2 Unix SMB/CIFS implementation.
3 file opening and share modes
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2004
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/>.
24 extern const struct generic_mapping file_generic_mapping;
25 extern bool global_client_failed_oplock_break;
27 struct deferred_open_record {
28 bool delayed_for_oplocks;
32 /****************************************************************************
33 fd support routines - attempt to do a dos_open.
34 ****************************************************************************/
36 static NTSTATUS fd_open(struct connection_struct *conn,
42 NTSTATUS status = NT_STATUS_OK;
46 * Never follow symlinks on a POSIX client. The
47 * client should be doing this.
50 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
55 fsp->fh->fd = SMB_VFS_OPEN(conn,fname,fsp,flags,mode);
56 if (fsp->fh->fd == -1) {
57 status = map_nt_error_from_unix(errno);
60 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
61 fname, flags, (int)mode, fsp->fh->fd,
62 (fsp->fh->fd == -1) ? strerror(errno) : "" ));
67 /****************************************************************************
68 Close the file associated with a fsp.
69 ****************************************************************************/
71 NTSTATUS fd_close(files_struct *fsp)
75 if (fsp->fh->fd == -1) {
76 return NT_STATUS_OK; /* What we used to call a stat open. */
78 if (fsp->fh->ref_count > 1) {
79 return NT_STATUS_OK; /* Shared handle. Only close last reference. */
82 ret = SMB_VFS_CLOSE(fsp);
85 return map_nt_error_from_unix(errno);
90 /****************************************************************************
91 Change the ownership of a file to that of the parent directory.
92 Do this by fd if possible.
93 ****************************************************************************/
95 static void change_file_owner_to_parent(connection_struct *conn,
96 const char *inherit_from_dir,
99 SMB_STRUCT_STAT parent_st;
102 ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
104 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
105 "directory %s. Error was %s\n",
106 inherit_from_dir, strerror(errno) ));
111 ret = SMB_VFS_FCHOWN(fsp, parent_st.st_uid, (gid_t)-1);
114 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
115 "file %s to parent directory uid %u. Error "
116 "was %s\n", fsp->fsp_name,
117 (unsigned int)parent_st.st_uid,
121 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
122 "parent directory uid %u.\n", fsp->fsp_name,
123 (unsigned int)parent_st.st_uid ));
126 static NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
127 const char *inherit_from_dir,
129 SMB_STRUCT_STAT *psbuf)
131 char *saved_dir = NULL;
132 SMB_STRUCT_STAT sbuf;
133 SMB_STRUCT_STAT parent_st;
134 TALLOC_CTX *ctx = talloc_tos();
135 NTSTATUS status = NT_STATUS_OK;
138 ret = SMB_VFS_STAT(conn, inherit_from_dir, &parent_st);
140 status = map_nt_error_from_unix(errno);
141 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
142 "directory %s. Error was %s\n",
143 inherit_from_dir, strerror(errno) ));
147 /* We've already done an lstat into psbuf, and we know it's a
148 directory. If we can cd into the directory and the dev/ino
149 are the same then we can safely chown without races as
150 we're locking the directory in place by being in it. This
151 should work on any UNIX (thanks tridge :-). JRA.
154 saved_dir = vfs_GetWd(ctx,conn);
156 status = map_nt_error_from_unix(errno);
157 DEBUG(0,("change_dir_owner_to_parent: failed to get "
158 "current working directory. Error was %s\n",
163 /* Chdir into the new path. */
164 if (vfs_ChDir(conn, fname) == -1) {
165 status = map_nt_error_from_unix(errno);
166 DEBUG(0,("change_dir_owner_to_parent: failed to change "
167 "current working directory to %s. Error "
168 "was %s\n", fname, strerror(errno) ));
172 if (SMB_VFS_STAT(conn,".",&sbuf) == -1) {
173 status = map_nt_error_from_unix(errno);
174 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
175 "directory '.' (%s) Error was %s\n",
176 fname, strerror(errno)));
180 /* Ensure we're pointing at the same place. */
181 if (sbuf.st_dev != psbuf->st_dev ||
182 sbuf.st_ino != psbuf->st_ino ||
183 sbuf.st_mode != psbuf->st_mode ) {
184 DEBUG(0,("change_dir_owner_to_parent: "
185 "device/inode/mode on directory %s changed. "
186 "Refusing to chown !\n", fname ));
187 status = NT_STATUS_ACCESS_DENIED;
192 ret = SMB_VFS_CHOWN(conn, ".", parent_st.st_uid, (gid_t)-1);
195 status = map_nt_error_from_unix(errno);
196 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
197 "directory %s to parent directory uid %u. "
198 "Error was %s\n", fname,
199 (unsigned int)parent_st.st_uid, strerror(errno) ));
203 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
204 "directory %s to parent directory uid %u.\n",
205 fname, (unsigned int)parent_st.st_uid ));
209 vfs_ChDir(conn,saved_dir);
213 /****************************************************************************
215 ****************************************************************************/
217 static NTSTATUS open_file(files_struct *fsp,
218 connection_struct *conn,
219 struct smb_request *req,
220 const char *parent_dir,
223 SMB_STRUCT_STAT *psbuf,
226 uint32 access_mask, /* client requested access mask. */
227 uint32 open_access_mask) /* what we're actually using in the open. */
229 NTSTATUS status = NT_STATUS_OK;
230 int accmode = (flags & O_ACCMODE);
231 int local_flags = flags;
232 bool file_existed = VALID_STAT(*psbuf);
237 /* Check permissions */
240 * This code was changed after seeing a client open request
241 * containing the open mode of (DENY_WRITE/read-only) with
242 * the 'create if not exist' bit set. The previous code
243 * would fail to open the file read only on a read-only share
244 * as it was checking the flags parameter directly against O_RDONLY,
245 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
249 if (!CAN_WRITE(conn)) {
250 /* It's a read-only share - fail if we wanted to write. */
251 if(accmode != O_RDONLY) {
252 DEBUG(3,("Permission denied opening %s\n", path));
253 return NT_STATUS_ACCESS_DENIED;
254 } else if(flags & O_CREAT) {
255 /* We don't want to write - but we must make sure that
256 O_CREAT doesn't create the file if we have write
257 access into the directory.
260 local_flags &= ~O_CREAT;
265 * This little piece of insanity is inspired by the
266 * fact that an NT client can open a file for O_RDONLY,
267 * but set the create disposition to FILE_EXISTS_TRUNCATE.
268 * If the client *can* write to the file, then it expects to
269 * truncate the file, even though it is opening for readonly.
270 * Quicken uses this stupid trick in backup file creation...
271 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
272 * for helping track this one down. It didn't bite us in 2.0.x
273 * as we always opened files read-write in that release. JRA.
276 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
277 DEBUG(10,("open_file: truncate requested on read-only open "
278 "for file %s\n", path));
279 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
282 if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
283 (!file_existed && (local_flags & O_CREAT)) ||
284 ((local_flags & O_TRUNC) == O_TRUNC) ) {
287 * We can't actually truncate here as the file may be locked.
288 * open_file_ntcreate will take care of the truncate later. JRA.
291 local_flags &= ~O_TRUNC;
293 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
295 * We would block on opening a FIFO with no one else on the
296 * other end. Do what we used to do and add O_NONBLOCK to the
300 if (file_existed && S_ISFIFO(psbuf->st_mode)) {
301 local_flags |= O_NONBLOCK;
305 /* Don't create files with Microsoft wildcard characters. */
306 if ((local_flags & O_CREAT) && !file_existed &&
308 return NT_STATUS_OBJECT_NAME_INVALID;
311 /* Actually do the open */
312 status = fd_open(conn, path, fsp, local_flags, unx_mode);
313 if (!NT_STATUS_IS_OK(status)) {
314 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
316 path,nt_errstr(status),local_flags,flags));
320 if ((local_flags & O_CREAT) && !file_existed) {
322 /* Inherit the ACL if required */
323 if (lp_inherit_perms(SNUM(conn))) {
324 inherit_access_posix_acl(conn, parent_dir, path,
328 /* Change the owner if required. */
329 if (lp_inherit_owner(SNUM(conn))) {
330 change_file_owner_to_parent(conn, parent_dir,
334 notify_fname(conn, NOTIFY_ACTION_ADDED,
335 FILE_NOTIFY_CHANGE_FILE_NAME, path);
339 fsp->fh->fd = -1; /* What we used to call a stat open. */
345 if (fsp->fh->fd == -1) {
346 ret = SMB_VFS_STAT(conn, path, psbuf);
348 ret = SMB_VFS_FSTAT(fsp, psbuf);
349 /* If we have an fd, this stat should succeed. */
351 DEBUG(0,("Error doing fstat on open file %s "
352 "(%s)\n", path,strerror(errno) ));
356 /* For a non-io open, this stat failing means file not found. JRA */
358 status = map_nt_error_from_unix(errno);
365 * POSIX allows read-only opens of directories. We don't
366 * want to do this (we use a different code path for this)
367 * so catch a directory open and return an EISDIR. JRA.
370 if(S_ISDIR(psbuf->st_mode)) {
373 return NT_STATUS_FILE_IS_A_DIRECTORY;
376 fsp->mode = psbuf->st_mode;
377 fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
378 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
379 fsp->file_pid = req ? req->smbpid : 0;
380 fsp->can_lock = True;
381 fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
382 if (!CAN_WRITE(conn)) {
383 fsp->can_write = False;
385 fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
388 fsp->print_file = False;
389 fsp->modified = False;
390 fsp->sent_oplock_break = NO_BREAK_SENT;
391 fsp->is_directory = False;
392 if (conn->aio_write_behind_list &&
393 is_in_path(path, conn->aio_write_behind_list, conn->case_sensitive)) {
394 fsp->aio_write_behind = True;
397 string_set(&fsp->fsp_name, path);
398 fsp->wcp = NULL; /* Write cache pointer. */
400 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
401 conn->server_info->unix_name,
403 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
404 conn->num_files_open + 1));
410 /*******************************************************************
411 Return True if the filename is one of the special executable types.
412 ********************************************************************/
414 static bool is_executable(const char *fname)
416 if ((fname = strrchr_m(fname,'.'))) {
417 if (strequal(fname,".com") ||
418 strequal(fname,".dll") ||
419 strequal(fname,".exe") ||
420 strequal(fname,".sym")) {
427 /****************************************************************************
428 Check if we can open a file with a share mode.
429 Returns True if conflict, False if not.
430 ****************************************************************************/
432 static bool share_conflict(struct share_mode_entry *entry,
436 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
437 "entry->share_access = 0x%x, "
438 "entry->private_options = 0x%x\n",
439 (unsigned int)entry->access_mask,
440 (unsigned int)entry->share_access,
441 (unsigned int)entry->private_options));
443 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
444 (unsigned int)access_mask, (unsigned int)share_access));
446 if ((entry->access_mask & (FILE_WRITE_DATA|
450 DELETE_ACCESS)) == 0) {
451 DEBUG(10,("share_conflict: No conflict due to "
452 "entry->access_mask = 0x%x\n",
453 (unsigned int)entry->access_mask ));
457 if ((access_mask & (FILE_WRITE_DATA|
461 DELETE_ACCESS)) == 0) {
462 DEBUG(10,("share_conflict: No conflict due to "
463 "access_mask = 0x%x\n",
464 (unsigned int)access_mask ));
468 #if 1 /* JRA TEST - Superdebug. */
469 #define CHECK_MASK(num, am, right, sa, share) \
470 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
471 (unsigned int)(num), (unsigned int)(am), \
472 (unsigned int)(right), (unsigned int)(am)&(right) )); \
473 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
474 (unsigned int)(num), (unsigned int)(sa), \
475 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
476 if (((am) & (right)) && !((sa) & (share))) { \
477 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
478 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
479 (unsigned int)(share) )); \
483 #define CHECK_MASK(num, am, right, sa, share) \
484 if (((am) & (right)) && !((sa) & (share))) { \
485 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
486 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
487 (unsigned int)(share) )); \
492 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
493 share_access, FILE_SHARE_WRITE);
494 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
495 entry->share_access, FILE_SHARE_WRITE);
497 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
498 share_access, FILE_SHARE_READ);
499 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
500 entry->share_access, FILE_SHARE_READ);
502 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
503 share_access, FILE_SHARE_DELETE);
504 CHECK_MASK(6, access_mask, DELETE_ACCESS,
505 entry->share_access, FILE_SHARE_DELETE);
507 DEBUG(10,("share_conflict: No conflict.\n"));
511 #if defined(DEVELOPER)
512 static void validate_my_share_entries(int num,
513 struct share_mode_entry *share_entry)
517 if (!procid_is_me(&share_entry->pid)) {
521 if (is_deferred_open_entry(share_entry) &&
522 !open_was_deferred(share_entry->op_mid)) {
523 char *str = talloc_asprintf(talloc_tos(),
524 "Got a deferred entry without a request: "
526 share_mode_str(talloc_tos(), num, share_entry));
530 if (!is_valid_share_mode_entry(share_entry)) {
534 fsp = file_find_dif(share_entry->id,
535 share_entry->share_file_id);
537 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
538 share_mode_str(talloc_tos(), num, share_entry) ));
539 smb_panic("validate_my_share_entries: Cannot match a "
540 "share entry with an open file\n");
543 if (is_deferred_open_entry(share_entry) ||
544 is_unused_share_mode_entry(share_entry)) {
548 if ((share_entry->op_type == NO_OPLOCK) &&
549 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
550 /* Someone has already written to it, but I haven't yet
555 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
564 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
565 share_mode_str(talloc_tos(), num, share_entry) ));
566 str = talloc_asprintf(talloc_tos(),
567 "validate_my_share_entries: "
568 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
569 fsp->fsp_name, (unsigned int)fsp->oplock_type,
570 (unsigned int)share_entry->op_type );
576 static bool is_stat_open(uint32 access_mask)
578 return (access_mask &&
579 ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
580 FILE_WRITE_ATTRIBUTES))==0) &&
581 ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
582 FILE_WRITE_ATTRIBUTES)) != 0));
585 /****************************************************************************
586 Deal with share modes
587 Invarient: Share mode must be locked on entry and exit.
588 Returns -1 on error, or number of share modes on success (may be zero).
589 ****************************************************************************/
591 static NTSTATUS open_mode_check(connection_struct *conn,
593 struct share_mode_lock *lck,
596 uint32 create_options,
601 if(lck->num_share_modes == 0) {
605 *file_existed = True;
607 /* A delete on close prohibits everything */
609 if (lck->delete_on_close) {
610 return NT_STATUS_DELETE_PENDING;
613 if (is_stat_open(access_mask)) {
614 /* Stat open that doesn't trigger oplock breaks or share mode
615 * checks... ! JRA. */
620 * Check if the share modes will give us access.
623 #if defined(DEVELOPER)
624 for(i = 0; i < lck->num_share_modes; i++) {
625 validate_my_share_entries(i, &lck->share_modes[i]);
629 if (!lp_share_modes(SNUM(conn))) {
633 /* Now we check the share modes, after any oplock breaks. */
634 for(i = 0; i < lck->num_share_modes; i++) {
636 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
640 /* someone else has a share lock on it, check to see if we can
642 if (share_conflict(&lck->share_modes[i],
643 access_mask, share_access)) {
644 return NT_STATUS_SHARING_VIOLATION;
651 static bool is_delete_request(files_struct *fsp) {
652 return ((fsp->access_mask == DELETE_ACCESS) &&
653 (fsp->oplock_type == NO_OPLOCK));
657 * 1) No files open at all or internal open: Grant whatever the client wants.
659 * 2) Exclusive (or batch) oplock around: If the requested access is a delete
660 * request, break if the oplock around is a batch oplock. If it's another
661 * requested access type, break.
663 * 3) Only level2 around: Grant level2 and do nothing else.
666 static bool delay_for_oplocks(struct share_mode_lock *lck,
673 struct share_mode_entry *exclusive = NULL;
674 bool valid_entry = False;
675 bool delay_it = False;
676 bool have_level2 = False;
678 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
680 if (oplock_request & INTERNAL_OPEN_ONLY) {
681 fsp->oplock_type = NO_OPLOCK;
684 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
688 for (i=0; i<lck->num_share_modes; i++) {
690 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
694 /* At least one entry is not an invalid or deferred entry. */
697 if (pass_number == 1) {
698 if (BATCH_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
699 SMB_ASSERT(exclusive == NULL);
700 exclusive = &lck->share_modes[i];
703 if (EXCLUSIVE_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
704 SMB_ASSERT(exclusive == NULL);
705 exclusive = &lck->share_modes[i];
709 if (lck->share_modes[i].op_type == LEVEL_II_OPLOCK) {
710 SMB_ASSERT(exclusive == NULL);
716 /* All entries are placeholders or deferred.
717 * Directly grant whatever the client wants. */
718 if (fsp->oplock_type == NO_OPLOCK) {
719 /* Store a level2 oplock, but don't tell the client */
720 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
725 if (exclusive != NULL) { /* Found an exclusive oplock */
726 SMB_ASSERT(!have_level2);
727 delay_it = is_delete_request(fsp) ?
728 BATCH_OPLOCK_TYPE(exclusive->op_type) : True;
731 if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
732 /* We can at most grant level2 as there are other
733 * level2 or NO_OPLOCK entries. */
734 fsp->oplock_type = LEVEL_II_OPLOCK;
737 if ((fsp->oplock_type == NO_OPLOCK) && have_level2) {
738 /* Store a level2 oplock, but don't tell the client */
739 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
747 * Send a break message to the oplock holder and delay the open for
751 DEBUG(10, ("Sending break request to PID %s\n",
752 procid_str_static(&exclusive->pid)));
753 exclusive->op_mid = mid;
755 /* Create the message. */
756 share_mode_entry_to_message(msg, exclusive);
758 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
759 don't want this set in the share mode struct pointed to by lck. */
761 if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
762 SSVAL(msg,6,exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
765 status = messaging_send_buf(smbd_messaging_context(), exclusive->pid,
766 MSG_SMB_BREAK_REQUEST,
768 MSG_SMB_SHARE_MODE_ENTRY_SIZE);
769 if (!NT_STATUS_IS_OK(status)) {
770 DEBUG(3, ("Could not send oplock break message: %s\n",
777 static bool request_timed_out(struct timeval request_time,
778 struct timeval timeout)
780 struct timeval now, end_time;
782 end_time = timeval_sum(&request_time, &timeout);
783 return (timeval_compare(&end_time, &now) < 0);
786 /****************************************************************************
787 Handle the 1 second delay in returning a SHARING_VIOLATION error.
788 ****************************************************************************/
790 static void defer_open(struct share_mode_lock *lck,
791 struct timeval request_time,
792 struct timeval timeout,
793 struct smb_request *req,
794 struct deferred_open_record *state)
800 for (i=0; i<lck->num_share_modes; i++) {
801 struct share_mode_entry *e = &lck->share_modes[i];
803 if (!is_deferred_open_entry(e)) {
807 if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
808 DEBUG(0, ("Trying to defer an already deferred "
809 "request: mid=%d, exiting\n", req->mid));
810 exit_server("attempt to defer a deferred request");
814 /* End paranoia check */
816 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
817 "open entry for mid %u\n",
818 (unsigned int)request_time.tv_sec,
819 (unsigned int)request_time.tv_usec,
820 (unsigned int)req->mid));
822 if (!push_deferred_smb_message(req, request_time, timeout,
823 (char *)state, sizeof(*state))) {
824 exit_server("push_deferred_smb_message failed");
826 add_deferred_open(lck, req->mid, request_time, state->id);
829 * Push the MID of this packet on the signing queue.
830 * We only do this once, the first time we push the packet
831 * onto the deferred open queue, as this has a side effect
832 * of incrementing the response sequence number.
835 srv_defer_sign_response(req->mid);
839 /****************************************************************************
840 On overwrite open ensure that the attributes match.
841 ****************************************************************************/
843 static bool open_match_attributes(connection_struct *conn,
847 mode_t existing_unx_mode,
849 mode_t *returned_unx_mode)
851 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
853 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
854 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
856 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
857 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
858 *returned_unx_mode = new_unx_mode;
860 *returned_unx_mode = (mode_t)0;
863 DEBUG(10,("open_match_attributes: file %s old_dos_attr = 0x%x, "
864 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
865 "returned_unx_mode = 0%o\n",
867 (unsigned int)old_dos_attr,
868 (unsigned int)existing_unx_mode,
869 (unsigned int)new_dos_attr,
870 (unsigned int)*returned_unx_mode ));
872 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
873 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
874 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
875 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
879 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
880 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
881 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
888 /****************************************************************************
889 Special FCB or DOS processing in the case of a sharing violation.
890 Try and find a duplicated file handle.
891 ****************************************************************************/
893 static files_struct *fcb_or_dos_open(struct smb_request *req,
894 connection_struct *conn,
901 uint32 create_options)
904 files_struct *dup_fsp;
906 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
907 "file %s.\n", fname ));
909 for(fsp = file_find_di_first(id); fsp;
910 fsp = file_find_di_next(fsp)) {
912 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
913 "vuid = %u, file_pid = %u, private_options = 0x%x "
914 "access_mask = 0x%x\n", fsp->fsp_name,
915 fsp->fh->fd, (unsigned int)fsp->vuid,
916 (unsigned int)fsp->file_pid,
917 (unsigned int)fsp->fh->private_options,
918 (unsigned int)fsp->access_mask ));
920 if (fsp->fh->fd != -1 &&
922 fsp->file_pid == file_pid &&
923 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
924 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
925 (fsp->access_mask & FILE_WRITE_DATA) &&
926 strequal(fsp->fsp_name, fname)) {
927 DEBUG(10,("fcb_or_dos_open: file match\n"));
936 /* quite an insane set of semantics ... */
937 if (is_executable(fname) &&
938 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
939 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
943 /* We need to duplicate this fsp. */
944 if (!NT_STATUS_IS_OK(dup_file_fsp(req, fsp, access_mask, share_access,
945 create_options, &dup_fsp))) {
952 /****************************************************************************
953 Open a file with a share mode - old openX method - map into NTCreate.
954 ****************************************************************************/
956 bool map_open_params_to_ntcreate(const char *fname, int deny_mode, int open_func,
957 uint32 *paccess_mask,
959 uint32 *pcreate_disposition,
960 uint32 *pcreate_options)
964 uint32 create_disposition;
965 uint32 create_options = 0;
967 DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
968 "open_func = 0x%x\n",
969 fname, (unsigned int)deny_mode, (unsigned int)open_func ));
971 /* Create the NT compatible access_mask. */
972 switch (GET_OPENX_MODE(deny_mode)) {
973 case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
974 case DOS_OPEN_RDONLY:
975 access_mask = FILE_GENERIC_READ;
977 case DOS_OPEN_WRONLY:
978 access_mask = FILE_GENERIC_WRITE;
982 access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
985 DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
986 (unsigned int)GET_OPENX_MODE(deny_mode)));
990 /* Create the NT compatible create_disposition. */
992 case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
993 create_disposition = FILE_CREATE;
996 case OPENX_FILE_EXISTS_OPEN:
997 create_disposition = FILE_OPEN;
1000 case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
1001 create_disposition = FILE_OPEN_IF;
1004 case OPENX_FILE_EXISTS_TRUNCATE:
1005 create_disposition = FILE_OVERWRITE;
1008 case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
1009 create_disposition = FILE_OVERWRITE_IF;
1013 /* From samba4 - to be confirmed. */
1014 if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
1015 create_disposition = FILE_CREATE;
1018 DEBUG(10,("map_open_params_to_ntcreate: bad "
1019 "open_func 0x%x\n", (unsigned int)open_func));
1023 /* Create the NT compatible share modes. */
1024 switch (GET_DENY_MODE(deny_mode)) {
1026 share_mode = FILE_SHARE_NONE;
1030 share_mode = FILE_SHARE_READ;
1034 share_mode = FILE_SHARE_WRITE;
1038 share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
1042 create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS;
1043 if (is_executable(fname)) {
1044 share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
1046 if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
1047 share_mode = FILE_SHARE_READ;
1049 share_mode = FILE_SHARE_NONE;
1055 create_options |= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB;
1056 share_mode = FILE_SHARE_NONE;
1060 DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
1061 (unsigned int)GET_DENY_MODE(deny_mode) ));
1065 DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
1066 "share_mode = 0x%x, create_disposition = 0x%x, "
1067 "create_options = 0x%x\n",
1069 (unsigned int)access_mask,
1070 (unsigned int)share_mode,
1071 (unsigned int)create_disposition,
1072 (unsigned int)create_options ));
1075 *paccess_mask = access_mask;
1078 *pshare_mode = share_mode;
1080 if (pcreate_disposition) {
1081 *pcreate_disposition = create_disposition;
1083 if (pcreate_options) {
1084 *pcreate_options = create_options;
1091 static void schedule_defer_open(struct share_mode_lock *lck,
1092 struct timeval request_time,
1093 struct smb_request *req)
1095 struct deferred_open_record state;
1097 /* This is a relative time, added to the absolute
1098 request_time value to get the absolute timeout time.
1099 Note that if this is the second or greater time we enter
1100 this codepath for this particular request mid then
1101 request_time is left as the absolute time of the *first*
1102 time this request mid was processed. This is what allows
1103 the request to eventually time out. */
1105 struct timeval timeout;
1107 /* Normally the smbd we asked should respond within
1108 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1109 * the client did, give twice the timeout as a safety
1110 * measure here in case the other smbd is stuck
1111 * somewhere else. */
1113 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1115 /* Nothing actually uses state.delayed_for_oplocks
1116 but it's handy to differentiate in debug messages
1117 between a 30 second delay due to oplock break, and
1118 a 1 second delay for share mode conflicts. */
1120 state.delayed_for_oplocks = True;
1123 if (!request_timed_out(request_time, timeout)) {
1124 defer_open(lck, request_time, timeout, req, &state);
1128 /****************************************************************************
1129 Open a file with a share mode.
1130 ****************************************************************************/
1132 NTSTATUS open_file_ntcreate(connection_struct *conn,
1133 struct smb_request *req,
1135 SMB_STRUCT_STAT *psbuf,
1136 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1137 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1138 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1139 uint32 create_options, /* options such as delete on close. */
1140 uint32 new_dos_attributes, /* attributes used for new file. */
1141 int oplock_request, /* internal Samba oplock codes. */
1142 /* Information (FILE_EXISTS etc.) */
1144 files_struct **result)
1148 bool file_existed = VALID_STAT(*psbuf);
1149 bool def_acl = False;
1150 bool posix_open = False;
1151 bool new_file_created = False;
1153 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1154 files_struct *fsp = NULL;
1155 mode_t new_unx_mode = (mode_t)0;
1156 mode_t unx_mode = (mode_t)0;
1158 uint32 existing_dos_attributes = 0;
1159 struct pending_message_list *pml = NULL;
1160 struct timeval request_time = timeval_zero();
1161 struct share_mode_lock *lck = NULL;
1162 uint32 open_access_mask = access_mask;
1166 const char *newname;
1170 if (conn->printer) {
1172 * Printers are handled completely differently.
1173 * Most of the passed parameters are ignored.
1177 *pinfo = FILE_WAS_CREATED;
1180 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n", fname));
1182 return print_fsp_open(req, conn, fname, req->vuid, result);
1185 if (!parent_dirname_talloc(talloc_tos(), fname, &parent_dir,
1187 return NT_STATUS_NO_MEMORY;
1190 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1192 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1193 new_dos_attributes = 0;
1195 /* We add aARCH to this as this mode is only used if the file is
1197 unx_mode = unix_mode(conn, new_dos_attributes | aARCH, fname,
1201 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1202 "access_mask=0x%x share_access=0x%x "
1203 "create_disposition = 0x%x create_options=0x%x "
1204 "unix mode=0%o oplock_request=%d\n",
1205 fname, new_dos_attributes, access_mask, share_access,
1206 create_disposition, create_options, unx_mode,
1209 if ((access_mask & FILE_READ_DATA)||(access_mask & FILE_WRITE_DATA)) {
1210 DEBUG(10, ("open_file_ntcreate: adding FILE_READ_ATTRIBUTES "
1211 "to requested access_mask 0x%x, new mask 0x%x",
1213 access_mask | FILE_READ_ATTRIBUTES ));
1215 access_mask |= FILE_READ_ATTRIBUTES;
1218 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
1219 DEBUG(0, ("No smb request but not an internal only open!\n"));
1220 return NT_STATUS_INTERNAL_ERROR;
1224 * Only non-internal opens can be deferred at all
1228 && ((pml = get_open_deferred_message(req->mid)) != NULL)) {
1229 struct deferred_open_record *state =
1230 (struct deferred_open_record *)pml->private_data.data;
1232 /* Remember the absolute time of the original
1233 request with this mid. We'll use it later to
1234 see if this has timed out. */
1236 request_time = pml->request_time;
1238 /* Remove the deferred open entry under lock. */
1239 lck = get_share_mode_lock(talloc_tos(), state->id, NULL, NULL,
1242 DEBUG(0, ("could not get share mode lock\n"));
1244 del_deferred_open_entry(lck, req->mid);
1248 /* Ensure we don't reprocess this message. */
1249 remove_deferred_open_smb_message(req->mid);
1252 status = check_name(conn, fname);
1253 if (!NT_STATUS_IS_OK(status)) {
1258 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
1260 existing_dos_attributes = dos_mode(conn, fname, psbuf);
1264 /* ignore any oplock requests if oplocks are disabled */
1265 if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break ||
1266 IS_VETO_OPLOCK_PATH(conn, fname)) {
1267 /* Mask off everything except the private Samba bits. */
1268 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1271 /* this is for OS/2 long file names - say we don't support them */
1272 if (!lp_posix_pathnames() && strstr(fname,".+,;=[].")) {
1273 /* OS/2 Workplace shell fix may be main code stream in a later
1275 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1277 if (use_nt_status()) {
1278 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1280 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
1283 switch( create_disposition ) {
1285 * Currently we're using FILE_SUPERSEDE as the same as
1286 * FILE_OVERWRITE_IF but they really are
1287 * different. FILE_SUPERSEDE deletes an existing file
1288 * (requiring delete access) then recreates it.
1290 case FILE_SUPERSEDE:
1291 /* If file exists replace/overwrite. If file doesn't
1293 flags2 |= (O_CREAT | O_TRUNC);
1296 case FILE_OVERWRITE_IF:
1297 /* If file exists replace/overwrite. If file doesn't
1299 flags2 |= (O_CREAT | O_TRUNC);
1303 /* If file exists open. If file doesn't exist error. */
1304 if (!file_existed) {
1305 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1306 "requested for file %s and file "
1307 "doesn't exist.\n", fname ));
1309 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1313 case FILE_OVERWRITE:
1314 /* If file exists overwrite. If file doesn't exist
1316 if (!file_existed) {
1317 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1318 "requested for file %s and file "
1319 "doesn't exist.\n", fname ));
1321 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1327 /* If file exists error. If file doesn't exist
1330 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1331 "requested for file %s and file "
1332 "already exists.\n", fname ));
1333 if (S_ISDIR(psbuf->st_mode)) {
1338 return map_nt_error_from_unix(errno);
1340 flags2 |= (O_CREAT|O_EXCL);
1344 /* If file exists open. If file doesn't exist
1350 return NT_STATUS_INVALID_PARAMETER;
1353 /* We only care about matching attributes on file exists and
1356 if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
1357 (create_disposition == FILE_OVERWRITE_IF))) {
1358 if (!open_match_attributes(conn, fname,
1359 existing_dos_attributes,
1360 new_dos_attributes, psbuf->st_mode,
1361 unx_mode, &new_unx_mode)) {
1362 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1363 "for file %s (%x %x) (0%o, 0%o)\n",
1364 fname, existing_dos_attributes,
1366 (unsigned int)psbuf->st_mode,
1367 (unsigned int)unx_mode ));
1369 return NT_STATUS_ACCESS_DENIED;
1373 /* This is a nasty hack - must fix... JRA. */
1374 if (access_mask == MAXIMUM_ALLOWED_ACCESS) {
1375 open_access_mask = access_mask = FILE_GENERIC_ALL;
1379 * Convert GENERIC bits to specific bits.
1382 se_map_generic(&access_mask, &file_generic_mapping);
1383 open_access_mask = access_mask;
1385 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1386 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
1389 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1390 "access_mask=0x%x\n", fname, access_mask ));
1393 * Note that we ignore the append flag as append does not
1394 * mean the same thing under DOS and Unix.
1397 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
1398 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1399 /* DENY_DOS opens are always underlying read-write on the
1400 file handle, no matter what the requested access mask
1402 if ((create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1403 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
1413 * Currently we only look at FILE_WRITE_THROUGH for create options.
1417 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
1422 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
1426 if (!posix_open && !CAN_WRITE(conn)) {
1428 * We should really return a permission denied error if either
1429 * O_CREAT or O_TRUNC are set, but for compatibility with
1430 * older versions of Samba we just AND them out.
1432 flags2 &= ~(O_CREAT|O_TRUNC);
1436 * Ensure we can't write on a read-only share or file.
1439 if (flags != O_RDONLY && file_existed &&
1440 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
1441 DEBUG(5,("open_file_ntcreate: write access requested for "
1442 "file %s on read only %s\n",
1443 fname, !CAN_WRITE(conn) ? "share" : "file" ));
1445 return NT_STATUS_ACCESS_DENIED;
1448 status = file_new(req, conn, &fsp);
1449 if(!NT_STATUS_IS_OK(status)) {
1453 fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
1454 fsp->share_access = share_access;
1455 fsp->fh->private_options = create_options;
1456 fsp->access_mask = open_access_mask; /* We change this to the
1457 * requested access_mask after
1458 * the open is done. */
1459 fsp->posix_open = posix_open;
1461 /* Ensure no SAMBA_PRIVATE bits can be set. */
1462 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1464 if (timeval_is_zero(&request_time)) {
1465 request_time = fsp->open_time;
1469 struct timespec old_write_time = get_mtimespec(psbuf);
1470 id = vfs_file_id_from_sbuf(conn, psbuf);
1472 lck = get_share_mode_lock(talloc_tos(), id,
1474 fname, &old_write_time);
1477 file_free(req, fsp);
1478 DEBUG(0, ("Could not get share mode lock\n"));
1479 return NT_STATUS_SHARING_VIOLATION;
1482 /* First pass - send break only on batch oplocks. */
1484 && delay_for_oplocks(lck, fsp, req->mid, 1,
1486 schedule_defer_open(lck, request_time, req);
1488 file_free(req, fsp);
1489 return NT_STATUS_SHARING_VIOLATION;
1492 /* Use the client requested access mask here, not the one we
1494 status = open_mode_check(conn, fname, lck,
1495 access_mask, share_access,
1496 create_options, &file_existed);
1498 if (NT_STATUS_IS_OK(status)) {
1499 /* We might be going to allow this open. Check oplock
1501 /* Second pass - send break for both batch or
1502 * exclusive oplocks. */
1504 && delay_for_oplocks(lck, fsp, req->mid, 2,
1506 schedule_defer_open(lck, request_time, req);
1508 file_free(req, fsp);
1509 return NT_STATUS_SHARING_VIOLATION;
1513 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
1514 /* DELETE_PENDING is not deferred for a second */
1516 file_free(req, fsp);
1520 if (!NT_STATUS_IS_OK(status)) {
1521 uint32 can_access_mask;
1522 bool can_access = True;
1524 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
1526 /* Check if this can be done with the deny_dos and fcb
1528 if (create_options &
1529 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
1530 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
1531 files_struct *fsp_dup;
1534 DEBUG(0, ("DOS open without an SMB "
1537 file_free(req, fsp);
1538 return NT_STATUS_INTERNAL_ERROR;
1541 /* Use the client requested access mask here,
1542 * not the one we open with. */
1543 fsp_dup = fcb_or_dos_open(req, conn, fname, id,
1552 file_free(req, fsp);
1554 *pinfo = FILE_WAS_OPENED;
1556 conn->num_files_open++;
1558 return NT_STATUS_OK;
1563 * This next line is a subtlety we need for
1564 * MS-Access. If a file open will fail due to share
1565 * permissions and also for security (access) reasons,
1566 * we need to return the access failed error, not the
1567 * share error. We can't open the file due to kernel
1568 * oplock deadlock (it's possible we failed above on
1569 * the open_mode_check()) so use a userspace check.
1572 if (flags & O_RDWR) {
1573 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
1574 } else if (flags & O_WRONLY) {
1575 can_access_mask = FILE_WRITE_DATA;
1577 can_access_mask = FILE_READ_DATA;
1580 if (((can_access_mask & FILE_WRITE_DATA) && !CAN_WRITE(conn)) ||
1581 !can_access_file_data(conn,fname,psbuf,can_access_mask)) {
1586 * If we're returning a share violation, ensure we
1587 * cope with the braindead 1 second delay.
1590 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
1591 lp_defer_sharing_violations()) {
1592 struct timeval timeout;
1593 struct deferred_open_record state;
1596 /* this is a hack to speed up torture tests
1598 timeout_usecs = lp_parm_int(SNUM(conn),
1599 "smbd","sharedelay",
1600 SHARING_VIOLATION_USEC_WAIT);
1602 /* This is a relative time, added to the absolute
1603 request_time value to get the absolute timeout time.
1604 Note that if this is the second or greater time we enter
1605 this codepath for this particular request mid then
1606 request_time is left as the absolute time of the *first*
1607 time this request mid was processed. This is what allows
1608 the request to eventually time out. */
1610 timeout = timeval_set(0, timeout_usecs);
1612 /* Nothing actually uses state.delayed_for_oplocks
1613 but it's handy to differentiate in debug messages
1614 between a 30 second delay due to oplock break, and
1615 a 1 second delay for share mode conflicts. */
1617 state.delayed_for_oplocks = False;
1621 && !request_timed_out(request_time,
1623 defer_open(lck, request_time, timeout,
1631 * We have detected a sharing violation here
1632 * so return the correct error code
1634 status = NT_STATUS_SHARING_VIOLATION;
1636 status = NT_STATUS_ACCESS_DENIED;
1638 file_free(req, fsp);
1643 * We exit this block with the share entry *locked*.....
1647 SMB_ASSERT(!file_existed || (lck != NULL));
1650 * Ensure we pay attention to default ACLs on directories if required.
1653 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
1654 (def_acl = directory_has_default_acl(conn, parent_dir))) {
1658 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
1659 "access_mask = 0x%x, open_access_mask = 0x%x\n",
1660 (unsigned int)flags, (unsigned int)flags2,
1661 (unsigned int)unx_mode, (unsigned int)access_mask,
1662 (unsigned int)open_access_mask));
1665 * open_file strips any O_TRUNC flags itself.
1668 fsp_open = open_file(fsp, conn, req, parent_dir, newname, fname, psbuf,
1669 flags|flags2, unx_mode, access_mask,
1672 if (!NT_STATUS_IS_OK(fsp_open)) {
1676 file_free(req, fsp);
1680 if (!file_existed) {
1681 struct timespec old_write_time = get_mtimespec(psbuf);
1683 * Deal with the race condition where two smbd's detect the
1684 * file doesn't exist and do the create at the same time. One
1685 * of them will win and set a share mode, the other (ie. this
1686 * one) should check if the requested share mode for this
1687 * create is allowed.
1691 * Now the file exists and fsp is successfully opened,
1692 * fsp->dev and fsp->inode are valid and should replace the
1693 * dev=0,inode=0 from a non existent file. Spotted by
1694 * Nadav Danieli <nadavd@exanet.com>. JRA.
1699 lck = get_share_mode_lock(talloc_tos(), id,
1701 fname, &old_write_time);
1704 DEBUG(0, ("open_file_ntcreate: Could not get share "
1705 "mode lock for %s\n", fname));
1707 file_free(req, fsp);
1708 return NT_STATUS_SHARING_VIOLATION;
1711 /* First pass - send break only on batch oplocks. */
1713 && delay_for_oplocks(lck, fsp, req->mid, 1,
1715 schedule_defer_open(lck, request_time, req);
1718 file_free(req, fsp);
1719 return NT_STATUS_SHARING_VIOLATION;
1722 status = open_mode_check(conn, fname, lck,
1723 access_mask, share_access,
1724 create_options, &file_existed);
1726 if (NT_STATUS_IS_OK(status)) {
1727 /* We might be going to allow this open. Check oplock
1729 /* Second pass - send break for both batch or
1730 * exclusive oplocks. */
1732 && delay_for_oplocks(lck, fsp, req->mid, 2,
1734 schedule_defer_open(lck, request_time, req);
1737 file_free(req, fsp);
1738 return NT_STATUS_SHARING_VIOLATION;
1742 if (!NT_STATUS_IS_OK(status)) {
1743 struct deferred_open_record state;
1746 file_free(req, fsp);
1748 state.delayed_for_oplocks = False;
1751 /* Do it all over again immediately. In the second
1752 * round we will find that the file existed and handle
1753 * the DELETE_PENDING and FCB cases correctly. No need
1754 * to duplicate the code here. Essentially this is a
1755 * "goto top of this function", but don't tell
1759 defer_open(lck, request_time, timeval_zero(),
1767 * We exit this block with the share entry *locked*.....
1772 SMB_ASSERT(lck != NULL);
1774 /* note that we ignore failure for the following. It is
1775 basically a hack for NFS, and NFS will never set one of
1776 these only read them. Nobody but Samba can ever set a deny
1777 mode and we have already checked our more authoritative
1778 locking database for permission to set this deny mode. If
1779 the kernel refuses the operations then the kernel is wrong.
1780 note that GPFS supports it as well - jmcd */
1782 if (fsp->fh->fd != -1) {
1783 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
1784 if(ret_flock == -1 ){
1788 file_free(req, fsp);
1790 return NT_STATUS_SHARING_VIOLATION;
1795 * At this point onwards, we can guarentee that the share entry
1796 * is locked, whether we created the file or not, and that the
1797 * deny mode is compatible with all current opens.
1801 * If requested, truncate the file.
1804 if (flags2&O_TRUNC) {
1806 * We are modifing the file after open - update the stat
1809 if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
1810 (SMB_VFS_FSTAT(fsp, psbuf)==-1)) {
1811 status = map_nt_error_from_unix(errno);
1814 file_free(req, fsp);
1819 /* Record the options we were opened with. */
1820 fsp->share_access = share_access;
1821 fsp->fh->private_options = create_options;
1822 fsp->access_mask = access_mask;
1825 /* stat opens on existing files don't get oplocks. */
1826 if (is_stat_open(open_access_mask)) {
1827 fsp->oplock_type = NO_OPLOCK;
1830 if (!(flags2 & O_TRUNC)) {
1831 info = FILE_WAS_OPENED;
1833 info = FILE_WAS_OVERWRITTEN;
1836 info = FILE_WAS_CREATED;
1844 * Setup the oplock info in both the shared memory and
1848 if ((fsp->oplock_type != NO_OPLOCK) &&
1849 (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
1850 if (!set_file_oplock(fsp, fsp->oplock_type)) {
1851 /* Could not get the kernel oplock */
1852 fsp->oplock_type = NO_OPLOCK;
1856 if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
1857 new_file_created = True;
1860 set_share_mode(lck, fsp, conn->server_info->utok.uid, 0,
1861 fsp->oplock_type, new_file_created);
1863 /* Handle strange delete on close create semantics. */
1864 if ((create_options & FILE_DELETE_ON_CLOSE)
1865 && (((conn->fs_capabilities & FILE_NAMED_STREAMS)
1866 && is_ntfs_stream_name(fname))
1867 || can_set_initial_delete_on_close(lck))) {
1868 status = can_set_delete_on_close(fsp, True, new_dos_attributes);
1870 if (!NT_STATUS_IS_OK(status)) {
1871 /* Remember to delete the mode we just added. */
1872 del_share_mode(lck, fsp);
1875 file_free(req, fsp);
1878 /* Note that here we set the *inital* delete on close flag,
1879 not the regular one. The magic gets handled in close. */
1880 fsp->initial_delete_on_close = True;
1883 if (new_file_created) {
1884 /* Files should be initially set as archive */
1885 if (lp_map_archive(SNUM(conn)) ||
1886 lp_store_dos_attributes(SNUM(conn))) {
1888 SMB_STRUCT_STAT tmp_sbuf;
1889 SET_STAT_INVALID(tmp_sbuf);
1890 if (file_set_dosmode(
1892 new_dos_attributes | aARCH,
1893 &tmp_sbuf, parent_dir,
1895 unx_mode = tmp_sbuf.st_mode;
1902 * Take care of inherited ACLs on created files - if default ACL not
1906 if (!posix_open && !file_existed && !def_acl) {
1908 int saved_errno = errno; /* We might get ENOSYS in the next
1911 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
1913 errno = saved_errno; /* Ignore ENOSYS */
1916 } else if (new_unx_mode) {
1920 /* Attributes need changing. File already existed. */
1923 int saved_errno = errno; /* We might get ENOSYS in the
1925 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
1927 if (ret == -1 && errno == ENOSYS) {
1928 errno = saved_errno; /* Ignore ENOSYS */
1930 DEBUG(5, ("open_file_ntcreate: reset "
1931 "attributes of file %s to 0%o\n",
1932 fname, (unsigned int)new_unx_mode));
1933 ret = 0; /* Don't do the fchmod below. */
1938 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
1939 DEBUG(5, ("open_file_ntcreate: failed to reset "
1940 "attributes of file %s to 0%o\n",
1941 fname, (unsigned int)new_unx_mode));
1944 /* If this is a successful open, we must remove any deferred open
1947 del_deferred_open_entry(lck, req->mid);
1951 conn->num_files_open++;
1954 return NT_STATUS_OK;
1957 /****************************************************************************
1958 Open a file for for write to ensure that we can fchmod it.
1959 ****************************************************************************/
1961 NTSTATUS open_file_fchmod(struct smb_request *req, connection_struct *conn,
1963 SMB_STRUCT_STAT *psbuf, files_struct **result)
1965 files_struct *fsp = NULL;
1968 if (!VALID_STAT(*psbuf)) {
1969 return NT_STATUS_INVALID_PARAMETER;
1972 status = file_new(req, conn, &fsp);
1973 if(!NT_STATUS_IS_OK(status)) {
1977 /* note! we must use a non-zero desired access or we don't get
1978 a real file descriptor. Oh what a twisted web we weave. */
1979 status = open_file(fsp, conn, NULL, NULL, NULL, fname, psbuf, O_WRONLY,
1980 0, FILE_WRITE_DATA, FILE_WRITE_DATA);
1983 * This is not a user visible file open.
1984 * Don't set a share mode and don't increment
1985 * the conn->num_files_open.
1988 if (!NT_STATUS_IS_OK(status)) {
1989 file_free(req, fsp);
1994 return NT_STATUS_OK;
1997 /****************************************************************************
1998 Close the fchmod file fd - ensure no locks are lost.
1999 ****************************************************************************/
2001 NTSTATUS close_file_fchmod(struct smb_request *req, files_struct *fsp)
2003 NTSTATUS status = fd_close(fsp);
2004 file_free(req, fsp);
2008 static NTSTATUS mkdir_internal(connection_struct *conn,
2010 uint32 file_attributes,
2011 SMB_STRUCT_STAT *psbuf)
2015 const char *dirname;
2017 bool posix_open = false;
2019 if(!CAN_WRITE(conn)) {
2020 DEBUG(5,("mkdir_internal: failing create on read-only share "
2021 "%s\n", lp_servicename(SNUM(conn))));
2022 return NT_STATUS_ACCESS_DENIED;
2025 status = check_name(conn, name);
2026 if (!NT_STATUS_IS_OK(status)) {
2030 if (!parent_dirname_talloc(talloc_tos(), name, &parent_dir,
2032 return NT_STATUS_NO_MEMORY;
2035 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2037 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2039 mode = unix_mode(conn, aDIR, name, parent_dir);
2042 if (SMB_VFS_MKDIR(conn, name, mode) != 0) {
2043 return map_nt_error_from_unix(errno);
2046 /* Ensure we're checking for a symlink here.... */
2047 /* We don't want to get caught by a symlink racer. */
2049 if (SMB_VFS_LSTAT(conn, name, psbuf) == -1) {
2050 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2051 name, strerror(errno)));
2052 return map_nt_error_from_unix(errno);
2055 if (!S_ISDIR(psbuf->st_mode)) {
2056 DEBUG(0, ("Directory just '%s' created is not a directory\n",
2058 return NT_STATUS_ACCESS_DENIED;
2061 if (lp_store_dos_attributes(SNUM(conn))) {
2063 file_set_dosmode(conn, name,
2064 file_attributes | aDIR, NULL,
2070 if (lp_inherit_perms(SNUM(conn))) {
2071 inherit_access_posix_acl(conn, parent_dir, name, mode);
2074 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
2076 * Check if high bits should have been set,
2077 * then (if bits are missing): add them.
2078 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2081 if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) && (mode & ~psbuf->st_mode)) {
2082 SMB_VFS_CHMOD(conn, name,
2083 psbuf->st_mode | (mode & ~psbuf->st_mode));
2087 /* Change the owner if required. */
2088 if (lp_inherit_owner(SNUM(conn))) {
2089 change_dir_owner_to_parent(conn, parent_dir, name, psbuf);
2092 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2095 return NT_STATUS_OK;
2098 /****************************************************************************
2099 Open a directory from an NT SMB call.
2100 ****************************************************************************/
2102 NTSTATUS open_directory(connection_struct *conn,
2103 struct smb_request *req,
2105 SMB_STRUCT_STAT *psbuf,
2107 uint32 share_access,
2108 uint32 create_disposition,
2109 uint32 create_options,
2110 uint32 file_attributes,
2112 files_struct **result)
2114 files_struct *fsp = NULL;
2115 bool dir_existed = VALID_STAT(*psbuf) ? True : False;
2116 struct share_mode_lock *lck = NULL;
2118 struct timespec mtimespec;
2121 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2122 "share_access = 0x%x create_options = 0x%x, "
2123 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2125 (unsigned int)access_mask,
2126 (unsigned int)share_access,
2127 (unsigned int)create_options,
2128 (unsigned int)create_disposition,
2129 (unsigned int)file_attributes));
2131 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
2132 (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
2133 is_ntfs_stream_name(fname)) {
2134 DEBUG(2, ("open_directory: %s is a stream name!\n", fname));
2135 return NT_STATUS_NOT_A_DIRECTORY;
2138 switch( create_disposition ) {
2141 info = FILE_WAS_OPENED;
2144 * We want to follow symlinks here.
2147 if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
2148 return map_nt_error_from_unix(errno);
2155 /* If directory exists error. If directory doesn't
2158 status = mkdir_internal(conn,
2163 if (!NT_STATUS_IS_OK(status)) {
2164 DEBUG(2, ("open_directory: unable to create "
2165 "%s. Error was %s\n", fname,
2166 nt_errstr(status)));
2170 info = FILE_WAS_CREATED;
2175 * If directory exists open. If directory doesn't
2179 status = mkdir_internal(conn,
2184 if (NT_STATUS_IS_OK(status)) {
2185 info = FILE_WAS_CREATED;
2188 if (NT_STATUS_EQUAL(status,
2189 NT_STATUS_OBJECT_NAME_COLLISION)) {
2190 info = FILE_WAS_OPENED;
2191 status = NT_STATUS_OK;
2196 case FILE_SUPERSEDE:
2197 case FILE_OVERWRITE:
2198 case FILE_OVERWRITE_IF:
2200 DEBUG(5,("open_directory: invalid create_disposition "
2201 "0x%x for directory %s\n",
2202 (unsigned int)create_disposition, fname));
2203 return NT_STATUS_INVALID_PARAMETER;
2206 if(!S_ISDIR(psbuf->st_mode)) {
2207 DEBUG(5,("open_directory: %s is not a directory !\n",
2209 return NT_STATUS_NOT_A_DIRECTORY;
2212 status = file_new(req, conn, &fsp);
2213 if(!NT_STATUS_IS_OK(status)) {
2218 * Setup the files_struct for it.
2221 fsp->mode = psbuf->st_mode;
2222 fsp->file_id = vfs_file_id_from_sbuf(conn, psbuf);
2223 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
2224 fsp->file_pid = req ? req->smbpid : 0;
2225 fsp->can_lock = False;
2226 fsp->can_read = False;
2227 fsp->can_write = False;
2229 fsp->share_access = share_access;
2230 fsp->fh->private_options = create_options;
2231 fsp->access_mask = access_mask;
2233 fsp->print_file = False;
2234 fsp->modified = False;
2235 fsp->oplock_type = NO_OPLOCK;
2236 fsp->sent_oplock_break = NO_BREAK_SENT;
2237 fsp->is_directory = True;
2238 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
2240 string_set(&fsp->fsp_name,fname);
2242 mtimespec = get_mtimespec(psbuf);
2244 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
2249 DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
2250 file_free(req, fsp);
2251 return NT_STATUS_SHARING_VIOLATION;
2254 status = open_mode_check(conn, fname, lck,
2255 access_mask, share_access,
2256 create_options, &dir_existed);
2258 if (!NT_STATUS_IS_OK(status)) {
2260 file_free(req, fsp);
2264 set_share_mode(lck, fsp, conn->server_info->utok.uid, 0, NO_OPLOCK,
2267 /* For directories the delete on close bit at open time seems
2268 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2269 if (create_options & FILE_DELETE_ON_CLOSE) {
2270 status = can_set_delete_on_close(fsp, True, 0);
2271 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
2273 file_free(req, fsp);
2277 if (NT_STATUS_IS_OK(status)) {
2278 /* Note that here we set the *inital* delete on close flag,
2279 not the regular one. The magic gets handled in close. */
2280 fsp->initial_delete_on_close = True;
2290 conn->num_files_open++;
2293 return NT_STATUS_OK;
2296 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req, const char *directory)
2299 SMB_STRUCT_STAT sbuf;
2302 SET_STAT_INVALID(sbuf);
2304 status = open_directory(conn, req, directory, &sbuf,
2305 FILE_READ_ATTRIBUTES, /* Just a stat open */
2306 FILE_SHARE_NONE, /* Ignored for stat opens */
2309 FILE_ATTRIBUTE_DIRECTORY,
2313 if (NT_STATUS_IS_OK(status)) {
2314 close_file(req, fsp, NORMAL_CLOSE);
2320 /****************************************************************************
2321 Receive notification that one of our open files has been renamed by another
2323 ****************************************************************************/
2325 void msg_file_was_renamed(struct messaging_context *msg,
2328 struct server_id server_id,
2332 char *frm = (char *)data->data;
2334 const char *sharepath;
2335 const char *newname;
2338 if (data->data == NULL
2339 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
2340 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
2341 (int)data->length));
2345 /* Unpack the message. */
2346 pull_file_id_16(frm, &id);
2347 sharepath = &frm[16];
2348 newname = sharepath + strlen(sharepath) + 1;
2349 sp_len = strlen(sharepath);
2351 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
2353 sharepath, newname, file_id_string_tos(&id)));
2355 for(fsp = file_find_di_first(id); fsp; fsp = file_find_di_next(fsp)) {
2356 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
2357 DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
2358 fsp->fnum, fsp->fsp_name, newname ));
2359 string_set(&fsp->fsp_name, newname);
2362 /* Now we have the complete path we can work out if this is
2363 actually within this share and adjust newname accordingly. */
2364 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
2365 "not sharepath %s) "
2366 "fnum %d from %s -> %s\n",
2367 fsp->conn->connectpath,
2376 struct case_semantics_state {
2377 connection_struct *conn;
2378 bool case_sensitive;
2380 bool short_case_preserve;
2383 /****************************************************************************
2384 Restore case semantics.
2385 ****************************************************************************/
2386 static int restore_case_semantics(struct case_semantics_state *state)
2388 state->conn->case_sensitive = state->case_sensitive;
2389 state->conn->case_preserve = state->case_preserve;
2390 state->conn->short_case_preserve = state->short_case_preserve;
2394 /****************************************************************************
2395 Save case semantics.
2396 ****************************************************************************/
2397 static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
2398 connection_struct *conn)
2400 struct case_semantics_state *result;
2402 if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
2403 DEBUG(0, ("talloc failed\n"));
2407 result->conn = conn;
2408 result->case_sensitive = conn->case_sensitive;
2409 result->case_preserve = conn->case_preserve;
2410 result->short_case_preserve = conn->short_case_preserve;
2413 conn->case_sensitive = True;
2414 conn->case_preserve = True;
2415 conn->short_case_preserve = True;
2417 talloc_set_destructor(result, restore_case_semantics);
2423 * If a main file is opened for delete, all streams need to be checked for
2424 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
2425 * If that works, delete them all by setting the delete on close and close.
2428 static NTSTATUS open_streams_for_delete(connection_struct *conn,
2431 struct stream_struct *stream_info;
2432 files_struct **streams;
2434 unsigned int num_streams;
2435 TALLOC_CTX *frame = talloc_stackframe();
2438 status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
2439 &num_streams, &stream_info);
2441 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
2442 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
2443 DEBUG(10, ("no streams around\n"));
2445 return NT_STATUS_OK;
2448 if (!NT_STATUS_IS_OK(status)) {
2449 DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
2450 nt_errstr(status)));
2454 DEBUG(10, ("open_streams_for_delete found %d streams\n",
2457 if (num_streams == 0) {
2459 return NT_STATUS_OK;
2462 streams = TALLOC_ARRAY(talloc_tos(), files_struct *, num_streams);
2463 if (streams == NULL) {
2464 DEBUG(0, ("talloc failed\n"));
2465 status = NT_STATUS_NO_MEMORY;
2469 for (i=0; i<num_streams; i++) {
2472 if (strequal(stream_info[i].name, "::$DATA")) {
2477 streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
2478 stream_info[i].name);
2480 if (streamname == NULL) {
2481 DEBUG(0, ("talloc_aprintf failed\n"));
2482 status = NT_STATUS_NO_MEMORY;
2486 status = create_file_unixpath
2489 streamname, /* fname */
2490 DELETE_ACCESS, /* access_mask */
2491 FILE_SHARE_READ | FILE_SHARE_WRITE
2492 | FILE_SHARE_DELETE, /* share_access */
2493 FILE_OPEN, /* create_disposition*/
2494 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* create_options */
2495 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
2496 0, /* oplock_request */
2497 0, /* allocation_size */
2500 &streams[i], /* result */
2504 TALLOC_FREE(streamname);
2506 if (!NT_STATUS_IS_OK(status)) {
2507 DEBUG(10, ("Could not open stream %s: %s\n",
2508 streamname, nt_errstr(status)));
2514 * don't touch the variable "status" beyond this point :-)
2517 for (i -= 1 ; i >= 0; i--) {
2518 if (streams[i] == NULL) {
2522 DEBUG(10, ("Closing stream # %d, %s\n", i,
2523 streams[i]->fsp_name));
2524 close_file(NULL, streams[i], NORMAL_CLOSE);
2533 * Wrapper around open_file_ntcreate and open_directory
2536 NTSTATUS create_file_unixpath(connection_struct *conn,
2537 struct smb_request *req,
2539 uint32_t access_mask,
2540 uint32_t share_access,
2541 uint32_t create_disposition,
2542 uint32_t create_options,
2543 uint32_t file_attributes,
2544 uint32_t oplock_request,
2545 uint64_t allocation_size,
2546 struct security_descriptor *sd,
2547 struct ea_list *ea_list,
2549 files_struct **result,
2551 SMB_STRUCT_STAT *psbuf)
2553 SMB_STRUCT_STAT sbuf;
2554 int info = FILE_WAS_OPENED;
2555 files_struct *base_fsp = NULL;
2556 files_struct *fsp = NULL;
2559 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
2560 "file_attributes = 0x%x, share_access = 0x%x, "
2561 "create_disposition = 0x%x create_options = 0x%x "
2562 "oplock_request = 0x%x ea_list = 0x%p, sd = 0x%p, "
2564 (unsigned int)access_mask,
2565 (unsigned int)file_attributes,
2566 (unsigned int)share_access,
2567 (unsigned int)create_disposition,
2568 (unsigned int)create_options,
2569 (unsigned int)oplock_request,
2570 ea_list, sd, fname));
2572 if (create_options & FILE_OPEN_BY_FILE_ID) {
2573 status = NT_STATUS_NOT_SUPPORTED;
2577 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
2578 status = NT_STATUS_INVALID_PARAMETER;
2583 oplock_request |= INTERNAL_OPEN_ONLY;
2586 if (psbuf != NULL) {
2590 if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
2591 SET_STAT_INVALID(sbuf);
2595 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
2596 && (access_mask & DELETE_ACCESS)
2597 && !is_ntfs_stream_name(fname)) {
2599 * We can't open a file with DELETE access if any of the
2600 * streams is open without FILE_SHARE_DELETE
2602 status = open_streams_for_delete(conn, fname);
2604 if (!NT_STATUS_IS_OK(status)) {
2609 /* This is the correct thing to do (check every time) but can_delete
2610 * is expensive (it may have to read the parent directory
2611 * permissions). So for now we're not doing it unless we have a strong
2612 * hint the client is really going to delete this file. If the client
2613 * is forcing FILE_CREATE let the filesystem take care of the
2616 /* Setting FILE_SHARE_DELETE is the hint. */
2618 if (lp_acl_check_permissions(SNUM(conn))
2619 && (create_disposition != FILE_CREATE)
2620 && (share_access & FILE_SHARE_DELETE)
2621 && (access_mask & DELETE_ACCESS)
2622 && (!can_delete_file_in_directory(conn, fname))) {
2623 status = NT_STATUS_ACCESS_DENIED;
2628 /* We need to support SeSecurityPrivilege for this. */
2629 if ((access_mask & SEC_RIGHT_SYSTEM_SECURITY) &&
2630 !user_has_privileges(current_user.nt_user_token,
2632 status = NT_STATUS_PRIVILEGE_NOT_HELD;
2637 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
2638 && is_ntfs_stream_name(fname)
2639 && (!(create_options & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
2641 uint32 base_create_disposition;
2643 if (create_options & FILE_DIRECTORY_FILE) {
2644 status = NT_STATUS_NOT_A_DIRECTORY;
2648 status = split_ntfs_stream_name(talloc_tos(), fname,
2650 if (!NT_STATUS_IS_OK(status)) {
2651 DEBUG(10, ("create_file_unixpath: "
2652 "split_ntfs_stream_name failed: %s\n",
2653 nt_errstr(status)));
2657 SMB_ASSERT(!is_ntfs_stream_name(base)); /* paranoia.. */
2659 switch (create_disposition) {
2661 base_create_disposition = FILE_OPEN;
2664 base_create_disposition = FILE_OPEN_IF;
2668 status = create_file_unixpath(conn, NULL, base, 0,
2671 | FILE_SHARE_DELETE,
2672 base_create_disposition,
2673 0, 0, 0, 0, NULL, NULL,
2674 &base_fsp, NULL, NULL);
2675 if (!NT_STATUS_IS_OK(status)) {
2676 DEBUG(10, ("create_file_unixpath for base %s failed: "
2677 "%s\n", base, nt_errstr(status)));
2683 * If it's a request for a directory open, deal with it separately.
2686 if (create_options & FILE_DIRECTORY_FILE) {
2688 if (create_options & FILE_NON_DIRECTORY_FILE) {
2689 status = NT_STATUS_INVALID_PARAMETER;
2693 /* Can't open a temp directory. IFS kit test. */
2694 if (file_attributes & FILE_ATTRIBUTE_TEMPORARY) {
2695 status = NT_STATUS_INVALID_PARAMETER;
2700 * We will get a create directory here if the Win32
2701 * app specified a security descriptor in the
2702 * CreateDirectory() call.
2706 status = open_directory(
2707 conn, req, fname, &sbuf, access_mask, share_access,
2708 create_disposition, create_options, file_attributes,
2713 * Ordinary file case.
2716 status = open_file_ntcreate(
2717 conn, req, fname, &sbuf, access_mask, share_access,
2718 create_disposition, create_options, file_attributes,
2719 oplock_request, &info, &fsp);
2721 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
2724 * Fail the open if it was explicitly a non-directory
2728 if (create_options & FILE_NON_DIRECTORY_FILE) {
2729 status = NT_STATUS_FILE_IS_A_DIRECTORY;
2734 status = open_directory(
2735 conn, req, fname, &sbuf, access_mask,
2736 share_access, create_disposition,
2737 create_options, file_attributes,
2742 if (!NT_STATUS_IS_OK(status)) {
2747 * According to the MS documentation, the only time the security
2748 * descriptor is applied to the opened file is iff we *created* the
2749 * file; an existing file stays the same.
2751 * Also, it seems (from observation) that you can open the file with
2752 * any access mask but you can still write the sd. We need to override
2753 * the granted access before we call set_sd
2754 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
2757 if ((sd != NULL) && (info == FILE_WAS_CREATED)
2758 && lp_nt_acl_support(SNUM(conn))) {
2760 uint32_t sec_info_sent = ALL_SECURITY_INFORMATION;
2761 uint32_t saved_access_mask = fsp->access_mask;
2763 if (sd->owner_sid == NULL) {
2764 sec_info_sent &= ~OWNER_SECURITY_INFORMATION;
2766 if (sd->group_sid == NULL) {
2767 sec_info_sent &= ~GROUP_SECURITY_INFORMATION;
2769 if (sd->sacl == NULL) {
2770 sec_info_sent &= ~SACL_SECURITY_INFORMATION;
2772 if (sd->dacl == NULL) {
2773 sec_info_sent &= ~DACL_SECURITY_INFORMATION;
2776 fsp->access_mask = FILE_GENERIC_ALL;
2778 /* Convert all the generic bits. */
2779 security_acl_map_generic(sd->dacl, &file_generic_mapping);
2780 security_acl_map_generic(sd->sacl, &file_generic_mapping);
2782 status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
2784 fsp->access_mask = saved_access_mask;
2786 if (!NT_STATUS_IS_OK(status)) {
2791 if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
2792 status = set_ea(conn, fsp, fname, ea_list);
2793 if (!NT_STATUS_IS_OK(status)) {
2798 if (!fsp->is_directory && S_ISDIR(sbuf.st_mode)) {
2799 status = NT_STATUS_ACCESS_DENIED;
2803 /* Save the requested allocation size. */
2804 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
2806 && (allocation_size > sbuf.st_size)) {
2807 fsp->initial_allocation_size = smb_roundup(
2808 fsp->conn, allocation_size);
2809 if (fsp->is_directory) {
2810 /* Can't set allocation size on a directory. */
2811 status = NT_STATUS_ACCESS_DENIED;
2814 if (vfs_allocate_file_space(
2815 fsp, fsp->initial_allocation_size) == -1) {
2816 status = NT_STATUS_DISK_FULL;
2820 fsp->initial_allocation_size = smb_roundup(
2821 fsp->conn, (uint64_t)sbuf.st_size);
2825 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
2828 * Set fsp->base_fsp late enough that we can't "goto fail" anymore. In
2829 * the fail: branch we call close_file(fsp, ERROR_CLOSE) which would
2830 * also close fsp->base_fsp which we have to also do explicitly in
2831 * this routine here, as not in all "goto fail:" we have the fsp set
2832 * up already to be initialized with the base_fsp.
2835 fsp->base_fsp = base_fsp;
2838 if (pinfo != NULL) {
2841 if (psbuf != NULL) {
2842 if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) {
2846 SMB_VFS_FSTAT(fsp, psbuf);
2849 return NT_STATUS_OK;
2852 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
2855 close_file(req, fsp, ERROR_CLOSE);
2858 if (base_fsp != NULL) {
2859 close_file(req, base_fsp, ERROR_CLOSE);
2865 NTSTATUS create_file(connection_struct *conn,
2866 struct smb_request *req,
2867 uint16_t root_dir_fid,
2869 uint32_t access_mask,
2870 uint32_t share_access,
2871 uint32_t create_disposition,
2872 uint32_t create_options,
2873 uint32_t file_attributes,
2874 uint32_t oplock_request,
2875 uint64_t allocation_size,
2876 struct security_descriptor *sd,
2877 struct ea_list *ea_list,
2879 files_struct **result,
2881 SMB_STRUCT_STAT *psbuf)
2883 struct case_semantics_state *case_state = NULL;
2884 SMB_STRUCT_STAT sbuf;
2885 int info = FILE_WAS_OPENED;
2886 files_struct *fsp = NULL;
2889 DEBUG(10,("create_file: access_mask = 0x%x "
2890 "file_attributes = 0x%x, share_access = 0x%x, "
2891 "create_disposition = 0x%x create_options = 0x%x "
2892 "oplock_request = 0x%x "
2893 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
2895 (unsigned int)access_mask,
2896 (unsigned int)file_attributes,
2897 (unsigned int)share_access,
2898 (unsigned int)create_disposition,
2899 (unsigned int)create_options,
2900 (unsigned int)oplock_request,
2901 (unsigned int)root_dir_fid,
2902 ea_list, sd, fname));
2905 * Get the file name.
2908 if (root_dir_fid != 0) {
2910 * This filename is relative to a directory fid.
2912 char *parent_fname = NULL;
2913 files_struct *dir_fsp = file_fsp(req, root_dir_fid);
2915 if (dir_fsp == NULL) {
2916 status = NT_STATUS_INVALID_HANDLE;
2920 if (!dir_fsp->is_directory) {
2923 * Check to see if this is a mac fork of some kind.
2926 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
2927 is_ntfs_stream_name(fname)) {
2928 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
2933 we need to handle the case when we get a
2934 relative open relative to a file and the
2935 pathname is blank - this is a reopen!
2936 (hint from demyn plantenberg)
2939 status = NT_STATUS_INVALID_HANDLE;
2943 if (ISDOT(dir_fsp->fsp_name)) {
2945 * We're at the toplevel dir, the final file name
2946 * must not contain ./, as this is filtered out
2947 * normally by srvstr_get_path and unix_convert
2948 * explicitly rejects paths containing ./.
2950 parent_fname = talloc_strdup(talloc_tos(), "");
2951 if (parent_fname == NULL) {
2952 status = NT_STATUS_NO_MEMORY;
2956 size_t dir_name_len = strlen(dir_fsp->fsp_name);
2959 * Copy in the base directory name.
2962 parent_fname = TALLOC_ARRAY(talloc_tos(), char,
2964 if (parent_fname == NULL) {
2965 status = NT_STATUS_NO_MEMORY;
2968 memcpy(parent_fname, dir_fsp->fsp_name,
2972 * Ensure it ends in a '/'.
2973 * We used TALLOC_SIZE +2 to add space for the '/'.
2977 && (parent_fname[dir_name_len-1] != '\\')
2978 && (parent_fname[dir_name_len-1] != '/')) {
2979 parent_fname[dir_name_len] = '/';
2980 parent_fname[dir_name_len+1] = '\0';
2984 fname = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
2986 if (fname == NULL) {
2987 status = NT_STATUS_NO_MEMORY;
2993 * Check to see if this is a mac fork of some kind.
2996 if (is_ntfs_stream_name(fname)) {
2997 enum FAKE_FILE_TYPE fake_file_type;
2999 fake_file_type = is_fake_file(fname);
3001 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
3004 * Here we go! support for changing the disk quotas
3007 * We need to fake up to open this MAGIC QUOTA file
3008 * and return a valid FID.
3010 * w2k close this file directly after openening xp
3011 * also tries a QUERY_FILE_INFO on the file and then
3014 status = open_fake_file(req, conn, req->vuid,
3015 fake_file_type, fname,
3017 if (!NT_STATUS_IS_OK(status)) {
3025 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
3026 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
3031 if ((req != NULL) && (req->flags2 & FLAGS2_DFS_PATHNAMES)) {
3032 char *resolved_fname;
3034 status = resolve_dfspath(talloc_tos(), conn, true, fname,
3037 if (!NT_STATUS_IS_OK(status)) {
3039 * For PATH_NOT_COVERED we had
3040 * reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
3041 * ERRSRV, ERRbadpath);
3042 * Need to fix in callers
3046 fname = resolved_fname;
3050 * Check if POSIX semantics are wanted.
3053 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
3054 case_state = set_posix_case_semantics(talloc_tos(), conn);
3055 file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
3059 char *converted_fname;
3061 SET_STAT_INVALID(sbuf);
3063 status = unix_convert(talloc_tos(), conn, fname, False,
3064 &converted_fname, NULL, &sbuf);
3065 if (!NT_STATUS_IS_OK(status)) {
3068 fname = converted_fname;
3071 TALLOC_FREE(case_state);
3073 /* All file access must go through check_name() */
3075 status = check_name(conn, fname);
3076 if (!NT_STATUS_IS_OK(status)) {
3080 status = create_file_unixpath(
3081 conn, req, fname, access_mask, share_access,
3082 create_disposition, create_options, file_attributes,
3083 oplock_request, allocation_size, sd, ea_list,
3084 &fsp, &info, &sbuf);
3086 if (!NT_STATUS_IS_OK(status)) {
3091 DEBUG(10, ("create_file: info=%d\n", info));
3094 if (pinfo != NULL) {
3097 if (psbuf != NULL) {
3100 return NT_STATUS_OK;
3103 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
3106 close_file(req, fsp, ERROR_CLOSE);