X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Frelayd%2Frelayd.c;h=90312b5896f829c5d4c85be4fa7c1b4409d463d4;hb=HEAD;hp=ed788b993ffed5e27535e92b3e03323ef05a396b;hpb=96b0ecff3ade3c7970d1cc5fb12a50a94c67ee67;p=lttng-tools.git diff --git a/src/common/relayd/relayd.c b/src/common/relayd/relayd.c deleted file mode 100644 index ed788b993..000000000 --- a/src/common/relayd/relayd.c +++ /dev/null @@ -1,1189 +0,0 @@ -/* - * Copyright (C) 2012 - David Goulet - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License, version 2 only, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#define _LGPL_SOURCE -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "relayd.h" - -/* - * Send command. Fill up the header and append the data. - */ -static int send_command(struct lttcomm_relayd_sock *rsock, - enum lttcomm_relayd_command cmd, const void *data, size_t size, - int flags) -{ - int ret; - struct lttcomm_relayd_hdr header; - char *buf; - uint64_t buf_size = sizeof(header); - - if (rsock->sock.fd < 0) { - return -ECONNRESET; - } - - if (data) { - buf_size += size; - } - - buf = zmalloc(buf_size); - if (buf == NULL) { - PERROR("zmalloc relayd send command buf"); - ret = -1; - goto alloc_error; - } - - memset(&header, 0, sizeof(header)); - header.cmd = htobe32(cmd); - header.data_size = htobe64(size); - - /* Zeroed for now since not used. */ - header.cmd_version = 0; - header.circuit_id = 0; - - /* Prepare buffer to send. */ - memcpy(buf, &header, sizeof(header)); - if (data) { - 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; - } -error: - free(buf); -alloc_error: - return ret; -} - -/* - * Receive reply data on socket. This MUST be call after send_command or else - * could result in unexpected behavior(s). - */ -static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) -{ - int ret; - - if (rsock->sock.fd < 0) { - return -ECONNRESET; - } - - DBG3("Relayd waiting for reply of size %zu", size); - - ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); - if (ret <= 0 || ret != size) { - if (ret == 0) { - /* Orderly shutdown. */ - DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); - } else { - DBG("Receiving reply failed on sock %d for size %zu with ret %d", - rsock->sock.fd, size, ret); - } - /* Always return -1 here and the caller can use errno. */ - ret = -1; - goto error; - } - -error: - return ret; -} - -/* - * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname) - * have no length restriction on the sender side. - * Length for both payloads is stored in the msg struct. A new dynamic size - * payload size is introduced. - */ -static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock, - const char *session_name, const char *hostname, - int session_live_timer, unsigned int snapshot, - uint64_t sessiond_session_id, const lttng_uuid sessiond_uuid) -{ - int ret; - struct lttcomm_relayd_create_session_2_11 *msg = NULL; - size_t session_name_len; - size_t hostname_len; - size_t msg_length; - - /* The two names are sent with a '\0' delimiter between them. */ - session_name_len = strlen(session_name) + 1; - hostname_len = strlen(hostname) + 1; - - msg_length = sizeof(*msg) + session_name_len + hostname_len; - msg = zmalloc(msg_length); - if (!msg) { - PERROR("zmalloc create_session_2_11 command message"); - ret = -1; - goto error; - } - - assert(session_name_len <= UINT32_MAX); - msg->session_name_len = htobe32(session_name_len); - - assert(hostname_len <= UINT32_MAX); - msg->hostname_len = htobe32(hostname_len); - - if (lttng_strncpy(msg->names, session_name, session_name_len)) { - ret = -1; - goto error; - } - if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) { - ret = -1; - goto error; - } - - msg->live_timer = htobe32(session_live_timer); - msg->snapshot = !!snapshot; - - lttng_uuid_copy(msg->sessiond_uuid, sessiond_uuid); - msg->session_id = htobe64(sessiond_session_id); - - /* Send command */ - ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); - if (ret < 0) { - goto error; - } -error: - free(msg); - return ret; -} -/* - * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to - * support the live reading capability. - */ -static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, - const char *session_name, const char *hostname, - int session_live_timer, unsigned int snapshot) -{ - int ret; - struct lttcomm_relayd_create_session_2_4 msg; - - if (lttng_strncpy(msg.session_name, session_name, - sizeof(msg.session_name))) { - ret = -1; - goto error; - } - if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { - ret = -1; - goto error; - } - msg.live_timer = htobe32(session_live_timer); - msg.snapshot = htobe32(snapshot); - - /* Send command */ - ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); - if (ret < 0) { - goto error; - } - -error: - return ret; -} - -/* - * RELAYD_CREATE_SESSION from 2.1 to 2.3. - */ -static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) -{ - int ret; - - /* Send command */ - ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); - if (ret < 0) { - goto error; - } - -error: - return ret; -} - -/* - * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and - * set session_id of the relayd if we have a successful reply from the relayd. - * - * On success, return 0 else a negative value which is either an errno error or - * a lttng error code from the relayd. - */ -int relayd_create_session(struct lttcomm_relayd_sock *rsock, - uint64_t *relayd_session_id, - const char *session_name, const char *hostname, - int session_live_timer, - unsigned int snapshot, uint64_t sessiond_session_id, - const lttng_uuid sessiond_uuid) -{ - int ret; - struct lttcomm_relayd_status_session reply; - - assert(rsock); - assert(relayd_session_id); - - DBG("Relayd create session"); - - if (rsock->minor < 4) { - /* From 2.1 to 2.3 */ - ret = relayd_create_session_2_1(rsock); - } else if (rsock->minor >= 4 && rsock->minor < 11) { - /* From 2.4 to 2.10 */ - ret = relayd_create_session_2_4(rsock, session_name, - hostname, session_live_timer, snapshot); - } else { - /* From 2.11 to ... */ - ret = relayd_create_session_2_11(rsock, session_name, - hostname, session_live_timer, snapshot, - sessiond_session_id, sessiond_uuid); - } - - if (ret < 0) { - goto error; - } - - /* Receive response */ - ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); - if (ret < 0) { - goto error; - } - - reply.session_id = be64toh(reply.session_id); - reply.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd create session replied error %d", reply.ret_code); - goto error; - } else { - ret = 0; - *relayd_session_id = reply.session_id; - } - - DBG("Relayd session created with id %" PRIu64, reply.session_id); - -error: - return ret; -} - -static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, - const char *channel_name, const char *pathname) -{ - int ret; - struct lttcomm_relayd_add_stream msg; - - memset(&msg, 0, sizeof(msg)); - if (lttng_strncpy(msg.channel_name, channel_name, - sizeof(msg.channel_name))) { - ret = -1; - goto error; - } - - if (lttng_strncpy(msg.pathname, pathname, - sizeof(msg.pathname))) { - ret = -1; - goto error; - } - - /* Send command */ - ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); - if (ret < 0) { - ret = -1; - goto error; - } - ret = 0; -error: - return ret; -} - -static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, - const char *channel_name, const char *pathname, - uint64_t tracefile_size, uint64_t tracefile_count) -{ - int ret; - struct lttcomm_relayd_add_stream_2_2 msg; - - memset(&msg, 0, sizeof(msg)); - /* Compat with relayd 2.2 to 2.10 */ - if (lttng_strncpy(msg.channel_name, channel_name, - sizeof(msg.channel_name))) { - ret = -1; - goto error; - } - if (lttng_strncpy(msg.pathname, pathname, - sizeof(msg.pathname))) { - ret = -1; - goto error; - } - msg.tracefile_size = htobe64(tracefile_size); - msg.tracefile_count = htobe64(tracefile_count); - - /* Send command */ - ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); - if (ret < 0) { - goto error; - } - ret = 0; -error: - return ret; -} - -static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, - const char *channel_name, const char *pathname, - uint64_t tracefile_size, uint64_t tracefile_count, - uint64_t trace_archive_id) -{ - int ret; - struct lttcomm_relayd_add_stream_2_11 *msg = NULL; - size_t channel_name_len; - size_t pathname_len; - size_t msg_length; - - /* The two names are sent with a '\0' delimiter between them. */ - channel_name_len = strlen(channel_name) + 1; - pathname_len = strlen(pathname) + 1; - - msg_length = sizeof(*msg) + channel_name_len + pathname_len; - msg = zmalloc(msg_length); - if (!msg) { - PERROR("zmalloc add_stream_2_11 command message"); - ret = -1; - goto error; - } - - assert(channel_name_len <= UINT32_MAX); - msg->channel_name_len = htobe32(channel_name_len); - - assert(pathname_len <= UINT32_MAX); - msg->pathname_len = htobe32(pathname_len); - - if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { - ret = -1; - goto error; - } - if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { - ret = -1; - goto error; - } - - msg->tracefile_size = htobe64(tracefile_size); - msg->tracefile_count = htobe64(tracefile_count); - msg->trace_archive_id = htobe64(trace_archive_id); - - /* Send command */ - ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); - if (ret < 0) { - goto error; - } - ret = 0; -error: - free(msg); - return ret; -} - -/* - * Add stream on the relayd and assign stream handle to the stream_id argument. - * - * On success return 0 else return ret_code negative value. - */ -int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, - const char *pathname, uint64_t *stream_id, - uint64_t tracefile_size, uint64_t tracefile_count, - struct lttng_trace_chunk *trace_chunk) -{ - int ret; - struct lttcomm_relayd_status_stream reply; - - /* Code flow error. Safety net. */ - assert(rsock); - assert(channel_name); - assert(pathname); - - DBG("Relayd adding stream for channel name %s", channel_name); - - /* Compat with relayd 2.1 */ - if (rsock->minor == 1) { - /* For 2.1 */ - assert(!trace_chunk); - ret = relayd_add_stream_2_1(rsock, channel_name, pathname); - - } else if (rsock->minor > 1 && rsock->minor < 11) { - /* From 2.2 to 2.10 */ - assert(!trace_chunk); - ret = relayd_add_stream_2_2(rsock, channel_name, pathname, - tracefile_size, tracefile_count); - } else { - enum lttng_trace_chunk_status chunk_status; - uint64_t chunk_id; - - assert(trace_chunk); - chunk_status = lttng_trace_chunk_get_id(trace_chunk, - &chunk_id); - assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); - - /* From 2.11 to ...*/ - ret = relayd_add_stream_2_11(rsock, channel_name, pathname, - tracefile_size, tracefile_count, - chunk_id); - } - - if (ret) { - ret = -1; - goto error; - } - - /* Waiting for reply */ - ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); - if (ret < 0) { - goto error; - } - - /* Back to host bytes order. */ - reply.handle = be64toh(reply.handle); - reply.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd add stream replied error %d", reply.ret_code); - } else { - /* Success */ - ret = 0; - *stream_id = reply.handle; - } - - DBG("Relayd stream added successfully with handle %" PRIu64, - reply.handle); - -error: - return ret; -} - -/* - * Inform the relay that all the streams for the current channel has been sent. - * - * On success return 0 else return ret_code negative value. - */ -int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) -{ - int ret; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd sending streams sent."); - - /* This feature was introduced in 2.4, ignore it for earlier versions. */ - if (rsock->minor < 4) { - ret = 0; - goto end; - } - - /* Send command */ - ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); - if (ret < 0) { - goto error; - } - - /* Waiting for reply */ - ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); - if (ret < 0) { - goto error; - } - - /* Back to host bytes order. */ - reply.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd streams sent replied error %d", reply.ret_code); - goto error; - } else { - /* Success */ - ret = 0; - } - - DBG("Relayd streams sent success"); - -error: -end: - return ret; -} - -/* - * Check version numbers on the relayd. - * 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 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) -{ - int ret; - struct lttcomm_relayd_version msg; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd version check for major.minor %u.%u", rsock->major, - rsock->minor); - - memset(&msg, 0, sizeof(msg)); - /* Prepare network byte order before transmission. */ - msg.major = htobe32(rsock->major); - msg.minor = htobe32(rsock->minor); - - /* Send command */ - ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); - if (ret < 0) { - goto error; - } - - /* Receive response */ - ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); - if (ret < 0) { - goto error; - } - - /* Set back to host bytes order */ - msg.major = be32toh(msg.major); - msg.minor = be32toh(msg.minor); - - /* - * Only validate the major version. If the other side is higher, - * communication is not possible. Only major version equal can talk to each - * other. If the minor version differs, the lowest version is used by both - * sides. - */ - if (msg.major != rsock->major) { - /* Not compatible */ - ret = LTTNG_ERR_RELAYD_VERSION_FAIL; - DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", - msg.major, rsock->major); - goto error; - } - - /* - * If the relayd's minor version is higher, it will adapt to our version so - * we can continue to use the latest relayd communication data structure. - * If the received minor version is higher, the relayd should adapt to us. - */ - if (rsock->minor > msg.minor) { - rsock->minor = msg.minor; - } - - /* Version number compatible */ - DBG2("Relayd version is compatible, using protocol version %u.%u", - rsock->major, rsock->minor); - ret = 0; - -error: - return ret; -} - -/* - * Add stream on the relayd and assign stream handle to the stream_id argument. - * - * On success return 0 else return ret_code negative value. - */ -int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) -{ - int ret; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd sending metadata of size %zu", len); - - /* Send command */ - ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); - if (ret < 0) { - goto error; - } - - DBG2("Relayd metadata added successfully"); - - /* - * After that call, the metadata data MUST be sent to the relayd so the - * receive size on the other end matches the len of the metadata packet - * header. This is why we don't wait for a reply here. - */ - -error: - return ret; -} - -/* - * Connect to relay daemon with an allocated lttcomm_relayd_sock. - */ -int relayd_connect(struct lttcomm_relayd_sock *rsock) -{ - /* Code flow error. Safety net. */ - assert(rsock); - - if (!rsock->sock.ops) { - /* - * Attempting a connect on a non-initialized socket. - */ - return -ECONNRESET; - } - - DBG3("Relayd connect ..."); - - return rsock->sock.ops->connect(&rsock->sock); -} - -/* - * Close relayd socket with an allocated lttcomm_relayd_sock. - * - * If no socket operations are found, simply return 0 meaning that everything - * is fine. Without operations, the socket can not possibly be opened or used. - * This is possible if the socket was allocated but not created. However, the - * caller could simply use it to store a valid file descriptor for instance - * passed over a Unix socket and call this to cleanup but still without a valid - * ops pointer. - * - * Return the close returned value. On error, a negative value is usually - * returned back from close(2). - */ -int relayd_close(struct lttcomm_relayd_sock *rsock) -{ - int ret; - - /* Code flow error. Safety net. */ - assert(rsock); - - /* An invalid fd is fine, return success. */ - if (rsock->sock.fd < 0) { - ret = 0; - goto end; - } - - DBG3("Relayd closing socket %d", rsock->sock.fd); - - if (rsock->sock.ops) { - ret = rsock->sock.ops->close(&rsock->sock); - } else { - /* Default call if no specific ops found. */ - ret = close(rsock->sock.fd); - if (ret < 0) { - PERROR("relayd_close default close"); - } - } - rsock->sock.fd = -1; - -end: - return ret; -} - -/* - * Send data header structure to the relayd. - */ -int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, - struct lttcomm_relayd_data_hdr *hdr, size_t size) -{ - int ret; - - /* Code flow error. Safety net. */ - assert(rsock); - assert(hdr); - - if (rsock->sock.fd < 0) { - return -ECONNRESET; - } - - DBG3("Relayd sending data header of size %zu", size); - - /* Again, safety net */ - if (size == 0) { - size = sizeof(struct lttcomm_relayd_data_hdr); - } - - /* Only send data header. */ - ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); - if (ret < 0) { - ret = -errno; - goto error; - } - - /* - * The data MUST be sent right after that command for the receive on the - * other end to match the size in the header. - */ - -error: - return ret; -} - -/* - * Send close stream command to the relayd. - */ -int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, - uint64_t last_net_seq_num) -{ - int ret; - struct lttcomm_relayd_close_stream msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd closing stream id %" PRIu64, stream_id); - - memset(&msg, 0, sizeof(msg)); - msg.stream_id = htobe64(stream_id); - msg.last_net_seq_num = htobe64(last_net_seq_num); - - /* Send command */ - ret = send_command(rsock, RELAYD_CLOSE_STREAM, (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.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd close stream replied error %d", reply.ret_code); - } else { - /* Success */ - ret = 0; - } - - DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); - -error: - return ret; -} - -/* - * Check for data availability for a given stream id. - * - * Return 0 if NOT pending, 1 if so and a negative value on error. - */ -int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, - uint64_t last_net_seq_num) -{ - int ret; - struct lttcomm_relayd_data_pending msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd data pending for stream id %" PRIu64, stream_id); - - memset(&msg, 0, sizeof(msg)); - msg.stream_id = htobe64(stream_id); - msg.last_net_seq_num = htobe64(last_net_seq_num); - - /* Send command */ - ret = send_command(rsock, RELAYD_DATA_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.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code >= LTTNG_OK) { - ERR("Relayd data pending replied error %d", reply.ret_code); - } - - /* At this point, the ret code is either 1 or 0 */ - ret = reply.ret_code; - - DBG("Relayd data is %s pending for stream id %" PRIu64, - ret == 1 ? "" : "NOT", stream_id); - -error: - return ret; -} - -/* - * Check on the relayd side for a quiescent state on the control socket. - */ -int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, - uint64_t metadata_stream_id) -{ - int ret; - struct lttcomm_relayd_quiescent_control msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd checking quiescent control state"); - - memset(&msg, 0, sizeof(msg)); - msg.stream_id = htobe64(metadata_stream_id); - - /* Send command */ - ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &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.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd quiescent control replied error %d", reply.ret_code); - goto error; - } - - /* Control socket is quiescent */ - return 0; - -error: - return ret; -} - -/* - * Begin a data pending command for a specific session id. - */ -int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) -{ - int ret; - struct lttcomm_relayd_begin_data_pending msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd begin data pending"); - - memset(&msg, 0, sizeof(msg)); - msg.session_id = htobe64(id); - - /* Send command */ - ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &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.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd begin data pending replied error %d", reply.ret_code); - goto error; - } - - return 0; - -error: - return ret; -} - -/* - * End a data pending command for a specific session id. - * - * Return 0 on success and set is_data_inflight to 0 if no data is being - * streamed or 1 if it is the case. - */ -int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, - unsigned int *is_data_inflight) -{ - int ret, recv_ret; - struct lttcomm_relayd_end_data_pending msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Relayd end data pending"); - - memset(&msg, 0, sizeof(msg)); - msg.session_id = htobe64(id); - - /* Send command */ - ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); - if (ret < 0) { - goto error; - } - - /* Receive response */ - ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); - if (ret < 0) { - goto error; - } - - recv_ret = be32toh(reply.ret_code); - if (recv_ret < 0) { - ret = recv_ret; - goto error; - } - - *is_data_inflight = recv_ret; - - DBG("Relayd end data pending is data inflight: %d", recv_ret); - - return 0; - -error: - return ret; -} - -/* - * Send index to the relayd. - */ -int relayd_send_index(struct lttcomm_relayd_sock *rsock, - struct ctf_packet_index *index, uint64_t relay_stream_id, - uint64_t net_seq_num) -{ - int ret; - struct lttcomm_relayd_index msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - if (rsock->minor < 4) { - DBG("Not sending indexes before protocol 2.4"); - ret = 0; - goto error; - } - - DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); - - memset(&msg, 0, sizeof(msg)); - msg.relay_stream_id = htobe64(relay_stream_id); - msg.net_seq_num = htobe64(net_seq_num); - - /* The index is already in big endian. */ - msg.packet_size = index->packet_size; - msg.content_size = index->content_size; - msg.timestamp_begin = index->timestamp_begin; - msg.timestamp_end = index->timestamp_end; - msg.events_discarded = index->events_discarded; - msg.stream_id = index->stream_id; - - if (rsock->minor >= 8) { - msg.stream_instance_id = index->stream_instance_id; - msg.packet_seq_num = index->packet_seq_num; - } - - /* Send command */ - ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, - lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, - rsock->minor), - lttng_to_index_minor(rsock->major, rsock->minor)), - 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 send index replied error %d", reply.ret_code); - } else { - /* Success */ - ret = 0; - } - -error: - return ret; -} - -/* - * Ask the relay to reset the metadata trace file (regeneration). - */ -int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, - uint64_t stream_id, uint64_t version) -{ - int ret; - struct lttcomm_relayd_reset_metadata msg; - struct lttcomm_relayd_generic_reply reply; - - /* Code flow error. Safety net. */ - assert(rsock); - - /* Should have been prevented by the sessiond. */ - if (rsock->minor < 8) { - ERR("Metadata regeneration unsupported before 2.8"); - ret = -1; - goto error; - } - - DBG("Relayd reset metadata stream id %" PRIu64, stream_id); - - memset(&msg, 0, sizeof(msg)); - msg.stream_id = htobe64(stream_id); - msg.version = htobe64(version); - - /* Send command */ - ret = send_command(rsock, RELAYD_RESET_METADATA, (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.ret_code = be32toh(reply.ret_code); - - /* Return session id or negative ret code. */ - if (reply.ret_code != LTTNG_OK) { - ret = -1; - ERR("Relayd reset metadata replied error %d", reply.ret_code); - } else { - /* Success */ - ret = 0; - } - - DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); - -error: - return ret; -} - -int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, - 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; - /* FIXME */ - char *new_pathname = NULL; - - /* Code flow error. Safety net. */ - assert(rsock); - - DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id); - - /* Account for the trailing NULL. */ - len = lttng_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; -}