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 */ 28 29 /* udf_vfsops.c */ 30 /* Implement the VFS side of things */ 31 32 /* 33 * Ok, here's how it goes. The UDF specs are pretty clear on how each data 34 * structure is made up, but not very clear on how they relate to each other. 35 * Here is the skinny... This demostrates a filesystem with one file in the 36 * root directory. Subdirectories are treated just as normal files, but they 37 * have File Id Descriptors of their children as their file data. As for the 38 * Anchor Volume Descriptor Pointer, it can exist in two of the following three 39 * places: sector 256, sector n (the max sector of the disk), or sector 40 * n - 256. It's a pretty good bet that one will exist at sector 256 though. 41 * One caveat is unclosed CD media. For that, sector 256 cannot be written, 42 * so the Anchor Volume Descriptor Pointer can exist at sector 512 until the 43 * media is closed. 44 * 45 * Sector: 46 * 256: 47 * n: Anchor Volume Descriptor Pointer 48 * n - 256: | 49 * | 50 * |-->Main Volume Descriptor Sequence 51 * | | 52 * | | 53 * | |-->Logical Volume Descriptor 54 * | | 55 * |-->Partition Descriptor | 56 * | | 57 * | | 58 * |-->Fileset Descriptor 59 * | 60 * | 61 * |-->Root Dir File Entry 62 * | 63 * | 64 * |-->File data: 65 * File Id Descriptor 66 * | 67 * | 68 * |-->File Entry 69 * | 70 * | 71 * |-->File data 72 */ 73 74 #include <sys/types.h> 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/uio.h> 78 #include <sys/buf.h> 79 #include <sys/conf.h> 80 #include <sys/fcntl.h> 81 #include <sys/module.h> 82 #include <sys/kernel.h> 83 #include <sys/malloc.h> 84 #include <sys/mount.h> 85 #include <sys/nlookup.h> 86 #include <sys/proc.h> 87 #include <sys/priv.h> 88 #include <sys/queue.h> 89 #include <sys/vnode.h> 90 91 #include <sys/buf2.h> 92 93 #include <vfs/udf/ecma167-udf.h> 94 #include <vfs/udf/osta.h> 95 #include <vfs/udf/udf.h> 96 #include <vfs/udf/udf_mount.h> 97 98 extern struct vop_ops udf_vnode_vops; 99 100 MALLOC_DEFINE(M_UDFNODE, "UDF node", "UDF node structure"); 101 MALLOC_DEFINE(M_UDFMOUNT, "UDF mount", "UDF mount structure"); 102 MALLOC_DEFINE(M_UDFFENTRY, "UDF fentry", "UDF file entry structure"); 103 104 static int udf_mount(struct mount *, char *, caddr_t, struct ucred *); 105 static int udf_unmount(struct mount *, int); 106 static int udf_root(struct mount *, struct vnode **); 107 static int udf_statfs(struct mount *, struct statfs *, struct ucred *); 108 static int udf_fhtovp(struct mount *, struct vnode *, 109 struct fid *, struct vnode **); 110 static int udf_vptofh(struct vnode *, struct fid *); 111 112 static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *); 113 114 static struct vfsops udf_vfsops = { 115 .vfs_mount = udf_mount, 116 .vfs_unmount = udf_unmount, 117 .vfs_root = udf_root, 118 .vfs_statfs = udf_statfs, 119 .vfs_sync = vfs_stdsync, 120 .vfs_vget = udf_vget, 121 .vfs_fhtovp = udf_fhtovp, 122 .vfs_vptofh = udf_vptofh 123 }; 124 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 125 126 MODULE_VERSION(udf, 1); 127 128 static int udf_mountfs(struct vnode *, struct mount *); 129 130 static int 131 udf_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) 132 { 133 struct vnode *devvp; /* vnode of the mount device */ 134 struct udf_args args; 135 struct udf_mnt *imp = NULL; 136 size_t size; 137 int error; 138 struct nlookupdata nd; 139 140 if ((mp->mnt_flag & MNT_RDONLY) == 0) 141 return (EROFS); 142 143 /* 144 * No root filesystem support. Probably not a big deal, since the 145 * bootloader doesn't understand UDF. 146 */ 147 if (mp->mnt_flag & MNT_ROOTFS) 148 return (ENOTSUP); 149 150 if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args)))) 151 return(error); 152 153 if (mp->mnt_flag & MNT_UPDATE) { 154 imp = VFSTOUDFFS(mp); 155 if (args.fspec == NULL) 156 return(vfs_export(mp, &imp->im_export, &args.export)); 157 } 158 159 /* Check that the mount device exists */ 160 devvp = NULL; 161 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); 162 if (error == 0) 163 error = nlookup(&nd); 164 if (error == 0) 165 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 166 nlookup_done(&nd); 167 if (error) 168 return (error); 169 170 if (vn_isdisk(devvp, &error) == 0) { 171 vrele(devvp); 172 return(error); 173 } 174 175 /* Check the access rights on the mount device */ 176 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 177 error = VOP_EACCESS(devvp, VREAD, cred); 178 if (error) 179 error = priv_check_cred(cred, PRIV_ROOT, 0); 180 if (error) { 181 vput(devvp); 182 return(error); 183 } 184 vn_unlock(devvp); 185 186 if ((error = udf_mountfs(devvp, mp))) { 187 vrele(devvp); 188 return(error); 189 } 190 191 imp = VFSTOUDFFS(mp); 192 193 imp->im_flags = args.flags; 194 195 copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 196 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 197 udf_statfs(mp, &mp->mnt_stat, cred); 198 return(0); 199 } 200 201 /* 202 * Check the descriptor tag for both the correct id and correct checksum. 203 * Return zero if all is good, EINVAL if not. 204 */ 205 int 206 udf_checktag(struct desc_tag *tag, uint16_t id) 207 { 208 uint8_t *itag; 209 uint8_t i, cksum = 0; 210 211 itag = (uint8_t *)tag; 212 213 if (tag->id != id) 214 return(EINVAL); 215 216 for (i = 0; i < 15; i++) 217 cksum = cksum + itag[i]; 218 cksum = cksum - itag[4]; 219 220 if (cksum == tag->cksum) 221 return(0); 222 223 return(EINVAL); 224 } 225 226 static int 227 udf_mountfs(struct vnode *devvp, struct mount *mp) 228 { 229 struct buf *bp = NULL; 230 struct anchor_vdp avdp; 231 struct udf_mnt *udfmp = NULL; 232 struct part_desc *pd; 233 struct logvol_desc *lvd; 234 struct fileset_desc *fsd; 235 struct file_entry *root_fentry; 236 cdev_t dev; 237 uint32_t sector, size, mvds_start, mvds_end; 238 uint32_t fsd_offset = 0; 239 uint16_t part_num = 0, fsd_part = 0; 240 int error = EINVAL, needclose = 0; 241 int logvol_found = 0, part_found = 0, fsd_found = 0; 242 int bsize; 243 244 /* 245 * Disallow multiple mounts of the same device. Flush the buffer 246 * cache for the device. 247 */ 248 if ((error = vfs_mountedon(devvp))) 249 return(error); 250 if (vcount(devvp) > 0) 251 return(EBUSY); 252 if ((error = vinvalbuf(devvp, V_SAVE, 0, 0))) 253 return(error); 254 255 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 256 error = VOP_OPEN(devvp, FREAD, FSCRED, NULL); 257 vn_unlock(devvp); 258 if (error) 259 return(error); 260 needclose = 1; 261 dev = devvp->v_rdev; 262 263 udfmp = kmalloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO); 264 265 mp->mnt_data = (qaddr_t)udfmp; 266 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 267 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 268 mp->mnt_maxsymlinklen = 0; 269 mp->mnt_flag |= MNT_LOCAL; 270 udfmp->im_mountp = mp; 271 udfmp->im_dev = dev; 272 udfmp->im_devvp = devvp; 273 274 bsize = 2048; /* XXX Should probe the media for it's size */ 275 276 /* 277 * Get the Anchor Volume Descriptor Pointer from sector 256. 278 * XXX Should also check sector n - 256, n, and 512. 279 */ 280 sector = 256; 281 if ((error = bread(devvp, (off_t)sector * bsize, bsize, &bp)) != 0) 282 goto bail; 283 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 284 goto bail; 285 286 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 287 brelse(bp); 288 bp = NULL; 289 290 /* 291 * Extract the Partition Descriptor and Logical Volume Descriptor 292 * from the Volume Descriptor Sequence. 293 * XXX Should we care about the partition type right now? 294 * XXX What about multiple partitions? 295 */ 296 mvds_start = avdp.main_vds_ex.loc; 297 mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize; 298 for (sector = mvds_start; sector < mvds_end; sector++) { 299 if ((error = bread(devvp, (off_t)sector * bsize, bsize, 300 &bp)) != 0) { 301 kprintf("Can't read sector %d of VDS\n", sector); 302 goto bail; 303 } 304 lvd = (struct logvol_desc *)bp->b_data; 305 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 306 udfmp->bsize = lvd->lb_size; 307 udfmp->bmask = udfmp->bsize - 1; 308 udfmp->bshift = ffs(udfmp->bsize) - 1; 309 fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num; 310 fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num; 311 if (udf_find_partmaps(udfmp, lvd)) 312 break; 313 logvol_found = 1; 314 } 315 pd = (struct part_desc *)bp->b_data; 316 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 317 part_found = 1; 318 part_num = pd->part_num; 319 udfmp->part_len = pd->part_len; 320 udfmp->part_start = pd->start_loc; 321 } 322 323 brelse(bp); 324 bp = NULL; 325 if ((part_found) && (logvol_found)) 326 break; 327 } 328 329 if (!part_found || !logvol_found) { 330 error = EINVAL; 331 goto bail; 332 } 333 334 if (fsd_part != part_num) { 335 kprintf("FSD does not lie within the partition!\n"); 336 error = EINVAL; 337 goto bail; 338 } 339 340 341 /* 342 * Grab the Fileset Descriptor 343 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 344 * me in the right direction here. 345 */ 346 sector = udfmp->part_start + fsd_offset; 347 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 348 kprintf("Cannot read sector %d of FSD\n", sector); 349 goto bail; 350 } 351 fsd = (struct fileset_desc *)bp->b_data; 352 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 353 fsd_found = 1; 354 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 355 sizeof(struct long_ad)); 356 } 357 358 brelse(bp); 359 bp = NULL; 360 361 if (!fsd_found) { 362 kprintf("Couldn't find the fsd\n"); 363 error = EINVAL; 364 goto bail; 365 } 366 367 vfs_add_vnodeops(mp, &udf_vnode_vops, &mp->mnt_vn_norm_ops); 368 369 /* 370 * Find the file entry for the root directory. 371 */ 372 sector = udfmp->root_icb.loc.lb_num + udfmp->part_start; 373 size = udfmp->root_icb.len; 374 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 375 kprintf("Cannot read sector %d\n", sector); 376 goto bail; 377 } 378 379 root_fentry = (struct file_entry *)bp->b_data; 380 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 381 kprintf("Invalid root file entry!\n"); 382 goto bail; 383 } 384 385 brelse(bp); 386 bp = NULL; 387 388 lwkt_token_init(&udfmp->hash_token, "udfihash"); 389 udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz); 390 391 return(0); 392 393 bail: 394 if (udfmp != NULL) 395 kfree(udfmp, M_UDFMOUNT); 396 if (bp != NULL) 397 brelse(bp); 398 if (needclose) 399 VOP_CLOSE(devvp, FREAD); 400 return(error); 401 } 402 403 static int 404 udf_unmount(struct mount *mp, int mntflags) 405 { 406 struct udf_mnt *udfmp; 407 int error, flags = 0; 408 409 udfmp = VFSTOUDFFS(mp); 410 411 if (mntflags & MNT_FORCE) 412 flags |= FORCECLOSE; 413 414 if ((error = vflush(mp, 0, flags))) 415 return (error); 416 417 udfmp->im_devvp->v_rdev->si_mountpoint = NULL; 418 error = VOP_CLOSE(udfmp->im_devvp, FREAD); 419 vrele(udfmp->im_devvp); 420 421 if (udfmp->s_table) 422 kfree(udfmp->s_table, M_UDFMOUNT); 423 if (udfmp->hashtbl) 424 kfree(udfmp->hashtbl, M_UDFMOUNT); 425 kfree(udfmp, M_UDFMOUNT); 426 427 mp->mnt_data = (qaddr_t)0; 428 mp->mnt_flag &= ~MNT_LOCAL; 429 430 return (error); 431 } 432 433 static int 434 udf_root(struct mount *mp, struct vnode **vpp) 435 { 436 struct udf_mnt *udfmp; 437 struct vnode *vp; 438 ino_t id; 439 int error; 440 441 udfmp = VFSTOUDFFS(mp); 442 443 id = udf_getid(&udfmp->root_icb); 444 445 error = udf_vget(mp, NULL, id, vpp); 446 if (error) 447 return(error); 448 449 vp = *vpp; 450 vsetflags(vp, VROOT); 451 udfmp->root_vp = vp; 452 453 return(0); 454 } 455 456 static int 457 udf_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 458 { 459 struct udf_mnt *udfmp; 460 461 udfmp = VFSTOUDFFS(mp); 462 463 sbp->f_bsize = udfmp->bsize; 464 sbp->f_iosize = udfmp->bsize; 465 sbp->f_blocks = udfmp->part_len; 466 sbp->f_bfree = 0; 467 sbp->f_bavail = 0; 468 sbp->f_files = 0; 469 sbp->f_ffree = 0; 470 if (sbp != &mp->mnt_stat) { 471 sbp->f_type = mp->mnt_vfc->vfc_typenum; 472 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 473 } 474 475 return(0); 476 } 477 478 int 479 udf_vget(struct mount *mp, struct vnode *dvp, ino_t ino, struct vnode **vpp) 480 { 481 struct buf *bp; 482 struct vnode *devvp; 483 struct udf_mnt *udfmp; 484 struct vnode *vp; 485 struct udf_node *unode; 486 struct file_entry *fe; 487 int error, sector, size; 488 489 udfmp = VFSTOUDFFS(mp); 490 491 /* See if we already have this in the cache */ 492 if ((error = udf_hashlookup(udfmp, ino, vpp)) != 0) 493 return(error); 494 if (*vpp != NULL) { 495 return(0); 496 } 497 498 /* 499 * Allocate memory and check the tag id's before grabbing a new 500 * vnode, since it's hard to roll back if there is a problem. 501 */ 502 unode = kmalloc(sizeof(*unode), M_UDFNODE, M_WAITOK | M_ZERO); 503 504 /* 505 * Copy in the file entry. Per the spec, the size can only be 1 block. 506 */ 507 sector = ino + udfmp->part_start; 508 devvp = udfmp->im_devvp; 509 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 510 kprintf("Cannot read sector %d\n", sector); 511 kfree(unode, M_UDFNODE); 512 return(error); 513 } 514 515 fe = (struct file_entry *)bp->b_data; 516 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 517 kprintf("Invalid file entry!\n"); 518 kfree(unode, M_UDFNODE); 519 brelse(bp); 520 return(ENOMEM); 521 } 522 size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad; 523 unode->fentry = kmalloc(size, M_UDFFENTRY, M_WAITOK | M_ZERO); 524 525 bcopy(bp->b_data, unode->fentry, size); 526 527 brelse(bp); 528 bp = NULL; 529 530 if ((error = udf_allocv(mp, &vp))) { 531 kprintf("Error from udf_allocv\n"); 532 kfree(unode, M_UDFNODE); 533 return(error); 534 } 535 536 unode->i_vnode = vp; 537 unode->hash_id = ino; 538 unode->i_devvp = udfmp->im_devvp; 539 unode->i_dev = udfmp->im_dev; 540 unode->udfmp = udfmp; 541 vp->v_data = unode; 542 vref(udfmp->im_devvp); 543 udf_hashins(unode); 544 545 switch (unode->fentry->icbtag.file_type) { 546 default: 547 vp->v_type = VBAD; 548 break; 549 case 4: 550 vp->v_type = VDIR; 551 break; 552 case 5: 553 vp->v_type = VREG; 554 break; 555 case 6: 556 vp->v_type = VBLK; 557 break; 558 case 7: 559 vp->v_type = VCHR; 560 break; 561 case 9: 562 vp->v_type = VFIFO; 563 break; 564 case 10: 565 vp->v_type = VSOCK; 566 break; 567 case 12: 568 vp->v_type = VLNK; 569 break; 570 } 571 /* 572 * Locked and refd vnode returned 573 */ 574 *vpp = vp; 575 576 return(0); 577 } 578 579 struct ifid { 580 u_short ifid_len; 581 u_short ifid_pad; 582 int ifid_ino; 583 long ifid_start; 584 }; 585 586 static int 587 udf_fhtovp(struct mount *mp, struct vnode *rootvp, 588 struct fid *fhp, struct vnode **vpp) 589 { 590 struct ifid *ifhp; 591 struct vnode *nvp; 592 int error; 593 594 ifhp = (struct ifid *)fhp; 595 596 if ((error = VFS_VGET(mp, NULL, ifhp->ifid_ino, &nvp)) != 0) { 597 *vpp = NULLVP; 598 return(error); 599 } 600 601 *vpp = nvp; 602 return(0); 603 } 604 605 static int 606 udf_vptofh (struct vnode *vp, struct fid *fhp) 607 { 608 struct udf_node *node; 609 struct ifid *ifhp; 610 611 node = VTON(vp); 612 ifhp = (struct ifid *)fhp; 613 ifhp->ifid_len = sizeof(struct ifid); 614 ifhp->ifid_ino = node->hash_id; 615 616 return(0); 617 } 618 619 static int 620 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 621 { 622 union udf_pmap *pmap; 623 struct part_map_spare *pms; 624 struct regid *pmap_id; 625 struct buf *bp; 626 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 627 int ptype, psize, error; 628 unsigned int i; 629 630 for (i = 0; i < lvd->n_pm; i++) { 631 pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE]; 632 ptype = pmap->data[0]; 633 psize = pmap->data[1]; 634 if (((ptype != 1) && (ptype != 2)) || 635 ((psize != UDF_PMAP_SIZE) && (psize != 6))) { 636 kprintf("Invalid partition map found\n"); 637 return(1); 638 } 639 640 if (ptype == 1) { 641 /* Type 1 map. We don't care */ 642 continue; 643 } 644 645 /* Type 2 map. Gotta find out the details */ 646 pmap_id = (struct regid *)&pmap->data[4]; 647 bzero(®id_id[0], UDF_REGID_ID_SIZE); 648 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 649 650 if (bcmp(®id_id[0], "*UDF Sparable Partition", 651 UDF_REGID_ID_SIZE)) { 652 kprintf("Unsupported partition map: %s\n", ®id_id[0]); 653 return(1); 654 } 655 656 pms = &pmap->pms; 657 udfmp->s_table = kmalloc(pms->st_size, M_UDFMOUNT, 658 M_WAITOK | M_ZERO); 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