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"
31 #include "../librpc/gen_ndr/idmap.h"
32 #include "passdb/lookup_sid.h"
36 #include "source3/lib/dbwrap/dbwrap_watch.h"
38 extern const struct generic_mapping file_generic_mapping
;
40 struct deferred_open_record
{
41 bool delayed_for_oplocks
;
46 /****************************************************************************
47 If the requester wanted DELETE_ACCESS and was rejected because
48 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
50 ****************************************************************************/
52 static bool parent_override_delete(connection_struct
*conn
,
53 const struct smb_filename
*smb_fname
,
55 uint32_t rejected_mask
)
57 if ((access_mask
& DELETE_ACCESS
) &&
58 (rejected_mask
& DELETE_ACCESS
) &&
59 can_delete_file_in_directory(conn
, smb_fname
)) {
65 /****************************************************************************
66 Check if we have open rights.
67 ****************************************************************************/
69 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
70 const struct smb_filename
*smb_fname
,
74 /* Check if we have rights to open. */
76 struct security_descriptor
*sd
= NULL
;
77 uint32_t rejected_share_access
;
78 uint32_t rejected_mask
= access_mask
;
79 uint32_t do_not_check_mask
= 0;
81 rejected_share_access
= access_mask
& ~(conn
->share_access
);
83 if (rejected_share_access
) {
84 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
86 (unsigned int)access_mask
,
87 smb_fname_str_dbg(smb_fname
),
88 (unsigned int)rejected_share_access
));
89 return NT_STATUS_ACCESS_DENIED
;
92 if (!use_privs
&& get_current_uid(conn
) == (uid_t
)0) {
93 /* I'm sorry sir, I didn't know you were root... */
94 DEBUG(10,("smbd_check_access_rights: root override "
95 "on %s. Granting 0x%x\n",
96 smb_fname_str_dbg(smb_fname
),
97 (unsigned int)access_mask
));
101 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
102 DEBUG(10,("smbd_check_access_rights: not checking ACL "
103 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
104 smb_fname_str_dbg(smb_fname
),
105 (unsigned int)access_mask
));
109 if (access_mask
== DELETE_ACCESS
&&
110 VALID_STAT(smb_fname
->st
) &&
111 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
112 /* We can always delete a symlink. */
113 DEBUG(10,("smbd_check_access_rights: not checking ACL "
114 "on DELETE_ACCESS on symlink %s.\n",
115 smb_fname_str_dbg(smb_fname
) ));
119 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
122 SECINFO_DACL
), talloc_tos(), &sd
);
124 if (!NT_STATUS_IS_OK(status
)) {
125 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
127 smb_fname_str_dbg(smb_fname
),
130 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
138 * If we can access the path to this file, by
139 * default we have FILE_READ_ATTRIBUTES from the
140 * containing directory. See the section:
141 * "Algorithm to Check Access to an Existing File"
144 * se_file_access_check() also takes care of
145 * owner WRITE_DAC and READ_CONTROL.
147 do_not_check_mask
= FILE_READ_ATTRIBUTES
;
150 * Samba 3.6 and earlier granted execute access even
151 * if the ACL did not contain execute rights.
152 * Samba 4.0 is more correct and checks it.
153 * The compatibilty mode allows to skip this check
154 * to smoothen upgrades.
156 if (lp_acl_allow_execute_always(SNUM(conn
))) {
157 do_not_check_mask
|= FILE_EXECUTE
;
160 status
= se_file_access_check(sd
,
161 get_current_nttok(conn
),
163 (access_mask
& ~do_not_check_mask
),
166 DEBUG(10,("smbd_check_access_rights: file %s requesting "
167 "0x%x returning 0x%x (%s)\n",
168 smb_fname_str_dbg(smb_fname
),
169 (unsigned int)access_mask
,
170 (unsigned int)rejected_mask
,
171 nt_errstr(status
) ));
173 if (!NT_STATUS_IS_OK(status
)) {
174 if (DEBUGLEVEL
>= 10) {
175 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
176 smb_fname_str_dbg(smb_fname
) ));
177 NDR_PRINT_DEBUG(security_descriptor
, sd
);
183 if (NT_STATUS_IS_OK(status
) ||
184 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
188 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
192 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
193 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
194 !lp_store_dos_attributes(SNUM(conn
)) &&
195 (lp_map_readonly(SNUM(conn
)) ||
196 lp_map_archive(SNUM(conn
)) ||
197 lp_map_hidden(SNUM(conn
)) ||
198 lp_map_system(SNUM(conn
)))) {
199 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
201 DEBUG(10,("smbd_check_access_rights: "
203 "FILE_WRITE_ATTRIBUTES "
205 smb_fname_str_dbg(smb_fname
)));
208 if (parent_override_delete(conn
,
212 /* Were we trying to do an open
213 * for delete and didn't get DELETE
214 * access (only) ? Check if the
215 * directory allows DELETE_CHILD.
217 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
220 rejected_mask
&= ~DELETE_ACCESS
;
222 DEBUG(10,("smbd_check_access_rights: "
226 smb_fname_str_dbg(smb_fname
)));
229 if (rejected_mask
!= 0) {
230 return NT_STATUS_ACCESS_DENIED
;
235 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
236 struct smb_filename
*smb_fname
,
237 uint32_t access_mask
)
240 char *parent_dir
= NULL
;
241 struct security_descriptor
*parent_sd
= NULL
;
242 uint32_t access_granted
= 0;
244 if (!parent_dirname(talloc_tos(),
245 smb_fname
->base_name
,
248 return NT_STATUS_NO_MEMORY
;
251 if (get_current_uid(conn
) == (uid_t
)0) {
252 /* I'm sorry sir, I didn't know you were root... */
253 DEBUG(10,("check_parent_access: root override "
254 "on %s. Granting 0x%x\n",
255 smb_fname_str_dbg(smb_fname
),
256 (unsigned int)access_mask
));
260 status
= SMB_VFS_GET_NT_ACL(conn
,
266 if (!NT_STATUS_IS_OK(status
)) {
267 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
268 "%s with error %s\n",
275 * If we can access the path to this file, by
276 * default we have FILE_READ_ATTRIBUTES from the
277 * containing directory. See the section:
278 * "Algorithm to Check Access to an Existing File"
281 * se_file_access_check() also takes care of
282 * owner WRITE_DAC and READ_CONTROL.
284 status
= se_file_access_check(parent_sd
,
285 get_current_nttok(conn
),
287 (access_mask
& ~FILE_READ_ATTRIBUTES
),
289 if(!NT_STATUS_IS_OK(status
)) {
290 DEBUG(5,("check_parent_access: access check "
291 "on directory %s for "
292 "path %s for mask 0x%x returned (0x%x) %s\n",
294 smb_fname
->base_name
,
297 nt_errstr(status
) ));
304 /****************************************************************************
305 Ensure when opening a base file for a stream open that we have permissions
306 to do so given the access mask on the base file.
307 ****************************************************************************/
309 static NTSTATUS
check_base_file_access(struct connection_struct
*conn
,
310 struct smb_filename
*smb_fname
,
311 uint32_t access_mask
)
315 status
= smbd_calculate_access_mask(conn
, smb_fname
,
319 if (!NT_STATUS_IS_OK(status
)) {
320 DEBUG(10, ("smbd_calculate_access_mask "
321 "on file %s returned %s\n",
322 smb_fname_str_dbg(smb_fname
),
327 if (access_mask
& (FILE_WRITE_DATA
|FILE_APPEND_DATA
)) {
329 if (!CAN_WRITE(conn
)) {
330 return NT_STATUS_ACCESS_DENIED
;
332 dosattrs
= dos_mode(conn
, smb_fname
);
333 if (IS_DOS_READONLY(dosattrs
)) {
334 return NT_STATUS_ACCESS_DENIED
;
338 return smbd_check_access_rights(conn
,
344 /****************************************************************************
345 fd support routines - attempt to do a dos_open.
346 ****************************************************************************/
348 NTSTATUS
fd_open(struct connection_struct
*conn
,
353 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
354 NTSTATUS status
= NT_STATUS_OK
;
358 * Never follow symlinks on a POSIX client. The
359 * client should be doing this.
362 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
367 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
368 if (fsp
->fh
->fd
== -1) {
369 int posix_errno
= errno
;
371 #if defined(ENOTSUP) && defined(OSF1)
372 /* handle special Tru64 errno */
373 if (errno
== ENOTSUP
) {
378 /* fix broken NetBSD errno */
379 if (errno
== EFTYPE
) {
383 /* fix broken FreeBSD errno */
384 if (errno
== EMLINK
) {
387 #endif /* O_NOFOLLOW */
388 status
= map_nt_error_from_unix(posix_errno
);
389 if (errno
== EMFILE
) {
390 static time_t last_warned
= 0L;
392 if (time((time_t *) NULL
) > last_warned
) {
393 DEBUG(0,("Too many open files, unable "
394 "to open more! smbd's max "
396 lp_max_open_files()));
397 last_warned
= time((time_t *) NULL
);
403 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
404 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
405 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
410 /****************************************************************************
411 Close the file associated with a fsp.
412 ****************************************************************************/
414 NTSTATUS
fd_close(files_struct
*fsp
)
421 if (fsp
->fh
->fd
== -1) {
422 return NT_STATUS_OK
; /* What we used to call a stat open. */
424 if (fsp
->fh
->ref_count
> 1) {
425 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
428 ret
= SMB_VFS_CLOSE(fsp
);
431 return map_nt_error_from_unix(errno
);
436 /****************************************************************************
437 Change the ownership of a file to that of the parent directory.
438 Do this by fd if possible.
439 ****************************************************************************/
441 void change_file_owner_to_parent(connection_struct
*conn
,
442 const char *inherit_from_dir
,
445 struct smb_filename
*smb_fname_parent
;
448 smb_fname_parent
= synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
450 if (smb_fname_parent
== NULL
) {
454 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
456 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
457 "directory %s. Error was %s\n",
458 smb_fname_str_dbg(smb_fname_parent
),
460 TALLOC_FREE(smb_fname_parent
);
464 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
465 /* Already this uid - no need to change. */
466 DEBUG(10,("change_file_owner_to_parent: file %s "
467 "is already owned by uid %d\n",
469 (int)fsp
->fsp_name
->st
.st_ex_uid
));
470 TALLOC_FREE(smb_fname_parent
);
475 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
478 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
479 "file %s to parent directory uid %u. Error "
480 "was %s\n", fsp_str_dbg(fsp
),
481 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
484 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
485 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
486 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
487 /* Ensure the uid entry is updated. */
488 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
491 TALLOC_FREE(smb_fname_parent
);
494 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
495 const char *inherit_from_dir
,
497 SMB_STRUCT_STAT
*psbuf
)
499 struct smb_filename
*smb_fname_parent
;
500 struct smb_filename
*smb_fname_cwd
= NULL
;
501 char *saved_dir
= NULL
;
502 TALLOC_CTX
*ctx
= talloc_tos();
503 NTSTATUS status
= NT_STATUS_OK
;
506 smb_fname_parent
= synthetic_smb_fname(ctx
, inherit_from_dir
,
508 if (smb_fname_parent
== NULL
) {
509 return NT_STATUS_NO_MEMORY
;
512 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
514 status
= map_nt_error_from_unix(errno
);
515 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
516 "directory %s. Error was %s\n",
517 smb_fname_str_dbg(smb_fname_parent
),
522 /* We've already done an lstat into psbuf, and we know it's a
523 directory. If we can cd into the directory and the dev/ino
524 are the same then we can safely chown without races as
525 we're locking the directory in place by being in it. This
526 should work on any UNIX (thanks tridge :-). JRA.
529 saved_dir
= vfs_GetWd(ctx
,conn
);
531 status
= map_nt_error_from_unix(errno
);
532 DEBUG(0,("change_dir_owner_to_parent: failed to get "
533 "current working directory. Error was %s\n",
538 /* Chdir into the new path. */
539 if (vfs_ChDir(conn
, fname
) == -1) {
540 status
= map_nt_error_from_unix(errno
);
541 DEBUG(0,("change_dir_owner_to_parent: failed to change "
542 "current working directory to %s. Error "
543 "was %s\n", fname
, strerror(errno
) ));
547 smb_fname_cwd
= synthetic_smb_fname(ctx
, ".", NULL
, NULL
);
548 if (smb_fname_cwd
== NULL
) {
549 status
= NT_STATUS_NO_MEMORY
;
553 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
555 status
= map_nt_error_from_unix(errno
);
556 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
557 "directory '.' (%s) Error was %s\n",
558 fname
, strerror(errno
)));
562 /* Ensure we're pointing at the same place. */
563 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
564 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
565 DEBUG(0,("change_dir_owner_to_parent: "
566 "device/inode on directory %s changed. "
567 "Refusing to chown !\n", fname
));
568 status
= NT_STATUS_ACCESS_DENIED
;
572 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
573 /* Already this uid - no need to change. */
574 DEBUG(10,("change_dir_owner_to_parent: directory %s "
575 "is already owned by uid %d\n",
577 (int)smb_fname_cwd
->st
.st_ex_uid
));
578 status
= NT_STATUS_OK
;
583 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
587 status
= map_nt_error_from_unix(errno
);
588 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
589 "directory %s to parent directory uid %u. "
590 "Error was %s\n", fname
,
591 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
594 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
595 "directory %s to parent directory uid %u.\n",
596 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
597 /* Ensure the uid entry is updated. */
598 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
602 vfs_ChDir(conn
,saved_dir
);
604 TALLOC_FREE(smb_fname_parent
);
605 TALLOC_FREE(smb_fname_cwd
);
609 /****************************************************************************
610 Open a file - returning a guaranteed ATOMIC indication of if the
611 file was created or not.
612 ****************************************************************************/
614 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
620 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
621 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
623 *file_created
= false;
625 if (!(flags
& O_CREAT
)) {
627 * We're not creating the file, just pass through.
629 return fd_open(conn
, fsp
, flags
, mode
);
632 if (flags
& O_EXCL
) {
634 * Fail if already exists, just pass through.
636 status
= fd_open(conn
, fsp
, flags
, mode
);
639 * Here we've opened with O_CREAT|O_EXCL. If that went
640 * NT_STATUS_OK, we *know* we created this file.
642 *file_created
= NT_STATUS_IS_OK(status
);
648 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
649 * To know absolutely if we created the file or not,
650 * we can never call O_CREAT without O_EXCL. So if
651 * we think the file existed, try without O_CREAT|O_EXCL.
652 * If we think the file didn't exist, try with
653 * O_CREAT|O_EXCL. Keep bouncing between these two
654 * requests until either the file is created, or
655 * opened. Either way, we keep going until we get
656 * a returnable result (error, or open/create).
660 int curr_flags
= flags
;
663 /* Just try open, do not create. */
664 curr_flags
&= ~(O_CREAT
);
665 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
666 if (NT_STATUS_EQUAL(status
,
667 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
669 * Someone deleted it in the meantime.
672 file_existed
= false;
673 DEBUG(10,("fd_open_atomic: file %s existed. "
675 smb_fname_str_dbg(fsp
->fsp_name
)));
679 /* Try create exclusively, fail if it exists. */
680 curr_flags
|= O_EXCL
;
681 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
682 if (NT_STATUS_EQUAL(status
,
683 NT_STATUS_OBJECT_NAME_COLLISION
)) {
685 * Someone created it in the meantime.
686 * Retry without O_CREAT.
689 DEBUG(10,("fd_open_atomic: file %s "
690 "did not exist. Retry.\n",
691 smb_fname_str_dbg(fsp
->fsp_name
)));
694 if (NT_STATUS_IS_OK(status
)) {
696 * Here we've opened with O_CREAT|O_EXCL
697 * and got success. We *know* we created
700 *file_created
= true;
703 /* Create is done, or failed. */
709 /****************************************************************************
711 ****************************************************************************/
713 static NTSTATUS
open_file(files_struct
*fsp
,
714 connection_struct
*conn
,
715 struct smb_request
*req
,
716 const char *parent_dir
,
719 uint32 access_mask
, /* client requested access mask. */
720 uint32 open_access_mask
, /* what we're actually using in the open. */
721 bool *p_file_created
)
723 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
724 NTSTATUS status
= NT_STATUS_OK
;
725 int accmode
= (flags
& O_ACCMODE
);
726 int local_flags
= flags
;
727 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
732 /* Check permissions */
735 * This code was changed after seeing a client open request
736 * containing the open mode of (DENY_WRITE/read-only) with
737 * the 'create if not exist' bit set. The previous code
738 * would fail to open the file read only on a read-only share
739 * as it was checking the flags parameter directly against O_RDONLY,
740 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
744 if (!CAN_WRITE(conn
)) {
745 /* It's a read-only share - fail if we wanted to write. */
746 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
747 DEBUG(3,("Permission denied opening %s\n",
748 smb_fname_str_dbg(smb_fname
)));
749 return NT_STATUS_ACCESS_DENIED
;
751 if (flags
& O_CREAT
) {
752 /* We don't want to write - but we must make sure that
753 O_CREAT doesn't create the file if we have write
754 access into the directory.
756 flags
&= ~(O_CREAT
|O_EXCL
);
757 local_flags
&= ~(O_CREAT
|O_EXCL
);
762 * This little piece of insanity is inspired by the
763 * fact that an NT client can open a file for O_RDONLY,
764 * but set the create disposition to FILE_EXISTS_TRUNCATE.
765 * If the client *can* write to the file, then it expects to
766 * truncate the file, even though it is opening for readonly.
767 * Quicken uses this stupid trick in backup file creation...
768 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
769 * for helping track this one down. It didn't bite us in 2.0.x
770 * as we always opened files read-write in that release. JRA.
773 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
774 DEBUG(10,("open_file: truncate requested on read-only open "
775 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
776 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
779 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
780 (!file_existed
&& (local_flags
& O_CREAT
)) ||
781 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
785 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
787 * We would block on opening a FIFO with no one else on the
788 * other end. Do what we used to do and add O_NONBLOCK to the
792 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
793 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
794 local_flags
|= O_NONBLOCK
;
798 /* Don't create files with Microsoft wildcard characters. */
801 * wildcard characters are allowed in stream names
802 * only test the basefilename
804 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
806 wild
= smb_fname
->base_name
;
808 if ((local_flags
& O_CREAT
) && !file_existed
&&
810 return NT_STATUS_OBJECT_NAME_INVALID
;
813 /* Can we access this file ? */
814 if (!fsp
->base_fsp
) {
815 /* Only do this check on non-stream open. */
817 status
= smbd_check_access_rights(conn
,
822 if (!NT_STATUS_IS_OK(status
)) {
823 DEBUG(10, ("open_file: "
824 "smbd_check_access_rights "
825 "on file %s returned %s\n",
826 smb_fname_str_dbg(smb_fname
),
830 if (!NT_STATUS_IS_OK(status
) &&
831 !NT_STATUS_EQUAL(status
,
832 NT_STATUS_OBJECT_NAME_NOT_FOUND
))
837 if (NT_STATUS_EQUAL(status
,
838 NT_STATUS_OBJECT_NAME_NOT_FOUND
))
840 DEBUG(10, ("open_file: "
841 "file %s vanished since we "
842 "checked for existence.\n",
843 smb_fname_str_dbg(smb_fname
)));
844 file_existed
= false;
845 SET_STAT_INVALID(fsp
->fsp_name
->st
);
850 if (!(local_flags
& O_CREAT
)) {
851 /* File didn't exist and no O_CREAT. */
852 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
855 status
= check_parent_access(conn
,
858 if (!NT_STATUS_IS_OK(status
)) {
859 DEBUG(10, ("open_file: "
860 "check_parent_access on "
861 "file %s returned %s\n",
862 smb_fname_str_dbg(smb_fname
),
863 nt_errstr(status
) ));
870 * Actually do the open - if O_TRUNC is needed handle it
871 * below under the share mode lock.
873 status
= fd_open_atomic(conn
, fsp
, local_flags
& ~O_TRUNC
,
874 unx_mode
, p_file_created
);
875 if (!NT_STATUS_IS_OK(status
)) {
876 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
877 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
878 nt_errstr(status
),local_flags
,flags
));
882 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
884 /* If we have an fd, this stat should succeed. */
885 DEBUG(0,("Error doing fstat on open file %s "
887 smb_fname_str_dbg(smb_fname
),
889 status
= map_nt_error_from_unix(errno
);
894 if (*p_file_created
) {
895 /* We created this file. */
897 bool need_re_stat
= false;
898 /* Do all inheritance work after we've
899 done a successful fstat call and filled
900 in the stat struct in fsp->fsp_name. */
902 /* Inherit the ACL if required */
903 if (lp_inherit_perms(SNUM(conn
))) {
904 inherit_access_posix_acl(conn
, parent_dir
,
905 smb_fname
->base_name
,
910 /* Change the owner if required. */
911 if (lp_inherit_owner(SNUM(conn
))) {
912 change_file_owner_to_parent(conn
, parent_dir
,
918 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
919 /* If we have an fd, this stat should succeed. */
921 DEBUG(0,("Error doing fstat on open file %s "
923 smb_fname_str_dbg(smb_fname
),
928 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
929 FILE_NOTIFY_CHANGE_FILE_NAME
,
930 smb_fname
->base_name
);
933 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
935 /* File must exist for a stat open. */
936 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
939 status
= smbd_check_access_rights(conn
,
944 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
946 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
947 /* This is a POSIX stat open for delete
948 * or rename on a symlink that points
950 DEBUG(10,("open_file: allowing POSIX "
951 "open on bad symlink %s\n",
952 smb_fname_str_dbg(smb_fname
)));
953 status
= NT_STATUS_OK
;
956 if (!NT_STATUS_IS_OK(status
)) {
957 DEBUG(10,("open_file: "
958 "smbd_check_access_rights on file "
960 smb_fname_str_dbg(smb_fname
),
961 nt_errstr(status
) ));
967 * POSIX allows read-only opens of directories. We don't
968 * want to do this (we use a different code path for this)
969 * so catch a directory open and return an EISDIR. JRA.
972 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
975 return NT_STATUS_FILE_IS_A_DIRECTORY
;
978 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
979 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
980 fsp
->file_pid
= req
? req
->smbpid
: 0;
981 fsp
->can_lock
= True
;
982 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
985 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
986 fsp
->print_file
= NULL
;
987 fsp
->modified
= False
;
988 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
989 fsp
->is_directory
= False
;
990 if (conn
->aio_write_behind_list
&&
991 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
992 conn
->case_sensitive
)) {
993 fsp
->aio_write_behind
= True
;
996 fsp
->wcp
= NULL
; /* Write cache pointer. */
998 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
999 conn
->session_info
->unix_info
->unix_name
,
1000 smb_fname_str_dbg(smb_fname
),
1001 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
1002 conn
->num_files_open
));
1005 return NT_STATUS_OK
;
1008 /****************************************************************************
1009 Check if we can open a file with a share mode.
1010 Returns True if conflict, False if not.
1011 ****************************************************************************/
1013 static bool share_conflict(struct share_mode_entry
*entry
,
1015 uint32 share_access
)
1017 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
1018 "entry->share_access = 0x%x, "
1019 "entry->private_options = 0x%x\n",
1020 (unsigned int)entry
->access_mask
,
1021 (unsigned int)entry
->share_access
,
1022 (unsigned int)entry
->private_options
));
1024 if (server_id_is_disconnected(&entry
->pid
)) {
1026 * note: cleanup should have been done by
1027 * delay_for_batch_oplocks()
1032 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
1033 (unsigned int)access_mask
, (unsigned int)share_access
));
1035 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
1039 DELETE_ACCESS
)) == 0) {
1040 DEBUG(10,("share_conflict: No conflict due to "
1041 "entry->access_mask = 0x%x\n",
1042 (unsigned int)entry
->access_mask
));
1046 if ((access_mask
& (FILE_WRITE_DATA
|
1050 DELETE_ACCESS
)) == 0) {
1051 DEBUG(10,("share_conflict: No conflict due to "
1052 "access_mask = 0x%x\n",
1053 (unsigned int)access_mask
));
1057 #if 1 /* JRA TEST - Superdebug. */
1058 #define CHECK_MASK(num, am, right, sa, share) \
1059 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
1060 (unsigned int)(num), (unsigned int)(am), \
1061 (unsigned int)(right), (unsigned int)(am)&(right) )); \
1062 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
1063 (unsigned int)(num), (unsigned int)(sa), \
1064 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
1065 if (((am) & (right)) && !((sa) & (share))) { \
1066 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
1067 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
1068 (unsigned int)(share) )); \
1072 #define CHECK_MASK(num, am, right, sa, share) \
1073 if (((am) & (right)) && !((sa) & (share))) { \
1074 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
1075 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
1076 (unsigned int)(share) )); \
1081 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
1082 share_access
, FILE_SHARE_WRITE
);
1083 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
1084 entry
->share_access
, FILE_SHARE_WRITE
);
1086 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
1087 share_access
, FILE_SHARE_READ
);
1088 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
1089 entry
->share_access
, FILE_SHARE_READ
);
1091 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
1092 share_access
, FILE_SHARE_DELETE
);
1093 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
1094 entry
->share_access
, FILE_SHARE_DELETE
);
1096 DEBUG(10,("share_conflict: No conflict.\n"));
1100 #if defined(DEVELOPER)
1101 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1103 struct share_mode_entry
*share_entry
)
1105 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1108 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1112 if (share_entry
->op_mid
== 0) {
1113 /* INTERNAL_OPEN_ONLY */
1117 if (!is_valid_share_mode_entry(share_entry
)) {
1121 fsp
= file_find_dif(sconn
, share_entry
->id
,
1122 share_entry
->share_file_id
);
1124 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1125 share_mode_str(talloc_tos(), num
, share_entry
) ));
1126 smb_panic("validate_my_share_entries: Cannot match a "
1127 "share entry with an open file\n");
1130 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1131 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
))
1133 /* Someone has already written to it, but I haven't yet
1138 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1147 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1148 share_mode_str(talloc_tos(), num
, share_entry
) ));
1149 str
= talloc_asprintf(talloc_tos(),
1150 "validate_my_share_entries: "
1151 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1152 fsp
->fsp_name
->base_name
,
1153 (unsigned int)fsp
->oplock_type
,
1154 (unsigned int)share_entry
->op_type
);
1160 bool is_stat_open(uint32 access_mask
)
1162 const uint32_t stat_open_bits
=
1163 (SYNCHRONIZE_ACCESS
|
1164 FILE_READ_ATTRIBUTES
|
1165 FILE_WRITE_ATTRIBUTES
);
1167 return (((access_mask
& stat_open_bits
) != 0) &&
1168 ((access_mask
& ~stat_open_bits
) == 0));
1171 /****************************************************************************
1172 Deal with share modes
1173 Invarient: Share mode must be locked on entry and exit.
1174 Returns -1 on error, or number of share modes on success (may be zero).
1175 ****************************************************************************/
1177 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1178 struct share_mode_lock
*lck
,
1181 uint32 share_access
,
1182 uint32 create_options
,
1187 if(lck
->data
->num_share_modes
== 0) {
1188 return NT_STATUS_OK
;
1191 /* A delete on close prohibits everything */
1193 if (is_delete_on_close_set(lck
, name_hash
)) {
1195 * Check the delete on close token
1196 * is valid. It could have been left
1197 * after a server crash.
1199 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1200 if (!share_mode_stale_pid(lck
->data
, i
)) {
1202 *file_existed
= true;
1204 return NT_STATUS_DELETE_PENDING
;
1207 return NT_STATUS_OK
;
1210 if (is_stat_open(access_mask
)) {
1211 /* Stat open that doesn't trigger oplock breaks or share mode
1212 * checks... ! JRA. */
1213 return NT_STATUS_OK
;
1217 * Check if the share modes will give us access.
1220 #if defined(DEVELOPER)
1221 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1222 validate_my_share_entries(conn
->sconn
, i
,
1223 &lck
->data
->share_modes
[i
]);
1227 /* Now we check the share modes, after any oplock breaks. */
1228 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1230 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1234 /* someone else has a share lock on it, check to see if we can
1236 if (share_conflict(&lck
->data
->share_modes
[i
],
1237 access_mask
, share_access
)) {
1239 if (share_mode_stale_pid(lck
->data
, i
)) {
1243 *file_existed
= true;
1245 return NT_STATUS_SHARING_VIOLATION
;
1249 if (lck
->data
->num_share_modes
!= 0) {
1250 *file_existed
= true;
1253 return NT_STATUS_OK
;
1257 * Send a break message to the oplock holder and delay the open for
1261 static NTSTATUS
send_break_message(files_struct
*fsp
,
1262 struct share_mode_entry
*exclusive
,
1267 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1269 DEBUG(10, ("Sending break request to PID %s\n",
1270 procid_str_static(&exclusive
->pid
)));
1271 exclusive
->op_mid
= mid
;
1273 /* Create the message. */
1274 share_mode_entry_to_message(msg
, exclusive
);
1276 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1277 don't want this set in the share mode struct pointed to by lck. */
1279 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1280 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1281 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1284 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1285 MSG_SMB_BREAK_REQUEST
,
1287 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1288 if (!NT_STATUS_IS_OK(status
)) {
1289 DEBUG(3, ("Could not send oplock break message: %s\n",
1290 nt_errstr(status
)));
1297 * Return share_mode_entry pointers for :
1298 * 1). Batch oplock entry.
1299 * 2). Batch or exclusive oplock entry (may be identical to #1).
1300 * bool have_level2_oplock
1301 * bool have_no_oplock.
1302 * Do internal consistency checks on the share mode for a file.
1305 static void find_oplock_types(files_struct
*fsp
,
1307 const struct share_mode_lock
*lck
,
1308 struct share_mode_entry
**pp_batch
,
1309 struct share_mode_entry
**pp_ex_or_batch
,
1311 bool *got_no_oplock
)
1316 *pp_ex_or_batch
= NULL
;
1317 *got_level2
= false;
1318 *got_no_oplock
= false;
1320 /* Ignore stat or internal opens, as is done in
1321 delay_for_batch_oplocks() and
1322 delay_for_exclusive_oplocks().
1324 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1328 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1329 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1331 if (!is_valid_share_mode_entry(e
)) {
1335 if (e
->op_mid
== 0) {
1336 /* INTERNAL_OPEN_ONLY */
1340 if (e
->op_type
== NO_OPLOCK
&& is_stat_open(e
->access_mask
)) {
1341 /* We ignore stat opens in the table - they
1342 always have NO_OPLOCK and never get or
1343 cause breaks. JRA. */
1347 if (BATCH_OPLOCK_TYPE(e
->op_type
)) {
1348 /* batch - can only be one. */
1349 if (share_mode_stale_pid(lck
->data
, i
)) {
1350 DEBUG(10, ("Found stale batch oplock\n"));
1353 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1354 smb_panic("Bad batch oplock entry.");
1359 if (EXCLUSIVE_OPLOCK_TYPE(e
->op_type
)) {
1360 if (share_mode_stale_pid(lck
->data
, i
)) {
1361 DEBUG(10, ("Found stale duplicate oplock\n"));
1364 /* Exclusive or batch - can only be one. */
1365 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1366 smb_panic("Bad exclusive or batch oplock entry.");
1368 *pp_ex_or_batch
= e
;
1371 if (LEVEL_II_OPLOCK_TYPE(e
->op_type
)) {
1372 if (*pp_batch
|| *pp_ex_or_batch
) {
1373 if (share_mode_stale_pid(lck
->data
, i
)) {
1374 DEBUG(10, ("Found stale LevelII "
1378 smb_panic("Bad levelII oplock entry.");
1383 if (e
->op_type
== NO_OPLOCK
) {
1384 if (*pp_batch
|| *pp_ex_or_batch
) {
1385 if (share_mode_stale_pid(lck
->data
, i
)) {
1386 DEBUG(10, ("Found stale NO_OPLOCK "
1390 smb_panic("Bad no oplock entry.");
1392 *got_no_oplock
= true;
1397 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1400 struct share_mode_entry
*batch_entry
)
1402 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1405 if (batch_entry
== NULL
) {
1409 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1412 * This could be achieved by sending a break message
1413 * to ourselves. Special considerations for files
1414 * with delete_on_close flag set!
1416 * For now we keep it simple and do not
1417 * allow delete on close for durable handles.
1422 /* Found a batch oplock */
1423 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1427 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1430 struct share_mode_entry
*ex_entry
)
1432 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1435 if (ex_entry
== NULL
) {
1439 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1441 * since only durable handles can get disconnected,
1442 * and we can only get durable handles with batch oplocks,
1443 * this should actually never be reached...
1448 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1452 static bool file_has_brlocks(files_struct
*fsp
)
1454 struct byte_range_lock
*br_lck
;
1456 br_lck
= brl_get_locks_readonly(fsp
);
1460 return br_lck
->num_locks
> 0 ? true : false;
1463 static void grant_fsp_oplock_type(files_struct
*fsp
,
1465 bool got_level2_oplock
,
1466 bool got_a_none_oplock
)
1468 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1469 lp_level2_oplocks(SNUM(fsp
->conn
));
1471 /* Start by granting what the client asked for,
1472 but ensure no SAMBA_PRIVATE bits can be set. */
1473 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1475 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1476 /* No oplocks on internal open. */
1477 fsp
->oplock_type
= NO_OPLOCK
;
1478 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1479 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1483 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1484 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1486 fsp
->oplock_type
= NO_OPLOCK
;
1489 if (is_stat_open(fsp
->access_mask
)) {
1490 /* Leave the value already set. */
1491 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1492 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1497 * Match what was requested (fsp->oplock_type) with
1498 * what was found in the existing share modes.
1501 if (got_a_none_oplock
) {
1502 fsp
->oplock_type
= NO_OPLOCK
;
1503 } else if (got_level2_oplock
) {
1504 if (fsp
->oplock_type
== NO_OPLOCK
||
1505 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1506 /* Store a level2 oplock, but don't tell the client */
1507 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1509 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1512 /* All share_mode_entries are placeholders or deferred.
1513 * Silently upgrade to fake levelII if the client didn't
1514 * ask for an oplock. */
1515 if (fsp
->oplock_type
== NO_OPLOCK
) {
1516 /* Store a level2 oplock, but don't tell the client */
1517 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1522 * Don't grant level2 to clients that don't want them
1523 * or if we've turned them off.
1525 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1526 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1529 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1530 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1533 static bool request_timed_out(struct timeval request_time
,
1534 struct timeval timeout
)
1536 struct timeval now
, end_time
;
1538 end_time
= timeval_sum(&request_time
, &timeout
);
1539 return (timeval_compare(&end_time
, &now
) < 0);
1542 struct defer_open_state
{
1543 struct smbd_server_connection
*sconn
;
1547 static void defer_open_done(struct tevent_req
*req
);
1549 /****************************************************************************
1550 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1551 ****************************************************************************/
1553 static void defer_open(struct share_mode_lock
*lck
,
1554 struct timeval request_time
,
1555 struct timeval timeout
,
1556 struct smb_request
*req
,
1557 struct deferred_open_record
*state
)
1559 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1560 "open entry for mid %llu\n",
1561 (unsigned int)request_time
.tv_sec
,
1562 (unsigned int)request_time
.tv_usec
,
1563 (unsigned long long)req
->mid
));
1565 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1566 state
->id
, (char *)state
, sizeof(*state
))) {
1568 exit_server("push_deferred_open_message_smb failed");
1571 struct defer_open_state
*watch_state
;
1572 struct tevent_req
*watch_req
;
1575 watch_state
= talloc(req
->sconn
, struct defer_open_state
);
1576 if (watch_state
== NULL
) {
1577 exit_server("talloc failed");
1579 watch_state
->sconn
= req
->sconn
;
1580 watch_state
->mid
= req
->mid
;
1582 DEBUG(10, ("defering mid %llu\n",
1583 (unsigned long long)req
->mid
));
1585 watch_req
= dbwrap_record_watch_send(
1586 watch_state
, req
->sconn
->ev_ctx
, lck
->data
->record
,
1587 req
->sconn
->msg_ctx
);
1588 if (watch_req
== NULL
) {
1589 exit_server("Could not watch share mode record");
1591 tevent_req_set_callback(watch_req
, defer_open_done
,
1594 ret
= tevent_req_set_endtime(
1595 watch_req
, req
->sconn
->ev_ctx
,
1596 timeval_sum(&request_time
, &timeout
));
1601 static void defer_open_done(struct tevent_req
*req
)
1603 struct defer_open_state
*state
= tevent_req_callback_data(
1604 req
, struct defer_open_state
);
1608 status
= dbwrap_record_watch_recv(req
, talloc_tos(), NULL
);
1610 if (!NT_STATUS_IS_OK(status
)) {
1611 DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
1612 nt_errstr(status
)));
1614 * Even if it failed, retry anyway. TODO: We need a way to
1615 * tell a re-scheduled open about that error.
1619 DEBUG(10, ("scheduling mid %llu\n", (unsigned long long)state
->mid
));
1621 ret
= schedule_deferred_open_message_smb(state
->sconn
, state
->mid
);
1627 /****************************************************************************
1628 On overwrite open ensure that the attributes match.
1629 ****************************************************************************/
1631 static bool open_match_attributes(connection_struct
*conn
,
1632 uint32 old_dos_attr
,
1633 uint32 new_dos_attr
,
1634 mode_t existing_unx_mode
,
1635 mode_t new_unx_mode
,
1636 mode_t
*returned_unx_mode
)
1638 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1640 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1641 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1643 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1644 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1645 *returned_unx_mode
= new_unx_mode
;
1647 *returned_unx_mode
= (mode_t
)0;
1650 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1651 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1652 "returned_unx_mode = 0%o\n",
1653 (unsigned int)old_dos_attr
,
1654 (unsigned int)existing_unx_mode
,
1655 (unsigned int)new_dos_attr
,
1656 (unsigned int)*returned_unx_mode
));
1658 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1659 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1660 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1661 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1665 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1666 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1667 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1674 /****************************************************************************
1675 Special FCB or DOS processing in the case of a sharing violation.
1676 Try and find a duplicated file handle.
1677 ****************************************************************************/
1679 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1680 connection_struct
*conn
,
1681 files_struct
*fsp_to_dup_into
,
1682 const struct smb_filename
*smb_fname
,
1687 uint32 share_access
,
1688 uint32 create_options
)
1692 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1693 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1695 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1696 fsp
= file_find_di_next(fsp
)) {
1698 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1699 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1700 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1701 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1702 (unsigned int)fsp
->file_pid
,
1703 (unsigned int)fsp
->fh
->private_options
,
1704 (unsigned int)fsp
->access_mask
));
1706 if (fsp
!= fsp_to_dup_into
&&
1707 fsp
->fh
->fd
!= -1 &&
1708 fsp
->vuid
== vuid
&&
1709 fsp
->file_pid
== file_pid
&&
1710 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1711 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1712 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1713 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1714 strequal(fsp
->fsp_name
->stream_name
,
1715 smb_fname
->stream_name
)) {
1716 DEBUG(10,("fcb_or_dos_open: file match\n"));
1722 return NT_STATUS_NOT_FOUND
;
1725 /* quite an insane set of semantics ... */
1726 if (is_executable(smb_fname
->base_name
) &&
1727 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1728 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1729 return NT_STATUS_INVALID_PARAMETER
;
1732 /* We need to duplicate this fsp. */
1733 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1734 create_options
, fsp_to_dup_into
);
1737 static void schedule_defer_open(struct share_mode_lock
*lck
,
1738 struct timeval request_time
,
1739 struct smb_request
*req
)
1741 struct deferred_open_record state
;
1743 /* This is a relative time, added to the absolute
1744 request_time value to get the absolute timeout time.
1745 Note that if this is the second or greater time we enter
1746 this codepath for this particular request mid then
1747 request_time is left as the absolute time of the *first*
1748 time this request mid was processed. This is what allows
1749 the request to eventually time out. */
1751 struct timeval timeout
;
1753 /* Normally the smbd we asked should respond within
1754 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1755 * the client did, give twice the timeout as a safety
1756 * measure here in case the other smbd is stuck
1757 * somewhere else. */
1759 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1761 /* Nothing actually uses state.delayed_for_oplocks
1762 but it's handy to differentiate in debug messages
1763 between a 30 second delay due to oplock break, and
1764 a 1 second delay for share mode conflicts. */
1766 state
.delayed_for_oplocks
= True
;
1767 state
.async_open
= false;
1768 state
.id
= lck
->data
->id
;
1770 if (!request_timed_out(request_time
, timeout
)) {
1771 defer_open(lck
, request_time
, timeout
, req
, &state
);
1775 /****************************************************************************
1776 Reschedule an open call that went asynchronous.
1777 ****************************************************************************/
1779 static void schedule_async_open(struct timeval request_time
,
1780 struct smb_request
*req
)
1782 struct deferred_open_record state
;
1783 struct timeval timeout
;
1785 timeout
= timeval_set(20, 0);
1788 state
.delayed_for_oplocks
= false;
1789 state
.async_open
= true;
1791 if (!request_timed_out(request_time
, timeout
)) {
1792 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1796 /****************************************************************************
1797 Work out what access_mask to use from what the client sent us.
1798 ****************************************************************************/
1800 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1801 connection_struct
*conn
,
1802 const struct smb_filename
*smb_fname
,
1804 uint32_t *p_access_mask
)
1806 struct security_descriptor
*sd
;
1807 uint32_t access_granted
;
1810 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1811 *p_access_mask
|= FILE_GENERIC_ALL
;
1812 return NT_STATUS_OK
;
1815 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1821 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1823 * File did not exist
1825 *p_access_mask
= FILE_GENERIC_ALL
;
1826 return NT_STATUS_OK
;
1828 if (!NT_STATUS_IS_OK(status
)) {
1829 DEBUG(10,("Could not get acl on file %s: %s\n",
1830 smb_fname_str_dbg(smb_fname
),
1831 nt_errstr(status
)));
1832 return NT_STATUS_ACCESS_DENIED
;
1836 * If we can access the path to this file, by
1837 * default we have FILE_READ_ATTRIBUTES from the
1838 * containing directory. See the section:
1839 * "Algorithm to Check Access to an Existing File"
1842 * se_file_access_check()
1843 * also takes care of owner WRITE_DAC and READ_CONTROL.
1845 status
= se_file_access_check(sd
,
1846 get_current_nttok(conn
),
1848 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1853 if (!NT_STATUS_IS_OK(status
)) {
1854 DEBUG(10, ("Access denied on file %s: "
1855 "when calculating maximum access\n",
1856 smb_fname_str_dbg(smb_fname
)));
1857 return NT_STATUS_ACCESS_DENIED
;
1859 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1861 if (!(access_granted
& DELETE_ACCESS
)) {
1862 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1863 *p_access_mask
|= DELETE_ACCESS
;
1867 return NT_STATUS_OK
;
1870 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1871 const struct smb_filename
*smb_fname
,
1873 uint32_t access_mask
,
1874 uint32_t *access_mask_out
)
1877 uint32_t orig_access_mask
= access_mask
;
1878 uint32_t rejected_share_access
;
1881 * Convert GENERIC bits to specific bits.
1884 se_map_generic(&access_mask
, &file_generic_mapping
);
1886 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1887 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1889 status
= smbd_calculate_maximum_allowed_access(
1890 conn
, smb_fname
, use_privs
, &access_mask
);
1892 if (!NT_STATUS_IS_OK(status
)) {
1896 access_mask
&= conn
->share_access
;
1899 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1901 if (rejected_share_access
) {
1902 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1903 "file %s: rejected by share access mask[0x%08X] "
1904 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1905 smb_fname_str_dbg(smb_fname
),
1907 orig_access_mask
, access_mask
,
1908 rejected_share_access
));
1909 return NT_STATUS_ACCESS_DENIED
;
1912 *access_mask_out
= access_mask
;
1913 return NT_STATUS_OK
;
1916 /****************************************************************************
1917 Remove the deferred open entry under lock.
1918 ****************************************************************************/
1920 /****************************************************************************
1921 Return true if this is a state pointer to an asynchronous create.
1922 ****************************************************************************/
1924 bool is_deferred_open_async(const void *ptr
)
1926 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1928 return state
->async_open
;
1931 static bool clear_ads(uint32_t create_disposition
)
1935 switch (create_disposition
) {
1936 case FILE_SUPERSEDE
:
1937 case FILE_OVERWRITE_IF
:
1938 case FILE_OVERWRITE
:
1947 static int disposition_to_open_flags(uint32_t create_disposition
)
1952 * Currently we're using FILE_SUPERSEDE as the same as
1953 * FILE_OVERWRITE_IF but they really are
1954 * different. FILE_SUPERSEDE deletes an existing file
1955 * (requiring delete access) then recreates it.
1958 switch (create_disposition
) {
1959 case FILE_SUPERSEDE
:
1960 case FILE_OVERWRITE_IF
:
1962 * If file exists replace/overwrite. If file doesn't
1965 ret
= O_CREAT
|O_TRUNC
;
1970 * If file exists open. If file doesn't exist error.
1975 case FILE_OVERWRITE
:
1977 * If file exists overwrite. If file doesn't exist
1985 * If file exists error. If file doesn't exist create.
1987 ret
= O_CREAT
|O_EXCL
;
1992 * If file exists open. If file doesn't exist create.
2000 static int calculate_open_access_flags(uint32_t access_mask
,
2002 uint32_t private_flags
)
2004 bool need_write
, need_read
;
2007 * Note that we ignore the append flag as append does not
2008 * mean the same thing under DOS and Unix.
2012 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
2013 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
));
2019 /* DENY_DOS opens are always underlying read-write on the
2020 file handle, no matter what the requested access mask
2024 ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
2025 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
2026 FILE_READ_EA
|FILE_EXECUTE
));
2034 /****************************************************************************
2035 Open a file with a share mode. Passed in an already created files_struct *.
2036 ****************************************************************************/
2038 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
2039 struct smb_request
*req
,
2040 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
2041 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
2042 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
2043 uint32 create_options
, /* options such as delete on close. */
2044 uint32 new_dos_attributes
, /* attributes used for new file. */
2045 int oplock_request
, /* internal Samba oplock codes. */
2046 /* Information (FILE_EXISTS etc.) */
2047 uint32_t private_flags
, /* Samba specific flags. */
2051 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
2054 bool file_existed
= VALID_STAT(smb_fname
->st
);
2055 bool def_acl
= False
;
2056 bool posix_open
= False
;
2057 bool new_file_created
= False
;
2058 bool first_open_attempt
= true;
2059 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
2060 mode_t new_unx_mode
= (mode_t
)0;
2061 mode_t unx_mode
= (mode_t
)0;
2063 uint32 existing_dos_attributes
= 0;
2064 struct timeval request_time
= timeval_zero();
2065 struct share_mode_lock
*lck
= NULL
;
2066 uint32 open_access_mask
= access_mask
;
2069 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
2070 struct share_mode_entry
*batch_entry
= NULL
;
2071 struct share_mode_entry
*exclusive_entry
= NULL
;
2072 bool got_level2_oplock
= false;
2073 bool got_a_none_oplock
= false;
2074 struct timespec old_write_time
;
2077 if (conn
->printer
) {
2079 * Printers are handled completely differently.
2080 * Most of the passed parameters are ignored.
2084 *pinfo
= FILE_WAS_CREATED
;
2087 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
2088 smb_fname_str_dbg(smb_fname
)));
2091 DEBUG(0,("open_file_ntcreate: printer open without "
2092 "an SMB request!\n"));
2093 return NT_STATUS_INTERNAL_ERROR
;
2096 return print_spool_open(fsp
, smb_fname
->base_name
,
2100 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
2102 return NT_STATUS_NO_MEMORY
;
2105 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2107 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2108 new_dos_attributes
= 0;
2110 /* Windows allows a new file to be created and
2111 silently removes a FILE_ATTRIBUTE_DIRECTORY
2112 sent by the client. Do the same. */
2114 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
2116 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
2118 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2119 smb_fname
, parent_dir
);
2122 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
2123 "access_mask=0x%x share_access=0x%x "
2124 "create_disposition = 0x%x create_options=0x%x "
2125 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
2126 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
2127 access_mask
, share_access
, create_disposition
,
2128 create_options
, (unsigned int)unx_mode
, oplock_request
,
2129 (unsigned int)private_flags
));
2132 /* Ensure req == NULL means INTERNAL_OPEN_ONLY */
2133 SMB_ASSERT(((oplock_request
& INTERNAL_OPEN_ONLY
) != 0));
2135 /* And req != NULL means no INTERNAL_OPEN_ONLY */
2136 SMB_ASSERT(((oplock_request
& INTERNAL_OPEN_ONLY
) == 0));
2140 * Only non-internal opens can be deferred at all
2145 if (get_deferred_open_message_state(req
,
2148 /* Remember the absolute time of the original
2149 request with this mid. We'll use it later to
2150 see if this has timed out. */
2152 /* If it was an async create retry, the file
2155 if (is_deferred_open_async(ptr
)) {
2156 SET_STAT_INVALID(smb_fname
->st
);
2157 file_existed
= false;
2160 /* Ensure we don't reprocess this message. */
2161 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
2163 first_open_attempt
= false;
2168 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2170 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2174 /* ignore any oplock requests if oplocks are disabled */
2175 if (!lp_oplocks(SNUM(conn
)) ||
2176 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2177 /* Mask off everything except the private Samba bits. */
2178 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2181 /* this is for OS/2 long file names - say we don't support them */
2182 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2183 /* OS/2 Workplace shell fix may be main code stream in a later
2185 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2187 if (use_nt_status()) {
2188 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2190 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2193 switch( create_disposition
) {
2195 /* If file exists open. If file doesn't exist error. */
2196 if (!file_existed
) {
2197 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2198 "requested for file %s and file "
2200 smb_fname_str_dbg(smb_fname
)));
2202 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2206 case FILE_OVERWRITE
:
2207 /* If file exists overwrite. If file doesn't exist
2209 if (!file_existed
) {
2210 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2211 "requested for file %s and file "
2213 smb_fname_str_dbg(smb_fname
) ));
2215 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2220 /* If file exists error. If file doesn't exist
2223 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2224 "requested for file %s and file "
2225 "already exists.\n",
2226 smb_fname_str_dbg(smb_fname
)));
2227 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2232 return map_nt_error_from_unix(errno
);
2236 case FILE_SUPERSEDE
:
2237 case FILE_OVERWRITE_IF
:
2241 return NT_STATUS_INVALID_PARAMETER
;
2244 flags2
= disposition_to_open_flags(create_disposition
);
2246 /* We only care about matching attributes on file exists and
2249 if (!posix_open
&& file_existed
&&
2250 ((create_disposition
== FILE_OVERWRITE
) ||
2251 (create_disposition
== FILE_OVERWRITE_IF
))) {
2252 if (!open_match_attributes(conn
, existing_dos_attributes
,
2254 smb_fname
->st
.st_ex_mode
,
2255 unx_mode
, &new_unx_mode
)) {
2256 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2257 "for file %s (%x %x) (0%o, 0%o)\n",
2258 smb_fname_str_dbg(smb_fname
),
2259 existing_dos_attributes
,
2261 (unsigned int)smb_fname
->st
.st_ex_mode
,
2262 (unsigned int)unx_mode
));
2264 return NT_STATUS_ACCESS_DENIED
;
2268 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2272 if (!NT_STATUS_IS_OK(status
)) {
2273 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2274 "on file %s returned %s\n",
2275 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2279 open_access_mask
= access_mask
;
2281 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2282 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2285 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2286 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2290 * Note that we ignore the append flag as append does not
2291 * mean the same thing under DOS and Unix.
2294 flags
= calculate_open_access_flags(access_mask
, oplock_request
,
2298 * Currently we only look at FILE_WRITE_THROUGH for create options.
2302 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2307 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2311 if (!posix_open
&& !CAN_WRITE(conn
)) {
2313 * We should really return a permission denied error if either
2314 * O_CREAT or O_TRUNC are set, but for compatibility with
2315 * older versions of Samba we just AND them out.
2317 flags2
&= ~(O_CREAT
|O_TRUNC
);
2320 if (first_open_attempt
&& lp_kernel_oplocks(SNUM(conn
))) {
2322 * With kernel oplocks the open breaking an oplock
2323 * blocks until the oplock holder has given up the
2324 * oplock or closed the file. We prevent this by first
2325 * trying to open the file with O_NONBLOCK (see "man
2326 * fcntl" on Linux). For the second try, triggered by
2327 * an oplock break response, we do not need this
2330 * This is true under the assumption that only Samba
2331 * requests kernel oplocks. Once someone else like
2332 * NFSv4 starts to use that API, we will have to
2333 * modify this by communicating with the NFSv4 server.
2335 flags2
|= O_NONBLOCK
;
2339 * Ensure we can't write on a read-only share or file.
2342 if (flags
!= O_RDONLY
&& file_existed
&&
2343 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2344 DEBUG(5,("open_file_ntcreate: write access requested for "
2345 "file %s on read only %s\n",
2346 smb_fname_str_dbg(smb_fname
),
2347 !CAN_WRITE(conn
) ? "share" : "file" ));
2349 return NT_STATUS_ACCESS_DENIED
;
2352 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2353 fsp
->share_access
= share_access
;
2354 fsp
->fh
->private_options
= private_flags
;
2355 fsp
->access_mask
= open_access_mask
; /* We change this to the
2356 * requested access_mask after
2357 * the open is done. */
2358 fsp
->posix_open
= posix_open
;
2360 /* Ensure no SAMBA_PRIVATE bits can be set. */
2361 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2363 if (timeval_is_zero(&request_time
)) {
2364 request_time
= fsp
->open_time
;
2368 * Ensure we pay attention to default ACLs on directories if required.
2371 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2372 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2373 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2376 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2377 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2378 (unsigned int)flags
, (unsigned int)flags2
,
2379 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2380 (unsigned int)open_access_mask
));
2382 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2383 flags
|flags2
, unx_mode
, access_mask
,
2384 open_access_mask
, &new_file_created
);
2386 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_NETWORK_BUSY
)) {
2387 struct deferred_open_record state
;
2390 * EWOULDBLOCK/EAGAIN maps to NETWORK_BUSY.
2392 if (file_existed
&& S_ISFIFO(fsp
->fsp_name
->st
.st_ex_mode
)) {
2393 DEBUG(10, ("FIFO busy\n"));
2394 return NT_STATUS_NETWORK_BUSY
;
2397 DEBUG(10, ("Internal open busy\n"));
2398 return NT_STATUS_NETWORK_BUSY
;
2402 * From here on we assume this is an oplock break triggered
2405 lck
= get_existing_share_mode_lock(talloc_tos(), fsp
->file_id
);
2407 state
.delayed_for_oplocks
= false;
2408 state
.async_open
= false;
2409 state
.id
= fsp
->file_id
;
2410 defer_open(NULL
, request_time
, timeval_set(0, 0),
2412 DEBUG(10, ("No share mode lock found after "
2413 "EWOULDBLOCK, retrying sync\n"));
2414 return NT_STATUS_SHARING_VIOLATION
;
2417 find_oplock_types(fsp
, 0, lck
, &batch_entry
, &exclusive_entry
,
2418 &got_level2_oplock
, &got_a_none_oplock
);
2420 if (delay_for_batch_oplocks(fsp
, req
->mid
, 0, batch_entry
) ||
2421 delay_for_exclusive_oplocks(fsp
, req
->mid
, 0,
2423 schedule_defer_open(lck
, request_time
, req
);
2425 DEBUG(10, ("Sent oplock break request to kernel "
2426 "oplock holder\n"));
2427 return NT_STATUS_SHARING_VIOLATION
;
2431 * No oplock from Samba around. Immediately retry with
2434 state
.delayed_for_oplocks
= false;
2435 state
.async_open
= false;
2436 state
.id
= lck
->data
->id
;
2437 defer_open(lck
, request_time
, timeval_set(0, 0), req
, &state
);
2439 DEBUG(10, ("No Samba oplock around after EWOULDBLOCK. "
2440 "Retrying sync\n"));
2441 return NT_STATUS_SHARING_VIOLATION
;
2444 if (!NT_STATUS_IS_OK(fsp_open
)) {
2445 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2446 schedule_async_open(request_time
, req
);
2452 if (new_file_created
) {
2454 * As we atomically create using O_CREAT|O_EXCL,
2455 * then if new_file_created is true, then
2456 * file_existed *MUST* have been false (even
2457 * if the file was previously detected as being
2460 file_existed
= false;
2463 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2465 * The file did exist, but some other (local or NFS)
2466 * process either renamed/unlinked and re-created the
2467 * file with different dev/ino after we walked the path,
2468 * but before we did the open. We could retry the
2469 * open but it's a rare enough case it's easier to
2470 * just fail the open to prevent creating any problems
2471 * in the open file db having the wrong dev/ino key.
2475 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2476 "Old (dev=0x%llu, ino =0x%llu). "
2477 "New (dev=0x%llu, ino=0x%llu). Failing open "
2478 " with NT_STATUS_ACCESS_DENIED.\n",
2479 smb_fname_str_dbg(smb_fname
),
2480 (unsigned long long)saved_stat
.st_ex_dev
,
2481 (unsigned long long)saved_stat
.st_ex_ino
,
2482 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2483 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2484 return NT_STATUS_ACCESS_DENIED
;
2487 old_write_time
= smb_fname
->st
.st_ex_mtime
;
2490 * Deal with the race condition where two smbd's detect the
2491 * file doesn't exist and do the create at the same time. One
2492 * of them will win and set a share mode, the other (ie. this
2493 * one) should check if the requested share mode for this
2494 * create is allowed.
2498 * Now the file exists and fsp is successfully opened,
2499 * fsp->dev and fsp->inode are valid and should replace the
2500 * dev=0,inode=0 from a non existent file. Spotted by
2501 * Nadav Danieli <nadavd@exanet.com>. JRA.
2506 lck
= get_share_mode_lock(talloc_tos(), id
,
2508 smb_fname
, &old_write_time
);
2511 DEBUG(0, ("open_file_ntcreate: Could not get share "
2512 "mode lock for %s\n",
2513 smb_fname_str_dbg(smb_fname
)));
2515 return NT_STATUS_SHARING_VIOLATION
;
2518 /* Get the types we need to examine. */
2519 find_oplock_types(fsp
,
2525 &got_a_none_oplock
);
2527 /* First pass - send break only on batch oplocks. */
2528 if ((req
!= NULL
) &&
2529 delay_for_batch_oplocks(fsp
,
2533 schedule_defer_open(lck
, request_time
, req
);
2536 return NT_STATUS_SHARING_VIOLATION
;
2539 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2540 access_mask
, share_access
,
2541 create_options
, &file_existed
);
2543 if (NT_STATUS_IS_OK(status
)) {
2544 /* We might be going to allow this open. Check oplock
2546 /* Second pass - send break for both batch or
2547 * exclusive oplocks. */
2548 if ((req
!= NULL
) &&
2549 delay_for_exclusive_oplocks(
2554 schedule_defer_open(lck
, request_time
, req
);
2557 return NT_STATUS_SHARING_VIOLATION
;
2561 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2562 /* DELETE_PENDING is not deferred for a second */
2568 if (!NT_STATUS_IS_OK(status
)) {
2569 uint32 can_access_mask
;
2570 bool can_access
= True
;
2572 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2574 /* Check if this can be done with the deny_dos and fcb
2577 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2578 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2580 DEBUG(0, ("DOS open without an SMB "
2584 return NT_STATUS_INTERNAL_ERROR
;
2587 /* Use the client requested access mask here,
2588 * not the one we open with. */
2589 status
= fcb_or_dos_open(req
,
2600 if (NT_STATUS_IS_OK(status
)) {
2603 *pinfo
= FILE_WAS_OPENED
;
2605 return NT_STATUS_OK
;
2610 * This next line is a subtlety we need for
2611 * MS-Access. If a file open will fail due to share
2612 * permissions and also for security (access) reasons,
2613 * we need to return the access failed error, not the
2614 * share error. We can't open the file due to kernel
2615 * oplock deadlock (it's possible we failed above on
2616 * the open_mode_check()) so use a userspace check.
2619 if (flags
& O_RDWR
) {
2620 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2621 } else if (flags
& O_WRONLY
) {
2622 can_access_mask
= FILE_WRITE_DATA
;
2624 can_access_mask
= FILE_READ_DATA
;
2627 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2628 !CAN_WRITE(conn
)) ||
2629 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2632 can_access_mask
))) {
2637 * If we're returning a share violation, ensure we
2638 * cope with the braindead 1 second delay (SMB1 only).
2641 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2642 !conn
->sconn
->using_smb2
&&
2643 lp_defer_sharing_violations()) {
2644 struct timeval timeout
;
2645 struct deferred_open_record state
;
2648 /* this is a hack to speed up torture tests
2650 timeout_usecs
= lp_parm_int(SNUM(conn
),
2651 "smbd","sharedelay",
2652 SHARING_VIOLATION_USEC_WAIT
);
2654 /* This is a relative time, added to the absolute
2655 request_time value to get the absolute timeout time.
2656 Note that if this is the second or greater time we enter
2657 this codepath for this particular request mid then
2658 request_time is left as the absolute time of the *first*
2659 time this request mid was processed. This is what allows
2660 the request to eventually time out. */
2662 timeout
= timeval_set(0, timeout_usecs
);
2664 /* Nothing actually uses state.delayed_for_oplocks
2665 but it's handy to differentiate in debug messages
2666 between a 30 second delay due to oplock break, and
2667 a 1 second delay for share mode conflicts. */
2669 state
.delayed_for_oplocks
= False
;
2670 state
.async_open
= false;
2674 && !request_timed_out(request_time
,
2676 defer_open(lck
, request_time
, timeout
,
2685 * We have detected a sharing violation here
2686 * so return the correct error code
2688 status
= NT_STATUS_SHARING_VIOLATION
;
2690 status
= NT_STATUS_ACCESS_DENIED
;
2695 /* Should we atomically (to the client at least) truncate ? */
2696 if ((!new_file_created
) &&
2697 (flags2
& O_TRUNC
) &&
2698 (!S_ISFIFO(fsp
->fsp_name
->st
.st_ex_mode
))) {
2701 ret
= vfs_set_filelen(fsp
, 0);
2703 status
= map_nt_error_from_unix(errno
);
2710 grant_fsp_oplock_type(fsp
,
2716 * We have the share entry *locked*.....
2719 /* Delete streams if create_disposition requires it */
2720 if (!new_file_created
&& clear_ads(create_disposition
) &&
2721 !is_ntfs_stream_smb_fname(smb_fname
)) {
2722 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2723 if (!NT_STATUS_IS_OK(status
)) {
2730 /* note that we ignore failure for the following. It is
2731 basically a hack for NFS, and NFS will never set one of
2732 these only read them. Nobody but Samba can ever set a deny
2733 mode and we have already checked our more authoritative
2734 locking database for permission to set this deny mode. If
2735 the kernel refuses the operations then the kernel is wrong.
2736 note that GPFS supports it as well - jmcd */
2738 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2741 * Beware: streams implementing VFS modules may
2742 * implement streams in a way that fsp will have the
2743 * basefile open in the fsp fd, so lacking a distinct
2744 * fd for the stream kernel_flock will apply on the
2745 * basefile which is wrong. The actual check is
2746 * deffered to the VFS module implementing the
2747 * kernel_flock call.
2749 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2750 if(ret_flock
== -1 ){
2755 return NT_STATUS_SHARING_VIOLATION
;
2760 * At this point onwards, we can guarantee that the share entry
2761 * is locked, whether we created the file or not, and that the
2762 * deny mode is compatible with all current opens.
2766 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2767 * but we don't have to store this - just ignore it on access check.
2769 if (conn
->sconn
->using_smb2
) {
2771 * SMB2 doesn't return it (according to Microsoft tests).
2772 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2773 * File created with access = 0x7 (Read, Write, Delete)
2774 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2776 fsp
->access_mask
= access_mask
;
2778 /* But SMB1 does. */
2779 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2783 /* stat opens on existing files don't get oplocks. */
2784 if (is_stat_open(open_access_mask
)) {
2785 fsp
->oplock_type
= NO_OPLOCK
;
2789 if (new_file_created
) {
2790 info
= FILE_WAS_CREATED
;
2792 if (flags2
& O_TRUNC
) {
2793 info
= FILE_WAS_OVERWRITTEN
;
2795 info
= FILE_WAS_OPENED
;
2804 * Setup the oplock info in both the shared memory and
2808 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2809 if (!NT_STATUS_IS_OK(status
)) {
2811 * Could not get the kernel oplock or there are byte-range
2812 * locks on the file.
2814 fsp
->oplock_type
= NO_OPLOCK
;
2817 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2821 /* Handle strange delete on close create semantics. */
2822 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2824 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2826 if (!NT_STATUS_IS_OK(status
)) {
2827 /* Remember to delete the mode we just added. */
2828 del_share_mode(lck
, fsp
);
2833 /* Note that here we set the *inital* delete on close flag,
2834 not the regular one. The magic gets handled in close. */
2835 fsp
->initial_delete_on_close
= True
;
2838 if (info
!= FILE_WAS_OPENED
) {
2839 /* Files should be initially set as archive */
2840 if (lp_map_archive(SNUM(conn
)) ||
2841 lp_store_dos_attributes(SNUM(conn
))) {
2843 if (file_set_dosmode(conn
, smb_fname
,
2844 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2845 parent_dir
, true) == 0) {
2846 unx_mode
= smb_fname
->st
.st_ex_mode
;
2852 /* Determine sparse flag. */
2854 /* POSIX opens are sparse by default. */
2855 fsp
->is_sparse
= true;
2857 fsp
->is_sparse
= (file_existed
&&
2858 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2862 * Take care of inherited ACLs on created files - if default ACL not
2866 if (!posix_open
&& new_file_created
&& !def_acl
) {
2868 int saved_errno
= errno
; /* We might get ENOSYS in the next
2871 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2873 errno
= saved_errno
; /* Ignore ENOSYS */
2876 } else if (new_unx_mode
) {
2880 /* Attributes need changing. File already existed. */
2883 int saved_errno
= errno
; /* We might get ENOSYS in the
2885 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2887 if (ret
== -1 && errno
== ENOSYS
) {
2888 errno
= saved_errno
; /* Ignore ENOSYS */
2890 DEBUG(5, ("open_file_ntcreate: reset "
2891 "attributes of file %s to 0%o\n",
2892 smb_fname_str_dbg(smb_fname
),
2893 (unsigned int)new_unx_mode
));
2894 ret
= 0; /* Don't do the fchmod below. */
2899 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2900 DEBUG(5, ("open_file_ntcreate: failed to reset "
2901 "attributes of file %s to 0%o\n",
2902 smb_fname_str_dbg(smb_fname
),
2903 (unsigned int)new_unx_mode
));
2908 return NT_STATUS_OK
;
2911 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2912 struct smb_filename
*smb_dname
,
2913 uint32 file_attributes
)
2916 char *parent_dir
= NULL
;
2918 bool posix_open
= false;
2919 bool need_re_stat
= false;
2920 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2922 if (!CAN_WRITE(conn
) || (access_mask
& ~(conn
->share_access
))) {
2923 DEBUG(5,("mkdir_internal: failing share access "
2924 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2925 return NT_STATUS_ACCESS_DENIED
;
2928 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2930 return NT_STATUS_NO_MEMORY
;
2933 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2935 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2937 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2940 status
= check_parent_access(conn
,
2943 if(!NT_STATUS_IS_OK(status
)) {
2944 DEBUG(5,("mkdir_internal: check_parent_access "
2945 "on directory %s for path %s returned %s\n",
2947 smb_dname
->base_name
,
2948 nt_errstr(status
) ));
2952 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2953 return map_nt_error_from_unix(errno
);
2956 /* Ensure we're checking for a symlink here.... */
2957 /* We don't want to get caught by a symlink racer. */
2959 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2960 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2961 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2962 return map_nt_error_from_unix(errno
);
2965 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2966 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2967 smb_fname_str_dbg(smb_dname
)));
2968 return NT_STATUS_NOT_A_DIRECTORY
;
2971 if (lp_store_dos_attributes(SNUM(conn
))) {
2973 file_set_dosmode(conn
, smb_dname
,
2974 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2979 if (lp_inherit_perms(SNUM(conn
))) {
2980 inherit_access_posix_acl(conn
, parent_dir
,
2981 smb_dname
->base_name
, mode
);
2982 need_re_stat
= true;
2987 * Check if high bits should have been set,
2988 * then (if bits are missing): add them.
2989 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2992 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2993 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2994 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2995 (smb_dname
->st
.st_ex_mode
|
2996 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2997 need_re_stat
= true;
3001 /* Change the owner if required. */
3002 if (lp_inherit_owner(SNUM(conn
))) {
3003 change_dir_owner_to_parent(conn
, parent_dir
,
3004 smb_dname
->base_name
,
3006 need_re_stat
= true;
3010 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
3011 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
3012 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
3013 return map_nt_error_from_unix(errno
);
3017 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
3018 smb_dname
->base_name
);
3020 return NT_STATUS_OK
;
3023 /****************************************************************************
3024 Open a directory from an NT SMB call.
3025 ****************************************************************************/
3027 static NTSTATUS
open_directory(connection_struct
*conn
,
3028 struct smb_request
*req
,
3029 struct smb_filename
*smb_dname
,
3031 uint32 share_access
,
3032 uint32 create_disposition
,
3033 uint32 create_options
,
3034 uint32 file_attributes
,
3036 files_struct
**result
)
3038 files_struct
*fsp
= NULL
;
3039 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
3040 struct share_mode_lock
*lck
= NULL
;
3042 struct timespec mtimespec
;
3045 if (is_ntfs_stream_smb_fname(smb_dname
)) {
3046 DEBUG(2, ("open_directory: %s is a stream name!\n",
3047 smb_fname_str_dbg(smb_dname
)));
3048 return NT_STATUS_NOT_A_DIRECTORY
;
3051 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
3052 /* Ensure we have a directory attribute. */
3053 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
3056 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
3057 "share_access = 0x%x create_options = 0x%x, "
3058 "create_disposition = 0x%x, file_attributes = 0x%x\n",
3059 smb_fname_str_dbg(smb_dname
),
3060 (unsigned int)access_mask
,
3061 (unsigned int)share_access
,
3062 (unsigned int)create_options
,
3063 (unsigned int)create_disposition
,
3064 (unsigned int)file_attributes
));
3066 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
3067 access_mask
, &access_mask
);
3068 if (!NT_STATUS_IS_OK(status
)) {
3069 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
3070 "on file %s returned %s\n",
3071 smb_fname_str_dbg(smb_dname
),
3072 nt_errstr(status
)));
3076 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3077 !security_token_has_privilege(get_current_nttok(conn
),
3078 SEC_PRIV_SECURITY
)) {
3079 DEBUG(10, ("open_directory: open on %s "
3080 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3081 smb_fname_str_dbg(smb_dname
)));
3082 return NT_STATUS_PRIVILEGE_NOT_HELD
;
3085 switch( create_disposition
) {
3089 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
3092 info
= FILE_WAS_OPENED
;
3097 /* If directory exists error. If directory doesn't
3101 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
3102 DEBUG(2, ("open_directory: unable to create "
3103 "%s. Error was %s\n",
3104 smb_fname_str_dbg(smb_dname
),
3105 nt_errstr(status
)));
3109 status
= mkdir_internal(conn
, smb_dname
,
3112 if (!NT_STATUS_IS_OK(status
)) {
3113 DEBUG(2, ("open_directory: unable to create "
3114 "%s. Error was %s\n",
3115 smb_fname_str_dbg(smb_dname
),
3116 nt_errstr(status
)));
3120 info
= FILE_WAS_CREATED
;
3125 * If directory exists open. If directory doesn't
3130 status
= NT_STATUS_OK
;
3131 info
= FILE_WAS_OPENED
;
3133 status
= mkdir_internal(conn
, smb_dname
,
3136 if (NT_STATUS_IS_OK(status
)) {
3137 info
= FILE_WAS_CREATED
;
3139 /* Cope with create race. */
3140 if (!NT_STATUS_EQUAL(status
,
3141 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3142 DEBUG(2, ("open_directory: unable to create "
3143 "%s. Error was %s\n",
3144 smb_fname_str_dbg(smb_dname
),
3145 nt_errstr(status
)));
3148 info
= FILE_WAS_OPENED
;
3154 case FILE_SUPERSEDE
:
3155 case FILE_OVERWRITE
:
3156 case FILE_OVERWRITE_IF
:
3158 DEBUG(5,("open_directory: invalid create_disposition "
3159 "0x%x for directory %s\n",
3160 (unsigned int)create_disposition
,
3161 smb_fname_str_dbg(smb_dname
)));
3162 return NT_STATUS_INVALID_PARAMETER
;
3165 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3166 DEBUG(5,("open_directory: %s is not a directory !\n",
3167 smb_fname_str_dbg(smb_dname
)));
3168 return NT_STATUS_NOT_A_DIRECTORY
;
3171 if (info
== FILE_WAS_OPENED
) {
3172 status
= smbd_check_access_rights(conn
,
3176 if (!NT_STATUS_IS_OK(status
)) {
3177 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3178 "file %s failed with %s\n",
3179 smb_fname_str_dbg(smb_dname
),
3180 nt_errstr(status
)));
3185 status
= file_new(req
, conn
, &fsp
);
3186 if(!NT_STATUS_IS_OK(status
)) {
3191 * Setup the files_struct for it.
3194 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3195 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3196 fsp
->file_pid
= req
? req
->smbpid
: 0;
3197 fsp
->can_lock
= False
;
3198 fsp
->can_read
= False
;
3199 fsp
->can_write
= False
;
3201 fsp
->share_access
= share_access
;
3202 fsp
->fh
->private_options
= 0;
3204 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3206 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3207 fsp
->print_file
= NULL
;
3208 fsp
->modified
= False
;
3209 fsp
->oplock_type
= NO_OPLOCK
;
3210 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3211 fsp
->is_directory
= True
;
3212 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3213 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3214 if (!NT_STATUS_IS_OK(status
)) {
3215 file_free(req
, fsp
);
3219 /* Don't store old timestamps for directory
3220 handles in the internal database. We don't
3221 update them in there if new objects
3222 are creaded in the directory. Currently
3223 we only update timestamps on file writes.
3226 ZERO_STRUCT(mtimespec
);
3229 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3231 /* POSIX allows us to open a directory with O_RDONLY. */
3232 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3234 if (!NT_STATUS_IS_OK(status
)) {
3235 DEBUG(5, ("open_directory: Could not open fd for "
3237 smb_fname_str_dbg(smb_dname
),
3238 nt_errstr(status
)));
3239 file_free(req
, fsp
);
3243 status
= vfs_stat_fsp(fsp
);
3244 if (!NT_STATUS_IS_OK(status
)) {
3246 file_free(req
, fsp
);
3250 /* Ensure there was no race condition. */
3251 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3252 DEBUG(5,("open_directory: stat struct differs for "
3254 smb_fname_str_dbg(smb_dname
)));
3256 file_free(req
, fsp
);
3257 return NT_STATUS_ACCESS_DENIED
;
3260 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3261 conn
->connectpath
, smb_dname
,
3265 DEBUG(0, ("open_directory: Could not get share mode lock for "
3266 "%s\n", smb_fname_str_dbg(smb_dname
)));
3268 file_free(req
, fsp
);
3269 return NT_STATUS_SHARING_VIOLATION
;
3272 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3273 access_mask
, share_access
,
3274 create_options
, &dir_existed
);
3276 if (!NT_STATUS_IS_OK(status
)) {
3279 file_free(req
, fsp
);
3283 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3284 req
? req
->mid
: 0, NO_OPLOCK
);
3286 /* For directories the delete on close bit at open time seems
3287 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3288 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3289 status
= can_set_delete_on_close(fsp
, 0);
3290 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3293 file_free(req
, fsp
);
3297 if (NT_STATUS_IS_OK(status
)) {
3298 /* Note that here we set the *inital* delete on close flag,
3299 not the regular one. The magic gets handled in close. */
3300 fsp
->initial_delete_on_close
= True
;
3311 return NT_STATUS_OK
;
3314 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3315 struct smb_filename
*smb_dname
)
3320 status
= SMB_VFS_CREATE_FILE(
3323 0, /* root_dir_fid */
3324 smb_dname
, /* fname */
3325 FILE_READ_ATTRIBUTES
, /* access_mask */
3326 FILE_SHARE_NONE
, /* share_access */
3327 FILE_CREATE
, /* create_disposition*/
3328 FILE_DIRECTORY_FILE
, /* create_options */
3329 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3330 0, /* oplock_request */
3331 0, /* allocation_size */
3332 0, /* private_flags */
3338 if (NT_STATUS_IS_OK(status
)) {
3339 close_file(req
, fsp
, NORMAL_CLOSE
);
3345 /****************************************************************************
3346 Receive notification that one of our open files has been renamed by another
3348 ****************************************************************************/
3350 void msg_file_was_renamed(struct messaging_context
*msg
,
3353 struct server_id server_id
,
3357 char *frm
= (char *)data
->data
;
3359 const char *sharepath
;
3360 const char *base_name
;
3361 const char *stream_name
;
3362 struct smb_filename
*smb_fname
= NULL
;
3363 size_t sp_len
, bn_len
;
3365 struct smbd_server_connection
*sconn
=
3366 talloc_get_type_abort(private_data
,
3367 struct smbd_server_connection
);
3369 if (data
->data
== NULL
3370 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3371 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3372 (int)data
->length
));
3376 /* Unpack the message. */
3377 pull_file_id_24(frm
, &id
);
3378 sharepath
= &frm
[24];
3379 sp_len
= strlen(sharepath
);
3380 base_name
= sharepath
+ sp_len
+ 1;
3381 bn_len
= strlen(base_name
);
3382 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3384 /* stream_name must always be NULL if there is no stream. */
3385 if (stream_name
[0] == '\0') {
3389 smb_fname
= synthetic_smb_fname(talloc_tos(), base_name
,
3391 if (smb_fname
== NULL
) {
3395 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3397 sharepath
, smb_fname_str_dbg(smb_fname
),
3398 file_id_string_tos(&id
)));
3400 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3401 fsp
= file_find_di_next(fsp
)) {
3402 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3404 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3405 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3406 smb_fname_str_dbg(smb_fname
)));
3407 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3408 if (!NT_STATUS_IS_OK(status
)) {
3413 /* Now we have the complete path we can work out if this is
3414 actually within this share and adjust newname accordingly. */
3415 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3416 "not sharepath %s) "
3417 "%s from %s -> %s\n",
3418 fsp
->conn
->connectpath
,
3422 smb_fname_str_dbg(smb_fname
)));
3426 TALLOC_FREE(smb_fname
);
3431 * If a main file is opened for delete, all streams need to be checked for
3432 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3433 * If that works, delete them all by setting the delete on close and close.
3436 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3439 struct stream_struct
*stream_info
= NULL
;
3440 files_struct
**streams
= NULL
;
3442 unsigned int num_streams
= 0;
3443 TALLOC_CTX
*frame
= talloc_stackframe();
3446 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3447 &num_streams
, &stream_info
);
3449 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3450 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3451 DEBUG(10, ("no streams around\n"));
3453 return NT_STATUS_OK
;
3456 if (!NT_STATUS_IS_OK(status
)) {
3457 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3458 nt_errstr(status
)));
3462 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3465 if (num_streams
== 0) {
3467 return NT_STATUS_OK
;
3470 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3471 if (streams
== NULL
) {
3472 DEBUG(0, ("talloc failed\n"));
3473 status
= NT_STATUS_NO_MEMORY
;
3477 for (i
=0; i
<num_streams
; i
++) {
3478 struct smb_filename
*smb_fname
;
3480 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3485 smb_fname
= synthetic_smb_fname(
3486 talloc_tos(), fname
, stream_info
[i
].name
, NULL
);
3487 if (smb_fname
== NULL
) {
3488 status
= NT_STATUS_NO_MEMORY
;
3492 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3493 DEBUG(10, ("Unable to stat stream: %s\n",
3494 smb_fname_str_dbg(smb_fname
)));
3497 status
= SMB_VFS_CREATE_FILE(
3500 0, /* root_dir_fid */
3501 smb_fname
, /* fname */
3502 DELETE_ACCESS
, /* access_mask */
3503 (FILE_SHARE_READ
| /* share_access */
3504 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3505 FILE_OPEN
, /* create_disposition*/
3506 0, /* create_options */
3507 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3508 0, /* oplock_request */
3509 0, /* allocation_size */
3510 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3513 &streams
[i
], /* result */
3516 if (!NT_STATUS_IS_OK(status
)) {
3517 DEBUG(10, ("Could not open stream %s: %s\n",
3518 smb_fname_str_dbg(smb_fname
),
3519 nt_errstr(status
)));
3521 TALLOC_FREE(smb_fname
);
3524 TALLOC_FREE(smb_fname
);
3528 * don't touch the variable "status" beyond this point :-)
3531 for (i
-= 1 ; i
>= 0; i
--) {
3532 if (streams
[i
] == NULL
) {
3536 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3537 fsp_str_dbg(streams
[i
])));
3538 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3546 /*********************************************************************
3547 Create a default ACL by inheriting from the parent. If no inheritance
3548 from the parent available, don't set anything. This will leave the actual
3549 permissions the new file or directory already got from the filesystem
3550 as the NT ACL when read.
3551 *********************************************************************/
3553 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3555 TALLOC_CTX
*frame
= talloc_stackframe();
3556 char *parent_name
= NULL
;
3557 struct security_descriptor
*parent_desc
= NULL
;
3558 NTSTATUS status
= NT_STATUS_OK
;
3559 struct security_descriptor
*psd
= NULL
;
3560 const struct dom_sid
*owner_sid
= NULL
;
3561 const struct dom_sid
*group_sid
= NULL
;
3562 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3563 struct security_token
*token
= fsp
->conn
->session_info
->security_token
;
3564 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3565 bool inheritable_components
= false;
3566 bool try_builtin_administrators
= false;
3567 const struct dom_sid
*BA_U_sid
= NULL
;
3568 const struct dom_sid
*BA_G_sid
= NULL
;
3569 bool try_system
= false;
3570 const struct dom_sid
*SY_U_sid
= NULL
;
3571 const struct dom_sid
*SY_G_sid
= NULL
;
3574 if (!parent_dirname(frame
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3576 return NT_STATUS_NO_MEMORY
;
3579 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3581 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3584 if (!NT_STATUS_IS_OK(status
)) {
3589 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3592 if (!inheritable_components
&& !inherit_owner
) {
3594 /* Nothing to inherit and not setting owner. */
3595 return NT_STATUS_OK
;
3598 /* Create an inherited descriptor from the parent. */
3600 if (DEBUGLEVEL
>= 10) {
3601 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3602 fsp_str_dbg(fsp
) ));
3603 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3606 /* Inherit from parent descriptor if "inherit owner" set. */
3607 if (inherit_owner
) {
3608 owner_sid
= parent_desc
->owner_sid
;
3609 group_sid
= parent_desc
->group_sid
;
3612 if (owner_sid
== NULL
) {
3613 if (security_token_has_builtin_administrators(token
)) {
3614 try_builtin_administrators
= true;
3615 } else if (security_token_is_system(token
)) {
3616 try_builtin_administrators
= true;
3621 if (group_sid
== NULL
&&
3622 token
->num_sids
== PRIMARY_GROUP_SID_INDEX
)
3624 if (security_token_is_system(token
)) {
3625 try_builtin_administrators
= true;
3630 if (try_builtin_administrators
) {
3635 ok
= sids_to_unixids(&global_sid_Builtin_Administrators
, 1, &ids
);
3639 BA_U_sid
= &global_sid_Builtin_Administrators
;
3640 BA_G_sid
= &global_sid_Builtin_Administrators
;
3643 BA_U_sid
= &global_sid_Builtin_Administrators
;
3646 BA_G_sid
= &global_sid_Builtin_Administrators
;
3659 ok
= sids_to_unixids(&global_sid_System
, 1, &ids
);
3663 SY_U_sid
= &global_sid_System
;
3664 SY_G_sid
= &global_sid_System
;
3667 SY_U_sid
= &global_sid_System
;
3670 SY_G_sid
= &global_sid_System
;
3678 if (owner_sid
== NULL
) {
3679 owner_sid
= BA_U_sid
;
3682 if (owner_sid
== NULL
) {
3683 owner_sid
= SY_U_sid
;
3686 if (group_sid
== NULL
) {
3687 group_sid
= SY_G_sid
;
3690 if (try_system
&& group_sid
== NULL
) {
3691 group_sid
= BA_G_sid
;
3694 if (owner_sid
== NULL
) {
3695 owner_sid
= &token
->sids
[PRIMARY_USER_SID_INDEX
];
3697 if (group_sid
== NULL
) {
3698 if (token
->num_sids
== PRIMARY_GROUP_SID_INDEX
) {
3699 group_sid
= &token
->sids
[PRIMARY_USER_SID_INDEX
];
3701 group_sid
= &token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3705 status
= se_create_child_secdesc(frame
,
3712 if (!NT_STATUS_IS_OK(status
)) {
3717 /* If inheritable_components == false,
3718 se_create_child_secdesc()
3719 creates a security desriptor with a NULL dacl
3720 entry, but with SEC_DESC_DACL_PRESENT. We need
3721 to remove that flag. */
3723 if (!inheritable_components
) {
3724 security_info_sent
&= ~SECINFO_DACL
;
3725 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3728 if (DEBUGLEVEL
>= 10) {
3729 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3730 fsp_str_dbg(fsp
) ));
3731 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3734 if (inherit_owner
) {
3735 /* We need to be root to force this. */
3738 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3741 if (inherit_owner
) {
3749 * Wrapper around open_file_ntcreate and open_directory
3752 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3753 struct smb_request
*req
,
3754 struct smb_filename
*smb_fname
,
3755 uint32_t access_mask
,
3756 uint32_t share_access
,
3757 uint32_t create_disposition
,
3758 uint32_t create_options
,
3759 uint32_t file_attributes
,
3760 uint32_t oplock_request
,
3761 uint64_t allocation_size
,
3762 uint32_t private_flags
,
3763 struct security_descriptor
*sd
,
3764 struct ea_list
*ea_list
,
3766 files_struct
**result
,
3769 int info
= FILE_WAS_OPENED
;
3770 files_struct
*base_fsp
= NULL
;
3771 files_struct
*fsp
= NULL
;
3774 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3775 "file_attributes = 0x%x, share_access = 0x%x, "
3776 "create_disposition = 0x%x create_options = 0x%x "
3777 "oplock_request = 0x%x private_flags = 0x%x "
3778 "ea_list = 0x%p, sd = 0x%p, "
3780 (unsigned int)access_mask
,
3781 (unsigned int)file_attributes
,
3782 (unsigned int)share_access
,
3783 (unsigned int)create_disposition
,
3784 (unsigned int)create_options
,
3785 (unsigned int)oplock_request
,
3786 (unsigned int)private_flags
,
3787 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3789 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3790 status
= NT_STATUS_NOT_SUPPORTED
;
3794 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3795 status
= NT_STATUS_INVALID_PARAMETER
;
3800 oplock_request
|= INTERNAL_OPEN_ONLY
;
3803 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3804 && (access_mask
& DELETE_ACCESS
)
3805 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3807 * We can't open a file with DELETE access if any of the
3808 * streams is open without FILE_SHARE_DELETE
3810 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3812 if (!NT_STATUS_IS_OK(status
)) {
3817 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3818 !security_token_has_privilege(get_current_nttok(conn
),
3819 SEC_PRIV_SECURITY
)) {
3820 DEBUG(10, ("create_file_unixpath: open on %s "
3821 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3822 smb_fname_str_dbg(smb_fname
)));
3823 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3827 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3828 && is_ntfs_stream_smb_fname(smb_fname
)
3829 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3830 uint32 base_create_disposition
;
3831 struct smb_filename
*smb_fname_base
= NULL
;
3833 if (create_options
& FILE_DIRECTORY_FILE
) {
3834 status
= NT_STATUS_NOT_A_DIRECTORY
;
3838 switch (create_disposition
) {
3840 base_create_disposition
= FILE_OPEN
;
3843 base_create_disposition
= FILE_OPEN_IF
;
3847 /* Create an smb_filename with stream_name == NULL. */
3848 smb_fname_base
= synthetic_smb_fname(talloc_tos(),
3849 smb_fname
->base_name
,
3851 if (smb_fname_base
== NULL
) {
3852 status
= NT_STATUS_NO_MEMORY
;
3856 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3857 DEBUG(10, ("Unable to stat stream: %s\n",
3858 smb_fname_str_dbg(smb_fname_base
)));
3861 * https://bugzilla.samba.org/show_bug.cgi?id=10229
3862 * We need to check if the requested access mask
3863 * could be used to open the underlying file (if
3864 * it existed), as we're passing in zero for the
3865 * access mask to the base filename.
3867 status
= check_base_file_access(conn
,
3871 if (!NT_STATUS_IS_OK(status
)) {
3872 DEBUG(10, ("Permission check "
3873 "for base %s failed: "
3874 "%s\n", smb_fname
->base_name
,
3875 nt_errstr(status
)));
3880 /* Open the base file. */
3881 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3884 | FILE_SHARE_DELETE
,
3885 base_create_disposition
,
3886 0, 0, 0, 0, 0, NULL
, NULL
,
3888 TALLOC_FREE(smb_fname_base
);
3890 if (!NT_STATUS_IS_OK(status
)) {
3891 DEBUG(10, ("create_file_unixpath for base %s failed: "
3892 "%s\n", smb_fname
->base_name
,
3893 nt_errstr(status
)));
3896 /* we don't need to low level fd */
3901 * If it's a request for a directory open, deal with it separately.
3904 if (create_options
& FILE_DIRECTORY_FILE
) {
3906 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3907 status
= NT_STATUS_INVALID_PARAMETER
;
3911 /* Can't open a temp directory. IFS kit test. */
3912 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3913 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3914 status
= NT_STATUS_INVALID_PARAMETER
;
3919 * We will get a create directory here if the Win32
3920 * app specified a security descriptor in the
3921 * CreateDirectory() call.
3925 status
= open_directory(
3926 conn
, req
, smb_fname
, access_mask
, share_access
,
3927 create_disposition
, create_options
, file_attributes
,
3932 * Ordinary file case.
3935 status
= file_new(req
, conn
, &fsp
);
3936 if(!NT_STATUS_IS_OK(status
)) {
3940 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3941 if (!NT_STATUS_IS_OK(status
)) {
3947 * We're opening the stream element of a
3948 * base_fsp we already opened. Set up the
3951 fsp
->base_fsp
= base_fsp
;
3954 if (allocation_size
) {
3955 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3959 status
= open_file_ntcreate(conn
,
3971 if(!NT_STATUS_IS_OK(status
)) {
3972 file_free(req
, fsp
);
3976 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3978 /* A stream open never opens a directory */
3981 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3986 * Fail the open if it was explicitly a non-directory
3990 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3991 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3996 status
= open_directory(
3997 conn
, req
, smb_fname
, access_mask
,
3998 share_access
, create_disposition
,
3999 create_options
, file_attributes
,
4004 if (!NT_STATUS_IS_OK(status
)) {
4008 fsp
->base_fsp
= base_fsp
;
4010 if ((ea_list
!= NULL
) &&
4011 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
4012 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
4013 if (!NT_STATUS_IS_OK(status
)) {
4018 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
4019 status
= NT_STATUS_ACCESS_DENIED
;
4023 /* Save the requested allocation size. */
4024 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
4026 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
4027 fsp
->initial_allocation_size
= smb_roundup(
4028 fsp
->conn
, allocation_size
);
4029 if (fsp
->is_directory
) {
4030 /* Can't set allocation size on a directory. */
4031 status
= NT_STATUS_ACCESS_DENIED
;
4034 if (vfs_allocate_file_space(
4035 fsp
, fsp
->initial_allocation_size
) == -1) {
4036 status
= NT_STATUS_DISK_FULL
;
4040 fsp
->initial_allocation_size
= smb_roundup(
4041 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
4044 fsp
->initial_allocation_size
= 0;
4047 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
4048 fsp
->base_fsp
== NULL
) {
4051 * According to the MS documentation, the only time the security
4052 * descriptor is applied to the opened file is iff we *created* the
4053 * file; an existing file stays the same.
4055 * Also, it seems (from observation) that you can open the file with
4056 * any access mask but you can still write the sd. We need to override
4057 * the granted access before we call set_sd
4058 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
4061 uint32_t sec_info_sent
;
4062 uint32_t saved_access_mask
= fsp
->access_mask
;
4064 sec_info_sent
= get_sec_info(sd
);
4066 fsp
->access_mask
= FILE_GENERIC_ALL
;
4068 if (sec_info_sent
& (SECINFO_OWNER
|
4072 status
= set_sd(fsp
, sd
, sec_info_sent
);
4075 fsp
->access_mask
= saved_access_mask
;
4077 if (!NT_STATUS_IS_OK(status
)) {
4080 } else if (lp_inherit_acls(SNUM(conn
))) {
4081 /* Inherit from parent. Errors here are not fatal. */
4082 status
= inherit_new_acl(fsp
);
4083 if (!NT_STATUS_IS_OK(status
)) {
4084 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
4086 nt_errstr(status
) ));
4091 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
4094 if (pinfo
!= NULL
) {
4098 smb_fname
->st
= fsp
->fsp_name
->st
;
4100 return NT_STATUS_OK
;
4103 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
4106 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
4108 * The close_file below will close
4113 close_file(req
, fsp
, ERROR_CLOSE
);
4116 if (base_fsp
!= NULL
) {
4117 close_file(req
, base_fsp
, ERROR_CLOSE
);
4124 * Calculate the full path name given a relative fid.
4126 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
4127 struct smb_request
*req
,
4128 uint16_t root_dir_fid
,
4129 const struct smb_filename
*smb_fname
,
4130 struct smb_filename
**smb_fname_out
)
4132 files_struct
*dir_fsp
;
4133 char *parent_fname
= NULL
;
4134 char *new_base_name
= NULL
;
4137 if (root_dir_fid
== 0 || !smb_fname
) {
4138 status
= NT_STATUS_INTERNAL_ERROR
;
4142 dir_fsp
= file_fsp(req
, root_dir_fid
);
4144 if (dir_fsp
== NULL
) {
4145 status
= NT_STATUS_INVALID_HANDLE
;
4149 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
4150 status
= NT_STATUS_INVALID_HANDLE
;
4154 if (!dir_fsp
->is_directory
) {
4157 * Check to see if this is a mac fork of some kind.
4160 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
4161 is_ntfs_stream_smb_fname(smb_fname
)) {
4162 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
4167 we need to handle the case when we get a
4168 relative open relative to a file and the
4169 pathname is blank - this is a reopen!
4170 (hint from demyn plantenberg)
4173 status
= NT_STATUS_INVALID_HANDLE
;
4177 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
4179 * We're at the toplevel dir, the final file name
4180 * must not contain ./, as this is filtered out
4181 * normally by srvstr_get_path and unix_convert
4182 * explicitly rejects paths containing ./.
4184 parent_fname
= talloc_strdup(talloc_tos(), "");
4185 if (parent_fname
== NULL
) {
4186 status
= NT_STATUS_NO_MEMORY
;
4190 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
4193 * Copy in the base directory name.
4196 parent_fname
= talloc_array(talloc_tos(), char,
4198 if (parent_fname
== NULL
) {
4199 status
= NT_STATUS_NO_MEMORY
;
4202 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
4206 * Ensure it ends in a '/'.
4207 * We used TALLOC_SIZE +2 to add space for the '/'.
4211 && (parent_fname
[dir_name_len
-1] != '\\')
4212 && (parent_fname
[dir_name_len
-1] != '/')) {
4213 parent_fname
[dir_name_len
] = '/';
4214 parent_fname
[dir_name_len
+1] = '\0';
4218 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
4219 smb_fname
->base_name
);
4220 if (new_base_name
== NULL
) {
4221 status
= NT_STATUS_NO_MEMORY
;
4225 status
= filename_convert(req
,
4227 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
4232 if (!NT_STATUS_IS_OK(status
)) {
4237 TALLOC_FREE(parent_fname
);
4238 TALLOC_FREE(new_base_name
);
4242 NTSTATUS
create_file_default(connection_struct
*conn
,
4243 struct smb_request
*req
,
4244 uint16_t root_dir_fid
,
4245 struct smb_filename
*smb_fname
,
4246 uint32_t access_mask
,
4247 uint32_t share_access
,
4248 uint32_t create_disposition
,
4249 uint32_t create_options
,
4250 uint32_t file_attributes
,
4251 uint32_t oplock_request
,
4252 uint64_t allocation_size
,
4253 uint32_t private_flags
,
4254 struct security_descriptor
*sd
,
4255 struct ea_list
*ea_list
,
4256 files_struct
**result
,
4259 int info
= FILE_WAS_OPENED
;
4260 files_struct
*fsp
= NULL
;
4262 bool stream_name
= false;
4264 DEBUG(10,("create_file: access_mask = 0x%x "
4265 "file_attributes = 0x%x, share_access = 0x%x, "
4266 "create_disposition = 0x%x create_options = 0x%x "
4267 "oplock_request = 0x%x "
4268 "private_flags = 0x%x "
4269 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4271 (unsigned int)access_mask
,
4272 (unsigned int)file_attributes
,
4273 (unsigned int)share_access
,
4274 (unsigned int)create_disposition
,
4275 (unsigned int)create_options
,
4276 (unsigned int)oplock_request
,
4277 (unsigned int)private_flags
,
4278 (unsigned int)root_dir_fid
,
4279 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4282 * Calculate the filename from the root_dir_if if necessary.
4285 if (root_dir_fid
!= 0) {
4286 struct smb_filename
*smb_fname_out
= NULL
;
4287 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4288 smb_fname
, &smb_fname_out
);
4289 if (!NT_STATUS_IS_OK(status
)) {
4292 smb_fname
= smb_fname_out
;
4296 * Check to see if this is a mac fork of some kind.
4299 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4301 enum FAKE_FILE_TYPE fake_file_type
;
4303 fake_file_type
= is_fake_file(smb_fname
);
4305 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4308 * Here we go! support for changing the disk quotas
4311 * We need to fake up to open this MAGIC QUOTA file
4312 * and return a valid FID.
4314 * w2k close this file directly after openening xp
4315 * also tries a QUERY_FILE_INFO on the file and then
4318 status
= open_fake_file(req
, conn
, req
->vuid
,
4319 fake_file_type
, smb_fname
,
4321 if (!NT_STATUS_IS_OK(status
)) {
4325 ZERO_STRUCT(smb_fname
->st
);
4329 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4330 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4335 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4337 smb_fname
->stream_name
= NULL
;
4338 /* We have to handle this error here. */
4339 if (create_options
& FILE_DIRECTORY_FILE
) {
4340 status
= NT_STATUS_NOT_A_DIRECTORY
;
4343 if (lp_posix_pathnames()) {
4344 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4346 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4349 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4350 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4355 status
= create_file_unixpath(
4356 conn
, req
, smb_fname
, access_mask
, share_access
,
4357 create_disposition
, create_options
, file_attributes
,
4358 oplock_request
, allocation_size
, private_flags
,
4362 if (!NT_STATUS_IS_OK(status
)) {
4367 DEBUG(10, ("create_file: info=%d\n", info
));
4370 if (pinfo
!= NULL
) {
4373 return NT_STATUS_OK
;
4376 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4379 close_file(req
, fsp
, ERROR_CLOSE
);