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Don't allow asynchronous creates to be canceled in SMB2.
[Samba/gebeck_regimport.git] / source3 / smbd / open.c
blobc2bf8edb7a6b7a45b60f75d80538614c6ed95d6c
1 /*
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
7
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.
12
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.
17
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/>.
20 */
21
22 #include "includes.h"
23 #include "system/filesys.h"
24 #include "printing.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 "auth.h"
32 #include "messages.h"
33
34 extern const struct generic_mapping file_generic_mapping;
35
36 struct deferred_open_record {
37 bool delayed_for_oplocks;
38 bool async_open;
39 struct file_id id;
40 };
41
42 /****************************************************************************
43 If the requester wanted DELETE_ACCESS and was rejected because
44 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
45 overrides this.
46 ****************************************************************************/
47
48 static bool parent_override_delete(connection_struct *conn,
49 const struct smb_filename *smb_fname,
50 uint32_t access_mask,
51 uint32_t rejected_mask)
52 {
53 if ((access_mask & DELETE_ACCESS) &&
54 (rejected_mask & DELETE_ACCESS) &&
55 can_delete_file_in_directory(conn, smb_fname)) {
56 return true;
57 }
58 return false;
59 }
60
61 /****************************************************************************
62 Check if we have open rights.
63 ****************************************************************************/
64
65 NTSTATUS smbd_check_access_rights(struct connection_struct *conn,
66 const struct smb_filename *smb_fname,
67 uint32_t access_mask)
68 {
69 /* Check if we have rights to open. */
70 NTSTATUS status;
71 struct security_descriptor *sd = NULL;
72 uint32_t rejected_share_access;
73 uint32_t rejected_mask = access_mask;
74
75 rejected_share_access = access_mask & ~(conn->share_access);
76
77 if (rejected_share_access) {
78 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
79 "on %s (0x%x)\n",
80 (unsigned int)access_mask,
81 smb_fname_str_dbg(smb_fname),
82 (unsigned int)rejected_share_access ));
83 return NT_STATUS_ACCESS_DENIED;
84 }
85
86 if (get_current_uid(conn) == (uid_t)0) {
87 /* I'm sorry sir, I didn't know you were root... */
88 DEBUG(10,("smbd_check_access_rights: root override "
89 "on %s. Granting 0x%x\n",
90 smb_fname_str_dbg(smb_fname),
91 (unsigned int)access_mask ));
92 return NT_STATUS_OK;
93 }
94
95 if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
96 DEBUG(10,("smbd_check_access_rights: not checking ACL "
97 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
98 smb_fname_str_dbg(smb_fname),
99 (unsigned int)access_mask ));
100 return NT_STATUS_OK;
101 }
102
103 if (access_mask == DELETE_ACCESS &&
104 VALID_STAT(smb_fname->st) &&
105 S_ISLNK(smb_fname->st.st_ex_mode)) {
106 /* We can always delete a symlink. */
107 DEBUG(10,("smbd_check_access_rights: not checking ACL "
108 "on DELETE_ACCESS on symlink %s.\n",
109 smb_fname_str_dbg(smb_fname) ));
110 return NT_STATUS_OK;
111 }
112
113 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
114 (SECINFO_OWNER |
115 SECINFO_GROUP |
116 SECINFO_DACL),&sd);
117
118 if (!NT_STATUS_IS_OK(status)) {
119 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
120 "on %s: %s\n",
121 smb_fname_str_dbg(smb_fname),
122 nt_errstr(status)));
123
124 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
125 goto access_denied;
126 }
127
128 return status;
129 }
130
131 /*
132 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
133 * owner WRITE_DAC and READ_CONTROL.
134 */
135 status = se_access_check(sd,
136 get_current_nttok(conn),
137 (access_mask & ~FILE_READ_ATTRIBUTES),
138 &rejected_mask);
139
140 DEBUG(10,("smbd_check_access_rights: file %s requesting "
141 "0x%x returning 0x%x (%s)\n",
142 smb_fname_str_dbg(smb_fname),
143 (unsigned int)access_mask,
144 (unsigned int)rejected_mask,
145 nt_errstr(status) ));
146
147 if (!NT_STATUS_IS_OK(status)) {
148 if (DEBUGLEVEL >= 10) {
149 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
150 smb_fname_str_dbg(smb_fname) ));
151 NDR_PRINT_DEBUG(security_descriptor, sd);
152 }
153 }
154
155 TALLOC_FREE(sd);
156
157 if (NT_STATUS_IS_OK(status) ||
158 !NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
159 return status;
160 }
161
162 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
163
164 access_denied:
165
166 if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
167 (rejected_mask & FILE_WRITE_ATTRIBUTES) &&
168 !lp_store_dos_attributes(SNUM(conn)) &&
169 (lp_map_readonly(SNUM(conn)) ||
170 lp_map_archive(SNUM(conn)) ||
171 lp_map_hidden(SNUM(conn)) ||
172 lp_map_system(SNUM(conn)))) {
173 rejected_mask &= ~FILE_WRITE_ATTRIBUTES;
174
175 DEBUG(10,("smbd_check_access_rights: "
176 "overrode "
177 "FILE_WRITE_ATTRIBUTES "
178 "on file %s\n",
179 smb_fname_str_dbg(smb_fname)));
180 }
181
182 if (parent_override_delete(conn,
183 smb_fname,
184 access_mask,
185 rejected_mask)) {
186 /* Were we trying to do an open
187 * for delete and didn't get DELETE
188 * access (only) ? Check if the
189 * directory allows DELETE_CHILD.
190 * See here:
191 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
192 * for details. */
193
194 rejected_mask &= ~DELETE_ACCESS;
195
196 DEBUG(10,("smbd_check_access_rights: "
197 "overrode "
198 "DELETE_ACCESS on "
199 "file %s\n",
200 smb_fname_str_dbg(smb_fname)));
201 }
202
203 if (rejected_mask != 0) {
204 return NT_STATUS_ACCESS_DENIED;
205 }
206 return NT_STATUS_OK;
207 }
208
209 static NTSTATUS check_parent_access(struct connection_struct *conn,
210 struct smb_filename *smb_fname,
211 uint32_t access_mask)
212 {
213 NTSTATUS status;
214 char *parent_dir = NULL;
215 struct security_descriptor *parent_sd = NULL;
216 uint32_t access_granted = 0;
217
218 if (!parent_dirname(talloc_tos(),
219 smb_fname->base_name,
220 &parent_dir,
221 NULL)) {
222 return NT_STATUS_NO_MEMORY;
223 }
224
225 if (get_current_uid(conn) == (uid_t)0) {
226 /* I'm sorry sir, I didn't know you were root... */
227 DEBUG(10,("check_parent_access: root override "
228 "on %s. Granting 0x%x\n",
229 smb_fname_str_dbg(smb_fname),
230 (unsigned int)access_mask ));
231 return NT_STATUS_OK;
232 }
233
234 status = SMB_VFS_GET_NT_ACL(conn,
235 parent_dir,
236 SECINFO_DACL,
237 &parent_sd);
238
239 if (!NT_STATUS_IS_OK(status)) {
240 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
241 "%s with error %s\n",
242 parent_dir,
243 nt_errstr(status)));
244 return status;
245 }
246
247 /*
248 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
249 * owner WRITE_DAC and READ_CONTROL.
250 */
251 status = se_access_check(parent_sd,
252 get_current_nttok(conn),
253 (access_mask & ~FILE_READ_ATTRIBUTES),
254 &access_granted);
255 if(!NT_STATUS_IS_OK(status)) {
256 DEBUG(5,("check_parent_access: access check "
257 "on directory %s for "
258 "path %s for mask 0x%x returned (0x%x) %s\n",
259 parent_dir,
260 smb_fname->base_name,
261 access_mask,
262 access_granted,
263 nt_errstr(status) ));
264 return status;
265 }
266
267 return NT_STATUS_OK;
268 }
269
270 /****************************************************************************
271 fd support routines - attempt to do a dos_open.
272 ****************************************************************************/
273
274 static NTSTATUS fd_open(struct connection_struct *conn,
275 files_struct *fsp,
276 int flags,
277 mode_t mode)
278 {
279 struct smb_filename *smb_fname = fsp->fsp_name;
280 NTSTATUS status = NT_STATUS_OK;
281
282 #ifdef O_NOFOLLOW
283 /*
284 * Never follow symlinks on a POSIX client. The
285 * client should be doing this.
286 */
287
288 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
289 flags |= O_NOFOLLOW;
290 }
291 #endif
292
293 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, mode);
294 if (fsp->fh->fd == -1) {
295 int posix_errno = errno;
296 #ifdef O_NOFOLLOW
297 #if defined(ENOTSUP) && defined(OSF1)
298 /* handle special Tru64 errno */
299 if (errno == ENOTSUP) {
300 posix_errno = ELOOP;
301 }
302 #endif /* ENOTSUP */
303 #ifdef EFTYPE
304 /* fix broken NetBSD errno */
305 if (errno == EFTYPE) {
306 posix_errno = ELOOP;
307 }
308 #endif /* EFTYPE */
309 /* fix broken FreeBSD errno */
310 if (errno == EMLINK) {
311 posix_errno = ELOOP;
312 }
313 #endif /* O_NOFOLLOW */
314 status = map_nt_error_from_unix(posix_errno);
315 if (errno == EMFILE) {
316 static time_t last_warned = 0L;
317
318 if (time((time_t *) NULL) > last_warned) {
319 DEBUG(0,("Too many open files, unable "
320 "to open more! smbd's max "
321 "open files = %d\n",
322 lp_max_open_files()));
323 last_warned = time((time_t *) NULL);
324 }
325 }
326
327 }
328
329 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
330 smb_fname_str_dbg(smb_fname), flags, (int)mode, fsp->fh->fd,
331 (fsp->fh->fd == -1) ? strerror(errno) : "" ));
332
333 return status;
334 }
335
336 /****************************************************************************
337 Close the file associated with a fsp.
338 ****************************************************************************/
339
340 NTSTATUS fd_close(files_struct *fsp)
341 {
342 int ret;
343
344 if (fsp->dptr) {
345 dptr_CloseDir(fsp);
346 }
347 if (fsp->fh->fd == -1) {
348 return NT_STATUS_OK; /* What we used to call a stat open. */
349 }
350 if (fsp->fh->ref_count > 1) {
351 return NT_STATUS_OK; /* Shared handle. Only close last reference. */
352 }
353
354 ret = SMB_VFS_CLOSE(fsp);
355 fsp->fh->fd = -1;
356 if (ret == -1) {
357 return map_nt_error_from_unix(errno);
358 }
359 return NT_STATUS_OK;
360 }
361
362 /****************************************************************************
363 Change the ownership of a file to that of the parent directory.
364 Do this by fd if possible.
365 ****************************************************************************/
366
367 void change_file_owner_to_parent(connection_struct *conn,
368 const char *inherit_from_dir,
369 files_struct *fsp)
370 {
371 struct smb_filename *smb_fname_parent = NULL;
372 NTSTATUS status;
373 int ret;
374
375 status = create_synthetic_smb_fname(talloc_tos(), inherit_from_dir,
376 NULL, NULL, &smb_fname_parent);
377 if (!NT_STATUS_IS_OK(status)) {
378 return;
379 }
380
381 ret = SMB_VFS_STAT(conn, smb_fname_parent);
382 if (ret == -1) {
383 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
384 "directory %s. Error was %s\n",
385 smb_fname_str_dbg(smb_fname_parent),
386 strerror(errno)));
387 TALLOC_FREE(smb_fname_parent);
388 return;
389 }
390
391 if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
392 /* Already this uid - no need to change. */
393 DEBUG(10,("change_file_owner_to_parent: file %s "
394 "is already owned by uid %d\n",
395 fsp_str_dbg(fsp),
396 (int)fsp->fsp_name->st.st_ex_uid ));
397 TALLOC_FREE(smb_fname_parent);
398 return;
399 }
400
401 become_root();
402 ret = SMB_VFS_FCHOWN(fsp, smb_fname_parent->st.st_ex_uid, (gid_t)-1);
403 unbecome_root();
404 if (ret == -1) {
405 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
406 "file %s to parent directory uid %u. Error "
407 "was %s\n", fsp_str_dbg(fsp),
408 (unsigned int)smb_fname_parent->st.st_ex_uid,
409 strerror(errno) ));
410 } else {
411 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
412 "parent directory uid %u.\n", fsp_str_dbg(fsp),
413 (unsigned int)smb_fname_parent->st.st_ex_uid));
414 /* Ensure the uid entry is updated. */
415 fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
416 }
417
418 TALLOC_FREE(smb_fname_parent);
419 }
420
421 NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
422 const char *inherit_from_dir,
423 const char *fname,
424 SMB_STRUCT_STAT *psbuf)
425 {
426 struct smb_filename *smb_fname_parent = NULL;
427 struct smb_filename *smb_fname_cwd = NULL;
428 char *saved_dir = NULL;
429 TALLOC_CTX *ctx = talloc_tos();
430 NTSTATUS status = NT_STATUS_OK;
431 int ret;
432
433 status = create_synthetic_smb_fname(ctx, inherit_from_dir, NULL, NULL,
434 &smb_fname_parent);
435 if (!NT_STATUS_IS_OK(status)) {
436 return status;
437 }
438
439 ret = SMB_VFS_STAT(conn, smb_fname_parent);
440 if (ret == -1) {
441 status = map_nt_error_from_unix(errno);
442 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
443 "directory %s. Error was %s\n",
444 smb_fname_str_dbg(smb_fname_parent),
445 strerror(errno)));
446 goto out;
447 }
448
449 /* We've already done an lstat into psbuf, and we know it's a
450 directory. If we can cd into the directory and the dev/ino
451 are the same then we can safely chown without races as
452 we're locking the directory in place by being in it. This
453 should work on any UNIX (thanks tridge :-). JRA.
454 */
455
456 saved_dir = vfs_GetWd(ctx,conn);
457 if (!saved_dir) {
458 status = map_nt_error_from_unix(errno);
459 DEBUG(0,("change_dir_owner_to_parent: failed to get "
460 "current working directory. Error was %s\n",
461 strerror(errno)));
462 goto out;
463 }
464
465 /* Chdir into the new path. */
466 if (vfs_ChDir(conn, fname) == -1) {
467 status = map_nt_error_from_unix(errno);
468 DEBUG(0,("change_dir_owner_to_parent: failed to change "
469 "current working directory to %s. Error "
470 "was %s\n", fname, strerror(errno) ));
471 goto chdir;
472 }
473
474 status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
475 &smb_fname_cwd);
476 if (!NT_STATUS_IS_OK(status)) {
477 return status;
478 }
479
480 ret = SMB_VFS_STAT(conn, smb_fname_cwd);
481 if (ret == -1) {
482 status = map_nt_error_from_unix(errno);
483 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
484 "directory '.' (%s) Error was %s\n",
485 fname, strerror(errno)));
486 goto chdir;
487 }
488
489 /* Ensure we're pointing at the same place. */
490 if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
491 smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
492 DEBUG(0,("change_dir_owner_to_parent: "
493 "device/inode on directory %s changed. "
494 "Refusing to chown !\n", fname ));
495 status = NT_STATUS_ACCESS_DENIED;
496 goto chdir;
497 }
498
499 if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
500 /* Already this uid - no need to change. */
501 DEBUG(10,("change_dir_owner_to_parent: directory %s "
502 "is already owned by uid %d\n",
503 fname,
504 (int)smb_fname_cwd->st.st_ex_uid ));
505 status = NT_STATUS_OK;
506 goto chdir;
507 }
508
509 become_root();
510 ret = SMB_VFS_LCHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
511 (gid_t)-1);
512 unbecome_root();
513 if (ret == -1) {
514 status = map_nt_error_from_unix(errno);
515 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
516 "directory %s to parent directory uid %u. "
517 "Error was %s\n", fname,
518 (unsigned int)smb_fname_parent->st.st_ex_uid,
519 strerror(errno) ));
520 } else {
521 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
522 "directory %s to parent directory uid %u.\n",
523 fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
524 /* Ensure the uid entry is updated. */
525 psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
526 }
527
528 chdir:
529 vfs_ChDir(conn,saved_dir);
530 out:
531 TALLOC_FREE(smb_fname_parent);
532 TALLOC_FREE(smb_fname_cwd);
533 return status;
534 }
535
536 /****************************************************************************
537 Open a file.
538 ****************************************************************************/
539
540 static NTSTATUS open_file(files_struct *fsp,
541 connection_struct *conn,
542 struct smb_request *req,
543 const char *parent_dir,
544 int flags,
545 mode_t unx_mode,
546 uint32 access_mask, /* client requested access mask. */
547 uint32 open_access_mask) /* what we're actually using in the open. */
548 {
549 struct smb_filename *smb_fname = fsp->fsp_name;
550 NTSTATUS status = NT_STATUS_OK;
551 int accmode = (flags & O_ACCMODE);
552 int local_flags = flags;
553 bool file_existed = VALID_STAT(fsp->fsp_name->st);
554 bool file_created = false;
555
556 fsp->fh->fd = -1;
557 errno = EPERM;
558
559 /* Check permissions */
560
561 /*
562 * This code was changed after seeing a client open request
563 * containing the open mode of (DENY_WRITE/read-only) with
564 * the 'create if not exist' bit set. The previous code
565 * would fail to open the file read only on a read-only share
566 * as it was checking the flags parameter directly against O_RDONLY,
567 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
568 * JRA.
569 */
570
571 if (!CAN_WRITE(conn)) {
572 /* It's a read-only share - fail if we wanted to write. */
573 if(accmode != O_RDONLY || (flags & O_TRUNC) || (flags & O_APPEND)) {
574 DEBUG(3,("Permission denied opening %s\n",
575 smb_fname_str_dbg(smb_fname)));
576 return NT_STATUS_ACCESS_DENIED;
577 } else if(flags & O_CREAT) {
578 /* We don't want to write - but we must make sure that
579 O_CREAT doesn't create the file if we have write
580 access into the directory.
581 */
582 flags &= ~(O_CREAT|O_EXCL);
583 local_flags &= ~(O_CREAT|O_EXCL);
584 }
585 }
586
587 /*
588 * This little piece of insanity is inspired by the
589 * fact that an NT client can open a file for O_RDONLY,
590 * but set the create disposition to FILE_EXISTS_TRUNCATE.
591 * If the client *can* write to the file, then it expects to
592 * truncate the file, even though it is opening for readonly.
593 * Quicken uses this stupid trick in backup file creation...
594 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
595 * for helping track this one down. It didn't bite us in 2.0.x
596 * as we always opened files read-write in that release. JRA.
597 */
598
599 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
600 DEBUG(10,("open_file: truncate requested on read-only open "
601 "for file %s\n", smb_fname_str_dbg(smb_fname)));
602 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
603 }
604
605 if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
606 (!file_existed && (local_flags & O_CREAT)) ||
607 ((local_flags & O_TRUNC) == O_TRUNC) ) {
608 const char *wild;
609
610 /*
611 * We can't actually truncate here as the file may be locked.
612 * open_file_ntcreate will take care of the truncate later. JRA.
613 */
614
615 local_flags &= ~O_TRUNC;
616
617 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
618 /*
619 * We would block on opening a FIFO with no one else on the
620 * other end. Do what we used to do and add O_NONBLOCK to the
621 * open flags. JRA.
622 */
623
624 if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
625 local_flags |= O_NONBLOCK;
626 }
627 #endif
628
629 /* Don't create files with Microsoft wildcard characters. */
630 if (fsp->base_fsp) {
631 /*
632 * wildcard characters are allowed in stream names
633 * only test the basefilename
634 */
635 wild = fsp->base_fsp->fsp_name->base_name;
636 } else {
637 wild = smb_fname->base_name;
638 }
639 if ((local_flags & O_CREAT) && !file_existed &&
640 ms_has_wild(wild)) {
641 return NT_STATUS_OBJECT_NAME_INVALID;
642 }
643
644 /* Can we access this file ? */
645 if (!fsp->base_fsp) {
646 /* Only do this check on non-stream open. */
647 if (file_existed) {
648 status = smbd_check_access_rights(conn,
649 smb_fname,
650 access_mask);
651 } else if (local_flags & O_CREAT){
652 status = check_parent_access(conn,
653 smb_fname,
654 SEC_DIR_ADD_FILE);
655 } else {
656 /* File didn't exist and no O_CREAT. */
657 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
658 }
659 if (!NT_STATUS_IS_OK(status)) {
660 DEBUG(10,("open_file: "
661 "%s on file "
662 "%s returned %s\n",
663 file_existed ?
664 "smbd_check_access_rights" :
665 "check_parent_access",
666 smb_fname_str_dbg(smb_fname),
667 nt_errstr(status) ));
668 return status;
669 }
670 }
671
672 /* Actually do the open */
673 status = fd_open(conn, fsp, local_flags, unx_mode);
674 if (!NT_STATUS_IS_OK(status)) {
675 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
676 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
677 nt_errstr(status),local_flags,flags));
678 return status;
679 }
680
681 if ((local_flags & O_CREAT) && !file_existed) {
682 file_created = true;
683 }
684
685 } else {
686 fsp->fh->fd = -1; /* What we used to call a stat open. */
687 if (!file_existed) {
688 /* File must exist for a stat open. */
689 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
690 }
691
692 status = smbd_check_access_rights(conn,
693 smb_fname,
694 access_mask);
695
696 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
697 fsp->posix_open &&
698 S_ISLNK(smb_fname->st.st_ex_mode)) {
699 /* This is a POSIX stat open for delete
700 * or rename on a symlink that points
701 * nowhere. Allow. */
702 DEBUG(10,("open_file: allowing POSIX "
703 "open on bad symlink %s\n",
704 smb_fname_str_dbg(smb_fname)));
705 status = NT_STATUS_OK;
706 }
707
708 if (!NT_STATUS_IS_OK(status)) {
709 DEBUG(10,("open_file: "
710 "smbd_check_access_rights on file "
711 "%s returned %s\n",
712 smb_fname_str_dbg(smb_fname),
713 nt_errstr(status) ));
714 return status;
715 }
716 }
717
718 if (!file_existed) {
719 int ret;
720
721 if (fsp->fh->fd == -1) {
722 ret = SMB_VFS_STAT(conn, smb_fname);
723 } else {
724 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
725 /* If we have an fd, this stat should succeed. */
726 if (ret == -1) {
727 DEBUG(0,("Error doing fstat on open file %s "
728 "(%s)\n",
729 smb_fname_str_dbg(smb_fname),
730 strerror(errno) ));
731 }
732 }
733
734 /* For a non-io open, this stat failing means file not found. JRA */
735 if (ret == -1) {
736 status = map_nt_error_from_unix(errno);
737 fd_close(fsp);
738 return status;
739 }
740
741 if (file_created) {
742 bool need_re_stat = false;
743 /* Do all inheritance work after we've
744 done a successful stat call and filled
745 in the stat struct in fsp->fsp_name. */
746
747 /* Inherit the ACL if required */
748 if (lp_inherit_perms(SNUM(conn))) {
749 inherit_access_posix_acl(conn, parent_dir,
750 smb_fname->base_name,
751 unx_mode);
752 need_re_stat = true;
753 }
754
755 /* Change the owner if required. */
756 if (lp_inherit_owner(SNUM(conn))) {
757 change_file_owner_to_parent(conn, parent_dir,
758 fsp);
759 need_re_stat = true;
760 }
761
762 if (need_re_stat) {
763 if (fsp->fh->fd == -1) {
764 ret = SMB_VFS_STAT(conn, smb_fname);
765 } else {
766 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
767 /* If we have an fd, this stat should succeed. */
768 if (ret == -1) {
769 DEBUG(0,("Error doing fstat on open file %s "
770 "(%s)\n",
771 smb_fname_str_dbg(smb_fname),
772 strerror(errno) ));
773 }
774 }
775 }
776
777 notify_fname(conn, NOTIFY_ACTION_ADDED,
778 FILE_NOTIFY_CHANGE_FILE_NAME,
779 smb_fname->base_name);
780 }
781 }
782
783 /*
784 * POSIX allows read-only opens of directories. We don't
785 * want to do this (we use a different code path for this)
786 * so catch a directory open and return an EISDIR. JRA.
787 */
788
789 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
790 fd_close(fsp);
791 errno = EISDIR;
792 return NT_STATUS_FILE_IS_A_DIRECTORY;
793 }
794
795 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
796 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
797 fsp->file_pid = req ? req->smbpid : 0;
798 fsp->can_lock = True;
799 fsp->can_read = ((access_mask & FILE_READ_DATA) != 0);
800 fsp->can_write =
801 CAN_WRITE(conn) &&
802 ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0);
803 fsp->print_file = NULL;
804 fsp->modified = False;
805 fsp->sent_oplock_break = NO_BREAK_SENT;
806 fsp->is_directory = False;
807 if (conn->aio_write_behind_list &&
808 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
809 conn->case_sensitive)) {
810 fsp->aio_write_behind = True;
811 }
812
813 fsp->wcp = NULL; /* Write cache pointer. */
814
815 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
816 conn->session_info->unix_info->unix_name,
817 smb_fname_str_dbg(smb_fname),
818 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
819 conn->num_files_open));
820
821 errno = 0;
822 return NT_STATUS_OK;
823 }
824
825 /****************************************************************************
826 Check if we can open a file with a share mode.
827 Returns True if conflict, False if not.
828 ****************************************************************************/
829
830 static bool share_conflict(struct share_mode_entry *entry,
831 uint32 access_mask,
832 uint32 share_access)
833 {
834 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
835 "entry->share_access = 0x%x, "
836 "entry->private_options = 0x%x\n",
837 (unsigned int)entry->access_mask,
838 (unsigned int)entry->share_access,
839 (unsigned int)entry->private_options));
840
841 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
842 (unsigned int)access_mask, (unsigned int)share_access));
843
844 if ((entry->access_mask & (FILE_WRITE_DATA|
845 FILE_APPEND_DATA|
846 FILE_READ_DATA|
847 FILE_EXECUTE|
848 DELETE_ACCESS)) == 0) {
849 DEBUG(10,("share_conflict: No conflict due to "
850 "entry->access_mask = 0x%x\n",
851 (unsigned int)entry->access_mask ));
852 return False;
853 }
854
855 if ((access_mask & (FILE_WRITE_DATA|
856 FILE_APPEND_DATA|
857 FILE_READ_DATA|
858 FILE_EXECUTE|
859 DELETE_ACCESS)) == 0) {
860 DEBUG(10,("share_conflict: No conflict due to "
861 "access_mask = 0x%x\n",
862 (unsigned int)access_mask ));
863 return False;
864 }
865
866 #if 1 /* JRA TEST - Superdebug. */
867 #define CHECK_MASK(num, am, right, sa, share) \
868 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
869 (unsigned int)(num), (unsigned int)(am), \
870 (unsigned int)(right), (unsigned int)(am)&(right) )); \
871 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
872 (unsigned int)(num), (unsigned int)(sa), \
873 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
874 if (((am) & (right)) && !((sa) & (share))) { \
875 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
876 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
877 (unsigned int)(share) )); \
878 return True; \
879 }
880 #else
881 #define CHECK_MASK(num, am, right, sa, share) \
882 if (((am) & (right)) && !((sa) & (share))) { \
883 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
884 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
885 (unsigned int)(share) )); \
886 return True; \
887 }
888 #endif
889
890 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
891 share_access, FILE_SHARE_WRITE);
892 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
893 entry->share_access, FILE_SHARE_WRITE);
894
895 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
896 share_access, FILE_SHARE_READ);
897 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
898 entry->share_access, FILE_SHARE_READ);
899
900 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
901 share_access, FILE_SHARE_DELETE);
902 CHECK_MASK(6, access_mask, DELETE_ACCESS,
903 entry->share_access, FILE_SHARE_DELETE);
904
905 DEBUG(10,("share_conflict: No conflict.\n"));
906 return False;
907 }
908
909 #if defined(DEVELOPER)
910 static void validate_my_share_entries(struct smbd_server_connection *sconn,
911 int num,
912 struct share_mode_entry *share_entry)
913 {
914 struct server_id self = messaging_server_id(sconn->msg_ctx);
915 files_struct *fsp;
916
917 if (!serverid_equal(&self, &share_entry->pid)) {
918 return;
919 }
920
921 if (is_deferred_open_entry(share_entry) &&
922 !open_was_deferred(sconn, share_entry->op_mid)) {
923 char *str = talloc_asprintf(talloc_tos(),
924 "Got a deferred entry without a request: "
925 "PANIC: %s\n",
926 share_mode_str(talloc_tos(), num, share_entry));
927 smb_panic(str);
928 }
929
930 if (!is_valid_share_mode_entry(share_entry)) {
931 return;
932 }
933
934 fsp = file_find_dif(sconn, share_entry->id,
935 share_entry->share_file_id);
936 if (!fsp) {
937 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
938 share_mode_str(talloc_tos(), num, share_entry) ));
939 smb_panic("validate_my_share_entries: Cannot match a "
940 "share entry with an open file\n");
941 }
942
943 if (is_deferred_open_entry(share_entry)) {
944 goto panic;
945 }
946
947 if ((share_entry->op_type == NO_OPLOCK) &&
948 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
949 /* Someone has already written to it, but I haven't yet
950 * noticed */
951 return;
952 }
953
954 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
955 goto panic;
956 }
957
958 return;
959
960 panic:
961 {
962 char *str;
963 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
964 share_mode_str(talloc_tos(), num, share_entry) ));
965 str = talloc_asprintf(talloc_tos(),
966 "validate_my_share_entries: "
967 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
968 fsp->fsp_name->base_name,
969 (unsigned int)fsp->oplock_type,
970 (unsigned int)share_entry->op_type );
971 smb_panic(str);
972 }
973 }
974 #endif
975
976 bool is_stat_open(uint32 access_mask)
977 {
978 return (access_mask &&
979 ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
980 FILE_WRITE_ATTRIBUTES))==0) &&
981 ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
982 FILE_WRITE_ATTRIBUTES)) != 0));
983 }
984
985 /****************************************************************************
986 Deal with share modes
987 Invarient: Share mode must be locked on entry and exit.
988 Returns -1 on error, or number of share modes on success (may be zero).
989 ****************************************************************************/
990
991 static NTSTATUS open_mode_check(connection_struct *conn,
992 struct share_mode_lock *lck,
993 uint32_t name_hash,
994 uint32 access_mask,
995 uint32 share_access,
996 uint32 create_options,
997 bool *file_existed)
998 {
999 int i;
1000
1001 if(lck->data->num_share_modes == 0) {
1002 return NT_STATUS_OK;
1003 }
1004
1005 /* A delete on close prohibits everything */
1006
1007 if (is_delete_on_close_set(lck, name_hash)) {
1008 /*
1009 * Check the delete on close token
1010 * is valid. It could have been left
1011 * after a server crash.
1012 */
1013 for(i = 0; i < lck->data->num_share_modes; i++) {
1014 if (!share_mode_stale_pid(lck->data, i)) {
1015
1016 *file_existed = true;
1017
1018 return NT_STATUS_DELETE_PENDING;
1019 }
1020 }
1021 return NT_STATUS_OK;
1022 }
1023
1024 if (is_stat_open(access_mask)) {
1025 /* Stat open that doesn't trigger oplock breaks or share mode
1026 * checks... ! JRA. */
1027 return NT_STATUS_OK;
1028 }
1029
1030 /*
1031 * Check if the share modes will give us access.
1032 */
1033
1034 #if defined(DEVELOPER)
1035 for(i = 0; i < lck->data->num_share_modes; i++) {
1036 validate_my_share_entries(conn->sconn, i,
1037 &lck->data->share_modes[i]);
1038 }
1039 #endif
1040
1041 if (!lp_share_modes(SNUM(conn))) {
1042 return NT_STATUS_OK;
1043 }
1044
1045 /* Now we check the share modes, after any oplock breaks. */
1046 for(i = 0; i < lck->data->num_share_modes; i++) {
1047
1048 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1049 continue;
1050 }
1051
1052 /* someone else has a share lock on it, check to see if we can
1053 * too */
1054 if (share_conflict(&lck->data->share_modes[i],
1055 access_mask, share_access)) {
1056
1057 if (share_mode_stale_pid(lck->data, i)) {
1058 continue;
1059 }
1060
1061 *file_existed = true;
1062
1063 return NT_STATUS_SHARING_VIOLATION;
1064 }
1065 }
1066
1067 if (lck->data->num_share_modes != 0) {
1068 *file_existed = true;
1069 }
1070
1071 return NT_STATUS_OK;
1072 }
1073
1074 static bool is_delete_request(files_struct *fsp) {
1075 return ((fsp->access_mask == DELETE_ACCESS) &&
1076 (fsp->oplock_type == NO_OPLOCK));
1077 }
1078
1079 /*
1080 * Send a break message to the oplock holder and delay the open for
1081 * our client.
1082 */
1083
1084 static NTSTATUS send_break_message(files_struct *fsp,
1085 struct share_mode_entry *exclusive,
1086 uint64_t mid,
1087 int oplock_request)
1088 {
1089 NTSTATUS status;
1090 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1091
1092 DEBUG(10, ("Sending break request to PID %s\n",
1093 procid_str_static(&exclusive->pid)));
1094 exclusive->op_mid = mid;
1095
1096 /* Create the message. */
1097 share_mode_entry_to_message(msg, exclusive);
1098
1099 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1100 don't want this set in the share mode struct pointed to by lck. */
1101
1102 if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
1103 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,
1104 exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
1105 }
1106
1107 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1108 MSG_SMB_BREAK_REQUEST,
1109 (uint8 *)msg,
1110 MSG_SMB_SHARE_MODE_ENTRY_SIZE);
1111 if (!NT_STATUS_IS_OK(status)) {
1112 DEBUG(3, ("Could not send oplock break message: %s\n",
1113 nt_errstr(status)));
1114 }
1115
1116 return status;
1117 }
1118
1119 /*
1120 * Return share_mode_entry pointers for :
1121 * 1). Batch oplock entry.
1122 * 2). Batch or exclusive oplock entry (may be identical to #1).
1123 * bool have_level2_oplock
1124 * bool have_no_oplock.
1125 * Do internal consistency checks on the share mode for a file.
1126 */
1127
1128 static void find_oplock_types(files_struct *fsp,
1129 int oplock_request,
1130 const struct share_mode_lock *lck,
1131 struct share_mode_entry **pp_batch,
1132 struct share_mode_entry **pp_ex_or_batch,
1133 bool *got_level2,
1134 bool *got_no_oplock)
1135 {
1136 int i;
1137
1138 *pp_batch = NULL;
1139 *pp_ex_or_batch = NULL;
1140 *got_level2 = false;
1141 *got_no_oplock = false;
1142
1143 /* Ignore stat or internal opens, as is done in
1144 delay_for_batch_oplocks() and
1145 delay_for_exclusive_oplocks().
1146 */
1147 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1148 return;
1149 }
1150
1151 for (i=0; i<lck->data->num_share_modes; i++) {
1152 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1153 continue;
1154 }
1155
1156 if (lck->data->share_modes[i].op_type == NO_OPLOCK &&
1157 is_stat_open(lck->data->share_modes[i].access_mask)) {
1158 /* We ignore stat opens in the table - they
1159 always have NO_OPLOCK and never get or
1160 cause breaks. JRA. */
1161 continue;
1162 }
1163
1164 if (BATCH_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1165 /* batch - can only be one. */
1166 if (share_mode_stale_pid(lck->data, i)) {
1167 DEBUG(10, ("Found stale batch oplock\n"));
1168 continue;
1169 }
1170 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1171 smb_panic("Bad batch oplock entry.");
1172 }
1173 *pp_batch = &lck->data->share_modes[i];
1174 }
1175
1176 if (EXCLUSIVE_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1177 if (share_mode_stale_pid(lck->data, i)) {
1178 DEBUG(10, ("Found stale duplicate oplock\n"));
1179 continue;
1180 }
1181 /* Exclusive or batch - can only be one. */
1182 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1183 smb_panic("Bad exclusive or batch oplock entry.");
1184 }
1185 *pp_ex_or_batch = &lck->data->share_modes[i];
1186 }
1187
1188 if (LEVEL_II_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1189 if (*pp_batch || *pp_ex_or_batch) {
1190 if (share_mode_stale_pid(lck->data, i)) {
1191 DEBUG(10, ("Found stale LevelII "
1192 "oplock\n"));
1193 continue;
1194 }
1195 smb_panic("Bad levelII oplock entry.");
1196 }
1197 *got_level2 = true;
1198 }
1199
1200 if (lck->data->share_modes[i].op_type == NO_OPLOCK) {
1201 if (*pp_batch || *pp_ex_or_batch) {
1202 if (share_mode_stale_pid(lck->data, i)) {
1203 DEBUG(10, ("Found stale NO_OPLOCK "
1204 "entry\n"));
1205 continue;
1206 }
1207 smb_panic("Bad no oplock entry.");
1208 }
1209 *got_no_oplock = true;
1210 }
1211 }
1212 }
1213
1214 static bool delay_for_batch_oplocks(files_struct *fsp,
1215 uint64_t mid,
1216 int oplock_request,
1217 struct share_mode_entry *batch_entry)
1218 {
1219 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1220 return false;
1221 }
1222 if (batch_entry == NULL) {
1223 return false;
1224 }
1225
1226 /* Found a batch oplock */
1227 send_break_message(fsp, batch_entry, mid, oplock_request);
1228 return true;
1229 }
1230
1231 static bool delay_for_exclusive_oplocks(files_struct *fsp,
1232 uint64_t mid,
1233 int oplock_request,
1234 struct share_mode_entry *ex_entry)
1235 {
1236 bool delay_it;
1237
1238 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1239 return false;
1240 }
1241 if (ex_entry == NULL) {
1242 return false;
1243 }
1244
1245 /* Found an exclusive or batch oplock */
1246
1247 delay_it = is_delete_request(fsp) ?
1248 BATCH_OPLOCK_TYPE(ex_entry->op_type) : true;
1249
1250 if (!delay_it) {
1251 return false;
1252 }
1253
1254 send_break_message(fsp, ex_entry, mid, oplock_request);
1255 return true;
1256 }
1257
1258 static bool file_has_brlocks(files_struct *fsp)
1259 {
1260 struct byte_range_lock *br_lck;
1261
1262 br_lck = brl_get_locks_readonly(fsp);
1263 if (!br_lck)
1264 return false;
1265
1266 return br_lck->num_locks > 0 ? true : false;
1267 }
1268
1269 static void grant_fsp_oplock_type(files_struct *fsp,
1270 int oplock_request,
1271 bool got_level2_oplock,
1272 bool got_a_none_oplock)
1273 {
1274 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1275 lp_level2_oplocks(SNUM(fsp->conn));
1276
1277 /* Start by granting what the client asked for,
1278 but ensure no SAMBA_PRIVATE bits can be set. */
1279 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1280
1281 if (oplock_request & INTERNAL_OPEN_ONLY) {
1282 /* No oplocks on internal open. */
1283 fsp->oplock_type = NO_OPLOCK;
1284 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1285 fsp->oplock_type, fsp_str_dbg(fsp)));
1286 return;
1287 }
1288
1289 if (lp_locking(fsp->conn->params) && file_has_brlocks(fsp)) {
1290 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1291 fsp_str_dbg(fsp)));
1292 fsp->oplock_type = NO_OPLOCK;
1293 }
1294
1295 if (is_stat_open(fsp->access_mask)) {
1296 /* Leave the value already set. */
1297 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1298 fsp->oplock_type, fsp_str_dbg(fsp)));
1299 return;
1300 }
1301
1302 /*
1303 * Match what was requested (fsp->oplock_type) with
1304 * what was found in the existing share modes.
1305 */
1306
1307 if (got_a_none_oplock) {
1308 fsp->oplock_type = NO_OPLOCK;
1309 } else if (got_level2_oplock) {
1310 if (fsp->oplock_type == NO_OPLOCK ||
1311 fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
1312 /* Store a level2 oplock, but don't tell the client */
1313 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1314 } else {
1315 fsp->oplock_type = LEVEL_II_OPLOCK;
1316 }
1317 } else {
1318 /* All share_mode_entries are placeholders or deferred.
1319 * Silently upgrade to fake levelII if the client didn't
1320 * ask for an oplock. */
1321 if (fsp->oplock_type == NO_OPLOCK) {
1322 /* Store a level2 oplock, but don't tell the client */
1323 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1324 }
1325 }
1326
1327 /*
1328 * Don't grant level2 to clients that don't want them
1329 * or if we've turned them off.
1330 */
1331 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1332 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1333 }
1334
1335 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1336 fsp->oplock_type, fsp_str_dbg(fsp)));
1337 }
1338
1339 bool request_timed_out(struct timeval request_time,
1340 struct timeval timeout)
1341 {
1342 struct timeval now, end_time;
1343 GetTimeOfDay(&now);
1344 end_time = timeval_sum(&request_time, &timeout);
1345 return (timeval_compare(&end_time, &now) < 0);
1346 }
1347
1348 /****************************************************************************
1349 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1350 ****************************************************************************/
1351
1352 static void defer_open(struct share_mode_lock *lck,
1353 struct timeval request_time,
1354 struct timeval timeout,
1355 struct smb_request *req,
1356 struct deferred_open_record *state)
1357 {
1358 struct server_id self = messaging_server_id(req->sconn->msg_ctx);
1359
1360 /* Paranoia check */
1361
1362 if (lck) {
1363 int i;
1364
1365 for (i=0; i<lck->data->num_share_modes; i++) {
1366 struct share_mode_entry *e = &lck->data->share_modes[i];
1367
1368 if (is_deferred_open_entry(e) &&
1369 serverid_equal(&self, &e->pid) &&
1370 (e->op_mid == req->mid)) {
1371 DEBUG(0, ("Trying to defer an already deferred "
1372 "request: mid=%llu, exiting\n",
1373 (unsigned long long)req->mid));
1374 exit_server("attempt to defer a deferred request");
1375 }
1376 }
1377 }
1378
1379 /* End paranoia check */
1380
1381 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1382 "open entry for mid %llu\n",
1383 (unsigned int)request_time.tv_sec,
1384 (unsigned int)request_time.tv_usec,
1385 (unsigned long long)req->mid));
1386
1387 if (!push_deferred_open_message_smb(req, request_time, timeout,
1388 state->id, (char *)state, sizeof(*state))) {
1389 exit_server("push_deferred_open_message_smb failed");
1390 }
1391 if (lck) {
1392 add_deferred_open(lck, req->mid, request_time, self, state->id);
1393 }
1394 }
1395
1396
1397 /****************************************************************************
1398 On overwrite open ensure that the attributes match.
1399 ****************************************************************************/
1400
1401 bool open_match_attributes(connection_struct *conn,
1402 uint32 old_dos_attr,
1403 uint32 new_dos_attr,
1404 mode_t existing_unx_mode,
1405 mode_t new_unx_mode,
1406 mode_t *returned_unx_mode)
1407 {
1408 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1409
1410 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1411 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1412
1413 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1414 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1415 *returned_unx_mode = new_unx_mode;
1416 } else {
1417 *returned_unx_mode = (mode_t)0;
1418 }
1419
1420 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1421 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1422 "returned_unx_mode = 0%o\n",
1423 (unsigned int)old_dos_attr,
1424 (unsigned int)existing_unx_mode,
1425 (unsigned int)new_dos_attr,
1426 (unsigned int)*returned_unx_mode ));
1427
1428 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1429 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1430 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1431 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1432 return False;
1433 }
1434 }
1435 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1436 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1437 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1438 return False;
1439 }
1440 }
1441 return True;
1442 }
1443
1444 /****************************************************************************
1445 Special FCB or DOS processing in the case of a sharing violation.
1446 Try and find a duplicated file handle.
1447 ****************************************************************************/
1448
1449 static NTSTATUS fcb_or_dos_open(struct smb_request *req,
1450 connection_struct *conn,
1451 files_struct *fsp_to_dup_into,
1452 const struct smb_filename *smb_fname,
1453 struct file_id id,
1454 uint16 file_pid,
1455 uint64_t vuid,
1456 uint32 access_mask,
1457 uint32 share_access,
1458 uint32 create_options)
1459 {
1460 files_struct *fsp;
1461
1462 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1463 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1464
1465 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1466 fsp = file_find_di_next(fsp)) {
1467
1468 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1469 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1470 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1471 fsp->fh->fd, (unsigned long long)fsp->vuid,
1472 (unsigned int)fsp->file_pid,
1473 (unsigned int)fsp->fh->private_options,
1474 (unsigned int)fsp->access_mask ));
1475
1476 if (fsp->fh->fd != -1 &&
1477 fsp->vuid == vuid &&
1478 fsp->file_pid == file_pid &&
1479 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1480 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1481 (fsp->access_mask & FILE_WRITE_DATA) &&
1482 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1483 strequal(fsp->fsp_name->stream_name,
1484 smb_fname->stream_name)) {
1485 DEBUG(10,("fcb_or_dos_open: file match\n"));
1486 break;
1487 }
1488 }
1489
1490 if (!fsp) {
1491 return NT_STATUS_NOT_FOUND;
1492 }
1493
1494 /* quite an insane set of semantics ... */
1495 if (is_executable(smb_fname->base_name) &&
1496 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1497 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1498 return NT_STATUS_INVALID_PARAMETER;
1499 }
1500
1501 /* We need to duplicate this fsp. */
1502 return dup_file_fsp(req, fsp, access_mask, share_access,
1503 create_options, fsp_to_dup_into);
1504 }
1505
1506 static void schedule_defer_open(struct share_mode_lock *lck,
1507 struct timeval request_time,
1508 struct smb_request *req)
1509 {
1510 struct deferred_open_record state;
1511
1512 /* This is a relative time, added to the absolute
1513 request_time value to get the absolute timeout time.
1514 Note that if this is the second or greater time we enter
1515 this codepath for this particular request mid then
1516 request_time is left as the absolute time of the *first*
1517 time this request mid was processed. This is what allows
1518 the request to eventually time out. */
1519
1520 struct timeval timeout;
1521
1522 /* Normally the smbd we asked should respond within
1523 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1524 * the client did, give twice the timeout as a safety
1525 * measure here in case the other smbd is stuck
1526 * somewhere else. */
1527
1528 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1529
1530 /* Nothing actually uses state.delayed_for_oplocks
1531 but it's handy to differentiate in debug messages
1532 between a 30 second delay due to oplock break, and
1533 a 1 second delay for share mode conflicts. */
1534
1535 state.delayed_for_oplocks = True;
1536 state.async_open = false;
1537 state.id = lck->data->id;
1538
1539 if (!request_timed_out(request_time, timeout)) {
1540 defer_open(lck, request_time, timeout, req, &state);
1541 }
1542 }
1543
1544 /****************************************************************************
1545 Reschedule an open call that went asynchronous.
1546 ****************************************************************************/
1547
1548 static void schedule_async_open(struct timeval request_time,
1549 struct smb_request *req)
1550 {
1551 struct deferred_open_record state;
1552 struct timeval timeout;
1553
1554 timeout = timeval_set(20, 0);
1555
1556 ZERO_STRUCT(state);
1557 state.delayed_for_oplocks = false;
1558 state.async_open = true;
1559
1560 if (!request_timed_out(request_time, timeout)) {
1561 defer_open(NULL, request_time, timeout, req, &state);
1562 }
1563 }
1564
1565 /****************************************************************************
1566 Work out what access_mask to use from what the client sent us.
1567 ****************************************************************************/
1568
1569 static NTSTATUS smbd_calculate_maximum_allowed_access(
1570 connection_struct *conn,
1571 const struct smb_filename *smb_fname,
1572 uint32_t *p_access_mask)
1573 {
1574 struct security_descriptor *sd;
1575 uint32_t access_granted;
1576 NTSTATUS status;
1577
1578 if (get_current_uid(conn) == (uid_t)0) {
1579 *p_access_mask |= FILE_GENERIC_ALL;
1580 return NT_STATUS_OK;
1581 }
1582
1583 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1584 (SECINFO_OWNER |
1585 SECINFO_GROUP |
1586 SECINFO_DACL),&sd);
1587
1588 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1589 /*
1590 * File did not exist
1591 */
1592 *p_access_mask = FILE_GENERIC_ALL;
1593 return NT_STATUS_OK;
1594 }
1595 if (!NT_STATUS_IS_OK(status)) {
1596 DEBUG(10,("smbd_calculate_access_mask: "
1597 "Could not get acl on file %s: %s\n",
1598 smb_fname_str_dbg(smb_fname),
1599 nt_errstr(status)));
1600 return NT_STATUS_ACCESS_DENIED;
1601 }
1602
1603 /*
1604 * Never test FILE_READ_ATTRIBUTES. se_access_check()
1605 * also takes care of owner WRITE_DAC and READ_CONTROL.
1606 */
1607 status = se_access_check(sd,
1608 get_current_nttok(conn),
1609 (*p_access_mask & ~FILE_READ_ATTRIBUTES),
1610 &access_granted);
1611
1612 TALLOC_FREE(sd);
1613
1614 if (!NT_STATUS_IS_OK(status)) {
1615 DEBUG(10, ("smbd_calculate_access_mask: "
1616 "Access denied on file %s: "
1617 "when calculating maximum access\n",
1618 smb_fname_str_dbg(smb_fname)));
1619 return NT_STATUS_ACCESS_DENIED;
1620 }
1621 *p_access_mask = (access_granted | FILE_READ_ATTRIBUTES);
1622 return NT_STATUS_OK;
1623 }
1624
1625 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1626 const struct smb_filename *smb_fname,
1627 uint32_t access_mask,
1628 uint32_t *access_mask_out)
1629 {
1630 NTSTATUS status;
1631 uint32_t orig_access_mask = access_mask;
1632 uint32_t rejected_share_access;
1633
1634 /*
1635 * Convert GENERIC bits to specific bits.
1636 */
1637
1638 se_map_generic(&access_mask, &file_generic_mapping);
1639
1640 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1641 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1642
1643 status = smbd_calculate_maximum_allowed_access(
1644 conn, smb_fname, &access_mask);
1645
1646 if (!NT_STATUS_IS_OK(status)) {
1647 return status;
1648 }
1649
1650 access_mask &= conn->share_access;
1651 }
1652
1653 rejected_share_access = access_mask & ~(conn->share_access);
1654
1655 if (rejected_share_access) {
1656 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1657 "file %s: rejected by share access mask[0x%08X] "
1658 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1659 smb_fname_str_dbg(smb_fname),
1660 conn->share_access,
1661 orig_access_mask, access_mask,
1662 rejected_share_access));
1663 return NT_STATUS_ACCESS_DENIED;
1664 }
1665
1666 *access_mask_out = access_mask;
1667 return NT_STATUS_OK;
1668 }
1669
1670 /****************************************************************************
1671 Remove the deferred open entry under lock.
1672 ****************************************************************************/
1673
1674 void remove_deferred_open_entry(struct file_id id, uint64_t mid,
1675 struct server_id pid)
1676 {
1677 struct share_mode_lock *lck = get_existing_share_mode_lock(
1678 talloc_tos(), id);
1679 if (lck == NULL) {
1680 DEBUG(0, ("could not get share mode lock\n"));
1681 return;
1682 }
1683 del_deferred_open_entry(lck, mid, pid);
1684 TALLOC_FREE(lck);
1685 }
1686
1687 /****************************************************************************
1688 Return true if this is a state pointer to an asynchronous create.
1689 ****************************************************************************/
1690
1691 bool is_deferred_open_async(const void *ptr)
1692 {
1693 const struct deferred_open_record *state = (const struct deferred_open_record *)ptr;
1694
1695 return state->async_open;
1696 }
1697
1698 /****************************************************************************
1699 Open a file with a share mode. Passed in an already created files_struct *.
1700 ****************************************************************************/
1701
1702 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1703 struct smb_request *req,
1704 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1705 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1706 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1707 uint32 create_options, /* options such as delete on close. */
1708 uint32 new_dos_attributes, /* attributes used for new file. */
1709 int oplock_request, /* internal Samba oplock codes. */
1710 /* Information (FILE_EXISTS etc.) */
1711 uint32_t private_flags, /* Samba specific flags. */
1712 int *pinfo,
1713 files_struct *fsp)
1714 {
1715 struct smb_filename *smb_fname = fsp->fsp_name;
1716 int flags=0;
1717 int flags2=0;
1718 bool file_existed = VALID_STAT(smb_fname->st);
1719 bool def_acl = False;
1720 bool posix_open = False;
1721 bool new_file_created = False;
1722 bool clear_ads = false;
1723 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1724 mode_t new_unx_mode = (mode_t)0;
1725 mode_t unx_mode = (mode_t)0;
1726 int info;
1727 uint32 existing_dos_attributes = 0;
1728 struct timeval request_time = timeval_zero();
1729 struct share_mode_lock *lck = NULL;
1730 uint32 open_access_mask = access_mask;
1731 NTSTATUS status;
1732 char *parent_dir;
1733
1734 if (conn->printer) {
1735 /*
1736 * Printers are handled completely differently.
1737 * Most of the passed parameters are ignored.
1738 */
1739
1740 if (pinfo) {
1741 *pinfo = FILE_WAS_CREATED;
1742 }
1743
1744 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1745 smb_fname_str_dbg(smb_fname)));
1746
1747 if (!req) {
1748 DEBUG(0,("open_file_ntcreate: printer open without "
1749 "an SMB request!\n"));
1750 return NT_STATUS_INTERNAL_ERROR;
1751 }
1752
1753 return print_spool_open(fsp, smb_fname->base_name,
1754 req->vuid);
1755 }
1756
1757 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
1758 NULL)) {
1759 return NT_STATUS_NO_MEMORY;
1760 }
1761
1762 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1763 posix_open = True;
1764 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1765 new_dos_attributes = 0;
1766 } else {
1767 /* Windows allows a new file to be created and
1768 silently removes a FILE_ATTRIBUTE_DIRECTORY
1769 sent by the client. Do the same. */
1770
1771 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
1772
1773 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1774 * created new. */
1775 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
1776 smb_fname, parent_dir);
1777 }
1778
1779 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1780 "access_mask=0x%x share_access=0x%x "
1781 "create_disposition = 0x%x create_options=0x%x "
1782 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1783 smb_fname_str_dbg(smb_fname), new_dos_attributes,
1784 access_mask, share_access, create_disposition,
1785 create_options, (unsigned int)unx_mode, oplock_request,
1786 (unsigned int)private_flags));
1787
1788 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
1789 DEBUG(0, ("No smb request but not an internal only open!\n"));
1790 return NT_STATUS_INTERNAL_ERROR;
1791 }
1792
1793 /*
1794 * Only non-internal opens can be deferred at all
1795 */
1796
1797 if (req) {
1798 void *ptr;
1799 if (get_deferred_open_message_state(req,
1800 &request_time,
1801 &ptr)) {
1802 /* Remember the absolute time of the original
1803 request with this mid. We'll use it later to
1804 see if this has timed out. */
1805
1806 /* If it was an async create retry, the file
1807 didn't exist. */
1808
1809 if (is_deferred_open_async(ptr)) {
1810 SET_STAT_INVALID(smb_fname->st);
1811 file_existed = false;
1812 } else {
1813 struct deferred_open_record *state = (struct deferred_open_record *)ptr;
1814 /* Remove the deferred open entry under lock. */
1815 remove_deferred_open_entry(
1816 state->id, req->mid,
1817 messaging_server_id(req->sconn->msg_ctx));
1818 }
1819
1820 /* Ensure we don't reprocess this message. */
1821 remove_deferred_open_message_smb(req->sconn, req->mid);
1822 }
1823 }
1824
1825 if (!posix_open) {
1826 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
1827 if (file_existed) {
1828 existing_dos_attributes = dos_mode(conn, smb_fname);
1829 }
1830 }
1831
1832 /* ignore any oplock requests if oplocks are disabled */
1833 if (!lp_oplocks(SNUM(conn)) ||
1834 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
1835 /* Mask off everything except the private Samba bits. */
1836 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1837 }
1838
1839 /* this is for OS/2 long file names - say we don't support them */
1840 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
1841 /* OS/2 Workplace shell fix may be main code stream in a later
1842 * release. */
1843 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1844 "supported.\n"));
1845 if (use_nt_status()) {
1846 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1847 }
1848 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
1849 }
1850
1851 switch( create_disposition ) {
1852 /*
1853 * Currently we're using FILE_SUPERSEDE as the same as
1854 * FILE_OVERWRITE_IF but they really are
1855 * different. FILE_SUPERSEDE deletes an existing file
1856 * (requiring delete access) then recreates it.
1857 */
1858 case FILE_SUPERSEDE:
1859 /* If file exists replace/overwrite. If file doesn't
1860 * exist create. */
1861 flags2 |= (O_CREAT | O_TRUNC);
1862 clear_ads = true;
1863 break;
1864
1865 case FILE_OVERWRITE_IF:
1866 /* If file exists replace/overwrite. If file doesn't
1867 * exist create. */
1868 flags2 |= (O_CREAT | O_TRUNC);
1869 clear_ads = true;
1870 break;
1871
1872 case FILE_OPEN:
1873 /* If file exists open. If file doesn't exist error. */
1874 if (!file_existed) {
1875 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1876 "requested for file %s and file "
1877 "doesn't exist.\n",
1878 smb_fname_str_dbg(smb_fname)));
1879 errno = ENOENT;
1880 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1881 }
1882 break;
1883
1884 case FILE_OVERWRITE:
1885 /* If file exists overwrite. If file doesn't exist
1886 * error. */
1887 if (!file_existed) {
1888 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1889 "requested for file %s and file "
1890 "doesn't exist.\n",
1891 smb_fname_str_dbg(smb_fname) ));
1892 errno = ENOENT;
1893 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1894 }
1895 flags2 |= O_TRUNC;
1896 clear_ads = true;
1897 break;
1898
1899 case FILE_CREATE:
1900 /* If file exists error. If file doesn't exist
1901 * create. */
1902 if (file_existed) {
1903 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1904 "requested for file %s and file "
1905 "already exists.\n",
1906 smb_fname_str_dbg(smb_fname)));
1907 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
1908 errno = EISDIR;
1909 } else {
1910 errno = EEXIST;
1911 }
1912 return map_nt_error_from_unix(errno);
1913 }
1914 flags2 |= (O_CREAT|O_EXCL);
1915 break;
1916
1917 case FILE_OPEN_IF:
1918 /* If file exists open. If file doesn't exist
1919 * create. */
1920 flags2 |= O_CREAT;
1921 break;
1922
1923 default:
1924 return NT_STATUS_INVALID_PARAMETER;
1925 }
1926
1927 /* We only care about matching attributes on file exists and
1928 * overwrite. */
1929
1930 if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
1931 (create_disposition == FILE_OVERWRITE_IF))) {
1932 if (!open_match_attributes(conn, existing_dos_attributes,
1933 new_dos_attributes,
1934 smb_fname->st.st_ex_mode,
1935 unx_mode, &new_unx_mode)) {
1936 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1937 "for file %s (%x %x) (0%o, 0%o)\n",
1938 smb_fname_str_dbg(smb_fname),
1939 existing_dos_attributes,
1940 new_dos_attributes,
1941 (unsigned int)smb_fname->st.st_ex_mode,
1942 (unsigned int)unx_mode ));
1943 errno = EACCES;
1944 return NT_STATUS_ACCESS_DENIED;
1945 }
1946 }
1947
1948 status = smbd_calculate_access_mask(conn, smb_fname,
1949 access_mask,
1950 &access_mask);
1951 if (!NT_STATUS_IS_OK(status)) {
1952 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
1953 "on file %s returned %s\n",
1954 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
1955 return status;
1956 }
1957
1958 open_access_mask = access_mask;
1959
1960 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1961 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
1962 }
1963
1964 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1965 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
1966 access_mask));
1967
1968 /*
1969 * Note that we ignore the append flag as append does not
1970 * mean the same thing under DOS and Unix.
1971 */
1972
1973 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
1974 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1975 /* DENY_DOS opens are always underlying read-write on the
1976 file handle, no matter what the requested access mask
1977 says. */
1978 if ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1979 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
1980 flags = O_RDWR;
1981 } else {
1982 flags = O_WRONLY;
1983 }
1984 } else {
1985 flags = O_RDONLY;
1986 }
1987
1988 /*
1989 * Currently we only look at FILE_WRITE_THROUGH for create options.
1990 */
1991
1992 #if defined(O_SYNC)
1993 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
1994 flags2 |= O_SYNC;
1995 }
1996 #endif /* O_SYNC */
1997
1998 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
1999 flags2 |= O_APPEND;
2000 }
2001
2002 if (!posix_open && !CAN_WRITE(conn)) {
2003 /*
2004 * We should really return a permission denied error if either
2005 * O_CREAT or O_TRUNC are set, but for compatibility with
2006 * older versions of Samba we just AND them out.
2007 */
2008 flags2 &= ~(O_CREAT|O_TRUNC);
2009 }
2010
2011 /*
2012 * Ensure we can't write on a read-only share or file.
2013 */
2014
2015 if (flags != O_RDONLY && file_existed &&
2016 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
2017 DEBUG(5,("open_file_ntcreate: write access requested for "
2018 "file %s on read only %s\n",
2019 smb_fname_str_dbg(smb_fname),
2020 !CAN_WRITE(conn) ? "share" : "file" ));
2021 errno = EACCES;
2022 return NT_STATUS_ACCESS_DENIED;
2023 }
2024
2025 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2026 fsp->share_access = share_access;
2027 fsp->fh->private_options = private_flags;
2028 fsp->access_mask = open_access_mask; /* We change this to the
2029 * requested access_mask after
2030 * the open is done. */
2031 fsp->posix_open = posix_open;
2032
2033 /* Ensure no SAMBA_PRIVATE bits can be set. */
2034 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
2035
2036 if (timeval_is_zero(&request_time)) {
2037 request_time = fsp->open_time;
2038 }
2039
2040 if (file_existed) {
2041 struct share_mode_entry *batch_entry = NULL;
2042 struct share_mode_entry *exclusive_entry = NULL;
2043 bool got_level2_oplock = false;
2044 bool got_a_none_oplock = false;
2045 struct file_id id;
2046
2047 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2048 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2049
2050 lck = get_share_mode_lock(talloc_tos(), id,
2051 conn->connectpath,
2052 smb_fname, &old_write_time);
2053 if (lck == NULL) {
2054 DEBUG(0, ("Could not get share mode lock\n"));
2055 return NT_STATUS_SHARING_VIOLATION;
2056 }
2057
2058 /* Get the types we need to examine. */
2059 find_oplock_types(fsp,
2060 oplock_request,
2061 lck,
2062 &batch_entry,
2063 &exclusive_entry,
2064 &got_level2_oplock,
2065 &got_a_none_oplock);
2066
2067 /* First pass - send break only on batch oplocks. */
2068 if ((req != NULL) &&
2069 delay_for_batch_oplocks(fsp,
2070 req->mid,
2071 oplock_request,
2072 batch_entry)) {
2073 schedule_defer_open(lck, request_time, req);
2074 TALLOC_FREE(lck);
2075 return NT_STATUS_SHARING_VIOLATION;
2076 }
2077
2078 /* Use the client requested access mask here, not the one we
2079 * open with. */
2080 status = open_mode_check(conn, lck, fsp->name_hash,
2081 access_mask, share_access,
2082 create_options, &file_existed);
2083
2084 if (NT_STATUS_IS_OK(status)) {
2085 /* We might be going to allow this open. Check oplock
2086 * status again. */
2087 /* Second pass - send break for both batch or
2088 * exclusive oplocks. */
2089 if ((req != NULL) &&
2090 delay_for_exclusive_oplocks(
2091 fsp,
2092 req->mid,
2093 oplock_request,
2094 exclusive_entry)) {
2095 schedule_defer_open(lck, request_time, req);
2096 TALLOC_FREE(lck);
2097 return NT_STATUS_SHARING_VIOLATION;
2098 }
2099 }
2100
2101 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
2102 /* DELETE_PENDING is not deferred for a second */
2103 TALLOC_FREE(lck);
2104 return status;
2105 }
2106
2107 grant_fsp_oplock_type(fsp,
2108 oplock_request,
2109 got_level2_oplock,
2110 got_a_none_oplock);
2111
2112 if (!NT_STATUS_IS_OK(status)) {
2113 uint32 can_access_mask;
2114 bool can_access = True;
2115
2116 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
2117
2118 /* Check if this can be done with the deny_dos and fcb
2119 * calls. */
2120 if (private_flags &
2121 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
2122 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
2123 if (req == NULL) {
2124 DEBUG(0, ("DOS open without an SMB "
2125 "request!\n"));
2126 TALLOC_FREE(lck);
2127 return NT_STATUS_INTERNAL_ERROR;
2128 }
2129
2130 /* Use the client requested access mask here,
2131 * not the one we open with. */
2132 status = fcb_or_dos_open(req,
2133 conn,
2134 fsp,
2135 smb_fname,
2136 id,
2137 req->smbpid,
2138 req->vuid,
2139 access_mask,
2140 share_access,
2141 create_options);
2142
2143 if (NT_STATUS_IS_OK(status)) {
2144 TALLOC_FREE(lck);
2145 if (pinfo) {
2146 *pinfo = FILE_WAS_OPENED;
2147 }
2148 return NT_STATUS_OK;
2149 }
2150 }
2151
2152 /*
2153 * This next line is a subtlety we need for
2154 * MS-Access. If a file open will fail due to share
2155 * permissions and also for security (access) reasons,
2156 * we need to return the access failed error, not the
2157 * share error. We can't open the file due to kernel
2158 * oplock deadlock (it's possible we failed above on
2159 * the open_mode_check()) so use a userspace check.
2160 */
2161
2162 if (flags & O_RDWR) {
2163 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2164 } else if (flags & O_WRONLY) {
2165 can_access_mask = FILE_WRITE_DATA;
2166 } else {
2167 can_access_mask = FILE_READ_DATA;
2168 }
2169
2170 if (((can_access_mask & FILE_WRITE_DATA) &&
2171 !CAN_WRITE(conn)) ||
2172 !NT_STATUS_IS_OK(smbd_check_access_rights(conn,
2173 smb_fname, can_access_mask))) {
2174 can_access = False;
2175 }
2176
2177 /*
2178 * If we're returning a share violation, ensure we
2179 * cope with the braindead 1 second delay.
2180 */
2181
2182 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2183 lp_defer_sharing_violations()) {
2184 struct timeval timeout;
2185 struct deferred_open_record state;
2186 int timeout_usecs;
2187
2188 /* this is a hack to speed up torture tests
2189 in 'make test' */
2190 timeout_usecs = lp_parm_int(SNUM(conn),
2191 "smbd","sharedelay",
2192 SHARING_VIOLATION_USEC_WAIT);
2193
2194 /* This is a relative time, added to the absolute
2195 request_time value to get the absolute timeout time.
2196 Note that if this is the second or greater time we enter
2197 this codepath for this particular request mid then
2198 request_time is left as the absolute time of the *first*
2199 time this request mid was processed. This is what allows
2200 the request to eventually time out. */
2201
2202 timeout = timeval_set(0, timeout_usecs);
2203
2204 /* Nothing actually uses state.delayed_for_oplocks
2205 but it's handy to differentiate in debug messages
2206 between a 30 second delay due to oplock break, and
2207 a 1 second delay for share mode conflicts. */
2208
2209 state.delayed_for_oplocks = False;
2210 state.async_open = false;
2211 state.id = id;
2212
2213 if ((req != NULL)
2214 && !request_timed_out(request_time,
2215 timeout)) {
2216 defer_open(lck, request_time, timeout,
2217 req, &state);
2218 }
2219 }
2220
2221 TALLOC_FREE(lck);
2222 if (can_access) {
2223 /*
2224 * We have detected a sharing violation here
2225 * so return the correct error code
2226 */
2227 status = NT_STATUS_SHARING_VIOLATION;
2228 } else {
2229 status = NT_STATUS_ACCESS_DENIED;
2230 }
2231 return status;
2232 }
2233
2234 /*
2235 * We exit this block with the share entry *locked*.....
2236 */
2237 }
2238
2239 SMB_ASSERT(!file_existed || (lck != NULL));
2240
2241 /*
2242 * Ensure we pay attention to default ACLs on directories if required.
2243 */
2244
2245 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2246 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2247 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2248 }
2249
2250 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2251 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2252 (unsigned int)flags, (unsigned int)flags2,
2253 (unsigned int)unx_mode, (unsigned int)access_mask,
2254 (unsigned int)open_access_mask));
2255
2256 /*
2257 * open_file strips any O_TRUNC flags itself.
2258 */
2259
2260 fsp_open = open_file(fsp, conn, req, parent_dir,
2261 flags|flags2, unx_mode, access_mask,
2262 open_access_mask);
2263
2264 if (!NT_STATUS_IS_OK(fsp_open)) {
2265 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_RETRY)) {
2266 schedule_async_open(request_time, req);
2267 }
2268 TALLOC_FREE(lck);
2269 return fsp_open;
2270 }
2271
2272 if (!file_existed) {
2273 struct share_mode_entry *batch_entry = NULL;
2274 struct share_mode_entry *exclusive_entry = NULL;
2275 bool got_level2_oplock = false;
2276 bool got_a_none_oplock = false;
2277 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2278 struct file_id id;
2279 /*
2280 * Deal with the race condition where two smbd's detect the
2281 * file doesn't exist and do the create at the same time. One
2282 * of them will win and set a share mode, the other (ie. this
2283 * one) should check if the requested share mode for this
2284 * create is allowed.
2285 */
2286
2287 /*
2288 * Now the file exists and fsp is successfully opened,
2289 * fsp->dev and fsp->inode are valid and should replace the
2290 * dev=0,inode=0 from a non existent file. Spotted by
2291 * Nadav Danieli <nadavd@exanet.com>. JRA.
2292 */
2293
2294 id = fsp->file_id;
2295
2296 lck = get_share_mode_lock(talloc_tos(), id,
2297 conn->connectpath,
2298 smb_fname, &old_write_time);
2299
2300 if (lck == NULL) {
2301 DEBUG(0, ("open_file_ntcreate: Could not get share "
2302 "mode lock for %s\n",
2303 smb_fname_str_dbg(smb_fname)));
2304 fd_close(fsp);
2305 return NT_STATUS_SHARING_VIOLATION;
2306 }
2307
2308 /* Get the types we need to examine. */
2309 find_oplock_types(fsp,
2310 oplock_request,
2311 lck,
2312 &batch_entry,
2313 &exclusive_entry,
2314 &got_level2_oplock,
2315 &got_a_none_oplock);
2316
2317 /* First pass - send break only on batch oplocks. */
2318 if ((req != NULL) &&
2319 delay_for_batch_oplocks(fsp,
2320 req->mid,
2321 oplock_request,
2322 batch_entry)) {
2323 schedule_defer_open(lck, request_time, req);
2324 TALLOC_FREE(lck);
2325 fd_close(fsp);
2326 return NT_STATUS_SHARING_VIOLATION;
2327 }
2328
2329 status = open_mode_check(conn, lck, fsp->name_hash,
2330 access_mask, share_access,
2331 create_options, &file_existed);
2332
2333 if (NT_STATUS_IS_OK(status)) {
2334 /* We might be going to allow this open. Check oplock
2335 * status again. */
2336 /* Second pass - send break for both batch or
2337 * exclusive oplocks. */
2338 if ((req != NULL) &&
2339 delay_for_exclusive_oplocks(
2340 fsp,
2341 req->mid,
2342 oplock_request,
2343 exclusive_entry)) {
2344 schedule_defer_open(lck, request_time, req);
2345 TALLOC_FREE(lck);
2346 fd_close(fsp);
2347 return NT_STATUS_SHARING_VIOLATION;
2348 }
2349 }
2350
2351 if (!NT_STATUS_IS_OK(status)) {
2352 struct deferred_open_record state;
2353
2354 state.delayed_for_oplocks = False;
2355 state.async_open = false;
2356 state.id = id;
2357
2358 /* Do it all over again immediately. In the second
2359 * round we will find that the file existed and handle
2360 * the DELETE_PENDING and FCB cases correctly. No need
2361 * to duplicate the code here. Essentially this is a
2362 * "goto top of this function", but don't tell
2363 * anybody... */
2364
2365 if (req != NULL) {
2366 defer_open(lck, request_time, timeval_zero(),
2367 req, &state);
2368 }
2369 TALLOC_FREE(lck);
2370 fd_close(fsp);
2371 return status;
2372 }
2373
2374 grant_fsp_oplock_type(fsp,
2375 oplock_request,
2376 got_level2_oplock,
2377 got_a_none_oplock);
2378
2379 /*
2380 * We exit this block with the share entry *locked*.....
2381 */
2382
2383 }
2384
2385 SMB_ASSERT(lck != NULL);
2386
2387 /* Delete streams if create_disposition requires it */
2388 if (file_existed && clear_ads &&
2389 !is_ntfs_stream_smb_fname(smb_fname)) {
2390 status = delete_all_streams(conn, smb_fname->base_name);
2391 if (!NT_STATUS_IS_OK(status)) {
2392 TALLOC_FREE(lck);
2393 fd_close(fsp);
2394 return status;
2395 }
2396 }
2397
2398 /* note that we ignore failure for the following. It is
2399 basically a hack for NFS, and NFS will never set one of
2400 these only read them. Nobody but Samba can ever set a deny
2401 mode and we have already checked our more authoritative
2402 locking database for permission to set this deny mode. If
2403 the kernel refuses the operations then the kernel is wrong.
2404 note that GPFS supports it as well - jmcd */
2405
2406 if (fsp->fh->fd != -1) {
2407 int ret_flock;
2408 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2409 if(ret_flock == -1 ){
2410
2411 TALLOC_FREE(lck);
2412 fd_close(fsp);
2413
2414 return NT_STATUS_SHARING_VIOLATION;
2415 }
2416 }
2417
2418 /*
2419 * At this point onwards, we can guarentee that the share entry
2420 * is locked, whether we created the file or not, and that the
2421 * deny mode is compatible with all current opens.
2422 */
2423
2424 /*
2425 * If requested, truncate the file.
2426 */
2427
2428 if (file_existed && (flags2&O_TRUNC)) {
2429 /*
2430 * We are modifying the file after open - update the stat
2431 * struct..
2432 */
2433 if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
2434 (SMB_VFS_FSTAT(fsp, &smb_fname->st)==-1)) {
2435 status = map_nt_error_from_unix(errno);
2436 TALLOC_FREE(lck);
2437 fd_close(fsp);
2438 return status;
2439 }
2440 }
2441
2442 /*
2443 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2444 * but we don't have to store this - just ignore it on access check.
2445 */
2446 if (conn->sconn->using_smb2) {
2447 /*
2448 * SMB2 doesn't return it (according to Microsoft tests).
2449 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2450 * File created with access = 0x7 (Read, Write, Delete)
2451 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2452 */
2453 fsp->access_mask = access_mask;
2454 } else {
2455 /* But SMB1 does. */
2456 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2457 }
2458
2459 if (file_existed) {
2460 /* stat opens on existing files don't get oplocks. */
2461 if (is_stat_open(open_access_mask)) {
2462 fsp->oplock_type = NO_OPLOCK;
2463 }
2464
2465 if (flags2 & O_TRUNC) {
2466 info = FILE_WAS_OVERWRITTEN;
2467 } else {
2468 info = FILE_WAS_OPENED;
2469 }
2470 } else {
2471 info = FILE_WAS_CREATED;
2472 }
2473
2474 if (pinfo) {
2475 *pinfo = info;
2476 }
2477
2478 /*
2479 * Setup the oplock info in both the shared memory and
2480 * file structs.
2481 */
2482
2483 status = set_file_oplock(fsp, fsp->oplock_type);
2484 if (!NT_STATUS_IS_OK(status)) {
2485 /*
2486 * Could not get the kernel oplock or there are byte-range
2487 * locks on the file.
2488 */
2489 fsp->oplock_type = NO_OPLOCK;
2490 }
2491
2492 set_share_mode(lck, fsp, get_current_uid(conn),
2493 req ? req->mid : 0,
2494 fsp->oplock_type);
2495
2496 /* Handle strange delete on close create semantics. */
2497 if (create_options & FILE_DELETE_ON_CLOSE) {
2498
2499 status = can_set_delete_on_close(fsp, new_dos_attributes);
2500
2501 if (!NT_STATUS_IS_OK(status)) {
2502 /* Remember to delete the mode we just added. */
2503 del_share_mode(lck, fsp);
2504 TALLOC_FREE(lck);
2505 fd_close(fsp);
2506 return status;
2507 }
2508 /* Note that here we set the *inital* delete on close flag,
2509 not the regular one. The magic gets handled in close. */
2510 fsp->initial_delete_on_close = True;
2511 }
2512
2513 if (info == FILE_WAS_OVERWRITTEN
2514 || info == FILE_WAS_CREATED
2515 || info == FILE_WAS_SUPERSEDED) {
2516 new_file_created = True;
2517 }
2518
2519 if (new_file_created) {
2520 /* Files should be initially set as archive */
2521 if (lp_map_archive(SNUM(conn)) ||
2522 lp_store_dos_attributes(SNUM(conn))) {
2523 if (!posix_open) {
2524 if (file_set_dosmode(conn, smb_fname,
2525 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2526 parent_dir, true) == 0) {
2527 unx_mode = smb_fname->st.st_ex_mode;
2528 }
2529 }
2530 }
2531 }
2532
2533 /* Determine sparse flag. */
2534 if (posix_open) {
2535 /* POSIX opens are sparse by default. */
2536 fsp->is_sparse = true;
2537 } else {
2538 fsp->is_sparse = (file_existed &&
2539 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2540 }
2541
2542 /*
2543 * Take care of inherited ACLs on created files - if default ACL not
2544 * selected.
2545 */
2546
2547 if (!posix_open && !file_existed && !def_acl) {
2548
2549 int saved_errno = errno; /* We might get ENOSYS in the next
2550 * call.. */
2551
2552 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2553 errno == ENOSYS) {
2554 errno = saved_errno; /* Ignore ENOSYS */
2555 }
2556
2557 } else if (new_unx_mode) {
2558
2559 int ret = -1;
2560
2561 /* Attributes need changing. File already existed. */
2562
2563 {
2564 int saved_errno = errno; /* We might get ENOSYS in the
2565 * next call.. */
2566 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2567
2568 if (ret == -1 && errno == ENOSYS) {
2569 errno = saved_errno; /* Ignore ENOSYS */
2570 } else {
2571 DEBUG(5, ("open_file_ntcreate: reset "
2572 "attributes of file %s to 0%o\n",
2573 smb_fname_str_dbg(smb_fname),
2574 (unsigned int)new_unx_mode));
2575 ret = 0; /* Don't do the fchmod below. */
2576 }
2577 }
2578
2579 if ((ret == -1) &&
2580 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2581 DEBUG(5, ("open_file_ntcreate: failed to reset "
2582 "attributes of file %s to 0%o\n",
2583 smb_fname_str_dbg(smb_fname),
2584 (unsigned int)new_unx_mode));
2585 }
2586
2587 /* If this is a successful open, we must remove any deferred open
2588 * records. */
2589 if (req != NULL) {
2590 del_deferred_open_entry(lck, req->mid,
2591 messaging_server_id(req->sconn->msg_ctx));
2592 }
2593 TALLOC_FREE(lck);
2594
2595 return NT_STATUS_OK;
2596 }
2597
2598
2599 /****************************************************************************
2600 Open a file for for write to ensure that we can fchmod it.
2601 ****************************************************************************/
2602
2603 NTSTATUS open_file_fchmod(connection_struct *conn,
2604 struct smb_filename *smb_fname,
2605 files_struct **result)
2606 {
2607 if (!VALID_STAT(smb_fname->st)) {
2608 return NT_STATUS_INVALID_PARAMETER;
2609 }
2610
2611 return SMB_VFS_CREATE_FILE(
2612 conn, /* conn */
2613 NULL, /* req */
2614 0, /* root_dir_fid */
2615 smb_fname, /* fname */
2616 FILE_WRITE_DATA, /* access_mask */
2617 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2618 FILE_SHARE_DELETE),
2619 FILE_OPEN, /* create_disposition*/
2620 0, /* create_options */
2621 0, /* file_attributes */
2622 INTERNAL_OPEN_ONLY, /* oplock_request */
2623 0, /* allocation_size */
2624 0, /* private_flags */
2625 NULL, /* sd */
2626 NULL, /* ea_list */
2627 result, /* result */
2628 NULL); /* pinfo */
2629 }
2630
2631 static NTSTATUS mkdir_internal(connection_struct *conn,
2632 struct smb_filename *smb_dname,
2633 uint32 file_attributes)
2634 {
2635 mode_t mode;
2636 char *parent_dir = NULL;
2637 NTSTATUS status;
2638 bool posix_open = false;
2639 bool need_re_stat = false;
2640 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2641
2642 if(access_mask & ~(conn->share_access)) {
2643 DEBUG(5,("mkdir_internal: failing share access "
2644 "%s\n", lp_servicename(SNUM(conn))));
2645 return NT_STATUS_ACCESS_DENIED;
2646 }
2647
2648 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2649 NULL)) {
2650 return NT_STATUS_NO_MEMORY;
2651 }
2652
2653 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2654 posix_open = true;
2655 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2656 } else {
2657 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2658 }
2659
2660 status = check_parent_access(conn,
2661 smb_dname,
2662 access_mask);
2663 if(!NT_STATUS_IS_OK(status)) {
2664 DEBUG(5,("mkdir_internal: check_parent_access "
2665 "on directory %s for path %s returned %s\n",
2666 parent_dir,
2667 smb_dname->base_name,
2668 nt_errstr(status) ));
2669 return status;
2670 }
2671
2672 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2673 return map_nt_error_from_unix(errno);
2674 }
2675
2676 /* Ensure we're checking for a symlink here.... */
2677 /* We don't want to get caught by a symlink racer. */
2678
2679 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2680 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2681 smb_fname_str_dbg(smb_dname), strerror(errno)));
2682 return map_nt_error_from_unix(errno);
2683 }
2684
2685 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2686 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2687 smb_fname_str_dbg(smb_dname)));
2688 return NT_STATUS_NOT_A_DIRECTORY;
2689 }
2690
2691 if (lp_store_dos_attributes(SNUM(conn))) {
2692 if (!posix_open) {
2693 file_set_dosmode(conn, smb_dname,
2694 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2695 parent_dir, true);
2696 }
2697 }
2698
2699 if (lp_inherit_perms(SNUM(conn))) {
2700 inherit_access_posix_acl(conn, parent_dir,
2701 smb_dname->base_name, mode);
2702 need_re_stat = true;
2703 }
2704
2705 if (!posix_open) {
2706 /*
2707 * Check if high bits should have been set,
2708 * then (if bits are missing): add them.
2709 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2710 * dir.
2711 */
2712 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2713 (mode & ~smb_dname->st.st_ex_mode)) {
2714 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2715 (smb_dname->st.st_ex_mode |
2716 (mode & ~smb_dname->st.st_ex_mode)));
2717 need_re_stat = true;
2718 }
2719 }
2720
2721 /* Change the owner if required. */
2722 if (lp_inherit_owner(SNUM(conn))) {
2723 change_dir_owner_to_parent(conn, parent_dir,
2724 smb_dname->base_name,
2725 &smb_dname->st);
2726 need_re_stat = true;
2727 }
2728
2729 if (need_re_stat) {
2730 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2731 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2732 smb_fname_str_dbg(smb_dname), strerror(errno)));
2733 return map_nt_error_from_unix(errno);
2734 }
2735 }
2736
2737 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2738 smb_dname->base_name);
2739
2740 return NT_STATUS_OK;
2741 }
2742
2743 /****************************************************************************
2744 Ensure we didn't get symlink raced on opening a directory.
2745 ****************************************************************************/
2746
2747 bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
2748 const SMB_STRUCT_STAT *sbuf2)
2749 {
2750 if (sbuf1->st_ex_uid != sbuf2->st_ex_uid ||
2751 sbuf1->st_ex_gid != sbuf2->st_ex_gid ||
2752 sbuf1->st_ex_dev != sbuf2->st_ex_dev ||
2753 sbuf1->st_ex_ino != sbuf2->st_ex_ino) {
2754 return false;
2755 }
2756 return true;
2757 }
2758
2759 /****************************************************************************
2760 Open a directory from an NT SMB call.
2761 ****************************************************************************/
2762
2763 static NTSTATUS open_directory(connection_struct *conn,
2764 struct smb_request *req,
2765 struct smb_filename *smb_dname,
2766 uint32 access_mask,
2767 uint32 share_access,
2768 uint32 create_disposition,
2769 uint32 create_options,
2770 uint32 file_attributes,
2771 int *pinfo,
2772 files_struct **result)
2773 {
2774 files_struct *fsp = NULL;
2775 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2776 struct share_mode_lock *lck = NULL;
2777 NTSTATUS status;
2778 struct timespec mtimespec;
2779 int info = 0;
2780
2781 if (is_ntfs_stream_smb_fname(smb_dname)) {
2782 DEBUG(2, ("open_directory: %s is a stream name!\n",
2783 smb_fname_str_dbg(smb_dname)));
2784 return NT_STATUS_NOT_A_DIRECTORY;
2785 }
2786
2787 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
2788 /* Ensure we have a directory attribute. */
2789 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2790 }
2791
2792 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2793 "share_access = 0x%x create_options = 0x%x, "
2794 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2795 smb_fname_str_dbg(smb_dname),
2796 (unsigned int)access_mask,
2797 (unsigned int)share_access,
2798 (unsigned int)create_options,
2799 (unsigned int)create_disposition,
2800 (unsigned int)file_attributes));
2801
2802 status = smbd_calculate_access_mask(conn, smb_dname,
2803 access_mask, &access_mask);
2804 if (!NT_STATUS_IS_OK(status)) {
2805 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2806 "on file %s returned %s\n",
2807 smb_fname_str_dbg(smb_dname),
2808 nt_errstr(status)));
2809 return status;
2810 }
2811
2812 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2813 !security_token_has_privilege(get_current_nttok(conn),
2814 SEC_PRIV_SECURITY)) {
2815 DEBUG(10, ("open_directory: open on %s "
2816 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2817 smb_fname_str_dbg(smb_dname)));
2818 return NT_STATUS_PRIVILEGE_NOT_HELD;
2819 }
2820
2821 switch( create_disposition ) {
2822 case FILE_OPEN:
2823
2824 if (!dir_existed) {
2825 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2826 }
2827
2828 info = FILE_WAS_OPENED;
2829 break;
2830
2831 case FILE_CREATE:
2832
2833 /* If directory exists error. If directory doesn't
2834 * exist create. */
2835
2836 if (dir_existed) {
2837 status = NT_STATUS_OBJECT_NAME_COLLISION;
2838 DEBUG(2, ("open_directory: unable to create "
2839 "%s. Error was %s\n",
2840 smb_fname_str_dbg(smb_dname),
2841 nt_errstr(status)));
2842 return status;
2843 }
2844
2845 status = mkdir_internal(conn, smb_dname,
2846 file_attributes);
2847
2848 if (!NT_STATUS_IS_OK(status)) {
2849 DEBUG(2, ("open_directory: unable to create "
2850 "%s. Error was %s\n",
2851 smb_fname_str_dbg(smb_dname),
2852 nt_errstr(status)));
2853 return status;
2854 }
2855
2856 info = FILE_WAS_CREATED;
2857 break;
2858
2859 case FILE_OPEN_IF:
2860 /*
2861 * If directory exists open. If directory doesn't
2862 * exist create.
2863 */
2864
2865 if (dir_existed) {
2866 status = NT_STATUS_OK;
2867 info = FILE_WAS_OPENED;
2868 } else {
2869 status = mkdir_internal(conn, smb_dname,
2870 file_attributes);
2871
2872 if (NT_STATUS_IS_OK(status)) {
2873 info = FILE_WAS_CREATED;
2874 } else {
2875 /* Cope with create race. */
2876 if (!NT_STATUS_EQUAL(status,
2877 NT_STATUS_OBJECT_NAME_COLLISION)) {
2878 DEBUG(2, ("open_directory: unable to create "
2879 "%s. Error was %s\n",
2880 smb_fname_str_dbg(smb_dname),
2881 nt_errstr(status)));
2882 return status;
2883 }
2884 info = FILE_WAS_OPENED;
2885 }
2886 }
2887
2888 break;
2889
2890 case FILE_SUPERSEDE:
2891 case FILE_OVERWRITE:
2892 case FILE_OVERWRITE_IF:
2893 default:
2894 DEBUG(5,("open_directory: invalid create_disposition "
2895 "0x%x for directory %s\n",
2896 (unsigned int)create_disposition,
2897 smb_fname_str_dbg(smb_dname)));
2898 return NT_STATUS_INVALID_PARAMETER;
2899 }
2900
2901 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
2902 DEBUG(5,("open_directory: %s is not a directory !\n",
2903 smb_fname_str_dbg(smb_dname)));
2904 return NT_STATUS_NOT_A_DIRECTORY;
2905 }
2906
2907 if (info == FILE_WAS_OPENED) {
2908 status = smbd_check_access_rights(conn, smb_dname, access_mask);
2909 if (!NT_STATUS_IS_OK(status)) {
2910 DEBUG(10, ("open_directory: smbd_check_access_rights on "
2911 "file %s failed with %s\n",
2912 smb_fname_str_dbg(smb_dname),
2913 nt_errstr(status)));
2914 return status;
2915 }
2916 }
2917
2918 status = file_new(req, conn, &fsp);
2919 if(!NT_STATUS_IS_OK(status)) {
2920 return status;
2921 }
2922
2923 /*
2924 * Setup the files_struct for it.
2925 */
2926
2927 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
2928 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
2929 fsp->file_pid = req ? req->smbpid : 0;
2930 fsp->can_lock = False;
2931 fsp->can_read = False;
2932 fsp->can_write = False;
2933
2934 fsp->share_access = share_access;
2935 fsp->fh->private_options = 0;
2936 /*
2937 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2938 */
2939 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2940 fsp->print_file = NULL;
2941 fsp->modified = False;
2942 fsp->oplock_type = NO_OPLOCK;
2943 fsp->sent_oplock_break = NO_BREAK_SENT;
2944 fsp->is_directory = True;
2945 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
2946 status = fsp_set_smb_fname(fsp, smb_dname);
2947 if (!NT_STATUS_IS_OK(status)) {
2948 file_free(req, fsp);
2949 return status;
2950 }
2951
2952 mtimespec = smb_dname->st.st_ex_mtime;
2953
2954 #ifdef O_DIRECTORY
2955 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
2956 #else
2957 /* POSIX allows us to open a directory with O_RDONLY. */
2958 status = fd_open(conn, fsp, O_RDONLY, 0);
2959 #endif
2960 if (!NT_STATUS_IS_OK(status)) {
2961 DEBUG(5, ("open_directory: Could not open fd for "
2962 "%s (%s)\n",
2963 smb_fname_str_dbg(smb_dname),
2964 nt_errstr(status)));
2965 file_free(req, fsp);
2966 return status;
2967 }
2968
2969 status = vfs_stat_fsp(fsp);
2970 if (!NT_STATUS_IS_OK(status)) {
2971 fd_close(fsp);
2972 file_free(req, fsp);
2973 return status;
2974 }
2975
2976 /* Ensure there was no race condition. */
2977 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
2978 DEBUG(5,("open_directory: stat struct differs for "
2979 "directory %s.\n",
2980 smb_fname_str_dbg(smb_dname)));
2981 fd_close(fsp);
2982 file_free(req, fsp);
2983 return NT_STATUS_ACCESS_DENIED;
2984 }
2985
2986 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
2987 conn->connectpath, smb_dname,
2988 &mtimespec);
2989
2990 if (lck == NULL) {
2991 DEBUG(0, ("open_directory: Could not get share mode lock for "
2992 "%s\n", smb_fname_str_dbg(smb_dname)));
2993 fd_close(fsp);
2994 file_free(req, fsp);
2995 return NT_STATUS_SHARING_VIOLATION;
2996 }
2997
2998 status = open_mode_check(conn, lck, fsp->name_hash,
2999 access_mask, share_access,
3000 create_options, &dir_existed);
3001
3002 if (!NT_STATUS_IS_OK(status)) {
3003 TALLOC_FREE(lck);
3004 fd_close(fsp);
3005 file_free(req, fsp);
3006 return status;
3007 }
3008
3009 set_share_mode(lck, fsp, get_current_uid(conn),
3010 req ? req->mid : 0, NO_OPLOCK);
3011
3012 /* For directories the delete on close bit at open time seems
3013 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3014 if (create_options & FILE_DELETE_ON_CLOSE) {
3015 status = can_set_delete_on_close(fsp, 0);
3016 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
3017 TALLOC_FREE(lck);
3018 fd_close(fsp);
3019 file_free(req, fsp);
3020 return status;
3021 }
3022
3023 if (NT_STATUS_IS_OK(status)) {
3024 /* Note that here we set the *inital* delete on close flag,
3025 not the regular one. The magic gets handled in close. */
3026 fsp->initial_delete_on_close = True;
3027 }
3028 }
3029
3030 TALLOC_FREE(lck);
3031
3032 if (pinfo) {
3033 *pinfo = info;
3034 }
3035
3036 *result = fsp;
3037 return NT_STATUS_OK;
3038 }
3039
3040 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
3041 struct smb_filename *smb_dname)
3042 {
3043 NTSTATUS status;
3044 files_struct *fsp;
3045
3046 status = SMB_VFS_CREATE_FILE(
3047 conn, /* conn */
3048 req, /* req */
3049 0, /* root_dir_fid */
3050 smb_dname, /* fname */
3051 FILE_READ_ATTRIBUTES, /* access_mask */
3052 FILE_SHARE_NONE, /* share_access */
3053 FILE_CREATE, /* create_disposition*/
3054 FILE_DIRECTORY_FILE, /* create_options */
3055 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
3056 0, /* oplock_request */
3057 0, /* allocation_size */
3058 0, /* private_flags */
3059 NULL, /* sd */
3060 NULL, /* ea_list */
3061 &fsp, /* result */
3062 NULL); /* pinfo */
3063
3064 if (NT_STATUS_IS_OK(status)) {
3065 close_file(req, fsp, NORMAL_CLOSE);
3066 }
3067
3068 return status;
3069 }
3070
3071 /****************************************************************************
3072 Receive notification that one of our open files has been renamed by another
3073 smbd process.
3074 ****************************************************************************/
3075
3076 void msg_file_was_renamed(struct messaging_context *msg,
3077 void *private_data,
3078 uint32_t msg_type,
3079 struct server_id server_id,
3080 DATA_BLOB *data)
3081 {
3082 files_struct *fsp;
3083 char *frm = (char *)data->data;
3084 struct file_id id;
3085 const char *sharepath;
3086 const char *base_name;
3087 const char *stream_name;
3088 struct smb_filename *smb_fname = NULL;
3089 size_t sp_len, bn_len;
3090 NTSTATUS status;
3091 struct smbd_server_connection *sconn =
3092 talloc_get_type_abort(private_data,
3093 struct smbd_server_connection);
3094
3095 if (data->data == NULL
3096 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
3097 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3098 (int)data->length));
3099 return;
3100 }
3101
3102 /* Unpack the message. */
3103 pull_file_id_24(frm, &id);
3104 sharepath = &frm[24];
3105 sp_len = strlen(sharepath);
3106 base_name = sharepath + sp_len + 1;
3107 bn_len = strlen(base_name);
3108 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3109
3110 /* stream_name must always be NULL if there is no stream. */
3111 if (stream_name[0] == '\0') {
3112 stream_name = NULL;
3113 }
3114
3115 status = create_synthetic_smb_fname(talloc_tos(), base_name,
3116 stream_name, NULL, &smb_fname);
3117 if (!NT_STATUS_IS_OK(status)) {
3118 return;
3119 }
3120
3121 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3122 "file_id %s\n",
3123 sharepath, smb_fname_str_dbg(smb_fname),
3124 file_id_string_tos(&id)));
3125
3126 for(fsp = file_find_di_first(sconn, id); fsp;
3127 fsp = file_find_di_next(fsp)) {
3128 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3129
3130 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3131 fsp_fnum_dbg(fsp), fsp_str_dbg(fsp),
3132 smb_fname_str_dbg(smb_fname)));
3133 status = fsp_set_smb_fname(fsp, smb_fname);
3134 if (!NT_STATUS_IS_OK(status)) {
3135 goto out;
3136 }
3137 } else {
3138 /* TODO. JRA. */
3139 /* Now we have the complete path we can work out if this is
3140 actually within this share and adjust newname accordingly. */
3141 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3142 "not sharepath %s) "
3143 "%s from %s -> %s\n",
3144 fsp->conn->connectpath,
3145 sharepath,
3146 fsp_fnum_dbg(fsp),
3147 fsp_str_dbg(fsp),
3148 smb_fname_str_dbg(smb_fname)));
3149 }
3150 }
3151 out:
3152 TALLOC_FREE(smb_fname);
3153 return;
3154 }
3155
3156 /*
3157 * If a main file is opened for delete, all streams need to be checked for
3158 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3159 * If that works, delete them all by setting the delete on close and close.
3160 */
3161
3162 NTSTATUS open_streams_for_delete(connection_struct *conn,
3163 const char *fname)
3164 {
3165 struct stream_struct *stream_info = NULL;
3166 files_struct **streams = NULL;
3167 int i;
3168 unsigned int num_streams = 0;
3169 TALLOC_CTX *frame = talloc_stackframe();
3170 NTSTATUS status;
3171
3172 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3173 &num_streams, &stream_info);
3174
3175 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3176 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3177 DEBUG(10, ("no streams around\n"));
3178 TALLOC_FREE(frame);
3179 return NT_STATUS_OK;
3180 }
3181
3182 if (!NT_STATUS_IS_OK(status)) {
3183 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3184 nt_errstr(status)));
3185 goto fail;
3186 }
3187
3188 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3189 num_streams));
3190
3191 if (num_streams == 0) {
3192 TALLOC_FREE(frame);
3193 return NT_STATUS_OK;
3194 }
3195
3196 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3197 if (streams == NULL) {
3198 DEBUG(0, ("talloc failed\n"));
3199 status = NT_STATUS_NO_MEMORY;
3200 goto fail;
3201 }
3202
3203 for (i=0; i<num_streams; i++) {
3204 struct smb_filename *smb_fname = NULL;
3205
3206 if (strequal(stream_info[i].name, "::$DATA")) {
3207 streams[i] = NULL;
3208 continue;
3209 }
3210
3211 status = create_synthetic_smb_fname(talloc_tos(), fname,
3212 stream_info[i].name,
3213 NULL, &smb_fname);
3214 if (!NT_STATUS_IS_OK(status)) {
3215 goto fail;
3216 }
3217
3218 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3219 DEBUG(10, ("Unable to stat stream: %s\n",
3220 smb_fname_str_dbg(smb_fname)));
3221 }
3222
3223 status = SMB_VFS_CREATE_FILE(
3224 conn, /* conn */
3225 NULL, /* req */
3226 0, /* root_dir_fid */
3227 smb_fname, /* fname */
3228 DELETE_ACCESS, /* access_mask */
3229 (FILE_SHARE_READ | /* share_access */
3230 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3231 FILE_OPEN, /* create_disposition*/
3232 0, /* create_options */
3233 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3234 0, /* oplock_request */
3235 0, /* allocation_size */
3236 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3237 NULL, /* sd */
3238 NULL, /* ea_list */
3239 &streams[i], /* result */
3240 NULL); /* pinfo */
3241
3242 if (!NT_STATUS_IS_OK(status)) {
3243 DEBUG(10, ("Could not open stream %s: %s\n",
3244 smb_fname_str_dbg(smb_fname),
3245 nt_errstr(status)));
3246
3247 TALLOC_FREE(smb_fname);
3248 break;
3249 }
3250 TALLOC_FREE(smb_fname);
3251 }
3252
3253 /*
3254 * don't touch the variable "status" beyond this point :-)
3255 */
3256
3257 for (i -= 1 ; i >= 0; i--) {
3258 if (streams[i] == NULL) {
3259 continue;
3260 }
3261
3262 DEBUG(10, ("Closing stream # %d, %s\n", i,
3263 fsp_str_dbg(streams[i])));
3264 close_file(NULL, streams[i], NORMAL_CLOSE);
3265 }
3266
3267 fail:
3268 TALLOC_FREE(frame);
3269 return status;
3270 }
3271
3272 /*********************************************************************
3273 Create a default ACL by inheriting from the parent. If no inheritance
3274 from the parent available, don't set anything. This will leave the actual
3275 permissions the new file or directory already got from the filesystem
3276 as the NT ACL when read.
3277 *********************************************************************/
3278
3279 static NTSTATUS inherit_new_acl(files_struct *fsp)
3280 {
3281 TALLOC_CTX *ctx = talloc_tos();
3282 char *parent_name = NULL;
3283 struct security_descriptor *parent_desc = NULL;
3284 NTSTATUS status = NT_STATUS_OK;
3285 struct security_descriptor *psd = NULL;
3286 struct dom_sid *owner_sid = NULL;
3287 struct dom_sid *group_sid = NULL;
3288 uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
3289 bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
3290 bool inheritable_components = false;
3291 size_t size = 0;
3292
3293 if (!parent_dirname(ctx, fsp->fsp_name->base_name, &parent_name, NULL)) {
3294 return NT_STATUS_NO_MEMORY;
3295 }
3296
3297 status = SMB_VFS_GET_NT_ACL(fsp->conn,
3298 parent_name,
3299 (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
3300 &parent_desc);
3301 if (!NT_STATUS_IS_OK(status)) {
3302 return status;
3303 }
3304
3305 inheritable_components = sd_has_inheritable_components(parent_desc,
3306 fsp->is_directory);
3307
3308 if (!inheritable_components && !inherit_owner) {
3309 /* Nothing to inherit and not setting owner. */
3310 return NT_STATUS_OK;
3311 }
3312
3313 /* Create an inherited descriptor from the parent. */
3314
3315 if (DEBUGLEVEL >= 10) {
3316 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3317 fsp_str_dbg(fsp) ));
3318 NDR_PRINT_DEBUG(security_descriptor, parent_desc);
3319 }
3320
3321 /* Inherit from parent descriptor if "inherit owner" set. */
3322 if (inherit_owner) {
3323 owner_sid = parent_desc->owner_sid;
3324 group_sid = parent_desc->group_sid;
3325 }
3326
3327 if (owner_sid == NULL) {
3328 owner_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
3329 }
3330 if (group_sid == NULL) {
3331 group_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_GROUP_SID_INDEX];
3332 }
3333
3334 status = se_create_child_secdesc(ctx,
3335 &psd,
3336 &size,
3337 parent_desc,
3338 owner_sid,
3339 group_sid,
3340 fsp->is_directory);
3341 if (!NT_STATUS_IS_OK(status)) {
3342 return status;
3343 }
3344
3345 /* If inheritable_components == false,
3346 se_create_child_secdesc()
3347 creates a security desriptor with a NULL dacl
3348 entry, but with SEC_DESC_DACL_PRESENT. We need
3349 to remove that flag. */
3350
3351 if (!inheritable_components) {
3352 security_info_sent &= ~SECINFO_DACL;
3353 psd->type &= ~SEC_DESC_DACL_PRESENT;
3354 }
3355
3356 if (DEBUGLEVEL >= 10) {
3357 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3358 fsp_str_dbg(fsp) ));
3359 NDR_PRINT_DEBUG(security_descriptor, psd);
3360 }
3361
3362 if (inherit_owner) {
3363 /* We need to be root to force this. */
3364 become_root();
3365 }
3366 status = SMB_VFS_FSET_NT_ACL(fsp,
3367 security_info_sent,
3368 psd);
3369 if (inherit_owner) {
3370 unbecome_root();
3371 }
3372 return status;
3373 }
3374
3375 /*
3376 * Wrapper around open_file_ntcreate and open_directory
3377 */
3378
3379 static NTSTATUS create_file_unixpath(connection_struct *conn,
3380 struct smb_request *req,
3381 struct smb_filename *smb_fname,
3382 uint32_t access_mask,
3383 uint32_t share_access,
3384 uint32_t create_disposition,
3385 uint32_t create_options,
3386 uint32_t file_attributes,
3387 uint32_t oplock_request,
3388 uint64_t allocation_size,
3389 uint32_t private_flags,
3390 struct security_descriptor *sd,
3391 struct ea_list *ea_list,
3392
3393 files_struct **result,
3394 int *pinfo)
3395 {
3396 int info = FILE_WAS_OPENED;
3397 files_struct *base_fsp = NULL;
3398 files_struct *fsp = NULL;
3399 NTSTATUS status;
3400
3401 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3402 "file_attributes = 0x%x, share_access = 0x%x, "
3403 "create_disposition = 0x%x create_options = 0x%x "
3404 "oplock_request = 0x%x private_flags = 0x%x "
3405 "ea_list = 0x%p, sd = 0x%p, "
3406 "fname = %s\n",
3407 (unsigned int)access_mask,
3408 (unsigned int)file_attributes,
3409 (unsigned int)share_access,
3410 (unsigned int)create_disposition,
3411 (unsigned int)create_options,
3412 (unsigned int)oplock_request,
3413 (unsigned int)private_flags,
3414 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3415
3416 if (create_options & FILE_OPEN_BY_FILE_ID) {
3417 status = NT_STATUS_NOT_SUPPORTED;
3418 goto fail;
3419 }
3420
3421 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3422 status = NT_STATUS_INVALID_PARAMETER;
3423 goto fail;
3424 }
3425
3426 if (req == NULL) {
3427 oplock_request |= INTERNAL_OPEN_ONLY;
3428 }
3429
3430 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3431 && (access_mask & DELETE_ACCESS)
3432 && !is_ntfs_stream_smb_fname(smb_fname)) {
3433 /*
3434 * We can't open a file with DELETE access if any of the
3435 * streams is open without FILE_SHARE_DELETE
3436 */
3437 status = open_streams_for_delete(conn, smb_fname->base_name);
3438
3439 if (!NT_STATUS_IS_OK(status)) {
3440 goto fail;
3441 }
3442 }
3443
3444 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3445 !security_token_has_privilege(get_current_nttok(conn),
3446 SEC_PRIV_SECURITY)) {
3447 DEBUG(10, ("create_file_unixpath: open on %s "
3448 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3449 smb_fname_str_dbg(smb_fname)));
3450 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3451 goto fail;
3452 }
3453
3454 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3455 && is_ntfs_stream_smb_fname(smb_fname)
3456 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3457 uint32 base_create_disposition;
3458 struct smb_filename *smb_fname_base = NULL;
3459
3460 if (create_options & FILE_DIRECTORY_FILE) {
3461 status = NT_STATUS_NOT_A_DIRECTORY;
3462 goto fail;
3463 }
3464
3465 switch (create_disposition) {
3466 case FILE_OPEN:
3467 base_create_disposition = FILE_OPEN;
3468 break;
3469 default:
3470 base_create_disposition = FILE_OPEN_IF;
3471 break;
3472 }
3473
3474 /* Create an smb_filename with stream_name == NULL. */
3475 status = create_synthetic_smb_fname(talloc_tos(),
3476 smb_fname->base_name,
3477 NULL, NULL,
3478 &smb_fname_base);
3479 if (!NT_STATUS_IS_OK(status)) {
3480 goto fail;
3481 }
3482
3483 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3484 DEBUG(10, ("Unable to stat stream: %s\n",
3485 smb_fname_str_dbg(smb_fname_base)));
3486 }
3487
3488 /* Open the base file. */
3489 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3490 FILE_SHARE_READ
3491 | FILE_SHARE_WRITE
3492 | FILE_SHARE_DELETE,
3493 base_create_disposition,
3494 0, 0, 0, 0, 0, NULL, NULL,
3495 &base_fsp, NULL);
3496 TALLOC_FREE(smb_fname_base);
3497
3498 if (!NT_STATUS_IS_OK(status)) {
3499 DEBUG(10, ("create_file_unixpath for base %s failed: "
3500 "%s\n", smb_fname->base_name,
3501 nt_errstr(status)));
3502 goto fail;
3503 }
3504 /* we don't need to low level fd */
3505 fd_close(base_fsp);
3506 }
3507
3508 /*
3509 * If it's a request for a directory open, deal with it separately.
3510 */
3511
3512 if (create_options & FILE_DIRECTORY_FILE) {
3513
3514 if (create_options & FILE_NON_DIRECTORY_FILE) {
3515 status = NT_STATUS_INVALID_PARAMETER;
3516 goto fail;
3517 }
3518
3519 /* Can't open a temp directory. IFS kit test. */
3520 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3521 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3522 status = NT_STATUS_INVALID_PARAMETER;
3523 goto fail;
3524 }
3525
3526 /*
3527 * We will get a create directory here if the Win32
3528 * app specified a security descriptor in the
3529 * CreateDirectory() call.
3530 */
3531
3532 oplock_request = 0;
3533 status = open_directory(
3534 conn, req, smb_fname, access_mask, share_access,
3535 create_disposition, create_options, file_attributes,
3536 &info, &fsp);
3537 } else {
3538
3539 /*
3540 * Ordinary file case.
3541 */
3542
3543 status = file_new(req, conn, &fsp);
3544 if(!NT_STATUS_IS_OK(status)) {
3545 goto fail;
3546 }
3547
3548 status = fsp_set_smb_fname(fsp, smb_fname);
3549 if (!NT_STATUS_IS_OK(status)) {
3550 goto fail;
3551 }
3552
3553 /*
3554 * We're opening the stream element of a base_fsp
3555 * we already opened. Set up the base_fsp pointer.
3556 */
3557 if (base_fsp) {
3558 fsp->base_fsp = base_fsp;
3559 }
3560
3561 status = open_file_ntcreate(conn,
3562 req,
3563 access_mask,
3564 share_access,
3565 create_disposition,
3566 create_options,
3567 file_attributes,
3568 oplock_request,
3569 private_flags,
3570 &info,
3571 fsp);
3572
3573 if(!NT_STATUS_IS_OK(status)) {
3574 file_free(req, fsp);
3575 fsp = NULL;
3576 }
3577
3578 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3579
3580 /* A stream open never opens a directory */
3581
3582 if (base_fsp) {
3583 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3584 goto fail;
3585 }
3586
3587 /*
3588 * Fail the open if it was explicitly a non-directory
3589 * file.
3590 */
3591
3592 if (create_options & FILE_NON_DIRECTORY_FILE) {
3593 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3594 goto fail;
3595 }
3596
3597 oplock_request = 0;
3598 status = open_directory(
3599 conn, req, smb_fname, access_mask,
3600 share_access, create_disposition,
3601 create_options, file_attributes,
3602 &info, &fsp);
3603 }
3604 }
3605
3606 if (!NT_STATUS_IS_OK(status)) {
3607 goto fail;
3608 }
3609
3610 fsp->base_fsp = base_fsp;
3611
3612 if ((ea_list != NULL) &&
3613 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3614 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3615 if (!NT_STATUS_IS_OK(status)) {
3616 goto fail;
3617 }
3618 }
3619
3620 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3621 status = NT_STATUS_ACCESS_DENIED;
3622 goto fail;
3623 }
3624
3625 /* Save the requested allocation size. */
3626 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3627 if (allocation_size
3628 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3629 fsp->initial_allocation_size = smb_roundup(
3630 fsp->conn, allocation_size);
3631 if (fsp->is_directory) {
3632 /* Can't set allocation size on a directory. */
3633 status = NT_STATUS_ACCESS_DENIED;
3634 goto fail;
3635 }
3636 if (vfs_allocate_file_space(
3637 fsp, fsp->initial_allocation_size) == -1) {
3638 status = NT_STATUS_DISK_FULL;
3639 goto fail;
3640 }
3641 } else {
3642 fsp->initial_allocation_size = smb_roundup(
3643 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3644 }
3645 }
3646
3647 if ((info == FILE_WAS_CREATED) && lp_nt_acl_support(SNUM(conn)) &&
3648 fsp->base_fsp == NULL) {
3649 if (sd != NULL) {
3650 /*
3651 * According to the MS documentation, the only time the security
3652 * descriptor is applied to the opened file is iff we *created* the
3653 * file; an existing file stays the same.
3654 *
3655 * Also, it seems (from observation) that you can open the file with
3656 * any access mask but you can still write the sd. We need to override
3657 * the granted access before we call set_sd
3658 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3659 */
3660
3661 uint32_t sec_info_sent;
3662 uint32_t saved_access_mask = fsp->access_mask;
3663
3664 sec_info_sent = get_sec_info(sd);
3665
3666 fsp->access_mask = FILE_GENERIC_ALL;
3667
3668 /* Convert all the generic bits. */
3669 security_acl_map_generic(sd->dacl, &file_generic_mapping);
3670 security_acl_map_generic(sd->sacl, &file_generic_mapping);
3671
3672 if (sec_info_sent & (SECINFO_OWNER|
3673 SECINFO_GROUP|
3674 SECINFO_DACL|
3675 SECINFO_SACL)) {
3676 status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
3677 }
3678
3679 fsp->access_mask = saved_access_mask;
3680
3681 if (!NT_STATUS_IS_OK(status)) {
3682 goto fail;
3683 }
3684 } else if (lp_inherit_acls(SNUM(conn))) {
3685 /* Inherit from parent. Errors here are not fatal. */
3686 status = inherit_new_acl(fsp);
3687 if (!NT_STATUS_IS_OK(status)) {
3688 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3689 fsp_str_dbg(fsp),
3690 nt_errstr(status) ));
3691 }
3692 }
3693 }
3694
3695 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3696
3697 *result = fsp;
3698 if (pinfo != NULL) {
3699 *pinfo = info;
3700 }
3701
3702 smb_fname->st = fsp->fsp_name->st;
3703
3704 return NT_STATUS_OK;
3705
3706 fail:
3707 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3708
3709 if (fsp != NULL) {
3710 if (base_fsp && fsp->base_fsp == base_fsp) {
3711 /*
3712 * The close_file below will close
3713 * fsp->base_fsp.
3714 */
3715 base_fsp = NULL;
3716 }
3717 close_file(req, fsp, ERROR_CLOSE);
3718 fsp = NULL;
3719 }
3720 if (base_fsp != NULL) {
3721 close_file(req, base_fsp, ERROR_CLOSE);
3722 base_fsp = NULL;
3723 }
3724 return status;
3725 }
3726
3727 /*
3728 * Calculate the full path name given a relative fid.
3729 */
3730 NTSTATUS get_relative_fid_filename(connection_struct *conn,
3731 struct smb_request *req,
3732 uint16_t root_dir_fid,
3733 const struct smb_filename *smb_fname,
3734 struct smb_filename **smb_fname_out)
3735 {
3736 files_struct *dir_fsp;
3737 char *parent_fname = NULL;
3738 char *new_base_name = NULL;
3739 NTSTATUS status;
3740
3741 if (root_dir_fid == 0 || !smb_fname) {
3742 status = NT_STATUS_INTERNAL_ERROR;
3743 goto out;
3744 }
3745
3746 dir_fsp = file_fsp(req, root_dir_fid);
3747
3748 if (dir_fsp == NULL) {
3749 status = NT_STATUS_INVALID_HANDLE;
3750 goto out;
3751 }
3752
3753 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
3754 status = NT_STATUS_INVALID_HANDLE;
3755 goto out;
3756 }
3757
3758 if (!dir_fsp->is_directory) {
3759
3760 /*
3761 * Check to see if this is a mac fork of some kind.
3762 */
3763
3764 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
3765 is_ntfs_stream_smb_fname(smb_fname)) {
3766 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
3767 goto out;
3768 }
3769
3770 /*
3771 we need to handle the case when we get a
3772 relative open relative to a file and the
3773 pathname is blank - this is a reopen!
3774 (hint from demyn plantenberg)
3775 */
3776
3777 status = NT_STATUS_INVALID_HANDLE;
3778 goto out;
3779 }
3780
3781 if (ISDOT(dir_fsp->fsp_name->base_name)) {
3782 /*
3783 * We're at the toplevel dir, the final file name
3784 * must not contain ./, as this is filtered out
3785 * normally by srvstr_get_path and unix_convert
3786 * explicitly rejects paths containing ./.
3787 */
3788 parent_fname = talloc_strdup(talloc_tos(), "");
3789 if (parent_fname == NULL) {
3790 status = NT_STATUS_NO_MEMORY;
3791 goto out;
3792 }
3793 } else {
3794 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
3795
3796 /*
3797 * Copy in the base directory name.
3798 */
3799
3800 parent_fname = talloc_array(talloc_tos(), char,
3801 dir_name_len+2);
3802 if (parent_fname == NULL) {
3803 status = NT_STATUS_NO_MEMORY;
3804 goto out;
3805 }
3806 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
3807 dir_name_len+1);
3808
3809 /*
3810 * Ensure it ends in a '/'.
3811 * We used TALLOC_SIZE +2 to add space for the '/'.
3812 */
3813
3814 if(dir_name_len
3815 && (parent_fname[dir_name_len-1] != '\\')
3816 && (parent_fname[dir_name_len-1] != '/')) {
3817 parent_fname[dir_name_len] = '/';
3818 parent_fname[dir_name_len+1] = '\0';
3819 }
3820 }
3821
3822 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
3823 smb_fname->base_name);
3824 if (new_base_name == NULL) {
3825 status = NT_STATUS_NO_MEMORY;
3826 goto out;
3827 }
3828
3829 status = filename_convert(req,
3830 conn,
3831 req->flags2 & FLAGS2_DFS_PATHNAMES,
3832 new_base_name,
3833 0,
3834 NULL,
3835 smb_fname_out);
3836 if (!NT_STATUS_IS_OK(status)) {
3837 goto out;
3838 }
3839
3840 out:
3841 TALLOC_FREE(parent_fname);
3842 TALLOC_FREE(new_base_name);
3843 return status;
3844 }
3845
3846 NTSTATUS create_file_default(connection_struct *conn,
3847 struct smb_request *req,
3848 uint16_t root_dir_fid,
3849 struct smb_filename *smb_fname,
3850 uint32_t access_mask,
3851 uint32_t share_access,
3852 uint32_t create_disposition,
3853 uint32_t create_options,
3854 uint32_t file_attributes,
3855 uint32_t oplock_request,
3856 uint64_t allocation_size,
3857 uint32_t private_flags,
3858 struct security_descriptor *sd,
3859 struct ea_list *ea_list,
3860 files_struct **result,
3861 int *pinfo)
3862 {
3863 int info = FILE_WAS_OPENED;
3864 files_struct *fsp = NULL;
3865 NTSTATUS status;
3866 bool stream_name = false;
3867
3868 DEBUG(10,("create_file: access_mask = 0x%x "
3869 "file_attributes = 0x%x, share_access = 0x%x, "
3870 "create_disposition = 0x%x create_options = 0x%x "
3871 "oplock_request = 0x%x "
3872 "private_flags = 0x%x "
3873 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3874 "fname = %s\n",
3875 (unsigned int)access_mask,
3876 (unsigned int)file_attributes,
3877 (unsigned int)share_access,
3878 (unsigned int)create_disposition,
3879 (unsigned int)create_options,
3880 (unsigned int)oplock_request,
3881 (unsigned int)private_flags,
3882 (unsigned int)root_dir_fid,
3883 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3884
3885 /*
3886 * Calculate the filename from the root_dir_if if necessary.
3887 */
3888
3889 if (root_dir_fid != 0) {
3890 struct smb_filename *smb_fname_out = NULL;
3891 status = get_relative_fid_filename(conn, req, root_dir_fid,
3892 smb_fname, &smb_fname_out);
3893 if (!NT_STATUS_IS_OK(status)) {
3894 goto fail;
3895 }
3896 smb_fname = smb_fname_out;
3897 }
3898
3899 /*
3900 * Check to see if this is a mac fork of some kind.
3901 */
3902
3903 stream_name = is_ntfs_stream_smb_fname(smb_fname);
3904 if (stream_name) {
3905 enum FAKE_FILE_TYPE fake_file_type;
3906
3907 fake_file_type = is_fake_file(smb_fname);
3908
3909 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
3910
3911 /*
3912 * Here we go! support for changing the disk quotas
3913 * --metze
3914 *
3915 * We need to fake up to open this MAGIC QUOTA file
3916 * and return a valid FID.
3917 *
3918 * w2k close this file directly after openening xp
3919 * also tries a QUERY_FILE_INFO on the file and then
3920 * close it
3921 */
3922 status = open_fake_file(req, conn, req->vuid,
3923 fake_file_type, smb_fname,
3924 access_mask, &fsp);
3925 if (!NT_STATUS_IS_OK(status)) {
3926 goto fail;
3927 }
3928
3929 ZERO_STRUCT(smb_fname->st);
3930 goto done;
3931 }
3932
3933 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
3934 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
3935 goto fail;
3936 }
3937 }
3938
3939 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
3940 int ret;
3941 smb_fname->stream_name = NULL;
3942 /* We have to handle this error here. */
3943 if (create_options & FILE_DIRECTORY_FILE) {
3944 status = NT_STATUS_NOT_A_DIRECTORY;
3945 goto fail;
3946 }
3947 if (lp_posix_pathnames()) {
3948 ret = SMB_VFS_LSTAT(conn, smb_fname);
3949 } else {
3950 ret = SMB_VFS_STAT(conn, smb_fname);
3951 }
3952
3953 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
3954 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3955 goto fail;
3956 }
3957 }
3958
3959 status = create_file_unixpath(
3960 conn, req, smb_fname, access_mask, share_access,
3961 create_disposition, create_options, file_attributes,
3962 oplock_request, allocation_size, private_flags,
3963 sd, ea_list,
3964 &fsp, &info);
3965
3966 if (!NT_STATUS_IS_OK(status)) {
3967 goto fail;
3968 }
3969
3970 done:
3971 DEBUG(10, ("create_file: info=%d\n", info));
3972
3973 *result = fsp;
3974 if (pinfo != NULL) {
3975 *pinfo = info;
3976 }
3977 return NT_STATUS_OK;
3978
3979 fail:
3980 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
3981
3982 if (fsp != NULL) {
3983 close_file(req, fsp, ERROR_CLOSE);
3984 fsp = NULL;
3985 }
3986 return status;
3987 }
reg import