}
output->enabled = obj->enabled;
output->net_seq_index = obj->net_seq_index;
- memcpy(output->subdir, obj->subdir, PATH_MAX);
+ memcpy(output->subdir, obj->subdir, sizeof(output->subdir));
output->snapshot = obj->snapshot;
output->relay_major_version = obj->relay_major_version;
output->relay_minor_version = obj->relay_minor_version;
goto error;
}
- strncpy(obj->subdir, tmp_path, sizeof(obj->subdir));
- DBG3("Consumer set network uri subdir path %s", tmp_path);
+ if (lttng_strncpy(obj->dst.net.base_dir, tmp_path,
+ sizeof(obj->dst.net.base_dir))) {
+ ret = -LTTNG_ERR_INVALID;
+ goto error;
+ }
+ DBG3("Consumer set network uri base_dir path %s", tmp_path);
}
return 0;
/*
* Send file descriptor to consumer via sock.
+ *
+ * The consumer socket lock must be held by the caller.
*/
int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd)
{
assert(fds);
assert(sock);
assert(nb_fd > 0);
+ assert(pthread_mutex_trylock(sock->lock) == EBUSY);
ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd);
if (ret < 0) {
}
ret = consumer_recv_status_reply(sock);
-
error:
return ret;
}
/*
* Consumer send communication message structure to consumer.
+ *
+ * The consumer socket lock must be held by the caller.
*/
int consumer_send_msg(struct consumer_socket *sock,
struct lttcomm_consumer_msg *msg)
assert(msg);
assert(sock);
+ assert(pthread_mutex_trylock(sock->lock) == EBUSY);
ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg));
if (ret < 0) {
/*
* Consumer send channel communication message structure to consumer.
+ *
+ * The consumer socket lock must be held by the caller.
*/
int consumer_send_channel(struct consumer_socket *sock,
struct lttcomm_consumer_msg *msg)
unsigned int switch_timer_interval,
unsigned int read_timer_interval,
unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval,
int output,
int type,
uint64_t session_id,
uint64_t session_id_per_pid,
unsigned int monitor,
uint32_t ust_app_uid,
+ int64_t blocking_timeout,
const char *root_shm_path,
const char *shm_path)
{
msg->u.ask_channel.switch_timer_interval = switch_timer_interval;
msg->u.ask_channel.read_timer_interval = read_timer_interval;
msg->u.ask_channel.live_timer_interval = live_timer_interval;
+ msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval;
msg->u.ask_channel.output = output;
msg->u.ask_channel.type = type;
msg->u.ask_channel.session_id = session_id;
msg->u.ask_channel.tracefile_count = tracefile_count;
msg->u.ask_channel.monitor = monitor;
msg->u.ask_channel.ust_app_uid = ust_app_uid;
+ msg->u.ask_channel.blocking_timeout = blocking_timeout;
memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid));
uint64_t tracefile_size,
uint64_t tracefile_count,
unsigned int monitor,
- unsigned int live_timer_interval)
+ unsigned int live_timer_interval,
+ unsigned int monitor_timer_interval)
{
assert(msg);
msg->u.channel.tracefile_count = tracefile_count;
msg->u.channel.monitor = monitor;
msg->u.channel.live_timer_interval = live_timer_interval;
+ msg->u.channel.monitor_timer_interval = monitor_timer_interval;
strncpy(msg->u.channel.pathname, pathname,
sizeof(msg->u.channel.pathname));
/*
* Send relayd socket to consumer associated with a session name.
*
+ * The consumer socket lock must be held by the caller.
+ *
* On success return positive value. On error, negative value.
*/
int consumer_send_relayd_socket(struct consumer_socket *consumer_sock,
return ret;
}
+static
+int consumer_send_pipe(struct consumer_socket *consumer_sock,
+ enum lttng_consumer_command cmd, int pipe)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+ const char *pipe_name;
+ const char *command_name;
+
+ switch (cmd) {
+ case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE:
+ pipe_name = "channel monitor";
+ command_name = "SET_CHANNEL_MONITOR_PIPE";
+ break;
+ case LTTNG_CONSUMER_SET_CHANNEL_ROTATE_PIPE:
+ pipe_name = "channel rotate";
+ command_name = "SET_CHANNEL_ROTATE_PIPE";
+ break;
+ default:
+ ERR("Unexpected command received in %s (cmd = %d)", __func__,
+ (int) cmd);
+ abort();
+ }
+
+ /* Code flow error. Safety net. */
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = cmd;
+
+ pthread_mutex_lock(consumer_sock->lock);
+ DBG3("Sending %s command to consumer", command_name);
+ ret = consumer_send_msg(consumer_sock, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+ DBG3("Sending %s pipe %d to consumer on socket %d",
+ pipe_name,
+ pipe, *consumer_sock->fd_ptr);
+ ret = consumer_send_fds(consumer_sock, &pipe, 1);
+ if (ret < 0) {
+ goto error;
+ }
+
+ DBG2("%s pipe successfully sent", pipe_name);
+error:
+ pthread_mutex_unlock(consumer_sock->lock);
+ return ret;
+}
+
+int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock,
+ int pipe)
+{
+ return consumer_send_pipe(consumer_sock,
+ LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe);
+}
+
+int consumer_send_channel_rotate_pipe(struct consumer_socket *consumer_sock,
+ int pipe)
+{
+ return consumer_send_pipe(consumer_sock,
+ LTTNG_CONSUMER_SET_CHANNEL_ROTATE_PIPE, pipe);
+}
+
/*
* Set consumer subdirectory using the session name and a generated datetime if
* needed. This is appended to the current subdirectory.
goto error;
}
- strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir));
+ if (lttng_strncpy(consumer->subdir, tmp_path,
+ sizeof(consumer->subdir))) {
+ ret = -EINVAL;
+ goto error;
+ }
DBG2("Consumer subdir set to %s", consumer->subdir);
error:
return ret;
}
+/*
+ * Send a clear quiescent command to consumer using the given channel key.
+ *
+ * Return 0 on success else a negative value.
+ */
+int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG2("Consumer clear quiescent channel key %" PRIu64, key);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL;
+ msg.u.clear_quiescent_channel.key = key;
+
+ pthread_mutex_lock(socket->lock);
+ health_code_update();
+
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto end;
+ }
+
+end:
+ health_code_update();
+ pthread_mutex_unlock(socket->lock);
+ return ret;
+}
+
/*
* Send a close metadata command to consumer using the given channel key.
* Called with registry lock held.
*/
int consumer_push_metadata(struct consumer_socket *socket,
uint64_t metadata_key, char *metadata_str, size_t len,
- size_t target_offset)
+ size_t target_offset, uint64_t version)
{
int ret;
struct lttcomm_consumer_msg msg;
msg.u.push_metadata.key = metadata_key;
msg.u.push_metadata.target_offset = target_offset;
msg.u.push_metadata.len = len;
+ msg.u.push_metadata.version = version;
health_code_update();
ret = consumer_send_msg(socket, &msg);
msg.u.snapshot_channel.use_relayd = 1;
ret = snprintf(msg.u.snapshot_channel.pathname,
sizeof(msg.u.snapshot_channel.pathname),
- "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir,
- output->name, output->datetime, output->nb_snapshot,
+ "%s/%s/%s-%s-%" PRIu64 "%s",
+ output->consumer->dst.net.base_dir,
+ output->consumer->subdir,
+ output->name, output->datetime,
+ output->nb_snapshot,
session_path);
if (ret < 0) {
ret = -LTTNG_ERR_NOMEM;
} else {
ret = snprintf(msg.u.snapshot_channel.pathname,
sizeof(msg.u.snapshot_channel.pathname),
- "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path,
- output->name, output->datetime, output->nb_snapshot,
+ "%s/%s-%s-%" PRIu64 "%s",
+ output->consumer->dst.session_root_path,
+ output->name, output->datetime,
+ output->nb_snapshot,
session_path);
if (ret < 0) {
ret = -LTTNG_ERR_NOMEM;
}
health_code_update();
+ pthread_mutex_lock(socket->lock);
ret = consumer_send_msg(socket, &msg);
+ pthread_mutex_unlock(socket->lock);
if (ret < 0) {
goto error;
}
rcu_read_unlock();
return ret;
}
+
+/*
+ * Ask the consumer to rotate a channel.
+ * domain_path contains "/kernel" for kernel or the complete path for UST
+ * (ex: /ust/uid/1000/64-bit);
+ *
+ * The new_chunk_id is the session->rotate_count that has been incremented
+ * when the rotation started. On the relay, this allows to keep track in which
+ * chunk each stream is currently writing to (for the rotate_pending operation).
+ */
+int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key,
+ uid_t uid, gid_t gid, struct consumer_output *output,
+ char *domain_path, bool is_metadata_channel,
+ uint64_t new_chunk_id,
+ bool *rotate_pending_relay)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG("Consumer rotate channel key %" PRIu64, key);
+
+ pthread_mutex_lock(socket->lock);
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL;
+ msg.u.rotate_channel.key = key;
+ msg.u.rotate_channel.metadata = !!is_metadata_channel;
+ msg.u.rotate_channel.new_chunk_id = new_chunk_id;
+
+ if (output->type == CONSUMER_DST_NET) {
+ msg.u.rotate_channel.relayd_id = output->net_seq_index;
+ ret = snprintf(msg.u.rotate_channel.pathname,
+ sizeof(msg.u.rotate_channel.pathname), "%s%s%s",
+ output->dst.net.base_dir,
+ output->chunk_path, domain_path);
+ if (ret < 0 || ret == sizeof(msg.u.rotate_channel.pathname)) {
+ ERR("Failed to format channel path name when asking consumer to rotate channel");
+ ret = -1;
+ goto error;
+ }
+ *rotate_pending_relay = true;
+ } else {
+ msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL;
+ ret = snprintf(msg.u.rotate_channel.pathname,
+ sizeof(msg.u.rotate_channel.pathname), "%s%s%s",
+ output->dst.session_root_path,
+ output->chunk_path, domain_path);
+ if (ret < 0 || ret == sizeof(msg.u.rotate_channel.pathname)) {
+ ERR("Failed to format channel path name when asking consumer to rotate channel");
+ ret = -1;
+ goto error;
+ }
+ }
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ pthread_mutex_unlock(socket->lock);
+ health_code_update();
+ return ret;
+}
+
+int consumer_rotate_rename(struct consumer_socket *socket, uint64_t session_id,
+ const struct consumer_output *output, const char *old_path,
+ const char *new_path, uid_t uid, gid_t gid)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+ size_t old_path_length, new_path_length;
+
+ assert(socket);
+ assert(old_path);
+ assert(new_path);
+
+ DBG("Consumer rotate rename session %" PRIu64 ", old path = \"%s\", new_path = \"%s\"",
+ session_id, old_path, new_path);
+
+ old_path_length = strlen(old_path);
+ if (old_path_length >= sizeof(msg.u.rotate_rename.old_path)) {
+ ERR("consumer_rotate_rename: old path length (%zu bytes) exceeds the maximal length allowed by the consumer protocol (%zu bytes)",
+ old_path_length + 1, sizeof(msg.u.rotate_rename.old_path));
+ ret = -1;
+ goto error;
+ }
+
+ new_path_length = strlen(new_path);
+ if (new_path_length >= sizeof(msg.u.rotate_rename.new_path)) {
+ ERR("consumer_rotate_rename: new path length (%zu bytes) exceeds the maximal length allowed by the consumer protocol (%zu bytes)",
+ new_path_length + 1, sizeof(msg.u.rotate_rename.new_path));
+ ret = -1;
+ goto error;
+ }
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_ROTATE_RENAME;
+ msg.u.rotate_rename.session_id = session_id;
+ msg.u.rotate_rename.uid = uid;
+ msg.u.rotate_rename.gid = gid;
+ strcpy(msg.u.rotate_rename.old_path, old_path);
+ strcpy(msg.u.rotate_rename.new_path, new_path);
+
+ if (output->type == CONSUMER_DST_NET) {
+ msg.u.rotate_rename.relayd_id = output->net_seq_index;
+ } else {
+ msg.u.rotate_rename.relayd_id = -1ULL;
+ }
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the relay if a rotation is still pending. Must be called with the socket
+ * lock held.
+ *
+ * Return 1 if the rotation is still pending, 0 if finished, a negative value
+ * on error.
+ */
+int consumer_rotate_pending_relay(struct consumer_socket *socket,
+ struct consumer_output *output, uint64_t session_id,
+ uint64_t chunk_id)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+ uint32_t pending = 0;
+
+ assert(socket);
+
+ DBG("Consumer rotate pending on relay for session %" PRIu64 ", chunk id %" PRIu64,
+ session_id, chunk_id);
+ assert(output->type == CONSUMER_DST_NET);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_ROTATE_PENDING_RELAY;
+ msg.u.rotate_pending_relay.session_id = session_id;
+ msg.u.rotate_pending_relay.relayd_id = output->net_seq_index;
+ msg.u.rotate_pending_relay.chunk_id = chunk_id;
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+ ret = consumer_socket_recv(socket, &pending, sizeof(pending));
+ if (ret < 0) {
+ goto error;
+ }
+
+ ret = pending;
+
+error:
+ health_code_update();
+ return ret;
+}
+
+/*
+ * Ask the consumer to create a directory.
+ *
+ * Called with the consumer socket lock held.
+ */
+int consumer_mkdir(struct consumer_socket *socket, uint64_t session_id,
+ const struct consumer_output *output, const char *path,
+ uid_t uid, gid_t gid)
+{
+ int ret;
+ struct lttcomm_consumer_msg msg;
+
+ assert(socket);
+
+ DBG("Consumer mkdir %s in session %" PRIu64, path, session_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.cmd_type = LTTNG_CONSUMER_MKDIR;
+ msg.u.mkdir.session_id = session_id;
+ msg.u.mkdir.uid = uid;
+ msg.u.mkdir.gid = gid;
+ ret = snprintf(msg.u.mkdir.path, sizeof(msg.u.mkdir.path), "%s", path);
+ if (ret < 0 || ret >= sizeof(msg.u.mkdir.path)) {
+ ERR("Format path");
+ ret = -1;
+ goto error;
+ }
+
+ if (output->type == CONSUMER_DST_NET) {
+ msg.u.mkdir.relayd_id = output->net_seq_index;
+ } else {
+ msg.u.mkdir.relayd_id = -1ULL;
+ }
+
+ health_code_update();
+ ret = consumer_send_msg(socket, &msg);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ health_code_update();
+ return ret;
+}