2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1998 - 2001
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #define DBGC_CLASS DBGC_LOCKING
24 #include "smbd/smbd.h"
25 #include "smbd/globals.h"
27 #include "../librpc/gen_ndr/open_files.h"
30 * helper function used by the kernel oplock backends to post the break message
32 void break_kernel_oplock(struct messaging_context *msg_ctx, files_struct *fsp)
34 uint8_t msg[MSG_SMB_KERNEL_BREAK_SIZE];
36 /* Put the kernel break info into the message. */
37 push_file_id_24((char *)msg, &fsp->file_id);
38 SIVAL(msg,24,fsp->fh->gen_id);
40 /* Don't need to be root here as we're only ever
41 sending to ourselves. */
43 messaging_send_buf(msg_ctx, messaging_server_id(msg_ctx),
45 msg, MSG_SMB_KERNEL_BREAK_SIZE);
48 /****************************************************************************
49 Attempt to set an oplock on a file. Succeeds if kernel oplocks are
50 disabled (just sets flags).
51 ****************************************************************************/
53 NTSTATUS set_file_oplock(files_struct *fsp)
55 struct smbd_server_connection *sconn = fsp->conn->sconn;
56 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
57 bool use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;
59 if (fsp->oplock_type == LEVEL_II_OPLOCK) {
61 !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) {
62 DEBUG(10, ("Refusing level2 oplock, kernel oplocks "
63 "don't support them\n"));
64 return NT_STATUS_NOT_SUPPORTED;
68 if ((fsp->oplock_type != NO_OPLOCK) &&
70 !koplocks->ops->set_oplock(koplocks, fsp, fsp->oplock_type))
72 return map_nt_error_from_unix(errno);
75 fsp->sent_oplock_break = NO_BREAK_SENT;
76 if (fsp->oplock_type == LEVEL_II_OPLOCK) {
77 sconn->oplocks.level_II_open++;
78 } else if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
79 sconn->oplocks.exclusive_open++;
82 DEBUG(5,("set_file_oplock: granted oplock on file %s, %s/%lu, "
83 "tv_sec = %x, tv_usec = %x\n",
84 fsp_str_dbg(fsp), file_id_string_tos(&fsp->file_id),
85 fsp->fh->gen_id, (int)fsp->open_time.tv_sec,
86 (int)fsp->open_time.tv_usec ));
91 /****************************************************************************
92 Attempt to release an oplock on a file. Decrements oplock count.
93 ****************************************************************************/
95 static void release_file_oplock(files_struct *fsp)
97 struct smbd_server_connection *sconn = fsp->conn->sconn;
98 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
100 if ((fsp->oplock_type != NO_OPLOCK) &&
102 koplocks->ops->release_oplock(koplocks, fsp, NO_OPLOCK);
105 if (fsp->oplock_type == LEVEL_II_OPLOCK) {
106 sconn->oplocks.level_II_open--;
107 } else if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
108 sconn->oplocks.exclusive_open--;
111 SMB_ASSERT(sconn->oplocks.exclusive_open>=0);
112 SMB_ASSERT(sconn->oplocks.level_II_open>=0);
114 fsp->oplock_type = NO_OPLOCK;
115 fsp->sent_oplock_break = NO_BREAK_SENT;
117 flush_write_cache(fsp, SAMBA_OPLOCK_RELEASE_FLUSH);
118 delete_write_cache(fsp);
120 TALLOC_FREE(fsp->oplock_timeout);
123 /****************************************************************************
124 Attempt to downgrade an oplock on a file. Doesn't decrement oplock count.
125 ****************************************************************************/
127 static void downgrade_file_oplock(files_struct *fsp)
129 struct smbd_server_connection *sconn = fsp->conn->sconn;
130 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
132 if (!EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
133 DEBUG(0, ("trying to downgrade an already-downgraded oplock!\n"));
138 koplocks->ops->release_oplock(koplocks, fsp, LEVEL_II_OPLOCK);
140 fsp->oplock_type = LEVEL_II_OPLOCK;
141 sconn->oplocks.exclusive_open--;
142 sconn->oplocks.level_II_open++;
143 fsp->sent_oplock_break = NO_BREAK_SENT;
145 flush_write_cache(fsp, SAMBA_OPLOCK_RELEASE_FLUSH);
146 delete_write_cache(fsp);
148 TALLOC_FREE(fsp->oplock_timeout);
151 /****************************************************************************
152 Remove a file oplock. Copes with level II and exclusive.
153 Locks then unlocks the share mode lock. Client can decide to go directly
154 to none even if a "break-to-level II" was sent.
155 ****************************************************************************/
157 bool remove_oplock(files_struct *fsp)
160 struct share_mode_lock *lck;
162 DEBUG(10, ("remove_oplock called for %s\n",
165 /* Remove the oplock flag from the sharemode. */
166 lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
168 DEBUG(0,("remove_oplock: failed to lock share entry for "
169 "file %s\n", fsp_str_dbg(fsp)));
173 if (fsp->oplock_type == LEVEL_II_OPLOCK) {
176 * If we're the only LEVEL_II holder, we have to remove the
177 * have_read_oplocks from the brlock entry
180 struct share_mode_data *data = lck->data;
181 uint32_t i, num_level2;
184 for (i=0; i<data->num_share_modes; i++) {
185 if (data->share_modes[i].op_type == LEVEL_II_OPLOCK) {
188 if (num_level2 > 1) {
190 * No need to count them all...
196 if (num_level2 == 1) {
198 * That's only us. We are dropping that level2 oplock,
199 * so remove the brlock flag.
201 struct byte_range_lock *brl;
203 brl = brl_get_locks(talloc_tos(), fsp);
205 brl_set_have_read_oplocks(brl, false);
211 ret = remove_share_oplock(lck, fsp);
213 DEBUG(0,("remove_oplock: failed to remove share oplock for "
215 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
216 file_id_string_tos(&fsp->file_id)));
218 release_file_oplock(fsp);
224 * Deal with a reply when a break-to-level II was sent.
226 bool downgrade_oplock(files_struct *fsp)
229 struct share_mode_lock *lck;
230 struct byte_range_lock *brl;
232 DEBUG(10, ("downgrade_oplock called for %s\n",
235 lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
237 DEBUG(0,("downgrade_oplock: failed to lock share entry for "
238 "file %s\n", fsp_str_dbg(fsp)));
241 ret = downgrade_share_oplock(lck, fsp);
243 DEBUG(0,("downgrade_oplock: failed to downgrade share oplock "
244 "for file %s, %s, file_id %s\n",
245 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp),
246 file_id_string_tos(&fsp->file_id)));
249 downgrade_file_oplock(fsp);
251 brl = brl_get_locks(talloc_tos(), fsp);
253 brl_set_have_read_oplocks(brl, true);
261 /****************************************************************************
262 Set up an oplock break message.
263 ****************************************************************************/
265 #define SMB1_BREAK_MESSAGE_LENGTH (smb_size + 8*2)
267 static void new_break_message_smb1(files_struct *fsp, int cmd,
268 char result[SMB1_BREAK_MESSAGE_LENGTH])
270 memset(result,'\0',smb_size);
271 srv_set_message(result,8,0,true);
272 SCVAL(result,smb_com,SMBlockingX);
273 SSVAL(result,smb_tid,fsp->conn->cnum);
274 SSVAL(result,smb_pid,0xFFFF);
275 SSVAL(result,smb_uid,0);
276 SSVAL(result,smb_mid,0xFFFF);
277 SCVAL(result,smb_vwv0,0xFF);
278 SSVAL(result,smb_vwv2,fsp->fnum);
279 SCVAL(result,smb_vwv3,LOCKING_ANDX_OPLOCK_RELEASE);
280 SCVAL(result,smb_vwv3+1,cmd);
283 /****************************************************************************
284 Function to do the waiting before sending a local break.
285 ****************************************************************************/
287 static void wait_before_sending_break(void)
289 long wait_time = (long)lp_oplock_break_wait_time();
292 smb_msleep(wait_time);
296 /****************************************************************************
297 Ensure that we have a valid oplock.
298 ****************************************************************************/
300 static files_struct *initial_break_processing(
301 struct smbd_server_connection *sconn, struct file_id id,
302 unsigned long file_id)
304 files_struct *fsp = NULL;
306 DEBUG(3, ("initial_break_processing: called for %s/%u\n"
307 "Current oplocks_open (exclusive = %d, levelII = %d)\n",
308 file_id_string_tos(&id), (int)file_id,
309 sconn->oplocks.exclusive_open,
310 sconn->oplocks.level_II_open));
313 * We need to search the file open table for the
314 * entry containing this dev and inode, and ensure
315 * we have an oplock on it.
318 fsp = file_find_dif(sconn, id, file_id);
321 /* The file could have been closed in the meantime - return success. */
322 DEBUG(3, ("initial_break_processing: cannot find open file "
323 "with file_id %s gen_id = %lu, allowing break to "
324 "succeed.\n", file_id_string_tos(&id), file_id));
328 /* Ensure we have an oplock on the file */
331 * There is a potential race condition in that an oplock could
332 * have been broken due to another udp request, and yet there are
333 * still oplock break messages being sent in the udp message
334 * queue for this file. So return true if we don't have an oplock,
335 * as we may have just freed it.
338 if(fsp->oplock_type == NO_OPLOCK) {
339 DEBUG(3, ("initial_break_processing: file %s (file_id = %s "
340 "gen_id = %lu) has no oplock. Allowing break to "
341 "succeed regardless.\n", fsp_str_dbg(fsp),
342 file_id_string_tos(&id), fsp->fh->gen_id));
349 static void oplock_timeout_handler(struct tevent_context *ctx,
350 struct tevent_timer *te,
354 files_struct *fsp = (files_struct *)private_data;
356 SMB_ASSERT(fsp->sent_oplock_break != NO_BREAK_SENT);
358 /* Remove the timed event handler. */
359 TALLOC_FREE(fsp->oplock_timeout);
360 DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n",
365 /*******************************************************************
366 Add a timeout handler waiting for the client reply.
367 *******************************************************************/
369 static void add_oplock_timeout_handler(files_struct *fsp)
371 struct smbd_server_connection *sconn = fsp->conn->sconn;
372 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
375 * If kernel oplocks already notifies smbds when an oplock break times
379 (koplocks->flags & KOPLOCKS_TIMEOUT_NOTIFICATION)) {
383 if (fsp->oplock_timeout != NULL) {
384 DEBUG(0, ("Logic problem -- have an oplock event hanging "
388 fsp->oplock_timeout =
389 tevent_add_timer(fsp->conn->sconn->ev_ctx, fsp,
390 timeval_current_ofs(OPLOCK_BREAK_TIMEOUT, 0),
391 oplock_timeout_handler, fsp);
393 if (fsp->oplock_timeout == NULL) {
394 DEBUG(0, ("Could not add oplock timeout handler\n"));
398 static void send_break_message_smb1(files_struct *fsp, int level)
400 struct smbXsrv_connection *xconn = NULL;
401 char break_msg[SMB1_BREAK_MESSAGE_LENGTH];
404 * For SMB1 we only have one connection
406 xconn = fsp->conn->sconn->client->connections;
408 new_break_message_smb1(fsp, level, break_msg);
411 if (!srv_send_smb(xconn,
413 IS_CONN_ENCRYPTED(fsp->conn),
415 exit_server_cleanly("send_break_message_smb1: "
416 "srv_send_smb failed.");
420 /*******************************************************************
421 This handles the generic oplock break message from another smbd.
422 *******************************************************************/
424 static void process_oplock_break_message(struct messaging_context *msg_ctx,
427 struct server_id src,
430 struct share_mode_entry msg;
432 bool break_to_level2 = False;
434 struct smbd_server_connection *sconn =
435 talloc_get_type_abort(private_data,
436 struct smbd_server_connection);
437 struct server_id self = messaging_server_id(sconn->msg_ctx);
438 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
441 if (data->data == NULL) {
442 DEBUG(0, ("Got NULL buffer\n"));
446 if (data->length != MSG_SMB_SHARE_MODE_ENTRY_SIZE) {
447 DEBUG(0, ("Got invalid msg len %d\n", (int)data->length));
451 /* De-linearize incoming message. */
452 message_to_share_mode_entry(&msg, (char *)data->data);
453 break_to = msg.op_type;
455 DEBUG(10, ("Got oplock break to %u message from pid %s: %s/%llu\n",
456 (unsigned)break_to, server_id_str(talloc_tos(), &src),
457 file_id_string_tos(&msg.id),
458 (unsigned long long)msg.share_file_id));
460 fsp = initial_break_processing(sconn, msg.id, msg.share_file_id);
463 /* We hit a race here. Break messages are sent, and before we
464 * get to process this message, we have closed the file. */
465 DEBUG(3, ("Did not find fsp\n"));
469 if (fsp->sent_oplock_break != NO_BREAK_SENT) {
471 * Nothing to do anymore
476 if (break_to == fsp->oplock_type) {
477 DEBUG(3, ("Already downgraded oplock on %s: %s\n",
478 file_id_string_tos(&fsp->file_id),
483 use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;
485 if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
486 (break_to != NO_OPLOCK) &&
487 !(use_kernel && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) &&
488 lp_level2_oplocks(SNUM(fsp->conn))) {
489 break_to_level2 = True;
492 /* Need to wait before sending a break
493 message if we sent ourselves this message. */
494 if (serverid_equal(&self, &src)) {
495 wait_before_sending_break();
498 if (sconn->using_smb2) {
499 send_break_message_smb2(fsp, break_to_level2 ?
500 OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
502 send_break_message_smb1(fsp, break_to_level2 ?
503 OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
506 if ((fsp->oplock_type == LEVEL_II_OPLOCK) && (break_to == NO_OPLOCK)) {
508 * This is an async break without a reply and thus no timeout
513 fsp->sent_oplock_break = break_to_level2 ? LEVEL_II_BREAK_SENT:BREAK_TO_NONE_SENT;
514 add_oplock_timeout_handler(fsp);
517 /*******************************************************************
518 This handles the kernel oplock break message.
519 *******************************************************************/
521 static void process_kernel_oplock_break(struct messaging_context *msg_ctx,
524 struct server_id src,
528 unsigned long file_id;
530 struct smbd_server_connection *sconn =
531 talloc_get_type_abort(private_data,
532 struct smbd_server_connection);
534 if (data->data == NULL) {
535 DEBUG(0, ("Got NULL buffer\n"));
539 if (data->length != MSG_SMB_KERNEL_BREAK_SIZE) {
540 DEBUG(0, ("Got invalid msg len %d\n", (int)data->length));
544 /* Pull the data from the message. */
545 pull_file_id_24((char *)data->data, &id);
546 file_id = (unsigned long)IVAL(data->data, 24);
548 DEBUG(10, ("Got kernel oplock break message from pid %s: %s/%u\n",
549 server_id_str(talloc_tos(), &src), file_id_string_tos(&id),
550 (unsigned int)file_id));
552 fsp = initial_break_processing(sconn, id, file_id);
555 DEBUG(3, ("Got a kernel oplock break message for a file "
556 "I don't know about\n"));
560 if (fsp->sent_oplock_break != NO_BREAK_SENT) {
561 /* This is ok, kernel oplocks come in completely async */
562 DEBUG(3, ("Got a kernel oplock request while waiting for a "
567 if (sconn->using_smb2) {
568 send_break_message_smb2(fsp, OPLOCKLEVEL_NONE);
570 send_break_message_smb1(fsp, OPLOCKLEVEL_NONE);
573 fsp->sent_oplock_break = BREAK_TO_NONE_SENT;
575 add_oplock_timeout_handler(fsp);
578 struct break_to_none_state {
579 struct smbd_server_connection *sconn;
582 static void do_break_to_none(struct tevent_context *ctx,
583 struct tevent_immediate *im,
586 /****************************************************************************
587 This function is called on any file modification or lock request. If a file
588 is level 2 oplocked then it must tell all other level 2 holders to break to
590 ****************************************************************************/
592 static void contend_level2_oplocks_begin_default(files_struct *fsp,
593 enum level2_contention_type type)
595 struct smbd_server_connection *sconn = fsp->conn->sconn;
596 struct tevent_immediate *im;
597 struct break_to_none_state *state;
598 struct byte_range_lock *brl;
601 * If this file is level II oplocked then we need
602 * to grab the shared memory lock and inform all
603 * other files with a level II lock that they need
604 * to flush their read caches. We keep the lock over
605 * the shared memory area whilst doing this.
608 if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
610 * There can't be any level2 oplocks, we're alone.
615 brl = brl_get_locks_readonly(fsp);
616 if ((brl != NULL) && !brl_have_read_oplocks(brl)) {
617 DEBUG(10, ("No read oplocks around\n"));
622 * When we get here we might have a brlock entry locked. Also
623 * locking the share mode entry would violate the locking
624 * order. Breaking level2 oplocks to none is asynchronous
625 * anyway, so we postpone this into an immediate event.
628 state = talloc(sconn, struct break_to_none_state);
630 DEBUG(1, ("talloc failed\n"));
633 state->sconn = sconn;
634 state->id = fsp->file_id;
636 im = tevent_create_immediate(state);
638 DEBUG(1, ("tevent_create_immediate failed\n"));
642 tevent_schedule_immediate(im, sconn->ev_ctx, do_break_to_none, state);
645 static void do_break_to_none(struct tevent_context *ctx,
646 struct tevent_immediate *im,
649 struct break_to_none_state *state = talloc_get_type_abort(
650 private_data, struct break_to_none_state);
652 struct share_mode_lock *lck;
654 lck = get_existing_share_mode_lock(talloc_tos(), state->id);
656 DEBUG(1, ("%s: failed to lock share mode entry for file %s.\n",
657 __func__, file_id_string_tos(&state->id)));
661 DEBUG(10,("%s: num_share_modes = %d\n", __func__,
662 lck->data->num_share_modes ));
664 for(i = 0; i < lck->data->num_share_modes; i++) {
665 struct share_mode_entry *share_entry = &lck->data->share_modes[i];
666 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
668 if (!is_valid_share_mode_entry(share_entry)) {
673 * As there could have been multiple writes waiting at the
674 * lock_share_entry gate we may not be the first to
675 * enter. Hence the state of the op_types in the share mode
676 * entries may be partly NO_OPLOCK and partly LEVEL_II
677 * oplock. It will do no harm to re-send break messages to
678 * those smbd's that are still waiting their turn to remove
679 * their LEVEL_II state, and also no harm to ignore existing
680 * NO_OPLOCK states. JRA.
683 DEBUG(10,("%s: share_entry[%i]->op_type == %d\n", __func__,
684 i, share_entry->op_type ));
686 if (share_entry->op_type == NO_OPLOCK) {
691 if (EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) {
692 DEBUG(0,("%s: PANIC. "
693 "share mode entry %d is an exlusive "
694 "oplock !\n", __func__, i ));
699 share_mode_entry_to_message(msg, share_entry);
700 /* Overload entry->op_type */
701 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET, NO_OPLOCK);
703 messaging_send_buf(state->sconn->msg_ctx, share_entry->pid,
704 MSG_SMB_BREAK_REQUEST,
705 (uint8 *)msg, sizeof(msg));
708 /* We let the message receivers handle removing the oplock state
709 in the share mode lock db. */
717 void smbd_contend_level2_oplocks_begin(files_struct *fsp,
718 enum level2_contention_type type)
720 struct smbd_server_connection *sconn = fsp->conn->sconn;
721 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
723 if (koplocks && koplocks->ops->contend_level2_oplocks_begin) {
724 koplocks->ops->contend_level2_oplocks_begin(fsp, type);
728 contend_level2_oplocks_begin_default(fsp, type);
731 void smbd_contend_level2_oplocks_end(files_struct *fsp,
732 enum level2_contention_type type)
734 struct smbd_server_connection *sconn = fsp->conn->sconn;
735 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
737 /* Only kernel oplocks implement this so far */
738 if (koplocks && koplocks->ops->contend_level2_oplocks_end) {
739 koplocks->ops->contend_level2_oplocks_end(fsp, type);
743 /****************************************************************************
744 Linearize a share mode entry struct to an internal oplock break message.
745 ****************************************************************************/
747 void share_mode_entry_to_message(char *msg, const struct share_mode_entry *e)
749 SIVAL(msg,OP_BREAK_MSG_PID_OFFSET,(uint32)e->pid.pid);
750 SBVAL(msg,OP_BREAK_MSG_MID_OFFSET,e->op_mid);
751 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,e->op_type);
752 SIVAL(msg,OP_BREAK_MSG_ACCESS_MASK_OFFSET,e->access_mask);
753 SIVAL(msg,OP_BREAK_MSG_SHARE_ACCESS_OFFSET,e->share_access);
754 SIVAL(msg,OP_BREAK_MSG_PRIV_OFFSET,e->private_options);
755 SIVAL(msg,OP_BREAK_MSG_TIME_SEC_OFFSET,(uint32_t)e->time.tv_sec);
756 SIVAL(msg,OP_BREAK_MSG_TIME_USEC_OFFSET,(uint32_t)e->time.tv_usec);
757 push_file_id_24(msg+OP_BREAK_MSG_DEV_OFFSET, &e->id);
758 SIVAL(msg,OP_BREAK_MSG_FILE_ID_OFFSET,e->share_file_id);
759 SIVAL(msg,OP_BREAK_MSG_UID_OFFSET,e->uid);
760 SSVAL(msg,OP_BREAK_MSG_FLAGS_OFFSET,e->flags);
761 SIVAL(msg,OP_BREAK_MSG_NAME_HASH_OFFSET,e->name_hash);
762 SIVAL(msg,OP_BREAK_MSG_VNN_OFFSET,e->pid.vnn);
765 /****************************************************************************
766 De-linearize an internal oplock break message to a share mode entry struct.
767 ****************************************************************************/
769 void message_to_share_mode_entry(struct share_mode_entry *e, const char *msg)
771 e->pid.pid = (pid_t)IVAL(msg,OP_BREAK_MSG_PID_OFFSET);
772 e->op_mid = BVAL(msg,OP_BREAK_MSG_MID_OFFSET);
773 e->op_type = SVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET);
774 e->access_mask = IVAL(msg,OP_BREAK_MSG_ACCESS_MASK_OFFSET);
775 e->share_access = IVAL(msg,OP_BREAK_MSG_SHARE_ACCESS_OFFSET);
776 e->private_options = IVAL(msg,OP_BREAK_MSG_PRIV_OFFSET);
777 e->time.tv_sec = (time_t)IVAL(msg,OP_BREAK_MSG_TIME_SEC_OFFSET);
778 e->time.tv_usec = (int)IVAL(msg,OP_BREAK_MSG_TIME_USEC_OFFSET);
779 pull_file_id_24(msg+OP_BREAK_MSG_DEV_OFFSET, &e->id);
780 e->share_file_id = (unsigned long)IVAL(msg,OP_BREAK_MSG_FILE_ID_OFFSET);
781 e->uid = (uint32)IVAL(msg,OP_BREAK_MSG_UID_OFFSET);
782 e->flags = (uint16)SVAL(msg,OP_BREAK_MSG_FLAGS_OFFSET);
783 e->name_hash = IVAL(msg,OP_BREAK_MSG_NAME_HASH_OFFSET);
784 e->pid.vnn = IVAL(msg,OP_BREAK_MSG_VNN_OFFSET);
787 /****************************************************************************
788 Setup oplocks for this process.
789 ****************************************************************************/
791 bool init_oplocks(struct smbd_server_connection *sconn)
793 DEBUG(3,("init_oplocks: initializing messages.\n"));
795 messaging_register(sconn->msg_ctx, sconn, MSG_SMB_BREAK_REQUEST,
796 process_oplock_break_message);
797 messaging_register(sconn->msg_ctx, sconn, MSG_SMB_KERNEL_BREAK,
798 process_kernel_oplock_break);
802 void init_kernel_oplocks(struct smbd_server_connection *sconn)
804 struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
806 /* only initialize once */
807 if (koplocks == NULL) {
808 #if HAVE_KERNEL_OPLOCKS_IRIX
809 koplocks = irix_init_kernel_oplocks(sconn);
810 #elif HAVE_KERNEL_OPLOCKS_LINUX
811 koplocks = linux_init_kernel_oplocks(sconn);
813 sconn->oplocks.kernel_ops = koplocks;