source: vendor/3.6.9/source3/modules/onefs_streams.c

Last change on this file was 746, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated vendor to 3.6.9
File size: 19.2 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 *
4 * Support for OneFS Alternate Data Streams
5 *
6 * Copyright (C) Tim Prouty, 2008
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "includes.h"
23#include "smbd/smbd.h"
24#include "onefs.h"
25#include "onefs_config.h"
26
27#include <sys/isi_enc.h>
28
29NTSTATUS onefs_stream_prep_smb_fname(TALLOC_CTX *ctx,
30 const struct smb_filename *smb_fname_in,
31 struct smb_filename **smb_fname_out)
32{
33 char *stream_name = NULL;
34 NTSTATUS status;
35
36 /*
37 * Only attempt to strip off the trailing :$DATA if there is an actual
38 * stream there. If it is the default stream, the smb_fname_out will
39 * just have a NULL stream so the base file is opened.
40 */
41 if (smb_fname_in->stream_name &&
42 !is_ntfs_default_stream_smb_fname(smb_fname_in)) {
43 char *str_tmp = smb_fname_in->stream_name;
44
45 /* First strip off the leading ':' */
46 if (str_tmp[0] == ':') {
47 str_tmp++;
48 }
49
50 /* Create a new copy of the stream_name. */
51 stream_name = talloc_strdup(ctx, str_tmp);
52 if (stream_name == NULL) {
53 return NT_STATUS_NO_MEMORY;
54 }
55
56 /* Strip off the :$DATA if one exists. */
57 str_tmp = strrchr_m(stream_name, ':');
58 if (str_tmp) {
59 if (StrCaseCmp(str_tmp, ":$DATA") != 0) {
60 return NT_STATUS_INVALID_PARAMETER;
61 }
62 str_tmp[0] = '\0';
63 }
64 }
65
66 /*
67 * If there was a stream that wasn't the default stream the leading
68 * colon and trailing :$DATA has now been stripped off. Create a new
69 * smb_filename to pass back.
70 */
71 status = create_synthetic_smb_fname(ctx, smb_fname_in->base_name,
72 stream_name, &smb_fname_in->st,
73 smb_fname_out);
74 TALLOC_FREE(stream_name);
75
76 if (!NT_STATUS_IS_OK(status)) {
77 DEBUG(5, ("Failed to prep stream name for %s: %s\n",
78 *smb_fname_out ?
79 smb_fname_str_dbg(*smb_fname_out) : "NULL",
80 nt_errstr(status)));
81 }
82 return status;
83}
84
85int onefs_close(vfs_handle_struct *handle, struct files_struct *fsp)
86{
87 int ret2, ret = 0;
88
89 if (fsp->base_fsp) {
90 ret = SMB_VFS_NEXT_CLOSE(handle, fsp->base_fsp);
91 }
92 ret2 = SMB_VFS_NEXT_CLOSE(handle, fsp);
93
94 return ret ? ret : ret2;
95}
96
97/*
98 * Get the ADS directory fd for a file.
99 */
100static int get_stream_dir_fd(connection_struct *conn, const char *base,
101 int *base_fdp)
102{
103 int base_fd;
104 int dir_fd;
105 int saved_errno;
106
107 DEBUG(10, ("Getting stream directory fd: %s (%d)\n", base,
108 base_fdp ? *base_fdp : -1));
109
110 /* If a valid base_fdp was given, use it. */
111 if (base_fdp && *base_fdp >= 0) {
112 base_fd = *base_fdp;
113 } else {
114 base_fd = onefs_sys_create_file(conn,
115 -1,
116 base,
117 0,
118 0,
119 0,
120 0,
121 0,
122 0,
123 INTERNAL_OPEN_ONLY,
124 0,
125 NULL,
126 0,
127 NULL);
128 if (base_fd < 0) {
129 DEBUG(5, ("Failed getting base fd: %s\n",
130 strerror(errno)));
131 return -1;
132 }
133 }
134
135 /* Open the ADS directory. */
136 dir_fd = onefs_sys_create_file(conn,
137 base_fd,
138 ".",
139 0,
140 FILE_READ_DATA,
141 0,
142 0,
143 0,
144 0,
145 INTERNAL_OPEN_ONLY,
146 0,
147 NULL,
148 0,
149 NULL);
150
151 /* Close base_fd if it's not need or on error. */
152 if (!base_fdp || dir_fd < 0) {
153 saved_errno = errno;
154 close(base_fd);
155 errno = saved_errno;
156 }
157
158 /* Set the out base_fdp if successful and it was requested. */
159 if (base_fdp && dir_fd >= 0) {
160 *base_fdp = base_fd;
161 }
162
163 if (dir_fd < 0) {
164 DEBUG(5, ("Failed getting stream directory fd: %s\n",
165 strerror(errno)));
166 }
167
168 return dir_fd;
169}
170
171int onefs_rename(vfs_handle_struct *handle,
172 const struct smb_filename *smb_fname_src,
173 const struct smb_filename *smb_fname_dst)
174{
175 struct smb_filename *smb_fname_src_onefs = NULL;
176 struct smb_filename *smb_fname_dst_onefs = NULL;
177 NTSTATUS status;
178 int saved_errno;
179 int dir_fd = -1;
180 int ret = -1;
181
182 START_PROFILE(syscall_rename_at);
183
184 if (!is_ntfs_stream_smb_fname(smb_fname_src) &&
185 !is_ntfs_stream_smb_fname(smb_fname_dst)) {
186 ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src,
187 smb_fname_dst);
188 goto done;
189 }
190
191 /* For now don't allow renames from or to the default stream. */
192 if (is_ntfs_default_stream_smb_fname(smb_fname_src) ||
193 is_ntfs_default_stream_smb_fname(smb_fname_dst)) {
194 DEBUG(3, ("Unable to rename to/from a default stream: %s -> "
195 "%s\n", smb_fname_str_dbg(smb_fname_src),
196 smb_fname_str_dbg(smb_fname_dst)));
197 errno = ENOSYS;
198 goto done;
199 }
200
201 /* prep stream smb_filename structs. */
202 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname_src,
203 &smb_fname_src_onefs);
204 if (!NT_STATUS_IS_OK(status)) {
205 errno = map_errno_from_nt_status(status);
206 goto done;
207 }
208 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname_dst,
209 &smb_fname_dst_onefs);
210 if (!NT_STATUS_IS_OK(status)) {
211 errno = map_errno_from_nt_status(status);
212 goto done;
213 }
214
215 dir_fd = get_stream_dir_fd(handle->conn, smb_fname_src->base_name,
216 NULL);
217 if (dir_fd < -1) {
218 goto done;
219 }
220
221 DEBUG(8, ("onefs_rename called for %s => %s\n",
222 smb_fname_str_dbg(smb_fname_src_onefs),
223 smb_fname_str_dbg(smb_fname_dst_onefs)));
224
225 /* Handle rename of stream to default stream specially. */
226 if (smb_fname_dst_onefs->stream_name == NULL) {
227 ret = enc_renameat(dir_fd, smb_fname_src_onefs->stream_name,
228 ENC_DEFAULT, AT_FDCWD,
229 smb_fname_dst_onefs->base_name,
230 ENC_DEFAULT);
231 } else {
232 ret = enc_renameat(dir_fd, smb_fname_src_onefs->stream_name,
233 ENC_DEFAULT, dir_fd,
234 smb_fname_dst_onefs->stream_name,
235 ENC_DEFAULT);
236 }
237
238 done:
239 END_PROFILE(syscall_rename_at);
240 TALLOC_FREE(smb_fname_src_onefs);
241 TALLOC_FREE(smb_fname_dst_onefs);
242
243 saved_errno = errno;
244 if (dir_fd >= 0) {
245 close(dir_fd);
246 }
247 errno = saved_errno;
248 return ret;
249}
250
251/*
252 * Merge a base file's sbuf into the a streams's sbuf.
253 */
254static void merge_stat(SMB_STRUCT_STAT *stream_sbuf,
255 const SMB_STRUCT_STAT *base_sbuf)
256{
257 int dos_flags = (UF_DOS_NOINDEX | UF_DOS_ARCHIVE |
258 UF_DOS_HIDDEN | UF_DOS_RO | UF_DOS_SYSTEM);
259 stream_sbuf->st_ex_mtime = base_sbuf->st_ex_mtime;
260 stream_sbuf->st_ex_ctime = base_sbuf->st_ex_ctime;
261 stream_sbuf->st_ex_atime = base_sbuf->st_ex_atime;
262 stream_sbuf->st_ex_flags &= ~dos_flags;
263 stream_sbuf->st_ex_flags |= base_sbuf->st_ex_flags & dos_flags;
264}
265
266/* fake timestamps */
267static void onefs_adjust_stat_time(struct connection_struct *conn,
268 const char *fname, SMB_STRUCT_STAT *sbuf)
269{
270 struct onefs_vfs_share_config cfg;
271 struct timeval tv_now = {0, 0};
272 bool static_mtime = False;
273 bool static_atime = False;
274
275 if (!onefs_get_config(SNUM(conn),
276 ONEFS_VFS_CONFIG_FAKETIMESTAMPS, &cfg)) {
277 return;
278 }
279
280 if (IS_MTIME_STATIC_PATH(conn, &cfg, fname)) {
281 sbuf->st_ex_mtime = sbuf->st_ex_btime;
282 static_mtime = True;
283 }
284 if (IS_ATIME_STATIC_PATH(conn, &cfg, fname)) {
285 sbuf->st_ex_atime = sbuf->st_ex_btime;
286 static_atime = True;
287 }
288
289 if (IS_CTIME_NOW_PATH(conn, &cfg, fname)) {
290 if (cfg.ctime_slop < 0) {
291 sbuf->st_ex_btime.tv_sec = INT_MAX - 1;
292 } else {
293 GetTimeOfDay(&tv_now);
294 sbuf->st_ex_btime.tv_sec = tv_now.tv_sec +
295 cfg.ctime_slop;
296 }
297 }
298
299 if (!static_mtime && IS_MTIME_NOW_PATH(conn,&cfg,fname)) {
300 if (cfg.mtime_slop < 0) {
301 sbuf->st_ex_mtime.tv_sec = INT_MAX - 1;
302 } else {
303 if (tv_now.tv_sec == 0)
304 GetTimeOfDay(&tv_now);
305 sbuf->st_ex_mtime.tv_sec = tv_now.tv_sec +
306 cfg.mtime_slop;
307 }
308 }
309 if (!static_atime && IS_ATIME_NOW_PATH(conn,&cfg,fname)) {
310 if (cfg.atime_slop < 0) {
311 sbuf->st_ex_atime.tv_sec = INT_MAX - 1;
312 } else {
313 if (tv_now.tv_sec == 0)
314 GetTimeOfDay(&tv_now);
315 sbuf->st_ex_atime.tv_sec = tv_now.tv_sec +
316 cfg.atime_slop;
317 }
318 }
319}
320
321static int stat_stream(struct connection_struct *conn, const char *base,
322 const char *stream, SMB_STRUCT_STAT *sbuf, int flags)
323{
324 SMB_STRUCT_STAT base_sbuf;
325 int base_fd = -1, dir_fd, ret, saved_errno;
326
327 dir_fd = get_stream_dir_fd(conn, base, &base_fd);
328 if (dir_fd < 0) {
329 return -1;
330 }
331
332 /* Stat the stream. */
333 ret = onefs_sys_fstat_at(dir_fd, stream, sbuf, flags);
334 if (ret != -1) {
335 DEBUG(10, ("stat of stream '%s' failed: %s\n", stream,
336 strerror(errno)));
337 } else {
338 /* Now stat the base file and merge the results. */
339 ret = onefs_sys_fstat(base_fd, &base_sbuf);
340 if (ret != -1) {
341 merge_stat(sbuf, &base_sbuf);
342 }
343 }
344
345 saved_errno = errno;
346 close(dir_fd);
347 close(base_fd);
348 errno = saved_errno;
349 return ret;
350}
351
352int onefs_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
353{
354 struct smb_filename *smb_fname_onefs = NULL;
355 NTSTATUS status;
356 int ret;
357
358 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
359 &smb_fname_onefs);
360 if (!NT_STATUS_IS_OK(status)) {
361 errno = map_errno_from_nt_status(status);
362 return -1;
363 }
364
365 /*
366 * If the smb_fname has no stream or is :$DATA, then just stat the
367 * base stream. Otherwise stat the stream.
368 */
369 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
370 ret = onefs_sys_stat(smb_fname_onefs->base_name,
371 &smb_fname->st);
372 } else {
373 ret = stat_stream(handle->conn, smb_fname_onefs->base_name,
374 smb_fname_onefs->stream_name, &smb_fname->st,
375 0);
376 }
377
378 onefs_adjust_stat_time(handle->conn, smb_fname->base_name,
379 &smb_fname->st);
380
381 TALLOC_FREE(smb_fname_onefs);
382
383 return ret;
384}
385
386int onefs_fstat(vfs_handle_struct *handle, struct files_struct *fsp,
387 SMB_STRUCT_STAT *sbuf)
388{
389 SMB_STRUCT_STAT base_sbuf;
390 int ret;
391
392 /* Stat the stream, by calling next_fstat on the stream's fd. */
393 ret = onefs_sys_fstat(fsp->fh->fd, sbuf);
394 if (ret == -1) {
395 return ret;
396 }
397
398 /* Stat the base file and merge the results. */
399 if (fsp != NULL && fsp->base_fsp != NULL) {
400 ret = onefs_sys_fstat(fsp->base_fsp->fh->fd, &base_sbuf);
401 if (ret != -1) {
402 merge_stat(sbuf, &base_sbuf);
403 }
404 }
405
406 onefs_adjust_stat_time(handle->conn, fsp->fsp_name->base_name, sbuf);
407 return ret;
408}
409
410int onefs_lstat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
411{
412 struct smb_filename *smb_fname_onefs = NULL;
413 NTSTATUS status;
414 int ret;
415
416 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
417 &smb_fname_onefs);
418 if (!NT_STATUS_IS_OK(status)) {
419 errno = map_errno_from_nt_status(status);
420 return -1;
421 }
422
423 /*
424 * If the smb_fname has no stream or is :$DATA, then just stat the
425 * base stream. Otherwise stat the stream.
426 */
427 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
428 ret = onefs_sys_lstat(smb_fname_onefs->base_name,
429 &smb_fname->st);
430 } else {
431 ret = stat_stream(handle->conn, smb_fname_onefs->base_name,
432 smb_fname_onefs->stream_name, &smb_fname->st,
433 AT_SYMLINK_NOFOLLOW);
434 }
435
436 onefs_adjust_stat_time(handle->conn, smb_fname->base_name,
437 &smb_fname->st);
438
439 TALLOC_FREE(smb_fname_onefs);
440
441 return ret;
442}
443
444int onefs_unlink(vfs_handle_struct *handle,
445 const struct smb_filename *smb_fname)
446{
447 struct smb_filename *smb_fname_onefs = NULL;
448 int ret;
449 int dir_fd, saved_errno;
450 NTSTATUS status;
451
452 /* Not a stream. */
453 if (!is_ntfs_stream_smb_fname(smb_fname)) {
454 return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
455 }
456
457 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
458 &smb_fname_onefs);
459 if (!NT_STATUS_IS_OK(status)) {
460 errno = map_errno_from_nt_status(status);
461 return -1;
462 }
463
464 /* Default stream (the ::$DATA was just stripped off). */
465 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
466 ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_onefs);
467 goto out;
468 }
469
470 dir_fd = get_stream_dir_fd(handle->conn, smb_fname_onefs->base_name,
471 NULL);
472 if (dir_fd < 0) {
473 ret = -1;
474 goto out;
475 }
476
477 ret = enc_unlinkat(dir_fd, smb_fname_onefs->stream_name, ENC_DEFAULT,
478 0);
479
480 saved_errno = errno;
481 close(dir_fd);
482 errno = saved_errno;
483 out:
484 TALLOC_FREE(smb_fname_onefs);
485 return ret;
486}
487
488int onefs_vtimes_streams(vfs_handle_struct *handle,
489 const struct smb_filename *smb_fname,
490 int flags, struct timespec times[3])
491{
492 struct smb_filename *smb_fname_onefs = NULL;
493 int ret;
494 int dirfd;
495 int saved_errno;
496 NTSTATUS status;
497
498 START_PROFILE(syscall_ntimes);
499
500 if (!is_ntfs_stream_smb_fname(smb_fname)) {
501 ret = vtimes(smb_fname->base_name, times, flags);
502 return ret;
503 }
504
505 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
506 &smb_fname_onefs);
507 if (!NT_STATUS_IS_OK(status)) {
508 errno = map_errno_from_nt_status(status);
509 return -1;
510 }
511
512 /* Default stream (the ::$DATA was just stripped off). */
513 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
514 ret = vtimes(smb_fname_onefs->base_name, times, flags);
515 goto out;
516 }
517
518 dirfd = get_stream_dir_fd(handle->conn, smb_fname->base_name, NULL);
519 if (dirfd < -1) {
520 ret = -1;
521 goto out;
522 }
523
524 ret = enc_vtimesat(dirfd, smb_fname_onefs->stream_name, ENC_DEFAULT,
525 times, flags);
526
527 saved_errno = errno;
528 close(dirfd);
529 errno = saved_errno;
530
531 out:
532 END_PROFILE(syscall_ntimes);
533 TALLOC_FREE(smb_fname_onefs);
534 return ret;
535}
536
537/*
538 * Streaminfo enumeration functionality
539 */
540struct streaminfo_state {
541 TALLOC_CTX *mem_ctx;
542 vfs_handle_struct *handle;
543 unsigned int num_streams;
544 struct stream_struct *streams;
545 NTSTATUS status;
546};
547
548static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,
549 struct stream_struct **streams,
550 const char *name, SMB_OFF_T size,
551 SMB_OFF_T alloc_size)
552{
553 struct stream_struct *tmp;
554
555 tmp = TALLOC_REALLOC_ARRAY(mem_ctx, *streams, struct stream_struct,
556 (*num_streams)+1);
557 if (tmp == NULL) {
558 return false;
559 }
560
561 tmp[*num_streams].name = talloc_asprintf(mem_ctx, ":%s:%s", name,
562 "$DATA");
563 if (tmp[*num_streams].name == NULL) {
564 return false;
565 }
566
567 tmp[*num_streams].size = size;
568 tmp[*num_streams].alloc_size = alloc_size;
569
570 *streams = tmp;
571 *num_streams += 1;
572 return true;
573}
574
575static NTSTATUS walk_onefs_streams(connection_struct *conn, files_struct *fsp,
576 const char *fname,
577 struct streaminfo_state *state,
578 SMB_STRUCT_STAT *base_sbuf)
579{
580 NTSTATUS status = NT_STATUS_OK;
581 bool opened_base_fd = false;
582 int base_fd = -1;
583 int dir_fd = -1;
584 int stream_fd = -1;
585 int ret;
586 SMB_STRUCT_DIR *dirp = NULL;
587 SMB_STRUCT_DIRENT *dp = NULL;
588 files_struct fake_fs;
589 struct fd_handle fake_fh;
590 SMB_STRUCT_STAT stream_sbuf;
591
592 ZERO_STRUCT(fake_fh);
593 ZERO_STRUCT(fake_fs);
594
595 /* If the base file is already open, use its fd. */
596 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
597 base_fd = fsp->fh->fd;
598 } else {
599 opened_base_fd = true;
600 }
601
602 dir_fd = get_stream_dir_fd(conn, fname, &base_fd);
603 if (dir_fd < 0) {
604 return map_nt_error_from_unix(errno);
605 }
606
607 /* Open the ADS directory. */
608 if ((dirp = fdopendir(dir_fd)) == NULL) {
609 DEBUG(0, ("Error on opendir %s. errno=%d (%s)\n",
610 fname, errno, strerror(errno)));
611 status = map_nt_error_from_unix(errno);
612 goto out;
613 }
614
615 /* Initialize the dir state struct and add it to the list.
616 * This is a layer violation, and really should be handled by a
617 * VFS_FDOPENDIR() call which would properly setup the dir state.
618 * But since this is all within the onefs.so module, we cheat for
619 * now and call directly into the readdirplus code.
620 * NOTE: This state MUST be freed by a proper VFS_CLOSEDIR() call. */
621 ret = onefs_rdp_add_dir_state(conn, dirp);
622 if (ret) {
623 DEBUG(0, ("Error adding dir_state to the list\n"));
624 status = map_nt_error_from_unix(errno);
625 goto out;
626 }
627
628 fake_fs.conn = conn;
629 fake_fs.fh = &fake_fh;
630 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL, NULL,
631 &fake_fs.fsp_name);
632 if (!NT_STATUS_IS_OK(status)) {
633 goto out;
634 }
635
636 /* Iterate over the streams in the ADS directory. */
637 while ((dp = SMB_VFS_READDIR(conn, dirp, NULL)) != NULL) {
638 /* Skip the "." and ".." entries */
639 if ((strcmp(dp->d_name, ".") == 0) ||
640 (strcmp(dp->d_name, "..") == 0))
641 continue;
642
643 /* Open actual stream */
644 if ((stream_fd = onefs_sys_create_file(conn,
645 base_fd,
646 dp->d_name,
647 0,
648 0,
649 0,
650 0,
651 0,
652 0,
653 INTERNAL_OPEN_ONLY,
654 0,
655 NULL,
656 0,
657 NULL)) == -1) {
658 DEBUG(0, ("Error opening stream %s:%s. "
659 "errno=%d (%s)\n", fname, dp->d_name, errno,
660 strerror(errno)));
661 continue;
662 }
663
664 /* Figure out the stat info. */
665 fake_fh.fd = stream_fd;
666 ret = SMB_VFS_FSTAT(&fake_fs, &stream_sbuf);
667 close(stream_fd);
668
669 if (ret) {
670 DEBUG(0, ("Error fstating stream %s:%s. "
671 "errno=%d (%s)\n", fname, dp->d_name, errno,
672 strerror(errno)));
673 continue;
674 }
675
676 merge_stat(&stream_sbuf, base_sbuf);
677
678 if (!add_one_stream(state->mem_ctx,
679 &state->num_streams, &state->streams,
680 dp->d_name, stream_sbuf.st_ex_size,
681 SMB_VFS_GET_ALLOC_SIZE(conn, NULL,
682 &stream_sbuf))) {
683 state->status = NT_STATUS_NO_MEMORY;
684 break;
685 }
686 }
687
688out:
689 /* Cleanup everything that was opened. */
690 if (dirp != NULL) {
691 SMB_VFS_CLOSEDIR(conn, dirp);
692 }
693 if (dir_fd >= 0) {
694 close(dir_fd);
695 }
696 if (opened_base_fd) {
697 SMB_ASSERT(base_fd >= 0);
698 close(base_fd);
699 }
700
701 TALLOC_FREE(fake_fs.fsp_name);
702 return status;
703}
704
705NTSTATUS onefs_streaminfo(vfs_handle_struct *handle,
706 struct files_struct *fsp,
707 const char *fname,
708 TALLOC_CTX *mem_ctx,
709 unsigned int *num_streams,
710 struct stream_struct **streams)
711{
712 SMB_STRUCT_STAT sbuf;
713 int ret;
714 NTSTATUS status;
715 struct streaminfo_state state;
716
717 /* Get a valid stat. */
718 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
719 ret = SMB_VFS_FSTAT(fsp, &sbuf);
720 } else {
721 struct smb_filename *smb_fname = NULL;
722
723 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
724 NULL, &smb_fname);
725 if (!NT_STATUS_IS_OK(status)) {
726 return status;
727 }
728 ret = SMB_VFS_STAT(handle->conn, smb_fname);
729
730 sbuf = smb_fname->st;
731
732 TALLOC_FREE(smb_fname);
733 }
734
735 if (ret == -1) {
736 return map_nt_error_from_unix(errno);
737 }
738
739 state.streams = *pstreams;
740 state.num_streams = *pnum_streams;
741
742 if (lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
743 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
744 goto out;
745 }
746
747 state.mem_ctx = mem_ctx;
748 state.handle = handle;
749 state.status = NT_STATUS_OK;
750
751 /* If there are more streams, add them too. */
752 if (sbuf.st_ex_flags & UF_HASADS) {
753
754 status = walk_onefs_streams(handle->conn, fsp, fname,
755 &state, &sbuf);
756
757 if (!NT_STATUS_IS_OK(status)) {
758 TALLOC_FREE(state.streams);
759 return status;
760 }
761
762 if (!NT_STATUS_IS_OK(state.status)) {
763 TALLOC_FREE(state.streams);
764 return state.status;
765 }
766 }
767 out:
768 *num_streams = state.num_streams;
769 *streams = state.streams;
770 return SMB_VFS_NEXT_STREAMINFO(handle, fsp, fname, mem_ctx, pnum_streams, pstreams);
771}
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