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 * $FreeBSD$ 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 #include <sys/types.h> 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/uio.h> 77 #include <sys/bio.h> 78 #include <sys/buf.h> 79 #include <sys/conf.h> 80 #include <sys/dirent.h> 81 #include <sys/fcntl.h> 82 #include <sys/iconv.h> 83 #include <sys/kernel.h> 84 #include <sys/malloc.h> 85 #include <sys/mount.h> 86 #include <sys/namei.h> 87 #include <sys/proc.h> 88 #include <sys/queue.h> 89 #include <sys/vnode.h> 90 #include <sys/endian.h> 91 92 #include <geom/geom.h> 93 #include <geom/geom_vfs.h> 94 95 #include <vm/uma.h> 96 97 #include <fs/udf/ecma167-udf.h> 98 #include <fs/udf/osta.h> 99 #include <fs/udf/udf.h> 100 #include <fs/udf/udf_mount.h> 101 102 static MALLOC_DEFINE(M_UDFMOUNT, "udf_mount", "UDF mount structure"); 103 MALLOC_DEFINE(M_UDFFENTRY, "udf_fentry", "UDF file entry structure"); 104 105 struct iconv_functions *udf_iconv = NULL; 106 107 /* Zones */ 108 uma_zone_t udf_zone_trans = NULL; 109 uma_zone_t udf_zone_node = NULL; 110 uma_zone_t udf_zone_ds = NULL; 111 112 static vfs_init_t udf_init; 113 static vfs_uninit_t udf_uninit; 114 static vfs_mount_t udf_mount; 115 static vfs_root_t udf_root; 116 static vfs_statfs_t udf_statfs; 117 static vfs_unmount_t udf_unmount; 118 static vfs_fhtovp_t udf_fhtovp; 119 static vfs_vptofh_t udf_vptofh; 120 121 static int udf_find_partmaps(struct udf_mnt *, struct logvol_desc *); 122 123 static struct vfsops udf_vfsops = { 124 .vfs_fhtovp = udf_fhtovp, 125 .vfs_init = udf_init, 126 .vfs_mount = udf_mount, 127 .vfs_root = udf_root, 128 .vfs_statfs = udf_statfs, 129 .vfs_uninit = udf_uninit, 130 .vfs_unmount = udf_unmount, 131 .vfs_vget = udf_vget, 132 .vfs_vptofh = udf_vptofh, 133 }; 134 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 135 136 MODULE_VERSION(udf, 1); 137 138 static int udf_mountfs(struct vnode *, struct mount *, struct thread *); 139 140 static int 141 udf_init(struct vfsconf *foo) 142 { 143 144 /* 145 * This code used to pre-allocate a certain number of pages for each 146 * pool, reducing the need to grow the zones later on. UMA doesn't 147 * advertise any such functionality, unfortunately =-< 148 */ 149 udf_zone_trans = uma_zcreate("UDF translation buffer, zone", MAXNAMLEN * 150 sizeof(unicode_t), NULL, NULL, NULL, NULL, 0, 0); 151 152 udf_zone_node = uma_zcreate("UDF Node zone", sizeof(struct udf_node), 153 NULL, NULL, NULL, NULL, 0, 0); 154 155 udf_zone_ds = uma_zcreate("UDF Dirstream zone", 156 sizeof(struct udf_dirstream), NULL, NULL, NULL, NULL, 0, 0); 157 158 if ((udf_zone_node == NULL) || (udf_zone_trans == NULL) || 159 (udf_zone_ds == NULL)) { 160 printf("Cannot create allocation zones.\n"); 161 return (ENOMEM); 162 } 163 164 return 0; 165 } 166 167 static int 168 udf_uninit(struct vfsconf *foo) 169 { 170 171 if (udf_zone_trans != NULL) { 172 uma_zdestroy(udf_zone_trans); 173 udf_zone_trans = NULL; 174 } 175 176 if (udf_zone_node != NULL) { 177 uma_zdestroy(udf_zone_node); 178 udf_zone_node = NULL; 179 } 180 181 if (udf_zone_ds != NULL) { 182 uma_zdestroy(udf_zone_ds); 183 udf_zone_ds = NULL; 184 } 185 186 return (0); 187 } 188 189 static int 190 udf_mount(struct mount *mp, struct thread *td) 191 { 192 struct vnode *devvp; /* vnode of the mount device */ 193 struct udf_mnt *imp = 0; 194 struct export_args *export; 195 struct vfsoptlist *opts; 196 char *fspec, *cs_disk, *cs_local; 197 int error, len, *udf_flags; 198 struct nameidata nd, *ndp = &nd; 199 200 opts = mp->mnt_optnew; 201 202 /* 203 * Unconditionally mount as read-only. 204 */ 205 mp->mnt_flag |= MNT_RDONLY; 206 207 /* 208 * No root filesystem support. Probably not a big deal, since the 209 * bootloader doesn't understand UDF. 210 */ 211 if (mp->mnt_flag & MNT_ROOTFS) 212 return (ENOTSUP); 213 214 fspec = NULL; 215 error = vfs_getopt(opts, "from", (void **)&fspec, &len); 216 if (!error && fspec[len - 1] != '\0') 217 return (EINVAL); 218 219 if (mp->mnt_flag & MNT_UPDATE) { 220 if (fspec == NULL) { 221 error = vfs_getopt(opts, "export", (void **)&export, 222 &len); 223 if (error || len != sizeof(struct export_args)) 224 return (EINVAL); 225 return (vfs_export(mp, export)); 226 } 227 } 228 229 /* Check that the mount device exists */ 230 if (fspec == NULL) 231 return (EINVAL); 232 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td); 233 if ((error = namei(ndp))) 234 return (error); 235 NDFREE(ndp, NDF_ONLY_PNBUF); 236 devvp = ndp->ni_vp; 237 238 if (vn_isdisk(devvp, &error) == 0) { 239 vput(devvp); 240 return (error); 241 } 242 243 /* Check the access rights on the mount device */ 244 error = VOP_ACCESS(devvp, VREAD, td->td_ucred, td); 245 if (error) 246 error = suser(td); 247 if (error) { 248 vput(devvp); 249 return (error); 250 } 251 252 if ((error = udf_mountfs(devvp, mp, td))) { 253 vrele(devvp); 254 return (error); 255 } 256 257 imp = VFSTOUDFFS(mp); 258 259 udf_flags = NULL; 260 error = vfs_getopt(opts, "flags", (void **)&udf_flags, &len); 261 if (error || len != sizeof(int)) 262 return (EINVAL); 263 imp->im_flags = *udf_flags; 264 265 if (imp->im_flags & UDFMNT_KICONV && udf_iconv) { 266 cs_disk = NULL; 267 error = vfs_getopt(opts, "cs_disk", (void **)&cs_disk, &len); 268 if (!error && cs_disk[len - 1] != '\0') 269 return (EINVAL); 270 cs_local = NULL; 271 error = vfs_getopt(opts, "cs_local", (void **)&cs_local, &len); 272 if (!error && cs_local[len - 1] != '\0') 273 return (EINVAL); 274 udf_iconv->open(cs_local, cs_disk, &imp->im_d2l); 275 #if 0 276 udf_iconv->open(cs_disk, cs_local, &imp->im_l2d); 277 #endif 278 } 279 280 vfs_mountedfrom(mp, fspec); 281 return 0; 282 }; 283 284 /* 285 * Check the descriptor tag for both the correct id and correct checksum. 286 * Return zero if all is good, EINVAL if not. 287 */ 288 int 289 udf_checktag(struct desc_tag *tag, uint16_t id) 290 { 291 uint8_t *itag; 292 uint8_t i, cksum = 0; 293 294 itag = (uint8_t *)tag; 295 296 if (le16toh(tag->id) != id) 297 return (EINVAL); 298 299 for (i = 0; i < 15; i++) 300 cksum = cksum + itag[i]; 301 cksum = cksum - itag[4]; 302 303 if (cksum == tag->cksum) 304 return (0); 305 306 return (EINVAL); 307 } 308 309 static int 310 udf_mountfs(struct vnode *devvp, struct mount *mp, struct thread *td) { 311 struct buf *bp = NULL; 312 struct anchor_vdp avdp; 313 struct udf_mnt *udfmp = NULL; 314 struct part_desc *pd; 315 struct logvol_desc *lvd; 316 struct fileset_desc *fsd; 317 struct file_entry *root_fentry; 318 uint32_t sector, size, mvds_start, mvds_end; 319 uint32_t logical_secsize; 320 uint32_t fsd_offset = 0; 321 uint16_t part_num = 0, fsd_part = 0; 322 int error = EINVAL; 323 int logvol_found = 0, part_found = 0, fsd_found = 0; 324 int bsize; 325 struct g_consumer *cp; 326 struct bufobj *bo; 327 328 DROP_GIANT(); 329 g_topology_lock(); 330 error = g_vfs_open(devvp, &cp, "udf", 0); 331 g_topology_unlock(); 332 PICKUP_GIANT(); 333 VOP_UNLOCK(devvp, 0, td); 334 if (error) 335 return error; 336 337 bo = &devvp->v_bufobj; 338 339 /* XXX: should be M_WAITOK */ 340 MALLOC(udfmp, struct udf_mnt *, sizeof(struct udf_mnt), M_UDFMOUNT, 341 M_NOWAIT | M_ZERO); 342 if (udfmp == NULL) { 343 printf("Cannot allocate UDF mount struct\n"); 344 error = ENOMEM; 345 goto bail; 346 } 347 348 mp->mnt_data = (qaddr_t)udfmp; 349 mp->mnt_stat.f_fsid.val[0] = dev2udev(devvp->v_rdev); 350 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 351 mp->mnt_flag |= MNT_LOCAL; 352 udfmp->im_mountp = mp; 353 udfmp->im_dev = devvp->v_rdev; 354 udfmp->im_devvp = devvp; 355 udfmp->im_d2l = NULL; 356 udfmp->im_cp = cp; 357 udfmp->im_bo = bo; 358 359 #if 0 360 udfmp->im_l2d = NULL; 361 #endif 362 /* 363 * The UDF specification defines a logical sectorsize of 2048 364 * for DVD media. 365 */ 366 logical_secsize = 2048; 367 368 if (((logical_secsize % cp->provider->sectorsize) != 0) || 369 (logical_secsize < cp->provider->sectorsize)) { 370 DROP_GIANT(); 371 g_topology_lock(); 372 g_vfs_close(cp, td); 373 g_topology_unlock(); 374 PICKUP_GIANT(); 375 return (EINVAL); 376 } 377 378 bsize = cp->provider->sectorsize; 379 380 /* 381 * Get the Anchor Volume Descriptor Pointer from sector 256. 382 * XXX Should also check sector n - 256, n, and 512. 383 */ 384 sector = 256; 385 if ((error = bread(devvp, sector * btodb(logical_secsize), bsize, 386 NOCRED, &bp)) != 0) 387 goto bail; 388 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 389 goto bail; 390 391 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 392 brelse(bp); 393 bp = NULL; 394 395 /* 396 * Extract the Partition Descriptor and Logical Volume Descriptor 397 * from the Volume Descriptor Sequence. 398 * XXX Should we care about the partition type right now? 399 * XXX What about multiple partitions? 400 */ 401 mvds_start = le32toh(avdp.main_vds_ex.loc); 402 mvds_end = mvds_start + (le32toh(avdp.main_vds_ex.len) - 1) / bsize; 403 for (sector = mvds_start; sector < mvds_end; sector++) { 404 if ((error = bread(devvp, sector * btodb(logical_secsize), 405 bsize, NOCRED, &bp)) != 0) { 406 printf("Can't read sector %d of VDS\n", sector); 407 goto bail; 408 } 409 lvd = (struct logvol_desc *)bp->b_data; 410 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 411 udfmp->bsize = le32toh(lvd->lb_size); 412 udfmp->bmask = udfmp->bsize - 1; 413 udfmp->bshift = ffs(udfmp->bsize) - 1; 414 fsd_part = le16toh(lvd->_lvd_use.fsd_loc.loc.part_num); 415 fsd_offset = le32toh(lvd->_lvd_use.fsd_loc.loc.lb_num); 416 if (udf_find_partmaps(udfmp, lvd)) 417 break; 418 logvol_found = 1; 419 } 420 pd = (struct part_desc *)bp->b_data; 421 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 422 part_found = 1; 423 part_num = le16toh(pd->part_num); 424 udfmp->part_len = le32toh(pd->part_len); 425 udfmp->part_start = le32toh(pd->start_loc); 426 } 427 428 brelse(bp); 429 bp = NULL; 430 if ((part_found) && (logvol_found)) 431 break; 432 } 433 434 if (!part_found || !logvol_found) { 435 error = EINVAL; 436 goto bail; 437 } 438 439 if (fsd_part != part_num) { 440 printf("FSD does not lie within the partition!\n"); 441 error = EINVAL; 442 goto bail; 443 } 444 445 446 /* 447 * Grab the Fileset Descriptor 448 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 449 * me in the right direction here. 450 */ 451 sector = udfmp->part_start + fsd_offset; 452 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 453 printf("Cannot read sector %d of FSD\n", sector); 454 goto bail; 455 } 456 fsd = (struct fileset_desc *)bp->b_data; 457 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 458 fsd_found = 1; 459 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 460 sizeof(struct long_ad)); 461 } 462 463 brelse(bp); 464 bp = NULL; 465 466 if (!fsd_found) { 467 printf("Couldn't find the fsd\n"); 468 error = EINVAL; 469 goto bail; 470 } 471 472 /* 473 * Find the file entry for the root directory. 474 */ 475 sector = le32toh(udfmp->root_icb.loc.lb_num) + udfmp->part_start; 476 size = le32toh(udfmp->root_icb.len); 477 if ((error = udf_readlblks(udfmp, sector, size, &bp)) != 0) { 478 printf("Cannot read sector %d\n", sector); 479 goto bail; 480 } 481 482 root_fentry = (struct file_entry *)bp->b_data; 483 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 484 printf("Invalid root file entry!\n"); 485 goto bail; 486 } 487 488 brelse(bp); 489 bp = NULL; 490 491 return 0; 492 493 bail: 494 if (udfmp != NULL) 495 FREE(udfmp, M_UDFMOUNT); 496 if (bp != NULL) 497 brelse(bp); 498 DROP_GIANT(); 499 g_topology_lock(); 500 g_vfs_close(cp, td); 501 g_topology_unlock(); 502 PICKUP_GIANT(); 503 return error; 504 }; 505 506 static int 507 udf_unmount(struct mount *mp, int mntflags, struct thread *td) 508 { 509 struct udf_mnt *udfmp; 510 int error, flags = 0; 511 512 udfmp = VFSTOUDFFS(mp); 513 514 if (mntflags & MNT_FORCE) 515 flags |= FORCECLOSE; 516 517 if ((error = vflush(mp, 0, flags, td))) 518 return (error); 519 520 if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) { 521 if (udfmp->im_d2l) 522 udf_iconv->close(udfmp->im_d2l); 523 #if 0 524 if (udfmp->im_l2d) 525 udf_iconv->close(udfmp->im_l2d); 526 #endif 527 } 528 529 DROP_GIANT(); 530 g_topology_lock(); 531 g_vfs_close(udfmp->im_cp, td); 532 g_topology_unlock(); 533 PICKUP_GIANT(); 534 vrele(udfmp->im_devvp); 535 536 if (udfmp->s_table != NULL) 537 FREE(udfmp->s_table, M_UDFMOUNT); 538 539 FREE(udfmp, M_UDFMOUNT); 540 541 mp->mnt_data = (qaddr_t)0; 542 mp->mnt_flag &= ~MNT_LOCAL; 543 544 return (0); 545 } 546 547 static int 548 udf_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td) 549 { 550 struct udf_mnt *udfmp; 551 struct vnode *vp; 552 ino_t id; 553 int error; 554 555 udfmp = VFSTOUDFFS(mp); 556 557 id = udf_getid(&udfmp->root_icb); 558 559 error = udf_vget(mp, id, LK_EXCLUSIVE, vpp); 560 if (error) 561 return error; 562 563 vp = *vpp; 564 vp->v_vflag |= VV_ROOT; 565 566 return (0); 567 } 568 569 static int 570 udf_statfs(struct mount *mp, struct statfs *sbp, struct thread *td) 571 { 572 struct udf_mnt *udfmp; 573 574 udfmp = VFSTOUDFFS(mp); 575 576 sbp->f_bsize = udfmp->bsize; 577 sbp->f_iosize = udfmp->bsize; 578 sbp->f_blocks = udfmp->part_len; 579 sbp->f_bfree = 0; 580 sbp->f_bavail = 0; 581 sbp->f_files = 0; 582 sbp->f_ffree = 0; 583 return 0; 584 } 585 586 int 587 udf_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp) 588 { 589 struct buf *bp; 590 struct vnode *devvp; 591 struct udf_mnt *udfmp; 592 struct thread *td; 593 struct vnode *vp; 594 struct udf_node *unode; 595 struct file_entry *fe; 596 int error, sector, size; 597 598 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 599 if (error || *vpp != NULL) 600 return (error); 601 602 td = curthread; 603 udfmp = VFSTOUDFFS(mp); 604 605 unode = uma_zalloc(udf_zone_node, M_WAITOK | M_ZERO); 606 607 if ((error = udf_allocv(mp, &vp, td))) { 608 printf("Error from udf_allocv\n"); 609 uma_zfree(udf_zone_node, unode); 610 return (error); 611 } 612 613 unode->i_vnode = vp; 614 unode->hash_id = ino; 615 unode->udfmp = udfmp; 616 vp->v_data = unode; 617 618 error = vfs_hash_insert(vp, ino, flags, curthread, vpp, NULL, NULL); 619 if (error || *vpp != NULL) 620 return (error); 621 622 /* 623 * Copy in the file entry. Per the spec, the size can only be 1 block. 624 */ 625 sector = ino + udfmp->part_start; 626 devvp = udfmp->im_devvp; 627 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 628 printf("Cannot read sector %d\n", sector); 629 vput(vp); 630 brelse(bp); 631 *vpp = NULL; 632 return (error); 633 } 634 635 fe = (struct file_entry *)bp->b_data; 636 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 637 printf("Invalid file entry!\n"); 638 vput(vp); 639 brelse(bp); 640 *vpp = NULL; 641 return (ENOMEM); 642 } 643 size = UDF_FENTRY_SIZE + le32toh(fe->l_ea) + le32toh(fe->l_ad); 644 MALLOC(unode->fentry, struct file_entry *, size, M_UDFFENTRY, 645 M_NOWAIT | M_ZERO); 646 if (unode->fentry == NULL) { 647 printf("Cannot allocate file entry block\n"); 648 vput(vp); 649 brelse(bp); 650 *vpp = NULL; 651 return (ENOMEM); 652 } 653 654 bcopy(bp->b_data, unode->fentry, size); 655 656 brelse(bp); 657 bp = NULL; 658 659 switch (unode->fentry->icbtag.file_type) { 660 default: 661 vp->v_type = VBAD; 662 break; 663 case 4: 664 vp->v_type = VDIR; 665 break; 666 case 5: 667 vp->v_type = VREG; 668 break; 669 case 6: 670 vp->v_type = VBLK; 671 break; 672 case 7: 673 vp->v_type = VCHR; 674 break; 675 case 9: 676 vp->v_type = VFIFO; 677 break; 678 case 10: 679 vp->v_type = VSOCK; 680 break; 681 case 12: 682 vp->v_type = VLNK; 683 break; 684 } 685 *vpp = vp; 686 687 return (0); 688 } 689 690 struct ifid { 691 u_short ifid_len; 692 u_short ifid_pad; 693 int ifid_ino; 694 long ifid_start; 695 }; 696 697 static int 698 udf_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 699 { 700 struct ifid *ifhp; 701 struct vnode *nvp; 702 int error; 703 704 ifhp = (struct ifid *)fhp; 705 706 if ((error = VFS_VGET(mp, ifhp->ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 707 *vpp = NULLVP; 708 return (error); 709 } 710 711 *vpp = nvp; 712 vnode_create_vobject(*vpp, 0, curthread); 713 return (0); 714 } 715 716 static int 717 udf_vptofh (struct vnode *vp, struct fid *fhp) 718 { 719 struct udf_node *node; 720 struct ifid *ifhp; 721 722 node = VTON(vp); 723 ifhp = (struct ifid *)fhp; 724 ifhp->ifid_len = sizeof(struct ifid); 725 ifhp->ifid_ino = node->hash_id; 726 727 return (0); 728 } 729 730 static int 731 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 732 { 733 union udf_pmap *pmap; 734 struct part_map_spare *pms; 735 struct regid *pmap_id; 736 struct buf *bp; 737 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 738 int i, ptype, psize, error; 739 740 for (i = 0; i < le32toh(lvd->n_pm); i++) { 741 pmap = (union udf_pmap *)&lvd->maps[i * UDF_PMAP_SIZE]; 742 ptype = pmap->data[0]; 743 psize = pmap->data[1]; 744 if (((ptype != 1) && (ptype != 2)) || 745 ((psize != UDF_PMAP_SIZE) && (psize != 6))) { 746 printf("Invalid partition map found\n"); 747 return (1); 748 } 749 750 if (ptype == 1) { 751 /* Type 1 map. We don't care */ 752 continue; 753 } 754 755 /* Type 2 map. Gotta find out the details */ 756 pmap_id = (struct regid *)&pmap->data[4]; 757 bzero(®id_id[0], UDF_REGID_ID_SIZE); 758 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 759 760 if (bcmp(®id_id[0], "*UDF Sparable Partition", 761 UDF_REGID_ID_SIZE)) { 762 printf("Unsupported partition map: %s\n", ®id_id[0]); 763 return (1); 764 } 765 766 pms = &pmap->pms; 767 MALLOC(udfmp->s_table, struct udf_sparing_table *, 768 le32toh(pms->st_size), M_UDFMOUNT, M_NOWAIT | M_ZERO); 769 if (udfmp->s_table == NULL) 770 return (ENOMEM); 771 772 /* Calculate the number of sectors per packet. */ 773 /* XXX Logical or physical? */ 774 udfmp->p_sectors = le16toh(pms->packet_len) / udfmp->bsize; 775 776 /* 777 * XXX If reading the first Sparing Table fails, should look 778 * for another table. 779 */ 780 if ((error = udf_readlblks(udfmp, le32toh(pms->st_loc[0]), 781 le32toh(pms->st_size), &bp)) != 0) { 782 if (bp != NULL) 783 brelse(bp); 784 printf("Failed to read Sparing Table at sector %d\n", 785 le32toh(pms->st_loc[0])); 786 return (error); 787 } 788 bcopy(bp->b_data, udfmp->s_table, le32toh(pms->st_size)); 789 brelse(bp); 790 791 if (udf_checktag(&udfmp->s_table->tag, 0)) { 792 printf("Invalid sparing table found\n"); 793 return (EINVAL); 794 } 795 796 /* See how many valid entries there are here. The list is 797 * supposed to be sorted. 0xfffffff0 and higher are not valid 798 */ 799 for (i = 0; i < le16toh(udfmp->s_table->rt_l); i++) { 800 udfmp->s_table_entries = i; 801 if (le32toh(udfmp->s_table->entries[i].org) >= 802 0xfffffff0) 803 break; 804 } 805 } 806 807 return (0); 808 } 809