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 1.1 2004/03/12 22:38:15 joerg 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/dirent.h> 82 #include <sys/fcntl.h> 83 #include <sys/module.h> 84 #include <sys/kernel.h> 85 #include <sys/malloc.h> 86 #include <sys/mount.h> 87 #include <sys/namei.h> 88 #include <sys/proc.h> 89 #include <sys/queue.h> 90 #include <sys/vnode.h> 91 92 #include <vfs/udf/ecma167-udf.h> 93 #include <vfs/udf/osta.h> 94 #include <vfs/udf/udf.h> 95 #include <vfs/udf/udf_mount.h> 96 97 MALLOC_DEFINE(M_UDFNODE, "UDF node", "UDF node structure"); 98 MALLOC_DEFINE(M_UDFMOUNT, "UDF mount", "UDF mount structure"); 99 MALLOC_DEFINE(M_UDFFENTRY, "UDF fentry", "UDF file entry structure"); 100 101 static int udf_mount(struct mount *, char *, caddr_t, struct nameidata *, 102 struct thread *); 103 static int udf_unmount(struct mount *, int, struct thread *); 104 static int udf_root(struct mount *, struct vnode **); 105 static int udf_statfs(struct mount *, struct statfs *, struct thread *); 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 udf_mount, 113 vfs_stdstart, 114 udf_unmount, 115 udf_root, 116 vfs_stdquotactl, 117 udf_statfs, 118 vfs_stdsync, 119 udf_vget, 120 udf_fhtovp, 121 vfs_stdcheckexp, 122 udf_vptofh, 123 vfs_stdinit, 124 vfs_stduninit, 125 vfs_stdextattrctl, 126 }; 127 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 128 129 MODULE_VERSION(udf, 1); 130 131 static int udf_mountfs(struct vnode *, struct mount *, struct thread *); 132 133 static int 134 udf_mount(struct mount *mp, char *path, caddr_t data, struct nameidata *ndp, 135 struct thread *td) 136 { 137 struct vnode *devvp; /* vnode of the mount device */ 138 struct udf_args args; 139 struct udf_mnt *imp = 0; 140 size_t size; 141 int error; 142 143 if ((mp->mnt_flag & MNT_RDONLY) == 0) 144 return (EROFS); 145 146 /* 147 * No root filesystem support. Probably not a big deal, since the 148 * bootloader doesn't understand UDF. 149 */ 150 if (mp->mnt_flag & MNT_ROOTFS) 151 return (ENOTSUP); 152 153 if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args)))) 154 return(error); 155 156 if (mp->mnt_flag & MNT_UPDATE) { 157 imp = VFSTOUDFFS(mp); 158 if (args.fspec == NULL) 159 return(vfs_export(mp, &imp->im_export, &args.export)); 160 } 161 162 /* Check that the mount device exists */ 163 NDINIT(ndp, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args.fspec, td); 164 if ((error = namei(ndp))) 165 return(error); 166 NDFREE(ndp, NDF_ONLY_PNBUF); 167 devvp = ndp->ni_vp; 168 169 if (vn_isdisk(devvp, &error) == 0) { 170 vrele(devvp); 171 return(error); 172 } 173 174 /* Check the access rights on the mount device */ 175 vn_lock(devvp, NULL, LK_EXCLUSIVE | LK_RETRY, td); 176 error = VOP_ACCESS(devvp, VREAD, td->td_proc->p_ucred, td); 177 if (error) 178 error = suser(td); 179 if (error) { 180 vput(devvp); 181 return(error); 182 } 183 VOP_UNLOCK(devvp, NULL, 0, td); 184 185 if ((error = udf_mountfs(devvp, mp, td))) { 186 vrele(devvp); 187 return(error); 188 } 189 190 imp = VFSTOUDFFS(mp); 191 192 imp->im_flags = args.flags; 193 194 copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); 195 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); 196 copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 197 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 198 udf_statfs(mp, &mp->mnt_stat, td); 199 return(0); 200 }; 201 202 /* 203 * Check the descriptor tag for both the correct id and correct checksum. 204 * Return zero if all is good, EINVAL if not. 205 */ 206 int 207 udf_checktag(struct desc_tag *tag, uint16_t id) 208 { 209 uint8_t *itag; 210 uint8_t i, cksum = 0; 211 212 itag = (uint8_t *)tag; 213 214 if (tag->id != id) 215 return(EINVAL); 216 217 for (i = 0; i < 15; i++) 218 cksum = cksum + itag[i]; 219 cksum = cksum - itag[4]; 220 221 if (cksum == tag->cksum) 222 return(0); 223 224 return(EINVAL); 225 } 226 227 static int 228 udf_mountfs(struct vnode *devvp, struct mount *mp, struct thread *td) { 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 uint32_t sector, size, mvds_start, mvds_end; 237 uint32_t fsd_offset = 0; 238 uint16_t part_num = 0, fsd_part = 0; 239 int error = EINVAL, needclose = 0; 240 int logvol_found = 0, part_found = 0, fsd_found = 0; 241 int bsize; 242 243 /* 244 * Disallow multiple mounts of the same device. Flush the buffer 245 * cache for the device. 246 */ 247 if ((error = vfs_mountedon(devvp))) 248 return(error); 249 if (vcount(devvp) > 1) 250 return(EBUSY); 251 if ((error = vinvalbuf(devvp, V_SAVE, td, 0, 0))) 252 return(error); 253 254 vn_lock(devvp, NULL, LK_EXCLUSIVE | LK_RETRY, td); 255 error = VOP_OPEN(devvp, FREAD, FSCRED, td); 256 VOP_UNLOCK(devvp, NULL, 0, td); 257 if (error) 258 return(error); 259 needclose = 1; 260 261 udfmp = malloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO); 262 263 mp->mnt_data = (qaddr_t)udfmp; 264 mp->mnt_stat.f_fsid.val[0] = dev2udev(devvp->v_rdev); 265 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 266 mp->mnt_maxsymlinklen = 0; 267 mp->mnt_flag |= MNT_LOCAL; 268 udfmp->im_mountp = mp; 269 udfmp->im_dev = devvp->v_rdev; 270 udfmp->im_devvp = devvp; 271 272 bsize = 2048; /* XXX Should probe the media for it's size */ 273 274 /* 275 * Get the Anchor Volume Descriptor Pointer from sector 256. 276 * XXX Should also check sector n - 256, n, and 512. 277 */ 278 sector = 256; 279 if ((error = bread(devvp, sector * btodb(bsize), bsize, &bp)) != 0) 280 goto bail; 281 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 282 goto bail; 283 284 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 285 brelse(bp); 286 bp = NULL; 287 288 /* 289 * Extract the Partition Descriptor and Logical Volume Descriptor 290 * from the Volume Descriptor Sequence. 291 * XXX Should we care about the partition type right now? 292 * XXX What about multiple partitions? 293 */ 294 mvds_start = avdp.main_vds_ex.loc; 295 mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize; 296 for (sector = mvds_start; sector < mvds_end; sector++) { 297 if ((error = bread(devvp, sector * btodb(bsize), bsize, 298 &bp)) != 0) { 299 printf("Can't read sector %d of VDS\n", sector); 300 goto bail; 301 } 302 lvd = (struct logvol_desc *)bp->b_data; 303 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 304 udfmp->bsize = lvd->lb_size; 305 udfmp->bmask = udfmp->bsize - 1; 306 udfmp->bshift = ffs(udfmp->bsize) - 1; 307 fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num; 308 fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num; 309 if (udf_find_partmaps(udfmp, lvd)) 310 break; 311 logvol_found = 1; 312 } 313 pd = (struct part_desc *)bp->b_data; 314 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 315 part_found = 1; 316 part_num = pd->part_num; 317 udfmp->part_len = pd->part_len; 318 udfmp->part_start = pd->start_loc; 319 } 320 321 brelse(bp); 322 bp = NULL; 323 if ((part_found) && (logvol_found)) 324 break; 325 } 326 327 if (!part_found || !logvol_found) { 328 error = EINVAL; 329 goto bail; 330 } 331 332 if (fsd_part != part_num) { 333 printf("FSD does not lie within the partition!\n"); 334 error = EINVAL; 335 goto bail; 336 } 337 338 339 /* 340 * Grab the Fileset Descriptor 341 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 342 * me in the right direction here. 343 */ 344 sector = udfmp->part_start + fsd_offset; 345 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 346 printf("Cannot read sector %d of FSD\n", sector); 347 goto bail; 348 } 349 fsd = (struct fileset_desc *)bp->b_data; 350 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 351 fsd_found = 1; 352 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 353 sizeof(struct long_ad)); 354 } 355 356 brelse(bp); 357 bp = NULL; 358 359 if (!fsd_found) { 360 printf("Couldn't find the fsd\n"); 361 error = EINVAL; 362 goto bail; 363 } 364 365 /* 366 * Find the file entry for the root directory. 367 */ 368 sector = udfmp->root_icb.loc.lb_num + udfmp->part_start; 369 size = udfmp->root_icb.len; 370 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 371 printf("Cannot read sector %d\n", sector); 372 goto bail; 373 } 374 375 root_fentry = (struct file_entry *)bp->b_data; 376 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 377 printf("Invalid root file entry!\n"); 378 goto bail; 379 } 380 381 brelse(bp); 382 bp = NULL; 383 384 lwkt_token_init(&udfmp->hash_token); 385 udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz); 386 387 return(0); 388 389 bail: 390 if (udfmp != NULL) 391 free(udfmp, M_UDFMOUNT); 392 if (bp != NULL) 393 brelse(bp); 394 if (needclose) 395 VOP_CLOSE(devvp, FREAD, td); 396 return(error); 397 }; 398 399 static int 400 udf_unmount(struct mount *mp, int mntflags, struct thread *td) 401 { 402 struct udf_mnt *udfmp; 403 int error, flags = 0; 404 405 udfmp = VFSTOUDFFS(mp); 406 407 if (mntflags & MNT_FORCE) 408 flags |= FORCECLOSE; 409 410 if ((error = vflush(mp, 0, flags))) 411 return (error); 412 413 udfmp->im_devvp->v_specmountpoint = NULL; 414 error = VOP_CLOSE(udfmp->im_devvp, FREAD, td); 415 vrele(udfmp->im_devvp); 416 417 if (udfmp->s_table) 418 free(udfmp->s_table, M_UDFMOUNT); 419 if (udfmp->hashtbl) 420 free(udfmp->hashtbl, M_UDFMOUNT); 421 free(udfmp, M_UDFMOUNT); 422 423 mp->mnt_data = (qaddr_t)0; 424 mp->mnt_flag &= ~MNT_LOCAL; 425 426 return (error); 427 } 428 429 static int 430 udf_root(struct mount *mp, struct vnode **vpp) 431 { 432 struct udf_mnt *udfmp; 433 struct vnode *vp; 434 ino_t id; 435 int error; 436 437 udfmp = VFSTOUDFFS(mp); 438 439 id = udf_getid(&udfmp->root_icb); 440 441 error = udf_vget(mp, id, vpp); 442 if (error) 443 return(error); 444 445 vp = *vpp; 446 vp->v_flag |= VROOT; 447 udfmp->root_vp = vp; 448 449 return(0); 450 } 451 452 static int 453 udf_statfs(struct mount *mp, struct statfs *sbp, struct thread *td) 454 { 455 struct udf_mnt *udfmp; 456 457 udfmp = VFSTOUDFFS(mp); 458 459 sbp->f_bsize = udfmp->bsize; 460 sbp->f_iosize = udfmp->bsize; 461 sbp->f_blocks = udfmp->part_len; 462 sbp->f_bfree = 0; 463 sbp->f_bavail = 0; 464 sbp->f_files = 0; 465 sbp->f_ffree = 0; 466 if (sbp != &mp->mnt_stat) { 467 sbp->f_type = mp->mnt_vfc->vfc_typenum; 468 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 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 = malloc(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 printf("Cannot read sector %d\n", sector); 510 free(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 printf("Invalid file entry!\n"); 517 free(unode, M_UDFNODE); 518 brelse(bp); 519 return(ENOMEM); 520 } 521 size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad; 522 unode->fentry = malloc(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 printf("Error from udf_allocv\n"); 531 free(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 *vpp = vp; 571 572 return(0); 573 } 574 575 struct ifid { 576 u_short ifid_len; 577 u_short ifid_pad; 578 int ifid_ino; 579 long ifid_start; 580 }; 581 582 static int 583 udf_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 584 { 585 struct ifid *ifhp; 586 struct vnode *nvp; 587 int error; 588 589 ifhp = (struct ifid *)fhp; 590 591 if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { 592 *vpp = NULLVP; 593 return(error); 594 } 595 596 *vpp = nvp; 597 return(0); 598 } 599 600 static int 601 udf_vptofh (struct vnode *vp, struct fid *fhp) 602 { 603 struct udf_node *node; 604 struct ifid *ifhp; 605 606 node = VTON(vp); 607 ifhp = (struct ifid *)fhp; 608 ifhp->ifid_len = sizeof(struct ifid); 609 ifhp->ifid_ino = node->hash_id; 610 611 return(0); 612 } 613 614 static int 615 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 616 { 617 union udf_pmap *pmap; 618 struct part_map_spare *pms; 619 struct regid *pmap_id; 620 struct buf *bp; 621 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 622 int ptype, psize, error; 623 unsigned int i; 624 625 for (i = 0; i < lvd->n_pm; i++) { 626 pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE]; 627 ptype = pmap->data[0]; 628 psize = pmap->data[1]; 629 if (((ptype != 1) && (ptype != 2)) || 630 ((psize != UDF_PMAP_SIZE) && (psize != 6))) { 631 printf("Invalid partition map found\n"); 632 return(1); 633 } 634 635 if (ptype == 1) { 636 /* Type 1 map. We don't care */ 637 continue; 638 } 639 640 /* Type 2 map. Gotta find out the details */ 641 pmap_id = (struct regid *)&pmap->data[4]; 642 bzero(®id_id[0], UDF_REGID_ID_SIZE); 643 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 644 645 if (bcmp(®id_id[0], "*UDF Sparable Partition", 646 UDF_REGID_ID_SIZE)) { 647 printf("Unsupported partition map: %s\n", ®id_id[0]); 648 return(1); 649 } 650 651 pms = &pmap->pms; 652 udfmp->s_table = malloc(pms->st_size, M_UDFMOUNT, 653 M_WAITOK | M_ZERO); 654 if (udfmp->s_table == NULL) 655 return(ENOMEM); 656 657 /* Calculate the number of sectors per packet. */ 658 /* XXX Logical or physical? */ 659 udfmp->p_sectors = pms->packet_len / udfmp->bsize; 660 661 /* 662 * XXX If reading the first Sparing Table fails, should look 663 * for another table. 664 */ 665 if ((error = udf_readlblks(udfmp, pms->st_loc[0], pms->st_size, 666 &bp)) != 0) { 667 printf("Failed to read Sparing Table at sector %d\n", 668 pms->st_loc[0]); 669 return(error); 670 } 671 bcopy(bp->b_data, udfmp->s_table, pms->st_size); 672 brelse(bp); 673 674 if (udf_checktag(&udfmp->s_table->tag, 0)) { 675 printf("Invalid sparing table found\n"); 676 return(EINVAL); 677 } 678 679 /* See how many valid entries there are here. The list is 680 * supposed to be sorted. 0xfffffff0 and higher are not valid 681 */ 682 for (i = 0; i < udfmp->s_table->rt_l; i++) { 683 udfmp->s_table_entries = i; 684 if (udfmp->s_table->entries[i].org >= 0xfffffff0) 685 break; 686 } 687 } 688 689 return(0); 690 } 691