summaryrefslogtreecommitdiffstats
path: root/fs/cifs/smb2inode.c
blob: 1f900b81c34ae62516c26fd48e6e2d17629f3be3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
/*
 *   fs/cifs/smb2inode.c
 *
 *   Copyright (C) International Business Machines  Corp., 2002, 2011
 *                 Etersoft, 2012
 *   Author(s): Pavel Shilovsky (pshilovsky@samba.org),
 *              Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/fs.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include "cifs_unicode.h"
#include "fscache.h"
#include "smb2glob.h"
#include "smb2pdu.h"
#include "smb2proto.h"

static void
free_set_inf_compound(struct smb_rqst *rqst)
{
	if (rqst[1].rq_iov)
		SMB2_set_info_free(&rqst[1]);
	if (rqst[2].rq_iov)
		SMB2_close_free(&rqst[2]);
}


struct cop_vars {
	struct cifs_open_parms oparms;
	struct kvec rsp_iov[3];
	struct smb_rqst rqst[3];
	struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
	struct kvec qi_iov[1];
	struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
	struct kvec close_iov[1];
	struct smb2_file_rename_info rename_info;
	struct smb2_file_link_info link_info;
};

static int
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
		 struct cifs_sb_info *cifs_sb, const char *full_path,
		 __u32 desired_access, __u32 create_disposition,
		 __u32 create_options, umode_t mode, void *ptr, int command,
		 struct cifsFileInfo *cfile)
{
	struct cop_vars *vars = NULL;
	struct kvec *rsp_iov;
	struct smb_rqst *rqst;
	int rc;
	__le16 *utf16_path = NULL;
	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	struct cifs_fid fid;
	struct cifs_ses *ses = tcon->ses;
	struct TCP_Server_Info *server;
	int num_rqst = 0;
	int resp_buftype[3];
	struct smb2_query_info_rsp *qi_rsp = NULL;
	int flags = 0;
	__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
	unsigned int size[2];
	void *data[2];
	int len;

	vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
	if (vars == NULL)
		return -ENOMEM;
	rqst = &vars->rqst[0];
	rsp_iov = &vars->rsp_iov[0];

	server = cifs_pick_channel(ses);

	if (smb3_encryption_required(tcon))
		flags |= CIFS_TRANSFORM_REQ;

	resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;

	/* We already have a handle so we can skip the open */
	if (cfile)
		goto after_open;

	/* Open */
	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	if (!utf16_path) {
		rc = -ENOMEM;
		goto finished;
	}

	vars->oparms.tcon = tcon;
	vars->oparms.desired_access = desired_access;
	vars->oparms.disposition = create_disposition;
	vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
	vars->oparms.fid = &fid;
	vars->oparms.reconnect = false;
	vars->oparms.mode = mode;
	vars->oparms.cifs_sb = cifs_sb;

	rqst[num_rqst].rq_iov = &vars->open_iov[0];
	rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
	rc = SMB2_open_init(tcon, server,
			    &rqst[num_rqst], &oplock, &vars->oparms,
			    utf16_path);
	kfree(utf16_path);
	if (rc)
		goto finished;

	smb2_set_next_command(tcon, &rqst[num_rqst]);
 after_open:
	num_rqst++;
	rc = 0;

	/* Operation */
	switch (command) {
	case SMB2_OP_QUERY_INFO:
		rqst[num_rqst].rq_iov = &vars->qi_iov[0];
		rqst[num_rqst].rq_nvec = 1;

		if (cfile)
			rc = SMB2_query_info_init(tcon, server,
				&rqst[num_rqst],
				cfile->fid.persistent_fid,
				cfile->fid.volatile_fid,
				FILE_ALL_INFORMATION,
				SMB2_O_INFO_FILE, 0,
				sizeof(struct smb2_file_all_info) +
					  PATH_MAX * 2, 0, NULL);
		else {
			rc = SMB2_query_info_init(tcon, server,
				&rqst[num_rqst],
				COMPOUND_FID,
				COMPOUND_FID,
				FILE_ALL_INFORMATION,
				SMB2_O_INFO_FILE, 0,
				sizeof(struct smb2_file_all_info) +
					  PATH_MAX * 2, 0, NULL);
			if (!rc) {
				smb2_set_next_command(tcon, &rqst[num_rqst]);
				smb2_set_related(&rqst[num_rqst]);
			}
		}

		if (rc)
			goto finished;
		num_rqst++;
		trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
						     full_path);
		break;
	case SMB2_OP_POSIX_QUERY_INFO:
		rqst[num_rqst].rq_iov = &vars->qi_iov[0];
		rqst[num_rqst].rq_nvec = 1;

		if (cfile)
			rc = SMB2_query_info_init(tcon, server,
				&rqst[num_rqst],
				cfile->fid.persistent_fid,
				cfile->fid.volatile_fid,
				SMB_FIND_FILE_POSIX_INFO,
				SMB2_O_INFO_FILE, 0,
				/* TBD: fix following to allow for longer SIDs */
				sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
				(sizeof(struct cifs_sid) * 2), 0, NULL);
		else {
			rc = SMB2_query_info_init(tcon, server,
				&rqst[num_rqst],
				COMPOUND_FID,
				COMPOUND_FID,
				SMB_FIND_FILE_POSIX_INFO,
				SMB2_O_INFO_FILE, 0,
				sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
				(sizeof(struct cifs_sid) * 2), 0, NULL);
			if (!rc) {
				smb2_set_next_command(tcon, &rqst[num_rqst]);
				smb2_set_related(&rqst[num_rqst]);
			}
		}

		if (rc)
			goto finished;
		num_rqst++;
		trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_DELETE:
		trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_MKDIR:
		/*
		 * Directories are created through parameters in the
		 * SMB2_open() call.
		 */
		trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_RMDIR:
		rqst[num_rqst].rq_iov = &vars->si_iov[0];
		rqst[num_rqst].rq_nvec = 1;

		size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
		data[0] = &delete_pending[0];

		rc = SMB2_set_info_init(tcon, server,
					&rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_DISPOSITION_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		if (rc)
			goto finished;
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_SET_EOF:
		rqst[num_rqst].rq_iov = &vars->si_iov[0];
		rqst[num_rqst].rq_nvec = 1;

		size[0] = 8; /* sizeof __le64 */
		data[0] = ptr;

		rc = SMB2_set_info_init(tcon, server,
					&rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_END_OF_FILE_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		if (rc)
			goto finished;
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_SET_INFO:
		rqst[num_rqst].rq_iov = &vars->si_iov[0];
		rqst[num_rqst].rq_nvec = 1;


		size[0] = sizeof(FILE_BASIC_INFO);
		data[0] = ptr;

		if (cfile)
			rc = SMB2_set_info_init(tcon, server,
				&rqst[num_rqst],
				cfile->fid.persistent_fid,
				cfile->fid.volatile_fid, current->tgid,
				FILE_BASIC_INFORMATION,
				SMB2_O_INFO_FILE, 0, data, size);
		else {
			rc = SMB2_set_info_init(tcon, server,
				&rqst[num_rqst],
				COMPOUND_FID,
				COMPOUND_FID, current->tgid,
				FILE_BASIC_INFORMATION,
				SMB2_O_INFO_FILE, 0, data, size);
			if (!rc) {
				smb2_set_next_command(tcon, &rqst[num_rqst]);
				smb2_set_related(&rqst[num_rqst]);
			}
		}

		if (rc)
			goto finished;
		num_rqst++;
		trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
						   full_path);
		break;
	case SMB2_OP_RENAME:
		rqst[num_rqst].rq_iov = &vars->si_iov[0];
		rqst[num_rqst].rq_nvec = 2;

		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));

		vars->rename_info.ReplaceIfExists = 1;
		vars->rename_info.RootDirectory = 0;
		vars->rename_info.FileNameLength = cpu_to_le32(len);

		size[0] = sizeof(struct smb2_file_rename_info);
		data[0] = &vars->rename_info;

		size[1] = len + 2 /* null */;
		data[1] = (__le16 *)ptr;

		if (cfile)
			rc = SMB2_set_info_init(tcon, server,
						&rqst[num_rqst],
						cfile->fid.persistent_fid,
						cfile->fid.volatile_fid,
					current->tgid, FILE_RENAME_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		else {
			rc = SMB2_set_info_init(tcon, server,
					&rqst[num_rqst],
					COMPOUND_FID, COMPOUND_FID,
					current->tgid, FILE_RENAME_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
			if (!rc) {
				smb2_set_next_command(tcon, &rqst[num_rqst]);
				smb2_set_related(&rqst[num_rqst]);
			}
		}
		if (rc)
			goto finished;
		num_rqst++;
		trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	case SMB2_OP_HARDLINK:
		rqst[num_rqst].rq_iov = &vars->si_iov[0];
		rqst[num_rqst].rq_nvec = 2;

		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));

		vars->link_info.ReplaceIfExists = 0;
		vars->link_info.RootDirectory = 0;
		vars->link_info.FileNameLength = cpu_to_le32(len);

		size[0] = sizeof(struct smb2_file_link_info);
		data[0] = &vars->link_info;

		size[1] = len + 2 /* null */;
		data[1] = (__le16 *)ptr;

		rc = SMB2_set_info_init(tcon, server,
					&rqst[num_rqst], COMPOUND_FID,
					COMPOUND_FID, current->tgid,
					FILE_LINK_INFORMATION,
					SMB2_O_INFO_FILE, 0, data, size);
		if (rc)
			goto finished;
		smb2_set_next_command(tcon, &rqst[num_rqst]);
		smb2_set_related(&rqst[num_rqst++]);
		trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
		break;
	default:
		cifs_dbg(VFS, "Invalid command\n");
		rc = -EINVAL;
	}
	if (rc)
		goto finished;

	/* We already have a handle so we can skip the close */
	if (cfile)
		goto after_close;
	/* Close */
	rqst[num_rqst].rq_iov = &vars->close_iov[0];
	rqst[num_rqst].rq_nvec = 1;
	rc = SMB2_close_init(tcon, server,
			     &rqst[num_rqst], COMPOUND_FID,
			     COMPOUND_FID, false);
	smb2_set_related(&rqst[num_rqst]);
	if (rc)
		goto finished;
 after_close:
	num_rqst++;

	if (cfile) {
		cifsFileInfo_put(cfile);
		cfile = NULL;
		rc = compound_send_recv(xid, ses, server,
					flags, num_rqst - 2,
					&rqst[1], &resp_buftype[1],
					&rsp_iov[1]);
	} else
		rc = compound_send_recv(xid, ses, server,
					flags, num_rqst,
					rqst, resp_buftype,
					rsp_iov);

 finished:
	if (cfile)
		cifsFileInfo_put(cfile);

	SMB2_open_free(&rqst[0]);
	if (rc == -EREMCHG) {
		pr_warn_once("server share %s deleted\n", tcon->treeName);
		tcon->need_reconnect = true;
	}

	switch (command) {
	case SMB2_OP_QUERY_INFO:
		if (rc == 0) {
			qi_rsp = (struct smb2_query_info_rsp *)
				rsp_iov[1].iov_base;
			rc = smb2_validate_and_copy_iov(
				le16_to_cpu(qi_rsp->OutputBufferOffset),
				le32_to_cpu(qi_rsp->OutputBufferLength),
				&rsp_iov[1], sizeof(struct smb2_file_all_info),
				ptr);
		}
		if (rqst[1].rq_iov)
			SMB2_query_info_free(&rqst[1]);
		if (rqst[2].rq_iov)
			SMB2_close_free(&rqst[2]);
		if (rc)
			trace_smb3_query_info_compound_err(xid,  ses->Suid,
						tcon->tid, rc);
		else
			trace_smb3_query_info_compound_done(xid, ses->Suid,
						tcon->tid);
		break;
	case SMB2_OP_POSIX_QUERY_INFO:
		if (rc == 0) {
			qi_rsp = (struct smb2_query_info_rsp *)
				rsp_iov[1].iov_base;
			rc = smb2_validate_and_copy_iov(
				le16_to_cpu(qi_rsp->OutputBufferOffset),
				le32_to_cpu(qi_rsp->OutputBufferLength),
				&rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
		}
		if (rqst[1].rq_iov)
			SMB2_query_info_free(&rqst[1]);
		if (rqst[2].rq_iov)
			SMB2_close_free(&rqst[2]);
		if (rc)
			trace_smb3_posix_query_info_compound_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
		break;
	case SMB2_OP_DELETE:
		if (rc)
			trace_smb3_delete_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
		if (rqst[1].rq_iov)
			SMB2_close_free(&rqst[1]);
		break;
	case SMB2_OP_MKDIR:
		if (rc)
			trace_smb3_mkdir_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
		if (rqst[1].rq_iov)
			SMB2_close_free(&rqst[1]);
		break;
	case SMB2_OP_HARDLINK:
		if (rc)
			trace_smb3_hardlink_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_RENAME:
		if (rc)
			trace_smb3_rename_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_RMDIR:
		if (rc)
			trace_smb3_rmdir_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_SET_EOF:
		if (rc)
			trace_smb3_set_eof_err(xid,  ses->Suid, tcon->tid, rc);
		else
			trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
		free_set_inf_compound(rqst);
		break;
	case SMB2_OP_SET_INFO:
		if (rc)
			trace_smb3_set_info_compound_err(xid,  ses->Suid,
						tcon->tid, rc);
		else
			trace_smb3_set_info_compound_done(xid, ses->Suid,
						tcon->tid);
		free_set_inf_compound(rqst);
		break;
	}
	free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
	free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
	free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
	kfree(vars);
	return rc;
}

void
move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
{
	memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
	dst->CurrentByteOffset = src->CurrentByteOffset;
	dst->Mode = src->Mode;
	dst->AlignmentRequirement = src->AlignmentRequirement;
	dst->IndexNumber1 = 0; /* we don't use it */
}

int
smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
		     struct cifs_sb_info *cifs_sb, const char *full_path,
		     FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
{
	int rc;
	struct smb2_file_all_info *smb2_data;
	__u32 create_options = 0;
	bool no_cached_open = tcon->nohandlecache;
	struct cifsFileInfo *cfile;
	struct cached_fid *cfid = NULL;

	*adjust_tz = false;
	*reparse = false;

	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
			    GFP_KERNEL);
	if (smb2_data == NULL)
		return -ENOMEM;

	/* If it is a root and its handle is cached then use it */
	if (!strlen(full_path) && !no_cached_open) {
		rc = open_shroot(xid, tcon, cifs_sb, &cfid);
		if (rc)
			goto out;

		if (tcon->crfid.file_all_info_is_valid) {
			move_smb2_info_to_cifs(data,
					       &tcon->crfid.file_all_info);
		} else {
			rc = SMB2_query_info(xid, tcon,
					     cfid->fid->persistent_fid,
					     cfid->fid->volatile_fid, smb2_data);
			if (!rc)
				move_smb2_info_to_cifs(data, smb2_data);
		}
		close_shroot(cfid);
		goto out;
	}

	cifs_get_readable_path(tcon, full_path, &cfile);
	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
			      FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
			      ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
	if (rc == -EOPNOTSUPP) {
		*reparse = true;
		create_options |= OPEN_REPARSE_POINT;

		/* Failed on a symbolic link - query a reparse point info */
		rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
				      FILE_READ_ATTRIBUTES, FILE_OPEN,
				      create_options, ACL_NO_MODE,
				      smb2_data, SMB2_OP_QUERY_INFO, NULL);
	}
	if (rc)
		goto out;

	move_smb2_info_to_cifs(data, smb2_data);
out:
	kfree(smb2_data);
	return rc;
}


int
smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
		     struct cifs_sb_info *cifs_sb, const char *full_path,
		     struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
{
	int rc;
	__u32 create_options = 0;
	struct cifsFileInfo *cfile;
	struct smb311_posix_qinfo *smb2_data;

	*adjust_tz = false;
	*reparse = false;

	/* BB TODO: Make struct larger when add support for parsing owner SIDs */
	smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
			    GFP_KERNEL);
	if (smb2_data == NULL)
		return -ENOMEM;

	/*
	 * BB TODO: Add support for using the cached root handle.
	 * Create SMB2_query_posix_info worker function to do non-compounded query
	 * when we already have an open file handle for this. For now this is fast enough
	 * (always using the compounded version).
	 */

	cifs_get_readable_path(tcon, full_path, &cfile);
	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
			      FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
			      ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
	if (rc == -EOPNOTSUPP) {
		/* BB TODO: When support for special files added to Samba re-verify this path */
		*reparse = true;
		create_options |= OPEN_REPARSE_POINT;

		/* Failed on a symbolic link - query a reparse point info */
		rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
				      FILE_READ_ATTRIBUTES, FILE_OPEN,
				      create_options, ACL_NO_MODE,
				      smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
	}
	if (rc)
		goto out;

	 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
	memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));

out:
	kfree(smb2_data);
	return rc;
}

int
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
	   struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name,
				FILE_WRITE_ATTRIBUTES, FILE_CREATE,
				CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
				NULL);
}

void
smb2_mkdir_setinfo(struct inode *inode, const char *name,
		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
		   const unsigned int xid)
{
	FILE_BASIC_INFO data;
	struct cifsInodeInfo *cifs_i;
	struct cifsFileInfo *cfile;
	u32 dosattrs;
	int tmprc;

	memset(&data, 0, sizeof(data));
	cifs_i = CIFS_I(inode);
	dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
	data.Attributes = cpu_to_le32(dosattrs);
	cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
	tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
				 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
				 CREATE_NOT_FILE, ACL_NO_MODE,
				 &data, SMB2_OP_SET_INFO, cfile);
	if (tmprc == 0)
		cifs_i->cifsAttrs = dosattrs;
}

int
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	   struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
				CREATE_NOT_FILE, ACL_NO_MODE,
				NULL, SMB2_OP_RMDIR, NULL);
}

int
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
	    struct cifs_sb_info *cifs_sb)
{
	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
				CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
				ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
}

static int
smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
		   const char *from_name, const char *to_name,
		   struct cifs_sb_info *cifs_sb, __u32 access, int command,
		   struct cifsFileInfo *cfile)
{
	__le16 *smb2_to_name = NULL;
	int rc;

	smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
	if (smb2_to_name == NULL) {
		rc = -ENOMEM;
		goto smb2_rename_path;
	}
	rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
			      FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
			      command, cfile);
smb2_rename_path:
	kfree(smb2_to_name);
	return rc;
}

int
smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
		 const char *from_name, const char *to_name,
		 struct cifs_sb_info *cifs_sb)
{
	struct cifsFileInfo *cfile;

	cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);

	return smb2_set_path_attr(xid, tcon, from_name, to_name,
				  cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
}

int
smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
		     const char *from_name, const char *to_name,
		     struct cifs_sb_info *cifs_sb)
{
	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
				  FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
				  NULL);
}

int
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
		   const char *full_path, __u64 size,
		   struct cifs_sb_info *cifs_sb, bool set_alloc)
{
	__le64 eof = cpu_to_le64(size);

	return smb2_compound_op(xid, tcon, cifs_sb, full_path,
				FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
				&eof, SMB2_OP_SET_EOF, NULL);
}

int
smb2_set_file_info(struct inode *inode, const char *full_path,
		   FILE_BASIC_INFO *buf, const unsigned int xid)
{
	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
	struct tcon_link *tlink;
	int rc;

	if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
	    (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
	    (buf->Attributes == 0))
		return 0; /* would be a no op, no sense sending this */

	tlink = cifs_sb_tlink(cifs_sb);
	if (IS_ERR(tlink))
		return PTR_ERR(tlink);

	rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
			      FILE_WRITE_ATTRIBUTES, FILE_OPEN,
			      0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
	cifs_put_tlink(tlink);
	return rc;
}