* Send command. Fill up the header and append the data.
*/
static int send_command(struct lttcomm_relayd_sock *rsock,
- enum lttcomm_relayd_command cmd, void *data, size_t size,
+ enum lttcomm_relayd_command cmd, const void *data, size_t size,
int flags)
{
int ret;
memcpy(buf + sizeof(header), data, size);
}
+ DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size);
ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags);
if (ret < 0) {
+ PERROR("Failed to send command %d of size %" PRIu64,
+ (int) cmd, buf_size);
ret = -errno;
goto error;
}
-
- DBG3("Relayd sending command %d of size %" PRIu64, cmd, buf_size);
-
error:
free(buf);
alloc_error:
* support the live reading capability.
*/
static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock,
- uint64_t *session_id, char *session_name, char *hostname,
- int session_live_timer, unsigned int snapshot)
+ char *session_name, char *hostname, int session_live_timer,
+ unsigned int snapshot)
{
int ret;
struct lttcomm_relayd_create_session_2_4 msg;
/*
* RELAYD_CREATE_SESSION from 2.1 to 2.3.
*/
-static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock,
- uint64_t *session_id)
+static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock)
{
int ret;
case 1:
case 2:
case 3:
- ret = relayd_create_session_2_1(rsock, session_id);
+ ret = relayd_create_session_2_1(rsock);
break;
case 4:
default:
- ret = relayd_create_session_2_4(rsock, session_id, session_name,
+ ret = relayd_create_session_2_4(rsock, session_name,
hostname, session_live_timer, snapshot);
break;
}
* If major versions are compatible, we assign minor_to_use to the
* minor version of the procotol we are going to use for this session.
*
- * Return 0 if compatible else negative value.
+ * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL
+ * otherwise, or a negative value on network errors.
*/
int relayd_version_check(struct lttcomm_relayd_sock *rsock)
{
*/
if (msg.major != rsock->major) {
/* Not compatible */
- ret = -1;
+ ret = LTTNG_ERR_RELAYD_VERSION_FAIL;
DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)",
msg.major, rsock->major);
goto error;
error:
return ret;
}
+
+int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id,
+ const char *new_pathname, uint64_t new_chunk_id,
+ uint64_t seq_num)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_stream *msg = NULL;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t len;
+ int msg_len;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id);
+
+ /* Account for the trailing NULL. */
+ len = strnlen(new_pathname, LTTNG_PATH_MAX) + 1;
+ if (len > LTTNG_PATH_MAX) {
+ ERR("Path used in relayd rotate stream command exceeds the maximal allowed length");
+ ret = -1;
+ goto error;
+ }
+
+ msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len;
+ msg = zmalloc(msg_len);
+ if (!msg) {
+ PERROR("Failed to allocate relayd rotate stream command of %d bytes",
+ msg_len);
+ ret = -1;
+ goto error;
+ }
+
+ if (lttng_strncpy(msg->new_pathname, new_pathname, len)) {
+ ret = -1;
+ ERR("Failed to copy relayd rotate stream command's new path name");
+ goto error;
+ }
+
+ msg->pathname_length = htobe32(len);
+ msg->stream_id = htobe64(stream_id);
+ msg->new_chunk_id = htobe64(new_chunk_id);
+ /*
+ * The seq_num is invalid for metadata streams, but it is ignored on
+ * the relay.
+ */
+ msg->rotate_at_seq_num = htobe64(seq_num);
+
+ /* Send command. */
+ ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0);
+ if (ret < 0) {
+ ERR("Send rotate command");
+ goto error;
+ }
+
+ /* Receive response. */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ ERR("Receive rotate reply");
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd rotate stream replied error %d", reply.ret_code);
+ } else {
+ /* Success. */
+ ret = 0;
+ DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id);
+ }
+
+error:
+ free(msg);
+ return ret;
+}
+
+int relayd_rotate_rename(struct lttcomm_relayd_sock *rsock,
+ const char *old_path, const char *new_path)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_rename *msg = NULL;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t old_path_length, new_path_length;
+ size_t msg_length;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Relayd rename chunk %s to %s", old_path, new_path);
+
+ /* The two paths are sent with a '\0' delimiter between them. */
+ old_path_length = strlen(old_path) + 1;
+ new_path_length = strlen(new_path) + 1;
+
+ msg_length = sizeof(*msg) + old_path_length + new_path_length;
+ msg = zmalloc(msg_length);
+ if (!msg) {
+ PERROR("zmalloc rotate-rename command message");
+ ret = -1;
+ goto error;
+ }
+
+ assert(old_path_length <= UINT32_MAX);
+ msg->old_path_length = htobe32(old_path_length);
+
+ assert(new_path_length <= UINT32_MAX);
+ msg->new_path_length = htobe32(new_path_length);
+
+ strcpy(msg->paths, old_path);
+ strcpy(msg->paths + old_path_length, new_path);
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_ROTATE_RENAME, (const void *) msg,
+ msg_length, 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd rotate rename replied error %d", reply.ret_code);
+ } else {
+ /* Success */
+ ret = 0;
+ }
+
+ DBG("Relayd rotate rename completed successfully");
+
+error:
+ free(msg);
+ return ret;
+}
+
+int relayd_rotate_pending(struct lttcomm_relayd_sock *rsock, uint64_t chunk_id)
+{
+ int ret;
+ struct lttcomm_relayd_rotate_pending msg;
+ struct lttcomm_relayd_rotate_pending_reply reply;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Querying relayd for rotate pending with chunk_id %" PRIu64,
+ chunk_id);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.chunk_id = htobe64(chunk_id);
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_ROTATE_PENDING, (void *) &msg,
+ sizeof(msg), 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.generic.ret_code = be32toh(reply.generic.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.generic.ret_code != LTTNG_OK) {
+ ret = -reply.generic.ret_code;
+ ERR("Relayd rotate pending replied with error %d", ret);
+ goto error;
+ } else {
+ /* No error, just rotate pending state */
+ if (reply.is_pending == 0 || reply.is_pending == 1) {
+ ret = reply.is_pending;
+ DBG("Relayd rotate pending command completed successfully with result \"%s\"",
+ ret ? "rotation pending" : "rotation NOT pending");
+ } else {
+ ret = -LTTNG_ERR_UNK;
+ }
+ }
+
+error:
+ return ret;
+}
+
+int relayd_mkdir(struct lttcomm_relayd_sock *rsock, const char *path)
+{
+ int ret;
+ struct lttcomm_relayd_mkdir *msg;
+ struct lttcomm_relayd_generic_reply reply;
+ size_t len;
+
+ /* Code flow error. Safety net. */
+ assert(rsock);
+
+ DBG("Relayd mkdir path %s", path);
+
+ len = strlen(path) + 1;
+ msg = zmalloc(sizeof(msg->length) + len);
+ if (!msg) {
+ PERROR("Alloc mkdir msg");
+ ret = -1;
+ goto error;
+ }
+ msg->length = htobe32((uint32_t) len);
+
+ if (lttng_strncpy(msg->path, path, len)) {
+ ret = -1;
+ goto error;
+ }
+
+ /* Send command */
+ ret = send_command(rsock, RELAYD_MKDIR, (void *) msg,
+ sizeof(msg->length) + len, 0);
+ if (ret < 0) {
+ goto error;
+ }
+
+ /* Receive response */
+ ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error;
+ }
+
+ reply.ret_code = be32toh(reply.ret_code);
+
+ /* Return session id or negative ret code. */
+ if (reply.ret_code != LTTNG_OK) {
+ ret = -1;
+ ERR("Relayd mkdir replied error %d", reply.ret_code);
+ } else {
+ /* Success */
+ ret = 0;
+ }
+
+ DBG("Relayd mkdir completed successfully");
+
+error:
+ free(msg);
+ return ret;
+}