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10#include <linux/fs.h>
11#include <linux/stat.h>
12#include <linux/slab.h>
13#include <linux/namei.h>
14#include <linux/mount.h>
15#include <linux/file.h>
16#include "cifsfs.h"
17#include "cifspdu.h"
18#include "cifsglob.h"
19#include "cifsproto.h"
20#include "cifs_debug.h"
21#include "cifs_fs_sb.h"
22#include "cifs_unicode.h"
23#include "fs_context.h"
24#include "cifs_ioctl.h"
25#include "fscache.h"
26
27static void
28renew_parental_timestamps(struct dentry *direntry)
29{
30
31
32 do {
33 cifs_set_time(direntry, jiffies);
34 direntry = direntry->d_parent;
35 } while (!IS_ROOT(direntry));
36}
37
38char *
39cifs_build_path_to_root(struct smb3_fs_context *ctx, struct cifs_sb_info *cifs_sb,
40 struct cifs_tcon *tcon, int add_treename)
41{
42 int pplen = ctx->prepath ? strlen(ctx->prepath) + 1 : 0;
43 int dfsplen;
44 char *full_path = NULL;
45
46
47 if (pplen == 0) {
48 full_path = kzalloc(1, GFP_KERNEL);
49 return full_path;
50 }
51
52 if (add_treename)
53 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
54 else
55 dfsplen = 0;
56
57 full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
58 if (full_path == NULL)
59 return full_path;
60
61 if (dfsplen)
62 memcpy(full_path, tcon->treeName, dfsplen);
63 full_path[dfsplen] = CIFS_DIR_SEP(cifs_sb);
64 memcpy(full_path + dfsplen + 1, ctx->prepath, pplen);
65 convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
66 return full_path;
67}
68
69
70const char *
71build_path_from_dentry(struct dentry *direntry, void *page)
72{
73 struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
74 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
75 bool prefix = tcon->Flags & SMB_SHARE_IS_IN_DFS;
76
77 return build_path_from_dentry_optional_prefix(direntry, page,
78 prefix);
79}
80
81char *
82build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page,
83 bool prefix)
84{
85 int dfsplen;
86 int pplen = 0;
87 struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
88 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
89 char dirsep = CIFS_DIR_SEP(cifs_sb);
90 char *s;
91
92 if (unlikely(!page))
93 return ERR_PTR(-ENOMEM);
94
95 if (prefix)
96 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
97 else
98 dfsplen = 0;
99
100 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
101 pplen = cifs_sb->prepath ? strlen(cifs_sb->prepath) + 1 : 0;
102
103 s = dentry_path_raw(direntry, page, PATH_MAX);
104 if (IS_ERR(s))
105 return s;
106 if (!s[1])
107 s++;
108 if (s < (char *)page + pplen + dfsplen)
109 return ERR_PTR(-ENAMETOOLONG);
110 if (pplen) {
111 cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath);
112 s -= pplen;
113 memcpy(s + 1, cifs_sb->prepath, pplen - 1);
114 *s = '/';
115 }
116 if (dirsep != '/') {
117
118 char *p;
119
120 for (p = s; *p; p++)
121 if (*p == '/')
122 *p = dirsep;
123 }
124 if (dfsplen) {
125 s -= dfsplen;
126 memcpy(s, tcon->treeName, dfsplen);
127 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
128 int i;
129 for (i = 0; i < dfsplen; i++) {
130 if (s[i] == '\\')
131 s[i] = '/';
132 }
133 }
134 }
135 return s;
136}
137
138
139
140
141
142
143static int
144check_name(struct dentry *direntry, struct cifs_tcon *tcon)
145{
146 struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
147 int i;
148
149 if (unlikely(tcon->fsAttrInfo.MaxPathNameComponentLength &&
150 direntry->d_name.len >
151 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength)))
152 return -ENAMETOOLONG;
153
154 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
155 for (i = 0; i < direntry->d_name.len; i++) {
156 if (direntry->d_name.name[i] == '\\') {
157 cifs_dbg(FYI, "Invalid file name\n");
158 return -EINVAL;
159 }
160 }
161 }
162 return 0;
163}
164
165
166
167
168static int
169cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
170 struct tcon_link *tlink, unsigned oflags, umode_t mode,
171 __u32 *oplock, struct cifs_fid *fid)
172{
173 int rc = -ENOENT;
174 int create_options = CREATE_NOT_DIR;
175 int desired_access;
176 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
177 struct cifs_tcon *tcon = tlink_tcon(tlink);
178 const char *full_path;
179 void *page = alloc_dentry_path();
180 FILE_ALL_INFO *buf = NULL;
181 struct inode *newinode = NULL;
182 int disposition;
183 struct TCP_Server_Info *server = tcon->ses->server;
184 struct cifs_open_parms oparms;
185
186 *oplock = 0;
187 if (tcon->ses->server->oplocks)
188 *oplock = REQ_OPLOCK;
189
190 full_path = build_path_from_dentry(direntry, page);
191 if (IS_ERR(full_path)) {
192 free_dentry_path(page);
193 return PTR_ERR(full_path);
194 }
195
196 if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
197 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
198 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
199 rc = cifs_posix_open(full_path, &newinode, inode->i_sb, mode,
200 oflags, oplock, &fid->netfid, xid);
201 switch (rc) {
202 case 0:
203 if (newinode == NULL) {
204
205 goto cifs_create_get_file_info;
206 }
207
208 if (S_ISDIR(newinode->i_mode)) {
209 CIFSSMBClose(xid, tcon, fid->netfid);
210 iput(newinode);
211 rc = -EISDIR;
212 goto out;
213 }
214
215 if (!S_ISREG(newinode->i_mode)) {
216
217
218
219
220
221
222
223 CIFSSMBClose(xid, tcon, fid->netfid);
224 goto cifs_create_get_file_info;
225 }
226
227 goto cifs_create_set_dentry;
228
229 case -ENOENT:
230 goto cifs_create_get_file_info;
231
232 case -EIO:
233 case -EINVAL:
234
235
236
237
238
239
240
241
242 tcon->broken_posix_open = true;
243 break;
244
245 case -EREMOTE:
246 case -EOPNOTSUPP:
247
248
249
250
251
252 break;
253
254 default:
255 goto out;
256 }
257
258
259
260
261
262
263 }
264
265 desired_access = 0;
266 if (OPEN_FMODE(oflags) & FMODE_READ)
267 desired_access |= GENERIC_READ;
268 if (OPEN_FMODE(oflags) & FMODE_WRITE)
269 desired_access |= GENERIC_WRITE;
270
271 disposition = FILE_OVERWRITE_IF;
272 if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
273 disposition = FILE_CREATE;
274 else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
275 disposition = FILE_OVERWRITE_IF;
276 else if ((oflags & O_CREAT) == O_CREAT)
277 disposition = FILE_OPEN_IF;
278 else
279 cifs_dbg(FYI, "Create flag not set in create function\n");
280
281
282
283
284
285
286 if (!server->ops->open) {
287 rc = -ENOSYS;
288 goto out;
289 }
290
291 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
292 if (buf == NULL) {
293 rc = -ENOMEM;
294 goto out;
295 }
296
297
298
299
300
301 if (!tcon->unix_ext && (mode & S_IWUGO) == 0)
302 create_options |= CREATE_OPTION_READONLY;
303
304 oparms.tcon = tcon;
305 oparms.cifs_sb = cifs_sb;
306 oparms.desired_access = desired_access;
307 oparms.create_options = cifs_create_options(cifs_sb, create_options);
308 oparms.disposition = disposition;
309 oparms.path = full_path;
310 oparms.fid = fid;
311 oparms.reconnect = false;
312 oparms.mode = mode;
313 rc = server->ops->open(xid, &oparms, oplock, buf);
314 if (rc) {
315 cifs_dbg(FYI, "cifs_create returned 0x%x\n", rc);
316 goto out;
317 }
318
319
320
321
322
323 if ((tcon->unix_ext) && (*oplock & CIFS_CREATE_ACTION)) {
324 struct cifs_unix_set_info_args args = {
325 .mode = mode,
326 .ctime = NO_CHANGE_64,
327 .atime = NO_CHANGE_64,
328 .mtime = NO_CHANGE_64,
329 .device = 0,
330 };
331
332 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
333 args.uid = current_fsuid();
334 if (inode->i_mode & S_ISGID)
335 args.gid = inode->i_gid;
336 else
337 args.gid = current_fsgid();
338 } else {
339 args.uid = INVALID_UID;
340 args.gid = INVALID_GID;
341 }
342 CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid->netfid,
343 current->tgid);
344 } else {
345
346
347
348
349
350
351
352 }
353
354cifs_create_get_file_info:
355
356 if (tcon->unix_ext)
357 rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,
358 xid);
359 else {
360
361 rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
362 xid, fid);
363 if (newinode) {
364 if (server->ops->set_lease_key)
365 server->ops->set_lease_key(newinode, fid);
366 if ((*oplock & CIFS_CREATE_ACTION) && S_ISREG(newinode->i_mode)) {
367 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
368 newinode->i_mode = mode;
369 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
370 newinode->i_uid = current_fsuid();
371 if (inode->i_mode & S_ISGID)
372 newinode->i_gid = inode->i_gid;
373 else
374 newinode->i_gid = current_fsgid();
375 }
376 }
377 }
378 }
379
380cifs_create_set_dentry:
381 if (rc != 0) {
382 cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
383 rc);
384 goto out_err;
385 }
386
387 if (newinode)
388 if (S_ISDIR(newinode->i_mode)) {
389 rc = -EISDIR;
390 goto out_err;
391 }
392
393 d_drop(direntry);
394 d_add(direntry, newinode);
395
396out:
397 kfree(buf);
398 free_dentry_path(page);
399 return rc;
400
401out_err:
402 if (server->ops->close)
403 server->ops->close(xid, tcon, fid);
404 if (newinode)
405 iput(newinode);
406 goto out;
407}
408
409int
410cifs_atomic_open(struct inode *inode, struct dentry *direntry,
411 struct file *file, unsigned oflags, umode_t mode)
412{
413 int rc;
414 unsigned int xid;
415 struct tcon_link *tlink;
416 struct cifs_tcon *tcon;
417 struct TCP_Server_Info *server;
418 struct cifs_fid fid;
419 struct cifs_pending_open open;
420 __u32 oplock;
421 struct cifsFileInfo *file_info;
422
423 if (unlikely(cifs_forced_shutdown(CIFS_SB(inode->i_sb))))
424 return -EIO;
425
426
427
428
429
430
431
432
433
434
435
436
437 if (!(oflags & O_CREAT)) {
438 struct dentry *res;
439
440
441
442
443
444 if (!d_in_lookup(direntry))
445 return -ENOENT;
446
447 res = cifs_lookup(inode, direntry, 0);
448 if (IS_ERR(res))
449 return PTR_ERR(res);
450
451 return finish_no_open(file, res);
452 }
453
454 xid = get_xid();
455
456 cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n",
457 inode, direntry, direntry);
458
459 tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
460 if (IS_ERR(tlink)) {
461 rc = PTR_ERR(tlink);
462 goto out_free_xid;
463 }
464
465 tcon = tlink_tcon(tlink);
466
467 rc = check_name(direntry, tcon);
468 if (rc)
469 goto out;
470
471 server = tcon->ses->server;
472
473 if (server->ops->new_lease_key)
474 server->ops->new_lease_key(&fid);
475
476 cifs_add_pending_open(&fid, tlink, &open);
477
478 rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
479 &oplock, &fid);
480
481 if (rc) {
482 cifs_del_pending_open(&open);
483 goto out;
484 }
485
486 if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
487 file->f_mode |= FMODE_CREATED;
488
489 rc = finish_open(file, direntry, generic_file_open);
490 if (rc) {
491 if (server->ops->close)
492 server->ops->close(xid, tcon, &fid);
493 cifs_del_pending_open(&open);
494 goto out;
495 }
496
497 if (file->f_flags & O_DIRECT &&
498 CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) {
499 if (CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
500 file->f_op = &cifs_file_direct_nobrl_ops;
501 else
502 file->f_op = &cifs_file_direct_ops;
503 }
504
505 file_info = cifs_new_fileinfo(&fid, file, tlink, oplock);
506 if (file_info == NULL) {
507 if (server->ops->close)
508 server->ops->close(xid, tcon, &fid);
509 cifs_del_pending_open(&open);
510 rc = -ENOMEM;
511 goto out;
512 }
513
514 fscache_use_cookie(cifs_inode_cookie(file_inode(file)),
515 file->f_mode & FMODE_WRITE);
516
517out:
518 cifs_put_tlink(tlink);
519out_free_xid:
520 free_xid(xid);
521 return rc;
522}
523
524int cifs_create(struct user_namespace *mnt_userns, struct inode *inode,
525 struct dentry *direntry, umode_t mode, bool excl)
526{
527 int rc;
528 unsigned int xid = get_xid();
529
530
531
532
533
534
535
536 unsigned oflags = O_EXCL | O_CREAT | O_RDWR;
537 struct tcon_link *tlink;
538 struct cifs_tcon *tcon;
539 struct TCP_Server_Info *server;
540 struct cifs_fid fid;
541 __u32 oplock;
542
543 cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %pd and dentry = 0x%p\n",
544 inode, direntry, direntry);
545
546 if (unlikely(cifs_forced_shutdown(CIFS_SB(inode->i_sb))))
547 return -EIO;
548
549 tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
550 rc = PTR_ERR(tlink);
551 if (IS_ERR(tlink))
552 goto out_free_xid;
553
554 tcon = tlink_tcon(tlink);
555 server = tcon->ses->server;
556
557 if (server->ops->new_lease_key)
558 server->ops->new_lease_key(&fid);
559
560 rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
561 &oplock, &fid);
562 if (!rc && server->ops->close)
563 server->ops->close(xid, tcon, &fid);
564
565 cifs_put_tlink(tlink);
566out_free_xid:
567 free_xid(xid);
568 return rc;
569}
570
571int cifs_mknod(struct user_namespace *mnt_userns, struct inode *inode,
572 struct dentry *direntry, umode_t mode, dev_t device_number)
573{
574 int rc = -EPERM;
575 unsigned int xid;
576 struct cifs_sb_info *cifs_sb;
577 struct tcon_link *tlink;
578 struct cifs_tcon *tcon;
579 const char *full_path;
580 void *page;
581
582 if (!old_valid_dev(device_number))
583 return -EINVAL;
584
585 cifs_sb = CIFS_SB(inode->i_sb);
586 if (unlikely(cifs_forced_shutdown(cifs_sb)))
587 return -EIO;
588
589 tlink = cifs_sb_tlink(cifs_sb);
590 if (IS_ERR(tlink))
591 return PTR_ERR(tlink);
592
593 page = alloc_dentry_path();
594 tcon = tlink_tcon(tlink);
595 xid = get_xid();
596
597 full_path = build_path_from_dentry(direntry, page);
598 if (IS_ERR(full_path)) {
599 rc = PTR_ERR(full_path);
600 goto mknod_out;
601 }
602
603 rc = tcon->ses->server->ops->make_node(xid, inode, direntry, tcon,
604 full_path, mode,
605 device_number);
606
607mknod_out:
608 free_dentry_path(page);
609 free_xid(xid);
610 cifs_put_tlink(tlink);
611 return rc;
612}
613
614struct dentry *
615cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
616 unsigned int flags)
617{
618 unsigned int xid;
619 int rc = 0;
620 struct cifs_sb_info *cifs_sb;
621 struct tcon_link *tlink;
622 struct cifs_tcon *pTcon;
623 struct inode *newInode = NULL;
624 const char *full_path;
625 void *page;
626 int retry_count = 0;
627
628 xid = get_xid();
629
630 cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n",
631 parent_dir_inode, direntry, direntry);
632
633
634
635 cifs_sb = CIFS_SB(parent_dir_inode->i_sb);
636 tlink = cifs_sb_tlink(cifs_sb);
637 if (IS_ERR(tlink)) {
638 free_xid(xid);
639 return ERR_CAST(tlink);
640 }
641 pTcon = tlink_tcon(tlink);
642
643 rc = check_name(direntry, pTcon);
644 if (unlikely(rc)) {
645 cifs_put_tlink(tlink);
646 free_xid(xid);
647 return ERR_PTR(rc);
648 }
649
650
651
652
653 page = alloc_dentry_path();
654 full_path = build_path_from_dentry(direntry, page);
655 if (IS_ERR(full_path)) {
656 cifs_put_tlink(tlink);
657 free_xid(xid);
658 free_dentry_path(page);
659 return ERR_CAST(full_path);
660 }
661
662 if (d_really_is_positive(direntry)) {
663 cifs_dbg(FYI, "non-NULL inode in lookup\n");
664 } else {
665 cifs_dbg(FYI, "NULL inode in lookup\n");
666 }
667 cifs_dbg(FYI, "Full path: %s inode = 0x%p\n",
668 full_path, d_inode(direntry));
669
670again:
671 if (pTcon->posix_extensions)
672 rc = smb311_posix_get_inode_info(&newInode, full_path, parent_dir_inode->i_sb, xid);
673 else if (pTcon->unix_ext) {
674 rc = cifs_get_inode_info_unix(&newInode, full_path,
675 parent_dir_inode->i_sb, xid);
676 } else {
677 rc = cifs_get_inode_info(&newInode, full_path, NULL,
678 parent_dir_inode->i_sb, xid, NULL);
679 }
680
681 if (rc == 0) {
682
683
684 renew_parental_timestamps(direntry);
685 } else if (rc == -EAGAIN && retry_count++ < 10) {
686 goto again;
687 } else if (rc == -ENOENT) {
688 cifs_set_time(direntry, jiffies);
689 newInode = NULL;
690 } else {
691 if (rc != -EACCES) {
692 cifs_dbg(FYI, "Unexpected lookup error %d\n", rc);
693
694
695 }
696 newInode = ERR_PTR(rc);
697 }
698 free_dentry_path(page);
699 cifs_put_tlink(tlink);
700 free_xid(xid);
701 return d_splice_alias(newInode, direntry);
702}
703
704static int
705cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
706{
707 struct inode *inode;
708 int rc;
709
710 if (flags & LOOKUP_RCU)
711 return -ECHILD;
712
713 if (d_really_is_positive(direntry)) {
714 inode = d_inode(direntry);
715 if ((flags & LOOKUP_REVAL) && !CIFS_CACHE_READ(CIFS_I(inode)))
716 CIFS_I(inode)->time = 0;
717
718 rc = cifs_revalidate_dentry(direntry);
719 if (rc) {
720 cifs_dbg(FYI, "cifs_revalidate_dentry failed with rc=%d", rc);
721 switch (rc) {
722 case -ENOENT:
723 case -ESTALE:
724
725
726
727
728 return 0;
729 default:
730
731
732
733
734 return rc;
735 }
736 }
737 else {
738
739
740
741
742
743
744
745 if (IS_AUTOMOUNT(inode) &&
746 !(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) {
747 spin_lock(&direntry->d_lock);
748 direntry->d_flags |= DCACHE_NEED_AUTOMOUNT;
749 spin_unlock(&direntry->d_lock);
750 }
751
752 return 1;
753 }
754 }
755
756
757
758
759
760 if (!flags)
761 return 0;
762
763
764
765
766
767
768 if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
769 return 0;
770
771 if (time_after(jiffies, cifs_get_time(direntry) + HZ) || !lookupCacheEnabled)
772 return 0;
773
774 return 1;
775}
776
777
778
779
780
781
782
783
784
785
786const struct dentry_operations cifs_dentry_ops = {
787 .d_revalidate = cifs_d_revalidate,
788 .d_automount = cifs_dfs_d_automount,
789
790};
791
792static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q)
793{
794 struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls;
795 unsigned long hash;
796 wchar_t c;
797 int i, charlen;
798
799 hash = init_name_hash(dentry);
800 for (i = 0; i < q->len; i += charlen) {
801 charlen = codepage->char2uni(&q->name[i], q->len - i, &c);
802
803 if (unlikely(charlen < 0))
804 return charlen;
805 hash = partial_name_hash(cifs_toupper(c), hash);
806 }
807 q->hash = end_name_hash(hash);
808
809 return 0;
810}
811
812static int cifs_ci_compare(const struct dentry *dentry,
813 unsigned int len, const char *str, const struct qstr *name)
814{
815 struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls;
816 wchar_t c1, c2;
817 int i, l1, l2;
818
819
820
821
822
823
824
825 if (name->len != len)
826 return 1;
827
828 for (i = 0; i < len; i += l1) {
829
830 l1 = codepage->char2uni(&str[i], len - i, &c1);
831 l2 = codepage->char2uni(&name->name[i], name->len - i, &c2);
832
833
834
835
836
837 if (unlikely(l1 < 0 && l2 < 0)) {
838 if (str[i] != name->name[i])
839 return 1;
840 l1 = 1;
841 continue;
842 }
843
844
845
846
847
848 if (l1 != l2)
849 return 1;
850
851
852 if (cifs_toupper(c1) != cifs_toupper(c2))
853 return 1;
854 }
855
856 return 0;
857}
858
859const struct dentry_operations cifs_ci_dentry_ops = {
860 .d_revalidate = cifs_d_revalidate,
861 .d_hash = cifs_ci_hash,
862 .d_compare = cifs_ci_compare,
863 .d_automount = cifs_dfs_d_automount,
864};
865