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Fix the overwriting of errno before use in a DEBUG statement and use the return value...
[Samba/gebeck_regimport.git] / source3 / modules / onefs_open.c
bloba77d6f3e7e7cc37db4401ef4715d3aa26495de7e
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_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 FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
502 * created new. */
503 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
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 | FILE_ATTRIBUTE_ARCHIVE) &
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->sconn,
875 req->mid);
876 if (oplock_callback_id == 0) {
877 return NT_STATUS_NO_MEMORY;
878 }
879 } else {
880 /*
881 * It is also already asserted it's either a stream or a
882 * stat-only open at this point.
883 */
884 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
885
886 /* The kernel and Samba's version of stat-only differs
887 * slightly: The kernel doesn't think its stat-only if we're
888 * truncating. We'd better have a req in order to defer the
889 * open. */
890 SMB_ASSERT(!((flags|flags2) & O_TRUNC));
891 }
892
893 /* Do the open. */
894 status = onefs_open_file(fsp,
895 conn,
896 req,
897 parent_dir,
898 smb_fname,
899 flags|flags2,
900 unx_mode,
901 access_mask,
902 open_access_mask,
903 fsp->oplock_type,
904 oplock_callback_id,
905 share_access,
906 create_options,
907 createfile_attributes,
908 sd,
909 &granted_oplock);
910
911 if (!NT_STATUS_IS_OK(status)) {
912
913 /* OneFS Oplock Handling */
914 if (errno == EINPROGRESS) {
915
916 /* If we get EINPROGRESS, the kernel will send us an
917 * asynchronous semlock event back. Ensure we can defer
918 * the open, by asserting req. */
919 SMB_ASSERT(req);
920
921 if (lck == NULL) {
922 /*
923 * We hit the race that when we did the stat
924 * on the file it did not exist, and someone
925 * has created it in between the stat and the
926 * open_file() call. Defer our open waiting,
927 * to break the oplock of the first opener.
928 */
929
930 struct timespec old_write_time;
931
932 DEBUG(3, ("Someone created file %s with an "
933 "oplock after we looked: Retrying\n",
934 smb_fname_str_dbg(smb_fname)));
935 /*
936 * We hit the race that when we did the stat
937 * on the file it did not exist, and someone
938 * has created it in between the stat and the
939 * open_file() call. Just retry immediately.
940 */
941 id = vfs_file_id_from_sbuf(conn,
942 &smb_fname->st);
943 if (!(lck = get_share_mode_lock(talloc_tos(),
944 id, conn->connectpath, smb_fname,
945 &old_write_time))) {
946 /*
947 * Emergency exit
948 */
949 DEBUG(0, ("onefs_open_file_ntcreate: "
950 "Could not get share mode "
951 "lock for %s\n",
952 smb_fname_str_dbg(smb_fname)));
953 status = NT_STATUS_SHARING_VIOLATION;
954
955 /* XXXZLK: This will cause us to get a
956 * semlock event when we aren't
957 * expecting one. */
958 goto cleanup_destroy;
959 }
960
961 schedule_defer_open(lck, request_time, req);
962 goto cleanup;
963 }
964 /* Waiting for an oplock */
965 DEBUG(5,("Async createfile because a client has an "
966 "oplock on %s\n",
967 smb_fname_str_dbg(smb_fname)));
968
969 SMB_ASSERT(req);
970 schedule_defer_open(lck, request_time, req);
971 goto cleanup;
972 }
973
974 /* Check for a sharing violation */
975 if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
976 uint32 can_access_mask;
977 bool can_access = True;
978
979 /* If we raced on open we may not have a valid file_id
980 * or stat buf. Get them again. */
981 if (SMB_VFS_STAT(conn, fname, psbuf) == -1) {
982 DEBUG(0,("Error doing stat on file %s "
983 "(%s)\n", fname, strerror(errno)));
984 status = NT_STATUS_SHARING_VIOLATION;
985 goto cleanup_destroy;
986 }
987 id = vfs_file_id_from_sbuf(conn, psbuf);
988
989 /* Check if this can be done with the deny_dos and fcb
990 * calls. */
991
992 /* Try to find dup fsp if possible. */
993 if (private_flags &
994 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
995 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
996
997 if (req == NULL) {
998 DEBUG(0, ("DOS open without an SMB "
999 "request!\n"));
1000 status = NT_STATUS_INTERNAL_ERROR;
1001 goto cleanup_destroy;
1002 }
1003
1004 /* Use the client requested access mask here,
1005 * not the one we open with. */
1006 status = fcb_or_dos_open(req,
1007 conn,
1008 fsp,
1009 smb_fname,
1010 id,
1011 req->smbpid,
1012 req->vuid,
1013 access_mask,
1014 share_access,
1015 create_options);
1016
1017 if (NT_STATUS_IS_OK(status)) {
1018 if (pinfo) {
1019 *pinfo = FILE_WAS_OPENED;
1020 }
1021 status = NT_STATUS_OK;
1022 goto cleanup;
1023 }
1024 }
1025
1026 /*
1027 * This next line is a subtlety we need for
1028 * MS-Access. If a file open will fail due to share
1029 * permissions and also for security (access) reasons,
1030 * we need to return the access failed error, not the
1031 * share error. We can't open the file due to kernel
1032 * oplock deadlock (it's possible we failed above on
1033 * the open_mode_check()) so use a userspace check.
1034 */
1035
1036 if (flags & O_RDWR) {
1037 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
1038 } else if (flags & O_WRONLY) {
1039 can_access_mask = FILE_WRITE_DATA;
1040 } else {
1041 can_access_mask = FILE_READ_DATA;
1042 }
1043
1044 if (((can_access_mask & FILE_WRITE_DATA) &&
1045 !CAN_WRITE(conn)) ||
1046 !NT_STATUS_IS_OK(smbd_check_access_rights(conn,
1047 smb_fname, can_access_mask))) {
1048 can_access = False;
1049 }
1050
1051 /*
1052 * If we're returning a share violation, ensure we
1053 * cope with the braindead 1 second delay.
1054 */
1055 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
1056 lp_defer_sharing_violations()) {
1057 struct timeval timeout;
1058 struct deferred_open_record state;
1059 int timeout_usecs;
1060
1061 /* this is a hack to speed up torture tests
1062 in 'make test' */
1063 timeout_usecs = lp_parm_int(SNUM(conn),
1064 "smbd","sharedelay",
1065 SHARING_VIOLATION_USEC_WAIT);
1066
1067 /* This is a relative time, added to the
1068 absolute request_time value to get the
1069 absolute timeout time. Note that if this
1070 is the second or greater time we enter this
1071 codepath for this particular request mid
1072 then request_time is left as the absolute
1073 time of the *first* time this request mid
1074 was processed. This is what allows the
1075 request to eventually time out. */
1076
1077 timeout = timeval_set(0, timeout_usecs);
1078
1079 /* Nothing actually uses
1080 state.delayed_for_oplocks but it's handy to
1081 differentiate in debug messages between a
1082 30 second delay due to oplock break, and a
1083 1 second delay for share mode conflicts. */
1084
1085 state.delayed_for_oplocks = False;
1086 state.id = id;
1087 state.failed = false;
1088
1089 /*
1090 * We hit the race that when we did the stat
1091 * on the file it did not exist, and someone
1092 * has created it in between the stat and the
1093 * open_file() call. Retrieve the share_mode
1094 * lock on the newly opened file so we can
1095 * defer our request.
1096 */
1097 if (lck == NULL) {
1098 struct timespec old_write_time;
1099 old_write_time = get_mtimespec(psbuf);
1100
1101 lck = get_share_mode_lock(talloc_tos(),
1102 id, conn->connectpath, fname,
1103 &old_write_time);
1104 if (lck == NULL) {
1105 DEBUG(0,
1106 ("onefs_open_file_ntcreate:"
1107 " Could not get share "
1108 "mode lock for %s\n",
1109 fname));
1110 /* This will cause us to return
1111 * immediately skipping the
1112 * the 1 second delay, which
1113 * isn't a big deal */
1114 status = NT_STATUS_SHARING_VIOLATION;
1115 goto cleanup_destroy;
1116 }
1117 }
1118
1119 if ((req != NULL) &&
1120 !request_timed_out(request_time, timeout))
1121 {
1122 defer_open(lck, request_time, timeout,
1123 req, &state);
1124 }
1125 }
1126
1127 if (can_access) {
1128 /*
1129 * We have detected a sharing violation here
1130 * so return the correct error code
1131 */
1132 status = NT_STATUS_SHARING_VIOLATION;
1133 } else {
1134 status = NT_STATUS_ACCESS_DENIED;
1135 }
1136
1137 goto cleanup_destroy;
1138 }
1139
1140 /*
1141 * Normal error, for example EACCES
1142 */
1143 cleanup_destroy:
1144 if (oplock_callback_id != 0) {
1145 destroy_onefs_callback_record(oplock_callback_id);
1146 }
1147 cleanup:
1148 TALLOC_FREE(lck);
1149 return status;
1150 }
1151
1152 fsp->oplock_type = granted_oplock;
1153
1154 if (oplock_callback_id != 0) {
1155 onefs_set_oplock_callback(oplock_callback_id, fsp);
1156 fsp_data->oplock_callback_id = oplock_callback_id;
1157 } else {
1158 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
1159 }
1160
1161 if (!file_existed) {
1162 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
1163 /*
1164 * Deal with the race condition where two smbd's detect the
1165 * file doesn't exist and do the create at the same time. One
1166 * of them will win and set a share mode, the other (ie. this
1167 * one) should check if the requested share mode for this
1168 * create is allowed.
1169 */
1170
1171 /*
1172 * Now the file exists and fsp is successfully opened,
1173 * fsp->file_id is valid and should replace the
1174 * dev=0, inode=0 from a non existent file. Spotted by
1175 * Nadav Danieli <nadavd@exanet.com>. JRA.
1176 */
1177
1178 id = fsp->file_id;
1179
1180 lck = get_share_mode_lock(talloc_tos(), id,
1181 conn->connectpath,
1182 smb_fname, &old_write_time);
1183
1184 if (lck == NULL) {
1185 DEBUG(0, ("onefs_open_file_ntcreate: Could not get "
1186 "share mode lock for %s\n",
1187 smb_fname_str_dbg(smb_fname)));
1188 fd_close(fsp);
1189 return NT_STATUS_SHARING_VIOLATION;
1190 }
1191
1192 if (lck->delete_on_close) {
1193 status = NT_STATUS_DELETE_PENDING;
1194 }
1195
1196 if (!NT_STATUS_IS_OK(status)) {
1197 struct deferred_open_record state;
1198
1199 fd_close(fsp);
1200
1201 state.delayed_for_oplocks = False;
1202 state.id = id;
1203
1204 /* Do it all over again immediately. In the second
1205 * round we will find that the file existed and handle
1206 * the DELETE_PENDING and FCB cases correctly. No need
1207 * to duplicate the code here. Essentially this is a
1208 * "goto top of this function", but don't tell
1209 * anybody... */
1210
1211 if (req != NULL) {
1212 defer_open(lck, request_time, timeval_zero(),
1213 req, &state);
1214 }
1215 TALLOC_FREE(lck);
1216 return status;
1217 }
1218
1219 /*
1220 * We exit this block with the share entry *locked*.....
1221 */
1222
1223 }
1224
1225 SMB_ASSERT(lck != NULL);
1226
1227 /* Delete streams if create_disposition requires it */
1228 if (file_existed && clear_ads &&
1229 !is_ntfs_stream_smb_fname(smb_fname)) {
1230 status = delete_all_streams(conn, smb_fname->base_name);
1231 if (!NT_STATUS_IS_OK(status)) {
1232 TALLOC_FREE(lck);
1233 fd_close(fsp);
1234 return status;
1235 }
1236 }
1237
1238 /* note that we ignore failure for the following. It is
1239 basically a hack for NFS, and NFS will never set one of
1240 these only read them. Nobody but Samba can ever set a deny
1241 mode and we have already checked our more authoritative
1242 locking database for permission to set this deny mode. If
1243 the kernel refuses the operations then the kernel is wrong.
1244 note that GPFS supports it as well - jmcd */
1245
1246 if (fsp->fh->fd != -1) {
1247 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
1248 if(ret_flock == -1 ){
1249
1250 TALLOC_FREE(lck);
1251 fd_close(fsp);
1252 return NT_STATUS_SHARING_VIOLATION;
1253 }
1254 }
1255
1256 /*
1257 * At this point onwards, we can guarentee that the share entry
1258 * is locked, whether we created the file or not, and that the
1259 * deny mode is compatible with all current opens.
1260 */
1261
1262 /*
1263 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1264 */
1265 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1266
1267 if (file_existed) {
1268 /* stat opens on existing files don't get oplocks. */
1269 if (is_stat_open(open_access_mask)) {
1270 fsp->oplock_type = NO_OPLOCK;
1271 }
1272
1273 if (!(flags2 & O_TRUNC)) {
1274 info = FILE_WAS_OPENED;
1275 } else {
1276 info = FILE_WAS_OVERWRITTEN;
1277 }
1278 } else {
1279 info = FILE_WAS_CREATED;
1280 }
1281
1282 if (pinfo) {
1283 *pinfo = info;
1284 }
1285
1286 /*
1287 * Setup the oplock info in both the shared memory and
1288 * file structs.
1289 */
1290
1291 if ((fsp->oplock_type != NO_OPLOCK) &&
1292 (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
1293 if (!set_file_oplock(fsp, fsp->oplock_type)) {
1294 /* Could not get the kernel oplock */
1295 fsp->oplock_type = NO_OPLOCK;
1296 }
1297 }
1298
1299 if (fsp->oplock_type == LEVEL_II_OPLOCK &&
1300 (!lp_level2_oplocks(SNUM(conn)) ||
1301 !(global_client_caps & CAP_LEVEL_II_OPLOCKS))) {
1302
1303 DEBUG(5, ("Downgrading level2 oplock on open "
1304 "because level2 oplocks = off\n"));
1305
1306 release_file_oplock(fsp);
1307 }
1308
1309 if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
1310 info == FILE_WAS_SUPERSEDED) {
1311 new_file_created = True;
1312 }
1313
1314 set_share_mode(lck, fsp, get_current_uid(conn),
1315 req ? req->mid : 0,
1316 fsp->oplock_type);
1317
1318 /* Handle strange delete on close create semantics. */
1319 if (create_options & FILE_DELETE_ON_CLOSE) {
1320 status = can_set_delete_on_close(fsp, new_dos_attributes);
1321
1322 if (!NT_STATUS_IS_OK(status)) {
1323 /* Remember to delete the mode we just added. */
1324 del_share_mode(lck, fsp);
1325 TALLOC_FREE(lck);
1326 fd_close(fsp);
1327 return status;
1328 }
1329 /* Note that here we set the *inital* delete on close flag,
1330 not the regular one. The magic gets handled in close. */
1331 fsp->initial_delete_on_close = True;
1332 }
1333
1334 /*
1335 * Take care of inherited ACLs on created files - if default ACL not
1336 * selected.
1337 * May be necessary depending on acl policies.
1338 */
1339 if (!posix_open && !file_existed && !def_acl &&
1340 !(VALID_STAT(smb_fname->st) &&
1341 (smb_fname->st.st_ex_flags & SF_HASNTFSACL))) {
1342
1343 int saved_errno = errno; /* We might get ENOSYS in the next
1344 * call.. */
1345
1346 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
1347 errno == ENOSYS) {
1348 errno = saved_errno; /* Ignore ENOSYS */
1349 }
1350
1351 } else if (new_unx_mode) {
1352
1353 int ret = -1;
1354
1355 /* Attributes need changing. File already existed. */
1356
1357 {
1358 int saved_errno = errno; /* We might get ENOSYS in the
1359 * next call.. */
1360 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
1361
1362 if (ret == -1 && errno == ENOSYS) {
1363 errno = saved_errno; /* Ignore ENOSYS */
1364 } else {
1365 DEBUG(5, ("onefs_open_file_ntcreate: reset "
1366 "attributes of file %s to 0%o\n",
1367 smb_fname_str_dbg(smb_fname),
1368 (unsigned int)new_unx_mode));
1369 ret = 0; /* Don't do the fchmod below. */
1370 }
1371 }
1372
1373 if ((ret == -1) &&
1374 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
1375 DEBUG(5, ("onefs_open_file_ntcreate: failed to reset "
1376 "attributes of file %s to 0%o\n",
1377 smb_fname_str_dbg(smb_fname),
1378 (unsigned int)new_unx_mode));
1379 }
1380
1381 /* If this is a successful open, we must remove any deferred open
1382 * records. */
1383 if (req != NULL) {
1384 del_deferred_open_entry(lck, req->mid);
1385 }
1386 TALLOC_FREE(lck);
1387
1388 return NT_STATUS_OK;
1389 }
1390
1391
1392 /****************************************************************************
1393 Open a directory from an NT SMB call.
1394 ****************************************************************************/
1395 static NTSTATUS onefs_open_directory(connection_struct *conn,
1396 struct smb_request *req,
1397 struct smb_filename *smb_dname,
1398 uint32 access_mask,
1399 uint32 share_access,
1400 uint32 create_disposition,
1401 uint32 create_options,
1402 uint32 file_attributes,
1403 struct security_descriptor *sd,
1404 files_struct **result,
1405 int *pinfo)
1406 {
1407 files_struct *fsp = NULL;
1408 struct share_mode_lock *lck = NULL;
1409 NTSTATUS status;
1410 struct timespec mtimespec;
1411 int info = 0;
1412 char *parent_dir;
1413 bool posix_open = false;
1414 uint32 create_flags = 0;
1415 uint32 mode = lp_dir_mask(SNUM(conn));
1416
1417 DEBUG(5, ("onefs_open_directory: opening directory %s, "
1418 "access_mask = 0x%x, "
1419 "share_access = 0x%x create_options = 0x%x, "
1420 "create_disposition = 0x%x, file_attributes = 0x%x\n",
1421 smb_fname_str_dbg(smb_dname), (unsigned int)access_mask,
1422 (unsigned int)share_access, (unsigned int)create_options,
1423 (unsigned int)create_disposition,
1424 (unsigned int)file_attributes));
1425
1426 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1427 (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
1428 is_ntfs_stream_smb_fname(smb_dname)) {
1429 DEBUG(2, ("onefs_open_directory: %s is a stream name!\n",
1430 smb_fname_str_dbg(smb_dname)));
1431 return NT_STATUS_NOT_A_DIRECTORY;
1432 }
1433
1434 switch (create_disposition) {
1435 case FILE_OPEN:
1436 /* If directory exists open. If directory doesn't
1437 * exist error. */
1438 create_flags = 0;
1439 info = FILE_WAS_OPENED;
1440 break;
1441 case FILE_CREATE:
1442 /* If directory exists error. If directory doesn't
1443 * exist create. */
1444 create_flags = O_CREAT | O_EXCL;
1445 info = FILE_WAS_CREATED;
1446 break;
1447 case FILE_OPEN_IF:
1448 /* If directory exists open. If directory doesn't
1449 * exist create. */
1450
1451 /* Note: in order to return whether the directory was
1452 * opened or created, we first try to open and then try
1453 * to create. */
1454 create_flags = 0;
1455 info = FILE_WAS_OPENED;
1456 break;
1457 case FILE_SUPERSEDE:
1458 case FILE_OVERWRITE:
1459 case FILE_OVERWRITE_IF:
1460 default:
1461 DEBUG(5, ("onefs_open_directory: invalid "
1462 "create_disposition 0x%x for directory %s\n",
1463 (unsigned int)create_disposition,
1464 smb_fname_str_dbg(smb_dname)));
1465 return NT_STATUS_INVALID_PARAMETER;
1466 }
1467
1468 /*
1469 * Check for write access to the share. Done in mkdir_internal() in
1470 * mainline samba.
1471 */
1472 if (!CAN_WRITE(conn) && (create_flags & O_CREAT)) {
1473 return NT_STATUS_ACCESS_DENIED;
1474 }
1475
1476 /* Get parent dirname */
1477 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
1478 NULL)) {
1479 return NT_STATUS_NO_MEMORY;
1480 }
1481
1482 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1483 posix_open = true;
1484 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1485 file_attributes = 0;
1486 } else {
1487 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
1488 }
1489
1490 /*
1491 * The NONINDEXED and COMPRESSED bits seem to always be cleared on
1492 * directories, no matter if you specify that they should be set.
1493 */
1494 file_attributes &=
1495 ~(FILE_ATTRIBUTE_NONINDEXED | FILE_ATTRIBUTE_COMPRESSED);
1496
1497 status = file_new(req, conn, &fsp);
1498 if(!NT_STATUS_IS_OK(status)) {
1499 return status;
1500 }
1501
1502 /*
1503 * Actual open with retry magic to handle FILE_OPEN_IF which is
1504 * unique because the kernel won't tell us if the file was opened or
1505 * created.
1506 */
1507 retry_open:
1508 fsp->fh->fd = onefs_sys_create_file(conn,
1509 -1,
1510 smb_dname->base_name,
1511 access_mask,
1512 access_mask,
1513 share_access,
1514 create_options,
1515 create_flags | O_DIRECTORY,
1516 mode,
1517 0,
1518 0,
1519 sd,
1520 file_attributes,
1521 NULL);
1522
1523 if (fsp->fh->fd == -1) {
1524 DEBUG(3, ("Error opening %s. Errno=%d (%s).\n",
1525 smb_fname_str_dbg(smb_dname), errno,
1526 strerror(errno)));
1527 SMB_ASSERT(errno != EINPROGRESS);
1528
1529 if (create_disposition == FILE_OPEN_IF) {
1530 if (errno == ENOENT) {
1531 /* Try again, creating it this time. */
1532 create_flags = O_CREAT | O_EXCL;
1533 info = FILE_WAS_CREATED;
1534 goto retry_open;
1535 } else if (errno == EEXIST) {
1536 /* Uggh. Try again again. */
1537 create_flags = 0;
1538 info = FILE_WAS_OPENED;
1539 goto retry_open;
1540 }
1541 }
1542
1543 /* Error cases below: */
1544 file_free(req, fsp);
1545
1546 if ((errno == ENOENT) && (create_disposition == FILE_OPEN)) {
1547 DEBUG(5, ("onefs_open_directory: FILE_OPEN requested "
1548 "for directory %s and it doesn't "
1549 "exist.\n", smb_fname_str_dbg(smb_dname)));
1550 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1551 } else if ((errno == EEXIST) &&
1552 (create_disposition == FILE_CREATE)) {
1553 DEBUG(5, ("onefs_open_directory: FILE_CREATE "
1554 "requested for directory %s and it "
1555 "already exists.\n",
1556 smb_fname_str_dbg(smb_dname)));
1557 return NT_STATUS_OBJECT_NAME_COLLISION;
1558 } else if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
1559 /* Catch sharing violations. */
1560 return NT_STATUS_SHARING_VIOLATION;
1561 }
1562
1563 return map_nt_error_from_unix(errno);
1564 }
1565
1566 if (info == FILE_WAS_CREATED) {
1567
1568 /* Pulled from mkdir_internal() */
1569 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
1570 DEBUG(2, ("Could not stat directory '%s' just "
1571 "created: %s\n",
1572 smb_fname_str_dbg(smb_dname),
1573 strerror(errno)));
1574 return map_nt_error_from_unix(errno);
1575 }
1576
1577 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
1578 DEBUG(0, ("Directory just '%s' created is not a "
1579 "directory\n",
1580 smb_fname_str_dbg(smb_dname)));
1581 return NT_STATUS_ACCESS_DENIED;
1582 }
1583
1584 if (!posix_open) {
1585 /*
1586 * Check if high bits should have been set, then (if
1587 * bits are missing): add them. Consider bits
1588 * automagically set by UNIX, i.e. SGID bit from
1589 * parent dir.
1590 */
1591 if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) &&
1592 (mode & ~smb_dname->st.st_ex_mode)) {
1593 SMB_VFS_CHMOD(conn, smb_dname->base_name,
1594 (smb_dname->st.st_ex_mode |
1595 (mode & ~smb_dname->st.st_ex_mode)));
1596 }
1597 }
1598
1599 /* Change the owner if required. */
1600 if (lp_inherit_owner(SNUM(conn))) {
1601 change_dir_owner_to_parent(conn, parent_dir,
1602 smb_dname->base_name,
1603 &smb_dname->st);
1604 }
1605
1606 notify_fname(conn, NOTIFY_ACTION_ADDED,
1607 FILE_NOTIFY_CHANGE_DIR_NAME,
1608 smb_dname->base_name);
1609 }
1610
1611 /* Stat the fd for Samba bookkeeping. */
1612 if(SMB_VFS_FSTAT(fsp, &smb_dname->st) != 0) {
1613 fd_close(fsp);
1614 file_free(req, fsp);
1615 return map_nt_error_from_unix(errno);
1616 }
1617
1618 /* Setup the files_struct for it. */
1619 fsp->mode = smb_dname->st.st_ex_mode;
1620 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
1621 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
1622 fsp->file_pid = req ? req->smbpid : 0;
1623 fsp->can_lock = False;
1624 fsp->can_read = False;
1625 fsp->can_write = False;
1626
1627 fsp->share_access = share_access;
1628 fsp->fh->private_options = 0;
1629 /*
1630 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1631 */
1632 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1633 fsp->print_file = NULL;
1634 fsp->modified = False;
1635 fsp->oplock_type = NO_OPLOCK;
1636 fsp->sent_oplock_break = NO_BREAK_SENT;
1637 fsp->is_directory = True;
1638 fsp->posix_open = posix_open;
1639
1640 status = fsp_set_smb_fname(fsp, smb_dname);
1641 if (!NT_STATUS_IS_OK(status)) {
1642 fd_close(fsp);
1643 file_free(req, fsp);
1644 return status;
1645 }
1646
1647 mtimespec = smb_dname->st.st_ex_mtime;
1648
1649 /*
1650 * Still set the samba share mode lock for correct delete-on-close
1651 * semantics and to make smbstatus more useful.
1652 */
1653 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
1654 conn->connectpath, smb_dname, &mtimespec);
1655
1656 if (lck == NULL) {
1657 DEBUG(0, ("onefs_open_directory: Could not get share mode "
1658 "lock for %s\n", smb_fname_str_dbg(smb_dname)));
1659 fd_close(fsp);
1660 file_free(req, fsp);
1661 return NT_STATUS_SHARING_VIOLATION;
1662 }
1663
1664 if (lck->delete_on_close) {
1665 TALLOC_FREE(lck);
1666 fd_close(fsp);
1667 file_free(req, fsp);
1668 return NT_STATUS_DELETE_PENDING;
1669 }
1670
1671 set_share_mode(lck, fsp, get_current_uid(conn),
1672 req ? req->mid : 0, NO_OPLOCK);
1673
1674 /*
1675 * For directories the delete on close bit at open time seems
1676 * always to be honored on close... See test 19 in Samba4 BASE-DELETE.
1677 */
1678 if (create_options & FILE_DELETE_ON_CLOSE) {
1679 status = can_set_delete_on_close(fsp, 0);
1680 if (!NT_STATUS_IS_OK(status) &&
1681 !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
1682 TALLOC_FREE(lck);
1683 fd_close(fsp);
1684 file_free(req, fsp);
1685 return status;
1686 }
1687
1688 if (NT_STATUS_IS_OK(status)) {
1689 /* Note that here we set the *inital* delete on close flag,
1690 not the regular one. The magic gets handled in close. */
1691 fsp->initial_delete_on_close = True;
1692 }
1693 }
1694
1695 TALLOC_FREE(lck);
1696
1697 if (pinfo) {
1698 *pinfo = info;
1699 }
1700
1701 *result = fsp;
1702 return NT_STATUS_OK;
1703 }
1704
1705 /*
1706 * Wrapper around onefs_open_file_ntcreate and onefs_open_directory.
1707 */
1708 static NTSTATUS onefs_create_file_unixpath(connection_struct *conn,
1709 struct smb_request *req,
1710 struct smb_filename *smb_fname,
1711 uint32_t access_mask,
1712 uint32_t share_access,
1713 uint32_t create_disposition,
1714 uint32_t create_options,
1715 uint32_t file_attributes,
1716 uint32_t oplock_request,
1717 uint64_t allocation_size,
1718 uint32_t private_flags,
1719 struct security_descriptor *sd,
1720 struct ea_list *ea_list,
1721 files_struct **result,
1722 int *pinfo,
1723 struct onefs_fsp_data *fsp_data)
1724 {
1725 int info = FILE_WAS_OPENED;
1726 files_struct *base_fsp = NULL;
1727 files_struct *fsp = NULL;
1728 NTSTATUS status;
1729
1730 DEBUG(10,("onefs_create_file_unixpath: access_mask = 0x%x "
1731 "file_attributes = 0x%x, share_access = 0x%x, "
1732 "create_disposition = 0x%x create_options = 0x%x "
1733 "oplock_request = 0x%x private_flags = 0x%x "
1734 "ea_list = 0x%p, sd = 0x%p, "
1735 "fname = %s\n",
1736 (unsigned int)access_mask,
1737 (unsigned int)file_attributes,
1738 (unsigned int)share_access,
1739 (unsigned int)create_disposition,
1740 (unsigned int)create_options,
1741 (unsigned int)oplock_request,
1742 (unsigned int)private_flags,
1743 ea_list, sd, smb_fname_str_dbg(smb_fname)));
1744
1745 if (create_options & FILE_OPEN_BY_FILE_ID) {
1746 status = NT_STATUS_NOT_SUPPORTED;
1747 goto fail;
1748 }
1749
1750 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
1751 status = NT_STATUS_INVALID_PARAMETER;
1752 goto fail;
1753 }
1754
1755 if (req == NULL) {
1756 SMB_ASSERT((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) ==
1757 NO_OPLOCK);
1758 oplock_request |= INTERNAL_OPEN_ONLY;
1759 }
1760
1761 if (lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE,
1762 PARM_IGNORE_SACLS, PARM_IGNORE_SACLS_DEFAULT)) {
1763 access_mask &= ~SYSTEM_SECURITY_ACCESS;
1764 }
1765
1766 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1767 && (access_mask & DELETE_ACCESS)
1768 && !is_ntfs_stream_smb_fname(smb_fname)) {
1769 /*
1770 * We can't open a file with DELETE access if any of the
1771 * streams is open without FILE_SHARE_DELETE
1772 */
1773 status = open_streams_for_delete(conn, smb_fname->base_name);
1774
1775 if (!NT_STATUS_IS_OK(status)) {
1776 goto fail;
1777 }
1778 }
1779
1780 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1781 && is_ntfs_stream_smb_fname(smb_fname)) {
1782 uint32 base_create_disposition;
1783 struct smb_filename *smb_fname_base = NULL;
1784
1785 if (create_options & FILE_DIRECTORY_FILE) {
1786 status = NT_STATUS_NOT_A_DIRECTORY;
1787 goto fail;
1788 }
1789
1790 switch (create_disposition) {
1791 case FILE_OPEN:
1792 base_create_disposition = FILE_OPEN;
1793 break;
1794 default:
1795 base_create_disposition = FILE_OPEN_IF;
1796 break;
1797 }
1798
1799 /* Create an smb_filename with stream_name == NULL. */
1800 status = create_synthetic_smb_fname(talloc_tos(),
1801 smb_fname->base_name,
1802 NULL, NULL,
1803 &smb_fname_base);
1804 if (!NT_STATUS_IS_OK(status)) {
1805 goto fail;
1806 }
1807
1808 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
1809 DEBUG(10, ("Unable to stat stream: %s\n",
1810 smb_fname_str_dbg(smb_fname_base)));
1811 }
1812
1813 status = onefs_create_file_unixpath(
1814 conn, /* conn */
1815 NULL, /* req */
1816 smb_fname_base, /* fname */
1817 SYNCHRONIZE_ACCESS, /* access_mask */
1818 (FILE_SHARE_READ |
1819 FILE_SHARE_WRITE |
1820 FILE_SHARE_DELETE), /* share_access */
1821 base_create_disposition, /* create_disposition*/
1822 0, /* create_options */
1823 file_attributes, /* file_attributes */
1824 NO_OPLOCK, /* oplock_request */
1825 0, /* allocation_size */
1826 0, /* private_flags */
1827 NULL, /* sd */
1828 NULL, /* ea_list */
1829 &base_fsp, /* result */
1830 NULL, /* pinfo */
1831 NULL); /* fsp_data */
1832
1833 TALLOC_FREE(smb_fname_base);
1834
1835 if (!NT_STATUS_IS_OK(status)) {
1836 DEBUG(10, ("onefs_create_file_unixpath for base %s "
1837 "failed: %s\n", smb_fname->base_name,
1838 nt_errstr(status)));
1839 goto fail;
1840 }
1841
1842 /*
1843 * Testing against windows xp/2003/vista shows that oplocks
1844 * can actually be requested and granted on streams (see the
1845 * RAW-OPLOCK-STREAM1 smbtorture test).
1846 */
1847 if ((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) !=
1848 NO_OPLOCK) {
1849 DEBUG(5, ("Oplock(%d) being requested on a stream! "
1850 "Ignoring oplock request: fname=%s\n",
1851 oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK,
1852 smb_fname_str_dbg(smb_fname)));
1853 /* Request NO_OPLOCK instead. */
1854 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1855 }
1856 }
1857
1858 /* Covert generic bits in the security descriptor. */
1859 if (sd != NULL) {
1860 security_acl_map_generic(sd->dacl, &file_generic_mapping);
1861 security_acl_map_generic(sd->sacl, &file_generic_mapping);
1862 }
1863
1864 /*
1865 * If it's a request for a directory open, deal with it separately.
1866 */
1867
1868 if (create_options & FILE_DIRECTORY_FILE) {
1869
1870 if (create_options & FILE_NON_DIRECTORY_FILE) {
1871 status = NT_STATUS_INVALID_PARAMETER;
1872 goto fail;
1873 }
1874
1875 /* Can't open a temp directory. IFS kit test. */
1876 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1877 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
1878 status = NT_STATUS_INVALID_PARAMETER;
1879 goto fail;
1880 }
1881
1882 /*
1883 * We will get a create directory here if the Win32
1884 * app specified a security descriptor in the
1885 * CreateDirectory() call.
1886 */
1887
1888 status = onefs_open_directory(
1889 conn, /* conn */
1890 req, /* req */
1891 smb_fname, /* fname */
1892 access_mask, /* access_mask */
1893 share_access, /* share_access */
1894 create_disposition, /* create_disposition*/
1895 create_options, /* create_options */
1896 file_attributes, /* file_attributes */
1897 sd, /* sd */
1898 &fsp, /* result */
1899 &info); /* pinfo */
1900 } else {
1901
1902 /*
1903 * Ordinary file case.
1904 */
1905
1906 status = file_new(req, conn, &fsp);
1907 if(!NT_STATUS_IS_OK(status)) {
1908 goto fail;
1909 }
1910
1911 /*
1912 * We're opening the stream element of a base_fsp
1913 * we already opened. Set up the base_fsp pointer.
1914 */
1915 if (base_fsp) {
1916 fsp->base_fsp = base_fsp;
1917 }
1918
1919 status = onefs_open_file_ntcreate(
1920 conn, /* conn */
1921 req, /* req */
1922 smb_fname, /* fname */
1923 access_mask, /* access_mask */
1924 share_access, /* share_access */
1925 create_disposition, /* create_disposition*/
1926 create_options, /* create_options */
1927 file_attributes, /* file_attributes */
1928 oplock_request, /* oplock_request */
1929 sd, /* sd */
1930 fsp, /* result */
1931 &info, /* pinfo */
1932 fsp_data); /* fsp_data */
1933
1934 if(!NT_STATUS_IS_OK(status)) {
1935 file_free(req, fsp);
1936 fsp = NULL;
1937 }
1938
1939 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
1940
1941 /* A stream open never opens a directory */
1942
1943 if (base_fsp) {
1944 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1945 goto fail;
1946 }
1947
1948 /*
1949 * Fail the open if it was explicitly a non-directory
1950 * file.
1951 */
1952
1953 if (create_options & FILE_NON_DIRECTORY_FILE) {
1954 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1955 goto fail;
1956 }
1957
1958 create_options |= FILE_DIRECTORY_FILE;
1959
1960 status = onefs_open_directory(
1961 conn, /* conn */
1962 req, /* req */
1963 smb_fname, /* fname */
1964 access_mask, /* access_mask */
1965 share_access, /* share_access */
1966 create_disposition, /* create_disposition*/
1967 create_options, /* create_options */
1968 file_attributes, /* file_attributes */
1969 sd, /* sd */
1970 &fsp, /* result */
1971 &info); /* pinfo */
1972 }
1973 }
1974
1975 if (!NT_STATUS_IS_OK(status)) {
1976 goto fail;
1977 }
1978
1979 fsp->base_fsp = base_fsp;
1980
1981 SMB_ASSERT(fsp);
1982
1983 if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
1984 status = set_ea(conn, fsp, smb_fname, ea_list);
1985 if (!NT_STATUS_IS_OK(status)) {
1986 goto fail;
1987 }
1988 }
1989
1990 if (!fsp->is_directory && S_ISDIR(smb_fname->st.st_ex_mode)) {
1991 status = NT_STATUS_ACCESS_DENIED;
1992 goto fail;
1993 }
1994
1995 /* Save the requested allocation size. */
1996 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
1997 if (allocation_size
1998 && (allocation_size > smb_fname->st.st_ex_size)) {
1999 fsp->initial_allocation_size = smb_roundup(
2000 fsp->conn, allocation_size);
2001 if (fsp->is_directory) {
2002 /* Can't set allocation size on a directory. */
2003 status = NT_STATUS_ACCESS_DENIED;
2004 goto fail;
2005 }
2006 if (vfs_allocate_file_space(
2007 fsp, fsp->initial_allocation_size) == -1) {
2008 status = NT_STATUS_DISK_FULL;
2009 goto fail;
2010 }
2011 } else {
2012 fsp->initial_allocation_size = smb_roundup(
2013 fsp->conn, (uint64_t)smb_fname->st.st_ex_size);
2014 }
2015 }
2016
2017 DEBUG(10, ("onefs_create_file_unixpath: info=%d\n", info));
2018
2019 *result = fsp;
2020 if (pinfo != NULL) {
2021 *pinfo = info;
2022 }
2023 if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
2024 SMB_VFS_FSTAT(fsp, &smb_fname->st);
2025 }
2026 return NT_STATUS_OK;
2027
2028 fail:
2029 DEBUG(10, ("onefs_create_file_unixpath: %s\n", nt_errstr(status)));
2030
2031 if (fsp != NULL) {
2032 if (base_fsp && fsp->base_fsp == base_fsp) {
2033 /*
2034 * The close_file below will close
2035 * fsp->base_fsp.
2036 */
2037 base_fsp = NULL;
2038 }
2039 close_file(req, fsp, ERROR_CLOSE);
2040 fsp = NULL;
2041 }
2042 if (base_fsp != NULL) {
2043 close_file(req, base_fsp, ERROR_CLOSE);
2044 base_fsp = NULL;
2045 }
2046 return status;
2047 }
2048
2049 static void destroy_onefs_fsp_data(void *p_data)
2050 {
2051 struct onefs_fsp_data *fsp_data = (struct onefs_fsp_data *)p_data;
2052
2053 destroy_onefs_callback_record(fsp_data->oplock_callback_id);
2054 }
2055
2056 /**
2057 * SMB_VFS_CREATE_FILE interface to onefs.
2058 */
2059 NTSTATUS onefs_create_file(vfs_handle_struct *handle,
2060 struct smb_request *req,
2061 uint16_t root_dir_fid,
2062 struct smb_filename *smb_fname,
2063 uint32_t access_mask,
2064 uint32_t share_access,
2065 uint32_t create_disposition,
2066 uint32_t create_options,
2067 uint32_t file_attributes,
2068 uint32_t oplock_request,
2069 uint64_t allocation_size,
2070 uint32_t private_flags,
2071 struct security_descriptor *sd,
2072 struct ea_list *ea_list,
2073 files_struct **result,
2074 int *pinfo)
2075 {
2076 connection_struct *conn = handle->conn;
2077 struct onefs_fsp_data fsp_data = {};
2078 int info = FILE_WAS_OPENED;
2079 files_struct *fsp = NULL;
2080 NTSTATUS status;
2081
2082 DEBUG(10,("onefs_create_file: access_mask = 0x%x "
2083 "file_attributes = 0x%x, share_access = 0x%x, "
2084 "create_disposition = 0x%x create_options = 0x%x "
2085 "oplock_request = 0x%x private_flags = 0x%x"
2086 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
2087 "fname = %s\n",
2088 (unsigned int)access_mask,
2089 (unsigned int)file_attributes,
2090 (unsigned int)share_access,
2091 (unsigned int)create_disposition,
2092 (unsigned int)create_options,
2093 (unsigned int)oplock_request,
2094 (unsigned int)private_flags,
2095 (unsigned int)root_dir_fid,
2096 ea_list, sd, smb_fname_str_dbg(smb_fname)));
2097
2098 /* Get the file name if root_dir_fid was specified. */
2099 if (root_dir_fid != 0) {
2100 struct smb_filename *smb_fname_out = NULL;
2101 status = get_relative_fid_filename(conn, req, root_dir_fid,
2102 smb_fname, &smb_fname_out);
2103 if (!NT_STATUS_IS_OK(status)) {
2104 goto fail;
2105 }
2106 smb_fname = smb_fname_out;
2107 }
2108
2109 /* All file access must go through check_name() */
2110 status = check_name(conn, smb_fname->base_name);
2111 if (!NT_STATUS_IS_OK(status)) {
2112 goto fail;
2113 }
2114
2115 if (is_ntfs_stream_smb_fname(smb_fname)) {
2116 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
2117 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2118 goto fail;
2119 }
2120
2121 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
2122 int ret;
2123 smb_fname->stream_name = NULL;
2124 /* We have to handle this error here. */
2125 if (create_options & FILE_DIRECTORY_FILE) {
2126 status = NT_STATUS_NOT_A_DIRECTORY;
2127 goto fail;
2128 }
2129 if (lp_posix_pathnames()) {
2130 ret = SMB_VFS_LSTAT(conn, smb_fname);
2131 } else {
2132 ret = SMB_VFS_STAT(conn, smb_fname);
2133 }
2134
2135 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
2136 status = NT_STATUS_FILE_IS_A_DIRECTORY;
2137 goto fail;
2138 }
2139 }
2140 }
2141
2142 status = onefs_create_file_unixpath(
2143 conn, /* conn */
2144 req, /* req */
2145 smb_fname, /* fname */
2146 access_mask, /* access_mask */
2147 share_access, /* share_access */
2148 create_disposition, /* create_disposition*/
2149 create_options, /* create_options */
2150 file_attributes, /* file_attributes */
2151 oplock_request, /* oplock_request */
2152 allocation_size, /* allocation_size */
2153 private_flags,
2154 sd, /* sd */
2155 ea_list, /* ea_list */
2156 &fsp, /* result */
2157 &info, /* pinfo */
2158 &fsp_data); /* psbuf */
2159
2160 if (!NT_STATUS_IS_OK(status)) {
2161 goto fail;
2162 }
2163
2164 DEBUG(10, ("onefs_create_file: info=%d\n", info));
2165
2166 /*
2167 * Setup private onefs_fsp_data. Currently the private data struct is
2168 * only used to store the oplock_callback_id so that when the file is
2169 * closed, the onefs_callback_record can be properly cleaned up in the
2170 * oplock_onefs sub-system.
2171 */
2172 if (fsp) {
2173 struct onefs_fsp_data *fsp_data_tmp = NULL;
2174 fsp_data_tmp = (struct onefs_fsp_data *)
2175 VFS_ADD_FSP_EXTENSION(handle, fsp, struct onefs_fsp_data,
2176 &destroy_onefs_fsp_data);
2177
2178 if (fsp_data_tmp == NULL) {
2179 status = NT_STATUS_NO_MEMORY;
2180 goto fail;
2181 }
2182
2183 *fsp_data_tmp = fsp_data;
2184 }
2185
2186 *result = fsp;
2187 if (pinfo != NULL) {
2188 *pinfo = info;
2189 }
2190 return NT_STATUS_OK;
2191
2192 fail:
2193 DEBUG(10, ("onefs_create_file: %s\n", nt_errstr(status)));
2194
2195 if (fsp != NULL) {
2196 close_file(req, fsp, ERROR_CLOSE);
2197 fsp = NULL;
2198 }
2199 return status;
2200 }
reg import