1 /* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 jdolecek Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * John Heidemann of the UCLA Ficus project.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $
39 * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.44 2007/11/20 21:03:50 dillon Exp $
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
47 #include <sys/types.h>
49 #include <sys/vnode.h>
50 #include <sys/mount.h>
52 #include <sys/namei.h>
53 #include <sys/malloc.h>
55 #include <sys/dirent.h>
56 #include <machine/limits.h>
59 #include <vm/vm_param.h>
60 #if defined(__NetBSD__)
61 #include <vm/vm_prot.h>
63 #include <vm/vm_page.h>
64 #include <vm/vm_object.h>
65 #include <vm/vm_pager.h>
66 #if defined(__DragonFly__)
67 #include <vm/vnode_pager.h>
69 #include <vm/vm_extern.h>
71 #include <sys/sysctl.h>
73 /*#define NTFS_DEBUG 1*/
75 #include "ntfs_inode.h"
76 #include "ntfs_subr.h"
77 #if defined(__NetBSD__)
78 #include <miscfs/specfs/specdev.h>
79 #include <miscfs/genfs/genfs.h>
82 #include <sys/unistd.h> /* for pathconf(2) constants */
84 static int ntfs_read (struct vop_read_args
*);
85 static int ntfs_write (struct vop_write_args
*ap
);
86 static int ntfs_getattr (struct vop_getattr_args
*ap
);
87 static int ntfs_inactive (struct vop_inactive_args
*ap
);
88 static int ntfs_print (struct vop_print_args
*ap
);
89 static int ntfs_reclaim (struct vop_reclaim_args
*ap
);
90 static int ntfs_strategy (struct vop_strategy_args
*ap
);
91 static int ntfs_access (struct vop_access_args
*ap
);
92 static int ntfs_open (struct vop_open_args
*ap
);
93 static int ntfs_close (struct vop_close_args
*ap
);
94 static int ntfs_readdir (struct vop_readdir_args
*ap
);
95 static int ntfs_lookup (struct vop_old_lookup_args
*ap
);
96 static int ntfs_bmap (struct vop_bmap_args
*ap
);
97 #if defined(__DragonFly__)
98 static int ntfs_fsync (struct vop_fsync_args
*ap
);
100 static int ntfs_bypass (struct vop_generic_args
*);
102 static int ntfs_pathconf (struct vop_pathconf_args
*);
104 int ntfs_prtactive
= 1; /* 1 => print out reclaim of active vnodes */
107 * This is a noop, simply returning what one has been given.
109 * ntfs_bmap(struct vnode *a_vp, off_t a_loffset,
110 * daddr_t *a_doffsetp, int *a_runp, int *a_runb)
113 ntfs_bmap(struct vop_bmap_args
*ap
)
115 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap
->a_vp
,(u_int32_t
)ap
->a_bn
));
116 if (ap
->a_doffsetp
!= NULL
)
117 *ap
->a_doffsetp
= ap
->a_loffset
;
118 if (ap
->a_runp
!= NULL
)
120 #if !defined(__NetBSD__)
121 if (ap
->a_runb
!= NULL
)
128 * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
129 * struct ucred *a_cred)
132 ntfs_read(struct vop_read_args
*ap
)
134 struct vnode
*vp
= ap
->a_vp
;
135 struct fnode
*fp
= VTOF(vp
);
136 struct ntnode
*ip
= FTONT(fp
);
137 struct uio
*uio
= ap
->a_uio
;
138 struct ntfsmount
*ntmp
= ip
->i_mp
;
141 int resid
, off
, toread
;
144 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip
->i_number
,(u_int32_t
)uio
->uio_offset
,uio
->uio_resid
,uio
->uio_segflg
));
146 dprintf(("ntfs_read: filesize: %d",(u_int32_t
)fp
->f_size
));
148 /* don't allow reading after end of file */
149 if (uio
->uio_offset
> fp
->f_size
)
152 resid
= min(uio
->uio_resid
, fp
->f_size
- uio
->uio_offset
);
154 dprintf((", resid: %d\n", resid
));
158 cn
= ntfs_btocn(uio
->uio_offset
);
159 off
= ntfs_btocnoff(uio
->uio_offset
);
161 toread
= min(off
+ resid
, ntfs_cntob(1));
163 error
= bread(vp
, ntfs_cntodoff(cn
), ntfs_cntob(1), &bp
);
169 error
= uiomove(bp
->b_data
+ off
, toread
- off
, uio
);
176 resid
-= toread
- off
;
182 #if !defined(__DragonFly__)
188 ntfs_bypass(struct vop_generic_args
*ap
)
191 dprintf(("ntfs_bypass: %s\n", ap
->a_desc
->sd_name
));
198 * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
201 ntfs_getattr(struct vop_getattr_args
*ap
)
203 struct vnode
*vp
= ap
->a_vp
;
204 struct fnode
*fp
= VTOF(vp
);
205 struct ntnode
*ip
= FTONT(fp
);
206 struct vattr
*vap
= ap
->a_vap
;
208 dprintf(("ntfs_getattr: %d, flags: %d\n",ip
->i_number
,ip
->i_flag
));
210 #if defined(__DragonFly__)
211 vap
->va_fsid
= dev2udev(ip
->i_dev
);
213 vap
->va_fsid
= ip
->i_dev
;
215 vap
->va_fileid
= ip
->i_number
;
216 vap
->va_mode
= ip
->i_mp
->ntm_mode
;
217 vap
->va_nlink
= ip
->i_nlink
;
218 vap
->va_uid
= ip
->i_mp
->ntm_uid
;
219 vap
->va_gid
= ip
->i_mp
->ntm_gid
;
220 vap
->va_rmajor
= VNOVAL
;
221 vap
->va_rminor
= VNOVAL
;
222 vap
->va_size
= fp
->f_size
;
223 vap
->va_bytes
= fp
->f_allocated
;
224 vap
->va_atime
= ntfs_nttimetounix(fp
->f_times
.t_access
);
225 vap
->va_mtime
= ntfs_nttimetounix(fp
->f_times
.t_write
);
226 vap
->va_ctime
= ntfs_nttimetounix(fp
->f_times
.t_create
);
227 vap
->va_flags
= ip
->i_flag
;
229 vap
->va_blocksize
= ip
->i_mp
->ntm_spc
* ip
->i_mp
->ntm_bps
;
230 vap
->va_type
= vp
->v_type
;
237 * Last reference to an ntnode. If necessary, write or delete it.
239 * ntfs_inactive(struct vnode *a_vp)
242 ntfs_inactive(struct vop_inactive_args
*ap
)
244 struct vnode
*vp
= ap
->a_vp
;
246 struct ntnode
*ip
= VTONT(vp
);
249 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp
, ip
->i_number
));
251 if (ntfs_prtactive
&& vp
->v_sysref
.refcnt
> 1)
252 vprint("ntfs_inactive: pushing active", vp
);
255 * XXX since we don't support any filesystem changes
256 * right now, nothing more needs to be done
262 * Reclaim an fnode/ntnode so that it can be used for other purposes.
264 * ntfs_reclaim(struct vnode *a_vp)
267 ntfs_reclaim(struct vop_reclaim_args
*ap
)
269 struct vnode
*vp
= ap
->a_vp
;
270 struct fnode
*fp
= VTOF(vp
);
271 struct ntnode
*ip
= FTONT(fp
);
274 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp
, ip
->i_number
));
276 if (ntfs_prtactive
&& vp
->v_sysref
.refcnt
> 1)
277 vprint("ntfs_reclaim: pushing active", vp
);
279 if ((error
= ntfs_ntget(ip
)) != 0)
290 * ntfs_print(struct vnode *a_vp)
293 ntfs_print(struct vop_print_args
*ap
)
299 * Calculate the logical to physical mapping if not done already,
300 * then call the device strategy routine.
302 * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio)
305 ntfs_strategy(struct vop_strategy_args
*ap
)
307 struct bio
*bio
= ap
->a_bio
;
308 struct buf
*bp
= bio
->bio_buf
;
309 struct vnode
*vp
= ap
->a_vp
;
310 struct fnode
*fp
= VTOF(vp
);
311 struct ntnode
*ip
= FTONT(fp
);
312 struct ntfsmount
*ntmp
= ip
->i_mp
;
318 dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n",
319 bp
->b_loffset
, bio
->bio_offset
));
321 dprintf(("strategy: bcount: %d flags: 0x%lx\n",
322 (u_int32_t
)bp
->b_bcount
,bp
->b_flags
));
328 if (bio
->bio_offset
>= fp
->f_size
) {
332 toread
= min(bp
->b_bcount
,
333 fp
->f_size
- bio
->bio_offset
);
334 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
335 toread
,(u_int32_t
)fp
->f_size
));
337 error
= ntfs_readattr(ntmp
, ip
, fp
->f_attrtype
,
338 fp
->f_attrname
, bio
->bio_offset
,
339 toread
, bp
->b_data
, NULL
);
342 kprintf("ntfs_strategy: ntfs_readattr failed\n");
344 bp
->b_flags
|= B_ERROR
;
347 bzero(bp
->b_data
+ toread
, bp
->b_bcount
- toread
);
351 if (bio
->bio_offset
+ bp
->b_bcount
>= fp
->f_size
) {
352 kprintf("ntfs_strategy: CAN'T EXTEND FILE\n");
353 bp
->b_error
= error
= EFBIG
;
354 bp
->b_flags
|= B_ERROR
;
356 towrite
= min(bp
->b_bcount
,
357 fp
->f_size
- bio
->bio_offset
);
358 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
359 towrite
,(u_int32_t
)fp
->f_size
));
361 error
= ntfs_writeattr_plain(ntmp
, ip
, fp
->f_attrtype
,
362 fp
->f_attrname
, bio
->bio_offset
,towrite
,
363 bp
->b_data
, &tmp
, NULL
);
366 kprintf("ntfs_strategy: ntfs_writeattr fail\n");
368 bp
->b_flags
|= B_ERROR
;
373 panic("ntfs: bad b_cmd %d\n", bp
->b_cmd
);
380 * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
381 * struct ucred *a_cred)
384 ntfs_write(struct vop_write_args
*ap
)
386 struct vnode
*vp
= ap
->a_vp
;
387 struct fnode
*fp
= VTOF(vp
);
388 struct ntnode
*ip
= FTONT(fp
);
389 struct uio
*uio
= ap
->a_uio
;
390 struct ntfsmount
*ntmp
= ip
->i_mp
;
395 dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip
->i_number
,(u_int32_t
)uio
->uio_offset
,uio
->uio_resid
,uio
->uio_segflg
));
396 dprintf(("ntfs_write: filesize: %d",(u_int32_t
)fp
->f_size
));
398 if (uio
->uio_resid
+ uio
->uio_offset
> fp
->f_size
) {
399 kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
403 towrite
= min(uio
->uio_resid
, fp
->f_size
- uio
->uio_offset
);
405 dprintf((", towrite: %d\n",(u_int32_t
)towrite
));
407 error
= ntfs_writeattr_plain(ntmp
, ip
, fp
->f_attrtype
,
408 fp
->f_attrname
, uio
->uio_offset
, towrite
, NULL
, &written
, uio
);
411 kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error
);
418 * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
421 ntfs_access(struct vop_access_args
*ap
)
423 struct vnode
*vp
= ap
->a_vp
;
424 struct ntnode
*ip
= VTONT(vp
);
425 struct ucred
*cred
= ap
->a_cred
;
426 mode_t mask
, mode
= ap
->a_mode
;
433 dprintf(("ntfs_access: %d\n",ip
->i_number
));
436 * Disallow write attempts on read-only file systems;
437 * unless the file is a socket, fifo, or a block or
438 * character device resident on the file system.
441 switch ((int)vp
->v_type
) {
445 if (vp
->v_mount
->mnt_flag
& MNT_RDONLY
)
448 if (error
= getinoquota(ip
))
455 /* Otherwise, user id 0 always gets access. */
456 if (cred
->cr_uid
== 0)
461 /* Otherwise, check the owner. */
462 if (cred
->cr_uid
== ip
->i_mp
->ntm_uid
) {
469 return ((ip
->i_mp
->ntm_mode
& mask
) == mask
? 0 : EACCES
);
472 /* Otherwise, check the groups. */
473 for (i
= 0, gp
= cred
->cr_groups
; i
< cred
->cr_ngroups
; i
++, gp
++)
474 if (ip
->i_mp
->ntm_gid
== *gp
) {
481 return ((ip
->i_mp
->ntm_mode
&mask
) == mask
? 0 : EACCES
);
484 /* Otherwise, check everyone else. */
491 return ((ip
->i_mp
->ntm_mode
& mask
) == mask
? 0 : EACCES
);
499 * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
504 ntfs_open(struct vop_open_args
*ap
)
506 return (vop_stdopen(ap
));
512 * Update the times on the inode.
514 * ntfs_close(struct vnode *a_vp, int a_fflag)
518 ntfs_close(struct vop_close_args
*ap
)
521 struct vnode
*vp
= ap
->a_vp
;
522 struct ntnode
*ip
= VTONT(vp
);
524 kprintf("ntfs_close: %d\n",ip
->i_number
);
527 return (vop_stdclose(ap
));
531 * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
532 * int *a_ncookies, off_t **cookies)
535 ntfs_readdir(struct vop_readdir_args
*ap
)
537 struct vnode
*vp
= ap
->a_vp
;
538 struct fnode
*fp
= VTOF(vp
);
539 struct ntnode
*ip
= FTONT(fp
);
540 struct uio
*uio
= ap
->a_uio
;
541 struct ntfsmount
*ntmp
= ip
->i_mp
;
543 u_int32_t faked
= 0, num
, off
;
545 char convname
[NTFS_MAXFILENAME
+ 1];
547 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip
->i_number
,(u_int32_t
)uio
->uio_offset
,uio
->uio_resid
));
549 if (uio
->uio_offset
< 0 || uio
->uio_offset
> INT_MAX
)
551 if ((error
= vn_lock(vp
, LK_EXCLUSIVE
| LK_RETRY
)) != 0)
555 * uio->uio_offset carries the number of the entry
556 * where we should start returning dirents.
558 * We fake up "." if we're not reading the FS root
559 * and we always fake up "..".
561 * off contains the entry we are starting at,
562 * num increments while we are reading.
565 off
= num
= uio
->uio_offset
;
566 faked
= (ip
->i_number
== NTFS_ROOTINO
) ? 1 : 2;
568 /* Simulate . in every dir except ROOT */
569 if (ip
->i_number
!= NTFS_ROOTINO
&& num
== 0) {
570 if (vop_write_dirent(&error
, uio
, ip
->i_number
,
580 /* Simulate .. in every dir including ROOT */
581 if (num
== faked
- 1) {
582 /* XXX NTFS_ROOTINO seems to be wrong here */
583 if (vop_write_dirent(&error
, uio
, NTFS_ROOTINO
,
594 struct attr_indexentry
*iep
;
597 * num is the number of the entry we will return,
598 * but ntfs_ntreaddir takes the entry number of the
599 * ntfs directory listing, so subtract the faked
602 error
= ntfs_ntreaddir(ntmp
, fp
, num
- faked
, &iep
);
610 for (; !(iep
->ie_flag
& NTFS_IEFLAG_LAST
);
611 iep
= NTFS_NEXTREC(iep
, struct attr_indexentry
*))
613 if(!ntfs_isnamepermitted(ntmp
,iep
))
616 for (i
=0; i
< iep
->ie_fnamelen
; i
++)
617 convname
[i
] = NTFS_U28(iep
->ie_fname
[i
]);
620 if (vop_write_dirent(&error
, uio
, iep
->ie_number
,
621 (iep
->ie_fflag
& NTFS_FFLAG_DIR
) ? DT_DIR
: DT_REG
,
622 iep
->ie_fnamelen
, convname
))
625 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, "
627 ncookies
, convname
, iep
->ie_fnametype
,
629 (iep
->ie_fflag
& NTFS_FFLAG_DIR
) ?
641 uio
->uio_offset
= num
;
643 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
644 ncookies
,(u_int
)(uio
->uio_offset
- off
)));
645 dprintf(("ntfs_readdir: off: %d resid: %d\n",
646 (u_int32_t
)uio
->uio_offset
,uio
->uio_resid
));
648 if (!error
&& ap
->a_ncookies
!= NULL
) {
652 ddprintf(("ntfs_readdir: %d cookies\n",ncookies
));
653 if (uio
->uio_segflg
!= UIO_SYSSPACE
|| uio
->uio_iovcnt
!= 1)
654 panic("ntfs_readdir: unexpected uio from NFS server");
655 MALLOC(cookies
, off_t
*, ncookies
* sizeof(off_t
),
661 *ap
->a_ncookies
= ncookies
;
662 *ap
->a_cookies
= cookies
;
666 *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset;
674 * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
675 * struct componentname *a_cnp)
678 ntfs_lookup(struct vop_old_lookup_args
*ap
)
680 struct vnode
*dvp
= ap
->a_dvp
;
681 struct ntnode
*dip
= VTONT(dvp
);
682 struct ntfsmount
*ntmp
= dip
->i_mp
;
683 struct componentname
*cnp
= ap
->a_cnp
;
685 int lockparent
= cnp
->cn_flags
& CNP_LOCKPARENT
;
687 int wantparent
= cnp
->cn_flags
& (CNP_LOCKPARENT
| CNP_WANTPARENT
);
689 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
690 (int)cnp
->cn_namelen
, cnp
->cn_nameptr
, cnp
->cn_namelen
,
691 dip
->i_number
, lockparent
, wantparent
));
695 if (cnp
->cn_namelen
== 1 && cnp
->cn_nameptr
[0] == '.') {
696 dprintf(("ntfs_lookup: faking . directory in %d\n",
702 } else if (cnp
->cn_flags
& CNP_ISDOTDOT
) {
705 dprintf(("ntfs_lookup: faking .. directory in %d\n",
708 error
= ntfs_ntvattrget(ntmp
, dip
, NTFS_A_NAME
, NULL
, 0, &vap
);
713 cnp
->cn_flags
|= CNP_PDIRUNLOCK
;
715 dprintf(("ntfs_lookup: parentdir: %d\n",
716 vap
->va_a_name
->n_pnumber
));
717 error
= VFS_VGET(ntmp
->ntm_mountp
,
718 vap
->va_a_name
->n_pnumber
,ap
->a_vpp
);
719 ntfs_ntvattrrele(vap
);
721 if (VN_LOCK(dvp
, LK_EXCLUSIVE
| LK_RETRY
) == 0)
722 cnp
->cn_flags
&= ~CNP_PDIRUNLOCK
;
727 error
= VN_LOCK(dvp
, LK_EXCLUSIVE
);
733 cnp
->cn_flags
&= ~CNP_PDIRUNLOCK
;
736 error
= ntfs_ntlookupfile(ntmp
, dvp
, cnp
, ap
->a_vpp
);
738 dprintf(("ntfs_ntlookupfile: returned %d\n", error
));
742 dprintf(("ntfs_lookup: found ino: %d\n",
743 VTONT(*ap
->a_vpp
)->i_number
));
751 #if defined(__DragonFly__)
753 * Flush the blocks of a file to disk.
755 * This function is worthless for vnodes that represent directories. Maybe we
756 * could just do a sync if they try an fsync on a directory file.
758 * ntfs_fsync(struct vnode *a_vp, int a_waitfor)
761 ntfs_fsync(struct vop_fsync_args
*ap
)
768 * Return POSIX pathconf information applicable to NTFS filesystem
771 ntfs_pathconf(struct vop_pathconf_args
*ap
)
773 switch (ap
->a_name
) {
778 *ap
->a_retval
= NTFS_MAXFILENAME
;
781 *ap
->a_retval
= PATH_MAX
;
783 case _PC_CHOWN_RESTRICTED
:
789 #if defined(__NetBSD__)
793 case _PC_FILESIZEBITS
:
804 * Global vfs data structures
806 struct vop_ops ntfs_vnode_vops
= {
807 .vop_default
= vop_defaultop
,
808 .vop_getattr
= ntfs_getattr
,
809 .vop_inactive
= ntfs_inactive
,
810 .vop_reclaim
= ntfs_reclaim
,
811 .vop_print
= ntfs_print
,
812 .vop_pathconf
= ntfs_pathconf
,
813 .vop_old_lookup
= ntfs_lookup
,
814 .vop_access
= ntfs_access
,
815 .vop_close
= ntfs_close
,
816 .vop_open
= ntfs_open
,
817 .vop_readdir
= ntfs_readdir
,
818 .vop_fsync
= ntfs_fsync
,
819 .vop_bmap
= ntfs_bmap
,
820 .vop_getpages
= vop_stdgetpages
,
821 .vop_putpages
= vop_stdputpages
,
822 .vop_strategy
= ntfs_strategy
,
823 .vop_read
= ntfs_read
,
824 .vop_write
= ntfs_write