udf_subr.c revision 1.75
1 /* $NetBSD: udf_subr.c,v 1.75 2008/11/28 15:29:47 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 1.75 2008/11/28 15:29:47 reinoud Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_quota.h" 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <sys/namei.h> 45 #include <sys/proc.h> 46 #include <sys/kernel.h> 47 #include <sys/vnode.h> 48 #include <miscfs/genfs/genfs_node.h> 49 #include <sys/mount.h> 50 #include <sys/buf.h> 51 #include <sys/file.h> 52 #include <sys/device.h> 53 #include <sys/disklabel.h> 54 #include <sys/ioctl.h> 55 #include <sys/malloc.h> 56 #include <sys/dirent.h> 57 #include <sys/stat.h> 58 #include <sys/conf.h> 59 #include <sys/kauth.h> 60 #include <fs/unicode.h> 61 #include <dev/clock_subr.h> 62 63 #include <fs/udf/ecma167-udf.h> 64 #include <fs/udf/udf_mount.h> 65 #include <sys/dirhash.h> 66 67 #include "udf.h" 68 #include "udf_subr.h" 69 #include "udf_bswap.h" 70 71 72 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 73 74 #define UDF_SET_SYSTEMFILE(vp) \ 75 /* XXXAD Is the vnode locked? */ \ 76 (vp)->v_vflag |= VV_SYSTEM; \ 77 vref(vp); \ 78 vput(vp); \ 79 80 extern int syncer_maxdelay; /* maximum delay time */ 81 extern int (**udf_vnodeop_p)(void *); 82 83 /* --------------------------------------------------------------------- */ 84 85 //#ifdef DEBUG 86 #if 1 87 88 #if 0 89 static void 90 udf_dumpblob(boid *blob, uint32_t dlen) 91 { 92 int i, j; 93 94 printf("blob = %p\n", blob); 95 printf("dump of %d bytes\n", dlen); 96 97 for (i = 0; i < dlen; i+ = 16) { 98 printf("%04x ", i); 99 for (j = 0; j < 16; j++) { 100 if (i+j < dlen) { 101 printf("%02x ", blob[i+j]); 102 } else { 103 printf(" "); 104 } 105 } 106 for (j = 0; j < 16; j++) { 107 if (i+j < dlen) { 108 if (blob[i+j]>32 && blob[i+j]! = 127) { 109 printf("%c", blob[i+j]); 110 } else { 111 printf("."); 112 } 113 } 114 } 115 printf("\n"); 116 } 117 printf("\n"); 118 Debugger(); 119 } 120 #endif 121 122 static void 123 udf_dump_discinfo(struct udf_mount *ump) 124 { 125 char bits[128]; 126 struct mmc_discinfo *di = &ump->discinfo; 127 128 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 129 return; 130 131 printf("Device/media info :\n"); 132 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 133 printf("\tderived class %d\n", di->mmc_class); 134 printf("\tsector size %d\n", di->sector_size); 135 printf("\tdisc state %d\n", di->disc_state); 136 printf("\tlast ses state %d\n", di->last_session_state); 137 printf("\tbg format state %d\n", di->bg_format_state); 138 printf("\tfrst track %d\n", di->first_track); 139 printf("\tfst on last ses %d\n", di->first_track_last_session); 140 printf("\tlst on last ses %d\n", di->last_track_last_session); 141 printf("\tlink block penalty %d\n", di->link_block_penalty); 142 bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 143 sizeof(bits)); 144 printf("\tdisc flags %s\n", bits); 145 printf("\tdisc id %x\n", di->disc_id); 146 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 147 148 printf("\tnum sessions %d\n", di->num_sessions); 149 printf("\tnum tracks %d\n", di->num_tracks); 150 151 bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 152 printf("\tcapabilities cur %s\n", bits); 153 bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 154 printf("\tcapabilities cap %s\n", bits); 155 } 156 #else 157 #define udf_dump_discinfo(a); 158 #endif 159 160 161 /* --------------------------------------------------------------------- */ 162 163 /* not called often */ 164 int 165 udf_update_discinfo(struct udf_mount *ump) 166 { 167 struct vnode *devvp = ump->devvp; 168 struct partinfo dpart; 169 struct mmc_discinfo *di; 170 int error; 171 172 DPRINTF(VOLUMES, ("read/update disc info\n")); 173 di = &ump->discinfo; 174 memset(di, 0, sizeof(struct mmc_discinfo)); 175 176 /* check if we're on a MMC capable device, i.e. CD/DVD */ 177 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 178 if (error == 0) { 179 udf_dump_discinfo(ump); 180 return 0; 181 } 182 183 /* disc partition support */ 184 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 185 if (error) 186 return ENODEV; 187 188 /* set up a disc info profile for partitions */ 189 di->mmc_profile = 0x01; /* disc type */ 190 di->mmc_class = MMC_CLASS_DISC; 191 di->disc_state = MMC_STATE_CLOSED; 192 di->last_session_state = MMC_STATE_CLOSED; 193 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 194 di->link_block_penalty = 0; 195 196 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 197 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 198 di->mmc_cap = di->mmc_cur; 199 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 200 201 /* TODO problem with last_possible_lba on resizable VND; request */ 202 di->last_possible_lba = dpart.part->p_size; 203 di->sector_size = dpart.disklab->d_secsize; 204 205 di->num_sessions = 1; 206 di->num_tracks = 1; 207 208 di->first_track = 1; 209 di->first_track_last_session = di->last_track_last_session = 1; 210 211 udf_dump_discinfo(ump); 212 return 0; 213 } 214 215 216 int 217 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 218 { 219 struct vnode *devvp = ump->devvp; 220 struct mmc_discinfo *di = &ump->discinfo; 221 int error, class; 222 223 DPRINTF(VOLUMES, ("read track info\n")); 224 225 class = di->mmc_class; 226 if (class != MMC_CLASS_DISC) { 227 /* tracknr specified in struct ti */ 228 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 229 return error; 230 } 231 232 /* disc partition support */ 233 if (ti->tracknr != 1) 234 return EIO; 235 236 /* create fake ti (TODO check for resized vnds) */ 237 ti->sessionnr = 1; 238 239 ti->track_mode = 0; /* XXX */ 240 ti->data_mode = 0; /* XXX */ 241 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 242 243 ti->track_start = 0; 244 ti->packet_size = 1; 245 246 /* TODO support for resizable vnd */ 247 ti->track_size = di->last_possible_lba; 248 ti->next_writable = di->last_possible_lba; 249 ti->last_recorded = ti->next_writable; 250 ti->free_blocks = 0; 251 252 return 0; 253 } 254 255 256 int 257 udf_setup_writeparams(struct udf_mount *ump) 258 { 259 struct mmc_writeparams mmc_writeparams; 260 int error; 261 262 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 263 return 0; 264 265 /* 266 * only CD burning normally needs setting up, but other disc types 267 * might need other settings to be made. The MMC framework will set up 268 * the nessisary recording parameters according to the disc 269 * characteristics read in. Modifications can be made in the discinfo 270 * structure passed to change the nature of the disc. 271 */ 272 273 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 274 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 275 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 276 277 /* 278 * UDF dictates first track to determine track mode for the whole 279 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 280 * To prevent problems with a `reserved' track in front we start with 281 * the 2nd track and if that is not valid, go for the 1st. 282 */ 283 mmc_writeparams.tracknr = 2; 284 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 285 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 286 287 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 288 FKIOCTL, NOCRED); 289 if (error) { 290 mmc_writeparams.tracknr = 1; 291 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 292 &mmc_writeparams, FKIOCTL, NOCRED); 293 } 294 return error; 295 } 296 297 298 int 299 udf_synchronise_caches(struct udf_mount *ump) 300 { 301 struct mmc_op mmc_op; 302 303 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 304 305 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 306 return 0; 307 308 /* discs are done now */ 309 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 310 return 0; 311 312 bzero(&mmc_op, sizeof(struct mmc_op)); 313 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 314 315 /* ignore return code */ 316 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 317 318 return 0; 319 } 320 321 /* --------------------------------------------------------------------- */ 322 323 /* track/session searching for mounting */ 324 int 325 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 326 int *first_tracknr, int *last_tracknr) 327 { 328 struct mmc_trackinfo trackinfo; 329 uint32_t tracknr, start_track, num_tracks; 330 int error; 331 332 /* if negative, sessionnr is relative to last session */ 333 if (args->sessionnr < 0) { 334 args->sessionnr += ump->discinfo.num_sessions; 335 } 336 337 /* sanity */ 338 if (args->sessionnr < 0) 339 args->sessionnr = 0; 340 if (args->sessionnr > ump->discinfo.num_sessions) 341 args->sessionnr = ump->discinfo.num_sessions; 342 343 /* search the tracks for this session, zero session nr indicates last */ 344 if (args->sessionnr == 0) 345 args->sessionnr = ump->discinfo.num_sessions; 346 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 347 args->sessionnr--; 348 349 /* sanity again */ 350 if (args->sessionnr < 0) 351 args->sessionnr = 0; 352 353 /* search the first and last track of the specified session */ 354 num_tracks = ump->discinfo.num_tracks; 355 start_track = ump->discinfo.first_track; 356 357 /* search for first track of this session */ 358 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 359 /* get track info */ 360 trackinfo.tracknr = tracknr; 361 error = udf_update_trackinfo(ump, &trackinfo); 362 if (error) 363 return error; 364 365 if (trackinfo.sessionnr == args->sessionnr) 366 break; 367 } 368 *first_tracknr = tracknr; 369 370 /* search for last track of this session */ 371 for (;tracknr <= num_tracks; tracknr++) { 372 /* get track info */ 373 trackinfo.tracknr = tracknr; 374 error = udf_update_trackinfo(ump, &trackinfo); 375 if (error || (trackinfo.sessionnr != args->sessionnr)) { 376 tracknr--; 377 break; 378 } 379 } 380 if (tracknr > num_tracks) 381 tracknr--; 382 383 *last_tracknr = tracknr; 384 385 if (*last_tracknr < *first_tracknr) { 386 printf( "udf_search_tracks: sanity check on drive+disc failed, " 387 "drive returned garbage\n"); 388 return EINVAL; 389 } 390 391 assert(*last_tracknr >= *first_tracknr); 392 return 0; 393 } 394 395 396 /* 397 * NOTE: this is the only routine in this file that directly peeks into the 398 * metadata file but since its at a larval state of the mount it can't hurt. 399 * 400 * XXX candidate for udf_allocation.c 401 * XXX clean me up!, change to new node reading code. 402 */ 403 404 static void 405 udf_check_track_metadata_overlap(struct udf_mount *ump, 406 struct mmc_trackinfo *trackinfo) 407 { 408 struct part_desc *part; 409 struct file_entry *fe; 410 struct extfile_entry *efe; 411 struct short_ad *s_ad; 412 struct long_ad *l_ad; 413 uint32_t track_start, track_end; 414 uint32_t phys_part_start, phys_part_end, part_start, part_end; 415 uint32_t sector_size, len, alloclen, plb_num; 416 uint8_t *pos; 417 int addr_type, icblen, icbflags, flags; 418 419 /* get our track extents */ 420 track_start = trackinfo->track_start; 421 track_end = track_start + trackinfo->track_size; 422 423 /* get our base partition extent */ 424 KASSERT(ump->node_part == ump->fids_part); 425 part = ump->partitions[ump->node_part]; 426 phys_part_start = udf_rw32(part->start_loc); 427 phys_part_end = phys_part_start + udf_rw32(part->part_len); 428 429 /* no use if its outside the physical partition */ 430 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 431 return; 432 433 /* 434 * now follow all extents in the fe/efe to see if they refer to this 435 * track 436 */ 437 438 sector_size = ump->discinfo.sector_size; 439 440 /* XXX should we claim exclusive access to the metafile ? */ 441 /* TODO: move to new node read code */ 442 fe = ump->metadata_node->fe; 443 efe = ump->metadata_node->efe; 444 if (fe) { 445 alloclen = udf_rw32(fe->l_ad); 446 pos = &fe->data[0] + udf_rw32(fe->l_ea); 447 icbflags = udf_rw16(fe->icbtag.flags); 448 } else { 449 assert(efe); 450 alloclen = udf_rw32(efe->l_ad); 451 pos = &efe->data[0] + udf_rw32(efe->l_ea); 452 icbflags = udf_rw16(efe->icbtag.flags); 453 } 454 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 455 456 while (alloclen) { 457 if (addr_type == UDF_ICB_SHORT_ALLOC) { 458 icblen = sizeof(struct short_ad); 459 s_ad = (struct short_ad *) pos; 460 len = udf_rw32(s_ad->len); 461 plb_num = udf_rw32(s_ad->lb_num); 462 } else { 463 /* should not be present, but why not */ 464 icblen = sizeof(struct long_ad); 465 l_ad = (struct long_ad *) pos; 466 len = udf_rw32(l_ad->len); 467 plb_num = udf_rw32(l_ad->loc.lb_num); 468 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 469 } 470 /* process extent */ 471 flags = UDF_EXT_FLAGS(len); 472 len = UDF_EXT_LEN(len); 473 474 part_start = phys_part_start + plb_num; 475 part_end = part_start + (len / sector_size); 476 477 if ((part_start >= track_start) && (part_end <= track_end)) { 478 /* extent is enclosed within this track */ 479 ump->metadata_track = *trackinfo; 480 return; 481 } 482 483 pos += icblen; 484 alloclen -= icblen; 485 } 486 } 487 488 489 int 490 udf_search_writing_tracks(struct udf_mount *ump) 491 { 492 struct mmc_trackinfo trackinfo; 493 struct part_desc *part; 494 uint32_t tracknr, start_track, num_tracks; 495 uint32_t track_start, track_end, part_start, part_end; 496 int node_alloc, error; 497 498 /* 499 * in the CD/(HD)DVD/BD recordable device model a few tracks within 500 * the last session might be open but in the UDF device model at most 501 * three tracks can be open: a reserved track for delayed ISO VRS 502 * writing, a data track and a metadata track. We search here for the 503 * data track and the metadata track. Note that the reserved track is 504 * troublesome but can be detected by its small size of < 512 sectors. 505 */ 506 507 num_tracks = ump->discinfo.num_tracks; 508 start_track = ump->discinfo.first_track; 509 510 /* fetch info on first and possibly only track */ 511 trackinfo.tracknr = start_track; 512 error = udf_update_trackinfo(ump, &trackinfo); 513 if (error) 514 return error; 515 516 /* copy results to our mount point */ 517 ump->data_track = trackinfo; 518 ump->metadata_track = trackinfo; 519 520 /* if not sequential, we're done */ 521 if (num_tracks == 1) 522 return 0; 523 524 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 525 /* get track info */ 526 trackinfo.tracknr = tracknr; 527 error = udf_update_trackinfo(ump, &trackinfo); 528 if (error) 529 return error; 530 531 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 532 continue; 533 534 track_start = trackinfo.track_start; 535 track_end = track_start + trackinfo.track_size; 536 537 /* check for overlap on data partition */ 538 part = ump->partitions[ump->data_part]; 539 part_start = udf_rw32(part->start_loc); 540 part_end = part_start + udf_rw32(part->part_len); 541 if ((part_start < track_end) && (part_end > track_start)) { 542 ump->data_track = trackinfo; 543 /* TODO check if UDF partition data_part is writable */ 544 } 545 546 /* check for overlap on metadata partition */ 547 node_alloc = ump->vtop_alloc[ump->node_part]; 548 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 549 (node_alloc == UDF_ALLOC_METABITMAP)) { 550 udf_check_track_metadata_overlap(ump, &trackinfo); 551 } else { 552 ump->metadata_track = trackinfo; 553 } 554 } 555 556 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 557 return EROFS; 558 559 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 560 return EROFS; 561 562 return 0; 563 } 564 565 /* --------------------------------------------------------------------- */ 566 567 /* 568 * Check if the blob starts with a good UDF tag. Tags are protected by a 569 * checksum over the reader except one byte at position 4 that is the checksum 570 * itself. 571 */ 572 573 int 574 udf_check_tag(void *blob) 575 { 576 struct desc_tag *tag = blob; 577 uint8_t *pos, sum, cnt; 578 579 /* check TAG header checksum */ 580 pos = (uint8_t *) tag; 581 sum = 0; 582 583 for(cnt = 0; cnt < 16; cnt++) { 584 if (cnt != 4) 585 sum += *pos; 586 pos++; 587 } 588 if (sum != tag->cksum) { 589 /* bad tag header checksum; this is not a valid tag */ 590 return EINVAL; 591 } 592 593 return 0; 594 } 595 596 597 /* 598 * check tag payload will check descriptor CRC as specified. 599 * If the descriptor is too long, it will return EIO otherwise EINVAL. 600 */ 601 602 int 603 udf_check_tag_payload(void *blob, uint32_t max_length) 604 { 605 struct desc_tag *tag = blob; 606 uint16_t crc, crc_len; 607 608 crc_len = udf_rw16(tag->desc_crc_len); 609 610 /* check payload CRC if applicable */ 611 if (crc_len == 0) 612 return 0; 613 614 if (crc_len > max_length) 615 return EIO; 616 617 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 618 if (crc != udf_rw16(tag->desc_crc)) { 619 /* bad payload CRC; this is a broken tag */ 620 return EINVAL; 621 } 622 623 return 0; 624 } 625 626 627 void 628 udf_validate_tag_sum(void *blob) 629 { 630 struct desc_tag *tag = blob; 631 uint8_t *pos, sum, cnt; 632 633 /* calculate TAG header checksum */ 634 pos = (uint8_t *) tag; 635 sum = 0; 636 637 for(cnt = 0; cnt < 16; cnt++) { 638 if (cnt != 4) sum += *pos; 639 pos++; 640 } 641 tag->cksum = sum; /* 8 bit */ 642 } 643 644 645 /* assumes sector number of descriptor to be saved already present */ 646 void 647 udf_validate_tag_and_crc_sums(void *blob) 648 { 649 struct desc_tag *tag = blob; 650 uint8_t *btag = (uint8_t *) tag; 651 uint16_t crc, crc_len; 652 653 crc_len = udf_rw16(tag->desc_crc_len); 654 655 /* check payload CRC if applicable */ 656 if (crc_len > 0) { 657 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 658 tag->desc_crc = udf_rw16(crc); 659 } 660 661 /* calculate TAG header checksum */ 662 udf_validate_tag_sum(blob); 663 } 664 665 /* --------------------------------------------------------------------- */ 666 667 /* 668 * XXX note the different semantics from udfclient: for FIDs it still rounds 669 * up to sectors. Use udf_fidsize() for a correct length. 670 */ 671 672 int 673 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 674 { 675 uint32_t size, tag_id, num_lb, elmsz; 676 677 tag_id = udf_rw16(dscr->tag.id); 678 679 switch (tag_id) { 680 case TAGID_LOGVOL : 681 size = sizeof(struct logvol_desc) - 1; 682 size += udf_rw32(dscr->lvd.mt_l); 683 break; 684 case TAGID_UNALLOC_SPACE : 685 elmsz = sizeof(struct extent_ad); 686 size = sizeof(struct unalloc_sp_desc) - elmsz; 687 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 688 break; 689 case TAGID_FID : 690 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 691 size = (size + 3) & ~3; 692 break; 693 case TAGID_LOGVOL_INTEGRITY : 694 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 695 size += udf_rw32(dscr->lvid.l_iu); 696 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 697 break; 698 case TAGID_SPACE_BITMAP : 699 size = sizeof(struct space_bitmap_desc) - 1; 700 size += udf_rw32(dscr->sbd.num_bytes); 701 break; 702 case TAGID_SPARING_TABLE : 703 elmsz = sizeof(struct spare_map_entry); 704 size = sizeof(struct udf_sparing_table) - elmsz; 705 size += udf_rw16(dscr->spt.rt_l) * elmsz; 706 break; 707 case TAGID_FENTRY : 708 size = sizeof(struct file_entry); 709 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 710 break; 711 case TAGID_EXTFENTRY : 712 size = sizeof(struct extfile_entry); 713 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 714 break; 715 case TAGID_FSD : 716 size = sizeof(struct fileset_desc); 717 break; 718 default : 719 size = sizeof(union dscrptr); 720 break; 721 } 722 723 if ((size == 0) || (lb_size == 0)) 724 return 0; 725 726 if (lb_size == 1) 727 return size; 728 729 /* round up in sectors */ 730 num_lb = (size + lb_size -1) / lb_size; 731 return num_lb * lb_size; 732 } 733 734 735 int 736 udf_fidsize(struct fileid_desc *fid) 737 { 738 uint32_t size; 739 740 if (udf_rw16(fid->tag.id) != TAGID_FID) 741 panic("got udf_fidsize on non FID\n"); 742 743 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 744 size = (size + 3) & ~3; 745 746 return size; 747 } 748 749 /* --------------------------------------------------------------------- */ 750 751 void 752 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 753 { 754 int ret; 755 756 mutex_enter(&udf_node->node_mutex); 757 /* wait until free */ 758 while (udf_node->i_flags & IN_LOCKED) { 759 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 760 /* TODO check if we should return error; abort */ 761 if (ret == EWOULDBLOCK) { 762 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 763 "wanted at %s:%d, previously locked at %s:%d\n", 764 udf_node, fname, lineno, 765 udf_node->lock_fname, udf_node->lock_lineno)); 766 } 767 } 768 /* grab */ 769 udf_node->i_flags |= IN_LOCKED | flag; 770 /* debug */ 771 udf_node->lock_fname = fname; 772 udf_node->lock_lineno = lineno; 773 774 mutex_exit(&udf_node->node_mutex); 775 } 776 777 778 void 779 udf_unlock_node(struct udf_node *udf_node, int flag) 780 { 781 mutex_enter(&udf_node->node_mutex); 782 udf_node->i_flags &= ~(IN_LOCKED | flag); 783 cv_broadcast(&udf_node->node_lock); 784 mutex_exit(&udf_node->node_mutex); 785 } 786 787 788 /* --------------------------------------------------------------------- */ 789 790 static int 791 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 792 { 793 int error; 794 795 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 796 (union dscrptr **) dst); 797 if (!error) { 798 /* blank terminator blocks are not allowed here */ 799 if (*dst == NULL) 800 return ENOENT; 801 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 802 error = ENOENT; 803 free(*dst, M_UDFVOLD); 804 *dst = NULL; 805 DPRINTF(VOLUMES, ("Not an anchor\n")); 806 } 807 } 808 809 return error; 810 } 811 812 813 int 814 udf_read_anchors(struct udf_mount *ump) 815 { 816 struct udf_args *args = &ump->mount_args; 817 struct mmc_trackinfo first_track; 818 struct mmc_trackinfo second_track; 819 struct mmc_trackinfo last_track; 820 struct anchor_vdp **anchorsp; 821 uint32_t track_start; 822 uint32_t track_end; 823 uint32_t positions[4]; 824 int first_tracknr, last_tracknr; 825 int error, anch, ok, first_anchor; 826 827 /* search the first and last track of the specified session */ 828 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 829 if (!error) { 830 first_track.tracknr = first_tracknr; 831 error = udf_update_trackinfo(ump, &first_track); 832 } 833 if (!error) { 834 last_track.tracknr = last_tracknr; 835 error = udf_update_trackinfo(ump, &last_track); 836 } 837 if ((!error) && (first_tracknr != last_tracknr)) { 838 second_track.tracknr = first_tracknr+1; 839 error = udf_update_trackinfo(ump, &second_track); 840 } 841 if (error) { 842 printf("UDF mount: reading disc geometry failed\n"); 843 return 0; 844 } 845 846 track_start = first_track.track_start; 847 848 /* `end' is not as straitforward as start. */ 849 track_end = last_track.track_start 850 + last_track.track_size - last_track.free_blocks - 1; 851 852 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 853 /* end of track is not straitforward here */ 854 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 855 track_end = last_track.last_recorded; 856 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 857 track_end = last_track.next_writable 858 - ump->discinfo.link_block_penalty; 859 } 860 861 /* its no use reading a blank track */ 862 first_anchor = 0; 863 if (first_track.flags & MMC_TRACKINFO_BLANK) 864 first_anchor = 1; 865 866 /* get our packet size */ 867 ump->packet_size = first_track.packet_size; 868 if (first_track.flags & MMC_TRACKINFO_BLANK) 869 ump->packet_size = second_track.packet_size; 870 871 if (ump->packet_size <= 1) { 872 /* take max, but not bigger than 64 */ 873 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 874 ump->packet_size = MIN(ump->packet_size, 64); 875 } 876 KASSERT(ump->packet_size >= 1); 877 878 /* read anchors start+256, start+512, end-256, end */ 879 positions[0] = track_start+256; 880 positions[1] = track_end-256; 881 positions[2] = track_end; 882 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 883 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 884 885 ok = 0; 886 anchorsp = ump->anchors; 887 for (anch = first_anchor; anch < 4; anch++) { 888 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 889 positions[anch])); 890 error = udf_read_anchor(ump, positions[anch], anchorsp); 891 if (!error) { 892 anchorsp++; 893 ok++; 894 } 895 } 896 897 /* VATs are only recorded on sequential media, but initialise */ 898 ump->first_possible_vat_location = track_start + 2; 899 ump->last_possible_vat_location = track_end + last_track.packet_size; 900 901 return ok; 902 } 903 904 /* --------------------------------------------------------------------- */ 905 906 /* we dont try to be smart; we just record the parts */ 907 #define UDF_UPDATE_DSCR(name, dscr) \ 908 if (name) \ 909 free(name, M_UDFVOLD); \ 910 name = dscr; 911 912 static int 913 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 914 { 915 struct part_desc *part; 916 uint16_t phys_part, raw_phys_part; 917 918 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 919 udf_rw16(dscr->tag.id))); 920 switch (udf_rw16(dscr->tag.id)) { 921 case TAGID_PRI_VOL : /* primary partition */ 922 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 923 break; 924 case TAGID_LOGVOL : /* logical volume */ 925 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 926 break; 927 case TAGID_UNALLOC_SPACE : /* unallocated space */ 928 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 929 break; 930 case TAGID_IMP_VOL : /* implementation */ 931 /* XXX do we care about multiple impl. descr ? */ 932 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 933 break; 934 case TAGID_PARTITION : /* physical partition */ 935 /* not much use if its not allocated */ 936 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 937 free(dscr, M_UDFVOLD); 938 break; 939 } 940 941 /* 942 * BUGALERT: some rogue implementations use random physical 943 * partion numbers to break other implementations so lookup 944 * the number. 945 */ 946 raw_phys_part = udf_rw16(dscr->pd.part_num); 947 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 948 part = ump->partitions[phys_part]; 949 if (part == NULL) 950 break; 951 if (udf_rw16(part->part_num) == raw_phys_part) 952 break; 953 } 954 if (phys_part == UDF_PARTITIONS) { 955 free(dscr, M_UDFVOLD); 956 return EINVAL; 957 } 958 959 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 960 break; 961 case TAGID_VOL : /* volume space extender; rare */ 962 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 963 free(dscr, M_UDFVOLD); 964 break; 965 default : 966 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 967 udf_rw16(dscr->tag.id))); 968 free(dscr, M_UDFVOLD); 969 } 970 971 return 0; 972 } 973 #undef UDF_UPDATE_DSCR 974 975 /* --------------------------------------------------------------------- */ 976 977 static int 978 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 979 { 980 union dscrptr *dscr; 981 uint32_t sector_size, dscr_size; 982 int error; 983 984 sector_size = ump->discinfo.sector_size; 985 986 /* loc is sectornr, len is in bytes */ 987 error = EIO; 988 while (len) { 989 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 990 if (error) 991 return error; 992 993 /* blank block is a terminator */ 994 if (dscr == NULL) 995 return 0; 996 997 /* TERM descriptor is a terminator */ 998 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 999 free(dscr, M_UDFVOLD); 1000 return 0; 1001 } 1002 1003 /* process all others */ 1004 dscr_size = udf_tagsize(dscr, sector_size); 1005 error = udf_process_vds_descriptor(ump, dscr); 1006 if (error) { 1007 free(dscr, M_UDFVOLD); 1008 break; 1009 } 1010 assert((dscr_size % sector_size) == 0); 1011 1012 len -= dscr_size; 1013 loc += dscr_size / sector_size; 1014 } 1015 1016 return error; 1017 } 1018 1019 1020 int 1021 udf_read_vds_space(struct udf_mount *ump) 1022 { 1023 /* struct udf_args *args = &ump->mount_args; */ 1024 struct anchor_vdp *anchor, *anchor2; 1025 size_t size; 1026 uint32_t main_loc, main_len; 1027 uint32_t reserve_loc, reserve_len; 1028 int error; 1029 1030 /* 1031 * read in VDS space provided by the anchors; if one descriptor read 1032 * fails, try the mirror sector. 1033 * 1034 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1035 * avoids the `compatibility features' of DirectCD that may confuse 1036 * stuff completely. 1037 */ 1038 1039 anchor = ump->anchors[0]; 1040 anchor2 = ump->anchors[1]; 1041 assert(anchor); 1042 1043 if (anchor2) { 1044 size = sizeof(struct extent_ad); 1045 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1046 anchor = anchor2; 1047 /* reserve is specified to be a literal copy of main */ 1048 } 1049 1050 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1051 main_len = udf_rw32(anchor->main_vds_ex.len); 1052 1053 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1054 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1055 1056 error = udf_read_vds_extent(ump, main_loc, main_len); 1057 if (error) { 1058 printf("UDF mount: reading in reserve VDS extent\n"); 1059 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1060 } 1061 1062 return error; 1063 } 1064 1065 /* --------------------------------------------------------------------- */ 1066 1067 /* 1068 * Read in the logical volume integrity sequence pointed to by our logical 1069 * volume descriptor. Its a sequence that can be extended using fields in the 1070 * integrity descriptor itself. On sequential media only one is found, on 1071 * rewritable media a sequence of descriptors can be found as a form of 1072 * history keeping and on non sequential write-once media the chain is vital 1073 * to allow more and more descriptors to be written. The last descriptor 1074 * written in an extent needs to claim space for a new extent. 1075 */ 1076 1077 static int 1078 udf_retrieve_lvint(struct udf_mount *ump) 1079 { 1080 union dscrptr *dscr; 1081 struct logvol_int_desc *lvint; 1082 struct udf_lvintq *trace; 1083 uint32_t lb_size, lbnum, len; 1084 int dscr_type, error, trace_len; 1085 1086 lb_size = udf_rw32(ump->logical_vol->lb_size); 1087 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1088 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1089 1090 /* clean trace */ 1091 memset(ump->lvint_trace, 0, 1092 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1093 1094 trace_len = 0; 1095 trace = ump->lvint_trace; 1096 trace->start = lbnum; 1097 trace->end = lbnum + len/lb_size; 1098 trace->pos = 0; 1099 trace->wpos = 0; 1100 1101 lvint = NULL; 1102 dscr = NULL; 1103 error = 0; 1104 while (len) { 1105 trace->pos = lbnum - trace->start; 1106 trace->wpos = trace->pos + 1; 1107 1108 /* read in our integrity descriptor */ 1109 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1110 if (!error) { 1111 if (dscr == NULL) { 1112 trace->wpos = trace->pos; 1113 break; /* empty terminates */ 1114 } 1115 dscr_type = udf_rw16(dscr->tag.id); 1116 if (dscr_type == TAGID_TERM) { 1117 trace->wpos = trace->pos; 1118 break; /* clean terminator */ 1119 } 1120 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1121 /* fatal... corrupt disc */ 1122 error = ENOENT; 1123 break; 1124 } 1125 if (lvint) 1126 free(lvint, M_UDFVOLD); 1127 lvint = &dscr->lvid; 1128 dscr = NULL; 1129 } /* else hope for the best... maybe the next is ok */ 1130 1131 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1132 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1133 1134 /* proceed sequential */ 1135 lbnum += 1; 1136 len -= lb_size; 1137 1138 /* are we linking to a new piece? */ 1139 if (dscr && lvint->next_extent.len) { 1140 len = udf_rw32(lvint->next_extent.len); 1141 lbnum = udf_rw32(lvint->next_extent.loc); 1142 1143 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1144 /* IEK! segment link full... */ 1145 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1146 error = EINVAL; 1147 } else { 1148 trace++; 1149 trace_len++; 1150 1151 trace->start = lbnum; 1152 trace->end = lbnum + len/lb_size; 1153 trace->pos = 0; 1154 trace->wpos = 0; 1155 } 1156 } 1157 } 1158 1159 /* clean up the mess, esp. when there is an error */ 1160 if (dscr) 1161 free(dscr, M_UDFVOLD); 1162 1163 if (error && lvint) { 1164 free(lvint, M_UDFVOLD); 1165 lvint = NULL; 1166 } 1167 1168 if (!lvint) 1169 error = ENOENT; 1170 1171 ump->logvol_integrity = lvint; 1172 return error; 1173 } 1174 1175 1176 static int 1177 udf_loose_lvint_history(struct udf_mount *ump) 1178 { 1179 union dscrptr **bufs, *dscr, *last_dscr; 1180 struct udf_lvintq *trace, *in_trace, *out_trace; 1181 struct logvol_int_desc *lvint; 1182 uint32_t in_ext, in_pos, in_len; 1183 uint32_t out_ext, out_wpos, out_len; 1184 uint32_t lb_size, packet_size, lb_num; 1185 uint32_t len, start; 1186 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1187 int losing; 1188 int error; 1189 1190 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1191 1192 lb_size = udf_rw32(ump->logical_vol->lb_size); 1193 packet_size = ump->data_track.packet_size; /* XXX data track */ 1194 1195 /* search smallest extent */ 1196 trace = &ump->lvint_trace[0]; 1197 minext = trace->end - trace->start; 1198 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1199 trace = &ump->lvint_trace[ext]; 1200 extlen = trace->end - trace->start; 1201 if (extlen == 0) 1202 break; 1203 minext = MIN(minext, extlen); 1204 } 1205 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1206 /* no sense wiping all */ 1207 if (losing == minext) 1208 losing--; 1209 1210 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1211 1212 /* get buffer for pieces */ 1213 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1214 1215 in_ext = 0; 1216 in_pos = losing; 1217 in_trace = &ump->lvint_trace[in_ext]; 1218 in_len = in_trace->end - in_trace->start; 1219 out_ext = 0; 1220 out_wpos = 0; 1221 out_trace = &ump->lvint_trace[out_ext]; 1222 out_len = out_trace->end - out_trace->start; 1223 1224 last_dscr = NULL; 1225 for(;;) { 1226 out_trace->pos = out_wpos; 1227 out_trace->wpos = out_trace->pos; 1228 if (in_pos >= in_len) { 1229 in_ext++; 1230 in_pos = 0; 1231 in_trace = &ump->lvint_trace[in_ext]; 1232 in_len = in_trace->end - in_trace->start; 1233 } 1234 if (out_wpos >= out_len) { 1235 out_ext++; 1236 out_wpos = 0; 1237 out_trace = &ump->lvint_trace[out_ext]; 1238 out_len = out_trace->end - out_trace->start; 1239 } 1240 /* copy overlap contents */ 1241 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1242 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1243 if (cpy_len == 0) 1244 break; 1245 1246 /* copy */ 1247 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1248 for (cnt = 0; cnt < cpy_len; cnt++) { 1249 /* read in our integrity descriptor */ 1250 lb_num = in_trace->start + in_pos + cnt; 1251 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1252 &dscr); 1253 if (error) { 1254 /* copy last one */ 1255 dscr = last_dscr; 1256 } 1257 bufs[cnt] = dscr; 1258 if (!error) { 1259 if (dscr == NULL) { 1260 out_trace->pos = out_wpos + cnt; 1261 out_trace->wpos = out_trace->pos; 1262 break; /* empty terminates */ 1263 } 1264 dscr_type = udf_rw16(dscr->tag.id); 1265 if (dscr_type == TAGID_TERM) { 1266 out_trace->pos = out_wpos + cnt; 1267 out_trace->wpos = out_trace->pos; 1268 break; /* clean terminator */ 1269 } 1270 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1271 panic( "UDF integrity sequence " 1272 "corrupted while mounted!\n"); 1273 } 1274 last_dscr = dscr; 1275 } 1276 } 1277 1278 /* patch up if first entry was on error */ 1279 if (bufs[0] == NULL) { 1280 for (cnt = 0; cnt < cpy_len; cnt++) 1281 if (bufs[cnt] != NULL) 1282 break; 1283 last_dscr = bufs[cnt]; 1284 for (; cnt > 0; cnt--) { 1285 bufs[cnt] = last_dscr; 1286 } 1287 } 1288 1289 /* glue + write out */ 1290 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1291 for (cnt = 0; cnt < cpy_len; cnt++) { 1292 lb_num = out_trace->start + out_wpos + cnt; 1293 lvint = &bufs[cnt]->lvid; 1294 1295 /* set continuation */ 1296 len = 0; 1297 start = 0; 1298 if (out_wpos + cnt == out_len) { 1299 /* get continuation */ 1300 trace = &ump->lvint_trace[out_ext+1]; 1301 len = trace->end - trace->start; 1302 start = trace->start; 1303 } 1304 lvint->next_extent.len = udf_rw32(len); 1305 lvint->next_extent.loc = udf_rw32(start); 1306 1307 lb_num = trace->start + trace->wpos; 1308 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1309 bufs[cnt], lb_num, lb_num); 1310 DPRINTFIF(VOLUMES, error, 1311 ("error writing lvint lb_num\n")); 1312 } 1313 1314 /* free non repeating descriptors */ 1315 last_dscr = NULL; 1316 for (cnt = 0; cnt < cpy_len; cnt++) { 1317 if (bufs[cnt] != last_dscr) 1318 free(bufs[cnt], M_UDFVOLD); 1319 last_dscr = bufs[cnt]; 1320 } 1321 1322 /* advance */ 1323 in_pos += cpy_len; 1324 out_wpos += cpy_len; 1325 } 1326 1327 free(bufs, M_TEMP); 1328 1329 return 0; 1330 } 1331 1332 1333 static int 1334 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1335 { 1336 struct udf_lvintq *trace; 1337 struct timeval now_v; 1338 struct timespec now_s; 1339 uint32_t sector; 1340 int logvol_integrity; 1341 int space, error; 1342 1343 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1344 1345 again: 1346 /* get free space in last chunk */ 1347 trace = ump->lvint_trace; 1348 while (trace->wpos > (trace->end - trace->start)) { 1349 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1350 "wpos = %d\n", trace->start, trace->end, 1351 trace->pos, trace->wpos)); 1352 trace++; 1353 } 1354 1355 /* check if there is space to append */ 1356 space = (trace->end - trace->start) - trace->wpos; 1357 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1358 "space = %d\n", trace->start, trace->end, trace->pos, 1359 trace->wpos, space)); 1360 1361 /* get state */ 1362 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1363 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1364 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1365 /* don't allow this logvol to be opened */ 1366 /* TODO extent LVINT space if possible */ 1367 return EROFS; 1368 } 1369 } 1370 1371 if (space < 1) { 1372 if (lvflag & UDF_APPENDONLY_LVINT) 1373 return EROFS; 1374 /* loose history by re-writing extents */ 1375 error = udf_loose_lvint_history(ump); 1376 if (error) 1377 return error; 1378 goto again; 1379 } 1380 1381 /* update our integrity descriptor to identify us and timestamp it */ 1382 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1383 microtime(&now_v); 1384 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1385 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1386 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1387 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1388 1389 /* writeout integrity descriptor */ 1390 sector = trace->start + trace->wpos; 1391 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1392 (union dscrptr *) ump->logvol_integrity, 1393 sector, sector); 1394 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1395 if (error) 1396 return error; 1397 1398 /* advance write position */ 1399 trace->wpos++; space--; 1400 if (space >= 1) { 1401 /* append terminator */ 1402 sector = trace->start + trace->wpos; 1403 error = udf_write_terminator(ump, sector); 1404 1405 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1406 } 1407 1408 space = (trace->end - trace->start) - trace->wpos; 1409 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1410 "space = %d\n", trace->start, trace->end, trace->pos, 1411 trace->wpos, space)); 1412 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1413 "successfull\n")); 1414 1415 return error; 1416 } 1417 1418 /* --------------------------------------------------------------------- */ 1419 1420 static int 1421 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1422 { 1423 union dscrptr *dscr; 1424 /* struct udf_args *args = &ump->mount_args; */ 1425 struct part_desc *partd; 1426 struct part_hdr_desc *parthdr; 1427 struct udf_bitmap *bitmap; 1428 uint32_t phys_part; 1429 uint32_t lb_num, len; 1430 int error, dscr_type; 1431 1432 /* unallocated space map */ 1433 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1434 partd = ump->partitions[phys_part]; 1435 if (partd == NULL) 1436 continue; 1437 parthdr = &partd->_impl_use.part_hdr; 1438 1439 lb_num = udf_rw32(partd->start_loc); 1440 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1441 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1442 if (len == 0) 1443 continue; 1444 1445 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1446 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1447 if (!error && dscr) { 1448 /* analyse */ 1449 dscr_type = udf_rw16(dscr->tag.id); 1450 if (dscr_type == TAGID_SPACE_BITMAP) { 1451 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1452 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1453 1454 /* fill in ump->part_unalloc_bits */ 1455 bitmap = &ump->part_unalloc_bits[phys_part]; 1456 bitmap->blob = (uint8_t *) dscr; 1457 bitmap->bits = dscr->sbd.data; 1458 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1459 bitmap->pages = NULL; /* TODO */ 1460 bitmap->data_pos = 0; 1461 bitmap->metadata_pos = 0; 1462 } else { 1463 free(dscr, M_UDFVOLD); 1464 1465 printf( "UDF mount: error reading unallocated " 1466 "space bitmap\n"); 1467 return EROFS; 1468 } 1469 } else { 1470 /* blank not allowed */ 1471 printf("UDF mount: blank unallocated space bitmap\n"); 1472 return EROFS; 1473 } 1474 } 1475 1476 /* unallocated space table (not supported) */ 1477 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1478 partd = ump->partitions[phys_part]; 1479 if (partd == NULL) 1480 continue; 1481 parthdr = &partd->_impl_use.part_hdr; 1482 1483 len = udf_rw32(parthdr->unalloc_space_table.len); 1484 if (len) { 1485 printf("UDF mount: space tables not supported\n"); 1486 return EROFS; 1487 } 1488 } 1489 1490 /* freed space map */ 1491 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1492 partd = ump->partitions[phys_part]; 1493 if (partd == NULL) 1494 continue; 1495 parthdr = &partd->_impl_use.part_hdr; 1496 1497 /* freed space map */ 1498 lb_num = udf_rw32(partd->start_loc); 1499 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1500 len = udf_rw32(parthdr->freed_space_bitmap.len); 1501 if (len == 0) 1502 continue; 1503 1504 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1505 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1506 if (!error && dscr) { 1507 /* analyse */ 1508 dscr_type = udf_rw16(dscr->tag.id); 1509 if (dscr_type == TAGID_SPACE_BITMAP) { 1510 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1511 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1512 1513 /* fill in ump->part_freed_bits */ 1514 bitmap = &ump->part_unalloc_bits[phys_part]; 1515 bitmap->blob = (uint8_t *) dscr; 1516 bitmap->bits = dscr->sbd.data; 1517 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1518 bitmap->pages = NULL; /* TODO */ 1519 bitmap->data_pos = 0; 1520 bitmap->metadata_pos = 0; 1521 } else { 1522 free(dscr, M_UDFVOLD); 1523 1524 printf( "UDF mount: error reading freed " 1525 "space bitmap\n"); 1526 return EROFS; 1527 } 1528 } else { 1529 /* blank not allowed */ 1530 printf("UDF mount: blank freed space bitmap\n"); 1531 return EROFS; 1532 } 1533 } 1534 1535 /* freed space table (not supported) */ 1536 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1537 partd = ump->partitions[phys_part]; 1538 if (partd == NULL) 1539 continue; 1540 parthdr = &partd->_impl_use.part_hdr; 1541 1542 len = udf_rw32(parthdr->freed_space_table.len); 1543 if (len) { 1544 printf("UDF mount: space tables not supported\n"); 1545 return EROFS; 1546 } 1547 } 1548 1549 return 0; 1550 } 1551 1552 1553 /* TODO implement async writeout */ 1554 int 1555 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1556 { 1557 union dscrptr *dscr; 1558 /* struct udf_args *args = &ump->mount_args; */ 1559 struct part_desc *partd; 1560 struct part_hdr_desc *parthdr; 1561 uint32_t phys_part; 1562 uint32_t lb_num, len, ptov; 1563 int error_all, error; 1564 1565 error_all = 0; 1566 /* unallocated space map */ 1567 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1568 partd = ump->partitions[phys_part]; 1569 if (partd == NULL) 1570 continue; 1571 parthdr = &partd->_impl_use.part_hdr; 1572 1573 ptov = udf_rw32(partd->start_loc); 1574 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1575 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1576 if (len == 0) 1577 continue; 1578 1579 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1580 lb_num + ptov)); 1581 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1582 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1583 (union dscrptr *) dscr, 1584 ptov + lb_num, lb_num); 1585 if (error) { 1586 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1587 error_all = error; 1588 } 1589 } 1590 1591 /* freed space map */ 1592 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1593 partd = ump->partitions[phys_part]; 1594 if (partd == NULL) 1595 continue; 1596 parthdr = &partd->_impl_use.part_hdr; 1597 1598 /* freed space map */ 1599 ptov = udf_rw32(partd->start_loc); 1600 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1601 len = udf_rw32(parthdr->freed_space_bitmap.len); 1602 if (len == 0) 1603 continue; 1604 1605 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1606 lb_num + ptov)); 1607 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1608 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1609 (union dscrptr *) dscr, 1610 ptov + lb_num, lb_num); 1611 if (error) { 1612 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1613 error_all = error; 1614 } 1615 } 1616 1617 return error_all; 1618 } 1619 1620 1621 static int 1622 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1623 { 1624 struct udf_node *bitmap_node; 1625 union dscrptr *dscr; 1626 struct udf_bitmap *bitmap; 1627 uint64_t inflen; 1628 int error, dscr_type; 1629 1630 bitmap_node = ump->metadatabitmap_node; 1631 1632 /* only read in when metadata bitmap node is read in */ 1633 if (bitmap_node == NULL) 1634 return 0; 1635 1636 if (bitmap_node->fe) { 1637 inflen = udf_rw64(bitmap_node->fe->inf_len); 1638 } else { 1639 KASSERT(bitmap_node->efe); 1640 inflen = udf_rw64(bitmap_node->efe->inf_len); 1641 } 1642 1643 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1644 "%"PRIu64" bytes\n", inflen)); 1645 1646 /* allocate space for bitmap */ 1647 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1648 if (!dscr) 1649 return ENOMEM; 1650 1651 /* set vnode type to regular file or we can't read from it! */ 1652 bitmap_node->vnode->v_type = VREG; 1653 1654 /* read in complete metadata bitmap file */ 1655 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1656 dscr, 1657 inflen, 0, 1658 UIO_SYSSPACE, 1659 IO_SYNC | IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1660 NULL, NULL); 1661 if (error) { 1662 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1663 goto errorout; 1664 } 1665 1666 /* analyse */ 1667 dscr_type = udf_rw16(dscr->tag.id); 1668 if (dscr_type == TAGID_SPACE_BITMAP) { 1669 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1670 ump->metadata_unalloc_dscr = &dscr->sbd; 1671 1672 /* fill in bitmap bits */ 1673 bitmap = &ump->metadata_unalloc_bits; 1674 bitmap->blob = (uint8_t *) dscr; 1675 bitmap->bits = dscr->sbd.data; 1676 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1677 bitmap->pages = NULL; /* TODO */ 1678 bitmap->data_pos = 0; 1679 bitmap->metadata_pos = 0; 1680 } else { 1681 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1682 goto errorout; 1683 } 1684 1685 return 0; 1686 1687 errorout: 1688 free(dscr, M_UDFVOLD); 1689 printf( "UDF mount: error reading unallocated " 1690 "space bitmap for metadata partition\n"); 1691 return EROFS; 1692 } 1693 1694 1695 int 1696 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1697 { 1698 struct udf_node *bitmap_node; 1699 union dscrptr *dscr; 1700 uint64_t inflen, new_inflen; 1701 int dummy, error; 1702 1703 bitmap_node = ump->metadatabitmap_node; 1704 1705 /* only write out when metadata bitmap node is known */ 1706 if (bitmap_node == NULL) 1707 return 0; 1708 1709 if (bitmap_node->fe) { 1710 inflen = udf_rw64(bitmap_node->fe->inf_len); 1711 } else { 1712 KASSERT(bitmap_node->efe); 1713 inflen = udf_rw64(bitmap_node->efe->inf_len); 1714 } 1715 1716 /* reduce length to zero */ 1717 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1718 new_inflen = udf_tagsize(dscr, 1); 1719 1720 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap from " 1721 "%"PRIu64" to %"PRIu64" bytes\n", inflen, new_inflen)); 1722 1723 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1724 if (error) 1725 printf("Error resizing metadata space bitmap\n"); 1726 1727 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1728 dscr, 1729 new_inflen, 0, 1730 UIO_SYSSPACE, 1731 IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1732 NULL, NULL); 1733 1734 bitmap_node->i_flags |= IN_MODIFIED; 1735 vflushbuf(bitmap_node->vnode, 1 /* sync */); 1736 1737 error = VOP_FSYNC(bitmap_node->vnode, 1738 FSCRED, FSYNC_WAIT, 0, 0); 1739 1740 if (error) 1741 printf( "Error writing out metadata partition unalloced " 1742 "space bitmap!\n"); 1743 1744 return error; 1745 } 1746 1747 1748 /* --------------------------------------------------------------------- */ 1749 1750 /* 1751 * Checks if ump's vds information is correct and complete 1752 */ 1753 1754 int 1755 udf_process_vds(struct udf_mount *ump) { 1756 union udf_pmap *mapping; 1757 /* struct udf_args *args = &ump->mount_args; */ 1758 struct logvol_int_desc *lvint; 1759 struct udf_logvol_info *lvinfo; 1760 struct part_desc *part; 1761 uint32_t n_pm, mt_l; 1762 uint8_t *pmap_pos; 1763 char *domain_name, *map_name; 1764 const char *check_name; 1765 char bits[128]; 1766 int pmap_stype, pmap_size; 1767 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1768 int n_phys, n_virt, n_spar, n_meta; 1769 int len, error; 1770 1771 if (ump == NULL) 1772 return ENOENT; 1773 1774 /* we need at least an anchor (trivial, but for safety) */ 1775 if (ump->anchors[0] == NULL) 1776 return EINVAL; 1777 1778 /* we need at least one primary and one logical volume descriptor */ 1779 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1780 return EINVAL; 1781 1782 /* we need at least one partition descriptor */ 1783 if (ump->partitions[0] == NULL) 1784 return EINVAL; 1785 1786 /* check logical volume sector size verses device sector size */ 1787 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1788 printf("UDF mount: format violation, lb_size != sector size\n"); 1789 return EINVAL; 1790 } 1791 1792 /* check domain name */ 1793 domain_name = ump->logical_vol->domain_id.id; 1794 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1795 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1796 return EINVAL; 1797 } 1798 1799 /* retrieve logical volume integrity sequence */ 1800 error = udf_retrieve_lvint(ump); 1801 1802 /* 1803 * We need at least one logvol integrity descriptor recorded. Note 1804 * that its OK to have an open logical volume integrity here. The VAT 1805 * will close/update the integrity. 1806 */ 1807 if (ump->logvol_integrity == NULL) 1808 return EINVAL; 1809 1810 /* process derived structures */ 1811 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1812 lvint = ump->logvol_integrity; 1813 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1814 ump->logvol_info = lvinfo; 1815 1816 /* TODO check udf versions? */ 1817 1818 /* 1819 * check logvol mappings: effective virt->log partmap translation 1820 * check and recording of the mapping results. Saves expensive 1821 * strncmp() in tight places. 1822 */ 1823 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1824 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1825 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1826 pmap_pos = ump->logical_vol->maps; 1827 1828 if (n_pm > UDF_PMAPS) { 1829 printf("UDF mount: too many mappings\n"); 1830 return EINVAL; 1831 } 1832 1833 /* count types and set partition numbers */ 1834 ump->data_part = ump->node_part = ump->fids_part = 0; 1835 n_phys = n_virt = n_spar = n_meta = 0; 1836 for (log_part = 0; log_part < n_pm; log_part++) { 1837 mapping = (union udf_pmap *) pmap_pos; 1838 pmap_stype = pmap_pos[0]; 1839 pmap_size = pmap_pos[1]; 1840 switch (pmap_stype) { 1841 case 1: /* physical mapping */ 1842 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1843 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1844 pmap_type = UDF_VTOP_TYPE_PHYS; 1845 n_phys++; 1846 ump->data_part = log_part; 1847 ump->node_part = log_part; 1848 ump->fids_part = log_part; 1849 break; 1850 case 2: /* virtual/sparable/meta mapping */ 1851 map_name = mapping->pm2.part_id.id; 1852 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1853 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1854 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1855 len = UDF_REGID_ID_SIZE; 1856 1857 check_name = "*UDF Virtual Partition"; 1858 if (strncmp(map_name, check_name, len) == 0) { 1859 pmap_type = UDF_VTOP_TYPE_VIRT; 1860 n_virt++; 1861 ump->node_part = log_part; 1862 break; 1863 } 1864 check_name = "*UDF Sparable Partition"; 1865 if (strncmp(map_name, check_name, len) == 0) { 1866 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1867 n_spar++; 1868 ump->data_part = log_part; 1869 ump->node_part = log_part; 1870 ump->fids_part = log_part; 1871 break; 1872 } 1873 check_name = "*UDF Metadata Partition"; 1874 if (strncmp(map_name, check_name, len) == 0) { 1875 pmap_type = UDF_VTOP_TYPE_META; 1876 n_meta++; 1877 ump->node_part = log_part; 1878 ump->fids_part = log_part; 1879 break; 1880 } 1881 break; 1882 default: 1883 return EINVAL; 1884 } 1885 1886 /* 1887 * BUGALERT: some rogue implementations use random physical 1888 * partion numbers to break other implementations so lookup 1889 * the number. 1890 */ 1891 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1892 part = ump->partitions[phys_part]; 1893 if (part == NULL) 1894 continue; 1895 if (udf_rw16(part->part_num) == raw_phys_part) 1896 break; 1897 } 1898 1899 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1900 raw_phys_part, phys_part, pmap_type)); 1901 1902 if (phys_part == UDF_PARTITIONS) 1903 return EINVAL; 1904 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1905 return EINVAL; 1906 1907 ump->vtop [log_part] = phys_part; 1908 ump->vtop_tp[log_part] = pmap_type; 1909 1910 pmap_pos += pmap_size; 1911 } 1912 /* not winning the beauty contest */ 1913 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1914 1915 /* test some basic UDF assertions/requirements */ 1916 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1917 return EINVAL; 1918 1919 if (n_virt) { 1920 if ((n_phys == 0) || n_spar || n_meta) 1921 return EINVAL; 1922 } 1923 if (n_spar + n_phys == 0) 1924 return EINVAL; 1925 1926 /* select allocation type for each logical partition */ 1927 for (log_part = 0; log_part < n_pm; log_part++) { 1928 maps_on = ump->vtop[log_part]; 1929 switch (ump->vtop_tp[log_part]) { 1930 case UDF_VTOP_TYPE_PHYS : 1931 assert(maps_on == log_part); 1932 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1933 break; 1934 case UDF_VTOP_TYPE_VIRT : 1935 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 1936 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1937 break; 1938 case UDF_VTOP_TYPE_SPARABLE : 1939 assert(maps_on == log_part); 1940 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1941 break; 1942 case UDF_VTOP_TYPE_META : 1943 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 1944 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1945 /* special case for UDF 2.60 */ 1946 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 1947 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1948 } 1949 break; 1950 default: 1951 panic("bad alloction type in udf's ump->vtop\n"); 1952 } 1953 } 1954 1955 /* determine logical volume open/closure actions */ 1956 if (n_virt) { 1957 ump->lvopen = 0; 1958 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1959 ump->lvopen |= UDF_OPEN_SESSION ; 1960 ump->lvclose = UDF_WRITE_VAT; 1961 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1962 ump->lvclose |= UDF_CLOSE_SESSION; 1963 } else { 1964 /* `normal' rewritable or non sequential media */ 1965 ump->lvopen = UDF_WRITE_LVINT; 1966 ump->lvclose = UDF_WRITE_LVINT; 1967 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1968 ump->lvopen |= UDF_APPENDONLY_LVINT; 1969 } 1970 1971 /* 1972 * Determine sheduler error behaviour. For virtual partions, update 1973 * the trackinfo; for sparable partitions replace a whole block on the 1974 * sparable table. Allways requeue. 1975 */ 1976 ump->lvreadwrite = 0; 1977 if (n_virt) 1978 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1979 if (n_spar) 1980 ump->lvreadwrite = UDF_REMAP_BLOCK; 1981 1982 /* 1983 * Select our sheduler 1984 */ 1985 ump->strategy = &udf_strat_rmw; 1986 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1987 ump->strategy = &udf_strat_sequential; 1988 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1989 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1990 ump->strategy = &udf_strat_direct; 1991 if (n_spar) 1992 ump->strategy = &udf_strat_rmw; 1993 1994 #if 0 1995 /* read-only access won't benefit from the other shedulers */ 1996 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 1997 ump->strategy = &udf_strat_direct; 1998 #endif 1999 2000 /* print results */ 2001 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2002 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2003 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2004 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2005 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2006 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2007 2008 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 2009 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2010 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 2011 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2012 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 2013 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2014 2015 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2016 (ump->strategy == &udf_strat_direct) ? "Direct" : 2017 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2018 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2019 2020 /* signal its OK for now */ 2021 return 0; 2022 } 2023 2024 /* --------------------------------------------------------------------- */ 2025 2026 /* 2027 * Update logical volume name in all structures that keep a record of it. We 2028 * use memmove since each of them might be specified as a source. 2029 * 2030 * Note that it doesn't update the VAT structure! 2031 */ 2032 2033 static void 2034 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2035 { 2036 struct logvol_desc *lvd = NULL; 2037 struct fileset_desc *fsd = NULL; 2038 struct udf_lv_info *lvi = NULL; 2039 2040 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2041 lvd = ump->logical_vol; 2042 fsd = ump->fileset_desc; 2043 if (ump->implementation) 2044 lvi = &ump->implementation->_impl_use.lv_info; 2045 2046 /* logvol's id might be specified as origional so use memmove here */ 2047 memmove(lvd->logvol_id, logvol_id, 128); 2048 if (fsd) 2049 memmove(fsd->logvol_id, logvol_id, 128); 2050 if (lvi) 2051 memmove(lvi->logvol_id, logvol_id, 128); 2052 } 2053 2054 /* --------------------------------------------------------------------- */ 2055 2056 void 2057 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2058 uint32_t sector) 2059 { 2060 assert(ump->logical_vol); 2061 2062 tag->id = udf_rw16(tagid); 2063 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2064 tag->cksum = 0; 2065 tag->reserved = 0; 2066 tag->serial_num = ump->logical_vol->tag.serial_num; 2067 tag->tag_loc = udf_rw32(sector); 2068 } 2069 2070 2071 uint64_t 2072 udf_advance_uniqueid(struct udf_mount *ump) 2073 { 2074 uint64_t unique_id; 2075 2076 mutex_enter(&ump->logvol_mutex); 2077 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2078 if (unique_id < 0x10) 2079 unique_id = 0x10; 2080 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2081 mutex_exit(&ump->logvol_mutex); 2082 2083 return unique_id; 2084 } 2085 2086 2087 static void 2088 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2089 { 2090 struct udf_mount *ump = udf_node->ump; 2091 uint32_t num_dirs, num_files; 2092 int udf_file_type; 2093 2094 /* get file type */ 2095 if (udf_node->fe) { 2096 udf_file_type = udf_node->fe->icbtag.file_type; 2097 } else { 2098 udf_file_type = udf_node->efe->icbtag.file_type; 2099 } 2100 2101 /* adjust file count */ 2102 mutex_enter(&ump->allocate_mutex); 2103 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2104 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2105 ump->logvol_info->num_directories = 2106 udf_rw32((num_dirs + sign)); 2107 } else { 2108 num_files = udf_rw32(ump->logvol_info->num_files); 2109 ump->logvol_info->num_files = 2110 udf_rw32((num_files + sign)); 2111 } 2112 mutex_exit(&ump->allocate_mutex); 2113 } 2114 2115 2116 void 2117 udf_osta_charset(struct charspec *charspec) 2118 { 2119 bzero(charspec, sizeof(struct charspec)); 2120 charspec->type = 0; 2121 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2122 } 2123 2124 2125 /* first call udf_set_regid and then the suffix */ 2126 void 2127 udf_set_regid(struct regid *regid, char const *name) 2128 { 2129 bzero(regid, sizeof(struct regid)); 2130 regid->flags = 0; /* not dirty and not protected */ 2131 strcpy((char *) regid->id, name); 2132 } 2133 2134 2135 void 2136 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2137 { 2138 uint16_t *ver; 2139 2140 ver = (uint16_t *) regid->id_suffix; 2141 *ver = ump->logvol_info->min_udf_readver; 2142 } 2143 2144 2145 void 2146 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2147 { 2148 uint16_t *ver; 2149 2150 ver = (uint16_t *) regid->id_suffix; 2151 *ver = ump->logvol_info->min_udf_readver; 2152 2153 regid->id_suffix[2] = 4; /* unix */ 2154 regid->id_suffix[3] = 8; /* NetBSD */ 2155 } 2156 2157 2158 void 2159 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2160 { 2161 regid->id_suffix[0] = 4; /* unix */ 2162 regid->id_suffix[1] = 8; /* NetBSD */ 2163 } 2164 2165 2166 void 2167 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2168 { 2169 regid->id_suffix[0] = APP_VERSION_MAIN; 2170 regid->id_suffix[1] = APP_VERSION_SUB; 2171 } 2172 2173 static int 2174 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2175 struct long_ad *parent, uint64_t unique_id) 2176 { 2177 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2178 int fidsize = 40; 2179 2180 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2181 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2182 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2183 fid->icb = *parent; 2184 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2185 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2186 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2187 2188 return fidsize; 2189 } 2190 2191 /* --------------------------------------------------------------------- */ 2192 2193 /* 2194 * Extended attribute support. UDF knows of 3 places for extended attributes: 2195 * 2196 * (a) inside the file's (e)fe in the length of the extended attribute area 2197 * before the allocation descriptors/filedata 2198 * 2199 * (b) in a file referenced by (e)fe->ext_attr_icb and 2200 * 2201 * (c) in the e(fe)'s associated stream directory that can hold various 2202 * sub-files. In the stream directory a few fixed named subfiles are reserved 2203 * for NT/Unix ACL's and OS/2 attributes. 2204 * 2205 * NOTE: Extended attributes are read randomly but allways written 2206 * *atomicaly*. For ACL's this interface is propably different but not known 2207 * to me yet. 2208 * 2209 * Order of extended attributes in a space : 2210 * ECMA 167 EAs 2211 * Non block aligned Implementation Use EAs 2212 * Block aligned Implementation Use EAs 2213 * Application Use EAs 2214 */ 2215 2216 static int 2217 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2218 { 2219 uint16_t *spos; 2220 2221 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2222 /* checksum valid? */ 2223 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2224 spos = (uint16_t *) implext->data; 2225 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2226 return EINVAL; 2227 } 2228 return 0; 2229 } 2230 2231 static void 2232 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2233 { 2234 uint16_t *spos; 2235 2236 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2237 /* set checksum */ 2238 spos = (uint16_t *) implext->data; 2239 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2240 } 2241 } 2242 2243 2244 int 2245 udf_extattr_search_intern(struct udf_node *node, 2246 uint32_t sattr, char const *sattrname, 2247 uint32_t *offsetp, uint32_t *lengthp) 2248 { 2249 struct extattrhdr_desc *eahdr; 2250 struct extattr_entry *attrhdr; 2251 struct impl_extattr_entry *implext; 2252 uint32_t offset, a_l, sector_size; 2253 int32_t l_ea; 2254 uint8_t *pos; 2255 int error; 2256 2257 /* get mountpoint */ 2258 sector_size = node->ump->discinfo.sector_size; 2259 2260 /* get information from fe/efe */ 2261 if (node->fe) { 2262 l_ea = udf_rw32(node->fe->l_ea); 2263 eahdr = (struct extattrhdr_desc *) node->fe->data; 2264 } else { 2265 assert(node->efe); 2266 l_ea = udf_rw32(node->efe->l_ea); 2267 eahdr = (struct extattrhdr_desc *) node->efe->data; 2268 } 2269 2270 /* something recorded here? */ 2271 if (l_ea == 0) 2272 return ENOENT; 2273 2274 /* check extended attribute tag; what to do if it fails? */ 2275 error = udf_check_tag(eahdr); 2276 if (error) 2277 return EINVAL; 2278 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2279 return EINVAL; 2280 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2281 if (error) 2282 return EINVAL; 2283 2284 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2285 2286 /* looking for Ecma-167 attributes? */ 2287 offset = sizeof(struct extattrhdr_desc); 2288 2289 /* looking for either implemenation use or application use */ 2290 if (sattr == 2048) { /* [4/48.10.8] */ 2291 offset = udf_rw32(eahdr->impl_attr_loc); 2292 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2293 return ENOENT; 2294 } 2295 if (sattr == 65536) { /* [4/48.10.9] */ 2296 offset = udf_rw32(eahdr->appl_attr_loc); 2297 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2298 return ENOENT; 2299 } 2300 2301 /* paranoia check offset and l_ea */ 2302 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2303 return EINVAL; 2304 2305 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2306 2307 /* find our extended attribute */ 2308 l_ea -= offset; 2309 pos = (uint8_t *) eahdr + offset; 2310 2311 while (l_ea >= sizeof(struct extattr_entry)) { 2312 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2313 attrhdr = (struct extattr_entry *) pos; 2314 implext = (struct impl_extattr_entry *) pos; 2315 2316 /* get complete attribute length and check for roque values */ 2317 a_l = udf_rw32(attrhdr->a_l); 2318 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2319 udf_rw32(attrhdr->type), 2320 attrhdr->subtype, a_l, l_ea)); 2321 if ((a_l == 0) || (a_l > l_ea)) 2322 return EINVAL; 2323 2324 if (attrhdr->type != sattr) 2325 goto next_attribute; 2326 2327 /* we might have found it! */ 2328 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2329 *offsetp = offset; 2330 *lengthp = a_l; 2331 return 0; /* success */ 2332 } 2333 2334 /* 2335 * Implementation use and application use extended attributes 2336 * have a name to identify. They share the same structure only 2337 * UDF implementation use extended attributes have a checksum 2338 * we need to check 2339 */ 2340 2341 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2342 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2343 /* we have found our appl/implementation attribute */ 2344 *offsetp = offset; 2345 *lengthp = a_l; 2346 return 0; /* success */ 2347 } 2348 2349 next_attribute: 2350 /* next attribute */ 2351 pos += a_l; 2352 l_ea -= a_l; 2353 offset += a_l; 2354 } 2355 /* not found */ 2356 return ENOENT; 2357 } 2358 2359 2360 static void 2361 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2362 struct extattr_entry *extattr) 2363 { 2364 struct file_entry *fe; 2365 struct extfile_entry *efe; 2366 struct extattrhdr_desc *extattrhdr; 2367 struct impl_extattr_entry *implext; 2368 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2369 uint32_t *l_eap, l_ad; 2370 uint16_t *spos; 2371 uint8_t *bpos, *data; 2372 2373 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2374 fe = &dscr->fe; 2375 data = fe->data; 2376 l_eap = &fe->l_ea; 2377 l_ad = udf_rw32(fe->l_ad); 2378 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2379 efe = &dscr->efe; 2380 data = efe->data; 2381 l_eap = &efe->l_ea; 2382 l_ad = udf_rw32(efe->l_ad); 2383 } else { 2384 panic("Bad tag passed to udf_extattr_insert_internal"); 2385 } 2386 2387 /* can't append already written to file descriptors yet */ 2388 assert(l_ad == 0); 2389 2390 /* should have a header! */ 2391 extattrhdr = (struct extattrhdr_desc *) data; 2392 l_ea = udf_rw32(*l_eap); 2393 if (l_ea == 0) { 2394 /* create empty extended attribute header */ 2395 exthdr_len = sizeof(struct extattrhdr_desc); 2396 2397 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2398 /* loc */ 0); 2399 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2400 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2401 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2402 2403 /* record extended attribute header length */ 2404 l_ea = exthdr_len; 2405 *l_eap = udf_rw32(l_ea); 2406 } 2407 2408 /* extract locations */ 2409 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2410 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2411 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2412 impl_attr_loc = l_ea; 2413 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2414 appl_attr_loc = l_ea; 2415 2416 /* Ecma 167 EAs */ 2417 if (udf_rw32(extattr->type) < 2048) { 2418 assert(impl_attr_loc == l_ea); 2419 assert(appl_attr_loc == l_ea); 2420 } 2421 2422 /* implementation use extended attributes */ 2423 if (udf_rw32(extattr->type) == 2048) { 2424 assert(appl_attr_loc == l_ea); 2425 2426 /* calculate and write extended attribute header checksum */ 2427 implext = (struct impl_extattr_entry *) extattr; 2428 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2429 spos = (uint16_t *) implext->data; 2430 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2431 } 2432 2433 /* application use extended attributes */ 2434 assert(udf_rw32(extattr->type) != 65536); 2435 assert(appl_attr_loc == l_ea); 2436 2437 /* append the attribute at the end of the current space */ 2438 bpos = data + udf_rw32(*l_eap); 2439 a_l = udf_rw32(extattr->a_l); 2440 2441 /* update impl. attribute locations */ 2442 if (udf_rw32(extattr->type) < 2048) { 2443 impl_attr_loc = l_ea + a_l; 2444 appl_attr_loc = l_ea + a_l; 2445 } 2446 if (udf_rw32(extattr->type) == 2048) { 2447 appl_attr_loc = l_ea + a_l; 2448 } 2449 2450 /* copy and advance */ 2451 memcpy(bpos, extattr, a_l); 2452 l_ea += a_l; 2453 *l_eap = udf_rw32(l_ea); 2454 2455 /* do the `dance` again backwards */ 2456 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2457 if (impl_attr_loc == l_ea) 2458 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2459 if (appl_attr_loc == l_ea) 2460 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2461 } 2462 2463 /* store offsets */ 2464 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2465 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2466 } 2467 2468 2469 /* --------------------------------------------------------------------- */ 2470 2471 static int 2472 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2473 { 2474 struct udf_mount *ump; 2475 struct udf_logvol_info *lvinfo; 2476 struct impl_extattr_entry *implext; 2477 struct vatlvext_extattr_entry lvext; 2478 const char *extstr = "*UDF VAT LVExtension"; 2479 uint64_t vat_uniqueid; 2480 uint32_t offset, a_l; 2481 uint8_t *ea_start, *lvextpos; 2482 int error; 2483 2484 /* get mountpoint and lvinfo */ 2485 ump = vat_node->ump; 2486 lvinfo = ump->logvol_info; 2487 2488 /* get information from fe/efe */ 2489 if (vat_node->fe) { 2490 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2491 ea_start = vat_node->fe->data; 2492 } else { 2493 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2494 ea_start = vat_node->efe->data; 2495 } 2496 2497 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2498 if (error) 2499 return error; 2500 2501 implext = (struct impl_extattr_entry *) (ea_start + offset); 2502 error = udf_impl_extattr_check(implext); 2503 if (error) 2504 return error; 2505 2506 /* paranoia */ 2507 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2508 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2509 return EINVAL; 2510 } 2511 2512 /* 2513 * we have found our "VAT LVExtension attribute. BUT due to a 2514 * bug in the specification it might not be word aligned so 2515 * copy first to avoid panics on some machines (!!) 2516 */ 2517 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2518 lvextpos = implext->data + udf_rw32(implext->iu_l); 2519 memcpy(&lvext, lvextpos, sizeof(lvext)); 2520 2521 /* check if it was updated the last time */ 2522 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2523 lvinfo->num_files = lvext.num_files; 2524 lvinfo->num_directories = lvext.num_directories; 2525 udf_update_logvolname(ump, lvext.logvol_id); 2526 } else { 2527 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2528 /* replace VAT LVExt by free space EA */ 2529 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2530 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2531 udf_calc_impl_extattr_checksum(implext); 2532 } 2533 2534 return 0; 2535 } 2536 2537 2538 static int 2539 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2540 { 2541 struct udf_mount *ump; 2542 struct udf_logvol_info *lvinfo; 2543 struct impl_extattr_entry *implext; 2544 struct vatlvext_extattr_entry lvext; 2545 const char *extstr = "*UDF VAT LVExtension"; 2546 uint64_t vat_uniqueid; 2547 uint32_t offset, a_l; 2548 uint8_t *ea_start, *lvextpos; 2549 int error; 2550 2551 /* get mountpoint and lvinfo */ 2552 ump = vat_node->ump; 2553 lvinfo = ump->logvol_info; 2554 2555 /* get information from fe/efe */ 2556 if (vat_node->fe) { 2557 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2558 ea_start = vat_node->fe->data; 2559 } else { 2560 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2561 ea_start = vat_node->efe->data; 2562 } 2563 2564 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2565 if (error) 2566 return error; 2567 /* found, it existed */ 2568 2569 /* paranoia */ 2570 implext = (struct impl_extattr_entry *) (ea_start + offset); 2571 error = udf_impl_extattr_check(implext); 2572 if (error) { 2573 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2574 return error; 2575 } 2576 /* it is correct */ 2577 2578 /* 2579 * we have found our "VAT LVExtension attribute. BUT due to a 2580 * bug in the specification it might not be word aligned so 2581 * copy first to avoid panics on some machines (!!) 2582 */ 2583 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2584 lvextpos = implext->data + udf_rw32(implext->iu_l); 2585 2586 lvext.unique_id_chk = vat_uniqueid; 2587 lvext.num_files = lvinfo->num_files; 2588 lvext.num_directories = lvinfo->num_directories; 2589 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2590 2591 memcpy(lvextpos, &lvext, sizeof(lvext)); 2592 2593 return 0; 2594 } 2595 2596 /* --------------------------------------------------------------------- */ 2597 2598 int 2599 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2600 { 2601 struct udf_mount *ump = vat_node->ump; 2602 2603 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2604 return EINVAL; 2605 2606 memcpy(blob, ump->vat_table + offset, size); 2607 return 0; 2608 } 2609 2610 int 2611 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2612 { 2613 struct udf_mount *ump = vat_node->ump; 2614 uint32_t offset_high; 2615 uint8_t *new_vat_table; 2616 2617 /* extent VAT allocation if needed */ 2618 offset_high = offset + size; 2619 if (offset_high >= ump->vat_table_alloc_len) { 2620 /* realloc */ 2621 new_vat_table = realloc(ump->vat_table, 2622 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2623 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2624 if (!new_vat_table) { 2625 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2626 return ENOMEM; 2627 } 2628 ump->vat_table = new_vat_table; 2629 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2630 } 2631 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2632 2633 memcpy(ump->vat_table + offset, blob, size); 2634 return 0; 2635 } 2636 2637 /* --------------------------------------------------------------------- */ 2638 2639 /* TODO support previous VAT location writeout */ 2640 static int 2641 udf_update_vat_descriptor(struct udf_mount *ump) 2642 { 2643 struct udf_node *vat_node = ump->vat_node; 2644 struct udf_logvol_info *lvinfo = ump->logvol_info; 2645 struct icb_tag *icbtag; 2646 struct udf_oldvat_tail *oldvat_tl; 2647 struct udf_vat *vat; 2648 uint64_t unique_id; 2649 uint32_t lb_size; 2650 uint8_t *raw_vat; 2651 int filetype, error; 2652 2653 KASSERT(vat_node); 2654 KASSERT(lvinfo); 2655 lb_size = udf_rw32(ump->logical_vol->lb_size); 2656 2657 /* get our new unique_id */ 2658 unique_id = udf_advance_uniqueid(ump); 2659 2660 /* get information from fe/efe */ 2661 if (vat_node->fe) { 2662 icbtag = &vat_node->fe->icbtag; 2663 vat_node->fe->unique_id = udf_rw64(unique_id); 2664 } else { 2665 icbtag = &vat_node->efe->icbtag; 2666 vat_node->efe->unique_id = udf_rw64(unique_id); 2667 } 2668 2669 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2670 filetype = icbtag->file_type; 2671 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2672 2673 /* allocate piece to process head or tail of VAT file */ 2674 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2675 2676 if (filetype == 0) { 2677 /* 2678 * Update "*UDF VAT LVExtension" extended attribute from the 2679 * lvint if present. 2680 */ 2681 udf_update_vat_extattr_from_lvid(vat_node); 2682 2683 /* setup identifying regid */ 2684 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2685 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2686 2687 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2688 udf_add_udf_regid(ump, &oldvat_tl->id); 2689 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2690 2691 /* write out new tail of virtual allocation table file */ 2692 error = udf_vat_write(vat_node, raw_vat, 2693 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2694 } else { 2695 /* compose the VAT2 header */ 2696 vat = (struct udf_vat *) raw_vat; 2697 memset(vat, 0, sizeof(struct udf_vat)); 2698 2699 vat->header_len = udf_rw16(152); /* as per spec */ 2700 vat->impl_use_len = udf_rw16(0); 2701 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2702 vat->prev_vat = udf_rw32(0xffffffff); 2703 vat->num_files = lvinfo->num_files; 2704 vat->num_directories = lvinfo->num_directories; 2705 vat->min_udf_readver = lvinfo->min_udf_readver; 2706 vat->min_udf_writever = lvinfo->min_udf_writever; 2707 vat->max_udf_writever = lvinfo->max_udf_writever; 2708 2709 error = udf_vat_write(vat_node, raw_vat, 2710 sizeof(struct udf_vat), 0); 2711 } 2712 free(raw_vat, M_TEMP); 2713 2714 return error; /* success! */ 2715 } 2716 2717 2718 int 2719 udf_writeout_vat(struct udf_mount *ump) 2720 { 2721 struct udf_node *vat_node = ump->vat_node; 2722 uint32_t vat_length; 2723 int error; 2724 2725 KASSERT(vat_node); 2726 2727 DPRINTF(CALL, ("udf_writeout_vat\n")); 2728 2729 mutex_enter(&ump->allocate_mutex); 2730 udf_update_vat_descriptor(ump); 2731 2732 /* write out the VAT contents ; TODO intelligent writing */ 2733 vat_length = ump->vat_table_len; 2734 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2735 ump->vat_table, ump->vat_table_len, 0, 2736 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2737 if (error) { 2738 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2739 goto out; 2740 } 2741 2742 mutex_exit(&ump->allocate_mutex); 2743 2744 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2745 error = VOP_FSYNC(ump->vat_node->vnode, 2746 FSCRED, FSYNC_WAIT, 0, 0); 2747 if (error) 2748 printf("udf_writeout_vat: error writing VAT node!\n"); 2749 out: 2750 2751 return error; 2752 } 2753 2754 /* --------------------------------------------------------------------- */ 2755 2756 /* 2757 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2758 * descriptor. If OK, read in complete VAT file. 2759 */ 2760 2761 static int 2762 udf_check_for_vat(struct udf_node *vat_node) 2763 { 2764 struct udf_mount *ump; 2765 struct icb_tag *icbtag; 2766 struct timestamp *mtime; 2767 struct udf_vat *vat; 2768 struct udf_oldvat_tail *oldvat_tl; 2769 struct udf_logvol_info *lvinfo; 2770 uint64_t unique_id; 2771 uint32_t vat_length; 2772 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2773 uint32_t sector_size; 2774 uint32_t *raw_vat; 2775 uint8_t *vat_table; 2776 char *regid_name; 2777 int filetype; 2778 int error; 2779 2780 /* vat_length is really 64 bits though impossible */ 2781 2782 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2783 if (!vat_node) 2784 return ENOENT; 2785 2786 /* get mount info */ 2787 ump = vat_node->ump; 2788 sector_size = udf_rw32(ump->logical_vol->lb_size); 2789 2790 /* check assertions */ 2791 assert(vat_node->fe || vat_node->efe); 2792 assert(ump->logvol_integrity); 2793 2794 /* set vnode type to regular file or we can't read from it! */ 2795 vat_node->vnode->v_type = VREG; 2796 2797 /* get information from fe/efe */ 2798 if (vat_node->fe) { 2799 vat_length = udf_rw64(vat_node->fe->inf_len); 2800 icbtag = &vat_node->fe->icbtag; 2801 mtime = &vat_node->fe->mtime; 2802 unique_id = udf_rw64(vat_node->fe->unique_id); 2803 } else { 2804 vat_length = udf_rw64(vat_node->efe->inf_len); 2805 icbtag = &vat_node->efe->icbtag; 2806 mtime = &vat_node->efe->mtime; 2807 unique_id = udf_rw64(vat_node->efe->unique_id); 2808 } 2809 2810 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2811 filetype = icbtag->file_type; 2812 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2813 return ENOENT; 2814 2815 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2816 2817 vat_table_alloc_len = 2818 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2819 * UDF_VAT_CHUNKSIZE; 2820 2821 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2822 M_CANFAIL | M_WAITOK); 2823 if (vat_table == NULL) { 2824 printf("allocation of %d bytes failed for VAT\n", 2825 vat_table_alloc_len); 2826 return ENOMEM; 2827 } 2828 2829 /* allocate piece to read in head or tail of VAT file */ 2830 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2831 2832 /* 2833 * check contents of the file if its the old 1.50 VAT table format. 2834 * Its notoriously broken and allthough some implementations support an 2835 * extention as defined in the UDF 1.50 errata document, its doubtfull 2836 * to be useable since a lot of implementations don't maintain it. 2837 */ 2838 lvinfo = ump->logvol_info; 2839 2840 if (filetype == 0) { 2841 /* definition */ 2842 vat_offset = 0; 2843 vat_entries = (vat_length-36)/4; 2844 2845 /* read in tail of virtual allocation table file */ 2846 error = vn_rdwr(UIO_READ, vat_node->vnode, 2847 (uint8_t *) raw_vat, 2848 sizeof(struct udf_oldvat_tail), 2849 vat_entries * 4, 2850 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2851 NULL, NULL); 2852 if (error) 2853 goto out; 2854 2855 /* check 1.50 VAT */ 2856 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2857 regid_name = (char *) oldvat_tl->id.id; 2858 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2859 if (error) { 2860 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2861 error = ENOENT; 2862 goto out; 2863 } 2864 2865 /* 2866 * update LVID from "*UDF VAT LVExtension" extended attribute 2867 * if present. 2868 */ 2869 udf_update_lvid_from_vat_extattr(vat_node); 2870 } else { 2871 /* read in head of virtual allocation table file */ 2872 error = vn_rdwr(UIO_READ, vat_node->vnode, 2873 (uint8_t *) raw_vat, 2874 sizeof(struct udf_vat), 0, 2875 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2876 NULL, NULL); 2877 if (error) 2878 goto out; 2879 2880 /* definition */ 2881 vat = (struct udf_vat *) raw_vat; 2882 vat_offset = vat->header_len; 2883 vat_entries = (vat_length - vat_offset)/4; 2884 2885 assert(lvinfo); 2886 lvinfo->num_files = vat->num_files; 2887 lvinfo->num_directories = vat->num_directories; 2888 lvinfo->min_udf_readver = vat->min_udf_readver; 2889 lvinfo->min_udf_writever = vat->min_udf_writever; 2890 lvinfo->max_udf_writever = vat->max_udf_writever; 2891 2892 udf_update_logvolname(ump, vat->logvol_id); 2893 } 2894 2895 /* read in complete VAT file */ 2896 error = vn_rdwr(UIO_READ, vat_node->vnode, 2897 vat_table, 2898 vat_length, 0, 2899 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2900 NULL, NULL); 2901 if (error) 2902 printf("read in of complete VAT file failed (error %d)\n", 2903 error); 2904 if (error) 2905 goto out; 2906 2907 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2908 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2909 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2910 ump->logvol_integrity->time = *mtime; 2911 2912 ump->vat_table_len = vat_length; 2913 ump->vat_table_alloc_len = vat_table_alloc_len; 2914 ump->vat_table = vat_table; 2915 ump->vat_offset = vat_offset; 2916 ump->vat_entries = vat_entries; 2917 ump->vat_last_free_lb = 0; /* start at beginning */ 2918 2919 out: 2920 if (error) { 2921 if (vat_table) 2922 free(vat_table, M_UDFVOLD); 2923 } 2924 free(raw_vat, M_TEMP); 2925 2926 return error; 2927 } 2928 2929 /* --------------------------------------------------------------------- */ 2930 2931 static int 2932 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2933 { 2934 struct udf_node *vat_node; 2935 struct long_ad icb_loc; 2936 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2937 int error; 2938 2939 /* mapping info not needed */ 2940 mapping = mapping; 2941 2942 vat_loc = ump->last_possible_vat_location; 2943 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2944 2945 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2946 vat_loc, early_vat_loc)); 2947 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2948 late_vat_loc = vat_loc + 1024; 2949 2950 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2951 vat_loc, early_vat_loc)); 2952 2953 /* start looking from the end of the range */ 2954 do { 2955 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2956 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2957 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2958 2959 error = udf_get_node(ump, &icb_loc, &vat_node); 2960 if (!error) { 2961 error = udf_check_for_vat(vat_node); 2962 DPRINTFIF(VOLUMES, !error, 2963 ("VAT accepted at %d\n", vat_loc)); 2964 if (!error) 2965 break; 2966 } 2967 if (vat_node) { 2968 vput(vat_node->vnode); 2969 vat_node = NULL; 2970 } 2971 vat_loc--; /* walk backwards */ 2972 } while (vat_loc >= early_vat_loc); 2973 2974 /* keep our VAT node around */ 2975 if (vat_node) { 2976 UDF_SET_SYSTEMFILE(vat_node->vnode); 2977 ump->vat_node = vat_node; 2978 } 2979 2980 return error; 2981 } 2982 2983 /* --------------------------------------------------------------------- */ 2984 2985 static int 2986 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2987 { 2988 union dscrptr *dscr; 2989 struct part_map_spare *pms = &mapping->pms; 2990 uint32_t lb_num; 2991 int spar, error; 2992 2993 /* 2994 * The partition mapping passed on to us specifies the information we 2995 * need to locate and initialise the sparable partition mapping 2996 * information we need. 2997 */ 2998 2999 DPRINTF(VOLUMES, ("Read sparable table\n")); 3000 ump->sparable_packet_size = udf_rw16(pms->packet_len); 3001 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3002 3003 for (spar = 0; spar < pms->n_st; spar++) { 3004 lb_num = pms->st_loc[spar]; 3005 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3006 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3007 if (!error && dscr) { 3008 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3009 if (ump->sparing_table) 3010 free(ump->sparing_table, M_UDFVOLD); 3011 ump->sparing_table = &dscr->spt; 3012 dscr = NULL; 3013 DPRINTF(VOLUMES, 3014 ("Sparing table accepted (%d entries)\n", 3015 udf_rw16(ump->sparing_table->rt_l))); 3016 break; /* we're done */ 3017 } 3018 } 3019 if (dscr) 3020 free(dscr, M_UDFVOLD); 3021 } 3022 3023 if (ump->sparing_table) 3024 return 0; 3025 3026 return ENOENT; 3027 } 3028 3029 /* --------------------------------------------------------------------- */ 3030 3031 static int 3032 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3033 { 3034 struct part_map_meta *pmm = &mapping->pmm; 3035 struct long_ad icb_loc; 3036 struct vnode *vp; 3037 int error; 3038 3039 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3040 icb_loc.loc.part_num = pmm->part_num; 3041 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3042 DPRINTF(VOLUMES, ("Metadata file\n")); 3043 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3044 if (ump->metadata_node) { 3045 vp = ump->metadata_node->vnode; 3046 UDF_SET_SYSTEMFILE(vp); 3047 } 3048 3049 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3050 if (icb_loc.loc.lb_num != -1) { 3051 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3052 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3053 if (ump->metadatamirror_node) { 3054 vp = ump->metadatamirror_node->vnode; 3055 UDF_SET_SYSTEMFILE(vp); 3056 } 3057 } 3058 3059 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3060 if (icb_loc.loc.lb_num != -1) { 3061 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3062 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3063 if (ump->metadatabitmap_node) { 3064 vp = ump->metadatabitmap_node->vnode; 3065 UDF_SET_SYSTEMFILE(vp); 3066 } 3067 } 3068 3069 /* if we're mounting read-only we relax the requirements */ 3070 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3071 error = EFAULT; 3072 if (ump->metadata_node) 3073 error = 0; 3074 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3075 printf( "udf mount: Metadata file not readable, " 3076 "substituting Metadata copy file\n"); 3077 ump->metadata_node = ump->metadatamirror_node; 3078 ump->metadatamirror_node = NULL; 3079 error = 0; 3080 } 3081 } else { 3082 /* mounting read/write */ 3083 /* XXX DISABLED! metadata writing is not working yet XXX */ 3084 if (error) 3085 error = EROFS; 3086 } 3087 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3088 "metadata files\n")); 3089 return error; 3090 } 3091 3092 /* --------------------------------------------------------------------- */ 3093 3094 int 3095 udf_read_vds_tables(struct udf_mount *ump) 3096 { 3097 union udf_pmap *mapping; 3098 /* struct udf_args *args = &ump->mount_args; */ 3099 uint32_t n_pm, mt_l; 3100 uint32_t log_part; 3101 uint8_t *pmap_pos; 3102 int pmap_size; 3103 int error; 3104 3105 /* Iterate (again) over the part mappings for locations */ 3106 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3107 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 3108 pmap_pos = ump->logical_vol->maps; 3109 3110 for (log_part = 0; log_part < n_pm; log_part++) { 3111 mapping = (union udf_pmap *) pmap_pos; 3112 switch (ump->vtop_tp[log_part]) { 3113 case UDF_VTOP_TYPE_PHYS : 3114 /* nothing */ 3115 break; 3116 case UDF_VTOP_TYPE_VIRT : 3117 /* search and load VAT */ 3118 error = udf_search_vat(ump, mapping); 3119 if (error) 3120 return ENOENT; 3121 break; 3122 case UDF_VTOP_TYPE_SPARABLE : 3123 /* load one of the sparable tables */ 3124 error = udf_read_sparables(ump, mapping); 3125 if (error) 3126 return ENOENT; 3127 break; 3128 case UDF_VTOP_TYPE_META : 3129 /* load the associated file descriptors */ 3130 error = udf_read_metadata_nodes(ump, mapping); 3131 if (error) 3132 return ENOENT; 3133 break; 3134 default: 3135 break; 3136 } 3137 pmap_size = pmap_pos[1]; 3138 pmap_pos += pmap_size; 3139 } 3140 3141 /* read in and check unallocated and free space info if writing */ 3142 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3143 error = udf_read_physical_partition_spacetables(ump); 3144 if (error) 3145 return error; 3146 3147 /* also read in metadata partion spacebitmap if defined */ 3148 error = udf_read_metadata_partition_spacetable(ump); 3149 return error; 3150 } 3151 3152 return 0; 3153 } 3154 3155 /* --------------------------------------------------------------------- */ 3156 3157 int 3158 udf_read_rootdirs(struct udf_mount *ump) 3159 { 3160 union dscrptr *dscr; 3161 /* struct udf_args *args = &ump->mount_args; */ 3162 struct udf_node *rootdir_node, *streamdir_node; 3163 struct long_ad fsd_loc, *dir_loc; 3164 uint32_t lb_num, dummy; 3165 uint32_t fsd_len; 3166 int dscr_type; 3167 int error; 3168 3169 /* TODO implement FSD reading in separate function like integrity? */ 3170 /* get fileset descriptor sequence */ 3171 fsd_loc = ump->logical_vol->lv_fsd_loc; 3172 fsd_len = udf_rw32(fsd_loc.len); 3173 3174 dscr = NULL; 3175 error = 0; 3176 while (fsd_len || error) { 3177 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3178 /* translate fsd_loc to lb_num */ 3179 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3180 if (error) 3181 break; 3182 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3183 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3184 /* end markers */ 3185 if (error || (dscr == NULL)) 3186 break; 3187 3188 /* analyse */ 3189 dscr_type = udf_rw16(dscr->tag.id); 3190 if (dscr_type == TAGID_TERM) 3191 break; 3192 if (dscr_type != TAGID_FSD) { 3193 free(dscr, M_UDFVOLD); 3194 return ENOENT; 3195 } 3196 3197 /* 3198 * TODO check for multiple fileset descriptors; its only 3199 * picking the last now. Also check for FSD 3200 * correctness/interpretability 3201 */ 3202 3203 /* update */ 3204 if (ump->fileset_desc) { 3205 free(ump->fileset_desc, M_UDFVOLD); 3206 } 3207 ump->fileset_desc = &dscr->fsd; 3208 dscr = NULL; 3209 3210 /* continue to the next fsd */ 3211 fsd_len -= ump->discinfo.sector_size; 3212 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3213 3214 /* follow up to fsd->next_ex (long_ad) if its not null */ 3215 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3216 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3217 fsd_loc = ump->fileset_desc->next_ex; 3218 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3219 } 3220 } 3221 if (dscr) 3222 free(dscr, M_UDFVOLD); 3223 3224 /* there has to be one */ 3225 if (ump->fileset_desc == NULL) 3226 return ENOENT; 3227 3228 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3229 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3230 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3231 3232 /* 3233 * Now the FSD is known, read in the rootdirectory and if one exists, 3234 * the system stream dir. Some files in the system streamdir are not 3235 * wanted in this implementation since they are not maintained. If 3236 * writing is enabled we'll delete these files if they exist. 3237 */ 3238 3239 rootdir_node = streamdir_node = NULL; 3240 dir_loc = NULL; 3241 3242 /* try to read in the rootdir */ 3243 dir_loc = &ump->fileset_desc->rootdir_icb; 3244 error = udf_get_node(ump, dir_loc, &rootdir_node); 3245 if (error) 3246 return ENOENT; 3247 3248 /* aparently it read in fine */ 3249 3250 /* 3251 * Try the system stream directory; not very likely in the ones we 3252 * test, but for completeness. 3253 */ 3254 dir_loc = &ump->fileset_desc->streamdir_icb; 3255 if (udf_rw32(dir_loc->len)) { 3256 printf("udf_read_rootdirs: streamdir defined "); 3257 error = udf_get_node(ump, dir_loc, &streamdir_node); 3258 if (error) { 3259 printf("but error in streamdir reading\n"); 3260 } else { 3261 printf("but ignored\n"); 3262 /* 3263 * TODO process streamdir `baddies' i.e. files we dont 3264 * want if R/W 3265 */ 3266 } 3267 } 3268 3269 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3270 3271 /* release the vnodes again; they'll be auto-recycled later */ 3272 if (streamdir_node) { 3273 vput(streamdir_node->vnode); 3274 } 3275 if (rootdir_node) { 3276 vput(rootdir_node->vnode); 3277 } 3278 3279 return 0; 3280 } 3281 3282 /* --------------------------------------------------------------------- */ 3283 3284 /* To make absolutely sure we are NOT returning zero, add one :) */ 3285 3286 long 3287 udf_calchash(struct long_ad *icbptr) 3288 { 3289 /* ought to be enough since each mountpoint has its own chain */ 3290 return udf_rw32(icbptr->loc.lb_num) + 1; 3291 } 3292 3293 3294 static struct udf_node * 3295 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3296 { 3297 struct udf_node *node; 3298 struct vnode *vp; 3299 uint32_t hashline; 3300 3301 loop: 3302 mutex_enter(&ump->ihash_lock); 3303 3304 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3305 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3306 assert(node); 3307 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3308 node->loc.loc.part_num == icbptr->loc.part_num) { 3309 vp = node->vnode; 3310 assert(vp); 3311 mutex_enter(&vp->v_interlock); 3312 mutex_exit(&ump->ihash_lock); 3313 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3314 goto loop; 3315 return node; 3316 } 3317 } 3318 mutex_exit(&ump->ihash_lock); 3319 3320 return NULL; 3321 } 3322 3323 3324 static void 3325 udf_sorted_list_insert(struct udf_node *node) 3326 { 3327 struct udf_mount *ump; 3328 struct udf_node *s_node, *last_node; 3329 uint32_t loc, s_loc; 3330 3331 ump = node->ump; 3332 last_node = NULL; /* XXX gcc */ 3333 3334 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3335 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3336 return; 3337 } 3338 3339 /* 3340 * We sort on logical block number here and not on physical block 3341 * number here. Ideally we should go for the physical block nr to get 3342 * better sync performance though this sort will ensure that packets 3343 * won't get spit up unnessisarily. 3344 */ 3345 3346 loc = udf_rw32(node->loc.loc.lb_num); 3347 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3348 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3349 if (s_loc > loc) { 3350 LIST_INSERT_BEFORE(s_node, node, sortchain); 3351 return; 3352 } 3353 last_node = s_node; 3354 } 3355 LIST_INSERT_AFTER(last_node, node, sortchain); 3356 } 3357 3358 3359 static void 3360 udf_register_node(struct udf_node *node) 3361 { 3362 struct udf_mount *ump; 3363 struct udf_node *chk; 3364 uint32_t hashline; 3365 3366 ump = node->ump; 3367 mutex_enter(&ump->ihash_lock); 3368 3369 /* add to our hash table */ 3370 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3371 #ifdef DEBUG 3372 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3373 assert(chk); 3374 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3375 chk->loc.loc.part_num == node->loc.loc.part_num) 3376 panic("Double node entered\n"); 3377 } 3378 #else 3379 chk = NULL; 3380 #endif 3381 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3382 3383 /* add to our sorted list */ 3384 udf_sorted_list_insert(node); 3385 3386 mutex_exit(&ump->ihash_lock); 3387 } 3388 3389 3390 static void 3391 udf_deregister_node(struct udf_node *node) 3392 { 3393 struct udf_mount *ump; 3394 3395 ump = node->ump; 3396 mutex_enter(&ump->ihash_lock); 3397 3398 /* from hash and sorted list */ 3399 LIST_REMOVE(node, hashchain); 3400 LIST_REMOVE(node, sortchain); 3401 3402 mutex_exit(&ump->ihash_lock); 3403 } 3404 3405 /* --------------------------------------------------------------------- */ 3406 3407 int 3408 udf_open_logvol(struct udf_mount *ump) 3409 { 3410 int logvol_integrity; 3411 int error; 3412 3413 /* already/still open? */ 3414 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3415 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3416 return 0; 3417 3418 /* can we open it ? */ 3419 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3420 return EROFS; 3421 3422 /* setup write parameters */ 3423 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3424 if ((error = udf_setup_writeparams(ump)) != 0) 3425 return error; 3426 3427 /* determine data and metadata tracks (most likely same) */ 3428 error = udf_search_writing_tracks(ump); 3429 if (error) { 3430 /* most likely lack of space */ 3431 printf("udf_open_logvol: error searching writing tracks\n"); 3432 return EROFS; 3433 } 3434 3435 /* writeout/update lvint on disc or only in memory */ 3436 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3437 if (ump->lvopen & UDF_OPEN_SESSION) { 3438 /* TODO implement writeout of VRS + VDS */ 3439 printf( "udf_open_logvol:Opening a closed session not yet " 3440 "implemented\n"); 3441 return EROFS; 3442 3443 /* determine data and metadata tracks again */ 3444 error = udf_search_writing_tracks(ump); 3445 } 3446 3447 /* mark it open */ 3448 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3449 3450 /* do we need to write it out? */ 3451 if (ump->lvopen & UDF_WRITE_LVINT) { 3452 error = udf_writeout_lvint(ump, ump->lvopen); 3453 /* if we couldn't write it mark it closed again */ 3454 if (error) { 3455 ump->logvol_integrity->integrity_type = 3456 udf_rw32(UDF_INTEGRITY_CLOSED); 3457 return error; 3458 } 3459 } 3460 3461 return 0; 3462 } 3463 3464 3465 int 3466 udf_close_logvol(struct udf_mount *ump, int mntflags) 3467 { 3468 int logvol_integrity; 3469 int error = 0, error1 = 0, error2 = 0; 3470 int n; 3471 3472 /* already/still closed? */ 3473 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3474 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3475 return 0; 3476 3477 /* writeout/update lvint or write out VAT */ 3478 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3479 if (ump->lvclose & UDF_WRITE_VAT) { 3480 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3481 3482 /* write out the VAT node */ 3483 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3484 udf_writeout_vat(ump); 3485 3486 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3487 for (n = 0; n < 16; n++) { 3488 ump->vat_node->i_flags |= IN_MODIFIED; 3489 error = VOP_FSYNC(ump->vat_node->vnode, 3490 FSCRED, FSYNC_WAIT, 0, 0); 3491 } 3492 if (error) { 3493 printf("udf_close_logvol: writeout of VAT failed\n"); 3494 return error; 3495 } 3496 } 3497 3498 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3499 /* sync writeout metadata spacetable if existing */ 3500 error1 = udf_write_metadata_partition_spacetable(ump, true); 3501 if (error1) 3502 printf( "udf_close_logvol: writeout of metadata space " 3503 "bitmap failed\n"); 3504 3505 /* sync writeout partition spacetables */ 3506 error2 = udf_write_physical_partition_spacetables(ump, true); 3507 if (error2) 3508 printf( "udf_close_logvol: writeout of space tables " 3509 "failed\n"); 3510 3511 if (error1 || error2) 3512 return (error1 | error2); 3513 3514 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3515 } 3516 3517 if (ump->lvclose & UDF_CLOSE_SESSION) { 3518 printf("TODO: Closing a session is not yet implemented\n"); 3519 return EROFS; 3520 ump->lvopen |= UDF_OPEN_SESSION; 3521 } 3522 3523 /* mark it closed */ 3524 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3525 3526 /* do we need to write out the logical volume integrity */ 3527 if (ump->lvclose & UDF_WRITE_LVINT) 3528 error = udf_writeout_lvint(ump, ump->lvopen); 3529 if (error) { 3530 /* HELP now what? mark it open again for now */ 3531 ump->logvol_integrity->integrity_type = 3532 udf_rw32(UDF_INTEGRITY_OPEN); 3533 return error; 3534 } 3535 3536 (void) udf_synchronise_caches(ump); 3537 3538 return 0; 3539 } 3540 3541 /* --------------------------------------------------------------------- */ 3542 3543 /* 3544 * Genfs interfacing 3545 * 3546 * static const struct genfs_ops udf_genfsops = { 3547 * .gop_size = genfs_size, 3548 * size of transfers 3549 * .gop_alloc = udf_gop_alloc, 3550 * allocate len bytes at offset 3551 * .gop_write = genfs_gop_write, 3552 * putpages interface code 3553 * .gop_markupdate = udf_gop_markupdate, 3554 * set update/modify flags etc. 3555 * } 3556 */ 3557 3558 /* 3559 * Genfs interface. These four functions are the only ones defined though not 3560 * documented... great.... 3561 */ 3562 3563 /* 3564 * Callback from genfs to allocate len bytes at offset off; only called when 3565 * filling up gaps in the allocation. 3566 */ 3567 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3568 static int 3569 udf_gop_alloc(struct vnode *vp, off_t off, 3570 off_t len, int flags, kauth_cred_t cred) 3571 { 3572 #if 0 3573 struct udf_node *udf_node = VTOI(vp); 3574 struct udf_mount *ump = udf_node->ump; 3575 uint32_t lb_size, num_lb; 3576 #endif 3577 3578 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3579 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3580 3581 return 0; 3582 } 3583 3584 3585 /* 3586 * callback from genfs to update our flags 3587 */ 3588 static void 3589 udf_gop_markupdate(struct vnode *vp, int flags) 3590 { 3591 struct udf_node *udf_node = VTOI(vp); 3592 u_long mask = 0; 3593 3594 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3595 mask = IN_ACCESS; 3596 } 3597 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3598 if (vp->v_type == VREG) { 3599 mask |= IN_CHANGE | IN_UPDATE; 3600 } else { 3601 mask |= IN_MODIFY; 3602 } 3603 } 3604 if (mask) { 3605 udf_node->i_flags |= mask; 3606 } 3607 } 3608 3609 3610 static const struct genfs_ops udf_genfsops = { 3611 .gop_size = genfs_size, 3612 .gop_alloc = udf_gop_alloc, 3613 .gop_write = genfs_gop_write_rwmap, 3614 .gop_markupdate = udf_gop_markupdate, 3615 }; 3616 3617 3618 /* --------------------------------------------------------------------- */ 3619 3620 int 3621 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3622 { 3623 union dscrptr *dscr; 3624 int error; 3625 3626 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3627 bzero(dscr, ump->discinfo.sector_size); 3628 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3629 3630 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3631 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3632 (void) udf_validate_tag_and_crc_sums(dscr); 3633 3634 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3635 dscr, sector, sector); 3636 3637 free(dscr, M_TEMP); 3638 3639 return error; 3640 } 3641 3642 3643 /* --------------------------------------------------------------------- */ 3644 3645 /* UDF<->unix converters */ 3646 3647 /* --------------------------------------------------------------------- */ 3648 3649 static mode_t 3650 udf_perm_to_unix_mode(uint32_t perm) 3651 { 3652 mode_t mode; 3653 3654 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3655 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3656 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3657 3658 return mode; 3659 } 3660 3661 /* --------------------------------------------------------------------- */ 3662 3663 static uint32_t 3664 unix_mode_to_udf_perm(mode_t mode) 3665 { 3666 uint32_t perm; 3667 3668 perm = ((mode & S_IRWXO) ); 3669 perm |= ((mode & S_IRWXG) << 2); 3670 perm |= ((mode & S_IRWXU) << 4); 3671 perm |= ((mode & S_IWOTH) << 3); 3672 perm |= ((mode & S_IWGRP) << 5); 3673 perm |= ((mode & S_IWUSR) << 7); 3674 3675 return perm; 3676 } 3677 3678 /* --------------------------------------------------------------------- */ 3679 3680 static uint32_t 3681 udf_icb_to_unix_filetype(uint32_t icbftype) 3682 { 3683 switch (icbftype) { 3684 case UDF_ICB_FILETYPE_DIRECTORY : 3685 case UDF_ICB_FILETYPE_STREAMDIR : 3686 return S_IFDIR; 3687 case UDF_ICB_FILETYPE_FIFO : 3688 return S_IFIFO; 3689 case UDF_ICB_FILETYPE_CHARDEVICE : 3690 return S_IFCHR; 3691 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3692 return S_IFBLK; 3693 case UDF_ICB_FILETYPE_RANDOMACCESS : 3694 case UDF_ICB_FILETYPE_REALTIME : 3695 return S_IFREG; 3696 case UDF_ICB_FILETYPE_SYMLINK : 3697 return S_IFLNK; 3698 case UDF_ICB_FILETYPE_SOCKET : 3699 return S_IFSOCK; 3700 } 3701 /* no idea what this is */ 3702 return 0; 3703 } 3704 3705 /* --------------------------------------------------------------------- */ 3706 3707 void 3708 udf_to_unix_name(char *result, int result_len, char *id, int len, 3709 struct charspec *chsp) 3710 { 3711 uint16_t *raw_name, *unix_name; 3712 uint16_t *inchp, ch; 3713 uint8_t *outchp; 3714 const char *osta_id = "OSTA Compressed Unicode"; 3715 int ucode_chars, nice_uchars, is_osta_typ0, nout; 3716 3717 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3718 unix_name = raw_name + 1024; /* split space in half */ 3719 assert(sizeof(char) == sizeof(uint8_t)); 3720 outchp = (uint8_t *) result; 3721 3722 is_osta_typ0 = (chsp->type == 0); 3723 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3724 if (is_osta_typ0) { 3725 /* TODO clean up */ 3726 *raw_name = *unix_name = 0; 3727 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3728 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3729 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3730 /* output UTF8 */ 3731 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3732 ch = *inchp; 3733 nout = wput_utf8(outchp, result_len, ch); 3734 outchp += nout; result_len -= nout; 3735 if (!ch) break; 3736 } 3737 *outchp++ = 0; 3738 } else { 3739 /* assume 8bit char length byte latin-1 */ 3740 assert(*id == 8); 3741 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 3742 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3743 } 3744 free(raw_name, M_UDFTEMP); 3745 } 3746 3747 /* --------------------------------------------------------------------- */ 3748 3749 void 3750 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3751 struct charspec *chsp) 3752 { 3753 uint16_t *raw_name; 3754 uint16_t *outchp; 3755 const char *inchp; 3756 const char *osta_id = "OSTA Compressed Unicode"; 3757 int udf_chars, is_osta_typ0, bits; 3758 size_t cnt; 3759 3760 /* allocate temporary unicode-16 buffer */ 3761 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3762 3763 /* convert utf8 to unicode-16 */ 3764 *raw_name = 0; 3765 inchp = name; 3766 outchp = raw_name; 3767 bits = 8; 3768 for (cnt = name_len, udf_chars = 0; cnt;) { 3769 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 3770 *outchp = wget_utf8(&inchp, &cnt); 3771 if (*outchp > 0xff) 3772 bits=16; 3773 outchp++; 3774 udf_chars++; 3775 } 3776 /* null terminate just in case */ 3777 *outchp++ = 0; 3778 3779 is_osta_typ0 = (chsp->type == 0); 3780 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3781 if (is_osta_typ0) { 3782 udf_chars = udf_CompressUnicode(udf_chars, bits, 3783 (unicode_t *) raw_name, 3784 (byte *) result); 3785 } else { 3786 printf("unix to udf name: no CHSP0 ?\n"); 3787 /* XXX assume 8bit char length byte latin-1 */ 3788 *result++ = 8; udf_chars = 1; 3789 strncpy(result, name + 1, name_len); 3790 udf_chars += name_len; 3791 } 3792 *result_len = udf_chars; 3793 free(raw_name, M_UDFTEMP); 3794 } 3795 3796 /* --------------------------------------------------------------------- */ 3797 3798 void 3799 udf_timestamp_to_timespec(struct udf_mount *ump, 3800 struct timestamp *timestamp, 3801 struct timespec *timespec) 3802 { 3803 struct clock_ymdhms ymdhms; 3804 uint32_t usecs, secs, nsecs; 3805 uint16_t tz; 3806 3807 /* fill in ymdhms structure from timestamp */ 3808 memset(&ymdhms, 0, sizeof(ymdhms)); 3809 ymdhms.dt_year = udf_rw16(timestamp->year); 3810 ymdhms.dt_mon = timestamp->month; 3811 ymdhms.dt_day = timestamp->day; 3812 ymdhms.dt_wday = 0; /* ? */ 3813 ymdhms.dt_hour = timestamp->hour; 3814 ymdhms.dt_min = timestamp->minute; 3815 ymdhms.dt_sec = timestamp->second; 3816 3817 secs = clock_ymdhms_to_secs(&ymdhms); 3818 usecs = timestamp->usec + 3819 100*timestamp->hund_usec + 10000*timestamp->centisec; 3820 nsecs = usecs * 1000; 3821 3822 /* 3823 * Calculate the time zone. The timezone is 12 bit signed 2's 3824 * compliment, so we gotta do some extra magic to handle it right. 3825 */ 3826 tz = udf_rw16(timestamp->type_tz); 3827 tz &= 0x0fff; /* only lower 12 bits are significant */ 3828 if (tz & 0x0800) /* sign extention */ 3829 tz |= 0xf000; 3830 3831 /* TODO check timezone conversion */ 3832 /* check if we are specified a timezone to convert */ 3833 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3834 if ((int16_t) tz != -2047) 3835 secs -= (int16_t) tz * 60; 3836 } else { 3837 secs -= ump->mount_args.gmtoff; 3838 } 3839 3840 timespec->tv_sec = secs; 3841 timespec->tv_nsec = nsecs; 3842 } 3843 3844 3845 void 3846 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3847 { 3848 struct clock_ymdhms ymdhms; 3849 uint32_t husec, usec, csec; 3850 3851 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3852 3853 usec = timespec->tv_nsec / 1000; 3854 husec = usec / 100; 3855 usec -= husec * 100; /* only 0-99 in usec */ 3856 csec = husec / 100; /* only 0-99 in csec */ 3857 husec -= csec * 100; /* only 0-99 in husec */ 3858 3859 /* set method 1 for CUT/GMT */ 3860 timestamp->type_tz = udf_rw16((1<<12) + 0); 3861 timestamp->year = udf_rw16(ymdhms.dt_year); 3862 timestamp->month = ymdhms.dt_mon; 3863 timestamp->day = ymdhms.dt_day; 3864 timestamp->hour = ymdhms.dt_hour; 3865 timestamp->minute = ymdhms.dt_min; 3866 timestamp->second = ymdhms.dt_sec; 3867 timestamp->centisec = csec; 3868 timestamp->hund_usec = husec; 3869 timestamp->usec = usec; 3870 } 3871 3872 /* --------------------------------------------------------------------- */ 3873 3874 /* 3875 * Attribute and filetypes converters with get/set pairs 3876 */ 3877 3878 uint32_t 3879 udf_getaccessmode(struct udf_node *udf_node) 3880 { 3881 struct file_entry *fe = udf_node->fe;; 3882 struct extfile_entry *efe = udf_node->efe; 3883 uint32_t udf_perm, icbftype; 3884 uint32_t mode, ftype; 3885 uint16_t icbflags; 3886 3887 UDF_LOCK_NODE(udf_node, 0); 3888 if (fe) { 3889 udf_perm = udf_rw32(fe->perm); 3890 icbftype = fe->icbtag.file_type; 3891 icbflags = udf_rw16(fe->icbtag.flags); 3892 } else { 3893 assert(udf_node->efe); 3894 udf_perm = udf_rw32(efe->perm); 3895 icbftype = efe->icbtag.file_type; 3896 icbflags = udf_rw16(efe->icbtag.flags); 3897 } 3898 3899 mode = udf_perm_to_unix_mode(udf_perm); 3900 ftype = udf_icb_to_unix_filetype(icbftype); 3901 3902 /* set suid, sgid, sticky from flags in fe/efe */ 3903 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3904 mode |= S_ISUID; 3905 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3906 mode |= S_ISGID; 3907 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3908 mode |= S_ISVTX; 3909 3910 UDF_UNLOCK_NODE(udf_node, 0); 3911 3912 return mode | ftype; 3913 } 3914 3915 3916 void 3917 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3918 { 3919 struct file_entry *fe = udf_node->fe; 3920 struct extfile_entry *efe = udf_node->efe; 3921 uint32_t udf_perm; 3922 uint16_t icbflags; 3923 3924 UDF_LOCK_NODE(udf_node, 0); 3925 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3926 if (fe) { 3927 icbflags = udf_rw16(fe->icbtag.flags); 3928 } else { 3929 icbflags = udf_rw16(efe->icbtag.flags); 3930 } 3931 3932 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3933 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3934 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3935 if (mode & S_ISUID) 3936 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3937 if (mode & S_ISGID) 3938 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3939 if (mode & S_ISVTX) 3940 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3941 3942 if (fe) { 3943 fe->perm = udf_rw32(udf_perm); 3944 fe->icbtag.flags = udf_rw16(icbflags); 3945 } else { 3946 efe->perm = udf_rw32(udf_perm); 3947 efe->icbtag.flags = udf_rw16(icbflags); 3948 } 3949 3950 UDF_UNLOCK_NODE(udf_node, 0); 3951 } 3952 3953 3954 void 3955 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3956 { 3957 struct udf_mount *ump = udf_node->ump; 3958 struct file_entry *fe = udf_node->fe; 3959 struct extfile_entry *efe = udf_node->efe; 3960 uid_t uid; 3961 gid_t gid; 3962 3963 UDF_LOCK_NODE(udf_node, 0); 3964 if (fe) { 3965 uid = (uid_t)udf_rw32(fe->uid); 3966 gid = (gid_t)udf_rw32(fe->gid); 3967 } else { 3968 assert(udf_node->efe); 3969 uid = (uid_t)udf_rw32(efe->uid); 3970 gid = (gid_t)udf_rw32(efe->gid); 3971 } 3972 3973 /* do the uid/gid translation game */ 3974 if ((uid == (uid_t) -1) && (gid == (gid_t) -1)) { 3975 uid = ump->mount_args.anon_uid; 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) && (gid == nobody_gid)) { 4000 uid = (uid_t) -1; 4001 gid = (gid_t) -1; 4002 } 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 /* insert into the hash lookup */ 4807 udf_register_node(udf_node); 4808 4809 /* safe to unlock, the entry is in the hash table, vnode is locked */ 4810 mutex_exit(&ump->get_node_lock); 4811 4812 icb_loc = *node_icb_loc; 4813 needs_indirect = 0; 4814 strat4096 = 0; 4815 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 4816 file_size = 0; 4817 file_data = NULL; 4818 lb_size = udf_rw32(ump->logical_vol->lb_size); 4819 4820 DPRINTF(NODE, ("\tstart reading descriptors\n")); 4821 do { 4822 /* try to read in fe/efe */ 4823 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4824 4825 /* blank sector marks end of sequence, check this */ 4826 if ((dscr == NULL) && (!strat4096)) 4827 error = ENOENT; 4828 4829 /* break if read error or blank sector */ 4830 if (error || (dscr == NULL)) 4831 break; 4832 4833 /* process descriptor based on the descriptor type */ 4834 dscr_type = udf_rw16(dscr->tag.id); 4835 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 4836 4837 /* if dealing with an indirect entry, follow the link */ 4838 if (dscr_type == TAGID_INDIRECTENTRY) { 4839 needs_indirect = 0; 4840 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4841 icb_loc = dscr->inde.indirect_icb; 4842 continue; 4843 } 4844 4845 /* only file entries and extended file entries allowed here */ 4846 if ((dscr_type != TAGID_FENTRY) && 4847 (dscr_type != TAGID_EXTFENTRY)) { 4848 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4849 error = ENOENT; 4850 break; 4851 } 4852 4853 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 4854 4855 /* choose this one */ 4856 last_fe_icb_loc = icb_loc; 4857 4858 /* record and process/update (ext)fentry */ 4859 file_data = NULL; 4860 if (dscr_type == TAGID_FENTRY) { 4861 if (udf_node->fe) 4862 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4863 udf_node->fe); 4864 udf_node->fe = &dscr->fe; 4865 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 4866 udf_file_type = udf_node->fe->icbtag.file_type; 4867 file_size = udf_rw64(udf_node->fe->inf_len); 4868 file_data = udf_node->fe->data; 4869 } else { 4870 if (udf_node->efe) 4871 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4872 udf_node->efe); 4873 udf_node->efe = &dscr->efe; 4874 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 4875 udf_file_type = udf_node->efe->icbtag.file_type; 4876 file_size = udf_rw64(udf_node->efe->inf_len); 4877 file_data = udf_node->efe->data; 4878 } 4879 4880 /* check recording strategy (structure) */ 4881 4882 /* 4883 * Strategy 4096 is a daisy linked chain terminating with an 4884 * unrecorded sector or a TERM descriptor. The next 4885 * descriptor is to be found in the sector that follows the 4886 * current sector. 4887 */ 4888 if (strat == 4096) { 4889 strat4096 = 1; 4890 needs_indirect = 1; 4891 4892 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 4893 } 4894 4895 /* 4896 * Strategy 4 is the normal strategy and terminates, but if 4897 * we're in strategy 4096, we can't have strategy 4 mixed in 4898 */ 4899 4900 if (strat == 4) { 4901 if (strat4096) { 4902 error = EINVAL; 4903 break; 4904 } 4905 break; /* done */ 4906 } 4907 } while (!error); 4908 4909 /* first round of cleanup code */ 4910 if (error) { 4911 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 4912 /* recycle udf_node */ 4913 udf_dispose_node(udf_node); 4914 4915 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4916 nvp->v_data = NULL; 4917 ungetnewvnode(nvp); 4918 4919 return EINVAL; /* error code ok? */ 4920 } 4921 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 4922 4923 /* assert no references to dscr anymore beyong this point */ 4924 assert((udf_node->fe) || (udf_node->efe)); 4925 dscr = NULL; 4926 4927 /* 4928 * Remember where to record an updated version of the descriptor. If 4929 * there is a sequence of indirect entries, icb_loc will have been 4930 * updated. Its the write disipline to allocate new space and to make 4931 * sure the chain is maintained. 4932 * 4933 * `needs_indirect' flags if the next location is to be filled with 4934 * with an indirect entry. 4935 */ 4936 udf_node->write_loc = icb_loc; 4937 udf_node->needs_indirect = needs_indirect; 4938 4939 /* 4940 * Go trough all allocations extents of this descriptor and when 4941 * encountering a redirect read in the allocation extension. These are 4942 * daisy-chained. 4943 */ 4944 UDF_LOCK_NODE(udf_node, 0); 4945 udf_node->num_extensions = 0; 4946 4947 error = 0; 4948 slot = 0; 4949 for (;;) { 4950 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 4951 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 4952 "lb_num = %d, part = %d\n", slot, eof, 4953 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 4954 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 4955 udf_rw32(icb_loc.loc.lb_num), 4956 udf_rw16(icb_loc.loc.part_num))); 4957 if (eof) 4958 break; 4959 slot++; 4960 4961 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 4962 continue; 4963 4964 DPRINTF(NODE, ("\tgot redirect extent\n")); 4965 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 4966 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 4967 "too many allocation extensions on " 4968 "udf_node\n")); 4969 error = EINVAL; 4970 break; 4971 } 4972 4973 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 4974 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 4975 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 4976 "extension size in udf_node\n")); 4977 error = EINVAL; 4978 break; 4979 } 4980 4981 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 4982 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 4983 /* load in allocation extent */ 4984 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4985 if (error || (dscr == NULL)) 4986 break; 4987 4988 /* process read-in descriptor */ 4989 dscr_type = udf_rw16(dscr->tag.id); 4990 4991 if (dscr_type != TAGID_ALLOCEXTENT) { 4992 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4993 error = ENOENT; 4994 break; 4995 } 4996 4997 DPRINTF(NODE, ("\trecording redirect extent\n")); 4998 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 4999 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5000 5001 udf_node->num_extensions++; 5002 5003 } /* while */ 5004 UDF_UNLOCK_NODE(udf_node, 0); 5005 5006 /* second round of cleanup code */ 5007 if (error) { 5008 /* recycle udf_node */ 5009 udf_dispose_node(udf_node); 5010 5011 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5012 nvp->v_data = NULL; 5013 ungetnewvnode(nvp); 5014 5015 return EINVAL; /* error code ok? */ 5016 } 5017 5018 DPRINTF(NODE, ("\tnode read in fine\n")); 5019 5020 /* 5021 * Translate UDF filetypes into vnode types. 5022 * 5023 * Systemfiles like the meta main and mirror files are not treated as 5024 * normal files, so we type them as having no type. UDF dictates that 5025 * they are not allowed to be visible. 5026 */ 5027 5028 switch (udf_file_type) { 5029 case UDF_ICB_FILETYPE_DIRECTORY : 5030 case UDF_ICB_FILETYPE_STREAMDIR : 5031 nvp->v_type = VDIR; 5032 break; 5033 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5034 nvp->v_type = VBLK; 5035 break; 5036 case UDF_ICB_FILETYPE_CHARDEVICE : 5037 nvp->v_type = VCHR; 5038 break; 5039 case UDF_ICB_FILETYPE_SOCKET : 5040 nvp->v_type = VSOCK; 5041 break; 5042 case UDF_ICB_FILETYPE_FIFO : 5043 nvp->v_type = VFIFO; 5044 break; 5045 case UDF_ICB_FILETYPE_SYMLINK : 5046 nvp->v_type = VLNK; 5047 break; 5048 case UDF_ICB_FILETYPE_VAT : 5049 case UDF_ICB_FILETYPE_META_MAIN : 5050 case UDF_ICB_FILETYPE_META_MIRROR : 5051 nvp->v_type = VNON; 5052 break; 5053 case UDF_ICB_FILETYPE_RANDOMACCESS : 5054 case UDF_ICB_FILETYPE_REALTIME : 5055 nvp->v_type = VREG; 5056 break; 5057 default: 5058 /* YIKES, something else */ 5059 nvp->v_type = VNON; 5060 } 5061 5062 /* TODO specfs, fifofs etc etc. vnops setting */ 5063 5064 /* don't forget to set vnode's v_size */ 5065 uvm_vnp_setsize(nvp, file_size); 5066 5067 /* TODO ext attr and streamdir udf_nodes */ 5068 5069 *udf_noderes = udf_node; 5070 5071 return 0; 5072 } 5073 5074 /* --------------------------------------------------------------------- */ 5075 5076 int 5077 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5078 { 5079 union dscrptr *dscr; 5080 struct long_ad *loc; 5081 int extnr, flags, error; 5082 5083 DPRINTF(NODE, ("udf_writeout_node called\n")); 5084 5085 KASSERT(udf_node->outstanding_bufs == 0); 5086 KASSERT(udf_node->outstanding_nodedscr == 0); 5087 5088 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5089 5090 if (udf_node->i_flags & IN_DELETED) { 5091 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5092 return 0; 5093 } 5094 5095 /* lock node */ 5096 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5097 UDF_LOCK_NODE(udf_node, flags); 5098 5099 /* at least one descriptor writeout */ 5100 udf_node->outstanding_nodedscr = 1; 5101 5102 /* we're going to write out the descriptor so clear the flags */ 5103 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5104 5105 /* if we were rebuild, write out the allocation extents */ 5106 if (udf_node->i_flags & IN_NODE_REBUILD) { 5107 /* mark outstanding node descriptors and issue them */ 5108 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5109 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5110 loc = &udf_node->ext_loc[extnr]; 5111 dscr = (union dscrptr *) udf_node->ext[extnr]; 5112 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5113 if (error) 5114 return error; 5115 } 5116 /* mark allocation extents written out */ 5117 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5118 } 5119 5120 if (udf_node->fe) { 5121 KASSERT(udf_node->efe == NULL); 5122 dscr = (union dscrptr *) udf_node->fe; 5123 } else { 5124 KASSERT(udf_node->efe); 5125 KASSERT(udf_node->fe == NULL); 5126 dscr = (union dscrptr *) udf_node->efe; 5127 } 5128 KASSERT(dscr); 5129 5130 loc = &udf_node->write_loc; 5131 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5132 return error; 5133 } 5134 5135 /* --------------------------------------------------------------------- */ 5136 5137 int 5138 udf_dispose_node(struct udf_node *udf_node) 5139 { 5140 struct vnode *vp; 5141 int extnr; 5142 5143 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5144 if (!udf_node) { 5145 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5146 return 0; 5147 } 5148 5149 vp = udf_node->vnode; 5150 #ifdef DIAGNOSTIC 5151 if (vp->v_numoutput) 5152 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5153 "v_numoutput = %d", udf_node, vp->v_numoutput); 5154 #endif 5155 5156 /* wait until out of sync (just in case we happen to stumble over one */ 5157 KASSERT(!mutex_owned(&mntvnode_lock)); 5158 mutex_enter(&mntvnode_lock); 5159 while (udf_node->i_flags & IN_SYNCED) { 5160 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5161 hz/16); 5162 } 5163 mutex_exit(&mntvnode_lock); 5164 5165 /* TODO extended attributes and streamdir */ 5166 5167 /* remove dirhash if present */ 5168 dirhash_purge(&udf_node->dir_hash); 5169 5170 /* remove from our hash lookup table */ 5171 udf_deregister_node(udf_node); 5172 5173 /* destroy our lock */ 5174 mutex_destroy(&udf_node->node_mutex); 5175 cv_destroy(&udf_node->node_lock); 5176 5177 /* dissociate our udf_node from the vnode */ 5178 genfs_node_destroy(udf_node->vnode); 5179 vp->v_data = NULL; 5180 5181 /* free associated memory and the node itself */ 5182 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5183 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5184 udf_node->ext[extnr]); 5185 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5186 } 5187 5188 if (udf_node->fe) 5189 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5190 udf_node->fe); 5191 if (udf_node->efe) 5192 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5193 udf_node->efe); 5194 5195 udf_node->fe = (void *) 0xdeadaaaa; 5196 udf_node->efe = (void *) 0xdeadbbbb; 5197 udf_node->ump = (void *) 0xdeadbeef; 5198 pool_put(&udf_node_pool, udf_node); 5199 5200 return 0; 5201 } 5202 5203 5204 5205 /* 5206 * create a new node using the specified vnodeops, vap and cnp but with the 5207 * udf_file_type. This allows special files to be created. Use with care. 5208 */ 5209 5210 static int 5211 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5212 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5213 { 5214 union dscrptr *dscr; 5215 struct udf_node *dir_node = VTOI(dvp);; 5216 struct udf_node *udf_node; 5217 struct udf_mount *ump = dir_node->ump; 5218 struct vnode *nvp; 5219 struct long_ad node_icb_loc; 5220 uint64_t parent_unique_id; 5221 uint64_t lmapping; 5222 uint32_t lb_size, lb_num; 5223 uint16_t vpart_num; 5224 uid_t uid; 5225 gid_t gid, parent_gid; 5226 int fid_size, error; 5227 5228 lb_size = udf_rw32(ump->logical_vol->lb_size); 5229 *vpp = NULL; 5230 5231 /* allocate vnode */ 5232 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5233 if (error) 5234 return error; 5235 5236 /* lock node */ 5237 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5238 if (error) { 5239 nvp->v_data = NULL; 5240 ungetnewvnode(nvp); 5241 return error; 5242 } 5243 5244 /* get disc allocation for one logical block */ 5245 vpart_num = ump->node_part; 5246 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5247 vpart_num, &lmapping); 5248 lb_num = lmapping; 5249 if (error) { 5250 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5251 ungetnewvnode(nvp); 5252 return error; 5253 } 5254 5255 /* initialise pointer to location */ 5256 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5257 node_icb_loc.len = lb_size; 5258 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5259 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5260 5261 /* build udf_node (do initialise!) */ 5262 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5263 memset(udf_node, 0, sizeof(struct udf_node)); 5264 5265 /* initialise crosslinks, note location of fe/efe for hashing */ 5266 /* bugalert: synchronise with udf_get_node() */ 5267 udf_node->ump = ump; 5268 udf_node->vnode = nvp; 5269 nvp->v_data = udf_node; 5270 udf_node->loc = node_icb_loc; 5271 udf_node->write_loc = node_icb_loc; 5272 udf_node->lockf = 0; 5273 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5274 cv_init(&udf_node->node_lock, "udf_nlk"); 5275 udf_node->outstanding_bufs = 0; 5276 udf_node->outstanding_nodedscr = 0; 5277 5278 /* initialise genfs */ 5279 genfs_node_init(nvp, &udf_genfsops); 5280 5281 /* insert into the hash lookup */ 5282 udf_register_node(udf_node); 5283 5284 /* get parent's unique ID for refering '..' if its a directory */ 5285 if (dir_node->fe) { 5286 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5287 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5288 } else { 5289 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5290 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5291 } 5292 5293 /* get descriptor */ 5294 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5295 5296 /* choose a fe or an efe for it */ 5297 if (ump->logical_vol->tag.descriptor_ver == 2) { 5298 udf_node->fe = &dscr->fe; 5299 fid_size = udf_create_new_fe(ump, udf_node->fe, 5300 udf_file_type, &udf_node->loc, 5301 &dir_node->loc, parent_unique_id); 5302 /* TODO add extended attribute for creation time */ 5303 } else { 5304 udf_node->efe = &dscr->efe; 5305 fid_size = udf_create_new_efe(ump, udf_node->efe, 5306 udf_file_type, &udf_node->loc, 5307 &dir_node->loc, parent_unique_id); 5308 } 5309 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5310 5311 /* update vnode's size and type */ 5312 nvp->v_type = vap->va_type; 5313 uvm_vnp_setsize(nvp, fid_size); 5314 5315 /* set access mode */ 5316 udf_setaccessmode(udf_node, vap->va_mode); 5317 5318 /* set ownership */ 5319 uid = kauth_cred_geteuid(cnp->cn_cred); 5320 gid = parent_gid; 5321 udf_setownership(udf_node, uid, gid); 5322 5323 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5324 if (error) { 5325 /* free disc allocation for node */ 5326 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5327 5328 /* recycle udf_node */ 5329 udf_dispose_node(udf_node); 5330 vput(nvp); 5331 5332 *vpp = NULL; 5333 return error; 5334 } 5335 5336 /* adjust file count */ 5337 udf_adjust_filecount(udf_node, 1); 5338 5339 /* return result */ 5340 *vpp = nvp; 5341 5342 return 0; 5343 } 5344 5345 5346 int 5347 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5348 struct componentname *cnp) 5349 { 5350 int (**vnodeops)(void *); 5351 int udf_file_type; 5352 5353 DPRINTF(NODE, ("udf_create_node called\n")); 5354 5355 /* what type are we creating ? */ 5356 vnodeops = udf_vnodeop_p; 5357 /* start with a default */ 5358 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5359 5360 *vpp = NULL; 5361 5362 switch (vap->va_type) { 5363 case VREG : 5364 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5365 break; 5366 case VDIR : 5367 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5368 break; 5369 case VLNK : 5370 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5371 break; 5372 case VBLK : 5373 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5374 /* specfs */ 5375 return ENOTSUP; 5376 break; 5377 case VCHR : 5378 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5379 /* specfs */ 5380 return ENOTSUP; 5381 break; 5382 case VFIFO : 5383 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5384 /* specfs */ 5385 return ENOTSUP; 5386 break; 5387 case VSOCK : 5388 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5389 /* specfs */ 5390 return ENOTSUP; 5391 break; 5392 case VNON : 5393 case VBAD : 5394 default : 5395 /* nothing; can we even create these? */ 5396 return EINVAL; 5397 } 5398 5399 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5400 } 5401 5402 /* --------------------------------------------------------------------- */ 5403 5404 static void 5405 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5406 { 5407 struct udf_mount *ump = udf_node->ump; 5408 uint32_t lb_size, lb_num, len, num_lb; 5409 uint16_t vpart_num; 5410 5411 /* is there really one? */ 5412 if (mem == NULL) 5413 return; 5414 5415 /* got a descriptor here */ 5416 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5417 lb_num = udf_rw32(loc->loc.lb_num); 5418 vpart_num = udf_rw16(loc->loc.part_num); 5419 5420 lb_size = udf_rw32(ump->logical_vol->lb_size); 5421 num_lb = (len + lb_size -1) / lb_size; 5422 5423 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5424 } 5425 5426 void 5427 udf_delete_node(struct udf_node *udf_node) 5428 { 5429 void *dscr; 5430 struct udf_mount *ump; 5431 struct long_ad *loc; 5432 int extnr, lvint, dummy; 5433 5434 ump = udf_node->ump; 5435 5436 /* paranoia check on integrity; should be open!; we could panic */ 5437 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5438 if (lvint == UDF_INTEGRITY_CLOSED) 5439 printf("\tIntegrity was CLOSED!\n"); 5440 5441 /* whatever the node type, change its size to zero */ 5442 (void) udf_resize_node(udf_node, 0, &dummy); 5443 5444 /* force it to be `clean'; no use writing it out */ 5445 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5446 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5447 5448 /* adjust file count */ 5449 udf_adjust_filecount(udf_node, -1); 5450 5451 /* 5452 * Free its allocated descriptors; memory will be released when 5453 * vop_reclaim() is called. 5454 */ 5455 loc = &udf_node->loc; 5456 5457 dscr = udf_node->fe; 5458 udf_free_descriptor_space(udf_node, loc, dscr); 5459 dscr = udf_node->efe; 5460 udf_free_descriptor_space(udf_node, loc, dscr); 5461 5462 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5463 dscr = udf_node->ext[extnr]; 5464 loc = &udf_node->ext_loc[extnr]; 5465 udf_free_descriptor_space(udf_node, loc, dscr); 5466 } 5467 } 5468 5469 /* --------------------------------------------------------------------- */ 5470 5471 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5472 int 5473 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5474 { 5475 struct file_entry *fe = udf_node->fe; 5476 struct extfile_entry *efe = udf_node->efe; 5477 uint64_t file_size; 5478 int error; 5479 5480 if (fe) { 5481 file_size = udf_rw64(fe->inf_len); 5482 } else { 5483 assert(udf_node->efe); 5484 file_size = udf_rw64(efe->inf_len); 5485 } 5486 5487 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5488 file_size, new_size)); 5489 5490 /* if not changing, we're done */ 5491 if (file_size == new_size) 5492 return 0; 5493 5494 *extended = (new_size > file_size); 5495 if (*extended) { 5496 error = udf_grow_node(udf_node, new_size); 5497 } else { 5498 error = udf_shrink_node(udf_node, new_size); 5499 } 5500 5501 return error; 5502 } 5503 5504 5505 /* --------------------------------------------------------------------- */ 5506 5507 void 5508 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5509 struct timespec *mod, struct timespec *birth) 5510 { 5511 struct timespec now; 5512 struct file_entry *fe; 5513 struct extfile_entry *efe; 5514 struct filetimes_extattr_entry *ft_extattr; 5515 struct timestamp *atime, *mtime, *attrtime, *ctime; 5516 struct timestamp fe_ctime; 5517 struct timespec cur_birth; 5518 uint32_t offset, a_l; 5519 uint8_t *filedata; 5520 int error; 5521 5522 /* protect against rogue values */ 5523 if (!udf_node) 5524 return; 5525 5526 fe = udf_node->fe; 5527 efe = udf_node->efe; 5528 5529 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5530 return; 5531 5532 /* get descriptor information */ 5533 if (fe) { 5534 atime = &fe->atime; 5535 mtime = &fe->mtime; 5536 attrtime = &fe->attrtime; 5537 filedata = fe->data; 5538 5539 /* initial save dummy setting */ 5540 ctime = &fe_ctime; 5541 5542 /* check our extended attribute if present */ 5543 error = udf_extattr_search_intern(udf_node, 5544 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5545 if (!error) { 5546 ft_extattr = (struct filetimes_extattr_entry *) 5547 (filedata + offset); 5548 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5549 ctime = &ft_extattr->times[0]; 5550 } 5551 /* TODO create the extended attribute if not found ? */ 5552 } else { 5553 assert(udf_node->efe); 5554 atime = &efe->atime; 5555 mtime = &efe->mtime; 5556 attrtime = &efe->attrtime; 5557 ctime = &efe->ctime; 5558 } 5559 5560 vfs_timestamp(&now); 5561 5562 /* set access time */ 5563 if (udf_node->i_flags & IN_ACCESS) { 5564 if (acc == NULL) 5565 acc = &now; 5566 udf_timespec_to_timestamp(acc, atime); 5567 } 5568 5569 /* set modification time */ 5570 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5571 if (mod == NULL) 5572 mod = &now; 5573 udf_timespec_to_timestamp(mod, mtime); 5574 5575 /* ensure birthtime is older than set modification! */ 5576 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5577 if ((cur_birth.tv_sec > mod->tv_sec) || 5578 ((cur_birth.tv_sec == mod->tv_sec) && 5579 (cur_birth.tv_nsec > mod->tv_nsec))) { 5580 udf_timespec_to_timestamp(mod, ctime); 5581 } 5582 } 5583 5584 /* update birthtime if specified */ 5585 /* XXX we asume here that given birthtime is older than mod */ 5586 if (birth && (birth->tv_sec != VNOVAL)) { 5587 udf_timespec_to_timestamp(birth, ctime); 5588 } 5589 5590 /* set change time */ 5591 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5592 udf_timespec_to_timestamp(&now, attrtime); 5593 5594 /* notify updates to the node itself */ 5595 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5596 udf_node->i_flags |= IN_ACCESSED; 5597 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5598 udf_node->i_flags |= IN_MODIFIED; 5599 5600 /* clear modification flags */ 5601 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5602 } 5603 5604 /* --------------------------------------------------------------------- */ 5605 5606 int 5607 udf_update(struct vnode *vp, struct timespec *acc, 5608 struct timespec *mod, struct timespec *birth, int updflags) 5609 { 5610 union dscrptr *dscrptr; 5611 struct udf_node *udf_node = VTOI(vp); 5612 struct udf_mount *ump = udf_node->ump; 5613 struct regid *impl_id; 5614 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5615 int waitfor, flags; 5616 5617 #ifdef DEBUG 5618 char bits[128]; 5619 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5620 updflags)); 5621 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5622 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5623 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5624 #endif 5625 5626 /* set our times */ 5627 udf_itimes(udf_node, acc, mod, birth); 5628 5629 /* set our implementation id */ 5630 if (udf_node->fe) { 5631 dscrptr = (union dscrptr *) udf_node->fe; 5632 impl_id = &udf_node->fe->imp_id; 5633 } else { 5634 dscrptr = (union dscrptr *) udf_node->efe; 5635 impl_id = &udf_node->efe->imp_id; 5636 } 5637 5638 /* set our ID */ 5639 udf_set_regid(impl_id, IMPL_NAME); 5640 udf_add_impl_regid(ump, impl_id); 5641 5642 /* update our crc! on RMW we are not allowed to change a thing */ 5643 udf_validate_tag_and_crc_sums(dscrptr); 5644 5645 /* if called when mounted readonly, never write back */ 5646 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5647 return 0; 5648 5649 /* check if the node is dirty 'enough'*/ 5650 if (updflags & UPDATE_CLOSE) { 5651 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5652 } else { 5653 flags = udf_node->i_flags & IN_MODIFIED; 5654 } 5655 if (flags == 0) 5656 return 0; 5657 5658 /* determine if we need to write sync or async */ 5659 waitfor = 0; 5660 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5661 /* sync mounted */ 5662 waitfor = updflags & UPDATE_WAIT; 5663 if (updflags & UPDATE_DIROP) 5664 waitfor |= UPDATE_WAIT; 5665 } 5666 if (waitfor) 5667 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5668 5669 return 0; 5670 } 5671 5672 5673 /* --------------------------------------------------------------------- */ 5674 5675 5676 /* 5677 * Read one fid and process it into a dirent and advance to the next (*fid) 5678 * has to be allocated a logical block in size, (*dirent) struct dirent length 5679 */ 5680 5681 int 5682 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5683 struct fileid_desc *fid, struct dirent *dirent) 5684 { 5685 struct udf_node *dir_node = VTOI(vp); 5686 struct udf_mount *ump = dir_node->ump; 5687 struct file_entry *fe = dir_node->fe; 5688 struct extfile_entry *efe = dir_node->efe; 5689 uint32_t fid_size, lb_size; 5690 uint64_t file_size; 5691 char *fid_name; 5692 int enough, error; 5693 5694 assert(fid); 5695 assert(dirent); 5696 assert(dir_node); 5697 assert(offset); 5698 assert(*offset != 1); 5699 5700 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5701 /* check if we're past the end of the directory */ 5702 if (fe) { 5703 file_size = udf_rw64(fe->inf_len); 5704 } else { 5705 assert(dir_node->efe); 5706 file_size = udf_rw64(efe->inf_len); 5707 } 5708 if (*offset >= file_size) 5709 return EINVAL; 5710 5711 /* get maximum length of FID descriptor */ 5712 lb_size = udf_rw32(ump->logical_vol->lb_size); 5713 5714 /* initialise return values */ 5715 fid_size = 0; 5716 memset(dirent, 0, sizeof(struct dirent)); 5717 memset(fid, 0, lb_size); 5718 5719 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5720 if (!enough) { 5721 /* short dir ... */ 5722 return EIO; 5723 } 5724 5725 error = vn_rdwr(UIO_READ, vp, 5726 fid, MIN(file_size - (*offset), lb_size), *offset, 5727 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5728 NULL, NULL); 5729 if (error) 5730 return error; 5731 5732 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5733 /* 5734 * Check if we got a whole descriptor. 5735 * TODO Try to `resync' directory stream when something is very wrong. 5736 */ 5737 5738 /* check if our FID header is OK */ 5739 error = udf_check_tag(fid); 5740 if (error) { 5741 goto brokendir; 5742 } 5743 DPRINTF(FIDS, ("\ttag check ok\n")); 5744 5745 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5746 error = EIO; 5747 goto brokendir; 5748 } 5749 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5750 5751 /* check for length */ 5752 fid_size = udf_fidsize(fid); 5753 enough = (file_size - (*offset) >= fid_size); 5754 if (!enough) { 5755 error = EIO; 5756 goto brokendir; 5757 } 5758 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5759 5760 /* check FID contents */ 5761 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5762 brokendir: 5763 if (error) { 5764 /* note that is sometimes a bit quick to report */ 5765 printf("BROKEN DIRECTORY ENTRY\n"); 5766 /* RESYNC? */ 5767 /* TODO: use udf_resync_fid_stream */ 5768 return EIO; 5769 } 5770 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5771 5772 /* we got a whole and valid descriptor! */ 5773 DPRINTF(FIDS, ("\tinterpret FID\n")); 5774 5775 /* create resulting dirent structure */ 5776 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5777 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 5778 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5779 5780 /* '..' has no name, so provide one */ 5781 if (fid->file_char & UDF_FILE_CHAR_PAR) 5782 strcpy(dirent->d_name, ".."); 5783 5784 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5785 dirent->d_namlen = strlen(dirent->d_name); 5786 dirent->d_reclen = _DIRENT_SIZE(dirent); 5787 5788 /* 5789 * Note that its not worth trying to go for the filetypes now... its 5790 * too expensive too 5791 */ 5792 dirent->d_type = DT_UNKNOWN; 5793 5794 /* initial guess for filetype we can make */ 5795 if (fid->file_char & UDF_FILE_CHAR_DIR) 5796 dirent->d_type = DT_DIR; 5797 5798 /* advance */ 5799 *offset += fid_size; 5800 5801 return error; 5802 } 5803 5804 5805 /* --------------------------------------------------------------------- */ 5806 5807 static void 5808 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5809 int pass, int *ndirty) 5810 { 5811 struct udf_node *udf_node, *n_udf_node; 5812 struct vnode *vp; 5813 int vdirty, error; 5814 int on_type, on_flags, on_vnode; 5815 5816 derailed: 5817 KASSERT(mutex_owned(&mntvnode_lock)); 5818 5819 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 5820 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 5821 for (;udf_node; udf_node = n_udf_node) { 5822 DPRINTF(SYNC, (".")); 5823 5824 udf_node->i_flags &= ~IN_SYNCED; 5825 vp = udf_node->vnode; 5826 5827 mutex_enter(&vp->v_interlock); 5828 n_udf_node = LIST_NEXT(udf_node, sortchain); 5829 if (n_udf_node) 5830 n_udf_node->i_flags |= IN_SYNCED; 5831 5832 /* system nodes are not synced this way */ 5833 if (vp->v_vflag & VV_SYSTEM) { 5834 mutex_exit(&vp->v_interlock); 5835 continue; 5836 } 5837 5838 /* check if its dirty enough to even try */ 5839 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 5840 on_flags = ((udf_node->i_flags & 5841 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 5842 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 5843 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 5844 if (on_type || (on_flags || on_vnode)) { /* XXX */ 5845 /* not dirty (enough?) */ 5846 mutex_exit(&vp->v_interlock); 5847 continue; 5848 } 5849 5850 mutex_exit(&mntvnode_lock); 5851 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 5852 if (error) { 5853 mutex_enter(&mntvnode_lock); 5854 if (error == ENOENT) 5855 goto derailed; 5856 *ndirty += 1; 5857 continue; 5858 } 5859 5860 switch (pass) { 5861 case 1: 5862 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 5863 break; 5864 case 2: 5865 vdirty = vp->v_numoutput; 5866 if (vp->v_tag == VT_UDF) 5867 vdirty += udf_node->outstanding_bufs + 5868 udf_node->outstanding_nodedscr; 5869 if (vdirty == 0) 5870 VOP_FSYNC(vp, cred, 0,0,0); 5871 *ndirty += vdirty; 5872 break; 5873 case 3: 5874 vdirty = vp->v_numoutput; 5875 if (vp->v_tag == VT_UDF) 5876 vdirty += udf_node->outstanding_bufs + 5877 udf_node->outstanding_nodedscr; 5878 *ndirty += vdirty; 5879 break; 5880 } 5881 5882 vput(vp); 5883 mutex_enter(&mntvnode_lock); 5884 } 5885 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 5886 } 5887 5888 5889 void 5890 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 5891 { 5892 int dummy, ndirty; 5893 5894 mutex_enter(&mntvnode_lock); 5895 recount: 5896 dummy = 0; 5897 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5898 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5899 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 5900 5901 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5902 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5903 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 5904 5905 if (waitfor == MNT_WAIT) { 5906 ndirty = ump->devvp->v_numoutput; 5907 DPRINTF(NODE, ("counting pending blocks: on devvp %d\n", 5908 ndirty)); 5909 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 5910 DPRINTF(NODE, ("counted num dirty pending blocks %d\n", 5911 ndirty)); 5912 5913 if (ndirty) { 5914 /* 1/4 second wait */ 5915 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 5916 hz/4); 5917 goto recount; 5918 } 5919 } 5920 5921 mutex_exit(&mntvnode_lock); 5922 } 5923 5924 /* --------------------------------------------------------------------- */ 5925 5926 /* 5927 * Read and write file extent in/from the buffer. 5928 * 5929 * The splitup of the extent into seperate request-buffers is to minimise 5930 * copying around as much as possible. 5931 * 5932 * block based file reading and writing 5933 */ 5934 5935 static int 5936 udf_read_internal(struct udf_node *node, uint8_t *blob) 5937 { 5938 struct udf_mount *ump; 5939 struct file_entry *fe = node->fe; 5940 struct extfile_entry *efe = node->efe; 5941 uint64_t inflen; 5942 uint32_t sector_size; 5943 uint8_t *pos; 5944 int icbflags, addr_type; 5945 5946 /* get extent and do some paranoia checks */ 5947 ump = node->ump; 5948 sector_size = ump->discinfo.sector_size; 5949 5950 if (fe) { 5951 inflen = udf_rw64(fe->inf_len); 5952 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5953 icbflags = udf_rw16(fe->icbtag.flags); 5954 } else { 5955 assert(node->efe); 5956 inflen = udf_rw64(efe->inf_len); 5957 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5958 icbflags = udf_rw16(efe->icbtag.flags); 5959 } 5960 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5961 5962 assert(addr_type == UDF_ICB_INTERN_ALLOC); 5963 assert(inflen < sector_size); 5964 5965 /* copy out info */ 5966 memset(blob, 0, sector_size); 5967 memcpy(blob, pos, inflen); 5968 5969 return 0; 5970 } 5971 5972 5973 static int 5974 udf_write_internal(struct udf_node *node, uint8_t *blob) 5975 { 5976 struct udf_mount *ump; 5977 struct file_entry *fe = node->fe; 5978 struct extfile_entry *efe = node->efe; 5979 uint64_t inflen; 5980 uint32_t sector_size; 5981 uint8_t *pos; 5982 int icbflags, addr_type; 5983 5984 /* get extent and do some paranoia checks */ 5985 ump = node->ump; 5986 sector_size = ump->discinfo.sector_size; 5987 5988 if (fe) { 5989 inflen = udf_rw64(fe->inf_len); 5990 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5991 icbflags = udf_rw16(fe->icbtag.flags); 5992 } else { 5993 assert(node->efe); 5994 inflen = udf_rw64(efe->inf_len); 5995 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5996 icbflags = udf_rw16(efe->icbtag.flags); 5997 } 5998 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5999 6000 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6001 assert(inflen < sector_size); 6002 6003 /* copy in blob */ 6004 /* memset(pos, 0, inflen); */ 6005 memcpy(pos, blob, inflen); 6006 6007 return 0; 6008 } 6009 6010 6011 void 6012 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6013 { 6014 struct buf *nestbuf; 6015 struct udf_mount *ump = udf_node->ump; 6016 uint64_t *mapping; 6017 uint64_t run_start; 6018 uint32_t sector_size; 6019 uint32_t buf_offset, sector, rbuflen, rblk; 6020 uint32_t from, lblkno; 6021 uint32_t sectors; 6022 uint8_t *buf_pos; 6023 int error, run_length, isdir, what; 6024 6025 sector_size = udf_node->ump->discinfo.sector_size; 6026 6027 from = buf->b_blkno; 6028 sectors = buf->b_bcount / sector_size; 6029 6030 isdir = (udf_node->vnode->v_type == VDIR); 6031 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6032 6033 /* assure we have enough translation slots */ 6034 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6035 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6036 6037 if (sectors > UDF_MAX_MAPPINGS) { 6038 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6039 buf->b_error = EIO; 6040 biodone(buf); 6041 return; 6042 } 6043 6044 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6045 6046 error = 0; 6047 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6048 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6049 if (error) { 6050 buf->b_error = error; 6051 biodone(buf); 6052 goto out; 6053 } 6054 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6055 6056 /* pre-check if its an internal */ 6057 if (*mapping == UDF_TRANS_INTERN) { 6058 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6059 if (error) 6060 buf->b_error = error; 6061 biodone(buf); 6062 goto out; 6063 } 6064 DPRINTF(READ, ("\tnot intern\n")); 6065 6066 #ifdef DEBUG 6067 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6068 printf("Returned translation table:\n"); 6069 for (sector = 0; sector < sectors; sector++) { 6070 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6071 } 6072 } 6073 #endif 6074 6075 /* request read-in of data from disc sheduler */ 6076 buf->b_resid = buf->b_bcount; 6077 for (sector = 0; sector < sectors; sector++) { 6078 buf_offset = sector * sector_size; 6079 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6080 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6081 6082 /* check if its zero or unmapped to stop reading */ 6083 switch (mapping[sector]) { 6084 case UDF_TRANS_UNMAPPED: 6085 case UDF_TRANS_ZERO: 6086 /* copy zero sector TODO runlength like below */ 6087 memset(buf_pos, 0, sector_size); 6088 DPRINTF(READ, ("\treturning zero sector\n")); 6089 nestiobuf_done(buf, sector_size, 0); 6090 break; 6091 default : 6092 DPRINTF(READ, ("\tread sector " 6093 "%"PRIu64"\n", mapping[sector])); 6094 6095 lblkno = from + sector; 6096 run_start = mapping[sector]; 6097 run_length = 1; 6098 while (sector < sectors-1) { 6099 if (mapping[sector+1] != mapping[sector]+1) 6100 break; 6101 run_length++; 6102 sector++; 6103 } 6104 6105 /* 6106 * nest an iobuf and mark it for async reading. Since 6107 * we're using nested buffers, they can't be cached by 6108 * design. 6109 */ 6110 rbuflen = run_length * sector_size; 6111 rblk = run_start * (sector_size/DEV_BSIZE); 6112 6113 nestbuf = getiobuf(NULL, true); 6114 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6115 /* nestbuf is B_ASYNC */ 6116 6117 /* identify this nestbuf */ 6118 nestbuf->b_lblkno = lblkno; 6119 assert(nestbuf->b_vp == udf_node->vnode); 6120 6121 /* CD shedules on raw blkno */ 6122 nestbuf->b_blkno = rblk; 6123 nestbuf->b_proc = NULL; 6124 nestbuf->b_rawblkno = rblk; 6125 nestbuf->b_udf_c_type = what; 6126 6127 udf_discstrat_queuebuf(ump, nestbuf); 6128 } 6129 } 6130 out: 6131 /* if we're synchronously reading, wait for the completion */ 6132 if ((buf->b_flags & B_ASYNC) == 0) 6133 biowait(buf); 6134 6135 DPRINTF(READ, ("\tend of read_filebuf\n")); 6136 free(mapping, M_TEMP); 6137 return; 6138 } 6139 6140 6141 void 6142 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6143 { 6144 struct buf *nestbuf; 6145 struct udf_mount *ump = udf_node->ump; 6146 uint64_t *mapping; 6147 uint64_t run_start; 6148 uint32_t lb_size; 6149 uint32_t buf_offset, lb_num, rbuflen, rblk; 6150 uint32_t from, lblkno; 6151 uint32_t num_lb; 6152 uint8_t *buf_pos; 6153 int error, run_length, isdir, what, s; 6154 6155 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6156 6157 from = buf->b_blkno; 6158 num_lb = buf->b_bcount / lb_size; 6159 6160 isdir = (udf_node->vnode->v_type == VDIR); 6161 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6162 6163 if (udf_node == ump->metadatabitmap_node) 6164 what = UDF_C_METADATA_SBM; 6165 6166 /* assure we have enough translation slots */ 6167 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6168 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6169 6170 if (num_lb > UDF_MAX_MAPPINGS) { 6171 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6172 buf->b_error = EIO; 6173 biodone(buf); 6174 return; 6175 } 6176 6177 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6178 6179 error = 0; 6180 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6181 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6182 if (error) { 6183 buf->b_error = error; 6184 biodone(buf); 6185 goto out; 6186 } 6187 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6188 6189 /* if its internally mapped, we can write it in the descriptor itself */ 6190 if (*mapping == UDF_TRANS_INTERN) { 6191 /* TODO paranoia check if we ARE going to have enough space */ 6192 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6193 if (error) 6194 buf->b_error = error; 6195 biodone(buf); 6196 goto out; 6197 } 6198 DPRINTF(WRITE, ("\tnot intern\n")); 6199 6200 /* request write out of data to disc sheduler */ 6201 buf->b_resid = buf->b_bcount; 6202 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6203 buf_offset = lb_num * lb_size; 6204 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6205 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6206 6207 /* 6208 * Mappings are not that important here. Just before we write 6209 * the lb_num we late-allocate them when needed and update the 6210 * mapping in the udf_node. 6211 */ 6212 6213 /* XXX why not ignore the mapping altogether ? */ 6214 /* TODO estimate here how much will be late-allocated */ 6215 DPRINTF(WRITE, ("\twrite lb_num " 6216 "%"PRIu64, mapping[lb_num])); 6217 6218 lblkno = from + lb_num; 6219 run_start = mapping[lb_num]; 6220 run_length = 1; 6221 while (lb_num < num_lb-1) { 6222 if (mapping[lb_num+1] != mapping[lb_num]+1) 6223 if (mapping[lb_num+1] != mapping[lb_num]) 6224 break; 6225 run_length++; 6226 lb_num++; 6227 } 6228 DPRINTF(WRITE, ("+ %d\n", run_length)); 6229 6230 /* nest an iobuf on the master buffer for the extent */ 6231 rbuflen = run_length * lb_size; 6232 rblk = run_start * (lb_size/DEV_BSIZE); 6233 6234 #if 0 6235 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6236 switch (mapping[lb_num]) { 6237 case UDF_TRANS_UNMAPPED: 6238 case UDF_TRANS_ZERO: 6239 rblk = -1; 6240 break; 6241 default: 6242 rblk = run_start * (lb_size/DEV_BSIZE); 6243 break; 6244 } 6245 #endif 6246 6247 nestbuf = getiobuf(NULL, true); 6248 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6249 /* nestbuf is B_ASYNC */ 6250 6251 /* identify this nestbuf */ 6252 nestbuf->b_lblkno = lblkno; 6253 KASSERT(nestbuf->b_vp == udf_node->vnode); 6254 6255 /* CD shedules on raw blkno */ 6256 nestbuf->b_blkno = rblk; 6257 nestbuf->b_proc = NULL; 6258 nestbuf->b_rawblkno = rblk; 6259 nestbuf->b_udf_c_type = what; 6260 6261 /* increment our outstanding bufs counter */ 6262 s = splbio(); 6263 udf_node->outstanding_bufs++; 6264 splx(s); 6265 6266 udf_discstrat_queuebuf(ump, nestbuf); 6267 } 6268 out: 6269 /* if we're synchronously writing, wait for the completion */ 6270 if ((buf->b_flags & B_ASYNC) == 0) 6271 biowait(buf); 6272 6273 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6274 free(mapping, M_TEMP); 6275 return; 6276 } 6277 6278 /* --------------------------------------------------------------------- */ 6279 6280 6281
Indexes created Sat Sep 27 14:09:57 GMT 2025