2 Unix SMB/CIFS implementation.
3 file opening and share modes
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2004
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/filesys.h"
25 #include "smbd/smbd.h"
26 #include "smbd/globals.h"
27 #include "fake_file.h"
28 #include "../libcli/security/security.h"
29 #include "../librpc/gen_ndr/ndr_security.h"
30 #include "../librpc/gen_ndr/open_files.h"
35 extern const struct generic_mapping file_generic_mapping
;
37 struct deferred_open_record
{
38 bool delayed_for_oplocks
;
43 /****************************************************************************
44 If the requester wanted DELETE_ACCESS and was rejected because
45 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
47 ****************************************************************************/
49 static bool parent_override_delete(connection_struct
*conn
,
50 const struct smb_filename
*smb_fname
,
52 uint32_t rejected_mask
)
54 if ((access_mask
& DELETE_ACCESS
) &&
55 (rejected_mask
& DELETE_ACCESS
) &&
56 can_delete_file_in_directory(conn
, smb_fname
)) {
62 /****************************************************************************
63 Check if we have open rights.
64 ****************************************************************************/
66 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
67 const struct smb_filename
*smb_fname
,
71 /* Check if we have rights to open. */
73 struct security_descriptor
*sd
= NULL
;
74 uint32_t rejected_share_access
;
75 uint32_t rejected_mask
= access_mask
;
77 rejected_share_access
= access_mask
& ~(conn
->share_access
);
79 if (rejected_share_access
) {
80 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
82 (unsigned int)access_mask
,
83 smb_fname_str_dbg(smb_fname
),
84 (unsigned int)rejected_share_access
));
85 return NT_STATUS_ACCESS_DENIED
;
88 if (!use_privs
&& get_current_uid(conn
) == (uid_t
)0) {
89 /* I'm sorry sir, I didn't know you were root... */
90 DEBUG(10,("smbd_check_access_rights: root override "
91 "on %s. Granting 0x%x\n",
92 smb_fname_str_dbg(smb_fname
),
93 (unsigned int)access_mask
));
97 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
98 DEBUG(10,("smbd_check_access_rights: not checking ACL "
99 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
100 smb_fname_str_dbg(smb_fname
),
101 (unsigned int)access_mask
));
105 if (access_mask
== DELETE_ACCESS
&&
106 VALID_STAT(smb_fname
->st
) &&
107 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
108 /* We can always delete a symlink. */
109 DEBUG(10,("smbd_check_access_rights: not checking ACL "
110 "on DELETE_ACCESS on symlink %s.\n",
111 smb_fname_str_dbg(smb_fname
) ));
115 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
120 if (!NT_STATUS_IS_OK(status
)) {
121 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
123 smb_fname_str_dbg(smb_fname
),
126 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
134 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
135 * owner WRITE_DAC and READ_CONTROL.
137 status
= se_file_access_check(sd
,
138 get_current_nttok(conn
),
140 (access_mask
& ~FILE_READ_ATTRIBUTES
),
143 DEBUG(10,("smbd_check_access_rights: file %s requesting "
144 "0x%x returning 0x%x (%s)\n",
145 smb_fname_str_dbg(smb_fname
),
146 (unsigned int)access_mask
,
147 (unsigned int)rejected_mask
,
148 nt_errstr(status
) ));
150 if (!NT_STATUS_IS_OK(status
)) {
151 if (DEBUGLEVEL
>= 10) {
152 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
153 smb_fname_str_dbg(smb_fname
) ));
154 NDR_PRINT_DEBUG(security_descriptor
, sd
);
160 if (NT_STATUS_IS_OK(status
) ||
161 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
165 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
169 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
170 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
171 !lp_store_dos_attributes(SNUM(conn
)) &&
172 (lp_map_readonly(SNUM(conn
)) ||
173 lp_map_archive(SNUM(conn
)) ||
174 lp_map_hidden(SNUM(conn
)) ||
175 lp_map_system(SNUM(conn
)))) {
176 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
178 DEBUG(10,("smbd_check_access_rights: "
180 "FILE_WRITE_ATTRIBUTES "
182 smb_fname_str_dbg(smb_fname
)));
185 if (parent_override_delete(conn
,
189 /* Were we trying to do an open
190 * for delete and didn't get DELETE
191 * access (only) ? Check if the
192 * directory allows DELETE_CHILD.
194 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
197 rejected_mask
&= ~DELETE_ACCESS
;
199 DEBUG(10,("smbd_check_access_rights: "
203 smb_fname_str_dbg(smb_fname
)));
206 if (rejected_mask
!= 0) {
207 return NT_STATUS_ACCESS_DENIED
;
212 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
213 struct smb_filename
*smb_fname
,
214 uint32_t access_mask
)
217 char *parent_dir
= NULL
;
218 struct security_descriptor
*parent_sd
= NULL
;
219 uint32_t access_granted
= 0;
221 if (!parent_dirname(talloc_tos(),
222 smb_fname
->base_name
,
225 return NT_STATUS_NO_MEMORY
;
228 if (get_current_uid(conn
) == (uid_t
)0) {
229 /* I'm sorry sir, I didn't know you were root... */
230 DEBUG(10,("check_parent_access: root override "
231 "on %s. Granting 0x%x\n",
232 smb_fname_str_dbg(smb_fname
),
233 (unsigned int)access_mask
));
237 status
= SMB_VFS_GET_NT_ACL(conn
,
242 if (!NT_STATUS_IS_OK(status
)) {
243 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
244 "%s with error %s\n",
251 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
252 * owner WRITE_DAC and READ_CONTROL.
254 status
= se_file_access_check(parent_sd
,
255 get_current_nttok(conn
),
257 (access_mask
& ~FILE_READ_ATTRIBUTES
),
259 if(!NT_STATUS_IS_OK(status
)) {
260 DEBUG(5,("check_parent_access: access check "
261 "on directory %s for "
262 "path %s for mask 0x%x returned (0x%x) %s\n",
264 smb_fname
->base_name
,
267 nt_errstr(status
) ));
274 /****************************************************************************
275 fd support routines - attempt to do a dos_open.
276 ****************************************************************************/
278 NTSTATUS
fd_open(struct connection_struct
*conn
,
283 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
284 NTSTATUS status
= NT_STATUS_OK
;
288 * Never follow symlinks on a POSIX client. The
289 * client should be doing this.
292 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
297 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
298 if (fsp
->fh
->fd
== -1) {
299 int posix_errno
= errno
;
301 #if defined(ENOTSUP) && defined(OSF1)
302 /* handle special Tru64 errno */
303 if (errno
== ENOTSUP
) {
308 /* fix broken NetBSD errno */
309 if (errno
== EFTYPE
) {
313 /* fix broken FreeBSD errno */
314 if (errno
== EMLINK
) {
317 #endif /* O_NOFOLLOW */
318 status
= map_nt_error_from_unix(posix_errno
);
319 if (errno
== EMFILE
) {
320 static time_t last_warned
= 0L;
322 if (time((time_t *) NULL
) > last_warned
) {
323 DEBUG(0,("Too many open files, unable "
324 "to open more! smbd's max "
326 lp_max_open_files()));
327 last_warned
= time((time_t *) NULL
);
333 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
334 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
335 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
340 /****************************************************************************
341 Close the file associated with a fsp.
342 ****************************************************************************/
344 NTSTATUS
fd_close(files_struct
*fsp
)
351 if (fsp
->fh
->fd
== -1) {
352 return NT_STATUS_OK
; /* What we used to call a stat open. */
354 if (fsp
->fh
->ref_count
> 1) {
355 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
358 ret
= SMB_VFS_CLOSE(fsp
);
361 return map_nt_error_from_unix(errno
);
366 /****************************************************************************
367 Change the ownership of a file to that of the parent directory.
368 Do this by fd if possible.
369 ****************************************************************************/
371 void change_file_owner_to_parent(connection_struct
*conn
,
372 const char *inherit_from_dir
,
375 struct smb_filename
*smb_fname_parent
= NULL
;
379 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
380 NULL
, NULL
, &smb_fname_parent
);
381 if (!NT_STATUS_IS_OK(status
)) {
385 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
387 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
388 "directory %s. Error was %s\n",
389 smb_fname_str_dbg(smb_fname_parent
),
391 TALLOC_FREE(smb_fname_parent
);
395 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
396 /* Already this uid - no need to change. */
397 DEBUG(10,("change_file_owner_to_parent: file %s "
398 "is already owned by uid %d\n",
400 (int)fsp
->fsp_name
->st
.st_ex_uid
));
401 TALLOC_FREE(smb_fname_parent
);
406 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
409 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
410 "file %s to parent directory uid %u. Error "
411 "was %s\n", fsp_str_dbg(fsp
),
412 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
415 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
416 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
417 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
418 /* Ensure the uid entry is updated. */
419 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
422 TALLOC_FREE(smb_fname_parent
);
425 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
426 const char *inherit_from_dir
,
428 SMB_STRUCT_STAT
*psbuf
)
430 struct smb_filename
*smb_fname_parent
= NULL
;
431 struct smb_filename
*smb_fname_cwd
= NULL
;
432 char *saved_dir
= NULL
;
433 TALLOC_CTX
*ctx
= talloc_tos();
434 NTSTATUS status
= NT_STATUS_OK
;
437 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
439 if (!NT_STATUS_IS_OK(status
)) {
443 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
445 status
= map_nt_error_from_unix(errno
);
446 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
447 "directory %s. Error was %s\n",
448 smb_fname_str_dbg(smb_fname_parent
),
453 /* We've already done an lstat into psbuf, and we know it's a
454 directory. If we can cd into the directory and the dev/ino
455 are the same then we can safely chown without races as
456 we're locking the directory in place by being in it. This
457 should work on any UNIX (thanks tridge :-). JRA.
460 saved_dir
= vfs_GetWd(ctx
,conn
);
462 status
= map_nt_error_from_unix(errno
);
463 DEBUG(0,("change_dir_owner_to_parent: failed to get "
464 "current working directory. Error was %s\n",
469 /* Chdir into the new path. */
470 if (vfs_ChDir(conn
, fname
) == -1) {
471 status
= map_nt_error_from_unix(errno
);
472 DEBUG(0,("change_dir_owner_to_parent: failed to change "
473 "current working directory to %s. Error "
474 "was %s\n", fname
, strerror(errno
) ));
478 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
480 if (!NT_STATUS_IS_OK(status
)) {
484 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
486 status
= map_nt_error_from_unix(errno
);
487 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
488 "directory '.' (%s) Error was %s\n",
489 fname
, strerror(errno
)));
493 /* Ensure we're pointing at the same place. */
494 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
495 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
496 DEBUG(0,("change_dir_owner_to_parent: "
497 "device/inode on directory %s changed. "
498 "Refusing to chown !\n", fname
));
499 status
= NT_STATUS_ACCESS_DENIED
;
503 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
504 /* Already this uid - no need to change. */
505 DEBUG(10,("change_dir_owner_to_parent: directory %s "
506 "is already owned by uid %d\n",
508 (int)smb_fname_cwd
->st
.st_ex_uid
));
509 status
= NT_STATUS_OK
;
514 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
518 status
= map_nt_error_from_unix(errno
);
519 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
520 "directory %s to parent directory uid %u. "
521 "Error was %s\n", fname
,
522 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
525 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
526 "directory %s to parent directory uid %u.\n",
527 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
528 /* Ensure the uid entry is updated. */
529 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
533 vfs_ChDir(conn
,saved_dir
);
535 TALLOC_FREE(smb_fname_parent
);
536 TALLOC_FREE(smb_fname_cwd
);
540 /****************************************************************************
541 Open a file - returning a guaranteed ATOMIC indication of if the
542 file was created or not.
543 ****************************************************************************/
545 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
551 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
552 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
554 *file_created
= false;
556 if (!(flags
& O_CREAT
)) {
558 * We're not creating the file, just pass through.
560 return fd_open(conn
, fsp
, flags
, mode
);
563 if (flags
& O_EXCL
) {
565 * Fail if already exists, just pass through.
567 status
= fd_open(conn
, fsp
, flags
, mode
);
570 * Here we've opened with O_CREAT|O_EXCL. If that went
571 * NT_STATUS_OK, we *know* we created this file.
573 *file_created
= NT_STATUS_IS_OK(status
);
579 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
580 * To know absolutely if we created the file or not,
581 * we can never call O_CREAT without O_EXCL. So if
582 * we think the file existed, try without O_CREAT|O_EXCL.
583 * If we think the file didn't exist, try with
584 * O_CREAT|O_EXCL. Keep bouncing between these two
585 * requests until either the file is created, or
586 * opened. Either way, we keep going until we get
587 * a returnable result (error, or open/create).
591 int curr_flags
= flags
;
594 /* Just try open, do not create. */
595 curr_flags
&= ~(O_CREAT
);
596 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
597 if (NT_STATUS_EQUAL(status
,
598 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
600 * Someone deleted it in the meantime.
603 file_existed
= false;
604 DEBUG(10,("fd_open_atomic: file %s existed. "
606 smb_fname_str_dbg(fsp
->fsp_name
)));
610 /* Try create exclusively, fail if it exists. */
611 curr_flags
|= O_EXCL
;
612 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
613 if (NT_STATUS_EQUAL(status
,
614 NT_STATUS_OBJECT_NAME_COLLISION
)) {
616 * Someone created it in the meantime.
617 * Retry without O_CREAT.
620 DEBUG(10,("fd_open_atomic: file %s "
621 "did not exist. Retry.\n",
622 smb_fname_str_dbg(fsp
->fsp_name
)));
625 if (NT_STATUS_IS_OK(status
)) {
627 * Here we've opened with O_CREAT|O_EXCL
628 * and got success. We *know* we created
631 *file_created
= true;
634 /* Create is done, or failed. */
640 /****************************************************************************
642 ****************************************************************************/
644 static NTSTATUS
open_file(files_struct
*fsp
,
645 connection_struct
*conn
,
646 struct smb_request
*req
,
647 const char *parent_dir
,
650 uint32 access_mask
, /* client requested access mask. */
651 uint32 open_access_mask
, /* what we're actually using in the open. */
652 bool *p_file_created
)
654 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
655 NTSTATUS status
= NT_STATUS_OK
;
656 int accmode
= (flags
& O_ACCMODE
);
657 int local_flags
= flags
;
658 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
663 /* Check permissions */
666 * This code was changed after seeing a client open request
667 * containing the open mode of (DENY_WRITE/read-only) with
668 * the 'create if not exist' bit set. The previous code
669 * would fail to open the file read only on a read-only share
670 * as it was checking the flags parameter directly against O_RDONLY,
671 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
675 if (!CAN_WRITE(conn
)) {
676 /* It's a read-only share - fail if we wanted to write. */
677 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
678 DEBUG(3,("Permission denied opening %s\n",
679 smb_fname_str_dbg(smb_fname
)));
680 return NT_STATUS_ACCESS_DENIED
;
681 } else if(flags
& O_CREAT
) {
682 /* We don't want to write - but we must make sure that
683 O_CREAT doesn't create the file if we have write
684 access into the directory.
686 flags
&= ~(O_CREAT
|O_EXCL
);
687 local_flags
&= ~(O_CREAT
|O_EXCL
);
692 * This little piece of insanity is inspired by the
693 * fact that an NT client can open a file for O_RDONLY,
694 * but set the create disposition to FILE_EXISTS_TRUNCATE.
695 * If the client *can* write to the file, then it expects to
696 * truncate the file, even though it is opening for readonly.
697 * Quicken uses this stupid trick in backup file creation...
698 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
699 * for helping track this one down. It didn't bite us in 2.0.x
700 * as we always opened files read-write in that release. JRA.
703 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
704 DEBUG(10,("open_file: truncate requested on read-only open "
705 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
706 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
709 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
710 (!file_existed
&& (local_flags
& O_CREAT
)) ||
711 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
715 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
717 * We would block on opening a FIFO with no one else on the
718 * other end. Do what we used to do and add O_NONBLOCK to the
722 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
723 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
724 local_flags
|= O_NONBLOCK
;
728 /* Don't create files with Microsoft wildcard characters. */
731 * wildcard characters are allowed in stream names
732 * only test the basefilename
734 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
736 wild
= smb_fname
->base_name
;
738 if ((local_flags
& O_CREAT
) && !file_existed
&&
740 return NT_STATUS_OBJECT_NAME_INVALID
;
743 /* Can we access this file ? */
744 if (!fsp
->base_fsp
) {
745 /* Only do this check on non-stream open. */
747 status
= smbd_check_access_rights(conn
,
751 } else if (local_flags
& O_CREAT
){
752 status
= check_parent_access(conn
,
756 /* File didn't exist and no O_CREAT. */
757 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
759 if (!NT_STATUS_IS_OK(status
)) {
760 DEBUG(10,("open_file: "
764 "smbd_check_access_rights" :
765 "check_parent_access",
766 smb_fname_str_dbg(smb_fname
),
767 nt_errstr(status
) ));
772 /* Actually do the open */
773 status
= fd_open_atomic(conn
, fsp
, local_flags
,
774 unx_mode
, p_file_created
);
775 if (!NT_STATUS_IS_OK(status
)) {
776 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
777 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
778 nt_errstr(status
),local_flags
,flags
));
782 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
784 /* If we have an fd, this stat should succeed. */
785 DEBUG(0,("Error doing fstat on open file %s "
787 smb_fname_str_dbg(smb_fname
),
789 status
= map_nt_error_from_unix(errno
);
794 if (*p_file_created
) {
795 /* We created this file. */
797 bool need_re_stat
= false;
798 /* Do all inheritance work after we've
799 done a successful fstat call and filled
800 in the stat struct in fsp->fsp_name. */
802 /* Inherit the ACL if required */
803 if (lp_inherit_perms(SNUM(conn
))) {
804 inherit_access_posix_acl(conn
, parent_dir
,
805 smb_fname
->base_name
,
810 /* Change the owner if required. */
811 if (lp_inherit_owner(SNUM(conn
))) {
812 change_file_owner_to_parent(conn
, parent_dir
,
818 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
819 /* If we have an fd, this stat should succeed. */
821 DEBUG(0,("Error doing fstat on open file %s "
823 smb_fname_str_dbg(smb_fname
),
828 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
829 FILE_NOTIFY_CHANGE_FILE_NAME
,
830 smb_fname
->base_name
);
833 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
835 /* File must exist for a stat open. */
836 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
839 status
= smbd_check_access_rights(conn
,
844 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
846 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
847 /* This is a POSIX stat open for delete
848 * or rename on a symlink that points
850 DEBUG(10,("open_file: allowing POSIX "
851 "open on bad symlink %s\n",
852 smb_fname_str_dbg(smb_fname
)));
853 status
= NT_STATUS_OK
;
856 if (!NT_STATUS_IS_OK(status
)) {
857 DEBUG(10,("open_file: "
858 "smbd_check_access_rights on file "
860 smb_fname_str_dbg(smb_fname
),
861 nt_errstr(status
) ));
867 * POSIX allows read-only opens of directories. We don't
868 * want to do this (we use a different code path for this)
869 * so catch a directory open and return an EISDIR. JRA.
872 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
875 return NT_STATUS_FILE_IS_A_DIRECTORY
;
878 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
879 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
880 fsp
->file_pid
= req
? req
->smbpid
: 0;
881 fsp
->can_lock
= True
;
882 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
885 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
886 fsp
->print_file
= NULL
;
887 fsp
->modified
= False
;
888 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
889 fsp
->is_directory
= False
;
890 if (conn
->aio_write_behind_list
&&
891 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
892 conn
->case_sensitive
)) {
893 fsp
->aio_write_behind
= True
;
896 fsp
->wcp
= NULL
; /* Write cache pointer. */
898 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
899 conn
->session_info
->unix_info
->unix_name
,
900 smb_fname_str_dbg(smb_fname
),
901 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
902 conn
->num_files_open
));
908 /****************************************************************************
909 Check if we can open a file with a share mode.
910 Returns True if conflict, False if not.
911 ****************************************************************************/
913 static bool share_conflict(struct share_mode_entry
*entry
,
917 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
918 "entry->share_access = 0x%x, "
919 "entry->private_options = 0x%x\n",
920 (unsigned int)entry
->access_mask
,
921 (unsigned int)entry
->share_access
,
922 (unsigned int)entry
->private_options
));
924 if (server_id_is_disconnected(&entry
->pid
)) {
926 * note: cleanup should have been done by
927 * delay_for_batch_oplocks()
932 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
933 (unsigned int)access_mask
, (unsigned int)share_access
));
935 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
939 DELETE_ACCESS
)) == 0) {
940 DEBUG(10,("share_conflict: No conflict due to "
941 "entry->access_mask = 0x%x\n",
942 (unsigned int)entry
->access_mask
));
946 if ((access_mask
& (FILE_WRITE_DATA
|
950 DELETE_ACCESS
)) == 0) {
951 DEBUG(10,("share_conflict: No conflict due to "
952 "access_mask = 0x%x\n",
953 (unsigned int)access_mask
));
957 #if 1 /* JRA TEST - Superdebug. */
958 #define CHECK_MASK(num, am, right, sa, share) \
959 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
960 (unsigned int)(num), (unsigned int)(am), \
961 (unsigned int)(right), (unsigned int)(am)&(right) )); \
962 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
963 (unsigned int)(num), (unsigned int)(sa), \
964 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
965 if (((am) & (right)) && !((sa) & (share))) { \
966 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
967 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
968 (unsigned int)(share) )); \
972 #define CHECK_MASK(num, am, right, sa, share) \
973 if (((am) & (right)) && !((sa) & (share))) { \
974 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
975 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
976 (unsigned int)(share) )); \
981 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
982 share_access
, FILE_SHARE_WRITE
);
983 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
984 entry
->share_access
, FILE_SHARE_WRITE
);
986 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
987 share_access
, FILE_SHARE_READ
);
988 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
989 entry
->share_access
, FILE_SHARE_READ
);
991 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
992 share_access
, FILE_SHARE_DELETE
);
993 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
994 entry
->share_access
, FILE_SHARE_DELETE
);
996 DEBUG(10,("share_conflict: No conflict.\n"));
1000 #if defined(DEVELOPER)
1001 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1003 struct share_mode_entry
*share_entry
)
1005 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1008 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1012 if (is_deferred_open_entry(share_entry
) &&
1013 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
1014 char *str
= talloc_asprintf(talloc_tos(),
1015 "Got a deferred entry without a request: "
1017 share_mode_str(talloc_tos(), num
, share_entry
));
1021 if (!is_valid_share_mode_entry(share_entry
)) {
1025 fsp
= file_find_dif(sconn
, share_entry
->id
,
1026 share_entry
->share_file_id
);
1028 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1029 share_mode_str(talloc_tos(), num
, share_entry
) ));
1030 smb_panic("validate_my_share_entries: Cannot match a "
1031 "share entry with an open file\n");
1034 if (is_deferred_open_entry(share_entry
)) {
1038 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1039 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
1040 /* Someone has already written to it, but I haven't yet
1045 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1054 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1055 share_mode_str(talloc_tos(), num
, share_entry
) ));
1056 str
= talloc_asprintf(talloc_tos(),
1057 "validate_my_share_entries: "
1058 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1059 fsp
->fsp_name
->base_name
,
1060 (unsigned int)fsp
->oplock_type
,
1061 (unsigned int)share_entry
->op_type
);
1067 bool is_stat_open(uint32 access_mask
)
1069 return (access_mask
&&
1070 ((access_mask
& ~(SYNCHRONIZE_ACCESS
| FILE_READ_ATTRIBUTES
|
1071 FILE_WRITE_ATTRIBUTES
))==0) &&
1072 ((access_mask
& (SYNCHRONIZE_ACCESS
|FILE_READ_ATTRIBUTES
|
1073 FILE_WRITE_ATTRIBUTES
)) != 0));
1076 /****************************************************************************
1077 Deal with share modes
1078 Invarient: Share mode must be locked on entry and exit.
1079 Returns -1 on error, or number of share modes on success (may be zero).
1080 ****************************************************************************/
1082 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1083 struct share_mode_lock
*lck
,
1086 uint32 share_access
,
1087 uint32 create_options
,
1092 if(lck
->data
->num_share_modes
== 0) {
1093 return NT_STATUS_OK
;
1096 /* A delete on close prohibits everything */
1098 if (is_delete_on_close_set(lck
, name_hash
)) {
1100 * Check the delete on close token
1101 * is valid. It could have been left
1102 * after a server crash.
1104 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1105 if (!share_mode_stale_pid(lck
->data
, i
)) {
1107 *file_existed
= true;
1109 return NT_STATUS_DELETE_PENDING
;
1112 return NT_STATUS_OK
;
1115 if (is_stat_open(access_mask
)) {
1116 /* Stat open that doesn't trigger oplock breaks or share mode
1117 * checks... ! JRA. */
1118 return NT_STATUS_OK
;
1122 * Check if the share modes will give us access.
1125 #if defined(DEVELOPER)
1126 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1127 validate_my_share_entries(conn
->sconn
, i
,
1128 &lck
->data
->share_modes
[i
]);
1132 /* Now we check the share modes, after any oplock breaks. */
1133 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1135 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1139 /* someone else has a share lock on it, check to see if we can
1141 if (share_conflict(&lck
->data
->share_modes
[i
],
1142 access_mask
, share_access
)) {
1144 if (share_mode_stale_pid(lck
->data
, i
)) {
1148 *file_existed
= true;
1150 return NT_STATUS_SHARING_VIOLATION
;
1154 if (lck
->data
->num_share_modes
!= 0) {
1155 *file_existed
= true;
1158 return NT_STATUS_OK
;
1162 * Send a break message to the oplock holder and delay the open for
1166 static NTSTATUS
send_break_message(files_struct
*fsp
,
1167 struct share_mode_entry
*exclusive
,
1172 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1174 DEBUG(10, ("Sending break request to PID %s\n",
1175 procid_str_static(&exclusive
->pid
)));
1176 exclusive
->op_mid
= mid
;
1178 /* Create the message. */
1179 share_mode_entry_to_message(msg
, exclusive
);
1181 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1182 don't want this set in the share mode struct pointed to by lck. */
1184 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1185 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1186 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1189 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1190 MSG_SMB_BREAK_REQUEST
,
1192 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1193 if (!NT_STATUS_IS_OK(status
)) {
1194 DEBUG(3, ("Could not send oplock break message: %s\n",
1195 nt_errstr(status
)));
1202 * Return share_mode_entry pointers for :
1203 * 1). Batch oplock entry.
1204 * 2). Batch or exclusive oplock entry (may be identical to #1).
1205 * bool have_level2_oplock
1206 * bool have_no_oplock.
1207 * Do internal consistency checks on the share mode for a file.
1210 static void find_oplock_types(files_struct
*fsp
,
1212 const struct share_mode_lock
*lck
,
1213 struct share_mode_entry
**pp_batch
,
1214 struct share_mode_entry
**pp_ex_or_batch
,
1216 bool *got_no_oplock
)
1221 *pp_ex_or_batch
= NULL
;
1222 *got_level2
= false;
1223 *got_no_oplock
= false;
1225 /* Ignore stat or internal opens, as is done in
1226 delay_for_batch_oplocks() and
1227 delay_for_exclusive_oplocks().
1229 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1233 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1234 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1238 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1239 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1240 /* We ignore stat opens in the table - they
1241 always have NO_OPLOCK and never get or
1242 cause breaks. JRA. */
1246 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1247 /* batch - can only be one. */
1248 if (share_mode_stale_pid(lck
->data
, i
)) {
1249 DEBUG(10, ("Found stale batch oplock\n"));
1252 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1253 smb_panic("Bad batch oplock entry.");
1255 *pp_batch
= &lck
->data
->share_modes
[i
];
1258 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1259 if (share_mode_stale_pid(lck
->data
, i
)) {
1260 DEBUG(10, ("Found stale duplicate oplock\n"));
1263 /* Exclusive or batch - can only be one. */
1264 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1265 smb_panic("Bad exclusive or batch oplock entry.");
1267 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1270 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1271 if (*pp_batch
|| *pp_ex_or_batch
) {
1272 if (share_mode_stale_pid(lck
->data
, i
)) {
1273 DEBUG(10, ("Found stale LevelII "
1277 smb_panic("Bad levelII oplock entry.");
1282 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1283 if (*pp_batch
|| *pp_ex_or_batch
) {
1284 if (share_mode_stale_pid(lck
->data
, i
)) {
1285 DEBUG(10, ("Found stale NO_OPLOCK "
1289 smb_panic("Bad no oplock entry.");
1291 *got_no_oplock
= true;
1296 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1299 struct share_mode_entry
*batch_entry
)
1301 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1304 if (batch_entry
== NULL
) {
1308 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1311 * This could be achieved by sending a break message
1312 * to ourselves. Special considerations for files
1313 * with delete_on_close flag set!
1315 * For now we keep it simple and do not
1316 * allow delete on close for durable handles.
1321 /* Found a batch oplock */
1322 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1326 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1329 struct share_mode_entry
*ex_entry
)
1331 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1334 if (ex_entry
== NULL
) {
1338 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1340 * since only durable handles can get disconnected,
1341 * and we can only get durable handles with batch oplocks,
1342 * this should actually never be reached...
1347 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1351 static bool file_has_brlocks(files_struct
*fsp
)
1353 struct byte_range_lock
*br_lck
;
1355 br_lck
= brl_get_locks_readonly(fsp
);
1359 return br_lck
->num_locks
> 0 ? true : false;
1362 static void grant_fsp_oplock_type(files_struct
*fsp
,
1364 bool got_level2_oplock
,
1365 bool got_a_none_oplock
)
1367 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1368 lp_level2_oplocks(SNUM(fsp
->conn
));
1370 /* Start by granting what the client asked for,
1371 but ensure no SAMBA_PRIVATE bits can be set. */
1372 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1374 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1375 /* No oplocks on internal open. */
1376 fsp
->oplock_type
= NO_OPLOCK
;
1377 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1378 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1382 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1383 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1385 fsp
->oplock_type
= NO_OPLOCK
;
1388 if (is_stat_open(fsp
->access_mask
)) {
1389 /* Leave the value already set. */
1390 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1391 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1396 * Match what was requested (fsp->oplock_type) with
1397 * what was found in the existing share modes.
1400 if (got_a_none_oplock
) {
1401 fsp
->oplock_type
= NO_OPLOCK
;
1402 } else if (got_level2_oplock
) {
1403 if (fsp
->oplock_type
== NO_OPLOCK
||
1404 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1405 /* Store a level2 oplock, but don't tell the client */
1406 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1408 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1411 /* All share_mode_entries are placeholders or deferred.
1412 * Silently upgrade to fake levelII if the client didn't
1413 * ask for an oplock. */
1414 if (fsp
->oplock_type
== NO_OPLOCK
) {
1415 /* Store a level2 oplock, but don't tell the client */
1416 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1421 * Don't grant level2 to clients that don't want them
1422 * or if we've turned them off.
1424 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1425 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1428 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1429 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1432 static bool request_timed_out(struct timeval request_time
,
1433 struct timeval timeout
)
1435 struct timeval now
, end_time
;
1437 end_time
= timeval_sum(&request_time
, &timeout
);
1438 return (timeval_compare(&end_time
, &now
) < 0);
1441 /****************************************************************************
1442 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1443 ****************************************************************************/
1445 static void defer_open(struct share_mode_lock
*lck
,
1446 struct timeval request_time
,
1447 struct timeval timeout
,
1448 struct smb_request
*req
,
1449 struct deferred_open_record
*state
)
1451 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1453 /* Paranoia check */
1458 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1459 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1461 if (is_deferred_open_entry(e
) &&
1462 serverid_equal(&self
, &e
->pid
) &&
1463 (e
->op_mid
== req
->mid
)) {
1464 DEBUG(0, ("Trying to defer an already deferred "
1465 "request: mid=%llu, exiting\n",
1466 (unsigned long long)req
->mid
));
1468 exit_server("attempt to defer a deferred request");
1473 /* End paranoia check */
1475 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1476 "open entry for mid %llu\n",
1477 (unsigned int)request_time
.tv_sec
,
1478 (unsigned int)request_time
.tv_usec
,
1479 (unsigned long long)req
->mid
));
1481 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1482 state
->id
, (char *)state
, sizeof(*state
))) {
1484 exit_server("push_deferred_open_message_smb failed");
1487 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1492 /****************************************************************************
1493 On overwrite open ensure that the attributes match.
1494 ****************************************************************************/
1496 static bool open_match_attributes(connection_struct
*conn
,
1497 uint32 old_dos_attr
,
1498 uint32 new_dos_attr
,
1499 mode_t existing_unx_mode
,
1500 mode_t new_unx_mode
,
1501 mode_t
*returned_unx_mode
)
1503 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1505 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1506 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1508 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1509 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1510 *returned_unx_mode
= new_unx_mode
;
1512 *returned_unx_mode
= (mode_t
)0;
1515 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1516 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1517 "returned_unx_mode = 0%o\n",
1518 (unsigned int)old_dos_attr
,
1519 (unsigned int)existing_unx_mode
,
1520 (unsigned int)new_dos_attr
,
1521 (unsigned int)*returned_unx_mode
));
1523 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1524 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1525 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1526 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1530 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1531 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1532 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1539 /****************************************************************************
1540 Special FCB or DOS processing in the case of a sharing violation.
1541 Try and find a duplicated file handle.
1542 ****************************************************************************/
1544 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1545 connection_struct
*conn
,
1546 files_struct
*fsp_to_dup_into
,
1547 const struct smb_filename
*smb_fname
,
1552 uint32 share_access
,
1553 uint32 create_options
)
1557 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1558 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1560 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1561 fsp
= file_find_di_next(fsp
)) {
1563 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1564 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1565 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1566 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1567 (unsigned int)fsp
->file_pid
,
1568 (unsigned int)fsp
->fh
->private_options
,
1569 (unsigned int)fsp
->access_mask
));
1571 if (fsp
->fh
->fd
!= -1 &&
1572 fsp
->vuid
== vuid
&&
1573 fsp
->file_pid
== file_pid
&&
1574 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1575 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1576 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1577 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1578 strequal(fsp
->fsp_name
->stream_name
,
1579 smb_fname
->stream_name
)) {
1580 DEBUG(10,("fcb_or_dos_open: file match\n"));
1586 return NT_STATUS_NOT_FOUND
;
1589 /* quite an insane set of semantics ... */
1590 if (is_executable(smb_fname
->base_name
) &&
1591 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1592 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1593 return NT_STATUS_INVALID_PARAMETER
;
1596 /* We need to duplicate this fsp. */
1597 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1598 create_options
, fsp_to_dup_into
);
1601 static void schedule_defer_open(struct share_mode_lock
*lck
,
1602 struct timeval request_time
,
1603 struct smb_request
*req
)
1605 struct deferred_open_record state
;
1607 /* This is a relative time, added to the absolute
1608 request_time value to get the absolute timeout time.
1609 Note that if this is the second or greater time we enter
1610 this codepath for this particular request mid then
1611 request_time is left as the absolute time of the *first*
1612 time this request mid was processed. This is what allows
1613 the request to eventually time out. */
1615 struct timeval timeout
;
1617 /* Normally the smbd we asked should respond within
1618 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1619 * the client did, give twice the timeout as a safety
1620 * measure here in case the other smbd is stuck
1621 * somewhere else. */
1623 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1625 /* Nothing actually uses state.delayed_for_oplocks
1626 but it's handy to differentiate in debug messages
1627 between a 30 second delay due to oplock break, and
1628 a 1 second delay for share mode conflicts. */
1630 state
.delayed_for_oplocks
= True
;
1631 state
.async_open
= false;
1632 state
.id
= lck
->data
->id
;
1634 if (!request_timed_out(request_time
, timeout
)) {
1635 defer_open(lck
, request_time
, timeout
, req
, &state
);
1639 /****************************************************************************
1640 Reschedule an open call that went asynchronous.
1641 ****************************************************************************/
1643 static void schedule_async_open(struct timeval request_time
,
1644 struct smb_request
*req
)
1646 struct deferred_open_record state
;
1647 struct timeval timeout
;
1649 timeout
= timeval_set(20, 0);
1652 state
.delayed_for_oplocks
= false;
1653 state
.async_open
= true;
1655 if (!request_timed_out(request_time
, timeout
)) {
1656 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1660 /****************************************************************************
1661 Work out what access_mask to use from what the client sent us.
1662 ****************************************************************************/
1664 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1665 connection_struct
*conn
,
1666 const struct smb_filename
*smb_fname
,
1668 uint32_t *p_access_mask
)
1670 struct security_descriptor
*sd
;
1671 uint32_t access_granted
;
1674 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1675 *p_access_mask
|= FILE_GENERIC_ALL
;
1676 return NT_STATUS_OK
;
1679 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1684 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1686 * File did not exist
1688 *p_access_mask
= FILE_GENERIC_ALL
;
1689 return NT_STATUS_OK
;
1691 if (!NT_STATUS_IS_OK(status
)) {
1692 DEBUG(10,("Could not get acl on file %s: %s\n",
1693 smb_fname_str_dbg(smb_fname
),
1694 nt_errstr(status
)));
1695 return NT_STATUS_ACCESS_DENIED
;
1699 * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
1700 * also takes care of owner WRITE_DAC and READ_CONTROL.
1702 status
= se_file_access_check(sd
,
1703 get_current_nttok(conn
),
1705 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1710 if (!NT_STATUS_IS_OK(status
)) {
1711 DEBUG(10, ("Access denied on file %s: "
1712 "when calculating maximum access\n",
1713 smb_fname_str_dbg(smb_fname
)));
1714 return NT_STATUS_ACCESS_DENIED
;
1716 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1718 if (!(access_granted
& DELETE_ACCESS
)) {
1719 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1720 *p_access_mask
|= DELETE_ACCESS
;
1724 return NT_STATUS_OK
;
1727 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1728 const struct smb_filename
*smb_fname
,
1730 uint32_t access_mask
,
1731 uint32_t *access_mask_out
)
1734 uint32_t orig_access_mask
= access_mask
;
1735 uint32_t rejected_share_access
;
1738 * Convert GENERIC bits to specific bits.
1741 se_map_generic(&access_mask
, &file_generic_mapping
);
1743 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1744 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1746 status
= smbd_calculate_maximum_allowed_access(
1747 conn
, smb_fname
, use_privs
, &access_mask
);
1749 if (!NT_STATUS_IS_OK(status
)) {
1753 access_mask
&= conn
->share_access
;
1756 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1758 if (rejected_share_access
) {
1759 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1760 "file %s: rejected by share access mask[0x%08X] "
1761 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1762 smb_fname_str_dbg(smb_fname
),
1764 orig_access_mask
, access_mask
,
1765 rejected_share_access
));
1766 return NT_STATUS_ACCESS_DENIED
;
1769 *access_mask_out
= access_mask
;
1770 return NT_STATUS_OK
;
1773 /****************************************************************************
1774 Remove the deferred open entry under lock.
1775 ****************************************************************************/
1777 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1778 struct server_id pid
)
1780 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1783 DEBUG(0, ("could not get share mode lock\n"));
1786 del_deferred_open_entry(lck
, mid
, pid
);
1790 /****************************************************************************
1791 Return true if this is a state pointer to an asynchronous create.
1792 ****************************************************************************/
1794 bool is_deferred_open_async(const void *ptr
)
1796 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1798 return state
->async_open
;
1801 static bool clear_ads(uint32_t create_disposition
)
1805 switch (create_disposition
) {
1806 case FILE_SUPERSEDE
:
1807 case FILE_OVERWRITE_IF
:
1808 case FILE_OVERWRITE
:
1817 static int disposition_to_open_flags(uint32_t create_disposition
)
1822 * Currently we're using FILE_SUPERSEDE as the same as
1823 * FILE_OVERWRITE_IF but they really are
1824 * different. FILE_SUPERSEDE deletes an existing file
1825 * (requiring delete access) then recreates it.
1828 switch (create_disposition
) {
1829 case FILE_SUPERSEDE
:
1830 case FILE_OVERWRITE_IF
:
1832 * If file exists replace/overwrite. If file doesn't
1835 ret
= O_CREAT
|O_TRUNC
;
1840 * If file exists open. If file doesn't exist error.
1845 case FILE_OVERWRITE
:
1847 * If file exists overwrite. If file doesn't exist
1855 * If file exists error. If file doesn't exist create.
1857 ret
= O_CREAT
|O_EXCL
;
1862 * If file exists open. If file doesn't exist create.
1870 /****************************************************************************
1871 Open a file with a share mode. Passed in an already created files_struct *.
1872 ****************************************************************************/
1874 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1875 struct smb_request
*req
,
1876 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1877 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1878 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1879 uint32 create_options
, /* options such as delete on close. */
1880 uint32 new_dos_attributes
, /* attributes used for new file. */
1881 int oplock_request
, /* internal Samba oplock codes. */
1882 /* Information (FILE_EXISTS etc.) */
1883 uint32_t private_flags
, /* Samba specific flags. */
1887 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1890 bool file_existed
= VALID_STAT(smb_fname
->st
);
1891 bool def_acl
= False
;
1892 bool posix_open
= False
;
1893 bool new_file_created
= False
;
1894 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1895 mode_t new_unx_mode
= (mode_t
)0;
1896 mode_t unx_mode
= (mode_t
)0;
1898 uint32 existing_dos_attributes
= 0;
1899 struct timeval request_time
= timeval_zero();
1900 struct share_mode_lock
*lck
= NULL
;
1901 uint32 open_access_mask
= access_mask
;
1904 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1906 if (conn
->printer
) {
1908 * Printers are handled completely differently.
1909 * Most of the passed parameters are ignored.
1913 *pinfo
= FILE_WAS_CREATED
;
1916 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1917 smb_fname_str_dbg(smb_fname
)));
1920 DEBUG(0,("open_file_ntcreate: printer open without "
1921 "an SMB request!\n"));
1922 return NT_STATUS_INTERNAL_ERROR
;
1925 return print_spool_open(fsp
, smb_fname
->base_name
,
1929 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1931 return NT_STATUS_NO_MEMORY
;
1934 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1936 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1937 new_dos_attributes
= 0;
1939 /* Windows allows a new file to be created and
1940 silently removes a FILE_ATTRIBUTE_DIRECTORY
1941 sent by the client. Do the same. */
1943 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1945 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1947 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1948 smb_fname
, parent_dir
);
1951 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1952 "access_mask=0x%x share_access=0x%x "
1953 "create_disposition = 0x%x create_options=0x%x "
1954 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1955 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1956 access_mask
, share_access
, create_disposition
,
1957 create_options
, (unsigned int)unx_mode
, oplock_request
,
1958 (unsigned int)private_flags
));
1960 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1961 DEBUG(0, ("No smb request but not an internal only open!\n"));
1962 return NT_STATUS_INTERNAL_ERROR
;
1966 * Only non-internal opens can be deferred at all
1971 if (get_deferred_open_message_state(req
,
1974 /* Remember the absolute time of the original
1975 request with this mid. We'll use it later to
1976 see if this has timed out. */
1978 /* If it was an async create retry, the file
1981 if (is_deferred_open_async(ptr
)) {
1982 SET_STAT_INVALID(smb_fname
->st
);
1983 file_existed
= false;
1985 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1986 /* Remove the deferred open entry under lock. */
1987 remove_deferred_open_entry(
1988 state
->id
, req
->mid
,
1989 messaging_server_id(req
->sconn
->msg_ctx
));
1992 /* Ensure we don't reprocess this message. */
1993 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
1998 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2000 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2004 /* ignore any oplock requests if oplocks are disabled */
2005 if (!lp_oplocks(SNUM(conn
)) ||
2006 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2007 /* Mask off everything except the private Samba bits. */
2008 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2011 /* this is for OS/2 long file names - say we don't support them */
2012 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2013 /* OS/2 Workplace shell fix may be main code stream in a later
2015 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2017 if (use_nt_status()) {
2018 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2020 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2023 switch( create_disposition
) {
2025 /* If file exists open. If file doesn't exist error. */
2026 if (!file_existed
) {
2027 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2028 "requested for file %s and file "
2030 smb_fname_str_dbg(smb_fname
)));
2032 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2036 case FILE_OVERWRITE
:
2037 /* If file exists overwrite. If file doesn't exist
2039 if (!file_existed
) {
2040 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2041 "requested for file %s and file "
2043 smb_fname_str_dbg(smb_fname
) ));
2045 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2050 /* If file exists error. If file doesn't exist
2053 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2054 "requested for file %s and file "
2055 "already exists.\n",
2056 smb_fname_str_dbg(smb_fname
)));
2057 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2062 return map_nt_error_from_unix(errno
);
2066 case FILE_SUPERSEDE
:
2067 case FILE_OVERWRITE_IF
:
2071 return NT_STATUS_INVALID_PARAMETER
;
2074 flags2
= disposition_to_open_flags(create_disposition
);
2076 /* We only care about matching attributes on file exists and
2079 if (!posix_open
&& file_existed
&&
2080 ((create_disposition
== FILE_OVERWRITE
) ||
2081 (create_disposition
== FILE_OVERWRITE_IF
))) {
2082 if (!open_match_attributes(conn
, existing_dos_attributes
,
2084 smb_fname
->st
.st_ex_mode
,
2085 unx_mode
, &new_unx_mode
)) {
2086 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2087 "for file %s (%x %x) (0%o, 0%o)\n",
2088 smb_fname_str_dbg(smb_fname
),
2089 existing_dos_attributes
,
2091 (unsigned int)smb_fname
->st
.st_ex_mode
,
2092 (unsigned int)unx_mode
));
2094 return NT_STATUS_ACCESS_DENIED
;
2098 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2102 if (!NT_STATUS_IS_OK(status
)) {
2103 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2104 "on file %s returned %s\n",
2105 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2109 open_access_mask
= access_mask
;
2111 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2112 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2115 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2116 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2120 * Note that we ignore the append flag as append does not
2121 * mean the same thing under DOS and Unix.
2124 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
2125 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2126 /* DENY_DOS opens are always underlying read-write on the
2127 file handle, no matter what the requested access mask
2129 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
2130 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
2131 FILE_READ_EA
|FILE_EXECUTE
)) {
2141 * Currently we only look at FILE_WRITE_THROUGH for create options.
2145 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2150 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2154 if (!posix_open
&& !CAN_WRITE(conn
)) {
2156 * We should really return a permission denied error if either
2157 * O_CREAT or O_TRUNC are set, but for compatibility with
2158 * older versions of Samba we just AND them out.
2160 flags2
&= ~(O_CREAT
|O_TRUNC
);
2164 * Ensure we can't write on a read-only share or file.
2167 if (flags
!= O_RDONLY
&& file_existed
&&
2168 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2169 DEBUG(5,("open_file_ntcreate: write access requested for "
2170 "file %s on read only %s\n",
2171 smb_fname_str_dbg(smb_fname
),
2172 !CAN_WRITE(conn
) ? "share" : "file" ));
2174 return NT_STATUS_ACCESS_DENIED
;
2177 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2178 fsp
->share_access
= share_access
;
2179 fsp
->fh
->private_options
= private_flags
;
2180 fsp
->access_mask
= open_access_mask
; /* We change this to the
2181 * requested access_mask after
2182 * the open is done. */
2183 fsp
->posix_open
= posix_open
;
2185 /* Ensure no SAMBA_PRIVATE bits can be set. */
2186 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2188 if (timeval_is_zero(&request_time
)) {
2189 request_time
= fsp
->open_time
;
2193 struct share_mode_entry
*batch_entry
= NULL
;
2194 struct share_mode_entry
*exclusive_entry
= NULL
;
2195 bool got_level2_oplock
= false;
2196 bool got_a_none_oplock
= false;
2199 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2200 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2202 lck
= get_share_mode_lock(talloc_tos(), id
,
2204 smb_fname
, &old_write_time
);
2206 DEBUG(0, ("Could not get share mode lock\n"));
2207 return NT_STATUS_SHARING_VIOLATION
;
2210 /* Get the types we need to examine. */
2211 find_oplock_types(fsp
,
2217 &got_a_none_oplock
);
2219 /* First pass - send break only on batch oplocks. */
2220 if ((req
!= NULL
) &&
2221 delay_for_batch_oplocks(fsp
,
2225 schedule_defer_open(lck
, request_time
, req
);
2227 return NT_STATUS_SHARING_VIOLATION
;
2230 /* Use the client requested access mask here, not the one we
2232 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2233 access_mask
, share_access
,
2234 create_options
, &file_existed
);
2236 if (NT_STATUS_IS_OK(status
)) {
2237 /* We might be going to allow this open. Check oplock
2239 /* Second pass - send break for both batch or
2240 * exclusive oplocks. */
2241 if ((req
!= NULL
) &&
2242 delay_for_exclusive_oplocks(
2247 schedule_defer_open(lck
, request_time
, req
);
2249 return NT_STATUS_SHARING_VIOLATION
;
2253 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2254 /* DELETE_PENDING is not deferred for a second */
2259 grant_fsp_oplock_type(fsp
,
2264 if (!NT_STATUS_IS_OK(status
)) {
2265 uint32 can_access_mask
;
2266 bool can_access
= True
;
2268 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2270 /* Check if this can be done with the deny_dos and fcb
2273 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2274 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2276 DEBUG(0, ("DOS open without an SMB "
2279 return NT_STATUS_INTERNAL_ERROR
;
2282 /* Use the client requested access mask here,
2283 * not the one we open with. */
2284 status
= fcb_or_dos_open(req
,
2295 if (NT_STATUS_IS_OK(status
)) {
2298 *pinfo
= FILE_WAS_OPENED
;
2300 return NT_STATUS_OK
;
2305 * This next line is a subtlety we need for
2306 * MS-Access. If a file open will fail due to share
2307 * permissions and also for security (access) reasons,
2308 * we need to return the access failed error, not the
2309 * share error. We can't open the file due to kernel
2310 * oplock deadlock (it's possible we failed above on
2311 * the open_mode_check()) so use a userspace check.
2314 if (flags
& O_RDWR
) {
2315 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2316 } else if (flags
& O_WRONLY
) {
2317 can_access_mask
= FILE_WRITE_DATA
;
2319 can_access_mask
= FILE_READ_DATA
;
2322 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2323 !CAN_WRITE(conn
)) ||
2324 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2327 can_access_mask
))) {
2332 * If we're returning a share violation, ensure we
2333 * cope with the braindead 1 second delay.
2336 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2337 lp_defer_sharing_violations()) {
2338 struct timeval timeout
;
2339 struct deferred_open_record state
;
2342 /* this is a hack to speed up torture tests
2344 timeout_usecs
= lp_parm_int(SNUM(conn
),
2345 "smbd","sharedelay",
2346 SHARING_VIOLATION_USEC_WAIT
);
2348 /* This is a relative time, added to the absolute
2349 request_time value to get the absolute timeout time.
2350 Note that if this is the second or greater time we enter
2351 this codepath for this particular request mid then
2352 request_time is left as the absolute time of the *first*
2353 time this request mid was processed. This is what allows
2354 the request to eventually time out. */
2356 timeout
= timeval_set(0, timeout_usecs
);
2358 /* Nothing actually uses state.delayed_for_oplocks
2359 but it's handy to differentiate in debug messages
2360 between a 30 second delay due to oplock break, and
2361 a 1 second delay for share mode conflicts. */
2363 state
.delayed_for_oplocks
= False
;
2364 state
.async_open
= false;
2368 && !request_timed_out(request_time
,
2370 defer_open(lck
, request_time
, timeout
,
2378 * We have detected a sharing violation here
2379 * so return the correct error code
2381 status
= NT_STATUS_SHARING_VIOLATION
;
2383 status
= NT_STATUS_ACCESS_DENIED
;
2389 * We exit this block with the share entry *locked*.....
2393 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2396 * Ensure we pay attention to default ACLs on directories if required.
2399 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2400 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2401 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2404 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2405 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2406 (unsigned int)flags
, (unsigned int)flags2
,
2407 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2408 (unsigned int)open_access_mask
));
2410 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2411 flags
|flags2
, unx_mode
, access_mask
,
2412 open_access_mask
, &new_file_created
);
2414 if (!NT_STATUS_IS_OK(fsp_open
)) {
2415 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2416 schedule_async_open(request_time
, req
);
2422 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2424 * The file did exist, but some other (local or NFS)
2425 * process either renamed/unlinked and re-created the
2426 * file with different dev/ino after we walked the path,
2427 * but before we did the open. We could retry the
2428 * open but it's a rare enough case it's easier to
2429 * just fail the open to prevent creating any problems
2430 * in the open file db having the wrong dev/ino key.
2434 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2435 "Old (dev=0x%llu, ino =0x%llu). "
2436 "New (dev=0x%llu, ino=0x%llu). Failing open "
2437 " with NT_STATUS_ACCESS_DENIED.\n",
2438 smb_fname_str_dbg(smb_fname
),
2439 (unsigned long long)saved_stat
.st_ex_dev
,
2440 (unsigned long long)saved_stat
.st_ex_ino
,
2441 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2442 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2443 return NT_STATUS_ACCESS_DENIED
;
2446 if (!file_existed
) {
2447 struct share_mode_entry
*batch_entry
= NULL
;
2448 struct share_mode_entry
*exclusive_entry
= NULL
;
2449 bool got_level2_oplock
= false;
2450 bool got_a_none_oplock
= false;
2451 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2454 * Deal with the race condition where two smbd's detect the
2455 * file doesn't exist and do the create at the same time. One
2456 * of them will win and set a share mode, the other (ie. this
2457 * one) should check if the requested share mode for this
2458 * create is allowed.
2462 * Now the file exists and fsp is successfully opened,
2463 * fsp->dev and fsp->inode are valid and should replace the
2464 * dev=0,inode=0 from a non existent file. Spotted by
2465 * Nadav Danieli <nadavd@exanet.com>. JRA.
2470 lck
= get_share_mode_lock(talloc_tos(), id
,
2472 smb_fname
, &old_write_time
);
2475 DEBUG(0, ("open_file_ntcreate: Could not get share "
2476 "mode lock for %s\n",
2477 smb_fname_str_dbg(smb_fname
)));
2479 return NT_STATUS_SHARING_VIOLATION
;
2482 /* Get the types we need to examine. */
2483 find_oplock_types(fsp
,
2489 &got_a_none_oplock
);
2491 /* First pass - send break only on batch oplocks. */
2492 if ((req
!= NULL
) &&
2493 delay_for_batch_oplocks(fsp
,
2497 schedule_defer_open(lck
, request_time
, req
);
2500 return NT_STATUS_SHARING_VIOLATION
;
2503 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2504 access_mask
, share_access
,
2505 create_options
, &file_existed
);
2507 if (NT_STATUS_IS_OK(status
)) {
2508 /* We might be going to allow this open. Check oplock
2510 /* Second pass - send break for both batch or
2511 * exclusive oplocks. */
2512 if ((req
!= NULL
) &&
2513 delay_for_exclusive_oplocks(
2518 schedule_defer_open(lck
, request_time
, req
);
2521 return NT_STATUS_SHARING_VIOLATION
;
2525 if (!NT_STATUS_IS_OK(status
)) {
2526 struct deferred_open_record state
;
2528 state
.delayed_for_oplocks
= False
;
2529 state
.async_open
= false;
2532 /* Do it all over again immediately. In the second
2533 * round we will find that the file existed and handle
2534 * the DELETE_PENDING and FCB cases correctly. No need
2535 * to duplicate the code here. Essentially this is a
2536 * "goto top of this function", but don't tell
2540 defer_open(lck
, request_time
, timeval_zero(),
2548 grant_fsp_oplock_type(fsp
,
2554 * We exit this block with the share entry *locked*.....
2559 SMB_ASSERT(lck
!= NULL
);
2561 /* Delete streams if create_disposition requires it */
2562 if (!new_file_created
&& clear_ads(create_disposition
) &&
2563 !is_ntfs_stream_smb_fname(smb_fname
)) {
2564 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2565 if (!NT_STATUS_IS_OK(status
)) {
2572 /* note that we ignore failure for the following. It is
2573 basically a hack for NFS, and NFS will never set one of
2574 these only read them. Nobody but Samba can ever set a deny
2575 mode and we have already checked our more authoritative
2576 locking database for permission to set this deny mode. If
2577 the kernel refuses the operations then the kernel is wrong.
2578 note that GPFS supports it as well - jmcd */
2580 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2582 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2583 if(ret_flock
== -1 ){
2588 return NT_STATUS_SHARING_VIOLATION
;
2593 * At this point onwards, we can guarentee that the share entry
2594 * is locked, whether we created the file or not, and that the
2595 * deny mode is compatible with all current opens.
2599 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2600 * but we don't have to store this - just ignore it on access check.
2602 if (conn
->sconn
->using_smb2
) {
2604 * SMB2 doesn't return it (according to Microsoft tests).
2605 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2606 * File created with access = 0x7 (Read, Write, Delete)
2607 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2609 fsp
->access_mask
= access_mask
;
2611 /* But SMB1 does. */
2612 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2616 /* stat opens on existing files don't get oplocks. */
2617 if (is_stat_open(open_access_mask
)) {
2618 fsp
->oplock_type
= NO_OPLOCK
;
2622 if (new_file_created
) {
2623 info
= FILE_WAS_CREATED
;
2625 if (flags2
& O_TRUNC
) {
2626 info
= FILE_WAS_OVERWRITTEN
;
2628 info
= FILE_WAS_OPENED
;
2637 * Setup the oplock info in both the shared memory and
2641 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2642 if (!NT_STATUS_IS_OK(status
)) {
2644 * Could not get the kernel oplock or there are byte-range
2645 * locks on the file.
2647 fsp
->oplock_type
= NO_OPLOCK
;
2650 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2654 /* Handle strange delete on close create semantics. */
2655 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2657 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2659 if (!NT_STATUS_IS_OK(status
)) {
2660 /* Remember to delete the mode we just added. */
2661 del_share_mode(lck
, fsp
);
2666 /* Note that here we set the *inital* delete on close flag,
2667 not the regular one. The magic gets handled in close. */
2668 fsp
->initial_delete_on_close
= True
;
2671 if (info
!= FILE_WAS_OPENED
) {
2672 /* Files should be initially set as archive */
2673 if (lp_map_archive(SNUM(conn
)) ||
2674 lp_store_dos_attributes(SNUM(conn
))) {
2676 if (file_set_dosmode(conn
, smb_fname
,
2677 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2678 parent_dir
, true) == 0) {
2679 unx_mode
= smb_fname
->st
.st_ex_mode
;
2685 /* Determine sparse flag. */
2687 /* POSIX opens are sparse by default. */
2688 fsp
->is_sparse
= true;
2690 fsp
->is_sparse
= (file_existed
&&
2691 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2695 * Take care of inherited ACLs on created files - if default ACL not
2699 if (!posix_open
&& new_file_created
&& !def_acl
) {
2701 int saved_errno
= errno
; /* We might get ENOSYS in the next
2704 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2706 errno
= saved_errno
; /* Ignore ENOSYS */
2709 } else if (new_unx_mode
) {
2713 /* Attributes need changing. File already existed. */
2716 int saved_errno
= errno
; /* We might get ENOSYS in the
2718 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2720 if (ret
== -1 && errno
== ENOSYS
) {
2721 errno
= saved_errno
; /* Ignore ENOSYS */
2723 DEBUG(5, ("open_file_ntcreate: reset "
2724 "attributes of file %s to 0%o\n",
2725 smb_fname_str_dbg(smb_fname
),
2726 (unsigned int)new_unx_mode
));
2727 ret
= 0; /* Don't do the fchmod below. */
2732 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2733 DEBUG(5, ("open_file_ntcreate: failed to reset "
2734 "attributes of file %s to 0%o\n",
2735 smb_fname_str_dbg(smb_fname
),
2736 (unsigned int)new_unx_mode
));
2739 /* If this is a successful open, we must remove any deferred open
2742 del_deferred_open_entry(lck
, req
->mid
,
2743 messaging_server_id(req
->sconn
->msg_ctx
));
2747 return NT_STATUS_OK
;
2751 /****************************************************************************
2752 Open a file for for write to ensure that we can fchmod it.
2753 ****************************************************************************/
2755 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2756 struct smb_filename
*smb_fname
,
2757 files_struct
**result
)
2759 if (!VALID_STAT(smb_fname
->st
)) {
2760 return NT_STATUS_INVALID_PARAMETER
;
2763 return SMB_VFS_CREATE_FILE(
2766 0, /* root_dir_fid */
2767 smb_fname
, /* fname */
2768 FILE_WRITE_DATA
, /* access_mask */
2769 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2771 FILE_OPEN
, /* create_disposition*/
2772 0, /* create_options */
2773 0, /* file_attributes */
2774 INTERNAL_OPEN_ONLY
, /* oplock_request */
2775 0, /* allocation_size */
2776 0, /* private_flags */
2779 result
, /* result */
2783 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2784 struct smb_filename
*smb_dname
,
2785 uint32 file_attributes
)
2788 char *parent_dir
= NULL
;
2790 bool posix_open
= false;
2791 bool need_re_stat
= false;
2792 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2794 if(access_mask
& ~(conn
->share_access
)) {
2795 DEBUG(5,("mkdir_internal: failing share access "
2796 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2797 return NT_STATUS_ACCESS_DENIED
;
2800 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2802 return NT_STATUS_NO_MEMORY
;
2805 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2807 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2809 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2812 status
= check_parent_access(conn
,
2815 if(!NT_STATUS_IS_OK(status
)) {
2816 DEBUG(5,("mkdir_internal: check_parent_access "
2817 "on directory %s for path %s returned %s\n",
2819 smb_dname
->base_name
,
2820 nt_errstr(status
) ));
2824 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2825 return map_nt_error_from_unix(errno
);
2828 /* Ensure we're checking for a symlink here.... */
2829 /* We don't want to get caught by a symlink racer. */
2831 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2832 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2833 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2834 return map_nt_error_from_unix(errno
);
2837 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2838 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2839 smb_fname_str_dbg(smb_dname
)));
2840 return NT_STATUS_NOT_A_DIRECTORY
;
2843 if (lp_store_dos_attributes(SNUM(conn
))) {
2845 file_set_dosmode(conn
, smb_dname
,
2846 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2851 if (lp_inherit_perms(SNUM(conn
))) {
2852 inherit_access_posix_acl(conn
, parent_dir
,
2853 smb_dname
->base_name
, mode
);
2854 need_re_stat
= true;
2859 * Check if high bits should have been set,
2860 * then (if bits are missing): add them.
2861 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2864 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2865 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2866 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2867 (smb_dname
->st
.st_ex_mode
|
2868 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2869 need_re_stat
= true;
2873 /* Change the owner if required. */
2874 if (lp_inherit_owner(SNUM(conn
))) {
2875 change_dir_owner_to_parent(conn
, parent_dir
,
2876 smb_dname
->base_name
,
2878 need_re_stat
= true;
2882 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2883 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2884 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2885 return map_nt_error_from_unix(errno
);
2889 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2890 smb_dname
->base_name
);
2892 return NT_STATUS_OK
;
2895 /****************************************************************************
2896 Open a directory from an NT SMB call.
2897 ****************************************************************************/
2899 static NTSTATUS
open_directory(connection_struct
*conn
,
2900 struct smb_request
*req
,
2901 struct smb_filename
*smb_dname
,
2903 uint32 share_access
,
2904 uint32 create_disposition
,
2905 uint32 create_options
,
2906 uint32 file_attributes
,
2908 files_struct
**result
)
2910 files_struct
*fsp
= NULL
;
2911 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2912 struct share_mode_lock
*lck
= NULL
;
2914 struct timespec mtimespec
;
2917 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2918 DEBUG(2, ("open_directory: %s is a stream name!\n",
2919 smb_fname_str_dbg(smb_dname
)));
2920 return NT_STATUS_NOT_A_DIRECTORY
;
2923 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2924 /* Ensure we have a directory attribute. */
2925 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2928 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2929 "share_access = 0x%x create_options = 0x%x, "
2930 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2931 smb_fname_str_dbg(smb_dname
),
2932 (unsigned int)access_mask
,
2933 (unsigned int)share_access
,
2934 (unsigned int)create_options
,
2935 (unsigned int)create_disposition
,
2936 (unsigned int)file_attributes
));
2938 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
2939 access_mask
, &access_mask
);
2940 if (!NT_STATUS_IS_OK(status
)) {
2941 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2942 "on file %s returned %s\n",
2943 smb_fname_str_dbg(smb_dname
),
2944 nt_errstr(status
)));
2948 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2949 !security_token_has_privilege(get_current_nttok(conn
),
2950 SEC_PRIV_SECURITY
)) {
2951 DEBUG(10, ("open_directory: open on %s "
2952 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2953 smb_fname_str_dbg(smb_dname
)));
2954 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2957 switch( create_disposition
) {
2961 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2964 info
= FILE_WAS_OPENED
;
2969 /* If directory exists error. If directory doesn't
2973 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
2974 DEBUG(2, ("open_directory: unable to create "
2975 "%s. Error was %s\n",
2976 smb_fname_str_dbg(smb_dname
),
2977 nt_errstr(status
)));
2981 status
= mkdir_internal(conn
, smb_dname
,
2984 if (!NT_STATUS_IS_OK(status
)) {
2985 DEBUG(2, ("open_directory: unable to create "
2986 "%s. Error was %s\n",
2987 smb_fname_str_dbg(smb_dname
),
2988 nt_errstr(status
)));
2992 info
= FILE_WAS_CREATED
;
2997 * If directory exists open. If directory doesn't
3002 status
= NT_STATUS_OK
;
3003 info
= FILE_WAS_OPENED
;
3005 status
= mkdir_internal(conn
, smb_dname
,
3008 if (NT_STATUS_IS_OK(status
)) {
3009 info
= FILE_WAS_CREATED
;
3011 /* Cope with create race. */
3012 if (!NT_STATUS_EQUAL(status
,
3013 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3014 DEBUG(2, ("open_directory: unable to create "
3015 "%s. Error was %s\n",
3016 smb_fname_str_dbg(smb_dname
),
3017 nt_errstr(status
)));
3020 info
= FILE_WAS_OPENED
;
3026 case FILE_SUPERSEDE
:
3027 case FILE_OVERWRITE
:
3028 case FILE_OVERWRITE_IF
:
3030 DEBUG(5,("open_directory: invalid create_disposition "
3031 "0x%x for directory %s\n",
3032 (unsigned int)create_disposition
,
3033 smb_fname_str_dbg(smb_dname
)));
3034 return NT_STATUS_INVALID_PARAMETER
;
3037 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3038 DEBUG(5,("open_directory: %s is not a directory !\n",
3039 smb_fname_str_dbg(smb_dname
)));
3040 return NT_STATUS_NOT_A_DIRECTORY
;
3043 if (info
== FILE_WAS_OPENED
) {
3044 status
= smbd_check_access_rights(conn
,
3048 if (!NT_STATUS_IS_OK(status
)) {
3049 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3050 "file %s failed with %s\n",
3051 smb_fname_str_dbg(smb_dname
),
3052 nt_errstr(status
)));
3057 status
= file_new(req
, conn
, &fsp
);
3058 if(!NT_STATUS_IS_OK(status
)) {
3063 * Setup the files_struct for it.
3066 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3067 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3068 fsp
->file_pid
= req
? req
->smbpid
: 0;
3069 fsp
->can_lock
= False
;
3070 fsp
->can_read
= False
;
3071 fsp
->can_write
= False
;
3073 fsp
->share_access
= share_access
;
3074 fsp
->fh
->private_options
= 0;
3076 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3078 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3079 fsp
->print_file
= NULL
;
3080 fsp
->modified
= False
;
3081 fsp
->oplock_type
= NO_OPLOCK
;
3082 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3083 fsp
->is_directory
= True
;
3084 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3085 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3086 if (!NT_STATUS_IS_OK(status
)) {
3087 file_free(req
, fsp
);
3091 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3094 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3096 /* POSIX allows us to open a directory with O_RDONLY. */
3097 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3099 if (!NT_STATUS_IS_OK(status
)) {
3100 DEBUG(5, ("open_directory: Could not open fd for "
3102 smb_fname_str_dbg(smb_dname
),
3103 nt_errstr(status
)));
3104 file_free(req
, fsp
);
3108 status
= vfs_stat_fsp(fsp
);
3109 if (!NT_STATUS_IS_OK(status
)) {
3111 file_free(req
, fsp
);
3115 /* Ensure there was no race condition. */
3116 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3117 DEBUG(5,("open_directory: stat struct differs for "
3119 smb_fname_str_dbg(smb_dname
)));
3121 file_free(req
, fsp
);
3122 return NT_STATUS_ACCESS_DENIED
;
3125 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3126 conn
->connectpath
, smb_dname
,
3130 DEBUG(0, ("open_directory: Could not get share mode lock for "
3131 "%s\n", smb_fname_str_dbg(smb_dname
)));
3133 file_free(req
, fsp
);
3134 return NT_STATUS_SHARING_VIOLATION
;
3137 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3138 access_mask
, share_access
,
3139 create_options
, &dir_existed
);
3141 if (!NT_STATUS_IS_OK(status
)) {
3144 file_free(req
, fsp
);
3148 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3149 req
? req
->mid
: 0, NO_OPLOCK
);
3151 /* For directories the delete on close bit at open time seems
3152 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3153 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3154 status
= can_set_delete_on_close(fsp
, 0);
3155 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3158 file_free(req
, fsp
);
3162 if (NT_STATUS_IS_OK(status
)) {
3163 /* Note that here we set the *inital* delete on close flag,
3164 not the regular one. The magic gets handled in close. */
3165 fsp
->initial_delete_on_close
= True
;
3176 return NT_STATUS_OK
;
3179 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3180 struct smb_filename
*smb_dname
)
3185 status
= SMB_VFS_CREATE_FILE(
3188 0, /* root_dir_fid */
3189 smb_dname
, /* fname */
3190 FILE_READ_ATTRIBUTES
, /* access_mask */
3191 FILE_SHARE_NONE
, /* share_access */
3192 FILE_CREATE
, /* create_disposition*/
3193 FILE_DIRECTORY_FILE
, /* create_options */
3194 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3195 0, /* oplock_request */
3196 0, /* allocation_size */
3197 0, /* private_flags */
3203 if (NT_STATUS_IS_OK(status
)) {
3204 close_file(req
, fsp
, NORMAL_CLOSE
);
3210 /****************************************************************************
3211 Receive notification that one of our open files has been renamed by another
3213 ****************************************************************************/
3215 void msg_file_was_renamed(struct messaging_context
*msg
,
3218 struct server_id server_id
,
3222 char *frm
= (char *)data
->data
;
3224 const char *sharepath
;
3225 const char *base_name
;
3226 const char *stream_name
;
3227 struct smb_filename
*smb_fname
= NULL
;
3228 size_t sp_len
, bn_len
;
3230 struct smbd_server_connection
*sconn
=
3231 talloc_get_type_abort(private_data
,
3232 struct smbd_server_connection
);
3234 if (data
->data
== NULL
3235 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3236 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3237 (int)data
->length
));
3241 /* Unpack the message. */
3242 pull_file_id_24(frm
, &id
);
3243 sharepath
= &frm
[24];
3244 sp_len
= strlen(sharepath
);
3245 base_name
= sharepath
+ sp_len
+ 1;
3246 bn_len
= strlen(base_name
);
3247 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3249 /* stream_name must always be NULL if there is no stream. */
3250 if (stream_name
[0] == '\0') {
3254 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3255 stream_name
, NULL
, &smb_fname
);
3256 if (!NT_STATUS_IS_OK(status
)) {
3260 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3262 sharepath
, smb_fname_str_dbg(smb_fname
),
3263 file_id_string_tos(&id
)));
3265 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3266 fsp
= file_find_di_next(fsp
)) {
3267 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3269 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3270 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3271 smb_fname_str_dbg(smb_fname
)));
3272 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3273 if (!NT_STATUS_IS_OK(status
)) {
3278 /* Now we have the complete path we can work out if this is
3279 actually within this share and adjust newname accordingly. */
3280 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3281 "not sharepath %s) "
3282 "%s from %s -> %s\n",
3283 fsp
->conn
->connectpath
,
3287 smb_fname_str_dbg(smb_fname
)));
3291 TALLOC_FREE(smb_fname
);
3296 * If a main file is opened for delete, all streams need to be checked for
3297 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3298 * If that works, delete them all by setting the delete on close and close.
3301 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3304 struct stream_struct
*stream_info
= NULL
;
3305 files_struct
**streams
= NULL
;
3307 unsigned int num_streams
= 0;
3308 TALLOC_CTX
*frame
= talloc_stackframe();
3311 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3312 &num_streams
, &stream_info
);
3314 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3315 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3316 DEBUG(10, ("no streams around\n"));
3318 return NT_STATUS_OK
;
3321 if (!NT_STATUS_IS_OK(status
)) {
3322 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3323 nt_errstr(status
)));
3327 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3330 if (num_streams
== 0) {
3332 return NT_STATUS_OK
;
3335 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3336 if (streams
== NULL
) {
3337 DEBUG(0, ("talloc failed\n"));
3338 status
= NT_STATUS_NO_MEMORY
;
3342 for (i
=0; i
<num_streams
; i
++) {
3343 struct smb_filename
*smb_fname
= NULL
;
3345 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3350 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3351 stream_info
[i
].name
,
3353 if (!NT_STATUS_IS_OK(status
)) {
3357 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3358 DEBUG(10, ("Unable to stat stream: %s\n",
3359 smb_fname_str_dbg(smb_fname
)));
3362 status
= SMB_VFS_CREATE_FILE(
3365 0, /* root_dir_fid */
3366 smb_fname
, /* fname */
3367 DELETE_ACCESS
, /* access_mask */
3368 (FILE_SHARE_READ
| /* share_access */
3369 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3370 FILE_OPEN
, /* create_disposition*/
3371 0, /* create_options */
3372 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3373 0, /* oplock_request */
3374 0, /* allocation_size */
3375 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3378 &streams
[i
], /* result */
3381 if (!NT_STATUS_IS_OK(status
)) {
3382 DEBUG(10, ("Could not open stream %s: %s\n",
3383 smb_fname_str_dbg(smb_fname
),
3384 nt_errstr(status
)));
3386 TALLOC_FREE(smb_fname
);
3389 TALLOC_FREE(smb_fname
);
3393 * don't touch the variable "status" beyond this point :-)
3396 for (i
-= 1 ; i
>= 0; i
--) {
3397 if (streams
[i
] == NULL
) {
3401 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3402 fsp_str_dbg(streams
[i
])));
3403 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3411 /*********************************************************************
3412 Create a default ACL by inheriting from the parent. If no inheritance
3413 from the parent available, don't set anything. This will leave the actual
3414 permissions the new file or directory already got from the filesystem
3415 as the NT ACL when read.
3416 *********************************************************************/
3418 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3420 TALLOC_CTX
*ctx
= talloc_tos();
3421 char *parent_name
= NULL
;
3422 struct security_descriptor
*parent_desc
= NULL
;
3423 NTSTATUS status
= NT_STATUS_OK
;
3424 struct security_descriptor
*psd
= NULL
;
3425 struct dom_sid
*owner_sid
= NULL
;
3426 struct dom_sid
*group_sid
= NULL
;
3427 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3428 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3429 bool inheritable_components
= false;
3432 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3433 return NT_STATUS_NO_MEMORY
;
3436 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3438 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3440 if (!NT_STATUS_IS_OK(status
)) {
3444 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3447 if (!inheritable_components
&& !inherit_owner
) {
3448 /* Nothing to inherit and not setting owner. */
3449 return NT_STATUS_OK
;
3452 /* Create an inherited descriptor from the parent. */
3454 if (DEBUGLEVEL
>= 10) {
3455 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3456 fsp_str_dbg(fsp
) ));
3457 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3460 /* Inherit from parent descriptor if "inherit owner" set. */
3461 if (inherit_owner
) {
3462 owner_sid
= parent_desc
->owner_sid
;
3463 group_sid
= parent_desc
->group_sid
;
3466 if (owner_sid
== NULL
) {
3467 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3469 if (group_sid
== NULL
) {
3470 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3473 status
= se_create_child_secdesc(ctx
,
3480 if (!NT_STATUS_IS_OK(status
)) {
3484 /* If inheritable_components == false,
3485 se_create_child_secdesc()
3486 creates a security desriptor with a NULL dacl
3487 entry, but with SEC_DESC_DACL_PRESENT. We need
3488 to remove that flag. */
3490 if (!inheritable_components
) {
3491 security_info_sent
&= ~SECINFO_DACL
;
3492 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3495 if (DEBUGLEVEL
>= 10) {
3496 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3497 fsp_str_dbg(fsp
) ));
3498 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3501 if (inherit_owner
) {
3502 /* We need to be root to force this. */
3505 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3508 if (inherit_owner
) {
3515 * Wrapper around open_file_ntcreate and open_directory
3518 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3519 struct smb_request
*req
,
3520 struct smb_filename
*smb_fname
,
3521 uint32_t access_mask
,
3522 uint32_t share_access
,
3523 uint32_t create_disposition
,
3524 uint32_t create_options
,
3525 uint32_t file_attributes
,
3526 uint32_t oplock_request
,
3527 uint64_t allocation_size
,
3528 uint32_t private_flags
,
3529 struct security_descriptor
*sd
,
3530 struct ea_list
*ea_list
,
3532 files_struct
**result
,
3535 int info
= FILE_WAS_OPENED
;
3536 files_struct
*base_fsp
= NULL
;
3537 files_struct
*fsp
= NULL
;
3540 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3541 "file_attributes = 0x%x, share_access = 0x%x, "
3542 "create_disposition = 0x%x create_options = 0x%x "
3543 "oplock_request = 0x%x private_flags = 0x%x "
3544 "ea_list = 0x%p, sd = 0x%p, "
3546 (unsigned int)access_mask
,
3547 (unsigned int)file_attributes
,
3548 (unsigned int)share_access
,
3549 (unsigned int)create_disposition
,
3550 (unsigned int)create_options
,
3551 (unsigned int)oplock_request
,
3552 (unsigned int)private_flags
,
3553 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3555 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3556 status
= NT_STATUS_NOT_SUPPORTED
;
3560 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3561 status
= NT_STATUS_INVALID_PARAMETER
;
3566 oplock_request
|= INTERNAL_OPEN_ONLY
;
3569 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3570 && (access_mask
& DELETE_ACCESS
)
3571 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3573 * We can't open a file with DELETE access if any of the
3574 * streams is open without FILE_SHARE_DELETE
3576 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3578 if (!NT_STATUS_IS_OK(status
)) {
3583 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3584 !security_token_has_privilege(get_current_nttok(conn
),
3585 SEC_PRIV_SECURITY
)) {
3586 DEBUG(10, ("create_file_unixpath: open on %s "
3587 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3588 smb_fname_str_dbg(smb_fname
)));
3589 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3593 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3594 && is_ntfs_stream_smb_fname(smb_fname
)
3595 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3596 uint32 base_create_disposition
;
3597 struct smb_filename
*smb_fname_base
= NULL
;
3599 if (create_options
& FILE_DIRECTORY_FILE
) {
3600 status
= NT_STATUS_NOT_A_DIRECTORY
;
3604 switch (create_disposition
) {
3606 base_create_disposition
= FILE_OPEN
;
3609 base_create_disposition
= FILE_OPEN_IF
;
3613 /* Create an smb_filename with stream_name == NULL. */
3614 status
= create_synthetic_smb_fname(talloc_tos(),
3615 smb_fname
->base_name
,
3618 if (!NT_STATUS_IS_OK(status
)) {
3622 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3623 DEBUG(10, ("Unable to stat stream: %s\n",
3624 smb_fname_str_dbg(smb_fname_base
)));
3627 /* Open the base file. */
3628 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3631 | FILE_SHARE_DELETE
,
3632 base_create_disposition
,
3633 0, 0, 0, 0, 0, NULL
, NULL
,
3635 TALLOC_FREE(smb_fname_base
);
3637 if (!NT_STATUS_IS_OK(status
)) {
3638 DEBUG(10, ("create_file_unixpath for base %s failed: "
3639 "%s\n", smb_fname
->base_name
,
3640 nt_errstr(status
)));
3643 /* we don't need to low level fd */
3648 * If it's a request for a directory open, deal with it separately.
3651 if (create_options
& FILE_DIRECTORY_FILE
) {
3653 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3654 status
= NT_STATUS_INVALID_PARAMETER
;
3658 /* Can't open a temp directory. IFS kit test. */
3659 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3660 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3661 status
= NT_STATUS_INVALID_PARAMETER
;
3666 * We will get a create directory here if the Win32
3667 * app specified a security descriptor in the
3668 * CreateDirectory() call.
3672 status
= open_directory(
3673 conn
, req
, smb_fname
, access_mask
, share_access
,
3674 create_disposition
, create_options
, file_attributes
,
3679 * Ordinary file case.
3682 status
= file_new(req
, conn
, &fsp
);
3683 if(!NT_STATUS_IS_OK(status
)) {
3687 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3688 if (!NT_STATUS_IS_OK(status
)) {
3694 * We're opening the stream element of a
3695 * base_fsp we already opened. Set up the
3698 fsp
->base_fsp
= base_fsp
;
3701 if (allocation_size
) {
3702 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3706 status
= open_file_ntcreate(conn
,
3718 if(!NT_STATUS_IS_OK(status
)) {
3719 file_free(req
, fsp
);
3723 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3725 /* A stream open never opens a directory */
3728 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3733 * Fail the open if it was explicitly a non-directory
3737 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3738 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3743 status
= open_directory(
3744 conn
, req
, smb_fname
, access_mask
,
3745 share_access
, create_disposition
,
3746 create_options
, file_attributes
,
3751 if (!NT_STATUS_IS_OK(status
)) {
3755 fsp
->base_fsp
= base_fsp
;
3757 if ((ea_list
!= NULL
) &&
3758 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3759 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3760 if (!NT_STATUS_IS_OK(status
)) {
3765 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3766 status
= NT_STATUS_ACCESS_DENIED
;
3770 /* Save the requested allocation size. */
3771 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3773 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3774 fsp
->initial_allocation_size
= smb_roundup(
3775 fsp
->conn
, allocation_size
);
3776 if (fsp
->is_directory
) {
3777 /* Can't set allocation size on a directory. */
3778 status
= NT_STATUS_ACCESS_DENIED
;
3781 if (vfs_allocate_file_space(
3782 fsp
, fsp
->initial_allocation_size
) == -1) {
3783 status
= NT_STATUS_DISK_FULL
;
3787 fsp
->initial_allocation_size
= smb_roundup(
3788 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3791 fsp
->initial_allocation_size
= 0;
3794 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3795 fsp
->base_fsp
== NULL
) {
3798 * According to the MS documentation, the only time the security
3799 * descriptor is applied to the opened file is iff we *created* the
3800 * file; an existing file stays the same.
3802 * Also, it seems (from observation) that you can open the file with
3803 * any access mask but you can still write the sd. We need to override
3804 * the granted access before we call set_sd
3805 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3808 uint32_t sec_info_sent
;
3809 uint32_t saved_access_mask
= fsp
->access_mask
;
3811 sec_info_sent
= get_sec_info(sd
);
3813 fsp
->access_mask
= FILE_GENERIC_ALL
;
3815 if (sec_info_sent
& (SECINFO_OWNER
|
3819 status
= set_sd(fsp
, sd
, sec_info_sent
);
3822 fsp
->access_mask
= saved_access_mask
;
3824 if (!NT_STATUS_IS_OK(status
)) {
3827 } else if (lp_inherit_acls(SNUM(conn
))) {
3828 /* Inherit from parent. Errors here are not fatal. */
3829 status
= inherit_new_acl(fsp
);
3830 if (!NT_STATUS_IS_OK(status
)) {
3831 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3833 nt_errstr(status
) ));
3838 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3841 if (pinfo
!= NULL
) {
3845 smb_fname
->st
= fsp
->fsp_name
->st
;
3847 return NT_STATUS_OK
;
3850 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3853 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3855 * The close_file below will close
3860 close_file(req
, fsp
, ERROR_CLOSE
);
3863 if (base_fsp
!= NULL
) {
3864 close_file(req
, base_fsp
, ERROR_CLOSE
);
3871 * Calculate the full path name given a relative fid.
3873 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3874 struct smb_request
*req
,
3875 uint16_t root_dir_fid
,
3876 const struct smb_filename
*smb_fname
,
3877 struct smb_filename
**smb_fname_out
)
3879 files_struct
*dir_fsp
;
3880 char *parent_fname
= NULL
;
3881 char *new_base_name
= NULL
;
3884 if (root_dir_fid
== 0 || !smb_fname
) {
3885 status
= NT_STATUS_INTERNAL_ERROR
;
3889 dir_fsp
= file_fsp(req
, root_dir_fid
);
3891 if (dir_fsp
== NULL
) {
3892 status
= NT_STATUS_INVALID_HANDLE
;
3896 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3897 status
= NT_STATUS_INVALID_HANDLE
;
3901 if (!dir_fsp
->is_directory
) {
3904 * Check to see if this is a mac fork of some kind.
3907 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3908 is_ntfs_stream_smb_fname(smb_fname
)) {
3909 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3914 we need to handle the case when we get a
3915 relative open relative to a file and the
3916 pathname is blank - this is a reopen!
3917 (hint from demyn plantenberg)
3920 status
= NT_STATUS_INVALID_HANDLE
;
3924 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3926 * We're at the toplevel dir, the final file name
3927 * must not contain ./, as this is filtered out
3928 * normally by srvstr_get_path and unix_convert
3929 * explicitly rejects paths containing ./.
3931 parent_fname
= talloc_strdup(talloc_tos(), "");
3932 if (parent_fname
== NULL
) {
3933 status
= NT_STATUS_NO_MEMORY
;
3937 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3940 * Copy in the base directory name.
3943 parent_fname
= talloc_array(talloc_tos(), char,
3945 if (parent_fname
== NULL
) {
3946 status
= NT_STATUS_NO_MEMORY
;
3949 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3953 * Ensure it ends in a '/'.
3954 * We used TALLOC_SIZE +2 to add space for the '/'.
3958 && (parent_fname
[dir_name_len
-1] != '\\')
3959 && (parent_fname
[dir_name_len
-1] != '/')) {
3960 parent_fname
[dir_name_len
] = '/';
3961 parent_fname
[dir_name_len
+1] = '\0';
3965 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3966 smb_fname
->base_name
);
3967 if (new_base_name
== NULL
) {
3968 status
= NT_STATUS_NO_MEMORY
;
3972 status
= filename_convert(req
,
3974 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3979 if (!NT_STATUS_IS_OK(status
)) {
3984 TALLOC_FREE(parent_fname
);
3985 TALLOC_FREE(new_base_name
);
3989 NTSTATUS
create_file_default(connection_struct
*conn
,
3990 struct smb_request
*req
,
3991 uint16_t root_dir_fid
,
3992 struct smb_filename
*smb_fname
,
3993 uint32_t access_mask
,
3994 uint32_t share_access
,
3995 uint32_t create_disposition
,
3996 uint32_t create_options
,
3997 uint32_t file_attributes
,
3998 uint32_t oplock_request
,
3999 uint64_t allocation_size
,
4000 uint32_t private_flags
,
4001 struct security_descriptor
*sd
,
4002 struct ea_list
*ea_list
,
4003 files_struct
**result
,
4006 int info
= FILE_WAS_OPENED
;
4007 files_struct
*fsp
= NULL
;
4009 bool stream_name
= false;
4011 DEBUG(10,("create_file: access_mask = 0x%x "
4012 "file_attributes = 0x%x, share_access = 0x%x, "
4013 "create_disposition = 0x%x create_options = 0x%x "
4014 "oplock_request = 0x%x "
4015 "private_flags = 0x%x "
4016 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4018 (unsigned int)access_mask
,
4019 (unsigned int)file_attributes
,
4020 (unsigned int)share_access
,
4021 (unsigned int)create_disposition
,
4022 (unsigned int)create_options
,
4023 (unsigned int)oplock_request
,
4024 (unsigned int)private_flags
,
4025 (unsigned int)root_dir_fid
,
4026 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4029 * Calculate the filename from the root_dir_if if necessary.
4032 if (root_dir_fid
!= 0) {
4033 struct smb_filename
*smb_fname_out
= NULL
;
4034 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4035 smb_fname
, &smb_fname_out
);
4036 if (!NT_STATUS_IS_OK(status
)) {
4039 smb_fname
= smb_fname_out
;
4043 * Check to see if this is a mac fork of some kind.
4046 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4048 enum FAKE_FILE_TYPE fake_file_type
;
4050 fake_file_type
= is_fake_file(smb_fname
);
4052 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4055 * Here we go! support for changing the disk quotas
4058 * We need to fake up to open this MAGIC QUOTA file
4059 * and return a valid FID.
4061 * w2k close this file directly after openening xp
4062 * also tries a QUERY_FILE_INFO on the file and then
4065 status
= open_fake_file(req
, conn
, req
->vuid
,
4066 fake_file_type
, smb_fname
,
4068 if (!NT_STATUS_IS_OK(status
)) {
4072 ZERO_STRUCT(smb_fname
->st
);
4076 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4077 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4082 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4084 smb_fname
->stream_name
= NULL
;
4085 /* We have to handle this error here. */
4086 if (create_options
& FILE_DIRECTORY_FILE
) {
4087 status
= NT_STATUS_NOT_A_DIRECTORY
;
4090 if (lp_posix_pathnames()) {
4091 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4093 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4096 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4097 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4102 status
= create_file_unixpath(
4103 conn
, req
, smb_fname
, access_mask
, share_access
,
4104 create_disposition
, create_options
, file_attributes
,
4105 oplock_request
, allocation_size
, private_flags
,
4109 if (!NT_STATUS_IS_OK(status
)) {
4114 DEBUG(10, ("create_file: info=%d\n", info
));
4117 if (pinfo
!= NULL
) {
4120 return NT_STATUS_OK
;
4123 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4126 close_file(req
, fsp
, ERROR_CLOSE
);