#define _LGPL_SOURCE
#include <common/common.h>
+#include <common/utils.h>
+#include <common/compat/uuid.h>
#include <urcu/rculist.h>
-#include "lttng-relayd.h"
#include "ctf-trace.h"
+#include "lttng-relayd.h"
#include "session.h"
+#include "sessiond-trace-chunks.h"
#include "stream.h"
+#include <common/defaults.h>
/* Global session id used in the session creation. */
static uint64_t last_relay_session_id;
static pthread_mutex_t last_relay_session_id_lock = PTHREAD_MUTEX_INITIALIZER;
+static int session_set_anonymous_chunk(struct relay_session *session)
+{
+ int ret = 0;
+ struct lttng_trace_chunk *chunk = NULL;
+ enum lttng_trace_chunk_status status;
+ struct lttng_directory_handle output_directory;
+ char *output_path;
+ bool output_path_allocated = false;
+
+ if (!opt_output_path) {
+ /* No output path defined */
+ const char *home_dir = utils_get_home_dir();
+ if (!home_dir) {
+ ERR("Home path not found."
+ " Please specify an output path using -o, --output PATH");
+ ret = -1;
+ goto end;
+ }
+ ret = asprintf(&output_path, "%s/%s", home_dir, DEFAULT_TRACE_DIR_NAME);
+ if (ret < 0) {
+ PERROR("asprintf trace dir name");
+ ret = -1;
+ goto end;
+ }
+ output_path_allocated = true;
+ } else {
+ output_path = opt_output_path;
+ output_path_allocated = false;
+ }
+
+ ret = lttng_directory_handle_init(&output_directory, output_path);
+ if (ret) {
+ goto end;
+ }
+
+ chunk = lttng_trace_chunk_create_anonymous();
+ if (!chunk) {
+ goto end;
+ }
+
+ status = lttng_trace_chunk_set_credentials_current_user(chunk);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_trace_chunk_set_as_owner(chunk, &output_directory);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ret = -1;
+ goto end;
+ }
+ session->current_trace_chunk = chunk;
+ chunk = NULL;
+end:
+ lttng_trace_chunk_put(chunk);
+ lttng_directory_handle_fini(&output_directory);
+ if (output_path_allocated) {
+ free(output_path);
+ }
+ return ret;
+}
+
/*
* Create a new session by assigning a new session ID.
*
* Return allocated session or else NULL.
*/
struct relay_session *session_create(const char *session_name,
- const char *hostname, uint32_t live_timer,
- bool snapshot, uint32_t major, uint32_t minor)
+ const char *hostname, const char *base_path,
+ uint32_t live_timer,
+ bool snapshot,
+ const lttng_uuid sessiond_uuid,
+ const uint64_t *id_sessiond,
+ const uint64_t *current_chunk_id,
+ const time_t *creation_time,
+ uint32_t major,
+ uint32_t minor,
+ bool session_name_contains_creation_time)
{
- struct relay_session *session;
+ int ret;
+ struct relay_session *session = NULL;
+
+ if (session_name && strstr(session_name, ".")) {
+ ERR("Illegal character in session name: \"%s\"",
+ session_name);
+ goto error;
+ }
+ if (base_path && strstr(base_path, "../")) {
+ ERR("Invalid session base path walks up the path hierarchy: \"%s\"",
+ base_path);
+ goto error;
+ }
+ if (hostname && strstr(hostname, ".")) {
+ ERR("Invalid character in hostname: \"%s\"",
+ hostname);
+ goto error;
+ }
session = zmalloc(sizeof(*session));
if (!session) {
- PERROR("relay session zmalloc");
+ PERROR("Failed to allocate session");
goto error;
}
if (lttng_strncpy(session->session_name, session_name,
sizeof(session->session_name))) {
+ WARN("Session name exceeds maximal allowed length");
goto error;
}
if (lttng_strncpy(session->hostname, hostname,
sizeof(session->hostname))) {
+ WARN("Hostname exceeds maximal allowed length");
+ goto error;
+ }
+ if (lttng_strncpy(session->base_path, base_path,
+ sizeof(session->base_path))) {
+ WARN("Base path exceeds maximal allowed length");
goto error;
}
+ if (creation_time) {
+ LTTNG_OPTIONAL_SET(&session->creation_time, *creation_time);
+ }
+ session->session_name_contains_creation_time =
+ session_name_contains_creation_time;
+
session->ctf_traces_ht = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
if (!session->ctf_traces_ht) {
goto error;
session->live_timer = live_timer;
session->snapshot = snapshot;
+ lttng_uuid_copy(session->sessiond_uuid, sessiond_uuid);
+
+ if (id_sessiond) {
+ LTTNG_OPTIONAL_SET(&session->id_sessiond, *id_sessiond);
+ }
+
+ ret = sessiond_trace_chunk_registry_session_created(
+ sessiond_trace_chunk_registry, sessiond_uuid);
+ if (ret) {
+ goto error;
+ }
+
+ if (id_sessiond && current_chunk_id) {
+ session->current_trace_chunk =
+ sessiond_trace_chunk_registry_get_chunk(
+ sessiond_trace_chunk_registry,
+ session->sessiond_uuid,
+ session->id_sessiond.value,
+ *current_chunk_id);
+ if (!session->current_trace_chunk) {
+ char uuid_str[UUID_STR_LEN];
+
+ lttng_uuid_to_str(sessiond_uuid, uuid_str);
+ ERR("Could not find trace chunk: sessiond = {%s}, sessiond session id = %" PRIu64 ", trace chunk id = %" PRIu64,
+ uuid_str, *id_sessiond,
+ *current_chunk_id);
+ }
+ } else if (!id_sessiond) {
+ /*
+ * Pre-2.11 peers will not announce trace chunks. An
+ * anonymous trace chunk which will remain set for the
+ * duration of the session is created.
+ */
+ ret = session_set_anonymous_chunk(session);
+ if (ret) {
+ goto error;
+ }
+ }
lttng_ht_add_unique_u64(sessions_ht, &session->session_n);
return session;
error:
- free(session);
+ session_put(session);
return NULL;
}
ret = session_delete(session);
assert(!ret);
+ lttng_trace_chunk_put(session->current_trace_chunk);
+ session->current_trace_chunk = NULL;
+ lttng_trace_chunk_put(session->pending_closure_trace_chunk);
+ session->pending_closure_trace_chunk = NULL;
+ ret = sessiond_trace_chunk_registry_session_destroyed(
+ sessiond_trace_chunk_registry, session->sessiond_uuid);
+ assert(!ret);
call_rcu(&session->rcu_node, rcu_destroy_session);
}
projects / lttng-tools.git / blobdiff