udf_subr.c revision 1.73.4.11
1 /* $NetBSD: udf_subr.c,v 1.73.4.11 2009/06/06 22:04:40 bouyer 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 1.73.4.11 2009/06/06 22:04:40 bouyer Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_quota.h" 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <sys/namei.h> 45 #include <sys/proc.h> 46 #include <sys/kernel.h> 47 #include <sys/vnode.h> 48 #include <miscfs/genfs/genfs_node.h> 49 #include <sys/mount.h> 50 #include <sys/buf.h> 51 #include <sys/file.h> 52 #include <sys/device.h> 53 #include <sys/disklabel.h> 54 #include <sys/ioctl.h> 55 #include <sys/malloc.h> 56 #include <sys/dirent.h> 57 #include <sys/stat.h> 58 #include <sys/conf.h> 59 #include <sys/kauth.h> 60 #include <fs/unicode.h> 61 #include <dev/clock_subr.h> 62 63 #include <fs/udf/ecma167-udf.h> 64 #include <fs/udf/udf_mount.h> 65 #include <sys/dirhash.h> 66 67 #include "udf.h" 68 #include "udf_subr.h" 69 #include "udf_bswap.h" 70 71 72 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 73 74 #define UDF_SET_SYSTEMFILE(vp) \ 75 /* XXXAD Is the vnode locked? */ \ 76 (vp)->v_vflag |= VV_SYSTEM; \ 77 vref(vp); \ 78 vput(vp); \ 79 80 extern int syncer_maxdelay; /* maximum delay time */ 81 extern int (**udf_vnodeop_p)(void *); 82 83 /* --------------------------------------------------------------------- */ 84 85 //#ifdef DEBUG 86 #if 1 87 88 #if 0 89 static void 90 udf_dumpblob(boid *blob, uint32_t dlen) 91 { 92 int i, j; 93 94 printf("blob = %p\n", blob); 95 printf("dump of %d bytes\n", dlen); 96 97 for (i = 0; i < dlen; i+ = 16) { 98 printf("%04x ", i); 99 for (j = 0; j < 16; j++) { 100 if (i+j < dlen) { 101 printf("%02x ", blob[i+j]); 102 } else { 103 printf(" "); 104 } 105 } 106 for (j = 0; j < 16; j++) { 107 if (i+j < dlen) { 108 if (blob[i+j]>32 && blob[i+j]! = 127) { 109 printf("%c", blob[i+j]); 110 } else { 111 printf("."); 112 } 113 } 114 } 115 printf("\n"); 116 } 117 printf("\n"); 118 Debugger(); 119 } 120 #endif 121 122 static void 123 udf_dump_discinfo(struct udf_mount *ump) 124 { 125 char bits[128]; 126 struct mmc_discinfo *di = &ump->discinfo; 127 128 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 129 return; 130 131 printf("Device/media info :\n"); 132 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 133 printf("\tderived class %d\n", di->mmc_class); 134 printf("\tsector size %d\n", di->sector_size); 135 printf("\tdisc state %d\n", di->disc_state); 136 printf("\tlast ses state %d\n", di->last_session_state); 137 printf("\tbg format state %d\n", di->bg_format_state); 138 printf("\tfrst track %d\n", di->first_track); 139 printf("\tfst on last ses %d\n", di->first_track_last_session); 140 printf("\tlst on last ses %d\n", di->last_track_last_session); 141 printf("\tlink block penalty %d\n", di->link_block_penalty); 142 bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 143 sizeof(bits)); 144 printf("\tdisc flags %s\n", bits); 145 printf("\tdisc id %x\n", di->disc_id); 146 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 147 148 printf("\tnum sessions %d\n", di->num_sessions); 149 printf("\tnum tracks %d\n", di->num_tracks); 150 151 bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 152 printf("\tcapabilities cur %s\n", bits); 153 bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 154 printf("\tcapabilities cap %s\n", bits); 155 } 156 157 static void 158 udf_dump_trackinfo(struct mmc_trackinfo *trackinfo) 159 { 160 char bits[128]; 161 162 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 163 return; 164 165 printf("Trackinfo for track %d:\n", trackinfo->tracknr); 166 printf("\tsessionnr %d\n", trackinfo->sessionnr); 167 printf("\ttrack mode %d\n", trackinfo->track_mode); 168 printf("\tdata mode %d\n", trackinfo->data_mode); 169 bitmask_snprintf(trackinfo->flags, MMC_TRACKINFO_FLAGBITS, bits, 170 sizeof(bits)); 171 printf("\tflags %s\n", bits); 172 173 printf("\ttrack start %d\n", trackinfo->track_start); 174 printf("\tnext_writable %d\n", trackinfo->next_writable); 175 printf("\tfree_blocks %d\n", trackinfo->free_blocks); 176 printf("\tpacket_size %d\n", trackinfo->packet_size); 177 printf("\ttrack size %d\n", trackinfo->track_size); 178 printf("\tlast recorded block %d\n", trackinfo->last_recorded); 179 } 180 181 #else 182 #define udf_dump_discinfo(a); 183 #define udf_dump_trackinfo(a); 184 #endif 185 186 187 /* --------------------------------------------------------------------- */ 188 189 /* not called often */ 190 int 191 udf_update_discinfo(struct udf_mount *ump) 192 { 193 struct vnode *devvp = ump->devvp; 194 struct partinfo dpart; 195 struct mmc_discinfo *di; 196 int error; 197 198 DPRINTF(VOLUMES, ("read/update disc info\n")); 199 di = &ump->discinfo; 200 memset(di, 0, sizeof(struct mmc_discinfo)); 201 202 /* check if we're on a MMC capable device, i.e. CD/DVD */ 203 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 204 if (error == 0) { 205 udf_dump_discinfo(ump); 206 return 0; 207 } 208 209 /* disc partition support */ 210 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 211 if (error) 212 return ENODEV; 213 214 /* set up a disc info profile for partitions */ 215 di->mmc_profile = 0x01; /* disc type */ 216 di->mmc_class = MMC_CLASS_DISC; 217 di->disc_state = MMC_STATE_CLOSED; 218 di->last_session_state = MMC_STATE_CLOSED; 219 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 220 di->link_block_penalty = 0; 221 222 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 223 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 224 di->mmc_cap = di->mmc_cur; 225 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 226 227 /* TODO problem with last_possible_lba on resizable VND; request */ 228 di->last_possible_lba = dpart.part->p_size; 229 di->sector_size = dpart.disklab->d_secsize; 230 231 di->num_sessions = 1; 232 di->num_tracks = 1; 233 234 di->first_track = 1; 235 di->first_track_last_session = di->last_track_last_session = 1; 236 237 udf_dump_discinfo(ump); 238 return 0; 239 } 240 241 242 int 243 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 244 { 245 struct vnode *devvp = ump->devvp; 246 struct mmc_discinfo *di = &ump->discinfo; 247 int error, class; 248 249 DPRINTF(VOLUMES, ("read track info\n")); 250 251 class = di->mmc_class; 252 if (class != MMC_CLASS_DISC) { 253 /* tracknr specified in struct ti */ 254 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 255 return error; 256 } 257 258 /* disc partition support */ 259 if (ti->tracknr != 1) 260 return EIO; 261 262 /* create fake ti (TODO check for resized vnds) */ 263 ti->sessionnr = 1; 264 265 ti->track_mode = 0; /* XXX */ 266 ti->data_mode = 0; /* XXX */ 267 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 268 269 ti->track_start = 0; 270 ti->packet_size = 1; 271 272 /* TODO support for resizable vnd */ 273 ti->track_size = di->last_possible_lba; 274 ti->next_writable = di->last_possible_lba; 275 ti->last_recorded = ti->next_writable; 276 ti->free_blocks = 0; 277 278 return 0; 279 } 280 281 282 int 283 udf_setup_writeparams(struct udf_mount *ump) 284 { 285 struct mmc_writeparams mmc_writeparams; 286 int error; 287 288 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 289 return 0; 290 291 /* 292 * only CD burning normally needs setting up, but other disc types 293 * might need other settings to be made. The MMC framework will set up 294 * the nessisary recording parameters according to the disc 295 * characteristics read in. Modifications can be made in the discinfo 296 * structure passed to change the nature of the disc. 297 */ 298 299 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 300 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 301 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 302 303 /* 304 * UDF dictates first track to determine track mode for the whole 305 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 306 * To prevent problems with a `reserved' track in front we start with 307 * the 2nd track and if that is not valid, go for the 1st. 308 */ 309 mmc_writeparams.tracknr = 2; 310 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 311 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 312 313 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 314 FKIOCTL, NOCRED); 315 if (error) { 316 mmc_writeparams.tracknr = 1; 317 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 318 &mmc_writeparams, FKIOCTL, NOCRED); 319 } 320 return error; 321 } 322 323 324 int 325 udf_synchronise_caches(struct udf_mount *ump) 326 { 327 struct mmc_op mmc_op; 328 329 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 330 331 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 332 return 0; 333 334 /* discs are done now */ 335 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 336 return 0; 337 338 bzero(&mmc_op, sizeof(struct mmc_op)); 339 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 340 341 /* ignore return code */ 342 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 343 344 return 0; 345 } 346 347 /* --------------------------------------------------------------------- */ 348 349 /* track/session searching for mounting */ 350 int 351 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 352 int *first_tracknr, int *last_tracknr) 353 { 354 struct mmc_trackinfo trackinfo; 355 uint32_t tracknr, start_track, num_tracks; 356 int error; 357 358 /* if negative, sessionnr is relative to last session */ 359 if (args->sessionnr < 0) { 360 args->sessionnr += ump->discinfo.num_sessions; 361 } 362 363 /* sanity */ 364 if (args->sessionnr < 0) 365 args->sessionnr = 0; 366 if (args->sessionnr > ump->discinfo.num_sessions) 367 args->sessionnr = ump->discinfo.num_sessions; 368 369 /* search the tracks for this session, zero session nr indicates last */ 370 if (args->sessionnr == 0) 371 args->sessionnr = ump->discinfo.num_sessions; 372 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 373 args->sessionnr--; 374 375 /* sanity again */ 376 if (args->sessionnr < 0) 377 args->sessionnr = 0; 378 379 /* search the first and last track of the specified session */ 380 num_tracks = ump->discinfo.num_tracks; 381 start_track = ump->discinfo.first_track; 382 383 /* search for first track of this session */ 384 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 385 /* get track info */ 386 trackinfo.tracknr = tracknr; 387 error = udf_update_trackinfo(ump, &trackinfo); 388 if (error) 389 return error; 390 391 if (trackinfo.sessionnr == args->sessionnr) 392 break; 393 } 394 *first_tracknr = tracknr; 395 396 /* search for last track of this session */ 397 for (;tracknr <= num_tracks; tracknr++) { 398 /* get track info */ 399 trackinfo.tracknr = tracknr; 400 error = udf_update_trackinfo(ump, &trackinfo); 401 if (error || (trackinfo.sessionnr != args->sessionnr)) { 402 tracknr--; 403 break; 404 } 405 } 406 if (tracknr > num_tracks) 407 tracknr--; 408 409 *last_tracknr = tracknr; 410 411 if (*last_tracknr < *first_tracknr) { 412 printf( "udf_search_tracks: sanity check on drive+disc failed, " 413 "drive returned garbage\n"); 414 return EINVAL; 415 } 416 417 assert(*last_tracknr >= *first_tracknr); 418 return 0; 419 } 420 421 422 /* 423 * NOTE: this is the only routine in this file that directly peeks into the 424 * metadata file but since its at a larval state of the mount it can't hurt. 425 * 426 * XXX candidate for udf_allocation.c 427 * XXX clean me up!, change to new node reading code. 428 */ 429 430 static void 431 udf_check_track_metadata_overlap(struct udf_mount *ump, 432 struct mmc_trackinfo *trackinfo) 433 { 434 struct part_desc *part; 435 struct file_entry *fe; 436 struct extfile_entry *efe; 437 struct short_ad *s_ad; 438 struct long_ad *l_ad; 439 uint32_t track_start, track_end; 440 uint32_t phys_part_start, phys_part_end, part_start, part_end; 441 uint32_t sector_size, len, alloclen, plb_num; 442 uint8_t *pos; 443 int addr_type, icblen, icbflags, flags; 444 445 /* get our track extents */ 446 track_start = trackinfo->track_start; 447 track_end = track_start + trackinfo->track_size; 448 449 /* get our base partition extent */ 450 KASSERT(ump->node_part == ump->fids_part); 451 part = ump->partitions[ump->node_part]; 452 phys_part_start = udf_rw32(part->start_loc); 453 phys_part_end = phys_part_start + udf_rw32(part->part_len); 454 455 /* no use if its outside the physical partition */ 456 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 457 return; 458 459 /* 460 * now follow all extents in the fe/efe to see if they refer to this 461 * track 462 */ 463 464 sector_size = ump->discinfo.sector_size; 465 466 /* XXX should we claim exclusive access to the metafile ? */ 467 /* TODO: move to new node read code */ 468 fe = ump->metadata_node->fe; 469 efe = ump->metadata_node->efe; 470 if (fe) { 471 alloclen = udf_rw32(fe->l_ad); 472 pos = &fe->data[0] + udf_rw32(fe->l_ea); 473 icbflags = udf_rw16(fe->icbtag.flags); 474 } else { 475 assert(efe); 476 alloclen = udf_rw32(efe->l_ad); 477 pos = &efe->data[0] + udf_rw32(efe->l_ea); 478 icbflags = udf_rw16(efe->icbtag.flags); 479 } 480 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 481 482 while (alloclen) { 483 if (addr_type == UDF_ICB_SHORT_ALLOC) { 484 icblen = sizeof(struct short_ad); 485 s_ad = (struct short_ad *) pos; 486 len = udf_rw32(s_ad->len); 487 plb_num = udf_rw32(s_ad->lb_num); 488 } else { 489 /* should not be present, but why not */ 490 icblen = sizeof(struct long_ad); 491 l_ad = (struct long_ad *) pos; 492 len = udf_rw32(l_ad->len); 493 plb_num = udf_rw32(l_ad->loc.lb_num); 494 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 495 } 496 /* process extent */ 497 flags = UDF_EXT_FLAGS(len); 498 len = UDF_EXT_LEN(len); 499 500 part_start = phys_part_start + plb_num; 501 part_end = part_start + (len / sector_size); 502 503 if ((part_start >= track_start) && (part_end <= track_end)) { 504 /* extent is enclosed within this track */ 505 ump->metadata_track = *trackinfo; 506 return; 507 } 508 509 pos += icblen; 510 alloclen -= icblen; 511 } 512 } 513 514 515 int 516 udf_search_writing_tracks(struct udf_mount *ump) 517 { 518 struct vnode *devvp = ump->devvp; 519 struct mmc_trackinfo trackinfo; 520 struct mmc_op mmc_op; 521 struct part_desc *part; 522 uint32_t tracknr, start_track, num_tracks; 523 uint32_t track_start, track_end, part_start, part_end; 524 int node_alloc, error; 525 526 /* 527 * in the CD/(HD)DVD/BD recordable device model a few tracks within 528 * the last session might be open but in the UDF device model at most 529 * three tracks can be open: a reserved track for delayed ISO VRS 530 * writing, a data track and a metadata track. We search here for the 531 * data track and the metadata track. Note that the reserved track is 532 * troublesome but can be detected by its small size of < 512 sectors. 533 */ 534 535 /* update discinfo since it might have changed */ 536 error = udf_update_discinfo(ump); 537 if (error) 538 return error; 539 540 num_tracks = ump->discinfo.num_tracks; 541 start_track = ump->discinfo.first_track; 542 543 /* fetch info on first and possibly only track */ 544 trackinfo.tracknr = start_track; 545 error = udf_update_trackinfo(ump, &trackinfo); 546 if (error) 547 return error; 548 549 /* copy results to our mount point */ 550 ump->data_track = trackinfo; 551 ump->metadata_track = trackinfo; 552 553 /* if not sequential, we're done */ 554 if (num_tracks == 1) 555 return 0; 556 557 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 558 /* get track info */ 559 trackinfo.tracknr = tracknr; 560 error = udf_update_trackinfo(ump, &trackinfo); 561 if (error) 562 return error; 563 564 /* 565 * If this track is marked damaged, ask for repair. This is an 566 * optional command, so ignore its error but report warning. 567 */ 568 if (trackinfo.flags & MMC_TRACKINFO_DAMAGED) { 569 memset(&mmc_op, 0, sizeof(mmc_op)); 570 mmc_op.operation = MMC_OP_REPAIRTRACK; 571 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 572 mmc_op.tracknr = tracknr; 573 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 574 if (error) 575 (void)printf("Drive can't explicitly repair " 576 "damaged track %d, but it might " 577 "autorepair\n", tracknr); 578 579 /* reget track info */ 580 error = udf_update_trackinfo(ump, &trackinfo); 581 if (error) 582 return error; 583 } 584 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 585 continue; 586 587 track_start = trackinfo.track_start; 588 track_end = track_start + trackinfo.track_size; 589 590 /* check for overlap on data partition */ 591 part = ump->partitions[ump->data_part]; 592 part_start = udf_rw32(part->start_loc); 593 part_end = part_start + udf_rw32(part->part_len); 594 if ((part_start < track_end) && (part_end > track_start)) { 595 ump->data_track = trackinfo; 596 /* TODO check if UDF partition data_part is writable */ 597 } 598 599 /* check for overlap on metadata partition */ 600 node_alloc = ump->vtop_alloc[ump->node_part]; 601 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 602 (node_alloc == UDF_ALLOC_METABITMAP)) { 603 udf_check_track_metadata_overlap(ump, &trackinfo); 604 } else { 605 ump->metadata_track = trackinfo; 606 } 607 } 608 609 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 610 return EROFS; 611 612 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 613 return EROFS; 614 615 return 0; 616 } 617 618 /* --------------------------------------------------------------------- */ 619 620 /* 621 * Check if the blob starts with a good UDF tag. Tags are protected by a 622 * checksum over the reader except one byte at position 4 that is the checksum 623 * itself. 624 */ 625 626 int 627 udf_check_tag(void *blob) 628 { 629 struct desc_tag *tag = blob; 630 uint8_t *pos, sum, cnt; 631 632 /* check TAG header checksum */ 633 pos = (uint8_t *) tag; 634 sum = 0; 635 636 for(cnt = 0; cnt < 16; cnt++) { 637 if (cnt != 4) 638 sum += *pos; 639 pos++; 640 } 641 if (sum != tag->cksum) { 642 /* bad tag header checksum; this is not a valid tag */ 643 return EINVAL; 644 } 645 646 return 0; 647 } 648 649 650 /* 651 * check tag payload will check descriptor CRC as specified. 652 * If the descriptor is too long, it will return EIO otherwise EINVAL. 653 */ 654 655 int 656 udf_check_tag_payload(void *blob, uint32_t max_length) 657 { 658 struct desc_tag *tag = blob; 659 uint16_t crc, crc_len; 660 661 crc_len = udf_rw16(tag->desc_crc_len); 662 663 /* check payload CRC if applicable */ 664 if (crc_len == 0) 665 return 0; 666 667 if (crc_len > max_length) 668 return EIO; 669 670 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 671 if (crc != udf_rw16(tag->desc_crc)) { 672 /* bad payload CRC; this is a broken tag */ 673 return EINVAL; 674 } 675 676 return 0; 677 } 678 679 680 void 681 udf_validate_tag_sum(void *blob) 682 { 683 struct desc_tag *tag = blob; 684 uint8_t *pos, sum, cnt; 685 686 /* calculate TAG header checksum */ 687 pos = (uint8_t *) tag; 688 sum = 0; 689 690 for(cnt = 0; cnt < 16; cnt++) { 691 if (cnt != 4) sum += *pos; 692 pos++; 693 } 694 tag->cksum = sum; /* 8 bit */ 695 } 696 697 698 /* assumes sector number of descriptor to be saved already present */ 699 void 700 udf_validate_tag_and_crc_sums(void *blob) 701 { 702 struct desc_tag *tag = blob; 703 uint8_t *btag = (uint8_t *) tag; 704 uint16_t crc, crc_len; 705 706 crc_len = udf_rw16(tag->desc_crc_len); 707 708 /* check payload CRC if applicable */ 709 if (crc_len > 0) { 710 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 711 tag->desc_crc = udf_rw16(crc); 712 } 713 714 /* calculate TAG header checksum */ 715 udf_validate_tag_sum(blob); 716 } 717 718 /* --------------------------------------------------------------------- */ 719 720 /* 721 * XXX note the different semantics from udfclient: for FIDs it still rounds 722 * up to sectors. Use udf_fidsize() for a correct length. 723 */ 724 725 int 726 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 727 { 728 uint32_t size, tag_id, num_lb, elmsz; 729 730 tag_id = udf_rw16(dscr->tag.id); 731 732 switch (tag_id) { 733 case TAGID_LOGVOL : 734 size = sizeof(struct logvol_desc) - 1; 735 size += udf_rw32(dscr->lvd.mt_l); 736 break; 737 case TAGID_UNALLOC_SPACE : 738 elmsz = sizeof(struct extent_ad); 739 size = sizeof(struct unalloc_sp_desc) - elmsz; 740 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 741 break; 742 case TAGID_FID : 743 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 744 size = (size + 3) & ~3; 745 break; 746 case TAGID_LOGVOL_INTEGRITY : 747 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 748 size += udf_rw32(dscr->lvid.l_iu); 749 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 750 break; 751 case TAGID_SPACE_BITMAP : 752 size = sizeof(struct space_bitmap_desc) - 1; 753 size += udf_rw32(dscr->sbd.num_bytes); 754 break; 755 case TAGID_SPARING_TABLE : 756 elmsz = sizeof(struct spare_map_entry); 757 size = sizeof(struct udf_sparing_table) - elmsz; 758 size += udf_rw16(dscr->spt.rt_l) * elmsz; 759 break; 760 case TAGID_FENTRY : 761 size = sizeof(struct file_entry); 762 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 763 break; 764 case TAGID_EXTFENTRY : 765 size = sizeof(struct extfile_entry); 766 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 767 break; 768 case TAGID_FSD : 769 size = sizeof(struct fileset_desc); 770 break; 771 default : 772 size = sizeof(union dscrptr); 773 break; 774 } 775 776 if ((size == 0) || (lb_size == 0)) 777 return 0; 778 779 if (lb_size == 1) 780 return size; 781 782 /* round up in sectors */ 783 num_lb = (size + lb_size -1) / lb_size; 784 return num_lb * lb_size; 785 } 786 787 788 int 789 udf_fidsize(struct fileid_desc *fid) 790 { 791 uint32_t size; 792 793 if (udf_rw16(fid->tag.id) != TAGID_FID) 794 panic("got udf_fidsize on non FID\n"); 795 796 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 797 size = (size + 3) & ~3; 798 799 return size; 800 } 801 802 /* --------------------------------------------------------------------- */ 803 804 void 805 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 806 { 807 int ret; 808 809 mutex_enter(&udf_node->node_mutex); 810 /* wait until free */ 811 while (udf_node->i_flags & IN_LOCKED) { 812 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 813 /* TODO check if we should return error; abort */ 814 if (ret == EWOULDBLOCK) { 815 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 816 "wanted at %s:%d, previously locked at %s:%d\n", 817 udf_node, fname, lineno, 818 udf_node->lock_fname, udf_node->lock_lineno)); 819 } 820 } 821 /* grab */ 822 udf_node->i_flags |= IN_LOCKED | flag; 823 /* debug */ 824 udf_node->lock_fname = fname; 825 udf_node->lock_lineno = lineno; 826 827 mutex_exit(&udf_node->node_mutex); 828 } 829 830 831 void 832 udf_unlock_node(struct udf_node *udf_node, int flag) 833 { 834 mutex_enter(&udf_node->node_mutex); 835 udf_node->i_flags &= ~(IN_LOCKED | flag); 836 cv_broadcast(&udf_node->node_lock); 837 mutex_exit(&udf_node->node_mutex); 838 } 839 840 841 /* --------------------------------------------------------------------- */ 842 843 static int 844 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 845 { 846 int error; 847 848 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 849 (union dscrptr **) dst); 850 if (!error) { 851 /* blank terminator blocks are not allowed here */ 852 if (*dst == NULL) 853 return ENOENT; 854 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 855 error = ENOENT; 856 free(*dst, M_UDFVOLD); 857 *dst = NULL; 858 DPRINTF(VOLUMES, ("Not an anchor\n")); 859 } 860 } 861 862 return error; 863 } 864 865 866 int 867 udf_read_anchors(struct udf_mount *ump) 868 { 869 struct udf_args *args = &ump->mount_args; 870 struct mmc_trackinfo first_track; 871 struct mmc_trackinfo second_track; 872 struct mmc_trackinfo last_track; 873 struct anchor_vdp **anchorsp; 874 uint32_t track_start; 875 uint32_t track_end; 876 uint32_t positions[4]; 877 int first_tracknr, last_tracknr; 878 int error, anch, ok, first_anchor; 879 880 /* search the first and last track of the specified session */ 881 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 882 if (!error) { 883 first_track.tracknr = first_tracknr; 884 error = udf_update_trackinfo(ump, &first_track); 885 } 886 if (!error) { 887 last_track.tracknr = last_tracknr; 888 error = udf_update_trackinfo(ump, &last_track); 889 } 890 if ((!error) && (first_tracknr != last_tracknr)) { 891 second_track.tracknr = first_tracknr+1; 892 error = udf_update_trackinfo(ump, &second_track); 893 } 894 if (error) { 895 printf("UDF mount: reading disc geometry failed\n"); 896 return 0; 897 } 898 899 track_start = first_track.track_start; 900 901 /* `end' is not as straitforward as start. */ 902 track_end = last_track.track_start 903 + last_track.track_size - last_track.free_blocks - 1; 904 905 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 906 /* end of track is not straitforward here */ 907 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 908 track_end = last_track.last_recorded; 909 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 910 track_end = last_track.next_writable 911 - ump->discinfo.link_block_penalty; 912 } 913 914 /* its no use reading a blank track */ 915 first_anchor = 0; 916 if (first_track.flags & MMC_TRACKINFO_BLANK) 917 first_anchor = 1; 918 919 /* get our packet size */ 920 ump->packet_size = first_track.packet_size; 921 if (first_track.flags & MMC_TRACKINFO_BLANK) 922 ump->packet_size = second_track.packet_size; 923 924 if (ump->packet_size <= 1) { 925 /* take max, but not bigger than 64 */ 926 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 927 ump->packet_size = MIN(ump->packet_size, 64); 928 } 929 KASSERT(ump->packet_size >= 1); 930 931 /* read anchors start+256, start+512, end-256, end */ 932 positions[0] = track_start+256; 933 positions[1] = track_end-256; 934 positions[2] = track_end; 935 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 936 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 937 938 ok = 0; 939 anchorsp = ump->anchors; 940 for (anch = first_anchor; anch < 4; anch++) { 941 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 942 positions[anch])); 943 error = udf_read_anchor(ump, positions[anch], anchorsp); 944 if (!error) { 945 anchorsp++; 946 ok++; 947 } 948 } 949 950 /* VATs are only recorded on sequential media, but initialise */ 951 ump->first_possible_vat_location = track_start + 2; 952 ump->last_possible_vat_location = track_end + last_track.packet_size; 953 954 return ok; 955 } 956 957 /* --------------------------------------------------------------------- */ 958 959 /* we dont try to be smart; we just record the parts */ 960 #define UDF_UPDATE_DSCR(name, dscr) \ 961 if (name) \ 962 free(name, M_UDFVOLD); \ 963 name = dscr; 964 965 static int 966 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 967 { 968 struct part_desc *part; 969 uint16_t phys_part, raw_phys_part; 970 971 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 972 udf_rw16(dscr->tag.id))); 973 switch (udf_rw16(dscr->tag.id)) { 974 case TAGID_PRI_VOL : /* primary partition */ 975 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 976 break; 977 case TAGID_LOGVOL : /* logical volume */ 978 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 979 break; 980 case TAGID_UNALLOC_SPACE : /* unallocated space */ 981 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 982 break; 983 case TAGID_IMP_VOL : /* implementation */ 984 /* XXX do we care about multiple impl. descr ? */ 985 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 986 break; 987 case TAGID_PARTITION : /* physical partition */ 988 /* not much use if its not allocated */ 989 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 990 free(dscr, M_UDFVOLD); 991 break; 992 } 993 994 /* 995 * BUGALERT: some rogue implementations use random physical 996 * partion numbers to break other implementations so lookup 997 * the number. 998 */ 999 raw_phys_part = udf_rw16(dscr->pd.part_num); 1000 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1001 part = ump->partitions[phys_part]; 1002 if (part == NULL) 1003 break; 1004 if (udf_rw16(part->part_num) == raw_phys_part) 1005 break; 1006 } 1007 if (phys_part == UDF_PARTITIONS) { 1008 free(dscr, M_UDFVOLD); 1009 return EINVAL; 1010 } 1011 1012 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 1013 break; 1014 case TAGID_VOL : /* volume space extender; rare */ 1015 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 1016 free(dscr, M_UDFVOLD); 1017 break; 1018 default : 1019 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 1020 udf_rw16(dscr->tag.id))); 1021 free(dscr, M_UDFVOLD); 1022 } 1023 1024 return 0; 1025 } 1026 #undef UDF_UPDATE_DSCR 1027 1028 /* --------------------------------------------------------------------- */ 1029 1030 static int 1031 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 1032 { 1033 union dscrptr *dscr; 1034 uint32_t sector_size, dscr_size; 1035 int error; 1036 1037 sector_size = ump->discinfo.sector_size; 1038 1039 /* loc is sectornr, len is in bytes */ 1040 error = EIO; 1041 while (len) { 1042 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 1043 if (error) 1044 return error; 1045 1046 /* blank block is a terminator */ 1047 if (dscr == NULL) 1048 return 0; 1049 1050 /* TERM descriptor is a terminator */ 1051 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 1052 free(dscr, M_UDFVOLD); 1053 return 0; 1054 } 1055 1056 /* process all others */ 1057 dscr_size = udf_tagsize(dscr, sector_size); 1058 error = udf_process_vds_descriptor(ump, dscr); 1059 if (error) { 1060 free(dscr, M_UDFVOLD); 1061 break; 1062 } 1063 assert((dscr_size % sector_size) == 0); 1064 1065 len -= dscr_size; 1066 loc += dscr_size / sector_size; 1067 } 1068 1069 return error; 1070 } 1071 1072 1073 int 1074 udf_read_vds_space(struct udf_mount *ump) 1075 { 1076 /* struct udf_args *args = &ump->mount_args; */ 1077 struct anchor_vdp *anchor, *anchor2; 1078 size_t size; 1079 uint32_t main_loc, main_len; 1080 uint32_t reserve_loc, reserve_len; 1081 int error; 1082 1083 /* 1084 * read in VDS space provided by the anchors; if one descriptor read 1085 * fails, try the mirror sector. 1086 * 1087 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1088 * avoids the `compatibility features' of DirectCD that may confuse 1089 * stuff completely. 1090 */ 1091 1092 anchor = ump->anchors[0]; 1093 anchor2 = ump->anchors[1]; 1094 assert(anchor); 1095 1096 if (anchor2) { 1097 size = sizeof(struct extent_ad); 1098 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1099 anchor = anchor2; 1100 /* reserve is specified to be a literal copy of main */ 1101 } 1102 1103 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1104 main_len = udf_rw32(anchor->main_vds_ex.len); 1105 1106 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1107 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1108 1109 error = udf_read_vds_extent(ump, main_loc, main_len); 1110 if (error) { 1111 printf("UDF mount: reading in reserve VDS extent\n"); 1112 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1113 } 1114 1115 return error; 1116 } 1117 1118 /* --------------------------------------------------------------------- */ 1119 1120 /* 1121 * Read in the logical volume integrity sequence pointed to by our logical 1122 * volume descriptor. Its a sequence that can be extended using fields in the 1123 * integrity descriptor itself. On sequential media only one is found, on 1124 * rewritable media a sequence of descriptors can be found as a form of 1125 * history keeping and on non sequential write-once media the chain is vital 1126 * to allow more and more descriptors to be written. The last descriptor 1127 * written in an extent needs to claim space for a new extent. 1128 */ 1129 1130 static int 1131 udf_retrieve_lvint(struct udf_mount *ump) 1132 { 1133 union dscrptr *dscr; 1134 struct logvol_int_desc *lvint; 1135 struct udf_lvintq *trace; 1136 uint32_t lb_size, lbnum, len; 1137 int dscr_type, error, trace_len; 1138 1139 lb_size = udf_rw32(ump->logical_vol->lb_size); 1140 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1141 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1142 1143 /* clean trace */ 1144 memset(ump->lvint_trace, 0, 1145 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1146 1147 trace_len = 0; 1148 trace = ump->lvint_trace; 1149 trace->start = lbnum; 1150 trace->end = lbnum + len/lb_size; 1151 trace->pos = 0; 1152 trace->wpos = 0; 1153 1154 lvint = NULL; 1155 dscr = NULL; 1156 error = 0; 1157 while (len) { 1158 trace->pos = lbnum - trace->start; 1159 trace->wpos = trace->pos + 1; 1160 1161 /* read in our integrity descriptor */ 1162 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1163 if (!error) { 1164 if (dscr == NULL) { 1165 trace->wpos = trace->pos; 1166 break; /* empty terminates */ 1167 } 1168 dscr_type = udf_rw16(dscr->tag.id); 1169 if (dscr_type == TAGID_TERM) { 1170 trace->wpos = trace->pos; 1171 break; /* clean terminator */ 1172 } 1173 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1174 /* fatal... corrupt disc */ 1175 error = ENOENT; 1176 break; 1177 } 1178 if (lvint) 1179 free(lvint, M_UDFVOLD); 1180 lvint = &dscr->lvid; 1181 dscr = NULL; 1182 } /* else hope for the best... maybe the next is ok */ 1183 1184 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1185 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1186 1187 /* proceed sequential */ 1188 lbnum += 1; 1189 len -= lb_size; 1190 1191 /* are we linking to a new piece? */ 1192 if (dscr && lvint->next_extent.len) { 1193 len = udf_rw32(lvint->next_extent.len); 1194 lbnum = udf_rw32(lvint->next_extent.loc); 1195 1196 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1197 /* IEK! segment link full... */ 1198 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1199 error = EINVAL; 1200 } else { 1201 trace++; 1202 trace_len++; 1203 1204 trace->start = lbnum; 1205 trace->end = lbnum + len/lb_size; 1206 trace->pos = 0; 1207 trace->wpos = 0; 1208 } 1209 } 1210 } 1211 1212 /* clean up the mess, esp. when there is an error */ 1213 if (dscr) 1214 free(dscr, M_UDFVOLD); 1215 1216 if (error && lvint) { 1217 free(lvint, M_UDFVOLD); 1218 lvint = NULL; 1219 } 1220 1221 if (!lvint) 1222 error = ENOENT; 1223 1224 ump->logvol_integrity = lvint; 1225 return error; 1226 } 1227 1228 1229 static int 1230 udf_loose_lvint_history(struct udf_mount *ump) 1231 { 1232 union dscrptr **bufs, *dscr, *last_dscr; 1233 struct udf_lvintq *trace, *in_trace, *out_trace; 1234 struct logvol_int_desc *lvint; 1235 uint32_t in_ext, in_pos, in_len; 1236 uint32_t out_ext, out_wpos, out_len; 1237 uint32_t lb_size, packet_size, lb_num; 1238 uint32_t len, start; 1239 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1240 int losing; 1241 int error; 1242 1243 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1244 1245 lb_size = udf_rw32(ump->logical_vol->lb_size); 1246 packet_size = ump->data_track.packet_size; /* XXX data track */ 1247 1248 /* search smallest extent */ 1249 trace = &ump->lvint_trace[0]; 1250 minext = trace->end - trace->start; 1251 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1252 trace = &ump->lvint_trace[ext]; 1253 extlen = trace->end - trace->start; 1254 if (extlen == 0) 1255 break; 1256 minext = MIN(minext, extlen); 1257 } 1258 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1259 /* no sense wiping all */ 1260 if (losing == minext) 1261 losing--; 1262 1263 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1264 1265 /* get buffer for pieces */ 1266 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1267 1268 in_ext = 0; 1269 in_pos = losing; 1270 in_trace = &ump->lvint_trace[in_ext]; 1271 in_len = in_trace->end - in_trace->start; 1272 out_ext = 0; 1273 out_wpos = 0; 1274 out_trace = &ump->lvint_trace[out_ext]; 1275 out_len = out_trace->end - out_trace->start; 1276 1277 last_dscr = NULL; 1278 for(;;) { 1279 out_trace->pos = out_wpos; 1280 out_trace->wpos = out_trace->pos; 1281 if (in_pos >= in_len) { 1282 in_ext++; 1283 in_pos = 0; 1284 in_trace = &ump->lvint_trace[in_ext]; 1285 in_len = in_trace->end - in_trace->start; 1286 } 1287 if (out_wpos >= out_len) { 1288 out_ext++; 1289 out_wpos = 0; 1290 out_trace = &ump->lvint_trace[out_ext]; 1291 out_len = out_trace->end - out_trace->start; 1292 } 1293 /* copy overlap contents */ 1294 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1295 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1296 if (cpy_len == 0) 1297 break; 1298 1299 /* copy */ 1300 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1301 for (cnt = 0; cnt < cpy_len; cnt++) { 1302 /* read in our integrity descriptor */ 1303 lb_num = in_trace->start + in_pos + cnt; 1304 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1305 &dscr); 1306 if (error) { 1307 /* copy last one */ 1308 dscr = last_dscr; 1309 } 1310 bufs[cnt] = dscr; 1311 if (!error) { 1312 if (dscr == NULL) { 1313 out_trace->pos = out_wpos + cnt; 1314 out_trace->wpos = out_trace->pos; 1315 break; /* empty terminates */ 1316 } 1317 dscr_type = udf_rw16(dscr->tag.id); 1318 if (dscr_type == TAGID_TERM) { 1319 out_trace->pos = out_wpos + cnt; 1320 out_trace->wpos = out_trace->pos; 1321 break; /* clean terminator */ 1322 } 1323 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1324 panic( "UDF integrity sequence " 1325 "corrupted while mounted!\n"); 1326 } 1327 last_dscr = dscr; 1328 } 1329 } 1330 1331 /* patch up if first entry was on error */ 1332 if (bufs[0] == NULL) { 1333 for (cnt = 0; cnt < cpy_len; cnt++) 1334 if (bufs[cnt] != NULL) 1335 break; 1336 last_dscr = bufs[cnt]; 1337 for (; cnt > 0; cnt--) { 1338 bufs[cnt] = last_dscr; 1339 } 1340 } 1341 1342 /* glue + write out */ 1343 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1344 for (cnt = 0; cnt < cpy_len; cnt++) { 1345 lb_num = out_trace->start + out_wpos + cnt; 1346 lvint = &bufs[cnt]->lvid; 1347 1348 /* set continuation */ 1349 len = 0; 1350 start = 0; 1351 if (out_wpos + cnt == out_len) { 1352 /* get continuation */ 1353 trace = &ump->lvint_trace[out_ext+1]; 1354 len = trace->end - trace->start; 1355 start = trace->start; 1356 } 1357 lvint->next_extent.len = udf_rw32(len); 1358 lvint->next_extent.loc = udf_rw32(start); 1359 1360 lb_num = trace->start + trace->wpos; 1361 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1362 bufs[cnt], lb_num, lb_num); 1363 DPRINTFIF(VOLUMES, error, 1364 ("error writing lvint lb_num\n")); 1365 } 1366 1367 /* free non repeating descriptors */ 1368 last_dscr = NULL; 1369 for (cnt = 0; cnt < cpy_len; cnt++) { 1370 if (bufs[cnt] != last_dscr) 1371 free(bufs[cnt], M_UDFVOLD); 1372 last_dscr = bufs[cnt]; 1373 } 1374 1375 /* advance */ 1376 in_pos += cpy_len; 1377 out_wpos += cpy_len; 1378 } 1379 1380 free(bufs, M_TEMP); 1381 1382 return 0; 1383 } 1384 1385 1386 static int 1387 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1388 { 1389 struct udf_lvintq *trace; 1390 struct timeval now_v; 1391 struct timespec now_s; 1392 uint32_t sector; 1393 int logvol_integrity; 1394 int space, error; 1395 1396 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1397 1398 again: 1399 /* get free space in last chunk */ 1400 trace = ump->lvint_trace; 1401 while (trace->wpos > (trace->end - trace->start)) { 1402 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1403 "wpos = %d\n", trace->start, trace->end, 1404 trace->pos, trace->wpos)); 1405 trace++; 1406 } 1407 1408 /* check if there is space to append */ 1409 space = (trace->end - trace->start) - trace->wpos; 1410 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1411 "space = %d\n", trace->start, trace->end, trace->pos, 1412 trace->wpos, space)); 1413 1414 /* get state */ 1415 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1416 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1417 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1418 /* don't allow this logvol to be opened */ 1419 /* TODO extent LVINT space if possible */ 1420 return EROFS; 1421 } 1422 } 1423 1424 if (space < 1) { 1425 if (lvflag & UDF_APPENDONLY_LVINT) 1426 return EROFS; 1427 /* loose history by re-writing extents */ 1428 error = udf_loose_lvint_history(ump); 1429 if (error) 1430 return error; 1431 goto again; 1432 } 1433 1434 /* update our integrity descriptor to identify us and timestamp it */ 1435 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1436 microtime(&now_v); 1437 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1438 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1439 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1440 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1441 1442 /* writeout integrity descriptor */ 1443 sector = trace->start + trace->wpos; 1444 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1445 (union dscrptr *) ump->logvol_integrity, 1446 sector, sector); 1447 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1448 if (error) 1449 return error; 1450 1451 /* advance write position */ 1452 trace->wpos++; space--; 1453 if (space >= 1) { 1454 /* append terminator */ 1455 sector = trace->start + trace->wpos; 1456 error = udf_write_terminator(ump, sector); 1457 1458 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1459 } 1460 1461 space = (trace->end - trace->start) - trace->wpos; 1462 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1463 "space = %d\n", trace->start, trace->end, trace->pos, 1464 trace->wpos, space)); 1465 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1466 "successfull\n")); 1467 1468 return error; 1469 } 1470 1471 /* --------------------------------------------------------------------- */ 1472 1473 static int 1474 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1475 { 1476 union dscrptr *dscr; 1477 /* struct udf_args *args = &ump->mount_args; */ 1478 struct part_desc *partd; 1479 struct part_hdr_desc *parthdr; 1480 struct udf_bitmap *bitmap; 1481 uint32_t phys_part; 1482 uint32_t lb_num, len; 1483 int error, dscr_type; 1484 1485 /* unallocated space map */ 1486 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1487 partd = ump->partitions[phys_part]; 1488 if (partd == NULL) 1489 continue; 1490 parthdr = &partd->_impl_use.part_hdr; 1491 1492 lb_num = udf_rw32(partd->start_loc); 1493 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1494 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1495 if (len == 0) 1496 continue; 1497 1498 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1499 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1500 if (!error && dscr) { 1501 /* analyse */ 1502 dscr_type = udf_rw16(dscr->tag.id); 1503 if (dscr_type == TAGID_SPACE_BITMAP) { 1504 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1505 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1506 1507 /* fill in ump->part_unalloc_bits */ 1508 bitmap = &ump->part_unalloc_bits[phys_part]; 1509 bitmap->blob = (uint8_t *) dscr; 1510 bitmap->bits = dscr->sbd.data; 1511 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1512 bitmap->pages = NULL; /* TODO */ 1513 bitmap->data_pos = 0; 1514 bitmap->metadata_pos = 0; 1515 } else { 1516 free(dscr, M_UDFVOLD); 1517 1518 printf( "UDF mount: error reading unallocated " 1519 "space bitmap\n"); 1520 return EROFS; 1521 } 1522 } else { 1523 /* blank not allowed */ 1524 printf("UDF mount: blank unallocated space bitmap\n"); 1525 return EROFS; 1526 } 1527 } 1528 1529 /* unallocated space table (not supported) */ 1530 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1531 partd = ump->partitions[phys_part]; 1532 if (partd == NULL) 1533 continue; 1534 parthdr = &partd->_impl_use.part_hdr; 1535 1536 len = udf_rw32(parthdr->unalloc_space_table.len); 1537 if (len) { 1538 printf("UDF mount: space tables not supported\n"); 1539 return EROFS; 1540 } 1541 } 1542 1543 /* freed space map */ 1544 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1545 partd = ump->partitions[phys_part]; 1546 if (partd == NULL) 1547 continue; 1548 parthdr = &partd->_impl_use.part_hdr; 1549 1550 /* freed space map */ 1551 lb_num = udf_rw32(partd->start_loc); 1552 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1553 len = udf_rw32(parthdr->freed_space_bitmap.len); 1554 if (len == 0) 1555 continue; 1556 1557 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1558 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1559 if (!error && dscr) { 1560 /* analyse */ 1561 dscr_type = udf_rw16(dscr->tag.id); 1562 if (dscr_type == TAGID_SPACE_BITMAP) { 1563 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1564 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1565 1566 /* fill in ump->part_freed_bits */ 1567 bitmap = &ump->part_unalloc_bits[phys_part]; 1568 bitmap->blob = (uint8_t *) dscr; 1569 bitmap->bits = dscr->sbd.data; 1570 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1571 bitmap->pages = NULL; /* TODO */ 1572 bitmap->data_pos = 0; 1573 bitmap->metadata_pos = 0; 1574 } else { 1575 free(dscr, M_UDFVOLD); 1576 1577 printf( "UDF mount: error reading freed " 1578 "space bitmap\n"); 1579 return EROFS; 1580 } 1581 } else { 1582 /* blank not allowed */ 1583 printf("UDF mount: blank freed space bitmap\n"); 1584 return EROFS; 1585 } 1586 } 1587 1588 /* freed space table (not supported) */ 1589 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1590 partd = ump->partitions[phys_part]; 1591 if (partd == NULL) 1592 continue; 1593 parthdr = &partd->_impl_use.part_hdr; 1594 1595 len = udf_rw32(parthdr->freed_space_table.len); 1596 if (len) { 1597 printf("UDF mount: space tables not supported\n"); 1598 return EROFS; 1599 } 1600 } 1601 1602 return 0; 1603 } 1604 1605 1606 /* TODO implement async writeout */ 1607 int 1608 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1609 { 1610 union dscrptr *dscr; 1611 /* struct udf_args *args = &ump->mount_args; */ 1612 struct part_desc *partd; 1613 struct part_hdr_desc *parthdr; 1614 uint32_t phys_part; 1615 uint32_t lb_num, len, ptov; 1616 int error_all, error; 1617 1618 error_all = 0; 1619 /* unallocated space map */ 1620 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1621 partd = ump->partitions[phys_part]; 1622 if (partd == NULL) 1623 continue; 1624 parthdr = &partd->_impl_use.part_hdr; 1625 1626 ptov = udf_rw32(partd->start_loc); 1627 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1628 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1629 if (len == 0) 1630 continue; 1631 1632 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1633 lb_num + ptov)); 1634 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1635 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1636 (union dscrptr *) dscr, 1637 ptov + lb_num, lb_num); 1638 if (error) { 1639 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1640 error_all = error; 1641 } 1642 } 1643 1644 /* freed space map */ 1645 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1646 partd = ump->partitions[phys_part]; 1647 if (partd == NULL) 1648 continue; 1649 parthdr = &partd->_impl_use.part_hdr; 1650 1651 /* freed space map */ 1652 ptov = udf_rw32(partd->start_loc); 1653 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1654 len = udf_rw32(parthdr->freed_space_bitmap.len); 1655 if (len == 0) 1656 continue; 1657 1658 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1659 lb_num + ptov)); 1660 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1661 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1662 (union dscrptr *) dscr, 1663 ptov + lb_num, lb_num); 1664 if (error) { 1665 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1666 error_all = error; 1667 } 1668 } 1669 1670 return error_all; 1671 } 1672 1673 1674 static int 1675 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1676 { 1677 struct udf_node *bitmap_node; 1678 union dscrptr *dscr; 1679 struct udf_bitmap *bitmap; 1680 uint64_t inflen; 1681 int error, dscr_type; 1682 1683 bitmap_node = ump->metadatabitmap_node; 1684 1685 /* only read in when metadata bitmap node is read in */ 1686 if (bitmap_node == NULL) 1687 return 0; 1688 1689 if (bitmap_node->fe) { 1690 inflen = udf_rw64(bitmap_node->fe->inf_len); 1691 } else { 1692 KASSERT(bitmap_node->efe); 1693 inflen = udf_rw64(bitmap_node->efe->inf_len); 1694 } 1695 1696 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1697 "%"PRIu64" bytes\n", inflen)); 1698 1699 /* allocate space for bitmap */ 1700 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1701 if (!dscr) 1702 return ENOMEM; 1703 1704 /* set vnode type to regular file or we can't read from it! */ 1705 bitmap_node->vnode->v_type = VREG; 1706 1707 /* read in complete metadata bitmap file */ 1708 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1709 dscr, 1710 inflen, 0, 1711 UIO_SYSSPACE, 1712 IO_SYNC | IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1713 NULL, NULL); 1714 if (error) { 1715 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1716 goto errorout; 1717 } 1718 1719 /* analyse */ 1720 dscr_type = udf_rw16(dscr->tag.id); 1721 if (dscr_type == TAGID_SPACE_BITMAP) { 1722 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1723 ump->metadata_unalloc_dscr = &dscr->sbd; 1724 1725 /* fill in bitmap bits */ 1726 bitmap = &ump->metadata_unalloc_bits; 1727 bitmap->blob = (uint8_t *) dscr; 1728 bitmap->bits = dscr->sbd.data; 1729 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1730 bitmap->pages = NULL; /* TODO */ 1731 bitmap->data_pos = 0; 1732 bitmap->metadata_pos = 0; 1733 } else { 1734 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1735 goto errorout; 1736 } 1737 1738 return 0; 1739 1740 errorout: 1741 free(dscr, M_UDFVOLD); 1742 printf( "UDF mount: error reading unallocated " 1743 "space bitmap for metadata partition\n"); 1744 return EROFS; 1745 } 1746 1747 1748 int 1749 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1750 { 1751 struct udf_node *bitmap_node; 1752 union dscrptr *dscr; 1753 uint64_t inflen, new_inflen; 1754 int dummy, error; 1755 1756 bitmap_node = ump->metadatabitmap_node; 1757 1758 /* only write out when metadata bitmap node is known */ 1759 if (bitmap_node == NULL) 1760 return 0; 1761 1762 if (bitmap_node->fe) { 1763 inflen = udf_rw64(bitmap_node->fe->inf_len); 1764 } else { 1765 KASSERT(bitmap_node->efe); 1766 inflen = udf_rw64(bitmap_node->efe->inf_len); 1767 } 1768 1769 /* reduce length to zero */ 1770 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1771 new_inflen = udf_tagsize(dscr, 1); 1772 1773 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap from " 1774 "%"PRIu64" to %"PRIu64" bytes\n", inflen, new_inflen)); 1775 1776 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1777 if (error) 1778 printf("Error resizing metadata space bitmap\n"); 1779 1780 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1781 dscr, 1782 new_inflen, 0, 1783 UIO_SYSSPACE, 1784 IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1785 NULL, NULL); 1786 1787 bitmap_node->i_flags |= IN_MODIFIED; 1788 vflushbuf(bitmap_node->vnode, 1 /* sync */); 1789 1790 error = VOP_FSYNC(bitmap_node->vnode, 1791 FSCRED, FSYNC_WAIT, 0, 0); 1792 1793 if (error) 1794 printf( "Error writing out metadata partition unalloced " 1795 "space bitmap!\n"); 1796 1797 return error; 1798 } 1799 1800 1801 /* --------------------------------------------------------------------- */ 1802 1803 /* 1804 * Checks if ump's vds information is correct and complete 1805 */ 1806 1807 int 1808 udf_process_vds(struct udf_mount *ump) { 1809 union udf_pmap *mapping; 1810 /* struct udf_args *args = &ump->mount_args; */ 1811 struct logvol_int_desc *lvint; 1812 struct udf_logvol_info *lvinfo; 1813 struct part_desc *part; 1814 uint32_t n_pm, mt_l; 1815 uint8_t *pmap_pos; 1816 char *domain_name, *map_name; 1817 const char *check_name; 1818 char bits[128]; 1819 int pmap_stype, pmap_size; 1820 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1821 int n_phys, n_virt, n_spar, n_meta; 1822 int len, error; 1823 1824 if (ump == NULL) 1825 return ENOENT; 1826 1827 /* we need at least an anchor (trivial, but for safety) */ 1828 if (ump->anchors[0] == NULL) 1829 return EINVAL; 1830 1831 /* we need at least one primary and one logical volume descriptor */ 1832 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1833 return EINVAL; 1834 1835 /* we need at least one partition descriptor */ 1836 if (ump->partitions[0] == NULL) 1837 return EINVAL; 1838 1839 /* check logical volume sector size verses device sector size */ 1840 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1841 printf("UDF mount: format violation, lb_size != sector size\n"); 1842 return EINVAL; 1843 } 1844 1845 /* check domain name */ 1846 domain_name = ump->logical_vol->domain_id.id; 1847 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1848 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1849 return EINVAL; 1850 } 1851 1852 /* retrieve logical volume integrity sequence */ 1853 error = udf_retrieve_lvint(ump); 1854 1855 /* 1856 * We need at least one logvol integrity descriptor recorded. Note 1857 * that its OK to have an open logical volume integrity here. The VAT 1858 * will close/update the integrity. 1859 */ 1860 if (ump->logvol_integrity == NULL) 1861 return EINVAL; 1862 1863 /* process derived structures */ 1864 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1865 lvint = ump->logvol_integrity; 1866 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1867 ump->logvol_info = lvinfo; 1868 1869 /* TODO check udf versions? */ 1870 1871 /* 1872 * check logvol mappings: effective virt->log partmap translation 1873 * check and recording of the mapping results. Saves expensive 1874 * strncmp() in tight places. 1875 */ 1876 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1877 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1878 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1879 pmap_pos = ump->logical_vol->maps; 1880 1881 if (n_pm > UDF_PMAPS) { 1882 printf("UDF mount: too many mappings\n"); 1883 return EINVAL; 1884 } 1885 1886 /* count types and set partition numbers */ 1887 ump->data_part = ump->node_part = ump->fids_part = 0; 1888 n_phys = n_virt = n_spar = n_meta = 0; 1889 for (log_part = 0; log_part < n_pm; log_part++) { 1890 mapping = (union udf_pmap *) pmap_pos; 1891 pmap_stype = pmap_pos[0]; 1892 pmap_size = pmap_pos[1]; 1893 switch (pmap_stype) { 1894 case 1: /* physical mapping */ 1895 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1896 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1897 pmap_type = UDF_VTOP_TYPE_PHYS; 1898 n_phys++; 1899 ump->data_part = log_part; 1900 ump->node_part = log_part; 1901 ump->fids_part = log_part; 1902 break; 1903 case 2: /* virtual/sparable/meta mapping */ 1904 map_name = mapping->pm2.part_id.id; 1905 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1906 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1907 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1908 len = UDF_REGID_ID_SIZE; 1909 1910 check_name = "*UDF Virtual Partition"; 1911 if (strncmp(map_name, check_name, len) == 0) { 1912 pmap_type = UDF_VTOP_TYPE_VIRT; 1913 n_virt++; 1914 ump->node_part = log_part; 1915 break; 1916 } 1917 check_name = "*UDF Sparable Partition"; 1918 if (strncmp(map_name, check_name, len) == 0) { 1919 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1920 n_spar++; 1921 ump->data_part = log_part; 1922 ump->node_part = log_part; 1923 ump->fids_part = log_part; 1924 break; 1925 } 1926 check_name = "*UDF Metadata Partition"; 1927 if (strncmp(map_name, check_name, len) == 0) { 1928 pmap_type = UDF_VTOP_TYPE_META; 1929 n_meta++; 1930 ump->node_part = log_part; 1931 ump->fids_part = log_part; 1932 break; 1933 } 1934 break; 1935 default: 1936 return EINVAL; 1937 } 1938 1939 /* 1940 * BUGALERT: some rogue implementations use random physical 1941 * partion numbers to break other implementations so lookup 1942 * the number. 1943 */ 1944 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1945 part = ump->partitions[phys_part]; 1946 if (part == NULL) 1947 continue; 1948 if (udf_rw16(part->part_num) == raw_phys_part) 1949 break; 1950 } 1951 1952 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1953 raw_phys_part, phys_part, pmap_type)); 1954 1955 if (phys_part == UDF_PARTITIONS) 1956 return EINVAL; 1957 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1958 return EINVAL; 1959 1960 ump->vtop [log_part] = phys_part; 1961 ump->vtop_tp[log_part] = pmap_type; 1962 1963 pmap_pos += pmap_size; 1964 } 1965 /* not winning the beauty contest */ 1966 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1967 1968 /* test some basic UDF assertions/requirements */ 1969 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1970 return EINVAL; 1971 1972 if (n_virt) { 1973 if ((n_phys == 0) || n_spar || n_meta) 1974 return EINVAL; 1975 } 1976 if (n_spar + n_phys == 0) 1977 return EINVAL; 1978 1979 /* select allocation type for each logical partition */ 1980 for (log_part = 0; log_part < n_pm; log_part++) { 1981 maps_on = ump->vtop[log_part]; 1982 switch (ump->vtop_tp[log_part]) { 1983 case UDF_VTOP_TYPE_PHYS : 1984 assert(maps_on == log_part); 1985 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1986 break; 1987 case UDF_VTOP_TYPE_VIRT : 1988 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 1989 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1990 break; 1991 case UDF_VTOP_TYPE_SPARABLE : 1992 assert(maps_on == log_part); 1993 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1994 break; 1995 case UDF_VTOP_TYPE_META : 1996 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 1997 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1998 /* special case for UDF 2.60 */ 1999 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 2000 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 2001 } 2002 break; 2003 default: 2004 panic("bad alloction type in udf's ump->vtop\n"); 2005 } 2006 } 2007 2008 /* determine logical volume open/closure actions */ 2009 if (n_virt) { 2010 ump->lvopen = 0; 2011 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 2012 ump->lvopen |= UDF_OPEN_SESSION ; 2013 ump->lvclose = UDF_WRITE_VAT; 2014 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 2015 ump->lvclose |= UDF_CLOSE_SESSION; 2016 } else { 2017 /* `normal' rewritable or non sequential media */ 2018 ump->lvopen = UDF_WRITE_LVINT; 2019 ump->lvclose = UDF_WRITE_LVINT; 2020 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 2021 ump->lvopen |= UDF_APPENDONLY_LVINT; 2022 } 2023 2024 /* 2025 * Determine sheduler error behaviour. For virtual partions, update 2026 * the trackinfo; for sparable partitions replace a whole block on the 2027 * sparable table. Allways requeue. 2028 */ 2029 ump->lvreadwrite = 0; 2030 if (n_virt) 2031 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 2032 if (n_spar) 2033 ump->lvreadwrite = UDF_REMAP_BLOCK; 2034 2035 /* 2036 * Select our sheduler 2037 */ 2038 ump->strategy = &udf_strat_rmw; 2039 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 2040 ump->strategy = &udf_strat_sequential; 2041 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 2042 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 2043 ump->strategy = &udf_strat_direct; 2044 if (n_spar) 2045 ump->strategy = &udf_strat_rmw; 2046 2047 #if 0 2048 /* read-only access won't benefit from the other shedulers */ 2049 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 2050 ump->strategy = &udf_strat_direct; 2051 #endif 2052 2053 /* print results */ 2054 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2055 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2056 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2057 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2058 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2059 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2060 2061 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 2062 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2063 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 2064 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2065 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 2066 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2067 2068 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2069 (ump->strategy == &udf_strat_direct) ? "Direct" : 2070 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2071 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2072 2073 /* signal its OK for now */ 2074 return 0; 2075 } 2076 2077 /* --------------------------------------------------------------------- */ 2078 2079 /* 2080 * Update logical volume name in all structures that keep a record of it. We 2081 * use memmove since each of them might be specified as a source. 2082 * 2083 * Note that it doesn't update the VAT structure! 2084 */ 2085 2086 static void 2087 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2088 { 2089 struct logvol_desc *lvd = NULL; 2090 struct fileset_desc *fsd = NULL; 2091 struct udf_lv_info *lvi = NULL; 2092 2093 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2094 lvd = ump->logical_vol; 2095 fsd = ump->fileset_desc; 2096 if (ump->implementation) 2097 lvi = &ump->implementation->_impl_use.lv_info; 2098 2099 /* logvol's id might be specified as origional so use memmove here */ 2100 memmove(lvd->logvol_id, logvol_id, 128); 2101 if (fsd) 2102 memmove(fsd->logvol_id, logvol_id, 128); 2103 if (lvi) 2104 memmove(lvi->logvol_id, logvol_id, 128); 2105 } 2106 2107 /* --------------------------------------------------------------------- */ 2108 2109 void 2110 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2111 uint32_t sector) 2112 { 2113 assert(ump->logical_vol); 2114 2115 tag->id = udf_rw16(tagid); 2116 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2117 tag->cksum = 0; 2118 tag->reserved = 0; 2119 tag->serial_num = ump->logical_vol->tag.serial_num; 2120 tag->tag_loc = udf_rw32(sector); 2121 } 2122 2123 2124 uint64_t 2125 udf_advance_uniqueid(struct udf_mount *ump) 2126 { 2127 uint64_t unique_id; 2128 2129 mutex_enter(&ump->logvol_mutex); 2130 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2131 if (unique_id < 0x10) 2132 unique_id = 0x10; 2133 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2134 mutex_exit(&ump->logvol_mutex); 2135 2136 return unique_id; 2137 } 2138 2139 2140 static void 2141 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2142 { 2143 struct udf_mount *ump = udf_node->ump; 2144 uint32_t num_dirs, num_files; 2145 int udf_file_type; 2146 2147 /* get file type */ 2148 if (udf_node->fe) { 2149 udf_file_type = udf_node->fe->icbtag.file_type; 2150 } else { 2151 udf_file_type = udf_node->efe->icbtag.file_type; 2152 } 2153 2154 /* adjust file count */ 2155 mutex_enter(&ump->allocate_mutex); 2156 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2157 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2158 ump->logvol_info->num_directories = 2159 udf_rw32((num_dirs + sign)); 2160 } else { 2161 num_files = udf_rw32(ump->logvol_info->num_files); 2162 ump->logvol_info->num_files = 2163 udf_rw32((num_files + sign)); 2164 } 2165 mutex_exit(&ump->allocate_mutex); 2166 } 2167 2168 2169 void 2170 udf_osta_charset(struct charspec *charspec) 2171 { 2172 bzero(charspec, sizeof(struct charspec)); 2173 charspec->type = 0; 2174 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2175 } 2176 2177 2178 /* first call udf_set_regid and then the suffix */ 2179 void 2180 udf_set_regid(struct regid *regid, char const *name) 2181 { 2182 bzero(regid, sizeof(struct regid)); 2183 regid->flags = 0; /* not dirty and not protected */ 2184 strcpy((char *) regid->id, name); 2185 } 2186 2187 2188 void 2189 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2190 { 2191 uint16_t *ver; 2192 2193 ver = (uint16_t *) regid->id_suffix; 2194 *ver = ump->logvol_info->min_udf_readver; 2195 } 2196 2197 2198 void 2199 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2200 { 2201 uint16_t *ver; 2202 2203 ver = (uint16_t *) regid->id_suffix; 2204 *ver = ump->logvol_info->min_udf_readver; 2205 2206 regid->id_suffix[2] = 4; /* unix */ 2207 regid->id_suffix[3] = 8; /* NetBSD */ 2208 } 2209 2210 2211 void 2212 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2213 { 2214 regid->id_suffix[0] = 4; /* unix */ 2215 regid->id_suffix[1] = 8; /* NetBSD */ 2216 } 2217 2218 2219 void 2220 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2221 { 2222 regid->id_suffix[0] = APP_VERSION_MAIN; 2223 regid->id_suffix[1] = APP_VERSION_SUB; 2224 } 2225 2226 static int 2227 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2228 struct long_ad *parent, uint64_t unique_id) 2229 { 2230 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2231 int fidsize = 40; 2232 2233 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2234 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2235 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2236 fid->icb = *parent; 2237 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2238 fid->tag.desc_crc_len = udf_rw16(fidsize - UDF_DESC_TAG_LENGTH); 2239 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2240 2241 return fidsize; 2242 } 2243 2244 /* --------------------------------------------------------------------- */ 2245 2246 /* 2247 * Extended attribute support. UDF knows of 3 places for extended attributes: 2248 * 2249 * (a) inside the file's (e)fe in the length of the extended attribute area 2250 * before the allocation descriptors/filedata 2251 * 2252 * (b) in a file referenced by (e)fe->ext_attr_icb and 2253 * 2254 * (c) in the e(fe)'s associated stream directory that can hold various 2255 * sub-files. In the stream directory a few fixed named subfiles are reserved 2256 * for NT/Unix ACL's and OS/2 attributes. 2257 * 2258 * NOTE: Extended attributes are read randomly but allways written 2259 * *atomicaly*. For ACL's this interface is propably different but not known 2260 * to me yet. 2261 * 2262 * Order of extended attributes in a space : 2263 * ECMA 167 EAs 2264 * Non block aligned Implementation Use EAs 2265 * Block aligned Implementation Use EAs 2266 * Application Use EAs 2267 */ 2268 2269 static int 2270 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2271 { 2272 uint16_t *spos; 2273 2274 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2275 /* checksum valid? */ 2276 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2277 spos = (uint16_t *) implext->data; 2278 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2279 return EINVAL; 2280 } 2281 return 0; 2282 } 2283 2284 static void 2285 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2286 { 2287 uint16_t *spos; 2288 2289 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2290 /* set checksum */ 2291 spos = (uint16_t *) implext->data; 2292 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2293 } 2294 } 2295 2296 2297 int 2298 udf_extattr_search_intern(struct udf_node *node, 2299 uint32_t sattr, char const *sattrname, 2300 uint32_t *offsetp, uint32_t *lengthp) 2301 { 2302 struct extattrhdr_desc *eahdr; 2303 struct extattr_entry *attrhdr; 2304 struct impl_extattr_entry *implext; 2305 uint32_t offset, a_l, sector_size; 2306 int32_t l_ea; 2307 uint8_t *pos; 2308 int error; 2309 2310 /* get mountpoint */ 2311 sector_size = node->ump->discinfo.sector_size; 2312 2313 /* get information from fe/efe */ 2314 if (node->fe) { 2315 l_ea = udf_rw32(node->fe->l_ea); 2316 eahdr = (struct extattrhdr_desc *) node->fe->data; 2317 } else { 2318 assert(node->efe); 2319 l_ea = udf_rw32(node->efe->l_ea); 2320 eahdr = (struct extattrhdr_desc *) node->efe->data; 2321 } 2322 2323 /* something recorded here? */ 2324 if (l_ea == 0) 2325 return ENOENT; 2326 2327 /* check extended attribute tag; what to do if it fails? */ 2328 error = udf_check_tag(eahdr); 2329 if (error) 2330 return EINVAL; 2331 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2332 return EINVAL; 2333 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2334 if (error) 2335 return EINVAL; 2336 2337 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2338 2339 /* looking for Ecma-167 attributes? */ 2340 offset = sizeof(struct extattrhdr_desc); 2341 2342 /* looking for either implemenation use or application use */ 2343 if (sattr == 2048) { /* [4/48.10.8] */ 2344 offset = udf_rw32(eahdr->impl_attr_loc); 2345 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2346 return ENOENT; 2347 } 2348 if (sattr == 65536) { /* [4/48.10.9] */ 2349 offset = udf_rw32(eahdr->appl_attr_loc); 2350 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2351 return ENOENT; 2352 } 2353 2354 /* paranoia check offset and l_ea */ 2355 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2356 return EINVAL; 2357 2358 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2359 2360 /* find our extended attribute */ 2361 l_ea -= offset; 2362 pos = (uint8_t *) eahdr + offset; 2363 2364 while (l_ea >= sizeof(struct extattr_entry)) { 2365 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2366 attrhdr = (struct extattr_entry *) pos; 2367 implext = (struct impl_extattr_entry *) pos; 2368 2369 /* get complete attribute length and check for roque values */ 2370 a_l = udf_rw32(attrhdr->a_l); 2371 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2372 udf_rw32(attrhdr->type), 2373 attrhdr->subtype, a_l, l_ea)); 2374 if ((a_l == 0) || (a_l > l_ea)) 2375 return EINVAL; 2376 2377 if (attrhdr->type != sattr) 2378 goto next_attribute; 2379 2380 /* we might have found it! */ 2381 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2382 *offsetp = offset; 2383 *lengthp = a_l; 2384 return 0; /* success */ 2385 } 2386 2387 /* 2388 * Implementation use and application use extended attributes 2389 * have a name to identify. They share the same structure only 2390 * UDF implementation use extended attributes have a checksum 2391 * we need to check 2392 */ 2393 2394 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2395 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2396 /* we have found our appl/implementation attribute */ 2397 *offsetp = offset; 2398 *lengthp = a_l; 2399 return 0; /* success */ 2400 } 2401 2402 next_attribute: 2403 /* next attribute */ 2404 pos += a_l; 2405 l_ea -= a_l; 2406 offset += a_l; 2407 } 2408 /* not found */ 2409 return ENOENT; 2410 } 2411 2412 2413 static void 2414 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2415 struct extattr_entry *extattr) 2416 { 2417 struct file_entry *fe; 2418 struct extfile_entry *efe; 2419 struct extattrhdr_desc *extattrhdr; 2420 struct impl_extattr_entry *implext; 2421 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2422 uint32_t *l_eap, l_ad; 2423 uint16_t *spos; 2424 uint8_t *bpos, *data; 2425 2426 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2427 fe = &dscr->fe; 2428 data = fe->data; 2429 l_eap = &fe->l_ea; 2430 l_ad = udf_rw32(fe->l_ad); 2431 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2432 efe = &dscr->efe; 2433 data = efe->data; 2434 l_eap = &efe->l_ea; 2435 l_ad = udf_rw32(efe->l_ad); 2436 } else { 2437 panic("Bad tag passed to udf_extattr_insert_internal"); 2438 } 2439 2440 /* can't append already written to file descriptors yet */ 2441 assert(l_ad == 0); 2442 2443 /* should have a header! */ 2444 extattrhdr = (struct extattrhdr_desc *) data; 2445 l_ea = udf_rw32(*l_eap); 2446 if (l_ea == 0) { 2447 /* create empty extended attribute header */ 2448 exthdr_len = sizeof(struct extattrhdr_desc); 2449 2450 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2451 /* loc */ 0); 2452 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2453 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2454 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2455 2456 /* record extended attribute header length */ 2457 l_ea = exthdr_len; 2458 *l_eap = udf_rw32(l_ea); 2459 } 2460 2461 /* extract locations */ 2462 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2463 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2464 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2465 impl_attr_loc = l_ea; 2466 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2467 appl_attr_loc = l_ea; 2468 2469 /* Ecma 167 EAs */ 2470 if (udf_rw32(extattr->type) < 2048) { 2471 assert(impl_attr_loc == l_ea); 2472 assert(appl_attr_loc == l_ea); 2473 } 2474 2475 /* implementation use extended attributes */ 2476 if (udf_rw32(extattr->type) == 2048) { 2477 assert(appl_attr_loc == l_ea); 2478 2479 /* calculate and write extended attribute header checksum */ 2480 implext = (struct impl_extattr_entry *) extattr; 2481 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2482 spos = (uint16_t *) implext->data; 2483 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2484 } 2485 2486 /* application use extended attributes */ 2487 assert(udf_rw32(extattr->type) != 65536); 2488 assert(appl_attr_loc == l_ea); 2489 2490 /* append the attribute at the end of the current space */ 2491 bpos = data + udf_rw32(*l_eap); 2492 a_l = udf_rw32(extattr->a_l); 2493 2494 /* update impl. attribute locations */ 2495 if (udf_rw32(extattr->type) < 2048) { 2496 impl_attr_loc = l_ea + a_l; 2497 appl_attr_loc = l_ea + a_l; 2498 } 2499 if (udf_rw32(extattr->type) == 2048) { 2500 appl_attr_loc = l_ea + a_l; 2501 } 2502 2503 /* copy and advance */ 2504 memcpy(bpos, extattr, a_l); 2505 l_ea += a_l; 2506 *l_eap = udf_rw32(l_ea); 2507 2508 /* do the `dance` again backwards */ 2509 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2510 if (impl_attr_loc == l_ea) 2511 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2512 if (appl_attr_loc == l_ea) 2513 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2514 } 2515 2516 /* store offsets */ 2517 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2518 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2519 } 2520 2521 2522 /* --------------------------------------------------------------------- */ 2523 2524 static int 2525 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2526 { 2527 struct udf_mount *ump; 2528 struct udf_logvol_info *lvinfo; 2529 struct impl_extattr_entry *implext; 2530 struct vatlvext_extattr_entry lvext; 2531 const char *extstr = "*UDF VAT LVExtension"; 2532 uint64_t vat_uniqueid; 2533 uint32_t offset, a_l; 2534 uint8_t *ea_start, *lvextpos; 2535 int error; 2536 2537 /* get mountpoint and lvinfo */ 2538 ump = vat_node->ump; 2539 lvinfo = ump->logvol_info; 2540 2541 /* get information from fe/efe */ 2542 if (vat_node->fe) { 2543 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2544 ea_start = vat_node->fe->data; 2545 } else { 2546 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2547 ea_start = vat_node->efe->data; 2548 } 2549 2550 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2551 if (error) 2552 return error; 2553 2554 implext = (struct impl_extattr_entry *) (ea_start + offset); 2555 error = udf_impl_extattr_check(implext); 2556 if (error) 2557 return error; 2558 2559 /* paranoia */ 2560 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2561 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2562 return EINVAL; 2563 } 2564 2565 /* 2566 * we have found our "VAT LVExtension attribute. BUT due to a 2567 * bug in the specification it might not be word aligned so 2568 * copy first to avoid panics on some machines (!!) 2569 */ 2570 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2571 lvextpos = implext->data + udf_rw32(implext->iu_l); 2572 memcpy(&lvext, lvextpos, sizeof(lvext)); 2573 2574 /* check if it was updated the last time */ 2575 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2576 lvinfo->num_files = lvext.num_files; 2577 lvinfo->num_directories = lvext.num_directories; 2578 udf_update_logvolname(ump, lvext.logvol_id); 2579 } else { 2580 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2581 /* replace VAT LVExt by free space EA */ 2582 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2583 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2584 udf_calc_impl_extattr_checksum(implext); 2585 } 2586 2587 return 0; 2588 } 2589 2590 2591 static int 2592 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2593 { 2594 struct udf_mount *ump; 2595 struct udf_logvol_info *lvinfo; 2596 struct impl_extattr_entry *implext; 2597 struct vatlvext_extattr_entry lvext; 2598 const char *extstr = "*UDF VAT LVExtension"; 2599 uint64_t vat_uniqueid; 2600 uint32_t offset, a_l; 2601 uint8_t *ea_start, *lvextpos; 2602 int error; 2603 2604 /* get mountpoint and lvinfo */ 2605 ump = vat_node->ump; 2606 lvinfo = ump->logvol_info; 2607 2608 /* get information from fe/efe */ 2609 if (vat_node->fe) { 2610 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2611 ea_start = vat_node->fe->data; 2612 } else { 2613 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2614 ea_start = vat_node->efe->data; 2615 } 2616 2617 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2618 if (error) 2619 return error; 2620 /* found, it existed */ 2621 2622 /* paranoia */ 2623 implext = (struct impl_extattr_entry *) (ea_start + offset); 2624 error = udf_impl_extattr_check(implext); 2625 if (error) { 2626 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2627 return error; 2628 } 2629 /* it is correct */ 2630 2631 /* 2632 * we have found our "VAT LVExtension attribute. BUT due to a 2633 * bug in the specification it might not be word aligned so 2634 * copy first to avoid panics on some machines (!!) 2635 */ 2636 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2637 lvextpos = implext->data + udf_rw32(implext->iu_l); 2638 2639 lvext.unique_id_chk = vat_uniqueid; 2640 lvext.num_files = lvinfo->num_files; 2641 lvext.num_directories = lvinfo->num_directories; 2642 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2643 2644 memcpy(lvextpos, &lvext, sizeof(lvext)); 2645 2646 return 0; 2647 } 2648 2649 /* --------------------------------------------------------------------- */ 2650 2651 int 2652 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2653 { 2654 struct udf_mount *ump = vat_node->ump; 2655 2656 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2657 return EINVAL; 2658 2659 memcpy(blob, ump->vat_table + offset, size); 2660 return 0; 2661 } 2662 2663 int 2664 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2665 { 2666 struct udf_mount *ump = vat_node->ump; 2667 uint32_t offset_high; 2668 uint8_t *new_vat_table; 2669 2670 /* extent VAT allocation if needed */ 2671 offset_high = offset + size; 2672 if (offset_high >= ump->vat_table_alloc_len) { 2673 /* realloc */ 2674 new_vat_table = realloc(ump->vat_table, 2675 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2676 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2677 if (!new_vat_table) { 2678 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2679 return ENOMEM; 2680 } 2681 ump->vat_table = new_vat_table; 2682 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2683 } 2684 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2685 2686 memcpy(ump->vat_table + offset, blob, size); 2687 return 0; 2688 } 2689 2690 /* --------------------------------------------------------------------- */ 2691 2692 /* TODO support previous VAT location writeout */ 2693 static int 2694 udf_update_vat_descriptor(struct udf_mount *ump) 2695 { 2696 struct udf_node *vat_node = ump->vat_node; 2697 struct udf_logvol_info *lvinfo = ump->logvol_info; 2698 struct icb_tag *icbtag; 2699 struct udf_oldvat_tail *oldvat_tl; 2700 struct udf_vat *vat; 2701 uint64_t unique_id; 2702 uint32_t lb_size; 2703 uint8_t *raw_vat; 2704 int filetype, error; 2705 2706 KASSERT(vat_node); 2707 KASSERT(lvinfo); 2708 lb_size = udf_rw32(ump->logical_vol->lb_size); 2709 2710 /* get our new unique_id */ 2711 unique_id = udf_advance_uniqueid(ump); 2712 2713 /* get information from fe/efe */ 2714 if (vat_node->fe) { 2715 icbtag = &vat_node->fe->icbtag; 2716 vat_node->fe->unique_id = udf_rw64(unique_id); 2717 } else { 2718 icbtag = &vat_node->efe->icbtag; 2719 vat_node->efe->unique_id = udf_rw64(unique_id); 2720 } 2721 2722 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2723 filetype = icbtag->file_type; 2724 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2725 2726 /* allocate piece to process head or tail of VAT file */ 2727 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2728 2729 if (filetype == 0) { 2730 /* 2731 * Update "*UDF VAT LVExtension" extended attribute from the 2732 * lvint if present. 2733 */ 2734 udf_update_vat_extattr_from_lvid(vat_node); 2735 2736 /* setup identifying regid */ 2737 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2738 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2739 2740 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2741 udf_add_udf_regid(ump, &oldvat_tl->id); 2742 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2743 2744 /* write out new tail of virtual allocation table file */ 2745 error = udf_vat_write(vat_node, raw_vat, 2746 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2747 } else { 2748 /* compose the VAT2 header */ 2749 vat = (struct udf_vat *) raw_vat; 2750 memset(vat, 0, sizeof(struct udf_vat)); 2751 2752 vat->header_len = udf_rw16(152); /* as per spec */ 2753 vat->impl_use_len = udf_rw16(0); 2754 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2755 vat->prev_vat = udf_rw32(0xffffffff); 2756 vat->num_files = lvinfo->num_files; 2757 vat->num_directories = lvinfo->num_directories; 2758 vat->min_udf_readver = lvinfo->min_udf_readver; 2759 vat->min_udf_writever = lvinfo->min_udf_writever; 2760 vat->max_udf_writever = lvinfo->max_udf_writever; 2761 2762 error = udf_vat_write(vat_node, raw_vat, 2763 sizeof(struct udf_vat), 0); 2764 } 2765 free(raw_vat, M_TEMP); 2766 2767 return error; /* success! */ 2768 } 2769 2770 2771 int 2772 udf_writeout_vat(struct udf_mount *ump) 2773 { 2774 struct udf_node *vat_node = ump->vat_node; 2775 uint32_t vat_length; 2776 int error; 2777 2778 KASSERT(vat_node); 2779 2780 DPRINTF(CALL, ("udf_writeout_vat\n")); 2781 2782 mutex_enter(&ump->allocate_mutex); 2783 udf_update_vat_descriptor(ump); 2784 2785 /* write out the VAT contents ; TODO intelligent writing */ 2786 vat_length = ump->vat_table_len; 2787 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2788 ump->vat_table, ump->vat_table_len, 0, 2789 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2790 if (error) { 2791 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2792 goto out; 2793 } 2794 2795 mutex_exit(&ump->allocate_mutex); 2796 2797 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2798 error = VOP_FSYNC(ump->vat_node->vnode, 2799 FSCRED, FSYNC_WAIT, 0, 0); 2800 if (error) 2801 printf("udf_writeout_vat: error writing VAT node!\n"); 2802 out: 2803 2804 return error; 2805 } 2806 2807 /* --------------------------------------------------------------------- */ 2808 2809 /* 2810 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2811 * descriptor. If OK, read in complete VAT file. 2812 */ 2813 2814 static int 2815 udf_check_for_vat(struct udf_node *vat_node) 2816 { 2817 struct udf_mount *ump; 2818 struct icb_tag *icbtag; 2819 struct timestamp *mtime; 2820 struct udf_vat *vat; 2821 struct udf_oldvat_tail *oldvat_tl; 2822 struct udf_logvol_info *lvinfo; 2823 uint64_t unique_id; 2824 uint32_t vat_length; 2825 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2826 uint32_t sector_size; 2827 uint32_t *raw_vat; 2828 uint8_t *vat_table; 2829 char *regid_name; 2830 int filetype; 2831 int error; 2832 2833 /* vat_length is really 64 bits though impossible */ 2834 2835 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2836 if (!vat_node) 2837 return ENOENT; 2838 2839 /* get mount info */ 2840 ump = vat_node->ump; 2841 sector_size = udf_rw32(ump->logical_vol->lb_size); 2842 2843 /* check assertions */ 2844 assert(vat_node->fe || vat_node->efe); 2845 assert(ump->logvol_integrity); 2846 2847 /* set vnode type to regular file or we can't read from it! */ 2848 vat_node->vnode->v_type = VREG; 2849 2850 /* get information from fe/efe */ 2851 if (vat_node->fe) { 2852 vat_length = udf_rw64(vat_node->fe->inf_len); 2853 icbtag = &vat_node->fe->icbtag; 2854 mtime = &vat_node->fe->mtime; 2855 unique_id = udf_rw64(vat_node->fe->unique_id); 2856 } else { 2857 vat_length = udf_rw64(vat_node->efe->inf_len); 2858 icbtag = &vat_node->efe->icbtag; 2859 mtime = &vat_node->efe->mtime; 2860 unique_id = udf_rw64(vat_node->efe->unique_id); 2861 } 2862 2863 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2864 filetype = icbtag->file_type; 2865 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2866 return ENOENT; 2867 2868 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2869 2870 vat_table_alloc_len = 2871 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2872 * UDF_VAT_CHUNKSIZE; 2873 2874 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2875 M_CANFAIL | M_WAITOK); 2876 if (vat_table == NULL) { 2877 printf("allocation of %d bytes failed for VAT\n", 2878 vat_table_alloc_len); 2879 return ENOMEM; 2880 } 2881 2882 /* allocate piece to read in head or tail of VAT file */ 2883 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2884 2885 /* 2886 * check contents of the file if its the old 1.50 VAT table format. 2887 * Its notoriously broken and allthough some implementations support an 2888 * extention as defined in the UDF 1.50 errata document, its doubtfull 2889 * to be useable since a lot of implementations don't maintain it. 2890 */ 2891 lvinfo = ump->logvol_info; 2892 2893 if (filetype == 0) { 2894 /* definition */ 2895 vat_offset = 0; 2896 vat_entries = (vat_length-36)/4; 2897 2898 /* read in tail of virtual allocation table file */ 2899 error = vn_rdwr(UIO_READ, vat_node->vnode, 2900 (uint8_t *) raw_vat, 2901 sizeof(struct udf_oldvat_tail), 2902 vat_entries * 4, 2903 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2904 NULL, NULL); 2905 if (error) 2906 goto out; 2907 2908 /* check 1.50 VAT */ 2909 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2910 regid_name = (char *) oldvat_tl->id.id; 2911 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2912 if (error) { 2913 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2914 error = ENOENT; 2915 goto out; 2916 } 2917 2918 /* 2919 * update LVID from "*UDF VAT LVExtension" extended attribute 2920 * if present. 2921 */ 2922 udf_update_lvid_from_vat_extattr(vat_node); 2923 } else { 2924 /* read in head of virtual allocation table file */ 2925 error = vn_rdwr(UIO_READ, vat_node->vnode, 2926 (uint8_t *) raw_vat, 2927 sizeof(struct udf_vat), 0, 2928 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2929 NULL, NULL); 2930 if (error) 2931 goto out; 2932 2933 /* definition */ 2934 vat = (struct udf_vat *) raw_vat; 2935 vat_offset = vat->header_len; 2936 vat_entries = (vat_length - vat_offset)/4; 2937 2938 assert(lvinfo); 2939 lvinfo->num_files = vat->num_files; 2940 lvinfo->num_directories = vat->num_directories; 2941 lvinfo->min_udf_readver = vat->min_udf_readver; 2942 lvinfo->min_udf_writever = vat->min_udf_writever; 2943 lvinfo->max_udf_writever = vat->max_udf_writever; 2944 2945 udf_update_logvolname(ump, vat->logvol_id); 2946 } 2947 2948 /* read in complete VAT file */ 2949 error = vn_rdwr(UIO_READ, vat_node->vnode, 2950 vat_table, 2951 vat_length, 0, 2952 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2953 NULL, NULL); 2954 if (error) 2955 printf("read in of complete VAT file failed (error %d)\n", 2956 error); 2957 if (error) 2958 goto out; 2959 2960 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2961 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id); 2962 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2963 ump->logvol_integrity->time = *mtime; 2964 2965 ump->vat_table_len = vat_length; 2966 ump->vat_table_alloc_len = vat_table_alloc_len; 2967 ump->vat_table = vat_table; 2968 ump->vat_offset = vat_offset; 2969 ump->vat_entries = vat_entries; 2970 ump->vat_last_free_lb = 0; /* start at beginning */ 2971 2972 out: 2973 if (error) { 2974 if (vat_table) 2975 free(vat_table, M_UDFVOLD); 2976 } 2977 free(raw_vat, M_TEMP); 2978 2979 return error; 2980 } 2981 2982 /* --------------------------------------------------------------------- */ 2983 2984 static int 2985 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2986 { 2987 struct udf_node *vat_node; 2988 struct long_ad icb_loc; 2989 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2990 int error; 2991 2992 /* mapping info not needed */ 2993 mapping = mapping; 2994 2995 vat_loc = ump->last_possible_vat_location; 2996 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2997 2998 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2999 vat_loc, early_vat_loc)); 3000 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 3001 late_vat_loc = vat_loc + 1024; 3002 3003 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 3004 vat_loc, early_vat_loc)); 3005 3006 /* start looking from the end of the range */ 3007 do { 3008 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 3009 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 3010 icb_loc.loc.lb_num = udf_rw32(vat_loc); 3011 3012 error = udf_get_node(ump, &icb_loc, &vat_node); 3013 if (!error) { 3014 error = udf_check_for_vat(vat_node); 3015 DPRINTFIF(VOLUMES, !error, 3016 ("VAT accepted at %d\n", vat_loc)); 3017 if (!error) 3018 break; 3019 } 3020 if (vat_node) { 3021 vput(vat_node->vnode); 3022 vat_node = NULL; 3023 } 3024 vat_loc--; /* walk backwards */ 3025 } while (vat_loc >= early_vat_loc); 3026 3027 /* keep our VAT node around */ 3028 if (vat_node) { 3029 UDF_SET_SYSTEMFILE(vat_node->vnode); 3030 ump->vat_node = vat_node; 3031 } 3032 3033 return error; 3034 } 3035 3036 /* --------------------------------------------------------------------- */ 3037 3038 static int 3039 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 3040 { 3041 union dscrptr *dscr; 3042 struct part_map_spare *pms = &mapping->pms; 3043 uint32_t lb_num; 3044 int spar, error; 3045 3046 /* 3047 * The partition mapping passed on to us specifies the information we 3048 * need to locate and initialise the sparable partition mapping 3049 * information we need. 3050 */ 3051 3052 DPRINTF(VOLUMES, ("Read sparable table\n")); 3053 ump->sparable_packet_size = udf_rw16(pms->packet_len); 3054 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3055 3056 for (spar = 0; spar < pms->n_st; spar++) { 3057 lb_num = pms->st_loc[spar]; 3058 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3059 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3060 if (!error && dscr) { 3061 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3062 if (ump->sparing_table) 3063 free(ump->sparing_table, M_UDFVOLD); 3064 ump->sparing_table = &dscr->spt; 3065 dscr = NULL; 3066 DPRINTF(VOLUMES, 3067 ("Sparing table accepted (%d entries)\n", 3068 udf_rw16(ump->sparing_table->rt_l))); 3069 break; /* we're done */ 3070 } 3071 } 3072 if (dscr) 3073 free(dscr, M_UDFVOLD); 3074 } 3075 3076 if (ump->sparing_table) 3077 return 0; 3078 3079 return ENOENT; 3080 } 3081 3082 /* --------------------------------------------------------------------- */ 3083 3084 static int 3085 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3086 { 3087 struct part_map_meta *pmm = &mapping->pmm; 3088 struct long_ad icb_loc; 3089 struct vnode *vp; 3090 int error; 3091 3092 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3093 icb_loc.loc.part_num = pmm->part_num; 3094 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3095 DPRINTF(VOLUMES, ("Metadata file\n")); 3096 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3097 if (ump->metadata_node) { 3098 vp = ump->metadata_node->vnode; 3099 UDF_SET_SYSTEMFILE(vp); 3100 } 3101 3102 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3103 if (icb_loc.loc.lb_num != -1) { 3104 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3105 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3106 if (ump->metadatamirror_node) { 3107 vp = ump->metadatamirror_node->vnode; 3108 UDF_SET_SYSTEMFILE(vp); 3109 } 3110 } 3111 3112 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3113 if (icb_loc.loc.lb_num != -1) { 3114 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3115 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3116 if (ump->metadatabitmap_node) { 3117 vp = ump->metadatabitmap_node->vnode; 3118 UDF_SET_SYSTEMFILE(vp); 3119 } 3120 } 3121 3122 /* if we're mounting read-only we relax the requirements */ 3123 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3124 error = EFAULT; 3125 if (ump->metadata_node) 3126 error = 0; 3127 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3128 printf( "udf mount: Metadata file not readable, " 3129 "substituting Metadata copy file\n"); 3130 ump->metadata_node = ump->metadatamirror_node; 3131 ump->metadatamirror_node = NULL; 3132 error = 0; 3133 } 3134 } else { 3135 /* mounting read/write */ 3136 /* XXX DISABLED! metadata writing is not working yet XXX */ 3137 if (error) 3138 error = EROFS; 3139 } 3140 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3141 "metadata files\n")); 3142 return error; 3143 } 3144 3145 /* --------------------------------------------------------------------- */ 3146 3147 int 3148 udf_read_vds_tables(struct udf_mount *ump) 3149 { 3150 union udf_pmap *mapping; 3151 /* struct udf_args *args = &ump->mount_args; */ 3152 uint32_t n_pm, mt_l; 3153 uint32_t log_part; 3154 uint8_t *pmap_pos; 3155 int pmap_size; 3156 int error; 3157 3158 /* Iterate (again) over the part mappings for locations */ 3159 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3160 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 3161 pmap_pos = ump->logical_vol->maps; 3162 3163 for (log_part = 0; log_part < n_pm; log_part++) { 3164 mapping = (union udf_pmap *) pmap_pos; 3165 switch (ump->vtop_tp[log_part]) { 3166 case UDF_VTOP_TYPE_PHYS : 3167 /* nothing */ 3168 break; 3169 case UDF_VTOP_TYPE_VIRT : 3170 /* search and load VAT */ 3171 error = udf_search_vat(ump, mapping); 3172 if (error) 3173 return ENOENT; 3174 break; 3175 case UDF_VTOP_TYPE_SPARABLE : 3176 /* load one of the sparable tables */ 3177 error = udf_read_sparables(ump, mapping); 3178 if (error) 3179 return ENOENT; 3180 break; 3181 case UDF_VTOP_TYPE_META : 3182 /* load the associated file descriptors */ 3183 error = udf_read_metadata_nodes(ump, mapping); 3184 if (error) 3185 return ENOENT; 3186 break; 3187 default: 3188 break; 3189 } 3190 pmap_size = pmap_pos[1]; 3191 pmap_pos += pmap_size; 3192 } 3193 3194 /* read in and check unallocated and free space info if writing */ 3195 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3196 error = udf_read_physical_partition_spacetables(ump); 3197 if (error) 3198 return error; 3199 3200 /* also read in metadata partion spacebitmap if defined */ 3201 error = udf_read_metadata_partition_spacetable(ump); 3202 return error; 3203 } 3204 3205 return 0; 3206 } 3207 3208 /* --------------------------------------------------------------------- */ 3209 3210 int 3211 udf_read_rootdirs(struct udf_mount *ump) 3212 { 3213 union dscrptr *dscr; 3214 /* struct udf_args *args = &ump->mount_args; */ 3215 struct udf_node *rootdir_node, *streamdir_node; 3216 struct long_ad fsd_loc, *dir_loc; 3217 uint32_t lb_num, dummy; 3218 uint32_t fsd_len; 3219 int dscr_type; 3220 int error; 3221 3222 /* TODO implement FSD reading in separate function like integrity? */ 3223 /* get fileset descriptor sequence */ 3224 fsd_loc = ump->logical_vol->lv_fsd_loc; 3225 fsd_len = udf_rw32(fsd_loc.len); 3226 3227 dscr = NULL; 3228 error = 0; 3229 while (fsd_len || error) { 3230 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3231 /* translate fsd_loc to lb_num */ 3232 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3233 if (error) 3234 break; 3235 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3236 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3237 /* end markers */ 3238 if (error || (dscr == NULL)) 3239 break; 3240 3241 /* analyse */ 3242 dscr_type = udf_rw16(dscr->tag.id); 3243 if (dscr_type == TAGID_TERM) 3244 break; 3245 if (dscr_type != TAGID_FSD) { 3246 free(dscr, M_UDFVOLD); 3247 return ENOENT; 3248 } 3249 3250 /* 3251 * TODO check for multiple fileset descriptors; its only 3252 * picking the last now. Also check for FSD 3253 * correctness/interpretability 3254 */ 3255 3256 /* update */ 3257 if (ump->fileset_desc) { 3258 free(ump->fileset_desc, M_UDFVOLD); 3259 } 3260 ump->fileset_desc = &dscr->fsd; 3261 dscr = NULL; 3262 3263 /* continue to the next fsd */ 3264 fsd_len -= ump->discinfo.sector_size; 3265 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3266 3267 /* follow up to fsd->next_ex (long_ad) if its not null */ 3268 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3269 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3270 fsd_loc = ump->fileset_desc->next_ex; 3271 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3272 } 3273 } 3274 if (dscr) 3275 free(dscr, M_UDFVOLD); 3276 3277 /* there has to be one */ 3278 if (ump->fileset_desc == NULL) 3279 return ENOENT; 3280 3281 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3282 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3283 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3284 3285 /* 3286 * Now the FSD is known, read in the rootdirectory and if one exists, 3287 * the system stream dir. Some files in the system streamdir are not 3288 * wanted in this implementation since they are not maintained. If 3289 * writing is enabled we'll delete these files if they exist. 3290 */ 3291 3292 rootdir_node = streamdir_node = NULL; 3293 dir_loc = NULL; 3294 3295 /* try to read in the rootdir */ 3296 dir_loc = &ump->fileset_desc->rootdir_icb; 3297 error = udf_get_node(ump, dir_loc, &rootdir_node); 3298 if (error) 3299 return ENOENT; 3300 3301 /* aparently it read in fine */ 3302 3303 /* 3304 * Try the system stream directory; not very likely in the ones we 3305 * test, but for completeness. 3306 */ 3307 dir_loc = &ump->fileset_desc->streamdir_icb; 3308 if (udf_rw32(dir_loc->len)) { 3309 printf("udf_read_rootdirs: streamdir defined "); 3310 error = udf_get_node(ump, dir_loc, &streamdir_node); 3311 if (error) { 3312 printf("but error in streamdir reading\n"); 3313 } else { 3314 printf("but ignored\n"); 3315 /* 3316 * TODO process streamdir `baddies' i.e. files we dont 3317 * want if R/W 3318 */ 3319 } 3320 } 3321 3322 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3323 3324 /* release the vnodes again; they'll be auto-recycled later */ 3325 if (streamdir_node) { 3326 vput(streamdir_node->vnode); 3327 } 3328 if (rootdir_node) { 3329 vput(rootdir_node->vnode); 3330 } 3331 3332 return 0; 3333 } 3334 3335 /* --------------------------------------------------------------------- */ 3336 3337 /* To make absolutely sure we are NOT returning zero, add one :) */ 3338 3339 long 3340 udf_calchash(struct long_ad *icbptr) 3341 { 3342 /* ought to be enough since each mountpoint has its own chain */ 3343 return udf_rw32(icbptr->loc.lb_num) + 1; 3344 } 3345 3346 3347 static struct udf_node * 3348 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3349 { 3350 struct udf_node *node; 3351 struct vnode *vp; 3352 uint32_t hashline; 3353 3354 loop: 3355 mutex_enter(&ump->ihash_lock); 3356 3357 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3358 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3359 assert(node); 3360 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3361 node->loc.loc.part_num == icbptr->loc.part_num) { 3362 vp = node->vnode; 3363 assert(vp); 3364 mutex_enter(&vp->v_interlock); 3365 mutex_exit(&ump->ihash_lock); 3366 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3367 goto loop; 3368 return node; 3369 } 3370 } 3371 mutex_exit(&ump->ihash_lock); 3372 3373 return NULL; 3374 } 3375 3376 3377 static void 3378 udf_sorted_list_insert(struct udf_node *node) 3379 { 3380 struct udf_mount *ump; 3381 struct udf_node *s_node, *last_node; 3382 uint32_t loc, s_loc; 3383 3384 ump = node->ump; 3385 last_node = NULL; /* XXX gcc */ 3386 3387 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3388 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3389 return; 3390 } 3391 3392 /* 3393 * We sort on logical block number here and not on physical block 3394 * number here. Ideally we should go for the physical block nr to get 3395 * better sync performance though this sort will ensure that packets 3396 * won't get spit up unnessisarily. 3397 */ 3398 3399 loc = udf_rw32(node->loc.loc.lb_num); 3400 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3401 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3402 if (s_loc > loc) { 3403 LIST_INSERT_BEFORE(s_node, node, sortchain); 3404 return; 3405 } 3406 last_node = s_node; 3407 } 3408 LIST_INSERT_AFTER(last_node, node, sortchain); 3409 } 3410 3411 3412 static void 3413 udf_register_node(struct udf_node *node) 3414 { 3415 struct udf_mount *ump; 3416 struct udf_node *chk; 3417 uint32_t hashline; 3418 3419 ump = node->ump; 3420 mutex_enter(&ump->ihash_lock); 3421 3422 /* add to our hash table */ 3423 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3424 #ifdef DEBUG 3425 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3426 assert(chk); 3427 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3428 chk->loc.loc.part_num == node->loc.loc.part_num) 3429 panic("Double node entered\n"); 3430 } 3431 #else 3432 chk = NULL; 3433 #endif 3434 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3435 3436 /* add to our sorted list */ 3437 udf_sorted_list_insert(node); 3438 3439 mutex_exit(&ump->ihash_lock); 3440 } 3441 3442 3443 static void 3444 udf_deregister_node(struct udf_node *node) 3445 { 3446 struct udf_mount *ump; 3447 3448 ump = node->ump; 3449 mutex_enter(&ump->ihash_lock); 3450 3451 /* from hash and sorted list */ 3452 LIST_REMOVE(node, hashchain); 3453 LIST_REMOVE(node, sortchain); 3454 3455 mutex_exit(&ump->ihash_lock); 3456 } 3457 3458 /* --------------------------------------------------------------------- */ 3459 3460 static int 3461 udf_validate_session_start(struct udf_mount *ump) 3462 { 3463 struct mmc_trackinfo trackinfo; 3464 struct vrs_desc *vrs; 3465 uint32_t tracknr, sessionnr, sector, sector_size; 3466 uint32_t iso9660_vrs, write_track_start; 3467 uint8_t *buffer, *blank, *pos; 3468 int blks, max_sectors, vrs_len; 3469 int error; 3470 3471 /* disc appendable? */ 3472 if (ump->discinfo.disc_state == MMC_STATE_FULL) 3473 return EROFS; 3474 3475 /* already written here? if so, there should be an ISO VDS */ 3476 if (ump->discinfo.last_session_state == MMC_STATE_INCOMPLETE) 3477 return 0; 3478 3479 /* 3480 * Check if the first track of the session is blank and if so, copy or 3481 * create a dummy ISO descriptor so the disc is valid again. 3482 */ 3483 3484 tracknr = ump->discinfo.first_track_last_session; 3485 memset(&trackinfo, 0, sizeof(struct mmc_trackinfo)); 3486 trackinfo.tracknr = tracknr; 3487 error = udf_update_trackinfo(ump, &trackinfo); 3488 if (error) 3489 return error; 3490 3491 udf_dump_trackinfo(&trackinfo); 3492 KASSERT(trackinfo.flags & (MMC_TRACKINFO_BLANK | MMC_TRACKINFO_RESERVED)); 3493 KASSERT(trackinfo.sessionnr > 1); 3494 3495 KASSERT(trackinfo.flags & MMC_TRACKINFO_NWA_VALID); 3496 write_track_start = trackinfo.next_writable; 3497 3498 /* we have to copy the ISO VRS from a former session */ 3499 DPRINTF(VOLUMES, ("validate_session_start: " 3500 "blank or reserved track, copying VRS\n")); 3501 3502 /* sessionnr should be the session we're mounting */ 3503 sessionnr = ump->mount_args.sessionnr; 3504 3505 /* start at the first track */ 3506 tracknr = ump->discinfo.first_track; 3507 while (tracknr <= ump->discinfo.num_tracks) { 3508 trackinfo.tracknr = tracknr; 3509 error = udf_update_trackinfo(ump, &trackinfo); 3510 if (error) { 3511 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3512 return error; 3513 } 3514 if (trackinfo.sessionnr == sessionnr) 3515 break; 3516 tracknr++; 3517 } 3518 if (trackinfo.sessionnr != sessionnr) { 3519 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3520 return ENOENT; 3521 } 3522 3523 DPRINTF(VOLUMES, ("found possible former ISO VRS at\n")); 3524 udf_dump_trackinfo(&trackinfo); 3525 3526 /* 3527 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3528 * minimum ISO `sector size' 2048 3529 */ 3530 sector_size = ump->discinfo.sector_size; 3531 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3532 + trackinfo.track_start; 3533 3534 buffer = malloc(UDF_ISO_VRS_SIZE, M_TEMP, M_WAITOK); 3535 max_sectors = UDF_ISO_VRS_SIZE / sector_size; 3536 blks = MAX(1, 2048 / sector_size); 3537 3538 error = 0; 3539 for (sector = 0; sector < max_sectors; sector += blks) { 3540 pos = buffer + sector * sector_size; 3541 error = udf_read_phys_sectors(ump, UDF_C_DSCR, pos, 3542 iso9660_vrs + sector, blks); 3543 if (error) 3544 break; 3545 /* check this ISO descriptor */ 3546 vrs = (struct vrs_desc *) pos; 3547 DPRINTF(VOLUMES, ("got VRS id `%4s`\n", vrs->identifier)); 3548 if (strncmp(vrs->identifier, VRS_CD001, 5) == 0) 3549 continue; 3550 if (strncmp(vrs->identifier, VRS_CDW02, 5) == 0) 3551 continue; 3552 if (strncmp(vrs->identifier, VRS_BEA01, 5) == 0) 3553 continue; 3554 if (strncmp(vrs->identifier, VRS_NSR02, 5) == 0) 3555 continue; 3556 if (strncmp(vrs->identifier, VRS_NSR03, 5) == 0) 3557 continue; 3558 if (strncmp(vrs->identifier, VRS_TEA01, 5) == 0) 3559 break; 3560 /* now what? for now, end of sequence */ 3561 break; 3562 } 3563 vrs_len = sector + blks; 3564 if (error) { 3565 DPRINTF(VOLUMES, ("error reading old ISO VRS\n")); 3566 DPRINTF(VOLUMES, ("creating minimal ISO VRS\n")); 3567 3568 memset(buffer, 0, UDF_ISO_VRS_SIZE); 3569 3570 vrs = (struct vrs_desc *) (buffer); 3571 vrs->struct_type = 0; 3572 vrs->version = 1; 3573 memcpy(vrs->identifier,VRS_BEA01, 5); 3574 3575 vrs = (struct vrs_desc *) (buffer + 2048); 3576 vrs->struct_type = 0; 3577 vrs->version = 1; 3578 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) == 2) { 3579 memcpy(vrs->identifier,VRS_NSR02, 5); 3580 } else { 3581 memcpy(vrs->identifier,VRS_NSR03, 5); 3582 } 3583 3584 vrs = (struct vrs_desc *) (buffer + 4096); 3585 vrs->struct_type = 0; 3586 vrs->version = 1; 3587 memcpy(vrs->identifier, VRS_TEA01, 5); 3588 3589 vrs_len = 3*blks; 3590 } 3591 3592 DPRINTF(VOLUMES, ("Got VRS of %d sectors long\n", vrs_len)); 3593 3594 /* 3595 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3596 * minimum ISO `sector size' 2048 3597 */ 3598 sector_size = ump->discinfo.sector_size; 3599 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3600 + write_track_start; 3601 3602 /* write out 32 kb */ 3603 blank = malloc(sector_size, M_TEMP, M_WAITOK); 3604 memset(blank, 0, sector_size); 3605 error = 0; 3606 for (sector = write_track_start; sector < iso9660_vrs; sector ++) { 3607 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3608 blank, sector, 1); 3609 if (error) 3610 break; 3611 } 3612 if (!error) { 3613 /* write out our ISO VRS */ 3614 KASSERT(sector == iso9660_vrs); 3615 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, buffer, 3616 sector, vrs_len); 3617 sector += vrs_len; 3618 } 3619 if (!error) { 3620 /* fill upto the first anchor at S+256 */ 3621 for (; sector < write_track_start+256; sector++) { 3622 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3623 blank, sector, 1); 3624 if (error) 3625 break; 3626 } 3627 } 3628 if (!error) { 3629 /* write out anchor; write at ABSOLUTE place! */ 3630 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_ABSOLUTE, 3631 (union dscrptr *) ump->anchors[0], sector, sector); 3632 if (error) 3633 printf("writeout of anchor failed!\n"); 3634 } 3635 3636 free(blank, M_TEMP); 3637 free(buffer, M_TEMP); 3638 3639 if (error) 3640 printf("udf_open_session: error writing iso vrs! : " 3641 "leaving disc in compromised state!\n"); 3642 3643 /* synchronise device caches */ 3644 (void) udf_synchronise_caches(ump); 3645 3646 return error; 3647 } 3648 3649 3650 int 3651 udf_open_logvol(struct udf_mount *ump) 3652 { 3653 int logvol_integrity; 3654 int error; 3655 3656 /* already/still open? */ 3657 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3658 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3659 return 0; 3660 3661 /* can we open it ? */ 3662 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3663 return EROFS; 3664 3665 /* setup write parameters */ 3666 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3667 if ((error = udf_setup_writeparams(ump)) != 0) 3668 return error; 3669 3670 /* determine data and metadata tracks (most likely same) */ 3671 error = udf_search_writing_tracks(ump); 3672 if (error) { 3673 /* most likely lack of space */ 3674 printf("udf_open_logvol: error searching writing tracks\n"); 3675 return EROFS; 3676 } 3677 3678 /* writeout/update lvint on disc or only in memory */ 3679 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3680 if (ump->lvopen & UDF_OPEN_SESSION) { 3681 /* TODO optional track reservation opening */ 3682 error = udf_validate_session_start(ump); 3683 if (error) 3684 return error; 3685 3686 /* determine data and metadata tracks again */ 3687 error = udf_search_writing_tracks(ump); 3688 } 3689 3690 /* mark it open */ 3691 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3692 3693 /* do we need to write it out? */ 3694 if (ump->lvopen & UDF_WRITE_LVINT) { 3695 error = udf_writeout_lvint(ump, ump->lvopen); 3696 /* if we couldn't write it mark it closed again */ 3697 if (error) { 3698 ump->logvol_integrity->integrity_type = 3699 udf_rw32(UDF_INTEGRITY_CLOSED); 3700 return error; 3701 } 3702 } 3703 3704 return 0; 3705 } 3706 3707 3708 int 3709 udf_close_logvol(struct udf_mount *ump, int mntflags) 3710 { 3711 struct vnode *devvp = ump->devvp; 3712 struct mmc_op mmc_op; 3713 int logvol_integrity; 3714 int error = 0, error1 = 0, error2 = 0; 3715 int tracknr; 3716 int nvats, n, nok; 3717 3718 /* already/still closed? */ 3719 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3720 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3721 return 0; 3722 3723 /* writeout/update lvint or write out VAT */ 3724 DPRINTF(VOLUMES, ("udf_close_logvol: closing logical volume\n")); 3725 #ifdef DIAGNOSTIC 3726 if (ump->lvclose & UDF_CLOSE_SESSION) 3727 KASSERT(ump->lvclose & UDF_WRITE_VAT); 3728 #endif 3729 3730 if (ump->lvclose & UDF_WRITE_VAT) { 3731 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3732 3733 /* write out the VAT data and all its descriptors */ 3734 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3735 udf_writeout_vat(ump); 3736 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3737 3738 (void) VOP_FSYNC(ump->vat_node->vnode, 3739 FSCRED, FSYNC_WAIT, 0, 0); 3740 3741 if (ump->lvclose & UDF_CLOSE_SESSION) { 3742 DPRINTF(VOLUMES, ("udf_close_logvol: closing session " 3743 "as requested\n")); 3744 } 3745 3746 /* at least two DVD packets and 3 CD-R packets */ 3747 nvats = 32; 3748 3749 #if notyet 3750 /* 3751 * TODO calculate the available space and if the disc is 3752 * allmost full, write out till end-256-1 with banks, write 3753 * AVDP and fill up with VATs, then close session and close 3754 * disc. 3755 */ 3756 if (ump->lvclose & UDF_FINALISE_DISC) { 3757 error = udf_write_phys_dscr_sync(ump, NULL, 3758 UDF_C_FLOAT_DSCR, 3759 (union dscrptr *) ump->anchors[0], 3760 0, 0); 3761 if (error) 3762 printf("writeout of anchor failed!\n"); 3763 3764 /* pad space with VAT ICBs */ 3765 nvats = 256; 3766 } 3767 #endif 3768 3769 /* write out a number of VAT nodes */ 3770 nok = 0; 3771 for (n = 0; n < nvats; n++) { 3772 /* will now only write last FE/EFE */ 3773 ump->vat_node->i_flags |= IN_MODIFIED; 3774 error = VOP_FSYNC(ump->vat_node->vnode, 3775 FSCRED, FSYNC_WAIT, 0, 0); 3776 if (!error) 3777 nok++; 3778 } 3779 if (nok < 14) { 3780 /* arbitrary; but at least one or two CD frames */ 3781 printf("writeout of at least 14 VATs failed\n"); 3782 return error; 3783 } 3784 } 3785 3786 /* NOTE the disc is in a (minimal) valid state now; no erroring out */ 3787 3788 /* finish closing of session */ 3789 if (ump->lvclose & UDF_CLOSE_SESSION) { 3790 error = udf_validate_session_start(ump); 3791 if (error) 3792 return error; 3793 3794 /* close all associated tracks */ 3795 tracknr = ump->discinfo.first_track_last_session; 3796 error = 0; 3797 while (tracknr <= ump->discinfo.last_track_last_session) { 3798 DPRINTF(VOLUMES, ("\tclosing possible open " 3799 "track %d\n", tracknr)); 3800 memset(&mmc_op, 0, sizeof(mmc_op)); 3801 mmc_op.operation = MMC_OP_CLOSETRACK; 3802 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3803 mmc_op.tracknr = tracknr; 3804 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3805 FKIOCTL, NOCRED); 3806 if (error) 3807 printf("udf_close_logvol: closing of " 3808 "track %d failed\n", tracknr); 3809 tracknr ++; 3810 } 3811 if (!error) { 3812 DPRINTF(VOLUMES, ("closing session\n")); 3813 memset(&mmc_op, 0, sizeof(mmc_op)); 3814 mmc_op.operation = MMC_OP_CLOSESESSION; 3815 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3816 mmc_op.sessionnr = ump->discinfo.num_sessions; 3817 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3818 FKIOCTL, NOCRED); 3819 if (error) 3820 printf("udf_close_logvol: closing of session" 3821 "failed\n"); 3822 } 3823 if (!error) 3824 ump->lvopen |= UDF_OPEN_SESSION; 3825 if (error) { 3826 printf("udf_close_logvol: leaving disc as it is\n"); 3827 ump->lvclose &= ~UDF_FINALISE_DISC; 3828 } 3829 } 3830 3831 if (ump->lvclose & UDF_FINALISE_DISC) { 3832 memset(&mmc_op, 0, sizeof(mmc_op)); 3833 mmc_op.operation = MMC_OP_FINALISEDISC; 3834 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3835 mmc_op.sessionnr = ump->discinfo.num_sessions; 3836 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3837 FKIOCTL, NOCRED); 3838 if (error) 3839 printf("udf_close_logvol: finalising disc" 3840 "failed\n"); 3841 } 3842 3843 /* write out partition bitmaps if requested */ 3844 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3845 /* sync writeout metadata spacetable if existing */ 3846 error1 = udf_write_metadata_partition_spacetable(ump, true); 3847 if (error1) 3848 printf( "udf_close_logvol: writeout of metadata space " 3849 "bitmap failed\n"); 3850 3851 /* sync writeout partition spacetables */ 3852 error2 = udf_write_physical_partition_spacetables(ump, true); 3853 if (error2) 3854 printf( "udf_close_logvol: writeout of space tables " 3855 "failed\n"); 3856 3857 if (error1 || error2) 3858 return (error1 | error2); 3859 3860 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3861 } 3862 3863 /* mark it closed */ 3864 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3865 3866 /* do we need to write out the logical volume integrity? */ 3867 if (ump->lvclose & UDF_WRITE_LVINT) 3868 error = udf_writeout_lvint(ump, ump->lvopen); 3869 if (error) { 3870 /* HELP now what? mark it open again for now */ 3871 ump->logvol_integrity->integrity_type = 3872 udf_rw32(UDF_INTEGRITY_OPEN); 3873 return error; 3874 } 3875 3876 (void) udf_synchronise_caches(ump); 3877 3878 return 0; 3879 } 3880 3881 /* --------------------------------------------------------------------- */ 3882 3883 /* 3884 * Genfs interfacing 3885 * 3886 * static const struct genfs_ops udf_genfsops = { 3887 * .gop_size = genfs_size, 3888 * size of transfers 3889 * .gop_alloc = udf_gop_alloc, 3890 * allocate len bytes at offset 3891 * .gop_write = genfs_gop_write, 3892 * putpages interface code 3893 * .gop_markupdate = udf_gop_markupdate, 3894 * set update/modify flags etc. 3895 * } 3896 */ 3897 3898 /* 3899 * Genfs interface. These four functions are the only ones defined though not 3900 * documented... great.... 3901 */ 3902 3903 /* 3904 * Callback from genfs to allocate len bytes at offset off; only called when 3905 * filling up gaps in the allocation. 3906 */ 3907 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3908 static int 3909 udf_gop_alloc(struct vnode *vp, off_t off, 3910 off_t len, int flags, kauth_cred_t cred) 3911 { 3912 #if 0 3913 struct udf_node *udf_node = VTOI(vp); 3914 struct udf_mount *ump = udf_node->ump; 3915 uint32_t lb_size, num_lb; 3916 #endif 3917 3918 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3919 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3920 3921 return 0; 3922 } 3923 3924 3925 /* 3926 * callback from genfs to update our flags 3927 */ 3928 static void 3929 udf_gop_markupdate(struct vnode *vp, int flags) 3930 { 3931 struct udf_node *udf_node = VTOI(vp); 3932 u_long mask = 0; 3933 3934 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3935 mask = IN_ACCESS; 3936 } 3937 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3938 if (vp->v_type == VREG) { 3939 mask |= IN_CHANGE | IN_UPDATE; 3940 } else { 3941 mask |= IN_MODIFY; 3942 } 3943 } 3944 if (mask) { 3945 udf_node->i_flags |= mask; 3946 } 3947 } 3948 3949 3950 static const struct genfs_ops udf_genfsops = { 3951 .gop_size = genfs_size, 3952 .gop_alloc = udf_gop_alloc, 3953 .gop_write = genfs_gop_write_rwmap, 3954 .gop_markupdate = udf_gop_markupdate, 3955 }; 3956 3957 3958 /* --------------------------------------------------------------------- */ 3959 3960 int 3961 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3962 { 3963 union dscrptr *dscr; 3964 int error; 3965 3966 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3967 bzero(dscr, ump->discinfo.sector_size); 3968 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3969 3970 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3971 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3972 (void) udf_validate_tag_and_crc_sums(dscr); 3973 3974 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3975 dscr, sector, sector); 3976 3977 free(dscr, M_TEMP); 3978 3979 return error; 3980 } 3981 3982 3983 /* --------------------------------------------------------------------- */ 3984 3985 /* UDF<->unix converters */ 3986 3987 /* --------------------------------------------------------------------- */ 3988 3989 static mode_t 3990 udf_perm_to_unix_mode(uint32_t perm) 3991 { 3992 mode_t mode; 3993 3994 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3995 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3996 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3997 3998 return mode; 3999 } 4000 4001 /* --------------------------------------------------------------------- */ 4002 4003 static uint32_t 4004 unix_mode_to_udf_perm(mode_t mode) 4005 { 4006 uint32_t perm; 4007 4008 perm = ((mode & S_IRWXO) ); 4009 perm |= ((mode & S_IRWXG) << 2); 4010 perm |= ((mode & S_IRWXU) << 4); 4011 perm |= ((mode & S_IWOTH) << 3); 4012 perm |= ((mode & S_IWGRP) << 5); 4013 perm |= ((mode & S_IWUSR) << 7); 4014 4015 return perm; 4016 } 4017 4018 /* --------------------------------------------------------------------- */ 4019 4020 static uint32_t 4021 udf_icb_to_unix_filetype(uint32_t icbftype) 4022 { 4023 switch (icbftype) { 4024 case UDF_ICB_FILETYPE_DIRECTORY : 4025 case UDF_ICB_FILETYPE_STREAMDIR : 4026 return S_IFDIR; 4027 case UDF_ICB_FILETYPE_FIFO : 4028 return S_IFIFO; 4029 case UDF_ICB_FILETYPE_CHARDEVICE : 4030 return S_IFCHR; 4031 case UDF_ICB_FILETYPE_BLOCKDEVICE : 4032 return S_IFBLK; 4033 case UDF_ICB_FILETYPE_RANDOMACCESS : 4034 case UDF_ICB_FILETYPE_REALTIME : 4035 return S_IFREG; 4036 case UDF_ICB_FILETYPE_SYMLINK : 4037 return S_IFLNK; 4038 case UDF_ICB_FILETYPE_SOCKET : 4039 return S_IFSOCK; 4040 } 4041 /* no idea what this is */ 4042 return 0; 4043 } 4044 4045 /* --------------------------------------------------------------------- */ 4046 4047 void 4048 udf_to_unix_name(char *result, int result_len, char *id, int len, 4049 struct charspec *chsp) 4050 { 4051 uint16_t *raw_name, *unix_name; 4052 uint16_t *inchp, ch; 4053 uint8_t *outchp; 4054 const char *osta_id = "OSTA Compressed Unicode"; 4055 int ucode_chars, nice_uchars, is_osta_typ0, nout; 4056 4057 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 4058 unix_name = raw_name + 1024; /* split space in half */ 4059 assert(sizeof(char) == sizeof(uint8_t)); 4060 outchp = (uint8_t *) result; 4061 4062 is_osta_typ0 = (chsp->type == 0); 4063 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4064 if (is_osta_typ0) { 4065 /* TODO clean up */ 4066 *raw_name = *unix_name = 0; 4067 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 4068 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 4069 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 4070 /* output UTF8 */ 4071 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 4072 ch = *inchp; 4073 nout = wput_utf8(outchp, result_len, ch); 4074 outchp += nout; result_len -= nout; 4075 if (!ch) break; 4076 } 4077 *outchp++ = 0; 4078 } else { 4079 /* assume 8bit char length byte latin-1 */ 4080 assert(*id == 8); 4081 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 4082 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 4083 } 4084 free(raw_name, M_UDFTEMP); 4085 } 4086 4087 /* --------------------------------------------------------------------- */ 4088 4089 void 4090 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 4091 struct charspec *chsp) 4092 { 4093 uint16_t *raw_name; 4094 uint16_t *outchp; 4095 const char *inchp; 4096 const char *osta_id = "OSTA Compressed Unicode"; 4097 int udf_chars, is_osta_typ0, bits; 4098 size_t cnt; 4099 4100 /* allocate temporary unicode-16 buffer */ 4101 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 4102 4103 /* convert utf8 to unicode-16 */ 4104 *raw_name = 0; 4105 inchp = name; 4106 outchp = raw_name; 4107 bits = 8; 4108 for (cnt = name_len, udf_chars = 0; cnt;) { 4109 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 4110 *outchp = wget_utf8(&inchp, &cnt); 4111 if (*outchp > 0xff) 4112 bits=16; 4113 outchp++; 4114 udf_chars++; 4115 } 4116 /* null terminate just in case */ 4117 *outchp++ = 0; 4118 4119 is_osta_typ0 = (chsp->type == 0); 4120 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4121 if (is_osta_typ0) { 4122 udf_chars = udf_CompressUnicode(udf_chars, bits, 4123 (unicode_t *) raw_name, 4124 (byte *) result); 4125 } else { 4126 printf("unix to udf name: no CHSP0 ?\n"); 4127 /* XXX assume 8bit char length byte latin-1 */ 4128 *result++ = 8; udf_chars = 1; 4129 strncpy(result, name + 1, name_len); 4130 udf_chars += name_len; 4131 } 4132 *result_len = udf_chars; 4133 free(raw_name, M_UDFTEMP); 4134 } 4135 4136 /* --------------------------------------------------------------------- */ 4137 4138 void 4139 udf_timestamp_to_timespec(struct udf_mount *ump, 4140 struct timestamp *timestamp, 4141 struct timespec *timespec) 4142 { 4143 struct clock_ymdhms ymdhms; 4144 uint32_t usecs, secs, nsecs; 4145 uint16_t tz; 4146 4147 /* fill in ymdhms structure from timestamp */ 4148 memset(&ymdhms, 0, sizeof(ymdhms)); 4149 ymdhms.dt_year = udf_rw16(timestamp->year); 4150 ymdhms.dt_mon = timestamp->month; 4151 ymdhms.dt_day = timestamp->day; 4152 ymdhms.dt_wday = 0; /* ? */ 4153 ymdhms.dt_hour = timestamp->hour; 4154 ymdhms.dt_min = timestamp->minute; 4155 ymdhms.dt_sec = timestamp->second; 4156 4157 secs = clock_ymdhms_to_secs(&ymdhms); 4158 usecs = timestamp->usec + 4159 100*timestamp->hund_usec + 10000*timestamp->centisec; 4160 nsecs = usecs * 1000; 4161 4162 /* 4163 * Calculate the time zone. The timezone is 12 bit signed 2's 4164 * compliment, so we gotta do some extra magic to handle it right. 4165 */ 4166 tz = udf_rw16(timestamp->type_tz); 4167 tz &= 0x0fff; /* only lower 12 bits are significant */ 4168 if (tz & 0x0800) /* sign extention */ 4169 tz |= 0xf000; 4170 4171 /* TODO check timezone conversion */ 4172 /* check if we are specified a timezone to convert */ 4173 if (udf_rw16(timestamp->type_tz) & 0x1000) { 4174 if ((int16_t) tz != -2047) 4175 secs -= (int16_t) tz * 60; 4176 } else { 4177 secs -= ump->mount_args.gmtoff; 4178 } 4179 4180 timespec->tv_sec = secs; 4181 timespec->tv_nsec = nsecs; 4182 } 4183 4184 4185 void 4186 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 4187 { 4188 struct clock_ymdhms ymdhms; 4189 uint32_t husec, usec, csec; 4190 4191 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 4192 4193 usec = timespec->tv_nsec / 1000; 4194 husec = usec / 100; 4195 usec -= husec * 100; /* only 0-99 in usec */ 4196 csec = husec / 100; /* only 0-99 in csec */ 4197 husec -= csec * 100; /* only 0-99 in husec */ 4198 4199 /* set method 1 for CUT/GMT */ 4200 timestamp->type_tz = udf_rw16((1<<12) + 0); 4201 timestamp->year = udf_rw16(ymdhms.dt_year); 4202 timestamp->month = ymdhms.dt_mon; 4203 timestamp->day = ymdhms.dt_day; 4204 timestamp->hour = ymdhms.dt_hour; 4205 timestamp->minute = ymdhms.dt_min; 4206 timestamp->second = ymdhms.dt_sec; 4207 timestamp->centisec = csec; 4208 timestamp->hund_usec = husec; 4209 timestamp->usec = usec; 4210 } 4211 4212 /* --------------------------------------------------------------------- */ 4213 4214 /* 4215 * Attribute and filetypes converters with get/set pairs 4216 */ 4217 4218 uint32_t 4219 udf_getaccessmode(struct udf_node *udf_node) 4220 { 4221 struct file_entry *fe = udf_node->fe;; 4222 struct extfile_entry *efe = udf_node->efe; 4223 uint32_t udf_perm, icbftype; 4224 uint32_t mode, ftype; 4225 uint16_t icbflags; 4226 4227 UDF_LOCK_NODE(udf_node, 0); 4228 if (fe) { 4229 udf_perm = udf_rw32(fe->perm); 4230 icbftype = fe->icbtag.file_type; 4231 icbflags = udf_rw16(fe->icbtag.flags); 4232 } else { 4233 assert(udf_node->efe); 4234 udf_perm = udf_rw32(efe->perm); 4235 icbftype = efe->icbtag.file_type; 4236 icbflags = udf_rw16(efe->icbtag.flags); 4237 } 4238 4239 mode = udf_perm_to_unix_mode(udf_perm); 4240 ftype = udf_icb_to_unix_filetype(icbftype); 4241 4242 /* set suid, sgid, sticky from flags in fe/efe */ 4243 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 4244 mode |= S_ISUID; 4245 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 4246 mode |= S_ISGID; 4247 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 4248 mode |= S_ISVTX; 4249 4250 UDF_UNLOCK_NODE(udf_node, 0); 4251 4252 return mode | ftype; 4253 } 4254 4255 4256 void 4257 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 4258 { 4259 struct file_entry *fe = udf_node->fe; 4260 struct extfile_entry *efe = udf_node->efe; 4261 uint32_t udf_perm; 4262 uint16_t icbflags; 4263 4264 UDF_LOCK_NODE(udf_node, 0); 4265 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 4266 if (fe) { 4267 icbflags = udf_rw16(fe->icbtag.flags); 4268 } else { 4269 icbflags = udf_rw16(efe->icbtag.flags); 4270 } 4271 4272 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 4273 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 4274 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 4275 if (mode & S_ISUID) 4276 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 4277 if (mode & S_ISGID) 4278 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 4279 if (mode & S_ISVTX) 4280 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 4281 4282 if (fe) { 4283 fe->perm = udf_rw32(udf_perm); 4284 fe->icbtag.flags = udf_rw16(icbflags); 4285 } else { 4286 efe->perm = udf_rw32(udf_perm); 4287 efe->icbtag.flags = udf_rw16(icbflags); 4288 } 4289 4290 UDF_UNLOCK_NODE(udf_node, 0); 4291 } 4292 4293 4294 void 4295 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 4296 { 4297 struct udf_mount *ump = udf_node->ump; 4298 struct file_entry *fe = udf_node->fe; 4299 struct extfile_entry *efe = udf_node->efe; 4300 uid_t uid; 4301 gid_t gid; 4302 4303 UDF_LOCK_NODE(udf_node, 0); 4304 if (fe) { 4305 uid = (uid_t)udf_rw32(fe->uid); 4306 gid = (gid_t)udf_rw32(fe->gid); 4307 } else { 4308 assert(udf_node->efe); 4309 uid = (uid_t)udf_rw32(efe->uid); 4310 gid = (gid_t)udf_rw32(efe->gid); 4311 } 4312 4313 /* do the uid/gid translation game */ 4314 if (uid == (uid_t) -1) 4315 uid = ump->mount_args.anon_uid; 4316 if (gid == (gid_t) -1) 4317 gid = ump->mount_args.anon_gid; 4318 4319 *uidp = uid; 4320 *gidp = gid; 4321 4322 UDF_UNLOCK_NODE(udf_node, 0); 4323 } 4324 4325 4326 void 4327 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 4328 { 4329 struct udf_mount *ump = udf_node->ump; 4330 struct file_entry *fe = udf_node->fe; 4331 struct extfile_entry *efe = udf_node->efe; 4332 uid_t nobody_uid; 4333 gid_t nobody_gid; 4334 4335 UDF_LOCK_NODE(udf_node, 0); 4336 4337 /* do the uid/gid translation game */ 4338 nobody_uid = ump->mount_args.nobody_uid; 4339 nobody_gid = ump->mount_args.nobody_gid; 4340 if (uid == nobody_uid) 4341 uid = (uid_t) -1; 4342 if (gid == nobody_gid) 4343 gid = (gid_t) -1; 4344 4345 if (fe) { 4346 fe->uid = udf_rw32((uint32_t) uid); 4347 fe->gid = udf_rw32((uint32_t) gid); 4348 } else { 4349 efe->uid = udf_rw32((uint32_t) uid); 4350 efe->gid = udf_rw32((uint32_t) gid); 4351 } 4352 4353 UDF_UNLOCK_NODE(udf_node, 0); 4354 } 4355 4356 4357 /* --------------------------------------------------------------------- */ 4358 4359 4360 static int 4361 dirhash_fill(struct udf_node *dir_node) 4362 { 4363 struct vnode *dvp = dir_node->vnode; 4364 struct dirhash *dirh; 4365 struct file_entry *fe = dir_node->fe; 4366 struct extfile_entry *efe = dir_node->efe; 4367 struct fileid_desc *fid; 4368 struct dirent *dirent; 4369 uint64_t file_size, pre_diroffset, diroffset; 4370 uint32_t lb_size; 4371 int error; 4372 4373 /* make sure we have a dirhash to work on */ 4374 dirh = dir_node->dir_hash; 4375 KASSERT(dirh); 4376 KASSERT(dirh->refcnt > 0); 4377 4378 if (dirh->flags & DIRH_BROKEN) 4379 return EIO; 4380 if (dirh->flags & DIRH_COMPLETE) 4381 return 0; 4382 4383 /* make sure we have a clean dirhash to add to */ 4384 dirhash_purge_entries(dirh); 4385 4386 /* get directory filesize */ 4387 if (fe) { 4388 file_size = udf_rw64(fe->inf_len); 4389 } else { 4390 assert(efe); 4391 file_size = udf_rw64(efe->inf_len); 4392 } 4393 4394 /* allocate temporary space for fid */ 4395 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4396 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4397 4398 /* allocate temporary space for dirent */ 4399 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4400 4401 error = 0; 4402 diroffset = 0; 4403 while (diroffset < file_size) { 4404 /* transfer a new fid/dirent */ 4405 pre_diroffset = diroffset; 4406 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4407 if (error) { 4408 /* TODO what to do? continue but not add? */ 4409 dirh->flags |= DIRH_BROKEN; 4410 dirhash_purge_entries(dirh); 4411 break; 4412 } 4413 4414 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4415 /* register deleted extent for reuse */ 4416 dirhash_enter_freed(dirh, pre_diroffset, 4417 udf_fidsize(fid)); 4418 } else { 4419 /* append to the dirhash */ 4420 dirhash_enter(dirh, dirent, pre_diroffset, 4421 udf_fidsize(fid), 0); 4422 } 4423 } 4424 dirh->flags |= DIRH_COMPLETE; 4425 4426 free(fid, M_UDFTEMP); 4427 free(dirent, M_UDFTEMP); 4428 4429 return error; 4430 } 4431 4432 4433 /* --------------------------------------------------------------------- */ 4434 4435 /* 4436 * Directory read and manipulation functions. 4437 * 4438 */ 4439 4440 int 4441 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4442 struct long_ad *icb_loc, int *found) 4443 { 4444 struct udf_node *dir_node = VTOI(vp); 4445 struct dirhash *dirh; 4446 struct dirhash_entry *dirh_ep; 4447 struct fileid_desc *fid; 4448 struct dirent *dirent; 4449 uint64_t diroffset; 4450 uint32_t lb_size; 4451 int hit, error; 4452 4453 /* set default return */ 4454 *found = 0; 4455 4456 /* get our dirhash and make sure its read in */ 4457 dirhash_get(&dir_node->dir_hash); 4458 error = dirhash_fill(dir_node); 4459 if (error) { 4460 dirhash_put(dir_node->dir_hash); 4461 return error; 4462 } 4463 dirh = dir_node->dir_hash; 4464 4465 /* allocate temporary space for fid */ 4466 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4467 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4468 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4469 4470 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4471 namelen, namelen, name)); 4472 4473 /* search our dirhash hits */ 4474 memset(icb_loc, 0, sizeof(*icb_loc)); 4475 dirh_ep = NULL; 4476 for (;;) { 4477 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4478 /* if no hit, abort the search */ 4479 if (!hit) 4480 break; 4481 4482 /* check this hit */ 4483 diroffset = dirh_ep->offset; 4484 4485 /* transfer a new fid/dirent */ 4486 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4487 if (error) 4488 break; 4489 4490 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4491 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4492 4493 /* see if its our entry */ 4494 KASSERT(dirent->d_namlen == namelen); 4495 if (strncmp(dirent->d_name, name, namelen) == 0) { 4496 *found = 1; 4497 *icb_loc = fid->icb; 4498 break; 4499 } 4500 } 4501 free(fid, M_UDFTEMP); 4502 free(dirent, M_UDFTEMP); 4503 4504 dirhash_put(dir_node->dir_hash); 4505 4506 return error; 4507 } 4508 4509 /* --------------------------------------------------------------------- */ 4510 4511 static int 4512 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4513 struct long_ad *node_icb, struct long_ad *parent_icb, 4514 uint64_t parent_unique_id) 4515 { 4516 struct timespec now; 4517 struct icb_tag *icb; 4518 struct filetimes_extattr_entry *ft_extattr; 4519 uint64_t unique_id; 4520 uint32_t fidsize, lb_num; 4521 uint8_t *bpos; 4522 int crclen, attrlen; 4523 4524 lb_num = udf_rw32(node_icb->loc.lb_num); 4525 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4526 icb = &fe->icbtag; 4527 4528 /* 4529 * Always use strategy type 4 unless on WORM wich we don't support 4530 * (yet). Fill in defaults and set for internal allocation of data. 4531 */ 4532 icb->strat_type = udf_rw16(4); 4533 icb->max_num_entries = udf_rw16(1); 4534 icb->file_type = file_type; /* 8 bit */ 4535 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4536 4537 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4538 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4539 4540 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4541 4542 vfs_timestamp(&now); 4543 udf_timespec_to_timestamp(&now, &fe->atime); 4544 udf_timespec_to_timestamp(&now, &fe->attrtime); 4545 udf_timespec_to_timestamp(&now, &fe->mtime); 4546 4547 udf_set_regid(&fe->imp_id, IMPL_NAME); 4548 udf_add_impl_regid(ump, &fe->imp_id); 4549 4550 unique_id = udf_advance_uniqueid(ump); 4551 fe->unique_id = udf_rw64(unique_id); 4552 fe->l_ea = udf_rw32(0); 4553 4554 /* create extended attribute to record our creation time */ 4555 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4556 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4557 memset(ft_extattr, 0, attrlen); 4558 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4559 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4560 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4561 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4562 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4563 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4564 4565 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4566 (struct extattr_entry *) ft_extattr); 4567 free(ft_extattr, M_UDFTEMP); 4568 4569 /* if its a directory, create '..' */ 4570 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4571 fidsize = 0; 4572 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4573 fidsize = udf_create_parentfid(ump, 4574 (struct fileid_desc *) bpos, parent_icb, 4575 parent_unique_id); 4576 } 4577 4578 /* record fidlength information */ 4579 fe->inf_len = udf_rw64(fidsize); 4580 fe->l_ad = udf_rw32(fidsize); 4581 fe->logblks_rec = udf_rw64(0); /* intern */ 4582 4583 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4584 crclen += udf_rw32(fe->l_ea) + fidsize; 4585 fe->tag.desc_crc_len = udf_rw16(crclen); 4586 4587 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4588 4589 return fidsize; 4590 } 4591 4592 /* --------------------------------------------------------------------- */ 4593 4594 static int 4595 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4596 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4597 uint64_t parent_unique_id) 4598 { 4599 struct timespec now; 4600 struct icb_tag *icb; 4601 uint64_t unique_id; 4602 uint32_t fidsize, lb_num; 4603 uint8_t *bpos; 4604 int crclen; 4605 4606 lb_num = udf_rw32(node_icb->loc.lb_num); 4607 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4608 icb = &efe->icbtag; 4609 4610 /* 4611 * Always use strategy type 4 unless on WORM wich we don't support 4612 * (yet). Fill in defaults and set for internal allocation of data. 4613 */ 4614 icb->strat_type = udf_rw16(4); 4615 icb->max_num_entries = udf_rw16(1); 4616 icb->file_type = file_type; /* 8 bit */ 4617 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4618 4619 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4620 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4621 4622 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4623 4624 vfs_timestamp(&now); 4625 udf_timespec_to_timestamp(&now, &efe->ctime); 4626 udf_timespec_to_timestamp(&now, &efe->atime); 4627 udf_timespec_to_timestamp(&now, &efe->attrtime); 4628 udf_timespec_to_timestamp(&now, &efe->mtime); 4629 4630 udf_set_regid(&efe->imp_id, IMPL_NAME); 4631 udf_add_impl_regid(ump, &efe->imp_id); 4632 4633 unique_id = udf_advance_uniqueid(ump); 4634 efe->unique_id = udf_rw64(unique_id); 4635 efe->l_ea = udf_rw32(0); 4636 4637 /* if its a directory, create '..' */ 4638 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4639 fidsize = 0; 4640 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4641 fidsize = udf_create_parentfid(ump, 4642 (struct fileid_desc *) bpos, parent_icb, 4643 parent_unique_id); 4644 } 4645 4646 /* record fidlength information */ 4647 efe->obj_size = udf_rw64(fidsize); 4648 efe->inf_len = udf_rw64(fidsize); 4649 efe->l_ad = udf_rw32(fidsize); 4650 efe->logblks_rec = udf_rw64(0); /* intern */ 4651 4652 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4653 crclen += udf_rw32(efe->l_ea) + fidsize; 4654 efe->tag.desc_crc_len = udf_rw16(crclen); 4655 4656 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4657 4658 return fidsize; 4659 } 4660 4661 /* --------------------------------------------------------------------- */ 4662 4663 int 4664 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4665 struct udf_node *udf_node, struct componentname *cnp) 4666 { 4667 struct vnode *dvp = dir_node->vnode; 4668 struct dirhash *dirh; 4669 struct dirhash_entry *dirh_ep; 4670 struct file_entry *fe = dir_node->fe; 4671 struct extfile_entry *efe = dir_node->efe; 4672 struct fileid_desc *fid; 4673 struct dirent *dirent; 4674 uint64_t file_size, diroffset; 4675 uint32_t lb_size, fidsize; 4676 int found, error; 4677 char const *name = cnp->cn_nameptr; 4678 int namelen = cnp->cn_namelen; 4679 int hit, refcnt; 4680 4681 /* get our dirhash and make sure its read in */ 4682 dirhash_get(&dir_node->dir_hash); 4683 error = dirhash_fill(dir_node); 4684 if (error) { 4685 dirhash_put(dir_node->dir_hash); 4686 return error; 4687 } 4688 dirh = dir_node->dir_hash; 4689 4690 /* get directory filesize */ 4691 if (fe) { 4692 file_size = udf_rw64(fe->inf_len); 4693 } else { 4694 assert(efe); 4695 file_size = udf_rw64(efe->inf_len); 4696 } 4697 4698 /* allocate temporary space for fid */ 4699 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4700 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4701 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4702 4703 /* search our dirhash hits */ 4704 found = 0; 4705 dirh_ep = NULL; 4706 for (;;) { 4707 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4708 /* if no hit, abort the search */ 4709 if (!hit) 4710 break; 4711 4712 /* check this hit */ 4713 diroffset = dirh_ep->offset; 4714 4715 /* transfer a new fid/dirent */ 4716 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4717 if (error) 4718 break; 4719 4720 /* see if its our entry */ 4721 KASSERT(dirent->d_namlen == namelen); 4722 if (strncmp(dirent->d_name, name, namelen) == 0) { 4723 found = 1; 4724 break; 4725 } 4726 } 4727 4728 if (!found) 4729 error = ENOENT; 4730 if (error) 4731 goto error_out; 4732 4733 /* mark deleted */ 4734 fid->file_char |= UDF_FILE_CHAR_DEL; 4735 #ifdef UDF_COMPLETE_DELETE 4736 memset(&fid->icb, 0, sizeof(fid->icb)); 4737 #endif 4738 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4739 4740 /* get size of fid and compensate for the read_fid_stream advance */ 4741 fidsize = udf_fidsize(fid); 4742 diroffset -= fidsize; 4743 4744 /* write out */ 4745 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4746 fid, fidsize, diroffset, 4747 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4748 FSCRED, NULL, NULL); 4749 if (error) 4750 goto error_out; 4751 4752 /* get reference count of attached node */ 4753 if (udf_node->fe) { 4754 refcnt = udf_rw16(udf_node->fe->link_cnt); 4755 } else { 4756 KASSERT(udf_node->efe); 4757 refcnt = udf_rw16(udf_node->efe->link_cnt); 4758 } 4759 #ifdef UDF_COMPLETE_DELETE 4760 /* substract reference counter in attached node */ 4761 refcnt -= 1; 4762 if (udf_node->fe) { 4763 udf_node->fe->link_cnt = udf_rw16(refcnt); 4764 } else { 4765 udf_node->efe->link_cnt = udf_rw16(refcnt); 4766 } 4767 4768 /* prevent writeout when refcnt == 0 */ 4769 if (refcnt == 0) 4770 udf_node->i_flags |= IN_DELETED; 4771 4772 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4773 int drefcnt; 4774 4775 /* substract reference counter in directory node */ 4776 /* note subtract 2 (?) for its was also backreferenced */ 4777 if (dir_node->fe) { 4778 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4779 drefcnt -= 1; 4780 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4781 } else { 4782 KASSERT(dir_node->efe); 4783 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4784 drefcnt -= 1; 4785 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4786 } 4787 } 4788 4789 udf_node->i_flags |= IN_MODIFIED; 4790 dir_node->i_flags |= IN_MODIFIED; 4791 #endif 4792 /* if it is/was a hardlink adjust the file count */ 4793 if (refcnt > 0) 4794 udf_adjust_filecount(udf_node, -1); 4795 4796 /* remove from the dirhash */ 4797 dirhash_remove(dirh, dirent, diroffset, 4798 udf_fidsize(fid)); 4799 4800 error_out: 4801 free(fid, M_UDFTEMP); 4802 free(dirent, M_UDFTEMP); 4803 4804 dirhash_put(dir_node->dir_hash); 4805 4806 return error; 4807 } 4808 4809 /* --------------------------------------------------------------------- */ 4810 4811 /* 4812 * We are not allowed to split the fid tag itself over an logical block so 4813 * check the space remaining in the logical block. 4814 * 4815 * We try to select the smallest candidate for recycling or when none is 4816 * found, append a new one at the end of the directory. 4817 */ 4818 4819 int 4820 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4821 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4822 { 4823 struct vnode *dvp = dir_node->vnode; 4824 struct dirhash *dirh; 4825 struct dirhash_entry *dirh_ep; 4826 struct fileid_desc *fid; 4827 struct icb_tag *icbtag; 4828 struct charspec osta_charspec; 4829 struct dirent dirent; 4830 uint64_t unique_id, dir_size; 4831 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4832 uint32_t chosen_size, chosen_size_diff; 4833 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4834 int file_char, refcnt, icbflags, addr_type, hit, error; 4835 4836 /* get our dirhash and make sure its read in */ 4837 dirhash_get(&dir_node->dir_hash); 4838 error = dirhash_fill(dir_node); 4839 if (error) { 4840 dirhash_put(dir_node->dir_hash); 4841 return error; 4842 } 4843 dirh = dir_node->dir_hash; 4844 4845 /* get info */ 4846 lb_size = udf_rw32(ump->logical_vol->lb_size); 4847 udf_osta_charset(&osta_charspec); 4848 4849 if (dir_node->fe) { 4850 dir_size = udf_rw64(dir_node->fe->inf_len); 4851 icbtag = &dir_node->fe->icbtag; 4852 } else { 4853 dir_size = udf_rw64(dir_node->efe->inf_len); 4854 icbtag = &dir_node->efe->icbtag; 4855 } 4856 4857 icbflags = udf_rw16(icbtag->flags); 4858 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4859 4860 if (udf_node->fe) { 4861 unique_id = udf_rw64(udf_node->fe->unique_id); 4862 refcnt = udf_rw16(udf_node->fe->link_cnt); 4863 } else { 4864 unique_id = udf_rw64(udf_node->efe->unique_id); 4865 refcnt = udf_rw16(udf_node->efe->link_cnt); 4866 } 4867 4868 if (refcnt > 0) { 4869 unique_id = udf_advance_uniqueid(ump); 4870 udf_adjust_filecount(udf_node, 1); 4871 } 4872 4873 /* determine file characteristics */ 4874 file_char = 0; /* visible non deleted file and not stream metadata */ 4875 if (vap->va_type == VDIR) 4876 file_char = UDF_FILE_CHAR_DIR; 4877 4878 /* malloc scrap buffer */ 4879 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4880 bzero(fid, lb_size); 4881 4882 /* calculate _minimum_ fid size */ 4883 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4884 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4885 fidsize = UDF_FID_SIZE + fid->l_fi; 4886 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4887 4888 /* find position that will fit the FID */ 4889 chosen_fid_pos = dir_size; 4890 chosen_size = 0; 4891 chosen_size_diff = UINT_MAX; 4892 4893 /* shut up gcc */ 4894 dirent.d_namlen = 0; 4895 4896 /* search our dirhash hits */ 4897 error = 0; 4898 dirh_ep = NULL; 4899 for (;;) { 4900 hit = dirhash_lookup_freed(dirh, fidsize, &dirh_ep); 4901 /* if no hit, abort the search */ 4902 if (!hit) 4903 break; 4904 4905 /* check this hit for size */ 4906 this_fidsize = dirh_ep->entry_size; 4907 4908 /* check this hit */ 4909 fid_pos = dirh_ep->offset; 4910 end_fid_pos = fid_pos + this_fidsize; 4911 size_diff = this_fidsize - fidsize; 4912 lb_rest = lb_size - (end_fid_pos % lb_size); 4913 4914 #ifndef UDF_COMPLETE_DELETE 4915 /* transfer a new fid/dirent */ 4916 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4917 if (error) 4918 goto error_out; 4919 4920 /* only reuse entries that are wiped */ 4921 /* check if the len + loc are marked zero */ 4922 if (udf_rw32(fid->icb.len) != 0) 4923 continue; 4924 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4925 continue; 4926 if (udf_rw16(fid->icb.loc.part_num) != 0) 4927 continue; 4928 #endif /* UDF_COMPLETE_DELETE */ 4929 4930 /* select if not splitting the tag and its smaller */ 4931 if ((size_diff >= 0) && 4932 (size_diff < chosen_size_diff) && 4933 (lb_rest >= sizeof(struct desc_tag))) 4934 { 4935 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4936 if ((size_diff == 0) || (size_diff >= 32)) { 4937 chosen_fid_pos = fid_pos; 4938 chosen_size = this_fidsize; 4939 chosen_size_diff = size_diff; 4940 } 4941 } 4942 } 4943 4944 4945 /* extend directory if no other candidate found */ 4946 if (chosen_size == 0) { 4947 chosen_fid_pos = dir_size; 4948 chosen_size = fidsize; 4949 chosen_size_diff = 0; 4950 4951 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4952 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4953 /* pre-grow directory to see if we're to switch */ 4954 udf_grow_node(dir_node, dir_size + chosen_size); 4955 4956 icbflags = udf_rw16(icbtag->flags); 4957 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4958 } 4959 4960 /* make sure the next fid desc_tag won't be splitted */ 4961 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4962 end_fid_pos = chosen_fid_pos + chosen_size; 4963 lb_rest = lb_size - (end_fid_pos % lb_size); 4964 4965 /* pad with implementation use regid if needed */ 4966 if (lb_rest < sizeof(struct desc_tag)) 4967 chosen_size += 32; 4968 } 4969 } 4970 chosen_size_diff = chosen_size - fidsize; 4971 4972 /* populate the FID */ 4973 memset(fid, 0, lb_size); 4974 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4975 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4976 fid->file_char = file_char; 4977 fid->icb = udf_node->loc; 4978 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4979 fid->l_iu = udf_rw16(0); 4980 4981 if (chosen_size > fidsize) { 4982 /* insert implementation-use regid to space it correctly */ 4983 fid->l_iu = udf_rw16(chosen_size_diff); 4984 4985 /* set implementation use */ 4986 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4987 udf_add_impl_regid(ump, (struct regid *) fid->data); 4988 } 4989 4990 /* fill in name */ 4991 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4992 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4993 4994 fid->tag.desc_crc_len = udf_rw16(chosen_size - UDF_DESC_TAG_LENGTH); 4995 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4996 4997 /* writeout FID/update parent directory */ 4998 error = vn_rdwr(UIO_WRITE, dvp, 4999 fid, chosen_size, chosen_fid_pos, 5000 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 5001 FSCRED, NULL, NULL); 5002 5003 if (error) 5004 goto error_out; 5005 5006 /* add reference counter in attached node */ 5007 if (udf_node->fe) { 5008 refcnt = udf_rw16(udf_node->fe->link_cnt); 5009 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 5010 } else { 5011 KASSERT(udf_node->efe); 5012 refcnt = udf_rw16(udf_node->efe->link_cnt); 5013 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 5014 } 5015 5016 /* mark not deleted if it was... just in case, but do warn */ 5017 if (udf_node->i_flags & IN_DELETED) { 5018 printf("udf: warning, marking a file undeleted\n"); 5019 udf_node->i_flags &= ~IN_DELETED; 5020 } 5021 5022 if (file_char & UDF_FILE_CHAR_DIR) { 5023 /* add reference counter in directory node for '..' */ 5024 if (dir_node->fe) { 5025 refcnt = udf_rw16(dir_node->fe->link_cnt); 5026 refcnt++; 5027 dir_node->fe->link_cnt = udf_rw16(refcnt); 5028 } else { 5029 KASSERT(dir_node->efe); 5030 refcnt = udf_rw16(dir_node->efe->link_cnt); 5031 refcnt++; 5032 dir_node->efe->link_cnt = udf_rw16(refcnt); 5033 } 5034 } 5035 5036 /* append to the dirhash */ 5037 dirent.d_namlen = cnp->cn_namelen; 5038 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 5039 dirhash_enter(dirh, &dirent, chosen_fid_pos, 5040 udf_fidsize(fid), 1); 5041 5042 /* note updates */ 5043 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 5044 /* VN_KNOTE(udf_node, ...) */ 5045 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 5046 5047 error_out: 5048 free(fid, M_TEMP); 5049 5050 dirhash_put(dir_node->dir_hash); 5051 5052 return error; 5053 } 5054 5055 /* --------------------------------------------------------------------- */ 5056 5057 /* 5058 * Each node can have an attached streamdir node though not recursively. These 5059 * are otherwise known as named substreams/named extended attributes that have 5060 * no size limitations. 5061 * 5062 * `Normal' extended attributes are indicated with a number and are recorded 5063 * in either the fe/efe descriptor itself for small descriptors or recorded in 5064 * the attached extended attribute file. Since these spaces can get 5065 * fragmented, care ought to be taken. 5066 * 5067 * Since the size of the space reserved for allocation descriptors is limited, 5068 * there is a mechanim provided for extending this space; this is done by a 5069 * special extent to allow schrinking of the allocations without breaking the 5070 * linkage to the allocation extent descriptor. 5071 */ 5072 5073 int 5074 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 5075 struct udf_node **udf_noderes) 5076 { 5077 union dscrptr *dscr; 5078 struct udf_node *udf_node; 5079 struct vnode *nvp; 5080 struct long_ad icb_loc, last_fe_icb_loc; 5081 uint64_t file_size; 5082 uint32_t lb_size, sector, dummy; 5083 uint8_t *file_data; 5084 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 5085 int slot, eof, error; 5086 5087 DPRINTF(NODE, ("udf_get_node called\n")); 5088 *udf_noderes = udf_node = NULL; 5089 5090 /* lock to disallow simultanious creation of same udf_node */ 5091 mutex_enter(&ump->get_node_lock); 5092 5093 DPRINTF(NODE, ("\tlookup in hash table\n")); 5094 /* lookup in hash table */ 5095 assert(ump); 5096 assert(node_icb_loc); 5097 udf_node = udf_hash_lookup(ump, node_icb_loc); 5098 if (udf_node) { 5099 DPRINTF(NODE, ("\tgot it from the hash!\n")); 5100 /* vnode is returned locked */ 5101 *udf_noderes = udf_node; 5102 mutex_exit(&ump->get_node_lock); 5103 return 0; 5104 } 5105 5106 /* garbage check: translate udf_node_icb_loc to sectornr */ 5107 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 5108 if (error) { 5109 /* no use, this will fail anyway */ 5110 mutex_exit(&ump->get_node_lock); 5111 return EINVAL; 5112 } 5113 5114 /* build udf_node (do initialise!) */ 5115 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5116 memset(udf_node, 0, sizeof(struct udf_node)); 5117 5118 DPRINTF(NODE, ("\tget new vnode\n")); 5119 /* give it a vnode */ 5120 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 5121 if (error) { 5122 pool_put(&udf_node_pool, udf_node); 5123 mutex_exit(&ump->get_node_lock); 5124 return error; 5125 } 5126 5127 /* always return locked vnode */ 5128 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 5129 /* recycle vnode and unlock; simultanious will fail too */ 5130 ungetnewvnode(nvp); 5131 mutex_exit(&ump->get_node_lock); 5132 return error; 5133 } 5134 5135 /* initialise crosslinks, note location of fe/efe for hashing */ 5136 udf_node->ump = ump; 5137 udf_node->vnode = nvp; 5138 nvp->v_data = udf_node; 5139 udf_node->loc = *node_icb_loc; 5140 udf_node->lockf = 0; 5141 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5142 cv_init(&udf_node->node_lock, "udf_nlk"); 5143 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 5144 udf_node->outstanding_bufs = 0; 5145 udf_node->outstanding_nodedscr = 0; 5146 5147 /* check if we're fetching the root */ 5148 if (ump->fileset_desc) 5149 if (memcmp(&udf_node->loc, &ump->fileset_desc->rootdir_icb, 5150 sizeof(struct long_ad)) == 0) 5151 nvp->v_vflag |= VV_ROOT; 5152 5153 /* insert into the hash lookup */ 5154 udf_register_node(udf_node); 5155 5156 /* safe to unlock, the entry is in the hash table, vnode is locked */ 5157 mutex_exit(&ump->get_node_lock); 5158 5159 icb_loc = *node_icb_loc; 5160 needs_indirect = 0; 5161 strat4096 = 0; 5162 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 5163 file_size = 0; 5164 file_data = NULL; 5165 lb_size = udf_rw32(ump->logical_vol->lb_size); 5166 5167 DPRINTF(NODE, ("\tstart reading descriptors\n")); 5168 do { 5169 /* try to read in fe/efe */ 5170 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5171 5172 /* blank sector marks end of sequence, check this */ 5173 if ((dscr == NULL) && (!strat4096)) 5174 error = ENOENT; 5175 5176 /* break if read error or blank sector */ 5177 if (error || (dscr == NULL)) 5178 break; 5179 5180 /* process descriptor based on the descriptor type */ 5181 dscr_type = udf_rw16(dscr->tag.id); 5182 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 5183 5184 /* if dealing with an indirect entry, follow the link */ 5185 if (dscr_type == TAGID_INDIRECTENTRY) { 5186 needs_indirect = 0; 5187 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5188 icb_loc = dscr->inde.indirect_icb; 5189 continue; 5190 } 5191 5192 /* only file entries and extended file entries allowed here */ 5193 if ((dscr_type != TAGID_FENTRY) && 5194 (dscr_type != TAGID_EXTFENTRY)) { 5195 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5196 error = ENOENT; 5197 break; 5198 } 5199 5200 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 5201 5202 /* choose this one */ 5203 last_fe_icb_loc = icb_loc; 5204 5205 /* record and process/update (ext)fentry */ 5206 file_data = NULL; 5207 if (dscr_type == TAGID_FENTRY) { 5208 if (udf_node->fe) 5209 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5210 udf_node->fe); 5211 udf_node->fe = &dscr->fe; 5212 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 5213 udf_file_type = udf_node->fe->icbtag.file_type; 5214 file_size = udf_rw64(udf_node->fe->inf_len); 5215 file_data = udf_node->fe->data; 5216 } else { 5217 if (udf_node->efe) 5218 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5219 udf_node->efe); 5220 udf_node->efe = &dscr->efe; 5221 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 5222 udf_file_type = udf_node->efe->icbtag.file_type; 5223 file_size = udf_rw64(udf_node->efe->inf_len); 5224 file_data = udf_node->efe->data; 5225 } 5226 5227 /* check recording strategy (structure) */ 5228 5229 /* 5230 * Strategy 4096 is a daisy linked chain terminating with an 5231 * unrecorded sector or a TERM descriptor. The next 5232 * descriptor is to be found in the sector that follows the 5233 * current sector. 5234 */ 5235 if (strat == 4096) { 5236 strat4096 = 1; 5237 needs_indirect = 1; 5238 5239 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 5240 } 5241 5242 /* 5243 * Strategy 4 is the normal strategy and terminates, but if 5244 * we're in strategy 4096, we can't have strategy 4 mixed in 5245 */ 5246 5247 if (strat == 4) { 5248 if (strat4096) { 5249 error = EINVAL; 5250 break; 5251 } 5252 break; /* done */ 5253 } 5254 } while (!error); 5255 5256 /* first round of cleanup code */ 5257 if (error) { 5258 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 5259 /* recycle udf_node */ 5260 udf_dispose_node(udf_node); 5261 5262 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5263 nvp->v_data = NULL; 5264 ungetnewvnode(nvp); 5265 5266 return EINVAL; /* error code ok? */ 5267 } 5268 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 5269 5270 /* assert no references to dscr anymore beyong this point */ 5271 assert((udf_node->fe) || (udf_node->efe)); 5272 dscr = NULL; 5273 5274 /* 5275 * Remember where to record an updated version of the descriptor. If 5276 * there is a sequence of indirect entries, icb_loc will have been 5277 * updated. Its the write disipline to allocate new space and to make 5278 * sure the chain is maintained. 5279 * 5280 * `needs_indirect' flags if the next location is to be filled with 5281 * with an indirect entry. 5282 */ 5283 udf_node->write_loc = icb_loc; 5284 udf_node->needs_indirect = needs_indirect; 5285 5286 /* 5287 * Go trough all allocations extents of this descriptor and when 5288 * encountering a redirect read in the allocation extension. These are 5289 * daisy-chained. 5290 */ 5291 UDF_LOCK_NODE(udf_node, 0); 5292 udf_node->num_extensions = 0; 5293 5294 error = 0; 5295 slot = 0; 5296 for (;;) { 5297 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 5298 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 5299 "lb_num = %d, part = %d\n", slot, eof, 5300 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 5301 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 5302 udf_rw32(icb_loc.loc.lb_num), 5303 udf_rw16(icb_loc.loc.part_num))); 5304 if (eof) 5305 break; 5306 slot++; 5307 5308 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 5309 continue; 5310 5311 DPRINTF(NODE, ("\tgot redirect extent\n")); 5312 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 5313 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 5314 "too many allocation extensions on " 5315 "udf_node\n")); 5316 error = EINVAL; 5317 break; 5318 } 5319 5320 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 5321 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 5322 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 5323 "extension size in udf_node\n")); 5324 error = EINVAL; 5325 break; 5326 } 5327 5328 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 5329 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 5330 /* load in allocation extent */ 5331 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5332 if (error || (dscr == NULL)) 5333 break; 5334 5335 /* process read-in descriptor */ 5336 dscr_type = udf_rw16(dscr->tag.id); 5337 5338 if (dscr_type != TAGID_ALLOCEXTENT) { 5339 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5340 error = ENOENT; 5341 break; 5342 } 5343 5344 DPRINTF(NODE, ("\trecording redirect extent\n")); 5345 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5346 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5347 5348 udf_node->num_extensions++; 5349 5350 } /* while */ 5351 UDF_UNLOCK_NODE(udf_node, 0); 5352 5353 /* second round of cleanup code */ 5354 if (error) { 5355 /* recycle udf_node */ 5356 udf_dispose_node(udf_node); 5357 5358 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5359 nvp->v_data = NULL; 5360 ungetnewvnode(nvp); 5361 5362 return EINVAL; /* error code ok? */ 5363 } 5364 5365 DPRINTF(NODE, ("\tnode read in fine\n")); 5366 5367 /* 5368 * Translate UDF filetypes into vnode types. 5369 * 5370 * Systemfiles like the meta main and mirror files are not treated as 5371 * normal files, so we type them as having no type. UDF dictates that 5372 * they are not allowed to be visible. 5373 */ 5374 5375 switch (udf_file_type) { 5376 case UDF_ICB_FILETYPE_DIRECTORY : 5377 case UDF_ICB_FILETYPE_STREAMDIR : 5378 nvp->v_type = VDIR; 5379 break; 5380 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5381 nvp->v_type = VBLK; 5382 break; 5383 case UDF_ICB_FILETYPE_CHARDEVICE : 5384 nvp->v_type = VCHR; 5385 break; 5386 case UDF_ICB_FILETYPE_SOCKET : 5387 nvp->v_type = VSOCK; 5388 break; 5389 case UDF_ICB_FILETYPE_FIFO : 5390 nvp->v_type = VFIFO; 5391 break; 5392 case UDF_ICB_FILETYPE_SYMLINK : 5393 nvp->v_type = VLNK; 5394 break; 5395 case UDF_ICB_FILETYPE_VAT : 5396 case UDF_ICB_FILETYPE_META_MAIN : 5397 case UDF_ICB_FILETYPE_META_MIRROR : 5398 nvp->v_type = VNON; 5399 break; 5400 case UDF_ICB_FILETYPE_RANDOMACCESS : 5401 case UDF_ICB_FILETYPE_REALTIME : 5402 nvp->v_type = VREG; 5403 break; 5404 default: 5405 /* YIKES, something else */ 5406 nvp->v_type = VNON; 5407 } 5408 5409 /* TODO specfs, fifofs etc etc. vnops setting */ 5410 5411 /* don't forget to set vnode's v_size */ 5412 uvm_vnp_setsize(nvp, file_size); 5413 5414 /* TODO ext attr and streamdir udf_nodes */ 5415 5416 *udf_noderes = udf_node; 5417 5418 return 0; 5419 } 5420 5421 /* --------------------------------------------------------------------- */ 5422 5423 int 5424 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5425 { 5426 union dscrptr *dscr; 5427 struct long_ad *loc; 5428 int extnr, error; 5429 5430 DPRINTF(NODE, ("udf_writeout_node called\n")); 5431 5432 KASSERT(udf_node->outstanding_bufs == 0); 5433 KASSERT(udf_node->outstanding_nodedscr == 0); 5434 5435 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5436 5437 if (udf_node->i_flags & IN_DELETED) { 5438 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5439 return 0; 5440 } 5441 5442 /* lock node */ 5443 UDF_LOCK_NODE(udf_node, 0); 5444 5445 /* at least one descriptor writeout */ 5446 udf_node->outstanding_nodedscr = 1; 5447 5448 /* we're going to write out the descriptor so clear the flags */ 5449 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5450 5451 /* if we were rebuild, write out the allocation extents */ 5452 if (udf_node->i_flags & IN_NODE_REBUILD) { 5453 /* mark outstanding node descriptors and issue them */ 5454 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5455 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5456 loc = &udf_node->ext_loc[extnr]; 5457 dscr = (union dscrptr *) udf_node->ext[extnr]; 5458 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5459 if (error) 5460 return error; 5461 } 5462 /* mark allocation extents written out */ 5463 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5464 } 5465 5466 if (udf_node->fe) { 5467 KASSERT(udf_node->efe == NULL); 5468 dscr = (union dscrptr *) udf_node->fe; 5469 } else { 5470 KASSERT(udf_node->efe); 5471 KASSERT(udf_node->fe == NULL); 5472 dscr = (union dscrptr *) udf_node->efe; 5473 } 5474 KASSERT(dscr); 5475 5476 loc = &udf_node->write_loc; 5477 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5478 return error; 5479 } 5480 5481 /* --------------------------------------------------------------------- */ 5482 5483 int 5484 udf_dispose_node(struct udf_node *udf_node) 5485 { 5486 struct vnode *vp; 5487 int extnr; 5488 5489 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5490 if (!udf_node) { 5491 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5492 return 0; 5493 } 5494 5495 vp = udf_node->vnode; 5496 #ifdef DIAGNOSTIC 5497 if (vp->v_numoutput) 5498 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5499 "v_numoutput = %d", udf_node, vp->v_numoutput); 5500 #endif 5501 5502 /* wait until out of sync (just in case we happen to stumble over one */ 5503 KASSERT(!mutex_owned(&mntvnode_lock)); 5504 mutex_enter(&mntvnode_lock); 5505 while (udf_node->i_flags & IN_SYNCED) { 5506 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5507 hz/16); 5508 } 5509 mutex_exit(&mntvnode_lock); 5510 5511 /* TODO extended attributes and streamdir */ 5512 5513 /* remove dirhash if present */ 5514 dirhash_purge(&udf_node->dir_hash); 5515 5516 /* remove from our hash lookup table */ 5517 udf_deregister_node(udf_node); 5518 5519 /* destroy our lock */ 5520 mutex_destroy(&udf_node->node_mutex); 5521 cv_destroy(&udf_node->node_lock); 5522 5523 /* dissociate our udf_node from the vnode */ 5524 genfs_node_destroy(udf_node->vnode); 5525 vp->v_data = NULL; 5526 5527 /* free associated memory and the node itself */ 5528 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5529 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5530 udf_node->ext[extnr]); 5531 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5532 } 5533 5534 if (udf_node->fe) 5535 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5536 udf_node->fe); 5537 if (udf_node->efe) 5538 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5539 udf_node->efe); 5540 5541 udf_node->fe = (void *) 0xdeadaaaa; 5542 udf_node->efe = (void *) 0xdeadbbbb; 5543 udf_node->ump = (void *) 0xdeadbeef; 5544 pool_put(&udf_node_pool, udf_node); 5545 5546 return 0; 5547 } 5548 5549 5550 5551 /* 5552 * create a new node using the specified vnodeops, vap and cnp but with the 5553 * udf_file_type. This allows special files to be created. Use with care. 5554 */ 5555 5556 static int 5557 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5558 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5559 { 5560 union dscrptr *dscr; 5561 struct udf_node *dir_node = VTOI(dvp);; 5562 struct udf_node *udf_node; 5563 struct udf_mount *ump = dir_node->ump; 5564 struct vnode *nvp; 5565 struct long_ad node_icb_loc; 5566 uint64_t parent_unique_id; 5567 uint64_t lmapping; 5568 uint32_t lb_size, lb_num; 5569 uint16_t vpart_num; 5570 uid_t uid; 5571 gid_t gid, parent_gid; 5572 int fid_size, error; 5573 5574 lb_size = udf_rw32(ump->logical_vol->lb_size); 5575 *vpp = NULL; 5576 5577 /* allocate vnode */ 5578 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5579 if (error) 5580 return error; 5581 5582 /* lock node */ 5583 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5584 if (error) { 5585 nvp->v_data = NULL; 5586 ungetnewvnode(nvp); 5587 return error; 5588 } 5589 5590 /* get disc allocation for one logical block */ 5591 vpart_num = ump->node_part; 5592 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5593 vpart_num, &lmapping); 5594 lb_num = lmapping; 5595 if (error) { 5596 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5597 ungetnewvnode(nvp); 5598 return error; 5599 } 5600 5601 /* initialise pointer to location */ 5602 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5603 node_icb_loc.len = udf_rw32(lb_size); 5604 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5605 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5606 5607 /* build udf_node (do initialise!) */ 5608 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5609 memset(udf_node, 0, sizeof(struct udf_node)); 5610 5611 /* initialise crosslinks, note location of fe/efe for hashing */ 5612 /* bugalert: synchronise with udf_get_node() */ 5613 udf_node->ump = ump; 5614 udf_node->vnode = nvp; 5615 nvp->v_data = udf_node; 5616 udf_node->loc = node_icb_loc; 5617 udf_node->write_loc = node_icb_loc; 5618 udf_node->lockf = 0; 5619 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5620 cv_init(&udf_node->node_lock, "udf_nlk"); 5621 udf_node->outstanding_bufs = 0; 5622 udf_node->outstanding_nodedscr = 0; 5623 5624 /* initialise genfs */ 5625 genfs_node_init(nvp, &udf_genfsops); 5626 5627 /* insert into the hash lookup */ 5628 udf_register_node(udf_node); 5629 5630 /* get parent's unique ID for refering '..' if its a directory */ 5631 if (dir_node->fe) { 5632 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5633 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5634 } else { 5635 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5636 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5637 } 5638 5639 /* get descriptor */ 5640 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5641 5642 /* choose a fe or an efe for it */ 5643 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) == 2) { 5644 udf_node->fe = &dscr->fe; 5645 fid_size = udf_create_new_fe(ump, udf_node->fe, 5646 udf_file_type, &udf_node->loc, 5647 &dir_node->loc, parent_unique_id); 5648 /* TODO add extended attribute for creation time */ 5649 } else { 5650 udf_node->efe = &dscr->efe; 5651 fid_size = udf_create_new_efe(ump, udf_node->efe, 5652 udf_file_type, &udf_node->loc, 5653 &dir_node->loc, parent_unique_id); 5654 } 5655 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5656 5657 /* update vnode's size and type */ 5658 nvp->v_type = vap->va_type; 5659 uvm_vnp_setsize(nvp, fid_size); 5660 5661 /* set access mode */ 5662 udf_setaccessmode(udf_node, vap->va_mode); 5663 5664 /* set ownership */ 5665 uid = kauth_cred_geteuid(cnp->cn_cred); 5666 gid = parent_gid; 5667 udf_setownership(udf_node, uid, gid); 5668 5669 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5670 if (error) { 5671 /* free disc allocation for node */ 5672 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5673 5674 /* recycle udf_node */ 5675 udf_dispose_node(udf_node); 5676 vput(nvp); 5677 5678 *vpp = NULL; 5679 return error; 5680 } 5681 5682 /* adjust file count */ 5683 udf_adjust_filecount(udf_node, 1); 5684 5685 /* return result */ 5686 *vpp = nvp; 5687 5688 return 0; 5689 } 5690 5691 5692 int 5693 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5694 struct componentname *cnp) 5695 { 5696 int (**vnodeops)(void *); 5697 int udf_file_type; 5698 5699 DPRINTF(NODE, ("udf_create_node called\n")); 5700 5701 /* what type are we creating ? */ 5702 vnodeops = udf_vnodeop_p; 5703 /* start with a default */ 5704 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5705 5706 *vpp = NULL; 5707 5708 switch (vap->va_type) { 5709 case VREG : 5710 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5711 break; 5712 case VDIR : 5713 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5714 break; 5715 case VLNK : 5716 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5717 break; 5718 case VBLK : 5719 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5720 /* specfs */ 5721 return ENOTSUP; 5722 break; 5723 case VCHR : 5724 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5725 /* specfs */ 5726 return ENOTSUP; 5727 break; 5728 case VFIFO : 5729 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5730 /* specfs */ 5731 return ENOTSUP; 5732 break; 5733 case VSOCK : 5734 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5735 /* specfs */ 5736 return ENOTSUP; 5737 break; 5738 case VNON : 5739 case VBAD : 5740 default : 5741 /* nothing; can we even create these? */ 5742 return EINVAL; 5743 } 5744 5745 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5746 } 5747 5748 /* --------------------------------------------------------------------- */ 5749 5750 static void 5751 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5752 { 5753 struct udf_mount *ump = udf_node->ump; 5754 uint32_t lb_size, lb_num, len, num_lb; 5755 uint16_t vpart_num; 5756 5757 /* is there really one? */ 5758 if (mem == NULL) 5759 return; 5760 5761 /* got a descriptor here */ 5762 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5763 lb_num = udf_rw32(loc->loc.lb_num); 5764 vpart_num = udf_rw16(loc->loc.part_num); 5765 5766 lb_size = udf_rw32(ump->logical_vol->lb_size); 5767 num_lb = (len + lb_size -1) / lb_size; 5768 5769 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5770 } 5771 5772 void 5773 udf_delete_node(struct udf_node *udf_node) 5774 { 5775 void *dscr; 5776 struct udf_mount *ump; 5777 struct long_ad *loc; 5778 int extnr, lvint, dummy; 5779 5780 ump = udf_node->ump; 5781 5782 /* paranoia check on integrity; should be open!; we could panic */ 5783 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5784 if (lvint == UDF_INTEGRITY_CLOSED) 5785 printf("\tIntegrity was CLOSED!\n"); 5786 5787 /* whatever the node type, change its size to zero */ 5788 (void) udf_resize_node(udf_node, 0, &dummy); 5789 5790 /* force it to be `clean'; no use writing it out */ 5791 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5792 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5793 5794 /* adjust file count */ 5795 udf_adjust_filecount(udf_node, -1); 5796 5797 /* 5798 * Free its allocated descriptors; memory will be released when 5799 * vop_reclaim() is called. 5800 */ 5801 loc = &udf_node->loc; 5802 5803 dscr = udf_node->fe; 5804 udf_free_descriptor_space(udf_node, loc, dscr); 5805 dscr = udf_node->efe; 5806 udf_free_descriptor_space(udf_node, loc, dscr); 5807 5808 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5809 dscr = udf_node->ext[extnr]; 5810 loc = &udf_node->ext_loc[extnr]; 5811 udf_free_descriptor_space(udf_node, loc, dscr); 5812 } 5813 } 5814 5815 /* --------------------------------------------------------------------- */ 5816 5817 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5818 int 5819 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5820 { 5821 struct file_entry *fe = udf_node->fe; 5822 struct extfile_entry *efe = udf_node->efe; 5823 uint64_t file_size; 5824 int error; 5825 5826 if (fe) { 5827 file_size = udf_rw64(fe->inf_len); 5828 } else { 5829 assert(udf_node->efe); 5830 file_size = udf_rw64(efe->inf_len); 5831 } 5832 5833 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5834 file_size, new_size)); 5835 5836 /* if not changing, we're done */ 5837 if (file_size == new_size) 5838 return 0; 5839 5840 *extended = (new_size > file_size); 5841 if (*extended) { 5842 error = udf_grow_node(udf_node, new_size); 5843 } else { 5844 error = udf_shrink_node(udf_node, new_size); 5845 } 5846 5847 return error; 5848 } 5849 5850 5851 /* --------------------------------------------------------------------- */ 5852 5853 void 5854 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5855 struct timespec *mod, struct timespec *birth) 5856 { 5857 struct timespec now; 5858 struct file_entry *fe; 5859 struct extfile_entry *efe; 5860 struct filetimes_extattr_entry *ft_extattr; 5861 struct timestamp *atime, *mtime, *attrtime, *ctime; 5862 struct timestamp fe_ctime; 5863 struct timespec cur_birth; 5864 uint32_t offset, a_l; 5865 uint8_t *filedata; 5866 int error; 5867 5868 /* protect against rogue values */ 5869 if (!udf_node) 5870 return; 5871 5872 fe = udf_node->fe; 5873 efe = udf_node->efe; 5874 5875 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5876 return; 5877 5878 /* get descriptor information */ 5879 if (fe) { 5880 atime = &fe->atime; 5881 mtime = &fe->mtime; 5882 attrtime = &fe->attrtime; 5883 filedata = fe->data; 5884 5885 /* initial save dummy setting */ 5886 ctime = &fe_ctime; 5887 5888 /* check our extended attribute if present */ 5889 error = udf_extattr_search_intern(udf_node, 5890 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5891 if (!error) { 5892 ft_extattr = (struct filetimes_extattr_entry *) 5893 (filedata + offset); 5894 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5895 ctime = &ft_extattr->times[0]; 5896 } 5897 /* TODO create the extended attribute if not found ? */ 5898 } else { 5899 assert(udf_node->efe); 5900 atime = &efe->atime; 5901 mtime = &efe->mtime; 5902 attrtime = &efe->attrtime; 5903 ctime = &efe->ctime; 5904 } 5905 5906 vfs_timestamp(&now); 5907 5908 /* set access time */ 5909 if (udf_node->i_flags & IN_ACCESS) { 5910 if (acc == NULL) 5911 acc = &now; 5912 udf_timespec_to_timestamp(acc, atime); 5913 } 5914 5915 /* set modification time */ 5916 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5917 if (mod == NULL) 5918 mod = &now; 5919 udf_timespec_to_timestamp(mod, mtime); 5920 5921 /* ensure birthtime is older than set modification! */ 5922 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5923 if ((cur_birth.tv_sec > mod->tv_sec) || 5924 ((cur_birth.tv_sec == mod->tv_sec) && 5925 (cur_birth.tv_nsec > mod->tv_nsec))) { 5926 udf_timespec_to_timestamp(mod, ctime); 5927 } 5928 } 5929 5930 /* update birthtime if specified */ 5931 /* XXX we asume here that given birthtime is older than mod */ 5932 if (birth && (birth->tv_sec != VNOVAL)) { 5933 udf_timespec_to_timestamp(birth, ctime); 5934 } 5935 5936 /* set change time */ 5937 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5938 udf_timespec_to_timestamp(&now, attrtime); 5939 5940 /* notify updates to the node itself */ 5941 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5942 udf_node->i_flags |= IN_ACCESSED; 5943 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5944 udf_node->i_flags |= IN_MODIFIED; 5945 5946 /* clear modification flags */ 5947 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5948 } 5949 5950 /* --------------------------------------------------------------------- */ 5951 5952 int 5953 udf_update(struct vnode *vp, struct timespec *acc, 5954 struct timespec *mod, struct timespec *birth, int updflags) 5955 { 5956 union dscrptr *dscrptr; 5957 struct udf_node *udf_node = VTOI(vp); 5958 struct udf_mount *ump = udf_node->ump; 5959 struct regid *impl_id; 5960 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5961 int waitfor, flags; 5962 5963 #ifdef DEBUG 5964 char bits[128]; 5965 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5966 updflags)); 5967 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5968 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5969 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5970 #endif 5971 5972 /* set our times */ 5973 udf_itimes(udf_node, acc, mod, birth); 5974 5975 /* set our implementation id */ 5976 if (udf_node->fe) { 5977 dscrptr = (union dscrptr *) udf_node->fe; 5978 impl_id = &udf_node->fe->imp_id; 5979 } else { 5980 dscrptr = (union dscrptr *) udf_node->efe; 5981 impl_id = &udf_node->efe->imp_id; 5982 } 5983 5984 /* set our ID */ 5985 udf_set_regid(impl_id, IMPL_NAME); 5986 udf_add_impl_regid(ump, impl_id); 5987 5988 /* update our crc! on RMW we are not allowed to change a thing */ 5989 udf_validate_tag_and_crc_sums(dscrptr); 5990 5991 /* if called when mounted readonly, never write back */ 5992 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5993 return 0; 5994 5995 /* check if the node is dirty 'enough'*/ 5996 if (updflags & UPDATE_CLOSE) { 5997 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5998 } else { 5999 flags = udf_node->i_flags & IN_MODIFIED; 6000 } 6001 if (flags == 0) 6002 return 0; 6003 6004 /* determine if we need to write sync or async */ 6005 waitfor = 0; 6006 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 6007 /* sync mounted */ 6008 waitfor = updflags & UPDATE_WAIT; 6009 if (updflags & UPDATE_DIROP) 6010 waitfor |= UPDATE_WAIT; 6011 } 6012 if (waitfor) 6013 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 6014 6015 return 0; 6016 } 6017 6018 6019 /* --------------------------------------------------------------------- */ 6020 6021 6022 /* 6023 * Read one fid and process it into a dirent and advance to the next (*fid) 6024 * has to be allocated a logical block in size, (*dirent) struct dirent length 6025 */ 6026 6027 int 6028 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 6029 struct fileid_desc *fid, struct dirent *dirent) 6030 { 6031 struct udf_node *dir_node = VTOI(vp); 6032 struct udf_mount *ump = dir_node->ump; 6033 struct file_entry *fe = dir_node->fe; 6034 struct extfile_entry *efe = dir_node->efe; 6035 uint32_t fid_size, lb_size; 6036 uint64_t file_size; 6037 char *fid_name; 6038 int enough, error; 6039 6040 assert(fid); 6041 assert(dirent); 6042 assert(dir_node); 6043 assert(offset); 6044 assert(*offset != 1); 6045 6046 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 6047 /* check if we're past the end of the directory */ 6048 if (fe) { 6049 file_size = udf_rw64(fe->inf_len); 6050 } else { 6051 assert(dir_node->efe); 6052 file_size = udf_rw64(efe->inf_len); 6053 } 6054 if (*offset >= file_size) 6055 return EINVAL; 6056 6057 /* get maximum length of FID descriptor */ 6058 lb_size = udf_rw32(ump->logical_vol->lb_size); 6059 6060 /* initialise return values */ 6061 fid_size = 0; 6062 memset(dirent, 0, sizeof(struct dirent)); 6063 memset(fid, 0, lb_size); 6064 6065 enough = (file_size - (*offset) >= UDF_FID_SIZE); 6066 if (!enough) { 6067 /* short dir ... */ 6068 return EIO; 6069 } 6070 6071 error = vn_rdwr(UIO_READ, vp, 6072 fid, MIN(file_size - (*offset), lb_size), *offset, 6073 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 6074 NULL, NULL); 6075 if (error) 6076 return error; 6077 6078 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 6079 /* 6080 * Check if we got a whole descriptor. 6081 * TODO Try to `resync' directory stream when something is very wrong. 6082 */ 6083 6084 /* check if our FID header is OK */ 6085 error = udf_check_tag(fid); 6086 if (error) { 6087 goto brokendir; 6088 } 6089 DPRINTF(FIDS, ("\ttag check ok\n")); 6090 6091 if (udf_rw16(fid->tag.id) != TAGID_FID) { 6092 error = EIO; 6093 goto brokendir; 6094 } 6095 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 6096 6097 /* check for length */ 6098 fid_size = udf_fidsize(fid); 6099 enough = (file_size - (*offset) >= fid_size); 6100 if (!enough) { 6101 error = EIO; 6102 goto brokendir; 6103 } 6104 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 6105 6106 /* check FID contents */ 6107 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 6108 brokendir: 6109 if (error) { 6110 /* note that is sometimes a bit quick to report */ 6111 printf("BROKEN DIRECTORY ENTRY\n"); 6112 /* RESYNC? */ 6113 /* TODO: use udf_resync_fid_stream */ 6114 return EIO; 6115 } 6116 DPRINTF(FIDS, ("\tpayload checked ok\n")); 6117 6118 /* we got a whole and valid descriptor! */ 6119 DPRINTF(FIDS, ("\tinterpret FID\n")); 6120 6121 /* create resulting dirent structure */ 6122 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 6123 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 6124 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 6125 6126 /* '..' has no name, so provide one */ 6127 if (fid->file_char & UDF_FILE_CHAR_PAR) 6128 strcpy(dirent->d_name, ".."); 6129 6130 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 6131 dirent->d_namlen = strlen(dirent->d_name); 6132 dirent->d_reclen = _DIRENT_SIZE(dirent); 6133 6134 /* 6135 * Note that its not worth trying to go for the filetypes now... its 6136 * too expensive too 6137 */ 6138 dirent->d_type = DT_UNKNOWN; 6139 6140 /* initial guess for filetype we can make */ 6141 if (fid->file_char & UDF_FILE_CHAR_DIR) 6142 dirent->d_type = DT_DIR; 6143 6144 /* advance */ 6145 *offset += fid_size; 6146 6147 return error; 6148 } 6149 6150 6151 /* --------------------------------------------------------------------- */ 6152 6153 static void 6154 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 6155 int pass, int *ndirty) 6156 { 6157 struct udf_node *udf_node, *n_udf_node; 6158 struct vnode *vp; 6159 int vdirty, error; 6160 int on_type, on_flags, on_vnode; 6161 6162 derailed: 6163 KASSERT(mutex_owned(&mntvnode_lock)); 6164 6165 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 6166 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 6167 for (;udf_node; udf_node = n_udf_node) { 6168 DPRINTF(SYNC, (".")); 6169 6170 udf_node->i_flags &= ~IN_SYNCED; 6171 vp = udf_node->vnode; 6172 6173 mutex_enter(&vp->v_interlock); 6174 n_udf_node = LIST_NEXT(udf_node, sortchain); 6175 if (n_udf_node) 6176 n_udf_node->i_flags |= IN_SYNCED; 6177 6178 /* system nodes are not synced this way */ 6179 if (vp->v_vflag & VV_SYSTEM) { 6180 mutex_exit(&vp->v_interlock); 6181 continue; 6182 } 6183 6184 /* check if its dirty enough to even try */ 6185 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 6186 on_flags = ((udf_node->i_flags & 6187 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 6188 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 6189 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 6190 if (on_type || (on_flags || on_vnode)) { /* XXX */ 6191 /* not dirty (enough?) */ 6192 mutex_exit(&vp->v_interlock); 6193 continue; 6194 } 6195 6196 mutex_exit(&mntvnode_lock); 6197 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 6198 if (error) { 6199 mutex_enter(&mntvnode_lock); 6200 if (error == ENOENT) 6201 goto derailed; 6202 *ndirty += 1; 6203 continue; 6204 } 6205 6206 switch (pass) { 6207 case 1: 6208 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 6209 break; 6210 case 2: 6211 vdirty = vp->v_numoutput; 6212 if (vp->v_tag == VT_UDF) 6213 vdirty += udf_node->outstanding_bufs + 6214 udf_node->outstanding_nodedscr; 6215 if (vdirty == 0) 6216 VOP_FSYNC(vp, cred, 0,0,0); 6217 *ndirty += vdirty; 6218 break; 6219 case 3: 6220 vdirty = vp->v_numoutput; 6221 if (vp->v_tag == VT_UDF) 6222 vdirty += udf_node->outstanding_bufs + 6223 udf_node->outstanding_nodedscr; 6224 *ndirty += vdirty; 6225 break; 6226 } 6227 6228 vput(vp); 6229 mutex_enter(&mntvnode_lock); 6230 } 6231 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 6232 } 6233 6234 6235 void 6236 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 6237 { 6238 int dummy, ndirty; 6239 6240 mutex_enter(&mntvnode_lock); 6241 recount: 6242 dummy = 0; 6243 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6244 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6245 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 6246 6247 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6248 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6249 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 6250 6251 if (waitfor == MNT_WAIT) { 6252 ndirty = ump->devvp->v_numoutput; 6253 DPRINTF(SYNC, ("counting pending blocks: on devvp %d\n", 6254 ndirty)); 6255 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 6256 DPRINTF(SYNC, ("counted num dirty pending blocks %d\n", 6257 ndirty)); 6258 6259 if (ndirty) { 6260 /* 1/4 second wait */ 6261 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 6262 hz/4); 6263 goto recount; 6264 } 6265 } 6266 6267 mutex_exit(&mntvnode_lock); 6268 } 6269 6270 /* --------------------------------------------------------------------- */ 6271 6272 /* 6273 * Read and write file extent in/from the buffer. 6274 * 6275 * The splitup of the extent into seperate request-buffers is to minimise 6276 * copying around as much as possible. 6277 * 6278 * block based file reading and writing 6279 */ 6280 6281 static int 6282 udf_read_internal(struct udf_node *node, uint8_t *blob) 6283 { 6284 struct udf_mount *ump; 6285 struct file_entry *fe = node->fe; 6286 struct extfile_entry *efe = node->efe; 6287 uint64_t inflen; 6288 uint32_t sector_size; 6289 uint8_t *pos; 6290 int icbflags, addr_type; 6291 6292 /* get extent and do some paranoia checks */ 6293 ump = node->ump; 6294 sector_size = ump->discinfo.sector_size; 6295 6296 if (fe) { 6297 inflen = udf_rw64(fe->inf_len); 6298 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6299 icbflags = udf_rw16(fe->icbtag.flags); 6300 } else { 6301 assert(node->efe); 6302 inflen = udf_rw64(efe->inf_len); 6303 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6304 icbflags = udf_rw16(efe->icbtag.flags); 6305 } 6306 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6307 6308 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6309 assert(inflen < sector_size); 6310 6311 /* copy out info */ 6312 memset(blob, 0, sector_size); 6313 memcpy(blob, pos, inflen); 6314 6315 return 0; 6316 } 6317 6318 6319 static int 6320 udf_write_internal(struct udf_node *node, uint8_t *blob) 6321 { 6322 struct udf_mount *ump; 6323 struct file_entry *fe = node->fe; 6324 struct extfile_entry *efe = node->efe; 6325 uint64_t inflen; 6326 uint32_t sector_size; 6327 uint8_t *pos; 6328 int icbflags, addr_type; 6329 6330 /* get extent and do some paranoia checks */ 6331 ump = node->ump; 6332 sector_size = ump->discinfo.sector_size; 6333 6334 if (fe) { 6335 inflen = udf_rw64(fe->inf_len); 6336 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6337 icbflags = udf_rw16(fe->icbtag.flags); 6338 } else { 6339 assert(node->efe); 6340 inflen = udf_rw64(efe->inf_len); 6341 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6342 icbflags = udf_rw16(efe->icbtag.flags); 6343 } 6344 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6345 6346 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6347 assert(inflen < sector_size); 6348 6349 /* copy in blob */ 6350 /* memset(pos, 0, inflen); */ 6351 memcpy(pos, blob, inflen); 6352 6353 return 0; 6354 } 6355 6356 6357 void 6358 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6359 { 6360 struct buf *nestbuf; 6361 struct udf_mount *ump = udf_node->ump; 6362 uint64_t *mapping; 6363 uint64_t run_start; 6364 uint32_t sector_size; 6365 uint32_t buf_offset, sector, rbuflen, rblk; 6366 uint32_t from, lblkno; 6367 uint32_t sectors; 6368 uint8_t *buf_pos; 6369 int error, run_length, isdir, what; 6370 6371 sector_size = udf_node->ump->discinfo.sector_size; 6372 6373 from = buf->b_blkno; 6374 sectors = buf->b_bcount / sector_size; 6375 6376 isdir = (udf_node->vnode->v_type == VDIR); 6377 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6378 6379 /* assure we have enough translation slots */ 6380 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6381 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6382 6383 if (sectors > UDF_MAX_MAPPINGS) { 6384 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6385 buf->b_error = EIO; 6386 biodone(buf); 6387 return; 6388 } 6389 6390 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6391 6392 error = 0; 6393 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6394 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6395 if (error) { 6396 buf->b_error = error; 6397 biodone(buf); 6398 goto out; 6399 } 6400 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6401 6402 /* pre-check if its an internal */ 6403 if (*mapping == UDF_TRANS_INTERN) { 6404 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6405 if (error) 6406 buf->b_error = error; 6407 biodone(buf); 6408 goto out; 6409 } 6410 DPRINTF(READ, ("\tnot intern\n")); 6411 6412 #ifdef DEBUG 6413 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6414 printf("Returned translation table:\n"); 6415 for (sector = 0; sector < sectors; sector++) { 6416 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6417 } 6418 } 6419 #endif 6420 6421 /* request read-in of data from disc sheduler */ 6422 buf->b_resid = buf->b_bcount; 6423 for (sector = 0; sector < sectors; sector++) { 6424 buf_offset = sector * sector_size; 6425 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6426 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6427 6428 /* check if its zero or unmapped to stop reading */ 6429 switch (mapping[sector]) { 6430 case UDF_TRANS_UNMAPPED: 6431 case UDF_TRANS_ZERO: 6432 /* copy zero sector TODO runlength like below */ 6433 memset(buf_pos, 0, sector_size); 6434 DPRINTF(READ, ("\treturning zero sector\n")); 6435 nestiobuf_done(buf, sector_size, 0); 6436 break; 6437 default : 6438 DPRINTF(READ, ("\tread sector " 6439 "%"PRIu64"\n", mapping[sector])); 6440 6441 lblkno = from + sector; 6442 run_start = mapping[sector]; 6443 run_length = 1; 6444 while (sector < sectors-1) { 6445 if (mapping[sector+1] != mapping[sector]+1) 6446 break; 6447 run_length++; 6448 sector++; 6449 } 6450 6451 /* 6452 * nest an iobuf and mark it for async reading. Since 6453 * we're using nested buffers, they can't be cached by 6454 * design. 6455 */ 6456 rbuflen = run_length * sector_size; 6457 rblk = run_start * (sector_size/DEV_BSIZE); 6458 6459 nestbuf = getiobuf(NULL, true); 6460 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6461 /* nestbuf is B_ASYNC */ 6462 6463 /* identify this nestbuf */ 6464 nestbuf->b_lblkno = lblkno; 6465 assert(nestbuf->b_vp == udf_node->vnode); 6466 6467 /* CD shedules on raw blkno */ 6468 nestbuf->b_blkno = rblk; 6469 nestbuf->b_proc = NULL; 6470 nestbuf->b_rawblkno = rblk; 6471 nestbuf->b_udf_c_type = what; 6472 6473 udf_discstrat_queuebuf(ump, nestbuf); 6474 } 6475 } 6476 out: 6477 /* if we're synchronously reading, wait for the completion */ 6478 if ((buf->b_flags & B_ASYNC) == 0) 6479 biowait(buf); 6480 6481 DPRINTF(READ, ("\tend of read_filebuf\n")); 6482 free(mapping, M_TEMP); 6483 return; 6484 } 6485 6486 6487 void 6488 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6489 { 6490 struct buf *nestbuf; 6491 struct udf_mount *ump = udf_node->ump; 6492 uint64_t *mapping; 6493 uint64_t run_start; 6494 uint32_t lb_size; 6495 uint32_t buf_offset, lb_num, rbuflen, rblk; 6496 uint32_t from, lblkno; 6497 uint32_t num_lb; 6498 uint8_t *buf_pos; 6499 int error, run_length, isdir, what, s; 6500 6501 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6502 6503 from = buf->b_blkno; 6504 num_lb = buf->b_bcount / lb_size; 6505 6506 isdir = (udf_node->vnode->v_type == VDIR); 6507 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6508 6509 if (udf_node == ump->metadatabitmap_node) 6510 what = UDF_C_METADATA_SBM; 6511 6512 /* assure we have enough translation slots */ 6513 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6514 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6515 6516 if (num_lb > UDF_MAX_MAPPINGS) { 6517 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6518 buf->b_error = EIO; 6519 biodone(buf); 6520 return; 6521 } 6522 6523 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6524 6525 error = 0; 6526 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6527 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6528 if (error) { 6529 buf->b_error = error; 6530 biodone(buf); 6531 goto out; 6532 } 6533 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6534 6535 /* if its internally mapped, we can write it in the descriptor itself */ 6536 if (*mapping == UDF_TRANS_INTERN) { 6537 /* TODO paranoia check if we ARE going to have enough space */ 6538 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6539 if (error) 6540 buf->b_error = error; 6541 biodone(buf); 6542 goto out; 6543 } 6544 DPRINTF(WRITE, ("\tnot intern\n")); 6545 6546 /* request write out of data to disc sheduler */ 6547 buf->b_resid = buf->b_bcount; 6548 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6549 buf_offset = lb_num * lb_size; 6550 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6551 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6552 6553 /* 6554 * Mappings are not that important here. Just before we write 6555 * the lb_num we late-allocate them when needed and update the 6556 * mapping in the udf_node. 6557 */ 6558 6559 /* XXX why not ignore the mapping altogether ? */ 6560 /* TODO estimate here how much will be late-allocated */ 6561 DPRINTF(WRITE, ("\twrite lb_num " 6562 "%"PRIu64, mapping[lb_num])); 6563 6564 lblkno = from + lb_num; 6565 run_start = mapping[lb_num]; 6566 run_length = 1; 6567 while (lb_num < num_lb-1) { 6568 if (mapping[lb_num+1] != mapping[lb_num]+1) 6569 if (mapping[lb_num+1] != mapping[lb_num]) 6570 break; 6571 run_length++; 6572 lb_num++; 6573 } 6574 DPRINTF(WRITE, ("+ %d\n", run_length)); 6575 6576 /* nest an iobuf on the master buffer for the extent */ 6577 rbuflen = run_length * lb_size; 6578 rblk = run_start * (lb_size/DEV_BSIZE); 6579 6580 #if 0 6581 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6582 switch (mapping[lb_num]) { 6583 case UDF_TRANS_UNMAPPED: 6584 case UDF_TRANS_ZERO: 6585 rblk = -1; 6586 break; 6587 default: 6588 rblk = run_start * (lb_size/DEV_BSIZE); 6589 break; 6590 } 6591 #endif 6592 6593 nestbuf = getiobuf(NULL, true); 6594 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6595 /* nestbuf is B_ASYNC */ 6596 6597 /* identify this nestbuf */ 6598 nestbuf->b_lblkno = lblkno; 6599 KASSERT(nestbuf->b_vp == udf_node->vnode); 6600 6601 /* CD shedules on raw blkno */ 6602 nestbuf->b_blkno = rblk; 6603 nestbuf->b_proc = NULL; 6604 nestbuf->b_rawblkno = rblk; 6605 nestbuf->b_udf_c_type = what; 6606 6607 /* increment our outstanding bufs counter */ 6608 s = splbio(); 6609 udf_node->outstanding_bufs++; 6610 splx(s); 6611 6612 udf_discstrat_queuebuf(ump, nestbuf); 6613 } 6614 out: 6615 /* if we're synchronously writing, wait for the completion */ 6616 if ((buf->b_flags & B_ASYNC) == 0) 6617 biowait(buf); 6618 6619 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6620 free(mapping, M_TEMP); 6621 return; 6622 } 6623 6624 /* --------------------------------------------------------------------- */ 6625 6626 6627
Indexes created Mon Sep 29 03:10:08 GMT 2025