xref: /netbsd-src/sys/fs/ntfs/ntfs_vfsops.c (revision aa73cae19608873cc4d1f712c4a0f8f8435f1ffa) 
1 /*	$NetBSD: ntfs_vfsops.c,v 1.29 2005/02/26 22:58:55 perry 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 1.29 2005/02/26 22:58:55 perry 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 __P((struct mount *, char *, caddr_t,
71 				struct nameidata *, struct proc *));
72 #else
73 static int	ntfs_mount __P((struct mount *, const char *, void *,
74 				struct nameidata *, struct proc *));
75 #endif
76 static int	ntfs_quotactl __P((struct mount *, int, uid_t, void *,
77 				   struct proc *));
78 static int	ntfs_root __P((struct mount *, struct vnode **));
79 static int	ntfs_start __P((struct mount *, int, struct proc *));
80 static int	ntfs_statvfs __P((struct mount *, struct statvfs *,
81 				 struct proc *));
82 static int	ntfs_sync __P((struct mount *, int, struct ucred *,
83 			       struct proc *));
84 static int	ntfs_unmount __P((struct mount *, int, struct proc *));
85 static int	ntfs_vget __P((struct mount *mp, ino_t ino,
86 			       struct vnode **vpp));
87 static int	ntfs_mountfs __P((struct vnode *, struct mount *,
88 				  struct ntfs_args *, struct proc *));
89 static int	ntfs_vptofh __P((struct vnode *, struct fid *));
90 
91 #if defined(__FreeBSD__)
92 static int	ntfs_init __P((struct vfsconf *));
93 static int	ntfs_fhtovp __P((struct mount *, struct fid *,
94 				 struct sockaddr *, struct vnode **,
95 				 int *, struct ucred **));
96 #elif defined(__NetBSD__)
97 static void	ntfs_init __P((void));
98 static void	ntfs_reinit __P((void));
99 static void	ntfs_done __P((void));
100 static int	ntfs_fhtovp __P((struct mount *, struct fid *,
101 				 struct vnode **));
102 static int	ntfs_checkexp __P((struct mount *, struct mbuf *,
103 				   int *, struct ucred **));
104 static int	ntfs_mountroot __P((void));
105 #else
106 static int	ntfs_init __P((void));
107 static int	ntfs_fhtovp __P((struct mount *, struct fid *,
108 				 struct mbuf *, struct vnode **,
109 				 int *, struct ucred **));
110 #endif
111 
112 struct genfs_ops ntfs_genfsops = {
113 	NULL,
114 	NULL,
115 	genfs_compat_gop_write,
116 };
117 
118 #ifdef __NetBSD__
119 /*
120  * Verify a remote client has export rights and return these rights via.
121  * exflagsp and credanonp.
122  */
123 static int
124 ntfs_checkexp(mp, nam, exflagsp, credanonp)
125 	struct mount *mp;
126 	struct mbuf *nam;
127 	int *exflagsp;
128 	struct ucred **credanonp;
129 {
130 	struct netcred *np;
131 	struct ntfsmount *ntm = VFSTONTFS(mp);
132 
133 	/*
134 	 * Get the export permission structure for this <mp, client> tuple.
135 	 */
136 	np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
137 	if (np == NULL)
138 		return (EACCES);
139 
140 	*exflagsp = np->netc_exflags;
141 	*credanonp = &np->netc_anon;
142 	return (0);
143 }
144 
145 SYSCTL_SETUP(sysctl_vfs_ntfs_setup, "sysctl vfs.ntfs subtree setup")
146 {
147 
148 	sysctl_createv(clog, 0, NULL, NULL,
149 		       CTLFLAG_PERMANENT,
150 		       CTLTYPE_NODE, "vfs", NULL,
151 		       NULL, 0, NULL, 0,
152 		       CTL_VFS, CTL_EOL);
153 	sysctl_createv(clog, 0, NULL, NULL,
154 		       CTLFLAG_PERMANENT,
155 		       CTLTYPE_NODE, "ntfs",
156 		       SYSCTL_DESCR("NTFS file system"),
157 		       NULL, 0, NULL, 0,
158 		       CTL_VFS, 20, CTL_EOL);
159 	/*
160 	 * XXX the "20" above could be dynamic, thereby eliminating
161 	 * one more instance of the "number to vfs" mapping problem,
162 	 * but "20" is the order as taken from sys/mount.h
163 	 */
164 }
165 
166 static int
167 ntfs_mountroot()
168 {
169 	struct mount *mp;
170 	struct proc *p = curproc;	/* XXX */
171 	int error;
172 	struct ntfs_args args;
173 
174 	if (root_device->dv_class != DV_DISK)
175 		return (ENODEV);
176 
177 	if ((error = vfs_rootmountalloc(MOUNT_NTFS, "root_device", &mp))) {
178 		vrele(rootvp);
179 		return (error);
180 	}
181 
182 	args.flag = 0;
183 	args.uid = 0;
184 	args.gid = 0;
185 	args.mode = 0777;
186 
187 	if ((error = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
188 		mp->mnt_op->vfs_refcount--;
189 		vfs_unbusy(mp);
190 		free(mp, M_MOUNT);
191 		return (error);
192 	}
193 
194 	simple_lock(&mountlist_slock);
195 	CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
196 	simple_unlock(&mountlist_slock);
197 	(void)ntfs_statvfs(mp, &mp->mnt_stat, p);
198 	vfs_unbusy(mp);
199 	return (0);
200 }
201 
202 static void
203 ntfs_init()
204 {
205 #ifdef _LKM
206 	malloc_type_attach(M_NTFSMNT);
207 	malloc_type_attach(M_NTFSNTNODE);
208 	malloc_type_attach(M_NTFSFNODE);
209 	malloc_type_attach(M_NTFSDIR);
210 	malloc_type_attach(M_NTFSNTHASH);
211 	malloc_type_attach(M_NTFSNTVATTR);
212 	malloc_type_attach(M_NTFSRDATA);
213 	malloc_type_attach(M_NTFSDECOMP);
214 	malloc_type_attach(M_NTFSRUN);
215 #endif
216 	ntfs_nthashinit();
217 	ntfs_toupper_init();
218 }
219 
220 static void
221 ntfs_reinit()
222 {
223 	ntfs_nthashreinit();
224 }
225 
226 static void
227 ntfs_done()
228 {
229 	ntfs_nthashdone();
230 #ifdef _LKM
231 	malloc_type_detach(M_NTFSMNT);
232 	malloc_type_detach(M_NTFSNTNODE);
233 	malloc_type_detach(M_NTFSFNODE);
234 	malloc_type_detach(M_NTFSDIR);
235 	malloc_type_detach(M_NTFSNTHASH);
236 	malloc_type_detach(M_NTFSNTVATTR);
237 	malloc_type_detach(M_NTFSRDATA);
238 	malloc_type_detach(M_NTFSDECOMP);
239 	malloc_type_detach(M_NTFSRUN);
240 #endif
241 }
242 
243 #elif defined(__FreeBSD__)
244 
245 static int
246 ntfs_init (
247 	struct vfsconf *vcp )
248 {
249 	ntfs_nthashinit();
250 	ntfs_toupper_init();
251 	return 0;
252 }
253 
254 #endif /* NetBSD */
255 
256 static int
257 ntfs_mount (
258 	struct mount *mp,
259 #if defined(__FreeBSD__)
260 	char *path,
261 	caddr_t data,
262 #else
263 	const char *path,
264 	void *data,
265 #endif
266 	struct nameidata *ndp,
267 	struct proc *p )
268 {
269 	int		err = 0, flags;
270 	struct vnode	*devvp;
271 	struct ntfs_args args;
272 
273 	if (mp->mnt_flag & MNT_GETARGS) {
274 		struct ntfsmount *ntmp = VFSTONTFS(mp);
275 		if (ntmp == NULL)
276 			return EIO;
277 		args.fspec = NULL;
278 		args.uid = ntmp->ntm_uid;
279 		args.gid = ntmp->ntm_gid;
280 		args.mode = ntmp->ntm_mode;
281 		args.flag = ntmp->ntm_flag;
282 		vfs_showexport(mp, &args.export, &ntmp->ntm_export);
283 		return copyout(&args, data, sizeof(args));
284 	}
285 	/*
286 	 ***
287 	 * Mounting non-root file system or updating a file system
288 	 ***
289 	 */
290 
291 	/* copy in user arguments*/
292 	err = copyin(data, &args, sizeof (struct ntfs_args));
293 	if (err)
294 		return (err);		/* can't get arguments*/
295 
296 	/*
297 	 * If updating, check whether changing from read-only to
298 	 * read/write; if there is no device name, that's all we do.
299 	 */
300 	if (mp->mnt_flag & MNT_UPDATE) {
301 		/* if not updating name...*/
302 		if (args.fspec == 0) {
303 			/*
304 			 * Process export requests.  Jumping to "success"
305 			 * will return the vfs_export() error code.
306 			 */
307 			struct ntfsmount *ntm = VFSTONTFS(mp);
308 			return (vfs_export(mp, &ntm->ntm_export, &args.export));
309 		}
310 
311 		printf("ntfs_mount(): MNT_UPDATE not supported\n");
312 		return (EINVAL);
313 	}
314 
315 	/*
316 	 * Not an update, or updating the name: look up the name
317 	 * and verify that it refers to a sensible block device.
318 	 */
319 	NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
320 	err = namei(ndp);
321 	if (err) {
322 		/* can't get devvp!*/
323 		return (err);
324 	}
325 
326 	devvp = ndp->ni_vp;
327 
328 	if (devvp->v_type != VBLK) {
329 		err = ENOTBLK;
330 		goto fail;
331 	}
332 #ifdef __FreeBSD__
333 	if (bdevsw(devvp->v_rdev) == NULL) {
334 #else
335 	if (bdevsw_lookup(devvp->v_rdev) == NULL) {
336 #endif
337 		err = ENXIO;
338 		goto fail;
339 	}
340 	if (mp->mnt_flag & MNT_UPDATE) {
341 #if 0
342 		/*
343 		 ********************
344 		 * UPDATE
345 		 ********************
346 		 */
347 
348 		if (devvp != ntmp->um_devvp) {
349 			err = EINVAL;	/* needs translation */
350 			goto fail;
351 		}
352 
353 		/*
354 		 * Update device name only on success
355 		 */
356 		err = set_statvfs_info(NULL, UIO_USERSPACE, args.fspec,
357 		    UIO_USERSPACE, mp, p);
358 		if (err)
359 			goto fail;
360 
361 		vrele(devvp);
362 #endif
363 	} else {
364 		/*
365 		 ********************
366 		 * NEW MOUNT
367 		 ********************
368 		 */
369 
370 		/*
371 		 * Since this is a new mount, we want the names for
372 		 * the device and the mount point copied in.  If an
373 		 * error occurs,  the mountpoint is discarded by the
374 		 * upper level code.
375 		 */
376 
377 		/* Save "last mounted on" info for mount point (NULL pad)*/
378 		err = set_statvfs_info(path, UIO_USERSPACE, args.fspec,
379 		    UIO_USERSPACE, mp, p);
380 		if (err)
381 			goto fail;
382 
383 		/*
384 		 * Disallow multiple mounts of the same device.
385 		 * Disallow mounting of a device that is currently in use
386 		 * (except for root, which might share swap device for
387 		 * miniroot).
388 		 */
389 		err = vfs_mountedon(devvp);
390 		if (err)
391 			goto fail;
392 		if (vcount(devvp) > 1 && devvp != rootvp) {
393 			err = EBUSY;
394 			goto fail;
395 		}
396 		if (mp->mnt_flag & MNT_RDONLY)
397 			flags = FREAD;
398 		else
399 			flags = FREAD|FWRITE;
400 		err = VOP_OPEN(devvp, flags, FSCRED, p);
401 		if (err)
402 			goto fail;
403 		err = ntfs_mountfs(devvp, mp, &args, p);
404 		if (err) {
405 			vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
406 			(void)VOP_CLOSE(devvp, flags, NOCRED, p);
407 			VOP_UNLOCK(devvp, 0);
408 			goto fail;
409 		}
410 	}
411 
412 #ifdef __FreeBSD__
413 dostatvfs:
414 #endif
415 	/*
416 	 * Initialize FS stat information in mount struct; uses both
417 	 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
418 	 *
419 	 * This code is common to root and non-root mounts
420 	 */
421 	(void)VFS_STATVFS(mp, &mp->mnt_stat, p);
422 	return (err);
423 
424 fail:
425 	vrele(devvp);
426 	return (err);
427 }
428 
429 /*
430  * Common code for mount and mountroot
431  */
432 int
433 ntfs_mountfs(devvp, mp, argsp, p)
434 	struct vnode *devvp;
435 	struct mount *mp;
436 	struct ntfs_args *argsp;
437 	struct proc *p;
438 {
439 	struct buf *bp;
440 	struct ntfsmount *ntmp;
441 	dev_t dev = devvp->v_rdev;
442 	int error, ronly, i;
443 	struct vnode *vp;
444 
445 	/*
446 	 * Flush out any old buffers remaining from a previous use.
447 	 */
448 	vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
449 	error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
450 	VOP_UNLOCK(devvp, 0);
451 	if (error)
452 		return (error);
453 
454 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
455 
456 	bp = NULL;
457 
458 	error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
459 	if (error)
460 		goto out;
461 	ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK );
462 	bzero( ntmp, sizeof *ntmp );
463 	bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
464 	brelse( bp );
465 	bp = NULL;
466 
467 	if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
468 		error = EINVAL;
469 		dprintf(("ntfs_mountfs: invalid boot block\n"));
470 		goto out;
471 	}
472 
473 	{
474 		int8_t cpr = ntmp->ntm_mftrecsz;
475 		if( cpr > 0 )
476 			ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
477 		else
478 			ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
479 	}
480 	dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
481 		ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
482 		ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
483 	dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
484 		(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
485 
486 	ntmp->ntm_mountp = mp;
487 	ntmp->ntm_dev = dev;
488 	ntmp->ntm_devvp = devvp;
489 	ntmp->ntm_uid = argsp->uid;
490 	ntmp->ntm_gid = argsp->gid;
491 	ntmp->ntm_mode = argsp->mode;
492 	ntmp->ntm_flag = argsp->flag;
493 	mp->mnt_data = ntmp;
494 
495 	/* set file name encode/decode hooks XXX utf-8 only for now */
496 	ntmp->ntm_wget = ntfs_utf8_wget;
497 	ntmp->ntm_wput = ntfs_utf8_wput;
498 	ntmp->ntm_wcmp = ntfs_utf8_wcmp;
499 
500 	dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
501 		(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
502 		(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
503 		ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
504 
505 	/*
506 	 * We read in some system nodes to do not allow
507 	 * reclaim them and to have everytime access to them.
508 	 */
509 	{
510 		int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
511 		for (i=0; i<3; i++) {
512 			error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
513 			if(error)
514 				goto out1;
515 			ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
516 			VREF(ntmp->ntm_sysvn[pi[i]]);
517 			vput(ntmp->ntm_sysvn[pi[i]]);
518 		}
519 	}
520 
521 	/* read the Unicode lowercase --> uppercase translation table,
522 	 * if necessary */
523 	if ((error = ntfs_toupper_use(mp, ntmp)))
524 		goto out1;
525 
526 	/*
527 	 * Scan $BitMap and count free clusters
528 	 */
529 	error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
530 	if(error)
531 		goto out1;
532 
533 	/*
534 	 * Read and translate to internal format attribute
535 	 * definition file.
536 	 */
537 	{
538 		int num,j;
539 		struct attrdef ad;
540 
541 		/* Open $AttrDef */
542 		error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
543 		if(error)
544 			goto out1;
545 
546 		/* Count valid entries */
547 		for(num=0;;num++) {
548 			error = ntfs_readattr(ntmp, VTONT(vp),
549 					NTFS_A_DATA, NULL,
550 					num * sizeof(ad), sizeof(ad),
551 					&ad, NULL);
552 			if (error)
553 				goto out1;
554 			if (ad.ad_name[0] == 0)
555 				break;
556 		}
557 
558 		/* Alloc memory for attribute definitions */
559 		ntmp->ntm_ad = (struct ntvattrdef *) malloc(
560 			num * sizeof(struct ntvattrdef),
561 			M_NTFSMNT, M_WAITOK);
562 
563 		ntmp->ntm_adnum = num;
564 
565 		/* Read them and translate */
566 		for(i=0;i<num;i++){
567 			error = ntfs_readattr(ntmp, VTONT(vp),
568 					NTFS_A_DATA, NULL,
569 					i * sizeof(ad), sizeof(ad),
570 					&ad, NULL);
571 			if (error)
572 				goto out1;
573 			j = 0;
574 			do {
575 				ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
576 			} while(ad.ad_name[j++]);
577 			ntmp->ntm_ad[i].ad_namelen = j - 1;
578 			ntmp->ntm_ad[i].ad_type = ad.ad_type;
579 		}
580 
581 		vput(vp);
582 	}
583 
584 #if defined(__FreeBSD__)
585 	mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
586 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
587 #else
588 	mp->mnt_stat.f_fsidx.__fsid_val[0] = dev;
589 	mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_NTFS);
590 	mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
591 	mp->mnt_stat.f_namemax = NTFS_MAXFILENAME;
592 #endif
593 	mp->mnt_flag |= MNT_LOCAL;
594 	devvp->v_specmountpoint = mp;
595 	return (0);
596 
597 out1:
598 	for(i=0;i<NTFS_SYSNODESNUM;i++)
599 		if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
600 
601 	if (vflush(mp,NULLVP,0))
602 		dprintf(("ntfs_mountfs: vflush failed\n"));
603 
604 out:
605 	devvp->v_specmountpoint = NULL;
606 	if (bp)
607 		brelse(bp);
608 
609 	return (error);
610 }
611 
612 static int
613 ntfs_start (
614 	struct mount *mp,
615 	int flags,
616 	struct proc *p )
617 {
618 	return (0);
619 }
620 
621 static int
622 ntfs_unmount(
623 	struct mount *mp,
624 	int mntflags,
625 	struct proc *p)
626 {
627 	struct ntfsmount *ntmp;
628 	int error, ronly = 0, flags, i;
629 
630 	dprintf(("ntfs_unmount: unmounting...\n"));
631 	ntmp = VFSTONTFS(mp);
632 
633 	flags = 0;
634 	if(mntflags & MNT_FORCE)
635 		flags |= FORCECLOSE;
636 
637 	dprintf(("ntfs_unmount: vflushing...\n"));
638 	error = vflush(mp,NULLVP,flags | SKIPSYSTEM);
639 	if (error) {
640 		dprintf(("ntfs_unmount: vflush failed: %d\n",error));
641 		return (error);
642 	}
643 
644 	/* Check if only system vnodes are rest */
645 	for(i=0;i<NTFS_SYSNODESNUM;i++)
646 		 if((ntmp->ntm_sysvn[i]) &&
647 		    (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY);
648 
649 	/* Dereference all system vnodes */
650 	for(i=0;i<NTFS_SYSNODESNUM;i++)
651 		 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
652 
653 	/* vflush system vnodes */
654 	error = vflush(mp,NULLVP,flags);
655 	if (error) {
656 		/* XXX should this be panic() ? */
657 		printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
658 	}
659 
660 	/* Check if the type of device node isn't VBAD before
661 	 * touching v_specinfo.  If the device vnode is revoked, the
662 	 * field is NULL and touching it causes null pointer derefercence.
663 	 */
664 	if (ntmp->ntm_devvp->v_type != VBAD)
665 		ntmp->ntm_devvp->v_specmountpoint = NULL;
666 
667 	vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0);
668 
669 	/* lock the device vnode before calling VOP_CLOSE() */
670 	vn_lock(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY);
671 	error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
672 		NOCRED, p);
673 	VOP_UNLOCK(ntmp->ntm_devvp, 0);
674 
675 	vrele(ntmp->ntm_devvp);
676 
677 	/* free the toupper table, if this has been last mounted ntfs volume */
678 	ntfs_toupper_unuse();
679 
680 	dprintf(("ntfs_umount: freeing memory...\n"));
681 	mp->mnt_data = NULL;
682 	mp->mnt_flag &= ~MNT_LOCAL;
683 	free(ntmp->ntm_ad, M_NTFSMNT);
684 	FREE(ntmp, M_NTFSMNT);
685 	return (error);
686 }
687 
688 static int
689 ntfs_root(
690 	struct mount *mp,
691 	struct vnode **vpp )
692 {
693 	struct vnode *nvp;
694 	int error = 0;
695 
696 	dprintf(("ntfs_root(): sysvn: %p\n",
697 		VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
698 	error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
699 	if(error) {
700 		printf("ntfs_root: VFS_VGET failed: %d\n",error);
701 		return (error);
702 	}
703 
704 	*vpp = nvp;
705 	return (0);
706 }
707 
708 /*
709  * Do operations associated with quotas, not supported
710  */
711 /* ARGSUSED */
712 static int
713 ntfs_quotactl (
714 	struct mount *mp,
715 	int cmds,
716 	uid_t uid,
717 	void *arg,
718 	struct proc *p)
719 {
720 
721 	return EOPNOTSUPP;
722 }
723 
724 int
725 ntfs_calccfree(
726 	struct ntfsmount *ntmp,
727 	cn_t *cfreep)
728 {
729 	struct vnode *vp;
730 	u_int8_t *tmp;
731 	int j, error;
732 	cn_t cfree = 0;
733 	size_t bmsize, i;
734 
735 	vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
736 
737 	bmsize = VTOF(vp)->f_size;
738 
739 	tmp = (u_int8_t *) malloc(bmsize, M_TEMP, M_WAITOK);
740 
741 	error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
742 			       0, bmsize, tmp, NULL);
743 	if (error)
744 		goto out;
745 
746 	for(i=0;i<bmsize;i++)
747 		for(j=0;j<8;j++)
748 			if(~tmp[i] & (1 << j)) cfree++;
749 	*cfreep = cfree;
750 
751     out:
752 	free(tmp, M_TEMP);
753 	return(error);
754 }
755 
756 static int
757 ntfs_statvfs(
758 	struct mount *mp,
759 	struct statvfs *sbp,
760 	struct proc *p)
761 {
762 	struct ntfsmount *ntmp = VFSTONTFS(mp);
763 	u_int64_t mftallocated;
764 
765 	dprintf(("ntfs_statvfs():\n"));
766 
767 	mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
768 
769 #if defined(__FreeBSD__)
770 	sbp->f_type = mp->mnt_vfc->vfc_typenum;
771 #endif
772 	sbp->f_bsize = ntmp->ntm_bps;
773 	sbp->f_frsize = sbp->f_bsize; /* XXX */
774 	sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
775 	sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
776 	sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
777 	sbp->f_ffree = sbp->f_favail = sbp->f_bfree / ntmp->ntm_bpmftrec;
778 	sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
779 	    sbp->f_ffree;
780 	sbp->f_fresvd = sbp->f_bresvd = 0; /* XXX */
781 	sbp->f_flag = mp->mnt_flag;
782 	copy_statvfs_info(sbp, mp);
783 	return (0);
784 }
785 
786 static int
787 ntfs_sync (
788 	struct mount *mp,
789 	int waitfor,
790 	struct ucred *cred,
791 	struct proc *p)
792 {
793 	/*dprintf(("ntfs_sync():\n"));*/
794 	return (0);
795 }
796 
797 /*ARGSUSED*/
798 static int
799 ntfs_fhtovp(
800 #if defined(__FreeBSD__)
801 	struct mount *mp,
802 	struct fid *fhp,
803 	struct sockaddr *nam,
804 	struct vnode **vpp,
805 	int *exflagsp,
806 	struct ucred **credanonp)
807 #elif defined(__NetBSD__)
808 	struct mount *mp,
809 	struct fid *fhp,
810 	struct vnode **vpp)
811 #else
812 	struct mount *mp,
813 	struct fid *fhp,
814 	struct mbuf *nam,
815 	struct vnode **vpp,
816 	int *exflagsp,
817 	struct ucred **credanonp)
818 #endif
819 {
820 	struct ntfid *ntfhp = (struct ntfid *)fhp;
821 	int error;
822 
823 	ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname,
824 		ntfhp->ntfid_ino));
825 
826 	error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL,
827 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
828 	if (error != 0) {
829 		*vpp = NULLVP;
830 		return (error);
831 	}
832 
833 	/* XXX as unlink/rmdir/mkdir/creat are not currently possible
834 	 * with NTFS, we don't need to check anything else for now */
835 	return (0);
836 }
837 
838 static int
839 ntfs_vptofh(
840 	struct vnode *vp,
841 	struct fid *fhp)
842 {
843 	struct ntnode *ntp;
844 	struct ntfid *ntfhp;
845 	struct fnode *fn;
846 
847 	ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname,
848 		vp));
849 
850 	fn = VTOF(vp);
851 	ntp = VTONT(vp);
852 	ntfhp = (struct ntfid *)fhp;
853 	ntfhp->ntfid_len = sizeof(struct ntfid);
854 	ntfhp->ntfid_ino = ntp->i_number;
855 	ntfhp->ntfid_attr = fn->f_attrtype;
856 #ifdef notyet
857 	ntfhp->ntfid_gen = ntp->i_gen;
858 #endif
859 	return (0);
860 }
861 
862 int
863 ntfs_vgetex(
864 	struct mount *mp,
865 	ino_t ino,
866 	u_int32_t attrtype,
867 	char *attrname,
868 	u_long lkflags,
869 	u_long flags,
870 	struct proc *p,
871 	struct vnode **vpp)
872 {
873 	int error;
874 	struct ntfsmount *ntmp;
875 	struct ntnode *ip;
876 	struct fnode *fp;
877 	struct vnode *vp;
878 	enum vtype f_type = VBAD;
879 
880 	dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
881 		ino, attrtype, attrname?attrname:"", (u_long)lkflags,
882 		(u_long)flags ));
883 
884 	ntmp = VFSTONTFS(mp);
885 	*vpp = NULL;
886 
887 	/* Get ntnode */
888 	error = ntfs_ntlookup(ntmp, ino, &ip);
889 	if (error) {
890 		printf("ntfs_vget: ntfs_ntget failed\n");
891 		return (error);
892 	}
893 
894 	/* It may be not initialized fully, so force load it */
895 	if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
896 		error = ntfs_loadntnode(ntmp, ip);
897 		if(error) {
898 			printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
899 			       ip->i_number);
900 			ntfs_ntput(ip);
901 			return (error);
902 		}
903 	}
904 
905 	error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
906 	if (error) {
907 		printf("ntfs_vget: ntfs_fget failed\n");
908 		ntfs_ntput(ip);
909 		return (error);
910 	}
911 
912 	if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
913 		if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
914 		    (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
915 			f_type = VDIR;
916 		} else if (flags & VG_EXT) {
917 			f_type = VNON;
918 			fp->f_size = fp->f_allocated = 0;
919 		} else {
920 			f_type = VREG;
921 
922 			error = ntfs_filesize(ntmp, fp,
923 					      &fp->f_size, &fp->f_allocated);
924 			if (error) {
925 				ntfs_ntput(ip);
926 				return (error);
927 			}
928 		}
929 
930 		fp->f_flag |= FN_VALID;
931 	}
932 
933 	/*
934 	 * We may be calling vget() now. To avoid potential deadlock, we need
935 	 * to release ntnode lock, since due to locking order vnode
936 	 * lock has to be acquired first.
937 	 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled
938 	 * prematurely.
939 	 */
940 	ntfs_ntput(ip);
941 
942 	if (FTOV(fp)) {
943 		/* vget() returns error if the vnode has been recycled */
944 		if (vget(FTOV(fp), lkflags) == 0) {
945 			*vpp = FTOV(fp);
946 			return (0);
947 		}
948 	}
949 
950 	error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, ntfs_vnodeop_p, &vp);
951 	if(error) {
952 		ntfs_frele(fp);
953 		ntfs_ntput(ip);
954 		return (error);
955 	}
956 	dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
957 
958 #ifdef __FreeBSD__
959 	lockinit(&fp->f_lock, PINOD, "fnode", 0, 0);
960 #endif
961 	fp->f_vp = vp;
962 	vp->v_data = fp;
963 	if (f_type != VBAD)
964 		vp->v_type = f_type;
965 
966 	if (ino == NTFS_ROOTINO)
967 		vp->v_flag |= VROOT;
968 
969 	if (lkflags & LK_TYPE_MASK) {
970 		error = vn_lock(vp, lkflags);
971 		if (error) {
972 			vput(vp);
973 			return (error);
974 		}
975 	}
976 
977 	genfs_node_init(vp, &ntfs_genfsops);
978 	VREF(ip->i_devvp);
979 	*vpp = vp;
980 	return (0);
981 }
982 
983 static int
984 ntfs_vget(
985 	struct mount *mp,
986 	ino_t ino,
987 	struct vnode **vpp)
988 {
989 	return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
990 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
991 }
992 
993 #if defined(__FreeBSD__)
994 static struct vfsops ntfs_vfsops = {
995 	ntfs_mount,
996 	ntfs_start,
997 	ntfs_unmount,
998 	ntfs_root,
999 	ntfs_quotactl,
1000 	ntfs_statvfs,
1001 	ntfs_sync,
1002 	ntfs_vget,
1003 	ntfs_fhtovp,
1004 	ntfs_vptofh,
1005 	ntfs_init,
1006 	NULL
1007 };
1008 VFS_SET(ntfs_vfsops, ntfs, 0);
1009 #elif defined(__NetBSD__)
1010 extern const struct vnodeopv_desc ntfs_vnodeop_opv_desc;
1011 
1012 const struct vnodeopv_desc * const ntfs_vnodeopv_descs[] = {
1013 	&ntfs_vnodeop_opv_desc,
1014 	NULL,
1015 };
1016 
1017 struct vfsops ntfs_vfsops = {
1018 	MOUNT_NTFS,
1019 	ntfs_mount,
1020 	ntfs_start,
1021 	ntfs_unmount,
1022 	ntfs_root,
1023 	ntfs_quotactl,
1024 	ntfs_statvfs,
1025 	ntfs_sync,
1026 	ntfs_vget,
1027 	ntfs_fhtovp,
1028 	ntfs_vptofh,
1029 	ntfs_init,
1030 	ntfs_reinit,
1031 	ntfs_done,
1032 	NULL,
1033 	ntfs_mountroot,
1034 	ntfs_checkexp,
1035 	(int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp,
1036 	vfs_stdextattrctl,
1037 	ntfs_vnodeopv_descs,
1038 };
1039 #endif
1040