udf_subr.c revision 1.79
1 /* $NetBSD: udf_subr.c,v 1.79 2008/12/16 16:27:05 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 1.79 2008/12/16 16:27:05 reinoud Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_compat_netbsd.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/sysctl.h> 43 #include <sys/namei.h> 44 #include <sys/proc.h> 45 #include <sys/kernel.h> 46 #include <sys/vnode.h> 47 #include <miscfs/genfs/genfs_node.h> 48 #include <sys/mount.h> 49 #include <sys/buf.h> 50 #include <sys/file.h> 51 #include <sys/device.h> 52 #include <sys/disklabel.h> 53 #include <sys/ioctl.h> 54 #include <sys/malloc.h> 55 #include <sys/dirent.h> 56 #include <sys/stat.h> 57 #include <sys/conf.h> 58 #include <sys/kauth.h> 59 #include <fs/unicode.h> 60 #include <dev/clock_subr.h> 61 62 #include <fs/udf/ecma167-udf.h> 63 #include <fs/udf/udf_mount.h> 64 #include <sys/dirhash.h> 65 66 #include "udf.h" 67 #include "udf_subr.h" 68 #include "udf_bswap.h" 69 70 71 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 72 73 #define UDF_SET_SYSTEMFILE(vp) \ 74 /* XXXAD Is the vnode locked? */ \ 75 (vp)->v_vflag |= VV_SYSTEM; \ 76 vref(vp); \ 77 vput(vp); \ 78 79 extern int syncer_maxdelay; /* maximum delay time */ 80 extern int (**udf_vnodeop_p)(void *); 81 82 /* --------------------------------------------------------------------- */ 83 84 //#ifdef DEBUG 85 #if 1 86 87 #if 0 88 static void 89 udf_dumpblob(boid *blob, uint32_t dlen) 90 { 91 int i, j; 92 93 printf("blob = %p\n", blob); 94 printf("dump of %d bytes\n", dlen); 95 96 for (i = 0; i < dlen; i+ = 16) { 97 printf("%04x ", i); 98 for (j = 0; j < 16; j++) { 99 if (i+j < dlen) { 100 printf("%02x ", blob[i+j]); 101 } else { 102 printf(" "); 103 } 104 } 105 for (j = 0; j < 16; j++) { 106 if (i+j < dlen) { 107 if (blob[i+j]>32 && blob[i+j]! = 127) { 108 printf("%c", blob[i+j]); 109 } else { 110 printf("."); 111 } 112 } 113 } 114 printf("\n"); 115 } 116 printf("\n"); 117 Debugger(); 118 } 119 #endif 120 121 static void 122 udf_dump_discinfo(struct udf_mount *ump) 123 { 124 char bits[128]; 125 struct mmc_discinfo *di = &ump->discinfo; 126 127 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 128 return; 129 130 printf("Device/media info :\n"); 131 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 132 printf("\tderived class %d\n", di->mmc_class); 133 printf("\tsector size %d\n", di->sector_size); 134 printf("\tdisc state %d\n", di->disc_state); 135 printf("\tlast ses state %d\n", di->last_session_state); 136 printf("\tbg format state %d\n", di->bg_format_state); 137 printf("\tfrst track %d\n", di->first_track); 138 printf("\tfst on last ses %d\n", di->first_track_last_session); 139 printf("\tlst on last ses %d\n", di->last_track_last_session); 140 printf("\tlink block penalty %d\n", di->link_block_penalty); 141 bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 142 sizeof(bits)); 143 printf("\tdisc flags %s\n", bits); 144 printf("\tdisc id %x\n", di->disc_id); 145 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 146 147 printf("\tnum sessions %d\n", di->num_sessions); 148 printf("\tnum tracks %d\n", di->num_tracks); 149 150 bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 151 printf("\tcapabilities cur %s\n", bits); 152 bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 153 printf("\tcapabilities cap %s\n", bits); 154 } 155 #else 156 #define udf_dump_discinfo(a); 157 #endif 158 159 160 /* --------------------------------------------------------------------- */ 161 162 /* not called often */ 163 int 164 udf_update_discinfo(struct udf_mount *ump) 165 { 166 struct vnode *devvp = ump->devvp; 167 struct partinfo dpart; 168 struct mmc_discinfo *di; 169 int error; 170 171 DPRINTF(VOLUMES, ("read/update disc info\n")); 172 di = &ump->discinfo; 173 memset(di, 0, sizeof(struct mmc_discinfo)); 174 175 /* check if we're on a MMC capable device, i.e. CD/DVD */ 176 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 177 if (error == 0) { 178 udf_dump_discinfo(ump); 179 return 0; 180 } 181 182 /* disc partition support */ 183 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 184 if (error) 185 return ENODEV; 186 187 /* set up a disc info profile for partitions */ 188 di->mmc_profile = 0x01; /* disc type */ 189 di->mmc_class = MMC_CLASS_DISC; 190 di->disc_state = MMC_STATE_CLOSED; 191 di->last_session_state = MMC_STATE_CLOSED; 192 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 193 di->link_block_penalty = 0; 194 195 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 196 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 197 di->mmc_cap = di->mmc_cur; 198 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 199 200 /* TODO problem with last_possible_lba on resizable VND; request */ 201 di->last_possible_lba = dpart.part->p_size; 202 di->sector_size = dpart.disklab->d_secsize; 203 204 di->num_sessions = 1; 205 di->num_tracks = 1; 206 207 di->first_track = 1; 208 di->first_track_last_session = di->last_track_last_session = 1; 209 210 udf_dump_discinfo(ump); 211 return 0; 212 } 213 214 215 int 216 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 217 { 218 struct vnode *devvp = ump->devvp; 219 struct mmc_discinfo *di = &ump->discinfo; 220 int error, class; 221 222 DPRINTF(VOLUMES, ("read track info\n")); 223 224 class = di->mmc_class; 225 if (class != MMC_CLASS_DISC) { 226 /* tracknr specified in struct ti */ 227 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 228 return error; 229 } 230 231 /* disc partition support */ 232 if (ti->tracknr != 1) 233 return EIO; 234 235 /* create fake ti (TODO check for resized vnds) */ 236 ti->sessionnr = 1; 237 238 ti->track_mode = 0; /* XXX */ 239 ti->data_mode = 0; /* XXX */ 240 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 241 242 ti->track_start = 0; 243 ti->packet_size = 1; 244 245 /* TODO support for resizable vnd */ 246 ti->track_size = di->last_possible_lba; 247 ti->next_writable = di->last_possible_lba; 248 ti->last_recorded = ti->next_writable; 249 ti->free_blocks = 0; 250 251 return 0; 252 } 253 254 255 int 256 udf_setup_writeparams(struct udf_mount *ump) 257 { 258 struct mmc_writeparams mmc_writeparams; 259 int error; 260 261 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 262 return 0; 263 264 /* 265 * only CD burning normally needs setting up, but other disc types 266 * might need other settings to be made. The MMC framework will set up 267 * the nessisary recording parameters according to the disc 268 * characteristics read in. Modifications can be made in the discinfo 269 * structure passed to change the nature of the disc. 270 */ 271 272 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 273 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 274 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 275 276 /* 277 * UDF dictates first track to determine track mode for the whole 278 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 279 * To prevent problems with a `reserved' track in front we start with 280 * the 2nd track and if that is not valid, go for the 1st. 281 */ 282 mmc_writeparams.tracknr = 2; 283 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 284 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 285 286 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 287 FKIOCTL, NOCRED); 288 if (error) { 289 mmc_writeparams.tracknr = 1; 290 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 291 &mmc_writeparams, FKIOCTL, NOCRED); 292 } 293 return error; 294 } 295 296 297 int 298 udf_synchronise_caches(struct udf_mount *ump) 299 { 300 struct mmc_op mmc_op; 301 302 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 303 304 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 305 return 0; 306 307 /* discs are done now */ 308 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 309 return 0; 310 311 bzero(&mmc_op, sizeof(struct mmc_op)); 312 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 313 314 /* ignore return code */ 315 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 316 317 return 0; 318 } 319 320 /* --------------------------------------------------------------------- */ 321 322 /* track/session searching for mounting */ 323 int 324 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 325 int *first_tracknr, int *last_tracknr) 326 { 327 struct mmc_trackinfo trackinfo; 328 uint32_t tracknr, start_track, num_tracks; 329 int error; 330 331 /* if negative, sessionnr is relative to last session */ 332 if (args->sessionnr < 0) { 333 args->sessionnr += ump->discinfo.num_sessions; 334 } 335 336 /* sanity */ 337 if (args->sessionnr < 0) 338 args->sessionnr = 0; 339 if (args->sessionnr > ump->discinfo.num_sessions) 340 args->sessionnr = ump->discinfo.num_sessions; 341 342 /* search the tracks for this session, zero session nr indicates last */ 343 if (args->sessionnr == 0) 344 args->sessionnr = ump->discinfo.num_sessions; 345 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 346 args->sessionnr--; 347 348 /* sanity again */ 349 if (args->sessionnr < 0) 350 args->sessionnr = 0; 351 352 /* search the first and last track of the specified session */ 353 num_tracks = ump->discinfo.num_tracks; 354 start_track = ump->discinfo.first_track; 355 356 /* search for first track of this session */ 357 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 358 /* get track info */ 359 trackinfo.tracknr = tracknr; 360 error = udf_update_trackinfo(ump, &trackinfo); 361 if (error) 362 return error; 363 364 if (trackinfo.sessionnr == args->sessionnr) 365 break; 366 } 367 *first_tracknr = tracknr; 368 369 /* search for last track of this session */ 370 for (;tracknr <= num_tracks; tracknr++) { 371 /* get track info */ 372 trackinfo.tracknr = tracknr; 373 error = udf_update_trackinfo(ump, &trackinfo); 374 if (error || (trackinfo.sessionnr != args->sessionnr)) { 375 tracknr--; 376 break; 377 } 378 } 379 if (tracknr > num_tracks) 380 tracknr--; 381 382 *last_tracknr = tracknr; 383 384 if (*last_tracknr < *first_tracknr) { 385 printf( "udf_search_tracks: sanity check on drive+disc failed, " 386 "drive returned garbage\n"); 387 return EINVAL; 388 } 389 390 assert(*last_tracknr >= *first_tracknr); 391 return 0; 392 } 393 394 395 /* 396 * NOTE: this is the only routine in this file that directly peeks into the 397 * metadata file but since its at a larval state of the mount it can't hurt. 398 * 399 * XXX candidate for udf_allocation.c 400 * XXX clean me up!, change to new node reading code. 401 */ 402 403 static void 404 udf_check_track_metadata_overlap(struct udf_mount *ump, 405 struct mmc_trackinfo *trackinfo) 406 { 407 struct part_desc *part; 408 struct file_entry *fe; 409 struct extfile_entry *efe; 410 struct short_ad *s_ad; 411 struct long_ad *l_ad; 412 uint32_t track_start, track_end; 413 uint32_t phys_part_start, phys_part_end, part_start, part_end; 414 uint32_t sector_size, len, alloclen, plb_num; 415 uint8_t *pos; 416 int addr_type, icblen, icbflags, flags; 417 418 /* get our track extents */ 419 track_start = trackinfo->track_start; 420 track_end = track_start + trackinfo->track_size; 421 422 /* get our base partition extent */ 423 KASSERT(ump->node_part == ump->fids_part); 424 part = ump->partitions[ump->node_part]; 425 phys_part_start = udf_rw32(part->start_loc); 426 phys_part_end = phys_part_start + udf_rw32(part->part_len); 427 428 /* no use if its outside the physical partition */ 429 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 430 return; 431 432 /* 433 * now follow all extents in the fe/efe to see if they refer to this 434 * track 435 */ 436 437 sector_size = ump->discinfo.sector_size; 438 439 /* XXX should we claim exclusive access to the metafile ? */ 440 /* TODO: move to new node read code */ 441 fe = ump->metadata_node->fe; 442 efe = ump->metadata_node->efe; 443 if (fe) { 444 alloclen = udf_rw32(fe->l_ad); 445 pos = &fe->data[0] + udf_rw32(fe->l_ea); 446 icbflags = udf_rw16(fe->icbtag.flags); 447 } else { 448 assert(efe); 449 alloclen = udf_rw32(efe->l_ad); 450 pos = &efe->data[0] + udf_rw32(efe->l_ea); 451 icbflags = udf_rw16(efe->icbtag.flags); 452 } 453 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 454 455 while (alloclen) { 456 if (addr_type == UDF_ICB_SHORT_ALLOC) { 457 icblen = sizeof(struct short_ad); 458 s_ad = (struct short_ad *) pos; 459 len = udf_rw32(s_ad->len); 460 plb_num = udf_rw32(s_ad->lb_num); 461 } else { 462 /* should not be present, but why not */ 463 icblen = sizeof(struct long_ad); 464 l_ad = (struct long_ad *) pos; 465 len = udf_rw32(l_ad->len); 466 plb_num = udf_rw32(l_ad->loc.lb_num); 467 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 468 } 469 /* process extent */ 470 flags = UDF_EXT_FLAGS(len); 471 len = UDF_EXT_LEN(len); 472 473 part_start = phys_part_start + plb_num; 474 part_end = part_start + (len / sector_size); 475 476 if ((part_start >= track_start) && (part_end <= track_end)) { 477 /* extent is enclosed within this track */ 478 ump->metadata_track = *trackinfo; 479 return; 480 } 481 482 pos += icblen; 483 alloclen -= icblen; 484 } 485 } 486 487 488 int 489 udf_search_writing_tracks(struct udf_mount *ump) 490 { 491 struct mmc_trackinfo trackinfo; 492 struct part_desc *part; 493 uint32_t tracknr, start_track, num_tracks; 494 uint32_t track_start, track_end, part_start, part_end; 495 int node_alloc, error; 496 497 /* 498 * in the CD/(HD)DVD/BD recordable device model a few tracks within 499 * the last session might be open but in the UDF device model at most 500 * three tracks can be open: a reserved track for delayed ISO VRS 501 * writing, a data track and a metadata track. We search here for the 502 * data track and the metadata track. Note that the reserved track is 503 * troublesome but can be detected by its small size of < 512 sectors. 504 */ 505 506 num_tracks = ump->discinfo.num_tracks; 507 start_track = ump->discinfo.first_track; 508 509 /* fetch info on first and possibly only track */ 510 trackinfo.tracknr = start_track; 511 error = udf_update_trackinfo(ump, &trackinfo); 512 if (error) 513 return error; 514 515 /* copy results to our mount point */ 516 ump->data_track = trackinfo; 517 ump->metadata_track = trackinfo; 518 519 /* if not sequential, we're done */ 520 if (num_tracks == 1) 521 return 0; 522 523 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 524 /* get track info */ 525 trackinfo.tracknr = tracknr; 526 error = udf_update_trackinfo(ump, &trackinfo); 527 if (error) 528 return error; 529 530 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 531 continue; 532 533 track_start = trackinfo.track_start; 534 track_end = track_start + trackinfo.track_size; 535 536 /* check for overlap on data partition */ 537 part = ump->partitions[ump->data_part]; 538 part_start = udf_rw32(part->start_loc); 539 part_end = part_start + udf_rw32(part->part_len); 540 if ((part_start < track_end) && (part_end > track_start)) { 541 ump->data_track = trackinfo; 542 /* TODO check if UDF partition data_part is writable */ 543 } 544 545 /* check for overlap on metadata partition */ 546 node_alloc = ump->vtop_alloc[ump->node_part]; 547 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 548 (node_alloc == UDF_ALLOC_METABITMAP)) { 549 udf_check_track_metadata_overlap(ump, &trackinfo); 550 } else { 551 ump->metadata_track = trackinfo; 552 } 553 } 554 555 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 556 return EROFS; 557 558 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 559 return EROFS; 560 561 return 0; 562 } 563 564 /* --------------------------------------------------------------------- */ 565 566 /* 567 * Check if the blob starts with a good UDF tag. Tags are protected by a 568 * checksum over the reader except one byte at position 4 that is the checksum 569 * itself. 570 */ 571 572 int 573 udf_check_tag(void *blob) 574 { 575 struct desc_tag *tag = blob; 576 uint8_t *pos, sum, cnt; 577 578 /* check TAG header checksum */ 579 pos = (uint8_t *) tag; 580 sum = 0; 581 582 for(cnt = 0; cnt < 16; cnt++) { 583 if (cnt != 4) 584 sum += *pos; 585 pos++; 586 } 587 if (sum != tag->cksum) { 588 /* bad tag header checksum; this is not a valid tag */ 589 return EINVAL; 590 } 591 592 return 0; 593 } 594 595 596 /* 597 * check tag payload will check descriptor CRC as specified. 598 * If the descriptor is too long, it will return EIO otherwise EINVAL. 599 */ 600 601 int 602 udf_check_tag_payload(void *blob, uint32_t max_length) 603 { 604 struct desc_tag *tag = blob; 605 uint16_t crc, crc_len; 606 607 crc_len = udf_rw16(tag->desc_crc_len); 608 609 /* check payload CRC if applicable */ 610 if (crc_len == 0) 611 return 0; 612 613 if (crc_len > max_length) 614 return EIO; 615 616 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 617 if (crc != udf_rw16(tag->desc_crc)) { 618 /* bad payload CRC; this is a broken tag */ 619 return EINVAL; 620 } 621 622 return 0; 623 } 624 625 626 void 627 udf_validate_tag_sum(void *blob) 628 { 629 struct desc_tag *tag = blob; 630 uint8_t *pos, sum, cnt; 631 632 /* calculate TAG header checksum */ 633 pos = (uint8_t *) tag; 634 sum = 0; 635 636 for(cnt = 0; cnt < 16; cnt++) { 637 if (cnt != 4) sum += *pos; 638 pos++; 639 } 640 tag->cksum = sum; /* 8 bit */ 641 } 642 643 644 /* assumes sector number of descriptor to be saved already present */ 645 void 646 udf_validate_tag_and_crc_sums(void *blob) 647 { 648 struct desc_tag *tag = blob; 649 uint8_t *btag = (uint8_t *) tag; 650 uint16_t crc, crc_len; 651 652 crc_len = udf_rw16(tag->desc_crc_len); 653 654 /* check payload CRC if applicable */ 655 if (crc_len > 0) { 656 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 657 tag->desc_crc = udf_rw16(crc); 658 } 659 660 /* calculate TAG header checksum */ 661 udf_validate_tag_sum(blob); 662 } 663 664 /* --------------------------------------------------------------------- */ 665 666 /* 667 * XXX note the different semantics from udfclient: for FIDs it still rounds 668 * up to sectors. Use udf_fidsize() for a correct length. 669 */ 670 671 int 672 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 673 { 674 uint32_t size, tag_id, num_lb, elmsz; 675 676 tag_id = udf_rw16(dscr->tag.id); 677 678 switch (tag_id) { 679 case TAGID_LOGVOL : 680 size = sizeof(struct logvol_desc) - 1; 681 size += udf_rw32(dscr->lvd.mt_l); 682 break; 683 case TAGID_UNALLOC_SPACE : 684 elmsz = sizeof(struct extent_ad); 685 size = sizeof(struct unalloc_sp_desc) - elmsz; 686 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 687 break; 688 case TAGID_FID : 689 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 690 size = (size + 3) & ~3; 691 break; 692 case TAGID_LOGVOL_INTEGRITY : 693 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 694 size += udf_rw32(dscr->lvid.l_iu); 695 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 696 break; 697 case TAGID_SPACE_BITMAP : 698 size = sizeof(struct space_bitmap_desc) - 1; 699 size += udf_rw32(dscr->sbd.num_bytes); 700 break; 701 case TAGID_SPARING_TABLE : 702 elmsz = sizeof(struct spare_map_entry); 703 size = sizeof(struct udf_sparing_table) - elmsz; 704 size += udf_rw16(dscr->spt.rt_l) * elmsz; 705 break; 706 case TAGID_FENTRY : 707 size = sizeof(struct file_entry); 708 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 709 break; 710 case TAGID_EXTFENTRY : 711 size = sizeof(struct extfile_entry); 712 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 713 break; 714 case TAGID_FSD : 715 size = sizeof(struct fileset_desc); 716 break; 717 default : 718 size = sizeof(union dscrptr); 719 break; 720 } 721 722 if ((size == 0) || (lb_size == 0)) 723 return 0; 724 725 if (lb_size == 1) 726 return size; 727 728 /* round up in sectors */ 729 num_lb = (size + lb_size -1) / lb_size; 730 return num_lb * lb_size; 731 } 732 733 734 int 735 udf_fidsize(struct fileid_desc *fid) 736 { 737 uint32_t size; 738 739 if (udf_rw16(fid->tag.id) != TAGID_FID) 740 panic("got udf_fidsize on non FID\n"); 741 742 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 743 size = (size + 3) & ~3; 744 745 return size; 746 } 747 748 /* --------------------------------------------------------------------- */ 749 750 void 751 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 752 { 753 int ret; 754 755 mutex_enter(&udf_node->node_mutex); 756 /* wait until free */ 757 while (udf_node->i_flags & IN_LOCKED) { 758 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 759 /* TODO check if we should return error; abort */ 760 if (ret == EWOULDBLOCK) { 761 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 762 "wanted at %s:%d, previously locked at %s:%d\n", 763 udf_node, fname, lineno, 764 udf_node->lock_fname, udf_node->lock_lineno)); 765 } 766 } 767 /* grab */ 768 udf_node->i_flags |= IN_LOCKED | flag; 769 /* debug */ 770 udf_node->lock_fname = fname; 771 udf_node->lock_lineno = lineno; 772 773 mutex_exit(&udf_node->node_mutex); 774 } 775 776 777 void 778 udf_unlock_node(struct udf_node *udf_node, int flag) 779 { 780 mutex_enter(&udf_node->node_mutex); 781 udf_node->i_flags &= ~(IN_LOCKED | flag); 782 cv_broadcast(&udf_node->node_lock); 783 mutex_exit(&udf_node->node_mutex); 784 } 785 786 787 /* --------------------------------------------------------------------- */ 788 789 static int 790 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 791 { 792 int error; 793 794 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 795 (union dscrptr **) dst); 796 if (!error) { 797 /* blank terminator blocks are not allowed here */ 798 if (*dst == NULL) 799 return ENOENT; 800 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 801 error = ENOENT; 802 free(*dst, M_UDFVOLD); 803 *dst = NULL; 804 DPRINTF(VOLUMES, ("Not an anchor\n")); 805 } 806 } 807 808 return error; 809 } 810 811 812 int 813 udf_read_anchors(struct udf_mount *ump) 814 { 815 struct udf_args *args = &ump->mount_args; 816 struct mmc_trackinfo first_track; 817 struct mmc_trackinfo second_track; 818 struct mmc_trackinfo last_track; 819 struct anchor_vdp **anchorsp; 820 uint32_t track_start; 821 uint32_t track_end; 822 uint32_t positions[4]; 823 int first_tracknr, last_tracknr; 824 int error, anch, ok, first_anchor; 825 826 /* search the first and last track of the specified session */ 827 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 828 if (!error) { 829 first_track.tracknr = first_tracknr; 830 error = udf_update_trackinfo(ump, &first_track); 831 } 832 if (!error) { 833 last_track.tracknr = last_tracknr; 834 error = udf_update_trackinfo(ump, &last_track); 835 } 836 if ((!error) && (first_tracknr != last_tracknr)) { 837 second_track.tracknr = first_tracknr+1; 838 error = udf_update_trackinfo(ump, &second_track); 839 } 840 if (error) { 841 printf("UDF mount: reading disc geometry failed\n"); 842 return 0; 843 } 844 845 track_start = first_track.track_start; 846 847 /* `end' is not as straitforward as start. */ 848 track_end = last_track.track_start 849 + last_track.track_size - last_track.free_blocks - 1; 850 851 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 852 /* end of track is not straitforward here */ 853 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 854 track_end = last_track.last_recorded; 855 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 856 track_end = last_track.next_writable 857 - ump->discinfo.link_block_penalty; 858 } 859 860 /* its no use reading a blank track */ 861 first_anchor = 0; 862 if (first_track.flags & MMC_TRACKINFO_BLANK) 863 first_anchor = 1; 864 865 /* get our packet size */ 866 ump->packet_size = first_track.packet_size; 867 if (first_track.flags & MMC_TRACKINFO_BLANK) 868 ump->packet_size = second_track.packet_size; 869 870 if (ump->packet_size <= 1) { 871 /* take max, but not bigger than 64 */ 872 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 873 ump->packet_size = MIN(ump->packet_size, 64); 874 } 875 KASSERT(ump->packet_size >= 1); 876 877 /* read anchors start+256, start+512, end-256, end */ 878 positions[0] = track_start+256; 879 positions[1] = track_end-256; 880 positions[2] = track_end; 881 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 882 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 883 884 ok = 0; 885 anchorsp = ump->anchors; 886 for (anch = first_anchor; anch < 4; anch++) { 887 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 888 positions[anch])); 889 error = udf_read_anchor(ump, positions[anch], anchorsp); 890 if (!error) { 891 anchorsp++; 892 ok++; 893 } 894 } 895 896 /* VATs are only recorded on sequential media, but initialise */ 897 ump->first_possible_vat_location = track_start + 2; 898 ump->last_possible_vat_location = track_end + last_track.packet_size; 899 900 return ok; 901 } 902 903 /* --------------------------------------------------------------------- */ 904 905 /* we dont try to be smart; we just record the parts */ 906 #define UDF_UPDATE_DSCR(name, dscr) \ 907 if (name) \ 908 free(name, M_UDFVOLD); \ 909 name = dscr; 910 911 static int 912 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 913 { 914 struct part_desc *part; 915 uint16_t phys_part, raw_phys_part; 916 917 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 918 udf_rw16(dscr->tag.id))); 919 switch (udf_rw16(dscr->tag.id)) { 920 case TAGID_PRI_VOL : /* primary partition */ 921 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 922 break; 923 case TAGID_LOGVOL : /* logical volume */ 924 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 925 break; 926 case TAGID_UNALLOC_SPACE : /* unallocated space */ 927 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 928 break; 929 case TAGID_IMP_VOL : /* implementation */ 930 /* XXX do we care about multiple impl. descr ? */ 931 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 932 break; 933 case TAGID_PARTITION : /* physical partition */ 934 /* not much use if its not allocated */ 935 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 936 free(dscr, M_UDFVOLD); 937 break; 938 } 939 940 /* 941 * BUGALERT: some rogue implementations use random physical 942 * partion numbers to break other implementations so lookup 943 * the number. 944 */ 945 raw_phys_part = udf_rw16(dscr->pd.part_num); 946 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 947 part = ump->partitions[phys_part]; 948 if (part == NULL) 949 break; 950 if (udf_rw16(part->part_num) == raw_phys_part) 951 break; 952 } 953 if (phys_part == UDF_PARTITIONS) { 954 free(dscr, M_UDFVOLD); 955 return EINVAL; 956 } 957 958 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 959 break; 960 case TAGID_VOL : /* volume space extender; rare */ 961 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 962 free(dscr, M_UDFVOLD); 963 break; 964 default : 965 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 966 udf_rw16(dscr->tag.id))); 967 free(dscr, M_UDFVOLD); 968 } 969 970 return 0; 971 } 972 #undef UDF_UPDATE_DSCR 973 974 /* --------------------------------------------------------------------- */ 975 976 static int 977 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 978 { 979 union dscrptr *dscr; 980 uint32_t sector_size, dscr_size; 981 int error; 982 983 sector_size = ump->discinfo.sector_size; 984 985 /* loc is sectornr, len is in bytes */ 986 error = EIO; 987 while (len) { 988 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 989 if (error) 990 return error; 991 992 /* blank block is a terminator */ 993 if (dscr == NULL) 994 return 0; 995 996 /* TERM descriptor is a terminator */ 997 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 998 free(dscr, M_UDFVOLD); 999 return 0; 1000 } 1001 1002 /* process all others */ 1003 dscr_size = udf_tagsize(dscr, sector_size); 1004 error = udf_process_vds_descriptor(ump, dscr); 1005 if (error) { 1006 free(dscr, M_UDFVOLD); 1007 break; 1008 } 1009 assert((dscr_size % sector_size) == 0); 1010 1011 len -= dscr_size; 1012 loc += dscr_size / sector_size; 1013 } 1014 1015 return error; 1016 } 1017 1018 1019 int 1020 udf_read_vds_space(struct udf_mount *ump) 1021 { 1022 /* struct udf_args *args = &ump->mount_args; */ 1023 struct anchor_vdp *anchor, *anchor2; 1024 size_t size; 1025 uint32_t main_loc, main_len; 1026 uint32_t reserve_loc, reserve_len; 1027 int error; 1028 1029 /* 1030 * read in VDS space provided by the anchors; if one descriptor read 1031 * fails, try the mirror sector. 1032 * 1033 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1034 * avoids the `compatibility features' of DirectCD that may confuse 1035 * stuff completely. 1036 */ 1037 1038 anchor = ump->anchors[0]; 1039 anchor2 = ump->anchors[1]; 1040 assert(anchor); 1041 1042 if (anchor2) { 1043 size = sizeof(struct extent_ad); 1044 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1045 anchor = anchor2; 1046 /* reserve is specified to be a literal copy of main */ 1047 } 1048 1049 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1050 main_len = udf_rw32(anchor->main_vds_ex.len); 1051 1052 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1053 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1054 1055 error = udf_read_vds_extent(ump, main_loc, main_len); 1056 if (error) { 1057 printf("UDF mount: reading in reserve VDS extent\n"); 1058 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1059 } 1060 1061 return error; 1062 } 1063 1064 /* --------------------------------------------------------------------- */ 1065 1066 /* 1067 * Read in the logical volume integrity sequence pointed to by our logical 1068 * volume descriptor. Its a sequence that can be extended using fields in the 1069 * integrity descriptor itself. On sequential media only one is found, on 1070 * rewritable media a sequence of descriptors can be found as a form of 1071 * history keeping and on non sequential write-once media the chain is vital 1072 * to allow more and more descriptors to be written. The last descriptor 1073 * written in an extent needs to claim space for a new extent. 1074 */ 1075 1076 static int 1077 udf_retrieve_lvint(struct udf_mount *ump) 1078 { 1079 union dscrptr *dscr; 1080 struct logvol_int_desc *lvint; 1081 struct udf_lvintq *trace; 1082 uint32_t lb_size, lbnum, len; 1083 int dscr_type, error, trace_len; 1084 1085 lb_size = udf_rw32(ump->logical_vol->lb_size); 1086 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1087 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1088 1089 /* clean trace */ 1090 memset(ump->lvint_trace, 0, 1091 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1092 1093 trace_len = 0; 1094 trace = ump->lvint_trace; 1095 trace->start = lbnum; 1096 trace->end = lbnum + len/lb_size; 1097 trace->pos = 0; 1098 trace->wpos = 0; 1099 1100 lvint = NULL; 1101 dscr = NULL; 1102 error = 0; 1103 while (len) { 1104 trace->pos = lbnum - trace->start; 1105 trace->wpos = trace->pos + 1; 1106 1107 /* read in our integrity descriptor */ 1108 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1109 if (!error) { 1110 if (dscr == NULL) { 1111 trace->wpos = trace->pos; 1112 break; /* empty terminates */ 1113 } 1114 dscr_type = udf_rw16(dscr->tag.id); 1115 if (dscr_type == TAGID_TERM) { 1116 trace->wpos = trace->pos; 1117 break; /* clean terminator */ 1118 } 1119 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1120 /* fatal... corrupt disc */ 1121 error = ENOENT; 1122 break; 1123 } 1124 if (lvint) 1125 free(lvint, M_UDFVOLD); 1126 lvint = &dscr->lvid; 1127 dscr = NULL; 1128 } /* else hope for the best... maybe the next is ok */ 1129 1130 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1131 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1132 1133 /* proceed sequential */ 1134 lbnum += 1; 1135 len -= lb_size; 1136 1137 /* are we linking to a new piece? */ 1138 if (dscr && lvint->next_extent.len) { 1139 len = udf_rw32(lvint->next_extent.len); 1140 lbnum = udf_rw32(lvint->next_extent.loc); 1141 1142 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1143 /* IEK! segment link full... */ 1144 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1145 error = EINVAL; 1146 } else { 1147 trace++; 1148 trace_len++; 1149 1150 trace->start = lbnum; 1151 trace->end = lbnum + len/lb_size; 1152 trace->pos = 0; 1153 trace->wpos = 0; 1154 } 1155 } 1156 } 1157 1158 /* clean up the mess, esp. when there is an error */ 1159 if (dscr) 1160 free(dscr, M_UDFVOLD); 1161 1162 if (error && lvint) { 1163 free(lvint, M_UDFVOLD); 1164 lvint = NULL; 1165 } 1166 1167 if (!lvint) 1168 error = ENOENT; 1169 1170 ump->logvol_integrity = lvint; 1171 return error; 1172 } 1173 1174 1175 static int 1176 udf_loose_lvint_history(struct udf_mount *ump) 1177 { 1178 union dscrptr **bufs, *dscr, *last_dscr; 1179 struct udf_lvintq *trace, *in_trace, *out_trace; 1180 struct logvol_int_desc *lvint; 1181 uint32_t in_ext, in_pos, in_len; 1182 uint32_t out_ext, out_wpos, out_len; 1183 uint32_t lb_size, packet_size, lb_num; 1184 uint32_t len, start; 1185 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1186 int losing; 1187 int error; 1188 1189 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1190 1191 lb_size = udf_rw32(ump->logical_vol->lb_size); 1192 packet_size = ump->data_track.packet_size; /* XXX data track */ 1193 1194 /* search smallest extent */ 1195 trace = &ump->lvint_trace[0]; 1196 minext = trace->end - trace->start; 1197 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1198 trace = &ump->lvint_trace[ext]; 1199 extlen = trace->end - trace->start; 1200 if (extlen == 0) 1201 break; 1202 minext = MIN(minext, extlen); 1203 } 1204 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1205 /* no sense wiping all */ 1206 if (losing == minext) 1207 losing--; 1208 1209 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1210 1211 /* get buffer for pieces */ 1212 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1213 1214 in_ext = 0; 1215 in_pos = losing; 1216 in_trace = &ump->lvint_trace[in_ext]; 1217 in_len = in_trace->end - in_trace->start; 1218 out_ext = 0; 1219 out_wpos = 0; 1220 out_trace = &ump->lvint_trace[out_ext]; 1221 out_len = out_trace->end - out_trace->start; 1222 1223 last_dscr = NULL; 1224 for(;;) { 1225 out_trace->pos = out_wpos; 1226 out_trace->wpos = out_trace->pos; 1227 if (in_pos >= in_len) { 1228 in_ext++; 1229 in_pos = 0; 1230 in_trace = &ump->lvint_trace[in_ext]; 1231 in_len = in_trace->end - in_trace->start; 1232 } 1233 if (out_wpos >= out_len) { 1234 out_ext++; 1235 out_wpos = 0; 1236 out_trace = &ump->lvint_trace[out_ext]; 1237 out_len = out_trace->end - out_trace->start; 1238 } 1239 /* copy overlap contents */ 1240 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1241 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1242 if (cpy_len == 0) 1243 break; 1244 1245 /* copy */ 1246 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1247 for (cnt = 0; cnt < cpy_len; cnt++) { 1248 /* read in our integrity descriptor */ 1249 lb_num = in_trace->start + in_pos + cnt; 1250 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1251 &dscr); 1252 if (error) { 1253 /* copy last one */ 1254 dscr = last_dscr; 1255 } 1256 bufs[cnt] = dscr; 1257 if (!error) { 1258 if (dscr == NULL) { 1259 out_trace->pos = out_wpos + cnt; 1260 out_trace->wpos = out_trace->pos; 1261 break; /* empty terminates */ 1262 } 1263 dscr_type = udf_rw16(dscr->tag.id); 1264 if (dscr_type == TAGID_TERM) { 1265 out_trace->pos = out_wpos + cnt; 1266 out_trace->wpos = out_trace->pos; 1267 break; /* clean terminator */ 1268 } 1269 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1270 panic( "UDF integrity sequence " 1271 "corrupted while mounted!\n"); 1272 } 1273 last_dscr = dscr; 1274 } 1275 } 1276 1277 /* patch up if first entry was on error */ 1278 if (bufs[0] == NULL) { 1279 for (cnt = 0; cnt < cpy_len; cnt++) 1280 if (bufs[cnt] != NULL) 1281 break; 1282 last_dscr = bufs[cnt]; 1283 for (; cnt > 0; cnt--) { 1284 bufs[cnt] = last_dscr; 1285 } 1286 } 1287 1288 /* glue + write out */ 1289 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1290 for (cnt = 0; cnt < cpy_len; cnt++) { 1291 lb_num = out_trace->start + out_wpos + cnt; 1292 lvint = &bufs[cnt]->lvid; 1293 1294 /* set continuation */ 1295 len = 0; 1296 start = 0; 1297 if (out_wpos + cnt == out_len) { 1298 /* get continuation */ 1299 trace = &ump->lvint_trace[out_ext+1]; 1300 len = trace->end - trace->start; 1301 start = trace->start; 1302 } 1303 lvint->next_extent.len = udf_rw32(len); 1304 lvint->next_extent.loc = udf_rw32(start); 1305 1306 lb_num = trace->start + trace->wpos; 1307 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1308 bufs[cnt], lb_num, lb_num); 1309 DPRINTFIF(VOLUMES, error, 1310 ("error writing lvint lb_num\n")); 1311 } 1312 1313 /* free non repeating descriptors */ 1314 last_dscr = NULL; 1315 for (cnt = 0; cnt < cpy_len; cnt++) { 1316 if (bufs[cnt] != last_dscr) 1317 free(bufs[cnt], M_UDFVOLD); 1318 last_dscr = bufs[cnt]; 1319 } 1320 1321 /* advance */ 1322 in_pos += cpy_len; 1323 out_wpos += cpy_len; 1324 } 1325 1326 free(bufs, M_TEMP); 1327 1328 return 0; 1329 } 1330 1331 1332 static int 1333 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1334 { 1335 struct udf_lvintq *trace; 1336 struct timeval now_v; 1337 struct timespec now_s; 1338 uint32_t sector; 1339 int logvol_integrity; 1340 int space, error; 1341 1342 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1343 1344 again: 1345 /* get free space in last chunk */ 1346 trace = ump->lvint_trace; 1347 while (trace->wpos > (trace->end - trace->start)) { 1348 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1349 "wpos = %d\n", trace->start, trace->end, 1350 trace->pos, trace->wpos)); 1351 trace++; 1352 } 1353 1354 /* check if there is space to append */ 1355 space = (trace->end - trace->start) - trace->wpos; 1356 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1357 "space = %d\n", trace->start, trace->end, trace->pos, 1358 trace->wpos, space)); 1359 1360 /* get state */ 1361 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1362 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1363 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1364 /* don't allow this logvol to be opened */ 1365 /* TODO extent LVINT space if possible */ 1366 return EROFS; 1367 } 1368 } 1369 1370 if (space < 1) { 1371 if (lvflag & UDF_APPENDONLY_LVINT) 1372 return EROFS; 1373 /* loose history by re-writing extents */ 1374 error = udf_loose_lvint_history(ump); 1375 if (error) 1376 return error; 1377 goto again; 1378 } 1379 1380 /* update our integrity descriptor to identify us and timestamp it */ 1381 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1382 microtime(&now_v); 1383 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1384 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1385 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1386 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1387 1388 /* writeout integrity descriptor */ 1389 sector = trace->start + trace->wpos; 1390 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1391 (union dscrptr *) ump->logvol_integrity, 1392 sector, sector); 1393 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1394 if (error) 1395 return error; 1396 1397 /* advance write position */ 1398 trace->wpos++; space--; 1399 if (space >= 1) { 1400 /* append terminator */ 1401 sector = trace->start + trace->wpos; 1402 error = udf_write_terminator(ump, sector); 1403 1404 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1405 } 1406 1407 space = (trace->end - trace->start) - trace->wpos; 1408 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1409 "space = %d\n", trace->start, trace->end, trace->pos, 1410 trace->wpos, space)); 1411 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1412 "successfull\n")); 1413 1414 return error; 1415 } 1416 1417 /* --------------------------------------------------------------------- */ 1418 1419 static int 1420 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1421 { 1422 union dscrptr *dscr; 1423 /* struct udf_args *args = &ump->mount_args; */ 1424 struct part_desc *partd; 1425 struct part_hdr_desc *parthdr; 1426 struct udf_bitmap *bitmap; 1427 uint32_t phys_part; 1428 uint32_t lb_num, len; 1429 int error, dscr_type; 1430 1431 /* unallocated space map */ 1432 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1433 partd = ump->partitions[phys_part]; 1434 if (partd == NULL) 1435 continue; 1436 parthdr = &partd->_impl_use.part_hdr; 1437 1438 lb_num = udf_rw32(partd->start_loc); 1439 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1440 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1441 if (len == 0) 1442 continue; 1443 1444 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1445 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1446 if (!error && dscr) { 1447 /* analyse */ 1448 dscr_type = udf_rw16(dscr->tag.id); 1449 if (dscr_type == TAGID_SPACE_BITMAP) { 1450 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1451 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1452 1453 /* fill in ump->part_unalloc_bits */ 1454 bitmap = &ump->part_unalloc_bits[phys_part]; 1455 bitmap->blob = (uint8_t *) dscr; 1456 bitmap->bits = dscr->sbd.data; 1457 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1458 bitmap->pages = NULL; /* TODO */ 1459 bitmap->data_pos = 0; 1460 bitmap->metadata_pos = 0; 1461 } else { 1462 free(dscr, M_UDFVOLD); 1463 1464 printf( "UDF mount: error reading unallocated " 1465 "space bitmap\n"); 1466 return EROFS; 1467 } 1468 } else { 1469 /* blank not allowed */ 1470 printf("UDF mount: blank unallocated space bitmap\n"); 1471 return EROFS; 1472 } 1473 } 1474 1475 /* unallocated space table (not supported) */ 1476 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1477 partd = ump->partitions[phys_part]; 1478 if (partd == NULL) 1479 continue; 1480 parthdr = &partd->_impl_use.part_hdr; 1481 1482 len = udf_rw32(parthdr->unalloc_space_table.len); 1483 if (len) { 1484 printf("UDF mount: space tables not supported\n"); 1485 return EROFS; 1486 } 1487 } 1488 1489 /* freed space map */ 1490 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1491 partd = ump->partitions[phys_part]; 1492 if (partd == NULL) 1493 continue; 1494 parthdr = &partd->_impl_use.part_hdr; 1495 1496 /* freed space map */ 1497 lb_num = udf_rw32(partd->start_loc); 1498 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1499 len = udf_rw32(parthdr->freed_space_bitmap.len); 1500 if (len == 0) 1501 continue; 1502 1503 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1504 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1505 if (!error && dscr) { 1506 /* analyse */ 1507 dscr_type = udf_rw16(dscr->tag.id); 1508 if (dscr_type == TAGID_SPACE_BITMAP) { 1509 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1510 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1511 1512 /* fill in ump->part_freed_bits */ 1513 bitmap = &ump->part_unalloc_bits[phys_part]; 1514 bitmap->blob = (uint8_t *) dscr; 1515 bitmap->bits = dscr->sbd.data; 1516 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1517 bitmap->pages = NULL; /* TODO */ 1518 bitmap->data_pos = 0; 1519 bitmap->metadata_pos = 0; 1520 } else { 1521 free(dscr, M_UDFVOLD); 1522 1523 printf( "UDF mount: error reading freed " 1524 "space bitmap\n"); 1525 return EROFS; 1526 } 1527 } else { 1528 /* blank not allowed */ 1529 printf("UDF mount: blank freed space bitmap\n"); 1530 return EROFS; 1531 } 1532 } 1533 1534 /* freed space table (not supported) */ 1535 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1536 partd = ump->partitions[phys_part]; 1537 if (partd == NULL) 1538 continue; 1539 parthdr = &partd->_impl_use.part_hdr; 1540 1541 len = udf_rw32(parthdr->freed_space_table.len); 1542 if (len) { 1543 printf("UDF mount: space tables not supported\n"); 1544 return EROFS; 1545 } 1546 } 1547 1548 return 0; 1549 } 1550 1551 1552 /* TODO implement async writeout */ 1553 int 1554 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1555 { 1556 union dscrptr *dscr; 1557 /* struct udf_args *args = &ump->mount_args; */ 1558 struct part_desc *partd; 1559 struct part_hdr_desc *parthdr; 1560 uint32_t phys_part; 1561 uint32_t lb_num, len, ptov; 1562 int error_all, error; 1563 1564 error_all = 0; 1565 /* unallocated space map */ 1566 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1567 partd = ump->partitions[phys_part]; 1568 if (partd == NULL) 1569 continue; 1570 parthdr = &partd->_impl_use.part_hdr; 1571 1572 ptov = udf_rw32(partd->start_loc); 1573 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1574 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1575 if (len == 0) 1576 continue; 1577 1578 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1579 lb_num + ptov)); 1580 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1581 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1582 (union dscrptr *) dscr, 1583 ptov + lb_num, lb_num); 1584 if (error) { 1585 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1586 error_all = error; 1587 } 1588 } 1589 1590 /* freed space map */ 1591 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1592 partd = ump->partitions[phys_part]; 1593 if (partd == NULL) 1594 continue; 1595 parthdr = &partd->_impl_use.part_hdr; 1596 1597 /* freed space map */ 1598 ptov = udf_rw32(partd->start_loc); 1599 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1600 len = udf_rw32(parthdr->freed_space_bitmap.len); 1601 if (len == 0) 1602 continue; 1603 1604 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1605 lb_num + ptov)); 1606 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1607 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1608 (union dscrptr *) dscr, 1609 ptov + lb_num, lb_num); 1610 if (error) { 1611 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1612 error_all = error; 1613 } 1614 } 1615 1616 return error_all; 1617 } 1618 1619 1620 static int 1621 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1622 { 1623 struct udf_node *bitmap_node; 1624 union dscrptr *dscr; 1625 struct udf_bitmap *bitmap; 1626 uint64_t inflen; 1627 int error, dscr_type; 1628 1629 bitmap_node = ump->metadatabitmap_node; 1630 1631 /* only read in when metadata bitmap node is read in */ 1632 if (bitmap_node == NULL) 1633 return 0; 1634 1635 if (bitmap_node->fe) { 1636 inflen = udf_rw64(bitmap_node->fe->inf_len); 1637 } else { 1638 KASSERT(bitmap_node->efe); 1639 inflen = udf_rw64(bitmap_node->efe->inf_len); 1640 } 1641 1642 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1643 "%"PRIu64" bytes\n", inflen)); 1644 1645 /* allocate space for bitmap */ 1646 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1647 if (!dscr) 1648 return ENOMEM; 1649 1650 /* set vnode type to regular file or we can't read from it! */ 1651 bitmap_node->vnode->v_type = VREG; 1652 1653 /* read in complete metadata bitmap file */ 1654 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1655 dscr, 1656 inflen, 0, 1657 UIO_SYSSPACE, 1658 IO_SYNC | IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1659 NULL, NULL); 1660 if (error) { 1661 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1662 goto errorout; 1663 } 1664 1665 /* analyse */ 1666 dscr_type = udf_rw16(dscr->tag.id); 1667 if (dscr_type == TAGID_SPACE_BITMAP) { 1668 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1669 ump->metadata_unalloc_dscr = &dscr->sbd; 1670 1671 /* fill in bitmap bits */ 1672 bitmap = &ump->metadata_unalloc_bits; 1673 bitmap->blob = (uint8_t *) dscr; 1674 bitmap->bits = dscr->sbd.data; 1675 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1676 bitmap->pages = NULL; /* TODO */ 1677 bitmap->data_pos = 0; 1678 bitmap->metadata_pos = 0; 1679 } else { 1680 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1681 goto errorout; 1682 } 1683 1684 return 0; 1685 1686 errorout: 1687 free(dscr, M_UDFVOLD); 1688 printf( "UDF mount: error reading unallocated " 1689 "space bitmap for metadata partition\n"); 1690 return EROFS; 1691 } 1692 1693 1694 int 1695 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1696 { 1697 struct udf_node *bitmap_node; 1698 union dscrptr *dscr; 1699 uint64_t inflen, new_inflen; 1700 int dummy, error; 1701 1702 bitmap_node = ump->metadatabitmap_node; 1703 1704 /* only write out when metadata bitmap node is known */ 1705 if (bitmap_node == NULL) 1706 return 0; 1707 1708 if (bitmap_node->fe) { 1709 inflen = udf_rw64(bitmap_node->fe->inf_len); 1710 } else { 1711 KASSERT(bitmap_node->efe); 1712 inflen = udf_rw64(bitmap_node->efe->inf_len); 1713 } 1714 1715 /* reduce length to zero */ 1716 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1717 new_inflen = udf_tagsize(dscr, 1); 1718 1719 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap from " 1720 "%"PRIu64" to %"PRIu64" bytes\n", inflen, new_inflen)); 1721 1722 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1723 if (error) 1724 printf("Error resizing metadata space bitmap\n"); 1725 1726 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1727 dscr, 1728 new_inflen, 0, 1729 UIO_SYSSPACE, 1730 IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1731 NULL, NULL); 1732 1733 bitmap_node->i_flags |= IN_MODIFIED; 1734 vflushbuf(bitmap_node->vnode, 1 /* sync */); 1735 1736 error = VOP_FSYNC(bitmap_node->vnode, 1737 FSCRED, FSYNC_WAIT, 0, 0); 1738 1739 if (error) 1740 printf( "Error writing out metadata partition unalloced " 1741 "space bitmap!\n"); 1742 1743 return error; 1744 } 1745 1746 1747 /* --------------------------------------------------------------------- */ 1748 1749 /* 1750 * Checks if ump's vds information is correct and complete 1751 */ 1752 1753 int 1754 udf_process_vds(struct udf_mount *ump) { 1755 union udf_pmap *mapping; 1756 /* struct udf_args *args = &ump->mount_args; */ 1757 struct logvol_int_desc *lvint; 1758 struct udf_logvol_info *lvinfo; 1759 struct part_desc *part; 1760 uint32_t n_pm, mt_l; 1761 uint8_t *pmap_pos; 1762 char *domain_name, *map_name; 1763 const char *check_name; 1764 char bits[128]; 1765 int pmap_stype, pmap_size; 1766 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1767 int n_phys, n_virt, n_spar, n_meta; 1768 int len, error; 1769 1770 if (ump == NULL) 1771 return ENOENT; 1772 1773 /* we need at least an anchor (trivial, but for safety) */ 1774 if (ump->anchors[0] == NULL) 1775 return EINVAL; 1776 1777 /* we need at least one primary and one logical volume descriptor */ 1778 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1779 return EINVAL; 1780 1781 /* we need at least one partition descriptor */ 1782 if (ump->partitions[0] == NULL) 1783 return EINVAL; 1784 1785 /* check logical volume sector size verses device sector size */ 1786 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1787 printf("UDF mount: format violation, lb_size != sector size\n"); 1788 return EINVAL; 1789 } 1790 1791 /* check domain name */ 1792 domain_name = ump->logical_vol->domain_id.id; 1793 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1794 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1795 return EINVAL; 1796 } 1797 1798 /* retrieve logical volume integrity sequence */ 1799 error = udf_retrieve_lvint(ump); 1800 1801 /* 1802 * We need at least one logvol integrity descriptor recorded. Note 1803 * that its OK to have an open logical volume integrity here. The VAT 1804 * will close/update the integrity. 1805 */ 1806 if (ump->logvol_integrity == NULL) 1807 return EINVAL; 1808 1809 /* process derived structures */ 1810 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1811 lvint = ump->logvol_integrity; 1812 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1813 ump->logvol_info = lvinfo; 1814 1815 /* TODO check udf versions? */ 1816 1817 /* 1818 * check logvol mappings: effective virt->log partmap translation 1819 * check and recording of the mapping results. Saves expensive 1820 * strncmp() in tight places. 1821 */ 1822 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1823 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1824 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1825 pmap_pos = ump->logical_vol->maps; 1826 1827 if (n_pm > UDF_PMAPS) { 1828 printf("UDF mount: too many mappings\n"); 1829 return EINVAL; 1830 } 1831 1832 /* count types and set partition numbers */ 1833 ump->data_part = ump->node_part = ump->fids_part = 0; 1834 n_phys = n_virt = n_spar = n_meta = 0; 1835 for (log_part = 0; log_part < n_pm; log_part++) { 1836 mapping = (union udf_pmap *) pmap_pos; 1837 pmap_stype = pmap_pos[0]; 1838 pmap_size = pmap_pos[1]; 1839 switch (pmap_stype) { 1840 case 1: /* physical mapping */ 1841 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1842 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1843 pmap_type = UDF_VTOP_TYPE_PHYS; 1844 n_phys++; 1845 ump->data_part = log_part; 1846 ump->node_part = log_part; 1847 ump->fids_part = log_part; 1848 break; 1849 case 2: /* virtual/sparable/meta mapping */ 1850 map_name = mapping->pm2.part_id.id; 1851 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1852 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1853 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1854 len = UDF_REGID_ID_SIZE; 1855 1856 check_name = "*UDF Virtual Partition"; 1857 if (strncmp(map_name, check_name, len) == 0) { 1858 pmap_type = UDF_VTOP_TYPE_VIRT; 1859 n_virt++; 1860 ump->node_part = log_part; 1861 break; 1862 } 1863 check_name = "*UDF Sparable Partition"; 1864 if (strncmp(map_name, check_name, len) == 0) { 1865 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1866 n_spar++; 1867 ump->data_part = log_part; 1868 ump->node_part = log_part; 1869 ump->fids_part = log_part; 1870 break; 1871 } 1872 check_name = "*UDF Metadata Partition"; 1873 if (strncmp(map_name, check_name, len) == 0) { 1874 pmap_type = UDF_VTOP_TYPE_META; 1875 n_meta++; 1876 ump->node_part = log_part; 1877 ump->fids_part = log_part; 1878 break; 1879 } 1880 break; 1881 default: 1882 return EINVAL; 1883 } 1884 1885 /* 1886 * BUGALERT: some rogue implementations use random physical 1887 * partion numbers to break other implementations so lookup 1888 * the number. 1889 */ 1890 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1891 part = ump->partitions[phys_part]; 1892 if (part == NULL) 1893 continue; 1894 if (udf_rw16(part->part_num) == raw_phys_part) 1895 break; 1896 } 1897 1898 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1899 raw_phys_part, phys_part, pmap_type)); 1900 1901 if (phys_part == UDF_PARTITIONS) 1902 return EINVAL; 1903 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1904 return EINVAL; 1905 1906 ump->vtop [log_part] = phys_part; 1907 ump->vtop_tp[log_part] = pmap_type; 1908 1909 pmap_pos += pmap_size; 1910 } 1911 /* not winning the beauty contest */ 1912 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1913 1914 /* test some basic UDF assertions/requirements */ 1915 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1916 return EINVAL; 1917 1918 if (n_virt) { 1919 if ((n_phys == 0) || n_spar || n_meta) 1920 return EINVAL; 1921 } 1922 if (n_spar + n_phys == 0) 1923 return EINVAL; 1924 1925 /* select allocation type for each logical partition */ 1926 for (log_part = 0; log_part < n_pm; log_part++) { 1927 maps_on = ump->vtop[log_part]; 1928 switch (ump->vtop_tp[log_part]) { 1929 case UDF_VTOP_TYPE_PHYS : 1930 assert(maps_on == log_part); 1931 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1932 break; 1933 case UDF_VTOP_TYPE_VIRT : 1934 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 1935 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1936 break; 1937 case UDF_VTOP_TYPE_SPARABLE : 1938 assert(maps_on == log_part); 1939 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1940 break; 1941 case UDF_VTOP_TYPE_META : 1942 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 1943 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1944 /* special case for UDF 2.60 */ 1945 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 1946 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1947 } 1948 break; 1949 default: 1950 panic("bad alloction type in udf's ump->vtop\n"); 1951 } 1952 } 1953 1954 /* determine logical volume open/closure actions */ 1955 if (n_virt) { 1956 ump->lvopen = 0; 1957 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1958 ump->lvopen |= UDF_OPEN_SESSION ; 1959 ump->lvclose = UDF_WRITE_VAT; 1960 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1961 ump->lvclose |= UDF_CLOSE_SESSION; 1962 } else { 1963 /* `normal' rewritable or non sequential media */ 1964 ump->lvopen = UDF_WRITE_LVINT; 1965 ump->lvclose = UDF_WRITE_LVINT; 1966 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1967 ump->lvopen |= UDF_APPENDONLY_LVINT; 1968 } 1969 1970 /* 1971 * Determine sheduler error behaviour. For virtual partions, update 1972 * the trackinfo; for sparable partitions replace a whole block on the 1973 * sparable table. Allways requeue. 1974 */ 1975 ump->lvreadwrite = 0; 1976 if (n_virt) 1977 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1978 if (n_spar) 1979 ump->lvreadwrite = UDF_REMAP_BLOCK; 1980 1981 /* 1982 * Select our sheduler 1983 */ 1984 ump->strategy = &udf_strat_rmw; 1985 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1986 ump->strategy = &udf_strat_sequential; 1987 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1988 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1989 ump->strategy = &udf_strat_direct; 1990 if (n_spar) 1991 ump->strategy = &udf_strat_rmw; 1992 1993 #if 0 1994 /* read-only access won't benefit from the other shedulers */ 1995 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 1996 ump->strategy = &udf_strat_direct; 1997 #endif 1998 1999 /* print results */ 2000 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2001 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2002 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2003 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2004 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2005 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2006 2007 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 2008 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2009 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 2010 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2011 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 2012 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2013 2014 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2015 (ump->strategy == &udf_strat_direct) ? "Direct" : 2016 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2017 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2018 2019 /* signal its OK for now */ 2020 return 0; 2021 } 2022 2023 /* --------------------------------------------------------------------- */ 2024 2025 /* 2026 * Update logical volume name in all structures that keep a record of it. We 2027 * use memmove since each of them might be specified as a source. 2028 * 2029 * Note that it doesn't update the VAT structure! 2030 */ 2031 2032 static void 2033 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2034 { 2035 struct logvol_desc *lvd = NULL; 2036 struct fileset_desc *fsd = NULL; 2037 struct udf_lv_info *lvi = NULL; 2038 2039 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2040 lvd = ump->logical_vol; 2041 fsd = ump->fileset_desc; 2042 if (ump->implementation) 2043 lvi = &ump->implementation->_impl_use.lv_info; 2044 2045 /* logvol's id might be specified as origional so use memmove here */ 2046 memmove(lvd->logvol_id, logvol_id, 128); 2047 if (fsd) 2048 memmove(fsd->logvol_id, logvol_id, 128); 2049 if (lvi) 2050 memmove(lvi->logvol_id, logvol_id, 128); 2051 } 2052 2053 /* --------------------------------------------------------------------- */ 2054 2055 void 2056 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2057 uint32_t sector) 2058 { 2059 assert(ump->logical_vol); 2060 2061 tag->id = udf_rw16(tagid); 2062 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2063 tag->cksum = 0; 2064 tag->reserved = 0; 2065 tag->serial_num = ump->logical_vol->tag.serial_num; 2066 tag->tag_loc = udf_rw32(sector); 2067 } 2068 2069 2070 uint64_t 2071 udf_advance_uniqueid(struct udf_mount *ump) 2072 { 2073 uint64_t unique_id; 2074 2075 mutex_enter(&ump->logvol_mutex); 2076 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2077 if (unique_id < 0x10) 2078 unique_id = 0x10; 2079 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2080 mutex_exit(&ump->logvol_mutex); 2081 2082 return unique_id; 2083 } 2084 2085 2086 static void 2087 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2088 { 2089 struct udf_mount *ump = udf_node->ump; 2090 uint32_t num_dirs, num_files; 2091 int udf_file_type; 2092 2093 /* get file type */ 2094 if (udf_node->fe) { 2095 udf_file_type = udf_node->fe->icbtag.file_type; 2096 } else { 2097 udf_file_type = udf_node->efe->icbtag.file_type; 2098 } 2099 2100 /* adjust file count */ 2101 mutex_enter(&ump->allocate_mutex); 2102 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2103 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2104 ump->logvol_info->num_directories = 2105 udf_rw32((num_dirs + sign)); 2106 } else { 2107 num_files = udf_rw32(ump->logvol_info->num_files); 2108 ump->logvol_info->num_files = 2109 udf_rw32((num_files + sign)); 2110 } 2111 mutex_exit(&ump->allocate_mutex); 2112 } 2113 2114 2115 void 2116 udf_osta_charset(struct charspec *charspec) 2117 { 2118 bzero(charspec, sizeof(struct charspec)); 2119 charspec->type = 0; 2120 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2121 } 2122 2123 2124 /* first call udf_set_regid and then the suffix */ 2125 void 2126 udf_set_regid(struct regid *regid, char const *name) 2127 { 2128 bzero(regid, sizeof(struct regid)); 2129 regid->flags = 0; /* not dirty and not protected */ 2130 strcpy((char *) regid->id, name); 2131 } 2132 2133 2134 void 2135 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2136 { 2137 uint16_t *ver; 2138 2139 ver = (uint16_t *) regid->id_suffix; 2140 *ver = ump->logvol_info->min_udf_readver; 2141 } 2142 2143 2144 void 2145 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2146 { 2147 uint16_t *ver; 2148 2149 ver = (uint16_t *) regid->id_suffix; 2150 *ver = ump->logvol_info->min_udf_readver; 2151 2152 regid->id_suffix[2] = 4; /* unix */ 2153 regid->id_suffix[3] = 8; /* NetBSD */ 2154 } 2155 2156 2157 void 2158 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2159 { 2160 regid->id_suffix[0] = 4; /* unix */ 2161 regid->id_suffix[1] = 8; /* NetBSD */ 2162 } 2163 2164 2165 void 2166 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2167 { 2168 regid->id_suffix[0] = APP_VERSION_MAIN; 2169 regid->id_suffix[1] = APP_VERSION_SUB; 2170 } 2171 2172 static int 2173 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2174 struct long_ad *parent, uint64_t unique_id) 2175 { 2176 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2177 int fidsize = 40; 2178 2179 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2180 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2181 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2182 fid->icb = *parent; 2183 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2184 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2185 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2186 2187 return fidsize; 2188 } 2189 2190 /* --------------------------------------------------------------------- */ 2191 2192 /* 2193 * Extended attribute support. UDF knows of 3 places for extended attributes: 2194 * 2195 * (a) inside the file's (e)fe in the length of the extended attribute area 2196 * before the allocation descriptors/filedata 2197 * 2198 * (b) in a file referenced by (e)fe->ext_attr_icb and 2199 * 2200 * (c) in the e(fe)'s associated stream directory that can hold various 2201 * sub-files. In the stream directory a few fixed named subfiles are reserved 2202 * for NT/Unix ACL's and OS/2 attributes. 2203 * 2204 * NOTE: Extended attributes are read randomly but allways written 2205 * *atomicaly*. For ACL's this interface is propably different but not known 2206 * to me yet. 2207 * 2208 * Order of extended attributes in a space : 2209 * ECMA 167 EAs 2210 * Non block aligned Implementation Use EAs 2211 * Block aligned Implementation Use EAs 2212 * Application Use EAs 2213 */ 2214 2215 static int 2216 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2217 { 2218 uint16_t *spos; 2219 2220 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2221 /* checksum valid? */ 2222 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2223 spos = (uint16_t *) implext->data; 2224 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2225 return EINVAL; 2226 } 2227 return 0; 2228 } 2229 2230 static void 2231 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2232 { 2233 uint16_t *spos; 2234 2235 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2236 /* set checksum */ 2237 spos = (uint16_t *) implext->data; 2238 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2239 } 2240 } 2241 2242 2243 int 2244 udf_extattr_search_intern(struct udf_node *node, 2245 uint32_t sattr, char const *sattrname, 2246 uint32_t *offsetp, uint32_t *lengthp) 2247 { 2248 struct extattrhdr_desc *eahdr; 2249 struct extattr_entry *attrhdr; 2250 struct impl_extattr_entry *implext; 2251 uint32_t offset, a_l, sector_size; 2252 int32_t l_ea; 2253 uint8_t *pos; 2254 int error; 2255 2256 /* get mountpoint */ 2257 sector_size = node->ump->discinfo.sector_size; 2258 2259 /* get information from fe/efe */ 2260 if (node->fe) { 2261 l_ea = udf_rw32(node->fe->l_ea); 2262 eahdr = (struct extattrhdr_desc *) node->fe->data; 2263 } else { 2264 assert(node->efe); 2265 l_ea = udf_rw32(node->efe->l_ea); 2266 eahdr = (struct extattrhdr_desc *) node->efe->data; 2267 } 2268 2269 /* something recorded here? */ 2270 if (l_ea == 0) 2271 return ENOENT; 2272 2273 /* check extended attribute tag; what to do if it fails? */ 2274 error = udf_check_tag(eahdr); 2275 if (error) 2276 return EINVAL; 2277 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2278 return EINVAL; 2279 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2280 if (error) 2281 return EINVAL; 2282 2283 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2284 2285 /* looking for Ecma-167 attributes? */ 2286 offset = sizeof(struct extattrhdr_desc); 2287 2288 /* looking for either implemenation use or application use */ 2289 if (sattr == 2048) { /* [4/48.10.8] */ 2290 offset = udf_rw32(eahdr->impl_attr_loc); 2291 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2292 return ENOENT; 2293 } 2294 if (sattr == 65536) { /* [4/48.10.9] */ 2295 offset = udf_rw32(eahdr->appl_attr_loc); 2296 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2297 return ENOENT; 2298 } 2299 2300 /* paranoia check offset and l_ea */ 2301 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2302 return EINVAL; 2303 2304 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2305 2306 /* find our extended attribute */ 2307 l_ea -= offset; 2308 pos = (uint8_t *) eahdr + offset; 2309 2310 while (l_ea >= sizeof(struct extattr_entry)) { 2311 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2312 attrhdr = (struct extattr_entry *) pos; 2313 implext = (struct impl_extattr_entry *) pos; 2314 2315 /* get complete attribute length and check for roque values */ 2316 a_l = udf_rw32(attrhdr->a_l); 2317 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2318 udf_rw32(attrhdr->type), 2319 attrhdr->subtype, a_l, l_ea)); 2320 if ((a_l == 0) || (a_l > l_ea)) 2321 return EINVAL; 2322 2323 if (attrhdr->type != sattr) 2324 goto next_attribute; 2325 2326 /* we might have found it! */ 2327 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2328 *offsetp = offset; 2329 *lengthp = a_l; 2330 return 0; /* success */ 2331 } 2332 2333 /* 2334 * Implementation use and application use extended attributes 2335 * have a name to identify. They share the same structure only 2336 * UDF implementation use extended attributes have a checksum 2337 * we need to check 2338 */ 2339 2340 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2341 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2342 /* we have found our appl/implementation attribute */ 2343 *offsetp = offset; 2344 *lengthp = a_l; 2345 return 0; /* success */ 2346 } 2347 2348 next_attribute: 2349 /* next attribute */ 2350 pos += a_l; 2351 l_ea -= a_l; 2352 offset += a_l; 2353 } 2354 /* not found */ 2355 return ENOENT; 2356 } 2357 2358 2359 static void 2360 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2361 struct extattr_entry *extattr) 2362 { 2363 struct file_entry *fe; 2364 struct extfile_entry *efe; 2365 struct extattrhdr_desc *extattrhdr; 2366 struct impl_extattr_entry *implext; 2367 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2368 uint32_t *l_eap, l_ad; 2369 uint16_t *spos; 2370 uint8_t *bpos, *data; 2371 2372 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2373 fe = &dscr->fe; 2374 data = fe->data; 2375 l_eap = &fe->l_ea; 2376 l_ad = udf_rw32(fe->l_ad); 2377 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2378 efe = &dscr->efe; 2379 data = efe->data; 2380 l_eap = &efe->l_ea; 2381 l_ad = udf_rw32(efe->l_ad); 2382 } else { 2383 panic("Bad tag passed to udf_extattr_insert_internal"); 2384 } 2385 2386 /* can't append already written to file descriptors yet */ 2387 assert(l_ad == 0); 2388 2389 /* should have a header! */ 2390 extattrhdr = (struct extattrhdr_desc *) data; 2391 l_ea = udf_rw32(*l_eap); 2392 if (l_ea == 0) { 2393 /* create empty extended attribute header */ 2394 exthdr_len = sizeof(struct extattrhdr_desc); 2395 2396 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2397 /* loc */ 0); 2398 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2399 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2400 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2401 2402 /* record extended attribute header length */ 2403 l_ea = exthdr_len; 2404 *l_eap = udf_rw32(l_ea); 2405 } 2406 2407 /* extract locations */ 2408 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2409 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2410 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2411 impl_attr_loc = l_ea; 2412 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2413 appl_attr_loc = l_ea; 2414 2415 /* Ecma 167 EAs */ 2416 if (udf_rw32(extattr->type) < 2048) { 2417 assert(impl_attr_loc == l_ea); 2418 assert(appl_attr_loc == l_ea); 2419 } 2420 2421 /* implementation use extended attributes */ 2422 if (udf_rw32(extattr->type) == 2048) { 2423 assert(appl_attr_loc == l_ea); 2424 2425 /* calculate and write extended attribute header checksum */ 2426 implext = (struct impl_extattr_entry *) extattr; 2427 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2428 spos = (uint16_t *) implext->data; 2429 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2430 } 2431 2432 /* application use extended attributes */ 2433 assert(udf_rw32(extattr->type) != 65536); 2434 assert(appl_attr_loc == l_ea); 2435 2436 /* append the attribute at the end of the current space */ 2437 bpos = data + udf_rw32(*l_eap); 2438 a_l = udf_rw32(extattr->a_l); 2439 2440 /* update impl. attribute locations */ 2441 if (udf_rw32(extattr->type) < 2048) { 2442 impl_attr_loc = l_ea + a_l; 2443 appl_attr_loc = l_ea + a_l; 2444 } 2445 if (udf_rw32(extattr->type) == 2048) { 2446 appl_attr_loc = l_ea + a_l; 2447 } 2448 2449 /* copy and advance */ 2450 memcpy(bpos, extattr, a_l); 2451 l_ea += a_l; 2452 *l_eap = udf_rw32(l_ea); 2453 2454 /* do the `dance` again backwards */ 2455 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2456 if (impl_attr_loc == l_ea) 2457 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2458 if (appl_attr_loc == l_ea) 2459 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2460 } 2461 2462 /* store offsets */ 2463 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2464 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2465 } 2466 2467 2468 /* --------------------------------------------------------------------- */ 2469 2470 static int 2471 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2472 { 2473 struct udf_mount *ump; 2474 struct udf_logvol_info *lvinfo; 2475 struct impl_extattr_entry *implext; 2476 struct vatlvext_extattr_entry lvext; 2477 const char *extstr = "*UDF VAT LVExtension"; 2478 uint64_t vat_uniqueid; 2479 uint32_t offset, a_l; 2480 uint8_t *ea_start, *lvextpos; 2481 int error; 2482 2483 /* get mountpoint and lvinfo */ 2484 ump = vat_node->ump; 2485 lvinfo = ump->logvol_info; 2486 2487 /* get information from fe/efe */ 2488 if (vat_node->fe) { 2489 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2490 ea_start = vat_node->fe->data; 2491 } else { 2492 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2493 ea_start = vat_node->efe->data; 2494 } 2495 2496 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2497 if (error) 2498 return error; 2499 2500 implext = (struct impl_extattr_entry *) (ea_start + offset); 2501 error = udf_impl_extattr_check(implext); 2502 if (error) 2503 return error; 2504 2505 /* paranoia */ 2506 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2507 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2508 return EINVAL; 2509 } 2510 2511 /* 2512 * we have found our "VAT LVExtension attribute. BUT due to a 2513 * bug in the specification it might not be word aligned so 2514 * copy first to avoid panics on some machines (!!) 2515 */ 2516 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2517 lvextpos = implext->data + udf_rw32(implext->iu_l); 2518 memcpy(&lvext, lvextpos, sizeof(lvext)); 2519 2520 /* check if it was updated the last time */ 2521 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2522 lvinfo->num_files = lvext.num_files; 2523 lvinfo->num_directories = lvext.num_directories; 2524 udf_update_logvolname(ump, lvext.logvol_id); 2525 } else { 2526 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2527 /* replace VAT LVExt by free space EA */ 2528 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2529 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2530 udf_calc_impl_extattr_checksum(implext); 2531 } 2532 2533 return 0; 2534 } 2535 2536 2537 static int 2538 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2539 { 2540 struct udf_mount *ump; 2541 struct udf_logvol_info *lvinfo; 2542 struct impl_extattr_entry *implext; 2543 struct vatlvext_extattr_entry lvext; 2544 const char *extstr = "*UDF VAT LVExtension"; 2545 uint64_t vat_uniqueid; 2546 uint32_t offset, a_l; 2547 uint8_t *ea_start, *lvextpos; 2548 int error; 2549 2550 /* get mountpoint and lvinfo */ 2551 ump = vat_node->ump; 2552 lvinfo = ump->logvol_info; 2553 2554 /* get information from fe/efe */ 2555 if (vat_node->fe) { 2556 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2557 ea_start = vat_node->fe->data; 2558 } else { 2559 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2560 ea_start = vat_node->efe->data; 2561 } 2562 2563 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2564 if (error) 2565 return error; 2566 /* found, it existed */ 2567 2568 /* paranoia */ 2569 implext = (struct impl_extattr_entry *) (ea_start + offset); 2570 error = udf_impl_extattr_check(implext); 2571 if (error) { 2572 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2573 return error; 2574 } 2575 /* it is correct */ 2576 2577 /* 2578 * we have found our "VAT LVExtension attribute. BUT due to a 2579 * bug in the specification it might not be word aligned so 2580 * copy first to avoid panics on some machines (!!) 2581 */ 2582 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2583 lvextpos = implext->data + udf_rw32(implext->iu_l); 2584 2585 lvext.unique_id_chk = vat_uniqueid; 2586 lvext.num_files = lvinfo->num_files; 2587 lvext.num_directories = lvinfo->num_directories; 2588 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2589 2590 memcpy(lvextpos, &lvext, sizeof(lvext)); 2591 2592 return 0; 2593 } 2594 2595 /* --------------------------------------------------------------------- */ 2596 2597 int 2598 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2599 { 2600 struct udf_mount *ump = vat_node->ump; 2601 2602 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2603 return EINVAL; 2604 2605 memcpy(blob, ump->vat_table + offset, size); 2606 return 0; 2607 } 2608 2609 int 2610 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2611 { 2612 struct udf_mount *ump = vat_node->ump; 2613 uint32_t offset_high; 2614 uint8_t *new_vat_table; 2615 2616 /* extent VAT allocation if needed */ 2617 offset_high = offset + size; 2618 if (offset_high >= ump->vat_table_alloc_len) { 2619 /* realloc */ 2620 new_vat_table = realloc(ump->vat_table, 2621 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2622 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2623 if (!new_vat_table) { 2624 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2625 return ENOMEM; 2626 } 2627 ump->vat_table = new_vat_table; 2628 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2629 } 2630 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2631 2632 memcpy(ump->vat_table + offset, blob, size); 2633 return 0; 2634 } 2635 2636 /* --------------------------------------------------------------------- */ 2637 2638 /* TODO support previous VAT location writeout */ 2639 static int 2640 udf_update_vat_descriptor(struct udf_mount *ump) 2641 { 2642 struct udf_node *vat_node = ump->vat_node; 2643 struct udf_logvol_info *lvinfo = ump->logvol_info; 2644 struct icb_tag *icbtag; 2645 struct udf_oldvat_tail *oldvat_tl; 2646 struct udf_vat *vat; 2647 uint64_t unique_id; 2648 uint32_t lb_size; 2649 uint8_t *raw_vat; 2650 int filetype, error; 2651 2652 KASSERT(vat_node); 2653 KASSERT(lvinfo); 2654 lb_size = udf_rw32(ump->logical_vol->lb_size); 2655 2656 /* get our new unique_id */ 2657 unique_id = udf_advance_uniqueid(ump); 2658 2659 /* get information from fe/efe */ 2660 if (vat_node->fe) { 2661 icbtag = &vat_node->fe->icbtag; 2662 vat_node->fe->unique_id = udf_rw64(unique_id); 2663 } else { 2664 icbtag = &vat_node->efe->icbtag; 2665 vat_node->efe->unique_id = udf_rw64(unique_id); 2666 } 2667 2668 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2669 filetype = icbtag->file_type; 2670 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2671 2672 /* allocate piece to process head or tail of VAT file */ 2673 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2674 2675 if (filetype == 0) { 2676 /* 2677 * Update "*UDF VAT LVExtension" extended attribute from the 2678 * lvint if present. 2679 */ 2680 udf_update_vat_extattr_from_lvid(vat_node); 2681 2682 /* setup identifying regid */ 2683 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2684 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2685 2686 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2687 udf_add_udf_regid(ump, &oldvat_tl->id); 2688 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2689 2690 /* write out new tail of virtual allocation table file */ 2691 error = udf_vat_write(vat_node, raw_vat, 2692 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2693 } else { 2694 /* compose the VAT2 header */ 2695 vat = (struct udf_vat *) raw_vat; 2696 memset(vat, 0, sizeof(struct udf_vat)); 2697 2698 vat->header_len = udf_rw16(152); /* as per spec */ 2699 vat->impl_use_len = udf_rw16(0); 2700 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2701 vat->prev_vat = udf_rw32(0xffffffff); 2702 vat->num_files = lvinfo->num_files; 2703 vat->num_directories = lvinfo->num_directories; 2704 vat->min_udf_readver = lvinfo->min_udf_readver; 2705 vat->min_udf_writever = lvinfo->min_udf_writever; 2706 vat->max_udf_writever = lvinfo->max_udf_writever; 2707 2708 error = udf_vat_write(vat_node, raw_vat, 2709 sizeof(struct udf_vat), 0); 2710 } 2711 free(raw_vat, M_TEMP); 2712 2713 return error; /* success! */ 2714 } 2715 2716 2717 int 2718 udf_writeout_vat(struct udf_mount *ump) 2719 { 2720 struct udf_node *vat_node = ump->vat_node; 2721 uint32_t vat_length; 2722 int error; 2723 2724 KASSERT(vat_node); 2725 2726 DPRINTF(CALL, ("udf_writeout_vat\n")); 2727 2728 mutex_enter(&ump->allocate_mutex); 2729 udf_update_vat_descriptor(ump); 2730 2731 /* write out the VAT contents ; TODO intelligent writing */ 2732 vat_length = ump->vat_table_len; 2733 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2734 ump->vat_table, ump->vat_table_len, 0, 2735 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2736 if (error) { 2737 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2738 goto out; 2739 } 2740 2741 mutex_exit(&ump->allocate_mutex); 2742 2743 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2744 error = VOP_FSYNC(ump->vat_node->vnode, 2745 FSCRED, FSYNC_WAIT, 0, 0); 2746 if (error) 2747 printf("udf_writeout_vat: error writing VAT node!\n"); 2748 out: 2749 2750 return error; 2751 } 2752 2753 /* --------------------------------------------------------------------- */ 2754 2755 /* 2756 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2757 * descriptor. If OK, read in complete VAT file. 2758 */ 2759 2760 static int 2761 udf_check_for_vat(struct udf_node *vat_node) 2762 { 2763 struct udf_mount *ump; 2764 struct icb_tag *icbtag; 2765 struct timestamp *mtime; 2766 struct udf_vat *vat; 2767 struct udf_oldvat_tail *oldvat_tl; 2768 struct udf_logvol_info *lvinfo; 2769 uint64_t unique_id; 2770 uint32_t vat_length; 2771 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2772 uint32_t sector_size; 2773 uint32_t *raw_vat; 2774 uint8_t *vat_table; 2775 char *regid_name; 2776 int filetype; 2777 int error; 2778 2779 /* vat_length is really 64 bits though impossible */ 2780 2781 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2782 if (!vat_node) 2783 return ENOENT; 2784 2785 /* get mount info */ 2786 ump = vat_node->ump; 2787 sector_size = udf_rw32(ump->logical_vol->lb_size); 2788 2789 /* check assertions */ 2790 assert(vat_node->fe || vat_node->efe); 2791 assert(ump->logvol_integrity); 2792 2793 /* set vnode type to regular file or we can't read from it! */ 2794 vat_node->vnode->v_type = VREG; 2795 2796 /* get information from fe/efe */ 2797 if (vat_node->fe) { 2798 vat_length = udf_rw64(vat_node->fe->inf_len); 2799 icbtag = &vat_node->fe->icbtag; 2800 mtime = &vat_node->fe->mtime; 2801 unique_id = udf_rw64(vat_node->fe->unique_id); 2802 } else { 2803 vat_length = udf_rw64(vat_node->efe->inf_len); 2804 icbtag = &vat_node->efe->icbtag; 2805 mtime = &vat_node->efe->mtime; 2806 unique_id = udf_rw64(vat_node->efe->unique_id); 2807 } 2808 2809 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2810 filetype = icbtag->file_type; 2811 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2812 return ENOENT; 2813 2814 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2815 2816 vat_table_alloc_len = 2817 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2818 * UDF_VAT_CHUNKSIZE; 2819 2820 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2821 M_CANFAIL | M_WAITOK); 2822 if (vat_table == NULL) { 2823 printf("allocation of %d bytes failed for VAT\n", 2824 vat_table_alloc_len); 2825 return ENOMEM; 2826 } 2827 2828 /* allocate piece to read in head or tail of VAT file */ 2829 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2830 2831 /* 2832 * check contents of the file if its the old 1.50 VAT table format. 2833 * Its notoriously broken and allthough some implementations support an 2834 * extention as defined in the UDF 1.50 errata document, its doubtfull 2835 * to be useable since a lot of implementations don't maintain it. 2836 */ 2837 lvinfo = ump->logvol_info; 2838 2839 if (filetype == 0) { 2840 /* definition */ 2841 vat_offset = 0; 2842 vat_entries = (vat_length-36)/4; 2843 2844 /* read in tail of virtual allocation table file */ 2845 error = vn_rdwr(UIO_READ, vat_node->vnode, 2846 (uint8_t *) raw_vat, 2847 sizeof(struct udf_oldvat_tail), 2848 vat_entries * 4, 2849 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2850 NULL, NULL); 2851 if (error) 2852 goto out; 2853 2854 /* check 1.50 VAT */ 2855 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2856 regid_name = (char *) oldvat_tl->id.id; 2857 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2858 if (error) { 2859 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2860 error = ENOENT; 2861 goto out; 2862 } 2863 2864 /* 2865 * update LVID from "*UDF VAT LVExtension" extended attribute 2866 * if present. 2867 */ 2868 udf_update_lvid_from_vat_extattr(vat_node); 2869 } else { 2870 /* read in head of virtual allocation table file */ 2871 error = vn_rdwr(UIO_READ, vat_node->vnode, 2872 (uint8_t *) raw_vat, 2873 sizeof(struct udf_vat), 0, 2874 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2875 NULL, NULL); 2876 if (error) 2877 goto out; 2878 2879 /* definition */ 2880 vat = (struct udf_vat *) raw_vat; 2881 vat_offset = vat->header_len; 2882 vat_entries = (vat_length - vat_offset)/4; 2883 2884 assert(lvinfo); 2885 lvinfo->num_files = vat->num_files; 2886 lvinfo->num_directories = vat->num_directories; 2887 lvinfo->min_udf_readver = vat->min_udf_readver; 2888 lvinfo->min_udf_writever = vat->min_udf_writever; 2889 lvinfo->max_udf_writever = vat->max_udf_writever; 2890 2891 udf_update_logvolname(ump, vat->logvol_id); 2892 } 2893 2894 /* read in complete VAT file */ 2895 error = vn_rdwr(UIO_READ, vat_node->vnode, 2896 vat_table, 2897 vat_length, 0, 2898 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2899 NULL, NULL); 2900 if (error) 2901 printf("read in of complete VAT file failed (error %d)\n", 2902 error); 2903 if (error) 2904 goto out; 2905 2906 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2907 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2908 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2909 ump->logvol_integrity->time = *mtime; 2910 2911 ump->vat_table_len = vat_length; 2912 ump->vat_table_alloc_len = vat_table_alloc_len; 2913 ump->vat_table = vat_table; 2914 ump->vat_offset = vat_offset; 2915 ump->vat_entries = vat_entries; 2916 ump->vat_last_free_lb = 0; /* start at beginning */ 2917 2918 out: 2919 if (error) { 2920 if (vat_table) 2921 free(vat_table, M_UDFVOLD); 2922 } 2923 free(raw_vat, M_TEMP); 2924 2925 return error; 2926 } 2927 2928 /* --------------------------------------------------------------------- */ 2929 2930 static int 2931 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2932 { 2933 struct udf_node *vat_node; 2934 struct long_ad icb_loc; 2935 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2936 int error; 2937 2938 /* mapping info not needed */ 2939 mapping = mapping; 2940 2941 vat_loc = ump->last_possible_vat_location; 2942 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2943 2944 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2945 vat_loc, early_vat_loc)); 2946 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2947 late_vat_loc = vat_loc + 1024; 2948 2949 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2950 vat_loc, early_vat_loc)); 2951 2952 /* start looking from the end of the range */ 2953 do { 2954 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2955 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2956 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2957 2958 error = udf_get_node(ump, &icb_loc, &vat_node); 2959 if (!error) { 2960 error = udf_check_for_vat(vat_node); 2961 DPRINTFIF(VOLUMES, !error, 2962 ("VAT accepted at %d\n", vat_loc)); 2963 if (!error) 2964 break; 2965 } 2966 if (vat_node) { 2967 vput(vat_node->vnode); 2968 vat_node = NULL; 2969 } 2970 vat_loc--; /* walk backwards */ 2971 } while (vat_loc >= early_vat_loc); 2972 2973 /* keep our VAT node around */ 2974 if (vat_node) { 2975 UDF_SET_SYSTEMFILE(vat_node->vnode); 2976 ump->vat_node = vat_node; 2977 } 2978 2979 return error; 2980 } 2981 2982 /* --------------------------------------------------------------------- */ 2983 2984 static int 2985 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2986 { 2987 union dscrptr *dscr; 2988 struct part_map_spare *pms = &mapping->pms; 2989 uint32_t lb_num; 2990 int spar, error; 2991 2992 /* 2993 * The partition mapping passed on to us specifies the information we 2994 * need to locate and initialise the sparable partition mapping 2995 * information we need. 2996 */ 2997 2998 DPRINTF(VOLUMES, ("Read sparable table\n")); 2999 ump->sparable_packet_size = udf_rw16(pms->packet_len); 3000 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3001 3002 for (spar = 0; spar < pms->n_st; spar++) { 3003 lb_num = pms->st_loc[spar]; 3004 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3005 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3006 if (!error && dscr) { 3007 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3008 if (ump->sparing_table) 3009 free(ump->sparing_table, M_UDFVOLD); 3010 ump->sparing_table = &dscr->spt; 3011 dscr = NULL; 3012 DPRINTF(VOLUMES, 3013 ("Sparing table accepted (%d entries)\n", 3014 udf_rw16(ump->sparing_table->rt_l))); 3015 break; /* we're done */ 3016 } 3017 } 3018 if (dscr) 3019 free(dscr, M_UDFVOLD); 3020 } 3021 3022 if (ump->sparing_table) 3023 return 0; 3024 3025 return ENOENT; 3026 } 3027 3028 /* --------------------------------------------------------------------- */ 3029 3030 static int 3031 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3032 { 3033 struct part_map_meta *pmm = &mapping->pmm; 3034 struct long_ad icb_loc; 3035 struct vnode *vp; 3036 int error; 3037 3038 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3039 icb_loc.loc.part_num = pmm->part_num; 3040 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3041 DPRINTF(VOLUMES, ("Metadata file\n")); 3042 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3043 if (ump->metadata_node) { 3044 vp = ump->metadata_node->vnode; 3045 UDF_SET_SYSTEMFILE(vp); 3046 } 3047 3048 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3049 if (icb_loc.loc.lb_num != -1) { 3050 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3051 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3052 if (ump->metadatamirror_node) { 3053 vp = ump->metadatamirror_node->vnode; 3054 UDF_SET_SYSTEMFILE(vp); 3055 } 3056 } 3057 3058 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3059 if (icb_loc.loc.lb_num != -1) { 3060 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3061 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3062 if (ump->metadatabitmap_node) { 3063 vp = ump->metadatabitmap_node->vnode; 3064 UDF_SET_SYSTEMFILE(vp); 3065 } 3066 } 3067 3068 /* if we're mounting read-only we relax the requirements */ 3069 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3070 error = EFAULT; 3071 if (ump->metadata_node) 3072 error = 0; 3073 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3074 printf( "udf mount: Metadata file not readable, " 3075 "substituting Metadata copy file\n"); 3076 ump->metadata_node = ump->metadatamirror_node; 3077 ump->metadatamirror_node = NULL; 3078 error = 0; 3079 } 3080 } else { 3081 /* mounting read/write */ 3082 /* XXX DISABLED! metadata writing is not working yet XXX */ 3083 if (error) 3084 error = EROFS; 3085 } 3086 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3087 "metadata files\n")); 3088 return error; 3089 } 3090 3091 /* --------------------------------------------------------------------- */ 3092 3093 int 3094 udf_read_vds_tables(struct udf_mount *ump) 3095 { 3096 union udf_pmap *mapping; 3097 /* struct udf_args *args = &ump->mount_args; */ 3098 uint32_t n_pm, mt_l; 3099 uint32_t log_part; 3100 uint8_t *pmap_pos; 3101 int pmap_size; 3102 int error; 3103 3104 /* Iterate (again) over the part mappings for locations */ 3105 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3106 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 3107 pmap_pos = ump->logical_vol->maps; 3108 3109 for (log_part = 0; log_part < n_pm; log_part++) { 3110 mapping = (union udf_pmap *) pmap_pos; 3111 switch (ump->vtop_tp[log_part]) { 3112 case UDF_VTOP_TYPE_PHYS : 3113 /* nothing */ 3114 break; 3115 case UDF_VTOP_TYPE_VIRT : 3116 /* search and load VAT */ 3117 error = udf_search_vat(ump, mapping); 3118 if (error) 3119 return ENOENT; 3120 break; 3121 case UDF_VTOP_TYPE_SPARABLE : 3122 /* load one of the sparable tables */ 3123 error = udf_read_sparables(ump, mapping); 3124 if (error) 3125 return ENOENT; 3126 break; 3127 case UDF_VTOP_TYPE_META : 3128 /* load the associated file descriptors */ 3129 error = udf_read_metadata_nodes(ump, mapping); 3130 if (error) 3131 return ENOENT; 3132 break; 3133 default: 3134 break; 3135 } 3136 pmap_size = pmap_pos[1]; 3137 pmap_pos += pmap_size; 3138 } 3139 3140 /* read in and check unallocated and free space info if writing */ 3141 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3142 error = udf_read_physical_partition_spacetables(ump); 3143 if (error) 3144 return error; 3145 3146 /* also read in metadata partion spacebitmap if defined */ 3147 error = udf_read_metadata_partition_spacetable(ump); 3148 return error; 3149 } 3150 3151 return 0; 3152 } 3153 3154 /* --------------------------------------------------------------------- */ 3155 3156 int 3157 udf_read_rootdirs(struct udf_mount *ump) 3158 { 3159 union dscrptr *dscr; 3160 /* struct udf_args *args = &ump->mount_args; */ 3161 struct udf_node *rootdir_node, *streamdir_node; 3162 struct long_ad fsd_loc, *dir_loc; 3163 uint32_t lb_num, dummy; 3164 uint32_t fsd_len; 3165 int dscr_type; 3166 int error; 3167 3168 /* TODO implement FSD reading in separate function like integrity? */ 3169 /* get fileset descriptor sequence */ 3170 fsd_loc = ump->logical_vol->lv_fsd_loc; 3171 fsd_len = udf_rw32(fsd_loc.len); 3172 3173 dscr = NULL; 3174 error = 0; 3175 while (fsd_len || error) { 3176 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3177 /* translate fsd_loc to lb_num */ 3178 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3179 if (error) 3180 break; 3181 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3182 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3183 /* end markers */ 3184 if (error || (dscr == NULL)) 3185 break; 3186 3187 /* analyse */ 3188 dscr_type = udf_rw16(dscr->tag.id); 3189 if (dscr_type == TAGID_TERM) 3190 break; 3191 if (dscr_type != TAGID_FSD) { 3192 free(dscr, M_UDFVOLD); 3193 return ENOENT; 3194 } 3195 3196 /* 3197 * TODO check for multiple fileset descriptors; its only 3198 * picking the last now. Also check for FSD 3199 * correctness/interpretability 3200 */ 3201 3202 /* update */ 3203 if (ump->fileset_desc) { 3204 free(ump->fileset_desc, M_UDFVOLD); 3205 } 3206 ump->fileset_desc = &dscr->fsd; 3207 dscr = NULL; 3208 3209 /* continue to the next fsd */ 3210 fsd_len -= ump->discinfo.sector_size; 3211 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3212 3213 /* follow up to fsd->next_ex (long_ad) if its not null */ 3214 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3215 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3216 fsd_loc = ump->fileset_desc->next_ex; 3217 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3218 } 3219 } 3220 if (dscr) 3221 free(dscr, M_UDFVOLD); 3222 3223 /* there has to be one */ 3224 if (ump->fileset_desc == NULL) 3225 return ENOENT; 3226 3227 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3228 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3229 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3230 3231 /* 3232 * Now the FSD is known, read in the rootdirectory and if one exists, 3233 * the system stream dir. Some files in the system streamdir are not 3234 * wanted in this implementation since they are not maintained. If 3235 * writing is enabled we'll delete these files if they exist. 3236 */ 3237 3238 rootdir_node = streamdir_node = NULL; 3239 dir_loc = NULL; 3240 3241 /* try to read in the rootdir */ 3242 dir_loc = &ump->fileset_desc->rootdir_icb; 3243 error = udf_get_node(ump, dir_loc, &rootdir_node); 3244 if (error) 3245 return ENOENT; 3246 3247 /* aparently it read in fine */ 3248 3249 /* 3250 * Try the system stream directory; not very likely in the ones we 3251 * test, but for completeness. 3252 */ 3253 dir_loc = &ump->fileset_desc->streamdir_icb; 3254 if (udf_rw32(dir_loc->len)) { 3255 printf("udf_read_rootdirs: streamdir defined "); 3256 error = udf_get_node(ump, dir_loc, &streamdir_node); 3257 if (error) { 3258 printf("but error in streamdir reading\n"); 3259 } else { 3260 printf("but ignored\n"); 3261 /* 3262 * TODO process streamdir `baddies' i.e. files we dont 3263 * want if R/W 3264 */ 3265 } 3266 } 3267 3268 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3269 3270 /* release the vnodes again; they'll be auto-recycled later */ 3271 if (streamdir_node) { 3272 vput(streamdir_node->vnode); 3273 } 3274 if (rootdir_node) { 3275 vput(rootdir_node->vnode); 3276 } 3277 3278 return 0; 3279 } 3280 3281 /* --------------------------------------------------------------------- */ 3282 3283 /* To make absolutely sure we are NOT returning zero, add one :) */ 3284 3285 long 3286 udf_calchash(struct long_ad *icbptr) 3287 { 3288 /* ought to be enough since each mountpoint has its own chain */ 3289 return udf_rw32(icbptr->loc.lb_num) + 1; 3290 } 3291 3292 3293 static struct udf_node * 3294 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3295 { 3296 struct udf_node *node; 3297 struct vnode *vp; 3298 uint32_t hashline; 3299 3300 loop: 3301 mutex_enter(&ump->ihash_lock); 3302 3303 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3304 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3305 assert(node); 3306 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3307 node->loc.loc.part_num == icbptr->loc.part_num) { 3308 vp = node->vnode; 3309 assert(vp); 3310 mutex_enter(&vp->v_interlock); 3311 mutex_exit(&ump->ihash_lock); 3312 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3313 goto loop; 3314 return node; 3315 } 3316 } 3317 mutex_exit(&ump->ihash_lock); 3318 3319 return NULL; 3320 } 3321 3322 3323 static void 3324 udf_sorted_list_insert(struct udf_node *node) 3325 { 3326 struct udf_mount *ump; 3327 struct udf_node *s_node, *last_node; 3328 uint32_t loc, s_loc; 3329 3330 ump = node->ump; 3331 last_node = NULL; /* XXX gcc */ 3332 3333 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3334 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3335 return; 3336 } 3337 3338 /* 3339 * We sort on logical block number here and not on physical block 3340 * number here. Ideally we should go for the physical block nr to get 3341 * better sync performance though this sort will ensure that packets 3342 * won't get spit up unnessisarily. 3343 */ 3344 3345 loc = udf_rw32(node->loc.loc.lb_num); 3346 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3347 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3348 if (s_loc > loc) { 3349 LIST_INSERT_BEFORE(s_node, node, sortchain); 3350 return; 3351 } 3352 last_node = s_node; 3353 } 3354 LIST_INSERT_AFTER(last_node, node, sortchain); 3355 } 3356 3357 3358 static void 3359 udf_register_node(struct udf_node *node) 3360 { 3361 struct udf_mount *ump; 3362 struct udf_node *chk; 3363 uint32_t hashline; 3364 3365 ump = node->ump; 3366 mutex_enter(&ump->ihash_lock); 3367 3368 /* add to our hash table */ 3369 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3370 #ifdef DEBUG 3371 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3372 assert(chk); 3373 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3374 chk->loc.loc.part_num == node->loc.loc.part_num) 3375 panic("Double node entered\n"); 3376 } 3377 #else 3378 chk = NULL; 3379 #endif 3380 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3381 3382 /* add to our sorted list */ 3383 udf_sorted_list_insert(node); 3384 3385 mutex_exit(&ump->ihash_lock); 3386 } 3387 3388 3389 static void 3390 udf_deregister_node(struct udf_node *node) 3391 { 3392 struct udf_mount *ump; 3393 3394 ump = node->ump; 3395 mutex_enter(&ump->ihash_lock); 3396 3397 /* from hash and sorted list */ 3398 LIST_REMOVE(node, hashchain); 3399 LIST_REMOVE(node, sortchain); 3400 3401 mutex_exit(&ump->ihash_lock); 3402 } 3403 3404 /* --------------------------------------------------------------------- */ 3405 3406 int 3407 udf_open_logvol(struct udf_mount *ump) 3408 { 3409 int logvol_integrity; 3410 int error; 3411 3412 /* already/still open? */ 3413 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3414 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3415 return 0; 3416 3417 /* can we open it ? */ 3418 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3419 return EROFS; 3420 3421 /* setup write parameters */ 3422 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3423 if ((error = udf_setup_writeparams(ump)) != 0) 3424 return error; 3425 3426 /* determine data and metadata tracks (most likely same) */ 3427 error = udf_search_writing_tracks(ump); 3428 if (error) { 3429 /* most likely lack of space */ 3430 printf("udf_open_logvol: error searching writing tracks\n"); 3431 return EROFS; 3432 } 3433 3434 /* writeout/update lvint on disc or only in memory */ 3435 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3436 if (ump->lvopen & UDF_OPEN_SESSION) { 3437 /* TODO implement writeout of VRS + VDS */ 3438 printf( "udf_open_logvol:Opening a closed session not yet " 3439 "implemented\n"); 3440 return EROFS; 3441 3442 /* determine data and metadata tracks again */ 3443 error = udf_search_writing_tracks(ump); 3444 } 3445 3446 /* mark it open */ 3447 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3448 3449 /* do we need to write it out? */ 3450 if (ump->lvopen & UDF_WRITE_LVINT) { 3451 error = udf_writeout_lvint(ump, ump->lvopen); 3452 /* if we couldn't write it mark it closed again */ 3453 if (error) { 3454 ump->logvol_integrity->integrity_type = 3455 udf_rw32(UDF_INTEGRITY_CLOSED); 3456 return error; 3457 } 3458 } 3459 3460 return 0; 3461 } 3462 3463 3464 int 3465 udf_close_logvol(struct udf_mount *ump, int mntflags) 3466 { 3467 int logvol_integrity; 3468 int error = 0, error1 = 0, error2 = 0; 3469 int n; 3470 3471 /* already/still closed? */ 3472 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3473 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3474 return 0; 3475 3476 /* writeout/update lvint or write out VAT */ 3477 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3478 if (ump->lvclose & UDF_WRITE_VAT) { 3479 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3480 3481 /* write out the VAT node */ 3482 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3483 udf_writeout_vat(ump); 3484 3485 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3486 for (n = 0; n < 16; n++) { 3487 ump->vat_node->i_flags |= IN_MODIFIED; 3488 error = VOP_FSYNC(ump->vat_node->vnode, 3489 FSCRED, FSYNC_WAIT, 0, 0); 3490 } 3491 if (error) { 3492 printf("udf_close_logvol: writeout of VAT failed\n"); 3493 return error; 3494 } 3495 } 3496 3497 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3498 /* sync writeout metadata spacetable if existing */ 3499 error1 = udf_write_metadata_partition_spacetable(ump, true); 3500 if (error1) 3501 printf( "udf_close_logvol: writeout of metadata space " 3502 "bitmap failed\n"); 3503 3504 /* sync writeout partition spacetables */ 3505 error2 = udf_write_physical_partition_spacetables(ump, true); 3506 if (error2) 3507 printf( "udf_close_logvol: writeout of space tables " 3508 "failed\n"); 3509 3510 if (error1 || error2) 3511 return (error1 | error2); 3512 3513 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3514 } 3515 3516 if (ump->lvclose & UDF_CLOSE_SESSION) { 3517 printf("TODO: Closing a session is not yet implemented\n"); 3518 return EROFS; 3519 ump->lvopen |= UDF_OPEN_SESSION; 3520 } 3521 3522 /* mark it closed */ 3523 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3524 3525 /* do we need to write out the logical volume integrity */ 3526 if (ump->lvclose & UDF_WRITE_LVINT) 3527 error = udf_writeout_lvint(ump, ump->lvopen); 3528 if (error) { 3529 /* HELP now what? mark it open again for now */ 3530 ump->logvol_integrity->integrity_type = 3531 udf_rw32(UDF_INTEGRITY_OPEN); 3532 return error; 3533 } 3534 3535 (void) udf_synchronise_caches(ump); 3536 3537 return 0; 3538 } 3539 3540 /* --------------------------------------------------------------------- */ 3541 3542 /* 3543 * Genfs interfacing 3544 * 3545 * static const struct genfs_ops udf_genfsops = { 3546 * .gop_size = genfs_size, 3547 * size of transfers 3548 * .gop_alloc = udf_gop_alloc, 3549 * allocate len bytes at offset 3550 * .gop_write = genfs_gop_write, 3551 * putpages interface code 3552 * .gop_markupdate = udf_gop_markupdate, 3553 * set update/modify flags etc. 3554 * } 3555 */ 3556 3557 /* 3558 * Genfs interface. These four functions are the only ones defined though not 3559 * documented... great.... 3560 */ 3561 3562 /* 3563 * Callback from genfs to allocate len bytes at offset off; only called when 3564 * filling up gaps in the allocation. 3565 */ 3566 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3567 static int 3568 udf_gop_alloc(struct vnode *vp, off_t off, 3569 off_t len, int flags, kauth_cred_t cred) 3570 { 3571 #if 0 3572 struct udf_node *udf_node = VTOI(vp); 3573 struct udf_mount *ump = udf_node->ump; 3574 uint32_t lb_size, num_lb; 3575 #endif 3576 3577 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3578 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3579 3580 return 0; 3581 } 3582 3583 3584 /* 3585 * callback from genfs to update our flags 3586 */ 3587 static void 3588 udf_gop_markupdate(struct vnode *vp, int flags) 3589 { 3590 struct udf_node *udf_node = VTOI(vp); 3591 u_long mask = 0; 3592 3593 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3594 mask = IN_ACCESS; 3595 } 3596 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3597 if (vp->v_type == VREG) { 3598 mask |= IN_CHANGE | IN_UPDATE; 3599 } else { 3600 mask |= IN_MODIFY; 3601 } 3602 } 3603 if (mask) { 3604 udf_node->i_flags |= mask; 3605 } 3606 } 3607 3608 3609 static const struct genfs_ops udf_genfsops = { 3610 .gop_size = genfs_size, 3611 .gop_alloc = udf_gop_alloc, 3612 .gop_write = genfs_gop_write_rwmap, 3613 .gop_markupdate = udf_gop_markupdate, 3614 }; 3615 3616 3617 /* --------------------------------------------------------------------- */ 3618 3619 int 3620 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3621 { 3622 union dscrptr *dscr; 3623 int error; 3624 3625 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3626 bzero(dscr, ump->discinfo.sector_size); 3627 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3628 3629 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3630 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3631 (void) udf_validate_tag_and_crc_sums(dscr); 3632 3633 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3634 dscr, sector, sector); 3635 3636 free(dscr, M_TEMP); 3637 3638 return error; 3639 } 3640 3641 3642 /* --------------------------------------------------------------------- */ 3643 3644 /* UDF<->unix converters */ 3645 3646 /* --------------------------------------------------------------------- */ 3647 3648 static mode_t 3649 udf_perm_to_unix_mode(uint32_t perm) 3650 { 3651 mode_t mode; 3652 3653 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3654 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3655 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3656 3657 return mode; 3658 } 3659 3660 /* --------------------------------------------------------------------- */ 3661 3662 static uint32_t 3663 unix_mode_to_udf_perm(mode_t mode) 3664 { 3665 uint32_t perm; 3666 3667 perm = ((mode & S_IRWXO) ); 3668 perm |= ((mode & S_IRWXG) << 2); 3669 perm |= ((mode & S_IRWXU) << 4); 3670 perm |= ((mode & S_IWOTH) << 3); 3671 perm |= ((mode & S_IWGRP) << 5); 3672 perm |= ((mode & S_IWUSR) << 7); 3673 3674 return perm; 3675 } 3676 3677 /* --------------------------------------------------------------------- */ 3678 3679 static uint32_t 3680 udf_icb_to_unix_filetype(uint32_t icbftype) 3681 { 3682 switch (icbftype) { 3683 case UDF_ICB_FILETYPE_DIRECTORY : 3684 case UDF_ICB_FILETYPE_STREAMDIR : 3685 return S_IFDIR; 3686 case UDF_ICB_FILETYPE_FIFO : 3687 return S_IFIFO; 3688 case UDF_ICB_FILETYPE_CHARDEVICE : 3689 return S_IFCHR; 3690 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3691 return S_IFBLK; 3692 case UDF_ICB_FILETYPE_RANDOMACCESS : 3693 case UDF_ICB_FILETYPE_REALTIME : 3694 return S_IFREG; 3695 case UDF_ICB_FILETYPE_SYMLINK : 3696 return S_IFLNK; 3697 case UDF_ICB_FILETYPE_SOCKET : 3698 return S_IFSOCK; 3699 } 3700 /* no idea what this is */ 3701 return 0; 3702 } 3703 3704 /* --------------------------------------------------------------------- */ 3705 3706 void 3707 udf_to_unix_name(char *result, int result_len, char *id, int len, 3708 struct charspec *chsp) 3709 { 3710 uint16_t *raw_name, *unix_name; 3711 uint16_t *inchp, ch; 3712 uint8_t *outchp; 3713 const char *osta_id = "OSTA Compressed Unicode"; 3714 int ucode_chars, nice_uchars, is_osta_typ0, nout; 3715 3716 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3717 unix_name = raw_name + 1024; /* split space in half */ 3718 assert(sizeof(char) == sizeof(uint8_t)); 3719 outchp = (uint8_t *) result; 3720 3721 is_osta_typ0 = (chsp->type == 0); 3722 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3723 if (is_osta_typ0) { 3724 /* TODO clean up */ 3725 *raw_name = *unix_name = 0; 3726 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3727 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3728 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3729 /* output UTF8 */ 3730 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3731 ch = *inchp; 3732 nout = wput_utf8(outchp, result_len, ch); 3733 outchp += nout; result_len -= nout; 3734 if (!ch) break; 3735 } 3736 *outchp++ = 0; 3737 } else { 3738 /* assume 8bit char length byte latin-1 */ 3739 assert(*id == 8); 3740 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 3741 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3742 } 3743 free(raw_name, M_UDFTEMP); 3744 } 3745 3746 /* --------------------------------------------------------------------- */ 3747 3748 void 3749 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3750 struct charspec *chsp) 3751 { 3752 uint16_t *raw_name; 3753 uint16_t *outchp; 3754 const char *inchp; 3755 const char *osta_id = "OSTA Compressed Unicode"; 3756 int udf_chars, is_osta_typ0, bits; 3757 size_t cnt; 3758 3759 /* allocate temporary unicode-16 buffer */ 3760 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3761 3762 /* convert utf8 to unicode-16 */ 3763 *raw_name = 0; 3764 inchp = name; 3765 outchp = raw_name; 3766 bits = 8; 3767 for (cnt = name_len, udf_chars = 0; cnt;) { 3768 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 3769 *outchp = wget_utf8(&inchp, &cnt); 3770 if (*outchp > 0xff) 3771 bits=16; 3772 outchp++; 3773 udf_chars++; 3774 } 3775 /* null terminate just in case */ 3776 *outchp++ = 0; 3777 3778 is_osta_typ0 = (chsp->type == 0); 3779 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3780 if (is_osta_typ0) { 3781 udf_chars = udf_CompressUnicode(udf_chars, bits, 3782 (unicode_t *) raw_name, 3783 (byte *) result); 3784 } else { 3785 printf("unix to udf name: no CHSP0 ?\n"); 3786 /* XXX assume 8bit char length byte latin-1 */ 3787 *result++ = 8; udf_chars = 1; 3788 strncpy(result, name + 1, name_len); 3789 udf_chars += name_len; 3790 } 3791 *result_len = udf_chars; 3792 free(raw_name, M_UDFTEMP); 3793 } 3794 3795 /* --------------------------------------------------------------------- */ 3796 3797 void 3798 udf_timestamp_to_timespec(struct udf_mount *ump, 3799 struct timestamp *timestamp, 3800 struct timespec *timespec) 3801 { 3802 struct clock_ymdhms ymdhms; 3803 uint32_t usecs, secs, nsecs; 3804 uint16_t tz; 3805 3806 /* fill in ymdhms structure from timestamp */ 3807 memset(&ymdhms, 0, sizeof(ymdhms)); 3808 ymdhms.dt_year = udf_rw16(timestamp->year); 3809 ymdhms.dt_mon = timestamp->month; 3810 ymdhms.dt_day = timestamp->day; 3811 ymdhms.dt_wday = 0; /* ? */ 3812 ymdhms.dt_hour = timestamp->hour; 3813 ymdhms.dt_min = timestamp->minute; 3814 ymdhms.dt_sec = timestamp->second; 3815 3816 secs = clock_ymdhms_to_secs(&ymdhms); 3817 usecs = timestamp->usec + 3818 100*timestamp->hund_usec + 10000*timestamp->centisec; 3819 nsecs = usecs * 1000; 3820 3821 /* 3822 * Calculate the time zone. The timezone is 12 bit signed 2's 3823 * compliment, so we gotta do some extra magic to handle it right. 3824 */ 3825 tz = udf_rw16(timestamp->type_tz); 3826 tz &= 0x0fff; /* only lower 12 bits are significant */ 3827 if (tz & 0x0800) /* sign extention */ 3828 tz |= 0xf000; 3829 3830 /* TODO check timezone conversion */ 3831 /* check if we are specified a timezone to convert */ 3832 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3833 if ((int16_t) tz != -2047) 3834 secs -= (int16_t) tz * 60; 3835 } else { 3836 secs -= ump->mount_args.gmtoff; 3837 } 3838 3839 timespec->tv_sec = secs; 3840 timespec->tv_nsec = nsecs; 3841 } 3842 3843 3844 void 3845 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3846 { 3847 struct clock_ymdhms ymdhms; 3848 uint32_t husec, usec, csec; 3849 3850 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3851 3852 usec = timespec->tv_nsec / 1000; 3853 husec = usec / 100; 3854 usec -= husec * 100; /* only 0-99 in usec */ 3855 csec = husec / 100; /* only 0-99 in csec */ 3856 husec -= csec * 100; /* only 0-99 in husec */ 3857 3858 /* set method 1 for CUT/GMT */ 3859 timestamp->type_tz = udf_rw16((1<<12) + 0); 3860 timestamp->year = udf_rw16(ymdhms.dt_year); 3861 timestamp->month = ymdhms.dt_mon; 3862 timestamp->day = ymdhms.dt_day; 3863 timestamp->hour = ymdhms.dt_hour; 3864 timestamp->minute = ymdhms.dt_min; 3865 timestamp->second = ymdhms.dt_sec; 3866 timestamp->centisec = csec; 3867 timestamp->hund_usec = husec; 3868 timestamp->usec = usec; 3869 } 3870 3871 /* --------------------------------------------------------------------- */ 3872 3873 /* 3874 * Attribute and filetypes converters with get/set pairs 3875 */ 3876 3877 uint32_t 3878 udf_getaccessmode(struct udf_node *udf_node) 3879 { 3880 struct file_entry *fe = udf_node->fe;; 3881 struct extfile_entry *efe = udf_node->efe; 3882 uint32_t udf_perm, icbftype; 3883 uint32_t mode, ftype; 3884 uint16_t icbflags; 3885 3886 UDF_LOCK_NODE(udf_node, 0); 3887 if (fe) { 3888 udf_perm = udf_rw32(fe->perm); 3889 icbftype = fe->icbtag.file_type; 3890 icbflags = udf_rw16(fe->icbtag.flags); 3891 } else { 3892 assert(udf_node->efe); 3893 udf_perm = udf_rw32(efe->perm); 3894 icbftype = efe->icbtag.file_type; 3895 icbflags = udf_rw16(efe->icbtag.flags); 3896 } 3897 3898 mode = udf_perm_to_unix_mode(udf_perm); 3899 ftype = udf_icb_to_unix_filetype(icbftype); 3900 3901 /* set suid, sgid, sticky from flags in fe/efe */ 3902 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3903 mode |= S_ISUID; 3904 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3905 mode |= S_ISGID; 3906 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3907 mode |= S_ISVTX; 3908 3909 UDF_UNLOCK_NODE(udf_node, 0); 3910 3911 return mode | ftype; 3912 } 3913 3914 3915 void 3916 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3917 { 3918 struct file_entry *fe = udf_node->fe; 3919 struct extfile_entry *efe = udf_node->efe; 3920 uint32_t udf_perm; 3921 uint16_t icbflags; 3922 3923 UDF_LOCK_NODE(udf_node, 0); 3924 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3925 if (fe) { 3926 icbflags = udf_rw16(fe->icbtag.flags); 3927 } else { 3928 icbflags = udf_rw16(efe->icbtag.flags); 3929 } 3930 3931 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3932 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3933 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3934 if (mode & S_ISUID) 3935 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3936 if (mode & S_ISGID) 3937 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3938 if (mode & S_ISVTX) 3939 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3940 3941 if (fe) { 3942 fe->perm = udf_rw32(udf_perm); 3943 fe->icbtag.flags = udf_rw16(icbflags); 3944 } else { 3945 efe->perm = udf_rw32(udf_perm); 3946 efe->icbtag.flags = udf_rw16(icbflags); 3947 } 3948 3949 UDF_UNLOCK_NODE(udf_node, 0); 3950 } 3951 3952 3953 void 3954 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3955 { 3956 struct udf_mount *ump = udf_node->ump; 3957 struct file_entry *fe = udf_node->fe; 3958 struct extfile_entry *efe = udf_node->efe; 3959 uid_t uid; 3960 gid_t gid; 3961 3962 UDF_LOCK_NODE(udf_node, 0); 3963 if (fe) { 3964 uid = (uid_t)udf_rw32(fe->uid); 3965 gid = (gid_t)udf_rw32(fe->gid); 3966 } else { 3967 assert(udf_node->efe); 3968 uid = (uid_t)udf_rw32(efe->uid); 3969 gid = (gid_t)udf_rw32(efe->gid); 3970 } 3971 3972 /* do the uid/gid translation game */ 3973 if (uid == (uid_t) -1) 3974 uid = ump->mount_args.anon_uid; 3975 if (gid == (gid_t) -1) 3976 gid = ump->mount_args.anon_gid; 3977 3978 *uidp = uid; 3979 *gidp = gid; 3980 3981 UDF_UNLOCK_NODE(udf_node, 0); 3982 } 3983 3984 3985 void 3986 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 3987 { 3988 struct udf_mount *ump = udf_node->ump; 3989 struct file_entry *fe = udf_node->fe; 3990 struct extfile_entry *efe = udf_node->efe; 3991 uid_t nobody_uid; 3992 gid_t nobody_gid; 3993 3994 UDF_LOCK_NODE(udf_node, 0); 3995 3996 /* do the uid/gid translation game */ 3997 nobody_uid = ump->mount_args.nobody_uid; 3998 nobody_gid = ump->mount_args.nobody_gid; 3999 if (uid == nobody_uid) 4000 uid = (uid_t) -1; 4001 if (gid == nobody_gid) 4002 gid = (gid_t) -1; 4003 4004 if (fe) { 4005 fe->uid = udf_rw32((uint32_t) uid); 4006 fe->gid = udf_rw32((uint32_t) gid); 4007 } else { 4008 efe->uid = udf_rw32((uint32_t) uid); 4009 efe->gid = udf_rw32((uint32_t) gid); 4010 } 4011 4012 UDF_UNLOCK_NODE(udf_node, 0); 4013 } 4014 4015 4016 /* --------------------------------------------------------------------- */ 4017 4018 4019 static int 4020 dirhash_fill(struct udf_node *dir_node) 4021 { 4022 struct vnode *dvp = dir_node->vnode; 4023 struct dirhash *dirh; 4024 struct file_entry *fe = dir_node->fe; 4025 struct extfile_entry *efe = dir_node->efe; 4026 struct fileid_desc *fid; 4027 struct dirent *dirent; 4028 uint64_t file_size, pre_diroffset, diroffset; 4029 uint32_t lb_size; 4030 int error; 4031 4032 /* make sure we have a dirhash to work on */ 4033 dirh = dir_node->dir_hash; 4034 KASSERT(dirh); 4035 KASSERT(dirh->refcnt > 0); 4036 4037 if (dirh->flags & DIRH_BROKEN) 4038 return EIO; 4039 if (dirh->flags & DIRH_COMPLETE) 4040 return 0; 4041 4042 /* make sure we have a clean dirhash to add to */ 4043 dirhash_purge_entries(dirh); 4044 4045 /* get directory filesize */ 4046 if (fe) { 4047 file_size = udf_rw64(fe->inf_len); 4048 } else { 4049 assert(efe); 4050 file_size = udf_rw64(efe->inf_len); 4051 } 4052 4053 /* allocate temporary space for fid */ 4054 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4055 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4056 4057 /* allocate temporary space for dirent */ 4058 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4059 4060 error = 0; 4061 diroffset = 0; 4062 while (diroffset < file_size) { 4063 /* transfer a new fid/dirent */ 4064 pre_diroffset = diroffset; 4065 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4066 if (error) { 4067 /* TODO what to do? continue but not add? */ 4068 dirh->flags |= DIRH_BROKEN; 4069 dirhash_purge_entries(dirh); 4070 break; 4071 } 4072 4073 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4074 /* register deleted extent for reuse */ 4075 dirhash_enter_freed(dirh, pre_diroffset, 4076 udf_fidsize(fid)); 4077 } else { 4078 /* append to the dirhash */ 4079 dirhash_enter(dirh, dirent, pre_diroffset, 4080 udf_fidsize(fid), 0); 4081 } 4082 } 4083 dirh->flags |= DIRH_COMPLETE; 4084 4085 free(fid, M_UDFTEMP); 4086 free(dirent, M_UDFTEMP); 4087 4088 return error; 4089 } 4090 4091 4092 /* --------------------------------------------------------------------- */ 4093 4094 /* 4095 * Directory read and manipulation functions. 4096 * 4097 */ 4098 4099 int 4100 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4101 struct long_ad *icb_loc, int *found) 4102 { 4103 struct udf_node *dir_node = VTOI(vp); 4104 struct dirhash *dirh; 4105 struct dirhash_entry *dirh_ep; 4106 struct fileid_desc *fid; 4107 struct dirent *dirent; 4108 uint64_t diroffset; 4109 uint32_t lb_size; 4110 int hit, error; 4111 4112 /* set default return */ 4113 *found = 0; 4114 4115 /* get our dirhash and make sure its read in */ 4116 dirhash_get(&dir_node->dir_hash); 4117 error = dirhash_fill(dir_node); 4118 if (error) { 4119 dirhash_put(dir_node->dir_hash); 4120 return error; 4121 } 4122 dirh = dir_node->dir_hash; 4123 4124 /* allocate temporary space for fid */ 4125 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4126 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4127 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4128 4129 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4130 namelen, namelen, name)); 4131 4132 /* search our dirhash hits */ 4133 memset(icb_loc, 0, sizeof(*icb_loc)); 4134 dirh_ep = NULL; 4135 for (;;) { 4136 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4137 /* if no hit, abort the search */ 4138 if (!hit) 4139 break; 4140 4141 /* check this hit */ 4142 diroffset = dirh_ep->offset; 4143 4144 /* transfer a new fid/dirent */ 4145 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4146 if (error) 4147 break; 4148 4149 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4150 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4151 4152 /* see if its our entry */ 4153 KASSERT(dirent->d_namlen == namelen); 4154 if (strncmp(dirent->d_name, name, namelen) == 0) { 4155 *found = 1; 4156 *icb_loc = fid->icb; 4157 break; 4158 } 4159 } 4160 free(fid, M_UDFTEMP); 4161 free(dirent, M_UDFTEMP); 4162 4163 dirhash_put(dir_node->dir_hash); 4164 4165 return error; 4166 } 4167 4168 /* --------------------------------------------------------------------- */ 4169 4170 static int 4171 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4172 struct long_ad *node_icb, struct long_ad *parent_icb, 4173 uint64_t parent_unique_id) 4174 { 4175 struct timespec now; 4176 struct icb_tag *icb; 4177 struct filetimes_extattr_entry *ft_extattr; 4178 uint64_t unique_id; 4179 uint32_t fidsize, lb_num; 4180 uint8_t *bpos; 4181 int crclen, attrlen; 4182 4183 lb_num = udf_rw32(node_icb->loc.lb_num); 4184 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4185 icb = &fe->icbtag; 4186 4187 /* 4188 * Always use strategy type 4 unless on WORM wich we don't support 4189 * (yet). Fill in defaults and set for internal allocation of data. 4190 */ 4191 icb->strat_type = udf_rw16(4); 4192 icb->max_num_entries = udf_rw16(1); 4193 icb->file_type = file_type; /* 8 bit */ 4194 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4195 4196 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4197 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4198 4199 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4200 4201 vfs_timestamp(&now); 4202 udf_timespec_to_timestamp(&now, &fe->atime); 4203 udf_timespec_to_timestamp(&now, &fe->attrtime); 4204 udf_timespec_to_timestamp(&now, &fe->mtime); 4205 4206 udf_set_regid(&fe->imp_id, IMPL_NAME); 4207 udf_add_impl_regid(ump, &fe->imp_id); 4208 4209 unique_id = udf_advance_uniqueid(ump); 4210 fe->unique_id = udf_rw64(unique_id); 4211 fe->l_ea = udf_rw32(0); 4212 4213 /* create extended attribute to record our creation time */ 4214 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4215 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4216 memset(ft_extattr, 0, attrlen); 4217 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4218 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4219 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4220 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4221 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4222 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4223 4224 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4225 (struct extattr_entry *) ft_extattr); 4226 free(ft_extattr, M_UDFTEMP); 4227 4228 /* if its a directory, create '..' */ 4229 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4230 fidsize = 0; 4231 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4232 fidsize = udf_create_parentfid(ump, 4233 (struct fileid_desc *) bpos, parent_icb, 4234 parent_unique_id); 4235 } 4236 4237 /* record fidlength information */ 4238 fe->inf_len = udf_rw64(fidsize); 4239 fe->l_ad = udf_rw32(fidsize); 4240 fe->logblks_rec = udf_rw64(0); /* intern */ 4241 4242 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4243 crclen += udf_rw32(fe->l_ea) + fidsize; 4244 fe->tag.desc_crc_len = udf_rw16(crclen); 4245 4246 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4247 4248 return fidsize; 4249 } 4250 4251 /* --------------------------------------------------------------------- */ 4252 4253 static int 4254 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4255 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4256 uint64_t parent_unique_id) 4257 { 4258 struct timespec now; 4259 struct icb_tag *icb; 4260 uint64_t unique_id; 4261 uint32_t fidsize, lb_num; 4262 uint8_t *bpos; 4263 int crclen; 4264 4265 lb_num = udf_rw32(node_icb->loc.lb_num); 4266 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4267 icb = &efe->icbtag; 4268 4269 /* 4270 * Always use strategy type 4 unless on WORM wich we don't support 4271 * (yet). Fill in defaults and set for internal allocation of data. 4272 */ 4273 icb->strat_type = udf_rw16(4); 4274 icb->max_num_entries = udf_rw16(1); 4275 icb->file_type = file_type; /* 8 bit */ 4276 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4277 4278 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4279 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4280 4281 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4282 4283 vfs_timestamp(&now); 4284 udf_timespec_to_timestamp(&now, &efe->ctime); 4285 udf_timespec_to_timestamp(&now, &efe->atime); 4286 udf_timespec_to_timestamp(&now, &efe->attrtime); 4287 udf_timespec_to_timestamp(&now, &efe->mtime); 4288 4289 udf_set_regid(&efe->imp_id, IMPL_NAME); 4290 udf_add_impl_regid(ump, &efe->imp_id); 4291 4292 unique_id = udf_advance_uniqueid(ump); 4293 efe->unique_id = udf_rw64(unique_id); 4294 efe->l_ea = udf_rw32(0); 4295 4296 /* if its a directory, create '..' */ 4297 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4298 fidsize = 0; 4299 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4300 fidsize = udf_create_parentfid(ump, 4301 (struct fileid_desc *) bpos, parent_icb, 4302 parent_unique_id); 4303 } 4304 4305 /* record fidlength information */ 4306 efe->obj_size = udf_rw64(fidsize); 4307 efe->inf_len = udf_rw64(fidsize); 4308 efe->l_ad = udf_rw32(fidsize); 4309 efe->logblks_rec = udf_rw64(0); /* intern */ 4310 4311 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4312 crclen += udf_rw32(efe->l_ea) + fidsize; 4313 efe->tag.desc_crc_len = udf_rw16(crclen); 4314 4315 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4316 4317 return fidsize; 4318 } 4319 4320 /* --------------------------------------------------------------------- */ 4321 4322 int 4323 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4324 struct udf_node *udf_node, struct componentname *cnp) 4325 { 4326 struct vnode *dvp = dir_node->vnode; 4327 struct dirhash *dirh; 4328 struct dirhash_entry *dirh_ep; 4329 struct file_entry *fe = dir_node->fe; 4330 struct extfile_entry *efe = dir_node->efe; 4331 struct fileid_desc *fid; 4332 struct dirent *dirent; 4333 uint64_t file_size, diroffset; 4334 uint32_t lb_size, fidsize; 4335 int found, error; 4336 char const *name = cnp->cn_nameptr; 4337 int namelen = cnp->cn_namelen; 4338 int hit, refcnt; 4339 4340 /* get our dirhash and make sure its read in */ 4341 dirhash_get(&dir_node->dir_hash); 4342 error = dirhash_fill(dir_node); 4343 if (error) { 4344 dirhash_put(dir_node->dir_hash); 4345 return error; 4346 } 4347 dirh = dir_node->dir_hash; 4348 4349 /* get directory filesize */ 4350 if (fe) { 4351 file_size = udf_rw64(fe->inf_len); 4352 } else { 4353 assert(efe); 4354 file_size = udf_rw64(efe->inf_len); 4355 } 4356 4357 /* allocate temporary space for fid */ 4358 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4359 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4360 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4361 4362 /* search our dirhash hits */ 4363 found = 0; 4364 dirh_ep = NULL; 4365 for (;;) { 4366 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4367 /* if no hit, abort the search */ 4368 if (!hit) 4369 break; 4370 4371 /* check this hit */ 4372 diroffset = dirh_ep->offset; 4373 4374 /* transfer a new fid/dirent */ 4375 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4376 if (error) 4377 break; 4378 4379 /* see if its our entry */ 4380 KASSERT(dirent->d_namlen == namelen); 4381 if (strncmp(dirent->d_name, name, namelen) == 0) { 4382 found = 1; 4383 break; 4384 } 4385 } 4386 4387 if (!found) 4388 error = ENOENT; 4389 if (error) 4390 goto error_out; 4391 4392 /* mark deleted */ 4393 fid->file_char |= UDF_FILE_CHAR_DEL; 4394 #ifdef UDF_COMPLETE_DELETE 4395 memset(&fid->icb, 0, sizeof(fid->icb)); 4396 #endif 4397 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4398 4399 /* get size of fid and compensate for the read_fid_stream advance */ 4400 fidsize = udf_fidsize(fid); 4401 diroffset -= fidsize; 4402 4403 /* write out */ 4404 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4405 fid, fidsize, diroffset, 4406 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4407 FSCRED, NULL, NULL); 4408 if (error) 4409 goto error_out; 4410 4411 /* get reference count of attached node */ 4412 if (udf_node->fe) { 4413 refcnt = udf_rw16(udf_node->fe->link_cnt); 4414 } else { 4415 KASSERT(udf_node->efe); 4416 refcnt = udf_rw16(udf_node->efe->link_cnt); 4417 } 4418 #ifdef UDF_COMPLETE_DELETE 4419 /* substract reference counter in attached node */ 4420 refcnt -= 1; 4421 if (udf_node->fe) { 4422 udf_node->fe->link_cnt = udf_rw16(refcnt); 4423 } else { 4424 udf_node->efe->link_cnt = udf_rw16(refcnt); 4425 } 4426 4427 /* prevent writeout when refcnt == 0 */ 4428 if (refcnt == 0) 4429 udf_node->i_flags |= IN_DELETED; 4430 4431 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4432 int drefcnt; 4433 4434 /* substract reference counter in directory node */ 4435 /* note subtract 2 (?) for its was also backreferenced */ 4436 if (dir_node->fe) { 4437 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4438 drefcnt -= 1; 4439 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4440 } else { 4441 KASSERT(dir_node->efe); 4442 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4443 drefcnt -= 1; 4444 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4445 } 4446 } 4447 4448 udf_node->i_flags |= IN_MODIFIED; 4449 dir_node->i_flags |= IN_MODIFIED; 4450 #endif 4451 /* if it is/was a hardlink adjust the file count */ 4452 if (refcnt > 0) 4453 udf_adjust_filecount(udf_node, -1); 4454 4455 /* remove from the dirhash */ 4456 dirhash_remove(dirh, dirent, diroffset, 4457 udf_fidsize(fid)); 4458 4459 error_out: 4460 free(fid, M_UDFTEMP); 4461 free(dirent, M_UDFTEMP); 4462 4463 dirhash_put(dir_node->dir_hash); 4464 4465 return error; 4466 } 4467 4468 /* --------------------------------------------------------------------- */ 4469 4470 /* 4471 * We are not allowed to split the fid tag itself over an logical block so 4472 * check the space remaining in the logical block. 4473 * 4474 * We try to select the smallest candidate for recycling or when none is 4475 * found, append a new one at the end of the directory. 4476 */ 4477 4478 int 4479 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4480 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4481 { 4482 struct vnode *dvp = dir_node->vnode; 4483 struct dirhash *dirh; 4484 struct dirhash_entry *dirh_ep; 4485 struct fileid_desc *fid; 4486 struct icb_tag *icbtag; 4487 struct charspec osta_charspec; 4488 struct dirent dirent; 4489 uint64_t unique_id, dir_size; 4490 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4491 uint32_t chosen_size, chosen_size_diff; 4492 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4493 int file_char, refcnt, icbflags, addr_type, hit, error; 4494 4495 /* get our dirhash and make sure its read in */ 4496 dirhash_get(&dir_node->dir_hash); 4497 error = dirhash_fill(dir_node); 4498 if (error) { 4499 dirhash_put(dir_node->dir_hash); 4500 return error; 4501 } 4502 dirh = dir_node->dir_hash; 4503 4504 /* get info */ 4505 lb_size = udf_rw32(ump->logical_vol->lb_size); 4506 udf_osta_charset(&osta_charspec); 4507 4508 if (dir_node->fe) { 4509 dir_size = udf_rw64(dir_node->fe->inf_len); 4510 icbtag = &dir_node->fe->icbtag; 4511 } else { 4512 dir_size = udf_rw64(dir_node->efe->inf_len); 4513 icbtag = &dir_node->efe->icbtag; 4514 } 4515 4516 icbflags = udf_rw16(icbtag->flags); 4517 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4518 4519 if (udf_node->fe) { 4520 unique_id = udf_rw64(udf_node->fe->unique_id); 4521 refcnt = udf_rw16(udf_node->fe->link_cnt); 4522 } else { 4523 unique_id = udf_rw64(udf_node->efe->unique_id); 4524 refcnt = udf_rw16(udf_node->efe->link_cnt); 4525 } 4526 4527 if (refcnt > 0) { 4528 unique_id = udf_advance_uniqueid(ump); 4529 udf_adjust_filecount(udf_node, 1); 4530 } 4531 4532 /* determine file characteristics */ 4533 file_char = 0; /* visible non deleted file and not stream metadata */ 4534 if (vap->va_type == VDIR) 4535 file_char = UDF_FILE_CHAR_DIR; 4536 4537 /* malloc scrap buffer */ 4538 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4539 bzero(fid, lb_size); 4540 4541 /* calculate _minimum_ fid size */ 4542 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4543 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4544 fidsize = UDF_FID_SIZE + fid->l_fi; 4545 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4546 4547 /* find position that will fit the FID */ 4548 chosen_fid_pos = dir_size; 4549 chosen_size = 0; 4550 chosen_size_diff = UINT_MAX; 4551 4552 /* shut up gcc */ 4553 dirent.d_namlen = 0; 4554 4555 /* search our dirhash hits */ 4556 error = 0; 4557 dirh_ep = NULL; 4558 for (;;) { 4559 hit = dirhash_lookup_freed(dirh, fidsize, &dirh_ep); 4560 /* if no hit, abort the search */ 4561 if (!hit) 4562 break; 4563 4564 /* check this hit for size */ 4565 this_fidsize = dirh_ep->entry_size; 4566 4567 /* check this hit */ 4568 fid_pos = dirh_ep->offset; 4569 end_fid_pos = fid_pos + this_fidsize; 4570 size_diff = this_fidsize - fidsize; 4571 lb_rest = lb_size - (end_fid_pos % lb_size); 4572 4573 #ifndef UDF_COMPLETE_DELETE 4574 /* transfer a new fid/dirent */ 4575 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4576 if (error) 4577 goto error_out; 4578 4579 /* only reuse entries that are wiped */ 4580 /* check if the len + loc are marked zero */ 4581 if (udf_rw32(fid->icb.len != 0)) 4582 continue; 4583 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4584 continue; 4585 if (udf_rw16(fid->icb.loc.part_num != 0)) 4586 continue; 4587 #endif /* UDF_COMPLETE_DELETE */ 4588 4589 /* select if not splitting the tag and its smaller */ 4590 if ((size_diff >= 0) && 4591 (size_diff < chosen_size_diff) && 4592 (lb_rest >= sizeof(struct desc_tag))) 4593 { 4594 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4595 if ((size_diff == 0) || (size_diff >= 32)) { 4596 chosen_fid_pos = fid_pos; 4597 chosen_size = this_fidsize; 4598 chosen_size_diff = size_diff; 4599 } 4600 } 4601 } 4602 4603 4604 /* extend directory if no other candidate found */ 4605 if (chosen_size == 0) { 4606 chosen_fid_pos = dir_size; 4607 chosen_size = fidsize; 4608 chosen_size_diff = 0; 4609 4610 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4611 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4612 /* pre-grow directory to see if we're to switch */ 4613 udf_grow_node(dir_node, dir_size + chosen_size); 4614 4615 icbflags = udf_rw16(icbtag->flags); 4616 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4617 } 4618 4619 /* make sure the next fid desc_tag won't be splitted */ 4620 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4621 end_fid_pos = chosen_fid_pos + chosen_size; 4622 lb_rest = lb_size - (end_fid_pos % lb_size); 4623 4624 /* pad with implementation use regid if needed */ 4625 if (lb_rest < sizeof(struct desc_tag)) 4626 chosen_size += 32; 4627 } 4628 } 4629 chosen_size_diff = chosen_size - fidsize; 4630 4631 /* populate the FID */ 4632 memset(fid, 0, lb_size); 4633 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4634 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4635 fid->file_char = file_char; 4636 fid->icb = udf_node->loc; 4637 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4638 fid->l_iu = udf_rw16(0); 4639 4640 if (chosen_size > fidsize) { 4641 /* insert implementation-use regid to space it correctly */ 4642 fid->l_iu = udf_rw16(chosen_size_diff); 4643 4644 /* set implementation use */ 4645 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4646 udf_add_impl_regid(ump, (struct regid *) fid->data); 4647 } 4648 4649 /* fill in name */ 4650 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4651 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4652 4653 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4654 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4655 4656 /* writeout FID/update parent directory */ 4657 error = vn_rdwr(UIO_WRITE, dvp, 4658 fid, chosen_size, chosen_fid_pos, 4659 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4660 FSCRED, NULL, NULL); 4661 4662 if (error) 4663 goto error_out; 4664 4665 /* add reference counter in attached node */ 4666 if (udf_node->fe) { 4667 refcnt = udf_rw16(udf_node->fe->link_cnt); 4668 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 4669 } else { 4670 KASSERT(udf_node->efe); 4671 refcnt = udf_rw16(udf_node->efe->link_cnt); 4672 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 4673 } 4674 4675 /* mark not deleted if it was... just in case, but do warn */ 4676 if (udf_node->i_flags & IN_DELETED) { 4677 printf("udf: warning, marking a file undeleted\n"); 4678 udf_node->i_flags &= ~IN_DELETED; 4679 } 4680 4681 if (file_char & UDF_FILE_CHAR_DIR) { 4682 /* add reference counter in directory node for '..' */ 4683 if (dir_node->fe) { 4684 refcnt = udf_rw16(dir_node->fe->link_cnt); 4685 refcnt++; 4686 dir_node->fe->link_cnt = udf_rw16(refcnt); 4687 } else { 4688 KASSERT(dir_node->efe); 4689 refcnt = udf_rw16(dir_node->efe->link_cnt); 4690 refcnt++; 4691 dir_node->efe->link_cnt = udf_rw16(refcnt); 4692 } 4693 } 4694 4695 /* append to the dirhash */ 4696 dirent.d_namlen = cnp->cn_namelen; 4697 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 4698 dirhash_enter(dirh, &dirent, chosen_fid_pos, 4699 udf_fidsize(fid), 1); 4700 4701 /* note updates */ 4702 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 4703 /* VN_KNOTE(udf_node, ...) */ 4704 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 4705 4706 error_out: 4707 free(fid, M_TEMP); 4708 4709 dirhash_put(dir_node->dir_hash); 4710 4711 return error; 4712 } 4713 4714 /* --------------------------------------------------------------------- */ 4715 4716 /* 4717 * Each node can have an attached streamdir node though not recursively. These 4718 * are otherwise known as named substreams/named extended attributes that have 4719 * no size limitations. 4720 * 4721 * `Normal' extended attributes are indicated with a number and are recorded 4722 * in either the fe/efe descriptor itself for small descriptors or recorded in 4723 * the attached extended attribute file. Since these spaces can get 4724 * fragmented, care ought to be taken. 4725 * 4726 * Since the size of the space reserved for allocation descriptors is limited, 4727 * there is a mechanim provided for extending this space; this is done by a 4728 * special extent to allow schrinking of the allocations without breaking the 4729 * linkage to the allocation extent descriptor. 4730 */ 4731 4732 int 4733 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 4734 struct udf_node **udf_noderes) 4735 { 4736 union dscrptr *dscr; 4737 struct udf_node *udf_node; 4738 struct vnode *nvp; 4739 struct long_ad icb_loc, last_fe_icb_loc; 4740 uint64_t file_size; 4741 uint32_t lb_size, sector, dummy; 4742 uint8_t *file_data; 4743 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 4744 int slot, eof, error; 4745 4746 DPRINTF(NODE, ("udf_get_node called\n")); 4747 *udf_noderes = udf_node = NULL; 4748 4749 /* lock to disallow simultanious creation of same udf_node */ 4750 mutex_enter(&ump->get_node_lock); 4751 4752 DPRINTF(NODE, ("\tlookup in hash table\n")); 4753 /* lookup in hash table */ 4754 assert(ump); 4755 assert(node_icb_loc); 4756 udf_node = udf_hash_lookup(ump, node_icb_loc); 4757 if (udf_node) { 4758 DPRINTF(NODE, ("\tgot it from the hash!\n")); 4759 /* vnode is returned locked */ 4760 *udf_noderes = udf_node; 4761 mutex_exit(&ump->get_node_lock); 4762 return 0; 4763 } 4764 4765 /* garbage check: translate udf_node_icb_loc to sectornr */ 4766 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 4767 if (error) { 4768 /* no use, this will fail anyway */ 4769 mutex_exit(&ump->get_node_lock); 4770 return EINVAL; 4771 } 4772 4773 /* build udf_node (do initialise!) */ 4774 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4775 memset(udf_node, 0, sizeof(struct udf_node)); 4776 4777 DPRINTF(NODE, ("\tget new vnode\n")); 4778 /* give it a vnode */ 4779 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 4780 if (error) { 4781 pool_put(&udf_node_pool, udf_node); 4782 mutex_exit(&ump->get_node_lock); 4783 return error; 4784 } 4785 4786 /* always return locked vnode */ 4787 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 4788 /* recycle vnode and unlock; simultanious will fail too */ 4789 ungetnewvnode(nvp); 4790 mutex_exit(&ump->get_node_lock); 4791 return error; 4792 } 4793 4794 /* initialise crosslinks, note location of fe/efe for hashing */ 4795 udf_node->ump = ump; 4796 udf_node->vnode = nvp; 4797 nvp->v_data = udf_node; 4798 udf_node->loc = *node_icb_loc; 4799 udf_node->lockf = 0; 4800 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4801 cv_init(&udf_node->node_lock, "udf_nlk"); 4802 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 4803 udf_node->outstanding_bufs = 0; 4804 udf_node->outstanding_nodedscr = 0; 4805 4806 if (memcmp(&udf_node->loc, &ump->fileset_desc->rootdir_icb, sizeof(struct long_ad)) == 0) 4807 nvp->v_vflag |= VV_ROOT; 4808 4809 /* insert into the hash lookup */ 4810 udf_register_node(udf_node); 4811 4812 /* safe to unlock, the entry is in the hash table, vnode is locked */ 4813 mutex_exit(&ump->get_node_lock); 4814 4815 icb_loc = *node_icb_loc; 4816 needs_indirect = 0; 4817 strat4096 = 0; 4818 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 4819 file_size = 0; 4820 file_data = NULL; 4821 lb_size = udf_rw32(ump->logical_vol->lb_size); 4822 4823 DPRINTF(NODE, ("\tstart reading descriptors\n")); 4824 do { 4825 /* try to read in fe/efe */ 4826 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4827 4828 /* blank sector marks end of sequence, check this */ 4829 if ((dscr == NULL) && (!strat4096)) 4830 error = ENOENT; 4831 4832 /* break if read error or blank sector */ 4833 if (error || (dscr == NULL)) 4834 break; 4835 4836 /* process descriptor based on the descriptor type */ 4837 dscr_type = udf_rw16(dscr->tag.id); 4838 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 4839 4840 /* if dealing with an indirect entry, follow the link */ 4841 if (dscr_type == TAGID_INDIRECTENTRY) { 4842 needs_indirect = 0; 4843 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4844 icb_loc = dscr->inde.indirect_icb; 4845 continue; 4846 } 4847 4848 /* only file entries and extended file entries allowed here */ 4849 if ((dscr_type != TAGID_FENTRY) && 4850 (dscr_type != TAGID_EXTFENTRY)) { 4851 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4852 error = ENOENT; 4853 break; 4854 } 4855 4856 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 4857 4858 /* choose this one */ 4859 last_fe_icb_loc = icb_loc; 4860 4861 /* record and process/update (ext)fentry */ 4862 file_data = NULL; 4863 if (dscr_type == TAGID_FENTRY) { 4864 if (udf_node->fe) 4865 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4866 udf_node->fe); 4867 udf_node->fe = &dscr->fe; 4868 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 4869 udf_file_type = udf_node->fe->icbtag.file_type; 4870 file_size = udf_rw64(udf_node->fe->inf_len); 4871 file_data = udf_node->fe->data; 4872 } else { 4873 if (udf_node->efe) 4874 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4875 udf_node->efe); 4876 udf_node->efe = &dscr->efe; 4877 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 4878 udf_file_type = udf_node->efe->icbtag.file_type; 4879 file_size = udf_rw64(udf_node->efe->inf_len); 4880 file_data = udf_node->efe->data; 4881 } 4882 4883 /* check recording strategy (structure) */ 4884 4885 /* 4886 * Strategy 4096 is a daisy linked chain terminating with an 4887 * unrecorded sector or a TERM descriptor. The next 4888 * descriptor is to be found in the sector that follows the 4889 * current sector. 4890 */ 4891 if (strat == 4096) { 4892 strat4096 = 1; 4893 needs_indirect = 1; 4894 4895 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 4896 } 4897 4898 /* 4899 * Strategy 4 is the normal strategy and terminates, but if 4900 * we're in strategy 4096, we can't have strategy 4 mixed in 4901 */ 4902 4903 if (strat == 4) { 4904 if (strat4096) { 4905 error = EINVAL; 4906 break; 4907 } 4908 break; /* done */ 4909 } 4910 } while (!error); 4911 4912 /* first round of cleanup code */ 4913 if (error) { 4914 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 4915 /* recycle udf_node */ 4916 udf_dispose_node(udf_node); 4917 4918 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4919 nvp->v_data = NULL; 4920 ungetnewvnode(nvp); 4921 4922 return EINVAL; /* error code ok? */ 4923 } 4924 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 4925 4926 /* assert no references to dscr anymore beyong this point */ 4927 assert((udf_node->fe) || (udf_node->efe)); 4928 dscr = NULL; 4929 4930 /* 4931 * Remember where to record an updated version of the descriptor. If 4932 * there is a sequence of indirect entries, icb_loc will have been 4933 * updated. Its the write disipline to allocate new space and to make 4934 * sure the chain is maintained. 4935 * 4936 * `needs_indirect' flags if the next location is to be filled with 4937 * with an indirect entry. 4938 */ 4939 udf_node->write_loc = icb_loc; 4940 udf_node->needs_indirect = needs_indirect; 4941 4942 /* 4943 * Go trough all allocations extents of this descriptor and when 4944 * encountering a redirect read in the allocation extension. These are 4945 * daisy-chained. 4946 */ 4947 UDF_LOCK_NODE(udf_node, 0); 4948 udf_node->num_extensions = 0; 4949 4950 error = 0; 4951 slot = 0; 4952 for (;;) { 4953 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 4954 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 4955 "lb_num = %d, part = %d\n", slot, eof, 4956 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 4957 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 4958 udf_rw32(icb_loc.loc.lb_num), 4959 udf_rw16(icb_loc.loc.part_num))); 4960 if (eof) 4961 break; 4962 slot++; 4963 4964 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 4965 continue; 4966 4967 DPRINTF(NODE, ("\tgot redirect extent\n")); 4968 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 4969 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 4970 "too many allocation extensions on " 4971 "udf_node\n")); 4972 error = EINVAL; 4973 break; 4974 } 4975 4976 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 4977 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 4978 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 4979 "extension size in udf_node\n")); 4980 error = EINVAL; 4981 break; 4982 } 4983 4984 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 4985 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 4986 /* load in allocation extent */ 4987 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4988 if (error || (dscr == NULL)) 4989 break; 4990 4991 /* process read-in descriptor */ 4992 dscr_type = udf_rw16(dscr->tag.id); 4993 4994 if (dscr_type != TAGID_ALLOCEXTENT) { 4995 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4996 error = ENOENT; 4997 break; 4998 } 4999 5000 DPRINTF(NODE, ("\trecording redirect extent\n")); 5001 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5002 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5003 5004 udf_node->num_extensions++; 5005 5006 } /* while */ 5007 UDF_UNLOCK_NODE(udf_node, 0); 5008 5009 /* second round of cleanup code */ 5010 if (error) { 5011 /* recycle udf_node */ 5012 udf_dispose_node(udf_node); 5013 5014 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5015 nvp->v_data = NULL; 5016 ungetnewvnode(nvp); 5017 5018 return EINVAL; /* error code ok? */ 5019 } 5020 5021 DPRINTF(NODE, ("\tnode read in fine\n")); 5022 5023 /* 5024 * Translate UDF filetypes into vnode types. 5025 * 5026 * Systemfiles like the meta main and mirror files are not treated as 5027 * normal files, so we type them as having no type. UDF dictates that 5028 * they are not allowed to be visible. 5029 */ 5030 5031 switch (udf_file_type) { 5032 case UDF_ICB_FILETYPE_DIRECTORY : 5033 case UDF_ICB_FILETYPE_STREAMDIR : 5034 nvp->v_type = VDIR; 5035 break; 5036 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5037 nvp->v_type = VBLK; 5038 break; 5039 case UDF_ICB_FILETYPE_CHARDEVICE : 5040 nvp->v_type = VCHR; 5041 break; 5042 case UDF_ICB_FILETYPE_SOCKET : 5043 nvp->v_type = VSOCK; 5044 break; 5045 case UDF_ICB_FILETYPE_FIFO : 5046 nvp->v_type = VFIFO; 5047 break; 5048 case UDF_ICB_FILETYPE_SYMLINK : 5049 nvp->v_type = VLNK; 5050 break; 5051 case UDF_ICB_FILETYPE_VAT : 5052 case UDF_ICB_FILETYPE_META_MAIN : 5053 case UDF_ICB_FILETYPE_META_MIRROR : 5054 nvp->v_type = VNON; 5055 break; 5056 case UDF_ICB_FILETYPE_RANDOMACCESS : 5057 case UDF_ICB_FILETYPE_REALTIME : 5058 nvp->v_type = VREG; 5059 break; 5060 default: 5061 /* YIKES, something else */ 5062 nvp->v_type = VNON; 5063 } 5064 5065 /* TODO specfs, fifofs etc etc. vnops setting */ 5066 5067 /* don't forget to set vnode's v_size */ 5068 uvm_vnp_setsize(nvp, file_size); 5069 5070 /* TODO ext attr and streamdir udf_nodes */ 5071 5072 *udf_noderes = udf_node; 5073 5074 return 0; 5075 } 5076 5077 /* --------------------------------------------------------------------- */ 5078 5079 int 5080 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5081 { 5082 union dscrptr *dscr; 5083 struct long_ad *loc; 5084 int extnr, flags, error; 5085 5086 DPRINTF(NODE, ("udf_writeout_node called\n")); 5087 5088 KASSERT(udf_node->outstanding_bufs == 0); 5089 KASSERT(udf_node->outstanding_nodedscr == 0); 5090 5091 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5092 5093 if (udf_node->i_flags & IN_DELETED) { 5094 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5095 return 0; 5096 } 5097 5098 /* lock node */ 5099 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5100 UDF_LOCK_NODE(udf_node, flags); 5101 5102 /* at least one descriptor writeout */ 5103 udf_node->outstanding_nodedscr = 1; 5104 5105 /* we're going to write out the descriptor so clear the flags */ 5106 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5107 5108 /* if we were rebuild, write out the allocation extents */ 5109 if (udf_node->i_flags & IN_NODE_REBUILD) { 5110 /* mark outstanding node descriptors and issue them */ 5111 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5112 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5113 loc = &udf_node->ext_loc[extnr]; 5114 dscr = (union dscrptr *) udf_node->ext[extnr]; 5115 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5116 if (error) 5117 return error; 5118 } 5119 /* mark allocation extents written out */ 5120 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5121 } 5122 5123 if (udf_node->fe) { 5124 KASSERT(udf_node->efe == NULL); 5125 dscr = (union dscrptr *) udf_node->fe; 5126 } else { 5127 KASSERT(udf_node->efe); 5128 KASSERT(udf_node->fe == NULL); 5129 dscr = (union dscrptr *) udf_node->efe; 5130 } 5131 KASSERT(dscr); 5132 5133 loc = &udf_node->write_loc; 5134 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5135 return error; 5136 } 5137 5138 /* --------------------------------------------------------------------- */ 5139 5140 int 5141 udf_dispose_node(struct udf_node *udf_node) 5142 { 5143 struct vnode *vp; 5144 int extnr; 5145 5146 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5147 if (!udf_node) { 5148 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5149 return 0; 5150 } 5151 5152 vp = udf_node->vnode; 5153 #ifdef DIAGNOSTIC 5154 if (vp->v_numoutput) 5155 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5156 "v_numoutput = %d", udf_node, vp->v_numoutput); 5157 #endif 5158 5159 /* wait until out of sync (just in case we happen to stumble over one */ 5160 KASSERT(!mutex_owned(&mntvnode_lock)); 5161 mutex_enter(&mntvnode_lock); 5162 while (udf_node->i_flags & IN_SYNCED) { 5163 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5164 hz/16); 5165 } 5166 mutex_exit(&mntvnode_lock); 5167 5168 /* TODO extended attributes and streamdir */ 5169 5170 /* remove dirhash if present */ 5171 dirhash_purge(&udf_node->dir_hash); 5172 5173 /* remove from our hash lookup table */ 5174 udf_deregister_node(udf_node); 5175 5176 /* destroy our lock */ 5177 mutex_destroy(&udf_node->node_mutex); 5178 cv_destroy(&udf_node->node_lock); 5179 5180 /* dissociate our udf_node from the vnode */ 5181 genfs_node_destroy(udf_node->vnode); 5182 vp->v_data = NULL; 5183 5184 /* free associated memory and the node itself */ 5185 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5186 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5187 udf_node->ext[extnr]); 5188 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5189 } 5190 5191 if (udf_node->fe) 5192 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5193 udf_node->fe); 5194 if (udf_node->efe) 5195 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5196 udf_node->efe); 5197 5198 udf_node->fe = (void *) 0xdeadaaaa; 5199 udf_node->efe = (void *) 0xdeadbbbb; 5200 udf_node->ump = (void *) 0xdeadbeef; 5201 pool_put(&udf_node_pool, udf_node); 5202 5203 return 0; 5204 } 5205 5206 5207 5208 /* 5209 * create a new node using the specified vnodeops, vap and cnp but with the 5210 * udf_file_type. This allows special files to be created. Use with care. 5211 */ 5212 5213 static int 5214 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5215 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5216 { 5217 union dscrptr *dscr; 5218 struct udf_node *dir_node = VTOI(dvp);; 5219 struct udf_node *udf_node; 5220 struct udf_mount *ump = dir_node->ump; 5221 struct vnode *nvp; 5222 struct long_ad node_icb_loc; 5223 uint64_t parent_unique_id; 5224 uint64_t lmapping; 5225 uint32_t lb_size, lb_num; 5226 uint16_t vpart_num; 5227 uid_t uid; 5228 gid_t gid, parent_gid; 5229 int fid_size, error; 5230 5231 lb_size = udf_rw32(ump->logical_vol->lb_size); 5232 *vpp = NULL; 5233 5234 /* allocate vnode */ 5235 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5236 if (error) 5237 return error; 5238 5239 /* lock node */ 5240 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5241 if (error) { 5242 nvp->v_data = NULL; 5243 ungetnewvnode(nvp); 5244 return error; 5245 } 5246 5247 /* get disc allocation for one logical block */ 5248 vpart_num = ump->node_part; 5249 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5250 vpart_num, &lmapping); 5251 lb_num = lmapping; 5252 if (error) { 5253 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5254 ungetnewvnode(nvp); 5255 return error; 5256 } 5257 5258 /* initialise pointer to location */ 5259 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5260 node_icb_loc.len = lb_size; 5261 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5262 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5263 5264 /* build udf_node (do initialise!) */ 5265 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5266 memset(udf_node, 0, sizeof(struct udf_node)); 5267 5268 /* initialise crosslinks, note location of fe/efe for hashing */ 5269 /* bugalert: synchronise with udf_get_node() */ 5270 udf_node->ump = ump; 5271 udf_node->vnode = nvp; 5272 nvp->v_data = udf_node; 5273 udf_node->loc = node_icb_loc; 5274 udf_node->write_loc = node_icb_loc; 5275 udf_node->lockf = 0; 5276 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5277 cv_init(&udf_node->node_lock, "udf_nlk"); 5278 udf_node->outstanding_bufs = 0; 5279 udf_node->outstanding_nodedscr = 0; 5280 5281 /* initialise genfs */ 5282 genfs_node_init(nvp, &udf_genfsops); 5283 5284 /* insert into the hash lookup */ 5285 udf_register_node(udf_node); 5286 5287 /* get parent's unique ID for refering '..' if its a directory */ 5288 if (dir_node->fe) { 5289 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5290 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5291 } else { 5292 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5293 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5294 } 5295 5296 /* get descriptor */ 5297 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5298 5299 /* choose a fe or an efe for it */ 5300 if (ump->logical_vol->tag.descriptor_ver == 2) { 5301 udf_node->fe = &dscr->fe; 5302 fid_size = udf_create_new_fe(ump, udf_node->fe, 5303 udf_file_type, &udf_node->loc, 5304 &dir_node->loc, parent_unique_id); 5305 /* TODO add extended attribute for creation time */ 5306 } else { 5307 udf_node->efe = &dscr->efe; 5308 fid_size = udf_create_new_efe(ump, udf_node->efe, 5309 udf_file_type, &udf_node->loc, 5310 &dir_node->loc, parent_unique_id); 5311 } 5312 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5313 5314 /* update vnode's size and type */ 5315 nvp->v_type = vap->va_type; 5316 uvm_vnp_setsize(nvp, fid_size); 5317 5318 /* set access mode */ 5319 udf_setaccessmode(udf_node, vap->va_mode); 5320 5321 /* set ownership */ 5322 uid = kauth_cred_geteuid(cnp->cn_cred); 5323 gid = parent_gid; 5324 udf_setownership(udf_node, uid, gid); 5325 5326 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5327 if (error) { 5328 /* free disc allocation for node */ 5329 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5330 5331 /* recycle udf_node */ 5332 udf_dispose_node(udf_node); 5333 vput(nvp); 5334 5335 *vpp = NULL; 5336 return error; 5337 } 5338 5339 /* adjust file count */ 5340 udf_adjust_filecount(udf_node, 1); 5341 5342 /* return result */ 5343 *vpp = nvp; 5344 5345 return 0; 5346 } 5347 5348 5349 int 5350 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5351 struct componentname *cnp) 5352 { 5353 int (**vnodeops)(void *); 5354 int udf_file_type; 5355 5356 DPRINTF(NODE, ("udf_create_node called\n")); 5357 5358 /* what type are we creating ? */ 5359 vnodeops = udf_vnodeop_p; 5360 /* start with a default */ 5361 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5362 5363 *vpp = NULL; 5364 5365 switch (vap->va_type) { 5366 case VREG : 5367 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5368 break; 5369 case VDIR : 5370 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5371 break; 5372 case VLNK : 5373 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5374 break; 5375 case VBLK : 5376 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5377 /* specfs */ 5378 return ENOTSUP; 5379 break; 5380 case VCHR : 5381 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5382 /* specfs */ 5383 return ENOTSUP; 5384 break; 5385 case VFIFO : 5386 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5387 /* specfs */ 5388 return ENOTSUP; 5389 break; 5390 case VSOCK : 5391 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5392 /* specfs */ 5393 return ENOTSUP; 5394 break; 5395 case VNON : 5396 case VBAD : 5397 default : 5398 /* nothing; can we even create these? */ 5399 return EINVAL; 5400 } 5401 5402 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5403 } 5404 5405 /* --------------------------------------------------------------------- */ 5406 5407 static void 5408 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5409 { 5410 struct udf_mount *ump = udf_node->ump; 5411 uint32_t lb_size, lb_num, len, num_lb; 5412 uint16_t vpart_num; 5413 5414 /* is there really one? */ 5415 if (mem == NULL) 5416 return; 5417 5418 /* got a descriptor here */ 5419 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5420 lb_num = udf_rw32(loc->loc.lb_num); 5421 vpart_num = udf_rw16(loc->loc.part_num); 5422 5423 lb_size = udf_rw32(ump->logical_vol->lb_size); 5424 num_lb = (len + lb_size -1) / lb_size; 5425 5426 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5427 } 5428 5429 void 5430 udf_delete_node(struct udf_node *udf_node) 5431 { 5432 void *dscr; 5433 struct udf_mount *ump; 5434 struct long_ad *loc; 5435 int extnr, lvint, dummy; 5436 5437 ump = udf_node->ump; 5438 5439 /* paranoia check on integrity; should be open!; we could panic */ 5440 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5441 if (lvint == UDF_INTEGRITY_CLOSED) 5442 printf("\tIntegrity was CLOSED!\n"); 5443 5444 /* whatever the node type, change its size to zero */ 5445 (void) udf_resize_node(udf_node, 0, &dummy); 5446 5447 /* force it to be `clean'; no use writing it out */ 5448 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5449 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5450 5451 /* adjust file count */ 5452 udf_adjust_filecount(udf_node, -1); 5453 5454 /* 5455 * Free its allocated descriptors; memory will be released when 5456 * vop_reclaim() is called. 5457 */ 5458 loc = &udf_node->loc; 5459 5460 dscr = udf_node->fe; 5461 udf_free_descriptor_space(udf_node, loc, dscr); 5462 dscr = udf_node->efe; 5463 udf_free_descriptor_space(udf_node, loc, dscr); 5464 5465 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5466 dscr = udf_node->ext[extnr]; 5467 loc = &udf_node->ext_loc[extnr]; 5468 udf_free_descriptor_space(udf_node, loc, dscr); 5469 } 5470 } 5471 5472 /* --------------------------------------------------------------------- */ 5473 5474 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5475 int 5476 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5477 { 5478 struct file_entry *fe = udf_node->fe; 5479 struct extfile_entry *efe = udf_node->efe; 5480 uint64_t file_size; 5481 int error; 5482 5483 if (fe) { 5484 file_size = udf_rw64(fe->inf_len); 5485 } else { 5486 assert(udf_node->efe); 5487 file_size = udf_rw64(efe->inf_len); 5488 } 5489 5490 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5491 file_size, new_size)); 5492 5493 /* if not changing, we're done */ 5494 if (file_size == new_size) 5495 return 0; 5496 5497 *extended = (new_size > file_size); 5498 if (*extended) { 5499 error = udf_grow_node(udf_node, new_size); 5500 } else { 5501 error = udf_shrink_node(udf_node, new_size); 5502 } 5503 5504 return error; 5505 } 5506 5507 5508 /* --------------------------------------------------------------------- */ 5509 5510 void 5511 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5512 struct timespec *mod, struct timespec *birth) 5513 { 5514 struct timespec now; 5515 struct file_entry *fe; 5516 struct extfile_entry *efe; 5517 struct filetimes_extattr_entry *ft_extattr; 5518 struct timestamp *atime, *mtime, *attrtime, *ctime; 5519 struct timestamp fe_ctime; 5520 struct timespec cur_birth; 5521 uint32_t offset, a_l; 5522 uint8_t *filedata; 5523 int error; 5524 5525 /* protect against rogue values */ 5526 if (!udf_node) 5527 return; 5528 5529 fe = udf_node->fe; 5530 efe = udf_node->efe; 5531 5532 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5533 return; 5534 5535 /* get descriptor information */ 5536 if (fe) { 5537 atime = &fe->atime; 5538 mtime = &fe->mtime; 5539 attrtime = &fe->attrtime; 5540 filedata = fe->data; 5541 5542 /* initial save dummy setting */ 5543 ctime = &fe_ctime; 5544 5545 /* check our extended attribute if present */ 5546 error = udf_extattr_search_intern(udf_node, 5547 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5548 if (!error) { 5549 ft_extattr = (struct filetimes_extattr_entry *) 5550 (filedata + offset); 5551 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5552 ctime = &ft_extattr->times[0]; 5553 } 5554 /* TODO create the extended attribute if not found ? */ 5555 } else { 5556 assert(udf_node->efe); 5557 atime = &efe->atime; 5558 mtime = &efe->mtime; 5559 attrtime = &efe->attrtime; 5560 ctime = &efe->ctime; 5561 } 5562 5563 vfs_timestamp(&now); 5564 5565 /* set access time */ 5566 if (udf_node->i_flags & IN_ACCESS) { 5567 if (acc == NULL) 5568 acc = &now; 5569 udf_timespec_to_timestamp(acc, atime); 5570 } 5571 5572 /* set modification time */ 5573 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5574 if (mod == NULL) 5575 mod = &now; 5576 udf_timespec_to_timestamp(mod, mtime); 5577 5578 /* ensure birthtime is older than set modification! */ 5579 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5580 if ((cur_birth.tv_sec > mod->tv_sec) || 5581 ((cur_birth.tv_sec == mod->tv_sec) && 5582 (cur_birth.tv_nsec > mod->tv_nsec))) { 5583 udf_timespec_to_timestamp(mod, ctime); 5584 } 5585 } 5586 5587 /* update birthtime if specified */ 5588 /* XXX we asume here that given birthtime is older than mod */ 5589 if (birth && (birth->tv_sec != VNOVAL)) { 5590 udf_timespec_to_timestamp(birth, ctime); 5591 } 5592 5593 /* set change time */ 5594 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5595 udf_timespec_to_timestamp(&now, attrtime); 5596 5597 /* notify updates to the node itself */ 5598 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5599 udf_node->i_flags |= IN_ACCESSED; 5600 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5601 udf_node->i_flags |= IN_MODIFIED; 5602 5603 /* clear modification flags */ 5604 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5605 } 5606 5607 /* --------------------------------------------------------------------- */ 5608 5609 int 5610 udf_update(struct vnode *vp, struct timespec *acc, 5611 struct timespec *mod, struct timespec *birth, int updflags) 5612 { 5613 union dscrptr *dscrptr; 5614 struct udf_node *udf_node = VTOI(vp); 5615 struct udf_mount *ump = udf_node->ump; 5616 struct regid *impl_id; 5617 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5618 int waitfor, flags; 5619 5620 #ifdef DEBUG 5621 char bits[128]; 5622 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5623 updflags)); 5624 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5625 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5626 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5627 #endif 5628 5629 /* set our times */ 5630 udf_itimes(udf_node, acc, mod, birth); 5631 5632 /* set our implementation id */ 5633 if (udf_node->fe) { 5634 dscrptr = (union dscrptr *) udf_node->fe; 5635 impl_id = &udf_node->fe->imp_id; 5636 } else { 5637 dscrptr = (union dscrptr *) udf_node->efe; 5638 impl_id = &udf_node->efe->imp_id; 5639 } 5640 5641 /* set our ID */ 5642 udf_set_regid(impl_id, IMPL_NAME); 5643 udf_add_impl_regid(ump, impl_id); 5644 5645 /* update our crc! on RMW we are not allowed to change a thing */ 5646 udf_validate_tag_and_crc_sums(dscrptr); 5647 5648 /* if called when mounted readonly, never write back */ 5649 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5650 return 0; 5651 5652 /* check if the node is dirty 'enough'*/ 5653 if (updflags & UPDATE_CLOSE) { 5654 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5655 } else { 5656 flags = udf_node->i_flags & IN_MODIFIED; 5657 } 5658 if (flags == 0) 5659 return 0; 5660 5661 /* determine if we need to write sync or async */ 5662 waitfor = 0; 5663 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5664 /* sync mounted */ 5665 waitfor = updflags & UPDATE_WAIT; 5666 if (updflags & UPDATE_DIROP) 5667 waitfor |= UPDATE_WAIT; 5668 } 5669 if (waitfor) 5670 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5671 5672 return 0; 5673 } 5674 5675 5676 /* --------------------------------------------------------------------- */ 5677 5678 5679 /* 5680 * Read one fid and process it into a dirent and advance to the next (*fid) 5681 * has to be allocated a logical block in size, (*dirent) struct dirent length 5682 */ 5683 5684 int 5685 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5686 struct fileid_desc *fid, struct dirent *dirent) 5687 { 5688 struct udf_node *dir_node = VTOI(vp); 5689 struct udf_mount *ump = dir_node->ump; 5690 struct file_entry *fe = dir_node->fe; 5691 struct extfile_entry *efe = dir_node->efe; 5692 uint32_t fid_size, lb_size; 5693 uint64_t file_size; 5694 char *fid_name; 5695 int enough, error; 5696 5697 assert(fid); 5698 assert(dirent); 5699 assert(dir_node); 5700 assert(offset); 5701 assert(*offset != 1); 5702 5703 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5704 /* check if we're past the end of the directory */ 5705 if (fe) { 5706 file_size = udf_rw64(fe->inf_len); 5707 } else { 5708 assert(dir_node->efe); 5709 file_size = udf_rw64(efe->inf_len); 5710 } 5711 if (*offset >= file_size) 5712 return EINVAL; 5713 5714 /* get maximum length of FID descriptor */ 5715 lb_size = udf_rw32(ump->logical_vol->lb_size); 5716 5717 /* initialise return values */ 5718 fid_size = 0; 5719 memset(dirent, 0, sizeof(struct dirent)); 5720 memset(fid, 0, lb_size); 5721 5722 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5723 if (!enough) { 5724 /* short dir ... */ 5725 return EIO; 5726 } 5727 5728 error = vn_rdwr(UIO_READ, vp, 5729 fid, MIN(file_size - (*offset), lb_size), *offset, 5730 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5731 NULL, NULL); 5732 if (error) 5733 return error; 5734 5735 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5736 /* 5737 * Check if we got a whole descriptor. 5738 * TODO Try to `resync' directory stream when something is very wrong. 5739 */ 5740 5741 /* check if our FID header is OK */ 5742 error = udf_check_tag(fid); 5743 if (error) { 5744 goto brokendir; 5745 } 5746 DPRINTF(FIDS, ("\ttag check ok\n")); 5747 5748 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5749 error = EIO; 5750 goto brokendir; 5751 } 5752 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5753 5754 /* check for length */ 5755 fid_size = udf_fidsize(fid); 5756 enough = (file_size - (*offset) >= fid_size); 5757 if (!enough) { 5758 error = EIO; 5759 goto brokendir; 5760 } 5761 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5762 5763 /* check FID contents */ 5764 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5765 brokendir: 5766 if (error) { 5767 /* note that is sometimes a bit quick to report */ 5768 printf("BROKEN DIRECTORY ENTRY\n"); 5769 /* RESYNC? */ 5770 /* TODO: use udf_resync_fid_stream */ 5771 return EIO; 5772 } 5773 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5774 5775 /* we got a whole and valid descriptor! */ 5776 DPRINTF(FIDS, ("\tinterpret FID\n")); 5777 5778 /* create resulting dirent structure */ 5779 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5780 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 5781 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5782 5783 /* '..' has no name, so provide one */ 5784 if (fid->file_char & UDF_FILE_CHAR_PAR) 5785 strcpy(dirent->d_name, ".."); 5786 5787 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5788 dirent->d_namlen = strlen(dirent->d_name); 5789 dirent->d_reclen = _DIRENT_SIZE(dirent); 5790 5791 /* 5792 * Note that its not worth trying to go for the filetypes now... its 5793 * too expensive too 5794 */ 5795 dirent->d_type = DT_UNKNOWN; 5796 5797 /* initial guess for filetype we can make */ 5798 if (fid->file_char & UDF_FILE_CHAR_DIR) 5799 dirent->d_type = DT_DIR; 5800 5801 /* advance */ 5802 *offset += fid_size; 5803 5804 return error; 5805 } 5806 5807 5808 /* --------------------------------------------------------------------- */ 5809 5810 static void 5811 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5812 int pass, int *ndirty) 5813 { 5814 struct udf_node *udf_node, *n_udf_node; 5815 struct vnode *vp; 5816 int vdirty, error; 5817 int on_type, on_flags, on_vnode; 5818 5819 derailed: 5820 KASSERT(mutex_owned(&mntvnode_lock)); 5821 5822 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 5823 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 5824 for (;udf_node; udf_node = n_udf_node) { 5825 DPRINTF(SYNC, (".")); 5826 5827 udf_node->i_flags &= ~IN_SYNCED; 5828 vp = udf_node->vnode; 5829 5830 mutex_enter(&vp->v_interlock); 5831 n_udf_node = LIST_NEXT(udf_node, sortchain); 5832 if (n_udf_node) 5833 n_udf_node->i_flags |= IN_SYNCED; 5834 5835 /* system nodes are not synced this way */ 5836 if (vp->v_vflag & VV_SYSTEM) { 5837 mutex_exit(&vp->v_interlock); 5838 continue; 5839 } 5840 5841 /* check if its dirty enough to even try */ 5842 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 5843 on_flags = ((udf_node->i_flags & 5844 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 5845 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 5846 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 5847 if (on_type || (on_flags || on_vnode)) { /* XXX */ 5848 /* not dirty (enough?) */ 5849 mutex_exit(&vp->v_interlock); 5850 continue; 5851 } 5852 5853 mutex_exit(&mntvnode_lock); 5854 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 5855 if (error) { 5856 mutex_enter(&mntvnode_lock); 5857 if (error == ENOENT) 5858 goto derailed; 5859 *ndirty += 1; 5860 continue; 5861 } 5862 5863 switch (pass) { 5864 case 1: 5865 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 5866 break; 5867 case 2: 5868 vdirty = vp->v_numoutput; 5869 if (vp->v_tag == VT_UDF) 5870 vdirty += udf_node->outstanding_bufs + 5871 udf_node->outstanding_nodedscr; 5872 if (vdirty == 0) 5873 VOP_FSYNC(vp, cred, 0,0,0); 5874 *ndirty += vdirty; 5875 break; 5876 case 3: 5877 vdirty = vp->v_numoutput; 5878 if (vp->v_tag == VT_UDF) 5879 vdirty += udf_node->outstanding_bufs + 5880 udf_node->outstanding_nodedscr; 5881 *ndirty += vdirty; 5882 break; 5883 } 5884 5885 vput(vp); 5886 mutex_enter(&mntvnode_lock); 5887 } 5888 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 5889 } 5890 5891 5892 void 5893 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 5894 { 5895 int dummy, ndirty; 5896 5897 mutex_enter(&mntvnode_lock); 5898 recount: 5899 dummy = 0; 5900 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5901 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5902 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 5903 5904 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5905 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5906 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 5907 5908 if (waitfor == MNT_WAIT) { 5909 ndirty = ump->devvp->v_numoutput; 5910 DPRINTF(SYNC, ("counting pending blocks: on devvp %d\n", 5911 ndirty)); 5912 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 5913 DPRINTF(SYNC, ("counted num dirty pending blocks %d\n", 5914 ndirty)); 5915 5916 if (ndirty) { 5917 /* 1/4 second wait */ 5918 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 5919 hz/4); 5920 goto recount; 5921 } 5922 } 5923 5924 mutex_exit(&mntvnode_lock); 5925 } 5926 5927 /* --------------------------------------------------------------------- */ 5928 5929 /* 5930 * Read and write file extent in/from the buffer. 5931 * 5932 * The splitup of the extent into seperate request-buffers is to minimise 5933 * copying around as much as possible. 5934 * 5935 * block based file reading and writing 5936 */ 5937 5938 static int 5939 udf_read_internal(struct udf_node *node, uint8_t *blob) 5940 { 5941 struct udf_mount *ump; 5942 struct file_entry *fe = node->fe; 5943 struct extfile_entry *efe = node->efe; 5944 uint64_t inflen; 5945 uint32_t sector_size; 5946 uint8_t *pos; 5947 int icbflags, addr_type; 5948 5949 /* get extent and do some paranoia checks */ 5950 ump = node->ump; 5951 sector_size = ump->discinfo.sector_size; 5952 5953 if (fe) { 5954 inflen = udf_rw64(fe->inf_len); 5955 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5956 icbflags = udf_rw16(fe->icbtag.flags); 5957 } else { 5958 assert(node->efe); 5959 inflen = udf_rw64(efe->inf_len); 5960 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5961 icbflags = udf_rw16(efe->icbtag.flags); 5962 } 5963 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5964 5965 assert(addr_type == UDF_ICB_INTERN_ALLOC); 5966 assert(inflen < sector_size); 5967 5968 /* copy out info */ 5969 memset(blob, 0, sector_size); 5970 memcpy(blob, pos, inflen); 5971 5972 return 0; 5973 } 5974 5975 5976 static int 5977 udf_write_internal(struct udf_node *node, uint8_t *blob) 5978 { 5979 struct udf_mount *ump; 5980 struct file_entry *fe = node->fe; 5981 struct extfile_entry *efe = node->efe; 5982 uint64_t inflen; 5983 uint32_t sector_size; 5984 uint8_t *pos; 5985 int icbflags, addr_type; 5986 5987 /* get extent and do some paranoia checks */ 5988 ump = node->ump; 5989 sector_size = ump->discinfo.sector_size; 5990 5991 if (fe) { 5992 inflen = udf_rw64(fe->inf_len); 5993 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5994 icbflags = udf_rw16(fe->icbtag.flags); 5995 } else { 5996 assert(node->efe); 5997 inflen = udf_rw64(efe->inf_len); 5998 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5999 icbflags = udf_rw16(efe->icbtag.flags); 6000 } 6001 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6002 6003 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6004 assert(inflen < sector_size); 6005 6006 /* copy in blob */ 6007 /* memset(pos, 0, inflen); */ 6008 memcpy(pos, blob, inflen); 6009 6010 return 0; 6011 } 6012 6013 6014 void 6015 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6016 { 6017 struct buf *nestbuf; 6018 struct udf_mount *ump = udf_node->ump; 6019 uint64_t *mapping; 6020 uint64_t run_start; 6021 uint32_t sector_size; 6022 uint32_t buf_offset, sector, rbuflen, rblk; 6023 uint32_t from, lblkno; 6024 uint32_t sectors; 6025 uint8_t *buf_pos; 6026 int error, run_length, isdir, what; 6027 6028 sector_size = udf_node->ump->discinfo.sector_size; 6029 6030 from = buf->b_blkno; 6031 sectors = buf->b_bcount / sector_size; 6032 6033 isdir = (udf_node->vnode->v_type == VDIR); 6034 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6035 6036 /* assure we have enough translation slots */ 6037 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6038 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6039 6040 if (sectors > UDF_MAX_MAPPINGS) { 6041 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6042 buf->b_error = EIO; 6043 biodone(buf); 6044 return; 6045 } 6046 6047 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6048 6049 error = 0; 6050 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6051 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6052 if (error) { 6053 buf->b_error = error; 6054 biodone(buf); 6055 goto out; 6056 } 6057 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6058 6059 /* pre-check if its an internal */ 6060 if (*mapping == UDF_TRANS_INTERN) { 6061 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6062 if (error) 6063 buf->b_error = error; 6064 biodone(buf); 6065 goto out; 6066 } 6067 DPRINTF(READ, ("\tnot intern\n")); 6068 6069 #ifdef DEBUG 6070 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6071 printf("Returned translation table:\n"); 6072 for (sector = 0; sector < sectors; sector++) { 6073 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6074 } 6075 } 6076 #endif 6077 6078 /* request read-in of data from disc sheduler */ 6079 buf->b_resid = buf->b_bcount; 6080 for (sector = 0; sector < sectors; sector++) { 6081 buf_offset = sector * sector_size; 6082 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6083 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6084 6085 /* check if its zero or unmapped to stop reading */ 6086 switch (mapping[sector]) { 6087 case UDF_TRANS_UNMAPPED: 6088 case UDF_TRANS_ZERO: 6089 /* copy zero sector TODO runlength like below */ 6090 memset(buf_pos, 0, sector_size); 6091 DPRINTF(READ, ("\treturning zero sector\n")); 6092 nestiobuf_done(buf, sector_size, 0); 6093 break; 6094 default : 6095 DPRINTF(READ, ("\tread sector " 6096 "%"PRIu64"\n", mapping[sector])); 6097 6098 lblkno = from + sector; 6099 run_start = mapping[sector]; 6100 run_length = 1; 6101 while (sector < sectors-1) { 6102 if (mapping[sector+1] != mapping[sector]+1) 6103 break; 6104 run_length++; 6105 sector++; 6106 } 6107 6108 /* 6109 * nest an iobuf and mark it for async reading. Since 6110 * we're using nested buffers, they can't be cached by 6111 * design. 6112 */ 6113 rbuflen = run_length * sector_size; 6114 rblk = run_start * (sector_size/DEV_BSIZE); 6115 6116 nestbuf = getiobuf(NULL, true); 6117 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6118 /* nestbuf is B_ASYNC */ 6119 6120 /* identify this nestbuf */ 6121 nestbuf->b_lblkno = lblkno; 6122 assert(nestbuf->b_vp == udf_node->vnode); 6123 6124 /* CD shedules on raw blkno */ 6125 nestbuf->b_blkno = rblk; 6126 nestbuf->b_proc = NULL; 6127 nestbuf->b_rawblkno = rblk; 6128 nestbuf->b_udf_c_type = what; 6129 6130 udf_discstrat_queuebuf(ump, nestbuf); 6131 } 6132 } 6133 out: 6134 /* if we're synchronously reading, wait for the completion */ 6135 if ((buf->b_flags & B_ASYNC) == 0) 6136 biowait(buf); 6137 6138 DPRINTF(READ, ("\tend of read_filebuf\n")); 6139 free(mapping, M_TEMP); 6140 return; 6141 } 6142 6143 6144 void 6145 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6146 { 6147 struct buf *nestbuf; 6148 struct udf_mount *ump = udf_node->ump; 6149 uint64_t *mapping; 6150 uint64_t run_start; 6151 uint32_t lb_size; 6152 uint32_t buf_offset, lb_num, rbuflen, rblk; 6153 uint32_t from, lblkno; 6154 uint32_t num_lb; 6155 uint8_t *buf_pos; 6156 int error, run_length, isdir, what, s; 6157 6158 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6159 6160 from = buf->b_blkno; 6161 num_lb = buf->b_bcount / lb_size; 6162 6163 isdir = (udf_node->vnode->v_type == VDIR); 6164 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6165 6166 if (udf_node == ump->metadatabitmap_node) 6167 what = UDF_C_METADATA_SBM; 6168 6169 /* assure we have enough translation slots */ 6170 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6171 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6172 6173 if (num_lb > UDF_MAX_MAPPINGS) { 6174 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6175 buf->b_error = EIO; 6176 biodone(buf); 6177 return; 6178 } 6179 6180 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6181 6182 error = 0; 6183 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6184 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6185 if (error) { 6186 buf->b_error = error; 6187 biodone(buf); 6188 goto out; 6189 } 6190 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6191 6192 /* if its internally mapped, we can write it in the descriptor itself */ 6193 if (*mapping == UDF_TRANS_INTERN) { 6194 /* TODO paranoia check if we ARE going to have enough space */ 6195 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6196 if (error) 6197 buf->b_error = error; 6198 biodone(buf); 6199 goto out; 6200 } 6201 DPRINTF(WRITE, ("\tnot intern\n")); 6202 6203 /* request write out of data to disc sheduler */ 6204 buf->b_resid = buf->b_bcount; 6205 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6206 buf_offset = lb_num * lb_size; 6207 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6208 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6209 6210 /* 6211 * Mappings are not that important here. Just before we write 6212 * the lb_num we late-allocate them when needed and update the 6213 * mapping in the udf_node. 6214 */ 6215 6216 /* XXX why not ignore the mapping altogether ? */ 6217 /* TODO estimate here how much will be late-allocated */ 6218 DPRINTF(WRITE, ("\twrite lb_num " 6219 "%"PRIu64, mapping[lb_num])); 6220 6221 lblkno = from + lb_num; 6222 run_start = mapping[lb_num]; 6223 run_length = 1; 6224 while (lb_num < num_lb-1) { 6225 if (mapping[lb_num+1] != mapping[lb_num]+1) 6226 if (mapping[lb_num+1] != mapping[lb_num]) 6227 break; 6228 run_length++; 6229 lb_num++; 6230 } 6231 DPRINTF(WRITE, ("+ %d\n", run_length)); 6232 6233 /* nest an iobuf on the master buffer for the extent */ 6234 rbuflen = run_length * lb_size; 6235 rblk = run_start * (lb_size/DEV_BSIZE); 6236 6237 #if 0 6238 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6239 switch (mapping[lb_num]) { 6240 case UDF_TRANS_UNMAPPED: 6241 case UDF_TRANS_ZERO: 6242 rblk = -1; 6243 break; 6244 default: 6245 rblk = run_start * (lb_size/DEV_BSIZE); 6246 break; 6247 } 6248 #endif 6249 6250 nestbuf = getiobuf(NULL, true); 6251 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6252 /* nestbuf is B_ASYNC */ 6253 6254 /* identify this nestbuf */ 6255 nestbuf->b_lblkno = lblkno; 6256 KASSERT(nestbuf->b_vp == udf_node->vnode); 6257 6258 /* CD shedules on raw blkno */ 6259 nestbuf->b_blkno = rblk; 6260 nestbuf->b_proc = NULL; 6261 nestbuf->b_rawblkno = rblk; 6262 nestbuf->b_udf_c_type = what; 6263 6264 /* increment our outstanding bufs counter */ 6265 s = splbio(); 6266 udf_node->outstanding_bufs++; 6267 splx(s); 6268 6269 udf_discstrat_queuebuf(ump, nestbuf); 6270 } 6271 out: 6272 /* if we're synchronously writing, wait for the completion */ 6273 if ((buf->b_flags & B_ASYNC) == 0) 6274 biowait(buf); 6275 6276 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6277 free(mapping, M_TEMP); 6278 return; 6279 } 6280 6281 /* --------------------------------------------------------------------- */ 6282 6283 6284
Indexes created Fri Sep 26 20:09:58 GMT 2025