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"
33 extern const struct generic_mapping file_generic_mapping
;
35 struct deferred_open_record
{
36 bool delayed_for_oplocks
;
40 /****************************************************************************
41 SMB1 file varient of se_access_check. Never test FILE_READ_ATTRIBUTES.
42 ****************************************************************************/
44 NTSTATUS
smb1_file_se_access_check(struct connection_struct
*conn
,
45 const struct security_descriptor
*sd
,
46 const struct security_token
*token
,
47 uint32_t access_desired
,
48 uint32_t *access_granted
)
52 if (get_current_uid(conn
) == (uid_t
)0) {
53 /* I'm sorry sir, I didn't know you were root... */
54 *access_granted
= access_desired
;
55 if (access_desired
& SEC_FLAG_MAXIMUM_ALLOWED
) {
56 *access_granted
|= FILE_GENERIC_ALL
;
61 return se_access_check(sd
,
63 (access_desired
& ~FILE_READ_ATTRIBUTES
),
67 /****************************************************************************
68 Check if we have open rights.
69 ****************************************************************************/
71 NTSTATUS
smbd_check_open_rights(struct connection_struct
*conn
,
72 const struct smb_filename
*smb_fname
,
74 uint32_t *access_granted
)
76 /* Check if we have rights to open. */
78 struct security_descriptor
*sd
= NULL
;
79 uint32_t rejected_share_access
;
81 rejected_share_access
= access_mask
& ~(conn
->share_access
);
83 if (rejected_share_access
) {
84 *access_granted
= rejected_share_access
;
85 return NT_STATUS_ACCESS_DENIED
;
88 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
89 *access_granted
= access_mask
;
91 DEBUG(10,("smbd_check_open_rights: not checking ACL "
92 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
93 smb_fname_str_dbg(smb_fname
),
94 (unsigned int)*access_granted
));
98 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
103 if (!NT_STATUS_IS_OK(status
)) {
104 DEBUG(10, ("smbd_check_open_rights: Could not get acl "
106 smb_fname_str_dbg(smb_fname
),
111 status
= smb1_file_se_access_check(conn
,
113 get_current_nttok(conn
),
117 DEBUG(10,("smbd_check_open_rights: file %s requesting "
118 "0x%x returning 0x%x (%s)\n",
119 smb_fname_str_dbg(smb_fname
),
120 (unsigned int)access_mask
,
121 (unsigned int)*access_granted
,
122 nt_errstr(status
) ));
124 if (!NT_STATUS_IS_OK(status
)) {
125 if (DEBUGLEVEL
>= 10) {
126 DEBUG(10,("smbd_check_open_rights: acl for %s is:\n",
127 smb_fname_str_dbg(smb_fname
) ));
128 NDR_PRINT_DEBUG(security_descriptor
, sd
);
137 /****************************************************************************
138 fd support routines - attempt to do a dos_open.
139 ****************************************************************************/
141 static NTSTATUS
fd_open(struct connection_struct
*conn
,
146 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
147 NTSTATUS status
= NT_STATUS_OK
;
151 * Never follow symlinks on a POSIX client. The
152 * client should be doing this.
155 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
160 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
161 if (fsp
->fh
->fd
== -1) {
162 status
= map_nt_error_from_unix(errno
);
163 if (errno
== EMFILE
) {
164 static time_t last_warned
= 0L;
166 if (time((time_t *) NULL
) > last_warned
) {
167 DEBUG(0,("Too many open files, unable "
168 "to open more! smbd's max "
170 lp_max_open_files()));
171 last_warned
= time((time_t *) NULL
);
177 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
178 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
179 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
184 /****************************************************************************
185 Close the file associated with a fsp.
186 ****************************************************************************/
188 NTSTATUS
fd_close(files_struct
*fsp
)
195 if (fsp
->fh
->fd
== -1) {
196 return NT_STATUS_OK
; /* What we used to call a stat open. */
198 if (fsp
->fh
->ref_count
> 1) {
199 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
202 ret
= SMB_VFS_CLOSE(fsp
);
205 return map_nt_error_from_unix(errno
);
210 /****************************************************************************
211 Change the ownership of a file to that of the parent directory.
212 Do this by fd if possible.
213 ****************************************************************************/
215 void change_file_owner_to_parent(connection_struct
*conn
,
216 const char *inherit_from_dir
,
219 struct smb_filename
*smb_fname_parent
= NULL
;
223 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
224 NULL
, NULL
, &smb_fname_parent
);
225 if (!NT_STATUS_IS_OK(status
)) {
229 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
231 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
232 "directory %s. Error was %s\n",
233 smb_fname_str_dbg(smb_fname_parent
),
235 TALLOC_FREE(smb_fname_parent
);
239 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
240 /* Already this uid - no need to change. */
241 DEBUG(10,("change_file_owner_to_parent: file %s "
242 "is already owned by uid %d\n",
244 (int)fsp
->fsp_name
->st
.st_ex_uid
));
245 TALLOC_FREE(smb_fname_parent
);
250 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
253 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
254 "file %s to parent directory uid %u. Error "
255 "was %s\n", fsp_str_dbg(fsp
),
256 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
259 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
260 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
261 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
262 /* Ensure the uid entry is updated. */
263 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
266 TALLOC_FREE(smb_fname_parent
);
269 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
270 const char *inherit_from_dir
,
272 SMB_STRUCT_STAT
*psbuf
)
274 struct smb_filename
*smb_fname_parent
= NULL
;
275 struct smb_filename
*smb_fname_cwd
= NULL
;
276 char *saved_dir
= NULL
;
277 TALLOC_CTX
*ctx
= talloc_tos();
278 NTSTATUS status
= NT_STATUS_OK
;
281 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
283 if (!NT_STATUS_IS_OK(status
)) {
287 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
289 status
= map_nt_error_from_unix(errno
);
290 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
291 "directory %s. Error was %s\n",
292 smb_fname_str_dbg(smb_fname_parent
),
297 /* We've already done an lstat into psbuf, and we know it's a
298 directory. If we can cd into the directory and the dev/ino
299 are the same then we can safely chown without races as
300 we're locking the directory in place by being in it. This
301 should work on any UNIX (thanks tridge :-). JRA.
304 saved_dir
= vfs_GetWd(ctx
,conn
);
306 status
= map_nt_error_from_unix(errno
);
307 DEBUG(0,("change_dir_owner_to_parent: failed to get "
308 "current working directory. Error was %s\n",
313 /* Chdir into the new path. */
314 if (vfs_ChDir(conn
, fname
) == -1) {
315 status
= map_nt_error_from_unix(errno
);
316 DEBUG(0,("change_dir_owner_to_parent: failed to change "
317 "current working directory to %s. Error "
318 "was %s\n", fname
, strerror(errno
) ));
322 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
324 if (!NT_STATUS_IS_OK(status
)) {
328 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
330 status
= map_nt_error_from_unix(errno
);
331 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
332 "directory '.' (%s) Error was %s\n",
333 fname
, strerror(errno
)));
337 /* Ensure we're pointing at the same place. */
338 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
339 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
340 DEBUG(0,("change_dir_owner_to_parent: "
341 "device/inode on directory %s changed. "
342 "Refusing to chown !\n", fname
));
343 status
= NT_STATUS_ACCESS_DENIED
;
347 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
348 /* Already this uid - no need to change. */
349 DEBUG(10,("change_dir_owner_to_parent: directory %s "
350 "is already owned by uid %d\n",
352 (int)smb_fname_cwd
->st
.st_ex_uid
));
353 status
= NT_STATUS_OK
;
358 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
362 status
= map_nt_error_from_unix(errno
);
363 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
364 "directory %s to parent directory uid %u. "
365 "Error was %s\n", fname
,
366 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
369 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
370 "directory %s to parent directory uid %u.\n",
371 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
372 /* Ensure the uid entry is updated. */
373 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
377 vfs_ChDir(conn
,saved_dir
);
379 TALLOC_FREE(smb_fname_parent
);
380 TALLOC_FREE(smb_fname_cwd
);
384 /****************************************************************************
386 ****************************************************************************/
388 static NTSTATUS
open_file(files_struct
*fsp
,
389 connection_struct
*conn
,
390 struct smb_request
*req
,
391 const char *parent_dir
,
394 uint32 access_mask
, /* client requested access mask. */
395 uint32 open_access_mask
) /* what we're actually using in the open. */
397 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
398 NTSTATUS status
= NT_STATUS_OK
;
399 int accmode
= (flags
& O_ACCMODE
);
400 int local_flags
= flags
;
401 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
402 bool file_created
= false;
407 /* Check permissions */
410 * This code was changed after seeing a client open request
411 * containing the open mode of (DENY_WRITE/read-only) with
412 * the 'create if not exist' bit set. The previous code
413 * would fail to open the file read only on a read-only share
414 * as it was checking the flags parameter directly against O_RDONLY,
415 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
419 if (!CAN_WRITE(conn
)) {
420 /* It's a read-only share - fail if we wanted to write. */
421 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
422 DEBUG(3,("Permission denied opening %s\n",
423 smb_fname_str_dbg(smb_fname
)));
424 return NT_STATUS_ACCESS_DENIED
;
425 } else if(flags
& O_CREAT
) {
426 /* We don't want to write - but we must make sure that
427 O_CREAT doesn't create the file if we have write
428 access into the directory.
430 flags
&= ~(O_CREAT
|O_EXCL
);
431 local_flags
&= ~(O_CREAT
|O_EXCL
);
436 * This little piece of insanity is inspired by the
437 * fact that an NT client can open a file for O_RDONLY,
438 * but set the create disposition to FILE_EXISTS_TRUNCATE.
439 * If the client *can* write to the file, then it expects to
440 * truncate the file, even though it is opening for readonly.
441 * Quicken uses this stupid trick in backup file creation...
442 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
443 * for helping track this one down. It didn't bite us in 2.0.x
444 * as we always opened files read-write in that release. JRA.
447 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
448 DEBUG(10,("open_file: truncate requested on read-only open "
449 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
450 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
453 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
454 (!file_existed
&& (local_flags
& O_CREAT
)) ||
455 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
459 * We can't actually truncate here as the file may be locked.
460 * open_file_ntcreate will take care of the truncate later. JRA.
463 local_flags
&= ~O_TRUNC
;
465 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
467 * We would block on opening a FIFO with no one else on the
468 * other end. Do what we used to do and add O_NONBLOCK to the
472 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
473 local_flags
|= O_NONBLOCK
;
477 /* Don't create files with Microsoft wildcard characters. */
480 * wildcard characters are allowed in stream names
481 * only test the basefilename
483 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
485 wild
= smb_fname
->base_name
;
487 if ((local_flags
& O_CREAT
) && !file_existed
&&
489 return NT_STATUS_OBJECT_NAME_INVALID
;
492 /* Actually do the open */
493 status
= fd_open(conn
, fsp
, local_flags
, unx_mode
);
494 if (!NT_STATUS_IS_OK(status
)) {
495 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
496 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
497 nt_errstr(status
),local_flags
,flags
));
501 if ((local_flags
& O_CREAT
) && !file_existed
) {
506 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
508 uint32_t access_granted
= 0;
510 status
= smbd_check_open_rights(conn
,
514 if (!NT_STATUS_IS_OK(status
)) {
515 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
517 * On NT_STATUS_ACCESS_DENIED, access_granted
518 * contains the denied bits.
521 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
522 (access_granted
& FILE_WRITE_ATTRIBUTES
) &&
523 (lp_map_readonly(SNUM(conn
)) ||
524 lp_map_archive(SNUM(conn
)) ||
525 lp_map_hidden(SNUM(conn
)) ||
526 lp_map_system(SNUM(conn
)))) {
527 access_granted
&= ~FILE_WRITE_ATTRIBUTES
;
529 DEBUG(10,("open_file: "
538 if ((access_mask
& DELETE_ACCESS
) &&
539 (access_granted
& DELETE_ACCESS
) &&
540 can_delete_file_in_directory(conn
,
542 /* Were we trying to do a stat open
543 * for delete and didn't get DELETE
544 * access (only) ? Check if the
545 * directory allows DELETE_CHILD.
547 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
550 access_granted
&= ~DELETE_ACCESS
;
552 DEBUG(10,("open_file: "
560 if (access_granted
!= 0) {
561 DEBUG(10,("open_file: Access "
568 } else if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
570 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
571 /* This is a POSIX stat open for delete
572 * or rename on a symlink that points
574 DEBUG(10,("open_file: allowing POSIX "
575 "open on bad symlink %s\n",
579 DEBUG(10,("open_file: "
580 "smbd_check_open_rights on file "
582 smb_fname_str_dbg(smb_fname
),
583 nt_errstr(status
) ));
593 if (fsp
->fh
->fd
== -1) {
594 ret
= SMB_VFS_STAT(conn
, smb_fname
);
596 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
597 /* If we have an fd, this stat should succeed. */
599 DEBUG(0,("Error doing fstat on open file %s "
601 smb_fname_str_dbg(smb_fname
),
606 /* For a non-io open, this stat failing means file not found. JRA */
608 status
= map_nt_error_from_unix(errno
);
614 bool need_re_stat
= false;
615 /* Do all inheritance work after we've
616 done a successful stat call and filled
617 in the stat struct in fsp->fsp_name. */
619 /* Inherit the ACL if required */
620 if (lp_inherit_perms(SNUM(conn
))) {
621 inherit_access_posix_acl(conn
, parent_dir
,
622 smb_fname
->base_name
,
627 /* Change the owner if required. */
628 if (lp_inherit_owner(SNUM(conn
))) {
629 change_file_owner_to_parent(conn
, parent_dir
,
635 if (fsp
->fh
->fd
== -1) {
636 ret
= SMB_VFS_STAT(conn
, smb_fname
);
638 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
639 /* If we have an fd, this stat should succeed. */
641 DEBUG(0,("Error doing fstat on open file %s "
643 smb_fname_str_dbg(smb_fname
),
649 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
650 FILE_NOTIFY_CHANGE_FILE_NAME
,
651 smb_fname
->base_name
);
656 * POSIX allows read-only opens of directories. We don't
657 * want to do this (we use a different code path for this)
658 * so catch a directory open and return an EISDIR. JRA.
661 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
664 return NT_STATUS_FILE_IS_A_DIRECTORY
;
667 fsp
->mode
= smb_fname
->st
.st_ex_mode
;
668 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
669 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
670 fsp
->file_pid
= req
? req
->smbpid
: 0;
671 fsp
->can_lock
= True
;
672 fsp
->can_read
= (access_mask
& (FILE_READ_DATA
)) ? True
: False
;
673 if (!CAN_WRITE(conn
)) {
674 fsp
->can_write
= False
;
676 fsp
->can_write
= (access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ?
679 fsp
->print_file
= NULL
;
680 fsp
->modified
= False
;
681 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
682 fsp
->is_directory
= False
;
683 if (conn
->aio_write_behind_list
&&
684 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
685 conn
->case_sensitive
)) {
686 fsp
->aio_write_behind
= True
;
689 fsp
->wcp
= NULL
; /* Write cache pointer. */
691 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
692 conn
->session_info
->unix_info
->unix_name
,
693 smb_fname_str_dbg(smb_fname
),
694 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
695 conn
->num_files_open
));
701 /****************************************************************************
702 Check if we can open a file with a share mode.
703 Returns True if conflict, False if not.
704 ****************************************************************************/
706 static bool share_conflict(struct share_mode_entry
*entry
,
710 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
711 "entry->share_access = 0x%x, "
712 "entry->private_options = 0x%x\n",
713 (unsigned int)entry
->access_mask
,
714 (unsigned int)entry
->share_access
,
715 (unsigned int)entry
->private_options
));
717 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
718 (unsigned int)access_mask
, (unsigned int)share_access
));
720 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
724 DELETE_ACCESS
)) == 0) {
725 DEBUG(10,("share_conflict: No conflict due to "
726 "entry->access_mask = 0x%x\n",
727 (unsigned int)entry
->access_mask
));
731 if ((access_mask
& (FILE_WRITE_DATA
|
735 DELETE_ACCESS
)) == 0) {
736 DEBUG(10,("share_conflict: No conflict due to "
737 "access_mask = 0x%x\n",
738 (unsigned int)access_mask
));
742 #if 1 /* JRA TEST - Superdebug. */
743 #define CHECK_MASK(num, am, right, sa, share) \
744 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
745 (unsigned int)(num), (unsigned int)(am), \
746 (unsigned int)(right), (unsigned int)(am)&(right) )); \
747 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
748 (unsigned int)(num), (unsigned int)(sa), \
749 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
750 if (((am) & (right)) && !((sa) & (share))) { \
751 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
752 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
753 (unsigned int)(share) )); \
757 #define CHECK_MASK(num, am, right, sa, share) \
758 if (((am) & (right)) && !((sa) & (share))) { \
759 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
760 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
761 (unsigned int)(share) )); \
766 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
767 share_access
, FILE_SHARE_WRITE
);
768 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
769 entry
->share_access
, FILE_SHARE_WRITE
);
771 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
772 share_access
, FILE_SHARE_READ
);
773 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
774 entry
->share_access
, FILE_SHARE_READ
);
776 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
777 share_access
, FILE_SHARE_DELETE
);
778 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
779 entry
->share_access
, FILE_SHARE_DELETE
);
781 DEBUG(10,("share_conflict: No conflict.\n"));
785 #if defined(DEVELOPER)
786 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
788 struct share_mode_entry
*share_entry
)
792 if (!procid_is_me(&share_entry
->pid
)) {
796 if (is_deferred_open_entry(share_entry
) &&
797 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
798 char *str
= talloc_asprintf(talloc_tos(),
799 "Got a deferred entry without a request: "
801 share_mode_str(talloc_tos(), num
, share_entry
));
805 if (!is_valid_share_mode_entry(share_entry
)) {
809 fsp
= file_find_dif(sconn
, share_entry
->id
,
810 share_entry
->share_file_id
);
812 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
813 share_mode_str(talloc_tos(), num
, share_entry
) ));
814 smb_panic("validate_my_share_entries: Cannot match a "
815 "share entry with an open file\n");
818 if (is_deferred_open_entry(share_entry
) ||
819 is_unused_share_mode_entry(share_entry
)) {
823 if ((share_entry
->op_type
== NO_OPLOCK
) &&
824 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
825 /* Someone has already written to it, but I haven't yet
830 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
839 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
840 share_mode_str(talloc_tos(), num
, share_entry
) ));
841 str
= talloc_asprintf(talloc_tos(),
842 "validate_my_share_entries: "
843 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
844 fsp
->fsp_name
->base_name
,
845 (unsigned int)fsp
->oplock_type
,
846 (unsigned int)share_entry
->op_type
);
852 bool is_stat_open(uint32 access_mask
)
854 return (access_mask
&&
855 ((access_mask
& ~(SYNCHRONIZE_ACCESS
| FILE_READ_ATTRIBUTES
|
856 FILE_WRITE_ATTRIBUTES
))==0) &&
857 ((access_mask
& (SYNCHRONIZE_ACCESS
|FILE_READ_ATTRIBUTES
|
858 FILE_WRITE_ATTRIBUTES
)) != 0));
861 /****************************************************************************
862 Deal with share modes
863 Invarient: Share mode must be locked on entry and exit.
864 Returns -1 on error, or number of share modes on success (may be zero).
865 ****************************************************************************/
867 static NTSTATUS
open_mode_check(connection_struct
*conn
,
868 struct share_mode_lock
*lck
,
872 uint32 create_options
,
877 if(lck
->num_share_modes
== 0) {
881 *file_existed
= True
;
883 /* A delete on close prohibits everything */
885 if (is_delete_on_close_set(lck
, name_hash
)) {
886 return NT_STATUS_DELETE_PENDING
;
889 if (is_stat_open(access_mask
)) {
890 /* Stat open that doesn't trigger oplock breaks or share mode
891 * checks... ! JRA. */
896 * Check if the share modes will give us access.
899 #if defined(DEVELOPER)
900 for(i
= 0; i
< lck
->num_share_modes
; i
++) {
901 validate_my_share_entries(conn
->sconn
, i
,
902 &lck
->share_modes
[i
]);
906 if (!lp_share_modes(SNUM(conn
))) {
910 /* Now we check the share modes, after any oplock breaks. */
911 for(i
= 0; i
< lck
->num_share_modes
; i
++) {
913 if (!is_valid_share_mode_entry(&lck
->share_modes
[i
])) {
917 /* someone else has a share lock on it, check to see if we can
919 if (share_conflict(&lck
->share_modes
[i
],
920 access_mask
, share_access
)) {
921 return NT_STATUS_SHARING_VIOLATION
;
928 static bool is_delete_request(files_struct
*fsp
) {
929 return ((fsp
->access_mask
== DELETE_ACCESS
) &&
930 (fsp
->oplock_type
== NO_OPLOCK
));
934 * Send a break message to the oplock holder and delay the open for
938 static NTSTATUS
send_break_message(files_struct
*fsp
,
939 struct share_mode_entry
*exclusive
,
944 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
946 DEBUG(10, ("Sending break request to PID %s\n",
947 procid_str_static(&exclusive
->pid
)));
948 exclusive
->op_mid
= mid
;
950 /* Create the message. */
951 share_mode_entry_to_message(msg
, exclusive
);
953 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
954 don't want this set in the share mode struct pointed to by lck. */
956 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
957 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
958 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
961 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
962 MSG_SMB_BREAK_REQUEST
,
964 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
965 if (!NT_STATUS_IS_OK(status
)) {
966 DEBUG(3, ("Could not send oplock break message: %s\n",
974 * Return share_mode_entry pointers for :
975 * 1). Batch oplock entry.
976 * 2). Batch or exclusive oplock entry (may be identical to #1).
977 * bool have_level2_oplock
978 * bool have_no_oplock.
979 * Do internal consistency checks on the share mode for a file.
982 static void find_oplock_types(files_struct
*fsp
,
984 struct share_mode_lock
*lck
,
985 struct share_mode_entry
**pp_batch
,
986 struct share_mode_entry
**pp_ex_or_batch
,
993 *pp_ex_or_batch
= NULL
;
995 *got_no_oplock
= false;
997 /* Ignore stat or internal opens, as is done in
998 delay_for_batch_oplocks() and
999 delay_for_exclusive_oplocks().
1001 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1005 for (i
=0; i
<lck
->num_share_modes
; i
++) {
1006 if (!is_valid_share_mode_entry(&lck
->share_modes
[i
])) {
1010 if (lck
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1011 is_stat_open(lck
->share_modes
[i
].access_mask
)) {
1012 /* We ignore stat opens in the table - they
1013 always have NO_OPLOCK and never get or
1014 cause breaks. JRA. */
1018 if (BATCH_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
1019 /* batch - can only be one. */
1020 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1021 smb_panic("Bad batch oplock entry.");
1023 *pp_batch
= &lck
->share_modes
[i
];
1026 if (EXCLUSIVE_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
1027 /* Exclusive or batch - can only be one. */
1028 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1029 smb_panic("Bad exclusive or batch oplock entry.");
1031 *pp_ex_or_batch
= &lck
->share_modes
[i
];
1034 if (LEVEL_II_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
1035 if (*pp_batch
|| *pp_ex_or_batch
) {
1036 smb_panic("Bad levelII oplock entry.");
1041 if (lck
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1042 if (*pp_batch
|| *pp_ex_or_batch
) {
1043 smb_panic("Bad no oplock entry.");
1045 *got_no_oplock
= true;
1050 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1053 struct share_mode_entry
*batch_entry
)
1055 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1059 if (batch_entry
!= NULL
) {
1060 /* Found a batch oplock */
1061 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1067 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1070 struct share_mode_entry
*ex_entry
)
1072 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1076 if (ex_entry
!= NULL
) {
1077 /* Found an exclusive or batch oplock */
1078 bool delay_it
= is_delete_request(fsp
) ?
1079 BATCH_OPLOCK_TYPE(ex_entry
->op_type
) : true;
1081 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1088 static void grant_fsp_oplock_type(files_struct
*fsp
,
1089 const struct byte_range_lock
*br_lck
,
1091 bool got_level2_oplock
,
1092 bool got_a_none_oplock
)
1094 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1095 lp_level2_oplocks(SNUM(fsp
->conn
));
1097 /* Start by granting what the client asked for,
1098 but ensure no SAMBA_PRIVATE bits can be set. */
1099 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1101 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1102 /* No oplocks on internal open. */
1103 fsp
->oplock_type
= NO_OPLOCK
;
1104 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1105 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1107 } else if (br_lck
&& br_lck
->num_locks
> 0) {
1108 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1110 fsp
->oplock_type
= NO_OPLOCK
;
1113 if (is_stat_open(fsp
->access_mask
)) {
1114 /* Leave the value already set. */
1115 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1116 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1121 * Match what was requested (fsp->oplock_type) with
1122 * what was found in the existing share modes.
1125 if (got_a_none_oplock
) {
1126 fsp
->oplock_type
= NO_OPLOCK
;
1127 } else if (got_level2_oplock
) {
1128 if (fsp
->oplock_type
== NO_OPLOCK
||
1129 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1130 /* Store a level2 oplock, but don't tell the client */
1131 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1133 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1136 /* All share_mode_entries are placeholders or deferred.
1137 * Silently upgrade to fake levelII if the client didn't
1138 * ask for an oplock. */
1139 if (fsp
->oplock_type
== NO_OPLOCK
) {
1140 /* Store a level2 oplock, but don't tell the client */
1141 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1146 * Don't grant level2 to clients that don't want them
1147 * or if we've turned them off.
1149 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1150 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1153 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1154 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1157 bool request_timed_out(struct timeval request_time
,
1158 struct timeval timeout
)
1160 struct timeval now
, end_time
;
1162 end_time
= timeval_sum(&request_time
, &timeout
);
1163 return (timeval_compare(&end_time
, &now
) < 0);
1166 /****************************************************************************
1167 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1168 ****************************************************************************/
1170 static void defer_open(struct share_mode_lock
*lck
,
1171 struct timeval request_time
,
1172 struct timeval timeout
,
1173 struct smb_request
*req
,
1174 struct deferred_open_record
*state
)
1178 /* Paranoia check */
1180 for (i
=0; i
<lck
->num_share_modes
; i
++) {
1181 struct share_mode_entry
*e
= &lck
->share_modes
[i
];
1183 if (!is_deferred_open_entry(e
)) {
1187 if (procid_is_me(&e
->pid
) && (e
->op_mid
== req
->mid
)) {
1188 DEBUG(0, ("Trying to defer an already deferred "
1189 "request: mid=%llu, exiting\n",
1190 (unsigned long long)req
->mid
));
1191 exit_server("attempt to defer a deferred request");
1195 /* End paranoia check */
1197 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1198 "open entry for mid %llu\n",
1199 (unsigned int)request_time
.tv_sec
,
1200 (unsigned int)request_time
.tv_usec
,
1201 (unsigned long long)req
->mid
));
1203 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1204 state
->id
, (char *)state
, sizeof(*state
))) {
1205 exit_server("push_deferred_open_message_smb failed");
1207 add_deferred_open(lck
, req
->mid
, request_time
,
1208 sconn_server_id(req
->sconn
), state
->id
);
1212 /****************************************************************************
1213 On overwrite open ensure that the attributes match.
1214 ****************************************************************************/
1216 bool open_match_attributes(connection_struct
*conn
,
1217 uint32 old_dos_attr
,
1218 uint32 new_dos_attr
,
1219 mode_t existing_unx_mode
,
1220 mode_t new_unx_mode
,
1221 mode_t
*returned_unx_mode
)
1223 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1225 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1226 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1228 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1229 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1230 *returned_unx_mode
= new_unx_mode
;
1232 *returned_unx_mode
= (mode_t
)0;
1235 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1236 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1237 "returned_unx_mode = 0%o\n",
1238 (unsigned int)old_dos_attr
,
1239 (unsigned int)existing_unx_mode
,
1240 (unsigned int)new_dos_attr
,
1241 (unsigned int)*returned_unx_mode
));
1243 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1244 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1245 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1246 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1250 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1251 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1252 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1259 /****************************************************************************
1260 Special FCB or DOS processing in the case of a sharing violation.
1261 Try and find a duplicated file handle.
1262 ****************************************************************************/
1264 NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1265 connection_struct
*conn
,
1266 files_struct
*fsp_to_dup_into
,
1267 const struct smb_filename
*smb_fname
,
1272 uint32 share_access
,
1273 uint32 create_options
)
1277 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1278 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1280 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1281 fsp
= file_find_di_next(fsp
)) {
1283 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1284 "vuid = %u, file_pid = %u, private_options = 0x%x "
1285 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1286 fsp
->fh
->fd
, (unsigned int)fsp
->vuid
,
1287 (unsigned int)fsp
->file_pid
,
1288 (unsigned int)fsp
->fh
->private_options
,
1289 (unsigned int)fsp
->access_mask
));
1291 if (fsp
->fh
->fd
!= -1 &&
1292 fsp
->vuid
== vuid
&&
1293 fsp
->file_pid
== file_pid
&&
1294 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1295 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1296 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1297 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1298 strequal(fsp
->fsp_name
->stream_name
,
1299 smb_fname
->stream_name
)) {
1300 DEBUG(10,("fcb_or_dos_open: file match\n"));
1306 return NT_STATUS_NOT_FOUND
;
1309 /* quite an insane set of semantics ... */
1310 if (is_executable(smb_fname
->base_name
) &&
1311 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1312 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1313 return NT_STATUS_INVALID_PARAMETER
;
1316 /* We need to duplicate this fsp. */
1317 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1318 create_options
, fsp_to_dup_into
);
1321 static void schedule_defer_open(struct share_mode_lock
*lck
,
1322 struct timeval request_time
,
1323 struct smb_request
*req
)
1325 struct deferred_open_record state
;
1327 /* This is a relative time, added to the absolute
1328 request_time value to get the absolute timeout time.
1329 Note that if this is the second or greater time we enter
1330 this codepath for this particular request mid then
1331 request_time is left as the absolute time of the *first*
1332 time this request mid was processed. This is what allows
1333 the request to eventually time out. */
1335 struct timeval timeout
;
1337 /* Normally the smbd we asked should respond within
1338 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1339 * the client did, give twice the timeout as a safety
1340 * measure here in case the other smbd is stuck
1341 * somewhere else. */
1343 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1345 /* Nothing actually uses state.delayed_for_oplocks
1346 but it's handy to differentiate in debug messages
1347 between a 30 second delay due to oplock break, and
1348 a 1 second delay for share mode conflicts. */
1350 state
.delayed_for_oplocks
= True
;
1353 if (!request_timed_out(request_time
, timeout
)) {
1354 defer_open(lck
, request_time
, timeout
, req
, &state
);
1358 /****************************************************************************
1359 Work out what access_mask to use from what the client sent us.
1360 ****************************************************************************/
1362 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1363 const struct smb_filename
*smb_fname
,
1365 uint32_t access_mask
,
1366 uint32_t *access_mask_out
)
1369 uint32_t orig_access_mask
= access_mask
;
1370 uint32_t rejected_share_access
;
1373 * Convert GENERIC bits to specific bits.
1376 se_map_generic(&access_mask
, &file_generic_mapping
);
1378 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1379 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1382 struct security_descriptor
*sd
;
1383 uint32_t access_granted
= 0;
1385 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1390 if (!NT_STATUS_IS_OK(status
)) {
1391 DEBUG(10,("smbd_calculate_access_mask: "
1392 "Could not get acl on file %s: %s\n",
1393 smb_fname_str_dbg(smb_fname
),
1394 nt_errstr(status
)));
1395 return NT_STATUS_ACCESS_DENIED
;
1398 status
= smb1_file_se_access_check(conn
,
1400 get_current_nttok(conn
),
1406 if (!NT_STATUS_IS_OK(status
)) {
1407 DEBUG(10, ("smbd_calculate_access_mask: "
1408 "Access denied on file %s: "
1409 "when calculating maximum access\n",
1410 smb_fname_str_dbg(smb_fname
)));
1411 return NT_STATUS_ACCESS_DENIED
;
1414 access_mask
= access_granted
;
1416 access_mask
= FILE_GENERIC_ALL
;
1419 access_mask
&= conn
->share_access
;
1422 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1424 if (rejected_share_access
) {
1425 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1426 "file %s: rejected by share access mask[0x%08X] "
1427 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1428 smb_fname_str_dbg(smb_fname
),
1430 orig_access_mask
, access_mask
,
1431 rejected_share_access
));
1432 return NT_STATUS_ACCESS_DENIED
;
1435 *access_mask_out
= access_mask
;
1436 return NT_STATUS_OK
;
1439 /****************************************************************************
1440 Remove the deferred open entry under lock.
1441 ****************************************************************************/
1443 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1444 struct server_id pid
)
1446 struct share_mode_lock
*lck
= get_share_mode_lock(talloc_tos(), id
,
1449 DEBUG(0, ("could not get share mode lock\n"));
1451 del_deferred_open_entry(lck
, mid
, pid
);
1456 /****************************************************************
1457 Ensure we get the brlock lock followed by the share mode lock
1458 in the correct order to prevent deadlocks if other smbd's are
1459 using the brlock database on this file simultaneously with this open
1460 (that code also gets the locks in brlock -> share mode lock order).
1461 ****************************************************************/
1463 static bool acquire_ordered_locks(TALLOC_CTX
*mem_ctx
,
1465 const struct file_id id
,
1466 const char *connectpath
,
1467 const struct smb_filename
*smb_fname
,
1468 const struct timespec
*p_old_write_time
,
1469 struct share_mode_lock
**p_lck
,
1470 struct byte_range_lock
**p_br_lck
)
1472 /* Ordering - we must get the br_lck for this
1473 file before the share mode. */
1474 if (lp_locking(fsp
->conn
->params
)) {
1475 *p_br_lck
= brl_get_locks_readonly(fsp
);
1476 if (*p_br_lck
== NULL
) {
1477 DEBUG(0, ("Could not get br_lock\n"));
1480 /* Note - we don't need to free the returned
1481 br_lck explicitly as it was allocated on talloc_tos()
1482 and so will be autofreed (and release the lock)
1483 once the frame context disappears.
1485 If it was set to fsp->brlock_rec then it was
1486 talloc_move'd to hang off the fsp pointer and
1487 in this case is guarenteed to not be holding the
1488 lock on the brlock database. */
1491 *p_lck
= get_share_mode_lock(mem_ctx
,
1497 if (*p_lck
== NULL
) {
1498 DEBUG(0, ("Could not get share mode lock\n"));
1499 TALLOC_FREE(*p_br_lck
);
1505 /****************************************************************************
1506 Open a file with a share mode. Passed in an already created files_struct *.
1507 ****************************************************************************/
1509 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1510 struct smb_request
*req
,
1511 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1512 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1513 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1514 uint32 create_options
, /* options such as delete on close. */
1515 uint32 new_dos_attributes
, /* attributes used for new file. */
1516 int oplock_request
, /* internal Samba oplock codes. */
1517 /* Information (FILE_EXISTS etc.) */
1518 uint32_t private_flags
, /* Samba specific flags. */
1522 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1525 bool file_existed
= VALID_STAT(smb_fname
->st
);
1526 bool def_acl
= False
;
1527 bool posix_open
= False
;
1528 bool new_file_created
= False
;
1529 bool clear_ads
= false;
1531 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1532 mode_t new_unx_mode
= (mode_t
)0;
1533 mode_t unx_mode
= (mode_t
)0;
1535 uint32 existing_dos_attributes
= 0;
1536 struct timeval request_time
= timeval_zero();
1537 struct share_mode_lock
*lck
= NULL
;
1538 uint32 open_access_mask
= access_mask
;
1544 if (conn
->printer
) {
1546 * Printers are handled completely differently.
1547 * Most of the passed parameters are ignored.
1551 *pinfo
= FILE_WAS_CREATED
;
1554 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1555 smb_fname_str_dbg(smb_fname
)));
1558 DEBUG(0,("open_file_ntcreate: printer open without "
1559 "an SMB request!\n"));
1560 return NT_STATUS_INTERNAL_ERROR
;
1563 return print_spool_open(fsp
, smb_fname
->base_name
,
1567 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1569 return NT_STATUS_NO_MEMORY
;
1572 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1574 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1575 new_dos_attributes
= 0;
1577 /* Windows allows a new file to be created and
1578 silently removes a FILE_ATTRIBUTE_DIRECTORY
1579 sent by the client. Do the same. */
1581 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1583 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1585 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1586 smb_fname
, parent_dir
);
1589 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1590 "access_mask=0x%x share_access=0x%x "
1591 "create_disposition = 0x%x create_options=0x%x "
1592 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1593 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1594 access_mask
, share_access
, create_disposition
,
1595 create_options
, (unsigned int)unx_mode
, oplock_request
,
1596 (unsigned int)private_flags
));
1598 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1599 DEBUG(0, ("No smb request but not an internal only open!\n"));
1600 return NT_STATUS_INTERNAL_ERROR
;
1604 * Only non-internal opens can be deferred at all
1609 if (get_deferred_open_message_state(req
,
1613 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1614 /* Remember the absolute time of the original
1615 request with this mid. We'll use it later to
1616 see if this has timed out. */
1618 /* Remove the deferred open entry under lock. */
1619 remove_deferred_open_entry(
1620 state
->id
, req
->mid
,
1621 sconn_server_id(req
->sconn
));
1623 /* Ensure we don't reprocess this message. */
1624 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
1628 status
= check_name(conn
, smb_fname
->base_name
);
1629 if (!NT_STATUS_IS_OK(status
)) {
1634 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
1636 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
1640 /* ignore any oplock requests if oplocks are disabled */
1641 if (!lp_oplocks(SNUM(conn
)) ||
1642 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
1643 /* Mask off everything except the private Samba bits. */
1644 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
1647 /* this is for OS/2 long file names - say we don't support them */
1648 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
1649 /* OS/2 Workplace shell fix may be main code stream in a later
1651 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1653 if (use_nt_status()) {
1654 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1656 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
1659 switch( create_disposition
) {
1661 * Currently we're using FILE_SUPERSEDE as the same as
1662 * FILE_OVERWRITE_IF but they really are
1663 * different. FILE_SUPERSEDE deletes an existing file
1664 * (requiring delete access) then recreates it.
1666 case FILE_SUPERSEDE
:
1667 /* If file exists replace/overwrite. If file doesn't
1669 flags2
|= (O_CREAT
| O_TRUNC
);
1673 case FILE_OVERWRITE_IF
:
1674 /* If file exists replace/overwrite. If file doesn't
1676 flags2
|= (O_CREAT
| O_TRUNC
);
1681 /* If file exists open. If file doesn't exist error. */
1682 if (!file_existed
) {
1683 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1684 "requested for file %s and file "
1686 smb_fname_str_dbg(smb_fname
)));
1688 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1692 case FILE_OVERWRITE
:
1693 /* If file exists overwrite. If file doesn't exist
1695 if (!file_existed
) {
1696 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1697 "requested for file %s and file "
1699 smb_fname_str_dbg(smb_fname
) ));
1701 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1708 /* If file exists error. If file doesn't exist
1711 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1712 "requested for file %s and file "
1713 "already exists.\n",
1714 smb_fname_str_dbg(smb_fname
)));
1715 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
1720 return map_nt_error_from_unix(errno
);
1722 flags2
|= (O_CREAT
|O_EXCL
);
1726 /* If file exists open. If file doesn't exist
1732 return NT_STATUS_INVALID_PARAMETER
;
1735 /* We only care about matching attributes on file exists and
1738 if (!posix_open
&& file_existed
&& ((create_disposition
== FILE_OVERWRITE
) ||
1739 (create_disposition
== FILE_OVERWRITE_IF
))) {
1740 if (!open_match_attributes(conn
, existing_dos_attributes
,
1742 smb_fname
->st
.st_ex_mode
,
1743 unx_mode
, &new_unx_mode
)) {
1744 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1745 "for file %s (%x %x) (0%o, 0%o)\n",
1746 smb_fname_str_dbg(smb_fname
),
1747 existing_dos_attributes
,
1749 (unsigned int)smb_fname
->st
.st_ex_mode
,
1750 (unsigned int)unx_mode
));
1752 return NT_STATUS_ACCESS_DENIED
;
1756 status
= smbd_calculate_access_mask(conn
, smb_fname
, file_existed
,
1759 if (!NT_STATUS_IS_OK(status
)) {
1760 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
1761 "on file %s returned %s\n",
1762 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
1766 open_access_mask
= access_mask
;
1768 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
1769 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
1772 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1773 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
1777 * Note that we ignore the append flag as append does not
1778 * mean the same thing under DOS and Unix.
1781 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
1782 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
1783 /* DENY_DOS opens are always underlying read-write on the
1784 file handle, no matter what the requested access mask
1786 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
1787 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|FILE_READ_EA
|FILE_EXECUTE
)) {
1797 * Currently we only look at FILE_WRITE_THROUGH for create options.
1801 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
1806 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
1810 if (!posix_open
&& !CAN_WRITE(conn
)) {
1812 * We should really return a permission denied error if either
1813 * O_CREAT or O_TRUNC are set, but for compatibility with
1814 * older versions of Samba we just AND them out.
1816 flags2
&= ~(O_CREAT
|O_TRUNC
);
1820 * Ensure we can't write on a read-only share or file.
1823 if (flags
!= O_RDONLY
&& file_existed
&&
1824 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
1825 DEBUG(5,("open_file_ntcreate: write access requested for "
1826 "file %s on read only %s\n",
1827 smb_fname_str_dbg(smb_fname
),
1828 !CAN_WRITE(conn
) ? "share" : "file" ));
1830 return NT_STATUS_ACCESS_DENIED
;
1833 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
1834 fsp
->share_access
= share_access
;
1835 fsp
->fh
->private_options
= private_flags
;
1836 fsp
->access_mask
= open_access_mask
; /* We change this to the
1837 * requested access_mask after
1838 * the open is done. */
1839 fsp
->posix_open
= posix_open
;
1841 /* Ensure no SAMBA_PRIVATE bits can be set. */
1842 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1844 if (timeval_is_zero(&request_time
)) {
1845 request_time
= fsp
->open_time
;
1849 struct byte_range_lock
*br_lck
= NULL
;
1850 struct share_mode_entry
*batch_entry
= NULL
;
1851 struct share_mode_entry
*exclusive_entry
= NULL
;
1852 bool got_level2_oplock
= false;
1853 bool got_a_none_oplock
= false;
1855 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
1856 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
1858 if (!acquire_ordered_locks(talloc_tos(),
1866 return NT_STATUS_SHARING_VIOLATION
;
1869 /* Get the types we need to examine. */
1870 find_oplock_types(fsp
,
1876 &got_a_none_oplock
);
1878 /* First pass - send break only on batch oplocks. */
1879 if ((req
!= NULL
) &&
1880 delay_for_batch_oplocks(fsp
,
1884 schedule_defer_open(lck
, request_time
, req
);
1886 return NT_STATUS_SHARING_VIOLATION
;
1889 /* Use the client requested access mask here, not the one we
1891 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
1892 access_mask
, share_access
,
1893 create_options
, &file_existed
);
1895 if (NT_STATUS_IS_OK(status
)) {
1896 /* We might be going to allow this open. Check oplock
1898 /* Second pass - send break for both batch or
1899 * exclusive oplocks. */
1900 if ((req
!= NULL
) &&
1901 delay_for_exclusive_oplocks(
1906 schedule_defer_open(lck
, request_time
, req
);
1908 return NT_STATUS_SHARING_VIOLATION
;
1912 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
1913 /* DELETE_PENDING is not deferred for a second */
1918 grant_fsp_oplock_type(fsp
,
1924 if (!NT_STATUS_IS_OK(status
)) {
1925 uint32 can_access_mask
;
1926 bool can_access
= True
;
1928 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
1930 /* Check if this can be done with the deny_dos and fcb
1933 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1934 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
1936 DEBUG(0, ("DOS open without an SMB "
1939 return NT_STATUS_INTERNAL_ERROR
;
1942 /* Use the client requested access mask here,
1943 * not the one we open with. */
1944 status
= fcb_or_dos_open(req
,
1955 if (NT_STATUS_IS_OK(status
)) {
1958 *pinfo
= FILE_WAS_OPENED
;
1960 return NT_STATUS_OK
;
1965 * This next line is a subtlety we need for
1966 * MS-Access. If a file open will fail due to share
1967 * permissions and also for security (access) reasons,
1968 * we need to return the access failed error, not the
1969 * share error. We can't open the file due to kernel
1970 * oplock deadlock (it's possible we failed above on
1971 * the open_mode_check()) so use a userspace check.
1974 if (flags
& O_RDWR
) {
1975 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
1976 } else if (flags
& O_WRONLY
) {
1977 can_access_mask
= FILE_WRITE_DATA
;
1979 can_access_mask
= FILE_READ_DATA
;
1982 if (((can_access_mask
& FILE_WRITE_DATA
) &&
1983 !CAN_WRITE(conn
)) ||
1984 !can_access_file_data(conn
, smb_fname
,
1990 * If we're returning a share violation, ensure we
1991 * cope with the braindead 1 second delay.
1994 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
1995 lp_defer_sharing_violations()) {
1996 struct timeval timeout
;
1997 struct deferred_open_record state
;
2000 /* this is a hack to speed up torture tests
2002 timeout_usecs
= lp_parm_int(SNUM(conn
),
2003 "smbd","sharedelay",
2004 SHARING_VIOLATION_USEC_WAIT
);
2006 /* This is a relative time, added to the absolute
2007 request_time value to get the absolute timeout time.
2008 Note that if this is the second or greater time we enter
2009 this codepath for this particular request mid then
2010 request_time is left as the absolute time of the *first*
2011 time this request mid was processed. This is what allows
2012 the request to eventually time out. */
2014 timeout
= timeval_set(0, timeout_usecs
);
2016 /* Nothing actually uses state.delayed_for_oplocks
2017 but it's handy to differentiate in debug messages
2018 between a 30 second delay due to oplock break, and
2019 a 1 second delay for share mode conflicts. */
2021 state
.delayed_for_oplocks
= False
;
2025 && !request_timed_out(request_time
,
2027 defer_open(lck
, request_time
, timeout
,
2035 * We have detected a sharing violation here
2036 * so return the correct error code
2038 status
= NT_STATUS_SHARING_VIOLATION
;
2040 status
= NT_STATUS_ACCESS_DENIED
;
2046 * We exit this block with the share entry *locked*.....
2050 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2053 * Ensure we pay attention to default ACLs on directories if required.
2056 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2057 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2058 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2061 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2062 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2063 (unsigned int)flags
, (unsigned int)flags2
,
2064 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2065 (unsigned int)open_access_mask
));
2068 * open_file strips any O_TRUNC flags itself.
2071 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2072 flags
|flags2
, unx_mode
, access_mask
,
2075 if (!NT_STATUS_IS_OK(fsp_open
)) {
2080 if (!file_existed
) {
2081 struct byte_range_lock
*br_lck
= NULL
;
2082 struct share_mode_entry
*batch_entry
= NULL
;
2083 struct share_mode_entry
*exclusive_entry
= NULL
;
2084 bool got_level2_oplock
= false;
2085 bool got_a_none_oplock
= false;
2086 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2088 * Deal with the race condition where two smbd's detect the
2089 * file doesn't exist and do the create at the same time. One
2090 * of them will win and set a share mode, the other (ie. this
2091 * one) should check if the requested share mode for this
2092 * create is allowed.
2096 * Now the file exists and fsp is successfully opened,
2097 * fsp->dev and fsp->inode are valid and should replace the
2098 * dev=0,inode=0 from a non existent file. Spotted by
2099 * Nadav Danieli <nadavd@exanet.com>. JRA.
2104 if (!acquire_ordered_locks(talloc_tos(),
2112 return NT_STATUS_SHARING_VIOLATION
;
2115 /* Get the types we need to examine. */
2116 find_oplock_types(fsp
,
2122 &got_a_none_oplock
);
2124 /* First pass - send break only on batch oplocks. */
2125 if ((req
!= NULL
) &&
2126 delay_for_batch_oplocks(fsp
,
2130 schedule_defer_open(lck
, request_time
, req
);
2133 return NT_STATUS_SHARING_VIOLATION
;
2136 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2137 access_mask
, share_access
,
2138 create_options
, &file_existed
);
2140 if (NT_STATUS_IS_OK(status
)) {
2141 /* We might be going to allow this open. Check oplock
2143 /* Second pass - send break for both batch or
2144 * exclusive oplocks. */
2145 if ((req
!= NULL
) &&
2146 delay_for_exclusive_oplocks(
2151 schedule_defer_open(lck
, request_time
, req
);
2154 return NT_STATUS_SHARING_VIOLATION
;
2158 if (!NT_STATUS_IS_OK(status
)) {
2159 struct deferred_open_record state
;
2161 state
.delayed_for_oplocks
= False
;
2164 /* Do it all over again immediately. In the second
2165 * round we will find that the file existed and handle
2166 * the DELETE_PENDING and FCB cases correctly. No need
2167 * to duplicate the code here. Essentially this is a
2168 * "goto top of this function", but don't tell
2172 defer_open(lck
, request_time
, timeval_zero(),
2180 grant_fsp_oplock_type(fsp
,
2187 * We exit this block with the share entry *locked*.....
2192 SMB_ASSERT(lck
!= NULL
);
2194 /* Delete streams if create_disposition requires it */
2195 if (file_existed
&& clear_ads
&&
2196 !is_ntfs_stream_smb_fname(smb_fname
)) {
2197 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2198 if (!NT_STATUS_IS_OK(status
)) {
2205 /* note that we ignore failure for the following. It is
2206 basically a hack for NFS, and NFS will never set one of
2207 these only read them. Nobody but Samba can ever set a deny
2208 mode and we have already checked our more authoritative
2209 locking database for permission to set this deny mode. If
2210 the kernel refuses the operations then the kernel is wrong.
2211 note that GPFS supports it as well - jmcd */
2213 if (fsp
->fh
->fd
!= -1) {
2215 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2216 if(ret_flock
== -1 ){
2221 return NT_STATUS_SHARING_VIOLATION
;
2226 * At this point onwards, we can guarentee that the share entry
2227 * is locked, whether we created the file or not, and that the
2228 * deny mode is compatible with all current opens.
2232 * If requested, truncate the file.
2235 if (file_existed
&& (flags2
&O_TRUNC
)) {
2237 * We are modifing the file after open - update the stat
2240 if ((SMB_VFS_FTRUNCATE(fsp
, 0) == -1) ||
2241 (SMB_VFS_FSTAT(fsp
, &smb_fname
->st
)==-1)) {
2242 status
= map_nt_error_from_unix(errno
);
2250 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2251 * but we don't have to store this - just ignore it on access check.
2253 if (conn
->sconn
->using_smb2
) {
2255 * SMB2 doesn't return it (according to Microsoft tests).
2256 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2257 * File created with access = 0x7 (Read, Write, Delete)
2258 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2260 fsp
->access_mask
= access_mask
;
2262 /* But SMB1 does. */
2263 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2267 /* stat opens on existing files don't get oplocks. */
2268 if (is_stat_open(open_access_mask
)) {
2269 fsp
->oplock_type
= NO_OPLOCK
;
2272 if (!(flags2
& O_TRUNC
)) {
2273 info
= FILE_WAS_OPENED
;
2275 info
= FILE_WAS_OVERWRITTEN
;
2278 info
= FILE_WAS_CREATED
;
2286 * Setup the oplock info in both the shared memory and
2290 if (!set_file_oplock(fsp
, fsp
->oplock_type
)) {
2292 * Could not get the kernel oplock or there are byte-range
2293 * locks on the file.
2295 fsp
->oplock_type
= NO_OPLOCK
;
2298 if (info
== FILE_WAS_OVERWRITTEN
|| info
== FILE_WAS_CREATED
|| info
== FILE_WAS_SUPERSEDED
) {
2299 new_file_created
= True
;
2302 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2306 /* Handle strange delete on close create semantics. */
2307 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2309 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2311 if (!NT_STATUS_IS_OK(status
)) {
2312 /* Remember to delete the mode we just added. */
2313 del_share_mode(lck
, fsp
);
2318 /* Note that here we set the *inital* delete on close flag,
2319 not the regular one. The magic gets handled in close. */
2320 fsp
->initial_delete_on_close
= True
;
2323 if (new_file_created
) {
2324 /* Files should be initially set as archive */
2325 if (lp_map_archive(SNUM(conn
)) ||
2326 lp_store_dos_attributes(SNUM(conn
))) {
2328 if (file_set_dosmode(conn
, smb_fname
,
2329 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2330 parent_dir
, true) == 0) {
2331 unx_mode
= smb_fname
->st
.st_ex_mode
;
2337 /* Determine sparse flag. */
2339 /* POSIX opens are sparse by default. */
2340 fsp
->is_sparse
= true;
2342 fsp
->is_sparse
= (file_existed
&&
2343 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2347 * Take care of inherited ACLs on created files - if default ACL not
2351 if (!posix_open
&& !file_existed
&& !def_acl
) {
2353 int saved_errno
= errno
; /* We might get ENOSYS in the next
2356 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2358 errno
= saved_errno
; /* Ignore ENOSYS */
2361 } else if (new_unx_mode
) {
2365 /* Attributes need changing. File already existed. */
2368 int saved_errno
= errno
; /* We might get ENOSYS in the
2370 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2372 if (ret
== -1 && errno
== ENOSYS
) {
2373 errno
= saved_errno
; /* Ignore ENOSYS */
2375 DEBUG(5, ("open_file_ntcreate: reset "
2376 "attributes of file %s to 0%o\n",
2377 smb_fname_str_dbg(smb_fname
),
2378 (unsigned int)new_unx_mode
));
2379 ret
= 0; /* Don't do the fchmod below. */
2384 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2385 DEBUG(5, ("open_file_ntcreate: failed to reset "
2386 "attributes of file %s to 0%o\n",
2387 smb_fname_str_dbg(smb_fname
),
2388 (unsigned int)new_unx_mode
));
2391 /* If this is a successful open, we must remove any deferred open
2394 del_deferred_open_entry(lck
, req
->mid
,
2395 sconn_server_id(req
->sconn
));
2399 return NT_STATUS_OK
;
2403 /****************************************************************************
2404 Open a file for for write to ensure that we can fchmod it.
2405 ****************************************************************************/
2407 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2408 struct smb_filename
*smb_fname
,
2409 files_struct
**result
)
2411 if (!VALID_STAT(smb_fname
->st
)) {
2412 return NT_STATUS_INVALID_PARAMETER
;
2415 return SMB_VFS_CREATE_FILE(
2418 0, /* root_dir_fid */
2419 smb_fname
, /* fname */
2420 FILE_WRITE_DATA
, /* access_mask */
2421 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2423 FILE_OPEN
, /* create_disposition*/
2424 0, /* create_options */
2425 0, /* file_attributes */
2426 INTERNAL_OPEN_ONLY
, /* oplock_request */
2427 0, /* allocation_size */
2428 0, /* private_flags */
2431 result
, /* result */
2435 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2436 struct smb_filename
*smb_dname
,
2437 uint32 file_attributes
)
2442 bool posix_open
= false;
2443 bool need_re_stat
= false;
2445 if(!CAN_WRITE(conn
)) {
2446 DEBUG(5,("mkdir_internal: failing create on read-only share "
2447 "%s\n", lp_servicename(SNUM(conn
))));
2448 return NT_STATUS_ACCESS_DENIED
;
2451 status
= check_name(conn
, smb_dname
->base_name
);
2452 if (!NT_STATUS_IS_OK(status
)) {
2456 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2458 return NT_STATUS_NO_MEMORY
;
2461 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2463 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2465 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2468 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2469 return map_nt_error_from_unix(errno
);
2472 /* Ensure we're checking for a symlink here.... */
2473 /* We don't want to get caught by a symlink racer. */
2475 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2476 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2477 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2478 return map_nt_error_from_unix(errno
);
2481 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2482 DEBUG(0, ("Directory just '%s' created is not a directory\n",
2483 smb_fname_str_dbg(smb_dname
)));
2484 return NT_STATUS_ACCESS_DENIED
;
2487 if (lp_store_dos_attributes(SNUM(conn
))) {
2489 file_set_dosmode(conn
, smb_dname
,
2490 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2495 if (lp_inherit_perms(SNUM(conn
))) {
2496 inherit_access_posix_acl(conn
, parent_dir
,
2497 smb_dname
->base_name
, mode
);
2498 need_re_stat
= true;
2503 * Check if high bits should have been set,
2504 * then (if bits are missing): add them.
2505 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2508 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2509 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2510 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2511 (smb_dname
->st
.st_ex_mode
|
2512 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2513 need_re_stat
= true;
2517 /* Change the owner if required. */
2518 if (lp_inherit_owner(SNUM(conn
))) {
2519 change_dir_owner_to_parent(conn
, parent_dir
,
2520 smb_dname
->base_name
,
2522 need_re_stat
= true;
2526 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2527 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2528 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2529 return map_nt_error_from_unix(errno
);
2533 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2534 smb_dname
->base_name
);
2536 return NT_STATUS_OK
;
2539 /****************************************************************************
2540 Ensure we didn't get symlink raced on opening a directory.
2541 ****************************************************************************/
2543 bool check_same_stat(const SMB_STRUCT_STAT
*sbuf1
,
2544 const SMB_STRUCT_STAT
*sbuf2
)
2546 if (sbuf1
->st_ex_uid
!= sbuf2
->st_ex_uid
||
2547 sbuf1
->st_ex_gid
!= sbuf2
->st_ex_gid
||
2548 sbuf1
->st_ex_dev
!= sbuf2
->st_ex_dev
||
2549 sbuf1
->st_ex_ino
!= sbuf2
->st_ex_ino
) {
2555 /****************************************************************************
2556 Open a directory from an NT SMB call.
2557 ****************************************************************************/
2559 static NTSTATUS
open_directory(connection_struct
*conn
,
2560 struct smb_request
*req
,
2561 struct smb_filename
*smb_dname
,
2563 uint32 share_access
,
2564 uint32 create_disposition
,
2565 uint32 create_options
,
2566 uint32 file_attributes
,
2568 files_struct
**result
)
2570 files_struct
*fsp
= NULL
;
2571 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2572 struct share_mode_lock
*lck
= NULL
;
2574 struct timespec mtimespec
;
2577 SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname
));
2579 /* Ensure we have a directory attribute. */
2580 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2582 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2583 "share_access = 0x%x create_options = 0x%x, "
2584 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2585 smb_fname_str_dbg(smb_dname
),
2586 (unsigned int)access_mask
,
2587 (unsigned int)share_access
,
2588 (unsigned int)create_options
,
2589 (unsigned int)create_disposition
,
2590 (unsigned int)file_attributes
));
2592 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
2593 (conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
2594 is_ntfs_stream_smb_fname(smb_dname
)) {
2595 DEBUG(2, ("open_directory: %s is a stream name!\n",
2596 smb_fname_str_dbg(smb_dname
)));
2597 return NT_STATUS_NOT_A_DIRECTORY
;
2600 status
= smbd_calculate_access_mask(conn
, smb_dname
, dir_existed
,
2601 access_mask
, &access_mask
);
2602 if (!NT_STATUS_IS_OK(status
)) {
2603 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2604 "on file %s returned %s\n",
2605 smb_fname_str_dbg(smb_dname
),
2606 nt_errstr(status
)));
2610 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2611 !security_token_has_privilege(get_current_nttok(conn
),
2612 SEC_PRIV_SECURITY
)) {
2613 DEBUG(10, ("open_directory: open on %s "
2614 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2615 smb_fname_str_dbg(smb_dname
)));
2616 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2619 switch( create_disposition
) {
2623 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2626 info
= FILE_WAS_OPENED
;
2631 /* If directory exists error. If directory doesn't
2634 status
= mkdir_internal(conn
, smb_dname
,
2637 if (!NT_STATUS_IS_OK(status
)) {
2638 DEBUG(2, ("open_directory: unable to create "
2639 "%s. Error was %s\n",
2640 smb_fname_str_dbg(smb_dname
),
2641 nt_errstr(status
)));
2645 info
= FILE_WAS_CREATED
;
2650 * If directory exists open. If directory doesn't
2654 status
= mkdir_internal(conn
, smb_dname
,
2657 if (NT_STATUS_IS_OK(status
)) {
2658 info
= FILE_WAS_CREATED
;
2661 if (NT_STATUS_EQUAL(status
,
2662 NT_STATUS_OBJECT_NAME_COLLISION
)) {
2663 info
= FILE_WAS_OPENED
;
2664 status
= NT_STATUS_OK
;
2668 case FILE_SUPERSEDE
:
2669 case FILE_OVERWRITE
:
2670 case FILE_OVERWRITE_IF
:
2672 DEBUG(5,("open_directory: invalid create_disposition "
2673 "0x%x for directory %s\n",
2674 (unsigned int)create_disposition
,
2675 smb_fname_str_dbg(smb_dname
)));
2676 return NT_STATUS_INVALID_PARAMETER
;
2679 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2680 DEBUG(5,("open_directory: %s is not a directory !\n",
2681 smb_fname_str_dbg(smb_dname
)));
2682 return NT_STATUS_NOT_A_DIRECTORY
;
2685 if (info
== FILE_WAS_OPENED
) {
2686 uint32_t access_granted
= 0;
2687 status
= smbd_check_open_rights(conn
, smb_dname
, access_mask
,
2690 /* Were we trying to do a directory open
2691 * for delete and didn't get DELETE
2692 * access (only) ? Check if the
2693 * directory allows DELETE_CHILD.
2695 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
2698 if ((NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
2699 (access_mask
& DELETE_ACCESS
) &&
2700 (access_granted
== DELETE_ACCESS
) &&
2701 can_delete_file_in_directory(conn
, smb_dname
))) {
2702 DEBUG(10,("open_directory: overrode ACCESS_DENIED "
2703 "on directory %s\n",
2704 smb_fname_str_dbg(smb_dname
)));
2705 status
= NT_STATUS_OK
;
2708 if (!NT_STATUS_IS_OK(status
)) {
2709 DEBUG(10, ("open_directory: smbd_check_open_rights on "
2710 "file %s failed with %s\n",
2711 smb_fname_str_dbg(smb_dname
),
2712 nt_errstr(status
)));
2717 status
= file_new(req
, conn
, &fsp
);
2718 if(!NT_STATUS_IS_OK(status
)) {
2723 * Setup the files_struct for it.
2726 fsp
->mode
= smb_dname
->st
.st_ex_mode
;
2727 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
2728 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
2729 fsp
->file_pid
= req
? req
->smbpid
: 0;
2730 fsp
->can_lock
= False
;
2731 fsp
->can_read
= False
;
2732 fsp
->can_write
= False
;
2734 fsp
->share_access
= share_access
;
2735 fsp
->fh
->private_options
= 0;
2737 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2739 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2740 fsp
->print_file
= NULL
;
2741 fsp
->modified
= False
;
2742 fsp
->oplock_type
= NO_OPLOCK
;
2743 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
2744 fsp
->is_directory
= True
;
2745 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
2746 status
= fsp_set_smb_fname(fsp
, smb_dname
);
2747 if (!NT_STATUS_IS_OK(status
)) {
2748 file_free(req
, fsp
);
2752 mtimespec
= smb_dname
->st
.st_ex_mtime
;
2755 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
2757 /* POSIX allows us to open a directory with O_RDONLY. */
2758 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
2760 if (!NT_STATUS_IS_OK(status
)) {
2761 DEBUG(5, ("open_directory: Could not open fd for "
2763 smb_fname_str_dbg(smb_dname
),
2764 nt_errstr(status
)));
2765 file_free(req
, fsp
);
2769 status
= vfs_stat_fsp(fsp
);
2770 if (!NT_STATUS_IS_OK(status
)) {
2772 file_free(req
, fsp
);
2776 /* Ensure there was no race condition. */
2777 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
2778 DEBUG(5,("open_directory: stat struct differs for "
2780 smb_fname_str_dbg(smb_dname
)));
2782 file_free(req
, fsp
);
2783 return NT_STATUS_ACCESS_DENIED
;
2786 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
2787 conn
->connectpath
, smb_dname
, &mtimespec
);
2790 DEBUG(0, ("open_directory: Could not get share mode lock for "
2791 "%s\n", smb_fname_str_dbg(smb_dname
)));
2793 file_free(req
, fsp
);
2794 return NT_STATUS_SHARING_VIOLATION
;
2797 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2798 access_mask
, share_access
,
2799 create_options
, &dir_existed
);
2801 if (!NT_STATUS_IS_OK(status
)) {
2804 file_free(req
, fsp
);
2808 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2809 req
? req
->mid
: 0, NO_OPLOCK
);
2811 /* For directories the delete on close bit at open time seems
2812 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2813 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2814 status
= can_set_delete_on_close(fsp
, 0);
2815 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
2818 file_free(req
, fsp
);
2822 if (NT_STATUS_IS_OK(status
)) {
2823 /* Note that here we set the *inital* delete on close flag,
2824 not the regular one. The magic gets handled in close. */
2825 fsp
->initial_delete_on_close
= True
;
2836 return NT_STATUS_OK
;
2839 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
2840 struct smb_filename
*smb_dname
)
2845 status
= SMB_VFS_CREATE_FILE(
2848 0, /* root_dir_fid */
2849 smb_dname
, /* fname */
2850 FILE_READ_ATTRIBUTES
, /* access_mask */
2851 FILE_SHARE_NONE
, /* share_access */
2852 FILE_CREATE
, /* create_disposition*/
2853 FILE_DIRECTORY_FILE
, /* create_options */
2854 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
2855 0, /* oplock_request */
2856 0, /* allocation_size */
2857 0, /* private_flags */
2863 if (NT_STATUS_IS_OK(status
)) {
2864 close_file(req
, fsp
, NORMAL_CLOSE
);
2870 /****************************************************************************
2871 Receive notification that one of our open files has been renamed by another
2873 ****************************************************************************/
2875 void msg_file_was_renamed(struct messaging_context
*msg
,
2878 struct server_id server_id
,
2881 struct smbd_server_connection
*sconn
;
2883 char *frm
= (char *)data
->data
;
2885 const char *sharepath
;
2886 const char *base_name
;
2887 const char *stream_name
;
2888 struct smb_filename
*smb_fname
= NULL
;
2889 size_t sp_len
, bn_len
;
2892 sconn
= msg_ctx_to_sconn(msg
);
2893 if (sconn
== NULL
) {
2894 DEBUG(1, ("could not find sconn\n"));
2898 if (data
->data
== NULL
2899 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
2900 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
2901 (int)data
->length
));
2905 /* Unpack the message. */
2906 pull_file_id_24(frm
, &id
);
2907 sharepath
= &frm
[24];
2908 sp_len
= strlen(sharepath
);
2909 base_name
= sharepath
+ sp_len
+ 1;
2910 bn_len
= strlen(base_name
);
2911 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
2913 /* stream_name must always be NULL if there is no stream. */
2914 if (stream_name
[0] == '\0') {
2918 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
2919 stream_name
, NULL
, &smb_fname
);
2920 if (!NT_STATUS_IS_OK(status
)) {
2924 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
2926 sharepath
, smb_fname_str_dbg(smb_fname
),
2927 file_id_string_tos(&id
)));
2929 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
2930 fsp
= file_find_di_next(fsp
)) {
2931 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
2933 DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
2934 fsp
->fnum
, fsp_str_dbg(fsp
),
2935 smb_fname_str_dbg(smb_fname
)));
2936 status
= fsp_set_smb_fname(fsp
, smb_fname
);
2937 if (!NT_STATUS_IS_OK(status
)) {
2942 /* Now we have the complete path we can work out if this is
2943 actually within this share and adjust newname accordingly. */
2944 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
2945 "not sharepath %s) "
2946 "fnum %d from %s -> %s\n",
2947 fsp
->conn
->connectpath
,
2951 smb_fname_str_dbg(smb_fname
)));
2955 TALLOC_FREE(smb_fname
);
2960 * If a main file is opened for delete, all streams need to be checked for
2961 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
2962 * If that works, delete them all by setting the delete on close and close.
2965 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
2968 struct stream_struct
*stream_info
= NULL
;
2969 files_struct
**streams
= NULL
;
2971 unsigned int num_streams
= 0;
2972 TALLOC_CTX
*frame
= talloc_stackframe();
2975 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
2976 &num_streams
, &stream_info
);
2978 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
2979 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
2980 DEBUG(10, ("no streams around\n"));
2982 return NT_STATUS_OK
;
2985 if (!NT_STATUS_IS_OK(status
)) {
2986 DEBUG(10, ("vfs_streaminfo failed: %s\n",
2987 nt_errstr(status
)));
2991 DEBUG(10, ("open_streams_for_delete found %d streams\n",
2994 if (num_streams
== 0) {
2996 return NT_STATUS_OK
;
2999 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3000 if (streams
== NULL
) {
3001 DEBUG(0, ("talloc failed\n"));
3002 status
= NT_STATUS_NO_MEMORY
;
3006 for (i
=0; i
<num_streams
; i
++) {
3007 struct smb_filename
*smb_fname
= NULL
;
3009 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3014 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3015 stream_info
[i
].name
,
3017 if (!NT_STATUS_IS_OK(status
)) {
3021 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3022 DEBUG(10, ("Unable to stat stream: %s\n",
3023 smb_fname_str_dbg(smb_fname
)));
3026 status
= SMB_VFS_CREATE_FILE(
3029 0, /* root_dir_fid */
3030 smb_fname
, /* fname */
3031 DELETE_ACCESS
, /* access_mask */
3032 (FILE_SHARE_READ
| /* share_access */
3033 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3034 FILE_OPEN
, /* create_disposition*/
3035 0, /* create_options */
3036 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3037 0, /* oplock_request */
3038 0, /* allocation_size */
3039 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3042 &streams
[i
], /* result */
3045 if (!NT_STATUS_IS_OK(status
)) {
3046 DEBUG(10, ("Could not open stream %s: %s\n",
3047 smb_fname_str_dbg(smb_fname
),
3048 nt_errstr(status
)));
3050 TALLOC_FREE(smb_fname
);
3053 TALLOC_FREE(smb_fname
);
3057 * don't touch the variable "status" beyond this point :-)
3060 for (i
-= 1 ; i
>= 0; i
--) {
3061 if (streams
[i
] == NULL
) {
3065 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3066 fsp_str_dbg(streams
[i
])));
3067 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3076 * Wrapper around open_file_ntcreate and open_directory
3079 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3080 struct smb_request
*req
,
3081 struct smb_filename
*smb_fname
,
3082 uint32_t access_mask
,
3083 uint32_t share_access
,
3084 uint32_t create_disposition
,
3085 uint32_t create_options
,
3086 uint32_t file_attributes
,
3087 uint32_t oplock_request
,
3088 uint64_t allocation_size
,
3089 uint32_t private_flags
,
3090 struct security_descriptor
*sd
,
3091 struct ea_list
*ea_list
,
3093 files_struct
**result
,
3096 int info
= FILE_WAS_OPENED
;
3097 files_struct
*base_fsp
= NULL
;
3098 files_struct
*fsp
= NULL
;
3101 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3102 "file_attributes = 0x%x, share_access = 0x%x, "
3103 "create_disposition = 0x%x create_options = 0x%x "
3104 "oplock_request = 0x%x private_flags = 0x%x "
3105 "ea_list = 0x%p, sd = 0x%p, "
3107 (unsigned int)access_mask
,
3108 (unsigned int)file_attributes
,
3109 (unsigned int)share_access
,
3110 (unsigned int)create_disposition
,
3111 (unsigned int)create_options
,
3112 (unsigned int)oplock_request
,
3113 (unsigned int)private_flags
,
3114 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3116 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3117 status
= NT_STATUS_NOT_SUPPORTED
;
3121 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3122 status
= NT_STATUS_INVALID_PARAMETER
;
3127 oplock_request
|= INTERNAL_OPEN_ONLY
;
3130 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3131 && (access_mask
& DELETE_ACCESS
)
3132 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3134 * We can't open a file with DELETE access if any of the
3135 * streams is open without FILE_SHARE_DELETE
3137 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3139 if (!NT_STATUS_IS_OK(status
)) {
3144 /* This is the correct thing to do (check every time) but can_delete
3145 * is expensive (it may have to read the parent directory
3146 * permissions). So for now we're not doing it unless we have a strong
3147 * hint the client is really going to delete this file. If the client
3148 * is forcing FILE_CREATE let the filesystem take care of the
3151 /* Setting FILE_SHARE_DELETE is the hint. */
3153 if ((create_disposition
!= FILE_CREATE
)
3154 && (access_mask
& DELETE_ACCESS
)
3155 && (!(can_delete_file_in_directory(conn
, smb_fname
) ||
3156 can_access_file_acl(conn
, smb_fname
, DELETE_ACCESS
)))) {
3157 status
= NT_STATUS_ACCESS_DENIED
;
3158 DEBUG(10,("create_file_unixpath: open file %s "
3159 "for delete ACCESS_DENIED\n",
3160 smb_fname_str_dbg(smb_fname
)));
3164 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3165 !security_token_has_privilege(get_current_nttok(conn
),
3166 SEC_PRIV_SECURITY
)) {
3167 DEBUG(10, ("create_file_unixpath: open on %s "
3168 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3169 smb_fname_str_dbg(smb_fname
)));
3170 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3174 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3175 && is_ntfs_stream_smb_fname(smb_fname
)
3176 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3177 uint32 base_create_disposition
;
3178 struct smb_filename
*smb_fname_base
= NULL
;
3180 if (create_options
& FILE_DIRECTORY_FILE
) {
3181 status
= NT_STATUS_NOT_A_DIRECTORY
;
3185 switch (create_disposition
) {
3187 base_create_disposition
= FILE_OPEN
;
3190 base_create_disposition
= FILE_OPEN_IF
;
3194 /* Create an smb_filename with stream_name == NULL. */
3195 status
= create_synthetic_smb_fname(talloc_tos(),
3196 smb_fname
->base_name
,
3199 if (!NT_STATUS_IS_OK(status
)) {
3203 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3204 DEBUG(10, ("Unable to stat stream: %s\n",
3205 smb_fname_str_dbg(smb_fname_base
)));
3208 /* Open the base file. */
3209 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3212 | FILE_SHARE_DELETE
,
3213 base_create_disposition
,
3214 0, 0, 0, 0, 0, NULL
, NULL
,
3216 TALLOC_FREE(smb_fname_base
);
3218 if (!NT_STATUS_IS_OK(status
)) {
3219 DEBUG(10, ("create_file_unixpath for base %s failed: "
3220 "%s\n", smb_fname
->base_name
,
3221 nt_errstr(status
)));
3224 /* we don't need to low level fd */
3229 * If it's a request for a directory open, deal with it separately.
3232 if (create_options
& FILE_DIRECTORY_FILE
) {
3234 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3235 status
= NT_STATUS_INVALID_PARAMETER
;
3239 /* Can't open a temp directory. IFS kit test. */
3240 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3241 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3242 status
= NT_STATUS_INVALID_PARAMETER
;
3247 * We will get a create directory here if the Win32
3248 * app specified a security descriptor in the
3249 * CreateDirectory() call.
3253 status
= open_directory(
3254 conn
, req
, smb_fname
, access_mask
, share_access
,
3255 create_disposition
, create_options
, file_attributes
,
3260 * Ordinary file case.
3263 status
= file_new(req
, conn
, &fsp
);
3264 if(!NT_STATUS_IS_OK(status
)) {
3268 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3269 if (!NT_STATUS_IS_OK(status
)) {
3274 * We're opening the stream element of a base_fsp
3275 * we already opened. Set up the base_fsp pointer.
3278 fsp
->base_fsp
= base_fsp
;
3281 status
= open_file_ntcreate(conn
,
3293 if(!NT_STATUS_IS_OK(status
)) {
3294 file_free(req
, fsp
);
3298 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3300 /* A stream open never opens a directory */
3303 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3308 * Fail the open if it was explicitly a non-directory
3312 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3313 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3318 status
= open_directory(
3319 conn
, req
, smb_fname
, access_mask
,
3320 share_access
, create_disposition
,
3321 create_options
, file_attributes
,
3326 if (!NT_STATUS_IS_OK(status
)) {
3330 fsp
->base_fsp
= base_fsp
;
3333 * According to the MS documentation, the only time the security
3334 * descriptor is applied to the opened file is iff we *created* the
3335 * file; an existing file stays the same.
3337 * Also, it seems (from observation) that you can open the file with
3338 * any access mask but you can still write the sd. We need to override
3339 * the granted access before we call set_sd
3340 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3343 if ((sd
!= NULL
) && (info
== FILE_WAS_CREATED
)
3344 && lp_nt_acl_support(SNUM(conn
))) {
3346 uint32_t sec_info_sent
;
3347 uint32_t saved_access_mask
= fsp
->access_mask
;
3349 sec_info_sent
= get_sec_info(sd
);
3351 fsp
->access_mask
= FILE_GENERIC_ALL
;
3353 /* Convert all the generic bits. */
3354 security_acl_map_generic(sd
->dacl
, &file_generic_mapping
);
3355 security_acl_map_generic(sd
->sacl
, &file_generic_mapping
);
3357 if (sec_info_sent
& (SECINFO_OWNER
|
3361 status
= SMB_VFS_FSET_NT_ACL(fsp
, sec_info_sent
, sd
);
3364 fsp
->access_mask
= saved_access_mask
;
3366 if (!NT_STATUS_IS_OK(status
)) {
3371 if ((ea_list
!= NULL
) &&
3372 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3373 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3374 if (!NT_STATUS_IS_OK(status
)) {
3379 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3380 status
= NT_STATUS_ACCESS_DENIED
;
3384 /* Save the requested allocation size. */
3385 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3387 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3388 fsp
->initial_allocation_size
= smb_roundup(
3389 fsp
->conn
, allocation_size
);
3390 if (fsp
->is_directory
) {
3391 /* Can't set allocation size on a directory. */
3392 status
= NT_STATUS_ACCESS_DENIED
;
3395 if (vfs_allocate_file_space(
3396 fsp
, fsp
->initial_allocation_size
) == -1) {
3397 status
= NT_STATUS_DISK_FULL
;
3401 fsp
->initial_allocation_size
= smb_roundup(
3402 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3406 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3409 if (pinfo
!= NULL
) {
3413 smb_fname
->st
= fsp
->fsp_name
->st
;
3415 return NT_STATUS_OK
;
3418 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3421 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3423 * The close_file below will close
3428 close_file(req
, fsp
, ERROR_CLOSE
);
3431 if (base_fsp
!= NULL
) {
3432 close_file(req
, base_fsp
, ERROR_CLOSE
);
3439 * Calculate the full path name given a relative fid.
3441 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3442 struct smb_request
*req
,
3443 uint16_t root_dir_fid
,
3444 const struct smb_filename
*smb_fname
,
3445 struct smb_filename
**smb_fname_out
)
3447 files_struct
*dir_fsp
;
3448 char *parent_fname
= NULL
;
3449 char *new_base_name
= NULL
;
3452 if (root_dir_fid
== 0 || !smb_fname
) {
3453 status
= NT_STATUS_INTERNAL_ERROR
;
3457 dir_fsp
= file_fsp(req
, root_dir_fid
);
3459 if (dir_fsp
== NULL
) {
3460 status
= NT_STATUS_INVALID_HANDLE
;
3464 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3465 status
= NT_STATUS_INVALID_HANDLE
;
3469 if (!dir_fsp
->is_directory
) {
3472 * Check to see if this is a mac fork of some kind.
3475 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3476 is_ntfs_stream_smb_fname(smb_fname
)) {
3477 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3482 we need to handle the case when we get a
3483 relative open relative to a file and the
3484 pathname is blank - this is a reopen!
3485 (hint from demyn plantenberg)
3488 status
= NT_STATUS_INVALID_HANDLE
;
3492 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3494 * We're at the toplevel dir, the final file name
3495 * must not contain ./, as this is filtered out
3496 * normally by srvstr_get_path and unix_convert
3497 * explicitly rejects paths containing ./.
3499 parent_fname
= talloc_strdup(talloc_tos(), "");
3500 if (parent_fname
== NULL
) {
3501 status
= NT_STATUS_NO_MEMORY
;
3505 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3508 * Copy in the base directory name.
3511 parent_fname
= talloc_array(talloc_tos(), char,
3513 if (parent_fname
== NULL
) {
3514 status
= NT_STATUS_NO_MEMORY
;
3517 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3521 * Ensure it ends in a '/'.
3522 * We used TALLOC_SIZE +2 to add space for the '/'.
3526 && (parent_fname
[dir_name_len
-1] != '\\')
3527 && (parent_fname
[dir_name_len
-1] != '/')) {
3528 parent_fname
[dir_name_len
] = '/';
3529 parent_fname
[dir_name_len
+1] = '\0';
3533 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3534 smb_fname
->base_name
);
3535 if (new_base_name
== NULL
) {
3536 status
= NT_STATUS_NO_MEMORY
;
3540 status
= filename_convert(req
,
3542 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3547 if (!NT_STATUS_IS_OK(status
)) {
3552 TALLOC_FREE(parent_fname
);
3553 TALLOC_FREE(new_base_name
);
3557 NTSTATUS
create_file_default(connection_struct
*conn
,
3558 struct smb_request
*req
,
3559 uint16_t root_dir_fid
,
3560 struct smb_filename
*smb_fname
,
3561 uint32_t access_mask
,
3562 uint32_t share_access
,
3563 uint32_t create_disposition
,
3564 uint32_t create_options
,
3565 uint32_t file_attributes
,
3566 uint32_t oplock_request
,
3567 uint64_t allocation_size
,
3568 uint32_t private_flags
,
3569 struct security_descriptor
*sd
,
3570 struct ea_list
*ea_list
,
3571 files_struct
**result
,
3574 int info
= FILE_WAS_OPENED
;
3575 files_struct
*fsp
= NULL
;
3577 bool stream_name
= false;
3579 DEBUG(10,("create_file: access_mask = 0x%x "
3580 "file_attributes = 0x%x, share_access = 0x%x, "
3581 "create_disposition = 0x%x create_options = 0x%x "
3582 "oplock_request = 0x%x "
3583 "private_flags = 0x%x "
3584 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3586 (unsigned int)access_mask
,
3587 (unsigned int)file_attributes
,
3588 (unsigned int)share_access
,
3589 (unsigned int)create_disposition
,
3590 (unsigned int)create_options
,
3591 (unsigned int)oplock_request
,
3592 (unsigned int)private_flags
,
3593 (unsigned int)root_dir_fid
,
3594 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3597 * Calculate the filename from the root_dir_if if necessary.
3600 if (root_dir_fid
!= 0) {
3601 struct smb_filename
*smb_fname_out
= NULL
;
3602 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
3603 smb_fname
, &smb_fname_out
);
3604 if (!NT_STATUS_IS_OK(status
)) {
3607 smb_fname
= smb_fname_out
;
3611 * Check to see if this is a mac fork of some kind.
3614 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
3616 enum FAKE_FILE_TYPE fake_file_type
;
3618 fake_file_type
= is_fake_file(smb_fname
);
3620 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
3623 * Here we go! support for changing the disk quotas
3626 * We need to fake up to open this MAGIC QUOTA file
3627 * and return a valid FID.
3629 * w2k close this file directly after openening xp
3630 * also tries a QUERY_FILE_INFO on the file and then
3633 status
= open_fake_file(req
, conn
, req
->vuid
,
3634 fake_file_type
, smb_fname
,
3636 if (!NT_STATUS_IS_OK(status
)) {
3640 ZERO_STRUCT(smb_fname
->st
);
3644 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
3645 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
3650 /* All file access must go through check_name() */
3652 status
= check_name(conn
, smb_fname
->base_name
);
3653 if (!NT_STATUS_IS_OK(status
)) {
3657 if (stream_name
&& is_ntfs_default_stream_smb_fname(smb_fname
)) {
3659 smb_fname
->stream_name
= NULL
;
3660 /* We have to handle this error here. */
3661 if (create_options
& FILE_DIRECTORY_FILE
) {
3662 status
= NT_STATUS_NOT_A_DIRECTORY
;
3665 if (lp_posix_pathnames()) {
3666 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
3668 ret
= SMB_VFS_STAT(conn
, smb_fname
);
3671 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
3672 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3677 status
= create_file_unixpath(
3678 conn
, req
, smb_fname
, access_mask
, share_access
,
3679 create_disposition
, create_options
, file_attributes
,
3680 oplock_request
, allocation_size
, private_flags
,
3684 if (!NT_STATUS_IS_OK(status
)) {
3689 DEBUG(10, ("create_file: info=%d\n", info
));
3692 if (pinfo
!= NULL
) {
3695 return NT_STATUS_OK
;
3698 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
3701 close_file(req
, fsp
, ERROR_CLOSE
);