udf_subr.c revision 1.73.4.8
1 /* $NetBSD: udf_subr.c,v 1.73.4.8 2009/02/18 00:51:27 snj 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 1.73.4.8 2009/02/18 00:51:27 snj 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 snprintb(bits, sizeof(bits), MMC_TRACKINFO_FLAGBITS, trackinfo->flags); 170 printf("\tflags %s\n", bits); 171 172 printf("\ttrack start %d\n", trackinfo->track_start); 173 printf("\tnext_writable %d\n", trackinfo->next_writable); 174 printf("\tfree_blocks %d\n", trackinfo->free_blocks); 175 printf("\tpacket_size %d\n", trackinfo->packet_size); 176 printf("\ttrack size %d\n", trackinfo->track_size); 177 printf("\tlast recorded block %d\n", trackinfo->last_recorded); 178 } 179 180 #else 181 #define udf_dump_discinfo(a); 182 #define udf_dump_trackinfo(a); 183 #endif 184 185 186 /* --------------------------------------------------------------------- */ 187 188 /* not called often */ 189 int 190 udf_update_discinfo(struct udf_mount *ump) 191 { 192 struct vnode *devvp = ump->devvp; 193 struct partinfo dpart; 194 struct mmc_discinfo *di; 195 int error; 196 197 DPRINTF(VOLUMES, ("read/update disc info\n")); 198 di = &ump->discinfo; 199 memset(di, 0, sizeof(struct mmc_discinfo)); 200 201 /* check if we're on a MMC capable device, i.e. CD/DVD */ 202 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 203 if (error == 0) { 204 udf_dump_discinfo(ump); 205 return 0; 206 } 207 208 /* disc partition support */ 209 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 210 if (error) 211 return ENODEV; 212 213 /* set up a disc info profile for partitions */ 214 di->mmc_profile = 0x01; /* disc type */ 215 di->mmc_class = MMC_CLASS_DISC; 216 di->disc_state = MMC_STATE_CLOSED; 217 di->last_session_state = MMC_STATE_CLOSED; 218 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 219 di->link_block_penalty = 0; 220 221 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 222 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 223 di->mmc_cap = di->mmc_cur; 224 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 225 226 /* TODO problem with last_possible_lba on resizable VND; request */ 227 di->last_possible_lba = dpart.part->p_size; 228 di->sector_size = dpart.disklab->d_secsize; 229 230 di->num_sessions = 1; 231 di->num_tracks = 1; 232 233 di->first_track = 1; 234 di->first_track_last_session = di->last_track_last_session = 1; 235 236 udf_dump_discinfo(ump); 237 return 0; 238 } 239 240 241 int 242 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 243 { 244 struct vnode *devvp = ump->devvp; 245 struct mmc_discinfo *di = &ump->discinfo; 246 int error, class; 247 248 DPRINTF(VOLUMES, ("read track info\n")); 249 250 class = di->mmc_class; 251 if (class != MMC_CLASS_DISC) { 252 /* tracknr specified in struct ti */ 253 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 254 return error; 255 } 256 257 /* disc partition support */ 258 if (ti->tracknr != 1) 259 return EIO; 260 261 /* create fake ti (TODO check for resized vnds) */ 262 ti->sessionnr = 1; 263 264 ti->track_mode = 0; /* XXX */ 265 ti->data_mode = 0; /* XXX */ 266 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 267 268 ti->track_start = 0; 269 ti->packet_size = 1; 270 271 /* TODO support for resizable vnd */ 272 ti->track_size = di->last_possible_lba; 273 ti->next_writable = di->last_possible_lba; 274 ti->last_recorded = ti->next_writable; 275 ti->free_blocks = 0; 276 277 return 0; 278 } 279 280 281 int 282 udf_setup_writeparams(struct udf_mount *ump) 283 { 284 struct mmc_writeparams mmc_writeparams; 285 int error; 286 287 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 288 return 0; 289 290 /* 291 * only CD burning normally needs setting up, but other disc types 292 * might need other settings to be made. The MMC framework will set up 293 * the nessisary recording parameters according to the disc 294 * characteristics read in. Modifications can be made in the discinfo 295 * structure passed to change the nature of the disc. 296 */ 297 298 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 299 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 300 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 301 302 /* 303 * UDF dictates first track to determine track mode for the whole 304 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 305 * To prevent problems with a `reserved' track in front we start with 306 * the 2nd track and if that is not valid, go for the 1st. 307 */ 308 mmc_writeparams.tracknr = 2; 309 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 310 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 311 312 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 313 FKIOCTL, NOCRED); 314 if (error) { 315 mmc_writeparams.tracknr = 1; 316 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 317 &mmc_writeparams, FKIOCTL, NOCRED); 318 } 319 return error; 320 } 321 322 323 int 324 udf_synchronise_caches(struct udf_mount *ump) 325 { 326 struct mmc_op mmc_op; 327 328 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 329 330 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 331 return 0; 332 333 /* discs are done now */ 334 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 335 return 0; 336 337 bzero(&mmc_op, sizeof(struct mmc_op)); 338 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 339 340 /* ignore return code */ 341 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 342 343 return 0; 344 } 345 346 /* --------------------------------------------------------------------- */ 347 348 /* track/session searching for mounting */ 349 int 350 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 351 int *first_tracknr, int *last_tracknr) 352 { 353 struct mmc_trackinfo trackinfo; 354 uint32_t tracknr, start_track, num_tracks; 355 int error; 356 357 /* if negative, sessionnr is relative to last session */ 358 if (args->sessionnr < 0) { 359 args->sessionnr += ump->discinfo.num_sessions; 360 } 361 362 /* sanity */ 363 if (args->sessionnr < 0) 364 args->sessionnr = 0; 365 if (args->sessionnr > ump->discinfo.num_sessions) 366 args->sessionnr = ump->discinfo.num_sessions; 367 368 /* search the tracks for this session, zero session nr indicates last */ 369 if (args->sessionnr == 0) 370 args->sessionnr = ump->discinfo.num_sessions; 371 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 372 args->sessionnr--; 373 374 /* sanity again */ 375 if (args->sessionnr < 0) 376 args->sessionnr = 0; 377 378 /* search the first and last track of the specified session */ 379 num_tracks = ump->discinfo.num_tracks; 380 start_track = ump->discinfo.first_track; 381 382 /* search for first track of this session */ 383 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 384 /* get track info */ 385 trackinfo.tracknr = tracknr; 386 error = udf_update_trackinfo(ump, &trackinfo); 387 if (error) 388 return error; 389 390 if (trackinfo.sessionnr == args->sessionnr) 391 break; 392 } 393 *first_tracknr = tracknr; 394 395 /* search for last track of this session */ 396 for (;tracknr <= num_tracks; tracknr++) { 397 /* get track info */ 398 trackinfo.tracknr = tracknr; 399 error = udf_update_trackinfo(ump, &trackinfo); 400 if (error || (trackinfo.sessionnr != args->sessionnr)) { 401 tracknr--; 402 break; 403 } 404 } 405 if (tracknr > num_tracks) 406 tracknr--; 407 408 *last_tracknr = tracknr; 409 410 if (*last_tracknr < *first_tracknr) { 411 printf( "udf_search_tracks: sanity check on drive+disc failed, " 412 "drive returned garbage\n"); 413 return EINVAL; 414 } 415 416 assert(*last_tracknr >= *first_tracknr); 417 return 0; 418 } 419 420 421 /* 422 * NOTE: this is the only routine in this file that directly peeks into the 423 * metadata file but since its at a larval state of the mount it can't hurt. 424 * 425 * XXX candidate for udf_allocation.c 426 * XXX clean me up!, change to new node reading code. 427 */ 428 429 static void 430 udf_check_track_metadata_overlap(struct udf_mount *ump, 431 struct mmc_trackinfo *trackinfo) 432 { 433 struct part_desc *part; 434 struct file_entry *fe; 435 struct extfile_entry *efe; 436 struct short_ad *s_ad; 437 struct long_ad *l_ad; 438 uint32_t track_start, track_end; 439 uint32_t phys_part_start, phys_part_end, part_start, part_end; 440 uint32_t sector_size, len, alloclen, plb_num; 441 uint8_t *pos; 442 int addr_type, icblen, icbflags, flags; 443 444 /* get our track extents */ 445 track_start = trackinfo->track_start; 446 track_end = track_start + trackinfo->track_size; 447 448 /* get our base partition extent */ 449 KASSERT(ump->node_part == ump->fids_part); 450 part = ump->partitions[ump->node_part]; 451 phys_part_start = udf_rw32(part->start_loc); 452 phys_part_end = phys_part_start + udf_rw32(part->part_len); 453 454 /* no use if its outside the physical partition */ 455 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 456 return; 457 458 /* 459 * now follow all extents in the fe/efe to see if they refer to this 460 * track 461 */ 462 463 sector_size = ump->discinfo.sector_size; 464 465 /* XXX should we claim exclusive access to the metafile ? */ 466 /* TODO: move to new node read code */ 467 fe = ump->metadata_node->fe; 468 efe = ump->metadata_node->efe; 469 if (fe) { 470 alloclen = udf_rw32(fe->l_ad); 471 pos = &fe->data[0] + udf_rw32(fe->l_ea); 472 icbflags = udf_rw16(fe->icbtag.flags); 473 } else { 474 assert(efe); 475 alloclen = udf_rw32(efe->l_ad); 476 pos = &efe->data[0] + udf_rw32(efe->l_ea); 477 icbflags = udf_rw16(efe->icbtag.flags); 478 } 479 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 480 481 while (alloclen) { 482 if (addr_type == UDF_ICB_SHORT_ALLOC) { 483 icblen = sizeof(struct short_ad); 484 s_ad = (struct short_ad *) pos; 485 len = udf_rw32(s_ad->len); 486 plb_num = udf_rw32(s_ad->lb_num); 487 } else { 488 /* should not be present, but why not */ 489 icblen = sizeof(struct long_ad); 490 l_ad = (struct long_ad *) pos; 491 len = udf_rw32(l_ad->len); 492 plb_num = udf_rw32(l_ad->loc.lb_num); 493 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 494 } 495 /* process extent */ 496 flags = UDF_EXT_FLAGS(len); 497 len = UDF_EXT_LEN(len); 498 499 part_start = phys_part_start + plb_num; 500 part_end = part_start + (len / sector_size); 501 502 if ((part_start >= track_start) && (part_end <= track_end)) { 503 /* extent is enclosed within this track */ 504 ump->metadata_track = *trackinfo; 505 return; 506 } 507 508 pos += icblen; 509 alloclen -= icblen; 510 } 511 } 512 513 514 int 515 udf_search_writing_tracks(struct udf_mount *ump) 516 { 517 struct vnode *devvp = ump->devvp; 518 struct mmc_trackinfo trackinfo; 519 struct mmc_op mmc_op; 520 struct part_desc *part; 521 uint32_t tracknr, start_track, num_tracks; 522 uint32_t track_start, track_end, part_start, part_end; 523 int node_alloc, error; 524 525 /* 526 * in the CD/(HD)DVD/BD recordable device model a few tracks within 527 * the last session might be open but in the UDF device model at most 528 * three tracks can be open: a reserved track for delayed ISO VRS 529 * writing, a data track and a metadata track. We search here for the 530 * data track and the metadata track. Note that the reserved track is 531 * troublesome but can be detected by its small size of < 512 sectors. 532 */ 533 534 /* update discinfo since it might have changed */ 535 error = udf_update_discinfo(ump); 536 if (error) 537 return error; 538 539 num_tracks = ump->discinfo.num_tracks; 540 start_track = ump->discinfo.first_track; 541 542 /* fetch info on first and possibly only track */ 543 trackinfo.tracknr = start_track; 544 error = udf_update_trackinfo(ump, &trackinfo); 545 if (error) 546 return error; 547 548 /* copy results to our mount point */ 549 ump->data_track = trackinfo; 550 ump->metadata_track = trackinfo; 551 552 /* if not sequential, we're done */ 553 if (num_tracks == 1) 554 return 0; 555 556 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 557 /* get track info */ 558 trackinfo.tracknr = tracknr; 559 error = udf_update_trackinfo(ump, &trackinfo); 560 if (error) 561 return error; 562 563 /* 564 * If this track is marked damaged, ask for repair. This is an 565 * optional command, so ignore its error but report warning. 566 */ 567 if (trackinfo.flags & MMC_TRACKINFO_DAMAGED) { 568 memset(&mmc_op, 0, sizeof(mmc_op)); 569 mmc_op.operation = MMC_OP_REPAIRTRACK; 570 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 571 mmc_op.tracknr = tracknr; 572 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 573 if (error) 574 (void)printf("Drive can't explicitly repair " 575 "damaged track %d, but it might " 576 "autorepair\n", tracknr); 577 578 /* reget track info */ 579 error = udf_update_trackinfo(ump, &trackinfo); 580 if (error) 581 return error; 582 } 583 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 584 continue; 585 586 track_start = trackinfo.track_start; 587 track_end = track_start + trackinfo.track_size; 588 589 /* check for overlap on data partition */ 590 part = ump->partitions[ump->data_part]; 591 part_start = udf_rw32(part->start_loc); 592 part_end = part_start + udf_rw32(part->part_len); 593 if ((part_start < track_end) && (part_end > track_start)) { 594 ump->data_track = trackinfo; 595 /* TODO check if UDF partition data_part is writable */ 596 } 597 598 /* check for overlap on metadata partition */ 599 node_alloc = ump->vtop_alloc[ump->node_part]; 600 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 601 (node_alloc == UDF_ALLOC_METABITMAP)) { 602 udf_check_track_metadata_overlap(ump, &trackinfo); 603 } else { 604 ump->metadata_track = trackinfo; 605 } 606 } 607 608 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 609 return EROFS; 610 611 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 612 return EROFS; 613 614 return 0; 615 } 616 617 /* --------------------------------------------------------------------- */ 618 619 /* 620 * Check if the blob starts with a good UDF tag. Tags are protected by a 621 * checksum over the reader except one byte at position 4 that is the checksum 622 * itself. 623 */ 624 625 int 626 udf_check_tag(void *blob) 627 { 628 struct desc_tag *tag = blob; 629 uint8_t *pos, sum, cnt; 630 631 /* check TAG header checksum */ 632 pos = (uint8_t *) tag; 633 sum = 0; 634 635 for(cnt = 0; cnt < 16; cnt++) { 636 if (cnt != 4) 637 sum += *pos; 638 pos++; 639 } 640 if (sum != tag->cksum) { 641 /* bad tag header checksum; this is not a valid tag */ 642 return EINVAL; 643 } 644 645 return 0; 646 } 647 648 649 /* 650 * check tag payload will check descriptor CRC as specified. 651 * If the descriptor is too long, it will return EIO otherwise EINVAL. 652 */ 653 654 int 655 udf_check_tag_payload(void *blob, uint32_t max_length) 656 { 657 struct desc_tag *tag = blob; 658 uint16_t crc, crc_len; 659 660 crc_len = udf_rw16(tag->desc_crc_len); 661 662 /* check payload CRC if applicable */ 663 if (crc_len == 0) 664 return 0; 665 666 if (crc_len > max_length) 667 return EIO; 668 669 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 670 if (crc != udf_rw16(tag->desc_crc)) { 671 /* bad payload CRC; this is a broken tag */ 672 return EINVAL; 673 } 674 675 return 0; 676 } 677 678 679 void 680 udf_validate_tag_sum(void *blob) 681 { 682 struct desc_tag *tag = blob; 683 uint8_t *pos, sum, cnt; 684 685 /* calculate TAG header checksum */ 686 pos = (uint8_t *) tag; 687 sum = 0; 688 689 for(cnt = 0; cnt < 16; cnt++) { 690 if (cnt != 4) sum += *pos; 691 pos++; 692 } 693 tag->cksum = sum; /* 8 bit */ 694 } 695 696 697 /* assumes sector number of descriptor to be saved already present */ 698 void 699 udf_validate_tag_and_crc_sums(void *blob) 700 { 701 struct desc_tag *tag = blob; 702 uint8_t *btag = (uint8_t *) tag; 703 uint16_t crc, crc_len; 704 705 crc_len = udf_rw16(tag->desc_crc_len); 706 707 /* check payload CRC if applicable */ 708 if (crc_len > 0) { 709 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 710 tag->desc_crc = udf_rw16(crc); 711 } 712 713 /* calculate TAG header checksum */ 714 udf_validate_tag_sum(blob); 715 } 716 717 /* --------------------------------------------------------------------- */ 718 719 /* 720 * XXX note the different semantics from udfclient: for FIDs it still rounds 721 * up to sectors. Use udf_fidsize() for a correct length. 722 */ 723 724 int 725 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 726 { 727 uint32_t size, tag_id, num_lb, elmsz; 728 729 tag_id = udf_rw16(dscr->tag.id); 730 731 switch (tag_id) { 732 case TAGID_LOGVOL : 733 size = sizeof(struct logvol_desc) - 1; 734 size += udf_rw32(dscr->lvd.mt_l); 735 break; 736 case TAGID_UNALLOC_SPACE : 737 elmsz = sizeof(struct extent_ad); 738 size = sizeof(struct unalloc_sp_desc) - elmsz; 739 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 740 break; 741 case TAGID_FID : 742 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 743 size = (size + 3) & ~3; 744 break; 745 case TAGID_LOGVOL_INTEGRITY : 746 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 747 size += udf_rw32(dscr->lvid.l_iu); 748 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 749 break; 750 case TAGID_SPACE_BITMAP : 751 size = sizeof(struct space_bitmap_desc) - 1; 752 size += udf_rw32(dscr->sbd.num_bytes); 753 break; 754 case TAGID_SPARING_TABLE : 755 elmsz = sizeof(struct spare_map_entry); 756 size = sizeof(struct udf_sparing_table) - elmsz; 757 size += udf_rw16(dscr->spt.rt_l) * elmsz; 758 break; 759 case TAGID_FENTRY : 760 size = sizeof(struct file_entry); 761 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 762 break; 763 case TAGID_EXTFENTRY : 764 size = sizeof(struct extfile_entry); 765 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 766 break; 767 case TAGID_FSD : 768 size = sizeof(struct fileset_desc); 769 break; 770 default : 771 size = sizeof(union dscrptr); 772 break; 773 } 774 775 if ((size == 0) || (lb_size == 0)) 776 return 0; 777 778 if (lb_size == 1) 779 return size; 780 781 /* round up in sectors */ 782 num_lb = (size + lb_size -1) / lb_size; 783 return num_lb * lb_size; 784 } 785 786 787 int 788 udf_fidsize(struct fileid_desc *fid) 789 { 790 uint32_t size; 791 792 if (udf_rw16(fid->tag.id) != TAGID_FID) 793 panic("got udf_fidsize on non FID\n"); 794 795 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 796 size = (size + 3) & ~3; 797 798 return size; 799 } 800 801 /* --------------------------------------------------------------------- */ 802 803 void 804 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 805 { 806 int ret; 807 808 mutex_enter(&udf_node->node_mutex); 809 /* wait until free */ 810 while (udf_node->i_flags & IN_LOCKED) { 811 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 812 /* TODO check if we should return error; abort */ 813 if (ret == EWOULDBLOCK) { 814 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 815 "wanted at %s:%d, previously locked at %s:%d\n", 816 udf_node, fname, lineno, 817 udf_node->lock_fname, udf_node->lock_lineno)); 818 } 819 } 820 /* grab */ 821 udf_node->i_flags |= IN_LOCKED | flag; 822 /* debug */ 823 udf_node->lock_fname = fname; 824 udf_node->lock_lineno = lineno; 825 826 mutex_exit(&udf_node->node_mutex); 827 } 828 829 830 void 831 udf_unlock_node(struct udf_node *udf_node, int flag) 832 { 833 mutex_enter(&udf_node->node_mutex); 834 udf_node->i_flags &= ~(IN_LOCKED | flag); 835 cv_broadcast(&udf_node->node_lock); 836 mutex_exit(&udf_node->node_mutex); 837 } 838 839 840 /* --------------------------------------------------------------------- */ 841 842 static int 843 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 844 { 845 int error; 846 847 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 848 (union dscrptr **) dst); 849 if (!error) { 850 /* blank terminator blocks are not allowed here */ 851 if (*dst == NULL) 852 return ENOENT; 853 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 854 error = ENOENT; 855 free(*dst, M_UDFVOLD); 856 *dst = NULL; 857 DPRINTF(VOLUMES, ("Not an anchor\n")); 858 } 859 } 860 861 return error; 862 } 863 864 865 int 866 udf_read_anchors(struct udf_mount *ump) 867 { 868 struct udf_args *args = &ump->mount_args; 869 struct mmc_trackinfo first_track; 870 struct mmc_trackinfo second_track; 871 struct mmc_trackinfo last_track; 872 struct anchor_vdp **anchorsp; 873 uint32_t track_start; 874 uint32_t track_end; 875 uint32_t positions[4]; 876 int first_tracknr, last_tracknr; 877 int error, anch, ok, first_anchor; 878 879 /* search the first and last track of the specified session */ 880 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 881 if (!error) { 882 first_track.tracknr = first_tracknr; 883 error = udf_update_trackinfo(ump, &first_track); 884 } 885 if (!error) { 886 last_track.tracknr = last_tracknr; 887 error = udf_update_trackinfo(ump, &last_track); 888 } 889 if ((!error) && (first_tracknr != last_tracknr)) { 890 second_track.tracknr = first_tracknr+1; 891 error = udf_update_trackinfo(ump, &second_track); 892 } 893 if (error) { 894 printf("UDF mount: reading disc geometry failed\n"); 895 return 0; 896 } 897 898 track_start = first_track.track_start; 899 900 /* `end' is not as straitforward as start. */ 901 track_end = last_track.track_start 902 + last_track.track_size - last_track.free_blocks - 1; 903 904 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 905 /* end of track is not straitforward here */ 906 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 907 track_end = last_track.last_recorded; 908 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 909 track_end = last_track.next_writable 910 - ump->discinfo.link_block_penalty; 911 } 912 913 /* its no use reading a blank track */ 914 first_anchor = 0; 915 if (first_track.flags & MMC_TRACKINFO_BLANK) 916 first_anchor = 1; 917 918 /* get our packet size */ 919 ump->packet_size = first_track.packet_size; 920 if (first_track.flags & MMC_TRACKINFO_BLANK) 921 ump->packet_size = second_track.packet_size; 922 923 if (ump->packet_size <= 1) { 924 /* take max, but not bigger than 64 */ 925 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 926 ump->packet_size = MIN(ump->packet_size, 64); 927 } 928 KASSERT(ump->packet_size >= 1); 929 930 /* read anchors start+256, start+512, end-256, end */ 931 positions[0] = track_start+256; 932 positions[1] = track_end-256; 933 positions[2] = track_end; 934 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 935 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 936 937 ok = 0; 938 anchorsp = ump->anchors; 939 for (anch = first_anchor; anch < 4; anch++) { 940 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 941 positions[anch])); 942 error = udf_read_anchor(ump, positions[anch], anchorsp); 943 if (!error) { 944 anchorsp++; 945 ok++; 946 } 947 } 948 949 /* VATs are only recorded on sequential media, but initialise */ 950 ump->first_possible_vat_location = track_start + 2; 951 ump->last_possible_vat_location = track_end + last_track.packet_size; 952 953 return ok; 954 } 955 956 /* --------------------------------------------------------------------- */ 957 958 /* we dont try to be smart; we just record the parts */ 959 #define UDF_UPDATE_DSCR(name, dscr) \ 960 if (name) \ 961 free(name, M_UDFVOLD); \ 962 name = dscr; 963 964 static int 965 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 966 { 967 struct part_desc *part; 968 uint16_t phys_part, raw_phys_part; 969 970 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 971 udf_rw16(dscr->tag.id))); 972 switch (udf_rw16(dscr->tag.id)) { 973 case TAGID_PRI_VOL : /* primary partition */ 974 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 975 break; 976 case TAGID_LOGVOL : /* logical volume */ 977 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 978 break; 979 case TAGID_UNALLOC_SPACE : /* unallocated space */ 980 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 981 break; 982 case TAGID_IMP_VOL : /* implementation */ 983 /* XXX do we care about multiple impl. descr ? */ 984 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 985 break; 986 case TAGID_PARTITION : /* physical partition */ 987 /* not much use if its not allocated */ 988 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 989 free(dscr, M_UDFVOLD); 990 break; 991 } 992 993 /* 994 * BUGALERT: some rogue implementations use random physical 995 * partion numbers to break other implementations so lookup 996 * the number. 997 */ 998 raw_phys_part = udf_rw16(dscr->pd.part_num); 999 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1000 part = ump->partitions[phys_part]; 1001 if (part == NULL) 1002 break; 1003 if (udf_rw16(part->part_num) == raw_phys_part) 1004 break; 1005 } 1006 if (phys_part == UDF_PARTITIONS) { 1007 free(dscr, M_UDFVOLD); 1008 return EINVAL; 1009 } 1010 1011 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 1012 break; 1013 case TAGID_VOL : /* volume space extender; rare */ 1014 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 1015 free(dscr, M_UDFVOLD); 1016 break; 1017 default : 1018 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 1019 udf_rw16(dscr->tag.id))); 1020 free(dscr, M_UDFVOLD); 1021 } 1022 1023 return 0; 1024 } 1025 #undef UDF_UPDATE_DSCR 1026 1027 /* --------------------------------------------------------------------- */ 1028 1029 static int 1030 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 1031 { 1032 union dscrptr *dscr; 1033 uint32_t sector_size, dscr_size; 1034 int error; 1035 1036 sector_size = ump->discinfo.sector_size; 1037 1038 /* loc is sectornr, len is in bytes */ 1039 error = EIO; 1040 while (len) { 1041 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 1042 if (error) 1043 return error; 1044 1045 /* blank block is a terminator */ 1046 if (dscr == NULL) 1047 return 0; 1048 1049 /* TERM descriptor is a terminator */ 1050 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 1051 free(dscr, M_UDFVOLD); 1052 return 0; 1053 } 1054 1055 /* process all others */ 1056 dscr_size = udf_tagsize(dscr, sector_size); 1057 error = udf_process_vds_descriptor(ump, dscr); 1058 if (error) { 1059 free(dscr, M_UDFVOLD); 1060 break; 1061 } 1062 assert((dscr_size % sector_size) == 0); 1063 1064 len -= dscr_size; 1065 loc += dscr_size / sector_size; 1066 } 1067 1068 return error; 1069 } 1070 1071 1072 int 1073 udf_read_vds_space(struct udf_mount *ump) 1074 { 1075 /* struct udf_args *args = &ump->mount_args; */ 1076 struct anchor_vdp *anchor, *anchor2; 1077 size_t size; 1078 uint32_t main_loc, main_len; 1079 uint32_t reserve_loc, reserve_len; 1080 int error; 1081 1082 /* 1083 * read in VDS space provided by the anchors; if one descriptor read 1084 * fails, try the mirror sector. 1085 * 1086 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1087 * avoids the `compatibility features' of DirectCD that may confuse 1088 * stuff completely. 1089 */ 1090 1091 anchor = ump->anchors[0]; 1092 anchor2 = ump->anchors[1]; 1093 assert(anchor); 1094 1095 if (anchor2) { 1096 size = sizeof(struct extent_ad); 1097 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1098 anchor = anchor2; 1099 /* reserve is specified to be a literal copy of main */ 1100 } 1101 1102 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1103 main_len = udf_rw32(anchor->main_vds_ex.len); 1104 1105 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1106 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1107 1108 error = udf_read_vds_extent(ump, main_loc, main_len); 1109 if (error) { 1110 printf("UDF mount: reading in reserve VDS extent\n"); 1111 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1112 } 1113 1114 return error; 1115 } 1116 1117 /* --------------------------------------------------------------------- */ 1118 1119 /* 1120 * Read in the logical volume integrity sequence pointed to by our logical 1121 * volume descriptor. Its a sequence that can be extended using fields in the 1122 * integrity descriptor itself. On sequential media only one is found, on 1123 * rewritable media a sequence of descriptors can be found as a form of 1124 * history keeping and on non sequential write-once media the chain is vital 1125 * to allow more and more descriptors to be written. The last descriptor 1126 * written in an extent needs to claim space for a new extent. 1127 */ 1128 1129 static int 1130 udf_retrieve_lvint(struct udf_mount *ump) 1131 { 1132 union dscrptr *dscr; 1133 struct logvol_int_desc *lvint; 1134 struct udf_lvintq *trace; 1135 uint32_t lb_size, lbnum, len; 1136 int dscr_type, error, trace_len; 1137 1138 lb_size = udf_rw32(ump->logical_vol->lb_size); 1139 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1140 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1141 1142 /* clean trace */ 1143 memset(ump->lvint_trace, 0, 1144 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1145 1146 trace_len = 0; 1147 trace = ump->lvint_trace; 1148 trace->start = lbnum; 1149 trace->end = lbnum + len/lb_size; 1150 trace->pos = 0; 1151 trace->wpos = 0; 1152 1153 lvint = NULL; 1154 dscr = NULL; 1155 error = 0; 1156 while (len) { 1157 trace->pos = lbnum - trace->start; 1158 trace->wpos = trace->pos + 1; 1159 1160 /* read in our integrity descriptor */ 1161 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1162 if (!error) { 1163 if (dscr == NULL) { 1164 trace->wpos = trace->pos; 1165 break; /* empty terminates */ 1166 } 1167 dscr_type = udf_rw16(dscr->tag.id); 1168 if (dscr_type == TAGID_TERM) { 1169 trace->wpos = trace->pos; 1170 break; /* clean terminator */ 1171 } 1172 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1173 /* fatal... corrupt disc */ 1174 error = ENOENT; 1175 break; 1176 } 1177 if (lvint) 1178 free(lvint, M_UDFVOLD); 1179 lvint = &dscr->lvid; 1180 dscr = NULL; 1181 } /* else hope for the best... maybe the next is ok */ 1182 1183 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1184 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1185 1186 /* proceed sequential */ 1187 lbnum += 1; 1188 len -= lb_size; 1189 1190 /* are we linking to a new piece? */ 1191 if (dscr && lvint->next_extent.len) { 1192 len = udf_rw32(lvint->next_extent.len); 1193 lbnum = udf_rw32(lvint->next_extent.loc); 1194 1195 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1196 /* IEK! segment link full... */ 1197 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1198 error = EINVAL; 1199 } else { 1200 trace++; 1201 trace_len++; 1202 1203 trace->start = lbnum; 1204 trace->end = lbnum + len/lb_size; 1205 trace->pos = 0; 1206 trace->wpos = 0; 1207 } 1208 } 1209 } 1210 1211 /* clean up the mess, esp. when there is an error */ 1212 if (dscr) 1213 free(dscr, M_UDFVOLD); 1214 1215 if (error && lvint) { 1216 free(lvint, M_UDFVOLD); 1217 lvint = NULL; 1218 } 1219 1220 if (!lvint) 1221 error = ENOENT; 1222 1223 ump->logvol_integrity = lvint; 1224 return error; 1225 } 1226 1227 1228 static int 1229 udf_loose_lvint_history(struct udf_mount *ump) 1230 { 1231 union dscrptr **bufs, *dscr, *last_dscr; 1232 struct udf_lvintq *trace, *in_trace, *out_trace; 1233 struct logvol_int_desc *lvint; 1234 uint32_t in_ext, in_pos, in_len; 1235 uint32_t out_ext, out_wpos, out_len; 1236 uint32_t lb_size, packet_size, lb_num; 1237 uint32_t len, start; 1238 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1239 int losing; 1240 int error; 1241 1242 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1243 1244 lb_size = udf_rw32(ump->logical_vol->lb_size); 1245 packet_size = ump->data_track.packet_size; /* XXX data track */ 1246 1247 /* search smallest extent */ 1248 trace = &ump->lvint_trace[0]; 1249 minext = trace->end - trace->start; 1250 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1251 trace = &ump->lvint_trace[ext]; 1252 extlen = trace->end - trace->start; 1253 if (extlen == 0) 1254 break; 1255 minext = MIN(minext, extlen); 1256 } 1257 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1258 /* no sense wiping all */ 1259 if (losing == minext) 1260 losing--; 1261 1262 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1263 1264 /* get buffer for pieces */ 1265 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1266 1267 in_ext = 0; 1268 in_pos = losing; 1269 in_trace = &ump->lvint_trace[in_ext]; 1270 in_len = in_trace->end - in_trace->start; 1271 out_ext = 0; 1272 out_wpos = 0; 1273 out_trace = &ump->lvint_trace[out_ext]; 1274 out_len = out_trace->end - out_trace->start; 1275 1276 last_dscr = NULL; 1277 for(;;) { 1278 out_trace->pos = out_wpos; 1279 out_trace->wpos = out_trace->pos; 1280 if (in_pos >= in_len) { 1281 in_ext++; 1282 in_pos = 0; 1283 in_trace = &ump->lvint_trace[in_ext]; 1284 in_len = in_trace->end - in_trace->start; 1285 } 1286 if (out_wpos >= out_len) { 1287 out_ext++; 1288 out_wpos = 0; 1289 out_trace = &ump->lvint_trace[out_ext]; 1290 out_len = out_trace->end - out_trace->start; 1291 } 1292 /* copy overlap contents */ 1293 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1294 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1295 if (cpy_len == 0) 1296 break; 1297 1298 /* copy */ 1299 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1300 for (cnt = 0; cnt < cpy_len; cnt++) { 1301 /* read in our integrity descriptor */ 1302 lb_num = in_trace->start + in_pos + cnt; 1303 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1304 &dscr); 1305 if (error) { 1306 /* copy last one */ 1307 dscr = last_dscr; 1308 } 1309 bufs[cnt] = dscr; 1310 if (!error) { 1311 if (dscr == NULL) { 1312 out_trace->pos = out_wpos + cnt; 1313 out_trace->wpos = out_trace->pos; 1314 break; /* empty terminates */ 1315 } 1316 dscr_type = udf_rw16(dscr->tag.id); 1317 if (dscr_type == TAGID_TERM) { 1318 out_trace->pos = out_wpos + cnt; 1319 out_trace->wpos = out_trace->pos; 1320 break; /* clean terminator */ 1321 } 1322 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1323 panic( "UDF integrity sequence " 1324 "corrupted while mounted!\n"); 1325 } 1326 last_dscr = dscr; 1327 } 1328 } 1329 1330 /* patch up if first entry was on error */ 1331 if (bufs[0] == NULL) { 1332 for (cnt = 0; cnt < cpy_len; cnt++) 1333 if (bufs[cnt] != NULL) 1334 break; 1335 last_dscr = bufs[cnt]; 1336 for (; cnt > 0; cnt--) { 1337 bufs[cnt] = last_dscr; 1338 } 1339 } 1340 1341 /* glue + write out */ 1342 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1343 for (cnt = 0; cnt < cpy_len; cnt++) { 1344 lb_num = out_trace->start + out_wpos + cnt; 1345 lvint = &bufs[cnt]->lvid; 1346 1347 /* set continuation */ 1348 len = 0; 1349 start = 0; 1350 if (out_wpos + cnt == out_len) { 1351 /* get continuation */ 1352 trace = &ump->lvint_trace[out_ext+1]; 1353 len = trace->end - trace->start; 1354 start = trace->start; 1355 } 1356 lvint->next_extent.len = udf_rw32(len); 1357 lvint->next_extent.loc = udf_rw32(start); 1358 1359 lb_num = trace->start + trace->wpos; 1360 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1361 bufs[cnt], lb_num, lb_num); 1362 DPRINTFIF(VOLUMES, error, 1363 ("error writing lvint lb_num\n")); 1364 } 1365 1366 /* free non repeating descriptors */ 1367 last_dscr = NULL; 1368 for (cnt = 0; cnt < cpy_len; cnt++) { 1369 if (bufs[cnt] != last_dscr) 1370 free(bufs[cnt], M_UDFVOLD); 1371 last_dscr = bufs[cnt]; 1372 } 1373 1374 /* advance */ 1375 in_pos += cpy_len; 1376 out_wpos += cpy_len; 1377 } 1378 1379 free(bufs, M_TEMP); 1380 1381 return 0; 1382 } 1383 1384 1385 static int 1386 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1387 { 1388 struct udf_lvintq *trace; 1389 struct timeval now_v; 1390 struct timespec now_s; 1391 uint32_t sector; 1392 int logvol_integrity; 1393 int space, error; 1394 1395 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1396 1397 again: 1398 /* get free space in last chunk */ 1399 trace = ump->lvint_trace; 1400 while (trace->wpos > (trace->end - trace->start)) { 1401 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1402 "wpos = %d\n", trace->start, trace->end, 1403 trace->pos, trace->wpos)); 1404 trace++; 1405 } 1406 1407 /* check if there is space to append */ 1408 space = (trace->end - trace->start) - trace->wpos; 1409 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1410 "space = %d\n", trace->start, trace->end, trace->pos, 1411 trace->wpos, space)); 1412 1413 /* get state */ 1414 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1415 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1416 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1417 /* don't allow this logvol to be opened */ 1418 /* TODO extent LVINT space if possible */ 1419 return EROFS; 1420 } 1421 } 1422 1423 if (space < 1) { 1424 if (lvflag & UDF_APPENDONLY_LVINT) 1425 return EROFS; 1426 /* loose history by re-writing extents */ 1427 error = udf_loose_lvint_history(ump); 1428 if (error) 1429 return error; 1430 goto again; 1431 } 1432 1433 /* update our integrity descriptor to identify us and timestamp it */ 1434 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1435 microtime(&now_v); 1436 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1437 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1438 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1439 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1440 1441 /* writeout integrity descriptor */ 1442 sector = trace->start + trace->wpos; 1443 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1444 (union dscrptr *) ump->logvol_integrity, 1445 sector, sector); 1446 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1447 if (error) 1448 return error; 1449 1450 /* advance write position */ 1451 trace->wpos++; space--; 1452 if (space >= 1) { 1453 /* append terminator */ 1454 sector = trace->start + trace->wpos; 1455 error = udf_write_terminator(ump, sector); 1456 1457 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1458 } 1459 1460 space = (trace->end - trace->start) - trace->wpos; 1461 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1462 "space = %d\n", trace->start, trace->end, trace->pos, 1463 trace->wpos, space)); 1464 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1465 "successfull\n")); 1466 1467 return error; 1468 } 1469 1470 /* --------------------------------------------------------------------- */ 1471 1472 static int 1473 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1474 { 1475 union dscrptr *dscr; 1476 /* struct udf_args *args = &ump->mount_args; */ 1477 struct part_desc *partd; 1478 struct part_hdr_desc *parthdr; 1479 struct udf_bitmap *bitmap; 1480 uint32_t phys_part; 1481 uint32_t lb_num, len; 1482 int error, dscr_type; 1483 1484 /* unallocated space map */ 1485 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1486 partd = ump->partitions[phys_part]; 1487 if (partd == NULL) 1488 continue; 1489 parthdr = &partd->_impl_use.part_hdr; 1490 1491 lb_num = udf_rw32(partd->start_loc); 1492 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1493 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1494 if (len == 0) 1495 continue; 1496 1497 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1498 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1499 if (!error && dscr) { 1500 /* analyse */ 1501 dscr_type = udf_rw16(dscr->tag.id); 1502 if (dscr_type == TAGID_SPACE_BITMAP) { 1503 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1504 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1505 1506 /* fill in ump->part_unalloc_bits */ 1507 bitmap = &ump->part_unalloc_bits[phys_part]; 1508 bitmap->blob = (uint8_t *) dscr; 1509 bitmap->bits = dscr->sbd.data; 1510 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1511 bitmap->pages = NULL; /* TODO */ 1512 bitmap->data_pos = 0; 1513 bitmap->metadata_pos = 0; 1514 } else { 1515 free(dscr, M_UDFVOLD); 1516 1517 printf( "UDF mount: error reading unallocated " 1518 "space bitmap\n"); 1519 return EROFS; 1520 } 1521 } else { 1522 /* blank not allowed */ 1523 printf("UDF mount: blank unallocated space bitmap\n"); 1524 return EROFS; 1525 } 1526 } 1527 1528 /* unallocated space table (not supported) */ 1529 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1530 partd = ump->partitions[phys_part]; 1531 if (partd == NULL) 1532 continue; 1533 parthdr = &partd->_impl_use.part_hdr; 1534 1535 len = udf_rw32(parthdr->unalloc_space_table.len); 1536 if (len) { 1537 printf("UDF mount: space tables not supported\n"); 1538 return EROFS; 1539 } 1540 } 1541 1542 /* freed space map */ 1543 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1544 partd = ump->partitions[phys_part]; 1545 if (partd == NULL) 1546 continue; 1547 parthdr = &partd->_impl_use.part_hdr; 1548 1549 /* freed space map */ 1550 lb_num = udf_rw32(partd->start_loc); 1551 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1552 len = udf_rw32(parthdr->freed_space_bitmap.len); 1553 if (len == 0) 1554 continue; 1555 1556 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1557 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1558 if (!error && dscr) { 1559 /* analyse */ 1560 dscr_type = udf_rw16(dscr->tag.id); 1561 if (dscr_type == TAGID_SPACE_BITMAP) { 1562 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1563 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1564 1565 /* fill in ump->part_freed_bits */ 1566 bitmap = &ump->part_unalloc_bits[phys_part]; 1567 bitmap->blob = (uint8_t *) dscr; 1568 bitmap->bits = dscr->sbd.data; 1569 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1570 bitmap->pages = NULL; /* TODO */ 1571 bitmap->data_pos = 0; 1572 bitmap->metadata_pos = 0; 1573 } else { 1574 free(dscr, M_UDFVOLD); 1575 1576 printf( "UDF mount: error reading freed " 1577 "space bitmap\n"); 1578 return EROFS; 1579 } 1580 } else { 1581 /* blank not allowed */ 1582 printf("UDF mount: blank freed space bitmap\n"); 1583 return EROFS; 1584 } 1585 } 1586 1587 /* freed space table (not supported) */ 1588 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1589 partd = ump->partitions[phys_part]; 1590 if (partd == NULL) 1591 continue; 1592 parthdr = &partd->_impl_use.part_hdr; 1593 1594 len = udf_rw32(parthdr->freed_space_table.len); 1595 if (len) { 1596 printf("UDF mount: space tables not supported\n"); 1597 return EROFS; 1598 } 1599 } 1600 1601 return 0; 1602 } 1603 1604 1605 /* TODO implement async writeout */ 1606 int 1607 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1608 { 1609 union dscrptr *dscr; 1610 /* struct udf_args *args = &ump->mount_args; */ 1611 struct part_desc *partd; 1612 struct part_hdr_desc *parthdr; 1613 uint32_t phys_part; 1614 uint32_t lb_num, len, ptov; 1615 int error_all, error; 1616 1617 error_all = 0; 1618 /* unallocated space map */ 1619 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1620 partd = ump->partitions[phys_part]; 1621 if (partd == NULL) 1622 continue; 1623 parthdr = &partd->_impl_use.part_hdr; 1624 1625 ptov = udf_rw32(partd->start_loc); 1626 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1627 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1628 if (len == 0) 1629 continue; 1630 1631 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1632 lb_num + ptov)); 1633 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1634 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1635 (union dscrptr *) dscr, 1636 ptov + lb_num, lb_num); 1637 if (error) { 1638 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1639 error_all = error; 1640 } 1641 } 1642 1643 /* freed space map */ 1644 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1645 partd = ump->partitions[phys_part]; 1646 if (partd == NULL) 1647 continue; 1648 parthdr = &partd->_impl_use.part_hdr; 1649 1650 /* freed space map */ 1651 ptov = udf_rw32(partd->start_loc); 1652 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1653 len = udf_rw32(parthdr->freed_space_bitmap.len); 1654 if (len == 0) 1655 continue; 1656 1657 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1658 lb_num + ptov)); 1659 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1660 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1661 (union dscrptr *) dscr, 1662 ptov + lb_num, lb_num); 1663 if (error) { 1664 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1665 error_all = error; 1666 } 1667 } 1668 1669 return error_all; 1670 } 1671 1672 1673 static int 1674 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1675 { 1676 struct udf_node *bitmap_node; 1677 union dscrptr *dscr; 1678 struct udf_bitmap *bitmap; 1679 uint64_t inflen; 1680 int error, dscr_type; 1681 1682 bitmap_node = ump->metadatabitmap_node; 1683 1684 /* only read in when metadata bitmap node is read in */ 1685 if (bitmap_node == NULL) 1686 return 0; 1687 1688 if (bitmap_node->fe) { 1689 inflen = udf_rw64(bitmap_node->fe->inf_len); 1690 } else { 1691 KASSERT(bitmap_node->efe); 1692 inflen = udf_rw64(bitmap_node->efe->inf_len); 1693 } 1694 1695 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1696 "%"PRIu64" bytes\n", inflen)); 1697 1698 /* allocate space for bitmap */ 1699 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1700 if (!dscr) 1701 return ENOMEM; 1702 1703 /* set vnode type to regular file or we can't read from it! */ 1704 bitmap_node->vnode->v_type = VREG; 1705 1706 /* read in complete metadata bitmap file */ 1707 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1708 dscr, 1709 inflen, 0, 1710 UIO_SYSSPACE, 1711 IO_SYNC | IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1712 NULL, NULL); 1713 if (error) { 1714 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1715 goto errorout; 1716 } 1717 1718 /* analyse */ 1719 dscr_type = udf_rw16(dscr->tag.id); 1720 if (dscr_type == TAGID_SPACE_BITMAP) { 1721 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1722 ump->metadata_unalloc_dscr = &dscr->sbd; 1723 1724 /* fill in bitmap bits */ 1725 bitmap = &ump->metadata_unalloc_bits; 1726 bitmap->blob = (uint8_t *) dscr; 1727 bitmap->bits = dscr->sbd.data; 1728 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1729 bitmap->pages = NULL; /* TODO */ 1730 bitmap->data_pos = 0; 1731 bitmap->metadata_pos = 0; 1732 } else { 1733 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1734 goto errorout; 1735 } 1736 1737 return 0; 1738 1739 errorout: 1740 free(dscr, M_UDFVOLD); 1741 printf( "UDF mount: error reading unallocated " 1742 "space bitmap for metadata partition\n"); 1743 return EROFS; 1744 } 1745 1746 1747 int 1748 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1749 { 1750 struct udf_node *bitmap_node; 1751 union dscrptr *dscr; 1752 uint64_t inflen, new_inflen; 1753 int dummy, error; 1754 1755 bitmap_node = ump->metadatabitmap_node; 1756 1757 /* only write out when metadata bitmap node is known */ 1758 if (bitmap_node == NULL) 1759 return 0; 1760 1761 if (bitmap_node->fe) { 1762 inflen = udf_rw64(bitmap_node->fe->inf_len); 1763 } else { 1764 KASSERT(bitmap_node->efe); 1765 inflen = udf_rw64(bitmap_node->efe->inf_len); 1766 } 1767 1768 /* reduce length to zero */ 1769 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1770 new_inflen = udf_tagsize(dscr, 1); 1771 1772 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap from " 1773 "%"PRIu64" to %"PRIu64" bytes\n", inflen, new_inflen)); 1774 1775 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1776 if (error) 1777 printf("Error resizing metadata space bitmap\n"); 1778 1779 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1780 dscr, 1781 new_inflen, 0, 1782 UIO_SYSSPACE, 1783 IO_NODELOCKED | IO_ALTSEMANTICS, FSCRED, 1784 NULL, NULL); 1785 1786 bitmap_node->i_flags |= IN_MODIFIED; 1787 vflushbuf(bitmap_node->vnode, 1 /* sync */); 1788 1789 error = VOP_FSYNC(bitmap_node->vnode, 1790 FSCRED, FSYNC_WAIT, 0, 0); 1791 1792 if (error) 1793 printf( "Error writing out metadata partition unalloced " 1794 "space bitmap!\n"); 1795 1796 return error; 1797 } 1798 1799 1800 /* --------------------------------------------------------------------- */ 1801 1802 /* 1803 * Checks if ump's vds information is correct and complete 1804 */ 1805 1806 int 1807 udf_process_vds(struct udf_mount *ump) { 1808 union udf_pmap *mapping; 1809 /* struct udf_args *args = &ump->mount_args; */ 1810 struct logvol_int_desc *lvint; 1811 struct udf_logvol_info *lvinfo; 1812 struct part_desc *part; 1813 uint32_t n_pm, mt_l; 1814 uint8_t *pmap_pos; 1815 char *domain_name, *map_name; 1816 const char *check_name; 1817 char bits[128]; 1818 int pmap_stype, pmap_size; 1819 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1820 int n_phys, n_virt, n_spar, n_meta; 1821 int len, error; 1822 1823 if (ump == NULL) 1824 return ENOENT; 1825 1826 /* we need at least an anchor (trivial, but for safety) */ 1827 if (ump->anchors[0] == NULL) 1828 return EINVAL; 1829 1830 /* we need at least one primary and one logical volume descriptor */ 1831 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1832 return EINVAL; 1833 1834 /* we need at least one partition descriptor */ 1835 if (ump->partitions[0] == NULL) 1836 return EINVAL; 1837 1838 /* check logical volume sector size verses device sector size */ 1839 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1840 printf("UDF mount: format violation, lb_size != sector size\n"); 1841 return EINVAL; 1842 } 1843 1844 /* check domain name */ 1845 domain_name = ump->logical_vol->domain_id.id; 1846 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1847 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1848 return EINVAL; 1849 } 1850 1851 /* retrieve logical volume integrity sequence */ 1852 error = udf_retrieve_lvint(ump); 1853 1854 /* 1855 * We need at least one logvol integrity descriptor recorded. Note 1856 * that its OK to have an open logical volume integrity here. The VAT 1857 * will close/update the integrity. 1858 */ 1859 if (ump->logvol_integrity == NULL) 1860 return EINVAL; 1861 1862 /* process derived structures */ 1863 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1864 lvint = ump->logvol_integrity; 1865 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1866 ump->logvol_info = lvinfo; 1867 1868 /* TODO check udf versions? */ 1869 1870 /* 1871 * check logvol mappings: effective virt->log partmap translation 1872 * check and recording of the mapping results. Saves expensive 1873 * strncmp() in tight places. 1874 */ 1875 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1876 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1877 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1878 pmap_pos = ump->logical_vol->maps; 1879 1880 if (n_pm > UDF_PMAPS) { 1881 printf("UDF mount: too many mappings\n"); 1882 return EINVAL; 1883 } 1884 1885 /* count types and set partition numbers */ 1886 ump->data_part = ump->node_part = ump->fids_part = 0; 1887 n_phys = n_virt = n_spar = n_meta = 0; 1888 for (log_part = 0; log_part < n_pm; log_part++) { 1889 mapping = (union udf_pmap *) pmap_pos; 1890 pmap_stype = pmap_pos[0]; 1891 pmap_size = pmap_pos[1]; 1892 switch (pmap_stype) { 1893 case 1: /* physical mapping */ 1894 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1895 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1896 pmap_type = UDF_VTOP_TYPE_PHYS; 1897 n_phys++; 1898 ump->data_part = log_part; 1899 ump->node_part = log_part; 1900 ump->fids_part = log_part; 1901 break; 1902 case 2: /* virtual/sparable/meta mapping */ 1903 map_name = mapping->pm2.part_id.id; 1904 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1905 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1906 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1907 len = UDF_REGID_ID_SIZE; 1908 1909 check_name = "*UDF Virtual Partition"; 1910 if (strncmp(map_name, check_name, len) == 0) { 1911 pmap_type = UDF_VTOP_TYPE_VIRT; 1912 n_virt++; 1913 ump->node_part = log_part; 1914 break; 1915 } 1916 check_name = "*UDF Sparable Partition"; 1917 if (strncmp(map_name, check_name, len) == 0) { 1918 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1919 n_spar++; 1920 ump->data_part = log_part; 1921 ump->node_part = log_part; 1922 ump->fids_part = log_part; 1923 break; 1924 } 1925 check_name = "*UDF Metadata Partition"; 1926 if (strncmp(map_name, check_name, len) == 0) { 1927 pmap_type = UDF_VTOP_TYPE_META; 1928 n_meta++; 1929 ump->node_part = log_part; 1930 ump->fids_part = log_part; 1931 break; 1932 } 1933 break; 1934 default: 1935 return EINVAL; 1936 } 1937 1938 /* 1939 * BUGALERT: some rogue implementations use random physical 1940 * partion numbers to break other implementations so lookup 1941 * the number. 1942 */ 1943 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1944 part = ump->partitions[phys_part]; 1945 if (part == NULL) 1946 continue; 1947 if (udf_rw16(part->part_num) == raw_phys_part) 1948 break; 1949 } 1950 1951 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1952 raw_phys_part, phys_part, pmap_type)); 1953 1954 if (phys_part == UDF_PARTITIONS) 1955 return EINVAL; 1956 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1957 return EINVAL; 1958 1959 ump->vtop [log_part] = phys_part; 1960 ump->vtop_tp[log_part] = pmap_type; 1961 1962 pmap_pos += pmap_size; 1963 } 1964 /* not winning the beauty contest */ 1965 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1966 1967 /* test some basic UDF assertions/requirements */ 1968 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1969 return EINVAL; 1970 1971 if (n_virt) { 1972 if ((n_phys == 0) || n_spar || n_meta) 1973 return EINVAL; 1974 } 1975 if (n_spar + n_phys == 0) 1976 return EINVAL; 1977 1978 /* select allocation type for each logical partition */ 1979 for (log_part = 0; log_part < n_pm; log_part++) { 1980 maps_on = ump->vtop[log_part]; 1981 switch (ump->vtop_tp[log_part]) { 1982 case UDF_VTOP_TYPE_PHYS : 1983 assert(maps_on == log_part); 1984 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1985 break; 1986 case UDF_VTOP_TYPE_VIRT : 1987 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 1988 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 1989 break; 1990 case UDF_VTOP_TYPE_SPARABLE : 1991 assert(maps_on == log_part); 1992 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 1993 break; 1994 case UDF_VTOP_TYPE_META : 1995 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 1996 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1997 /* special case for UDF 2.60 */ 1998 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 1999 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 2000 } 2001 break; 2002 default: 2003 panic("bad alloction type in udf's ump->vtop\n"); 2004 } 2005 } 2006 2007 /* determine logical volume open/closure actions */ 2008 if (n_virt) { 2009 ump->lvopen = 0; 2010 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 2011 ump->lvopen |= UDF_OPEN_SESSION ; 2012 ump->lvclose = UDF_WRITE_VAT; 2013 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 2014 ump->lvclose |= UDF_CLOSE_SESSION; 2015 } else { 2016 /* `normal' rewritable or non sequential media */ 2017 ump->lvopen = UDF_WRITE_LVINT; 2018 ump->lvclose = UDF_WRITE_LVINT; 2019 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 2020 ump->lvopen |= UDF_APPENDONLY_LVINT; 2021 } 2022 2023 /* 2024 * Determine sheduler error behaviour. For virtual partions, update 2025 * the trackinfo; for sparable partitions replace a whole block on the 2026 * sparable table. Allways requeue. 2027 */ 2028 ump->lvreadwrite = 0; 2029 if (n_virt) 2030 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 2031 if (n_spar) 2032 ump->lvreadwrite = UDF_REMAP_BLOCK; 2033 2034 /* 2035 * Select our sheduler 2036 */ 2037 ump->strategy = &udf_strat_rmw; 2038 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 2039 ump->strategy = &udf_strat_sequential; 2040 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 2041 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 2042 ump->strategy = &udf_strat_direct; 2043 if (n_spar) 2044 ump->strategy = &udf_strat_rmw; 2045 2046 #if 0 2047 /* read-only access won't benefit from the other shedulers */ 2048 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 2049 ump->strategy = &udf_strat_direct; 2050 #endif 2051 2052 /* print results */ 2053 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2054 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2055 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2056 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2057 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2058 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2059 2060 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 2061 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2062 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 2063 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2064 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 2065 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2066 2067 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2068 (ump->strategy == &udf_strat_direct) ? "Direct" : 2069 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2070 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2071 2072 /* signal its OK for now */ 2073 return 0; 2074 } 2075 2076 /* --------------------------------------------------------------------- */ 2077 2078 /* 2079 * Update logical volume name in all structures that keep a record of it. We 2080 * use memmove since each of them might be specified as a source. 2081 * 2082 * Note that it doesn't update the VAT structure! 2083 */ 2084 2085 static void 2086 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2087 { 2088 struct logvol_desc *lvd = NULL; 2089 struct fileset_desc *fsd = NULL; 2090 struct udf_lv_info *lvi = NULL; 2091 2092 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2093 lvd = ump->logical_vol; 2094 fsd = ump->fileset_desc; 2095 if (ump->implementation) 2096 lvi = &ump->implementation->_impl_use.lv_info; 2097 2098 /* logvol's id might be specified as origional so use memmove here */ 2099 memmove(lvd->logvol_id, logvol_id, 128); 2100 if (fsd) 2101 memmove(fsd->logvol_id, logvol_id, 128); 2102 if (lvi) 2103 memmove(lvi->logvol_id, logvol_id, 128); 2104 } 2105 2106 /* --------------------------------------------------------------------- */ 2107 2108 void 2109 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2110 uint32_t sector) 2111 { 2112 assert(ump->logical_vol); 2113 2114 tag->id = udf_rw16(tagid); 2115 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2116 tag->cksum = 0; 2117 tag->reserved = 0; 2118 tag->serial_num = ump->logical_vol->tag.serial_num; 2119 tag->tag_loc = udf_rw32(sector); 2120 } 2121 2122 2123 uint64_t 2124 udf_advance_uniqueid(struct udf_mount *ump) 2125 { 2126 uint64_t unique_id; 2127 2128 mutex_enter(&ump->logvol_mutex); 2129 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2130 if (unique_id < 0x10) 2131 unique_id = 0x10; 2132 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2133 mutex_exit(&ump->logvol_mutex); 2134 2135 return unique_id; 2136 } 2137 2138 2139 static void 2140 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2141 { 2142 struct udf_mount *ump = udf_node->ump; 2143 uint32_t num_dirs, num_files; 2144 int udf_file_type; 2145 2146 /* get file type */ 2147 if (udf_node->fe) { 2148 udf_file_type = udf_node->fe->icbtag.file_type; 2149 } else { 2150 udf_file_type = udf_node->efe->icbtag.file_type; 2151 } 2152 2153 /* adjust file count */ 2154 mutex_enter(&ump->allocate_mutex); 2155 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2156 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2157 ump->logvol_info->num_directories = 2158 udf_rw32((num_dirs + sign)); 2159 } else { 2160 num_files = udf_rw32(ump->logvol_info->num_files); 2161 ump->logvol_info->num_files = 2162 udf_rw32((num_files + sign)); 2163 } 2164 mutex_exit(&ump->allocate_mutex); 2165 } 2166 2167 2168 void 2169 udf_osta_charset(struct charspec *charspec) 2170 { 2171 bzero(charspec, sizeof(struct charspec)); 2172 charspec->type = 0; 2173 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2174 } 2175 2176 2177 /* first call udf_set_regid and then the suffix */ 2178 void 2179 udf_set_regid(struct regid *regid, char const *name) 2180 { 2181 bzero(regid, sizeof(struct regid)); 2182 regid->flags = 0; /* not dirty and not protected */ 2183 strcpy((char *) regid->id, name); 2184 } 2185 2186 2187 void 2188 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2189 { 2190 uint16_t *ver; 2191 2192 ver = (uint16_t *) regid->id_suffix; 2193 *ver = ump->logvol_info->min_udf_readver; 2194 } 2195 2196 2197 void 2198 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2199 { 2200 uint16_t *ver; 2201 2202 ver = (uint16_t *) regid->id_suffix; 2203 *ver = ump->logvol_info->min_udf_readver; 2204 2205 regid->id_suffix[2] = 4; /* unix */ 2206 regid->id_suffix[3] = 8; /* NetBSD */ 2207 } 2208 2209 2210 void 2211 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2212 { 2213 regid->id_suffix[0] = 4; /* unix */ 2214 regid->id_suffix[1] = 8; /* NetBSD */ 2215 } 2216 2217 2218 void 2219 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2220 { 2221 regid->id_suffix[0] = APP_VERSION_MAIN; 2222 regid->id_suffix[1] = APP_VERSION_SUB; 2223 } 2224 2225 static int 2226 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2227 struct long_ad *parent, uint64_t unique_id) 2228 { 2229 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2230 int fidsize = 40; 2231 2232 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2233 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2234 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2235 fid->icb = *parent; 2236 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2237 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2238 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2239 2240 return fidsize; 2241 } 2242 2243 /* --------------------------------------------------------------------- */ 2244 2245 /* 2246 * Extended attribute support. UDF knows of 3 places for extended attributes: 2247 * 2248 * (a) inside the file's (e)fe in the length of the extended attribute area 2249 * before the allocation descriptors/filedata 2250 * 2251 * (b) in a file referenced by (e)fe->ext_attr_icb and 2252 * 2253 * (c) in the e(fe)'s associated stream directory that can hold various 2254 * sub-files. In the stream directory a few fixed named subfiles are reserved 2255 * for NT/Unix ACL's and OS/2 attributes. 2256 * 2257 * NOTE: Extended attributes are read randomly but allways written 2258 * *atomicaly*. For ACL's this interface is propably different but not known 2259 * to me yet. 2260 * 2261 * Order of extended attributes in a space : 2262 * ECMA 167 EAs 2263 * Non block aligned Implementation Use EAs 2264 * Block aligned Implementation Use EAs 2265 * Application Use EAs 2266 */ 2267 2268 static int 2269 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2270 { 2271 uint16_t *spos; 2272 2273 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2274 /* checksum valid? */ 2275 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2276 spos = (uint16_t *) implext->data; 2277 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2278 return EINVAL; 2279 } 2280 return 0; 2281 } 2282 2283 static void 2284 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2285 { 2286 uint16_t *spos; 2287 2288 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2289 /* set checksum */ 2290 spos = (uint16_t *) implext->data; 2291 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2292 } 2293 } 2294 2295 2296 int 2297 udf_extattr_search_intern(struct udf_node *node, 2298 uint32_t sattr, char const *sattrname, 2299 uint32_t *offsetp, uint32_t *lengthp) 2300 { 2301 struct extattrhdr_desc *eahdr; 2302 struct extattr_entry *attrhdr; 2303 struct impl_extattr_entry *implext; 2304 uint32_t offset, a_l, sector_size; 2305 int32_t l_ea; 2306 uint8_t *pos; 2307 int error; 2308 2309 /* get mountpoint */ 2310 sector_size = node->ump->discinfo.sector_size; 2311 2312 /* get information from fe/efe */ 2313 if (node->fe) { 2314 l_ea = udf_rw32(node->fe->l_ea); 2315 eahdr = (struct extattrhdr_desc *) node->fe->data; 2316 } else { 2317 assert(node->efe); 2318 l_ea = udf_rw32(node->efe->l_ea); 2319 eahdr = (struct extattrhdr_desc *) node->efe->data; 2320 } 2321 2322 /* something recorded here? */ 2323 if (l_ea == 0) 2324 return ENOENT; 2325 2326 /* check extended attribute tag; what to do if it fails? */ 2327 error = udf_check_tag(eahdr); 2328 if (error) 2329 return EINVAL; 2330 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2331 return EINVAL; 2332 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2333 if (error) 2334 return EINVAL; 2335 2336 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2337 2338 /* looking for Ecma-167 attributes? */ 2339 offset = sizeof(struct extattrhdr_desc); 2340 2341 /* looking for either implemenation use or application use */ 2342 if (sattr == 2048) { /* [4/48.10.8] */ 2343 offset = udf_rw32(eahdr->impl_attr_loc); 2344 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2345 return ENOENT; 2346 } 2347 if (sattr == 65536) { /* [4/48.10.9] */ 2348 offset = udf_rw32(eahdr->appl_attr_loc); 2349 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2350 return ENOENT; 2351 } 2352 2353 /* paranoia check offset and l_ea */ 2354 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2355 return EINVAL; 2356 2357 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2358 2359 /* find our extended attribute */ 2360 l_ea -= offset; 2361 pos = (uint8_t *) eahdr + offset; 2362 2363 while (l_ea >= sizeof(struct extattr_entry)) { 2364 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2365 attrhdr = (struct extattr_entry *) pos; 2366 implext = (struct impl_extattr_entry *) pos; 2367 2368 /* get complete attribute length and check for roque values */ 2369 a_l = udf_rw32(attrhdr->a_l); 2370 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2371 udf_rw32(attrhdr->type), 2372 attrhdr->subtype, a_l, l_ea)); 2373 if ((a_l == 0) || (a_l > l_ea)) 2374 return EINVAL; 2375 2376 if (attrhdr->type != sattr) 2377 goto next_attribute; 2378 2379 /* we might have found it! */ 2380 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2381 *offsetp = offset; 2382 *lengthp = a_l; 2383 return 0; /* success */ 2384 } 2385 2386 /* 2387 * Implementation use and application use extended attributes 2388 * have a name to identify. They share the same structure only 2389 * UDF implementation use extended attributes have a checksum 2390 * we need to check 2391 */ 2392 2393 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2394 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2395 /* we have found our appl/implementation attribute */ 2396 *offsetp = offset; 2397 *lengthp = a_l; 2398 return 0; /* success */ 2399 } 2400 2401 next_attribute: 2402 /* next attribute */ 2403 pos += a_l; 2404 l_ea -= a_l; 2405 offset += a_l; 2406 } 2407 /* not found */ 2408 return ENOENT; 2409 } 2410 2411 2412 static void 2413 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2414 struct extattr_entry *extattr) 2415 { 2416 struct file_entry *fe; 2417 struct extfile_entry *efe; 2418 struct extattrhdr_desc *extattrhdr; 2419 struct impl_extattr_entry *implext; 2420 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2421 uint32_t *l_eap, l_ad; 2422 uint16_t *spos; 2423 uint8_t *bpos, *data; 2424 2425 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2426 fe = &dscr->fe; 2427 data = fe->data; 2428 l_eap = &fe->l_ea; 2429 l_ad = udf_rw32(fe->l_ad); 2430 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2431 efe = &dscr->efe; 2432 data = efe->data; 2433 l_eap = &efe->l_ea; 2434 l_ad = udf_rw32(efe->l_ad); 2435 } else { 2436 panic("Bad tag passed to udf_extattr_insert_internal"); 2437 } 2438 2439 /* can't append already written to file descriptors yet */ 2440 assert(l_ad == 0); 2441 2442 /* should have a header! */ 2443 extattrhdr = (struct extattrhdr_desc *) data; 2444 l_ea = udf_rw32(*l_eap); 2445 if (l_ea == 0) { 2446 /* create empty extended attribute header */ 2447 exthdr_len = sizeof(struct extattrhdr_desc); 2448 2449 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2450 /* loc */ 0); 2451 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2452 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2453 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2454 2455 /* record extended attribute header length */ 2456 l_ea = exthdr_len; 2457 *l_eap = udf_rw32(l_ea); 2458 } 2459 2460 /* extract locations */ 2461 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2462 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2463 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2464 impl_attr_loc = l_ea; 2465 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2466 appl_attr_loc = l_ea; 2467 2468 /* Ecma 167 EAs */ 2469 if (udf_rw32(extattr->type) < 2048) { 2470 assert(impl_attr_loc == l_ea); 2471 assert(appl_attr_loc == l_ea); 2472 } 2473 2474 /* implementation use extended attributes */ 2475 if (udf_rw32(extattr->type) == 2048) { 2476 assert(appl_attr_loc == l_ea); 2477 2478 /* calculate and write extended attribute header checksum */ 2479 implext = (struct impl_extattr_entry *) extattr; 2480 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2481 spos = (uint16_t *) implext->data; 2482 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2483 } 2484 2485 /* application use extended attributes */ 2486 assert(udf_rw32(extattr->type) != 65536); 2487 assert(appl_attr_loc == l_ea); 2488 2489 /* append the attribute at the end of the current space */ 2490 bpos = data + udf_rw32(*l_eap); 2491 a_l = udf_rw32(extattr->a_l); 2492 2493 /* update impl. attribute locations */ 2494 if (udf_rw32(extattr->type) < 2048) { 2495 impl_attr_loc = l_ea + a_l; 2496 appl_attr_loc = l_ea + a_l; 2497 } 2498 if (udf_rw32(extattr->type) == 2048) { 2499 appl_attr_loc = l_ea + a_l; 2500 } 2501 2502 /* copy and advance */ 2503 memcpy(bpos, extattr, a_l); 2504 l_ea += a_l; 2505 *l_eap = udf_rw32(l_ea); 2506 2507 /* do the `dance` again backwards */ 2508 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2509 if (impl_attr_loc == l_ea) 2510 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2511 if (appl_attr_loc == l_ea) 2512 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2513 } 2514 2515 /* store offsets */ 2516 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2517 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2518 } 2519 2520 2521 /* --------------------------------------------------------------------- */ 2522 2523 static int 2524 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2525 { 2526 struct udf_mount *ump; 2527 struct udf_logvol_info *lvinfo; 2528 struct impl_extattr_entry *implext; 2529 struct vatlvext_extattr_entry lvext; 2530 const char *extstr = "*UDF VAT LVExtension"; 2531 uint64_t vat_uniqueid; 2532 uint32_t offset, a_l; 2533 uint8_t *ea_start, *lvextpos; 2534 int error; 2535 2536 /* get mountpoint and lvinfo */ 2537 ump = vat_node->ump; 2538 lvinfo = ump->logvol_info; 2539 2540 /* get information from fe/efe */ 2541 if (vat_node->fe) { 2542 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2543 ea_start = vat_node->fe->data; 2544 } else { 2545 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2546 ea_start = vat_node->efe->data; 2547 } 2548 2549 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2550 if (error) 2551 return error; 2552 2553 implext = (struct impl_extattr_entry *) (ea_start + offset); 2554 error = udf_impl_extattr_check(implext); 2555 if (error) 2556 return error; 2557 2558 /* paranoia */ 2559 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2560 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2561 return EINVAL; 2562 } 2563 2564 /* 2565 * we have found our "VAT LVExtension attribute. BUT due to a 2566 * bug in the specification it might not be word aligned so 2567 * copy first to avoid panics on some machines (!!) 2568 */ 2569 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2570 lvextpos = implext->data + udf_rw32(implext->iu_l); 2571 memcpy(&lvext, lvextpos, sizeof(lvext)); 2572 2573 /* check if it was updated the last time */ 2574 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2575 lvinfo->num_files = lvext.num_files; 2576 lvinfo->num_directories = lvext.num_directories; 2577 udf_update_logvolname(ump, lvext.logvol_id); 2578 } else { 2579 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2580 /* replace VAT LVExt by free space EA */ 2581 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2582 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2583 udf_calc_impl_extattr_checksum(implext); 2584 } 2585 2586 return 0; 2587 } 2588 2589 2590 static int 2591 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2592 { 2593 struct udf_mount *ump; 2594 struct udf_logvol_info *lvinfo; 2595 struct impl_extattr_entry *implext; 2596 struct vatlvext_extattr_entry lvext; 2597 const char *extstr = "*UDF VAT LVExtension"; 2598 uint64_t vat_uniqueid; 2599 uint32_t offset, a_l; 2600 uint8_t *ea_start, *lvextpos; 2601 int error; 2602 2603 /* get mountpoint and lvinfo */ 2604 ump = vat_node->ump; 2605 lvinfo = ump->logvol_info; 2606 2607 /* get information from fe/efe */ 2608 if (vat_node->fe) { 2609 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2610 ea_start = vat_node->fe->data; 2611 } else { 2612 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2613 ea_start = vat_node->efe->data; 2614 } 2615 2616 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2617 if (error) 2618 return error; 2619 /* found, it existed */ 2620 2621 /* paranoia */ 2622 implext = (struct impl_extattr_entry *) (ea_start + offset); 2623 error = udf_impl_extattr_check(implext); 2624 if (error) { 2625 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2626 return error; 2627 } 2628 /* it is correct */ 2629 2630 /* 2631 * we have found our "VAT LVExtension attribute. BUT due to a 2632 * bug in the specification it might not be word aligned so 2633 * copy first to avoid panics on some machines (!!) 2634 */ 2635 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2636 lvextpos = implext->data + udf_rw32(implext->iu_l); 2637 2638 lvext.unique_id_chk = vat_uniqueid; 2639 lvext.num_files = lvinfo->num_files; 2640 lvext.num_directories = lvinfo->num_directories; 2641 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2642 2643 memcpy(lvextpos, &lvext, sizeof(lvext)); 2644 2645 return 0; 2646 } 2647 2648 /* --------------------------------------------------------------------- */ 2649 2650 int 2651 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2652 { 2653 struct udf_mount *ump = vat_node->ump; 2654 2655 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2656 return EINVAL; 2657 2658 memcpy(blob, ump->vat_table + offset, size); 2659 return 0; 2660 } 2661 2662 int 2663 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2664 { 2665 struct udf_mount *ump = vat_node->ump; 2666 uint32_t offset_high; 2667 uint8_t *new_vat_table; 2668 2669 /* extent VAT allocation if needed */ 2670 offset_high = offset + size; 2671 if (offset_high >= ump->vat_table_alloc_len) { 2672 /* realloc */ 2673 new_vat_table = realloc(ump->vat_table, 2674 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2675 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2676 if (!new_vat_table) { 2677 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2678 return ENOMEM; 2679 } 2680 ump->vat_table = new_vat_table; 2681 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2682 } 2683 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2684 2685 memcpy(ump->vat_table + offset, blob, size); 2686 return 0; 2687 } 2688 2689 /* --------------------------------------------------------------------- */ 2690 2691 /* TODO support previous VAT location writeout */ 2692 static int 2693 udf_update_vat_descriptor(struct udf_mount *ump) 2694 { 2695 struct udf_node *vat_node = ump->vat_node; 2696 struct udf_logvol_info *lvinfo = ump->logvol_info; 2697 struct icb_tag *icbtag; 2698 struct udf_oldvat_tail *oldvat_tl; 2699 struct udf_vat *vat; 2700 uint64_t unique_id; 2701 uint32_t lb_size; 2702 uint8_t *raw_vat; 2703 int filetype, error; 2704 2705 KASSERT(vat_node); 2706 KASSERT(lvinfo); 2707 lb_size = udf_rw32(ump->logical_vol->lb_size); 2708 2709 /* get our new unique_id */ 2710 unique_id = udf_advance_uniqueid(ump); 2711 2712 /* get information from fe/efe */ 2713 if (vat_node->fe) { 2714 icbtag = &vat_node->fe->icbtag; 2715 vat_node->fe->unique_id = udf_rw64(unique_id); 2716 } else { 2717 icbtag = &vat_node->efe->icbtag; 2718 vat_node->efe->unique_id = udf_rw64(unique_id); 2719 } 2720 2721 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2722 filetype = icbtag->file_type; 2723 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2724 2725 /* allocate piece to process head or tail of VAT file */ 2726 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2727 2728 if (filetype == 0) { 2729 /* 2730 * Update "*UDF VAT LVExtension" extended attribute from the 2731 * lvint if present. 2732 */ 2733 udf_update_vat_extattr_from_lvid(vat_node); 2734 2735 /* setup identifying regid */ 2736 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2737 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2738 2739 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2740 udf_add_udf_regid(ump, &oldvat_tl->id); 2741 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2742 2743 /* write out new tail of virtual allocation table file */ 2744 error = udf_vat_write(vat_node, raw_vat, 2745 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2746 } else { 2747 /* compose the VAT2 header */ 2748 vat = (struct udf_vat *) raw_vat; 2749 memset(vat, 0, sizeof(struct udf_vat)); 2750 2751 vat->header_len = udf_rw16(152); /* as per spec */ 2752 vat->impl_use_len = udf_rw16(0); 2753 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2754 vat->prev_vat = udf_rw32(0xffffffff); 2755 vat->num_files = lvinfo->num_files; 2756 vat->num_directories = lvinfo->num_directories; 2757 vat->min_udf_readver = lvinfo->min_udf_readver; 2758 vat->min_udf_writever = lvinfo->min_udf_writever; 2759 vat->max_udf_writever = lvinfo->max_udf_writever; 2760 2761 error = udf_vat_write(vat_node, raw_vat, 2762 sizeof(struct udf_vat), 0); 2763 } 2764 free(raw_vat, M_TEMP); 2765 2766 return error; /* success! */ 2767 } 2768 2769 2770 int 2771 udf_writeout_vat(struct udf_mount *ump) 2772 { 2773 struct udf_node *vat_node = ump->vat_node; 2774 uint32_t vat_length; 2775 int error; 2776 2777 KASSERT(vat_node); 2778 2779 DPRINTF(CALL, ("udf_writeout_vat\n")); 2780 2781 mutex_enter(&ump->allocate_mutex); 2782 udf_update_vat_descriptor(ump); 2783 2784 /* write out the VAT contents ; TODO intelligent writing */ 2785 vat_length = ump->vat_table_len; 2786 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2787 ump->vat_table, ump->vat_table_len, 0, 2788 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2789 if (error) { 2790 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2791 goto out; 2792 } 2793 2794 mutex_exit(&ump->allocate_mutex); 2795 2796 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2797 error = VOP_FSYNC(ump->vat_node->vnode, 2798 FSCRED, FSYNC_WAIT, 0, 0); 2799 if (error) 2800 printf("udf_writeout_vat: error writing VAT node!\n"); 2801 out: 2802 2803 return error; 2804 } 2805 2806 /* --------------------------------------------------------------------- */ 2807 2808 /* 2809 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2810 * descriptor. If OK, read in complete VAT file. 2811 */ 2812 2813 static int 2814 udf_check_for_vat(struct udf_node *vat_node) 2815 { 2816 struct udf_mount *ump; 2817 struct icb_tag *icbtag; 2818 struct timestamp *mtime; 2819 struct udf_vat *vat; 2820 struct udf_oldvat_tail *oldvat_tl; 2821 struct udf_logvol_info *lvinfo; 2822 uint64_t unique_id; 2823 uint32_t vat_length; 2824 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2825 uint32_t sector_size; 2826 uint32_t *raw_vat; 2827 uint8_t *vat_table; 2828 char *regid_name; 2829 int filetype; 2830 int error; 2831 2832 /* vat_length is really 64 bits though impossible */ 2833 2834 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2835 if (!vat_node) 2836 return ENOENT; 2837 2838 /* get mount info */ 2839 ump = vat_node->ump; 2840 sector_size = udf_rw32(ump->logical_vol->lb_size); 2841 2842 /* check assertions */ 2843 assert(vat_node->fe || vat_node->efe); 2844 assert(ump->logvol_integrity); 2845 2846 /* set vnode type to regular file or we can't read from it! */ 2847 vat_node->vnode->v_type = VREG; 2848 2849 /* get information from fe/efe */ 2850 if (vat_node->fe) { 2851 vat_length = udf_rw64(vat_node->fe->inf_len); 2852 icbtag = &vat_node->fe->icbtag; 2853 mtime = &vat_node->fe->mtime; 2854 unique_id = udf_rw64(vat_node->fe->unique_id); 2855 } else { 2856 vat_length = udf_rw64(vat_node->efe->inf_len); 2857 icbtag = &vat_node->efe->icbtag; 2858 mtime = &vat_node->efe->mtime; 2859 unique_id = udf_rw64(vat_node->efe->unique_id); 2860 } 2861 2862 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2863 filetype = icbtag->file_type; 2864 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2865 return ENOENT; 2866 2867 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2868 2869 vat_table_alloc_len = 2870 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2871 * UDF_VAT_CHUNKSIZE; 2872 2873 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2874 M_CANFAIL | M_WAITOK); 2875 if (vat_table == NULL) { 2876 printf("allocation of %d bytes failed for VAT\n", 2877 vat_table_alloc_len); 2878 return ENOMEM; 2879 } 2880 2881 /* allocate piece to read in head or tail of VAT file */ 2882 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2883 2884 /* 2885 * check contents of the file if its the old 1.50 VAT table format. 2886 * Its notoriously broken and allthough some implementations support an 2887 * extention as defined in the UDF 1.50 errata document, its doubtfull 2888 * to be useable since a lot of implementations don't maintain it. 2889 */ 2890 lvinfo = ump->logvol_info; 2891 2892 if (filetype == 0) { 2893 /* definition */ 2894 vat_offset = 0; 2895 vat_entries = (vat_length-36)/4; 2896 2897 /* read in tail of virtual allocation table file */ 2898 error = vn_rdwr(UIO_READ, vat_node->vnode, 2899 (uint8_t *) raw_vat, 2900 sizeof(struct udf_oldvat_tail), 2901 vat_entries * 4, 2902 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2903 NULL, NULL); 2904 if (error) 2905 goto out; 2906 2907 /* check 1.50 VAT */ 2908 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2909 regid_name = (char *) oldvat_tl->id.id; 2910 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2911 if (error) { 2912 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2913 error = ENOENT; 2914 goto out; 2915 } 2916 2917 /* 2918 * update LVID from "*UDF VAT LVExtension" extended attribute 2919 * if present. 2920 */ 2921 udf_update_lvid_from_vat_extattr(vat_node); 2922 } else { 2923 /* read in head of virtual allocation table file */ 2924 error = vn_rdwr(UIO_READ, vat_node->vnode, 2925 (uint8_t *) raw_vat, 2926 sizeof(struct udf_vat), 0, 2927 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2928 NULL, NULL); 2929 if (error) 2930 goto out; 2931 2932 /* definition */ 2933 vat = (struct udf_vat *) raw_vat; 2934 vat_offset = vat->header_len; 2935 vat_entries = (vat_length - vat_offset)/4; 2936 2937 assert(lvinfo); 2938 lvinfo->num_files = vat->num_files; 2939 lvinfo->num_directories = vat->num_directories; 2940 lvinfo->min_udf_readver = vat->min_udf_readver; 2941 lvinfo->min_udf_writever = vat->min_udf_writever; 2942 lvinfo->max_udf_writever = vat->max_udf_writever; 2943 2944 udf_update_logvolname(ump, vat->logvol_id); 2945 } 2946 2947 /* read in complete VAT file */ 2948 error = vn_rdwr(UIO_READ, vat_node->vnode, 2949 vat_table, 2950 vat_length, 0, 2951 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2952 NULL, NULL); 2953 if (error) 2954 printf("read in of complete VAT file failed (error %d)\n", 2955 error); 2956 if (error) 2957 goto out; 2958 2959 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2960 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2961 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2962 ump->logvol_integrity->time = *mtime; 2963 2964 ump->vat_table_len = vat_length; 2965 ump->vat_table_alloc_len = vat_table_alloc_len; 2966 ump->vat_table = vat_table; 2967 ump->vat_offset = vat_offset; 2968 ump->vat_entries = vat_entries; 2969 ump->vat_last_free_lb = 0; /* start at beginning */ 2970 2971 out: 2972 if (error) { 2973 if (vat_table) 2974 free(vat_table, M_UDFVOLD); 2975 } 2976 free(raw_vat, M_TEMP); 2977 2978 return error; 2979 } 2980 2981 /* --------------------------------------------------------------------- */ 2982 2983 static int 2984 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2985 { 2986 struct udf_node *vat_node; 2987 struct long_ad icb_loc; 2988 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2989 int error; 2990 2991 /* mapping info not needed */ 2992 mapping = mapping; 2993 2994 vat_loc = ump->last_possible_vat_location; 2995 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2996 2997 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2998 vat_loc, early_vat_loc)); 2999 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 3000 late_vat_loc = vat_loc + 1024; 3001 3002 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 3003 vat_loc, early_vat_loc)); 3004 3005 /* start looking from the end of the range */ 3006 do { 3007 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 3008 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 3009 icb_loc.loc.lb_num = udf_rw32(vat_loc); 3010 3011 error = udf_get_node(ump, &icb_loc, &vat_node); 3012 if (!error) { 3013 error = udf_check_for_vat(vat_node); 3014 DPRINTFIF(VOLUMES, !error, 3015 ("VAT accepted at %d\n", vat_loc)); 3016 if (!error) 3017 break; 3018 } 3019 if (vat_node) { 3020 vput(vat_node->vnode); 3021 vat_node = NULL; 3022 } 3023 vat_loc--; /* walk backwards */ 3024 } while (vat_loc >= early_vat_loc); 3025 3026 /* keep our VAT node around */ 3027 if (vat_node) { 3028 UDF_SET_SYSTEMFILE(vat_node->vnode); 3029 ump->vat_node = vat_node; 3030 } 3031 3032 return error; 3033 } 3034 3035 /* --------------------------------------------------------------------- */ 3036 3037 static int 3038 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 3039 { 3040 union dscrptr *dscr; 3041 struct part_map_spare *pms = &mapping->pms; 3042 uint32_t lb_num; 3043 int spar, error; 3044 3045 /* 3046 * The partition mapping passed on to us specifies the information we 3047 * need to locate and initialise the sparable partition mapping 3048 * information we need. 3049 */ 3050 3051 DPRINTF(VOLUMES, ("Read sparable table\n")); 3052 ump->sparable_packet_size = udf_rw16(pms->packet_len); 3053 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3054 3055 for (spar = 0; spar < pms->n_st; spar++) { 3056 lb_num = pms->st_loc[spar]; 3057 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3058 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3059 if (!error && dscr) { 3060 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3061 if (ump->sparing_table) 3062 free(ump->sparing_table, M_UDFVOLD); 3063 ump->sparing_table = &dscr->spt; 3064 dscr = NULL; 3065 DPRINTF(VOLUMES, 3066 ("Sparing table accepted (%d entries)\n", 3067 udf_rw16(ump->sparing_table->rt_l))); 3068 break; /* we're done */ 3069 } 3070 } 3071 if (dscr) 3072 free(dscr, M_UDFVOLD); 3073 } 3074 3075 if (ump->sparing_table) 3076 return 0; 3077 3078 return ENOENT; 3079 } 3080 3081 /* --------------------------------------------------------------------- */ 3082 3083 static int 3084 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3085 { 3086 struct part_map_meta *pmm = &mapping->pmm; 3087 struct long_ad icb_loc; 3088 struct vnode *vp; 3089 int error; 3090 3091 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3092 icb_loc.loc.part_num = pmm->part_num; 3093 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3094 DPRINTF(VOLUMES, ("Metadata file\n")); 3095 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3096 if (ump->metadata_node) { 3097 vp = ump->metadata_node->vnode; 3098 UDF_SET_SYSTEMFILE(vp); 3099 } 3100 3101 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3102 if (icb_loc.loc.lb_num != -1) { 3103 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3104 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3105 if (ump->metadatamirror_node) { 3106 vp = ump->metadatamirror_node->vnode; 3107 UDF_SET_SYSTEMFILE(vp); 3108 } 3109 } 3110 3111 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3112 if (icb_loc.loc.lb_num != -1) { 3113 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3114 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3115 if (ump->metadatabitmap_node) { 3116 vp = ump->metadatabitmap_node->vnode; 3117 UDF_SET_SYSTEMFILE(vp); 3118 } 3119 } 3120 3121 /* if we're mounting read-only we relax the requirements */ 3122 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3123 error = EFAULT; 3124 if (ump->metadata_node) 3125 error = 0; 3126 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3127 printf( "udf mount: Metadata file not readable, " 3128 "substituting Metadata copy file\n"); 3129 ump->metadata_node = ump->metadatamirror_node; 3130 ump->metadatamirror_node = NULL; 3131 error = 0; 3132 } 3133 } else { 3134 /* mounting read/write */ 3135 /* XXX DISABLED! metadata writing is not working yet XXX */ 3136 if (error) 3137 error = EROFS; 3138 } 3139 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3140 "metadata files\n")); 3141 return error; 3142 } 3143 3144 /* --------------------------------------------------------------------- */ 3145 3146 int 3147 udf_read_vds_tables(struct udf_mount *ump) 3148 { 3149 union udf_pmap *mapping; 3150 /* struct udf_args *args = &ump->mount_args; */ 3151 uint32_t n_pm, mt_l; 3152 uint32_t log_part; 3153 uint8_t *pmap_pos; 3154 int pmap_size; 3155 int error; 3156 3157 /* Iterate (again) over the part mappings for locations */ 3158 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3159 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 3160 pmap_pos = ump->logical_vol->maps; 3161 3162 for (log_part = 0; log_part < n_pm; log_part++) { 3163 mapping = (union udf_pmap *) pmap_pos; 3164 switch (ump->vtop_tp[log_part]) { 3165 case UDF_VTOP_TYPE_PHYS : 3166 /* nothing */ 3167 break; 3168 case UDF_VTOP_TYPE_VIRT : 3169 /* search and load VAT */ 3170 error = udf_search_vat(ump, mapping); 3171 if (error) 3172 return ENOENT; 3173 break; 3174 case UDF_VTOP_TYPE_SPARABLE : 3175 /* load one of the sparable tables */ 3176 error = udf_read_sparables(ump, mapping); 3177 if (error) 3178 return ENOENT; 3179 break; 3180 case UDF_VTOP_TYPE_META : 3181 /* load the associated file descriptors */ 3182 error = udf_read_metadata_nodes(ump, mapping); 3183 if (error) 3184 return ENOENT; 3185 break; 3186 default: 3187 break; 3188 } 3189 pmap_size = pmap_pos[1]; 3190 pmap_pos += pmap_size; 3191 } 3192 3193 /* read in and check unallocated and free space info if writing */ 3194 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3195 error = udf_read_physical_partition_spacetables(ump); 3196 if (error) 3197 return error; 3198 3199 /* also read in metadata partion spacebitmap if defined */ 3200 error = udf_read_metadata_partition_spacetable(ump); 3201 return error; 3202 } 3203 3204 return 0; 3205 } 3206 3207 /* --------------------------------------------------------------------- */ 3208 3209 int 3210 udf_read_rootdirs(struct udf_mount *ump) 3211 { 3212 union dscrptr *dscr; 3213 /* struct udf_args *args = &ump->mount_args; */ 3214 struct udf_node *rootdir_node, *streamdir_node; 3215 struct long_ad fsd_loc, *dir_loc; 3216 uint32_t lb_num, dummy; 3217 uint32_t fsd_len; 3218 int dscr_type; 3219 int error; 3220 3221 /* TODO implement FSD reading in separate function like integrity? */ 3222 /* get fileset descriptor sequence */ 3223 fsd_loc = ump->logical_vol->lv_fsd_loc; 3224 fsd_len = udf_rw32(fsd_loc.len); 3225 3226 dscr = NULL; 3227 error = 0; 3228 while (fsd_len || error) { 3229 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3230 /* translate fsd_loc to lb_num */ 3231 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3232 if (error) 3233 break; 3234 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3235 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3236 /* end markers */ 3237 if (error || (dscr == NULL)) 3238 break; 3239 3240 /* analyse */ 3241 dscr_type = udf_rw16(dscr->tag.id); 3242 if (dscr_type == TAGID_TERM) 3243 break; 3244 if (dscr_type != TAGID_FSD) { 3245 free(dscr, M_UDFVOLD); 3246 return ENOENT; 3247 } 3248 3249 /* 3250 * TODO check for multiple fileset descriptors; its only 3251 * picking the last now. Also check for FSD 3252 * correctness/interpretability 3253 */ 3254 3255 /* update */ 3256 if (ump->fileset_desc) { 3257 free(ump->fileset_desc, M_UDFVOLD); 3258 } 3259 ump->fileset_desc = &dscr->fsd; 3260 dscr = NULL; 3261 3262 /* continue to the next fsd */ 3263 fsd_len -= ump->discinfo.sector_size; 3264 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3265 3266 /* follow up to fsd->next_ex (long_ad) if its not null */ 3267 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3268 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3269 fsd_loc = ump->fileset_desc->next_ex; 3270 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3271 } 3272 } 3273 if (dscr) 3274 free(dscr, M_UDFVOLD); 3275 3276 /* there has to be one */ 3277 if (ump->fileset_desc == NULL) 3278 return ENOENT; 3279 3280 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3281 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3282 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3283 3284 /* 3285 * Now the FSD is known, read in the rootdirectory and if one exists, 3286 * the system stream dir. Some files in the system streamdir are not 3287 * wanted in this implementation since they are not maintained. If 3288 * writing is enabled we'll delete these files if they exist. 3289 */ 3290 3291 rootdir_node = streamdir_node = NULL; 3292 dir_loc = NULL; 3293 3294 /* try to read in the rootdir */ 3295 dir_loc = &ump->fileset_desc->rootdir_icb; 3296 error = udf_get_node(ump, dir_loc, &rootdir_node); 3297 if (error) 3298 return ENOENT; 3299 3300 /* aparently it read in fine */ 3301 3302 /* 3303 * Try the system stream directory; not very likely in the ones we 3304 * test, but for completeness. 3305 */ 3306 dir_loc = &ump->fileset_desc->streamdir_icb; 3307 if (udf_rw32(dir_loc->len)) { 3308 printf("udf_read_rootdirs: streamdir defined "); 3309 error = udf_get_node(ump, dir_loc, &streamdir_node); 3310 if (error) { 3311 printf("but error in streamdir reading\n"); 3312 } else { 3313 printf("but ignored\n"); 3314 /* 3315 * TODO process streamdir `baddies' i.e. files we dont 3316 * want if R/W 3317 */ 3318 } 3319 } 3320 3321 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3322 3323 /* release the vnodes again; they'll be auto-recycled later */ 3324 if (streamdir_node) { 3325 vput(streamdir_node->vnode); 3326 } 3327 if (rootdir_node) { 3328 vput(rootdir_node->vnode); 3329 } 3330 3331 return 0; 3332 } 3333 3334 /* --------------------------------------------------------------------- */ 3335 3336 /* To make absolutely sure we are NOT returning zero, add one :) */ 3337 3338 long 3339 udf_calchash(struct long_ad *icbptr) 3340 { 3341 /* ought to be enough since each mountpoint has its own chain */ 3342 return udf_rw32(icbptr->loc.lb_num) + 1; 3343 } 3344 3345 3346 static struct udf_node * 3347 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3348 { 3349 struct udf_node *node; 3350 struct vnode *vp; 3351 uint32_t hashline; 3352 3353 loop: 3354 mutex_enter(&ump->ihash_lock); 3355 3356 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3357 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3358 assert(node); 3359 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3360 node->loc.loc.part_num == icbptr->loc.part_num) { 3361 vp = node->vnode; 3362 assert(vp); 3363 mutex_enter(&vp->v_interlock); 3364 mutex_exit(&ump->ihash_lock); 3365 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3366 goto loop; 3367 return node; 3368 } 3369 } 3370 mutex_exit(&ump->ihash_lock); 3371 3372 return NULL; 3373 } 3374 3375 3376 static void 3377 udf_sorted_list_insert(struct udf_node *node) 3378 { 3379 struct udf_mount *ump; 3380 struct udf_node *s_node, *last_node; 3381 uint32_t loc, s_loc; 3382 3383 ump = node->ump; 3384 last_node = NULL; /* XXX gcc */ 3385 3386 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3387 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3388 return; 3389 } 3390 3391 /* 3392 * We sort on logical block number here and not on physical block 3393 * number here. Ideally we should go for the physical block nr to get 3394 * better sync performance though this sort will ensure that packets 3395 * won't get spit up unnessisarily. 3396 */ 3397 3398 loc = udf_rw32(node->loc.loc.lb_num); 3399 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3400 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3401 if (s_loc > loc) { 3402 LIST_INSERT_BEFORE(s_node, node, sortchain); 3403 return; 3404 } 3405 last_node = s_node; 3406 } 3407 LIST_INSERT_AFTER(last_node, node, sortchain); 3408 } 3409 3410 3411 static void 3412 udf_register_node(struct udf_node *node) 3413 { 3414 struct udf_mount *ump; 3415 struct udf_node *chk; 3416 uint32_t hashline; 3417 3418 ump = node->ump; 3419 mutex_enter(&ump->ihash_lock); 3420 3421 /* add to our hash table */ 3422 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3423 #ifdef DEBUG 3424 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3425 assert(chk); 3426 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3427 chk->loc.loc.part_num == node->loc.loc.part_num) 3428 panic("Double node entered\n"); 3429 } 3430 #else 3431 chk = NULL; 3432 #endif 3433 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3434 3435 /* add to our sorted list */ 3436 udf_sorted_list_insert(node); 3437 3438 mutex_exit(&ump->ihash_lock); 3439 } 3440 3441 3442 static void 3443 udf_deregister_node(struct udf_node *node) 3444 { 3445 struct udf_mount *ump; 3446 3447 ump = node->ump; 3448 mutex_enter(&ump->ihash_lock); 3449 3450 /* from hash and sorted list */ 3451 LIST_REMOVE(node, hashchain); 3452 LIST_REMOVE(node, sortchain); 3453 3454 mutex_exit(&ump->ihash_lock); 3455 } 3456 3457 /* --------------------------------------------------------------------- */ 3458 3459 static int 3460 udf_validate_session_start(struct udf_mount *ump) 3461 { 3462 struct mmc_trackinfo trackinfo; 3463 struct vrs_desc *vrs; 3464 uint32_t tracknr, sessionnr, sector, sector_size; 3465 uint32_t iso9660_vrs, write_track_start; 3466 uint8_t *buffer, *blank, *pos; 3467 int blks, max_sectors, vrs_len; 3468 int error; 3469 3470 /* disc appendable? */ 3471 if (ump->discinfo.disc_state == MMC_STATE_FULL) 3472 return EROFS; 3473 3474 /* already written here? if so, there should be an ISO VDS */ 3475 if (ump->discinfo.last_session_state == MMC_STATE_INCOMPLETE) 3476 return 0; 3477 3478 /* 3479 * Check if the first track of the session is blank and if so, copy or 3480 * create a dummy ISO descriptor so the disc is valid again. 3481 */ 3482 3483 tracknr = ump->discinfo.first_track_last_session; 3484 memset(&trackinfo, 0, sizeof(struct mmc_trackinfo)); 3485 trackinfo.tracknr = tracknr; 3486 error = udf_update_trackinfo(ump, &trackinfo); 3487 if (error) 3488 return error; 3489 3490 udf_dump_trackinfo(&trackinfo); 3491 KASSERT(trackinfo.flags & (MMC_TRACKINFO_BLANK | MMC_TRACKINFO_RESERVED)); 3492 KASSERT(trackinfo.sessionnr > 1); 3493 3494 KASSERT(trackinfo.flags & MMC_TRACKINFO_NWA_VALID); 3495 write_track_start = trackinfo.next_writable; 3496 3497 /* we have to copy the ISO VRS from a former session */ 3498 DPRINTF(VOLUMES, ("validate_session_start: " 3499 "blank or reserved track, copying VRS\n")); 3500 3501 /* sessionnr should be the session we're mounting */ 3502 sessionnr = ump->mount_args.sessionnr; 3503 3504 /* start at the first track */ 3505 tracknr = ump->discinfo.first_track; 3506 while (tracknr <= ump->discinfo.num_tracks) { 3507 trackinfo.tracknr = tracknr; 3508 error = udf_update_trackinfo(ump, &trackinfo); 3509 if (error) { 3510 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3511 return error; 3512 } 3513 if (trackinfo.sessionnr == sessionnr) 3514 break; 3515 tracknr++; 3516 } 3517 if (trackinfo.sessionnr != sessionnr) { 3518 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3519 return ENOENT; 3520 } 3521 3522 DPRINTF(VOLUMES, ("found possible former ISO VRS at\n")); 3523 udf_dump_trackinfo(&trackinfo); 3524 3525 /* 3526 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3527 * minimum ISO `sector size' 2048 3528 */ 3529 sector_size = ump->discinfo.sector_size; 3530 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3531 + trackinfo.track_start; 3532 3533 buffer = malloc(UDF_ISO_VRS_SIZE, M_TEMP, M_WAITOK); 3534 max_sectors = UDF_ISO_VRS_SIZE / sector_size; 3535 blks = MAX(1, 2048 / sector_size); 3536 3537 error = 0; 3538 for (sector = 0; sector < max_sectors; sector += blks) { 3539 pos = buffer + sector * sector_size; 3540 error = udf_read_phys_sectors(ump, UDF_C_DSCR, pos, 3541 iso9660_vrs + sector, blks); 3542 if (error) 3543 break; 3544 /* check this ISO descriptor */ 3545 vrs = (struct vrs_desc *) pos; 3546 DPRINTF(VOLUMES, ("got VRS id `%4s`\n", vrs->identifier)); 3547 if (strncmp(vrs->identifier, VRS_CD001, 5) == 0) 3548 continue; 3549 if (strncmp(vrs->identifier, VRS_CDW02, 5) == 0) 3550 continue; 3551 if (strncmp(vrs->identifier, VRS_BEA01, 5) == 0) 3552 continue; 3553 if (strncmp(vrs->identifier, VRS_NSR02, 5) == 0) 3554 continue; 3555 if (strncmp(vrs->identifier, VRS_NSR03, 5) == 0) 3556 continue; 3557 if (strncmp(vrs->identifier, VRS_TEA01, 5) == 0) 3558 break; 3559 /* now what? for now, end of sequence */ 3560 break; 3561 } 3562 vrs_len = sector + blks; 3563 if (error) { 3564 DPRINTF(VOLUMES, ("error reading old ISO VRS\n")); 3565 DPRINTF(VOLUMES, ("creating minimal ISO VRS\n")); 3566 3567 memset(buffer, 0, UDF_ISO_VRS_SIZE); 3568 3569 vrs = (struct vrs_desc *) (buffer); 3570 vrs->struct_type = 0; 3571 vrs->version = 1; 3572 memcpy(vrs->identifier,VRS_BEA01, 5); 3573 3574 vrs = (struct vrs_desc *) (buffer + 2048); 3575 vrs->struct_type = 0; 3576 vrs->version = 1; 3577 if (ump->logical_vol->tag.descriptor_ver == 2) { 3578 memcpy(vrs->identifier,VRS_NSR02, 5); 3579 } else { 3580 memcpy(vrs->identifier,VRS_NSR03, 5); 3581 } 3582 3583 vrs = (struct vrs_desc *) (buffer + 4096); 3584 vrs->struct_type = 0; 3585 vrs->version = 1; 3586 memcpy(vrs->identifier, VRS_TEA01, 5); 3587 3588 vrs_len = 3*blks; 3589 } 3590 3591 DPRINTF(VOLUMES, ("Got VRS of %d sectors long\n", vrs_len)); 3592 3593 /* 3594 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3595 * minimum ISO `sector size' 2048 3596 */ 3597 sector_size = ump->discinfo.sector_size; 3598 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3599 + write_track_start; 3600 3601 /* write out 32 kb */ 3602 blank = malloc(sector_size, M_TEMP, M_WAITOK); 3603 memset(blank, 0, sector_size); 3604 error = 0; 3605 for (sector = write_track_start; sector < iso9660_vrs; sector ++) { 3606 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3607 blank, sector, 1); 3608 if (error) 3609 break; 3610 } 3611 if (!error) { 3612 /* write out our ISO VRS */ 3613 KASSERT(sector == iso9660_vrs); 3614 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, buffer, 3615 sector, vrs_len); 3616 sector += vrs_len; 3617 } 3618 if (!error) { 3619 /* fill upto the first anchor at S+256 */ 3620 for (; sector < write_track_start+256; sector++) { 3621 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3622 blank, sector, 1); 3623 if (error) 3624 break; 3625 } 3626 } 3627 if (!error) { 3628 /* write out anchor; write at ABSOLUTE place! */ 3629 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_ABSOLUTE, 3630 (union dscrptr *) ump->anchors[0], sector, sector); 3631 if (error) 3632 printf("writeout of anchor failed!\n"); 3633 } 3634 3635 free(blank, M_TEMP); 3636 free(buffer, M_TEMP); 3637 3638 if (error) 3639 printf("udf_open_session: error writing iso vrs! : " 3640 "leaving disc in compromised state!\n"); 3641 3642 /* synchronise device caches */ 3643 (void) udf_synchronise_caches(ump); 3644 3645 return error; 3646 } 3647 3648 3649 int 3650 udf_open_logvol(struct udf_mount *ump) 3651 { 3652 int logvol_integrity; 3653 int error; 3654 3655 /* already/still open? */ 3656 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3657 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3658 return 0; 3659 3660 /* can we open it ? */ 3661 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3662 return EROFS; 3663 3664 /* setup write parameters */ 3665 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3666 if ((error = udf_setup_writeparams(ump)) != 0) 3667 return error; 3668 3669 /* determine data and metadata tracks (most likely same) */ 3670 error = udf_search_writing_tracks(ump); 3671 if (error) { 3672 /* most likely lack of space */ 3673 printf("udf_open_logvol: error searching writing tracks\n"); 3674 return EROFS; 3675 } 3676 3677 /* writeout/update lvint on disc or only in memory */ 3678 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3679 if (ump->lvopen & UDF_OPEN_SESSION) { 3680 /* TODO optional track reservation opening */ 3681 error = udf_validate_session_start(ump); 3682 if (error) 3683 return error; 3684 3685 /* determine data and metadata tracks again */ 3686 error = udf_search_writing_tracks(ump); 3687 } 3688 3689 /* mark it open */ 3690 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3691 3692 /* do we need to write it out? */ 3693 if (ump->lvopen & UDF_WRITE_LVINT) { 3694 error = udf_writeout_lvint(ump, ump->lvopen); 3695 /* if we couldn't write it mark it closed again */ 3696 if (error) { 3697 ump->logvol_integrity->integrity_type = 3698 udf_rw32(UDF_INTEGRITY_CLOSED); 3699 return error; 3700 } 3701 } 3702 3703 return 0; 3704 } 3705 3706 3707 int 3708 udf_close_logvol(struct udf_mount *ump, int mntflags) 3709 { 3710 struct vnode *devvp = ump->devvp; 3711 struct mmc_op mmc_op; 3712 int logvol_integrity; 3713 int error = 0, error1 = 0, error2 = 0; 3714 int tracknr; 3715 int nvats, n, nok; 3716 3717 /* already/still closed? */ 3718 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3719 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3720 return 0; 3721 3722 /* writeout/update lvint or write out VAT */ 3723 DPRINTF(VOLUMES, ("udf_close_logvol: closing logical volume\n")); 3724 #ifdef DIAGNOSTIC 3725 if (ump->lvclose & UDF_CLOSE_SESSION) 3726 KASSERT(ump->lvclose & UDF_WRITE_VAT); 3727 #endif 3728 3729 if (ump->lvclose & UDF_WRITE_VAT) { 3730 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3731 3732 /* write out the VAT data and all its descriptors */ 3733 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3734 udf_writeout_vat(ump); 3735 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3736 3737 (void) VOP_FSYNC(ump->vat_node->vnode, 3738 FSCRED, FSYNC_WAIT, 0, 0); 3739 3740 if (ump->lvclose & UDF_CLOSE_SESSION) { 3741 DPRINTF(VOLUMES, ("udf_close_logvol: closing session " 3742 "as requested\n")); 3743 } 3744 3745 /* at least two DVD packets and 3 CD-R packets */ 3746 nvats = 32; 3747 3748 #if notyet 3749 /* 3750 * TODO calculate the available space and if the disc is 3751 * allmost full, write out till end-256-1 with banks, write 3752 * AVDP and fill up with VATs, then close session and close 3753 * disc. 3754 */ 3755 if (ump->lvclose & UDF_FINALISE_DISC) { 3756 error = udf_write_phys_dscr_sync(ump, NULL, 3757 UDF_C_FLOAT_DSCR, 3758 (union dscrptr *) ump->anchors[0], 3759 0, 0); 3760 if (error) 3761 printf("writeout of anchor failed!\n"); 3762 3763 /* pad space with VAT ICBs */ 3764 nvats = 256; 3765 } 3766 #endif 3767 3768 /* write out a number of VAT nodes */ 3769 nok = 0; 3770 for (n = 0; n < nvats; n++) { 3771 /* will now only write last FE/EFE */ 3772 ump->vat_node->i_flags |= IN_MODIFIED; 3773 error = VOP_FSYNC(ump->vat_node->vnode, 3774 FSCRED, FSYNC_WAIT, 0, 0); 3775 if (!error) 3776 nok++; 3777 } 3778 if (nok < 14) { 3779 /* arbitrary; but at least one or two CD frames */ 3780 printf("writeout of at least 14 VATs failed\n"); 3781 return error; 3782 } 3783 } 3784 3785 /* NOTE the disc is in a (minimal) valid state now; no erroring out */ 3786 3787 /* finish closing of session */ 3788 if (ump->lvclose & UDF_CLOSE_SESSION) { 3789 error = udf_validate_session_start(ump); 3790 if (error) 3791 return error; 3792 3793 /* close all associated tracks */ 3794 tracknr = ump->discinfo.first_track_last_session; 3795 error = 0; 3796 while (tracknr <= ump->discinfo.last_track_last_session) { 3797 DPRINTF(VOLUMES, ("\tclosing possible open " 3798 "track %d\n", tracknr)); 3799 memset(&mmc_op, 0, sizeof(mmc_op)); 3800 mmc_op.operation = MMC_OP_CLOSETRACK; 3801 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3802 mmc_op.tracknr = tracknr; 3803 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3804 FKIOCTL, NOCRED); 3805 if (error) 3806 printf("udf_close_logvol: closing of " 3807 "track %d failed\n", tracknr); 3808 tracknr ++; 3809 } 3810 if (!error) { 3811 DPRINTF(VOLUMES, ("closing session\n")); 3812 memset(&mmc_op, 0, sizeof(mmc_op)); 3813 mmc_op.operation = MMC_OP_CLOSESESSION; 3814 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3815 mmc_op.sessionnr = ump->discinfo.num_sessions; 3816 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3817 FKIOCTL, NOCRED); 3818 if (error) 3819 printf("udf_close_logvol: closing of session" 3820 "failed\n"); 3821 } 3822 if (!error) 3823 ump->lvopen |= UDF_OPEN_SESSION; 3824 if (error) { 3825 printf("udf_close_logvol: leaving disc as it is\n"); 3826 ump->lvclose &= ~UDF_FINALISE_DISC; 3827 } 3828 } 3829 3830 if (ump->lvclose & UDF_FINALISE_DISC) { 3831 memset(&mmc_op, 0, sizeof(mmc_op)); 3832 mmc_op.operation = MMC_OP_FINALISEDISC; 3833 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3834 mmc_op.sessionnr = ump->discinfo.num_sessions; 3835 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3836 FKIOCTL, NOCRED); 3837 if (error) 3838 printf("udf_close_logvol: finalising disc" 3839 "failed\n"); 3840 } 3841 3842 /* write out partition bitmaps if requested */ 3843 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3844 /* sync writeout metadata spacetable if existing */ 3845 error1 = udf_write_metadata_partition_spacetable(ump, true); 3846 if (error1) 3847 printf( "udf_close_logvol: writeout of metadata space " 3848 "bitmap failed\n"); 3849 3850 /* sync writeout partition spacetables */ 3851 error2 = udf_write_physical_partition_spacetables(ump, true); 3852 if (error2) 3853 printf( "udf_close_logvol: writeout of space tables " 3854 "failed\n"); 3855 3856 if (error1 || error2) 3857 return (error1 | error2); 3858 3859 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3860 } 3861 3862 /* mark it closed */ 3863 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3864 3865 /* do we need to write out the logical volume integrity? */ 3866 if (ump->lvclose & UDF_WRITE_LVINT) 3867 error = udf_writeout_lvint(ump, ump->lvopen); 3868 if (error) { 3869 /* HELP now what? mark it open again for now */ 3870 ump->logvol_integrity->integrity_type = 3871 udf_rw32(UDF_INTEGRITY_OPEN); 3872 return error; 3873 } 3874 3875 (void) udf_synchronise_caches(ump); 3876 3877 return 0; 3878 } 3879 3880 /* --------------------------------------------------------------------- */ 3881 3882 /* 3883 * Genfs interfacing 3884 * 3885 * static const struct genfs_ops udf_genfsops = { 3886 * .gop_size = genfs_size, 3887 * size of transfers 3888 * .gop_alloc = udf_gop_alloc, 3889 * allocate len bytes at offset 3890 * .gop_write = genfs_gop_write, 3891 * putpages interface code 3892 * .gop_markupdate = udf_gop_markupdate, 3893 * set update/modify flags etc. 3894 * } 3895 */ 3896 3897 /* 3898 * Genfs interface. These four functions are the only ones defined though not 3899 * documented... great.... 3900 */ 3901 3902 /* 3903 * Callback from genfs to allocate len bytes at offset off; only called when 3904 * filling up gaps in the allocation. 3905 */ 3906 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3907 static int 3908 udf_gop_alloc(struct vnode *vp, off_t off, 3909 off_t len, int flags, kauth_cred_t cred) 3910 { 3911 #if 0 3912 struct udf_node *udf_node = VTOI(vp); 3913 struct udf_mount *ump = udf_node->ump; 3914 uint32_t lb_size, num_lb; 3915 #endif 3916 3917 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3918 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3919 3920 return 0; 3921 } 3922 3923 3924 /* 3925 * callback from genfs to update our flags 3926 */ 3927 static void 3928 udf_gop_markupdate(struct vnode *vp, int flags) 3929 { 3930 struct udf_node *udf_node = VTOI(vp); 3931 u_long mask = 0; 3932 3933 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3934 mask = IN_ACCESS; 3935 } 3936 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3937 if (vp->v_type == VREG) { 3938 mask |= IN_CHANGE | IN_UPDATE; 3939 } else { 3940 mask |= IN_MODIFY; 3941 } 3942 } 3943 if (mask) { 3944 udf_node->i_flags |= mask; 3945 } 3946 } 3947 3948 3949 static const struct genfs_ops udf_genfsops = { 3950 .gop_size = genfs_size, 3951 .gop_alloc = udf_gop_alloc, 3952 .gop_write = genfs_gop_write_rwmap, 3953 .gop_markupdate = udf_gop_markupdate, 3954 }; 3955 3956 3957 /* --------------------------------------------------------------------- */ 3958 3959 int 3960 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3961 { 3962 union dscrptr *dscr; 3963 int error; 3964 3965 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3966 bzero(dscr, ump->discinfo.sector_size); 3967 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3968 3969 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3970 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3971 (void) udf_validate_tag_and_crc_sums(dscr); 3972 3973 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3974 dscr, sector, sector); 3975 3976 free(dscr, M_TEMP); 3977 3978 return error; 3979 } 3980 3981 3982 /* --------------------------------------------------------------------- */ 3983 3984 /* UDF<->unix converters */ 3985 3986 /* --------------------------------------------------------------------- */ 3987 3988 static mode_t 3989 udf_perm_to_unix_mode(uint32_t perm) 3990 { 3991 mode_t mode; 3992 3993 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3994 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3995 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3996 3997 return mode; 3998 } 3999 4000 /* --------------------------------------------------------------------- */ 4001 4002 static uint32_t 4003 unix_mode_to_udf_perm(mode_t mode) 4004 { 4005 uint32_t perm; 4006 4007 perm = ((mode & S_IRWXO) ); 4008 perm |= ((mode & S_IRWXG) << 2); 4009 perm |= ((mode & S_IRWXU) << 4); 4010 perm |= ((mode & S_IWOTH) << 3); 4011 perm |= ((mode & S_IWGRP) << 5); 4012 perm |= ((mode & S_IWUSR) << 7); 4013 4014 return perm; 4015 } 4016 4017 /* --------------------------------------------------------------------- */ 4018 4019 static uint32_t 4020 udf_icb_to_unix_filetype(uint32_t icbftype) 4021 { 4022 switch (icbftype) { 4023 case UDF_ICB_FILETYPE_DIRECTORY : 4024 case UDF_ICB_FILETYPE_STREAMDIR : 4025 return S_IFDIR; 4026 case UDF_ICB_FILETYPE_FIFO : 4027 return S_IFIFO; 4028 case UDF_ICB_FILETYPE_CHARDEVICE : 4029 return S_IFCHR; 4030 case UDF_ICB_FILETYPE_BLOCKDEVICE : 4031 return S_IFBLK; 4032 case UDF_ICB_FILETYPE_RANDOMACCESS : 4033 case UDF_ICB_FILETYPE_REALTIME : 4034 return S_IFREG; 4035 case UDF_ICB_FILETYPE_SYMLINK : 4036 return S_IFLNK; 4037 case UDF_ICB_FILETYPE_SOCKET : 4038 return S_IFSOCK; 4039 } 4040 /* no idea what this is */ 4041 return 0; 4042 } 4043 4044 /* --------------------------------------------------------------------- */ 4045 4046 void 4047 udf_to_unix_name(char *result, int result_len, char *id, int len, 4048 struct charspec *chsp) 4049 { 4050 uint16_t *raw_name, *unix_name; 4051 uint16_t *inchp, ch; 4052 uint8_t *outchp; 4053 const char *osta_id = "OSTA Compressed Unicode"; 4054 int ucode_chars, nice_uchars, is_osta_typ0, nout; 4055 4056 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 4057 unix_name = raw_name + 1024; /* split space in half */ 4058 assert(sizeof(char) == sizeof(uint8_t)); 4059 outchp = (uint8_t *) result; 4060 4061 is_osta_typ0 = (chsp->type == 0); 4062 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4063 if (is_osta_typ0) { 4064 /* TODO clean up */ 4065 *raw_name = *unix_name = 0; 4066 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 4067 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 4068 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 4069 /* output UTF8 */ 4070 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 4071 ch = *inchp; 4072 nout = wput_utf8(outchp, result_len, ch); 4073 outchp += nout; result_len -= nout; 4074 if (!ch) break; 4075 } 4076 *outchp++ = 0; 4077 } else { 4078 /* assume 8bit char length byte latin-1 */ 4079 assert(*id == 8); 4080 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 4081 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 4082 } 4083 free(raw_name, M_UDFTEMP); 4084 } 4085 4086 /* --------------------------------------------------------------------- */ 4087 4088 void 4089 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 4090 struct charspec *chsp) 4091 { 4092 uint16_t *raw_name; 4093 uint16_t *outchp; 4094 const char *inchp; 4095 const char *osta_id = "OSTA Compressed Unicode"; 4096 int udf_chars, is_osta_typ0, bits; 4097 size_t cnt; 4098 4099 /* allocate temporary unicode-16 buffer */ 4100 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 4101 4102 /* convert utf8 to unicode-16 */ 4103 *raw_name = 0; 4104 inchp = name; 4105 outchp = raw_name; 4106 bits = 8; 4107 for (cnt = name_len, udf_chars = 0; cnt;) { 4108 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 4109 *outchp = wget_utf8(&inchp, &cnt); 4110 if (*outchp > 0xff) 4111 bits=16; 4112 outchp++; 4113 udf_chars++; 4114 } 4115 /* null terminate just in case */ 4116 *outchp++ = 0; 4117 4118 is_osta_typ0 = (chsp->type == 0); 4119 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4120 if (is_osta_typ0) { 4121 udf_chars = udf_CompressUnicode(udf_chars, bits, 4122 (unicode_t *) raw_name, 4123 (byte *) result); 4124 } else { 4125 printf("unix to udf name: no CHSP0 ?\n"); 4126 /* XXX assume 8bit char length byte latin-1 */ 4127 *result++ = 8; udf_chars = 1; 4128 strncpy(result, name + 1, name_len); 4129 udf_chars += name_len; 4130 } 4131 *result_len = udf_chars; 4132 free(raw_name, M_UDFTEMP); 4133 } 4134 4135 /* --------------------------------------------------------------------- */ 4136 4137 void 4138 udf_timestamp_to_timespec(struct udf_mount *ump, 4139 struct timestamp *timestamp, 4140 struct timespec *timespec) 4141 { 4142 struct clock_ymdhms ymdhms; 4143 uint32_t usecs, secs, nsecs; 4144 uint16_t tz; 4145 4146 /* fill in ymdhms structure from timestamp */ 4147 memset(&ymdhms, 0, sizeof(ymdhms)); 4148 ymdhms.dt_year = udf_rw16(timestamp->year); 4149 ymdhms.dt_mon = timestamp->month; 4150 ymdhms.dt_day = timestamp->day; 4151 ymdhms.dt_wday = 0; /* ? */ 4152 ymdhms.dt_hour = timestamp->hour; 4153 ymdhms.dt_min = timestamp->minute; 4154 ymdhms.dt_sec = timestamp->second; 4155 4156 secs = clock_ymdhms_to_secs(&ymdhms); 4157 usecs = timestamp->usec + 4158 100*timestamp->hund_usec + 10000*timestamp->centisec; 4159 nsecs = usecs * 1000; 4160 4161 /* 4162 * Calculate the time zone. The timezone is 12 bit signed 2's 4163 * compliment, so we gotta do some extra magic to handle it right. 4164 */ 4165 tz = udf_rw16(timestamp->type_tz); 4166 tz &= 0x0fff; /* only lower 12 bits are significant */ 4167 if (tz & 0x0800) /* sign extention */ 4168 tz |= 0xf000; 4169 4170 /* TODO check timezone conversion */ 4171 /* check if we are specified a timezone to convert */ 4172 if (udf_rw16(timestamp->type_tz) & 0x1000) { 4173 if ((int16_t) tz != -2047) 4174 secs -= (int16_t) tz * 60; 4175 } else { 4176 secs -= ump->mount_args.gmtoff; 4177 } 4178 4179 timespec->tv_sec = secs; 4180 timespec->tv_nsec = nsecs; 4181 } 4182 4183 4184 void 4185 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 4186 { 4187 struct clock_ymdhms ymdhms; 4188 uint32_t husec, usec, csec; 4189 4190 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 4191 4192 usec = timespec->tv_nsec / 1000; 4193 husec = usec / 100; 4194 usec -= husec * 100; /* only 0-99 in usec */ 4195 csec = husec / 100; /* only 0-99 in csec */ 4196 husec -= csec * 100; /* only 0-99 in husec */ 4197 4198 /* set method 1 for CUT/GMT */ 4199 timestamp->type_tz = udf_rw16((1<<12) + 0); 4200 timestamp->year = udf_rw16(ymdhms.dt_year); 4201 timestamp->month = ymdhms.dt_mon; 4202 timestamp->day = ymdhms.dt_day; 4203 timestamp->hour = ymdhms.dt_hour; 4204 timestamp->minute = ymdhms.dt_min; 4205 timestamp->second = ymdhms.dt_sec; 4206 timestamp->centisec = csec; 4207 timestamp->hund_usec = husec; 4208 timestamp->usec = usec; 4209 } 4210 4211 /* --------------------------------------------------------------------- */ 4212 4213 /* 4214 * Attribute and filetypes converters with get/set pairs 4215 */ 4216 4217 uint32_t 4218 udf_getaccessmode(struct udf_node *udf_node) 4219 { 4220 struct file_entry *fe = udf_node->fe;; 4221 struct extfile_entry *efe = udf_node->efe; 4222 uint32_t udf_perm, icbftype; 4223 uint32_t mode, ftype; 4224 uint16_t icbflags; 4225 4226 UDF_LOCK_NODE(udf_node, 0); 4227 if (fe) { 4228 udf_perm = udf_rw32(fe->perm); 4229 icbftype = fe->icbtag.file_type; 4230 icbflags = udf_rw16(fe->icbtag.flags); 4231 } else { 4232 assert(udf_node->efe); 4233 udf_perm = udf_rw32(efe->perm); 4234 icbftype = efe->icbtag.file_type; 4235 icbflags = udf_rw16(efe->icbtag.flags); 4236 } 4237 4238 mode = udf_perm_to_unix_mode(udf_perm); 4239 ftype = udf_icb_to_unix_filetype(icbftype); 4240 4241 /* set suid, sgid, sticky from flags in fe/efe */ 4242 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 4243 mode |= S_ISUID; 4244 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 4245 mode |= S_ISGID; 4246 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 4247 mode |= S_ISVTX; 4248 4249 UDF_UNLOCK_NODE(udf_node, 0); 4250 4251 return mode | ftype; 4252 } 4253 4254 4255 void 4256 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 4257 { 4258 struct file_entry *fe = udf_node->fe; 4259 struct extfile_entry *efe = udf_node->efe; 4260 uint32_t udf_perm; 4261 uint16_t icbflags; 4262 4263 UDF_LOCK_NODE(udf_node, 0); 4264 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 4265 if (fe) { 4266 icbflags = udf_rw16(fe->icbtag.flags); 4267 } else { 4268 icbflags = udf_rw16(efe->icbtag.flags); 4269 } 4270 4271 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 4272 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 4273 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 4274 if (mode & S_ISUID) 4275 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 4276 if (mode & S_ISGID) 4277 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 4278 if (mode & S_ISVTX) 4279 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 4280 4281 if (fe) { 4282 fe->perm = udf_rw32(udf_perm); 4283 fe->icbtag.flags = udf_rw16(icbflags); 4284 } else { 4285 efe->perm = udf_rw32(udf_perm); 4286 efe->icbtag.flags = udf_rw16(icbflags); 4287 } 4288 4289 UDF_UNLOCK_NODE(udf_node, 0); 4290 } 4291 4292 4293 void 4294 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 4295 { 4296 struct udf_mount *ump = udf_node->ump; 4297 struct file_entry *fe = udf_node->fe; 4298 struct extfile_entry *efe = udf_node->efe; 4299 uid_t uid; 4300 gid_t gid; 4301 4302 UDF_LOCK_NODE(udf_node, 0); 4303 if (fe) { 4304 uid = (uid_t)udf_rw32(fe->uid); 4305 gid = (gid_t)udf_rw32(fe->gid); 4306 } else { 4307 assert(udf_node->efe); 4308 uid = (uid_t)udf_rw32(efe->uid); 4309 gid = (gid_t)udf_rw32(efe->gid); 4310 } 4311 4312 /* do the uid/gid translation game */ 4313 if (uid == (uid_t) -1) 4314 uid = ump->mount_args.anon_uid; 4315 if (gid == (gid_t) -1) 4316 gid = ump->mount_args.anon_gid; 4317 4318 *uidp = uid; 4319 *gidp = gid; 4320 4321 UDF_UNLOCK_NODE(udf_node, 0); 4322 } 4323 4324 4325 void 4326 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 4327 { 4328 struct udf_mount *ump = udf_node->ump; 4329 struct file_entry *fe = udf_node->fe; 4330 struct extfile_entry *efe = udf_node->efe; 4331 uid_t nobody_uid; 4332 gid_t nobody_gid; 4333 4334 UDF_LOCK_NODE(udf_node, 0); 4335 4336 /* do the uid/gid translation game */ 4337 nobody_uid = ump->mount_args.nobody_uid; 4338 nobody_gid = ump->mount_args.nobody_gid; 4339 if (uid == nobody_uid) 4340 uid = (uid_t) -1; 4341 if (gid == nobody_gid) 4342 gid = (gid_t) -1; 4343 4344 if (fe) { 4345 fe->uid = udf_rw32((uint32_t) uid); 4346 fe->gid = udf_rw32((uint32_t) gid); 4347 } else { 4348 efe->uid = udf_rw32((uint32_t) uid); 4349 efe->gid = udf_rw32((uint32_t) gid); 4350 } 4351 4352 UDF_UNLOCK_NODE(udf_node, 0); 4353 } 4354 4355 4356 /* --------------------------------------------------------------------- */ 4357 4358 4359 static int 4360 dirhash_fill(struct udf_node *dir_node) 4361 { 4362 struct vnode *dvp = dir_node->vnode; 4363 struct dirhash *dirh; 4364 struct file_entry *fe = dir_node->fe; 4365 struct extfile_entry *efe = dir_node->efe; 4366 struct fileid_desc *fid; 4367 struct dirent *dirent; 4368 uint64_t file_size, pre_diroffset, diroffset; 4369 uint32_t lb_size; 4370 int error; 4371 4372 /* make sure we have a dirhash to work on */ 4373 dirh = dir_node->dir_hash; 4374 KASSERT(dirh); 4375 KASSERT(dirh->refcnt > 0); 4376 4377 if (dirh->flags & DIRH_BROKEN) 4378 return EIO; 4379 if (dirh->flags & DIRH_COMPLETE) 4380 return 0; 4381 4382 /* make sure we have a clean dirhash to add to */ 4383 dirhash_purge_entries(dirh); 4384 4385 /* get directory filesize */ 4386 if (fe) { 4387 file_size = udf_rw64(fe->inf_len); 4388 } else { 4389 assert(efe); 4390 file_size = udf_rw64(efe->inf_len); 4391 } 4392 4393 /* allocate temporary space for fid */ 4394 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4395 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4396 4397 /* allocate temporary space for dirent */ 4398 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4399 4400 error = 0; 4401 diroffset = 0; 4402 while (diroffset < file_size) { 4403 /* transfer a new fid/dirent */ 4404 pre_diroffset = diroffset; 4405 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4406 if (error) { 4407 /* TODO what to do? continue but not add? */ 4408 dirh->flags |= DIRH_BROKEN; 4409 dirhash_purge_entries(dirh); 4410 break; 4411 } 4412 4413 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4414 /* register deleted extent for reuse */ 4415 dirhash_enter_freed(dirh, pre_diroffset, 4416 udf_fidsize(fid)); 4417 } else { 4418 /* append to the dirhash */ 4419 dirhash_enter(dirh, dirent, pre_diroffset, 4420 udf_fidsize(fid), 0); 4421 } 4422 } 4423 dirh->flags |= DIRH_COMPLETE; 4424 4425 free(fid, M_UDFTEMP); 4426 free(dirent, M_UDFTEMP); 4427 4428 return error; 4429 } 4430 4431 4432 /* --------------------------------------------------------------------- */ 4433 4434 /* 4435 * Directory read and manipulation functions. 4436 * 4437 */ 4438 4439 int 4440 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4441 struct long_ad *icb_loc, int *found) 4442 { 4443 struct udf_node *dir_node = VTOI(vp); 4444 struct dirhash *dirh; 4445 struct dirhash_entry *dirh_ep; 4446 struct fileid_desc *fid; 4447 struct dirent *dirent; 4448 uint64_t diroffset; 4449 uint32_t lb_size; 4450 int hit, error; 4451 4452 /* set default return */ 4453 *found = 0; 4454 4455 /* get our dirhash and make sure its read in */ 4456 dirhash_get(&dir_node->dir_hash); 4457 error = dirhash_fill(dir_node); 4458 if (error) { 4459 dirhash_put(dir_node->dir_hash); 4460 return error; 4461 } 4462 dirh = dir_node->dir_hash; 4463 4464 /* allocate temporary space for fid */ 4465 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4466 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4467 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4468 4469 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4470 namelen, namelen, name)); 4471 4472 /* search our dirhash hits */ 4473 memset(icb_loc, 0, sizeof(*icb_loc)); 4474 dirh_ep = NULL; 4475 for (;;) { 4476 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4477 /* if no hit, abort the search */ 4478 if (!hit) 4479 break; 4480 4481 /* check this hit */ 4482 diroffset = dirh_ep->offset; 4483 4484 /* transfer a new fid/dirent */ 4485 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4486 if (error) 4487 break; 4488 4489 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4490 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4491 4492 /* see if its our entry */ 4493 KASSERT(dirent->d_namlen == namelen); 4494 if (strncmp(dirent->d_name, name, namelen) == 0) { 4495 *found = 1; 4496 *icb_loc = fid->icb; 4497 break; 4498 } 4499 } 4500 free(fid, M_UDFTEMP); 4501 free(dirent, M_UDFTEMP); 4502 4503 dirhash_put(dir_node->dir_hash); 4504 4505 return error; 4506 } 4507 4508 /* --------------------------------------------------------------------- */ 4509 4510 static int 4511 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4512 struct long_ad *node_icb, struct long_ad *parent_icb, 4513 uint64_t parent_unique_id) 4514 { 4515 struct timespec now; 4516 struct icb_tag *icb; 4517 struct filetimes_extattr_entry *ft_extattr; 4518 uint64_t unique_id; 4519 uint32_t fidsize, lb_num; 4520 uint8_t *bpos; 4521 int crclen, attrlen; 4522 4523 lb_num = udf_rw32(node_icb->loc.lb_num); 4524 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4525 icb = &fe->icbtag; 4526 4527 /* 4528 * Always use strategy type 4 unless on WORM wich we don't support 4529 * (yet). Fill in defaults and set for internal allocation of data. 4530 */ 4531 icb->strat_type = udf_rw16(4); 4532 icb->max_num_entries = udf_rw16(1); 4533 icb->file_type = file_type; /* 8 bit */ 4534 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4535 4536 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4537 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4538 4539 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4540 4541 vfs_timestamp(&now); 4542 udf_timespec_to_timestamp(&now, &fe->atime); 4543 udf_timespec_to_timestamp(&now, &fe->attrtime); 4544 udf_timespec_to_timestamp(&now, &fe->mtime); 4545 4546 udf_set_regid(&fe->imp_id, IMPL_NAME); 4547 udf_add_impl_regid(ump, &fe->imp_id); 4548 4549 unique_id = udf_advance_uniqueid(ump); 4550 fe->unique_id = udf_rw64(unique_id); 4551 fe->l_ea = udf_rw32(0); 4552 4553 /* create extended attribute to record our creation time */ 4554 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4555 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4556 memset(ft_extattr, 0, attrlen); 4557 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4558 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4559 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4560 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4561 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4562 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4563 4564 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4565 (struct extattr_entry *) ft_extattr); 4566 free(ft_extattr, M_UDFTEMP); 4567 4568 /* if its a directory, create '..' */ 4569 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4570 fidsize = 0; 4571 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4572 fidsize = udf_create_parentfid(ump, 4573 (struct fileid_desc *) bpos, parent_icb, 4574 parent_unique_id); 4575 } 4576 4577 /* record fidlength information */ 4578 fe->inf_len = udf_rw64(fidsize); 4579 fe->l_ad = udf_rw32(fidsize); 4580 fe->logblks_rec = udf_rw64(0); /* intern */ 4581 4582 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4583 crclen += udf_rw32(fe->l_ea) + fidsize; 4584 fe->tag.desc_crc_len = udf_rw16(crclen); 4585 4586 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4587 4588 return fidsize; 4589 } 4590 4591 /* --------------------------------------------------------------------- */ 4592 4593 static int 4594 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4595 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4596 uint64_t parent_unique_id) 4597 { 4598 struct timespec now; 4599 struct icb_tag *icb; 4600 uint64_t unique_id; 4601 uint32_t fidsize, lb_num; 4602 uint8_t *bpos; 4603 int crclen; 4604 4605 lb_num = udf_rw32(node_icb->loc.lb_num); 4606 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4607 icb = &efe->icbtag; 4608 4609 /* 4610 * Always use strategy type 4 unless on WORM wich we don't support 4611 * (yet). Fill in defaults and set for internal allocation of data. 4612 */ 4613 icb->strat_type = udf_rw16(4); 4614 icb->max_num_entries = udf_rw16(1); 4615 icb->file_type = file_type; /* 8 bit */ 4616 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4617 4618 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4619 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4620 4621 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4622 4623 vfs_timestamp(&now); 4624 udf_timespec_to_timestamp(&now, &efe->ctime); 4625 udf_timespec_to_timestamp(&now, &efe->atime); 4626 udf_timespec_to_timestamp(&now, &efe->attrtime); 4627 udf_timespec_to_timestamp(&now, &efe->mtime); 4628 4629 udf_set_regid(&efe->imp_id, IMPL_NAME); 4630 udf_add_impl_regid(ump, &efe->imp_id); 4631 4632 unique_id = udf_advance_uniqueid(ump); 4633 efe->unique_id = udf_rw64(unique_id); 4634 efe->l_ea = udf_rw32(0); 4635 4636 /* if its a directory, create '..' */ 4637 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4638 fidsize = 0; 4639 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4640 fidsize = udf_create_parentfid(ump, 4641 (struct fileid_desc *) bpos, parent_icb, 4642 parent_unique_id); 4643 } 4644 4645 /* record fidlength information */ 4646 efe->obj_size = udf_rw64(fidsize); 4647 efe->inf_len = udf_rw64(fidsize); 4648 efe->l_ad = udf_rw32(fidsize); 4649 efe->logblks_rec = udf_rw64(0); /* intern */ 4650 4651 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4652 crclen += udf_rw32(efe->l_ea) + fidsize; 4653 efe->tag.desc_crc_len = udf_rw16(crclen); 4654 4655 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4656 4657 return fidsize; 4658 } 4659 4660 /* --------------------------------------------------------------------- */ 4661 4662 int 4663 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4664 struct udf_node *udf_node, struct componentname *cnp) 4665 { 4666 struct vnode *dvp = dir_node->vnode; 4667 struct dirhash *dirh; 4668 struct dirhash_entry *dirh_ep; 4669 struct file_entry *fe = dir_node->fe; 4670 struct extfile_entry *efe = dir_node->efe; 4671 struct fileid_desc *fid; 4672 struct dirent *dirent; 4673 uint64_t file_size, diroffset; 4674 uint32_t lb_size, fidsize; 4675 int found, error; 4676 char const *name = cnp->cn_nameptr; 4677 int namelen = cnp->cn_namelen; 4678 int hit, refcnt; 4679 4680 /* get our dirhash and make sure its read in */ 4681 dirhash_get(&dir_node->dir_hash); 4682 error = dirhash_fill(dir_node); 4683 if (error) { 4684 dirhash_put(dir_node->dir_hash); 4685 return error; 4686 } 4687 dirh = dir_node->dir_hash; 4688 4689 /* get directory filesize */ 4690 if (fe) { 4691 file_size = udf_rw64(fe->inf_len); 4692 } else { 4693 assert(efe); 4694 file_size = udf_rw64(efe->inf_len); 4695 } 4696 4697 /* allocate temporary space for fid */ 4698 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4699 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4700 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4701 4702 /* search our dirhash hits */ 4703 found = 0; 4704 dirh_ep = NULL; 4705 for (;;) { 4706 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4707 /* if no hit, abort the search */ 4708 if (!hit) 4709 break; 4710 4711 /* check this hit */ 4712 diroffset = dirh_ep->offset; 4713 4714 /* transfer a new fid/dirent */ 4715 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4716 if (error) 4717 break; 4718 4719 /* see if its our entry */ 4720 KASSERT(dirent->d_namlen == namelen); 4721 if (strncmp(dirent->d_name, name, namelen) == 0) { 4722 found = 1; 4723 break; 4724 } 4725 } 4726 4727 if (!found) 4728 error = ENOENT; 4729 if (error) 4730 goto error_out; 4731 4732 /* mark deleted */ 4733 fid->file_char |= UDF_FILE_CHAR_DEL; 4734 #ifdef UDF_COMPLETE_DELETE 4735 memset(&fid->icb, 0, sizeof(fid->icb)); 4736 #endif 4737 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4738 4739 /* get size of fid and compensate for the read_fid_stream advance */ 4740 fidsize = udf_fidsize(fid); 4741 diroffset -= fidsize; 4742 4743 /* write out */ 4744 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4745 fid, fidsize, diroffset, 4746 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4747 FSCRED, NULL, NULL); 4748 if (error) 4749 goto error_out; 4750 4751 /* get reference count of attached node */ 4752 if (udf_node->fe) { 4753 refcnt = udf_rw16(udf_node->fe->link_cnt); 4754 } else { 4755 KASSERT(udf_node->efe); 4756 refcnt = udf_rw16(udf_node->efe->link_cnt); 4757 } 4758 #ifdef UDF_COMPLETE_DELETE 4759 /* substract reference counter in attached node */ 4760 refcnt -= 1; 4761 if (udf_node->fe) { 4762 udf_node->fe->link_cnt = udf_rw16(refcnt); 4763 } else { 4764 udf_node->efe->link_cnt = udf_rw16(refcnt); 4765 } 4766 4767 /* prevent writeout when refcnt == 0 */ 4768 if (refcnt == 0) 4769 udf_node->i_flags |= IN_DELETED; 4770 4771 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4772 int drefcnt; 4773 4774 /* substract reference counter in directory node */ 4775 /* note subtract 2 (?) for its was also backreferenced */ 4776 if (dir_node->fe) { 4777 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4778 drefcnt -= 1; 4779 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4780 } else { 4781 KASSERT(dir_node->efe); 4782 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4783 drefcnt -= 1; 4784 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4785 } 4786 } 4787 4788 udf_node->i_flags |= IN_MODIFIED; 4789 dir_node->i_flags |= IN_MODIFIED; 4790 #endif 4791 /* if it is/was a hardlink adjust the file count */ 4792 if (refcnt > 0) 4793 udf_adjust_filecount(udf_node, -1); 4794 4795 /* remove from the dirhash */ 4796 dirhash_remove(dirh, dirent, diroffset, 4797 udf_fidsize(fid)); 4798 4799 error_out: 4800 free(fid, M_UDFTEMP); 4801 free(dirent, M_UDFTEMP); 4802 4803 dirhash_put(dir_node->dir_hash); 4804 4805 return error; 4806 } 4807 4808 /* --------------------------------------------------------------------- */ 4809 4810 /* 4811 * We are not allowed to split the fid tag itself over an logical block so 4812 * check the space remaining in the logical block. 4813 * 4814 * We try to select the smallest candidate for recycling or when none is 4815 * found, append a new one at the end of the directory. 4816 */ 4817 4818 int 4819 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4820 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4821 { 4822 struct vnode *dvp = dir_node->vnode; 4823 struct dirhash *dirh; 4824 struct dirhash_entry *dirh_ep; 4825 struct fileid_desc *fid; 4826 struct icb_tag *icbtag; 4827 struct charspec osta_charspec; 4828 struct dirent dirent; 4829 uint64_t unique_id, dir_size; 4830 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4831 uint32_t chosen_size, chosen_size_diff; 4832 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4833 int file_char, refcnt, icbflags, addr_type, hit, error; 4834 4835 /* get our dirhash and make sure its read in */ 4836 dirhash_get(&dir_node->dir_hash); 4837 error = dirhash_fill(dir_node); 4838 if (error) { 4839 dirhash_put(dir_node->dir_hash); 4840 return error; 4841 } 4842 dirh = dir_node->dir_hash; 4843 4844 /* get info */ 4845 lb_size = udf_rw32(ump->logical_vol->lb_size); 4846 udf_osta_charset(&osta_charspec); 4847 4848 if (dir_node->fe) { 4849 dir_size = udf_rw64(dir_node->fe->inf_len); 4850 icbtag = &dir_node->fe->icbtag; 4851 } else { 4852 dir_size = udf_rw64(dir_node->efe->inf_len); 4853 icbtag = &dir_node->efe->icbtag; 4854 } 4855 4856 icbflags = udf_rw16(icbtag->flags); 4857 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4858 4859 if (udf_node->fe) { 4860 unique_id = udf_rw64(udf_node->fe->unique_id); 4861 refcnt = udf_rw16(udf_node->fe->link_cnt); 4862 } else { 4863 unique_id = udf_rw64(udf_node->efe->unique_id); 4864 refcnt = udf_rw16(udf_node->efe->link_cnt); 4865 } 4866 4867 if (refcnt > 0) { 4868 unique_id = udf_advance_uniqueid(ump); 4869 udf_adjust_filecount(udf_node, 1); 4870 } 4871 4872 /* determine file characteristics */ 4873 file_char = 0; /* visible non deleted file and not stream metadata */ 4874 if (vap->va_type == VDIR) 4875 file_char = UDF_FILE_CHAR_DIR; 4876 4877 /* malloc scrap buffer */ 4878 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4879 bzero(fid, lb_size); 4880 4881 /* calculate _minimum_ fid size */ 4882 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4883 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4884 fidsize = UDF_FID_SIZE + fid->l_fi; 4885 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4886 4887 /* find position that will fit the FID */ 4888 chosen_fid_pos = dir_size; 4889 chosen_size = 0; 4890 chosen_size_diff = UINT_MAX; 4891 4892 /* shut up gcc */ 4893 dirent.d_namlen = 0; 4894 4895 /* search our dirhash hits */ 4896 error = 0; 4897 dirh_ep = NULL; 4898 for (;;) { 4899 hit = dirhash_lookup_freed(dirh, fidsize, &dirh_ep); 4900 /* if no hit, abort the search */ 4901 if (!hit) 4902 break; 4903 4904 /* check this hit for size */ 4905 this_fidsize = dirh_ep->entry_size; 4906 4907 /* check this hit */ 4908 fid_pos = dirh_ep->offset; 4909 end_fid_pos = fid_pos + this_fidsize; 4910 size_diff = this_fidsize - fidsize; 4911 lb_rest = lb_size - (end_fid_pos % lb_size); 4912 4913 #ifndef UDF_COMPLETE_DELETE 4914 /* transfer a new fid/dirent */ 4915 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4916 if (error) 4917 goto error_out; 4918 4919 /* only reuse entries that are wiped */ 4920 /* check if the len + loc are marked zero */ 4921 if (udf_rw32(fid->icb.len != 0)) 4922 continue; 4923 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4924 continue; 4925 if (udf_rw16(fid->icb.loc.part_num != 0)) 4926 continue; 4927 #endif /* UDF_COMPLETE_DELETE */ 4928 4929 /* select if not splitting the tag and its smaller */ 4930 if ((size_diff >= 0) && 4931 (size_diff < chosen_size_diff) && 4932 (lb_rest >= sizeof(struct desc_tag))) 4933 { 4934 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4935 if ((size_diff == 0) || (size_diff >= 32)) { 4936 chosen_fid_pos = fid_pos; 4937 chosen_size = this_fidsize; 4938 chosen_size_diff = size_diff; 4939 } 4940 } 4941 } 4942 4943 4944 /* extend directory if no other candidate found */ 4945 if (chosen_size == 0) { 4946 chosen_fid_pos = dir_size; 4947 chosen_size = fidsize; 4948 chosen_size_diff = 0; 4949 4950 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4951 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4952 /* pre-grow directory to see if we're to switch */ 4953 udf_grow_node(dir_node, dir_size + chosen_size); 4954 4955 icbflags = udf_rw16(icbtag->flags); 4956 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4957 } 4958 4959 /* make sure the next fid desc_tag won't be splitted */ 4960 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4961 end_fid_pos = chosen_fid_pos + chosen_size; 4962 lb_rest = lb_size - (end_fid_pos % lb_size); 4963 4964 /* pad with implementation use regid if needed */ 4965 if (lb_rest < sizeof(struct desc_tag)) 4966 chosen_size += 32; 4967 } 4968 } 4969 chosen_size_diff = chosen_size - fidsize; 4970 4971 /* populate the FID */ 4972 memset(fid, 0, lb_size); 4973 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4974 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4975 fid->file_char = file_char; 4976 fid->icb = udf_node->loc; 4977 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4978 fid->l_iu = udf_rw16(0); 4979 4980 if (chosen_size > fidsize) { 4981 /* insert implementation-use regid to space it correctly */ 4982 fid->l_iu = udf_rw16(chosen_size_diff); 4983 4984 /* set implementation use */ 4985 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4986 udf_add_impl_regid(ump, (struct regid *) fid->data); 4987 } 4988 4989 /* fill in name */ 4990 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4991 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4992 4993 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4994 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4995 4996 /* writeout FID/update parent directory */ 4997 error = vn_rdwr(UIO_WRITE, dvp, 4998 fid, chosen_size, chosen_fid_pos, 4999 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 5000 FSCRED, NULL, NULL); 5001 5002 if (error) 5003 goto error_out; 5004 5005 /* add reference counter in attached node */ 5006 if (udf_node->fe) { 5007 refcnt = udf_rw16(udf_node->fe->link_cnt); 5008 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 5009 } else { 5010 KASSERT(udf_node->efe); 5011 refcnt = udf_rw16(udf_node->efe->link_cnt); 5012 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 5013 } 5014 5015 /* mark not deleted if it was... just in case, but do warn */ 5016 if (udf_node->i_flags & IN_DELETED) { 5017 printf("udf: warning, marking a file undeleted\n"); 5018 udf_node->i_flags &= ~IN_DELETED; 5019 } 5020 5021 if (file_char & UDF_FILE_CHAR_DIR) { 5022 /* add reference counter in directory node for '..' */ 5023 if (dir_node->fe) { 5024 refcnt = udf_rw16(dir_node->fe->link_cnt); 5025 refcnt++; 5026 dir_node->fe->link_cnt = udf_rw16(refcnt); 5027 } else { 5028 KASSERT(dir_node->efe); 5029 refcnt = udf_rw16(dir_node->efe->link_cnt); 5030 refcnt++; 5031 dir_node->efe->link_cnt = udf_rw16(refcnt); 5032 } 5033 } 5034 5035 /* append to the dirhash */ 5036 dirent.d_namlen = cnp->cn_namelen; 5037 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 5038 dirhash_enter(dirh, &dirent, chosen_fid_pos, 5039 udf_fidsize(fid), 1); 5040 5041 /* note updates */ 5042 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 5043 /* VN_KNOTE(udf_node, ...) */ 5044 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 5045 5046 error_out: 5047 free(fid, M_TEMP); 5048 5049 dirhash_put(dir_node->dir_hash); 5050 5051 return error; 5052 } 5053 5054 /* --------------------------------------------------------------------- */ 5055 5056 /* 5057 * Each node can have an attached streamdir node though not recursively. These 5058 * are otherwise known as named substreams/named extended attributes that have 5059 * no size limitations. 5060 * 5061 * `Normal' extended attributes are indicated with a number and are recorded 5062 * in either the fe/efe descriptor itself for small descriptors or recorded in 5063 * the attached extended attribute file. Since these spaces can get 5064 * fragmented, care ought to be taken. 5065 * 5066 * Since the size of the space reserved for allocation descriptors is limited, 5067 * there is a mechanim provided for extending this space; this is done by a 5068 * special extent to allow schrinking of the allocations without breaking the 5069 * linkage to the allocation extent descriptor. 5070 */ 5071 5072 int 5073 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 5074 struct udf_node **udf_noderes) 5075 { 5076 union dscrptr *dscr; 5077 struct udf_node *udf_node; 5078 struct vnode *nvp; 5079 struct long_ad icb_loc, last_fe_icb_loc; 5080 uint64_t file_size; 5081 uint32_t lb_size, sector, dummy; 5082 uint8_t *file_data; 5083 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 5084 int slot, eof, error; 5085 5086 DPRINTF(NODE, ("udf_get_node called\n")); 5087 *udf_noderes = udf_node = NULL; 5088 5089 /* lock to disallow simultanious creation of same udf_node */ 5090 mutex_enter(&ump->get_node_lock); 5091 5092 DPRINTF(NODE, ("\tlookup in hash table\n")); 5093 /* lookup in hash table */ 5094 assert(ump); 5095 assert(node_icb_loc); 5096 udf_node = udf_hash_lookup(ump, node_icb_loc); 5097 if (udf_node) { 5098 DPRINTF(NODE, ("\tgot it from the hash!\n")); 5099 /* vnode is returned locked */ 5100 *udf_noderes = udf_node; 5101 mutex_exit(&ump->get_node_lock); 5102 return 0; 5103 } 5104 5105 /* garbage check: translate udf_node_icb_loc to sectornr */ 5106 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 5107 if (error) { 5108 /* no use, this will fail anyway */ 5109 mutex_exit(&ump->get_node_lock); 5110 return EINVAL; 5111 } 5112 5113 /* build udf_node (do initialise!) */ 5114 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5115 memset(udf_node, 0, sizeof(struct udf_node)); 5116 5117 DPRINTF(NODE, ("\tget new vnode\n")); 5118 /* give it a vnode */ 5119 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 5120 if (error) { 5121 pool_put(&udf_node_pool, udf_node); 5122 mutex_exit(&ump->get_node_lock); 5123 return error; 5124 } 5125 5126 /* always return locked vnode */ 5127 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 5128 /* recycle vnode and unlock; simultanious will fail too */ 5129 ungetnewvnode(nvp); 5130 mutex_exit(&ump->get_node_lock); 5131 return error; 5132 } 5133 5134 /* initialise crosslinks, note location of fe/efe for hashing */ 5135 udf_node->ump = ump; 5136 udf_node->vnode = nvp; 5137 nvp->v_data = udf_node; 5138 udf_node->loc = *node_icb_loc; 5139 udf_node->lockf = 0; 5140 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5141 cv_init(&udf_node->node_lock, "udf_nlk"); 5142 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 5143 udf_node->outstanding_bufs = 0; 5144 udf_node->outstanding_nodedscr = 0; 5145 5146 /* check if we're fetching the root */ 5147 if (ump->fileset_desc) 5148 if (memcmp(&udf_node->loc, &ump->fileset_desc->rootdir_icb, 5149 sizeof(struct long_ad)) == 0) 5150 nvp->v_vflag |= VV_ROOT; 5151 5152 /* insert into the hash lookup */ 5153 udf_register_node(udf_node); 5154 5155 /* safe to unlock, the entry is in the hash table, vnode is locked */ 5156 mutex_exit(&ump->get_node_lock); 5157 5158 icb_loc = *node_icb_loc; 5159 needs_indirect = 0; 5160 strat4096 = 0; 5161 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 5162 file_size = 0; 5163 file_data = NULL; 5164 lb_size = udf_rw32(ump->logical_vol->lb_size); 5165 5166 DPRINTF(NODE, ("\tstart reading descriptors\n")); 5167 do { 5168 /* try to read in fe/efe */ 5169 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5170 5171 /* blank sector marks end of sequence, check this */ 5172 if ((dscr == NULL) && (!strat4096)) 5173 error = ENOENT; 5174 5175 /* break if read error or blank sector */ 5176 if (error || (dscr == NULL)) 5177 break; 5178 5179 /* process descriptor based on the descriptor type */ 5180 dscr_type = udf_rw16(dscr->tag.id); 5181 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 5182 5183 /* if dealing with an indirect entry, follow the link */ 5184 if (dscr_type == TAGID_INDIRECTENTRY) { 5185 needs_indirect = 0; 5186 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5187 icb_loc = dscr->inde.indirect_icb; 5188 continue; 5189 } 5190 5191 /* only file entries and extended file entries allowed here */ 5192 if ((dscr_type != TAGID_FENTRY) && 5193 (dscr_type != TAGID_EXTFENTRY)) { 5194 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5195 error = ENOENT; 5196 break; 5197 } 5198 5199 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 5200 5201 /* choose this one */ 5202 last_fe_icb_loc = icb_loc; 5203 5204 /* record and process/update (ext)fentry */ 5205 file_data = NULL; 5206 if (dscr_type == TAGID_FENTRY) { 5207 if (udf_node->fe) 5208 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5209 udf_node->fe); 5210 udf_node->fe = &dscr->fe; 5211 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 5212 udf_file_type = udf_node->fe->icbtag.file_type; 5213 file_size = udf_rw64(udf_node->fe->inf_len); 5214 file_data = udf_node->fe->data; 5215 } else { 5216 if (udf_node->efe) 5217 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5218 udf_node->efe); 5219 udf_node->efe = &dscr->efe; 5220 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 5221 udf_file_type = udf_node->efe->icbtag.file_type; 5222 file_size = udf_rw64(udf_node->efe->inf_len); 5223 file_data = udf_node->efe->data; 5224 } 5225 5226 /* check recording strategy (structure) */ 5227 5228 /* 5229 * Strategy 4096 is a daisy linked chain terminating with an 5230 * unrecorded sector or a TERM descriptor. The next 5231 * descriptor is to be found in the sector that follows the 5232 * current sector. 5233 */ 5234 if (strat == 4096) { 5235 strat4096 = 1; 5236 needs_indirect = 1; 5237 5238 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 5239 } 5240 5241 /* 5242 * Strategy 4 is the normal strategy and terminates, but if 5243 * we're in strategy 4096, we can't have strategy 4 mixed in 5244 */ 5245 5246 if (strat == 4) { 5247 if (strat4096) { 5248 error = EINVAL; 5249 break; 5250 } 5251 break; /* done */ 5252 } 5253 } while (!error); 5254 5255 /* first round of cleanup code */ 5256 if (error) { 5257 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 5258 /* recycle udf_node */ 5259 udf_dispose_node(udf_node); 5260 5261 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5262 nvp->v_data = NULL; 5263 ungetnewvnode(nvp); 5264 5265 return EINVAL; /* error code ok? */ 5266 } 5267 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 5268 5269 /* assert no references to dscr anymore beyong this point */ 5270 assert((udf_node->fe) || (udf_node->efe)); 5271 dscr = NULL; 5272 5273 /* 5274 * Remember where to record an updated version of the descriptor. If 5275 * there is a sequence of indirect entries, icb_loc will have been 5276 * updated. Its the write disipline to allocate new space and to make 5277 * sure the chain is maintained. 5278 * 5279 * `needs_indirect' flags if the next location is to be filled with 5280 * with an indirect entry. 5281 */ 5282 udf_node->write_loc = icb_loc; 5283 udf_node->needs_indirect = needs_indirect; 5284 5285 /* 5286 * Go trough all allocations extents of this descriptor and when 5287 * encountering a redirect read in the allocation extension. These are 5288 * daisy-chained. 5289 */ 5290 UDF_LOCK_NODE(udf_node, 0); 5291 udf_node->num_extensions = 0; 5292 5293 error = 0; 5294 slot = 0; 5295 for (;;) { 5296 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 5297 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 5298 "lb_num = %d, part = %d\n", slot, eof, 5299 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 5300 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 5301 udf_rw32(icb_loc.loc.lb_num), 5302 udf_rw16(icb_loc.loc.part_num))); 5303 if (eof) 5304 break; 5305 slot++; 5306 5307 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 5308 continue; 5309 5310 DPRINTF(NODE, ("\tgot redirect extent\n")); 5311 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 5312 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 5313 "too many allocation extensions on " 5314 "udf_node\n")); 5315 error = EINVAL; 5316 break; 5317 } 5318 5319 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 5320 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 5321 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 5322 "extension size in udf_node\n")); 5323 error = EINVAL; 5324 break; 5325 } 5326 5327 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 5328 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 5329 /* load in allocation extent */ 5330 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5331 if (error || (dscr == NULL)) 5332 break; 5333 5334 /* process read-in descriptor */ 5335 dscr_type = udf_rw16(dscr->tag.id); 5336 5337 if (dscr_type != TAGID_ALLOCEXTENT) { 5338 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5339 error = ENOENT; 5340 break; 5341 } 5342 5343 DPRINTF(NODE, ("\trecording redirect extent\n")); 5344 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5345 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5346 5347 udf_node->num_extensions++; 5348 5349 } /* while */ 5350 UDF_UNLOCK_NODE(udf_node, 0); 5351 5352 /* second round of cleanup code */ 5353 if (error) { 5354 /* recycle udf_node */ 5355 udf_dispose_node(udf_node); 5356 5357 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5358 nvp->v_data = NULL; 5359 ungetnewvnode(nvp); 5360 5361 return EINVAL; /* error code ok? */ 5362 } 5363 5364 DPRINTF(NODE, ("\tnode read in fine\n")); 5365 5366 /* 5367 * Translate UDF filetypes into vnode types. 5368 * 5369 * Systemfiles like the meta main and mirror files are not treated as 5370 * normal files, so we type them as having no type. UDF dictates that 5371 * they are not allowed to be visible. 5372 */ 5373 5374 switch (udf_file_type) { 5375 case UDF_ICB_FILETYPE_DIRECTORY : 5376 case UDF_ICB_FILETYPE_STREAMDIR : 5377 nvp->v_type = VDIR; 5378 break; 5379 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5380 nvp->v_type = VBLK; 5381 break; 5382 case UDF_ICB_FILETYPE_CHARDEVICE : 5383 nvp->v_type = VCHR; 5384 break; 5385 case UDF_ICB_FILETYPE_SOCKET : 5386 nvp->v_type = VSOCK; 5387 break; 5388 case UDF_ICB_FILETYPE_FIFO : 5389 nvp->v_type = VFIFO; 5390 break; 5391 case UDF_ICB_FILETYPE_SYMLINK : 5392 nvp->v_type = VLNK; 5393 break; 5394 case UDF_ICB_FILETYPE_VAT : 5395 case UDF_ICB_FILETYPE_META_MAIN : 5396 case UDF_ICB_FILETYPE_META_MIRROR : 5397 nvp->v_type = VNON; 5398 break; 5399 case UDF_ICB_FILETYPE_RANDOMACCESS : 5400 case UDF_ICB_FILETYPE_REALTIME : 5401 nvp->v_type = VREG; 5402 break; 5403 default: 5404 /* YIKES, something else */ 5405 nvp->v_type = VNON; 5406 } 5407 5408 /* TODO specfs, fifofs etc etc. vnops setting */ 5409 5410 /* don't forget to set vnode's v_size */ 5411 uvm_vnp_setsize(nvp, file_size); 5412 5413 /* TODO ext attr and streamdir udf_nodes */ 5414 5415 *udf_noderes = udf_node; 5416 5417 return 0; 5418 } 5419 5420 /* --------------------------------------------------------------------- */ 5421 5422 int 5423 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5424 { 5425 union dscrptr *dscr; 5426 struct long_ad *loc; 5427 int extnr, flags, error; 5428 5429 DPRINTF(NODE, ("udf_writeout_node called\n")); 5430 5431 KASSERT(udf_node->outstanding_bufs == 0); 5432 KASSERT(udf_node->outstanding_nodedscr == 0); 5433 5434 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5435 5436 if (udf_node->i_flags & IN_DELETED) { 5437 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5438 return 0; 5439 } 5440 5441 /* lock node */ 5442 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5443 UDF_LOCK_NODE(udf_node, flags); 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 = 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 (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 21:09:56 GMT 2025