source: branches/samba-3.5.x/source3/modules/onefs_streams.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 18.6 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 "onefs.h"
24#include "onefs_config.h"
25
26#include <sys/isi_enc.h>
27
28NTSTATUS onefs_stream_prep_smb_fname(TALLOC_CTX *ctx,
29 const struct smb_filename *smb_fname_in,
30 struct smb_filename **smb_fname_out)
31{
32 char *stream_name = NULL;
33 NTSTATUS status;
34
35 /*
36 * Only attempt to strip off the trailing :$DATA if there is an actual
37 * stream there. If it is the default stream, the smb_fname_out will
38 * just have a NULL stream so the base file is opened.
39 */
40 if (smb_fname_in->stream_name &&
41 !is_ntfs_default_stream_smb_fname(smb_fname_in)) {
42 char *str_tmp = smb_fname_in->stream_name;
43
44 /* First strip off the leading ':' */
45 if (str_tmp[0] == ':') {
46 str_tmp++;
47 }
48
49 /* Create a new copy of the stream_name. */
50 stream_name = talloc_strdup(ctx, str_tmp);
51 if (stream_name == NULL) {
52 return NT_STATUS_NO_MEMORY;
53 }
54
55 /* Strip off the :$DATA if one exists. */
56 str_tmp = strrchr_m(stream_name, ':');
57 if (str_tmp) {
58 if (StrCaseCmp(str_tmp, ":$DATA") != 0) {
59 return NT_STATUS_INVALID_PARAMETER;
60 }
61 str_tmp[0] = '\0';
62 }
63 }
64
65 /*
66 * If there was a stream that wasn't the default stream the leading
67 * colon and trailing :$DATA has now been stripped off. Create a new
68 * smb_filename to pass back.
69 */
70 status = create_synthetic_smb_fname(ctx, smb_fname_in->base_name,
71 stream_name, &smb_fname_in->st,
72 smb_fname_out);
73 TALLOC_FREE(stream_name);
74
75 if (!NT_STATUS_IS_OK(status)) {
76 DEBUG(5, ("Failed to prep stream name for %s: %s\n",
77 *smb_fname_out ?
78 smb_fname_str_dbg(*smb_fname_out) : "NULL",
79 nt_errstr(status)));
80 }
81 return status;
82}
83
84int onefs_close(vfs_handle_struct *handle, struct files_struct *fsp)
85{
86 int ret2, ret = 0;
87
88 if (fsp->base_fsp) {
89 ret = SMB_VFS_NEXT_CLOSE(handle, fsp->base_fsp);
90 }
91 ret2 = SMB_VFS_NEXT_CLOSE(handle, fsp);
92
93 return ret ? ret : ret2;
94}
95
96/*
97 * Get the ADS directory fd for a file.
98 */
99static int get_stream_dir_fd(connection_struct *conn, const char *base,
100 int *base_fdp)
101{
102 int base_fd;
103 int dir_fd;
104 int saved_errno;
105
106 DEBUG(10, ("Getting stream directory fd: %s (%d)\n", base,
107 base_fdp ? *base_fdp : -1));
108
109 /* If a valid base_fdp was given, use it. */
110 if (base_fdp && *base_fdp >= 0) {
111 base_fd = *base_fdp;
112 } else {
113 base_fd = onefs_sys_create_file(conn,
114 -1,
115 base,
116 0,
117 0,
118 0,
119 0,
120 0,
121 0,
122 INTERNAL_OPEN_ONLY,
123 0,
124 NULL,
125 0,
126 NULL);
127 if (base_fd < 0) {
128 DEBUG(5, ("Failed getting base fd: %s\n",
129 strerror(errno)));
130 return -1;
131 }
132 }
133
134 /* Open the ADS directory. */
135 dir_fd = onefs_sys_create_file(conn,
136 base_fd,
137 ".",
138 0,
139 FILE_READ_DATA,
140 0,
141 0,
142 0,
143 0,
144 INTERNAL_OPEN_ONLY,
145 0,
146 NULL,
147 0,
148 NULL);
149
150 /* Close base_fd if it's not need or on error. */
151 if (!base_fdp || dir_fd < 0) {
152 saved_errno = errno;
153 close(base_fd);
154 errno = saved_errno;
155 }
156
157 /* Set the out base_fdp if successful and it was requested. */
158 if (base_fdp && dir_fd >= 0) {
159 *base_fdp = base_fd;
160 }
161
162 if (dir_fd < 0) {
163 DEBUG(5, ("Failed getting stream directory fd: %s\n",
164 strerror(errno)));
165 }
166
167 return dir_fd;
168}
169
170int onefs_rename(vfs_handle_struct *handle,
171 const struct smb_filename *smb_fname_src,
172 const struct smb_filename *smb_fname_dst)
173{
174 struct smb_filename *smb_fname_src_onefs = NULL;
175 struct smb_filename *smb_fname_dst_onefs = NULL;
176 NTSTATUS status;
177 int saved_errno;
178 int dir_fd = -1;
179 int ret = -1;
180
181 START_PROFILE(syscall_rename_at);
182
183 if (!is_ntfs_stream_smb_fname(smb_fname_src) &&
184 !is_ntfs_stream_smb_fname(smb_fname_dst)) {
185 ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src,
186 smb_fname_dst);
187 goto done;
188 }
189
190 /* For now don't allow renames from or to the default stream. */
191 if (is_ntfs_default_stream_smb_fname(smb_fname_src) ||
192 is_ntfs_default_stream_smb_fname(smb_fname_dst)) {
193 DEBUG(3, ("Unable to rename to/from a default stream: %s -> "
194 "%s\n", smb_fname_str_dbg(smb_fname_src),
195 smb_fname_str_dbg(smb_fname_dst)));
196 errno = ENOSYS;
197 goto done;
198 }
199
200 /* prep stream smb_filename structs. */
201 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname_src,
202 &smb_fname_src_onefs);
203 if (!NT_STATUS_IS_OK(status)) {
204 errno = map_errno_from_nt_status(status);
205 goto done;
206 }
207 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname_dst,
208 &smb_fname_dst_onefs);
209 if (!NT_STATUS_IS_OK(status)) {
210 errno = map_errno_from_nt_status(status);
211 goto done;
212 }
213
214 dir_fd = get_stream_dir_fd(handle->conn, smb_fname_src->base_name,
215 NULL);
216 if (dir_fd < -1) {
217 goto done;
218 }
219
220 DEBUG(8, ("onefs_rename called for %s => %s\n",
221 smb_fname_str_dbg(smb_fname_src_onefs),
222 smb_fname_str_dbg(smb_fname_dst_onefs)));
223
224 /* Handle rename of stream to default stream specially. */
225 if (smb_fname_dst_onefs->stream_name == NULL) {
226 ret = enc_renameat(dir_fd, smb_fname_src_onefs->stream_name,
227 ENC_DEFAULT, AT_FDCWD,
228 smb_fname_dst_onefs->base_name,
229 ENC_DEFAULT);
230 } else {
231 ret = enc_renameat(dir_fd, smb_fname_src_onefs->stream_name,
232 ENC_DEFAULT, dir_fd,
233 smb_fname_dst_onefs->stream_name,
234 ENC_DEFAULT);
235 }
236
237 done:
238 END_PROFILE(syscall_rename_at);
239 TALLOC_FREE(smb_fname_src_onefs);
240 TALLOC_FREE(smb_fname_dst_onefs);
241
242 saved_errno = errno;
243 if (dir_fd >= 0) {
244 close(dir_fd);
245 }
246 errno = saved_errno;
247 return ret;
248}
249
250/*
251 * Merge a base file's sbuf into the a streams's sbuf.
252 */
253static void merge_stat(SMB_STRUCT_STAT *stream_sbuf,
254 const SMB_STRUCT_STAT *base_sbuf)
255{
256 int dos_flags = (UF_DOS_NOINDEX | UF_DOS_ARCHIVE |
257 UF_DOS_HIDDEN | UF_DOS_RO | UF_DOS_SYSTEM);
258 stream_sbuf->st_ex_mtime = base_sbuf->st_ex_mtime;
259 stream_sbuf->st_ex_ctime = base_sbuf->st_ex_ctime;
260 stream_sbuf->st_ex_atime = base_sbuf->st_ex_atime;
261 stream_sbuf->st_ex_flags &= ~dos_flags;
262 stream_sbuf->st_ex_flags |= base_sbuf->st_ex_flags & dos_flags;
263}
264
265/* fake timestamps */
266static void onefs_adjust_stat_time(struct connection_struct *conn,
267 const char *fname, SMB_STRUCT_STAT *sbuf)
268{
269 struct onefs_vfs_share_config cfg;
270 struct timeval tv_now = {0, 0};
271 bool static_mtime = False;
272 bool static_atime = False;
273
274 if (!onefs_get_config(SNUM(conn),
275 ONEFS_VFS_CONFIG_FAKETIMESTAMPS, &cfg)) {
276 return;
277 }
278
279 if (IS_MTIME_STATIC_PATH(conn, &cfg, fname)) {
280 sbuf->st_ex_mtime = sbuf->st_ex_btime;
281 static_mtime = True;
282 }
283 if (IS_ATIME_STATIC_PATH(conn, &cfg, fname)) {
284 sbuf->st_ex_atime = sbuf->st_ex_btime;
285 static_atime = True;
286 }
287
288 if (IS_CTIME_NOW_PATH(conn, &cfg, fname)) {
289 if (cfg.ctime_slop < 0) {
290 sbuf->st_ex_btime.tv_sec = INT_MAX - 1;
291 } else {
292 GetTimeOfDay(&tv_now);
293 sbuf->st_ex_btime.tv_sec = tv_now.tv_sec +
294 cfg.ctime_slop;
295 }
296 }
297
298 if (!static_mtime && IS_MTIME_NOW_PATH(conn,&cfg,fname)) {
299 if (cfg.mtime_slop < 0) {
300 sbuf->st_ex_mtime.tv_sec = INT_MAX - 1;
301 } else {
302 if (tv_now.tv_sec == 0)
303 GetTimeOfDay(&tv_now);
304 sbuf->st_ex_mtime.tv_sec = tv_now.tv_sec +
305 cfg.mtime_slop;
306 }
307 }
308 if (!static_atime && IS_ATIME_NOW_PATH(conn,&cfg,fname)) {
309 if (cfg.atime_slop < 0) {
310 sbuf->st_ex_atime.tv_sec = INT_MAX - 1;
311 } else {
312 if (tv_now.tv_sec == 0)
313 GetTimeOfDay(&tv_now);
314 sbuf->st_ex_atime.tv_sec = tv_now.tv_sec +
315 cfg.atime_slop;
316 }
317 }
318}
319
320static int stat_stream(struct connection_struct *conn, const char *base,
321 const char *stream, SMB_STRUCT_STAT *sbuf, int flags)
322{
323 SMB_STRUCT_STAT base_sbuf;
324 int base_fd = -1, dir_fd, ret, saved_errno;
325
326 dir_fd = get_stream_dir_fd(conn, base, &base_fd);
327 if (dir_fd < 0) {
328 return -1;
329 }
330
331 /* Stat the stream. */
332 ret = onefs_sys_fstat_at(dir_fd, stream, sbuf, flags);
333 if (ret != -1) {
334 DEBUG(10, ("stat of stream '%s' failed: %s\n", stream,
335 strerror(errno)));
336 } else {
337 /* Now stat the base file and merge the results. */
338 ret = onefs_sys_fstat(base_fd, &base_sbuf);
339 if (ret != -1) {
340 merge_stat(sbuf, &base_sbuf);
341 }
342 }
343
344 saved_errno = errno;
345 close(dir_fd);
346 close(base_fd);
347 errno = saved_errno;
348 return ret;
349}
350
351int onefs_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
352{
353 struct smb_filename *smb_fname_onefs = NULL;
354 NTSTATUS status;
355 int ret;
356
357 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
358 &smb_fname_onefs);
359 if (!NT_STATUS_IS_OK(status)) {
360 errno = map_errno_from_nt_status(status);
361 return -1;
362 }
363
364 /*
365 * If the smb_fname has no stream or is :$DATA, then just stat the
366 * base stream. Otherwise stat the stream.
367 */
368 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
369 ret = onefs_sys_stat(smb_fname_onefs->base_name,
370 &smb_fname->st);
371 } else {
372 ret = stat_stream(handle->conn, smb_fname_onefs->base_name,
373 smb_fname_onefs->stream_name, &smb_fname->st,
374 0);
375 }
376
377 onefs_adjust_stat_time(handle->conn, smb_fname->base_name,
378 &smb_fname->st);
379
380 TALLOC_FREE(smb_fname_onefs);
381
382 return ret;
383}
384
385int onefs_fstat(vfs_handle_struct *handle, struct files_struct *fsp,
386 SMB_STRUCT_STAT *sbuf)
387{
388 SMB_STRUCT_STAT base_sbuf;
389 int ret;
390
391 /* Stat the stream, by calling next_fstat on the stream's fd. */
392 ret = onefs_sys_fstat(fsp->fh->fd, sbuf);
393 if (ret == -1) {
394 return ret;
395 }
396
397 /* Stat the base file and merge the results. */
398 if (fsp != NULL && fsp->base_fsp != NULL) {
399 ret = onefs_sys_fstat(fsp->base_fsp->fh->fd, &base_sbuf);
400 if (ret != -1) {
401 merge_stat(sbuf, &base_sbuf);
402 }
403 }
404
405 onefs_adjust_stat_time(handle->conn, fsp->fsp_name->base_name, sbuf);
406 return ret;
407}
408
409int onefs_lstat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
410{
411 struct smb_filename *smb_fname_onefs = NULL;
412 NTSTATUS status;
413 int ret;
414
415 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
416 &smb_fname_onefs);
417 if (!NT_STATUS_IS_OK(status)) {
418 errno = map_errno_from_nt_status(status);
419 return -1;
420 }
421
422 /*
423 * If the smb_fname has no stream or is :$DATA, then just stat the
424 * base stream. Otherwise stat the stream.
425 */
426 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
427 ret = onefs_sys_lstat(smb_fname_onefs->base_name,
428 &smb_fname->st);
429 } else {
430 ret = stat_stream(handle->conn, smb_fname_onefs->base_name,
431 smb_fname_onefs->stream_name, &smb_fname->st,
432 AT_SYMLINK_NOFOLLOW);
433 }
434
435 onefs_adjust_stat_time(handle->conn, smb_fname->base_name,
436 &smb_fname->st);
437
438 TALLOC_FREE(smb_fname_onefs);
439
440 return ret;
441}
442
443int onefs_unlink(vfs_handle_struct *handle,
444 const struct smb_filename *smb_fname)
445{
446 struct smb_filename *smb_fname_onefs = NULL;
447 int ret;
448 int dir_fd, saved_errno;
449 NTSTATUS status;
450
451 /* Not a stream. */
452 if (!is_ntfs_stream_smb_fname(smb_fname)) {
453 return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
454 }
455
456 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
457 &smb_fname_onefs);
458 if (!NT_STATUS_IS_OK(status)) {
459 errno = map_errno_from_nt_status(status);
460 return -1;
461 }
462
463 /* Default stream (the ::$DATA was just stripped off). */
464 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
465 ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_onefs);
466 goto out;
467 }
468
469 dir_fd = get_stream_dir_fd(handle->conn, smb_fname_onefs->base_name,
470 NULL);
471 if (dir_fd < 0) {
472 ret = -1;
473 goto out;
474 }
475
476 ret = enc_unlinkat(dir_fd, smb_fname_onefs->stream_name, ENC_DEFAULT,
477 0);
478
479 saved_errno = errno;
480 close(dir_fd);
481 errno = saved_errno;
482 out:
483 TALLOC_FREE(smb_fname_onefs);
484 return ret;
485}
486
487int onefs_vtimes_streams(vfs_handle_struct *handle,
488 const struct smb_filename *smb_fname,
489 int flags, struct timespec times[3])
490{
491 struct smb_filename *smb_fname_onefs = NULL;
492 int ret;
493 int dirfd;
494 int saved_errno;
495 NTSTATUS status;
496
497 START_PROFILE(syscall_ntimes);
498
499 if (!is_ntfs_stream_smb_fname(smb_fname)) {
500 ret = vtimes(smb_fname->base_name, times, flags);
501 return ret;
502 }
503
504 status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
505 &smb_fname_onefs);
506 if (!NT_STATUS_IS_OK(status)) {
507 errno = map_errno_from_nt_status(status);
508 return -1;
509 }
510
511 /* Default stream (the ::$DATA was just stripped off). */
512 if (!is_ntfs_stream_smb_fname(smb_fname_onefs)) {
513 ret = vtimes(smb_fname_onefs->base_name, times, flags);
514 goto out;
515 }
516
517 dirfd = get_stream_dir_fd(handle->conn, smb_fname->base_name, NULL);
518 if (dirfd < -1) {
519 ret = -1;
520 goto out;
521 }
522
523 ret = enc_vtimesat(dirfd, smb_fname_onefs->stream_name, ENC_DEFAULT,
524 times, flags);
525
526 saved_errno = errno;
527 close(dirfd);
528 errno = saved_errno;
529
530 out:
531 END_PROFILE(syscall_ntimes);
532 TALLOC_FREE(smb_fname_onefs);
533 return ret;
534}
535
536/*
537 * Streaminfo enumeration functionality
538 */
539struct streaminfo_state {
540 TALLOC_CTX *mem_ctx;
541 vfs_handle_struct *handle;
542 unsigned int num_streams;
543 struct stream_struct *streams;
544 NTSTATUS status;
545};
546
547static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,
548 struct stream_struct **streams,
549 const char *name, SMB_OFF_T size,
550 SMB_OFF_T alloc_size)
551{
552 struct stream_struct *tmp;
553
554 tmp = TALLOC_REALLOC_ARRAY(mem_ctx, *streams, struct stream_struct,
555 (*num_streams)+1);
556 if (tmp == NULL) {
557 return false;
558 }
559
560 tmp[*num_streams].name = talloc_asprintf(mem_ctx, ":%s:%s", name,
561 "$DATA");
562 if (tmp[*num_streams].name == NULL) {
563 return false;
564 }
565
566 tmp[*num_streams].size = size;
567 tmp[*num_streams].alloc_size = alloc_size;
568
569 *streams = tmp;
570 *num_streams += 1;
571 return true;
572}
573
574static NTSTATUS walk_onefs_streams(connection_struct *conn, files_struct *fsp,
575 const char *fname,
576 struct streaminfo_state *state,
577 SMB_STRUCT_STAT *base_sbuf)
578{
579 NTSTATUS status = NT_STATUS_OK;
580 bool opened_base_fd = false;
581 int base_fd = -1;
582 int dir_fd = -1;
583 int stream_fd = -1;
584 int ret;
585 SMB_STRUCT_DIR *dirp = NULL;
586 SMB_STRUCT_DIRENT *dp = NULL;
587 files_struct fake_fs;
588 struct fd_handle fake_fh;
589 SMB_STRUCT_STAT stream_sbuf;
590
591 ZERO_STRUCT(fake_fh);
592 ZERO_STRUCT(fake_fs);
593
594 /* If the base file is already open, use its fd. */
595 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
596 base_fd = fsp->fh->fd;
597 } else {
598 opened_base_fd = true;
599 }
600
601 dir_fd = get_stream_dir_fd(conn, fname, &base_fd);
602 if (dir_fd < 0) {
603 return map_nt_error_from_unix(errno);
604 }
605
606 /* Open the ADS directory. */
607 if ((dirp = fdopendir(dir_fd)) == NULL) {
608 DEBUG(0, ("Error on opendir %s. errno=%d (%s)\n",
609 fname, errno, strerror(errno)));
610 status = map_nt_error_from_unix(errno);
611 goto out;
612 }
613
614 /* Initialize the dir state struct and add it to the list.
615 * This is a layer violation, and really should be handled by a
616 * VFS_FDOPENDIR() call which would properly setup the dir state.
617 * But since this is all within the onefs.so module, we cheat for
618 * now and call directly into the readdirplus code.
619 * NOTE: This state MUST be freed by a proper VFS_CLOSEDIR() call. */
620 ret = onefs_rdp_add_dir_state(conn, dirp);
621 if (ret) {
622 DEBUG(0, ("Error adding dir_state to the list\n"));
623 status = map_nt_error_from_unix(errno);
624 goto out;
625 }
626
627 fake_fs.conn = conn;
628 fake_fs.fh = &fake_fh;
629 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL, NULL,
630 &fake_fs.fsp_name);
631 if (!NT_STATUS_IS_OK(status)) {
632 goto out;
633 }
634
635 /* Iterate over the streams in the ADS directory. */
636 while ((dp = SMB_VFS_READDIR(conn, dirp, NULL)) != NULL) {
637 /* Skip the "." and ".." entries */
638 if ((strcmp(dp->d_name, ".") == 0) ||
639 (strcmp(dp->d_name, "..") == 0))
640 continue;
641
642 /* Open actual stream */
643 if ((stream_fd = onefs_sys_create_file(conn,
644 base_fd,
645 dp->d_name,
646 0,
647 0,
648 0,
649 0,
650 0,
651 0,
652 INTERNAL_OPEN_ONLY,
653 0,
654 NULL,
655 0,
656 NULL)) == -1) {
657 DEBUG(0, ("Error opening stream %s:%s. "
658 "errno=%d (%s)\n", fname, dp->d_name, errno,
659 strerror(errno)));
660 continue;
661 }
662
663 /* Figure out the stat info. */
664 fake_fh.fd = stream_fd;
665 ret = SMB_VFS_FSTAT(&fake_fs, &stream_sbuf);
666 close(stream_fd);
667
668 if (ret) {
669 DEBUG(0, ("Error fstating stream %s:%s. "
670 "errno=%d (%s)\n", fname, dp->d_name, errno,
671 strerror(errno)));
672 continue;
673 }
674
675 merge_stat(&stream_sbuf, base_sbuf);
676
677 if (!add_one_stream(state->mem_ctx,
678 &state->num_streams, &state->streams,
679 dp->d_name, stream_sbuf.st_ex_size,
680 SMB_VFS_GET_ALLOC_SIZE(conn, NULL,
681 &stream_sbuf))) {
682 state->status = NT_STATUS_NO_MEMORY;
683 break;
684 }
685 }
686
687out:
688 /* Cleanup everything that was opened. */
689 if (dirp != NULL) {
690 SMB_VFS_CLOSEDIR(conn, dirp);
691 }
692 if (dir_fd >= 0) {
693 close(dir_fd);
694 }
695 if (opened_base_fd) {
696 SMB_ASSERT(base_fd >= 0);
697 close(base_fd);
698 }
699
700 TALLOC_FREE(fake_fs.fsp_name);
701 return status;
702}
703
704NTSTATUS onefs_streaminfo(vfs_handle_struct *handle,
705 struct files_struct *fsp,
706 const char *fname,
707 TALLOC_CTX *mem_ctx,
708 unsigned int *num_streams,
709 struct stream_struct **streams)
710{
711 SMB_STRUCT_STAT sbuf;
712 int ret;
713 NTSTATUS status;
714 struct streaminfo_state state;
715
716 /* Get a valid stat. */
717 if ((fsp != NULL) && (fsp->fh->fd != -1)) {
718 ret = SMB_VFS_FSTAT(fsp, &sbuf);
719 } else {
720 struct smb_filename *smb_fname = NULL;
721
722 status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
723 NULL, &smb_fname);
724 if (!NT_STATUS_IS_OK(status)) {
725 return status;
726 }
727 ret = SMB_VFS_STAT(handle->conn, smb_fname);
728
729 sbuf = smb_fname->st;
730
731 TALLOC_FREE(smb_fname);
732 }
733
734 if (ret == -1) {
735 return map_nt_error_from_unix(errno);
736 }
737
738 state.streams = NULL;
739 state.num_streams = 0;
740
741 if (lp_parm_bool(SNUM(handle->conn), PARM_ONEFS_TYPE,
742 PARM_IGNORE_STREAMS, PARM_IGNORE_STREAMS_DEFAULT)) {
743 goto out;
744 }
745
746 /* Add the default stream. */
747 if (S_ISREG(sbuf.st_ex_mode)) {
748 if (!add_one_stream(mem_ctx,
749 &state.num_streams, &state.streams,
750 "", sbuf.st_ex_size,
751 SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp,
752 &sbuf))) {
753 return NT_STATUS_NO_MEMORY;
754 }
755 }
756
757 state.mem_ctx = mem_ctx;
758 state.handle = handle;
759 state.status = NT_STATUS_OK;
760
761 /* If there are more streams, add them too. */
762 if (sbuf.st_ex_flags & UF_HASADS) {
763
764 status = walk_onefs_streams(handle->conn, fsp, fname,
765 &state, &sbuf);
766
767 if (!NT_STATUS_IS_OK(status)) {
768 TALLOC_FREE(state.streams);
769 return status;
770 }
771
772 if (!NT_STATUS_IS_OK(state.status)) {
773 TALLOC_FREE(state.streams);
774 return state.status;
775 }
776 }
777 out:
778 *num_streams = state.num_streams;
779 *streams = state.streams;
780 return NT_STATUS_OK;
781}
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