xref: /netbsd-src/sys/fs/ntfs/ntfs_vfsops.c (revision 5b84b3983f71fd20a534cfa5d1556623a8aaa717) 
1 /*	$NetBSD: ntfs_vfsops.c,v 1.33 2005/08/30 19:01:30 xtraeme 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  *	Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp
29  */
30 
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: ntfs_vfsops.c,v 1.33 2005/08/30 19:01:30 xtraeme Exp $");
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/namei.h>
37 #include <sys/proc.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/sysctl.h>
45 #include <sys/device.h>
46 #include <sys/conf.h>
47 
48 #if defined(__NetBSD__)
49 #include <uvm/uvm_extern.h>
50 #else
51 #include <vm/vm.h>
52 #endif
53 
54 #include <miscfs/specfs/specdev.h>
55 
56 /*#define NTFS_DEBUG 1*/
57 #include <fs/ntfs/ntfs.h>
58 #include <fs/ntfs/ntfs_inode.h>
59 #include <fs/ntfs/ntfs_subr.h>
60 #include <fs/ntfs/ntfs_vfsops.h>
61 #include <fs/ntfs/ntfs_ihash.h>
62 #include <fs/ntfs/ntfsmount.h>
63 
64 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
65 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode",  "NTFS ntnode information");
66 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode",  "NTFS fnode information");
67 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir",  "NTFS dir buffer");
68 
69 #if defined(__FreeBSD__)
70 static int	ntfs_mount(struct mount *, char *, caddr_t,
71 				struct nameidata *, struct proc *);
72 #else
73 static int	ntfs_mount(struct mount *, const char *, void *,
74 				struct nameidata *, struct proc *);
75 #endif
76 static int	ntfs_quotactl(struct mount *, int, uid_t, void *,
77 				   struct proc *);
78 static int	ntfs_root(struct mount *, struct vnode **);
79 static int	ntfs_start(struct mount *, int, struct proc *);
80 static int	ntfs_statvfs(struct mount *, struct statvfs *,
81 				 struct proc *);
82 static int	ntfs_sync(struct mount *, int, struct ucred *,
83 			       struct proc *);
84 static int	ntfs_unmount(struct mount *, int, struct proc *);
85 static int	ntfs_vget(struct mount *mp, ino_t ino,
86 			       struct vnode **vpp);
87 static int	ntfs_mountfs(struct vnode *, struct mount *,
88 				  struct ntfs_args *, struct proc *);
89 static int	ntfs_vptofh(struct vnode *, struct fid *);
90 
91 #if defined(__FreeBSD__)
92 static int	ntfs_init(struct vfsconf *);
93 static int	ntfs_fhtovp(struct mount *, struct fid *,
94 				 struct sockaddr *, struct vnode **,
95 				 int *, struct ucred **);
96 #elif defined(__NetBSD__)
97 static void	ntfs_init(void);
98 static void	ntfs_reinit(void);
99 static void	ntfs_done(void);
100 static int	ntfs_fhtovp(struct mount *, struct fid *,
101 				 struct vnode **);
102 static int	ntfs_checkexp(struct mount *, struct mbuf *,
103 				   int *, struct ucred **);
104 static int	ntfs_mountroot(void);
105 #else
106 static int	ntfs_init(void);
107 static int	ntfs_fhtovp(struct mount *, struct fid *,
108 				 struct mbuf *, struct vnode **,
109 				 int *, struct ucred **);
110 #endif
111 
112 static const struct genfs_ops ntfs_genfsops = {
113 	.gop_write = genfs_compat_gop_write,
114 };
115 
116 #ifdef __NetBSD__
117 /*
118  * Verify a remote client has export rights and return these rights via.
119  * exflagsp and credanonp.
120  */
121 static int
122 ntfs_checkexp(mp, nam, exflagsp, credanonp)
123 	struct mount *mp;
124 	struct mbuf *nam;
125 	int *exflagsp;
126 	struct ucred **credanonp;
127 {
128 	struct netcred *np;
129 	struct ntfsmount *ntm = VFSTONTFS(mp);
130 
131 	/*
132 	 * Get the export permission structure for this <mp, client> tuple.
133 	 */
134 	np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
135 	if (np == NULL)
136 		return (EACCES);
137 
138 	*exflagsp = np->netc_exflags;
139 	*credanonp = &np->netc_anon;
140 	return (0);
141 }
142 
143 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup")
144 {
145 
146 	sysctl_createv(clog, 0, NULL, NULL,
147 		       CTLFLAG_PERMANENT,
148 		       CTLTYPE_NODE, "vfs", NULL,
149 		       NULL, 0, NULL, 0,
150 		       CTL_VFS, CTL_EOL);
151 	sysctl_createv(clog, 0, NULL, NULL,
152 		       CTLFLAG_PERMANENT,
153 		       CTLTYPE_NODE, "ntfs",
154 		       SYSCTL_DESCR("NTFS file system"),
155 		       NULL, 0, NULL, 0,
156 		       CTL_VFS, 20, CTL_EOL);
157 	/*
158 	 * XXX the "20" above could be dynamic, thereby eliminating
159 	 * one more instance of the "number to vfs" mapping problem,
160 	 * but "20" is the order as taken from sys/mount.h
161 	 */
162 }
163 
164 static int
165 ntfs_mountroot()
166 {
167 	struct mount *mp;
168 	struct proc *p = curproc;	/* XXX */
169 	int error;
170 	struct ntfs_args args;
171 
172 	if (root_device->dv_class != DV_DISK)
173 		return (ENODEV);
174 
175 	if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
176 		vrele(rootvp);
177 		return (error);
178 	}
179 
180 	args.flag = 0;
181 	args.uid = 0;
182 	args.gid = 0;
183 	args.mode = 0777;
184 
185 	if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
186 		mp->mnt_op->vfs_refcount--;
187 		vfs_unbusy(mp);
188 		free(mp, M_MOUNT);
189 		return (error);
190 	}
191 
192 	simple_lock(&mountlist_slock);
193 	CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
194 	simple_unlock(&mountlist_slock);
195 	(void)ntfs_statvfs(mp, &mp->mnt_stat, p);
196 	vfs_unbusy(mp);
197 	return (0);
198 }
199 
200 static void
201 ntfs_init()
202 {
203 #ifdef _LKM
204 	malloc_type_attach(M_NTFSMNT);
205 	malloc_type_attach(M_NTFSNTNODE);
206 	malloc_type_attach(M_NTFSFNODE);
207 	malloc_type_attach(M_NTFSDIR);
208 	malloc_type_attach(M_NTFSNTHASH);
209 	malloc_type_attach(M_NTFSNTVATTR);
210 	malloc_type_attach(M_NTFSRDATA);
211 	malloc_type_attach(M_NTFSDECOMP);
212 	malloc_type_attach(M_NTFSRUN);
213 #endif
214 	ntfs_nthashinit();
215 	ntfs_toupper_init();
216 }
217 
218 static void
219 ntfs_reinit()
220 {
221 	ntfs_nthashreinit();
222 }
223 
224 static void
225 ntfs_done()
226 {
227 	ntfs_nthashdone();
228 #ifdef _LKM
229 	malloc_type_detach(M_NTFSMNT);
230 	malloc_type_detach(M_NTFSNTNODE);
231 	malloc_type_detach(M_NTFSFNODE);
232 	malloc_type_detach(M_NTFSDIR);
233 	malloc_type_detach(M_NTFSNTHASH);
234 	malloc_type_detach(M_NTFSNTVATTR);
235 	malloc_type_detach(M_NTFSRDATA);
236 	malloc_type_detach(M_NTFSDECOMP);
237 	malloc_type_detach(M_NTFSRUN);
238 #endif
239 }
240 
241 #elif defined(__FreeBSD__)
242 
243 static int
244 ntfs_init (
245 	struct vfsconf *vcp )
246 {
247 	ntfs_nthashinit();
248 	ntfs_toupper_init();
249 	return 0;
250 }
251 
252 #endif /* NetBSD */
253 
254 static int
255 ntfs_mount (
256 	struct mount *mp,
257 #if defined(__FreeBSD__)
258 	char *path,
259 	caddr_t data,
260 #else
261 	const char *path,
262 	void *data,
263 #endif
264 	struct nameidata *ndp,
265 	struct proc *p )
266 {
267 	int		err = 0, flags;
268 	struct vnode	*devvp;
269 	struct ntfs_args args;
270 
271 	if (mp->mnt_flag & MNT_GETARGS) {
272 		struct ntfsmount *ntmp = VFSTONTFS(mp);
273 		if (ntmp == NULL)
274 			return EIO;
275 		args.fspec = NULL;
276 		args.uid = ntmp->ntm_uid;
277 		args.gid = ntmp->ntm_gid;
278 		args.mode = ntmp->ntm_mode;
279 		args.flag = ntmp->ntm_flag;
280 		vfs_showexport(mp, &args.export, &ntmp->ntm_export);
281 		return copyout(&args, data, sizeof(args));
282 	}
283 	/*
284 	 ***
285 	 * Mounting non-root file system or updating a file system
286 	 ***
287 	 */
288 
289 	/* copy in user arguments*/
290 	err = copyin(data, &args, sizeof (struct ntfs_args));
291 	if (err)
292 		return (err);		/* can't get arguments*/
293 
294 	/*
295 	 * If updating, check whether changing from read-only to
296 	 * read/write; if there is no device name, that's all we do.
297 	 */
298 	if (mp->mnt_flag & MNT_UPDATE) {
299 		/* if not updating name...*/
300 		if (args.fspec == 0) {
301 			/*
302 			 * Process export requests.  Jumping to "success"
303 			 * will return the vfs_export() error code.
304 			 */
305 			struct ntfsmount *ntm = VFSTONTFS(mp);
306 			return (vfs_export(mp, &ntm->ntm_export, &args.export));
307 		}
308 
309 		printf("ntfs_mount(): MNT_UPDATE not supported\n");
310 		return (EINVAL);
311 	}
312 
313 	/*
314 	 * Not an update, or updating the name: look up the name
315 	 * and verify that it refers to a sensible block device.
316 	 */
317 	NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
318 	err = namei(ndp);
319 	if (err) {
320 		/* can't get devvp!*/
321 		return (err);
322 	}
323 
324 	devvp = ndp->ni_vp;
325 
326 	if (devvp->v_type != VBLK) {
327 		err = ENOTBLK;
328 		goto fail;
329 	}
330 #ifdef __FreeBSD__
331 	if (bdevsw(devvp->v_rdev) == NULL) {
332 #else
333 	if (bdevsw_lookup(devvp->v_rdev) == NULL) {
334 #endif
335 		err = ENXIO;
336 		goto fail;
337 	}
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 			goto fail;
349 		}
350 
351 		/*
352 		 * Update device name only on success
353 		 */
354 		err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec,
355 		    UIO_USERSPACE, mp, p);
356 		if (err)
357 			goto fail;
358 
359 		vrele(devvp);
360 #endif
361 	} else {
362 		/*
363 		 ********************
364 		 * NEW MOUNT
365 		 ********************
366 		 */
367 
368 		/*
369 		 * Since this is a new mount, we want the names for
370 		 * the device and the mount point copied in.  If an
371 		 * error occurs,  the mountpoint is discarded by the
372 		 * upper level code.
373 		 */
374 
375 		/* Save "last mounted on" info for mount point (NULL pad)*/
376 		err = set_statvfs_info(path, UIO_USERSPACE, args.fspec,
377 		    UIO_USERSPACE, mp, p);
378 		if (err)
379 			goto fail;
380 
381 		/*
382 		 * Disallow multiple mounts of the same device.
383 		 * Disallow mounting of a device that is currently in use
384 		 * (except for root, which might share swap device for
385 		 * miniroot).
386 		 */
387 		err = vfs_mountedon(devvp);
388 		if (err)
389 			goto fail;
390 		if (vcount(devvp) > 1 && devvp != rootvp) {
391 			err = EBUSY;
392 			goto fail;
393 		}
394 		if (mp->mnt_flag & MNT_RDONLY)
395 			flags = FREAD;
396 		else
397 			flags = FREAD|FWRITE;
398 		err = VOP_OPEN(devvp, flags, FSCRED, p);
399 		if (err)
400 			goto fail;
401 		err = ntfs_mountfs(devvp, mp, &args, p);
402 		if (err) {
403 			vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
404 			(void)VOP_CLOSE(devvp, flags, NOCRED, p);
405 			VOP_UNLOCK(devvp, 0);
406 			goto fail;
407 		}
408 	}
409 
410 #ifdef __FreeBSD__
411 dostatvfs:
412 #endif
413 	/*
414 	 * Initialize FS stat information in mount struct; uses both
415 	 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
416 	 *
417 	 * This code is common to root and non-root mounts
418 	 */
419 	(void)VFS_STATVFS(mp, &mp->mnt_stat, p);
420 	return (err);
421 
422 fail:
423 	vrele(devvp);
424 	return (err);
425 }
426 
427 /*
428  * Common code for mount and mountroot
429  */
430 int
431 ntfs_mountfs(devvp, mp, argsp, p)
432 	struct vnode *devvp;
433 	struct mount *mp;
434 	struct ntfs_args *argsp;
435 	struct proc *p;
436 {
437 	struct buf *bp;
438 	struct ntfsmount *ntmp;
439 	dev_t dev = devvp->v_rdev;
440 	int error, ronly, i;
441 	struct vnode *vp;
442 
443 	/*
444 	 * Flush out any old buffers remaining from a previous use.
445 	 */
446 	vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
447 	error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
448 	VOP_UNLOCK(devvp, 0);
449 	if (error)
450 		return (error);
451 
452 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
453 
454 	bp = NULL;
455 
456 	error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
457 	if (error)
458 		goto out;
459 	ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK );
460 	bzero( ntmp, sizeof *ntmp );
461 	bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
462 	brelse( bp );
463 	bp = NULL;
464 
465 	if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
466 		error = EINVAL;
467 		dprintf(("ntfs_mountfs: invalid boot block\n"));
468 		goto out;
469 	}
470 
471 	{
472 		int8_t cpr = ntmp->ntm_mftrecsz;
473 		if( cpr > 0 )
474 			ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
475 		else
476 			ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
477 	}
478 	dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
479 		ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
480 		ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
481 	dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
482 		(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
483 
484 	ntmp->ntm_mountp = mp;
485 	ntmp->ntm_dev = dev;
486 	ntmp->ntm_devvp = devvp;
487 	ntmp->ntm_uid = argsp->uid;
488 	ntmp->ntm_gid = argsp->gid;
489 	ntmp->ntm_mode = argsp->mode;
490 	ntmp->ntm_flag = argsp->flag;
491 	mp->mnt_data = ntmp;
492 
493 	/* set file name encode/decode hooks XXX utf-8 only for now */
494 	ntmp->ntm_wget = ntfs_utf8_wget;
495 	ntmp->ntm_wput = ntfs_utf8_wput;
496 	ntmp->ntm_wcmp = ntfs_utf8_wcmp;
497 
498 	dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
499 		(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
500 		(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
501 		ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
502 
503 	/*
504 	 * We read in some system nodes to do not allow
505 	 * reclaim them and to have everytime access to them.
506 	 */
507 	{
508 		int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
509 		for (i=0; i<3; i++) {
510 			error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
511 			if(error)
512 				goto out1;
513 			ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
514 			VREF(ntmp->ntm_sysvn[pi[i]]);
515 			vput(ntmp->ntm_sysvn[pi[i]]);
516 		}
517 	}
518 
519 	/* read the Unicode lowercase --> uppercase translation table,
520 	 * if necessary */
521 	if ((error = ntfs_toupper_use(mp, ntmp)))
522 		goto out1;
523 
524 	/*
525 	 * Scan $BitMap and count free clusters
526 	 */
527 	error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
528 	if(error)
529 		goto out1;
530 
531 	/*
532 	 * Read and translate to internal format attribute
533 	 * definition file.
534 	 */
535 	{
536 		int num,j;
537 		struct attrdef ad;
538 
539 		/* Open $AttrDef */
540 		error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
541 		if(error)
542 			goto out1;
543 
544 		/* Count valid entries */
545 		for(num=0;;num++) {
546 			error = ntfs_readattr(ntmp, VTONT(vp),
547 					NTFS_A_DATA, NULL,
548 					num * sizeof(ad), sizeof(ad),
549 					&ad, NULL);
550 			if (error)
551 				goto out1;
552 			if (ad.ad_name[0] == 0)
553 				break;
554 		}
555 
556 		/* Alloc memory for attribute definitions */
557 		ntmp->ntm_ad = (struct ntvattrdef *) malloc(
558 			num * sizeof(struct ntvattrdef),
559 			M_NTFSMNT, M_WAITOK);
560 
561 		ntmp->ntm_adnum = num;
562 
563 		/* Read them and translate */
564 		for(i=0;i<num;i++){
565 			error = ntfs_readattr(ntmp, VTONT(vp),
566 					NTFS_A_DATA, NULL,
567 					i * sizeof(ad), sizeof(ad),
568 					&ad, NULL);
569 			if (error)
570 				goto out1;
571 			j = 0;
572 			do {
573 				ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
574 			} while(ad.ad_name[j++]);
575 			ntmp->ntm_ad[i].ad_namelen = j - 1;
576 			ntmp->ntm_ad[i].ad_type = ad.ad_type;
577 		}
578 
579 		vput(vp);
580 	}
581 
582 #if defined(__FreeBSD__)
583 	mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
584 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
585 #else
586 	mp->mnt_stat.f_fsidx.__fsid_val[0] = dev;
587 	mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS);
588 	mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
589 	mp->mnt_stat.f_namemax = NTFS_MAXFILENAME;
590 #endif
591 	mp->mnt_flag |= MNT_LOCAL;
592 	devvp->v_specmountpoint = mp;
593 	return (0);
594 
595 out1:
596 	for(i=0;i<NTFS_SYSNODESNUM;i++)
597 		if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
598 
599 	if (vflush(mp,NULLVP,0))
600 		dprintf(("ntfs_mountfs: vflush failed\n"));
601 
602 out:
603 	devvp->v_specmountpoint = NULL;
604 	if (bp)
605 		brelse(bp);
606 
607 	return (error);
608 }
609 
610 static int
611 ntfs_start (
612 	struct mount *mp,
613 	int flags,
614 	struct proc *p )
615 {
616 	return (0);
617 }
618 
619 static int
620 ntfs_unmount(
621 	struct mount *mp,
622 	int mntflags,
623 	struct proc *p)
624 {
625 	struct ntfsmount *ntmp;
626 	int error, ronly = 0, flags, i;
627 
628 	dprintf(("ntfs_unmount: unmounting...\n"));
629 	ntmp = VFSTONTFS(mp);
630 
631 	flags = 0;
632 	if(mntflags & MNT_FORCE)
633 		flags |= FORCECLOSE;
634 
635 	dprintf(("ntfs_unmount: vflushing...\n"));
636 	error = vflush(mp,NULLVP,flags | SKIPSYSTEM);
637 	if (error) {
638 		dprintf(("ntfs_unmount: vflush failed: %d\n",error));
639 		return (error);
640 	}
641 
642 	/* Check if only system vnodes are rest */
643 	for(i=0;i<NTFS_SYSNODESNUM;i++)
644 		 if((ntmp->ntm_sysvn[i]) &&
645 		    (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY);
646 
647 	/* Dereference all system vnodes */
648 	for(i=0;i<NTFS_SYSNODESNUM;i++)
649 		 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
650 
651 	/* vflush system vnodes */
652 	error = vflush(mp,NULLVP,flags);
653 	if (error) {
654 		/* XXX should this be panic() ? */
655 		printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
656 	}
657 
658 	/* Check if the type of device node isn't VBAD before
659 	 * touching v_specinfo.  If the device vnode is revoked, the
660 	 * field is NULL and touching it causes null pointer derefercence.
661 	 */
662 	if (ntmp->ntm_devvp->v_type != VBAD)
663 		ntmp->ntm_devvp->v_specmountpoint = NULL;
664 
665 	vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0);
666 
667 	/* lock the device vnode before calling VOP_CLOSE() */
668 	vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
669 	error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
670 		NOCRED, p);
671 	VOP_UNLOCK(ntmp->ntm_devvp, 0);
672 
673 	vrele(ntmp->ntm_devvp);
674 
675 	/* free the toupper table, if this has been last mounted ntfs volume */
676 	ntfs_toupper_unuse();
677 
678 	dprintf(("ntfs_umount: freeing memory...\n"));
679 	mp->mnt_data = NULL;
680 	mp->mnt_flag &= ~MNT_LOCAL;
681 	free(ntmp->ntm_ad, M_NTFSMNT);
682 	FREE(ntmp, M_NTFSMNT);
683 	return (error);
684 }
685 
686 static int
687 ntfs_root(
688 	struct mount *mp,
689 	struct vnode **vpp )
690 {
691 	struct vnode *nvp;
692 	int error = 0;
693 
694 	dprintf(("ntfs_root(): sysvn: %p\n",
695 		VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
696 	error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
697 	if(error) {
698 		printf("ntfs_root: VFS_VGET failed: %d\n",error);
699 		return (error);
700 	}
701 
702 	*vpp = nvp;
703 	return (0);
704 }
705 
706 /*
707  * Do operations associated with quotas, not supported
708  */
709 /* ARGSUSED */
710 static int
711 ntfs_quotactl (
712 	struct mount *mp,
713 	int cmds,
714 	uid_t uid,
715 	void *arg,
716 	struct proc *p)
717 {
718 
719 	return EOPNOTSUPP;
720 }
721 
722 int
723 ntfs_calccfree(
724 	struct ntfsmount *ntmp,
725 	cn_t *cfreep)
726 {
727 	struct vnode *vp;
728 	u_int8_t *tmp;
729 	int j, error;
730 	cn_t cfree = 0;
731 	size_t bmsize, i;
732 
733 	vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
734 
735 	bmsize = VTOF(vp)->f_size;
736 
737 	tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK);
738 
739 	error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
740 			       0, bmsize, tmp, NULL);
741 	if (error)
742 		goto out;
743 
744 	for(i=0;i<bmsize;i++)
745 		for(j=0;j<8;j++)
746 			if(~tmp[i] & (1 << j)) cfree++;
747 	*cfreep = cfree;
748 
749     out:
750 	free(tmp, M_TEMP);
751 	return(error);
752 }
753 
754 static int
755 ntfs_statvfs(
756 	struct mount *mp,
757 	struct statvfs *sbp,
758 	struct proc *p)
759 {
760 	struct ntfsmount *ntmp = VFSTONTFS(mp);
761 	u_int64_t mftallocated;
762 
763 	dprintf(("ntfs_statvfs():\n"));
764 
765 	mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
766 
767 #if defined(__FreeBSD__)
768 	sbp->f_type = mp->mnt_vfc->vfc_typenum;
769 #endif
770 	sbp->f_bsize = ntmp->ntm_bps;
771 	sbp->f_frsize = sbp->f_bsize; /* XXX */
772 	sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
773 	sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
774 	sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
775 	sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec;
776 	sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
777 	    sbp->f_ffree;
778 	sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */
779 	sbp->f_flag = mp->mnt_flag;
780 	copy_statvfs_info(sbp, mp);
781 	return (0);
782 }
783 
784 static int
785 ntfs_sync (
786 	struct mount *mp,
787 	int waitfor,
788 	struct ucred *cred,
789 	struct proc *p)
790 {
791 	/*dprintf(("ntfs_sync():\n"));*/
792 	return (0);
793 }
794 
795 /*ARGSUSED*/
796 static int
797 ntfs_fhtovp(
798 #if defined(__FreeBSD__)
799 	struct mount *mp,
800 	struct fid *fhp,
801 	struct sockaddr *nam,
802 	struct vnode **vpp,
803 	int *exflagsp,
804 	struct ucred **credanonp)
805 #elif defined(__NetBSD__)
806 	struct mount *mp,
807 	struct fid *fhp,
808 	struct vnode **vpp)
809 #else
810 	struct mount *mp,
811 	struct fid *fhp,
812 	struct mbuf *nam,
813 	struct vnode **vpp,
814 	int *exflagsp,
815 	struct ucred **credanonp)
816 #endif
817 {
818 	struct ntfid *ntfhp = (struct ntfid *)fhp;
819 	int error;
820 
821 	ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname,
822 		ntfhp->ntfid_ino));
823 
824 	error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL,
825 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
826 	if (error != 0) {
827 		*vpp = NULLVP;
828 		return (error);
829 	}
830 
831 	/* XXX as unlink/rmdir/mkdir/creat are not currently possible
832 	 * with NTFS, we don't need to check anything else for now */
833 	return (0);
834 }
835 
836 static int
837 ntfs_vptofh(
838 	struct vnode *vp,
839 	struct fid *fhp)
840 {
841 	struct ntnode *ntp;
842 	struct ntfid *ntfhp;
843 	struct fnode *fn;
844 
845 	ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname,
846 		vp));
847 
848 	fn = VTOF(vp);
849 	ntp = VTONT(vp);
850 	ntfhp = (struct ntfid *)fhp;
851 	ntfhp->ntfid_len = sizeof(struct ntfid);
852 	ntfhp->ntfid_ino = ntp->i_number;
853 	ntfhp->ntfid_attr = fn->f_attrtype;
854 #ifdef notyet
855 	ntfhp->ntfid_gen = ntp->i_gen;
856 #endif
857 	return (0);
858 }
859 
860 int
861 ntfs_vgetex(
862 	struct mount *mp,
863 	ino_t ino,
864 	u_int32_t attrtype,
865 	char *attrname,
866 	u_long lkflags,
867 	u_long flags,
868 	struct proc *p,
869 	struct vnode **vpp)
870 {
871 	int error;
872 	struct ntfsmount *ntmp;
873 	struct ntnode *ip;
874 	struct fnode *fp;
875 	struct vnode *vp;
876 	enum vtype f_type = VBAD;
877 
878 	dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
879 		ino, attrtype, attrname?attrname:"", (u_long)lkflags,
880 		(u_long)flags ));
881 
882 	ntmp = VFSTONTFS(mp);
883 	*vpp = NULL;
884 
885 	/* Get ntnode */
886 	error = ntfs_ntlookup(ntmp, ino, &ip);
887 	if (error) {
888 		printf("ntfs_vget: ntfs_ntget failed\n");
889 		return (error);
890 	}
891 
892 	/* It may be not initialized fully, so force load it */
893 	if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
894 		error = ntfs_loadntnode(ntmp, ip);
895 		if(error) {
896 			printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO:"
897 			    " %llu\n", (unsigned long long)ip->i_number);
898 			ntfs_ntput(ip);
899 			return (error);
900 		}
901 	}
902 
903 	error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
904 	if (error) {
905 		printf("ntfs_vget: ntfs_fget failed\n");
906 		ntfs_ntput(ip);
907 		return (error);
908 	}
909 
910 	if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
911 		if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
912 		    (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
913 			f_type = VDIR;
914 		} else if (flags & VG_EXT) {
915 			f_type = VNON;
916 			fp->f_size = fp->f_allocated = 0;
917 		} else {
918 			f_type = VREG;
919 
920 			error = ntfs_filesize(ntmp, fp,
921 					      &fp->f_size, &fp->f_allocated);
922 			if (error) {
923 				ntfs_ntput(ip);
924 				return (error);
925 			}
926 		}
927 
928 		fp->f_flag |= FN_VALID;
929 	}
930 
931 	/*
932 	 * We may be calling vget() now. To avoid potential deadlock, we need
933 	 * to release ntnode lock, since due to locking order vnode
934 	 * lock has to be acquired first.
935 	 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled
936 	 * prematurely.
937 	 */
938 	ntfs_ntput(ip);
939 
940 	if (FTOV(fp)) {
941 		/* vget() returns error if the vnode has been recycled */
942 		if (vget(FTOV(fp), lkflags) == 0) {
943 			*vpp = FTOV(fp);
944 			return (0);
945 		}
946 	}
947 
948 	error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp);
949 	if(error) {
950 		ntfs_frele(fp);
951 		ntfs_ntput(ip);
952 		return (error);
953 	}
954 	dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
955 
956 #ifdef __FreeBSD__
957 	lockinit(&fp->f_lock, PINOD, "fnode", 0, 0);
958 #endif
959 	fp->f_vp = vp;
960 	vp->v_data = fp;
961 	if (f_type != VBAD)
962 		vp->v_type = f_type;
963 
964 	if (ino == NTFS_ROOTINO)
965 		vp->v_flag |= VROOT;
966 
967 	if (lkflags & LK_TYPE_MASK) {
968 		error = vn_lock(vp, lkflags);
969 		if (error) {
970 			vput(vp);
971 			return (error);
972 		}
973 	}
974 
975 	genfs_node_init(vp, &ntfs_genfsops);
976 	VREF(ip->i_devvp);
977 	*vpp = vp;
978 	return (0);
979 }
980 
981 static int
982 ntfs_vget(
983 	struct mount *mp,
984 	ino_t ino,
985 	struct vnode **vpp)
986 {
987 	return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
988 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
989 }
990 
991 #if defined(__FreeBSD__)
992 static struct vfsops ntfs_vfsops = {
993 	ntfs_mount,
994 	ntfs_start,
995 	ntfs_unmount,
996 	ntfs_root,
997 	ntfs_quotactl,
998 	ntfs_statvfs,
999 	ntfs_sync,
1000 	ntfs_vget,
1001 	ntfs_fhtovp,
1002 	ntfs_vptofh,
1003 	ntfs_init,
1004 	NULL
1005 };
1006 VFS_SET(ntfs_vfsops, ntfs, 0);
1007 #elif defined(__NetBSD__)
1008 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc;
1009 
1010 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = {
1011 	&ntfs_vnodeop_opv_desc,
1012 	NULL,
1013 };
1014 
1015 struct vfsops ntfs_vfsops = {
1016 	MOUNT_NTFS,
1017 	ntfs_mount,
1018 	ntfs_start,
1019 	ntfs_unmount,
1020 	ntfs_root,
1021 	ntfs_quotactl,
1022 	ntfs_statvfs,
1023 	ntfs_sync,
1024 	ntfs_vget,
1025 	ntfs_fhtovp,
1026 	ntfs_vptofh,
1027 	ntfs_init,
1028 	ntfs_reinit,
1029 	ntfs_done,
1030 	NULL,
1031 	ntfs_mountroot,
1032 	ntfs_checkexp,
1033 	(int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp,
1034 	vfs_stdextattrctl,
1035 	ntfs_vnodeopv_descs,
1036 };
1037 VFS_ATTACH(ntfs_vfsops);
1038 #endif
1039