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 1.28 2008/09/17 21:44:25 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/priv.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 extern struct vop_ops udf_vnode_vops; 98 99 MALLOC_DEFINE(M_UDFNODE, "UDF node", "UDF node structure"); 100 MALLOC_DEFINE(M_UDFMOUNT, "UDF mount", "UDF mount structure"); 101 MALLOC_DEFINE(M_UDFFENTRY, "UDF fentry", "UDF file entry structure"); 102 103 static int udf_mount(struct mount *, char *, caddr_t, struct ucred *); 104 static int udf_unmount(struct mount *, int); 105 static int udf_root(struct mount *, struct vnode **); 106 static int udf_statfs(struct mount *, struct statfs *, struct ucred *); 107 static int udf_fhtovp(struct mount *, struct vnode *, 108 struct fid *, struct vnode **); 109 static int udf_vptofh(struct vnode *, struct fid *); 110 111 static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *); 112 113 static struct vfsops udf_vfsops = { 114 .vfs_mount = udf_mount, 115 .vfs_unmount = udf_unmount, 116 .vfs_root = udf_root, 117 .vfs_statfs = udf_statfs, 118 .vfs_sync = vfs_stdsync, 119 .vfs_vget = udf_vget, 120 .vfs_fhtovp = udf_fhtovp, 121 .vfs_vptofh = udf_vptofh 122 }; 123 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 124 125 MODULE_VERSION(udf, 1); 126 127 static int udf_mountfs(struct vnode *, struct mount *); 128 129 static int 130 udf_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) 131 { 132 struct vnode *devvp; /* vnode of the mount device */ 133 struct udf_args args; 134 struct udf_mnt *imp = 0; 135 size_t size; 136 int error; 137 struct nlookupdata nd; 138 139 if ((mp->mnt_flag & MNT_RDONLY) == 0) 140 return (EROFS); 141 142 /* 143 * No root filesystem support. Probably not a big deal, since the 144 * bootloader doesn't understand UDF. 145 */ 146 if (mp->mnt_flag & MNT_ROOTFS) 147 return (ENOTSUP); 148 149 if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args)))) 150 return(error); 151 152 if (mp->mnt_flag & MNT_UPDATE) { 153 imp = VFSTOUDFFS(mp); 154 if (args.fspec == NULL) 155 return(vfs_export(mp, &imp->im_export, &args.export)); 156 } 157 158 /* Check that the mount device exists */ 159 devvp = NULL; 160 error = nlookup_init(&nd, args.fspec, UIO_USERSPACE, NLC_FOLLOW); 161 if (error == 0) 162 error = nlookup(&nd); 163 if (error == 0) 164 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 165 nlookup_done(&nd); 166 if (error) 167 return (error); 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, LK_EXCLUSIVE | LK_RETRY); 176 error = VOP_ACCESS(devvp, VREAD, cred); 177 if (error) 178 error = priv_check_cred(cred, PRIV_ROOT, 0); 179 if (error) { 180 vput(devvp); 181 return(error); 182 } 183 vn_unlock(devvp); 184 185 if ((error = udf_mountfs(devvp, mp))) { 186 vrele(devvp); 187 return(error); 188 } 189 190 imp = VFSTOUDFFS(mp); 191 192 imp->im_flags = args.flags; 193 194 copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 195 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 196 udf_statfs(mp, &mp->mnt_stat, cred); 197 return(0); 198 } 199 200 /* 201 * Check the descriptor tag for both the correct id and correct checksum. 202 * Return zero if all is good, EINVAL if not. 203 */ 204 int 205 udf_checktag(struct desc_tag *tag, uint16_t id) 206 { 207 uint8_t *itag; 208 uint8_t i, cksum = 0; 209 210 itag = (uint8_t *)tag; 211 212 if (tag->id != id) 213 return(EINVAL); 214 215 for (i = 0; i < 15; i++) 216 cksum = cksum + itag[i]; 217 cksum = cksum - itag[4]; 218 219 if (cksum == tag->cksum) 220 return(0); 221 222 return(EINVAL); 223 } 224 225 static int 226 udf_mountfs(struct vnode *devvp, struct mount *mp) 227 { 228 struct buf *bp = NULL; 229 struct anchor_vdp avdp; 230 struct udf_mnt *udfmp = NULL; 231 struct part_desc *pd; 232 struct logvol_desc *lvd; 233 struct fileset_desc *fsd; 234 struct file_entry *root_fentry; 235 cdev_t dev; 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 (count_udev(devvp->v_umajor, devvp->v_uminor) > 0) 250 return(EBUSY); 251 if ((error = vinvalbuf(devvp, V_SAVE, 0, 0))) 252 return(error); 253 254 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 255 error = VOP_OPEN(devvp, FREAD, FSCRED, NULL); 256 vn_unlock(devvp); 257 if (error) 258 return(error); 259 needclose = 1; 260 dev = devvp->v_rdev; 261 262 udfmp = kmalloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO); 263 264 mp->mnt_data = (qaddr_t)udfmp; 265 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 266 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 267 mp->mnt_maxsymlinklen = 0; 268 mp->mnt_flag |= MNT_LOCAL; 269 udfmp->im_mountp = mp; 270 udfmp->im_dev = dev; 271 udfmp->im_devvp = devvp; 272 273 bsize = 2048; /* XXX Should probe the media for it's size */ 274 275 /* 276 * Get the Anchor Volume Descriptor Pointer from sector 256. 277 * XXX Should also check sector n - 256, n, and 512. 278 */ 279 sector = 256; 280 if ((error = bread(devvp, (off_t)sector * bsize, bsize, &bp)) != 0) 281 goto bail; 282 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 283 goto bail; 284 285 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 286 brelse(bp); 287 bp = NULL; 288 289 /* 290 * Extract the Partition Descriptor and Logical Volume Descriptor 291 * from the Volume Descriptor Sequence. 292 * XXX Should we care about the partition type right now? 293 * XXX What about multiple partitions? 294 */ 295 mvds_start = avdp.main_vds_ex.loc; 296 mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize; 297 for (sector = mvds_start; sector < mvds_end; sector++) { 298 if ((error = bread(devvp, (off_t)sector * bsize, bsize, 299 &bp)) != 0) { 300 kprintf("Can't read sector %d of VDS\n", sector); 301 goto bail; 302 } 303 lvd = (struct logvol_desc *)bp->b_data; 304 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 305 udfmp->bsize = lvd->lb_size; 306 udfmp->bmask = udfmp->bsize - 1; 307 udfmp->bshift = ffs(udfmp->bsize) - 1; 308 fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num; 309 fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num; 310 if (udf_find_partmaps(udfmp, lvd)) 311 break; 312 logvol_found = 1; 313 } 314 pd = (struct part_desc *)bp->b_data; 315 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 316 part_found = 1; 317 part_num = pd->part_num; 318 udfmp->part_len = pd->part_len; 319 udfmp->part_start = pd->start_loc; 320 } 321 322 brelse(bp); 323 bp = NULL; 324 if ((part_found) && (logvol_found)) 325 break; 326 } 327 328 if (!part_found || !logvol_found) { 329 error = EINVAL; 330 goto bail; 331 } 332 333 if (fsd_part != part_num) { 334 kprintf("FSD does not lie within the partition!\n"); 335 error = EINVAL; 336 goto bail; 337 } 338 339 340 /* 341 * Grab the Fileset Descriptor 342 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 343 * me in the right direction here. 344 */ 345 sector = udfmp->part_start + fsd_offset; 346 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 347 kprintf("Cannot read sector %d of FSD\n", sector); 348 goto bail; 349 } 350 fsd = (struct fileset_desc *)bp->b_data; 351 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 352 fsd_found = 1; 353 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 354 sizeof(struct long_ad)); 355 } 356 357 brelse(bp); 358 bp = NULL; 359 360 if (!fsd_found) { 361 kprintf("Couldn't find the fsd\n"); 362 error = EINVAL; 363 goto bail; 364 } 365 366 vfs_add_vnodeops(mp, &udf_vnode_vops, &mp->mnt_vn_norm_ops); 367 368 /* 369 * Find the file entry for the root directory. 370 */ 371 sector = udfmp->root_icb.loc.lb_num + udfmp->part_start; 372 size = udfmp->root_icb.len; 373 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 374 kprintf("Cannot read sector %d\n", sector); 375 goto bail; 376 } 377 378 root_fentry = (struct file_entry *)bp->b_data; 379 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 380 kprintf("Invalid root file entry!\n"); 381 goto bail; 382 } 383 384 brelse(bp); 385 bp = NULL; 386 387 lwkt_token_init(&udfmp->hash_token); 388 udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz); 389 390 return(0); 391 392 bail: 393 if (udfmp != NULL) 394 kfree(udfmp, M_UDFMOUNT); 395 if (bp != NULL) 396 brelse(bp); 397 if (needclose) 398 VOP_CLOSE(devvp, FREAD); 399 return(error); 400 } 401 402 static int 403 udf_unmount(struct mount *mp, int mntflags) 404 { 405 struct udf_mnt *udfmp; 406 int error, flags = 0; 407 408 udfmp = VFSTOUDFFS(mp); 409 410 if (mntflags & MNT_FORCE) 411 flags |= FORCECLOSE; 412 413 if ((error = vflush(mp, 0, flags))) 414 return (error); 415 416 udfmp->im_devvp->v_rdev->si_mountpoint = NULL; 417 error = VOP_CLOSE(udfmp->im_devvp, FREAD); 418 vrele(udfmp->im_devvp); 419 420 if (udfmp->s_table) 421 kfree(udfmp->s_table, M_UDFMOUNT); 422 if (udfmp->hashtbl) 423 kfree(udfmp->hashtbl, M_UDFMOUNT); 424 kfree(udfmp, M_UDFMOUNT); 425 426 mp->mnt_data = (qaddr_t)0; 427 mp->mnt_flag &= ~MNT_LOCAL; 428 429 return (error); 430 } 431 432 static int 433 udf_root(struct mount *mp, struct vnode **vpp) 434 { 435 struct udf_mnt *udfmp; 436 struct vnode *vp; 437 ino_t id; 438 int error; 439 440 udfmp = VFSTOUDFFS(mp); 441 442 id = udf_getid(&udfmp->root_icb); 443 444 error = udf_vget(mp, id, vpp); 445 if (error) 446 return(error); 447 448 vp = *vpp; 449 vp->v_flag |= VROOT; 450 udfmp->root_vp = vp; 451 452 return(0); 453 } 454 455 static int 456 udf_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 457 { 458 struct udf_mnt *udfmp; 459 460 udfmp = VFSTOUDFFS(mp); 461 462 sbp->f_bsize = udfmp->bsize; 463 sbp->f_iosize = udfmp->bsize; 464 sbp->f_blocks = udfmp->part_len; 465 sbp->f_bfree = 0; 466 sbp->f_bavail = 0; 467 sbp->f_files = 0; 468 sbp->f_ffree = 0; 469 if (sbp != &mp->mnt_stat) { 470 sbp->f_type = mp->mnt_vfc->vfc_typenum; 471 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 472 } 473 474 return(0); 475 } 476 477 int 478 udf_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 479 { 480 struct buf *bp; 481 struct vnode *devvp; 482 struct udf_mnt *udfmp; 483 struct thread *td; 484 struct vnode *vp; 485 struct udf_node *unode; 486 struct file_entry *fe; 487 int error, sector, size; 488 489 td = curthread; 490 udfmp = VFSTOUDFFS(mp); 491 492 /* See if we already have this in the cache */ 493 if ((error = udf_hashlookup(udfmp, ino, vpp)) != 0) 494 return(error); 495 if (*vpp != NULL) { 496 return(0); 497 } 498 499 /* 500 * Allocate memory and check the tag id's before grabbing a new 501 * vnode, since it's hard to roll back if there is a problem. 502 */ 503 unode = kmalloc(sizeof(*unode), M_UDFNODE, M_WAITOK | M_ZERO); 504 505 /* 506 * Copy in the file entry. Per the spec, the size can only be 1 block. 507 */ 508 sector = ino + udfmp->part_start; 509 devvp = udfmp->im_devvp; 510 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 511 kprintf("Cannot read sector %d\n", sector); 512 kfree(unode, M_UDFNODE); 513 return(error); 514 } 515 516 fe = (struct file_entry *)bp->b_data; 517 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 518 kprintf("Invalid file entry!\n"); 519 kfree(unode, M_UDFNODE); 520 brelse(bp); 521 return(ENOMEM); 522 } 523 size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad; 524 unode->fentry = kmalloc(size, M_UDFFENTRY, M_WAITOK | M_ZERO); 525 526 bcopy(bp->b_data, unode->fentry, size); 527 528 brelse(bp); 529 bp = NULL; 530 531 if ((error = udf_allocv(mp, &vp))) { 532 kprintf("Error from udf_allocv\n"); 533 kfree(unode, M_UDFNODE); 534 return(error); 535 } 536 537 unode->i_vnode = vp; 538 unode->hash_id = ino; 539 unode->i_devvp = udfmp->im_devvp; 540 unode->i_dev = udfmp->im_dev; 541 unode->udfmp = udfmp; 542 vp->v_data = unode; 543 vref(udfmp->im_devvp); 544 udf_hashins(unode); 545 546 switch (unode->fentry->icbtag.file_type) { 547 default: 548 vp->v_type = VBAD; 549 break; 550 case 4: 551 vp->v_type = VDIR; 552 break; 553 case 5: 554 vp->v_type = VREG; 555 break; 556 case 6: 557 vp->v_type = VBLK; 558 break; 559 case 7: 560 vp->v_type = VCHR; 561 break; 562 case 9: 563 vp->v_type = VFIFO; 564 break; 565 case 10: 566 vp->v_type = VSOCK; 567 break; 568 case 12: 569 vp->v_type = VLNK; 570 break; 571 } 572 /* 573 * Locked and refd vnode returned 574 */ 575 *vpp = vp; 576 577 return(0); 578 } 579 580 struct ifid { 581 u_short ifid_len; 582 u_short ifid_pad; 583 int ifid_ino; 584 long ifid_start; 585 }; 586 587 static int 588 udf_fhtovp(struct mount *mp, struct vnode *rootvp, 589 struct fid *fhp, struct vnode **vpp) 590 { 591 struct ifid *ifhp; 592 struct vnode *nvp; 593 int error; 594 595 ifhp = (struct ifid *)fhp; 596 597 if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { 598 *vpp = NULLVP; 599 return(error); 600 } 601 602 *vpp = nvp; 603 return(0); 604 } 605 606 static int 607 udf_vptofh (struct vnode *vp, struct fid *fhp) 608 { 609 struct udf_node *node; 610 struct ifid *ifhp; 611 612 node = VTON(vp); 613 ifhp = (struct ifid *)fhp; 614 ifhp->ifid_len = sizeof(struct ifid); 615 ifhp->ifid_ino = node->hash_id; 616 617 return(0); 618 } 619 620 static int 621 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 622 { 623 union udf_pmap *pmap; 624 struct part_map_spare *pms; 625 struct regid *pmap_id; 626 struct buf *bp; 627 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 628 int ptype, psize, error; 629 unsigned int i; 630 631 for (i = 0; i < lvd->n_pm; i++) { 632 pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE]; 633 ptype = pmap->data[0]; 634 psize = pmap->data[1]; 635 if (((ptype != 1) && (ptype != 2)) || 636 ((psize != UDF_PMAP_SIZE) && (psize != 6))) { 637 kprintf("Invalid partition map found\n"); 638 return(1); 639 } 640 641 if (ptype == 1) { 642 /* Type 1 map. We don't care */ 643 continue; 644 } 645 646 /* Type 2 map. Gotta find out the details */ 647 pmap_id = (struct regid *)&pmap->data[4]; 648 bzero(®id_id[0], UDF_REGID_ID_SIZE); 649 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 650 651 if (bcmp(®id_id[0], "*UDF Sparable Partition", 652 UDF_REGID_ID_SIZE)) { 653 kprintf("Unsupported partition map: %s\n", ®id_id[0]); 654 return(1); 655 } 656 657 pms = &pmap->pms; 658 udfmp->s_table = kmalloc(pms->st_size, M_UDFMOUNT, 659 M_WAITOK | M_ZERO); 660 661 /* Calculate the number of sectors per packet. */ 662 /* XXX Logical or physical? */ 663 udfmp->p_sectors = pms->packet_len / udfmp->bsize; 664 665 /* 666 * XXX If reading the first Sparing Table fails, should look 667 * for another table. 668 */ 669 if ((error = udf_readlblks(udfmp, pms->st_loc[0], pms->st_size, 670 &bp)) != 0) { 671 if (bp) 672 brelse(bp); 673 kprintf("Failed to read Sparing Table at sector %d\n", 674 pms->st_loc[0]); 675 return(error); 676 } 677 bcopy(bp->b_data, udfmp->s_table, pms->st_size); 678 brelse(bp); 679 680 if (udf_checktag(&udfmp->s_table->tag, 0)) { 681 kprintf("Invalid sparing table found\n"); 682 return(EINVAL); 683 } 684 685 /* See how many valid entries there are here. The list is 686 * supposed to be sorted. 0xfffffff0 and higher are not valid 687 */ 688 for (i = 0; i < udfmp->s_table->rt_l; i++) { 689 udfmp->s_table_entries = i; 690 if (udfmp->s_table->entries[i].org >= 0xfffffff0) 691 break; 692 } 693 } 694 695 return(0); 696 } 697