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 1.8 2004/09/30 19:00:23 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/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 extern struct vnodeopv_entry_desc udf_vnodeop_entries[]; 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 thread *); 104 static int udf_unmount(struct mount *, int, struct thread *); 105 static int udf_root(struct mount *, struct vnode **); 106 static int udf_statfs(struct mount *, struct statfs *, struct thread *); 107 static int udf_fhtovp(struct mount *, struct fid *, struct vnode **); 108 static int udf_vptofh(struct vnode *, struct fid *); 109 110 static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *); 111 112 static struct vfsops udf_vfsops = { 113 udf_mount, 114 vfs_stdstart, 115 udf_unmount, 116 udf_root, 117 vfs_stdquotactl, 118 udf_statfs, 119 vfs_stdsync, 120 udf_vget, 121 udf_fhtovp, 122 vfs_stdcheckexp, 123 udf_vptofh, 124 vfs_stdinit, 125 vfs_stduninit, 126 vfs_stdextattrctl, 127 }; 128 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 129 130 MODULE_VERSION(udf, 1); 131 132 static int udf_mountfs(struct vnode *, struct mount *, struct thread *); 133 134 static int 135 udf_mount(struct mount *mp, char *path, caddr_t data, 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 struct nameidata nd; 143 144 if ((mp->mnt_flag & MNT_RDONLY) == 0) 145 return (EROFS); 146 147 /* 148 * No root filesystem support. Probably not a big deal, since the 149 * bootloader doesn't understand UDF. 150 */ 151 if (mp->mnt_flag & MNT_ROOTFS) 152 return (ENOTSUP); 153 154 if ((error = copyin(data, (caddr_t)&args, sizeof(struct udf_args)))) 155 return(error); 156 157 if (mp->mnt_flag & MNT_UPDATE) { 158 imp = VFSTOUDFFS(mp); 159 if (args.fspec == NULL) 160 return(vfs_export(mp, &imp->im_export, &args.export)); 161 } 162 163 /* Check that the mount device exists */ 164 NDINIT(&nd, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args.fspec, td); 165 if ((error = namei(&nd))) 166 return(error); 167 NDFREE(&nd, NDF_ONLY_PNBUF); 168 devvp = nd.ni_vp; 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, NULL, LK_EXCLUSIVE | LK_RETRY, td); 177 error = VOP_ACCESS(devvp, VREAD, td->td_proc->p_ucred, td); 178 if (error) 179 error = suser(td); 180 if (error) { 181 vput(devvp); 182 return(error); 183 } 184 VOP_UNLOCK(devvp, NULL, 0, td); 185 186 if ((error = udf_mountfs(devvp, mp, td))) { 187 vrele(devvp); 188 return(error); 189 } 190 191 imp = VFSTOUDFFS(mp); 192 193 imp->im_flags = args.flags; 194 195 copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); 196 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); 197 copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 198 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 199 udf_statfs(mp, &mp->mnt_stat, td); 200 return(0); 201 } 202 203 /* 204 * Check the descriptor tag for both the correct id and correct checksum. 205 * Return zero if all is good, EINVAL if not. 206 */ 207 int 208 udf_checktag(struct desc_tag *tag, uint16_t id) 209 { 210 uint8_t *itag; 211 uint8_t i, cksum = 0; 212 213 itag = (uint8_t *)tag; 214 215 if (tag->id != id) 216 return(EINVAL); 217 218 for (i = 0; i < 15; i++) 219 cksum = cksum + itag[i]; 220 cksum = cksum - itag[4]; 221 222 if (cksum == tag->cksum) 223 return(0); 224 225 return(EINVAL); 226 } 227 228 static int 229 udf_mountfs(struct vnode *devvp, struct mount *mp, struct thread *td) 230 { 231 struct buf *bp = NULL; 232 struct anchor_vdp avdp; 233 struct udf_mnt *udfmp = NULL; 234 struct part_desc *pd; 235 struct logvol_desc *lvd; 236 struct fileset_desc *fsd; 237 struct file_entry *root_fentry; 238 dev_t dev; 239 uint32_t sector, size, mvds_start, mvds_end; 240 uint32_t fsd_offset = 0; 241 uint16_t part_num = 0, fsd_part = 0; 242 int error = EINVAL, needclose = 0; 243 int logvol_found = 0, part_found = 0, fsd_found = 0; 244 int bsize; 245 246 /* 247 * Disallow multiple mounts of the same device. Flush the buffer 248 * cache for the device. 249 */ 250 if ((error = vfs_mountedon(devvp))) 251 return(error); 252 if (count_udev(devvp->v_udev) > 0) 253 return(EBUSY); 254 if ((error = vinvalbuf(devvp, V_SAVE, td, 0, 0))) 255 return(error); 256 257 vn_lock(devvp, NULL, LK_EXCLUSIVE | LK_RETRY, td); 258 error = VOP_OPEN(devvp, FREAD, FSCRED, td); 259 VOP_UNLOCK(devvp, NULL, 0, td); 260 if (error) 261 return(error); 262 needclose = 1; 263 dev = devvp->v_rdev; 264 265 udfmp = malloc(sizeof(*udfmp), M_UDFMOUNT, M_WAITOK | M_ZERO); 266 267 mp->mnt_data = (qaddr_t)udfmp; 268 mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); 269 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 270 mp->mnt_maxsymlinklen = 0; 271 mp->mnt_flag |= MNT_LOCAL; 272 udfmp->im_mountp = mp; 273 udfmp->im_dev = dev; 274 udfmp->im_devvp = devvp; 275 276 bsize = 2048; /* XXX Should probe the media for it's size */ 277 278 /* 279 * Get the Anchor Volume Descriptor Pointer from sector 256. 280 * XXX Should also check sector n - 256, n, and 512. 281 */ 282 sector = 256; 283 if ((error = bread(devvp, sector * btodb(bsize), bsize, &bp)) != 0) 284 goto bail; 285 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 286 goto bail; 287 288 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 289 brelse(bp); 290 bp = NULL; 291 292 /* 293 * Extract the Partition Descriptor and Logical Volume Descriptor 294 * from the Volume Descriptor Sequence. 295 * XXX Should we care about the partition type right now? 296 * XXX What about multiple partitions? 297 */ 298 mvds_start = avdp.main_vds_ex.loc; 299 mvds_end = mvds_start + (avdp.main_vds_ex.len - 1) / bsize; 300 for (sector = mvds_start; sector < mvds_end; sector++) { 301 if ((error = bread(devvp, sector * btodb(bsize), bsize, 302 &bp)) != 0) { 303 printf("Can't read sector %d of VDS\n", sector); 304 goto bail; 305 } 306 lvd = (struct logvol_desc *)bp->b_data; 307 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 308 udfmp->bsize = lvd->lb_size; 309 udfmp->bmask = udfmp->bsize - 1; 310 udfmp->bshift = ffs(udfmp->bsize) - 1; 311 fsd_part = lvd->_lvd_use.fsd_loc.loc.part_num; 312 fsd_offset = lvd->_lvd_use.fsd_loc.loc.lb_num; 313 if (udf_find_partmaps(udfmp, lvd)) 314 break; 315 logvol_found = 1; 316 } 317 pd = (struct part_desc *)bp->b_data; 318 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 319 part_found = 1; 320 part_num = pd->part_num; 321 udfmp->part_len = pd->part_len; 322 udfmp->part_start = pd->start_loc; 323 } 324 325 brelse(bp); 326 bp = NULL; 327 if ((part_found) && (logvol_found)) 328 break; 329 } 330 331 if (!part_found || !logvol_found) { 332 error = EINVAL; 333 goto bail; 334 } 335 336 if (fsd_part != part_num) { 337 printf("FSD does not lie within the partition!\n"); 338 error = EINVAL; 339 goto bail; 340 } 341 342 343 /* 344 * Grab the Fileset Descriptor 345 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 346 * me in the right direction here. 347 */ 348 sector = udfmp->part_start + fsd_offset; 349 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 350 printf("Cannot read sector %d of FSD\n", sector); 351 goto bail; 352 } 353 fsd = (struct fileset_desc *)bp->b_data; 354 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 355 fsd_found = 1; 356 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 357 sizeof(struct long_ad)); 358 } 359 360 brelse(bp); 361 bp = NULL; 362 363 if (!fsd_found) { 364 printf("Couldn't find the fsd\n"); 365 error = EINVAL; 366 goto bail; 367 } 368 369 vfs_add_vnodeops(&mp->mnt_vn_ops, udf_vnodeop_entries); 370 371 /* 372 * Find the file entry for the root directory. 373 */ 374 sector = udfmp->root_icb.loc.lb_num + udfmp->part_start; 375 size = udfmp->root_icb.len; 376 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 377 printf("Cannot read sector %d\n", sector); 378 goto bail; 379 } 380 381 root_fentry = (struct file_entry *)bp->b_data; 382 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 383 printf("Invalid root file entry!\n"); 384 goto bail; 385 } 386 387 brelse(bp); 388 bp = NULL; 389 390 lwkt_token_init(&udfmp->hash_token); 391 udfmp->hashtbl = phashinit(UDF_HASHTBLSIZE, M_UDFMOUNT, &udfmp->hashsz); 392 393 return(0); 394 395 bail: 396 if (udfmp != NULL) 397 free(udfmp, M_UDFMOUNT); 398 if (bp != NULL) 399 brelse(bp); 400 if (needclose) 401 VOP_CLOSE(devvp, FREAD, td); 402 return(error); 403 } 404 405 static int 406 udf_unmount(struct mount *mp, int mntflags, struct thread *td) 407 { 408 struct udf_mnt *udfmp; 409 int error, flags = 0; 410 411 udfmp = VFSTOUDFFS(mp); 412 413 if (mntflags & MNT_FORCE) 414 flags |= FORCECLOSE; 415 416 if ((error = vflush(mp, 0, flags))) 417 return (error); 418 419 udfmp->im_devvp->v_rdev->si_mountpoint = NULL; 420 error = VOP_CLOSE(udfmp->im_devvp, FREAD, td); 421 vrele(udfmp->im_devvp); 422 423 if (udfmp->s_table) 424 free(udfmp->s_table, M_UDFMOUNT); 425 if (udfmp->hashtbl) 426 free(udfmp->hashtbl, M_UDFMOUNT); 427 free(udfmp, M_UDFMOUNT); 428 429 mp->mnt_data = (qaddr_t)0; 430 mp->mnt_flag &= ~MNT_LOCAL; 431 432 return (error); 433 } 434 435 static int 436 udf_root(struct mount *mp, struct vnode **vpp) 437 { 438 struct udf_mnt *udfmp; 439 struct vnode *vp; 440 ino_t id; 441 int error; 442 443 udfmp = VFSTOUDFFS(mp); 444 445 id = udf_getid(&udfmp->root_icb); 446 447 error = udf_vget(mp, id, vpp); 448 if (error) 449 return(error); 450 451 vp = *vpp; 452 vp->v_flag |= VROOT; 453 udfmp->root_vp = vp; 454 455 return(0); 456 } 457 458 static int 459 udf_statfs(struct mount *mp, struct statfs *sbp, struct thread *td) 460 { 461 struct udf_mnt *udfmp; 462 463 udfmp = VFSTOUDFFS(mp); 464 465 sbp->f_bsize = udfmp->bsize; 466 sbp->f_iosize = udfmp->bsize; 467 sbp->f_blocks = udfmp->part_len; 468 sbp->f_bfree = 0; 469 sbp->f_bavail = 0; 470 sbp->f_files = 0; 471 sbp->f_ffree = 0; 472 if (sbp != &mp->mnt_stat) { 473 sbp->f_type = mp->mnt_vfc->vfc_typenum; 474 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 475 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 476 } 477 478 return(0); 479 } 480 481 int 482 udf_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 483 { 484 struct buf *bp; 485 struct vnode *devvp; 486 struct udf_mnt *udfmp; 487 struct thread *td; 488 struct vnode *vp; 489 struct udf_node *unode; 490 struct file_entry *fe; 491 int error, sector, size; 492 493 td = curthread; 494 udfmp = VFSTOUDFFS(mp); 495 496 /* See if we already have this in the cache */ 497 if ((error = udf_hashlookup(udfmp, ino, vpp)) != 0) 498 return(error); 499 if (*vpp != NULL) { 500 return(0); 501 } 502 503 /* 504 * Allocate memory and check the tag id's before grabbing a new 505 * vnode, since it's hard to roll back if there is a problem. 506 */ 507 unode = malloc(sizeof(*unode), M_UDFNODE, M_WAITOK | M_ZERO); 508 509 /* 510 * Copy in the file entry. Per the spec, the size can only be 1 block. 511 */ 512 sector = ino + udfmp->part_start; 513 devvp = udfmp->im_devvp; 514 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 515 printf("Cannot read sector %d\n", sector); 516 free(unode, M_UDFNODE); 517 return(error); 518 } 519 520 fe = (struct file_entry *)bp->b_data; 521 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 522 printf("Invalid file entry!\n"); 523 free(unode, M_UDFNODE); 524 brelse(bp); 525 return(ENOMEM); 526 } 527 size = UDF_FENTRY_SIZE + fe->l_ea + fe->l_ad; 528 unode->fentry = malloc(size, M_UDFFENTRY, M_WAITOK | M_ZERO); 529 530 bcopy(bp->b_data, unode->fentry, size); 531 532 brelse(bp); 533 bp = NULL; 534 535 if ((error = udf_allocv(mp, &vp))) { 536 printf("Error from udf_allocv\n"); 537 free(unode, M_UDFNODE); 538 return(error); 539 } 540 541 unode->i_vnode = vp; 542 unode->hash_id = ino; 543 unode->i_devvp = udfmp->im_devvp; 544 unode->i_dev = udfmp->im_dev; 545 unode->udfmp = udfmp; 546 vp->v_data = unode; 547 vref(udfmp->im_devvp); 548 udf_hashins(unode); 549 550 switch (unode->fentry->icbtag.file_type) { 551 default: 552 vp->v_type = VBAD; 553 break; 554 case 4: 555 vp->v_type = VDIR; 556 break; 557 case 5: 558 vp->v_type = VREG; 559 break; 560 case 6: 561 vp->v_type = VBLK; 562 break; 563 case 7: 564 vp->v_type = VCHR; 565 break; 566 case 9: 567 vp->v_type = VFIFO; 568 break; 569 case 10: 570 vp->v_type = VSOCK; 571 break; 572 case 12: 573 vp->v_type = VLNK; 574 break; 575 } 576 *vpp = vp; 577 578 return(0); 579 } 580 581 struct ifid { 582 u_short ifid_len; 583 u_short ifid_pad; 584 int ifid_ino; 585 long ifid_start; 586 }; 587 588 static int 589 udf_fhtovp(struct mount *mp, 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 printf("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 printf("Unsupported partition map: %s\n", ®id_id[0]); 654 return(1); 655 } 656 657 pms = &pmap->pms; 658 udfmp->s_table = malloc(pms->st_size, M_UDFMOUNT, 659 M_WAITOK | M_ZERO); 660 if (udfmp->s_table == NULL) 661 return(ENOMEM); 662 663 /* Calculate the number of sectors per packet. */ 664 /* XXX Logical or physical? */ 665 udfmp->p_sectors = pms->packet_len / udfmp->bsize; 666 667 /* 668 * XXX If reading the first Sparing Table fails, should look 669 * for another table. 670 */ 671 if ((error = udf_readlblks(udfmp, pms->st_loc[0], pms->st_size, 672 &bp)) != 0) { 673 if (bp) 674 brelse(bp); 675 printf("Failed to read Sparing Table at sector %d\n", 676 pms->st_loc[0]); 677 return(error); 678 } 679 bcopy(bp->b_data, udfmp->s_table, pms->st_size); 680 brelse(bp); 681 682 if (udf_checktag(&udfmp->s_table->tag, 0)) { 683 printf("Invalid sparing table found\n"); 684 return(EINVAL); 685 } 686 687 /* See how many valid entries there are here. The list is 688 * supposed to be sorted. 0xfffffff0 and higher are not valid 689 */ 690 for (i = 0; i < udfmp->s_table->rt_l; i++) { 691 udfmp->s_table_entries = i; 692 if (udfmp->s_table->entries[i].org >= 0xfffffff0) 693 break; 694 } 695 } 696 697 return(0); 698 } 699