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/>.
23 #include "system/filesys.h"
25 #include "smbd/smbd.h"
26 #include "smbd/globals.h"
27 #include "fake_file.h"
28 #include "../libcli/security/security.h"
29 #include "../librpc/gen_ndr/ndr_security.h"
30 #include "../librpc/gen_ndr/open_files.h"
34 extern const struct generic_mapping file_generic_mapping
;
36 struct deferred_open_record
{
37 bool delayed_for_oplocks
;
42 /****************************************************************************
43 If the requester wanted DELETE_ACCESS and was rejected because
44 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
46 ****************************************************************************/
48 static bool parent_override_delete(connection_struct
*conn
,
49 const struct smb_filename
*smb_fname
,
51 uint32_t rejected_mask
)
53 if ((access_mask
& DELETE_ACCESS
) &&
54 (rejected_mask
& DELETE_ACCESS
) &&
55 can_delete_file_in_directory(conn
, smb_fname
)) {
61 /****************************************************************************
62 Check if we have open rights.
63 ****************************************************************************/
65 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
66 const struct smb_filename
*smb_fname
,
69 /* Check if we have rights to open. */
71 struct security_descriptor
*sd
= NULL
;
72 uint32_t rejected_share_access
;
73 uint32_t rejected_mask
= access_mask
;
75 rejected_share_access
= access_mask
& ~(conn
->share_access
);
77 if (rejected_share_access
) {
78 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
80 (unsigned int)access_mask
,
81 smb_fname_str_dbg(smb_fname
),
82 (unsigned int)rejected_share_access
));
83 return NT_STATUS_ACCESS_DENIED
;
86 if (get_current_uid(conn
) == (uid_t
)0) {
87 /* I'm sorry sir, I didn't know you were root... */
88 DEBUG(10,("smbd_check_access_rights: root override "
89 "on %s. Granting 0x%x\n",
90 smb_fname_str_dbg(smb_fname
),
91 (unsigned int)access_mask
));
95 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
96 DEBUG(10,("smbd_check_access_rights: not checking ACL "
97 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
98 smb_fname_str_dbg(smb_fname
),
99 (unsigned int)access_mask
));
103 if (access_mask
== DELETE_ACCESS
&&
104 VALID_STAT(smb_fname
->st
) &&
105 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
106 /* We can always delete a symlink. */
107 DEBUG(10,("smbd_check_access_rights: not checking ACL "
108 "on DELETE_ACCESS on symlink %s.\n",
109 smb_fname_str_dbg(smb_fname
) ));
113 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
118 if (!NT_STATUS_IS_OK(status
)) {
119 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
121 smb_fname_str_dbg(smb_fname
),
124 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
132 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
133 * owner WRITE_DAC and READ_CONTROL.
135 status
= se_access_check(sd
,
136 get_current_nttok(conn
),
137 (access_mask
& ~FILE_READ_ATTRIBUTES
),
140 DEBUG(10,("smbd_check_access_rights: file %s requesting "
141 "0x%x returning 0x%x (%s)\n",
142 smb_fname_str_dbg(smb_fname
),
143 (unsigned int)access_mask
,
144 (unsigned int)rejected_mask
,
145 nt_errstr(status
) ));
147 if (!NT_STATUS_IS_OK(status
)) {
148 if (DEBUGLEVEL
>= 10) {
149 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
150 smb_fname_str_dbg(smb_fname
) ));
151 NDR_PRINT_DEBUG(security_descriptor
, sd
);
157 if (NT_STATUS_IS_OK(status
) ||
158 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
162 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
166 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
167 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
168 !lp_store_dos_attributes(SNUM(conn
)) &&
169 (lp_map_readonly(SNUM(conn
)) ||
170 lp_map_archive(SNUM(conn
)) ||
171 lp_map_hidden(SNUM(conn
)) ||
172 lp_map_system(SNUM(conn
)))) {
173 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
175 DEBUG(10,("smbd_check_access_rights: "
177 "FILE_WRITE_ATTRIBUTES "
179 smb_fname_str_dbg(smb_fname
)));
182 if (parent_override_delete(conn
,
186 /* Were we trying to do an open
187 * for delete and didn't get DELETE
188 * access (only) ? Check if the
189 * directory allows DELETE_CHILD.
191 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
194 rejected_mask
&= ~DELETE_ACCESS
;
196 DEBUG(10,("smbd_check_access_rights: "
200 smb_fname_str_dbg(smb_fname
)));
203 if (rejected_mask
!= 0) {
204 return NT_STATUS_ACCESS_DENIED
;
209 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
210 struct smb_filename
*smb_fname
,
211 uint32_t access_mask
)
214 char *parent_dir
= NULL
;
215 struct security_descriptor
*parent_sd
= NULL
;
216 uint32_t access_granted
= 0;
218 if (!parent_dirname(talloc_tos(),
219 smb_fname
->base_name
,
222 return NT_STATUS_NO_MEMORY
;
225 if (get_current_uid(conn
) == (uid_t
)0) {
226 /* I'm sorry sir, I didn't know you were root... */
227 DEBUG(10,("check_parent_access: root override "
228 "on %s. Granting 0x%x\n",
229 smb_fname_str_dbg(smb_fname
),
230 (unsigned int)access_mask
));
234 status
= SMB_VFS_GET_NT_ACL(conn
,
239 if (!NT_STATUS_IS_OK(status
)) {
240 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
241 "%s with error %s\n",
248 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
249 * owner WRITE_DAC and READ_CONTROL.
251 status
= se_access_check(parent_sd
,
252 get_current_nttok(conn
),
253 (access_mask
& ~FILE_READ_ATTRIBUTES
),
255 if(!NT_STATUS_IS_OK(status
)) {
256 DEBUG(5,("check_parent_access: access check "
257 "on directory %s for "
258 "path %s for mask 0x%x returned (0x%x) %s\n",
260 smb_fname
->base_name
,
263 nt_errstr(status
) ));
270 /****************************************************************************
271 fd support routines - attempt to do a dos_open.
272 ****************************************************************************/
274 static NTSTATUS
fd_open(struct connection_struct
*conn
,
279 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
280 NTSTATUS status
= NT_STATUS_OK
;
284 * Never follow symlinks on a POSIX client. The
285 * client should be doing this.
288 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
293 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
294 if (fsp
->fh
->fd
== -1) {
295 int posix_errno
= errno
;
297 #if defined(ENOTSUP) && defined(OSF1)
298 /* handle special Tru64 errno */
299 if (errno
== ENOTSUP
) {
304 /* fix broken NetBSD errno */
305 if (errno
== EFTYPE
) {
309 /* fix broken FreeBSD errno */
310 if (errno
== EMLINK
) {
313 #endif /* O_NOFOLLOW */
314 status
= map_nt_error_from_unix(posix_errno
);
315 if (errno
== EMFILE
) {
316 static time_t last_warned
= 0L;
318 if (time((time_t *) NULL
) > last_warned
) {
319 DEBUG(0,("Too many open files, unable "
320 "to open more! smbd's max "
322 lp_max_open_files()));
323 last_warned
= time((time_t *) NULL
);
329 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
330 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
331 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
336 /****************************************************************************
337 Close the file associated with a fsp.
338 ****************************************************************************/
340 NTSTATUS
fd_close(files_struct
*fsp
)
347 if (fsp
->fh
->fd
== -1) {
348 return NT_STATUS_OK
; /* What we used to call a stat open. */
350 if (fsp
->fh
->ref_count
> 1) {
351 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
354 ret
= SMB_VFS_CLOSE(fsp
);
357 return map_nt_error_from_unix(errno
);
362 /****************************************************************************
363 Change the ownership of a file to that of the parent directory.
364 Do this by fd if possible.
365 ****************************************************************************/
367 void change_file_owner_to_parent(connection_struct
*conn
,
368 const char *inherit_from_dir
,
371 struct smb_filename
*smb_fname_parent
= NULL
;
375 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
376 NULL
, NULL
, &smb_fname_parent
);
377 if (!NT_STATUS_IS_OK(status
)) {
381 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
383 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
384 "directory %s. Error was %s\n",
385 smb_fname_str_dbg(smb_fname_parent
),
387 TALLOC_FREE(smb_fname_parent
);
391 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
392 /* Already this uid - no need to change. */
393 DEBUG(10,("change_file_owner_to_parent: file %s "
394 "is already owned by uid %d\n",
396 (int)fsp
->fsp_name
->st
.st_ex_uid
));
397 TALLOC_FREE(smb_fname_parent
);
402 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
405 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
406 "file %s to parent directory uid %u. Error "
407 "was %s\n", fsp_str_dbg(fsp
),
408 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
411 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
412 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
413 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
414 /* Ensure the uid entry is updated. */
415 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
418 TALLOC_FREE(smb_fname_parent
);
421 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
422 const char *inherit_from_dir
,
424 SMB_STRUCT_STAT
*psbuf
)
426 struct smb_filename
*smb_fname_parent
= NULL
;
427 struct smb_filename
*smb_fname_cwd
= NULL
;
428 char *saved_dir
= NULL
;
429 TALLOC_CTX
*ctx
= talloc_tos();
430 NTSTATUS status
= NT_STATUS_OK
;
433 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
435 if (!NT_STATUS_IS_OK(status
)) {
439 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
441 status
= map_nt_error_from_unix(errno
);
442 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
443 "directory %s. Error was %s\n",
444 smb_fname_str_dbg(smb_fname_parent
),
449 /* We've already done an lstat into psbuf, and we know it's a
450 directory. If we can cd into the directory and the dev/ino
451 are the same then we can safely chown without races as
452 we're locking the directory in place by being in it. This
453 should work on any UNIX (thanks tridge :-). JRA.
456 saved_dir
= vfs_GetWd(ctx
,conn
);
458 status
= map_nt_error_from_unix(errno
);
459 DEBUG(0,("change_dir_owner_to_parent: failed to get "
460 "current working directory. Error was %s\n",
465 /* Chdir into the new path. */
466 if (vfs_ChDir(conn
, fname
) == -1) {
467 status
= map_nt_error_from_unix(errno
);
468 DEBUG(0,("change_dir_owner_to_parent: failed to change "
469 "current working directory to %s. Error "
470 "was %s\n", fname
, strerror(errno
) ));
474 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
476 if (!NT_STATUS_IS_OK(status
)) {
480 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
482 status
= map_nt_error_from_unix(errno
);
483 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
484 "directory '.' (%s) Error was %s\n",
485 fname
, strerror(errno
)));
489 /* Ensure we're pointing at the same place. */
490 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
491 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
492 DEBUG(0,("change_dir_owner_to_parent: "
493 "device/inode on directory %s changed. "
494 "Refusing to chown !\n", fname
));
495 status
= NT_STATUS_ACCESS_DENIED
;
499 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
500 /* Already this uid - no need to change. */
501 DEBUG(10,("change_dir_owner_to_parent: directory %s "
502 "is already owned by uid %d\n",
504 (int)smb_fname_cwd
->st
.st_ex_uid
));
505 status
= NT_STATUS_OK
;
510 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
514 status
= map_nt_error_from_unix(errno
);
515 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
516 "directory %s to parent directory uid %u. "
517 "Error was %s\n", fname
,
518 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
521 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
522 "directory %s to parent directory uid %u.\n",
523 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
524 /* Ensure the uid entry is updated. */
525 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
529 vfs_ChDir(conn
,saved_dir
);
531 TALLOC_FREE(smb_fname_parent
);
532 TALLOC_FREE(smb_fname_cwd
);
536 /****************************************************************************
537 Open a file - returning a guaranteed ATOMIC indication of if the
538 file was created or not.
539 ****************************************************************************/
541 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
547 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
548 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
550 *file_created
= false;
552 if (!(flags
& O_CREAT
)) {
554 * We're not creating the file, just pass through.
556 return fd_open(conn
, fsp
, flags
, mode
);
559 if (flags
& O_EXCL
) {
561 * Fail if already exists, just pass through.
563 status
= fd_open(conn
, fsp
, flags
, mode
);
564 if (NT_STATUS_IS_OK(status
)) {
566 * Here we've opened with O_CREAT|O_EXCL
567 * and got success. We *know* we created
570 *file_created
= true;
576 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
577 * To know absolutely if we created the file or not,
578 * we can never call O_CREAT without O_EXCL. So if
579 * we think the file existed, try without O_CREAT|O_EXCL.
580 * If we think the file didn't exist, try with
581 * O_CREAT|O_EXCL. Keep bouncing between these two
582 * requests until either the file is created, or
583 * opened. Either way, we keep going until we get
584 * a returnable result (error, or open/create).
588 int curr_flags
= flags
;
591 /* Just try open, do not create. */
592 curr_flags
&= ~(O_CREAT
);
593 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
594 if (NT_STATUS_EQUAL(status
,
595 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
597 * Someone deleted it in the meantime.
600 file_existed
= false;
601 DEBUG(10,("fd_open_atomic: file %s existed. "
603 smb_fname_str_dbg(fsp
->fsp_name
)));
607 /* Try create exclusively, fail if it exists. */
608 curr_flags
|= O_EXCL
;
609 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
610 if (NT_STATUS_EQUAL(status
,
611 NT_STATUS_OBJECT_NAME_COLLISION
)) {
613 * Someone created it in the meantime.
614 * Retry without O_CREAT.
617 DEBUG(10,("fd_open_atomic: file %s "
618 "did not exist. Retry.\n",
619 smb_fname_str_dbg(fsp
->fsp_name
)));
622 if (NT_STATUS_IS_OK(status
)) {
624 * Here we've opened with O_CREAT|O_EXCL
625 * and got success. We *know* we created
628 *file_created
= true;
631 /* Create is done, or failed. */
637 /****************************************************************************
639 ****************************************************************************/
641 static NTSTATUS
open_file(files_struct
*fsp
,
642 connection_struct
*conn
,
643 struct smb_request
*req
,
644 const char *parent_dir
,
647 uint32 access_mask
, /* client requested access mask. */
648 uint32 open_access_mask
, /* what we're actually using in the open. */
649 bool *p_file_created
)
651 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
652 NTSTATUS status
= NT_STATUS_OK
;
653 int accmode
= (flags
& O_ACCMODE
);
654 int local_flags
= flags
;
655 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
660 /* Check permissions */
663 * This code was changed after seeing a client open request
664 * containing the open mode of (DENY_WRITE/read-only) with
665 * the 'create if not exist' bit set. The previous code
666 * would fail to open the file read only on a read-only share
667 * as it was checking the flags parameter directly against O_RDONLY,
668 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
672 if (!CAN_WRITE(conn
)) {
673 /* It's a read-only share - fail if we wanted to write. */
674 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
675 DEBUG(3,("Permission denied opening %s\n",
676 smb_fname_str_dbg(smb_fname
)));
677 return NT_STATUS_ACCESS_DENIED
;
678 } else if(flags
& O_CREAT
) {
679 /* We don't want to write - but we must make sure that
680 O_CREAT doesn't create the file if we have write
681 access into the directory.
683 flags
&= ~(O_CREAT
|O_EXCL
);
684 local_flags
&= ~(O_CREAT
|O_EXCL
);
689 * This little piece of insanity is inspired by the
690 * fact that an NT client can open a file for O_RDONLY,
691 * but set the create disposition to FILE_EXISTS_TRUNCATE.
692 * If the client *can* write to the file, then it expects to
693 * truncate the file, even though it is opening for readonly.
694 * Quicken uses this stupid trick in backup file creation...
695 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
696 * for helping track this one down. It didn't bite us in 2.0.x
697 * as we always opened files read-write in that release. JRA.
700 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
701 DEBUG(10,("open_file: truncate requested on read-only open "
702 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
703 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
706 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
707 (!file_existed
&& (local_flags
& O_CREAT
)) ||
708 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
713 * We can't actually truncate here as the file may be locked.
714 * open_file_ntcreate will take care of the truncate later. JRA.
717 local_flags
&= ~O_TRUNC
;
719 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
721 * We would block on opening a FIFO with no one else on the
722 * other end. Do what we used to do and add O_NONBLOCK to the
726 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
727 local_flags
|= O_NONBLOCK
;
731 /* Don't create files with Microsoft wildcard characters. */
734 * wildcard characters are allowed in stream names
735 * only test the basefilename
737 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
739 wild
= smb_fname
->base_name
;
741 if ((local_flags
& O_CREAT
) && !file_existed
&&
743 return NT_STATUS_OBJECT_NAME_INVALID
;
746 /* Can we access this file ? */
747 if (!fsp
->base_fsp
) {
748 /* Only do this check on non-stream open. */
750 status
= smbd_check_access_rights(conn
,
753 } else if (local_flags
& O_CREAT
){
754 status
= check_parent_access(conn
,
758 /* File didn't exist and no O_CREAT. */
759 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
761 if (!NT_STATUS_IS_OK(status
)) {
762 DEBUG(10,("open_file: "
766 "smbd_check_access_rights" :
767 "check_parent_access",
768 smb_fname_str_dbg(smb_fname
),
769 nt_errstr(status
) ));
774 /* Actually do the open */
775 status
= fd_open_atomic(conn
, fsp
, local_flags
,
776 unx_mode
, p_file_created
);
777 if (!NT_STATUS_IS_OK(status
)) {
778 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
779 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
780 nt_errstr(status
),local_flags
,flags
));
784 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
786 /* If we have an fd, this stat should succeed. */
787 DEBUG(0,("Error doing fstat on open file %s "
789 smb_fname_str_dbg(smb_fname
),
791 status
= map_nt_error_from_unix(errno
);
796 if (*p_file_created
) {
797 /* We created this file. */
799 bool need_re_stat
= false;
800 /* Do all inheritance work after we've
801 done a successful fstat call and filled
802 in the stat struct in fsp->fsp_name. */
804 /* Inherit the ACL if required */
805 if (lp_inherit_perms(SNUM(conn
))) {
806 inherit_access_posix_acl(conn
, parent_dir
,
807 smb_fname
->base_name
,
812 /* Change the owner if required. */
813 if (lp_inherit_owner(SNUM(conn
))) {
814 change_file_owner_to_parent(conn
, parent_dir
,
820 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
821 /* If we have an fd, this stat should succeed. */
823 DEBUG(0,("Error doing fstat on open file %s "
825 smb_fname_str_dbg(smb_fname
),
830 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
831 FILE_NOTIFY_CHANGE_FILE_NAME
,
832 smb_fname
->base_name
);
835 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
837 /* File must exist for a stat open. */
838 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
841 status
= smbd_check_access_rights(conn
,
845 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
847 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
848 /* This is a POSIX stat open for delete
849 * or rename on a symlink that points
851 DEBUG(10,("open_file: allowing POSIX "
852 "open on bad symlink %s\n",
853 smb_fname_str_dbg(smb_fname
)));
854 status
= NT_STATUS_OK
;
857 if (!NT_STATUS_IS_OK(status
)) {
858 DEBUG(10,("open_file: "
859 "smbd_check_access_rights on file "
861 smb_fname_str_dbg(smb_fname
),
862 nt_errstr(status
) ));
868 * POSIX allows read-only opens of directories. We don't
869 * want to do this (we use a different code path for this)
870 * so catch a directory open and return an EISDIR. JRA.
873 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
876 return NT_STATUS_FILE_IS_A_DIRECTORY
;
879 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
880 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
881 fsp
->file_pid
= req
? req
->smbpid
: 0;
882 fsp
->can_lock
= True
;
883 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
886 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
887 fsp
->print_file
= NULL
;
888 fsp
->modified
= False
;
889 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
890 fsp
->is_directory
= False
;
891 if (conn
->aio_write_behind_list
&&
892 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
893 conn
->case_sensitive
)) {
894 fsp
->aio_write_behind
= True
;
897 fsp
->wcp
= NULL
; /* Write cache pointer. */
899 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
900 conn
->session_info
->unix_info
->unix_name
,
901 smb_fname_str_dbg(smb_fname
),
902 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
903 conn
->num_files_open
));
909 /****************************************************************************
910 Check if we can open a file with a share mode.
911 Returns True if conflict, False if not.
912 ****************************************************************************/
914 static bool share_conflict(struct share_mode_entry
*entry
,
918 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
919 "entry->share_access = 0x%x, "
920 "entry->private_options = 0x%x\n",
921 (unsigned int)entry
->access_mask
,
922 (unsigned int)entry
->share_access
,
923 (unsigned int)entry
->private_options
));
925 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
926 (unsigned int)access_mask
, (unsigned int)share_access
));
928 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
932 DELETE_ACCESS
)) == 0) {
933 DEBUG(10,("share_conflict: No conflict due to "
934 "entry->access_mask = 0x%x\n",
935 (unsigned int)entry
->access_mask
));
939 if ((access_mask
& (FILE_WRITE_DATA
|
943 DELETE_ACCESS
)) == 0) {
944 DEBUG(10,("share_conflict: No conflict due to "
945 "access_mask = 0x%x\n",
946 (unsigned int)access_mask
));
950 #if 1 /* JRA TEST - Superdebug. */
951 #define CHECK_MASK(num, am, right, sa, share) \
952 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
953 (unsigned int)(num), (unsigned int)(am), \
954 (unsigned int)(right), (unsigned int)(am)&(right) )); \
955 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
956 (unsigned int)(num), (unsigned int)(sa), \
957 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
958 if (((am) & (right)) && !((sa) & (share))) { \
959 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
960 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
961 (unsigned int)(share) )); \
965 #define CHECK_MASK(num, am, right, sa, share) \
966 if (((am) & (right)) && !((sa) & (share))) { \
967 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
968 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
969 (unsigned int)(share) )); \
974 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
975 share_access
, FILE_SHARE_WRITE
);
976 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
977 entry
->share_access
, FILE_SHARE_WRITE
);
979 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
980 share_access
, FILE_SHARE_READ
);
981 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
982 entry
->share_access
, FILE_SHARE_READ
);
984 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
985 share_access
, FILE_SHARE_DELETE
);
986 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
987 entry
->share_access
, FILE_SHARE_DELETE
);
989 DEBUG(10,("share_conflict: No conflict.\n"));
993 #if defined(DEVELOPER)
994 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
996 struct share_mode_entry
*share_entry
)
998 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1001 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1005 if (is_deferred_open_entry(share_entry
) &&
1006 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
1007 char *str
= talloc_asprintf(talloc_tos(),
1008 "Got a deferred entry without a request: "
1010 share_mode_str(talloc_tos(), num
, share_entry
));
1014 if (!is_valid_share_mode_entry(share_entry
)) {
1018 fsp
= file_find_dif(sconn
, share_entry
->id
,
1019 share_entry
->share_file_id
);
1021 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1022 share_mode_str(talloc_tos(), num
, share_entry
) ));
1023 smb_panic("validate_my_share_entries: Cannot match a "
1024 "share entry with an open file\n");
1027 if (is_deferred_open_entry(share_entry
)) {
1031 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1032 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
1033 /* Someone has already written to it, but I haven't yet
1038 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1047 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1048 share_mode_str(talloc_tos(), num
, share_entry
) ));
1049 str
= talloc_asprintf(talloc_tos(),
1050 "validate_my_share_entries: "
1051 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1052 fsp
->fsp_name
->base_name
,
1053 (unsigned int)fsp
->oplock_type
,
1054 (unsigned int)share_entry
->op_type
);
1060 bool is_stat_open(uint32 access_mask
)
1062 return (access_mask
&&
1063 ((access_mask
& ~(SYNCHRONIZE_ACCESS
| FILE_READ_ATTRIBUTES
|
1064 FILE_WRITE_ATTRIBUTES
))==0) &&
1065 ((access_mask
& (SYNCHRONIZE_ACCESS
|FILE_READ_ATTRIBUTES
|
1066 FILE_WRITE_ATTRIBUTES
)) != 0));
1069 /****************************************************************************
1070 Deal with share modes
1071 Invarient: Share mode must be locked on entry and exit.
1072 Returns -1 on error, or number of share modes on success (may be zero).
1073 ****************************************************************************/
1075 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1076 struct share_mode_lock
*lck
,
1079 uint32 share_access
,
1080 uint32 create_options
,
1085 if(lck
->data
->num_share_modes
== 0) {
1086 return NT_STATUS_OK
;
1089 /* A delete on close prohibits everything */
1091 if (is_delete_on_close_set(lck
, name_hash
)) {
1093 * Check the delete on close token
1094 * is valid. It could have been left
1095 * after a server crash.
1097 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1098 if (!share_mode_stale_pid(lck
->data
, i
)) {
1100 *file_existed
= true;
1102 return NT_STATUS_DELETE_PENDING
;
1105 return NT_STATUS_OK
;
1108 if (is_stat_open(access_mask
)) {
1109 /* Stat open that doesn't trigger oplock breaks or share mode
1110 * checks... ! JRA. */
1111 return NT_STATUS_OK
;
1115 * Check if the share modes will give us access.
1118 #if defined(DEVELOPER)
1119 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1120 validate_my_share_entries(conn
->sconn
, i
,
1121 &lck
->data
->share_modes
[i
]);
1125 /* Now we check the share modes, after any oplock breaks. */
1126 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1128 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1132 /* someone else has a share lock on it, check to see if we can
1134 if (share_conflict(&lck
->data
->share_modes
[i
],
1135 access_mask
, share_access
)) {
1137 if (share_mode_stale_pid(lck
->data
, i
)) {
1141 *file_existed
= true;
1143 return NT_STATUS_SHARING_VIOLATION
;
1147 if (lck
->data
->num_share_modes
!= 0) {
1148 *file_existed
= true;
1151 return NT_STATUS_OK
;
1154 static bool is_delete_request(files_struct
*fsp
) {
1155 return ((fsp
->access_mask
== DELETE_ACCESS
) &&
1156 (fsp
->oplock_type
== NO_OPLOCK
));
1160 * Send a break message to the oplock holder and delay the open for
1164 static NTSTATUS
send_break_message(files_struct
*fsp
,
1165 struct share_mode_entry
*exclusive
,
1170 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1172 DEBUG(10, ("Sending break request to PID %s\n",
1173 procid_str_static(&exclusive
->pid
)));
1174 exclusive
->op_mid
= mid
;
1176 /* Create the message. */
1177 share_mode_entry_to_message(msg
, exclusive
);
1179 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1180 don't want this set in the share mode struct pointed to by lck. */
1182 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1183 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1184 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1187 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1188 MSG_SMB_BREAK_REQUEST
,
1190 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1191 if (!NT_STATUS_IS_OK(status
)) {
1192 DEBUG(3, ("Could not send oplock break message: %s\n",
1193 nt_errstr(status
)));
1200 * Return share_mode_entry pointers for :
1201 * 1). Batch oplock entry.
1202 * 2). Batch or exclusive oplock entry (may be identical to #1).
1203 * bool have_level2_oplock
1204 * bool have_no_oplock.
1205 * Do internal consistency checks on the share mode for a file.
1208 static void find_oplock_types(files_struct
*fsp
,
1210 const struct share_mode_lock
*lck
,
1211 struct share_mode_entry
**pp_batch
,
1212 struct share_mode_entry
**pp_ex_or_batch
,
1214 bool *got_no_oplock
)
1219 *pp_ex_or_batch
= NULL
;
1220 *got_level2
= false;
1221 *got_no_oplock
= false;
1223 /* Ignore stat or internal opens, as is done in
1224 delay_for_batch_oplocks() and
1225 delay_for_exclusive_oplocks().
1227 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1231 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1232 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1236 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1237 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1238 /* We ignore stat opens in the table - they
1239 always have NO_OPLOCK and never get or
1240 cause breaks. JRA. */
1244 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1245 /* batch - can only be one. */
1246 if (share_mode_stale_pid(lck
->data
, i
)) {
1247 DEBUG(10, ("Found stale batch oplock\n"));
1250 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1251 smb_panic("Bad batch oplock entry.");
1253 *pp_batch
= &lck
->data
->share_modes
[i
];
1256 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1257 if (share_mode_stale_pid(lck
->data
, i
)) {
1258 DEBUG(10, ("Found stale duplicate oplock\n"));
1261 /* Exclusive or batch - can only be one. */
1262 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1263 smb_panic("Bad exclusive or batch oplock entry.");
1265 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1268 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1269 if (*pp_batch
|| *pp_ex_or_batch
) {
1270 if (share_mode_stale_pid(lck
->data
, i
)) {
1271 DEBUG(10, ("Found stale LevelII "
1275 smb_panic("Bad levelII oplock entry.");
1280 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1281 if (*pp_batch
|| *pp_ex_or_batch
) {
1282 if (share_mode_stale_pid(lck
->data
, i
)) {
1283 DEBUG(10, ("Found stale NO_OPLOCK "
1287 smb_panic("Bad no oplock entry.");
1289 *got_no_oplock
= true;
1294 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1297 struct share_mode_entry
*batch_entry
)
1299 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1302 if (batch_entry
== NULL
) {
1306 /* Found a batch oplock */
1307 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1311 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1314 struct share_mode_entry
*ex_entry
)
1318 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1321 if (ex_entry
== NULL
) {
1325 /* Found an exclusive or batch oplock */
1327 delay_it
= is_delete_request(fsp
) ?
1328 BATCH_OPLOCK_TYPE(ex_entry
->op_type
) : true;
1334 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1338 static bool file_has_brlocks(files_struct
*fsp
)
1340 struct byte_range_lock
*br_lck
;
1342 br_lck
= brl_get_locks_readonly(fsp
);
1346 return br_lck
->num_locks
> 0 ? true : false;
1349 static void grant_fsp_oplock_type(files_struct
*fsp
,
1351 bool got_level2_oplock
,
1352 bool got_a_none_oplock
)
1354 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1355 lp_level2_oplocks(SNUM(fsp
->conn
));
1357 /* Start by granting what the client asked for,
1358 but ensure no SAMBA_PRIVATE bits can be set. */
1359 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1361 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1362 /* No oplocks on internal open. */
1363 fsp
->oplock_type
= NO_OPLOCK
;
1364 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1365 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1369 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1370 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1372 fsp
->oplock_type
= NO_OPLOCK
;
1375 if (is_stat_open(fsp
->access_mask
)) {
1376 /* Leave the value already set. */
1377 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1378 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1383 * Match what was requested (fsp->oplock_type) with
1384 * what was found in the existing share modes.
1387 if (got_a_none_oplock
) {
1388 fsp
->oplock_type
= NO_OPLOCK
;
1389 } else if (got_level2_oplock
) {
1390 if (fsp
->oplock_type
== NO_OPLOCK
||
1391 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1392 /* Store a level2 oplock, but don't tell the client */
1393 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1395 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1398 /* All share_mode_entries are placeholders or deferred.
1399 * Silently upgrade to fake levelII if the client didn't
1400 * ask for an oplock. */
1401 if (fsp
->oplock_type
== NO_OPLOCK
) {
1402 /* Store a level2 oplock, but don't tell the client */
1403 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1408 * Don't grant level2 to clients that don't want them
1409 * or if we've turned them off.
1411 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1412 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1415 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1416 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1419 static bool request_timed_out(struct timeval request_time
,
1420 struct timeval timeout
)
1422 struct timeval now
, end_time
;
1424 end_time
= timeval_sum(&request_time
, &timeout
);
1425 return (timeval_compare(&end_time
, &now
) < 0);
1428 /****************************************************************************
1429 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1430 ****************************************************************************/
1432 static void defer_open(struct share_mode_lock
*lck
,
1433 struct timeval request_time
,
1434 struct timeval timeout
,
1435 struct smb_request
*req
,
1436 struct deferred_open_record
*state
)
1438 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1440 /* Paranoia check */
1445 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1446 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1448 if (is_deferred_open_entry(e
) &&
1449 serverid_equal(&self
, &e
->pid
) &&
1450 (e
->op_mid
== req
->mid
)) {
1451 DEBUG(0, ("Trying to defer an already deferred "
1452 "request: mid=%llu, exiting\n",
1453 (unsigned long long)req
->mid
));
1454 exit_server("attempt to defer a deferred request");
1459 /* End paranoia check */
1461 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1462 "open entry for mid %llu\n",
1463 (unsigned int)request_time
.tv_sec
,
1464 (unsigned int)request_time
.tv_usec
,
1465 (unsigned long long)req
->mid
));
1467 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1468 state
->id
, (char *)state
, sizeof(*state
))) {
1469 exit_server("push_deferred_open_message_smb failed");
1472 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1477 /****************************************************************************
1478 On overwrite open ensure that the attributes match.
1479 ****************************************************************************/
1481 bool open_match_attributes(connection_struct
*conn
,
1482 uint32 old_dos_attr
,
1483 uint32 new_dos_attr
,
1484 mode_t existing_unx_mode
,
1485 mode_t new_unx_mode
,
1486 mode_t
*returned_unx_mode
)
1488 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1490 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1491 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1493 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1494 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1495 *returned_unx_mode
= new_unx_mode
;
1497 *returned_unx_mode
= (mode_t
)0;
1500 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1501 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1502 "returned_unx_mode = 0%o\n",
1503 (unsigned int)old_dos_attr
,
1504 (unsigned int)existing_unx_mode
,
1505 (unsigned int)new_dos_attr
,
1506 (unsigned int)*returned_unx_mode
));
1508 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1509 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1510 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1511 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1515 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1516 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1517 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1524 /****************************************************************************
1525 Special FCB or DOS processing in the case of a sharing violation.
1526 Try and find a duplicated file handle.
1527 ****************************************************************************/
1529 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1530 connection_struct
*conn
,
1531 files_struct
*fsp_to_dup_into
,
1532 const struct smb_filename
*smb_fname
,
1537 uint32 share_access
,
1538 uint32 create_options
)
1542 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1543 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1545 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1546 fsp
= file_find_di_next(fsp
)) {
1548 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1549 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1550 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1551 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1552 (unsigned int)fsp
->file_pid
,
1553 (unsigned int)fsp
->fh
->private_options
,
1554 (unsigned int)fsp
->access_mask
));
1556 if (fsp
->fh
->fd
!= -1 &&
1557 fsp
->vuid
== vuid
&&
1558 fsp
->file_pid
== file_pid
&&
1559 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1560 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1561 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1562 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1563 strequal(fsp
->fsp_name
->stream_name
,
1564 smb_fname
->stream_name
)) {
1565 DEBUG(10,("fcb_or_dos_open: file match\n"));
1571 return NT_STATUS_NOT_FOUND
;
1574 /* quite an insane set of semantics ... */
1575 if (is_executable(smb_fname
->base_name
) &&
1576 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1577 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1578 return NT_STATUS_INVALID_PARAMETER
;
1581 /* We need to duplicate this fsp. */
1582 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1583 create_options
, fsp_to_dup_into
);
1586 static void schedule_defer_open(struct share_mode_lock
*lck
,
1587 struct timeval request_time
,
1588 struct smb_request
*req
)
1590 struct deferred_open_record state
;
1592 /* This is a relative time, added to the absolute
1593 request_time value to get the absolute timeout time.
1594 Note that if this is the second or greater time we enter
1595 this codepath for this particular request mid then
1596 request_time is left as the absolute time of the *first*
1597 time this request mid was processed. This is what allows
1598 the request to eventually time out. */
1600 struct timeval timeout
;
1602 /* Normally the smbd we asked should respond within
1603 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1604 * the client did, give twice the timeout as a safety
1605 * measure here in case the other smbd is stuck
1606 * somewhere else. */
1608 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1610 /* Nothing actually uses state.delayed_for_oplocks
1611 but it's handy to differentiate in debug messages
1612 between a 30 second delay due to oplock break, and
1613 a 1 second delay for share mode conflicts. */
1615 state
.delayed_for_oplocks
= True
;
1616 state
.async_open
= false;
1617 state
.id
= lck
->data
->id
;
1619 if (!request_timed_out(request_time
, timeout
)) {
1620 defer_open(lck
, request_time
, timeout
, req
, &state
);
1624 /****************************************************************************
1625 Reschedule an open call that went asynchronous.
1626 ****************************************************************************/
1628 static void schedule_async_open(struct timeval request_time
,
1629 struct smb_request
*req
)
1631 struct deferred_open_record state
;
1632 struct timeval timeout
;
1634 timeout
= timeval_set(20, 0);
1637 state
.delayed_for_oplocks
= false;
1638 state
.async_open
= true;
1640 if (!request_timed_out(request_time
, timeout
)) {
1641 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1645 /****************************************************************************
1646 Work out what access_mask to use from what the client sent us.
1647 ****************************************************************************/
1649 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1650 connection_struct
*conn
,
1651 const struct smb_filename
*smb_fname
,
1652 uint32_t *p_access_mask
)
1654 struct security_descriptor
*sd
;
1655 uint32_t access_granted
;
1658 if (get_current_uid(conn
) == (uid_t
)0) {
1659 *p_access_mask
|= FILE_GENERIC_ALL
;
1660 return NT_STATUS_OK
;
1663 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1668 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1670 * File did not exist
1672 *p_access_mask
= FILE_GENERIC_ALL
;
1673 return NT_STATUS_OK
;
1675 if (!NT_STATUS_IS_OK(status
)) {
1676 DEBUG(10,("smbd_calculate_access_mask: "
1677 "Could not get acl on file %s: %s\n",
1678 smb_fname_str_dbg(smb_fname
),
1679 nt_errstr(status
)));
1680 return NT_STATUS_ACCESS_DENIED
;
1684 * Never test FILE_READ_ATTRIBUTES. se_access_check()
1685 * also takes care of owner WRITE_DAC and READ_CONTROL.
1687 status
= se_access_check(sd
,
1688 get_current_nttok(conn
),
1689 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1694 if (!NT_STATUS_IS_OK(status
)) {
1695 DEBUG(10, ("smbd_calculate_access_mask: "
1696 "Access denied on file %s: "
1697 "when calculating maximum access\n",
1698 smb_fname_str_dbg(smb_fname
)));
1699 return NT_STATUS_ACCESS_DENIED
;
1701 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1702 return NT_STATUS_OK
;
1705 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1706 const struct smb_filename
*smb_fname
,
1707 uint32_t access_mask
,
1708 uint32_t *access_mask_out
)
1711 uint32_t orig_access_mask
= access_mask
;
1712 uint32_t rejected_share_access
;
1715 * Convert GENERIC bits to specific bits.
1718 se_map_generic(&access_mask
, &file_generic_mapping
);
1720 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1721 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1723 status
= smbd_calculate_maximum_allowed_access(
1724 conn
, smb_fname
, &access_mask
);
1726 if (!NT_STATUS_IS_OK(status
)) {
1730 access_mask
&= conn
->share_access
;
1733 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1735 if (rejected_share_access
) {
1736 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1737 "file %s: rejected by share access mask[0x%08X] "
1738 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1739 smb_fname_str_dbg(smb_fname
),
1741 orig_access_mask
, access_mask
,
1742 rejected_share_access
));
1743 return NT_STATUS_ACCESS_DENIED
;
1746 *access_mask_out
= access_mask
;
1747 return NT_STATUS_OK
;
1750 /****************************************************************************
1751 Remove the deferred open entry under lock.
1752 ****************************************************************************/
1754 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1755 struct server_id pid
)
1757 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1760 DEBUG(0, ("could not get share mode lock\n"));
1763 del_deferred_open_entry(lck
, mid
, pid
);
1767 /****************************************************************************
1768 Return true if this is a state pointer to an asynchronous create.
1769 ****************************************************************************/
1771 bool is_deferred_open_async(const void *ptr
)
1773 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1775 return state
->async_open
;
1778 /****************************************************************************
1779 Open a file with a share mode. Passed in an already created files_struct *.
1780 ****************************************************************************/
1782 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1783 struct smb_request
*req
,
1784 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1785 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1786 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1787 uint32 create_options
, /* options such as delete on close. */
1788 uint32 new_dos_attributes
, /* attributes used for new file. */
1789 int oplock_request
, /* internal Samba oplock codes. */
1790 /* Information (FILE_EXISTS etc.) */
1791 uint32_t private_flags
, /* Samba specific flags. */
1795 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1798 bool file_existed
= VALID_STAT(smb_fname
->st
);
1799 bool def_acl
= False
;
1800 bool posix_open
= False
;
1801 bool new_file_created
= False
;
1802 bool clear_ads
= false;
1803 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1804 mode_t new_unx_mode
= (mode_t
)0;
1805 mode_t unx_mode
= (mode_t
)0;
1807 uint32 existing_dos_attributes
= 0;
1808 struct timeval request_time
= timeval_zero();
1809 struct share_mode_lock
*lck
= NULL
;
1810 uint32 open_access_mask
= access_mask
;
1813 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1815 if (conn
->printer
) {
1817 * Printers are handled completely differently.
1818 * Most of the passed parameters are ignored.
1822 *pinfo
= FILE_WAS_CREATED
;
1825 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1826 smb_fname_str_dbg(smb_fname
)));
1829 DEBUG(0,("open_file_ntcreate: printer open without "
1830 "an SMB request!\n"));
1831 return NT_STATUS_INTERNAL_ERROR
;
1834 return print_spool_open(fsp
, smb_fname
->base_name
,
1838 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1840 return NT_STATUS_NO_MEMORY
;
1843 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1845 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1846 new_dos_attributes
= 0;
1848 /* Windows allows a new file to be created and
1849 silently removes a FILE_ATTRIBUTE_DIRECTORY
1850 sent by the client. Do the same. */
1852 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1854 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1856 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1857 smb_fname
, parent_dir
);
1860 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1861 "access_mask=0x%x share_access=0x%x "
1862 "create_disposition = 0x%x create_options=0x%x "
1863 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1864 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1865 access_mask
, share_access
, create_disposition
,
1866 create_options
, (unsigned int)unx_mode
, oplock_request
,
1867 (unsigned int)private_flags
));
1869 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1870 DEBUG(0, ("No smb request but not an internal only open!\n"));
1871 return NT_STATUS_INTERNAL_ERROR
;
1875 * Only non-internal opens can be deferred at all
1880 if (get_deferred_open_message_state(req
,
1883 /* Remember the absolute time of the original
1884 request with this mid. We'll use it later to
1885 see if this has timed out. */
1887 /* If it was an async create retry, the file
1890 if (is_deferred_open_async(ptr
)) {
1891 SET_STAT_INVALID(smb_fname
->st
);
1892 file_existed
= false;
1894 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1895 /* Remove the deferred open entry under lock. */
1896 remove_deferred_open_entry(
1897 state
->id
, req
->mid
,
1898 messaging_server_id(req
->sconn
->msg_ctx
));
1901 /* Ensure we don't reprocess this message. */
1902 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
1907 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
1909 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
1913 /* ignore any oplock requests if oplocks are disabled */
1914 if (!lp_oplocks(SNUM(conn
)) ||
1915 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
1916 /* Mask off everything except the private Samba bits. */
1917 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
1920 /* this is for OS/2 long file names - say we don't support them */
1921 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
1922 /* OS/2 Workplace shell fix may be main code stream in a later
1924 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1926 if (use_nt_status()) {
1927 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1929 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
1932 switch( create_disposition
) {
1934 * Currently we're using FILE_SUPERSEDE as the same as
1935 * FILE_OVERWRITE_IF but they really are
1936 * different. FILE_SUPERSEDE deletes an existing file
1937 * (requiring delete access) then recreates it.
1939 case FILE_SUPERSEDE
:
1940 /* If file exists replace/overwrite. If file doesn't
1942 flags2
|= (O_CREAT
| O_TRUNC
);
1946 case FILE_OVERWRITE_IF
:
1947 /* If file exists replace/overwrite. If file doesn't
1949 flags2
|= (O_CREAT
| O_TRUNC
);
1954 /* If file exists open. If file doesn't exist error. */
1955 if (!file_existed
) {
1956 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1957 "requested for file %s and file "
1959 smb_fname_str_dbg(smb_fname
)));
1961 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1965 case FILE_OVERWRITE
:
1966 /* If file exists overwrite. If file doesn't exist
1968 if (!file_existed
) {
1969 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1970 "requested for file %s and file "
1972 smb_fname_str_dbg(smb_fname
) ));
1974 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1981 /* If file exists error. If file doesn't exist
1984 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1985 "requested for file %s and file "
1986 "already exists.\n",
1987 smb_fname_str_dbg(smb_fname
)));
1988 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
1993 return map_nt_error_from_unix(errno
);
1995 flags2
|= (O_CREAT
|O_EXCL
);
1999 /* If file exists open. If file doesn't exist
2005 return NT_STATUS_INVALID_PARAMETER
;
2008 /* We only care about matching attributes on file exists and
2011 if (!posix_open
&& file_existed
&& ((create_disposition
== FILE_OVERWRITE
) ||
2012 (create_disposition
== FILE_OVERWRITE_IF
))) {
2013 if (!open_match_attributes(conn
, existing_dos_attributes
,
2015 smb_fname
->st
.st_ex_mode
,
2016 unx_mode
, &new_unx_mode
)) {
2017 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2018 "for file %s (%x %x) (0%o, 0%o)\n",
2019 smb_fname_str_dbg(smb_fname
),
2020 existing_dos_attributes
,
2022 (unsigned int)smb_fname
->st
.st_ex_mode
,
2023 (unsigned int)unx_mode
));
2025 return NT_STATUS_ACCESS_DENIED
;
2029 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2032 if (!NT_STATUS_IS_OK(status
)) {
2033 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2034 "on file %s returned %s\n",
2035 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2039 open_access_mask
= access_mask
;
2041 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2042 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2045 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2046 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2050 * Note that we ignore the append flag as append does not
2051 * mean the same thing under DOS and Unix.
2054 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
2055 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2056 /* DENY_DOS opens are always underlying read-write on the
2057 file handle, no matter what the requested access mask
2059 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
2060 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|FILE_READ_EA
|FILE_EXECUTE
)) {
2070 * Currently we only look at FILE_WRITE_THROUGH for create options.
2074 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2079 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2083 if (!posix_open
&& !CAN_WRITE(conn
)) {
2085 * We should really return a permission denied error if either
2086 * O_CREAT or O_TRUNC are set, but for compatibility with
2087 * older versions of Samba we just AND them out.
2089 flags2
&= ~(O_CREAT
|O_TRUNC
);
2093 * Ensure we can't write on a read-only share or file.
2096 if (flags
!= O_RDONLY
&& file_existed
&&
2097 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2098 DEBUG(5,("open_file_ntcreate: write access requested for "
2099 "file %s on read only %s\n",
2100 smb_fname_str_dbg(smb_fname
),
2101 !CAN_WRITE(conn
) ? "share" : "file" ));
2103 return NT_STATUS_ACCESS_DENIED
;
2106 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2107 fsp
->share_access
= share_access
;
2108 fsp
->fh
->private_options
= private_flags
;
2109 fsp
->access_mask
= open_access_mask
; /* We change this to the
2110 * requested access_mask after
2111 * the open is done. */
2112 fsp
->posix_open
= posix_open
;
2114 /* Ensure no SAMBA_PRIVATE bits can be set. */
2115 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2117 if (timeval_is_zero(&request_time
)) {
2118 request_time
= fsp
->open_time
;
2122 struct share_mode_entry
*batch_entry
= NULL
;
2123 struct share_mode_entry
*exclusive_entry
= NULL
;
2124 bool got_level2_oplock
= false;
2125 bool got_a_none_oplock
= false;
2128 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2129 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2131 lck
= get_share_mode_lock(talloc_tos(), id
,
2133 smb_fname
, &old_write_time
);
2135 DEBUG(0, ("Could not get share mode lock\n"));
2136 return NT_STATUS_SHARING_VIOLATION
;
2139 /* Get the types we need to examine. */
2140 find_oplock_types(fsp
,
2146 &got_a_none_oplock
);
2148 /* First pass - send break only on batch oplocks. */
2149 if ((req
!= NULL
) &&
2150 delay_for_batch_oplocks(fsp
,
2154 schedule_defer_open(lck
, request_time
, req
);
2156 return NT_STATUS_SHARING_VIOLATION
;
2159 /* Use the client requested access mask here, not the one we
2161 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2162 access_mask
, share_access
,
2163 create_options
, &file_existed
);
2165 if (NT_STATUS_IS_OK(status
)) {
2166 /* We might be going to allow this open. Check oplock
2168 /* Second pass - send break for both batch or
2169 * exclusive oplocks. */
2170 if ((req
!= NULL
) &&
2171 delay_for_exclusive_oplocks(
2176 schedule_defer_open(lck
, request_time
, req
);
2178 return NT_STATUS_SHARING_VIOLATION
;
2182 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2183 /* DELETE_PENDING is not deferred for a second */
2188 grant_fsp_oplock_type(fsp
,
2193 if (!NT_STATUS_IS_OK(status
)) {
2194 uint32 can_access_mask
;
2195 bool can_access
= True
;
2197 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2199 /* Check if this can be done with the deny_dos and fcb
2202 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2203 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2205 DEBUG(0, ("DOS open without an SMB "
2208 return NT_STATUS_INTERNAL_ERROR
;
2211 /* Use the client requested access mask here,
2212 * not the one we open with. */
2213 status
= fcb_or_dos_open(req
,
2224 if (NT_STATUS_IS_OK(status
)) {
2227 *pinfo
= FILE_WAS_OPENED
;
2229 return NT_STATUS_OK
;
2234 * This next line is a subtlety we need for
2235 * MS-Access. If a file open will fail due to share
2236 * permissions and also for security (access) reasons,
2237 * we need to return the access failed error, not the
2238 * share error. We can't open the file due to kernel
2239 * oplock deadlock (it's possible we failed above on
2240 * the open_mode_check()) so use a userspace check.
2243 if (flags
& O_RDWR
) {
2244 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2245 } else if (flags
& O_WRONLY
) {
2246 can_access_mask
= FILE_WRITE_DATA
;
2248 can_access_mask
= FILE_READ_DATA
;
2251 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2252 !CAN_WRITE(conn
)) ||
2253 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2254 smb_fname
, can_access_mask
))) {
2259 * If we're returning a share violation, ensure we
2260 * cope with the braindead 1 second delay.
2263 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2264 lp_defer_sharing_violations()) {
2265 struct timeval timeout
;
2266 struct deferred_open_record state
;
2269 /* this is a hack to speed up torture tests
2271 timeout_usecs
= lp_parm_int(SNUM(conn
),
2272 "smbd","sharedelay",
2273 SHARING_VIOLATION_USEC_WAIT
);
2275 /* This is a relative time, added to the absolute
2276 request_time value to get the absolute timeout time.
2277 Note that if this is the second or greater time we enter
2278 this codepath for this particular request mid then
2279 request_time is left as the absolute time of the *first*
2280 time this request mid was processed. This is what allows
2281 the request to eventually time out. */
2283 timeout
= timeval_set(0, timeout_usecs
);
2285 /* Nothing actually uses state.delayed_for_oplocks
2286 but it's handy to differentiate in debug messages
2287 between a 30 second delay due to oplock break, and
2288 a 1 second delay for share mode conflicts. */
2290 state
.delayed_for_oplocks
= False
;
2291 state
.async_open
= false;
2295 && !request_timed_out(request_time
,
2297 defer_open(lck
, request_time
, timeout
,
2305 * We have detected a sharing violation here
2306 * so return the correct error code
2308 status
= NT_STATUS_SHARING_VIOLATION
;
2310 status
= NT_STATUS_ACCESS_DENIED
;
2316 * We exit this block with the share entry *locked*.....
2320 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2323 * Ensure we pay attention to default ACLs on directories if required.
2326 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2327 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2328 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2331 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2332 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2333 (unsigned int)flags
, (unsigned int)flags2
,
2334 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2335 (unsigned int)open_access_mask
));
2338 * open_file strips any O_TRUNC flags itself.
2341 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2342 flags
|flags2
, unx_mode
, access_mask
,
2343 open_access_mask
, &new_file_created
);
2345 if (!NT_STATUS_IS_OK(fsp_open
)) {
2346 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2347 schedule_async_open(request_time
, req
);
2353 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2355 * The file did exist, but some other (local or NFS)
2356 * process either renamed/unlinked and re-created the
2357 * file with different dev/ino after we walked the path,
2358 * but before we did the open. We could retry the
2359 * open but it's a rare enough case it's easier to
2360 * just fail the open to prevent creating any problems
2361 * in the open file db having the wrong dev/ino key.
2365 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2366 "Old (dev=0x%llu, ino =0x%llu). "
2367 "New (dev=0x%llu, ino=0x%llu). Failing open "
2368 " with NT_STATUS_ACCESS_DENIED.\n",
2369 smb_fname_str_dbg(smb_fname
),
2370 (unsigned long long)saved_stat
.st_ex_dev
,
2371 (unsigned long long)saved_stat
.st_ex_ino
,
2372 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2373 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2374 return NT_STATUS_ACCESS_DENIED
;
2377 if (!file_existed
) {
2378 struct share_mode_entry
*batch_entry
= NULL
;
2379 struct share_mode_entry
*exclusive_entry
= NULL
;
2380 bool got_level2_oplock
= false;
2381 bool got_a_none_oplock
= false;
2382 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2385 * Deal with the race condition where two smbd's detect the
2386 * file doesn't exist and do the create at the same time. One
2387 * of them will win and set a share mode, the other (ie. this
2388 * one) should check if the requested share mode for this
2389 * create is allowed.
2393 * Now the file exists and fsp is successfully opened,
2394 * fsp->dev and fsp->inode are valid and should replace the
2395 * dev=0,inode=0 from a non existent file. Spotted by
2396 * Nadav Danieli <nadavd@exanet.com>. JRA.
2401 lck
= get_share_mode_lock(talloc_tos(), id
,
2403 smb_fname
, &old_write_time
);
2406 DEBUG(0, ("open_file_ntcreate: Could not get share "
2407 "mode lock for %s\n",
2408 smb_fname_str_dbg(smb_fname
)));
2410 return NT_STATUS_SHARING_VIOLATION
;
2413 /* Get the types we need to examine. */
2414 find_oplock_types(fsp
,
2420 &got_a_none_oplock
);
2422 /* First pass - send break only on batch oplocks. */
2423 if ((req
!= NULL
) &&
2424 delay_for_batch_oplocks(fsp
,
2428 schedule_defer_open(lck
, request_time
, req
);
2431 return NT_STATUS_SHARING_VIOLATION
;
2434 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2435 access_mask
, share_access
,
2436 create_options
, &file_existed
);
2438 if (NT_STATUS_IS_OK(status
)) {
2439 /* We might be going to allow this open. Check oplock
2441 /* Second pass - send break for both batch or
2442 * exclusive oplocks. */
2443 if ((req
!= NULL
) &&
2444 delay_for_exclusive_oplocks(
2449 schedule_defer_open(lck
, request_time
, req
);
2452 return NT_STATUS_SHARING_VIOLATION
;
2456 if (!NT_STATUS_IS_OK(status
)) {
2457 struct deferred_open_record state
;
2459 state
.delayed_for_oplocks
= False
;
2460 state
.async_open
= false;
2463 /* Do it all over again immediately. In the second
2464 * round we will find that the file existed and handle
2465 * the DELETE_PENDING and FCB cases correctly. No need
2466 * to duplicate the code here. Essentially this is a
2467 * "goto top of this function", but don't tell
2471 defer_open(lck
, request_time
, timeval_zero(),
2479 grant_fsp_oplock_type(fsp
,
2485 * We exit this block with the share entry *locked*.....
2490 SMB_ASSERT(lck
!= NULL
);
2492 /* Delete streams if create_disposition requires it */
2493 if (!new_file_created
&& clear_ads
&&
2494 !is_ntfs_stream_smb_fname(smb_fname
)) {
2495 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2496 if (!NT_STATUS_IS_OK(status
)) {
2503 /* note that we ignore failure for the following. It is
2504 basically a hack for NFS, and NFS will never set one of
2505 these only read them. Nobody but Samba can ever set a deny
2506 mode and we have already checked our more authoritative
2507 locking database for permission to set this deny mode. If
2508 the kernel refuses the operations then the kernel is wrong.
2509 note that GPFS supports it as well - jmcd */
2511 if (fsp
->fh
->fd
!= -1) {
2513 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2514 if(ret_flock
== -1 ){
2519 return NT_STATUS_SHARING_VIOLATION
;
2524 * At this point onwards, we can guarentee that the share entry
2525 * is locked, whether we created the file or not, and that the
2526 * deny mode is compatible with all current opens.
2530 * If requested, truncate the file.
2533 if (!new_file_created
&& (flags2
&O_TRUNC
)) {
2535 * We are modifying the file after open - update the stat
2538 if ((SMB_VFS_FTRUNCATE(fsp
, 0) == -1) ||
2539 (SMB_VFS_FSTAT(fsp
, &smb_fname
->st
)==-1)) {
2540 status
= map_nt_error_from_unix(errno
);
2548 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2549 * but we don't have to store this - just ignore it on access check.
2551 if (conn
->sconn
->using_smb2
) {
2553 * SMB2 doesn't return it (according to Microsoft tests).
2554 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2555 * File created with access = 0x7 (Read, Write, Delete)
2556 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2558 fsp
->access_mask
= access_mask
;
2560 /* But SMB1 does. */
2561 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2565 /* stat opens on existing files don't get oplocks. */
2566 if (is_stat_open(open_access_mask
)) {
2567 fsp
->oplock_type
= NO_OPLOCK
;
2571 if (new_file_created
) {
2572 info
= FILE_WAS_CREATED
;
2574 if (flags2
& O_TRUNC
) {
2575 info
= FILE_WAS_OVERWRITTEN
;
2577 info
= FILE_WAS_OPENED
;
2586 * Setup the oplock info in both the shared memory and
2590 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2591 if (!NT_STATUS_IS_OK(status
)) {
2593 * Could not get the kernel oplock or there are byte-range
2594 * locks on the file.
2596 fsp
->oplock_type
= NO_OPLOCK
;
2599 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2603 /* Handle strange delete on close create semantics. */
2604 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2606 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2608 if (!NT_STATUS_IS_OK(status
)) {
2609 /* Remember to delete the mode we just added. */
2610 del_share_mode(lck
, fsp
);
2615 /* Note that here we set the *inital* delete on close flag,
2616 not the regular one. The magic gets handled in close. */
2617 fsp
->initial_delete_on_close
= True
;
2620 if (info
!= FILE_WAS_OPENED
) {
2621 /* Files should be initially set as archive */
2622 if (lp_map_archive(SNUM(conn
)) ||
2623 lp_store_dos_attributes(SNUM(conn
))) {
2625 if (file_set_dosmode(conn
, smb_fname
,
2626 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2627 parent_dir
, true) == 0) {
2628 unx_mode
= smb_fname
->st
.st_ex_mode
;
2634 /* Determine sparse flag. */
2636 /* POSIX opens are sparse by default. */
2637 fsp
->is_sparse
= true;
2639 fsp
->is_sparse
= (file_existed
&&
2640 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2644 * Take care of inherited ACLs on created files - if default ACL not
2648 if (!posix_open
&& new_file_created
&& !def_acl
) {
2650 int saved_errno
= errno
; /* We might get ENOSYS in the next
2653 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2655 errno
= saved_errno
; /* Ignore ENOSYS */
2658 } else if (new_unx_mode
) {
2662 /* Attributes need changing. File already existed. */
2665 int saved_errno
= errno
; /* We might get ENOSYS in the
2667 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2669 if (ret
== -1 && errno
== ENOSYS
) {
2670 errno
= saved_errno
; /* Ignore ENOSYS */
2672 DEBUG(5, ("open_file_ntcreate: reset "
2673 "attributes of file %s to 0%o\n",
2674 smb_fname_str_dbg(smb_fname
),
2675 (unsigned int)new_unx_mode
));
2676 ret
= 0; /* Don't do the fchmod below. */
2681 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2682 DEBUG(5, ("open_file_ntcreate: failed to reset "
2683 "attributes of file %s to 0%o\n",
2684 smb_fname_str_dbg(smb_fname
),
2685 (unsigned int)new_unx_mode
));
2688 /* If this is a successful open, we must remove any deferred open
2691 del_deferred_open_entry(lck
, req
->mid
,
2692 messaging_server_id(req
->sconn
->msg_ctx
));
2696 return NT_STATUS_OK
;
2700 /****************************************************************************
2701 Open a file for for write to ensure that we can fchmod it.
2702 ****************************************************************************/
2704 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2705 struct smb_filename
*smb_fname
,
2706 files_struct
**result
)
2708 if (!VALID_STAT(smb_fname
->st
)) {
2709 return NT_STATUS_INVALID_PARAMETER
;
2712 return SMB_VFS_CREATE_FILE(
2715 0, /* root_dir_fid */
2716 smb_fname
, /* fname */
2717 FILE_WRITE_DATA
, /* access_mask */
2718 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2720 FILE_OPEN
, /* create_disposition*/
2721 0, /* create_options */
2722 0, /* file_attributes */
2723 INTERNAL_OPEN_ONLY
, /* oplock_request */
2724 0, /* allocation_size */
2725 0, /* private_flags */
2728 result
, /* result */
2732 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2733 struct smb_filename
*smb_dname
,
2734 uint32 file_attributes
)
2737 char *parent_dir
= NULL
;
2739 bool posix_open
= false;
2740 bool need_re_stat
= false;
2741 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2743 if(access_mask
& ~(conn
->share_access
)) {
2744 DEBUG(5,("mkdir_internal: failing share access "
2745 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2746 return NT_STATUS_ACCESS_DENIED
;
2749 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2751 return NT_STATUS_NO_MEMORY
;
2754 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2756 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2758 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2761 status
= check_parent_access(conn
,
2764 if(!NT_STATUS_IS_OK(status
)) {
2765 DEBUG(5,("mkdir_internal: check_parent_access "
2766 "on directory %s for path %s returned %s\n",
2768 smb_dname
->base_name
,
2769 nt_errstr(status
) ));
2773 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2774 return map_nt_error_from_unix(errno
);
2777 /* Ensure we're checking for a symlink here.... */
2778 /* We don't want to get caught by a symlink racer. */
2780 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2781 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2782 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2783 return map_nt_error_from_unix(errno
);
2786 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2787 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2788 smb_fname_str_dbg(smb_dname
)));
2789 return NT_STATUS_NOT_A_DIRECTORY
;
2792 if (lp_store_dos_attributes(SNUM(conn
))) {
2794 file_set_dosmode(conn
, smb_dname
,
2795 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2800 if (lp_inherit_perms(SNUM(conn
))) {
2801 inherit_access_posix_acl(conn
, parent_dir
,
2802 smb_dname
->base_name
, mode
);
2803 need_re_stat
= true;
2808 * Check if high bits should have been set,
2809 * then (if bits are missing): add them.
2810 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2813 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2814 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2815 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2816 (smb_dname
->st
.st_ex_mode
|
2817 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2818 need_re_stat
= true;
2822 /* Change the owner if required. */
2823 if (lp_inherit_owner(SNUM(conn
))) {
2824 change_dir_owner_to_parent(conn
, parent_dir
,
2825 smb_dname
->base_name
,
2827 need_re_stat
= true;
2831 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2832 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2833 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2834 return map_nt_error_from_unix(errno
);
2838 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2839 smb_dname
->base_name
);
2841 return NT_STATUS_OK
;
2844 /****************************************************************************
2845 Open a directory from an NT SMB call.
2846 ****************************************************************************/
2848 static NTSTATUS
open_directory(connection_struct
*conn
,
2849 struct smb_request
*req
,
2850 struct smb_filename
*smb_dname
,
2852 uint32 share_access
,
2853 uint32 create_disposition
,
2854 uint32 create_options
,
2855 uint32 file_attributes
,
2857 files_struct
**result
)
2859 files_struct
*fsp
= NULL
;
2860 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2861 struct share_mode_lock
*lck
= NULL
;
2863 struct timespec mtimespec
;
2866 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2867 DEBUG(2, ("open_directory: %s is a stream name!\n",
2868 smb_fname_str_dbg(smb_dname
)));
2869 return NT_STATUS_NOT_A_DIRECTORY
;
2872 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2873 /* Ensure we have a directory attribute. */
2874 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2877 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2878 "share_access = 0x%x create_options = 0x%x, "
2879 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2880 smb_fname_str_dbg(smb_dname
),
2881 (unsigned int)access_mask
,
2882 (unsigned int)share_access
,
2883 (unsigned int)create_options
,
2884 (unsigned int)create_disposition
,
2885 (unsigned int)file_attributes
));
2887 status
= smbd_calculate_access_mask(conn
, smb_dname
,
2888 access_mask
, &access_mask
);
2889 if (!NT_STATUS_IS_OK(status
)) {
2890 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2891 "on file %s returned %s\n",
2892 smb_fname_str_dbg(smb_dname
),
2893 nt_errstr(status
)));
2897 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2898 !security_token_has_privilege(get_current_nttok(conn
),
2899 SEC_PRIV_SECURITY
)) {
2900 DEBUG(10, ("open_directory: open on %s "
2901 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2902 smb_fname_str_dbg(smb_dname
)));
2903 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2906 switch( create_disposition
) {
2910 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2913 info
= FILE_WAS_OPENED
;
2918 /* If directory exists error. If directory doesn't
2922 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
2923 DEBUG(2, ("open_directory: unable to create "
2924 "%s. Error was %s\n",
2925 smb_fname_str_dbg(smb_dname
),
2926 nt_errstr(status
)));
2930 status
= mkdir_internal(conn
, smb_dname
,
2933 if (!NT_STATUS_IS_OK(status
)) {
2934 DEBUG(2, ("open_directory: unable to create "
2935 "%s. Error was %s\n",
2936 smb_fname_str_dbg(smb_dname
),
2937 nt_errstr(status
)));
2941 info
= FILE_WAS_CREATED
;
2946 * If directory exists open. If directory doesn't
2951 status
= NT_STATUS_OK
;
2952 info
= FILE_WAS_OPENED
;
2954 status
= mkdir_internal(conn
, smb_dname
,
2957 if (NT_STATUS_IS_OK(status
)) {
2958 info
= FILE_WAS_CREATED
;
2960 /* Cope with create race. */
2961 if (!NT_STATUS_EQUAL(status
,
2962 NT_STATUS_OBJECT_NAME_COLLISION
)) {
2963 DEBUG(2, ("open_directory: unable to create "
2964 "%s. Error was %s\n",
2965 smb_fname_str_dbg(smb_dname
),
2966 nt_errstr(status
)));
2969 info
= FILE_WAS_OPENED
;
2975 case FILE_SUPERSEDE
:
2976 case FILE_OVERWRITE
:
2977 case FILE_OVERWRITE_IF
:
2979 DEBUG(5,("open_directory: invalid create_disposition "
2980 "0x%x for directory %s\n",
2981 (unsigned int)create_disposition
,
2982 smb_fname_str_dbg(smb_dname
)));
2983 return NT_STATUS_INVALID_PARAMETER
;
2986 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2987 DEBUG(5,("open_directory: %s is not a directory !\n",
2988 smb_fname_str_dbg(smb_dname
)));
2989 return NT_STATUS_NOT_A_DIRECTORY
;
2992 if (info
== FILE_WAS_OPENED
) {
2993 status
= smbd_check_access_rights(conn
, smb_dname
, access_mask
);
2994 if (!NT_STATUS_IS_OK(status
)) {
2995 DEBUG(10, ("open_directory: smbd_check_access_rights on "
2996 "file %s failed with %s\n",
2997 smb_fname_str_dbg(smb_dname
),
2998 nt_errstr(status
)));
3003 status
= file_new(req
, conn
, &fsp
);
3004 if(!NT_STATUS_IS_OK(status
)) {
3009 * Setup the files_struct for it.
3012 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3013 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3014 fsp
->file_pid
= req
? req
->smbpid
: 0;
3015 fsp
->can_lock
= False
;
3016 fsp
->can_read
= False
;
3017 fsp
->can_write
= False
;
3019 fsp
->share_access
= share_access
;
3020 fsp
->fh
->private_options
= 0;
3022 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3024 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3025 fsp
->print_file
= NULL
;
3026 fsp
->modified
= False
;
3027 fsp
->oplock_type
= NO_OPLOCK
;
3028 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3029 fsp
->is_directory
= True
;
3030 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3031 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3032 if (!NT_STATUS_IS_OK(status
)) {
3033 file_free(req
, fsp
);
3037 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3040 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3042 /* POSIX allows us to open a directory with O_RDONLY. */
3043 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3045 if (!NT_STATUS_IS_OK(status
)) {
3046 DEBUG(5, ("open_directory: Could not open fd for "
3048 smb_fname_str_dbg(smb_dname
),
3049 nt_errstr(status
)));
3050 file_free(req
, fsp
);
3054 status
= vfs_stat_fsp(fsp
);
3055 if (!NT_STATUS_IS_OK(status
)) {
3057 file_free(req
, fsp
);
3061 /* Ensure there was no race condition. */
3062 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3063 DEBUG(5,("open_directory: stat struct differs for "
3065 smb_fname_str_dbg(smb_dname
)));
3067 file_free(req
, fsp
);
3068 return NT_STATUS_ACCESS_DENIED
;
3071 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3072 conn
->connectpath
, smb_dname
,
3076 DEBUG(0, ("open_directory: Could not get share mode lock for "
3077 "%s\n", smb_fname_str_dbg(smb_dname
)));
3079 file_free(req
, fsp
);
3080 return NT_STATUS_SHARING_VIOLATION
;
3083 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3084 access_mask
, share_access
,
3085 create_options
, &dir_existed
);
3087 if (!NT_STATUS_IS_OK(status
)) {
3090 file_free(req
, fsp
);
3094 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3095 req
? req
->mid
: 0, NO_OPLOCK
);
3097 /* For directories the delete on close bit at open time seems
3098 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3099 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3100 status
= can_set_delete_on_close(fsp
, 0);
3101 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3104 file_free(req
, fsp
);
3108 if (NT_STATUS_IS_OK(status
)) {
3109 /* Note that here we set the *inital* delete on close flag,
3110 not the regular one. The magic gets handled in close. */
3111 fsp
->initial_delete_on_close
= True
;
3122 return NT_STATUS_OK
;
3125 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3126 struct smb_filename
*smb_dname
)
3131 status
= SMB_VFS_CREATE_FILE(
3134 0, /* root_dir_fid */
3135 smb_dname
, /* fname */
3136 FILE_READ_ATTRIBUTES
, /* access_mask */
3137 FILE_SHARE_NONE
, /* share_access */
3138 FILE_CREATE
, /* create_disposition*/
3139 FILE_DIRECTORY_FILE
, /* create_options */
3140 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3141 0, /* oplock_request */
3142 0, /* allocation_size */
3143 0, /* private_flags */
3149 if (NT_STATUS_IS_OK(status
)) {
3150 close_file(req
, fsp
, NORMAL_CLOSE
);
3156 /****************************************************************************
3157 Receive notification that one of our open files has been renamed by another
3159 ****************************************************************************/
3161 void msg_file_was_renamed(struct messaging_context
*msg
,
3164 struct server_id server_id
,
3168 char *frm
= (char *)data
->data
;
3170 const char *sharepath
;
3171 const char *base_name
;
3172 const char *stream_name
;
3173 struct smb_filename
*smb_fname
= NULL
;
3174 size_t sp_len
, bn_len
;
3176 struct smbd_server_connection
*sconn
=
3177 talloc_get_type_abort(private_data
,
3178 struct smbd_server_connection
);
3180 if (data
->data
== NULL
3181 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3182 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3183 (int)data
->length
));
3187 /* Unpack the message. */
3188 pull_file_id_24(frm
, &id
);
3189 sharepath
= &frm
[24];
3190 sp_len
= strlen(sharepath
);
3191 base_name
= sharepath
+ sp_len
+ 1;
3192 bn_len
= strlen(base_name
);
3193 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3195 /* stream_name must always be NULL if there is no stream. */
3196 if (stream_name
[0] == '\0') {
3200 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3201 stream_name
, NULL
, &smb_fname
);
3202 if (!NT_STATUS_IS_OK(status
)) {
3206 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3208 sharepath
, smb_fname_str_dbg(smb_fname
),
3209 file_id_string_tos(&id
)));
3211 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3212 fsp
= file_find_di_next(fsp
)) {
3213 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3215 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3216 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3217 smb_fname_str_dbg(smb_fname
)));
3218 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3219 if (!NT_STATUS_IS_OK(status
)) {
3224 /* Now we have the complete path we can work out if this is
3225 actually within this share and adjust newname accordingly. */
3226 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3227 "not sharepath %s) "
3228 "%s from %s -> %s\n",
3229 fsp
->conn
->connectpath
,
3233 smb_fname_str_dbg(smb_fname
)));
3237 TALLOC_FREE(smb_fname
);
3242 * If a main file is opened for delete, all streams need to be checked for
3243 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3244 * If that works, delete them all by setting the delete on close and close.
3247 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3250 struct stream_struct
*stream_info
= NULL
;
3251 files_struct
**streams
= NULL
;
3253 unsigned int num_streams
= 0;
3254 TALLOC_CTX
*frame
= talloc_stackframe();
3257 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3258 &num_streams
, &stream_info
);
3260 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3261 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3262 DEBUG(10, ("no streams around\n"));
3264 return NT_STATUS_OK
;
3267 if (!NT_STATUS_IS_OK(status
)) {
3268 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3269 nt_errstr(status
)));
3273 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3276 if (num_streams
== 0) {
3278 return NT_STATUS_OK
;
3281 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3282 if (streams
== NULL
) {
3283 DEBUG(0, ("talloc failed\n"));
3284 status
= NT_STATUS_NO_MEMORY
;
3288 for (i
=0; i
<num_streams
; i
++) {
3289 struct smb_filename
*smb_fname
= NULL
;
3291 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3296 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3297 stream_info
[i
].name
,
3299 if (!NT_STATUS_IS_OK(status
)) {
3303 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3304 DEBUG(10, ("Unable to stat stream: %s\n",
3305 smb_fname_str_dbg(smb_fname
)));
3308 status
= SMB_VFS_CREATE_FILE(
3311 0, /* root_dir_fid */
3312 smb_fname
, /* fname */
3313 DELETE_ACCESS
, /* access_mask */
3314 (FILE_SHARE_READ
| /* share_access */
3315 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3316 FILE_OPEN
, /* create_disposition*/
3317 0, /* create_options */
3318 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3319 0, /* oplock_request */
3320 0, /* allocation_size */
3321 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3324 &streams
[i
], /* result */
3327 if (!NT_STATUS_IS_OK(status
)) {
3328 DEBUG(10, ("Could not open stream %s: %s\n",
3329 smb_fname_str_dbg(smb_fname
),
3330 nt_errstr(status
)));
3332 TALLOC_FREE(smb_fname
);
3335 TALLOC_FREE(smb_fname
);
3339 * don't touch the variable "status" beyond this point :-)
3342 for (i
-= 1 ; i
>= 0; i
--) {
3343 if (streams
[i
] == NULL
) {
3347 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3348 fsp_str_dbg(streams
[i
])));
3349 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3357 /*********************************************************************
3358 Create a default ACL by inheriting from the parent. If no inheritance
3359 from the parent available, don't set anything. This will leave the actual
3360 permissions the new file or directory already got from the filesystem
3361 as the NT ACL when read.
3362 *********************************************************************/
3364 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3366 TALLOC_CTX
*ctx
= talloc_tos();
3367 char *parent_name
= NULL
;
3368 struct security_descriptor
*parent_desc
= NULL
;
3369 NTSTATUS status
= NT_STATUS_OK
;
3370 struct security_descriptor
*psd
= NULL
;
3371 struct dom_sid
*owner_sid
= NULL
;
3372 struct dom_sid
*group_sid
= NULL
;
3373 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3374 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3375 bool inheritable_components
= false;
3378 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3379 return NT_STATUS_NO_MEMORY
;
3382 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3384 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3386 if (!NT_STATUS_IS_OK(status
)) {
3390 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3393 if (!inheritable_components
&& !inherit_owner
) {
3394 /* Nothing to inherit and not setting owner. */
3395 return NT_STATUS_OK
;
3398 /* Create an inherited descriptor from the parent. */
3400 if (DEBUGLEVEL
>= 10) {
3401 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3402 fsp_str_dbg(fsp
) ));
3403 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3406 /* Inherit from parent descriptor if "inherit owner" set. */
3407 if (inherit_owner
) {
3408 owner_sid
= parent_desc
->owner_sid
;
3409 group_sid
= parent_desc
->group_sid
;
3412 if (owner_sid
== NULL
) {
3413 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3415 if (group_sid
== NULL
) {
3416 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3419 status
= se_create_child_secdesc(ctx
,
3426 if (!NT_STATUS_IS_OK(status
)) {
3430 /* If inheritable_components == false,
3431 se_create_child_secdesc()
3432 creates a security desriptor with a NULL dacl
3433 entry, but with SEC_DESC_DACL_PRESENT. We need
3434 to remove that flag. */
3436 if (!inheritable_components
) {
3437 security_info_sent
&= ~SECINFO_DACL
;
3438 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3441 if (DEBUGLEVEL
>= 10) {
3442 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3443 fsp_str_dbg(fsp
) ));
3444 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3447 if (inherit_owner
) {
3448 /* We need to be root to force this. */
3451 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3454 if (inherit_owner
) {
3461 * Wrapper around open_file_ntcreate and open_directory
3464 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3465 struct smb_request
*req
,
3466 struct smb_filename
*smb_fname
,
3467 uint32_t access_mask
,
3468 uint32_t share_access
,
3469 uint32_t create_disposition
,
3470 uint32_t create_options
,
3471 uint32_t file_attributes
,
3472 uint32_t oplock_request
,
3473 uint64_t allocation_size
,
3474 uint32_t private_flags
,
3475 struct security_descriptor
*sd
,
3476 struct ea_list
*ea_list
,
3478 files_struct
**result
,
3481 int info
= FILE_WAS_OPENED
;
3482 files_struct
*base_fsp
= NULL
;
3483 files_struct
*fsp
= NULL
;
3486 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3487 "file_attributes = 0x%x, share_access = 0x%x, "
3488 "create_disposition = 0x%x create_options = 0x%x "
3489 "oplock_request = 0x%x private_flags = 0x%x "
3490 "ea_list = 0x%p, sd = 0x%p, "
3492 (unsigned int)access_mask
,
3493 (unsigned int)file_attributes
,
3494 (unsigned int)share_access
,
3495 (unsigned int)create_disposition
,
3496 (unsigned int)create_options
,
3497 (unsigned int)oplock_request
,
3498 (unsigned int)private_flags
,
3499 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3501 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3502 status
= NT_STATUS_NOT_SUPPORTED
;
3506 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3507 status
= NT_STATUS_INVALID_PARAMETER
;
3512 oplock_request
|= INTERNAL_OPEN_ONLY
;
3515 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3516 && (access_mask
& DELETE_ACCESS
)
3517 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3519 * We can't open a file with DELETE access if any of the
3520 * streams is open without FILE_SHARE_DELETE
3522 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3524 if (!NT_STATUS_IS_OK(status
)) {
3529 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3530 !security_token_has_privilege(get_current_nttok(conn
),
3531 SEC_PRIV_SECURITY
)) {
3532 DEBUG(10, ("create_file_unixpath: open on %s "
3533 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3534 smb_fname_str_dbg(smb_fname
)));
3535 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3539 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3540 && is_ntfs_stream_smb_fname(smb_fname
)
3541 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3542 uint32 base_create_disposition
;
3543 struct smb_filename
*smb_fname_base
= NULL
;
3545 if (create_options
& FILE_DIRECTORY_FILE
) {
3546 status
= NT_STATUS_NOT_A_DIRECTORY
;
3550 switch (create_disposition
) {
3552 base_create_disposition
= FILE_OPEN
;
3555 base_create_disposition
= FILE_OPEN_IF
;
3559 /* Create an smb_filename with stream_name == NULL. */
3560 status
= create_synthetic_smb_fname(talloc_tos(),
3561 smb_fname
->base_name
,
3564 if (!NT_STATUS_IS_OK(status
)) {
3568 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3569 DEBUG(10, ("Unable to stat stream: %s\n",
3570 smb_fname_str_dbg(smb_fname_base
)));
3573 /* Open the base file. */
3574 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3577 | FILE_SHARE_DELETE
,
3578 base_create_disposition
,
3579 0, 0, 0, 0, 0, NULL
, NULL
,
3581 TALLOC_FREE(smb_fname_base
);
3583 if (!NT_STATUS_IS_OK(status
)) {
3584 DEBUG(10, ("create_file_unixpath for base %s failed: "
3585 "%s\n", smb_fname
->base_name
,
3586 nt_errstr(status
)));
3589 /* we don't need to low level fd */
3594 * If it's a request for a directory open, deal with it separately.
3597 if (create_options
& FILE_DIRECTORY_FILE
) {
3599 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3600 status
= NT_STATUS_INVALID_PARAMETER
;
3604 /* Can't open a temp directory. IFS kit test. */
3605 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3606 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3607 status
= NT_STATUS_INVALID_PARAMETER
;
3612 * We will get a create directory here if the Win32
3613 * app specified a security descriptor in the
3614 * CreateDirectory() call.
3618 status
= open_directory(
3619 conn
, req
, smb_fname
, access_mask
, share_access
,
3620 create_disposition
, create_options
, file_attributes
,
3625 * Ordinary file case.
3628 status
= file_new(req
, conn
, &fsp
);
3629 if(!NT_STATUS_IS_OK(status
)) {
3633 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3634 if (!NT_STATUS_IS_OK(status
)) {
3639 * We're opening the stream element of a base_fsp
3640 * we already opened. Set up the base_fsp pointer.
3643 fsp
->base_fsp
= base_fsp
;
3646 if (allocation_size
) {
3647 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3651 status
= open_file_ntcreate(conn
,
3663 if(!NT_STATUS_IS_OK(status
)) {
3664 file_free(req
, fsp
);
3668 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3670 /* A stream open never opens a directory */
3673 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3678 * Fail the open if it was explicitly a non-directory
3682 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3683 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3688 status
= open_directory(
3689 conn
, req
, smb_fname
, access_mask
,
3690 share_access
, create_disposition
,
3691 create_options
, file_attributes
,
3696 if (!NT_STATUS_IS_OK(status
)) {
3700 fsp
->base_fsp
= base_fsp
;
3702 if ((ea_list
!= NULL
) &&
3703 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3704 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3705 if (!NT_STATUS_IS_OK(status
)) {
3710 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3711 status
= NT_STATUS_ACCESS_DENIED
;
3715 /* Save the requested allocation size. */
3716 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3718 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3719 fsp
->initial_allocation_size
= smb_roundup(
3720 fsp
->conn
, allocation_size
);
3721 if (fsp
->is_directory
) {
3722 /* Can't set allocation size on a directory. */
3723 status
= NT_STATUS_ACCESS_DENIED
;
3726 if (vfs_allocate_file_space(
3727 fsp
, fsp
->initial_allocation_size
) == -1) {
3728 status
= NT_STATUS_DISK_FULL
;
3732 fsp
->initial_allocation_size
= smb_roundup(
3733 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3736 fsp
->initial_allocation_size
= 0;
3739 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3740 fsp
->base_fsp
== NULL
) {
3743 * According to the MS documentation, the only time the security
3744 * descriptor is applied to the opened file is iff we *created* the
3745 * file; an existing file stays the same.
3747 * Also, it seems (from observation) that you can open the file with
3748 * any access mask but you can still write the sd. We need to override
3749 * the granted access before we call set_sd
3750 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3753 uint32_t sec_info_sent
;
3754 uint32_t saved_access_mask
= fsp
->access_mask
;
3756 sec_info_sent
= get_sec_info(sd
);
3758 fsp
->access_mask
= FILE_GENERIC_ALL
;
3760 if (sec_info_sent
& (SECINFO_OWNER
|
3764 status
= set_sd(fsp
, sd
, sec_info_sent
);
3767 fsp
->access_mask
= saved_access_mask
;
3769 if (!NT_STATUS_IS_OK(status
)) {
3772 } else if (lp_inherit_acls(SNUM(conn
))) {
3773 /* Inherit from parent. Errors here are not fatal. */
3774 status
= inherit_new_acl(fsp
);
3775 if (!NT_STATUS_IS_OK(status
)) {
3776 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3778 nt_errstr(status
) ));
3783 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3786 if (pinfo
!= NULL
) {
3790 smb_fname
->st
= fsp
->fsp_name
->st
;
3792 return NT_STATUS_OK
;
3795 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3798 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3800 * The close_file below will close
3805 close_file(req
, fsp
, ERROR_CLOSE
);
3808 if (base_fsp
!= NULL
) {
3809 close_file(req
, base_fsp
, ERROR_CLOSE
);
3816 * Calculate the full path name given a relative fid.
3818 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3819 struct smb_request
*req
,
3820 uint16_t root_dir_fid
,
3821 const struct smb_filename
*smb_fname
,
3822 struct smb_filename
**smb_fname_out
)
3824 files_struct
*dir_fsp
;
3825 char *parent_fname
= NULL
;
3826 char *new_base_name
= NULL
;
3829 if (root_dir_fid
== 0 || !smb_fname
) {
3830 status
= NT_STATUS_INTERNAL_ERROR
;
3834 dir_fsp
= file_fsp(req
, root_dir_fid
);
3836 if (dir_fsp
== NULL
) {
3837 status
= NT_STATUS_INVALID_HANDLE
;
3841 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3842 status
= NT_STATUS_INVALID_HANDLE
;
3846 if (!dir_fsp
->is_directory
) {
3849 * Check to see if this is a mac fork of some kind.
3852 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3853 is_ntfs_stream_smb_fname(smb_fname
)) {
3854 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3859 we need to handle the case when we get a
3860 relative open relative to a file and the
3861 pathname is blank - this is a reopen!
3862 (hint from demyn plantenberg)
3865 status
= NT_STATUS_INVALID_HANDLE
;
3869 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3871 * We're at the toplevel dir, the final file name
3872 * must not contain ./, as this is filtered out
3873 * normally by srvstr_get_path and unix_convert
3874 * explicitly rejects paths containing ./.
3876 parent_fname
= talloc_strdup(talloc_tos(), "");
3877 if (parent_fname
== NULL
) {
3878 status
= NT_STATUS_NO_MEMORY
;
3882 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3885 * Copy in the base directory name.
3888 parent_fname
= talloc_array(talloc_tos(), char,
3890 if (parent_fname
== NULL
) {
3891 status
= NT_STATUS_NO_MEMORY
;
3894 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3898 * Ensure it ends in a '/'.
3899 * We used TALLOC_SIZE +2 to add space for the '/'.
3903 && (parent_fname
[dir_name_len
-1] != '\\')
3904 && (parent_fname
[dir_name_len
-1] != '/')) {
3905 parent_fname
[dir_name_len
] = '/';
3906 parent_fname
[dir_name_len
+1] = '\0';
3910 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3911 smb_fname
->base_name
);
3912 if (new_base_name
== NULL
) {
3913 status
= NT_STATUS_NO_MEMORY
;
3917 status
= filename_convert(req
,
3919 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3924 if (!NT_STATUS_IS_OK(status
)) {
3929 TALLOC_FREE(parent_fname
);
3930 TALLOC_FREE(new_base_name
);
3934 NTSTATUS
create_file_default(connection_struct
*conn
,
3935 struct smb_request
*req
,
3936 uint16_t root_dir_fid
,
3937 struct smb_filename
*smb_fname
,
3938 uint32_t access_mask
,
3939 uint32_t share_access
,
3940 uint32_t create_disposition
,
3941 uint32_t create_options
,
3942 uint32_t file_attributes
,
3943 uint32_t oplock_request
,
3944 uint64_t allocation_size
,
3945 uint32_t private_flags
,
3946 struct security_descriptor
*sd
,
3947 struct ea_list
*ea_list
,
3948 files_struct
**result
,
3951 int info
= FILE_WAS_OPENED
;
3952 files_struct
*fsp
= NULL
;
3954 bool stream_name
= false;
3956 DEBUG(10,("create_file: access_mask = 0x%x "
3957 "file_attributes = 0x%x, share_access = 0x%x, "
3958 "create_disposition = 0x%x create_options = 0x%x "
3959 "oplock_request = 0x%x "
3960 "private_flags = 0x%x "
3961 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3963 (unsigned int)access_mask
,
3964 (unsigned int)file_attributes
,
3965 (unsigned int)share_access
,
3966 (unsigned int)create_disposition
,
3967 (unsigned int)create_options
,
3968 (unsigned int)oplock_request
,
3969 (unsigned int)private_flags
,
3970 (unsigned int)root_dir_fid
,
3971 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3974 * Calculate the filename from the root_dir_if if necessary.
3977 if (root_dir_fid
!= 0) {
3978 struct smb_filename
*smb_fname_out
= NULL
;
3979 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
3980 smb_fname
, &smb_fname_out
);
3981 if (!NT_STATUS_IS_OK(status
)) {
3984 smb_fname
= smb_fname_out
;
3988 * Check to see if this is a mac fork of some kind.
3991 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
3993 enum FAKE_FILE_TYPE fake_file_type
;
3995 fake_file_type
= is_fake_file(smb_fname
);
3997 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4000 * Here we go! support for changing the disk quotas
4003 * We need to fake up to open this MAGIC QUOTA file
4004 * and return a valid FID.
4006 * w2k close this file directly after openening xp
4007 * also tries a QUERY_FILE_INFO on the file and then
4010 status
= open_fake_file(req
, conn
, req
->vuid
,
4011 fake_file_type
, smb_fname
,
4013 if (!NT_STATUS_IS_OK(status
)) {
4017 ZERO_STRUCT(smb_fname
->st
);
4021 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4022 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4027 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4029 smb_fname
->stream_name
= NULL
;
4030 /* We have to handle this error here. */
4031 if (create_options
& FILE_DIRECTORY_FILE
) {
4032 status
= NT_STATUS_NOT_A_DIRECTORY
;
4035 if (lp_posix_pathnames()) {
4036 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4038 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4041 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4042 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4047 status
= create_file_unixpath(
4048 conn
, req
, smb_fname
, access_mask
, share_access
,
4049 create_disposition
, create_options
, file_attributes
,
4050 oplock_request
, allocation_size
, private_flags
,
4054 if (!NT_STATUS_IS_OK(status
)) {
4059 DEBUG(10, ("create_file: info=%d\n", info
));
4062 if (pinfo
!= NULL
) {
4065 return NT_STATUS_OK
;
4068 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4071 close_file(req
, fsp
, ERROR_CLOSE
);