2 * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License, version 2 only, as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc., 51
15 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include <common/common.h>
27 #include <common/defaults.h>
28 #include <common/compat/endian.h>
29 #include <common/compat/string.h>
30 #include <common/sessiond-comm/relayd.h>
31 #include <common/index/ctf-index.h>
36 * Send command. Fill up the header and append the data.
38 static int send_command(struct lttcomm_relayd_sock
*rsock
,
39 enum lttcomm_relayd_command cmd
, const void *data
, size_t size
,
43 struct lttcomm_relayd_hdr header
;
45 uint64_t buf_size
= sizeof(header
);
47 if (rsock
->sock
.fd
< 0) {
55 buf
= zmalloc(buf_size
);
57 PERROR("zmalloc relayd send command buf");
62 memset(&header
, 0, sizeof(header
));
63 header
.cmd
= htobe32(cmd
);
64 header
.data_size
= htobe64(size
);
66 /* Zeroed for now since not used. */
67 header
.cmd_version
= 0;
68 header
.circuit_id
= 0;
70 /* Prepare buffer to send. */
71 memcpy(buf
, &header
, sizeof(header
));
73 memcpy(buf
+ sizeof(header
), data
, size
);
76 DBG3("Relayd sending command %d of size %" PRIu64
, (int) cmd
, buf_size
);
77 ret
= rsock
->sock
.ops
->sendmsg(&rsock
->sock
, buf
, buf_size
, flags
);
79 PERROR("Failed to send command %d of size %" PRIu64
,
91 * Receive reply data on socket. This MUST be call after send_command or else
92 * could result in unexpected behavior(s).
94 static int recv_reply(struct lttcomm_relayd_sock
*rsock
, void *data
, size_t size
)
98 if (rsock
->sock
.fd
< 0) {
102 DBG3("Relayd waiting for reply of size %zu", size
);
104 ret
= rsock
->sock
.ops
->recvmsg(&rsock
->sock
, data
, size
, 0);
105 if (ret
<= 0 || ret
!= size
) {
107 /* Orderly shutdown. */
108 DBG("Socket %d has performed an orderly shutdown", rsock
->sock
.fd
);
110 DBG("Receiving reply failed on sock %d for size %zu with ret %d",
111 rsock
->sock
.fd
, size
, ret
);
113 /* Always return -1 here and the caller can use errno. */
123 * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname)
124 * have no length restriction on the sender side.
125 * Length for both payloads is stored in the msg struct. A new dynamic size
126 * payload size is introduced.
128 static int relayd_create_session_2_11(struct lttcomm_relayd_sock
*rsock
,
129 const char *session_name
, const char *hostname
,
130 int session_live_timer
, unsigned int snapshot
,
131 uint64_t sessiond_session_id
, const lttng_uuid sessiond_uuid
)
134 struct lttcomm_relayd_create_session_2_11
*msg
= NULL
;
135 size_t session_name_len
;
139 /* The two names are sent with a '\0' delimiter between them. */
140 session_name_len
= strlen(session_name
) + 1;
141 hostname_len
= strlen(hostname
) + 1;
143 msg_length
= sizeof(*msg
) + session_name_len
+ hostname_len
;
144 msg
= zmalloc(msg_length
);
146 PERROR("zmalloc create_session_2_11 command message");
151 assert(session_name_len
<= UINT32_MAX
);
152 msg
->session_name_len
= htobe32(session_name_len
);
154 assert(hostname_len
<= UINT32_MAX
);
155 msg
->hostname_len
= htobe32(hostname_len
);
157 if (lttng_strncpy(msg
->names
, session_name
, session_name_len
)) {
161 if (lttng_strncpy(msg
->names
+ session_name_len
, hostname
, hostname_len
)) {
166 msg
->live_timer
= htobe32(session_live_timer
);
167 msg
->snapshot
= !!snapshot
;
169 lttng_uuid_copy(msg
->sessiond_uuid
, sessiond_uuid
);
170 msg
->session_id
= htobe64(sessiond_session_id
);
173 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, msg
, msg_length
, 0);
182 * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to
183 * support the live reading capability.
185 static int relayd_create_session_2_4(struct lttcomm_relayd_sock
*rsock
,
186 const char *session_name
, const char *hostname
,
187 int session_live_timer
, unsigned int snapshot
)
190 struct lttcomm_relayd_create_session_2_4 msg
;
192 if (lttng_strncpy(msg
.session_name
, session_name
,
193 sizeof(msg
.session_name
))) {
197 if (lttng_strncpy(msg
.hostname
, hostname
, sizeof(msg
.hostname
))) {
201 msg
.live_timer
= htobe32(session_live_timer
);
202 msg
.snapshot
= htobe32(snapshot
);
205 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, &msg
, sizeof(msg
), 0);
215 * RELAYD_CREATE_SESSION from 2.1 to 2.3.
217 static int relayd_create_session_2_1(struct lttcomm_relayd_sock
*rsock
)
222 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, NULL
, 0, 0);
232 * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and
233 * set session_id of the relayd if we have a successful reply from the relayd.
235 * On success, return 0 else a negative value which is either an errno error or
236 * a lttng error code from the relayd.
238 int relayd_create_session(struct lttcomm_relayd_sock
*rsock
,
239 uint64_t *relayd_session_id
,
240 const char *session_name
, const char *hostname
,
241 int session_live_timer
,
242 unsigned int snapshot
, uint64_t sessiond_session_id
,
243 const lttng_uuid sessiond_uuid
)
246 struct lttcomm_relayd_status_session reply
;
249 assert(relayd_session_id
);
251 DBG("Relayd create session");
253 if (rsock
->minor
< 4) {
254 /* From 2.1 to 2.3 */
255 ret
= relayd_create_session_2_1(rsock
);
256 } else if (rsock
->minor
>= 4 && rsock
->minor
< 11) {
257 /* From 2.4 to 2.10 */
258 ret
= relayd_create_session_2_4(rsock
, session_name
,
259 hostname
, session_live_timer
, snapshot
);
261 /* From 2.11 to ... */
262 ret
= relayd_create_session_2_11(rsock
, session_name
,
263 hostname
, session_live_timer
, snapshot
,
264 sessiond_session_id
, sessiond_uuid
);
271 /* Receive response */
272 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
277 reply
.session_id
= be64toh(reply
.session_id
);
278 reply
.ret_code
= be32toh(reply
.ret_code
);
280 /* Return session id or negative ret code. */
281 if (reply
.ret_code
!= LTTNG_OK
) {
283 ERR("Relayd create session replied error %d", reply
.ret_code
);
287 *relayd_session_id
= reply
.session_id
;
290 DBG("Relayd session created with id %" PRIu64
, reply
.session_id
);
296 static int relayd_add_stream_2_1(struct lttcomm_relayd_sock
*rsock
,
297 const char *channel_name
, const char *pathname
)
300 struct lttcomm_relayd_add_stream msg
;
302 memset(&msg
, 0, sizeof(msg
));
303 if (lttng_strncpy(msg
.channel_name
, channel_name
,
304 sizeof(msg
.channel_name
))) {
309 if (lttng_strncpy(msg
.pathname
, pathname
,
310 sizeof(msg
.pathname
))) {
316 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) &msg
, sizeof(msg
), 0);
326 static int relayd_add_stream_2_2(struct lttcomm_relayd_sock
*rsock
,
327 const char *channel_name
, const char *pathname
,
328 uint64_t tracefile_size
, uint64_t tracefile_count
)
331 struct lttcomm_relayd_add_stream_2_2 msg
;
333 memset(&msg
, 0, sizeof(msg
));
334 /* Compat with relayd 2.2 to 2.10 */
335 if (lttng_strncpy(msg
.channel_name
, channel_name
,
336 sizeof(msg
.channel_name
))) {
340 if (lttng_strncpy(msg
.pathname
, pathname
,
341 sizeof(msg
.pathname
))) {
345 msg
.tracefile_size
= htobe64(tracefile_size
);
346 msg
.tracefile_count
= htobe64(tracefile_count
);
349 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) &msg
, sizeof(msg
), 0);
358 static int relayd_add_stream_2_11(struct lttcomm_relayd_sock
*rsock
,
359 const char *channel_name
, const char *pathname
,
360 uint64_t tracefile_size
, uint64_t tracefile_count
,
361 uint64_t trace_archive_id
)
364 struct lttcomm_relayd_add_stream_2_11
*msg
= NULL
;
365 size_t channel_name_len
;
369 /* The two names are sent with a '\0' delimiter between them. */
370 channel_name_len
= strlen(channel_name
) + 1;
371 pathname_len
= strlen(pathname
) + 1;
373 msg_length
= sizeof(*msg
) + channel_name_len
+ pathname_len
;
374 msg
= zmalloc(msg_length
);
376 PERROR("zmalloc add_stream_2_11 command message");
381 assert(channel_name_len
<= UINT32_MAX
);
382 msg
->channel_name_len
= htobe32(channel_name_len
);
384 assert(pathname_len
<= UINT32_MAX
);
385 msg
->pathname_len
= htobe32(pathname_len
);
387 if (lttng_strncpy(msg
->names
, channel_name
, channel_name_len
)) {
391 if (lttng_strncpy(msg
->names
+ channel_name_len
, pathname
, pathname_len
)) {
396 msg
->tracefile_size
= htobe64(tracefile_size
);
397 msg
->tracefile_count
= htobe64(tracefile_count
);
398 msg
->trace_archive_id
= htobe64(trace_archive_id
);
401 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) msg
, msg_length
, 0);
412 * Add stream on the relayd and assign stream handle to the stream_id argument.
414 * On success return 0 else return ret_code negative value.
416 int relayd_add_stream(struct lttcomm_relayd_sock
*rsock
, const char *channel_name
,
417 const char *pathname
, uint64_t *stream_id
,
418 uint64_t tracefile_size
, uint64_t tracefile_count
,
419 uint64_t trace_archive_id
)
422 struct lttcomm_relayd_status_stream reply
;
424 /* Code flow error. Safety net. */
426 assert(channel_name
);
429 DBG("Relayd adding stream for channel name %s", channel_name
);
431 /* Compat with relayd 2.1 */
432 if (rsock
->minor
== 1) {
434 ret
= relayd_add_stream_2_1(rsock
, channel_name
, pathname
);
436 } else if (rsock
->minor
> 1 && rsock
->minor
< 11) {
437 /* From 2.2 to 2.10 */
438 ret
= relayd_add_stream_2_2(rsock
, channel_name
, pathname
,
439 tracefile_size
, tracefile_count
);
441 /* From 2.11 to ...*/
442 ret
= relayd_add_stream_2_11(rsock
, channel_name
, pathname
,
443 tracefile_size
, tracefile_count
,
452 /* Waiting for reply */
453 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
458 /* Back to host bytes order. */
459 reply
.handle
= be64toh(reply
.handle
);
460 reply
.ret_code
= be32toh(reply
.ret_code
);
462 /* Return session id or negative ret code. */
463 if (reply
.ret_code
!= LTTNG_OK
) {
465 ERR("Relayd add stream replied error %d", reply
.ret_code
);
469 *stream_id
= reply
.handle
;
472 DBG("Relayd stream added successfully with handle %" PRIu64
,
480 * Inform the relay that all the streams for the current channel has been sent.
482 * On success return 0 else return ret_code negative value.
484 int relayd_streams_sent(struct lttcomm_relayd_sock
*rsock
)
487 struct lttcomm_relayd_generic_reply reply
;
489 /* Code flow error. Safety net. */
492 DBG("Relayd sending streams sent.");
494 /* This feature was introduced in 2.4, ignore it for earlier versions. */
495 if (rsock
->minor
< 4) {
501 ret
= send_command(rsock
, RELAYD_STREAMS_SENT
, NULL
, 0, 0);
506 /* Waiting for reply */
507 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
512 /* Back to host bytes order. */
513 reply
.ret_code
= be32toh(reply
.ret_code
);
515 /* Return session id or negative ret code. */
516 if (reply
.ret_code
!= LTTNG_OK
) {
518 ERR("Relayd streams sent replied error %d", reply
.ret_code
);
525 DBG("Relayd streams sent success");
533 * Check version numbers on the relayd.
534 * If major versions are compatible, we assign minor_to_use to the
535 * minor version of the procotol we are going to use for this session.
537 * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL
538 * otherwise, or a negative value on network errors.
540 int relayd_version_check(struct lttcomm_relayd_sock
*rsock
)
543 struct lttcomm_relayd_version msg
;
545 /* Code flow error. Safety net. */
548 DBG("Relayd version check for major.minor %u.%u", rsock
->major
,
551 memset(&msg
, 0, sizeof(msg
));
552 /* Prepare network byte order before transmission. */
553 msg
.major
= htobe32(rsock
->major
);
554 msg
.minor
= htobe32(rsock
->minor
);
557 ret
= send_command(rsock
, RELAYD_VERSION
, (void *) &msg
, sizeof(msg
), 0);
562 /* Receive response */
563 ret
= recv_reply(rsock
, (void *) &msg
, sizeof(msg
));
568 /* Set back to host bytes order */
569 msg
.major
= be32toh(msg
.major
);
570 msg
.minor
= be32toh(msg
.minor
);
573 * Only validate the major version. If the other side is higher,
574 * communication is not possible. Only major version equal can talk to each
575 * other. If the minor version differs, the lowest version is used by both
578 if (msg
.major
!= rsock
->major
) {
580 ret
= LTTNG_ERR_RELAYD_VERSION_FAIL
;
581 DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)",
582 msg
.major
, rsock
->major
);
587 * If the relayd's minor version is higher, it will adapt to our version so
588 * we can continue to use the latest relayd communication data structure.
589 * If the received minor version is higher, the relayd should adapt to us.
591 if (rsock
->minor
> msg
.minor
) {
592 rsock
->minor
= msg
.minor
;
595 /* Version number compatible */
596 DBG2("Relayd version is compatible, using protocol version %u.%u",
597 rsock
->major
, rsock
->minor
);
605 * Add stream on the relayd and assign stream handle to the stream_id argument.
607 * On success return 0 else return ret_code negative value.
609 int relayd_send_metadata(struct lttcomm_relayd_sock
*rsock
, size_t len
)
613 /* Code flow error. Safety net. */
616 DBG("Relayd sending metadata of size %zu", len
);
619 ret
= send_command(rsock
, RELAYD_SEND_METADATA
, NULL
, len
, 0);
624 DBG2("Relayd metadata added successfully");
627 * After that call, the metadata data MUST be sent to the relayd so the
628 * receive size on the other end matches the len of the metadata packet
629 * header. This is why we don't wait for a reply here.
637 * Connect to relay daemon with an allocated lttcomm_relayd_sock.
639 int relayd_connect(struct lttcomm_relayd_sock
*rsock
)
641 /* Code flow error. Safety net. */
644 if (!rsock
->sock
.ops
) {
646 * Attempting a connect on a non-initialized socket.
651 DBG3("Relayd connect ...");
653 return rsock
->sock
.ops
->connect(&rsock
->sock
);
657 * Close relayd socket with an allocated lttcomm_relayd_sock.
659 * If no socket operations are found, simply return 0 meaning that everything
660 * is fine. Without operations, the socket can not possibly be opened or used.
661 * This is possible if the socket was allocated but not created. However, the
662 * caller could simply use it to store a valid file descriptor for instance
663 * passed over a Unix socket and call this to cleanup but still without a valid
666 * Return the close returned value. On error, a negative value is usually
667 * returned back from close(2).
669 int relayd_close(struct lttcomm_relayd_sock
*rsock
)
673 /* Code flow error. Safety net. */
676 /* An invalid fd is fine, return success. */
677 if (rsock
->sock
.fd
< 0) {
682 DBG3("Relayd closing socket %d", rsock
->sock
.fd
);
684 if (rsock
->sock
.ops
) {
685 ret
= rsock
->sock
.ops
->close(&rsock
->sock
);
687 /* Default call if no specific ops found. */
688 ret
= close(rsock
->sock
.fd
);
690 PERROR("relayd_close default close");
700 * Send data header structure to the relayd.
702 int relayd_send_data_hdr(struct lttcomm_relayd_sock
*rsock
,
703 struct lttcomm_relayd_data_hdr
*hdr
, size_t size
)
707 /* Code flow error. Safety net. */
711 if (rsock
->sock
.fd
< 0) {
715 DBG3("Relayd sending data header of size %zu", size
);
717 /* Again, safety net */
719 size
= sizeof(struct lttcomm_relayd_data_hdr
);
722 /* Only send data header. */
723 ret
= rsock
->sock
.ops
->sendmsg(&rsock
->sock
, hdr
, size
, 0);
730 * The data MUST be sent right after that command for the receive on the
731 * other end to match the size in the header.
739 * Send close stream command to the relayd.
741 int relayd_send_close_stream(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
742 uint64_t last_net_seq_num
)
745 struct lttcomm_relayd_close_stream msg
;
746 struct lttcomm_relayd_generic_reply reply
;
748 /* Code flow error. Safety net. */
751 DBG("Relayd closing stream id %" PRIu64
, stream_id
);
753 memset(&msg
, 0, sizeof(msg
));
754 msg
.stream_id
= htobe64(stream_id
);
755 msg
.last_net_seq_num
= htobe64(last_net_seq_num
);
758 ret
= send_command(rsock
, RELAYD_CLOSE_STREAM
, (void *) &msg
, sizeof(msg
), 0);
763 /* Receive response */
764 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
769 reply
.ret_code
= be32toh(reply
.ret_code
);
771 /* Return session id or negative ret code. */
772 if (reply
.ret_code
!= LTTNG_OK
) {
774 ERR("Relayd close stream replied error %d", reply
.ret_code
);
780 DBG("Relayd close stream id %" PRIu64
" successfully", stream_id
);
787 * Check for data availability for a given stream id.
789 * Return 0 if NOT pending, 1 if so and a negative value on error.
791 int relayd_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
792 uint64_t last_net_seq_num
)
795 struct lttcomm_relayd_data_pending msg
;
796 struct lttcomm_relayd_generic_reply reply
;
798 /* Code flow error. Safety net. */
801 DBG("Relayd data pending for stream id %" PRIu64
, stream_id
);
803 memset(&msg
, 0, sizeof(msg
));
804 msg
.stream_id
= htobe64(stream_id
);
805 msg
.last_net_seq_num
= htobe64(last_net_seq_num
);
808 ret
= send_command(rsock
, RELAYD_DATA_PENDING
, (void *) &msg
,
814 /* Receive response */
815 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
820 reply
.ret_code
= be32toh(reply
.ret_code
);
822 /* Return session id or negative ret code. */
823 if (reply
.ret_code
>= LTTNG_OK
) {
824 ERR("Relayd data pending replied error %d", reply
.ret_code
);
827 /* At this point, the ret code is either 1 or 0 */
828 ret
= reply
.ret_code
;
830 DBG("Relayd data is %s pending for stream id %" PRIu64
,
831 ret
== 1 ? "" : "NOT", stream_id
);
838 * Check on the relayd side for a quiescent state on the control socket.
840 int relayd_quiescent_control(struct lttcomm_relayd_sock
*rsock
,
841 uint64_t metadata_stream_id
)
844 struct lttcomm_relayd_quiescent_control msg
;
845 struct lttcomm_relayd_generic_reply reply
;
847 /* Code flow error. Safety net. */
850 DBG("Relayd checking quiescent control state");
852 memset(&msg
, 0, sizeof(msg
));
853 msg
.stream_id
= htobe64(metadata_stream_id
);
856 ret
= send_command(rsock
, RELAYD_QUIESCENT_CONTROL
, &msg
, sizeof(msg
), 0);
861 /* Receive response */
862 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
867 reply
.ret_code
= be32toh(reply
.ret_code
);
869 /* Return session id or negative ret code. */
870 if (reply
.ret_code
!= LTTNG_OK
) {
872 ERR("Relayd quiescent control replied error %d", reply
.ret_code
);
876 /* Control socket is quiescent */
884 * Begin a data pending command for a specific session id.
886 int relayd_begin_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t id
)
889 struct lttcomm_relayd_begin_data_pending msg
;
890 struct lttcomm_relayd_generic_reply reply
;
892 /* Code flow error. Safety net. */
895 DBG("Relayd begin data pending");
897 memset(&msg
, 0, sizeof(msg
));
898 msg
.session_id
= htobe64(id
);
901 ret
= send_command(rsock
, RELAYD_BEGIN_DATA_PENDING
, &msg
, sizeof(msg
), 0);
906 /* Receive response */
907 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
912 reply
.ret_code
= be32toh(reply
.ret_code
);
914 /* Return session id or negative ret code. */
915 if (reply
.ret_code
!= LTTNG_OK
) {
917 ERR("Relayd begin data pending replied error %d", reply
.ret_code
);
928 * End a data pending command for a specific session id.
930 * Return 0 on success and set is_data_inflight to 0 if no data is being
931 * streamed or 1 if it is the case.
933 int relayd_end_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t id
,
934 unsigned int *is_data_inflight
)
937 struct lttcomm_relayd_end_data_pending msg
;
938 struct lttcomm_relayd_generic_reply reply
;
940 /* Code flow error. Safety net. */
943 DBG("Relayd end data pending");
945 memset(&msg
, 0, sizeof(msg
));
946 msg
.session_id
= htobe64(id
);
949 ret
= send_command(rsock
, RELAYD_END_DATA_PENDING
, &msg
, sizeof(msg
), 0);
954 /* Receive response */
955 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
960 recv_ret
= be32toh(reply
.ret_code
);
966 *is_data_inflight
= recv_ret
;
968 DBG("Relayd end data pending is data inflight: %d", recv_ret
);
977 * Send index to the relayd.
979 int relayd_send_index(struct lttcomm_relayd_sock
*rsock
,
980 struct ctf_packet_index
*index
, uint64_t relay_stream_id
,
981 uint64_t net_seq_num
)
984 struct lttcomm_relayd_index msg
;
985 struct lttcomm_relayd_generic_reply reply
;
987 /* Code flow error. Safety net. */
990 if (rsock
->minor
< 4) {
991 DBG("Not sending indexes before protocol 2.4");
996 DBG("Relayd sending index for stream ID %" PRIu64
, relay_stream_id
);
998 memset(&msg
, 0, sizeof(msg
));
999 msg
.relay_stream_id
= htobe64(relay_stream_id
);
1000 msg
.net_seq_num
= htobe64(net_seq_num
);
1002 /* The index is already in big endian. */
1003 msg
.packet_size
= index
->packet_size
;
1004 msg
.content_size
= index
->content_size
;
1005 msg
.timestamp_begin
= index
->timestamp_begin
;
1006 msg
.timestamp_end
= index
->timestamp_end
;
1007 msg
.events_discarded
= index
->events_discarded
;
1008 msg
.stream_id
= index
->stream_id
;
1010 if (rsock
->minor
>= 8) {
1011 msg
.stream_instance_id
= index
->stream_instance_id
;
1012 msg
.packet_seq_num
= index
->packet_seq_num
;
1016 ret
= send_command(rsock
, RELAYD_SEND_INDEX
, &msg
,
1017 lttcomm_relayd_index_len(lttng_to_index_major(rsock
->major
,
1019 lttng_to_index_minor(rsock
->major
, rsock
->minor
)),
1025 /* Receive response */
1026 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1031 reply
.ret_code
= be32toh(reply
.ret_code
);
1033 /* Return session id or negative ret code. */
1034 if (reply
.ret_code
!= LTTNG_OK
) {
1036 ERR("Relayd send index replied error %d", reply
.ret_code
);
1047 * Ask the relay to reset the metadata trace file (regeneration).
1049 int relayd_reset_metadata(struct lttcomm_relayd_sock
*rsock
,
1050 uint64_t stream_id
, uint64_t version
)
1053 struct lttcomm_relayd_reset_metadata msg
;
1054 struct lttcomm_relayd_generic_reply reply
;
1056 /* Code flow error. Safety net. */
1059 /* Should have been prevented by the sessiond. */
1060 if (rsock
->minor
< 8) {
1061 ERR("Metadata regeneration unsupported before 2.8");
1066 DBG("Relayd reset metadata stream id %" PRIu64
, stream_id
);
1068 memset(&msg
, 0, sizeof(msg
));
1069 msg
.stream_id
= htobe64(stream_id
);
1070 msg
.version
= htobe64(version
);
1073 ret
= send_command(rsock
, RELAYD_RESET_METADATA
, (void *) &msg
, sizeof(msg
), 0);
1078 /* Receive response */
1079 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1084 reply
.ret_code
= be32toh(reply
.ret_code
);
1086 /* Return session id or negative ret code. */
1087 if (reply
.ret_code
!= LTTNG_OK
) {
1089 ERR("Relayd reset metadata replied error %d", reply
.ret_code
);
1095 DBG("Relayd reset metadata stream id %" PRIu64
" successfully", stream_id
);
1101 int relayd_rotate_stream(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
1102 const char *new_pathname
, uint64_t new_chunk_id
,
1106 struct lttcomm_relayd_rotate_stream
*msg
= NULL
;
1107 struct lttcomm_relayd_generic_reply reply
;
1111 /* Code flow error. Safety net. */
1114 DBG("Sending rotate stream id %" PRIu64
" command to relayd", stream_id
);
1116 /* Account for the trailing NULL. */
1117 len
= lttng_strnlen(new_pathname
, LTTNG_PATH_MAX
) + 1;
1118 if (len
> LTTNG_PATH_MAX
) {
1119 ERR("Path used in relayd rotate stream command exceeds the maximal allowed length");
1124 msg_len
= offsetof(struct lttcomm_relayd_rotate_stream
, new_pathname
) + len
;
1125 msg
= zmalloc(msg_len
);
1127 PERROR("Failed to allocate relayd rotate stream command of %d bytes",
1133 if (lttng_strncpy(msg
->new_pathname
, new_pathname
, len
)) {
1135 ERR("Failed to copy relayd rotate stream command's new path name");
1139 msg
->pathname_length
= htobe32(len
);
1140 msg
->stream_id
= htobe64(stream_id
);
1141 msg
->new_chunk_id
= htobe64(new_chunk_id
);
1143 * The seq_num is invalid for metadata streams, but it is ignored on
1146 msg
->rotate_at_seq_num
= htobe64(seq_num
);
1149 ret
= send_command(rsock
, RELAYD_ROTATE_STREAM
, (void *) msg
, msg_len
, 0);
1151 ERR("Send rotate command");
1155 /* Receive response. */
1156 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1158 ERR("Receive rotate reply");
1162 reply
.ret_code
= be32toh(reply
.ret_code
);
1164 /* Return session id or negative ret code. */
1165 if (reply
.ret_code
!= LTTNG_OK
) {
1167 ERR("Relayd rotate stream replied error %d", reply
.ret_code
);
1171 DBG("Relayd rotated stream id %" PRIu64
" successfully", stream_id
);
1179 int relayd_rotate_rename(struct lttcomm_relayd_sock
*rsock
,
1180 const char *old_path
, const char *new_path
)
1183 struct lttcomm_relayd_rotate_rename
*msg
= NULL
;
1184 struct lttcomm_relayd_generic_reply reply
;
1185 size_t old_path_length
, new_path_length
;
1188 /* Code flow error. Safety net. */
1191 DBG("Relayd rename chunk %s to %s", old_path
, new_path
);
1193 /* The two paths are sent with a '\0' delimiter between them. */
1194 old_path_length
= strlen(old_path
) + 1;
1195 new_path_length
= strlen(new_path
) + 1;
1197 msg_length
= sizeof(*msg
) + old_path_length
+ new_path_length
;
1198 msg
= zmalloc(msg_length
);
1200 PERROR("zmalloc rotate-rename command message");
1205 assert(old_path_length
<= UINT32_MAX
);
1206 msg
->old_path_length
= htobe32(old_path_length
);
1208 assert(new_path_length
<= UINT32_MAX
);
1209 msg
->new_path_length
= htobe32(new_path_length
);
1211 strcpy(msg
->paths
, old_path
);
1212 strcpy(msg
->paths
+ old_path_length
, new_path
);
1215 ret
= send_command(rsock
, RELAYD_ROTATE_RENAME
, (const void *) msg
,
1221 /* Receive response */
1222 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1227 reply
.ret_code
= be32toh(reply
.ret_code
);
1229 /* Return session id or negative ret code. */
1230 if (reply
.ret_code
!= LTTNG_OK
) {
1232 ERR("Relayd rotate rename replied error %d", reply
.ret_code
);
1238 DBG("Relayd rotate rename completed successfully");
1245 int relayd_rotate_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t chunk_id
)
1248 struct lttcomm_relayd_rotate_pending msg
;
1249 struct lttcomm_relayd_rotate_pending_reply reply
;
1251 /* Code flow error. Safety net. */
1254 DBG("Querying relayd for rotate pending with chunk_id %" PRIu64
,
1257 memset(&msg
, 0, sizeof(msg
));
1258 msg
.chunk_id
= htobe64(chunk_id
);
1261 ret
= send_command(rsock
, RELAYD_ROTATE_PENDING
, (void *) &msg
,
1267 /* Receive response */
1268 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1273 reply
.generic
.ret_code
= be32toh(reply
.generic
.ret_code
);
1275 /* Return session id or negative ret code. */
1276 if (reply
.generic
.ret_code
!= LTTNG_OK
) {
1277 ret
= -reply
.generic
.ret_code
;
1278 ERR("Relayd rotate pending replied with error %d", ret
);
1281 /* No error, just rotate pending state */
1282 if (reply
.is_pending
== 0 || reply
.is_pending
== 1) {
1283 ret
= reply
.is_pending
;
1284 DBG("Relayd rotate pending command completed successfully with result \"%s\"",
1285 ret
? "rotation pending" : "rotation NOT pending");
1287 ret
= -LTTNG_ERR_UNK
;
1295 int relayd_mkdir(struct lttcomm_relayd_sock
*rsock
, const char *path
)
1298 struct lttcomm_relayd_mkdir
*msg
;
1299 struct lttcomm_relayd_generic_reply reply
;
1302 /* Code flow error. Safety net. */
1305 DBG("Relayd mkdir path %s", path
);
1307 len
= strlen(path
) + 1;
1308 msg
= zmalloc(sizeof(msg
->length
) + len
);
1310 PERROR("Alloc mkdir msg");
1314 msg
->length
= htobe32((uint32_t) len
);
1316 if (lttng_strncpy(msg
->path
, path
, len
)) {
1322 ret
= send_command(rsock
, RELAYD_MKDIR
, (void *) msg
,
1323 sizeof(msg
->length
) + len
, 0);
1328 /* Receive response */
1329 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1334 reply
.ret_code
= be32toh(reply
.ret_code
);
1336 /* Return session id or negative ret code. */
1337 if (reply
.ret_code
!= LTTNG_OK
) {
1339 ERR("Relayd mkdir replied error %d", reply
.ret_code
);
1345 DBG("Relayd mkdir completed successfully");