2 Unix SMB/CIFS implementation.
3 file opening and share modes
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2004
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/filesys.h"
25 #include "smbd/smbd.h"
26 #include "smbd/globals.h"
27 #include "fake_file.h"
28 #include "../libcli/security/security.h"
29 #include "../librpc/gen_ndr/ndr_security.h"
30 #include "../librpc/gen_ndr/open_files.h"
35 extern const struct generic_mapping file_generic_mapping
;
37 struct deferred_open_record
{
38 bool delayed_for_oplocks
;
43 /****************************************************************************
44 If the requester wanted DELETE_ACCESS and was rejected because
45 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
47 ****************************************************************************/
49 static bool parent_override_delete(connection_struct
*conn
,
50 const struct smb_filename
*smb_fname
,
52 uint32_t rejected_mask
)
54 if ((access_mask
& DELETE_ACCESS
) &&
55 (rejected_mask
& DELETE_ACCESS
) &&
56 can_delete_file_in_directory(conn
, smb_fname
)) {
62 /****************************************************************************
63 Check if we have open rights.
64 ****************************************************************************/
66 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
67 const struct smb_filename
*smb_fname
,
71 /* Check if we have rights to open. */
73 struct security_descriptor
*sd
= NULL
;
74 uint32_t rejected_share_access
;
75 uint32_t rejected_mask
= access_mask
;
77 rejected_share_access
= access_mask
& ~(conn
->share_access
);
79 if (rejected_share_access
) {
80 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
82 (unsigned int)access_mask
,
83 smb_fname_str_dbg(smb_fname
),
84 (unsigned int)rejected_share_access
));
85 return NT_STATUS_ACCESS_DENIED
;
88 if (!use_privs
&& get_current_uid(conn
) == (uid_t
)0) {
89 /* I'm sorry sir, I didn't know you were root... */
90 DEBUG(10,("smbd_check_access_rights: root override "
91 "on %s. Granting 0x%x\n",
92 smb_fname_str_dbg(smb_fname
),
93 (unsigned int)access_mask
));
97 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
98 DEBUG(10,("smbd_check_access_rights: not checking ACL "
99 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
100 smb_fname_str_dbg(smb_fname
),
101 (unsigned int)access_mask
));
105 if (access_mask
== DELETE_ACCESS
&&
106 VALID_STAT(smb_fname
->st
) &&
107 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
108 /* We can always delete a symlink. */
109 DEBUG(10,("smbd_check_access_rights: not checking ACL "
110 "on DELETE_ACCESS on symlink %s.\n",
111 smb_fname_str_dbg(smb_fname
) ));
115 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
120 if (!NT_STATUS_IS_OK(status
)) {
121 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
123 smb_fname_str_dbg(smb_fname
),
126 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
134 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
135 * owner WRITE_DAC and READ_CONTROL.
137 status
= se_file_access_check(sd
,
138 get_current_nttok(conn
),
140 (access_mask
& ~FILE_READ_ATTRIBUTES
),
143 DEBUG(10,("smbd_check_access_rights: file %s requesting "
144 "0x%x returning 0x%x (%s)\n",
145 smb_fname_str_dbg(smb_fname
),
146 (unsigned int)access_mask
,
147 (unsigned int)rejected_mask
,
148 nt_errstr(status
) ));
150 if (!NT_STATUS_IS_OK(status
)) {
151 if (DEBUGLEVEL
>= 10) {
152 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
153 smb_fname_str_dbg(smb_fname
) ));
154 NDR_PRINT_DEBUG(security_descriptor
, sd
);
160 if (NT_STATUS_IS_OK(status
) ||
161 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
165 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
169 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
170 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
171 !lp_store_dos_attributes(SNUM(conn
)) &&
172 (lp_map_readonly(SNUM(conn
)) ||
173 lp_map_archive(SNUM(conn
)) ||
174 lp_map_hidden(SNUM(conn
)) ||
175 lp_map_system(SNUM(conn
)))) {
176 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
178 DEBUG(10,("smbd_check_access_rights: "
180 "FILE_WRITE_ATTRIBUTES "
182 smb_fname_str_dbg(smb_fname
)));
185 if (parent_override_delete(conn
,
189 /* Were we trying to do an open
190 * for delete and didn't get DELETE
191 * access (only) ? Check if the
192 * directory allows DELETE_CHILD.
194 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
197 rejected_mask
&= ~DELETE_ACCESS
;
199 DEBUG(10,("smbd_check_access_rights: "
203 smb_fname_str_dbg(smb_fname
)));
206 if (rejected_mask
!= 0) {
207 return NT_STATUS_ACCESS_DENIED
;
212 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
213 struct smb_filename
*smb_fname
,
214 uint32_t access_mask
)
217 char *parent_dir
= NULL
;
218 struct security_descriptor
*parent_sd
= NULL
;
219 uint32_t access_granted
= 0;
221 if (!parent_dirname(talloc_tos(),
222 smb_fname
->base_name
,
225 return NT_STATUS_NO_MEMORY
;
228 if (get_current_uid(conn
) == (uid_t
)0) {
229 /* I'm sorry sir, I didn't know you were root... */
230 DEBUG(10,("check_parent_access: root override "
231 "on %s. Granting 0x%x\n",
232 smb_fname_str_dbg(smb_fname
),
233 (unsigned int)access_mask
));
237 status
= SMB_VFS_GET_NT_ACL(conn
,
242 if (!NT_STATUS_IS_OK(status
)) {
243 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
244 "%s with error %s\n",
251 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
252 * owner WRITE_DAC and READ_CONTROL.
254 status
= se_file_access_check(parent_sd
,
255 get_current_nttok(conn
),
257 (access_mask
& ~FILE_READ_ATTRIBUTES
),
259 if(!NT_STATUS_IS_OK(status
)) {
260 DEBUG(5,("check_parent_access: access check "
261 "on directory %s for "
262 "path %s for mask 0x%x returned (0x%x) %s\n",
264 smb_fname
->base_name
,
267 nt_errstr(status
) ));
274 /****************************************************************************
275 fd support routines - attempt to do a dos_open.
276 ****************************************************************************/
278 NTSTATUS
fd_open(struct connection_struct
*conn
,
283 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
284 NTSTATUS status
= NT_STATUS_OK
;
288 * Never follow symlinks on a POSIX client. The
289 * client should be doing this.
292 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
297 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
298 if (fsp
->fh
->fd
== -1) {
299 int posix_errno
= errno
;
301 #if defined(ENOTSUP) && defined(OSF1)
302 /* handle special Tru64 errno */
303 if (errno
== ENOTSUP
) {
308 /* fix broken NetBSD errno */
309 if (errno
== EFTYPE
) {
313 /* fix broken FreeBSD errno */
314 if (errno
== EMLINK
) {
317 #endif /* O_NOFOLLOW */
318 status
= map_nt_error_from_unix(posix_errno
);
319 if (errno
== EMFILE
) {
320 static time_t last_warned
= 0L;
322 if (time((time_t *) NULL
) > last_warned
) {
323 DEBUG(0,("Too many open files, unable "
324 "to open more! smbd's max "
326 lp_max_open_files()));
327 last_warned
= time((time_t *) NULL
);
333 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
334 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
335 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
340 /****************************************************************************
341 Close the file associated with a fsp.
342 ****************************************************************************/
344 NTSTATUS
fd_close(files_struct
*fsp
)
351 if (fsp
->fh
->fd
== -1) {
352 return NT_STATUS_OK
; /* What we used to call a stat open. */
354 if (fsp
->fh
->ref_count
> 1) {
355 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
358 ret
= SMB_VFS_CLOSE(fsp
);
361 return map_nt_error_from_unix(errno
);
366 /****************************************************************************
367 Change the ownership of a file to that of the parent directory.
368 Do this by fd if possible.
369 ****************************************************************************/
371 void change_file_owner_to_parent(connection_struct
*conn
,
372 const char *inherit_from_dir
,
375 struct smb_filename
*smb_fname_parent
= NULL
;
379 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
380 NULL
, NULL
, &smb_fname_parent
);
381 if (!NT_STATUS_IS_OK(status
)) {
385 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
387 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
388 "directory %s. Error was %s\n",
389 smb_fname_str_dbg(smb_fname_parent
),
391 TALLOC_FREE(smb_fname_parent
);
395 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
396 /* Already this uid - no need to change. */
397 DEBUG(10,("change_file_owner_to_parent: file %s "
398 "is already owned by uid %d\n",
400 (int)fsp
->fsp_name
->st
.st_ex_uid
));
401 TALLOC_FREE(smb_fname_parent
);
406 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
409 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
410 "file %s to parent directory uid %u. Error "
411 "was %s\n", fsp_str_dbg(fsp
),
412 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
415 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
416 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
417 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
418 /* Ensure the uid entry is updated. */
419 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
422 TALLOC_FREE(smb_fname_parent
);
425 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
426 const char *inherit_from_dir
,
428 SMB_STRUCT_STAT
*psbuf
)
430 struct smb_filename
*smb_fname_parent
= NULL
;
431 struct smb_filename
*smb_fname_cwd
= NULL
;
432 char *saved_dir
= NULL
;
433 TALLOC_CTX
*ctx
= talloc_tos();
434 NTSTATUS status
= NT_STATUS_OK
;
437 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
439 if (!NT_STATUS_IS_OK(status
)) {
443 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
445 status
= map_nt_error_from_unix(errno
);
446 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
447 "directory %s. Error was %s\n",
448 smb_fname_str_dbg(smb_fname_parent
),
453 /* We've already done an lstat into psbuf, and we know it's a
454 directory. If we can cd into the directory and the dev/ino
455 are the same then we can safely chown without races as
456 we're locking the directory in place by being in it. This
457 should work on any UNIX (thanks tridge :-). JRA.
460 saved_dir
= vfs_GetWd(ctx
,conn
);
462 status
= map_nt_error_from_unix(errno
);
463 DEBUG(0,("change_dir_owner_to_parent: failed to get "
464 "current working directory. Error was %s\n",
469 /* Chdir into the new path. */
470 if (vfs_ChDir(conn
, fname
) == -1) {
471 status
= map_nt_error_from_unix(errno
);
472 DEBUG(0,("change_dir_owner_to_parent: failed to change "
473 "current working directory to %s. Error "
474 "was %s\n", fname
, strerror(errno
) ));
478 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
480 if (!NT_STATUS_IS_OK(status
)) {
484 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
486 status
= map_nt_error_from_unix(errno
);
487 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
488 "directory '.' (%s) Error was %s\n",
489 fname
, strerror(errno
)));
493 /* Ensure we're pointing at the same place. */
494 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
495 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
496 DEBUG(0,("change_dir_owner_to_parent: "
497 "device/inode on directory %s changed. "
498 "Refusing to chown !\n", fname
));
499 status
= NT_STATUS_ACCESS_DENIED
;
503 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
504 /* Already this uid - no need to change. */
505 DEBUG(10,("change_dir_owner_to_parent: directory %s "
506 "is already owned by uid %d\n",
508 (int)smb_fname_cwd
->st
.st_ex_uid
));
509 status
= NT_STATUS_OK
;
514 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
518 status
= map_nt_error_from_unix(errno
);
519 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
520 "directory %s to parent directory uid %u. "
521 "Error was %s\n", fname
,
522 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
525 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
526 "directory %s to parent directory uid %u.\n",
527 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
528 /* Ensure the uid entry is updated. */
529 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
533 vfs_ChDir(conn
,saved_dir
);
535 TALLOC_FREE(smb_fname_parent
);
536 TALLOC_FREE(smb_fname_cwd
);
540 /****************************************************************************
541 Open a file - returning a guaranteed ATOMIC indication of if the
542 file was created or not.
543 ****************************************************************************/
545 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
551 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
552 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
554 *file_created
= false;
556 if (!(flags
& O_CREAT
)) {
558 * We're not creating the file, just pass through.
560 return fd_open(conn
, fsp
, flags
, mode
);
563 if (flags
& O_EXCL
) {
565 * Fail if already exists, just pass through.
567 status
= fd_open(conn
, fsp
, flags
, mode
);
570 * Here we've opened with O_CREAT|O_EXCL. If that went
571 * NT_STATUS_OK, we *know* we created this file.
573 *file_created
= NT_STATUS_IS_OK(status
);
579 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
580 * To know absolutely if we created the file or not,
581 * we can never call O_CREAT without O_EXCL. So if
582 * we think the file existed, try without O_CREAT|O_EXCL.
583 * If we think the file didn't exist, try with
584 * O_CREAT|O_EXCL. Keep bouncing between these two
585 * requests until either the file is created, or
586 * opened. Either way, we keep going until we get
587 * a returnable result (error, or open/create).
591 int curr_flags
= flags
;
594 /* Just try open, do not create. */
595 curr_flags
&= ~(O_CREAT
);
596 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
597 if (NT_STATUS_EQUAL(status
,
598 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
600 * Someone deleted it in the meantime.
603 file_existed
= false;
604 DEBUG(10,("fd_open_atomic: file %s existed. "
606 smb_fname_str_dbg(fsp
->fsp_name
)));
610 /* Try create exclusively, fail if it exists. */
611 curr_flags
|= O_EXCL
;
612 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
613 if (NT_STATUS_EQUAL(status
,
614 NT_STATUS_OBJECT_NAME_COLLISION
)) {
616 * Someone created it in the meantime.
617 * Retry without O_CREAT.
620 DEBUG(10,("fd_open_atomic: file %s "
621 "did not exist. Retry.\n",
622 smb_fname_str_dbg(fsp
->fsp_name
)));
625 if (NT_STATUS_IS_OK(status
)) {
627 * Here we've opened with O_CREAT|O_EXCL
628 * and got success. We *know* we created
631 *file_created
= true;
634 /* Create is done, or failed. */
640 /****************************************************************************
642 ****************************************************************************/
644 static NTSTATUS
open_file(files_struct
*fsp
,
645 connection_struct
*conn
,
646 struct smb_request
*req
,
647 const char *parent_dir
,
650 uint32 access_mask
, /* client requested access mask. */
651 uint32 open_access_mask
, /* what we're actually using in the open. */
652 bool *p_file_created
)
654 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
655 NTSTATUS status
= NT_STATUS_OK
;
656 int accmode
= (flags
& O_ACCMODE
);
657 int local_flags
= flags
;
658 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
663 /* Check permissions */
666 * This code was changed after seeing a client open request
667 * containing the open mode of (DENY_WRITE/read-only) with
668 * the 'create if not exist' bit set. The previous code
669 * would fail to open the file read only on a read-only share
670 * as it was checking the flags parameter directly against O_RDONLY,
671 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
675 if (!CAN_WRITE(conn
)) {
676 /* It's a read-only share - fail if we wanted to write. */
677 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
678 DEBUG(3,("Permission denied opening %s\n",
679 smb_fname_str_dbg(smb_fname
)));
680 return NT_STATUS_ACCESS_DENIED
;
681 } else if(flags
& O_CREAT
) {
682 /* We don't want to write - but we must make sure that
683 O_CREAT doesn't create the file if we have write
684 access into the directory.
686 flags
&= ~(O_CREAT
|O_EXCL
);
687 local_flags
&= ~(O_CREAT
|O_EXCL
);
692 * This little piece of insanity is inspired by the
693 * fact that an NT client can open a file for O_RDONLY,
694 * but set the create disposition to FILE_EXISTS_TRUNCATE.
695 * If the client *can* write to the file, then it expects to
696 * truncate the file, even though it is opening for readonly.
697 * Quicken uses this stupid trick in backup file creation...
698 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
699 * for helping track this one down. It didn't bite us in 2.0.x
700 * as we always opened files read-write in that release. JRA.
703 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
704 DEBUG(10,("open_file: truncate requested on read-only open "
705 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
706 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
709 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
710 (!file_existed
&& (local_flags
& O_CREAT
)) ||
711 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
715 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
717 * We would block on opening a FIFO with no one else on the
718 * other end. Do what we used to do and add O_NONBLOCK to the
722 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
723 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
724 local_flags
|= O_NONBLOCK
;
728 /* Don't create files with Microsoft wildcard characters. */
731 * wildcard characters are allowed in stream names
732 * only test the basefilename
734 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
736 wild
= smb_fname
->base_name
;
738 if ((local_flags
& O_CREAT
) && !file_existed
&&
740 return NT_STATUS_OBJECT_NAME_INVALID
;
743 /* Can we access this file ? */
744 if (!fsp
->base_fsp
) {
745 /* Only do this check on non-stream open. */
747 status
= smbd_check_access_rights(conn
,
751 } else if (local_flags
& O_CREAT
){
752 status
= check_parent_access(conn
,
756 /* File didn't exist and no O_CREAT. */
757 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
759 if (!NT_STATUS_IS_OK(status
)) {
760 DEBUG(10,("open_file: "
764 "smbd_check_access_rights" :
765 "check_parent_access",
766 smb_fname_str_dbg(smb_fname
),
767 nt_errstr(status
) ));
772 /* Actually do the open */
773 status
= fd_open_atomic(conn
, fsp
, local_flags
,
774 unx_mode
, p_file_created
);
775 if (!NT_STATUS_IS_OK(status
)) {
776 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
777 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
778 nt_errstr(status
),local_flags
,flags
));
782 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
784 /* If we have an fd, this stat should succeed. */
785 DEBUG(0,("Error doing fstat on open file %s "
787 smb_fname_str_dbg(smb_fname
),
789 status
= map_nt_error_from_unix(errno
);
794 if (*p_file_created
) {
795 /* We created this file. */
797 bool need_re_stat
= false;
798 /* Do all inheritance work after we've
799 done a successful fstat call and filled
800 in the stat struct in fsp->fsp_name. */
802 /* Inherit the ACL if required */
803 if (lp_inherit_perms(SNUM(conn
))) {
804 inherit_access_posix_acl(conn
, parent_dir
,
805 smb_fname
->base_name
,
810 /* Change the owner if required. */
811 if (lp_inherit_owner(SNUM(conn
))) {
812 change_file_owner_to_parent(conn
, parent_dir
,
818 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
819 /* If we have an fd, this stat should succeed. */
821 DEBUG(0,("Error doing fstat on open file %s "
823 smb_fname_str_dbg(smb_fname
),
828 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
829 FILE_NOTIFY_CHANGE_FILE_NAME
,
830 smb_fname
->base_name
);
833 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
835 /* File must exist for a stat open. */
836 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
839 status
= smbd_check_access_rights(conn
,
844 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
846 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
847 /* This is a POSIX stat open for delete
848 * or rename on a symlink that points
850 DEBUG(10,("open_file: allowing POSIX "
851 "open on bad symlink %s\n",
852 smb_fname_str_dbg(smb_fname
)));
853 status
= NT_STATUS_OK
;
856 if (!NT_STATUS_IS_OK(status
)) {
857 DEBUG(10,("open_file: "
858 "smbd_check_access_rights on file "
860 smb_fname_str_dbg(smb_fname
),
861 nt_errstr(status
) ));
867 * POSIX allows read-only opens of directories. We don't
868 * want to do this (we use a different code path for this)
869 * so catch a directory open and return an EISDIR. JRA.
872 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
875 return NT_STATUS_FILE_IS_A_DIRECTORY
;
878 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
879 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
880 fsp
->file_pid
= req
? req
->smbpid
: 0;
881 fsp
->can_lock
= True
;
882 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
885 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
886 fsp
->print_file
= NULL
;
887 fsp
->modified
= False
;
888 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
889 fsp
->is_directory
= False
;
890 if (conn
->aio_write_behind_list
&&
891 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
892 conn
->case_sensitive
)) {
893 fsp
->aio_write_behind
= True
;
896 fsp
->wcp
= NULL
; /* Write cache pointer. */
898 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
899 conn
->session_info
->unix_info
->unix_name
,
900 smb_fname_str_dbg(smb_fname
),
901 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
902 conn
->num_files_open
));
908 /****************************************************************************
909 Check if we can open a file with a share mode.
910 Returns True if conflict, False if not.
911 ****************************************************************************/
913 static bool share_conflict(struct share_mode_entry
*entry
,
917 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
918 "entry->share_access = 0x%x, "
919 "entry->private_options = 0x%x\n",
920 (unsigned int)entry
->access_mask
,
921 (unsigned int)entry
->share_access
,
922 (unsigned int)entry
->private_options
));
924 if (server_id_is_disconnected(&entry
->pid
)) {
926 * note: cleanup should have been done by
927 * delay_for_batch_oplocks()
932 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
933 (unsigned int)access_mask
, (unsigned int)share_access
));
935 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
939 DELETE_ACCESS
)) == 0) {
940 DEBUG(10,("share_conflict: No conflict due to "
941 "entry->access_mask = 0x%x\n",
942 (unsigned int)entry
->access_mask
));
946 if ((access_mask
& (FILE_WRITE_DATA
|
950 DELETE_ACCESS
)) == 0) {
951 DEBUG(10,("share_conflict: No conflict due to "
952 "access_mask = 0x%x\n",
953 (unsigned int)access_mask
));
957 #if 1 /* JRA TEST - Superdebug. */
958 #define CHECK_MASK(num, am, right, sa, share) \
959 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
960 (unsigned int)(num), (unsigned int)(am), \
961 (unsigned int)(right), (unsigned int)(am)&(right) )); \
962 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
963 (unsigned int)(num), (unsigned int)(sa), \
964 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
965 if (((am) & (right)) && !((sa) & (share))) { \
966 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
967 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
968 (unsigned int)(share) )); \
972 #define CHECK_MASK(num, am, right, sa, share) \
973 if (((am) & (right)) && !((sa) & (share))) { \
974 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
975 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
976 (unsigned int)(share) )); \
981 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
982 share_access
, FILE_SHARE_WRITE
);
983 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
984 entry
->share_access
, FILE_SHARE_WRITE
);
986 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
987 share_access
, FILE_SHARE_READ
);
988 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
989 entry
->share_access
, FILE_SHARE_READ
);
991 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
992 share_access
, FILE_SHARE_DELETE
);
993 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
994 entry
->share_access
, FILE_SHARE_DELETE
);
996 DEBUG(10,("share_conflict: No conflict.\n"));
1000 #if defined(DEVELOPER)
1001 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1003 struct share_mode_entry
*share_entry
)
1005 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1008 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1012 if (is_deferred_open_entry(share_entry
) &&
1013 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
1014 char *str
= talloc_asprintf(talloc_tos(),
1015 "Got a deferred entry without a request: "
1017 share_mode_str(talloc_tos(), num
, share_entry
));
1021 if (!is_valid_share_mode_entry(share_entry
)) {
1025 fsp
= file_find_dif(sconn
, share_entry
->id
,
1026 share_entry
->share_file_id
);
1028 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1029 share_mode_str(talloc_tos(), num
, share_entry
) ));
1030 smb_panic("validate_my_share_entries: Cannot match a "
1031 "share entry with an open file\n");
1034 if (is_deferred_open_entry(share_entry
)) {
1038 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1039 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
1040 /* Someone has already written to it, but I haven't yet
1045 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1054 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1055 share_mode_str(talloc_tos(), num
, share_entry
) ));
1056 str
= talloc_asprintf(talloc_tos(),
1057 "validate_my_share_entries: "
1058 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1059 fsp
->fsp_name
->base_name
,
1060 (unsigned int)fsp
->oplock_type
,
1061 (unsigned int)share_entry
->op_type
);
1067 bool is_stat_open(uint32 access_mask
)
1069 const uint32_t stat_open_bits
=
1070 (SYNCHRONIZE_ACCESS
|
1071 FILE_READ_ATTRIBUTES
|
1072 FILE_WRITE_ATTRIBUTES
);
1074 return (((access_mask
& stat_open_bits
) != 0) &&
1075 ((access_mask
& ~stat_open_bits
) == 0));
1078 /****************************************************************************
1079 Deal with share modes
1080 Invarient: Share mode must be locked on entry and exit.
1081 Returns -1 on error, or number of share modes on success (may be zero).
1082 ****************************************************************************/
1084 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1085 struct share_mode_lock
*lck
,
1088 uint32 share_access
,
1089 uint32 create_options
,
1094 if(lck
->data
->num_share_modes
== 0) {
1095 return NT_STATUS_OK
;
1098 /* A delete on close prohibits everything */
1100 if (is_delete_on_close_set(lck
, name_hash
)) {
1102 * Check the delete on close token
1103 * is valid. It could have been left
1104 * after a server crash.
1106 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1107 if (!share_mode_stale_pid(lck
->data
, i
)) {
1109 *file_existed
= true;
1111 return NT_STATUS_DELETE_PENDING
;
1114 return NT_STATUS_OK
;
1117 if (is_stat_open(access_mask
)) {
1118 /* Stat open that doesn't trigger oplock breaks or share mode
1119 * checks... ! JRA. */
1120 return NT_STATUS_OK
;
1124 * Check if the share modes will give us access.
1127 #if defined(DEVELOPER)
1128 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1129 validate_my_share_entries(conn
->sconn
, i
,
1130 &lck
->data
->share_modes
[i
]);
1134 /* Now we check the share modes, after any oplock breaks. */
1135 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1137 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1141 /* someone else has a share lock on it, check to see if we can
1143 if (share_conflict(&lck
->data
->share_modes
[i
],
1144 access_mask
, share_access
)) {
1146 if (share_mode_stale_pid(lck
->data
, i
)) {
1150 *file_existed
= true;
1152 return NT_STATUS_SHARING_VIOLATION
;
1156 if (lck
->data
->num_share_modes
!= 0) {
1157 *file_existed
= true;
1160 return NT_STATUS_OK
;
1164 * Send a break message to the oplock holder and delay the open for
1168 static NTSTATUS
send_break_message(files_struct
*fsp
,
1169 struct share_mode_entry
*exclusive
,
1174 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1176 DEBUG(10, ("Sending break request to PID %s\n",
1177 procid_str_static(&exclusive
->pid
)));
1178 exclusive
->op_mid
= mid
;
1180 /* Create the message. */
1181 share_mode_entry_to_message(msg
, exclusive
);
1183 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1184 don't want this set in the share mode struct pointed to by lck. */
1186 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1187 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1188 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1191 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1192 MSG_SMB_BREAK_REQUEST
,
1194 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1195 if (!NT_STATUS_IS_OK(status
)) {
1196 DEBUG(3, ("Could not send oplock break message: %s\n",
1197 nt_errstr(status
)));
1204 * Return share_mode_entry pointers for :
1205 * 1). Batch oplock entry.
1206 * 2). Batch or exclusive oplock entry (may be identical to #1).
1207 * bool have_level2_oplock
1208 * bool have_no_oplock.
1209 * Do internal consistency checks on the share mode for a file.
1212 static void find_oplock_types(files_struct
*fsp
,
1214 const struct share_mode_lock
*lck
,
1215 struct share_mode_entry
**pp_batch
,
1216 struct share_mode_entry
**pp_ex_or_batch
,
1218 bool *got_no_oplock
)
1223 *pp_ex_or_batch
= NULL
;
1224 *got_level2
= false;
1225 *got_no_oplock
= false;
1227 /* Ignore stat or internal opens, as is done in
1228 delay_for_batch_oplocks() and
1229 delay_for_exclusive_oplocks().
1231 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1235 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1236 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1240 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1241 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1242 /* We ignore stat opens in the table - they
1243 always have NO_OPLOCK and never get or
1244 cause breaks. JRA. */
1248 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1249 /* batch - can only be one. */
1250 if (share_mode_stale_pid(lck
->data
, i
)) {
1251 DEBUG(10, ("Found stale batch oplock\n"));
1254 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1255 smb_panic("Bad batch oplock entry.");
1257 *pp_batch
= &lck
->data
->share_modes
[i
];
1260 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1261 if (share_mode_stale_pid(lck
->data
, i
)) {
1262 DEBUG(10, ("Found stale duplicate oplock\n"));
1265 /* Exclusive or batch - can only be one. */
1266 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1267 smb_panic("Bad exclusive or batch oplock entry.");
1269 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1272 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1273 if (*pp_batch
|| *pp_ex_or_batch
) {
1274 if (share_mode_stale_pid(lck
->data
, i
)) {
1275 DEBUG(10, ("Found stale LevelII "
1279 smb_panic("Bad levelII oplock entry.");
1284 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1285 if (*pp_batch
|| *pp_ex_or_batch
) {
1286 if (share_mode_stale_pid(lck
->data
, i
)) {
1287 DEBUG(10, ("Found stale NO_OPLOCK "
1291 smb_panic("Bad no oplock entry.");
1293 *got_no_oplock
= true;
1298 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1301 struct share_mode_entry
*batch_entry
)
1303 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1306 if (batch_entry
== NULL
) {
1310 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1313 * This could be achieved by sending a break message
1314 * to ourselves. Special considerations for files
1315 * with delete_on_close flag set!
1317 * For now we keep it simple and do not
1318 * allow delete on close for durable handles.
1323 /* Found a batch oplock */
1324 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1328 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1331 struct share_mode_entry
*ex_entry
)
1333 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1336 if (ex_entry
== NULL
) {
1340 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1342 * since only durable handles can get disconnected,
1343 * and we can only get durable handles with batch oplocks,
1344 * this should actually never be reached...
1349 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1353 static bool file_has_brlocks(files_struct
*fsp
)
1355 struct byte_range_lock
*br_lck
;
1357 br_lck
= brl_get_locks_readonly(fsp
);
1361 return br_lck
->num_locks
> 0 ? true : false;
1364 static void grant_fsp_oplock_type(files_struct
*fsp
,
1366 bool got_level2_oplock
,
1367 bool got_a_none_oplock
)
1369 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1370 lp_level2_oplocks(SNUM(fsp
->conn
));
1372 /* Start by granting what the client asked for,
1373 but ensure no SAMBA_PRIVATE bits can be set. */
1374 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1376 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1377 /* No oplocks on internal open. */
1378 fsp
->oplock_type
= NO_OPLOCK
;
1379 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1380 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1384 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1385 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1387 fsp
->oplock_type
= NO_OPLOCK
;
1390 if (is_stat_open(fsp
->access_mask
)) {
1391 /* Leave the value already set. */
1392 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1393 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1398 * Match what was requested (fsp->oplock_type) with
1399 * what was found in the existing share modes.
1402 if (got_a_none_oplock
) {
1403 fsp
->oplock_type
= NO_OPLOCK
;
1404 } else if (got_level2_oplock
) {
1405 if (fsp
->oplock_type
== NO_OPLOCK
||
1406 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1407 /* Store a level2 oplock, but don't tell the client */
1408 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1410 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1413 /* All share_mode_entries are placeholders or deferred.
1414 * Silently upgrade to fake levelII if the client didn't
1415 * ask for an oplock. */
1416 if (fsp
->oplock_type
== NO_OPLOCK
) {
1417 /* Store a level2 oplock, but don't tell the client */
1418 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1423 * Don't grant level2 to clients that don't want them
1424 * or if we've turned them off.
1426 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1427 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1430 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1431 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1434 static bool request_timed_out(struct timeval request_time
,
1435 struct timeval timeout
)
1437 struct timeval now
, end_time
;
1439 end_time
= timeval_sum(&request_time
, &timeout
);
1440 return (timeval_compare(&end_time
, &now
) < 0);
1443 /****************************************************************************
1444 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1445 ****************************************************************************/
1447 static void defer_open(struct share_mode_lock
*lck
,
1448 struct timeval request_time
,
1449 struct timeval timeout
,
1450 struct smb_request
*req
,
1451 struct deferred_open_record
*state
)
1453 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1455 /* Paranoia check */
1460 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1461 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1463 if (is_deferred_open_entry(e
) &&
1464 serverid_equal(&self
, &e
->pid
) &&
1465 (e
->op_mid
== req
->mid
)) {
1466 DEBUG(0, ("Trying to defer an already deferred "
1467 "request: mid=%llu, exiting\n",
1468 (unsigned long long)req
->mid
));
1470 exit_server("attempt to defer a deferred request");
1475 /* End paranoia check */
1477 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1478 "open entry for mid %llu\n",
1479 (unsigned int)request_time
.tv_sec
,
1480 (unsigned int)request_time
.tv_usec
,
1481 (unsigned long long)req
->mid
));
1483 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1484 state
->id
, (char *)state
, sizeof(*state
))) {
1486 exit_server("push_deferred_open_message_smb failed");
1489 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1494 /****************************************************************************
1495 On overwrite open ensure that the attributes match.
1496 ****************************************************************************/
1498 static bool open_match_attributes(connection_struct
*conn
,
1499 uint32 old_dos_attr
,
1500 uint32 new_dos_attr
,
1501 mode_t existing_unx_mode
,
1502 mode_t new_unx_mode
,
1503 mode_t
*returned_unx_mode
)
1505 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1507 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1508 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1510 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1511 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1512 *returned_unx_mode
= new_unx_mode
;
1514 *returned_unx_mode
= (mode_t
)0;
1517 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1518 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1519 "returned_unx_mode = 0%o\n",
1520 (unsigned int)old_dos_attr
,
1521 (unsigned int)existing_unx_mode
,
1522 (unsigned int)new_dos_attr
,
1523 (unsigned int)*returned_unx_mode
));
1525 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1526 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1527 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1528 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1532 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1533 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1534 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1541 /****************************************************************************
1542 Special FCB or DOS processing in the case of a sharing violation.
1543 Try and find a duplicated file handle.
1544 ****************************************************************************/
1546 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1547 connection_struct
*conn
,
1548 files_struct
*fsp_to_dup_into
,
1549 const struct smb_filename
*smb_fname
,
1554 uint32 share_access
,
1555 uint32 create_options
)
1559 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1560 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1562 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1563 fsp
= file_find_di_next(fsp
)) {
1565 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1566 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1567 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1568 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1569 (unsigned int)fsp
->file_pid
,
1570 (unsigned int)fsp
->fh
->private_options
,
1571 (unsigned int)fsp
->access_mask
));
1573 if (fsp
->fh
->fd
!= -1 &&
1574 fsp
->vuid
== vuid
&&
1575 fsp
->file_pid
== file_pid
&&
1576 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1577 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1578 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1579 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1580 strequal(fsp
->fsp_name
->stream_name
,
1581 smb_fname
->stream_name
)) {
1582 DEBUG(10,("fcb_or_dos_open: file match\n"));
1588 return NT_STATUS_NOT_FOUND
;
1591 /* quite an insane set of semantics ... */
1592 if (is_executable(smb_fname
->base_name
) &&
1593 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1594 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1595 return NT_STATUS_INVALID_PARAMETER
;
1598 /* We need to duplicate this fsp. */
1599 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1600 create_options
, fsp_to_dup_into
);
1603 static void schedule_defer_open(struct share_mode_lock
*lck
,
1604 struct timeval request_time
,
1605 struct smb_request
*req
)
1607 struct deferred_open_record state
;
1609 /* This is a relative time, added to the absolute
1610 request_time value to get the absolute timeout time.
1611 Note that if this is the second or greater time we enter
1612 this codepath for this particular request mid then
1613 request_time is left as the absolute time of the *first*
1614 time this request mid was processed. This is what allows
1615 the request to eventually time out. */
1617 struct timeval timeout
;
1619 /* Normally the smbd we asked should respond within
1620 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1621 * the client did, give twice the timeout as a safety
1622 * measure here in case the other smbd is stuck
1623 * somewhere else. */
1625 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1627 /* Nothing actually uses state.delayed_for_oplocks
1628 but it's handy to differentiate in debug messages
1629 between a 30 second delay due to oplock break, and
1630 a 1 second delay for share mode conflicts. */
1632 state
.delayed_for_oplocks
= True
;
1633 state
.async_open
= false;
1634 state
.id
= lck
->data
->id
;
1636 if (!request_timed_out(request_time
, timeout
)) {
1637 defer_open(lck
, request_time
, timeout
, req
, &state
);
1641 /****************************************************************************
1642 Reschedule an open call that went asynchronous.
1643 ****************************************************************************/
1645 static void schedule_async_open(struct timeval request_time
,
1646 struct smb_request
*req
)
1648 struct deferred_open_record state
;
1649 struct timeval timeout
;
1651 timeout
= timeval_set(20, 0);
1654 state
.delayed_for_oplocks
= false;
1655 state
.async_open
= true;
1657 if (!request_timed_out(request_time
, timeout
)) {
1658 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1662 /****************************************************************************
1663 Work out what access_mask to use from what the client sent us.
1664 ****************************************************************************/
1666 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1667 connection_struct
*conn
,
1668 const struct smb_filename
*smb_fname
,
1670 uint32_t *p_access_mask
)
1672 struct security_descriptor
*sd
;
1673 uint32_t access_granted
;
1676 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1677 *p_access_mask
|= FILE_GENERIC_ALL
;
1678 return NT_STATUS_OK
;
1681 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1686 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1688 * File did not exist
1690 *p_access_mask
= FILE_GENERIC_ALL
;
1691 return NT_STATUS_OK
;
1693 if (!NT_STATUS_IS_OK(status
)) {
1694 DEBUG(10,("Could not get acl on file %s: %s\n",
1695 smb_fname_str_dbg(smb_fname
),
1696 nt_errstr(status
)));
1697 return NT_STATUS_ACCESS_DENIED
;
1701 * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
1702 * also takes care of owner WRITE_DAC and READ_CONTROL.
1704 status
= se_file_access_check(sd
,
1705 get_current_nttok(conn
),
1707 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1712 if (!NT_STATUS_IS_OK(status
)) {
1713 DEBUG(10, ("Access denied on file %s: "
1714 "when calculating maximum access\n",
1715 smb_fname_str_dbg(smb_fname
)));
1716 return NT_STATUS_ACCESS_DENIED
;
1718 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1720 if (!(access_granted
& DELETE_ACCESS
)) {
1721 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1722 *p_access_mask
|= DELETE_ACCESS
;
1726 return NT_STATUS_OK
;
1729 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1730 const struct smb_filename
*smb_fname
,
1732 uint32_t access_mask
,
1733 uint32_t *access_mask_out
)
1736 uint32_t orig_access_mask
= access_mask
;
1737 uint32_t rejected_share_access
;
1740 * Convert GENERIC bits to specific bits.
1743 se_map_generic(&access_mask
, &file_generic_mapping
);
1745 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1746 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1748 status
= smbd_calculate_maximum_allowed_access(
1749 conn
, smb_fname
, use_privs
, &access_mask
);
1751 if (!NT_STATUS_IS_OK(status
)) {
1755 access_mask
&= conn
->share_access
;
1758 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1760 if (rejected_share_access
) {
1761 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1762 "file %s: rejected by share access mask[0x%08X] "
1763 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1764 smb_fname_str_dbg(smb_fname
),
1766 orig_access_mask
, access_mask
,
1767 rejected_share_access
));
1768 return NT_STATUS_ACCESS_DENIED
;
1771 *access_mask_out
= access_mask
;
1772 return NT_STATUS_OK
;
1775 /****************************************************************************
1776 Remove the deferred open entry under lock.
1777 ****************************************************************************/
1779 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1780 struct server_id pid
)
1782 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1785 DEBUG(0, ("could not get share mode lock\n"));
1788 del_deferred_open_entry(lck
, mid
, pid
);
1792 /****************************************************************************
1793 Return true if this is a state pointer to an asynchronous create.
1794 ****************************************************************************/
1796 bool is_deferred_open_async(const void *ptr
)
1798 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1800 return state
->async_open
;
1803 static bool clear_ads(uint32_t create_disposition
)
1807 switch (create_disposition
) {
1808 case FILE_SUPERSEDE
:
1809 case FILE_OVERWRITE_IF
:
1810 case FILE_OVERWRITE
:
1819 static int disposition_to_open_flags(uint32_t create_disposition
)
1824 * Currently we're using FILE_SUPERSEDE as the same as
1825 * FILE_OVERWRITE_IF but they really are
1826 * different. FILE_SUPERSEDE deletes an existing file
1827 * (requiring delete access) then recreates it.
1830 switch (create_disposition
) {
1831 case FILE_SUPERSEDE
:
1832 case FILE_OVERWRITE_IF
:
1834 * If file exists replace/overwrite. If file doesn't
1837 ret
= O_CREAT
|O_TRUNC
;
1842 * If file exists open. If file doesn't exist error.
1847 case FILE_OVERWRITE
:
1849 * If file exists overwrite. If file doesn't exist
1857 * If file exists error. If file doesn't exist create.
1859 ret
= O_CREAT
|O_EXCL
;
1864 * If file exists open. If file doesn't exist create.
1872 static int calculate_open_access_flags(uint32_t access_mask
,
1874 uint32_t private_flags
)
1879 * Note that we ignore the append flag as append does not
1880 * mean the same thing under DOS and Unix.
1883 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
1884 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
1885 /* DENY_DOS opens are always underlying read-write on the
1886 file handle, no matter what the requested access mask
1888 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
1889 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
1890 FILE_READ_EA
|FILE_EXECUTE
)) {
1901 /****************************************************************************
1902 Open a file with a share mode. Passed in an already created files_struct *.
1903 ****************************************************************************/
1905 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1906 struct smb_request
*req
,
1907 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1908 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1909 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1910 uint32 create_options
, /* options such as delete on close. */
1911 uint32 new_dos_attributes
, /* attributes used for new file. */
1912 int oplock_request
, /* internal Samba oplock codes. */
1913 /* Information (FILE_EXISTS etc.) */
1914 uint32_t private_flags
, /* Samba specific flags. */
1918 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1921 bool file_existed
= VALID_STAT(smb_fname
->st
);
1922 bool def_acl
= False
;
1923 bool posix_open
= False
;
1924 bool new_file_created
= False
;
1925 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1926 mode_t new_unx_mode
= (mode_t
)0;
1927 mode_t unx_mode
= (mode_t
)0;
1929 uint32 existing_dos_attributes
= 0;
1930 struct timeval request_time
= timeval_zero();
1931 struct share_mode_lock
*lck
= NULL
;
1932 uint32 open_access_mask
= access_mask
;
1935 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1937 if (conn
->printer
) {
1939 * Printers are handled completely differently.
1940 * Most of the passed parameters are ignored.
1944 *pinfo
= FILE_WAS_CREATED
;
1947 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1948 smb_fname_str_dbg(smb_fname
)));
1951 DEBUG(0,("open_file_ntcreate: printer open without "
1952 "an SMB request!\n"));
1953 return NT_STATUS_INTERNAL_ERROR
;
1956 return print_spool_open(fsp
, smb_fname
->base_name
,
1960 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1962 return NT_STATUS_NO_MEMORY
;
1965 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1967 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1968 new_dos_attributes
= 0;
1970 /* Windows allows a new file to be created and
1971 silently removes a FILE_ATTRIBUTE_DIRECTORY
1972 sent by the client. Do the same. */
1974 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1976 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1978 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1979 smb_fname
, parent_dir
);
1982 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1983 "access_mask=0x%x share_access=0x%x "
1984 "create_disposition = 0x%x create_options=0x%x "
1985 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1986 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1987 access_mask
, share_access
, create_disposition
,
1988 create_options
, (unsigned int)unx_mode
, oplock_request
,
1989 (unsigned int)private_flags
));
1991 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1992 DEBUG(0, ("No smb request but not an internal only open!\n"));
1993 return NT_STATUS_INTERNAL_ERROR
;
1997 * Only non-internal opens can be deferred at all
2002 if (get_deferred_open_message_state(req
,
2005 /* Remember the absolute time of the original
2006 request with this mid. We'll use it later to
2007 see if this has timed out. */
2009 /* If it was an async create retry, the file
2012 if (is_deferred_open_async(ptr
)) {
2013 SET_STAT_INVALID(smb_fname
->st
);
2014 file_existed
= false;
2016 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
2017 /* Remove the deferred open entry under lock. */
2018 remove_deferred_open_entry(
2019 state
->id
, req
->mid
,
2020 messaging_server_id(req
->sconn
->msg_ctx
));
2023 /* Ensure we don't reprocess this message. */
2024 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
2029 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2031 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2035 /* ignore any oplock requests if oplocks are disabled */
2036 if (!lp_oplocks(SNUM(conn
)) ||
2037 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2038 /* Mask off everything except the private Samba bits. */
2039 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2042 /* this is for OS/2 long file names - say we don't support them */
2043 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2044 /* OS/2 Workplace shell fix may be main code stream in a later
2046 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2048 if (use_nt_status()) {
2049 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2051 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2054 switch( create_disposition
) {
2056 /* If file exists open. If file doesn't exist error. */
2057 if (!file_existed
) {
2058 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2059 "requested for file %s and file "
2061 smb_fname_str_dbg(smb_fname
)));
2063 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2067 case FILE_OVERWRITE
:
2068 /* If file exists overwrite. If file doesn't exist
2070 if (!file_existed
) {
2071 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2072 "requested for file %s and file "
2074 smb_fname_str_dbg(smb_fname
) ));
2076 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2081 /* If file exists error. If file doesn't exist
2084 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2085 "requested for file %s and file "
2086 "already exists.\n",
2087 smb_fname_str_dbg(smb_fname
)));
2088 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2093 return map_nt_error_from_unix(errno
);
2097 case FILE_SUPERSEDE
:
2098 case FILE_OVERWRITE_IF
:
2102 return NT_STATUS_INVALID_PARAMETER
;
2105 flags2
= disposition_to_open_flags(create_disposition
);
2107 /* We only care about matching attributes on file exists and
2110 if (!posix_open
&& file_existed
&&
2111 ((create_disposition
== FILE_OVERWRITE
) ||
2112 (create_disposition
== FILE_OVERWRITE_IF
))) {
2113 if (!open_match_attributes(conn
, existing_dos_attributes
,
2115 smb_fname
->st
.st_ex_mode
,
2116 unx_mode
, &new_unx_mode
)) {
2117 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2118 "for file %s (%x %x) (0%o, 0%o)\n",
2119 smb_fname_str_dbg(smb_fname
),
2120 existing_dos_attributes
,
2122 (unsigned int)smb_fname
->st
.st_ex_mode
,
2123 (unsigned int)unx_mode
));
2125 return NT_STATUS_ACCESS_DENIED
;
2129 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2133 if (!NT_STATUS_IS_OK(status
)) {
2134 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2135 "on file %s returned %s\n",
2136 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2140 open_access_mask
= access_mask
;
2142 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2143 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2146 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2147 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2151 * Note that we ignore the append flag as append does not
2152 * mean the same thing under DOS and Unix.
2155 flags
= calculate_open_access_flags(access_mask
, oplock_request
,
2159 * Currently we only look at FILE_WRITE_THROUGH for create options.
2163 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2168 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2172 if (!posix_open
&& !CAN_WRITE(conn
)) {
2174 * We should really return a permission denied error if either
2175 * O_CREAT or O_TRUNC are set, but for compatibility with
2176 * older versions of Samba we just AND them out.
2178 flags2
&= ~(O_CREAT
|O_TRUNC
);
2182 * Ensure we can't write on a read-only share or file.
2185 if (flags
!= O_RDONLY
&& file_existed
&&
2186 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2187 DEBUG(5,("open_file_ntcreate: write access requested for "
2188 "file %s on read only %s\n",
2189 smb_fname_str_dbg(smb_fname
),
2190 !CAN_WRITE(conn
) ? "share" : "file" ));
2192 return NT_STATUS_ACCESS_DENIED
;
2195 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2196 fsp
->share_access
= share_access
;
2197 fsp
->fh
->private_options
= private_flags
;
2198 fsp
->access_mask
= open_access_mask
; /* We change this to the
2199 * requested access_mask after
2200 * the open is done. */
2201 fsp
->posix_open
= posix_open
;
2203 /* Ensure no SAMBA_PRIVATE bits can be set. */
2204 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2206 if (timeval_is_zero(&request_time
)) {
2207 request_time
= fsp
->open_time
;
2211 struct share_mode_entry
*batch_entry
= NULL
;
2212 struct share_mode_entry
*exclusive_entry
= NULL
;
2213 bool got_level2_oplock
= false;
2214 bool got_a_none_oplock
= false;
2217 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2218 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2220 lck
= get_share_mode_lock(talloc_tos(), id
,
2222 smb_fname
, &old_write_time
);
2224 DEBUG(0, ("Could not get share mode lock\n"));
2225 return NT_STATUS_SHARING_VIOLATION
;
2228 /* Get the types we need to examine. */
2229 find_oplock_types(fsp
,
2235 &got_a_none_oplock
);
2237 /* First pass - send break only on batch oplocks. */
2238 if ((req
!= NULL
) &&
2239 delay_for_batch_oplocks(fsp
,
2243 schedule_defer_open(lck
, request_time
, req
);
2245 return NT_STATUS_SHARING_VIOLATION
;
2248 /* Use the client requested access mask here, not the one we
2250 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2251 access_mask
, share_access
,
2252 create_options
, &file_existed
);
2254 if (NT_STATUS_IS_OK(status
)) {
2255 /* We might be going to allow this open. Check oplock
2257 /* Second pass - send break for both batch or
2258 * exclusive oplocks. */
2259 if ((req
!= NULL
) &&
2260 delay_for_exclusive_oplocks(
2265 schedule_defer_open(lck
, request_time
, req
);
2267 return NT_STATUS_SHARING_VIOLATION
;
2271 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2272 /* DELETE_PENDING is not deferred for a second */
2277 grant_fsp_oplock_type(fsp
,
2282 if (!NT_STATUS_IS_OK(status
)) {
2283 uint32 can_access_mask
;
2284 bool can_access
= True
;
2286 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2288 /* Check if this can be done with the deny_dos and fcb
2291 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2292 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2294 DEBUG(0, ("DOS open without an SMB "
2297 return NT_STATUS_INTERNAL_ERROR
;
2300 /* Use the client requested access mask here,
2301 * not the one we open with. */
2302 status
= fcb_or_dos_open(req
,
2313 if (NT_STATUS_IS_OK(status
)) {
2316 *pinfo
= FILE_WAS_OPENED
;
2318 return NT_STATUS_OK
;
2323 * This next line is a subtlety we need for
2324 * MS-Access. If a file open will fail due to share
2325 * permissions and also for security (access) reasons,
2326 * we need to return the access failed error, not the
2327 * share error. We can't open the file due to kernel
2328 * oplock deadlock (it's possible we failed above on
2329 * the open_mode_check()) so use a userspace check.
2332 if (flags
& O_RDWR
) {
2333 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2334 } else if (flags
& O_WRONLY
) {
2335 can_access_mask
= FILE_WRITE_DATA
;
2337 can_access_mask
= FILE_READ_DATA
;
2340 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2341 !CAN_WRITE(conn
)) ||
2342 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2345 can_access_mask
))) {
2350 * If we're returning a share violation, ensure we
2351 * cope with the braindead 1 second delay.
2354 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2355 lp_defer_sharing_violations()) {
2356 struct timeval timeout
;
2357 struct deferred_open_record state
;
2360 /* this is a hack to speed up torture tests
2362 timeout_usecs
= lp_parm_int(SNUM(conn
),
2363 "smbd","sharedelay",
2364 SHARING_VIOLATION_USEC_WAIT
);
2366 /* This is a relative time, added to the absolute
2367 request_time value to get the absolute timeout time.
2368 Note that if this is the second or greater time we enter
2369 this codepath for this particular request mid then
2370 request_time is left as the absolute time of the *first*
2371 time this request mid was processed. This is what allows
2372 the request to eventually time out. */
2374 timeout
= timeval_set(0, timeout_usecs
);
2376 /* Nothing actually uses state.delayed_for_oplocks
2377 but it's handy to differentiate in debug messages
2378 between a 30 second delay due to oplock break, and
2379 a 1 second delay for share mode conflicts. */
2381 state
.delayed_for_oplocks
= False
;
2382 state
.async_open
= false;
2386 && !request_timed_out(request_time
,
2388 defer_open(lck
, request_time
, timeout
,
2396 * We have detected a sharing violation here
2397 * so return the correct error code
2399 status
= NT_STATUS_SHARING_VIOLATION
;
2401 status
= NT_STATUS_ACCESS_DENIED
;
2407 * We exit this block with the share entry *locked*.....
2411 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2414 * Ensure we pay attention to default ACLs on directories if required.
2417 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2418 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2419 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2422 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2423 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2424 (unsigned int)flags
, (unsigned int)flags2
,
2425 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2426 (unsigned int)open_access_mask
));
2428 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2429 flags
|flags2
, unx_mode
, access_mask
,
2430 open_access_mask
, &new_file_created
);
2432 if (!NT_STATUS_IS_OK(fsp_open
)) {
2433 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2434 schedule_async_open(request_time
, req
);
2440 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2442 * The file did exist, but some other (local or NFS)
2443 * process either renamed/unlinked and re-created the
2444 * file with different dev/ino after we walked the path,
2445 * but before we did the open. We could retry the
2446 * open but it's a rare enough case it's easier to
2447 * just fail the open to prevent creating any problems
2448 * in the open file db having the wrong dev/ino key.
2452 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2453 "Old (dev=0x%llu, ino =0x%llu). "
2454 "New (dev=0x%llu, ino=0x%llu). Failing open "
2455 " with NT_STATUS_ACCESS_DENIED.\n",
2456 smb_fname_str_dbg(smb_fname
),
2457 (unsigned long long)saved_stat
.st_ex_dev
,
2458 (unsigned long long)saved_stat
.st_ex_ino
,
2459 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2460 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2461 return NT_STATUS_ACCESS_DENIED
;
2464 if (!file_existed
) {
2465 struct share_mode_entry
*batch_entry
= NULL
;
2466 struct share_mode_entry
*exclusive_entry
= NULL
;
2467 bool got_level2_oplock
= false;
2468 bool got_a_none_oplock
= false;
2469 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2472 * Deal with the race condition where two smbd's detect the
2473 * file doesn't exist and do the create at the same time. One
2474 * of them will win and set a share mode, the other (ie. this
2475 * one) should check if the requested share mode for this
2476 * create is allowed.
2480 * Now the file exists and fsp is successfully opened,
2481 * fsp->dev and fsp->inode are valid and should replace the
2482 * dev=0,inode=0 from a non existent file. Spotted by
2483 * Nadav Danieli <nadavd@exanet.com>. JRA.
2488 lck
= get_share_mode_lock(talloc_tos(), id
,
2490 smb_fname
, &old_write_time
);
2493 DEBUG(0, ("open_file_ntcreate: Could not get share "
2494 "mode lock for %s\n",
2495 smb_fname_str_dbg(smb_fname
)));
2497 return NT_STATUS_SHARING_VIOLATION
;
2500 /* Get the types we need to examine. */
2501 find_oplock_types(fsp
,
2507 &got_a_none_oplock
);
2509 /* First pass - send break only on batch oplocks. */
2510 if ((req
!= NULL
) &&
2511 delay_for_batch_oplocks(fsp
,
2515 schedule_defer_open(lck
, request_time
, req
);
2518 return NT_STATUS_SHARING_VIOLATION
;
2521 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2522 access_mask
, share_access
,
2523 create_options
, &file_existed
);
2525 if (NT_STATUS_IS_OK(status
)) {
2526 /* We might be going to allow this open. Check oplock
2528 /* Second pass - send break for both batch or
2529 * exclusive oplocks. */
2530 if ((req
!= NULL
) &&
2531 delay_for_exclusive_oplocks(
2536 schedule_defer_open(lck
, request_time
, req
);
2539 return NT_STATUS_SHARING_VIOLATION
;
2543 if (!NT_STATUS_IS_OK(status
)) {
2544 struct deferred_open_record state
;
2546 state
.delayed_for_oplocks
= False
;
2547 state
.async_open
= false;
2550 /* Do it all over again immediately. In the second
2551 * round we will find that the file existed and handle
2552 * the DELETE_PENDING and FCB cases correctly. No need
2553 * to duplicate the code here. Essentially this is a
2554 * "goto top of this function", but don't tell
2558 defer_open(lck
, request_time
, timeval_zero(),
2566 grant_fsp_oplock_type(fsp
,
2572 * We exit this block with the share entry *locked*.....
2577 SMB_ASSERT(lck
!= NULL
);
2579 /* Delete streams if create_disposition requires it */
2580 if (!new_file_created
&& clear_ads(create_disposition
) &&
2581 !is_ntfs_stream_smb_fname(smb_fname
)) {
2582 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2583 if (!NT_STATUS_IS_OK(status
)) {
2590 /* note that we ignore failure for the following. It is
2591 basically a hack for NFS, and NFS will never set one of
2592 these only read them. Nobody but Samba can ever set a deny
2593 mode and we have already checked our more authoritative
2594 locking database for permission to set this deny mode. If
2595 the kernel refuses the operations then the kernel is wrong.
2596 note that GPFS supports it as well - jmcd */
2598 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2600 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2601 if(ret_flock
== -1 ){
2606 return NT_STATUS_SHARING_VIOLATION
;
2611 * At this point onwards, we can guarantee that the share entry
2612 * is locked, whether we created the file or not, and that the
2613 * deny mode is compatible with all current opens.
2617 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2618 * but we don't have to store this - just ignore it on access check.
2620 if (conn
->sconn
->using_smb2
) {
2622 * SMB2 doesn't return it (according to Microsoft tests).
2623 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2624 * File created with access = 0x7 (Read, Write, Delete)
2625 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2627 fsp
->access_mask
= access_mask
;
2629 /* But SMB1 does. */
2630 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2634 /* stat opens on existing files don't get oplocks. */
2635 if (is_stat_open(open_access_mask
)) {
2636 fsp
->oplock_type
= NO_OPLOCK
;
2640 if (new_file_created
) {
2641 info
= FILE_WAS_CREATED
;
2643 if (flags2
& O_TRUNC
) {
2644 info
= FILE_WAS_OVERWRITTEN
;
2646 info
= FILE_WAS_OPENED
;
2655 * Setup the oplock info in both the shared memory and
2659 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2660 if (!NT_STATUS_IS_OK(status
)) {
2662 * Could not get the kernel oplock or there are byte-range
2663 * locks on the file.
2665 fsp
->oplock_type
= NO_OPLOCK
;
2668 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2672 /* Handle strange delete on close create semantics. */
2673 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2675 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2677 if (!NT_STATUS_IS_OK(status
)) {
2678 /* Remember to delete the mode we just added. */
2679 del_share_mode(lck
, fsp
);
2684 /* Note that here we set the *inital* delete on close flag,
2685 not the regular one. The magic gets handled in close. */
2686 fsp
->initial_delete_on_close
= True
;
2689 if (info
!= FILE_WAS_OPENED
) {
2690 /* Files should be initially set as archive */
2691 if (lp_map_archive(SNUM(conn
)) ||
2692 lp_store_dos_attributes(SNUM(conn
))) {
2694 if (file_set_dosmode(conn
, smb_fname
,
2695 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2696 parent_dir
, true) == 0) {
2697 unx_mode
= smb_fname
->st
.st_ex_mode
;
2703 /* Determine sparse flag. */
2705 /* POSIX opens are sparse by default. */
2706 fsp
->is_sparse
= true;
2708 fsp
->is_sparse
= (file_existed
&&
2709 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2713 * Take care of inherited ACLs on created files - if default ACL not
2717 if (!posix_open
&& new_file_created
&& !def_acl
) {
2719 int saved_errno
= errno
; /* We might get ENOSYS in the next
2722 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2724 errno
= saved_errno
; /* Ignore ENOSYS */
2727 } else if (new_unx_mode
) {
2731 /* Attributes need changing. File already existed. */
2734 int saved_errno
= errno
; /* We might get ENOSYS in the
2736 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2738 if (ret
== -1 && errno
== ENOSYS
) {
2739 errno
= saved_errno
; /* Ignore ENOSYS */
2741 DEBUG(5, ("open_file_ntcreate: reset "
2742 "attributes of file %s to 0%o\n",
2743 smb_fname_str_dbg(smb_fname
),
2744 (unsigned int)new_unx_mode
));
2745 ret
= 0; /* Don't do the fchmod below. */
2750 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2751 DEBUG(5, ("open_file_ntcreate: failed to reset "
2752 "attributes of file %s to 0%o\n",
2753 smb_fname_str_dbg(smb_fname
),
2754 (unsigned int)new_unx_mode
));
2757 /* If this is a successful open, we must remove any deferred open
2760 del_deferred_open_entry(lck
, req
->mid
,
2761 messaging_server_id(req
->sconn
->msg_ctx
));
2765 return NT_STATUS_OK
;
2769 /****************************************************************************
2770 Open a file for for write to ensure that we can fchmod it.
2771 ****************************************************************************/
2773 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2774 struct smb_filename
*smb_fname
,
2775 files_struct
**result
)
2777 if (!VALID_STAT(smb_fname
->st
)) {
2778 return NT_STATUS_INVALID_PARAMETER
;
2781 return SMB_VFS_CREATE_FILE(
2784 0, /* root_dir_fid */
2785 smb_fname
, /* fname */
2786 FILE_WRITE_DATA
, /* access_mask */
2787 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2789 FILE_OPEN
, /* create_disposition*/
2790 0, /* create_options */
2791 0, /* file_attributes */
2792 INTERNAL_OPEN_ONLY
, /* oplock_request */
2793 0, /* allocation_size */
2794 0, /* private_flags */
2797 result
, /* result */
2801 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2802 struct smb_filename
*smb_dname
,
2803 uint32 file_attributes
)
2806 char *parent_dir
= NULL
;
2808 bool posix_open
= false;
2809 bool need_re_stat
= false;
2810 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2812 if(access_mask
& ~(conn
->share_access
)) {
2813 DEBUG(5,("mkdir_internal: failing share access "
2814 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2815 return NT_STATUS_ACCESS_DENIED
;
2818 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2820 return NT_STATUS_NO_MEMORY
;
2823 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2825 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2827 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2830 status
= check_parent_access(conn
,
2833 if(!NT_STATUS_IS_OK(status
)) {
2834 DEBUG(5,("mkdir_internal: check_parent_access "
2835 "on directory %s for path %s returned %s\n",
2837 smb_dname
->base_name
,
2838 nt_errstr(status
) ));
2842 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2843 return map_nt_error_from_unix(errno
);
2846 /* Ensure we're checking for a symlink here.... */
2847 /* We don't want to get caught by a symlink racer. */
2849 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2850 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2851 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2852 return map_nt_error_from_unix(errno
);
2855 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2856 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2857 smb_fname_str_dbg(smb_dname
)));
2858 return NT_STATUS_NOT_A_DIRECTORY
;
2861 if (lp_store_dos_attributes(SNUM(conn
))) {
2863 file_set_dosmode(conn
, smb_dname
,
2864 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2869 if (lp_inherit_perms(SNUM(conn
))) {
2870 inherit_access_posix_acl(conn
, parent_dir
,
2871 smb_dname
->base_name
, mode
);
2872 need_re_stat
= true;
2877 * Check if high bits should have been set,
2878 * then (if bits are missing): add them.
2879 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2882 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2883 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2884 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2885 (smb_dname
->st
.st_ex_mode
|
2886 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2887 need_re_stat
= true;
2891 /* Change the owner if required. */
2892 if (lp_inherit_owner(SNUM(conn
))) {
2893 change_dir_owner_to_parent(conn
, parent_dir
,
2894 smb_dname
->base_name
,
2896 need_re_stat
= true;
2900 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2901 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2902 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2903 return map_nt_error_from_unix(errno
);
2907 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2908 smb_dname
->base_name
);
2910 return NT_STATUS_OK
;
2913 /****************************************************************************
2914 Open a directory from an NT SMB call.
2915 ****************************************************************************/
2917 static NTSTATUS
open_directory(connection_struct
*conn
,
2918 struct smb_request
*req
,
2919 struct smb_filename
*smb_dname
,
2921 uint32 share_access
,
2922 uint32 create_disposition
,
2923 uint32 create_options
,
2924 uint32 file_attributes
,
2926 files_struct
**result
)
2928 files_struct
*fsp
= NULL
;
2929 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2930 struct share_mode_lock
*lck
= NULL
;
2932 struct timespec mtimespec
;
2935 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2936 DEBUG(2, ("open_directory: %s is a stream name!\n",
2937 smb_fname_str_dbg(smb_dname
)));
2938 return NT_STATUS_NOT_A_DIRECTORY
;
2941 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2942 /* Ensure we have a directory attribute. */
2943 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2946 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2947 "share_access = 0x%x create_options = 0x%x, "
2948 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2949 smb_fname_str_dbg(smb_dname
),
2950 (unsigned int)access_mask
,
2951 (unsigned int)share_access
,
2952 (unsigned int)create_options
,
2953 (unsigned int)create_disposition
,
2954 (unsigned int)file_attributes
));
2956 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
2957 access_mask
, &access_mask
);
2958 if (!NT_STATUS_IS_OK(status
)) {
2959 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2960 "on file %s returned %s\n",
2961 smb_fname_str_dbg(smb_dname
),
2962 nt_errstr(status
)));
2966 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2967 !security_token_has_privilege(get_current_nttok(conn
),
2968 SEC_PRIV_SECURITY
)) {
2969 DEBUG(10, ("open_directory: open on %s "
2970 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2971 smb_fname_str_dbg(smb_dname
)));
2972 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2975 switch( create_disposition
) {
2979 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2982 info
= FILE_WAS_OPENED
;
2987 /* If directory exists error. If directory doesn't
2991 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
2992 DEBUG(2, ("open_directory: unable to create "
2993 "%s. Error was %s\n",
2994 smb_fname_str_dbg(smb_dname
),
2995 nt_errstr(status
)));
2999 status
= mkdir_internal(conn
, smb_dname
,
3002 if (!NT_STATUS_IS_OK(status
)) {
3003 DEBUG(2, ("open_directory: unable to create "
3004 "%s. Error was %s\n",
3005 smb_fname_str_dbg(smb_dname
),
3006 nt_errstr(status
)));
3010 info
= FILE_WAS_CREATED
;
3015 * If directory exists open. If directory doesn't
3020 status
= NT_STATUS_OK
;
3021 info
= FILE_WAS_OPENED
;
3023 status
= mkdir_internal(conn
, smb_dname
,
3026 if (NT_STATUS_IS_OK(status
)) {
3027 info
= FILE_WAS_CREATED
;
3029 /* Cope with create race. */
3030 if (!NT_STATUS_EQUAL(status
,
3031 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3032 DEBUG(2, ("open_directory: unable to create "
3033 "%s. Error was %s\n",
3034 smb_fname_str_dbg(smb_dname
),
3035 nt_errstr(status
)));
3038 info
= FILE_WAS_OPENED
;
3044 case FILE_SUPERSEDE
:
3045 case FILE_OVERWRITE
:
3046 case FILE_OVERWRITE_IF
:
3048 DEBUG(5,("open_directory: invalid create_disposition "
3049 "0x%x for directory %s\n",
3050 (unsigned int)create_disposition
,
3051 smb_fname_str_dbg(smb_dname
)));
3052 return NT_STATUS_INVALID_PARAMETER
;
3055 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3056 DEBUG(5,("open_directory: %s is not a directory !\n",
3057 smb_fname_str_dbg(smb_dname
)));
3058 return NT_STATUS_NOT_A_DIRECTORY
;
3061 if (info
== FILE_WAS_OPENED
) {
3062 status
= smbd_check_access_rights(conn
,
3066 if (!NT_STATUS_IS_OK(status
)) {
3067 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3068 "file %s failed with %s\n",
3069 smb_fname_str_dbg(smb_dname
),
3070 nt_errstr(status
)));
3075 status
= file_new(req
, conn
, &fsp
);
3076 if(!NT_STATUS_IS_OK(status
)) {
3081 * Setup the files_struct for it.
3084 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3085 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3086 fsp
->file_pid
= req
? req
->smbpid
: 0;
3087 fsp
->can_lock
= False
;
3088 fsp
->can_read
= False
;
3089 fsp
->can_write
= False
;
3091 fsp
->share_access
= share_access
;
3092 fsp
->fh
->private_options
= 0;
3094 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3096 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3097 fsp
->print_file
= NULL
;
3098 fsp
->modified
= False
;
3099 fsp
->oplock_type
= NO_OPLOCK
;
3100 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3101 fsp
->is_directory
= True
;
3102 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3103 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3104 if (!NT_STATUS_IS_OK(status
)) {
3105 file_free(req
, fsp
);
3109 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3112 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3114 /* POSIX allows us to open a directory with O_RDONLY. */
3115 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3117 if (!NT_STATUS_IS_OK(status
)) {
3118 DEBUG(5, ("open_directory: Could not open fd for "
3120 smb_fname_str_dbg(smb_dname
),
3121 nt_errstr(status
)));
3122 file_free(req
, fsp
);
3126 status
= vfs_stat_fsp(fsp
);
3127 if (!NT_STATUS_IS_OK(status
)) {
3129 file_free(req
, fsp
);
3133 /* Ensure there was no race condition. */
3134 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3135 DEBUG(5,("open_directory: stat struct differs for "
3137 smb_fname_str_dbg(smb_dname
)));
3139 file_free(req
, fsp
);
3140 return NT_STATUS_ACCESS_DENIED
;
3143 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3144 conn
->connectpath
, smb_dname
,
3148 DEBUG(0, ("open_directory: Could not get share mode lock for "
3149 "%s\n", smb_fname_str_dbg(smb_dname
)));
3151 file_free(req
, fsp
);
3152 return NT_STATUS_SHARING_VIOLATION
;
3155 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3156 access_mask
, share_access
,
3157 create_options
, &dir_existed
);
3159 if (!NT_STATUS_IS_OK(status
)) {
3162 file_free(req
, fsp
);
3166 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3167 req
? req
->mid
: 0, NO_OPLOCK
);
3169 /* For directories the delete on close bit at open time seems
3170 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3171 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3172 status
= can_set_delete_on_close(fsp
, 0);
3173 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3176 file_free(req
, fsp
);
3180 if (NT_STATUS_IS_OK(status
)) {
3181 /* Note that here we set the *inital* delete on close flag,
3182 not the regular one. The magic gets handled in close. */
3183 fsp
->initial_delete_on_close
= True
;
3194 return NT_STATUS_OK
;
3197 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3198 struct smb_filename
*smb_dname
)
3203 status
= SMB_VFS_CREATE_FILE(
3206 0, /* root_dir_fid */
3207 smb_dname
, /* fname */
3208 FILE_READ_ATTRIBUTES
, /* access_mask */
3209 FILE_SHARE_NONE
, /* share_access */
3210 FILE_CREATE
, /* create_disposition*/
3211 FILE_DIRECTORY_FILE
, /* create_options */
3212 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3213 0, /* oplock_request */
3214 0, /* allocation_size */
3215 0, /* private_flags */
3221 if (NT_STATUS_IS_OK(status
)) {
3222 close_file(req
, fsp
, NORMAL_CLOSE
);
3228 /****************************************************************************
3229 Receive notification that one of our open files has been renamed by another
3231 ****************************************************************************/
3233 void msg_file_was_renamed(struct messaging_context
*msg
,
3236 struct server_id server_id
,
3240 char *frm
= (char *)data
->data
;
3242 const char *sharepath
;
3243 const char *base_name
;
3244 const char *stream_name
;
3245 struct smb_filename
*smb_fname
= NULL
;
3246 size_t sp_len
, bn_len
;
3248 struct smbd_server_connection
*sconn
=
3249 talloc_get_type_abort(private_data
,
3250 struct smbd_server_connection
);
3252 if (data
->data
== NULL
3253 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3254 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3255 (int)data
->length
));
3259 /* Unpack the message. */
3260 pull_file_id_24(frm
, &id
);
3261 sharepath
= &frm
[24];
3262 sp_len
= strlen(sharepath
);
3263 base_name
= sharepath
+ sp_len
+ 1;
3264 bn_len
= strlen(base_name
);
3265 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3267 /* stream_name must always be NULL if there is no stream. */
3268 if (stream_name
[0] == '\0') {
3272 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3273 stream_name
, NULL
, &smb_fname
);
3274 if (!NT_STATUS_IS_OK(status
)) {
3278 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3280 sharepath
, smb_fname_str_dbg(smb_fname
),
3281 file_id_string_tos(&id
)));
3283 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3284 fsp
= file_find_di_next(fsp
)) {
3285 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3287 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3288 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3289 smb_fname_str_dbg(smb_fname
)));
3290 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3291 if (!NT_STATUS_IS_OK(status
)) {
3296 /* Now we have the complete path we can work out if this is
3297 actually within this share and adjust newname accordingly. */
3298 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3299 "not sharepath %s) "
3300 "%s from %s -> %s\n",
3301 fsp
->conn
->connectpath
,
3305 smb_fname_str_dbg(smb_fname
)));
3309 TALLOC_FREE(smb_fname
);
3314 * If a main file is opened for delete, all streams need to be checked for
3315 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3316 * If that works, delete them all by setting the delete on close and close.
3319 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3322 struct stream_struct
*stream_info
= NULL
;
3323 files_struct
**streams
= NULL
;
3325 unsigned int num_streams
= 0;
3326 TALLOC_CTX
*frame
= talloc_stackframe();
3329 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3330 &num_streams
, &stream_info
);
3332 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3333 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3334 DEBUG(10, ("no streams around\n"));
3336 return NT_STATUS_OK
;
3339 if (!NT_STATUS_IS_OK(status
)) {
3340 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3341 nt_errstr(status
)));
3345 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3348 if (num_streams
== 0) {
3350 return NT_STATUS_OK
;
3353 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3354 if (streams
== NULL
) {
3355 DEBUG(0, ("talloc failed\n"));
3356 status
= NT_STATUS_NO_MEMORY
;
3360 for (i
=0; i
<num_streams
; i
++) {
3361 struct smb_filename
*smb_fname
= NULL
;
3363 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3368 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3369 stream_info
[i
].name
,
3371 if (!NT_STATUS_IS_OK(status
)) {
3375 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3376 DEBUG(10, ("Unable to stat stream: %s\n",
3377 smb_fname_str_dbg(smb_fname
)));
3380 status
= SMB_VFS_CREATE_FILE(
3383 0, /* root_dir_fid */
3384 smb_fname
, /* fname */
3385 DELETE_ACCESS
, /* access_mask */
3386 (FILE_SHARE_READ
| /* share_access */
3387 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3388 FILE_OPEN
, /* create_disposition*/
3389 0, /* create_options */
3390 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3391 0, /* oplock_request */
3392 0, /* allocation_size */
3393 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3396 &streams
[i
], /* result */
3399 if (!NT_STATUS_IS_OK(status
)) {
3400 DEBUG(10, ("Could not open stream %s: %s\n",
3401 smb_fname_str_dbg(smb_fname
),
3402 nt_errstr(status
)));
3404 TALLOC_FREE(smb_fname
);
3407 TALLOC_FREE(smb_fname
);
3411 * don't touch the variable "status" beyond this point :-)
3414 for (i
-= 1 ; i
>= 0; i
--) {
3415 if (streams
[i
] == NULL
) {
3419 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3420 fsp_str_dbg(streams
[i
])));
3421 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3429 /*********************************************************************
3430 Create a default ACL by inheriting from the parent. If no inheritance
3431 from the parent available, don't set anything. This will leave the actual
3432 permissions the new file or directory already got from the filesystem
3433 as the NT ACL when read.
3434 *********************************************************************/
3436 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3438 TALLOC_CTX
*ctx
= talloc_tos();
3439 char *parent_name
= NULL
;
3440 struct security_descriptor
*parent_desc
= NULL
;
3441 NTSTATUS status
= NT_STATUS_OK
;
3442 struct security_descriptor
*psd
= NULL
;
3443 struct dom_sid
*owner_sid
= NULL
;
3444 struct dom_sid
*group_sid
= NULL
;
3445 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3446 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3447 bool inheritable_components
= false;
3450 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3451 return NT_STATUS_NO_MEMORY
;
3454 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3456 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3458 if (!NT_STATUS_IS_OK(status
)) {
3462 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3465 if (!inheritable_components
&& !inherit_owner
) {
3466 /* Nothing to inherit and not setting owner. */
3467 return NT_STATUS_OK
;
3470 /* Create an inherited descriptor from the parent. */
3472 if (DEBUGLEVEL
>= 10) {
3473 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3474 fsp_str_dbg(fsp
) ));
3475 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3478 /* Inherit from parent descriptor if "inherit owner" set. */
3479 if (inherit_owner
) {
3480 owner_sid
= parent_desc
->owner_sid
;
3481 group_sid
= parent_desc
->group_sid
;
3484 if (owner_sid
== NULL
) {
3485 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3487 if (group_sid
== NULL
) {
3488 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3491 status
= se_create_child_secdesc(ctx
,
3498 if (!NT_STATUS_IS_OK(status
)) {
3502 /* If inheritable_components == false,
3503 se_create_child_secdesc()
3504 creates a security desriptor with a NULL dacl
3505 entry, but with SEC_DESC_DACL_PRESENT. We need
3506 to remove that flag. */
3508 if (!inheritable_components
) {
3509 security_info_sent
&= ~SECINFO_DACL
;
3510 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3513 if (DEBUGLEVEL
>= 10) {
3514 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3515 fsp_str_dbg(fsp
) ));
3516 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3519 if (inherit_owner
) {
3520 /* We need to be root to force this. */
3523 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3526 if (inherit_owner
) {
3533 * Wrapper around open_file_ntcreate and open_directory
3536 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3537 struct smb_request
*req
,
3538 struct smb_filename
*smb_fname
,
3539 uint32_t access_mask
,
3540 uint32_t share_access
,
3541 uint32_t create_disposition
,
3542 uint32_t create_options
,
3543 uint32_t file_attributes
,
3544 uint32_t oplock_request
,
3545 uint64_t allocation_size
,
3546 uint32_t private_flags
,
3547 struct security_descriptor
*sd
,
3548 struct ea_list
*ea_list
,
3550 files_struct
**result
,
3553 int info
= FILE_WAS_OPENED
;
3554 files_struct
*base_fsp
= NULL
;
3555 files_struct
*fsp
= NULL
;
3558 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3559 "file_attributes = 0x%x, share_access = 0x%x, "
3560 "create_disposition = 0x%x create_options = 0x%x "
3561 "oplock_request = 0x%x private_flags = 0x%x "
3562 "ea_list = 0x%p, sd = 0x%p, "
3564 (unsigned int)access_mask
,
3565 (unsigned int)file_attributes
,
3566 (unsigned int)share_access
,
3567 (unsigned int)create_disposition
,
3568 (unsigned int)create_options
,
3569 (unsigned int)oplock_request
,
3570 (unsigned int)private_flags
,
3571 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3573 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3574 status
= NT_STATUS_NOT_SUPPORTED
;
3578 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3579 status
= NT_STATUS_INVALID_PARAMETER
;
3584 oplock_request
|= INTERNAL_OPEN_ONLY
;
3587 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3588 && (access_mask
& DELETE_ACCESS
)
3589 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3591 * We can't open a file with DELETE access if any of the
3592 * streams is open without FILE_SHARE_DELETE
3594 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3596 if (!NT_STATUS_IS_OK(status
)) {
3601 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3602 !security_token_has_privilege(get_current_nttok(conn
),
3603 SEC_PRIV_SECURITY
)) {
3604 DEBUG(10, ("create_file_unixpath: open on %s "
3605 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3606 smb_fname_str_dbg(smb_fname
)));
3607 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3611 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3612 && is_ntfs_stream_smb_fname(smb_fname
)
3613 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3614 uint32 base_create_disposition
;
3615 struct smb_filename
*smb_fname_base
= NULL
;
3617 if (create_options
& FILE_DIRECTORY_FILE
) {
3618 status
= NT_STATUS_NOT_A_DIRECTORY
;
3622 switch (create_disposition
) {
3624 base_create_disposition
= FILE_OPEN
;
3627 base_create_disposition
= FILE_OPEN_IF
;
3631 /* Create an smb_filename with stream_name == NULL. */
3632 status
= create_synthetic_smb_fname(talloc_tos(),
3633 smb_fname
->base_name
,
3636 if (!NT_STATUS_IS_OK(status
)) {
3640 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3641 DEBUG(10, ("Unable to stat stream: %s\n",
3642 smb_fname_str_dbg(smb_fname_base
)));
3645 /* Open the base file. */
3646 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3649 | FILE_SHARE_DELETE
,
3650 base_create_disposition
,
3651 0, 0, 0, 0, 0, NULL
, NULL
,
3653 TALLOC_FREE(smb_fname_base
);
3655 if (!NT_STATUS_IS_OK(status
)) {
3656 DEBUG(10, ("create_file_unixpath for base %s failed: "
3657 "%s\n", smb_fname
->base_name
,
3658 nt_errstr(status
)));
3661 /* we don't need to low level fd */
3666 * If it's a request for a directory open, deal with it separately.
3669 if (create_options
& FILE_DIRECTORY_FILE
) {
3671 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3672 status
= NT_STATUS_INVALID_PARAMETER
;
3676 /* Can't open a temp directory. IFS kit test. */
3677 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3678 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3679 status
= NT_STATUS_INVALID_PARAMETER
;
3684 * We will get a create directory here if the Win32
3685 * app specified a security descriptor in the
3686 * CreateDirectory() call.
3690 status
= open_directory(
3691 conn
, req
, smb_fname
, access_mask
, share_access
,
3692 create_disposition
, create_options
, file_attributes
,
3697 * Ordinary file case.
3700 status
= file_new(req
, conn
, &fsp
);
3701 if(!NT_STATUS_IS_OK(status
)) {
3705 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3706 if (!NT_STATUS_IS_OK(status
)) {
3712 * We're opening the stream element of a
3713 * base_fsp we already opened. Set up the
3716 fsp
->base_fsp
= base_fsp
;
3719 if (allocation_size
) {
3720 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3724 status
= open_file_ntcreate(conn
,
3736 if(!NT_STATUS_IS_OK(status
)) {
3737 file_free(req
, fsp
);
3741 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3743 /* A stream open never opens a directory */
3746 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3751 * Fail the open if it was explicitly a non-directory
3755 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3756 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3761 status
= open_directory(
3762 conn
, req
, smb_fname
, access_mask
,
3763 share_access
, create_disposition
,
3764 create_options
, file_attributes
,
3769 if (!NT_STATUS_IS_OK(status
)) {
3773 fsp
->base_fsp
= base_fsp
;
3775 if ((ea_list
!= NULL
) &&
3776 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3777 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3778 if (!NT_STATUS_IS_OK(status
)) {
3783 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3784 status
= NT_STATUS_ACCESS_DENIED
;
3788 /* Save the requested allocation size. */
3789 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3791 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3792 fsp
->initial_allocation_size
= smb_roundup(
3793 fsp
->conn
, allocation_size
);
3794 if (fsp
->is_directory
) {
3795 /* Can't set allocation size on a directory. */
3796 status
= NT_STATUS_ACCESS_DENIED
;
3799 if (vfs_allocate_file_space(
3800 fsp
, fsp
->initial_allocation_size
) == -1) {
3801 status
= NT_STATUS_DISK_FULL
;
3805 fsp
->initial_allocation_size
= smb_roundup(
3806 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3809 fsp
->initial_allocation_size
= 0;
3812 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3813 fsp
->base_fsp
== NULL
) {
3816 * According to the MS documentation, the only time the security
3817 * descriptor is applied to the opened file is iff we *created* the
3818 * file; an existing file stays the same.
3820 * Also, it seems (from observation) that you can open the file with
3821 * any access mask but you can still write the sd. We need to override
3822 * the granted access before we call set_sd
3823 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3826 uint32_t sec_info_sent
;
3827 uint32_t saved_access_mask
= fsp
->access_mask
;
3829 sec_info_sent
= get_sec_info(sd
);
3831 fsp
->access_mask
= FILE_GENERIC_ALL
;
3833 if (sec_info_sent
& (SECINFO_OWNER
|
3837 status
= set_sd(fsp
, sd
, sec_info_sent
);
3840 fsp
->access_mask
= saved_access_mask
;
3842 if (!NT_STATUS_IS_OK(status
)) {
3845 } else if (lp_inherit_acls(SNUM(conn
))) {
3846 /* Inherit from parent. Errors here are not fatal. */
3847 status
= inherit_new_acl(fsp
);
3848 if (!NT_STATUS_IS_OK(status
)) {
3849 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3851 nt_errstr(status
) ));
3856 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3859 if (pinfo
!= NULL
) {
3863 smb_fname
->st
= fsp
->fsp_name
->st
;
3865 return NT_STATUS_OK
;
3868 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3871 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3873 * The close_file below will close
3878 close_file(req
, fsp
, ERROR_CLOSE
);
3881 if (base_fsp
!= NULL
) {
3882 close_file(req
, base_fsp
, ERROR_CLOSE
);
3889 * Calculate the full path name given a relative fid.
3891 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3892 struct smb_request
*req
,
3893 uint16_t root_dir_fid
,
3894 const struct smb_filename
*smb_fname
,
3895 struct smb_filename
**smb_fname_out
)
3897 files_struct
*dir_fsp
;
3898 char *parent_fname
= NULL
;
3899 char *new_base_name
= NULL
;
3902 if (root_dir_fid
== 0 || !smb_fname
) {
3903 status
= NT_STATUS_INTERNAL_ERROR
;
3907 dir_fsp
= file_fsp(req
, root_dir_fid
);
3909 if (dir_fsp
== NULL
) {
3910 status
= NT_STATUS_INVALID_HANDLE
;
3914 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3915 status
= NT_STATUS_INVALID_HANDLE
;
3919 if (!dir_fsp
->is_directory
) {
3922 * Check to see if this is a mac fork of some kind.
3925 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3926 is_ntfs_stream_smb_fname(smb_fname
)) {
3927 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3932 we need to handle the case when we get a
3933 relative open relative to a file and the
3934 pathname is blank - this is a reopen!
3935 (hint from demyn plantenberg)
3938 status
= NT_STATUS_INVALID_HANDLE
;
3942 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3944 * We're at the toplevel dir, the final file name
3945 * must not contain ./, as this is filtered out
3946 * normally by srvstr_get_path and unix_convert
3947 * explicitly rejects paths containing ./.
3949 parent_fname
= talloc_strdup(talloc_tos(), "");
3950 if (parent_fname
== NULL
) {
3951 status
= NT_STATUS_NO_MEMORY
;
3955 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3958 * Copy in the base directory name.
3961 parent_fname
= talloc_array(talloc_tos(), char,
3963 if (parent_fname
== NULL
) {
3964 status
= NT_STATUS_NO_MEMORY
;
3967 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3971 * Ensure it ends in a '/'.
3972 * We used TALLOC_SIZE +2 to add space for the '/'.
3976 && (parent_fname
[dir_name_len
-1] != '\\')
3977 && (parent_fname
[dir_name_len
-1] != '/')) {
3978 parent_fname
[dir_name_len
] = '/';
3979 parent_fname
[dir_name_len
+1] = '\0';
3983 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3984 smb_fname
->base_name
);
3985 if (new_base_name
== NULL
) {
3986 status
= NT_STATUS_NO_MEMORY
;
3990 status
= filename_convert(req
,
3992 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3997 if (!NT_STATUS_IS_OK(status
)) {
4002 TALLOC_FREE(parent_fname
);
4003 TALLOC_FREE(new_base_name
);
4007 NTSTATUS
create_file_default(connection_struct
*conn
,
4008 struct smb_request
*req
,
4009 uint16_t root_dir_fid
,
4010 struct smb_filename
*smb_fname
,
4011 uint32_t access_mask
,
4012 uint32_t share_access
,
4013 uint32_t create_disposition
,
4014 uint32_t create_options
,
4015 uint32_t file_attributes
,
4016 uint32_t oplock_request
,
4017 uint64_t allocation_size
,
4018 uint32_t private_flags
,
4019 struct security_descriptor
*sd
,
4020 struct ea_list
*ea_list
,
4021 files_struct
**result
,
4024 int info
= FILE_WAS_OPENED
;
4025 files_struct
*fsp
= NULL
;
4027 bool stream_name
= false;
4029 DEBUG(10,("create_file: access_mask = 0x%x "
4030 "file_attributes = 0x%x, share_access = 0x%x, "
4031 "create_disposition = 0x%x create_options = 0x%x "
4032 "oplock_request = 0x%x "
4033 "private_flags = 0x%x "
4034 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4036 (unsigned int)access_mask
,
4037 (unsigned int)file_attributes
,
4038 (unsigned int)share_access
,
4039 (unsigned int)create_disposition
,
4040 (unsigned int)create_options
,
4041 (unsigned int)oplock_request
,
4042 (unsigned int)private_flags
,
4043 (unsigned int)root_dir_fid
,
4044 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4047 * Calculate the filename from the root_dir_if if necessary.
4050 if (root_dir_fid
!= 0) {
4051 struct smb_filename
*smb_fname_out
= NULL
;
4052 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4053 smb_fname
, &smb_fname_out
);
4054 if (!NT_STATUS_IS_OK(status
)) {
4057 smb_fname
= smb_fname_out
;
4061 * Check to see if this is a mac fork of some kind.
4064 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4066 enum FAKE_FILE_TYPE fake_file_type
;
4068 fake_file_type
= is_fake_file(smb_fname
);
4070 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4073 * Here we go! support for changing the disk quotas
4076 * We need to fake up to open this MAGIC QUOTA file
4077 * and return a valid FID.
4079 * w2k close this file directly after openening xp
4080 * also tries a QUERY_FILE_INFO on the file and then
4083 status
= open_fake_file(req
, conn
, req
->vuid
,
4084 fake_file_type
, smb_fname
,
4086 if (!NT_STATUS_IS_OK(status
)) {
4090 ZERO_STRUCT(smb_fname
->st
);
4094 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4095 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4100 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4102 smb_fname
->stream_name
= NULL
;
4103 /* We have to handle this error here. */
4104 if (create_options
& FILE_DIRECTORY_FILE
) {
4105 status
= NT_STATUS_NOT_A_DIRECTORY
;
4108 if (lp_posix_pathnames()) {
4109 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4111 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4114 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4115 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4120 status
= create_file_unixpath(
4121 conn
, req
, smb_fname
, access_mask
, share_access
,
4122 create_disposition
, create_options
, file_attributes
,
4123 oplock_request
, allocation_size
, private_flags
,
4127 if (!NT_STATUS_IS_OK(status
)) {
4132 DEBUG(10, ("create_file: info=%d\n", info
));
4135 if (pinfo
!= NULL
) {
4138 return NT_STATUS_OK
;
4141 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4144 close_file(req
, fsp
, ERROR_CLOSE
);