tracer_fd) != 1) {
+ if (kernel_supports_ring_buffer_snapshot_sample_positions() != 1) {
/* Sampling position of buffer is not supported */
WARN("Kernel tracer does not support buffer monitoring. "
"Setting the monitor interval timer to 0 "
"(disabled) for channel '%s' of session '%s'",
- attr-> name, session->name);
+ attr->name, session->name);
lttng_channel_set_monitor_timer_interval(attr, 0);
}
break;
{
struct ltt_kernel_channel *kchan;
- kchan = trace_kernel_get_channel_by_name(attr->name,
- session->kernel_session);
+ kchan = trace_kernel_get_channel_by_name(
+ attr->name, session->kernel_session);
if (kchan == NULL) {
+ /*
+ * Don't try to create a channel if the session has been started at
+ * some point in time before. The tracer does not allow it.
+ */
+ if (session->has_been_started) {
+ ret = LTTNG_ERR_TRACE_ALREADY_STARTED;
+ goto error;
+ }
+
if (session->snapshot.nb_output > 0 ||
session->snapshot_mode) {
/* Enforce mmap output for snapshot sessions. */
attr->attr.output = LTTNG_EVENT_MMAP;
}
- ret = channel_kernel_create(session->kernel_session, attr, wpipe);
+ ret = channel_kernel_create(
+ session->kernel_session, attr, wpipe);
if (attr->name[0] != '\0') {
session->kernel_session->has_non_default_channel = 1;
}
goto error;
}
- kernel_wait_quiescent(kernel_tracer_fd);
+ kernel_wait_quiescent();
break;
}
case LTTNG_DOMAIN_UST:
uchan = trace_ust_find_channel_by_name(chan_ht, attr->name);
if (uchan == NULL) {
+ /*
+ * Don't try to create a channel if the session has been started at
+ * some point in time before. The tracer does not allow it.
+ */
+ if (session->has_been_started) {
+ ret = LTTNG_ERR_TRACE_ALREADY_STARTED;
+ goto error;
+ }
+
ret = channel_ust_create(usess, attr, domain->buf_type);
if (attr->name[0] != '\0') {
usess->has_non_default_channel = 1;
error:
rcu_read_unlock();
end:
+ lttng_channel_destroy(attr);
return ret;
}
-/*
- * Command LTTNG_DISABLE_EVENT processed by the client thread.
- */
-int cmd_disable_event(struct ltt_session *session,
- enum lttng_domain_type domain, char *channel_name,
- struct lttng_event *event)
+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)
{
- int ret;
- char *event_name;
-
- DBG("Disable event command for event \'%s\'", event->name);
-
- event_name = event->name;
+ enum lttng_error_code ret_code = LTTNG_OK;
+ const struct process_attr_tracker *tracker;
- /* Error out on unhandled search criteria */
- if (event->loglevel_type || event->loglevel != -1 || event->enabled
- || event->pid || event->filter || event->exclusion) {
- ret = LTTNG_ERR_UNK;
- goto error;
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (!session->kernel_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ tracker = kernel_get_process_attr_tracker(
+ session->kernel_session, process_attr);
+ break;
+ case LTTNG_DOMAIN_UST:
+ if (!session->ust_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ tracker = trace_ust_get_process_attr_tracker(
+ session->ust_session, process_attr);
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNSUPPORTED_DOMAIN;
+ goto end;
+ }
+ if (tracker) {
+ *policy = process_attr_tracker_get_tracking_policy(tracker);
+ } else {
+ ret_code = LTTNG_ERR_INVALID;
+ }
+end:
+ return ret_code;
+}
+
+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 ret_code = LTTNG_OK;
+
+ switch (policy) {
+ case LTTNG_TRACKING_POLICY_INCLUDE_SET:
+ case LTTNG_TRACKING_POLICY_EXCLUDE_ALL:
+ case LTTNG_TRACKING_POLICY_INCLUDE_ALL:
+ break;
+ default:
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (!session->kernel_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = kernel_process_attr_tracker_set_tracking_policy(
+ session->kernel_session, process_attr, policy);
+ break;
+ case LTTNG_DOMAIN_UST:
+ if (!session->ust_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = trace_ust_process_attr_tracker_set_tracking_policy(
+ session->ust_session, process_attr, policy);
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNSUPPORTED_DOMAIN;
+ break;
+ }
+end:
+ return ret_code;
+}
+
+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 ret_code = LTTNG_OK;
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (!session->kernel_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = kernel_process_attr_tracker_inclusion_set_add_value(
+ session->kernel_session, process_attr, value);
+ break;
+ case LTTNG_DOMAIN_UST:
+ if (!session->ust_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = trace_ust_process_attr_tracker_inclusion_set_add_value(
+ session->ust_session, process_attr, value);
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNSUPPORTED_DOMAIN;
+ break;
+ }
+end:
+ return ret_code;
+}
+
+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 ret_code = LTTNG_OK;
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (!session->kernel_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = kernel_process_attr_tracker_inclusion_set_remove_value(
+ session->kernel_session, process_attr, value);
+ break;
+ case LTTNG_DOMAIN_UST:
+ if (!session->ust_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ ret_code = trace_ust_process_attr_tracker_inclusion_set_remove_value(
+ session->ust_session, process_attr, value);
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNSUPPORTED_DOMAIN;
+ break;
+ }
+end:
+ return ret_code;
+}
+
+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)
+{
+ enum lttng_error_code ret_code = LTTNG_OK;
+ const struct process_attr_tracker *tracker;
+ enum process_attr_tracker_status status;
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (!session->kernel_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ tracker = kernel_get_process_attr_tracker(
+ session->kernel_session, process_attr);
+ break;
+ case LTTNG_DOMAIN_UST:
+ if (!session->ust_session) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+ tracker = trace_ust_get_process_attr_tracker(
+ session->ust_session, process_attr);
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNSUPPORTED_DOMAIN;
+ goto end;
+ }
+
+ if (!tracker) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ status = process_attr_tracker_get_inclusion_set(tracker, values);
+ switch (status) {
+ case PROCESS_ATTR_TRACKER_STATUS_OK:
+ ret_code = LTTNG_OK;
+ break;
+ case PROCESS_ATTR_TRACKER_STATUS_INVALID_TRACKING_POLICY:
+ ret_code = LTTNG_ERR_PROCESS_ATTR_TRACKER_INVALID_TRACKING_POLICY;
+ break;
+ case PROCESS_ATTR_TRACKER_STATUS_ERROR:
+ ret_code = LTTNG_ERR_NOMEM;
+ break;
+ default:
+ ret_code = LTTNG_ERR_UNK;
+ break;
+ }
+
+end:
+ return ret_code;
+}
+
+/*
+ * Command LTTNG_DISABLE_EVENT processed by the client thread.
+ */
+int cmd_disable_event(struct ltt_session *session,
+ enum lttng_domain_type domain, const char *channel_name,
+ const struct lttng_event *event)
+{
+ int ret;
+ const char *event_name;
+
+ DBG("Disable event command for event \'%s\'", event->name);
+
+ event_name = event->name;
+
+ /* Error out on unhandled search criteria */
+ if (event->loglevel_type || event->loglevel != -1 || event->enabled
+ || event->pid || event->filter || event->exclusion) {
+ ret = LTTNG_ERR_UNK;
+ goto error;
}
rcu_read_lock();
goto error_unlock;
}
- kernel_wait_quiescent(kernel_tracer_fd);
+ kernel_wait_quiescent();
break;
}
case LTTNG_DOMAIN_UST:
* Command LTTNG_ADD_CONTEXT processed by the client thread.
*/
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 ret, chan_kern_created = 0, chan_ust_created = 0;
char *app_ctx_provider_name = NULL, *app_ctx_name = NULL;
* enable the events through which all "agent" events are funeled.
*/
static int _cmd_enable_event(struct ltt_session *session,
- struct lttng_domain *domain,
+ const struct lttng_domain *domain,
char *channel_name, struct lttng_event *event,
char *filter_expression,
struct lttng_filter_bytecode *filter,
goto error;
}
- ret = cmd_enable_channel(session, domain, attr, wpipe);
+ ret = cmd_enable_channel_internal(
+ session, domain, attr, wpipe);
if (ret != LTTNG_OK) {
goto error;
}
goto error;
}
- kernel_wait_quiescent(kernel_tracer_fd);
+ kernel_wait_quiescent();
break;
}
case LTTNG_DOMAIN_UST:
goto error;
}
- ret = cmd_enable_channel(session, domain, attr, wpipe);
+ ret = cmd_enable_channel_internal(
+ session, domain, attr, wpipe);
if (ret != LTTNG_OK) {
goto error;
}
* Command LTTNG_ENABLE_EVENT processed by the client thread.
* We own filter, exclusion, and filter_expression.
*/
-int cmd_enable_event(struct ltt_session *session, struct lttng_domain *domain,
+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,
* reserved names.
*/
static int cmd_enable_event_internal(struct ltt_session *session,
- struct lttng_domain *domain,
+ const struct lttng_domain *domain,
char *channel_name, struct lttng_event *event,
char *filter_expression,
struct lttng_filter_bytecode *filter,
switch (domain) {
case LTTNG_DOMAIN_KERNEL:
- nb_events = kernel_list_events(kernel_tracer_fd, events);
+ nb_events = kernel_list_events(events);
if (nb_events < 0) {
ret = LTTNG_ERR_KERN_LIST_FAIL;
goto error;
return syscall_table_list(events);
}
-/*
- * Command LTTNG_LIST_TRACKER_PIDS processed by the client thread.
- *
- * Called with session lock held.
- */
-ssize_t cmd_list_tracker_pids(struct ltt_session *session,
- enum lttng_domain_type domain, int32_t **pids)
-{
- int ret;
- ssize_t nr_pids = 0;
-
- switch (domain) {
- case LTTNG_DOMAIN_KERNEL:
- {
- struct ltt_kernel_session *ksess;
-
- ksess = session->kernel_session;
- nr_pids = kernel_list_tracker_pids(ksess, pids);
- if (nr_pids < 0) {
- ret = LTTNG_ERR_KERN_LIST_FAIL;
- goto error;
- }
- break;
- }
- case LTTNG_DOMAIN_UST:
- {
- struct ltt_ust_session *usess;
-
- usess = session->ust_session;
- nr_pids = trace_ust_list_tracker_pids(usess, pids);
- if (nr_pids < 0) {
- ret = LTTNG_ERR_UST_LIST_FAIL;
- goto error;
- }
- break;
- }
- case LTTNG_DOMAIN_LOG4J:
- case LTTNG_DOMAIN_JUL:
- case LTTNG_DOMAIN_PYTHON:
- default:
- ret = LTTNG_ERR_UND;
- goto error;
- }
-
- return nr_pids;
-
-error:
- /* Return negative value to differentiate return code */
- return -ret;
-}
-
/*
* Command LTTNG_START_TRACE processed by the client thread.
*
unsigned long nb_chan = 0;
struct ltt_kernel_session *ksession;
struct ltt_ust_session *usess;
+ const bool session_rotated_after_last_stop =
+ session->rotated_after_last_stop;
+ const bool session_cleared_after_last_stop =
+ session->cleared_after_last_stop;
assert(session);
/* Is the session already started? */
if (session->active) {
ret = LTTNG_ERR_TRACE_ALREADY_STARTED;
+ /* Perform nothing */
+ goto end;
+ }
+
+ if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING &&
+ !session->current_trace_chunk) {
+ /*
+ * A rotation was launched while the session was stopped and
+ * it has not been completed yet. It is not possible to start
+ * the session since starting the session here would require a
+ * rotation from "NULL" to a new trace chunk. That rotation
+ * would overlap with the ongoing rotation, which is not
+ * supported.
+ */
+ WARN("Refusing to start session \"%s\" as a rotation launched after the last \"stop\" is still ongoing",
+ session->name);
+ ret = LTTNG_ERR_ROTATION_PENDING;
goto error;
}
goto error;
}
+ session->active = 1;
+ session->rotated_after_last_stop = false;
+ session->cleared_after_last_stop = false;
if (session->output_traces && !session->current_trace_chunk) {
- struct lttng_trace_chunk *trace_chunk;
+ if (!session->has_been_started) {
+ struct lttng_trace_chunk *trace_chunk;
- trace_chunk = session_create_new_trace_chunk(
- session, NULL, NULL);
- if (!trace_chunk) {
- ret = LTTNG_ERR_CREATE_DIR_FAIL;
- goto error;
- }
- assert(!session->current_trace_chunk);
- ret = session_set_trace_chunk(session, trace_chunk, NULL);
- lttng_trace_chunk_put(trace_chunk);
- if (ret) {
- ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
- goto error;
+ DBG("Creating initial trace chunk of session \"%s\"",
+ session->name);
+ trace_chunk = session_create_new_trace_chunk(
+ session, NULL, NULL, NULL);
+ if (!trace_chunk) {
+ ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
+ }
+ assert(!session->current_trace_chunk);
+ ret = session_set_trace_chunk(session, trace_chunk,
+ NULL);
+ lttng_trace_chunk_put(trace_chunk);
+ if (ret) {
+ ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
+ }
+ } else {
+ DBG("Rotating session \"%s\" from its current \"NULL\" trace chunk to a new chunk",
+ session->name);
+ /*
+ * Rotate existing streams into the new chunk.
+ * This is a "quiet" rotation has no client has
+ * explicitly requested this operation.
+ *
+ * There is also no need to wait for the rotation
+ * to complete as it will happen immediately. No data
+ * was produced as the session was stopped, so the
+ * rotation should happen on reception of the command.
+ */
+ ret = cmd_rotate_session(session, NULL, true,
+ LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
}
}
/* Kernel tracing */
if (ksession != NULL) {
DBG("Start kernel tracing session %s", session->name);
- ret = start_kernel_session(ksession, kernel_tracer_fd);
+ ret = start_kernel_session(ksession);
if (ret != LTTNG_OK) {
goto error;
}
}
}
- /* Flag this after a successful start. */
- session->has_been_started = 1;
- session->active = 1;
+ /*
+ * Open a packet in every stream of the session to ensure that viewers
+ * can correctly identify the boundaries of the periods during which
+ * tracing was active for this session.
+ */
+ ret = session_open_packets(session);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
/*
* Clear the flag that indicates that a rotation was done while the
ret = LTTNG_OK;
error:
+ if (ret == LTTNG_OK) {
+ /* Flag this after a successful start. */
+ session->has_been_started |= 1;
+ } else {
+ session->active = 0;
+ /* Restore initial state on error. */
+ session->rotated_after_last_stop =
+ session_rotated_after_last_stop;
+ session->cleared_after_last_stop =
+ session_cleared_after_last_stop;
+ }
+end:
return ret;
}
int cmd_stop_trace(struct ltt_session *session)
{
int ret;
- struct ltt_kernel_channel *kchan;
struct ltt_kernel_session *ksession;
struct ltt_ust_session *usess;
- bool error_occurred = false;
assert(session);
- DBG("Begin stop session %s (id %" PRIu64 ")", session->name, session->id);
+ DBG("Begin stop session \"%s\" (id %" PRIu64 ")", session->name, session->id);
/* Short cut */
ksession = session->kernel_session;
usess = session->ust_session;
goto error;
}
- /* Kernel tracer */
- if (ksession && ksession->active) {
- DBG("Stop kernel tracing");
-
- ret = kernel_stop_session(ksession);
- if (ret < 0) {
- ret = LTTNG_ERR_KERN_STOP_FAIL;
- goto error;
- }
-
- kernel_wait_quiescent(kernel_tracer_fd);
-
- /* Flush metadata after stopping (if exists) */
- if (ksession->metadata_stream_fd >= 0) {
- ret = kernel_metadata_flush_buffer(ksession->metadata_stream_fd);
- if (ret < 0) {
- ERR("Kernel metadata flush failed");
- }
- }
-
- /* Flush all buffers after stopping */
- cds_list_for_each_entry(kchan, &ksession->channel_list.head, list) {
- ret = kernel_flush_buffer(kchan);
- if (ret < 0) {
- ERR("Kernel flush buffer error");
- }
- }
-
- ksession->active = 0;
- DBG("Kernel session stopped %s (id %" PRIu64 ")", session->name,
- session->id);
+ ret = stop_kernel_session(ksession);
+ if (ret != LTTNG_OK) {
+ goto error;
}
if (usess && usess->active) {
}
}
+ DBG("Completed stop session \"%s\" (id %" PRIu64 ")", session->name,
+ session->id);
/* Flag inactive after a successful stop. */
session->active = 0;
- ret = !error_occurred ? LTTNG_OK : LTTNG_ERR_UNK;
+ ret = LTTNG_OK;
error:
return ret;
}
+/*
+ * Set the base_path of the session only if subdir of a control uris is set.
+ * Return LTTNG_OK on success, otherwise LTTNG_ERR_*.
+ */
+static int set_session_base_path_from_uris(struct ltt_session *session,
+ size_t nb_uri,
+ struct lttng_uri *uris)
+{
+ int ret;
+ size_t i;
+
+ for (i = 0; i < nb_uri; i++) {
+ if (uris[i].stype != LTTNG_STREAM_CONTROL ||
+ uris[i].subdir[0] == '\0') {
+ /* Not interested in these URIs */
+ continue;
+ }
+
+ if (session->base_path != NULL) {
+ free(session->base_path);
+ session->base_path = NULL;
+ }
+
+ /* Set session base_path */
+ session->base_path = strdup(uris[i].subdir);
+ if (!session->base_path) {
+ PERROR("Failed to copy base path \"%s\" to session \"%s\"",
+ uris[i].subdir, session->name);
+ ret = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ DBG2("Setting base path \"%s\" for session \"%s\"",
+ session->base_path, session->name);
+ }
+ ret = LTTNG_OK;
+error:
+ return ret;
+}
+
/*
* Command LTTNG_SET_CONSUMER_URI processed by the client thread.
*/
goto error;
}
+ /*
+ * Set the session base path if any. This is done inside
+ * cmd_set_consumer_uri to preserve backward compatibility of the
+ * previous session creation api vs the session descriptor api.
+ */
+ ret = set_session_base_path_from_uris(session, nb_uri, uris);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+
/* Set the "global" consumer URIs */
for (i = 0; i < nb_uri; i++) {
- ret = add_uri_to_consumer(session,
- session->consumer,
- &uris[i], LTTNG_DOMAIN_NONE);
+ ret = add_uri_to_consumer(session, session->consumer, &uris[i],
+ LTTNG_DOMAIN_NONE);
if (ret != LTTNG_OK) {
goto error;
}
ret_code = LTTNG_ERR_INVALID;
goto end;
}
+
ret_code = session_create(session_name, creds->uid, creds->gid,
&new_session);
if (ret_code != LTTNG_OK) {
struct lttng_trace_archive_location *location = NULL;
struct lttcomm_lttng_msg llm = {
.cmd_type = LTTNG_DESTROY_SESSION,
- .ret_code = LTTNG_OK,
+ .ret_code = reply_context->destruction_status,
.pid = UINT32_MAX,
.cmd_header_size =
sizeof(struct lttcomm_session_destroy_command_header),
payload_size_before_location = payload.size;
comm_ret = lttng_trace_archive_location_serialize(location,
&payload);
+ lttng_trace_archive_location_put(location);
if (comm_ret < 0) {
ERR("Failed to serialize the location of the trace archive produced during the destruction of session \"%s\"",
session->name);
int *sock_fd)
{
int ret;
+ enum lttng_error_code destruction_last_error = LTTNG_OK;
struct cmd_destroy_session_reply_context *reply_context = NULL;
if (sock_fd) {
/* Carry on with the destruction of the session. */
ERR("Failed to stop session \"%s\" as part of its destruction: %s",
session->name, lttng_strerror(-ret));
+ destruction_last_error = ret;
}
}
session)) {
ERR("Failed to stop the \"rotation schedule\" timer of session %s",
session->name);
+ destruction_last_error = LTTNG_ERR_TIMER_STOP_ERROR;
}
}
session->rotate_size = 0;
}
- if (session->most_recent_chunk_id.is_set &&
- session->most_recent_chunk_id.value != 0 &&
- session->current_trace_chunk) {
- ret = cmd_rotate_session(session, NULL);
+ if (session->rotated && session->current_trace_chunk && session->output_traces) {
+ /*
+ * Perform a last rotation on destruction if rotations have
+ * occurred during the session's lifetime.
+ */
+ ret = cmd_rotate_session(session, NULL, false,
+ LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED);
if (ret != LTTNG_OK) {
ERR("Failed to perform an implicit rotation as part of the destruction of session \"%s\": %s",
session->name, lttng_strerror(-ret));
+ destruction_last_error = -ret;
}
if (reply_context) {
reply_context->implicit_rotation_on_destroy = true;
}
- }
+ } else if (session->has_been_started && session->current_trace_chunk) {
+ /*
+ * The user has not triggered a session rotation. However, to
+ * ensure all data has been consumed, the session is rotated
+ * to a 'null' trace chunk before it is destroyed.
+ *
+ * This is a "quiet" rotation meaning that no notification is
+ * emitted and no renaming of the current trace chunk takes
+ * place.
+ */
+ ret = cmd_rotate_session(session, NULL, true,
+ LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION);
+ /*
+ * Rotation operations may not be supported by the kernel
+ * tracer. Hence, do not consider this implicit rotation as
+ * a session destruction error. The library has already stopped
+ * the session and waited for pending data; there is nothing
+ * left to do but complete the destruction of the session.
+ */
+ if (ret != LTTNG_OK &&
+ ret != -LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL) {
+ ERR("Failed to perform a quiet rotation as part of the destruction of session \"%s\": %s",
+ session->name, lttng_strerror(ret));
+ destruction_last_error = -ret;
+ }
+ }
if (session->shm_path[0]) {
/*
*/
session_destroy(session);
if (reply_context) {
+ reply_context->destruction_status = destruction_last_error;
ret = session_add_destroy_notifier(session,
cmd_destroy_session_reply,
(void *) reply_context);
/* Kernel session buffer type is always GLOBAL */
(*domains)[index].buf_type = LTTNG_BUFFER_GLOBAL;
- index++;
+ index++;
+ }
+
+ if (session->ust_session != NULL) {
+ (*domains)[index].type = LTTNG_DOMAIN_UST;
+ (*domains)[index].buf_type = session->ust_session->buffer_type;
+ index++;
+
+ rcu_read_lock();
+ cds_lfht_for_each_entry(session->ust_session->agents->ht, &iter.iter,
+ agt, node.node) {
+ if (agt->being_used) {
+ (*domains)[index].type = agt->domain;
+ (*domains)[index].buf_type = session->ust_session->buffer_type;
+ index++;
+ }
+ }
+ rcu_read_unlock();
+ }
+end:
+ return nb_dom;
+
+error:
+ /* Return negative value to differentiate return code */
+ return -ret;
+}
+
+
+/*
+ * Command LTTNG_LIST_CHANNELS processed by the client thread.
+ */
+enum lttng_error_code cmd_list_channels(enum lttng_domain_type domain,
+ struct ltt_session *session,
+ struct lttng_dynamic_buffer *buffer,
+ uint32_t *nb_channel)
+{
+ int ret = 0;
+ uint32_t i = 0;
+
+ assert(session);
+ assert(buffer);
+ assert(nb_channel);
+
+ DBG("Listing channels for session %s", session->name);
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ {
+ /* Kernel channels */
+ struct ltt_kernel_channel *kchan;
+ if (session->kernel_session != NULL) {
+ cds_list_for_each_entry(kchan,
+ &session->kernel_session->channel_list.head, list) {
+ uint64_t discarded_events, lost_packets;
+ struct lttng_channel_extended *extended;
+
+ extended = (struct lttng_channel_extended *)
+ kchan->channel->attr.extended.ptr;
+
+ ret = get_kernel_runtime_stats(session, kchan,
+ &discarded_events, &lost_packets);
+ if (ret < 0) {
+ goto end;
+ }
+
+ /*
+ * Update the discarded_events and lost_packets
+ * count for the channel
+ */
+ extended->discarded_events = discarded_events;
+ extended->lost_packets = lost_packets;
+
+ ret = lttng_channel_serialize(
+ kchan->channel, buffer);
+ if (ret) {
+ ret = -1;
+ goto end;
+ }
+
+ i++;
+ }
+ }
+ break;
}
-
- if (session->ust_session != NULL) {
- (*domains)[index].type = LTTNG_DOMAIN_UST;
- (*domains)[index].buf_type = session->ust_session->buffer_type;
- index++;
+ case LTTNG_DOMAIN_UST:
+ {
+ struct lttng_ht_iter iter;
+ struct ltt_ust_channel *uchan;
rcu_read_lock();
- cds_lfht_for_each_entry(session->ust_session->agents->ht, &iter.iter,
- agt, node.node) {
- if (agt->being_used) {
- (*domains)[index].type = agt->domain;
- (*domains)[index].buf_type = session->ust_session->buffer_type;
- index++;
+ 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;
+ struct lttng_channel *channel = NULL;
+ struct lttng_channel_extended *extended;
+
+ channel = trace_ust_channel_to_lttng_channel(uchan);
+ if (!channel) {
+ ret = -1;
+ break;
}
- }
- rcu_read_unlock();
- }
-end:
- return nb_dom;
-error:
- /* Return negative value to differentiate return code */
- return -ret;
-}
+ extended = (struct lttng_channel_extended *)
+ channel->attr.extended.ptr;
+ ret = get_ust_runtime_stats(session, uchan,
+ &discarded_events, &lost_packets);
+ if (ret < 0) {
+ lttng_channel_destroy(channel);
+ break;
+ }
-/*
- * Command LTTNG_LIST_CHANNELS processed by the client thread.
- */
-ssize_t cmd_list_channels(enum lttng_domain_type domain,
- struct ltt_session *session, struct lttng_channel **channels)
-{
- ssize_t nb_chan = 0, payload_size = 0, ret;
+ extended->discarded_events = discarded_events;
+ extended->lost_packets = lost_packets;
- switch (domain) {
- case LTTNG_DOMAIN_KERNEL:
- if (session->kernel_session != NULL) {
- nb_chan = session->kernel_session->channel_count;
- }
- DBG3("Number of kernel channels %zd", nb_chan);
- if (nb_chan <= 0) {
- ret = -LTTNG_ERR_KERN_CHAN_NOT_FOUND;
- goto end;
- }
- break;
- case LTTNG_DOMAIN_UST:
- if (session->ust_session != NULL) {
- rcu_read_lock();
- nb_chan = lttng_ht_get_count(
- session->ust_session->domain_global.channels);
- rcu_read_unlock();
- }
- DBG3("Number of UST global channels %zd", nb_chan);
- if (nb_chan < 0) {
- ret = -LTTNG_ERR_UST_CHAN_NOT_FOUND;
- goto end;
+ ret = lttng_channel_serialize(channel, buffer);
+ if (ret) {
+ ret = -1;
+ break;
+ }
+
+ i++;
}
+ rcu_read_unlock();
break;
+ }
default:
- ret = -LTTNG_ERR_UND;
- goto end;
+ break;
}
- if (nb_chan > 0) {
- const size_t channel_size = sizeof(struct lttng_channel) +
- sizeof(struct lttng_channel_extended);
- struct lttng_channel_extended *channel_exts;
-
- payload_size = nb_chan * channel_size;
- *channels = zmalloc(payload_size);
- if (*channels == NULL) {
- ret = -LTTNG_ERR_FATAL;
- goto end;
- }
-
- channel_exts = ((void *) *channels) +
- (nb_chan * sizeof(struct lttng_channel));
- ret = list_lttng_channels(domain, session, *channels, channel_exts);
- if (ret != LTTNG_OK) {
- free(*channels);
- *channels = NULL;
- goto end;
- }
+end:
+ if (ret < 0) {
+ *nb_channel = 0;
+ return LTTNG_ERR_FATAL;
} else {
- *channels = NULL;
+ *nb_channel = i;
+ return LTTNG_OK;
}
-
- ret = payload_size;
-end:
- return ret;
}
/*
* Return LTTNG_OK on success or else a LTTNG_ERR code.
*/
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 ret;
struct snapshot_output *new_output;
* Return LTTNG_OK on success or else a LTTNG_ERR code.
*/
int cmd_snapshot_del_output(struct ltt_session *session,
- struct lttng_snapshot_output *output)
+ const struct lttng_snapshot_output *output)
{
int ret;
struct snapshot_output *sout = NULL;
* Return LTTNG_OK on success or a LTTNG_ERR code.
*/
static enum lttng_error_code set_relayd_for_snapshot(
- struct consumer_output *consumer,
- const struct snapshot_output *snap_output,
+ struct consumer_output *output,
const struct ltt_session *session)
{
enum lttng_error_code status = LTTNG_OK;
struct lttng_ht_iter iter;
struct consumer_socket *socket;
LTTNG_OPTIONAL(uint64_t) current_chunk_id = {};
+ const char *base_path;
- assert(consumer);
- assert(snap_output);
+ assert(output);
assert(session);
DBG2("Set relayd object from snapshot output");
if (session->current_trace_chunk) {
- enum lttng_trace_chunk_status status = lttng_trace_chunk_get_id(
- session->current_trace_chunk, ¤t_chunk_id.value);
+ enum lttng_trace_chunk_status chunk_status =
+ lttng_trace_chunk_get_id(
+ session->current_trace_chunk,
+ ¤t_chunk_id.value);
- if (status == LTTNG_TRACE_CHUNK_STATUS_OK) {
+ if (chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK) {
current_chunk_id.is_set = true;
} else {
ERR("Failed to get current trace chunk id");
}
/* Ignore if snapshot consumer output is not network. */
- if (snap_output->consumer->type != CONSUMER_DST_NET) {
+ if (output->type != CONSUMER_DST_NET) {
goto error;
}
+ /*
+ * The snapshot record URI base path overrides the session
+ * base path.
+ */
+ if (output->dst.net.control.subdir[0] != '\0') {
+ base_path = output->dst.net.control.subdir;
+ } else {
+ base_path = session->base_path;
+ }
+
/*
* For each consumer socket, create and send the relayd object of the
* snapshot output.
*/
rcu_read_lock();
- cds_lfht_for_each_entry(snap_output->consumer->socks->ht, &iter.iter,
+ cds_lfht_for_each_entry(output->socks->ht, &iter.iter,
socket, node.node) {
pthread_mutex_lock(socket->lock);
status = send_consumer_relayd_sockets(0, session->id,
- snap_output->consumer, socket,
+ output, socket,
session->name, session->hostname,
+ base_path,
session->live_timer,
- current_chunk_id.is_set ? ¤t_chunk_id.value : NULL);
+ current_chunk_id.is_set ? ¤t_chunk_id.value : NULL,
+ session->creation_time,
+ session->name_contains_creation_time);
pthread_mutex_unlock(socket->lock);
if (status != LTTNG_OK) {
rcu_read_unlock();
*/
static enum lttng_error_code record_kernel_snapshot(
struct ltt_kernel_session *ksess,
- const struct snapshot_output *output,
+ const struct consumer_output *output,
const struct ltt_session *session,
int wait, uint64_t nb_packets_per_stream)
{
- int ret;
enum lttng_error_code status;
assert(ksess);
assert(output);
assert(session);
- /*
- * Copy kernel session sockets so we can communicate with the right
- * consumer for the snapshot record command.
- */
- ret = consumer_copy_sockets(output->consumer, ksess->consumer);
- if (ret < 0) {
- status = LTTNG_ERR_NOMEM;
- goto error;
- }
-
- status = set_relayd_for_snapshot(ksess->consumer, output, session);
- if (status != LTTNG_OK) {
- goto error_snapshot;
- }
-
- status = kernel_snapshot_record(ksess, output, wait, nb_packets_per_stream);
- if (status != LTTNG_OK) {
- goto error_snapshot;
- }
-
- goto end;
-
-error_snapshot:
- /* Clean up copied sockets so this output can use some other later on. */
- consumer_destroy_output_sockets(output->consumer);
-error:
-end:
+ status = kernel_snapshot_record(
+ ksess, output, wait, nb_packets_per_stream);
return status;
}
* Returns LTTNG_OK on success or a LTTNG_ERR error code.
*/
static enum lttng_error_code record_ust_snapshot(struct ltt_ust_session *usess,
- const struct snapshot_output *output,
- const struct ltt_session *session, int wait,
- uint64_t nb_packets_per_stream)
+ const struct consumer_output *output,
+ const struct ltt_session *session,
+ int wait, uint64_t nb_packets_per_stream)
{
- int ret;
enum lttng_error_code status;
assert(usess);
assert(output);
assert(session);
- /*
- * 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) {
- status = LTTNG_ERR_NOMEM;
- goto error;
- }
-
- status = set_relayd_for_snapshot(usess->consumer, output, session);
- if (status != LTTNG_OK) {
- goto error_snapshot;
- }
-
- status = ust_app_snapshot_record(usess, output, wait,
- nb_packets_per_stream);
- if (status != LTTNG_OK) {
- goto error_snapshot;
- }
-
- goto end;
-
-error_snapshot:
- /* Clean up copied sockets so this output can use some other later on. */
- consumer_destroy_output_sockets(output->consumer);
-error:
-end:
+ status = ust_app_snapshot_record(
+ usess, output, wait, nb_packets_per_stream);
return status;
}
}
cur_nb_packets++;
}
- if (!cur_nb_packets) {
+ if (!cur_nb_packets && size_left != max_size) {
/* Not enough room to grab one packet of each stream, error. */
return -1;
}
enum lttng_error_code snapshot_record(struct ltt_session *session,
const struct snapshot_output *snapshot_output, int wait)
{
- int fmt_ret;
int64_t nb_packets_per_stream;
char snapshot_chunk_name[LTTNG_NAME_MAX];
- enum lttng_error_code ret = LTTNG_OK;
+ int ret;
+ enum lttng_error_code ret_code = LTTNG_OK;
struct lttng_trace_chunk *snapshot_trace_chunk;
+ struct consumer_output *original_ust_consumer_output = NULL;
+ struct consumer_output *original_kernel_consumer_output = NULL;
+ struct consumer_output *snapshot_ust_consumer_output = NULL;
+ struct consumer_output *snapshot_kernel_consumer_output = NULL;
- fmt_ret = snprintf(snapshot_chunk_name, sizeof(snapshot_chunk_name),
+ ret = snprintf(snapshot_chunk_name, sizeof(snapshot_chunk_name),
"%s-%s-%" PRIu64,
snapshot_output->name,
snapshot_output->datetime,
snapshot_output->nb_snapshot);
- if (fmt_ret < 0 || fmt_ret >= sizeof(snapshot_chunk_name)) {
+ if (ret < 0 || ret >= sizeof(snapshot_chunk_name)) {
ERR("Failed to format snapshot name");
- ret = LTTNG_ERR_INVALID;
- goto end;
+ ret_code = LTTNG_ERR_INVALID;
+ goto error;
}
DBG("Recording snapshot \"%s\" for session \"%s\" with chunk name \"%s\"",
snapshot_output->name, session->name,
snapshot_chunk_name);
+ if (!session->kernel_session && !session->ust_session) {
+ ERR("Failed to record snapshot as no channels exist");
+ ret_code = LTTNG_ERR_NO_CHANNEL;
+ goto error;
+ }
+
+ if (session->kernel_session) {
+ original_kernel_consumer_output =
+ session->kernel_session->consumer;
+ snapshot_kernel_consumer_output =
+ consumer_copy_output(snapshot_output->consumer);
+ strcpy(snapshot_kernel_consumer_output->chunk_path,
+ snapshot_chunk_name);
+
+ /* Copy the original domain subdir. */
+ strcpy(snapshot_kernel_consumer_output->domain_subdir,
+ original_kernel_consumer_output->domain_subdir);
+
+ ret = consumer_copy_sockets(snapshot_kernel_consumer_output,
+ original_kernel_consumer_output);
+ if (ret < 0) {
+ ERR("Failed to copy consumer sockets from snapshot output configuration");
+ ret_code = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ ret_code = set_relayd_for_snapshot(
+ snapshot_kernel_consumer_output, session);
+ if (ret_code != LTTNG_OK) {
+ ERR("Failed to setup relay daemon for kernel tracer snapshot");
+ goto error;
+ }
+ session->kernel_session->consumer =
+ snapshot_kernel_consumer_output;
+ }
+ if (session->ust_session) {
+ original_ust_consumer_output = session->ust_session->consumer;
+ snapshot_ust_consumer_output =
+ consumer_copy_output(snapshot_output->consumer);
+ strcpy(snapshot_ust_consumer_output->chunk_path,
+ snapshot_chunk_name);
+
+ /* Copy the original domain subdir. */
+ strcpy(snapshot_ust_consumer_output->domain_subdir,
+ original_ust_consumer_output->domain_subdir);
+
+ ret = consumer_copy_sockets(snapshot_ust_consumer_output,
+ original_ust_consumer_output);
+ if (ret < 0) {
+ ERR("Failed to copy consumer sockets from snapshot output configuration");
+ ret_code = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ ret_code = set_relayd_for_snapshot(
+ snapshot_ust_consumer_output, session);
+ if (ret_code != LTTNG_OK) {
+ ERR("Failed to setup relay daemon for userspace tracer snapshot");
+ goto error;
+ }
+ session->ust_session->consumer =
+ snapshot_ust_consumer_output;
+ }
+
snapshot_trace_chunk = session_create_new_trace_chunk(session,
- snapshot_output_get_base_path(snapshot_output),
+ snapshot_kernel_consumer_output ?:
+ snapshot_ust_consumer_output,
+ consumer_output_get_base_path(
+ snapshot_output->consumer),
snapshot_chunk_name);
if (!snapshot_trace_chunk) {
- ret = LTTNG_ERR_CREATE_DIR_FAIL;
- goto end;
+ ERR("Failed to create temporary trace chunk to record a snapshot of session \"%s\"",
+ session->name);
+ ret_code = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
}
assert(!session->current_trace_chunk);
ret = session_set_trace_chunk(session, snapshot_trace_chunk, NULL);
lttng_trace_chunk_put(snapshot_trace_chunk);
snapshot_trace_chunk = NULL;
if (ret) {
- ret = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
- goto end;
+ ERR("Failed to set temporary trace chunk to record a snapshot of session \"%s\"",
+ session->name);
+ ret_code = LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER;
+ goto error;
}
nb_packets_per_stream = get_session_nb_packets_per_stream(session,
snapshot_output->max_size);
if (nb_packets_per_stream < 0) {
- ret = LTTNG_ERR_MAX_SIZE_INVALID;
- goto end;
+ ret_code = LTTNG_ERR_MAX_SIZE_INVALID;
+ goto error_close_trace_chunk;
}
if (session->kernel_session) {
- ret = record_kernel_snapshot(session->kernel_session,
- snapshot_output, session,
+ ret_code = record_kernel_snapshot(session->kernel_session,
+ snapshot_kernel_consumer_output, session,
wait, nb_packets_per_stream);
- if (ret != LTTNG_OK) {
- goto end;
+ if (ret_code != LTTNG_OK) {
+ goto error_close_trace_chunk;
}
}
if (session->ust_session) {
- ret = record_ust_snapshot(session->ust_session,
- snapshot_output, session,
+ ret_code = record_ust_snapshot(session->ust_session,
+ snapshot_ust_consumer_output, session,
wait, nb_packets_per_stream);
- if (ret != LTTNG_OK) {
- goto end;
+ if (ret_code != LTTNG_OK) {
+ goto error_close_trace_chunk;
}
}
- if (session_close_trace_chunk(
- session, session->current_trace_chunk, NULL)) {
+error_close_trace_chunk:
+ if (session_set_trace_chunk(session, NULL, &snapshot_trace_chunk)) {
+ ERR("Failed to release the current trace chunk of session \"%s\"",
+ session->name);
+ ret_code = LTTNG_ERR_UNK;
+ }
+
+ if (session_close_trace_chunk(session, snapshot_trace_chunk,
+ LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION, NULL)) {
/*
* Don't goto end; make sure the chunk is closed for the session
* to allow future snapshots.
*/
ERR("Failed to close snapshot trace chunk of session \"%s\"",
session->name);
- ret = -1;
+ ret_code = LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
}
- if (session_set_trace_chunk(session, NULL, NULL)) {
- ERR("Failed to release the current trace chunk of session \"%s\"",
- session->name);
- ret = -1;
+
+ lttng_trace_chunk_put(snapshot_trace_chunk);
+ snapshot_trace_chunk = NULL;
+error:
+ if (original_ust_consumer_output) {
+ session->ust_session->consumer = original_ust_consumer_output;
}
-end:
- return ret;
+ if (original_kernel_consumer_output) {
+ session->kernel_session->consumer =
+ original_kernel_consumer_output;
+ }
+ consumer_output_put(snapshot_ust_consumer_output);
+ consumer_output_put(snapshot_kernel_consumer_output);
+ return ret_code;
}
/*
* Return LTTNG_OK on success or else a LTTNG_ERR code.
*/
int cmd_snapshot_record(struct ltt_session *session,
- struct lttng_snapshot_output *output, int wait)
+ const struct lttng_snapshot_output *output, int wait)
{
enum lttng_error_code cmd_ret = LTTNG_OK;
int ret;
- unsigned int use_tmp_output = 0;
- struct snapshot_output tmp_output;
unsigned int snapshot_success = 0;
char datetime[16];
+ struct snapshot_output *tmp_output = NULL;
assert(session);
assert(output);
/* Use temporary output for the session. */
if (*output->ctrl_url != '\0') {
+ tmp_output = snapshot_output_alloc();
+ if (!tmp_output) {
+ cmd_ret = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
ret = snapshot_output_init(session, output->max_size,
output->name,
output->ctrl_url, output->data_url,
session->consumer,
- &tmp_output, NULL);
+ tmp_output, NULL);
if (ret < 0) {
if (ret == -ENOMEM) {
cmd_ret = LTTNG_ERR_NOMEM;
goto error;
}
/* Use the global session count for the temporary snapshot. */
- tmp_output.nb_snapshot = session->snapshot.nb_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 (use_tmp_output) {
- cmd_ret = snapshot_record(session, &tmp_output, wait);
+ memcpy(tmp_output->datetime, datetime, sizeof(datetime));
+ cmd_ret = snapshot_record(session, tmp_output, wait);
if (cmd_ret != LTTNG_OK) {
goto error;
}
rcu_read_lock();
cds_lfht_for_each_entry(session->snapshot.output_ht->ht,
&iter.iter, sout, node.node) {
+ struct snapshot_output output_copy;
+
/*
- * Make a local copy of the output and assign the
- * possible temporary value given by the caller.
+ * Make a local copy of the output and override output
+ * parameters with those provided as part of the
+ * command.
*/
- memcpy(&tmp_output, sout, sizeof(tmp_output));
+ memcpy(&output_copy, sout, sizeof(output_copy));
if (output->max_size != (uint64_t) -1ULL) {
- tmp_output.max_size = output->max_size;
+ output_copy.max_size = output->max_size;
}
- tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
- memcpy(tmp_output.datetime, datetime, sizeof(datetime));
+ output_copy.nb_snapshot = session->snapshot.nb_snapshot;
+ memcpy(output_copy.datetime, datetime,
+ sizeof(datetime));
/* Use temporary name. */
if (*output->name != '\0') {
- if (lttng_strncpy(tmp_output.name, output->name,
- sizeof(tmp_output.name))) {
+ if (lttng_strncpy(output_copy.name,
+ output->name,
+ sizeof(output_copy.name))) {
cmd_ret = LTTNG_ERR_INVALID;
rcu_read_unlock();
goto error;
}
}
- cmd_ret = snapshot_record(session, &tmp_output, wait);
+ cmd_ret = snapshot_record(session, &output_copy, wait);
if (cmd_ret != LTTNG_OK) {
rcu_read_unlock();
goto error;
}
error:
+ if (tmp_output) {
+ snapshot_output_destroy(tmp_output);
+ }
return cmd_ret;
}
* Returns LTTNG_OK on success or else a negative LTTng error code.
*/
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 ret;
uint64_t ongoing_rotation_chunk_id;
struct lttng_trace_chunk *chunk_being_archived = NULL;
struct lttng_trace_chunk *new_trace_chunk = NULL;
enum lttng_trace_chunk_status chunk_status;
+ bool failed_to_rotate = false;
+ enum lttng_error_code rotation_fail_code = LTTNG_OK;
assert(session);
goto end;
}
- if (session->live_timer || !session->output_traces) {
+ /*
+ * Explicit rotation is not supported for live sessions.
+ * However, live sessions can perform a quiet rotation on
+ * destroy.
+ * Rotation is not supported for snapshot traces (no output).
+ */
+ if ((!quiet_rotation && session->live_timer) ||
+ !session->output_traces) {
cmd_ret = LTTNG_ERR_ROTATION_NOT_AVAILABLE;
goto end;
}
/* Unsupported feature in lttng-relayd before 2.11. */
- if (session->consumer->type == CONSUMER_DST_NET &&
+ if (!quiet_rotation && session->consumer->type == CONSUMER_DST_NET &&
(session->consumer->relay_major_version == 2 &&
session->consumer->relay_minor_version < 11)) {
cmd_ret = LTTNG_ERR_ROTATION_NOT_AVAILABLE_RELAY;
goto end;
}
+ /* Unsupported feature in lttng-modules before 2.8 (lack of sequence number). */
+ if (session->kernel_session && !kernel_supports_ring_buffer_packet_sequence_number()) {
+ cmd_ret = LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL;
+ goto end;
+ }
+
if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
DBG("Refusing to launch a rotation; a rotation is already in progress for session %s",
session->name);
goto end;
}
- session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
+ /*
+ * After a stop followed by a clear, disallow following rotations a they would
+ * generate empty chunks.
+ */
+ if (session->cleared_after_last_stop) {
+ DBG("Session \"%s\" was already cleared after stop, refusing rotation",
+ session->name);
+ cmd_ret = LTTNG_ERR_ROTATION_AFTER_STOP_CLEAR;
+ goto end;
+ }
if (session->active) {
- new_trace_chunk = session_create_new_trace_chunk(session,
+ new_trace_chunk = session_create_new_trace_chunk(session, NULL,
NULL, NULL);
if (!new_trace_chunk) {
cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
}
}
- /* The current trace chunk becomes the chunk being archived. */
+ /*
+ * The current trace chunk becomes the chunk being archived.
+ *
+ * After this point, "chunk_being_archived" must absolutely
+ * be closed on the consumer(s), otherwise it will never be
+ * cleaned-up, which will result in a leak.
+ */
ret = session_set_trace_chunk(session, new_trace_chunk,
&chunk_being_archived);
if (ret) {
goto error;
}
- assert(chunk_being_archived);
- chunk_status = lttng_trace_chunk_get_id(chunk_being_archived,
- &ongoing_rotation_chunk_id);
- assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
-
if (session->kernel_session) {
cmd_ret = kernel_rotate_session(session);
if (cmd_ret != LTTNG_OK) {
- goto error;
+ failed_to_rotate = true;
+ rotation_fail_code = cmd_ret;
}
}
if (session->ust_session) {
cmd_ret = ust_app_rotate_session(session);
if (cmd_ret != LTTNG_OK) {
+ failed_to_rotate = true;
+ rotation_fail_code = cmd_ret;
+ }
+ }
+
+ if (!session->active) {
+ session->rotated_after_last_stop = true;
+ }
+
+ if (!chunk_being_archived) {
+ DBG("Rotating session \"%s\" from a \"NULL\" trace chunk to a new trace chunk, skipping completion check",
+ session->name);
+ if (failed_to_rotate) {
+ cmd_ret = rotation_fail_code;
goto error;
}
+ cmd_ret = LTTNG_OK;
+ goto end;
}
+ session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
+ chunk_status = lttng_trace_chunk_get_id(chunk_being_archived,
+ &ongoing_rotation_chunk_id);
+ assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK);
+
ret = session_close_trace_chunk(session, chunk_being_archived,
- &((enum lttng_trace_chunk_command_type) {
- LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED}));
+ command, session->last_chunk_path);
if (ret) {
cmd_ret = LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER;
goto error;
}
+ if (failed_to_rotate) {
+ cmd_ret = rotation_fail_code;
+ goto error;
+ }
+
+ session->quiet_rotation = quiet_rotation;
ret = timer_session_rotation_pending_check_start(session,
DEFAULT_ROTATE_PENDING_TIMER);
if (ret) {
goto error;
}
- if (!session->active) {
- session->rotated_after_last_stop = true;
- }
-
if (rotate_return) {
rotate_return->rotation_id = ongoing_rotation_chunk_id;
}
session->chunk_being_archived = chunk_being_archived;
chunk_being_archived = NULL;
- ret = notification_thread_command_session_rotation_ongoing(
- notification_thread_handle,
- session->name, session->uid, session->gid,
- ongoing_rotation_chunk_id);
- if (ret != LTTNG_OK) {
- ERR("Failed to notify notification thread that a session rotation is ongoing for session %s",
- session->name);
- cmd_ret = ret;
+ if (!quiet_rotation) {
+ ret = notification_thread_command_session_rotation_ongoing(
+ notification_thread_handle,
+ session->name, session->uid, session->gid,
+ ongoing_rotation_chunk_id);
+ if (ret != LTTNG_OK) {
+ ERR("Failed to notify notification thread that a session rotation is ongoing for session %s",
+ session->name);
+ cmd_ret = ret;
+ }
}
DBG("Cmd rotate session %s, archive_id %" PRIu64 " sent",
switch (rotation_state) {
case LTTNG_ROTATION_STATE_NO_ROTATION:
- DBG("Reporting that no rotation has occured within the lifetime of session \"%s\"",
+ DBG("Reporting that no rotation has occurred within the lifetime of session \"%s\"",
session->name);
goto end;
case LTTNG_ROTATION_STATE_EXPIRED:
sizeof(info_return->location.local.absolute_path);
info_return->location_type =
(int8_t) LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL;
+ fmt_ret = asprintf(&chunk_path,
+ "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY "/%s",
+ session_get_base_path(session),
+ session->last_archived_chunk_name);
+ if (fmt_ret == -1) {
+ PERROR("Failed to format the path of the last archived trace chunk");
+ info_return->status = LTTNG_ROTATION_STATUS_ERROR;
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
break;
case CONSUMER_DST_NET:
+ {
+ uint16_t ctrl_port, data_port;
+
current_tracing_path_reply =
info_return->location.relay.relative_path;
current_tracing_path_reply_len =
goto end;
}
- session_get_net_consumer_ports(session,
- &info_return->location.relay.ports.control,
- &info_return->location.relay.ports.data);
+ session_get_net_consumer_ports(session, &ctrl_port, &data_port);
+ info_return->location.relay.ports.control = ctrl_port;
+ info_return->location.relay.ports.data = data_port;
info_return->location_type =
(int8_t) LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY;
+ chunk_path = strdup(session->last_chunk_path);
+ if (!chunk_path) {
+ ERR("Failed to allocate the path of the last archived trace chunk");
+ info_return->status = LTTNG_ROTATION_STATUS_ERROR;
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
break;
+ }
default:
abort();
}
- fmt_ret = asprintf(&chunk_path,
- "%s/" DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY "/%s",
- session_get_base_path(session),
- session->last_archived_chunk_name);
- if (fmt_ret == -1) {
- PERROR("Failed to format the path of the last archived trace chunk");
- info_return->status = LTTNG_ROTATION_STATUS_ERROR;
- cmd_ret = LTTNG_ERR_UNK;
- goto end;
- }
fmt_ret = lttng_strncpy(current_tracing_path_reply,
chunk_path, current_tracing_path_reply_len);