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 "smbd/globals.h"
24 #include "librpc/gen_ndr/messaging.h"
25 #include "../librpc/gen_ndr/ndr_security.h"
27 extern const struct generic_mapping file_generic_mapping
;
29 struct deferred_open_record
{
30 bool delayed_for_oplocks
;
34 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
35 struct smb_request
*req
,
36 struct smb_filename
*smb_fname
,
38 uint32_t share_access
,
39 uint32_t create_disposition
,
40 uint32_t create_options
,
41 uint32_t file_attributes
,
42 uint32_t oplock_request
,
43 uint64_t allocation_size
,
44 uint32_t private_flags
,
45 struct security_descriptor
*sd
,
46 struct ea_list
*ea_list
,
48 files_struct
**result
,
51 /****************************************************************************
52 SMB1 file varient of se_access_check. Never test FILE_READ_ATTRIBUTES.
53 ****************************************************************************/
55 NTSTATUS
smb1_file_se_access_check(struct connection_struct
*conn
,
56 const struct security_descriptor
*sd
,
57 const NT_USER_TOKEN
*token
,
58 uint32_t access_desired
,
59 uint32_t *access_granted
)
63 if (get_current_uid(conn
) == (uid_t
)0) {
64 /* I'm sorry sir, I didn't know you were root... */
65 *access_granted
= access_desired
;
66 if (access_desired
& SEC_FLAG_MAXIMUM_ALLOWED
) {
67 *access_granted
|= FILE_GENERIC_ALL
;
72 return se_access_check(sd
,
74 (access_desired
& ~FILE_READ_ATTRIBUTES
),
78 /****************************************************************************
79 Check if we have open rights.
80 ****************************************************************************/
82 NTSTATUS
smbd_check_open_rights(struct connection_struct
*conn
,
83 const struct smb_filename
*smb_fname
,
85 uint32_t *access_granted
)
87 /* Check if we have rights to open. */
89 struct security_descriptor
*sd
= NULL
;
91 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
96 if (!NT_STATUS_IS_OK(status
)) {
97 DEBUG(10, ("smbd_check_open_rights: Could not get acl "
99 smb_fname_str_dbg(smb_fname
),
104 status
= smb1_file_se_access_check(conn
,
106 get_current_nttok(conn
),
110 DEBUG(10,("smbd_check_open_rights: file %s requesting "
111 "0x%x returning 0x%x (%s)\n",
112 smb_fname_str_dbg(smb_fname
),
113 (unsigned int)access_mask
,
114 (unsigned int)*access_granted
,
115 nt_errstr(status
) ));
117 if (!NT_STATUS_IS_OK(status
)) {
118 if (DEBUGLEVEL
>= 10) {
119 DEBUG(10,("smbd_check_open_rights: acl for %s is:\n",
120 smb_fname_str_dbg(smb_fname
) ));
121 NDR_PRINT_DEBUG(security_descriptor
, sd
);
130 /****************************************************************************
131 fd support routines - attempt to do a dos_open.
132 ****************************************************************************/
134 static NTSTATUS
fd_open(struct connection_struct
*conn
,
139 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
140 NTSTATUS status
= NT_STATUS_OK
;
144 * Never follow symlinks on a POSIX client. The
145 * client should be doing this.
148 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
153 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
154 if (fsp
->fh
->fd
== -1) {
155 status
= map_nt_error_from_unix(errno
);
156 if (errno
== EMFILE
) {
157 static time_t last_warned
= 0L;
159 if (time((time_t *) NULL
) > last_warned
) {
160 DEBUG(0,("Too many open files, unable "
161 "to open more! smbd's max "
163 lp_max_open_files()));
164 last_warned
= time((time_t *) NULL
);
170 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
171 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
172 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
177 /****************************************************************************
178 Close the file associated with a fsp.
179 ****************************************************************************/
181 NTSTATUS
fd_close(files_struct
*fsp
)
185 if (fsp
->fh
->fd
== -1) {
186 return NT_STATUS_OK
; /* What we used to call a stat open. */
188 if (fsp
->fh
->ref_count
> 1) {
189 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
192 ret
= SMB_VFS_CLOSE(fsp
);
195 return map_nt_error_from_unix(errno
);
200 /****************************************************************************
201 Change the ownership of a file to that of the parent directory.
202 Do this by fd if possible.
203 ****************************************************************************/
205 void change_file_owner_to_parent(connection_struct
*conn
,
206 const char *inherit_from_dir
,
209 struct smb_filename
*smb_fname_parent
= NULL
;
213 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
214 NULL
, NULL
, &smb_fname_parent
);
215 if (!NT_STATUS_IS_OK(status
)) {
219 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
221 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
222 "directory %s. Error was %s\n",
223 smb_fname_str_dbg(smb_fname_parent
),
229 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
232 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
233 "file %s to parent directory uid %u. Error "
234 "was %s\n", fsp_str_dbg(fsp
),
235 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
239 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
240 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
241 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
243 TALLOC_FREE(smb_fname_parent
);
246 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
247 const char *inherit_from_dir
,
249 SMB_STRUCT_STAT
*psbuf
)
251 struct smb_filename
*smb_fname_parent
= NULL
;
252 struct smb_filename
*smb_fname_cwd
= NULL
;
253 char *saved_dir
= NULL
;
254 TALLOC_CTX
*ctx
= talloc_tos();
255 NTSTATUS status
= NT_STATUS_OK
;
258 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
260 if (!NT_STATUS_IS_OK(status
)) {
264 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
266 status
= map_nt_error_from_unix(errno
);
267 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
268 "directory %s. Error was %s\n",
269 smb_fname_str_dbg(smb_fname_parent
),
274 /* We've already done an lstat into psbuf, and we know it's a
275 directory. If we can cd into the directory and the dev/ino
276 are the same then we can safely chown without races as
277 we're locking the directory in place by being in it. This
278 should work on any UNIX (thanks tridge :-). JRA.
281 saved_dir
= vfs_GetWd(ctx
,conn
);
283 status
= map_nt_error_from_unix(errno
);
284 DEBUG(0,("change_dir_owner_to_parent: failed to get "
285 "current working directory. Error was %s\n",
290 /* Chdir into the new path. */
291 if (vfs_ChDir(conn
, fname
) == -1) {
292 status
= map_nt_error_from_unix(errno
);
293 DEBUG(0,("change_dir_owner_to_parent: failed to change "
294 "current working directory to %s. Error "
295 "was %s\n", fname
, strerror(errno
) ));
299 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
301 if (!NT_STATUS_IS_OK(status
)) {
305 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
307 status
= map_nt_error_from_unix(errno
);
308 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
309 "directory '.' (%s) Error was %s\n",
310 fname
, strerror(errno
)));
314 /* Ensure we're pointing at the same place. */
315 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
316 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
||
317 smb_fname_cwd
->st
.st_ex_mode
!= psbuf
->st_ex_mode
) {
318 DEBUG(0,("change_dir_owner_to_parent: "
319 "device/inode/mode on directory %s changed. "
320 "Refusing to chown !\n", fname
));
321 status
= NT_STATUS_ACCESS_DENIED
;
326 ret
= SMB_VFS_CHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
330 status
= map_nt_error_from_unix(errno
);
331 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
332 "directory %s to parent directory uid %u. "
333 "Error was %s\n", fname
,
334 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
339 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
340 "directory %s to parent directory uid %u.\n",
341 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
344 vfs_ChDir(conn
,saved_dir
);
346 TALLOC_FREE(smb_fname_parent
);
347 TALLOC_FREE(smb_fname_cwd
);
351 /****************************************************************************
353 ****************************************************************************/
355 static NTSTATUS
open_file(files_struct
*fsp
,
356 connection_struct
*conn
,
357 struct smb_request
*req
,
358 const char *parent_dir
,
361 uint32 access_mask
, /* client requested access mask. */
362 uint32 open_access_mask
) /* what we're actually using in the open. */
364 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
365 NTSTATUS status
= NT_STATUS_OK
;
366 int accmode
= (flags
& O_ACCMODE
);
367 int local_flags
= flags
;
368 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
373 /* Check permissions */
376 * This code was changed after seeing a client open request
377 * containing the open mode of (DENY_WRITE/read-only) with
378 * the 'create if not exist' bit set. The previous code
379 * would fail to open the file read only on a read-only share
380 * as it was checking the flags parameter directly against O_RDONLY,
381 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
385 if (!CAN_WRITE(conn
)) {
386 /* It's a read-only share - fail if we wanted to write. */
387 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
388 DEBUG(3,("Permission denied opening %s\n",
389 smb_fname_str_dbg(smb_fname
)));
390 return NT_STATUS_ACCESS_DENIED
;
391 } else if(flags
& O_CREAT
) {
392 /* We don't want to write - but we must make sure that
393 O_CREAT doesn't create the file if we have write
394 access into the directory.
396 flags
&= ~(O_CREAT
|O_EXCL
);
397 local_flags
&= ~(O_CREAT
|O_EXCL
);
402 * This little piece of insanity is inspired by the
403 * fact that an NT client can open a file for O_RDONLY,
404 * but set the create disposition to FILE_EXISTS_TRUNCATE.
405 * If the client *can* write to the file, then it expects to
406 * truncate the file, even though it is opening for readonly.
407 * Quicken uses this stupid trick in backup file creation...
408 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
409 * for helping track this one down. It didn't bite us in 2.0.x
410 * as we always opened files read-write in that release. JRA.
413 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
414 DEBUG(10,("open_file: truncate requested on read-only open "
415 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
416 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
419 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
420 (!file_existed
&& (local_flags
& O_CREAT
)) ||
421 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
425 * We can't actually truncate here as the file may be locked.
426 * open_file_ntcreate will take care of the truncate later. JRA.
429 local_flags
&= ~O_TRUNC
;
431 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
433 * We would block on opening a FIFO with no one else on the
434 * other end. Do what we used to do and add O_NONBLOCK to the
438 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
439 local_flags
|= O_NONBLOCK
;
443 /* Don't create files with Microsoft wildcard characters. */
446 * wildcard characters are allowed in stream names
447 * only test the basefilename
449 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
451 wild
= smb_fname
->base_name
;
453 if ((local_flags
& O_CREAT
) && !file_existed
&&
455 return NT_STATUS_OBJECT_NAME_INVALID
;
458 /* Actually do the open */
459 status
= fd_open(conn
, fsp
, local_flags
, unx_mode
);
460 if (!NT_STATUS_IS_OK(status
)) {
461 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
462 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
463 nt_errstr(status
),local_flags
,flags
));
467 if ((local_flags
& O_CREAT
) && !file_existed
) {
469 /* Inherit the ACL if required */
470 if (lp_inherit_perms(SNUM(conn
))) {
471 inherit_access_posix_acl(conn
, parent_dir
,
472 smb_fname
->base_name
,
476 /* Change the owner if required. */
477 if (lp_inherit_owner(SNUM(conn
))) {
478 change_file_owner_to_parent(conn
, parent_dir
,
482 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
483 FILE_NOTIFY_CHANGE_FILE_NAME
,
484 smb_fname
->base_name
);
488 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
490 uint32_t access_granted
= 0;
492 status
= smbd_check_open_rights(conn
,
496 if (!NT_STATUS_IS_OK(status
)) {
497 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
499 * On NT_STATUS_ACCESS_DENIED, access_granted
500 * contains the denied bits.
503 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
504 (access_granted
& FILE_WRITE_ATTRIBUTES
) &&
505 (lp_map_readonly(SNUM(conn
)) ||
506 lp_map_archive(SNUM(conn
)) ||
507 lp_map_hidden(SNUM(conn
)) ||
508 lp_map_system(SNUM(conn
)))) {
509 access_granted
&= ~FILE_WRITE_ATTRIBUTES
;
511 DEBUG(10,("open_file: "
520 if ((access_mask
& DELETE_ACCESS
) &&
521 (access_granted
& DELETE_ACCESS
) &&
522 can_delete_file_in_directory(conn
,
524 /* Were we trying to do a stat open
525 * for delete and didn't get DELETE
526 * access (only) ? Check if the
527 * directory allows DELETE_CHILD.
529 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
532 access_granted
&= ~DELETE_ACCESS
;
534 DEBUG(10,("open_file: "
542 if (access_granted
!= 0) {
543 DEBUG(10,("open_file: Access "
550 } else if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
552 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
553 /* This is a POSIX stat open for delete
554 * or rename on a symlink that points
556 DEBUG(10,("open_file: allowing POSIX "
557 "open on bad symlink %s\n",
561 DEBUG(10,("open_file: "
562 "smbd_check_open_rights on file "
564 smb_fname_str_dbg(smb_fname
),
565 nt_errstr(status
) ));
575 if (fsp
->fh
->fd
== -1) {
576 ret
= SMB_VFS_STAT(conn
, smb_fname
);
578 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
579 /* If we have an fd, this stat should succeed. */
581 DEBUG(0,("Error doing fstat on open file %s "
583 smb_fname_str_dbg(smb_fname
),
588 /* For a non-io open, this stat failing means file not found. JRA */
590 status
= map_nt_error_from_unix(errno
);
597 * POSIX allows read-only opens of directories. We don't
598 * want to do this (we use a different code path for this)
599 * so catch a directory open and return an EISDIR. JRA.
602 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
605 return NT_STATUS_FILE_IS_A_DIRECTORY
;
608 fsp
->mode
= smb_fname
->st
.st_ex_mode
;
609 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
610 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
611 fsp
->file_pid
= req
? req
->smbpid
: 0;
612 fsp
->can_lock
= True
;
613 fsp
->can_read
= (access_mask
& (FILE_READ_DATA
)) ? True
: False
;
614 if (!CAN_WRITE(conn
)) {
615 fsp
->can_write
= False
;
617 fsp
->can_write
= (access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ?
620 fsp
->print_file
= NULL
;
621 fsp
->modified
= False
;
622 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
623 fsp
->is_directory
= False
;
624 if (conn
->aio_write_behind_list
&&
625 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
626 conn
->case_sensitive
)) {
627 fsp
->aio_write_behind
= True
;
630 fsp
->wcp
= NULL
; /* Write cache pointer. */
632 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
633 conn
->server_info
->unix_name
,
634 smb_fname_str_dbg(smb_fname
),
635 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
636 conn
->num_files_open
));
642 /*******************************************************************
643 Return True if the filename is one of the special executable types.
644 ********************************************************************/
646 bool is_executable(const char *fname
)
648 if ((fname
= strrchr_m(fname
,'.'))) {
649 if (strequal(fname
,".com") ||
650 strequal(fname
,".dll") ||
651 strequal(fname
,".exe") ||
652 strequal(fname
,".sym")) {
659 /****************************************************************************
660 Check if we can open a file with a share mode.
661 Returns True if conflict, False if not.
662 ****************************************************************************/
664 static bool share_conflict(struct share_mode_entry
*entry
,
668 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
669 "entry->share_access = 0x%x, "
670 "entry->private_options = 0x%x\n",
671 (unsigned int)entry
->access_mask
,
672 (unsigned int)entry
->share_access
,
673 (unsigned int)entry
->private_options
));
675 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
676 (unsigned int)access_mask
, (unsigned int)share_access
));
678 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
682 DELETE_ACCESS
)) == 0) {
683 DEBUG(10,("share_conflict: No conflict due to "
684 "entry->access_mask = 0x%x\n",
685 (unsigned int)entry
->access_mask
));
689 if ((access_mask
& (FILE_WRITE_DATA
|
693 DELETE_ACCESS
)) == 0) {
694 DEBUG(10,("share_conflict: No conflict due to "
695 "access_mask = 0x%x\n",
696 (unsigned int)access_mask
));
700 #if 1 /* JRA TEST - Superdebug. */
701 #define CHECK_MASK(num, am, right, sa, share) \
702 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
703 (unsigned int)(num), (unsigned int)(am), \
704 (unsigned int)(right), (unsigned int)(am)&(right) )); \
705 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
706 (unsigned int)(num), (unsigned int)(sa), \
707 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
708 if (((am) & (right)) && !((sa) & (share))) { \
709 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
710 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
711 (unsigned int)(share) )); \
715 #define CHECK_MASK(num, am, right, sa, share) \
716 if (((am) & (right)) && !((sa) & (share))) { \
717 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
718 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
719 (unsigned int)(share) )); \
724 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
725 share_access
, FILE_SHARE_WRITE
);
726 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
727 entry
->share_access
, FILE_SHARE_WRITE
);
729 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
730 share_access
, FILE_SHARE_READ
);
731 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
732 entry
->share_access
, FILE_SHARE_READ
);
734 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
735 share_access
, FILE_SHARE_DELETE
);
736 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
737 entry
->share_access
, FILE_SHARE_DELETE
);
739 DEBUG(10,("share_conflict: No conflict.\n"));
743 #if defined(DEVELOPER)
744 static void validate_my_share_entries(int num
,
745 struct share_mode_entry
*share_entry
)
749 if (!procid_is_me(&share_entry
->pid
)) {
753 if (is_deferred_open_entry(share_entry
) &&
754 !open_was_deferred(share_entry
->op_mid
)) {
755 char *str
= talloc_asprintf(talloc_tos(),
756 "Got a deferred entry without a request: "
758 share_mode_str(talloc_tos(), num
, share_entry
));
762 if (!is_valid_share_mode_entry(share_entry
)) {
766 fsp
= file_find_dif(share_entry
->id
,
767 share_entry
->share_file_id
);
769 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
770 share_mode_str(talloc_tos(), num
, share_entry
) ));
771 smb_panic("validate_my_share_entries: Cannot match a "
772 "share entry with an open file\n");
775 if (is_deferred_open_entry(share_entry
) ||
776 is_unused_share_mode_entry(share_entry
)) {
780 if ((share_entry
->op_type
== NO_OPLOCK
) &&
781 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
782 /* Someone has already written to it, but I haven't yet
787 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
796 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
797 share_mode_str(talloc_tos(), num
, share_entry
) ));
798 str
= talloc_asprintf(talloc_tos(),
799 "validate_my_share_entries: "
800 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
801 fsp
->fsp_name
->base_name
,
802 (unsigned int)fsp
->oplock_type
,
803 (unsigned int)share_entry
->op_type
);
809 bool is_stat_open(uint32 access_mask
)
811 return (access_mask
&&
812 ((access_mask
& ~(SYNCHRONIZE_ACCESS
| FILE_READ_ATTRIBUTES
|
813 FILE_WRITE_ATTRIBUTES
))==0) &&
814 ((access_mask
& (SYNCHRONIZE_ACCESS
|FILE_READ_ATTRIBUTES
|
815 FILE_WRITE_ATTRIBUTES
)) != 0));
818 /****************************************************************************
819 Deal with share modes
820 Invarient: Share mode must be locked on entry and exit.
821 Returns -1 on error, or number of share modes on success (may be zero).
822 ****************************************************************************/
824 static NTSTATUS
open_mode_check(connection_struct
*conn
,
825 struct share_mode_lock
*lck
,
828 uint32 create_options
,
833 if(lck
->num_share_modes
== 0) {
837 *file_existed
= True
;
839 /* A delete on close prohibits everything */
841 if (lck
->delete_on_close
) {
842 return NT_STATUS_DELETE_PENDING
;
845 if (is_stat_open(access_mask
)) {
846 /* Stat open that doesn't trigger oplock breaks or share mode
847 * checks... ! JRA. */
852 * Check if the share modes will give us access.
855 #if defined(DEVELOPER)
856 for(i
= 0; i
< lck
->num_share_modes
; i
++) {
857 validate_my_share_entries(i
, &lck
->share_modes
[i
]);
861 if (!lp_share_modes(SNUM(conn
))) {
865 /* Now we check the share modes, after any oplock breaks. */
866 for(i
= 0; i
< lck
->num_share_modes
; i
++) {
868 if (!is_valid_share_mode_entry(&lck
->share_modes
[i
])) {
872 /* someone else has a share lock on it, check to see if we can
874 if (share_conflict(&lck
->share_modes
[i
],
875 access_mask
, share_access
)) {
876 return NT_STATUS_SHARING_VIOLATION
;
883 static bool is_delete_request(files_struct
*fsp
) {
884 return ((fsp
->access_mask
== DELETE_ACCESS
) &&
885 (fsp
->oplock_type
== NO_OPLOCK
));
889 * Send a break message to the oplock holder and delay the open for
893 static NTSTATUS
send_break_message(files_struct
*fsp
,
894 struct share_mode_entry
*exclusive
,
899 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
901 DEBUG(10, ("Sending break request to PID %s\n",
902 procid_str_static(&exclusive
->pid
)));
903 exclusive
->op_mid
= mid
;
905 /* Create the message. */
906 share_mode_entry_to_message(msg
, exclusive
);
908 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
909 don't want this set in the share mode struct pointed to by lck. */
911 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
912 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
913 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
916 status
= messaging_send_buf(smbd_messaging_context(), exclusive
->pid
,
917 MSG_SMB_BREAK_REQUEST
,
919 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
920 if (!NT_STATUS_IS_OK(status
)) {
921 DEBUG(3, ("Could not send oplock break message: %s\n",
929 * 1) No files open at all or internal open: Grant whatever the client wants.
931 * 2) Exclusive (or batch) oplock around: If the requested access is a delete
932 * request, break if the oplock around is a batch oplock. If it's another
933 * requested access type, break.
935 * 3) Only level2 around: Grant level2 and do nothing else.
938 static bool delay_for_oplocks(struct share_mode_lock
*lck
,
945 struct share_mode_entry
*exclusive
= NULL
;
946 bool valid_entry
= false;
947 bool have_level2
= false;
948 bool have_a_none_oplock
= false;
949 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
950 lp_level2_oplocks(SNUM(fsp
->conn
));
952 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
953 fsp
->oplock_type
= NO_OPLOCK
;
956 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
960 for (i
=0; i
<lck
->num_share_modes
; i
++) {
962 if (!is_valid_share_mode_entry(&lck
->share_modes
[i
])) {
966 /* At least one entry is not an invalid or deferred entry. */
969 if (pass_number
== 1) {
970 if (BATCH_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
971 SMB_ASSERT(exclusive
== NULL
);
972 exclusive
= &lck
->share_modes
[i
];
975 if (EXCLUSIVE_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
976 SMB_ASSERT(exclusive
== NULL
);
977 exclusive
= &lck
->share_modes
[i
];
981 if (LEVEL_II_OPLOCK_TYPE(lck
->share_modes
[i
].op_type
)) {
982 SMB_ASSERT(exclusive
== NULL
);
986 if (lck
->share_modes
[i
].op_type
== NO_OPLOCK
) {
987 have_a_none_oplock
= true;
991 if (exclusive
!= NULL
) { /* Found an exclusive oplock */
992 bool delay_it
= is_delete_request(fsp
) ?
993 BATCH_OPLOCK_TYPE(exclusive
->op_type
) : true;
994 SMB_ASSERT(!have_level2
);
996 send_break_message(fsp
, exclusive
, mid
, oplock_request
);
1002 * Match what was requested (fsp->oplock_type) with
1003 * what was found in the existing share modes.
1007 /* All entries are placeholders or deferred.
1008 * Directly grant whatever the client wants. */
1009 if (fsp
->oplock_type
== NO_OPLOCK
) {
1010 /* Store a level2 oplock, but don't tell the client */
1011 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1013 } else if (have_a_none_oplock
) {
1014 fsp
->oplock_type
= NO_OPLOCK
;
1015 } else if (have_level2
) {
1016 if (fsp
->oplock_type
== NO_OPLOCK
||
1017 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1018 /* Store a level2 oplock, but don't tell the client */
1019 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1021 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1024 /* This case can never happen. */
1029 * Don't grant level2 to clients that don't want them
1030 * or if we've turned them off.
1032 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1033 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1036 DEBUG(10,("delay_for_oplocks: oplock type 0x%x on file %s\n",
1037 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1043 bool request_timed_out(struct timeval request_time
,
1044 struct timeval timeout
)
1046 struct timeval now
, end_time
;
1048 end_time
= timeval_sum(&request_time
, &timeout
);
1049 return (timeval_compare(&end_time
, &now
) < 0);
1052 /****************************************************************************
1053 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1054 ****************************************************************************/
1056 static void defer_open(struct share_mode_lock
*lck
,
1057 struct timeval request_time
,
1058 struct timeval timeout
,
1059 struct smb_request
*req
,
1060 struct deferred_open_record
*state
)
1064 /* Paranoia check */
1066 for (i
=0; i
<lck
->num_share_modes
; i
++) {
1067 struct share_mode_entry
*e
= &lck
->share_modes
[i
];
1069 if (!is_deferred_open_entry(e
)) {
1073 if (procid_is_me(&e
->pid
) && (e
->op_mid
== req
->mid
)) {
1074 DEBUG(0, ("Trying to defer an already deferred "
1075 "request: mid=%llu, exiting\n",
1076 (unsigned long long)req
->mid
));
1077 exit_server("attempt to defer a deferred request");
1081 /* End paranoia check */
1083 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1084 "open entry for mid %llu\n",
1085 (unsigned int)request_time
.tv_sec
,
1086 (unsigned int)request_time
.tv_usec
,
1087 (unsigned long long)req
->mid
));
1089 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1090 state
->id
, (char *)state
, sizeof(*state
))) {
1091 exit_server("push_deferred_open_message_smb failed");
1093 add_deferred_open(lck
, req
->mid
, request_time
, state
->id
);
1097 /****************************************************************************
1098 On overwrite open ensure that the attributes match.
1099 ****************************************************************************/
1101 bool open_match_attributes(connection_struct
*conn
,
1102 uint32 old_dos_attr
,
1103 uint32 new_dos_attr
,
1104 mode_t existing_unx_mode
,
1105 mode_t new_unx_mode
,
1106 mode_t
*returned_unx_mode
)
1108 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1110 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1111 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1113 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1114 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1115 *returned_unx_mode
= new_unx_mode
;
1117 *returned_unx_mode
= (mode_t
)0;
1120 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1121 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1122 "returned_unx_mode = 0%o\n",
1123 (unsigned int)old_dos_attr
,
1124 (unsigned int)existing_unx_mode
,
1125 (unsigned int)new_dos_attr
,
1126 (unsigned int)*returned_unx_mode
));
1128 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1129 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1130 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1131 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1135 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1136 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1137 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1144 /****************************************************************************
1145 Special FCB or DOS processing in the case of a sharing violation.
1146 Try and find a duplicated file handle.
1147 ****************************************************************************/
1149 NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1150 connection_struct
*conn
,
1151 files_struct
*fsp_to_dup_into
,
1152 const struct smb_filename
*smb_fname
,
1157 uint32 share_access
,
1158 uint32 create_options
)
1162 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1163 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1165 for(fsp
= file_find_di_first(id
); fsp
;
1166 fsp
= file_find_di_next(fsp
)) {
1168 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1169 "vuid = %u, file_pid = %u, private_options = 0x%x "
1170 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1171 fsp
->fh
->fd
, (unsigned int)fsp
->vuid
,
1172 (unsigned int)fsp
->file_pid
,
1173 (unsigned int)fsp
->fh
->private_options
,
1174 (unsigned int)fsp
->access_mask
));
1176 if (fsp
->fh
->fd
!= -1 &&
1177 fsp
->vuid
== vuid
&&
1178 fsp
->file_pid
== file_pid
&&
1179 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1180 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1181 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1182 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1183 strequal(fsp
->fsp_name
->stream_name
,
1184 smb_fname
->stream_name
)) {
1185 DEBUG(10,("fcb_or_dos_open: file match\n"));
1191 return NT_STATUS_NOT_FOUND
;
1194 /* quite an insane set of semantics ... */
1195 if (is_executable(smb_fname
->base_name
) &&
1196 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1197 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1198 return NT_STATUS_INVALID_PARAMETER
;
1201 /* We need to duplicate this fsp. */
1202 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1203 create_options
, fsp_to_dup_into
);
1206 /****************************************************************************
1207 Open a file with a share mode - old openX method - map into NTCreate.
1208 ****************************************************************************/
1210 bool map_open_params_to_ntcreate(const struct smb_filename
*smb_fname
,
1211 int deny_mode
, int open_func
,
1212 uint32
*paccess_mask
,
1213 uint32
*pshare_mode
,
1214 uint32
*pcreate_disposition
,
1215 uint32
*pcreate_options
,
1216 uint32_t *pprivate_flags
)
1220 uint32 create_disposition
;
1221 uint32 create_options
= FILE_NON_DIRECTORY_FILE
;
1222 uint32_t private_flags
= 0;
1224 DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
1225 "open_func = 0x%x\n",
1226 smb_fname_str_dbg(smb_fname
), (unsigned int)deny_mode
,
1227 (unsigned int)open_func
));
1229 /* Create the NT compatible access_mask. */
1230 switch (GET_OPENX_MODE(deny_mode
)) {
1231 case DOS_OPEN_EXEC
: /* Implies read-only - used to be FILE_READ_DATA */
1232 case DOS_OPEN_RDONLY
:
1233 access_mask
= FILE_GENERIC_READ
;
1235 case DOS_OPEN_WRONLY
:
1236 access_mask
= FILE_GENERIC_WRITE
;
1240 access_mask
= FILE_GENERIC_READ
|FILE_GENERIC_WRITE
;
1243 DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
1244 (unsigned int)GET_OPENX_MODE(deny_mode
)));
1248 /* Create the NT compatible create_disposition. */
1249 switch (open_func
) {
1250 case OPENX_FILE_EXISTS_FAIL
|OPENX_FILE_CREATE_IF_NOT_EXIST
:
1251 create_disposition
= FILE_CREATE
;
1254 case OPENX_FILE_EXISTS_OPEN
:
1255 create_disposition
= FILE_OPEN
;
1258 case OPENX_FILE_EXISTS_OPEN
|OPENX_FILE_CREATE_IF_NOT_EXIST
:
1259 create_disposition
= FILE_OPEN_IF
;
1262 case OPENX_FILE_EXISTS_TRUNCATE
:
1263 create_disposition
= FILE_OVERWRITE
;
1266 case OPENX_FILE_EXISTS_TRUNCATE
|OPENX_FILE_CREATE_IF_NOT_EXIST
:
1267 create_disposition
= FILE_OVERWRITE_IF
;
1271 /* From samba4 - to be confirmed. */
1272 if (GET_OPENX_MODE(deny_mode
) == DOS_OPEN_EXEC
) {
1273 create_disposition
= FILE_CREATE
;
1276 DEBUG(10,("map_open_params_to_ntcreate: bad "
1277 "open_func 0x%x\n", (unsigned int)open_func
));
1281 /* Create the NT compatible share modes. */
1282 switch (GET_DENY_MODE(deny_mode
)) {
1284 share_mode
= FILE_SHARE_NONE
;
1288 share_mode
= FILE_SHARE_READ
;
1292 share_mode
= FILE_SHARE_WRITE
;
1296 share_mode
= FILE_SHARE_READ
|FILE_SHARE_WRITE
;
1300 private_flags
|= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
;
1301 if (is_executable(smb_fname
->base_name
)) {
1302 share_mode
= FILE_SHARE_READ
|FILE_SHARE_WRITE
;
1304 if (GET_OPENX_MODE(deny_mode
) == DOS_OPEN_RDONLY
) {
1305 share_mode
= FILE_SHARE_READ
;
1307 share_mode
= FILE_SHARE_NONE
;
1313 private_flags
|= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
;
1314 share_mode
= FILE_SHARE_NONE
;
1318 DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
1319 (unsigned int)GET_DENY_MODE(deny_mode
) ));
1323 DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
1324 "share_mode = 0x%x, create_disposition = 0x%x, "
1325 "create_options = 0x%x private_flags = 0x%x\n",
1326 smb_fname_str_dbg(smb_fname
),
1327 (unsigned int)access_mask
,
1328 (unsigned int)share_mode
,
1329 (unsigned int)create_disposition
,
1330 (unsigned int)create_options
,
1331 (unsigned int)private_flags
));
1334 *paccess_mask
= access_mask
;
1337 *pshare_mode
= share_mode
;
1339 if (pcreate_disposition
) {
1340 *pcreate_disposition
= create_disposition
;
1342 if (pcreate_options
) {
1343 *pcreate_options
= create_options
;
1345 if (pprivate_flags
) {
1346 *pprivate_flags
= private_flags
;
1353 static void schedule_defer_open(struct share_mode_lock
*lck
,
1354 struct timeval request_time
,
1355 struct smb_request
*req
)
1357 struct deferred_open_record state
;
1359 /* This is a relative time, added to the absolute
1360 request_time value to get the absolute timeout time.
1361 Note that if this is the second or greater time we enter
1362 this codepath for this particular request mid then
1363 request_time is left as the absolute time of the *first*
1364 time this request mid was processed. This is what allows
1365 the request to eventually time out. */
1367 struct timeval timeout
;
1369 /* Normally the smbd we asked should respond within
1370 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1371 * the client did, give twice the timeout as a safety
1372 * measure here in case the other smbd is stuck
1373 * somewhere else. */
1375 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1377 /* Nothing actually uses state.delayed_for_oplocks
1378 but it's handy to differentiate in debug messages
1379 between a 30 second delay due to oplock break, and
1380 a 1 second delay for share mode conflicts. */
1382 state
.delayed_for_oplocks
= True
;
1385 if (!request_timed_out(request_time
, timeout
)) {
1386 defer_open(lck
, request_time
, timeout
, req
, &state
);
1390 /****************************************************************************
1391 Work out what access_mask to use from what the client sent us.
1392 ****************************************************************************/
1394 static NTSTATUS
calculate_access_mask(connection_struct
*conn
,
1395 const struct smb_filename
*smb_fname
,
1397 uint32_t access_mask
,
1398 uint32_t *access_mask_out
)
1403 * Convert GENERIC bits to specific bits.
1406 se_map_generic(&access_mask
, &file_generic_mapping
);
1408 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1409 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1412 struct security_descriptor
*sd
;
1413 uint32_t access_granted
= 0;
1415 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1420 if (!NT_STATUS_IS_OK(status
)) {
1421 DEBUG(10, ("calculate_access_mask: Could not get acl "
1423 smb_fname_str_dbg(smb_fname
),
1424 nt_errstr(status
)));
1425 return NT_STATUS_ACCESS_DENIED
;
1428 status
= smb1_file_se_access_check(conn
,
1430 get_current_nttok(conn
),
1436 if (!NT_STATUS_IS_OK(status
)) {
1437 DEBUG(10, ("calculate_access_mask: Access denied on "
1438 "file %s: when calculating maximum access\n",
1439 smb_fname_str_dbg(smb_fname
)));
1440 return NT_STATUS_ACCESS_DENIED
;
1443 access_mask
= access_granted
;
1445 access_mask
= FILE_GENERIC_ALL
;
1449 *access_mask_out
= access_mask
;
1450 return NT_STATUS_OK
;
1453 /****************************************************************************
1454 Remove the deferred open entry under lock.
1455 ****************************************************************************/
1457 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
)
1459 struct share_mode_lock
*lck
= get_share_mode_lock(talloc_tos(), id
,
1462 DEBUG(0, ("could not get share mode lock\n"));
1464 del_deferred_open_entry(lck
, mid
);
1469 /****************************************************************************
1470 Open a file with a share mode. Passed in an already created files_struct *.
1471 ****************************************************************************/
1473 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1474 struct smb_request
*req
,
1475 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1476 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1477 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1478 uint32 create_options
, /* options such as delete on close. */
1479 uint32 new_dos_attributes
, /* attributes used for new file. */
1480 int oplock_request
, /* internal Samba oplock codes. */
1481 /* Information (FILE_EXISTS etc.) */
1482 uint32_t private_flags
, /* Samba specific flags. */
1486 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1489 bool file_existed
= VALID_STAT(smb_fname
->st
);
1490 bool def_acl
= False
;
1491 bool posix_open
= False
;
1492 bool new_file_created
= False
;
1493 bool clear_ads
= false;
1495 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1496 mode_t new_unx_mode
= (mode_t
)0;
1497 mode_t unx_mode
= (mode_t
)0;
1499 uint32 existing_dos_attributes
= 0;
1500 struct timeval request_time
= timeval_zero();
1501 struct share_mode_lock
*lck
= NULL
;
1502 uint32 open_access_mask
= access_mask
;
1508 if (conn
->printer
) {
1510 * Printers are handled completely differently.
1511 * Most of the passed parameters are ignored.
1515 *pinfo
= FILE_WAS_CREATED
;
1518 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1519 smb_fname_str_dbg(smb_fname
)));
1522 DEBUG(0,("open_file_ntcreate: printer open without "
1523 "an SMB request!\n"));
1524 return NT_STATUS_INTERNAL_ERROR
;
1527 return print_fsp_open(req
, conn
, smb_fname
->base_name
,
1531 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1533 return NT_STATUS_NO_MEMORY
;
1536 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1538 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1539 new_dos_attributes
= 0;
1541 /* We add aARCH to this as this mode is only used if the file is
1543 unx_mode
= unix_mode(conn
, new_dos_attributes
| aARCH
,
1544 smb_fname
, parent_dir
);
1547 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1548 "access_mask=0x%x share_access=0x%x "
1549 "create_disposition = 0x%x create_options=0x%x "
1550 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1551 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1552 access_mask
, share_access
, create_disposition
,
1553 create_options
, (unsigned int)unx_mode
, oplock_request
,
1554 (unsigned int)private_flags
));
1556 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1557 DEBUG(0, ("No smb request but not an internal only open!\n"));
1558 return NT_STATUS_INTERNAL_ERROR
;
1562 * Only non-internal opens can be deferred at all
1567 if (get_deferred_open_message_state(req
,
1571 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1572 /* Remember the absolute time of the original
1573 request with this mid. We'll use it later to
1574 see if this has timed out. */
1576 /* Remove the deferred open entry under lock. */
1577 remove_deferred_open_entry(state
->id
, req
->mid
);
1579 /* Ensure we don't reprocess this message. */
1580 remove_deferred_open_message_smb(req
->mid
);
1584 status
= check_name(conn
, smb_fname
->base_name
);
1585 if (!NT_STATUS_IS_OK(status
)) {
1590 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
1592 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
1596 /* ignore any oplock requests if oplocks are disabled */
1597 if (!lp_oplocks(SNUM(conn
)) ||
1598 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
1599 /* Mask off everything except the private Samba bits. */
1600 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
1603 /* this is for OS/2 long file names - say we don't support them */
1604 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
1605 /* OS/2 Workplace shell fix may be main code stream in a later
1607 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1609 if (use_nt_status()) {
1610 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1612 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
1615 switch( create_disposition
) {
1617 * Currently we're using FILE_SUPERSEDE as the same as
1618 * FILE_OVERWRITE_IF but they really are
1619 * different. FILE_SUPERSEDE deletes an existing file
1620 * (requiring delete access) then recreates it.
1622 case FILE_SUPERSEDE
:
1623 /* If file exists replace/overwrite. If file doesn't
1625 flags2
|= (O_CREAT
| O_TRUNC
);
1629 case FILE_OVERWRITE_IF
:
1630 /* If file exists replace/overwrite. If file doesn't
1632 flags2
|= (O_CREAT
| O_TRUNC
);
1637 /* If file exists open. If file doesn't exist error. */
1638 if (!file_existed
) {
1639 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1640 "requested for file %s and file "
1642 smb_fname_str_dbg(smb_fname
)));
1644 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1648 case FILE_OVERWRITE
:
1649 /* If file exists overwrite. If file doesn't exist
1651 if (!file_existed
) {
1652 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1653 "requested for file %s and file "
1655 smb_fname_str_dbg(smb_fname
) ));
1657 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
1664 /* If file exists error. If file doesn't exist
1667 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1668 "requested for file %s and file "
1669 "already exists.\n",
1670 smb_fname_str_dbg(smb_fname
)));
1671 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
1676 return map_nt_error_from_unix(errno
);
1678 flags2
|= (O_CREAT
|O_EXCL
);
1682 /* If file exists open. If file doesn't exist
1688 return NT_STATUS_INVALID_PARAMETER
;
1691 /* We only care about matching attributes on file exists and
1694 if (!posix_open
&& file_existed
&& ((create_disposition
== FILE_OVERWRITE
) ||
1695 (create_disposition
== FILE_OVERWRITE_IF
))) {
1696 if (!open_match_attributes(conn
, existing_dos_attributes
,
1698 smb_fname
->st
.st_ex_mode
,
1699 unx_mode
, &new_unx_mode
)) {
1700 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1701 "for file %s (%x %x) (0%o, 0%o)\n",
1702 smb_fname_str_dbg(smb_fname
),
1703 existing_dos_attributes
,
1705 (unsigned int)smb_fname
->st
.st_ex_mode
,
1706 (unsigned int)unx_mode
));
1708 return NT_STATUS_ACCESS_DENIED
;
1712 status
= calculate_access_mask(conn
, smb_fname
, file_existed
,
1715 if (!NT_STATUS_IS_OK(status
)) {
1716 DEBUG(10, ("open_file_ntcreate: calculate_access_mask "
1717 "on file %s returned %s\n",
1718 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
1722 open_access_mask
= access_mask
;
1724 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
1725 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
1728 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1729 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
1733 * Note that we ignore the append flag as append does not
1734 * mean the same thing under DOS and Unix.
1737 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
1738 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
1739 /* DENY_DOS opens are always underlying read-write on the
1740 file handle, no matter what the requested access mask
1742 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
1743 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|FILE_READ_EA
|FILE_EXECUTE
)) {
1753 * Currently we only look at FILE_WRITE_THROUGH for create options.
1757 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
1762 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
1766 if (!posix_open
&& !CAN_WRITE(conn
)) {
1768 * We should really return a permission denied error if either
1769 * O_CREAT or O_TRUNC are set, but for compatibility with
1770 * older versions of Samba we just AND them out.
1772 flags2
&= ~(O_CREAT
|O_TRUNC
);
1776 * Ensure we can't write on a read-only share or file.
1779 if (flags
!= O_RDONLY
&& file_existed
&&
1780 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
1781 DEBUG(5,("open_file_ntcreate: write access requested for "
1782 "file %s on read only %s\n",
1783 smb_fname_str_dbg(smb_fname
),
1784 !CAN_WRITE(conn
) ? "share" : "file" ));
1786 return NT_STATUS_ACCESS_DENIED
;
1789 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
1790 fsp
->share_access
= share_access
;
1791 fsp
->fh
->private_options
= private_flags
;
1792 fsp
->access_mask
= open_access_mask
; /* We change this to the
1793 * requested access_mask after
1794 * the open is done. */
1795 fsp
->posix_open
= posix_open
;
1797 /* Ensure no SAMBA_PRIVATE bits can be set. */
1798 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1800 if (timeval_is_zero(&request_time
)) {
1801 request_time
= fsp
->open_time
;
1805 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
1806 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
1808 lck
= get_share_mode_lock(talloc_tos(), id
,
1810 smb_fname
, &old_write_time
);
1813 DEBUG(0, ("Could not get share mode lock\n"));
1814 return NT_STATUS_SHARING_VIOLATION
;
1817 /* First pass - send break only on batch oplocks. */
1819 && delay_for_oplocks(lck
, fsp
, req
->mid
, 1,
1821 schedule_defer_open(lck
, request_time
, req
);
1823 return NT_STATUS_SHARING_VIOLATION
;
1826 /* Use the client requested access mask here, not the one we
1828 status
= open_mode_check(conn
, lck
, access_mask
, share_access
,
1829 create_options
, &file_existed
);
1831 if (NT_STATUS_IS_OK(status
)) {
1832 /* We might be going to allow this open. Check oplock
1834 /* Second pass - send break for both batch or
1835 * exclusive oplocks. */
1837 && delay_for_oplocks(lck
, fsp
, req
->mid
, 2,
1839 schedule_defer_open(lck
, request_time
, req
);
1841 return NT_STATUS_SHARING_VIOLATION
;
1845 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
1846 /* DELETE_PENDING is not deferred for a second */
1851 if (!NT_STATUS_IS_OK(status
)) {
1852 uint32 can_access_mask
;
1853 bool can_access
= True
;
1855 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
1857 /* Check if this can be done with the deny_dos and fcb
1860 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1861 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
1863 DEBUG(0, ("DOS open without an SMB "
1866 return NT_STATUS_INTERNAL_ERROR
;
1869 /* Use the client requested access mask here,
1870 * not the one we open with. */
1871 status
= fcb_or_dos_open(req
,
1882 if (NT_STATUS_IS_OK(status
)) {
1885 *pinfo
= FILE_WAS_OPENED
;
1887 return NT_STATUS_OK
;
1892 * This next line is a subtlety we need for
1893 * MS-Access. If a file open will fail due to share
1894 * permissions and also for security (access) reasons,
1895 * we need to return the access failed error, not the
1896 * share error. We can't open the file due to kernel
1897 * oplock deadlock (it's possible we failed above on
1898 * the open_mode_check()) so use a userspace check.
1901 if (flags
& O_RDWR
) {
1902 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
1903 } else if (flags
& O_WRONLY
) {
1904 can_access_mask
= FILE_WRITE_DATA
;
1906 can_access_mask
= FILE_READ_DATA
;
1909 if (((can_access_mask
& FILE_WRITE_DATA
) &&
1910 !CAN_WRITE(conn
)) ||
1911 !can_access_file_data(conn
, smb_fname
,
1917 * If we're returning a share violation, ensure we
1918 * cope with the braindead 1 second delay.
1921 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
1922 lp_defer_sharing_violations()) {
1923 struct timeval timeout
;
1924 struct deferred_open_record state
;
1927 /* this is a hack to speed up torture tests
1929 timeout_usecs
= lp_parm_int(SNUM(conn
),
1930 "smbd","sharedelay",
1931 SHARING_VIOLATION_USEC_WAIT
);
1933 /* This is a relative time, added to the absolute
1934 request_time value to get the absolute timeout time.
1935 Note that if this is the second or greater time we enter
1936 this codepath for this particular request mid then
1937 request_time is left as the absolute time of the *first*
1938 time this request mid was processed. This is what allows
1939 the request to eventually time out. */
1941 timeout
= timeval_set(0, timeout_usecs
);
1943 /* Nothing actually uses state.delayed_for_oplocks
1944 but it's handy to differentiate in debug messages
1945 between a 30 second delay due to oplock break, and
1946 a 1 second delay for share mode conflicts. */
1948 state
.delayed_for_oplocks
= False
;
1952 && !request_timed_out(request_time
,
1954 defer_open(lck
, request_time
, timeout
,
1962 * We have detected a sharing violation here
1963 * so return the correct error code
1965 status
= NT_STATUS_SHARING_VIOLATION
;
1967 status
= NT_STATUS_ACCESS_DENIED
;
1973 * We exit this block with the share entry *locked*.....
1977 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
1980 * Ensure we pay attention to default ACLs on directories if required.
1983 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
1984 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
1988 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
1989 "access_mask = 0x%x, open_access_mask = 0x%x\n",
1990 (unsigned int)flags
, (unsigned int)flags2
,
1991 (unsigned int)unx_mode
, (unsigned int)access_mask
,
1992 (unsigned int)open_access_mask
));
1995 * open_file strips any O_TRUNC flags itself.
1998 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
1999 flags
|flags2
, unx_mode
, access_mask
,
2002 if (!NT_STATUS_IS_OK(fsp_open
)) {
2009 if (!file_existed
) {
2010 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2012 * Deal with the race condition where two smbd's detect the
2013 * file doesn't exist and do the create at the same time. One
2014 * of them will win and set a share mode, the other (ie. this
2015 * one) should check if the requested share mode for this
2016 * create is allowed.
2020 * Now the file exists and fsp is successfully opened,
2021 * fsp->dev and fsp->inode are valid and should replace the
2022 * dev=0,inode=0 from a non existent file. Spotted by
2023 * Nadav Danieli <nadavd@exanet.com>. JRA.
2028 lck
= get_share_mode_lock(talloc_tos(), id
,
2030 smb_fname
, &old_write_time
);
2033 DEBUG(0, ("open_file_ntcreate: Could not get share "
2034 "mode lock for %s\n",
2035 smb_fname_str_dbg(smb_fname
)));
2037 return NT_STATUS_SHARING_VIOLATION
;
2040 /* First pass - send break only on batch oplocks. */
2042 && delay_for_oplocks(lck
, fsp
, req
->mid
, 1,
2044 schedule_defer_open(lck
, request_time
, req
);
2047 return NT_STATUS_SHARING_VIOLATION
;
2050 status
= open_mode_check(conn
, lck
, access_mask
, share_access
,
2051 create_options
, &file_existed
);
2053 if (NT_STATUS_IS_OK(status
)) {
2054 /* We might be going to allow this open. Check oplock
2056 /* Second pass - send break for both batch or
2057 * exclusive oplocks. */
2059 && delay_for_oplocks(lck
, fsp
, req
->mid
, 2,
2061 schedule_defer_open(lck
, request_time
, req
);
2064 return NT_STATUS_SHARING_VIOLATION
;
2068 if (!NT_STATUS_IS_OK(status
)) {
2069 struct deferred_open_record state
;
2073 state
.delayed_for_oplocks
= False
;
2076 /* Do it all over again immediately. In the second
2077 * round we will find that the file existed and handle
2078 * the DELETE_PENDING and FCB cases correctly. No need
2079 * to duplicate the code here. Essentially this is a
2080 * "goto top of this function", but don't tell
2084 defer_open(lck
, request_time
, timeval_zero(),
2092 * We exit this block with the share entry *locked*.....
2097 SMB_ASSERT(lck
!= NULL
);
2099 /* Delete streams if create_disposition requires it */
2100 if (file_existed
&& clear_ads
&&
2101 !is_ntfs_stream_smb_fname(smb_fname
)) {
2102 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2103 if (!NT_STATUS_IS_OK(status
)) {
2110 /* note that we ignore failure for the following. It is
2111 basically a hack for NFS, and NFS will never set one of
2112 these only read them. Nobody but Samba can ever set a deny
2113 mode and we have already checked our more authoritative
2114 locking database for permission to set this deny mode. If
2115 the kernel refuses the operations then the kernel is wrong.
2116 note that GPFS supports it as well - jmcd */
2118 if (fsp
->fh
->fd
!= -1) {
2120 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2121 if(ret_flock
== -1 ){
2126 return NT_STATUS_SHARING_VIOLATION
;
2131 * At this point onwards, we can guarentee that the share entry
2132 * is locked, whether we created the file or not, and that the
2133 * deny mode is compatible with all current opens.
2137 * If requested, truncate the file.
2140 if (flags2
&O_TRUNC
) {
2142 * We are modifing the file after open - update the stat
2145 if ((SMB_VFS_FTRUNCATE(fsp
, 0) == -1) ||
2146 (SMB_VFS_FSTAT(fsp
, &smb_fname
->st
)==-1)) {
2147 status
= map_nt_error_from_unix(errno
);
2155 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2157 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2160 /* stat opens on existing files don't get oplocks. */
2161 if (is_stat_open(open_access_mask
)) {
2162 fsp
->oplock_type
= NO_OPLOCK
;
2165 if (!(flags2
& O_TRUNC
)) {
2166 info
= FILE_WAS_OPENED
;
2168 info
= FILE_WAS_OVERWRITTEN
;
2171 info
= FILE_WAS_CREATED
;
2179 * Setup the oplock info in both the shared memory and
2183 if (!set_file_oplock(fsp
, fsp
->oplock_type
)) {
2184 /* Could not get the kernel oplock */
2185 fsp
->oplock_type
= NO_OPLOCK
;
2188 if (info
== FILE_WAS_OVERWRITTEN
|| info
== FILE_WAS_CREATED
|| info
== FILE_WAS_SUPERSEDED
) {
2189 new_file_created
= True
;
2192 set_share_mode(lck
, fsp
, get_current_uid(conn
), 0,
2195 /* Handle strange delete on close create semantics. */
2196 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2198 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2200 if (!NT_STATUS_IS_OK(status
)) {
2201 /* Remember to delete the mode we just added. */
2202 del_share_mode(lck
, fsp
);
2207 /* Note that here we set the *inital* delete on close flag,
2208 not the regular one. The magic gets handled in close. */
2209 fsp
->initial_delete_on_close
= True
;
2212 if (new_file_created
) {
2213 /* Files should be initially set as archive */
2214 if (lp_map_archive(SNUM(conn
)) ||
2215 lp_store_dos_attributes(SNUM(conn
))) {
2217 if (file_set_dosmode(conn
, smb_fname
,
2218 new_dos_attributes
| aARCH
,
2219 parent_dir
, true) == 0) {
2220 unx_mode
= smb_fname
->st
.st_ex_mode
;
2227 * Take care of inherited ACLs on created files - if default ACL not
2231 if (!posix_open
&& !file_existed
&& !def_acl
) {
2233 int saved_errno
= errno
; /* We might get ENOSYS in the next
2236 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2238 errno
= saved_errno
; /* Ignore ENOSYS */
2241 } else if (new_unx_mode
) {
2245 /* Attributes need changing. File already existed. */
2248 int saved_errno
= errno
; /* We might get ENOSYS in the
2250 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2252 if (ret
== -1 && errno
== ENOSYS
) {
2253 errno
= saved_errno
; /* Ignore ENOSYS */
2255 DEBUG(5, ("open_file_ntcreate: reset "
2256 "attributes of file %s to 0%o\n",
2257 smb_fname_str_dbg(smb_fname
),
2258 (unsigned int)new_unx_mode
));
2259 ret
= 0; /* Don't do the fchmod below. */
2264 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2265 DEBUG(5, ("open_file_ntcreate: failed to reset "
2266 "attributes of file %s to 0%o\n",
2267 smb_fname_str_dbg(smb_fname
),
2268 (unsigned int)new_unx_mode
));
2271 /* If this is a successful open, we must remove any deferred open
2274 del_deferred_open_entry(lck
, req
->mid
);
2278 return NT_STATUS_OK
;
2282 /****************************************************************************
2283 Open a file for for write to ensure that we can fchmod it.
2284 ****************************************************************************/
2286 NTSTATUS
open_file_fchmod(struct smb_request
*req
, connection_struct
*conn
,
2287 struct smb_filename
*smb_fname
,
2288 files_struct
**result
)
2290 files_struct
*fsp
= NULL
;
2293 if (!VALID_STAT(smb_fname
->st
)) {
2294 return NT_STATUS_INVALID_PARAMETER
;
2297 status
= file_new(req
, conn
, &fsp
);
2298 if(!NT_STATUS_IS_OK(status
)) {
2302 status
= SMB_VFS_CREATE_FILE(
2305 0, /* root_dir_fid */
2306 smb_fname
, /* fname */
2307 FILE_WRITE_DATA
, /* access_mask */
2308 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2310 FILE_OPEN
, /* create_disposition*/
2311 0, /* create_options */
2312 0, /* file_attributes */
2313 0, /* oplock_request */
2314 0, /* allocation_size */
2315 0, /* private_flags */
2322 * This is not a user visible file open.
2323 * Don't set a share mode.
2326 if (!NT_STATUS_IS_OK(status
)) {
2327 file_free(req
, fsp
);
2332 return NT_STATUS_OK
;
2335 /****************************************************************************
2336 Close the fchmod file fd - ensure no locks are lost.
2337 ****************************************************************************/
2339 NTSTATUS
close_file_fchmod(struct smb_request
*req
, files_struct
*fsp
)
2341 NTSTATUS status
= fd_close(fsp
);
2342 file_free(req
, fsp
);
2346 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2347 struct smb_filename
*smb_dname
,
2348 uint32 file_attributes
)
2353 bool posix_open
= false;
2355 if(!CAN_WRITE(conn
)) {
2356 DEBUG(5,("mkdir_internal: failing create on read-only share "
2357 "%s\n", lp_servicename(SNUM(conn
))));
2358 return NT_STATUS_ACCESS_DENIED
;
2361 status
= check_name(conn
, smb_dname
->base_name
);
2362 if (!NT_STATUS_IS_OK(status
)) {
2366 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2368 return NT_STATUS_NO_MEMORY
;
2371 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2373 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2375 mode
= unix_mode(conn
, aDIR
, smb_dname
, parent_dir
);
2378 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2379 return map_nt_error_from_unix(errno
);
2382 /* Ensure we're checking for a symlink here.... */
2383 /* We don't want to get caught by a symlink racer. */
2385 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2386 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2387 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2388 return map_nt_error_from_unix(errno
);
2391 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2392 DEBUG(0, ("Directory just '%s' created is not a directory\n",
2393 smb_fname_str_dbg(smb_dname
)));
2394 return NT_STATUS_ACCESS_DENIED
;
2397 if (lp_store_dos_attributes(SNUM(conn
))) {
2399 file_set_dosmode(conn
, smb_dname
,
2400 file_attributes
| aDIR
,
2405 if (lp_inherit_perms(SNUM(conn
))) {
2406 inherit_access_posix_acl(conn
, parent_dir
,
2407 smb_dname
->base_name
, mode
);
2412 * Check if high bits should have been set,
2413 * then (if bits are missing): add them.
2414 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2417 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2418 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2419 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2420 (smb_dname
->st
.st_ex_mode
|
2421 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2425 /* Change the owner if required. */
2426 if (lp_inherit_owner(SNUM(conn
))) {
2427 change_dir_owner_to_parent(conn
, parent_dir
,
2428 smb_dname
->base_name
,
2432 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2433 smb_dname
->base_name
);
2435 return NT_STATUS_OK
;
2438 /****************************************************************************
2439 Open a directory from an NT SMB call.
2440 ****************************************************************************/
2442 static NTSTATUS
open_directory(connection_struct
*conn
,
2443 struct smb_request
*req
,
2444 struct smb_filename
*smb_dname
,
2446 uint32 share_access
,
2447 uint32 create_disposition
,
2448 uint32 create_options
,
2449 uint32 file_attributes
,
2451 files_struct
**result
)
2453 files_struct
*fsp
= NULL
;
2454 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2455 struct share_mode_lock
*lck
= NULL
;
2457 struct timespec mtimespec
;
2460 SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname
));
2462 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2463 "share_access = 0x%x create_options = 0x%x, "
2464 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2465 smb_fname_str_dbg(smb_dname
),
2466 (unsigned int)access_mask
,
2467 (unsigned int)share_access
,
2468 (unsigned int)create_options
,
2469 (unsigned int)create_disposition
,
2470 (unsigned int)file_attributes
));
2472 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
2473 (conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
2474 is_ntfs_stream_smb_fname(smb_dname
)) {
2475 DEBUG(2, ("open_directory: %s is a stream name!\n",
2476 smb_fname_str_dbg(smb_dname
)));
2477 return NT_STATUS_NOT_A_DIRECTORY
;
2480 status
= calculate_access_mask(conn
, smb_dname
, dir_existed
,
2481 access_mask
, &access_mask
);
2482 if (!NT_STATUS_IS_OK(status
)) {
2483 DEBUG(10, ("open_directory: calculate_access_mask "
2484 "on file %s returned %s\n",
2485 smb_fname_str_dbg(smb_dname
),
2486 nt_errstr(status
)));
2490 /* We need to support SeSecurityPrivilege for this. */
2491 if (access_mask
& SEC_FLAG_SYSTEM_SECURITY
) {
2492 DEBUG(10, ("open_directory: open on %s "
2493 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2494 smb_fname_str_dbg(smb_dname
)));
2495 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2498 switch( create_disposition
) {
2501 info
= FILE_WAS_OPENED
;
2504 * We want to follow symlinks here.
2507 if (SMB_VFS_STAT(conn
, smb_dname
) != 0) {
2508 return map_nt_error_from_unix(errno
);
2515 /* If directory exists error. If directory doesn't
2518 status
= mkdir_internal(conn
, smb_dname
,
2521 if (!NT_STATUS_IS_OK(status
)) {
2522 DEBUG(2, ("open_directory: unable to create "
2523 "%s. Error was %s\n",
2524 smb_fname_str_dbg(smb_dname
),
2525 nt_errstr(status
)));
2529 info
= FILE_WAS_CREATED
;
2534 * If directory exists open. If directory doesn't
2538 status
= mkdir_internal(conn
, smb_dname
,
2541 if (NT_STATUS_IS_OK(status
)) {
2542 info
= FILE_WAS_CREATED
;
2545 if (NT_STATUS_EQUAL(status
,
2546 NT_STATUS_OBJECT_NAME_COLLISION
)) {
2547 info
= FILE_WAS_OPENED
;
2548 status
= NT_STATUS_OK
;
2553 case FILE_SUPERSEDE
:
2554 case FILE_OVERWRITE
:
2555 case FILE_OVERWRITE_IF
:
2557 DEBUG(5,("open_directory: invalid create_disposition "
2558 "0x%x for directory %s\n",
2559 (unsigned int)create_disposition
,
2560 smb_fname_str_dbg(smb_dname
)));
2561 return NT_STATUS_INVALID_PARAMETER
;
2564 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2565 DEBUG(5,("open_directory: %s is not a directory !\n",
2566 smb_fname_str_dbg(smb_dname
)));
2567 return NT_STATUS_NOT_A_DIRECTORY
;
2570 if (info
== FILE_WAS_OPENED
) {
2571 uint32_t access_granted
= 0;
2572 status
= smbd_check_open_rights(conn
, smb_dname
, access_mask
,
2575 /* Were we trying to do a directory open
2576 * for delete and didn't get DELETE
2577 * access (only) ? Check if the
2578 * directory allows DELETE_CHILD.
2580 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
2583 if ((NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
2584 (access_mask
& DELETE_ACCESS
) &&
2585 (access_granted
== DELETE_ACCESS
) &&
2586 can_delete_file_in_directory(conn
, smb_dname
))) {
2587 DEBUG(10,("open_directory: overrode ACCESS_DENIED "
2588 "on directory %s\n",
2589 smb_fname_str_dbg(smb_dname
)));
2590 status
= NT_STATUS_OK
;
2593 if (!NT_STATUS_IS_OK(status
)) {
2594 DEBUG(10, ("open_directory: smbd_check_open_rights on "
2595 "file %s failed with %s\n",
2596 smb_fname_str_dbg(smb_dname
),
2597 nt_errstr(status
)));
2602 status
= file_new(req
, conn
, &fsp
);
2603 if(!NT_STATUS_IS_OK(status
)) {
2608 * Setup the files_struct for it.
2611 fsp
->mode
= smb_dname
->st
.st_ex_mode
;
2612 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
2613 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
2614 fsp
->file_pid
= req
? req
->smbpid
: 0;
2615 fsp
->can_lock
= False
;
2616 fsp
->can_read
= False
;
2617 fsp
->can_write
= False
;
2619 fsp
->share_access
= share_access
;
2620 fsp
->fh
->private_options
= 0;
2622 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2624 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2625 fsp
->print_file
= NULL
;
2626 fsp
->modified
= False
;
2627 fsp
->oplock_type
= NO_OPLOCK
;
2628 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
2629 fsp
->is_directory
= True
;
2630 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
2631 status
= fsp_set_smb_fname(fsp
, smb_dname
);
2632 if (!NT_STATUS_IS_OK(status
)) {
2636 mtimespec
= smb_dname
->st
.st_ex_mtime
;
2638 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
2639 conn
->connectpath
, smb_dname
, &mtimespec
);
2642 DEBUG(0, ("open_directory: Could not get share mode lock for "
2643 "%s\n", smb_fname_str_dbg(smb_dname
)));
2644 file_free(req
, fsp
);
2645 return NT_STATUS_SHARING_VIOLATION
;
2648 status
= open_mode_check(conn
, lck
, access_mask
, share_access
,
2649 create_options
, &dir_existed
);
2651 if (!NT_STATUS_IS_OK(status
)) {
2653 file_free(req
, fsp
);
2657 set_share_mode(lck
, fsp
, get_current_uid(conn
), 0, NO_OPLOCK
);
2659 /* For directories the delete on close bit at open time seems
2660 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2661 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2662 status
= can_set_delete_on_close(fsp
, 0);
2663 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
2665 file_free(req
, fsp
);
2669 if (NT_STATUS_IS_OK(status
)) {
2670 /* Note that here we set the *inital* delete on close flag,
2671 not the regular one. The magic gets handled in close. */
2672 fsp
->initial_delete_on_close
= True
;
2683 return NT_STATUS_OK
;
2686 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
2687 struct smb_filename
*smb_dname
)
2692 status
= SMB_VFS_CREATE_FILE(
2695 0, /* root_dir_fid */
2696 smb_dname
, /* fname */
2697 FILE_READ_ATTRIBUTES
, /* access_mask */
2698 FILE_SHARE_NONE
, /* share_access */
2699 FILE_CREATE
, /* create_disposition*/
2700 FILE_DIRECTORY_FILE
, /* create_options */
2701 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
2702 0, /* oplock_request */
2703 0, /* allocation_size */
2704 0, /* private_flags */
2710 if (NT_STATUS_IS_OK(status
)) {
2711 close_file(req
, fsp
, NORMAL_CLOSE
);
2717 /****************************************************************************
2718 Receive notification that one of our open files has been renamed by another
2720 ****************************************************************************/
2722 void msg_file_was_renamed(struct messaging_context
*msg
,
2725 struct server_id server_id
,
2729 char *frm
= (char *)data
->data
;
2731 const char *sharepath
;
2732 const char *base_name
;
2733 const char *stream_name
;
2734 struct smb_filename
*smb_fname
= NULL
;
2735 size_t sp_len
, bn_len
;
2738 if (data
->data
== NULL
2739 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
2740 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
2741 (int)data
->length
));
2745 /* Unpack the message. */
2746 pull_file_id_24(frm
, &id
);
2747 sharepath
= &frm
[24];
2748 sp_len
= strlen(sharepath
);
2749 base_name
= sharepath
+ sp_len
+ 1;
2750 bn_len
= strlen(base_name
);
2751 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
2753 /* stream_name must always be NULL if there is no stream. */
2754 if (stream_name
[0] == '\0') {
2758 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
2759 stream_name
, NULL
, &smb_fname
);
2760 if (!NT_STATUS_IS_OK(status
)) {
2764 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
2766 sharepath
, smb_fname_str_dbg(smb_fname
),
2767 file_id_string_tos(&id
)));
2769 for(fsp
= file_find_di_first(id
); fsp
; fsp
= file_find_di_next(fsp
)) {
2770 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
2772 DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
2773 fsp
->fnum
, fsp_str_dbg(fsp
),
2774 smb_fname_str_dbg(smb_fname
)));
2775 status
= fsp_set_smb_fname(fsp
, smb_fname
);
2776 if (!NT_STATUS_IS_OK(status
)) {
2781 /* Now we have the complete path we can work out if this is
2782 actually within this share and adjust newname accordingly. */
2783 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
2784 "not sharepath %s) "
2785 "fnum %d from %s -> %s\n",
2786 fsp
->conn
->connectpath
,
2790 smb_fname_str_dbg(smb_fname
)));
2794 TALLOC_FREE(smb_fname
);
2799 * If a main file is opened for delete, all streams need to be checked for
2800 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
2801 * If that works, delete them all by setting the delete on close and close.
2804 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
2807 struct stream_struct
*stream_info
;
2808 files_struct
**streams
;
2810 unsigned int num_streams
;
2811 TALLOC_CTX
*frame
= talloc_stackframe();
2814 status
= SMB_VFS_STREAMINFO(conn
, NULL
, fname
, talloc_tos(),
2815 &num_streams
, &stream_info
);
2817 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
2818 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
2819 DEBUG(10, ("no streams around\n"));
2821 return NT_STATUS_OK
;
2824 if (!NT_STATUS_IS_OK(status
)) {
2825 DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
2826 nt_errstr(status
)));
2830 DEBUG(10, ("open_streams_for_delete found %d streams\n",
2833 if (num_streams
== 0) {
2835 return NT_STATUS_OK
;
2838 streams
= TALLOC_ARRAY(talloc_tos(), files_struct
*, num_streams
);
2839 if (streams
== NULL
) {
2840 DEBUG(0, ("talloc failed\n"));
2841 status
= NT_STATUS_NO_MEMORY
;
2845 for (i
=0; i
<num_streams
; i
++) {
2846 struct smb_filename
*smb_fname
= NULL
;
2848 if (strequal(stream_info
[i
].name
, "::$DATA")) {
2853 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
2854 stream_info
[i
].name
,
2856 if (!NT_STATUS_IS_OK(status
)) {
2860 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
2861 DEBUG(10, ("Unable to stat stream: %s\n",
2862 smb_fname_str_dbg(smb_fname
)));
2865 status
= SMB_VFS_CREATE_FILE(
2868 0, /* root_dir_fid */
2869 smb_fname
, /* fname */
2870 DELETE_ACCESS
, /* access_mask */
2871 (FILE_SHARE_READ
| /* share_access */
2872 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
2873 FILE_OPEN
, /* create_disposition*/
2874 0, /* create_options */
2875 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
2876 0, /* oplock_request */
2877 0, /* allocation_size */
2878 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
2881 &streams
[i
], /* result */
2884 if (!NT_STATUS_IS_OK(status
)) {
2885 DEBUG(10, ("Could not open stream %s: %s\n",
2886 smb_fname_str_dbg(smb_fname
),
2887 nt_errstr(status
)));
2889 TALLOC_FREE(smb_fname
);
2892 TALLOC_FREE(smb_fname
);
2896 * don't touch the variable "status" beyond this point :-)
2899 for (i
-= 1 ; i
>= 0; i
--) {
2900 if (streams
[i
] == NULL
) {
2904 DEBUG(10, ("Closing stream # %d, %s\n", i
,
2905 fsp_str_dbg(streams
[i
])));
2906 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
2915 * Wrapper around open_file_ntcreate and open_directory
2918 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
2919 struct smb_request
*req
,
2920 struct smb_filename
*smb_fname
,
2921 uint32_t access_mask
,
2922 uint32_t share_access
,
2923 uint32_t create_disposition
,
2924 uint32_t create_options
,
2925 uint32_t file_attributes
,
2926 uint32_t oplock_request
,
2927 uint64_t allocation_size
,
2928 uint32_t private_flags
,
2929 struct security_descriptor
*sd
,
2930 struct ea_list
*ea_list
,
2932 files_struct
**result
,
2935 int info
= FILE_WAS_OPENED
;
2936 files_struct
*base_fsp
= NULL
;
2937 files_struct
*fsp
= NULL
;
2940 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
2941 "file_attributes = 0x%x, share_access = 0x%x, "
2942 "create_disposition = 0x%x create_options = 0x%x "
2943 "oplock_request = 0x%x private_flags = 0x%x "
2944 "ea_list = 0x%p, sd = 0x%p, "
2946 (unsigned int)access_mask
,
2947 (unsigned int)file_attributes
,
2948 (unsigned int)share_access
,
2949 (unsigned int)create_disposition
,
2950 (unsigned int)create_options
,
2951 (unsigned int)oplock_request
,
2952 (unsigned int)private_flags
,
2953 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
2955 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
2956 status
= NT_STATUS_NOT_SUPPORTED
;
2960 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
2961 status
= NT_STATUS_INVALID_PARAMETER
;
2966 oplock_request
|= INTERNAL_OPEN_ONLY
;
2969 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
2970 && (access_mask
& DELETE_ACCESS
)
2971 && !is_ntfs_stream_smb_fname(smb_fname
)) {
2973 * We can't open a file with DELETE access if any of the
2974 * streams is open without FILE_SHARE_DELETE
2976 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
2978 if (!NT_STATUS_IS_OK(status
)) {
2983 /* This is the correct thing to do (check every time) but can_delete
2984 * is expensive (it may have to read the parent directory
2985 * permissions). So for now we're not doing it unless we have a strong
2986 * hint the client is really going to delete this file. If the client
2987 * is forcing FILE_CREATE let the filesystem take care of the
2990 /* Setting FILE_SHARE_DELETE is the hint. */
2992 if (lp_acl_check_permissions(SNUM(conn
))
2993 && (create_disposition
!= FILE_CREATE
)
2994 && (share_access
& FILE_SHARE_DELETE
)
2995 && (access_mask
& DELETE_ACCESS
)
2996 && (!(can_delete_file_in_directory(conn
, smb_fname
) ||
2997 can_access_file_acl(conn
, smb_fname
, DELETE_ACCESS
)))) {
2998 status
= NT_STATUS_ACCESS_DENIED
;
2999 DEBUG(10,("create_file_unixpath: open file %s "
3000 "for delete ACCESS_DENIED\n",
3001 smb_fname_str_dbg(smb_fname
)));
3006 /* We need to support SeSecurityPrivilege for this. */
3007 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3008 !user_has_privileges(current_user
.nt_user_token
,
3010 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3014 /* We need to support SeSecurityPrivilege for this. */
3015 if (access_mask
& SEC_FLAG_SYSTEM_SECURITY
) {
3016 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3019 /* Don't allow a SACL set from an NTtrans create until we
3020 * support SeSecurityPrivilege. */
3021 if (!VALID_STAT(smb_fname
->st
) &&
3022 lp_nt_acl_support(SNUM(conn
)) &&
3023 sd
&& (sd
->sacl
!= NULL
)) {
3024 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3029 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3030 && is_ntfs_stream_smb_fname(smb_fname
)
3031 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3032 uint32 base_create_disposition
;
3033 struct smb_filename
*smb_fname_base
= NULL
;
3035 if (create_options
& FILE_DIRECTORY_FILE
) {
3036 status
= NT_STATUS_NOT_A_DIRECTORY
;
3040 switch (create_disposition
) {
3042 base_create_disposition
= FILE_OPEN
;
3045 base_create_disposition
= FILE_OPEN_IF
;
3049 /* Create an smb_filename with stream_name == NULL. */
3050 status
= create_synthetic_smb_fname(talloc_tos(),
3051 smb_fname
->base_name
,
3054 if (!NT_STATUS_IS_OK(status
)) {
3058 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3059 DEBUG(10, ("Unable to stat stream: %s\n",
3060 smb_fname_str_dbg(smb_fname_base
)));
3063 /* Open the base file. */
3064 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3067 | FILE_SHARE_DELETE
,
3068 base_create_disposition
,
3069 0, 0, 0, 0, 0, NULL
, NULL
,
3071 TALLOC_FREE(smb_fname_base
);
3073 if (!NT_STATUS_IS_OK(status
)) {
3074 DEBUG(10, ("create_file_unixpath for base %s failed: "
3075 "%s\n", smb_fname
->base_name
,
3076 nt_errstr(status
)));
3079 /* we don't need to low level fd */
3084 * If it's a request for a directory open, deal with it separately.
3087 if (create_options
& FILE_DIRECTORY_FILE
) {
3089 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3090 status
= NT_STATUS_INVALID_PARAMETER
;
3094 /* Can't open a temp directory. IFS kit test. */
3095 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3096 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3097 status
= NT_STATUS_INVALID_PARAMETER
;
3102 * We will get a create directory here if the Win32
3103 * app specified a security descriptor in the
3104 * CreateDirectory() call.
3108 status
= open_directory(
3109 conn
, req
, smb_fname
, access_mask
, share_access
,
3110 create_disposition
, create_options
, file_attributes
,
3115 * Ordinary file case.
3118 status
= file_new(req
, conn
, &fsp
);
3119 if(!NT_STATUS_IS_OK(status
)) {
3123 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3124 if (!NT_STATUS_IS_OK(status
)) {
3129 * We're opening the stream element of a base_fsp
3130 * we already opened. Set up the base_fsp pointer.
3133 fsp
->base_fsp
= base_fsp
;
3136 status
= open_file_ntcreate(conn
,
3148 if(!NT_STATUS_IS_OK(status
)) {
3149 file_free(req
, fsp
);
3153 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3155 /* A stream open never opens a directory */
3158 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3163 * Fail the open if it was explicitly a non-directory
3167 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3168 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3173 status
= open_directory(
3174 conn
, req
, smb_fname
, access_mask
,
3175 share_access
, create_disposition
,
3176 create_options
, file_attributes
,
3181 if (!NT_STATUS_IS_OK(status
)) {
3185 fsp
->base_fsp
= base_fsp
;
3188 * According to the MS documentation, the only time the security
3189 * descriptor is applied to the opened file is iff we *created* the
3190 * file; an existing file stays the same.
3192 * Also, it seems (from observation) that you can open the file with
3193 * any access mask but you can still write the sd. We need to override
3194 * the granted access before we call set_sd
3195 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3198 if ((sd
!= NULL
) && (info
== FILE_WAS_CREATED
)
3199 && lp_nt_acl_support(SNUM(conn
))) {
3201 uint32_t sec_info_sent
;
3202 uint32_t saved_access_mask
= fsp
->access_mask
;
3204 sec_info_sent
= get_sec_info(sd
);
3206 fsp
->access_mask
= FILE_GENERIC_ALL
;
3208 /* Convert all the generic bits. */
3209 security_acl_map_generic(sd
->dacl
, &file_generic_mapping
);
3210 security_acl_map_generic(sd
->sacl
, &file_generic_mapping
);
3212 if (sec_info_sent
& (SECINFO_OWNER
|
3216 status
= SMB_VFS_FSET_NT_ACL(fsp
, sec_info_sent
, sd
);
3219 fsp
->access_mask
= saved_access_mask
;
3221 if (!NT_STATUS_IS_OK(status
)) {
3226 if ((ea_list
!= NULL
) &&
3227 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3228 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3229 if (!NT_STATUS_IS_OK(status
)) {
3234 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3235 status
= NT_STATUS_ACCESS_DENIED
;
3239 /* Save the requested allocation size. */
3240 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3242 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3243 fsp
->initial_allocation_size
= smb_roundup(
3244 fsp
->conn
, allocation_size
);
3245 if (fsp
->is_directory
) {
3246 /* Can't set allocation size on a directory. */
3247 status
= NT_STATUS_ACCESS_DENIED
;
3250 if (vfs_allocate_file_space(
3251 fsp
, fsp
->initial_allocation_size
) == -1) {
3252 status
= NT_STATUS_DISK_FULL
;
3256 fsp
->initial_allocation_size
= smb_roundup(
3257 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3261 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3264 if (pinfo
!= NULL
) {
3268 smb_fname
->st
= fsp
->fsp_name
->st
;
3270 return NT_STATUS_OK
;
3273 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3276 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3278 * The close_file below will close
3283 close_file(req
, fsp
, ERROR_CLOSE
);
3286 if (base_fsp
!= NULL
) {
3287 close_file(req
, base_fsp
, ERROR_CLOSE
);
3294 * Calculate the full path name given a relative fid.
3296 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3297 struct smb_request
*req
,
3298 uint16_t root_dir_fid
,
3299 struct smb_filename
*smb_fname
)
3301 files_struct
*dir_fsp
;
3302 char *parent_fname
= NULL
;
3303 char *new_base_name
= NULL
;
3306 if (root_dir_fid
== 0 || !smb_fname
) {
3307 status
= NT_STATUS_INTERNAL_ERROR
;
3311 dir_fsp
= file_fsp(req
, root_dir_fid
);
3313 if (dir_fsp
== NULL
) {
3314 status
= NT_STATUS_INVALID_HANDLE
;
3318 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3319 status
= NT_STATUS_INVALID_HANDLE
;
3323 if (!dir_fsp
->is_directory
) {
3326 * Check to see if this is a mac fork of some kind.
3329 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3330 is_ntfs_stream_smb_fname(smb_fname
)) {
3331 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3336 we need to handle the case when we get a
3337 relative open relative to a file and the
3338 pathname is blank - this is a reopen!
3339 (hint from demyn plantenberg)
3342 status
= NT_STATUS_INVALID_HANDLE
;
3346 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3348 * We're at the toplevel dir, the final file name
3349 * must not contain ./, as this is filtered out
3350 * normally by srvstr_get_path and unix_convert
3351 * explicitly rejects paths containing ./.
3353 parent_fname
= talloc_strdup(talloc_tos(), "");
3354 if (parent_fname
== NULL
) {
3355 status
= NT_STATUS_NO_MEMORY
;
3359 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3362 * Copy in the base directory name.
3365 parent_fname
= TALLOC_ARRAY(talloc_tos(), char,
3367 if (parent_fname
== NULL
) {
3368 status
= NT_STATUS_NO_MEMORY
;
3371 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3375 * Ensure it ends in a '/'.
3376 * We used TALLOC_SIZE +2 to add space for the '/'.
3380 && (parent_fname
[dir_name_len
-1] != '\\')
3381 && (parent_fname
[dir_name_len
-1] != '/')) {
3382 parent_fname
[dir_name_len
] = '/';
3383 parent_fname
[dir_name_len
+1] = '\0';
3387 new_base_name
= talloc_asprintf(smb_fname
, "%s%s", parent_fname
,
3388 smb_fname
->base_name
);
3389 if (new_base_name
== NULL
) {
3390 status
= NT_STATUS_NO_MEMORY
;
3394 TALLOC_FREE(smb_fname
->base_name
);
3395 smb_fname
->base_name
= new_base_name
;
3396 status
= NT_STATUS_OK
;
3399 TALLOC_FREE(parent_fname
);
3403 NTSTATUS
create_file_default(connection_struct
*conn
,
3404 struct smb_request
*req
,
3405 uint16_t root_dir_fid
,
3406 struct smb_filename
*smb_fname
,
3407 uint32_t access_mask
,
3408 uint32_t share_access
,
3409 uint32_t create_disposition
,
3410 uint32_t create_options
,
3411 uint32_t file_attributes
,
3412 uint32_t oplock_request
,
3413 uint64_t allocation_size
,
3414 uint32_t private_flags
,
3415 struct security_descriptor
*sd
,
3416 struct ea_list
*ea_list
,
3417 files_struct
**result
,
3420 int info
= FILE_WAS_OPENED
;
3421 files_struct
*fsp
= NULL
;
3423 bool stream_name
= false;
3425 DEBUG(10,("create_file: access_mask = 0x%x "
3426 "file_attributes = 0x%x, share_access = 0x%x, "
3427 "create_disposition = 0x%x create_options = 0x%x "
3428 "oplock_request = 0x%x "
3429 "private_flags = 0x%x "
3430 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3432 (unsigned int)access_mask
,
3433 (unsigned int)file_attributes
,
3434 (unsigned int)share_access
,
3435 (unsigned int)create_disposition
,
3436 (unsigned int)create_options
,
3437 (unsigned int)oplock_request
,
3438 (unsigned int)private_flags
,
3439 (unsigned int)root_dir_fid
,
3440 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3443 * Calculate the filename from the root_dir_if if necessary.
3446 if (root_dir_fid
!= 0) {
3447 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
3449 if (!NT_STATUS_IS_OK(status
)) {
3455 * Check to see if this is a mac fork of some kind.
3458 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
3460 enum FAKE_FILE_TYPE fake_file_type
;
3462 fake_file_type
= is_fake_file(smb_fname
);
3464 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
3467 * Here we go! support for changing the disk quotas
3470 * We need to fake up to open this MAGIC QUOTA file
3471 * and return a valid FID.
3473 * w2k close this file directly after openening xp
3474 * also tries a QUERY_FILE_INFO on the file and then
3477 status
= open_fake_file(req
, conn
, req
->vuid
,
3478 fake_file_type
, smb_fname
,
3480 if (!NT_STATUS_IS_OK(status
)) {
3484 ZERO_STRUCT(smb_fname
->st
);
3488 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
3489 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
3494 /* All file access must go through check_name() */
3496 status
= check_name(conn
, smb_fname
->base_name
);
3497 if (!NT_STATUS_IS_OK(status
)) {
3501 if (stream_name
&& is_ntfs_default_stream_smb_fname(smb_fname
)) {
3503 smb_fname
->stream_name
= NULL
;
3504 /* We have to handle this error here. */
3505 if (create_options
& FILE_DIRECTORY_FILE
) {
3506 status
= NT_STATUS_NOT_A_DIRECTORY
;
3509 if (lp_posix_pathnames()) {
3510 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
3512 ret
= SMB_VFS_STAT(conn
, smb_fname
);
3515 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
3516 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3521 status
= create_file_unixpath(
3522 conn
, req
, smb_fname
, access_mask
, share_access
,
3523 create_disposition
, create_options
, file_attributes
,
3524 oplock_request
, allocation_size
, private_flags
,
3528 if (!NT_STATUS_IS_OK(status
)) {
3533 DEBUG(10, ("create_file: info=%d\n", info
));
3536 if (pinfo
!= NULL
) {
3539 return NT_STATUS_OK
;
3542 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
3545 close_file(req
, fsp
, ERROR_CLOSE
);