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"
31 #include "../librpc/gen_ndr/idmap.h"
32 #include "passdb/lookup_sid.h"
37 extern const struct generic_mapping file_generic_mapping
;
39 struct deferred_open_record
{
40 bool delayed_for_oplocks
;
45 /****************************************************************************
46 If the requester wanted DELETE_ACCESS and was rejected because
47 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
49 ****************************************************************************/
51 static bool parent_override_delete(connection_struct
*conn
,
52 const struct smb_filename
*smb_fname
,
54 uint32_t rejected_mask
)
56 if ((access_mask
& DELETE_ACCESS
) &&
57 (rejected_mask
& DELETE_ACCESS
) &&
58 can_delete_file_in_directory(conn
, smb_fname
)) {
64 /****************************************************************************
65 Check if we have open rights.
66 ****************************************************************************/
68 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
69 const struct smb_filename
*smb_fname
,
73 /* Check if we have rights to open. */
75 struct security_descriptor
*sd
= NULL
;
76 uint32_t rejected_share_access
;
77 uint32_t rejected_mask
= access_mask
;
79 rejected_share_access
= access_mask
& ~(conn
->share_access
);
81 if (rejected_share_access
) {
82 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
84 (unsigned int)access_mask
,
85 smb_fname_str_dbg(smb_fname
),
86 (unsigned int)rejected_share_access
));
87 return NT_STATUS_ACCESS_DENIED
;
90 if (!use_privs
&& get_current_uid(conn
) == (uid_t
)0) {
91 /* I'm sorry sir, I didn't know you were root... */
92 DEBUG(10,("smbd_check_access_rights: root override "
93 "on %s. Granting 0x%x\n",
94 smb_fname_str_dbg(smb_fname
),
95 (unsigned int)access_mask
));
99 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
100 DEBUG(10,("smbd_check_access_rights: not checking ACL "
101 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
102 smb_fname_str_dbg(smb_fname
),
103 (unsigned int)access_mask
));
107 if (access_mask
== DELETE_ACCESS
&&
108 VALID_STAT(smb_fname
->st
) &&
109 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
110 /* We can always delete a symlink. */
111 DEBUG(10,("smbd_check_access_rights: not checking ACL "
112 "on DELETE_ACCESS on symlink %s.\n",
113 smb_fname_str_dbg(smb_fname
) ));
117 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
120 SECINFO_DACL
), talloc_tos(), &sd
);
122 if (!NT_STATUS_IS_OK(status
)) {
123 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
125 smb_fname_str_dbg(smb_fname
),
128 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
136 * If we can access the path to this file, by
137 * default we have FILE_READ_ATTRIBUTES from the
138 * containing directory. See the section:
139 * "Algorithm to Check Access to an Existing File"
142 * se_file_access_check() also takes care of
143 * owner WRITE_DAC and READ_CONTROL.
145 status
= se_file_access_check(sd
,
146 get_current_nttok(conn
),
148 (access_mask
& ~FILE_READ_ATTRIBUTES
),
151 DEBUG(10,("smbd_check_access_rights: file %s requesting "
152 "0x%x returning 0x%x (%s)\n",
153 smb_fname_str_dbg(smb_fname
),
154 (unsigned int)access_mask
,
155 (unsigned int)rejected_mask
,
156 nt_errstr(status
) ));
158 if (!NT_STATUS_IS_OK(status
)) {
159 if (DEBUGLEVEL
>= 10) {
160 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
161 smb_fname_str_dbg(smb_fname
) ));
162 NDR_PRINT_DEBUG(security_descriptor
, sd
);
168 if (NT_STATUS_IS_OK(status
) ||
169 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
173 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
177 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
178 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
179 !lp_store_dos_attributes(SNUM(conn
)) &&
180 (lp_map_readonly(SNUM(conn
)) ||
181 lp_map_archive(SNUM(conn
)) ||
182 lp_map_hidden(SNUM(conn
)) ||
183 lp_map_system(SNUM(conn
)))) {
184 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
186 DEBUG(10,("smbd_check_access_rights: "
188 "FILE_WRITE_ATTRIBUTES "
190 smb_fname_str_dbg(smb_fname
)));
193 if (parent_override_delete(conn
,
197 /* Were we trying to do an open
198 * for delete and didn't get DELETE
199 * access (only) ? Check if the
200 * directory allows DELETE_CHILD.
202 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
205 rejected_mask
&= ~DELETE_ACCESS
;
207 DEBUG(10,("smbd_check_access_rights: "
211 smb_fname_str_dbg(smb_fname
)));
214 if (rejected_mask
!= 0) {
215 return NT_STATUS_ACCESS_DENIED
;
220 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
221 struct smb_filename
*smb_fname
,
222 uint32_t access_mask
)
225 char *parent_dir
= NULL
;
226 struct security_descriptor
*parent_sd
= NULL
;
227 uint32_t access_granted
= 0;
229 if (!parent_dirname(talloc_tos(),
230 smb_fname
->base_name
,
233 return NT_STATUS_NO_MEMORY
;
236 if (get_current_uid(conn
) == (uid_t
)0) {
237 /* I'm sorry sir, I didn't know you were root... */
238 DEBUG(10,("check_parent_access: root override "
239 "on %s. Granting 0x%x\n",
240 smb_fname_str_dbg(smb_fname
),
241 (unsigned int)access_mask
));
245 status
= SMB_VFS_GET_NT_ACL(conn
,
251 if (!NT_STATUS_IS_OK(status
)) {
252 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
253 "%s with error %s\n",
260 * If we can access the path to this file, by
261 * default we have FILE_READ_ATTRIBUTES from the
262 * containing directory. See the section:
263 * "Algorithm to Check Access to an Existing File"
266 * se_file_access_check() also takes care of
267 * owner WRITE_DAC and READ_CONTROL.
269 status
= se_file_access_check(parent_sd
,
270 get_current_nttok(conn
),
272 (access_mask
& ~FILE_READ_ATTRIBUTES
),
274 if(!NT_STATUS_IS_OK(status
)) {
275 DEBUG(5,("check_parent_access: access check "
276 "on directory %s for "
277 "path %s for mask 0x%x returned (0x%x) %s\n",
279 smb_fname
->base_name
,
282 nt_errstr(status
) ));
289 /****************************************************************************
290 fd support routines - attempt to do a dos_open.
291 ****************************************************************************/
293 NTSTATUS
fd_open(struct connection_struct
*conn
,
298 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
299 NTSTATUS status
= NT_STATUS_OK
;
303 * Never follow symlinks on a POSIX client. The
304 * client should be doing this.
307 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
312 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
313 if (fsp
->fh
->fd
== -1) {
314 int posix_errno
= errno
;
316 #if defined(ENOTSUP) && defined(OSF1)
317 /* handle special Tru64 errno */
318 if (errno
== ENOTSUP
) {
323 /* fix broken NetBSD errno */
324 if (errno
== EFTYPE
) {
328 /* fix broken FreeBSD errno */
329 if (errno
== EMLINK
) {
332 #endif /* O_NOFOLLOW */
333 status
= map_nt_error_from_unix(posix_errno
);
334 if (errno
== EMFILE
) {
335 static time_t last_warned
= 0L;
337 if (time((time_t *) NULL
) > last_warned
) {
338 DEBUG(0,("Too many open files, unable "
339 "to open more! smbd's max "
341 lp_max_open_files()));
342 last_warned
= time((time_t *) NULL
);
348 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
349 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
350 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
355 /****************************************************************************
356 Close the file associated with a fsp.
357 ****************************************************************************/
359 NTSTATUS
fd_close(files_struct
*fsp
)
366 if (fsp
->fh
->fd
== -1) {
367 return NT_STATUS_OK
; /* What we used to call a stat open. */
369 if (fsp
->fh
->ref_count
> 1) {
370 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
373 ret
= SMB_VFS_CLOSE(fsp
);
376 return map_nt_error_from_unix(errno
);
381 /****************************************************************************
382 Change the ownership of a file to that of the parent directory.
383 Do this by fd if possible.
384 ****************************************************************************/
386 void change_file_owner_to_parent(connection_struct
*conn
,
387 const char *inherit_from_dir
,
390 struct smb_filename
*smb_fname_parent
= NULL
;
394 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
395 NULL
, NULL
, &smb_fname_parent
);
396 if (!NT_STATUS_IS_OK(status
)) {
400 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
402 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
403 "directory %s. Error was %s\n",
404 smb_fname_str_dbg(smb_fname_parent
),
406 TALLOC_FREE(smb_fname_parent
);
410 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
411 /* Already this uid - no need to change. */
412 DEBUG(10,("change_file_owner_to_parent: file %s "
413 "is already owned by uid %d\n",
415 (int)fsp
->fsp_name
->st
.st_ex_uid
));
416 TALLOC_FREE(smb_fname_parent
);
421 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
424 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
425 "file %s to parent directory uid %u. Error "
426 "was %s\n", fsp_str_dbg(fsp
),
427 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
430 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
431 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
432 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
433 /* Ensure the uid entry is updated. */
434 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
437 TALLOC_FREE(smb_fname_parent
);
440 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
441 const char *inherit_from_dir
,
443 SMB_STRUCT_STAT
*psbuf
)
445 struct smb_filename
*smb_fname_parent
= NULL
;
446 struct smb_filename
*smb_fname_cwd
= NULL
;
447 char *saved_dir
= NULL
;
448 TALLOC_CTX
*ctx
= talloc_tos();
449 NTSTATUS status
= NT_STATUS_OK
;
452 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
454 if (!NT_STATUS_IS_OK(status
)) {
458 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
460 status
= map_nt_error_from_unix(errno
);
461 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
462 "directory %s. Error was %s\n",
463 smb_fname_str_dbg(smb_fname_parent
),
468 /* We've already done an lstat into psbuf, and we know it's a
469 directory. If we can cd into the directory and the dev/ino
470 are the same then we can safely chown without races as
471 we're locking the directory in place by being in it. This
472 should work on any UNIX (thanks tridge :-). JRA.
475 saved_dir
= vfs_GetWd(ctx
,conn
);
477 status
= map_nt_error_from_unix(errno
);
478 DEBUG(0,("change_dir_owner_to_parent: failed to get "
479 "current working directory. Error was %s\n",
484 /* Chdir into the new path. */
485 if (vfs_ChDir(conn
, fname
) == -1) {
486 status
= map_nt_error_from_unix(errno
);
487 DEBUG(0,("change_dir_owner_to_parent: failed to change "
488 "current working directory to %s. Error "
489 "was %s\n", fname
, strerror(errno
) ));
493 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
495 if (!NT_STATUS_IS_OK(status
)) {
499 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
501 status
= map_nt_error_from_unix(errno
);
502 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
503 "directory '.' (%s) Error was %s\n",
504 fname
, strerror(errno
)));
508 /* Ensure we're pointing at the same place. */
509 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
510 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
511 DEBUG(0,("change_dir_owner_to_parent: "
512 "device/inode on directory %s changed. "
513 "Refusing to chown !\n", fname
));
514 status
= NT_STATUS_ACCESS_DENIED
;
518 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
519 /* Already this uid - no need to change. */
520 DEBUG(10,("change_dir_owner_to_parent: directory %s "
521 "is already owned by uid %d\n",
523 (int)smb_fname_cwd
->st
.st_ex_uid
));
524 status
= NT_STATUS_OK
;
529 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
533 status
= map_nt_error_from_unix(errno
);
534 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
535 "directory %s to parent directory uid %u. "
536 "Error was %s\n", fname
,
537 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
540 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
541 "directory %s to parent directory uid %u.\n",
542 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
543 /* Ensure the uid entry is updated. */
544 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
548 vfs_ChDir(conn
,saved_dir
);
550 TALLOC_FREE(smb_fname_parent
);
551 TALLOC_FREE(smb_fname_cwd
);
555 /****************************************************************************
556 Open a file - returning a guaranteed ATOMIC indication of if the
557 file was created or not.
558 ****************************************************************************/
560 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
566 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
567 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
569 *file_created
= false;
571 if (!(flags
& O_CREAT
)) {
573 * We're not creating the file, just pass through.
575 return fd_open(conn
, fsp
, flags
, mode
);
578 if (flags
& O_EXCL
) {
580 * Fail if already exists, just pass through.
582 status
= fd_open(conn
, fsp
, flags
, mode
);
585 * Here we've opened with O_CREAT|O_EXCL. If that went
586 * NT_STATUS_OK, we *know* we created this file.
588 *file_created
= NT_STATUS_IS_OK(status
);
594 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
595 * To know absolutely if we created the file or not,
596 * we can never call O_CREAT without O_EXCL. So if
597 * we think the file existed, try without O_CREAT|O_EXCL.
598 * If we think the file didn't exist, try with
599 * O_CREAT|O_EXCL. Keep bouncing between these two
600 * requests until either the file is created, or
601 * opened. Either way, we keep going until we get
602 * a returnable result (error, or open/create).
606 int curr_flags
= flags
;
609 /* Just try open, do not create. */
610 curr_flags
&= ~(O_CREAT
);
611 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
612 if (NT_STATUS_EQUAL(status
,
613 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
615 * Someone deleted it in the meantime.
618 file_existed
= false;
619 DEBUG(10,("fd_open_atomic: file %s existed. "
621 smb_fname_str_dbg(fsp
->fsp_name
)));
625 /* Try create exclusively, fail if it exists. */
626 curr_flags
|= O_EXCL
;
627 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
628 if (NT_STATUS_EQUAL(status
,
629 NT_STATUS_OBJECT_NAME_COLLISION
)) {
631 * Someone created it in the meantime.
632 * Retry without O_CREAT.
635 DEBUG(10,("fd_open_atomic: file %s "
636 "did not exist. Retry.\n",
637 smb_fname_str_dbg(fsp
->fsp_name
)));
640 if (NT_STATUS_IS_OK(status
)) {
642 * Here we've opened with O_CREAT|O_EXCL
643 * and got success. We *know* we created
646 *file_created
= true;
649 /* Create is done, or failed. */
655 /****************************************************************************
657 ****************************************************************************/
659 static NTSTATUS
open_file(files_struct
*fsp
,
660 connection_struct
*conn
,
661 struct smb_request
*req
,
662 const char *parent_dir
,
665 uint32 access_mask
, /* client requested access mask. */
666 uint32 open_access_mask
, /* what we're actually using in the open. */
667 bool *p_file_created
)
669 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
670 NTSTATUS status
= NT_STATUS_OK
;
671 int accmode
= (flags
& O_ACCMODE
);
672 int local_flags
= flags
;
673 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
678 /* Check permissions */
681 * This code was changed after seeing a client open request
682 * containing the open mode of (DENY_WRITE/read-only) with
683 * the 'create if not exist' bit set. The previous code
684 * would fail to open the file read only on a read-only share
685 * as it was checking the flags parameter directly against O_RDONLY,
686 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
690 if (!CAN_WRITE(conn
)) {
691 /* It's a read-only share - fail if we wanted to write. */
692 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
693 DEBUG(3,("Permission denied opening %s\n",
694 smb_fname_str_dbg(smb_fname
)));
695 return NT_STATUS_ACCESS_DENIED
;
697 if (flags
& O_CREAT
) {
698 /* We don't want to write - but we must make sure that
699 O_CREAT doesn't create the file if we have write
700 access into the directory.
702 flags
&= ~(O_CREAT
|O_EXCL
);
703 local_flags
&= ~(O_CREAT
|O_EXCL
);
708 * This little piece of insanity is inspired by the
709 * fact that an NT client can open a file for O_RDONLY,
710 * but set the create disposition to FILE_EXISTS_TRUNCATE.
711 * If the client *can* write to the file, then it expects to
712 * truncate the file, even though it is opening for readonly.
713 * Quicken uses this stupid trick in backup file creation...
714 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
715 * for helping track this one down. It didn't bite us in 2.0.x
716 * as we always opened files read-write in that release. JRA.
719 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
720 DEBUG(10,("open_file: truncate requested on read-only open "
721 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
722 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
725 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
726 (!file_existed
&& (local_flags
& O_CREAT
)) ||
727 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
731 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
733 * We would block on opening a FIFO with no one else on the
734 * other end. Do what we used to do and add O_NONBLOCK to the
738 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
739 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
740 local_flags
|= O_NONBLOCK
;
744 /* Don't create files with Microsoft wildcard characters. */
747 * wildcard characters are allowed in stream names
748 * only test the basefilename
750 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
752 wild
= smb_fname
->base_name
;
754 if ((local_flags
& O_CREAT
) && !file_existed
&&
756 return NT_STATUS_OBJECT_NAME_INVALID
;
759 /* Can we access this file ? */
760 if (!fsp
->base_fsp
) {
761 /* Only do this check on non-stream open. */
763 status
= smbd_check_access_rights(conn
,
767 } else if (local_flags
& O_CREAT
){
768 status
= check_parent_access(conn
,
772 /* File didn't exist and no O_CREAT. */
773 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
775 if (!NT_STATUS_IS_OK(status
)) {
776 DEBUG(10,("open_file: "
780 "smbd_check_access_rights" :
781 "check_parent_access",
782 smb_fname_str_dbg(smb_fname
),
783 nt_errstr(status
) ));
788 /* Actually do the open */
789 status
= fd_open_atomic(conn
, fsp
, local_flags
,
790 unx_mode
, p_file_created
);
791 if (!NT_STATUS_IS_OK(status
)) {
792 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
793 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
794 nt_errstr(status
),local_flags
,flags
));
798 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
800 /* If we have an fd, this stat should succeed. */
801 DEBUG(0,("Error doing fstat on open file %s "
803 smb_fname_str_dbg(smb_fname
),
805 status
= map_nt_error_from_unix(errno
);
810 if (*p_file_created
) {
811 /* We created this file. */
813 bool need_re_stat
= false;
814 /* Do all inheritance work after we've
815 done a successful fstat call and filled
816 in the stat struct in fsp->fsp_name. */
818 /* Inherit the ACL if required */
819 if (lp_inherit_perms(SNUM(conn
))) {
820 inherit_access_posix_acl(conn
, parent_dir
,
821 smb_fname
->base_name
,
826 /* Change the owner if required. */
827 if (lp_inherit_owner(SNUM(conn
))) {
828 change_file_owner_to_parent(conn
, parent_dir
,
834 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
835 /* If we have an fd, this stat should succeed. */
837 DEBUG(0,("Error doing fstat on open file %s "
839 smb_fname_str_dbg(smb_fname
),
844 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
845 FILE_NOTIFY_CHANGE_FILE_NAME
,
846 smb_fname
->base_name
);
849 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
851 /* File must exist for a stat open. */
852 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
855 status
= smbd_check_access_rights(conn
,
860 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
862 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
863 /* This is a POSIX stat open for delete
864 * or rename on a symlink that points
866 DEBUG(10,("open_file: allowing POSIX "
867 "open on bad symlink %s\n",
868 smb_fname_str_dbg(smb_fname
)));
869 status
= NT_STATUS_OK
;
872 if (!NT_STATUS_IS_OK(status
)) {
873 DEBUG(10,("open_file: "
874 "smbd_check_access_rights on file "
876 smb_fname_str_dbg(smb_fname
),
877 nt_errstr(status
) ));
883 * POSIX allows read-only opens of directories. We don't
884 * want to do this (we use a different code path for this)
885 * so catch a directory open and return an EISDIR. JRA.
888 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
891 return NT_STATUS_FILE_IS_A_DIRECTORY
;
894 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
895 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
896 fsp
->file_pid
= req
? req
->smbpid
: 0;
897 fsp
->can_lock
= True
;
898 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
901 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
902 fsp
->print_file
= NULL
;
903 fsp
->modified
= False
;
904 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
905 fsp
->is_directory
= False
;
906 if (conn
->aio_write_behind_list
&&
907 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
908 conn
->case_sensitive
)) {
909 fsp
->aio_write_behind
= True
;
912 fsp
->wcp
= NULL
; /* Write cache pointer. */
914 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
915 conn
->session_info
->unix_info
->unix_name
,
916 smb_fname_str_dbg(smb_fname
),
917 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
918 conn
->num_files_open
));
924 /****************************************************************************
925 Check if we can open a file with a share mode.
926 Returns True if conflict, False if not.
927 ****************************************************************************/
929 static bool share_conflict(struct share_mode_entry
*entry
,
933 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
934 "entry->share_access = 0x%x, "
935 "entry->private_options = 0x%x\n",
936 (unsigned int)entry
->access_mask
,
937 (unsigned int)entry
->share_access
,
938 (unsigned int)entry
->private_options
));
940 if (server_id_is_disconnected(&entry
->pid
)) {
942 * note: cleanup should have been done by
943 * delay_for_batch_oplocks()
948 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
949 (unsigned int)access_mask
, (unsigned int)share_access
));
951 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
955 DELETE_ACCESS
)) == 0) {
956 DEBUG(10,("share_conflict: No conflict due to "
957 "entry->access_mask = 0x%x\n",
958 (unsigned int)entry
->access_mask
));
962 if ((access_mask
& (FILE_WRITE_DATA
|
966 DELETE_ACCESS
)) == 0) {
967 DEBUG(10,("share_conflict: No conflict due to "
968 "access_mask = 0x%x\n",
969 (unsigned int)access_mask
));
973 #if 1 /* JRA TEST - Superdebug. */
974 #define CHECK_MASK(num, am, right, sa, share) \
975 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
976 (unsigned int)(num), (unsigned int)(am), \
977 (unsigned int)(right), (unsigned int)(am)&(right) )); \
978 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
979 (unsigned int)(num), (unsigned int)(sa), \
980 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
981 if (((am) & (right)) && !((sa) & (share))) { \
982 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
983 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
984 (unsigned int)(share) )); \
988 #define CHECK_MASK(num, am, right, sa, share) \
989 if (((am) & (right)) && !((sa) & (share))) { \
990 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
991 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
992 (unsigned int)(share) )); \
997 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
998 share_access
, FILE_SHARE_WRITE
);
999 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
1000 entry
->share_access
, FILE_SHARE_WRITE
);
1002 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
1003 share_access
, FILE_SHARE_READ
);
1004 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
1005 entry
->share_access
, FILE_SHARE_READ
);
1007 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
1008 share_access
, FILE_SHARE_DELETE
);
1009 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
1010 entry
->share_access
, FILE_SHARE_DELETE
);
1012 DEBUG(10,("share_conflict: No conflict.\n"));
1016 #if defined(DEVELOPER)
1017 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1019 struct share_mode_entry
*share_entry
)
1021 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1024 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1028 if (is_deferred_open_entry(share_entry
) &&
1029 !open_was_deferred(sconn
, share_entry
->op_mid
))
1031 char *str
= talloc_asprintf(talloc_tos(),
1032 "Got a deferred entry without a request: "
1034 share_mode_str(talloc_tos(), num
, share_entry
));
1038 if (!is_valid_share_mode_entry(share_entry
)) {
1042 fsp
= file_find_dif(sconn
, share_entry
->id
,
1043 share_entry
->share_file_id
);
1045 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1046 share_mode_str(talloc_tos(), num
, share_entry
) ));
1047 smb_panic("validate_my_share_entries: Cannot match a "
1048 "share entry with an open file\n");
1051 if (is_deferred_open_entry(share_entry
)) {
1055 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1056 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
))
1058 /* Someone has already written to it, but I haven't yet
1063 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1072 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1073 share_mode_str(talloc_tos(), num
, share_entry
) ));
1074 str
= talloc_asprintf(talloc_tos(),
1075 "validate_my_share_entries: "
1076 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1077 fsp
->fsp_name
->base_name
,
1078 (unsigned int)fsp
->oplock_type
,
1079 (unsigned int)share_entry
->op_type
);
1085 bool is_stat_open(uint32 access_mask
)
1087 const uint32_t stat_open_bits
=
1088 (SYNCHRONIZE_ACCESS
|
1089 FILE_READ_ATTRIBUTES
|
1090 FILE_WRITE_ATTRIBUTES
);
1092 return (((access_mask
& stat_open_bits
) != 0) &&
1093 ((access_mask
& ~stat_open_bits
) == 0));
1096 /****************************************************************************
1097 Deal with share modes
1098 Invarient: Share mode must be locked on entry and exit.
1099 Returns -1 on error, or number of share modes on success (may be zero).
1100 ****************************************************************************/
1102 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1103 struct share_mode_lock
*lck
,
1106 uint32 share_access
,
1107 uint32 create_options
,
1112 if(lck
->data
->num_share_modes
== 0) {
1113 return NT_STATUS_OK
;
1116 /* A delete on close prohibits everything */
1118 if (is_delete_on_close_set(lck
, name_hash
)) {
1120 * Check the delete on close token
1121 * is valid. It could have been left
1122 * after a server crash.
1124 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1125 if (!share_mode_stale_pid(lck
->data
, i
)) {
1127 *file_existed
= true;
1129 return NT_STATUS_DELETE_PENDING
;
1132 return NT_STATUS_OK
;
1135 if (is_stat_open(access_mask
)) {
1136 /* Stat open that doesn't trigger oplock breaks or share mode
1137 * checks... ! JRA. */
1138 return NT_STATUS_OK
;
1142 * Check if the share modes will give us access.
1145 #if defined(DEVELOPER)
1146 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1147 validate_my_share_entries(conn
->sconn
, i
,
1148 &lck
->data
->share_modes
[i
]);
1152 /* Now we check the share modes, after any oplock breaks. */
1153 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1155 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1159 /* someone else has a share lock on it, check to see if we can
1161 if (share_conflict(&lck
->data
->share_modes
[i
],
1162 access_mask
, share_access
)) {
1164 if (share_mode_stale_pid(lck
->data
, i
)) {
1168 *file_existed
= true;
1170 return NT_STATUS_SHARING_VIOLATION
;
1174 if (lck
->data
->num_share_modes
!= 0) {
1175 *file_existed
= true;
1178 return NT_STATUS_OK
;
1182 * Send a break message to the oplock holder and delay the open for
1186 static NTSTATUS
send_break_message(files_struct
*fsp
,
1187 struct share_mode_entry
*exclusive
,
1192 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1194 DEBUG(10, ("Sending break request to PID %s\n",
1195 procid_str_static(&exclusive
->pid
)));
1196 exclusive
->op_mid
= mid
;
1198 /* Create the message. */
1199 share_mode_entry_to_message(msg
, exclusive
);
1201 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1202 don't want this set in the share mode struct pointed to by lck. */
1204 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1205 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1206 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1209 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1210 MSG_SMB_BREAK_REQUEST
,
1212 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1213 if (!NT_STATUS_IS_OK(status
)) {
1214 DEBUG(3, ("Could not send oplock break message: %s\n",
1215 nt_errstr(status
)));
1222 * Return share_mode_entry pointers for :
1223 * 1). Batch oplock entry.
1224 * 2). Batch or exclusive oplock entry (may be identical to #1).
1225 * bool have_level2_oplock
1226 * bool have_no_oplock.
1227 * Do internal consistency checks on the share mode for a file.
1230 static void find_oplock_types(files_struct
*fsp
,
1232 const struct share_mode_lock
*lck
,
1233 struct share_mode_entry
**pp_batch
,
1234 struct share_mode_entry
**pp_ex_or_batch
,
1236 bool *got_no_oplock
)
1241 *pp_ex_or_batch
= NULL
;
1242 *got_level2
= false;
1243 *got_no_oplock
= false;
1245 /* Ignore stat or internal opens, as is done in
1246 delay_for_batch_oplocks() and
1247 delay_for_exclusive_oplocks().
1249 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1253 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1254 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1258 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1259 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1260 /* We ignore stat opens in the table - they
1261 always have NO_OPLOCK and never get or
1262 cause breaks. JRA. */
1266 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1267 /* batch - can only be one. */
1268 if (share_mode_stale_pid(lck
->data
, i
)) {
1269 DEBUG(10, ("Found stale batch oplock\n"));
1272 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1273 smb_panic("Bad batch oplock entry.");
1275 *pp_batch
= &lck
->data
->share_modes
[i
];
1278 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1279 if (share_mode_stale_pid(lck
->data
, i
)) {
1280 DEBUG(10, ("Found stale duplicate oplock\n"));
1283 /* Exclusive or batch - can only be one. */
1284 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1285 smb_panic("Bad exclusive or batch oplock entry.");
1287 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1290 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1291 if (*pp_batch
|| *pp_ex_or_batch
) {
1292 if (share_mode_stale_pid(lck
->data
, i
)) {
1293 DEBUG(10, ("Found stale LevelII "
1297 smb_panic("Bad levelII oplock entry.");
1302 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1303 if (*pp_batch
|| *pp_ex_or_batch
) {
1304 if (share_mode_stale_pid(lck
->data
, i
)) {
1305 DEBUG(10, ("Found stale NO_OPLOCK "
1309 smb_panic("Bad no oplock entry.");
1311 *got_no_oplock
= true;
1316 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1319 struct share_mode_entry
*batch_entry
)
1321 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1324 if (batch_entry
== NULL
) {
1328 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1331 * This could be achieved by sending a break message
1332 * to ourselves. Special considerations for files
1333 * with delete_on_close flag set!
1335 * For now we keep it simple and do not
1336 * allow delete on close for durable handles.
1341 /* Found a batch oplock */
1342 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1346 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1349 struct share_mode_entry
*ex_entry
)
1351 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1354 if (ex_entry
== NULL
) {
1358 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1360 * since only durable handles can get disconnected,
1361 * and we can only get durable handles with batch oplocks,
1362 * this should actually never be reached...
1367 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1371 static bool file_has_brlocks(files_struct
*fsp
)
1373 struct byte_range_lock
*br_lck
;
1375 br_lck
= brl_get_locks_readonly(fsp
);
1379 return br_lck
->num_locks
> 0 ? true : false;
1382 static void grant_fsp_oplock_type(files_struct
*fsp
,
1384 bool got_level2_oplock
,
1385 bool got_a_none_oplock
)
1387 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1388 lp_level2_oplocks(SNUM(fsp
->conn
));
1390 /* Start by granting what the client asked for,
1391 but ensure no SAMBA_PRIVATE bits can be set. */
1392 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1394 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1395 /* No oplocks on internal open. */
1396 fsp
->oplock_type
= NO_OPLOCK
;
1397 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1398 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1402 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1403 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1405 fsp
->oplock_type
= NO_OPLOCK
;
1408 if (is_stat_open(fsp
->access_mask
)) {
1409 /* Leave the value already set. */
1410 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1411 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1416 * Match what was requested (fsp->oplock_type) with
1417 * what was found in the existing share modes.
1420 if (got_a_none_oplock
) {
1421 fsp
->oplock_type
= NO_OPLOCK
;
1422 } else if (got_level2_oplock
) {
1423 if (fsp
->oplock_type
== NO_OPLOCK
||
1424 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1425 /* Store a level2 oplock, but don't tell the client */
1426 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1428 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1431 /* All share_mode_entries are placeholders or deferred.
1432 * Silently upgrade to fake levelII if the client didn't
1433 * ask for an oplock. */
1434 if (fsp
->oplock_type
== NO_OPLOCK
) {
1435 /* Store a level2 oplock, but don't tell the client */
1436 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1441 * Don't grant level2 to clients that don't want them
1442 * or if we've turned them off.
1444 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1445 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1448 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1449 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1452 static bool request_timed_out(struct timeval request_time
,
1453 struct timeval timeout
)
1455 struct timeval now
, end_time
;
1457 end_time
= timeval_sum(&request_time
, &timeout
);
1458 return (timeval_compare(&end_time
, &now
) < 0);
1461 /****************************************************************************
1462 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1463 ****************************************************************************/
1465 static void defer_open(struct share_mode_lock
*lck
,
1466 struct timeval request_time
,
1467 struct timeval timeout
,
1468 struct smb_request
*req
,
1469 struct deferred_open_record
*state
)
1471 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1473 /* Paranoia check */
1478 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1479 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1481 if (is_deferred_open_entry(e
) &&
1482 serverid_equal(&self
, &e
->pid
) &&
1483 (e
->op_mid
== req
->mid
)) {
1484 DEBUG(0, ("Trying to defer an already deferred "
1485 "request: mid=%llu, exiting\n",
1486 (unsigned long long)req
->mid
));
1488 exit_server("attempt to defer a deferred request");
1493 /* End paranoia check */
1495 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1496 "open entry for mid %llu\n",
1497 (unsigned int)request_time
.tv_sec
,
1498 (unsigned int)request_time
.tv_usec
,
1499 (unsigned long long)req
->mid
));
1501 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1502 state
->id
, (char *)state
, sizeof(*state
))) {
1504 exit_server("push_deferred_open_message_smb failed");
1507 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1512 /****************************************************************************
1513 On overwrite open ensure that the attributes match.
1514 ****************************************************************************/
1516 static bool open_match_attributes(connection_struct
*conn
,
1517 uint32 old_dos_attr
,
1518 uint32 new_dos_attr
,
1519 mode_t existing_unx_mode
,
1520 mode_t new_unx_mode
,
1521 mode_t
*returned_unx_mode
)
1523 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1525 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1526 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1528 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1529 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1530 *returned_unx_mode
= new_unx_mode
;
1532 *returned_unx_mode
= (mode_t
)0;
1535 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1536 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1537 "returned_unx_mode = 0%o\n",
1538 (unsigned int)old_dos_attr
,
1539 (unsigned int)existing_unx_mode
,
1540 (unsigned int)new_dos_attr
,
1541 (unsigned int)*returned_unx_mode
));
1543 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1544 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1545 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1546 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1550 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1551 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1552 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1559 /****************************************************************************
1560 Special FCB or DOS processing in the case of a sharing violation.
1561 Try and find a duplicated file handle.
1562 ****************************************************************************/
1564 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1565 connection_struct
*conn
,
1566 files_struct
*fsp_to_dup_into
,
1567 const struct smb_filename
*smb_fname
,
1572 uint32 share_access
,
1573 uint32 create_options
)
1577 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1578 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1580 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1581 fsp
= file_find_di_next(fsp
)) {
1583 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1584 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1585 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1586 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1587 (unsigned int)fsp
->file_pid
,
1588 (unsigned int)fsp
->fh
->private_options
,
1589 (unsigned int)fsp
->access_mask
));
1591 if (fsp
!= fsp_to_dup_into
&&
1592 fsp
->fh
->fd
!= -1 &&
1593 fsp
->vuid
== vuid
&&
1594 fsp
->file_pid
== file_pid
&&
1595 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1596 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1597 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1598 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1599 strequal(fsp
->fsp_name
->stream_name
,
1600 smb_fname
->stream_name
)) {
1601 DEBUG(10,("fcb_or_dos_open: file match\n"));
1607 return NT_STATUS_NOT_FOUND
;
1610 /* quite an insane set of semantics ... */
1611 if (is_executable(smb_fname
->base_name
) &&
1612 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1613 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1614 return NT_STATUS_INVALID_PARAMETER
;
1617 /* We need to duplicate this fsp. */
1618 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1619 create_options
, fsp_to_dup_into
);
1622 static void schedule_defer_open(struct share_mode_lock
*lck
,
1623 struct timeval request_time
,
1624 struct smb_request
*req
)
1626 struct deferred_open_record state
;
1628 /* This is a relative time, added to the absolute
1629 request_time value to get the absolute timeout time.
1630 Note that if this is the second or greater time we enter
1631 this codepath for this particular request mid then
1632 request_time is left as the absolute time of the *first*
1633 time this request mid was processed. This is what allows
1634 the request to eventually time out. */
1636 struct timeval timeout
;
1638 /* Normally the smbd we asked should respond within
1639 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1640 * the client did, give twice the timeout as a safety
1641 * measure here in case the other smbd is stuck
1642 * somewhere else. */
1644 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1646 /* Nothing actually uses state.delayed_for_oplocks
1647 but it's handy to differentiate in debug messages
1648 between a 30 second delay due to oplock break, and
1649 a 1 second delay for share mode conflicts. */
1651 state
.delayed_for_oplocks
= True
;
1652 state
.async_open
= false;
1653 state
.id
= lck
->data
->id
;
1655 if (!request_timed_out(request_time
, timeout
)) {
1656 defer_open(lck
, request_time
, timeout
, req
, &state
);
1660 /****************************************************************************
1661 Reschedule an open call that went asynchronous.
1662 ****************************************************************************/
1664 static void schedule_async_open(struct timeval request_time
,
1665 struct smb_request
*req
)
1667 struct deferred_open_record state
;
1668 struct timeval timeout
;
1670 timeout
= timeval_set(20, 0);
1673 state
.delayed_for_oplocks
= false;
1674 state
.async_open
= true;
1676 if (!request_timed_out(request_time
, timeout
)) {
1677 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1681 /****************************************************************************
1682 Work out what access_mask to use from what the client sent us.
1683 ****************************************************************************/
1685 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1686 connection_struct
*conn
,
1687 const struct smb_filename
*smb_fname
,
1689 uint32_t *p_access_mask
)
1691 struct security_descriptor
*sd
;
1692 uint32_t access_granted
;
1695 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1696 *p_access_mask
|= FILE_GENERIC_ALL
;
1697 return NT_STATUS_OK
;
1700 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1706 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1708 * File did not exist
1710 *p_access_mask
= FILE_GENERIC_ALL
;
1711 return NT_STATUS_OK
;
1713 if (!NT_STATUS_IS_OK(status
)) {
1714 DEBUG(10,("Could not get acl on file %s: %s\n",
1715 smb_fname_str_dbg(smb_fname
),
1716 nt_errstr(status
)));
1717 return NT_STATUS_ACCESS_DENIED
;
1721 * If we can access the path to this file, by
1722 * default we have FILE_READ_ATTRIBUTES from the
1723 * containing directory. See the section:
1724 * "Algorithm to Check Access to an Existing File"
1727 * se_file_access_check()
1728 * also takes care of owner WRITE_DAC and READ_CONTROL.
1730 status
= se_file_access_check(sd
,
1731 get_current_nttok(conn
),
1733 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1738 if (!NT_STATUS_IS_OK(status
)) {
1739 DEBUG(10, ("Access denied on file %s: "
1740 "when calculating maximum access\n",
1741 smb_fname_str_dbg(smb_fname
)));
1742 return NT_STATUS_ACCESS_DENIED
;
1744 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1746 if (!(access_granted
& DELETE_ACCESS
)) {
1747 if (can_delete_file_in_directory(conn
, smb_fname
)) {
1748 *p_access_mask
|= DELETE_ACCESS
;
1752 return NT_STATUS_OK
;
1755 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1756 const struct smb_filename
*smb_fname
,
1758 uint32_t access_mask
,
1759 uint32_t *access_mask_out
)
1762 uint32_t orig_access_mask
= access_mask
;
1763 uint32_t rejected_share_access
;
1766 * Convert GENERIC bits to specific bits.
1769 se_map_generic(&access_mask
, &file_generic_mapping
);
1771 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1772 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1774 status
= smbd_calculate_maximum_allowed_access(
1775 conn
, smb_fname
, use_privs
, &access_mask
);
1777 if (!NT_STATUS_IS_OK(status
)) {
1781 access_mask
&= conn
->share_access
;
1784 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1786 if (rejected_share_access
) {
1787 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1788 "file %s: rejected by share access mask[0x%08X] "
1789 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1790 smb_fname_str_dbg(smb_fname
),
1792 orig_access_mask
, access_mask
,
1793 rejected_share_access
));
1794 return NT_STATUS_ACCESS_DENIED
;
1797 *access_mask_out
= access_mask
;
1798 return NT_STATUS_OK
;
1801 /****************************************************************************
1802 Remove the deferred open entry under lock.
1803 ****************************************************************************/
1805 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1806 struct server_id pid
)
1808 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1811 DEBUG(0, ("could not get share mode lock\n"));
1814 del_deferred_open_entry(lck
, mid
, pid
);
1818 /****************************************************************************
1819 Return true if this is a state pointer to an asynchronous create.
1820 ****************************************************************************/
1822 bool is_deferred_open_async(const void *ptr
)
1824 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1826 return state
->async_open
;
1829 static bool clear_ads(uint32_t create_disposition
)
1833 switch (create_disposition
) {
1834 case FILE_SUPERSEDE
:
1835 case FILE_OVERWRITE_IF
:
1836 case FILE_OVERWRITE
:
1845 static int disposition_to_open_flags(uint32_t create_disposition
)
1850 * Currently we're using FILE_SUPERSEDE as the same as
1851 * FILE_OVERWRITE_IF but they really are
1852 * different. FILE_SUPERSEDE deletes an existing file
1853 * (requiring delete access) then recreates it.
1856 switch (create_disposition
) {
1857 case FILE_SUPERSEDE
:
1858 case FILE_OVERWRITE_IF
:
1860 * If file exists replace/overwrite. If file doesn't
1863 ret
= O_CREAT
|O_TRUNC
;
1868 * If file exists open. If file doesn't exist error.
1873 case FILE_OVERWRITE
:
1875 * If file exists overwrite. If file doesn't exist
1883 * If file exists error. If file doesn't exist create.
1885 ret
= O_CREAT
|O_EXCL
;
1890 * If file exists open. If file doesn't exist create.
1898 static int calculate_open_access_flags(uint32_t access_mask
,
1900 uint32_t private_flags
)
1902 bool need_write
, need_read
;
1905 * Note that we ignore the append flag as append does not
1906 * mean the same thing under DOS and Unix.
1910 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
1911 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
));
1917 /* DENY_DOS opens are always underlying read-write on the
1918 file handle, no matter what the requested access mask
1922 ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
1923 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|
1924 FILE_READ_EA
|FILE_EXECUTE
));
1932 /****************************************************************************
1933 Open a file with a share mode. Passed in an already created files_struct *.
1934 ****************************************************************************/
1936 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1937 struct smb_request
*req
,
1938 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1939 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1940 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1941 uint32 create_options
, /* options such as delete on close. */
1942 uint32 new_dos_attributes
, /* attributes used for new file. */
1943 int oplock_request
, /* internal Samba oplock codes. */
1944 /* Information (FILE_EXISTS etc.) */
1945 uint32_t private_flags
, /* Samba specific flags. */
1949 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1952 bool file_existed
= VALID_STAT(smb_fname
->st
);
1953 bool def_acl
= False
;
1954 bool posix_open
= False
;
1955 bool new_file_created
= False
;
1956 bool first_open_attempt
= true;
1957 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1958 mode_t new_unx_mode
= (mode_t
)0;
1959 mode_t unx_mode
= (mode_t
)0;
1961 uint32 existing_dos_attributes
= 0;
1962 struct timeval request_time
= timeval_zero();
1963 struct share_mode_lock
*lck
= NULL
;
1964 uint32 open_access_mask
= access_mask
;
1967 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1968 struct share_mode_entry
*batch_entry
= NULL
;
1969 struct share_mode_entry
*exclusive_entry
= NULL
;
1970 bool got_level2_oplock
= false;
1971 bool got_a_none_oplock
= false;
1972 struct timespec old_write_time
;
1975 if (conn
->printer
) {
1977 * Printers are handled completely differently.
1978 * Most of the passed parameters are ignored.
1982 *pinfo
= FILE_WAS_CREATED
;
1985 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1986 smb_fname_str_dbg(smb_fname
)));
1989 DEBUG(0,("open_file_ntcreate: printer open without "
1990 "an SMB request!\n"));
1991 return NT_STATUS_INTERNAL_ERROR
;
1994 return print_spool_open(fsp
, smb_fname
->base_name
,
1998 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
2000 return NT_STATUS_NO_MEMORY
;
2003 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2005 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2006 new_dos_attributes
= 0;
2008 /* Windows allows a new file to be created and
2009 silently removes a FILE_ATTRIBUTE_DIRECTORY
2010 sent by the client. Do the same. */
2012 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
2014 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
2016 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2017 smb_fname
, parent_dir
);
2020 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
2021 "access_mask=0x%x share_access=0x%x "
2022 "create_disposition = 0x%x create_options=0x%x "
2023 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
2024 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
2025 access_mask
, share_access
, create_disposition
,
2026 create_options
, (unsigned int)unx_mode
, oplock_request
,
2027 (unsigned int)private_flags
));
2029 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
2030 DEBUG(0, ("No smb request but not an internal only open!\n"));
2031 return NT_STATUS_INTERNAL_ERROR
;
2035 * Only non-internal opens can be deferred at all
2040 if (get_deferred_open_message_state(req
,
2043 /* Remember the absolute time of the original
2044 request with this mid. We'll use it later to
2045 see if this has timed out. */
2047 /* If it was an async create retry, the file
2050 if (is_deferred_open_async(ptr
)) {
2051 SET_STAT_INVALID(smb_fname
->st
);
2052 file_existed
= false;
2054 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
2055 /* Remove the deferred open entry under lock. */
2056 remove_deferred_open_entry(
2057 state
->id
, req
->mid
,
2058 messaging_server_id(req
->sconn
->msg_ctx
));
2061 /* Ensure we don't reprocess this message. */
2062 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
2064 first_open_attempt
= false;
2069 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
2071 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
2075 /* ignore any oplock requests if oplocks are disabled */
2076 if (!lp_oplocks(SNUM(conn
)) ||
2077 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2078 /* Mask off everything except the private Samba bits. */
2079 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2082 /* this is for OS/2 long file names - say we don't support them */
2083 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2084 /* OS/2 Workplace shell fix may be main code stream in a later
2086 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2088 if (use_nt_status()) {
2089 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2091 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2094 switch( create_disposition
) {
2096 /* If file exists open. If file doesn't exist error. */
2097 if (!file_existed
) {
2098 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2099 "requested for file %s and file "
2101 smb_fname_str_dbg(smb_fname
)));
2103 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2107 case FILE_OVERWRITE
:
2108 /* If file exists overwrite. If file doesn't exist
2110 if (!file_existed
) {
2111 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2112 "requested for file %s and file "
2114 smb_fname_str_dbg(smb_fname
) ));
2116 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2121 /* If file exists error. If file doesn't exist
2124 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2125 "requested for file %s and file "
2126 "already exists.\n",
2127 smb_fname_str_dbg(smb_fname
)));
2128 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2133 return map_nt_error_from_unix(errno
);
2137 case FILE_SUPERSEDE
:
2138 case FILE_OVERWRITE_IF
:
2142 return NT_STATUS_INVALID_PARAMETER
;
2145 flags2
= disposition_to_open_flags(create_disposition
);
2147 /* We only care about matching attributes on file exists and
2150 if (!posix_open
&& file_existed
&&
2151 ((create_disposition
== FILE_OVERWRITE
) ||
2152 (create_disposition
== FILE_OVERWRITE_IF
))) {
2153 if (!open_match_attributes(conn
, existing_dos_attributes
,
2155 smb_fname
->st
.st_ex_mode
,
2156 unx_mode
, &new_unx_mode
)) {
2157 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2158 "for file %s (%x %x) (0%o, 0%o)\n",
2159 smb_fname_str_dbg(smb_fname
),
2160 existing_dos_attributes
,
2162 (unsigned int)smb_fname
->st
.st_ex_mode
,
2163 (unsigned int)unx_mode
));
2165 return NT_STATUS_ACCESS_DENIED
;
2169 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2173 if (!NT_STATUS_IS_OK(status
)) {
2174 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2175 "on file %s returned %s\n",
2176 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2180 open_access_mask
= access_mask
;
2182 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2183 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2186 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2187 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2191 * Note that we ignore the append flag as append does not
2192 * mean the same thing under DOS and Unix.
2195 flags
= calculate_open_access_flags(access_mask
, oplock_request
,
2199 * Currently we only look at FILE_WRITE_THROUGH for create options.
2203 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2208 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2212 if (!posix_open
&& !CAN_WRITE(conn
)) {
2214 * We should really return a permission denied error if either
2215 * O_CREAT or O_TRUNC are set, but for compatibility with
2216 * older versions of Samba we just AND them out.
2218 flags2
&= ~(O_CREAT
|O_TRUNC
);
2221 if (first_open_attempt
&& lp_kernel_oplocks(SNUM(conn
))) {
2223 * With kernel oplocks the open breaking an oplock
2224 * blocks until the oplock holder has given up the
2225 * oplock or closed the file. We prevent this by first
2226 * trying to open the file with O_NONBLOCK (see "man
2227 * fcntl" on Linux). For the second try, triggered by
2228 * an oplock break response, we do not need this
2231 * This is true under the assumption that only Samba
2232 * requests kernel oplocks. Once someone else like
2233 * NFSv4 starts to use that API, we will have to
2234 * modify this by communicating with the NFSv4 server.
2236 flags2
|= O_NONBLOCK
;
2240 * Ensure we can't write on a read-only share or file.
2243 if (flags
!= O_RDONLY
&& file_existed
&&
2244 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2245 DEBUG(5,("open_file_ntcreate: write access requested for "
2246 "file %s on read only %s\n",
2247 smb_fname_str_dbg(smb_fname
),
2248 !CAN_WRITE(conn
) ? "share" : "file" ));
2250 return NT_STATUS_ACCESS_DENIED
;
2253 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2254 fsp
->share_access
= share_access
;
2255 fsp
->fh
->private_options
= private_flags
;
2256 fsp
->access_mask
= open_access_mask
; /* We change this to the
2257 * requested access_mask after
2258 * the open is done. */
2259 fsp
->posix_open
= posix_open
;
2261 /* Ensure no SAMBA_PRIVATE bits can be set. */
2262 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2264 if (timeval_is_zero(&request_time
)) {
2265 request_time
= fsp
->open_time
;
2269 * Ensure we pay attention to default ACLs on directories if required.
2272 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2273 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2274 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2277 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2278 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2279 (unsigned int)flags
, (unsigned int)flags2
,
2280 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2281 (unsigned int)open_access_mask
));
2283 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2284 flags
|flags2
, unx_mode
, access_mask
,
2285 open_access_mask
, &new_file_created
);
2287 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_NETWORK_BUSY
)) {
2288 struct deferred_open_record state
;
2291 * EWOULDBLOCK/EAGAIN maps to NETWORK_BUSY.
2293 if (file_existed
&& S_ISFIFO(fsp
->fsp_name
->st
.st_ex_mode
)) {
2294 DEBUG(10, ("FIFO busy\n"));
2295 return NT_STATUS_NETWORK_BUSY
;
2298 DEBUG(10, ("Internal open busy\n"));
2299 return NT_STATUS_NETWORK_BUSY
;
2303 * From here on we assume this is an oplock break triggered
2306 lck
= get_existing_share_mode_lock(talloc_tos(), fsp
->file_id
);
2308 state
.delayed_for_oplocks
= false;
2309 state
.async_open
= false;
2310 state
.id
= fsp
->file_id
;
2311 defer_open(NULL
, request_time
, timeval_set(0, 0),
2313 DEBUG(10, ("No share mode lock found after "
2314 "EWOULDBLOCK, retrying sync\n"));
2315 return NT_STATUS_SHARING_VIOLATION
;
2318 find_oplock_types(fsp
, 0, lck
, &batch_entry
, &exclusive_entry
,
2319 &got_level2_oplock
, &got_a_none_oplock
);
2321 if (delay_for_batch_oplocks(fsp
, req
->mid
, 0, batch_entry
) ||
2322 delay_for_exclusive_oplocks(fsp
, req
->mid
, 0,
2324 schedule_defer_open(lck
, request_time
, req
);
2326 DEBUG(10, ("Sent oplock break request to kernel "
2327 "oplock holder\n"));
2328 return NT_STATUS_SHARING_VIOLATION
;
2332 * No oplock from Samba around. Immediately retry with
2335 state
.delayed_for_oplocks
= false;
2336 state
.async_open
= false;
2337 state
.id
= lck
->data
->id
;
2338 defer_open(lck
, request_time
, timeval_set(0, 0), req
, &state
);
2340 DEBUG(10, ("No Samba oplock around after EWOULDBLOCK. "
2341 "Retrying sync\n"));
2342 return NT_STATUS_SHARING_VIOLATION
;
2345 if (!NT_STATUS_IS_OK(fsp_open
)) {
2346 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2347 schedule_async_open(request_time
, req
);
2353 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2355 * The file did exist, but some other (local or NFS)
2356 * process either renamed/unlinked and re-created the
2357 * file with different dev/ino after we walked the path,
2358 * but before we did the open. We could retry the
2359 * open but it's a rare enough case it's easier to
2360 * just fail the open to prevent creating any problems
2361 * in the open file db having the wrong dev/ino key.
2365 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2366 "Old (dev=0x%llu, ino =0x%llu). "
2367 "New (dev=0x%llu, ino=0x%llu). Failing open "
2368 " with NT_STATUS_ACCESS_DENIED.\n",
2369 smb_fname_str_dbg(smb_fname
),
2370 (unsigned long long)saved_stat
.st_ex_dev
,
2371 (unsigned long long)saved_stat
.st_ex_ino
,
2372 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2373 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2374 return NT_STATUS_ACCESS_DENIED
;
2377 old_write_time
= smb_fname
->st
.st_ex_mtime
;
2380 * Deal with the race condition where two smbd's detect the
2381 * file doesn't exist and do the create at the same time. One
2382 * of them will win and set a share mode, the other (ie. this
2383 * one) should check if the requested share mode for this
2384 * create is allowed.
2388 * Now the file exists and fsp is successfully opened,
2389 * fsp->dev and fsp->inode are valid and should replace the
2390 * dev=0,inode=0 from a non existent file. Spotted by
2391 * Nadav Danieli <nadavd@exanet.com>. JRA.
2396 lck
= get_share_mode_lock(talloc_tos(), id
,
2398 smb_fname
, &old_write_time
);
2401 DEBUG(0, ("open_file_ntcreate: Could not get share "
2402 "mode lock for %s\n",
2403 smb_fname_str_dbg(smb_fname
)));
2405 return NT_STATUS_SHARING_VIOLATION
;
2408 /* Get the types we need to examine. */
2409 find_oplock_types(fsp
,
2415 &got_a_none_oplock
);
2417 /* First pass - send break only on batch oplocks. */
2418 if ((req
!= NULL
) &&
2419 delay_for_batch_oplocks(fsp
,
2423 schedule_defer_open(lck
, request_time
, req
);
2426 return NT_STATUS_SHARING_VIOLATION
;
2429 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2430 access_mask
, share_access
,
2431 create_options
, &file_existed
);
2433 if (NT_STATUS_IS_OK(status
)) {
2434 /* We might be going to allow this open. Check oplock
2436 /* Second pass - send break for both batch or
2437 * exclusive oplocks. */
2438 if ((req
!= NULL
) &&
2439 delay_for_exclusive_oplocks(
2444 schedule_defer_open(lck
, request_time
, req
);
2447 return NT_STATUS_SHARING_VIOLATION
;
2451 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2452 /* DELETE_PENDING is not deferred for a second */
2458 if (!NT_STATUS_IS_OK(status
)) {
2459 uint32 can_access_mask
;
2460 bool can_access
= True
;
2462 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2464 /* Check if this can be done with the deny_dos and fcb
2467 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2468 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2470 DEBUG(0, ("DOS open without an SMB "
2474 return NT_STATUS_INTERNAL_ERROR
;
2477 /* Use the client requested access mask here,
2478 * not the one we open with. */
2479 status
= fcb_or_dos_open(req
,
2490 if (NT_STATUS_IS_OK(status
)) {
2493 *pinfo
= FILE_WAS_OPENED
;
2495 return NT_STATUS_OK
;
2500 * This next line is a subtlety we need for
2501 * MS-Access. If a file open will fail due to share
2502 * permissions and also for security (access) reasons,
2503 * we need to return the access failed error, not the
2504 * share error. We can't open the file due to kernel
2505 * oplock deadlock (it's possible we failed above on
2506 * the open_mode_check()) so use a userspace check.
2509 if (flags
& O_RDWR
) {
2510 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2511 } else if (flags
& O_WRONLY
) {
2512 can_access_mask
= FILE_WRITE_DATA
;
2514 can_access_mask
= FILE_READ_DATA
;
2517 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2518 !CAN_WRITE(conn
)) ||
2519 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2522 can_access_mask
))) {
2527 * If we're returning a share violation, ensure we
2528 * cope with the braindead 1 second delay.
2531 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2532 lp_defer_sharing_violations()) {
2533 struct timeval timeout
;
2534 struct deferred_open_record state
;
2537 /* this is a hack to speed up torture tests
2539 timeout_usecs
= lp_parm_int(SNUM(conn
),
2540 "smbd","sharedelay",
2541 SHARING_VIOLATION_USEC_WAIT
);
2543 /* This is a relative time, added to the absolute
2544 request_time value to get the absolute timeout time.
2545 Note that if this is the second or greater time we enter
2546 this codepath for this particular request mid then
2547 request_time is left as the absolute time of the *first*
2548 time this request mid was processed. This is what allows
2549 the request to eventually time out. */
2551 timeout
= timeval_set(0, timeout_usecs
);
2553 /* Nothing actually uses state.delayed_for_oplocks
2554 but it's handy to differentiate in debug messages
2555 between a 30 second delay due to oplock break, and
2556 a 1 second delay for share mode conflicts. */
2558 state
.delayed_for_oplocks
= False
;
2559 state
.async_open
= false;
2563 && !request_timed_out(request_time
,
2565 defer_open(lck
, request_time
, timeout
,
2574 * We have detected a sharing violation here
2575 * so return the correct error code
2577 status
= NT_STATUS_SHARING_VIOLATION
;
2579 status
= NT_STATUS_ACCESS_DENIED
;
2584 grant_fsp_oplock_type(fsp
,
2590 * We have the share entry *locked*.....
2593 /* Delete streams if create_disposition requires it */
2594 if (!new_file_created
&& clear_ads(create_disposition
) &&
2595 !is_ntfs_stream_smb_fname(smb_fname
)) {
2596 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2597 if (!NT_STATUS_IS_OK(status
)) {
2604 /* note that we ignore failure for the following. It is
2605 basically a hack for NFS, and NFS will never set one of
2606 these only read them. Nobody but Samba can ever set a deny
2607 mode and we have already checked our more authoritative
2608 locking database for permission to set this deny mode. If
2609 the kernel refuses the operations then the kernel is wrong.
2610 note that GPFS supports it as well - jmcd */
2612 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2614 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2615 if(ret_flock
== -1 ){
2620 return NT_STATUS_SHARING_VIOLATION
;
2625 * At this point onwards, we can guarantee that the share entry
2626 * is locked, whether we created the file or not, and that the
2627 * deny mode is compatible with all current opens.
2631 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2632 * but we don't have to store this - just ignore it on access check.
2634 if (conn
->sconn
->using_smb2
) {
2636 * SMB2 doesn't return it (according to Microsoft tests).
2637 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2638 * File created with access = 0x7 (Read, Write, Delete)
2639 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2641 fsp
->access_mask
= access_mask
;
2643 /* But SMB1 does. */
2644 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2648 /* stat opens on existing files don't get oplocks. */
2649 if (is_stat_open(open_access_mask
)) {
2650 fsp
->oplock_type
= NO_OPLOCK
;
2654 if (new_file_created
) {
2655 info
= FILE_WAS_CREATED
;
2657 if (flags2
& O_TRUNC
) {
2658 info
= FILE_WAS_OVERWRITTEN
;
2660 info
= FILE_WAS_OPENED
;
2669 * Setup the oplock info in both the shared memory and
2673 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2674 if (!NT_STATUS_IS_OK(status
)) {
2676 * Could not get the kernel oplock or there are byte-range
2677 * locks on the file.
2679 fsp
->oplock_type
= NO_OPLOCK
;
2682 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2686 /* Handle strange delete on close create semantics. */
2687 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2689 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2691 if (!NT_STATUS_IS_OK(status
)) {
2692 /* Remember to delete the mode we just added. */
2693 del_share_mode(lck
, fsp
);
2698 /* Note that here we set the *inital* delete on close flag,
2699 not the regular one. The magic gets handled in close. */
2700 fsp
->initial_delete_on_close
= True
;
2703 if (info
!= FILE_WAS_OPENED
) {
2704 /* Files should be initially set as archive */
2705 if (lp_map_archive(SNUM(conn
)) ||
2706 lp_store_dos_attributes(SNUM(conn
))) {
2708 if (file_set_dosmode(conn
, smb_fname
,
2709 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2710 parent_dir
, true) == 0) {
2711 unx_mode
= smb_fname
->st
.st_ex_mode
;
2717 /* Determine sparse flag. */
2719 /* POSIX opens are sparse by default. */
2720 fsp
->is_sparse
= true;
2722 fsp
->is_sparse
= (file_existed
&&
2723 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2727 * Take care of inherited ACLs on created files - if default ACL not
2731 if (!posix_open
&& new_file_created
&& !def_acl
) {
2733 int saved_errno
= errno
; /* We might get ENOSYS in the next
2736 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2738 errno
= saved_errno
; /* Ignore ENOSYS */
2741 } else if (new_unx_mode
) {
2745 /* Attributes need changing. File already existed. */
2748 int saved_errno
= errno
; /* We might get ENOSYS in the
2750 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2752 if (ret
== -1 && errno
== ENOSYS
) {
2753 errno
= saved_errno
; /* Ignore ENOSYS */
2755 DEBUG(5, ("open_file_ntcreate: reset "
2756 "attributes of file %s to 0%o\n",
2757 smb_fname_str_dbg(smb_fname
),
2758 (unsigned int)new_unx_mode
));
2759 ret
= 0; /* Don't do the fchmod below. */
2764 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2765 DEBUG(5, ("open_file_ntcreate: failed to reset "
2766 "attributes of file %s to 0%o\n",
2767 smb_fname_str_dbg(smb_fname
),
2768 (unsigned int)new_unx_mode
));
2771 /* If this is a successful open, we must remove any deferred open
2774 del_deferred_open_entry(lck
, req
->mid
,
2775 messaging_server_id(req
->sconn
->msg_ctx
));
2779 return NT_STATUS_OK
;
2783 /****************************************************************************
2784 Open a file for for write to ensure that we can fchmod it.
2785 ****************************************************************************/
2787 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2788 struct smb_filename
*smb_fname
,
2789 files_struct
**result
)
2791 if (!VALID_STAT(smb_fname
->st
)) {
2792 return NT_STATUS_INVALID_PARAMETER
;
2795 return SMB_VFS_CREATE_FILE(
2798 0, /* root_dir_fid */
2799 smb_fname
, /* fname */
2800 FILE_WRITE_DATA
, /* access_mask */
2801 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2803 FILE_OPEN
, /* create_disposition*/
2804 0, /* create_options */
2805 0, /* file_attributes */
2806 INTERNAL_OPEN_ONLY
, /* oplock_request */
2807 0, /* allocation_size */
2808 0, /* private_flags */
2811 result
, /* result */
2815 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2816 struct smb_filename
*smb_dname
,
2817 uint32 file_attributes
)
2820 char *parent_dir
= NULL
;
2822 bool posix_open
= false;
2823 bool need_re_stat
= false;
2824 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2826 if (!CAN_WRITE(conn
) || (access_mask
& ~(conn
->share_access
))) {
2827 DEBUG(5,("mkdir_internal: failing share access "
2828 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2829 return NT_STATUS_ACCESS_DENIED
;
2832 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2834 return NT_STATUS_NO_MEMORY
;
2837 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2839 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2841 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2844 status
= check_parent_access(conn
,
2847 if(!NT_STATUS_IS_OK(status
)) {
2848 DEBUG(5,("mkdir_internal: check_parent_access "
2849 "on directory %s for path %s returned %s\n",
2851 smb_dname
->base_name
,
2852 nt_errstr(status
) ));
2856 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2857 return map_nt_error_from_unix(errno
);
2860 /* Ensure we're checking for a symlink here.... */
2861 /* We don't want to get caught by a symlink racer. */
2863 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2864 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2865 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2866 return map_nt_error_from_unix(errno
);
2869 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2870 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2871 smb_fname_str_dbg(smb_dname
)));
2872 return NT_STATUS_NOT_A_DIRECTORY
;
2875 if (lp_store_dos_attributes(SNUM(conn
))) {
2877 file_set_dosmode(conn
, smb_dname
,
2878 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2883 if (lp_inherit_perms(SNUM(conn
))) {
2884 inherit_access_posix_acl(conn
, parent_dir
,
2885 smb_dname
->base_name
, mode
);
2886 need_re_stat
= true;
2891 * Check if high bits should have been set,
2892 * then (if bits are missing): add them.
2893 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2896 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2897 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2898 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2899 (smb_dname
->st
.st_ex_mode
|
2900 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2901 need_re_stat
= true;
2905 /* Change the owner if required. */
2906 if (lp_inherit_owner(SNUM(conn
))) {
2907 change_dir_owner_to_parent(conn
, parent_dir
,
2908 smb_dname
->base_name
,
2910 need_re_stat
= true;
2914 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2915 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2916 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2917 return map_nt_error_from_unix(errno
);
2921 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2922 smb_dname
->base_name
);
2924 return NT_STATUS_OK
;
2927 /****************************************************************************
2928 Open a directory from an NT SMB call.
2929 ****************************************************************************/
2931 static NTSTATUS
open_directory(connection_struct
*conn
,
2932 struct smb_request
*req
,
2933 struct smb_filename
*smb_dname
,
2935 uint32 share_access
,
2936 uint32 create_disposition
,
2937 uint32 create_options
,
2938 uint32 file_attributes
,
2940 files_struct
**result
)
2942 files_struct
*fsp
= NULL
;
2943 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2944 struct share_mode_lock
*lck
= NULL
;
2946 struct timespec mtimespec
;
2949 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2950 DEBUG(2, ("open_directory: %s is a stream name!\n",
2951 smb_fname_str_dbg(smb_dname
)));
2952 return NT_STATUS_NOT_A_DIRECTORY
;
2955 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2956 /* Ensure we have a directory attribute. */
2957 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2960 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2961 "share_access = 0x%x create_options = 0x%x, "
2962 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2963 smb_fname_str_dbg(smb_dname
),
2964 (unsigned int)access_mask
,
2965 (unsigned int)share_access
,
2966 (unsigned int)create_options
,
2967 (unsigned int)create_disposition
,
2968 (unsigned int)file_attributes
));
2970 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
2971 access_mask
, &access_mask
);
2972 if (!NT_STATUS_IS_OK(status
)) {
2973 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2974 "on file %s returned %s\n",
2975 smb_fname_str_dbg(smb_dname
),
2976 nt_errstr(status
)));
2980 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2981 !security_token_has_privilege(get_current_nttok(conn
),
2982 SEC_PRIV_SECURITY
)) {
2983 DEBUG(10, ("open_directory: open on %s "
2984 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2985 smb_fname_str_dbg(smb_dname
)));
2986 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2989 switch( create_disposition
) {
2993 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2996 info
= FILE_WAS_OPENED
;
3001 /* If directory exists error. If directory doesn't
3005 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
3006 DEBUG(2, ("open_directory: unable to create "
3007 "%s. Error was %s\n",
3008 smb_fname_str_dbg(smb_dname
),
3009 nt_errstr(status
)));
3013 status
= mkdir_internal(conn
, smb_dname
,
3016 if (!NT_STATUS_IS_OK(status
)) {
3017 DEBUG(2, ("open_directory: unable to create "
3018 "%s. Error was %s\n",
3019 smb_fname_str_dbg(smb_dname
),
3020 nt_errstr(status
)));
3024 info
= FILE_WAS_CREATED
;
3029 * If directory exists open. If directory doesn't
3034 status
= NT_STATUS_OK
;
3035 info
= FILE_WAS_OPENED
;
3037 status
= mkdir_internal(conn
, smb_dname
,
3040 if (NT_STATUS_IS_OK(status
)) {
3041 info
= FILE_WAS_CREATED
;
3043 /* Cope with create race. */
3044 if (!NT_STATUS_EQUAL(status
,
3045 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3046 DEBUG(2, ("open_directory: unable to create "
3047 "%s. Error was %s\n",
3048 smb_fname_str_dbg(smb_dname
),
3049 nt_errstr(status
)));
3052 info
= FILE_WAS_OPENED
;
3058 case FILE_SUPERSEDE
:
3059 case FILE_OVERWRITE
:
3060 case FILE_OVERWRITE_IF
:
3062 DEBUG(5,("open_directory: invalid create_disposition "
3063 "0x%x for directory %s\n",
3064 (unsigned int)create_disposition
,
3065 smb_fname_str_dbg(smb_dname
)));
3066 return NT_STATUS_INVALID_PARAMETER
;
3069 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3070 DEBUG(5,("open_directory: %s is not a directory !\n",
3071 smb_fname_str_dbg(smb_dname
)));
3072 return NT_STATUS_NOT_A_DIRECTORY
;
3075 if (info
== FILE_WAS_OPENED
) {
3076 status
= smbd_check_access_rights(conn
,
3080 if (!NT_STATUS_IS_OK(status
)) {
3081 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3082 "file %s failed with %s\n",
3083 smb_fname_str_dbg(smb_dname
),
3084 nt_errstr(status
)));
3089 status
= file_new(req
, conn
, &fsp
);
3090 if(!NT_STATUS_IS_OK(status
)) {
3095 * Setup the files_struct for it.
3098 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3099 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3100 fsp
->file_pid
= req
? req
->smbpid
: 0;
3101 fsp
->can_lock
= False
;
3102 fsp
->can_read
= False
;
3103 fsp
->can_write
= False
;
3105 fsp
->share_access
= share_access
;
3106 fsp
->fh
->private_options
= 0;
3108 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3110 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3111 fsp
->print_file
= NULL
;
3112 fsp
->modified
= False
;
3113 fsp
->oplock_type
= NO_OPLOCK
;
3114 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3115 fsp
->is_directory
= True
;
3116 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3117 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3118 if (!NT_STATUS_IS_OK(status
)) {
3119 file_free(req
, fsp
);
3123 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3126 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3128 /* POSIX allows us to open a directory with O_RDONLY. */
3129 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3131 if (!NT_STATUS_IS_OK(status
)) {
3132 DEBUG(5, ("open_directory: Could not open fd for "
3134 smb_fname_str_dbg(smb_dname
),
3135 nt_errstr(status
)));
3136 file_free(req
, fsp
);
3140 status
= vfs_stat_fsp(fsp
);
3141 if (!NT_STATUS_IS_OK(status
)) {
3143 file_free(req
, fsp
);
3147 /* Ensure there was no race condition. */
3148 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3149 DEBUG(5,("open_directory: stat struct differs for "
3151 smb_fname_str_dbg(smb_dname
)));
3153 file_free(req
, fsp
);
3154 return NT_STATUS_ACCESS_DENIED
;
3157 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3158 conn
->connectpath
, smb_dname
,
3162 DEBUG(0, ("open_directory: Could not get share mode lock for "
3163 "%s\n", smb_fname_str_dbg(smb_dname
)));
3165 file_free(req
, fsp
);
3166 return NT_STATUS_SHARING_VIOLATION
;
3169 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3170 access_mask
, share_access
,
3171 create_options
, &dir_existed
);
3173 if (!NT_STATUS_IS_OK(status
)) {
3176 file_free(req
, fsp
);
3180 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3181 req
? req
->mid
: 0, NO_OPLOCK
);
3183 /* For directories the delete on close bit at open time seems
3184 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3185 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3186 status
= can_set_delete_on_close(fsp
, 0);
3187 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3190 file_free(req
, fsp
);
3194 if (NT_STATUS_IS_OK(status
)) {
3195 /* Note that here we set the *inital* delete on close flag,
3196 not the regular one. The magic gets handled in close. */
3197 fsp
->initial_delete_on_close
= True
;
3208 return NT_STATUS_OK
;
3211 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3212 struct smb_filename
*smb_dname
)
3217 status
= SMB_VFS_CREATE_FILE(
3220 0, /* root_dir_fid */
3221 smb_dname
, /* fname */
3222 FILE_READ_ATTRIBUTES
, /* access_mask */
3223 FILE_SHARE_NONE
, /* share_access */
3224 FILE_CREATE
, /* create_disposition*/
3225 FILE_DIRECTORY_FILE
, /* create_options */
3226 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3227 0, /* oplock_request */
3228 0, /* allocation_size */
3229 0, /* private_flags */
3235 if (NT_STATUS_IS_OK(status
)) {
3236 close_file(req
, fsp
, NORMAL_CLOSE
);
3242 /****************************************************************************
3243 Receive notification that one of our open files has been renamed by another
3245 ****************************************************************************/
3247 void msg_file_was_renamed(struct messaging_context
*msg
,
3250 struct server_id server_id
,
3254 char *frm
= (char *)data
->data
;
3256 const char *sharepath
;
3257 const char *base_name
;
3258 const char *stream_name
;
3259 struct smb_filename
*smb_fname
= NULL
;
3260 size_t sp_len
, bn_len
;
3262 struct smbd_server_connection
*sconn
=
3263 talloc_get_type_abort(private_data
,
3264 struct smbd_server_connection
);
3266 if (data
->data
== NULL
3267 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3268 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3269 (int)data
->length
));
3273 /* Unpack the message. */
3274 pull_file_id_24(frm
, &id
);
3275 sharepath
= &frm
[24];
3276 sp_len
= strlen(sharepath
);
3277 base_name
= sharepath
+ sp_len
+ 1;
3278 bn_len
= strlen(base_name
);
3279 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3281 /* stream_name must always be NULL if there is no stream. */
3282 if (stream_name
[0] == '\0') {
3286 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3287 stream_name
, NULL
, &smb_fname
);
3288 if (!NT_STATUS_IS_OK(status
)) {
3292 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3294 sharepath
, smb_fname_str_dbg(smb_fname
),
3295 file_id_string_tos(&id
)));
3297 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3298 fsp
= file_find_di_next(fsp
)) {
3299 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3301 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3302 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3303 smb_fname_str_dbg(smb_fname
)));
3304 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3305 if (!NT_STATUS_IS_OK(status
)) {
3310 /* Now we have the complete path we can work out if this is
3311 actually within this share and adjust newname accordingly. */
3312 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3313 "not sharepath %s) "
3314 "%s from %s -> %s\n",
3315 fsp
->conn
->connectpath
,
3319 smb_fname_str_dbg(smb_fname
)));
3323 TALLOC_FREE(smb_fname
);
3328 * If a main file is opened for delete, all streams need to be checked for
3329 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3330 * If that works, delete them all by setting the delete on close and close.
3333 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3336 struct stream_struct
*stream_info
= NULL
;
3337 files_struct
**streams
= NULL
;
3339 unsigned int num_streams
= 0;
3340 TALLOC_CTX
*frame
= talloc_stackframe();
3343 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3344 &num_streams
, &stream_info
);
3346 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3347 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3348 DEBUG(10, ("no streams around\n"));
3350 return NT_STATUS_OK
;
3353 if (!NT_STATUS_IS_OK(status
)) {
3354 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3355 nt_errstr(status
)));
3359 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3362 if (num_streams
== 0) {
3364 return NT_STATUS_OK
;
3367 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3368 if (streams
== NULL
) {
3369 DEBUG(0, ("talloc failed\n"));
3370 status
= NT_STATUS_NO_MEMORY
;
3374 for (i
=0; i
<num_streams
; i
++) {
3375 struct smb_filename
*smb_fname
= NULL
;
3377 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3382 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3383 stream_info
[i
].name
,
3385 if (!NT_STATUS_IS_OK(status
)) {
3389 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3390 DEBUG(10, ("Unable to stat stream: %s\n",
3391 smb_fname_str_dbg(smb_fname
)));
3394 status
= SMB_VFS_CREATE_FILE(
3397 0, /* root_dir_fid */
3398 smb_fname
, /* fname */
3399 DELETE_ACCESS
, /* access_mask */
3400 (FILE_SHARE_READ
| /* share_access */
3401 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3402 FILE_OPEN
, /* create_disposition*/
3403 0, /* create_options */
3404 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3405 0, /* oplock_request */
3406 0, /* allocation_size */
3407 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3410 &streams
[i
], /* result */
3413 if (!NT_STATUS_IS_OK(status
)) {
3414 DEBUG(10, ("Could not open stream %s: %s\n",
3415 smb_fname_str_dbg(smb_fname
),
3416 nt_errstr(status
)));
3418 TALLOC_FREE(smb_fname
);
3421 TALLOC_FREE(smb_fname
);
3425 * don't touch the variable "status" beyond this point :-)
3428 for (i
-= 1 ; i
>= 0; i
--) {
3429 if (streams
[i
] == NULL
) {
3433 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3434 fsp_str_dbg(streams
[i
])));
3435 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3443 /*********************************************************************
3444 Create a default ACL by inheriting from the parent. If no inheritance
3445 from the parent available, don't set anything. This will leave the actual
3446 permissions the new file or directory already got from the filesystem
3447 as the NT ACL when read.
3448 *********************************************************************/
3450 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3452 TALLOC_CTX
*frame
= talloc_stackframe();
3453 char *parent_name
= NULL
;
3454 struct security_descriptor
*parent_desc
= NULL
;
3455 NTSTATUS status
= NT_STATUS_OK
;
3456 struct security_descriptor
*psd
= NULL
;
3457 const struct dom_sid
*owner_sid
= NULL
;
3458 const struct dom_sid
*group_sid
= NULL
;
3459 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3460 struct security_token
*token
= fsp
->conn
->session_info
->security_token
;
3461 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3462 bool inheritable_components
= false;
3463 bool try_builtin_administrators
= false;
3464 const struct dom_sid
*BA_U_sid
= NULL
;
3465 const struct dom_sid
*BA_G_sid
= NULL
;
3466 bool try_system
= false;
3467 const struct dom_sid
*SY_U_sid
= NULL
;
3468 const struct dom_sid
*SY_G_sid
= NULL
;
3471 if (!parent_dirname(frame
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3473 return NT_STATUS_NO_MEMORY
;
3476 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3478 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3481 if (!NT_STATUS_IS_OK(status
)) {
3486 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3489 if (!inheritable_components
&& !inherit_owner
) {
3491 /* Nothing to inherit and not setting owner. */
3492 return NT_STATUS_OK
;
3495 /* Create an inherited descriptor from the parent. */
3497 if (DEBUGLEVEL
>= 10) {
3498 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3499 fsp_str_dbg(fsp
) ));
3500 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3503 /* Inherit from parent descriptor if "inherit owner" set. */
3504 if (inherit_owner
) {
3505 owner_sid
= parent_desc
->owner_sid
;
3506 group_sid
= parent_desc
->group_sid
;
3509 if (owner_sid
== NULL
) {
3510 if (security_token_has_builtin_administrators(token
)) {
3511 try_builtin_administrators
= true;
3512 } else if (security_token_is_system(token
)) {
3513 try_builtin_administrators
= true;
3518 if (group_sid
== NULL
&&
3519 token
->num_sids
== PRIMARY_GROUP_SID_INDEX
)
3521 if (security_token_is_system(token
)) {
3522 try_builtin_administrators
= true;
3527 if (try_builtin_administrators
) {
3532 ok
= sids_to_unixids(&global_sid_Builtin_Administrators
, 1, &ids
);
3536 BA_U_sid
= &global_sid_Builtin_Administrators
;
3537 BA_G_sid
= &global_sid_Builtin_Administrators
;
3540 BA_U_sid
= &global_sid_Builtin_Administrators
;
3543 BA_G_sid
= &global_sid_Builtin_Administrators
;
3556 ok
= sids_to_unixids(&global_sid_System
, 1, &ids
);
3560 SY_U_sid
= &global_sid_System
;
3561 SY_G_sid
= &global_sid_System
;
3564 SY_U_sid
= &global_sid_System
;
3567 SY_G_sid
= &global_sid_System
;
3575 if (owner_sid
== NULL
) {
3576 owner_sid
= BA_U_sid
;
3579 if (owner_sid
== NULL
) {
3580 owner_sid
= SY_U_sid
;
3583 if (group_sid
== NULL
) {
3584 group_sid
= SY_G_sid
;
3587 if (try_system
&& group_sid
== NULL
) {
3588 group_sid
= BA_G_sid
;
3591 if (owner_sid
== NULL
) {
3592 owner_sid
= &token
->sids
[PRIMARY_USER_SID_INDEX
];
3594 if (group_sid
== NULL
) {
3595 if (token
->num_sids
== PRIMARY_GROUP_SID_INDEX
) {
3596 group_sid
= &token
->sids
[PRIMARY_USER_SID_INDEX
];
3598 group_sid
= &token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3602 status
= se_create_child_secdesc(frame
,
3609 if (!NT_STATUS_IS_OK(status
)) {
3614 /* If inheritable_components == false,
3615 se_create_child_secdesc()
3616 creates a security desriptor with a NULL dacl
3617 entry, but with SEC_DESC_DACL_PRESENT. We need
3618 to remove that flag. */
3620 if (!inheritable_components
) {
3621 security_info_sent
&= ~SECINFO_DACL
;
3622 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3625 if (DEBUGLEVEL
>= 10) {
3626 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3627 fsp_str_dbg(fsp
) ));
3628 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3631 if (inherit_owner
) {
3632 /* We need to be root to force this. */
3635 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3638 if (inherit_owner
) {
3646 * Wrapper around open_file_ntcreate and open_directory
3649 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3650 struct smb_request
*req
,
3651 struct smb_filename
*smb_fname
,
3652 uint32_t access_mask
,
3653 uint32_t share_access
,
3654 uint32_t create_disposition
,
3655 uint32_t create_options
,
3656 uint32_t file_attributes
,
3657 uint32_t oplock_request
,
3658 uint64_t allocation_size
,
3659 uint32_t private_flags
,
3660 struct security_descriptor
*sd
,
3661 struct ea_list
*ea_list
,
3663 files_struct
**result
,
3666 int info
= FILE_WAS_OPENED
;
3667 files_struct
*base_fsp
= NULL
;
3668 files_struct
*fsp
= NULL
;
3671 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3672 "file_attributes = 0x%x, share_access = 0x%x, "
3673 "create_disposition = 0x%x create_options = 0x%x "
3674 "oplock_request = 0x%x private_flags = 0x%x "
3675 "ea_list = 0x%p, sd = 0x%p, "
3677 (unsigned int)access_mask
,
3678 (unsigned int)file_attributes
,
3679 (unsigned int)share_access
,
3680 (unsigned int)create_disposition
,
3681 (unsigned int)create_options
,
3682 (unsigned int)oplock_request
,
3683 (unsigned int)private_flags
,
3684 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3686 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3687 status
= NT_STATUS_NOT_SUPPORTED
;
3691 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3692 status
= NT_STATUS_INVALID_PARAMETER
;
3697 oplock_request
|= INTERNAL_OPEN_ONLY
;
3700 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3701 && (access_mask
& DELETE_ACCESS
)
3702 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3704 * We can't open a file with DELETE access if any of the
3705 * streams is open without FILE_SHARE_DELETE
3707 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3709 if (!NT_STATUS_IS_OK(status
)) {
3714 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3715 !security_token_has_privilege(get_current_nttok(conn
),
3716 SEC_PRIV_SECURITY
)) {
3717 DEBUG(10, ("create_file_unixpath: open on %s "
3718 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3719 smb_fname_str_dbg(smb_fname
)));
3720 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3724 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3725 && is_ntfs_stream_smb_fname(smb_fname
)
3726 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3727 uint32 base_create_disposition
;
3728 struct smb_filename
*smb_fname_base
= NULL
;
3730 if (create_options
& FILE_DIRECTORY_FILE
) {
3731 status
= NT_STATUS_NOT_A_DIRECTORY
;
3735 switch (create_disposition
) {
3737 base_create_disposition
= FILE_OPEN
;
3740 base_create_disposition
= FILE_OPEN_IF
;
3744 /* Create an smb_filename with stream_name == NULL. */
3745 status
= create_synthetic_smb_fname(talloc_tos(),
3746 smb_fname
->base_name
,
3749 if (!NT_STATUS_IS_OK(status
)) {
3753 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3754 DEBUG(10, ("Unable to stat stream: %s\n",
3755 smb_fname_str_dbg(smb_fname_base
)));
3758 /* Open the base file. */
3759 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3762 | FILE_SHARE_DELETE
,
3763 base_create_disposition
,
3764 0, 0, 0, 0, 0, NULL
, NULL
,
3766 TALLOC_FREE(smb_fname_base
);
3768 if (!NT_STATUS_IS_OK(status
)) {
3769 DEBUG(10, ("create_file_unixpath for base %s failed: "
3770 "%s\n", smb_fname
->base_name
,
3771 nt_errstr(status
)));
3774 /* we don't need to low level fd */
3779 * If it's a request for a directory open, deal with it separately.
3782 if (create_options
& FILE_DIRECTORY_FILE
) {
3784 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3785 status
= NT_STATUS_INVALID_PARAMETER
;
3789 /* Can't open a temp directory. IFS kit test. */
3790 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3791 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3792 status
= NT_STATUS_INVALID_PARAMETER
;
3797 * We will get a create directory here if the Win32
3798 * app specified a security descriptor in the
3799 * CreateDirectory() call.
3803 status
= open_directory(
3804 conn
, req
, smb_fname
, access_mask
, share_access
,
3805 create_disposition
, create_options
, file_attributes
,
3810 * Ordinary file case.
3813 status
= file_new(req
, conn
, &fsp
);
3814 if(!NT_STATUS_IS_OK(status
)) {
3818 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3819 if (!NT_STATUS_IS_OK(status
)) {
3825 * We're opening the stream element of a
3826 * base_fsp we already opened. Set up the
3829 fsp
->base_fsp
= base_fsp
;
3832 if (allocation_size
) {
3833 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3837 status
= open_file_ntcreate(conn
,
3849 if(!NT_STATUS_IS_OK(status
)) {
3850 file_free(req
, fsp
);
3854 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3856 /* A stream open never opens a directory */
3859 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3864 * Fail the open if it was explicitly a non-directory
3868 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3869 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3874 status
= open_directory(
3875 conn
, req
, smb_fname
, access_mask
,
3876 share_access
, create_disposition
,
3877 create_options
, file_attributes
,
3882 if (!NT_STATUS_IS_OK(status
)) {
3886 fsp
->base_fsp
= base_fsp
;
3888 if ((ea_list
!= NULL
) &&
3889 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3890 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3891 if (!NT_STATUS_IS_OK(status
)) {
3896 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3897 status
= NT_STATUS_ACCESS_DENIED
;
3901 /* Save the requested allocation size. */
3902 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3904 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3905 fsp
->initial_allocation_size
= smb_roundup(
3906 fsp
->conn
, allocation_size
);
3907 if (fsp
->is_directory
) {
3908 /* Can't set allocation size on a directory. */
3909 status
= NT_STATUS_ACCESS_DENIED
;
3912 if (vfs_allocate_file_space(
3913 fsp
, fsp
->initial_allocation_size
) == -1) {
3914 status
= NT_STATUS_DISK_FULL
;
3918 fsp
->initial_allocation_size
= smb_roundup(
3919 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3922 fsp
->initial_allocation_size
= 0;
3925 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3926 fsp
->base_fsp
== NULL
) {
3929 * According to the MS documentation, the only time the security
3930 * descriptor is applied to the opened file is iff we *created* the
3931 * file; an existing file stays the same.
3933 * Also, it seems (from observation) that you can open the file with
3934 * any access mask but you can still write the sd. We need to override
3935 * the granted access before we call set_sd
3936 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3939 uint32_t sec_info_sent
;
3940 uint32_t saved_access_mask
= fsp
->access_mask
;
3942 sec_info_sent
= get_sec_info(sd
);
3944 fsp
->access_mask
= FILE_GENERIC_ALL
;
3946 if (sec_info_sent
& (SECINFO_OWNER
|
3950 status
= set_sd(fsp
, sd
, sec_info_sent
);
3953 fsp
->access_mask
= saved_access_mask
;
3955 if (!NT_STATUS_IS_OK(status
)) {
3958 } else if (lp_inherit_acls(SNUM(conn
))) {
3959 /* Inherit from parent. Errors here are not fatal. */
3960 status
= inherit_new_acl(fsp
);
3961 if (!NT_STATUS_IS_OK(status
)) {
3962 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3964 nt_errstr(status
) ));
3969 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3972 if (pinfo
!= NULL
) {
3976 smb_fname
->st
= fsp
->fsp_name
->st
;
3978 return NT_STATUS_OK
;
3981 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3984 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3986 * The close_file below will close
3991 close_file(req
, fsp
, ERROR_CLOSE
);
3994 if (base_fsp
!= NULL
) {
3995 close_file(req
, base_fsp
, ERROR_CLOSE
);
4002 * Calculate the full path name given a relative fid.
4004 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
4005 struct smb_request
*req
,
4006 uint16_t root_dir_fid
,
4007 const struct smb_filename
*smb_fname
,
4008 struct smb_filename
**smb_fname_out
)
4010 files_struct
*dir_fsp
;
4011 char *parent_fname
= NULL
;
4012 char *new_base_name
= NULL
;
4015 if (root_dir_fid
== 0 || !smb_fname
) {
4016 status
= NT_STATUS_INTERNAL_ERROR
;
4020 dir_fsp
= file_fsp(req
, root_dir_fid
);
4022 if (dir_fsp
== NULL
) {
4023 status
= NT_STATUS_INVALID_HANDLE
;
4027 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
4028 status
= NT_STATUS_INVALID_HANDLE
;
4032 if (!dir_fsp
->is_directory
) {
4035 * Check to see if this is a mac fork of some kind.
4038 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
4039 is_ntfs_stream_smb_fname(smb_fname
)) {
4040 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
4045 we need to handle the case when we get a
4046 relative open relative to a file and the
4047 pathname is blank - this is a reopen!
4048 (hint from demyn plantenberg)
4051 status
= NT_STATUS_INVALID_HANDLE
;
4055 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
4057 * We're at the toplevel dir, the final file name
4058 * must not contain ./, as this is filtered out
4059 * normally by srvstr_get_path and unix_convert
4060 * explicitly rejects paths containing ./.
4062 parent_fname
= talloc_strdup(talloc_tos(), "");
4063 if (parent_fname
== NULL
) {
4064 status
= NT_STATUS_NO_MEMORY
;
4068 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
4071 * Copy in the base directory name.
4074 parent_fname
= talloc_array(talloc_tos(), char,
4076 if (parent_fname
== NULL
) {
4077 status
= NT_STATUS_NO_MEMORY
;
4080 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
4084 * Ensure it ends in a '/'.
4085 * We used TALLOC_SIZE +2 to add space for the '/'.
4089 && (parent_fname
[dir_name_len
-1] != '\\')
4090 && (parent_fname
[dir_name_len
-1] != '/')) {
4091 parent_fname
[dir_name_len
] = '/';
4092 parent_fname
[dir_name_len
+1] = '\0';
4096 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
4097 smb_fname
->base_name
);
4098 if (new_base_name
== NULL
) {
4099 status
= NT_STATUS_NO_MEMORY
;
4103 status
= filename_convert(req
,
4105 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
4110 if (!NT_STATUS_IS_OK(status
)) {
4115 TALLOC_FREE(parent_fname
);
4116 TALLOC_FREE(new_base_name
);
4120 NTSTATUS
create_file_default(connection_struct
*conn
,
4121 struct smb_request
*req
,
4122 uint16_t root_dir_fid
,
4123 struct smb_filename
*smb_fname
,
4124 uint32_t access_mask
,
4125 uint32_t share_access
,
4126 uint32_t create_disposition
,
4127 uint32_t create_options
,
4128 uint32_t file_attributes
,
4129 uint32_t oplock_request
,
4130 uint64_t allocation_size
,
4131 uint32_t private_flags
,
4132 struct security_descriptor
*sd
,
4133 struct ea_list
*ea_list
,
4134 files_struct
**result
,
4137 int info
= FILE_WAS_OPENED
;
4138 files_struct
*fsp
= NULL
;
4140 bool stream_name
= false;
4142 DEBUG(10,("create_file: access_mask = 0x%x "
4143 "file_attributes = 0x%x, share_access = 0x%x, "
4144 "create_disposition = 0x%x create_options = 0x%x "
4145 "oplock_request = 0x%x "
4146 "private_flags = 0x%x "
4147 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4149 (unsigned int)access_mask
,
4150 (unsigned int)file_attributes
,
4151 (unsigned int)share_access
,
4152 (unsigned int)create_disposition
,
4153 (unsigned int)create_options
,
4154 (unsigned int)oplock_request
,
4155 (unsigned int)private_flags
,
4156 (unsigned int)root_dir_fid
,
4157 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4160 * Calculate the filename from the root_dir_if if necessary.
4163 if (root_dir_fid
!= 0) {
4164 struct smb_filename
*smb_fname_out
= NULL
;
4165 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4166 smb_fname
, &smb_fname_out
);
4167 if (!NT_STATUS_IS_OK(status
)) {
4170 smb_fname
= smb_fname_out
;
4174 * Check to see if this is a mac fork of some kind.
4177 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4179 enum FAKE_FILE_TYPE fake_file_type
;
4181 fake_file_type
= is_fake_file(smb_fname
);
4183 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4186 * Here we go! support for changing the disk quotas
4189 * We need to fake up to open this MAGIC QUOTA file
4190 * and return a valid FID.
4192 * w2k close this file directly after openening xp
4193 * also tries a QUERY_FILE_INFO on the file and then
4196 status
= open_fake_file(req
, conn
, req
->vuid
,
4197 fake_file_type
, smb_fname
,
4199 if (!NT_STATUS_IS_OK(status
)) {
4203 ZERO_STRUCT(smb_fname
->st
);
4207 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4208 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4213 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4215 smb_fname
->stream_name
= NULL
;
4216 /* We have to handle this error here. */
4217 if (create_options
& FILE_DIRECTORY_FILE
) {
4218 status
= NT_STATUS_NOT_A_DIRECTORY
;
4221 if (lp_posix_pathnames()) {
4222 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4224 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4227 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4228 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4233 status
= create_file_unixpath(
4234 conn
, req
, smb_fname
, access_mask
, share_access
,
4235 create_disposition
, create_options
, file_attributes
,
4236 oplock_request
, allocation_size
, private_flags
,
4240 if (!NT_STATUS_IS_OK(status
)) {
4245 DEBUG(10, ("create_file: info=%d\n", info
));
4248 if (pinfo
!= NULL
) {
4251 return NT_STATUS_OK
;
4254 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4257 close_file(req
, fsp
, ERROR_CLOSE
);