xref: /openbsd/sys/ntfs/ntfs_vfsops.c (revision 891d7ab6) 
1 /*	$OpenBSD: ntfs_vfsops.c,v 1.26 2011/07/04 04:30:41 tedu Exp $	*/
2 /*	$NetBSD: ntfs_vfsops.c,v 1.7 2003/04/24 07:50:19 christos Exp $	*/
3 
4 /*-
5  * Copyright (c) 1998, 1999 Semen Ustimenko
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  *	Id: ntfs_vfsops.c,v 1.7 1999/05/31 11:28:30 phk Exp
30  */
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/namei.h>
35 #include <sys/proc.h>
36 #include <sys/kernel.h>
37 #include <sys/vnode.h>
38 #include <sys/mount.h>
39 #include <sys/buf.h>
40 #include <sys/disk.h>
41 #include <sys/fcntl.h>
42 #include <sys/malloc.h>
43 #include <sys/systm.h>
44 #include <sys/device.h>
45 #include <sys/conf.h>
46 
47 #if defined(__NetBSD__) || defined(__OpenBSD__)
48 #include <uvm/uvm_extern.h>
49 #else
50 #include <vm/vm.h>
51 #endif
52 
53 #include <miscfs/specfs/specdev.h>
54 
55 /*#define NTFS_DEBUG 1*/
56 #if defined(__FreeBSD__) || defined(__NetBSD__)
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 #else
64 #include <ntfs/ntfs.h>
65 #include <ntfs/ntfs_inode.h>
66 #include <ntfs/ntfs_subr.h>
67 #include <ntfs/ntfs_vfsops.h>
68 #include <ntfs/ntfs_ihash.h>
69 #include <ntfs/ntfsmount.h>
70 #endif
71 
72 #ifdef MALLOC_DEFINE
73 MALLOC_DEFINE(M_NTFSMNT, "NTFS mount", "NTFS mount structure");
74 MALLOC_DEFINE(M_NTFSNTNODE,"NTFS ntnode",  "NTFS ntnode information");
75 MALLOC_DEFINE(M_NTFSFNODE,"NTFS fnode",  "NTFS fnode information");
76 MALLOC_DEFINE(M_NTFSDIR,"NTFS dir",  "NTFS dir buffer");
77 #endif
78 
79 #if defined(__FreeBSD__)
80 static int	ntfs_mount(struct mount *, char *, caddr_t,
81 				struct nameidata *, struct proc *);
82 #else
83 static int	ntfs_mount(struct mount *, const char *, void *,
84 				struct nameidata *, struct proc *);
85 #endif
86 static int	ntfs_quotactl(struct mount *, int, uid_t, caddr_t,
87 				   struct proc *);
88 static int	ntfs_root(struct mount *, struct vnode **);
89 static int	ntfs_start(struct mount *, int, struct proc *);
90 static int	ntfs_statfs(struct mount *, struct statfs *,
91 				 struct proc *);
92 static int	ntfs_sync(struct mount *, int, struct ucred *,
93 			       struct proc *);
94 static int	ntfs_unmount(struct mount *, int, struct proc *);
95 static int	ntfs_vget(struct mount *mp, ino_t ino,
96 			       struct vnode **vpp);
97 static int	ntfs_mountfs(struct vnode *, struct mount *,
98 				  struct ntfs_args *, struct proc *);
99 static int	ntfs_vptofh(struct vnode *, struct fid *);
100 
101 static int	ntfs_init(struct vfsconf *);
102 static int	ntfs_fhtovp(struct mount *, struct fid *,
103    			     struct vnode **);
104 static int	ntfs_checkexp(struct mount *, struct mbuf *,
105 			       int *, struct ucred **);
106 static int	ntfs_sysctl(int *, u_int, void *, size_t *, void *,
107  			     size_t, struct proc *);
108 
109 /*
110  * Verify a remote client has export rights and return these rights via.
111  * exflagsp and credanonp.
112  */
113 static int
114 ntfs_checkexp(mp, nam, exflagsp, credanonp)
115 	struct mount *mp;
116 	struct mbuf *nam;
117 	int *exflagsp;
118 	struct ucred **credanonp;
119 {
120 	struct netcred *np;
121 	struct ntfsmount *ntm = VFSTONTFS(mp);
122 
123 	/*
124 	 * Get the export permission structure for this <mp, client> tuple.
125 	 */
126 	np = vfs_export_lookup(mp, &ntm->ntm_export, nam);
127 	if (np == NULL)
128 		return (EACCES);
129 
130 	*exflagsp = np->netc_exflags;
131 	*credanonp = &np->netc_anon;
132 	return (0);
133 }
134 
135 /*ARGSUSED*/
136 static int
137 ntfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
138 	int *name;
139 	u_int namelen;
140 	void *oldp;
141 	size_t *oldlenp;
142 	void *newp;
143 	size_t newlen;
144 	struct proc *p;
145 {
146 	return (EINVAL);
147 }
148 
149 static int
150 ntfs_init (
151 	struct vfsconf *vcp )
152 {
153 	ntfs_nthashinit();
154 	ntfs_toupper_init();
155 	return 0;
156 }
157 
158 static int
159 ntfs_mount(
160 	struct mount *mp,
161 	const char *path,
162 	void *data,
163 	struct nameidata *ndp,
164 	struct proc *p )
165 {
166 	int		err = 0;
167 	struct vnode	*devvp;
168 	struct ntfs_args args;
169 	size_t size;
170 	mode_t amode;
171 	char *fspec = NULL;
172 
173 	/*
174 	 ***
175 	 * Mounting non-root file system or updating a file system
176 	 ***
177 	 */
178 
179 	/* copy in user arguments*/
180 	err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
181 	if (err)
182 		goto error_1;		/* can't get arguments*/
183 
184 	/*
185 	 * If updating, check whether changing from read-only to
186 	 * read/write; if there is no device name, that's all we do.
187 	 */
188 	if (mp->mnt_flag & MNT_UPDATE) {
189 		/* if not updating name...*/
190 		if (args.fspec == 0) {
191 			/*
192 			 * Process export requests.  Jumping to "success"
193 			 * will return the vfs_export() error code.
194 			 */
195 			struct ntfsmount *ntm = VFSTONTFS(mp);
196 			err = vfs_export(mp, &ntm->ntm_export, &args.export_info);
197 			goto success;
198 		}
199 
200 		printf("ntfs_mount(): MNT_UPDATE not supported\n");
201 		err = EINVAL;
202 		goto error_1;
203 	}
204 
205 	/*
206 	 * Not an update, or updating the name: look up the name
207 	 * and verify that it refers to a sensible block device.
208 	 */
209 	fspec = malloc(MNAMELEN, M_MOUNT, M_WAITOK);
210 	err = copyinstr(args.fspec, fspec, MNAMELEN - 1, &size);
211 	if (err)
212 		goto error_1;
213 	disk_map(fspec, fspec, MNAMELEN, DM_OPENBLCK);
214 
215 	NDINIT(ndp, LOOKUP, FOLLOW, UIO_SYSSPACE, fspec, p);
216 	err = namei(ndp);
217 	if (err) {
218 		/* can't get devvp!*/
219 		goto error_1;
220 	}
221 
222 	devvp = ndp->ni_vp;
223 
224 	if (devvp->v_type != VBLK) {
225 		err = ENOTBLK;
226 		goto error_2;
227 	}
228 
229 	if (major(devvp->v_rdev) >= nblkdev) {
230 		err = ENXIO;
231 		goto error_2;
232 	}
233 
234 	/*
235 	 * If we are not root, make sure we have permission to access the
236 	 * requested device.
237 	 */
238 	if (p->p_ucred->cr_uid) {
239 		amode = (mp->mnt_flag & MNT_RDONLY) ? VREAD : (VREAD | VWRITE);
240 		vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
241 		err = VOP_ACCESS(devvp, amode, p->p_ucred, p);
242 		VOP_UNLOCK(devvp, 0, p);
243 		if (err)
244 			goto error_2;
245 	}
246 
247 	if (mp->mnt_flag & MNT_UPDATE) {
248 #if 0
249 		/*
250 		 ********************
251 		 * UPDATE
252 		 ********************
253 		 */
254 
255 		if (devvp != ntmp->um_devvp)
256 			err = EINVAL;	/* needs translation */
257 		else
258 			vrele(devvp);
259 		/*
260 		 * Update device name only on success
261 		 */
262 		if( !err) {
263 			err = set_statfs_info(NULL, UIO_USERSPACE, args.fspec,
264 			    UIO_USERSPACE, mp, p);
265 		}
266 #endif
267 	} else {
268 		/*
269 		 ********************
270 		 * NEW MOUNT
271 		 ********************
272 		 */
273 
274 		/*
275 		 * Since this is a new mount, we want the names for
276 		 * the device and the mount point copied in.  If an
277 		 * error occurs,  the mountpoint is discarded by the
278 		 * upper level code.
279 		 */
280 		/* Save "last mounted on" info for mount point (NULL pad)*/
281 		(void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1,
282 		           &size);
283 		bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
284 
285 		size = strlcpy(mp->mnt_stat.f_mntfromname, fspec, MNAMELEN - 1);
286 		bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
287 		bcopy(&args, &mp->mnt_stat.mount_info.ntfs_args, sizeof(args));
288 		if ( !err) {
289 			err = ntfs_mountfs(devvp, mp, &args, p);
290 		}
291 	}
292 	if (err) {
293 		goto error_2;
294 	}
295 
296 	/*
297 	 * Initialize FS stat information in mount struct; uses both
298 	 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
299 	 *
300 	 * This code is common to root and non-root mounts
301 	 */
302 	(void)VFS_STATFS(mp, &mp->mnt_stat, p);
303 
304 	goto success;
305 
306 
307 error_2:	/* error with devvp held*/
308 
309 	/* release devvp before failing*/
310 	vrele(devvp);
311 
312 error_1:	/* no state to back out*/
313 
314 success:
315 	if (fspec)
316 		free(fspec, M_MOUNT);
317 
318 	return(err);
319 }
320 
321 /*
322  * Common code for mount and mountroot
323  */
324 int
325 ntfs_mountfs(devvp, mp, argsp, p)
326 	struct vnode *devvp;
327 	struct mount *mp;
328 	struct ntfs_args *argsp;
329 	struct proc *p;
330 {
331 	struct buf *bp;
332 	struct ntfsmount *ntmp = NULL;
333 	dev_t dev = devvp->v_rdev;
334 	int error, ronly, ncount, i;
335 	struct vnode *vp;
336 
337 	/*
338 	 * Disallow multiple mounts of the same device.
339 	 * Disallow mounting of a device that is currently in use
340 	 * (except for root, which might share swap device for miniroot).
341 	 * Flush out any old buffers remaining from a previous use.
342 	 */
343 	error = vfs_mountedon(devvp);
344 	if (error)
345 		return (error);
346 	ncount = vcount(devvp);
347 	if (ncount > 1 && devvp != rootvp)
348 		return (EBUSY);
349 	vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
350 	error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0);
351 	VOP_UNLOCK(devvp, 0, p);
352 	if (error)
353 		return (error);
354 
355 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
356 	error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
357 	if (error)
358 		return (error);
359 
360 	bp = NULL;
361 
362 	error = bread(devvp, BBLOCK, BBSIZE, &bp);
363 	if (error)
364 		goto out;
365 	ntmp = malloc(sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
366 	bcopy(bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile));
367 	brelse(bp);
368 	bp = NULL;
369 
370 	if (strncmp(ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
371 		error = EINVAL;
372 		dprintf(("ntfs_mountfs: invalid boot block\n"));
373 		goto out;
374 	}
375 
376 	{
377 		int8_t cpr = ntmp->ntm_mftrecsz;
378 		if( cpr > 0 )
379 			ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
380 		else
381 			ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
382 	}
383 	dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
384 		ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
385 		ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
386 	dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
387 		(u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
388 
389 	ntmp->ntm_mountp = mp;
390 	ntmp->ntm_dev = dev;
391 	ntmp->ntm_devvp = devvp;
392 	ntmp->ntm_uid = argsp->uid;
393 	ntmp->ntm_gid = argsp->gid;
394 	ntmp->ntm_mode = argsp->mode;
395 	ntmp->ntm_flag = argsp->flag;
396 	mp->mnt_data = (qaddr_t) ntmp;
397 
398 	/* set file name encode/decode hooks XXX utf-8 only for now */
399 	ntmp->ntm_wget = ntfs_utf8_wget;
400 	ntmp->ntm_wput = ntfs_utf8_wput;
401 	ntmp->ntm_wcmp = ntfs_utf8_wcmp;
402 
403 	dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
404 		(ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
405 		(ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
406 		ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
407 
408 	/*
409 	 * We read in some system nodes to do not allow
410 	 * reclaim them and to have everytime access to them.
411 	 */
412 	{
413 		int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
414 		for (i=0; i<3; i++) {
415 			error = VFS_VGET(mp, pi[i], &(ntmp->ntm_sysvn[pi[i]]));
416 			if(error)
417 				goto out1;
418 			ntmp->ntm_sysvn[pi[i]]->v_flag |= VSYSTEM;
419 			vref(ntmp->ntm_sysvn[pi[i]]);
420 			vput(ntmp->ntm_sysvn[pi[i]]);
421 		}
422 	}
423 
424 	/* read the Unicode lowercase --> uppercase translation table,
425 	 * if necessary */
426 	if ((error = ntfs_toupper_use(mp, ntmp, p)))
427 		goto out1;
428 
429 	/*
430 	 * Scan $BitMap and count free clusters
431 	 */
432 	error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
433 	if(error)
434 		goto out1;
435 
436 	/*
437 	 * Read and translate to internal format attribute
438 	 * definition file.
439 	 */
440 	{
441 		int num,j;
442 		struct attrdef ad;
443 
444 		/* Open $AttrDef */
445 		error = VFS_VGET(mp, NTFS_ATTRDEFINO, &vp );
446 		if(error)
447 			goto out1;
448 
449 		/* Count valid entries */
450 		for(num = 0; ; num++) {
451 			error = ntfs_readattr(ntmp, VTONT(vp),
452 			    NTFS_A_DATA, NULL, num * sizeof(ad), sizeof(ad),
453 			    &ad, NULL);
454 			if (error)
455 				goto out1;
456 			if (ad.ad_name[0] == 0)
457 				break;
458 		}
459 
460 		/* Alloc memory for attribute definitions */
461 		ntmp->ntm_ad = malloc(num * sizeof(struct ntvattrdef),
462 		    M_NTFSMNT, M_WAITOK);
463 
464 		ntmp->ntm_adnum = num;
465 
466 		/* Read them and translate */
467 		for(i = 0; i < num; i++){
468 			error = ntfs_readattr(ntmp, VTONT(vp),
469 			    NTFS_A_DATA, NULL, i * sizeof(ad), sizeof(ad),
470 			    &ad, NULL);
471 			if (error)
472 				goto out1;
473 			j = 0;
474 			do {
475 				ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
476 			} while(ad.ad_name[j++]);
477 			ntmp->ntm_ad[i].ad_namelen = j - 1;
478 			ntmp->ntm_ad[i].ad_type = ad.ad_type;
479 		}
480 
481 		vput(vp);
482 	}
483 
484 	mp->mnt_stat.f_fsid.val[0] = dev;
485 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
486 	mp->mnt_maxsymlinklen = 0;
487 	mp->mnt_flag |= MNT_LOCAL;
488 	devvp->v_specmountpoint = mp;
489 	return (0);
490 
491 out1:
492 	for (i = 0; i < NTFS_SYSNODESNUM; i++)
493 		if (ntmp->ntm_sysvn[i])
494 			vrele(ntmp->ntm_sysvn[i]);
495 
496 	if (vflush(mp,NULLVP,0))
497 		dprintf(("ntfs_mountfs: vflush failed\n"));
498 
499 out:
500 	devvp->v_specmountpoint = NULL;
501 	if (bp)
502 		brelse(bp);
503 
504 	if (ntmp != NULL) {
505 		if (ntmp->ntm_ad != NULL)
506 			free(ntmp->ntm_ad, M_NTFSMNT);
507 		free(ntmp, M_NTFSMNT);
508 		mp->mnt_data = NULL;
509 	}
510 
511 	/* lock the device vnode before calling VOP_CLOSE() */
512 	vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
513 	(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
514 	VOP_UNLOCK(devvp, 0, p);
515 
516 	return (error);
517 }
518 
519 static int
520 ntfs_start (
521 	struct mount *mp,
522 	int flags,
523 	struct proc *p )
524 {
525 	return (0);
526 }
527 
528 static int
529 ntfs_unmount(
530 	struct mount *mp,
531 	int mntflags,
532 	struct proc *p)
533 {
534 	struct ntfsmount *ntmp;
535 	int error, ronly = 0, flags, i;
536 
537 	dprintf(("ntfs_unmount: unmounting...\n"));
538 	ntmp = VFSTONTFS(mp);
539 
540 	flags = 0;
541 	if(mntflags & MNT_FORCE)
542 		flags |= FORCECLOSE;
543 
544 	dprintf(("ntfs_unmount: vflushing...\n"));
545 	error = vflush(mp,NULLVP,flags | SKIPSYSTEM);
546 	if (error) {
547 		dprintf(("ntfs_unmount: vflush failed: %d\n",error));
548 		return (error);
549 	}
550 
551 	/* Check if only system vnodes are rest */
552 	for(i=0;i<NTFS_SYSNODESNUM;i++)
553 		 if((ntmp->ntm_sysvn[i]) &&
554 		    (ntmp->ntm_sysvn[i]->v_usecount > 1)) return (EBUSY);
555 
556 	/* Dereference all system vnodes */
557 	for(i=0;i<NTFS_SYSNODESNUM;i++)
558 		 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
559 
560 	/* vflush system vnodes */
561 	error = vflush(mp,NULLVP,flags);
562 	if (error) {
563 		/* XXX should this be panic() ? */
564 		printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
565 	}
566 
567 	/* Check if the type of device node isn't VBAD before
568 	 * touching v_specinfo.  If the device vnode is revoked, the
569 	 * field is NULL and touching it causes null pointer derefercence.
570 	 */
571 	if (ntmp->ntm_devvp->v_type != VBAD)
572 		ntmp->ntm_devvp->v_specmountpoint = NULL;
573 
574 	/* lock the device vnode before calling VOP_CLOSE() */
575 	VOP_LOCK(ntmp->ntm_devvp, LK_EXCLUSIVE | LK_RETRY, p);
576 	vinvalbuf(ntmp->ntm_devvp, V_SAVE, NOCRED, p, 0, 0);
577 
578 	error = VOP_CLOSE(ntmp->ntm_devvp, ronly ? FREAD : FREAD|FWRITE,
579 		NOCRED, p);
580 
581 	vput(ntmp->ntm_devvp);
582 
583 	/* free the toupper table, if this has been last mounted ntfs volume */
584 	ntfs_toupper_unuse(p);
585 
586 	dprintf(("ntfs_unmount: freeing memory...\n"));
587 	mp->mnt_data = NULL;
588 	mp->mnt_flag &= ~MNT_LOCAL;
589 	free(ntmp->ntm_ad, M_NTFSMNT);
590 	free(ntmp, M_NTFSMNT);
591 	return (error);
592 }
593 
594 static int
595 ntfs_root(
596 	struct mount *mp,
597 	struct vnode **vpp )
598 {
599 	struct vnode *nvp;
600 	int error = 0;
601 
602 	dprintf(("ntfs_root(): sysvn: %p\n",
603 		VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
604 	error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, &nvp);
605 	if(error) {
606 		printf("ntfs_root: VFS_VGET failed: %d\n",error);
607 		return (error);
608 	}
609 
610 	*vpp = nvp;
611 	return (0);
612 }
613 
614 /*
615  * Do operations associated with quotas, not supported
616  */
617 /* ARGSUSED */
618 static int
619 ntfs_quotactl (
620 	struct mount *mp,
621 	int cmds,
622 	uid_t uid,
623 	caddr_t arg,
624 	struct proc *p)
625 {
626 
627 	return EOPNOTSUPP;
628 }
629 
630 int
631 ntfs_calccfree(
632 	struct ntfsmount *ntmp,
633 	cn_t *cfreep)
634 {
635 	struct vnode *vp;
636 	u_int8_t *tmp;
637 	int j, error;
638 	cn_t cfree = 0;
639 	size_t bmsize, i;
640 
641 	vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
642 
643 	bmsize = VTOF(vp)->f_size;
644 
645 	tmp = malloc(bmsize, M_TEMP, M_WAITOK);
646 
647 	error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
648 			       0, bmsize, tmp, NULL);
649 	if (error)
650 		goto out;
651 
652 	for(i=0;i<bmsize;i++)
653 		for(j=0;j<8;j++)
654 			if(~tmp[i] & (1 << j)) cfree++;
655 	*cfreep = cfree;
656 
657     out:
658 	free(tmp, M_TEMP);
659 	return(error);
660 }
661 
662 static int
663 ntfs_statfs(
664 	struct mount *mp,
665 	struct statfs *sbp,
666 	struct proc *p)
667 {
668 	struct ntfsmount *ntmp = VFSTONTFS(mp);
669 	u_int64_t mftallocated;
670 
671 	dprintf(("ntfs_statfs():\n"));
672 
673 	mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
674 
675 	sbp->f_bsize = ntmp->ntm_bps;
676 	sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
677 	sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
678 	sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
679 	sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
680 	sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
681 		       sbp->f_ffree;
682 	sbp->f_flags = mp->mnt_flag;
683 	if (sbp != &mp->mnt_stat) {
684 		bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
685 		bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
686 		bcopy(&mp->mnt_stat.mount_info.msdosfs_args,
687 		    &sbp->mount_info.msdosfs_args, sizeof(struct msdosfs_args));
688 	}
689 	strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
690 
691 	return (0);
692 }
693 
694 static int
695 ntfs_sync (
696 	struct mount *mp,
697 	int waitfor,
698 	struct ucred *cred,
699 	struct proc *p)
700 {
701 	/*dprintf(("ntfs_sync():\n"));*/
702 	return (0);
703 }
704 
705 /*ARGSUSED*/
706 static int
707 ntfs_fhtovp(
708 	struct mount *mp,
709 	struct fid *fhp,
710 	struct vnode **vpp)
711 {
712 	struct ntfid *ntfhp = (struct ntfid *)fhp;
713 	int error;
714 
715 	ddprintf(("ntfs_fhtovp(): %s: %d\n", mp->mnt_stat.f_mntonname,
716 		ntfhp->ntfid_ino));
717 
718 	error = ntfs_vgetex(mp, ntfhp->ntfid_ino, ntfhp->ntfid_attr, NULL,
719 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
720 	if (error != 0) {
721 		*vpp = NULLVP;
722 		return (error);
723 	}
724 
725 	/* XXX as unlink/rmdir/mkdir/creat are not currently possible
726 	 * with NTFS, we don't need to check anything else for now */
727 	return (0);
728 }
729 
730 static int
731 ntfs_vptofh(
732 	struct vnode *vp,
733 	struct fid *fhp)
734 {
735 	struct ntnode *ntp;
736 	struct ntfid *ntfhp;
737 	struct fnode *fn;
738 
739 	ddprintf(("ntfs_fhtovp(): %s: %p\n", vp->v_mount->mnt_stat.f_mntonname,
740 		vp));
741 
742 	fn = VTOF(vp);
743 	ntp = VTONT(vp);
744 	ntfhp = (struct ntfid *)fhp;
745 	ntfhp->ntfid_len = sizeof(struct ntfid);
746 	ntfhp->ntfid_ino = ntp->i_number;
747 	ntfhp->ntfid_attr = fn->f_attrtype;
748 #ifdef notyet
749 	ntfhp->ntfid_gen = ntp->i_gen;
750 #endif
751 	return (0);
752 }
753 
754 int
755 ntfs_vgetex(
756 	struct mount *mp,
757 	ino_t ino,
758 	u_int32_t attrtype,
759 	char *attrname,
760 	u_long lkflags,
761 	u_long flags,
762 	struct proc *p,
763 	struct vnode **vpp)
764 {
765 	int error;
766 	struct ntfsmount *ntmp;
767 	struct ntnode *ip;
768 	struct fnode *fp;
769 	struct vnode *vp;
770 	enum vtype f_type;
771 
772 	dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
773 		ino, attrtype, attrname?attrname:"", (u_long)lkflags,
774 		(u_long)flags ));
775 
776 	ntmp = VFSTONTFS(mp);
777 	*vpp = NULL;
778 
779 	/* Get ntnode */
780 	error = ntfs_ntlookup(ntmp, ino, &ip, p);
781 	if (error) {
782 		printf("ntfs_vget: ntfs_ntget failed\n");
783 		return (error);
784 	}
785 
786 	/* It may be not initialized fully, so force load it */
787 	if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
788 		error = ntfs_loadntnode(ntmp, ip);
789 		if(error) {
790 			printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
791 			       ip->i_number);
792 			ntfs_ntput(ip, p);
793 
794 			return (error);
795 		}
796 	}
797 
798 	error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
799 	if (error) {
800 		printf("ntfs_vget: ntfs_fget failed\n");
801 		ntfs_ntput(ip, p);
802 
803 		return (error);
804 	}
805 
806 	if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
807 		if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
808 		    (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
809 			f_type = VDIR;
810 		} else if (flags & VG_EXT) {
811 			f_type = VNON;
812 			fp->f_size = fp->f_allocated = 0;
813 		} else {
814 			f_type = VREG;
815 
816 			error = ntfs_filesize(ntmp, fp,
817 					      &fp->f_size, &fp->f_allocated);
818 			if (error) {
819 				ntfs_ntput(ip, p);
820 
821 				return (error);
822 			}
823 		}
824 
825 		fp->f_flag |= FN_VALID;
826 	}
827 
828 	/*
829 	 * We may be calling vget() now. To avoid potential deadlock, we need
830 	 * to release ntnode lock, since due to locking order vnode
831 	 * lock has to be acquired first.
832 	 * ntfs_fget() bumped ntnode usecount, so ntnode won't be recycled
833 	 * prematurely.
834 	 */
835 	ntfs_ntput(ip, p);
836 
837 	if (FTOV(fp)) {
838 		/* vget() returns error if the vnode has been recycled */
839 		if (vget(FTOV(fp), lkflags, p) == 0) {
840 			*vpp = FTOV(fp);
841 			return (0);
842 		}
843 	}
844 
845 	error = getnewvnode(VT_NTFS, ntmp->ntm_mountp, &ntfs_vops, &vp);
846 	if(error) {
847 		ntfs_frele(fp);
848 		ntfs_ntput(ip, p);
849 
850 		return (error);
851 	}
852 	dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
853 
854 	fp->f_vp = vp;
855 	vp->v_data = fp;
856 	vp->v_type = f_type;
857 
858 	if (ino == NTFS_ROOTINO)
859 		vp->v_flag |= VROOT;
860 
861 	if (lkflags & LK_TYPE_MASK) {
862 		error = vn_lock(vp, lkflags, p);
863 		if (error) {
864 			vput(vp);
865 			return (error);
866 		}
867 	}
868 
869 	*vpp = vp;
870 	return (0);
871 }
872 
873 static int
874 ntfs_vget(
875 	struct mount *mp,
876 	ino_t ino,
877 	struct vnode **vpp)
878 {
879 	return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL,
880 			LK_EXCLUSIVE | LK_RETRY, 0, curproc, vpp); /* XXX */
881 }
882 
883 const struct vfsops ntfs_vfsops = {
884 	ntfs_mount,
885 	ntfs_start,
886 	ntfs_unmount,
887 	ntfs_root,
888 	ntfs_quotactl,
889 	ntfs_statfs,
890 	ntfs_sync,
891 	ntfs_vget,
892 	ntfs_fhtovp,
893 	ntfs_vptofh,
894 	ntfs_init,
895 	ntfs_sysctl,
896 	ntfs_checkexp,
897 };
898