109 ma = mount_argsu(ma, "cs_disk", args.cs_disk, 64);
110 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
111 ma = mount_argf(ma, "ssector", "%u", args.ssector);
112 ma = mount_argb(ma, !(args.flags & ISOFSMNT_NORRIP), "norrip");
113 ma = mount_argb(ma, args.flags & ISOFSMNT_GENS, "nogens");
114 ma = mount_argb(ma, args.flags & ISOFSMNT_EXTATT, "noextatt");
115 ma = mount_argb(ma, !(args.flags & ISOFSMNT_NOJOLIET), "nojoliet");
116 ma = mount_argb(ma,
117 args.flags & ISOFSMNT_BROKENJOLIET, "nobrokenjoliet");
118 ma = mount_argb(ma, args.flags & ISOFSMNT_KICONV, "nokiconv");
119
120 error = kernel_mount(ma, flags);
121
122 return (error);
123}
124
125static int
126cd9660_mount(struct mount *mp)
127{
128 struct vnode *devvp;
129 struct thread *td;
130 char *fspec;
131 int error;
132 accmode_t accmode;
133 struct nameidata ndp;
134 struct iso_mnt *imp = 0;
135
136 td = curthread;
137
138 /*
139 * Unconditionally mount as read-only.
140 */
141 MNT_ILOCK(mp);
142 mp->mnt_flag |= MNT_RDONLY;
143 MNT_IUNLOCK(mp);
144
145 fspec = vfs_getopts(mp->mnt_optnew, "from", &error);
146 if (error)
147 return (error);
148
149 imp = VFSTOISOFS(mp);
150
151 if (mp->mnt_flag & MNT_UPDATE) {
152 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0))
153 return (0);
154 }
155 /*
156 * Not an update, or updating the name: look up the name
157 * and verify that it refers to a sensible block device.
158 */
159 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td);
160 if ((error = namei(&ndp)))
161 return (error);
162 NDFREE(&ndp, NDF_ONLY_PNBUF);
163 devvp = ndp.ni_vp;
164
165 if (!vn_isdisk(devvp, &error)) {
166 vput(devvp);
167 return (error);
168 }
169
170 /*
171 * Verify that user has necessary permissions on the device,
172 * or has superuser abilities
173 */
174 accmode = VREAD;
175 error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
176 if (error)
177 error = priv_check(td, PRIV_VFS_MOUNT_PERM);
178 if (error) {
179 vput(devvp);
180 return (error);
181 }
182
183 if ((mp->mnt_flag & MNT_UPDATE) == 0) {
184 error = iso_mountfs(devvp, mp);
185 if (error)
186 vrele(devvp);
187 } else {
188 if (devvp != imp->im_devvp)
189 error = EINVAL; /* needs translation */
190 vput(devvp);
191 }
192 if (error)
193 return (error);
194 vfs_mountedfrom(mp, fspec);
195 return (0);
196}
197
198/*
199 * Common code for mount and mountroot
200 */
201static int
202iso_mountfs(devvp, mp)
203 struct vnode *devvp;
204 struct mount *mp;
205{
206 struct iso_mnt *isomp = (struct iso_mnt *)0;
207 struct buf *bp = NULL;
208 struct buf *pribp = NULL, *supbp = NULL;
209 struct cdev *dev;
210 int error = EINVAL;
211 int high_sierra = 0;
212 int iso_bsize;
213 int iso_blknum;
214 int joliet_level;
215 struct iso_volume_descriptor *vdp = 0;
216 struct iso_primary_descriptor *pri = NULL;
217 struct iso_sierra_primary_descriptor *pri_sierra = NULL;
218 struct iso_supplementary_descriptor *sup = NULL;
219 struct iso_directory_record *rootp;
220 int logical_block_size, ssector;
221 struct g_consumer *cp;
222 struct bufobj *bo;
223 char *cs_local, *cs_disk;
224
225 dev = devvp->v_rdev;
226 dev_ref(dev);
227 DROP_GIANT();
228 g_topology_lock();
229 error = g_vfs_open(devvp, &cp, "cd9660", 0);
230 g_topology_unlock();
231 PICKUP_GIANT();
232 VOP_UNLOCK(devvp, 0);
233 if (error)
234 goto out;
235 if (devvp->v_rdev->si_iosize_max != 0)
236 mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
237 if (mp->mnt_iosize_max > MAXPHYS)
238 mp->mnt_iosize_max = MAXPHYS;
239
240 bo = &devvp->v_bufobj;
241
242 /* This is the "logical sector size". The standard says this
243 * should be 2048 or the physical sector size on the device,
244 * whichever is greater.
245 */
246 if ((ISO_DEFAULT_BLOCK_SIZE % cp->provider->sectorsize) != 0) {
247 error = EINVAL;
248 goto out;
249 }
250
251 iso_bsize = cp->provider->sectorsize;
252
253 joliet_level = 0;
254 if (1 != vfs_scanopt(mp->mnt_optnew, "ssector", "%d", &ssector))
255 ssector = 0;
256 for (iso_blknum = 16 + ssector;
257 iso_blknum < 100 + ssector;
258 iso_blknum++) {
259 if ((error = bread(devvp, iso_blknum * btodb(ISO_DEFAULT_BLOCK_SIZE),
260 iso_bsize, NOCRED, &bp)) != 0)
261 goto out;
262
263 vdp = (struct iso_volume_descriptor *)bp->b_data;
264 if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) {
265 if (bcmp (vdp->id_sierra, ISO_SIERRA_ID,
266 sizeof vdp->id_sierra) != 0) {
267 error = EINVAL;
268 goto out;
269 } else
270 high_sierra = 1;
271 }
272 switch (isonum_711 (high_sierra? vdp->type_sierra: vdp->type)){
273 case ISO_VD_PRIMARY:
274 if (pribp == NULL) {
275 pribp = bp;
276 bp = NULL;
277 pri = (struct iso_primary_descriptor *)vdp;
278 pri_sierra =
279 (struct iso_sierra_primary_descriptor *)vdp;
280 }
281 break;
282
283 case ISO_VD_SUPPLEMENTARY:
284 if (supbp == NULL) {
285 supbp = bp;
286 bp = NULL;
287 sup = (struct iso_supplementary_descriptor *)vdp;
288
289 if (!vfs_flagopt(mp->mnt_optnew, "nojoliet", NULL, 0)) {
290 if (bcmp(sup->escape, "%/@", 3) == 0)
291 joliet_level = 1;
292 if (bcmp(sup->escape, "%/C", 3) == 0)
293 joliet_level = 2;
294 if (bcmp(sup->escape, "%/E", 3) == 0)
295 joliet_level = 3;
296
297 if ((isonum_711 (sup->flags) & 1) &&
298 !vfs_flagopt(mp->mnt_optnew, "brokenjoliet", NULL, 0))
299 joliet_level = 0;
300 }
301 }
302 break;
303
304 case ISO_VD_END:
305 goto vd_end;
306
307 default:
308 break;
309 }
310 if (bp) {
311 brelse(bp);
312 bp = NULL;
313 }
314 }
315 vd_end:
316 if (bp) {
317 brelse(bp);
318 bp = NULL;
319 }
320
321 if (pri == NULL) {
322 error = EINVAL;
323 goto out;
324 }
325
326 logical_block_size =
327 isonum_723 (high_sierra?
328 pri_sierra->logical_block_size:
329 pri->logical_block_size);
330
331 if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE
332 || (logical_block_size & (logical_block_size - 1)) != 0) {
333 error = EINVAL;
334 goto out;
335 }
336
337 rootp = (struct iso_directory_record *)
338 (high_sierra?
339 pri_sierra->root_directory_record:
340 pri->root_directory_record);
341
342 isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK | M_ZERO);
343 isomp->im_cp = cp;
344 isomp->im_bo = bo;
345 isomp->logical_block_size = logical_block_size;
346 isomp->volume_space_size =
347 isonum_733 (high_sierra?
348 pri_sierra->volume_space_size:
349 pri->volume_space_size);
350 isomp->joliet_level = 0;
351 /*
352 * Since an ISO9660 multi-session CD can also access previous
353 * sessions, we have to include them into the space consider-
354 * ations. This doesn't yield a very accurate number since
355 * parts of the old sessions might be inaccessible now, but we
356 * can't do much better. This is also important for the NFS
357 * filehandle validation.
358 */
359 isomp->volume_space_size += ssector;
360 bcopy (rootp, isomp->root, sizeof isomp->root);
361 isomp->root_extent = isonum_733 (rootp->extent);
362 isomp->root_size = isonum_733 (rootp->size);
363
364 isomp->im_bmask = logical_block_size - 1;
365 isomp->im_bshift = ffs(logical_block_size) - 1;
366
367 pribp->b_flags |= B_AGE;
368 brelse(pribp);
369 pribp = NULL;
370
371 mp->mnt_data = isomp;
372 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
373 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
374 mp->mnt_maxsymlinklen = 0;
375 MNT_ILOCK(mp);
376 mp->mnt_flag |= MNT_LOCAL;
377 mp->mnt_kern_flag |= MNTK_MPSAFE | MNTK_LOOKUP_SHARED |
378 MNTK_EXTENDED_SHARED;
379 MNT_IUNLOCK(mp);
380 isomp->im_mountp = mp;
381 isomp->im_dev = dev;
382 isomp->im_devvp = devvp;
383
384 vfs_flagopt(mp->mnt_optnew, "norrip", &isomp->im_flags, ISOFSMNT_NORRIP);
385 vfs_flagopt(mp->mnt_optnew, "gens", &isomp->im_flags, ISOFSMNT_GENS);
386 vfs_flagopt(mp->mnt_optnew, "extatt", &isomp->im_flags, ISOFSMNT_EXTATT);
387 vfs_flagopt(mp->mnt_optnew, "nojoliet", &isomp->im_flags, ISOFSMNT_NOJOLIET);
388 vfs_flagopt(mp->mnt_optnew, "kiconv", &isomp->im_flags, ISOFSMNT_KICONV);
389
390 /* Check the Rock Ridge Extension support */
391 if (!(isomp->im_flags & ISOFSMNT_NORRIP)) {
392 if ((error = bread(isomp->im_devvp,
393 (isomp->root_extent + isonum_711(rootp->ext_attr_length)) <<
394 (isomp->im_bshift - DEV_BSHIFT),
395 isomp->logical_block_size, NOCRED, &bp)) != 0)
396 goto out;
397
398 rootp = (struct iso_directory_record *)bp->b_data;
399
400 if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) {
401 isomp->im_flags |= ISOFSMNT_NORRIP;
402 } else {
403 isomp->im_flags &= ~ISOFSMNT_GENS;
404 }
405
406 /*
407 * The contents are valid,
408 * but they will get reread as part of another vnode, so...
409 */
410 bp->b_flags |= B_AGE;
411 brelse(bp);
412 bp = NULL;
413 }
414
415 if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) {
416 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
417 if (error)
418 goto out;
419 cs_disk = vfs_getopts(mp->mnt_optnew, "cs_disk", &error);
420 if (error)
421 goto out;
422 cd9660_iconv->open(cs_local, cs_disk, &isomp->im_d2l);
423 cd9660_iconv->open(cs_disk, cs_local, &isomp->im_l2d);
424 } else {
425 isomp->im_d2l = NULL;
426 isomp->im_l2d = NULL;
427 }
428
429 if (high_sierra) {
430 /* this effectively ignores all the mount flags */
431 if (bootverbose)
432 log(LOG_INFO, "cd9660: High Sierra Format\n");
433 isomp->iso_ftype = ISO_FTYPE_HIGH_SIERRA;
434 } else
435 switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) {
436 default:
437 isomp->iso_ftype = ISO_FTYPE_DEFAULT;
438 break;
439 case ISOFSMNT_GENS|ISOFSMNT_NORRIP:
440 isomp->iso_ftype = ISO_FTYPE_9660;
441 break;
442 case 0:
443 if (bootverbose)
444 log(LOG_INFO, "cd9660: RockRidge Extension\n");
445 isomp->iso_ftype = ISO_FTYPE_RRIP;
446 break;
447 }
448
449 /* Decide whether to use the Joliet descriptor */
450
451 if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) {
452 if (bootverbose)
453 log(LOG_INFO, "cd9660: Joliet Extension (Level %d)\n",
454 joliet_level);
455 rootp = (struct iso_directory_record *)
456 sup->root_directory_record;
457 bcopy (rootp, isomp->root, sizeof isomp->root);
458 isomp->root_extent = isonum_733 (rootp->extent);
459 isomp->root_size = isonum_733 (rootp->size);
460 isomp->joliet_level = joliet_level;
461 supbp->b_flags |= B_AGE;
462 }
463
464 if (supbp) {
465 brelse(supbp);
466 supbp = NULL;
467 }
468
469 return 0;
470out:
471 if (bp)
472 brelse(bp);
473 if (pribp)
474 brelse(pribp);
475 if (supbp)
476 brelse(supbp);
477 if (cp != NULL) {
478 DROP_GIANT();
479 g_topology_lock();
480 g_vfs_close(cp);
481 g_topology_unlock();
482 PICKUP_GIANT();
483 }
484 if (isomp) {
485 free((caddr_t)isomp, M_ISOFSMNT);
486 mp->mnt_data = NULL;
487 }
488 dev_rel(dev);
489 return error;
490}
491
492/*
493 * unmount system call
494 */
495static int
496cd9660_unmount(mp, mntflags)
497 struct mount *mp;
498 int mntflags;
499{
500 struct iso_mnt *isomp;
501 int error, flags = 0;
502
503 if (mntflags & MNT_FORCE)
504 flags |= FORCECLOSE;
505 if ((error = vflush(mp, 0, flags, curthread)))
506 return (error);
507
508 isomp = VFSTOISOFS(mp);
509
510 if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) {
511 if (isomp->im_d2l)
512 cd9660_iconv->close(isomp->im_d2l);
513 if (isomp->im_l2d)
514 cd9660_iconv->close(isomp->im_l2d);
515 }
516 DROP_GIANT();
517 g_topology_lock();
518 g_vfs_close(isomp->im_cp);
519 g_topology_unlock();
520 PICKUP_GIANT();
521 vrele(isomp->im_devvp);
522 dev_rel(isomp->im_dev);
523 free((caddr_t)isomp, M_ISOFSMNT);
524 mp->mnt_data = NULL;
525 MNT_ILOCK(mp);
526 mp->mnt_flag &= ~MNT_LOCAL;
527 MNT_IUNLOCK(mp);
528 return (error);
529}
530
531/*
532 * Return root of a filesystem
533 */
534static int
535cd9660_root(mp, flags, vpp)
536 struct mount *mp;
537 int flags;
538 struct vnode **vpp;
539{
540 struct iso_mnt *imp = VFSTOISOFS(mp);
541 struct iso_directory_record *dp =
542 (struct iso_directory_record *)imp->root;
543 ino_t ino = isodirino(dp, imp);
544
545 /*
546 * With RRIP we must use the `.' entry of the root directory.
547 * Simply tell vget, that it's a relocated directory.
548 */
549 return (cd9660_vget_internal(mp, ino, flags, vpp,
550 imp->iso_ftype == ISO_FTYPE_RRIP, dp));
551}
552
553/*
554 * Get filesystem statistics.
555 */
556static int
557cd9660_statfs(mp, sbp)
558 struct mount *mp;
559 struct statfs *sbp;
560{
561 struct iso_mnt *isomp;
562
563 isomp = VFSTOISOFS(mp);
564
565 sbp->f_bsize = isomp->logical_block_size;
566 sbp->f_iosize = sbp->f_bsize; /* XXX */
567 sbp->f_blocks = isomp->volume_space_size;
568 sbp->f_bfree = 0; /* total free blocks */
569 sbp->f_bavail = 0; /* blocks free for non superuser */
570 sbp->f_files = 0; /* total files */
571 sbp->f_ffree = 0; /* free file nodes */
572 return 0;
573}
574
575/*
576 * File handle to vnode
577 *
578 * Have to be really careful about stale file handles:
579 * - check that the inode number is in range
580 * - call iget() to get the locked inode
581 * - check for an unallocated inode (i_mode == 0)
582 * - check that the generation number matches
583 */
584
585/* ARGSUSED */
586static int
587cd9660_fhtovp(mp, fhp, vpp)
588 struct mount *mp;
589 struct fid *fhp;
590 struct vnode **vpp;
591{
592 struct ifid ifh;
593 struct iso_node *ip;
594 struct vnode *nvp;
595 int error;
596
597 memcpy(&ifh, fhp, sizeof(ifh));
598
599#ifdef ISOFS_DBG
600 printf("fhtovp: ino %d, start %ld\n",
601 ifh.ifid_ino, ifh.ifid_start);
602#endif
603
604 if ((error = VFS_VGET(mp, ifh.ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
605 *vpp = NULLVP;
606 return (error);
607 }
608 ip = VTOI(nvp);
609 if (ip->inode.iso_mode == 0) {
610 vput(nvp);
611 *vpp = NULLVP;
612 return (ESTALE);
613 }
614 *vpp = nvp;
615 vnode_create_vobject(*vpp, ip->i_size, curthread);
616 return (0);
617}
618
619static int
620cd9660_vget(mp, ino, flags, vpp)
621 struct mount *mp;
622 ino_t ino;
623 int flags;
624 struct vnode **vpp;
625{
626
627 /*
628 * XXXX
629 * It would be nice if we didn't always set the `relocated' flag
630 * and force the extra read, but I don't want to think about fixing
631 * that right now.
632 */
633 return (cd9660_vget_internal(mp, ino, flags, vpp,
634#if 0
635 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP,
636#else
637 0,
638#endif
639 (struct iso_directory_record *)0));
640}
641
642int
643cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
644 struct mount *mp;
645 ino_t ino;
646 int flags;
647 struct vnode **vpp;
648 int relocated;
649 struct iso_directory_record *isodir;
650{
651 struct iso_mnt *imp;
652 struct iso_node *ip;
653 struct buf *bp;
654 struct vnode *vp;
655 struct cdev *dev;
656 int error;
657 struct thread *td;
658
659 td = curthread;
660 error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
661 if (error || *vpp != NULL)
662 return (error);
663
664 /*
665 * We must promote to an exclusive lock for vnode creation. This
666 * can happen if lookup is passed LOCKSHARED.
667 */
668 if ((flags & LK_TYPE_MASK) == LK_SHARED) {
669 flags &= ~LK_TYPE_MASK;
670 flags |= LK_EXCLUSIVE;
671 }
672
673 /*
674 * We do not lock vnode creation as it is believed to be too
675 * expensive for such rare case as simultaneous creation of vnode
676 * for same ino by different processes. We just allow them to race
677 * and check later to decide who wins. Let the race begin!
678 */
679
680 imp = VFSTOISOFS(mp);
681 dev = imp->im_dev;
682
683 /* Allocate a new vnode/iso_node. */
684 if ((error = getnewvnode("isofs", mp, &cd9660_vnodeops, &vp)) != 0) {
685 *vpp = NULLVP;
686 return (error);
687 }
688 ip = malloc(sizeof(struct iso_node), M_ISOFSNODE,
689 M_WAITOK | M_ZERO);
690 vp->v_data = ip;
691 ip->i_vnode = vp;
692 ip->i_number = ino;
693
694 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
695 error = insmntque(vp, mp);
696 if (error != 0) {
697 free(ip, M_ISOFSNODE);
698 *vpp = NULLVP;
699 return (error);
700 }
701 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
702 if (error || *vpp != NULL)
703 return (error);
704
705 if (isodir == 0) {
706 int lbn, off;
707
708 lbn = lblkno(imp, ino);
709 if (lbn >= imp->volume_space_size) {
710 vput(vp);
711 printf("fhtovp: lbn exceed volume space %d\n", lbn);
712 return (ESTALE);
713 }
714
715 off = blkoff(imp, ino);
716 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
717 vput(vp);
718 printf("fhtovp: crosses block boundary %d\n",
719 off + ISO_DIRECTORY_RECORD_SIZE);
720 return (ESTALE);
721 }
722
723 error = bread(imp->im_devvp,
724 lbn << (imp->im_bshift - DEV_BSHIFT),
725 imp->logical_block_size, NOCRED, &bp);
726 if (error) {
727 vput(vp);
728 brelse(bp);
729 printf("fhtovp: bread error %d\n",error);
730 return (error);
731 }
732 isodir = (struct iso_directory_record *)(bp->b_data + off);
733
734 if (off + isonum_711(isodir->length) >
735 imp->logical_block_size) {
736 vput(vp);
737 if (bp != 0)
738 brelse(bp);
739 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
740 off +isonum_711(isodir->length), off,
741 isonum_711(isodir->length));
742 return (ESTALE);
743 }
744
745#if 0
746 if (isonum_733(isodir->extent) +
747 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
748 if (bp != 0)
749 brelse(bp);
750 printf("fhtovp: file start miss %d vs %d\n",
751 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
752 ifhp->ifid_start);
753 return (ESTALE);
754 }
755#endif
756 } else
757 bp = 0;
758
759 ip->i_mnt = imp;
760
761 if (relocated) {
762 /*
763 * On relocated directories we must
764 * read the `.' entry out of a dir.
765 */
766 ip->iso_start = ino >> imp->im_bshift;
767 if (bp != 0)
768 brelse(bp);
769 if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
770 vput(vp);
771 return (error);
772 }
773 isodir = (struct iso_directory_record *)bp->b_data;
774 }
775
776 ip->iso_extent = isonum_733(isodir->extent);
777 ip->i_size = isonum_733(isodir->size);
778 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent;
779
780 /*
781 * Setup time stamp, attribute
782 */
783 vp->v_type = VNON;
784 switch (imp->iso_ftype) {
785 default: /* ISO_FTYPE_9660 */
786 {
787 struct buf *bp2;
788 int off;
789 if ((imp->im_flags & ISOFSMNT_EXTATT)
790 && (off = isonum_711(isodir->ext_attr_length)))
791 cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL,
792 &bp2);
793 else
794 bp2 = NULL;
795 cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660);
796 cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660);
797 if (bp2)
798 brelse(bp2);
799 break;
800 }
801 case ISO_FTYPE_RRIP:
802 cd9660_rrip_analyze(isodir, ip, imp);
803 break;
804 }
805
806 if (bp != 0)
807 brelse(bp);
808
809 /*
810 * Initialize the associated vnode
811 */
812 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) {
813 case VFIFO:
814 vp->v_op = &cd9660_fifoops;
815 break;
816 default:
817 VN_LOCK_ASHARE(vp);
818 break;
819 }
820
821 if (ip->iso_extent == imp->root_extent)
822 vp->v_vflag |= VV_ROOT;
823
824 /*
825 * XXX need generation number?
826 */
827
828 *vpp = vp;
829 return (0);
830}
| 111 ma = mount_argsu(ma, "cs_disk", args.cs_disk, 64);
112 ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
113 ma = mount_argf(ma, "ssector", "%u", args.ssector);
114 ma = mount_argb(ma, !(args.flags & ISOFSMNT_NORRIP), "norrip");
115 ma = mount_argb(ma, args.flags & ISOFSMNT_GENS, "nogens");
116 ma = mount_argb(ma, args.flags & ISOFSMNT_EXTATT, "noextatt");
117 ma = mount_argb(ma, !(args.flags & ISOFSMNT_NOJOLIET), "nojoliet");
118 ma = mount_argb(ma,
119 args.flags & ISOFSMNT_BROKENJOLIET, "nobrokenjoliet");
120 ma = mount_argb(ma, args.flags & ISOFSMNT_KICONV, "nokiconv");
121
122 error = kernel_mount(ma, flags);
123
124 return (error);
125}
126
127static int
128cd9660_mount(struct mount *mp)
129{
130 struct vnode *devvp;
131 struct thread *td;
132 char *fspec;
133 int error;
134 accmode_t accmode;
135 struct nameidata ndp;
136 struct iso_mnt *imp = 0;
137
138 td = curthread;
139
140 /*
141 * Unconditionally mount as read-only.
142 */
143 MNT_ILOCK(mp);
144 mp->mnt_flag |= MNT_RDONLY;
145 MNT_IUNLOCK(mp);
146
147 fspec = vfs_getopts(mp->mnt_optnew, "from", &error);
148 if (error)
149 return (error);
150
151 imp = VFSTOISOFS(mp);
152
153 if (mp->mnt_flag & MNT_UPDATE) {
154 if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0))
155 return (0);
156 }
157 /*
158 * Not an update, or updating the name: look up the name
159 * and verify that it refers to a sensible block device.
160 */
161 NDINIT(&ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td);
162 if ((error = namei(&ndp)))
163 return (error);
164 NDFREE(&ndp, NDF_ONLY_PNBUF);
165 devvp = ndp.ni_vp;
166
167 if (!vn_isdisk(devvp, &error)) {
168 vput(devvp);
169 return (error);
170 }
171
172 /*
173 * Verify that user has necessary permissions on the device,
174 * or has superuser abilities
175 */
176 accmode = VREAD;
177 error = VOP_ACCESS(devvp, accmode, td->td_ucred, td);
178 if (error)
179 error = priv_check(td, PRIV_VFS_MOUNT_PERM);
180 if (error) {
181 vput(devvp);
182 return (error);
183 }
184
185 if ((mp->mnt_flag & MNT_UPDATE) == 0) {
186 error = iso_mountfs(devvp, mp);
187 if (error)
188 vrele(devvp);
189 } else {
190 if (devvp != imp->im_devvp)
191 error = EINVAL; /* needs translation */
192 vput(devvp);
193 }
194 if (error)
195 return (error);
196 vfs_mountedfrom(mp, fspec);
197 return (0);
198}
199
200/*
201 * Common code for mount and mountroot
202 */
203static int
204iso_mountfs(devvp, mp)
205 struct vnode *devvp;
206 struct mount *mp;
207{
208 struct iso_mnt *isomp = (struct iso_mnt *)0;
209 struct buf *bp = NULL;
210 struct buf *pribp = NULL, *supbp = NULL;
211 struct cdev *dev;
212 int error = EINVAL;
213 int high_sierra = 0;
214 int iso_bsize;
215 int iso_blknum;
216 int joliet_level;
217 struct iso_volume_descriptor *vdp = 0;
218 struct iso_primary_descriptor *pri = NULL;
219 struct iso_sierra_primary_descriptor *pri_sierra = NULL;
220 struct iso_supplementary_descriptor *sup = NULL;
221 struct iso_directory_record *rootp;
222 int logical_block_size, ssector;
223 struct g_consumer *cp;
224 struct bufobj *bo;
225 char *cs_local, *cs_disk;
226
227 dev = devvp->v_rdev;
228 dev_ref(dev);
229 DROP_GIANT();
230 g_topology_lock();
231 error = g_vfs_open(devvp, &cp, "cd9660", 0);
232 g_topology_unlock();
233 PICKUP_GIANT();
234 VOP_UNLOCK(devvp, 0);
235 if (error)
236 goto out;
237 if (devvp->v_rdev->si_iosize_max != 0)
238 mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
239 if (mp->mnt_iosize_max > MAXPHYS)
240 mp->mnt_iosize_max = MAXPHYS;
241
242 bo = &devvp->v_bufobj;
243
244 /* This is the "logical sector size". The standard says this
245 * should be 2048 or the physical sector size on the device,
246 * whichever is greater.
247 */
248 if ((ISO_DEFAULT_BLOCK_SIZE % cp->provider->sectorsize) != 0) {
249 error = EINVAL;
250 goto out;
251 }
252
253 iso_bsize = cp->provider->sectorsize;
254
255 joliet_level = 0;
256 if (1 != vfs_scanopt(mp->mnt_optnew, "ssector", "%d", &ssector))
257 ssector = 0;
258 for (iso_blknum = 16 + ssector;
259 iso_blknum < 100 + ssector;
260 iso_blknum++) {
261 if ((error = bread(devvp, iso_blknum * btodb(ISO_DEFAULT_BLOCK_SIZE),
262 iso_bsize, NOCRED, &bp)) != 0)
263 goto out;
264
265 vdp = (struct iso_volume_descriptor *)bp->b_data;
266 if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) {
267 if (bcmp (vdp->id_sierra, ISO_SIERRA_ID,
268 sizeof vdp->id_sierra) != 0) {
269 error = EINVAL;
270 goto out;
271 } else
272 high_sierra = 1;
273 }
274 switch (isonum_711 (high_sierra? vdp->type_sierra: vdp->type)){
275 case ISO_VD_PRIMARY:
276 if (pribp == NULL) {
277 pribp = bp;
278 bp = NULL;
279 pri = (struct iso_primary_descriptor *)vdp;
280 pri_sierra =
281 (struct iso_sierra_primary_descriptor *)vdp;
282 }
283 break;
284
285 case ISO_VD_SUPPLEMENTARY:
286 if (supbp == NULL) {
287 supbp = bp;
288 bp = NULL;
289 sup = (struct iso_supplementary_descriptor *)vdp;
290
291 if (!vfs_flagopt(mp->mnt_optnew, "nojoliet", NULL, 0)) {
292 if (bcmp(sup->escape, "%/@", 3) == 0)
293 joliet_level = 1;
294 if (bcmp(sup->escape, "%/C", 3) == 0)
295 joliet_level = 2;
296 if (bcmp(sup->escape, "%/E", 3) == 0)
297 joliet_level = 3;
298
299 if ((isonum_711 (sup->flags) & 1) &&
300 !vfs_flagopt(mp->mnt_optnew, "brokenjoliet", NULL, 0))
301 joliet_level = 0;
302 }
303 }
304 break;
305
306 case ISO_VD_END:
307 goto vd_end;
308
309 default:
310 break;
311 }
312 if (bp) {
313 brelse(bp);
314 bp = NULL;
315 }
316 }
317 vd_end:
318 if (bp) {
319 brelse(bp);
320 bp = NULL;
321 }
322
323 if (pri == NULL) {
324 error = EINVAL;
325 goto out;
326 }
327
328 logical_block_size =
329 isonum_723 (high_sierra?
330 pri_sierra->logical_block_size:
331 pri->logical_block_size);
332
333 if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE
334 || (logical_block_size & (logical_block_size - 1)) != 0) {
335 error = EINVAL;
336 goto out;
337 }
338
339 rootp = (struct iso_directory_record *)
340 (high_sierra?
341 pri_sierra->root_directory_record:
342 pri->root_directory_record);
343
344 isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK | M_ZERO);
345 isomp->im_cp = cp;
346 isomp->im_bo = bo;
347 isomp->logical_block_size = logical_block_size;
348 isomp->volume_space_size =
349 isonum_733 (high_sierra?
350 pri_sierra->volume_space_size:
351 pri->volume_space_size);
352 isomp->joliet_level = 0;
353 /*
354 * Since an ISO9660 multi-session CD can also access previous
355 * sessions, we have to include them into the space consider-
356 * ations. This doesn't yield a very accurate number since
357 * parts of the old sessions might be inaccessible now, but we
358 * can't do much better. This is also important for the NFS
359 * filehandle validation.
360 */
361 isomp->volume_space_size += ssector;
362 bcopy (rootp, isomp->root, sizeof isomp->root);
363 isomp->root_extent = isonum_733 (rootp->extent);
364 isomp->root_size = isonum_733 (rootp->size);
365
366 isomp->im_bmask = logical_block_size - 1;
367 isomp->im_bshift = ffs(logical_block_size) - 1;
368
369 pribp->b_flags |= B_AGE;
370 brelse(pribp);
371 pribp = NULL;
372
373 mp->mnt_data = isomp;
374 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev);
375 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
376 mp->mnt_maxsymlinklen = 0;
377 MNT_ILOCK(mp);
378 mp->mnt_flag |= MNT_LOCAL;
379 mp->mnt_kern_flag |= MNTK_MPSAFE | MNTK_LOOKUP_SHARED |
380 MNTK_EXTENDED_SHARED;
381 MNT_IUNLOCK(mp);
382 isomp->im_mountp = mp;
383 isomp->im_dev = dev;
384 isomp->im_devvp = devvp;
385
386 vfs_flagopt(mp->mnt_optnew, "norrip", &isomp->im_flags, ISOFSMNT_NORRIP);
387 vfs_flagopt(mp->mnt_optnew, "gens", &isomp->im_flags, ISOFSMNT_GENS);
388 vfs_flagopt(mp->mnt_optnew, "extatt", &isomp->im_flags, ISOFSMNT_EXTATT);
389 vfs_flagopt(mp->mnt_optnew, "nojoliet", &isomp->im_flags, ISOFSMNT_NOJOLIET);
390 vfs_flagopt(mp->mnt_optnew, "kiconv", &isomp->im_flags, ISOFSMNT_KICONV);
391
392 /* Check the Rock Ridge Extension support */
393 if (!(isomp->im_flags & ISOFSMNT_NORRIP)) {
394 if ((error = bread(isomp->im_devvp,
395 (isomp->root_extent + isonum_711(rootp->ext_attr_length)) <<
396 (isomp->im_bshift - DEV_BSHIFT),
397 isomp->logical_block_size, NOCRED, &bp)) != 0)
398 goto out;
399
400 rootp = (struct iso_directory_record *)bp->b_data;
401
402 if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) {
403 isomp->im_flags |= ISOFSMNT_NORRIP;
404 } else {
405 isomp->im_flags &= ~ISOFSMNT_GENS;
406 }
407
408 /*
409 * The contents are valid,
410 * but they will get reread as part of another vnode, so...
411 */
412 bp->b_flags |= B_AGE;
413 brelse(bp);
414 bp = NULL;
415 }
416
417 if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) {
418 cs_local = vfs_getopts(mp->mnt_optnew, "cs_local", &error);
419 if (error)
420 goto out;
421 cs_disk = vfs_getopts(mp->mnt_optnew, "cs_disk", &error);
422 if (error)
423 goto out;
424 cd9660_iconv->open(cs_local, cs_disk, &isomp->im_d2l);
425 cd9660_iconv->open(cs_disk, cs_local, &isomp->im_l2d);
426 } else {
427 isomp->im_d2l = NULL;
428 isomp->im_l2d = NULL;
429 }
430
431 if (high_sierra) {
432 /* this effectively ignores all the mount flags */
433 if (bootverbose)
434 log(LOG_INFO, "cd9660: High Sierra Format\n");
435 isomp->iso_ftype = ISO_FTYPE_HIGH_SIERRA;
436 } else
437 switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) {
438 default:
439 isomp->iso_ftype = ISO_FTYPE_DEFAULT;
440 break;
441 case ISOFSMNT_GENS|ISOFSMNT_NORRIP:
442 isomp->iso_ftype = ISO_FTYPE_9660;
443 break;
444 case 0:
445 if (bootverbose)
446 log(LOG_INFO, "cd9660: RockRidge Extension\n");
447 isomp->iso_ftype = ISO_FTYPE_RRIP;
448 break;
449 }
450
451 /* Decide whether to use the Joliet descriptor */
452
453 if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) {
454 if (bootverbose)
455 log(LOG_INFO, "cd9660: Joliet Extension (Level %d)\n",
456 joliet_level);
457 rootp = (struct iso_directory_record *)
458 sup->root_directory_record;
459 bcopy (rootp, isomp->root, sizeof isomp->root);
460 isomp->root_extent = isonum_733 (rootp->extent);
461 isomp->root_size = isonum_733 (rootp->size);
462 isomp->joliet_level = joliet_level;
463 supbp->b_flags |= B_AGE;
464 }
465
466 if (supbp) {
467 brelse(supbp);
468 supbp = NULL;
469 }
470
471 return 0;
472out:
473 if (bp)
474 brelse(bp);
475 if (pribp)
476 brelse(pribp);
477 if (supbp)
478 brelse(supbp);
479 if (cp != NULL) {
480 DROP_GIANT();
481 g_topology_lock();
482 g_vfs_close(cp);
483 g_topology_unlock();
484 PICKUP_GIANT();
485 }
486 if (isomp) {
487 free((caddr_t)isomp, M_ISOFSMNT);
488 mp->mnt_data = NULL;
489 }
490 dev_rel(dev);
491 return error;
492}
493
494/*
495 * unmount system call
496 */
497static int
498cd9660_unmount(mp, mntflags)
499 struct mount *mp;
500 int mntflags;
501{
502 struct iso_mnt *isomp;
503 int error, flags = 0;
504
505 if (mntflags & MNT_FORCE)
506 flags |= FORCECLOSE;
507 if ((error = vflush(mp, 0, flags, curthread)))
508 return (error);
509
510 isomp = VFSTOISOFS(mp);
511
512 if (isomp->im_flags & ISOFSMNT_KICONV && cd9660_iconv) {
513 if (isomp->im_d2l)
514 cd9660_iconv->close(isomp->im_d2l);
515 if (isomp->im_l2d)
516 cd9660_iconv->close(isomp->im_l2d);
517 }
518 DROP_GIANT();
519 g_topology_lock();
520 g_vfs_close(isomp->im_cp);
521 g_topology_unlock();
522 PICKUP_GIANT();
523 vrele(isomp->im_devvp);
524 dev_rel(isomp->im_dev);
525 free((caddr_t)isomp, M_ISOFSMNT);
526 mp->mnt_data = NULL;
527 MNT_ILOCK(mp);
528 mp->mnt_flag &= ~MNT_LOCAL;
529 MNT_IUNLOCK(mp);
530 return (error);
531}
532
533/*
534 * Return root of a filesystem
535 */
536static int
537cd9660_root(mp, flags, vpp)
538 struct mount *mp;
539 int flags;
540 struct vnode **vpp;
541{
542 struct iso_mnt *imp = VFSTOISOFS(mp);
543 struct iso_directory_record *dp =
544 (struct iso_directory_record *)imp->root;
545 ino_t ino = isodirino(dp, imp);
546
547 /*
548 * With RRIP we must use the `.' entry of the root directory.
549 * Simply tell vget, that it's a relocated directory.
550 */
551 return (cd9660_vget_internal(mp, ino, flags, vpp,
552 imp->iso_ftype == ISO_FTYPE_RRIP, dp));
553}
554
555/*
556 * Get filesystem statistics.
557 */
558static int
559cd9660_statfs(mp, sbp)
560 struct mount *mp;
561 struct statfs *sbp;
562{
563 struct iso_mnt *isomp;
564
565 isomp = VFSTOISOFS(mp);
566
567 sbp->f_bsize = isomp->logical_block_size;
568 sbp->f_iosize = sbp->f_bsize; /* XXX */
569 sbp->f_blocks = isomp->volume_space_size;
570 sbp->f_bfree = 0; /* total free blocks */
571 sbp->f_bavail = 0; /* blocks free for non superuser */
572 sbp->f_files = 0; /* total files */
573 sbp->f_ffree = 0; /* free file nodes */
574 return 0;
575}
576
577/*
578 * File handle to vnode
579 *
580 * Have to be really careful about stale file handles:
581 * - check that the inode number is in range
582 * - call iget() to get the locked inode
583 * - check for an unallocated inode (i_mode == 0)
584 * - check that the generation number matches
585 */
586
587/* ARGSUSED */
588static int
589cd9660_fhtovp(mp, fhp, vpp)
590 struct mount *mp;
591 struct fid *fhp;
592 struct vnode **vpp;
593{
594 struct ifid ifh;
595 struct iso_node *ip;
596 struct vnode *nvp;
597 int error;
598
599 memcpy(&ifh, fhp, sizeof(ifh));
600
601#ifdef ISOFS_DBG
602 printf("fhtovp: ino %d, start %ld\n",
603 ifh.ifid_ino, ifh.ifid_start);
604#endif
605
606 if ((error = VFS_VGET(mp, ifh.ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
607 *vpp = NULLVP;
608 return (error);
609 }
610 ip = VTOI(nvp);
611 if (ip->inode.iso_mode == 0) {
612 vput(nvp);
613 *vpp = NULLVP;
614 return (ESTALE);
615 }
616 *vpp = nvp;
617 vnode_create_vobject(*vpp, ip->i_size, curthread);
618 return (0);
619}
620
621static int
622cd9660_vget(mp, ino, flags, vpp)
623 struct mount *mp;
624 ino_t ino;
625 int flags;
626 struct vnode **vpp;
627{
628
629 /*
630 * XXXX
631 * It would be nice if we didn't always set the `relocated' flag
632 * and force the extra read, but I don't want to think about fixing
633 * that right now.
634 */
635 return (cd9660_vget_internal(mp, ino, flags, vpp,
636#if 0
637 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP,
638#else
639 0,
640#endif
641 (struct iso_directory_record *)0));
642}
643
644int
645cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
646 struct mount *mp;
647 ino_t ino;
648 int flags;
649 struct vnode **vpp;
650 int relocated;
651 struct iso_directory_record *isodir;
652{
653 struct iso_mnt *imp;
654 struct iso_node *ip;
655 struct buf *bp;
656 struct vnode *vp;
657 struct cdev *dev;
658 int error;
659 struct thread *td;
660
661 td = curthread;
662 error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
663 if (error || *vpp != NULL)
664 return (error);
665
666 /*
667 * We must promote to an exclusive lock for vnode creation. This
668 * can happen if lookup is passed LOCKSHARED.
669 */
670 if ((flags & LK_TYPE_MASK) == LK_SHARED) {
671 flags &= ~LK_TYPE_MASK;
672 flags |= LK_EXCLUSIVE;
673 }
674
675 /*
676 * We do not lock vnode creation as it is believed to be too
677 * expensive for such rare case as simultaneous creation of vnode
678 * for same ino by different processes. We just allow them to race
679 * and check later to decide who wins. Let the race begin!
680 */
681
682 imp = VFSTOISOFS(mp);
683 dev = imp->im_dev;
684
685 /* Allocate a new vnode/iso_node. */
686 if ((error = getnewvnode("isofs", mp, &cd9660_vnodeops, &vp)) != 0) {
687 *vpp = NULLVP;
688 return (error);
689 }
690 ip = malloc(sizeof(struct iso_node), M_ISOFSNODE,
691 M_WAITOK | M_ZERO);
692 vp->v_data = ip;
693 ip->i_vnode = vp;
694 ip->i_number = ino;
695
696 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
697 error = insmntque(vp, mp);
698 if (error != 0) {
699 free(ip, M_ISOFSNODE);
700 *vpp = NULLVP;
701 return (error);
702 }
703 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
704 if (error || *vpp != NULL)
705 return (error);
706
707 if (isodir == 0) {
708 int lbn, off;
709
710 lbn = lblkno(imp, ino);
711 if (lbn >= imp->volume_space_size) {
712 vput(vp);
713 printf("fhtovp: lbn exceed volume space %d\n", lbn);
714 return (ESTALE);
715 }
716
717 off = blkoff(imp, ino);
718 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
719 vput(vp);
720 printf("fhtovp: crosses block boundary %d\n",
721 off + ISO_DIRECTORY_RECORD_SIZE);
722 return (ESTALE);
723 }
724
725 error = bread(imp->im_devvp,
726 lbn << (imp->im_bshift - DEV_BSHIFT),
727 imp->logical_block_size, NOCRED, &bp);
728 if (error) {
729 vput(vp);
730 brelse(bp);
731 printf("fhtovp: bread error %d\n",error);
732 return (error);
733 }
734 isodir = (struct iso_directory_record *)(bp->b_data + off);
735
736 if (off + isonum_711(isodir->length) >
737 imp->logical_block_size) {
738 vput(vp);
739 if (bp != 0)
740 brelse(bp);
741 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
742 off +isonum_711(isodir->length), off,
743 isonum_711(isodir->length));
744 return (ESTALE);
745 }
746
747#if 0
748 if (isonum_733(isodir->extent) +
749 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
750 if (bp != 0)
751 brelse(bp);
752 printf("fhtovp: file start miss %d vs %d\n",
753 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
754 ifhp->ifid_start);
755 return (ESTALE);
756 }
757#endif
758 } else
759 bp = 0;
760
761 ip->i_mnt = imp;
762
763 if (relocated) {
764 /*
765 * On relocated directories we must
766 * read the `.' entry out of a dir.
767 */
768 ip->iso_start = ino >> imp->im_bshift;
769 if (bp != 0)
770 brelse(bp);
771 if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
772 vput(vp);
773 return (error);
774 }
775 isodir = (struct iso_directory_record *)bp->b_data;
776 }
777
778 ip->iso_extent = isonum_733(isodir->extent);
779 ip->i_size = isonum_733(isodir->size);
780 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent;
781
782 /*
783 * Setup time stamp, attribute
784 */
785 vp->v_type = VNON;
786 switch (imp->iso_ftype) {
787 default: /* ISO_FTYPE_9660 */
788 {
789 struct buf *bp2;
790 int off;
791 if ((imp->im_flags & ISOFSMNT_EXTATT)
792 && (off = isonum_711(isodir->ext_attr_length)))
793 cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL,
794 &bp2);
795 else
796 bp2 = NULL;
797 cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660);
798 cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660);
799 if (bp2)
800 brelse(bp2);
801 break;
802 }
803 case ISO_FTYPE_RRIP:
804 cd9660_rrip_analyze(isodir, ip, imp);
805 break;
806 }
807
808 if (bp != 0)
809 brelse(bp);
810
811 /*
812 * Initialize the associated vnode
813 */
814 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) {
815 case VFIFO:
816 vp->v_op = &cd9660_fifoops;
817 break;
818 default:
819 VN_LOCK_ASHARE(vp);
820 break;
821 }
822
823 if (ip->iso_extent == imp->root_extent)
824 vp->v_vflag |= VV_ROOT;
825
826 /*
827 * XXX need generation number?
828 */
829
830 *vpp = vp;
831 return (0);
832}
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