2 Unix SMB/CIFS implementation.
3 Samba internal messaging functions
4 Copyright (C) 2007 by Volker Lendecke
5 Copyright (C) 2007 by Andrew Tridgell
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "ctdbd_conn.h"
26 #include "ctdb_packet.h"
30 * It is not possible to include ctdb.h and tdb_compat.h (included via
31 * some other include above) without warnings. This fixes those
39 #ifdef typesafe_cb_preargs
40 #undef typesafe_cb_preargs
43 #ifdef typesafe_cb_postargs
44 #undef typesafe_cb_postargs
47 /* paths to these include files come from --with-ctdb= in configure */
50 #include "ctdb_private.h"
52 struct ctdbd_connection
{
53 struct messaging_context
*msg_ctx
;
57 struct ctdb_packet_context
*pkt
;
58 struct tevent_fd
*fde
;
60 bool (*release_ip_handler
)(const char *ip_addr
, void *private_data
);
61 void *release_ip_priv
;
64 static uint32_t ctdbd_next_reqid(struct ctdbd_connection
*conn
)
67 if (conn
->reqid
== 0) {
73 static NTSTATUS
ctdbd_control(struct ctdbd_connection
*conn
,
74 uint32_t vnn
, uint32_t opcode
,
75 uint64_t srvid
, uint32_t flags
, TDB_DATA data
,
76 TALLOC_CTX
*mem_ctx
, TDB_DATA
*outdata
,
80 * exit on fatal communications errors with the ctdbd daemon
82 static void cluster_fatal(const char *why
)
84 DEBUG(0,("cluster fatal event: %s - exiting immediately\n", why
));
85 /* we don't use smb_panic() as we don't want to delay to write
86 a core file. We need to release this process id immediately
87 so that someone else can take over without getting sharing
95 static void ctdb_packet_dump(struct ctdb_req_header
*hdr
)
97 if (DEBUGLEVEL
< 11) {
100 DEBUGADD(11, ("len=%d, magic=%x, vers=%d, gen=%d, op=%d, reqid=%d\n",
101 (int)hdr
->length
, (int)hdr
->ctdb_magic
,
102 (int)hdr
->ctdb_version
, (int)hdr
->generation
,
103 (int)hdr
->operation
, (int)hdr
->reqid
));
107 * Register a srvid with ctdbd
109 NTSTATUS
register_with_ctdbd(struct ctdbd_connection
*conn
, uint64_t srvid
)
113 return ctdbd_control(conn
, CTDB_CURRENT_NODE
,
114 CTDB_CONTROL_REGISTER_SRVID
, srvid
, 0,
115 tdb_null
, NULL
, NULL
, &cstatus
);
119 * get our vnn from the cluster
121 static NTSTATUS
get_cluster_vnn(struct ctdbd_connection
*conn
, uint32_t *vnn
)
125 status
= ctdbd_control(conn
,
126 CTDB_CURRENT_NODE
, CTDB_CONTROL_GET_PNN
, 0, 0,
127 tdb_null
, NULL
, NULL
, &cstatus
);
128 if (!NT_STATUS_IS_OK(status
)) {
129 DEBUG(1, ("ctdbd_control failed: %s\n", nt_errstr(status
)));
132 *vnn
= (uint32_t)cstatus
;
137 * Are we active (i.e. not banned or stopped?)
139 static bool ctdbd_working(struct ctdbd_connection
*conn
, uint32_t vnn
)
144 struct ctdb_node_map
*m
;
145 uint32_t failure_flags
;
149 status
= ctdbd_control(conn
, CTDB_CURRENT_NODE
,
150 CTDB_CONTROL_GET_NODEMAP
, 0, 0,
151 tdb_null
, talloc_tos(), &outdata
, &cstatus
);
152 if (!NT_STATUS_IS_OK(status
)) {
153 DEBUG(1, ("ctdbd_control failed: %s\n", nt_errstr(status
)));
156 if ((cstatus
!= 0) || (outdata
.dptr
== NULL
)) {
157 DEBUG(2, ("Received invalid ctdb data\n"));
161 m
= (struct ctdb_node_map
*)outdata
.dptr
;
163 for (i
=0; i
<m
->num
; i
++) {
164 if (vnn
== m
->nodes
[i
].pnn
) {
170 DEBUG(2, ("Did not find ourselves (node %d) in nodemap\n",
175 failure_flags
= NODE_FLAGS_BANNED
| NODE_FLAGS_DISCONNECTED
176 | NODE_FLAGS_PERMANENTLY_DISABLED
| NODE_FLAGS_STOPPED
;
178 if ((m
->nodes
[i
].flags
& failure_flags
) != 0) {
179 DEBUG(2, ("Node has status %x, not active\n",
180 (int)m
->nodes
[i
].flags
));
186 TALLOC_FREE(outdata
.dptr
);
190 uint32_t ctdbd_vnn(const struct ctdbd_connection
*conn
)
192 return conn
->our_vnn
;
195 const char *lp_ctdbd_socket(void)
199 ret
= lp__ctdbd_socket();
200 if (ret
!= NULL
&& strlen(ret
) > 0) {
208 * Get us a ctdb connection
211 static NTSTATUS
ctdbd_connect(TALLOC_CTX
*mem_ctx
,
212 struct ctdb_packet_context
**presult
)
214 struct ctdb_packet_context
*result
;
215 const char *sockname
= lp_ctdbd_socket();
216 struct sockaddr_un addr
= { 0, };
220 fd
= socket(AF_UNIX
, SOCK_STREAM
, 0);
222 DEBUG(3, ("Could not create socket: %s\n", strerror(errno
)));
223 return map_nt_error_from_unix(errno
);
226 addr
.sun_family
= AF_UNIX
;
227 snprintf(addr
.sun_path
, sizeof(addr
.sun_path
), "%s", sockname
);
229 salen
= sizeof(struct sockaddr_un
);
230 if (connect(fd
, (struct sockaddr
*)(void *)&addr
, salen
) == -1) {
231 DEBUG(1, ("connect(%s) failed: %s\n", sockname
,
234 return map_nt_error_from_unix(errno
);
237 if (!(result
= ctdb_packet_init(mem_ctx
, fd
))) {
239 return NT_STATUS_NO_MEMORY
;
247 * Do we have a complete ctdb packet in the queue?
250 static bool ctdb_req_complete(const uint8_t *buf
, size_t available
,
256 if (available
< sizeof(msglen
)) {
260 msglen
= *((const uint32_t *)buf
);
262 DEBUG(11, ("msglen = %d\n", msglen
));
264 if (msglen
< sizeof(struct ctdb_req_header
)) {
265 DEBUG(0, ("Got invalid msglen: %d, expected at least %d for "
266 "the req_header\n", (int)msglen
,
267 (int)sizeof(struct ctdb_req_header
)));
268 cluster_fatal("ctdbd protocol error\n");
271 if (available
< msglen
) {
280 * State necessary to defer an incoming message while we are waiting for a
284 struct deferred_msg_state
{
285 struct messaging_context
*msg_ctx
;
286 struct messaging_rec
*rec
;
290 * Timed event handler for the deferred message
293 static void deferred_message_dispatch(struct tevent_context
*event_ctx
,
294 struct tevent_timer
*te
,
298 struct deferred_msg_state
*state
= talloc_get_type_abort(
299 private_data
, struct deferred_msg_state
);
301 messaging_dispatch_rec(state
->msg_ctx
, state
->rec
);
306 struct req_pull_state
{
312 * Pull a ctdb request out of the incoming ctdb_packet queue
315 static NTSTATUS
ctdb_req_pull(uint8_t *buf
, size_t length
,
318 struct req_pull_state
*state
= (struct req_pull_state
*)private_data
;
320 state
->req
.data
= talloc_move(state
->mem_ctx
, &buf
);
321 state
->req
.length
= length
;
326 * Fetch a messaging_rec from an incoming ctdb style message
329 static struct messaging_rec
*ctdb_pull_messaging_rec(TALLOC_CTX
*mem_ctx
,
330 size_t overall_length
,
331 struct ctdb_req_message
*msg
)
333 struct messaging_rec
*result
;
335 enum ndr_err_code ndr_err
;
337 if ((overall_length
< offsetof(struct ctdb_req_message
, data
))
339 < offsetof(struct ctdb_req_message
, data
) + msg
->datalen
)) {
341 cluster_fatal("got invalid msg length");
344 if (!(result
= talloc(mem_ctx
, struct messaging_rec
))) {
345 DEBUG(0, ("talloc failed\n"));
349 blob
= data_blob_const(msg
->data
, msg
->datalen
);
351 ndr_err
= ndr_pull_struct_blob(
352 &blob
, result
, result
,
353 (ndr_pull_flags_fn_t
)ndr_pull_messaging_rec
);
355 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
356 DEBUG(0, ("ndr_pull_struct_blob failed: %s\n",
357 ndr_errstr(ndr_err
)));
362 if (DEBUGLEVEL
>= 11) {
363 DEBUG(11, ("ctdb_pull_messaging_rec:\n"));
364 NDR_PRINT_DEBUG(messaging_rec
, result
);
370 static NTSTATUS
ctdb_packet_fd_read_sync(struct ctdb_packet_context
*ctx
)
372 int timeout
= lp_ctdb_timeout();
377 return ctdb_packet_fd_read_sync_timeout(ctx
, timeout
);
381 * Read a full ctdbd request. If we have a messaging context, defer incoming
382 * messages that might come in between.
385 static NTSTATUS
ctdb_read_req(struct ctdbd_connection
*conn
, uint32_t reqid
,
386 TALLOC_CTX
*mem_ctx
, void *result
)
388 struct ctdb_req_header
*hdr
;
389 struct req_pull_state state
;
394 state
.mem_ctx
= mem_ctx
;
396 while (!ctdb_packet_handler(conn
->pkt
, ctdb_req_complete
,
397 ctdb_req_pull
, &state
, &status
)) {
401 status
= ctdb_packet_fd_read_sync(conn
->pkt
);
403 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_BUSY
)) {
406 } else if (NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
411 if (!NT_STATUS_IS_OK(status
)) {
412 DEBUG(0, ("packet_fd_read failed: %s\n", nt_errstr(status
)));
413 cluster_fatal("ctdbd died\n");
417 if (!NT_STATUS_IS_OK(status
)) {
418 DEBUG(0, ("Could not read ctdb_packet: %s\n", nt_errstr(status
)));
419 cluster_fatal("ctdbd died\n");
422 hdr
= (struct ctdb_req_header
*)state
.req
.data
;
424 DEBUG(11, ("Received ctdb packet\n"));
425 ctdb_packet_dump(hdr
);
427 if (hdr
->operation
== CTDB_REQ_MESSAGE
) {
428 struct tevent_timer
*evt
;
429 struct deferred_msg_state
*msg_state
;
430 struct ctdb_req_message
*msg
= (struct ctdb_req_message
*)hdr
;
432 if (conn
->msg_ctx
== NULL
) {
433 DEBUG(1, ("Got a message without having a msg ctx, "
434 "dropping msg %llu\n",
435 (long long unsigned)msg
->srvid
));
439 if ((conn
->release_ip_handler
!= NULL
)
440 && (msg
->srvid
== CTDB_SRVID_RELEASE_IP
)) {
443 /* must be dispatched immediately */
444 DEBUG(10, ("received CTDB_SRVID_RELEASE_IP\n"));
445 ret
= conn
->release_ip_handler((const char *)msg
->data
,
446 conn
->release_ip_priv
);
449 * We need to release the ip,
450 * so return an error to the upper layers.
452 * We make sure we don't trigger this again.
454 conn
->release_ip_handler
= NULL
;
455 conn
->release_ip_priv
= NULL
;
456 return NT_STATUS_ADDRESS_CLOSED
;
462 if ((msg
->srvid
== CTDB_SRVID_RECONFIGURE
)
463 || (msg
->srvid
== CTDB_SRVID_SAMBA_NOTIFY
)) {
465 DEBUG(1, ("ctdb_read_req: Got %s message\n",
466 (msg
->srvid
== CTDB_SRVID_RECONFIGURE
)
467 ? "cluster reconfigure" : "SAMBA_NOTIFY"));
469 messaging_send(conn
->msg_ctx
,
470 messaging_server_id(conn
->msg_ctx
),
471 MSG_SMB_BRL_VALIDATE
, &data_blob_null
);
476 msg_state
= talloc(NULL
, struct deferred_msg_state
);
477 if (msg_state
== NULL
) {
478 DEBUG(0, ("talloc failed\n"));
483 if (!(msg_state
->rec
= ctdb_pull_messaging_rec(
484 msg_state
, state
.req
.length
, msg
))) {
485 DEBUG(0, ("ctdbd_pull_messaging_rec failed\n"));
486 TALLOC_FREE(msg_state
);
493 msg_state
->msg_ctx
= conn
->msg_ctx
;
496 * We're waiting for a call reply, but an async message has
497 * crossed. Defer dispatching to the toplevel event loop.
499 evt
= tevent_add_timer(conn
->msg_ctx
->event_ctx
,
500 conn
->msg_ctx
->event_ctx
,
502 deferred_message_dispatch
,
505 DEBUG(0, ("event_add_timed failed\n"));
506 TALLOC_FREE(msg_state
);
514 if ((reqid
!= 0) && (hdr
->reqid
!= reqid
)) {
515 /* we got the wrong reply */
516 DEBUG(0,("Discarding mismatched ctdb reqid %u should have "
517 "been %u\n", hdr
->reqid
, reqid
));
522 *((void **)result
) = talloc_move(mem_ctx
, &hdr
);
528 * Get us a ctdbd connection
531 static NTSTATUS
ctdbd_init_connection(TALLOC_CTX
*mem_ctx
,
532 struct ctdbd_connection
**pconn
)
534 struct ctdbd_connection
*conn
;
537 if (!(conn
= talloc_zero(mem_ctx
, struct ctdbd_connection
))) {
538 DEBUG(0, ("talloc failed\n"));
539 return NT_STATUS_NO_MEMORY
;
542 status
= ctdbd_connect(conn
, &conn
->pkt
);
544 if (!NT_STATUS_IS_OK(status
)) {
545 DEBUG(10, ("ctdbd_connect failed: %s\n", nt_errstr(status
)));
549 status
= get_cluster_vnn(conn
, &conn
->our_vnn
);
551 if (!NT_STATUS_IS_OK(status
)) {
552 DEBUG(10, ("get_cluster_vnn failed: %s\n", nt_errstr(status
)));
556 if (!ctdbd_working(conn
, conn
->our_vnn
)) {
557 DEBUG(2, ("Node is not working, can not connect\n"));
558 status
= NT_STATUS_INTERNAL_DB_ERROR
;
562 generate_random_buffer((unsigned char *)&conn
->rand_srvid
,
563 sizeof(conn
->rand_srvid
));
565 status
= register_with_ctdbd(conn
, conn
->rand_srvid
);
567 if (!NT_STATUS_IS_OK(status
)) {
568 DEBUG(5, ("Could not register random srvid: %s\n",
582 * Get us a ctdbd connection and register us as a process
585 NTSTATUS
ctdbd_messaging_connection(TALLOC_CTX
*mem_ctx
,
586 struct ctdbd_connection
**pconn
)
588 struct ctdbd_connection
*conn
;
591 status
= ctdbd_init_connection(mem_ctx
, &conn
);
593 if (!NT_STATUS_IS_OK(status
)) {
597 status
= register_with_ctdbd(conn
, (uint64_t)getpid());
598 if (!NT_STATUS_IS_OK(status
)) {
602 status
= register_with_ctdbd(conn
, MSG_SRVID_SAMBA
);
603 if (!NT_STATUS_IS_OK(status
)) {
607 status
= register_with_ctdbd(conn
, CTDB_SRVID_SAMBA_NOTIFY
);
608 if (!NT_STATUS_IS_OK(status
)) {
620 struct messaging_context
*ctdb_conn_msg_ctx(struct ctdbd_connection
*conn
)
622 return conn
->msg_ctx
;
625 int ctdbd_conn_get_fd(struct ctdbd_connection
*conn
)
627 return ctdb_packet_get_fd(conn
->pkt
);
631 * Packet handler to receive and handle a ctdb message
633 static NTSTATUS
ctdb_handle_message(uint8_t *buf
, size_t length
,
636 struct ctdbd_connection
*conn
= talloc_get_type_abort(
637 private_data
, struct ctdbd_connection
);
638 struct ctdb_req_message
*msg
;
639 struct messaging_rec
*msg_rec
;
641 msg
= (struct ctdb_req_message
*)buf
;
643 if (msg
->hdr
.operation
!= CTDB_REQ_MESSAGE
) {
644 DEBUG(0, ("Received async msg of type %u, discarding\n",
645 msg
->hdr
.operation
));
647 return NT_STATUS_INVALID_PARAMETER
;
650 if ((conn
->release_ip_handler
!= NULL
)
651 && (msg
->srvid
== CTDB_SRVID_RELEASE_IP
)) {
654 /* must be dispatched immediately */
655 DEBUG(10, ("received CTDB_SRVID_RELEASE_IP\n"));
656 ret
= conn
->release_ip_handler((const char *)msg
->data
,
657 conn
->release_ip_priv
);
660 * We need to release the ip.
662 * We make sure we don't trigger this again.
664 conn
->release_ip_handler
= NULL
;
665 conn
->release_ip_priv
= NULL
;
671 SMB_ASSERT(conn
->msg_ctx
!= NULL
);
673 if ((msg
->srvid
== CTDB_SRVID_RECONFIGURE
)
674 || (msg
->srvid
== CTDB_SRVID_SAMBA_NOTIFY
)){
675 DEBUG(0,("Got cluster reconfigure message\n"));
677 * when the cluster is reconfigured or someone of the
678 * family has passed away (SAMBA_NOTIFY), we need to
679 * clean the brl database
681 messaging_send(conn
->msg_ctx
,
682 messaging_server_id(conn
->msg_ctx
),
683 MSG_SMB_BRL_VALIDATE
, &data_blob_null
);
689 /* only messages to our pid or the broadcast are valid here */
690 if (msg
->srvid
!= getpid() && msg
->srvid
!= MSG_SRVID_SAMBA
) {
691 DEBUG(0,("Got unexpected message with srvid=%llu\n",
692 (unsigned long long)msg
->srvid
));
697 if (!(msg_rec
= ctdb_pull_messaging_rec(NULL
, length
, msg
))) {
698 DEBUG(10, ("ctdb_pull_messaging_rec failed\n"));
700 return NT_STATUS_NO_MEMORY
;
703 messaging_dispatch_rec(conn
->msg_ctx
, msg_rec
);
705 TALLOC_FREE(msg_rec
);
711 * The ctdbd socket is readable asynchronuously
714 static void ctdbd_socket_handler(struct tevent_context
*event_ctx
,
715 struct tevent_fd
*event
,
719 struct ctdbd_connection
*conn
= talloc_get_type_abort(
720 private_data
, struct ctdbd_connection
);
724 status
= ctdb_packet_fd_read(conn
->pkt
);
726 if (!NT_STATUS_IS_OK(status
)) {
727 DEBUG(0, ("packet_fd_read failed: %s\n", nt_errstr(status
)));
728 cluster_fatal("ctdbd died\n");
731 while (ctdb_packet_handler(conn
->pkt
, ctdb_req_complete
,
732 ctdb_handle_message
, conn
, &status
)) {
733 if (!NT_STATUS_IS_OK(status
)) {
734 DEBUG(10, ("could not handle incoming message: %s\n",
741 * Prepare a ctdbd connection to receive messages
744 NTSTATUS
ctdbd_register_msg_ctx(struct ctdbd_connection
*conn
,
745 struct messaging_context
*msg_ctx
)
747 SMB_ASSERT(conn
->msg_ctx
== NULL
);
748 SMB_ASSERT(conn
->fde
== NULL
);
750 if (!(conn
->fde
= tevent_add_fd(msg_ctx
->event_ctx
, conn
,
751 ctdb_packet_get_fd(conn
->pkt
),
753 ctdbd_socket_handler
,
755 DEBUG(0, ("event_add_fd failed\n"));
756 return NT_STATUS_NO_MEMORY
;
759 conn
->msg_ctx
= msg_ctx
;
765 * Send a messaging message across a ctdbd
768 NTSTATUS
ctdbd_messaging_send(struct ctdbd_connection
*conn
,
769 uint32_t dst_vnn
, uint64_t dst_srvid
,
770 struct messaging_rec
*msg
)
774 enum ndr_err_code ndr_err
;
776 ndr_err
= ndr_push_struct_blob(
777 &blob
, talloc_tos(), msg
,
778 (ndr_push_flags_fn_t
)ndr_push_messaging_rec
);
780 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
781 DEBUG(0, ("ndr_push_struct_blob failed: %s\n",
782 ndr_errstr(ndr_err
)));
783 return ndr_map_error2ntstatus(ndr_err
);
786 status
= ctdbd_messaging_send_blob(conn
, dst_vnn
, dst_srvid
,
787 blob
.data
, blob
.length
);
788 TALLOC_FREE(blob
.data
);
792 NTSTATUS
ctdbd_messaging_send_blob(struct ctdbd_connection
*conn
,
793 uint32_t dst_vnn
, uint64_t dst_srvid
,
794 const uint8_t *buf
, size_t buflen
)
796 struct ctdb_req_message r
;
799 r
.hdr
.length
= offsetof(struct ctdb_req_message
, data
) + buflen
;
800 r
.hdr
.ctdb_magic
= CTDB_MAGIC
;
801 r
.hdr
.ctdb_version
= CTDB_VERSION
;
802 r
.hdr
.generation
= 1;
803 r
.hdr
.operation
= CTDB_REQ_MESSAGE
;
804 r
.hdr
.destnode
= dst_vnn
;
805 r
.hdr
.srcnode
= conn
->our_vnn
;
810 DEBUG(10, ("ctdbd_messaging_send: Sending ctdb packet\n"));
811 ctdb_packet_dump(&r
.hdr
);
813 status
= ctdb_packet_send(
815 data_blob_const(&r
, offsetof(struct ctdb_req_message
, data
)),
816 data_blob_const(buf
, buflen
));
818 if (!NT_STATUS_IS_OK(status
)) {
819 DEBUG(0, ("ctdb_packet_send failed: %s\n", nt_errstr(status
)));
823 status
= ctdb_packet_flush(conn
->pkt
);
824 if (!NT_STATUS_IS_OK(status
)) {
825 DEBUG(3, ("write to ctdbd failed: %s\n", nt_errstr(status
)));
826 cluster_fatal("cluster dispatch daemon msg write error\n");
832 * send/recv a generic ctdb control message
834 static NTSTATUS
ctdbd_control(struct ctdbd_connection
*conn
,
835 uint32_t vnn
, uint32_t opcode
,
836 uint64_t srvid
, uint32_t flags
,
838 TALLOC_CTX
*mem_ctx
, TDB_DATA
*outdata
,
841 struct ctdb_req_control req
;
842 struct ctdb_reply_control
*reply
= NULL
;
843 struct ctdbd_connection
*new_conn
= NULL
;
847 status
= ctdbd_init_connection(NULL
, &new_conn
);
849 if (!NT_STATUS_IS_OK(status
)) {
850 DEBUG(10, ("Could not init temp connection: %s\n",
859 req
.hdr
.length
= offsetof(struct ctdb_req_control
, data
) + data
.dsize
;
860 req
.hdr
.ctdb_magic
= CTDB_MAGIC
;
861 req
.hdr
.ctdb_version
= CTDB_VERSION
;
862 req
.hdr
.operation
= CTDB_REQ_CONTROL
;
863 req
.hdr
.reqid
= ctdbd_next_reqid(conn
);
864 req
.hdr
.destnode
= vnn
;
867 req
.datalen
= data
.dsize
;
870 DEBUG(10, ("ctdbd_control: Sending ctdb packet\n"));
871 ctdb_packet_dump(&req
.hdr
);
873 status
= ctdb_packet_send(
875 data_blob_const(&req
, offsetof(struct ctdb_req_control
, data
)),
876 data_blob_const(data
.dptr
, data
.dsize
));
878 if (!NT_STATUS_IS_OK(status
)) {
879 DEBUG(3, ("ctdb_packet_send failed: %s\n", nt_errstr(status
)));
883 status
= ctdb_packet_flush(conn
->pkt
);
885 if (!NT_STATUS_IS_OK(status
)) {
886 DEBUG(3, ("write to ctdbd failed: %s\n", nt_errstr(status
)));
887 cluster_fatal("cluster dispatch daemon control write error\n");
890 if (flags
& CTDB_CTRL_FLAG_NOREPLY
) {
891 TALLOC_FREE(new_conn
);
898 status
= ctdb_read_req(conn
, req
.hdr
.reqid
, NULL
, (void *)&reply
);
900 if (!NT_STATUS_IS_OK(status
)) {
901 DEBUG(10, ("ctdb_read_req failed: %s\n", nt_errstr(status
)));
905 if (reply
->hdr
.operation
!= CTDB_REPLY_CONTROL
) {
906 DEBUG(0, ("received invalid reply\n"));
911 if (!(outdata
->dptr
= (uint8
*)talloc_memdup(
912 mem_ctx
, reply
->data
, reply
->datalen
))) {
914 return NT_STATUS_NO_MEMORY
;
916 outdata
->dsize
= reply
->datalen
;
919 (*cstatus
) = reply
->status
;
922 status
= NT_STATUS_OK
;
925 TALLOC_FREE(new_conn
);
931 * see if a remote process exists
933 bool ctdbd_process_exists(struct ctdbd_connection
*conn
, uint32_t vnn
, pid_t pid
)
941 if (!ctdb_processes_exist(conn
, &id
, 1, &result
)) {
942 DEBUG(10, ("ctdb_processes_exist failed\n"));
948 bool ctdb_processes_exist(struct ctdbd_connection
*conn
,
949 const struct server_id
*pids
, int num_pids
,
952 TALLOC_CTX
*frame
= talloc_stackframe();
958 reqids
= talloc_array(talloc_tos(), uint32_t, num_pids
);
959 if (reqids
== NULL
) {
963 for (i
=0; i
<num_pids
; i
++) {
964 struct ctdb_req_control req
;
968 reqids
[i
] = ctdbd_next_reqid(conn
);
973 * pids[i].pid is uint64_t, scale down to pid_t which
974 * is the wire protocol towards ctdb.
978 DEBUG(10, ("Requesting PID %d/%d, reqid=%d\n",
979 (int)pids
[i
].vnn
, (int)pid
,
982 req
.hdr
.length
= offsetof(struct ctdb_req_control
, data
);
983 req
.hdr
.length
+= sizeof(pid
);
984 req
.hdr
.ctdb_magic
= CTDB_MAGIC
;
985 req
.hdr
.ctdb_version
= CTDB_VERSION
;
986 req
.hdr
.operation
= CTDB_REQ_CONTROL
;
987 req
.hdr
.reqid
= reqids
[i
];
988 req
.hdr
.destnode
= pids
[i
].vnn
;
989 req
.opcode
= CTDB_CONTROL_PROCESS_EXISTS
;
991 req
.datalen
= sizeof(pid
);
994 DEBUG(10, ("ctdbd_control: Sending ctdb packet\n"));
995 ctdb_packet_dump(&req
.hdr
);
997 status
= ctdb_packet_send(
1000 &req
, offsetof(struct ctdb_req_control
, data
)),
1001 data_blob_const(&pid
, sizeof(pid
)));
1002 if (!NT_STATUS_IS_OK(status
)) {
1003 DEBUG(10, ("ctdb_packet_send failed: %s\n",
1004 nt_errstr(status
)));
1009 status
= ctdb_packet_flush(conn
->pkt
);
1010 if (!NT_STATUS_IS_OK(status
)) {
1011 DEBUG(10, ("ctdb_packet_flush failed: %s\n",
1012 nt_errstr(status
)));
1018 while (num_received
< num_pids
) {
1019 struct ctdb_reply_control
*reply
= NULL
;
1022 status
= ctdb_read_req(conn
, 0, talloc_tos(), (void *)&reply
);
1023 if (!NT_STATUS_IS_OK(status
)) {
1024 DEBUG(10, ("ctdb_read_req failed: %s\n",
1025 nt_errstr(status
)));
1029 if (reply
->hdr
.operation
!= CTDB_REPLY_CONTROL
) {
1030 DEBUG(10, ("Received invalid reply\n"));
1034 reqid
= reply
->hdr
.reqid
;
1036 DEBUG(10, ("Received reqid %d\n", (int)reqid
));
1038 for (i
=0; i
<num_pids
; i
++) {
1039 if (reqid
== reqids
[i
]) {
1043 if (i
== num_pids
) {
1044 DEBUG(10, ("Received unknown record number %u\n",
1048 results
[i
] = ((reply
->status
) == 0);
1059 struct ctdb_vnn_list
{
1062 unsigned num_srvids
;
1063 unsigned num_filled
;
1065 unsigned *pid_indexes
;
1069 * Get a list of all vnns mentioned in a list of
1070 * server_ids. vnn_indexes tells where in the vnns array we have to
1073 static bool ctdb_collect_vnns(TALLOC_CTX
*mem_ctx
,
1074 const struct server_id
*pids
, unsigned num_pids
,
1075 struct ctdb_vnn_list
**pvnns
,
1076 unsigned *pnum_vnns
)
1078 struct ctdb_vnn_list
*vnns
= NULL
;
1079 unsigned *vnn_indexes
= NULL
;
1080 unsigned i
, num_vnns
= 0;
1082 vnn_indexes
= talloc_array(mem_ctx
, unsigned, num_pids
);
1083 if (vnn_indexes
== NULL
) {
1084 DEBUG(1, ("talloc_array failed\n"));
1088 for (i
=0; i
<num_pids
; i
++) {
1090 uint32_t vnn
= pids
[i
].vnn
;
1092 for (j
=0; j
<num_vnns
; j
++) {
1093 if (vnn
== vnns
[j
].vnn
) {
1101 * Already in the array
1103 vnns
[j
].num_srvids
+= 1;
1106 vnns
= talloc_realloc(mem_ctx
, vnns
, struct ctdb_vnn_list
,
1109 DEBUG(1, ("talloc_realloc failed\n"));
1112 vnns
[num_vnns
].vnn
= vnn
;
1113 vnns
[num_vnns
].num_srvids
= 1;
1114 vnns
[num_vnns
].num_filled
= 0;
1117 for (i
=0; i
<num_vnns
; i
++) {
1118 struct ctdb_vnn_list
*vnn
= &vnns
[i
];
1120 vnn
->srvids
= talloc_array(vnns
, uint64_t, vnn
->num_srvids
);
1121 if (vnn
->srvids
== NULL
) {
1122 DEBUG(1, ("talloc_array failed\n"));
1125 vnn
->pid_indexes
= talloc_array(vnns
, unsigned,
1127 if (vnn
->pid_indexes
== NULL
) {
1128 DEBUG(1, ("talloc_array failed\n"));
1132 for (i
=0; i
<num_pids
; i
++) {
1133 struct ctdb_vnn_list
*vnn
= &vnns
[vnn_indexes
[i
]];
1134 vnn
->srvids
[vnn
->num_filled
] = pids
[i
].unique_id
;
1135 vnn
->pid_indexes
[vnn
->num_filled
] = i
;
1136 vnn
->num_filled
+= 1;
1139 TALLOC_FREE(vnn_indexes
);
1141 *pnum_vnns
= num_vnns
;
1145 TALLOC_FREE(vnn_indexes
);
1149 bool ctdb_serverids_exist_supported(struct ctdbd_connection
*conn
)
1151 #ifndef HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL
1153 #else /* HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL */
1155 #endif /* HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL */
1158 bool ctdb_serverids_exist(struct ctdbd_connection
*conn
,
1159 const struct server_id
*pids
, unsigned num_pids
,
1162 #ifndef HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL
1164 #else /* HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL */
1165 unsigned i
, num_received
;
1167 struct ctdb_vnn_list
*vnns
= NULL
;
1169 bool result
= false;
1171 if (!ctdb_collect_vnns(talloc_tos(), pids
, num_pids
,
1172 &vnns
, &num_vnns
)) {
1173 DEBUG(1, ("ctdb_collect_vnns failed\n"));
1177 for (i
=0; i
<num_vnns
; i
++) {
1178 struct ctdb_vnn_list
*vnn
= &vnns
[i
];
1179 struct ctdb_req_control req
;
1181 vnn
->reqid
= ctdbd_next_reqid(conn
);
1185 DEBUG(10, ("Requesting VNN %d, reqid=%d, num_srvids=%u\n",
1186 (int)vnn
->vnn
, (int)vnn
->reqid
, vnn
->num_srvids
));
1188 req
.hdr
.length
= offsetof(struct ctdb_req_control
, data
);
1189 req
.hdr
.ctdb_magic
= CTDB_MAGIC
;
1190 req
.hdr
.ctdb_version
= CTDB_VERSION
;
1191 req
.hdr
.operation
= CTDB_REQ_CONTROL
;
1192 req
.hdr
.reqid
= vnn
->reqid
;
1193 req
.hdr
.destnode
= vnn
->vnn
;
1194 req
.opcode
= CTDB_CONTROL_CHECK_SRVIDS
;
1196 req
.datalen
= sizeof(uint64_t) * vnn
->num_srvids
;
1197 req
.hdr
.length
+= req
.datalen
;
1200 DEBUG(10, ("ctdbd_control: Sending ctdb packet\n"));
1201 ctdb_packet_dump(&req
.hdr
);
1203 status
= ctdb_packet_send(
1206 &req
, offsetof(struct ctdb_req_control
,
1208 data_blob_const(vnn
->srvids
, req
.datalen
));
1209 if (!NT_STATUS_IS_OK(status
)) {
1210 DEBUG(1, ("ctdb_packet_send failed: %s\n",
1211 nt_errstr(status
)));
1216 status
= ctdb_packet_flush(conn
->pkt
);
1217 if (!NT_STATUS_IS_OK(status
)) {
1218 DEBUG(1, ("ctdb_packet_flush failed: %s\n",
1219 nt_errstr(status
)));
1225 while (num_received
< num_vnns
) {
1226 struct ctdb_reply_control
*reply
= NULL
;
1227 struct ctdb_vnn_list
*vnn
;
1229 uint8_t *reply_data
;
1231 status
= ctdb_read_req(conn
, 0, talloc_tos(), (void *)&reply
);
1232 if (!NT_STATUS_IS_OK(status
)) {
1233 DEBUG(1, ("ctdb_read_req failed: %s\n",
1234 nt_errstr(status
)));
1238 if (reply
->hdr
.operation
!= CTDB_REPLY_CONTROL
) {
1239 DEBUG(1, ("Received invalid reply %u\n",
1240 (unsigned)reply
->hdr
.operation
));
1244 reqid
= reply
->hdr
.reqid
;
1246 DEBUG(10, ("Received reqid %d\n", (int)reqid
));
1248 for (i
=0; i
<num_vnns
; i
++) {
1249 if (reqid
== vnns
[i
].reqid
) {
1253 if (i
== num_vnns
) {
1254 DEBUG(1, ("Received unknown reqid number %u\n",
1259 DEBUG(10, ("Found index %u\n", i
));
1263 DEBUG(10, ("Received vnn %u, vnn->num_srvids %u, datalen %u\n",
1264 (unsigned)vnn
->vnn
, vnn
->num_srvids
,
1265 (unsigned)reply
->datalen
));
1267 if (reply
->datalen
>= ((vnn
->num_srvids
+7)/8)) {
1271 reply_data
= reply
->data
;
1274 * Got an error reply
1276 DEBUG(5, ("Received short reply len %d, status %u, "
1278 (unsigned)reply
->datalen
,
1279 (unsigned)reply
->status
,
1280 (unsigned)reply
->errorlen
));
1281 dump_data(5, reply
->data
, reply
->errorlen
);
1284 * This will trigger everything set to false
1289 for (i
=0; i
<vnn
->num_srvids
; i
++) {
1290 int idx
= vnn
->pid_indexes
[i
];
1292 if (pids
[i
].unique_id
==
1293 SERVERID_UNIQUE_ID_NOT_TO_VERIFY
) {
1294 results
[idx
] = true;
1298 (reply_data
!= NULL
) &&
1299 ((reply_data
[i
/8] & (1<<(i
%8))) != 0);
1310 #endif /* HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL */
1316 char *ctdbd_dbpath(struct ctdbd_connection
*conn
,
1317 TALLOC_CTX
*mem_ctx
, uint32_t db_id
)
1323 data
.dptr
= (uint8_t*)&db_id
;
1324 data
.dsize
= sizeof(db_id
);
1326 status
= ctdbd_control(conn
, CTDB_CURRENT_NODE
,
1327 CTDB_CONTROL_GETDBPATH
, 0, 0, data
,
1328 mem_ctx
, &data
, &cstatus
);
1329 if (!NT_STATUS_IS_OK(status
) || cstatus
!= 0) {
1330 DEBUG(0,(__location__
" ctdb_control for getdbpath failed\n"));
1334 return (char *)data
.dptr
;
1338 * attach to a ctdb database
1340 NTSTATUS
ctdbd_db_attach(struct ctdbd_connection
*conn
,
1341 const char *name
, uint32_t *db_id
, int tdb_flags
)
1346 bool persistent
= (tdb_flags
& TDB_CLEAR_IF_FIRST
) == 0;
1348 data
= string_term_tdb_data(name
);
1350 status
= ctdbd_control(conn
, CTDB_CURRENT_NODE
,
1352 ? CTDB_CONTROL_DB_ATTACH_PERSISTENT
1353 : CTDB_CONTROL_DB_ATTACH
,
1354 tdb_flags
, 0, data
, NULL
, &data
, &cstatus
);
1355 if (!NT_STATUS_IS_OK(status
)) {
1356 DEBUG(0, (__location__
" ctdb_control for db_attach "
1357 "failed: %s\n", nt_errstr(status
)));
1361 if (cstatus
!= 0 || data
.dsize
!= sizeof(uint32_t)) {
1362 DEBUG(0,(__location__
" ctdb_control for db_attach failed\n"));
1363 return NT_STATUS_INTERNAL_ERROR
;
1366 *db_id
= *(uint32_t *)data
.dptr
;
1367 talloc_free(data
.dptr
);
1369 if (!(tdb_flags
& TDB_SEQNUM
)) {
1370 return NT_STATUS_OK
;
1373 data
.dptr
= (uint8_t *)db_id
;
1374 data
.dsize
= sizeof(*db_id
);
1376 status
= ctdbd_control(conn
, CTDB_CURRENT_NODE
,
1377 CTDB_CONTROL_ENABLE_SEQNUM
, 0, 0, data
,
1378 NULL
, NULL
, &cstatus
);
1379 if (!NT_STATUS_IS_OK(status
) || cstatus
!= 0) {
1380 DEBUG(0,(__location__
" ctdb_control for enable seqnum "
1382 return NT_STATUS_IS_OK(status
) ? NT_STATUS_INTERNAL_ERROR
:
1386 return NT_STATUS_OK
;
1390 * force the migration of a record to this node
1392 NTSTATUS
ctdbd_migrate(struct ctdbd_connection
*conn
, uint32_t db_id
,
1395 struct ctdb_req_call req
;
1396 struct ctdb_reply_call
*reply
;
1401 req
.hdr
.length
= offsetof(struct ctdb_req_call
, data
) + key
.dsize
;
1402 req
.hdr
.ctdb_magic
= CTDB_MAGIC
;
1403 req
.hdr
.ctdb_version
= CTDB_VERSION
;
1404 req
.hdr
.operation
= CTDB_REQ_CALL
;
1405 req
.hdr
.reqid
= ctdbd_next_reqid(conn
);
1406 req
.flags
= CTDB_IMMEDIATE_MIGRATION
;
1407 req
.callid
= CTDB_NULL_FUNC
;
1409 req
.keylen
= key
.dsize
;
1411 DEBUG(10, ("ctdbd_migrate: Sending ctdb packet\n"));
1412 ctdb_packet_dump(&req
.hdr
);
1414 status
= ctdb_packet_send(
1416 data_blob_const(&req
, offsetof(struct ctdb_req_call
, data
)),
1417 data_blob_const(key
.dptr
, key
.dsize
));
1419 if (!NT_STATUS_IS_OK(status
)) {
1420 DEBUG(3, ("ctdb_packet_send failed: %s\n", nt_errstr(status
)));
1424 status
= ctdb_packet_flush(conn
->pkt
);
1426 if (!NT_STATUS_IS_OK(status
)) {
1427 DEBUG(3, ("write to ctdbd failed: %s\n", nt_errstr(status
)));
1428 cluster_fatal("cluster dispatch daemon control write error\n");
1431 status
= ctdb_read_req(conn
, req
.hdr
.reqid
, NULL
, (void *)&reply
);
1433 if (!NT_STATUS_IS_OK(status
)) {
1434 DEBUG(0, ("ctdb_read_req failed: %s\n", nt_errstr(status
)));
1438 if (reply
->hdr
.operation
!= CTDB_REPLY_CALL
) {
1439 DEBUG(0, ("received invalid reply\n"));
1440 status
= NT_STATUS_INTERNAL_ERROR
;
1444 status
= NT_STATUS_OK
;
1452 * Fetch a record and parse it
1454 NTSTATUS
ctdbd_parse(struct ctdbd_connection
*conn
, uint32_t db_id
,
1455 TDB_DATA key
, bool local_copy
,
1456 void (*parser
)(TDB_DATA key
, TDB_DATA data
,
1457 void *private_data
),
1460 struct ctdb_req_call req
;
1461 struct ctdb_reply_call
*reply
;
1465 #ifdef HAVE_CTDB_WANT_READONLY_DECL
1466 flags
= local_copy
? CTDB_WANT_READONLY
: 0;
1473 req
.hdr
.length
= offsetof(struct ctdb_req_call
, data
) + key
.dsize
;
1474 req
.hdr
.ctdb_magic
= CTDB_MAGIC
;
1475 req
.hdr
.ctdb_version
= CTDB_VERSION
;
1476 req
.hdr
.operation
= CTDB_REQ_CALL
;
1477 req
.hdr
.reqid
= ctdbd_next_reqid(conn
);
1479 req
.callid
= CTDB_FETCH_FUNC
;
1481 req
.keylen
= key
.dsize
;
1483 status
= ctdb_packet_send(
1485 data_blob_const(&req
, offsetof(struct ctdb_req_call
, data
)),
1486 data_blob_const(key
.dptr
, key
.dsize
));
1488 if (!NT_STATUS_IS_OK(status
)) {
1489 DEBUG(3, ("ctdb_packet_send failed: %s\n", nt_errstr(status
)));
1493 status
= ctdb_packet_flush(conn
->pkt
);
1495 if (!NT_STATUS_IS_OK(status
)) {
1496 DEBUG(3, ("write to ctdbd failed: %s\n", nt_errstr(status
)));
1497 cluster_fatal("cluster dispatch daemon control write error\n");
1500 status
= ctdb_read_req(conn
, req
.hdr
.reqid
, NULL
, (void *)&reply
);
1502 if (!NT_STATUS_IS_OK(status
)) {
1503 DEBUG(0, ("ctdb_read_req failed: %s\n", nt_errstr(status
)));
1507 if (reply
->hdr
.operation
!= CTDB_REPLY_CALL
) {
1508 DEBUG(0, ("received invalid reply\n"));
1509 status
= NT_STATUS_INTERNAL_ERROR
;
1513 if (reply
->datalen
== 0) {
1515 * Treat an empty record as non-existing
1517 status
= NT_STATUS_NOT_FOUND
;
1521 parser(key
, make_tdb_data(&reply
->data
[0], reply
->datalen
),
1524 status
= NT_STATUS_OK
;
1530 struct ctdbd_traverse_state
{
1531 void (*fn
)(TDB_DATA key
, TDB_DATA data
, void *private_data
);
1536 * Handle a traverse record coming in on the ctdbd connection
1539 static NTSTATUS
ctdb_traverse_handler(uint8_t *buf
, size_t length
,
1542 struct ctdbd_traverse_state
*state
=
1543 (struct ctdbd_traverse_state
*)private_data
;
1545 struct ctdb_req_message
*m
;
1546 struct ctdb_rec_data
*d
;
1549 m
= (struct ctdb_req_message
*)buf
;
1551 if (length
< sizeof(*m
) || m
->hdr
.length
!= length
) {
1552 DEBUG(0, ("Got invalid message of length %d\n", (int)length
));
1554 return NT_STATUS_UNEXPECTED_IO_ERROR
;
1557 d
= (struct ctdb_rec_data
*)&m
->data
[0];
1558 if (m
->datalen
< sizeof(uint32_t) || m
->datalen
!= d
->length
) {
1559 DEBUG(0, ("Got invalid traverse data of length %d\n",
1562 return NT_STATUS_UNEXPECTED_IO_ERROR
;
1565 key
.dsize
= d
->keylen
;
1566 key
.dptr
= &d
->data
[0];
1567 data
.dsize
= d
->datalen
;
1568 data
.dptr
= &d
->data
[d
->keylen
];
1570 if (key
.dsize
== 0 && data
.dsize
== 0) {
1571 /* end of traverse */
1572 return NT_STATUS_END_OF_FILE
;
1575 if (data
.dsize
< sizeof(struct ctdb_ltdb_header
)) {
1576 DEBUG(0, ("Got invalid ltdb header length %d\n",
1579 return NT_STATUS_UNEXPECTED_IO_ERROR
;
1581 data
.dsize
-= sizeof(struct ctdb_ltdb_header
);
1582 data
.dptr
+= sizeof(struct ctdb_ltdb_header
);
1585 state
->fn(key
, data
, state
->private_data
);
1589 return NT_STATUS_OK
;
1593 Traverse a ctdb database. This uses a kind-of hackish way to open a second
1594 connection to ctdbd to avoid the hairy recursive and async problems with
1598 NTSTATUS
ctdbd_traverse(uint32_t db_id
,
1599 void (*fn
)(TDB_DATA key
, TDB_DATA data
,
1600 void *private_data
),
1603 struct ctdbd_connection
*conn
;
1607 struct ctdb_traverse_start t
;
1609 struct ctdbd_traverse_state state
;
1612 status
= ctdbd_init_connection(NULL
, &conn
);
1614 if (!NT_STATUS_IS_OK(status
)) {
1615 DEBUG(0, ("ctdbd_init_connection failed: %s\n",
1616 nt_errstr(status
)));
1621 t
.srvid
= conn
->rand_srvid
;
1622 t
.reqid
= ctdbd_next_reqid(conn
);
1624 data
.dptr
= (uint8_t *)&t
;
1625 data
.dsize
= sizeof(t
);
1627 status
= ctdbd_control(conn
, CTDB_CURRENT_NODE
,
1628 CTDB_CONTROL_TRAVERSE_START
, conn
->rand_srvid
, 0,
1629 data
, NULL
, NULL
, &cstatus
);
1631 if (!NT_STATUS_IS_OK(status
) || (cstatus
!= 0)) {
1633 DEBUG(0,("ctdbd_control failed: %s, %d\n", nt_errstr(status
),
1636 if (NT_STATUS_IS_OK(status
)) {
1638 * We need a mapping here
1640 status
= NT_STATUS_UNSUCCESSFUL
;
1646 state
.private_data
= private_data
;
1650 status
= NT_STATUS_OK
;
1652 if (ctdb_packet_handler(conn
->pkt
, ctdb_req_complete
,
1653 ctdb_traverse_handler
, &state
, &status
)) {
1655 if (NT_STATUS_EQUAL(status
, NT_STATUS_END_OF_FILE
)) {
1656 status
= NT_STATUS_OK
;
1661 * There might be more in the queue
1666 if (!NT_STATUS_IS_OK(status
)) {
1670 status
= ctdb_packet_fd_read_sync(conn
->pkt
);
1672 if (NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1674 * There might be more in the queue
1679 if (NT_STATUS_EQUAL(status
, NT_STATUS_END_OF_FILE
)) {
1680 status
= NT_STATUS_OK
;
1684 if (!NT_STATUS_IS_OK(status
)) {
1685 DEBUG(0, ("ctdb_packet_fd_read_sync failed: %s\n", nt_errstr(status
)));
1686 cluster_fatal("ctdbd died\n");
1696 This is used to canonicalize a ctdb_sock_addr structure.
1698 static void smbd_ctdb_canonicalize_ip(const struct sockaddr_storage
*in
,
1699 struct sockaddr_storage
*out
)
1701 memcpy(out
, in
, sizeof (*out
));
1704 if (in
->ss_family
== AF_INET6
) {
1705 const char prefix
[12] = { 0,0,0,0,0,0,0,0,0,0,0xff,0xff };
1706 const struct sockaddr_in6
*in6
=
1707 (const struct sockaddr_in6
*)in
;
1708 struct sockaddr_in
*out4
= (struct sockaddr_in
*)out
;
1709 if (memcmp(&in6
->sin6_addr
, prefix
, 12) == 0) {
1710 memset(out
, 0, sizeof(*out
));
1711 #ifdef HAVE_SOCK_SIN_LEN
1712 out4
->sin_len
= sizeof(*out
);
1714 out4
->sin_family
= AF_INET
;
1715 out4
->sin_port
= in6
->sin6_port
;
1716 memcpy(&out4
->sin_addr
, &in6
->sin6_addr
.s6_addr
[12], 4);
1723 * Register us as a server for a particular tcp connection
1726 NTSTATUS
ctdbd_register_ips(struct ctdbd_connection
*conn
,
1727 const struct sockaddr_storage
*_server
,
1728 const struct sockaddr_storage
*_client
,
1729 bool (*release_ip_handler
)(const char *ip_addr
,
1730 void *private_data
),
1734 * we still use ctdb_control_tcp for ipv4
1735 * because we want to work against older ctdb
1736 * versions at runtime
1738 struct ctdb_control_tcp p4
;
1739 #ifdef HAVE_STRUCT_CTDB_CONTROL_TCP_ADDR
1740 struct ctdb_control_tcp_addr p
;
1744 struct sockaddr_storage client
;
1745 struct sockaddr_storage server
;
1748 * Only one connection so far
1750 SMB_ASSERT(conn
->release_ip_handler
== NULL
);
1752 smbd_ctdb_canonicalize_ip(_client
, &client
);
1753 smbd_ctdb_canonicalize_ip(_server
, &server
);
1755 switch (client
.ss_family
) {
1757 memcpy(&p4
.dest
, &server
, sizeof(p4
.dest
));
1758 memcpy(&p4
.src
, &client
, sizeof(p4
.src
));
1759 data
.dptr
= (uint8_t *)&p4
;
1760 data
.dsize
= sizeof(p4
);
1762 #ifdef HAVE_STRUCT_CTDB_CONTROL_TCP_ADDR
1764 memcpy(&p
.dest
.ip6
, &server
, sizeof(p
.dest
.ip6
));
1765 memcpy(&p
.src
.ip6
, &client
, sizeof(p
.src
.ip6
));
1766 data
.dptr
= (uint8_t *)&p
;
1767 data
.dsize
= sizeof(p
);
1771 return NT_STATUS_INTERNAL_ERROR
;
1774 conn
->release_ip_handler
= release_ip_handler
;
1775 conn
->release_ip_priv
= private_data
;
1778 * We want to be told about IP releases
1781 status
= register_with_ctdbd(conn
, CTDB_SRVID_RELEASE_IP
);
1782 if (!NT_STATUS_IS_OK(status
)) {
1787 * inform ctdb of our tcp connection, so if IP takeover happens ctdb
1788 * can send an extra ack to trigger a reset for our client, so it
1789 * immediately reconnects
1791 return ctdbd_control(conn
, CTDB_CURRENT_NODE
,
1792 CTDB_CONTROL_TCP_CLIENT
, 0,
1793 CTDB_CTRL_FLAG_NOREPLY
, data
, NULL
, NULL
, NULL
);
1797 * We want to handle reconfigure events
1799 NTSTATUS
ctdbd_register_reconfigure(struct ctdbd_connection
*conn
)
1801 return register_with_ctdbd(conn
, CTDB_SRVID_RECONFIGURE
);
1805 call a control on the local node
1807 NTSTATUS
ctdbd_control_local(struct ctdbd_connection
*conn
, uint32_t opcode
,
1808 uint64_t srvid
, uint32_t flags
, TDB_DATA data
,
1809 TALLOC_CTX
*mem_ctx
, TDB_DATA
*outdata
,
1812 return ctdbd_control(conn
, CTDB_CURRENT_NODE
, opcode
, srvid
, flags
, data
, mem_ctx
, outdata
, cstatus
);
1815 NTSTATUS
ctdb_watch_us(struct ctdbd_connection
*conn
)
1817 struct ctdb_client_notify_register reg_data
;
1822 reg_data
.srvid
= CTDB_SRVID_SAMBA_NOTIFY
;
1824 reg_data
.notify_data
[0] = 0;
1826 struct_len
= offsetof(struct ctdb_client_notify_register
,
1827 notify_data
) + reg_data
.len
;
1829 status
= ctdbd_control_local(
1830 conn
, CTDB_CONTROL_REGISTER_NOTIFY
, conn
->rand_srvid
, 0,
1831 make_tdb_data((uint8_t *)®_data
, struct_len
),
1832 NULL
, NULL
, &cstatus
);
1833 if (!NT_STATUS_IS_OK(status
)) {
1834 DEBUG(1, ("ctdbd_control_local failed: %s\n",
1835 nt_errstr(status
)));
1840 NTSTATUS
ctdb_unwatch(struct ctdbd_connection
*conn
)
1842 struct ctdb_client_notify_deregister dereg_data
;
1846 dereg_data
.srvid
= CTDB_SRVID_SAMBA_NOTIFY
;
1848 status
= ctdbd_control_local(
1849 conn
, CTDB_CONTROL_DEREGISTER_NOTIFY
, conn
->rand_srvid
, 0,
1850 make_tdb_data((uint8_t *)&dereg_data
, sizeof(dereg_data
)),
1851 NULL
, NULL
, &cstatus
);
1852 if (!NT_STATUS_IS_OK(status
)) {
1853 DEBUG(1, ("ctdbd_control_local failed: %s\n",
1854 nt_errstr(status
)));
1859 NTSTATUS
ctdbd_probe(void)
1862 * Do a very early check if ctdbd is around to avoid an abort and core
1865 struct ctdbd_connection
*conn
= NULL
;
1868 status
= ctdbd_messaging_connection(talloc_tos(), &conn
);
1871 * We only care if we can connect.