udf_subr.c revision 1.80
1 /* $NetBSD: udf_subr.c,v 1.80 2008/12/16 22:35:36 christos 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 1.80 2008/12/16 22:35:36 christos Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_compat_netbsd.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/sysctl.h> 43 #include <sys/namei.h> 44 #include <sys/proc.h> 45 #include <sys/kernel.h> 46 #include <sys/vnode.h> 47 #include <miscfs/genfs/genfs_node.h> 48 #include <sys/mount.h> 49 #include <sys/buf.h> 50 #include <sys/file.h> 51 #include <sys/device.h> 52 #include <sys/disklabel.h> 53 #include <sys/ioctl.h> 54 #include <sys/malloc.h> 55 #include <sys/dirent.h> 56 #include <sys/stat.h> 57 #include <sys/conf.h> 58 #include <sys/kauth.h> 59 #include <fs/unicode.h> 60 #include <dev/clock_subr.h> 61 62 #include <fs/udf/ecma167-udf.h> 63 #include <fs/udf/udf_mount.h> 64 #include <sys/dirhash.h> 65 66 #include "udf.h" 67 #include "udf_subr.h" 68 #include "udf_bswap.h" 69 70 71 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 72 73 #define UDF_SET_SYSTEMFILE(vp) \ 74 /* XXXAD Is the vnode locked? */ \ 75 (vp)->v_vflag |= VV_SYSTEM; \ 76 vref(vp); \ 77 vput(vp); \ 78 79 extern int syncer_maxdelay; /* maximum delay time */ 80 extern int (**udf_vnodeop_p)(void *); 81 82 /* --------------------------------------------------------------------- */ 83 84 //#ifdef DEBUG 85 #if 1 86 87 #if 0 88 static void 89 udf_dumpblob(boid *blob, uint32_t dlen) 90 { 91 int i, j; 92 93 printf("blob = %p\n", blob); 94 printf("dump of %d bytes\n", dlen); 95 96 for (i = 0; i < dlen; i+ = 16) { 97 printf("%04x ", i); 98 for (j = 0; j < 16; j++) { 99 if (i+j < dlen) { 100 printf("%02x ", blob[i+j]); 101 } else { 102 printf(" "); 103 } 104 } 105 for (j = 0; j < 16; j++) { 106 if (i+j < dlen) { 107 if (blob[i+j]>32 && blob[i+j]! = 127) { 108 printf("%c", blob[i+j]); 109 } else { 110 printf("."); 111 } 112 } 113 } 114 printf("\n"); 115 } 116 printf("\n"); 117 Debugger(); 118 } 119 #endif 120 121 static void 122 udf_dump_discinfo(struct udf_mount *ump) 123 { 124 char bits[128]; 125 struct mmc_discinfo *di = &ump->discinfo; 126 127 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 128 return; 129 130 printf("Device/media info :\n"); 131 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 132 printf("\tderived class %d\n", di->mmc_class); 133 printf("\tsector size %d\n", di->sector_size); 134 printf("\tdisc state %d\n", di->disc_state); 135 printf("\tlast ses state %d\n", di->last_session_state); 136 printf("\tbg format state %d\n", di->bg_format_state); 137 printf("\tfrst track %d\n", di->first_track); 138 printf("\tfst on last ses %d\n", di->first_track_last_session); 139 printf("\tlst on last ses %d\n", di->last_track_last_session); 140 printf("\tlink block penalty %d\n", di->link_block_penalty); 141 snprintb(bits, sizeof(bits), MMC_DFLAGS_FLAGBITS, di->disc_flags); 142 printf("\tdisc flags %s\n", bits); 143 printf("\tdisc id %x\n", di->disc_id); 144 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 145 146 printf("\tnum sessions %d\n", di->num_sessions); 147 printf("\tnum tracks %d\n", di->num_tracks); 148 149 snprintb(bits, sizeof(bits), MMC_CAP_FLAGBITS, di->mmc_cur); 150 printf("\tcapabilities cur %s\n", bits); 151 snprintb(bits, sizeof(bits), MMC_CAP_FLAGBITS, di->mmc_cap); 152 printf("\tcapabilities cap %s\n", bits); 153 } 154 #else 155 #define udf_dump_discinfo(a); 156 #endif 157 158 159 /* --------------------------------------------------------------------- */ 160 161 /* not called often */ 162 int 163 udf_update_discinfo(struct udf_mount *ump) 164 { 165 struct vnode *devvp = ump->devvp; 166 struct partinfo dpart; 167 struct mmc_discinfo *di; 168 int error; 169 170 DPRINTF(VOLUMES, ("read/update disc info\n")); 171 di = &ump->discinfo; 172 memset(di, 0, sizeof(struct mmc_discinfo)); 173 174 /* check if we're on a MMC capable device, i.e. CD/DVD */ 175 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 176 if (error == 0) { 177 udf_dump_discinfo(ump); 178 return 0; 179 } 180 181 /* disc partition support */ 182 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 183 if (error) 184 return ENODEV; 185 186 /* set up a disc info profile for partitions */ 187 di->mmc_profile = 0x01; /* disc type */ 188 di->mmc_class = MMC_CLASS_DISC; 189 di->disc_state = MMC_STATE_CLOSED; 190 di->last_session_state = MMC_STATE_CLOSED; 191 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 192 di->link_block_penalty = 0; 193 194 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 195 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 196 di->mmc_cap = di->mmc_cur; 197 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 198 199 /* TODO problem with last_possible_lba on resizable VND; request */ 200 di->last_possible_lba = dpart.part->p_size; 201 di->sector_size = dpart.disklab->d_secsize; 202 203 di->num_sessions = 1; 204 di->num_tracks = 1; 205 206 di->first_track = 1; 207 di->first_track_last_session = di->last_track_last_session = 1; 208 209 udf_dump_discinfo(ump); 210 return 0; 211 } 212 213 214 int 215 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 216 { 217 struct vnode *devvp = ump->devvp; 218 struct mmc_discinfo *di = &ump->discinfo; 219 int error, class; 220 221 DPRINTF(VOLUMES, ("read track info\n")); 222 223 class = di->mmc_class; 224 if (class != MMC_CLASS_DISC) { 225 /* tracknr specified in struct ti */ 226 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 227 return error; 228 } 229 230 /* disc partition support */ 231 if (ti->tracknr != 1) 232 return EIO; 233 234 /* create fake ti (TODO check for resized vnds) */ 235 ti->sessionnr = 1; 236 237 ti->track_mode = 0; /* XXX */ 238 ti->data_mode = 0; /* XXX */ 239 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 240 241 ti->track_start = 0; 242 ti->packet_size = 1; 243 244 /* TODO support for resizable vnd */ 245 ti->track_size = di->last_possible_lba; 246 ti->next_writable = di->last_possible_lba; 247 ti->last_recorded = ti->next_writable; 248 ti->free_blocks = 0; 249 250 return 0; 251 } 252 253 254 int 255 udf_setup_writeparams(struct udf_mount *ump) 256 { 257 struct mmc_writeparams mmc_writeparams; 258 int error; 259 260 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 261 return 0; 262 263 /* 264 * only CD burning normally needs setting up, but other disc types 265 * might need other settings to be made. The MMC framework will set up 266 * the nessisary recording parameters according to the disc 267 * characteristics read in. Modifications can be made in the discinfo 268 * structure passed to change the nature of the disc. 269 */ 270 271 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 272 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 273 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 274 275 /* 276 * UDF dictates first track to determine track mode for the whole 277 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 278 * To prevent problems with a `reserved' track in front we start with 279 * the 2nd track and if that is not valid, go for the 1st. 280 */ 281 mmc_writeparams.tracknr = 2; 282 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 283 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 284 285 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 286 FKIOCTL, NOCRED); 287 if (error) { 288 mmc_writeparams.tracknr = 1; 289 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 290 &mmc_writeparams, FKIOCTL, NOCRED); 291 } 292 return error; 293 } 294 295 296 int 297 udf_synchronise_caches(struct udf_mount *ump) 298 { 299 struct mmc_op mmc_op; 300 301 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 302 303 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 304 return 0; 305 306 /* discs are done now */ 307 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 308 return 0; 309 310 bzero(&mmc_op, sizeof(struct mmc_op)); 311 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 312 313 /* ignore return code */ 314 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 315 316 return 0; 317 } 318 319 /* --------------------------------------------------------------------- */ 320 321 /* track/session searching for mounting */ 322 int 323 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 324 int *first_tracknr, int *last_tracknr) 325 { 326 struct mmc_trackinfo trackinfo; 327 uint32_t tracknr, start_track, num_tracks; 328 int error; 329 330 /* if negative, sessionnr is relative to last session */ 331 if (args->sessionnr < 0) { 332 args->sessionnr += ump->discinfo.num_sessions; 333 } 334 335 /* sanity */ 336 if (args->sessionnr < 0) 337 args->sessionnr = 0; 338 if (args->sessionnr > ump->discinfo.num_sessions) 339 args->sessionnr = ump->discinfo.num_sessions; 340 341 /* search the tracks for this session, zero session nr indicates last */ 342 if (args->sessionnr == 0) 343 args->sessionnr = ump->discinfo.num_sessions; 344 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 345 args->sessionnr--; 346 347 /* sanity again */ 348 if (args->sessionnr < 0) 349 args->sessionnr = 0; 350 351 /* search the first and last track of the specified session */ 352 num_tracks = ump->discinfo.num_tracks; 353 start_track = ump->discinfo.first_track; 354 355 /* search for first track of this session */ 356 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 357 /* get track info */ 358 trackinfo.tracknr = tracknr; 359 error = udf_update_trackinfo(ump, &trackinfo); 360 if (error) 361 return error; 362 363 if (trackinfo.sessionnr == args->sessionnr) 364 break; 365 } 366 *first_tracknr = tracknr; 367 368 /* search for last track of this session */ 369 for (;tracknr <= num_tracks; tracknr++) { 370 /* get track info */ 371 trackinfo.tracknr = tracknr; 372 error = udf_update_trackinfo(ump, &trackinfo); 373 if (error || (trackinfo.sessionnr != args->sessionnr)) { 374 tracknr--; 375 break; 376 } 377 } 378 if (tracknr > num_tracks) 379 tracknr--; 380 381 *last_tracknr = tracknr; 382 383 if (*last_tracknr < *first_tracknr) { 384 printf( "udf_search_tracks: sanity check on drive+disc failed, " 385 "drive returned garbage\n"); 386 return EINVAL; 387 } 388 389 assert(*last_tracknr >= *first_tracknr); 390 return 0; 391 } 392 393 394 /* 395 * NOTE: this is the only routine in this file that directly peeks into the 396 * metadata file but since its at a larval state of the mount it can't hurt. 397 * 398 * XXX candidate for udf_allocation.c 399 * XXX clean me up!, change to new node reading code. 400 */ 401 402 static void 403 udf_check_track_metadata_overlap(struct udf_mount *ump, 404 struct mmc_trackinfo *trackinfo) 405 { 406 struct part_desc *part; 407 struct file_entry *fe; 408 struct extfile_entry *efe; 409 struct short_ad *s_ad; 410 struct long_ad *l_ad; 411 uint32_t track_start, track_end; 412 uint32_t phys_part_start, phys_part_end, part_start, part_end; 413 uint32_t sector_size, len, alloclen, plb_num; 414 uint8_t *pos; 415 int addr_type, icblen, icbflags, flags; 416 417 /* get our track extents */ 418 track_start = trackinfo->track_start; 419 track_end = track_start + trackinfo->track_size; 420 421 /* get our base partition extent */ 422 KASSERT(ump->node_part == ump->fids_part); 423 part = ump->partitions[ump->node_part]; 424 phys_part_start = udf_rw32(part->start_loc); 425 phys_part_end = phys_part_start + udf_rw32(part->part_len); 426 427 /* no use if its outside the physical partition */ 428 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 429 return; 430 431 /* 432 * now follow all extents in the fe/efe to see if they refer to this 433 * track 434 */ 435 436 sector_size = ump->discinfo.sector_size; 437 438 /* XXX should we claim exclusive access to the metafile ? */ 439 /* TODO: move to new node read code */ 440 fe = ump->metadata_node->fe; 441 efe = ump->metadata_node->efe; 442 if (fe) { 443 alloclen = udf_rw32(fe->l_ad); 444 pos = &fe->data[0] + udf_rw32(fe->l_ea); 445 icbflags = udf_rw16(fe->icbtag.flags); 446 } else { 447 assert(efe); 448 alloclen = udf_rw32(efe->l_ad); 449 pos = &efe->data[0] + udf_rw32(efe->l_ea); 450 icbflags = udf_rw16(efe->icbtag.flags); 451 } 452 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 453 454 while (alloclen) { 455 if (addr_type == UDF_ICB_SHORT_ALLOC) { 456 icblen = sizeof(struct short_ad); 457 s_ad = (struct short_ad *) pos; 458 len = udf_rw32(s_ad->len); 459 plb_num = udf_rw32(s_ad->lb_num); 460 } else { 461 /* should not be present, but why not */ 462 icblen = sizeof(struct long_ad); 463 l_ad = (struct long_ad *) pos; 464 len = udf_rw32(l_ad->len); 465 plb_num = udf_rw32(l_ad->loc.lb_num); 466 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 467 } 468 /* process extent */ 469 flags = UDF_EXT_FLAGS(len); 470 len = UDF_EXT_LEN(len); 471 472 part_start = phys_part_start + plb_num; 473 part_end = part_start + (len / sector_size); 474 475 if ((part_start >= track_start) && (part_end <= track_end)) { 476 /* extent is enclosed within this track */ 477 ump->metadata_track = *trackinfo; 478 return; 479 } 480 481 pos += icblen; 482 alloclen -= icblen; 483 } 484 } 485 486 487 int 488 udf_search_writing_tracks(struct udf_mount *ump) 489 { 490 struct mmc_trackinfo trackinfo; 491 struct part_desc *part; 492 uint32_t tracknr, start_track, num_tracks; 493 uint32_t track_start, track_end, part_start, part_end; 494 int node_alloc, error; 495 496 /* 497 * in the CD/(HD)DVD/BD recordable device model a few tracks within 498 * the last session might be open but in the UDF device model at most 499 * three tracks can be open: a reserved track for delayed ISO VRS 500 * writing, a data track and a metadata track. We search here for the 501 * data track and the metadata track. Note that the reserved track is 502 * troublesome but can be detected by its small size of < 512 sectors. 503 */ 504 505 num_tracks = ump->discinfo.num_tracks; 506 start_track = ump->discinfo.first_track; 507 508 /* fetch info on first and possibly only track */ 509 trackinfo.tracknr = start_track; 510 error = udf_update_trackinfo(ump, &trackinfo); 511 if (error) 512 return error; 513 514 /* copy results to our mount point */ 515 ump->data_track = trackinfo; 516 ump->metadata_track = trackinfo; 517 518 /* if not sequential, we're done */ 519 if (num_tracks == 1) 520 return 0; 521 522 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 523 /* get track info */ 524 trackinfo.tracknr = tracknr; 525 error = udf_update_trackinfo(ump, &trackinfo); 526 if (error) 527 return error; 528 529 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 530 continue; 531 532 track_start = trackinfo.track_start; 533 track_end = track_start + trackinfo.track_size; 534 535 /* check for overlap on data partition */ 536 part = ump->partitions[ump->data_part]; 537 part_start = udf_rw32(part->start_loc); 538 part_end = part_start + udf_rw32(part->part_len); 539 if ((part_start < track_end) && (part_end > track_start)) { 540 ump->data_track = trackinfo; 541 /* TODO check if UDF partition data_part is writable */ 542 } 543 544 /* check for overlap on metadata partition */ 545 node_alloc = ump->vtop_alloc[ump->node_part]; 546 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 547 (node_alloc == UDF_ALLOC_METABITMAP)) { 548 udf_check_track_metadata_overlap(ump, &trackinfo); 549 } else { 550 ump->metadata_track = trackinfo; 551 } 552 } 553 554 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 555 return EROFS; 556 557 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 558 return EROFS; 559 560 return 0; 561 } 562 563 /* --------------------------------------------------------------------- */ 564 565 /* 566 * Check if the blob starts with a good UDF tag. Tags are protected by a 567 * checksum over the reader except one byte at position 4 that is the checksum 568 * itself. 569 */ 570 571 int 572 udf_check_tag(void *blob) 573 { 574 struct desc_tag *tag = blob; 575 uint8_t *pos, sum, cnt; 576 577 /* check TAG header checksum */ 578 pos = (uint8_t *) tag; 579 sum = 0; 580 581 for(cnt = 0; cnt < 16; cnt++) { 582 if (cnt != 4) 583 sum += *pos; 584 pos++; 585 } 586 if (sum != tag->cksum) { 587 /* bad tag header checksum; this is not a valid tag */ 588 return EINVAL; 589 } 590 591 return 0; 592 } 593 594 595 /* 596 * check tag payload will check descriptor CRC as specified. 597 * If the descriptor is too long, it will return EIO otherwise EINVAL. 598 */ 599 600 int 601 udf_check_tag_payload(void *blob, uint32_t max_length) 602 { 603 struct desc_tag *tag = blob; 604 uint16_t crc, crc_len; 605 606 crc_len = udf_rw16(tag->desc_crc_len); 607 608 /* check payload CRC if applicable */ 609 if (crc_len == 0) 610 return 0; 611 612 if (crc_len > max_length) 613 return EIO; 614 615 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 616 if (crc != udf_rw16(tag->desc_crc)) { 617 /* bad payload CRC; this is a broken tag */ 618 return EINVAL; 619 } 620 621 return 0; 622 } 623 624 625 void 626 udf_validate_tag_sum(void *blob) 627 { 628 struct desc_tag *tag = blob; 629 uint8_t *pos, sum, cnt; 630 631 /* calculate TAG header checksum */ 632 pos = (uint8_t *) tag; 633 sum = 0; 634 635 for(cnt = 0; cnt < 16; cnt++) { 636 if (cnt != 4) sum += *pos; 637 pos++; 638 } 639 tag->cksum = sum; /* 8 bit */ 640 } 641 642 643 /* assumes sector number of descriptor to be saved already present */ 644 void 645 udf_validate_tag_and_crc_sums(void *blob) 646 { 647 struct desc_tag *tag = blob; 648 uint8_t *btag = (uint8_t *) tag; 649 uint16_t crc, crc_len; 650 651 crc_len = udf_rw16(tag->desc_crc_len); 652 653 /* check payload CRC if applicable */ 654 if (crc_len > 0) { 655 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 656 tag->desc_crc = udf_rw16(crc); 657 } 658 659 /* calculate TAG header checksum */ 660 udf_validate_tag_sum(blob); 661 } 662 663 /* --------------------------------------------------------------------- */ 664 665 /* 666 * XXX note the different semantics from udfclient: for FIDs it still rounds 667 * up to sectors. Use udf_fidsize() for a correct length. 668 */ 669 670 int 671 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 672 { 673 uint32_t size, tag_id, num_lb, elmsz; 674 675 tag_id = udf_rw16(dscr->tag.id); 676 677 switch (tag_id) { 678 case TAGID_LOGVOL : 679 size = sizeof(struct logvol_desc) - 1; 680 size += udf_rw32(dscr->lvd.mt_l); 681 break; 682 case TAGID_UNALLOC_SPACE : 683 elmsz = sizeof(struct extent_ad); 684 size = sizeof(struct unalloc_sp_desc) - elmsz; 685 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 686 break; 687 case TAGID_FID : 688 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 689 size = (size + 3) & ~3; 690 break; 691 case TAGID_LOGVOL_INTEGRITY : 692 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 693 size += udf_rw32(dscr->lvid.l_iu); 694 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 695 break; 696 case TAGID_SPACE_BITMAP : 697 size = sizeof(struct space_bitmap_desc) - 1; 698 size += udf_rw32(dscr->sbd.num_bytes); 699 break; 700 case TAGID_SPARING_TABLE : 701 elmsz = sizeof(struct spare_map_entry); 702 size = sizeof(struct udf_sparing_table) - elmsz; 703 size += udf_rw16(dscr->spt.rt_l) * elmsz; 704 break; 705 case TAGID_FENTRY : 706 size = sizeof(struct file_entry); 707 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 708 break; 709 case TAGID_EXTFENTRY : 710 size = sizeof(struct extfile_entry); 711 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 712 break; 713 case TAGID_FSD : 714 size = sizeof(struct fileset_desc); 715 break; 716 default : 717 size = sizeof(union dscrptr); 718 break; 719 } 720 721 if ((size == 0) || (lb_size == 0)) 722 return 0; 723 724 if (lb_size == 1) 725 return size; 726 727 /* round up in sectors */ 728 num_lb = (size + lb_size -1) / lb_size; 729 return num_lb * lb_size; 730 } 731 732 733 int 734 udf_fidsize(struct fileid_desc *fid) 735 { 736 uint32_t size; 737 738 if (udf_rw16(fid->tag.id) != TAGID_FID) 739 panic("got udf_fidsize on non FID\n"); 740 741 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 742 size = (size + 3) & ~3; 743 744 return size; 745 } 746 747 /* --------------------------------------------------------------------- */ 748 749 void 750 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 751 { 752 int ret; 753 754 mutex_enter(&udf_node->node_mutex); 755 /* wait until free */ 756 while (udf_node->i_flags & IN_LOCKED) { 757 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 758 /* TODO check if we should return error; abort */ 759 if (ret == EWOULDBLOCK) { 760 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 761 "wanted at %s:%d, previously locked at %s:%d\n", 762 udf_node, fname, lineno, 763 udf_node->lock_fname, udf_node->lock_lineno)); 764 } 765 } 766 /* grab */ 767 udf_node->i_flags |= IN_LOCKED | flag; 768 /* debug */ 769 udf_node->lock_fname = fname; 770 udf_node->lock_lineno = lineno; 771 772 mutex_exit(&udf_node->node_mutex); 773 } 774 775 776 void 777 udf_unlock_node(struct udf_node *udf_node, int flag) 778 { 779 mutex_enter(&udf_node->node_mutex); 780 udf_node->i_flags &= ~(IN_LOCKED | flag); 781 cv_broadcast(&udf_node->node_lock); 782 mutex_exit(&udf_node->node_mutex); 783 } 784 785 786 /* --------------------------------------------------------------------- */ 787 788 static int 789 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 790 { 791 int error; 792 793 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 794 (union dscrptr **) dst); 795 if (!error) { 796 /* blank terminator blocks are not allowed here */ 797 if (*dst == NULL) 798 return ENOENT; 799 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 800 error = ENOENT; 801 free(*dst, M_UDFVOLD); 802 *dst = NULL; 803 DPRINTF(VOLUMES, ("Not an anchor\n")); 804 } 805 } 806 807 return error; 808 } 809 810 811 int 812 udf_read_anchors(struct udf_mount *ump) 813 { 814 struct udf_args *args = &ump->mount_args; 815 struct mmc_trackinfo first_track; 816 struct mmc_trackinfo second_track; 817 struct mmc_trackinfo last_track; 818 struct anchor_vdp **anchorsp; 819 uint32_t track_start; 820 uint32_t track_end; 821 uint32_t positions[4]; 822 int first_tracknr, last_tracknr; 823 int error, anch, ok, first_anchor; 824 825 /* search the first and last track of the specified session */ 826 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 827 if (!error) { 828 first_track.tracknr = first_tracknr; 829 error = udf_update_trackinfo(ump, &first_track); 830 } 831 if (!error) { 832 last_track.tracknr = last_tracknr; 833 error = udf_update_trackinfo(ump, &last_track); 834 } 835 if ((!error) && (first_tracknr != last_tracknr)) { 836 second_track.tracknr = first_tracknr+1; 837 error = udf_update_trackinfo(ump, &second_track); 838 } 839 if (error) { 840 printf("UDF mount: reading disc geometry failed\n"); 841 return 0; 842 } 843 844 track_start = first_track.track_start; 845 846 /* `end' is not as straitforward as start. */ 847 track_end = last_track.track_start 848 + last_track.track_size - last_track.free_blocks - 1; 849 850 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 851 /* end of track is not straitforward here */ 852 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 853 track_end = last_track.last_recorded; 854 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 855 track_end = last_track.next_writable 856 - ump->discinfo.link_block_penalty; 857 } 858 859 /* its no use reading a blank track */ 860 first_anchor = 0; 861 if (first_track.flags & MMC_TRACKINFO_BLANK) 862 first_anchor = 1; 863 864 /* get our packet size */ 865 ump->packet_size = first_track.packet_size; 866 if (first_track.flags & MMC_TRACKINFO_BLANK) 867 ump->packet_size = second_track.packet_size; 868 869 if (ump->packet_size <= 1) { 870 /* take max, but not bigger than 64 */ 871 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 872 ump->packet_size = MIN(ump->packet_size, 64); 873 } 874 KASSERT(ump->packet_size >= 1); 875 876 /* read anchors start+256, start+512, end-256, end */ 877 positions[0] = track_start+256; 878 positions[1] = track_end-256; 879 positions[2] = track_end; 880 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 881 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 882 883 ok = 0; 884 anchorsp = ump->anchors; 885 for (anch = first_anchor; anch < 4; anch++) { 886 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 887 positions[anch])); 888 error = udf_read_anchor(ump, positions[anch], anchorsp); 889 if (!error) { 890 anchorsp++; 891 ok++; 892 } 893 } 894 895 /* VATs are only recorded on sequential media, but initialise */ 896 ump->first_possible_vat_location = track_start + 2; 897 ump->last_possible_vat_location = track_end + last_track.packet_size; 898 899 return ok; 900 } 901 902 /* --------------------------------------------------------------------- */ 903 904 /* we dont try to be smart; we just record the parts */ 905 #define UDF_UPDATE_DSCR(name, dscr) \ 906 if (name) \ 907 free(name, M_UDFVOLD); \ 908 name = dscr; 909 910 static int 911 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 912 { 913 struct part_desc *part; 914 uint16_t phys_part, raw_phys_part; 915 916 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 917 udf_rw16(dscr->tag.id))); 918 switch (udf_rw16(dscr->tag.id)) { 919 case TAGID_PRI_VOL : /* primary partition */ 920 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 921 break; 922 case TAGID_LOGVOL : /* logical volume */ 923 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 924 break; 925 case TAGID_UNALLOC_SPACE : /* unallocated space */ 926 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 927 break; 928 case TAGID_IMP_VOL : /* implementation */ 929 /* XXX do we care about multiple impl. descr ? */ 930 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 931 break; 932 case TAGID_PARTITION : /* physical partition */ 933 /* not much use if its not allocated */ 934 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 935 free(dscr, M_UDFVOLD); 936 break; 937 } 938 939 /* 940 * BUGALERT: some rogue implementations use random physical 941 * partion numbers to break other implementations so lookup 942 * the number. 943 */ 944 raw_phys_part = udf_rw16(dscr->pd.part_num); 945 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 946 part = ump->partitions[phys_part]; 947 if (part == NULL) 948 break; 949 if (udf_rw16(part->part_num) == raw_phys_part) 950 break; 951 } 952 if (phys_part == UDF_PARTITIONS) { 953 free(dscr, M_UDFVOLD); 954 return EINVAL; 955 } 956 957 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 958 break; 959 case TAGID_VOL : /* volume space extender; rare */ 960 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 961 free(dscr, M_UDFVOLD); 962 break; 963 default : 964 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 965 udf_rw16(dscr->tag.id))); 966 free(dscr, M_UDFVOLD); 967 } 968 969 return 0; 970 } 971 #undef UDF_UPDATE_DSCR 972 973 /* --------------------------------------------------------------------- */ 974 975 static int 976 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 977 { 978 union dscrptr *dscr; 979 uint32_t sector_size, dscr_size; 980 int error; 981 982 sector_size = ump->discinfo.sector_size; 983 984 /* loc is sectornr, len is in bytes */ 985 error = EIO; 986 while (len) { 987 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 988 if (error) 989 return error; 990 991 /* blank block is a terminator */ 992 if (dscr == NULL) 993 return 0; 994 995 /* TERM descriptor is a terminator */ 996 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 997 free(dscr, M_UDFVOLD); 998 return 0; 999 } 1000 1001 /* process all others */ 1002 dscr_size = udf_tagsize(dscr, sector_size); 1003 error = udf_process_vds_descriptor(ump, dscr); 1004 if (error) { 1005 free(dscr, M_UDFVOLD); 1006 break; 1007 } 1008 assert((dscr_size % sector_size) == 0); 1009 1010 len -= dscr_size; 1011 loc += dscr_size / sector_size; 1012 } 1013 1014 return error; 1015 } 1016 1017 1018 int 1019 udf_read_vds_space(struct udf_mount *ump) 1020 { 1021 /* struct udf_args *args = &ump->mount_args; */ 1022 struct anchor_vdp *anchor, *anchor2; 1023 size_t size; 1024 uint32_t main_loc, main_len; 1025 uint32_t reserve_loc, reserve_len; 1026 int error; 1027 1028 /* 1029 * read in VDS space provided by the anchors; if one descriptor read 1030 * fails, try the mirror sector. 1031 * 1032 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1033 * avoids the `compatibility features' of DirectCD that may confuse 1034 * stuff completely. 1035 */ 1036 1037 anchor = ump->anchors[0]; 1038 anchor2 = ump->anchors[1]; 1039 assert(anchor); 1040 1041 if (anchor2) { 1042 size = sizeof(struct extent_ad); 1043 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1044 anchor = anchor2; 1045 /* reserve is specified to be a literal copy of main */ 1046 } 1047 1048 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1049 main_len = udf_rw32(anchor->main_vds_ex.len); 1050 1051 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1052 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1053 1054 error = udf_read_vds_extent(ump, main_loc, main_len); 1055 if (error) { 1056 printf("UDF mount: reading in reserve VDS extent\n"); 1057 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1058 } 1059 1060 return error; 1061 } 1062 1063 /* --------------------------------------------------------------------- */ 1064 1065 /* 1066 * Read in the logical volume integrity sequence pointed to by our logical 1067 * volume descriptor. Its a sequence that can be extended using fields in the 1068 * integrity descriptor itself. On sequential media only one is found, on 1069 * rewritable media a sequence of descriptors can be found as a form of 1070 * history keeping and on non sequential write-once media the chain is vital 1071 * to allow more and more descriptors to be written. The last descriptor 1072 * written in an extent needs to claim space for a new extent. 1073 */ 1074 1075 static int 1076 udf_retrieve_lvint(struct udf_mount *ump) 1077 { 1078 union dscrptr *dscr; 1079 struct logvol_int_desc *lvint; 1080 struct udf_lvintq *trace; 1081 uint32_t lb_size, lbnum, len; 1082 int dscr_type, error, trace_len; 1083 1084 lb_size = udf_rw32(ump->logical_vol->lb_size); 1085 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1086 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1087 1088 /* clean trace */ 1089 memset(ump->lvint_trace, 0, 1090 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1091 1092 trace_len = 0; 1093 trace = ump->lvint_trace; 1094 trace->start = lbnum; 1095 trace->end = lbnum + len/lb_size; 1096 trace->pos = 0; 1097 trace->wpos = 0; 1098 1099 lvint = NULL; 1100 dscr = NULL; 1101 error = 0; 1102 while (len) { 1103 trace->pos = lbnum - trace->start; 1104 trace->wpos = trace->pos + 1; 1105 1106 /* read in our integrity descriptor */ 1107 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1108 if (!error) { 1109 if (dscr == NULL) { 1110 trace->wpos = trace->pos; 1111 break; /* empty terminates */ 1112 } 1113 dscr_type = udf_rw16(dscr->tag.id); 1114 if (dscr_type == TAGID_TERM) { 1115 trace->wpos = trace->pos; 1116 break; /* clean terminator */ 1117 } 1118 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1119 /* fatal... corrupt disc */ 1120 error = ENOENT; 1121 break; 1122 } 1123 if (lvint) 1124 free(lvint, M_UDFVOLD); 1125 lvint = &dscr->lvid; 1126 dscr = NULL; 1127 } /* else hope for the best... maybe the next is ok */ 1128 1129 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1130 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1131 1132 /* proceed sequential */ 1133 lbnum += 1; 1134 len -= lb_size; 1135 1136 /* are we linking to a new piece? */ 1137 if (dscr && lvint->next_extent.len) { 1138 len = udf_rw32(lvint->next_extent.len); 1139 lbnum = udf_rw32(lvint->next_extent.loc); 1140 1141 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1142 /* IEK! segment link full... */ 1143 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1144 error = EINVAL; 1145 } else { 1146 trace++; 1147 trace_len++; 1148 1149 trace->start = lbnum; 1150 trace->end = lbnum + len/lb_size; 1151 trace->pos = 0; 1152 trace->wpos = 0; 1153 } 1154 } 1155 } 1156 1157 /* clean up the mess, esp. when there is an error */ 1158 if (dscr) 1159 free(dscr, M_UDFVOLD); 1160 1161 if (error && lvint) { 1162 free(lvint, M_UDFVOLD); 1163 lvint = NULL; 1164 } 1165 1166 if (!lvint) 1167 error = ENOENT; 1168 1169 ump->logvol_integrity = lvint; 1170 return error; 1171 } 1172 1173 1174 static int 1175 udf_loose_lvint_history(struct udf_mount *ump) 1176 { 1177 union dscrptr **bufs, *dscr, *last_dscr; 1178 struct udf_lvintq *trace, *in_trace, *out_trace; 1179 struct logvol_int_desc *lvint; 1180 uint32_t in_ext, in_pos, in_len; 1181 uint32_t out_ext, out_wpos, out_len; 1182 uint32_t lb_size, packet_size, lb_num; 1183 uint32_t len, start; 1184 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1185 int losing; 1186 int error; 1187 1188 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1189 1190 lb_size = udf_rw32(ump->logical_vol->lb_size); 1191 packet_size = ump->data_track.packet_size; /* XXX data track */ 1192 1193 /* search smallest extent */ 1194 trace = &ump->lvint_trace[0]; 1195 minext = trace->end - trace->start; 1196 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1197 trace = &ump->lvint_trace[ext]; 1198 extlen = trace->end - trace->start; 1199 if (extlen == 0) 1200 break; 1201 minext = MIN(minext, extlen); 1202 } 1203 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1204 /* no sense wiping all */ 1205 if (losing == minext) 1206 losing--; 1207 1208 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1209 1210 /* get buffer for pieces */ 1211 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1212 1213 in_ext = 0; 1214 in_pos = losing; 1215 in_trace = &ump->lvint_trace[in_ext]; 1216 in_len = in_trace->end - in_trace->start; 1217 out_ext = 0; 1218 out_wpos = 0; 1219 out_trace = &ump->lvint_trace[out_ext]; 1220 out_len = out_trace->end - out_trace->start; 1221 1222 last_dscr = NULL; 1223 for(;;) { 1224 out_trace->pos = out_wpos; 1225 out_trace->wpos = out_trace->pos; 1226 if (in_pos >= in_len) { 1227 in_ext++; 1228 in_pos = 0; 1229 in_trace = &ump->lvint_trace[in_ext]; 1230 in_len = in_trace->end - in_trace->start; 1231 } 1232 if (out_wpos >= out_len) { 1233 out_ext++; 1234 out_wpos = 0; 1235 out_trace = &ump->lvint_trace[out_ext]; 1236 out_len = out_trace->end - out_trace->start; 1237 } 1238 /* copy overlap contents */ 1239 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1240 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1241 if (cpy_len == 0) 1242 break; 1243 1244 /* copy */ 1245 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1246 for (cnt = 0; cnt < cpy_len; cnt++) { 1247 /* read in our integrity descriptor */ 1248 lb_num = in_trace->start + in_pos + cnt; 1249 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1250 &dscr); 1251 if (error) { 1252 /* copy last one */ 1253 dscr = last_dscr; 1254 } 1255 bufs[cnt] = dscr; 1256 if (!error) { 1257 if (dscr == NULL) { 1258 out_trace->pos = out_wpos + cnt; 1259 out_trace->wpos = out_trace->pos; 1260 break; /* empty terminates */ 1261 } 1262 dscr_type = udf_rw16(dscr->tag.id); 1263 if (dscr_type == TAGID_TERM) { 1264 out_trace->pos = out_wpos + cnt; 1265 out_trace->wpos = out_trace->pos; 1266 break; /* clean terminator */ 1267 } 1268 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1269 panic( "UDF integrity sequence " 1270 "corrupted while mounted!\n"); 1271 } 1272 last_dscr = dscr; 1273 } 1274 } 1275 1276 /* patch up if first entry was on error */ 1277 if (bufs[0] == NULL) { 1278 for (cnt = 0; cnt < cpy_len; cnt++) 1279 if (bufs[cnt] != NULL) 1280 break; 1281 last_dscr = bufs[cnt]; 1282 for (; cnt > 0; cnt--) { 1283 bufs[cnt] = last_dscr; 1284 } 1285 } 1286 1287 /* glue + write out */ 1288 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1289 for (cnt = 0; cnt < cpy_len; cnt++) { 1290 lb_num = out_trace->start + out_wpos + cnt; 1291 lvint = &bufs[cnt]->lvid; 1292 1293 /* set continuation */ 1294 len = 0; 1295 start = 0; 1296 if (out_wpos + cnt == out_len) { 1297 /* get continuation */ 1298 trace = &ump->lvint_trace[out_ext+1]; 1299 len = trace->end - trace->start; 1300 start = trace->start; 1301 } 1302 lvint->next_extent.len = udf_rw32(len); 1303 lvint->next_extent.loc = udf_rw32(start); 1304 1305 lb_num = trace->start + trace->wpos; 1306 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1307 bufs[cnt], lb_num, lb_num); 1308 DPRINTFIF(VOLUMES, error, 1309 ("error writing lvint lb_num\n")); 1310 } 1311 1312 /* free non repeating descriptors */ 1313 last_dscr = NULL; 1314 for (cnt = 0; cnt < cpy_len; cnt++) { 1315 if (bufs[cnt] != last_dscr) 1316 free(bufs[cnt], M_UDFVOLD); 1317 last_dscr = bufs[cnt]; 1318 } 1319 1320 /* advance */ 1321 in_pos += cpy_len; 1322 out_wpos += cpy_len; 1323 } 1324 1325 free(bufs, M_TEMP); 1326 1327 return 0; 1328 } 1329 1330 1331 static int 1332 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1333 { 1334 struct udf_lvintq *trace; 1335 struct timeval now_v; 1336 struct timespec now_s; 1337 uint32_t sector; 1338 int logvol_integrity; 1339 int space, error; 1340 1341 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1342 1343 again: 1344 /* get free space in last chunk */ 1345 trace = ump->lvint_trace; 1346 while (trace->wpos > (trace->end - trace->start)) { 1347 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1348 "wpos = %d\n", trace->start, trace->end, 1349 trace->pos, trace->wpos)); 1350 trace++; 1351 } 1352 1353 /* check if there is space to append */ 1354 space = (trace->end - trace->start) - trace->wpos; 1355 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1356 "space = %d\n", trace->start, trace->end, trace->pos, 1357 trace->wpos, space)); 1358 1359 /* get state */ 1360 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1361 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1362 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1363 /* don't allow this logvol to be opened */ 1364 /* TODO extent LVINT space if possible */ 1365 return EROFS; 1366 } 1367 } 1368 1369 if (space < 1) { 1370 if (lvflag & UDF_APPENDONLY_LVINT) 1371 return EROFS; 1372 /* loose history by re-writing extents */ 1373 error = udf_loose_lvint_history(ump); 1374 if (error) 1375 return error; 1376 goto again; 1377 } 1378 1379 /* update our integrity descriptor to identify us and timestamp it */ 1380 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1381 microtime(&now_v); 1382 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1383 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1384 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1385 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1386 1387 /* writeout integrity descriptor */ 1388 sector = trace->start + trace->wpos; 1389 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1390 (union dscrptr *) ump->logvol_integrity, 1391 sector, sector); 1392 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1393 if (error) 1394 return error; 1395 1396 /* advance write position */ 1397 trace->wpos++; space--; 1398 if (space >= 1) { 1399 /* append terminator */ 1400 sector = trace->start + trace->wpos; 1401 error = udf_write_terminator(ump, sector); 1402 1403 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1404 } 1405 1406 space = (trace->end - trace->start) - trace->wpos; 1407 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1408 "space = %d\n", trace->start, trace->end, trace->pos, 1409 trace->wpos, space)); 1410 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1411 "successfull\n")); 1412 1413 return error; 1414 } 1415 1416 /* --------------------------------------------------------------------- */ 1417 1418 static int 1419 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1420 { 1421 union dscrptr *dscr; 1422 /* struct udf_args *args = &ump->mount_args; */ 1423 struct part_desc *partd; 1424 struct part_hdr_desc *parthdr; 1425 struct udf_bitmap *bitmap; 1426 uint32_t phys_part; 1427 uint32_t lb_num, len; 1428 int error, dscr_type; 1429 1430 /* unallocated space map */ 1431 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1432 partd = ump->partitions[phys_part]; 1433 if (partd == NULL) 1434 continue; 1435 parthdr = &partd->_impl_use.part_hdr; 1436 1437 lb_num = udf_rw32(partd->start_loc); 1438 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1439 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1440 if (len == 0) 1441 continue; 1442 1443 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1444 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1445 if (!error && dscr) { 1446 /* analyse */ 1447 dscr_type = udf_rw16(dscr->tag.id); 1448 if (dscr_type == TAGID_SPACE_BITMAP) { 1449 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1450 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1451 1452 /* fill in ump->part_unalloc_bits */ 1453 bitmap = &ump->part_unalloc_bits[phys_part]; 1454 bitmap->blob = (uint8_t *) dscr; 1455 bitmap->bits = dscr->sbd.data; 1456 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1457 bitmap->pages = NULL; /* TODO */ 1458 bitmap->data_pos = 0; 1459 bitmap->metadata_pos = 0; 1460 } else { 1461 free(dscr, M_UDFVOLD); 1462 1463 printf( "UDF mount: error reading unallocated " 1464 "space bitmap\n"); 1465 return EROFS; 1466 } 1467 } else { 1468 /* blank not allowed */ 1469 printf("UDF mount: blank unallocated space bitmap\n"); 1470 return EROFS; 1471 } 1472 } 1473 1474 /* unallocated space table (not supported) */ 1475 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1476 partd = ump->partitions[phys_part]; 1477 if (partd == NULL) 1478 continue; 1479 parthdr = &partd->_impl_use.part_hdr; 1480 1481 len = udf_rw32(parthdr->unalloc_space_table.len); 1482 if (len) { 1483 printf("UDF mount: space tables not supported\n"); 1484 return EROFS; 1485 } 1486 } 1487 1488 /* freed space map */ 1489 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1490 partd = ump->partitions[phys_part]; 1491 if (partd == NULL) 1492 continue; 1493 parthdr = &partd->_impl_use.part_hdr; 1494 1495 /* freed space map */ 1496 lb_num = udf_rw32(partd->start_loc); 1497 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1498 len = udf_rw32(parthdr->freed_space_bitmap.len); 1499 if (len == 0) 1500 continue; 1501 1502 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1503 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1504 if (!error && dscr) { 1505 /* analyse */ 1506 dscr_type = udf_rw16(dscr->tag.id); 1507 if (dscr_type == TAGID_SPACE_BITMAP) { 1508 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1509 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1510 1511 /* fill in ump->part_freed_bits */ 1512 bitmap = &ump->part_unalloc_bits[phys_part]; 1513 bitmap->blob = (uint8_t *) dscr; 1514 bitmap->bits = dscr->sbd.data; 1515 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1516 bitmap->pages = NULL; /* TODO */ 1517 bitmap->data_pos = 0; 1518 bitmap->metadata_pos = 0; 1519 } else { 1520 free(dscr, M_UDFVOLD); 1521 1522 printf( "UDF mount: error reading freed " 1523 "space bitmap\n"); 1524 return EROFS; 1525 } 1526 } else { 1527 /* blank not allowed */ 1528 printf("UDF mount: blank freed space bitmap\n"); 1529 return EROFS; 1530 } 1531 } 1532 1533 /* freed space table (not supported) */ 1534 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1535 partd = ump->partitions[phys_part]; 1536 if (partd == NULL) 1537 continue; 1538 parthdr = &partd->_impl_use.part_hdr; 1539 1540 len = udf_rw32(parthdr->freed_space_table.len); 1541 if (len) { 1542 printf("UDF mount: space tables not supported\n"); 1543 return EROFS; 1544 } 1545 } 1546 1547 return 0; 1548 } 1549 1550 1551 /* TODO implement async writeout */ 1552 int 1553 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1554 { 1555 union dscrptr *dscr; 1556 /* struct udf_args *args = &ump->mount_args; */ 1557 struct part_desc *partd; 1558 struct part_hdr_desc *parthdr; 1559 uint32_t phys_part; 1560 uint32_t lb_num, len, ptov; 1561 int error_all, error; 1562 1563 error_all = 0; 1564 /* unallocated space map */ 1565 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1566 partd = ump->partitions[phys_part]; 1567 if (partd == NULL) 1568 continue; 1569 parthdr = &partd->_impl_use.part_hdr; 1570 1571 ptov = udf_rw32(partd->start_loc); 1572 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1573 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1574 if (len == 0) 1575 continue; 1576 1577 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1578 lb_num + ptov)); 1579 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1580 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1581 (union dscrptr *) dscr, 1582 ptov + lb_num, lb_num); 1583 if (error) { 1584 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1585 error_all = error; 1586 } 1587 } 1588 1589 /* freed space map */ 1590 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1591 partd = ump->partitions[phys_part]; 1592 if (partd == NULL) 1593 continue; 1594 parthdr = &partd->_impl_use.part_hdr; 1595 1596 /* freed space map */ 1597 ptov = udf_rw32(partd->start_loc); 1598 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1599 len = udf_rw32(parthdr->freed_space_bitmap.len); 1600 if (len == 0) 1601 continue; 1602 1603 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1604 lb_num + ptov)); 1605 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1606 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1607 (union dscrptr *) dscr, 1608 ptov + lb_num, lb_num); 1609 if (error) { 1610 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1611 error_all = error; 1612 } 1613 } 1614 1615 return error_all; 1616 } 1617 1618 1619 static int 1620 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1621 { 1622 struct udf_node *bitmap_node; 1623 union dscrptr *dscr; 1624 struct udf_bitmap *bitmap; 1625 uint64_t inflen; 1626 int error, dscr_type; 1627 1628 bitmap_node = ump->metadatabitmap_node; 1629 1630 /* only read in when metadata bitmap node is read in */ 1631 if (bitmap_node == NULL) 1632 return 0; 1633 1634 if (bitmap_node->fe) { 1635 inflen = udf_rw64(bitmap_node->fe->inf_len); 1636 } else { 1637 KASSERT(bitmap_node->efe); 1638 inflen = udf_rw64(bitmap_node->efe->inf_len); 1639 } 1640 1641 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1642 "%"PRIu64" bytes\n", inflen)); 1643 1644 /* allocate space for bitmap */ 1645 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1646 if (!dscr) 1647 return ENOMEM; 1648 1649 /* set vnode type to regular file or we can't read from it! */ 1650 bitmap_node->vnode->v_type = VREG; 1651 1652 /* read in complete metadata bitmap file */ 1653 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1654 dscr, 1655 inflen, 0, 1656 UIO_SYSSPACE, 1657 IO_SYNC | IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1658 NULL, NULL); 1659 if (error) { 1660 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1661 goto errorout; 1662 } 1663 1664 /* analyse */ 1665 dscr_type = udf_rw16(dscr->tag.id); 1666 if (dscr_type == TAGID_SPACE_BITMAP) { 1667 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1668 ump->metadata_unalloc_dscr = &dscr->sbd; 1669 1670 /* fill in bitmap bits */ 1671 bitmap = &ump->metadata_unalloc_bits; 1672 bitmap->blob = (uint8_t *) dscr; 1673 bitmap->bits = dscr->sbd.data; 1674 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1675 bitmap->pages = NULL; /* TODO */ 1676 bitmap->data_pos = 0; 1677 bitmap->metadata_pos = 0; 1678 } else { 1679 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1680 goto errorout; 1681 } 1682 1683 return 0; 1684 1685 errorout: 1686 free(dscr, M_UDFVOLD); 1687 printf( "UDF mount: error reading unallocated " 1688 "space bitmap for metadata partition\n"); 1689 return EROFS; 1690 } 1691 1692 1693 int 1694 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1695 { 1696 struct udf_node *bitmap_node; 1697 union dscrptr *dscr; 1698 uint64_t inflen, new_inflen; 1699 int dummy, error; 1700 1701 bitmap_node = ump->metadatabitmap_node; 1702 1703 /* only write out when metadata bitmap node is known */ 1704 if (bitmap_node == NULL) 1705 return 0; 1706 1707 if (bitmap_node->fe) { 1708 inflen = udf_rw64(bitmap_node->fe->inf_len); 1709 } else { 1710 KASSERT(bitmap_node->efe); 1711 inflen = udf_rw64(bitmap_node->efe->inf_len); 1712 } 1713 1714 /* reduce length to zero */ 1715 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1716 new_inflen = udf_tagsize(dscr, 1); 1717 1718 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap from " 1719 "%"PRIu64" to %"PRIu64" bytes\n", inflen, new_inflen)); 1720 1721 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1722 if (error) 1723 printf("Error resizing metadata space bitmap\n"); 1724 1725 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1726 dscr, 1727 new_inflen, 0, 1728 UIO_SYSSPACE, 1729 IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1730 NULL, NULL); 1731 1732 bitmap_node->i_flags |= IN_MODIFIED; 1733 vflushbuf(bitmap_node->vnode, 1 /* sync */); 1734 1735 error = VOP_FSYNC(bitmap_node->vnode, 1736 FSCRED, FSYNC_WAIT, 0, 0); 1737 1738 if (error) 1739 printf( "Error writing out metadata partition unalloced " 1740 "space bitmap!\n"); 1741 1742 return error; 1743 } 1744 1745 1746 /* --------------------------------------------------------------------- */ 1747 1748 /* 1749 * Checks if ump's vds information is correct and complete 1750 */ 1751 1752 int 1753 udf_process_vds(struct udf_mount *ump) { 1754 union udf_pmap *mapping; 1755 /* struct udf_args *args = &ump->mount_args; */ 1756 struct logvol_int_desc *lvint; 1757 struct udf_logvol_info *lvinfo; 1758 struct part_desc *part; 1759 uint32_t n_pm, mt_l; 1760 uint8_t *pmap_pos; 1761 char *domain_name, *map_name; 1762 const char *check_name; 1763 char bits[128]; 1764 int pmap_stype, pmap_size; 1765 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1766 int n_phys, n_virt, n_spar, n_meta; 1767 int len, error; 1768 1769 if (ump == NULL) 1770 return ENOENT; 1771 1772 /* we need at least an anchor (trivial, but for safety) */ 1773 if (ump->anchors[0] == NULL) 1774 return EINVAL; 1775 1776 /* we need at least one primary and one logical volume descriptor */ 1777 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1778 return EINVAL; 1779 1780 /* we need at least one partition descriptor */ 1781 if (ump->partitions[0] == NULL) 1782 return EINVAL; 1783 1784 /* check logical volume sector size verses device sector size */ 1785 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1786 printf("UDF mount: format violation, lb_size != sector size\n"); 1787 return EINVAL; 1788 } 1789 1790 /* check domain name */ 1791 domain_name = ump->logical_vol->domain_id.id; 1792 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1793 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1794 return EINVAL; 1795 } 1796 1797 /* retrieve logical volume integrity sequence */ 1798 error = udf_retrieve_lvint(ump); 1799 1800 /* 1801 * We need at least one logvol integrity descriptor recorded. Note 1802 * that its OK to have an open logical volume integrity here. The VAT 1803 * will close/update the integrity. 1804 */ 1805 if (ump->logvol_integrity == NULL) 1806 return EINVAL; 1807 1808 /* process derived structures */ 1809 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1810 lvint = ump->logvol_integrity; 1811 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1812 ump->logvol_info = lvinfo; 1813 1814 /* TODO check udf versions? */ 1815 1816 /* 1817 * check logvol mappings: effective virt->log partmap translation 1818 * check and recording of the mapping results. Saves expensive 1819 * strncmp() in tight places. 1820 */ 1821 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1822 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1823 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1824 pmap_pos = ump->logical_vol->maps; 1825 1826 if (n_pm > UDF_PMAPS) { 1827 printf("UDF mount: too many mappings\n"); 1828 return EINVAL; 1829 } 1830 1831 /* count types and set partition numbers */ 1832 ump->data_part = ump->node_part = ump->fids_part = 0; 1833 n_phys = n_virt = n_spar = n_meta = 0; 1834 for (log_part = 0; log_part < n_pm; log_part++) { 1835 mapping = (union udf_pmap *) pmap_pos; 1836 pmap_stype = pmap_pos[0]; 1837 pmap_size = pmap_pos[1]; 1838 switch (pmap_stype) { 1839 case 1: /* physical mapping */ 1840 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1841 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1842 pmap_type = UDF_VTOP_TYPE_PHYS; 1843 n_phys++; 1844 ump->data_part = log_part; 1845 ump->node_part = log_part; 1846 ump->fids_part = log_part; 1847 break; 1848 case 2: /* virtual/sparable/meta mapping */ 1849 map_name = mapping->pm2.part_id.id; 1850 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1851 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1852 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1853 len = UDF_REGID_ID_SIZE; 1854 1855 check_name = "*UDF Virtual Partition"; 1856 if (strncmp(map_name, check_name, len) == 0) { 1857 pmap_type = UDF_VTOP_TYPE_VIRT; 1858 n_virt++; 1859 ump->node_part = log_part; 1860 break; 1861 } 1862 check_name = "*UDF Sparable Partition"; 1863 if (strncmp(map_name, check_name, len) == 0) { 1864 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1865 n_spar++; 1866 ump->data_part = log_part; 1867 ump->node_part = log_part; 1868 ump->fids_part = log_part; 1869 break; 1870 } 1871 check_name = "*UDF Metadata Partition"; 1872 if (strncmp(map_name, check_name, len) == 0) { 1873 pmap_type = UDF_VTOP_TYPE_META; 1874 n_meta++; 1875 ump->node_part = log_part; 1876 ump->fids_part = log_part; 1877 break; 1878 } 1879 break; 1880 default: 1881 return EINVAL; 1882 } 1883 1884 /* 1885 * BUGALERT: some rogue implementations use random physical 1886 * partion numbers to break other implementations so lookup 1887 * the number. 1888 */ 1889 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1890 part = ump->partitions[phys_part]; 1891 if (part == NULL) 1892 continue; 1893 if (udf_rw16(part->part_num) == raw_phys_part) 1894 break; 1895 } 1896 1897 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1898 raw_phys_part, phys_part, pmap_type)); 1899 1900 if (phys_part == UDF_PARTITIONS) 1901 return EINVAL; 1902 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1903 return EINVAL; 1904 1905 ump->vtop [log_part] = phys_part; 1906 ump->vtop_tp[log_part] = pmap_type; 1907 1908 pmap_pos += pmap_size; 1909 } 1910 /* not winning the beauty contest */ 1911 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1912 1913 /* test some basic UDF assertions/requirements */ 1914 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1915 return EINVAL; 1916 1917 if (n_virt) { 1918 if ((n_phys == 0) || n_spar || n_meta) 1919 return EINVAL; 1920 } 1921 if (n_spar + n_phys == 0) 1922 return EINVAL; 1923 1924 /* select allocation type for each logical partition */ 1925 for (log_part = 0; log_part < n_pm; log_part++) { 1926 maps_on = ump->vtop[log_part]; 1927 switch (ump->vtop_tp[log_part]) { 1928 case UDF_VTOP_TYPE_PHYS : 1929 assert(maps_on == log_part); 1930 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1931 break; 1932 case UDF_VTOP_TYPE_VIRT : 1933 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 1934 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1935 break; 1936 case UDF_VTOP_TYPE_SPARABLE : 1937 assert(maps_on == log_part); 1938 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1939 break; 1940 case UDF_VTOP_TYPE_META : 1941 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 1942 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1943 /* special case for UDF 2.60 */ 1944 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 1945 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1946 } 1947 break; 1948 default: 1949 panic("bad alloction type in udf's ump->vtop\n"); 1950 } 1951 } 1952 1953 /* determine logical volume open/closure actions */ 1954 if (n_virt) { 1955 ump->lvopen = 0; 1956 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1957 ump->lvopen |= UDF_OPEN_SESSION ; 1958 ump->lvclose = UDF_WRITE_VAT; 1959 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1960 ump->lvclose |= UDF_CLOSE_SESSION; 1961 } else { 1962 /* `normal' rewritable or non sequential media */ 1963 ump->lvopen = UDF_WRITE_LVINT; 1964 ump->lvclose = UDF_WRITE_LVINT; 1965 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1966 ump->lvopen |= UDF_APPENDONLY_LVINT; 1967 } 1968 1969 /* 1970 * Determine sheduler error behaviour. For virtual partions, update 1971 * the trackinfo; for sparable partitions replace a whole block on the 1972 * sparable table. Allways requeue. 1973 */ 1974 ump->lvreadwrite = 0; 1975 if (n_virt) 1976 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1977 if (n_spar) 1978 ump->lvreadwrite = UDF_REMAP_BLOCK; 1979 1980 /* 1981 * Select our sheduler 1982 */ 1983 ump->strategy = &udf_strat_rmw; 1984 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1985 ump->strategy = &udf_strat_sequential; 1986 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1987 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1988 ump->strategy = &udf_strat_direct; 1989 if (n_spar) 1990 ump->strategy = &udf_strat_rmw; 1991 1992 #if 0 1993 /* read-only access won't benefit from the other shedulers */ 1994 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 1995 ump->strategy = &udf_strat_direct; 1996 #endif 1997 1998 /* print results */ 1999 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2000 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2001 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2002 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2003 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2004 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2005 2006 snprintb(bits, sizeof(bits), UDFLOGVOL_BITS, ump->lvopen); 2007 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2008 snprintb(bits, sizeof(bits), UDFLOGVOL_BITS, ump->lvclose); 2009 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2010 snprintb(bits, sizeof(bits), UDFONERROR_BITS, ump->lvreadwrite); 2011 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2012 2013 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2014 (ump->strategy == &udf_strat_direct) ? "Direct" : 2015 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2016 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2017 2018 /* signal its OK for now */ 2019 return 0; 2020 } 2021 2022 /* --------------------------------------------------------------------- */ 2023 2024 /* 2025 * Update logical volume name in all structures that keep a record of it. We 2026 * use memmove since each of them might be specified as a source. 2027 * 2028 * Note that it doesn't update the VAT structure! 2029 */ 2030 2031 static void 2032 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2033 { 2034 struct logvol_desc *lvd = NULL; 2035 struct fileset_desc *fsd = NULL; 2036 struct udf_lv_info *lvi = NULL; 2037 2038 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2039 lvd = ump->logical_vol; 2040 fsd = ump->fileset_desc; 2041 if (ump->implementation) 2042 lvi = &ump->implementation->_impl_use.lv_info; 2043 2044 /* logvol's id might be specified as origional so use memmove here */ 2045 memmove(lvd->logvol_id, logvol_id, 128); 2046 if (fsd) 2047 memmove(fsd->logvol_id, logvol_id, 128); 2048 if (lvi) 2049 memmove(lvi->logvol_id, logvol_id, 128); 2050 } 2051 2052 /* --------------------------------------------------------------------- */ 2053 2054 void 2055 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2056 uint32_t sector) 2057 { 2058 assert(ump->logical_vol); 2059 2060 tag->id = udf_rw16(tagid); 2061 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2062 tag->cksum = 0; 2063 tag->reserved = 0; 2064 tag->serial_num = ump->logical_vol->tag.serial_num; 2065 tag->tag_loc = udf_rw32(sector); 2066 } 2067 2068 2069 uint64_t 2070 udf_advance_uniqueid(struct udf_mount *ump) 2071 { 2072 uint64_t unique_id; 2073 2074 mutex_enter(&ump->logvol_mutex); 2075 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2076 if (unique_id < 0x10) 2077 unique_id = 0x10; 2078 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2079 mutex_exit(&ump->logvol_mutex); 2080 2081 return unique_id; 2082 } 2083 2084 2085 static void 2086 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2087 { 2088 struct udf_mount *ump = udf_node->ump; 2089 uint32_t num_dirs, num_files; 2090 int udf_file_type; 2091 2092 /* get file type */ 2093 if (udf_node->fe) { 2094 udf_file_type = udf_node->fe->icbtag.file_type; 2095 } else { 2096 udf_file_type = udf_node->efe->icbtag.file_type; 2097 } 2098 2099 /* adjust file count */ 2100 mutex_enter(&ump->allocate_mutex); 2101 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2102 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2103 ump->logvol_info->num_directories = 2104 udf_rw32((num_dirs + sign)); 2105 } else { 2106 num_files = udf_rw32(ump->logvol_info->num_files); 2107 ump->logvol_info->num_files = 2108 udf_rw32((num_files + sign)); 2109 } 2110 mutex_exit(&ump->allocate_mutex); 2111 } 2112 2113 2114 void 2115 udf_osta_charset(struct charspec *charspec) 2116 { 2117 bzero(charspec, sizeof(struct charspec)); 2118 charspec->type = 0; 2119 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2120 } 2121 2122 2123 /* first call udf_set_regid and then the suffix */ 2124 void 2125 udf_set_regid(struct regid *regid, char const *name) 2126 { 2127 bzero(regid, sizeof(struct regid)); 2128 regid->flags = 0; /* not dirty and not protected */ 2129 strcpy((char *) regid->id, name); 2130 } 2131 2132 2133 void 2134 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2135 { 2136 uint16_t *ver; 2137 2138 ver = (uint16_t *) regid->id_suffix; 2139 *ver = ump->logvol_info->min_udf_readver; 2140 } 2141 2142 2143 void 2144 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2145 { 2146 uint16_t *ver; 2147 2148 ver = (uint16_t *) regid->id_suffix; 2149 *ver = ump->logvol_info->min_udf_readver; 2150 2151 regid->id_suffix[2] = 4; /* unix */ 2152 regid->id_suffix[3] = 8; /* NetBSD */ 2153 } 2154 2155 2156 void 2157 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2158 { 2159 regid->id_suffix[0] = 4; /* unix */ 2160 regid->id_suffix[1] = 8; /* NetBSD */ 2161 } 2162 2163 2164 void 2165 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2166 { 2167 regid->id_suffix[0] = APP_VERSION_MAIN; 2168 regid->id_suffix[1] = APP_VERSION_SUB; 2169 } 2170 2171 static int 2172 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2173 struct long_ad *parent, uint64_t unique_id) 2174 { 2175 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2176 int fidsize = 40; 2177 2178 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2179 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2180 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2181 fid->icb = *parent; 2182 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2183 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2184 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2185 2186 return fidsize; 2187 } 2188 2189 /* --------------------------------------------------------------------- */ 2190 2191 /* 2192 * Extended attribute support. UDF knows of 3 places for extended attributes: 2193 * 2194 * (a) inside the file's (e)fe in the length of the extended attribute area 2195 * before the allocation descriptors/filedata 2196 * 2197 * (b) in a file referenced by (e)fe->ext_attr_icb and 2198 * 2199 * (c) in the e(fe)'s associated stream directory that can hold various 2200 * sub-files. In the stream directory a few fixed named subfiles are reserved 2201 * for NT/Unix ACL's and OS/2 attributes. 2202 * 2203 * NOTE: Extended attributes are read randomly but allways written 2204 * *atomicaly*. For ACL's this interface is propably different but not known 2205 * to me yet. 2206 * 2207 * Order of extended attributes in a space : 2208 * ECMA 167 EAs 2209 * Non block aligned Implementation Use EAs 2210 * Block aligned Implementation Use EAs 2211 * Application Use EAs 2212 */ 2213 2214 static int 2215 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2216 { 2217 uint16_t *spos; 2218 2219 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2220 /* checksum valid? */ 2221 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2222 spos = (uint16_t *) implext->data; 2223 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2224 return EINVAL; 2225 } 2226 return 0; 2227 } 2228 2229 static void 2230 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2231 { 2232 uint16_t *spos; 2233 2234 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2235 /* set checksum */ 2236 spos = (uint16_t *) implext->data; 2237 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2238 } 2239 } 2240 2241 2242 int 2243 udf_extattr_search_intern(struct udf_node *node, 2244 uint32_t sattr, char const *sattrname, 2245 uint32_t *offsetp, uint32_t *lengthp) 2246 { 2247 struct extattrhdr_desc *eahdr; 2248 struct extattr_entry *attrhdr; 2249 struct impl_extattr_entry *implext; 2250 uint32_t offset, a_l, sector_size; 2251 int32_t l_ea; 2252 uint8_t *pos; 2253 int error; 2254 2255 /* get mountpoint */ 2256 sector_size = node->ump->discinfo.sector_size; 2257 2258 /* get information from fe/efe */ 2259 if (node->fe) { 2260 l_ea = udf_rw32(node->fe->l_ea); 2261 eahdr = (struct extattrhdr_desc *) node->fe->data; 2262 } else { 2263 assert(node->efe); 2264 l_ea = udf_rw32(node->efe->l_ea); 2265 eahdr = (struct extattrhdr_desc *) node->efe->data; 2266 } 2267 2268 /* something recorded here? */ 2269 if (l_ea == 0) 2270 return ENOENT; 2271 2272 /* check extended attribute tag; what to do if it fails? */ 2273 error = udf_check_tag(eahdr); 2274 if (error) 2275 return EINVAL; 2276 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2277 return EINVAL; 2278 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2279 if (error) 2280 return EINVAL; 2281 2282 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2283 2284 /* looking for Ecma-167 attributes? */ 2285 offset = sizeof(struct extattrhdr_desc); 2286 2287 /* looking for either implemenation use or application use */ 2288 if (sattr == 2048) { /* [4/48.10.8] */ 2289 offset = udf_rw32(eahdr->impl_attr_loc); 2290 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2291 return ENOENT; 2292 } 2293 if (sattr == 65536) { /* [4/48.10.9] */ 2294 offset = udf_rw32(eahdr->appl_attr_loc); 2295 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2296 return ENOENT; 2297 } 2298 2299 /* paranoia check offset and l_ea */ 2300 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2301 return EINVAL; 2302 2303 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2304 2305 /* find our extended attribute */ 2306 l_ea -= offset; 2307 pos = (uint8_t *) eahdr + offset; 2308 2309 while (l_ea >= sizeof(struct extattr_entry)) { 2310 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2311 attrhdr = (struct extattr_entry *) pos; 2312 implext = (struct impl_extattr_entry *) pos; 2313 2314 /* get complete attribute length and check for roque values */ 2315 a_l = udf_rw32(attrhdr->a_l); 2316 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2317 udf_rw32(attrhdr->type), 2318 attrhdr->subtype, a_l, l_ea)); 2319 if ((a_l == 0) || (a_l > l_ea)) 2320 return EINVAL; 2321 2322 if (attrhdr->type != sattr) 2323 goto next_attribute; 2324 2325 /* we might have found it! */ 2326 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2327 *offsetp = offset; 2328 *lengthp = a_l; 2329 return 0; /* success */ 2330 } 2331 2332 /* 2333 * Implementation use and application use extended attributes 2334 * have a name to identify. They share the same structure only 2335 * UDF implementation use extended attributes have a checksum 2336 * we need to check 2337 */ 2338 2339 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2340 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2341 /* we have found our appl/implementation attribute */ 2342 *offsetp = offset; 2343 *lengthp = a_l; 2344 return 0; /* success */ 2345 } 2346 2347 next_attribute: 2348 /* next attribute */ 2349 pos += a_l; 2350 l_ea -= a_l; 2351 offset += a_l; 2352 } 2353 /* not found */ 2354 return ENOENT; 2355 } 2356 2357 2358 static void 2359 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2360 struct extattr_entry *extattr) 2361 { 2362 struct file_entry *fe; 2363 struct extfile_entry *efe; 2364 struct extattrhdr_desc *extattrhdr; 2365 struct impl_extattr_entry *implext; 2366 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2367 uint32_t *l_eap, l_ad; 2368 uint16_t *spos; 2369 uint8_t *bpos, *data; 2370 2371 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2372 fe = &dscr->fe; 2373 data = fe->data; 2374 l_eap = &fe->l_ea; 2375 l_ad = udf_rw32(fe->l_ad); 2376 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2377 efe = &dscr->efe; 2378 data = efe->data; 2379 l_eap = &efe->l_ea; 2380 l_ad = udf_rw32(efe->l_ad); 2381 } else { 2382 panic("Bad tag passed to udf_extattr_insert_internal"); 2383 } 2384 2385 /* can't append already written to file descriptors yet */ 2386 assert(l_ad == 0); 2387 2388 /* should have a header! */ 2389 extattrhdr = (struct extattrhdr_desc *) data; 2390 l_ea = udf_rw32(*l_eap); 2391 if (l_ea == 0) { 2392 /* create empty extended attribute header */ 2393 exthdr_len = sizeof(struct extattrhdr_desc); 2394 2395 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2396 /* loc */ 0); 2397 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2398 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2399 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2400 2401 /* record extended attribute header length */ 2402 l_ea = exthdr_len; 2403 *l_eap = udf_rw32(l_ea); 2404 } 2405 2406 /* extract locations */ 2407 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2408 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2409 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2410 impl_attr_loc = l_ea; 2411 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2412 appl_attr_loc = l_ea; 2413 2414 /* Ecma 167 EAs */ 2415 if (udf_rw32(extattr->type) < 2048) { 2416 assert(impl_attr_loc == l_ea); 2417 assert(appl_attr_loc == l_ea); 2418 } 2419 2420 /* implementation use extended attributes */ 2421 if (udf_rw32(extattr->type) == 2048) { 2422 assert(appl_attr_loc == l_ea); 2423 2424 /* calculate and write extended attribute header checksum */ 2425 implext = (struct impl_extattr_entry *) extattr; 2426 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2427 spos = (uint16_t *) implext->data; 2428 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2429 } 2430 2431 /* application use extended attributes */ 2432 assert(udf_rw32(extattr->type) != 65536); 2433 assert(appl_attr_loc == l_ea); 2434 2435 /* append the attribute at the end of the current space */ 2436 bpos = data + udf_rw32(*l_eap); 2437 a_l = udf_rw32(extattr->a_l); 2438 2439 /* update impl. attribute locations */ 2440 if (udf_rw32(extattr->type) < 2048) { 2441 impl_attr_loc = l_ea + a_l; 2442 appl_attr_loc = l_ea + a_l; 2443 } 2444 if (udf_rw32(extattr->type) == 2048) { 2445 appl_attr_loc = l_ea + a_l; 2446 } 2447 2448 /* copy and advance */ 2449 memcpy(bpos, extattr, a_l); 2450 l_ea += a_l; 2451 *l_eap = udf_rw32(l_ea); 2452 2453 /* do the `dance` again backwards */ 2454 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2455 if (impl_attr_loc == l_ea) 2456 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2457 if (appl_attr_loc == l_ea) 2458 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2459 } 2460 2461 /* store offsets */ 2462 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2463 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2464 } 2465 2466 2467 /* --------------------------------------------------------------------- */ 2468 2469 static int 2470 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2471 { 2472 struct udf_mount *ump; 2473 struct udf_logvol_info *lvinfo; 2474 struct impl_extattr_entry *implext; 2475 struct vatlvext_extattr_entry lvext; 2476 const char *extstr = "*UDF VAT LVExtension"; 2477 uint64_t vat_uniqueid; 2478 uint32_t offset, a_l; 2479 uint8_t *ea_start, *lvextpos; 2480 int error; 2481 2482 /* get mountpoint and lvinfo */ 2483 ump = vat_node->ump; 2484 lvinfo = ump->logvol_info; 2485 2486 /* get information from fe/efe */ 2487 if (vat_node->fe) { 2488 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2489 ea_start = vat_node->fe->data; 2490 } else { 2491 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2492 ea_start = vat_node->efe->data; 2493 } 2494 2495 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2496 if (error) 2497 return error; 2498 2499 implext = (struct impl_extattr_entry *) (ea_start + offset); 2500 error = udf_impl_extattr_check(implext); 2501 if (error) 2502 return error; 2503 2504 /* paranoia */ 2505 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2506 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2507 return EINVAL; 2508 } 2509 2510 /* 2511 * we have found our "VAT LVExtension attribute. BUT due to a 2512 * bug in the specification it might not be word aligned so 2513 * copy first to avoid panics on some machines (!!) 2514 */ 2515 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2516 lvextpos = implext->data + udf_rw32(implext->iu_l); 2517 memcpy(&lvext, lvextpos, sizeof(lvext)); 2518 2519 /* check if it was updated the last time */ 2520 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2521 lvinfo->num_files = lvext.num_files; 2522 lvinfo->num_directories = lvext.num_directories; 2523 udf_update_logvolname(ump, lvext.logvol_id); 2524 } else { 2525 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2526 /* replace VAT LVExt by free space EA */ 2527 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2528 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2529 udf_calc_impl_extattr_checksum(implext); 2530 } 2531 2532 return 0; 2533 } 2534 2535 2536 static int 2537 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2538 { 2539 struct udf_mount *ump; 2540 struct udf_logvol_info *lvinfo; 2541 struct impl_extattr_entry *implext; 2542 struct vatlvext_extattr_entry lvext; 2543 const char *extstr = "*UDF VAT LVExtension"; 2544 uint64_t vat_uniqueid; 2545 uint32_t offset, a_l; 2546 uint8_t *ea_start, *lvextpos; 2547 int error; 2548 2549 /* get mountpoint and lvinfo */ 2550 ump = vat_node->ump; 2551 lvinfo = ump->logvol_info; 2552 2553 /* get information from fe/efe */ 2554 if (vat_node->fe) { 2555 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2556 ea_start = vat_node->fe->data; 2557 } else { 2558 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2559 ea_start = vat_node->efe->data; 2560 } 2561 2562 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2563 if (error) 2564 return error; 2565 /* found, it existed */ 2566 2567 /* paranoia */ 2568 implext = (struct impl_extattr_entry *) (ea_start + offset); 2569 error = udf_impl_extattr_check(implext); 2570 if (error) { 2571 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2572 return error; 2573 } 2574 /* it is correct */ 2575 2576 /* 2577 * we have found our "VAT LVExtension attribute. BUT due to a 2578 * bug in the specification it might not be word aligned so 2579 * copy first to avoid panics on some machines (!!) 2580 */ 2581 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2582 lvextpos = implext->data + udf_rw32(implext->iu_l); 2583 2584 lvext.unique_id_chk = vat_uniqueid; 2585 lvext.num_files = lvinfo->num_files; 2586 lvext.num_directories = lvinfo->num_directories; 2587 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2588 2589 memcpy(lvextpos, &lvext, sizeof(lvext)); 2590 2591 return 0; 2592 } 2593 2594 /* --------------------------------------------------------------------- */ 2595 2596 int 2597 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2598 { 2599 struct udf_mount *ump = vat_node->ump; 2600 2601 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2602 return EINVAL; 2603 2604 memcpy(blob, ump->vat_table + offset, size); 2605 return 0; 2606 } 2607 2608 int 2609 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2610 { 2611 struct udf_mount *ump = vat_node->ump; 2612 uint32_t offset_high; 2613 uint8_t *new_vat_table; 2614 2615 /* extent VAT allocation if needed */ 2616 offset_high = offset + size; 2617 if (offset_high >= ump->vat_table_alloc_len) { 2618 /* realloc */ 2619 new_vat_table = realloc(ump->vat_table, 2620 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2621 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2622 if (!new_vat_table) { 2623 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2624 return ENOMEM; 2625 } 2626 ump->vat_table = new_vat_table; 2627 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2628 } 2629 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2630 2631 memcpy(ump->vat_table + offset, blob, size); 2632 return 0; 2633 } 2634 2635 /* --------------------------------------------------------------------- */ 2636 2637 /* TODO support previous VAT location writeout */ 2638 static int 2639 udf_update_vat_descriptor(struct udf_mount *ump) 2640 { 2641 struct udf_node *vat_node = ump->vat_node; 2642 struct udf_logvol_info *lvinfo = ump->logvol_info; 2643 struct icb_tag *icbtag; 2644 struct udf_oldvat_tail *oldvat_tl; 2645 struct udf_vat *vat; 2646 uint64_t unique_id; 2647 uint32_t lb_size; 2648 uint8_t *raw_vat; 2649 int filetype, error; 2650 2651 KASSERT(vat_node); 2652 KASSERT(lvinfo); 2653 lb_size = udf_rw32(ump->logical_vol->lb_size); 2654 2655 /* get our new unique_id */ 2656 unique_id = udf_advance_uniqueid(ump); 2657 2658 /* get information from fe/efe */ 2659 if (vat_node->fe) { 2660 icbtag = &vat_node->fe->icbtag; 2661 vat_node->fe->unique_id = udf_rw64(unique_id); 2662 } else { 2663 icbtag = &vat_node->efe->icbtag; 2664 vat_node->efe->unique_id = udf_rw64(unique_id); 2665 } 2666 2667 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2668 filetype = icbtag->file_type; 2669 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2670 2671 /* allocate piece to process head or tail of VAT file */ 2672 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2673 2674 if (filetype == 0) { 2675 /* 2676 * Update "*UDF VAT LVExtension" extended attribute from the 2677 * lvint if present. 2678 */ 2679 udf_update_vat_extattr_from_lvid(vat_node); 2680 2681 /* setup identifying regid */ 2682 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2683 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2684 2685 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2686 udf_add_udf_regid(ump, &oldvat_tl->id); 2687 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2688 2689 /* write out new tail of virtual allocation table file */ 2690 error = udf_vat_write(vat_node, raw_vat, 2691 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2692 } else { 2693 /* compose the VAT2 header */ 2694 vat = (struct udf_vat *) raw_vat; 2695 memset(vat, 0, sizeof(struct udf_vat)); 2696 2697 vat->header_len = udf_rw16(152); /* as per spec */ 2698 vat->impl_use_len = udf_rw16(0); 2699 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2700 vat->prev_vat = udf_rw32(0xffffffff); 2701 vat->num_files = lvinfo->num_files; 2702 vat->num_directories = lvinfo->num_directories; 2703 vat->min_udf_readver = lvinfo->min_udf_readver; 2704 vat->min_udf_writever = lvinfo->min_udf_writever; 2705 vat->max_udf_writever = lvinfo->max_udf_writever; 2706 2707 error = udf_vat_write(vat_node, raw_vat, 2708 sizeof(struct udf_vat), 0); 2709 } 2710 free(raw_vat, M_TEMP); 2711 2712 return error; /* success! */ 2713 } 2714 2715 2716 int 2717 udf_writeout_vat(struct udf_mount *ump) 2718 { 2719 struct udf_node *vat_node = ump->vat_node; 2720 uint32_t vat_length; 2721 int error; 2722 2723 KASSERT(vat_node); 2724 2725 DPRINTF(CALL, ("udf_writeout_vat\n")); 2726 2727 mutex_enter(&ump->allocate_mutex); 2728 udf_update_vat_descriptor(ump); 2729 2730 /* write out the VAT contents ; TODO intelligent writing */ 2731 vat_length = ump->vat_table_len; 2732 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2733 ump->vat_table, ump->vat_table_len, 0, 2734 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2735 if (error) { 2736 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2737 goto out; 2738 } 2739 2740 mutex_exit(&ump->allocate_mutex); 2741 2742 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2743 error = VOP_FSYNC(ump->vat_node->vnode, 2744 FSCRED, FSYNC_WAIT, 0, 0); 2745 if (error) 2746 printf("udf_writeout_vat: error writing VAT node!\n"); 2747 out: 2748 2749 return error; 2750 } 2751 2752 /* --------------------------------------------------------------------- */ 2753 2754 /* 2755 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2756 * descriptor. If OK, read in complete VAT file. 2757 */ 2758 2759 static int 2760 udf_check_for_vat(struct udf_node *vat_node) 2761 { 2762 struct udf_mount *ump; 2763 struct icb_tag *icbtag; 2764 struct timestamp *mtime; 2765 struct udf_vat *vat; 2766 struct udf_oldvat_tail *oldvat_tl; 2767 struct udf_logvol_info *lvinfo; 2768 uint64_t unique_id; 2769 uint32_t vat_length; 2770 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2771 uint32_t sector_size; 2772 uint32_t *raw_vat; 2773 uint8_t *vat_table; 2774 char *regid_name; 2775 int filetype; 2776 int error; 2777 2778 /* vat_length is really 64 bits though impossible */ 2779 2780 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2781 if (!vat_node) 2782 return ENOENT; 2783 2784 /* get mount info */ 2785 ump = vat_node->ump; 2786 sector_size = udf_rw32(ump->logical_vol->lb_size); 2787 2788 /* check assertions */ 2789 assert(vat_node->fe || vat_node->efe); 2790 assert(ump->logvol_integrity); 2791 2792 /* set vnode type to regular file or we can't read from it! */ 2793 vat_node->vnode->v_type = VREG; 2794 2795 /* get information from fe/efe */ 2796 if (vat_node->fe) { 2797 vat_length = udf_rw64(vat_node->fe->inf_len); 2798 icbtag = &vat_node->fe->icbtag; 2799 mtime = &vat_node->fe->mtime; 2800 unique_id = udf_rw64(vat_node->fe->unique_id); 2801 } else { 2802 vat_length = udf_rw64(vat_node->efe->inf_len); 2803 icbtag = &vat_node->efe->icbtag; 2804 mtime = &vat_node->efe->mtime; 2805 unique_id = udf_rw64(vat_node->efe->unique_id); 2806 } 2807 2808 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2809 filetype = icbtag->file_type; 2810 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2811 return ENOENT; 2812 2813 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2814 2815 vat_table_alloc_len = 2816 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2817 * UDF_VAT_CHUNKSIZE; 2818 2819 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2820 M_CANFAIL | M_WAITOK); 2821 if (vat_table == NULL) { 2822 printf("allocation of %d bytes failed for VAT\n", 2823 vat_table_alloc_len); 2824 return ENOMEM; 2825 } 2826 2827 /* allocate piece to read in head or tail of VAT file */ 2828 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2829 2830 /* 2831 * check contents of the file if its the old 1.50 VAT table format. 2832 * Its notoriously broken and allthough some implementations support an 2833 * extention as defined in the UDF 1.50 errata document, its doubtfull 2834 * to be useable since a lot of implementations don't maintain it. 2835 */ 2836 lvinfo = ump->logvol_info; 2837 2838 if (filetype == 0) { 2839 /* definition */ 2840 vat_offset = 0; 2841 vat_entries = (vat_length-36)/4; 2842 2843 /* read in tail of virtual allocation table file */ 2844 error = vn_rdwr(UIO_READ, vat_node->vnode, 2845 (uint8_t *) raw_vat, 2846 sizeof(struct udf_oldvat_tail), 2847 vat_entries * 4, 2848 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2849 NULL, NULL); 2850 if (error) 2851 goto out; 2852 2853 /* check 1.50 VAT */ 2854 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2855 regid_name = (char *) oldvat_tl->id.id; 2856 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2857 if (error) { 2858 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2859 error = ENOENT; 2860 goto out; 2861 } 2862 2863 /* 2864 * update LVID from "*UDF VAT LVExtension" extended attribute 2865 * if present. 2866 */ 2867 udf_update_lvid_from_vat_extattr(vat_node); 2868 } else { 2869 /* read in head of virtual allocation table file */ 2870 error = vn_rdwr(UIO_READ, vat_node->vnode, 2871 (uint8_t *) raw_vat, 2872 sizeof(struct udf_vat), 0, 2873 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2874 NULL, NULL); 2875 if (error) 2876 goto out; 2877 2878 /* definition */ 2879 vat = (struct udf_vat *) raw_vat; 2880 vat_offset = vat->header_len; 2881 vat_entries = (vat_length - vat_offset)/4; 2882 2883 assert(lvinfo); 2884 lvinfo->num_files = vat->num_files; 2885 lvinfo->num_directories = vat->num_directories; 2886 lvinfo->min_udf_readver = vat->min_udf_readver; 2887 lvinfo->min_udf_writever = vat->min_udf_writever; 2888 lvinfo->max_udf_writever = vat->max_udf_writever; 2889 2890 udf_update_logvolname(ump, vat->logvol_id); 2891 } 2892 2893 /* read in complete VAT file */ 2894 error = vn_rdwr(UIO_READ, vat_node->vnode, 2895 vat_table, 2896 vat_length, 0, 2897 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2898 NULL, NULL); 2899 if (error) 2900 printf("read in of complete VAT file failed (error %d)\n", 2901 error); 2902 if (error) 2903 goto out; 2904 2905 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2906 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2907 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2908 ump->logvol_integrity->time = *mtime; 2909 2910 ump->vat_table_len = vat_length; 2911 ump->vat_table_alloc_len = vat_table_alloc_len; 2912 ump->vat_table = vat_table; 2913 ump->vat_offset = vat_offset; 2914 ump->vat_entries = vat_entries; 2915 ump->vat_last_free_lb = 0; /* start at beginning */ 2916 2917 out: 2918 if (error) { 2919 if (vat_table) 2920 free(vat_table, M_UDFVOLD); 2921 } 2922 free(raw_vat, M_TEMP); 2923 2924 return error; 2925 } 2926 2927 /* --------------------------------------------------------------------- */ 2928 2929 static int 2930 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2931 { 2932 struct udf_node *vat_node; 2933 struct long_ad icb_loc; 2934 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2935 int error; 2936 2937 /* mapping info not needed */ 2938 mapping = mapping; 2939 2940 vat_loc = ump->last_possible_vat_location; 2941 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2942 2943 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2944 vat_loc, early_vat_loc)); 2945 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2946 late_vat_loc = vat_loc + 1024; 2947 2948 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2949 vat_loc, early_vat_loc)); 2950 2951 /* start looking from the end of the range */ 2952 do { 2953 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2954 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2955 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2956 2957 error = udf_get_node(ump, &icb_loc, &vat_node); 2958 if (!error) { 2959 error = udf_check_for_vat(vat_node); 2960 DPRINTFIF(VOLUMES, !error, 2961 ("VAT accepted at %d\n", vat_loc)); 2962 if (!error) 2963 break; 2964 } 2965 if (vat_node) { 2966 vput(vat_node->vnode); 2967 vat_node = NULL; 2968 } 2969 vat_loc--; /* walk backwards */ 2970 } while (vat_loc >= early_vat_loc); 2971 2972 /* keep our VAT node around */ 2973 if (vat_node) { 2974 UDF_SET_SYSTEMFILE(vat_node->vnode); 2975 ump->vat_node = vat_node; 2976 } 2977 2978 return error; 2979 } 2980 2981 /* --------------------------------------------------------------------- */ 2982 2983 static int 2984 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2985 { 2986 union dscrptr *dscr; 2987 struct part_map_spare *pms = &mapping->pms; 2988 uint32_t lb_num; 2989 int spar, error; 2990 2991 /* 2992 * The partition mapping passed on to us specifies the information we 2993 * need to locate and initialise the sparable partition mapping 2994 * information we need. 2995 */ 2996 2997 DPRINTF(VOLUMES, ("Read sparable table\n")); 2998 ump->sparable_packet_size = udf_rw16(pms->packet_len); 2999 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3000 3001 for (spar = 0; spar < pms->n_st; spar++) { 3002 lb_num = pms->st_loc[spar]; 3003 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3004 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3005 if (!error && dscr) { 3006 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3007 if (ump->sparing_table) 3008 free(ump->sparing_table, M_UDFVOLD); 3009 ump->sparing_table = &dscr->spt; 3010 dscr = NULL; 3011 DPRINTF(VOLUMES, 3012 ("Sparing table accepted (%d entries)\n", 3013 udf_rw16(ump->sparing_table->rt_l))); 3014 break; /* we're done */ 3015 } 3016 } 3017 if (dscr) 3018 free(dscr, M_UDFVOLD); 3019 } 3020 3021 if (ump->sparing_table) 3022 return 0; 3023 3024 return ENOENT; 3025 } 3026 3027 /* --------------------------------------------------------------------- */ 3028 3029 static int 3030 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3031 { 3032 struct part_map_meta *pmm = &mapping->pmm; 3033 struct long_ad icb_loc; 3034 struct vnode *vp; 3035 int error; 3036 3037 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3038 icb_loc.loc.part_num = pmm->part_num; 3039 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3040 DPRINTF(VOLUMES, ("Metadata file\n")); 3041 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3042 if (ump->metadata_node) { 3043 vp = ump->metadata_node->vnode; 3044 UDF_SET_SYSTEMFILE(vp); 3045 } 3046 3047 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3048 if (icb_loc.loc.lb_num != -1) { 3049 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3050 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3051 if (ump->metadatamirror_node) { 3052 vp = ump->metadatamirror_node->vnode; 3053 UDF_SET_SYSTEMFILE(vp); 3054 } 3055 } 3056 3057 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3058 if (icb_loc.loc.lb_num != -1) { 3059 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3060 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3061 if (ump->metadatabitmap_node) { 3062 vp = ump->metadatabitmap_node->vnode; 3063 UDF_SET_SYSTEMFILE(vp); 3064 } 3065 } 3066 3067 /* if we're mounting read-only we relax the requirements */ 3068 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3069 error = EFAULT; 3070 if (ump->metadata_node) 3071 error = 0; 3072 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3073 printf( "udf mount: Metadata file not readable, " 3074 "substituting Metadata copy file\n"); 3075 ump->metadata_node = ump->metadatamirror_node; 3076 ump->metadatamirror_node = NULL; 3077 error = 0; 3078 } 3079 } else { 3080 /* mounting read/write */ 3081 /* XXX DISABLED! metadata writing is not working yet XXX */ 3082 if (error) 3083 error = EROFS; 3084 } 3085 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3086 "metadata files\n")); 3087 return error; 3088 } 3089 3090 /* --------------------------------------------------------------------- */ 3091 3092 int 3093 udf_read_vds_tables(struct udf_mount *ump) 3094 { 3095 union udf_pmap *mapping; 3096 /* struct udf_args *args = &ump->mount_args; */ 3097 uint32_t n_pm, mt_l; 3098 uint32_t log_part; 3099 uint8_t *pmap_pos; 3100 int pmap_size; 3101 int error; 3102 3103 /* Iterate (again) over the part mappings for locations */ 3104 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3105 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 3106 pmap_pos = ump->logical_vol->maps; 3107 3108 for (log_part = 0; log_part < n_pm; log_part++) { 3109 mapping = (union udf_pmap *) pmap_pos; 3110 switch (ump->vtop_tp[log_part]) { 3111 case UDF_VTOP_TYPE_PHYS : 3112 /* nothing */ 3113 break; 3114 case UDF_VTOP_TYPE_VIRT : 3115 /* search and load VAT */ 3116 error = udf_search_vat(ump, mapping); 3117 if (error) 3118 return ENOENT; 3119 break; 3120 case UDF_VTOP_TYPE_SPARABLE : 3121 /* load one of the sparable tables */ 3122 error = udf_read_sparables(ump, mapping); 3123 if (error) 3124 return ENOENT; 3125 break; 3126 case UDF_VTOP_TYPE_META : 3127 /* load the associated file descriptors */ 3128 error = udf_read_metadata_nodes(ump, mapping); 3129 if (error) 3130 return ENOENT; 3131 break; 3132 default: 3133 break; 3134 } 3135 pmap_size = pmap_pos[1]; 3136 pmap_pos += pmap_size; 3137 } 3138 3139 /* read in and check unallocated and free space info if writing */ 3140 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3141 error = udf_read_physical_partition_spacetables(ump); 3142 if (error) 3143 return error; 3144 3145 /* also read in metadata partion spacebitmap if defined */ 3146 error = udf_read_metadata_partition_spacetable(ump); 3147 return error; 3148 } 3149 3150 return 0; 3151 } 3152 3153 /* --------------------------------------------------------------------- */ 3154 3155 int 3156 udf_read_rootdirs(struct udf_mount *ump) 3157 { 3158 union dscrptr *dscr; 3159 /* struct udf_args *args = &ump->mount_args; */ 3160 struct udf_node *rootdir_node, *streamdir_node; 3161 struct long_ad fsd_loc, *dir_loc; 3162 uint32_t lb_num, dummy; 3163 uint32_t fsd_len; 3164 int dscr_type; 3165 int error; 3166 3167 /* TODO implement FSD reading in separate function like integrity? */ 3168 /* get fileset descriptor sequence */ 3169 fsd_loc = ump->logical_vol->lv_fsd_loc; 3170 fsd_len = udf_rw32(fsd_loc.len); 3171 3172 dscr = NULL; 3173 error = 0; 3174 while (fsd_len || error) { 3175 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3176 /* translate fsd_loc to lb_num */ 3177 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3178 if (error) 3179 break; 3180 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3181 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3182 /* end markers */ 3183 if (error || (dscr == NULL)) 3184 break; 3185 3186 /* analyse */ 3187 dscr_type = udf_rw16(dscr->tag.id); 3188 if (dscr_type == TAGID_TERM) 3189 break; 3190 if (dscr_type != TAGID_FSD) { 3191 free(dscr, M_UDFVOLD); 3192 return ENOENT; 3193 } 3194 3195 /* 3196 * TODO check for multiple fileset descriptors; its only 3197 * picking the last now. Also check for FSD 3198 * correctness/interpretability 3199 */ 3200 3201 /* update */ 3202 if (ump->fileset_desc) { 3203 free(ump->fileset_desc, M_UDFVOLD); 3204 } 3205 ump->fileset_desc = &dscr->fsd; 3206 dscr = NULL; 3207 3208 /* continue to the next fsd */ 3209 fsd_len -= ump->discinfo.sector_size; 3210 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3211 3212 /* follow up to fsd->next_ex (long_ad) if its not null */ 3213 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3214 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3215 fsd_loc = ump->fileset_desc->next_ex; 3216 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3217 } 3218 } 3219 if (dscr) 3220 free(dscr, M_UDFVOLD); 3221 3222 /* there has to be one */ 3223 if (ump->fileset_desc == NULL) 3224 return ENOENT; 3225 3226 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3227 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3228 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3229 3230 /* 3231 * Now the FSD is known, read in the rootdirectory and if one exists, 3232 * the system stream dir. Some files in the system streamdir are not 3233 * wanted in this implementation since they are not maintained. If 3234 * writing is enabled we'll delete these files if they exist. 3235 */ 3236 3237 rootdir_node = streamdir_node = NULL; 3238 dir_loc = NULL; 3239 3240 /* try to read in the rootdir */ 3241 dir_loc = &ump->fileset_desc->rootdir_icb; 3242 error = udf_get_node(ump, dir_loc, &rootdir_node); 3243 if (error) 3244 return ENOENT; 3245 3246 /* aparently it read in fine */ 3247 3248 /* 3249 * Try the system stream directory; not very likely in the ones we 3250 * test, but for completeness. 3251 */ 3252 dir_loc = &ump->fileset_desc->streamdir_icb; 3253 if (udf_rw32(dir_loc->len)) { 3254 printf("udf_read_rootdirs: streamdir defined "); 3255 error = udf_get_node(ump, dir_loc, &streamdir_node); 3256 if (error) { 3257 printf("but error in streamdir reading\n"); 3258 } else { 3259 printf("but ignored\n"); 3260 /* 3261 * TODO process streamdir `baddies' i.e. files we dont 3262 * want if R/W 3263 */ 3264 } 3265 } 3266 3267 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3268 3269 /* release the vnodes again; they'll be auto-recycled later */ 3270 if (streamdir_node) { 3271 vput(streamdir_node->vnode); 3272 } 3273 if (rootdir_node) { 3274 vput(rootdir_node->vnode); 3275 } 3276 3277 return 0; 3278 } 3279 3280 /* --------------------------------------------------------------------- */ 3281 3282 /* To make absolutely sure we are NOT returning zero, add one :) */ 3283 3284 long 3285 udf_calchash(struct long_ad *icbptr) 3286 { 3287 /* ought to be enough since each mountpoint has its own chain */ 3288 return udf_rw32(icbptr->loc.lb_num) + 1; 3289 } 3290 3291 3292 static struct udf_node * 3293 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3294 { 3295 struct udf_node *node; 3296 struct vnode *vp; 3297 uint32_t hashline; 3298 3299 loop: 3300 mutex_enter(&ump->ihash_lock); 3301 3302 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3303 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3304 assert(node); 3305 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3306 node->loc.loc.part_num == icbptr->loc.part_num) { 3307 vp = node->vnode; 3308 assert(vp); 3309 mutex_enter(&vp->v_interlock); 3310 mutex_exit(&ump->ihash_lock); 3311 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3312 goto loop; 3313 return node; 3314 } 3315 } 3316 mutex_exit(&ump->ihash_lock); 3317 3318 return NULL; 3319 } 3320 3321 3322 static void 3323 udf_sorted_list_insert(struct udf_node *node) 3324 { 3325 struct udf_mount *ump; 3326 struct udf_node *s_node, *last_node; 3327 uint32_t loc, s_loc; 3328 3329 ump = node->ump; 3330 last_node = NULL; /* XXX gcc */ 3331 3332 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3333 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3334 return; 3335 } 3336 3337 /* 3338 * We sort on logical block number here and not on physical block 3339 * number here. Ideally we should go for the physical block nr to get 3340 * better sync performance though this sort will ensure that packets 3341 * won't get spit up unnessisarily. 3342 */ 3343 3344 loc = udf_rw32(node->loc.loc.lb_num); 3345 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3346 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3347 if (s_loc > loc) { 3348 LIST_INSERT_BEFORE(s_node, node, sortchain); 3349 return; 3350 } 3351 last_node = s_node; 3352 } 3353 LIST_INSERT_AFTER(last_node, node, sortchain); 3354 } 3355 3356 3357 static void 3358 udf_register_node(struct udf_node *node) 3359 { 3360 struct udf_mount *ump; 3361 struct udf_node *chk; 3362 uint32_t hashline; 3363 3364 ump = node->ump; 3365 mutex_enter(&ump->ihash_lock); 3366 3367 /* add to our hash table */ 3368 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3369 #ifdef DEBUG 3370 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3371 assert(chk); 3372 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3373 chk->loc.loc.part_num == node->loc.loc.part_num) 3374 panic("Double node entered\n"); 3375 } 3376 #else 3377 chk = NULL; 3378 #endif 3379 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3380 3381 /* add to our sorted list */ 3382 udf_sorted_list_insert(node); 3383 3384 mutex_exit(&ump->ihash_lock); 3385 } 3386 3387 3388 static void 3389 udf_deregister_node(struct udf_node *node) 3390 { 3391 struct udf_mount *ump; 3392 3393 ump = node->ump; 3394 mutex_enter(&ump->ihash_lock); 3395 3396 /* from hash and sorted list */ 3397 LIST_REMOVE(node, hashchain); 3398 LIST_REMOVE(node, sortchain); 3399 3400 mutex_exit(&ump->ihash_lock); 3401 } 3402 3403 /* --------------------------------------------------------------------- */ 3404 3405 int 3406 udf_open_logvol(struct udf_mount *ump) 3407 { 3408 int logvol_integrity; 3409 int error; 3410 3411 /* already/still open? */ 3412 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3413 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3414 return 0; 3415 3416 /* can we open it ? */ 3417 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3418 return EROFS; 3419 3420 /* setup write parameters */ 3421 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3422 if ((error = udf_setup_writeparams(ump)) != 0) 3423 return error; 3424 3425 /* determine data and metadata tracks (most likely same) */ 3426 error = udf_search_writing_tracks(ump); 3427 if (error) { 3428 /* most likely lack of space */ 3429 printf("udf_open_logvol: error searching writing tracks\n"); 3430 return EROFS; 3431 } 3432 3433 /* writeout/update lvint on disc or only in memory */ 3434 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3435 if (ump->lvopen & UDF_OPEN_SESSION) { 3436 /* TODO implement writeout of VRS + VDS */ 3437 printf( "udf_open_logvol:Opening a closed session not yet " 3438 "implemented\n"); 3439 return EROFS; 3440 3441 /* determine data and metadata tracks again */ 3442 error = udf_search_writing_tracks(ump); 3443 } 3444 3445 /* mark it open */ 3446 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3447 3448 /* do we need to write it out? */ 3449 if (ump->lvopen & UDF_WRITE_LVINT) { 3450 error = udf_writeout_lvint(ump, ump->lvopen); 3451 /* if we couldn't write it mark it closed again */ 3452 if (error) { 3453 ump->logvol_integrity->integrity_type = 3454 udf_rw32(UDF_INTEGRITY_CLOSED); 3455 return error; 3456 } 3457 } 3458 3459 return 0; 3460 } 3461 3462 3463 int 3464 udf_close_logvol(struct udf_mount *ump, int mntflags) 3465 { 3466 int logvol_integrity; 3467 int error = 0, error1 = 0, error2 = 0; 3468 int n; 3469 3470 /* already/still closed? */ 3471 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3472 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3473 return 0; 3474 3475 /* writeout/update lvint or write out VAT */ 3476 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3477 if (ump->lvclose & UDF_WRITE_VAT) { 3478 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3479 3480 /* write out the VAT node */ 3481 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3482 udf_writeout_vat(ump); 3483 3484 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3485 for (n = 0; n < 16; n++) { 3486 ump->vat_node->i_flags |= IN_MODIFIED; 3487 error = VOP_FSYNC(ump->vat_node->vnode, 3488 FSCRED, FSYNC_WAIT, 0, 0); 3489 } 3490 if (error) { 3491 printf("udf_close_logvol: writeout of VAT failed\n"); 3492 return error; 3493 } 3494 } 3495 3496 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3497 /* sync writeout metadata spacetable if existing */ 3498 error1 = udf_write_metadata_partition_spacetable(ump, true); 3499 if (error1) 3500 printf( "udf_close_logvol: writeout of metadata space " 3501 "bitmap failed\n"); 3502 3503 /* sync writeout partition spacetables */ 3504 error2 = udf_write_physical_partition_spacetables(ump, true); 3505 if (error2) 3506 printf( "udf_close_logvol: writeout of space tables " 3507 "failed\n"); 3508 3509 if (error1 || error2) 3510 return (error1 | error2); 3511 3512 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3513 } 3514 3515 if (ump->lvclose & UDF_CLOSE_SESSION) { 3516 printf("TODO: Closing a session is not yet implemented\n"); 3517 return EROFS; 3518 ump->lvopen |= UDF_OPEN_SESSION; 3519 } 3520 3521 /* mark it closed */ 3522 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3523 3524 /* do we need to write out the logical volume integrity */ 3525 if (ump->lvclose & UDF_WRITE_LVINT) 3526 error = udf_writeout_lvint(ump, ump->lvopen); 3527 if (error) { 3528 /* HELP now what? mark it open again for now */ 3529 ump->logvol_integrity->integrity_type = 3530 udf_rw32(UDF_INTEGRITY_OPEN); 3531 return error; 3532 } 3533 3534 (void) udf_synchronise_caches(ump); 3535 3536 return 0; 3537 } 3538 3539 /* --------------------------------------------------------------------- */ 3540 3541 /* 3542 * Genfs interfacing 3543 * 3544 * static const struct genfs_ops udf_genfsops = { 3545 * .gop_size = genfs_size, 3546 * size of transfers 3547 * .gop_alloc = udf_gop_alloc, 3548 * allocate len bytes at offset 3549 * .gop_write = genfs_gop_write, 3550 * putpages interface code 3551 * .gop_markupdate = udf_gop_markupdate, 3552 * set update/modify flags etc. 3553 * } 3554 */ 3555 3556 /* 3557 * Genfs interface. These four functions are the only ones defined though not 3558 * documented... great.... 3559 */ 3560 3561 /* 3562 * Callback from genfs to allocate len bytes at offset off; only called when 3563 * filling up gaps in the allocation. 3564 */ 3565 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3566 static int 3567 udf_gop_alloc(struct vnode *vp, off_t off, 3568 off_t len, int flags, kauth_cred_t cred) 3569 { 3570 #if 0 3571 struct udf_node *udf_node = VTOI(vp); 3572 struct udf_mount *ump = udf_node->ump; 3573 uint32_t lb_size, num_lb; 3574 #endif 3575 3576 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3577 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3578 3579 return 0; 3580 } 3581 3582 3583 /* 3584 * callback from genfs to update our flags 3585 */ 3586 static void 3587 udf_gop_markupdate(struct vnode *vp, int flags) 3588 { 3589 struct udf_node *udf_node = VTOI(vp); 3590 u_long mask = 0; 3591 3592 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3593 mask = IN_ACCESS; 3594 } 3595 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3596 if (vp->v_type == VREG) { 3597 mask |= IN_CHANGE | IN_UPDATE; 3598 } else { 3599 mask |= IN_MODIFY; 3600 } 3601 } 3602 if (mask) { 3603 udf_node->i_flags |= mask; 3604 } 3605 } 3606 3607 3608 static const struct genfs_ops udf_genfsops = { 3609 .gop_size = genfs_size, 3610 .gop_alloc = udf_gop_alloc, 3611 .gop_write = genfs_gop_write_rwmap, 3612 .gop_markupdate = udf_gop_markupdate, 3613 }; 3614 3615 3616 /* --------------------------------------------------------------------- */ 3617 3618 int 3619 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3620 { 3621 union dscrptr *dscr; 3622 int error; 3623 3624 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3625 bzero(dscr, ump->discinfo.sector_size); 3626 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3627 3628 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3629 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3630 (void) udf_validate_tag_and_crc_sums(dscr); 3631 3632 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3633 dscr, sector, sector); 3634 3635 free(dscr, M_TEMP); 3636 3637 return error; 3638 } 3639 3640 3641 /* --------------------------------------------------------------------- */ 3642 3643 /* UDF<->unix converters */ 3644 3645 /* --------------------------------------------------------------------- */ 3646 3647 static mode_t 3648 udf_perm_to_unix_mode(uint32_t perm) 3649 { 3650 mode_t mode; 3651 3652 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3653 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3654 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3655 3656 return mode; 3657 } 3658 3659 /* --------------------------------------------------------------------- */ 3660 3661 static uint32_t 3662 unix_mode_to_udf_perm(mode_t mode) 3663 { 3664 uint32_t perm; 3665 3666 perm = ((mode & S_IRWXO) ); 3667 perm |= ((mode & S_IRWXG) << 2); 3668 perm |= ((mode & S_IRWXU) << 4); 3669 perm |= ((mode & S_IWOTH) << 3); 3670 perm |= ((mode & S_IWGRP) << 5); 3671 perm |= ((mode & S_IWUSR) << 7); 3672 3673 return perm; 3674 } 3675 3676 /* --------------------------------------------------------------------- */ 3677 3678 static uint32_t 3679 udf_icb_to_unix_filetype(uint32_t icbftype) 3680 { 3681 switch (icbftype) { 3682 case UDF_ICB_FILETYPE_DIRECTORY : 3683 case UDF_ICB_FILETYPE_STREAMDIR : 3684 return S_IFDIR; 3685 case UDF_ICB_FILETYPE_FIFO : 3686 return S_IFIFO; 3687 case UDF_ICB_FILETYPE_CHARDEVICE : 3688 return S_IFCHR; 3689 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3690 return S_IFBLK; 3691 case UDF_ICB_FILETYPE_RANDOMACCESS : 3692 case UDF_ICB_FILETYPE_REALTIME : 3693 return S_IFREG; 3694 case UDF_ICB_FILETYPE_SYMLINK : 3695 return S_IFLNK; 3696 case UDF_ICB_FILETYPE_SOCKET : 3697 return S_IFSOCK; 3698 } 3699 /* no idea what this is */ 3700 return 0; 3701 } 3702 3703 /* --------------------------------------------------------------------- */ 3704 3705 void 3706 udf_to_unix_name(char *result, int result_len, char *id, int len, 3707 struct charspec *chsp) 3708 { 3709 uint16_t *raw_name, *unix_name; 3710 uint16_t *inchp, ch; 3711 uint8_t *outchp; 3712 const char *osta_id = "OSTA Compressed Unicode"; 3713 int ucode_chars, nice_uchars, is_osta_typ0, nout; 3714 3715 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3716 unix_name = raw_name + 1024; /* split space in half */ 3717 assert(sizeof(char) == sizeof(uint8_t)); 3718 outchp = (uint8_t *) result; 3719 3720 is_osta_typ0 = (chsp->type == 0); 3721 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3722 if (is_osta_typ0) { 3723 /* TODO clean up */ 3724 *raw_name = *unix_name = 0; 3725 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3726 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3727 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3728 /* output UTF8 */ 3729 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3730 ch = *inchp; 3731 nout = wput_utf8(outchp, result_len, ch); 3732 outchp += nout; result_len -= nout; 3733 if (!ch) break; 3734 } 3735 *outchp++ = 0; 3736 } else { 3737 /* assume 8bit char length byte latin-1 */ 3738 assert(*id == 8); 3739 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 3740 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3741 } 3742 free(raw_name, M_UDFTEMP); 3743 } 3744 3745 /* --------------------------------------------------------------------- */ 3746 3747 void 3748 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3749 struct charspec *chsp) 3750 { 3751 uint16_t *raw_name; 3752 uint16_t *outchp; 3753 const char *inchp; 3754 const char *osta_id = "OSTA Compressed Unicode"; 3755 int udf_chars, is_osta_typ0, bits; 3756 size_t cnt; 3757 3758 /* allocate temporary unicode-16 buffer */ 3759 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3760 3761 /* convert utf8 to unicode-16 */ 3762 *raw_name = 0; 3763 inchp = name; 3764 outchp = raw_name; 3765 bits = 8; 3766 for (cnt = name_len, udf_chars = 0; cnt;) { 3767 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 3768 *outchp = wget_utf8(&inchp, &cnt); 3769 if (*outchp > 0xff) 3770 bits=16; 3771 outchp++; 3772 udf_chars++; 3773 } 3774 /* null terminate just in case */ 3775 *outchp++ = 0; 3776 3777 is_osta_typ0 = (chsp->type == 0); 3778 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3779 if (is_osta_typ0) { 3780 udf_chars = udf_CompressUnicode(udf_chars, bits, 3781 (unicode_t *) raw_name, 3782 (byte *) result); 3783 } else { 3784 printf("unix to udf name: no CHSP0 ?\n"); 3785 /* XXX assume 8bit char length byte latin-1 */ 3786 *result++ = 8; udf_chars = 1; 3787 strncpy(result, name + 1, name_len); 3788 udf_chars += name_len; 3789 } 3790 *result_len = udf_chars; 3791 free(raw_name, M_UDFTEMP); 3792 } 3793 3794 /* --------------------------------------------------------------------- */ 3795 3796 void 3797 udf_timestamp_to_timespec(struct udf_mount *ump, 3798 struct timestamp *timestamp, 3799 struct timespec *timespec) 3800 { 3801 struct clock_ymdhms ymdhms; 3802 uint32_t usecs, secs, nsecs; 3803 uint16_t tz; 3804 3805 /* fill in ymdhms structure from timestamp */ 3806 memset(&ymdhms, 0, sizeof(ymdhms)); 3807 ymdhms.dt_year = udf_rw16(timestamp->year); 3808 ymdhms.dt_mon = timestamp->month; 3809 ymdhms.dt_day = timestamp->day; 3810 ymdhms.dt_wday = 0; /* ? */ 3811 ymdhms.dt_hour = timestamp->hour; 3812 ymdhms.dt_min = timestamp->minute; 3813 ymdhms.dt_sec = timestamp->second; 3814 3815 secs = clock_ymdhms_to_secs(&ymdhms); 3816 usecs = timestamp->usec + 3817 100*timestamp->hund_usec + 10000*timestamp->centisec; 3818 nsecs = usecs * 1000; 3819 3820 /* 3821 * Calculate the time zone. The timezone is 12 bit signed 2's 3822 * compliment, so we gotta do some extra magic to handle it right. 3823 */ 3824 tz = udf_rw16(timestamp->type_tz); 3825 tz &= 0x0fff; /* only lower 12 bits are significant */ 3826 if (tz & 0x0800) /* sign extention */ 3827 tz |= 0xf000; 3828 3829 /* TODO check timezone conversion */ 3830 /* check if we are specified a timezone to convert */ 3831 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3832 if ((int16_t) tz != -2047) 3833 secs -= (int16_t) tz * 60; 3834 } else { 3835 secs -= ump->mount_args.gmtoff; 3836 } 3837 3838 timespec->tv_sec = secs; 3839 timespec->tv_nsec = nsecs; 3840 } 3841 3842 3843 void 3844 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3845 { 3846 struct clock_ymdhms ymdhms; 3847 uint32_t husec, usec, csec; 3848 3849 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3850 3851 usec = timespec->tv_nsec / 1000; 3852 husec = usec / 100; 3853 usec -= husec * 100; /* only 0-99 in usec */ 3854 csec = husec / 100; /* only 0-99 in csec */ 3855 husec -= csec * 100; /* only 0-99 in husec */ 3856 3857 /* set method 1 for CUT/GMT */ 3858 timestamp->type_tz = udf_rw16((1<<12) + 0); 3859 timestamp->year = udf_rw16(ymdhms.dt_year); 3860 timestamp->month = ymdhms.dt_mon; 3861 timestamp->day = ymdhms.dt_day; 3862 timestamp->hour = ymdhms.dt_hour; 3863 timestamp->minute = ymdhms.dt_min; 3864 timestamp->second = ymdhms.dt_sec; 3865 timestamp->centisec = csec; 3866 timestamp->hund_usec = husec; 3867 timestamp->usec = usec; 3868 } 3869 3870 /* --------------------------------------------------------------------- */ 3871 3872 /* 3873 * Attribute and filetypes converters with get/set pairs 3874 */ 3875 3876 uint32_t 3877 udf_getaccessmode(struct udf_node *udf_node) 3878 { 3879 struct file_entry *fe = udf_node->fe;; 3880 struct extfile_entry *efe = udf_node->efe; 3881 uint32_t udf_perm, icbftype; 3882 uint32_t mode, ftype; 3883 uint16_t icbflags; 3884 3885 UDF_LOCK_NODE(udf_node, 0); 3886 if (fe) { 3887 udf_perm = udf_rw32(fe->perm); 3888 icbftype = fe->icbtag.file_type; 3889 icbflags = udf_rw16(fe->icbtag.flags); 3890 } else { 3891 assert(udf_node->efe); 3892 udf_perm = udf_rw32(efe->perm); 3893 icbftype = efe->icbtag.file_type; 3894 icbflags = udf_rw16(efe->icbtag.flags); 3895 } 3896 3897 mode = udf_perm_to_unix_mode(udf_perm); 3898 ftype = udf_icb_to_unix_filetype(icbftype); 3899 3900 /* set suid, sgid, sticky from flags in fe/efe */ 3901 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3902 mode |= S_ISUID; 3903 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3904 mode |= S_ISGID; 3905 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3906 mode |= S_ISVTX; 3907 3908 UDF_UNLOCK_NODE(udf_node, 0); 3909 3910 return mode | ftype; 3911 } 3912 3913 3914 void 3915 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3916 { 3917 struct file_entry *fe = udf_node->fe; 3918 struct extfile_entry *efe = udf_node->efe; 3919 uint32_t udf_perm; 3920 uint16_t icbflags; 3921 3922 UDF_LOCK_NODE(udf_node, 0); 3923 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3924 if (fe) { 3925 icbflags = udf_rw16(fe->icbtag.flags); 3926 } else { 3927 icbflags = udf_rw16(efe->icbtag.flags); 3928 } 3929 3930 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3931 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3932 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3933 if (mode & S_ISUID) 3934 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3935 if (mode & S_ISGID) 3936 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3937 if (mode & S_ISVTX) 3938 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3939 3940 if (fe) { 3941 fe->perm = udf_rw32(udf_perm); 3942 fe->icbtag.flags = udf_rw16(icbflags); 3943 } else { 3944 efe->perm = udf_rw32(udf_perm); 3945 efe->icbtag.flags = udf_rw16(icbflags); 3946 } 3947 3948 UDF_UNLOCK_NODE(udf_node, 0); 3949 } 3950 3951 3952 void 3953 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3954 { 3955 struct udf_mount *ump = udf_node->ump; 3956 struct file_entry *fe = udf_node->fe; 3957 struct extfile_entry *efe = udf_node->efe; 3958 uid_t uid; 3959 gid_t gid; 3960 3961 UDF_LOCK_NODE(udf_node, 0); 3962 if (fe) { 3963 uid = (uid_t)udf_rw32(fe->uid); 3964 gid = (gid_t)udf_rw32(fe->gid); 3965 } else { 3966 assert(udf_node->efe); 3967 uid = (uid_t)udf_rw32(efe->uid); 3968 gid = (gid_t)udf_rw32(efe->gid); 3969 } 3970 3971 /* do the uid/gid translation game */ 3972 if (uid == (uid_t) -1) 3973 uid = ump->mount_args.anon_uid; 3974 if (gid == (gid_t) -1) 3975 gid = ump->mount_args.anon_gid; 3976 3977 *uidp = uid; 3978 *gidp = gid; 3979 3980 UDF_UNLOCK_NODE(udf_node, 0); 3981 } 3982 3983 3984 void 3985 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 3986 { 3987 struct udf_mount *ump = udf_node->ump; 3988 struct file_entry *fe = udf_node->fe; 3989 struct extfile_entry *efe = udf_node->efe; 3990 uid_t nobody_uid; 3991 gid_t nobody_gid; 3992 3993 UDF_LOCK_NODE(udf_node, 0); 3994 3995 /* do the uid/gid translation game */ 3996 nobody_uid = ump->mount_args.nobody_uid; 3997 nobody_gid = ump->mount_args.nobody_gid; 3998 if (uid == nobody_uid) 3999 uid = (uid_t) -1; 4000 if (gid == nobody_gid) 4001 gid = (gid_t) -1; 4002 4003 if (fe) { 4004 fe->uid = udf_rw32((uint32_t) uid); 4005 fe->gid = udf_rw32((uint32_t) gid); 4006 } else { 4007 efe->uid = udf_rw32((uint32_t) uid); 4008 efe->gid = udf_rw32((uint32_t) gid); 4009 } 4010 4011 UDF_UNLOCK_NODE(udf_node, 0); 4012 } 4013 4014 4015 /* --------------------------------------------------------------------- */ 4016 4017 4018 static int 4019 dirhash_fill(struct udf_node *dir_node) 4020 { 4021 struct vnode *dvp = dir_node->vnode; 4022 struct dirhash *dirh; 4023 struct file_entry *fe = dir_node->fe; 4024 struct extfile_entry *efe = dir_node->efe; 4025 struct fileid_desc *fid; 4026 struct dirent *dirent; 4027 uint64_t file_size, pre_diroffset, diroffset; 4028 uint32_t lb_size; 4029 int error; 4030 4031 /* make sure we have a dirhash to work on */ 4032 dirh = dir_node->dir_hash; 4033 KASSERT(dirh); 4034 KASSERT(dirh->refcnt > 0); 4035 4036 if (dirh->flags & DIRH_BROKEN) 4037 return EIO; 4038 if (dirh->flags & DIRH_COMPLETE) 4039 return 0; 4040 4041 /* make sure we have a clean dirhash to add to */ 4042 dirhash_purge_entries(dirh); 4043 4044 /* get directory filesize */ 4045 if (fe) { 4046 file_size = udf_rw64(fe->inf_len); 4047 } else { 4048 assert(efe); 4049 file_size = udf_rw64(efe->inf_len); 4050 } 4051 4052 /* allocate temporary space for fid */ 4053 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4054 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4055 4056 /* allocate temporary space for dirent */ 4057 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4058 4059 error = 0; 4060 diroffset = 0; 4061 while (diroffset < file_size) { 4062 /* transfer a new fid/dirent */ 4063 pre_diroffset = diroffset; 4064 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4065 if (error) { 4066 /* TODO what to do? continue but not add? */ 4067 dirh->flags |= DIRH_BROKEN; 4068 dirhash_purge_entries(dirh); 4069 break; 4070 } 4071 4072 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4073 /* register deleted extent for reuse */ 4074 dirhash_enter_freed(dirh, pre_diroffset, 4075 udf_fidsize(fid)); 4076 } else { 4077 /* append to the dirhash */ 4078 dirhash_enter(dirh, dirent, pre_diroffset, 4079 udf_fidsize(fid), 0); 4080 } 4081 } 4082 dirh->flags |= DIRH_COMPLETE; 4083 4084 free(fid, M_UDFTEMP); 4085 free(dirent, M_UDFTEMP); 4086 4087 return error; 4088 } 4089 4090 4091 /* --------------------------------------------------------------------- */ 4092 4093 /* 4094 * Directory read and manipulation functions. 4095 * 4096 */ 4097 4098 int 4099 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4100 struct long_ad *icb_loc, int *found) 4101 { 4102 struct udf_node *dir_node = VTOI(vp); 4103 struct dirhash *dirh; 4104 struct dirhash_entry *dirh_ep; 4105 struct fileid_desc *fid; 4106 struct dirent *dirent; 4107 uint64_t diroffset; 4108 uint32_t lb_size; 4109 int hit, error; 4110 4111 /* set default return */ 4112 *found = 0; 4113 4114 /* get our dirhash and make sure its read in */ 4115 dirhash_get(&dir_node->dir_hash); 4116 error = dirhash_fill(dir_node); 4117 if (error) { 4118 dirhash_put(dir_node->dir_hash); 4119 return error; 4120 } 4121 dirh = dir_node->dir_hash; 4122 4123 /* allocate temporary space for fid */ 4124 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4125 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4126 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4127 4128 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4129 namelen, namelen, name)); 4130 4131 /* search our dirhash hits */ 4132 memset(icb_loc, 0, sizeof(*icb_loc)); 4133 dirh_ep = NULL; 4134 for (;;) { 4135 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4136 /* if no hit, abort the search */ 4137 if (!hit) 4138 break; 4139 4140 /* check this hit */ 4141 diroffset = dirh_ep->offset; 4142 4143 /* transfer a new fid/dirent */ 4144 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4145 if (error) 4146 break; 4147 4148 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4149 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4150 4151 /* see if its our entry */ 4152 KASSERT(dirent->d_namlen == namelen); 4153 if (strncmp(dirent->d_name, name, namelen) == 0) { 4154 *found = 1; 4155 *icb_loc = fid->icb; 4156 break; 4157 } 4158 } 4159 free(fid, M_UDFTEMP); 4160 free(dirent, M_UDFTEMP); 4161 4162 dirhash_put(dir_node->dir_hash); 4163 4164 return error; 4165 } 4166 4167 /* --------------------------------------------------------------------- */ 4168 4169 static int 4170 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4171 struct long_ad *node_icb, struct long_ad *parent_icb, 4172 uint64_t parent_unique_id) 4173 { 4174 struct timespec now; 4175 struct icb_tag *icb; 4176 struct filetimes_extattr_entry *ft_extattr; 4177 uint64_t unique_id; 4178 uint32_t fidsize, lb_num; 4179 uint8_t *bpos; 4180 int crclen, attrlen; 4181 4182 lb_num = udf_rw32(node_icb->loc.lb_num); 4183 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4184 icb = &fe->icbtag; 4185 4186 /* 4187 * Always use strategy type 4 unless on WORM wich we don't support 4188 * (yet). Fill in defaults and set for internal allocation of data. 4189 */ 4190 icb->strat_type = udf_rw16(4); 4191 icb->max_num_entries = udf_rw16(1); 4192 icb->file_type = file_type; /* 8 bit */ 4193 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4194 4195 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4196 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4197 4198 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4199 4200 vfs_timestamp(&now); 4201 udf_timespec_to_timestamp(&now, &fe->atime); 4202 udf_timespec_to_timestamp(&now, &fe->attrtime); 4203 udf_timespec_to_timestamp(&now, &fe->mtime); 4204 4205 udf_set_regid(&fe->imp_id, IMPL_NAME); 4206 udf_add_impl_regid(ump, &fe->imp_id); 4207 4208 unique_id = udf_advance_uniqueid(ump); 4209 fe->unique_id = udf_rw64(unique_id); 4210 fe->l_ea = udf_rw32(0); 4211 4212 /* create extended attribute to record our creation time */ 4213 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4214 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4215 memset(ft_extattr, 0, attrlen); 4216 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4217 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4218 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4219 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4220 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4221 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4222 4223 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4224 (struct extattr_entry *) ft_extattr); 4225 free(ft_extattr, M_UDFTEMP); 4226 4227 /* if its a directory, create '..' */ 4228 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4229 fidsize = 0; 4230 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4231 fidsize = udf_create_parentfid(ump, 4232 (struct fileid_desc *) bpos, parent_icb, 4233 parent_unique_id); 4234 } 4235 4236 /* record fidlength information */ 4237 fe->inf_len = udf_rw64(fidsize); 4238 fe->l_ad = udf_rw32(fidsize); 4239 fe->logblks_rec = udf_rw64(0); /* intern */ 4240 4241 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4242 crclen += udf_rw32(fe->l_ea) + fidsize; 4243 fe->tag.desc_crc_len = udf_rw16(crclen); 4244 4245 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4246 4247 return fidsize; 4248 } 4249 4250 /* --------------------------------------------------------------------- */ 4251 4252 static int 4253 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4254 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4255 uint64_t parent_unique_id) 4256 { 4257 struct timespec now; 4258 struct icb_tag *icb; 4259 uint64_t unique_id; 4260 uint32_t fidsize, lb_num; 4261 uint8_t *bpos; 4262 int crclen; 4263 4264 lb_num = udf_rw32(node_icb->loc.lb_num); 4265 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4266 icb = &efe->icbtag; 4267 4268 /* 4269 * Always use strategy type 4 unless on WORM wich we don't support 4270 * (yet). Fill in defaults and set for internal allocation of data. 4271 */ 4272 icb->strat_type = udf_rw16(4); 4273 icb->max_num_entries = udf_rw16(1); 4274 icb->file_type = file_type; /* 8 bit */ 4275 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4276 4277 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4278 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4279 4280 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4281 4282 vfs_timestamp(&now); 4283 udf_timespec_to_timestamp(&now, &efe->ctime); 4284 udf_timespec_to_timestamp(&now, &efe->atime); 4285 udf_timespec_to_timestamp(&now, &efe->attrtime); 4286 udf_timespec_to_timestamp(&now, &efe->mtime); 4287 4288 udf_set_regid(&efe->imp_id, IMPL_NAME); 4289 udf_add_impl_regid(ump, &efe->imp_id); 4290 4291 unique_id = udf_advance_uniqueid(ump); 4292 efe->unique_id = udf_rw64(unique_id); 4293 efe->l_ea = udf_rw32(0); 4294 4295 /* if its a directory, create '..' */ 4296 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4297 fidsize = 0; 4298 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4299 fidsize = udf_create_parentfid(ump, 4300 (struct fileid_desc *) bpos, parent_icb, 4301 parent_unique_id); 4302 } 4303 4304 /* record fidlength information */ 4305 efe->obj_size = udf_rw64(fidsize); 4306 efe->inf_len = udf_rw64(fidsize); 4307 efe->l_ad = udf_rw32(fidsize); 4308 efe->logblks_rec = udf_rw64(0); /* intern */ 4309 4310 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4311 crclen += udf_rw32(efe->l_ea) + fidsize; 4312 efe->tag.desc_crc_len = udf_rw16(crclen); 4313 4314 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4315 4316 return fidsize; 4317 } 4318 4319 /* --------------------------------------------------------------------- */ 4320 4321 int 4322 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4323 struct udf_node *udf_node, struct componentname *cnp) 4324 { 4325 struct vnode *dvp = dir_node->vnode; 4326 struct dirhash *dirh; 4327 struct dirhash_entry *dirh_ep; 4328 struct file_entry *fe = dir_node->fe; 4329 struct extfile_entry *efe = dir_node->efe; 4330 struct fileid_desc *fid; 4331 struct dirent *dirent; 4332 uint64_t file_size, diroffset; 4333 uint32_t lb_size, fidsize; 4334 int found, error; 4335 char const *name = cnp->cn_nameptr; 4336 int namelen = cnp->cn_namelen; 4337 int hit, refcnt; 4338 4339 /* get our dirhash and make sure its read in */ 4340 dirhash_get(&dir_node->dir_hash); 4341 error = dirhash_fill(dir_node); 4342 if (error) { 4343 dirhash_put(dir_node->dir_hash); 4344 return error; 4345 } 4346 dirh = dir_node->dir_hash; 4347 4348 /* get directory filesize */ 4349 if (fe) { 4350 file_size = udf_rw64(fe->inf_len); 4351 } else { 4352 assert(efe); 4353 file_size = udf_rw64(efe->inf_len); 4354 } 4355 4356 /* allocate temporary space for fid */ 4357 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4358 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4359 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4360 4361 /* search our dirhash hits */ 4362 found = 0; 4363 dirh_ep = NULL; 4364 for (;;) { 4365 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4366 /* if no hit, abort the search */ 4367 if (!hit) 4368 break; 4369 4370 /* check this hit */ 4371 diroffset = dirh_ep->offset; 4372 4373 /* transfer a new fid/dirent */ 4374 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4375 if (error) 4376 break; 4377 4378 /* see if its our entry */ 4379 KASSERT(dirent->d_namlen == namelen); 4380 if (strncmp(dirent->d_name, name, namelen) == 0) { 4381 found = 1; 4382 break; 4383 } 4384 } 4385 4386 if (!found) 4387 error = ENOENT; 4388 if (error) 4389 goto error_out; 4390 4391 /* mark deleted */ 4392 fid->file_char |= UDF_FILE_CHAR_DEL; 4393 #ifdef UDF_COMPLETE_DELETE 4394 memset(&fid->icb, 0, sizeof(fid->icb)); 4395 #endif 4396 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4397 4398 /* get size of fid and compensate for the read_fid_stream advance */ 4399 fidsize = udf_fidsize(fid); 4400 diroffset -= fidsize; 4401 4402 /* write out */ 4403 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4404 fid, fidsize, diroffset, 4405 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4406 FSCRED, NULL, NULL); 4407 if (error) 4408 goto error_out; 4409 4410 /* get reference count of attached node */ 4411 if (udf_node->fe) { 4412 refcnt = udf_rw16(udf_node->fe->link_cnt); 4413 } else { 4414 KASSERT(udf_node->efe); 4415 refcnt = udf_rw16(udf_node->efe->link_cnt); 4416 } 4417 #ifdef UDF_COMPLETE_DELETE 4418 /* substract reference counter in attached node */ 4419 refcnt -= 1; 4420 if (udf_node->fe) { 4421 udf_node->fe->link_cnt = udf_rw16(refcnt); 4422 } else { 4423 udf_node->efe->link_cnt = udf_rw16(refcnt); 4424 } 4425 4426 /* prevent writeout when refcnt == 0 */ 4427 if (refcnt == 0) 4428 udf_node->i_flags |= IN_DELETED; 4429 4430 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4431 int drefcnt; 4432 4433 /* substract reference counter in directory node */ 4434 /* note subtract 2 (?) for its was also backreferenced */ 4435 if (dir_node->fe) { 4436 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4437 drefcnt -= 1; 4438 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4439 } else { 4440 KASSERT(dir_node->efe); 4441 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4442 drefcnt -= 1; 4443 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4444 } 4445 } 4446 4447 udf_node->i_flags |= IN_MODIFIED; 4448 dir_node->i_flags |= IN_MODIFIED; 4449 #endif 4450 /* if it is/was a hardlink adjust the file count */ 4451 if (refcnt > 0) 4452 udf_adjust_filecount(udf_node, -1); 4453 4454 /* remove from the dirhash */ 4455 dirhash_remove(dirh, dirent, diroffset, 4456 udf_fidsize(fid)); 4457 4458 error_out: 4459 free(fid, M_UDFTEMP); 4460 free(dirent, M_UDFTEMP); 4461 4462 dirhash_put(dir_node->dir_hash); 4463 4464 return error; 4465 } 4466 4467 /* --------------------------------------------------------------------- */ 4468 4469 /* 4470 * We are not allowed to split the fid tag itself over an logical block so 4471 * check the space remaining in the logical block. 4472 * 4473 * We try to select the smallest candidate for recycling or when none is 4474 * found, append a new one at the end of the directory. 4475 */ 4476 4477 int 4478 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4479 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4480 { 4481 struct vnode *dvp = dir_node->vnode; 4482 struct dirhash *dirh; 4483 struct dirhash_entry *dirh_ep; 4484 struct fileid_desc *fid; 4485 struct icb_tag *icbtag; 4486 struct charspec osta_charspec; 4487 struct dirent dirent; 4488 uint64_t unique_id, dir_size; 4489 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4490 uint32_t chosen_size, chosen_size_diff; 4491 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4492 int file_char, refcnt, icbflags, addr_type, hit, error; 4493 4494 /* get our dirhash and make sure its read in */ 4495 dirhash_get(&dir_node->dir_hash); 4496 error = dirhash_fill(dir_node); 4497 if (error) { 4498 dirhash_put(dir_node->dir_hash); 4499 return error; 4500 } 4501 dirh = dir_node->dir_hash; 4502 4503 /* get info */ 4504 lb_size = udf_rw32(ump->logical_vol->lb_size); 4505 udf_osta_charset(&osta_charspec); 4506 4507 if (dir_node->fe) { 4508 dir_size = udf_rw64(dir_node->fe->inf_len); 4509 icbtag = &dir_node->fe->icbtag; 4510 } else { 4511 dir_size = udf_rw64(dir_node->efe->inf_len); 4512 icbtag = &dir_node->efe->icbtag; 4513 } 4514 4515 icbflags = udf_rw16(icbtag->flags); 4516 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4517 4518 if (udf_node->fe) { 4519 unique_id = udf_rw64(udf_node->fe->unique_id); 4520 refcnt = udf_rw16(udf_node->fe->link_cnt); 4521 } else { 4522 unique_id = udf_rw64(udf_node->efe->unique_id); 4523 refcnt = udf_rw16(udf_node->efe->link_cnt); 4524 } 4525 4526 if (refcnt > 0) { 4527 unique_id = udf_advance_uniqueid(ump); 4528 udf_adjust_filecount(udf_node, 1); 4529 } 4530 4531 /* determine file characteristics */ 4532 file_char = 0; /* visible non deleted file and not stream metadata */ 4533 if (vap->va_type == VDIR) 4534 file_char = UDF_FILE_CHAR_DIR; 4535 4536 /* malloc scrap buffer */ 4537 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4538 bzero(fid, lb_size); 4539 4540 /* calculate _minimum_ fid size */ 4541 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4542 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4543 fidsize = UDF_FID_SIZE + fid->l_fi; 4544 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4545 4546 /* find position that will fit the FID */ 4547 chosen_fid_pos = dir_size; 4548 chosen_size = 0; 4549 chosen_size_diff = UINT_MAX; 4550 4551 /* shut up gcc */ 4552 dirent.d_namlen = 0; 4553 4554 /* search our dirhash hits */ 4555 error = 0; 4556 dirh_ep = NULL; 4557 for (;;) { 4558 hit = dirhash_lookup_freed(dirh, fidsize, &dirh_ep); 4559 /* if no hit, abort the search */ 4560 if (!hit) 4561 break; 4562 4563 /* check this hit for size */ 4564 this_fidsize = dirh_ep->entry_size; 4565 4566 /* check this hit */ 4567 fid_pos = dirh_ep->offset; 4568 end_fid_pos = fid_pos + this_fidsize; 4569 size_diff = this_fidsize - fidsize; 4570 lb_rest = lb_size - (end_fid_pos % lb_size); 4571 4572 #ifndef UDF_COMPLETE_DELETE 4573 /* transfer a new fid/dirent */ 4574 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4575 if (error) 4576 goto error_out; 4577 4578 /* only reuse entries that are wiped */ 4579 /* check if the len + loc are marked zero */ 4580 if (udf_rw32(fid->icb.len != 0)) 4581 continue; 4582 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4583 continue; 4584 if (udf_rw16(fid->icb.loc.part_num != 0)) 4585 continue; 4586 #endif /* UDF_COMPLETE_DELETE */ 4587 4588 /* select if not splitting the tag and its smaller */ 4589 if ((size_diff >= 0) && 4590 (size_diff < chosen_size_diff) && 4591 (lb_rest >= sizeof(struct desc_tag))) 4592 { 4593 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4594 if ((size_diff == 0) || (size_diff >= 32)) { 4595 chosen_fid_pos = fid_pos; 4596 chosen_size = this_fidsize; 4597 chosen_size_diff = size_diff; 4598 } 4599 } 4600 } 4601 4602 4603 /* extend directory if no other candidate found */ 4604 if (chosen_size == 0) { 4605 chosen_fid_pos = dir_size; 4606 chosen_size = fidsize; 4607 chosen_size_diff = 0; 4608 4609 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4610 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4611 /* pre-grow directory to see if we're to switch */ 4612 udf_grow_node(dir_node, dir_size + chosen_size); 4613 4614 icbflags = udf_rw16(icbtag->flags); 4615 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4616 } 4617 4618 /* make sure the next fid desc_tag won't be splitted */ 4619 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4620 end_fid_pos = chosen_fid_pos + chosen_size; 4621 lb_rest = lb_size - (end_fid_pos % lb_size); 4622 4623 /* pad with implementation use regid if needed */ 4624 if (lb_rest < sizeof(struct desc_tag)) 4625 chosen_size += 32; 4626 } 4627 } 4628 chosen_size_diff = chosen_size - fidsize; 4629 4630 /* populate the FID */ 4631 memset(fid, 0, lb_size); 4632 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4633 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4634 fid->file_char = file_char; 4635 fid->icb = udf_node->loc; 4636 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4637 fid->l_iu = udf_rw16(0); 4638 4639 if (chosen_size > fidsize) { 4640 /* insert implementation-use regid to space it correctly */ 4641 fid->l_iu = udf_rw16(chosen_size_diff); 4642 4643 /* set implementation use */ 4644 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4645 udf_add_impl_regid(ump, (struct regid *) fid->data); 4646 } 4647 4648 /* fill in name */ 4649 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4650 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4651 4652 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4653 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4654 4655 /* writeout FID/update parent directory */ 4656 error = vn_rdwr(UIO_WRITE, dvp, 4657 fid, chosen_size, chosen_fid_pos, 4658 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4659 FSCRED, NULL, NULL); 4660 4661 if (error) 4662 goto error_out; 4663 4664 /* add reference counter in attached node */ 4665 if (udf_node->fe) { 4666 refcnt = udf_rw16(udf_node->fe->link_cnt); 4667 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 4668 } else { 4669 KASSERT(udf_node->efe); 4670 refcnt = udf_rw16(udf_node->efe->link_cnt); 4671 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 4672 } 4673 4674 /* mark not deleted if it was... just in case, but do warn */ 4675 if (udf_node->i_flags & IN_DELETED) { 4676 printf("udf: warning, marking a file undeleted\n"); 4677 udf_node->i_flags &= ~IN_DELETED; 4678 } 4679 4680 if (file_char & UDF_FILE_CHAR_DIR) { 4681 /* add reference counter in directory node for '..' */ 4682 if (dir_node->fe) { 4683 refcnt = udf_rw16(dir_node->fe->link_cnt); 4684 refcnt++; 4685 dir_node->fe->link_cnt = udf_rw16(refcnt); 4686 } else { 4687 KASSERT(dir_node->efe); 4688 refcnt = udf_rw16(dir_node->efe->link_cnt); 4689 refcnt++; 4690 dir_node->efe->link_cnt = udf_rw16(refcnt); 4691 } 4692 } 4693 4694 /* append to the dirhash */ 4695 dirent.d_namlen = cnp->cn_namelen; 4696 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 4697 dirhash_enter(dirh, &dirent, chosen_fid_pos, 4698 udf_fidsize(fid), 1); 4699 4700 /* note updates */ 4701 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 4702 /* VN_KNOTE(udf_node, ...) */ 4703 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 4704 4705 error_out: 4706 free(fid, M_TEMP); 4707 4708 dirhash_put(dir_node->dir_hash); 4709 4710 return error; 4711 } 4712 4713 /* --------------------------------------------------------------------- */ 4714 4715 /* 4716 * Each node can have an attached streamdir node though not recursively. These 4717 * are otherwise known as named substreams/named extended attributes that have 4718 * no size limitations. 4719 * 4720 * `Normal' extended attributes are indicated with a number and are recorded 4721 * in either the fe/efe descriptor itself for small descriptors or recorded in 4722 * the attached extended attribute file. Since these spaces can get 4723 * fragmented, care ought to be taken. 4724 * 4725 * Since the size of the space reserved for allocation descriptors is limited, 4726 * there is a mechanim provided for extending this space; this is done by a 4727 * special extent to allow schrinking of the allocations without breaking the 4728 * linkage to the allocation extent descriptor. 4729 */ 4730 4731 int 4732 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 4733 struct udf_node **udf_noderes) 4734 { 4735 union dscrptr *dscr; 4736 struct udf_node *udf_node; 4737 struct vnode *nvp; 4738 struct long_ad icb_loc, last_fe_icb_loc; 4739 uint64_t file_size; 4740 uint32_t lb_size, sector, dummy; 4741 uint8_t *file_data; 4742 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 4743 int slot, eof, error; 4744 4745 DPRINTF(NODE, ("udf_get_node called\n")); 4746 *udf_noderes = udf_node = NULL; 4747 4748 /* lock to disallow simultanious creation of same udf_node */ 4749 mutex_enter(&ump->get_node_lock); 4750 4751 DPRINTF(NODE, ("\tlookup in hash table\n")); 4752 /* lookup in hash table */ 4753 assert(ump); 4754 assert(node_icb_loc); 4755 udf_node = udf_hash_lookup(ump, node_icb_loc); 4756 if (udf_node) { 4757 DPRINTF(NODE, ("\tgot it from the hash!\n")); 4758 /* vnode is returned locked */ 4759 *udf_noderes = udf_node; 4760 mutex_exit(&ump->get_node_lock); 4761 return 0; 4762 } 4763 4764 /* garbage check: translate udf_node_icb_loc to sectornr */ 4765 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 4766 if (error) { 4767 /* no use, this will fail anyway */ 4768 mutex_exit(&ump->get_node_lock); 4769 return EINVAL; 4770 } 4771 4772 /* build udf_node (do initialise!) */ 4773 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4774 memset(udf_node, 0, sizeof(struct udf_node)); 4775 4776 DPRINTF(NODE, ("\tget new vnode\n")); 4777 /* give it a vnode */ 4778 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 4779 if (error) { 4780 pool_put(&udf_node_pool, udf_node); 4781 mutex_exit(&ump->get_node_lock); 4782 return error; 4783 } 4784 4785 /* always return locked vnode */ 4786 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 4787 /* recycle vnode and unlock; simultanious will fail too */ 4788 ungetnewvnode(nvp); 4789 mutex_exit(&ump->get_node_lock); 4790 return error; 4791 } 4792 4793 /* initialise crosslinks, note location of fe/efe for hashing */ 4794 udf_node->ump = ump; 4795 udf_node->vnode = nvp; 4796 nvp->v_data = udf_node; 4797 udf_node->loc = *node_icb_loc; 4798 udf_node->lockf = 0; 4799 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4800 cv_init(&udf_node->node_lock, "udf_nlk"); 4801 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 4802 udf_node->outstanding_bufs = 0; 4803 udf_node->outstanding_nodedscr = 0; 4804 4805 if (memcmp(&udf_node->loc, &ump->fileset_desc->rootdir_icb, sizeof(struct long_ad)) == 0) 4806 nvp->v_vflag |= VV_ROOT; 4807 4808 /* insert into the hash lookup */ 4809 udf_register_node(udf_node); 4810 4811 /* safe to unlock, the entry is in the hash table, vnode is locked */ 4812 mutex_exit(&ump->get_node_lock); 4813 4814 icb_loc = *node_icb_loc; 4815 needs_indirect = 0; 4816 strat4096 = 0; 4817 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 4818 file_size = 0; 4819 file_data = NULL; 4820 lb_size = udf_rw32(ump->logical_vol->lb_size); 4821 4822 DPRINTF(NODE, ("\tstart reading descriptors\n")); 4823 do { 4824 /* try to read in fe/efe */ 4825 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4826 4827 /* blank sector marks end of sequence, check this */ 4828 if ((dscr == NULL) && (!strat4096)) 4829 error = ENOENT; 4830 4831 /* break if read error or blank sector */ 4832 if (error || (dscr == NULL)) 4833 break; 4834 4835 /* process descriptor based on the descriptor type */ 4836 dscr_type = udf_rw16(dscr->tag.id); 4837 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 4838 4839 /* if dealing with an indirect entry, follow the link */ 4840 if (dscr_type == TAGID_INDIRECTENTRY) { 4841 needs_indirect = 0; 4842 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4843 icb_loc = dscr->inde.indirect_icb; 4844 continue; 4845 } 4846 4847 /* only file entries and extended file entries allowed here */ 4848 if ((dscr_type != TAGID_FENTRY) && 4849 (dscr_type != TAGID_EXTFENTRY)) { 4850 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4851 error = ENOENT; 4852 break; 4853 } 4854 4855 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 4856 4857 /* choose this one */ 4858 last_fe_icb_loc = icb_loc; 4859 4860 /* record and process/update (ext)fentry */ 4861 file_data = NULL; 4862 if (dscr_type == TAGID_FENTRY) { 4863 if (udf_node->fe) 4864 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4865 udf_node->fe); 4866 udf_node->fe = &dscr->fe; 4867 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 4868 udf_file_type = udf_node->fe->icbtag.file_type; 4869 file_size = udf_rw64(udf_node->fe->inf_len); 4870 file_data = udf_node->fe->data; 4871 } else { 4872 if (udf_node->efe) 4873 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4874 udf_node->efe); 4875 udf_node->efe = &dscr->efe; 4876 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 4877 udf_file_type = udf_node->efe->icbtag.file_type; 4878 file_size = udf_rw64(udf_node->efe->inf_len); 4879 file_data = udf_node->efe->data; 4880 } 4881 4882 /* check recording strategy (structure) */ 4883 4884 /* 4885 * Strategy 4096 is a daisy linked chain terminating with an 4886 * unrecorded sector or a TERM descriptor. The next 4887 * descriptor is to be found in the sector that follows the 4888 * current sector. 4889 */ 4890 if (strat == 4096) { 4891 strat4096 = 1; 4892 needs_indirect = 1; 4893 4894 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 4895 } 4896 4897 /* 4898 * Strategy 4 is the normal strategy and terminates, but if 4899 * we're in strategy 4096, we can't have strategy 4 mixed in 4900 */ 4901 4902 if (strat == 4) { 4903 if (strat4096) { 4904 error = EINVAL; 4905 break; 4906 } 4907 break; /* done */ 4908 } 4909 } while (!error); 4910 4911 /* first round of cleanup code */ 4912 if (error) { 4913 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 4914 /* recycle udf_node */ 4915 udf_dispose_node(udf_node); 4916 4917 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4918 nvp->v_data = NULL; 4919 ungetnewvnode(nvp); 4920 4921 return EINVAL; /* error code ok? */ 4922 } 4923 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 4924 4925 /* assert no references to dscr anymore beyong this point */ 4926 assert((udf_node->fe) || (udf_node->efe)); 4927 dscr = NULL; 4928 4929 /* 4930 * Remember where to record an updated version of the descriptor. If 4931 * there is a sequence of indirect entries, icb_loc will have been 4932 * updated. Its the write disipline to allocate new space and to make 4933 * sure the chain is maintained. 4934 * 4935 * `needs_indirect' flags if the next location is to be filled with 4936 * with an indirect entry. 4937 */ 4938 udf_node->write_loc = icb_loc; 4939 udf_node->needs_indirect = needs_indirect; 4940 4941 /* 4942 * Go trough all allocations extents of this descriptor and when 4943 * encountering a redirect read in the allocation extension. These are 4944 * daisy-chained. 4945 */ 4946 UDF_LOCK_NODE(udf_node, 0); 4947 udf_node->num_extensions = 0; 4948 4949 error = 0; 4950 slot = 0; 4951 for (;;) { 4952 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 4953 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 4954 "lb_num = %d, part = %d\n", slot, eof, 4955 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 4956 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 4957 udf_rw32(icb_loc.loc.lb_num), 4958 udf_rw16(icb_loc.loc.part_num))); 4959 if (eof) 4960 break; 4961 slot++; 4962 4963 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 4964 continue; 4965 4966 DPRINTF(NODE, ("\tgot redirect extent\n")); 4967 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 4968 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 4969 "too many allocation extensions on " 4970 "udf_node\n")); 4971 error = EINVAL; 4972 break; 4973 } 4974 4975 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 4976 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 4977 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 4978 "extension size in udf_node\n")); 4979 error = EINVAL; 4980 break; 4981 } 4982 4983 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 4984 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 4985 /* load in allocation extent */ 4986 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4987 if (error || (dscr == NULL)) 4988 break; 4989 4990 /* process read-in descriptor */ 4991 dscr_type = udf_rw16(dscr->tag.id); 4992 4993 if (dscr_type != TAGID_ALLOCEXTENT) { 4994 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4995 error = ENOENT; 4996 break; 4997 } 4998 4999 DPRINTF(NODE, ("\trecording redirect extent\n")); 5000 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5001 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5002 5003 udf_node->num_extensions++; 5004 5005 } /* while */ 5006 UDF_UNLOCK_NODE(udf_node, 0); 5007 5008 /* second round of cleanup code */ 5009 if (error) { 5010 /* recycle udf_node */ 5011 udf_dispose_node(udf_node); 5012 5013 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5014 nvp->v_data = NULL; 5015 ungetnewvnode(nvp); 5016 5017 return EINVAL; /* error code ok? */ 5018 } 5019 5020 DPRINTF(NODE, ("\tnode read in fine\n")); 5021 5022 /* 5023 * Translate UDF filetypes into vnode types. 5024 * 5025 * Systemfiles like the meta main and mirror files are not treated as 5026 * normal files, so we type them as having no type. UDF dictates that 5027 * they are not allowed to be visible. 5028 */ 5029 5030 switch (udf_file_type) { 5031 case UDF_ICB_FILETYPE_DIRECTORY : 5032 case UDF_ICB_FILETYPE_STREAMDIR : 5033 nvp->v_type = VDIR; 5034 break; 5035 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5036 nvp->v_type = VBLK; 5037 break; 5038 case UDF_ICB_FILETYPE_CHARDEVICE : 5039 nvp->v_type = VCHR; 5040 break; 5041 case UDF_ICB_FILETYPE_SOCKET : 5042 nvp->v_type = VSOCK; 5043 break; 5044 case UDF_ICB_FILETYPE_FIFO : 5045 nvp->v_type = VFIFO; 5046 break; 5047 case UDF_ICB_FILETYPE_SYMLINK : 5048 nvp->v_type = VLNK; 5049 break; 5050 case UDF_ICB_FILETYPE_VAT : 5051 case UDF_ICB_FILETYPE_META_MAIN : 5052 case UDF_ICB_FILETYPE_META_MIRROR : 5053 nvp->v_type = VNON; 5054 break; 5055 case UDF_ICB_FILETYPE_RANDOMACCESS : 5056 case UDF_ICB_FILETYPE_REALTIME : 5057 nvp->v_type = VREG; 5058 break; 5059 default: 5060 /* YIKES, something else */ 5061 nvp->v_type = VNON; 5062 } 5063 5064 /* TODO specfs, fifofs etc etc. vnops setting */ 5065 5066 /* don't forget to set vnode's v_size */ 5067 uvm_vnp_setsize(nvp, file_size); 5068 5069 /* TODO ext attr and streamdir udf_nodes */ 5070 5071 *udf_noderes = udf_node; 5072 5073 return 0; 5074 } 5075 5076 /* --------------------------------------------------------------------- */ 5077 5078 int 5079 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5080 { 5081 union dscrptr *dscr; 5082 struct long_ad *loc; 5083 int extnr, flags, error; 5084 5085 DPRINTF(NODE, ("udf_writeout_node called\n")); 5086 5087 KASSERT(udf_node->outstanding_bufs == 0); 5088 KASSERT(udf_node->outstanding_nodedscr == 0); 5089 5090 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5091 5092 if (udf_node->i_flags & IN_DELETED) { 5093 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5094 return 0; 5095 } 5096 5097 /* lock node */ 5098 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5099 UDF_LOCK_NODE(udf_node, flags); 5100 5101 /* at least one descriptor writeout */ 5102 udf_node->outstanding_nodedscr = 1; 5103 5104 /* we're going to write out the descriptor so clear the flags */ 5105 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5106 5107 /* if we were rebuild, write out the allocation extents */ 5108 if (udf_node->i_flags & IN_NODE_REBUILD) { 5109 /* mark outstanding node descriptors and issue them */ 5110 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5111 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5112 loc = &udf_node->ext_loc[extnr]; 5113 dscr = (union dscrptr *) udf_node->ext[extnr]; 5114 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5115 if (error) 5116 return error; 5117 } 5118 /* mark allocation extents written out */ 5119 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5120 } 5121 5122 if (udf_node->fe) { 5123 KASSERT(udf_node->efe == NULL); 5124 dscr = (union dscrptr *) udf_node->fe; 5125 } else { 5126 KASSERT(udf_node->efe); 5127 KASSERT(udf_node->fe == NULL); 5128 dscr = (union dscrptr *) udf_node->efe; 5129 } 5130 KASSERT(dscr); 5131 5132 loc = &udf_node->write_loc; 5133 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5134 return error; 5135 } 5136 5137 /* --------------------------------------------------------------------- */ 5138 5139 int 5140 udf_dispose_node(struct udf_node *udf_node) 5141 { 5142 struct vnode *vp; 5143 int extnr; 5144 5145 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5146 if (!udf_node) { 5147 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5148 return 0; 5149 } 5150 5151 vp = udf_node->vnode; 5152 #ifdef DIAGNOSTIC 5153 if (vp->v_numoutput) 5154 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5155 "v_numoutput = %d", udf_node, vp->v_numoutput); 5156 #endif 5157 5158 /* wait until out of sync (just in case we happen to stumble over one */ 5159 KASSERT(!mutex_owned(&mntvnode_lock)); 5160 mutex_enter(&mntvnode_lock); 5161 while (udf_node->i_flags & IN_SYNCED) { 5162 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5163 hz/16); 5164 } 5165 mutex_exit(&mntvnode_lock); 5166 5167 /* TODO extended attributes and streamdir */ 5168 5169 /* remove dirhash if present */ 5170 dirhash_purge(&udf_node->dir_hash); 5171 5172 /* remove from our hash lookup table */ 5173 udf_deregister_node(udf_node); 5174 5175 /* destroy our lock */ 5176 mutex_destroy(&udf_node->node_mutex); 5177 cv_destroy(&udf_node->node_lock); 5178 5179 /* dissociate our udf_node from the vnode */ 5180 genfs_node_destroy(udf_node->vnode); 5181 vp->v_data = NULL; 5182 5183 /* free associated memory and the node itself */ 5184 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5185 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5186 udf_node->ext[extnr]); 5187 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5188 } 5189 5190 if (udf_node->fe) 5191 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5192 udf_node->fe); 5193 if (udf_node->efe) 5194 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5195 udf_node->efe); 5196 5197 udf_node->fe = (void *) 0xdeadaaaa; 5198 udf_node->efe = (void *) 0xdeadbbbb; 5199 udf_node->ump = (void *) 0xdeadbeef; 5200 pool_put(&udf_node_pool, udf_node); 5201 5202 return 0; 5203 } 5204 5205 5206 5207 /* 5208 * create a new node using the specified vnodeops, vap and cnp but with the 5209 * udf_file_type. This allows special files to be created. Use with care. 5210 */ 5211 5212 static int 5213 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5214 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5215 { 5216 union dscrptr *dscr; 5217 struct udf_node *dir_node = VTOI(dvp);; 5218 struct udf_node *udf_node; 5219 struct udf_mount *ump = dir_node->ump; 5220 struct vnode *nvp; 5221 struct long_ad node_icb_loc; 5222 uint64_t parent_unique_id; 5223 uint64_t lmapping; 5224 uint32_t lb_size, lb_num; 5225 uint16_t vpart_num; 5226 uid_t uid; 5227 gid_t gid, parent_gid; 5228 int fid_size, error; 5229 5230 lb_size = udf_rw32(ump->logical_vol->lb_size); 5231 *vpp = NULL; 5232 5233 /* allocate vnode */ 5234 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5235 if (error) 5236 return error; 5237 5238 /* lock node */ 5239 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5240 if (error) { 5241 nvp->v_data = NULL; 5242 ungetnewvnode(nvp); 5243 return error; 5244 } 5245 5246 /* get disc allocation for one logical block */ 5247 vpart_num = ump->node_part; 5248 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5249 vpart_num, &lmapping); 5250 lb_num = lmapping; 5251 if (error) { 5252 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5253 ungetnewvnode(nvp); 5254 return error; 5255 } 5256 5257 /* initialise pointer to location */ 5258 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5259 node_icb_loc.len = lb_size; 5260 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5261 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5262 5263 /* build udf_node (do initialise!) */ 5264 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5265 memset(udf_node, 0, sizeof(struct udf_node)); 5266 5267 /* initialise crosslinks, note location of fe/efe for hashing */ 5268 /* bugalert: synchronise with udf_get_node() */ 5269 udf_node->ump = ump; 5270 udf_node->vnode = nvp; 5271 nvp->v_data = udf_node; 5272 udf_node->loc = node_icb_loc; 5273 udf_node->write_loc = node_icb_loc; 5274 udf_node->lockf = 0; 5275 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5276 cv_init(&udf_node->node_lock, "udf_nlk"); 5277 udf_node->outstanding_bufs = 0; 5278 udf_node->outstanding_nodedscr = 0; 5279 5280 /* initialise genfs */ 5281 genfs_node_init(nvp, &udf_genfsops); 5282 5283 /* insert into the hash lookup */ 5284 udf_register_node(udf_node); 5285 5286 /* get parent's unique ID for refering '..' if its a directory */ 5287 if (dir_node->fe) { 5288 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5289 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5290 } else { 5291 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5292 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5293 } 5294 5295 /* get descriptor */ 5296 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5297 5298 /* choose a fe or an efe for it */ 5299 if (ump->logical_vol->tag.descriptor_ver == 2) { 5300 udf_node->fe = &dscr->fe; 5301 fid_size = udf_create_new_fe(ump, udf_node->fe, 5302 udf_file_type, &udf_node->loc, 5303 &dir_node->loc, parent_unique_id); 5304 /* TODO add extended attribute for creation time */ 5305 } else { 5306 udf_node->efe = &dscr->efe; 5307 fid_size = udf_create_new_efe(ump, udf_node->efe, 5308 udf_file_type, &udf_node->loc, 5309 &dir_node->loc, parent_unique_id); 5310 } 5311 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5312 5313 /* update vnode's size and type */ 5314 nvp->v_type = vap->va_type; 5315 uvm_vnp_setsize(nvp, fid_size); 5316 5317 /* set access mode */ 5318 udf_setaccessmode(udf_node, vap->va_mode); 5319 5320 /* set ownership */ 5321 uid = kauth_cred_geteuid(cnp->cn_cred); 5322 gid = parent_gid; 5323 udf_setownership(udf_node, uid, gid); 5324 5325 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5326 if (error) { 5327 /* free disc allocation for node */ 5328 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5329 5330 /* recycle udf_node */ 5331 udf_dispose_node(udf_node); 5332 vput(nvp); 5333 5334 *vpp = NULL; 5335 return error; 5336 } 5337 5338 /* adjust file count */ 5339 udf_adjust_filecount(udf_node, 1); 5340 5341 /* return result */ 5342 *vpp = nvp; 5343 5344 return 0; 5345 } 5346 5347 5348 int 5349 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5350 struct componentname *cnp) 5351 { 5352 int (**vnodeops)(void *); 5353 int udf_file_type; 5354 5355 DPRINTF(NODE, ("udf_create_node called\n")); 5356 5357 /* what type are we creating ? */ 5358 vnodeops = udf_vnodeop_p; 5359 /* start with a default */ 5360 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5361 5362 *vpp = NULL; 5363 5364 switch (vap->va_type) { 5365 case VREG : 5366 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5367 break; 5368 case VDIR : 5369 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5370 break; 5371 case VLNK : 5372 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5373 break; 5374 case VBLK : 5375 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5376 /* specfs */ 5377 return ENOTSUP; 5378 break; 5379 case VCHR : 5380 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5381 /* specfs */ 5382 return ENOTSUP; 5383 break; 5384 case VFIFO : 5385 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5386 /* specfs */ 5387 return ENOTSUP; 5388 break; 5389 case VSOCK : 5390 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5391 /* specfs */ 5392 return ENOTSUP; 5393 break; 5394 case VNON : 5395 case VBAD : 5396 default : 5397 /* nothing; can we even create these? */ 5398 return EINVAL; 5399 } 5400 5401 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5402 } 5403 5404 /* --------------------------------------------------------------------- */ 5405 5406 static void 5407 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5408 { 5409 struct udf_mount *ump = udf_node->ump; 5410 uint32_t lb_size, lb_num, len, num_lb; 5411 uint16_t vpart_num; 5412 5413 /* is there really one? */ 5414 if (mem == NULL) 5415 return; 5416 5417 /* got a descriptor here */ 5418 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5419 lb_num = udf_rw32(loc->loc.lb_num); 5420 vpart_num = udf_rw16(loc->loc.part_num); 5421 5422 lb_size = udf_rw32(ump->logical_vol->lb_size); 5423 num_lb = (len + lb_size -1) / lb_size; 5424 5425 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5426 } 5427 5428 void 5429 udf_delete_node(struct udf_node *udf_node) 5430 { 5431 void *dscr; 5432 struct udf_mount *ump; 5433 struct long_ad *loc; 5434 int extnr, lvint, dummy; 5435 5436 ump = udf_node->ump; 5437 5438 /* paranoia check on integrity; should be open!; we could panic */ 5439 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5440 if (lvint == UDF_INTEGRITY_CLOSED) 5441 printf("\tIntegrity was CLOSED!\n"); 5442 5443 /* whatever the node type, change its size to zero */ 5444 (void) udf_resize_node(udf_node, 0, &dummy); 5445 5446 /* force it to be `clean'; no use writing it out */ 5447 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5448 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5449 5450 /* adjust file count */ 5451 udf_adjust_filecount(udf_node, -1); 5452 5453 /* 5454 * Free its allocated descriptors; memory will be released when 5455 * vop_reclaim() is called. 5456 */ 5457 loc = &udf_node->loc; 5458 5459 dscr = udf_node->fe; 5460 udf_free_descriptor_space(udf_node, loc, dscr); 5461 dscr = udf_node->efe; 5462 udf_free_descriptor_space(udf_node, loc, dscr); 5463 5464 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5465 dscr = udf_node->ext[extnr]; 5466 loc = &udf_node->ext_loc[extnr]; 5467 udf_free_descriptor_space(udf_node, loc, dscr); 5468 } 5469 } 5470 5471 /* --------------------------------------------------------------------- */ 5472 5473 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5474 int 5475 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5476 { 5477 struct file_entry *fe = udf_node->fe; 5478 struct extfile_entry *efe = udf_node->efe; 5479 uint64_t file_size; 5480 int error; 5481 5482 if (fe) { 5483 file_size = udf_rw64(fe->inf_len); 5484 } else { 5485 assert(udf_node->efe); 5486 file_size = udf_rw64(efe->inf_len); 5487 } 5488 5489 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5490 file_size, new_size)); 5491 5492 /* if not changing, we're done */ 5493 if (file_size == new_size) 5494 return 0; 5495 5496 *extended = (new_size > file_size); 5497 if (*extended) { 5498 error = udf_grow_node(udf_node, new_size); 5499 } else { 5500 error = udf_shrink_node(udf_node, new_size); 5501 } 5502 5503 return error; 5504 } 5505 5506 5507 /* --------------------------------------------------------------------- */ 5508 5509 void 5510 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5511 struct timespec *mod, struct timespec *birth) 5512 { 5513 struct timespec now; 5514 struct file_entry *fe; 5515 struct extfile_entry *efe; 5516 struct filetimes_extattr_entry *ft_extattr; 5517 struct timestamp *atime, *mtime, *attrtime, *ctime; 5518 struct timestamp fe_ctime; 5519 struct timespec cur_birth; 5520 uint32_t offset, a_l; 5521 uint8_t *filedata; 5522 int error; 5523 5524 /* protect against rogue values */ 5525 if (!udf_node) 5526 return; 5527 5528 fe = udf_node->fe; 5529 efe = udf_node->efe; 5530 5531 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5532 return; 5533 5534 /* get descriptor information */ 5535 if (fe) { 5536 atime = &fe->atime; 5537 mtime = &fe->mtime; 5538 attrtime = &fe->attrtime; 5539 filedata = fe->data; 5540 5541 /* initial save dummy setting */ 5542 ctime = &fe_ctime; 5543 5544 /* check our extended attribute if present */ 5545 error = udf_extattr_search_intern(udf_node, 5546 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5547 if (!error) { 5548 ft_extattr = (struct filetimes_extattr_entry *) 5549 (filedata + offset); 5550 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5551 ctime = &ft_extattr->times[0]; 5552 } 5553 /* TODO create the extended attribute if not found ? */ 5554 } else { 5555 assert(udf_node->efe); 5556 atime = &efe->atime; 5557 mtime = &efe->mtime; 5558 attrtime = &efe->attrtime; 5559 ctime = &efe->ctime; 5560 } 5561 5562 vfs_timestamp(&now); 5563 5564 /* set access time */ 5565 if (udf_node->i_flags & IN_ACCESS) { 5566 if (acc == NULL) 5567 acc = &now; 5568 udf_timespec_to_timestamp(acc, atime); 5569 } 5570 5571 /* set modification time */ 5572 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5573 if (mod == NULL) 5574 mod = &now; 5575 udf_timespec_to_timestamp(mod, mtime); 5576 5577 /* ensure birthtime is older than set modification! */ 5578 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5579 if ((cur_birth.tv_sec > mod->tv_sec) || 5580 ((cur_birth.tv_sec == mod->tv_sec) && 5581 (cur_birth.tv_nsec > mod->tv_nsec))) { 5582 udf_timespec_to_timestamp(mod, ctime); 5583 } 5584 } 5585 5586 /* update birthtime if specified */ 5587 /* XXX we asume here that given birthtime is older than mod */ 5588 if (birth && (birth->tv_sec != VNOVAL)) { 5589 udf_timespec_to_timestamp(birth, ctime); 5590 } 5591 5592 /* set change time */ 5593 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5594 udf_timespec_to_timestamp(&now, attrtime); 5595 5596 /* notify updates to the node itself */ 5597 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5598 udf_node->i_flags |= IN_ACCESSED; 5599 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5600 udf_node->i_flags |= IN_MODIFIED; 5601 5602 /* clear modification flags */ 5603 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5604 } 5605 5606 /* --------------------------------------------------------------------- */ 5607 5608 int 5609 udf_update(struct vnode *vp, struct timespec *acc, 5610 struct timespec *mod, struct timespec *birth, int updflags) 5611 { 5612 union dscrptr *dscrptr; 5613 struct udf_node *udf_node = VTOI(vp); 5614 struct udf_mount *ump = udf_node->ump; 5615 struct regid *impl_id; 5616 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5617 int waitfor, flags; 5618 5619 #ifdef DEBUG 5620 char bits[128]; 5621 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5622 updflags)); 5623 snprintb(bits, sizeof(bits), IN_FLAGBITS, udf_node->i_flags); 5624 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5625 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5626 #endif 5627 5628 /* set our times */ 5629 udf_itimes(udf_node, acc, mod, birth); 5630 5631 /* set our implementation id */ 5632 if (udf_node->fe) { 5633 dscrptr = (union dscrptr *) udf_node->fe; 5634 impl_id = &udf_node->fe->imp_id; 5635 } else { 5636 dscrptr = (union dscrptr *) udf_node->efe; 5637 impl_id = &udf_node->efe->imp_id; 5638 } 5639 5640 /* set our ID */ 5641 udf_set_regid(impl_id, IMPL_NAME); 5642 udf_add_impl_regid(ump, impl_id); 5643 5644 /* update our crc! on RMW we are not allowed to change a thing */ 5645 udf_validate_tag_and_crc_sums(dscrptr); 5646 5647 /* if called when mounted readonly, never write back */ 5648 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5649 return 0; 5650 5651 /* check if the node is dirty 'enough'*/ 5652 if (updflags & UPDATE_CLOSE) { 5653 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5654 } else { 5655 flags = udf_node->i_flags & IN_MODIFIED; 5656 } 5657 if (flags == 0) 5658 return 0; 5659 5660 /* determine if we need to write sync or async */ 5661 waitfor = 0; 5662 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5663 /* sync mounted */ 5664 waitfor = updflags & UPDATE_WAIT; 5665 if (updflags & UPDATE_DIROP) 5666 waitfor |= UPDATE_WAIT; 5667 } 5668 if (waitfor) 5669 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5670 5671 return 0; 5672 } 5673 5674 5675 /* --------------------------------------------------------------------- */ 5676 5677 5678 /* 5679 * Read one fid and process it into a dirent and advance to the next (*fid) 5680 * has to be allocated a logical block in size, (*dirent) struct dirent length 5681 */ 5682 5683 int 5684 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5685 struct fileid_desc *fid, struct dirent *dirent) 5686 { 5687 struct udf_node *dir_node = VTOI(vp); 5688 struct udf_mount *ump = dir_node->ump; 5689 struct file_entry *fe = dir_node->fe; 5690 struct extfile_entry *efe = dir_node->efe; 5691 uint32_t fid_size, lb_size; 5692 uint64_t file_size; 5693 char *fid_name; 5694 int enough, error; 5695 5696 assert(fid); 5697 assert(dirent); 5698 assert(dir_node); 5699 assert(offset); 5700 assert(*offset != 1); 5701 5702 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5703 /* check if we're past the end of the directory */ 5704 if (fe) { 5705 file_size = udf_rw64(fe->inf_len); 5706 } else { 5707 assert(dir_node->efe); 5708 file_size = udf_rw64(efe->inf_len); 5709 } 5710 if (*offset >= file_size) 5711 return EINVAL; 5712 5713 /* get maximum length of FID descriptor */ 5714 lb_size = udf_rw32(ump->logical_vol->lb_size); 5715 5716 /* initialise return values */ 5717 fid_size = 0; 5718 memset(dirent, 0, sizeof(struct dirent)); 5719 memset(fid, 0, lb_size); 5720 5721 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5722 if (!enough) { 5723 /* short dir ... */ 5724 return EIO; 5725 } 5726 5727 error = vn_rdwr(UIO_READ, vp, 5728 fid, MIN(file_size - (*offset), lb_size), *offset, 5729 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5730 NULL, NULL); 5731 if (error) 5732 return error; 5733 5734 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5735 /* 5736 * Check if we got a whole descriptor. 5737 * TODO Try to `resync' directory stream when something is very wrong. 5738 */ 5739 5740 /* check if our FID header is OK */ 5741 error = udf_check_tag(fid); 5742 if (error) { 5743 goto brokendir; 5744 } 5745 DPRINTF(FIDS, ("\ttag check ok\n")); 5746 5747 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5748 error = EIO; 5749 goto brokendir; 5750 } 5751 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5752 5753 /* check for length */ 5754 fid_size = udf_fidsize(fid); 5755 enough = (file_size - (*offset) >= fid_size); 5756 if (!enough) { 5757 error = EIO; 5758 goto brokendir; 5759 } 5760 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5761 5762 /* check FID contents */ 5763 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5764 brokendir: 5765 if (error) { 5766 /* note that is sometimes a bit quick to report */ 5767 printf("BROKEN DIRECTORY ENTRY\n"); 5768 /* RESYNC? */ 5769 /* TODO: use udf_resync_fid_stream */ 5770 return EIO; 5771 } 5772 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5773 5774 /* we got a whole and valid descriptor! */ 5775 DPRINTF(FIDS, ("\tinterpret FID\n")); 5776 5777 /* create resulting dirent structure */ 5778 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5779 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 5780 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5781 5782 /* '..' has no name, so provide one */ 5783 if (fid->file_char & UDF_FILE_CHAR_PAR) 5784 strcpy(dirent->d_name, ".."); 5785 5786 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5787 dirent->d_namlen = strlen(dirent->d_name); 5788 dirent->d_reclen = _DIRENT_SIZE(dirent); 5789 5790 /* 5791 * Note that its not worth trying to go for the filetypes now... its 5792 * too expensive too 5793 */ 5794 dirent->d_type = DT_UNKNOWN; 5795 5796 /* initial guess for filetype we can make */ 5797 if (fid->file_char & UDF_FILE_CHAR_DIR) 5798 dirent->d_type = DT_DIR; 5799 5800 /* advance */ 5801 *offset += fid_size; 5802 5803 return error; 5804 } 5805 5806 5807 /* --------------------------------------------------------------------- */ 5808 5809 static void 5810 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5811 int pass, int *ndirty) 5812 { 5813 struct udf_node *udf_node, *n_udf_node; 5814 struct vnode *vp; 5815 int vdirty, error; 5816 int on_type, on_flags, on_vnode; 5817 5818 derailed: 5819 KASSERT(mutex_owned(&mntvnode_lock)); 5820 5821 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 5822 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 5823 for (;udf_node; udf_node = n_udf_node) { 5824 DPRINTF(SYNC, (".")); 5825 5826 udf_node->i_flags &= ~IN_SYNCED; 5827 vp = udf_node->vnode; 5828 5829 mutex_enter(&vp->v_interlock); 5830 n_udf_node = LIST_NEXT(udf_node, sortchain); 5831 if (n_udf_node) 5832 n_udf_node->i_flags |= IN_SYNCED; 5833 5834 /* system nodes are not synced this way */ 5835 if (vp->v_vflag & VV_SYSTEM) { 5836 mutex_exit(&vp->v_interlock); 5837 continue; 5838 } 5839 5840 /* check if its dirty enough to even try */ 5841 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 5842 on_flags = ((udf_node->i_flags & 5843 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 5844 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 5845 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 5846 if (on_type || (on_flags || on_vnode)) { /* XXX */ 5847 /* not dirty (enough?) */ 5848 mutex_exit(&vp->v_interlock); 5849 continue; 5850 } 5851 5852 mutex_exit(&mntvnode_lock); 5853 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 5854 if (error) { 5855 mutex_enter(&mntvnode_lock); 5856 if (error == ENOENT) 5857 goto derailed; 5858 *ndirty += 1; 5859 continue; 5860 } 5861 5862 switch (pass) { 5863 case 1: 5864 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 5865 break; 5866 case 2: 5867 vdirty = vp->v_numoutput; 5868 if (vp->v_tag == VT_UDF) 5869 vdirty += udf_node->outstanding_bufs + 5870 udf_node->outstanding_nodedscr; 5871 if (vdirty == 0) 5872 VOP_FSYNC(vp, cred, 0,0,0); 5873 *ndirty += vdirty; 5874 break; 5875 case 3: 5876 vdirty = vp->v_numoutput; 5877 if (vp->v_tag == VT_UDF) 5878 vdirty += udf_node->outstanding_bufs + 5879 udf_node->outstanding_nodedscr; 5880 *ndirty += vdirty; 5881 break; 5882 } 5883 5884 vput(vp); 5885 mutex_enter(&mntvnode_lock); 5886 } 5887 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 5888 } 5889 5890 5891 void 5892 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 5893 { 5894 int dummy, ndirty; 5895 5896 mutex_enter(&mntvnode_lock); 5897 recount: 5898 dummy = 0; 5899 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5900 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5901 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 5902 5903 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5904 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5905 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 5906 5907 if (waitfor == MNT_WAIT) { 5908 ndirty = ump->devvp->v_numoutput; 5909 DPRINTF(SYNC, ("counting pending blocks: on devvp %d\n", 5910 ndirty)); 5911 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 5912 DPRINTF(SYNC, ("counted num dirty pending blocks %d\n", 5913 ndirty)); 5914 5915 if (ndirty) { 5916 /* 1/4 second wait */ 5917 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 5918 hz/4); 5919 goto recount; 5920 } 5921 } 5922 5923 mutex_exit(&mntvnode_lock); 5924 } 5925 5926 /* --------------------------------------------------------------------- */ 5927 5928 /* 5929 * Read and write file extent in/from the buffer. 5930 * 5931 * The splitup of the extent into seperate request-buffers is to minimise 5932 * copying around as much as possible. 5933 * 5934 * block based file reading and writing 5935 */ 5936 5937 static int 5938 udf_read_internal(struct udf_node *node, uint8_t *blob) 5939 { 5940 struct udf_mount *ump; 5941 struct file_entry *fe = node->fe; 5942 struct extfile_entry *efe = node->efe; 5943 uint64_t inflen; 5944 uint32_t sector_size; 5945 uint8_t *pos; 5946 int icbflags, addr_type; 5947 5948 /* get extent and do some paranoia checks */ 5949 ump = node->ump; 5950 sector_size = ump->discinfo.sector_size; 5951 5952 if (fe) { 5953 inflen = udf_rw64(fe->inf_len); 5954 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5955 icbflags = udf_rw16(fe->icbtag.flags); 5956 } else { 5957 assert(node->efe); 5958 inflen = udf_rw64(efe->inf_len); 5959 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5960 icbflags = udf_rw16(efe->icbtag.flags); 5961 } 5962 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5963 5964 assert(addr_type == UDF_ICB_INTERN_ALLOC); 5965 assert(inflen < sector_size); 5966 5967 /* copy out info */ 5968 memset(blob, 0, sector_size); 5969 memcpy(blob, pos, inflen); 5970 5971 return 0; 5972 } 5973 5974 5975 static int 5976 udf_write_internal(struct udf_node *node, uint8_t *blob) 5977 { 5978 struct udf_mount *ump; 5979 struct file_entry *fe = node->fe; 5980 struct extfile_entry *efe = node->efe; 5981 uint64_t inflen; 5982 uint32_t sector_size; 5983 uint8_t *pos; 5984 int icbflags, addr_type; 5985 5986 /* get extent and do some paranoia checks */ 5987 ump = node->ump; 5988 sector_size = ump->discinfo.sector_size; 5989 5990 if (fe) { 5991 inflen = udf_rw64(fe->inf_len); 5992 pos = &fe->data[0] + udf_rw32(fe->l_ea); 5993 icbflags = udf_rw16(fe->icbtag.flags); 5994 } else { 5995 assert(node->efe); 5996 inflen = udf_rw64(efe->inf_len); 5997 pos = &efe->data[0] + udf_rw32(efe->l_ea); 5998 icbflags = udf_rw16(efe->icbtag.flags); 5999 } 6000 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6001 6002 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6003 assert(inflen < sector_size); 6004 6005 /* copy in blob */ 6006 /* memset(pos, 0, inflen); */ 6007 memcpy(pos, blob, inflen); 6008 6009 return 0; 6010 } 6011 6012 6013 void 6014 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6015 { 6016 struct buf *nestbuf; 6017 struct udf_mount *ump = udf_node->ump; 6018 uint64_t *mapping; 6019 uint64_t run_start; 6020 uint32_t sector_size; 6021 uint32_t buf_offset, sector, rbuflen, rblk; 6022 uint32_t from, lblkno; 6023 uint32_t sectors; 6024 uint8_t *buf_pos; 6025 int error, run_length, isdir, what; 6026 6027 sector_size = udf_node->ump->discinfo.sector_size; 6028 6029 from = buf->b_blkno; 6030 sectors = buf->b_bcount / sector_size; 6031 6032 isdir = (udf_node->vnode->v_type == VDIR); 6033 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6034 6035 /* assure we have enough translation slots */ 6036 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6037 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6038 6039 if (sectors > UDF_MAX_MAPPINGS) { 6040 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6041 buf->b_error = EIO; 6042 biodone(buf); 6043 return; 6044 } 6045 6046 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6047 6048 error = 0; 6049 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6050 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6051 if (error) { 6052 buf->b_error = error; 6053 biodone(buf); 6054 goto out; 6055 } 6056 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6057 6058 /* pre-check if its an internal */ 6059 if (*mapping == UDF_TRANS_INTERN) { 6060 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6061 if (error) 6062 buf->b_error = error; 6063 biodone(buf); 6064 goto out; 6065 } 6066 DPRINTF(READ, ("\tnot intern\n")); 6067 6068 #ifdef DEBUG 6069 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6070 printf("Returned translation table:\n"); 6071 for (sector = 0; sector < sectors; sector++) { 6072 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6073 } 6074 } 6075 #endif 6076 6077 /* request read-in of data from disc sheduler */ 6078 buf->b_resid = buf->b_bcount; 6079 for (sector = 0; sector < sectors; sector++) { 6080 buf_offset = sector * sector_size; 6081 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6082 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6083 6084 /* check if its zero or unmapped to stop reading */ 6085 switch (mapping[sector]) { 6086 case UDF_TRANS_UNMAPPED: 6087 case UDF_TRANS_ZERO: 6088 /* copy zero sector TODO runlength like below */ 6089 memset(buf_pos, 0, sector_size); 6090 DPRINTF(READ, ("\treturning zero sector\n")); 6091 nestiobuf_done(buf, sector_size, 0); 6092 break; 6093 default : 6094 DPRINTF(READ, ("\tread sector " 6095 "%"PRIu64"\n", mapping[sector])); 6096 6097 lblkno = from + sector; 6098 run_start = mapping[sector]; 6099 run_length = 1; 6100 while (sector < sectors-1) { 6101 if (mapping[sector+1] != mapping[sector]+1) 6102 break; 6103 run_length++; 6104 sector++; 6105 } 6106 6107 /* 6108 * nest an iobuf and mark it for async reading. Since 6109 * we're using nested buffers, they can't be cached by 6110 * design. 6111 */ 6112 rbuflen = run_length * sector_size; 6113 rblk = run_start * (sector_size/DEV_BSIZE); 6114 6115 nestbuf = getiobuf(NULL, true); 6116 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6117 /* nestbuf is B_ASYNC */ 6118 6119 /* identify this nestbuf */ 6120 nestbuf->b_lblkno = lblkno; 6121 assert(nestbuf->b_vp == udf_node->vnode); 6122 6123 /* CD shedules on raw blkno */ 6124 nestbuf->b_blkno = rblk; 6125 nestbuf->b_proc = NULL; 6126 nestbuf->b_rawblkno = rblk; 6127 nestbuf->b_udf_c_type = what; 6128 6129 udf_discstrat_queuebuf(ump, nestbuf); 6130 } 6131 } 6132 out: 6133 /* if we're synchronously reading, wait for the completion */ 6134 if ((buf->b_flags & B_ASYNC) == 0) 6135 biowait(buf); 6136 6137 DPRINTF(READ, ("\tend of read_filebuf\n")); 6138 free(mapping, M_TEMP); 6139 return; 6140 } 6141 6142 6143 void 6144 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6145 { 6146 struct buf *nestbuf; 6147 struct udf_mount *ump = udf_node->ump; 6148 uint64_t *mapping; 6149 uint64_t run_start; 6150 uint32_t lb_size; 6151 uint32_t buf_offset, lb_num, rbuflen, rblk; 6152 uint32_t from, lblkno; 6153 uint32_t num_lb; 6154 uint8_t *buf_pos; 6155 int error, run_length, isdir, what, s; 6156 6157 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6158 6159 from = buf->b_blkno; 6160 num_lb = buf->b_bcount / lb_size; 6161 6162 isdir = (udf_node->vnode->v_type == VDIR); 6163 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6164 6165 if (udf_node == ump->metadatabitmap_node) 6166 what = UDF_C_METADATA_SBM; 6167 6168 /* assure we have enough translation slots */ 6169 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6170 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6171 6172 if (num_lb > UDF_MAX_MAPPINGS) { 6173 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6174 buf->b_error = EIO; 6175 biodone(buf); 6176 return; 6177 } 6178 6179 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6180 6181 error = 0; 6182 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6183 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6184 if (error) { 6185 buf->b_error = error; 6186 biodone(buf); 6187 goto out; 6188 } 6189 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6190 6191 /* if its internally mapped, we can write it in the descriptor itself */ 6192 if (*mapping == UDF_TRANS_INTERN) { 6193 /* TODO paranoia check if we ARE going to have enough space */ 6194 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6195 if (error) 6196 buf->b_error = error; 6197 biodone(buf); 6198 goto out; 6199 } 6200 DPRINTF(WRITE, ("\tnot intern\n")); 6201 6202 /* request write out of data to disc sheduler */ 6203 buf->b_resid = buf->b_bcount; 6204 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6205 buf_offset = lb_num * lb_size; 6206 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6207 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6208 6209 /* 6210 * Mappings are not that important here. Just before we write 6211 * the lb_num we late-allocate them when needed and update the 6212 * mapping in the udf_node. 6213 */ 6214 6215 /* XXX why not ignore the mapping altogether ? */ 6216 /* TODO estimate here how much will be late-allocated */ 6217 DPRINTF(WRITE, ("\twrite lb_num " 6218 "%"PRIu64, mapping[lb_num])); 6219 6220 lblkno = from + lb_num; 6221 run_start = mapping[lb_num]; 6222 run_length = 1; 6223 while (lb_num < num_lb-1) { 6224 if (mapping[lb_num+1] != mapping[lb_num]+1) 6225 if (mapping[lb_num+1] != mapping[lb_num]) 6226 break; 6227 run_length++; 6228 lb_num++; 6229 } 6230 DPRINTF(WRITE, ("+ %d\n", run_length)); 6231 6232 /* nest an iobuf on the master buffer for the extent */ 6233 rbuflen = run_length * lb_size; 6234 rblk = run_start * (lb_size/DEV_BSIZE); 6235 6236 #if 0 6237 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6238 switch (mapping[lb_num]) { 6239 case UDF_TRANS_UNMAPPED: 6240 case UDF_TRANS_ZERO: 6241 rblk = -1; 6242 break; 6243 default: 6244 rblk = run_start * (lb_size/DEV_BSIZE); 6245 break; 6246 } 6247 #endif 6248 6249 nestbuf = getiobuf(NULL, true); 6250 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6251 /* nestbuf is B_ASYNC */ 6252 6253 /* identify this nestbuf */ 6254 nestbuf->b_lblkno = lblkno; 6255 KASSERT(nestbuf->b_vp == udf_node->vnode); 6256 6257 /* CD shedules on raw blkno */ 6258 nestbuf->b_blkno = rblk; 6259 nestbuf->b_proc = NULL; 6260 nestbuf->b_rawblkno = rblk; 6261 nestbuf->b_udf_c_type = what; 6262 6263 /* increment our outstanding bufs counter */ 6264 s = splbio(); 6265 udf_node->outstanding_bufs++; 6266 splx(s); 6267 6268 udf_discstrat_queuebuf(ump, nestbuf); 6269 } 6270 out: 6271 /* if we're synchronously writing, wait for the completion */ 6272 if ((buf->b_flags & B_ASYNC) == 0) 6273 biowait(buf); 6274 6275 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6276 free(mapping, M_TEMP); 6277 return; 6278 } 6279 6280 /* --------------------------------------------------------------------- */ 6281 6282 6283
Indexes created Thu Sep 25 16:09:42 GMT 2025