udf_subr.c revision 1.66
1 /* $NetBSD: udf_subr.c,v 1.66 2008/07/22 19:06:55 reinoud Exp $ */ 2 3 /* 4 * Copyright (c) 2006, 2008 Reinoud Zandijk 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 30 #include <sys/cdefs.h> 31 #ifndef lint 32 __KERNEL_RCSID(0, "$NetBSD: udf_subr.c,v 1.66 2008/07/22 19:06:55 reinoud Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_quota.h" 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <sys/namei.h> 45 #include <sys/proc.h> 46 #include <sys/kernel.h> 47 #include <sys/vnode.h> 48 #include <miscfs/genfs/genfs_node.h> 49 #include <sys/mount.h> 50 #include <sys/buf.h> 51 #include <sys/file.h> 52 #include <sys/device.h> 53 #include <sys/disklabel.h> 54 #include <sys/ioctl.h> 55 #include <sys/malloc.h> 56 #include <sys/dirent.h> 57 #include <sys/stat.h> 58 #include <sys/conf.h> 59 #include <sys/kauth.h> 60 #include <fs/unicode.h> 61 #include <dev/clock_subr.h> 62 63 #include <fs/udf/ecma167-udf.h> 64 #include <fs/udf/udf_mount.h> 65 66 #if defined(_KERNEL_OPT) 67 #include "opt_udf.h" 68 #endif 69 70 #include "udf.h" 71 #include "udf_subr.h" 72 #include "udf_bswap.h" 73 74 75 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 76 77 #define UDF_SET_SYSTEMFILE(vp) \ 78 /* XXXAD Is the vnode locked? */ \ 79 (vp)->v_vflag |= VV_SYSTEM; \ 80 vref(vp); \ 81 vput(vp); \ 82 83 extern int syncer_maxdelay; /* maximum delay time */ 84 extern int (**udf_vnodeop_p)(void *); 85 86 /* --------------------------------------------------------------------- */ 87 88 //#ifdef DEBUG 89 #if 1 90 91 #if 0 92 static void 93 udf_dumpblob(boid *blob, uint32_t dlen) 94 { 95 int i, j; 96 97 printf("blob = %p\n", blob); 98 printf("dump of %d bytes\n", dlen); 99 100 for (i = 0; i < dlen; i+ = 16) { 101 printf("%04x ", i); 102 for (j = 0; j < 16; j++) { 103 if (i+j < dlen) { 104 printf("%02x ", blob[i+j]); 105 } else { 106 printf(" "); 107 } 108 } 109 for (j = 0; j < 16; j++) { 110 if (i+j < dlen) { 111 if (blob[i+j]>32 && blob[i+j]! = 127) { 112 printf("%c", blob[i+j]); 113 } else { 114 printf("."); 115 } 116 } 117 } 118 printf("\n"); 119 } 120 printf("\n"); 121 Debugger(); 122 } 123 #endif 124 125 static void 126 udf_dump_discinfo(struct udf_mount *ump) 127 { 128 char bits[128]; 129 struct mmc_discinfo *di = &ump->discinfo; 130 131 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 132 return; 133 134 printf("Device/media info :\n"); 135 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 136 printf("\tderived class %d\n", di->mmc_class); 137 printf("\tsector size %d\n", di->sector_size); 138 printf("\tdisc state %d\n", di->disc_state); 139 printf("\tlast ses state %d\n", di->last_session_state); 140 printf("\tbg format state %d\n", di->bg_format_state); 141 printf("\tfrst track %d\n", di->first_track); 142 printf("\tfst on last ses %d\n", di->first_track_last_session); 143 printf("\tlst on last ses %d\n", di->last_track_last_session); 144 printf("\tlink block penalty %d\n", di->link_block_penalty); 145 bitmask_snprintf(di->disc_flags, MMC_DFLAGS_FLAGBITS, bits, 146 sizeof(bits)); 147 printf("\tdisc flags %s\n", bits); 148 printf("\tdisc id %x\n", di->disc_id); 149 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 150 151 printf("\tnum sessions %d\n", di->num_sessions); 152 printf("\tnum tracks %d\n", di->num_tracks); 153 154 bitmask_snprintf(di->mmc_cur, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 155 printf("\tcapabilities cur %s\n", bits); 156 bitmask_snprintf(di->mmc_cap, MMC_CAP_FLAGBITS, bits, sizeof(bits)); 157 printf("\tcapabilities cap %s\n", bits); 158 } 159 #else 160 #define udf_dump_discinfo(a); 161 #endif 162 163 164 /* --------------------------------------------------------------------- */ 165 166 /* not called often */ 167 int 168 udf_update_discinfo(struct udf_mount *ump) 169 { 170 struct vnode *devvp = ump->devvp; 171 struct partinfo dpart; 172 struct mmc_discinfo *di; 173 int error; 174 175 DPRINTF(VOLUMES, ("read/update disc info\n")); 176 di = &ump->discinfo; 177 memset(di, 0, sizeof(struct mmc_discinfo)); 178 179 /* check if we're on a MMC capable device, i.e. CD/DVD */ 180 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 181 if (error == 0) { 182 udf_dump_discinfo(ump); 183 return 0; 184 } 185 186 /* disc partition support */ 187 error = VOP_IOCTL(devvp, DIOCGPART, &dpart, FREAD, NOCRED); 188 if (error) 189 return ENODEV; 190 191 /* set up a disc info profile for partitions */ 192 di->mmc_profile = 0x01; /* disc type */ 193 di->mmc_class = MMC_CLASS_DISC; 194 di->disc_state = MMC_STATE_CLOSED; 195 di->last_session_state = MMC_STATE_CLOSED; 196 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 197 di->link_block_penalty = 0; 198 199 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 200 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 201 di->mmc_cap = di->mmc_cur; 202 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 203 204 /* TODO problem with last_possible_lba on resizable VND; request */ 205 di->last_possible_lba = dpart.part->p_size; 206 di->sector_size = dpart.disklab->d_secsize; 207 208 di->num_sessions = 1; 209 di->num_tracks = 1; 210 211 di->first_track = 1; 212 di->first_track_last_session = di->last_track_last_session = 1; 213 214 udf_dump_discinfo(ump); 215 return 0; 216 } 217 218 219 int 220 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 221 { 222 struct vnode *devvp = ump->devvp; 223 struct mmc_discinfo *di = &ump->discinfo; 224 int error, class; 225 226 DPRINTF(VOLUMES, ("read track info\n")); 227 228 class = di->mmc_class; 229 if (class != MMC_CLASS_DISC) { 230 /* tracknr specified in struct ti */ 231 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 232 return error; 233 } 234 235 /* disc partition support */ 236 if (ti->tracknr != 1) 237 return EIO; 238 239 /* create fake ti (TODO check for resized vnds) */ 240 ti->sessionnr = 1; 241 242 ti->track_mode = 0; /* XXX */ 243 ti->data_mode = 0; /* XXX */ 244 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 245 246 ti->track_start = 0; 247 ti->packet_size = 1; 248 249 /* TODO support for resizable vnd */ 250 ti->track_size = di->last_possible_lba; 251 ti->next_writable = di->last_possible_lba; 252 ti->last_recorded = ti->next_writable; 253 ti->free_blocks = 0; 254 255 return 0; 256 } 257 258 259 int 260 udf_setup_writeparams(struct udf_mount *ump) 261 { 262 struct mmc_writeparams mmc_writeparams; 263 int error; 264 265 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 266 return 0; 267 268 /* 269 * only CD burning normally needs setting up, but other disc types 270 * might need other settings to be made. The MMC framework will set up 271 * the nessisary recording parameters according to the disc 272 * characteristics read in. Modifications can be made in the discinfo 273 * structure passed to change the nature of the disc. 274 */ 275 276 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 277 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 278 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 279 280 /* 281 * UDF dictates first track to determine track mode for the whole 282 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 283 * To prevent problems with a `reserved' track in front we start with 284 * the 2nd track and if that is not valid, go for the 1st. 285 */ 286 mmc_writeparams.tracknr = 2; 287 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 288 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 289 290 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 291 FKIOCTL, NOCRED); 292 if (error) { 293 mmc_writeparams.tracknr = 1; 294 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 295 &mmc_writeparams, FKIOCTL, NOCRED); 296 } 297 return error; 298 } 299 300 301 int 302 udf_synchronise_caches(struct udf_mount *ump) 303 { 304 struct mmc_op mmc_op; 305 306 DPRINTF(CALL, ("udf_synchronise_caches()\n")); 307 308 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 309 return 0; 310 311 /* discs are done now */ 312 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 313 return 0; 314 315 bzero(&mmc_op, sizeof(struct mmc_op)); 316 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 317 318 /* ignore return code */ 319 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 320 321 return 0; 322 } 323 324 /* --------------------------------------------------------------------- */ 325 326 /* track/session searching for mounting */ 327 int 328 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 329 int *first_tracknr, int *last_tracknr) 330 { 331 struct mmc_trackinfo trackinfo; 332 uint32_t tracknr, start_track, num_tracks; 333 int error; 334 335 /* if negative, sessionnr is relative to last session */ 336 if (args->sessionnr < 0) { 337 args->sessionnr += ump->discinfo.num_sessions; 338 } 339 340 /* sanity */ 341 if (args->sessionnr < 0) 342 args->sessionnr = 0; 343 if (args->sessionnr > ump->discinfo.num_sessions) 344 args->sessionnr = ump->discinfo.num_sessions; 345 346 /* search the tracks for this session, zero session nr indicates last */ 347 if (args->sessionnr == 0) 348 args->sessionnr = ump->discinfo.num_sessions; 349 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 350 args->sessionnr--; 351 352 /* sanity again */ 353 if (args->sessionnr < 0) 354 args->sessionnr = 0; 355 356 /* search the first and last track of the specified session */ 357 num_tracks = ump->discinfo.num_tracks; 358 start_track = ump->discinfo.first_track; 359 360 /* search for first track of this session */ 361 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 362 /* get track info */ 363 trackinfo.tracknr = tracknr; 364 error = udf_update_trackinfo(ump, &trackinfo); 365 if (error) 366 return error; 367 368 if (trackinfo.sessionnr == args->sessionnr) 369 break; 370 } 371 *first_tracknr = tracknr; 372 373 /* search for last track of this session */ 374 for (;tracknr <= num_tracks; tracknr++) { 375 /* get track info */ 376 trackinfo.tracknr = tracknr; 377 error = udf_update_trackinfo(ump, &trackinfo); 378 if (error || (trackinfo.sessionnr != args->sessionnr)) { 379 tracknr--; 380 break; 381 } 382 } 383 if (tracknr > num_tracks) 384 tracknr--; 385 386 *last_tracknr = tracknr; 387 388 if (*last_tracknr < *first_tracknr) { 389 printf( "udf_search_tracks: sanity check on drive+disc failed, " 390 "drive returned garbage\n"); 391 return EINVAL; 392 } 393 394 assert(*last_tracknr >= *first_tracknr); 395 return 0; 396 } 397 398 399 /* 400 * NOTE: this is the only routine in this file that directly peeks into the 401 * metadata file but since its at a larval state of the mount it can't hurt. 402 * 403 * XXX candidate for udf_allocation.c 404 * XXX clean me up!, change to new node reading code. 405 */ 406 407 static void 408 udf_check_track_metadata_overlap(struct udf_mount *ump, 409 struct mmc_trackinfo *trackinfo) 410 { 411 struct part_desc *part; 412 struct file_entry *fe; 413 struct extfile_entry *efe; 414 struct short_ad *s_ad; 415 struct long_ad *l_ad; 416 uint32_t track_start, track_end; 417 uint32_t phys_part_start, phys_part_end, part_start, part_end; 418 uint32_t sector_size, len, alloclen, plb_num; 419 uint8_t *pos; 420 int addr_type, icblen, icbflags, flags; 421 422 /* get our track extents */ 423 track_start = trackinfo->track_start; 424 track_end = track_start + trackinfo->track_size; 425 426 /* get our base partition extent */ 427 part = ump->partitions[ump->metadata_part]; 428 phys_part_start = udf_rw32(part->start_loc); 429 phys_part_end = phys_part_start + udf_rw32(part->part_len); 430 431 /* no use if its outside the physical partition */ 432 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 433 return; 434 435 /* 436 * now follow all extents in the fe/efe to see if they refer to this 437 * track 438 */ 439 440 sector_size = ump->discinfo.sector_size; 441 442 /* XXX should we claim exclusive access to the metafile ? */ 443 /* TODO: move to new node read code */ 444 fe = ump->metadata_node->fe; 445 efe = ump->metadata_node->efe; 446 if (fe) { 447 alloclen = udf_rw32(fe->l_ad); 448 pos = &fe->data[0] + udf_rw32(fe->l_ea); 449 icbflags = udf_rw16(fe->icbtag.flags); 450 } else { 451 assert(efe); 452 alloclen = udf_rw32(efe->l_ad); 453 pos = &efe->data[0] + udf_rw32(efe->l_ea); 454 icbflags = udf_rw16(efe->icbtag.flags); 455 } 456 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 457 458 while (alloclen) { 459 if (addr_type == UDF_ICB_SHORT_ALLOC) { 460 icblen = sizeof(struct short_ad); 461 s_ad = (struct short_ad *) pos; 462 len = udf_rw32(s_ad->len); 463 plb_num = udf_rw32(s_ad->lb_num); 464 } else { 465 /* should not be present, but why not */ 466 icblen = sizeof(struct long_ad); 467 l_ad = (struct long_ad *) pos; 468 len = udf_rw32(l_ad->len); 469 plb_num = udf_rw32(l_ad->loc.lb_num); 470 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 471 } 472 /* process extent */ 473 flags = UDF_EXT_FLAGS(len); 474 len = UDF_EXT_LEN(len); 475 476 part_start = phys_part_start + plb_num; 477 part_end = part_start + (len / sector_size); 478 479 if ((part_start >= track_start) && (part_end <= track_end)) { 480 /* extent is enclosed within this track */ 481 ump->metadata_track = *trackinfo; 482 return; 483 } 484 485 pos += icblen; 486 alloclen -= icblen; 487 } 488 } 489 490 491 int 492 udf_search_writing_tracks(struct udf_mount *ump) 493 { 494 struct mmc_trackinfo trackinfo; 495 struct part_desc *part; 496 uint32_t tracknr, start_track, num_tracks; 497 uint32_t track_start, track_end, part_start, part_end; 498 int error; 499 500 /* 501 * in the CD/(HD)DVD/BD recordable device model a few tracks within 502 * the last session might be open but in the UDF device model at most 503 * three tracks can be open: a reserved track for delayed ISO VRS 504 * writing, a data track and a metadata track. We search here for the 505 * data track and the metadata track. Note that the reserved track is 506 * troublesome but can be detected by its small size of < 512 sectors. 507 */ 508 509 num_tracks = ump->discinfo.num_tracks; 510 start_track = ump->discinfo.first_track; 511 512 /* fetch info on first and possibly only track */ 513 trackinfo.tracknr = start_track; 514 error = udf_update_trackinfo(ump, &trackinfo); 515 if (error) 516 return error; 517 518 /* copy results to our mount point */ 519 ump->data_track = trackinfo; 520 ump->metadata_track = trackinfo; 521 522 /* if not sequential, we're done */ 523 if (num_tracks == 1) 524 return 0; 525 526 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 527 /* get track info */ 528 trackinfo.tracknr = tracknr; 529 error = udf_update_trackinfo(ump, &trackinfo); 530 if (error) 531 return error; 532 533 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 534 continue; 535 536 track_start = trackinfo.track_start; 537 track_end = track_start + trackinfo.track_size; 538 539 /* check for overlap on data partition */ 540 part = ump->partitions[ump->data_part]; 541 part_start = udf_rw32(part->start_loc); 542 part_end = part_start + udf_rw32(part->part_len); 543 if ((part_start < track_end) && (part_end > track_start)) { 544 ump->data_track = trackinfo; 545 /* TODO check if UDF partition data_part is writable */ 546 } 547 548 /* check for overlap on metadata partition */ 549 if ((ump->meta_alloc == UDF_ALLOC_METASEQUENTIAL) || 550 (ump->meta_alloc == UDF_ALLOC_METABITMAP)) { 551 udf_check_track_metadata_overlap(ump, &trackinfo); 552 } else { 553 ump->metadata_track = trackinfo; 554 } 555 } 556 557 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 558 return EROFS; 559 560 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 561 return EROFS; 562 563 return 0; 564 } 565 566 /* --------------------------------------------------------------------- */ 567 568 /* 569 * Check if the blob starts with a good UDF tag. Tags are protected by a 570 * checksum over the reader except one byte at position 4 that is the checksum 571 * itself. 572 */ 573 574 int 575 udf_check_tag(void *blob) 576 { 577 struct desc_tag *tag = blob; 578 uint8_t *pos, sum, cnt; 579 580 /* check TAG header checksum */ 581 pos = (uint8_t *) tag; 582 sum = 0; 583 584 for(cnt = 0; cnt < 16; cnt++) { 585 if (cnt != 4) 586 sum += *pos; 587 pos++; 588 } 589 if (sum != tag->cksum) { 590 /* bad tag header checksum; this is not a valid tag */ 591 return EINVAL; 592 } 593 594 return 0; 595 } 596 597 598 /* 599 * check tag payload will check descriptor CRC as specified. 600 * If the descriptor is too long, it will return EIO otherwise EINVAL. 601 */ 602 603 int 604 udf_check_tag_payload(void *blob, uint32_t max_length) 605 { 606 struct desc_tag *tag = blob; 607 uint16_t crc, crc_len; 608 609 crc_len = udf_rw16(tag->desc_crc_len); 610 611 /* check payload CRC if applicable */ 612 if (crc_len == 0) 613 return 0; 614 615 if (crc_len > max_length) 616 return EIO; 617 618 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 619 if (crc != udf_rw16(tag->desc_crc)) { 620 /* bad payload CRC; this is a broken tag */ 621 return EINVAL; 622 } 623 624 return 0; 625 } 626 627 628 void 629 udf_validate_tag_sum(void *blob) 630 { 631 struct desc_tag *tag = blob; 632 uint8_t *pos, sum, cnt; 633 634 /* calculate TAG header checksum */ 635 pos = (uint8_t *) tag; 636 sum = 0; 637 638 for(cnt = 0; cnt < 16; cnt++) { 639 if (cnt != 4) sum += *pos; 640 pos++; 641 } 642 tag->cksum = sum; /* 8 bit */ 643 } 644 645 646 /* assumes sector number of descriptor to be saved already present */ 647 void 648 udf_validate_tag_and_crc_sums(void *blob) 649 { 650 struct desc_tag *tag = blob; 651 uint8_t *btag = (uint8_t *) tag; 652 uint16_t crc, crc_len; 653 654 crc_len = udf_rw16(tag->desc_crc_len); 655 656 /* check payload CRC if applicable */ 657 if (crc_len > 0) { 658 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 659 tag->desc_crc = udf_rw16(crc); 660 } 661 662 /* calculate TAG header checksum */ 663 udf_validate_tag_sum(blob); 664 } 665 666 /* --------------------------------------------------------------------- */ 667 668 /* 669 * XXX note the different semantics from udfclient: for FIDs it still rounds 670 * up to sectors. Use udf_fidsize() for a correct length. 671 */ 672 673 int 674 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 675 { 676 uint32_t size, tag_id, num_lb, elmsz; 677 678 tag_id = udf_rw16(dscr->tag.id); 679 680 switch (tag_id) { 681 case TAGID_LOGVOL : 682 size = sizeof(struct logvol_desc) - 1; 683 size += udf_rw32(dscr->lvd.mt_l); 684 break; 685 case TAGID_UNALLOC_SPACE : 686 elmsz = sizeof(struct extent_ad); 687 size = sizeof(struct unalloc_sp_desc) - elmsz; 688 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 689 break; 690 case TAGID_FID : 691 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 692 size = (size + 3) & ~3; 693 break; 694 case TAGID_LOGVOL_INTEGRITY : 695 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 696 size += udf_rw32(dscr->lvid.l_iu); 697 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 698 break; 699 case TAGID_SPACE_BITMAP : 700 size = sizeof(struct space_bitmap_desc) - 1; 701 size += udf_rw32(dscr->sbd.num_bytes); 702 break; 703 case TAGID_SPARING_TABLE : 704 elmsz = sizeof(struct spare_map_entry); 705 size = sizeof(struct udf_sparing_table) - elmsz; 706 size += udf_rw16(dscr->spt.rt_l) * elmsz; 707 break; 708 case TAGID_FENTRY : 709 size = sizeof(struct file_entry); 710 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 711 break; 712 case TAGID_EXTFENTRY : 713 size = sizeof(struct extfile_entry); 714 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 715 break; 716 case TAGID_FSD : 717 size = sizeof(struct fileset_desc); 718 break; 719 default : 720 size = sizeof(union dscrptr); 721 break; 722 } 723 724 if ((size == 0) || (lb_size == 0)) return 0; 725 726 /* round up in sectors */ 727 num_lb = (size + lb_size -1) / lb_size; 728 return num_lb * lb_size; 729 } 730 731 732 int 733 udf_fidsize(struct fileid_desc *fid) 734 { 735 uint32_t size; 736 737 if (udf_rw16(fid->tag.id) != TAGID_FID) 738 panic("got udf_fidsize on non FID\n"); 739 740 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 741 size = (size + 3) & ~3; 742 743 return size; 744 } 745 746 /* --------------------------------------------------------------------- */ 747 748 void 749 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 750 { 751 int ret; 752 753 mutex_enter(&udf_node->node_mutex); 754 /* wait until free */ 755 while (udf_node->i_flags & IN_LOCKED) { 756 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 757 /* TODO check if we should return error; abort */ 758 if (ret == EWOULDBLOCK) { 759 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 760 "wanted at %s:%d, previously locked at %s:%d\n", 761 udf_node, fname, lineno, 762 udf_node->lock_fname, udf_node->lock_lineno)); 763 } 764 } 765 /* grab */ 766 udf_node->i_flags |= IN_LOCKED | flag; 767 /* debug */ 768 udf_node->lock_fname = fname; 769 udf_node->lock_lineno = lineno; 770 771 mutex_exit(&udf_node->node_mutex); 772 } 773 774 775 void 776 udf_unlock_node(struct udf_node *udf_node, int flag) 777 { 778 mutex_enter(&udf_node->node_mutex); 779 udf_node->i_flags &= ~(IN_LOCKED | flag); 780 cv_broadcast(&udf_node->node_lock); 781 mutex_exit(&udf_node->node_mutex); 782 } 783 784 785 /* --------------------------------------------------------------------- */ 786 787 static int 788 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 789 { 790 int error; 791 792 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 793 (union dscrptr **) dst); 794 if (!error) { 795 /* blank terminator blocks are not allowed here */ 796 if (*dst == NULL) 797 return ENOENT; 798 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 799 error = ENOENT; 800 free(*dst, M_UDFVOLD); 801 *dst = NULL; 802 DPRINTF(VOLUMES, ("Not an anchor\n")); 803 } 804 } 805 806 return error; 807 } 808 809 810 int 811 udf_read_anchors(struct udf_mount *ump) 812 { 813 struct udf_args *args = &ump->mount_args; 814 struct mmc_trackinfo first_track; 815 struct mmc_trackinfo second_track; 816 struct mmc_trackinfo last_track; 817 struct anchor_vdp **anchorsp; 818 uint32_t track_start; 819 uint32_t track_end; 820 uint32_t positions[4]; 821 int first_tracknr, last_tracknr; 822 int error, anch, ok, first_anchor; 823 824 /* search the first and last track of the specified session */ 825 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 826 if (!error) { 827 first_track.tracknr = first_tracknr; 828 error = udf_update_trackinfo(ump, &first_track); 829 } 830 if (!error) { 831 last_track.tracknr = last_tracknr; 832 error = udf_update_trackinfo(ump, &last_track); 833 } 834 if ((!error) && (first_tracknr != last_tracknr)) { 835 second_track.tracknr = first_tracknr+1; 836 error = udf_update_trackinfo(ump, &second_track); 837 } 838 if (error) { 839 printf("UDF mount: reading disc geometry failed\n"); 840 return 0; 841 } 842 843 track_start = first_track.track_start; 844 845 /* `end' is not as straitforward as start. */ 846 track_end = last_track.track_start 847 + last_track.track_size - last_track.free_blocks - 1; 848 849 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 850 /* end of track is not straitforward here */ 851 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 852 track_end = last_track.last_recorded; 853 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 854 track_end = last_track.next_writable 855 - ump->discinfo.link_block_penalty; 856 } 857 858 /* its no use reading a blank track */ 859 first_anchor = 0; 860 if (first_track.flags & MMC_TRACKINFO_BLANK) 861 first_anchor = 1; 862 863 /* get our packet size */ 864 ump->packet_size = first_track.packet_size; 865 if (first_track.flags & MMC_TRACKINFO_BLANK) 866 ump->packet_size = second_track.packet_size; 867 868 if (ump->packet_size <= 1) { 869 /* take max, but not bigger than 64 */ 870 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 871 ump->packet_size = MIN(ump->packet_size, 64); 872 } 873 KASSERT(ump->packet_size >= 1); 874 875 /* read anchors start+256, start+512, end-256, end */ 876 positions[0] = track_start+256; 877 positions[1] = track_end-256; 878 positions[2] = track_end; 879 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 880 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 881 882 ok = 0; 883 anchorsp = ump->anchors; 884 for (anch = first_anchor; anch < 4; anch++) { 885 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 886 positions[anch])); 887 error = udf_read_anchor(ump, positions[anch], anchorsp); 888 if (!error) { 889 anchorsp++; 890 ok++; 891 } 892 } 893 894 /* VATs are only recorded on sequential media, but initialise */ 895 ump->first_possible_vat_location = track_start + 2; 896 ump->last_possible_vat_location = track_end + last_track.packet_size; 897 898 return ok; 899 } 900 901 /* --------------------------------------------------------------------- */ 902 903 /* we dont try to be smart; we just record the parts */ 904 #define UDF_UPDATE_DSCR(name, dscr) \ 905 if (name) \ 906 free(name, M_UDFVOLD); \ 907 name = dscr; 908 909 static int 910 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 911 { 912 struct part_desc *part; 913 uint16_t phys_part, raw_phys_part; 914 915 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 916 udf_rw16(dscr->tag.id))); 917 switch (udf_rw16(dscr->tag.id)) { 918 case TAGID_PRI_VOL : /* primary partition */ 919 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 920 break; 921 case TAGID_LOGVOL : /* logical volume */ 922 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 923 break; 924 case TAGID_UNALLOC_SPACE : /* unallocated space */ 925 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 926 break; 927 case TAGID_IMP_VOL : /* implementation */ 928 /* XXX do we care about multiple impl. descr ? */ 929 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 930 break; 931 case TAGID_PARTITION : /* physical partition */ 932 /* not much use if its not allocated */ 933 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 934 free(dscr, M_UDFVOLD); 935 break; 936 } 937 938 /* 939 * BUGALERT: some rogue implementations use random physical 940 * partion numbers to break other implementations so lookup 941 * the number. 942 */ 943 raw_phys_part = udf_rw16(dscr->pd.part_num); 944 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 945 part = ump->partitions[phys_part]; 946 if (part == NULL) 947 break; 948 if (udf_rw16(part->part_num) == raw_phys_part) 949 break; 950 } 951 if (phys_part == UDF_PARTITIONS) { 952 free(dscr, M_UDFVOLD); 953 return EINVAL; 954 } 955 956 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 957 break; 958 case TAGID_VOL : /* volume space extender; rare */ 959 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 960 free(dscr, M_UDFVOLD); 961 break; 962 default : 963 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 964 udf_rw16(dscr->tag.id))); 965 free(dscr, M_UDFVOLD); 966 } 967 968 return 0; 969 } 970 #undef UDF_UPDATE_DSCR 971 972 /* --------------------------------------------------------------------- */ 973 974 static int 975 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 976 { 977 union dscrptr *dscr; 978 uint32_t sector_size, dscr_size; 979 int error; 980 981 sector_size = ump->discinfo.sector_size; 982 983 /* loc is sectornr, len is in bytes */ 984 error = EIO; 985 while (len) { 986 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 987 if (error) 988 return error; 989 990 /* blank block is a terminator */ 991 if (dscr == NULL) 992 return 0; 993 994 /* TERM descriptor is a terminator */ 995 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 996 free(dscr, M_UDFVOLD); 997 return 0; 998 } 999 1000 /* process all others */ 1001 dscr_size = udf_tagsize(dscr, sector_size); 1002 error = udf_process_vds_descriptor(ump, dscr); 1003 if (error) { 1004 free(dscr, M_UDFVOLD); 1005 break; 1006 } 1007 assert((dscr_size % sector_size) == 0); 1008 1009 len -= dscr_size; 1010 loc += dscr_size / sector_size; 1011 } 1012 1013 return error; 1014 } 1015 1016 1017 int 1018 udf_read_vds_space(struct udf_mount *ump) 1019 { 1020 /* struct udf_args *args = &ump->mount_args; */ 1021 struct anchor_vdp *anchor, *anchor2; 1022 size_t size; 1023 uint32_t main_loc, main_len; 1024 uint32_t reserve_loc, reserve_len; 1025 int error; 1026 1027 /* 1028 * read in VDS space provided by the anchors; if one descriptor read 1029 * fails, try the mirror sector. 1030 * 1031 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1032 * avoids the `compatibility features' of DirectCD that may confuse 1033 * stuff completely. 1034 */ 1035 1036 anchor = ump->anchors[0]; 1037 anchor2 = ump->anchors[1]; 1038 assert(anchor); 1039 1040 if (anchor2) { 1041 size = sizeof(struct extent_ad); 1042 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1043 anchor = anchor2; 1044 /* reserve is specified to be a literal copy of main */ 1045 } 1046 1047 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1048 main_len = udf_rw32(anchor->main_vds_ex.len); 1049 1050 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1051 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1052 1053 error = udf_read_vds_extent(ump, main_loc, main_len); 1054 if (error) { 1055 printf("UDF mount: reading in reserve VDS extent\n"); 1056 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1057 } 1058 1059 return error; 1060 } 1061 1062 /* --------------------------------------------------------------------- */ 1063 1064 /* 1065 * Read in the logical volume integrity sequence pointed to by our logical 1066 * volume descriptor. Its a sequence that can be extended using fields in the 1067 * integrity descriptor itself. On sequential media only one is found, on 1068 * rewritable media a sequence of descriptors can be found as a form of 1069 * history keeping and on non sequential write-once media the chain is vital 1070 * to allow more and more descriptors to be written. The last descriptor 1071 * written in an extent needs to claim space for a new extent. 1072 */ 1073 1074 static int 1075 udf_retrieve_lvint(struct udf_mount *ump) 1076 { 1077 union dscrptr *dscr; 1078 struct logvol_int_desc *lvint; 1079 struct udf_lvintq *trace; 1080 uint32_t lb_size, lbnum, len; 1081 int dscr_type, error, trace_len; 1082 1083 lb_size = udf_rw32(ump->logical_vol->lb_size); 1084 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1085 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1086 1087 /* clean trace */ 1088 memset(ump->lvint_trace, 0, 1089 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1090 1091 trace_len = 0; 1092 trace = ump->lvint_trace; 1093 trace->start = lbnum; 1094 trace->end = lbnum + len/lb_size; 1095 trace->pos = 0; 1096 trace->wpos = 0; 1097 1098 lvint = NULL; 1099 dscr = NULL; 1100 error = 0; 1101 while (len) { 1102 trace->pos = lbnum - trace->start; 1103 trace->wpos = trace->pos + 1; 1104 1105 /* read in our integrity descriptor */ 1106 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1107 if (!error) { 1108 if (dscr == NULL) { 1109 trace->wpos = trace->pos; 1110 break; /* empty terminates */ 1111 } 1112 dscr_type = udf_rw16(dscr->tag.id); 1113 if (dscr_type == TAGID_TERM) { 1114 trace->wpos = trace->pos; 1115 break; /* clean terminator */ 1116 } 1117 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1118 /* fatal... corrupt disc */ 1119 error = ENOENT; 1120 break; 1121 } 1122 if (lvint) 1123 free(lvint, M_UDFVOLD); 1124 lvint = &dscr->lvid; 1125 dscr = NULL; 1126 } /* else hope for the best... maybe the next is ok */ 1127 1128 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1129 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1130 1131 /* proceed sequential */ 1132 lbnum += 1; 1133 len -= lb_size; 1134 1135 /* are we linking to a new piece? */ 1136 if (dscr && lvint->next_extent.len) { 1137 len = udf_rw32(lvint->next_extent.len); 1138 lbnum = udf_rw32(lvint->next_extent.loc); 1139 1140 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1141 /* IEK! segment link full... */ 1142 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1143 error = EINVAL; 1144 } else { 1145 trace++; 1146 trace_len++; 1147 1148 trace->start = lbnum; 1149 trace->end = lbnum + len/lb_size; 1150 trace->pos = 0; 1151 trace->wpos = 0; 1152 } 1153 } 1154 } 1155 1156 /* clean up the mess, esp. when there is an error */ 1157 if (dscr) 1158 free(dscr, M_UDFVOLD); 1159 1160 if (error && lvint) { 1161 free(lvint, M_UDFVOLD); 1162 lvint = NULL; 1163 } 1164 1165 if (!lvint) 1166 error = ENOENT; 1167 1168 ump->logvol_integrity = lvint; 1169 return error; 1170 } 1171 1172 1173 static int 1174 udf_loose_lvint_history(struct udf_mount *ump) 1175 { 1176 union dscrptr **bufs, *dscr, *last_dscr; 1177 struct udf_lvintq *trace, *in_trace, *out_trace; 1178 struct logvol_int_desc *lvint; 1179 uint32_t in_ext, in_pos, in_len; 1180 uint32_t out_ext, out_wpos, out_len; 1181 uint32_t lb_size, packet_size, lb_num; 1182 uint32_t len, start; 1183 int ext, minext, extlen, cnt, cpy_len, dscr_type; 1184 int losing; 1185 int error; 1186 1187 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1188 1189 lb_size = udf_rw32(ump->logical_vol->lb_size); 1190 packet_size = ump->data_track.packet_size; /* XXX data track */ 1191 1192 /* search smallest extent */ 1193 trace = &ump->lvint_trace[0]; 1194 minext = trace->end - trace->start; 1195 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1196 trace = &ump->lvint_trace[ext]; 1197 extlen = trace->end - trace->start; 1198 if (extlen == 0) 1199 break; 1200 minext = MIN(minext, extlen); 1201 } 1202 losing = MIN(minext, UDF_LVINT_LOSSAGE); 1203 /* no sense wiping all */ 1204 if (losing == minext) 1205 losing--; 1206 1207 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1208 1209 /* get buffer for pieces */ 1210 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1211 1212 in_ext = 0; 1213 in_pos = losing; 1214 in_trace = &ump->lvint_trace[in_ext]; 1215 in_len = in_trace->end - in_trace->start; 1216 out_ext = 0; 1217 out_wpos = 0; 1218 out_trace = &ump->lvint_trace[out_ext]; 1219 out_len = out_trace->end - out_trace->start; 1220 1221 last_dscr = NULL; 1222 for(;;) { 1223 out_trace->pos = out_wpos; 1224 out_trace->wpos = out_trace->pos; 1225 if (in_pos >= in_len) { 1226 in_ext++; 1227 in_pos = 0; 1228 in_trace = &ump->lvint_trace[in_ext]; 1229 in_len = in_trace->end - in_trace->start; 1230 } 1231 if (out_wpos >= out_len) { 1232 out_ext++; 1233 out_wpos = 0; 1234 out_trace = &ump->lvint_trace[out_ext]; 1235 out_len = out_trace->end - out_trace->start; 1236 } 1237 /* copy overlap contents */ 1238 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1239 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1240 if (cpy_len == 0) 1241 break; 1242 1243 /* copy */ 1244 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1245 for (cnt = 0; cnt < cpy_len; cnt++) { 1246 /* read in our integrity descriptor */ 1247 lb_num = in_trace->start + in_pos + cnt; 1248 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1249 &dscr); 1250 if (error) { 1251 /* copy last one */ 1252 dscr = last_dscr; 1253 } 1254 bufs[cnt] = dscr; 1255 if (!error) { 1256 if (dscr == NULL) { 1257 out_trace->pos = out_wpos + cnt; 1258 out_trace->wpos = out_trace->pos; 1259 break; /* empty terminates */ 1260 } 1261 dscr_type = udf_rw16(dscr->tag.id); 1262 if (dscr_type == TAGID_TERM) { 1263 out_trace->pos = out_wpos + cnt; 1264 out_trace->wpos = out_trace->pos; 1265 break; /* clean terminator */ 1266 } 1267 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1268 panic( "UDF integrity sequence " 1269 "corrupted while mounted!\n"); 1270 } 1271 last_dscr = dscr; 1272 } 1273 } 1274 1275 /* patch up if first entry was on error */ 1276 if (bufs[0] == NULL) { 1277 for (cnt = 0; cnt < cpy_len; cnt++) 1278 if (bufs[cnt] != NULL) 1279 break; 1280 last_dscr = bufs[cnt]; 1281 for (; cnt > 0; cnt--) { 1282 bufs[cnt] = last_dscr; 1283 } 1284 } 1285 1286 /* glue + write out */ 1287 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1288 for (cnt = 0; cnt < cpy_len; cnt++) { 1289 lb_num = out_trace->start + out_wpos + cnt; 1290 lvint = &bufs[cnt]->lvid; 1291 1292 /* set continuation */ 1293 len = 0; 1294 start = 0; 1295 if (out_wpos + cnt == out_len) { 1296 /* get continuation */ 1297 trace = &ump->lvint_trace[out_ext+1]; 1298 len = trace->end - trace->start; 1299 start = trace->start; 1300 } 1301 lvint->next_extent.len = udf_rw32(len); 1302 lvint->next_extent.loc = udf_rw32(start); 1303 1304 lb_num = trace->start + trace->wpos; 1305 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1306 bufs[cnt], lb_num, lb_num); 1307 DPRINTFIF(VOLUMES, error, 1308 ("error writing lvint lb_num\n")); 1309 } 1310 1311 /* free non repeating descriptors */ 1312 last_dscr = NULL; 1313 for (cnt = 0; cnt < cpy_len; cnt++) { 1314 if (bufs[cnt] != last_dscr) 1315 free(bufs[cnt], M_UDFVOLD); 1316 last_dscr = bufs[cnt]; 1317 } 1318 1319 /* advance */ 1320 in_pos += cpy_len; 1321 out_wpos += cpy_len; 1322 } 1323 1324 free(bufs, M_TEMP); 1325 1326 return 0; 1327 } 1328 1329 1330 static int 1331 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1332 { 1333 struct udf_lvintq *trace; 1334 struct timeval now_v; 1335 struct timespec now_s; 1336 uint32_t sector; 1337 int logvol_integrity; 1338 int space, error; 1339 1340 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1341 1342 again: 1343 /* get free space in last chunk */ 1344 trace = ump->lvint_trace; 1345 while (trace->wpos > (trace->end - trace->start)) { 1346 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1347 "wpos = %d\n", trace->start, trace->end, 1348 trace->pos, trace->wpos)); 1349 trace++; 1350 } 1351 1352 /* check if there is space to append */ 1353 space = (trace->end - trace->start) - trace->wpos; 1354 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1355 "space = %d\n", trace->start, trace->end, trace->pos, 1356 trace->wpos, space)); 1357 1358 /* get state */ 1359 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1360 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1361 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1362 /* don't allow this logvol to be opened */ 1363 /* TODO extent LVINT space if possible */ 1364 return EROFS; 1365 } 1366 } 1367 1368 if (space < 1) { 1369 if (lvflag & UDF_APPENDONLY_LVINT) 1370 return EROFS; 1371 /* loose history by re-writing extents */ 1372 error = udf_loose_lvint_history(ump); 1373 if (error) 1374 return error; 1375 goto again; 1376 } 1377 1378 /* update our integrity descriptor to identify us and timestamp it */ 1379 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1380 microtime(&now_v); 1381 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1382 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1383 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1384 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1385 1386 /* writeout integrity descriptor */ 1387 sector = trace->start + trace->wpos; 1388 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1389 (union dscrptr *) ump->logvol_integrity, 1390 sector, sector); 1391 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1392 if (error) 1393 return error; 1394 1395 /* advance write position */ 1396 trace->wpos++; space--; 1397 if (space >= 1) { 1398 /* append terminator */ 1399 sector = trace->start + trace->wpos; 1400 error = udf_write_terminator(ump, sector); 1401 1402 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1403 } 1404 1405 space = (trace->end - trace->start) - trace->wpos; 1406 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1407 "space = %d\n", trace->start, trace->end, trace->pos, 1408 trace->wpos, space)); 1409 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1410 "successfull\n")); 1411 1412 return error; 1413 } 1414 1415 /* --------------------------------------------------------------------- */ 1416 1417 static int 1418 udf_read_partition_spacetables(struct udf_mount *ump) 1419 { 1420 union dscrptr *dscr; 1421 /* struct udf_args *args = &ump->mount_args; */ 1422 struct part_desc *partd; 1423 struct part_hdr_desc *parthdr; 1424 struct udf_bitmap *bitmap; 1425 uint32_t phys_part; 1426 uint32_t lb_num, len; 1427 int error, dscr_type; 1428 1429 /* unallocated space map */ 1430 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1431 partd = ump->partitions[phys_part]; 1432 if (partd == NULL) 1433 continue; 1434 parthdr = &partd->_impl_use.part_hdr; 1435 1436 lb_num = udf_rw32(partd->start_loc); 1437 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1438 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1439 if (len == 0) 1440 continue; 1441 1442 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1443 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1444 if (!error && dscr) { 1445 /* analyse */ 1446 dscr_type = udf_rw16(dscr->tag.id); 1447 if (dscr_type == TAGID_SPACE_BITMAP) { 1448 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1449 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1450 1451 /* fill in ump->part_unalloc_bits */ 1452 bitmap = &ump->part_unalloc_bits[phys_part]; 1453 bitmap->blob = (uint8_t *) dscr; 1454 bitmap->bits = dscr->sbd.data; 1455 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1456 bitmap->pages = NULL; /* TODO */ 1457 bitmap->data_pos = 0; 1458 bitmap->metadata_pos = 0; 1459 } else { 1460 free(dscr, M_UDFVOLD); 1461 1462 printf( "UDF mount: error reading unallocated " 1463 "space bitmap\n"); 1464 return EROFS; 1465 } 1466 } else { 1467 /* blank not allowed */ 1468 printf("UDF mount: blank unallocated space bitmap\n"); 1469 return EROFS; 1470 } 1471 } 1472 1473 /* unallocated space table (not supported) */ 1474 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1475 partd = ump->partitions[phys_part]; 1476 if (partd == NULL) 1477 continue; 1478 parthdr = &partd->_impl_use.part_hdr; 1479 1480 len = udf_rw32(parthdr->unalloc_space_table.len); 1481 if (len) { 1482 printf("UDF mount: space tables not supported\n"); 1483 return EROFS; 1484 } 1485 } 1486 1487 /* freed space map */ 1488 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1489 partd = ump->partitions[phys_part]; 1490 if (partd == NULL) 1491 continue; 1492 parthdr = &partd->_impl_use.part_hdr; 1493 1494 /* freed space map */ 1495 lb_num = udf_rw32(partd->start_loc); 1496 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1497 len = udf_rw32(parthdr->freed_space_bitmap.len); 1498 if (len == 0) 1499 continue; 1500 1501 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1502 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1503 if (!error && dscr) { 1504 /* analyse */ 1505 dscr_type = udf_rw16(dscr->tag.id); 1506 if (dscr_type == TAGID_SPACE_BITMAP) { 1507 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1508 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1509 1510 /* fill in ump->part_freed_bits */ 1511 bitmap = &ump->part_unalloc_bits[phys_part]; 1512 bitmap->blob = (uint8_t *) dscr; 1513 bitmap->bits = dscr->sbd.data; 1514 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1515 bitmap->pages = NULL; /* TODO */ 1516 bitmap->data_pos = 0; 1517 bitmap->metadata_pos = 0; 1518 } else { 1519 free(dscr, M_UDFVOLD); 1520 1521 printf( "UDF mount: error reading freed " 1522 "space bitmap\n"); 1523 return EROFS; 1524 } 1525 } else { 1526 /* blank not allowed */ 1527 printf("UDF mount: blank freed space bitmap\n"); 1528 return EROFS; 1529 } 1530 } 1531 1532 /* freed space table (not supported) */ 1533 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1534 partd = ump->partitions[phys_part]; 1535 if (partd == NULL) 1536 continue; 1537 parthdr = &partd->_impl_use.part_hdr; 1538 1539 len = udf_rw32(parthdr->freed_space_table.len); 1540 if (len) { 1541 printf("UDF mount: space tables not supported\n"); 1542 return EROFS; 1543 } 1544 } 1545 1546 return 0; 1547 } 1548 1549 1550 /* TODO implement async writeout */ 1551 int 1552 udf_write_partition_spacetables(struct udf_mount *ump, int waitfor) 1553 { 1554 union dscrptr *dscr; 1555 /* struct udf_args *args = &ump->mount_args; */ 1556 struct part_desc *partd; 1557 struct part_hdr_desc *parthdr; 1558 uint32_t phys_part; 1559 uint32_t lb_num, len, ptov; 1560 int error_all, error; 1561 1562 error_all = 0; 1563 /* unallocated space map */ 1564 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1565 partd = ump->partitions[phys_part]; 1566 if (partd == NULL) 1567 continue; 1568 parthdr = &partd->_impl_use.part_hdr; 1569 1570 ptov = udf_rw32(partd->start_loc); 1571 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1572 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1573 if (len == 0) 1574 continue; 1575 1576 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1577 lb_num + ptov)); 1578 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1579 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1580 (union dscrptr *) dscr, 1581 ptov + lb_num, lb_num); 1582 if (error) { 1583 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1584 error_all = error; 1585 } 1586 } 1587 1588 /* freed space map */ 1589 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1590 partd = ump->partitions[phys_part]; 1591 if (partd == NULL) 1592 continue; 1593 parthdr = &partd->_impl_use.part_hdr; 1594 1595 /* freed space map */ 1596 ptov = udf_rw32(partd->start_loc); 1597 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1598 len = udf_rw32(parthdr->freed_space_bitmap.len); 1599 if (len == 0) 1600 continue; 1601 1602 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1603 lb_num + ptov)); 1604 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1605 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1606 (union dscrptr *) dscr, 1607 ptov + lb_num, lb_num); 1608 if (error) { 1609 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1610 error_all = error; 1611 } 1612 } 1613 1614 return error_all; 1615 } 1616 1617 /* 1618 * Checks if ump's vds information is correct and complete 1619 */ 1620 1621 int 1622 udf_process_vds(struct udf_mount *ump) { 1623 union udf_pmap *mapping; 1624 /* struct udf_args *args = &ump->mount_args; */ 1625 struct logvol_int_desc *lvint; 1626 struct udf_logvol_info *lvinfo; 1627 struct part_desc *part; 1628 uint32_t n_pm, mt_l; 1629 uint8_t *pmap_pos; 1630 char *domain_name, *map_name; 1631 const char *check_name; 1632 char bits[128]; 1633 int pmap_stype, pmap_size; 1634 int pmap_type, log_part, phys_part, raw_phys_part; 1635 int n_phys, n_virt, n_spar, n_meta; 1636 int len, error; 1637 1638 if (ump == NULL) 1639 return ENOENT; 1640 1641 /* we need at least an anchor (trivial, but for safety) */ 1642 if (ump->anchors[0] == NULL) 1643 return EINVAL; 1644 1645 /* we need at least one primary and one logical volume descriptor */ 1646 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1647 return EINVAL; 1648 1649 /* we need at least one partition descriptor */ 1650 if (ump->partitions[0] == NULL) 1651 return EINVAL; 1652 1653 /* check logical volume sector size verses device sector size */ 1654 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1655 printf("UDF mount: format violation, lb_size != sector size\n"); 1656 return EINVAL; 1657 } 1658 1659 /* check domain name */ 1660 domain_name = ump->logical_vol->domain_id.id; 1661 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1662 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1663 return EINVAL; 1664 } 1665 1666 /* retrieve logical volume integrity sequence */ 1667 error = udf_retrieve_lvint(ump); 1668 1669 /* 1670 * We need at least one logvol integrity descriptor recorded. Note 1671 * that its OK to have an open logical volume integrity here. The VAT 1672 * will close/update the integrity. 1673 */ 1674 if (ump->logvol_integrity == NULL) 1675 return EINVAL; 1676 1677 /* read in and check unallocated and free space info if writing */ 1678 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 1679 error = udf_read_partition_spacetables(ump); 1680 if (error) 1681 return error; 1682 } 1683 1684 /* process derived structures */ 1685 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1686 lvint = ump->logvol_integrity; 1687 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1688 ump->logvol_info = lvinfo; 1689 1690 /* TODO check udf versions? */ 1691 1692 /* 1693 * check logvol mappings: effective virt->log partmap translation 1694 * check and recording of the mapping results. Saves expensive 1695 * strncmp() in tight places. 1696 */ 1697 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1698 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1699 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 1700 pmap_pos = ump->logical_vol->maps; 1701 1702 if (n_pm > UDF_PMAPS) { 1703 printf("UDF mount: too many mappings\n"); 1704 return EINVAL; 1705 } 1706 1707 ump->data_part = ump->metadata_part = 0; 1708 n_phys = n_virt = n_spar = n_meta = 0; 1709 for (log_part = 0; log_part < n_pm; log_part++) { 1710 mapping = (union udf_pmap *) pmap_pos; 1711 pmap_stype = pmap_pos[0]; 1712 pmap_size = pmap_pos[1]; 1713 switch (pmap_stype) { 1714 case 1: /* physical mapping */ 1715 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1716 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1717 pmap_type = UDF_VTOP_TYPE_PHYS; 1718 n_phys++; 1719 ump->data_part = log_part; 1720 ump->metadata_part = log_part; 1721 break; 1722 case 2: /* virtual/sparable/meta mapping */ 1723 map_name = mapping->pm2.part_id.id; 1724 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1725 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1726 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1727 len = UDF_REGID_ID_SIZE; 1728 1729 check_name = "*UDF Virtual Partition"; 1730 if (strncmp(map_name, check_name, len) == 0) { 1731 pmap_type = UDF_VTOP_TYPE_VIRT; 1732 n_virt++; 1733 ump->metadata_part = log_part; 1734 break; 1735 } 1736 check_name = "*UDF Sparable Partition"; 1737 if (strncmp(map_name, check_name, len) == 0) { 1738 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1739 n_spar++; 1740 ump->data_part = log_part; 1741 ump->metadata_part = log_part; 1742 break; 1743 } 1744 check_name = "*UDF Metadata Partition"; 1745 if (strncmp(map_name, check_name, len) == 0) { 1746 pmap_type = UDF_VTOP_TYPE_META; 1747 n_meta++; 1748 ump->metadata_part = log_part; 1749 break; 1750 } 1751 break; 1752 default: 1753 return EINVAL; 1754 } 1755 1756 /* 1757 * BUGALERT: some rogue implementations use random physical 1758 * partion numbers to break other implementations so lookup 1759 * the number. 1760 */ 1761 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1762 part = ump->partitions[phys_part]; 1763 if (part == NULL) 1764 continue; 1765 if (udf_rw16(part->part_num) == raw_phys_part) 1766 break; 1767 } 1768 1769 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 1770 raw_phys_part, phys_part, pmap_type)); 1771 1772 if (phys_part == UDF_PARTITIONS) 1773 return EINVAL; 1774 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 1775 return EINVAL; 1776 1777 ump->vtop [log_part] = phys_part; 1778 ump->vtop_tp[log_part] = pmap_type; 1779 1780 pmap_pos += pmap_size; 1781 } 1782 /* not winning the beauty contest */ 1783 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 1784 1785 /* test some basic UDF assertions/requirements */ 1786 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 1787 return EINVAL; 1788 1789 if (n_virt) { 1790 if ((n_phys == 0) || n_spar || n_meta) 1791 return EINVAL; 1792 } 1793 if (n_spar + n_phys == 0) 1794 return EINVAL; 1795 1796 /* determine allocation scheme's based on disc format */ 1797 /* VAT's can only be on a sequential media */ 1798 ump->data_alloc = UDF_ALLOC_SPACEMAP; 1799 if (n_virt) 1800 ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1801 1802 ump->meta_alloc = UDF_ALLOC_SPACEMAP; 1803 if (n_virt) 1804 ump->meta_alloc = UDF_ALLOC_VAT; 1805 if (n_meta) 1806 ump->meta_alloc = UDF_ALLOC_METABITMAP; 1807 1808 /* special cases for pseudo-overwrite */ 1809 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 1810 ump->data_alloc = UDF_ALLOC_SEQUENTIAL; 1811 if (n_meta) { 1812 ump->meta_alloc = UDF_ALLOC_METASEQUENTIAL; 1813 } else { 1814 ump->meta_alloc = UDF_ALLOC_RELAXEDSEQUENTIAL; 1815 } 1816 } 1817 1818 /* determine default allocation descriptors to use */ 1819 ump->data_allocdscr = UDF_ICB_SHORT_ALLOC; 1820 ump->meta_allocdscr = UDF_ICB_SHORT_ALLOC; 1821 if (n_pm > 1) { 1822 ump->data_allocdscr = UDF_ICB_LONG_ALLOC; 1823 ump->meta_allocdscr = UDF_ICB_LONG_ALLOC; 1824 /* metadata partitions are forced to have short */ 1825 if (n_meta) 1826 ump->meta_allocdscr = UDF_ICB_SHORT_ALLOC; 1827 } 1828 1829 /* determine logical volume open/closure actions */ 1830 if (n_virt) { 1831 ump->lvopen = 0; 1832 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1833 ump->lvopen |= UDF_OPEN_SESSION ; 1834 ump->lvclose = UDF_WRITE_VAT; 1835 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1836 ump->lvclose |= UDF_CLOSE_SESSION; 1837 } else { 1838 /* `normal' rewritable or non sequential media */ 1839 ump->lvopen = UDF_WRITE_LVINT; 1840 ump->lvclose = UDF_WRITE_LVINT; 1841 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1842 ump->lvopen |= UDF_APPENDONLY_LVINT; 1843 } 1844 1845 /* 1846 * Determine sheduler error behaviour. For virtual partions, update 1847 * the trackinfo; for sparable partitions replace a whole block on the 1848 * sparable table. Allways requeue. 1849 */ 1850 ump->lvreadwrite = 0; 1851 if (n_virt) 1852 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1853 if (n_spar) 1854 ump->lvreadwrite = UDF_REMAP_BLOCK; 1855 1856 /* 1857 * Select our sheduler 1858 */ 1859 ump->strategy = &udf_strat_rmw; 1860 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1861 ump->strategy = &udf_strat_sequential; 1862 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1863 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1864 ump->strategy = &udf_strat_direct; 1865 if (n_spar) 1866 ump->strategy = &udf_strat_rmw; 1867 1868 /* print results */ 1869 DPRINTF(VOLUMES, ("\tdata alloc scheme %d, meta alloc scheme %d\n", 1870 ump->data_alloc, ump->meta_alloc)); 1871 DPRINTF(VOLUMES, ("\tdata partition %d, metadata partition %d\n", 1872 ump->data_part, ump->metadata_part)); 1873 1874 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 1875 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 1876 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 1877 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 1878 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 1879 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 1880 1881 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 1882 (ump->strategy == &udf_strat_direct) ? "Direct" : 1883 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 1884 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 1885 1886 /* signal its OK for now */ 1887 return 0; 1888 } 1889 1890 /* --------------------------------------------------------------------- */ 1891 1892 /* 1893 * Update logical volume name in all structures that keep a record of it. We 1894 * use memmove since each of them might be specified as a source. 1895 * 1896 * Note that it doesn't update the VAT structure! 1897 */ 1898 1899 static void 1900 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 1901 { 1902 struct logvol_desc *lvd = NULL; 1903 struct fileset_desc *fsd = NULL; 1904 struct udf_lv_info *lvi = NULL; 1905 1906 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 1907 lvd = ump->logical_vol; 1908 fsd = ump->fileset_desc; 1909 if (ump->implementation) 1910 lvi = &ump->implementation->_impl_use.lv_info; 1911 1912 /* logvol's id might be specified as origional so use memmove here */ 1913 memmove(lvd->logvol_id, logvol_id, 128); 1914 if (fsd) 1915 memmove(fsd->logvol_id, logvol_id, 128); 1916 if (lvi) 1917 memmove(lvi->logvol_id, logvol_id, 128); 1918 } 1919 1920 /* --------------------------------------------------------------------- */ 1921 1922 void 1923 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 1924 uint32_t sector) 1925 { 1926 assert(ump->logical_vol); 1927 1928 tag->id = udf_rw16(tagid); 1929 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 1930 tag->cksum = 0; 1931 tag->reserved = 0; 1932 tag->serial_num = ump->logical_vol->tag.serial_num; 1933 tag->tag_loc = udf_rw32(sector); 1934 } 1935 1936 1937 uint64_t 1938 udf_advance_uniqueid(struct udf_mount *ump) 1939 { 1940 uint64_t unique_id; 1941 1942 mutex_enter(&ump->logvol_mutex); 1943 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 1944 if (unique_id < 0x10) 1945 unique_id = 0x10; 1946 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 1947 mutex_exit(&ump->logvol_mutex); 1948 1949 return unique_id; 1950 } 1951 1952 1953 static void 1954 udf_adjust_filecount(struct udf_node *udf_node, int sign) 1955 { 1956 struct udf_mount *ump = udf_node->ump; 1957 uint32_t num_dirs, num_files; 1958 int udf_file_type; 1959 1960 /* get file type */ 1961 if (udf_node->fe) { 1962 udf_file_type = udf_node->fe->icbtag.file_type; 1963 } else { 1964 udf_file_type = udf_node->efe->icbtag.file_type; 1965 } 1966 1967 /* adjust file count */ 1968 mutex_enter(&ump->allocate_mutex); 1969 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 1970 num_dirs = udf_rw32(ump->logvol_info->num_directories); 1971 ump->logvol_info->num_directories = 1972 udf_rw32((num_dirs + sign)); 1973 } else { 1974 num_files = udf_rw32(ump->logvol_info->num_files); 1975 ump->logvol_info->num_files = 1976 udf_rw32((num_files + sign)); 1977 } 1978 mutex_exit(&ump->allocate_mutex); 1979 } 1980 1981 1982 void 1983 udf_osta_charset(struct charspec *charspec) 1984 { 1985 bzero(charspec, sizeof(struct charspec)); 1986 charspec->type = 0; 1987 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 1988 } 1989 1990 1991 /* first call udf_set_regid and then the suffix */ 1992 void 1993 udf_set_regid(struct regid *regid, char const *name) 1994 { 1995 bzero(regid, sizeof(struct regid)); 1996 regid->flags = 0; /* not dirty and not protected */ 1997 strcpy((char *) regid->id, name); 1998 } 1999 2000 2001 void 2002 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2003 { 2004 uint16_t *ver; 2005 2006 ver = (uint16_t *) regid->id_suffix; 2007 *ver = ump->logvol_info->min_udf_readver; 2008 } 2009 2010 2011 void 2012 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2013 { 2014 uint16_t *ver; 2015 2016 ver = (uint16_t *) regid->id_suffix; 2017 *ver = ump->logvol_info->min_udf_readver; 2018 2019 regid->id_suffix[2] = 4; /* unix */ 2020 regid->id_suffix[3] = 8; /* NetBSD */ 2021 } 2022 2023 2024 void 2025 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2026 { 2027 regid->id_suffix[0] = 4; /* unix */ 2028 regid->id_suffix[1] = 8; /* NetBSD */ 2029 } 2030 2031 2032 void 2033 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2034 { 2035 regid->id_suffix[0] = APP_VERSION_MAIN; 2036 regid->id_suffix[1] = APP_VERSION_SUB; 2037 } 2038 2039 static int 2040 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2041 struct long_ad *parent, uint64_t unique_id) 2042 { 2043 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2044 int fidsize = 40; 2045 2046 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2047 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2048 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2049 fid->icb = *parent; 2050 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2051 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2052 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2053 2054 return fidsize; 2055 } 2056 2057 /* --------------------------------------------------------------------- */ 2058 2059 /* 2060 * Extended attribute support. UDF knows of 3 places for extended attributes: 2061 * 2062 * (a) inside the file's (e)fe in the length of the extended attribute area 2063 * before the allocation descriptors/filedata 2064 * 2065 * (b) in a file referenced by (e)fe->ext_attr_icb and 2066 * 2067 * (c) in the e(fe)'s associated stream directory that can hold various 2068 * sub-files. In the stream directory a few fixed named subfiles are reserved 2069 * for NT/Unix ACL's and OS/2 attributes. 2070 * 2071 * NOTE: Extended attributes are read randomly but allways written 2072 * *atomicaly*. For ACL's this interface is propably different but not known 2073 * to me yet. 2074 * 2075 * Order of extended attributes in a space : 2076 * ECMA 167 EAs 2077 * Non block aligned Implementation Use EAs 2078 * Block aligned Implementation Use EAs 2079 * Application Use EAs 2080 */ 2081 2082 static int 2083 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2084 { 2085 uint16_t *spos; 2086 2087 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2088 /* checksum valid? */ 2089 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2090 spos = (uint16_t *) implext->data; 2091 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2092 return EINVAL; 2093 } 2094 return 0; 2095 } 2096 2097 static void 2098 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2099 { 2100 uint16_t *spos; 2101 2102 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2103 /* set checksum */ 2104 spos = (uint16_t *) implext->data; 2105 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2106 } 2107 } 2108 2109 2110 int 2111 udf_extattr_search_intern(struct udf_node *node, 2112 uint32_t sattr, char const *sattrname, 2113 uint32_t *offsetp, uint32_t *lengthp) 2114 { 2115 struct extattrhdr_desc *eahdr; 2116 struct extattr_entry *attrhdr; 2117 struct impl_extattr_entry *implext; 2118 uint32_t offset, a_l, sector_size; 2119 int32_t l_ea; 2120 uint8_t *pos; 2121 int error; 2122 2123 /* get mountpoint */ 2124 sector_size = node->ump->discinfo.sector_size; 2125 2126 /* get information from fe/efe */ 2127 if (node->fe) { 2128 l_ea = udf_rw32(node->fe->l_ea); 2129 eahdr = (struct extattrhdr_desc *) node->fe->data; 2130 } else { 2131 assert(node->efe); 2132 l_ea = udf_rw32(node->efe->l_ea); 2133 eahdr = (struct extattrhdr_desc *) node->efe->data; 2134 } 2135 2136 /* something recorded here? */ 2137 if (l_ea == 0) 2138 return ENOENT; 2139 2140 /* check extended attribute tag; what to do if it fails? */ 2141 error = udf_check_tag(eahdr); 2142 if (error) 2143 return EINVAL; 2144 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2145 return EINVAL; 2146 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2147 if (error) 2148 return EINVAL; 2149 2150 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2151 2152 /* looking for Ecma-167 attributes? */ 2153 offset = sizeof(struct extattrhdr_desc); 2154 2155 /* looking for either implemenation use or application use */ 2156 if (sattr == 2048) { /* [4/48.10.8] */ 2157 offset = udf_rw32(eahdr->impl_attr_loc); 2158 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2159 return ENOENT; 2160 } 2161 if (sattr == 65536) { /* [4/48.10.9] */ 2162 offset = udf_rw32(eahdr->appl_attr_loc); 2163 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2164 return ENOENT; 2165 } 2166 2167 /* paranoia check offset and l_ea */ 2168 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2169 return EINVAL; 2170 2171 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2172 2173 /* find our extended attribute */ 2174 l_ea -= offset; 2175 pos = (uint8_t *) eahdr + offset; 2176 2177 while (l_ea >= sizeof(struct extattr_entry)) { 2178 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2179 attrhdr = (struct extattr_entry *) pos; 2180 implext = (struct impl_extattr_entry *) pos; 2181 2182 /* get complete attribute length and check for roque values */ 2183 a_l = udf_rw32(attrhdr->a_l); 2184 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2185 udf_rw32(attrhdr->type), 2186 attrhdr->subtype, a_l, l_ea)); 2187 if ((a_l == 0) || (a_l > l_ea)) 2188 return EINVAL; 2189 2190 if (attrhdr->type != sattr) 2191 goto next_attribute; 2192 2193 /* we might have found it! */ 2194 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2195 *offsetp = offset; 2196 *lengthp = a_l; 2197 return 0; /* success */ 2198 } 2199 2200 /* 2201 * Implementation use and application use extended attributes 2202 * have a name to identify. They share the same structure only 2203 * UDF implementation use extended attributes have a checksum 2204 * we need to check 2205 */ 2206 2207 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2208 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2209 /* we have found our appl/implementation attribute */ 2210 *offsetp = offset; 2211 *lengthp = a_l; 2212 return 0; /* success */ 2213 } 2214 2215 next_attribute: 2216 /* next attribute */ 2217 pos += a_l; 2218 l_ea -= a_l; 2219 offset += a_l; 2220 } 2221 /* not found */ 2222 return ENOENT; 2223 } 2224 2225 2226 static void 2227 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2228 struct extattr_entry *extattr) 2229 { 2230 struct file_entry *fe; 2231 struct extfile_entry *efe; 2232 struct extattrhdr_desc *extattrhdr; 2233 struct impl_extattr_entry *implext; 2234 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2235 uint32_t *l_eap, l_ad; 2236 uint16_t *spos; 2237 uint8_t *bpos, *data; 2238 2239 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2240 fe = &dscr->fe; 2241 data = fe->data; 2242 l_eap = &fe->l_ea; 2243 l_ad = udf_rw32(fe->l_ad); 2244 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2245 efe = &dscr->efe; 2246 data = efe->data; 2247 l_eap = &efe->l_ea; 2248 l_ad = udf_rw32(efe->l_ad); 2249 } else { 2250 panic("Bad tag passed to udf_extattr_insert_internal"); 2251 } 2252 2253 /* can't append already written to file descriptors yet */ 2254 assert(l_ad == 0); 2255 2256 /* should have a header! */ 2257 extattrhdr = (struct extattrhdr_desc *) data; 2258 l_ea = udf_rw32(*l_eap); 2259 if (l_ea == 0) { 2260 /* create empty extended attribute header */ 2261 exthdr_len = sizeof(struct extattrhdr_desc); 2262 2263 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2264 /* loc */ 0); 2265 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2266 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2267 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2268 2269 /* record extended attribute header length */ 2270 l_ea = exthdr_len; 2271 *l_eap = udf_rw32(l_ea); 2272 } 2273 2274 /* extract locations */ 2275 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2276 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2277 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2278 impl_attr_loc = l_ea; 2279 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2280 appl_attr_loc = l_ea; 2281 2282 /* Ecma 167 EAs */ 2283 if (udf_rw32(extattr->type) < 2048) { 2284 assert(impl_attr_loc == l_ea); 2285 assert(appl_attr_loc == l_ea); 2286 } 2287 2288 /* implementation use extended attributes */ 2289 if (udf_rw32(extattr->type) == 2048) { 2290 assert(appl_attr_loc == l_ea); 2291 2292 /* calculate and write extended attribute header checksum */ 2293 implext = (struct impl_extattr_entry *) extattr; 2294 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2295 spos = (uint16_t *) implext->data; 2296 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2297 } 2298 2299 /* application use extended attributes */ 2300 assert(udf_rw32(extattr->type) != 65536); 2301 assert(appl_attr_loc == l_ea); 2302 2303 /* append the attribute at the end of the current space */ 2304 bpos = data + udf_rw32(*l_eap); 2305 a_l = udf_rw32(extattr->a_l); 2306 2307 /* update impl. attribute locations */ 2308 if (udf_rw32(extattr->type) < 2048) { 2309 impl_attr_loc = l_ea + a_l; 2310 appl_attr_loc = l_ea + a_l; 2311 } 2312 if (udf_rw32(extattr->type) == 2048) { 2313 appl_attr_loc = l_ea + a_l; 2314 } 2315 2316 /* copy and advance */ 2317 memcpy(bpos, extattr, a_l); 2318 l_ea += a_l; 2319 *l_eap = udf_rw32(l_ea); 2320 2321 /* do the `dance` again backwards */ 2322 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2323 if (impl_attr_loc == l_ea) 2324 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2325 if (appl_attr_loc == l_ea) 2326 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2327 } 2328 2329 /* store offsets */ 2330 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2331 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2332 } 2333 2334 2335 /* --------------------------------------------------------------------- */ 2336 2337 static int 2338 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2339 { 2340 struct udf_mount *ump; 2341 struct udf_logvol_info *lvinfo; 2342 struct impl_extattr_entry *implext; 2343 struct vatlvext_extattr_entry lvext; 2344 const char *extstr = "*UDF VAT LVExtension"; 2345 uint64_t vat_uniqueid; 2346 uint32_t offset, a_l; 2347 uint8_t *ea_start, *lvextpos; 2348 int error; 2349 2350 /* get mountpoint and lvinfo */ 2351 ump = vat_node->ump; 2352 lvinfo = ump->logvol_info; 2353 2354 /* get information from fe/efe */ 2355 if (vat_node->fe) { 2356 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2357 ea_start = vat_node->fe->data; 2358 } else { 2359 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2360 ea_start = vat_node->efe->data; 2361 } 2362 2363 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2364 if (error) 2365 return error; 2366 2367 implext = (struct impl_extattr_entry *) (ea_start + offset); 2368 error = udf_impl_extattr_check(implext); 2369 if (error) 2370 return error; 2371 2372 /* paranoia */ 2373 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2374 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2375 return EINVAL; 2376 } 2377 2378 /* 2379 * we have found our "VAT LVExtension attribute. BUT due to a 2380 * bug in the specification it might not be word aligned so 2381 * copy first to avoid panics on some machines (!!) 2382 */ 2383 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2384 lvextpos = implext->data + udf_rw32(implext->iu_l); 2385 memcpy(&lvext, lvextpos, sizeof(lvext)); 2386 2387 /* check if it was updated the last time */ 2388 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2389 lvinfo->num_files = lvext.num_files; 2390 lvinfo->num_directories = lvext.num_directories; 2391 udf_update_logvolname(ump, lvext.logvol_id); 2392 } else { 2393 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2394 /* replace VAT LVExt by free space EA */ 2395 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2396 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2397 udf_calc_impl_extattr_checksum(implext); 2398 } 2399 2400 return 0; 2401 } 2402 2403 2404 static int 2405 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2406 { 2407 struct udf_mount *ump; 2408 struct udf_logvol_info *lvinfo; 2409 struct impl_extattr_entry *implext; 2410 struct vatlvext_extattr_entry lvext; 2411 const char *extstr = "*UDF VAT LVExtension"; 2412 uint64_t vat_uniqueid; 2413 uint32_t offset, a_l; 2414 uint8_t *ea_start, *lvextpos; 2415 int error; 2416 2417 /* get mountpoint and lvinfo */ 2418 ump = vat_node->ump; 2419 lvinfo = ump->logvol_info; 2420 2421 /* get information from fe/efe */ 2422 if (vat_node->fe) { 2423 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2424 ea_start = vat_node->fe->data; 2425 } else { 2426 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2427 ea_start = vat_node->efe->data; 2428 } 2429 2430 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2431 if (error) 2432 return error; 2433 /* found, it existed */ 2434 2435 /* paranoia */ 2436 implext = (struct impl_extattr_entry *) (ea_start + offset); 2437 error = udf_impl_extattr_check(implext); 2438 if (error) { 2439 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2440 return error; 2441 } 2442 /* it is correct */ 2443 2444 /* 2445 * we have found our "VAT LVExtension attribute. BUT due to a 2446 * bug in the specification it might not be word aligned so 2447 * copy first to avoid panics on some machines (!!) 2448 */ 2449 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2450 lvextpos = implext->data + udf_rw32(implext->iu_l); 2451 2452 lvext.unique_id_chk = vat_uniqueid; 2453 lvext.num_files = lvinfo->num_files; 2454 lvext.num_directories = lvinfo->num_directories; 2455 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2456 2457 memcpy(lvextpos, &lvext, sizeof(lvext)); 2458 2459 return 0; 2460 } 2461 2462 /* --------------------------------------------------------------------- */ 2463 2464 int 2465 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2466 { 2467 struct udf_mount *ump = vat_node->ump; 2468 2469 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2470 return EINVAL; 2471 2472 memcpy(blob, ump->vat_table + offset, size); 2473 return 0; 2474 } 2475 2476 int 2477 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2478 { 2479 struct udf_mount *ump = vat_node->ump; 2480 uint32_t offset_high; 2481 uint8_t *new_vat_table; 2482 2483 /* extent VAT allocation if needed */ 2484 offset_high = offset + size; 2485 if (offset_high >= ump->vat_table_alloc_len) { 2486 /* realloc */ 2487 new_vat_table = realloc(ump->vat_table, 2488 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2489 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2490 if (!new_vat_table) { 2491 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2492 return ENOMEM; 2493 } 2494 ump->vat_table = new_vat_table; 2495 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2496 } 2497 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2498 2499 memcpy(ump->vat_table + offset, blob, size); 2500 return 0; 2501 } 2502 2503 /* --------------------------------------------------------------------- */ 2504 2505 /* TODO support previous VAT location writeout */ 2506 static int 2507 udf_update_vat_descriptor(struct udf_mount *ump) 2508 { 2509 struct udf_node *vat_node = ump->vat_node; 2510 struct udf_logvol_info *lvinfo = ump->logvol_info; 2511 struct icb_tag *icbtag; 2512 struct udf_oldvat_tail *oldvat_tl; 2513 struct udf_vat *vat; 2514 uint64_t unique_id; 2515 uint32_t lb_size; 2516 uint8_t *raw_vat; 2517 int filetype, error; 2518 2519 KASSERT(vat_node); 2520 KASSERT(lvinfo); 2521 lb_size = udf_rw32(ump->logical_vol->lb_size); 2522 2523 /* get our new unique_id */ 2524 unique_id = udf_advance_uniqueid(ump); 2525 2526 /* get information from fe/efe */ 2527 if (vat_node->fe) { 2528 icbtag = &vat_node->fe->icbtag; 2529 vat_node->fe->unique_id = udf_rw64(unique_id); 2530 } else { 2531 icbtag = &vat_node->efe->icbtag; 2532 vat_node->efe->unique_id = udf_rw64(unique_id); 2533 } 2534 2535 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2536 filetype = icbtag->file_type; 2537 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2538 2539 /* allocate piece to process head or tail of VAT file */ 2540 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2541 2542 if (filetype == 0) { 2543 /* 2544 * Update "*UDF VAT LVExtension" extended attribute from the 2545 * lvint if present. 2546 */ 2547 udf_update_vat_extattr_from_lvid(vat_node); 2548 2549 /* setup identifying regid */ 2550 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2551 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2552 2553 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2554 udf_add_udf_regid(ump, &oldvat_tl->id); 2555 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2556 2557 /* write out new tail of virtual allocation table file */ 2558 error = udf_vat_write(vat_node, raw_vat, 2559 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2560 } else { 2561 /* compose the VAT2 header */ 2562 vat = (struct udf_vat *) raw_vat; 2563 memset(vat, 0, sizeof(struct udf_vat)); 2564 2565 vat->header_len = udf_rw16(152); /* as per spec */ 2566 vat->impl_use_len = udf_rw16(0); 2567 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2568 vat->prev_vat = udf_rw32(0xffffffff); 2569 vat->num_files = lvinfo->num_files; 2570 vat->num_directories = lvinfo->num_directories; 2571 vat->min_udf_readver = lvinfo->min_udf_readver; 2572 vat->min_udf_writever = lvinfo->min_udf_writever; 2573 vat->max_udf_writever = lvinfo->max_udf_writever; 2574 2575 error = udf_vat_write(vat_node, raw_vat, 2576 sizeof(struct udf_vat), 0); 2577 } 2578 free(raw_vat, M_TEMP); 2579 2580 return error; /* success! */ 2581 } 2582 2583 2584 int 2585 udf_writeout_vat(struct udf_mount *ump) 2586 { 2587 struct udf_node *vat_node = ump->vat_node; 2588 uint32_t vat_length; 2589 int error; 2590 2591 KASSERT(vat_node); 2592 2593 DPRINTF(CALL, ("udf_writeout_vat\n")); 2594 2595 mutex_enter(&ump->allocate_mutex); 2596 udf_update_vat_descriptor(ump); 2597 2598 /* write out the VAT contents ; TODO intelligent writing */ 2599 vat_length = ump->vat_table_len; 2600 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2601 ump->vat_table, ump->vat_table_len, 0, 2602 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2603 if (error) { 2604 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2605 goto out; 2606 } 2607 2608 mutex_exit(&ump->allocate_mutex); 2609 2610 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2611 error = VOP_FSYNC(ump->vat_node->vnode, 2612 FSCRED, FSYNC_WAIT, 0, 0); 2613 if (error) 2614 printf("udf_writeout_vat: error writing VAT node!\n"); 2615 out: 2616 2617 return error; 2618 } 2619 2620 /* --------------------------------------------------------------------- */ 2621 2622 /* 2623 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2624 * descriptor. If OK, read in complete VAT file. 2625 */ 2626 2627 static int 2628 udf_check_for_vat(struct udf_node *vat_node) 2629 { 2630 struct udf_mount *ump; 2631 struct icb_tag *icbtag; 2632 struct timestamp *mtime; 2633 struct udf_vat *vat; 2634 struct udf_oldvat_tail *oldvat_tl; 2635 struct udf_logvol_info *lvinfo; 2636 uint64_t unique_id; 2637 uint32_t vat_length; 2638 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2639 uint32_t sector_size; 2640 uint32_t *raw_vat; 2641 uint8_t *vat_table; 2642 char *regid_name; 2643 int filetype; 2644 int error; 2645 2646 /* vat_length is really 64 bits though impossible */ 2647 2648 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2649 if (!vat_node) 2650 return ENOENT; 2651 2652 /* get mount info */ 2653 ump = vat_node->ump; 2654 sector_size = udf_rw32(ump->logical_vol->lb_size); 2655 2656 /* check assertions */ 2657 assert(vat_node->fe || vat_node->efe); 2658 assert(ump->logvol_integrity); 2659 2660 /* set vnode type to regular file or we can't read from it! */ 2661 vat_node->vnode->v_type = VREG; 2662 2663 /* get information from fe/efe */ 2664 if (vat_node->fe) { 2665 vat_length = udf_rw64(vat_node->fe->inf_len); 2666 icbtag = &vat_node->fe->icbtag; 2667 mtime = &vat_node->fe->mtime; 2668 unique_id = udf_rw64(vat_node->fe->unique_id); 2669 } else { 2670 vat_length = udf_rw64(vat_node->efe->inf_len); 2671 icbtag = &vat_node->efe->icbtag; 2672 mtime = &vat_node->efe->mtime; 2673 unique_id = udf_rw64(vat_node->efe->unique_id); 2674 } 2675 2676 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2677 filetype = icbtag->file_type; 2678 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2679 return ENOENT; 2680 2681 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2682 2683 vat_table_alloc_len = 2684 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2685 * UDF_VAT_CHUNKSIZE; 2686 2687 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2688 M_CANFAIL | M_WAITOK); 2689 if (vat_table == NULL) { 2690 printf("allocation of %d bytes failed for VAT\n", 2691 vat_table_alloc_len); 2692 return ENOMEM; 2693 } 2694 2695 /* allocate piece to read in head or tail of VAT file */ 2696 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2697 2698 /* 2699 * check contents of the file if its the old 1.50 VAT table format. 2700 * Its notoriously broken and allthough some implementations support an 2701 * extention as defined in the UDF 1.50 errata document, its doubtfull 2702 * to be useable since a lot of implementations don't maintain it. 2703 */ 2704 lvinfo = ump->logvol_info; 2705 2706 if (filetype == 0) { 2707 /* definition */ 2708 vat_offset = 0; 2709 vat_entries = (vat_length-36)/4; 2710 2711 /* read in tail of virtual allocation table file */ 2712 error = vn_rdwr(UIO_READ, vat_node->vnode, 2713 (uint8_t *) raw_vat, 2714 sizeof(struct udf_oldvat_tail), 2715 vat_entries * 4, 2716 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2717 NULL, NULL); 2718 if (error) 2719 goto out; 2720 2721 /* check 1.50 VAT */ 2722 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2723 regid_name = (char *) oldvat_tl->id.id; 2724 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2725 if (error) { 2726 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2727 error = ENOENT; 2728 goto out; 2729 } 2730 2731 /* 2732 * update LVID from "*UDF VAT LVExtension" extended attribute 2733 * if present. 2734 */ 2735 udf_update_lvid_from_vat_extattr(vat_node); 2736 } else { 2737 /* read in head of virtual allocation table file */ 2738 error = vn_rdwr(UIO_READ, vat_node->vnode, 2739 (uint8_t *) raw_vat, 2740 sizeof(struct udf_vat), 0, 2741 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2742 NULL, NULL); 2743 if (error) 2744 goto out; 2745 2746 /* definition */ 2747 vat = (struct udf_vat *) raw_vat; 2748 vat_offset = vat->header_len; 2749 vat_entries = (vat_length - vat_offset)/4; 2750 2751 assert(lvinfo); 2752 lvinfo->num_files = vat->num_files; 2753 lvinfo->num_directories = vat->num_directories; 2754 lvinfo->min_udf_readver = vat->min_udf_readver; 2755 lvinfo->min_udf_writever = vat->min_udf_writever; 2756 lvinfo->max_udf_writever = vat->max_udf_writever; 2757 2758 udf_update_logvolname(ump, vat->logvol_id); 2759 } 2760 2761 /* read in complete VAT file */ 2762 error = vn_rdwr(UIO_READ, vat_node->vnode, 2763 vat_table, 2764 vat_length, 0, 2765 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2766 NULL, NULL); 2767 if (error) 2768 printf("read in of complete VAT file failed (error %d)\n", 2769 error); 2770 if (error) 2771 goto out; 2772 2773 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2774 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2775 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2776 ump->logvol_integrity->time = *mtime; 2777 2778 ump->vat_table_len = vat_length; 2779 ump->vat_table_alloc_len = vat_table_alloc_len; 2780 ump->vat_table = vat_table; 2781 ump->vat_offset = vat_offset; 2782 ump->vat_entries = vat_entries; 2783 ump->vat_last_free_lb = 0; /* start at beginning */ 2784 2785 out: 2786 if (error) { 2787 if (vat_table) 2788 free(vat_table, M_UDFVOLD); 2789 } 2790 free(raw_vat, M_TEMP); 2791 2792 return error; 2793 } 2794 2795 /* --------------------------------------------------------------------- */ 2796 2797 static int 2798 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2799 { 2800 struct udf_node *vat_node; 2801 struct long_ad icb_loc; 2802 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2803 int error; 2804 2805 /* mapping info not needed */ 2806 mapping = mapping; 2807 2808 vat_loc = ump->last_possible_vat_location; 2809 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2810 2811 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2812 vat_loc, early_vat_loc)); 2813 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2814 late_vat_loc = vat_loc + 1024; 2815 2816 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2817 vat_loc, early_vat_loc)); 2818 2819 /* start looking from the end of the range */ 2820 do { 2821 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2822 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2823 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2824 2825 error = udf_get_node(ump, &icb_loc, &vat_node); 2826 if (!error) { 2827 error = udf_check_for_vat(vat_node); 2828 DPRINTFIF(VOLUMES, !error, 2829 ("VAT accepted at %d\n", vat_loc)); 2830 if (!error) 2831 break; 2832 } 2833 if (vat_node) { 2834 vput(vat_node->vnode); 2835 vat_node = NULL; 2836 } 2837 vat_loc--; /* walk backwards */ 2838 } while (vat_loc >= early_vat_loc); 2839 2840 /* keep our VAT node around */ 2841 if (vat_node) { 2842 UDF_SET_SYSTEMFILE(vat_node->vnode); 2843 ump->vat_node = vat_node; 2844 } 2845 2846 return error; 2847 } 2848 2849 /* --------------------------------------------------------------------- */ 2850 2851 static int 2852 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2853 { 2854 union dscrptr *dscr; 2855 struct part_map_spare *pms = &mapping->pms; 2856 uint32_t lb_num; 2857 int spar, error; 2858 2859 /* 2860 * The partition mapping passed on to us specifies the information we 2861 * need to locate and initialise the sparable partition mapping 2862 * information we need. 2863 */ 2864 2865 DPRINTF(VOLUMES, ("Read sparable table\n")); 2866 ump->sparable_packet_size = udf_rw16(pms->packet_len); 2867 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 2868 2869 for (spar = 0; spar < pms->n_st; spar++) { 2870 lb_num = pms->st_loc[spar]; 2871 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 2872 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 2873 if (!error && dscr) { 2874 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 2875 if (ump->sparing_table) 2876 free(ump->sparing_table, M_UDFVOLD); 2877 ump->sparing_table = &dscr->spt; 2878 dscr = NULL; 2879 DPRINTF(VOLUMES, 2880 ("Sparing table accepted (%d entries)\n", 2881 udf_rw16(ump->sparing_table->rt_l))); 2882 break; /* we're done */ 2883 } 2884 } 2885 if (dscr) 2886 free(dscr, M_UDFVOLD); 2887 } 2888 2889 if (ump->sparing_table) 2890 return 0; 2891 2892 return ENOENT; 2893 } 2894 2895 /* --------------------------------------------------------------------- */ 2896 2897 static int 2898 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 2899 { 2900 struct part_map_meta *pmm = &mapping->pmm; 2901 struct long_ad icb_loc; 2902 struct vnode *vp; 2903 int error; 2904 2905 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 2906 icb_loc.loc.part_num = pmm->part_num; 2907 icb_loc.loc.lb_num = pmm->meta_file_lbn; 2908 DPRINTF(VOLUMES, ("Metadata file\n")); 2909 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 2910 if (ump->metadata_node) { 2911 vp = ump->metadata_node->vnode; 2912 UDF_SET_SYSTEMFILE(vp); 2913 } 2914 2915 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 2916 if (icb_loc.loc.lb_num != -1) { 2917 DPRINTF(VOLUMES, ("Metadata copy file\n")); 2918 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 2919 if (ump->metadatamirror_node) { 2920 vp = ump->metadatamirror_node->vnode; 2921 UDF_SET_SYSTEMFILE(vp); 2922 } 2923 } 2924 2925 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 2926 if (icb_loc.loc.lb_num != -1) { 2927 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 2928 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 2929 if (ump->metadatabitmap_node) { 2930 vp = ump->metadatabitmap_node->vnode; 2931 UDF_SET_SYSTEMFILE(vp); 2932 } 2933 } 2934 2935 /* if we're mounting read-only we relax the requirements */ 2936 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 2937 error = EFAULT; 2938 if (ump->metadata_node) 2939 error = 0; 2940 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 2941 printf( "udf mount: Metadata file not readable, " 2942 "substituting Metadata copy file\n"); 2943 ump->metadata_node = ump->metadatamirror_node; 2944 ump->metadatamirror_node = NULL; 2945 error = 0; 2946 } 2947 } else { 2948 /* mounting read/write */ 2949 /* if (error) */ 2950 error = EROFS; 2951 } 2952 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 2953 "metadata files\n")); 2954 return error; 2955 } 2956 2957 /* --------------------------------------------------------------------- */ 2958 2959 int 2960 udf_read_vds_tables(struct udf_mount *ump) 2961 { 2962 union udf_pmap *mapping; 2963 /* struct udf_args *args = &ump->mount_args; */ 2964 uint32_t n_pm, mt_l; 2965 uint32_t log_part; 2966 uint8_t *pmap_pos; 2967 int pmap_size; 2968 int error; 2969 2970 /* Iterate again over the part mappings for locations */ 2971 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 2972 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 2973 pmap_pos = ump->logical_vol->maps; 2974 2975 for (log_part = 0; log_part < n_pm; log_part++) { 2976 mapping = (union udf_pmap *) pmap_pos; 2977 switch (ump->vtop_tp[log_part]) { 2978 case UDF_VTOP_TYPE_PHYS : 2979 /* nothing */ 2980 break; 2981 case UDF_VTOP_TYPE_VIRT : 2982 /* search and load VAT */ 2983 error = udf_search_vat(ump, mapping); 2984 if (error) 2985 return ENOENT; 2986 break; 2987 case UDF_VTOP_TYPE_SPARABLE : 2988 /* load one of the sparable tables */ 2989 error = udf_read_sparables(ump, mapping); 2990 if (error) 2991 return ENOENT; 2992 break; 2993 case UDF_VTOP_TYPE_META : 2994 /* load the associated file descriptors */ 2995 error = udf_read_metadata_nodes(ump, mapping); 2996 if (error) 2997 return ENOENT; 2998 break; 2999 default: 3000 break; 3001 } 3002 pmap_size = pmap_pos[1]; 3003 pmap_pos += pmap_size; 3004 } 3005 3006 return 0; 3007 } 3008 3009 /* --------------------------------------------------------------------- */ 3010 3011 int 3012 udf_read_rootdirs(struct udf_mount *ump) 3013 { 3014 union dscrptr *dscr; 3015 /* struct udf_args *args = &ump->mount_args; */ 3016 struct udf_node *rootdir_node, *streamdir_node; 3017 struct long_ad fsd_loc, *dir_loc; 3018 uint32_t lb_num, dummy; 3019 uint32_t fsd_len; 3020 int dscr_type; 3021 int error; 3022 3023 /* TODO implement FSD reading in separate function like integrity? */ 3024 /* get fileset descriptor sequence */ 3025 fsd_loc = ump->logical_vol->lv_fsd_loc; 3026 fsd_len = udf_rw32(fsd_loc.len); 3027 3028 dscr = NULL; 3029 error = 0; 3030 while (fsd_len || error) { 3031 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3032 /* translate fsd_loc to lb_num */ 3033 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3034 if (error) 3035 break; 3036 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3037 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3038 /* end markers */ 3039 if (error || (dscr == NULL)) 3040 break; 3041 3042 /* analyse */ 3043 dscr_type = udf_rw16(dscr->tag.id); 3044 if (dscr_type == TAGID_TERM) 3045 break; 3046 if (dscr_type != TAGID_FSD) { 3047 free(dscr, M_UDFVOLD); 3048 return ENOENT; 3049 } 3050 3051 /* 3052 * TODO check for multiple fileset descriptors; its only 3053 * picking the last now. Also check for FSD 3054 * correctness/interpretability 3055 */ 3056 3057 /* update */ 3058 if (ump->fileset_desc) { 3059 free(ump->fileset_desc, M_UDFVOLD); 3060 } 3061 ump->fileset_desc = &dscr->fsd; 3062 dscr = NULL; 3063 3064 /* continue to the next fsd */ 3065 fsd_len -= ump->discinfo.sector_size; 3066 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3067 3068 /* follow up to fsd->next_ex (long_ad) if its not null */ 3069 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3070 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3071 fsd_loc = ump->fileset_desc->next_ex; 3072 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3073 } 3074 } 3075 if (dscr) 3076 free(dscr, M_UDFVOLD); 3077 3078 /* there has to be one */ 3079 if (ump->fileset_desc == NULL) 3080 return ENOENT; 3081 3082 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3083 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3084 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3085 3086 /* 3087 * Now the FSD is known, read in the rootdirectory and if one exists, 3088 * the system stream dir. Some files in the system streamdir are not 3089 * wanted in this implementation since they are not maintained. If 3090 * writing is enabled we'll delete these files if they exist. 3091 */ 3092 3093 rootdir_node = streamdir_node = NULL; 3094 dir_loc = NULL; 3095 3096 /* try to read in the rootdir */ 3097 dir_loc = &ump->fileset_desc->rootdir_icb; 3098 error = udf_get_node(ump, dir_loc, &rootdir_node); 3099 if (error) 3100 return ENOENT; 3101 3102 /* aparently it read in fine */ 3103 3104 /* 3105 * Try the system stream directory; not very likely in the ones we 3106 * test, but for completeness. 3107 */ 3108 dir_loc = &ump->fileset_desc->streamdir_icb; 3109 if (udf_rw32(dir_loc->len)) { 3110 printf("udf_read_rootdirs: streamdir defined "); 3111 error = udf_get_node(ump, dir_loc, &streamdir_node); 3112 if (error) { 3113 printf("but error in streamdir reading\n"); 3114 } else { 3115 printf("but ignored\n"); 3116 /* 3117 * TODO process streamdir `baddies' i.e. files we dont 3118 * want if R/W 3119 */ 3120 } 3121 } 3122 3123 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3124 3125 /* release the vnodes again; they'll be auto-recycled later */ 3126 if (streamdir_node) { 3127 vput(streamdir_node->vnode); 3128 } 3129 if (rootdir_node) { 3130 vput(rootdir_node->vnode); 3131 } 3132 3133 return 0; 3134 } 3135 3136 /* --------------------------------------------------------------------- */ 3137 3138 /* To make absolutely sure we are NOT returning zero, add one :) */ 3139 3140 long 3141 udf_calchash(struct long_ad *icbptr) 3142 { 3143 /* ought to be enough since each mountpoint has its own chain */ 3144 return udf_rw32(icbptr->loc.lb_num) + 1; 3145 } 3146 3147 3148 static struct udf_node * 3149 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3150 { 3151 struct udf_node *node; 3152 struct vnode *vp; 3153 uint32_t hashline; 3154 3155 loop: 3156 mutex_enter(&ump->ihash_lock); 3157 3158 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3159 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3160 assert(node); 3161 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3162 node->loc.loc.part_num == icbptr->loc.part_num) { 3163 vp = node->vnode; 3164 assert(vp); 3165 mutex_enter(&vp->v_interlock); 3166 mutex_exit(&ump->ihash_lock); 3167 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3168 goto loop; 3169 return node; 3170 } 3171 } 3172 mutex_exit(&ump->ihash_lock); 3173 3174 return NULL; 3175 } 3176 3177 3178 static void 3179 udf_sorted_list_insert(struct udf_node *node) 3180 { 3181 struct udf_mount *ump; 3182 struct udf_node *s_node, *last_node; 3183 uint32_t loc, s_loc; 3184 3185 ump = node->ump; 3186 last_node = NULL; /* XXX gcc */ 3187 3188 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3189 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3190 return; 3191 } 3192 3193 /* 3194 * We sort on logical block number here and not on physical block 3195 * number here. Ideally we should go for the physical block nr to get 3196 * better sync performance though this sort will ensure that packets 3197 * won't get spit up unnessisarily. 3198 */ 3199 3200 loc = udf_rw32(node->loc.loc.lb_num); 3201 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3202 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3203 if (s_loc > loc) { 3204 LIST_INSERT_BEFORE(s_node, node, sortchain); 3205 return; 3206 } 3207 last_node = s_node; 3208 } 3209 LIST_INSERT_AFTER(last_node, node, sortchain); 3210 } 3211 3212 3213 static void 3214 udf_register_node(struct udf_node *node) 3215 { 3216 struct udf_mount *ump; 3217 struct udf_node *chk; 3218 uint32_t hashline; 3219 3220 ump = node->ump; 3221 mutex_enter(&ump->ihash_lock); 3222 3223 /* add to our hash table */ 3224 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3225 #ifdef DEBUG 3226 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3227 assert(chk); 3228 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3229 chk->loc.loc.part_num == node->loc.loc.part_num) 3230 panic("Double node entered\n"); 3231 } 3232 #else 3233 chk = NULL; 3234 #endif 3235 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3236 3237 /* add to our sorted list */ 3238 udf_sorted_list_insert(node); 3239 3240 mutex_exit(&ump->ihash_lock); 3241 } 3242 3243 3244 static void 3245 udf_deregister_node(struct udf_node *node) 3246 { 3247 struct udf_mount *ump; 3248 3249 ump = node->ump; 3250 mutex_enter(&ump->ihash_lock); 3251 3252 /* from hash and sorted list */ 3253 LIST_REMOVE(node, hashchain); 3254 LIST_REMOVE(node, sortchain); 3255 3256 mutex_exit(&ump->ihash_lock); 3257 } 3258 3259 /* --------------------------------------------------------------------- */ 3260 3261 int 3262 udf_open_logvol(struct udf_mount *ump) 3263 { 3264 int logvol_integrity; 3265 int error; 3266 3267 /* already/still open? */ 3268 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3269 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3270 return 0; 3271 3272 /* can we open it ? */ 3273 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3274 return EROFS; 3275 3276 /* setup write parameters */ 3277 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3278 if ((error = udf_setup_writeparams(ump)) != 0) 3279 return error; 3280 3281 /* determine data and metadata tracks (most likely same) */ 3282 error = udf_search_writing_tracks(ump); 3283 if (error) { 3284 /* most likely lack of space */ 3285 printf("udf_open_logvol: error searching writing tracks\n"); 3286 return EROFS; 3287 } 3288 3289 /* writeout/update lvint on disc or only in memory */ 3290 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3291 if (ump->lvopen & UDF_OPEN_SESSION) { 3292 /* TODO implement writeout of VRS + VDS */ 3293 printf( "udf_open_logvol:Opening a closed session not yet " 3294 "implemented\n"); 3295 return EROFS; 3296 3297 /* determine data and metadata tracks again */ 3298 error = udf_search_writing_tracks(ump); 3299 } 3300 3301 /* mark it open */ 3302 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3303 3304 /* do we need to write it out? */ 3305 if (ump->lvopen & UDF_WRITE_LVINT) { 3306 error = udf_writeout_lvint(ump, ump->lvopen); 3307 /* if we couldn't write it mark it closed again */ 3308 if (error) { 3309 ump->logvol_integrity->integrity_type = 3310 udf_rw32(UDF_INTEGRITY_CLOSED); 3311 return error; 3312 } 3313 } 3314 3315 return 0; 3316 } 3317 3318 3319 int 3320 udf_close_logvol(struct udf_mount *ump, int mntflags) 3321 { 3322 int logvol_integrity; 3323 int error = 0; 3324 int n; 3325 3326 /* already/still closed? */ 3327 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3328 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3329 return 0; 3330 3331 /* writeout/update lvint or write out VAT */ 3332 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3333 if (ump->lvclose & UDF_WRITE_VAT) { 3334 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3335 3336 /* preprocess the VAT node; its modified on every writeout */ 3337 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3338 udf_update_vat_descriptor(ump->vat_node->ump); 3339 3340 /* write out the VAT node */ 3341 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3342 for (n = 0; n < 16; n++) { 3343 ump->vat_node->i_flags |= IN_MODIFIED; 3344 error = VOP_FSYNC(ump->vat_node->vnode, 3345 FSCRED, FSYNC_WAIT, 0, 0); 3346 } 3347 if (error) { 3348 printf("udf_close_logvol: writeout of VAT failed\n"); 3349 return error; 3350 } 3351 } 3352 3353 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3354 error = udf_write_partition_spacetables(ump, 1 /* waitfor */); 3355 if (error) { 3356 printf( "udf_close_logvol: writeout of space tables " 3357 "failed\n"); 3358 return error; 3359 } 3360 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3361 } 3362 3363 if (ump->lvclose & UDF_CLOSE_SESSION) { 3364 printf("TODO: Closing a session is not yet implemented\n"); 3365 return EROFS; 3366 ump->lvopen |= UDF_OPEN_SESSION; 3367 } 3368 3369 /* mark it closed */ 3370 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3371 3372 /* do we need to write out the logical volume integrity */ 3373 if (ump->lvclose & UDF_WRITE_LVINT) 3374 error = udf_writeout_lvint(ump, ump->lvopen); 3375 if (error) { 3376 /* HELP now what? mark it open again for now */ 3377 ump->logvol_integrity->integrity_type = 3378 udf_rw32(UDF_INTEGRITY_OPEN); 3379 return error; 3380 } 3381 3382 (void) udf_synchronise_caches(ump); 3383 3384 return 0; 3385 } 3386 3387 /* --------------------------------------------------------------------- */ 3388 3389 /* 3390 * Genfs interfacing 3391 * 3392 * static const struct genfs_ops udf_genfsops = { 3393 * .gop_size = genfs_size, 3394 * size of transfers 3395 * .gop_alloc = udf_gop_alloc, 3396 * allocate len bytes at offset 3397 * .gop_write = genfs_gop_write, 3398 * putpages interface code 3399 * .gop_markupdate = udf_gop_markupdate, 3400 * set update/modify flags etc. 3401 * } 3402 */ 3403 3404 /* 3405 * Genfs interface. These four functions are the only ones defined though not 3406 * documented... great.... 3407 */ 3408 3409 /* 3410 * Callback from genfs to allocate len bytes at offset off; only called when 3411 * filling up gaps in the allocation. 3412 */ 3413 /* XXX should we check if there is space enough in udf_gop_alloc? */ 3414 static int 3415 udf_gop_alloc(struct vnode *vp, off_t off, 3416 off_t len, int flags, kauth_cred_t cred) 3417 { 3418 #if 0 3419 struct udf_node *udf_node = VTOI(vp); 3420 struct udf_mount *ump = udf_node->ump; 3421 uint32_t lb_size, num_lb; 3422 #endif 3423 3424 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3425 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3426 3427 return 0; 3428 } 3429 3430 3431 /* 3432 * callback from genfs to update our flags 3433 */ 3434 static void 3435 udf_gop_markupdate(struct vnode *vp, int flags) 3436 { 3437 struct udf_node *udf_node = VTOI(vp); 3438 u_long mask = 0; 3439 3440 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3441 mask = IN_ACCESS; 3442 } 3443 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3444 if (vp->v_type == VREG) { 3445 mask |= IN_CHANGE | IN_UPDATE; 3446 } else { 3447 mask |= IN_MODIFY; 3448 } 3449 } 3450 if (mask) { 3451 udf_node->i_flags |= mask; 3452 } 3453 } 3454 3455 3456 static const struct genfs_ops udf_genfsops = { 3457 .gop_size = genfs_size, 3458 .gop_alloc = udf_gop_alloc, 3459 .gop_write = genfs_gop_write_rwmap, 3460 .gop_markupdate = udf_gop_markupdate, 3461 }; 3462 3463 3464 /* --------------------------------------------------------------------- */ 3465 3466 int 3467 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3468 { 3469 union dscrptr *dscr; 3470 int error; 3471 3472 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3473 bzero(dscr, ump->discinfo.sector_size); 3474 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3475 3476 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3477 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3478 (void) udf_validate_tag_and_crc_sums(dscr); 3479 3480 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3481 dscr, sector, sector); 3482 3483 free(dscr, M_TEMP); 3484 3485 return error; 3486 } 3487 3488 3489 /* --------------------------------------------------------------------- */ 3490 3491 /* UDF<->unix converters */ 3492 3493 /* --------------------------------------------------------------------- */ 3494 3495 static mode_t 3496 udf_perm_to_unix_mode(uint32_t perm) 3497 { 3498 mode_t mode; 3499 3500 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3501 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3502 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3503 3504 return mode; 3505 } 3506 3507 /* --------------------------------------------------------------------- */ 3508 3509 static uint32_t 3510 unix_mode_to_udf_perm(mode_t mode) 3511 { 3512 uint32_t perm; 3513 3514 perm = ((mode & S_IRWXO) ); 3515 perm |= ((mode & S_IRWXG) << 2); 3516 perm |= ((mode & S_IRWXU) << 4); 3517 perm |= ((mode & S_IWOTH) << 3); 3518 perm |= ((mode & S_IWGRP) << 5); 3519 perm |= ((mode & S_IWUSR) << 7); 3520 3521 return perm; 3522 } 3523 3524 /* --------------------------------------------------------------------- */ 3525 3526 static uint32_t 3527 udf_icb_to_unix_filetype(uint32_t icbftype) 3528 { 3529 switch (icbftype) { 3530 case UDF_ICB_FILETYPE_DIRECTORY : 3531 case UDF_ICB_FILETYPE_STREAMDIR : 3532 return S_IFDIR; 3533 case UDF_ICB_FILETYPE_FIFO : 3534 return S_IFIFO; 3535 case UDF_ICB_FILETYPE_CHARDEVICE : 3536 return S_IFCHR; 3537 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3538 return S_IFBLK; 3539 case UDF_ICB_FILETYPE_RANDOMACCESS : 3540 case UDF_ICB_FILETYPE_REALTIME : 3541 return S_IFREG; 3542 case UDF_ICB_FILETYPE_SYMLINK : 3543 return S_IFLNK; 3544 case UDF_ICB_FILETYPE_SOCKET : 3545 return S_IFSOCK; 3546 } 3547 /* no idea what this is */ 3548 return 0; 3549 } 3550 3551 /* --------------------------------------------------------------------- */ 3552 3553 void 3554 udf_to_unix_name(char *result, int result_len, char *id, int len, 3555 struct charspec *chsp) 3556 { 3557 uint16_t *raw_name, *unix_name; 3558 uint16_t *inchp, ch; 3559 uint8_t *outchp; 3560 const char *osta_id = "OSTA Compressed Unicode"; 3561 int ucode_chars, nice_uchars, is_osta_typ0, nout; 3562 3563 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3564 unix_name = raw_name + 1024; /* split space in half */ 3565 assert(sizeof(char) == sizeof(uint8_t)); 3566 outchp = (uint8_t *) result; 3567 3568 is_osta_typ0 = (chsp->type == 0); 3569 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3570 if (is_osta_typ0) { 3571 /* TODO clean up */ 3572 *raw_name = *unix_name = 0; 3573 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3574 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3575 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3576 /* output UTF8 */ 3577 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3578 ch = *inchp; 3579 nout = wput_utf8(outchp, result_len, ch); 3580 outchp += nout; result_len -= nout; 3581 if (!ch) break; 3582 } 3583 *outchp++ = 0; 3584 } else { 3585 /* assume 8bit char length byte latin-1 */ 3586 assert(*id == 8); 3587 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 3588 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3589 } 3590 free(raw_name, M_UDFTEMP); 3591 } 3592 3593 /* --------------------------------------------------------------------- */ 3594 3595 void 3596 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3597 struct charspec *chsp) 3598 { 3599 uint16_t *raw_name; 3600 uint16_t *outchp; 3601 const char *inchp; 3602 const char *osta_id = "OSTA Compressed Unicode"; 3603 int udf_chars, is_osta_typ0, bits; 3604 size_t cnt; 3605 3606 /* allocate temporary unicode-16 buffer */ 3607 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3608 3609 /* convert utf8 to unicode-16 */ 3610 *raw_name = 0; 3611 inchp = name; 3612 outchp = raw_name; 3613 bits = 8; 3614 for (cnt = name_len, udf_chars = 0; cnt;) { 3615 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 3616 *outchp = wget_utf8(&inchp, &cnt); 3617 if (*outchp > 0xff) 3618 bits=16; 3619 outchp++; 3620 udf_chars++; 3621 } 3622 /* null terminate just in case */ 3623 *outchp++ = 0; 3624 3625 is_osta_typ0 = (chsp->type == 0); 3626 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3627 if (is_osta_typ0) { 3628 udf_chars = udf_CompressUnicode(udf_chars, bits, 3629 (unicode_t *) raw_name, 3630 (byte *) result); 3631 } else { 3632 printf("unix to udf name: no CHSP0 ?\n"); 3633 /* XXX assume 8bit char length byte latin-1 */ 3634 *result++ = 8; udf_chars = 1; 3635 strncpy(result, name + 1, name_len); 3636 udf_chars += name_len; 3637 } 3638 *result_len = udf_chars; 3639 free(raw_name, M_UDFTEMP); 3640 } 3641 3642 /* --------------------------------------------------------------------- */ 3643 3644 void 3645 udf_timestamp_to_timespec(struct udf_mount *ump, 3646 struct timestamp *timestamp, 3647 struct timespec *timespec) 3648 { 3649 struct clock_ymdhms ymdhms; 3650 uint32_t usecs, secs, nsecs; 3651 uint16_t tz; 3652 3653 /* fill in ymdhms structure from timestamp */ 3654 memset(&ymdhms, 0, sizeof(ymdhms)); 3655 ymdhms.dt_year = udf_rw16(timestamp->year); 3656 ymdhms.dt_mon = timestamp->month; 3657 ymdhms.dt_day = timestamp->day; 3658 ymdhms.dt_wday = 0; /* ? */ 3659 ymdhms.dt_hour = timestamp->hour; 3660 ymdhms.dt_min = timestamp->minute; 3661 ymdhms.dt_sec = timestamp->second; 3662 3663 secs = clock_ymdhms_to_secs(&ymdhms); 3664 usecs = timestamp->usec + 3665 100*timestamp->hund_usec + 10000*timestamp->centisec; 3666 nsecs = usecs * 1000; 3667 3668 /* 3669 * Calculate the time zone. The timezone is 12 bit signed 2's 3670 * compliment, so we gotta do some extra magic to handle it right. 3671 */ 3672 tz = udf_rw16(timestamp->type_tz); 3673 tz &= 0x0fff; /* only lower 12 bits are significant */ 3674 if (tz & 0x0800) /* sign extention */ 3675 tz |= 0xf000; 3676 3677 /* TODO check timezone conversion */ 3678 /* check if we are specified a timezone to convert */ 3679 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3680 if ((int16_t) tz != -2047) 3681 secs -= (int16_t) tz * 60; 3682 } else { 3683 secs -= ump->mount_args.gmtoff; 3684 } 3685 3686 timespec->tv_sec = secs; 3687 timespec->tv_nsec = nsecs; 3688 } 3689 3690 3691 void 3692 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3693 { 3694 struct clock_ymdhms ymdhms; 3695 uint32_t husec, usec, csec; 3696 3697 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3698 3699 usec = timespec->tv_nsec / 1000; 3700 husec = usec / 100; 3701 usec -= husec * 100; /* only 0-99 in usec */ 3702 csec = husec / 100; /* only 0-99 in csec */ 3703 husec -= csec * 100; /* only 0-99 in husec */ 3704 3705 /* set method 1 for CUT/GMT */ 3706 timestamp->type_tz = udf_rw16((1<<12) + 0); 3707 timestamp->year = udf_rw16(ymdhms.dt_year); 3708 timestamp->month = ymdhms.dt_mon; 3709 timestamp->day = ymdhms.dt_day; 3710 timestamp->hour = ymdhms.dt_hour; 3711 timestamp->minute = ymdhms.dt_min; 3712 timestamp->second = ymdhms.dt_sec; 3713 timestamp->centisec = csec; 3714 timestamp->hund_usec = husec; 3715 timestamp->usec = usec; 3716 } 3717 3718 /* --------------------------------------------------------------------- */ 3719 3720 /* 3721 * Attribute and filetypes converters with get/set pairs 3722 */ 3723 3724 uint32_t 3725 udf_getaccessmode(struct udf_node *udf_node) 3726 { 3727 struct file_entry *fe = udf_node->fe;; 3728 struct extfile_entry *efe = udf_node->efe; 3729 uint32_t udf_perm, icbftype; 3730 uint32_t mode, ftype; 3731 uint16_t icbflags; 3732 3733 UDF_LOCK_NODE(udf_node, 0); 3734 if (fe) { 3735 udf_perm = udf_rw32(fe->perm); 3736 icbftype = fe->icbtag.file_type; 3737 icbflags = udf_rw16(fe->icbtag.flags); 3738 } else { 3739 assert(udf_node->efe); 3740 udf_perm = udf_rw32(efe->perm); 3741 icbftype = efe->icbtag.file_type; 3742 icbflags = udf_rw16(efe->icbtag.flags); 3743 } 3744 3745 mode = udf_perm_to_unix_mode(udf_perm); 3746 ftype = udf_icb_to_unix_filetype(icbftype); 3747 3748 /* set suid, sgid, sticky from flags in fe/efe */ 3749 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3750 mode |= S_ISUID; 3751 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3752 mode |= S_ISGID; 3753 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3754 mode |= S_ISVTX; 3755 3756 UDF_UNLOCK_NODE(udf_node, 0); 3757 3758 return mode | ftype; 3759 } 3760 3761 3762 void 3763 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3764 { 3765 struct file_entry *fe = udf_node->fe; 3766 struct extfile_entry *efe = udf_node->efe; 3767 uint32_t udf_perm; 3768 uint16_t icbflags; 3769 3770 UDF_LOCK_NODE(udf_node, 0); 3771 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3772 if (fe) { 3773 icbflags = udf_rw16(fe->icbtag.flags); 3774 } else { 3775 icbflags = udf_rw16(efe->icbtag.flags); 3776 } 3777 3778 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3779 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3780 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3781 if (mode & S_ISUID) 3782 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3783 if (mode & S_ISGID) 3784 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3785 if (mode & S_ISVTX) 3786 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3787 3788 if (fe) { 3789 fe->perm = udf_rw32(udf_perm); 3790 fe->icbtag.flags = udf_rw16(icbflags); 3791 } else { 3792 efe->perm = udf_rw32(udf_perm); 3793 efe->icbtag.flags = udf_rw16(icbflags); 3794 } 3795 3796 UDF_UNLOCK_NODE(udf_node, 0); 3797 } 3798 3799 3800 void 3801 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3802 { 3803 struct udf_mount *ump = udf_node->ump; 3804 struct file_entry *fe = udf_node->fe; 3805 struct extfile_entry *efe = udf_node->efe; 3806 uid_t uid; 3807 gid_t gid; 3808 3809 UDF_LOCK_NODE(udf_node, 0); 3810 if (fe) { 3811 uid = (uid_t)udf_rw32(fe->uid); 3812 gid = (gid_t)udf_rw32(fe->gid); 3813 } else { 3814 assert(udf_node->efe); 3815 uid = (uid_t)udf_rw32(efe->uid); 3816 gid = (gid_t)udf_rw32(efe->gid); 3817 } 3818 3819 /* do the uid/gid translation game */ 3820 if ((uid == (uid_t) -1) && (gid == (gid_t) -1)) { 3821 uid = ump->mount_args.anon_uid; 3822 gid = ump->mount_args.anon_gid; 3823 } 3824 *uidp = uid; 3825 *gidp = gid; 3826 3827 UDF_UNLOCK_NODE(udf_node, 0); 3828 } 3829 3830 3831 void 3832 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 3833 { 3834 struct udf_mount *ump = udf_node->ump; 3835 struct file_entry *fe = udf_node->fe; 3836 struct extfile_entry *efe = udf_node->efe; 3837 uid_t nobody_uid; 3838 gid_t nobody_gid; 3839 3840 UDF_LOCK_NODE(udf_node, 0); 3841 3842 /* do the uid/gid translation game */ 3843 nobody_uid = ump->mount_args.nobody_uid; 3844 nobody_gid = ump->mount_args.nobody_gid; 3845 if ((uid == nobody_uid) && (gid == nobody_gid)) { 3846 uid = (uid_t) -1; 3847 gid = (gid_t) -1; 3848 } 3849 3850 if (fe) { 3851 fe->uid = udf_rw32((uint32_t) uid); 3852 fe->gid = udf_rw32((uint32_t) gid); 3853 } else { 3854 efe->uid = udf_rw32((uint32_t) uid); 3855 efe->gid = udf_rw32((uint32_t) gid); 3856 } 3857 3858 UDF_UNLOCK_NODE(udf_node, 0); 3859 } 3860 3861 3862 /* --------------------------------------------------------------------- */ 3863 3864 /* 3865 * UDF dirhash implementation 3866 */ 3867 3868 static uint32_t 3869 udf_dirhash_hash(const char *str, int namelen) 3870 { 3871 uint32_t hash = 5381; 3872 int i, c; 3873 3874 for (i = 0; i < namelen; i++) { 3875 c = *str++; 3876 hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ 3877 } 3878 return hash; 3879 } 3880 3881 3882 static void 3883 udf_dirhash_purge(struct udf_dirhash *dirh) 3884 { 3885 struct udf_dirhash_entry *dirh_e; 3886 uint32_t hashline; 3887 3888 if (dirh == NULL) 3889 return; 3890 3891 for (hashline = 0; hashline < UDF_DIRHASH_HASHSIZE; hashline++) { 3892 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 3893 while (dirh_e) { 3894 LIST_REMOVE(dirh_e, next); 3895 pool_put(&udf_dirhash_entry_pool, dirh_e); 3896 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 3897 } 3898 } 3899 dirh_e = LIST_FIRST(&dirh->free_entries); 3900 3901 while (dirh_e) { 3902 LIST_REMOVE(dirh_e, next); 3903 pool_put(&udf_dirhash_entry_pool, dirh_e); 3904 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 3905 } 3906 3907 dirh->flags &= ~UDF_DIRH_COMPLETE; 3908 dirh->flags |= UDF_DIRH_PURGED; 3909 3910 udf_dirhashsize -= dirh->size; 3911 dirh->size = 0; 3912 } 3913 3914 3915 static void 3916 udf_dirhash_destroy(struct udf_dirhash **dirhp) 3917 { 3918 struct udf_dirhash *dirh = *dirhp; 3919 3920 if (dirh == NULL) 3921 return; 3922 3923 mutex_enter(&udf_dirhashmutex); 3924 3925 udf_dirhash_purge(dirh); 3926 TAILQ_REMOVE(&udf_dirhash_queue, dirh, next); 3927 pool_put(&udf_dirhash_pool, dirh); 3928 3929 *dirhp = NULL; 3930 3931 mutex_exit(&udf_dirhashmutex); 3932 } 3933 3934 3935 static void 3936 udf_dirhash_get(struct udf_dirhash **dirhp) 3937 { 3938 struct udf_dirhash *dirh; 3939 uint32_t hashline; 3940 3941 mutex_enter(&udf_dirhashmutex); 3942 3943 dirh = *dirhp; 3944 if (*dirhp == NULL) { 3945 dirh = pool_get(&udf_dirhash_pool, PR_WAITOK); 3946 *dirhp = dirh; 3947 memset(dirh, 0, sizeof(struct udf_dirhash)); 3948 for (hashline = 0; hashline < UDF_DIRHASH_HASHSIZE; hashline++) 3949 LIST_INIT(&dirh->entries[hashline]); 3950 dirh->size = 0; 3951 dirh->refcnt = 0; 3952 dirh->flags = 0; 3953 } else { 3954 TAILQ_REMOVE(&udf_dirhash_queue, dirh, next); 3955 } 3956 3957 dirh->refcnt++; 3958 TAILQ_INSERT_HEAD(&udf_dirhash_queue, dirh, next); 3959 3960 mutex_exit(&udf_dirhashmutex); 3961 } 3962 3963 3964 static void 3965 udf_dirhash_put(struct udf_dirhash *dirh) 3966 { 3967 mutex_enter(&udf_dirhashmutex); 3968 dirh->refcnt--; 3969 mutex_exit(&udf_dirhashmutex); 3970 } 3971 3972 3973 static void 3974 udf_dirhash_enter(struct udf_node *dir_node, struct fileid_desc *fid, 3975 struct dirent *dirent, uint64_t offset, uint32_t fid_size, int new) 3976 { 3977 struct udf_dirhash *dirh, *del_dirh, *prev_dirh; 3978 struct udf_dirhash_entry *dirh_e; 3979 uint32_t hashvalue, hashline; 3980 int entrysize; 3981 3982 /* make sure we have a dirhash to work on */ 3983 dirh = dir_node->dir_hash; 3984 KASSERT(dirh); 3985 KASSERT(dirh->refcnt > 0); 3986 3987 /* are we trying to re-enter an entry? */ 3988 if (!new && (dirh->flags & UDF_DIRH_COMPLETE)) 3989 return; 3990 3991 /* calculate our hash */ 3992 hashvalue = udf_dirhash_hash(dirent->d_name, dirent->d_namlen); 3993 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 3994 3995 /* lookup and insert entry if not there yet */ 3996 LIST_FOREACH(dirh_e, &dirh->entries[hashline], next) { 3997 /* check for hash collision */ 3998 if (dirh_e->hashvalue != hashvalue) 3999 continue; 4000 if (dirh_e->offset != offset) 4001 continue; 4002 /* got it already */ 4003 KASSERT(dirh_e->d_namlen == dirent->d_namlen); 4004 KASSERT(dirh_e->fid_size == fid_size); 4005 return; 4006 } 4007 4008 DPRINTF(DIRHASH, ("dirhash enter %"PRIu64", %d, %d for `%*.*s`\n", 4009 offset, fid_size, dirent->d_namlen, 4010 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4011 4012 /* check if entry is in free space list */ 4013 LIST_FOREACH(dirh_e, &dirh->free_entries, next) { 4014 if (dirh_e->offset == offset) { 4015 DPRINTF(DIRHASH, ("\tremoving free entry\n")); 4016 LIST_REMOVE(dirh_e, next); 4017 break; 4018 } 4019 } 4020 4021 /* ensure we are not passing the dirhash limit */ 4022 entrysize = sizeof(struct udf_dirhash_entry); 4023 if (udf_dirhashsize + entrysize > udf_maxdirhashsize) { 4024 del_dirh = TAILQ_LAST(&udf_dirhash_queue, _udf_dirhash); 4025 KASSERT(del_dirh); 4026 while (udf_dirhashsize + entrysize > udf_maxdirhashsize) { 4027 /* no use trying to delete myself */ 4028 if (del_dirh == dirh) 4029 break; 4030 prev_dirh = TAILQ_PREV(del_dirh, _udf_dirhash, next); 4031 if (del_dirh->refcnt == 0) 4032 udf_dirhash_purge(del_dirh); 4033 del_dirh = prev_dirh; 4034 } 4035 } 4036 4037 /* add to the hashline */ 4038 dirh_e = pool_get(&udf_dirhash_entry_pool, PR_WAITOK); 4039 memset(dirh_e, 0, sizeof(struct udf_dirhash_entry)); 4040 4041 dirh_e->hashvalue = hashvalue; 4042 dirh_e->offset = offset; 4043 dirh_e->d_namlen = dirent->d_namlen; 4044 dirh_e->fid_size = fid_size; 4045 4046 dirh->size += sizeof(struct udf_dirhash_entry); 4047 udf_dirhashsize += sizeof(struct udf_dirhash_entry); 4048 LIST_INSERT_HEAD(&dirh->entries[hashline], dirh_e, next); 4049 } 4050 4051 4052 static void 4053 udf_dirhash_enter_freed(struct udf_node *dir_node, uint64_t offset, 4054 uint32_t fid_size) 4055 { 4056 struct udf_dirhash *dirh; 4057 struct udf_dirhash_entry *dirh_e; 4058 4059 /* make sure we have a dirhash to work on */ 4060 dirh = dir_node->dir_hash; 4061 KASSERT(dirh); 4062 KASSERT(dirh->refcnt > 0); 4063 4064 #ifdef DEBUG 4065 /* check for double entry of free space */ 4066 LIST_FOREACH(dirh_e, &dirh->free_entries, next) 4067 KASSERT(dirh_e->offset != offset); 4068 #endif 4069 4070 DPRINTF(DIRHASH, ("dirhash enter FREED %"PRIu64", %d\n", 4071 offset, fid_size)); 4072 dirh_e = pool_get(&udf_dirhash_entry_pool, PR_WAITOK); 4073 memset(dirh_e, 0, sizeof(struct udf_dirhash_entry)); 4074 4075 dirh_e->hashvalue = 0; /* not relevant */ 4076 dirh_e->offset = offset; 4077 dirh_e->d_namlen = 0; /* not relevant */ 4078 dirh_e->fid_size = fid_size; 4079 4080 /* XXX it might be preferable to append them at the tail */ 4081 LIST_INSERT_HEAD(&dirh->free_entries, dirh_e, next); 4082 dirh->size += sizeof(struct udf_dirhash_entry); 4083 udf_dirhashsize += sizeof(struct udf_dirhash_entry); 4084 } 4085 4086 4087 static void 4088 udf_dirhash_remove(struct udf_node *dir_node, struct dirent *dirent, 4089 uint64_t offset, uint32_t fid_size) 4090 { 4091 struct udf_dirhash *dirh; 4092 struct udf_dirhash_entry *dirh_e; 4093 uint32_t hashvalue, hashline; 4094 4095 DPRINTF(DIRHASH, ("dirhash remove %"PRIu64", %d for `%*.*s`\n", 4096 offset, fid_size, 4097 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4098 4099 /* make sure we have a dirhash to work on */ 4100 dirh = dir_node->dir_hash; 4101 KASSERT(dirh); 4102 KASSERT(dirh->refcnt > 0); 4103 4104 /* calculate our hash */ 4105 hashvalue = udf_dirhash_hash(dirent->d_name, dirent->d_namlen); 4106 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 4107 4108 /* lookup entry */ 4109 LIST_FOREACH(dirh_e, &dirh->entries[hashline], next) { 4110 /* check for hash collision */ 4111 if (dirh_e->hashvalue != hashvalue) 4112 continue; 4113 if (dirh_e->offset != offset) 4114 continue; 4115 4116 /* got it! */ 4117 KASSERT(dirh_e->d_namlen == dirent->d_namlen); 4118 KASSERT(dirh_e->fid_size == fid_size); 4119 LIST_REMOVE(dirh_e, next); 4120 dirh->size -= sizeof(struct udf_dirhash_entry); 4121 udf_dirhashsize -= sizeof(struct udf_dirhash_entry); 4122 4123 udf_dirhash_enter_freed(dir_node, offset, fid_size); 4124 return; 4125 } 4126 4127 /* not found! */ 4128 panic("dirhash_remove couldn't find entry in hash table\n"); 4129 } 4130 4131 4132 /* BUGALERT: don't use result longer than needed, never past the node lock */ 4133 /* call with NULL *result initially and it will return nonzero if again */ 4134 static int 4135 udf_dirhash_lookup(struct udf_node *dir_node, const char *d_name, int d_namlen, 4136 struct udf_dirhash_entry **result) 4137 { 4138 struct udf_dirhash *dirh; 4139 struct udf_dirhash_entry *dirh_e; 4140 uint32_t hashvalue, hashline; 4141 4142 KASSERT(VOP_ISLOCKED(dir_node->vnode)); 4143 4144 /* make sure we have a dirhash to work on */ 4145 dirh = dir_node->dir_hash; 4146 KASSERT(dirh); 4147 KASSERT(dirh->refcnt > 0); 4148 4149 /* start where we were */ 4150 if (*result) { 4151 KASSERT(dir_node->dir_hash); 4152 dirh_e = *result; 4153 4154 /* retrieve information to avoid recalculation and advance */ 4155 hashvalue = dirh_e->hashvalue; 4156 dirh_e = LIST_NEXT(*result, next); 4157 } else { 4158 /* calculate our hash and lookup all entries in hashline */ 4159 hashvalue = udf_dirhash_hash(d_name, d_namlen); 4160 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 4161 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 4162 } 4163 4164 for (; dirh_e; dirh_e = LIST_NEXT(dirh_e, next)) { 4165 /* check for hash collision */ 4166 if (dirh_e->hashvalue != hashvalue) 4167 continue; 4168 if (dirh_e->d_namlen != d_namlen) 4169 continue; 4170 /* might have an entry in the cache */ 4171 *result = dirh_e; 4172 return 1; 4173 } 4174 4175 *result = NULL; 4176 return 0; 4177 } 4178 4179 4180 /* BUGALERT: don't use result longer than needed, never past the node lock */ 4181 /* call with NULL *result initially and it will return nonzero if again */ 4182 static int 4183 udf_dirhash_lookup_freed(struct udf_node *dir_node, uint32_t min_fidsize, 4184 struct udf_dirhash_entry **result) 4185 { 4186 struct udf_dirhash *dirh; 4187 struct udf_dirhash_entry *dirh_e; 4188 4189 KASSERT(VOP_ISLOCKED(dir_node->vnode)); 4190 4191 /* make sure we have a dirhash to work on */ 4192 dirh = dir_node->dir_hash; 4193 KASSERT(dirh); 4194 KASSERT(dirh->refcnt > 0); 4195 4196 /* start where we were */ 4197 if (*result) { 4198 KASSERT(dir_node->dir_hash); 4199 dirh_e = LIST_NEXT(*result, next); 4200 } else { 4201 /* lookup all entries that match */ 4202 dirh_e = LIST_FIRST(&dirh->free_entries); 4203 } 4204 4205 for (; dirh_e; dirh_e = LIST_NEXT(dirh_e, next)) { 4206 /* check for minimum size */ 4207 if (dirh_e->fid_size < min_fidsize) 4208 continue; 4209 /* might be a candidate */ 4210 *result = dirh_e; 4211 return 1; 4212 } 4213 4214 *result = NULL; 4215 return 0; 4216 } 4217 4218 4219 static int 4220 udf_dirhash_fill(struct udf_node *dir_node) 4221 { 4222 struct vnode *dvp = dir_node->vnode; 4223 struct udf_dirhash *dirh; 4224 struct file_entry *fe = dir_node->fe; 4225 struct extfile_entry *efe = dir_node->efe; 4226 struct fileid_desc *fid; 4227 struct dirent *dirent; 4228 uint64_t file_size, pre_diroffset, diroffset; 4229 uint32_t lb_size; 4230 int error; 4231 4232 /* make sure we have a dirhash to work on */ 4233 dirh = dir_node->dir_hash; 4234 KASSERT(dirh); 4235 KASSERT(dirh->refcnt > 0); 4236 4237 if (dirh->flags & UDF_DIRH_BROKEN) 4238 return EIO; 4239 if (dirh->flags & UDF_DIRH_COMPLETE) 4240 return 0; 4241 4242 /* make sure we have a clean dirhash to add to */ 4243 udf_dirhash_purge(dirh); 4244 4245 /* get directory filesize */ 4246 if (fe) { 4247 file_size = udf_rw64(fe->inf_len); 4248 } else { 4249 assert(efe); 4250 file_size = udf_rw64(efe->inf_len); 4251 } 4252 4253 /* allocate temporary space for fid */ 4254 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4255 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4256 4257 /* allocate temporary space for dirent */ 4258 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4259 4260 error = 0; 4261 diroffset = 0; 4262 while (diroffset < file_size) { 4263 /* transfer a new fid/dirent */ 4264 pre_diroffset = diroffset; 4265 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4266 if (error) { 4267 /* TODO what to do? continue but not add? */ 4268 dirh->flags |= UDF_DIRH_BROKEN; 4269 udf_dirhash_purge(dirh); 4270 break; 4271 } 4272 4273 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4274 /* register deleted extent for reuse */ 4275 udf_dirhash_enter_freed(dir_node, pre_diroffset, 4276 udf_fidsize(fid)); 4277 } else { 4278 /* append to the dirhash */ 4279 udf_dirhash_enter(dir_node, fid, dirent, pre_diroffset, 4280 udf_fidsize(fid), 0); 4281 } 4282 } 4283 dirh->flags |= UDF_DIRH_COMPLETE; 4284 4285 free(fid, M_UDFTEMP); 4286 free(dirent, M_UDFTEMP); 4287 4288 return error; 4289 } 4290 4291 4292 /* --------------------------------------------------------------------- */ 4293 4294 /* 4295 * Directory read and manipulation functions. 4296 * 4297 * Note that if the file is found, the cached diroffset position *before* the 4298 * advance is remembered. Thus if the same filename is lookup again just after 4299 * this lookup its immediately found. 4300 */ 4301 4302 int 4303 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4304 struct long_ad *icb_loc, int *found) 4305 { 4306 struct udf_node *dir_node = VTOI(vp); 4307 struct udf_dirhash_entry *dirh_ep; 4308 struct fileid_desc *fid; 4309 struct dirent *dirent; 4310 uint64_t diroffset; 4311 uint32_t lb_size; 4312 int hit, error; 4313 4314 /* set default return */ 4315 *found = 0; 4316 4317 /* get our dirhash and make sure its read in */ 4318 udf_dirhash_get(&dir_node->dir_hash); 4319 error = udf_dirhash_fill(dir_node); 4320 if (error) { 4321 udf_dirhash_put(dir_node->dir_hash); 4322 return error; 4323 } 4324 4325 /* allocate temporary space for fid */ 4326 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4327 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4328 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4329 4330 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4331 namelen, namelen, name)); 4332 4333 /* search our dirhash hits */ 4334 memset(icb_loc, 0, sizeof(*icb_loc)); 4335 dirh_ep = NULL; 4336 for (;;) { 4337 hit = udf_dirhash_lookup(dir_node, name, namelen, &dirh_ep); 4338 /* if no hit, abort the search */ 4339 if (!hit) 4340 break; 4341 4342 /* check this hit */ 4343 diroffset = dirh_ep->offset; 4344 4345 /* transfer a new fid/dirent */ 4346 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4347 if (error) 4348 break; 4349 4350 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4351 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4352 4353 /* see if its our entry */ 4354 KASSERT(dirent->d_namlen == namelen); 4355 if (strncmp(dirent->d_name, name, namelen) == 0) { 4356 *found = 1; 4357 *icb_loc = fid->icb; 4358 break; 4359 } 4360 } 4361 free(fid, M_UDFTEMP); 4362 free(dirent, M_UDFTEMP); 4363 4364 udf_dirhash_put(dir_node->dir_hash); 4365 4366 return error; 4367 } 4368 4369 /* --------------------------------------------------------------------- */ 4370 4371 static int 4372 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4373 struct long_ad *node_icb, struct long_ad *parent_icb, 4374 uint64_t parent_unique_id) 4375 { 4376 struct timespec now; 4377 struct icb_tag *icb; 4378 struct filetimes_extattr_entry *ft_extattr; 4379 uint64_t unique_id; 4380 uint32_t fidsize, lb_num; 4381 uint8_t *bpos; 4382 int crclen, attrlen; 4383 4384 lb_num = udf_rw32(node_icb->loc.lb_num); 4385 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4386 icb = &fe->icbtag; 4387 4388 /* 4389 * Always use strategy type 4 unless on WORM wich we don't support 4390 * (yet). Fill in defaults and set for internal allocation of data. 4391 */ 4392 icb->strat_type = udf_rw16(4); 4393 icb->max_num_entries = udf_rw16(1); 4394 icb->file_type = file_type; /* 8 bit */ 4395 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4396 4397 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4398 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4399 4400 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4401 4402 vfs_timestamp(&now); 4403 udf_timespec_to_timestamp(&now, &fe->atime); 4404 udf_timespec_to_timestamp(&now, &fe->attrtime); 4405 udf_timespec_to_timestamp(&now, &fe->mtime); 4406 4407 udf_set_regid(&fe->imp_id, IMPL_NAME); 4408 udf_add_impl_regid(ump, &fe->imp_id); 4409 4410 unique_id = udf_advance_uniqueid(ump); 4411 fe->unique_id = udf_rw64(unique_id); 4412 fe->l_ea = udf_rw32(0); 4413 4414 /* create extended attribute to record our creation time */ 4415 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4416 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4417 memset(ft_extattr, 0, attrlen); 4418 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4419 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4420 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4421 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4422 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4423 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4424 4425 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4426 (struct extattr_entry *) ft_extattr); 4427 free(ft_extattr, M_UDFTEMP); 4428 4429 /* if its a directory, create '..' */ 4430 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4431 fidsize = 0; 4432 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4433 fidsize = udf_create_parentfid(ump, 4434 (struct fileid_desc *) bpos, parent_icb, 4435 parent_unique_id); 4436 } 4437 4438 /* record fidlength information */ 4439 fe->inf_len = udf_rw64(fidsize); 4440 fe->l_ad = udf_rw32(fidsize); 4441 fe->logblks_rec = udf_rw64(0); /* intern */ 4442 4443 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4444 crclen += udf_rw32(fe->l_ea) + fidsize; 4445 fe->tag.desc_crc_len = udf_rw16(crclen); 4446 4447 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4448 4449 return fidsize; 4450 } 4451 4452 /* --------------------------------------------------------------------- */ 4453 4454 static int 4455 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4456 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4457 uint64_t parent_unique_id) 4458 { 4459 struct timespec now; 4460 struct icb_tag *icb; 4461 uint64_t unique_id; 4462 uint32_t fidsize, lb_num; 4463 uint8_t *bpos; 4464 int crclen; 4465 4466 lb_num = udf_rw32(node_icb->loc.lb_num); 4467 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4468 icb = &efe->icbtag; 4469 4470 /* 4471 * Always use strategy type 4 unless on WORM wich we don't support 4472 * (yet). Fill in defaults and set for internal allocation of data. 4473 */ 4474 icb->strat_type = udf_rw16(4); 4475 icb->max_num_entries = udf_rw16(1); 4476 icb->file_type = file_type; /* 8 bit */ 4477 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4478 4479 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4480 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4481 4482 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4483 4484 vfs_timestamp(&now); 4485 udf_timespec_to_timestamp(&now, &efe->ctime); 4486 udf_timespec_to_timestamp(&now, &efe->atime); 4487 udf_timespec_to_timestamp(&now, &efe->attrtime); 4488 udf_timespec_to_timestamp(&now, &efe->mtime); 4489 4490 udf_set_regid(&efe->imp_id, IMPL_NAME); 4491 udf_add_impl_regid(ump, &efe->imp_id); 4492 4493 unique_id = udf_advance_uniqueid(ump); 4494 efe->unique_id = udf_rw64(unique_id); 4495 efe->l_ea = udf_rw32(0); 4496 4497 /* if its a directory, create '..' */ 4498 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4499 fidsize = 0; 4500 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4501 fidsize = udf_create_parentfid(ump, 4502 (struct fileid_desc *) bpos, parent_icb, 4503 parent_unique_id); 4504 } 4505 4506 /* record fidlength information */ 4507 efe->obj_size = udf_rw64(fidsize); 4508 efe->inf_len = udf_rw64(fidsize); 4509 efe->l_ad = udf_rw32(fidsize); 4510 efe->logblks_rec = udf_rw64(0); /* intern */ 4511 4512 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4513 crclen += udf_rw32(efe->l_ea) + fidsize; 4514 efe->tag.desc_crc_len = udf_rw16(crclen); 4515 4516 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4517 4518 return fidsize; 4519 } 4520 4521 /* --------------------------------------------------------------------- */ 4522 4523 int 4524 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4525 struct udf_node *udf_node, struct componentname *cnp) 4526 { 4527 struct vnode *dvp = dir_node->vnode; 4528 struct udf_dirhash_entry *dirh_ep; 4529 struct file_entry *fe = dir_node->fe; 4530 struct extfile_entry *efe = dir_node->efe; 4531 struct fileid_desc *fid; 4532 struct dirent *dirent; 4533 uint64_t file_size, diroffset; 4534 uint32_t lb_size, fidsize; 4535 int found, error; 4536 char const *name = cnp->cn_nameptr; 4537 int namelen = cnp->cn_namelen; 4538 int hit, refcnt; 4539 4540 /* get our dirhash and make sure its read in */ 4541 udf_dirhash_get(&dir_node->dir_hash); 4542 error = udf_dirhash_fill(dir_node); 4543 if (error) { 4544 udf_dirhash_put(dir_node->dir_hash); 4545 return error; 4546 } 4547 4548 /* get directory filesize */ 4549 if (fe) { 4550 file_size = udf_rw64(fe->inf_len); 4551 } else { 4552 assert(efe); 4553 file_size = udf_rw64(efe->inf_len); 4554 } 4555 4556 /* allocate temporary space for fid */ 4557 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4558 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4559 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4560 4561 /* search our dirhash hits */ 4562 found = 0; 4563 dirh_ep = NULL; 4564 for (;;) { 4565 hit = udf_dirhash_lookup(dir_node, name, namelen, &dirh_ep); 4566 /* if no hit, abort the search */ 4567 if (!hit) 4568 break; 4569 4570 /* check this hit */ 4571 diroffset = dirh_ep->offset; 4572 4573 /* transfer a new fid/dirent */ 4574 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4575 if (error) 4576 break; 4577 4578 /* see if its our entry */ 4579 KASSERT(dirent->d_namlen == namelen); 4580 if (strncmp(dirent->d_name, name, namelen) == 0) { 4581 found = 1; 4582 break; 4583 } 4584 } 4585 4586 if (!found) 4587 error = ENOENT; 4588 if (error) 4589 goto error_out; 4590 4591 /* mark deleted */ 4592 fid->file_char |= UDF_FILE_CHAR_DEL; 4593 #ifdef UDF_COMPLETE_DELETE 4594 memset(&fid->icb, 0, sizeof(fid->icb)); 4595 #endif 4596 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4597 4598 /* get size of fid and compensate for the read_fid_stream advance */ 4599 fidsize = udf_fidsize(fid); 4600 diroffset -= fidsize; 4601 4602 /* write out */ 4603 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4604 fid, fidsize, diroffset, 4605 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4606 FSCRED, NULL, NULL); 4607 if (error) 4608 goto error_out; 4609 4610 /* get reference count of attached node */ 4611 if (udf_node->fe) { 4612 refcnt = udf_rw16(udf_node->fe->link_cnt); 4613 } else { 4614 KASSERT(udf_node->efe); 4615 refcnt = udf_rw16(udf_node->efe->link_cnt); 4616 } 4617 #ifdef UDF_COMPLETE_DELETE 4618 /* substract reference counter in attached node */ 4619 refcnt -= 1; 4620 if (udf_node->fe) { 4621 udf_node->fe->link_cnt = udf_rw16(refcnt); 4622 } else { 4623 udf_node->efe->link_cnt = udf_rw16(refcnt); 4624 } 4625 4626 /* prevent writeout when refcnt == 0 */ 4627 if (refcnt == 0) 4628 udf_node->i_flags |= IN_DELETED; 4629 4630 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4631 int drefcnt; 4632 4633 /* substract reference counter in directory node */ 4634 /* note subtract 2 (?) for its was also backreferenced */ 4635 if (dir_node->fe) { 4636 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4637 drefcnt -= 1; 4638 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4639 } else { 4640 KASSERT(dir_node->efe); 4641 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4642 drefcnt -= 1; 4643 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4644 } 4645 } 4646 4647 udf_node->i_flags |= IN_MODIFIED; 4648 dir_node->i_flags |= IN_MODIFIED; 4649 #endif 4650 /* if it is/was a hardlink adjust the file count */ 4651 if (refcnt > 0) 4652 udf_adjust_filecount(udf_node, -1); 4653 4654 /* remove from the dirhash */ 4655 udf_dirhash_remove(dir_node, dirent, diroffset, 4656 udf_fidsize(fid)); 4657 4658 error_out: 4659 free(fid, M_UDFTEMP); 4660 free(dirent, M_UDFTEMP); 4661 4662 udf_dirhash_put(dir_node->dir_hash); 4663 4664 return error; 4665 } 4666 4667 /* --------------------------------------------------------------------- */ 4668 4669 /* 4670 * We are not allowed to split the fid tag itself over an logical block so 4671 * check the space remaining in the logical block. 4672 * 4673 * We try to select the smallest candidate for recycling or when none is 4674 * found, append a new one at the end of the directory. 4675 */ 4676 4677 int 4678 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4679 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4680 { 4681 struct vnode *dvp = dir_node->vnode; 4682 struct udf_dirhash_entry *dirh_ep; 4683 struct fileid_desc *fid; 4684 struct icb_tag *icbtag; 4685 struct charspec osta_charspec; 4686 struct dirent dirent; 4687 uint64_t unique_id, dir_size, diroffset; 4688 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4689 uint32_t chosen_size, chosen_size_diff; 4690 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4691 int file_char, refcnt, icbflags, addr_type, hit, error; 4692 4693 /* get our dirhash and make sure its read in */ 4694 udf_dirhash_get(&dir_node->dir_hash); 4695 error = udf_dirhash_fill(dir_node); 4696 if (error) { 4697 udf_dirhash_put(dir_node->dir_hash); 4698 return error; 4699 } 4700 4701 /* get info */ 4702 lb_size = udf_rw32(ump->logical_vol->lb_size); 4703 udf_osta_charset(&osta_charspec); 4704 4705 if (dir_node->fe) { 4706 dir_size = udf_rw64(dir_node->fe->inf_len); 4707 icbtag = &dir_node->fe->icbtag; 4708 } else { 4709 dir_size = udf_rw64(dir_node->efe->inf_len); 4710 icbtag = &dir_node->efe->icbtag; 4711 } 4712 4713 icbflags = udf_rw16(icbtag->flags); 4714 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4715 4716 if (udf_node->fe) { 4717 unique_id = udf_rw64(udf_node->fe->unique_id); 4718 refcnt = udf_rw16(udf_node->fe->link_cnt); 4719 } else { 4720 unique_id = udf_rw64(udf_node->efe->unique_id); 4721 refcnt = udf_rw16(udf_node->efe->link_cnt); 4722 } 4723 4724 if (refcnt > 0) { 4725 unique_id = udf_advance_uniqueid(ump); 4726 udf_adjust_filecount(udf_node, 1); 4727 } 4728 4729 /* determine file characteristics */ 4730 file_char = 0; /* visible non deleted file and not stream metadata */ 4731 if (vap->va_type == VDIR) 4732 file_char = UDF_FILE_CHAR_DIR; 4733 4734 /* malloc scrap buffer */ 4735 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4736 bzero(fid, lb_size); 4737 4738 /* calculate _minimum_ fid size */ 4739 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4740 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4741 fidsize = UDF_FID_SIZE + fid->l_fi; 4742 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4743 4744 /* find position that will fit the FID */ 4745 chosen_fid_pos = dir_size; 4746 chosen_size = 0; 4747 chosen_size_diff = UINT_MAX; 4748 4749 /* shut up gcc */ 4750 dirent.d_namlen = 0; 4751 4752 /* search our dirhash hits */ 4753 error = 0; 4754 dirh_ep = NULL; 4755 for (;;) { 4756 hit = udf_dirhash_lookup_freed(dir_node, fidsize, &dirh_ep); 4757 /* if no hit, abort the search */ 4758 if (!hit) 4759 break; 4760 4761 /* check this hit for size */ 4762 this_fidsize = dirh_ep->fid_size; 4763 4764 /* check this hit */ 4765 fid_pos = dirh_ep->offset; 4766 end_fid_pos = fid_pos + this_fidsize; 4767 size_diff = this_fidsize - fidsize; 4768 lb_rest = lb_size - (end_fid_pos % lb_size); 4769 4770 #ifndef UDF_COMPLETE_DELETE 4771 /* transfer a new fid/dirent */ 4772 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4773 if (error) 4774 goto error_out; 4775 4776 /* only reuse entries that are wiped */ 4777 /* check if the len + loc are marked zero */ 4778 if (udf_rw32(fid->icb.len != 0)) 4779 continue; 4780 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4781 continue; 4782 if (udf_rw16(fid->icb.loc.part_num != 0)) 4783 continue; 4784 #endif /* UDF_COMPLETE_DELETE */ 4785 4786 /* select if not splitting the tag and its smaller */ 4787 if ((size_diff >= 0) && 4788 (size_diff < chosen_size_diff) && 4789 (lb_rest >= sizeof(struct desc_tag))) 4790 { 4791 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4792 if ((size_diff == 0) || (size_diff >= 32)) { 4793 chosen_fid_pos = fid_pos; 4794 chosen_size = this_fidsize; 4795 chosen_size_diff = size_diff; 4796 } 4797 } 4798 } 4799 4800 4801 /* extend directory if no other candidate found */ 4802 if (chosen_size == 0) { 4803 chosen_fid_pos = dir_size; 4804 chosen_size = fidsize; 4805 chosen_size_diff = 0; 4806 4807 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4808 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4809 /* pre-grow directory to see if we're to switch */ 4810 udf_grow_node(dir_node, dir_size + chosen_size); 4811 4812 icbflags = udf_rw16(icbtag->flags); 4813 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4814 } 4815 4816 /* make sure the next fid desc_tag won't be splitted */ 4817 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4818 end_fid_pos = chosen_fid_pos + chosen_size; 4819 lb_rest = lb_size - (end_fid_pos % lb_size); 4820 4821 /* pad with implementation use regid if needed */ 4822 if (lb_rest < sizeof(struct desc_tag)) 4823 chosen_size += 32; 4824 } 4825 } 4826 chosen_size_diff = chosen_size - fidsize; 4827 diroffset = chosen_fid_pos + chosen_size; 4828 4829 /* populate the FID */ 4830 memset(fid, 0, lb_size); 4831 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4832 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4833 fid->file_char = file_char; 4834 fid->icb = udf_node->loc; 4835 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4836 fid->l_iu = udf_rw16(0); 4837 4838 if (chosen_size > fidsize) { 4839 /* insert implementation-use regid to space it correctly */ 4840 fid->l_iu = udf_rw16(chosen_size_diff); 4841 4842 /* set implementation use */ 4843 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4844 udf_add_impl_regid(ump, (struct regid *) fid->data); 4845 } 4846 4847 /* fill in name */ 4848 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4849 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4850 4851 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4852 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4853 4854 /* writeout FID/update parent directory */ 4855 error = vn_rdwr(UIO_WRITE, dvp, 4856 fid, chosen_size, chosen_fid_pos, 4857 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4858 FSCRED, NULL, NULL); 4859 4860 if (error) 4861 goto error_out; 4862 4863 /* add reference counter in attached node */ 4864 if (udf_node->fe) { 4865 refcnt = udf_rw16(udf_node->fe->link_cnt); 4866 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 4867 } else { 4868 KASSERT(udf_node->efe); 4869 refcnt = udf_rw16(udf_node->efe->link_cnt); 4870 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 4871 } 4872 4873 /* mark not deleted if it was... just in case, but do warn */ 4874 if (udf_node->i_flags & IN_DELETED) { 4875 printf("udf: warning, marking a file undeleted\n"); 4876 udf_node->i_flags &= ~IN_DELETED; 4877 } 4878 4879 if (file_char & UDF_FILE_CHAR_DIR) { 4880 /* add reference counter in directory node for '..' */ 4881 if (dir_node->fe) { 4882 refcnt = udf_rw16(dir_node->fe->link_cnt); 4883 refcnt++; 4884 dir_node->fe->link_cnt = udf_rw16(refcnt); 4885 } else { 4886 KASSERT(dir_node->efe); 4887 refcnt = udf_rw16(dir_node->efe->link_cnt); 4888 refcnt++; 4889 dir_node->efe->link_cnt = udf_rw16(refcnt); 4890 } 4891 } 4892 4893 /* append to the dirhash */ 4894 dirent.d_namlen = cnp->cn_namelen; 4895 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 4896 udf_dirhash_enter(dir_node, fid, &dirent, chosen_fid_pos, 4897 udf_fidsize(fid), 1); 4898 4899 /* note updates */ 4900 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 4901 /* VN_KNOTE(udf_node, ...) */ 4902 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 4903 4904 error_out: 4905 free(fid, M_TEMP); 4906 4907 udf_dirhash_put(dir_node->dir_hash); 4908 4909 return error; 4910 } 4911 4912 /* --------------------------------------------------------------------- */ 4913 4914 /* 4915 * Each node can have an attached streamdir node though not recursively. These 4916 * are otherwise known as named substreams/named extended attributes that have 4917 * no size limitations. 4918 * 4919 * `Normal' extended attributes are indicated with a number and are recorded 4920 * in either the fe/efe descriptor itself for small descriptors or recorded in 4921 * the attached extended attribute file. Since these spaces can get 4922 * fragmented, care ought to be taken. 4923 * 4924 * Since the size of the space reserved for allocation descriptors is limited, 4925 * there is a mechanim provided for extending this space; this is done by a 4926 * special extent to allow schrinking of the allocations without breaking the 4927 * linkage to the allocation extent descriptor. 4928 */ 4929 4930 int 4931 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 4932 struct udf_node **udf_noderes) 4933 { 4934 union dscrptr *dscr; 4935 struct udf_node *udf_node; 4936 struct vnode *nvp; 4937 struct long_ad icb_loc, last_fe_icb_loc; 4938 uint64_t file_size; 4939 uint32_t lb_size, sector, dummy; 4940 uint8_t *file_data; 4941 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 4942 int slot, eof, error; 4943 4944 DPRINTF(NODE, ("udf_get_node called\n")); 4945 *udf_noderes = udf_node = NULL; 4946 4947 /* lock to disallow simultanious creation of same udf_node */ 4948 mutex_enter(&ump->get_node_lock); 4949 4950 DPRINTF(NODE, ("\tlookup in hash table\n")); 4951 /* lookup in hash table */ 4952 assert(ump); 4953 assert(node_icb_loc); 4954 udf_node = udf_hash_lookup(ump, node_icb_loc); 4955 if (udf_node) { 4956 DPRINTF(NODE, ("\tgot it from the hash!\n")); 4957 /* vnode is returned locked */ 4958 *udf_noderes = udf_node; 4959 mutex_exit(&ump->get_node_lock); 4960 return 0; 4961 } 4962 4963 /* garbage check: translate udf_node_icb_loc to sectornr */ 4964 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 4965 if (error) { 4966 /* no use, this will fail anyway */ 4967 mutex_exit(&ump->get_node_lock); 4968 return EINVAL; 4969 } 4970 4971 /* build udf_node (do initialise!) */ 4972 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4973 memset(udf_node, 0, sizeof(struct udf_node)); 4974 4975 DPRINTF(NODE, ("\tget new vnode\n")); 4976 /* give it a vnode */ 4977 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 4978 if (error) { 4979 pool_put(&udf_node_pool, udf_node); 4980 mutex_exit(&ump->get_node_lock); 4981 return error; 4982 } 4983 4984 /* always return locked vnode */ 4985 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 4986 /* recycle vnode and unlock; simultanious will fail too */ 4987 ungetnewvnode(nvp); 4988 mutex_exit(&ump->get_node_lock); 4989 return error; 4990 } 4991 4992 /* initialise crosslinks, note location of fe/efe for hashing */ 4993 udf_node->ump = ump; 4994 udf_node->vnode = nvp; 4995 nvp->v_data = udf_node; 4996 udf_node->loc = *node_icb_loc; 4997 udf_node->lockf = 0; 4998 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4999 cv_init(&udf_node->node_lock, "udf_nlk"); 5000 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 5001 udf_node->outstanding_bufs = 0; 5002 udf_node->outstanding_nodedscr = 0; 5003 5004 /* insert into the hash lookup */ 5005 udf_register_node(udf_node); 5006 5007 /* safe to unlock, the entry is in the hash table, vnode is locked */ 5008 mutex_exit(&ump->get_node_lock); 5009 5010 icb_loc = *node_icb_loc; 5011 needs_indirect = 0; 5012 strat4096 = 0; 5013 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 5014 file_size = 0; 5015 file_data = NULL; 5016 lb_size = udf_rw32(ump->logical_vol->lb_size); 5017 5018 DPRINTF(NODE, ("\tstart reading descriptors\n")); 5019 do { 5020 /* try to read in fe/efe */ 5021 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5022 5023 /* blank sector marks end of sequence, check this */ 5024 if ((dscr == NULL) && (!strat4096)) 5025 error = ENOENT; 5026 5027 /* break if read error or blank sector */ 5028 if (error || (dscr == NULL)) 5029 break; 5030 5031 /* process descriptor based on the descriptor type */ 5032 dscr_type = udf_rw16(dscr->tag.id); 5033 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 5034 5035 /* if dealing with an indirect entry, follow the link */ 5036 if (dscr_type == TAGID_INDIRECTENTRY) { 5037 needs_indirect = 0; 5038 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5039 icb_loc = dscr->inde.indirect_icb; 5040 continue; 5041 } 5042 5043 /* only file entries and extended file entries allowed here */ 5044 if ((dscr_type != TAGID_FENTRY) && 5045 (dscr_type != TAGID_EXTFENTRY)) { 5046 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5047 error = ENOENT; 5048 break; 5049 } 5050 5051 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 5052 5053 /* choose this one */ 5054 last_fe_icb_loc = icb_loc; 5055 5056 /* record and process/update (ext)fentry */ 5057 file_data = NULL; 5058 if (dscr_type == TAGID_FENTRY) { 5059 if (udf_node->fe) 5060 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5061 udf_node->fe); 5062 udf_node->fe = &dscr->fe; 5063 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 5064 udf_file_type = udf_node->fe->icbtag.file_type; 5065 file_size = udf_rw64(udf_node->fe->inf_len); 5066 file_data = udf_node->fe->data; 5067 } else { 5068 if (udf_node->efe) 5069 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5070 udf_node->efe); 5071 udf_node->efe = &dscr->efe; 5072 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 5073 udf_file_type = udf_node->efe->icbtag.file_type; 5074 file_size = udf_rw64(udf_node->efe->inf_len); 5075 file_data = udf_node->efe->data; 5076 } 5077 5078 /* check recording strategy (structure) */ 5079 5080 /* 5081 * Strategy 4096 is a daisy linked chain terminating with an 5082 * unrecorded sector or a TERM descriptor. The next 5083 * descriptor is to be found in the sector that follows the 5084 * current sector. 5085 */ 5086 if (strat == 4096) { 5087 strat4096 = 1; 5088 needs_indirect = 1; 5089 5090 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 5091 } 5092 5093 /* 5094 * Strategy 4 is the normal strategy and terminates, but if 5095 * we're in strategy 4096, we can't have strategy 4 mixed in 5096 */ 5097 5098 if (strat == 4) { 5099 if (strat4096) { 5100 error = EINVAL; 5101 break; 5102 } 5103 break; /* done */ 5104 } 5105 } while (!error); 5106 5107 /* first round of cleanup code */ 5108 if (error) { 5109 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 5110 /* recycle udf_node */ 5111 udf_dispose_node(udf_node); 5112 5113 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5114 nvp->v_data = NULL; 5115 ungetnewvnode(nvp); 5116 5117 return EINVAL; /* error code ok? */ 5118 } 5119 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 5120 5121 /* assert no references to dscr anymore beyong this point */ 5122 assert((udf_node->fe) || (udf_node->efe)); 5123 dscr = NULL; 5124 5125 /* 5126 * Remember where to record an updated version of the descriptor. If 5127 * there is a sequence of indirect entries, icb_loc will have been 5128 * updated. Its the write disipline to allocate new space and to make 5129 * sure the chain is maintained. 5130 * 5131 * `needs_indirect' flags if the next location is to be filled with 5132 * with an indirect entry. 5133 */ 5134 udf_node->write_loc = icb_loc; 5135 udf_node->needs_indirect = needs_indirect; 5136 5137 /* 5138 * Go trough all allocations extents of this descriptor and when 5139 * encountering a redirect read in the allocation extension. These are 5140 * daisy-chained. 5141 */ 5142 UDF_LOCK_NODE(udf_node, 0); 5143 udf_node->num_extensions = 0; 5144 5145 error = 0; 5146 slot = 0; 5147 for (;;) { 5148 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 5149 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 5150 "lb_num = %d, part = %d\n", slot, eof, 5151 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 5152 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 5153 udf_rw32(icb_loc.loc.lb_num), 5154 udf_rw16(icb_loc.loc.part_num))); 5155 if (eof) 5156 break; 5157 slot++; 5158 5159 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 5160 continue; 5161 5162 DPRINTF(NODE, ("\tgot redirect extent\n")); 5163 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 5164 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 5165 "too many allocation extensions on " 5166 "udf_node\n")); 5167 error = EINVAL; 5168 break; 5169 } 5170 5171 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 5172 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 5173 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 5174 "extension size in udf_node\n")); 5175 error = EINVAL; 5176 break; 5177 } 5178 5179 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 5180 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 5181 /* load in allocation extent */ 5182 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5183 if (error || (dscr == NULL)) 5184 break; 5185 5186 /* process read-in descriptor */ 5187 dscr_type = udf_rw16(dscr->tag.id); 5188 5189 if (dscr_type != TAGID_ALLOCEXTENT) { 5190 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5191 error = ENOENT; 5192 break; 5193 } 5194 5195 DPRINTF(NODE, ("\trecording redirect extent\n")); 5196 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5197 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5198 5199 udf_node->num_extensions++; 5200 5201 } /* while */ 5202 UDF_UNLOCK_NODE(udf_node, 0); 5203 5204 /* second round of cleanup code */ 5205 if (error) { 5206 /* recycle udf_node */ 5207 udf_dispose_node(udf_node); 5208 5209 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5210 nvp->v_data = NULL; 5211 ungetnewvnode(nvp); 5212 5213 return EINVAL; /* error code ok? */ 5214 } 5215 5216 DPRINTF(NODE, ("\tnode read in fine\n")); 5217 5218 /* 5219 * Translate UDF filetypes into vnode types. 5220 * 5221 * Systemfiles like the meta main and mirror files are not treated as 5222 * normal files, so we type them as having no type. UDF dictates that 5223 * they are not allowed to be visible. 5224 */ 5225 5226 switch (udf_file_type) { 5227 case UDF_ICB_FILETYPE_DIRECTORY : 5228 case UDF_ICB_FILETYPE_STREAMDIR : 5229 nvp->v_type = VDIR; 5230 break; 5231 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5232 nvp->v_type = VBLK; 5233 break; 5234 case UDF_ICB_FILETYPE_CHARDEVICE : 5235 nvp->v_type = VCHR; 5236 break; 5237 case UDF_ICB_FILETYPE_SOCKET : 5238 nvp->v_type = VSOCK; 5239 break; 5240 case UDF_ICB_FILETYPE_FIFO : 5241 nvp->v_type = VFIFO; 5242 break; 5243 case UDF_ICB_FILETYPE_SYMLINK : 5244 nvp->v_type = VLNK; 5245 break; 5246 case UDF_ICB_FILETYPE_VAT : 5247 case UDF_ICB_FILETYPE_META_MAIN : 5248 case UDF_ICB_FILETYPE_META_MIRROR : 5249 nvp->v_type = VNON; 5250 break; 5251 case UDF_ICB_FILETYPE_RANDOMACCESS : 5252 case UDF_ICB_FILETYPE_REALTIME : 5253 nvp->v_type = VREG; 5254 break; 5255 default: 5256 /* YIKES, something else */ 5257 nvp->v_type = VNON; 5258 } 5259 5260 /* TODO specfs, fifofs etc etc. vnops setting */ 5261 5262 /* don't forget to set vnode's v_size */ 5263 uvm_vnp_setsize(nvp, file_size); 5264 5265 /* TODO ext attr and streamdir udf_nodes */ 5266 5267 *udf_noderes = udf_node; 5268 5269 return 0; 5270 } 5271 5272 /* --------------------------------------------------------------------- */ 5273 5274 5275 int 5276 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5277 { 5278 union dscrptr *dscr; 5279 struct long_ad *loc; 5280 int extnr, flags, error; 5281 5282 DPRINTF(NODE, ("udf_writeout_node called\n")); 5283 5284 KASSERT(udf_node->outstanding_bufs == 0); 5285 KASSERT(udf_node->outstanding_nodedscr == 0); 5286 5287 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5288 5289 if (udf_node->i_flags & IN_DELETED) { 5290 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5291 return 0; 5292 } 5293 5294 /* lock node */ 5295 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5296 UDF_LOCK_NODE(udf_node, flags); 5297 5298 /* at least one descriptor writeout */ 5299 udf_node->outstanding_nodedscr = 1; 5300 5301 /* we're going to write out the descriptor so clear the flags */ 5302 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5303 5304 /* if we were rebuild, write out the allocation extents */ 5305 if (udf_node->i_flags & IN_NODE_REBUILD) { 5306 /* mark outstanding node dscriptors and issue them */ 5307 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5308 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5309 loc = &udf_node->ext_loc[extnr]; 5310 dscr = (union dscrptr *) udf_node->ext[extnr]; 5311 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5312 if (error) 5313 return error; 5314 } 5315 /* mark allocation extents written out */ 5316 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5317 } 5318 5319 if (udf_node->fe) { 5320 dscr = (union dscrptr *) udf_node->fe; 5321 } else { 5322 KASSERT(udf_node->efe); 5323 dscr = (union dscrptr *) udf_node->efe; 5324 } 5325 KASSERT(dscr); 5326 5327 loc = &udf_node->write_loc; 5328 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5329 return error; 5330 } 5331 5332 /* --------------------------------------------------------------------- */ 5333 5334 int 5335 udf_dispose_node(struct udf_node *udf_node) 5336 { 5337 struct vnode *vp; 5338 int extnr; 5339 5340 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5341 if (!udf_node) { 5342 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5343 return 0; 5344 } 5345 5346 vp = udf_node->vnode; 5347 #ifdef DIAGNOSTIC 5348 if (vp->v_numoutput) 5349 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5350 "v_numoutput = %d", udf_node, vp->v_numoutput); 5351 #endif 5352 5353 /* wait until out of sync (just in case we happen to stumble over one */ 5354 KASSERT(!mutex_owned(&mntvnode_lock)); 5355 mutex_enter(&mntvnode_lock); 5356 while (udf_node->i_flags & IN_SYNCED) { 5357 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5358 hz/16); 5359 } 5360 mutex_exit(&mntvnode_lock); 5361 5362 /* TODO extended attributes and streamdir */ 5363 5364 /* remove dirhash if present */ 5365 udf_dirhash_destroy(&udf_node->dir_hash); 5366 5367 /* remove from our hash lookup table */ 5368 udf_deregister_node(udf_node); 5369 5370 /* destroy our lock */ 5371 mutex_destroy(&udf_node->node_mutex); 5372 cv_destroy(&udf_node->node_lock); 5373 5374 /* dissociate our udf_node from the vnode */ 5375 genfs_node_destroy(udf_node->vnode); 5376 vp->v_data = NULL; 5377 5378 /* free associated memory and the node itself */ 5379 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5380 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5381 udf_node->ext[extnr]); 5382 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5383 } 5384 5385 if (udf_node->fe) 5386 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5387 udf_node->fe); 5388 if (udf_node->efe) 5389 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5390 udf_node->efe); 5391 5392 udf_node->fe = (void *) 0xdeadaaaa; 5393 udf_node->efe = (void *) 0xdeadbbbb; 5394 udf_node->ump = (void *) 0xdeadbeef; 5395 pool_put(&udf_node_pool, udf_node); 5396 5397 return 0; 5398 } 5399 5400 5401 5402 /* 5403 * create a new node using the specified vnodeops, vap and cnp but with the 5404 * udf_file_type. This allows special files to be created. Use with care. 5405 */ 5406 5407 static int 5408 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5409 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5410 { 5411 union dscrptr *dscr; 5412 struct udf_node *dir_node = VTOI(dvp);; 5413 struct udf_node *udf_node; 5414 struct udf_mount *ump = dir_node->ump; 5415 struct vnode *nvp; 5416 struct long_ad node_icb_loc; 5417 uint64_t parent_unique_id; 5418 uint64_t lmapping, pmapping; 5419 uint32_t lb_size, lb_num; 5420 uint16_t vpart_num; 5421 uid_t uid; 5422 gid_t gid, parent_gid; 5423 int fid_size, error; 5424 5425 lb_size = udf_rw32(ump->logical_vol->lb_size); 5426 *vpp = NULL; 5427 5428 /* allocate vnode */ 5429 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5430 if (error) 5431 return error; 5432 5433 /* lock node */ 5434 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5435 if (error) { 5436 nvp->v_data = NULL; 5437 ungetnewvnode(nvp); 5438 return error; 5439 } 5440 5441 /* get disc allocation for one logical block */ 5442 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5443 &vpart_num, &lmapping, &pmapping); 5444 lb_num = lmapping; 5445 if (error) { 5446 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5447 ungetnewvnode(nvp); 5448 return error; 5449 } 5450 5451 /* initialise pointer to location */ 5452 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5453 node_icb_loc.len = lb_size; 5454 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5455 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5456 5457 /* build udf_node (do initialise!) */ 5458 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5459 memset(udf_node, 0, sizeof(struct udf_node)); 5460 5461 /* initialise crosslinks, note location of fe/efe for hashing */ 5462 /* bugalert: synchronise with udf_get_node() */ 5463 udf_node->ump = ump; 5464 udf_node->vnode = nvp; 5465 nvp->v_data = udf_node; 5466 udf_node->loc = node_icb_loc; 5467 udf_node->write_loc = node_icb_loc; 5468 udf_node->lockf = 0; 5469 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5470 cv_init(&udf_node->node_lock, "udf_nlk"); 5471 udf_node->outstanding_bufs = 0; 5472 udf_node->outstanding_nodedscr = 0; 5473 5474 /* initialise genfs */ 5475 genfs_node_init(nvp, &udf_genfsops); 5476 5477 /* insert into the hash lookup */ 5478 udf_register_node(udf_node); 5479 5480 /* get parent's unique ID for refering '..' if its a directory */ 5481 if (dir_node->fe) { 5482 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5483 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5484 } else { 5485 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5486 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5487 } 5488 5489 /* get descriptor */ 5490 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5491 5492 /* choose a fe or an efe for it */ 5493 if (ump->logical_vol->tag.descriptor_ver == 2) { 5494 udf_node->fe = &dscr->fe; 5495 fid_size = udf_create_new_fe(ump, udf_node->fe, 5496 udf_file_type, &udf_node->loc, 5497 &dir_node->loc, parent_unique_id); 5498 /* TODO add extended attribute for creation time */ 5499 } else { 5500 udf_node->efe = &dscr->efe; 5501 fid_size = udf_create_new_efe(ump, udf_node->efe, 5502 udf_file_type, &udf_node->loc, 5503 &dir_node->loc, parent_unique_id); 5504 } 5505 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5506 5507 /* update vnode's size and type */ 5508 nvp->v_type = vap->va_type; 5509 uvm_vnp_setsize(nvp, fid_size); 5510 5511 /* set access mode */ 5512 udf_setaccessmode(udf_node, vap->va_mode); 5513 5514 /* set ownership */ 5515 uid = kauth_cred_geteuid(cnp->cn_cred); 5516 gid = parent_gid; 5517 udf_setownership(udf_node, uid, gid); 5518 5519 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5520 if (error) { 5521 /* free disc allocation for node */ 5522 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5523 5524 /* recycle udf_node */ 5525 udf_dispose_node(udf_node); 5526 vput(nvp); 5527 5528 *vpp = NULL; 5529 return error; 5530 } 5531 5532 /* adjust file count */ 5533 udf_adjust_filecount(udf_node, 1); 5534 5535 /* return result */ 5536 *vpp = nvp; 5537 5538 return 0; 5539 } 5540 5541 5542 int 5543 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5544 struct componentname *cnp) 5545 { 5546 int (**vnodeops)(void *); 5547 int udf_file_type; 5548 5549 DPRINTF(NODE, ("udf_create_node called\n")); 5550 5551 /* what type are we creating ? */ 5552 vnodeops = udf_vnodeop_p; 5553 /* start with a default */ 5554 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5555 5556 *vpp = NULL; 5557 5558 switch (vap->va_type) { 5559 case VREG : 5560 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5561 break; 5562 case VDIR : 5563 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5564 break; 5565 case VLNK : 5566 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5567 break; 5568 case VBLK : 5569 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5570 /* specfs */ 5571 return ENOTSUP; 5572 break; 5573 case VCHR : 5574 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5575 /* specfs */ 5576 return ENOTSUP; 5577 break; 5578 case VFIFO : 5579 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5580 /* specfs */ 5581 return ENOTSUP; 5582 break; 5583 case VSOCK : 5584 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5585 /* specfs */ 5586 return ENOTSUP; 5587 break; 5588 case VNON : 5589 case VBAD : 5590 default : 5591 /* nothing; can we even create these? */ 5592 return EINVAL; 5593 } 5594 5595 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5596 } 5597 5598 /* --------------------------------------------------------------------- */ 5599 5600 static void 5601 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5602 { 5603 struct udf_mount *ump = udf_node->ump; 5604 uint32_t lb_size, lb_num, len, num_lb; 5605 uint16_t vpart_num; 5606 5607 /* is there really one? */ 5608 if (mem == NULL) 5609 return; 5610 5611 /* got a descriptor here */ 5612 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5613 lb_num = udf_rw32(loc->loc.lb_num); 5614 vpart_num = udf_rw16(loc->loc.part_num); 5615 5616 lb_size = udf_rw32(ump->logical_vol->lb_size); 5617 num_lb = (len + lb_size -1) / lb_size; 5618 5619 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5620 } 5621 5622 void 5623 udf_delete_node(struct udf_node *udf_node) 5624 { 5625 void *dscr; 5626 struct udf_mount *ump; 5627 struct long_ad *loc; 5628 int extnr, lvint, dummy; 5629 5630 ump = udf_node->ump; 5631 5632 /* paranoia check on integrity; should be open!; we could panic */ 5633 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5634 if (lvint == UDF_INTEGRITY_CLOSED) 5635 printf("\tIntegrity was CLOSED!\n"); 5636 5637 /* whatever the node type, change its size to zero */ 5638 (void) udf_resize_node(udf_node, 0, &dummy); 5639 5640 /* force it to be `clean'; no use writing it out */ 5641 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5642 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5643 5644 /* adjust file count */ 5645 udf_adjust_filecount(udf_node, -1); 5646 5647 /* 5648 * Free its allocated descriptors; memory will be released when 5649 * vop_reclaim() is called. 5650 */ 5651 loc = &udf_node->loc; 5652 5653 dscr = udf_node->fe; 5654 udf_free_descriptor_space(udf_node, loc, dscr); 5655 dscr = udf_node->efe; 5656 udf_free_descriptor_space(udf_node, loc, dscr); 5657 5658 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5659 dscr = udf_node->ext[extnr]; 5660 loc = &udf_node->ext_loc[extnr]; 5661 udf_free_descriptor_space(udf_node, loc, dscr); 5662 } 5663 } 5664 5665 /* --------------------------------------------------------------------- */ 5666 5667 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5668 int 5669 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5670 { 5671 struct file_entry *fe = udf_node->fe; 5672 struct extfile_entry *efe = udf_node->efe; 5673 uint64_t file_size; 5674 int error; 5675 5676 if (fe) { 5677 file_size = udf_rw64(fe->inf_len); 5678 } else { 5679 assert(udf_node->efe); 5680 file_size = udf_rw64(efe->inf_len); 5681 } 5682 5683 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5684 file_size, new_size)); 5685 5686 /* if not changing, we're done */ 5687 if (file_size == new_size) 5688 return 0; 5689 5690 *extended = (new_size > file_size); 5691 if (*extended) { 5692 error = udf_grow_node(udf_node, new_size); 5693 } else { 5694 error = udf_shrink_node(udf_node, new_size); 5695 } 5696 5697 return error; 5698 } 5699 5700 5701 /* --------------------------------------------------------------------- */ 5702 5703 void 5704 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5705 struct timespec *mod, struct timespec *birth) 5706 { 5707 struct timespec now; 5708 struct file_entry *fe; 5709 struct extfile_entry *efe; 5710 struct filetimes_extattr_entry *ft_extattr; 5711 struct timestamp *atime, *mtime, *attrtime, *ctime; 5712 struct timestamp fe_ctime; 5713 struct timespec cur_birth; 5714 uint32_t offset, a_l; 5715 uint8_t *filedata; 5716 int error; 5717 5718 /* protect against rogue values */ 5719 if (!udf_node) 5720 return; 5721 5722 fe = udf_node->fe; 5723 efe = udf_node->efe; 5724 5725 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5726 return; 5727 5728 /* get descriptor information */ 5729 if (fe) { 5730 atime = &fe->atime; 5731 mtime = &fe->mtime; 5732 attrtime = &fe->attrtime; 5733 filedata = fe->data; 5734 5735 /* initial save dummy setting */ 5736 ctime = &fe_ctime; 5737 5738 /* check our extended attribute if present */ 5739 error = udf_extattr_search_intern(udf_node, 5740 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5741 if (!error) { 5742 ft_extattr = (struct filetimes_extattr_entry *) 5743 (filedata + offset); 5744 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5745 ctime = &ft_extattr->times[0]; 5746 } 5747 /* TODO create the extended attribute if not found ? */ 5748 } else { 5749 assert(udf_node->efe); 5750 atime = &efe->atime; 5751 mtime = &efe->mtime; 5752 attrtime = &efe->attrtime; 5753 ctime = &efe->ctime; 5754 } 5755 5756 vfs_timestamp(&now); 5757 5758 /* set access time */ 5759 if (udf_node->i_flags & IN_ACCESS) { 5760 if (acc == NULL) 5761 acc = &now; 5762 udf_timespec_to_timestamp(acc, atime); 5763 } 5764 5765 /* set modification time */ 5766 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5767 if (mod == NULL) 5768 mod = &now; 5769 udf_timespec_to_timestamp(mod, mtime); 5770 5771 /* ensure birthtime is older than set modification! */ 5772 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5773 if ((cur_birth.tv_sec > mod->tv_sec) || 5774 ((cur_birth.tv_sec == mod->tv_sec) && 5775 (cur_birth.tv_nsec > mod->tv_nsec))) { 5776 udf_timespec_to_timestamp(mod, ctime); 5777 } 5778 } 5779 5780 /* update birthtime if specified */ 5781 /* XXX we asume here that given birthtime is older than mod */ 5782 if (birth && (birth->tv_sec != VNOVAL)) { 5783 udf_timespec_to_timestamp(birth, ctime); 5784 } 5785 5786 /* set change time */ 5787 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5788 udf_timespec_to_timestamp(&now, attrtime); 5789 5790 /* notify updates to the node itself */ 5791 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5792 udf_node->i_flags |= IN_ACCESSED; 5793 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5794 udf_node->i_flags |= IN_MODIFIED; 5795 5796 /* clear modification flags */ 5797 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5798 } 5799 5800 /* --------------------------------------------------------------------- */ 5801 5802 int 5803 udf_update(struct vnode *vp, struct timespec *acc, 5804 struct timespec *mod, struct timespec *birth, int updflags) 5805 { 5806 struct udf_node *udf_node = VTOI(vp); 5807 struct udf_mount *ump = udf_node->ump; 5808 struct regid *impl_id; 5809 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5810 int waitfor, flags; 5811 5812 #ifdef DEBUG 5813 char bits[128]; 5814 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5815 updflags)); 5816 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5817 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5818 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5819 #endif 5820 5821 /* set our times */ 5822 udf_itimes(udf_node, acc, mod, birth); 5823 5824 /* set our implementation id */ 5825 if (udf_node->fe) { 5826 impl_id = &udf_node->fe->imp_id; 5827 } else { 5828 impl_id = &udf_node->efe->imp_id; 5829 } 5830 udf_set_regid(impl_id, IMPL_NAME); 5831 udf_add_impl_regid(ump, impl_id); 5832 5833 /* if called when mounted readonly, never write back */ 5834 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5835 return 0; 5836 5837 /* check if the node is dirty 'enough'*/ 5838 if (updflags & UPDATE_CLOSE) { 5839 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5840 } else { 5841 flags = udf_node->i_flags & IN_MODIFIED; 5842 } 5843 if (flags == 0) 5844 return 0; 5845 5846 /* determine if we need to write sync or async */ 5847 waitfor = 0; 5848 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5849 /* sync mounted */ 5850 waitfor = updflags & UPDATE_WAIT; 5851 if (updflags & UPDATE_DIROP) 5852 waitfor |= UPDATE_WAIT; 5853 } 5854 if (waitfor) 5855 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5856 5857 return 0; 5858 } 5859 5860 5861 /* --------------------------------------------------------------------- */ 5862 5863 5864 /* 5865 * Read one fid and process it into a dirent and advance to the next (*fid) 5866 * has to be allocated a logical block in size, (*dirent) struct dirent length 5867 */ 5868 5869 int 5870 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5871 struct fileid_desc *fid, struct dirent *dirent) 5872 { 5873 struct udf_node *dir_node = VTOI(vp); 5874 struct udf_mount *ump = dir_node->ump; 5875 struct file_entry *fe = dir_node->fe; 5876 struct extfile_entry *efe = dir_node->efe; 5877 uint32_t fid_size, lb_size; 5878 uint64_t file_size; 5879 char *fid_name; 5880 int enough, error; 5881 5882 assert(fid); 5883 assert(dirent); 5884 assert(dir_node); 5885 assert(offset); 5886 assert(*offset != 1); 5887 5888 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5889 /* check if we're past the end of the directory */ 5890 if (fe) { 5891 file_size = udf_rw64(fe->inf_len); 5892 } else { 5893 assert(dir_node->efe); 5894 file_size = udf_rw64(efe->inf_len); 5895 } 5896 if (*offset >= file_size) 5897 return EINVAL; 5898 5899 /* get maximum length of FID descriptor */ 5900 lb_size = udf_rw32(ump->logical_vol->lb_size); 5901 5902 /* initialise return values */ 5903 fid_size = 0; 5904 memset(dirent, 0, sizeof(struct dirent)); 5905 memset(fid, 0, lb_size); 5906 5907 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5908 if (!enough) { 5909 /* short dir ... */ 5910 return EIO; 5911 } 5912 5913 error = vn_rdwr(UIO_READ, vp, 5914 fid, MIN(file_size - (*offset), lb_size), *offset, 5915 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5916 NULL, NULL); 5917 if (error) 5918 return error; 5919 5920 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5921 /* 5922 * Check if we got a whole descriptor. 5923 * TODO Try to `resync' directory stream when something is very wrong. 5924 */ 5925 5926 /* check if our FID header is OK */ 5927 error = udf_check_tag(fid); 5928 if (error) { 5929 goto brokendir; 5930 } 5931 DPRINTF(FIDS, ("\ttag check ok\n")); 5932 5933 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5934 error = EIO; 5935 goto brokendir; 5936 } 5937 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5938 5939 /* check for length */ 5940 fid_size = udf_fidsize(fid); 5941 enough = (file_size - (*offset) >= fid_size); 5942 if (!enough) { 5943 error = EIO; 5944 goto brokendir; 5945 } 5946 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5947 5948 /* check FID contents */ 5949 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5950 brokendir: 5951 if (error) { 5952 /* note that is sometimes a bit quick to report */ 5953 printf("BROKEN DIRECTORY ENTRY\n"); 5954 /* RESYNC? */ 5955 /* TODO: use udf_resync_fid_stream */ 5956 return EIO; 5957 } 5958 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5959 5960 /* we got a whole and valid descriptor! */ 5961 DPRINTF(FIDS, ("\tinterpret FID\n")); 5962 5963 /* create resulting dirent structure */ 5964 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5965 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 5966 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5967 5968 /* '..' has no name, so provide one */ 5969 if (fid->file_char & UDF_FILE_CHAR_PAR) 5970 strcpy(dirent->d_name, ".."); 5971 5972 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5973 dirent->d_namlen = strlen(dirent->d_name); 5974 dirent->d_reclen = _DIRENT_SIZE(dirent); 5975 5976 /* 5977 * Note that its not worth trying to go for the filetypes now... its 5978 * too expensive too 5979 */ 5980 dirent->d_type = DT_UNKNOWN; 5981 5982 /* initial guess for filetype we can make */ 5983 if (fid->file_char & UDF_FILE_CHAR_DIR) 5984 dirent->d_type = DT_DIR; 5985 5986 /* advance */ 5987 *offset += fid_size; 5988 5989 return error; 5990 } 5991 5992 5993 /* --------------------------------------------------------------------- */ 5994 5995 static void 5996 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5997 int pass, int *ndirty) 5998 { 5999 struct udf_node *udf_node, *n_udf_node; 6000 struct vnode *vp; 6001 int vdirty, error; 6002 int on_type, on_flags, on_vnode; 6003 6004 derailed: 6005 KASSERT(mutex_owned(&mntvnode_lock)); 6006 6007 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 6008 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 6009 for (;udf_node; udf_node = n_udf_node) { 6010 DPRINTF(SYNC, (".")); 6011 6012 udf_node->i_flags &= ~IN_SYNCED; 6013 vp = udf_node->vnode; 6014 6015 mutex_enter(&vp->v_interlock); 6016 n_udf_node = LIST_NEXT(udf_node, sortchain); 6017 if (n_udf_node) 6018 n_udf_node->i_flags |= IN_SYNCED; 6019 6020 /* system nodes are not synced this way */ 6021 if (vp->v_vflag & VV_SYSTEM) { 6022 mutex_exit(&vp->v_interlock); 6023 continue; 6024 } 6025 6026 /* check if its dirty enough to even try */ 6027 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 6028 on_flags = ((udf_node->i_flags & 6029 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 6030 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 6031 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 6032 if (on_type || (on_flags || on_vnode)) { /* XXX */ 6033 /* not dirty (enough?) */ 6034 mutex_exit(&vp->v_interlock); 6035 continue; 6036 } 6037 6038 mutex_exit(&mntvnode_lock); 6039 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 6040 if (error) { 6041 mutex_enter(&mntvnode_lock); 6042 if (error == ENOENT) 6043 goto derailed; 6044 *ndirty += 1; 6045 continue; 6046 } 6047 6048 switch (pass) { 6049 case 1: 6050 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 6051 break; 6052 case 2: 6053 vdirty = vp->v_numoutput; 6054 if (vp->v_tag == VT_UDF) 6055 vdirty += udf_node->outstanding_bufs + 6056 udf_node->outstanding_nodedscr; 6057 if (vdirty == 0) 6058 VOP_FSYNC(vp, cred, 0,0,0); 6059 *ndirty += vdirty; 6060 break; 6061 case 3: 6062 vdirty = vp->v_numoutput; 6063 if (vp->v_tag == VT_UDF) 6064 vdirty += udf_node->outstanding_bufs + 6065 udf_node->outstanding_nodedscr; 6066 *ndirty += vdirty; 6067 break; 6068 } 6069 6070 vput(vp); 6071 mutex_enter(&mntvnode_lock); 6072 } 6073 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 6074 } 6075 6076 6077 void 6078 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 6079 { 6080 int dummy, ndirty; 6081 6082 mutex_enter(&mntvnode_lock); 6083 recount: 6084 dummy = 0; 6085 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6086 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6087 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 6088 6089 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6090 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6091 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 6092 6093 if (waitfor == MNT_WAIT) { 6094 ndirty = ump->devvp->v_numoutput; 6095 DPRINTF(NODE, ("counting pending blocks: on devvp %d\n", 6096 ndirty)); 6097 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 6098 DPRINTF(NODE, ("counted num dirty pending blocks %d\n", 6099 ndirty)); 6100 6101 if (ndirty) { 6102 /* 1/4 second wait */ 6103 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 6104 hz/4); 6105 goto recount; 6106 } 6107 } 6108 6109 mutex_exit(&mntvnode_lock); 6110 } 6111 6112 /* --------------------------------------------------------------------- */ 6113 6114 /* 6115 * Read and write file extent in/from the buffer. 6116 * 6117 * The splitup of the extent into seperate request-buffers is to minimise 6118 * copying around as much as possible. 6119 * 6120 * block based file reading and writing 6121 */ 6122 6123 static int 6124 udf_read_internal(struct udf_node *node, uint8_t *blob) 6125 { 6126 struct udf_mount *ump; 6127 struct file_entry *fe = node->fe; 6128 struct extfile_entry *efe = node->efe; 6129 uint64_t inflen; 6130 uint32_t sector_size; 6131 uint8_t *pos; 6132 int icbflags, addr_type; 6133 6134 /* get extent and do some paranoia checks */ 6135 ump = node->ump; 6136 sector_size = ump->discinfo.sector_size; 6137 6138 if (fe) { 6139 inflen = udf_rw64(fe->inf_len); 6140 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6141 icbflags = udf_rw16(fe->icbtag.flags); 6142 } else { 6143 assert(node->efe); 6144 inflen = udf_rw64(efe->inf_len); 6145 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6146 icbflags = udf_rw16(efe->icbtag.flags); 6147 } 6148 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6149 6150 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6151 assert(inflen < sector_size); 6152 6153 /* copy out info */ 6154 memset(blob, 0, sector_size); 6155 memcpy(blob, pos, inflen); 6156 6157 return 0; 6158 } 6159 6160 6161 static int 6162 udf_write_internal(struct udf_node *node, uint8_t *blob) 6163 { 6164 struct udf_mount *ump; 6165 struct file_entry *fe = node->fe; 6166 struct extfile_entry *efe = node->efe; 6167 uint64_t inflen; 6168 uint32_t sector_size; 6169 uint8_t *pos; 6170 int icbflags, addr_type; 6171 6172 /* get extent and do some paranoia checks */ 6173 ump = node->ump; 6174 sector_size = ump->discinfo.sector_size; 6175 6176 if (fe) { 6177 inflen = udf_rw64(fe->inf_len); 6178 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6179 icbflags = udf_rw16(fe->icbtag.flags); 6180 } else { 6181 assert(node->efe); 6182 inflen = udf_rw64(efe->inf_len); 6183 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6184 icbflags = udf_rw16(efe->icbtag.flags); 6185 } 6186 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6187 6188 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6189 assert(inflen < sector_size); 6190 6191 /* copy in blob */ 6192 /* memset(pos, 0, inflen); */ 6193 memcpy(pos, blob, inflen); 6194 6195 return 0; 6196 } 6197 6198 6199 void 6200 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6201 { 6202 struct buf *nestbuf; 6203 struct udf_mount *ump = udf_node->ump; 6204 uint64_t *mapping; 6205 uint64_t run_start; 6206 uint32_t sector_size; 6207 uint32_t buf_offset, sector, rbuflen, rblk; 6208 uint32_t from, lblkno; 6209 uint32_t sectors; 6210 uint8_t *buf_pos; 6211 int error, run_length, isdir, what; 6212 6213 sector_size = udf_node->ump->discinfo.sector_size; 6214 6215 from = buf->b_blkno; 6216 sectors = buf->b_bcount / sector_size; 6217 6218 isdir = (udf_node->vnode->v_type == VDIR); 6219 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6220 6221 /* assure we have enough translation slots */ 6222 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6223 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6224 6225 if (sectors > UDF_MAX_MAPPINGS) { 6226 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6227 buf->b_error = EIO; 6228 biodone(buf); 6229 return; 6230 } 6231 6232 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6233 6234 error = 0; 6235 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6236 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6237 if (error) { 6238 buf->b_error = error; 6239 biodone(buf); 6240 goto out; 6241 } 6242 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6243 6244 /* pre-check if its an internal */ 6245 if (*mapping == UDF_TRANS_INTERN) { 6246 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6247 if (error) 6248 buf->b_error = error; 6249 biodone(buf); 6250 goto out; 6251 } 6252 DPRINTF(READ, ("\tnot intern\n")); 6253 6254 #ifdef DEBUG 6255 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6256 printf("Returned translation table:\n"); 6257 for (sector = 0; sector < sectors; sector++) { 6258 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6259 } 6260 } 6261 #endif 6262 6263 /* request read-in of data from disc sheduler */ 6264 buf->b_resid = buf->b_bcount; 6265 for (sector = 0; sector < sectors; sector++) { 6266 buf_offset = sector * sector_size; 6267 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6268 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6269 6270 /* check if its zero or unmapped to stop reading */ 6271 switch (mapping[sector]) { 6272 case UDF_TRANS_UNMAPPED: 6273 case UDF_TRANS_ZERO: 6274 /* copy zero sector TODO runlength like below */ 6275 memset(buf_pos, 0, sector_size); 6276 DPRINTF(READ, ("\treturning zero sector\n")); 6277 nestiobuf_done(buf, sector_size, 0); 6278 break; 6279 default : 6280 DPRINTF(READ, ("\tread sector " 6281 "%"PRIu64"\n", mapping[sector])); 6282 6283 lblkno = from + sector; 6284 run_start = mapping[sector]; 6285 run_length = 1; 6286 while (sector < sectors-1) { 6287 if (mapping[sector+1] != mapping[sector]+1) 6288 break; 6289 run_length++; 6290 sector++; 6291 } 6292 6293 /* 6294 * nest an iobuf and mark it for async reading. Since 6295 * we're using nested buffers, they can't be cached by 6296 * design. 6297 */ 6298 rbuflen = run_length * sector_size; 6299 rblk = run_start * (sector_size/DEV_BSIZE); 6300 6301 nestbuf = getiobuf(NULL, true); 6302 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6303 /* nestbuf is B_ASYNC */ 6304 6305 /* identify this nestbuf */ 6306 nestbuf->b_lblkno = lblkno; 6307 assert(nestbuf->b_vp == udf_node->vnode); 6308 6309 /* CD shedules on raw blkno */ 6310 nestbuf->b_blkno = rblk; 6311 nestbuf->b_proc = NULL; 6312 nestbuf->b_rawblkno = rblk; 6313 nestbuf->b_udf_c_type = what; 6314 6315 udf_discstrat_queuebuf(ump, nestbuf); 6316 } 6317 } 6318 out: 6319 /* if we're synchronously reading, wait for the completion */ 6320 if ((buf->b_flags & B_ASYNC) == 0) 6321 biowait(buf); 6322 6323 DPRINTF(READ, ("\tend of read_filebuf\n")); 6324 free(mapping, M_TEMP); 6325 return; 6326 } 6327 6328 6329 void 6330 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6331 { 6332 struct buf *nestbuf; 6333 struct udf_mount *ump = udf_node->ump; 6334 uint64_t *mapping; 6335 uint64_t run_start; 6336 uint32_t lb_size; 6337 uint32_t buf_offset, lb_num, rbuflen, rblk; 6338 uint32_t from, lblkno; 6339 uint32_t num_lb; 6340 uint8_t *buf_pos; 6341 int error, run_length, isdir, what, s; 6342 6343 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6344 6345 from = buf->b_blkno; 6346 num_lb = buf->b_bcount / lb_size; 6347 6348 isdir = (udf_node->vnode->v_type == VDIR); 6349 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6350 6351 /* assure we have enough translation slots */ 6352 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6353 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6354 6355 if (num_lb > UDF_MAX_MAPPINGS) { 6356 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6357 buf->b_error = EIO; 6358 biodone(buf); 6359 return; 6360 } 6361 6362 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6363 6364 error = 0; 6365 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6366 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6367 if (error) { 6368 buf->b_error = error; 6369 biodone(buf); 6370 goto out; 6371 } 6372 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6373 6374 /* if its internally mapped, we can write it in the descriptor itself */ 6375 if (*mapping == UDF_TRANS_INTERN) { 6376 /* TODO paranoia check if we ARE going to have enough space */ 6377 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6378 if (error) 6379 buf->b_error = error; 6380 biodone(buf); 6381 goto out; 6382 } 6383 DPRINTF(WRITE, ("\tnot intern\n")); 6384 6385 /* request write out of data to disc sheduler */ 6386 buf->b_resid = buf->b_bcount; 6387 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6388 buf_offset = lb_num * lb_size; 6389 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6390 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6391 6392 /* 6393 * Mappings are not that important here. Just before we write 6394 * the lb_num we late-allocate them when needed and update the 6395 * mapping in the udf_node. 6396 */ 6397 6398 /* XXX why not ignore the mapping altogether ? */ 6399 /* TODO estimate here how much will be late-allocated */ 6400 DPRINTF(WRITE, ("\twrite lb_num " 6401 "%"PRIu64, mapping[lb_num])); 6402 6403 lblkno = from + lb_num; 6404 run_start = mapping[lb_num]; 6405 run_length = 1; 6406 while (lb_num < num_lb-1) { 6407 if (mapping[lb_num+1] != mapping[lb_num]+1) 6408 if (mapping[lb_num+1] != mapping[lb_num]) 6409 break; 6410 run_length++; 6411 lb_num++; 6412 } 6413 DPRINTF(WRITE, ("+ %d\n", run_length)); 6414 6415 /* nest an iobuf on the master buffer for the extent */ 6416 rbuflen = run_length * lb_size; 6417 rblk = run_start * (lb_size/DEV_BSIZE); 6418 6419 #if 0 6420 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6421 switch (mapping[lb_num]) { 6422 case UDF_TRANS_UNMAPPED: 6423 case UDF_TRANS_ZERO: 6424 rblk = -1; 6425 break; 6426 default: 6427 rblk = run_start * (lb_size/DEV_BSIZE); 6428 break; 6429 } 6430 #endif 6431 6432 nestbuf = getiobuf(NULL, true); 6433 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6434 /* nestbuf is B_ASYNC */ 6435 6436 /* identify this nestbuf */ 6437 nestbuf->b_lblkno = lblkno; 6438 KASSERT(nestbuf->b_vp == udf_node->vnode); 6439 6440 /* CD shedules on raw blkno */ 6441 nestbuf->b_blkno = rblk; 6442 nestbuf->b_proc = NULL; 6443 nestbuf->b_rawblkno = rblk; 6444 nestbuf->b_udf_c_type = what; 6445 6446 /* increment our outstanding bufs counter */ 6447 s = splbio(); 6448 udf_node->outstanding_bufs++; 6449 splx(s); 6450 6451 udf_discstrat_queuebuf(ump, nestbuf); 6452 } 6453 out: 6454 /* if we're synchronously writing, wait for the completion */ 6455 if ((buf->b_flags & B_ASYNC) == 0) 6456 biowait(buf); 6457 6458 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6459 free(mapping, M_TEMP); 6460 return; 6461 } 6462 6463 /* --------------------------------------------------------------------- */ 6464 6465 6466
Indexes created Fri Sep 26 20:09:58 GMT 2025