99{
100 struct iso_args args;
101 struct export_args exp;
102 int error;
103
104 error = copyin(data, &args, sizeof args);
105 if (error)
106 return (error);
107 vfs_oexport_conv(&args.export, &exp);
108
109 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
110 ma = mount_arg(ma, "export", &exp, sizeof(exp));
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, flags, vpp)
590 struct mount *mp;
591 struct fid *fhp;
592 int flags;
593 struct vnode **vpp;
594{
595 struct ifid ifh;
596 struct iso_node *ip;
597 struct vnode *nvp;
598 int error;
599
600 memcpy(&ifh, fhp, sizeof(ifh));
601
602#ifdef ISOFS_DBG
603 printf("fhtovp: ino %d, start %ld\n",
604 ifh.ifid_ino, ifh.ifid_start);
605#endif
606
607 if ((error = VFS_VGET(mp, ifh.ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
608 *vpp = NULLVP;
609 return (error);
610 }
611 ip = VTOI(nvp);
612 if (ip->inode.iso_mode == 0) {
613 vput(nvp);
614 *vpp = NULLVP;
615 return (ESTALE);
616 }
617 *vpp = nvp;
618 vnode_create_vobject(*vpp, ip->i_size, curthread);
619 return (0);
620}
621
622static int
623cd9660_vget(mp, ino, flags, vpp)
624 struct mount *mp;
625 ino_t ino;
626 int flags;
627 struct vnode **vpp;
628{
629
630 /*
631 * XXXX
632 * It would be nice if we didn't always set the `relocated' flag
633 * and force the extra read, but I don't want to think about fixing
634 * that right now.
635 */
636 return (cd9660_vget_internal(mp, ino, flags, vpp,
637#if 0
638 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP,
639#else
640 0,
641#endif
642 (struct iso_directory_record *)0));
643}
644
645int
646cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
647 struct mount *mp;
648 ino_t ino;
649 int flags;
650 struct vnode **vpp;
651 int relocated;
652 struct iso_directory_record *isodir;
653{
654 struct iso_mnt *imp;
655 struct iso_node *ip;
656 struct buf *bp;
657 struct vnode *vp;
658 struct cdev *dev;
659 int error;
660 struct thread *td;
661
662 td = curthread;
663 error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
664 if (error || *vpp != NULL)
665 return (error);
666
667 /*
668 * We must promote to an exclusive lock for vnode creation. This
669 * can happen if lookup is passed LOCKSHARED.
670 */
671 if ((flags & LK_TYPE_MASK) == LK_SHARED) {
672 flags &= ~LK_TYPE_MASK;
673 flags |= LK_EXCLUSIVE;
674 }
675
676 /*
677 * We do not lock vnode creation as it is believed to be too
678 * expensive for such rare case as simultaneous creation of vnode
679 * for same ino by different processes. We just allow them to race
680 * and check later to decide who wins. Let the race begin!
681 */
682
683 imp = VFSTOISOFS(mp);
684 dev = imp->im_dev;
685
686 /* Allocate a new vnode/iso_node. */
687 if ((error = getnewvnode("isofs", mp, &cd9660_vnodeops, &vp)) != 0) {
688 *vpp = NULLVP;
689 return (error);
690 }
691 ip = malloc(sizeof(struct iso_node), M_ISOFSNODE,
692 M_WAITOK | M_ZERO);
693 vp->v_data = ip;
694 ip->i_vnode = vp;
695 ip->i_number = ino;
696
697 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
698 error = insmntque(vp, mp);
699 if (error != 0) {
700 free(ip, M_ISOFSNODE);
701 *vpp = NULLVP;
702 return (error);
703 }
704 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
705 if (error || *vpp != NULL)
706 return (error);
707
708 if (isodir == 0) {
709 int lbn, off;
710
711 lbn = lblkno(imp, ino);
712 if (lbn >= imp->volume_space_size) {
713 vput(vp);
714 printf("fhtovp: lbn exceed volume space %d\n", lbn);
715 return (ESTALE);
716 }
717
718 off = blkoff(imp, ino);
719 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
720 vput(vp);
721 printf("fhtovp: crosses block boundary %d\n",
722 off + ISO_DIRECTORY_RECORD_SIZE);
723 return (ESTALE);
724 }
725
726 error = bread(imp->im_devvp,
727 lbn << (imp->im_bshift - DEV_BSHIFT),
728 imp->logical_block_size, NOCRED, &bp);
729 if (error) {
730 vput(vp);
731 brelse(bp);
732 printf("fhtovp: bread error %d\n",error);
733 return (error);
734 }
735 isodir = (struct iso_directory_record *)(bp->b_data + off);
736
737 if (off + isonum_711(isodir->length) >
738 imp->logical_block_size) {
739 vput(vp);
740 if (bp != 0)
741 brelse(bp);
742 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
743 off +isonum_711(isodir->length), off,
744 isonum_711(isodir->length));
745 return (ESTALE);
746 }
747
748#if 0
749 if (isonum_733(isodir->extent) +
750 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
751 if (bp != 0)
752 brelse(bp);
753 printf("fhtovp: file start miss %d vs %d\n",
754 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
755 ifhp->ifid_start);
756 return (ESTALE);
757 }
758#endif
759 } else
760 bp = 0;
761
762 ip->i_mnt = imp;
763
764 if (relocated) {
765 /*
766 * On relocated directories we must
767 * read the `.' entry out of a dir.
768 */
769 ip->iso_start = ino >> imp->im_bshift;
770 if (bp != 0)
771 brelse(bp);
772 if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
773 vput(vp);
774 return (error);
775 }
776 isodir = (struct iso_directory_record *)bp->b_data;
777 }
778
779 ip->iso_extent = isonum_733(isodir->extent);
780 ip->i_size = isonum_733(isodir->size);
781 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent;
782
783 /*
784 * Setup time stamp, attribute
785 */
786 vp->v_type = VNON;
787 switch (imp->iso_ftype) {
788 default: /* ISO_FTYPE_9660 */
789 {
790 struct buf *bp2;
791 int off;
792 if ((imp->im_flags & ISOFSMNT_EXTATT)
793 && (off = isonum_711(isodir->ext_attr_length)))
794 cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL,
795 &bp2);
796 else
797 bp2 = NULL;
798 cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660);
799 cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660);
800 if (bp2)
801 brelse(bp2);
802 break;
803 }
804 case ISO_FTYPE_RRIP:
805 cd9660_rrip_analyze(isodir, ip, imp);
806 break;
807 }
808
809 if (bp != 0)
810 brelse(bp);
811
812 /*
813 * Initialize the associated vnode
814 */
815 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) {
816 case VFIFO:
817 vp->v_op = &cd9660_fifoops;
818 break;
819 default:
820 VN_LOCK_ASHARE(vp);
821 break;
822 }
823
824 if (ip->iso_extent == imp->root_extent)
825 vp->v_vflag |= VV_ROOT;
826
827 /*
828 * XXX need generation number?
829 */
830
831 *vpp = vp;
832 return (0);
833}
| 99{
100 struct iso_args args;
101 struct export_args exp;
102 int error;
103
104 error = copyin(data, &args, sizeof args);
105 if (error)
106 return (error);
107 vfs_oexport_conv(&args.export, &exp);
108
109 ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
110 ma = mount_arg(ma, "export", &exp, sizeof(exp));
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, flags, vpp)
590 struct mount *mp;
591 struct fid *fhp;
592 int flags;
593 struct vnode **vpp;
594{
595 struct ifid ifh;
596 struct iso_node *ip;
597 struct vnode *nvp;
598 int error;
599
600 memcpy(&ifh, fhp, sizeof(ifh));
601
602#ifdef ISOFS_DBG
603 printf("fhtovp: ino %d, start %ld\n",
604 ifh.ifid_ino, ifh.ifid_start);
605#endif
606
607 if ((error = VFS_VGET(mp, ifh.ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) {
608 *vpp = NULLVP;
609 return (error);
610 }
611 ip = VTOI(nvp);
612 if (ip->inode.iso_mode == 0) {
613 vput(nvp);
614 *vpp = NULLVP;
615 return (ESTALE);
616 }
617 *vpp = nvp;
618 vnode_create_vobject(*vpp, ip->i_size, curthread);
619 return (0);
620}
621
622static int
623cd9660_vget(mp, ino, flags, vpp)
624 struct mount *mp;
625 ino_t ino;
626 int flags;
627 struct vnode **vpp;
628{
629
630 /*
631 * XXXX
632 * It would be nice if we didn't always set the `relocated' flag
633 * and force the extra read, but I don't want to think about fixing
634 * that right now.
635 */
636 return (cd9660_vget_internal(mp, ino, flags, vpp,
637#if 0
638 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP,
639#else
640 0,
641#endif
642 (struct iso_directory_record *)0));
643}
644
645int
646cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
647 struct mount *mp;
648 ino_t ino;
649 int flags;
650 struct vnode **vpp;
651 int relocated;
652 struct iso_directory_record *isodir;
653{
654 struct iso_mnt *imp;
655 struct iso_node *ip;
656 struct buf *bp;
657 struct vnode *vp;
658 struct cdev *dev;
659 int error;
660 struct thread *td;
661
662 td = curthread;
663 error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
664 if (error || *vpp != NULL)
665 return (error);
666
667 /*
668 * We must promote to an exclusive lock for vnode creation. This
669 * can happen if lookup is passed LOCKSHARED.
670 */
671 if ((flags & LK_TYPE_MASK) == LK_SHARED) {
672 flags &= ~LK_TYPE_MASK;
673 flags |= LK_EXCLUSIVE;
674 }
675
676 /*
677 * We do not lock vnode creation as it is believed to be too
678 * expensive for such rare case as simultaneous creation of vnode
679 * for same ino by different processes. We just allow them to race
680 * and check later to decide who wins. Let the race begin!
681 */
682
683 imp = VFSTOISOFS(mp);
684 dev = imp->im_dev;
685
686 /* Allocate a new vnode/iso_node. */
687 if ((error = getnewvnode("isofs", mp, &cd9660_vnodeops, &vp)) != 0) {
688 *vpp = NULLVP;
689 return (error);
690 }
691 ip = malloc(sizeof(struct iso_node), M_ISOFSNODE,
692 M_WAITOK | M_ZERO);
693 vp->v_data = ip;
694 ip->i_vnode = vp;
695 ip->i_number = ino;
696
697 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
698 error = insmntque(vp, mp);
699 if (error != 0) {
700 free(ip, M_ISOFSNODE);
701 *vpp = NULLVP;
702 return (error);
703 }
704 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
705 if (error || *vpp != NULL)
706 return (error);
707
708 if (isodir == 0) {
709 int lbn, off;
710
711 lbn = lblkno(imp, ino);
712 if (lbn >= imp->volume_space_size) {
713 vput(vp);
714 printf("fhtovp: lbn exceed volume space %d\n", lbn);
715 return (ESTALE);
716 }
717
718 off = blkoff(imp, ino);
719 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) {
720 vput(vp);
721 printf("fhtovp: crosses block boundary %d\n",
722 off + ISO_DIRECTORY_RECORD_SIZE);
723 return (ESTALE);
724 }
725
726 error = bread(imp->im_devvp,
727 lbn << (imp->im_bshift - DEV_BSHIFT),
728 imp->logical_block_size, NOCRED, &bp);
729 if (error) {
730 vput(vp);
731 brelse(bp);
732 printf("fhtovp: bread error %d\n",error);
733 return (error);
734 }
735 isodir = (struct iso_directory_record *)(bp->b_data + off);
736
737 if (off + isonum_711(isodir->length) >
738 imp->logical_block_size) {
739 vput(vp);
740 if (bp != 0)
741 brelse(bp);
742 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n",
743 off +isonum_711(isodir->length), off,
744 isonum_711(isodir->length));
745 return (ESTALE);
746 }
747
748#if 0
749 if (isonum_733(isodir->extent) +
750 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
751 if (bp != 0)
752 brelse(bp);
753 printf("fhtovp: file start miss %d vs %d\n",
754 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
755 ifhp->ifid_start);
756 return (ESTALE);
757 }
758#endif
759 } else
760 bp = 0;
761
762 ip->i_mnt = imp;
763
764 if (relocated) {
765 /*
766 * On relocated directories we must
767 * read the `.' entry out of a dir.
768 */
769 ip->iso_start = ino >> imp->im_bshift;
770 if (bp != 0)
771 brelse(bp);
772 if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
773 vput(vp);
774 return (error);
775 }
776 isodir = (struct iso_directory_record *)bp->b_data;
777 }
778
779 ip->iso_extent = isonum_733(isodir->extent);
780 ip->i_size = isonum_733(isodir->size);
781 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent;
782
783 /*
784 * Setup time stamp, attribute
785 */
786 vp->v_type = VNON;
787 switch (imp->iso_ftype) {
788 default: /* ISO_FTYPE_9660 */
789 {
790 struct buf *bp2;
791 int off;
792 if ((imp->im_flags & ISOFSMNT_EXTATT)
793 && (off = isonum_711(isodir->ext_attr_length)))
794 cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL,
795 &bp2);
796 else
797 bp2 = NULL;
798 cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660);
799 cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660);
800 if (bp2)
801 brelse(bp2);
802 break;
803 }
804 case ISO_FTYPE_RRIP:
805 cd9660_rrip_analyze(isodir, ip, imp);
806 break;
807 }
808
809 if (bp != 0)
810 brelse(bp);
811
812 /*
813 * Initialize the associated vnode
814 */
815 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) {
816 case VFIFO:
817 vp->v_op = &cd9660_fifoops;
818 break;
819 default:
820 VN_LOCK_ASHARE(vp);
821 break;
822 }
823
824 if (ip->iso_extent == imp->root_extent)
825 vp->v_vflag |= VV_ROOT;
826
827 /*
828 * XXX need generation number?
829 */
830
831 *vpp = vp;
832 return (0);
833}
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