1 /* $NetBSD: ntfs_vfsops.c,v 1.23 1999/11/15 19:38:14 jdolecek 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 * $FreeBSD: releng/9.0/sys/fs/ntfs/ntfs_vfsops.c 222167 2011-05-22 01:07:54Z rmacklem $
29 */
30
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/namei.h>
35 #include <sys/conf.h>
36 #include <sys/proc.h>
37 #include <sys/kernel.h>
38 #include <sys/vnode.h>
39 #include <sys/mount.h>
40 #include <sys/bio.h>
41 #include <sys/buf.h>
42 #include <sys/fcntl.h>
43 #include <sys/malloc.h>
44 #include <sys/stat.h>
45 #include <sys/systm.h>
46
47 #include <geom/geom.h>
48 #include <geom/geom_vfs.h>
49
50 #include <vm/vm.h>
51 #include <vm/vm_param.h>
52 #include <vm/vm_page.h>
53 #include <vm/vm_object.h>
54 #include <vm/vm_extern.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 static 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 struct sockaddr;
70
71 static int ntfs_mountfs(register struct vnode *, struct mount *,
72 struct thread *);
73 static int ntfs_calccfree(struct ntfsmount *ntmp, cn_t *cfreep);
74
75 static vfs_init_t ntfs_init;
76 static vfs_uninit_t ntfs_uninit;
77 static vfs_vget_t ntfs_vget;
78 static vfs_fhtovp_t ntfs_fhtovp;
79 static vfs_cmount_t ntfs_cmount;
80 static vfs_mount_t ntfs_mount;
81 static vfs_root_t ntfs_root;
82 static vfs_statfs_t ntfs_statfs;
83 static vfs_unmount_t ntfs_unmount;
84
85 static b_strategy_t ntfs_bufstrategy;
86
87 /*
88 * Buffer operations for NTFS vnodes.
89 * We punt on VOP_BMAP, so we need to do
90 * strategy on the file's vnode rather
91 * than the underlying device's
92 */
93 static struct buf_ops ntfs_vnbufops = {
94 .bop_name = "NTFS",
95 .bop_strategy = ntfs_bufstrategy,
96 };
97
98 static int
99 ntfs_init (
100 struct vfsconf *vcp )
101 {
102 ntfs_nthashinit();
103 ntfs_toupper_init();
104 return 0;
105 }
106
107 static int
108 ntfs_uninit (
109 struct vfsconf *vcp )
110 {
111 ntfs_toupper_destroy();
112 ntfs_nthashdestroy();
113 return 0;
114 }
115
116 static int
117 ntfs_cmount (
118 struct mntarg *ma,
119 void *data,
120 int flags)
121 {
122 struct ntfs_args args;
123 struct export_args exp;
124 int error;
125
126 error = copyin(data, &args, sizeof(args));
127 if (error)
128 return (error);
129 vfs_oexport_conv(&args.export, &exp);
130 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
131 ma = mount_arg(ma, "export", &exp, sizeof(exp));
132 ma = mount_argf(ma, "uid", "%d", args.uid);
133 ma = mount_argf(ma, "gid", "%d", args.gid);
134 ma = mount_argf(ma, "mode", "%d", args.mode);
135 ma = mount_argb(ma, args.flag & NTFS_MFLAG_CASEINS, "nocaseins");
136 ma = mount_argb(ma, args.flag & NTFS_MFLAG_ALLNAMES, "noallnames");
137 if (args.flag & NTFS_MFLAG_KICONV) {
138 ma = mount_argsu(ma, "cs_ntfs", args.cs_ntfs, 64);
139 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
140 }
141
142 error = kernel_mount(ma, flags);
143
144 return (error);
145 }
146
147 static const char *ntfs_opts[] = {
148 "from", "export", "uid", "gid", "mode", "caseins", "allnames",
149 "kiconv", "cs_ntfs", "cs_local", NULL
150 };
151
152 static int
153 ntfs_mount (struct mount *mp)
154 {
155 int err = 0, error;
156 struct vnode *devvp;
157 struct nameidata ndp;
158 char *from;
159
160 if (vfs_filteropt(mp->mnt_optnew, ntfs_opts))
161 return (EINVAL);
162
163 from = vfs_getopts(mp->mnt_optnew, "from", &error);
164 if (error)
165 return (error);
166
167 /*
168 * If updating, check whether changing from read-only to
169 * read/write.
170 */
171 if (mp->mnt_flag & MNT_UPDATE) {
172 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0)) {
173 /* Process export requests in vfs_mount.c */
174 goto success;
175 } else {
176 printf("ntfs_mount(): MNT_UPDATE not supported\n");
177 err = EINVAL;
178 goto error_1;
179 }
180 }
181
182 /*
183 * Not an update, or updating the name: look up the name
184 * and verify that it refers to a sensible block device.
185 */
186 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, from, curthread);
187 err = namei(&ndp);
188 if (err) {
189 /* can't get devvp!*/
190 goto error_1;
191 }
192 NDFREE(&ndp, NDF_ONLY_PNBUF);
193 devvp = ndp.ni_vp;
194
195 if (!vn_isdisk(devvp, &err)) {
196 vput(devvp);
197 return (err);
198 }
199
200 if (mp->mnt_flag & MNT_UPDATE) {
201 #if 0
202 /*
203 ********************
204 * UPDATE
205 ********************
206 */
207
208 if (devvp != ntmp->um_devvp)
209 err = EINVAL; /* needs translation */
210 vput(devvp);
211 if (err)
212 return (err);
213 #endif
214 } else {
215 /*
216 ********************
217 * NEW MOUNT
218 ********************
219 */
220
221 /*
222 * Since this is a new mount, we want the names for
223 * the device and the mount point copied in. If an
224 * error occurs, the mountpoint is discarded by the
225 * upper level code. Note that vfs_mount() handles
226 * copying the mountpoint f_mntonname for us, so we
227 * don't have to do it here unless we want to set it
228 * to something other than "path" for some rason.
229 */
230 /* Save "mounted from" info for mount point (NULL pad)*/
231 vfs_mountedfrom(mp, from);
232
233 err = ntfs_mountfs(devvp, mp, curthread);
234 }
235 if (err) {
236 vrele(devvp);
237 return (err);
238 }
239
240 goto success;
241
242 error_1: /* no state to back out*/
243 /* XXX: missing NDFREE(&ndp, ...) */
244
245 success:
246 return(err);
247 }
248
249 /*
250 * Common code for mount and mountroot
251 */
252 int
253 ntfs_mountfs(devvp, mp, td)
254 register struct vnode *devvp;
255 struct mount *mp;
256 struct thread *td;
257 {
258 struct buf *bp;
259 struct ntfsmount *ntmp;
260 struct cdev *dev = devvp->v_rdev;
261 int error, ronly, i, v;
262 struct vnode *vp;
263 struct g_consumer *cp;
264 struct g_provider *pp;
265 char *cs_ntfs, *cs_local;
266
267 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
268 DROP_GIANT();
269 g_topology_lock();
270
271 /*
272 * XXX: Do not allow more than one consumer to open a device
273 * associated with a particular GEOM provider.
274 * This disables multiple read-only mounts of a device,
275 * but it gets rid of panics in vget() when you try to
276 * mount the same device more than once.
277 */
278 pp = g_dev_getprovider(devvp->v_rdev);
279 if ((pp != NULL) && ((pp->acr | pp->acw | pp->ace ) != 0))
280 error = EPERM;
281 else
282 error = g_vfs_open(devvp, &cp, "ntfs", ronly ? 0 : 1);
283
284 g_topology_unlock();
285 PICKUP_GIANT();
286 VOP_UNLOCK(devvp, 0);
287 if (error)
288 return (error);
289
290 bp = NULL;
291
292 error = bread(devvp, BBLOCK, BBSIZE, NOCRED, &bp);
293 if (error)
294 goto out;
295 ntmp = malloc( sizeof *ntmp, M_NTFSMNT, M_WAITOK | M_ZERO);
296 bcopy( bp->b_data, &ntmp->ntm_bootfile, sizeof(struct bootfile) );
297 /*
298 * We must not cache the boot block if its size is not exactly
299 * one cluster in order to avoid confusing the buffer cache when
300 * the boot file is read later by ntfs_readntvattr_plain(), which
301 * reads a cluster at a time.
302 */
303 if (ntfs_cntob(1) != BBSIZE)
304 bp->b_flags |= B_NOCACHE;
305 brelse( bp );
306 bp = NULL;
307
308 if (strncmp((const char *)ntmp->ntm_bootfile.bf_sysid, NTFS_BBID, NTFS_BBIDLEN)) {
309 error = EINVAL;
310 dprintf(("ntfs_mountfs: invalid boot block\n"));
311 goto out;
312 }
313
314 {
315 int8_t cpr = ntmp->ntm_mftrecsz;
316 if( cpr > 0 )
317 ntmp->ntm_bpmftrec = ntmp->ntm_spc * cpr;
318 else
319 ntmp->ntm_bpmftrec = (1 << (-cpr)) / ntmp->ntm_bps;
320 }
321 ntmp->ntm_multiplier = ntmp->ntm_bps / DEV_BSIZE;
322
323 dprintf(("ntfs_mountfs(): bps: %d, spc: %d, media: %x, mftrecsz: %d (%d sects)\n",
324 ntmp->ntm_bps,ntmp->ntm_spc,ntmp->ntm_bootfile.bf_media,
325 ntmp->ntm_mftrecsz,ntmp->ntm_bpmftrec));
326 dprintf(("ntfs_mountfs(): mftcn: 0x%x|0x%x\n",
327 (u_int32_t)ntmp->ntm_mftcn,(u_int32_t)ntmp->ntm_mftmirrcn));
328
329 ntmp->ntm_mountp = mp;
330 ntmp->ntm_devvp = devvp;
331 if (1 == vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v))
332 ntmp->ntm_uid = v;
333 if (1 == vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v))
334 ntmp->ntm_gid = v;
335 if (1 == vfs_scanopt(mp->mnt_optnew, "mode", "%d", &v))
336 ntmp->ntm_mode = v & ACCESSPERMS;
337 vfs_flagopt(mp->mnt_optnew,
338 "caseins", &ntmp->ntm_flag, NTFS_MFLAG_CASEINS);
339 vfs_flagopt(mp->mnt_optnew,
340 "allnames", &ntmp->ntm_flag, NTFS_MFLAG_ALLNAMES);
341 ntmp->ntm_cp = cp;
342 ntmp->ntm_bo = &devvp->v_bufobj;
343
344 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
345 if (error && error != ENOENT)
346 goto out;
347 cs_ntfs = vfs_getopts(mp->mnt_optnew, "cs_ntfs", &error);
348 if (error && error != ENOENT)
349 goto out;
350 /* Copy in the 8-bit to Unicode conversion table */
351 /* Initialize Unicode to 8-bit table from 8toU table */
352 ntfs_82u_init(ntmp, cs_local, cs_ntfs);
353 if (cs_local != NULL && cs_ntfs != NULL)
354 ntfs_u28_init(ntmp, NULL, cs_local, cs_ntfs);
355 else
356 ntfs_u28_init(ntmp, ntmp->ntm_82u, cs_local, cs_ntfs);
357
358 mp->mnt_data = ntmp;
359
360 dprintf(("ntfs_mountfs(): case-%s,%s uid: %d, gid: %d, mode: %o\n",
361 (ntmp->ntm_flag & NTFS_MFLAG_CASEINS)?"insens.":"sens.",
362 (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)?" allnames,":"",
363 ntmp->ntm_uid, ntmp->ntm_gid, ntmp->ntm_mode));
364
365 /*
366 * We read in some system nodes to do not allow
367 * reclaim them and to have everytime access to them.
368 */
369 {
370 int pi[3] = { NTFS_MFTINO, NTFS_ROOTINO, NTFS_BITMAPINO };
371 for (i=0; i<3; i++) {
372 error = VFS_VGET(mp, pi[i], LK_EXCLUSIVE,
373 &(ntmp->ntm_sysvn[pi[i]]));
374 if(error)
375 goto out1;
376 ntmp->ntm_sysvn[pi[i]]->v_vflag |= VV_SYSTEM;
377 VREF(ntmp->ntm_sysvn[pi[i]]);
378 vput(ntmp->ntm_sysvn[pi[i]]);
379 }
380 }
381
382 /* read the Unicode lowercase --> uppercase translation table,
383 * if necessary */
384 if ((error = ntfs_toupper_use(mp, ntmp)))
385 goto out1;
386
387 /*
388 * Scan $BitMap and count free clusters
389 */
390 error = ntfs_calccfree(ntmp, &ntmp->ntm_cfree);
391 if(error)
392 goto out1;
393
394 /*
395 * Read and translate to internal format attribute
396 * definition file.
397 */
398 {
399 int num,j;
400 struct attrdef ad;
401
402 /* Open $AttrDef */
403 error = VFS_VGET(mp, NTFS_ATTRDEFINO, LK_EXCLUSIVE, &vp );
404 if(error)
405 goto out1;
406
407 /* Count valid entries */
408 for(num=0;;num++) {
409 error = ntfs_readattr(ntmp, VTONT(vp),
410 NTFS_A_DATA, NULL,
411 num * sizeof(ad), sizeof(ad),
412 &ad, NULL);
413 if (error)
414 goto out1;
415 if (ad.ad_name[0] == 0)
416 break;
417 }
418
419 /* Alloc memory for attribute definitions */
420 ntmp->ntm_ad = malloc(num * sizeof(struct ntvattrdef),
421 M_NTFSMNT, M_WAITOK);
422
423 ntmp->ntm_adnum = num;
424
425 /* Read them and translate */
426 for(i=0;i<num;i++){
427 error = ntfs_readattr(ntmp, VTONT(vp),
428 NTFS_A_DATA, NULL,
429 i * sizeof(ad), sizeof(ad),
430 &ad, NULL);
431 if (error)
432 goto out1;
433 j = 0;
434 do {
435 ntmp->ntm_ad[i].ad_name[j] = ad.ad_name[j];
436 } while(ad.ad_name[j++]);
437 ntmp->ntm_ad[i].ad_namelen = j - 1;
438 ntmp->ntm_ad[i].ad_type = ad.ad_type;
439 }
440
441 vput(vp);
442 }
443
444 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
445 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
446 mp->mnt_maxsymlinklen = 0;
447 MNT_ILOCK(mp);
448 mp->mnt_flag |= MNT_LOCAL;
449 MNT_IUNLOCK(mp);
450 return (0);
451
452 out1:
453 for(i=0;i<NTFS_SYSNODESNUM;i++)
454 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
455
456 if (vflush(mp, 0, 0, td))
457 dprintf(("ntfs_mountfs: vflush failed\n"));
458
459 out:
460 if (bp)
461 brelse(bp);
462
463 DROP_GIANT();
464 g_topology_lock();
465 g_vfs_close(cp);
466 g_topology_unlock();
467 PICKUP_GIANT();
468
469 return (error);
470 }
471
472 static int
473 ntfs_unmount(
474 struct mount *mp,
475 int mntflags)
476 {
477 struct thread *td;
478 struct ntfsmount *ntmp;
479 int error, flags, i;
480
481 dprintf(("ntfs_unmount: unmounting...\n"));
482 td = curthread;
483 ntmp = VFSTONTFS(mp);
484
485 flags = 0;
486 if(mntflags & MNT_FORCE)
487 flags |= FORCECLOSE;
488
489 dprintf(("ntfs_unmount: vflushing...\n"));
490 error = vflush(mp, 0, flags | SKIPSYSTEM, td);
491 if (error) {
492 printf("ntfs_unmount: vflush failed: %d\n",error);
493 return (error);
494 }
495
496 /* Check if only system vnodes are rest */
497 for(i=0;i<NTFS_SYSNODESNUM;i++)
498 if((ntmp->ntm_sysvn[i]) &&
499 (vrefcnt(ntmp->ntm_sysvn[i]) > 1)) return (EBUSY);
500
501 /* Dereference all system vnodes */
502 for(i=0;i<NTFS_SYSNODESNUM;i++)
503 if(ntmp->ntm_sysvn[i]) vrele(ntmp->ntm_sysvn[i]);
504
505 /* vflush system vnodes */
506 error = vflush(mp, 0, flags, td);
507 if (error)
508 printf("ntfs_unmount: vflush failed(sysnodes): %d\n",error);
509
510 vinvalbuf(ntmp->ntm_devvp, V_SAVE, 0, 0);
511
512 DROP_GIANT();
513 g_topology_lock();
514 g_vfs_close(ntmp->ntm_cp);
515 g_topology_unlock();
516 PICKUP_GIANT();
517
518 vrele(ntmp->ntm_devvp);
519
520 /* free the toupper table, if this has been last mounted ntfs volume */
521 ntfs_toupper_unuse();
522
523 dprintf(("ntfs_umount: freeing memory...\n"));
524 ntfs_u28_uninit(ntmp);
525 ntfs_82u_uninit(ntmp);
526 mp->mnt_data = NULL;
527 MNT_ILOCK(mp);
528 mp->mnt_flag &= ~MNT_LOCAL;
529 MNT_IUNLOCK(mp);
530 free(ntmp->ntm_ad, M_NTFSMNT);
531 free(ntmp, M_NTFSMNT);
532 return (error);
533 }
534
535 static int
536 ntfs_root(
537 struct mount *mp,
538 int flags,
539 struct vnode **vpp)
540 {
541 struct vnode *nvp;
542 int error = 0;
543
544 dprintf(("ntfs_root(): sysvn: %p\n",
545 VFSTONTFS(mp)->ntm_sysvn[NTFS_ROOTINO]));
546 error = VFS_VGET(mp, (ino_t)NTFS_ROOTINO, LK_EXCLUSIVE, &nvp);
547 if(error) {
548 printf("ntfs_root: VFS_VGET failed: %d\n",error);
549 return (error);
550 }
551
552 *vpp = nvp;
553 return (0);
554 }
555
556 static int
557 ntfs_calccfree(
558 struct ntfsmount *ntmp,
559 cn_t *cfreep)
560 {
561 struct vnode *vp;
562 u_int8_t *tmp;
563 int j, error;
564 long cfree = 0;
565 size_t bmsize, i;
566
567 vp = ntmp->ntm_sysvn[NTFS_BITMAPINO];
568
569 bmsize = VTOF(vp)->f_size;
570
571 tmp = malloc(bmsize, M_TEMP, M_WAITOK);
572
573 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
574 0, bmsize, tmp, NULL);
575 if (error)
576 goto out;
577
578 for(i=0;i<bmsize;i++)
579 for(j=0;j<8;j++)
580 if(~tmp[i] & (1 << j)) cfree++;
581 *cfreep = cfree;
582
583 out:
584 free(tmp, M_TEMP);
585 return(error);
586 }
587
588 static int
589 ntfs_statfs(
590 struct mount *mp,
591 struct statfs *sbp)
592 {
593 struct ntfsmount *ntmp = VFSTONTFS(mp);
594 u_int64_t mftsize,mftallocated;
595
596 dprintf(("ntfs_statfs():\n"));
597
598 mftsize = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_size;
599 mftallocated = VTOF(ntmp->ntm_sysvn[NTFS_MFTINO])->f_allocated;
600
601 sbp->f_type = mp->mnt_vfc->vfc_typenum;
602 sbp->f_bsize = ntmp->ntm_bps;
603 sbp->f_iosize = ntmp->ntm_bps * ntmp->ntm_spc;
604 sbp->f_blocks = ntmp->ntm_bootfile.bf_spv;
605 sbp->f_bfree = sbp->f_bavail = ntfs_cntobn(ntmp->ntm_cfree);
606 sbp->f_ffree = sbp->f_bfree / ntmp->ntm_bpmftrec;
607 sbp->f_files = mftallocated / ntfs_bntob(ntmp->ntm_bpmftrec) +
608 sbp->f_ffree;
609 sbp->f_flags = mp->mnt_flag;
610
611 return (0);
612 }
613
614 /*ARGSUSED*/
615 static int
616 ntfs_fhtovp(
617 struct mount *mp,
618 struct fid *fhp,
619 int flags,
620 struct vnode **vpp)
621 {
622 struct vnode *nvp;
623 struct ntfid *ntfhp = (struct ntfid *)fhp;
624 int error;
625
626 ddprintf(("ntfs_fhtovp(): %d\n", ntfhp->ntfid_ino));
627
628 if ((error = VFS_VGET(mp, ntfhp->ntfid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
629 *vpp = NULLVP;
630 return (error);
631 }
632 /* XXX as unlink/rmdir/mkdir/creat are not currently possible
633 * with NTFS, we don't need to check anything else for now */
634 *vpp = nvp;
635 vnode_create_vobject(nvp, VTOF(nvp)->f_size, curthread);
636 return (0);
637 }
638
639 int
640 ntfs_vgetex(
641 struct mount *mp,
642 ino_t ino,
643 u_int32_t attrtype,
644 char *attrname,
645 u_long lkflags,
646 u_long flags,
647 struct thread *td,
648 struct vnode **vpp)
649 {
650 int error;
651 register struct ntfsmount *ntmp;
652 struct ntnode *ip;
653 struct fnode *fp;
654 struct vnode *vp;
655 enum vtype f_type;
656
657 dprintf(("ntfs_vgetex: ino: %d, attr: 0x%x:%s, lkf: 0x%lx, f: 0x%lx\n",
658 ino, attrtype, attrname?attrname:"", (u_long)lkflags,
659 (u_long)flags));
660
661 ntmp = VFSTONTFS(mp);
662 *vpp = NULL;
663
664 /* Get ntnode */
665 error = ntfs_ntlookup(ntmp, ino, &ip);
666 if (error) {
667 printf("ntfs_vget: ntfs_ntget failed\n");
668 return (error);
669 }
670
671 /* It may be not initialized fully, so force load it */
672 if (!(flags & VG_DONTLOADIN) && !(ip->i_flag & IN_LOADED)) {
673 error = ntfs_loadntnode(ntmp, ip);
674 if(error) {
675 printf("ntfs_vget: CAN'T LOAD ATTRIBUTES FOR INO: %d\n",
676 ip->i_number);
677 ntfs_ntput(ip);
678 return (error);
679 }
680 }
681
682 error = ntfs_fget(ntmp, ip, attrtype, attrname, &fp);
683 if (error) {
684 printf("ntfs_vget: ntfs_fget failed\n");
685 ntfs_ntput(ip);
686 return (error);
687 }
688
689 f_type = VNON;
690 if (!(flags & VG_DONTVALIDFN) && !(fp->f_flag & FN_VALID)) {
691 if ((ip->i_frflag & NTFS_FRFLAG_DIR) &&
692 (fp->f_attrtype == NTFS_A_DATA && fp->f_attrname == NULL)) {
693 f_type = VDIR;
694 } else if (flags & VG_EXT) {
695 f_type = VNON;
696 fp->f_size = fp->f_allocated = 0;
697 } else {
698 f_type = VREG;
699
700 error = ntfs_filesize(ntmp, fp,
701 &fp->f_size, &fp->f_allocated);
702 if (error) {
703 ntfs_ntput(ip);
704 return (error);
705 }
706 }
707
708 fp->f_flag |= FN_VALID;
709 }
710
711 if (FTOV(fp)) {
712 vget(FTOV(fp), lkflags, td);
713 *vpp = FTOV(fp);
714 ntfs_ntput(ip);
715 return (0);
716 }
717
718 error = getnewvnode("ntfs", ntmp->ntm_mountp, &ntfs_vnodeops, &vp);
719 if(error) {
720 ntfs_frele(fp);
721 ntfs_ntput(ip);
722 return (error);
723 }
724 /* XXX: Too early for mpsafe fs, lacks vnode lock */
725 error = insmntque(vp, ntmp->ntm_mountp);
726 if (error) {
727 ntfs_frele(fp);
728 ntfs_ntput(ip);
729 return (error);
730 }
731 dprintf(("ntfs_vget: vnode: %p for ntnode: %d\n", vp,ino));
732
733 fp->f_vp = vp;
734 vp->v_data = fp;
735 vp->v_type = f_type;
736
737 vp->v_bufobj.bo_ops = &ntfs_vnbufops;
738 vp->v_bufobj.bo_private = vp;
739
740 if (ino == NTFS_ROOTINO)
741 vp->v_vflag |= VV_ROOT;
742
743 ntfs_ntput(ip);
744
745 if (lkflags & LK_TYPE_MASK) {
746 error = vn_lock(vp, lkflags);
747 if (error) {
748 vput(vp);
749 return (error);
750 }
751 }
752
753 *vpp = vp;
754 return (0);
755
756 }
757
758 static int
759 ntfs_vget(
760 struct mount *mp,
761 ino_t ino,
762 int lkflags,
763 struct vnode **vpp)
764 {
765 return ntfs_vgetex(mp, ino, NTFS_A_DATA, NULL, lkflags, 0,
766 curthread, vpp);
767 }
768
769 static void
770 ntfs_bufstrategy(struct bufobj *bo, struct buf *bp)
771 {
772 struct vnode *vp;
773 int rc;
774
775 vp = bo->bo_private;
776 KASSERT(bo == &vp->v_bufobj, ("BO/VP mismatch: vp %p bo %p != %p",
777 vp, &vp->v_bufobj, bo));
778 rc = VOP_STRATEGY(vp, bp);
779 KASSERT(rc == 0, ("NTFS VOP_STRATEGY failed: bp=%p, "
780 "vp=%p, rc=%d", bp, vp, rc));
781 }
782
783 static struct vfsops ntfs_vfsops = {
784 .vfs_fhtovp = ntfs_fhtovp,
785 .vfs_init = ntfs_init,
786 .vfs_cmount = ntfs_cmount,
787 .vfs_mount = ntfs_mount,
788 .vfs_root = ntfs_root,
789 .vfs_statfs = ntfs_statfs,
790 .vfs_uninit = ntfs_uninit,
791 .vfs_unmount = ntfs_unmount,
792 .vfs_vget = ntfs_vget,
793 };
794 VFS_SET(ntfs_vfsops, ntfs, 0);
795 MODULE_VERSION(ntfs, 1);
Cache object: 0ede401fff3d06d51d54ade2df77f98c
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