/* Set to 1 when a SIGUSR1 signal is received. */
static int recv_child_signal;
+static struct lttng_kernel_tracer_version kernel_tracer_version;
+static struct lttng_kernel_tracer_abi_version kernel_tracer_abi_version;
+
/*
* Consumer daemon specific control data. Every value not initialized here is
* set to 0 by the static definition.
if (!cmd_socket_wrapper) {
goto error;
}
+ cmd_socket_wrapper->lock = &consumer_data->lock;
ret = consumer_send_channel_monitor_pipe(cmd_socket_wrapper,
consumer_data->channel_monitor_pipe);
}
/*
- * This thread manage application communication.
+ * This thread receives application command sockets (FDs) on the
+ * apps_cmd_pipe and waits (polls) on them until they are closed
+ * or an error occurs.
+ *
+ * At that point, it flushes the data (tracing and metadata) associated
+ * with this application and tears down ust app sessions and other
+ * associated data structures through ust_app_unregister().
+ *
+ * Note that this thread never sends commands to the applications
+ * through the command sockets; it merely listens for hang-ups
+ * and errors on those sockets and cleans-up as they occur.
*/
static void *thread_manage_apps(void *data)
{
}
/* Validate kernel version */
- ret = kernel_validate_version(kernel_tracer_fd);
+ ret = kernel_validate_version(kernel_tracer_fd, &kernel_tracer_version,
+ &kernel_tracer_abi_version);
if (ret < 0) {
goto error_version;
}
goto error;
}
- /* Create directory(ies) on local filesystem. */
- if (session->kernel_session->consumer->type == CONSUMER_DST_LOCAL &&
- strlen(session->kernel_session->consumer->dst.trace_path) > 0) {
- ret = run_as_mkdir_recursive(
- session->kernel_session->consumer->dst.trace_path,
- S_IRWXU | S_IRWXG, session->uid, session->gid);
- if (ret < 0) {
- if (errno != EEXIST) {
- ERR("Trace directory creation error");
- goto error;
- }
- }
- }
-
session->kernel_session->uid = session->uid;
session->kernel_session->gid = session->gid;
session->kernel_session->output_traces = session->output_traces;