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docs: Fix a bogus )
[Samba.git] / source3 / modules / onefs_open.c
blob80f799ca6f6d1d0ee6af60718a1fd1c6c17e7779
1 /*
2 * Unix SMB/CIFS implementation.
3 *
4 * This file began with some code from source3/smbd/open.c and has been
5 * modified it work with ifs_createfile.
6 *
7 * ifs_createfile is a CIFS-specific syscall for opening/files and
8 * directories. It adds support for:
9 * - Full in-kernel access checks using a windows access_mask
10 * - Cluster-coherent share mode locks
11 * - Cluster-coherent oplocks
12 * - Streams
13 * - Setting security descriptors at create time
14 * - Setting dos_attributes at create time
15 *
16 * Copyright (C) Andrew Tridgell 1992-1998
17 * Copyright (C) Jeremy Allison 2001-2004
18 * Copyright (C) Volker Lendecke 2005
19 * Copyright (C) Tim Prouty, 2008
20 *
21 * This program is free software; you can redistribute it and/or modify
22 * it under the terms of the GNU General Public License as published by
23 * the Free Software Foundation; either version 3 of the License, or
24 * (at your option) any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with this program; if not, see <http://www.gnu.org/licenses/>.
33 */
34
35 #include "includes.h"
36 #include "smbd/smbd.h"
37 #include "onefs.h"
38 #include "onefs_config.h"
39 #include "oplock_onefs.h"
40 #include "smbd/globals.h"
41
42 extern const struct generic_mapping file_generic_mapping;
43
44 struct onefs_fsp_data {
45 uint64_t oplock_callback_id;
46 };
47
48 static NTSTATUS onefs_create_file_unixpath(connection_struct *conn,
49 struct smb_request *req,
50 struct smb_filename *smb_fname,
51 uint32_t access_mask,
52 uint32_t share_access,
53 uint32_t create_disposition,
54 uint32_t create_options,
55 uint32_t file_attributes,
56 uint32_t oplock_request,
57 uint64_t allocation_size,
58 uint32_t private_flags,
59 struct security_descriptor *sd,
60 struct ea_list *ea_list,
61 files_struct **result,
62 int *pinfo,
63 struct onefs_fsp_data *fsp_data);
64
65 /****************************************************************************
66 Open a file.
67 ****************************************************************************/
68
69 static NTSTATUS onefs_open_file(files_struct *fsp,
70 connection_struct *conn,
71 struct smb_request *req,
72 const char *parent_dir,
73 struct smb_filename *smb_fname,
74 int flags,
75 mode_t unx_mode,
76 uint32 access_mask,
77 uint32 open_access_mask,
78 int oplock_request,
79 uint64 id,
80 uint32 share_access,
81 uint32 create_options,
82 uint32_t new_dos_attributes,
83 struct security_descriptor *sd,
84 int *granted_oplock)
85 {
86 struct smb_filename *smb_fname_onefs = NULL;
87 NTSTATUS status = NT_STATUS_OK;
88 int accmode = (flags & O_ACCMODE);
89 int local_flags = flags;
90 bool file_existed = VALID_STAT(smb_fname->st);
91 const char *wild;
92 int base_fd = -1;
93
94 fsp->fh->fd = -1;
95 errno = EPERM;
96
97 /* Check permissions */
98
99 /*
100 * This code was changed after seeing a client open request
101 * containing the open mode of (DENY_WRITE/read-only) with
102 * the 'create if not exist' bit set. The previous code
103 * would fail to open the file read only on a read-only share
104 * as it was checking the flags parameter directly against O_RDONLY,
105 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
106 * JRA.
107 */
108
109 if (!CAN_WRITE(conn)) {
110 /* It's a read-only share - fail if we wanted to write. */
111 if(accmode != O_RDONLY) {
112 DEBUG(3, ("Permission denied opening %s\n",
113 smb_fname_str_dbg(smb_fname)));
114 return NT_STATUS_ACCESS_DENIED;
115 } else if(flags & O_CREAT) {
116 /* We don't want to write - but we must make sure that
117 O_CREAT doesn't create the file if we have write
118 access into the directory.
119 */
120 flags &= ~O_CREAT;
121 local_flags &= ~O_CREAT;
122 }
123 }
124
125 /*
126 * This little piece of insanity is inspired by the
127 * fact that an NT client can open a file for O_RDONLY,
128 * but set the create disposition to FILE_EXISTS_TRUNCATE.
129 * If the client *can* write to the file, then it expects to
130 * truncate the file, even though it is opening for readonly.
131 * Quicken uses this stupid trick in backup file creation...
132 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
133 * for helping track this one down. It didn't bite us in 2.0.x
134 * as we always opened files read-write in that release. JRA.
135 */
136
137 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
138 DEBUG(10,("onefs_open_file: truncate requested on read-only "
139 "open for file %s\n", smb_fname_str_dbg(smb_fname)));
140 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
141 }
142
143 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
144 /*
145 * We would block on opening a FIFO with no one else on the
146 * other end. Do what we used to do and add O_NONBLOCK to the
147 * open flags. JRA.
148 */
149
150 if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
151 local_flags |= O_NONBLOCK;
152 }
153 #endif
154
155 /* Don't create files with Microsoft wildcard characters. */
156 if (fsp->base_fsp) {
157 /*
158 * wildcard characters are allowed in stream names
159 * only test the basefilename
160 */
161 wild = fsp->base_fsp->fsp_name->base_name;
162 } else {
163 wild = smb_fname->base_name;
164 }
165 if ((local_flags & O_CREAT) && !file_existed &&
166 ms_has_wild(wild)) {
167 /*
168 * XXX: may need to remvoe this return...
169 *
170 * We dont think this check needs to exist. All it does is
171 * block creating files with Microsoft wildcards, which is
172 * fine if the creation originated from NFS or locally and
173 * then was copied via Samba.
174 */
175 DEBUG(1, ("onefs_open_file: creating file with wildcard: %s\n",
176 smb_fname_str_dbg(smb_fname)));
177 return NT_STATUS_OBJECT_NAME_INVALID;
178 }
179
180 /* Actually do the open */
181
182 #ifdef O_NOFOLLOW
183 /*
184 * Never follow symlinks on a POSIX client. The
185 * client should be doing this.
186 */
187
188 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
189 flags |= O_NOFOLLOW;
190 }
191 #endif
192 /* Setup a onefs-style smb_fname struct. */
193 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
194 &smb_fname_onefs);
195 if (!NT_STATUS_IS_OK(status)) {
196 return status;
197 }
198
199 /* If it's a stream pass in the base_fd */
200 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
201 is_ntfs_stream_smb_fname(smb_fname_onefs)) {
202 SMB_ASSERT(fsp->base_fsp);
203
204 DEBUG(10, ("Opening a stream: base=%s(%d), stream=%s\n",
205 smb_fname_onefs->base_name, fsp->base_fsp->fh->fd,
206 smb_fname_onefs->stream_name));
207
208 base_fd = fsp->base_fsp->fh->fd;
209 }
210
211 fsp->fh->fd = onefs_sys_create_file(conn,
212 base_fd,
213 smb_fname_onefs->stream_name != NULL ?
214 smb_fname_onefs->stream_name :
215 smb_fname_onefs->base_name,
216 access_mask,
217 open_access_mask,
218 share_access,
219 create_options,
220 flags,
221 unx_mode,
222 oplock_request,
223 id,
224 sd,
225 new_dos_attributes,
226 granted_oplock);
227 TALLOC_FREE(smb_fname_onefs);
228
229 if (fsp->fh->fd == -1) {
230 if (errno == EMFILE) {
231 static time_t last_warned = 0L;
232
233 if (time((time_t *) NULL) > last_warned) {
234 DEBUG(0, ("Too many open files, unable "
235 "to open more! smbd's max "
236 "open files = %d, also check "
237 "sysctl kern.maxfiles and "
238 "sysctl kern.maxfilesperproc\n",
239 lp_max_open_files()));
240 last_warned = time((time_t *) NULL);
241 }
242 }
243
244 status = map_nt_error_from_unix(errno);
245 DEBUG(3, ("Error opening file %s (%s) (local_flags=%d) "
246 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
247 strerror(errno), local_flags, flags));
248 return status;
249 }
250
251 if ((local_flags & O_CREAT) && !file_existed) {
252
253 /* Inherit the ACL if required */
254 if (lp_inherit_perms(SNUM(conn))) {
255 inherit_access_posix_acl(conn, parent_dir,
256 smb_fname->base_name, unx_mode);
257 }
258
259 /* Change the owner if required. */
260 if (lp_inherit_owner(SNUM(conn))) {
261 change_file_owner_to_parent(conn, parent_dir,
262 fsp);
263 }
264
265 notify_fname(conn, NOTIFY_ACTION_ADDED,
266 FILE_NOTIFY_CHANGE_FILE_NAME, smb_fname->base_name);
267 }
268
269 if (!file_existed) {
270 int ret;
271
272 if (fsp->fh->fd == -1) {
273 ret = SMB_VFS_STAT(conn, smb_fname);
274 } else {
275 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
276 /* If we have an fd, this stat should succeed. */
277 if (ret == -1) {
278 DEBUG(0, ("Error doing fstat on open file %s "
279 "(%s)\n",
280 smb_fname_str_dbg(smb_fname),
281 strerror(errno) ));
282 }
283 }
284
285 /* For a non-io open, this stat failing means file not found. JRA */
286 if (ret == -1) {
287 status = map_nt_error_from_unix(errno);
288 fd_close(fsp);
289 return status;
290 }
291 }
292
293 /*
294 * POSIX allows read-only opens of directories. We don't
295 * want to do this (we use a different code path for this)
296 * so catch a directory open and return an EISDIR. JRA.
297 */
298
299 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
300 fd_close(fsp);
301 errno = EISDIR;
302 return NT_STATUS_FILE_IS_A_DIRECTORY;
303 }
304
305 fsp->mode = smb_fname->st.st_ex_mode;
306 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
307 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
308 fsp->file_pid = req ? req->smbpid : 0;
309 fsp->can_lock = True;
310 fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
311 if (!CAN_WRITE(conn)) {
312 fsp->can_write = False;
313 } else {
314 fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
315 True : False;
316 }
317 fsp->print_file = NULL;
318 fsp->modified = False;
319 fsp->sent_oplock_break = NO_BREAK_SENT;
320 fsp->is_directory = False;
321 if (conn->aio_write_behind_list &&
322 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
323 conn->case_sensitive)) {
324 fsp->aio_write_behind = True;
325 }
326
327 fsp->wcp = NULL; /* Write cache pointer. */
328
329 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
330 conn->session_info->unix_name,
331 smb_fname_str_dbg(smb_fname),
332 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
333 conn->num_files_open));
334
335 errno = 0;
336 return NT_STATUS_OK;
337 }
338
339 /****************************************************************************
340 Handle the 1 second delay in returning a SHARING_VIOLATION error.
341 ****************************************************************************/
342
343 static void defer_open(struct share_mode_lock *lck,
344 struct timeval request_time,
345 struct timeval timeout,
346 struct smb_request *req,
347 struct deferred_open_record *state)
348 {
349 int i;
350
351 /* Paranoia check */
352
353 for (i=0; i<lck->num_share_modes; i++) {
354 struct share_mode_entry *e = &lck->share_modes[i];
355
356 if (!is_deferred_open_entry(e)) {
357 continue;
358 }
359
360 if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
361 DEBUG(0, ("Trying to defer an already deferred "
362 "request: mid=%llu, exiting\n",
363 (unsigned long long)req->mid));
364 exit_server("attempt to defer a deferred request");
365 }
366 }
367
368 /* End paranoia check */
369
370 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
371 "open entry for mid %llu\n",
372 (unsigned int)request_time.tv_sec,
373 (unsigned int)request_time.tv_usec,
374 (unsigned long long)req->mid));
375
376 if (!push_deferred_open_message_smb(req, request_time, timeout,
377 state->id, (char *)state, sizeof(*state))) {
378 exit_server("push_deferred_open_message_smb failed");
379 }
380 add_deferred_open(lck, req->mid, request_time, state->id);
381 }
382
383 static void schedule_defer_open(struct share_mode_lock *lck,
384 struct timeval request_time,
385 struct smb_request *req)
386 {
387 struct deferred_open_record state;
388
389 /* This is a relative time, added to the absolute
390 request_time value to get the absolute timeout time.
391 Note that if this is the second or greater time we enter
392 this codepath for this particular request mid then
393 request_time is left as the absolute time of the *first*
394 time this request mid was processed. This is what allows
395 the request to eventually time out. */
396
397 struct timeval timeout;
398
399 /* Normally the smbd we asked should respond within
400 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
401 * the client did, give twice the timeout as a safety
402 * measure here in case the other smbd is stuck
403 * somewhere else. */
404
405 /*
406 * On OneFS, the kernel will always send an oplock_revoked message
407 * before this timeout is hit.
408 */
409 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*10, 0);
410
411 /* Nothing actually uses state.delayed_for_oplocks
412 but it's handy to differentiate in debug messages
413 between a 30 second delay due to oplock break, and
414 a 1 second delay for share mode conflicts. */
415
416 state.delayed_for_oplocks = True;
417 state.failed = false;
418 state.id = lck->id;
419
420 if (!request_timed_out(request_time, timeout)) {
421 defer_open(lck, request_time, timeout, req, &state);
422 } else {
423 /* A delayed-for-oplocks deferred open timing out should only
424 * happen if there is a bug or extreme load, since we set the
425 * timeout to 300 seconds. */
426 DEBUG(0, ("Deferred open timeout! request_time=%d.%d, "
427 "mid=%d\n", request_time.tv_sec, request_time.tv_usec,
428 req->mid));
429 }
430 }
431
432 /****************************************************************************
433 Open a file with a share mode. Passed in an already created files_struct.
434 ****************************************************************************/
435 NTSTATUS onefs_open_file_ntcreate(connection_struct *conn,
436 struct smb_request *req,
437 struct smb_filename *smb_fname,
438 uint32 access_mask,
439 uint32 share_access,
440 uint32 create_disposition,
441 uint32 create_options,
442 uint32 new_dos_attributes,
443 int oplock_request,
444 uint32_t private_flags,
445 struct security_descriptor *sd,
446 files_struct *fsp,
447 int *pinfo,
448 struct onefs_fsp_data *fsp_data)
449 {
450 int flags=0;
451 int flags2=0;
452 bool file_existed = VALID_STAT(smb_fname->st);
453 bool def_acl = False;
454 bool posix_open = False;
455 bool new_file_created = False;
456 bool clear_ads = False;
457 struct file_id id;
458 mode_t new_unx_mode = (mode_t)0;
459 mode_t unx_mode = (mode_t)0;
460 int info;
461 uint32 existing_dos_attributes = 0;
462 struct timeval request_time = timeval_zero();
463 struct share_mode_lock *lck = NULL;
464 uint32 open_access_mask = access_mask;
465 NTSTATUS status;
466 int ret_flock;
467 char *parent_dir;
468 int granted_oplock;
469 uint64_t oplock_callback_id = 0;
470 uint32 createfile_attributes = 0;
471
472 ZERO_STRUCT(id);
473
474 if (conn->printer) {
475 /*
476 * Printers are handled completely differently.
477 * Most of the passed parameters are ignored.
478 */
479
480 if (pinfo) {
481 *pinfo = FILE_WAS_CREATED;
482 }
483
484 DEBUG(10, ("onefs_open_file_ntcreate: printer open fname=%s\n",
485 smb_fname_str_dbg(smb_fname)));
486
487 return print_spool_open(fsp, smb_fname->base_name,
488 req->vuid);
489 }
490
491 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
492 NULL)) {
493 return NT_STATUS_NO_MEMORY;
494 }
495
496 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
497 posix_open = True;
498 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
499 new_dos_attributes = 0;
500 } else {
501 /* We add aARCH to this as this mode is only used if the file is
502 * created new. */
503 unx_mode = unix_mode(conn, new_dos_attributes | aARCH,
504 smb_fname, parent_dir);
505 }
506
507 DEBUG(10,("onefs_open_file_ntcreate: fname=%s, dos_attrs=0x%x "
508 "access_mask=0x%x share_access=0x%x "
509 "create_disposition = 0x%x create_options=0x%x "
510 "unix mode=0%o oplock_request=0x%x\n",
511 smb_fname_str_dbg(smb_fname), new_dos_attributes,
512 access_mask, share_access, create_disposition,
513 create_options, unx_mode, oplock_request));
514
515 /*
516 * Any non-stat-only open has the potential to contend oplocks, which
517 * means to avoid blocking in the kernel (which is unacceptable), the
518 * open must be deferred. In order to defer opens, req must not be
519 * NULL. The known cases of calling with a NULL req:
520 *
521 * 1. Open the base file of a stream: Always done stat-only
522 *
523 * 2. open_file_fchmod(), which is called from 3 places:
524 * A. try_chown: Posix acls only. Never called on onefs.
525 * B. set_ea_dos_attributes: Can't be called from onefs, because
526 * SMB_VFS_SETXATTR return ENOSYS.
527 * C. file_set_dos_mode: This would only happen if the "dos
528 * filemode" smb.conf parameter is set to yes. We ship with
529 * it off, but if a customer were to turn it on it would be
530 * bad.
531 */
532 if (req == NULL && !is_stat_open(access_mask) &&
533 !is_ntfs_stream_smb_fname(smb_fname)) {
534 smb_panic("NULL req on a non-stat-open!");
535 }
536
537 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
538 DEBUG(0, ("No smb request but not an internal only open!\n"));
539 return NT_STATUS_INTERNAL_ERROR;
540 }
541
542 /*
543 * Only non-internal opens can be deferred at all
544 */
545
546 if (req) {
547 void *ptr;
548 if (get_deferred_open_message_state(req,
549 &request_time,
550 &ptr)) {
551 struct deferred_open_record *state = (struct deferred_open_record *)ptr;
552
553 /* Remember the absolute time of the original
554 request with this mid. We'll use it later to
555 see if this has timed out. */
556
557 /* Remove the deferred open entry under lock. */
558 remove_deferred_open_entry(state->id, req->mid);
559
560 /* Ensure we don't reprocess this message. */
561 remove_deferred_open_message_smb(req->mid);
562
563 /*
564 * When receiving a semlock_async_failure message, the
565 * deferred open will be marked as "failed". Returning
566 * INTERNAL_ERROR.
567 */
568 if (state->failed) {
569 DEBUG(0, ("onefs_open_file_ntcreate: "
570 "semlock_async_failure detected!\n"));
571 return NT_STATUS_INTERNAL_ERROR;
572 }
573 }
574 }
575
576 status = check_name(conn, smb_fname->base_name);
577 if (!NT_STATUS_IS_OK(status)) {
578 return status;
579 }
580
581 if (!posix_open) {
582 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
583 if (file_existed) {
584 existing_dos_attributes = dos_mode(conn, smb_fname);
585 }
586 }
587
588 /* Setup dos_attributes to be set by ifs_createfile */
589 if (lp_store_dos_attributes(SNUM(conn))) {
590 createfile_attributes = (new_dos_attributes | aARCH) &
591 ~(FILE_ATTRIBUTE_NONINDEXED | FILE_ATTRIBUTE_COMPRESSED);
592 }
593
594 /* Ignore oplock requests if oplocks are disabled. */
595 if (!lp_oplocks(SNUM(conn)) ||
596 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
597 /* Mask off everything except the private Samba bits. */
598 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
599 }
600
601 /* this is for OS/2 long file names - say we don't support them */
602 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
603 /* OS/2 Workplace shell fix may be main code stream in a later
604 * release. */
605 DEBUG(5,("onefs_open_file_ntcreate: OS/2 long filenames are "
606 "not supported.\n"));
607 if (use_nt_status()) {
608 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
609 }
610 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
611 }
612
613 switch( create_disposition ) {
614 /*
615 * Currently we're using FILE_SUPERSEDE as the same as
616 * FILE_OVERWRITE_IF but they really are
617 * different. FILE_SUPERSEDE deletes an existing file
618 * (requiring delete access) then recreates it.
619 */
620 case FILE_SUPERSEDE:
621 /**
622 * @todo: Clear all file attributes?
623 * http://www.osronline.com/article.cfm?article=302
624 * create if not exist, trunc if exist
625 *
626 * If file exists replace/overwrite. If file doesn't
627 * exist create.
628 */
629 flags2 |= (O_CREAT | O_TRUNC);
630 clear_ads = true;
631 break;
632
633 case FILE_OVERWRITE_IF:
634 /* If file exists replace/overwrite. If file doesn't
635 * exist create. */
636 flags2 |= (O_CREAT | O_TRUNC);
637 clear_ads = true;
638 break;
639
640 case FILE_OPEN:
641 /* If file exists open. If file doesn't exist error. */
642 if (!file_existed) {
643 DEBUG(5,("onefs_open_file_ntcreate: FILE_OPEN "
644 "requested for file %s and file "
645 "doesn't exist.\n",
646 smb_fname_str_dbg(smb_fname)));
647 errno = ENOENT;
648 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
649 }
650 break;
651
652 case FILE_OVERWRITE:
653 /* If file exists overwrite. If file doesn't exist
654 * error. */
655 if (!file_existed) {
656 DEBUG(5, ("onefs_open_file_ntcreate: "
657 "FILE_OVERWRITE requested for file "
658 "%s and file doesn't exist.\n",
659 smb_fname_str_dbg(smb_fname)));
660 errno = ENOENT;
661 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
662 }
663 flags2 |= O_TRUNC;
664 clear_ads = true;
665 break;
666
667 case FILE_CREATE:
668 /* If file exists error. If file doesn't exist
669 * create. */
670 if (file_existed) {
671 DEBUG(5, ("onefs_open_file_ntcreate: "
672 "FILE_CREATE requested for file %s "
673 "and file already exists.\n",
674 smb_fname_str_dbg(smb_fname)));
675 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
676 errno = EISDIR;
677 } else {
678 errno = EEXIST;
679 }
680 return map_nt_error_from_unix(errno);
681 }
682 flags2 |= (O_CREAT|O_EXCL);
683 break;
684
685 case FILE_OPEN_IF:
686 /* If file exists open. If file doesn't exist
687 * create. */
688 flags2 |= O_CREAT;
689 break;
690
691 default:
692 return NT_STATUS_INVALID_PARAMETER;
693 }
694
695 /* Match attributes on file exists and overwrite. */
696 if (!posix_open && file_existed &&
697 ((create_disposition == FILE_OVERWRITE) ||
698 (create_disposition == FILE_OVERWRITE_IF))) {
699 if (!open_match_attributes(conn, existing_dos_attributes,
700 new_dos_attributes,
701 smb_fname->st.st_ex_mode,
702 unx_mode, &new_unx_mode)) {
703 DEBUG(5, ("onefs_open_file_ntcreate: attributes "
704 "missmatch for file %s (%x %x) (0%o, 0%o)\n",
705 smb_fname_str_dbg(smb_fname),
706 existing_dos_attributes,
707 new_dos_attributes,
708 (unsigned int)smb_fname->st.st_ex_mode,
709 (unsigned int)unx_mode ));
710 errno = EACCES;
711 return NT_STATUS_ACCESS_DENIED;
712 }
713 }
714
715 /*
716 * OneFS understands MAXIMUM_ALLOWED_ACCESS, so only hack the
717 * access_mask, but leave the MAA for the actual open in
718 * open_access_mask.
719 */
720 open_access_mask = access_mask;
721 if (open_access_mask & MAXIMUM_ALLOWED_ACCESS) {
722 access_mask |= FILE_GENERIC_ALL;
723 }
724
725 /* Convert GENERIC bits to specific bits. */
726 se_map_generic(&access_mask, &file_generic_mapping);
727 se_map_generic(&open_access_mask, &file_generic_mapping);
728
729 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
730 /* This will cause oplock breaks. */
731 open_access_mask |= FILE_WRITE_DATA;
732 }
733
734 DEBUG(10, ("onefs_open_file_ntcreate: fname=%s, after mapping "
735 "open_access_mask=%#x, access_mask=0x%x\n",
736 smb_fname_str_dbg(smb_fname), open_access_mask,
737 access_mask));
738
739 /*
740 * Note that we ignore the append flag as append does not
741 * mean the same thing under DOS and Unix.
742 */
743
744 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
745 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
746
747 /*
748 * DENY_DOS opens are always underlying read-write on the
749 * file handle, no matter what the requested access mask
750 * says. Stock samba just sets the flags, but since
751 * ifs_createfile uses the access_mask, it must be updated as
752 * well. This allows BASE-DENY* to pass.
753 */
754 if (create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
755
756 DEBUG(10,("onefs_open_file_ntcreate: deny_dos: "
757 "Adding O_RDWR to flags "
758 "(0x%x) and some READ bits to "
759 "open_access_mask (0x%x)\n",
760 flags, open_access_mask));
761
762 flags = O_RDWR;
763 open_access_mask |= (FILE_READ_ATTRIBUTES |
764 FILE_READ_DATA | FILE_READ_EA | FILE_EXECUTE);
765
766 } else if (access_mask & (FILE_READ_ATTRIBUTES |
767 FILE_READ_DATA |
768 FILE_READ_EA |
769 FILE_EXECUTE)) {
770 flags = O_RDWR;
771 } else {
772 flags = O_WRONLY;
773 }
774 } else {
775 flags = O_RDONLY;
776 }
777
778 /* Currently we only look at FILE_WRITE_THROUGH for create options. */
779 #if defined(O_SYNC)
780 if ((create_options & FILE_WRITE_THROUGH) &&
781 lp_strict_sync(SNUM(conn))) {
782 flags2 |= O_SYNC;
783 }
784 #endif /* O_SYNC */
785
786 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
787 flags2 |= O_APPEND;
788 }
789
790 if (!posix_open && !CAN_WRITE(conn)) {
791 /*
792 * We should really return a permission denied error if either
793 * O_CREAT or O_TRUNC are set, but for compatibility with
794 * older versions of Samba we just AND them out.
795 */
796 flags2 &= ~(O_CREAT|O_TRUNC);
797
798 /* Deny DELETE_ACCESS explicitly if the share is read only. */
799 if (access_mask & DELETE_ACCESS) {
800 return map_nt_error_from_unix(EACCES);
801 }
802 }
803
804 /* Ensure we can't write on a read-only share or file. */
805 if (flags != O_RDONLY && file_existed &&
806 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
807 DEBUG(5, ("onefs_open_file_ntcreate: write access requested "
808 "for file %s on read only %s\n",
809 smb_fname_str_dbg(smb_fname),
810 !CAN_WRITE(conn) ? "share" : "file" ));
811 errno = EACCES;
812 return NT_STATUS_ACCESS_DENIED;
813 }
814
815 DEBUG(10, ("fsp = %p\n", fsp));
816
817 fsp->share_access = share_access;
818 fsp->fh->private_options = private_flags;
819 fsp->access_mask = open_access_mask; /* We change this to the
820 * requested access_mask after
821 * the open is done. */
822 fsp->posix_open = posix_open;
823
824 /* Ensure no SAMBA_PRIVATE bits can be set. */
825 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
826
827 if (timeval_is_zero(&request_time)) {
828 request_time = fsp->open_time;
829 }
830
831 if (file_existed) {
832 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
833 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
834
835 lck = get_share_mode_lock(talloc_tos(), id,
836 conn->connectpath,
837 smb_fname, &old_write_time);
838
839 if (lck == NULL) {
840 DEBUG(0, ("Could not get share mode lock\n"));
841 return NT_STATUS_SHARING_VIOLATION;
842 }
843
844 if (lck->delete_on_close) {
845 /* DELETE_PENDING is not deferred for a second */
846 TALLOC_FREE(lck);
847 return NT_STATUS_DELETE_PENDING;
848 }
849 }
850
851 SMB_ASSERT(!file_existed || (lck != NULL));
852
853 /*
854 * Ensure we pay attention to default ACLs on directories. May be
855 * neccessary depending on ACL policies.
856 */
857 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
858 (def_acl = directory_has_default_acl(conn, parent_dir))) {
859 unx_mode = 0777;
860 }
861
862 DEBUG(4,("calling onefs_open_file with flags=0x%X flags2=0x%X "
863 "mode=0%o, access_mask = 0x%x, open_access_mask = 0x%x\n",
864 (unsigned int)flags, (unsigned int)flags2,
865 (unsigned int)unx_mode, (unsigned int)access_mask,
866 (unsigned int)open_access_mask));
867
868 /*
869 * Since the open is guaranteed to be stat only if req == NULL, a
870 * callback record is only needed if req != NULL.
871 */
872 if (req) {
873 SMB_ASSERT(fsp_data);
874 oplock_callback_id = onefs_oplock_wait_record(req->mid);
875 if (oplock_callback_id == 0) {
876 return NT_STATUS_NO_MEMORY;
877 }
878 } else {
879 /*
880 * It is also already asserted it's either a stream or a
881 * stat-only open at this point.
882 */
883 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
884
885 /* The kernel and Samba's version of stat-only differs
886 * slightly: The kernel doesn't think its stat-only if we're
887 * truncating. We'd better have a req in order to defer the
888 * open. */
889 SMB_ASSERT(!((flags|flags2) & O_TRUNC));
890 }
891
892 /* Do the open. */
893 status = onefs_open_file(fsp,
894 conn,
895 req,
896 parent_dir,
897 smb_fname,
898 flags|flags2,
899 unx_mode,
900 access_mask,
901 open_access_mask,
902 fsp->oplock_type,
903 oplock_callback_id,
904 share_access,
905 create_options,
906 createfile_attributes,
907 sd,
908 &granted_oplock);
909
910 if (!NT_STATUS_IS_OK(status)) {
911
912 /* OneFS Oplock Handling */
913 if (errno == EINPROGRESS) {
914
915 /* If we get EINPROGRESS, the kernel will send us an
916 * asynchronous semlock event back. Ensure we can defer
917 * the open, by asserting req. */
918 SMB_ASSERT(req);
919
920 if (lck == NULL) {
921 /*
922 * We hit the race that when we did the stat
923 * on the file it did not exist, and someone
924 * has created it in between the stat and the
925 * open_file() call. Defer our open waiting,
926 * to break the oplock of the first opener.
927 */
928
929 struct timespec old_write_time;
930
931 DEBUG(3, ("Someone created file %s with an "
932 "oplock after we looked: Retrying\n",
933 smb_fname_str_dbg(smb_fname)));
934 /*
935 * We hit the race that when we did the stat
936 * on the file it did not exist, and someone
937 * has created it in between the stat and the
938 * open_file() call. Just retry immediately.
939 */
940 id = vfs_file_id_from_sbuf(conn,
941 &smb_fname->st);
942 if (!(lck = get_share_mode_lock(talloc_tos(),
943 id, conn->connectpath, smb_fname,
944 &old_write_time))) {
945 /*
946 * Emergency exit
947 */
948 DEBUG(0, ("onefs_open_file_ntcreate: "
949 "Could not get share mode "
950 "lock for %s\n",
951 smb_fname_str_dbg(smb_fname)));
952 status = NT_STATUS_SHARING_VIOLATION;
953
954 /* XXXZLK: This will cause us to get a
955 * semlock event when we aren't
956 * expecting one. */
957 goto cleanup_destroy;
958 }
959
960 schedule_defer_open(lck, request_time, req);
961 goto cleanup;
962 }
963 /* Waiting for an oplock */
964 DEBUG(5,("Async createfile because a client has an "
965 "oplock on %s\n",
966 smb_fname_str_dbg(smb_fname)));
967
968 SMB_ASSERT(req);
969 schedule_defer_open(lck, request_time, req);
970 goto cleanup;
971 }
972
973 /* Check for a sharing violation */
974 if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
975 uint32 can_access_mask;
976 bool can_access = True;
977
978 /* If we raced on open we may not have a valid file_id
979 * or stat buf. Get them again. */
980 if (SMB_VFS_STAT(conn, fname, psbuf) == -1) {
981 DEBUG(0,("Error doing stat on file %s "
982 "(%s)\n", fname, strerror(errno)));
983 status = NT_STATUS_SHARING_VIOLATION;
984 goto cleanup_destroy;
985 }
986 id = vfs_file_id_from_sbuf(conn, psbuf);
987
988 /* Check if this can be done with the deny_dos and fcb
989 * calls. */
990
991 /* Try to find dup fsp if possible. */
992 if (private_flags &
993 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
994 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
995
996 if (req == NULL) {
997 DEBUG(0, ("DOS open without an SMB "
998 "request!\n"));
999 status = NT_STATUS_INTERNAL_ERROR;
1000 goto cleanup_destroy;
1001 }
1002
1003 /* Use the client requested access mask here,
1004 * not the one we open with. */
1005 status = fcb_or_dos_open(req,
1006 conn,
1007 fsp,
1008 smb_fname,
1009 id,
1010 req->smbpid,
1011 req->vuid,
1012 access_mask,
1013 share_access,
1014 create_options);
1015
1016 if (NT_STATUS_IS_OK(status)) {
1017 if (pinfo) {
1018 *pinfo = FILE_WAS_OPENED;
1019 }
1020 status = NT_STATUS_OK;
1021 goto cleanup;
1022 }
1023 }
1024
1025 /*
1026 * This next line is a subtlety we need for
1027 * MS-Access. If a file open will fail due to share
1028 * permissions and also for security (access) reasons,
1029 * we need to return the access failed error, not the
1030 * share error. We can't open the file due to kernel
1031 * oplock deadlock (it's possible we failed above on
1032 * the open_mode_check()) so use a userspace check.
1033 */
1034
1035 if (flags & O_RDWR) {
1036 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
1037 } else if (flags & O_WRONLY) {
1038 can_access_mask = FILE_WRITE_DATA;
1039 } else {
1040 can_access_mask = FILE_READ_DATA;
1041 }
1042
1043 if (((can_access_mask & FILE_WRITE_DATA) &&
1044 !CAN_WRITE(conn)) ||
1045 !can_access_file_data(conn, smb_fname,
1046 can_access_mask)) {
1047 can_access = False;
1048 }
1049
1050 /*
1051 * If we're returning a share violation, ensure we
1052 * cope with the braindead 1 second delay.
1053 */
1054 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
1055 lp_defer_sharing_violations()) {
1056 struct timeval timeout;
1057 struct deferred_open_record state;
1058 int timeout_usecs;
1059
1060 /* this is a hack to speed up torture tests
1061 in 'make test' */
1062 timeout_usecs = lp_parm_int(SNUM(conn),
1063 "smbd","sharedelay",
1064 SHARING_VIOLATION_USEC_WAIT);
1065
1066 /* This is a relative time, added to the
1067 absolute request_time value to get the
1068 absolute timeout time. Note that if this
1069 is the second or greater time we enter this
1070 codepath for this particular request mid
1071 then request_time is left as the absolute
1072 time of the *first* time this request mid
1073 was processed. This is what allows the
1074 request to eventually time out. */
1075
1076 timeout = timeval_set(0, timeout_usecs);
1077
1078 /* Nothing actually uses
1079 state.delayed_for_oplocks but it's handy to
1080 differentiate in debug messages between a
1081 30 second delay due to oplock break, and a
1082 1 second delay for share mode conflicts. */
1083
1084 state.delayed_for_oplocks = False;
1085 state.id = id;
1086 state.failed = false;
1087
1088 /*
1089 * We hit the race that when we did the stat
1090 * on the file it did not exist, and someone
1091 * has created it in between the stat and the
1092 * open_file() call. Retrieve the share_mode
1093 * lock on the newly opened file so we can
1094 * defer our request.
1095 */
1096 if (lck == NULL) {
1097 struct timespec old_write_time;
1098 old_write_time = get_mtimespec(psbuf);
1099
1100 lck = get_share_mode_lock(talloc_tos(),
1101 id, conn->connectpath, fname,
1102 &old_write_time);
1103 if (lck == NULL) {
1104 DEBUG(0,
1105 ("onefs_open_file_ntcreate:"
1106 " Could not get share "
1107 "mode lock for %s\n",
1108 fname));
1109 /* This will cause us to return
1110 * immediately skipping the
1111 * the 1 second delay, which
1112 * isn't a big deal */
1113 status = NT_STATUS_SHARING_VIOLATION;
1114 goto cleanup_destroy;
1115 }
1116 }
1117
1118 if ((req != NULL) &&
1119 !request_timed_out(request_time, timeout))
1120 {
1121 defer_open(lck, request_time, timeout,
1122 req, &state);
1123 }
1124 }
1125
1126 if (can_access) {
1127 /*
1128 * We have detected a sharing violation here
1129 * so return the correct error code
1130 */
1131 status = NT_STATUS_SHARING_VIOLATION;
1132 } else {
1133 status = NT_STATUS_ACCESS_DENIED;
1134 }
1135
1136 goto cleanup_destroy;
1137 }
1138
1139 /*
1140 * Normal error, for example EACCES
1141 */
1142 cleanup_destroy:
1143 if (oplock_callback_id != 0) {
1144 destroy_onefs_callback_record(oplock_callback_id);
1145 }
1146 cleanup:
1147 TALLOC_FREE(lck);
1148 return status;
1149 }
1150
1151 fsp->oplock_type = granted_oplock;
1152
1153 if (oplock_callback_id != 0) {
1154 onefs_set_oplock_callback(oplock_callback_id, fsp);
1155 fsp_data->oplock_callback_id = oplock_callback_id;
1156 } else {
1157 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
1158 }
1159
1160 if (!file_existed) {
1161 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
1162 /*
1163 * Deal with the race condition where two smbd's detect the
1164 * file doesn't exist and do the create at the same time. One
1165 * of them will win and set a share mode, the other (ie. this
1166 * one) should check if the requested share mode for this
1167 * create is allowed.
1168 */
1169
1170 /*
1171 * Now the file exists and fsp is successfully opened,
1172 * fsp->file_id is valid and should replace the
1173 * dev=0, inode=0 from a non existent file. Spotted by
1174 * Nadav Danieli <nadavd@exanet.com>. JRA.
1175 */
1176
1177 id = fsp->file_id;
1178
1179 lck = get_share_mode_lock(talloc_tos(), id,
1180 conn->connectpath,
1181 smb_fname, &old_write_time);
1182
1183 if (lck == NULL) {
1184 DEBUG(0, ("onefs_open_file_ntcreate: Could not get "
1185 "share mode lock for %s\n",
1186 smb_fname_str_dbg(smb_fname)));
1187 fd_close(fsp);
1188 return NT_STATUS_SHARING_VIOLATION;
1189 }
1190
1191 if (lck->delete_on_close) {
1192 status = NT_STATUS_DELETE_PENDING;
1193 }
1194
1195 if (!NT_STATUS_IS_OK(status)) {
1196 struct deferred_open_record state;
1197
1198 fd_close(fsp);
1199
1200 state.delayed_for_oplocks = False;
1201 state.id = id;
1202
1203 /* Do it all over again immediately. In the second
1204 * round we will find that the file existed and handle
1205 * the DELETE_PENDING and FCB cases correctly. No need
1206 * to duplicate the code here. Essentially this is a
1207 * "goto top of this function", but don't tell
1208 * anybody... */
1209
1210 if (req != NULL) {
1211 defer_open(lck, request_time, timeval_zero(),
1212 req, &state);
1213 }
1214 TALLOC_FREE(lck);
1215 return status;
1216 }
1217
1218 /*
1219 * We exit this block with the share entry *locked*.....
1220 */
1221
1222 }
1223
1224 SMB_ASSERT(lck != NULL);
1225
1226 /* Delete streams if create_disposition requires it */
1227 if (file_existed && clear_ads &&
1228 !is_ntfs_stream_smb_fname(smb_fname)) {
1229 status = delete_all_streams(conn, smb_fname->base_name);
1230 if (!NT_STATUS_IS_OK(status)) {
1231 TALLOC_FREE(lck);
1232 fd_close(fsp);
1233 return status;
1234 }
1235 }
1236
1237 /* note that we ignore failure for the following. It is
1238 basically a hack for NFS, and NFS will never set one of
1239 these only read them. Nobody but Samba can ever set a deny
1240 mode and we have already checked our more authoritative
1241 locking database for permission to set this deny mode. If
1242 the kernel refuses the operations then the kernel is wrong.
1243 note that GPFS supports it as well - jmcd */
1244
1245 if (fsp->fh->fd != -1) {
1246 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
1247 if(ret_flock == -1 ){
1248
1249 TALLOC_FREE(lck);
1250 fd_close(fsp);
1251 return NT_STATUS_SHARING_VIOLATION;
1252 }
1253 }
1254
1255 /*
1256 * At this point onwards, we can guarentee that the share entry
1257 * is locked, whether we created the file or not, and that the
1258 * deny mode is compatible with all current opens.
1259 */
1260
1261 /*
1262 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1263 */
1264 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1265
1266 if (file_existed) {
1267 /* stat opens on existing files don't get oplocks. */
1268 if (is_stat_open(open_access_mask)) {
1269 fsp->oplock_type = NO_OPLOCK;
1270 }
1271
1272 if (!(flags2 & O_TRUNC)) {
1273 info = FILE_WAS_OPENED;
1274 } else {
1275 info = FILE_WAS_OVERWRITTEN;
1276 }
1277 } else {
1278 info = FILE_WAS_CREATED;
1279 }
1280
1281 if (pinfo) {
1282 *pinfo = info;
1283 }
1284
1285 /*
1286 * Setup the oplock info in both the shared memory and
1287 * file structs.
1288 */
1289
1290 if ((fsp->oplock_type != NO_OPLOCK) &&
1291 (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
1292 if (!set_file_oplock(fsp, fsp->oplock_type)) {
1293 /* Could not get the kernel oplock */
1294 fsp->oplock_type = NO_OPLOCK;
1295 }
1296 }
1297
1298 if (fsp->oplock_type == LEVEL_II_OPLOCK &&
1299 (!lp_level2_oplocks(SNUM(conn)) ||
1300 !(global_client_caps & CAP_LEVEL_II_OPLOCKS))) {
1301
1302 DEBUG(5, ("Downgrading level2 oplock on open "
1303 "because level2 oplocks = off\n"));
1304
1305 release_file_oplock(fsp);
1306 }
1307
1308 if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
1309 info == FILE_WAS_SUPERSEDED) {
1310 new_file_created = True;
1311 }
1312
1313 set_share_mode(lck, fsp, get_current_uid(conn), 0,
1314 fsp->oplock_type);
1315
1316 /* Handle strange delete on close create semantics. */
1317 if (create_options & FILE_DELETE_ON_CLOSE) {
1318 status = can_set_delete_on_close(fsp, new_dos_attributes);
1319
1320 if (!NT_STATUS_IS_OK(status)) {
1321 /* Remember to delete the mode we just added. */
1322 del_share_mode(lck, fsp);
1323 TALLOC_FREE(lck);
1324 fd_close(fsp);
1325 return status;
1326 }
1327 /* Note that here we set the *inital* delete on close flag,
1328 not the regular one. The magic gets handled in close. */
1329 fsp->initial_delete_on_close = True;
1330 }
1331
1332 /*
1333 * Take care of inherited ACLs on created files - if default ACL not
1334 * selected.
1335 * May be necessary depending on acl policies.
1336 */
1337 if (!posix_open && !file_existed && !def_acl &&
1338 !(VALID_STAT(smb_fname->st) &&
1339 (smb_fname->st.st_ex_flags & SF_HASNTFSACL))) {
1340
1341 int saved_errno = errno; /* We might get ENOSYS in the next
1342 * call.. */
1343
1344 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
1345 errno == ENOSYS) {
1346 errno = saved_errno; /* Ignore ENOSYS */
1347 }
1348
1349 } else if (new_unx_mode) {
1350
1351 int ret = -1;
1352
1353 /* Attributes need changing. File already existed. */
1354
1355 {
1356 int saved_errno = errno; /* We might get ENOSYS in the
1357 * next call.. */
1358 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
1359
1360 if (ret == -1 && errno == ENOSYS) {
1361 errno = saved_errno; /* Ignore ENOSYS */
1362 } else {
1363 DEBUG(5, ("onefs_open_file_ntcreate: reset "
1364 "attributes of file %s to 0%o\n",
1365 smb_fname_str_dbg(smb_fname),
1366 (unsigned int)new_unx_mode));
1367 ret = 0; /* Don't do the fchmod below. */
1368 }
1369 }
1370
1371 if ((ret == -1) &&
1372 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
1373 DEBUG(5, ("onefs_open_file_ntcreate: failed to reset "
1374 "attributes of file %s to 0%o\n",
1375 smb_fname_str_dbg(smb_fname),
1376 (unsigned int)new_unx_mode));
1377 }
1378
1379 /* If this is a successful open, we must remove any deferred open
1380 * records. */
1381 if (req != NULL) {
1382 del_deferred_open_entry(lck, req->mid);
1383 }
1384 TALLOC_FREE(lck);
1385
1386 return NT_STATUS_OK;
1387 }
1388
1389
1390 /****************************************************************************
1391 Open a directory from an NT SMB call.
1392 ****************************************************************************/
1393 static NTSTATUS onefs_open_directory(connection_struct *conn,
1394 struct smb_request *req,
1395 struct smb_filename *smb_dname,
1396 uint32 access_mask,
1397 uint32 share_access,
1398 uint32 create_disposition,
1399 uint32 create_options,
1400 uint32 file_attributes,
1401 struct security_descriptor *sd,
1402 files_struct **result,
1403 int *pinfo)
1404 {
1405 files_struct *fsp = NULL;
1406 struct share_mode_lock *lck = NULL;
1407 NTSTATUS status;
1408 struct timespec mtimespec;
1409 int info = 0;
1410 char *parent_dir;
1411 bool posix_open = false;
1412 uint32 create_flags = 0;
1413 uint32 mode = lp_dir_mask(SNUM(conn));
1414
1415 DEBUG(5, ("onefs_open_directory: opening directory %s, "
1416 "access_mask = 0x%x, "
1417 "share_access = 0x%x create_options = 0x%x, "
1418 "create_disposition = 0x%x, file_attributes = 0x%x\n",
1419 smb_fname_str_dbg(smb_dname), (unsigned int)access_mask,
1420 (unsigned int)share_access, (unsigned int)create_options,
1421 (unsigned int)create_disposition,
1422 (unsigned int)file_attributes));
1423
1424 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1425 (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
1426 is_ntfs_stream_smb_fname(smb_dname)) {
1427 DEBUG(2, ("onefs_open_directory: %s is a stream name!\n",
1428 smb_fname_str_dbg(smb_dname)));
1429 return NT_STATUS_NOT_A_DIRECTORY;
1430 }
1431
1432 switch (create_disposition) {
1433 case FILE_OPEN:
1434 /* If directory exists open. If directory doesn't
1435 * exist error. */
1436 create_flags = 0;
1437 info = FILE_WAS_OPENED;
1438 break;
1439 case FILE_CREATE:
1440 /* If directory exists error. If directory doesn't
1441 * exist create. */
1442 create_flags = O_CREAT | O_EXCL;
1443 info = FILE_WAS_CREATED;
1444 break;
1445 case FILE_OPEN_IF:
1446 /* If directory exists open. If directory doesn't
1447 * exist create. */
1448
1449 /* Note: in order to return whether the directory was
1450 * opened or created, we first try to open and then try
1451 * to create. */
1452 create_flags = 0;
1453 info = FILE_WAS_OPENED;
1454 break;
1455 case FILE_SUPERSEDE:
1456 case FILE_OVERWRITE:
1457 case FILE_OVERWRITE_IF:
1458 default:
1459 DEBUG(5, ("onefs_open_directory: invalid "
1460 "create_disposition 0x%x for directory %s\n",
1461 (unsigned int)create_disposition,
1462 smb_fname_str_dbg(smb_dname)));
1463 return NT_STATUS_INVALID_PARAMETER;
1464 }
1465
1466 /*
1467 * Check for write access to the share. Done in mkdir_internal() in
1468 * mainline samba.
1469 */
1470 if (!CAN_WRITE(conn) && (create_flags & O_CREAT)) {
1471 return NT_STATUS_ACCESS_DENIED;
1472 }
1473
1474 /* Get parent dirname */
1475 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
1476 NULL)) {
1477 return NT_STATUS_NO_MEMORY;
1478 }
1479
1480 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1481 posix_open = true;
1482 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1483 file_attributes = 0;
1484 } else {
1485 mode = unix_mode(conn, aDIR, smb_dname, parent_dir);
1486 }
1487
1488 /*
1489 * The NONINDEXED and COMPRESSED bits seem to always be cleared on
1490 * directories, no matter if you specify that they should be set.
1491 */
1492 file_attributes &=
1493 ~(FILE_ATTRIBUTE_NONINDEXED | FILE_ATTRIBUTE_COMPRESSED);
1494
1495 status = file_new(req, conn, &fsp);
1496 if(!NT_STATUS_IS_OK(status)) {
1497 return status;
1498 }
1499
1500 /*
1501 * Actual open with retry magic to handle FILE_OPEN_IF which is
1502 * unique because the kernel won't tell us if the file was opened or
1503 * created.
1504 */
1505 retry_open:
1506 fsp->fh->fd = onefs_sys_create_file(conn,
1507 -1,
1508 smb_dname->base_name,
1509 access_mask,
1510 access_mask,
1511 share_access,
1512 create_options,
1513 create_flags | O_DIRECTORY,
1514 mode,
1515 0,
1516 0,
1517 sd,
1518 file_attributes,
1519 NULL);
1520
1521 if (fsp->fh->fd == -1) {
1522 DEBUG(3, ("Error opening %s. Errno=%d (%s).\n",
1523 smb_fname_str_dbg(smb_dname), errno,
1524 strerror(errno)));
1525 SMB_ASSERT(errno != EINPROGRESS);
1526
1527 if (create_disposition == FILE_OPEN_IF) {
1528 if (errno == ENOENT) {
1529 /* Try again, creating it this time. */
1530 create_flags = O_CREAT | O_EXCL;
1531 info = FILE_WAS_CREATED;
1532 goto retry_open;
1533 } else if (errno == EEXIST) {
1534 /* Uggh. Try again again. */
1535 create_flags = 0;
1536 info = FILE_WAS_OPENED;
1537 goto retry_open;
1538 }
1539 }
1540
1541 /* Error cases below: */
1542 file_free(req, fsp);
1543
1544 if ((errno == ENOENT) && (create_disposition == FILE_OPEN)) {
1545 DEBUG(5, ("onefs_open_directory: FILE_OPEN requested "
1546 "for directory %s and it doesn't "
1547 "exist.\n", smb_fname_str_dbg(smb_dname)));
1548 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1549 } else if ((errno == EEXIST) &&
1550 (create_disposition == FILE_CREATE)) {
1551 DEBUG(5, ("onefs_open_directory: FILE_CREATE "
1552 "requested for directory %s and it "
1553 "already exists.\n",
1554 smb_fname_str_dbg(smb_dname)));
1555 return NT_STATUS_OBJECT_NAME_COLLISION;
1556 } else if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
1557 /* Catch sharing violations. */
1558 return NT_STATUS_SHARING_VIOLATION;
1559 }
1560
1561 return map_nt_error_from_unix(errno);
1562 }
1563
1564 if (info == FILE_WAS_CREATED) {
1565
1566 /* Pulled from mkdir_internal() */
1567 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
1568 DEBUG(2, ("Could not stat directory '%s' just "
1569 "created: %s\n",
1570 smb_fname_str_dbg(smb_dname),
1571 strerror(errno)));
1572 return map_nt_error_from_unix(errno);
1573 }
1574
1575 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
1576 DEBUG(0, ("Directory just '%s' created is not a "
1577 "directory\n",
1578 smb_fname_str_dbg(smb_dname)));
1579 return NT_STATUS_ACCESS_DENIED;
1580 }
1581
1582 if (!posix_open) {
1583 /*
1584 * Check if high bits should have been set, then (if
1585 * bits are missing): add them. Consider bits
1586 * automagically set by UNIX, i.e. SGID bit from
1587 * parent dir.
1588 */
1589 if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) &&
1590 (mode & ~smb_dname->st.st_ex_mode)) {
1591 SMB_VFS_CHMOD(conn, smb_dname->base_name,
1592 (smb_dname->st.st_ex_mode |
1593 (mode & ~smb_dname->st.st_ex_mode)));
1594 }
1595 }
1596
1597 /* Change the owner if required. */
1598 if (lp_inherit_owner(SNUM(conn))) {
1599 change_dir_owner_to_parent(conn, parent_dir,
1600 smb_dname->base_name,
1601 &smb_dname->st);
1602 }
1603
1604 notify_fname(conn, NOTIFY_ACTION_ADDED,
1605 FILE_NOTIFY_CHANGE_DIR_NAME,
1606 smb_dname->base_name);
1607 }
1608
1609 /* Stat the fd for Samba bookkeeping. */
1610 if(SMB_VFS_FSTAT(fsp, &smb_dname->st) != 0) {
1611 fd_close(fsp);
1612 file_free(req, fsp);
1613 return map_nt_error_from_unix(errno);
1614 }
1615
1616 /* Setup the files_struct for it. */
1617 fsp->mode = smb_dname->st.st_ex_mode;
1618 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
1619 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
1620 fsp->file_pid = req ? req->smbpid : 0;
1621 fsp->can_lock = False;
1622 fsp->can_read = False;
1623 fsp->can_write = False;
1624
1625 fsp->share_access = share_access;
1626 fsp->fh->private_options = 0;
1627 /*
1628 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1629 */
1630 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1631 fsp->print_file = NULL;
1632 fsp->modified = False;
1633 fsp->oplock_type = NO_OPLOCK;
1634 fsp->sent_oplock_break = NO_BREAK_SENT;
1635 fsp->is_directory = True;
1636 fsp->posix_open = posix_open;
1637
1638 status = fsp_set_smb_fname(fsp, smb_dname);
1639 if (!NT_STATUS_IS_OK(status)) {
1640 fd_close(fsp);
1641 file_free(req, fsp);
1642 return status;
1643 }
1644
1645 mtimespec = smb_dname->st.st_ex_mtime;
1646
1647 /*
1648 * Still set the samba share mode lock for correct delete-on-close
1649 * semantics and to make smbstatus more useful.
1650 */
1651 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
1652 conn->connectpath, smb_dname, &mtimespec);
1653
1654 if (lck == NULL) {
1655 DEBUG(0, ("onefs_open_directory: Could not get share mode "
1656 "lock for %s\n", smb_fname_str_dbg(smb_dname)));
1657 fd_close(fsp);
1658 file_free(req, fsp);
1659 return NT_STATUS_SHARING_VIOLATION;
1660 }
1661
1662 if (lck->delete_on_close) {
1663 TALLOC_FREE(lck);
1664 fd_close(fsp);
1665 file_free(req, fsp);
1666 return NT_STATUS_DELETE_PENDING;
1667 }
1668
1669 set_share_mode(lck, fsp, get_current_uid(conn), 0, NO_OPLOCK);
1670
1671 /*
1672 * For directories the delete on close bit at open time seems
1673 * always to be honored on close... See test 19 in Samba4 BASE-DELETE.
1674 */
1675 if (create_options & FILE_DELETE_ON_CLOSE) {
1676 status = can_set_delete_on_close(fsp, 0);
1677 if (!NT_STATUS_IS_OK(status) &&
1678 !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
1679 TALLOC_FREE(lck);
1680 fd_close(fsp);
1681 file_free(req, fsp);
1682 return status;
1683 }
1684
1685 if (NT_STATUS_IS_OK(status)) {
1686 /* Note that here we set the *inital* delete on close flag,
1687 not the regular one. The magic gets handled in close. */
1688 fsp->initial_delete_on_close = True;
1689 }
1690 }
1691
1692 TALLOC_FREE(lck);
1693
1694 if (pinfo) {
1695 *pinfo = info;
1696 }
1697
1698 *result = fsp;
1699 return NT_STATUS_OK;
1700 }
1701
1702 /*
1703 * Wrapper around onefs_open_file_ntcreate and onefs_open_directory.
1704 */
1705 static NTSTATUS onefs_create_file_unixpath(connection_struct *conn,
1706 struct smb_request *req,
1707 struct smb_filename *smb_fname,
1708 uint32_t access_mask,
1709 uint32_t share_access,
1710 uint32_t create_disposition,
1711 uint32_t create_options,
1712 uint32_t file_attributes,
1713 uint32_t oplock_request,
1714 uint64_t allocation_size,
1715 uint32_t private_flags,
1716 struct security_descriptor *sd,
1717 struct ea_list *ea_list,
1718 files_struct **result,
1719 int *pinfo,
1720 struct onefs_fsp_data *fsp_data)
1721 {
1722 int info = FILE_WAS_OPENED;
1723 files_struct *base_fsp = NULL;
1724 files_struct *fsp = NULL;
1725 NTSTATUS status;
1726
1727 DEBUG(10,("onefs_create_file_unixpath: access_mask = 0x%x "
1728 "file_attributes = 0x%x, share_access = 0x%x, "
1729 "create_disposition = 0x%x create_options = 0x%x "
1730 "oplock_request = 0x%x private_flags = 0x%x "
1731 "ea_list = 0x%p, sd = 0x%p, "
1732 "fname = %s\n",
1733 (unsigned int)access_mask,
1734 (unsigned int)file_attributes,
1735 (unsigned int)share_access,
1736 (unsigned int)create_disposition,
1737 (unsigned int)create_options,
1738 (unsigned int)oplock_request,
1739 (unsigned int)private_flags,
1740 ea_list, sd, smb_fname_str_dbg(smb_fname)));
1741
1742 if (create_options & FILE_OPEN_BY_FILE_ID) {
1743 status = NT_STATUS_NOT_SUPPORTED;
1744 goto fail;
1745 }
1746
1747 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
1748 status = NT_STATUS_INVALID_PARAMETER;
1749 goto fail;
1750 }
1751
1752 if (req == NULL) {
1753 SMB_ASSERT((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) ==
1754 NO_OPLOCK);
1755 oplock_request |= INTERNAL_OPEN_ONLY;
1756 }
1757
1758 if (lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE,
1759 PARM_IGNORE_SACLS, PARM_IGNORE_SACLS_DEFAULT)) {
1760 access_mask &= ~SYSTEM_SECURITY_ACCESS;
1761 }
1762
1763 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1764 && (access_mask & DELETE_ACCESS)
1765 && !is_ntfs_stream_smb_fname(smb_fname)) {
1766 /*
1767 * We can't open a file with DELETE access if any of the
1768 * streams is open without FILE_SHARE_DELETE
1769 */
1770 status = open_streams_for_delete(conn, smb_fname->base_name);
1771
1772 if (!NT_STATUS_IS_OK(status)) {
1773 goto fail;
1774 }
1775 }
1776
1777 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1778 && is_ntfs_stream_smb_fname(smb_fname)) {
1779 uint32 base_create_disposition;
1780 struct smb_filename *smb_fname_base = NULL;
1781
1782 if (create_options & FILE_DIRECTORY_FILE) {
1783 status = NT_STATUS_NOT_A_DIRECTORY;
1784 goto fail;
1785 }
1786
1787 switch (create_disposition) {
1788 case FILE_OPEN:
1789 base_create_disposition = FILE_OPEN;
1790 break;
1791 default:
1792 base_create_disposition = FILE_OPEN_IF;
1793 break;
1794 }
1795
1796 /* Create an smb_filename with stream_name == NULL. */
1797 status = create_synthetic_smb_fname(talloc_tos(),
1798 smb_fname->base_name,
1799 NULL, NULL,
1800 &smb_fname_base);
1801 if (!NT_STATUS_IS_OK(status)) {
1802 goto fail;
1803 }
1804
1805 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
1806 DEBUG(10, ("Unable to stat stream: %s\n",
1807 smb_fname_str_dbg(smb_fname_base)));
1808 }
1809
1810 status = onefs_create_file_unixpath(
1811 conn, /* conn */
1812 NULL, /* req */
1813 smb_fname_base, /* fname */
1814 SYNCHRONIZE_ACCESS, /* access_mask */
1815 (FILE_SHARE_READ |
1816 FILE_SHARE_WRITE |
1817 FILE_SHARE_DELETE), /* share_access */
1818 base_create_disposition, /* create_disposition*/
1819 0, /* create_options */
1820 file_attributes, /* file_attributes */
1821 NO_OPLOCK, /* oplock_request */
1822 0, /* allocation_size */
1823 0, /* private_flags */
1824 NULL, /* sd */
1825 NULL, /* ea_list */
1826 &base_fsp, /* result */
1827 NULL, /* pinfo */
1828 NULL); /* fsp_data */
1829
1830 TALLOC_FREE(smb_fname_base);
1831
1832 if (!NT_STATUS_IS_OK(status)) {
1833 DEBUG(10, ("onefs_create_file_unixpath for base %s "
1834 "failed: %s\n", smb_fname->base_name,
1835 nt_errstr(status)));
1836 goto fail;
1837 }
1838
1839 /*
1840 * Testing against windows xp/2003/vista shows that oplocks
1841 * can actually be requested and granted on streams (see the
1842 * RAW-OPLOCK-STREAM1 smbtorture test).
1843 */
1844 if ((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) !=
1845 NO_OPLOCK) {
1846 DEBUG(5, ("Oplock(%d) being requested on a stream! "
1847 "Ignoring oplock request: fname=%s\n",
1848 oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK,
1849 smb_fname_str_dbg(smb_fname)));
1850 /* Request NO_OPLOCK instead. */
1851 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1852 }
1853 }
1854
1855 /* Covert generic bits in the security descriptor. */
1856 if (sd != NULL) {
1857 security_acl_map_generic(sd->dacl, &file_generic_mapping);
1858 security_acl_map_generic(sd->sacl, &file_generic_mapping);
1859 }
1860
1861 /*
1862 * If it's a request for a directory open, deal with it separately.
1863 */
1864
1865 if (create_options & FILE_DIRECTORY_FILE) {
1866
1867 if (create_options & FILE_NON_DIRECTORY_FILE) {
1868 status = NT_STATUS_INVALID_PARAMETER;
1869 goto fail;
1870 }
1871
1872 /* Can't open a temp directory. IFS kit test. */
1873 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1874 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
1875 status = NT_STATUS_INVALID_PARAMETER;
1876 goto fail;
1877 }
1878
1879 /*
1880 * We will get a create directory here if the Win32
1881 * app specified a security descriptor in the
1882 * CreateDirectory() call.
1883 */
1884
1885 status = onefs_open_directory(
1886 conn, /* conn */
1887 req, /* req */
1888 smb_fname, /* fname */
1889 access_mask, /* access_mask */
1890 share_access, /* share_access */
1891 create_disposition, /* create_disposition*/
1892 create_options, /* create_options */
1893 file_attributes, /* file_attributes */
1894 sd, /* sd */
1895 &fsp, /* result */
1896 &info); /* pinfo */
1897 } else {
1898
1899 /*
1900 * Ordinary file case.
1901 */
1902
1903 status = file_new(req, conn, &fsp);
1904 if(!NT_STATUS_IS_OK(status)) {
1905 goto fail;
1906 }
1907
1908 /*
1909 * We're opening the stream element of a base_fsp
1910 * we already opened. Set up the base_fsp pointer.
1911 */
1912 if (base_fsp) {
1913 fsp->base_fsp = base_fsp;
1914 }
1915
1916 status = onefs_open_file_ntcreate(
1917 conn, /* conn */
1918 req, /* req */
1919 smb_fname, /* fname */
1920 access_mask, /* access_mask */
1921 share_access, /* share_access */
1922 create_disposition, /* create_disposition*/
1923 create_options, /* create_options */
1924 file_attributes, /* file_attributes */
1925 oplock_request, /* oplock_request */
1926 sd, /* sd */
1927 fsp, /* result */
1928 &info, /* pinfo */
1929 fsp_data); /* fsp_data */
1930
1931 if(!NT_STATUS_IS_OK(status)) {
1932 file_free(req, fsp);
1933 fsp = NULL;
1934 }
1935
1936 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
1937
1938 /* A stream open never opens a directory */
1939
1940 if (base_fsp) {
1941 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1942 goto fail;
1943 }
1944
1945 /*
1946 * Fail the open if it was explicitly a non-directory
1947 * file.
1948 */
1949
1950 if (create_options & FILE_NON_DIRECTORY_FILE) {
1951 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1952 goto fail;
1953 }
1954
1955 create_options |= FILE_DIRECTORY_FILE;
1956
1957 status = onefs_open_directory(
1958 conn, /* conn */
1959 req, /* req */
1960 smb_fname, /* fname */
1961 access_mask, /* access_mask */
1962 share_access, /* share_access */
1963 create_disposition, /* create_disposition*/
1964 create_options, /* create_options */
1965 file_attributes, /* file_attributes */
1966 sd, /* sd */
1967 &fsp, /* result */
1968 &info); /* pinfo */
1969 }
1970 }
1971
1972 if (!NT_STATUS_IS_OK(status)) {
1973 goto fail;
1974 }
1975
1976 fsp->base_fsp = base_fsp;
1977
1978 SMB_ASSERT(fsp);
1979
1980 if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
1981 status = set_ea(conn, fsp, smb_fname, ea_list);
1982 if (!NT_STATUS_IS_OK(status)) {
1983 goto fail;
1984 }
1985 }
1986
1987 if (!fsp->is_directory && S_ISDIR(smb_fname->st.st_ex_mode)) {
1988 status = NT_STATUS_ACCESS_DENIED;
1989 goto fail;
1990 }
1991
1992 /* Save the requested allocation size. */
1993 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
1994 if (allocation_size
1995 && (allocation_size > smb_fname->st.st_ex_size)) {
1996 fsp->initial_allocation_size = smb_roundup(
1997 fsp->conn, allocation_size);
1998 if (fsp->is_directory) {
1999 /* Can't set allocation size on a directory. */
2000 status = NT_STATUS_ACCESS_DENIED;
2001 goto fail;
2002 }
2003 if (vfs_allocate_file_space(
2004 fsp, fsp->initial_allocation_size) == -1) {
2005 status = NT_STATUS_DISK_FULL;
2006 goto fail;
2007 }
2008 } else {
2009 fsp->initial_allocation_size = smb_roundup(
2010 fsp->conn, (uint64_t)smb_fname->st.st_ex_size);
2011 }
2012 }
2013
2014 DEBUG(10, ("onefs_create_file_unixpath: info=%d\n", info));
2015
2016 *result = fsp;
2017 if (pinfo != NULL) {
2018 *pinfo = info;
2019 }
2020 if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
2021 SMB_VFS_FSTAT(fsp, &smb_fname->st);
2022 }
2023 return NT_STATUS_OK;
2024
2025 fail:
2026 DEBUG(10, ("onefs_create_file_unixpath: %s\n", nt_errstr(status)));
2027
2028 if (fsp != NULL) {
2029 if (base_fsp && fsp->base_fsp == base_fsp) {
2030 /*
2031 * The close_file below will close
2032 * fsp->base_fsp.
2033 */
2034 base_fsp = NULL;
2035 }
2036 close_file(req, fsp, ERROR_CLOSE);
2037 fsp = NULL;
2038 }
2039 if (base_fsp != NULL) {
2040 close_file(req, base_fsp, ERROR_CLOSE);
2041 base_fsp = NULL;
2042 }
2043 return status;
2044 }
2045
2046 static void destroy_onefs_fsp_data(void *p_data)
2047 {
2048 struct onefs_fsp_data *fsp_data = (struct onefs_fsp_data *)p_data;
2049
2050 destroy_onefs_callback_record(fsp_data->oplock_callback_id);
2051 }
2052
2053 /**
2054 * SMB_VFS_CREATE_FILE interface to onefs.
2055 */
2056 NTSTATUS onefs_create_file(vfs_handle_struct *handle,
2057 struct smb_request *req,
2058 uint16_t root_dir_fid,
2059 struct smb_filename *smb_fname,
2060 uint32_t access_mask,
2061 uint32_t share_access,
2062 uint32_t create_disposition,
2063 uint32_t create_options,
2064 uint32_t file_attributes,
2065 uint32_t oplock_request,
2066 uint64_t allocation_size,
2067 uint32_t private_flags,
2068 struct security_descriptor *sd,
2069 struct ea_list *ea_list,
2070 files_struct **result,
2071 int *pinfo)
2072 {
2073 connection_struct *conn = handle->conn;
2074 struct onefs_fsp_data fsp_data = {};
2075 int info = FILE_WAS_OPENED;
2076 files_struct *fsp = NULL;
2077 NTSTATUS status;
2078
2079 DEBUG(10,("onefs_create_file: access_mask = 0x%x "
2080 "file_attributes = 0x%x, share_access = 0x%x, "
2081 "create_disposition = 0x%x create_options = 0x%x "
2082 "oplock_request = 0x%x private_flags = 0x%x"
2083 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
2084 "fname = %s\n",
2085 (unsigned int)access_mask,
2086 (unsigned int)file_attributes,
2087 (unsigned int)share_access,
2088 (unsigned int)create_disposition,
2089 (unsigned int)create_options,
2090 (unsigned int)oplock_request,
2091 (unsigned int)private_flags,
2092 (unsigned int)root_dir_fid,
2093 ea_list, sd, smb_fname_str_dbg(smb_fname)));
2094
2095 /* Get the file name if root_dir_fid was specified. */
2096 if (root_dir_fid != 0) {
2097 struct smb_filename *smb_fname_out = NULL;
2098 status = get_relative_fid_filename(conn, req, root_dir_fid,
2099 smb_fname, &smb_fname_out);
2100 if (!NT_STATUS_IS_OK(status)) {
2101 goto fail;
2102 }
2103 smb_fname = smb_fname_out;
2104 }
2105
2106 /* All file access must go through check_name() */
2107 status = check_name(conn, smb_fname->base_name);
2108 if (!NT_STATUS_IS_OK(status)) {
2109 goto fail;
2110 }
2111
2112 if (is_ntfs_stream_smb_fname(smb_fname)) {
2113 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
2114 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2115 goto fail;
2116 }
2117
2118 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
2119 int ret;
2120 smb_fname->stream_name = NULL;
2121 /* We have to handle this error here. */
2122 if (create_options & FILE_DIRECTORY_FILE) {
2123 status = NT_STATUS_NOT_A_DIRECTORY;
2124 goto fail;
2125 }
2126 if (lp_posix_pathnames()) {
2127 ret = SMB_VFS_LSTAT(conn, smb_fname);
2128 } else {
2129 ret = SMB_VFS_STAT(conn, smb_fname);
2130 }
2131
2132 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
2133 status = NT_STATUS_FILE_IS_A_DIRECTORY;
2134 goto fail;
2135 }
2136 }
2137 }
2138
2139 status = onefs_create_file_unixpath(
2140 conn, /* conn */
2141 req, /* req */
2142 smb_fname, /* fname */
2143 access_mask, /* access_mask */
2144 share_access, /* share_access */
2145 create_disposition, /* create_disposition*/
2146 create_options, /* create_options */
2147 file_attributes, /* file_attributes */
2148 oplock_request, /* oplock_request */
2149 allocation_size, /* allocation_size */
2150 private_flags,
2151 sd, /* sd */
2152 ea_list, /* ea_list */
2153 &fsp, /* result */
2154 &info, /* pinfo */
2155 &fsp_data); /* psbuf */
2156
2157 if (!NT_STATUS_IS_OK(status)) {
2158 goto fail;
2159 }
2160
2161 DEBUG(10, ("onefs_create_file: info=%d\n", info));
2162
2163 /*
2164 * Setup private onefs_fsp_data. Currently the private data struct is
2165 * only used to store the oplock_callback_id so that when the file is
2166 * closed, the onefs_callback_record can be properly cleaned up in the
2167 * oplock_onefs sub-system.
2168 */
2169 if (fsp) {
2170 struct onefs_fsp_data *fsp_data_tmp = NULL;
2171 fsp_data_tmp = (struct onefs_fsp_data *)
2172 VFS_ADD_FSP_EXTENSION(handle, fsp, struct onefs_fsp_data,
2173 &destroy_onefs_fsp_data);
2174
2175 if (fsp_data_tmp == NULL) {
2176 status = NT_STATUS_NO_MEMORY;
2177 goto fail;
2178 }
2179
2180 *fsp_data_tmp = fsp_data;
2181 }
2182
2183 *result = fsp;
2184 if (pinfo != NULL) {
2185 *pinfo = info;
2186 }
2187 return NT_STATUS_OK;
2188
2189 fail:
2190 DEBUG(10, ("onefs_create_file: %s\n", nt_errstr(status)));
2191
2192 if (fsp != NULL) {
2193 close_file(req, fsp, ERROR_CLOSE);
2194 fsp = NULL;
2195 }
2196 return status;
2197 }
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