1 /*- 2 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/fs/udf/udf_vfsops.c,v 1.16 2003/11/05 06:56:08 scottl Exp $ 27 * $DragonFly: src/sys/vfs/udf/udf_vfsops.c,v 1.26 2007/05/09 00:53:36 dillon Exp $ 28 */ 29 30 /* udf_vfsops.c */ 31 /* Implement the VFS side of things */ 32 33 /* 34 * Ok, here's how it goes. The UDF specs are pretty clear on how each data 35 * structure is made up, but not very clear on how they relate to each other. 36 * Here is the skinny... This demostrates a filesystem with one file in the 37 * root directory. Subdirectories are treated just as normal files, but they 38 * have File Id Descriptors of their children as their file data. As for the 39 * Anchor Volume Descriptor Pointer, it can exist in two of the following three 40 * places: sector 256, sector n (the max sector of the disk), or sector 41 * n - 256. It's a pretty good bet that one will exist at sector 256 though. 42 * One caveat is unclosed CD media. For that, sector 256 cannot be written, 43 * so the Anchor Volume Descriptor Pointer can exist at sector 512 until the 44 * media is closed. 45 * 46 * Sector: 47 * 256: 48 * n: Anchor Volume Descriptor Pointer 49 * n - 256: | 50 * | 51 * |-->Main Volume Descriptor Sequence 52 * | | 53 * | | 54 * | |-->Logical Volume Descriptor 55 * | | 56 * |-->Partition Descriptor | 57 * | | 58 * | | 59 * |-->Fileset Descriptor 60 * | 61 * | 62 * |-->Root Dir File Entry 63 * | 64 * | 65 * |-->File data: 66 * File Id Descriptor 67 * | 68 * | 69 * |-->File Entry 70 * | 71 * | 72 * |-->File data 73 */ 74 75 #include <sys/types.h> 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/uio.h> 79 #include <sys/buf.h> 80 #include <sys/conf.h> 81 #include <sys/fcntl.h> 82 #include <sys/module.h> 83 #include <sys/kernel.h> 84 #include <sys/malloc.h> 85 #include <sys/mount.h> 86 #include <sys/nlookup.h> 87 #include <sys/proc.h> 88 #include <sys/queue.h> 89 #include <sys/vnode.h> 90 91 #include <vfs/udf/ecma167-udf.h> 92 #include <vfs/udf/osta.h> 93 #include <vfs/udf/udf.h> 94 #include <vfs/udf/udf_mount.h> 95 96 extern struct vop_ops udf_vnode_vops; 97 98 MALLOC_DEFINE(M_UDFNODE, "UDF node", "UDF node structure"); 99 MALLOC_DEFINE(M_UDFMOUNT, "UDF mount", "UDF mount structure"); 100 MALLOC_DEFINE(M_UDFFENTRY, "UDF fentry", "UDF file entry structure"); 101 102 static int udf_mount(struct mount *, char *, caddr_t, struct ucred *); 103 static int udf_unmount(struct mount *, int); 104 static int udf_root(struct mount *, struct vnode **); 105 static int udf_statfs(struct mount *, struct statfs *, struct ucred *); 106 static int udf_fhtovp(struct mount *, struct fid *, struct vnode **); 107 static int udf_vptofh(struct vnode *, struct fid *); 108 109 static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *); 110 111 static struct vfsops udf_vfsops = { 112 .vfs_mount = udf_mount, 113 .vfs_unmount = udf_unmount, 114 .vfs_root = udf_root, 115 .vfs_statfs = udf_statfs, 116 .vfs_sync = vfs_stdsync, 117 .vfs_vget = udf_vget, 118 .vfs_fhtovp = udf_fhtovp, 119 .vfs_vptofh = udf_vptofh 120 }; 121 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 122 123 MODULE_VERSION(udf, 1); 124 125 static int udf_mountfs(struct vnode *, struct mount *); 126 127 static int 128 udf_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) 129 { 130 struct vnode *devvp; /* vnode of the mount device */ 131 struct udf_args args; 132 struct udf_mnt *imp = 0; 133 size_t size; 134 int error; 135 struct nlookupdata nd; 136 137 if ((mp->mnt_flag & MNT_RDONLY) == 0) 138 return (EROFS); 139 140 /* 141 * No root filesystem support. Probably not a big deal, since the 142 * bootloader doesn't understand UDF. 143 */ 144 if (mp->mnt_flag & MNT_ROOTFS) 145 return (ENOTSUP); 146 147 if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args)))) 148 return(error); 149 150 if (mp->mnt_flag & MNT_UPDATE) { 151 imp = VFSTOUDFFS(mp); 152 if (args.fspec == NULL) 153 return(vfs_export(mp, &imp->im_export, &args.export)); 154 } 155 156 /* Check that the mount device exists */ 157 devvp = NULL; 158 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); 159 if (error == 0) 160 error = nlookup(&nd); 161 if (error == 0) 162 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 163 nlookup_done(&nd); 164 if (error) 165 return (error); 166 167 if (vn_isdisk(devvp, &error) == 0) { 168 vrele(devvp); 169 return(error); 170 } 171 172 /* Check the access rights on the mount device */ 173 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 174 error = VOP_ACCESS(devvp, VREAD, cred); 175 if (error) 176 error = suser_cred(cred, 0); 177 if (error) { 178 vput(devvp); 179 return(error); 180 } 181 vn_unlock(devvp); 182 183 if ((error = udf_mountfs(devvp, mp))) { 184 vrele(devvp); 185 return(error); 186 } 187 188 imp = VFSTOUDFFS(mp); 189 190 imp->im_flags = args.flags; 191 192 copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 193 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 194 udf_statfs(mp, &mp->mnt_stat, cred); 195 return(0); 196 } 197 198 /* 199 * Check the descriptor tag for both the correct id and correct checksum. 200 * Return zero if all is good, EINVAL if not. 201 */ 202 int 203 udf_checktag(struct desc_tag *tag, uint16_t id) 204 { 205 uint8_t *itag; 206 uint8_t i, cksum = 0; 207 208 itag = (uint8_t *)tag; 209 210 if (tag->id != id) 211 return(EINVAL); 212 213 for (i = 0; i < 15; i++) 214 cksum = cksum + itag[i]; 215 cksum = cksum - itag[4]; 216 217 if (cksum == tag->cksum) 218 return(0); 219 220 return(EINVAL); 221 } 222 223 static int 224 udf_mountfs(struct vnode *devvp, struct mount *mp) 225 { 226 struct buf *bp = NULL; 227 struct anchor_vdp avdp; 228 struct udf_mnt *udfmp = NULL; 229 struct part_desc *pd; 230 struct logvol_desc *lvd; 231 struct fileset_desc *fsd; 232 struct file_entry *root_fentry; 233 cdev_t dev; 234 uint32_t sector, size, mvds_start, mvds_end; 235 uint32_t fsd_offset = 0; 236 uint16_t part_num = 0, fsd_part = 0; 237 int error = EINVAL, needclose = 0; 238 int logvol_found = 0, part_found = 0, fsd_found = 0; 239 int bsize; 240 241 /* 242 * Disallow multiple mounts of the same device. Flush the buffer 243 * cache for the device. 244 */ 245 if ((error = vfs_mountedon(devvp))) 246 return(error); 247 if (count_udev(devvp->v_umajor, devvp->v_uminor) > 0) 248 return(EBUSY); 249 if ((error = vinvalbuf(devvp, V_SAVE, 0, 0))) 250 return(error); 251 252 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 253 error = VOP_OPEN(devvp, FREAD, FSCRED, NULL); 254 vn_unlock(devvp); 255 if (error) 256 return(error); 257 needclose = 1; 258 dev = devvp->v_rdev; 259 260 udfmp = kmalloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO); 261 262 mp->mnt_data = (qaddr_t)udfmp; 263 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 264 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 265 mp->mnt_maxsymlinklen = 0; 266 mp->mnt_flag |= MNT_LOCAL; 267 udfmp->im_mountp = mp; 268 udfmp->im_dev = dev; 269 udfmp->im_devvp = devvp; 270 271 bsize = 2048; /* XXX Should probe the media for it's size */ 272 273 /* 274 * Get the Anchor Volume Descriptor Pointer from sector 256. 275 * XXX Should also check sector n - 256, n, and 512. 276 */ 277 sector = 256; 278 if ((error = bread(devvp, (off_t)sector * bsize, bsize, &bp)) != 0) 279 goto bail; 280 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 281 goto bail; 282 283 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 284 brelse(bp); 285 bp = NULL; 286 287 /* 288 * Extract the Partition Descriptor and Logical Volume Descriptor 289 * from the Volume Descriptor Sequence. 290 * XXX Should we care about the partition type right now? 291 * XXX What about multiple partitions? 292 */ 293 mvds_start = avdp.main_vds_ex.loc; 294 mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize; 295 for (sector = mvds_start; sector < mvds_end; sector++) { 296 if ((error = bread(devvp, (off_t)sector * bsize, bsize, 297 &bp)) != 0) { 298 kprintf("Can't read sector %d of VDS\n", sector); 299 goto bail; 300 } 301 lvd = (struct logvol_desc *)bp->b_data; 302 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 303 udfmp->bsize = lvd->lb_size; 304 udfmp->bmask = udfmp->bsize - 1; 305 udfmp->bshift = ffs(udfmp->bsize) - 1; 306 fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num; 307 fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num; 308 if (udf_find_partmaps(udfmp, lvd)) 309 break; 310 logvol_found = 1; 311 } 312 pd = (struct part_desc *)bp->b_data; 313 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 314 part_found = 1; 315 part_num = pd->part_num; 316 udfmp->part_len = pd->part_len; 317 udfmp->part_start = pd->start_loc; 318 } 319 320 brelse(bp); 321 bp = NULL; 322 if ((part_found) && (logvol_found)) 323 break; 324 } 325 326 if (!part_found || !logvol_found) { 327 error = EINVAL; 328 goto bail; 329 } 330 331 if (fsd_part != part_num) { 332 kprintf("FSD does not lie within the partition!\n"); 333 error = EINVAL; 334 goto bail; 335 } 336 337 338 /* 339 * Grab the Fileset Descriptor 340 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 341 * me in the right direction here. 342 */ 343 sector = udfmp->part_start + fsd_offset; 344 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 345 kprintf("Cannot read sector %d of FSD\n", sector); 346 goto bail; 347 } 348 fsd = (struct fileset_desc *)bp->b_data; 349 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 350 fsd_found = 1; 351 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 352 sizeof(struct long_ad)); 353 } 354 355 brelse(bp); 356 bp = NULL; 357 358 if (!fsd_found) { 359 kprintf("Couldn't find the fsd\n"); 360 error = EINVAL; 361 goto bail; 362 } 363 364 vfs_add_vnodeops(mp, &udf_vnode_vops, &mp->mnt_vn_norm_ops); 365 366 /* 367 * Find the file entry for the root directory. 368 */ 369 sector = udfmp->root_icb.loc.lb_num + udfmp->part_start; 370 size = udfmp->root_icb.len; 371 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 372 kprintf("Cannot read sector %d\n", sector); 373 goto bail; 374 } 375 376 root_fentry = (struct file_entry *)bp->b_data; 377 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 378 kprintf("Invalid root file entry!\n"); 379 goto bail; 380 } 381 382 brelse(bp); 383 bp = NULL; 384 385 lwkt_token_init(&udfmp->hash_token); 386 udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz); 387 388 return(0); 389 390 bail: 391 if (udfmp != NULL) 392 kfree(udfmp, M_UDFMOUNT); 393 if (bp != NULL) 394 brelse(bp); 395 if (needclose) 396 VOP_CLOSE(devvp, FREAD); 397 return(error); 398 } 399 400 static int 401 udf_unmount(struct mount *mp, int mntflags) 402 { 403 struct udf_mnt *udfmp; 404 int error, flags = 0; 405 406 udfmp = VFSTOUDFFS(mp); 407 408 if (mntflags & MNT_FORCE) 409 flags |= FORCECLOSE; 410 411 if ((error = vflush(mp, 0, flags))) 412 return (error); 413 414 udfmp->im_devvp->v_rdev->si_mountpoint = NULL; 415 error = VOP_CLOSE(udfmp->im_devvp, FREAD); 416 vrele(udfmp->im_devvp); 417 418 if (udfmp->s_table) 419 kfree(udfmp->s_table, M_UDFMOUNT); 420 if (udfmp->hashtbl) 421 kfree(udfmp->hashtbl, M_UDFMOUNT); 422 kfree(udfmp, M_UDFMOUNT); 423 424 mp->mnt_data = (qaddr_t)0; 425 mp->mnt_flag &= ~MNT_LOCAL; 426 427 return (error); 428 } 429 430 static int 431 udf_root(struct mount *mp, struct vnode **vpp) 432 { 433 struct udf_mnt *udfmp; 434 struct vnode *vp; 435 ino_t id; 436 int error; 437 438 udfmp = VFSTOUDFFS(mp); 439 440 id = udf_getid(&udfmp->root_icb); 441 442 error = udf_vget(mp, id, vpp); 443 if (error) 444 return(error); 445 446 vp = *vpp; 447 vp->v_flag |= VROOT; 448 udfmp->root_vp = vp; 449 450 return(0); 451 } 452 453 static int 454 udf_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 455 { 456 struct udf_mnt *udfmp; 457 458 udfmp = VFSTOUDFFS(mp); 459 460 sbp->f_bsize = udfmp->bsize; 461 sbp->f_iosize = udfmp->bsize; 462 sbp->f_blocks = udfmp->part_len; 463 sbp->f_bfree = 0; 464 sbp->f_bavail = 0; 465 sbp->f_files = 0; 466 sbp->f_ffree = 0; 467 if (sbp != &mp->mnt_stat) { 468 sbp->f_type = mp->mnt_vfc->vfc_typenum; 469 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 470 } 471 472 return(0); 473 } 474 475 int 476 udf_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 477 { 478 struct buf *bp; 479 struct vnode *devvp; 480 struct udf_mnt *udfmp; 481 struct thread *td; 482 struct vnode *vp; 483 struct udf_node *unode; 484 struct file_entry *fe; 485 int error, sector, size; 486 487 td = curthread; 488 udfmp = VFSTOUDFFS(mp); 489 490 /* See if we already have this in the cache */ 491 if ((error = udf_hashlookup(udfmp, ino, vpp)) != 0) 492 return(error); 493 if (*vpp != NULL) { 494 return(0); 495 } 496 497 /* 498 * Allocate memory and check the tag id's before grabbing a new 499 * vnode, since it's hard to roll back if there is a problem. 500 */ 501 unode = kmalloc(sizeof(*unode), M_UDFNODE, M_WAITOK | M_ZERO); 502 503 /* 504 * Copy in the file entry. Per the spec, the size can only be 1 block. 505 */ 506 sector = ino + udfmp->part_start; 507 devvp = udfmp->im_devvp; 508 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 509 kprintf("Cannot read sector %d\n", sector); 510 kfree(unode, M_UDFNODE); 511 return(error); 512 } 513 514 fe = (struct file_entry *)bp->b_data; 515 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 516 kprintf("Invalid file entry!\n"); 517 kfree(unode, M_UDFNODE); 518 brelse(bp); 519 return(ENOMEM); 520 } 521 size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad; 522 unode->fentry = kmalloc(size, M_UDFFENTRY, M_WAITOK | M_ZERO); 523 524 bcopy(bp->b_data, unode->fentry, size); 525 526 brelse(bp); 527 bp = NULL; 528 529 if ((error = udf_allocv(mp, &vp))) { 530 kprintf("Error from udf_allocv\n"); 531 kfree(unode, M_UDFNODE); 532 return(error); 533 } 534 535 unode->i_vnode = vp; 536 unode->hash_id = ino; 537 unode->i_devvp = udfmp->im_devvp; 538 unode->i_dev = udfmp->im_dev; 539 unode->udfmp = udfmp; 540 vp->v_data = unode; 541 vref(udfmp->im_devvp); 542 udf_hashins(unode); 543 544 switch (unode->fentry->icbtag.file_type) { 545 default: 546 vp->v_type = VBAD; 547 break; 548 case 4: 549 vp->v_type = VDIR; 550 break; 551 case 5: 552 vp->v_type = VREG; 553 break; 554 case 6: 555 vp->v_type = VBLK; 556 break; 557 case 7: 558 vp->v_type = VCHR; 559 break; 560 case 9: 561 vp->v_type = VFIFO; 562 break; 563 case 10: 564 vp->v_type = VSOCK; 565 break; 566 case 12: 567 vp->v_type = VLNK; 568 break; 569 } 570 /* 571 * Locked and refd vnode returned 572 */ 573 *vpp = vp; 574 575 return(0); 576 } 577 578 struct ifid { 579 u_short ifid_len; 580 u_short ifid_pad; 581 int ifid_ino; 582 long ifid_start; 583 }; 584 585 static int 586 udf_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 587 { 588 struct ifid *ifhp; 589 struct vnode *nvp; 590 int error; 591 592 ifhp = (struct ifid *)fhp; 593 594 if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { 595 *vpp = NULLVP; 596 return(error); 597 } 598 599 *vpp = nvp; 600 return(0); 601 } 602 603 static int 604 udf_vptofh (struct vnode *vp, struct fid *fhp) 605 { 606 struct udf_node *node; 607 struct ifid *ifhp; 608 609 node = VTON(vp); 610 ifhp = (struct ifid *)fhp; 611 ifhp->ifid_len = sizeof(struct ifid); 612 ifhp->ifid_ino = node->hash_id; 613 614 return(0); 615 } 616 617 static int 618 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 619 { 620 union udf_pmap *pmap; 621 struct part_map_spare *pms; 622 struct regid *pmap_id; 623 struct buf *bp; 624 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 625 int ptype, psize, error; 626 unsigned int i; 627 628 for (i = 0; i < lvd->n_pm; i++) { 629 pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE]; 630 ptype = pmap->data[0]; 631 psize = pmap->data[1]; 632 if (((ptype != 1) && (ptype != 2)) || 633 ((psize != UDF_PMAP_SIZE) && (psize != 6))) { 634 kprintf("Invalid partition map found\n"); 635 return(1); 636 } 637 638 if (ptype == 1) { 639 /* Type 1 map. We don't care */ 640 continue; 641 } 642 643 /* Type 2 map. Gotta find out the details */ 644 pmap_id = (struct regid *)&pmap->data[4]; 645 bzero(®id_id[0], UDF_REGID_ID_SIZE); 646 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 647 648 if (bcmp(®id_id[0], "*UDF Sparable Partition", 649 UDF_REGID_ID_SIZE)) { 650 kprintf("Unsupported partition map: %s\n", ®id_id[0]); 651 return(1); 652 } 653 654 pms = &pmap->pms; 655 udfmp->s_table = kmalloc(pms->st_size, M_UDFMOUNT, 656 M_WAITOK | M_ZERO); 657 if (udfmp->s_table == NULL) 658 return(ENOMEM); 659 660 /* Calculate the number of sectors per packet. */ 661 /* XXX Logical or physical? */ 662 udfmp->p_sectors = pms->packet_len / udfmp->bsize; 663 664 /* 665 * XXX If reading the first Sparing Table fails, should look 666 * for another table. 667 */ 668 if ((error = udf_readlblks(udfmp, pms->st_loc[0], pms->st_size, 669 &bp)) != 0) { 670 if (bp) 671 brelse(bp); 672 kprintf("Failed to read Sparing Table at sector %d\n", 673 pms->st_loc[0]); 674 return(error); 675 } 676 bcopy(bp->b_data, udfmp->s_table, pms->st_size); 677 brelse(bp); 678 679 if (udf_checktag(&udfmp->s_table->tag, 0)) { 680 kprintf("Invalid sparing table found\n"); 681 return(EINVAL); 682 } 683 684 /* See how many valid entries there are here. The list is 685 * supposed to be sorted. 0xfffffff0 and higher are not valid 686 */ 687 for (i = 0; i < udfmp->s_table->rt_l; i++) { 688 udfmp->s_table_entries = i; 689 if (udfmp->s_table->entries[i].org >= 0xfffffff0) 690 break; 691 } 692 } 693 694 return(0); 695 } 696