1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 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/priv.h> 88 #include <sys/proc.h> 89 #include <sys/queue.h> 90 #include <sys/vnode.h> 91 #include <sys/endian.h> 92 93 #include <geom/geom.h> 94 #include <geom/geom_vfs.h> 95 96 #include <vm/uma.h> 97 98 #include <fs/udf/ecma167-udf.h> 99 #include <fs/udf/osta.h> 100 #include <fs/udf/udf.h> 101 #include <fs/udf/udf_mount.h> 102 103 static MALLOC_DEFINE(M_UDFMOUNT, "udf_mount", "UDF mount structure"); 104 MALLOC_DEFINE(M_UDFFENTRY, "udf_fentry", "UDF file entry structure"); 105 106 struct iconv_functions *udf_iconv = NULL; 107 108 /* Zones */ 109 uma_zone_t udf_zone_trans = NULL; 110 uma_zone_t udf_zone_node = NULL; 111 uma_zone_t udf_zone_ds = NULL; 112 113 static vfs_init_t udf_init; 114 static vfs_uninit_t udf_uninit; 115 static vfs_mount_t udf_mount; 116 static vfs_root_t udf_root; 117 static vfs_statfs_t udf_statfs; 118 static vfs_unmount_t udf_unmount; 119 static vfs_fhtovp_t udf_fhtovp; 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 }; 133 VFS_SET(udf_vfsops, udf, VFCF_READONLY); 134 135 MODULE_VERSION(udf, 1); 136 137 static int udf_mountfs(struct vnode *, struct mount *); 138 139 static int 140 udf_init(struct vfsconf *foo) 141 { 142 143 /* 144 * This code used to pre-allocate a certain number of pages for each 145 * pool, reducing the need to grow the zones later on. UMA doesn't 146 * advertise any such functionality, unfortunately =-< 147 */ 148 udf_zone_trans = uma_zcreate("UDF translation buffer, zone", MAXNAMLEN * 149 sizeof(unicode_t), NULL, NULL, NULL, NULL, 0, 0); 150 151 udf_zone_node = uma_zcreate("UDF Node zone", sizeof(struct udf_node), 152 NULL, NULL, NULL, NULL, 0, 0); 153 154 udf_zone_ds = uma_zcreate("UDF Dirstream zone", 155 sizeof(struct udf_dirstream), NULL, NULL, NULL, NULL, 0, 0); 156 157 if ((udf_zone_node == NULL) || (udf_zone_trans == NULL) || 158 (udf_zone_ds == NULL)) { 159 printf("Cannot create allocation zones.\n"); 160 return (ENOMEM); 161 } 162 163 return 0; 164 } 165 166 static int 167 udf_uninit(struct vfsconf *foo) 168 { 169 170 if (udf_zone_trans != NULL) { 171 uma_zdestroy(udf_zone_trans); 172 udf_zone_trans = NULL; 173 } 174 175 if (udf_zone_node != NULL) { 176 uma_zdestroy(udf_zone_node); 177 udf_zone_node = NULL; 178 } 179 180 if (udf_zone_ds != NULL) { 181 uma_zdestroy(udf_zone_ds); 182 udf_zone_ds = NULL; 183 } 184 185 return (0); 186 } 187 188 static int 189 udf_mount(struct mount *mp) 190 { 191 struct vnode *devvp; /* vnode of the mount device */ 192 struct thread *td; 193 struct udf_mnt *imp = NULL; 194 struct vfsoptlist *opts; 195 char *fspec, *cs_disk, *cs_local; 196 int error, len, *udf_flags; 197 struct nameidata nd, *ndp = &nd; 198 199 td = curthread; 200 opts = mp->mnt_optnew; 201 202 /* 203 * Unconditionally mount as read-only. 204 */ 205 MNT_ILOCK(mp); 206 mp->mnt_flag |= MNT_RDONLY; 207 MNT_IUNLOCK(mp); 208 209 /* 210 * No root filesystem support. Probably not a big deal, since the 211 * bootloader doesn't understand UDF. 212 */ 213 if (mp->mnt_flag & MNT_ROOTFS) 214 return (ENOTSUP); 215 216 fspec = NULL; 217 error = vfs_getopt(opts, "from", (void **)&fspec, &len); 218 if (!error && fspec[len - 1] != '\0') 219 return (EINVAL); 220 221 if (mp->mnt_flag & MNT_UPDATE) { 222 return (0); 223 } 224 225 /* Check that the mount device exists */ 226 if (fspec == NULL) 227 return (EINVAL); 228 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec); 229 if ((error = namei(ndp))) 230 return (error); 231 NDFREE_PNBUF(ndp); 232 devvp = ndp->ni_vp; 233 234 if (!vn_isdisk_error(devvp, &error)) { 235 vput(devvp); 236 return (error); 237 } 238 239 /* Check the access rights on the mount device */ 240 error = VOP_ACCESS(devvp, VREAD, td->td_ucred, td); 241 if (error) 242 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 243 if (error) { 244 vput(devvp); 245 return (error); 246 } 247 248 if ((error = udf_mountfs(devvp, mp))) { 249 vrele(devvp); 250 return (error); 251 } 252 253 imp = VFSTOUDFFS(mp); 254 255 udf_flags = NULL; 256 error = vfs_getopt(opts, "flags", (void **)&udf_flags, &len); 257 if (error || len != sizeof(int)) 258 return (EINVAL); 259 imp->im_flags = *udf_flags; 260 261 if (imp->im_flags & UDFMNT_KICONV && udf_iconv) { 262 cs_disk = NULL; 263 error = vfs_getopt(opts, "cs_disk", (void **)&cs_disk, &len); 264 if (!error && cs_disk[len - 1] != '\0') 265 return (EINVAL); 266 cs_local = NULL; 267 error = vfs_getopt(opts, "cs_local", (void **)&cs_local, &len); 268 if (!error && cs_local[len - 1] != '\0') 269 return (EINVAL); 270 udf_iconv->open(cs_local, cs_disk, &imp->im_d2l); 271 #if 0 272 udf_iconv->open(cs_disk, cs_local, &imp->im_l2d); 273 #endif 274 } 275 276 vfs_mountedfrom(mp, fspec); 277 return 0; 278 }; 279 280 /* 281 * Check the descriptor tag for both the correct id and correct checksum. 282 * Return zero if all is good, EINVAL if not. 283 */ 284 int 285 udf_checktag(struct desc_tag *tag, uint16_t id) 286 { 287 uint8_t *itag; 288 uint8_t i, cksum = 0; 289 290 itag = (uint8_t *)tag; 291 292 if (le16toh(tag->id) != id) 293 return (EINVAL); 294 295 for (i = 0; i < 16; i++) 296 cksum = cksum + itag[i]; 297 cksum = cksum - itag[4]; 298 299 if (cksum == tag->cksum) 300 return (0); 301 302 return (EINVAL); 303 } 304 305 static int 306 udf_mountfs(struct vnode *devvp, struct mount *mp) 307 { 308 struct buf *bp = NULL; 309 struct cdev *dev; 310 struct anchor_vdp avdp; 311 struct udf_mnt *udfmp = NULL; 312 struct part_desc *pd; 313 struct logvol_desc *lvd; 314 struct fileset_desc *fsd; 315 struct file_entry *root_fentry; 316 uint32_t sector, size, mvds_start, mvds_end; 317 uint32_t logical_secsize; 318 uint32_t fsd_offset = 0; 319 uint16_t part_num = 0, fsd_part = 0; 320 int error = EINVAL; 321 int logvol_found = 0, part_found = 0, fsd_found = 0; 322 int bsize; 323 struct g_consumer *cp; 324 struct bufobj *bo; 325 326 dev = devvp->v_rdev; 327 dev_ref(dev); 328 g_topology_lock(); 329 error = g_vfs_open(devvp, &cp, "udf", 0); 330 g_topology_unlock(); 331 VOP_UNLOCK(devvp); 332 if (error) 333 goto bail; 334 335 bo = &devvp->v_bufobj; 336 337 if (devvp->v_rdev->si_iosize_max != 0) 338 mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max; 339 if (mp->mnt_iosize_max > maxphys) 340 mp->mnt_iosize_max = maxphys; 341 342 /* XXX: should be M_WAITOK */ 343 udfmp = malloc(sizeof(struct udf_mnt), M_UDFMOUNT, 344 M_NOWAIT | M_ZERO); 345 if (udfmp == NULL) { 346 printf("Cannot allocate UDF mount struct\n"); 347 error = ENOMEM; 348 goto bail; 349 } 350 351 mp->mnt_data = udfmp; 352 mp->mnt_stat.f_fsid.val[0] = dev2udev(devvp->v_rdev); 353 mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; 354 MNT_ILOCK(mp); 355 mp->mnt_flag |= MNT_LOCAL; 356 mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED; 357 MNT_IUNLOCK(mp); 358 udfmp->im_mountp = mp; 359 udfmp->im_dev = dev; 360 udfmp->im_devvp = devvp; 361 udfmp->im_d2l = NULL; 362 udfmp->im_cp = cp; 363 udfmp->im_bo = bo; 364 365 #if 0 366 udfmp->im_l2d = NULL; 367 #endif 368 /* 369 * The UDF specification defines a logical sectorsize of 2048 370 * for DVD media. 371 */ 372 logical_secsize = 2048; 373 374 if (((logical_secsize % cp->provider->sectorsize) != 0) || 375 (logical_secsize < cp->provider->sectorsize)) { 376 error = EINVAL; 377 goto bail; 378 } 379 380 bsize = cp->provider->sectorsize; 381 382 /* 383 * Get the Anchor Volume Descriptor Pointer from sector 256. 384 * XXX Should also check sector n - 256, n, and 512. 385 */ 386 sector = 256; 387 if ((error = bread(devvp, sector * btodb(logical_secsize), bsize, 388 NOCRED, &bp)) != 0) 389 goto bail; 390 if ((error = udf_checktag((struct desc_tag *)bp->b_data, TAGID_ANCHOR))) 391 goto bail; 392 393 bcopy(bp->b_data, &avdp, sizeof(struct anchor_vdp)); 394 brelse(bp); 395 bp = NULL; 396 397 /* 398 * Extract the Partition Descriptor and Logical Volume Descriptor 399 * from the Volume Descriptor Sequence. 400 * XXX Should we care about the partition type right now? 401 * XXX What about multiple partitions? 402 */ 403 mvds_start = le32toh(avdp.main_vds_ex.loc); 404 mvds_end = mvds_start + (le32toh(avdp.main_vds_ex.len) - 1) / bsize; 405 for (sector = mvds_start; sector < mvds_end; sector++) { 406 if ((error = bread(devvp, sector * btodb(logical_secsize), 407 bsize, NOCRED, &bp)) != 0) { 408 printf("Can't read sector %d of VDS\n", sector); 409 goto bail; 410 } 411 lvd = (struct logvol_desc *)bp->b_data; 412 if (!udf_checktag(&lvd->tag, TAGID_LOGVOL)) { 413 udfmp->bsize = le32toh(lvd->lb_size); 414 if (udfmp->bsize < 0 || udfmp->bsize > maxbcachebuf) { 415 printf("lvd block size %d\n", udfmp->bsize); 416 error = EINVAL; 417 goto bail; 418 } 419 udfmp->bmask = udfmp->bsize - 1; 420 udfmp->bshift = ffs(udfmp->bsize) - 1; 421 fsd_part = le16toh(lvd->_lvd_use.fsd_loc.loc.part_num); 422 fsd_offset = le32toh(lvd->_lvd_use.fsd_loc.loc.lb_num); 423 if (udf_find_partmaps(udfmp, lvd)) 424 break; 425 logvol_found = 1; 426 } 427 pd = (struct part_desc *)bp->b_data; 428 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 429 part_found = 1; 430 part_num = le16toh(pd->part_num); 431 udfmp->part_len = le32toh(pd->part_len); 432 udfmp->part_start = le32toh(pd->start_loc); 433 } 434 435 brelse(bp); 436 bp = NULL; 437 if ((part_found) && (logvol_found)) 438 break; 439 } 440 441 if (!part_found || !logvol_found) { 442 error = EINVAL; 443 goto bail; 444 } 445 446 if (fsd_part != part_num) { 447 printf("FSD does not lie within the partition!\n"); 448 error = EINVAL; 449 goto bail; 450 } 451 452 /* 453 * Grab the Fileset Descriptor 454 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 455 * me in the right direction here. 456 */ 457 sector = udfmp->part_start + fsd_offset; 458 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 459 printf("Cannot read sector %d of FSD\n", sector); 460 goto bail; 461 } 462 fsd = (struct fileset_desc *)bp->b_data; 463 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 464 fsd_found = 1; 465 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 466 sizeof(struct long_ad)); 467 } 468 469 brelse(bp); 470 bp = NULL; 471 472 if (!fsd_found) { 473 printf("Couldn't find the fsd\n"); 474 error = EINVAL; 475 goto bail; 476 } 477 478 /* 479 * Find the file entry for the root directory. 480 */ 481 sector = le32toh(udfmp->root_icb.loc.lb_num) + udfmp->part_start; 482 size = le32toh(udfmp->root_icb.len); 483 if (size < UDF_FENTRY_SIZE) { 484 printf("Invalid root directory file entry length %u\n", 485 size); 486 goto bail; 487 } 488 if ((error = udf_readdevblks(udfmp, sector, size, &bp)) != 0) { 489 printf("Cannot read sector %d\n", sector); 490 goto bail; 491 } 492 493 root_fentry = (struct file_entry *)bp->b_data; 494 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 495 printf("Invalid root file entry!\n"); 496 goto bail; 497 } 498 499 brelse(bp); 500 bp = NULL; 501 502 return 0; 503 504 bail: 505 if (udfmp != NULL) 506 free(udfmp, M_UDFMOUNT); 507 if (bp != NULL) 508 brelse(bp); 509 if (cp != NULL) { 510 g_topology_lock(); 511 g_vfs_close(cp); 512 g_topology_unlock(); 513 } 514 dev_rel(dev); 515 return error; 516 }; 517 518 static int 519 udf_unmount(struct mount *mp, int mntflags) 520 { 521 struct udf_mnt *udfmp; 522 int error, flags = 0; 523 524 udfmp = VFSTOUDFFS(mp); 525 526 if (mntflags & MNT_FORCE) 527 flags |= FORCECLOSE; 528 529 if ((error = vflush(mp, 0, flags, curthread))) 530 return (error); 531 532 if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) { 533 if (udfmp->im_d2l) 534 udf_iconv->close(udfmp->im_d2l); 535 #if 0 536 if (udfmp->im_l2d) 537 udf_iconv->close(udfmp->im_l2d); 538 #endif 539 } 540 541 g_topology_lock(); 542 g_vfs_close(udfmp->im_cp); 543 g_topology_unlock(); 544 vrele(udfmp->im_devvp); 545 dev_rel(udfmp->im_dev); 546 547 if (udfmp->s_table != NULL) 548 free(udfmp->s_table, M_UDFMOUNT); 549 550 free(udfmp, M_UDFMOUNT); 551 552 mp->mnt_data = NULL; 553 return (0); 554 } 555 556 static int 557 udf_root(struct mount *mp, int flags, struct vnode **vpp) 558 { 559 struct udf_mnt *udfmp; 560 ino_t id; 561 562 udfmp = VFSTOUDFFS(mp); 563 564 id = udf_getid(&udfmp->root_icb); 565 566 return (udf_vget(mp, id, flags, vpp)); 567 } 568 569 static int 570 udf_statfs(struct mount *mp, struct statfs *sbp) 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 uint32_t lea, lad; 597 int error, sector, size; 598 599 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 600 if (error || *vpp != NULL) 601 return (error); 602 603 /* 604 * We must promote to an exclusive lock for vnode creation. This 605 * can happen if lookup is passed LOCKSHARED. 606 */ 607 if ((flags & LK_TYPE_MASK) == LK_SHARED) { 608 flags &= ~LK_TYPE_MASK; 609 flags |= LK_EXCLUSIVE; 610 } 611 612 /* 613 * We do not lock vnode creation as it is believed to be too 614 * expensive for such rare case as simultaneous creation of vnode 615 * for same ino by different processes. We just allow them to race 616 * and check later to decide who wins. Let the race begin! 617 */ 618 619 td = curthread; 620 udfmp = VFSTOUDFFS(mp); 621 622 unode = uma_zalloc(udf_zone_node, M_WAITOK | M_ZERO); 623 624 if ((error = udf_allocv(mp, &vp, td))) { 625 printf("Error from udf_allocv\n"); 626 uma_zfree(udf_zone_node, unode); 627 return (error); 628 } 629 630 unode->i_vnode = vp; 631 unode->hash_id = ino; 632 unode->udfmp = udfmp; 633 vp->v_data = unode; 634 635 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL); 636 error = insmntque(vp, mp); 637 if (error != 0) { 638 uma_zfree(udf_zone_node, unode); 639 return (error); 640 } 641 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL); 642 if (error || *vpp != NULL) 643 return (error); 644 645 /* 646 * Copy in the file entry. Per the spec, the size can only be 1 block. 647 */ 648 sector = ino + udfmp->part_start; 649 devvp = udfmp->im_devvp; 650 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 651 printf("Cannot read sector %d\n", sector); 652 goto error; 653 } 654 655 /* 656 * File entry length validation. 657 */ 658 fe = (struct file_entry *)bp->b_data; 659 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 660 printf("Invalid file entry!\n"); 661 error = ENOMEM; 662 goto error; 663 } 664 lea = le32toh(fe->l_ea); 665 lad = le32toh(fe->l_ad); 666 if (lea > udfmp->bsize || lad > udfmp->bsize) { 667 printf("Invalid EA and AD lengths %u, %u\n", lea, lad); 668 error = EIO; 669 goto error; 670 } 671 size = UDF_FENTRY_SIZE + lea + lad; 672 if (size > udfmp->bsize) { 673 printf("Invalid file entry size %u\n", size); 674 error = EIO; 675 goto error; 676 } 677 678 unode->fentry = malloc(size, M_UDFFENTRY, M_NOWAIT | M_ZERO); 679 if (unode->fentry == NULL) { 680 printf("Cannot allocate file entry block\n"); 681 error = ENOMEM; 682 goto error; 683 } 684 685 bcopy(bp->b_data, unode->fentry, size); 686 687 brelse(bp); 688 bp = NULL; 689 690 switch (unode->fentry->icbtag.file_type) { 691 default: 692 vp->v_type = VBAD; 693 break; 694 case 4: 695 vp->v_type = VDIR; 696 break; 697 case 5: 698 vp->v_type = VREG; 699 break; 700 case 6: 701 vp->v_type = VBLK; 702 break; 703 case 7: 704 vp->v_type = VCHR; 705 break; 706 case 9: 707 vp->v_type = VFIFO; 708 vp->v_op = &udf_fifoops; 709 break; 710 case 10: 711 vp->v_type = VSOCK; 712 break; 713 case 12: 714 vp->v_type = VLNK; 715 break; 716 } 717 718 if (vp->v_type != VFIFO) 719 VN_LOCK_ASHARE(vp); 720 721 if (ino == udf_getid(&udfmp->root_icb)) 722 vp->v_vflag |= VV_ROOT; 723 724 vn_set_state(vp, VSTATE_CONSTRUCTED); 725 *vpp = vp; 726 727 return (0); 728 729 error: 730 vgone(vp); 731 vput(vp); 732 brelse(bp); 733 *vpp = NULL; 734 return (error); 735 } 736 737 static int 738 udf_fhtovp(struct mount *mp, struct fid *fhp, int flags, struct vnode **vpp) 739 { 740 struct ifid *ifhp; 741 struct vnode *nvp; 742 struct udf_node *np; 743 off_t fsize; 744 int error; 745 746 ifhp = (struct ifid *)fhp; 747 748 if ((error = VFS_VGET(mp, ifhp->ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 749 *vpp = NULLVP; 750 return (error); 751 } 752 753 np = VTON(nvp); 754 fsize = le64toh(np->fentry->inf_len); 755 756 *vpp = nvp; 757 vnode_create_vobject(*vpp, fsize, curthread); 758 return (0); 759 } 760 761 static int 762 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 763 { 764 struct part_map_spare *pms; 765 struct regid *pmap_id; 766 struct buf *bp; 767 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 768 int i, k, ptype, psize, error; 769 uint8_t *pmap = (uint8_t *) &lvd->maps[0]; 770 771 for (i = 0; i < le32toh(lvd->n_pm); i++) { 772 ptype = pmap[0]; 773 psize = pmap[1]; 774 if (((ptype != 1) && (ptype != 2)) || 775 ((psize != UDF_PMAP_TYPE1_SIZE) && 776 (psize != UDF_PMAP_TYPE2_SIZE))) { 777 printf("Invalid partition map found\n"); 778 return (1); 779 } 780 781 if (ptype == 1) { 782 /* Type 1 map. We don't care */ 783 pmap += UDF_PMAP_TYPE1_SIZE; 784 continue; 785 } 786 787 /* Type 2 map. Gotta find out the details */ 788 pmap_id = (struct regid *)&pmap[4]; 789 bzero(®id_id[0], UDF_REGID_ID_SIZE); 790 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 791 792 if (bcmp(®id_id[0], "*UDF Sparable Partition", 793 UDF_REGID_ID_SIZE)) { 794 printf("Unsupported partition map: %s\n", ®id_id[0]); 795 return (1); 796 } 797 798 pms = (struct part_map_spare *)pmap; 799 pmap += UDF_PMAP_TYPE2_SIZE; 800 udfmp->s_table = malloc(le32toh(pms->st_size), 801 M_UDFMOUNT, M_NOWAIT | M_ZERO); 802 if (udfmp->s_table == NULL) 803 return (ENOMEM); 804 805 /* Calculate the number of sectors per packet. */ 806 /* XXX Logical or physical? */ 807 udfmp->p_sectors = le16toh(pms->packet_len) / udfmp->bsize; 808 809 /* 810 * XXX If reading the first Sparing Table fails, should look 811 * for another table. 812 */ 813 if ((error = udf_readdevblks(udfmp, le32toh(pms->st_loc[0]), 814 le32toh(pms->st_size), &bp)) != 0) { 815 if (bp != NULL) 816 brelse(bp); 817 printf("Failed to read Sparing Table at sector %d\n", 818 le32toh(pms->st_loc[0])); 819 free(udfmp->s_table, M_UDFMOUNT); 820 return (error); 821 } 822 bcopy(bp->b_data, udfmp->s_table, le32toh(pms->st_size)); 823 brelse(bp); 824 825 if (udf_checktag(&udfmp->s_table->tag, 0)) { 826 printf("Invalid sparing table found\n"); 827 free(udfmp->s_table, M_UDFMOUNT); 828 return (EINVAL); 829 } 830 831 /* See how many valid entries there are here. The list is 832 * supposed to be sorted. 0xfffffff0 and higher are not valid 833 */ 834 for (k = 0; k < le16toh(udfmp->s_table->rt_l); k++) { 835 udfmp->s_table_entries = k; 836 if (le32toh(udfmp->s_table->entries[k].org) >= 837 0xfffffff0) 838 break; 839 } 840 } 841 842 return (0); 843 } 844