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23#include <linux/fs.h>
24#include <linux/stat.h>
25#include <linux/slab.h>
26#include <linux/namei.h>
27#include <linux/mount.h>
28#include <linux/file.h>
29#include "cifsfs.h"
30#include "cifspdu.h"
31#include "cifsglob.h"
32#include "cifsproto.h"
33#include "cifs_debug.h"
34#include "cifs_fs_sb.h"
35
36static void
37renew_parental_timestamps(struct dentry *direntry)
38{
39
40
41 do {
42 direntry->d_time = jiffies;
43 direntry = direntry->d_parent;
44 } while (!IS_ROOT(direntry));
45}
46
47char *
48cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
49 struct cifs_tcon *tcon)
50{
51 int pplen = vol->prepath ? strlen(vol->prepath) + 1 : 0;
52 int dfsplen;
53 char *full_path = NULL;
54
55
56 if (pplen == 0) {
57 full_path = kzalloc(1, GFP_KERNEL);
58 return full_path;
59 }
60
61 if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
62 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
63 else
64 dfsplen = 0;
65
66 full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
67 if (full_path == NULL)
68 return full_path;
69
70 if (dfsplen)
71 strncpy(full_path, tcon->treeName, dfsplen);
72 full_path[dfsplen] = CIFS_DIR_SEP(cifs_sb);
73 strncpy(full_path + dfsplen + 1, vol->prepath, pplen);
74 convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
75 full_path[dfsplen + pplen] = 0;
76 return full_path;
77}
78
79
80char *
81build_path_from_dentry(struct dentry *direntry)
82{
83 struct dentry *temp;
84 int namelen;
85 int dfsplen;
86 char *full_path;
87 char dirsep;
88 struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
89 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
90 unsigned seq;
91
92 dirsep = CIFS_DIR_SEP(cifs_sb);
93 if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
94 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
95 else
96 dfsplen = 0;
97cifs_bp_rename_retry:
98 namelen = dfsplen;
99 seq = read_seqbegin(&rename_lock);
100 rcu_read_lock();
101 for (temp = direntry; !IS_ROOT(temp);) {
102 namelen += (1 + temp->d_name.len);
103 temp = temp->d_parent;
104 if (temp == NULL) {
105 cifs_dbg(VFS, "corrupt dentry\n");
106 rcu_read_unlock();
107 return NULL;
108 }
109 }
110 rcu_read_unlock();
111
112 full_path = kmalloc(namelen+1, GFP_KERNEL);
113 if (full_path == NULL)
114 return full_path;
115 full_path[namelen] = 0;
116 rcu_read_lock();
117 for (temp = direntry; !IS_ROOT(temp);) {
118 spin_lock(&temp->d_lock);
119 namelen -= 1 + temp->d_name.len;
120 if (namelen < 0) {
121 spin_unlock(&temp->d_lock);
122 break;
123 } else {
124 full_path[namelen] = dirsep;
125 strncpy(full_path + namelen + 1, temp->d_name.name,
126 temp->d_name.len);
127 cifs_dbg(FYI, "name: %s\n", full_path + namelen);
128 }
129 spin_unlock(&temp->d_lock);
130 temp = temp->d_parent;
131 if (temp == NULL) {
132 cifs_dbg(VFS, "corrupt dentry\n");
133 rcu_read_unlock();
134 kfree(full_path);
135 return NULL;
136 }
137 }
138 rcu_read_unlock();
139 if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
140 cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n",
141 namelen, dfsplen);
142
143
144
145 kfree(full_path);
146 goto cifs_bp_rename_retry;
147 }
148
149
150
151
152
153
154
155 if (dfsplen) {
156 strncpy(full_path, tcon->treeName, dfsplen);
157 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
158 int i;
159 for (i = 0; i < dfsplen; i++) {
160 if (full_path[i] == '\\')
161 full_path[i] = '/';
162 }
163 }
164 }
165 return full_path;
166}
167
168
169
170
171
172static int
173check_name(struct dentry *direntry)
174{
175 struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
176 int i;
177
178 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) {
179 for (i = 0; i < direntry->d_name.len; i++) {
180 if (direntry->d_name.name[i] == '\\') {
181 cifs_dbg(FYI, "Invalid file name\n");
182 return -EINVAL;
183 }
184 }
185 }
186 return 0;
187}
188
189
190
191
192static int
193cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
194 struct tcon_link *tlink, unsigned oflags, umode_t mode,
195 __u32 *oplock, struct cifs_fid *fid, int *created)
196{
197 int rc = -ENOENT;
198 int create_options = CREATE_NOT_DIR;
199 int desired_access;
200 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
201 struct cifs_tcon *tcon = tlink_tcon(tlink);
202 char *full_path = NULL;
203 FILE_ALL_INFO *buf = NULL;
204 struct inode *newinode = NULL;
205 int disposition;
206 struct TCP_Server_Info *server = tcon->ses->server;
207 struct cifs_open_parms oparms;
208
209 *oplock = 0;
210 if (tcon->ses->server->oplocks)
211 *oplock = REQ_OPLOCK;
212
213 full_path = build_path_from_dentry(direntry);
214 if (full_path == NULL) {
215 rc = -ENOMEM;
216 goto out;
217 }
218
219 if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
220 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
221 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
222 rc = cifs_posix_open(full_path, &newinode, inode->i_sb, mode,
223 oflags, oplock, &fid->netfid, xid);
224 switch (rc) {
225 case 0:
226 if (newinode == NULL) {
227
228 goto cifs_create_get_file_info;
229 }
230
231 if (!S_ISREG(newinode->i_mode)) {
232
233
234
235
236
237
238
239 CIFSSMBClose(xid, tcon, fid->netfid);
240 goto cifs_create_get_file_info;
241 }
242
243 goto cifs_create_set_dentry;
244
245 case -ENOENT:
246 goto cifs_create_get_file_info;
247
248 case -EIO:
249 case -EINVAL:
250
251
252
253
254
255
256
257
258 tcon->broken_posix_open = true;
259 break;
260
261 case -EREMOTE:
262 case -EOPNOTSUPP:
263
264
265
266
267
268 break;
269
270 default:
271 goto out;
272 }
273
274
275
276
277
278
279 }
280
281 desired_access = 0;
282 if (OPEN_FMODE(oflags) & FMODE_READ)
283 desired_access |= GENERIC_READ;
284 if (OPEN_FMODE(oflags) & FMODE_WRITE)
285 desired_access |= GENERIC_WRITE;
286
287 disposition = FILE_OVERWRITE_IF;
288 if ((oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
289 disposition = FILE_CREATE;
290 else if ((oflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
291 disposition = FILE_OVERWRITE_IF;
292 else if ((oflags & O_CREAT) == O_CREAT)
293 disposition = FILE_OPEN_IF;
294 else
295 cifs_dbg(FYI, "Create flag not set in create function\n");
296
297
298
299
300
301
302 if (!server->ops->open) {
303 rc = -ENOSYS;
304 goto out;
305 }
306
307 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
308 if (buf == NULL) {
309 rc = -ENOMEM;
310 goto out;
311 }
312
313
314
315
316
317 if (!tcon->unix_ext && (mode & S_IWUGO) == 0)
318 create_options |= CREATE_OPTION_READONLY;
319
320 if (backup_cred(cifs_sb))
321 create_options |= CREATE_OPEN_BACKUP_INTENT;
322
323 oparms.tcon = tcon;
324 oparms.cifs_sb = cifs_sb;
325 oparms.desired_access = desired_access;
326 oparms.create_options = create_options;
327 oparms.disposition = disposition;
328 oparms.path = full_path;
329 oparms.fid = fid;
330 oparms.reconnect = false;
331
332 rc = server->ops->open(xid, &oparms, oplock, buf);
333 if (rc) {
334 cifs_dbg(FYI, "cifs_create returned 0x%x\n", rc);
335 goto out;
336 }
337
338
339
340
341
342 if ((tcon->unix_ext) && (*oplock & CIFS_CREATE_ACTION)) {
343 struct cifs_unix_set_info_args args = {
344 .mode = mode,
345 .ctime = NO_CHANGE_64,
346 .atime = NO_CHANGE_64,
347 .mtime = NO_CHANGE_64,
348 .device = 0,
349 };
350
351 *created |= FILE_CREATED;
352 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
353 args.uid = current_fsuid();
354 if (inode->i_mode & S_ISGID)
355 args.gid = inode->i_gid;
356 else
357 args.gid = current_fsgid();
358 } else {
359 args.uid = INVALID_UID;
360 args.gid = INVALID_GID;
361 }
362 CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid->netfid,
363 current->tgid);
364 } else {
365
366
367
368
369
370
371
372 }
373
374cifs_create_get_file_info:
375
376 if (tcon->unix_ext)
377 rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,
378 xid);
379 else {
380 rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
381 xid, &fid->netfid);
382 if (newinode) {
383 if (server->ops->set_lease_key)
384 server->ops->set_lease_key(newinode, fid);
385 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
386 newinode->i_mode = mode;
387 if ((*oplock & CIFS_CREATE_ACTION) &&
388 (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) {
389 newinode->i_uid = current_fsuid();
390 if (inode->i_mode & S_ISGID)
391 newinode->i_gid = inode->i_gid;
392 else
393 newinode->i_gid = current_fsgid();
394 }
395 }
396 }
397
398cifs_create_set_dentry:
399 if (rc != 0) {
400 cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
401 rc);
402 if (server->ops->close)
403 server->ops->close(xid, tcon, fid);
404 goto out;
405 }
406 d_drop(direntry);
407 d_add(direntry, newinode);
408
409out:
410 kfree(buf);
411 kfree(full_path);
412 return rc;
413}
414
415int
416cifs_atomic_open(struct inode *inode, struct dentry *direntry,
417 struct file *file, unsigned oflags, umode_t mode,
418 int *opened)
419{
420 int rc;
421 unsigned int xid;
422 struct tcon_link *tlink;
423 struct cifs_tcon *tcon;
424 struct TCP_Server_Info *server;
425 struct cifs_fid fid;
426 struct cifs_pending_open open;
427 __u32 oplock;
428 struct cifsFileInfo *file_info;
429
430
431
432
433
434
435
436
437
438
439
440
441 if (!(oflags & O_CREAT)) {
442 struct dentry *res;
443
444
445
446
447
448 if (!d_unhashed(direntry))
449 return -ENOENT;
450
451 res = cifs_lookup(inode, direntry, 0);
452 if (IS_ERR(res))
453 return PTR_ERR(res);
454
455 return finish_no_open(file, res);
456 }
457
458 rc = check_name(direntry);
459 if (rc)
460 return rc;
461
462 xid = get_xid();
463
464 cifs_dbg(FYI, "parent inode = 0x%p name is: %s and dentry = 0x%p\n",
465 inode, direntry->d_name.name, direntry);
466
467 tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
468 if (IS_ERR(tlink)) {
469 rc = PTR_ERR(tlink);
470 goto out_free_xid;
471 }
472
473 tcon = tlink_tcon(tlink);
474 server = tcon->ses->server;
475
476 if (server->ops->new_lease_key)
477 server->ops->new_lease_key(&fid);
478
479 cifs_add_pending_open(&fid, tlink, &open);
480
481 rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
482 &oplock, &fid, opened);
483
484 if (rc) {
485 cifs_del_pending_open(&open);
486 goto out;
487 }
488
489 rc = finish_open(file, direntry, generic_file_open, opened);
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 file_info = cifs_new_fileinfo(&fid, file, tlink, oplock);
498 if (file_info == NULL) {
499 if (server->ops->close)
500 server->ops->close(xid, tcon, &fid);
501 cifs_del_pending_open(&open);
502 rc = -ENOMEM;
503 }
504
505out:
506 cifs_put_tlink(tlink);
507out_free_xid:
508 free_xid(xid);
509 return rc;
510}
511
512int cifs_create(struct inode *inode, struct dentry *direntry, umode_t mode,
513 bool excl)
514{
515 int rc;
516 unsigned int xid = get_xid();
517
518
519
520
521
522
523
524 unsigned oflags = O_EXCL | O_CREAT | O_RDWR;
525 struct tcon_link *tlink;
526 struct cifs_tcon *tcon;
527 struct TCP_Server_Info *server;
528 struct cifs_fid fid;
529 __u32 oplock;
530 int created = FILE_CREATED;
531
532 cifs_dbg(FYI, "cifs_create parent inode = 0x%p name is: %s and dentry = 0x%p\n",
533 inode, direntry->d_name.name, direntry);
534
535 tlink = cifs_sb_tlink(CIFS_SB(inode->i_sb));
536 rc = PTR_ERR(tlink);
537 if (IS_ERR(tlink))
538 goto out_free_xid;
539
540 tcon = tlink_tcon(tlink);
541 server = tcon->ses->server;
542
543 if (server->ops->new_lease_key)
544 server->ops->new_lease_key(&fid);
545
546 rc = cifs_do_create(inode, direntry, xid, tlink, oflags, mode,
547 &oplock, &fid, &created);
548 if (!rc && server->ops->close)
549 server->ops->close(xid, tcon, &fid);
550
551 cifs_put_tlink(tlink);
552out_free_xid:
553 free_xid(xid);
554 return rc;
555}
556
557int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
558 dev_t device_number)
559{
560 int rc = -EPERM;
561 unsigned int xid;
562 int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
563 struct cifs_sb_info *cifs_sb;
564 struct tcon_link *tlink;
565 struct cifs_tcon *pTcon;
566 struct cifs_io_parms io_parms;
567 char *full_path = NULL;
568 struct inode *newinode = NULL;
569 int oplock = 0;
570 u16 fileHandle;
571 FILE_ALL_INFO *buf = NULL;
572 unsigned int bytes_written;
573 struct win_dev *pdev;
574
575 if (!old_valid_dev(device_number))
576 return -EINVAL;
577
578 cifs_sb = CIFS_SB(inode->i_sb);
579 tlink = cifs_sb_tlink(cifs_sb);
580 if (IS_ERR(tlink))
581 return PTR_ERR(tlink);
582
583 pTcon = tlink_tcon(tlink);
584
585 xid = get_xid();
586
587 full_path = build_path_from_dentry(direntry);
588 if (full_path == NULL) {
589 rc = -ENOMEM;
590 goto mknod_out;
591 }
592
593 if (pTcon->unix_ext) {
594 struct cifs_unix_set_info_args args = {
595 .mode = mode & ~current_umask(),
596 .ctime = NO_CHANGE_64,
597 .atime = NO_CHANGE_64,
598 .mtime = NO_CHANGE_64,
599 .device = device_number,
600 };
601 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
602 args.uid = current_fsuid();
603 args.gid = current_fsgid();
604 } else {
605 args.uid = INVALID_UID;
606 args.gid = INVALID_GID;
607 }
608 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
609 cifs_sb->local_nls,
610 cifs_sb->mnt_cifs_flags &
611 CIFS_MOUNT_MAP_SPECIAL_CHR);
612 if (rc)
613 goto mknod_out;
614
615 rc = cifs_get_inode_info_unix(&newinode, full_path,
616 inode->i_sb, xid);
617
618 if (rc == 0)
619 d_instantiate(direntry, newinode);
620 goto mknod_out;
621 }
622
623 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
624 goto mknod_out;
625
626
627 cifs_dbg(FYI, "sfu compat create special file\n");
628
629 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
630 if (buf == NULL) {
631 kfree(full_path);
632 rc = -ENOMEM;
633 free_xid(xid);
634 return rc;
635 }
636
637 if (backup_cred(cifs_sb))
638 create_options |= CREATE_OPEN_BACKUP_INTENT;
639
640 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE,
641 GENERIC_WRITE, create_options,
642 &fileHandle, &oplock, buf, cifs_sb->local_nls,
643 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
644 if (rc)
645 goto mknod_out;
646
647
648
649
650 pdev = (struct win_dev *)buf;
651 io_parms.netfid = fileHandle;
652 io_parms.pid = current->tgid;
653 io_parms.tcon = pTcon;
654 io_parms.offset = 0;
655 io_parms.length = sizeof(struct win_dev);
656 if (S_ISCHR(mode)) {
657 memcpy(pdev->type, "IntxCHR", 8);
658 pdev->major =
659 cpu_to_le64(MAJOR(device_number));
660 pdev->minor =
661 cpu_to_le64(MINOR(device_number));
662 rc = CIFSSMBWrite(xid, &io_parms,
663 &bytes_written, (char *)pdev,
664 NULL, 0);
665 } else if (S_ISBLK(mode)) {
666 memcpy(pdev->type, "IntxBLK", 8);
667 pdev->major =
668 cpu_to_le64(MAJOR(device_number));
669 pdev->minor =
670 cpu_to_le64(MINOR(device_number));
671 rc = CIFSSMBWrite(xid, &io_parms,
672 &bytes_written, (char *)pdev,
673 NULL, 0);
674 }
675 CIFSSMBClose(xid, pTcon, fileHandle);
676 d_drop(direntry);
677
678
679
680mknod_out:
681 kfree(full_path);
682 kfree(buf);
683 free_xid(xid);
684 cifs_put_tlink(tlink);
685 return rc;
686}
687
688struct dentry *
689cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
690 unsigned int flags)
691{
692 unsigned int xid;
693 int rc = 0;
694 struct cifs_sb_info *cifs_sb;
695 struct tcon_link *tlink;
696 struct cifs_tcon *pTcon;
697 struct inode *newInode = NULL;
698 char *full_path = NULL;
699
700 xid = get_xid();
701
702 cifs_dbg(FYI, "parent inode = 0x%p name is: %s and dentry = 0x%p\n",
703 parent_dir_inode, direntry->d_name.name, direntry);
704
705
706
707 cifs_sb = CIFS_SB(parent_dir_inode->i_sb);
708 tlink = cifs_sb_tlink(cifs_sb);
709 if (IS_ERR(tlink)) {
710 free_xid(xid);
711 return (struct dentry *)tlink;
712 }
713 pTcon = tlink_tcon(tlink);
714
715 rc = check_name(direntry);
716 if (rc)
717 goto lookup_out;
718
719
720
721
722 full_path = build_path_from_dentry(direntry);
723 if (full_path == NULL) {
724 rc = -ENOMEM;
725 goto lookup_out;
726 }
727
728 if (direntry->d_inode != NULL) {
729 cifs_dbg(FYI, "non-NULL inode in lookup\n");
730 } else {
731 cifs_dbg(FYI, "NULL inode in lookup\n");
732 }
733 cifs_dbg(FYI, "Full path: %s inode = 0x%p\n",
734 full_path, direntry->d_inode);
735
736 if (pTcon->unix_ext) {
737 rc = cifs_get_inode_info_unix(&newInode, full_path,
738 parent_dir_inode->i_sb, xid);
739 } else {
740 rc = cifs_get_inode_info(&newInode, full_path, NULL,
741 parent_dir_inode->i_sb, xid, NULL);
742 }
743
744 if ((rc == 0) && (newInode != NULL)) {
745 d_add(direntry, newInode);
746
747
748 renew_parental_timestamps(direntry);
749
750 } else if (rc == -ENOENT) {
751 rc = 0;
752 direntry->d_time = jiffies;
753 d_add(direntry, NULL);
754
755
756 } else if (rc != -EACCES) {
757 cifs_dbg(VFS, "Unexpected lookup error %d\n", rc);
758
759
760 }
761
762lookup_out:
763 kfree(full_path);
764 cifs_put_tlink(tlink);
765 free_xid(xid);
766 return ERR_PTR(rc);
767}
768
769static int
770cifs_d_revalidate(struct dentry *direntry, unsigned int flags)
771{
772 if (flags & LOOKUP_RCU)
773 return -ECHILD;
774
775 if (direntry->d_inode) {
776 if (cifs_revalidate_dentry(direntry))
777 return 0;
778 else {
779
780
781
782
783
784
785
786 if (IS_AUTOMOUNT(direntry->d_inode) &&
787 !(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) {
788 spin_lock(&direntry->d_lock);
789 direntry->d_flags |= DCACHE_NEED_AUTOMOUNT;
790 spin_unlock(&direntry->d_lock);
791 }
792
793 return 1;
794 }
795 }
796
797
798
799
800
801 if (!flags)
802 return 0;
803
804
805
806
807
808
809 if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
810 return 0;
811
812 if (time_after(jiffies, direntry->d_time + HZ) || !lookupCacheEnabled)
813 return 0;
814
815 return 1;
816}
817
818
819
820
821
822
823
824
825
826
827const struct dentry_operations cifs_dentry_ops = {
828 .d_revalidate = cifs_d_revalidate,
829 .d_automount = cifs_dfs_d_automount,
830
831};
832
833static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q)
834{
835 struct nls_table *codepage = CIFS_SB(dentry->d_sb)->local_nls;
836 unsigned long hash;
837 int i;
838
839 hash = init_name_hash();
840 for (i = 0; i < q->len; i++)
841 hash = partial_name_hash(nls_tolower(codepage, q->name[i]),
842 hash);
843 q->hash = end_name_hash(hash);
844
845 return 0;
846}
847
848static int cifs_ci_compare(const struct dentry *parent, const struct dentry *dentry,
849 unsigned int len, const char *str, const struct qstr *name)
850{
851 struct nls_table *codepage = CIFS_SB(parent->d_sb)->local_nls;
852
853 if ((name->len == len) &&
854 (nls_strnicmp(codepage, name->name, str, len) == 0))
855 return 0;
856 return 1;
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