2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-2000
5 Copyright (C) Jeremy Allison 1992-2006
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/>.
23 12 aug 96: Erik.Devriendt@te6.siemens.be
24 added support for shared memory implementation of share mode locking
26 May 1997. Jeremy Allison (jallison@whistle.com). Modified share mode
27 locking to deal with multiple share modes per open file.
29 September 1997. Jeremy Allison (jallison@whistle.com). Added oplock
32 rewritten completely to use new tdb code. Tridge, Dec '99
34 Added POSIX locking support. Jeremy Allison (jeremy@valinux.com), Apr. 2000.
35 Added Unix Extensions POSIX locking support. Jeremy Allison Mar 2006.
39 #include "system/filesys.h"
40 #include "lib/util/server_id.h"
41 #include "locking/proto.h"
42 #include "smbd/globals.h"
43 #include "dbwrap/dbwrap.h"
44 #include "dbwrap/dbwrap_open.h"
45 #include "../libcli/security/security.h"
49 #include "../librpc/gen_ndr/ndr_open_files.h"
50 #include "librpc/gen_ndr/ndr_file_id.h"
51 #include "locking/leases_db.h"
54 #define DBGC_CLASS DBGC_LOCKING
56 #define NO_LOCKING_COUNT (-1)
58 /****************************************************************************
60 ****************************************************************************/
62 const char *lock_type_name(enum brl_type lock_type)
74 const char *lock_flav_name(enum brl_flavour lock_flav)
76 return (lock_flav == WINDOWS_LOCK) ? "WINDOWS_LOCK" : "POSIX_LOCK";
79 /****************************************************************************
80 Utility function called to see if a file region is locked.
81 Called in the read/write codepath.
82 ****************************************************************************/
84 void init_strict_lock_struct(files_struct *fsp,
88 enum brl_type lock_type,
89 struct lock_struct *plock)
91 SMB_ASSERT(lock_type == READ_LOCK || lock_type == WRITE_LOCK);
93 plock->context.smblctx = smblctx;
94 plock->context.tid = fsp->conn->cnum;
95 plock->context.pid = messaging_server_id(fsp->conn->sconn->msg_ctx);
98 plock->fnum = fsp->fnum;
99 plock->lock_type = lock_type;
100 plock->lock_flav = lp_posix_cifsu_locktype(fsp);
103 bool strict_lock_check_default(files_struct *fsp, struct lock_struct *plock)
105 struct byte_range_lock *br_lck;
106 int strict_locking = lp_strict_locking(fsp->conn->params);
109 if (plock->size == 0) {
113 if (!lp_locking(fsp->conn->params) || !strict_locking) {
117 if (strict_locking == Auto) {
118 uint32_t lease_type = fsp_lease_type(fsp);
120 if ((lease_type & SMB2_LEASE_READ) &&
121 (plock->lock_type == READ_LOCK))
123 DBG_DEBUG("optimisation - read lease on file %s\n",
128 if ((lease_type & SMB2_LEASE_WRITE) &&
129 (plock->lock_type == WRITE_LOCK))
131 DBG_DEBUG("optimisation - write lease on file %s\n",
137 br_lck = brl_get_locks_readonly(fsp);
141 ret = brl_locktest(br_lck, plock);
145 * We got a lock conflict. Retry with rw locks to enable
146 * autocleanup. This is the slow path anyway.
148 br_lck = brl_get_locks(talloc_tos(), fsp);
149 if (br_lck == NULL) {
152 ret = brl_locktest(br_lck, plock);
156 DEBUG(10, ("strict_lock_default: flavour = %s brl start=%ju "
157 "len=%ju %s for fnum %ju file %s\n",
158 lock_flav_name(plock->lock_flav),
159 (uintmax_t)plock->start, (uintmax_t)plock->size,
160 ret ? "unlocked" : "locked",
161 (uintmax_t)plock->fnum, fsp_str_dbg(fsp)));
166 /****************************************************************************
167 Find out if a lock could be granted - return who is blocking us if we can't.
168 ****************************************************************************/
170 NTSTATUS query_lock(files_struct *fsp,
174 enum brl_type *plock_type,
175 enum brl_flavour lock_flav)
177 struct byte_range_lock *br_lck = NULL;
179 if (!fsp->can_lock) {
180 return fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
183 if (!lp_locking(fsp->conn->params)) {
187 br_lck = brl_get_locks_readonly(fsp);
189 return NT_STATUS_NO_MEMORY;
192 return brl_lockquery(br_lck,
194 messaging_server_id(fsp->conn->sconn->msg_ctx),
201 static void increment_current_lock_count(files_struct *fsp,
202 enum brl_flavour lock_flav)
204 if (lock_flav == WINDOWS_LOCK &&
205 fsp->current_lock_count != NO_LOCKING_COUNT) {
206 /* blocking ie. pending, locks also count here,
207 * as this is an efficiency counter to avoid checking
208 * the lock db. on close. JRA. */
210 fsp->current_lock_count++;
212 /* Notice that this has had a POSIX lock request.
213 * We can't count locks after this so forget them.
215 fsp->current_lock_count = NO_LOCKING_COUNT;
219 static void decrement_current_lock_count(files_struct *fsp,
220 enum brl_flavour lock_flav)
222 if (lock_flav == WINDOWS_LOCK &&
223 fsp->current_lock_count != NO_LOCKING_COUNT) {
224 SMB_ASSERT(fsp->current_lock_count > 0);
225 fsp->current_lock_count--;
229 /****************************************************************************
230 Utility function called by locking requests.
231 ****************************************************************************/
233 struct do_lock_state {
234 struct files_struct *fsp;
238 enum brl_type lock_type;
239 enum brl_flavour lock_flav;
241 struct server_id blocker_pid;
242 uint64_t blocker_smblctx;
246 static void do_lock_fn(
247 struct db_record *rec,
248 bool *modified_dependent,
251 struct do_lock_state *state = private_data;
252 struct byte_range_lock *br_lck = NULL;
254 br_lck = brl_get_locks(talloc_tos(), state->fsp);
255 if (br_lck == NULL) {
256 state->status = NT_STATUS_NO_MEMORY;
260 state->status = brl_lock(
263 messaging_server_id(state->fsp->conn->sconn->msg_ctx),
269 &state->blocker_smblctx);
274 NTSTATUS do_lock(files_struct *fsp,
278 enum brl_type lock_type,
279 enum brl_flavour lock_flav,
280 struct server_id *pblocker_pid,
283 struct do_lock_state state = {
288 .lock_type = lock_type,
289 .lock_flav = lock_flav,
293 /* silently return ok on print files as we don't do locking there */
294 if (fsp->print_file) {
298 if (!fsp->can_lock) {
299 if (fsp->is_directory) {
300 return NT_STATUS_INVALID_DEVICE_REQUEST;
302 return NT_STATUS_INVALID_HANDLE;
305 if (!lp_locking(fsp->conn->params)) {
309 /* NOTE! 0 byte long ranges ARE allowed and should be stored */
311 DBG_DEBUG("lock flavour %s lock type %s start=%"PRIu64" len=%"PRIu64" "
312 "requested for %s file %s\n",
313 lock_flav_name(lock_flav),
314 lock_type_name(lock_type),
320 status = share_mode_do_locked(fsp->file_id, do_lock_fn, &state);
321 if (!NT_STATUS_IS_OK(status)) {
322 DBG_DEBUG("share_mode_do_locked returned %s\n",
327 if (psmblctx != NULL) {
328 *psmblctx = state.blocker_smblctx;
330 if (pblocker_pid != NULL) {
331 *pblocker_pid = state.blocker_pid;
334 DBG_DEBUG("returning status=%s\n", nt_errstr(state.status));
336 increment_current_lock_count(fsp, lock_flav);
341 /****************************************************************************
342 Utility function called by unlocking requests.
343 ****************************************************************************/
345 NTSTATUS do_unlock(files_struct *fsp,
349 enum brl_flavour lock_flav)
352 struct byte_range_lock *br_lck = NULL;
354 if (!fsp->can_lock) {
355 return fsp->is_directory ? NT_STATUS_INVALID_DEVICE_REQUEST : NT_STATUS_INVALID_HANDLE;
358 if (!lp_locking(fsp->conn->params)) {
362 DBG_DEBUG("unlock start=%"PRIu64" len=%"PRIu64" requested for %s file "
369 br_lck = brl_get_locks(talloc_tos(), fsp);
371 return NT_STATUS_NO_MEMORY;
374 ok = brl_unlock(br_lck,
376 messaging_server_id(fsp->conn->sconn->msg_ctx),
384 DEBUG(10,("do_unlock: returning ERRlock.\n" ));
385 return NT_STATUS_RANGE_NOT_LOCKED;
388 decrement_current_lock_count(fsp, lock_flav);
392 /****************************************************************************
393 Remove any locks on this fd. Called from file_close().
394 ****************************************************************************/
396 void locking_close_file(files_struct *fsp,
397 enum file_close_type close_type)
399 struct byte_range_lock *br_lck;
401 if (!lp_locking(fsp->conn->params)) {
405 /* If we have no outstanding locks or pending
406 * locks then we don't need to look in the lock db.
409 if (fsp->current_lock_count == 0) {
413 br_lck = brl_get_locks(talloc_tos(),fsp);
417 * Unlocks must trigger dbwrap_watch watchers,
418 * normally in smbd_do_unlocking. Here it's done
419 * implictly, we're closing the file and thus remove a
420 * share mode. This will wake the waiters.
422 brl_close_fnum(br_lck);
427 /*******************************************************************
428 Print out a share mode.
429 ********************************************************************/
431 char *share_mode_str(TALLOC_CTX *ctx, int num,
432 const struct file_id *id,
433 const struct share_mode_entry *e)
435 struct server_id_buf tmp;
437 return talloc_asprintf(ctx, "share_mode_entry[%d]: "
438 "pid = %s, share_access = 0x%x, private_options = 0x%x, "
439 "access_mask = 0x%x, mid = 0x%llx, type= 0x%x, gen_id = %llu, "
440 "uid = %u, flags = %u, file_id %s, name_hash = 0x%x",
442 server_id_str_buf(e->pid, &tmp),
443 e->share_access, e->private_options,
444 e->access_mask, (unsigned long long)e->op_mid,
445 e->op_type, (unsigned long long)e->share_file_id,
446 (unsigned int)e->uid, (unsigned int)e->flags,
447 file_id_string_tos(id),
448 (unsigned int)e->name_hash);
451 /*******************************************************************
452 Fetch a share mode where we know one MUST exist. This call reference
453 counts it internally to allow for nested lock fetches.
454 ********************************************************************/
456 struct share_mode_lock *get_existing_share_mode_lock(TALLOC_CTX *mem_ctx,
457 const struct file_id id)
459 return get_share_mode_lock(mem_ctx, id, NULL, NULL, NULL);
462 static bool rename_lease_fn(struct share_mode_lock *lck,
463 struct share_mode_entry *e,
466 struct share_mode_data *d = lck->data;
469 status = leases_db_rename(&e->client_guid,
476 if (!NT_STATUS_IS_OK(status)) {
477 /* Any error recovery possible here ? */
478 DBG_WARNING("Failed to rename lease key for "
479 "renamed file %s:%s. %s\n",
488 /*******************************************************************
489 Sets the service name and filename for rename.
490 At this point we emit "file renamed" messages to all
491 process id's that have this file open.
492 Based on an initial code idea from SATOH Fumiyasu <fumiya@samba.gr.jp>
493 ********************************************************************/
495 bool rename_share_filename(struct messaging_context *msg_ctx,
496 struct share_mode_lock *lck,
498 const char *servicepath,
499 uint32_t orig_name_hash,
500 uint32_t new_name_hash,
501 const struct smb_filename *smb_fname_dst)
503 struct share_mode_data *d = lck->data;
504 struct file_rename_message msg = {
506 .servicepath = servicepath,
507 .base_name = smb_fname_dst->base_name,
508 .stream_name = smb_fname_dst->stream_name,
511 struct server_id self_pid = messaging_server_id(msg_ctx);
514 DEBUG(10, ("rename_share_filename: servicepath %s newname %s\n",
515 servicepath, smb_fname_dst->base_name));
518 * rename_internal_fsp() and rename_internals() add './' to
519 * head of newname if newname does not contain a '/'.
522 if (strncmp(msg.base_name, "./", 2) == 0) {
526 d->servicepath = talloc_strdup(d, msg.servicepath);
527 d->base_name = talloc_strdup(d, msg.base_name);
528 d->stream_name = talloc_strdup(d, msg.stream_name);
529 if ((d->servicepath == NULL) ||
530 (d->base_name == NULL) ||
531 ((msg.stream_name != NULL) && (d->stream_name == NULL))) {
532 DBG_WARNING("talloc failed\n");
537 /* Send the messages. */
538 for (i=0; i<d->num_share_modes; i++) {
539 struct share_mode_entry *se = &d->share_modes[i];
541 enum ndr_err_code ndr_err;
543 if (!is_valid_share_mode_entry(se)) {
547 /* If this is a hardlink to the inode
548 with a different name, skip this. */
549 if (se->name_hash != orig_name_hash) {
553 se->name_hash = new_name_hash;
555 /* But not to ourselves... */
556 if (serverid_equal(&se->pid, &self_pid)) {
560 if (share_mode_stale_pid(d, i)) {
564 msg.share_file_id = se->share_file_id;
566 ndr_err = ndr_push_struct_blob(
570 (ndr_push_flags_fn_t)ndr_push_file_rename_message);
571 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
572 DBG_DEBUG("ndr_push_file_rename_message failed: %s\n",
573 ndr_errstr(ndr_err));
576 if (DEBUGLEVEL >= 10) {
577 struct server_id_buf tmp;
578 DBG_DEBUG("sending rename message to %s\n",
579 server_id_str_buf(se->pid, &tmp));
580 NDR_PRINT_DEBUG(file_rename_message, &msg);
583 messaging_send(msg_ctx, se->pid, MSG_SMB_FILE_RENAME, &blob);
585 TALLOC_FREE(blob.data);
588 ok = share_mode_forall_leases(lck, rename_lease_fn, NULL);
591 * Ignore error here. Not sure what to do..
593 DBG_WARNING("share_mode_forall_leases failed\n");
599 void get_file_infos(struct file_id id,
601 bool *delete_on_close,
602 struct timespec *write_time)
604 struct share_mode_lock *lck;
606 if (delete_on_close) {
607 *delete_on_close = false;
611 ZERO_STRUCTP(write_time);
614 if (!(lck = fetch_share_mode_unlocked(talloc_tos(), id))) {
618 if (delete_on_close) {
619 *delete_on_close = is_delete_on_close_set(lck, name_hash);
623 *write_time = get_share_mode_write_time(lck);
629 bool is_valid_share_mode_entry(const struct share_mode_entry *e)
637 num_props += ((e->op_type == NO_OPLOCK) ? 1 : 0);
638 num_props += (EXCLUSIVE_OPLOCK_TYPE(e->op_type) ? 1 : 0);
639 num_props += (LEVEL_II_OPLOCK_TYPE(e->op_type) ? 1 : 0);
640 num_props += (e->op_type == LEASE_OPLOCK);
642 if ((num_props > 1) && serverid_exists(&e->pid)) {
643 smb_panic("Invalid share mode entry");
645 return (num_props != 0);
649 * See if we need to remove a lease being referred to by a
650 * share mode that is being marked stale or deleted.
653 static void remove_share_mode_lease(struct share_mode_data *d,
654 struct share_mode_entry *e)
659 op_type = e->op_type;
660 e->op_type = NO_OPLOCK;
664 if (op_type != LEASE_OPLOCK) {
669 * This used to reference a lease. If there's no other one referencing
673 for (i=0; i<d->num_share_modes; i++) {
674 struct share_mode_entry *e2 = &d->share_modes[i];
683 if (smb2_lease_equal(&e->client_guid,
690 if (i < d->num_share_modes) {
700 status = leases_db_del(&e->client_guid,
704 DEBUG(10, ("%s: leases_db_del returned %s\n", __func__,
710 * In case d->share_modes[i] conflicts with something or otherwise is
711 * being used, we need to make sure the corresponding process still
714 bool share_mode_stale_pid(struct share_mode_data *d, uint32_t idx)
716 struct server_id_buf tmp;
717 struct share_mode_entry *e;
719 if (idx > d->num_share_modes) {
720 DBG_WARNING("Asking for index %"PRIu32", "
721 "only %"PRIu32" around\n",
726 e = &d->share_modes[idx];
733 if (serverid_exists(&e->pid)) {
734 DBG_DEBUG("PID %s (index %"PRIu32" out of %"PRIu32") "
736 server_id_str_buf(e->pid, &tmp),
741 DBG_DEBUG("PID %s (index %"PRIu32" out of %"PRIu32") "
742 "does not exist anymore\n",
743 server_id_str_buf(e->pid, &tmp),
749 if (d->num_delete_tokens != 0) {
752 for (i=0; i<d->num_share_modes; i++) {
753 bool valid = !d->share_modes[i].stale;
759 if (i == d->num_share_modes) {
761 * No valid (non-stale) share mode found, all
762 * who might have set the delete token are
765 TALLOC_FREE(d->delete_tokens);
766 d->num_delete_tokens = 0;
770 remove_share_mode_lease(d, e);
776 void remove_stale_share_mode_entries(struct share_mode_data *d)
781 while (i < d->num_share_modes) {
782 if (d->share_modes[i].stale) {
783 struct share_mode_entry *m = d->share_modes;
784 m[i] = m[d->num_share_modes-1];
785 d->num_share_modes -= 1;
792 bool set_share_mode(struct share_mode_lock *lck,
793 struct files_struct *fsp,
797 uint32_t share_access,
798 uint32_t access_mask)
800 struct share_mode_data *d = lck->data;
801 struct share_mode_entry *tmp, *e;
803 tmp = talloc_realloc(d, d->share_modes, struct share_mode_entry,
804 d->num_share_modes+1);
808 d->share_modes = tmp;
809 e = &d->share_modes[d->num_share_modes];
810 d->num_share_modes += 1;
814 e->pid = messaging_server_id(fsp->conn->sconn->msg_ctx);
815 e->share_access = share_access;
816 e->private_options = fsp->fh->private_options;
817 e->access_mask = access_mask;
819 e->op_type = op_type;
821 if (op_type == LEASE_OPLOCK) {
822 const struct GUID *client_guid = fsp_client_guid(fsp);
823 e->client_guid = *client_guid;
824 e->lease_key = fsp->lease->lease.lease_key;
827 e->time.tv_sec = fsp->open_time.tv_sec;
828 e->time.tv_usec = fsp->open_time.tv_usec;
829 e->share_file_id = fsp->fh->gen_id;
830 e->uid = (uint32_t)uid;
831 e->flags = (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) ?
832 SHARE_MODE_FLAG_POSIX_OPEN : 0;
833 e->name_hash = fsp->name_hash;
838 static struct share_mode_entry *find_share_mode_entry(
839 struct share_mode_lock *lck, files_struct *fsp)
841 struct share_mode_data *d = lck->data;
842 struct server_id pid;
845 pid = messaging_server_id(fsp->conn->sconn->msg_ctx);
847 for (i=0; i<d->num_share_modes; i++) {
848 struct share_mode_entry *e = &d->share_modes[i];
850 if (!is_valid_share_mode_entry(e)) {
853 if (!serverid_equal(&pid, &e->pid)) {
856 if (fsp->fh->gen_id != e->share_file_id) {
864 /*******************************************************************
865 Del the share mode of a file for this process.
866 ********************************************************************/
868 bool del_share_mode(struct share_mode_lock *lck, files_struct *fsp)
870 struct share_mode_entry *e;
872 e = find_share_mode_entry(lck, fsp);
876 remove_share_mode_lease(lck->data, e);
877 *e = lck->data->share_modes[lck->data->num_share_modes-1];
878 lck->data->num_share_modes -= 1;
879 lck->data->modified = True;
883 bool mark_share_mode_disconnected(struct share_mode_lock *lck,
884 struct files_struct *fsp)
886 struct share_mode_entry *e;
888 if (lck->data->num_share_modes != 1) {
892 if (fsp->op == NULL) {
895 if (!fsp->op->global->durable) {
899 e = find_share_mode_entry(lck, fsp);
904 DEBUG(10, ("Marking share mode entry disconnected for durable handle\n"));
906 server_id_set_disconnected(&e->pid);
909 * On reopen the caller needs to check that
910 * the client comes with the correct handle.
912 e->share_file_id = fsp->op->global->open_persistent_id;
914 lck->data->modified = true;
918 /*******************************************************************
919 Remove an oplock mid and mode entry from a share mode.
920 ********************************************************************/
922 bool remove_share_oplock(struct share_mode_lock *lck, files_struct *fsp)
924 struct share_mode_data *d = lck->data;
925 struct share_mode_entry *e;
927 e = find_share_mode_entry(lck, fsp);
932 remove_share_mode_lease(d, e);
937 /*******************************************************************
938 Downgrade a oplock type from exclusive to level II.
939 ********************************************************************/
941 bool downgrade_share_oplock(struct share_mode_lock *lck, files_struct *fsp)
943 struct share_mode_entry *e;
945 e = find_share_mode_entry(lck, fsp);
950 e->op_type = LEVEL_II_OPLOCK;
951 lck->data->flags |= SHARE_MODE_HAS_READ_LEASE;
952 lck->data->modified = True;
956 /****************************************************************************
957 Adds a delete on close token.
958 ****************************************************************************/
960 static bool add_delete_on_close_token(struct share_mode_data *d,
962 const struct security_token *nt_tok,
963 const struct security_unix_token *tok)
965 struct delete_token *tmp, *dtl;
967 tmp = talloc_realloc(d, d->delete_tokens, struct delete_token,
968 d->num_delete_tokens+1);
972 d->delete_tokens = tmp;
973 dtl = &d->delete_tokens[d->num_delete_tokens];
975 dtl->name_hash = name_hash;
976 dtl->delete_nt_token = dup_nt_token(d->delete_tokens, nt_tok);
977 if (dtl->delete_nt_token == NULL) {
980 dtl->delete_token = copy_unix_token(d->delete_tokens, tok);
981 if (dtl->delete_token == NULL) {
984 d->num_delete_tokens += 1;
989 void reset_delete_on_close_lck(files_struct *fsp,
990 struct share_mode_lock *lck)
992 struct share_mode_data *d = lck->data;
995 for (i=0; i<d->num_delete_tokens; i++) {
996 struct delete_token *dt = &d->delete_tokens[i];
998 if (dt->name_hash == fsp->name_hash) {
1001 /* Delete this entry. */
1002 TALLOC_FREE(dt->delete_nt_token);
1003 TALLOC_FREE(dt->delete_token);
1004 *dt = d->delete_tokens[d->num_delete_tokens-1];
1005 d->num_delete_tokens -= 1;
1010 /****************************************************************************
1011 Sets the delete on close flag over all share modes on this file.
1012 Modify the share mode entry for all files open
1013 on this device and inode to tell other smbds we have
1014 changed the delete on close flag. This will be noticed
1015 in the close code, the last closer will delete the file
1017 This makes a copy of any struct security_unix_token into the
1018 lck entry. This function is used when the lock is already granted.
1019 ****************************************************************************/
1021 void set_delete_on_close_lck(files_struct *fsp,
1022 struct share_mode_lock *lck,
1023 const struct security_token *nt_tok,
1024 const struct security_unix_token *tok)
1026 struct messaging_context *msg_ctx = fsp->conn->sconn->msg_ctx;
1027 struct share_mode_data *d = lck->data;
1030 DATA_BLOB fid_blob = {};
1031 enum ndr_err_code ndr_err;
1033 SMB_ASSERT(nt_tok != NULL);
1034 SMB_ASSERT(tok != NULL);
1036 for (i=0; i<d->num_delete_tokens; i++) {
1037 struct delete_token *dt = &d->delete_tokens[i];
1038 if (dt->name_hash == fsp->name_hash) {
1041 /* Replace this token with the given tok. */
1042 TALLOC_FREE(dt->delete_nt_token);
1043 dt->delete_nt_token = dup_nt_token(dt, nt_tok);
1044 SMB_ASSERT(dt->delete_nt_token != NULL);
1045 TALLOC_FREE(dt->delete_token);
1046 dt->delete_token = copy_unix_token(dt, tok);
1047 SMB_ASSERT(dt->delete_token != NULL);
1053 ret = add_delete_on_close_token(lck->data, fsp->name_hash, nt_tok, tok);
1056 ndr_err = ndr_push_struct_blob(&fid_blob, talloc_tos(), &fsp->file_id,
1057 (ndr_push_flags_fn_t)ndr_push_file_id);
1058 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1059 DEBUG(10, ("ndr_push_file_id failed: %s\n",
1060 ndr_errstr(ndr_err)));
1063 for (i=0; i<d->num_share_modes; i++) {
1064 struct share_mode_entry *e = &d->share_modes[i];
1067 status = messaging_send(
1068 msg_ctx, e->pid, MSG_SMB_NOTIFY_CANCEL_DELETED,
1071 if (!NT_STATUS_IS_OK(status)) {
1072 struct server_id_buf tmp;
1073 DEBUG(10, ("%s: messaging_send to %s returned %s\n",
1074 __func__, server_id_str_buf(e->pid, &tmp),
1075 nt_errstr(status)));
1079 TALLOC_FREE(fid_blob.data);
1082 bool set_delete_on_close(files_struct *fsp, bool delete_on_close,
1083 const struct security_token *nt_tok,
1084 const struct security_unix_token *tok)
1086 struct share_mode_lock *lck;
1088 DEBUG(10,("set_delete_on_close: %s delete on close flag for "
1090 delete_on_close ? "Adding" : "Removing", fsp_fnum_dbg(fsp),
1093 lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
1098 if (delete_on_close) {
1099 set_delete_on_close_lck(fsp, lck, nt_tok, tok);
1101 reset_delete_on_close_lck(fsp, lck);
1104 if (fsp->is_directory) {
1105 SMB_ASSERT(!is_ntfs_stream_smb_fname(fsp->fsp_name));
1106 send_stat_cache_delete_message(fsp->conn->sconn->msg_ctx,
1107 fsp->fsp_name->base_name);
1112 fsp->delete_on_close = delete_on_close;
1117 static struct delete_token *find_delete_on_close_token(
1118 struct share_mode_data *d, uint32_t name_hash)
1122 DEBUG(10, ("find_delete_on_close_token: name_hash = 0x%x\n",
1123 (unsigned int)name_hash));
1125 for (i=0; i<d->num_delete_tokens; i++) {
1126 struct delete_token *dt = &d->delete_tokens[i];
1128 DEBUG(10, ("find__delete_on_close_token: dt->name_hash = 0x%x\n",
1129 (unsigned int)dt->name_hash ));
1130 if (dt->name_hash == name_hash) {
1137 /****************************************************************************
1138 Return the NT token and UNIX token if there's a match. Return true if
1139 found, false if not.
1140 ****************************************************************************/
1142 bool get_delete_on_close_token(struct share_mode_lock *lck,
1144 const struct security_token **pp_nt_tok,
1145 const struct security_unix_token **pp_tok)
1147 struct delete_token *dt;
1149 dt = find_delete_on_close_token(lck->data, name_hash);
1153 *pp_nt_tok = dt->delete_nt_token;
1154 *pp_tok = dt->delete_token;
1158 bool is_delete_on_close_set(struct share_mode_lock *lck, uint32_t name_hash)
1160 return find_delete_on_close_token(lck->data, name_hash) != NULL;
1163 bool set_sticky_write_time(struct file_id fileid, struct timespec write_time)
1165 struct share_mode_lock *lck;
1167 DEBUG(5,("set_sticky_write_time: %s id=%s\n",
1168 timestring(talloc_tos(),
1169 convert_timespec_to_time_t(write_time)),
1170 file_id_string_tos(&fileid)));
1172 lck = get_existing_share_mode_lock(talloc_tos(), fileid);
1177 if (timespec_compare(&lck->data->changed_write_time, &write_time) != 0) {
1178 lck->data->modified = True;
1179 lck->data->changed_write_time = write_time;
1186 bool set_write_time(struct file_id fileid, struct timespec write_time)
1188 struct share_mode_lock *lck;
1190 DEBUG(5,("set_write_time: %s id=%s\n",
1191 timestring(talloc_tos(),
1192 convert_timespec_to_time_t(write_time)),
1193 file_id_string_tos(&fileid)));
1195 lck = get_existing_share_mode_lock(talloc_tos(), fileid);
1200 if (timespec_compare(&lck->data->old_write_time, &write_time) != 0) {
1201 lck->data->modified = True;
1202 lck->data->old_write_time = write_time;
1209 struct timespec get_share_mode_write_time(struct share_mode_lock *lck)
1211 struct share_mode_data *d = lck->data;
1213 if (!null_timespec(d->changed_write_time)) {
1214 return d->changed_write_time;
1216 return d->old_write_time;
1219 bool file_has_open_streams(files_struct *fsp)
1221 struct share_mode_lock *lock = NULL;
1222 struct share_mode_data *d = NULL;
1225 lock = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
1231 for (i = 0; i < d->num_share_modes; i++) {
1232 struct share_mode_entry *e = &d->share_modes[i];
1234 if (share_mode_stale_pid(d, i)) {
1238 if (e->private_options &
1239 NTCREATEX_OPTIONS_PRIVATE_STREAM_BASEOPEN)
1251 * Walk share mode entries, looking at every lease only once
1254 bool share_mode_forall_leases(
1255 struct share_mode_lock *lck,
1256 bool (*fn)(struct share_mode_lock *lck,
1257 struct share_mode_entry *e,
1258 void *private_data),
1261 struct share_mode_data *d = lck->data;
1262 uint32_t *leases = NULL;
1263 uint32_t num_leases = 0;
1266 leases = talloc_array(talloc_tos(), uint32_t, d->num_share_modes);
1267 if (leases == NULL) {
1271 for (i=0; i<d->num_share_modes; i++) {
1272 struct share_mode_entry *e = &d->share_modes[i];
1276 ok = is_valid_share_mode_entry(e);
1281 if (e->op_type != LEASE_OPLOCK) {
1286 * See if we have already seen "e"'s lease. This is
1287 * O(n^2). If we sort "leases", we can get this down
1291 for (j=0; j<num_leases; j++) {
1292 uint32_t idx = leases[j];
1293 struct share_mode_entry *l = &d->share_modes[idx];
1295 if (smb2_lease_equal(&e->client_guid,
1302 if (j < num_leases) {
1304 * Don't look at "e"'s lease, we've already
1310 stop = fn(lck, e, private_data);
1312 TALLOC_FREE(leases);
1316 leases[num_leases] = i;
1320 TALLOC_FREE(leases);