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 const uint32_t stat_open_bits
=
1070 (SYNCHRONIZE_ACCESS
|
1071 FILE_READ_ATTRIBUTES
|
1072 FILE_WRITE_ATTRIBUTES
);
1074 return (((access_mask
& stat_open_bits
) != 0) &&
1075 ((access_mask
& ~stat_open_bits
) == 0));
1078 /****************************************************************************
1079 Deal with share modes
1080 Invarient: Share mode must be locked on entry and exit.
1081 Returns -1 on error, or number of share modes on success (may be zero).
1082 ****************************************************************************/
1084 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1085 struct share_mode_lock
*lck
,
1088 uint32 share_access
,
1089 uint32 create_options
,
1094 if(lck
->data
->num_share_modes
== 0) {
1095 return NT_STATUS_OK
;
1098 /* A delete on close prohibits everything */
1100 if (is_delete_on_close_set(lck
, name_hash
)) {
1102 * Check the delete on close token
1103 * is valid. It could have been left
1104 * after a server crash.
1106 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1107 if (!share_mode_stale_pid(lck
->data
, i
)) {
1109 *file_existed
= true;
1111 return NT_STATUS_DELETE_PENDING
;
1114 return NT_STATUS_OK
;
1117 if (is_stat_open(access_mask
)) {
1118 /* Stat open that doesn't trigger oplock breaks or share mode
1119 * checks... ! JRA. */
1120 return NT_STATUS_OK
;
1124 * Check if the share modes will give us access.
1127 #if defined(DEVELOPER)
1128 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1129 validate_my_share_entries(conn
->sconn
, i
,
1130 &lck
->data
->share_modes
[i
]);
1134 /* Now we check the share modes, after any oplock breaks. */
1135 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1137 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1141 /* someone else has a share lock on it, check to see if we can
1143 if (share_conflict(&lck
->data
->share_modes
[i
],
1144 access_mask
, share_access
)) {
1146 if (share_mode_stale_pid(lck
->data
, i
)) {
1150 *file_existed
= true;
1152 return NT_STATUS_SHARING_VIOLATION
;
1156 if (lck
->data
->num_share_modes
!= 0) {
1157 *file_existed
= true;
1160 return NT_STATUS_OK
;
1164 * Send a break message to the oplock holder and delay the open for
1168 static NTSTATUS
send_break_message(files_struct
*fsp
,
1169 struct share_mode_entry
*exclusive
,
1174 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1176 DEBUG(10, ("Sending break request to PID %s\n",
1177 procid_str_static(&exclusive
->pid
)));
1178 exclusive
->op_mid
= mid
;
1180 /* Create the message. */
1181 share_mode_entry_to_message(msg
, exclusive
);
1183 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1184 don't want this set in the share mode struct pointed to by lck. */
1186 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1187 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1188 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1191 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1192 MSG_SMB_BREAK_REQUEST
,
1194 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1195 if (!NT_STATUS_IS_OK(status
)) {
1196 DEBUG(3, ("Could not send oplock break message: %s\n",
1197 nt_errstr(status
)));
1204 * Return share_mode_entry pointers for :
1205 * 1). Batch oplock entry.
1206 * 2). Batch or exclusive oplock entry (may be identical to #1).
1207 * bool have_level2_oplock
1208 * bool have_no_oplock.
1209 * Do internal consistency checks on the share mode for a file.
1212 static void find_oplock_types(files_struct
*fsp
,
1214 const struct share_mode_lock
*lck
,
1215 struct share_mode_entry
**pp_batch
,
1216 struct share_mode_entry
**pp_ex_or_batch
,
1218 bool *got_no_oplock
)
1223 *pp_ex_or_batch
= NULL
;
1224 *got_level2
= false;
1225 *got_no_oplock
= false;
1227 /* Ignore stat or internal opens, as is done in
1228 delay_for_batch_oplocks() and
1229 delay_for_exclusive_oplocks().
1231 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1235 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1236 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1240 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1241 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1242 /* We ignore stat opens in the table - they
1243 always have NO_OPLOCK and never get or
1244 cause breaks. JRA. */
1248 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1249 /* batch - can only be one. */
1250 if (share_mode_stale_pid(lck
->data
, i
)) {
1251 DEBUG(10, ("Found stale batch oplock\n"));
1254 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1255 smb_panic("Bad batch oplock entry.");
1257 *pp_batch
= &lck
->data
->share_modes
[i
];
1260 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1261 if (share_mode_stale_pid(lck
->data
, i
)) {
1262 DEBUG(10, ("Found stale duplicate oplock\n"));
1265 /* Exclusive or batch - can only be one. */
1266 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1267 smb_panic("Bad exclusive or batch oplock entry.");
1269 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1272 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1273 if (*pp_batch
|| *pp_ex_or_batch
) {
1274 if (share_mode_stale_pid(lck
->data
, i
)) {
1275 DEBUG(10, ("Found stale LevelII "
1279 smb_panic("Bad levelII oplock entry.");
1284 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1285 if (*pp_batch
|| *pp_ex_or_batch
) {
1286 if (share_mode_stale_pid(lck
->data
, i
)) {
1287 DEBUG(10, ("Found stale NO_OPLOCK "
1291 smb_panic("Bad no oplock entry.");
1293 *got_no_oplock
= true;
1298 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1301 struct share_mode_entry
*batch_entry
)
1303 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1306 if (batch_entry
== NULL
) {
1310 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1313 * This could be achieved by sending a break message
1314 * to ourselves. Special considerations for files
1315 * with delete_on_close flag set!
1317 * For now we keep it simple and do not
1318 * allow delete on close for durable handles.
1323 /* Found a batch oplock */
1324 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1328 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1331 struct share_mode_entry
*ex_entry
)
1333 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1336 if (ex_entry
== NULL
) {
1340 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1342 * since only durable handles can get disconnected,
1343 * and we can only get durable handles with batch oplocks,
1344 * this should actually never be reached...
1349 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1353 static bool file_has_brlocks(files_struct
*fsp
)
1355 struct byte_range_lock
*br_lck
;
1357 br_lck
= brl_get_locks_readonly(fsp
);
1361 return br_lck
->num_locks
> 0 ? true : false;
1364 static void grant_fsp_oplock_type(files_struct
*fsp
,
1366 bool got_level2_oplock
,
1367 bool got_a_none_oplock
)
1369 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1370 lp_level2_oplocks(SNUM(fsp
->conn
));
1372 /* Start by granting what the client asked for,
1373 but ensure no SAMBA_PRIVATE bits can be set. */
1374 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1376 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1377 /* No oplocks on internal open. */
1378 fsp
->oplock_type
= NO_OPLOCK
;
1379 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1380 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1384 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1385 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1387 fsp
->oplock_type
= NO_OPLOCK
;
1390 if (is_stat_open(fsp
->access_mask
)) {
1391 /* Leave the value already set. */
1392 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1393 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1398 * Match what was requested (fsp->oplock_type) with
1399 * what was found in the existing share modes.
1402 if (got_a_none_oplock
) {
1403 fsp
->oplock_type
= NO_OPLOCK
;
1404 } else if (got_level2_oplock
) {
1405 if (fsp
->oplock_type
== NO_OPLOCK
||
1406 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1407 /* Store a level2 oplock, but don't tell the client */
1408 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1410 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1413 /* All share_mode_entries are placeholders or deferred.
1414 * Silently upgrade to fake levelII if the client didn't
1415 * ask for an oplock. */
1416 if (fsp
->oplock_type
== NO_OPLOCK
) {
1417 /* Store a level2 oplock, but don't tell the client */
1418 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1423 * Don't grant level2 to clients that don't want them
1424 * or if we've turned them off.
1426 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1427 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1430 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1431 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1434 static bool request_timed_out(struct timeval request_time
,
1435 struct timeval timeout
)
1437 struct timeval now
, end_time
;
1439 end_time
= timeval_sum(&request_time
, &timeout
);
1440 return (timeval_compare(&end_time
, &now
) < 0);
1443 /****************************************************************************
1444 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1445 ****************************************************************************/
1447 static void defer_open(struct share_mode_lock
*lck
,
1448 struct timeval request_time
,
1449 struct timeval timeout
,
1450 struct smb_request
*req
,
1451 struct deferred_open_record
*state
)
1453 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1455 /* Paranoia check */
1460 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1461 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1463 if (is_deferred_open_entry(e
) &&
1464 serverid_equal(&self
, &e
->pid
) &&
1465 (e
->op_mid
== req
->mid
)) {
1466 DEBUG(0, ("Trying to defer an already deferred "
1467 "request: mid=%llu, exiting\n",
1468 (unsigned long long)req
->mid
));
1470 exit_server("attempt to defer a deferred request");
1475 /* End paranoia check */
1477 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1478 "open entry for mid %llu\n",
1479 (unsigned int)request_time
.tv_sec
,
1480 (unsigned int)request_time
.tv_usec
,
1481 (unsigned long long)req
->mid
));
1483 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1484 state
->id
, (char *)state
, sizeof(*state
))) {
1486 exit_server("push_deferred_open_message_smb failed");
1489 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1494 /****************************************************************************
1495 On overwrite open ensure that the attributes match.
1496 ****************************************************************************/
1498 static bool open_match_attributes(connection_struct
*conn
,
1499 uint32 old_dos_attr
,
1500 uint32 new_dos_attr
,
1501 mode_t existing_unx_mode
,
1502 mode_t new_unx_mode
,
1503 mode_t
*returned_unx_mode
)
1505 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1507 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1508 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1510 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1511 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1512 *returned_unx_mode
= new_unx_mode
;
1514 *returned_unx_mode
= (mode_t
)0;
1517 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1518 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1519 "returned_unx_mode = 0%o\n",
1520 (unsigned int)old_dos_attr
,
1521 (unsigned int)existing_unx_mode
,
1522 (unsigned int)new_dos_attr
,
1523 (unsigned int)*returned_unx_mode
));
1525 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1526 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1527 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1528 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1532 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1533 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1534 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1541 /****************************************************************************
1542 Special FCB or DOS processing in the case of a sharing violation.
1543 Try and find a duplicated file handle.
1544 ****************************************************************************/
1546 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1547 connection_struct
*conn
,
1548 files_struct
*fsp_to_dup_into
,
1549 const struct smb_filename
*smb_fname
,
1554 uint32 share_access
,
1555 uint32 create_options
)
1559 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1560 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1562 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1563 fsp
= file_find_di_next(fsp
)) {
1565 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1566 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1567 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1568 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1569 (unsigned int)fsp
->file_pid
,
1570 (unsigned int)fsp
->fh
->private_options
,
1571 (unsigned int)fsp
->access_mask
));
1573 if (fsp
->fh
->fd
!= -1 &&
1574 fsp
->vuid
== vuid
&&
1575 fsp
->file_pid
== file_pid
&&
1576 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1577 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1578 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1579 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1580 strequal(fsp
->fsp_name
->stream_name
,
1581 smb_fname
->stream_name
)) {
1582 DEBUG(10,("fcb_or_dos_open: file match\n"));
1588 return NT_STATUS_NOT_FOUND
;
1591 /* quite an insane set of semantics ... */
1592 if (is_executable(smb_fname
->base_name
) &&
1593 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1594 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1595 return NT_STATUS_INVALID_PARAMETER
;
1598 /* We need to duplicate this fsp. */
1599 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1600 create_options
, fsp_to_dup_into
);
1603 static void schedule_defer_open(struct share_mode_lock
*lck
,
1604 struct timeval request_time
,
1605 struct smb_request
*req
)
1607 struct deferred_open_record state
;
1609 /* This is a relative time, added to the absolute
1610 request_time value to get the absolute timeout time.
1611 Note that if this is the second or greater time we enter
1612 this codepath for this particular request mid then
1613 request_time is left as the absolute time of the *first*
1614 time this request mid was processed. This is what allows
1615 the request to eventually time out. */
1617 struct timeval timeout
;
1619 /* Normally the smbd we asked should respond within
1620 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1621 * the client did, give twice the timeout as a safety
1622 * measure here in case the other smbd is stuck
1623 * somewhere else. */
1625 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1627 /* Nothing actually uses state.delayed_for_oplocks
1628 but it's handy to differentiate in debug messages
1629 between a 30 second delay due to oplock break, and
1630 a 1 second delay for share mode conflicts. */
1632 state
.delayed_for_oplocks
= True
;
1633 state
.async_open
= false;
1634 state
.id
= lck
->data
->id
;
1636 if (!request_timed_out(request_time
, timeout
)) {
1637 defer_open(lck
, request_time
, timeout
, req
, &state
);
1641 /****************************************************************************
1642 Reschedule an open call that went asynchronous.
1643 ****************************************************************************/
1645 static void schedule_async_open(struct timeval request_time
,
1646 struct smb_request
*req
)
1648 struct deferred_open_record state
;
1649 struct timeval timeout
;
1651 timeout
= timeval_set(20, 0);
1654 state
.delayed_for_oplocks
= false;
1655 state
.async_open
= true;
1657 if (!request_timed_out(request_time
, timeout
)) {
1658 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1662 /****************************************************************************
1663 Work out what access_mask to use from what the client sent us.
1664 ****************************************************************************/
1666 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1667 connection_struct
*conn
,
1668 const struct smb_filename
*smb_fname
,
1670 uint32_t *p_access_mask
)
1672 struct security_descriptor
*sd
;
1673 uint32_t access_granted
;
1676 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1677 *p_access_mask
|= FILE_GENERIC_ALL
;
1678 return NT_STATUS_OK
;
1681 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1686 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1688 * File did not exist
1690 *p_access_mask
= FILE_GENERIC_ALL
;
1691 return NT_STATUS_OK
;
1693 if (!NT_STATUS_IS_OK(status
)) {
1694 DEBUG(10,("Could not get acl on file %s: %s\n",
1695 smb_fname_str_dbg(smb_fname
),
1696 nt_errstr(status
)));
1697 return NT_STATUS_ACCESS_DENIED
;
1701 * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
1702 * also takes care of owner WRITE_DAC and READ_CONTROL.
1704 status
= se_file_access_check(sd
,
1705 get_current_nttok(conn
),
1707 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1712 if (!NT_STATUS_IS_OK(status
)) {
1713 DEBUG(10, ("Access denied on file %s: "
1714 "when calculating maximum access\n",
1715 smb_fname_str_dbg(smb_fname
)));
1716 return NT_STATUS_ACCESS_DENIED
;
1718 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1720 if (!(access_granted
& DELETE_ACCESS
)) {
1721 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1722 *p_access_mask
|= DELETE_ACCESS
;
1726 return NT_STATUS_OK
;
1729 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1730 const struct smb_filename
*smb_fname
,
1732 uint32_t access_mask
,
1733 uint32_t *access_mask_out
)
1736 uint32_t orig_access_mask
= access_mask
;
1737 uint32_t rejected_share_access
;
1740 * Convert GENERIC bits to specific bits.
1743 se_map_generic(&access_mask
, &file_generic_mapping
);
1745 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1746 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1748 status
= smbd_calculate_maximum_allowed_access(
1749 conn
, smb_fname
, use_privs
, &access_mask
);
1751 if (!NT_STATUS_IS_OK(status
)) {
1755 access_mask
&= conn
->share_access
;
1758 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1760 if (rejected_share_access
) {
1761 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1762 "file %s: rejected by share access mask[0x%08X] "
1763 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1764 smb_fname_str_dbg(smb_fname
),
1766 orig_access_mask
, access_mask
,
1767 rejected_share_access
));
1768 return NT_STATUS_ACCESS_DENIED
;
1771 *access_mask_out
= access_mask
;
1772 return NT_STATUS_OK
;
1775 /****************************************************************************
1776 Remove the deferred open entry under lock.
1777 ****************************************************************************/
1779 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1780 struct server_id pid
)
1782 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1785 DEBUG(0, ("could not get share mode lock\n"));
1788 del_deferred_open_entry(lck
, mid
, pid
);
1792 /****************************************************************************
1793 Return true if this is a state pointer to an asynchronous create.
1794 ****************************************************************************/
1796 bool is_deferred_open_async(const void *ptr
)
1798 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1800 return state
->async_open
;
1803 static bool clear_ads(uint32_t create_disposition
)
1807 switch (create_disposition
) {
1808 case FILE_SUPERSEDE
:
1809 case FILE_OVERWRITE_IF
:
1810 case FILE_OVERWRITE
:
1819 static int disposition_to_open_flags(uint32_t create_disposition
)
1824 * Currently we're using FILE_SUPERSEDE as the same as
1825 * FILE_OVERWRITE_IF but they really are
1826 * different. FILE_SUPERSEDE deletes an existing file
1827 * (requiring delete access) then recreates it.
1830 switch (create_disposition
) {
1831 case FILE_SUPERSEDE
:
1832 case FILE_OVERWRITE_IF
:
1834 * If file exists replace/overwrite. If file doesn't
1837 ret
= O_CREAT
|O_TRUNC
;
1842 * If file exists open. If file doesn't exist error.
1847 case FILE_OVERWRITE
:
1849 * If file exists overwrite. If file doesn't exist
1857 * If file exists error. If file doesn't exist create.
1859 ret
= O_CREAT
|O_EXCL
;
1864 * If file exists open. If file doesn't exist create.
1872 /****************************************************************************
1873 Open a file with a share mode. Passed in an already created files_struct *.
1874 ****************************************************************************/
1876 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1877 struct smb_request
*req
,
1878 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1879 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1880 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1881 uint32 create_options
, /* options such as delete on close. */
1882 uint32 new_dos_attributes
, /* attributes used for new file. */
1883 int oplock_request
, /* internal Samba oplock codes. */
1884 /* Information (FILE_EXISTS etc.) */
1885 uint32_t private_flags
, /* Samba specific flags. */
1889 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1892 bool file_existed
= VALID_STAT(smb_fname
->st
);
1893 bool def_acl
= False
;
1894 bool posix_open
= False
;
1895 bool new_file_created
= False
;
1896 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1897 mode_t new_unx_mode
= (mode_t
)0;
1898 mode_t unx_mode
= (mode_t
)0;
1900 uint32 existing_dos_attributes
= 0;
1901 struct timeval request_time
= timeval_zero();
1902 struct share_mode_lock
*lck
= NULL
;
1903 uint32 open_access_mask
= access_mask
;
1906 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1908 if (conn
->printer
) {
1910 * Printers are handled completely differently.
1911 * Most of the passed parameters are ignored.
1915 *pinfo
= FILE_WAS_CREATED
;
1918 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1919 smb_fname_str_dbg(smb_fname
)));
1922 DEBUG(0,("open_file_ntcreate: printer open without "
1923 "an SMB request!\n"));
1924 return NT_STATUS_INTERNAL_ERROR
;
1927 return print_spool_open(fsp
, smb_fname
->base_name
,
1931 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1933 return NT_STATUS_NO_MEMORY
;
1936 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1938 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1939 new_dos_attributes
= 0;
1941 /* Windows allows a new file to be created and
1942 silently removes a FILE_ATTRIBUTE_DIRECTORY
1943 sent by the client. Do the same. */
1945 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1947 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1949 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1950 smb_fname
, parent_dir
);
1953 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1954 "access_mask=0x%x share_access=0x%x "
1955 "create_disposition = 0x%x create_options=0x%x "
1956 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1957 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1958 access_mask
, share_access
, create_disposition
,
1959 create_options
, (unsigned int)unx_mode
, oplock_request
,
1960 (unsigned int)private_flags
));
1962 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1963 DEBUG(0, ("No smb request but not an internal only open!\n"));
1964 return NT_STATUS_INTERNAL_ERROR
;
1968 * Only non-internal opens can be deferred at all
1973 if (get_deferred_open_message_state(req
,
1976 /* Remember the absolute time of the original
1977 request with this mid. We'll use it later to
1978 see if this has timed out. */
1980 /* If it was an async create retry, the file
1983 if (is_deferred_open_async(ptr
)) {
1984 SET_STAT_INVALID(smb_fname
->st
);
1985 file_existed
= false;
1987 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1988 /* Remove the deferred open entry under lock. */
1989 remove_deferred_open_entry(
1990 state
->id
, req
->mid
,
1991 messaging_server_id(req
->sconn
->msg_ctx
));
1994 /* Ensure we don't reprocess this message. */
1995 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
2000 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2002 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2006 /* ignore any oplock requests if oplocks are disabled */
2007 if (!lp_oplocks(SNUM(conn
)) ||
2008 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2009 /* Mask off everything except the private Samba bits. */
2010 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2013 /* this is for OS/2 long file names - say we don't support them */
2014 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2015 /* OS/2 Workplace shell fix may be main code stream in a later
2017 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2019 if (use_nt_status()) {
2020 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2022 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2025 switch( create_disposition
) {
2027 /* If file exists open. If file doesn't exist error. */
2028 if (!file_existed
) {
2029 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2030 "requested for file %s and file "
2032 smb_fname_str_dbg(smb_fname
)));
2034 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2038 case FILE_OVERWRITE
:
2039 /* If file exists overwrite. If file doesn't exist
2041 if (!file_existed
) {
2042 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2043 "requested for file %s and file "
2045 smb_fname_str_dbg(smb_fname
) ));
2047 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2052 /* If file exists error. If file doesn't exist
2055 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2056 "requested for file %s and file "
2057 "already exists.\n",
2058 smb_fname_str_dbg(smb_fname
)));
2059 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2064 return map_nt_error_from_unix(errno
);
2068 case FILE_SUPERSEDE
:
2069 case FILE_OVERWRITE_IF
:
2073 return NT_STATUS_INVALID_PARAMETER
;
2076 flags2
= disposition_to_open_flags(create_disposition
);
2078 /* We only care about matching attributes on file exists and
2081 if (!posix_open
&& file_existed
&&
2082 ((create_disposition
== FILE_OVERWRITE
) ||
2083 (create_disposition
== FILE_OVERWRITE_IF
))) {
2084 if (!open_match_attributes(conn
, existing_dos_attributes
,
2086 smb_fname
->st
.st_ex_mode
,
2087 unx_mode
, &new_unx_mode
)) {
2088 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2089 "for file %s (%x %x) (0%o, 0%o)\n",
2090 smb_fname_str_dbg(smb_fname
),
2091 existing_dos_attributes
,
2093 (unsigned int)smb_fname
->st
.st_ex_mode
,
2094 (unsigned int)unx_mode
));
2096 return NT_STATUS_ACCESS_DENIED
;
2100 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2104 if (!NT_STATUS_IS_OK(status
)) {
2105 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2106 "on file %s returned %s\n",
2107 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2111 open_access_mask
= access_mask
;
2113 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2114 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2117 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2118 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2122 * Note that we ignore the append flag as append does not
2123 * mean the same thing under DOS and Unix.
2126 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
2127 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2128 /* DENY_DOS opens are always underlying read-write on the
2129 file handle, no matter what the requested access mask
2131 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
2132 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
2133 FILE_READ_EA
|FILE_EXECUTE
)) {
2143 * Currently we only look at FILE_WRITE_THROUGH for create options.
2147 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2152 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2156 if (!posix_open
&& !CAN_WRITE(conn
)) {
2158 * We should really return a permission denied error if either
2159 * O_CREAT or O_TRUNC are set, but for compatibility with
2160 * older versions of Samba we just AND them out.
2162 flags2
&= ~(O_CREAT
|O_TRUNC
);
2166 * Ensure we can't write on a read-only share or file.
2169 if (flags
!= O_RDONLY
&& file_existed
&&
2170 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2171 DEBUG(5,("open_file_ntcreate: write access requested for "
2172 "file %s on read only %s\n",
2173 smb_fname_str_dbg(smb_fname
),
2174 !CAN_WRITE(conn
) ? "share" : "file" ));
2176 return NT_STATUS_ACCESS_DENIED
;
2179 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2180 fsp
->share_access
= share_access
;
2181 fsp
->fh
->private_options
= private_flags
;
2182 fsp
->access_mask
= open_access_mask
; /* We change this to the
2183 * requested access_mask after
2184 * the open is done. */
2185 fsp
->posix_open
= posix_open
;
2187 /* Ensure no SAMBA_PRIVATE bits can be set. */
2188 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2190 if (timeval_is_zero(&request_time
)) {
2191 request_time
= fsp
->open_time
;
2195 struct share_mode_entry
*batch_entry
= NULL
;
2196 struct share_mode_entry
*exclusive_entry
= NULL
;
2197 bool got_level2_oplock
= false;
2198 bool got_a_none_oplock
= false;
2201 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2202 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2204 lck
= get_share_mode_lock(talloc_tos(), id
,
2206 smb_fname
, &old_write_time
);
2208 DEBUG(0, ("Could not get share mode lock\n"));
2209 return NT_STATUS_SHARING_VIOLATION
;
2212 /* Get the types we need to examine. */
2213 find_oplock_types(fsp
,
2219 &got_a_none_oplock
);
2221 /* First pass - send break only on batch oplocks. */
2222 if ((req
!= NULL
) &&
2223 delay_for_batch_oplocks(fsp
,
2227 schedule_defer_open(lck
, request_time
, req
);
2229 return NT_STATUS_SHARING_VIOLATION
;
2232 /* Use the client requested access mask here, not the one we
2234 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2235 access_mask
, share_access
,
2236 create_options
, &file_existed
);
2238 if (NT_STATUS_IS_OK(status
)) {
2239 /* We might be going to allow this open. Check oplock
2241 /* Second pass - send break for both batch or
2242 * exclusive oplocks. */
2243 if ((req
!= NULL
) &&
2244 delay_for_exclusive_oplocks(
2249 schedule_defer_open(lck
, request_time
, req
);
2251 return NT_STATUS_SHARING_VIOLATION
;
2255 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2256 /* DELETE_PENDING is not deferred for a second */
2261 grant_fsp_oplock_type(fsp
,
2266 if (!NT_STATUS_IS_OK(status
)) {
2267 uint32 can_access_mask
;
2268 bool can_access
= True
;
2270 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2272 /* Check if this can be done with the deny_dos and fcb
2275 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2276 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2278 DEBUG(0, ("DOS open without an SMB "
2281 return NT_STATUS_INTERNAL_ERROR
;
2284 /* Use the client requested access mask here,
2285 * not the one we open with. */
2286 status
= fcb_or_dos_open(req
,
2297 if (NT_STATUS_IS_OK(status
)) {
2300 *pinfo
= FILE_WAS_OPENED
;
2302 return NT_STATUS_OK
;
2307 * This next line is a subtlety we need for
2308 * MS-Access. If a file open will fail due to share
2309 * permissions and also for security (access) reasons,
2310 * we need to return the access failed error, not the
2311 * share error. We can't open the file due to kernel
2312 * oplock deadlock (it's possible we failed above on
2313 * the open_mode_check()) so use a userspace check.
2316 if (flags
& O_RDWR
) {
2317 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2318 } else if (flags
& O_WRONLY
) {
2319 can_access_mask
= FILE_WRITE_DATA
;
2321 can_access_mask
= FILE_READ_DATA
;
2324 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2325 !CAN_WRITE(conn
)) ||
2326 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2329 can_access_mask
))) {
2334 * If we're returning a share violation, ensure we
2335 * cope with the braindead 1 second delay.
2338 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2339 lp_defer_sharing_violations()) {
2340 struct timeval timeout
;
2341 struct deferred_open_record state
;
2344 /* this is a hack to speed up torture tests
2346 timeout_usecs
= lp_parm_int(SNUM(conn
),
2347 "smbd","sharedelay",
2348 SHARING_VIOLATION_USEC_WAIT
);
2350 /* This is a relative time, added to the absolute
2351 request_time value to get the absolute timeout time.
2352 Note that if this is the second or greater time we enter
2353 this codepath for this particular request mid then
2354 request_time is left as the absolute time of the *first*
2355 time this request mid was processed. This is what allows
2356 the request to eventually time out. */
2358 timeout
= timeval_set(0, timeout_usecs
);
2360 /* Nothing actually uses state.delayed_for_oplocks
2361 but it's handy to differentiate in debug messages
2362 between a 30 second delay due to oplock break, and
2363 a 1 second delay for share mode conflicts. */
2365 state
.delayed_for_oplocks
= False
;
2366 state
.async_open
= false;
2370 && !request_timed_out(request_time
,
2372 defer_open(lck
, request_time
, timeout
,
2380 * We have detected a sharing violation here
2381 * so return the correct error code
2383 status
= NT_STATUS_SHARING_VIOLATION
;
2385 status
= NT_STATUS_ACCESS_DENIED
;
2391 * We exit this block with the share entry *locked*.....
2395 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2398 * Ensure we pay attention to default ACLs on directories if required.
2401 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2402 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2403 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2406 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2407 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2408 (unsigned int)flags
, (unsigned int)flags2
,
2409 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2410 (unsigned int)open_access_mask
));
2412 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2413 flags
|flags2
, unx_mode
, access_mask
,
2414 open_access_mask
, &new_file_created
);
2416 if (!NT_STATUS_IS_OK(fsp_open
)) {
2417 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2418 schedule_async_open(request_time
, req
);
2424 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2426 * The file did exist, but some other (local or NFS)
2427 * process either renamed/unlinked and re-created the
2428 * file with different dev/ino after we walked the path,
2429 * but before we did the open. We could retry the
2430 * open but it's a rare enough case it's easier to
2431 * just fail the open to prevent creating any problems
2432 * in the open file db having the wrong dev/ino key.
2436 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2437 "Old (dev=0x%llu, ino =0x%llu). "
2438 "New (dev=0x%llu, ino=0x%llu). Failing open "
2439 " with NT_STATUS_ACCESS_DENIED.\n",
2440 smb_fname_str_dbg(smb_fname
),
2441 (unsigned long long)saved_stat
.st_ex_dev
,
2442 (unsigned long long)saved_stat
.st_ex_ino
,
2443 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2444 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2445 return NT_STATUS_ACCESS_DENIED
;
2448 if (!file_existed
) {
2449 struct share_mode_entry
*batch_entry
= NULL
;
2450 struct share_mode_entry
*exclusive_entry
= NULL
;
2451 bool got_level2_oplock
= false;
2452 bool got_a_none_oplock
= false;
2453 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2456 * Deal with the race condition where two smbd's detect the
2457 * file doesn't exist and do the create at the same time. One
2458 * of them will win and set a share mode, the other (ie. this
2459 * one) should check if the requested share mode for this
2460 * create is allowed.
2464 * Now the file exists and fsp is successfully opened,
2465 * fsp->dev and fsp->inode are valid and should replace the
2466 * dev=0,inode=0 from a non existent file. Spotted by
2467 * Nadav Danieli <nadavd@exanet.com>. JRA.
2472 lck
= get_share_mode_lock(talloc_tos(), id
,
2474 smb_fname
, &old_write_time
);
2477 DEBUG(0, ("open_file_ntcreate: Could not get share "
2478 "mode lock for %s\n",
2479 smb_fname_str_dbg(smb_fname
)));
2481 return NT_STATUS_SHARING_VIOLATION
;
2484 /* Get the types we need to examine. */
2485 find_oplock_types(fsp
,
2491 &got_a_none_oplock
);
2493 /* First pass - send break only on batch oplocks. */
2494 if ((req
!= NULL
) &&
2495 delay_for_batch_oplocks(fsp
,
2499 schedule_defer_open(lck
, request_time
, req
);
2502 return NT_STATUS_SHARING_VIOLATION
;
2505 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2506 access_mask
, share_access
,
2507 create_options
, &file_existed
);
2509 if (NT_STATUS_IS_OK(status
)) {
2510 /* We might be going to allow this open. Check oplock
2512 /* Second pass - send break for both batch or
2513 * exclusive oplocks. */
2514 if ((req
!= NULL
) &&
2515 delay_for_exclusive_oplocks(
2520 schedule_defer_open(lck
, request_time
, req
);
2523 return NT_STATUS_SHARING_VIOLATION
;
2527 if (!NT_STATUS_IS_OK(status
)) {
2528 struct deferred_open_record state
;
2530 state
.delayed_for_oplocks
= False
;
2531 state
.async_open
= false;
2534 /* Do it all over again immediately. In the second
2535 * round we will find that the file existed and handle
2536 * the DELETE_PENDING and FCB cases correctly. No need
2537 * to duplicate the code here. Essentially this is a
2538 * "goto top of this function", but don't tell
2542 defer_open(lck
, request_time
, timeval_zero(),
2550 grant_fsp_oplock_type(fsp
,
2556 * We exit this block with the share entry *locked*.....
2561 SMB_ASSERT(lck
!= NULL
);
2563 /* Delete streams if create_disposition requires it */
2564 if (!new_file_created
&& clear_ads(create_disposition
) &&
2565 !is_ntfs_stream_smb_fname(smb_fname
)) {
2566 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2567 if (!NT_STATUS_IS_OK(status
)) {
2574 /* note that we ignore failure for the following. It is
2575 basically a hack for NFS, and NFS will never set one of
2576 these only read them. Nobody but Samba can ever set a deny
2577 mode and we have already checked our more authoritative
2578 locking database for permission to set this deny mode. If
2579 the kernel refuses the operations then the kernel is wrong.
2580 note that GPFS supports it as well - jmcd */
2582 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2584 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2585 if(ret_flock
== -1 ){
2590 return NT_STATUS_SHARING_VIOLATION
;
2595 * At this point onwards, we can guarantee that the share entry
2596 * is locked, whether we created the file or not, and that the
2597 * deny mode is compatible with all current opens.
2601 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2602 * but we don't have to store this - just ignore it on access check.
2604 if (conn
->sconn
->using_smb2
) {
2606 * SMB2 doesn't return it (according to Microsoft tests).
2607 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2608 * File created with access = 0x7 (Read, Write, Delete)
2609 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2611 fsp
->access_mask
= access_mask
;
2613 /* But SMB1 does. */
2614 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2618 /* stat opens on existing files don't get oplocks. */
2619 if (is_stat_open(open_access_mask
)) {
2620 fsp
->oplock_type
= NO_OPLOCK
;
2624 if (new_file_created
) {
2625 info
= FILE_WAS_CREATED
;
2627 if (flags2
& O_TRUNC
) {
2628 info
= FILE_WAS_OVERWRITTEN
;
2630 info
= FILE_WAS_OPENED
;
2639 * Setup the oplock info in both the shared memory and
2643 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2644 if (!NT_STATUS_IS_OK(status
)) {
2646 * Could not get the kernel oplock or there are byte-range
2647 * locks on the file.
2649 fsp
->oplock_type
= NO_OPLOCK
;
2652 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2656 /* Handle strange delete on close create semantics. */
2657 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2659 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2661 if (!NT_STATUS_IS_OK(status
)) {
2662 /* Remember to delete the mode we just added. */
2663 del_share_mode(lck
, fsp
);
2668 /* Note that here we set the *inital* delete on close flag,
2669 not the regular one. The magic gets handled in close. */
2670 fsp
->initial_delete_on_close
= True
;
2673 if (info
!= FILE_WAS_OPENED
) {
2674 /* Files should be initially set as archive */
2675 if (lp_map_archive(SNUM(conn
)) ||
2676 lp_store_dos_attributes(SNUM(conn
))) {
2678 if (file_set_dosmode(conn
, smb_fname
,
2679 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2680 parent_dir
, true) == 0) {
2681 unx_mode
= smb_fname
->st
.st_ex_mode
;
2687 /* Determine sparse flag. */
2689 /* POSIX opens are sparse by default. */
2690 fsp
->is_sparse
= true;
2692 fsp
->is_sparse
= (file_existed
&&
2693 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2697 * Take care of inherited ACLs on created files - if default ACL not
2701 if (!posix_open
&& new_file_created
&& !def_acl
) {
2703 int saved_errno
= errno
; /* We might get ENOSYS in the next
2706 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2708 errno
= saved_errno
; /* Ignore ENOSYS */
2711 } else if (new_unx_mode
) {
2715 /* Attributes need changing. File already existed. */
2718 int saved_errno
= errno
; /* We might get ENOSYS in the
2720 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2722 if (ret
== -1 && errno
== ENOSYS
) {
2723 errno
= saved_errno
; /* Ignore ENOSYS */
2725 DEBUG(5, ("open_file_ntcreate: reset "
2726 "attributes of file %s to 0%o\n",
2727 smb_fname_str_dbg(smb_fname
),
2728 (unsigned int)new_unx_mode
));
2729 ret
= 0; /* Don't do the fchmod below. */
2734 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2735 DEBUG(5, ("open_file_ntcreate: failed to reset "
2736 "attributes of file %s to 0%o\n",
2737 smb_fname_str_dbg(smb_fname
),
2738 (unsigned int)new_unx_mode
));
2741 /* If this is a successful open, we must remove any deferred open
2744 del_deferred_open_entry(lck
, req
->mid
,
2745 messaging_server_id(req
->sconn
->msg_ctx
));
2749 return NT_STATUS_OK
;
2753 /****************************************************************************
2754 Open a file for for write to ensure that we can fchmod it.
2755 ****************************************************************************/
2757 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2758 struct smb_filename
*smb_fname
,
2759 files_struct
**result
)
2761 if (!VALID_STAT(smb_fname
->st
)) {
2762 return NT_STATUS_INVALID_PARAMETER
;
2765 return SMB_VFS_CREATE_FILE(
2768 0, /* root_dir_fid */
2769 smb_fname
, /* fname */
2770 FILE_WRITE_DATA
, /* access_mask */
2771 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2773 FILE_OPEN
, /* create_disposition*/
2774 0, /* create_options */
2775 0, /* file_attributes */
2776 INTERNAL_OPEN_ONLY
, /* oplock_request */
2777 0, /* allocation_size */
2778 0, /* private_flags */
2781 result
, /* result */
2785 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2786 struct smb_filename
*smb_dname
,
2787 uint32 file_attributes
)
2790 char *parent_dir
= NULL
;
2792 bool posix_open
= false;
2793 bool need_re_stat
= false;
2794 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2796 if(access_mask
& ~(conn
->share_access
)) {
2797 DEBUG(5,("mkdir_internal: failing share access "
2798 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2799 return NT_STATUS_ACCESS_DENIED
;
2802 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2804 return NT_STATUS_NO_MEMORY
;
2807 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2809 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2811 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2814 status
= check_parent_access(conn
,
2817 if(!NT_STATUS_IS_OK(status
)) {
2818 DEBUG(5,("mkdir_internal: check_parent_access "
2819 "on directory %s for path %s returned %s\n",
2821 smb_dname
->base_name
,
2822 nt_errstr(status
) ));
2826 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2827 return map_nt_error_from_unix(errno
);
2830 /* Ensure we're checking for a symlink here.... */
2831 /* We don't want to get caught by a symlink racer. */
2833 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2834 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2835 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2836 return map_nt_error_from_unix(errno
);
2839 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2840 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2841 smb_fname_str_dbg(smb_dname
)));
2842 return NT_STATUS_NOT_A_DIRECTORY
;
2845 if (lp_store_dos_attributes(SNUM(conn
))) {
2847 file_set_dosmode(conn
, smb_dname
,
2848 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2853 if (lp_inherit_perms(SNUM(conn
))) {
2854 inherit_access_posix_acl(conn
, parent_dir
,
2855 smb_dname
->base_name
, mode
);
2856 need_re_stat
= true;
2861 * Check if high bits should have been set,
2862 * then (if bits are missing): add them.
2863 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2866 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2867 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2868 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2869 (smb_dname
->st
.st_ex_mode
|
2870 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2871 need_re_stat
= true;
2875 /* Change the owner if required. */
2876 if (lp_inherit_owner(SNUM(conn
))) {
2877 change_dir_owner_to_parent(conn
, parent_dir
,
2878 smb_dname
->base_name
,
2880 need_re_stat
= true;
2884 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2885 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2886 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2887 return map_nt_error_from_unix(errno
);
2891 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2892 smb_dname
->base_name
);
2894 return NT_STATUS_OK
;
2897 /****************************************************************************
2898 Open a directory from an NT SMB call.
2899 ****************************************************************************/
2901 static NTSTATUS
open_directory(connection_struct
*conn
,
2902 struct smb_request
*req
,
2903 struct smb_filename
*smb_dname
,
2905 uint32 share_access
,
2906 uint32 create_disposition
,
2907 uint32 create_options
,
2908 uint32 file_attributes
,
2910 files_struct
**result
)
2912 files_struct
*fsp
= NULL
;
2913 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2914 struct share_mode_lock
*lck
= NULL
;
2916 struct timespec mtimespec
;
2919 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2920 DEBUG(2, ("open_directory: %s is a stream name!\n",
2921 smb_fname_str_dbg(smb_dname
)));
2922 return NT_STATUS_NOT_A_DIRECTORY
;
2925 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2926 /* Ensure we have a directory attribute. */
2927 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2930 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2931 "share_access = 0x%x create_options = 0x%x, "
2932 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2933 smb_fname_str_dbg(smb_dname
),
2934 (unsigned int)access_mask
,
2935 (unsigned int)share_access
,
2936 (unsigned int)create_options
,
2937 (unsigned int)create_disposition
,
2938 (unsigned int)file_attributes
));
2940 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
2941 access_mask
, &access_mask
);
2942 if (!NT_STATUS_IS_OK(status
)) {
2943 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2944 "on file %s returned %s\n",
2945 smb_fname_str_dbg(smb_dname
),
2946 nt_errstr(status
)));
2950 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2951 !security_token_has_privilege(get_current_nttok(conn
),
2952 SEC_PRIV_SECURITY
)) {
2953 DEBUG(10, ("open_directory: open on %s "
2954 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2955 smb_fname_str_dbg(smb_dname
)));
2956 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2959 switch( create_disposition
) {
2963 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2966 info
= FILE_WAS_OPENED
;
2971 /* If directory exists error. If directory doesn't
2975 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
2976 DEBUG(2, ("open_directory: unable to create "
2977 "%s. Error was %s\n",
2978 smb_fname_str_dbg(smb_dname
),
2979 nt_errstr(status
)));
2983 status
= mkdir_internal(conn
, smb_dname
,
2986 if (!NT_STATUS_IS_OK(status
)) {
2987 DEBUG(2, ("open_directory: unable to create "
2988 "%s. Error was %s\n",
2989 smb_fname_str_dbg(smb_dname
),
2990 nt_errstr(status
)));
2994 info
= FILE_WAS_CREATED
;
2999 * If directory exists open. If directory doesn't
3004 status
= NT_STATUS_OK
;
3005 info
= FILE_WAS_OPENED
;
3007 status
= mkdir_internal(conn
, smb_dname
,
3010 if (NT_STATUS_IS_OK(status
)) {
3011 info
= FILE_WAS_CREATED
;
3013 /* Cope with create race. */
3014 if (!NT_STATUS_EQUAL(status
,
3015 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3016 DEBUG(2, ("open_directory: unable to create "
3017 "%s. Error was %s\n",
3018 smb_fname_str_dbg(smb_dname
),
3019 nt_errstr(status
)));
3022 info
= FILE_WAS_OPENED
;
3028 case FILE_SUPERSEDE
:
3029 case FILE_OVERWRITE
:
3030 case FILE_OVERWRITE_IF
:
3032 DEBUG(5,("open_directory: invalid create_disposition "
3033 "0x%x for directory %s\n",
3034 (unsigned int)create_disposition
,
3035 smb_fname_str_dbg(smb_dname
)));
3036 return NT_STATUS_INVALID_PARAMETER
;
3039 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3040 DEBUG(5,("open_directory: %s is not a directory !\n",
3041 smb_fname_str_dbg(smb_dname
)));
3042 return NT_STATUS_NOT_A_DIRECTORY
;
3045 if (info
== FILE_WAS_OPENED
) {
3046 status
= smbd_check_access_rights(conn
,
3050 if (!NT_STATUS_IS_OK(status
)) {
3051 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3052 "file %s failed with %s\n",
3053 smb_fname_str_dbg(smb_dname
),
3054 nt_errstr(status
)));
3059 status
= file_new(req
, conn
, &fsp
);
3060 if(!NT_STATUS_IS_OK(status
)) {
3065 * Setup the files_struct for it.
3068 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3069 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3070 fsp
->file_pid
= req
? req
->smbpid
: 0;
3071 fsp
->can_lock
= False
;
3072 fsp
->can_read
= False
;
3073 fsp
->can_write
= False
;
3075 fsp
->share_access
= share_access
;
3076 fsp
->fh
->private_options
= 0;
3078 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3080 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3081 fsp
->print_file
= NULL
;
3082 fsp
->modified
= False
;
3083 fsp
->oplock_type
= NO_OPLOCK
;
3084 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3085 fsp
->is_directory
= True
;
3086 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3087 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3088 if (!NT_STATUS_IS_OK(status
)) {
3089 file_free(req
, fsp
);
3093 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3096 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3098 /* POSIX allows us to open a directory with O_RDONLY. */
3099 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3101 if (!NT_STATUS_IS_OK(status
)) {
3102 DEBUG(5, ("open_directory: Could not open fd for "
3104 smb_fname_str_dbg(smb_dname
),
3105 nt_errstr(status
)));
3106 file_free(req
, fsp
);
3110 status
= vfs_stat_fsp(fsp
);
3111 if (!NT_STATUS_IS_OK(status
)) {
3113 file_free(req
, fsp
);
3117 /* Ensure there was no race condition. */
3118 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3119 DEBUG(5,("open_directory: stat struct differs for "
3121 smb_fname_str_dbg(smb_dname
)));
3123 file_free(req
, fsp
);
3124 return NT_STATUS_ACCESS_DENIED
;
3127 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3128 conn
->connectpath
, smb_dname
,
3132 DEBUG(0, ("open_directory: Could not get share mode lock for "
3133 "%s\n", smb_fname_str_dbg(smb_dname
)));
3135 file_free(req
, fsp
);
3136 return NT_STATUS_SHARING_VIOLATION
;
3139 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3140 access_mask
, share_access
,
3141 create_options
, &dir_existed
);
3143 if (!NT_STATUS_IS_OK(status
)) {
3146 file_free(req
, fsp
);
3150 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3151 req
? req
->mid
: 0, NO_OPLOCK
);
3153 /* For directories the delete on close bit at open time seems
3154 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3155 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3156 status
= can_set_delete_on_close(fsp
, 0);
3157 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3160 file_free(req
, fsp
);
3164 if (NT_STATUS_IS_OK(status
)) {
3165 /* Note that here we set the *inital* delete on close flag,
3166 not the regular one. The magic gets handled in close. */
3167 fsp
->initial_delete_on_close
= True
;
3178 return NT_STATUS_OK
;
3181 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3182 struct smb_filename
*smb_dname
)
3187 status
= SMB_VFS_CREATE_FILE(
3190 0, /* root_dir_fid */
3191 smb_dname
, /* fname */
3192 FILE_READ_ATTRIBUTES
, /* access_mask */
3193 FILE_SHARE_NONE
, /* share_access */
3194 FILE_CREATE
, /* create_disposition*/
3195 FILE_DIRECTORY_FILE
, /* create_options */
3196 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3197 0, /* oplock_request */
3198 0, /* allocation_size */
3199 0, /* private_flags */
3205 if (NT_STATUS_IS_OK(status
)) {
3206 close_file(req
, fsp
, NORMAL_CLOSE
);
3212 /****************************************************************************
3213 Receive notification that one of our open files has been renamed by another
3215 ****************************************************************************/
3217 void msg_file_was_renamed(struct messaging_context
*msg
,
3220 struct server_id server_id
,
3224 char *frm
= (char *)data
->data
;
3226 const char *sharepath
;
3227 const char *base_name
;
3228 const char *stream_name
;
3229 struct smb_filename
*smb_fname
= NULL
;
3230 size_t sp_len
, bn_len
;
3232 struct smbd_server_connection
*sconn
=
3233 talloc_get_type_abort(private_data
,
3234 struct smbd_server_connection
);
3236 if (data
->data
== NULL
3237 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3238 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3239 (int)data
->length
));
3243 /* Unpack the message. */
3244 pull_file_id_24(frm
, &id
);
3245 sharepath
= &frm
[24];
3246 sp_len
= strlen(sharepath
);
3247 base_name
= sharepath
+ sp_len
+ 1;
3248 bn_len
= strlen(base_name
);
3249 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3251 /* stream_name must always be NULL if there is no stream. */
3252 if (stream_name
[0] == '\0') {
3256 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3257 stream_name
, NULL
, &smb_fname
);
3258 if (!NT_STATUS_IS_OK(status
)) {
3262 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3264 sharepath
, smb_fname_str_dbg(smb_fname
),
3265 file_id_string_tos(&id
)));
3267 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3268 fsp
= file_find_di_next(fsp
)) {
3269 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3271 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3272 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3273 smb_fname_str_dbg(smb_fname
)));
3274 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3275 if (!NT_STATUS_IS_OK(status
)) {
3280 /* Now we have the complete path we can work out if this is
3281 actually within this share and adjust newname accordingly. */
3282 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3283 "not sharepath %s) "
3284 "%s from %s -> %s\n",
3285 fsp
->conn
->connectpath
,
3289 smb_fname_str_dbg(smb_fname
)));
3293 TALLOC_FREE(smb_fname
);
3298 * If a main file is opened for delete, all streams need to be checked for
3299 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3300 * If that works, delete them all by setting the delete on close and close.
3303 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3306 struct stream_struct
*stream_info
= NULL
;
3307 files_struct
**streams
= NULL
;
3309 unsigned int num_streams
= 0;
3310 TALLOC_CTX
*frame
= talloc_stackframe();
3313 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3314 &num_streams
, &stream_info
);
3316 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3317 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3318 DEBUG(10, ("no streams around\n"));
3320 return NT_STATUS_OK
;
3323 if (!NT_STATUS_IS_OK(status
)) {
3324 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3325 nt_errstr(status
)));
3329 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3332 if (num_streams
== 0) {
3334 return NT_STATUS_OK
;
3337 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3338 if (streams
== NULL
) {
3339 DEBUG(0, ("talloc failed\n"));
3340 status
= NT_STATUS_NO_MEMORY
;
3344 for (i
=0; i
<num_streams
; i
++) {
3345 struct smb_filename
*smb_fname
= NULL
;
3347 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3352 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3353 stream_info
[i
].name
,
3355 if (!NT_STATUS_IS_OK(status
)) {
3359 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3360 DEBUG(10, ("Unable to stat stream: %s\n",
3361 smb_fname_str_dbg(smb_fname
)));
3364 status
= SMB_VFS_CREATE_FILE(
3367 0, /* root_dir_fid */
3368 smb_fname
, /* fname */
3369 DELETE_ACCESS
, /* access_mask */
3370 (FILE_SHARE_READ
| /* share_access */
3371 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3372 FILE_OPEN
, /* create_disposition*/
3373 0, /* create_options */
3374 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3375 0, /* oplock_request */
3376 0, /* allocation_size */
3377 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3380 &streams
[i
], /* result */
3383 if (!NT_STATUS_IS_OK(status
)) {
3384 DEBUG(10, ("Could not open stream %s: %s\n",
3385 smb_fname_str_dbg(smb_fname
),
3386 nt_errstr(status
)));
3388 TALLOC_FREE(smb_fname
);
3391 TALLOC_FREE(smb_fname
);
3395 * don't touch the variable "status" beyond this point :-)
3398 for (i
-= 1 ; i
>= 0; i
--) {
3399 if (streams
[i
] == NULL
) {
3403 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3404 fsp_str_dbg(streams
[i
])));
3405 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3413 /*********************************************************************
3414 Create a default ACL by inheriting from the parent. If no inheritance
3415 from the parent available, don't set anything. This will leave the actual
3416 permissions the new file or directory already got from the filesystem
3417 as the NT ACL when read.
3418 *********************************************************************/
3420 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3422 TALLOC_CTX
*ctx
= talloc_tos();
3423 char *parent_name
= NULL
;
3424 struct security_descriptor
*parent_desc
= NULL
;
3425 NTSTATUS status
= NT_STATUS_OK
;
3426 struct security_descriptor
*psd
= NULL
;
3427 struct dom_sid
*owner_sid
= NULL
;
3428 struct dom_sid
*group_sid
= NULL
;
3429 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3430 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3431 bool inheritable_components
= false;
3434 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3435 return NT_STATUS_NO_MEMORY
;
3438 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3440 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3442 if (!NT_STATUS_IS_OK(status
)) {
3446 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3449 if (!inheritable_components
&& !inherit_owner
) {
3450 /* Nothing to inherit and not setting owner. */
3451 return NT_STATUS_OK
;
3454 /* Create an inherited descriptor from the parent. */
3456 if (DEBUGLEVEL
>= 10) {
3457 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3458 fsp_str_dbg(fsp
) ));
3459 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3462 /* Inherit from parent descriptor if "inherit owner" set. */
3463 if (inherit_owner
) {
3464 owner_sid
= parent_desc
->owner_sid
;
3465 group_sid
= parent_desc
->group_sid
;
3468 if (owner_sid
== NULL
) {
3469 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3471 if (group_sid
== NULL
) {
3472 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3475 status
= se_create_child_secdesc(ctx
,
3482 if (!NT_STATUS_IS_OK(status
)) {
3486 /* If inheritable_components == false,
3487 se_create_child_secdesc()
3488 creates a security desriptor with a NULL dacl
3489 entry, but with SEC_DESC_DACL_PRESENT. We need
3490 to remove that flag. */
3492 if (!inheritable_components
) {
3493 security_info_sent
&= ~SECINFO_DACL
;
3494 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3497 if (DEBUGLEVEL
>= 10) {
3498 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3499 fsp_str_dbg(fsp
) ));
3500 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3503 if (inherit_owner
) {
3504 /* We need to be root to force this. */
3507 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3510 if (inherit_owner
) {
3517 * Wrapper around open_file_ntcreate and open_directory
3520 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3521 struct smb_request
*req
,
3522 struct smb_filename
*smb_fname
,
3523 uint32_t access_mask
,
3524 uint32_t share_access
,
3525 uint32_t create_disposition
,
3526 uint32_t create_options
,
3527 uint32_t file_attributes
,
3528 uint32_t oplock_request
,
3529 uint64_t allocation_size
,
3530 uint32_t private_flags
,
3531 struct security_descriptor
*sd
,
3532 struct ea_list
*ea_list
,
3534 files_struct
**result
,
3537 int info
= FILE_WAS_OPENED
;
3538 files_struct
*base_fsp
= NULL
;
3539 files_struct
*fsp
= NULL
;
3542 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3543 "file_attributes = 0x%x, share_access = 0x%x, "
3544 "create_disposition = 0x%x create_options = 0x%x "
3545 "oplock_request = 0x%x private_flags = 0x%x "
3546 "ea_list = 0x%p, sd = 0x%p, "
3548 (unsigned int)access_mask
,
3549 (unsigned int)file_attributes
,
3550 (unsigned int)share_access
,
3551 (unsigned int)create_disposition
,
3552 (unsigned int)create_options
,
3553 (unsigned int)oplock_request
,
3554 (unsigned int)private_flags
,
3555 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3557 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3558 status
= NT_STATUS_NOT_SUPPORTED
;
3562 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3563 status
= NT_STATUS_INVALID_PARAMETER
;
3568 oplock_request
|= INTERNAL_OPEN_ONLY
;
3571 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3572 && (access_mask
& DELETE_ACCESS
)
3573 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3575 * We can't open a file with DELETE access if any of the
3576 * streams is open without FILE_SHARE_DELETE
3578 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3580 if (!NT_STATUS_IS_OK(status
)) {
3585 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3586 !security_token_has_privilege(get_current_nttok(conn
),
3587 SEC_PRIV_SECURITY
)) {
3588 DEBUG(10, ("create_file_unixpath: open on %s "
3589 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3590 smb_fname_str_dbg(smb_fname
)));
3591 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3595 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3596 && is_ntfs_stream_smb_fname(smb_fname
)
3597 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3598 uint32 base_create_disposition
;
3599 struct smb_filename
*smb_fname_base
= NULL
;
3601 if (create_options
& FILE_DIRECTORY_FILE
) {
3602 status
= NT_STATUS_NOT_A_DIRECTORY
;
3606 switch (create_disposition
) {
3608 base_create_disposition
= FILE_OPEN
;
3611 base_create_disposition
= FILE_OPEN_IF
;
3615 /* Create an smb_filename with stream_name == NULL. */
3616 status
= create_synthetic_smb_fname(talloc_tos(),
3617 smb_fname
->base_name
,
3620 if (!NT_STATUS_IS_OK(status
)) {
3624 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3625 DEBUG(10, ("Unable to stat stream: %s\n",
3626 smb_fname_str_dbg(smb_fname_base
)));
3629 /* Open the base file. */
3630 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3633 | FILE_SHARE_DELETE
,
3634 base_create_disposition
,
3635 0, 0, 0, 0, 0, NULL
, NULL
,
3637 TALLOC_FREE(smb_fname_base
);
3639 if (!NT_STATUS_IS_OK(status
)) {
3640 DEBUG(10, ("create_file_unixpath for base %s failed: "
3641 "%s\n", smb_fname
->base_name
,
3642 nt_errstr(status
)));
3645 /* we don't need to low level fd */
3650 * If it's a request for a directory open, deal with it separately.
3653 if (create_options
& FILE_DIRECTORY_FILE
) {
3655 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3656 status
= NT_STATUS_INVALID_PARAMETER
;
3660 /* Can't open a temp directory. IFS kit test. */
3661 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3662 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3663 status
= NT_STATUS_INVALID_PARAMETER
;
3668 * We will get a create directory here if the Win32
3669 * app specified a security descriptor in the
3670 * CreateDirectory() call.
3674 status
= open_directory(
3675 conn
, req
, smb_fname
, access_mask
, share_access
,
3676 create_disposition
, create_options
, file_attributes
,
3681 * Ordinary file case.
3684 status
= file_new(req
, conn
, &fsp
);
3685 if(!NT_STATUS_IS_OK(status
)) {
3689 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3690 if (!NT_STATUS_IS_OK(status
)) {
3696 * We're opening the stream element of a
3697 * base_fsp we already opened. Set up the
3700 fsp
->base_fsp
= base_fsp
;
3703 if (allocation_size
) {
3704 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3708 status
= open_file_ntcreate(conn
,
3720 if(!NT_STATUS_IS_OK(status
)) {
3721 file_free(req
, fsp
);
3725 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3727 /* A stream open never opens a directory */
3730 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3735 * Fail the open if it was explicitly a non-directory
3739 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3740 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3745 status
= open_directory(
3746 conn
, req
, smb_fname
, access_mask
,
3747 share_access
, create_disposition
,
3748 create_options
, file_attributes
,
3753 if (!NT_STATUS_IS_OK(status
)) {
3757 fsp
->base_fsp
= base_fsp
;
3759 if ((ea_list
!= NULL
) &&
3760 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3761 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3762 if (!NT_STATUS_IS_OK(status
)) {
3767 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3768 status
= NT_STATUS_ACCESS_DENIED
;
3772 /* Save the requested allocation size. */
3773 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3775 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3776 fsp
->initial_allocation_size
= smb_roundup(
3777 fsp
->conn
, allocation_size
);
3778 if (fsp
->is_directory
) {
3779 /* Can't set allocation size on a directory. */
3780 status
= NT_STATUS_ACCESS_DENIED
;
3783 if (vfs_allocate_file_space(
3784 fsp
, fsp
->initial_allocation_size
) == -1) {
3785 status
= NT_STATUS_DISK_FULL
;
3789 fsp
->initial_allocation_size
= smb_roundup(
3790 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3793 fsp
->initial_allocation_size
= 0;
3796 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3797 fsp
->base_fsp
== NULL
) {
3800 * According to the MS documentation, the only time the security
3801 * descriptor is applied to the opened file is iff we *created* the
3802 * file; an existing file stays the same.
3804 * Also, it seems (from observation) that you can open the file with
3805 * any access mask but you can still write the sd. We need to override
3806 * the granted access before we call set_sd
3807 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3810 uint32_t sec_info_sent
;
3811 uint32_t saved_access_mask
= fsp
->access_mask
;
3813 sec_info_sent
= get_sec_info(sd
);
3815 fsp
->access_mask
= FILE_GENERIC_ALL
;
3817 if (sec_info_sent
& (SECINFO_OWNER
|
3821 status
= set_sd(fsp
, sd
, sec_info_sent
);
3824 fsp
->access_mask
= saved_access_mask
;
3826 if (!NT_STATUS_IS_OK(status
)) {
3829 } else if (lp_inherit_acls(SNUM(conn
))) {
3830 /* Inherit from parent. Errors here are not fatal. */
3831 status
= inherit_new_acl(fsp
);
3832 if (!NT_STATUS_IS_OK(status
)) {
3833 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3835 nt_errstr(status
) ));
3840 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3843 if (pinfo
!= NULL
) {
3847 smb_fname
->st
= fsp
->fsp_name
->st
;
3849 return NT_STATUS_OK
;
3852 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3855 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3857 * The close_file below will close
3862 close_file(req
, fsp
, ERROR_CLOSE
);
3865 if (base_fsp
!= NULL
) {
3866 close_file(req
, base_fsp
, ERROR_CLOSE
);
3873 * Calculate the full path name given a relative fid.
3875 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3876 struct smb_request
*req
,
3877 uint16_t root_dir_fid
,
3878 const struct smb_filename
*smb_fname
,
3879 struct smb_filename
**smb_fname_out
)
3881 files_struct
*dir_fsp
;
3882 char *parent_fname
= NULL
;
3883 char *new_base_name
= NULL
;
3886 if (root_dir_fid
== 0 || !smb_fname
) {
3887 status
= NT_STATUS_INTERNAL_ERROR
;
3891 dir_fsp
= file_fsp(req
, root_dir_fid
);
3893 if (dir_fsp
== NULL
) {
3894 status
= NT_STATUS_INVALID_HANDLE
;
3898 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3899 status
= NT_STATUS_INVALID_HANDLE
;
3903 if (!dir_fsp
->is_directory
) {
3906 * Check to see if this is a mac fork of some kind.
3909 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3910 is_ntfs_stream_smb_fname(smb_fname
)) {
3911 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3916 we need to handle the case when we get a
3917 relative open relative to a file and the
3918 pathname is blank - this is a reopen!
3919 (hint from demyn plantenberg)
3922 status
= NT_STATUS_INVALID_HANDLE
;
3926 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3928 * We're at the toplevel dir, the final file name
3929 * must not contain ./, as this is filtered out
3930 * normally by srvstr_get_path and unix_convert
3931 * explicitly rejects paths containing ./.
3933 parent_fname
= talloc_strdup(talloc_tos(), "");
3934 if (parent_fname
== NULL
) {
3935 status
= NT_STATUS_NO_MEMORY
;
3939 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3942 * Copy in the base directory name.
3945 parent_fname
= talloc_array(talloc_tos(), char,
3947 if (parent_fname
== NULL
) {
3948 status
= NT_STATUS_NO_MEMORY
;
3951 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3955 * Ensure it ends in a '/'.
3956 * We used TALLOC_SIZE +2 to add space for the '/'.
3960 && (parent_fname
[dir_name_len
-1] != '\\')
3961 && (parent_fname
[dir_name_len
-1] != '/')) {
3962 parent_fname
[dir_name_len
] = '/';
3963 parent_fname
[dir_name_len
+1] = '\0';
3967 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3968 smb_fname
->base_name
);
3969 if (new_base_name
== NULL
) {
3970 status
= NT_STATUS_NO_MEMORY
;
3974 status
= filename_convert(req
,
3976 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3981 if (!NT_STATUS_IS_OK(status
)) {
3986 TALLOC_FREE(parent_fname
);
3987 TALLOC_FREE(new_base_name
);
3991 NTSTATUS
create_file_default(connection_struct
*conn
,
3992 struct smb_request
*req
,
3993 uint16_t root_dir_fid
,
3994 struct smb_filename
*smb_fname
,
3995 uint32_t access_mask
,
3996 uint32_t share_access
,
3997 uint32_t create_disposition
,
3998 uint32_t create_options
,
3999 uint32_t file_attributes
,
4000 uint32_t oplock_request
,
4001 uint64_t allocation_size
,
4002 uint32_t private_flags
,
4003 struct security_descriptor
*sd
,
4004 struct ea_list
*ea_list
,
4005 files_struct
**result
,
4008 int info
= FILE_WAS_OPENED
;
4009 files_struct
*fsp
= NULL
;
4011 bool stream_name
= false;
4013 DEBUG(10,("create_file: access_mask = 0x%x "
4014 "file_attributes = 0x%x, share_access = 0x%x, "
4015 "create_disposition = 0x%x create_options = 0x%x "
4016 "oplock_request = 0x%x "
4017 "private_flags = 0x%x "
4018 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4020 (unsigned int)access_mask
,
4021 (unsigned int)file_attributes
,
4022 (unsigned int)share_access
,
4023 (unsigned int)create_disposition
,
4024 (unsigned int)create_options
,
4025 (unsigned int)oplock_request
,
4026 (unsigned int)private_flags
,
4027 (unsigned int)root_dir_fid
,
4028 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4031 * Calculate the filename from the root_dir_if if necessary.
4034 if (root_dir_fid
!= 0) {
4035 struct smb_filename
*smb_fname_out
= NULL
;
4036 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4037 smb_fname
, &smb_fname_out
);
4038 if (!NT_STATUS_IS_OK(status
)) {
4041 smb_fname
= smb_fname_out
;
4045 * Check to see if this is a mac fork of some kind.
4048 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4050 enum FAKE_FILE_TYPE fake_file_type
;
4052 fake_file_type
= is_fake_file(smb_fname
);
4054 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4057 * Here we go! support for changing the disk quotas
4060 * We need to fake up to open this MAGIC QUOTA file
4061 * and return a valid FID.
4063 * w2k close this file directly after openening xp
4064 * also tries a QUERY_FILE_INFO on the file and then
4067 status
= open_fake_file(req
, conn
, req
->vuid
,
4068 fake_file_type
, smb_fname
,
4070 if (!NT_STATUS_IS_OK(status
)) {
4074 ZERO_STRUCT(smb_fname
->st
);
4078 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4079 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4084 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4086 smb_fname
->stream_name
= NULL
;
4087 /* We have to handle this error here. */
4088 if (create_options
& FILE_DIRECTORY_FILE
) {
4089 status
= NT_STATUS_NOT_A_DIRECTORY
;
4092 if (lp_posix_pathnames()) {
4093 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4095 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4098 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4099 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4104 status
= create_file_unixpath(
4105 conn
, req
, smb_fname
, access_mask
, share_access
,
4106 create_disposition
, create_options
, file_attributes
,
4107 oplock_request
, allocation_size
, private_flags
,
4111 if (!NT_STATUS_IS_OK(status
)) {
4116 DEBUG(10, ("create_file: info=%d\n", info
));
4119 if (pinfo
!= NULL
) {
4122 return NT_STATUS_OK
;
4125 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4128 close_file(req
, fsp
, ERROR_CLOSE
);