xref: /dragonfly/sys/vfs/ntfs/ntfs_vfsops.c (revision 9bb2a92d) 
1 /*	$NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 1999 Semen Ustimenko
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD: src/sys/ntfs/ntfs_vfsops.c,v 1.20.2.5 2001/12/25 01:44:45 dillon Exp $
29  * $DragonFly: src/sys/vfs/ntfs/ntfs_vfsops.c,v 1.13 2004/03/01 06:33:22 dillon Exp $
30  */
31 
32 
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/conf.h>
36 #include <sys/proc.h>
37 #include <sys/namei.h>
38 #include <sys/kernel.h>
39 #include <sys/vnode.h>
40 #include <sys/mount.h>
41 #include <sys/buf.h>
42 #include <sys/fcntl.h>
43 #include <sys/malloc.h>
44 #include <sys/systm.h>
45 #if defined(__NetBSD__)
46 #include <sys/device.h>
47 #endif
48 
49 #include <vm/vm.h>
50 #include <vm/vm_param.h>
51 #if defined(__NetBSD__)
52 #include <vm/vm_prot.h>
53 #endif
54 #include <vm/vm_page.h>
55 #include <vm/vm_object.h>
56 #include <vm/vm_extern.h>
57 #include <vm/vm_zone.h>
58 
59 #if defined(__NetBSD__)
60 #include <miscfs/specfs/specdev.h>
61 #endif
62 
63 /*#define NTFS_DEBUG 1*/
64 #include "ntfs.h"
65 #include "ntfs_inode.h"
66 #include "ntfs_subr.h"
67 #include "ntfs_vfsops.h"
68 #include "ntfs_ihash.h"
69 #include "ntfsmount.h"
70 
71 #if defined(__DragonFly__)
72 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
73 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode",  "NTFS ntnode information");
74 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode",  "NTFS fnode information");
75 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir",  "NTFS dir buffer");
76 #endif
77 
78 static int	ntfs_root (struct mount *, struct vnode **);
79 static int	ntfs_statfs (struct mount *, struct statfs *,
80 				 struct thread *);
81 static int	ntfs_unmount (struct mount *, int, struct thread *);
82 static int	ntfs_vget (struct mount *mp, ino_t ino,
83 			       struct vnode **vpp);
84 static int	ntfs_mountfs (struct vnode *, struct mount *,
85 				  struct ntfs_args *, struct thread *);
86 static int	ntfs_vptofh (struct vnode *, struct fid *);
87 static int	ntfs_fhtovp (struct mount *, struct fid *,
88 				 struct vnode **);
89 
90 #if !defined (__DragonFly__)
91 static int	ntfs_quotactl (struct mount *, int, uid_t, caddr_t,
92 				   struct thread *);
93 static int	ntfs_start (struct mount *, int, struct thread *);
94 static int	ntfs_sync (struct mount *, int, struct ucred *,
95 			       struct thread *);
96 #endif
97 
98 #if defined(__DragonFly__)
99 struct sockaddr;
100 static int	ntfs_mount (struct mount *, char *, caddr_t,
101 				struct nameidata *, struct thread *);
102 static int	ntfs_init (struct vfsconf *);
103 static int	ntfs_checkexp (struct mount *, struct sockaddr *,
104 				   int *, struct ucred **);
105 #elif defined(__NetBSD__)
106 static int	ntfs_mount (struct mount *, const char *, void *,
107 				struct nameidata *, struct thread *);
108 static void	ntfs_init (void);
109 static int	ntfs_mountroot (void);
110 static int	ntfs_sysctl (int *, u_int, void *, size_t *, void *,
111 				 size_t, struct thread *);
112 static int	ntfs_checkexp (struct mount *, struct mbuf *,
113 				   int *, struct ucred **);
114 #endif
115 
116 /*
117  * Verify a remote client has export rights and return these rights via.
118  * exflagsp and credanonp.
119  */
120 static int
121 ntfs_checkexp(mp, nam, exflagsp, credanonp)
122 #if defined(__DragonFly__)
123 	struct mount *mp;
124 	struct sockaddr *nam;
125 	int *exflagsp;
126 	struct ucred **credanonp;
127 #else /* defined(__NetBSD__) */
128 	struct mount *mp;
129 	struct mbuf *nam;
130 	int *exflagsp;
131 	struct ucred **credanonp;
132 #endif
133 {
134 	struct netcred *np;
135 	struct ntfsmount *ntm = VFSTONTFS(mp);
136 
137 	/*
138 	 * Get the export permission structure for this <mp, client> tuple.
139 	 */
140 	np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
141 	if (np == NULL)
142 		return (EACCES);
143 
144 	*exflagsp = np->netc_exflags;
145 	*credanonp = &np->netc_anon;
146 	return (0);
147 }
148 
149 #if defined(__NetBSD__)
150 /*ARGSUSED*/
151 static int
152 ntfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, td)
153 	int *name;
154 	u_int namelen;
155 	void *oldp;
156 	size_t *oldlenp;
157 	void *newp;
158 	size_t newlen;
159 	struct thread *td;
160 {
161 	return (EINVAL);
162 }
163 
164 static int
165 ntfs_mountroot()
166 {
167 	struct mount *mp;
168 	extern struct vnode *rootvp;
169 	struct thread *td = curthread;	/* XXX */
170 	struct ntfs_args args;
171 	lwkt_tokref ilock;
172 	int error;
173 
174 	if (root_device->dv_class != DV_DISK)
175 		return (ENODEV);
176 
177 	/*
178 	 * Get vnodes for rootdev.
179 	 */
180 	if (bdevvp(rootdev, &rootvp))
181 		panic("ntfs_mountroot: can't setup rootvp");
182 
183 	if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
184 		vrele(rootvp);
185 		return (error);
186 	}
187 
188 	args.flag = 0;
189 	args.uid = 0;
190 	args.gid = 0;
191 	args.mode = 0777;
192 
193 	if ((error = ntfs_mountfs(rootvp, mp, &args, td)) != 0) {
194 		mp->mnt_op->vfs_refcount--;
195 		vfs_unbusy(mp);
196 		free(mp, M_MOUNT);
197 		vrele(rootvp);
198 		return (error);
199 	}
200 
201 	lwkt_gettoken(&ilock, &mountlist_token);
202 	CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
203 	lwkt_reltoken(&ilock);
204 	(void)ntfs_statfs(mp, &mp->mnt_stat, td);
205 	vfs_unbusy(mp);
206 	return (0);
207 }
208 
209 static void
210 ntfs_init ()
211 {
212 	ntfs_nthashinit();
213 	ntfs_toupper_init();
214 }
215 
216 #elif defined(__DragonFly__)
217 
218 static int
219 ntfs_init (
220 	struct vfsconf *vcp )
221 {
222 	ntfs_nthashinit();
223 	ntfs_toupper_init();
224 	return 0;
225 }
226 
227 #endif /* NetBSD */
228 
229 static int
230 ntfs_mount (
231 	struct mount *mp,
232 #if defined(__DragonFly__)
233 	char *path,
234 	caddr_t data,
235 #else
236 	const char *path,
237 	void *data,
238 #endif
239 	struct nameidata *ndp,
240 	struct thread *td
241 ) {
242 	size_t		size;
243 	int		err = 0;
244 	struct vnode	*devvp;
245 	struct ntfs_args args;
246 
247 #ifdef __DragonFly__
248 	/*
249 	 * Use NULL path to flag a root mount
250 	 */
251 	if( path == NULL) {
252 		/*
253 		 ***
254 		 * Mounting root file system
255 		 ***
256 		 */
257 
258 		/* Get vnode for root device*/
259 		if( bdevvp( rootdev, &rootvp))
260 			panic("ffs_mountroot: can't setup bdevvp for root");
261 
262 		/*
263 		 * FS specific handling
264 		 */
265 		mp->mnt_flag |= MNT_RDONLY;	/* XXX globally applicable?*/
266 
267 		/*
268 		 * Attempt mount
269 		 */
270 		if( ( err = ntfs_mountfs(rootvp, mp, &args, td)) != 0) {
271 			/* fs specific cleanup (if any)*/
272 			goto error_1;
273 		}
274 
275 		goto dostatfs;		/* success*/
276 
277 	}
278 #endif /* FreeBSD */
279 
280 	/*
281 	 ***
282 	 * Mounting non-root file system or updating a file system
283 	 ***
284 	 */
285 
286 	/* copy in user arguments*/
287 	err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
288 	if (err)
289 		goto error_1;		/* can't get arguments*/
290 
291 	/*
292 	 * If updating, check whether changing from read-only to
293 	 * read/write; if there is no device name, that's all we do.
294 	 */
295 	if (mp->mnt_flag & MNT_UPDATE) {
296 		/* if not updating name...*/
297 		if (args.fspec == 0) {
298 			/*
299 			 * Process export requests.  Jumping to "success"
300 			 * will return the vfs_export() error code.
301 			 */
302 			struct ntfsmount *ntm = VFSTONTFS(mp);
303 			err = vfs_export(mp, &ntm->ntm_export, &args.export);
304 			goto success;
305 		}
306 
307 		printf("ntfs_mount(): MNT_UPDATE not supported\n");
308 		err = EINVAL;
309 		goto error_1;
310 	}
311 
312 	/*
313 	 * Not an update, or updating the name: look up the name
314 	 * and verify that it refers to a sensible block device.
315 	 */
316 	NDINIT(ndp, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args.fspec, td);
317 	err = namei(ndp);
318 	if (err) {
319 		/* can't get devvp!*/
320 		goto error_1;
321 	}
322 	NDFREE(ndp, NDF_ONLY_PNBUF);
323 	devvp = ndp->ni_vp;
324 
325 #if defined(__DragonFly__)
326 	if (!vn_isdisk(devvp, &err))
327 		goto error_2;
328 #else
329 	if (devvp->v_type != VBLK) {
330 		err = ENOTBLK;
331 		goto error_2;
332 	}
333 	if (major(devvp->v_rdev) >= nblkdev) {
334 		err = ENXIO;
335 		goto error_2;
336 	}
337 #endif
338 	if (mp->mnt_flag & MNT_UPDATE) {
339 #if 0
340 		/*
341 		 ********************
342 		 * UPDATE
343 		 ********************
344 		 */
345 
346 		if (devvp != ntmp->um_devvp)
347 			err = EINVAL;	/* needs translation */
348 		else
349 			vrele(devvp);
350 		/*
351 		 * Update device name only on success
352 		 */
353 		if( !err) {
354 			/* Save "mounted from" info for mount point (NULL pad)*/
355 			copyinstr(	args.fspec,
356 					mp->mnt_stat.f_mntfromname,
357 					MNAMELEN - 1,
358 					&size);
359 			bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
360 		}
361 #endif
362 	} else {
363 		/*
364 		 ********************
365 		 * NEW MOUNT
366 		 ********************
367 		 */
368 
369 		/*
370 		 * Since this is a new mount, we want the names for
371 		 * the device and the mount point copied in.  If an
372 		 * error occurs,  the mountpoint is discarded by the
373 		 * upper level code.
374 		 */
375 		/* Save "last mounted on" info for mount point (NULL pad)*/
376 		copyinstr(	path,				/* mount point*/
377 				mp->mnt_stat.f_mntonname,	/* save area*/
378 				MNAMELEN - 1,			/* max size*/
379 				&size);				/* real size*/
380 		bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
381 
382 		/* Save "mounted from" info for mount point (NULL pad)*/
383 		copyinstr(	args.fspec,			/* device name*/
384 				mp->mnt_stat.f_mntfromname,	/* save area*/
385 				MNAMELEN - 1,			/* max size*/
386 				&size);				/* real size*/
387 		bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
388 
389 		err = ntfs_mountfs(devvp, mp, &args, td);
390 	}
391 	if (err) {
392 		goto error_2;
393 	}
394 
395 #ifdef __DragonFly__
396 dostatfs:
397 #endif
398 	/*
399 	 * Initialize FS stat information in mount struct; uses both
400 	 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
401 	 *
402 	 * This code is common to root and non-root mounts
403 	 */
404 	(void)VFS_STATFS(mp, &mp->mnt_stat, td);
405 
406 	goto success;
407 
408 
409 error_2:	/* error with devvp held*/
410 
411 	/* release devvp before failing*/
412 	vrele(devvp);
413 
414 error_1:	/* no state to back out*/
415 
416 success:
417 	return(err);
418 }
419 
420 /*
421  * Common code for mount and mountroot
422  */
423 int
424 ntfs_mountfs(devvp, mp, argsp, td)
425 	struct vnode *devvp;
426 	struct mount *mp;
427 	struct ntfs_args *argsp;
428 	struct thread *td;
429 {
430 	struct buf *bp;
431 	struct ntfsmount *ntmp;
432 	dev_t dev = devvp->v_rdev;
433 	int error, ronly, ncount, i;
434 	struct vnode *vp;
435 	struct ucred *cred;
436 
437 	KKASSERT(td->td_proc);
438 	cred = td->td_proc->p_ucred;
439 
440 	/*
441 	 * Disallow multiple mounts of the same device.
442 	 * Disallow mounting of a device that is currently in use
443 	 * (except for root, which might share swap device for miniroot).
444 	 * Flush out any old buffers remaining from a previous use.
445 	 */
446 	error = vfs_mountedon(devvp);
447 	if (error)
448 		return (error);
449 	ncount = vcount(devvp);
450 #if defined(__DragonFly__)
451 	if (devvp->v_object)
452 		ncount -= 1;
453 #endif
454 	if (ncount > 1 && devvp != rootvp)
455 		return (EBUSY);
456 #if defined(__DragonFly__)
457 	VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
458 	error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
459 	VOP__UNLOCK(devvp, 0, td);
460 #else
461 	error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
462 #endif
463 	if (error)
464 		return (error);
465 
466 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
467 	VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
468 	error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, td);
469 	VOP__UNLOCK(devvp, 0, td);
470 	if (error)
471 		return (error);
472 
473 	bp = NULL;
474 
475 	error = bread(devvp, BBLOCK, BBSIZE, &bp);
476 	if (error)
477 		goto out;
478 	ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK );
479 	bzero( ntmp, sizeof *ntmp );
480 	bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
481 	brelse( bp );
482 	bp = NULL;
483 
484 	if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
485 		error = EINVAL;
486 		dprintf(("ntfs_mountfs: invalid boot block\n"));
487 		goto out;
488 	}
489 
490 	{
491 		int8_t cpr = ntmp->ntm_mftrecsz;
492 		if( cpr > 0 )
493 			ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
494 		else
495 			ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
496 	}
497 	dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
498 		ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
499 		ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
500 	dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
501 		(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
502 
503 	ntmp->ntm_mountp = mp;
504 	ntmp->ntm_dev = dev;
505 	ntmp->ntm_devvp = devvp;
506 	ntmp->ntm_uid = argsp->uid;
507 	ntmp->ntm_gid = argsp->gid;
508 	ntmp->ntm_mode = argsp->mode;
509 	ntmp->ntm_flag = argsp->flag;
510 
511 	/* Copy in the 8-bit to Unicode conversion table */
512 	if (argsp->flag & NTFSMNT_U2WTABLE) {
513 		ntfs_82u_init(ntmp, argsp->u2w);
514 	} else {
515 		ntfs_82u_init(ntmp, NULL);
516 	}
517 
518 	/* Initialize Unicode to 8-bit table from 8toU table */
519 	ntfs_u28_init(ntmp, ntmp->ntm_82u);
520 
521 	mp->mnt_data = (qaddr_t)ntmp;
522 
523 	dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
524 		(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
525 		(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
526 		ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
527 
528 	/*
529 	 * We read in some system nodes to do not allow
530 	 * reclaim them and to have everytime access to them.
531 	 */
532 	{
533 		int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
534 		for (i=0; i<3; i++) {
535 			error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
536 			if(error)
537 				goto out1;
538 			ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
539 			VREF(ntmp->ntm_sysvn[pi[i]]);
540 			vput(ntmp->ntm_sysvn[pi[i]]);
541 		}
542 	}
543 
544 	/* read the Unicode lowercase --> uppercase translation table,
545 	 * if necessary */
546 	if ((error = ntfs_toupper_use(mp, ntmp)))
547 		goto out1;
548 
549 	/*
550 	 * Scan $BitMap and count free clusters
551 	 */
552 	error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
553 	if(error)
554 		goto out1;
555 
556 	/*
557 	 * Read and translate to internal format attribute
558 	 * definition file.
559 	 */
560 	{
561 		int num,j;
562 		struct attrdef ad;
563 
564 		/* Open $AttrDef */
565 		error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
566 		if(error)
567 			goto out1;
568 
569 		/* Count valid entries */
570 		for(num=0;;num++) {
571 			error = ntfs_readattr(ntmp, VTONT(vp),
572 					NTFS_A_DATA, NULL,
573 					num * sizeof(ad), sizeof(ad),
574 					&ad, NULL);
575 			if (error)
576 				goto out1;
577 			if (ad.ad_name[0] == 0)
578 				break;
579 		}
580 
581 		/* Alloc memory for attribute definitions */
582 		MALLOC(ntmp->ntm_ad, struct ntvattrdef *,
583 			num * sizeof(struct ntvattrdef),
584 			M_NTFSMNT, M_WAITOK);
585 
586 		ntmp->ntm_adnum = num;
587 
588 		/* Read them and translate */
589 		for(i=0;i<num;i++){
590 			error = ntfs_readattr(ntmp, VTONT(vp),
591 					NTFS_A_DATA, NULL,
592 					i * sizeof(ad), sizeof(ad),
593 					&ad, NULL);
594 			if (error)
595 				goto out1;
596 			j = 0;
597 			do {
598 				ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
599 			} while(ad.ad_name[j++]);
600 			ntmp->ntm_ad[i].ad_namelen = j - 1;
601 			ntmp->ntm_ad[i].ad_type = ad.ad_type;
602 		}
603 
604 		vput(vp);
605 	}
606 
607 #if defined(__DragonFly__)
608 	mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
609 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
610 #else
611 	mp->mnt_stat.f_fsid.val[0] = dev;
612 	mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_NTFS);
613 #endif
614 	mp->mnt_maxsymlinklen = 0;
615 	mp->mnt_flag |= MNT_LOCAL;
616 	devvp->v_specmountpoint = mp;
617 	return (0);
618 
619 out1:
620 	for(i=0;i<NTFS_SYSNODESNUM;i++)
621 		if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
622 
623 	if (vflush(mp, 0, 0))
624 		dprintf(("ntfs_mountfs: vflush failed\n"));
625 
626 out:
627 	devvp->v_specmountpoint = NULL;
628 	if (bp)
629 		brelse(bp);
630 
631 #if defined __NetBSD__
632 	/* lock the device vnode before calling VOP_CLOSE() */
633 	VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
634 	(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, td);
635 	VOP__UNLOCK(devvp, 0, td);
636 #else
637 	(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, td);
638 #endif
639 
640 	return (error);
641 }
642 
643 #if !defined(__DragonFly__)
644 static int
645 ntfs_start (
646 	struct mount *mp,
647 	int flags,
648 	struct thread *td)
649 {
650 	return (0);
651 }
652 #endif
653 
654 static int
655 ntfs_unmount(
656 	struct mount *mp,
657 	int mntflags,
658 	struct thread *td)
659 {
660 	struct ntfsmount *ntmp;
661 	int error, ronly = 0, flags, i;
662 
663 	dprintf(("ntfs_unmount: unmounting...\n"));
664 	ntmp = VFSTONTFS(mp);
665 
666 	flags = 0;
667 	if(mntflags & MNT_FORCE)
668 		flags |= FORCECLOSE;
669 
670 	dprintf(("ntfs_unmount: vflushing...\n"));
671 	error = vflush(mp, 0, flags | SKIPSYSTEM);
672 	if (error) {
673 		printf("ntfs_unmount: vflush failed: %d\n",error);
674 		return (error);
675 	}
676 
677 	/* Check if only system vnodes are rest */
678 	for(i=0;i<NTFS_SYSNODESNUM;i++)
679 		 if((ntmp->ntm_sysvn[i]) &&
680 		    (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY);
681 
682 	/* Dereference all system vnodes */
683 	for(i=0;i<NTFS_SYSNODESNUM;i++)
684 		 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
685 
686 	/* vflush system vnodes */
687 	error = vflush(mp, 0, flags);
688 	if (error)
689 		printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
690 
691 	/* Check if the type of device node isn't VBAD before
692 	 * touching v_specinfo.  If the device vnode is revoked, the
693 	 * field is NULL and touching it causes null pointer derefercence.
694 	 */
695 	if (ntmp->ntm_devvp->v_type != VBAD)
696 		ntmp->ntm_devvp->v_specmountpoint = NULL;
697 
698 	vinvalbuf(ntmp->ntm_devvp, V_SAVE, td, 0, 0);
699 
700 #if defined(__NetBSD__)
701 	/* lock the device vnode before calling VOP_CLOSE() */
702 	VOP_LOCK(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
703 	error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, td);
704 	VOP__UNLOCK(ntmp->ntm_devvp, 0, td);
705 #else
706 	error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE, td);
707 #endif
708 
709 	vrele(ntmp->ntm_devvp);
710 
711 	/* free the toupper table, if this has been last mounted ntfs volume */
712 	ntfs_toupper_unuse();
713 
714 	dprintf(("ntfs_umount: freeing memory...\n"));
715 	ntfs_u28_uninit(ntmp);
716 	ntfs_82u_uninit(ntmp);
717 	mp->mnt_data = (qaddr_t)0;
718 	mp->mnt_flag &= ~MNT_LOCAL;
719 	FREE(ntmp->ntm_ad, M_NTFSMNT);
720 	FREE(ntmp, M_NTFSMNT);
721 	return (error);
722 }
723 
724 static int
725 ntfs_root(
726 	struct mount *mp,
727 	struct vnode **vpp )
728 {
729 	struct vnode *nvp;
730 	int error = 0;
731 
732 	dprintf(("ntfs_root(): sysvn: %p\n",
733 		VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
734 	error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
735 	if(error) {
736 		printf("ntfs_root: VFS_VGET failed: %d\n",error);
737 		return (error);
738 	}
739 
740 	*vpp = nvp;
741 	return (0);
742 }
743 
744 #if !defined(__DragonFly__)
745 static int
746 ntfs_quotactl (
747 	struct mount *mp,
748 	int cmds,
749 	uid_t uid,
750 	caddr_t arg,
751 	struct thread *td)
752 {
753 	printf("\nntfs_quotactl():\n");
754 	return EOPNOTSUPP;
755 }
756 #endif
757 
758 int
759 ntfs_calccfree(
760 	struct ntfsmount *ntmp,
761 	cn_t *cfreep)
762 {
763 	struct vnode *vp;
764 	u_int8_t *tmp;
765 	int j, error;
766 	long cfree = 0;
767 	size_t bmsize, i;
768 
769 	vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
770 
771 	bmsize = VTOF(vp)->f_size;
772 
773 	MALLOC(tmp, u_int8_t *, bmsize, M_TEMP, M_WAITOK);
774 
775 	error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
776 			       0, bmsize, tmp, NULL);
777 	if (error)
778 		goto out;
779 
780 	for(i=0;i<bmsize;i++)
781 		for(j=0;j<8;j++)
782 			if(~tmp[i] & (1 << j)) cfree++;
783 	*cfreep = cfree;
784 
785     out:
786 	FREE(tmp, M_TEMP);
787 	return(error);
788 }
789 
790 static int
791 ntfs_statfs(
792 	struct mount *mp,
793 	struct statfs *sbp,
794 	struct thread *td)
795 {
796 	struct ntfsmount *ntmp = VFSTONTFS(mp);
797 	u_int64_t mftsize,mftallocated;
798 
799 	dprintf(("ntfs_statfs():\n"));
800 
801 	mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
802 	mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
803 
804 #if defined(__DragonFly__)
805 	sbp->f_type = mp->mnt_vfc->vfc_typenum;
806 #elif defined(__NetBSD__)
807 	sbp->f_type = 0;
808 #else
809 	sbp->f_type = MOUNT_NTFS;
810 #endif
811 	sbp->f_bsize = ntmp->ntm_bps;
812 	sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
813 	sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
814 	sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
815 	sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
816 	sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
817 		       sbp->f_ffree;
818 	if (sbp != &mp->mnt_stat) {
819 		bcopy((caddr_t)mp->mnt_stat.f_mntonname,
820 			(caddr_t)&sbp->f_mntonname[0], MNAMELEN);
821 		bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
822 			(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
823 	}
824 	sbp->f_flags = mp->mnt_flag;
825 #ifdef __NetBSD__
826 	strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
827 #endif
828 
829 	return (0);
830 }
831 
832 #if !defined(__DragonFly__)
833 static int
834 ntfs_sync (
835 	struct mount *mp,
836 	int waitfor,
837 	struct ucred *cred,
838 	struct thread *td)
839 {
840 	/*dprintf(("ntfs_sync():\n"));*/
841 	return (0);
842 }
843 #endif
844 
845 /*ARGSUSED*/
846 static int
847 ntfs_fhtovp(
848 	struct mount *mp,
849 	struct fid *fhp,
850 	struct vnode **vpp)
851 {
852 	struct vnode *nvp;
853 	struct ntfid *ntfhp = (struct ntfid *)fhp;
854 	int error;
855 
856 	ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
857 
858 	if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, &nvp)) != 0) {
859 		*vpp = NULLVP;
860 		return (error);
861 	}
862 	/* XXX as unlink/rmdir/mkdir/creat are not currently possible
863 	 * with NTFS, we don't need to check anything else for now */
864 	*vpp = nvp;
865 
866 	return (0);
867 }
868 
869 static int
870 ntfs_vptofh(
871 	struct vnode *vp,
872 	struct fid *fhp)
873 {
874 	struct ntnode *ntp;
875 	struct ntfid *ntfhp;
876 
877 	ddprintf(("ntfs_fhtovp(): %p\n", vp));
878 
879 	ntp = VTONT(vp);
880 	ntfhp = (struct ntfid *)fhp;
881 	ntfhp->ntfid_len = sizeof(struct ntfid);
882 	ntfhp->ntfid_ino = ntp->i_number;
883 	/* ntfhp->ntfid_gen = ntp->i_gen; */
884 	return (0);
885 }
886 
887 int
888 ntfs_vgetex(
889 	struct mount *mp,
890 	ino_t ino,
891 	u_int32_t attrtype,
892 	char *attrname,
893 	u_long lkflags,
894 	u_long flags,
895 	struct thread *td,
896 	struct vnode **vpp)
897 {
898 	int error;
899 	struct ntfsmount *ntmp;
900 	struct ntnode *ip;
901 	struct fnode *fp;
902 	struct vnode *vp;
903 	enum vtype f_type;
904 
905 	dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
906 		ino, attrtype, attrname?attrname:"", (u_long)lkflags,
907 		(u_long)flags ));
908 
909 	ntmp = VFSTONTFS(mp);
910 	*vpp = NULL;
911 
912 	/* Get ntnode */
913 	error = ntfs_ntlookup(ntmp, ino, &ip);
914 	if (error) {
915 		printf("ntfs_vget: ntfs_ntget failed\n");
916 		return (error);
917 	}
918 
919 	/* It may be not initialized fully, so force load it */
920 	if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
921 		error = ntfs_loadntnode(ntmp, ip);
922 		if(error) {
923 			printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
924 			       ip->i_number);
925 			ntfs_ntput(ip);
926 			return (error);
927 		}
928 	}
929 
930 	error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
931 	if (error) {
932 		printf("ntfs_vget: ntfs_fget failed\n");
933 		ntfs_ntput(ip);
934 		return (error);
935 	}
936 
937 	f_type = VNON;
938 	if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
939 		if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
940 		    (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
941 			f_type = VDIR;
942 		} else if (flags & VG_EXT) {
943 			f_type = VNON;
944 			fp->f_size = fp->f_allocated = 0;
945 		} else {
946 			f_type = VREG;
947 
948 			error = ntfs_filesize(ntmp, fp,
949 					      &fp->f_size, &fp->f_allocated);
950 			if (error) {
951 				ntfs_ntput(ip);
952 				return (error);
953 			}
954 		}
955 
956 		fp->f_flag |= FN_VALID;
957 	}
958 
959 	if (FTOV(fp)) {
960 		VGET(FTOV(fp), lkflags, td);
961 		*vpp = FTOV(fp);
962 		ntfs_ntput(ip);
963 		return (0);
964 	}
965 
966 	error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp);
967 	if(error) {
968 		ntfs_frele(fp);
969 		ntfs_ntput(ip);
970 		return (error);
971 	}
972 	dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
973 
974 #ifdef __DragonFly__
975 	lockinit(&fp->f_lock, 0, "fnode", VLKTIMEOUT, 0);
976 #endif
977 	fp->f_vp = vp;
978 	vp->v_data = fp;
979 	vp->v_type = f_type;
980 
981 	if (ino == NTFS_ROOTINO)
982 		vp->v_flag |= VROOT;
983 
984 	ntfs_ntput(ip);
985 
986 	if (lkflags & LK_TYPE_MASK) {
987 		KKASSERT((lkflags & LK_INTERLOCK) == 0);
988 		error = VN_LOCK(vp, lkflags, td);
989 		if (error) {
990 			vput(vp);
991 			return (error);
992 		}
993 	}
994 
995 	*vpp = vp;
996 	return (0);
997 
998 }
999 
1000 static int
1001 ntfs_vget(
1002 	struct mount *mp,
1003 	ino_t ino,
1004 	struct vnode **vpp)
1005 {
1006 	return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
1007 			LK_EXCLUSIVE | LK_RETRY, 0, curthread, vpp);
1008 }
1009 
1010 #if defined(__DragonFly__)
1011 static struct vfsops ntfs_vfsops = {
1012 	ntfs_mount,
1013 	vfs_stdstart,
1014 	ntfs_unmount,
1015 	ntfs_root,
1016 	vfs_stdquotactl,
1017 	ntfs_statfs,
1018 	vfs_stdsync,
1019 	ntfs_vget,
1020 	ntfs_fhtovp,
1021 	ntfs_checkexp,
1022 	ntfs_vptofh,
1023 	ntfs_init,
1024 	ntfs_nthash_uninit, /* see ntfs_ihash.c */
1025 	vfs_stdextattrctl,
1026 };
1027 VFS_SET(ntfs_vfsops, ntfs, 0);
1028 #elif defined(__NetBSD__)
1029 extern struct vnodeopv_desc ntfs_vnodeop_opv_desc;
1030 
1031 struct vnodeopv_desc *ntfs_vnodeopv_descs[] = {
1032 	&ntfs_vnodeop_opv_desc,
1033 	NULL,
1034 };
1035 
1036 struct vfsops ntfs_vfsops = {
1037 	MOUNT_NTFS,
1038 	ntfs_mount,
1039 	ntfs_start,
1040 	ntfs_unmount,
1041 	ntfs_root,
1042 	ntfs_quotactl,
1043 	ntfs_statfs,
1044 	ntfs_sync,
1045 	ntfs_vget,
1046 	ntfs_fhtovp,
1047 	ntfs_vptofh,
1048 	ntfs_init,
1049 	ntfs_sysctl,
1050 	ntfs_mountroot,
1051 	ntfs_checkexp,
1052 	ntfs_vnodeopv_descs,
1053 };
1054 #else /* !NetBSD && !FreeBSD */
1055 static struct vfsops ntfs_vfsops = {
1056 	ntfs_mount,
1057 	ntfs_start,
1058 	ntfs_unmount,
1059 	ntfs_root,
1060 	ntfs_quotactl,
1061 	ntfs_statfs,
1062 	ntfs_sync,
1063 	ntfs_vget,
1064 	ntfs_fhtovp,
1065 	ntfs_vptofh,
1066 	ntfs_init,
1067 };
1068 VFS_SET(ntfs_vfsops, ntfs, MOUNT_NTFS, 0);
1069 #endif
1070 
1071 
1072