#include <urcu/compiler.h>
#include <common/common.h>
+#include <common/sessiond-comm/sessiond-comm.h>
+#include "fd-limit.h"
+#include "health.h"
#include "ust-app.h"
#include "ust-consumer.h"
#include "ust-ctl.h"
-#include "fd-limit.h"
/*
* Delete ust context safely. RCU read lock must be held before calling
assert(!ret);
delete_ust_app_ctx(sock, ua_ctx);
}
+ free(ua_event->filter);
lttng_ht_destroy(ua_event->ctx);
if (ua_event->obj != NULL) {
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_add_context(app->sock, &ua_ctx->ctx,
ua_chan->obj, &ua_ctx->obj);
if (ret < 0) {
DBG2("UST app context created successfully for channel %s", ua_chan->name);
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_add_context(app->sock, &ua_ctx->ctx,
ua_event->obj, &ua_ctx->obj);
if (ret < 0) {
DBG2("UST app context created successfully for event %s", ua_event->name);
error:
+ health_code_update(&health_thread_cmd);
+ return ret;
+}
+
+/*
+ * Set the filter on the tracer.
+ */
+static
+int set_ust_event_filter(struct ust_app_event *ua_event,
+ struct ust_app *app)
+{
+ int ret;
+
+ health_code_update(&health_thread_cmd);
+
+ if (!ua_event->filter) {
+ ret = 0;
+ goto error;
+ }
+
+ ret = ustctl_set_filter(app->sock, ua_event->filter,
+ ua_event->obj);
+ if (ret < 0) {
+ goto error;
+ }
+
+ DBG2("UST filter set successfully for event %s", ua_event->name);
+
+error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_disable(app->sock, ua_event->obj);
if (ret < 0) {
ERR("UST app event %s disable failed for app (pid: %d) "
ua_event->attr.name, app->pid);
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_disable(app->sock, ua_chan->obj);
if (ret < 0) {
ERR("UST app channel %s disable failed for app (pid: %d) "
ua_chan->name, app->pid);
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_enable(app->sock, ua_chan->obj);
if (ret < 0) {
ERR("UST app channel %s enable failed for app (pid: %d) "
ua_chan->name, app->pid);
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_enable(app->sock, ua_event->obj);
if (ret < 0) {
ERR("UST app event %s enable failed for app (pid: %d) "
ua_event->attr.name, app->pid);
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
int ret;
struct lttng_ust_channel_attr uattr;
+ health_code_update(&health_thread_cmd);
+
uattr.overwrite = ua_sess->metadata->attr.overwrite;
uattr.subbuf_size = ua_sess->metadata->attr.subbuf_size;
uattr.num_subbuf = ua_sess->metadata->attr.num_subbuf;
ua_sess->metadata->handle = ua_sess->metadata->obj->handle;
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
/* We are going to receive 2 fds, we need to reserve them. */
ret = lttng_fd_get(LTTNG_FD_APPS, 2);
if (ret < 0) {
}
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret;
+ health_code_update(&health_thread_cmd);
+
/* TODO: remove cast and use lttng-ust-abi.h */
/* We are going to receive 2 fds, we need to reserve them. */
ERR("Exhausted number of available FD upon create channel");
goto error;
}
+
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_create_channel(app->sock, ua_sess->handle,
(struct lttng_ust_channel_attr *)&ua_chan->attr, &ua_chan->obj);
if (ret < 0) {
DBG2("UST app channel %s created successfully for pid:%d and sock:%d",
ua_chan->name, app->pid, app->sock);
+ health_code_update(&health_thread_cmd);
+
/* If channel is not enabled, disable it on the tracer */
if (!ua_chan->enabled) {
ret = disable_ust_channel(app, ua_sess, ua_chan);
}
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
{
int ret = 0;
+ health_code_update(&health_thread_cmd);
+
/* Create UST event on tracer */
ret = ustctl_create_event(app->sock, &ua_event->attr, ua_chan->obj,
&ua_event->obj);
if (ret < 0) {
- if (ret == -EEXIST) {
+ if (ret == -EEXIST || ret == -EPERM) {
ret = 0;
goto error;
}
DBG2("UST app event %s created successfully for pid:%d",
ua_event->attr.name, app->pid);
+ health_code_update(&health_thread_cmd);
+
/* If event not enabled, disable it on the tracer */
if (ua_event->enabled == 0) {
ret = disable_ust_event(app, ua_sess, ua_event);
}
error:
+ health_code_update(&health_thread_cmd);
return ret;
}
/* Copy event attributes */
memcpy(&ua_event->attr, &uevent->attr, sizeof(ua_event->attr));
+ /* Copy filter bytecode */
+ if (uevent->filter) {
+ ua_event->filter = zmalloc(sizeof(*ua_event->filter) +
+ uevent->filter->len);
+ if (!ua_event->filter) {
+ return;
+ }
+ memcpy(ua_event->filter, uevent->filter,
+ sizeof(*ua_event->filter) + uevent->filter->len);
+ }
cds_lfht_for_each_entry(uevent->ctx->ht, &iter.iter, uctx, node.node) {
ua_ctx = alloc_ust_app_ctx(&uctx->ctx);
if (ua_ctx == NULL) {
ua_sess->uid = usess->uid;
ua_sess->gid = usess->gid;
- ret = snprintf(ua_sess->path, PATH_MAX, "%s/%s-%d-%s", usess->pathname,
- app->name, app->pid, datetime);
+ ret = snprintf(ua_sess->path, PATH_MAX, "%s-%d-%s/", app->name, app->pid,
+ datetime);
if (ret < 0) {
PERROR("asprintf UST shadow copy session");
/* TODO: We cannot return an error from here.. */
int ret;
struct ust_app_session *ua_sess;
+ health_code_update(&health_thread_cmd);
+
ua_sess = lookup_session_by_app(usess, app);
if (ua_sess == NULL) {
DBG2("UST app pid: %d session id %d not found, creating it",
shadow_copy_session(ua_sess, usess, app);
}
+ health_code_update(&health_thread_cmd);
+
if (ua_sess->handle == -1) {
ret = ustctl_create_session(app->sock);
if (ret < 0) {
}
end:
+ health_code_update(&health_thread_cmd);
return ua_sess;
error:
delete_ust_app_session(-1, ua_sess);
+ health_code_update(&health_thread_cmd);
return NULL;
}
return ret;
}
+/*
+ * Set UST filter for the event on the tracer.
+ */
+static
+int set_ust_app_event_filter(struct ust_app_session *ua_sess,
+ struct ust_app_event *ua_event,
+ struct lttng_filter_bytecode *bytecode,
+ struct ust_app *app)
+{
+ int ret = 0;
+
+ DBG2("UST app adding context to event %s", ua_event->name);
+
+ /* Copy filter bytecode */
+ ua_event->filter = zmalloc(sizeof(*ua_event->filter) + bytecode->len);
+ if (!ua_event->filter) {
+ return -ENOMEM;
+ }
+ memcpy(ua_event->filter, bytecode,
+ sizeof(*ua_event->filter) + bytecode->len);
+ ret = set_ust_event_filter(ua_event, app);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
/*
* Enable on the tracer side a ust app event for the session and channel.
*/
goto error;
}
- ret = run_as_mkdir(ua_sess->path, S_IRWXU | S_IRWXG,
- ua_sess->uid, ua_sess->gid);
- if (ret < 0) {
- PERROR("mkdir UST metadata");
- goto error;
- }
-
ret = snprintf(ua_sess->metadata->pathname, PATH_MAX,
"%s/metadata", ua_sess->path);
if (ret < 0) {
struct ust_app *lta;
int ret;
- if ((msg->bits_per_long == 64 && ust_consumerd64_fd == -EINVAL)
- || (msg->bits_per_long == 32 && ust_consumerd32_fd == -EINVAL)) {
+ if ((msg->bits_per_long == 64 &&
+ (uatomic_read(&ust_consumerd64_fd) == -EINVAL))
+ || (msg->bits_per_long == 32 &&
+ (uatomic_read(&ust_consumerd32_fd) == -EINVAL))) {
ERR("Registration failed: application \"%s\" (pid: %d) has "
"%d-bit long, but no consumerd for this long size is available.\n",
msg->name, msg->pid, msg->bits_per_long);
cds_lfht_for_each_entry(ust_app_ht->ht, &iter.iter, app, pid_n.node) {
struct lttng_ust_tracepoint_iter uiter;
+ health_code_update(&health_thread_cmd);
+
if (!app->compatible) {
/*
* TODO: In time, we should notice the caller of this error by
while ((ret = ustctl_tracepoint_list_get(app->sock, handle,
&uiter)) != -ENOENT) {
+ health_code_update(&health_thread_cmd);
if (count >= nbmem) {
DBG2("Reallocating event list from %zu to %zu entries", nbmem,
2 * nbmem);
rcu_error:
rcu_read_unlock();
error:
+ health_code_update(&health_thread_cmd);
+ return ret;
+}
+
+/*
+ * Fill events array with all events name of all registered apps.
+ */
+int ust_app_list_event_fields(struct lttng_event_field **fields)
+{
+ int ret, handle;
+ size_t nbmem, count = 0;
+ struct lttng_ht_iter iter;
+ struct ust_app *app;
+ struct lttng_event_field *tmp;
+
+ nbmem = UST_APP_EVENT_LIST_SIZE;
+ tmp = zmalloc(nbmem * sizeof(struct lttng_event_field));
+ if (tmp == NULL) {
+ PERROR("zmalloc ust app event fields");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ rcu_read_lock();
+
+ cds_lfht_for_each_entry(ust_app_ht->ht, &iter.iter, app, pid_n.node) {
+ struct lttng_ust_field_iter uiter;
+
+ health_code_update(&health_thread_cmd);
+
+ if (!app->compatible) {
+ /*
+ * TODO: In time, we should notice the caller of this error by
+ * telling him that this is a version error.
+ */
+ continue;
+ }
+ handle = ustctl_tracepoint_field_list(app->sock);
+ if (handle < 0) {
+ ERR("UST app list event fields getting handle failed for app pid %d",
+ app->pid);
+ continue;
+ }
+
+ while ((ret = ustctl_tracepoint_field_list_get(app->sock, handle,
+ &uiter)) != -ENOENT) {
+ health_code_update(&health_thread_cmd);
+ if (count >= nbmem) {
+ DBG2("Reallocating event field list from %zu to %zu entries", nbmem,
+ 2 * nbmem);
+ nbmem *= 2;
+ tmp = realloc(tmp, nbmem * sizeof(struct lttng_event_field));
+ if (tmp == NULL) {
+ PERROR("realloc ust app event fields");
+ ret = -ENOMEM;
+ goto rcu_error;
+ }
+ }
+
+ memcpy(tmp[count].field_name, uiter.field_name, LTTNG_UST_SYM_NAME_LEN);
+ tmp[count].type = uiter.type;
+
+ memcpy(tmp[count].event.name, uiter.event_name, LTTNG_UST_SYM_NAME_LEN);
+ tmp[count].event.loglevel = uiter.loglevel;
+ tmp[count].event.type = LTTNG_UST_TRACEPOINT;
+ tmp[count].event.pid = app->pid;
+ tmp[count].event.enabled = -1;
+ count++;
+ }
+ }
+
+ ret = count;
+ *fields = tmp;
+
+ DBG2("UST app list event fields done (%zu events)", count);
+
+rcu_error:
+ rcu_read_unlock();
+error:
+ health_code_update(&health_thread_cmd);
return ret;
}
struct ust_app_session *ua_sess;
struct ust_app_channel *ua_chan;
struct ltt_ust_stream *ustream;
- int consumerd_fd;
+ struct consumer_socket *socket;
DBG("Starting tracing for ust app pid %d", app->pid);
goto skip_setup;
}
+ /* Create directories if consumer is LOCAL and has a path defined. */
+ if (usess->consumer->type == CONSUMER_DST_LOCAL &&
+ strlen(usess->consumer->dst.trace_path) > 0) {
+ ret = run_as_mkdir_recursive(usess->consumer->dst.trace_path,
+ S_IRWXU | S_IRWXG, usess->uid, usess->gid);
+ if (ret < 0) {
+ if (ret != -EEXIST) {
+ ERR("Trace directory creation error");
+ ret = -1;
+ goto error_rcu_unlock;
+ }
+ }
+ }
+
/* Indicate that the session has been started once */
ua_sess->started = 1;
free(ustream);
goto error_rcu_unlock;
}
+
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_create_stream(app->sock, ua_chan->obj,
&ustream->obj);
if (ret < 0) {
}
ustream->handle = ustream->obj->handle;
+ health_code_update(&health_thread_cmd);
+
/* Order is important */
cds_list_add_tail(&ustream->list, &ua_chan->streams.head);
- ret = snprintf(ustream->pathname, PATH_MAX, "%s/%s_%u",
- ua_sess->path, ua_chan->name,
- ua_chan->streams.count++);
+ ret = snprintf(ustream->name, sizeof(ustream->name), "%s_%u",
+ ua_chan->name, ua_chan->streams.count++);
if (ret < 0) {
PERROR("asprintf UST create stream");
/*
*/
continue;
}
- DBG2("UST stream %d ready at %s", ua_chan->streams.count,
- ustream->pathname);
+ DBG2("UST stream %d ready (handle: %d)", ua_chan->streams.count,
+ ustream->handle);
}
+
+ health_code_update(&health_thread_cmd);
}
switch (app->bits_per_long) {
case 64:
- consumerd_fd = ust_consumerd64_fd;
+ socket = consumer_find_socket(uatomic_read(&ust_consumerd64_fd),
+ usess->consumer);
+ if (socket == NULL) {
+ goto skip_setup;
+ }
break;
case 32:
- consumerd_fd = ust_consumerd32_fd;
+ socket = consumer_find_socket(uatomic_read(&ust_consumerd32_fd),
+ usess->consumer);
+ if (socket == NULL) {
+ goto skip_setup;
+ }
break;
default:
ret = -EINVAL;
}
/* Setup UST consumer socket and send fds to it */
- ret = ust_consumer_send_session(consumerd_fd, ua_sess);
+ ret = ust_consumer_send_session(ua_sess, usess->consumer, socket);
if (ret < 0) {
goto error_rcu_unlock;
}
+ health_code_update(&health_thread_cmd);
+
skip_setup:
/* This start the UST tracing */
ret = ustctl_start_session(app->sock, ua_sess->handle);
goto error_rcu_unlock;
}
+ health_code_update(&health_thread_cmd);
+
/* Quiescent wait after starting trace */
ustctl_wait_quiescent(app->sock);
end:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return 0;
error_rcu_unlock:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return -1;
}
*/
assert(ua_sess->started == 1);
+ health_code_update(&health_thread_cmd);
+
/* This inhibits UST tracing */
ret = ustctl_stop_session(app->sock, ua_sess->handle);
if (ret < 0) {
goto error_rcu_unlock;
}
+ health_code_update(&health_thread_cmd);
+
/* Quiescent wait after stopping trace */
ustctl_wait_quiescent(app->sock);
+ health_code_update(&health_thread_cmd);
+
/* Flushing buffers */
cds_lfht_for_each_entry(ua_sess->channels->ht, &iter.iter, ua_chan,
node.node) {
+ health_code_update(&health_thread_cmd);
ret = ustctl_sock_flush_buffer(app->sock, ua_chan->obj);
if (ret < 0) {
ERR("UST app PID %d channel %s flush failed with ret %d",
}
}
+ health_code_update(&health_thread_cmd);
+
/* Flush all buffers before stopping */
ret = ustctl_sock_flush_buffer(app->sock, ua_sess->metadata->obj);
if (ret < 0) {
end:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return 0;
error_rcu_unlock:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return -1;
}
obj.shm_fd = -1;
obj.wait_fd = -1;
obj.memory_map_size = 0;
+ health_code_update(&health_thread_cmd);
ustctl_release_object(app->sock, &obj);
+ health_code_update(&health_thread_cmd);
delete_ust_app_session(app->sock, ua_sess);
/* Quiescent wait after stopping trace */
end:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return 0;
error_rcu_unlock:
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return -1;
}
continue;
}
}
+ ret = set_ust_event_filter(ua_event, app);
+ if (ret < 0) {
+ /* FIXME: Should we quit here or continue... */
+ continue;
+ }
}
}
return ret;
}
+/*
+ * Add context to a specific event in a channel for global UST domain.
+ */
+int ust_app_set_filter_event_glb(struct ltt_ust_session *usess,
+ struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
+ struct lttng_filter_bytecode *bytecode)
+{
+ int ret = 0;
+ struct lttng_ht_node_str *ua_chan_node, *ua_event_node;
+ struct lttng_ht_iter iter, uiter;
+ struct ust_app_session *ua_sess;
+ struct ust_app_event *ua_event;
+ struct ust_app_channel *ua_chan = NULL;
+ struct ust_app *app;
+
+ rcu_read_lock();
+
+ cds_lfht_for_each_entry(ust_app_ht->ht, &iter.iter, app, pid_n.node) {
+ if (!app->compatible) {
+ /*
+ * TODO: In time, we should notice the caller of this error by
+ * telling him that this is a version error.
+ */
+ continue;
+ }
+ ua_sess = lookup_session_by_app(usess, app);
+ if (ua_sess == NULL) {
+ continue;
+ }
+
+ /* Lookup channel in the ust app session */
+ lttng_ht_lookup(ua_sess->channels, (void *)uchan->name, &uiter);
+ ua_chan_node = lttng_ht_iter_get_node_str(&uiter);
+ if (ua_chan_node == NULL) {
+ continue;
+ }
+ ua_chan = caa_container_of(ua_chan_node, struct ust_app_channel,
+ node);
+
+ lttng_ht_lookup(ua_chan->events, (void *)uevent->attr.name, &uiter);
+ ua_event_node = lttng_ht_iter_get_node_str(&uiter);
+ if (ua_event_node == NULL) {
+ continue;
+ }
+ ua_event = caa_container_of(ua_event_node, struct ust_app_event,
+ node);
+
+ ret = set_ust_app_event_filter(ua_sess, ua_event, bytecode, app);
+ if (ret < 0) {
+ continue;
+ }
+ }
+
+ rcu_read_unlock();
+ return ret;
+}
+
/*
* Enable event for a channel from a UST session for a specific PID.
*/
app = find_app_by_sock(sock);
assert(app);
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_tracer_version(sock, &app->version);
if (ret < 0) {
goto error;
}
/* Validate version */
- if (app->version.major > UST_APP_MAJOR_VERSION) {
+ if (app->version.major != UST_APP_MAJOR_VERSION) {
goto error;
}
- DBG2("UST app PID %d is compatible with major version %d "
- "(supporting <= %d)", app->pid, app->version.major,
+ DBG2("UST app PID %d is compatible with internal major version %d "
+ "(supporting == %d)", app->pid, app->version.major,
UST_APP_MAJOR_VERSION);
app->compatible = 1;
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return 0;
error:
- DBG2("UST app PID %d is not compatible with major version %d "
- "(supporting <= %d)", app->pid, app->version.major,
+ DBG2("UST app PID %d is not compatible with internal major version %d "
+ "(supporting == %d)", app->pid, app->version.major,
UST_APP_MAJOR_VERSION);
app->compatible = 0;
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
return -1;
}
continue;
}
+ health_code_update(&health_thread_cmd);
+
ret = ustctl_calibrate(app->sock, calibrate);
if (ret < 0) {
switch (ret) {
rcu_read_unlock();
+ health_code_update(&health_thread_cmd);
+
return ret;
}
projects / lttng-tools.git / blobdiff