1 /* $NetBSD: ntfs_vfsops.c,v 1.29.2.1 2005/08/24 18:43:38 riz 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 1.29.2.1 2005/08/24 18:43:38 riz 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 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: %d\n",
897 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 #endif
Cache object: c91d2a8c326f3d2fe982065208a829c7
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