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/sessiond-comm/relayd.h>
30 #include <common/index/ctf-index.h>
35 * Send command. Fill up the header and append the data.
37 static int send_command(struct lttcomm_relayd_sock
*rsock
,
38 enum lttcomm_relayd_command cmd
, const void *data
, size_t size
,
42 struct lttcomm_relayd_hdr header
;
44 uint64_t buf_size
= sizeof(header
);
46 if (rsock
->sock
.fd
< 0) {
54 buf
= zmalloc(buf_size
);
56 PERROR("zmalloc relayd send command buf");
61 memset(&header
, 0, sizeof(header
));
62 header
.cmd
= htobe32(cmd
);
63 header
.data_size
= htobe64(size
);
65 /* Zeroed for now since not used. */
66 header
.cmd_version
= 0;
67 header
.circuit_id
= 0;
69 /* Prepare buffer to send. */
70 memcpy(buf
, &header
, sizeof(header
));
72 memcpy(buf
+ sizeof(header
), data
, size
);
75 DBG3("Relayd sending command %d of size %" PRIu64
, (int) cmd
, buf_size
);
76 ret
= rsock
->sock
.ops
->sendmsg(&rsock
->sock
, buf
, buf_size
, flags
);
78 PERROR("Failed to send command %d of size %" PRIu64
,
90 * Receive reply data on socket. This MUST be call after send_command or else
91 * could result in unexpected behavior(s).
93 static int recv_reply(struct lttcomm_relayd_sock
*rsock
, void *data
, size_t size
)
97 if (rsock
->sock
.fd
< 0) {
101 DBG3("Relayd waiting for reply of size %zu", size
);
103 ret
= rsock
->sock
.ops
->recvmsg(&rsock
->sock
, data
, size
, 0);
104 if (ret
<= 0 || ret
!= size
) {
106 /* Orderly shutdown. */
107 DBG("Socket %d has performed an orderly shutdown", rsock
->sock
.fd
);
109 DBG("Receiving reply failed on sock %d for size %zu with ret %d",
110 rsock
->sock
.fd
, size
, ret
);
112 /* Always return -1 here and the caller can use errno. */
122 * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname)
123 * have no length restriction on the sender side.
124 * Length for both payloads is stored in the msg struct. A new dynamic size
125 * payload size is introduced.
127 static int relayd_create_session_2_11(struct lttcomm_relayd_sock
*rsock
,
128 char *session_name
, char *hostname
,
129 int session_live_timer
, unsigned int snapshot
)
132 struct lttcomm_relayd_create_session_2_11
*msg
= NULL
;
133 size_t session_name_len
;
137 /* The two names are sent with a '\0' delimiter between them. */
138 session_name_len
= strlen(session_name
) + 1;
139 hostname_len
= strlen(hostname
) + 1;
141 msg_length
= sizeof(*msg
) + session_name_len
+ hostname_len
;
142 msg
= zmalloc(msg_length
);
144 PERROR("zmalloc create_session_2_11 command message");
149 assert(session_name_len
<= UINT32_MAX
);
150 msg
->session_name_len
= htobe32(session_name_len
);
152 assert(hostname_len
<= UINT32_MAX
);
153 msg
->hostname_len
= htobe32(hostname_len
);
155 if (lttng_strncpy(msg
->names
, session_name
, session_name_len
)) {
159 if (lttng_strncpy(msg
->names
+ session_name_len
, hostname
, hostname_len
)) {
164 msg
->live_timer
= htobe32(session_live_timer
);
165 msg
->snapshot
= !!snapshot
;
168 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, msg
, msg_length
, 0);
177 * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to
178 * support the live reading capability.
180 static int relayd_create_session_2_4(struct lttcomm_relayd_sock
*rsock
,
181 char *session_name
, char *hostname
, int session_live_timer
,
182 unsigned int snapshot
)
185 struct lttcomm_relayd_create_session_2_4 msg
;
187 if (lttng_strncpy(msg
.session_name
, session_name
,
188 sizeof(msg
.session_name
))) {
192 if (lttng_strncpy(msg
.hostname
, hostname
, sizeof(msg
.hostname
))) {
196 msg
.live_timer
= htobe32(session_live_timer
);
197 msg
.snapshot
= htobe32(snapshot
);
200 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, &msg
, sizeof(msg
), 0);
210 * RELAYD_CREATE_SESSION from 2.1 to 2.3.
212 static int relayd_create_session_2_1(struct lttcomm_relayd_sock
*rsock
)
217 ret
= send_command(rsock
, RELAYD_CREATE_SESSION
, NULL
, 0, 0);
227 * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and
228 * set session_id of the relayd if we have a successful reply from the relayd.
230 * On success, return 0 else a negative value which is either an errno error or
231 * a lttng error code from the relayd.
233 int relayd_create_session(struct lttcomm_relayd_sock
*rsock
, uint64_t *session_id
,
234 char *session_name
, char *hostname
, int session_live_timer
,
235 unsigned int snapshot
)
238 struct lttcomm_relayd_status_session reply
;
243 DBG("Relayd create session");
245 if (rsock
->minor
< 4) {
246 /* From 2.1 to 2.3 */
247 ret
= relayd_create_session_2_1(rsock
);
248 } else if (rsock
->minor
>= 4 && rsock
->minor
< 11) {
249 /* From 2.4 to 2.10 */
250 ret
= relayd_create_session_2_4(rsock
, session_name
,
251 hostname
, session_live_timer
, snapshot
);
253 /* From 2.11 to ... */
254 ret
= relayd_create_session_2_11(rsock
, session_name
,
255 hostname
, session_live_timer
, snapshot
);
262 /* Receive response */
263 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
268 reply
.session_id
= be64toh(reply
.session_id
);
269 reply
.ret_code
= be32toh(reply
.ret_code
);
271 /* Return session id or negative ret code. */
272 if (reply
.ret_code
!= LTTNG_OK
) {
274 ERR("Relayd create session replied error %d", reply
.ret_code
);
278 *session_id
= reply
.session_id
;
281 DBG("Relayd session created with id %" PRIu64
, reply
.session_id
);
287 static int relayd_add_stream_2_1(struct lttcomm_relayd_sock
*rsock
,
288 const char *channel_name
, const char *pathname
)
291 struct lttcomm_relayd_add_stream msg
;
293 memset(&msg
, 0, sizeof(msg
));
294 if (lttng_strncpy(msg
.channel_name
, channel_name
,
295 sizeof(msg
.channel_name
))) {
300 if (lttng_strncpy(msg
.pathname
, pathname
,
301 sizeof(msg
.pathname
))) {
307 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) &msg
, sizeof(msg
), 0);
317 static int relayd_add_stream_2_2(struct lttcomm_relayd_sock
*rsock
,
318 const char *channel_name
, const char *pathname
,
319 uint64_t tracefile_size
, uint64_t tracefile_count
)
322 struct lttcomm_relayd_add_stream_2_2 msg
;
324 memset(&msg
, 0, sizeof(msg
));
325 /* Compat with relayd 2.2 to 2.10 */
326 if (lttng_strncpy(msg
.channel_name
, channel_name
,
327 sizeof(msg
.channel_name
))) {
331 if (lttng_strncpy(msg
.pathname
, pathname
,
332 sizeof(msg
.pathname
))) {
336 msg
.tracefile_size
= htobe64(tracefile_size
);
337 msg
.tracefile_count
= htobe64(tracefile_count
);
340 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) &msg
, sizeof(msg
), 0);
349 static int relayd_add_stream_2_11(struct lttcomm_relayd_sock
*rsock
,
350 const char *channel_name
, const char *pathname
,
351 uint64_t tracefile_size
, uint64_t tracefile_count
)
354 struct lttcomm_relayd_add_stream_2_11
*msg
= NULL
;
355 size_t channel_name_len
;
359 /* The two names are sent with a '\0' delimiter between them. */
360 channel_name_len
= strlen(channel_name
) + 1;
361 pathname_len
= strlen(pathname
) + 1;
363 msg_length
= sizeof(*msg
) + channel_name_len
+ pathname_len
;
364 msg
= zmalloc(msg_length
);
366 PERROR("zmalloc add_stream_2_11 command message");
371 assert(channel_name_len
<= UINT32_MAX
);
372 msg
->channel_name_len
= htobe32(channel_name_len
);
374 assert(pathname_len
<= UINT32_MAX
);
375 msg
->pathname_len
= htobe32(pathname_len
);
377 if (lttng_strncpy(msg
->names
, channel_name
, channel_name_len
)) {
381 if (lttng_strncpy(msg
->names
+ channel_name_len
, pathname
, pathname_len
)) {
386 msg
->tracefile_size
= htobe64(tracefile_size
);
387 msg
->tracefile_count
= htobe64(tracefile_count
);
390 ret
= send_command(rsock
, RELAYD_ADD_STREAM
, (void *) msg
, msg_length
, 0);
401 * Add stream on the relayd and assign stream handle to the stream_id argument.
403 * On success return 0 else return ret_code negative value.
405 int relayd_add_stream(struct lttcomm_relayd_sock
*rsock
, const char *channel_name
,
406 const char *pathname
, uint64_t *stream_id
,
407 uint64_t tracefile_size
, uint64_t tracefile_count
)
410 struct lttcomm_relayd_status_stream reply
;
412 /* Code flow error. Safety net. */
414 assert(channel_name
);
417 DBG("Relayd adding stream for channel name %s", channel_name
);
419 /* Compat with relayd 2.1 */
420 if (rsock
->minor
== 1) {
422 ret
= relayd_add_stream_2_1(rsock
, channel_name
, pathname
);
424 } else if (rsock
->minor
> 1 && rsock
->minor
< 11) {
425 /* From 2.2 to 2.10 */
426 ret
= relayd_add_stream_2_2(rsock
, channel_name
, pathname
,
427 tracefile_size
, tracefile_count
);
429 /* From 2.11 to ...*/
430 ret
= relayd_add_stream_2_11(rsock
, channel_name
, pathname
,
431 tracefile_size
, tracefile_count
);
439 /* Waiting for reply */
440 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
445 /* Back to host bytes order. */
446 reply
.handle
= be64toh(reply
.handle
);
447 reply
.ret_code
= be32toh(reply
.ret_code
);
449 /* Return session id or negative ret code. */
450 if (reply
.ret_code
!= LTTNG_OK
) {
452 ERR("Relayd add stream replied error %d", reply
.ret_code
);
456 *stream_id
= reply
.handle
;
459 DBG("Relayd stream added successfully with handle %" PRIu64
,
467 * Inform the relay that all the streams for the current channel has been sent.
469 * On success return 0 else return ret_code negative value.
471 int relayd_streams_sent(struct lttcomm_relayd_sock
*rsock
)
474 struct lttcomm_relayd_generic_reply reply
;
476 /* Code flow error. Safety net. */
479 DBG("Relayd sending streams sent.");
481 /* This feature was introduced in 2.4, ignore it for earlier versions. */
482 if (rsock
->minor
< 4) {
488 ret
= send_command(rsock
, RELAYD_STREAMS_SENT
, NULL
, 0, 0);
493 /* Waiting for reply */
494 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
499 /* Back to host bytes order. */
500 reply
.ret_code
= be32toh(reply
.ret_code
);
502 /* Return session id or negative ret code. */
503 if (reply
.ret_code
!= LTTNG_OK
) {
505 ERR("Relayd streams sent replied error %d", reply
.ret_code
);
512 DBG("Relayd streams sent success");
520 * Check version numbers on the relayd.
521 * If major versions are compatible, we assign minor_to_use to the
522 * minor version of the procotol we are going to use for this session.
524 * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL
525 * otherwise, or a negative value on network errors.
527 int relayd_version_check(struct lttcomm_relayd_sock
*rsock
)
530 struct lttcomm_relayd_version msg
;
532 /* Code flow error. Safety net. */
535 DBG("Relayd version check for major.minor %u.%u", rsock
->major
,
538 memset(&msg
, 0, sizeof(msg
));
539 /* Prepare network byte order before transmission. */
540 msg
.major
= htobe32(rsock
->major
);
541 msg
.minor
= htobe32(rsock
->minor
);
544 ret
= send_command(rsock
, RELAYD_VERSION
, (void *) &msg
, sizeof(msg
), 0);
549 /* Receive response */
550 ret
= recv_reply(rsock
, (void *) &msg
, sizeof(msg
));
555 /* Set back to host bytes order */
556 msg
.major
= be32toh(msg
.major
);
557 msg
.minor
= be32toh(msg
.minor
);
560 * Only validate the major version. If the other side is higher,
561 * communication is not possible. Only major version equal can talk to each
562 * other. If the minor version differs, the lowest version is used by both
565 if (msg
.major
!= rsock
->major
) {
567 ret
= LTTNG_ERR_RELAYD_VERSION_FAIL
;
568 DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)",
569 msg
.major
, rsock
->major
);
574 * If the relayd's minor version is higher, it will adapt to our version so
575 * we can continue to use the latest relayd communication data structure.
576 * If the received minor version is higher, the relayd should adapt to us.
578 if (rsock
->minor
> msg
.minor
) {
579 rsock
->minor
= msg
.minor
;
582 /* Version number compatible */
583 DBG2("Relayd version is compatible, using protocol version %u.%u",
584 rsock
->major
, rsock
->minor
);
592 * Add stream on the relayd and assign stream handle to the stream_id argument.
594 * On success return 0 else return ret_code negative value.
596 int relayd_send_metadata(struct lttcomm_relayd_sock
*rsock
, size_t len
)
600 /* Code flow error. Safety net. */
603 DBG("Relayd sending metadata of size %zu", len
);
606 ret
= send_command(rsock
, RELAYD_SEND_METADATA
, NULL
, len
, 0);
611 DBG2("Relayd metadata added successfully");
614 * After that call, the metadata data MUST be sent to the relayd so the
615 * receive size on the other end matches the len of the metadata packet
616 * header. This is why we don't wait for a reply here.
624 * Connect to relay daemon with an allocated lttcomm_relayd_sock.
626 int relayd_connect(struct lttcomm_relayd_sock
*rsock
)
628 /* Code flow error. Safety net. */
631 if (!rsock
->sock
.ops
) {
633 * Attempting a connect on a non-initialized socket.
638 DBG3("Relayd connect ...");
640 return rsock
->sock
.ops
->connect(&rsock
->sock
);
644 * Close relayd socket with an allocated lttcomm_relayd_sock.
646 * If no socket operations are found, simply return 0 meaning that everything
647 * is fine. Without operations, the socket can not possibly be opened or used.
648 * This is possible if the socket was allocated but not created. However, the
649 * caller could simply use it to store a valid file descriptor for instance
650 * passed over a Unix socket and call this to cleanup but still without a valid
653 * Return the close returned value. On error, a negative value is usually
654 * returned back from close(2).
656 int relayd_close(struct lttcomm_relayd_sock
*rsock
)
660 /* Code flow error. Safety net. */
663 /* An invalid fd is fine, return success. */
664 if (rsock
->sock
.fd
< 0) {
669 DBG3("Relayd closing socket %d", rsock
->sock
.fd
);
671 if (rsock
->sock
.ops
) {
672 ret
= rsock
->sock
.ops
->close(&rsock
->sock
);
674 /* Default call if no specific ops found. */
675 ret
= close(rsock
->sock
.fd
);
677 PERROR("relayd_close default close");
687 * Send data header structure to the relayd.
689 int relayd_send_data_hdr(struct lttcomm_relayd_sock
*rsock
,
690 struct lttcomm_relayd_data_hdr
*hdr
, size_t size
)
694 /* Code flow error. Safety net. */
698 if (rsock
->sock
.fd
< 0) {
702 DBG3("Relayd sending data header of size %zu", size
);
704 /* Again, safety net */
706 size
= sizeof(struct lttcomm_relayd_data_hdr
);
709 /* Only send data header. */
710 ret
= rsock
->sock
.ops
->sendmsg(&rsock
->sock
, hdr
, size
, 0);
717 * The data MUST be sent right after that command for the receive on the
718 * other end to match the size in the header.
726 * Send close stream command to the relayd.
728 int relayd_send_close_stream(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
729 uint64_t last_net_seq_num
)
732 struct lttcomm_relayd_close_stream msg
;
733 struct lttcomm_relayd_generic_reply reply
;
735 /* Code flow error. Safety net. */
738 DBG("Relayd closing stream id %" PRIu64
, stream_id
);
740 memset(&msg
, 0, sizeof(msg
));
741 msg
.stream_id
= htobe64(stream_id
);
742 msg
.last_net_seq_num
= htobe64(last_net_seq_num
);
745 ret
= send_command(rsock
, RELAYD_CLOSE_STREAM
, (void *) &msg
, sizeof(msg
), 0);
750 /* Receive response */
751 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
756 reply
.ret_code
= be32toh(reply
.ret_code
);
758 /* Return session id or negative ret code. */
759 if (reply
.ret_code
!= LTTNG_OK
) {
761 ERR("Relayd close stream replied error %d", reply
.ret_code
);
767 DBG("Relayd close stream id %" PRIu64
" successfully", stream_id
);
774 * Check for data availability for a given stream id.
776 * Return 0 if NOT pending, 1 if so and a negative value on error.
778 int relayd_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
779 uint64_t last_net_seq_num
)
782 struct lttcomm_relayd_data_pending msg
;
783 struct lttcomm_relayd_generic_reply reply
;
785 /* Code flow error. Safety net. */
788 DBG("Relayd data pending for stream id %" PRIu64
, stream_id
);
790 memset(&msg
, 0, sizeof(msg
));
791 msg
.stream_id
= htobe64(stream_id
);
792 msg
.last_net_seq_num
= htobe64(last_net_seq_num
);
795 ret
= send_command(rsock
, RELAYD_DATA_PENDING
, (void *) &msg
,
801 /* Receive response */
802 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
807 reply
.ret_code
= be32toh(reply
.ret_code
);
809 /* Return session id or negative ret code. */
810 if (reply
.ret_code
>= LTTNG_OK
) {
811 ERR("Relayd data pending replied error %d", reply
.ret_code
);
814 /* At this point, the ret code is either 1 or 0 */
815 ret
= reply
.ret_code
;
817 DBG("Relayd data is %s pending for stream id %" PRIu64
,
818 ret
== 1 ? "" : "NOT", stream_id
);
825 * Check on the relayd side for a quiescent state on the control socket.
827 int relayd_quiescent_control(struct lttcomm_relayd_sock
*rsock
,
828 uint64_t metadata_stream_id
)
831 struct lttcomm_relayd_quiescent_control msg
;
832 struct lttcomm_relayd_generic_reply reply
;
834 /* Code flow error. Safety net. */
837 DBG("Relayd checking quiescent control state");
839 memset(&msg
, 0, sizeof(msg
));
840 msg
.stream_id
= htobe64(metadata_stream_id
);
843 ret
= send_command(rsock
, RELAYD_QUIESCENT_CONTROL
, &msg
, sizeof(msg
), 0);
848 /* Receive response */
849 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
854 reply
.ret_code
= be32toh(reply
.ret_code
);
856 /* Return session id or negative ret code. */
857 if (reply
.ret_code
!= LTTNG_OK
) {
859 ERR("Relayd quiescent control replied error %d", reply
.ret_code
);
863 /* Control socket is quiescent */
871 * Begin a data pending command for a specific session id.
873 int relayd_begin_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t id
)
876 struct lttcomm_relayd_begin_data_pending msg
;
877 struct lttcomm_relayd_generic_reply reply
;
879 /* Code flow error. Safety net. */
882 DBG("Relayd begin data pending");
884 memset(&msg
, 0, sizeof(msg
));
885 msg
.session_id
= htobe64(id
);
888 ret
= send_command(rsock
, RELAYD_BEGIN_DATA_PENDING
, &msg
, sizeof(msg
), 0);
893 /* Receive response */
894 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
899 reply
.ret_code
= be32toh(reply
.ret_code
);
901 /* Return session id or negative ret code. */
902 if (reply
.ret_code
!= LTTNG_OK
) {
904 ERR("Relayd begin data pending replied error %d", reply
.ret_code
);
915 * End a data pending command for a specific session id.
917 * Return 0 on success and set is_data_inflight to 0 if no data is being
918 * streamed or 1 if it is the case.
920 int relayd_end_data_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t id
,
921 unsigned int *is_data_inflight
)
924 struct lttcomm_relayd_end_data_pending msg
;
925 struct lttcomm_relayd_generic_reply reply
;
927 /* Code flow error. Safety net. */
930 DBG("Relayd end data pending");
932 memset(&msg
, 0, sizeof(msg
));
933 msg
.session_id
= htobe64(id
);
936 ret
= send_command(rsock
, RELAYD_END_DATA_PENDING
, &msg
, sizeof(msg
), 0);
941 /* Receive response */
942 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
947 recv_ret
= be32toh(reply
.ret_code
);
953 *is_data_inflight
= recv_ret
;
955 DBG("Relayd end data pending is data inflight: %d", recv_ret
);
964 * Send index to the relayd.
966 int relayd_send_index(struct lttcomm_relayd_sock
*rsock
,
967 struct ctf_packet_index
*index
, uint64_t relay_stream_id
,
968 uint64_t net_seq_num
)
971 struct lttcomm_relayd_index msg
;
972 struct lttcomm_relayd_generic_reply reply
;
974 /* Code flow error. Safety net. */
977 if (rsock
->minor
< 4) {
978 DBG("Not sending indexes before protocol 2.4");
983 DBG("Relayd sending index for stream ID %" PRIu64
, relay_stream_id
);
985 memset(&msg
, 0, sizeof(msg
));
986 msg
.relay_stream_id
= htobe64(relay_stream_id
);
987 msg
.net_seq_num
= htobe64(net_seq_num
);
989 /* The index is already in big endian. */
990 msg
.packet_size
= index
->packet_size
;
991 msg
.content_size
= index
->content_size
;
992 msg
.timestamp_begin
= index
->timestamp_begin
;
993 msg
.timestamp_end
= index
->timestamp_end
;
994 msg
.events_discarded
= index
->events_discarded
;
995 msg
.stream_id
= index
->stream_id
;
997 if (rsock
->minor
>= 8) {
998 msg
.stream_instance_id
= index
->stream_instance_id
;
999 msg
.packet_seq_num
= index
->packet_seq_num
;
1003 ret
= send_command(rsock
, RELAYD_SEND_INDEX
, &msg
,
1004 lttcomm_relayd_index_len(lttng_to_index_major(rsock
->major
,
1006 lttng_to_index_minor(rsock
->major
, rsock
->minor
)),
1012 /* Receive response */
1013 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1018 reply
.ret_code
= be32toh(reply
.ret_code
);
1020 /* Return session id or negative ret code. */
1021 if (reply
.ret_code
!= LTTNG_OK
) {
1023 ERR("Relayd send index replied error %d", reply
.ret_code
);
1034 * Ask the relay to reset the metadata trace file (regeneration).
1036 int relayd_reset_metadata(struct lttcomm_relayd_sock
*rsock
,
1037 uint64_t stream_id
, uint64_t version
)
1040 struct lttcomm_relayd_reset_metadata msg
;
1041 struct lttcomm_relayd_generic_reply reply
;
1043 /* Code flow error. Safety net. */
1046 /* Should have been prevented by the sessiond. */
1047 if (rsock
->minor
< 8) {
1048 ERR("Metadata regeneration unsupported before 2.8");
1053 DBG("Relayd reset metadata stream id %" PRIu64
, stream_id
);
1055 memset(&msg
, 0, sizeof(msg
));
1056 msg
.stream_id
= htobe64(stream_id
);
1057 msg
.version
= htobe64(version
);
1060 ret
= send_command(rsock
, RELAYD_RESET_METADATA
, (void *) &msg
, sizeof(msg
), 0);
1065 /* Receive response */
1066 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1071 reply
.ret_code
= be32toh(reply
.ret_code
);
1073 /* Return session id or negative ret code. */
1074 if (reply
.ret_code
!= LTTNG_OK
) {
1076 ERR("Relayd reset metadata replied error %d", reply
.ret_code
);
1082 DBG("Relayd reset metadata stream id %" PRIu64
" successfully", stream_id
);
1088 int relayd_rotate_stream(struct lttcomm_relayd_sock
*rsock
, uint64_t stream_id
,
1089 const char *new_pathname
, uint64_t new_chunk_id
,
1093 struct lttcomm_relayd_rotate_stream
*msg
= NULL
;
1094 struct lttcomm_relayd_generic_reply reply
;
1098 /* Code flow error. Safety net. */
1101 DBG("Sending rotate stream id %" PRIu64
" command to relayd", stream_id
);
1103 /* Account for the trailing NULL. */
1104 len
= strnlen(new_pathname
, LTTNG_PATH_MAX
) + 1;
1105 if (len
> LTTNG_PATH_MAX
) {
1106 ERR("Path used in relayd rotate stream command exceeds the maximal allowed length");
1111 msg_len
= offsetof(struct lttcomm_relayd_rotate_stream
, new_pathname
) + len
;
1112 msg
= zmalloc(msg_len
);
1114 PERROR("Failed to allocate relayd rotate stream command of %d bytes",
1120 if (lttng_strncpy(msg
->new_pathname
, new_pathname
, len
)) {
1122 ERR("Failed to copy relayd rotate stream command's new path name");
1126 msg
->pathname_length
= htobe32(len
);
1127 msg
->stream_id
= htobe64(stream_id
);
1128 msg
->new_chunk_id
= htobe64(new_chunk_id
);
1130 * The seq_num is invalid for metadata streams, but it is ignored on
1133 msg
->rotate_at_seq_num
= htobe64(seq_num
);
1136 ret
= send_command(rsock
, RELAYD_ROTATE_STREAM
, (void *) msg
, msg_len
, 0);
1138 ERR("Send rotate command");
1142 /* Receive response. */
1143 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1145 ERR("Receive rotate reply");
1149 reply
.ret_code
= be32toh(reply
.ret_code
);
1151 /* Return session id or negative ret code. */
1152 if (reply
.ret_code
!= LTTNG_OK
) {
1154 ERR("Relayd rotate stream replied error %d", reply
.ret_code
);
1158 DBG("Relayd rotated stream id %" PRIu64
" successfully", stream_id
);
1166 int relayd_rotate_rename(struct lttcomm_relayd_sock
*rsock
,
1167 const char *old_path
, const char *new_path
)
1170 struct lttcomm_relayd_rotate_rename
*msg
= NULL
;
1171 struct lttcomm_relayd_generic_reply reply
;
1172 size_t old_path_length
, new_path_length
;
1175 /* Code flow error. Safety net. */
1178 DBG("Relayd rename chunk %s to %s", old_path
, new_path
);
1180 /* The two paths are sent with a '\0' delimiter between them. */
1181 old_path_length
= strlen(old_path
) + 1;
1182 new_path_length
= strlen(new_path
) + 1;
1184 msg_length
= sizeof(*msg
) + old_path_length
+ new_path_length
;
1185 msg
= zmalloc(msg_length
);
1187 PERROR("zmalloc rotate-rename command message");
1192 assert(old_path_length
<= UINT32_MAX
);
1193 msg
->old_path_length
= htobe32(old_path_length
);
1195 assert(new_path_length
<= UINT32_MAX
);
1196 msg
->new_path_length
= htobe32(new_path_length
);
1198 strcpy(msg
->paths
, old_path
);
1199 strcpy(msg
->paths
+ old_path_length
, new_path
);
1202 ret
= send_command(rsock
, RELAYD_ROTATE_RENAME
, (const void *) msg
,
1208 /* Receive response */
1209 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1214 reply
.ret_code
= be32toh(reply
.ret_code
);
1216 /* Return session id or negative ret code. */
1217 if (reply
.ret_code
!= LTTNG_OK
) {
1219 ERR("Relayd rotate rename replied error %d", reply
.ret_code
);
1225 DBG("Relayd rotate rename completed successfully");
1232 int relayd_rotate_pending(struct lttcomm_relayd_sock
*rsock
, uint64_t chunk_id
)
1235 struct lttcomm_relayd_rotate_pending msg
;
1236 struct lttcomm_relayd_rotate_pending_reply reply
;
1238 /* Code flow error. Safety net. */
1241 DBG("Querying relayd for rotate pending with chunk_id %" PRIu64
,
1244 memset(&msg
, 0, sizeof(msg
));
1245 msg
.chunk_id
= htobe64(chunk_id
);
1248 ret
= send_command(rsock
, RELAYD_ROTATE_PENDING
, (void *) &msg
,
1254 /* Receive response */
1255 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1260 reply
.generic
.ret_code
= be32toh(reply
.generic
.ret_code
);
1262 /* Return session id or negative ret code. */
1263 if (reply
.generic
.ret_code
!= LTTNG_OK
) {
1264 ret
= -reply
.generic
.ret_code
;
1265 ERR("Relayd rotate pending replied with error %d", ret
);
1268 /* No error, just rotate pending state */
1269 if (reply
.is_pending
== 0 || reply
.is_pending
== 1) {
1270 ret
= reply
.is_pending
;
1271 DBG("Relayd rotate pending command completed successfully with result \"%s\"",
1272 ret
? "rotation pending" : "rotation NOT pending");
1274 ret
= -LTTNG_ERR_UNK
;
1282 int relayd_mkdir(struct lttcomm_relayd_sock
*rsock
, const char *path
)
1285 struct lttcomm_relayd_mkdir
*msg
;
1286 struct lttcomm_relayd_generic_reply reply
;
1289 /* Code flow error. Safety net. */
1292 DBG("Relayd mkdir path %s", path
);
1294 len
= strlen(path
) + 1;
1295 msg
= zmalloc(sizeof(msg
->length
) + len
);
1297 PERROR("Alloc mkdir msg");
1301 msg
->length
= htobe32((uint32_t) len
);
1303 if (lttng_strncpy(msg
->path
, path
, len
)) {
1309 ret
= send_command(rsock
, RELAYD_MKDIR
, (void *) msg
,
1310 sizeof(msg
->length
) + len
, 0);
1315 /* Receive response */
1316 ret
= recv_reply(rsock
, (void *) &reply
, sizeof(reply
));
1321 reply
.ret_code
= be32toh(reply
.ret_code
);
1323 /* Return session id or negative ret code. */
1324 if (reply
.ret_code
!= LTTNG_OK
) {
1326 ERR("Relayd mkdir replied error %d", reply
.ret_code
);
1332 DBG("Relayd mkdir completed successfully");