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/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, struct thread *td) 190 { 191 struct vnode *devvp; /* vnode of the mount device */ 192 struct udf_mnt *imp = 0; 193 struct vfsoptlist *opts; 194 char *fspec, *cs_disk, *cs_local; 195 int error, len, *udf_flags; 196 struct nameidata nd, *ndp = &nd; 197 198 opts = mp->mnt_optnew; 199 200 /* 201 * Unconditionally mount as read-only. 202 */ 203 MNT_ILOCK(mp); 204 mp->mnt_flag |= MNT_RDONLY; 205 MNT_IUNLOCK(mp); 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 return (0); 221 } 222 223 /* Check that the mount device exists */ 224 if (fspec == NULL) 225 return (EINVAL); 226 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspec, td); 227 if ((error = namei(ndp))) 228 return (error); 229 NDFREE(ndp, NDF_ONLY_PNBUF); 230 devvp = ndp->ni_vp; 231 232 if (vn_isdisk(devvp, &error) == 0) { 233 vput(devvp); 234 return (error); 235 } 236 237 /* Check the access rights on the mount device */ 238 error = VOP_ACCESS(devvp, VREAD, td->td_ucred, td); 239 if (error) 240 error = priv_check(td, PRIV_VFS_MOUNT_PERM); 241 if (error) { 242 vput(devvp); 243 return (error); 244 } 245 246 if ((error = udf_mountfs(devvp, mp))) { 247 vrele(devvp); 248 return (error); 249 } 250 251 imp = VFSTOUDFFS(mp); 252 253 udf_flags = NULL; 254 error = vfs_getopt(opts, "flags", (void **)&udf_flags, &len); 255 if (error || len != sizeof(int)) 256 return (EINVAL); 257 imp->im_flags = *udf_flags; 258 259 if (imp->im_flags & UDFMNT_KICONV && udf_iconv) { 260 cs_disk = NULL; 261 error = vfs_getopt(opts, "cs_disk", (void **)&cs_disk, &len); 262 if (!error && cs_disk[len - 1] != '\0') 263 return (EINVAL); 264 cs_local = NULL; 265 error = vfs_getopt(opts, "cs_local", (void **)&cs_local, &len); 266 if (!error && cs_local[len - 1] != '\0') 267 return (EINVAL); 268 udf_iconv->open(cs_local, cs_disk, &imp->im_d2l); 269 #if 0 270 udf_iconv->open(cs_disk, cs_local, &imp->im_l2d); 271 #endif 272 } 273 274 vfs_mountedfrom(mp, fspec); 275 return 0; 276 }; 277 278 /* 279 * Check the descriptor tag for both the correct id and correct checksum. 280 * Return zero if all is good, EINVAL if not. 281 */ 282 int 283 udf_checktag(struct desc_tag *tag, uint16_t id) 284 { 285 uint8_t *itag; 286 uint8_t i, cksum = 0; 287 288 itag = (uint8_t *)tag; 289 290 if (le16toh(tag->id) != id) 291 return (EINVAL); 292 293 for (i = 0; i < 16; i++) 294 cksum = cksum + itag[i]; 295 cksum = cksum - itag[4]; 296 297 if (cksum == tag->cksum) 298 return (0); 299 300 return (EINVAL); 301 } 302 303 static int 304 udf_mountfs(struct vnode *devvp, struct mount *mp) 305 { 306 struct buf *bp = NULL; 307 struct cdev *dev; 308 struct anchor_vdp avdp; 309 struct udf_mnt *udfmp = NULL; 310 struct part_desc *pd; 311 struct logvol_desc *lvd; 312 struct fileset_desc *fsd; 313 struct file_entry *root_fentry; 314 uint32_t sector, size, mvds_start, mvds_end; 315 uint32_t logical_secsize; 316 uint32_t fsd_offset = 0; 317 uint16_t part_num = 0, fsd_part = 0; 318 int error = EINVAL; 319 int logvol_found = 0, part_found = 0, fsd_found = 0; 320 int bsize; 321 struct g_consumer *cp; 322 struct bufobj *bo; 323 324 dev = devvp->v_rdev; 325 dev_ref(dev); 326 DROP_GIANT(); 327 g_topology_lock(); 328 error = g_vfs_open(devvp, &cp, "udf", 0); 329 g_topology_unlock(); 330 PICKUP_GIANT(); 331 VOP_UNLOCK(devvp, 0); 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_MPSAFE | MNTK_LOOKUP_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 udfmp->bmask = udfmp->bsize - 1; 415 udfmp->bshift = ffs(udfmp->bsize) - 1; 416 fsd_part = le16toh(lvd->_lvd_use.fsd_loc.loc.part_num); 417 fsd_offset = le32toh(lvd->_lvd_use.fsd_loc.loc.lb_num); 418 if (udf_find_partmaps(udfmp, lvd)) 419 break; 420 logvol_found = 1; 421 } 422 pd = (struct part_desc *)bp->b_data; 423 if (!udf_checktag(&pd->tag, TAGID_PARTITION)) { 424 part_found = 1; 425 part_num = le16toh(pd->part_num); 426 udfmp->part_len = le32toh(pd->part_len); 427 udfmp->part_start = le32toh(pd->start_loc); 428 } 429 430 brelse(bp); 431 bp = NULL; 432 if ((part_found) && (logvol_found)) 433 break; 434 } 435 436 if (!part_found || !logvol_found) { 437 error = EINVAL; 438 goto bail; 439 } 440 441 if (fsd_part != part_num) { 442 printf("FSD does not lie within the partition!\n"); 443 error = EINVAL; 444 goto bail; 445 } 446 447 448 /* 449 * Grab the Fileset Descriptor 450 * Thanks to Chuck McCrobie <mccrobie@cablespeed.com> for pointing 451 * me in the right direction here. 452 */ 453 sector = udfmp->part_start + fsd_offset; 454 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 455 printf("Cannot read sector %d of FSD\n", sector); 456 goto bail; 457 } 458 fsd = (struct fileset_desc *)bp->b_data; 459 if (!udf_checktag(&fsd->tag, TAGID_FSD)) { 460 fsd_found = 1; 461 bcopy(&fsd->rootdir_icb, &udfmp->root_icb, 462 sizeof(struct long_ad)); 463 } 464 465 brelse(bp); 466 bp = NULL; 467 468 if (!fsd_found) { 469 printf("Couldn't find the fsd\n"); 470 error = EINVAL; 471 goto bail; 472 } 473 474 /* 475 * Find the file entry for the root directory. 476 */ 477 sector = le32toh(udfmp->root_icb.loc.lb_num) + udfmp->part_start; 478 size = le32toh(udfmp->root_icb.len); 479 if ((error = udf_readdevblks(udfmp, sector, size, &bp)) != 0) { 480 printf("Cannot read sector %d\n", sector); 481 goto bail; 482 } 483 484 root_fentry = (struct file_entry *)bp->b_data; 485 if ((error = udf_checktag(&root_fentry->tag, TAGID_FENTRY))) { 486 printf("Invalid root file entry!\n"); 487 goto bail; 488 } 489 490 brelse(bp); 491 bp = NULL; 492 493 return 0; 494 495 bail: 496 if (udfmp != NULL) 497 free(udfmp, M_UDFMOUNT); 498 if (bp != NULL) 499 brelse(bp); 500 if (cp != NULL) { 501 DROP_GIANT(); 502 g_topology_lock(); 503 g_vfs_close(cp); 504 g_topology_unlock(); 505 PICKUP_GIANT(); 506 } 507 dev_rel(dev); 508 return error; 509 }; 510 511 static int 512 udf_unmount(struct mount *mp, int mntflags, struct thread *td) 513 { 514 struct udf_mnt *udfmp; 515 int error, flags = 0; 516 517 udfmp = VFSTOUDFFS(mp); 518 519 if (mntflags & MNT_FORCE) 520 flags |= FORCECLOSE; 521 522 if ((error = vflush(mp, 0, flags, td))) 523 return (error); 524 525 if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) { 526 if (udfmp->im_d2l) 527 udf_iconv->close(udfmp->im_d2l); 528 #if 0 529 if (udfmp->im_l2d) 530 udf_iconv->close(udfmp->im_l2d); 531 #endif 532 } 533 534 DROP_GIANT(); 535 g_topology_lock(); 536 g_vfs_close(udfmp->im_cp); 537 g_topology_unlock(); 538 PICKUP_GIANT(); 539 vrele(udfmp->im_devvp); 540 dev_rel(udfmp->im_dev); 541 542 if (udfmp->s_table != NULL) 543 free(udfmp->s_table, M_UDFMOUNT); 544 545 free(udfmp, M_UDFMOUNT); 546 547 mp->mnt_data = NULL; 548 MNT_ILOCK(mp); 549 mp->mnt_flag &= ~MNT_LOCAL; 550 MNT_IUNLOCK(mp); 551 552 return (0); 553 } 554 555 static int 556 udf_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td) 557 { 558 struct udf_mnt *udfmp; 559 ino_t id; 560 561 udfmp = VFSTOUDFFS(mp); 562 563 id = udf_getid(&udfmp->root_icb); 564 565 return (udf_vget(mp, id, flags, vpp)); 566 } 567 568 static int 569 udf_statfs(struct mount *mp, struct statfs *sbp, struct thread *td) 570 { 571 struct udf_mnt *udfmp; 572 573 udfmp = VFSTOUDFFS(mp); 574 575 sbp->f_bsize = udfmp->bsize; 576 sbp->f_iosize = udfmp->bsize; 577 sbp->f_blocks = udfmp->part_len; 578 sbp->f_bfree = 0; 579 sbp->f_bavail = 0; 580 sbp->f_files = 0; 581 sbp->f_ffree = 0; 582 return 0; 583 } 584 585 int 586 udf_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp) 587 { 588 struct buf *bp; 589 struct vnode *devvp; 590 struct udf_mnt *udfmp; 591 struct thread *td; 592 struct vnode *vp; 593 struct udf_node *unode; 594 struct file_entry *fe; 595 int error, sector, size; 596 597 error = vfs_hash_get(mp, ino, flags, curthread, vpp, NULL, NULL); 598 if (error || *vpp != NULL) 599 return (error); 600 601 /* 602 * We must promote to an exclusive lock for vnode creation. This 603 * can happen if lookup is passed LOCKSHARED. 604 */ 605 if ((flags & LK_TYPE_MASK) == LK_SHARED) { 606 flags &= ~LK_TYPE_MASK; 607 flags |= LK_EXCLUSIVE; 608 } 609 610 /* 611 * We do not lock vnode creation as it is believed to be too 612 * expensive for such rare case as simultaneous creation of vnode 613 * for same ino by different processes. We just allow them to race 614 * and check later to decide who wins. Let the race begin! 615 */ 616 617 td = curthread; 618 udfmp = VFSTOUDFFS(mp); 619 620 unode = uma_zalloc(udf_zone_node, M_WAITOK | M_ZERO); 621 622 if ((error = udf_allocv(mp, &vp, td))) { 623 printf("Error from udf_allocv\n"); 624 uma_zfree(udf_zone_node, unode); 625 return (error); 626 } 627 628 unode->i_vnode = vp; 629 unode->hash_id = ino; 630 unode->udfmp = udfmp; 631 vp->v_data = unode; 632 633 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL); 634 error = insmntque(vp, mp); 635 if (error != 0) { 636 uma_zfree(udf_zone_node, unode); 637 return (error); 638 } 639 error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL); 640 if (error || *vpp != NULL) 641 return (error); 642 643 /* 644 * Copy in the file entry. Per the spec, the size can only be 1 block. 645 */ 646 sector = ino + udfmp->part_start; 647 devvp = udfmp->im_devvp; 648 if ((error = RDSECTOR(devvp, sector, udfmp->bsize, &bp)) != 0) { 649 printf("Cannot read sector %d\n", sector); 650 vgone(vp); 651 vput(vp); 652 brelse(bp); 653 *vpp = NULL; 654 return (error); 655 } 656 657 fe = (struct file_entry *)bp->b_data; 658 if (udf_checktag(&fe->tag, TAGID_FENTRY)) { 659 printf("Invalid file entry!\n"); 660 vgone(vp); 661 vput(vp); 662 brelse(bp); 663 *vpp = NULL; 664 return (ENOMEM); 665 } 666 size = UDF_FENTRY_SIZE + le32toh(fe->l_ea) + le32toh(fe->l_ad); 667 unode->fentry = malloc(size, M_UDFFENTRY, M_NOWAIT | M_ZERO); 668 if (unode->fentry == NULL) { 669 printf("Cannot allocate file entry block\n"); 670 vgone(vp); 671 vput(vp); 672 brelse(bp); 673 *vpp = NULL; 674 return (ENOMEM); 675 } 676 677 bcopy(bp->b_data, unode->fentry, size); 678 679 brelse(bp); 680 bp = NULL; 681 682 switch (unode->fentry->icbtag.file_type) { 683 default: 684 vp->v_type = VBAD; 685 break; 686 case 4: 687 vp->v_type = VDIR; 688 break; 689 case 5: 690 vp->v_type = VREG; 691 break; 692 case 6: 693 vp->v_type = VBLK; 694 break; 695 case 7: 696 vp->v_type = VCHR; 697 break; 698 case 9: 699 vp->v_type = VFIFO; 700 vp->v_op = &udf_fifoops; 701 break; 702 case 10: 703 vp->v_type = VSOCK; 704 break; 705 case 12: 706 vp->v_type = VLNK; 707 break; 708 } 709 710 if (vp->v_type != VFIFO) 711 VN_LOCK_ASHARE(vp); 712 713 if (ino == udf_getid(&udfmp->root_icb)) 714 vp->v_vflag |= VV_ROOT; 715 716 *vpp = vp; 717 718 return (0); 719 } 720 721 static int 722 udf_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 723 { 724 struct ifid *ifhp; 725 struct vnode *nvp; 726 struct udf_node *np; 727 off_t fsize; 728 int error; 729 730 ifhp = (struct ifid *)fhp; 731 732 if ((error = VFS_VGET(mp, ifhp->ifid_ino, LK_EXCLUSIVE, &nvp)) != 0) { 733 *vpp = NULLVP; 734 return (error); 735 } 736 737 np = VTON(nvp); 738 fsize = le64toh(np->fentry->inf_len); 739 740 *vpp = nvp; 741 vnode_create_vobject(*vpp, fsize, curthread); 742 return (0); 743 } 744 745 static int 746 udf_find_partmaps(struct udf_mnt *udfmp, struct logvol_desc *lvd) 747 { 748 struct part_map_spare *pms; 749 struct regid *pmap_id; 750 struct buf *bp; 751 unsigned char regid_id[UDF_REGID_ID_SIZE + 1]; 752 int i, k, ptype, psize, error; 753 uint8_t *pmap = (uint8_t *) &lvd->maps[0]; 754 755 for (i = 0; i < le32toh(lvd->n_pm); i++) { 756 ptype = pmap[0]; 757 psize = pmap[1]; 758 if (((ptype != 1) && (ptype != 2)) || 759 ((psize != UDF_PMAP_TYPE1_SIZE) && 760 (psize != UDF_PMAP_TYPE2_SIZE))) { 761 printf("Invalid partition map found\n"); 762 return (1); 763 } 764 765 if (ptype == 1) { 766 /* Type 1 map. We don't care */ 767 pmap += UDF_PMAP_TYPE1_SIZE; 768 continue; 769 } 770 771 /* Type 2 map. Gotta find out the details */ 772 pmap_id = (struct regid *)&pmap[4]; 773 bzero(®id_id[0], UDF_REGID_ID_SIZE); 774 bcopy(&pmap_id->id[0], ®id_id[0], UDF_REGID_ID_SIZE); 775 776 if (bcmp(®id_id[0], "*UDF Sparable Partition", 777 UDF_REGID_ID_SIZE)) { 778 printf("Unsupported partition map: %s\n", ®id_id[0]); 779 return (1); 780 } 781 782 pms = (struct part_map_spare *)pmap; 783 pmap += UDF_PMAP_TYPE2_SIZE; 784 udfmp->s_table = malloc(le32toh(pms->st_size), 785 M_UDFMOUNT, M_NOWAIT | M_ZERO); 786 if (udfmp->s_table == NULL) 787 return (ENOMEM); 788 789 /* Calculate the number of sectors per packet. */ 790 /* XXX Logical or physical? */ 791 udfmp->p_sectors = le16toh(pms->packet_len) / udfmp->bsize; 792 793 /* 794 * XXX If reading the first Sparing Table fails, should look 795 * for another table. 796 */ 797 if ((error = udf_readdevblks(udfmp, le32toh(pms->st_loc[0]), 798 le32toh(pms->st_size), &bp)) != 0) { 799 if (bp != NULL) 800 brelse(bp); 801 printf("Failed to read Sparing Table at sector %d\n", 802 le32toh(pms->st_loc[0])); 803 free(udfmp->s_table, M_UDFMOUNT); 804 return (error); 805 } 806 bcopy(bp->b_data, udfmp->s_table, le32toh(pms->st_size)); 807 brelse(bp); 808 809 if (udf_checktag(&udfmp->s_table->tag, 0)) { 810 printf("Invalid sparing table found\n"); 811 free(udfmp->s_table, M_UDFMOUNT); 812 return (EINVAL); 813 } 814 815 /* See how many valid entries there are here. The list is 816 * supposed to be sorted. 0xfffffff0 and higher are not valid 817 */ 818 for (k = 0; k < le16toh(udfmp->s_table->rt_l); k++) { 819 udfmp->s_table_entries = k; 820 if (le32toh(udfmp->s_table->entries[k].org) >= 821 0xfffffff0) 822 break; 823 } 824 } 825 826 return (0); 827 } 828