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
;
682 if (flags
& O_CREAT
) {
683 /* We don't want to write - but we must make sure that
684 O_CREAT doesn't create the file if we have write
685 access into the directory.
687 flags
&= ~(O_CREAT
|O_EXCL
);
688 local_flags
&= ~(O_CREAT
|O_EXCL
);
693 * This little piece of insanity is inspired by the
694 * fact that an NT client can open a file for O_RDONLY,
695 * but set the create disposition to FILE_EXISTS_TRUNCATE.
696 * If the client *can* write to the file, then it expects to
697 * truncate the file, even though it is opening for readonly.
698 * Quicken uses this stupid trick in backup file creation...
699 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
700 * for helping track this one down. It didn't bite us in 2.0.x
701 * as we always opened files read-write in that release. JRA.
704 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
705 DEBUG(10,("open_file: truncate requested on read-only open "
706 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
707 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
710 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
711 (!file_existed
&& (local_flags
& O_CREAT
)) ||
712 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
716 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
718 * We would block on opening a FIFO with no one else on the
719 * other end. Do what we used to do and add O_NONBLOCK to the
723 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
724 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
725 local_flags
|= O_NONBLOCK
;
729 /* Don't create files with Microsoft wildcard characters. */
732 * wildcard characters are allowed in stream names
733 * only test the basefilename
735 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
737 wild
= smb_fname
->base_name
;
739 if ((local_flags
& O_CREAT
) && !file_existed
&&
741 return NT_STATUS_OBJECT_NAME_INVALID
;
744 /* Can we access this file ? */
745 if (!fsp
->base_fsp
) {
746 /* Only do this check on non-stream open. */
748 status
= smbd_check_access_rights(conn
,
752 } else if (local_flags
& O_CREAT
){
753 status
= check_parent_access(conn
,
757 /* File didn't exist and no O_CREAT. */
758 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
760 if (!NT_STATUS_IS_OK(status
)) {
761 DEBUG(10,("open_file: "
765 "smbd_check_access_rights" :
766 "check_parent_access",
767 smb_fname_str_dbg(smb_fname
),
768 nt_errstr(status
) ));
773 /* Actually do the open */
774 status
= fd_open_atomic(conn
, fsp
, local_flags
,
775 unx_mode
, p_file_created
);
776 if (!NT_STATUS_IS_OK(status
)) {
777 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
778 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
779 nt_errstr(status
),local_flags
,flags
));
783 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
785 /* If we have an fd, this stat should succeed. */
786 DEBUG(0,("Error doing fstat on open file %s "
788 smb_fname_str_dbg(smb_fname
),
790 status
= map_nt_error_from_unix(errno
);
795 if (*p_file_created
) {
796 /* We created this file. */
798 bool need_re_stat
= false;
799 /* Do all inheritance work after we've
800 done a successful fstat call and filled
801 in the stat struct in fsp->fsp_name. */
803 /* Inherit the ACL if required */
804 if (lp_inherit_perms(SNUM(conn
))) {
805 inherit_access_posix_acl(conn
, parent_dir
,
806 smb_fname
->base_name
,
811 /* Change the owner if required. */
812 if (lp_inherit_owner(SNUM(conn
))) {
813 change_file_owner_to_parent(conn
, parent_dir
,
819 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
820 /* If we have an fd, this stat should succeed. */
822 DEBUG(0,("Error doing fstat on open file %s "
824 smb_fname_str_dbg(smb_fname
),
829 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
830 FILE_NOTIFY_CHANGE_FILE_NAME
,
831 smb_fname
->base_name
);
834 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
836 /* File must exist for a stat open. */
837 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
840 status
= smbd_check_access_rights(conn
,
845 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
847 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
848 /* This is a POSIX stat open for delete
849 * or rename on a symlink that points
851 DEBUG(10,("open_file: allowing POSIX "
852 "open on bad symlink %s\n",
853 smb_fname_str_dbg(smb_fname
)));
854 status
= NT_STATUS_OK
;
857 if (!NT_STATUS_IS_OK(status
)) {
858 DEBUG(10,("open_file: "
859 "smbd_check_access_rights on file "
861 smb_fname_str_dbg(smb_fname
),
862 nt_errstr(status
) ));
868 * POSIX allows read-only opens of directories. We don't
869 * want to do this (we use a different code path for this)
870 * so catch a directory open and return an EISDIR. JRA.
873 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
876 return NT_STATUS_FILE_IS_A_DIRECTORY
;
879 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
880 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
881 fsp
->file_pid
= req
? req
->smbpid
: 0;
882 fsp
->can_lock
= True
;
883 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
886 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
887 fsp
->print_file
= NULL
;
888 fsp
->modified
= False
;
889 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
890 fsp
->is_directory
= False
;
891 if (conn
->aio_write_behind_list
&&
892 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
893 conn
->case_sensitive
)) {
894 fsp
->aio_write_behind
= True
;
897 fsp
->wcp
= NULL
; /* Write cache pointer. */
899 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
900 conn
->session_info
->unix_info
->unix_name
,
901 smb_fname_str_dbg(smb_fname
),
902 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
903 conn
->num_files_open
));
909 /****************************************************************************
910 Check if we can open a file with a share mode.
911 Returns True if conflict, False if not.
912 ****************************************************************************/
914 static bool share_conflict(struct share_mode_entry
*entry
,
918 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
919 "entry->share_access = 0x%x, "
920 "entry->private_options = 0x%x\n",
921 (unsigned int)entry
->access_mask
,
922 (unsigned int)entry
->share_access
,
923 (unsigned int)entry
->private_options
));
925 if (server_id_is_disconnected(&entry
->pid
)) {
927 * note: cleanup should have been done by
928 * delay_for_batch_oplocks()
933 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
934 (unsigned int)access_mask
, (unsigned int)share_access
));
936 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
940 DELETE_ACCESS
)) == 0) {
941 DEBUG(10,("share_conflict: No conflict due to "
942 "entry->access_mask = 0x%x\n",
943 (unsigned int)entry
->access_mask
));
947 if ((access_mask
& (FILE_WRITE_DATA
|
951 DELETE_ACCESS
)) == 0) {
952 DEBUG(10,("share_conflict: No conflict due to "
953 "access_mask = 0x%x\n",
954 (unsigned int)access_mask
));
958 #if 1 /* JRA TEST - Superdebug. */
959 #define CHECK_MASK(num, am, right, sa, share) \
960 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
961 (unsigned int)(num), (unsigned int)(am), \
962 (unsigned int)(right), (unsigned int)(am)&(right) )); \
963 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
964 (unsigned int)(num), (unsigned int)(sa), \
965 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
966 if (((am) & (right)) && !((sa) & (share))) { \
967 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
968 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
969 (unsigned int)(share) )); \
973 #define CHECK_MASK(num, am, right, sa, share) \
974 if (((am) & (right)) && !((sa) & (share))) { \
975 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
976 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
977 (unsigned int)(share) )); \
982 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
983 share_access
, FILE_SHARE_WRITE
);
984 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
985 entry
->share_access
, FILE_SHARE_WRITE
);
987 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
988 share_access
, FILE_SHARE_READ
);
989 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
990 entry
->share_access
, FILE_SHARE_READ
);
992 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
993 share_access
, FILE_SHARE_DELETE
);
994 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
995 entry
->share_access
, FILE_SHARE_DELETE
);
997 DEBUG(10,("share_conflict: No conflict.\n"));
1001 #if defined(DEVELOPER)
1002 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1004 struct share_mode_entry
*share_entry
)
1006 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1009 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1013 if (is_deferred_open_entry(share_entry
) &&
1014 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
1015 char *str
= talloc_asprintf(talloc_tos(),
1016 "Got a deferred entry without a request: "
1018 share_mode_str(talloc_tos(), num
, share_entry
));
1022 if (!is_valid_share_mode_entry(share_entry
)) {
1026 fsp
= file_find_dif(sconn
, share_entry
->id
,
1027 share_entry
->share_file_id
);
1029 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1030 share_mode_str(talloc_tos(), num
, share_entry
) ));
1031 smb_panic("validate_my_share_entries: Cannot match a "
1032 "share entry with an open file\n");
1035 if (is_deferred_open_entry(share_entry
)) {
1039 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1040 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
1041 /* Someone has already written to it, but I haven't yet
1046 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1055 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1056 share_mode_str(talloc_tos(), num
, share_entry
) ));
1057 str
= talloc_asprintf(talloc_tos(),
1058 "validate_my_share_entries: "
1059 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1060 fsp
->fsp_name
->base_name
,
1061 (unsigned int)fsp
->oplock_type
,
1062 (unsigned int)share_entry
->op_type
);
1068 bool is_stat_open(uint32 access_mask
)
1070 const uint32_t stat_open_bits
=
1071 (SYNCHRONIZE_ACCESS
|
1072 FILE_READ_ATTRIBUTES
|
1073 FILE_WRITE_ATTRIBUTES
);
1075 return (((access_mask
& stat_open_bits
) != 0) &&
1076 ((access_mask
& ~stat_open_bits
) == 0));
1079 /****************************************************************************
1080 Deal with share modes
1081 Invarient: Share mode must be locked on entry and exit.
1082 Returns -1 on error, or number of share modes on success (may be zero).
1083 ****************************************************************************/
1085 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1086 struct share_mode_lock
*lck
,
1089 uint32 share_access
,
1090 uint32 create_options
,
1095 if(lck
->data
->num_share_modes
== 0) {
1096 return NT_STATUS_OK
;
1099 /* A delete on close prohibits everything */
1101 if (is_delete_on_close_set(lck
, name_hash
)) {
1103 * Check the delete on close token
1104 * is valid. It could have been left
1105 * after a server crash.
1107 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1108 if (!share_mode_stale_pid(lck
->data
, i
)) {
1110 *file_existed
= true;
1112 return NT_STATUS_DELETE_PENDING
;
1115 return NT_STATUS_OK
;
1118 if (is_stat_open(access_mask
)) {
1119 /* Stat open that doesn't trigger oplock breaks or share mode
1120 * checks... ! JRA. */
1121 return NT_STATUS_OK
;
1125 * Check if the share modes will give us access.
1128 #if defined(DEVELOPER)
1129 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1130 validate_my_share_entries(conn
->sconn
, i
,
1131 &lck
->data
->share_modes
[i
]);
1135 /* Now we check the share modes, after any oplock breaks. */
1136 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1138 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1142 /* someone else has a share lock on it, check to see if we can
1144 if (share_conflict(&lck
->data
->share_modes
[i
],
1145 access_mask
, share_access
)) {
1147 if (share_mode_stale_pid(lck
->data
, i
)) {
1151 *file_existed
= true;
1153 return NT_STATUS_SHARING_VIOLATION
;
1157 if (lck
->data
->num_share_modes
!= 0) {
1158 *file_existed
= true;
1161 return NT_STATUS_OK
;
1165 * Send a break message to the oplock holder and delay the open for
1169 static NTSTATUS
send_break_message(files_struct
*fsp
,
1170 struct share_mode_entry
*exclusive
,
1175 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1177 DEBUG(10, ("Sending break request to PID %s\n",
1178 procid_str_static(&exclusive
->pid
)));
1179 exclusive
->op_mid
= mid
;
1181 /* Create the message. */
1182 share_mode_entry_to_message(msg
, exclusive
);
1184 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1185 don't want this set in the share mode struct pointed to by lck. */
1187 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1188 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1189 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1192 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1193 MSG_SMB_BREAK_REQUEST
,
1195 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1196 if (!NT_STATUS_IS_OK(status
)) {
1197 DEBUG(3, ("Could not send oplock break message: %s\n",
1198 nt_errstr(status
)));
1205 * Return share_mode_entry pointers for :
1206 * 1). Batch oplock entry.
1207 * 2). Batch or exclusive oplock entry (may be identical to #1).
1208 * bool have_level2_oplock
1209 * bool have_no_oplock.
1210 * Do internal consistency checks on the share mode for a file.
1213 static void find_oplock_types(files_struct
*fsp
,
1215 const struct share_mode_lock
*lck
,
1216 struct share_mode_entry
**pp_batch
,
1217 struct share_mode_entry
**pp_ex_or_batch
,
1219 bool *got_no_oplock
)
1224 *pp_ex_or_batch
= NULL
;
1225 *got_level2
= false;
1226 *got_no_oplock
= false;
1228 /* Ignore stat or internal opens, as is done in
1229 delay_for_batch_oplocks() and
1230 delay_for_exclusive_oplocks().
1232 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1236 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1237 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1241 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1242 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1243 /* We ignore stat opens in the table - they
1244 always have NO_OPLOCK and never get or
1245 cause breaks. JRA. */
1249 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1250 /* batch - can only be one. */
1251 if (share_mode_stale_pid(lck
->data
, i
)) {
1252 DEBUG(10, ("Found stale batch oplock\n"));
1255 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1256 smb_panic("Bad batch oplock entry.");
1258 *pp_batch
= &lck
->data
->share_modes
[i
];
1261 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1262 if (share_mode_stale_pid(lck
->data
, i
)) {
1263 DEBUG(10, ("Found stale duplicate oplock\n"));
1266 /* Exclusive or batch - can only be one. */
1267 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1268 smb_panic("Bad exclusive or batch oplock entry.");
1270 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1273 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1274 if (*pp_batch
|| *pp_ex_or_batch
) {
1275 if (share_mode_stale_pid(lck
->data
, i
)) {
1276 DEBUG(10, ("Found stale LevelII "
1280 smb_panic("Bad levelII oplock entry.");
1285 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1286 if (*pp_batch
|| *pp_ex_or_batch
) {
1287 if (share_mode_stale_pid(lck
->data
, i
)) {
1288 DEBUG(10, ("Found stale NO_OPLOCK "
1292 smb_panic("Bad no oplock entry.");
1294 *got_no_oplock
= true;
1299 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1302 struct share_mode_entry
*batch_entry
)
1304 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1307 if (batch_entry
== NULL
) {
1311 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1314 * This could be achieved by sending a break message
1315 * to ourselves. Special considerations for files
1316 * with delete_on_close flag set!
1318 * For now we keep it simple and do not
1319 * allow delete on close for durable handles.
1324 /* Found a batch oplock */
1325 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1329 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1332 struct share_mode_entry
*ex_entry
)
1334 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1337 if (ex_entry
== NULL
) {
1341 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1343 * since only durable handles can get disconnected,
1344 * and we can only get durable handles with batch oplocks,
1345 * this should actually never be reached...
1350 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1354 static bool file_has_brlocks(files_struct
*fsp
)
1356 struct byte_range_lock
*br_lck
;
1358 br_lck
= brl_get_locks_readonly(fsp
);
1362 return br_lck
->num_locks
> 0 ? true : false;
1365 static void grant_fsp_oplock_type(files_struct
*fsp
,
1367 bool got_level2_oplock
,
1368 bool got_a_none_oplock
)
1370 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1371 lp_level2_oplocks(SNUM(fsp
->conn
));
1373 /* Start by granting what the client asked for,
1374 but ensure no SAMBA_PRIVATE bits can be set. */
1375 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1377 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1378 /* No oplocks on internal open. */
1379 fsp
->oplock_type
= NO_OPLOCK
;
1380 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1381 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1385 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1386 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1388 fsp
->oplock_type
= NO_OPLOCK
;
1391 if (is_stat_open(fsp
->access_mask
)) {
1392 /* Leave the value already set. */
1393 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1394 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1399 * Match what was requested (fsp->oplock_type) with
1400 * what was found in the existing share modes.
1403 if (got_a_none_oplock
) {
1404 fsp
->oplock_type
= NO_OPLOCK
;
1405 } else if (got_level2_oplock
) {
1406 if (fsp
->oplock_type
== NO_OPLOCK
||
1407 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1408 /* Store a level2 oplock, but don't tell the client */
1409 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1411 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1414 /* All share_mode_entries are placeholders or deferred.
1415 * Silently upgrade to fake levelII if the client didn't
1416 * ask for an oplock. */
1417 if (fsp
->oplock_type
== NO_OPLOCK
) {
1418 /* Store a level2 oplock, but don't tell the client */
1419 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1424 * Don't grant level2 to clients that don't want them
1425 * or if we've turned them off.
1427 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1428 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1431 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1432 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1435 static bool request_timed_out(struct timeval request_time
,
1436 struct timeval timeout
)
1438 struct timeval now
, end_time
;
1440 end_time
= timeval_sum(&request_time
, &timeout
);
1441 return (timeval_compare(&end_time
, &now
) < 0);
1444 /****************************************************************************
1445 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1446 ****************************************************************************/
1448 static void defer_open(struct share_mode_lock
*lck
,
1449 struct timeval request_time
,
1450 struct timeval timeout
,
1451 struct smb_request
*req
,
1452 struct deferred_open_record
*state
)
1454 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1456 /* Paranoia check */
1461 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1462 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1464 if (is_deferred_open_entry(e
) &&
1465 serverid_equal(&self
, &e
->pid
) &&
1466 (e
->op_mid
== req
->mid
)) {
1467 DEBUG(0, ("Trying to defer an already deferred "
1468 "request: mid=%llu, exiting\n",
1469 (unsigned long long)req
->mid
));
1471 exit_server("attempt to defer a deferred request");
1476 /* End paranoia check */
1478 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1479 "open entry for mid %llu\n",
1480 (unsigned int)request_time
.tv_sec
,
1481 (unsigned int)request_time
.tv_usec
,
1482 (unsigned long long)req
->mid
));
1484 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1485 state
->id
, (char *)state
, sizeof(*state
))) {
1487 exit_server("push_deferred_open_message_smb failed");
1490 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1495 /****************************************************************************
1496 On overwrite open ensure that the attributes match.
1497 ****************************************************************************/
1499 static bool open_match_attributes(connection_struct
*conn
,
1500 uint32 old_dos_attr
,
1501 uint32 new_dos_attr
,
1502 mode_t existing_unx_mode
,
1503 mode_t new_unx_mode
,
1504 mode_t
*returned_unx_mode
)
1506 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1508 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1509 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1511 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1512 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1513 *returned_unx_mode
= new_unx_mode
;
1515 *returned_unx_mode
= (mode_t
)0;
1518 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1519 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1520 "returned_unx_mode = 0%o\n",
1521 (unsigned int)old_dos_attr
,
1522 (unsigned int)existing_unx_mode
,
1523 (unsigned int)new_dos_attr
,
1524 (unsigned int)*returned_unx_mode
));
1526 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1527 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1528 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1529 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1533 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1534 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1535 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1542 /****************************************************************************
1543 Special FCB or DOS processing in the case of a sharing violation.
1544 Try and find a duplicated file handle.
1545 ****************************************************************************/
1547 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1548 connection_struct
*conn
,
1549 files_struct
*fsp_to_dup_into
,
1550 const struct smb_filename
*smb_fname
,
1555 uint32 share_access
,
1556 uint32 create_options
)
1560 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1561 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1563 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1564 fsp
= file_find_di_next(fsp
)) {
1566 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1567 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1568 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1569 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1570 (unsigned int)fsp
->file_pid
,
1571 (unsigned int)fsp
->fh
->private_options
,
1572 (unsigned int)fsp
->access_mask
));
1574 if (fsp
!= fsp_to_dup_into
&&
1575 fsp
->fh
->fd
!= -1 &&
1576 fsp
->vuid
== vuid
&&
1577 fsp
->file_pid
== file_pid
&&
1578 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1579 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1580 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1581 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1582 strequal(fsp
->fsp_name
->stream_name
,
1583 smb_fname
->stream_name
)) {
1584 DEBUG(10,("fcb_or_dos_open: file match\n"));
1590 return NT_STATUS_NOT_FOUND
;
1593 /* quite an insane set of semantics ... */
1594 if (is_executable(smb_fname
->base_name
) &&
1595 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1596 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1597 return NT_STATUS_INVALID_PARAMETER
;
1600 /* We need to duplicate this fsp. */
1601 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1602 create_options
, fsp_to_dup_into
);
1605 static void schedule_defer_open(struct share_mode_lock
*lck
,
1606 struct timeval request_time
,
1607 struct smb_request
*req
)
1609 struct deferred_open_record state
;
1611 /* This is a relative time, added to the absolute
1612 request_time value to get the absolute timeout time.
1613 Note that if this is the second or greater time we enter
1614 this codepath for this particular request mid then
1615 request_time is left as the absolute time of the *first*
1616 time this request mid was processed. This is what allows
1617 the request to eventually time out. */
1619 struct timeval timeout
;
1621 /* Normally the smbd we asked should respond within
1622 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1623 * the client did, give twice the timeout as a safety
1624 * measure here in case the other smbd is stuck
1625 * somewhere else. */
1627 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1629 /* Nothing actually uses state.delayed_for_oplocks
1630 but it's handy to differentiate in debug messages
1631 between a 30 second delay due to oplock break, and
1632 a 1 second delay for share mode conflicts. */
1634 state
.delayed_for_oplocks
= True
;
1635 state
.async_open
= false;
1636 state
.id
= lck
->data
->id
;
1638 if (!request_timed_out(request_time
, timeout
)) {
1639 defer_open(lck
, request_time
, timeout
, req
, &state
);
1643 /****************************************************************************
1644 Reschedule an open call that went asynchronous.
1645 ****************************************************************************/
1647 static void schedule_async_open(struct timeval request_time
,
1648 struct smb_request
*req
)
1650 struct deferred_open_record state
;
1651 struct timeval timeout
;
1653 timeout
= timeval_set(20, 0);
1656 state
.delayed_for_oplocks
= false;
1657 state
.async_open
= true;
1659 if (!request_timed_out(request_time
, timeout
)) {
1660 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1664 /****************************************************************************
1665 Work out what access_mask to use from what the client sent us.
1666 ****************************************************************************/
1668 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1669 connection_struct
*conn
,
1670 const struct smb_filename
*smb_fname
,
1672 uint32_t *p_access_mask
)
1674 struct security_descriptor
*sd
;
1675 uint32_t access_granted
;
1678 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1679 *p_access_mask
|= FILE_GENERIC_ALL
;
1680 return NT_STATUS_OK
;
1683 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1688 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1690 * File did not exist
1692 *p_access_mask
= FILE_GENERIC_ALL
;
1693 return NT_STATUS_OK
;
1695 if (!NT_STATUS_IS_OK(status
)) {
1696 DEBUG(10,("Could not get acl on file %s: %s\n",
1697 smb_fname_str_dbg(smb_fname
),
1698 nt_errstr(status
)));
1699 return NT_STATUS_ACCESS_DENIED
;
1703 * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
1704 * also takes care of owner WRITE_DAC and READ_CONTROL.
1706 status
= se_file_access_check(sd
,
1707 get_current_nttok(conn
),
1709 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1714 if (!NT_STATUS_IS_OK(status
)) {
1715 DEBUG(10, ("Access denied on file %s: "
1716 "when calculating maximum access\n",
1717 smb_fname_str_dbg(smb_fname
)));
1718 return NT_STATUS_ACCESS_DENIED
;
1720 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1722 if (!(access_granted
& DELETE_ACCESS
)) {
1723 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1724 *p_access_mask
|= DELETE_ACCESS
;
1728 return NT_STATUS_OK
;
1731 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1732 const struct smb_filename
*smb_fname
,
1734 uint32_t access_mask
,
1735 uint32_t *access_mask_out
)
1738 uint32_t orig_access_mask
= access_mask
;
1739 uint32_t rejected_share_access
;
1742 * Convert GENERIC bits to specific bits.
1745 se_map_generic(&access_mask
, &file_generic_mapping
);
1747 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1748 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1750 status
= smbd_calculate_maximum_allowed_access(
1751 conn
, smb_fname
, use_privs
, &access_mask
);
1753 if (!NT_STATUS_IS_OK(status
)) {
1757 access_mask
&= conn
->share_access
;
1760 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1762 if (rejected_share_access
) {
1763 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1764 "file %s: rejected by share access mask[0x%08X] "
1765 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1766 smb_fname_str_dbg(smb_fname
),
1768 orig_access_mask
, access_mask
,
1769 rejected_share_access
));
1770 return NT_STATUS_ACCESS_DENIED
;
1773 *access_mask_out
= access_mask
;
1774 return NT_STATUS_OK
;
1777 /****************************************************************************
1778 Remove the deferred open entry under lock.
1779 ****************************************************************************/
1781 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1782 struct server_id pid
)
1784 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1787 DEBUG(0, ("could not get share mode lock\n"));
1790 del_deferred_open_entry(lck
, mid
, pid
);
1794 /****************************************************************************
1795 Return true if this is a state pointer to an asynchronous create.
1796 ****************************************************************************/
1798 bool is_deferred_open_async(const void *ptr
)
1800 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1802 return state
->async_open
;
1805 static bool clear_ads(uint32_t create_disposition
)
1809 switch (create_disposition
) {
1810 case FILE_SUPERSEDE
:
1811 case FILE_OVERWRITE_IF
:
1812 case FILE_OVERWRITE
:
1821 static int disposition_to_open_flags(uint32_t create_disposition
)
1826 * Currently we're using FILE_SUPERSEDE as the same as
1827 * FILE_OVERWRITE_IF but they really are
1828 * different. FILE_SUPERSEDE deletes an existing file
1829 * (requiring delete access) then recreates it.
1832 switch (create_disposition
) {
1833 case FILE_SUPERSEDE
:
1834 case FILE_OVERWRITE_IF
:
1836 * If file exists replace/overwrite. If file doesn't
1839 ret
= O_CREAT
|O_TRUNC
;
1844 * If file exists open. If file doesn't exist error.
1849 case FILE_OVERWRITE
:
1851 * If file exists overwrite. If file doesn't exist
1859 * If file exists error. If file doesn't exist create.
1861 ret
= O_CREAT
|O_EXCL
;
1866 * If file exists open. If file doesn't exist create.
1874 static int calculate_open_access_flags(uint32_t access_mask
,
1876 uint32_t private_flags
)
1878 bool need_write
, need_read
;
1881 * Note that we ignore the append flag as append does not
1882 * mean the same thing under DOS and Unix.
1886 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
1887 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
));
1893 /* DENY_DOS opens are always underlying read-write on the
1894 file handle, no matter what the requested access mask
1898 ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
1899 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
1900 FILE_READ_EA
|FILE_EXECUTE
));
1908 /****************************************************************************
1909 Open a file with a share mode. Passed in an already created files_struct *.
1910 ****************************************************************************/
1912 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1913 struct smb_request
*req
,
1914 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1915 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1916 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1917 uint32 create_options
, /* options such as delete on close. */
1918 uint32 new_dos_attributes
, /* attributes used for new file. */
1919 int oplock_request
, /* internal Samba oplock codes. */
1920 /* Information (FILE_EXISTS etc.) */
1921 uint32_t private_flags
, /* Samba specific flags. */
1925 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1928 bool file_existed
= VALID_STAT(smb_fname
->st
);
1929 bool def_acl
= False
;
1930 bool posix_open
= False
;
1931 bool new_file_created
= False
;
1932 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1933 mode_t new_unx_mode
= (mode_t
)0;
1934 mode_t unx_mode
= (mode_t
)0;
1936 uint32 existing_dos_attributes
= 0;
1937 struct timeval request_time
= timeval_zero();
1938 struct share_mode_lock
*lck
= NULL
;
1939 uint32 open_access_mask
= access_mask
;
1942 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1944 if (conn
->printer
) {
1946 * Printers are handled completely differently.
1947 * Most of the passed parameters are ignored.
1951 *pinfo
= FILE_WAS_CREATED
;
1954 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1955 smb_fname_str_dbg(smb_fname
)));
1958 DEBUG(0,("open_file_ntcreate: printer open without "
1959 "an SMB request!\n"));
1960 return NT_STATUS_INTERNAL_ERROR
;
1963 return print_spool_open(fsp
, smb_fname
->base_name
,
1967 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1969 return NT_STATUS_NO_MEMORY
;
1972 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1974 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1975 new_dos_attributes
= 0;
1977 /* Windows allows a new file to be created and
1978 silently removes a FILE_ATTRIBUTE_DIRECTORY
1979 sent by the client. Do the same. */
1981 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1983 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1985 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1986 smb_fname
, parent_dir
);
1989 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1990 "access_mask=0x%x share_access=0x%x "
1991 "create_disposition = 0x%x create_options=0x%x "
1992 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1993 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1994 access_mask
, share_access
, create_disposition
,
1995 create_options
, (unsigned int)unx_mode
, oplock_request
,
1996 (unsigned int)private_flags
));
1998 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1999 DEBUG(0, ("No smb request but not an internal only open!\n"));
2000 return NT_STATUS_INTERNAL_ERROR
;
2004 * Only non-internal opens can be deferred at all
2009 if (get_deferred_open_message_state(req
,
2012 /* Remember the absolute time of the original
2013 request with this mid. We'll use it later to
2014 see if this has timed out. */
2016 /* If it was an async create retry, the file
2019 if (is_deferred_open_async(ptr
)) {
2020 SET_STAT_INVALID(smb_fname
->st
);
2021 file_existed
= false;
2023 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
2024 /* Remove the deferred open entry under lock. */
2025 remove_deferred_open_entry(
2026 state
->id
, req
->mid
,
2027 messaging_server_id(req
->sconn
->msg_ctx
));
2030 /* Ensure we don't reprocess this message. */
2031 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
2036 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2038 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2042 /* ignore any oplock requests if oplocks are disabled */
2043 if (!lp_oplocks(SNUM(conn
)) ||
2044 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2045 /* Mask off everything except the private Samba bits. */
2046 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2049 /* this is for OS/2 long file names - say we don't support them */
2050 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2051 /* OS/2 Workplace shell fix may be main code stream in a later
2053 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2055 if (use_nt_status()) {
2056 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2058 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2061 switch( create_disposition
) {
2063 /* If file exists open. If file doesn't exist error. */
2064 if (!file_existed
) {
2065 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2066 "requested for file %s and file "
2068 smb_fname_str_dbg(smb_fname
)));
2070 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2074 case FILE_OVERWRITE
:
2075 /* If file exists overwrite. If file doesn't exist
2077 if (!file_existed
) {
2078 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2079 "requested for file %s and file "
2081 smb_fname_str_dbg(smb_fname
) ));
2083 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2088 /* If file exists error. If file doesn't exist
2091 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2092 "requested for file %s and file "
2093 "already exists.\n",
2094 smb_fname_str_dbg(smb_fname
)));
2095 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2100 return map_nt_error_from_unix(errno
);
2104 case FILE_SUPERSEDE
:
2105 case FILE_OVERWRITE_IF
:
2109 return NT_STATUS_INVALID_PARAMETER
;
2112 flags2
= disposition_to_open_flags(create_disposition
);
2114 /* We only care about matching attributes on file exists and
2117 if (!posix_open
&& file_existed
&&
2118 ((create_disposition
== FILE_OVERWRITE
) ||
2119 (create_disposition
== FILE_OVERWRITE_IF
))) {
2120 if (!open_match_attributes(conn
, existing_dos_attributes
,
2122 smb_fname
->st
.st_ex_mode
,
2123 unx_mode
, &new_unx_mode
)) {
2124 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2125 "for file %s (%x %x) (0%o, 0%o)\n",
2126 smb_fname_str_dbg(smb_fname
),
2127 existing_dos_attributes
,
2129 (unsigned int)smb_fname
->st
.st_ex_mode
,
2130 (unsigned int)unx_mode
));
2132 return NT_STATUS_ACCESS_DENIED
;
2136 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2140 if (!NT_STATUS_IS_OK(status
)) {
2141 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2142 "on file %s returned %s\n",
2143 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2147 open_access_mask
= access_mask
;
2149 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2150 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2153 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2154 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2158 * Note that we ignore the append flag as append does not
2159 * mean the same thing under DOS and Unix.
2162 flags
= calculate_open_access_flags(access_mask
, oplock_request
,
2166 * Currently we only look at FILE_WRITE_THROUGH for create options.
2170 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2175 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2179 if (!posix_open
&& !CAN_WRITE(conn
)) {
2181 * We should really return a permission denied error if either
2182 * O_CREAT or O_TRUNC are set, but for compatibility with
2183 * older versions of Samba we just AND them out.
2185 flags2
&= ~(O_CREAT
|O_TRUNC
);
2189 * Ensure we can't write on a read-only share or file.
2192 if (flags
!= O_RDONLY
&& file_existed
&&
2193 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2194 DEBUG(5,("open_file_ntcreate: write access requested for "
2195 "file %s on read only %s\n",
2196 smb_fname_str_dbg(smb_fname
),
2197 !CAN_WRITE(conn
) ? "share" : "file" ));
2199 return NT_STATUS_ACCESS_DENIED
;
2202 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2203 fsp
->share_access
= share_access
;
2204 fsp
->fh
->private_options
= private_flags
;
2205 fsp
->access_mask
= open_access_mask
; /* We change this to the
2206 * requested access_mask after
2207 * the open is done. */
2208 fsp
->posix_open
= posix_open
;
2210 /* Ensure no SAMBA_PRIVATE bits can be set. */
2211 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2213 if (timeval_is_zero(&request_time
)) {
2214 request_time
= fsp
->open_time
;
2218 struct share_mode_entry
*batch_entry
= NULL
;
2219 struct share_mode_entry
*exclusive_entry
= NULL
;
2220 bool got_level2_oplock
= false;
2221 bool got_a_none_oplock
= false;
2224 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2225 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2227 lck
= get_share_mode_lock(talloc_tos(), id
,
2229 smb_fname
, &old_write_time
);
2231 DEBUG(0, ("Could not get share mode lock\n"));
2232 return NT_STATUS_SHARING_VIOLATION
;
2235 /* Get the types we need to examine. */
2236 find_oplock_types(fsp
,
2242 &got_a_none_oplock
);
2244 /* First pass - send break only on batch oplocks. */
2245 if ((req
!= NULL
) &&
2246 delay_for_batch_oplocks(fsp
,
2250 schedule_defer_open(lck
, request_time
, req
);
2252 return NT_STATUS_SHARING_VIOLATION
;
2255 /* Use the client requested access mask here, not the one we
2257 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2258 access_mask
, share_access
,
2259 create_options
, &file_existed
);
2261 if (NT_STATUS_IS_OK(status
)) {
2262 /* We might be going to allow this open. Check oplock
2264 /* Second pass - send break for both batch or
2265 * exclusive oplocks. */
2266 if ((req
!= NULL
) &&
2267 delay_for_exclusive_oplocks(
2272 schedule_defer_open(lck
, request_time
, req
);
2274 return NT_STATUS_SHARING_VIOLATION
;
2278 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2279 /* DELETE_PENDING is not deferred for a second */
2284 grant_fsp_oplock_type(fsp
,
2289 if (!NT_STATUS_IS_OK(status
)) {
2290 uint32 can_access_mask
;
2291 bool can_access
= True
;
2293 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2295 /* Check if this can be done with the deny_dos and fcb
2298 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2299 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2301 DEBUG(0, ("DOS open without an SMB "
2304 return NT_STATUS_INTERNAL_ERROR
;
2307 /* Use the client requested access mask here,
2308 * not the one we open with. */
2309 status
= fcb_or_dos_open(req
,
2320 if (NT_STATUS_IS_OK(status
)) {
2323 *pinfo
= FILE_WAS_OPENED
;
2325 return NT_STATUS_OK
;
2330 * This next line is a subtlety we need for
2331 * MS-Access. If a file open will fail due to share
2332 * permissions and also for security (access) reasons,
2333 * we need to return the access failed error, not the
2334 * share error. We can't open the file due to kernel
2335 * oplock deadlock (it's possible we failed above on
2336 * the open_mode_check()) so use a userspace check.
2339 if (flags
& O_RDWR
) {
2340 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2341 } else if (flags
& O_WRONLY
) {
2342 can_access_mask
= FILE_WRITE_DATA
;
2344 can_access_mask
= FILE_READ_DATA
;
2347 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2348 !CAN_WRITE(conn
)) ||
2349 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2352 can_access_mask
))) {
2357 * If we're returning a share violation, ensure we
2358 * cope with the braindead 1 second delay.
2361 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2362 lp_defer_sharing_violations()) {
2363 struct timeval timeout
;
2364 struct deferred_open_record state
;
2367 /* this is a hack to speed up torture tests
2369 timeout_usecs
= lp_parm_int(SNUM(conn
),
2370 "smbd","sharedelay",
2371 SHARING_VIOLATION_USEC_WAIT
);
2373 /* This is a relative time, added to the absolute
2374 request_time value to get the absolute timeout time.
2375 Note that if this is the second or greater time we enter
2376 this codepath for this particular request mid then
2377 request_time is left as the absolute time of the *first*
2378 time this request mid was processed. This is what allows
2379 the request to eventually time out. */
2381 timeout
= timeval_set(0, timeout_usecs
);
2383 /* Nothing actually uses state.delayed_for_oplocks
2384 but it's handy to differentiate in debug messages
2385 between a 30 second delay due to oplock break, and
2386 a 1 second delay for share mode conflicts. */
2388 state
.delayed_for_oplocks
= False
;
2389 state
.async_open
= false;
2393 && !request_timed_out(request_time
,
2395 defer_open(lck
, request_time
, timeout
,
2403 * We have detected a sharing violation here
2404 * so return the correct error code
2406 status
= NT_STATUS_SHARING_VIOLATION
;
2408 status
= NT_STATUS_ACCESS_DENIED
;
2414 * We exit this block with the share entry *locked*.....
2418 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2421 * Ensure we pay attention to default ACLs on directories if required.
2424 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2425 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2426 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2429 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2430 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2431 (unsigned int)flags
, (unsigned int)flags2
,
2432 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2433 (unsigned int)open_access_mask
));
2435 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2436 flags
|flags2
, unx_mode
, access_mask
,
2437 open_access_mask
, &new_file_created
);
2439 if (!NT_STATUS_IS_OK(fsp_open
)) {
2440 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2441 schedule_async_open(request_time
, req
);
2447 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2449 * The file did exist, but some other (local or NFS)
2450 * process either renamed/unlinked and re-created the
2451 * file with different dev/ino after we walked the path,
2452 * but before we did the open. We could retry the
2453 * open but it's a rare enough case it's easier to
2454 * just fail the open to prevent creating any problems
2455 * in the open file db having the wrong dev/ino key.
2459 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2460 "Old (dev=0x%llu, ino =0x%llu). "
2461 "New (dev=0x%llu, ino=0x%llu). Failing open "
2462 " with NT_STATUS_ACCESS_DENIED.\n",
2463 smb_fname_str_dbg(smb_fname
),
2464 (unsigned long long)saved_stat
.st_ex_dev
,
2465 (unsigned long long)saved_stat
.st_ex_ino
,
2466 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2467 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2468 return NT_STATUS_ACCESS_DENIED
;
2471 if (!file_existed
) {
2472 struct share_mode_entry
*batch_entry
= NULL
;
2473 struct share_mode_entry
*exclusive_entry
= NULL
;
2474 bool got_level2_oplock
= false;
2475 bool got_a_none_oplock
= false;
2476 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2479 * Deal with the race condition where two smbd's detect the
2480 * file doesn't exist and do the create at the same time. One
2481 * of them will win and set a share mode, the other (ie. this
2482 * one) should check if the requested share mode for this
2483 * create is allowed.
2487 * Now the file exists and fsp is successfully opened,
2488 * fsp->dev and fsp->inode are valid and should replace the
2489 * dev=0,inode=0 from a non existent file. Spotted by
2490 * Nadav Danieli <nadavd@exanet.com>. JRA.
2495 lck
= get_share_mode_lock(talloc_tos(), id
,
2497 smb_fname
, &old_write_time
);
2500 DEBUG(0, ("open_file_ntcreate: Could not get share "
2501 "mode lock for %s\n",
2502 smb_fname_str_dbg(smb_fname
)));
2504 return NT_STATUS_SHARING_VIOLATION
;
2507 /* Get the types we need to examine. */
2508 find_oplock_types(fsp
,
2514 &got_a_none_oplock
);
2516 /* First pass - send break only on batch oplocks. */
2517 if ((req
!= NULL
) &&
2518 delay_for_batch_oplocks(fsp
,
2522 schedule_defer_open(lck
, request_time
, req
);
2525 return NT_STATUS_SHARING_VIOLATION
;
2528 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2529 access_mask
, share_access
,
2530 create_options
, &file_existed
);
2532 if (NT_STATUS_IS_OK(status
)) {
2533 /* We might be going to allow this open. Check oplock
2535 /* Second pass - send break for both batch or
2536 * exclusive oplocks. */
2537 if ((req
!= NULL
) &&
2538 delay_for_exclusive_oplocks(
2543 schedule_defer_open(lck
, request_time
, req
);
2546 return NT_STATUS_SHARING_VIOLATION
;
2550 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2551 /* DELETE_PENDING is not deferred for a second */
2556 if (!NT_STATUS_IS_OK(status
)) {
2557 uint32 can_access_mask
;
2558 bool can_access
= True
;
2560 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2562 /* Check if this can be done with the deny_dos and fcb
2565 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2566 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2568 DEBUG(0, ("DOS open without an SMB "
2571 return NT_STATUS_INTERNAL_ERROR
;
2574 /* Use the client requested access mask here,
2575 * not the one we open with. */
2576 status
= fcb_or_dos_open(req
,
2587 if (NT_STATUS_IS_OK(status
)) {
2590 *pinfo
= FILE_WAS_OPENED
;
2592 return NT_STATUS_OK
;
2597 * This next line is a subtlety we need for
2598 * MS-Access. If a file open will fail due to share
2599 * permissions and also for security (access) reasons,
2600 * we need to return the access failed error, not the
2601 * share error. We can't open the file due to kernel
2602 * oplock deadlock (it's possible we failed above on
2603 * the open_mode_check()) so use a userspace check.
2606 if (flags
& O_RDWR
) {
2607 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2608 } else if (flags
& O_WRONLY
) {
2609 can_access_mask
= FILE_WRITE_DATA
;
2611 can_access_mask
= FILE_READ_DATA
;
2614 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2615 !CAN_WRITE(conn
)) ||
2616 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2619 can_access_mask
))) {
2624 * If we're returning a share violation, ensure we
2625 * cope with the braindead 1 second delay.
2628 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2629 lp_defer_sharing_violations()) {
2630 struct timeval timeout
;
2631 struct deferred_open_record state
;
2634 /* this is a hack to speed up torture tests
2636 timeout_usecs
= lp_parm_int(SNUM(conn
),
2637 "smbd","sharedelay",
2638 SHARING_VIOLATION_USEC_WAIT
);
2640 /* This is a relative time, added to the absolute
2641 request_time value to get the absolute timeout time.
2642 Note that if this is the second or greater time we enter
2643 this codepath for this particular request mid then
2644 request_time is left as the absolute time of the *first*
2645 time this request mid was processed. This is what allows
2646 the request to eventually time out. */
2648 timeout
= timeval_set(0, timeout_usecs
);
2650 /* Nothing actually uses state.delayed_for_oplocks
2651 but it's handy to differentiate in debug messages
2652 between a 30 second delay due to oplock break, and
2653 a 1 second delay for share mode conflicts. */
2655 state
.delayed_for_oplocks
= False
;
2656 state
.async_open
= false;
2660 && !request_timed_out(request_time
,
2662 defer_open(lck
, request_time
, timeout
,
2670 * We have detected a sharing violation here
2671 * so return the correct error code
2673 status
= NT_STATUS_SHARING_VIOLATION
;
2675 status
= NT_STATUS_ACCESS_DENIED
;
2680 grant_fsp_oplock_type(fsp
,
2686 * We exit this block with the share entry *locked*.....
2691 SMB_ASSERT(lck
!= NULL
);
2693 /* Delete streams if create_disposition requires it */
2694 if (!new_file_created
&& clear_ads(create_disposition
) &&
2695 !is_ntfs_stream_smb_fname(smb_fname
)) {
2696 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2697 if (!NT_STATUS_IS_OK(status
)) {
2704 /* note that we ignore failure for the following. It is
2705 basically a hack for NFS, and NFS will never set one of
2706 these only read them. Nobody but Samba can ever set a deny
2707 mode and we have already checked our more authoritative
2708 locking database for permission to set this deny mode. If
2709 the kernel refuses the operations then the kernel is wrong.
2710 note that GPFS supports it as well - jmcd */
2712 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2714 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2715 if(ret_flock
== -1 ){
2720 return NT_STATUS_SHARING_VIOLATION
;
2725 * At this point onwards, we can guarantee that the share entry
2726 * is locked, whether we created the file or not, and that the
2727 * deny mode is compatible with all current opens.
2731 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2732 * but we don't have to store this - just ignore it on access check.
2734 if (conn
->sconn
->using_smb2
) {
2736 * SMB2 doesn't return it (according to Microsoft tests).
2737 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2738 * File created with access = 0x7 (Read, Write, Delete)
2739 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2741 fsp
->access_mask
= access_mask
;
2743 /* But SMB1 does. */
2744 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2748 /* stat opens on existing files don't get oplocks. */
2749 if (is_stat_open(open_access_mask
)) {
2750 fsp
->oplock_type
= NO_OPLOCK
;
2754 if (new_file_created
) {
2755 info
= FILE_WAS_CREATED
;
2757 if (flags2
& O_TRUNC
) {
2758 info
= FILE_WAS_OVERWRITTEN
;
2760 info
= FILE_WAS_OPENED
;
2769 * Setup the oplock info in both the shared memory and
2773 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2774 if (!NT_STATUS_IS_OK(status
)) {
2776 * Could not get the kernel oplock or there are byte-range
2777 * locks on the file.
2779 fsp
->oplock_type
= NO_OPLOCK
;
2782 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2786 /* Handle strange delete on close create semantics. */
2787 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2789 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2791 if (!NT_STATUS_IS_OK(status
)) {
2792 /* Remember to delete the mode we just added. */
2793 del_share_mode(lck
, fsp
);
2798 /* Note that here we set the *inital* delete on close flag,
2799 not the regular one. The magic gets handled in close. */
2800 fsp
->initial_delete_on_close
= True
;
2803 if (info
!= FILE_WAS_OPENED
) {
2804 /* Files should be initially set as archive */
2805 if (lp_map_archive(SNUM(conn
)) ||
2806 lp_store_dos_attributes(SNUM(conn
))) {
2808 if (file_set_dosmode(conn
, smb_fname
,
2809 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2810 parent_dir
, true) == 0) {
2811 unx_mode
= smb_fname
->st
.st_ex_mode
;
2817 /* Determine sparse flag. */
2819 /* POSIX opens are sparse by default. */
2820 fsp
->is_sparse
= true;
2822 fsp
->is_sparse
= (file_existed
&&
2823 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2827 * Take care of inherited ACLs on created files - if default ACL not
2831 if (!posix_open
&& new_file_created
&& !def_acl
) {
2833 int saved_errno
= errno
; /* We might get ENOSYS in the next
2836 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2838 errno
= saved_errno
; /* Ignore ENOSYS */
2841 } else if (new_unx_mode
) {
2845 /* Attributes need changing. File already existed. */
2848 int saved_errno
= errno
; /* We might get ENOSYS in the
2850 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2852 if (ret
== -1 && errno
== ENOSYS
) {
2853 errno
= saved_errno
; /* Ignore ENOSYS */
2855 DEBUG(5, ("open_file_ntcreate: reset "
2856 "attributes of file %s to 0%o\n",
2857 smb_fname_str_dbg(smb_fname
),
2858 (unsigned int)new_unx_mode
));
2859 ret
= 0; /* Don't do the fchmod below. */
2864 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2865 DEBUG(5, ("open_file_ntcreate: failed to reset "
2866 "attributes of file %s to 0%o\n",
2867 smb_fname_str_dbg(smb_fname
),
2868 (unsigned int)new_unx_mode
));
2871 /* If this is a successful open, we must remove any deferred open
2874 del_deferred_open_entry(lck
, req
->mid
,
2875 messaging_server_id(req
->sconn
->msg_ctx
));
2879 return NT_STATUS_OK
;
2883 /****************************************************************************
2884 Open a file for for write to ensure that we can fchmod it.
2885 ****************************************************************************/
2887 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2888 struct smb_filename
*smb_fname
,
2889 files_struct
**result
)
2891 if (!VALID_STAT(smb_fname
->st
)) {
2892 return NT_STATUS_INVALID_PARAMETER
;
2895 return SMB_VFS_CREATE_FILE(
2898 0, /* root_dir_fid */
2899 smb_fname
, /* fname */
2900 FILE_WRITE_DATA
, /* access_mask */
2901 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2903 FILE_OPEN
, /* create_disposition*/
2904 0, /* create_options */
2905 0, /* file_attributes */
2906 INTERNAL_OPEN_ONLY
, /* oplock_request */
2907 0, /* allocation_size */
2908 0, /* private_flags */
2911 result
, /* result */
2915 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2916 struct smb_filename
*smb_dname
,
2917 uint32 file_attributes
)
2920 char *parent_dir
= NULL
;
2922 bool posix_open
= false;
2923 bool need_re_stat
= false;
2924 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2926 if (!CAN_WRITE(conn
) || (access_mask
& ~(conn
->share_access
))) {
2927 DEBUG(5,("mkdir_internal: failing share access "
2928 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2929 return NT_STATUS_ACCESS_DENIED
;
2932 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2934 return NT_STATUS_NO_MEMORY
;
2937 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2939 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2941 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2944 status
= check_parent_access(conn
,
2947 if(!NT_STATUS_IS_OK(status
)) {
2948 DEBUG(5,("mkdir_internal: check_parent_access "
2949 "on directory %s for path %s returned %s\n",
2951 smb_dname
->base_name
,
2952 nt_errstr(status
) ));
2956 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2957 return map_nt_error_from_unix(errno
);
2960 /* Ensure we're checking for a symlink here.... */
2961 /* We don't want to get caught by a symlink racer. */
2963 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2964 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2965 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2966 return map_nt_error_from_unix(errno
);
2969 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2970 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2971 smb_fname_str_dbg(smb_dname
)));
2972 return NT_STATUS_NOT_A_DIRECTORY
;
2975 if (lp_store_dos_attributes(SNUM(conn
))) {
2977 file_set_dosmode(conn
, smb_dname
,
2978 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2983 if (lp_inherit_perms(SNUM(conn
))) {
2984 inherit_access_posix_acl(conn
, parent_dir
,
2985 smb_dname
->base_name
, mode
);
2986 need_re_stat
= true;
2991 * Check if high bits should have been set,
2992 * then (if bits are missing): add them.
2993 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2996 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2997 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2998 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2999 (smb_dname
->st
.st_ex_mode
|
3000 (mode
& ~smb_dname
->st
.st_ex_mode
)));
3001 need_re_stat
= true;
3005 /* Change the owner if required. */
3006 if (lp_inherit_owner(SNUM(conn
))) {
3007 change_dir_owner_to_parent(conn
, parent_dir
,
3008 smb_dname
->base_name
,
3010 need_re_stat
= true;
3014 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
3015 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
3016 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
3017 return map_nt_error_from_unix(errno
);
3021 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
3022 smb_dname
->base_name
);
3024 return NT_STATUS_OK
;
3027 /****************************************************************************
3028 Open a directory from an NT SMB call.
3029 ****************************************************************************/
3031 static NTSTATUS
open_directory(connection_struct
*conn
,
3032 struct smb_request
*req
,
3033 struct smb_filename
*smb_dname
,
3035 uint32 share_access
,
3036 uint32 create_disposition
,
3037 uint32 create_options
,
3038 uint32 file_attributes
,
3040 files_struct
**result
)
3042 files_struct
*fsp
= NULL
;
3043 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
3044 struct share_mode_lock
*lck
= NULL
;
3046 struct timespec mtimespec
;
3049 if (is_ntfs_stream_smb_fname(smb_dname
)) {
3050 DEBUG(2, ("open_directory: %s is a stream name!\n",
3051 smb_fname_str_dbg(smb_dname
)));
3052 return NT_STATUS_NOT_A_DIRECTORY
;
3055 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
3056 /* Ensure we have a directory attribute. */
3057 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
3060 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
3061 "share_access = 0x%x create_options = 0x%x, "
3062 "create_disposition = 0x%x, file_attributes = 0x%x\n",
3063 smb_fname_str_dbg(smb_dname
),
3064 (unsigned int)access_mask
,
3065 (unsigned int)share_access
,
3066 (unsigned int)create_options
,
3067 (unsigned int)create_disposition
,
3068 (unsigned int)file_attributes
));
3070 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
3071 access_mask
, &access_mask
);
3072 if (!NT_STATUS_IS_OK(status
)) {
3073 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
3074 "on file %s returned %s\n",
3075 smb_fname_str_dbg(smb_dname
),
3076 nt_errstr(status
)));
3080 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3081 !security_token_has_privilege(get_current_nttok(conn
),
3082 SEC_PRIV_SECURITY
)) {
3083 DEBUG(10, ("open_directory: open on %s "
3084 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3085 smb_fname_str_dbg(smb_dname
)));
3086 return NT_STATUS_PRIVILEGE_NOT_HELD
;
3089 switch( create_disposition
) {
3093 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
3096 info
= FILE_WAS_OPENED
;
3101 /* If directory exists error. If directory doesn't
3105 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
3106 DEBUG(2, ("open_directory: unable to create "
3107 "%s. Error was %s\n",
3108 smb_fname_str_dbg(smb_dname
),
3109 nt_errstr(status
)));
3113 status
= mkdir_internal(conn
, smb_dname
,
3116 if (!NT_STATUS_IS_OK(status
)) {
3117 DEBUG(2, ("open_directory: unable to create "
3118 "%s. Error was %s\n",
3119 smb_fname_str_dbg(smb_dname
),
3120 nt_errstr(status
)));
3124 info
= FILE_WAS_CREATED
;
3129 * If directory exists open. If directory doesn't
3134 status
= NT_STATUS_OK
;
3135 info
= FILE_WAS_OPENED
;
3137 status
= mkdir_internal(conn
, smb_dname
,
3140 if (NT_STATUS_IS_OK(status
)) {
3141 info
= FILE_WAS_CREATED
;
3143 /* Cope with create race. */
3144 if (!NT_STATUS_EQUAL(status
,
3145 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3146 DEBUG(2, ("open_directory: unable to create "
3147 "%s. Error was %s\n",
3148 smb_fname_str_dbg(smb_dname
),
3149 nt_errstr(status
)));
3152 info
= FILE_WAS_OPENED
;
3158 case FILE_SUPERSEDE
:
3159 case FILE_OVERWRITE
:
3160 case FILE_OVERWRITE_IF
:
3162 DEBUG(5,("open_directory: invalid create_disposition "
3163 "0x%x for directory %s\n",
3164 (unsigned int)create_disposition
,
3165 smb_fname_str_dbg(smb_dname
)));
3166 return NT_STATUS_INVALID_PARAMETER
;
3169 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3170 DEBUG(5,("open_directory: %s is not a directory !\n",
3171 smb_fname_str_dbg(smb_dname
)));
3172 return NT_STATUS_NOT_A_DIRECTORY
;
3175 if (info
== FILE_WAS_OPENED
) {
3176 status
= smbd_check_access_rights(conn
,
3180 if (!NT_STATUS_IS_OK(status
)) {
3181 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3182 "file %s failed with %s\n",
3183 smb_fname_str_dbg(smb_dname
),
3184 nt_errstr(status
)));
3189 status
= file_new(req
, conn
, &fsp
);
3190 if(!NT_STATUS_IS_OK(status
)) {
3195 * Setup the files_struct for it.
3198 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3199 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3200 fsp
->file_pid
= req
? req
->smbpid
: 0;
3201 fsp
->can_lock
= False
;
3202 fsp
->can_read
= False
;
3203 fsp
->can_write
= False
;
3205 fsp
->share_access
= share_access
;
3206 fsp
->fh
->private_options
= 0;
3208 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3210 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3211 fsp
->print_file
= NULL
;
3212 fsp
->modified
= False
;
3213 fsp
->oplock_type
= NO_OPLOCK
;
3214 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3215 fsp
->is_directory
= True
;
3216 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3217 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3218 if (!NT_STATUS_IS_OK(status
)) {
3219 file_free(req
, fsp
);
3223 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3226 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3228 /* POSIX allows us to open a directory with O_RDONLY. */
3229 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3231 if (!NT_STATUS_IS_OK(status
)) {
3232 DEBUG(5, ("open_directory: Could not open fd for "
3234 smb_fname_str_dbg(smb_dname
),
3235 nt_errstr(status
)));
3236 file_free(req
, fsp
);
3240 status
= vfs_stat_fsp(fsp
);
3241 if (!NT_STATUS_IS_OK(status
)) {
3243 file_free(req
, fsp
);
3247 /* Ensure there was no race condition. */
3248 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3249 DEBUG(5,("open_directory: stat struct differs for "
3251 smb_fname_str_dbg(smb_dname
)));
3253 file_free(req
, fsp
);
3254 return NT_STATUS_ACCESS_DENIED
;
3257 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3258 conn
->connectpath
, smb_dname
,
3262 DEBUG(0, ("open_directory: Could not get share mode lock for "
3263 "%s\n", smb_fname_str_dbg(smb_dname
)));
3265 file_free(req
, fsp
);
3266 return NT_STATUS_SHARING_VIOLATION
;
3269 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3270 access_mask
, share_access
,
3271 create_options
, &dir_existed
);
3273 if (!NT_STATUS_IS_OK(status
)) {
3276 file_free(req
, fsp
);
3280 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3281 req
? req
->mid
: 0, NO_OPLOCK
);
3283 /* For directories the delete on close bit at open time seems
3284 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3285 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3286 status
= can_set_delete_on_close(fsp
, 0);
3287 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3290 file_free(req
, fsp
);
3294 if (NT_STATUS_IS_OK(status
)) {
3295 /* Note that here we set the *inital* delete on close flag,
3296 not the regular one. The magic gets handled in close. */
3297 fsp
->initial_delete_on_close
= True
;
3308 return NT_STATUS_OK
;
3311 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3312 struct smb_filename
*smb_dname
)
3317 status
= SMB_VFS_CREATE_FILE(
3320 0, /* root_dir_fid */
3321 smb_dname
, /* fname */
3322 FILE_READ_ATTRIBUTES
, /* access_mask */
3323 FILE_SHARE_NONE
, /* share_access */
3324 FILE_CREATE
, /* create_disposition*/
3325 FILE_DIRECTORY_FILE
, /* create_options */
3326 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3327 0, /* oplock_request */
3328 0, /* allocation_size */
3329 0, /* private_flags */
3335 if (NT_STATUS_IS_OK(status
)) {
3336 close_file(req
, fsp
, NORMAL_CLOSE
);
3342 /****************************************************************************
3343 Receive notification that one of our open files has been renamed by another
3345 ****************************************************************************/
3347 void msg_file_was_renamed(struct messaging_context
*msg
,
3350 struct server_id server_id
,
3354 char *frm
= (char *)data
->data
;
3356 const char *sharepath
;
3357 const char *base_name
;
3358 const char *stream_name
;
3359 struct smb_filename
*smb_fname
= NULL
;
3360 size_t sp_len
, bn_len
;
3362 struct smbd_server_connection
*sconn
=
3363 talloc_get_type_abort(private_data
,
3364 struct smbd_server_connection
);
3366 if (data
->data
== NULL
3367 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3368 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3369 (int)data
->length
));
3373 /* Unpack the message. */
3374 pull_file_id_24(frm
, &id
);
3375 sharepath
= &frm
[24];
3376 sp_len
= strlen(sharepath
);
3377 base_name
= sharepath
+ sp_len
+ 1;
3378 bn_len
= strlen(base_name
);
3379 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3381 /* stream_name must always be NULL if there is no stream. */
3382 if (stream_name
[0] == '\0') {
3386 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3387 stream_name
, NULL
, &smb_fname
);
3388 if (!NT_STATUS_IS_OK(status
)) {
3392 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3394 sharepath
, smb_fname_str_dbg(smb_fname
),
3395 file_id_string_tos(&id
)));
3397 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3398 fsp
= file_find_di_next(fsp
)) {
3399 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3401 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3402 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3403 smb_fname_str_dbg(smb_fname
)));
3404 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3405 if (!NT_STATUS_IS_OK(status
)) {
3410 /* Now we have the complete path we can work out if this is
3411 actually within this share and adjust newname accordingly. */
3412 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3413 "not sharepath %s) "
3414 "%s from %s -> %s\n",
3415 fsp
->conn
->connectpath
,
3419 smb_fname_str_dbg(smb_fname
)));
3423 TALLOC_FREE(smb_fname
);
3428 * If a main file is opened for delete, all streams need to be checked for
3429 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3430 * If that works, delete them all by setting the delete on close and close.
3433 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3436 struct stream_struct
*stream_info
= NULL
;
3437 files_struct
**streams
= NULL
;
3439 unsigned int num_streams
= 0;
3440 TALLOC_CTX
*frame
= talloc_stackframe();
3443 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3444 &num_streams
, &stream_info
);
3446 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3447 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3448 DEBUG(10, ("no streams around\n"));
3450 return NT_STATUS_OK
;
3453 if (!NT_STATUS_IS_OK(status
)) {
3454 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3455 nt_errstr(status
)));
3459 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3462 if (num_streams
== 0) {
3464 return NT_STATUS_OK
;
3467 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3468 if (streams
== NULL
) {
3469 DEBUG(0, ("talloc failed\n"));
3470 status
= NT_STATUS_NO_MEMORY
;
3474 for (i
=0; i
<num_streams
; i
++) {
3475 struct smb_filename
*smb_fname
= NULL
;
3477 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3482 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3483 stream_info
[i
].name
,
3485 if (!NT_STATUS_IS_OK(status
)) {
3489 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3490 DEBUG(10, ("Unable to stat stream: %s\n",
3491 smb_fname_str_dbg(smb_fname
)));
3494 status
= SMB_VFS_CREATE_FILE(
3497 0, /* root_dir_fid */
3498 smb_fname
, /* fname */
3499 DELETE_ACCESS
, /* access_mask */
3500 (FILE_SHARE_READ
| /* share_access */
3501 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3502 FILE_OPEN
, /* create_disposition*/
3503 0, /* create_options */
3504 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3505 0, /* oplock_request */
3506 0, /* allocation_size */
3507 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3510 &streams
[i
], /* result */
3513 if (!NT_STATUS_IS_OK(status
)) {
3514 DEBUG(10, ("Could not open stream %s: %s\n",
3515 smb_fname_str_dbg(smb_fname
),
3516 nt_errstr(status
)));
3518 TALLOC_FREE(smb_fname
);
3521 TALLOC_FREE(smb_fname
);
3525 * don't touch the variable "status" beyond this point :-)
3528 for (i
-= 1 ; i
>= 0; i
--) {
3529 if (streams
[i
] == NULL
) {
3533 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3534 fsp_str_dbg(streams
[i
])));
3535 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3543 /*********************************************************************
3544 Create a default ACL by inheriting from the parent. If no inheritance
3545 from the parent available, don't set anything. This will leave the actual
3546 permissions the new file or directory already got from the filesystem
3547 as the NT ACL when read.
3548 *********************************************************************/
3550 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3552 TALLOC_CTX
*ctx
= talloc_tos();
3553 char *parent_name
= NULL
;
3554 struct security_descriptor
*parent_desc
= NULL
;
3555 NTSTATUS status
= NT_STATUS_OK
;
3556 struct security_descriptor
*psd
= NULL
;
3557 struct dom_sid
*owner_sid
= NULL
;
3558 struct dom_sid
*group_sid
= NULL
;
3559 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3560 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3561 bool inheritable_components
= false;
3564 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3565 return NT_STATUS_NO_MEMORY
;
3568 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3570 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3572 if (!NT_STATUS_IS_OK(status
)) {
3576 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3579 if (!inheritable_components
&& !inherit_owner
) {
3580 /* Nothing to inherit and not setting owner. */
3581 return NT_STATUS_OK
;
3584 /* Create an inherited descriptor from the parent. */
3586 if (DEBUGLEVEL
>= 10) {
3587 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3588 fsp_str_dbg(fsp
) ));
3589 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3592 /* Inherit from parent descriptor if "inherit owner" set. */
3593 if (inherit_owner
) {
3594 owner_sid
= parent_desc
->owner_sid
;
3595 group_sid
= parent_desc
->group_sid
;
3598 if (owner_sid
== NULL
) {
3599 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3601 if (group_sid
== NULL
) {
3602 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3605 status
= se_create_child_secdesc(ctx
,
3612 if (!NT_STATUS_IS_OK(status
)) {
3616 /* If inheritable_components == false,
3617 se_create_child_secdesc()
3618 creates a security desriptor with a NULL dacl
3619 entry, but with SEC_DESC_DACL_PRESENT. We need
3620 to remove that flag. */
3622 if (!inheritable_components
) {
3623 security_info_sent
&= ~SECINFO_DACL
;
3624 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3627 if (DEBUGLEVEL
>= 10) {
3628 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3629 fsp_str_dbg(fsp
) ));
3630 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3633 if (inherit_owner
) {
3634 /* We need to be root to force this. */
3637 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3640 if (inherit_owner
) {
3647 * Wrapper around open_file_ntcreate and open_directory
3650 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3651 struct smb_request
*req
,
3652 struct smb_filename
*smb_fname
,
3653 uint32_t access_mask
,
3654 uint32_t share_access
,
3655 uint32_t create_disposition
,
3656 uint32_t create_options
,
3657 uint32_t file_attributes
,
3658 uint32_t oplock_request
,
3659 uint64_t allocation_size
,
3660 uint32_t private_flags
,
3661 struct security_descriptor
*sd
,
3662 struct ea_list
*ea_list
,
3664 files_struct
**result
,
3667 int info
= FILE_WAS_OPENED
;
3668 files_struct
*base_fsp
= NULL
;
3669 files_struct
*fsp
= NULL
;
3672 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3673 "file_attributes = 0x%x, share_access = 0x%x, "
3674 "create_disposition = 0x%x create_options = 0x%x "
3675 "oplock_request = 0x%x private_flags = 0x%x "
3676 "ea_list = 0x%p, sd = 0x%p, "
3678 (unsigned int)access_mask
,
3679 (unsigned int)file_attributes
,
3680 (unsigned int)share_access
,
3681 (unsigned int)create_disposition
,
3682 (unsigned int)create_options
,
3683 (unsigned int)oplock_request
,
3684 (unsigned int)private_flags
,
3685 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3687 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3688 status
= NT_STATUS_NOT_SUPPORTED
;
3692 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3693 status
= NT_STATUS_INVALID_PARAMETER
;
3698 oplock_request
|= INTERNAL_OPEN_ONLY
;
3701 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3702 && (access_mask
& DELETE_ACCESS
)
3703 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3705 * We can't open a file with DELETE access if any of the
3706 * streams is open without FILE_SHARE_DELETE
3708 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3710 if (!NT_STATUS_IS_OK(status
)) {
3715 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3716 !security_token_has_privilege(get_current_nttok(conn
),
3717 SEC_PRIV_SECURITY
)) {
3718 DEBUG(10, ("create_file_unixpath: open on %s "
3719 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3720 smb_fname_str_dbg(smb_fname
)));
3721 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3725 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3726 && is_ntfs_stream_smb_fname(smb_fname
)
3727 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3728 uint32 base_create_disposition
;
3729 struct smb_filename
*smb_fname_base
= NULL
;
3731 if (create_options
& FILE_DIRECTORY_FILE
) {
3732 status
= NT_STATUS_NOT_A_DIRECTORY
;
3736 switch (create_disposition
) {
3738 base_create_disposition
= FILE_OPEN
;
3741 base_create_disposition
= FILE_OPEN_IF
;
3745 /* Create an smb_filename with stream_name == NULL. */
3746 status
= create_synthetic_smb_fname(talloc_tos(),
3747 smb_fname
->base_name
,
3750 if (!NT_STATUS_IS_OK(status
)) {
3754 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3755 DEBUG(10, ("Unable to stat stream: %s\n",
3756 smb_fname_str_dbg(smb_fname_base
)));
3759 /* Open the base file. */
3760 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3763 | FILE_SHARE_DELETE
,
3764 base_create_disposition
,
3765 0, 0, 0, 0, 0, NULL
, NULL
,
3767 TALLOC_FREE(smb_fname_base
);
3769 if (!NT_STATUS_IS_OK(status
)) {
3770 DEBUG(10, ("create_file_unixpath for base %s failed: "
3771 "%s\n", smb_fname
->base_name
,
3772 nt_errstr(status
)));
3775 /* we don't need to low level fd */
3780 * If it's a request for a directory open, deal with it separately.
3783 if (create_options
& FILE_DIRECTORY_FILE
) {
3785 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3786 status
= NT_STATUS_INVALID_PARAMETER
;
3790 /* Can't open a temp directory. IFS kit test. */
3791 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3792 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3793 status
= NT_STATUS_INVALID_PARAMETER
;
3798 * We will get a create directory here if the Win32
3799 * app specified a security descriptor in the
3800 * CreateDirectory() call.
3804 status
= open_directory(
3805 conn
, req
, smb_fname
, access_mask
, share_access
,
3806 create_disposition
, create_options
, file_attributes
,
3811 * Ordinary file case.
3814 status
= file_new(req
, conn
, &fsp
);
3815 if(!NT_STATUS_IS_OK(status
)) {
3819 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3820 if (!NT_STATUS_IS_OK(status
)) {
3826 * We're opening the stream element of a
3827 * base_fsp we already opened. Set up the
3830 fsp
->base_fsp
= base_fsp
;
3833 if (allocation_size
) {
3834 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3838 status
= open_file_ntcreate(conn
,
3850 if(!NT_STATUS_IS_OK(status
)) {
3851 file_free(req
, fsp
);
3855 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3857 /* A stream open never opens a directory */
3860 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3865 * Fail the open if it was explicitly a non-directory
3869 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3870 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3875 status
= open_directory(
3876 conn
, req
, smb_fname
, access_mask
,
3877 share_access
, create_disposition
,
3878 create_options
, file_attributes
,
3883 if (!NT_STATUS_IS_OK(status
)) {
3887 fsp
->base_fsp
= base_fsp
;
3889 if ((ea_list
!= NULL
) &&
3890 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3891 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3892 if (!NT_STATUS_IS_OK(status
)) {
3897 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3898 status
= NT_STATUS_ACCESS_DENIED
;
3902 /* Save the requested allocation size. */
3903 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3905 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3906 fsp
->initial_allocation_size
= smb_roundup(
3907 fsp
->conn
, allocation_size
);
3908 if (fsp
->is_directory
) {
3909 /* Can't set allocation size on a directory. */
3910 status
= NT_STATUS_ACCESS_DENIED
;
3913 if (vfs_allocate_file_space(
3914 fsp
, fsp
->initial_allocation_size
) == -1) {
3915 status
= NT_STATUS_DISK_FULL
;
3919 fsp
->initial_allocation_size
= smb_roundup(
3920 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3923 fsp
->initial_allocation_size
= 0;
3926 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3927 fsp
->base_fsp
== NULL
) {
3930 * According to the MS documentation, the only time the security
3931 * descriptor is applied to the opened file is iff we *created* the
3932 * file; an existing file stays the same.
3934 * Also, it seems (from observation) that you can open the file with
3935 * any access mask but you can still write the sd. We need to override
3936 * the granted access before we call set_sd
3937 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3940 uint32_t sec_info_sent
;
3941 uint32_t saved_access_mask
= fsp
->access_mask
;
3943 sec_info_sent
= get_sec_info(sd
);
3945 fsp
->access_mask
= FILE_GENERIC_ALL
;
3947 if (sec_info_sent
& (SECINFO_OWNER
|
3951 status
= set_sd(fsp
, sd
, sec_info_sent
);
3954 fsp
->access_mask
= saved_access_mask
;
3956 if (!NT_STATUS_IS_OK(status
)) {
3959 } else if (lp_inherit_acls(SNUM(conn
))) {
3960 /* Inherit from parent. Errors here are not fatal. */
3961 status
= inherit_new_acl(fsp
);
3962 if (!NT_STATUS_IS_OK(status
)) {
3963 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3965 nt_errstr(status
) ));
3970 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3973 if (pinfo
!= NULL
) {
3977 smb_fname
->st
= fsp
->fsp_name
->st
;
3979 return NT_STATUS_OK
;
3982 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3985 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3987 * The close_file below will close
3992 close_file(req
, fsp
, ERROR_CLOSE
);
3995 if (base_fsp
!= NULL
) {
3996 close_file(req
, base_fsp
, ERROR_CLOSE
);
4003 * Calculate the full path name given a relative fid.
4005 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
4006 struct smb_request
*req
,
4007 uint16_t root_dir_fid
,
4008 const struct smb_filename
*smb_fname
,
4009 struct smb_filename
**smb_fname_out
)
4011 files_struct
*dir_fsp
;
4012 char *parent_fname
= NULL
;
4013 char *new_base_name
= NULL
;
4016 if (root_dir_fid
== 0 || !smb_fname
) {
4017 status
= NT_STATUS_INTERNAL_ERROR
;
4021 dir_fsp
= file_fsp(req
, root_dir_fid
);
4023 if (dir_fsp
== NULL
) {
4024 status
= NT_STATUS_INVALID_HANDLE
;
4028 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
4029 status
= NT_STATUS_INVALID_HANDLE
;
4033 if (!dir_fsp
->is_directory
) {
4036 * Check to see if this is a mac fork of some kind.
4039 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
4040 is_ntfs_stream_smb_fname(smb_fname
)) {
4041 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
4046 we need to handle the case when we get a
4047 relative open relative to a file and the
4048 pathname is blank - this is a reopen!
4049 (hint from demyn plantenberg)
4052 status
= NT_STATUS_INVALID_HANDLE
;
4056 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
4058 * We're at the toplevel dir, the final file name
4059 * must not contain ./, as this is filtered out
4060 * normally by srvstr_get_path and unix_convert
4061 * explicitly rejects paths containing ./.
4063 parent_fname
= talloc_strdup(talloc_tos(), "");
4064 if (parent_fname
== NULL
) {
4065 status
= NT_STATUS_NO_MEMORY
;
4069 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
4072 * Copy in the base directory name.
4075 parent_fname
= talloc_array(talloc_tos(), char,
4077 if (parent_fname
== NULL
) {
4078 status
= NT_STATUS_NO_MEMORY
;
4081 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
4085 * Ensure it ends in a '/'.
4086 * We used TALLOC_SIZE +2 to add space for the '/'.
4090 && (parent_fname
[dir_name_len
-1] != '\\')
4091 && (parent_fname
[dir_name_len
-1] != '/')) {
4092 parent_fname
[dir_name_len
] = '/';
4093 parent_fname
[dir_name_len
+1] = '\0';
4097 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
4098 smb_fname
->base_name
);
4099 if (new_base_name
== NULL
) {
4100 status
= NT_STATUS_NO_MEMORY
;
4104 status
= filename_convert(req
,
4106 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
4111 if (!NT_STATUS_IS_OK(status
)) {
4116 TALLOC_FREE(parent_fname
);
4117 TALLOC_FREE(new_base_name
);
4121 NTSTATUS
create_file_default(connection_struct
*conn
,
4122 struct smb_request
*req
,
4123 uint16_t root_dir_fid
,
4124 struct smb_filename
*smb_fname
,
4125 uint32_t access_mask
,
4126 uint32_t share_access
,
4127 uint32_t create_disposition
,
4128 uint32_t create_options
,
4129 uint32_t file_attributes
,
4130 uint32_t oplock_request
,
4131 uint64_t allocation_size
,
4132 uint32_t private_flags
,
4133 struct security_descriptor
*sd
,
4134 struct ea_list
*ea_list
,
4135 files_struct
**result
,
4138 int info
= FILE_WAS_OPENED
;
4139 files_struct
*fsp
= NULL
;
4141 bool stream_name
= false;
4143 DEBUG(10,("create_file: access_mask = 0x%x "
4144 "file_attributes = 0x%x, share_access = 0x%x, "
4145 "create_disposition = 0x%x create_options = 0x%x "
4146 "oplock_request = 0x%x "
4147 "private_flags = 0x%x "
4148 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4150 (unsigned int)access_mask
,
4151 (unsigned int)file_attributes
,
4152 (unsigned int)share_access
,
4153 (unsigned int)create_disposition
,
4154 (unsigned int)create_options
,
4155 (unsigned int)oplock_request
,
4156 (unsigned int)private_flags
,
4157 (unsigned int)root_dir_fid
,
4158 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4161 * Calculate the filename from the root_dir_if if necessary.
4164 if (root_dir_fid
!= 0) {
4165 struct smb_filename
*smb_fname_out
= NULL
;
4166 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4167 smb_fname
, &smb_fname_out
);
4168 if (!NT_STATUS_IS_OK(status
)) {
4171 smb_fname
= smb_fname_out
;
4175 * Check to see if this is a mac fork of some kind.
4178 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4180 enum FAKE_FILE_TYPE fake_file_type
;
4182 fake_file_type
= is_fake_file(smb_fname
);
4184 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4187 * Here we go! support for changing the disk quotas
4190 * We need to fake up to open this MAGIC QUOTA file
4191 * and return a valid FID.
4193 * w2k close this file directly after openening xp
4194 * also tries a QUERY_FILE_INFO on the file and then
4197 status
= open_fake_file(req
, conn
, req
->vuid
,
4198 fake_file_type
, smb_fname
,
4200 if (!NT_STATUS_IS_OK(status
)) {
4204 ZERO_STRUCT(smb_fname
->st
);
4208 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4209 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4214 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4216 smb_fname
->stream_name
= NULL
;
4217 /* We have to handle this error here. */
4218 if (create_options
& FILE_DIRECTORY_FILE
) {
4219 status
= NT_STATUS_NOT_A_DIRECTORY
;
4222 if (lp_posix_pathnames()) {
4223 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4225 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4228 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4229 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4234 status
= create_file_unixpath(
4235 conn
, req
, smb_fname
, access_mask
, share_access
,
4236 create_disposition
, create_options
, file_attributes
,
4237 oplock_request
, allocation_size
, private_flags
,
4241 if (!NT_STATUS_IS_OK(status
)) {
4246 DEBUG(10, ("create_file: info=%d\n", info
));
4249 if (pinfo
!= NULL
) {
4252 return NT_STATUS_OK
;
4255 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4258 close_file(req
, fsp
, ERROR_CLOSE
);