udf_subr.c revision 1.46
1 /* $NetBSD: udf_subr.c,v 1.46 2008/05/17 07:46:35 reinoud Exp $ */ 2 3 /* 4 * Copyright (c) 2006, 2008 Reinoud Zandijk 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 ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 30 #include <sys/cdefs.h> 31 #ifndef lint 32 __KERNEL_RCSID(0, "$NetBSD: udf_subr.c,v 1.46 2008/05/17 07:46:35 reinoud Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_quota.h" 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <sys/namei.h> 45 #include <sys/proc.h> 46 #include <sys/kernel.h> 47 #include <sys/vnode.h> 48 #include <miscfs/genfs/genfs_node.h> 49 #include <sys/mount.h> 50 #include <sys/buf.h> 51 #include <sys/file.h> 52 #include <sys/device.h> 53 #include <sys/disklabel.h> 54 #include <sys/ioctl.h> 55 #include <sys/malloc.h> 56 #include <sys/dirent.h> 57 #include <sys/stat.h> 58 #include <sys/conf.h> 59 #include <sys/kauth.h> 60 #include <dev/clock_subr.h> 61 62 #include <fs/udf/ecma167-udf.h> 63 #include <fs/udf/udf_mount.h> 64 65 #if defined(_KERNEL_OPT) 66 #include "opt_udf.h" 67 #endif 68 69 #include "udf.h" 70 #include "udf_subr.h" 71 #include "udf_bswap.h" 72 73 74 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 75 76 #define UDF_SET_SYSTEMFILE(vp) \ 77 /* XXXAD Is the vnode locked? */ \ 78 (vp)->v_vflag |= VV_SYSTEM; \ 79 vref(vp); \ 80 vput(vp); \ 81 82 extern int syncer_maxdelay; /* maximum delay time */ 83 extern int (**udf_vnodeop_p)(void *); 84 85 /* --------------------------------------------------------------------- */ 86 87 //#ifdef DEBUG 88 #if 1 89 90 #if 0 91 static void 92 udf_dumpblob(boid *blob, uint32_t dlen) 93 { 94 int i, j; 95 96 printf("blob = %p\n", blob); 97 printf("dump of %d bytes\n", dlen); 98 99 for (i = 0; i < dlen; i+ = 16) { 100 printf("%04x ", i); 101 for (j = 0; j < 16; j++) { 102 if (i+j < dlen) { 103 printf("%02x ", blob[i+j]); 104 } else { 105 printf(" "); 106 } 107 } 108 for (j = 0; j < 16; j++) { 109 if (i+j < dlen) { 110 if (blob[i+j]>32 && blob[i+j]! = 127) { 111 printf("%c", blob[i+j]); 112 } else { 113 printf("."); 114 } 115 } 116 } 117 printf("\n"); 118 } 119 printf("\n"); 120 Debugger(); 121 } 122 #endif 123 124 static void 125 udf_dump_discinfo(struct udf_mount *ump) 126 { 127 char bits[128]; 128 struct mmc_discinfo *di = &ump->discinfo; 129 130 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 131 return; 132 133 printf("Device/media info :\n"); 134 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 135 printf("\tderived class %d\n", di->mmc_class); 136 printf("\tsector size %d\n", di->sector_size); 137 printf("\tdisc state %d\n", di->disc_state); 138 printf("\tlast ses state %d\n", di->last_session_state); 139 printf("\tbg format state %d\n", di->bg_format_state); 140 printf("\tfrst track %d\n", di->first_track); 141 printf("\tfst on last ses %d\n", di->first_track_last_session); 142 printf("\tlst on last ses %d\n", di->last_track_last_session); 143 printf("\tlink block penalty %d\n", di->link_block_penalty); 144 bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 145 sizeof(bits)); 146 printf("\tdisc flags %s\n", bits); 147 printf("\tdisc id %x\n", di->disc_id); 148 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 149 150 printf("\tnum sessions %d\n", di->num_sessions); 151 printf("\tnum tracks %d\n", di->num_tracks); 152 153 bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 154 printf("\tcapabilities cur %s\n", bits); 155 bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 156 printf("\tcapabilities cap %s\n", bits); 157 } 158 #else 159 #define udf_dump_discinfo(a); 160 #endif 161 162 163 /* --------------------------------------------------------------------- */ 164 165 /* not called often */ 166 int 167 udf_update_discinfo(struct udf_mount *ump) 168 { 169 struct vnode *devvp = ump->devvp; 170 struct partinfo dpart; 171 struct mmc_discinfo *di; 172 int error; 173 174 DPRINTF(VOLUMES, ("read/update disc info\n")); 175 di = &ump->discinfo; 176 memset(di, 0, sizeof(struct mmc_discinfo)); 177 178 /* check if we're on a MMC capable device, i.e. CD/DVD */ 179 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 180 if (error == 0) { 181 udf_dump_discinfo(ump); 182 return 0; 183 } 184 185 /* disc partition support */ 186 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 187 if (error) 188 return ENODEV; 189 190 /* set up a disc info profile for partitions */ 191 di->mmc_profile = 0x01; /* disc type */ 192 di->mmc_class = MMC_CLASS_DISC; 193 di->disc_state = MMC_STATE_CLOSED; 194 di->last_session_state = MMC_STATE_CLOSED; 195 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 196 di->link_block_penalty = 0; 197 198 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 199 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 200 di->mmc_cap = di->mmc_cur; 201 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 202 203 /* TODO problem with last_possible_lba on resizable VND; request */ 204 di->last_possible_lba = dpart.part->p_size; 205 di->sector_size = dpart.disklab->d_secsize; 206 207 di->num_sessions = 1; 208 di->num_tracks = 1; 209 210 di->first_track = 1; 211 di->first_track_last_session = di->last_track_last_session = 1; 212 213 udf_dump_discinfo(ump); 214 return 0; 215 } 216 217 218 int 219 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 220 { 221 struct vnode *devvp = ump->devvp; 222 struct mmc_discinfo *di = &ump->discinfo; 223 int error, class; 224 225 DPRINTF(VOLUMES, ("read track info\n")); 226 227 class = di->mmc_class; 228 if (class != MMC_CLASS_DISC) { 229 /* tracknr specified in struct ti */ 230 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 231 return error; 232 } 233 234 /* disc partition support */ 235 if (ti->tracknr != 1) 236 return EIO; 237 238 /* create fake ti (TODO check for resized vnds) */ 239 ti->sessionnr = 1; 240 241 ti->track_mode = 0; /* XXX */ 242 ti->data_mode = 0; /* XXX */ 243 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 244 245 ti->track_start = 0; 246 ti->packet_size = 1; 247 248 /* TODO support for resizable vnd */ 249 ti->track_size = di->last_possible_lba; 250 ti->next_writable = di->last_possible_lba; 251 ti->last_recorded = ti->next_writable; 252 ti->free_blocks = 0; 253 254 return 0; 255 } 256 257 258 int 259 udf_setup_writeparams(struct udf_mount *ump) 260 { 261 struct mmc_writeparams mmc_writeparams; 262 int error; 263 264 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 265 return 0; 266 267 /* 268 * only CD burning normally needs setting up, but other disc types 269 * might need other settings to be made. The MMC framework will set up 270 * the nessisary recording parameters according to the disc 271 * characteristics read in. Modifications can be made in the discinfo 272 * structure passed to change the nature of the disc. 273 */ 274 275 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 276 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 277 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 278 279 /* 280 * UDF dictates first track to determine track mode for the whole 281 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 282 * To prevent problems with a `reserved' track in front we start with 283 * the 2nd track and if that is not valid, go for the 1st. 284 */ 285 mmc_writeparams.tracknr = 2; 286 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 287 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 288 289 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 290 FKIOCTL, NOCRED); 291 if (error) { 292 mmc_writeparams.tracknr = 1; 293 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 294 &mmc_writeparams, FKIOCTL, NOCRED); 295 } 296 return error; 297 } 298 299 300 int 301 udf_synchronise_caches(struct udf_mount *ump) 302 { 303 struct mmc_op mmc_op; 304 305 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 306 307 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 308 return 0; 309 310 /* discs are done now */ 311 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 312 return 0; 313 314 bzero(&mmc_op, sizeof(struct mmc_op)); 315 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 316 317 /* ignore return code */ 318 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 319 320 return 0; 321 } 322 323 /* --------------------------------------------------------------------- */ 324 325 /* track/session searching for mounting */ 326 int 327 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 328 int *first_tracknr, int *last_tracknr) 329 { 330 struct mmc_trackinfo trackinfo; 331 uint32_t tracknr, start_track, num_tracks; 332 int error; 333 334 /* if negative, sessionnr is relative to last session */ 335 if (args->sessionnr < 0) { 336 args->sessionnr += ump->discinfo.num_sessions; 337 } 338 339 /* sanity */ 340 if (args->sessionnr < 0) 341 args->sessionnr = 0; 342 if (args->sessionnr > ump->discinfo.num_sessions) 343 args->sessionnr = ump->discinfo.num_sessions; 344 345 /* search the tracks for this session, zero session nr indicates last */ 346 if (args->sessionnr == 0) 347 args->sessionnr = ump->discinfo.num_sessions; 348 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 349 args->sessionnr--; 350 351 /* sanity again */ 352 if (args->sessionnr < 0) 353 args->sessionnr = 0; 354 355 /* search the first and last track of the specified session */ 356 num_tracks = ump->discinfo.num_tracks; 357 start_track = ump->discinfo.first_track; 358 359 /* search for first track of this session */ 360 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 361 /* get track info */ 362 trackinfo.tracknr = tracknr; 363 error = udf_update_trackinfo(ump, &trackinfo); 364 if (error) 365 return error; 366 367 if (trackinfo.sessionnr == args->sessionnr) 368 break; 369 } 370 *first_tracknr = tracknr; 371 372 /* search for last track of this session */ 373 for (;tracknr <= num_tracks; tracknr++) { 374 /* get track info */ 375 trackinfo.tracknr = tracknr; 376 error = udf_update_trackinfo(ump, &trackinfo); 377 if (error || (trackinfo.sessionnr != args->sessionnr)) { 378 tracknr--; 379 break; 380 } 381 } 382 if (tracknr > num_tracks) 383 tracknr--; 384 385 *last_tracknr = tracknr; 386 387 if (*last_tracknr < *first_tracknr) { 388 printf( "udf_search_tracks: sanity check on drive+disc failed, " 389 "drive returned garbage\n"); 390 return EINVAL; 391 } 392 393 assert(*last_tracknr >= *first_tracknr); 394 return 0; 395 } 396 397 398 /* 399 * NOTE: this is the only routine in this file that directly peeks into the 400 * metadata file but since its at a larval state of the mount it can't hurt. 401 * 402 * XXX candidate for udf_allocation.c 403 * XXX clean me up!, change to new node reading code. 404 */ 405 406 static void 407 udf_check_track_metadata_overlap(struct udf_mount *ump, 408 struct mmc_trackinfo *trackinfo) 409 { 410 struct part_desc *part; 411 struct file_entry *fe; 412 struct extfile_entry *efe; 413 struct short_ad *s_ad; 414 struct long_ad *l_ad; 415 uint32_t track_start, track_end; 416 uint32_t phys_part_start, phys_part_end, part_start, part_end; 417 uint32_t sector_size, len, alloclen, plb_num; 418 uint8_t *pos; 419 int addr_type, icblen, icbflags, flags; 420 421 /* get our track extents */ 422 track_start = trackinfo->track_start; 423 track_end = track_start + trackinfo->track_size; 424 425 /* get our base partition extent */ 426 part = ump->partitions[ump->metadata_part]; 427 phys_part_start = udf_rw32(part->start_loc); 428 phys_part_end = phys_part_start + udf_rw32(part->part_len); 429 430 /* no use if its outside the physical partition */ 431 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 432 return; 433 434 /* 435 * now follow all extents in the fe/efe to see if they refer to this 436 * track 437 */ 438 439 sector_size = ump->discinfo.sector_size; 440 441 /* XXX should we claim exclusive access to the metafile ? */ 442 /* TODO: move to new node read code */ 443 fe = ump->metadata_node->fe; 444 efe = ump->metadata_node->efe; 445 if (fe) { 446 alloclen = udf_rw32(fe->l_ad); 447 pos = &fe->data[0] + udf_rw32(fe->l_ea); 448 icbflags = udf_rw16(fe->icbtag.flags); 449 } else { 450 assert(efe); 451 alloclen = udf_rw32(efe->l_ad); 452 pos = &efe->data[0] + udf_rw32(efe->l_ea); 453 icbflags = udf_rw16(efe->icbtag.flags); 454 } 455 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 456 457 while (alloclen) { 458 if (addr_type == UDF_ICB_SHORT_ALLOC) { 459 icblen = sizeof(struct short_ad); 460 s_ad = (struct short_ad *) pos; 461 len = udf_rw32(s_ad->len); 462 plb_num = udf_rw32(s_ad->lb_num); 463 } else { 464 /* should not be present, but why not */ 465 icblen = sizeof(struct long_ad); 466 l_ad = (struct long_ad *) pos; 467 len = udf_rw32(l_ad->len); 468 plb_num = udf_rw32(l_ad->loc.lb_num); 469 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 470 } 471 /* process extent */ 472 flags = UDF_EXT_FLAGS(len); 473 len = UDF_EXT_LEN(len); 474 475 part_start = phys_part_start + plb_num; 476 part_end = part_start + (len / sector_size); 477 478 if ((part_start >= track_start) && (part_end <= track_end)) { 479 /* extent is enclosed within this track */ 480 ump->metadata_track = *trackinfo; 481 return; 482 } 483 484 pos += icblen; 485 alloclen -= icblen; 486 } 487 } 488 489 490 int 491 udf_search_writing_tracks(struct udf_mount *ump) 492 { 493 struct mmc_trackinfo trackinfo; 494 struct part_desc *part; 495 uint32_t tracknr, start_track, num_tracks; 496 uint32_t track_start, track_end, part_start, part_end; 497 int error; 498 499 /* 500 * in the CD/(HD)DVD/BD recordable device model a few tracks within 501 * the last session might be open but in the UDF device model at most 502 * three tracks can be open: a reserved track for delayed ISO VRS 503 * writing, a data track and a metadata track. We search here for the 504 * data track and the metadata track. Note that the reserved track is 505 * troublesome but can be detected by its small size of < 512 sectors. 506 */ 507 508 num_tracks = ump->discinfo.num_tracks; 509 start_track = ump->discinfo.first_track; 510 511 /* fetch info on first and possibly only track */ 512 trackinfo.tracknr = start_track; 513 error = udf_update_trackinfo(ump, &trackinfo); 514 if (error) 515 return error; 516 517 /* copy results to our mount point */ 518 ump->data_track = trackinfo; 519 ump->metadata_track = trackinfo; 520 521 /* if not sequential, we're done */ 522 if (num_tracks == 1) 523 return 0; 524 525 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 526 /* get track info */ 527 trackinfo.tracknr = tracknr; 528 error = udf_update_trackinfo(ump, &trackinfo); 529 if (error) 530 return error; 531 532 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 533 continue; 534 535 track_start = trackinfo.track_start; 536 track_end = track_start + trackinfo.track_size; 537 538 /* check for overlap on data partition */ 539 part = ump->partitions[ump->data_part]; 540 part_start = udf_rw32(part->start_loc); 541 part_end = part_start + udf_rw32(part->part_len); 542 if ((part_start < track_end) && (part_end > track_start)) { 543 ump->data_track = trackinfo; 544 /* TODO check if UDF partition data_part is writable */ 545 } 546 547 /* check for overlap on metadata partition */ 548 if ((ump->meta_alloc == UDF_ALLOC_METASEQUENTIAL) || 549 (ump->meta_alloc == UDF_ALLOC_METABITMAP)) { 550 udf_check_track_metadata_overlap(ump, &trackinfo); 551 } else { 552 ump->metadata_track = trackinfo; 553 } 554 } 555 556 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 557 return EROFS; 558 559 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 560 return EROFS; 561 562 return 0; 563 } 564 565 /* --------------------------------------------------------------------- */ 566 567 /* 568 * Check if the blob starts with a good UDF tag. Tags are protected by a 569 * checksum over the reader except one byte at position 4 that is the checksum 570 * itself. 571 */ 572 573 int 574 udf_check_tag(void *blob) 575 { 576 struct desc_tag *tag = blob; 577 uint8_t *pos, sum, cnt; 578 579 /* check TAG header checksum */ 580 pos = (uint8_t *) tag; 581 sum = 0; 582 583 for(cnt = 0; cnt < 16; cnt++) { 584 if (cnt != 4) 585 sum += *pos; 586 pos++; 587 } 588 if (sum != tag->cksum) { 589 /* bad tag header checksum; this is not a valid tag */ 590 return EINVAL; 591 } 592 593 return 0; 594 } 595 596 597 /* 598 * check tag payload will check descriptor CRC as specified. 599 * If the descriptor is too long, it will return EIO otherwise EINVAL. 600 */ 601 602 int 603 udf_check_tag_payload(void *blob, uint32_t max_length) 604 { 605 struct desc_tag *tag = blob; 606 uint16_t crc, crc_len; 607 608 crc_len = udf_rw16(tag->desc_crc_len); 609 610 /* check payload CRC if applicable */ 611 if (crc_len == 0) 612 return 0; 613 614 if (crc_len > max_length) 615 return EIO; 616 617 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 618 if (crc != udf_rw16(tag->desc_crc)) { 619 /* bad payload CRC; this is a broken tag */ 620 return EINVAL; 621 } 622 623 return 0; 624 } 625 626 627 void 628 udf_validate_tag_sum(void *blob) 629 { 630 struct desc_tag *tag = blob; 631 uint8_t *pos, sum, cnt; 632 633 /* calculate TAG header checksum */ 634 pos = (uint8_t *) tag; 635 sum = 0; 636 637 for(cnt = 0; cnt < 16; cnt++) { 638 if (cnt != 4) sum += *pos; 639 pos++; 640 } 641 tag->cksum = sum; /* 8 bit */ 642 } 643 644 645 /* assumes sector number of descriptor to be saved already present */ 646 void 647 udf_validate_tag_and_crc_sums(void *blob) 648 { 649 struct desc_tag *tag = blob; 650 uint8_t *btag = (uint8_t *) tag; 651 uint16_t crc, crc_len; 652 653 crc_len = udf_rw16(tag->desc_crc_len); 654 655 /* check payload CRC if applicable */ 656 if (crc_len > 0) { 657 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 658 tag->desc_crc = udf_rw16(crc); 659 } 660 661 /* calculate TAG header checksum */ 662 udf_validate_tag_sum(blob); 663 } 664 665 /* --------------------------------------------------------------------- */ 666 667 /* 668 * XXX note the different semantics from udfclient: for FIDs it still rounds 669 * up to sectors. Use udf_fidsize() for a correct length. 670 */ 671 672 int 673 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 674 { 675 uint32_t size, tag_id, num_lb, elmsz; 676 677 tag_id = udf_rw16(dscr->tag.id); 678 679 switch (tag_id) { 680 case TAGID_LOGVOL : 681 size = sizeof(struct logvol_desc) - 1; 682 size += udf_rw32(dscr->lvd.mt_l); 683 break; 684 case TAGID_UNALLOC_SPACE : 685 elmsz = sizeof(struct extent_ad); 686 size = sizeof(struct unalloc_sp_desc) - elmsz; 687 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 688 break; 689 case TAGID_FID : 690 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 691 size = (size + 3) & ~3; 692 break; 693 case TAGID_LOGVOL_INTEGRITY : 694 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 695 size += udf_rw32(dscr->lvid.l_iu); 696 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 697 break; 698 case TAGID_SPACE_BITMAP : 699 size = sizeof(struct space_bitmap_desc) - 1; 700 size += udf_rw32(dscr->sbd.num_bytes); 701 break; 702 case TAGID_SPARING_TABLE : 703 elmsz = sizeof(struct spare_map_entry); 704 size = sizeof(struct udf_sparing_table) - elmsz; 705 size += udf_rw16(dscr->spt.rt_l) * elmsz; 706 break; 707 case TAGID_FENTRY : 708 size = sizeof(struct file_entry); 709 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 710 break; 711 case TAGID_EXTFENTRY : 712 size = sizeof(struct extfile_entry); 713 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 714 break; 715 case TAGID_FSD : 716 size = sizeof(struct fileset_desc); 717 break; 718 default : 719 size = sizeof(union dscrptr); 720 break; 721 } 722 723 if ((size == 0) || (lb_size == 0)) return 0; 724 725 /* round up in sectors */ 726 num_lb = (size + lb_size -1) / lb_size; 727 return num_lb * lb_size; 728 } 729 730 731 int 732 udf_fidsize(struct fileid_desc *fid) 733 { 734 uint32_t size; 735 736 if (udf_rw16(fid->tag.id) != TAGID_FID) 737 panic("got udf_fidsize on non FID\n"); 738 739 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 740 size = (size + 3) & ~3; 741 742 return size; 743 } 744 745 /* --------------------------------------------------------------------- */ 746 747 void 748 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 749 { 750 int ret; 751 752 mutex_enter(&udf_node->node_mutex); 753 /* wait until free */ 754 while (udf_node->i_flags & IN_LOCKED) { 755 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 756 /* TODO check if we should return error; abort */ 757 if (ret == EWOULDBLOCK) { 758 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 759 "wanted at %s:%d, previously locked at %s:%d\n", 760 udf_node, fname, lineno, 761 udf_node->lock_fname, udf_node->lock_lineno)); 762 } 763 } 764 /* grab */ 765 udf_node->i_flags |= IN_LOCKED | flag; 766 /* debug */ 767 udf_node->lock_fname = fname; 768 udf_node->lock_lineno = lineno; 769 770 mutex_exit(&udf_node->node_mutex); 771 } 772 773 774 void 775 udf_unlock_node(struct udf_node *udf_node, int flag) 776 { 777 mutex_enter(&udf_node->node_mutex); 778 udf_node->i_flags &= ~(IN_LOCKED | flag); 779 cv_broadcast(&udf_node->node_lock); 780 mutex_exit(&udf_node->node_mutex); 781 } 782 783 784 /* --------------------------------------------------------------------- */ 785 786 static int 787 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 788 { 789 int error; 790 791 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 792 (union dscrptr **) dst); 793 if (!error) { 794 /* blank terminator blocks are not allowed here */ 795 if (*dst == NULL) 796 return ENOENT; 797 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 798 error = ENOENT; 799 free(*dst, M_UDFVOLD); 800 *dst = NULL; 801 DPRINTF(VOLUMES, ("Not an anchor\n")); 802 } 803 } 804 805 return error; 806 } 807 808 809 int 810 udf_read_anchors(struct udf_mount *ump) 811 { 812 struct udf_args *args = &ump->mount_args; 813 struct mmc_trackinfo first_track; 814 struct mmc_trackinfo second_track; 815 struct mmc_trackinfo last_track; 816 struct anchor_vdp **anchorsp; 817 uint32_t track_start; 818 uint32_t track_end; 819 uint32_t positions[4]; 820 int first_tracknr, last_tracknr; 821 int error, anch, ok, first_anchor; 822 823 /* search the first and last track of the specified session */ 824 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 825 if (!error) { 826 first_track.tracknr = first_tracknr; 827 error = udf_update_trackinfo(ump, &first_track); 828 } 829 if (!error) { 830 last_track.tracknr = last_tracknr; 831 error = udf_update_trackinfo(ump, &last_track); 832 } 833 if ((!error) && (first_tracknr != last_tracknr)) { 834 second_track.tracknr = first_tracknr+1; 835 error = udf_update_trackinfo(ump, &second_track); 836 } 837 if (error) { 838 printf("UDF mount: reading disc geometry failed\n"); 839 return 0; 840 } 841 842 track_start = first_track.track_start; 843 844 /* `end' is not as straitforward as start. */ 845 track_end = last_track.track_start 846 + last_track.track_size - last_track.free_blocks - 1; 847 848 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 849 /* end of track is not straitforward here */ 850 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 851 track_end = last_track.last_recorded; 852 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 853 track_end = last_track.next_writable 854 - ump->discinfo.link_block_penalty; 855 } 856 857 /* its no use reading a blank track */ 858 first_anchor = 0; 859 if (first_track.flags & MMC_TRACKINFO_BLANK) 860 first_anchor = 1; 861 862 /* get our packet size */ 863 ump->packet_size = first_track.packet_size; 864 if (first_track.flags & MMC_TRACKINFO_BLANK) 865 ump->packet_size = second_track.packet_size; 866 867 if (ump->packet_size <= 1) { 868 /* take max, but not bigger than 64 */ 869 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 870 ump->packet_size = MIN(ump->packet_size, 64); 871 } 872 KASSERT(ump->packet_size >= 1); 873 874 /* read anchors start+256, start+512, end-256, end */ 875 positions[0] = track_start+256; 876 positions[1] = track_end-256; 877 positions[2] = track_end; 878 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 879 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 880 881 ok = 0; 882 anchorsp = ump->anchors; 883 for (anch = first_anchor; anch < 4; anch++) { 884 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 885 positions[anch])); 886 error = udf_read_anchor(ump, positions[anch], anchorsp); 887 if (!error) { 888 anchorsp++; 889 ok++; 890 } 891 } 892 893 /* VATs are only recorded on sequential media, but initialise */ 894 ump->first_possible_vat_location = track_start + 2; 895 ump->last_possible_vat_location = track_end + last_track.packet_size; 896 897 return ok; 898 } 899 900 /* --------------------------------------------------------------------- */ 901 902 /* we dont try to be smart; we just record the parts */ 903 #define UDF_UPDATE_DSCR(name, dscr) \ 904 if (name) \ 905 free(name, M_UDFVOLD); \ 906 name = dscr; 907 908 static int 909 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 910 { 911 struct part_desc *part; 912 uint16_t phys_part, raw_phys_part; 913 914 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 915 udf_rw16(dscr->tag.id))); 916 switch (udf_rw16(dscr->tag.id)) { 917 case TAGID_PRI_VOL : /* primary partition */ 918 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 919 break; 920 case TAGID_LOGVOL : /* logical volume */ 921 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 922 break; 923 case TAGID_UNALLOC_SPACE : /* unallocated space */ 924 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 925 break; 926 case TAGID_IMP_VOL : /* implementation */ 927 /* XXX do we care about multiple impl. descr ? */ 928 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 929 break; 930 case TAGID_PARTITION : /* physical partition */ 931 /* not much use if its not allocated */ 932 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 933 free(dscr, M_UDFVOLD); 934 break; 935 } 936 937 /* 938 * BUGALERT: some rogue implementations use random physical 939 * partion numbers to break other implementations so lookup 940 * the number. 941 */ 942 raw_phys_part = udf_rw16(dscr->pd.part_num); 943 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 944 part = ump->partitions[phys_part]; 945 if (part == NULL) 946 break; 947 if (udf_rw16(part->part_num) == raw_phys_part) 948 break; 949 } 950 if (phys_part == UDF_PARTITIONS) { 951 free(dscr, M_UDFVOLD); 952 return EINVAL; 953 } 954 955 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 956 break; 957 case TAGID_VOL : /* volume space extender; rare */ 958 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 959 free(dscr, M_UDFVOLD); 960 break; 961 default : 962 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 963 udf_rw16(dscr->tag.id))); 964 free(dscr, M_UDFVOLD); 965 } 966 967 return 0; 968 } 969 #undef UDF_UPDATE_DSCR 970 971 /* --------------------------------------------------------------------- */ 972 973 static int 974 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 975 { 976 union dscrptr *dscr; 977 uint32_t sector_size, dscr_size; 978 int error; 979 980 sector_size = ump->discinfo.sector_size; 981 982 /* loc is sectornr, len is in bytes */ 983 error = EIO; 984 while (len) { 985 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 986 if (error) 987 return error; 988 989 /* blank block is a terminator */ 990 if (dscr == NULL) 991 return 0; 992 993 /* TERM descriptor is a terminator */ 994 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 995 free(dscr, M_UDFVOLD); 996 return 0; 997 } 998 999 /* process all others */ 1000 dscr_size = udf_tagsize(dscr, sector_size); 1001 error = udf_process_vds_descriptor(ump, dscr); 1002 if (error) { 1003 free(dscr, M_UDFVOLD); 1004 break; 1005 } 1006 assert((dscr_size % sector_size) == 0); 1007 1008 len -= dscr_size; 1009 loc += dscr_size / sector_size; 1010 } 1011 1012 return error; 1013 } 1014 1015 1016 int 1017 udf_read_vds_space(struct udf_mount *ump) 1018 { 1019 /* struct udf_args *args = &ump->mount_args; */ 1020 struct anchor_vdp *anchor, *anchor2; 1021 size_t size; 1022 uint32_t main_loc, main_len; 1023 uint32_t reserve_loc, reserve_len; 1024 int error; 1025 1026 /* 1027 * read in VDS space provided by the anchors; if one descriptor read 1028 * fails, try the mirror sector. 1029 * 1030 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1031 * avoids the `compatibility features' of DirectCD that may confuse 1032 * stuff completely. 1033 */ 1034 1035 anchor = ump->anchors[0]; 1036 anchor2 = ump->anchors[1]; 1037 assert(anchor); 1038 1039 if (anchor2) { 1040 size = sizeof(struct extent_ad); 1041 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1042 anchor = anchor2; 1043 /* reserve is specified to be a literal copy of main */ 1044 } 1045 1046 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1047 main_len = udf_rw32(anchor->main_vds_ex.len); 1048 1049 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1050 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1051 1052 error = udf_read_vds_extent(ump, main_loc, main_len); 1053 if (error) { 1054 printf("UDF mount: reading in reserve VDS extent\n"); 1055 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1056 } 1057 1058 return error; 1059 } 1060 1061 /* --------------------------------------------------------------------- */ 1062 1063 /* 1064 * Read in the logical volume integrity sequence pointed to by our logical 1065 * volume descriptor. Its a sequence that can be extended using fields in the 1066 * integrity descriptor itself. On sequential media only one is found, on 1067 * rewritable media a sequence of descriptors can be found as a form of 1068 * history keeping and on non sequential write-once media the chain is vital 1069 * to allow more and more descriptors to be written. The last descriptor 1070 * written in an extent needs to claim space for a new extent. 1071 */ 1072 1073 static int 1074 udf_retrieve_lvint(struct udf_mount *ump) 1075 { 1076 union dscrptr *dscr; 1077 struct logvol_int_desc *lvint; 1078 struct udf_lvintq *trace; 1079 uint32_t lb_size, lbnum, len; 1080 int dscr_type, error, trace_len; 1081 1082 lb_size = udf_rw32(ump->logical_vol->lb_size); 1083 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1084 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1085 1086 /* clean trace */ 1087 memset(ump->lvint_trace, 0, 1088 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1089 1090 trace_len = 0; 1091 trace = ump->lvint_trace; 1092 trace->start = lbnum; 1093 trace->end = lbnum + len/lb_size; 1094 trace->pos = 0; 1095 trace->wpos = 0; 1096 1097 lvint = NULL; 1098 dscr = NULL; 1099 error = 0; 1100 while (len) { 1101 trace->pos = lbnum - trace->start; 1102 trace->wpos = trace->pos + 1; 1103 1104 /* read in our integrity descriptor */ 1105 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1106 if (!error) { 1107 if (dscr == NULL) { 1108 trace->wpos = trace->pos; 1109 break; /* empty terminates */ 1110 } 1111 dscr_type = udf_rw16(dscr->tag.id); 1112 if (dscr_type == TAGID_TERM) { 1113 trace->wpos = trace->pos; 1114 break; /* clean terminator */ 1115 } 1116 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1117 /* fatal... corrupt disc */ 1118 error = ENOENT; 1119 break; 1120 } 1121 if (lvint) 1122 free(lvint, M_UDFVOLD); 1123 lvint = &dscr->lvid; 1124 dscr = NULL; 1125 } /* else hope for the best... maybe the next is ok */ 1126 1127 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1128 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1129 1130 /* proceed sequential */ 1131 lbnum += 1; 1132 len -= lb_size; 1133 1134 /* are we linking to a new piece? */ 1135 if (dscr && lvint->next_extent.len) { 1136 len = udf_rw32(lvint->next_extent.len); 1137 lbnum = udf_rw32(lvint->next_extent.loc); 1138 1139 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1140 /* IEK! segment link full... */ 1141 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1142 error = EINVAL; 1143 } else { 1144 trace++; 1145 trace_len++; 1146 1147 trace->start = lbnum; 1148 trace->end = lbnum + len/lb_size; 1149 trace->pos = 0; 1150 trace->wpos = 0; 1151 } 1152 } 1153 } 1154 1155 /* clean up the mess, esp. when there is an error */ 1156 if (dscr) 1157 free(dscr, M_UDFVOLD); 1158 1159 if (error && lvint) { 1160 free(lvint, M_UDFVOLD); 1161 lvint = NULL; 1162 } 1163 1164 if (!lvint) 1165 error = ENOENT; 1166 1167 ump->logvol_integrity = lvint; 1168 return error; 1169 } 1170 1171 1172 static int 1173 udf_loose_lvint_history(struct udf_mount *ump) 1174 { 1175 union dscrptr **bufs, *dscr, *last_dscr; 1176 struct udf_lvintq *trace, *in_trace, *out_trace; 1177 struct logvol_int_desc *lvint; 1178 uint32_t in_ext, in_pos, in_len; 1179 uint32_t out_ext, out_wpos, out_len; 1180 uint32_t lb_size, packet_size, lb_num; 1181 uint32_t len, start; 1182 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1183 int losing; 1184 int error; 1185 1186 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1187 1188 lb_size = udf_rw32(ump->logical_vol->lb_size); 1189 packet_size = ump->data_track.packet_size; /* XXX data track */ 1190 1191 /* search smallest extent */ 1192 trace = &ump->lvint_trace[0]; 1193 minext = trace->end - trace->start; 1194 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1195 trace = &ump->lvint_trace[ext]; 1196 extlen = trace->end - trace->start; 1197 if (extlen == 0) 1198 break; 1199 minext = MIN(minext, extlen); 1200 } 1201 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1202 /* no sense wiping all */ 1203 if (losing == minext) 1204 losing--; 1205 1206 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1207 1208 /* get buffer for pieces */ 1209 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1210 1211 in_ext = 0; 1212 in_pos = losing; 1213 in_trace = &ump->lvint_trace[in_ext]; 1214 in_len = in_trace->end - in_trace->start; 1215 out_ext = 0; 1216 out_wpos = 0; 1217 out_trace = &ump->lvint_trace[out_ext]; 1218 out_len = out_trace->end - out_trace->start; 1219 1220 last_dscr = NULL; 1221 for(;;) { 1222 out_trace->pos = out_wpos; 1223 out_trace->wpos = out_trace->pos; 1224 if (in_pos >= in_len) { 1225 in_ext++; 1226 in_pos = 0; 1227 in_trace = &ump->lvint_trace[in_ext]; 1228 in_len = in_trace->end - in_trace->start; 1229 } 1230 if (out_wpos >= out_len) { 1231 out_ext++; 1232 out_wpos = 0; 1233 out_trace = &ump->lvint_trace[out_ext]; 1234 out_len = out_trace->end - out_trace->start; 1235 } 1236 /* copy overlap contents */ 1237 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1238 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1239 if (cpy_len == 0) 1240 break; 1241 1242 /* copy */ 1243 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1244 for (cnt = 0; cnt < cpy_len; cnt++) { 1245 /* read in our integrity descriptor */ 1246 lb_num = in_trace->start + in_pos + cnt; 1247 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1248 &dscr); 1249 if (error) { 1250 /* copy last one */ 1251 dscr = last_dscr; 1252 } 1253 bufs[cnt] = dscr; 1254 if (!error) { 1255 if (dscr == NULL) { 1256 out_trace->pos = out_wpos + cnt; 1257 out_trace->wpos = out_trace->pos; 1258 break; /* empty terminates */ 1259 } 1260 dscr_type = udf_rw16(dscr->tag.id); 1261 if (dscr_type == TAGID_TERM) { 1262 out_trace->pos = out_wpos + cnt; 1263 out_trace->wpos = out_trace->pos; 1264 break; /* clean terminator */ 1265 } 1266 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1267 panic( "UDF integrity sequence " 1268 "corrupted while mounted!\n"); 1269 } 1270 last_dscr = dscr; 1271 } 1272 } 1273 1274 /* patch up if first entry was on error */ 1275 if (bufs[0] == NULL) { 1276 for (cnt = 0; cnt < cpy_len; cnt++) 1277 if (bufs[cnt] != NULL) 1278 break; 1279 last_dscr = bufs[cnt]; 1280 for (; cnt > 0; cnt--) { 1281 bufs[cnt] = last_dscr; 1282 } 1283 } 1284 1285 /* glue + write out */ 1286 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1287 for (cnt = 0; cnt < cpy_len; cnt++) { 1288 lb_num = out_trace->start + out_wpos + cnt; 1289 lvint = &bufs[cnt]->lvid; 1290 1291 /* set continuation */ 1292 len = 0; 1293 start = 0; 1294 if (out_wpos + cnt == out_len) { 1295 /* get continuation */ 1296 trace = &ump->lvint_trace[out_ext+1]; 1297 len = trace->end - trace->start; 1298 start = trace->start; 1299 } 1300 lvint->next_extent.len = udf_rw32(len); 1301 lvint->next_extent.loc = udf_rw32(start); 1302 1303 lb_num = trace->start + trace->wpos; 1304 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1305 bufs[cnt], lb_num, lb_num); 1306 DPRINTFIF(VOLUMES, error, 1307 ("error writing lvint lb_num\n")); 1308 } 1309 1310 /* free non repeating descriptors */ 1311 last_dscr = NULL; 1312 for (cnt = 0; cnt < cpy_len; cnt++) { 1313 if (bufs[cnt] != last_dscr) 1314 free(bufs[cnt], M_UDFVOLD); 1315 last_dscr = bufs[cnt]; 1316 } 1317 1318 /* advance */ 1319 in_pos += cpy_len; 1320 out_wpos += cpy_len; 1321 } 1322 1323 free(bufs, M_TEMP); 1324 1325 return 0; 1326 } 1327 1328 1329 static int 1330 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1331 { 1332 struct udf_lvintq *trace; 1333 struct timeval now_v; 1334 struct timespec now_s; 1335 uint32_t sector; 1336 int logvol_integrity; 1337 int space, error; 1338 1339 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1340 1341 again: 1342 /* get free space in last chunk */ 1343 trace = ump->lvint_trace; 1344 while (trace->wpos > (trace->end - trace->start)) { 1345 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1346 "wpos = %d\n", trace->start, trace->end, 1347 trace->pos, trace->wpos)); 1348 trace++; 1349 } 1350 1351 /* check if there is space to append */ 1352 space = (trace->end - trace->start) - trace->wpos; 1353 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1354 "space = %d\n", trace->start, trace->end, trace->pos, 1355 trace->wpos, space)); 1356 1357 /* get state */ 1358 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1359 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1360 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1361 /* don't allow this logvol to be opened */ 1362 /* TODO extent LVINT space if possible */ 1363 return EROFS; 1364 } 1365 } 1366 1367 if (space < 1) { 1368 if (lvflag & UDF_APPENDONLY_LVINT) 1369 return EROFS; 1370 /* loose history by re-writing extents */ 1371 error = udf_loose_lvint_history(ump); 1372 if (error) 1373 return error; 1374 goto again; 1375 } 1376 1377 /* update our integrity descriptor to identify us and timestamp it */ 1378 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1379 microtime(&now_v); 1380 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1381 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1382 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1383 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1384 1385 /* writeout integrity descriptor */ 1386 sector = trace->start + trace->wpos; 1387 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1388 (union dscrptr *) ump->logvol_integrity, 1389 sector, sector); 1390 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1391 if (error) 1392 return error; 1393 1394 /* advance write position */ 1395 trace->wpos++; space--; 1396 if (space >= 1) { 1397 /* append terminator */ 1398 sector = trace->start + trace->wpos; 1399 error = udf_write_terminator(ump, sector); 1400 1401 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1402 } 1403 1404 space = (trace->end - trace->start) - trace->wpos; 1405 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1406 "space = %d\n", trace->start, trace->end, trace->pos, 1407 trace->wpos, space)); 1408 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1409 "successfull\n")); 1410 1411 return error; 1412 } 1413 1414 /* --------------------------------------------------------------------- */ 1415 1416 static int 1417 udf_read_partition_spacetables(struct udf_mount *ump) 1418 { 1419 union dscrptr *dscr; 1420 /* struct udf_args *args = &ump->mount_args; */ 1421 struct part_desc *partd; 1422 struct part_hdr_desc *parthdr; 1423 struct udf_bitmap *bitmap; 1424 uint32_t phys_part; 1425 uint32_t lb_num, len; 1426 int error, dscr_type; 1427 1428 /* unallocated space map */ 1429 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1430 partd = ump->partitions[phys_part]; 1431 if (partd == NULL) 1432 continue; 1433 parthdr = &partd->_impl_use.part_hdr; 1434 1435 lb_num = udf_rw32(partd->start_loc); 1436 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1437 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1438 if (len == 0) 1439 continue; 1440 1441 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1442 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1443 if (!error && dscr) { 1444 /* analyse */ 1445 dscr_type = udf_rw16(dscr->tag.id); 1446 if (dscr_type == TAGID_SPACE_BITMAP) { 1447 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1448 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1449 1450 /* fill in ump->part_unalloc_bits */ 1451 bitmap = &ump->part_unalloc_bits[phys_part]; 1452 bitmap->blob = (uint8_t *) dscr; 1453 bitmap->bits = dscr->sbd.data; 1454 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1455 bitmap->pages = NULL; /* TODO */ 1456 bitmap->data_pos = 0; 1457 bitmap->metadata_pos = 0; 1458 } else { 1459 free(dscr, M_UDFVOLD); 1460 1461 printf( "UDF mount: error reading unallocated " 1462 "space bitmap\n"); 1463 return EROFS; 1464 } 1465 } else { 1466 /* blank not allowed */ 1467 printf("UDF mount: blank unallocated space bitmap\n"); 1468 return EROFS; 1469 } 1470 } 1471 1472 /* unallocated space table (not supported) */ 1473 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1474 partd = ump->partitions[phys_part]; 1475 if (partd == NULL) 1476 continue; 1477 parthdr = &partd->_impl_use.part_hdr; 1478 1479 len = udf_rw32(parthdr->unalloc_space_table.len); 1480 if (len) { 1481 printf("UDF mount: space tables not supported\n"); 1482 return EROFS; 1483 } 1484 } 1485 1486 /* freed space map */ 1487 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1488 partd = ump->partitions[phys_part]; 1489 if (partd == NULL) 1490 continue; 1491 parthdr = &partd->_impl_use.part_hdr; 1492 1493 /* freed space map */ 1494 lb_num = udf_rw32(partd->start_loc); 1495 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1496 len = udf_rw32(parthdr->freed_space_bitmap.len); 1497 if (len == 0) 1498 continue; 1499 1500 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1501 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1502 if (!error && dscr) { 1503 /* analyse */ 1504 dscr_type = udf_rw16(dscr->tag.id); 1505 if (dscr_type == TAGID_SPACE_BITMAP) { 1506 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1507 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1508 1509 /* fill in ump->part_freed_bits */ 1510 bitmap = &ump->part_unalloc_bits[phys_part]; 1511 bitmap->blob = (uint8_t *) dscr; 1512 bitmap->bits = dscr->sbd.data; 1513 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1514 bitmap->pages = NULL; /* TODO */ 1515 bitmap->data_pos = 0; 1516 bitmap->metadata_pos = 0; 1517 } else { 1518 free(dscr, M_UDFVOLD); 1519 1520 printf( "UDF mount: error reading freed " 1521 "space bitmap\n"); 1522 return EROFS; 1523 } 1524 } else { 1525 /* blank not allowed */ 1526 printf("UDF mount: blank freed space bitmap\n"); 1527 return EROFS; 1528 } 1529 } 1530 1531 /* freed space table (not supported) */ 1532 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1533 partd = ump->partitions[phys_part]; 1534 if (partd == NULL) 1535 continue; 1536 parthdr = &partd->_impl_use.part_hdr; 1537 1538 len = udf_rw32(parthdr->freed_space_table.len); 1539 if (len) { 1540 printf("UDF mount: space tables not supported\n"); 1541 return EROFS; 1542 } 1543 } 1544 1545 return 0; 1546 } 1547 1548 1549 /* TODO implement async writeout */ 1550 int 1551 udf_write_partition_spacetables(struct udf_mount *ump, int waitfor) 1552 { 1553 union dscrptr *dscr; 1554 /* struct udf_args *args = &ump->mount_args; */ 1555 struct part_desc *partd; 1556 struct part_hdr_desc *parthdr; 1557 uint32_t phys_part; 1558 uint32_t lb_num, len, ptov; 1559 int error_all, error; 1560 1561 error_all = 0; 1562 /* unallocated space map */ 1563 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1564 partd = ump->partitions[phys_part]; 1565 if (partd == NULL) 1566 continue; 1567 parthdr = &partd->_impl_use.part_hdr; 1568 1569 ptov = udf_rw32(partd->start_loc); 1570 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1571 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1572 if (len == 0) 1573 continue; 1574 1575 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1576 lb_num + ptov)); 1577 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1578 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1579 (union dscrptr *) dscr, 1580 ptov + lb_num, lb_num); 1581 if (error) { 1582 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1583 error_all = error; 1584 } 1585 } 1586 1587 /* freed space map */ 1588 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1589 partd = ump->partitions[phys_part]; 1590 if (partd == NULL) 1591 continue; 1592 parthdr = &partd->_impl_use.part_hdr; 1593 1594 /* freed space map */ 1595 ptov = udf_rw32(partd->start_loc); 1596 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1597 len = udf_rw32(parthdr->freed_space_bitmap.len); 1598 if (len == 0) 1599 continue; 1600 1601 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1602 lb_num + ptov)); 1603 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1604 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1605 (union dscrptr *) dscr, 1606 ptov + lb_num, lb_num); 1607 if (error) { 1608 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1609 error_all = error; 1610 } 1611 } 1612 1613 return error_all; 1614 } 1615 1616 /* 1617 * Checks if ump's vds information is correct and complete 1618 */ 1619 1620 int 1621 udf_process_vds(struct udf_mount *ump) { 1622 union udf_pmap *mapping; 1623 /* struct udf_args *args = &ump->mount_args; */ 1624 struct logvol_int_desc *lvint; 1625 struct udf_logvol_info *lvinfo; 1626 struct part_desc *part; 1627 uint32_t n_pm, mt_l; 1628 uint8_t *pmap_pos; 1629 char *domain_name, *map_name; 1630 const char *check_name; 1631 char bits[128]; 1632 int pmap_stype, pmap_size; 1633 int pmap_type, log_part, phys_part, raw_phys_part; 1634 int n_phys, n_virt, n_spar, n_meta; 1635 int len, error; 1636 1637 if (ump == NULL) 1638 return ENOENT; 1639 1640 /* we need at least an anchor (trivial, but for safety) */ 1641 if (ump->anchors[0] == NULL) 1642 return EINVAL; 1643 1644 /* we need at least one primary and one logical volume descriptor */ 1645 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1646 return EINVAL; 1647 1648 /* we need at least one partition descriptor */ 1649 if (ump->partitions[0] == NULL) 1650 return EINVAL; 1651 1652 /* check logical volume sector size verses device sector size */ 1653 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1654 printf("UDF mount: format violation, lb_size != sector size\n"); 1655 return EINVAL; 1656 } 1657 1658 /* check domain name */ 1659 domain_name = ump->logical_vol->domain_id.id; 1660 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1661 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1662 return EINVAL; 1663 } 1664 1665 /* retrieve logical volume integrity sequence */ 1666 error = udf_retrieve_lvint(ump); 1667 1668 /* 1669 * We need at least one logvol integrity descriptor recorded. Note 1670 * that its OK to have an open logical volume integrity here. The VAT 1671 * will close/update the integrity. 1672 */ 1673 if (ump->logvol_integrity == NULL) 1674 return EINVAL; 1675 1676 /* read in and check unallocated and free space info if writing */ 1677 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 1678 error = udf_read_partition_spacetables(ump); 1679 if (error) 1680 return error; 1681 } 1682 1683 /* process derived structures */ 1684 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1685 lvint = ump->logvol_integrity; 1686 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1687 ump->logvol_info = lvinfo; 1688 1689 /* TODO check udf versions? */ 1690 1691 /* 1692 * check logvol mappings: effective virt->log partmap translation 1693 * check and recording of the mapping results. Saves expensive 1694 * strncmp() in tight places. 1695 */ 1696 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1697 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1698 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1699 pmap_pos = ump->logical_vol->maps; 1700 1701 if (n_pm > UDF_PMAPS) { 1702 printf("UDF mount: too many mappings\n"); 1703 return EINVAL; 1704 } 1705 1706 ump->data_part = ump->metadata_part = 0; 1707 n_phys = n_virt = n_spar = n_meta = 0; 1708 for (log_part = 0; log_part < n_pm; log_part++) { 1709 mapping = (union udf_pmap *) pmap_pos; 1710 pmap_stype = pmap_pos[0]; 1711 pmap_size = pmap_pos[1]; 1712 switch (pmap_stype) { 1713 case 1: /* physical mapping */ 1714 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1715 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1716 pmap_type = UDF_VTOP_TYPE_PHYS; 1717 n_phys++; 1718 ump->data_part = log_part; 1719 ump->metadata_part = log_part; 1720 break; 1721 case 2: /* virtual/sparable/meta mapping */ 1722 map_name = mapping->pm2.part_id.id; 1723 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1724 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1725 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1726 len = UDF_REGID_ID_SIZE; 1727 1728 check_name = "*UDF Virtual Partition"; 1729 if (strncmp(map_name, check_name, len) == 0) { 1730 pmap_type = UDF_VTOP_TYPE_VIRT; 1731 n_virt++; 1732 ump->metadata_part = log_part; 1733 break; 1734 } 1735 check_name = "*UDF Sparable Partition"; 1736 if (strncmp(map_name, check_name, len) == 0) { 1737 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1738 n_spar++; 1739 ump->data_part = log_part; 1740 ump->metadata_part = log_part; 1741 break; 1742 } 1743 check_name = "*UDF Metadata Partition"; 1744 if (strncmp(map_name, check_name, len) == 0) { 1745 pmap_type = UDF_VTOP_TYPE_META; 1746 n_meta++; 1747 ump->metadata_part = log_part; 1748 break; 1749 } 1750 break; 1751 default: 1752 return EINVAL; 1753 } 1754 1755 /* 1756 * BUGALERT: some rogue implementations use random physical 1757 * partion numbers to break other implementations so lookup 1758 * the number. 1759 */ 1760 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1761 part = ump->partitions[phys_part]; 1762 if (part == NULL) 1763 continue; 1764 if (udf_rw16(part->part_num) == raw_phys_part) 1765 break; 1766 } 1767 1768 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1769 raw_phys_part, phys_part, pmap_type)); 1770 1771 if (phys_part == UDF_PARTITIONS) 1772 return EINVAL; 1773 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1774 return EINVAL; 1775 1776 ump->vtop [log_part] = phys_part; 1777 ump->vtop_tp[log_part] = pmap_type; 1778 1779 pmap_pos += pmap_size; 1780 } 1781 /* not winning the beauty contest */ 1782 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1783 1784 /* test some basic UDF assertions/requirements */ 1785 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1786 return EINVAL; 1787 1788 if (n_virt) { 1789 if ((n_phys == 0) || n_spar || n_meta) 1790 return EINVAL; 1791 } 1792 if (n_spar + n_phys == 0) 1793 return EINVAL; 1794 1795 /* determine allocation scheme's based on disc format */ 1796 /* VAT's can only be on a sequential media */ 1797 ump->data_alloc = UDF_ALLOC_SPACEMAP; 1798 if (n_virt) 1799 ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1800 1801 ump->meta_alloc = UDF_ALLOC_SPACEMAP; 1802 if (n_virt) 1803 ump->meta_alloc = UDF_ALLOC_VAT; 1804 if (n_meta) 1805 ump->meta_alloc = UDF_ALLOC_METABITMAP; 1806 1807 /* special cases for pseudo-overwrite */ 1808 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1809 ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1810 if (n_meta) { 1811 ump->meta_alloc = UDF_ALLOC_METASEQUENTIAL; 1812 } else { 1813 ump->meta_alloc = UDF_ALLOC_RELAXEDSEQUENTIAL; 1814 } 1815 } 1816 1817 /* determine logical volume open/closure actions */ 1818 if (n_virt) { 1819 ump->lvopen = 0; 1820 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1821 ump->lvopen |= UDF_OPEN_SESSION ; 1822 ump->lvclose = UDF_WRITE_VAT; 1823 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1824 ump->lvclose |= UDF_CLOSE_SESSION; 1825 } else { 1826 /* `normal' rewritable or non sequential media */ 1827 ump->lvopen = UDF_WRITE_LVINT; 1828 ump->lvclose = UDF_WRITE_LVINT; 1829 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1830 ump->lvopen |= UDF_APPENDONLY_LVINT; 1831 } 1832 1833 /* 1834 * Determine sheduler error behaviour. For virtual partions, update 1835 * the trackinfo; for sparable partitions replace a whole block on the 1836 * sparable table. Allways requeue. 1837 */ 1838 ump->lvreadwrite = 0; 1839 if (n_virt) 1840 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1841 if (n_spar) 1842 ump->lvreadwrite = UDF_REMAP_BLOCK; 1843 1844 /* 1845 * Select our sheduler 1846 */ 1847 ump->strategy = &udf_strat_rmw; 1848 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1849 ump->strategy = &udf_strat_sequential; 1850 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1851 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1852 ump->strategy = &udf_strat_direct; 1853 if (n_spar) 1854 ump->strategy = &udf_strat_rmw; 1855 1856 /* print results */ 1857 DPRINTF(VOLUMES, ("\tdata alloc scheme %d, meta alloc scheme %d\n", 1858 ump->data_alloc, ump->meta_alloc)); 1859 DPRINTF(VOLUMES, ("\tdata partition %d, metadata partition %d\n", 1860 ump->data_part, ump->metadata_part)); 1861 1862 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 1863 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 1864 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 1865 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 1866 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 1867 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 1868 1869 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 1870 (ump->strategy == &udf_strat_direct) ? "Direct" : 1871 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 1872 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 1873 1874 /* signal its OK for now */ 1875 return 0; 1876 } 1877 1878 /* --------------------------------------------------------------------- */ 1879 1880 /* 1881 * Update logical volume name in all structures that keep a record of it. We 1882 * use memmove since each of them might be specified as a source. 1883 * 1884 * Note that it doesn't update the VAT structure! 1885 */ 1886 1887 static void 1888 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 1889 { 1890 struct logvol_desc *lvd = NULL; 1891 struct fileset_desc *fsd = NULL; 1892 struct udf_lv_info *lvi = NULL; 1893 1894 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 1895 lvd = ump->logical_vol; 1896 fsd = ump->fileset_desc; 1897 if (ump->implementation) 1898 lvi = &ump->implementation->_impl_use.lv_info; 1899 1900 /* logvol's id might be specified as origional so use memmove here */ 1901 memmove(lvd->logvol_id, logvol_id, 128); 1902 if (fsd) 1903 memmove(fsd->logvol_id, logvol_id, 128); 1904 if (lvi) 1905 memmove(lvi->logvol_id, logvol_id, 128); 1906 } 1907 1908 /* --------------------------------------------------------------------- */ 1909 1910 /* 1911 * Etended attribute support. UDF knows of 3 places for extended attributes: 1912 * 1913 * (a) inside the file's (e)fe in the length of the extended attriubute area 1914 * before the allocation desctriptors/filedata 1915 * 1916 * (b) in a file referenced by (e)fe->ext_attr_icb and 1917 * 1918 * (c) in the e(fe)'s associated stream directory that can hold various 1919 struct part_desc *part; 1920 * sub-files. In the stream directory a few fixed named subfiles are reserved 1921 * for NT/Unix ACL's and OS/2 attributes. 1922 * 1923 * NOTE: Extended attributes are read randomly but allways written 1924 * *atomicaly*. For ACL's this interface is propably different but not known 1925 * to me yet. 1926 */ 1927 1928 static int 1929 udf_impl_extattr_check(struct impl_extattr_entry *implext) 1930 { 1931 uint16_t *spos; 1932 1933 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 1934 /* checksum valid? */ 1935 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 1936 spos = (uint16_t *) implext->data; 1937 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 1938 return EINVAL; 1939 } 1940 return 0; 1941 } 1942 1943 static void 1944 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 1945 { 1946 uint16_t *spos; 1947 1948 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 1949 /* set checksum */ 1950 spos = (uint16_t *) implext->data; 1951 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 1952 } 1953 } 1954 1955 1956 int 1957 udf_extattr_search_intern(struct udf_node *node, 1958 uint32_t sattr, char const *sattrname, 1959 uint32_t *offsetp, uint32_t *lengthp) 1960 { 1961 struct extattrhdr_desc *eahdr; 1962 struct extattr_entry *attrhdr; 1963 struct impl_extattr_entry *implext; 1964 uint32_t offset, a_l, sector_size; 1965 int32_t l_ea; 1966 uint8_t *pos; 1967 int error; 1968 1969 /* get mountpoint */ 1970 sector_size = node->ump->discinfo.sector_size; 1971 1972 /* get information from fe/efe */ 1973 if (node->fe) { 1974 l_ea = udf_rw32(node->fe->l_ea); 1975 eahdr = (struct extattrhdr_desc *) node->fe->data; 1976 } else { 1977 assert(node->efe); 1978 l_ea = udf_rw32(node->efe->l_ea); 1979 eahdr = (struct extattrhdr_desc *) node->efe->data; 1980 } 1981 1982 /* something recorded here? */ 1983 if (l_ea == 0) 1984 return ENOENT; 1985 1986 /* check extended attribute tag; what to do if it fails? */ 1987 error = udf_check_tag(eahdr); 1988 if (error) 1989 return EINVAL; 1990 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 1991 return EINVAL; 1992 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 1993 if (error) 1994 return EINVAL; 1995 1996 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 1997 1998 /* looking for Ecma-167 attributes? */ 1999 offset = sizeof(struct extattrhdr_desc); 2000 2001 /* looking for either implemenation use or application use */ 2002 if (sattr == 2048) { /* [4/48.10.8] */ 2003 offset = udf_rw32(eahdr->impl_attr_loc); 2004 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2005 return ENOENT; 2006 } 2007 if (sattr == 65536) { /* [4/48.10.9] */ 2008 offset = udf_rw32(eahdr->appl_attr_loc); 2009 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2010 return ENOENT; 2011 } 2012 2013 /* paranoia check offset and l_ea */ 2014 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2015 return EINVAL; 2016 2017 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2018 2019 /* find our extended attribute */ 2020 l_ea -= offset; 2021 pos = (uint8_t *) eahdr + offset; 2022 2023 while (l_ea >= sizeof(struct extattr_entry)) { 2024 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2025 attrhdr = (struct extattr_entry *) pos; 2026 implext = (struct impl_extattr_entry *) pos; 2027 2028 /* get complete attribute length and check for roque values */ 2029 a_l = udf_rw32(attrhdr->a_l); 2030 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2031 udf_rw32(attrhdr->type), 2032 attrhdr->subtype, a_l, l_ea)); 2033 if ((a_l == 0) || (a_l > l_ea)) 2034 return EINVAL; 2035 2036 if (attrhdr->type != sattr) 2037 goto next_attribute; 2038 2039 /* we might have found it! */ 2040 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2041 *offsetp = offset; 2042 *lengthp = a_l; 2043 return 0; /* success */ 2044 } 2045 2046 /* 2047 * Implementation use and application use extended attributes 2048 * have a name to identify. They share the same structure only 2049 * UDF implementation use extended attributes have a checksum 2050 * we need to check 2051 */ 2052 2053 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2054 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2055 /* we have found our appl/implementation attribute */ 2056 *offsetp = offset; 2057 *lengthp = a_l; 2058 return 0; /* success */ 2059 } 2060 2061 next_attribute: 2062 /* next attribute */ 2063 pos += a_l; 2064 l_ea -= a_l; 2065 offset += a_l; 2066 } 2067 /* not found */ 2068 return ENOENT; 2069 } 2070 2071 2072 2073 /* --------------------------------------------------------------------- */ 2074 2075 static int 2076 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2077 { 2078 struct udf_mount *ump; 2079 struct udf_logvol_info *lvinfo; 2080 struct impl_extattr_entry *implext; 2081 struct vatlvext_extattr_entry lvext; 2082 const char *extstr = "*UDF VAT LVExtension"; 2083 uint64_t vat_uniqueid; 2084 uint32_t offset, a_l; 2085 uint8_t *ea_start, *lvextpos; 2086 int error; 2087 2088 /* get mountpoint and lvinfo */ 2089 ump = vat_node->ump; 2090 lvinfo = ump->logvol_info; 2091 2092 /* get information from fe/efe */ 2093 if (vat_node->fe) { 2094 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2095 ea_start = vat_node->fe->data; 2096 } else { 2097 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2098 ea_start = vat_node->efe->data; 2099 } 2100 2101 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2102 if (error) 2103 return error; 2104 2105 implext = (struct impl_extattr_entry *) (ea_start + offset); 2106 error = udf_impl_extattr_check(implext); 2107 if (error) 2108 return error; 2109 2110 /* paranoia */ 2111 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2112 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2113 return EINVAL; 2114 } 2115 2116 /* 2117 * we have found our "VAT LVExtension attribute. BUT due to a 2118 * bug in the specification it might not be word aligned so 2119 * copy first to avoid panics on some machines (!!) 2120 */ 2121 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2122 lvextpos = implext->data + udf_rw32(implext->iu_l); 2123 memcpy(&lvext, lvextpos, sizeof(lvext)); 2124 2125 /* check if it was updated the last time */ 2126 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2127 lvinfo->num_files = lvext.num_files; 2128 lvinfo->num_directories = lvext.num_directories; 2129 udf_update_logvolname(ump, lvext.logvol_id); 2130 } else { 2131 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2132 /* replace VAT LVExt by free space EA */ 2133 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2134 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2135 udf_calc_impl_extattr_checksum(implext); 2136 } 2137 2138 return 0; 2139 } 2140 2141 2142 static int 2143 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2144 { 2145 struct udf_mount *ump; 2146 struct udf_logvol_info *lvinfo; 2147 struct impl_extattr_entry *implext; 2148 struct vatlvext_extattr_entry lvext; 2149 const char *extstr = "*UDF VAT LVExtension"; 2150 uint64_t vat_uniqueid; 2151 uint32_t offset, a_l; 2152 uint8_t *ea_start, *lvextpos; 2153 int error; 2154 2155 /* get mountpoint and lvinfo */ 2156 ump = vat_node->ump; 2157 lvinfo = ump->logvol_info; 2158 2159 /* get information from fe/efe */ 2160 if (vat_node->fe) { 2161 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2162 ea_start = vat_node->fe->data; 2163 } else { 2164 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2165 ea_start = vat_node->efe->data; 2166 } 2167 2168 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2169 if (error) 2170 return error; 2171 /* found, it existed */ 2172 2173 /* paranoia */ 2174 implext = (struct impl_extattr_entry *) (ea_start + offset); 2175 error = udf_impl_extattr_check(implext); 2176 if (error) { 2177 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2178 return error; 2179 } 2180 /* it is correct */ 2181 2182 /* 2183 * we have found our "VAT LVExtension attribute. BUT due to a 2184 * bug in the specification it might not be word aligned so 2185 * copy first to avoid panics on some machines (!!) 2186 */ 2187 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2188 lvextpos = implext->data + udf_rw32(implext->iu_l); 2189 2190 lvext.unique_id_chk = vat_uniqueid; 2191 lvext.num_files = lvinfo->num_files; 2192 lvext.num_directories = lvinfo->num_directories; 2193 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2194 2195 memcpy(lvextpos, &lvext, sizeof(lvext)); 2196 2197 return 0; 2198 } 2199 2200 /* --------------------------------------------------------------------- */ 2201 2202 int 2203 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2204 { 2205 struct udf_mount *ump = vat_node->ump; 2206 2207 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2208 return EINVAL; 2209 2210 memcpy(blob, ump->vat_table + offset, size); 2211 return 0; 2212 } 2213 2214 int 2215 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2216 { 2217 struct udf_mount *ump = vat_node->ump; 2218 uint32_t offset_high; 2219 uint8_t *new_vat_table; 2220 2221 /* extent VAT allocation if needed */ 2222 offset_high = offset + size; 2223 if (offset_high >= ump->vat_table_alloc_len) { 2224 /* realloc */ 2225 new_vat_table = realloc(ump->vat_table, 2226 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2227 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2228 if (!new_vat_table) { 2229 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2230 return ENOMEM; 2231 } 2232 ump->vat_table = new_vat_table; 2233 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2234 } 2235 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2236 2237 memcpy(ump->vat_table + offset, blob, size); 2238 return 0; 2239 } 2240 2241 /* --------------------------------------------------------------------- */ 2242 2243 /* TODO support previous VAT location writeout */ 2244 static int 2245 udf_update_vat_descriptor(struct udf_mount *ump) 2246 { 2247 struct udf_node *vat_node = ump->vat_node; 2248 struct udf_logvol_info *lvinfo = ump->logvol_info; 2249 struct icb_tag *icbtag; 2250 struct udf_oldvat_tail *oldvat_tl; 2251 struct udf_vat *vat; 2252 uint64_t unique_id; 2253 uint32_t lb_size; 2254 uint8_t *raw_vat; 2255 int filetype, error; 2256 2257 KASSERT(vat_node); 2258 KASSERT(lvinfo); 2259 lb_size = udf_rw32(ump->logical_vol->lb_size); 2260 2261 /* get our new unique_id */ 2262 unique_id = udf_advance_uniqueid(ump); 2263 2264 /* get information from fe/efe */ 2265 if (vat_node->fe) { 2266 icbtag = &vat_node->fe->icbtag; 2267 vat_node->fe->unique_id = udf_rw64(unique_id); 2268 } else { 2269 icbtag = &vat_node->efe->icbtag; 2270 vat_node->efe->unique_id = udf_rw64(unique_id); 2271 } 2272 2273 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2274 filetype = icbtag->file_type; 2275 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2276 2277 /* allocate piece to process head or tail of VAT file */ 2278 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2279 2280 if (filetype == 0) { 2281 /* 2282 * Update "*UDF VAT LVExtension" extended attribute from the 2283 * lvint if present. 2284 */ 2285 udf_update_vat_extattr_from_lvid(vat_node); 2286 2287 /* setup identifying regid */ 2288 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2289 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2290 2291 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2292 udf_add_udf_regid(ump, &oldvat_tl->id); 2293 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2294 2295 /* write out new tail of virtual allocation table file */ 2296 error = udf_vat_write(vat_node, raw_vat, 2297 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2298 } else { 2299 /* compose the VAT2 header */ 2300 vat = (struct udf_vat *) raw_vat; 2301 memset(vat, 0, sizeof(struct udf_vat)); 2302 2303 vat->header_len = udf_rw16(152); /* as per spec */ 2304 vat->impl_use_len = udf_rw16(0); 2305 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2306 vat->prev_vat = udf_rw32(0xffffffff); 2307 vat->num_files = lvinfo->num_files; 2308 vat->num_directories = lvinfo->num_directories; 2309 vat->min_udf_readver = lvinfo->min_udf_readver; 2310 vat->min_udf_writever = lvinfo->min_udf_writever; 2311 vat->max_udf_writever = lvinfo->max_udf_writever; 2312 2313 error = udf_vat_write(vat_node, raw_vat, 2314 sizeof(struct udf_vat), 0); 2315 } 2316 free(raw_vat, M_TEMP); 2317 2318 return error; /* success! */ 2319 } 2320 2321 2322 int 2323 udf_writeout_vat(struct udf_mount *ump) 2324 { 2325 struct udf_node *vat_node = ump->vat_node; 2326 uint32_t vat_length; 2327 int error; 2328 2329 KASSERT(vat_node); 2330 2331 DPRINTF(CALL, ("udf_writeout_vat\n")); 2332 2333 mutex_enter(&ump->allocate_mutex); 2334 udf_update_vat_descriptor(ump); 2335 2336 /* write out the VAT contents ; TODO intelligent writing */ 2337 vat_length = ump->vat_table_len; 2338 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2339 ump->vat_table, ump->vat_table_len, 0, 2340 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2341 if (error) { 2342 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2343 goto out; 2344 } 2345 2346 mutex_exit(&ump->allocate_mutex); 2347 2348 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2349 error = VOP_FSYNC(ump->vat_node->vnode, 2350 FSCRED, FSYNC_WAIT, 0, 0); 2351 if (error) 2352 printf("udf_writeout_vat: error writing VAT node!\n"); 2353 out: 2354 2355 return error; 2356 } 2357 2358 /* --------------------------------------------------------------------- */ 2359 2360 /* 2361 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2362 * descriptor. If OK, read in complete VAT file. 2363 */ 2364 2365 static int 2366 udf_check_for_vat(struct udf_node *vat_node) 2367 { 2368 struct udf_mount *ump; 2369 struct icb_tag *icbtag; 2370 struct timestamp *mtime; 2371 struct udf_vat *vat; 2372 struct udf_oldvat_tail *oldvat_tl; 2373 struct udf_logvol_info *lvinfo; 2374 uint64_t unique_id; 2375 uint32_t vat_length; 2376 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2377 uint32_t sector_size; 2378 uint32_t *raw_vat; 2379 uint8_t *vat_table; 2380 char *regid_name; 2381 int filetype; 2382 int error; 2383 2384 /* vat_length is really 64 bits though impossible */ 2385 2386 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2387 if (!vat_node) 2388 return ENOENT; 2389 2390 /* get mount info */ 2391 ump = vat_node->ump; 2392 sector_size = udf_rw32(ump->logical_vol->lb_size); 2393 2394 /* check assertions */ 2395 assert(vat_node->fe || vat_node->efe); 2396 assert(ump->logvol_integrity); 2397 2398 /* set vnode type to regular file or we can't read from it! */ 2399 vat_node->vnode->v_type = VREG; 2400 2401 /* get information from fe/efe */ 2402 if (vat_node->fe) { 2403 vat_length = udf_rw64(vat_node->fe->inf_len); 2404 icbtag = &vat_node->fe->icbtag; 2405 mtime = &vat_node->fe->mtime; 2406 unique_id = udf_rw64(vat_node->fe->unique_id); 2407 } else { 2408 vat_length = udf_rw64(vat_node->efe->inf_len); 2409 icbtag = &vat_node->efe->icbtag; 2410 mtime = &vat_node->efe->mtime; 2411 unique_id = udf_rw64(vat_node->efe->unique_id); 2412 } 2413 2414 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2415 filetype = icbtag->file_type; 2416 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2417 return ENOENT; 2418 2419 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2420 2421 vat_table_alloc_len = 2422 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2423 * UDF_VAT_CHUNKSIZE; 2424 2425 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2426 M_CANFAIL | M_WAITOK); 2427 if (vat_table == NULL) { 2428 printf("allocation of %d bytes failed for VAT\n", 2429 vat_table_alloc_len); 2430 return ENOMEM; 2431 } 2432 2433 /* allocate piece to read in head or tail of VAT file */ 2434 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2435 2436 /* 2437 * check contents of the file if its the old 1.50 VAT table format. 2438 * Its notoriously broken and allthough some implementations support an 2439 * extention as defined in the UDF 1.50 errata document, its doubtfull 2440 * to be useable since a lot of implementations don't maintain it. 2441 */ 2442 lvinfo = ump->logvol_info; 2443 2444 if (filetype == 0) { 2445 /* definition */ 2446 vat_offset = 0; 2447 vat_entries = (vat_length-36)/4; 2448 2449 /* read in tail of virtual allocation table file */ 2450 error = vn_rdwr(UIO_READ, vat_node->vnode, 2451 (uint8_t *) raw_vat, 2452 sizeof(struct udf_oldvat_tail), 2453 vat_entries * 4, 2454 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2455 NULL, NULL); 2456 if (error) 2457 goto out; 2458 2459 /* check 1.50 VAT */ 2460 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2461 regid_name = (char *) oldvat_tl->id.id; 2462 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2463 if (error) { 2464 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2465 error = ENOENT; 2466 goto out; 2467 } 2468 2469 /* 2470 * update LVID from "*UDF VAT LVExtension" extended attribute 2471 * if present. 2472 */ 2473 udf_update_lvid_from_vat_extattr(vat_node); 2474 } else { 2475 /* read in head of virtual allocation table file */ 2476 error = vn_rdwr(UIO_READ, vat_node->vnode, 2477 (uint8_t *) raw_vat, 2478 sizeof(struct udf_vat), 0, 2479 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2480 NULL, NULL); 2481 if (error) 2482 goto out; 2483 2484 /* definition */ 2485 vat = (struct udf_vat *) raw_vat; 2486 vat_offset = vat->header_len; 2487 vat_entries = (vat_length - vat_offset)/4; 2488 2489 assert(lvinfo); 2490 lvinfo->num_files = vat->num_files; 2491 lvinfo->num_directories = vat->num_directories; 2492 lvinfo->min_udf_readver = vat->min_udf_readver; 2493 lvinfo->min_udf_writever = vat->min_udf_writever; 2494 lvinfo->max_udf_writever = vat->max_udf_writever; 2495 2496 udf_update_logvolname(ump, vat->logvol_id); 2497 } 2498 2499 /* read in complete VAT file */ 2500 error = vn_rdwr(UIO_READ, vat_node->vnode, 2501 vat_table, 2502 vat_length, 0, 2503 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2504 NULL, NULL); 2505 if (error) 2506 printf("read in of complete VAT file failed (error %d)\n", 2507 error); 2508 if (error) 2509 goto out; 2510 2511 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2512 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2513 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2514 ump->logvol_integrity->time = *mtime; 2515 2516 ump->vat_table_len = vat_length; 2517 ump->vat_table_alloc_len = vat_table_alloc_len; 2518 ump->vat_table = vat_table; 2519 ump->vat_offset = vat_offset; 2520 ump->vat_entries = vat_entries; 2521 ump->vat_last_free_lb = 0; /* start at beginning */ 2522 2523 out: 2524 if (error) { 2525 if (vat_table) 2526 free(vat_table, M_UDFVOLD); 2527 } 2528 free(raw_vat, M_TEMP); 2529 2530 return error; 2531 } 2532 2533 /* --------------------------------------------------------------------- */ 2534 2535 static int 2536 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2537 { 2538 struct udf_node *vat_node; 2539 struct long_ad icb_loc; 2540 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2541 int error; 2542 2543 /* mapping info not needed */ 2544 mapping = mapping; 2545 2546 vat_loc = ump->last_possible_vat_location; 2547 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2548 2549 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2550 vat_loc, early_vat_loc)); 2551 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2552 late_vat_loc = vat_loc + 1024; 2553 2554 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2555 vat_loc, early_vat_loc)); 2556 2557 /* start looking from the end of the range */ 2558 do { 2559 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2560 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2561 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2562 2563 error = udf_get_node(ump, &icb_loc, &vat_node); 2564 if (!error) { 2565 error = udf_check_for_vat(vat_node); 2566 DPRINTFIF(VOLUMES, !error, 2567 ("VAT accepted at %d\n", vat_loc)); 2568 if (!error) 2569 break; 2570 } 2571 if (vat_node) { 2572 vput(vat_node->vnode); 2573 vat_node = NULL; 2574 } 2575 vat_loc--; /* walk backwards */ 2576 } while (vat_loc >= early_vat_loc); 2577 2578 /* keep our VAT node around */ 2579 if (vat_node) { 2580 UDF_SET_SYSTEMFILE(vat_node->vnode); 2581 ump->vat_node = vat_node; 2582 } 2583 2584 return error; 2585 } 2586 2587 /* --------------------------------------------------------------------- */ 2588 2589 static int 2590 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2591 { 2592 union dscrptr *dscr; 2593 struct part_map_spare *pms = &mapping->pms; 2594 uint32_t lb_num; 2595 int spar, error; 2596 2597 /* 2598 * The partition mapping passed on to us specifies the information we 2599 * need to locate and initialise the sparable partition mapping 2600 * information we need. 2601 */ 2602 2603 DPRINTF(VOLUMES, ("Read sparable table\n")); 2604 ump->sparable_packet_size = udf_rw16(pms->packet_len); 2605 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 2606 2607 for (spar = 0; spar < pms->n_st; spar++) { 2608 lb_num = pms->st_loc[spar]; 2609 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 2610 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 2611 if (!error && dscr) { 2612 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 2613 if (ump->sparing_table) 2614 free(ump->sparing_table, M_UDFVOLD); 2615 ump->sparing_table = &dscr->spt; 2616 dscr = NULL; 2617 DPRINTF(VOLUMES, 2618 ("Sparing table accepted (%d entries)\n", 2619 udf_rw16(ump->sparing_table->rt_l))); 2620 break; /* we're done */ 2621 } 2622 } 2623 if (dscr) 2624 free(dscr, M_UDFVOLD); 2625 } 2626 2627 if (ump->sparing_table) 2628 return 0; 2629 2630 return ENOENT; 2631 } 2632 2633 /* --------------------------------------------------------------------- */ 2634 2635 static int 2636 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 2637 { 2638 struct part_map_meta *pmm = &mapping->pmm; 2639 struct long_ad icb_loc; 2640 struct vnode *vp; 2641 int error; 2642 2643 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 2644 icb_loc.loc.part_num = pmm->part_num; 2645 icb_loc.loc.lb_num = pmm->meta_file_lbn; 2646 DPRINTF(VOLUMES, ("Metadata file\n")); 2647 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 2648 if (ump->metadata_node) { 2649 vp = ump->metadata_node->vnode; 2650 UDF_SET_SYSTEMFILE(vp); 2651 } 2652 2653 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 2654 if (icb_loc.loc.lb_num != -1) { 2655 DPRINTF(VOLUMES, ("Metadata copy file\n")); 2656 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 2657 if (ump->metadatamirror_node) { 2658 vp = ump->metadatamirror_node->vnode; 2659 UDF_SET_SYSTEMFILE(vp); 2660 } 2661 } 2662 2663 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 2664 if (icb_loc.loc.lb_num != -1) { 2665 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 2666 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 2667 if (ump->metadatabitmap_node) { 2668 vp = ump->metadatabitmap_node->vnode; 2669 UDF_SET_SYSTEMFILE(vp); 2670 } 2671 } 2672 2673 /* if we're mounting read-only we relax the requirements */ 2674 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 2675 error = EFAULT; 2676 if (ump->metadata_node) 2677 error = 0; 2678 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 2679 printf( "udf mount: Metadata file not readable, " 2680 "substituting Metadata copy file\n"); 2681 ump->metadata_node = ump->metadatamirror_node; 2682 ump->metadatamirror_node = NULL; 2683 error = 0; 2684 } 2685 } else { 2686 /* mounting read/write */ 2687 DPRINTF(VOLUMES, ("udf mount: read only file system\n")); 2688 error = EROFS; 2689 } 2690 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 2691 "metadata files\n")); 2692 return error; 2693 } 2694 2695 /* --------------------------------------------------------------------- */ 2696 2697 int 2698 udf_read_vds_tables(struct udf_mount *ump) 2699 { 2700 union udf_pmap *mapping; 2701 /* struct udf_args *args = &ump->mount_args; */ 2702 uint32_t n_pm, mt_l; 2703 uint32_t log_part; 2704 uint8_t *pmap_pos; 2705 int pmap_size; 2706 int error; 2707 2708 /* Iterate again over the part mappings for locations */ 2709 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 2710 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 2711 pmap_pos = ump->logical_vol->maps; 2712 2713 for (log_part = 0; log_part < n_pm; log_part++) { 2714 mapping = (union udf_pmap *) pmap_pos; 2715 switch (ump->vtop_tp[log_part]) { 2716 case UDF_VTOP_TYPE_PHYS : 2717 /* nothing */ 2718 break; 2719 case UDF_VTOP_TYPE_VIRT : 2720 /* search and load VAT */ 2721 error = udf_search_vat(ump, mapping); 2722 if (error) 2723 return ENOENT; 2724 break; 2725 case UDF_VTOP_TYPE_SPARABLE : 2726 /* load one of the sparable tables */ 2727 error = udf_read_sparables(ump, mapping); 2728 if (error) 2729 return ENOENT; 2730 break; 2731 case UDF_VTOP_TYPE_META : 2732 /* load the associated file descriptors */ 2733 error = udf_read_metadata_nodes(ump, mapping); 2734 if (error) 2735 return ENOENT; 2736 break; 2737 default: 2738 break; 2739 } 2740 pmap_size = pmap_pos[1]; 2741 pmap_pos += pmap_size; 2742 } 2743 2744 return 0; 2745 } 2746 2747 /* --------------------------------------------------------------------- */ 2748 2749 int 2750 udf_read_rootdirs(struct udf_mount *ump) 2751 { 2752 union dscrptr *dscr; 2753 /* struct udf_args *args = &ump->mount_args; */ 2754 struct udf_node *rootdir_node, *streamdir_node; 2755 struct long_ad fsd_loc, *dir_loc; 2756 uint32_t lb_num, dummy; 2757 uint32_t fsd_len; 2758 int dscr_type; 2759 int error; 2760 2761 /* TODO implement FSD reading in separate function like integrity? */ 2762 /* get fileset descriptor sequence */ 2763 fsd_loc = ump->logical_vol->lv_fsd_loc; 2764 fsd_len = udf_rw32(fsd_loc.len); 2765 2766 dscr = NULL; 2767 error = 0; 2768 while (fsd_len || error) { 2769 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 2770 /* translate fsd_loc to lb_num */ 2771 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 2772 if (error) 2773 break; 2774 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 2775 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 2776 /* end markers */ 2777 if (error || (dscr == NULL)) 2778 break; 2779 2780 /* analyse */ 2781 dscr_type = udf_rw16(dscr->tag.id); 2782 if (dscr_type == TAGID_TERM) 2783 break; 2784 if (dscr_type != TAGID_FSD) { 2785 free(dscr, M_UDFVOLD); 2786 return ENOENT; 2787 } 2788 2789 /* 2790 * TODO check for multiple fileset descriptors; its only 2791 * picking the last now. Also check for FSD 2792 * correctness/interpretability 2793 */ 2794 2795 /* update */ 2796 if (ump->fileset_desc) { 2797 free(ump->fileset_desc, M_UDFVOLD); 2798 } 2799 ump->fileset_desc = &dscr->fsd; 2800 dscr = NULL; 2801 2802 /* continue to the next fsd */ 2803 fsd_len -= ump->discinfo.sector_size; 2804 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 2805 2806 /* follow up to fsd->next_ex (long_ad) if its not null */ 2807 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 2808 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 2809 fsd_loc = ump->fileset_desc->next_ex; 2810 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 2811 } 2812 } 2813 if (dscr) 2814 free(dscr, M_UDFVOLD); 2815 2816 /* there has to be one */ 2817 if (ump->fileset_desc == NULL) 2818 return ENOENT; 2819 2820 DPRINTF(VOLUMES, ("FSD read in fine\n")); 2821 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 2822 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 2823 2824 /* 2825 * Now the FSD is known, read in the rootdirectory and if one exists, 2826 * the system stream dir. Some files in the system streamdir are not 2827 * wanted in this implementation since they are not maintained. If 2828 * writing is enabled we'll delete these files if they exist. 2829 */ 2830 2831 rootdir_node = streamdir_node = NULL; 2832 dir_loc = NULL; 2833 2834 /* try to read in the rootdir */ 2835 dir_loc = &ump->fileset_desc->rootdir_icb; 2836 error = udf_get_node(ump, dir_loc, &rootdir_node); 2837 if (error) 2838 return ENOENT; 2839 2840 /* aparently it read in fine */ 2841 2842 /* 2843 * Try the system stream directory; not very likely in the ones we 2844 * test, but for completeness. 2845 */ 2846 dir_loc = &ump->fileset_desc->streamdir_icb; 2847 if (udf_rw32(dir_loc->len)) { 2848 printf("udf_read_rootdirs: streamdir defined "); 2849 error = udf_get_node(ump, dir_loc, &streamdir_node); 2850 if (error) { 2851 printf("but error in streamdir reading\n"); 2852 } else { 2853 printf("but ignored\n"); 2854 /* 2855 * TODO process streamdir `baddies' i.e. files we dont 2856 * want if R/W 2857 */ 2858 } 2859 } 2860 2861 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 2862 2863 /* release the vnodes again; they'll be auto-recycled later */ 2864 if (streamdir_node) { 2865 vput(streamdir_node->vnode); 2866 } 2867 if (rootdir_node) { 2868 vput(rootdir_node->vnode); 2869 } 2870 2871 return 0; 2872 } 2873 2874 /* --------------------------------------------------------------------- */ 2875 2876 /* To make absolutely sure we are NOT returning zero, add one :) */ 2877 2878 long 2879 udf_calchash(struct long_ad *icbptr) 2880 { 2881 /* ought to be enough since each mountpoint has its own chain */ 2882 return udf_rw32(icbptr->loc.lb_num) + 1; 2883 } 2884 2885 2886 static struct udf_node * 2887 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 2888 { 2889 struct udf_node *node; 2890 struct vnode *vp; 2891 uint32_t hashline; 2892 2893 loop: 2894 mutex_enter(&ump->ihash_lock); 2895 2896 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 2897 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 2898 assert(node); 2899 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 2900 node->loc.loc.part_num == icbptr->loc.part_num) { 2901 vp = node->vnode; 2902 assert(vp); 2903 mutex_enter(&vp->v_interlock); 2904 mutex_exit(&ump->ihash_lock); 2905 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 2906 goto loop; 2907 return node; 2908 } 2909 } 2910 mutex_exit(&ump->ihash_lock); 2911 2912 return NULL; 2913 } 2914 2915 2916 static void 2917 udf_sorted_list_insert(struct udf_node *node) 2918 { 2919 struct udf_mount *ump; 2920 struct udf_node *s_node, *last_node; 2921 uint32_t loc, s_loc; 2922 2923 ump = node->ump; 2924 2925 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 2926 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 2927 return; 2928 } 2929 2930 /* 2931 * We sort on logical block number here and not on physical block 2932 * number here. Ideally we should go for the physical block nr to get 2933 * better sync performance though this sort will ensure that packets 2934 * won't get spit up unnessisarily. 2935 */ 2936 2937 last_node = NULL; 2938 loc = udf_rw32(node->loc.loc.lb_num); 2939 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 2940 s_loc = udf_rw32(s_node->loc.loc.lb_num); 2941 if (s_loc > loc) { 2942 LIST_INSERT_BEFORE(s_node, node, sortchain); 2943 return; 2944 } 2945 last_node = s_node; 2946 } 2947 KASSERT(last_node); 2948 LIST_INSERT_AFTER(last_node, node, sortchain); 2949 } 2950 2951 2952 static void 2953 udf_register_node(struct udf_node *node) 2954 { 2955 struct udf_mount *ump; 2956 struct udf_node *chk; 2957 uint32_t hashline; 2958 2959 ump = node->ump; 2960 mutex_enter(&ump->ihash_lock); 2961 2962 /* add to our hash table */ 2963 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 2964 #ifdef DEBUG 2965 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 2966 assert(chk); 2967 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 2968 chk->loc.loc.part_num == node->loc.loc.part_num) 2969 panic("Double node entered\n"); 2970 } 2971 #else 2972 chk = NULL; 2973 #endif 2974 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 2975 2976 /* add to our sorted list */ 2977 udf_sorted_list_insert(node); 2978 2979 mutex_exit(&ump->ihash_lock); 2980 } 2981 2982 2983 static void 2984 udf_deregister_node(struct udf_node *node) 2985 { 2986 struct udf_mount *ump; 2987 2988 ump = node->ump; 2989 mutex_enter(&ump->ihash_lock); 2990 2991 /* from hash and sorted list */ 2992 LIST_REMOVE(node, hashchain); 2993 LIST_REMOVE(node, sortchain); 2994 2995 mutex_exit(&ump->ihash_lock); 2996 } 2997 2998 /* --------------------------------------------------------------------- */ 2999 3000 static void 3001 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 3002 uint32_t sector) 3003 { 3004 assert(ump->logical_vol); 3005 3006 tag->id = udf_rw16(tagid); 3007 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 3008 tag->cksum = 0; 3009 tag->reserved = 0; 3010 tag->serial_num = ump->logical_vol->tag.serial_num; 3011 tag->tag_loc = udf_rw32(sector); 3012 } 3013 3014 3015 uint64_t 3016 udf_advance_uniqueid(struct udf_mount *ump) 3017 { 3018 uint64_t unique_id; 3019 3020 mutex_enter(&ump->logvol_mutex); 3021 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 3022 if (unique_id < 0x10) 3023 unique_id = 0x10; 3024 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 3025 mutex_exit(&ump->logvol_mutex); 3026 3027 return unique_id; 3028 } 3029 3030 3031 static void 3032 udf_adjust_filecount(struct udf_node *udf_node, int sign) 3033 { 3034 struct udf_mount *ump = udf_node->ump; 3035 uint32_t num_dirs, num_files; 3036 int udf_file_type; 3037 3038 /* get file type */ 3039 if (udf_node->fe) { 3040 udf_file_type = udf_node->fe->icbtag.file_type; 3041 } else { 3042 udf_file_type = udf_node->efe->icbtag.file_type; 3043 } 3044 3045 /* adjust file count */ 3046 mutex_enter(&ump->allocate_mutex); 3047 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 3048 num_dirs = udf_rw32(ump->logvol_info->num_directories); 3049 ump->logvol_info->num_directories = 3050 udf_rw32((num_dirs + sign)); 3051 } else { 3052 num_files = udf_rw32(ump->logvol_info->num_files); 3053 ump->logvol_info->num_files = 3054 udf_rw32((num_files + sign)); 3055 } 3056 mutex_exit(&ump->allocate_mutex); 3057 } 3058 3059 3060 void 3061 udf_osta_charset(struct charspec *charspec) 3062 { 3063 bzero(charspec, sizeof(struct charspec)); 3064 charspec->type = 0; 3065 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 3066 } 3067 3068 3069 /* first call udf_set_regid and then the suffix */ 3070 void 3071 udf_set_regid(struct regid *regid, char const *name) 3072 { 3073 bzero(regid, sizeof(struct regid)); 3074 regid->flags = 0; /* not dirty and not protected */ 3075 strcpy((char *) regid->id, name); 3076 } 3077 3078 3079 void 3080 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 3081 { 3082 uint16_t *ver; 3083 3084 ver = (uint16_t *) regid->id_suffix; 3085 *ver = ump->logvol_info->min_udf_readver; 3086 } 3087 3088 3089 void 3090 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 3091 { 3092 uint16_t *ver; 3093 3094 ver = (uint16_t *) regid->id_suffix; 3095 *ver = ump->logvol_info->min_udf_readver; 3096 3097 regid->id_suffix[2] = 4; /* unix */ 3098 regid->id_suffix[3] = 8; /* NetBSD */ 3099 } 3100 3101 3102 void 3103 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 3104 { 3105 regid->id_suffix[0] = 4; /* unix */ 3106 regid->id_suffix[1] = 8; /* NetBSD */ 3107 } 3108 3109 3110 void 3111 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 3112 { 3113 regid->id_suffix[0] = APP_VERSION_MAIN; 3114 regid->id_suffix[1] = APP_VERSION_SUB; 3115 } 3116 3117 static int 3118 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 3119 struct long_ad *parent, uint64_t unique_id) 3120 { 3121 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 3122 int fidsize = 40; 3123 3124 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 3125 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 3126 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 3127 fid->icb = *parent; 3128 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 3129 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 3130 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 3131 3132 return fidsize; 3133 } 3134 3135 /* --------------------------------------------------------------------- */ 3136 3137 int 3138 udf_open_logvol(struct udf_mount *ump) 3139 { 3140 int logvol_integrity; 3141 int error; 3142 3143 /* already/still open? */ 3144 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3145 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3146 return 0; 3147 3148 /* can we open it ? */ 3149 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3150 return EROFS; 3151 3152 /* setup write parameters */ 3153 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3154 if ((error = udf_setup_writeparams(ump)) != 0) 3155 return error; 3156 3157 /* determine data and metadata tracks (most likely same) */ 3158 error = udf_search_writing_tracks(ump); 3159 if (error) { 3160 /* most likely lack of space */ 3161 printf("udf_open_logvol: error searching writing tracks\n"); 3162 return EROFS; 3163 } 3164 3165 /* writeout/update lvint on disc or only in memory */ 3166 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3167 if (ump->lvopen & UDF_OPEN_SESSION) { 3168 /* TODO implement writeout of VRS + VDS */ 3169 printf( "udf_open_logvol:Opening a closed session not yet " 3170 "implemented\n"); 3171 return EROFS; 3172 3173 /* determine data and metadata tracks again */ 3174 error = udf_search_writing_tracks(ump); 3175 } 3176 3177 /* mark it open */ 3178 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3179 3180 /* do we need to write it out? */ 3181 if (ump->lvopen & UDF_WRITE_LVINT) { 3182 error = udf_writeout_lvint(ump, ump->lvopen); 3183 /* if we couldn't write it mark it closed again */ 3184 if (error) { 3185 ump->logvol_integrity->integrity_type = 3186 udf_rw32(UDF_INTEGRITY_CLOSED); 3187 return error; 3188 } 3189 } 3190 3191 return 0; 3192 } 3193 3194 3195 int 3196 udf_close_logvol(struct udf_mount *ump, int mntflags) 3197 { 3198 int logvol_integrity; 3199 int error = 0; 3200 int n; 3201 3202 /* already/still closed? */ 3203 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3204 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3205 return 0; 3206 3207 /* writeout/update lvint or write out VAT */ 3208 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3209 if (ump->lvclose & UDF_WRITE_VAT) { 3210 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3211 3212 /* preprocess the VAT node; its modified on every writeout */ 3213 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3214 udf_update_vat_descriptor(ump->vat_node->ump); 3215 3216 /* write out the VAT node */ 3217 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3218 for (n = 0; n < 16; n++) { 3219 ump->vat_node->i_flags |= IN_MODIFIED; 3220 error = VOP_FSYNC(ump->vat_node->vnode, 3221 FSCRED, FSYNC_WAIT, 0, 0); 3222 } 3223 if (error) { 3224 printf("udf_close_logvol: writeout of VAT failed\n"); 3225 return error; 3226 } 3227 } 3228 3229 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3230 error = udf_write_partition_spacetables(ump, 1 /* waitfor */); 3231 if (error) { 3232 printf( "udf_close_logvol: writeout of space tables " 3233 "failed\n"); 3234 return error; 3235 } 3236 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3237 } 3238 3239 if (ump->lvclose & UDF_CLOSE_SESSION) { 3240 printf("TODO: Closing a session is not yet implemented\n"); 3241 return EROFS; 3242 ump->lvopen |= UDF_OPEN_SESSION; 3243 } 3244 3245 /* mark it closed */ 3246 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3247 3248 /* do we need to write out the logical volume integrity */ 3249 if (ump->lvclose & UDF_WRITE_LVINT) 3250 error = udf_writeout_lvint(ump, ump->lvopen); 3251 if (error) { 3252 /* HELP now what? mark it open again for now */ 3253 ump->logvol_integrity->integrity_type = 3254 udf_rw32(UDF_INTEGRITY_OPEN); 3255 return error; 3256 } 3257 3258 (void) udf_synchronise_caches(ump); 3259 3260 return 0; 3261 } 3262 3263 /* --------------------------------------------------------------------- */ 3264 3265 /* 3266 * Genfs interfacing 3267 * 3268 * static const struct genfs_ops udf_genfsops = { 3269 * .gop_size = genfs_size, 3270 * size of transfers 3271 * .gop_alloc = udf_gop_alloc, 3272 * allocate len bytes at offset 3273 * .gop_write = genfs_gop_write, 3274 * putpages interface code 3275 * .gop_markupdate = udf_gop_markupdate, 3276 * set update/modify flags etc. 3277 * } 3278 */ 3279 3280 /* 3281 * Genfs interface. These four functions are the only ones defined though not 3282 * documented... great.... 3283 */ 3284 3285 /* 3286 * Callback from genfs to allocate len bytes at offset off; only called when 3287 * filling up gaps in the allocation. 3288 */ 3289 /* XXX should be check if there is space enough in udf_gop_alloc? */ 3290 static int 3291 udf_gop_alloc(struct vnode *vp, off_t off, 3292 off_t len, int flags, kauth_cred_t cred) 3293 { 3294 #if 0 3295 struct udf_node *udf_node = VTOI(vp); 3296 struct udf_mount *ump = udf_node->ump; 3297 uint32_t lb_size, num_lb; 3298 #endif 3299 3300 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3301 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3302 3303 return 0; 3304 } 3305 3306 3307 /* 3308 * callback from genfs to update our flags 3309 */ 3310 static void 3311 udf_gop_markupdate(struct vnode *vp, int flags) 3312 { 3313 struct udf_node *udf_node = VTOI(vp); 3314 u_long mask = 0; 3315 3316 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3317 mask = IN_ACCESS; 3318 } 3319 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3320 if (vp->v_type == VREG) { 3321 mask |= IN_CHANGE | IN_UPDATE; 3322 } else { 3323 mask |= IN_MODIFY; 3324 } 3325 } 3326 if (mask) { 3327 udf_node->i_flags |= mask; 3328 } 3329 } 3330 3331 3332 static const struct genfs_ops udf_genfsops = { 3333 .gop_size = genfs_size, 3334 .gop_alloc = udf_gop_alloc, 3335 .gop_write = genfs_gop_write_rwmap, 3336 .gop_markupdate = udf_gop_markupdate, 3337 }; 3338 3339 3340 /* --------------------------------------------------------------------- */ 3341 3342 int 3343 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3344 { 3345 union dscrptr *dscr; 3346 int error; 3347 3348 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3349 bzero(dscr, ump->discinfo.sector_size); 3350 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3351 3352 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3353 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3354 (void) udf_validate_tag_and_crc_sums(dscr); 3355 3356 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3357 dscr, sector, sector); 3358 3359 free(dscr, M_TEMP); 3360 3361 return error; 3362 } 3363 3364 3365 /* --------------------------------------------------------------------- */ 3366 3367 /* UDF<->unix converters */ 3368 3369 /* --------------------------------------------------------------------- */ 3370 3371 static mode_t 3372 udf_perm_to_unix_mode(uint32_t perm) 3373 { 3374 mode_t mode; 3375 3376 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3377 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3378 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3379 3380 return mode; 3381 } 3382 3383 /* --------------------------------------------------------------------- */ 3384 3385 static uint32_t 3386 unix_mode_to_udf_perm(mode_t mode) 3387 { 3388 uint32_t perm; 3389 3390 perm = ((mode & S_IRWXO) ); 3391 perm |= ((mode & S_IRWXG) << 2); 3392 perm |= ((mode & S_IRWXU) << 4); 3393 perm |= ((mode & S_IWOTH) << 3); 3394 perm |= ((mode & S_IWGRP) << 5); 3395 perm |= ((mode & S_IWUSR) << 7); 3396 3397 return perm; 3398 } 3399 3400 /* --------------------------------------------------------------------- */ 3401 3402 static uint32_t 3403 udf_icb_to_unix_filetype(uint32_t icbftype) 3404 { 3405 switch (icbftype) { 3406 case UDF_ICB_FILETYPE_DIRECTORY : 3407 case UDF_ICB_FILETYPE_STREAMDIR : 3408 return S_IFDIR; 3409 case UDF_ICB_FILETYPE_FIFO : 3410 return S_IFIFO; 3411 case UDF_ICB_FILETYPE_CHARDEVICE : 3412 return S_IFCHR; 3413 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3414 return S_IFBLK; 3415 case UDF_ICB_FILETYPE_RANDOMACCESS : 3416 case UDF_ICB_FILETYPE_REALTIME : 3417 return S_IFREG; 3418 case UDF_ICB_FILETYPE_SYMLINK : 3419 return S_IFLNK; 3420 case UDF_ICB_FILETYPE_SOCKET : 3421 return S_IFSOCK; 3422 } 3423 /* no idea what this is */ 3424 return 0; 3425 } 3426 3427 /* --------------------------------------------------------------------- */ 3428 3429 void 3430 udf_to_unix_name(char *result, char *id, int len, struct charspec *chsp) 3431 { 3432 uint16_t *raw_name, *unix_name; 3433 uint16_t *inchp, ch; 3434 uint8_t *outchp; 3435 const char *osta_id = "OSTA Compressed Unicode"; 3436 int ucode_chars, nice_uchars, is_osta_typ0; 3437 3438 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3439 unix_name = raw_name + 1024; /* split space in half */ 3440 assert(sizeof(char) == sizeof(uint8_t)); 3441 outchp = (uint8_t *) result; 3442 3443 is_osta_typ0 = (chsp->type == 0); 3444 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3445 if (is_osta_typ0) { 3446 *raw_name = *unix_name = 0; 3447 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3448 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3449 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3450 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3451 ch = *inchp; 3452 /* XXX sloppy unicode -> latin */ 3453 *outchp++ = ch & 255; 3454 if (!ch) break; 3455 } 3456 *outchp++ = 0; 3457 } else { 3458 /* assume 8bit char length byte latin-1 */ 3459 assert(*id == 8); 3460 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3461 } 3462 free(raw_name, M_UDFTEMP); 3463 } 3464 3465 /* --------------------------------------------------------------------- */ 3466 3467 void 3468 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3469 struct charspec *chsp) 3470 { 3471 uint16_t *raw_name; 3472 uint16_t *outchp; 3473 const char *inchp; 3474 const char *osta_id = "OSTA Compressed Unicode"; 3475 int cnt, udf_chars, is_osta_typ0; 3476 3477 /* allocate temporary unicode-16 buffer */ 3478 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3479 3480 /* convert latin-1 or whatever to unicode-16 */ 3481 *raw_name = 0; 3482 inchp = name; 3483 outchp = raw_name; 3484 for (cnt = name_len; cnt; cnt--) { 3485 *outchp++ = (uint16_t) (*inchp++); 3486 } 3487 3488 is_osta_typ0 = (chsp->type == 0); 3489 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3490 if (is_osta_typ0) { 3491 udf_chars = udf_CompressUnicode(name_len, 8, 3492 (unicode_t *) raw_name, 3493 (byte *) result); 3494 } else { 3495 printf("unix to udf name: no CHSP0 ?\n"); 3496 /* XXX assume 8bit char length byte latin-1 */ 3497 *result++ = 8; udf_chars = 1; 3498 strncpy(result, name + 1, name_len); 3499 udf_chars += name_len; 3500 } 3501 *result_len = udf_chars; 3502 free(raw_name, M_UDFTEMP); 3503 } 3504 3505 /* --------------------------------------------------------------------- */ 3506 3507 void 3508 udf_timestamp_to_timespec(struct udf_mount *ump, 3509 struct timestamp *timestamp, 3510 struct timespec *timespec) 3511 { 3512 struct clock_ymdhms ymdhms; 3513 uint32_t usecs, secs, nsecs; 3514 uint16_t tz; 3515 3516 /* fill in ymdhms structure from timestamp */ 3517 memset(&ymdhms, 0, sizeof(ymdhms)); 3518 ymdhms.dt_year = udf_rw16(timestamp->year); 3519 ymdhms.dt_mon = timestamp->month; 3520 ymdhms.dt_day = timestamp->day; 3521 ymdhms.dt_wday = 0; /* ? */ 3522 ymdhms.dt_hour = timestamp->hour; 3523 ymdhms.dt_min = timestamp->minute; 3524 ymdhms.dt_sec = timestamp->second; 3525 3526 secs = clock_ymdhms_to_secs(&ymdhms); 3527 usecs = timestamp->usec + 3528 100*timestamp->hund_usec + 10000*timestamp->centisec; 3529 nsecs = usecs * 1000; 3530 3531 /* 3532 * Calculate the time zone. The timezone is 12 bit signed 2's 3533 * compliment, so we gotta do some extra magic to handle it right. 3534 */ 3535 tz = udf_rw16(timestamp->type_tz); 3536 tz &= 0x0fff; /* only lower 12 bits are significant */ 3537 if (tz & 0x0800) /* sign extention */ 3538 tz |= 0xf000; 3539 3540 /* TODO check timezone conversion */ 3541 /* check if we are specified a timezone to convert */ 3542 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3543 if ((int16_t) tz != -2047) 3544 secs -= (int16_t) tz * 60; 3545 } else { 3546 secs -= ump->mount_args.gmtoff; 3547 } 3548 3549 timespec->tv_sec = secs; 3550 timespec->tv_nsec = nsecs; 3551 } 3552 3553 3554 void 3555 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3556 { 3557 struct clock_ymdhms ymdhms; 3558 uint32_t husec, usec, csec; 3559 3560 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3561 3562 usec = (timespec->tv_nsec + 500) / 1000; /* round */ 3563 husec = usec / 100; 3564 usec -= husec * 100; /* only 0-99 in usec */ 3565 csec = husec / 100; /* only 0-99 in csec */ 3566 husec -= csec * 100; /* only 0-99 in husec */ 3567 3568 /* set method 1 for CUT/GMT */ 3569 timestamp->type_tz = udf_rw16((1<<12) + 0); 3570 timestamp->year = udf_rw16(ymdhms.dt_year); 3571 timestamp->month = ymdhms.dt_mon; 3572 timestamp->day = ymdhms.dt_day; 3573 timestamp->hour = ymdhms.dt_hour; 3574 timestamp->minute = ymdhms.dt_min; 3575 timestamp->second = ymdhms.dt_sec; 3576 timestamp->centisec = csec; 3577 timestamp->hund_usec = husec; 3578 timestamp->usec = usec; 3579 } 3580 3581 /* --------------------------------------------------------------------- */ 3582 3583 /* 3584 * Attribute and filetypes converters with get/set pairs 3585 */ 3586 3587 uint32_t 3588 udf_getaccessmode(struct udf_node *udf_node) 3589 { 3590 struct file_entry *fe = udf_node->fe;; 3591 struct extfile_entry *efe = udf_node->efe; 3592 uint32_t udf_perm, icbftype; 3593 uint32_t mode, ftype; 3594 uint16_t icbflags; 3595 3596 UDF_LOCK_NODE(udf_node, 0); 3597 if (fe) { 3598 udf_perm = udf_rw32(fe->perm); 3599 icbftype = fe->icbtag.file_type; 3600 icbflags = udf_rw16(fe->icbtag.flags); 3601 } else { 3602 assert(udf_node->efe); 3603 udf_perm = udf_rw32(efe->perm); 3604 icbftype = efe->icbtag.file_type; 3605 icbflags = udf_rw16(efe->icbtag.flags); 3606 } 3607 3608 mode = udf_perm_to_unix_mode(udf_perm); 3609 ftype = udf_icb_to_unix_filetype(icbftype); 3610 3611 /* set suid, sgid, sticky from flags in fe/efe */ 3612 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3613 mode |= S_ISUID; 3614 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3615 mode |= S_ISGID; 3616 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3617 mode |= S_ISVTX; 3618 3619 UDF_UNLOCK_NODE(udf_node, 0); 3620 3621 return mode | ftype; 3622 } 3623 3624 3625 void 3626 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3627 { 3628 struct file_entry *fe = udf_node->fe; 3629 struct extfile_entry *efe = udf_node->efe; 3630 uint32_t udf_perm; 3631 uint16_t icbflags; 3632 3633 UDF_LOCK_NODE(udf_node, 0); 3634 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3635 if (fe) { 3636 icbflags = udf_rw16(fe->icbtag.flags); 3637 } else { 3638 icbflags = udf_rw16(efe->icbtag.flags); 3639 } 3640 3641 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3642 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3643 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3644 if (mode & S_ISUID) 3645 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3646 if (mode & S_ISGID) 3647 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3648 if (mode & S_ISVTX) 3649 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3650 3651 if (fe) { 3652 fe->perm = udf_rw32(udf_perm); 3653 fe->icbtag.flags = udf_rw16(icbflags); 3654 } else { 3655 efe->perm = udf_rw32(udf_perm); 3656 efe->icbtag.flags = udf_rw16(icbflags); 3657 } 3658 3659 UDF_UNLOCK_NODE(udf_node, 0); 3660 } 3661 3662 3663 void 3664 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3665 { 3666 struct udf_mount *ump = udf_node->ump; 3667 struct file_entry *fe = udf_node->fe; 3668 struct extfile_entry *efe = udf_node->efe; 3669 uid_t uid; 3670 gid_t gid; 3671 3672 UDF_LOCK_NODE(udf_node, 0); 3673 if (fe) { 3674 uid = (uid_t)udf_rw32(fe->uid); 3675 gid = (gid_t)udf_rw32(fe->gid); 3676 } else { 3677 assert(udf_node->efe); 3678 uid = (uid_t)udf_rw32(efe->uid); 3679 gid = (gid_t)udf_rw32(efe->gid); 3680 } 3681 3682 /* do the uid/gid translation game */ 3683 if ((uid == (uid_t) -1) && (gid == (gid_t) -1)) { 3684 uid = ump->mount_args.anon_uid; 3685 gid = ump->mount_args.anon_gid; 3686 } 3687 *uidp = uid; 3688 *gidp = gid; 3689 3690 UDF_UNLOCK_NODE(udf_node, 0); 3691 } 3692 3693 3694 void 3695 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 3696 { 3697 struct udf_mount *ump = udf_node->ump; 3698 struct file_entry *fe = udf_node->fe; 3699 struct extfile_entry *efe = udf_node->efe; 3700 uid_t nobody_uid; 3701 gid_t nobody_gid; 3702 3703 UDF_LOCK_NODE(udf_node, 0); 3704 3705 /* do the uid/gid translation game */ 3706 nobody_uid = ump->mount_args.nobody_uid; 3707 nobody_gid = ump->mount_args.nobody_gid; 3708 if ((uid == nobody_uid) && (gid == nobody_gid)) { 3709 uid = (uid_t) -1; 3710 gid = (gid_t) -1; 3711 } 3712 3713 if (fe) { 3714 fe->uid = udf_rw32((uint32_t) uid); 3715 fe->gid = udf_rw32((uint32_t) gid); 3716 } else { 3717 efe->uid = udf_rw32((uint32_t) uid); 3718 efe->gid = udf_rw32((uint32_t) gid); 3719 } 3720 3721 UDF_UNLOCK_NODE(udf_node, 0); 3722 } 3723 3724 3725 /* --------------------------------------------------------------------- */ 3726 3727 /* 3728 * Directory read and manipulation functions. 3729 * 3730 * Note that if the file is found, the cached diroffset possition *before* the 3731 * advance is remembered. Thus if the same filename is lookup again just after 3732 * this lookup its immediately found. 3733 */ 3734 3735 int 3736 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 3737 struct long_ad *icb_loc) 3738 { 3739 struct udf_node *dir_node = VTOI(vp); 3740 struct file_entry *fe = dir_node->fe; 3741 struct extfile_entry *efe = dir_node->efe; 3742 struct fileid_desc *fid; 3743 struct dirent *dirent; 3744 uint64_t file_size, diroffset, pre_diroffset; 3745 uint32_t lb_size; 3746 int found, error; 3747 3748 /* get directory filesize */ 3749 if (fe) { 3750 file_size = udf_rw64(fe->inf_len); 3751 } else { 3752 assert(efe); 3753 file_size = udf_rw64(efe->inf_len); 3754 } 3755 3756 /* allocate temporary space for fid */ 3757 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 3758 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 3759 3760 found = 0; 3761 diroffset = dir_node->last_diroffset; 3762 3763 /* 3764 * if the directory is trunced or if we have never visited it yet, 3765 * start at the end. 3766 */ 3767 if ((diroffset >= file_size) || (diroffset == 0)) { 3768 diroffset = dir_node->last_diroffset = file_size; 3769 } 3770 3771 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 3772 3773 while (!found) { 3774 /* if at the end, go trough zero */ 3775 if (diroffset >= file_size) 3776 diroffset = 0; 3777 3778 pre_diroffset = diroffset; 3779 3780 /* transfer a new fid/dirent */ 3781 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 3782 if (error) 3783 break; 3784 3785 /* skip deleted entries */ 3786 if ((fid->file_char & UDF_FILE_CHAR_DEL) == 0) { 3787 if ((strlen(dirent->d_name) == namelen) && 3788 (strncmp(dirent->d_name, name, namelen) == 0)) { 3789 found = 1; 3790 *icb_loc = fid->icb; 3791 /* remember where we were before the advance */ 3792 diroffset = pre_diroffset; 3793 } 3794 } 3795 3796 if (diroffset == dir_node->last_diroffset) { 3797 /* we have cycled */ 3798 break; 3799 } 3800 } 3801 free(fid, M_UDFTEMP); 3802 free(dirent, M_UDFTEMP); 3803 dir_node->last_diroffset = diroffset; 3804 3805 return found; 3806 } 3807 3808 /* --------------------------------------------------------------------- */ 3809 3810 static int 3811 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 3812 struct long_ad *node_icb, struct long_ad *parent_icb, 3813 uint64_t parent_unique_id) 3814 { 3815 struct timespec now; 3816 struct icb_tag *icb; 3817 uint64_t unique_id; 3818 uint32_t fidsize, lb_num; 3819 int crclen; 3820 3821 lb_num = udf_rw32(node_icb->loc.lb_num); 3822 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 3823 icb = &fe->icbtag; 3824 3825 /* 3826 * Always use strategy type 4 unless on WORM wich we don't support 3827 * (yet). Fill in defaults and set for internal allocation of data. 3828 */ 3829 icb->strat_type = udf_rw16(4); 3830 icb->max_num_entries = udf_rw16(1); 3831 icb->file_type = file_type; /* 8 bit */ 3832 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 3833 3834 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 3835 fe->link_cnt = udf_rw16(0); /* explicit setting */ 3836 3837 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 3838 3839 vfs_timestamp(&now); 3840 udf_timespec_to_timestamp(&now, &fe->atime); 3841 udf_timespec_to_timestamp(&now, &fe->attrtime); 3842 udf_timespec_to_timestamp(&now, &fe->mtime); 3843 3844 udf_set_regid(&fe->imp_id, IMPL_NAME); 3845 udf_add_impl_regid(ump, &fe->imp_id); 3846 3847 unique_id = udf_advance_uniqueid(ump); 3848 fe->unique_id = udf_rw64(unique_id); 3849 3850 fidsize = 0; 3851 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 3852 fidsize = udf_create_parentfid(ump, 3853 (struct fileid_desc *) fe->data, parent_icb, 3854 parent_unique_id); 3855 } 3856 3857 /* record fidlength information */ 3858 fe->inf_len = udf_rw64(fidsize); 3859 fe->l_ea = udf_rw32(0); 3860 fe->l_ad = udf_rw32(fidsize); 3861 fe->logblks_rec = udf_rw64(0); /* intern */ 3862 3863 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 3864 crclen += fidsize; 3865 fe->tag.desc_crc_len = udf_rw16(crclen); 3866 3867 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 3868 3869 return fidsize; 3870 } 3871 3872 /* --------------------------------------------------------------------- */ 3873 3874 static int 3875 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 3876 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 3877 uint64_t parent_unique_id) 3878 { 3879 struct timespec now; 3880 struct icb_tag *icb; 3881 uint64_t unique_id; 3882 uint32_t fidsize, lb_num; 3883 int crclen; 3884 3885 lb_num = udf_rw32(node_icb->loc.lb_num); 3886 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 3887 icb = &efe->icbtag; 3888 3889 /* 3890 * Always use strategy type 4 unless on WORM wich we don't support 3891 * (yet). Fill in defaults and set for internal allocation of data. 3892 */ 3893 icb->strat_type = udf_rw16(4); 3894 icb->max_num_entries = udf_rw16(1); 3895 icb->file_type = file_type; /* 8 bit */ 3896 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 3897 3898 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 3899 efe->link_cnt = udf_rw16(0); /* explicit setting */ 3900 3901 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 3902 3903 vfs_timestamp(&now); 3904 udf_timespec_to_timestamp(&now, &efe->ctime); 3905 udf_timespec_to_timestamp(&now, &efe->atime); 3906 udf_timespec_to_timestamp(&now, &efe->attrtime); 3907 udf_timespec_to_timestamp(&now, &efe->mtime); 3908 3909 udf_set_regid(&efe->imp_id, IMPL_NAME); 3910 udf_add_impl_regid(ump, &efe->imp_id); 3911 3912 unique_id = udf_advance_uniqueid(ump); 3913 efe->unique_id = udf_rw64(unique_id); 3914 3915 fidsize = 0; 3916 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 3917 fidsize = udf_create_parentfid(ump, 3918 (struct fileid_desc *) efe->data, parent_icb, 3919 parent_unique_id); 3920 } 3921 3922 /* record fidlength information */ 3923 efe->obj_size = udf_rw64(fidsize); 3924 efe->inf_len = udf_rw64(fidsize); 3925 efe->l_ea = udf_rw32(0); 3926 efe->l_ad = udf_rw32(fidsize); 3927 efe->logblks_rec = udf_rw64(0); /* intern */ 3928 3929 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 3930 crclen += fidsize; 3931 efe->tag.desc_crc_len = udf_rw16(crclen); 3932 3933 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 3934 3935 return fidsize; 3936 } 3937 3938 /* --------------------------------------------------------------------- */ 3939 3940 int 3941 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 3942 struct udf_node *udf_node, struct componentname *cnp) 3943 { 3944 struct file_entry *fe = dir_node->fe; 3945 struct extfile_entry *efe = dir_node->efe; 3946 struct fileid_desc *fid; 3947 struct dirent *dirent; 3948 uint64_t file_size, diroffset; 3949 uint32_t lb_size, fidsize; 3950 int found, error; 3951 char const *name = cnp->cn_nameptr; 3952 int namelen = cnp->cn_namelen; 3953 int refcnt; 3954 3955 /* get directory filesize */ 3956 if (fe) { 3957 file_size = udf_rw64(fe->inf_len); 3958 } else { 3959 assert(efe); 3960 file_size = udf_rw64(efe->inf_len); 3961 } 3962 3963 /* allocate temporary space for fid */ 3964 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 3965 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 3966 3967 found = 0; 3968 diroffset = dir_node->last_diroffset; 3969 3970 /* 3971 * if the directory is trunced or if we have never visited it yet, 3972 * start at the end. 3973 */ 3974 if ((diroffset >= file_size) || (diroffset == 0)) { 3975 diroffset = dir_node->last_diroffset = file_size; 3976 } 3977 3978 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 3979 3980 while (!found) { 3981 /* if at the end, go trough zero */ 3982 if (diroffset >= file_size) 3983 diroffset = 0; 3984 3985 /* transfer a new fid/dirent */ 3986 error = udf_read_fid_stream(dir_node->vnode, &diroffset, 3987 fid, dirent); 3988 if (error) 3989 break; 3990 3991 /* skip deleted entries */ 3992 if ((fid->file_char & UDF_FILE_CHAR_DEL) == 0) { 3993 if ((strlen(dirent->d_name) == namelen) && 3994 (strncmp(dirent->d_name, name, namelen) == 0)) { 3995 found = 1; 3996 } 3997 } 3998 3999 if (diroffset == dir_node->last_diroffset) { 4000 /* we have cycled */ 4001 break; 4002 } 4003 } 4004 if (!found) { 4005 free(fid, M_UDFTEMP); 4006 free(dirent, M_UDFTEMP); 4007 dir_node->last_diroffset = diroffset; 4008 return ENOENT; 4009 } 4010 4011 /* mark deleted */ 4012 fid->file_char |= UDF_FILE_CHAR_DEL; 4013 #ifdef UDF_COMPLETE_DELETE 4014 memset(&fid->icb, 0, sizeof(fid->icb)); 4015 #endif 4016 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4017 4018 /* roll back last advance from udf_read_fid_stream */ 4019 fidsize = udf_fidsize(fid); 4020 diroffset -= fidsize; 4021 4022 /* write out */ 4023 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4024 fid, fidsize, diroffset, 4025 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4026 FSCRED, NULL, NULL); 4027 if (error == 0) { 4028 /* get reference count of attached node */ 4029 if (udf_node->fe) { 4030 refcnt = udf_rw16(udf_node->fe->link_cnt); 4031 } else { 4032 KASSERT(udf_node->efe); 4033 refcnt = udf_rw16(udf_node->efe->link_cnt); 4034 } 4035 #ifdef UDF_COMPLETE_DELETE 4036 /* substract reference counter in attached node */ 4037 refcnt -= 1; 4038 if (udf_node->fe) { 4039 udf_node->fe->link_cnt = udf_rw16(refcnt); 4040 } else { 4041 udf_node->efe->link_cnt = udf_rw16(refcnt); 4042 } 4043 4044 /* prevent writeout when refcnt == 0 */ 4045 if (refcnt == 0) 4046 udf_node->i_flags |= IN_DELETED; 4047 4048 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4049 int drefcnt; 4050 4051 /* substract reference counter in directory node */ 4052 /* note subtract 2 (?) for its was also backreferenced */ 4053 if (dir_node->fe) { 4054 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4055 drefcnt -= 1; 4056 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4057 } else { 4058 KASSERT(dir_node->efe); 4059 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4060 drefcnt -= 1; 4061 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4062 } 4063 } 4064 4065 udf_node->i_flags |= IN_MODIFIED; 4066 dir_node->i_flags |= IN_MODIFIED; 4067 #endif 4068 /* if it is/was a hardlink adjust the file count */ 4069 if (refcnt > 0) 4070 udf_adjust_filecount(udf_node, -1); 4071 4072 /* XXX we could restart at the deleted entry */ 4073 diroffset = 0; 4074 } 4075 4076 free(fid, M_UDFTEMP); 4077 free(dirent, M_UDFTEMP); 4078 dir_node->last_diroffset = diroffset; 4079 4080 return error; 4081 } 4082 4083 /* --------------------------------------------------------------------- */ 4084 4085 /* 4086 * We are not allowed to split the fid tag itself over an logical block so 4087 * check the space remaining in the logical block. 4088 * 4089 * We try to select the smallest candidate for recycling or when none is 4090 * found, append a new one at the end of the directory. 4091 */ 4092 4093 int 4094 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4095 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4096 { 4097 struct vnode *dvp = dir_node->vnode; 4098 struct fileid_desc *fid; 4099 struct icb_tag *icbtag; 4100 struct charspec osta_charspec; 4101 struct dirent dirent; 4102 uint64_t unique_id, dir_size, diroffset; 4103 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4104 uint32_t chosen_size, chosen_size_diff; 4105 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4106 int file_char, refcnt, icbflags, addr_type, error; 4107 4108 lb_size = udf_rw32(ump->logical_vol->lb_size); 4109 udf_osta_charset(&osta_charspec); 4110 4111 if (dir_node->fe) { 4112 dir_size = udf_rw64(dir_node->fe->inf_len); 4113 icbtag = &dir_node->fe->icbtag; 4114 } else { 4115 dir_size = udf_rw64(dir_node->efe->inf_len); 4116 icbtag = &dir_node->efe->icbtag; 4117 } 4118 4119 icbflags = udf_rw16(icbtag->flags); 4120 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4121 4122 if (udf_node->fe) { 4123 unique_id = udf_rw64(udf_node->fe->unique_id); 4124 refcnt = udf_rw16(udf_node->fe->link_cnt); 4125 } else { 4126 unique_id = udf_rw64(udf_node->efe->unique_id); 4127 refcnt = udf_rw16(udf_node->efe->link_cnt); 4128 } 4129 4130 if (refcnt > 0) { 4131 unique_id = udf_advance_uniqueid(ump); 4132 udf_adjust_filecount(udf_node, 1); 4133 } 4134 4135 4136 /* determine file characteristics */ 4137 file_char = 0; /* visible non deleted file and not stream metadata */ 4138 if (vap->va_type == VDIR) 4139 file_char = UDF_FILE_CHAR_DIR; 4140 4141 /* malloc scrap buffer */ 4142 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4143 bzero(fid, lb_size); 4144 4145 /* calculate _minimum_ fid size */ 4146 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4147 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4148 fidsize = UDF_FID_SIZE + fid->l_fi; 4149 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4150 4151 /* find position that will fit the FID */ 4152 diroffset = dir_node->last_diroffset; 4153 4154 /* 4155 * if the directory is trunced or if we have never visited it yet, 4156 * start at the end. 4157 */ 4158 if ((diroffset >= dir_size) || (diroffset == 0)) { 4159 diroffset = dir_node->last_diroffset = dir_size; 4160 } 4161 4162 chosen_fid_pos = diroffset; 4163 chosen_size = 0; 4164 chosen_size_diff = UINT_MAX; 4165 4166 for (;;) { 4167 /* if at the end, go trough zero */ 4168 if (diroffset >= dir_size) 4169 diroffset = 0; 4170 4171 /* get fid/dirent */ 4172 fid_pos = diroffset; 4173 error = udf_read_fid_stream(dvp, &diroffset, fid, &dirent); 4174 if (error) 4175 break; 4176 4177 this_fidsize = udf_fidsize(fid); 4178 4179 /* reuse deleted entries */ 4180 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4181 size_diff = this_fidsize - fidsize; 4182 end_fid_pos = fid_pos + this_fidsize; 4183 lb_rest = lb_size - (end_fid_pos % lb_size); 4184 4185 #ifndef UDF_COMPLETE_DELETE 4186 /* only reuse entries that are wiped */ 4187 /* check if the len + loc are marked zero */ 4188 if (udf_rw32(fid->icb.len != 0)) 4189 break; 4190 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4191 break; 4192 if (udf_rw16(fid->icb.loc.part_num != 0)) 4193 break; 4194 #endif 4195 /* select if not splitting the tag and its smaller */ 4196 if ((size_diff >= 0) && 4197 (size_diff < chosen_size_diff) && 4198 (lb_rest >= sizeof(struct desc_tag))) 4199 { 4200 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4201 if ((size_diff == 0) || (size_diff >= 32)) { 4202 chosen_fid_pos = fid_pos; 4203 chosen_size = this_fidsize; 4204 chosen_size_diff = size_diff; 4205 } 4206 } 4207 } 4208 4209 if (diroffset == dir_node->last_diroffset) { 4210 /* we have cycled */ 4211 break; 4212 } 4213 } 4214 /* unlikely */ 4215 if (error) { 4216 free(fid, M_TEMP); 4217 return error; 4218 } 4219 4220 /* extend directory if no other candidate found */ 4221 if (chosen_size == 0) { 4222 chosen_fid_pos = dir_size; 4223 chosen_size = fidsize; 4224 chosen_size_diff = 0; 4225 4226 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4227 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4228 /* pre-grow directory to see if we're to switch */ 4229 udf_grow_node(dir_node, dir_size + chosen_size); 4230 4231 icbflags = udf_rw16(icbtag->flags); 4232 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4233 } 4234 4235 /* make sure the next fid desc_tag won't be splitted */ 4236 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4237 end_fid_pos = chosen_fid_pos + chosen_size; 4238 lb_rest = lb_size - (end_fid_pos % lb_size); 4239 4240 /* pad with implementation use regid if needed */ 4241 if (lb_rest < sizeof(struct desc_tag)) 4242 chosen_size += 32; 4243 } 4244 } 4245 chosen_size_diff = chosen_size - fidsize; 4246 diroffset = chosen_fid_pos + chosen_size; 4247 4248 /* populate the FID */ 4249 memset(fid, 0, lb_size); 4250 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4251 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4252 fid->file_char = file_char; 4253 fid->icb = udf_node->loc; 4254 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4255 fid->l_iu = udf_rw16(0); 4256 4257 if (chosen_size > fidsize) { 4258 /* insert implementation-use regid to space it correctly */ 4259 fid->l_iu = udf_rw16(chosen_size_diff); 4260 4261 /* set implementation use */ 4262 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4263 udf_add_impl_regid(ump, (struct regid *) fid->data); 4264 } 4265 4266 /* fill in name */ 4267 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4268 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4269 4270 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4271 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4272 4273 /* writeout FID/update parent directory */ 4274 error = vn_rdwr(UIO_WRITE, dvp, 4275 fid, chosen_size, chosen_fid_pos, 4276 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4277 FSCRED, NULL, NULL); 4278 4279 if (error) { 4280 free(fid, M_TEMP); 4281 return error; 4282 } 4283 4284 /* add reference counter in attached node */ 4285 if (udf_node->fe) { 4286 refcnt = udf_rw16(udf_node->fe->link_cnt); 4287 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 4288 } else { 4289 KASSERT(udf_node->efe); 4290 refcnt = udf_rw16(udf_node->efe->link_cnt); 4291 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 4292 } 4293 4294 /* mark not deleted if it was... just in case, but do warn */ 4295 if (udf_node->i_flags & IN_DELETED) { 4296 printf("udf: warning, marking a file undeleted\n"); 4297 udf_node->i_flags &= ~IN_DELETED; 4298 } 4299 4300 if (file_char & UDF_FILE_CHAR_DIR) { 4301 /* add reference counter in directory node for '..' */ 4302 if (dir_node->fe) { 4303 refcnt = udf_rw16(dir_node->fe->link_cnt); 4304 refcnt++; 4305 dir_node->fe->link_cnt = udf_rw16(refcnt); 4306 } else { 4307 KASSERT(dir_node->efe); 4308 refcnt = udf_rw16(dir_node->efe->link_cnt); 4309 refcnt++; 4310 dir_node->efe->link_cnt = udf_rw16(refcnt); 4311 } 4312 } 4313 4314 /* update our last position so we dont have to cycle again and again */ 4315 dir_node->last_diroffset = diroffset; 4316 4317 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 4318 /* VN_KNOTE(udf_node, ...) */ 4319 udf_update(udf_node->vnode, NULL, NULL, 0); 4320 4321 free(fid, M_TEMP); 4322 4323 return 0; 4324 } 4325 4326 /* --------------------------------------------------------------------- */ 4327 4328 /* 4329 * Each node can have an attached streamdir node though not recursively. These 4330 * are otherwise known as named substreams/named extended attributes that have 4331 * no size limitations. 4332 * 4333 * `Normal' extended attributes are indicated with a number and are recorded 4334 * in either the fe/efe descriptor itself for small descriptors or recorded in 4335 * the attached extended attribute file. Since these spaces can get 4336 * fragmented, care ought to be taken. 4337 * 4338 * Since the size of the space reserved for allocation descriptors is limited, 4339 * there is a mechanim provided for extending this space; this is done by a 4340 * special extent to allow schrinking of the allocations without breaking the 4341 * linkage to the allocation extent descriptor. 4342 */ 4343 4344 int 4345 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 4346 struct udf_node **udf_noderes) 4347 { 4348 union dscrptr *dscr; 4349 struct udf_node *udf_node; 4350 struct vnode *nvp; 4351 struct long_ad icb_loc, last_fe_icb_loc; 4352 uint64_t file_size; 4353 uint32_t lb_size, sector, dummy; 4354 uint8_t *file_data; 4355 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 4356 int slot, eof, error; 4357 4358 DPRINTF(NODE, ("udf_get_node called\n")); 4359 *udf_noderes = udf_node = NULL; 4360 4361 /* lock to disallow simultanious creation of same udf_node */ 4362 mutex_enter(&ump->get_node_lock); 4363 4364 DPRINTF(NODE, ("\tlookup in hash table\n")); 4365 /* lookup in hash table */ 4366 assert(ump); 4367 assert(node_icb_loc); 4368 udf_node = udf_hash_lookup(ump, node_icb_loc); 4369 if (udf_node) { 4370 DPRINTF(NODE, ("\tgot it from the hash!\n")); 4371 /* vnode is returned locked */ 4372 *udf_noderes = udf_node; 4373 mutex_exit(&ump->get_node_lock); 4374 return 0; 4375 } 4376 4377 /* garbage check: translate udf_node_icb_loc to sectornr */ 4378 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 4379 if (error) { 4380 /* no use, this will fail anyway */ 4381 mutex_exit(&ump->get_node_lock); 4382 return EINVAL; 4383 } 4384 4385 /* build udf_node (do initialise!) */ 4386 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4387 memset(udf_node, 0, sizeof(struct udf_node)); 4388 4389 DPRINTF(NODE, ("\tget new vnode\n")); 4390 /* give it a vnode */ 4391 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 4392 if (error) { 4393 pool_put(&udf_node_pool, udf_node); 4394 mutex_exit(&ump->get_node_lock); 4395 return error; 4396 } 4397 4398 /* always return locked vnode */ 4399 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 4400 /* recycle vnode and unlock; simultanious will fail too */ 4401 ungetnewvnode(nvp); 4402 mutex_exit(&ump->get_node_lock); 4403 return error; 4404 } 4405 4406 /* initialise crosslinks, note location of fe/efe for hashing */ 4407 udf_node->ump = ump; 4408 udf_node->vnode = nvp; 4409 nvp->v_data = udf_node; 4410 udf_node->loc = *node_icb_loc; 4411 udf_node->lockf = 0; 4412 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4413 cv_init(&udf_node->node_lock, "udf_nlk"); 4414 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 4415 udf_node->outstanding_bufs = 0; 4416 udf_node->outstanding_nodedscr = 0; 4417 4418 /* insert into the hash lookup */ 4419 udf_register_node(udf_node); 4420 4421 /* safe to unlock, the entry is in the hash table, vnode is locked */ 4422 mutex_exit(&ump->get_node_lock); 4423 4424 icb_loc = *node_icb_loc; 4425 needs_indirect = 0; 4426 strat4096 = 0; 4427 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 4428 file_size = 0; 4429 file_data = NULL; 4430 lb_size = udf_rw32(ump->logical_vol->lb_size); 4431 4432 DPRINTF(NODE, ("\tstart reading descriptors\n")); 4433 do { 4434 /* try to read in fe/efe */ 4435 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4436 4437 /* blank sector marks end of sequence, check this */ 4438 if ((dscr == NULL) && (!strat4096)) 4439 error = ENOENT; 4440 4441 /* break if read error or blank sector */ 4442 if (error || (dscr == NULL)) 4443 break; 4444 4445 /* process descriptor based on the descriptor type */ 4446 dscr_type = udf_rw16(dscr->tag.id); 4447 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 4448 4449 /* if dealing with an indirect entry, follow the link */ 4450 if (dscr_type == TAGID_INDIRECTENTRY) { 4451 needs_indirect = 0; 4452 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4453 icb_loc = dscr->inde.indirect_icb; 4454 continue; 4455 } 4456 4457 /* only file entries and extended file entries allowed here */ 4458 if ((dscr_type != TAGID_FENTRY) && 4459 (dscr_type != TAGID_EXTFENTRY)) { 4460 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4461 error = ENOENT; 4462 break; 4463 } 4464 4465 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 4466 4467 /* choose this one */ 4468 last_fe_icb_loc = icb_loc; 4469 4470 /* record and process/update (ext)fentry */ 4471 file_data = NULL; 4472 if (dscr_type == TAGID_FENTRY) { 4473 if (udf_node->fe) 4474 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4475 udf_node->fe); 4476 udf_node->fe = &dscr->fe; 4477 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 4478 udf_file_type = udf_node->fe->icbtag.file_type; 4479 file_size = udf_rw64(udf_node->fe->inf_len); 4480 file_data = udf_node->fe->data; 4481 } else { 4482 if (udf_node->efe) 4483 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4484 udf_node->efe); 4485 udf_node->efe = &dscr->efe; 4486 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 4487 udf_file_type = udf_node->efe->icbtag.file_type; 4488 file_size = udf_rw64(udf_node->efe->inf_len); 4489 file_data = udf_node->efe->data; 4490 } 4491 4492 /* check recording strategy (structure) */ 4493 4494 /* 4495 * Strategy 4096 is a daisy linked chain terminating with an 4496 * unrecorded sector or a TERM descriptor. The next 4497 * descriptor is to be found in the sector that follows the 4498 * current sector. 4499 */ 4500 if (strat == 4096) { 4501 strat4096 = 1; 4502 needs_indirect = 1; 4503 4504 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 4505 } 4506 4507 /* 4508 * Strategy 4 is the normal strategy and terminates, but if 4509 * we're in strategy 4096, we can't have strategy 4 mixed in 4510 */ 4511 4512 if (strat == 4) { 4513 if (strat4096) { 4514 error = EINVAL; 4515 break; 4516 } 4517 break; /* done */ 4518 } 4519 } while (!error); 4520 4521 /* first round of cleanup code */ 4522 if (error) { 4523 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 4524 /* recycle udf_node */ 4525 udf_dispose_node(udf_node); 4526 4527 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4528 nvp->v_data = NULL; 4529 ungetnewvnode(nvp); 4530 4531 return EINVAL; /* error code ok? */ 4532 } 4533 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 4534 4535 /* assert no references to dscr anymore beyong this point */ 4536 assert((udf_node->fe) || (udf_node->efe)); 4537 dscr = NULL; 4538 4539 /* 4540 * Remember where to record an updated version of the descriptor. If 4541 * there is a sequence of indirect entries, icb_loc will have been 4542 * updated. Its the write disipline to allocate new space and to make 4543 * sure the chain is maintained. 4544 * 4545 * `needs_indirect' flags if the next location is to be filled with 4546 * with an indirect entry. 4547 */ 4548 udf_node->write_loc = icb_loc; 4549 udf_node->needs_indirect = needs_indirect; 4550 4551 /* 4552 * Go trough all allocations extents of this descriptor and when 4553 * encountering a redirect read in the allocation extension. These are 4554 * daisy-chained. 4555 */ 4556 UDF_LOCK_NODE(udf_node, 0); 4557 udf_node->num_extensions = 0; 4558 4559 error = 0; 4560 slot = 0; 4561 for (;;) { 4562 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 4563 if (eof) 4564 break; 4565 4566 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) { 4567 slot++; 4568 continue; 4569 } 4570 4571 DPRINTF(NODE, ("\tgot redirect extent\n")); 4572 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 4573 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 4574 "too many allocation extensions on " 4575 "udf_node\n")); 4576 error = EINVAL; 4577 break; 4578 } 4579 4580 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 4581 if (udf_rw32(icb_loc.len) != lb_size) { 4582 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 4583 "extension size in udf_node\n")); 4584 error = EINVAL; 4585 break; 4586 } 4587 4588 /* load in allocation extent */ 4589 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4590 if (error || (dscr == NULL)) 4591 break; 4592 4593 /* process read-in descriptor */ 4594 dscr_type = udf_rw16(dscr->tag.id); 4595 4596 if (dscr_type != TAGID_ALLOCEXTENT) { 4597 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4598 error = ENOENT; 4599 break; 4600 } 4601 4602 DPRINTF(NODE, ("\trecording redirect extent\n")); 4603 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 4604 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 4605 4606 udf_node->num_extensions++; 4607 4608 } /* while */ 4609 UDF_UNLOCK_NODE(udf_node, 0); 4610 4611 /* second round of cleanup code */ 4612 if (error) { 4613 /* recycle udf_node */ 4614 udf_dispose_node(udf_node); 4615 4616 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4617 nvp->v_data = NULL; 4618 ungetnewvnode(nvp); 4619 4620 return EINVAL; /* error code ok? */ 4621 } 4622 4623 DPRINTF(NODE, ("\tnode read in fine\n")); 4624 4625 /* 4626 * Translate UDF filetypes into vnode types. 4627 * 4628 * Systemfiles like the meta main and mirror files are not treated as 4629 * normal files, so we type them as having no type. UDF dictates that 4630 * they are not allowed to be visible. 4631 */ 4632 4633 switch (udf_file_type) { 4634 case UDF_ICB_FILETYPE_DIRECTORY : 4635 case UDF_ICB_FILETYPE_STREAMDIR : 4636 nvp->v_type = VDIR; 4637 break; 4638 case UDF_ICB_FILETYPE_BLOCKDEVICE : 4639 nvp->v_type = VBLK; 4640 break; 4641 case UDF_ICB_FILETYPE_CHARDEVICE : 4642 nvp->v_type = VCHR; 4643 break; 4644 case UDF_ICB_FILETYPE_SOCKET : 4645 nvp->v_type = VSOCK; 4646 break; 4647 case UDF_ICB_FILETYPE_FIFO : 4648 nvp->v_type = VFIFO; 4649 break; 4650 case UDF_ICB_FILETYPE_SYMLINK : 4651 nvp->v_type = VLNK; 4652 break; 4653 case UDF_ICB_FILETYPE_VAT : 4654 case UDF_ICB_FILETYPE_META_MAIN : 4655 case UDF_ICB_FILETYPE_META_MIRROR : 4656 nvp->v_type = VNON; 4657 break; 4658 case UDF_ICB_FILETYPE_RANDOMACCESS : 4659 case UDF_ICB_FILETYPE_REALTIME : 4660 nvp->v_type = VREG; 4661 break; 4662 default: 4663 /* YIKES, something else */ 4664 nvp->v_type = VNON; 4665 } 4666 4667 /* TODO specfs, fifofs etc etc. vnops setting */ 4668 4669 /* don't forget to set vnode's v_size */ 4670 uvm_vnp_setsize(nvp, file_size); 4671 4672 /* TODO ext attr and streamdir udf_nodes */ 4673 4674 *udf_noderes = udf_node; 4675 4676 return 0; 4677 } 4678 4679 /* --------------------------------------------------------------------- */ 4680 4681 4682 /* TODO !!!!! writeout alloc_ext_entry's!!! */ 4683 int 4684 udf_writeout_node(struct udf_node *udf_node, int waitfor) 4685 { 4686 union dscrptr *dscr; 4687 struct long_ad *loc; 4688 int error; 4689 4690 DPRINTF(NODE, ("udf_writeout_node called\n")); 4691 4692 KASSERT(udf_node->outstanding_bufs == 0); 4693 KASSERT(udf_node->outstanding_nodedscr == 0); 4694 4695 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 4696 4697 if (udf_node->i_flags & IN_DELETED) { 4698 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 4699 return 0; 4700 } 4701 4702 /* we're going to write out the descriptor so clear the flags */ 4703 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 4704 4705 if (udf_node->fe) { 4706 dscr = (union dscrptr *) udf_node->fe; 4707 } else { 4708 KASSERT(udf_node->efe); 4709 dscr = (union dscrptr *) udf_node->efe; 4710 } 4711 KASSERT(dscr); 4712 4713 loc = &udf_node->write_loc; 4714 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 4715 return error; 4716 } 4717 4718 /* --------------------------------------------------------------------- */ 4719 4720 int 4721 udf_dispose_node(struct udf_node *udf_node) 4722 { 4723 struct vnode *vp; 4724 4725 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 4726 if (!udf_node) { 4727 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 4728 return 0; 4729 } 4730 4731 vp = udf_node->vnode; 4732 #ifdef DIAGNOSTIC 4733 if (vp->v_numoutput) 4734 panic("disposing UDF node with pending I/O's, udf_node = %p, " 4735 "v_numoutput = %d", udf_node, vp->v_numoutput); 4736 #endif 4737 4738 /* wait until out of sync (just in case we happen to stumble over one */ 4739 KASSERT(!mutex_owned(&mntvnode_lock)); 4740 mutex_enter(&mntvnode_lock); 4741 while (udf_node->i_flags & IN_SYNCED) { 4742 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 4743 hz/16); 4744 } 4745 mutex_exit(&mntvnode_lock); 4746 4747 /* TODO extended attributes and streamdir */ 4748 4749 /* remove from our hash lookup table */ 4750 udf_deregister_node(udf_node); 4751 4752 /* destroy our lock */ 4753 mutex_destroy(&udf_node->node_mutex); 4754 cv_destroy(&udf_node->node_lock); 4755 4756 /* dissociate our udf_node from the vnode */ 4757 genfs_node_destroy(udf_node->vnode); 4758 vp->v_data = NULL; 4759 4760 /* free associated memory and the node itself */ 4761 if (udf_node->fe) 4762 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, udf_node->fe); 4763 if (udf_node->efe) 4764 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, udf_node->efe); 4765 4766 udf_node->fe = (void *) 0xdeadaaaa; 4767 udf_node->efe = (void *) 0xdeadbbbb; 4768 udf_node->ump = (void *) 0xdeadbeef; 4769 pool_put(&udf_node_pool, udf_node); 4770 4771 return 0; 4772 } 4773 4774 4775 4776 /* 4777 * create a new node using the specified vnodeops, vap and cnp but with the 4778 * udf_file_type. This allows special files to be created. Use with care. 4779 */ 4780 4781 static int 4782 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 4783 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 4784 { 4785 union dscrptr *dscr; 4786 struct udf_node *dir_node = VTOI(dvp);; 4787 struct udf_node *udf_node; 4788 struct udf_mount *ump = dir_node->ump; 4789 struct vnode *nvp; 4790 struct long_ad node_icb_loc; 4791 uint64_t parent_unique_id; 4792 uint64_t lmapping, pmapping; 4793 uint32_t lb_size, lb_num; 4794 uint16_t vpart_num; 4795 int fid_size, error; 4796 4797 lb_size = udf_rw32(ump->logical_vol->lb_size); 4798 *vpp = NULL; 4799 4800 /* allocate vnode */ 4801 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 4802 if (error) 4803 return error; 4804 4805 /* lock node */ 4806 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 4807 if (error) { 4808 nvp->v_data = NULL; 4809 ungetnewvnode(nvp); 4810 return error; 4811 } 4812 4813 /* get disc allocation for one logical block */ 4814 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 4815 &vpart_num, &lmapping, &pmapping); 4816 lb_num = lmapping; 4817 if (error) { 4818 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4819 ungetnewvnode(nvp); 4820 return error; 4821 } 4822 4823 /* initialise pointer to location */ 4824 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 4825 node_icb_loc.len = lb_size; 4826 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 4827 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 4828 4829 /* build udf_node (do initialise!) */ 4830 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4831 memset(udf_node, 0, sizeof(struct udf_node)); 4832 4833 /* initialise crosslinks, note location of fe/efe for hashing */ 4834 /* bugalert: synchronise with udf_get_node() */ 4835 udf_node->ump = ump; 4836 udf_node->vnode = nvp; 4837 nvp->v_data = udf_node; 4838 udf_node->loc = node_icb_loc; 4839 udf_node->write_loc = node_icb_loc; 4840 udf_node->lockf = 0; 4841 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4842 cv_init(&udf_node->node_lock, "udf_nlk"); 4843 udf_node->outstanding_bufs = 0; 4844 udf_node->outstanding_nodedscr = 0; 4845 4846 /* initialise genfs */ 4847 genfs_node_init(nvp, &udf_genfsops); 4848 4849 /* insert into the hash lookup */ 4850 udf_register_node(udf_node); 4851 4852 /* get parent's unique ID for refering '..' if its a directory */ 4853 if (dir_node->fe) { 4854 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 4855 } else { 4856 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 4857 } 4858 4859 /* get descriptor */ 4860 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 4861 4862 /* choose a fe or an efe for it */ 4863 if (ump->logical_vol->tag.descriptor_ver == 2) { 4864 udf_node->fe = &dscr->fe; 4865 fid_size = udf_create_new_fe(ump, udf_node->fe, 4866 udf_file_type, &udf_node->loc, 4867 &dir_node->loc, parent_unique_id); 4868 /* TODO add extended attribute for creation time */ 4869 } else { 4870 udf_node->efe = &dscr->efe; 4871 fid_size = udf_create_new_efe(ump, udf_node->efe, 4872 udf_file_type, &udf_node->loc, 4873 &dir_node->loc, parent_unique_id); 4874 } 4875 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 4876 4877 /* update vnode's size and type */ 4878 nvp->v_type = vap->va_type; 4879 uvm_vnp_setsize(nvp, fid_size); 4880 4881 /* set access mode */ 4882 udf_setaccessmode(udf_node, vap->va_mode); 4883 4884 /* set ownership */ 4885 udf_setownership(udf_node, vap->va_uid, vap->va_gid); 4886 4887 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 4888 if (error) { 4889 /* free disc allocation for node */ 4890 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 4891 4892 /* recycle udf_node */ 4893 udf_dispose_node(udf_node); 4894 vput(nvp); 4895 4896 *vpp = NULL; 4897 return error; 4898 } 4899 4900 /* adjust file count */ 4901 udf_adjust_filecount(udf_node, 1); 4902 4903 /* return result */ 4904 *vpp = nvp; 4905 4906 return 0; 4907 } 4908 4909 4910 int 4911 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 4912 struct componentname *cnp) 4913 { 4914 int (**vnodeops)(void *); 4915 int udf_file_type; 4916 4917 DPRINTF(NODE, ("udf_create_node called\n")); 4918 4919 /* what type are we creating ? */ 4920 vnodeops = udf_vnodeop_p; 4921 /* start with a default */ 4922 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 4923 4924 *vpp = NULL; 4925 4926 switch (vap->va_type) { 4927 case VREG : 4928 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 4929 break; 4930 case VDIR : 4931 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 4932 break; 4933 case VLNK : 4934 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 4935 break; 4936 case VBLK : 4937 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 4938 /* specfs */ 4939 return ENOTSUP; 4940 break; 4941 case VCHR : 4942 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 4943 /* specfs */ 4944 return ENOTSUP; 4945 break; 4946 case VFIFO : 4947 udf_file_type = UDF_ICB_FILETYPE_FIFO; 4948 /* specfs */ 4949 return ENOTSUP; 4950 break; 4951 case VSOCK : 4952 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 4953 /* specfs */ 4954 return ENOTSUP; 4955 break; 4956 case VNON : 4957 case VBAD : 4958 default : 4959 /* nothing; can we even create these? */ 4960 return EINVAL; 4961 } 4962 4963 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 4964 } 4965 4966 /* --------------------------------------------------------------------- */ 4967 4968 static void 4969 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 4970 { 4971 struct udf_mount *ump = udf_node->ump; 4972 uint32_t lb_size, lb_num, len, num_lb; 4973 uint16_t vpart_num; 4974 4975 /* is there really one? */ 4976 if (mem == NULL) 4977 return; 4978 4979 /* got a descriptor here */ 4980 len = udf_rw32(loc->len); 4981 lb_num = udf_rw32(loc->loc.lb_num); 4982 vpart_num = udf_rw16(loc->loc.part_num); 4983 4984 lb_size = udf_rw32(ump->logical_vol->lb_size); 4985 num_lb = (len + lb_size -1) / lb_size; 4986 4987 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 4988 } 4989 4990 void 4991 udf_delete_node(struct udf_node *udf_node) 4992 { 4993 void *dscr; 4994 struct udf_mount *ump; 4995 struct long_ad *loc; 4996 int extnr, lvint, dummy; 4997 4998 ump = udf_node->ump; 4999 5000 /* paranoia check on integrity; should be open!; we could panic */ 5001 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5002 if (lvint == UDF_INTEGRITY_CLOSED) 5003 printf("\tIntegrity was CLOSED!\n"); 5004 5005 /* whatever the node type, change its size to zero */ 5006 (void) udf_resize_node(udf_node, 0, &dummy); 5007 5008 /* force it to be `clean'; no use writing it out */ 5009 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5010 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5011 5012 /* adjust file count */ 5013 udf_adjust_filecount(udf_node, -1); 5014 5015 /* 5016 * Free its allocated descriptors; memory will be released when 5017 * vop_reclaim() is called. 5018 */ 5019 loc = &udf_node->loc; 5020 5021 dscr = udf_node->fe; 5022 udf_free_descriptor_space(udf_node, loc, dscr); 5023 dscr = udf_node->efe; 5024 udf_free_descriptor_space(udf_node, loc, dscr); 5025 5026 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5027 dscr = udf_node->ext[extnr]; 5028 loc = &udf_node->ext_loc[extnr]; 5029 udf_free_descriptor_space(udf_node, loc, dscr); 5030 } 5031 } 5032 5033 /* --------------------------------------------------------------------- */ 5034 5035 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5036 int 5037 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5038 { 5039 struct file_entry *fe = udf_node->fe; 5040 struct extfile_entry *efe = udf_node->efe; 5041 uint64_t file_size; 5042 int error; 5043 5044 if (fe) { 5045 file_size = udf_rw64(fe->inf_len); 5046 } else { 5047 assert(udf_node->efe); 5048 file_size = udf_rw64(efe->inf_len); 5049 } 5050 5051 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5052 file_size, new_size)); 5053 5054 /* if not changing, we're done */ 5055 if (file_size == new_size) 5056 return 0; 5057 5058 *extended = (new_size > file_size); 5059 if (*extended) { 5060 error = udf_grow_node(udf_node, new_size); 5061 } else { 5062 error = udf_shrink_node(udf_node, new_size); 5063 } 5064 5065 return error; 5066 } 5067 5068 5069 /* --------------------------------------------------------------------- */ 5070 5071 void 5072 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5073 struct timespec *mod, struct timespec *changed) 5074 { 5075 struct timespec now; 5076 struct file_entry *fe; 5077 struct extfile_entry *efe; 5078 struct timestamp *atime, *mtime, *attrtime; 5079 5080 /* protect against rogue values */ 5081 if (!udf_node) 5082 return; 5083 5084 fe = udf_node->fe; 5085 efe = udf_node->efe; 5086 5087 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5088 return; 5089 5090 /* get descriptor information */ 5091 if (fe) { 5092 atime = &fe->atime; 5093 mtime = &fe->mtime; 5094 attrtime = &fe->attrtime; 5095 } else { 5096 assert(udf_node->efe); 5097 atime = &efe->atime; 5098 mtime = &efe->mtime; 5099 attrtime = &efe->attrtime; 5100 } 5101 5102 vfs_timestamp(&now); 5103 5104 /* set access time */ 5105 if (udf_node->i_flags & IN_ACCESS) { 5106 if (acc == NULL) 5107 acc = &now; 5108 udf_timespec_to_timestamp(acc, atime); 5109 } 5110 5111 /* set modification time */ 5112 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5113 if (mod == NULL) 5114 mod = &now; 5115 udf_timespec_to_timestamp(mod, mtime); 5116 } 5117 5118 /* set change time */ 5119 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) { 5120 if (changed == NULL) 5121 changed = &now; 5122 udf_timespec_to_timestamp(changed, attrtime); 5123 } 5124 5125 /* notify updates to the node itself */ 5126 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5127 udf_node->i_flags |= IN_ACCESSED; 5128 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5129 udf_node->i_flags |= IN_MODIFIED; 5130 5131 /* clear modification flags */ 5132 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5133 } 5134 5135 /* --------------------------------------------------------------------- */ 5136 5137 int 5138 udf_update(struct vnode *vp, struct timespec *acc, 5139 struct timespec *mod, int updflags) 5140 { 5141 struct udf_node *udf_node = VTOI(vp); 5142 struct udf_mount *ump = udf_node->ump; 5143 struct regid *impl_id; 5144 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5145 int waitfor, flags; 5146 5147 #ifdef DEBUG 5148 char bits[128]; 5149 DPRINTF(CALL, ("udf_update(node, %p, %p, %d)\n", acc, mod, updflags)); 5150 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5151 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5152 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5153 #endif 5154 5155 /* set our times */ 5156 udf_itimes(udf_node, acc, mod, NULL); 5157 5158 /* set our implementation id */ 5159 if (udf_node->fe) { 5160 impl_id = &udf_node->fe->imp_id; 5161 } else { 5162 impl_id = &udf_node->efe->imp_id; 5163 } 5164 udf_set_regid(impl_id, IMPL_NAME); 5165 udf_add_impl_regid(ump, impl_id); 5166 5167 /* if called when mounted readonly, never write back */ 5168 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5169 return 0; 5170 5171 /* check if the node is dirty 'enough'*/ 5172 if (updflags & UPDATE_CLOSE) { 5173 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5174 } else { 5175 flags = udf_node->i_flags & IN_MODIFIED; 5176 } 5177 if (flags == 0) 5178 return 0; 5179 5180 /* determine if we need to write sync or async */ 5181 waitfor = 0; 5182 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5183 /* sync mounted */ 5184 waitfor = updflags & UPDATE_WAIT; 5185 if (updflags & UPDATE_DIROP) 5186 waitfor |= UPDATE_WAIT; 5187 } 5188 if (waitfor) 5189 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5190 5191 return 0; 5192 } 5193 5194 5195 /* --------------------------------------------------------------------- */ 5196 5197 /* 5198 * Read one fid and process it into a dirent and advance to the next (*fid) 5199 * has to be allocated a logical block in size, (*dirent) struct dirent length 5200 */ 5201 5202 int 5203 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5204 struct fileid_desc *fid, struct dirent *dirent) 5205 { 5206 struct udf_node *dir_node = VTOI(vp); 5207 struct udf_mount *ump = dir_node->ump; 5208 struct file_entry *fe = dir_node->fe; 5209 struct extfile_entry *efe = dir_node->efe; 5210 uint32_t fid_size, lb_size; 5211 uint64_t file_size; 5212 char *fid_name; 5213 int enough, error; 5214 5215 assert(fid); 5216 assert(dirent); 5217 assert(dir_node); 5218 assert(offset); 5219 assert(*offset != 1); 5220 5221 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5222 /* check if we're past the end of the directory */ 5223 if (fe) { 5224 file_size = udf_rw64(fe->inf_len); 5225 } else { 5226 assert(dir_node->efe); 5227 file_size = udf_rw64(efe->inf_len); 5228 } 5229 if (*offset >= file_size) 5230 return EINVAL; 5231 5232 /* get maximum length of FID descriptor */ 5233 lb_size = udf_rw32(ump->logical_vol->lb_size); 5234 5235 /* initialise return values */ 5236 fid_size = 0; 5237 memset(dirent, 0, sizeof(struct dirent)); 5238 memset(fid, 0, lb_size); 5239 5240 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5241 if (!enough) { 5242 /* short dir ... */ 5243 return EIO; 5244 } 5245 5246 error = vn_rdwr(UIO_READ, vp, 5247 fid, MIN(file_size - (*offset), lb_size), *offset, 5248 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5249 NULL, NULL); 5250 if (error) 5251 return error; 5252 5253 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5254 /* 5255 * Check if we got a whole descriptor. 5256 * TODO Try to `resync' directory stream when something is very wrong. 5257 */ 5258 5259 /* check if our FID header is OK */ 5260 error = udf_check_tag(fid); 5261 if (error) { 5262 goto brokendir; 5263 } 5264 DPRINTF(FIDS, ("\ttag check ok\n")); 5265 5266 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5267 error = EIO; 5268 goto brokendir; 5269 } 5270 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5271 5272 /* check for length */ 5273 fid_size = udf_fidsize(fid); 5274 enough = (file_size - (*offset) >= fid_size); 5275 if (!enough) { 5276 error = EIO; 5277 goto brokendir; 5278 } 5279 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5280 5281 /* check FID contents */ 5282 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5283 brokendir: 5284 if (error) { 5285 /* note that is sometimes a bit quick to report */ 5286 printf("BROKEN DIRECTORY ENTRY\n"); 5287 /* RESYNC? */ 5288 /* TODO: use udf_resync_fid_stream */ 5289 return EIO; 5290 } 5291 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5292 5293 /* we got a whole and valid descriptor! */ 5294 DPRINTF(FIDS, ("\tinterpret FID\n")); 5295 5296 /* create resulting dirent structure */ 5297 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5298 udf_to_unix_name(dirent->d_name, 5299 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5300 5301 /* '..' has no name, so provide one */ 5302 if (fid->file_char & UDF_FILE_CHAR_PAR) 5303 strcpy(dirent->d_name, ".."); 5304 5305 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5306 dirent->d_namlen = strlen(dirent->d_name); 5307 dirent->d_reclen = _DIRENT_SIZE(dirent); 5308 5309 /* 5310 * Note that its not worth trying to go for the filetypes now... its 5311 * too expensive too 5312 */ 5313 dirent->d_type = DT_UNKNOWN; 5314 5315 /* initial guess for filetype we can make */ 5316 if (fid->file_char & UDF_FILE_CHAR_DIR) 5317 dirent->d_type = DT_DIR; 5318 5319 /* advance */ 5320 *offset += fid_size; 5321 5322 return error; 5323 } 5324 5325 5326 /* --------------------------------------------------------------------- */ 5327 5328 static void 5329 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5330 int pass, int *ndirty) 5331 { 5332 struct udf_node *udf_node, *n_udf_node; 5333 struct vnode *vp; 5334 int vdirty, error; 5335 int on_type, on_flags, on_vnode; 5336 5337 derailed: 5338 KASSERT(mutex_owned(&mntvnode_lock)); 5339 5340 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 5341 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 5342 for (;udf_node; udf_node = n_udf_node) { 5343 DPRINTF(SYNC, (".")); 5344 5345 udf_node->i_flags &= ~IN_SYNCED; 5346 vp = udf_node->vnode; 5347 5348 mutex_enter(&vp->v_interlock); 5349 n_udf_node = LIST_NEXT(udf_node, sortchain); 5350 if (n_udf_node) 5351 n_udf_node->i_flags |= IN_SYNCED; 5352 5353 /* system nodes are not synced this way */ 5354 if (vp->v_vflag & VV_SYSTEM) { 5355 mutex_exit(&vp->v_interlock); 5356 continue; 5357 } 5358 5359 /* check if its dirty enough to even try */ 5360 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 5361 on_flags = ((udf_node->i_flags & 5362 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 5363 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 5364 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 5365 if (on_type || (on_flags || on_vnode)) { /* XXX */ 5366 /* not dirty (enough?) */ 5367 mutex_exit(&vp->v_interlock); 5368 continue; 5369 } 5370 5371 mutex_exit(&mntvnode_lock); 5372 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 5373 if (error) { 5374 mutex_enter(&mntvnode_lock); 5375 if (error == ENOENT) 5376 goto derailed; 5377 *ndirty += 1; 5378 continue; 5379 } 5380 5381 switch (pass) { 5382 case 1: 5383 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 5384 break; 5385 case 2: 5386 vdirty = vp->v_numoutput; 5387 if (vp->v_tag == VT_UDF) 5388 vdirty += udf_node->outstanding_bufs + 5389 udf_node->outstanding_nodedscr; 5390 if (vdirty == 0) 5391 VOP_FSYNC(vp, cred, 0,0,0); 5392 *ndirty += vdirty; 5393 break; 5394 case 3: 5395 vdirty = vp->v_numoutput; 5396 if (vp->v_tag == VT_UDF) 5397 vdirty += udf_node->outstanding_bufs + 5398 udf_node->outstanding_nodedscr; 5399 *ndirty += vdirty; 5400 break; 5401 } 5402 5403 vput(vp); 5404 mutex_enter(&mntvnode_lock); 5405 } 5406 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 5407 } 5408 5409 5410 void 5411 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 5412 { 5413 int dummy, ndirty; 5414 5415 mutex_enter(&mntvnode_lock); 5416 recount: 5417 dummy = 0; 5418 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5419 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5420 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 5421 5422 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5423 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5424 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 5425 5426 if (waitfor == MNT_WAIT) { 5427 ndirty = ump->devvp->v_numoutput; 5428 DPRINTF(NODE, ("counting pending blocks: on devvp %d\n", 5429 ndirty)); 5430 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 5431 DPRINTF(NODE, ("counted num dirty pending blocks %d\n", 5432 ndirty)); 5433 5434 if (ndirty) { 5435 /* 1/4 second wait */ 5436 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 5437 hz/4); 5438 goto recount; 5439 } 5440 } 5441 5442 mutex_exit(&mntvnode_lock); 5443 } 5444 5445 /* --------------------------------------------------------------------- */ 5446 5447 /* 5448 * Read and write file extent in/from the buffer. 5449 * 5450 * The splitup of the extent into seperate request-buffers is to minimise 5451 * copying around as much as possible. 5452 * 5453 * block based file reading and writing 5454 */ 5455 5456 static int 5457 udf_read_internal(struct udf_node *node, uint8_t *blob) 5458 { 5459 struct udf_mount *ump; 5460 struct file_entry *fe = node->fe; 5461 struct extfile_entry *efe = node->efe; 5462 uint64_t inflen; 5463 uint32_t sector_size; 5464 uint8_t *pos; 5465 int icbflags, addr_type; 5466 5467 /* get extent and do some paranoia checks */ 5468 ump = node->ump; 5469 sector_size = ump->discinfo.sector_size; 5470 5471 if (fe) { 5472 inflen = udf_rw64(fe->inf_len); 5473 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5474 icbflags = udf_rw16(fe->icbtag.flags); 5475 } else { 5476 assert(node->efe); 5477 inflen = udf_rw64(efe->inf_len); 5478 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5479 icbflags = udf_rw16(efe->icbtag.flags); 5480 } 5481 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5482 5483 assert(addr_type == UDF_ICB_INTERN_ALLOC); 5484 assert(inflen < sector_size); 5485 5486 /* copy out info */ 5487 memset(blob, 0, sector_size); 5488 memcpy(blob, pos, inflen); 5489 5490 return 0; 5491 } 5492 5493 5494 static int 5495 udf_write_internal(struct udf_node *node, uint8_t *blob) 5496 { 5497 struct udf_mount *ump; 5498 struct file_entry *fe = node->fe; 5499 struct extfile_entry *efe = node->efe; 5500 uint64_t inflen; 5501 uint32_t sector_size; 5502 uint8_t *pos; 5503 int icbflags, addr_type; 5504 5505 /* get extent and do some paranoia checks */ 5506 ump = node->ump; 5507 sector_size = ump->discinfo.sector_size; 5508 5509 if (fe) { 5510 inflen = udf_rw64(fe->inf_len); 5511 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5512 icbflags = udf_rw16(fe->icbtag.flags); 5513 } else { 5514 assert(node->efe); 5515 inflen = udf_rw64(efe->inf_len); 5516 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5517 icbflags = udf_rw16(efe->icbtag.flags); 5518 } 5519 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5520 5521 assert(addr_type == UDF_ICB_INTERN_ALLOC); 5522 assert(inflen < sector_size); 5523 5524 /* copy in blob */ 5525 /* memset(pos, 0, inflen); */ 5526 memcpy(pos, blob, inflen); 5527 5528 return 0; 5529 } 5530 5531 5532 void 5533 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 5534 { 5535 struct buf *nestbuf; 5536 struct udf_mount *ump = udf_node->ump; 5537 uint64_t *mapping; 5538 uint64_t run_start; 5539 uint32_t sector_size; 5540 uint32_t buf_offset, sector, rbuflen, rblk; 5541 uint32_t from, lblkno; 5542 uint32_t sectors; 5543 uint8_t *buf_pos; 5544 int error, run_length, isdir, what; 5545 5546 sector_size = udf_node->ump->discinfo.sector_size; 5547 5548 from = buf->b_blkno; 5549 sectors = buf->b_bcount / sector_size; 5550 5551 isdir = (udf_node->vnode->v_type == VDIR); 5552 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 5553 5554 /* assure we have enough translation slots */ 5555 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 5556 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 5557 5558 if (sectors > UDF_MAX_MAPPINGS) { 5559 printf("udf_read_filebuf: implementation limit on bufsize\n"); 5560 buf->b_error = EIO; 5561 biodone(buf); 5562 return; 5563 } 5564 5565 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 5566 5567 error = 0; 5568 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 5569 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 5570 if (error) { 5571 buf->b_error = error; 5572 biodone(buf); 5573 goto out; 5574 } 5575 DPRINTF(READ, ("\ttranslate extent went OK\n")); 5576 5577 /* pre-check if its an internal */ 5578 if (*mapping == UDF_TRANS_INTERN) { 5579 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 5580 if (error) 5581 buf->b_error = error; 5582 biodone(buf); 5583 goto out; 5584 } 5585 DPRINTF(READ, ("\tnot intern\n")); 5586 5587 #ifdef DEBUG 5588 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 5589 printf("Returned translation table:\n"); 5590 for (sector = 0; sector < sectors; sector++) { 5591 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 5592 } 5593 } 5594 #endif 5595 5596 /* request read-in of data from disc sheduler */ 5597 buf->b_resid = buf->b_bcount; 5598 for (sector = 0; sector < sectors; sector++) { 5599 buf_offset = sector * sector_size; 5600 buf_pos = (uint8_t *) buf->b_data + buf_offset; 5601 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 5602 5603 /* check if its zero or unmapped to stop reading */ 5604 switch (mapping[sector]) { 5605 case UDF_TRANS_UNMAPPED: 5606 case UDF_TRANS_ZERO: 5607 /* copy zero sector TODO runlength like below */ 5608 memset(buf_pos, 0, sector_size); 5609 DPRINTF(READ, ("\treturning zero sector\n")); 5610 nestiobuf_done(buf, sector_size, 0); 5611 break; 5612 default : 5613 DPRINTF(READ, ("\tread sector " 5614 "%"PRIu64"\n", mapping[sector])); 5615 5616 lblkno = from + sector; 5617 run_start = mapping[sector]; 5618 run_length = 1; 5619 while (sector < sectors-1) { 5620 if (mapping[sector+1] != mapping[sector]+1) 5621 break; 5622 run_length++; 5623 sector++; 5624 } 5625 5626 /* 5627 * nest an iobuf and mark it for async reading. Since 5628 * we're using nested buffers, they can't be cached by 5629 * design. 5630 */ 5631 rbuflen = run_length * sector_size; 5632 rblk = run_start * (sector_size/DEV_BSIZE); 5633 5634 nestbuf = getiobuf(NULL, true); 5635 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 5636 /* nestbuf is B_ASYNC */ 5637 5638 /* identify this nestbuf */ 5639 nestbuf->b_lblkno = lblkno; 5640 assert(nestbuf->b_vp == udf_node->vnode); 5641 5642 /* CD shedules on raw blkno */ 5643 nestbuf->b_blkno = rblk; 5644 nestbuf->b_proc = NULL; 5645 nestbuf->b_rawblkno = rblk; 5646 nestbuf->b_udf_c_type = what; 5647 5648 udf_discstrat_queuebuf(ump, nestbuf); 5649 } 5650 } 5651 out: 5652 /* if we're synchronously reading, wait for the completion */ 5653 if ((buf->b_flags & B_ASYNC) == 0) 5654 biowait(buf); 5655 5656 DPRINTF(READ, ("\tend of read_filebuf\n")); 5657 free(mapping, M_TEMP); 5658 return; 5659 } 5660 5661 5662 void 5663 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 5664 { 5665 struct buf *nestbuf; 5666 struct udf_mount *ump = udf_node->ump; 5667 uint64_t *mapping; 5668 uint64_t run_start; 5669 uint32_t lb_size; 5670 uint32_t buf_offset, lb_num, rbuflen, rblk; 5671 uint32_t from, lblkno; 5672 uint32_t num_lb; 5673 uint8_t *buf_pos; 5674 int error, run_length, isdir, what, s; 5675 5676 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 5677 5678 from = buf->b_blkno; 5679 num_lb = buf->b_bcount / lb_size; 5680 5681 isdir = (udf_node->vnode->v_type == VDIR); 5682 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 5683 5684 /* assure we have enough translation slots */ 5685 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 5686 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 5687 5688 if (num_lb > UDF_MAX_MAPPINGS) { 5689 printf("udf_write_filebuf: implementation limit on bufsize\n"); 5690 buf->b_error = EIO; 5691 biodone(buf); 5692 return; 5693 } 5694 5695 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 5696 5697 error = 0; 5698 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 5699 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 5700 if (error) { 5701 buf->b_error = error; 5702 biodone(buf); 5703 goto out; 5704 } 5705 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 5706 5707 /* if its internally mapped, we can write it in the descriptor itself */ 5708 if (*mapping == UDF_TRANS_INTERN) { 5709 /* TODO paranoia check if we ARE going to have enough space */ 5710 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 5711 if (error) 5712 buf->b_error = error; 5713 biodone(buf); 5714 goto out; 5715 } 5716 DPRINTF(WRITE, ("\tnot intern\n")); 5717 5718 /* request write out of data to disc sheduler */ 5719 buf->b_resid = buf->b_bcount; 5720 for (lb_num = 0; lb_num < num_lb; lb_num++) { 5721 buf_offset = lb_num * lb_size; 5722 buf_pos = (uint8_t *) buf->b_data + buf_offset; 5723 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 5724 5725 /* 5726 * Mappings are not that important here. Just before we write 5727 * the lb_num we late-allocate them when needed and update the 5728 * mapping in the udf_node. 5729 */ 5730 5731 /* XXX why not ignore the mapping altogether ? */ 5732 /* TODO estimate here how much will be late-allocated */ 5733 DPRINTF(WRITE, ("\twrite lb_num " 5734 "%"PRIu64, mapping[lb_num])); 5735 5736 lblkno = from + lb_num; 5737 run_start = mapping[lb_num]; 5738 run_length = 1; 5739 while (lb_num < num_lb-1) { 5740 if (mapping[lb_num+1] != mapping[lb_num]+1) 5741 if (mapping[lb_num+1] != mapping[lb_num]) 5742 break; 5743 run_length++; 5744 lb_num++; 5745 } 5746 DPRINTF(WRITE, ("+ %d\n", run_length)); 5747 5748 /* nest an iobuf on the master buffer for the extent */ 5749 rbuflen = run_length * lb_size; 5750 rblk = run_start * (lb_size/DEV_BSIZE); 5751 5752 #if 0 5753 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 5754 switch (mapping[lb_num]) { 5755 case UDF_TRANS_UNMAPPED: 5756 case UDF_TRANS_ZERO: 5757 rblk = -1; 5758 break; 5759 default: 5760 rblk = run_start * (lb_size/DEV_BSIZE); 5761 break; 5762 } 5763 #endif 5764 5765 nestbuf = getiobuf(NULL, true); 5766 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 5767 /* nestbuf is B_ASYNC */ 5768 5769 /* identify this nestbuf */ 5770 nestbuf->b_lblkno = lblkno; 5771 KASSERT(nestbuf->b_vp == udf_node->vnode); 5772 5773 /* CD shedules on raw blkno */ 5774 nestbuf->b_blkno = rblk; 5775 nestbuf->b_proc = NULL; 5776 nestbuf->b_rawblkno = rblk; 5777 nestbuf->b_udf_c_type = what; 5778 5779 /* increment our outstanding bufs counter */ 5780 s = splbio(); 5781 udf_node->outstanding_bufs++; 5782 splx(s); 5783 5784 udf_discstrat_queuebuf(ump, nestbuf); 5785 } 5786 out: 5787 /* if we're synchronously writing, wait for the completion */ 5788 if ((buf->b_flags & B_ASYNC) == 0) 5789 biowait(buf); 5790 5791 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 5792 free(mapping, M_TEMP); 5793 return; 5794 } 5795 5796 /* --------------------------------------------------------------------- */ 5797 5798 5799
Indexes created Mon Sep 29 21:09:56 GMT 2025