xref: /dragonfly/sys/vfs/hpfs/hpfs_vfsops.c (revision 611395e5)
1 /*-
2  * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD: src/sys/fs/hpfs/hpfs_vfsops.c,v 1.3.2.2 2001/12/25 01:44:45 dillon Exp $
27  * $DragonFly: src/sys/vfs/hpfs/hpfs_vfsops.c,v 1.24 2004/12/17 00:18:22 dillon Exp $
28  */
29 
30 
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/nlookup.h>
34 #include <sys/conf.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/fcntl.h>
41 #include <sys/malloc.h>
42 
43 #include <vm/vm.h>
44 #include <vm/vm_param.h>
45 #if defined(__NetBSD__)
46 #include <vm/vm_prot.h>
47 #endif
48 #include <vm/vm_page.h>
49 #include <vm/vm_object.h>
50 #include <vm/vm_extern.h>
51 #include <sys/buf2.h>
52 
53 #if defined(__NetBSD__)
54 #include <miscfs/specfs/specdev.h>
55 #endif
56 
57 #include "hpfs.h"
58 #include "hpfsmount.h"
59 #include "hpfs_subr.h"
60 
61 extern struct vnodeopv_entry_desc hpfs_vnodeop_entries[];
62 
63 #if defined(__DragonFly__)
64 MALLOC_DEFINE(M_HPFSMNT, "HPFS mount", "HPFS mount structure");
65 MALLOC_DEFINE(M_HPFSNO, "HPFS node", "HPFS node structure");
66 #endif
67 
68 static int	hpfs_root (struct mount *, struct vnode **);
69 static int	hpfs_statfs (struct mount *, struct statfs *,
70 				 struct thread *);
71 static int	hpfs_unmount (struct mount *, int, struct thread *);
72 static int	hpfs_vget (struct mount *mp, ino_t ino,
73 			       struct vnode **vpp);
74 static int	hpfs_mountfs (struct vnode *, struct mount *,
75 				  struct hpfs_args *, struct thread *);
76 static int	hpfs_vptofh (struct vnode *, struct fid *);
77 static int	hpfs_fhtovp (struct mount *, struct fid *,
78 				 struct vnode **);
79 
80 #if !defined(__DragonFly__)
81 static int	hpfs_quotactl (struct mount *, int, uid_t, caddr_t,
82 				   struct proc *);
83 static int	hpfs_start (struct mount *, int, struct proc *);
84 static int	hpfs_sync (struct mount *, int, struct ucred *,
85 			       struct proc *);
86 #endif
87 
88 #if defined(__DragonFly__)
89 struct sockaddr;
90 static int	hpfs_mount (struct mount *, char *, caddr_t, struct thread *);
91 static int	hpfs_init (struct vfsconf *);
92 static int	hpfs_checkexp (struct mount *, struct sockaddr *,
93 				   int *, struct ucred **);
94 #else /* defined(__NetBSD__) */
95 static int	hpfs_mount (struct mount *, const char *, void *,
96 				struct nlookupdata *, struct proc *);
97 static void	hpfs_init (void);
98 static int	hpfs_mountroot (void);
99 static int	hpfs_sysctl (int *, u_int, void *, size_t *, void *,
100 				 size_t, struct proc *);
101 static int	hpfs_checkexp (struct mount *, struct mbuf *,
102 				   int *, struct ucred **);
103 #endif
104 
105 /*ARGSUSED*/
106 static int
107 hpfs_checkexp(struct mount *mp,
108 #if defined(__DragonFly__)
109 	      struct sockaddr *nam,
110 #else /* defined(__NetBSD__) */
111 	      struct mbuf *nam,
112 #endif
113 	      int *exflagsp, struct ucred **credanonp)
114 {
115 	struct netcred *np;
116 	struct hpfsmount *hpm = VFSTOHPFS(mp);
117 
118 	/*
119 	 * Get the export permission structure for this <mp, client> tuple.
120 	 */
121 	np = vfs_export_lookup(mp, &hpm->hpm_export, nam);
122 	if (np == NULL)
123 		return (EACCES);
124 
125 	*exflagsp = np->netc_exflags;
126 	*credanonp = &np->netc_anon;
127 	return (0);
128 }
129 
130 #if !defined(__DragonFly__)
131 /*ARGSUSED*/
132 static int
133 hpfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
134 	    size_t newlen, struct thread *td)
135 {
136 	return (EINVAL);
137 }
138 
139 static int
140 hpfs_mountroot(void)
141 {
142 	return (EINVAL);
143 }
144 #endif
145 
146 #if defined(__DragonFly__)
147 static int
148 hpfs_init(struct vfsconf *vcp)
149 #else /* defined(__NetBSD__) */
150 static void
151 hpfs_init(void)
152 #endif
153 {
154 	dprintf(("hpfs_init():\n"));
155 
156 	hpfs_hphashinit();
157 #if defined(__DragonFly__)
158 	return 0;
159 #endif
160 }
161 
162 static int
163 hpfs_mount(struct mount *mp,
164 #if defined(__DragonFly__)
165 	   char *path, caddr_t data,
166 #else /* defined(__NetBSD__) */
167 	   const char *path, void *data,
168 #endif
169 	   struct thread *td)
170 {
171 	u_int		size;
172 	int		error;
173 	struct vnode	*devvp;
174 	struct hpfs_args args;
175 	struct hpfsmount *hpmp = 0;
176 	struct nlookupdata nd;
177 
178 	dprintf(("hpfs_mount():\n"));
179 	/*
180 	 ***
181 	 * Mounting non-root file system or updating a file system
182 	 ***
183 	 */
184 
185 	/* copy in user arguments*/
186 	error = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
187 	if (error)
188 		goto error_1;		/* can't get arguments*/
189 
190 	/*
191 	 * If updating, check whether changing from read-only to
192 	 * read/write; if there is no device name, that's all we do.
193 	 */
194 	if (mp->mnt_flag & MNT_UPDATE) {
195 		dprintf(("hpfs_mount: MNT_UPDATE: "));
196 
197 		hpmp = VFSTOHPFS(mp);
198 
199 		if (args.fspec == 0) {
200 			dprintf(("export 0x%x\n",args.export.ex_flags));
201 			error = vfs_export(mp, &hpmp->hpm_export, &args.export);
202 			if (error) {
203 				printf("hpfs_mount: vfs_export failed %d\n",
204 					error);
205 			}
206 			goto success;
207 		} else {
208 			dprintf(("name [FAILED]\n"));
209 			error = EINVAL;
210 			goto success;
211 		}
212 		dprintf(("\n"));
213 	}
214 
215 	/*
216 	 * Not an update, or updating the name: look up the name
217 	 * and verify that it refers to a sensible block device.
218 	 */
219 	devvp = NULL;
220 	error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW);
221 	if (error == 0)
222 		error = nlookup(&nd);
223 	if (error == 0)
224 		error = cache_vref(nd.nl_ncp, nd.nl_cred, &devvp);
225 	nlookup_done(&nd);
226 	if (error)
227 		goto error_1;
228 
229 #if defined(__DragonFly__)
230 	if (!vn_isdisk(devvp, &error))
231 		goto error_2;
232 #else /* defined(__NetBSD__) */
233 	if (devvp->v_type != VBLK) {
234 		error = ENOTBLK;
235 		goto error_2;
236 	}
237 	if (umajor(devvp->v_udev) >= nblkdev) {
238 		error = ENXIO;
239 		goto error_2;
240 	}
241 #endif
242 
243 	/*
244 	 ********************
245 	 * NEW MOUNT
246 	 ********************
247 	 */
248 
249 	/*
250 	 * Since this is a new mount, we want the names for
251 	 * the device and the mount point copied in.  If an
252 	 * error occurs,  the mountpoint is discarded by the
253 	 * upper level code.
254 	 */
255 	/* Save "last mounted on" info for mount point (NULL pad)*/
256 	copyinstr(	path,				/* mount point*/
257 			mp->mnt_stat.f_mntonname,	/* save area*/
258 			MNAMELEN - 1,			/* max size*/
259 			&size);				/* real size*/
260 	bzero( mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
261 
262 	/* Save "mounted from" info for mount point (NULL pad)*/
263 	copyinstr(	args.fspec,			/* device name*/
264 			mp->mnt_stat.f_mntfromname,	/* save area*/
265 			MNAMELEN - 1,			/* max size*/
266 			&size);				/* real size*/
267 	bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
268 
269 	error = hpfs_mountfs(devvp, mp, &args, td);
270 	if (error)
271 		goto error_2;
272 
273 	/*
274 	 * Initialize FS stat information in mount struct; uses both
275 	 * mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
276 	 *
277 	 * This code is common to root and non-root mounts
278 	 */
279 	VFS_STATFS(mp, &mp->mnt_stat, td);
280 	return (error);
281 
282 error_2:	/* error with devvp held*/
283 
284 	/* release devvp before failing*/
285 	vrele(devvp);
286 
287 error_1:	/* no state to back out*/
288 
289 success:
290 	return (error);
291 }
292 
293 /*
294  * Common code for mount and mountroot
295  */
296 int
297 hpfs_mountfs(struct vnode *devvp, struct mount *mp, struct hpfs_args *argsp,
298 	     struct thread *td)
299 {
300 	int error, ncount, ronly;
301 	struct sublock *sup;
302 	struct spblock *spp;
303 	struct hpfsmount *hpmp;
304 	struct buf *bp = NULL;
305 	struct vnode *vp;
306 	dev_t dev;
307 
308 	dprintf(("hpfs_mountfs():\n"));
309 	/*
310 	 * Disallow multiple mounts of the same device.
311 	 * Disallow mounting of a device that is currently in use
312 	 * (except for root, which might share swap device for miniroot).
313 	 * Flush out any old buffers remaining from a previous use.
314 	 */
315 	error = vfs_mountedon(devvp);
316 	if (error)
317 		return (error);
318 	ncount = count_udev(devvp->v_udev);
319 #if defined(__DragonFly__)
320 	if (devvp->v_object)
321 		ncount -= 1;
322 #endif
323 	if (ncount > 0)
324 		return (EBUSY);
325 
326 #if defined(__DragonFly__)
327 	VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
328 	error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
329 	VOP__UNLOCK(devvp, 0, td);
330 #else
331 	error = vinvalbuf(devvp, V_SAVE, td, 0, 0);
332 #endif
333 	if (error)
334 		return (error);
335 
336 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
337 	VN_LOCK(devvp, LK_EXCLUSIVE | LK_RETRY, td);
338 	error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, NULL, td);
339 	VOP__UNLOCK(devvp, 0, td);
340 	if (error)
341 		return (error);
342 	dev = devvp->v_rdev;
343 
344 	/*
345 	 * Do actual mount
346 	 */
347 	hpmp = malloc(sizeof(struct hpfsmount), M_HPFSMNT, M_WAITOK);
348 	bzero(hpmp, sizeof(struct hpfsmount));
349 
350 	/* Read in SuperBlock */
351 	error = bread(devvp, SUBLOCK, SUSIZE, &bp);
352 	if (error)
353 		goto failed;
354 	bcopy(bp->b_data, &hpmp->hpm_su, sizeof(struct sublock));
355 	brelse(bp); bp = NULL;
356 
357 	/* Read in SpareBlock */
358 	error = bread(devvp, SPBLOCK, SPSIZE, &bp);
359 	if (error)
360 		goto failed;
361 	bcopy(bp->b_data, &hpmp->hpm_sp, sizeof(struct spblock));
362 	brelse(bp); bp = NULL;
363 
364 	sup = &hpmp->hpm_su;
365 	spp = &hpmp->hpm_sp;
366 
367 	/* Check magic */
368 	if (sup->su_magic != SU_MAGIC) {
369 		printf("hpfs_mountfs: SuperBlock MAGIC DOESN'T MATCH\n");
370 		error = EINVAL;
371 		goto failed;
372 	}
373 	if (spp->sp_magic != SP_MAGIC) {
374 		printf("hpfs_mountfs: SpareBlock MAGIC DOESN'T MATCH\n");
375 		error = EINVAL;
376 		goto failed;
377 	}
378 
379 	mp->mnt_data = (qaddr_t)hpmp;
380 	hpmp->hpm_devvp = devvp;
381 	hpmp->hpm_dev = dev;
382 	hpmp->hpm_mp = mp;
383 	hpmp->hpm_uid = argsp->uid;
384 	hpmp->hpm_gid = argsp->gid;
385 	hpmp->hpm_mode = argsp->mode;
386 
387 	error = hpfs_bminit(hpmp);
388 	if (error)
389 		goto failed;
390 
391 	error = hpfs_cpinit(hpmp, argsp);
392 	if (error) {
393 		hpfs_bmdeinit(hpmp);
394 		goto failed;
395 	}
396 	vfs_add_vnodeops(mp, &mp->mnt_vn_norm_ops, hpfs_vnodeop_entries);
397 
398 	error = hpfs_root(mp, &vp);
399 	if (error) {
400 		hpfs_cpdeinit(hpmp);
401 		hpfs_bmdeinit(hpmp);
402 		goto failed;
403 	}
404 
405 	vput(vp);
406 
407 #if defined(__DragonFly__)
408 	mp->mnt_stat.f_fsid.val[0] = (long)dev2udev(dev);
409 	mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
410 #else
411 	mp->mnt_stat.f_fsid.val[0] = (long)dev;
412 	mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_HPFS);
413 #endif
414 	mp->mnt_maxsymlinklen = 0;
415 	mp->mnt_flag |= MNT_LOCAL;
416 	dev->si_mountpoint = mp;
417 	return (0);
418 
419 failed:
420 	if (bp)
421 		brelse (bp);
422 	mp->mnt_data = (qaddr_t)NULL;
423 #if defined(__DragonFly__)
424 	dev->si_mountpoint = NULL;
425 #else
426 	devvp->v_specflags &= ~SI_MOUNTEDON;
427 #endif
428 	(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, td);
429 	return (error);
430 }
431 
432 #if !defined(__DragonFly__)
433 static int
434 hpfs_start(struct mount *mp, int flags, struct thread *td)
435 {
436 	return (0);
437 }
438 #endif
439 
440 static int
441 hpfs_unmount(struct mount *mp, int mntflags, struct thread *td)
442 {
443 	int error, flags, ronly;
444 	struct hpfsmount *hpmp = VFSTOHPFS(mp);
445 
446 	dprintf(("hpfs_unmount():\n"));
447 
448 	ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
449 
450 	flags = 0;
451 	if(mntflags & MNT_FORCE)
452 		flags |= FORCECLOSE;
453 
454 	dprintf(("hpfs_unmount: vflushing...\n"));
455 
456 	error = vflush(mp, 0, flags);
457 	if (error) {
458 		printf("hpfs_unmount: vflush failed: %d\n",error);
459 		return (error);
460 	}
461 
462 #if defined(__DragonFly__)
463 	hpmp->hpm_devvp->v_rdev->si_mountpoint = NULL;
464 #else
465 	hpmp->hpm_devvp->v_specflags &= ~SI_MOUNTEDON;
466 #endif
467 
468 	vinvalbuf(hpmp->hpm_devvp, V_SAVE, td, 0, 0);
469 	error = VOP_CLOSE(hpmp->hpm_devvp, ronly ? FREAD : FREAD|FWRITE, td);
470 
471 	vrele(hpmp->hpm_devvp);
472 
473 	dprintf(("hpfs_umount: freeing memory...\n"));
474 	hpfs_cpdeinit(hpmp);
475 	hpfs_bmdeinit(hpmp);
476 	mp->mnt_data = (qaddr_t)0;
477 	mp->mnt_flag &= ~MNT_LOCAL;
478 	FREE(hpmp, M_HPFSMNT);
479 
480 	return (0);
481 }
482 
483 static int
484 hpfs_root(struct mount *mp, struct vnode **vpp)
485 {
486 	int error = 0;
487 	struct hpfsmount *hpmp = VFSTOHPFS(mp);
488 
489 	dprintf(("hpfs_root():\n"));
490 	error = VFS_VGET(mp, (ino_t)hpmp->hpm_su.su_rootfno, vpp);
491 	if(error) {
492 		printf("hpfs_root: VFS_VGET failed: %d\n",error);
493 		return (error);
494 	}
495 
496 	return (error);
497 }
498 
499 static int
500 hpfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
501 {
502 	struct hpfsmount *hpmp = VFSTOHPFS(mp);
503 
504 	dprintf(("hpfs_statfs(): HPFS%d.%d\n",
505 		hpmp->hpm_su.su_hpfsver, hpmp->hpm_su.su_fnctver));
506 
507 #if defined(__DragonFly__)
508 	sbp->f_type = mp->mnt_vfc->vfc_typenum;
509 #else /* defined(__NetBSD__) */
510 	sbp->f_type = 0;
511 #endif
512 	sbp->f_bsize = DEV_BSIZE;
513 	sbp->f_iosize = DEV_BSIZE;
514 	sbp->f_blocks = hpmp->hpm_su.su_btotal;
515 	sbp->f_bfree = sbp->f_bavail = hpmp->hpm_bavail;
516 	sbp->f_ffree = 0;
517 	sbp->f_files = 0;
518 	if (sbp != &mp->mnt_stat) {
519 		bcopy((caddr_t)mp->mnt_stat.f_mntonname,
520 			(caddr_t)&sbp->f_mntonname[0], MNAMELEN);
521 		bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
522 			(caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
523 	}
524 	sbp->f_flags = mp->mnt_flag;
525 
526 	return (0);
527 }
528 
529 #if !defined(__DragonFly__)
530 static int
531 hpfs_sync(struct mount *mp, int waitfor, struct ucred *cred,
532 	  struct thread *td)
533 {
534 	return (0);
535 }
536 
537 static int
538 hpfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
539 	      struct thread *td)
540 {
541 	printf("hpfs_quotactl():\n");
542 	return (EOPNOTSUPP);
543 }
544 #endif
545 
546 /*ARGSUSED*/
547 static int
548 hpfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
549 {
550 	struct vnode *nvp;
551 	struct hpfid *hpfhp = (struct hpfid *)fhp;
552 	int error;
553 
554 	if ((error = VFS_VGET(mp, hpfhp->hpfid_ino, &nvp)) != 0) {
555 		*vpp = NULLVP;
556 		return (error);
557 	}
558 	/* XXX as unlink/rmdir/mkdir/creat are not currently possible
559 	 * with HPFS, we don't need to check anything else for now */
560 	*vpp = nvp;
561 
562 	return (0);
563 }
564 
565 static int
566 hpfs_vptofh(struct vnode *vp, struct fid *fhp)
567 {
568 	struct hpfsnode *hpp;
569 	struct hpfid *hpfhp;
570 
571 	hpp = VTOHP(vp);
572 	hpfhp = (struct hpfid *)fhp;
573 	hpfhp->hpfid_len = sizeof(struct hpfid);
574 	hpfhp->hpfid_ino = hpp->h_no;
575 	/* hpfhp->hpfid_gen = hpp->h_gen; */
576 	return (0);
577 }
578 
579 static int
580 hpfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
581 {
582 	struct hpfsmount *hpmp = VFSTOHPFS(mp);
583 	struct vnode *vp;
584 	struct hpfsnode *hp;
585 	struct buf *bp;
586 	struct thread *td = curthread;	/* XXX */
587 	int error;
588 
589 	dprintf(("hpfs_vget(0x%x): ",ino));
590 
591 	*vpp = NULL;
592 	hp = NULL;
593 	vp = NULL;
594 
595 	if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
596 		dprintf(("hashed\n"));
597 		return (0);
598 	}
599 
600 	/*
601 	 * We have to lock node creation for a while,
602 	 * but then we have to call getnewvnode(),
603 	 * this may cause hpfs_reclaim() to be called,
604 	 * this may need to VOP_VGET() parent dir for
605 	 * update reasons, and if parent is not in
606 	 * hash, we have to lock node creation...
607 	 * To solve this, we MALLOC, getnewvnode and init while
608 	 * not locked (probability of node appearence
609 	 * at that time is little, and anyway - we'll
610 	 * check for it).
611 	 */
612 	MALLOC(hp, struct hpfsnode *, sizeof(struct hpfsnode),
613 		M_HPFSNO, M_WAITOK);
614 
615 	error = getnewvnode(VT_HPFS, hpmp->hpm_mp, &vp, VLKTIMEOUT, 0);
616 	if (error) {
617 		printf("hpfs_vget: can't get new vnode\n");
618 		FREE(hp, M_HPFSNO);
619 		return (error);
620 	}
621 
622 	dprintf(("prenew "));
623 
624 	vp->v_data = hp;
625 
626 	if (ino == (ino_t)hpmp->hpm_su.su_rootfno)
627 		vp->v_flag |= VROOT;
628 
629 	lwkt_token_init(&hp->h_interlock);
630 
631 	hp->h_flag = H_INVAL;
632 	hp->h_vp = vp;
633 	hp->h_hpmp = hpmp;
634 	hp->h_no = ino;
635 	hp->h_dev = hpmp->hpm_dev;
636 	hp->h_uid = hpmp->hpm_uid;
637 	hp->h_gid = hpmp->hpm_uid;
638 	hp->h_mode = hpmp->hpm_mode;
639 	hp->h_devvp = hpmp->hpm_devvp;
640 	vref(hp->h_devvp);
641 
642 	do {
643 		if ((*vpp = hpfs_hphashvget(hpmp->hpm_dev, ino, td)) != NULL) {
644 			dprintf(("hashed2\n"));
645 			vx_put(vp);
646 			return (0);
647 		}
648 	} while(LOCKMGR(&hpfs_hphash_lock,LK_EXCLUSIVE|LK_SLEEPFAIL,NULL,NULL));
649 
650 	hpfs_hphashins(hp);
651 
652 	LOCKMGR(&hpfs_hphash_lock, LK_RELEASE, NULL, NULL);
653 
654 	error = bread(hpmp->hpm_devvp, ino, FNODESIZE, &bp);
655 	if (error) {
656 		printf("hpfs_vget: can't read ino %d\n",ino);
657 		vx_put(vp);
658 		return (error);
659 	}
660 	bcopy(bp->b_data, &hp->h_fn, sizeof(struct fnode));
661 	brelse(bp);
662 
663 	if (hp->h_fn.fn_magic != FN_MAGIC) {
664 		printf("hpfs_vget: MAGIC DOESN'T MATCH\n");
665 		vx_put(vp);
666 		return (EINVAL);
667 	}
668 
669 	vp->v_type = hp->h_fn.fn_flag ? VDIR:VREG;
670 	hp->h_flag &= ~H_INVAL;
671 
672 	/* Return the locked and refd vnode */
673 	*vpp = vp;
674 
675 	return (0);
676 }
677 
678 #if defined(__DragonFly__)
679 static struct vfsops hpfs_vfsops = {
680 	hpfs_mount,
681 	vfs_stdstart,
682 	hpfs_unmount,
683 	hpfs_root,
684 	vfs_stdquotactl,
685 	hpfs_statfs,
686 	vfs_stdsync,
687 	hpfs_vget,
688 	hpfs_fhtovp,
689 	hpfs_checkexp,
690 	hpfs_vptofh,
691 	hpfs_init,
692 	hpfs_hphash_uninit,
693 	vfs_stdextattrctl,
694 };
695 VFS_SET(hpfs_vfsops, hpfs, 0);
696 #else /* defined(__NetBSD__) */
697 extern struct vnodeopv_desc hpfs_vnodeop_opv_desc;
698 
699 struct vnodeopv_desc *hpfs_vnodeopv_descs[] = {
700 	&hpfs_vnodeop_opv_desc,
701 	NULL,
702 };
703 
704 struct vfsops hpfs_vfsops = {
705 	MOUNT_HPFS,
706 	hpfs_mount,
707 	hpfs_start,
708 	hpfs_unmount,
709 	hpfs_root,
710 	hpfs_quotactl,
711 	hpfs_statfs,
712 	hpfs_sync,
713 	hpfs_vget,
714 	hpfs_fhtovp,
715 	hpfs_vptofh,
716 	hpfs_init,
717 	hpfs_sysctl,
718 	hpfs_mountroot,
719 	hpfs_checkexp,
720 	hpfs_vnodeopv_descs,
721 };
722 #endif
723