udf_subr.c revision 1.62
1 /* $NetBSD: udf_subr.c,v 1.62 2008/07/18 14:18:51 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 1.62 2008/07/18 14:18:51 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 logical volume open/closure actions */ 1819 if (n_virt) { 1820 ump->lvopen = 0; 1821 if (ump->discinfo.last_session_state == MMC_STATE_CLOSED) 1822 ump->lvopen |= UDF_OPEN_SESSION ; 1823 ump->lvclose = UDF_WRITE_VAT; 1824 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 1825 ump->lvclose |= UDF_CLOSE_SESSION; 1826 } else { 1827 /* `normal' rewritable or non sequential media */ 1828 ump->lvopen = UDF_WRITE_LVINT; 1829 ump->lvclose = UDF_WRITE_LVINT; 1830 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 1831 ump->lvopen |= UDF_APPENDONLY_LVINT; 1832 } 1833 1834 /* 1835 * Determine sheduler error behaviour. For virtual partions, update 1836 * the trackinfo; for sparable partitions replace a whole block on the 1837 * sparable table. Allways requeue. 1838 */ 1839 ump->lvreadwrite = 0; 1840 if (n_virt) 1841 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 1842 if (n_spar) 1843 ump->lvreadwrite = UDF_REMAP_BLOCK; 1844 1845 /* 1846 * Select our sheduler 1847 */ 1848 ump->strategy = &udf_strat_rmw; 1849 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 1850 ump->strategy = &udf_strat_sequential; 1851 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 1852 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 1853 ump->strategy = &udf_strat_direct; 1854 if (n_spar) 1855 ump->strategy = &udf_strat_rmw; 1856 1857 /* print results */ 1858 DPRINTF(VOLUMES, ("\tdata alloc scheme %d, meta alloc scheme %d\n", 1859 ump->data_alloc, ump->meta_alloc)); 1860 DPRINTF(VOLUMES, ("\tdata partition %d, metadata partition %d\n", 1861 ump->data_part, ump->metadata_part)); 1862 1863 bitmask_snprintf(ump->lvopen, UDFLOGVOL_BITS, bits, sizeof(bits)); 1864 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 1865 bitmask_snprintf(ump->lvclose, UDFLOGVOL_BITS, bits, sizeof(bits)); 1866 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 1867 bitmask_snprintf(ump->lvreadwrite, UDFONERROR_BITS, bits, sizeof(bits)); 1868 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 1869 1870 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 1871 (ump->strategy == &udf_strat_direct) ? "Direct" : 1872 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 1873 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 1874 1875 /* signal its OK for now */ 1876 return 0; 1877 } 1878 1879 /* --------------------------------------------------------------------- */ 1880 1881 /* 1882 * Update logical volume name in all structures that keep a record of it. We 1883 * use memmove since each of them might be specified as a source. 1884 * 1885 * Note that it doesn't update the VAT structure! 1886 */ 1887 1888 static void 1889 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 1890 { 1891 struct logvol_desc *lvd = NULL; 1892 struct fileset_desc *fsd = NULL; 1893 struct udf_lv_info *lvi = NULL; 1894 1895 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 1896 lvd = ump->logical_vol; 1897 fsd = ump->fileset_desc; 1898 if (ump->implementation) 1899 lvi = &ump->implementation->_impl_use.lv_info; 1900 1901 /* logvol's id might be specified as origional so use memmove here */ 1902 memmove(lvd->logvol_id, logvol_id, 128); 1903 if (fsd) 1904 memmove(fsd->logvol_id, logvol_id, 128); 1905 if (lvi) 1906 memmove(lvi->logvol_id, logvol_id, 128); 1907 } 1908 1909 /* --------------------------------------------------------------------- */ 1910 1911 void 1912 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 1913 uint32_t sector) 1914 { 1915 assert(ump->logical_vol); 1916 1917 tag->id = udf_rw16(tagid); 1918 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 1919 tag->cksum = 0; 1920 tag->reserved = 0; 1921 tag->serial_num = ump->logical_vol->tag.serial_num; 1922 tag->tag_loc = udf_rw32(sector); 1923 } 1924 1925 1926 uint64_t 1927 udf_advance_uniqueid(struct udf_mount *ump) 1928 { 1929 uint64_t unique_id; 1930 1931 mutex_enter(&ump->logvol_mutex); 1932 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 1933 if (unique_id < 0x10) 1934 unique_id = 0x10; 1935 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 1936 mutex_exit(&ump->logvol_mutex); 1937 1938 return unique_id; 1939 } 1940 1941 1942 static void 1943 udf_adjust_filecount(struct udf_node *udf_node, int sign) 1944 { 1945 struct udf_mount *ump = udf_node->ump; 1946 uint32_t num_dirs, num_files; 1947 int udf_file_type; 1948 1949 /* get file type */ 1950 if (udf_node->fe) { 1951 udf_file_type = udf_node->fe->icbtag.file_type; 1952 } else { 1953 udf_file_type = udf_node->efe->icbtag.file_type; 1954 } 1955 1956 /* adjust file count */ 1957 mutex_enter(&ump->allocate_mutex); 1958 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 1959 num_dirs = udf_rw32(ump->logvol_info->num_directories); 1960 ump->logvol_info->num_directories = 1961 udf_rw32((num_dirs + sign)); 1962 } else { 1963 num_files = udf_rw32(ump->logvol_info->num_files); 1964 ump->logvol_info->num_files = 1965 udf_rw32((num_files + sign)); 1966 } 1967 mutex_exit(&ump->allocate_mutex); 1968 } 1969 1970 1971 void 1972 udf_osta_charset(struct charspec *charspec) 1973 { 1974 bzero(charspec, sizeof(struct charspec)); 1975 charspec->type = 0; 1976 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 1977 } 1978 1979 1980 /* first call udf_set_regid and then the suffix */ 1981 void 1982 udf_set_regid(struct regid *regid, char const *name) 1983 { 1984 bzero(regid, sizeof(struct regid)); 1985 regid->flags = 0; /* not dirty and not protected */ 1986 strcpy((char *) regid->id, name); 1987 } 1988 1989 1990 void 1991 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 1992 { 1993 uint16_t *ver; 1994 1995 ver = (uint16_t *) regid->id_suffix; 1996 *ver = ump->logvol_info->min_udf_readver; 1997 } 1998 1999 2000 void 2001 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2002 { 2003 uint16_t *ver; 2004 2005 ver = (uint16_t *) regid->id_suffix; 2006 *ver = ump->logvol_info->min_udf_readver; 2007 2008 regid->id_suffix[2] = 4; /* unix */ 2009 regid->id_suffix[3] = 8; /* NetBSD */ 2010 } 2011 2012 2013 void 2014 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2015 { 2016 regid->id_suffix[0] = 4; /* unix */ 2017 regid->id_suffix[1] = 8; /* NetBSD */ 2018 } 2019 2020 2021 void 2022 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2023 { 2024 regid->id_suffix[0] = APP_VERSION_MAIN; 2025 regid->id_suffix[1] = APP_VERSION_SUB; 2026 } 2027 2028 static int 2029 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2030 struct long_ad *parent, uint64_t unique_id) 2031 { 2032 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2033 int fidsize = 40; 2034 2035 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2036 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2037 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2038 fid->icb = *parent; 2039 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2040 fid->tag.desc_crc_len = fidsize - UDF_DESC_TAG_LENGTH; 2041 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2042 2043 return fidsize; 2044 } 2045 2046 /* --------------------------------------------------------------------- */ 2047 2048 /* 2049 * Extended attribute support. UDF knows of 3 places for extended attributes: 2050 * 2051 * (a) inside the file's (e)fe in the length of the extended attribute area 2052 * before the allocation descriptors/filedata 2053 * 2054 * (b) in a file referenced by (e)fe->ext_attr_icb and 2055 * 2056 * (c) in the e(fe)'s associated stream directory that can hold various 2057 * sub-files. In the stream directory a few fixed named subfiles are reserved 2058 * for NT/Unix ACL's and OS/2 attributes. 2059 * 2060 * NOTE: Extended attributes are read randomly but allways written 2061 * *atomicaly*. For ACL's this interface is propably different but not known 2062 * to me yet. 2063 * 2064 * Order of extended attributes in a space : 2065 * ECMA 167 EAs 2066 * Non block aligned Implementation Use EAs 2067 * Block aligned Implementation Use EAs 2068 * Application Use EAs 2069 */ 2070 2071 static int 2072 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2073 { 2074 uint16_t *spos; 2075 2076 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2077 /* checksum valid? */ 2078 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2079 spos = (uint16_t *) implext->data; 2080 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2081 return EINVAL; 2082 } 2083 return 0; 2084 } 2085 2086 static void 2087 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2088 { 2089 uint16_t *spos; 2090 2091 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2092 /* set checksum */ 2093 spos = (uint16_t *) implext->data; 2094 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2095 } 2096 } 2097 2098 2099 int 2100 udf_extattr_search_intern(struct udf_node *node, 2101 uint32_t sattr, char const *sattrname, 2102 uint32_t *offsetp, uint32_t *lengthp) 2103 { 2104 struct extattrhdr_desc *eahdr; 2105 struct extattr_entry *attrhdr; 2106 struct impl_extattr_entry *implext; 2107 uint32_t offset, a_l, sector_size; 2108 int32_t l_ea; 2109 uint8_t *pos; 2110 int error; 2111 2112 /* get mountpoint */ 2113 sector_size = node->ump->discinfo.sector_size; 2114 2115 /* get information from fe/efe */ 2116 if (node->fe) { 2117 l_ea = udf_rw32(node->fe->l_ea); 2118 eahdr = (struct extattrhdr_desc *) node->fe->data; 2119 } else { 2120 assert(node->efe); 2121 l_ea = udf_rw32(node->efe->l_ea); 2122 eahdr = (struct extattrhdr_desc *) node->efe->data; 2123 } 2124 2125 /* something recorded here? */ 2126 if (l_ea == 0) 2127 return ENOENT; 2128 2129 /* check extended attribute tag; what to do if it fails? */ 2130 error = udf_check_tag(eahdr); 2131 if (error) 2132 return EINVAL; 2133 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2134 return EINVAL; 2135 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2136 if (error) 2137 return EINVAL; 2138 2139 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2140 2141 /* looking for Ecma-167 attributes? */ 2142 offset = sizeof(struct extattrhdr_desc); 2143 2144 /* looking for either implemenation use or application use */ 2145 if (sattr == 2048) { /* [4/48.10.8] */ 2146 offset = udf_rw32(eahdr->impl_attr_loc); 2147 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2148 return ENOENT; 2149 } 2150 if (sattr == 65536) { /* [4/48.10.9] */ 2151 offset = udf_rw32(eahdr->appl_attr_loc); 2152 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2153 return ENOENT; 2154 } 2155 2156 /* paranoia check offset and l_ea */ 2157 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2158 return EINVAL; 2159 2160 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2161 2162 /* find our extended attribute */ 2163 l_ea -= offset; 2164 pos = (uint8_t *) eahdr + offset; 2165 2166 while (l_ea >= sizeof(struct extattr_entry)) { 2167 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2168 attrhdr = (struct extattr_entry *) pos; 2169 implext = (struct impl_extattr_entry *) pos; 2170 2171 /* get complete attribute length and check for roque values */ 2172 a_l = udf_rw32(attrhdr->a_l); 2173 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2174 udf_rw32(attrhdr->type), 2175 attrhdr->subtype, a_l, l_ea)); 2176 if ((a_l == 0) || (a_l > l_ea)) 2177 return EINVAL; 2178 2179 if (attrhdr->type != sattr) 2180 goto next_attribute; 2181 2182 /* we might have found it! */ 2183 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2184 *offsetp = offset; 2185 *lengthp = a_l; 2186 return 0; /* success */ 2187 } 2188 2189 /* 2190 * Implementation use and application use extended attributes 2191 * have a name to identify. They share the same structure only 2192 * UDF implementation use extended attributes have a checksum 2193 * we need to check 2194 */ 2195 2196 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2197 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2198 /* we have found our appl/implementation attribute */ 2199 *offsetp = offset; 2200 *lengthp = a_l; 2201 return 0; /* success */ 2202 } 2203 2204 next_attribute: 2205 /* next attribute */ 2206 pos += a_l; 2207 l_ea -= a_l; 2208 offset += a_l; 2209 } 2210 /* not found */ 2211 return ENOENT; 2212 } 2213 2214 2215 static void 2216 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2217 struct extattr_entry *extattr) 2218 { 2219 struct file_entry *fe; 2220 struct extfile_entry *efe; 2221 struct extattrhdr_desc *extattrhdr; 2222 struct impl_extattr_entry *implext; 2223 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2224 uint32_t *l_eap, l_ad; 2225 uint16_t *spos; 2226 uint8_t *bpos, *data; 2227 2228 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2229 fe = &dscr->fe; 2230 data = fe->data; 2231 l_eap = &fe->l_ea; 2232 l_ad = udf_rw32(fe->l_ad); 2233 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2234 efe = &dscr->efe; 2235 data = efe->data; 2236 l_eap = &efe->l_ea; 2237 l_ad = udf_rw32(efe->l_ad); 2238 } else { 2239 panic("Bad tag passed to udf_extattr_insert_internal"); 2240 } 2241 2242 /* can't append already written to file descriptors yet */ 2243 assert(l_ad == 0); 2244 2245 /* should have a header! */ 2246 extattrhdr = (struct extattrhdr_desc *) data; 2247 l_ea = udf_rw32(*l_eap); 2248 if (l_ea == 0) { 2249 /* create empty extended attribute header */ 2250 exthdr_len = sizeof(struct extattrhdr_desc); 2251 2252 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2253 /* loc */ 0); 2254 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2255 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2256 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2257 2258 /* record extended attribute header length */ 2259 l_ea = exthdr_len; 2260 *l_eap = udf_rw32(l_ea); 2261 } 2262 2263 /* extract locations */ 2264 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2265 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2266 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2267 impl_attr_loc = l_ea; 2268 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2269 appl_attr_loc = l_ea; 2270 2271 /* Ecma 167 EAs */ 2272 if (udf_rw32(extattr->type) < 2048) { 2273 assert(impl_attr_loc == l_ea); 2274 assert(appl_attr_loc == l_ea); 2275 } 2276 2277 /* implementation use extended attributes */ 2278 if (udf_rw32(extattr->type) == 2048) { 2279 assert(appl_attr_loc == l_ea); 2280 2281 /* calculate and write extended attribute header checksum */ 2282 implext = (struct impl_extattr_entry *) extattr; 2283 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2284 spos = (uint16_t *) implext->data; 2285 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2286 } 2287 2288 /* application use extended attributes */ 2289 assert(udf_rw32(extattr->type) != 65536); 2290 assert(appl_attr_loc == l_ea); 2291 2292 /* append the attribute at the end of the current space */ 2293 bpos = data + udf_rw32(*l_eap); 2294 a_l = udf_rw32(extattr->a_l); 2295 2296 /* update impl. attribute locations */ 2297 if (udf_rw32(extattr->type) < 2048) { 2298 impl_attr_loc = l_ea + a_l; 2299 appl_attr_loc = l_ea + a_l; 2300 } 2301 if (udf_rw32(extattr->type) == 2048) { 2302 appl_attr_loc = l_ea + a_l; 2303 } 2304 2305 /* copy and advance */ 2306 memcpy(bpos, extattr, a_l); 2307 l_ea += a_l; 2308 *l_eap = udf_rw32(l_ea); 2309 2310 /* do the `dance` again backwards */ 2311 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2312 if (impl_attr_loc == l_ea) 2313 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2314 if (appl_attr_loc == l_ea) 2315 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2316 } 2317 2318 /* store offsets */ 2319 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2320 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2321 } 2322 2323 2324 /* --------------------------------------------------------------------- */ 2325 2326 static int 2327 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2328 { 2329 struct udf_mount *ump; 2330 struct udf_logvol_info *lvinfo; 2331 struct impl_extattr_entry *implext; 2332 struct vatlvext_extattr_entry lvext; 2333 const char *extstr = "*UDF VAT LVExtension"; 2334 uint64_t vat_uniqueid; 2335 uint32_t offset, a_l; 2336 uint8_t *ea_start, *lvextpos; 2337 int error; 2338 2339 /* get mountpoint and lvinfo */ 2340 ump = vat_node->ump; 2341 lvinfo = ump->logvol_info; 2342 2343 /* get information from fe/efe */ 2344 if (vat_node->fe) { 2345 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2346 ea_start = vat_node->fe->data; 2347 } else { 2348 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2349 ea_start = vat_node->efe->data; 2350 } 2351 2352 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2353 if (error) 2354 return error; 2355 2356 implext = (struct impl_extattr_entry *) (ea_start + offset); 2357 error = udf_impl_extattr_check(implext); 2358 if (error) 2359 return error; 2360 2361 /* paranoia */ 2362 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2363 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2364 return EINVAL; 2365 } 2366 2367 /* 2368 * we have found our "VAT LVExtension attribute. BUT due to a 2369 * bug in the specification it might not be word aligned so 2370 * copy first to avoid panics on some machines (!!) 2371 */ 2372 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2373 lvextpos = implext->data + udf_rw32(implext->iu_l); 2374 memcpy(&lvext, lvextpos, sizeof(lvext)); 2375 2376 /* check if it was updated the last time */ 2377 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2378 lvinfo->num_files = lvext.num_files; 2379 lvinfo->num_directories = lvext.num_directories; 2380 udf_update_logvolname(ump, lvext.logvol_id); 2381 } else { 2382 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2383 /* replace VAT LVExt by free space EA */ 2384 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2385 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2386 udf_calc_impl_extattr_checksum(implext); 2387 } 2388 2389 return 0; 2390 } 2391 2392 2393 static int 2394 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2395 { 2396 struct udf_mount *ump; 2397 struct udf_logvol_info *lvinfo; 2398 struct impl_extattr_entry *implext; 2399 struct vatlvext_extattr_entry lvext; 2400 const char *extstr = "*UDF VAT LVExtension"; 2401 uint64_t vat_uniqueid; 2402 uint32_t offset, a_l; 2403 uint8_t *ea_start, *lvextpos; 2404 int error; 2405 2406 /* get mountpoint and lvinfo */ 2407 ump = vat_node->ump; 2408 lvinfo = ump->logvol_info; 2409 2410 /* get information from fe/efe */ 2411 if (vat_node->fe) { 2412 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2413 ea_start = vat_node->fe->data; 2414 } else { 2415 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2416 ea_start = vat_node->efe->data; 2417 } 2418 2419 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2420 if (error) 2421 return error; 2422 /* found, it existed */ 2423 2424 /* paranoia */ 2425 implext = (struct impl_extattr_entry *) (ea_start + offset); 2426 error = udf_impl_extattr_check(implext); 2427 if (error) { 2428 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2429 return error; 2430 } 2431 /* it is correct */ 2432 2433 /* 2434 * we have found our "VAT LVExtension attribute. BUT due to a 2435 * bug in the specification it might not be word aligned so 2436 * copy first to avoid panics on some machines (!!) 2437 */ 2438 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2439 lvextpos = implext->data + udf_rw32(implext->iu_l); 2440 2441 lvext.unique_id_chk = vat_uniqueid; 2442 lvext.num_files = lvinfo->num_files; 2443 lvext.num_directories = lvinfo->num_directories; 2444 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2445 2446 memcpy(lvextpos, &lvext, sizeof(lvext)); 2447 2448 return 0; 2449 } 2450 2451 /* --------------------------------------------------------------------- */ 2452 2453 int 2454 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2455 { 2456 struct udf_mount *ump = vat_node->ump; 2457 2458 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2459 return EINVAL; 2460 2461 memcpy(blob, ump->vat_table + offset, size); 2462 return 0; 2463 } 2464 2465 int 2466 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2467 { 2468 struct udf_mount *ump = vat_node->ump; 2469 uint32_t offset_high; 2470 uint8_t *new_vat_table; 2471 2472 /* extent VAT allocation if needed */ 2473 offset_high = offset + size; 2474 if (offset_high >= ump->vat_table_alloc_len) { 2475 /* realloc */ 2476 new_vat_table = realloc(ump->vat_table, 2477 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2478 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2479 if (!new_vat_table) { 2480 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2481 return ENOMEM; 2482 } 2483 ump->vat_table = new_vat_table; 2484 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2485 } 2486 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2487 2488 memcpy(ump->vat_table + offset, blob, size); 2489 return 0; 2490 } 2491 2492 /* --------------------------------------------------------------------- */ 2493 2494 /* TODO support previous VAT location writeout */ 2495 static int 2496 udf_update_vat_descriptor(struct udf_mount *ump) 2497 { 2498 struct udf_node *vat_node = ump->vat_node; 2499 struct udf_logvol_info *lvinfo = ump->logvol_info; 2500 struct icb_tag *icbtag; 2501 struct udf_oldvat_tail *oldvat_tl; 2502 struct udf_vat *vat; 2503 uint64_t unique_id; 2504 uint32_t lb_size; 2505 uint8_t *raw_vat; 2506 int filetype, error; 2507 2508 KASSERT(vat_node); 2509 KASSERT(lvinfo); 2510 lb_size = udf_rw32(ump->logical_vol->lb_size); 2511 2512 /* get our new unique_id */ 2513 unique_id = udf_advance_uniqueid(ump); 2514 2515 /* get information from fe/efe */ 2516 if (vat_node->fe) { 2517 icbtag = &vat_node->fe->icbtag; 2518 vat_node->fe->unique_id = udf_rw64(unique_id); 2519 } else { 2520 icbtag = &vat_node->efe->icbtag; 2521 vat_node->efe->unique_id = udf_rw64(unique_id); 2522 } 2523 2524 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2525 filetype = icbtag->file_type; 2526 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2527 2528 /* allocate piece to process head or tail of VAT file */ 2529 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2530 2531 if (filetype == 0) { 2532 /* 2533 * Update "*UDF VAT LVExtension" extended attribute from the 2534 * lvint if present. 2535 */ 2536 udf_update_vat_extattr_from_lvid(vat_node); 2537 2538 /* setup identifying regid */ 2539 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2540 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2541 2542 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2543 udf_add_udf_regid(ump, &oldvat_tl->id); 2544 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2545 2546 /* write out new tail of virtual allocation table file */ 2547 error = udf_vat_write(vat_node, raw_vat, 2548 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2549 } else { 2550 /* compose the VAT2 header */ 2551 vat = (struct udf_vat *) raw_vat; 2552 memset(vat, 0, sizeof(struct udf_vat)); 2553 2554 vat->header_len = udf_rw16(152); /* as per spec */ 2555 vat->impl_use_len = udf_rw16(0); 2556 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2557 vat->prev_vat = udf_rw32(0xffffffff); 2558 vat->num_files = lvinfo->num_files; 2559 vat->num_directories = lvinfo->num_directories; 2560 vat->min_udf_readver = lvinfo->min_udf_readver; 2561 vat->min_udf_writever = lvinfo->min_udf_writever; 2562 vat->max_udf_writever = lvinfo->max_udf_writever; 2563 2564 error = udf_vat_write(vat_node, raw_vat, 2565 sizeof(struct udf_vat), 0); 2566 } 2567 free(raw_vat, M_TEMP); 2568 2569 return error; /* success! */ 2570 } 2571 2572 2573 int 2574 udf_writeout_vat(struct udf_mount *ump) 2575 { 2576 struct udf_node *vat_node = ump->vat_node; 2577 uint32_t vat_length; 2578 int error; 2579 2580 KASSERT(vat_node); 2581 2582 DPRINTF(CALL, ("udf_writeout_vat\n")); 2583 2584 mutex_enter(&ump->allocate_mutex); 2585 udf_update_vat_descriptor(ump); 2586 2587 /* write out the VAT contents ; TODO intelligent writing */ 2588 vat_length = ump->vat_table_len; 2589 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2590 ump->vat_table, ump->vat_table_len, 0, 2591 UIO_SYSSPACE, IO_NODELOCKED, FSCRED, NULL, NULL); 2592 if (error) { 2593 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2594 goto out; 2595 } 2596 2597 mutex_exit(&ump->allocate_mutex); 2598 2599 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 2600 error = VOP_FSYNC(ump->vat_node->vnode, 2601 FSCRED, FSYNC_WAIT, 0, 0); 2602 if (error) 2603 printf("udf_writeout_vat: error writing VAT node!\n"); 2604 out: 2605 2606 return error; 2607 } 2608 2609 /* --------------------------------------------------------------------- */ 2610 2611 /* 2612 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2613 * descriptor. If OK, read in complete VAT file. 2614 */ 2615 2616 static int 2617 udf_check_for_vat(struct udf_node *vat_node) 2618 { 2619 struct udf_mount *ump; 2620 struct icb_tag *icbtag; 2621 struct timestamp *mtime; 2622 struct udf_vat *vat; 2623 struct udf_oldvat_tail *oldvat_tl; 2624 struct udf_logvol_info *lvinfo; 2625 uint64_t unique_id; 2626 uint32_t vat_length; 2627 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2628 uint32_t sector_size; 2629 uint32_t *raw_vat; 2630 uint8_t *vat_table; 2631 char *regid_name; 2632 int filetype; 2633 int error; 2634 2635 /* vat_length is really 64 bits though impossible */ 2636 2637 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2638 if (!vat_node) 2639 return ENOENT; 2640 2641 /* get mount info */ 2642 ump = vat_node->ump; 2643 sector_size = udf_rw32(ump->logical_vol->lb_size); 2644 2645 /* check assertions */ 2646 assert(vat_node->fe || vat_node->efe); 2647 assert(ump->logvol_integrity); 2648 2649 /* set vnode type to regular file or we can't read from it! */ 2650 vat_node->vnode->v_type = VREG; 2651 2652 /* get information from fe/efe */ 2653 if (vat_node->fe) { 2654 vat_length = udf_rw64(vat_node->fe->inf_len); 2655 icbtag = &vat_node->fe->icbtag; 2656 mtime = &vat_node->fe->mtime; 2657 unique_id = udf_rw64(vat_node->fe->unique_id); 2658 } else { 2659 vat_length = udf_rw64(vat_node->efe->inf_len); 2660 icbtag = &vat_node->efe->icbtag; 2661 mtime = &vat_node->efe->mtime; 2662 unique_id = udf_rw64(vat_node->efe->unique_id); 2663 } 2664 2665 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2666 filetype = icbtag->file_type; 2667 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2668 return ENOENT; 2669 2670 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2671 2672 vat_table_alloc_len = 2673 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2674 * UDF_VAT_CHUNKSIZE; 2675 2676 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2677 M_CANFAIL | M_WAITOK); 2678 if (vat_table == NULL) { 2679 printf("allocation of %d bytes failed for VAT\n", 2680 vat_table_alloc_len); 2681 return ENOMEM; 2682 } 2683 2684 /* allocate piece to read in head or tail of VAT file */ 2685 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2686 2687 /* 2688 * check contents of the file if its the old 1.50 VAT table format. 2689 * Its notoriously broken and allthough some implementations support an 2690 * extention as defined in the UDF 1.50 errata document, its doubtfull 2691 * to be useable since a lot of implementations don't maintain it. 2692 */ 2693 lvinfo = ump->logvol_info; 2694 2695 if (filetype == 0) { 2696 /* definition */ 2697 vat_offset = 0; 2698 vat_entries = (vat_length-36)/4; 2699 2700 /* read in tail of virtual allocation table file */ 2701 error = vn_rdwr(UIO_READ, vat_node->vnode, 2702 (uint8_t *) raw_vat, 2703 sizeof(struct udf_oldvat_tail), 2704 vat_entries * 4, 2705 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2706 NULL, NULL); 2707 if (error) 2708 goto out; 2709 2710 /* check 1.50 VAT */ 2711 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2712 regid_name = (char *) oldvat_tl->id.id; 2713 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2714 if (error) { 2715 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2716 error = ENOENT; 2717 goto out; 2718 } 2719 2720 /* 2721 * update LVID from "*UDF VAT LVExtension" extended attribute 2722 * if present. 2723 */ 2724 udf_update_lvid_from_vat_extattr(vat_node); 2725 } else { 2726 /* read in head of virtual allocation table file */ 2727 error = vn_rdwr(UIO_READ, vat_node->vnode, 2728 (uint8_t *) raw_vat, 2729 sizeof(struct udf_vat), 0, 2730 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2731 NULL, NULL); 2732 if (error) 2733 goto out; 2734 2735 /* definition */ 2736 vat = (struct udf_vat *) raw_vat; 2737 vat_offset = vat->header_len; 2738 vat_entries = (vat_length - vat_offset)/4; 2739 2740 assert(lvinfo); 2741 lvinfo->num_files = vat->num_files; 2742 lvinfo->num_directories = vat->num_directories; 2743 lvinfo->min_udf_readver = vat->min_udf_readver; 2744 lvinfo->min_udf_writever = vat->min_udf_writever; 2745 lvinfo->max_udf_writever = vat->max_udf_writever; 2746 2747 udf_update_logvolname(ump, vat->logvol_id); 2748 } 2749 2750 /* read in complete VAT file */ 2751 error = vn_rdwr(UIO_READ, vat_node->vnode, 2752 vat_table, 2753 vat_length, 0, 2754 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2755 NULL, NULL); 2756 if (error) 2757 printf("read in of complete VAT file failed (error %d)\n", 2758 error); 2759 if (error) 2760 goto out; 2761 2762 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 2763 ump->logvol_integrity->lvint_next_unique_id = unique_id; 2764 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 2765 ump->logvol_integrity->time = *mtime; 2766 2767 ump->vat_table_len = vat_length; 2768 ump->vat_table_alloc_len = vat_table_alloc_len; 2769 ump->vat_table = vat_table; 2770 ump->vat_offset = vat_offset; 2771 ump->vat_entries = vat_entries; 2772 ump->vat_last_free_lb = 0; /* start at beginning */ 2773 2774 out: 2775 if (error) { 2776 if (vat_table) 2777 free(vat_table, M_UDFVOLD); 2778 } 2779 free(raw_vat, M_TEMP); 2780 2781 return error; 2782 } 2783 2784 /* --------------------------------------------------------------------- */ 2785 2786 static int 2787 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 2788 { 2789 struct udf_node *vat_node; 2790 struct long_ad icb_loc; 2791 uint32_t early_vat_loc, late_vat_loc, vat_loc; 2792 int error; 2793 2794 /* mapping info not needed */ 2795 mapping = mapping; 2796 2797 vat_loc = ump->last_possible_vat_location; 2798 early_vat_loc = vat_loc - 256; /* 8 blocks of 32 sectors */ 2799 2800 DPRINTF(VOLUMES, ("1) last possible %d, early_vat_loc %d \n", 2801 vat_loc, early_vat_loc)); 2802 early_vat_loc = MAX(early_vat_loc, ump->first_possible_vat_location); 2803 late_vat_loc = vat_loc + 1024; 2804 2805 DPRINTF(VOLUMES, ("2) last possible %d, early_vat_loc %d \n", 2806 vat_loc, early_vat_loc)); 2807 2808 /* start looking from the end of the range */ 2809 do { 2810 DPRINTF(VOLUMES, ("Checking for VAT at sector %d\n", vat_loc)); 2811 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 2812 icb_loc.loc.lb_num = udf_rw32(vat_loc); 2813 2814 error = udf_get_node(ump, &icb_loc, &vat_node); 2815 if (!error) { 2816 error = udf_check_for_vat(vat_node); 2817 DPRINTFIF(VOLUMES, !error, 2818 ("VAT accepted at %d\n", vat_loc)); 2819 if (!error) 2820 break; 2821 } 2822 if (vat_node) { 2823 vput(vat_node->vnode); 2824 vat_node = NULL; 2825 } 2826 vat_loc--; /* walk backwards */ 2827 } while (vat_loc >= early_vat_loc); 2828 2829 /* keep our VAT node around */ 2830 if (vat_node) { 2831 UDF_SET_SYSTEMFILE(vat_node->vnode); 2832 ump->vat_node = vat_node; 2833 } 2834 2835 return error; 2836 } 2837 2838 /* --------------------------------------------------------------------- */ 2839 2840 static int 2841 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 2842 { 2843 union dscrptr *dscr; 2844 struct part_map_spare *pms = &mapping->pms; 2845 uint32_t lb_num; 2846 int spar, error; 2847 2848 /* 2849 * The partition mapping passed on to us specifies the information we 2850 * need to locate and initialise the sparable partition mapping 2851 * information we need. 2852 */ 2853 2854 DPRINTF(VOLUMES, ("Read sparable table\n")); 2855 ump->sparable_packet_size = udf_rw16(pms->packet_len); 2856 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 2857 2858 for (spar = 0; spar < pms->n_st; spar++) { 2859 lb_num = pms->st_loc[spar]; 2860 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 2861 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 2862 if (!error && dscr) { 2863 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 2864 if (ump->sparing_table) 2865 free(ump->sparing_table, M_UDFVOLD); 2866 ump->sparing_table = &dscr->spt; 2867 dscr = NULL; 2868 DPRINTF(VOLUMES, 2869 ("Sparing table accepted (%d entries)\n", 2870 udf_rw16(ump->sparing_table->rt_l))); 2871 break; /* we're done */ 2872 } 2873 } 2874 if (dscr) 2875 free(dscr, M_UDFVOLD); 2876 } 2877 2878 if (ump->sparing_table) 2879 return 0; 2880 2881 return ENOENT; 2882 } 2883 2884 /* --------------------------------------------------------------------- */ 2885 2886 static int 2887 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 2888 { 2889 struct part_map_meta *pmm = &mapping->pmm; 2890 struct long_ad icb_loc; 2891 struct vnode *vp; 2892 int error; 2893 2894 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 2895 icb_loc.loc.part_num = pmm->part_num; 2896 icb_loc.loc.lb_num = pmm->meta_file_lbn; 2897 DPRINTF(VOLUMES, ("Metadata file\n")); 2898 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 2899 if (ump->metadata_node) { 2900 vp = ump->metadata_node->vnode; 2901 UDF_SET_SYSTEMFILE(vp); 2902 } 2903 2904 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 2905 if (icb_loc.loc.lb_num != -1) { 2906 DPRINTF(VOLUMES, ("Metadata copy file\n")); 2907 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 2908 if (ump->metadatamirror_node) { 2909 vp = ump->metadatamirror_node->vnode; 2910 UDF_SET_SYSTEMFILE(vp); 2911 } 2912 } 2913 2914 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 2915 if (icb_loc.loc.lb_num != -1) { 2916 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 2917 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 2918 if (ump->metadatabitmap_node) { 2919 vp = ump->metadatabitmap_node->vnode; 2920 UDF_SET_SYSTEMFILE(vp); 2921 } 2922 } 2923 2924 /* if we're mounting read-only we relax the requirements */ 2925 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 2926 error = EFAULT; 2927 if (ump->metadata_node) 2928 error = 0; 2929 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 2930 printf( "udf mount: Metadata file not readable, " 2931 "substituting Metadata copy file\n"); 2932 ump->metadata_node = ump->metadatamirror_node; 2933 ump->metadatamirror_node = NULL; 2934 error = 0; 2935 } 2936 } else { 2937 /* mounting read/write */ 2938 /* if (error) */ 2939 error = EROFS; 2940 } 2941 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 2942 "metadata files\n")); 2943 return error; 2944 } 2945 2946 /* --------------------------------------------------------------------- */ 2947 2948 int 2949 udf_read_vds_tables(struct udf_mount *ump) 2950 { 2951 union udf_pmap *mapping; 2952 /* struct udf_args *args = &ump->mount_args; */ 2953 uint32_t n_pm, mt_l; 2954 uint32_t log_part; 2955 uint8_t *pmap_pos; 2956 int pmap_size; 2957 int error; 2958 2959 /* Iterate again over the part mappings for locations */ 2960 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 2961 mt_l = udf_rw32(ump->logical_vol->mt_l); /* partmaps data length */ 2962 pmap_pos = ump->logical_vol->maps; 2963 2964 for (log_part = 0; log_part < n_pm; log_part++) { 2965 mapping = (union udf_pmap *) pmap_pos; 2966 switch (ump->vtop_tp[log_part]) { 2967 case UDF_VTOP_TYPE_PHYS : 2968 /* nothing */ 2969 break; 2970 case UDF_VTOP_TYPE_VIRT : 2971 /* search and load VAT */ 2972 error = udf_search_vat(ump, mapping); 2973 if (error) 2974 return ENOENT; 2975 break; 2976 case UDF_VTOP_TYPE_SPARABLE : 2977 /* load one of the sparable tables */ 2978 error = udf_read_sparables(ump, mapping); 2979 if (error) 2980 return ENOENT; 2981 break; 2982 case UDF_VTOP_TYPE_META : 2983 /* load the associated file descriptors */ 2984 error = udf_read_metadata_nodes(ump, mapping); 2985 if (error) 2986 return ENOENT; 2987 break; 2988 default: 2989 break; 2990 } 2991 pmap_size = pmap_pos[1]; 2992 pmap_pos += pmap_size; 2993 } 2994 2995 return 0; 2996 } 2997 2998 /* --------------------------------------------------------------------- */ 2999 3000 int 3001 udf_read_rootdirs(struct udf_mount *ump) 3002 { 3003 union dscrptr *dscr; 3004 /* struct udf_args *args = &ump->mount_args; */ 3005 struct udf_node *rootdir_node, *streamdir_node; 3006 struct long_ad fsd_loc, *dir_loc; 3007 uint32_t lb_num, dummy; 3008 uint32_t fsd_len; 3009 int dscr_type; 3010 int error; 3011 3012 /* TODO implement FSD reading in separate function like integrity? */ 3013 /* get fileset descriptor sequence */ 3014 fsd_loc = ump->logical_vol->lv_fsd_loc; 3015 fsd_len = udf_rw32(fsd_loc.len); 3016 3017 dscr = NULL; 3018 error = 0; 3019 while (fsd_len || error) { 3020 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3021 /* translate fsd_loc to lb_num */ 3022 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3023 if (error) 3024 break; 3025 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3026 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3027 /* end markers */ 3028 if (error || (dscr == NULL)) 3029 break; 3030 3031 /* analyse */ 3032 dscr_type = udf_rw16(dscr->tag.id); 3033 if (dscr_type == TAGID_TERM) 3034 break; 3035 if (dscr_type != TAGID_FSD) { 3036 free(dscr, M_UDFVOLD); 3037 return ENOENT; 3038 } 3039 3040 /* 3041 * TODO check for multiple fileset descriptors; its only 3042 * picking the last now. Also check for FSD 3043 * correctness/interpretability 3044 */ 3045 3046 /* update */ 3047 if (ump->fileset_desc) { 3048 free(ump->fileset_desc, M_UDFVOLD); 3049 } 3050 ump->fileset_desc = &dscr->fsd; 3051 dscr = NULL; 3052 3053 /* continue to the next fsd */ 3054 fsd_len -= ump->discinfo.sector_size; 3055 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3056 3057 /* follow up to fsd->next_ex (long_ad) if its not null */ 3058 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3059 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3060 fsd_loc = ump->fileset_desc->next_ex; 3061 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3062 } 3063 } 3064 if (dscr) 3065 free(dscr, M_UDFVOLD); 3066 3067 /* there has to be one */ 3068 if (ump->fileset_desc == NULL) 3069 return ENOENT; 3070 3071 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3072 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3073 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3074 3075 /* 3076 * Now the FSD is known, read in the rootdirectory and if one exists, 3077 * the system stream dir. Some files in the system streamdir are not 3078 * wanted in this implementation since they are not maintained. If 3079 * writing is enabled we'll delete these files if they exist. 3080 */ 3081 3082 rootdir_node = streamdir_node = NULL; 3083 dir_loc = NULL; 3084 3085 /* try to read in the rootdir */ 3086 dir_loc = &ump->fileset_desc->rootdir_icb; 3087 error = udf_get_node(ump, dir_loc, &rootdir_node); 3088 if (error) 3089 return ENOENT; 3090 3091 /* aparently it read in fine */ 3092 3093 /* 3094 * Try the system stream directory; not very likely in the ones we 3095 * test, but for completeness. 3096 */ 3097 dir_loc = &ump->fileset_desc->streamdir_icb; 3098 if (udf_rw32(dir_loc->len)) { 3099 printf("udf_read_rootdirs: streamdir defined "); 3100 error = udf_get_node(ump, dir_loc, &streamdir_node); 3101 if (error) { 3102 printf("but error in streamdir reading\n"); 3103 } else { 3104 printf("but ignored\n"); 3105 /* 3106 * TODO process streamdir `baddies' i.e. files we dont 3107 * want if R/W 3108 */ 3109 } 3110 } 3111 3112 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3113 3114 /* release the vnodes again; they'll be auto-recycled later */ 3115 if (streamdir_node) { 3116 vput(streamdir_node->vnode); 3117 } 3118 if (rootdir_node) { 3119 vput(rootdir_node->vnode); 3120 } 3121 3122 return 0; 3123 } 3124 3125 /* --------------------------------------------------------------------- */ 3126 3127 /* To make absolutely sure we are NOT returning zero, add one :) */ 3128 3129 long 3130 udf_calchash(struct long_ad *icbptr) 3131 { 3132 /* ought to be enough since each mountpoint has its own chain */ 3133 return udf_rw32(icbptr->loc.lb_num) + 1; 3134 } 3135 3136 3137 static struct udf_node * 3138 udf_hash_lookup(struct udf_mount *ump, struct long_ad *icbptr) 3139 { 3140 struct udf_node *node; 3141 struct vnode *vp; 3142 uint32_t hashline; 3143 3144 loop: 3145 mutex_enter(&ump->ihash_lock); 3146 3147 hashline = udf_calchash(icbptr) & UDF_INODE_HASHMASK; 3148 LIST_FOREACH(node, &ump->udf_nodes[hashline], hashchain) { 3149 assert(node); 3150 if (node->loc.loc.lb_num == icbptr->loc.lb_num && 3151 node->loc.loc.part_num == icbptr->loc.part_num) { 3152 vp = node->vnode; 3153 assert(vp); 3154 mutex_enter(&vp->v_interlock); 3155 mutex_exit(&ump->ihash_lock); 3156 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK)) 3157 goto loop; 3158 return node; 3159 } 3160 } 3161 mutex_exit(&ump->ihash_lock); 3162 3163 return NULL; 3164 } 3165 3166 3167 static void 3168 udf_sorted_list_insert(struct udf_node *node) 3169 { 3170 struct udf_mount *ump; 3171 struct udf_node *s_node, *last_node; 3172 uint32_t loc, s_loc; 3173 3174 ump = node->ump; 3175 last_node = NULL; /* XXX gcc */ 3176 3177 if (LIST_EMPTY(&ump->sorted_udf_nodes)) { 3178 LIST_INSERT_HEAD(&ump->sorted_udf_nodes, node, sortchain); 3179 return; 3180 } 3181 3182 /* 3183 * We sort on logical block number here and not on physical block 3184 * number here. Ideally we should go for the physical block nr to get 3185 * better sync performance though this sort will ensure that packets 3186 * won't get spit up unnessisarily. 3187 */ 3188 3189 loc = udf_rw32(node->loc.loc.lb_num); 3190 LIST_FOREACH(s_node, &ump->sorted_udf_nodes, sortchain) { 3191 s_loc = udf_rw32(s_node->loc.loc.lb_num); 3192 if (s_loc > loc) { 3193 LIST_INSERT_BEFORE(s_node, node, sortchain); 3194 return; 3195 } 3196 last_node = s_node; 3197 } 3198 LIST_INSERT_AFTER(last_node, node, sortchain); 3199 } 3200 3201 3202 static void 3203 udf_register_node(struct udf_node *node) 3204 { 3205 struct udf_mount *ump; 3206 struct udf_node *chk; 3207 uint32_t hashline; 3208 3209 ump = node->ump; 3210 mutex_enter(&ump->ihash_lock); 3211 3212 /* add to our hash table */ 3213 hashline = udf_calchash(&node->loc) & UDF_INODE_HASHMASK; 3214 #ifdef DEBUG 3215 LIST_FOREACH(chk, &ump->udf_nodes[hashline], hashchain) { 3216 assert(chk); 3217 if (chk->loc.loc.lb_num == node->loc.loc.lb_num && 3218 chk->loc.loc.part_num == node->loc.loc.part_num) 3219 panic("Double node entered\n"); 3220 } 3221 #else 3222 chk = NULL; 3223 #endif 3224 LIST_INSERT_HEAD(&ump->udf_nodes[hashline], node, hashchain); 3225 3226 /* add to our sorted list */ 3227 udf_sorted_list_insert(node); 3228 3229 mutex_exit(&ump->ihash_lock); 3230 } 3231 3232 3233 static void 3234 udf_deregister_node(struct udf_node *node) 3235 { 3236 struct udf_mount *ump; 3237 3238 ump = node->ump; 3239 mutex_enter(&ump->ihash_lock); 3240 3241 /* from hash and sorted list */ 3242 LIST_REMOVE(node, hashchain); 3243 LIST_REMOVE(node, sortchain); 3244 3245 mutex_exit(&ump->ihash_lock); 3246 } 3247 3248 /* --------------------------------------------------------------------- */ 3249 3250 int 3251 udf_open_logvol(struct udf_mount *ump) 3252 { 3253 int logvol_integrity; 3254 int error; 3255 3256 /* already/still open? */ 3257 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3258 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3259 return 0; 3260 3261 /* can we open it ? */ 3262 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3263 return EROFS; 3264 3265 /* setup write parameters */ 3266 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3267 if ((error = udf_setup_writeparams(ump)) != 0) 3268 return error; 3269 3270 /* determine data and metadata tracks (most likely same) */ 3271 error = udf_search_writing_tracks(ump); 3272 if (error) { 3273 /* most likely lack of space */ 3274 printf("udf_open_logvol: error searching writing tracks\n"); 3275 return EROFS; 3276 } 3277 3278 /* writeout/update lvint on disc or only in memory */ 3279 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3280 if (ump->lvopen & UDF_OPEN_SESSION) { 3281 /* TODO implement writeout of VRS + VDS */ 3282 printf( "udf_open_logvol:Opening a closed session not yet " 3283 "implemented\n"); 3284 return EROFS; 3285 3286 /* determine data and metadata tracks again */ 3287 error = udf_search_writing_tracks(ump); 3288 } 3289 3290 /* mark it open */ 3291 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3292 3293 /* do we need to write it out? */ 3294 if (ump->lvopen & UDF_WRITE_LVINT) { 3295 error = udf_writeout_lvint(ump, ump->lvopen); 3296 /* if we couldn't write it mark it closed again */ 3297 if (error) { 3298 ump->logvol_integrity->integrity_type = 3299 udf_rw32(UDF_INTEGRITY_CLOSED); 3300 return error; 3301 } 3302 } 3303 3304 return 0; 3305 } 3306 3307 3308 int 3309 udf_close_logvol(struct udf_mount *ump, int mntflags) 3310 { 3311 int logvol_integrity; 3312 int error = 0; 3313 int n; 3314 3315 /* already/still closed? */ 3316 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3317 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3318 return 0; 3319 3320 /* writeout/update lvint or write out VAT */ 3321 DPRINTF(VOLUMES, ("Closing logical volume\n")); 3322 if (ump->lvclose & UDF_WRITE_VAT) { 3323 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3324 3325 /* preprocess the VAT node; its modified on every writeout */ 3326 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3327 udf_update_vat_descriptor(ump->vat_node->ump); 3328 3329 /* write out the VAT node */ 3330 vflushbuf(ump->vat_node->vnode, 1 /* sync */); 3331 for (n = 0; n < 16; n++) { 3332 ump->vat_node->i_flags |= IN_MODIFIED; 3333 error = VOP_FSYNC(ump->vat_node->vnode, 3334 FSCRED, FSYNC_WAIT, 0, 0); 3335 } 3336 if (error) { 3337 printf("udf_close_logvol: writeout of VAT failed\n"); 3338 return error; 3339 } 3340 } 3341 3342 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3343 error = udf_write_partition_spacetables(ump, 1 /* waitfor */); 3344 if (error) { 3345 printf( "udf_close_logvol: writeout of space tables " 3346 "failed\n"); 3347 return error; 3348 } 3349 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3350 } 3351 3352 if (ump->lvclose & UDF_CLOSE_SESSION) { 3353 printf("TODO: Closing a session is not yet implemented\n"); 3354 return EROFS; 3355 ump->lvopen |= UDF_OPEN_SESSION; 3356 } 3357 3358 /* mark it closed */ 3359 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3360 3361 /* do we need to write out the logical volume integrity */ 3362 if (ump->lvclose & UDF_WRITE_LVINT) 3363 error = udf_writeout_lvint(ump, ump->lvopen); 3364 if (error) { 3365 /* HELP now what? mark it open again for now */ 3366 ump->logvol_integrity->integrity_type = 3367 udf_rw32(UDF_INTEGRITY_OPEN); 3368 return error; 3369 } 3370 3371 (void) udf_synchronise_caches(ump); 3372 3373 return 0; 3374 } 3375 3376 /* --------------------------------------------------------------------- */ 3377 3378 /* 3379 * Genfs interfacing 3380 * 3381 * static const struct genfs_ops udf_genfsops = { 3382 * .gop_size = genfs_size, 3383 * size of transfers 3384 * .gop_alloc = udf_gop_alloc, 3385 * allocate len bytes at offset 3386 * .gop_write = genfs_gop_write, 3387 * putpages interface code 3388 * .gop_markupdate = udf_gop_markupdate, 3389 * set update/modify flags etc. 3390 * } 3391 */ 3392 3393 /* 3394 * Genfs interface. These four functions are the only ones defined though not 3395 * documented... great.... 3396 */ 3397 3398 /* 3399 * Callback from genfs to allocate len bytes at offset off; only called when 3400 * filling up gaps in the allocation. 3401 */ 3402 /* XXX should be check if there is space enough in udf_gop_alloc? */ 3403 static int 3404 udf_gop_alloc(struct vnode *vp, off_t off, 3405 off_t len, int flags, kauth_cred_t cred) 3406 { 3407 #if 0 3408 struct udf_node *udf_node = VTOI(vp); 3409 struct udf_mount *ump = udf_node->ump; 3410 uint32_t lb_size, num_lb; 3411 #endif 3412 3413 DPRINTF(NOTIMPL, ("udf_gop_alloc not implemented\n")); 3414 DPRINTF(ALLOC, ("udf_gop_alloc called for %"PRIu64" bytes\n", len)); 3415 3416 return 0; 3417 } 3418 3419 3420 /* 3421 * callback from genfs to update our flags 3422 */ 3423 static void 3424 udf_gop_markupdate(struct vnode *vp, int flags) 3425 { 3426 struct udf_node *udf_node = VTOI(vp); 3427 u_long mask = 0; 3428 3429 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 3430 mask = IN_ACCESS; 3431 } 3432 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 3433 if (vp->v_type == VREG) { 3434 mask |= IN_CHANGE | IN_UPDATE; 3435 } else { 3436 mask |= IN_MODIFY; 3437 } 3438 } 3439 if (mask) { 3440 udf_node->i_flags |= mask; 3441 } 3442 } 3443 3444 3445 static const struct genfs_ops udf_genfsops = { 3446 .gop_size = genfs_size, 3447 .gop_alloc = udf_gop_alloc, 3448 .gop_write = genfs_gop_write_rwmap, 3449 .gop_markupdate = udf_gop_markupdate, 3450 }; 3451 3452 3453 /* --------------------------------------------------------------------- */ 3454 3455 int 3456 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 3457 { 3458 union dscrptr *dscr; 3459 int error; 3460 3461 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK); 3462 bzero(dscr, ump->discinfo.sector_size); 3463 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 3464 3465 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 3466 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 3467 (void) udf_validate_tag_and_crc_sums(dscr); 3468 3469 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 3470 dscr, sector, sector); 3471 3472 free(dscr, M_TEMP); 3473 3474 return error; 3475 } 3476 3477 3478 /* --------------------------------------------------------------------- */ 3479 3480 /* UDF<->unix converters */ 3481 3482 /* --------------------------------------------------------------------- */ 3483 3484 static mode_t 3485 udf_perm_to_unix_mode(uint32_t perm) 3486 { 3487 mode_t mode; 3488 3489 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 3490 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 3491 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 3492 3493 return mode; 3494 } 3495 3496 /* --------------------------------------------------------------------- */ 3497 3498 static uint32_t 3499 unix_mode_to_udf_perm(mode_t mode) 3500 { 3501 uint32_t perm; 3502 3503 perm = ((mode & S_IRWXO) ); 3504 perm |= ((mode & S_IRWXG) << 2); 3505 perm |= ((mode & S_IRWXU) << 4); 3506 perm |= ((mode & S_IWOTH) << 3); 3507 perm |= ((mode & S_IWGRP) << 5); 3508 perm |= ((mode & S_IWUSR) << 7); 3509 3510 return perm; 3511 } 3512 3513 /* --------------------------------------------------------------------- */ 3514 3515 static uint32_t 3516 udf_icb_to_unix_filetype(uint32_t icbftype) 3517 { 3518 switch (icbftype) { 3519 case UDF_ICB_FILETYPE_DIRECTORY : 3520 case UDF_ICB_FILETYPE_STREAMDIR : 3521 return S_IFDIR; 3522 case UDF_ICB_FILETYPE_FIFO : 3523 return S_IFIFO; 3524 case UDF_ICB_FILETYPE_CHARDEVICE : 3525 return S_IFCHR; 3526 case UDF_ICB_FILETYPE_BLOCKDEVICE : 3527 return S_IFBLK; 3528 case UDF_ICB_FILETYPE_RANDOMACCESS : 3529 case UDF_ICB_FILETYPE_REALTIME : 3530 return S_IFREG; 3531 case UDF_ICB_FILETYPE_SYMLINK : 3532 return S_IFLNK; 3533 case UDF_ICB_FILETYPE_SOCKET : 3534 return S_IFSOCK; 3535 } 3536 /* no idea what this is */ 3537 return 0; 3538 } 3539 3540 /* --------------------------------------------------------------------- */ 3541 3542 void 3543 udf_to_unix_name(char *result, int result_len, char *id, int len, 3544 struct charspec *chsp) 3545 { 3546 uint16_t *raw_name, *unix_name; 3547 uint16_t *inchp, ch; 3548 uint8_t *outchp; 3549 const char *osta_id = "OSTA Compressed Unicode"; 3550 int ucode_chars, nice_uchars, is_osta_typ0, nout; 3551 3552 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 3553 unix_name = raw_name + 1024; /* split space in half */ 3554 assert(sizeof(char) == sizeof(uint8_t)); 3555 outchp = (uint8_t *) result; 3556 3557 is_osta_typ0 = (chsp->type == 0); 3558 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3559 if (is_osta_typ0) { 3560 /* TODO clean up */ 3561 *raw_name = *unix_name = 0; 3562 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 3563 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 3564 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 3565 /* output UTF8 */ 3566 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 3567 ch = *inchp; 3568 nout = wput_utf8(outchp, result_len, ch); 3569 outchp += nout; result_len -= nout; 3570 if (!ch) break; 3571 } 3572 *outchp++ = 0; 3573 } else { 3574 /* assume 8bit char length byte latin-1 */ 3575 assert(*id == 8); 3576 assert(strlen((char *) (id+1)) <= MAXNAMLEN); 3577 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 3578 } 3579 free(raw_name, M_UDFTEMP); 3580 } 3581 3582 /* --------------------------------------------------------------------- */ 3583 3584 void 3585 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 3586 struct charspec *chsp) 3587 { 3588 uint16_t *raw_name; 3589 uint16_t *outchp; 3590 const char *inchp; 3591 const char *osta_id = "OSTA Compressed Unicode"; 3592 int udf_chars, is_osta_typ0, bits; 3593 size_t cnt; 3594 3595 /* allocate temporary unicode-16 buffer */ 3596 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 3597 3598 /* convert utf8 to unicode-16 */ 3599 *raw_name = 0; 3600 inchp = name; 3601 outchp = raw_name; 3602 bits = 8; 3603 for (cnt = name_len, udf_chars = 0; cnt;) { 3604 /*###3490 [cc] warning: passing argument 2 of 'wget_utf8' from incompatible pointer type%%%*/ 3605 *outchp = wget_utf8(&inchp, &cnt); 3606 if (*outchp > 0xff) 3607 bits=16; 3608 outchp++; 3609 udf_chars++; 3610 } 3611 /* null terminate just in case */ 3612 *outchp++ = 0; 3613 3614 is_osta_typ0 = (chsp->type == 0); 3615 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 3616 if (is_osta_typ0) { 3617 udf_chars = udf_CompressUnicode(udf_chars, bits, 3618 (unicode_t *) raw_name, 3619 (byte *) result); 3620 } else { 3621 printf("unix to udf name: no CHSP0 ?\n"); 3622 /* XXX assume 8bit char length byte latin-1 */ 3623 *result++ = 8; udf_chars = 1; 3624 strncpy(result, name + 1, name_len); 3625 udf_chars += name_len; 3626 } 3627 *result_len = udf_chars; 3628 free(raw_name, M_UDFTEMP); 3629 } 3630 3631 /* --------------------------------------------------------------------- */ 3632 3633 void 3634 udf_timestamp_to_timespec(struct udf_mount *ump, 3635 struct timestamp *timestamp, 3636 struct timespec *timespec) 3637 { 3638 struct clock_ymdhms ymdhms; 3639 uint32_t usecs, secs, nsecs; 3640 uint16_t tz; 3641 3642 /* fill in ymdhms structure from timestamp */ 3643 memset(&ymdhms, 0, sizeof(ymdhms)); 3644 ymdhms.dt_year = udf_rw16(timestamp->year); 3645 ymdhms.dt_mon = timestamp->month; 3646 ymdhms.dt_day = timestamp->day; 3647 ymdhms.dt_wday = 0; /* ? */ 3648 ymdhms.dt_hour = timestamp->hour; 3649 ymdhms.dt_min = timestamp->minute; 3650 ymdhms.dt_sec = timestamp->second; 3651 3652 secs = clock_ymdhms_to_secs(&ymdhms); 3653 usecs = timestamp->usec + 3654 100*timestamp->hund_usec + 10000*timestamp->centisec; 3655 nsecs = usecs * 1000; 3656 3657 /* 3658 * Calculate the time zone. The timezone is 12 bit signed 2's 3659 * compliment, so we gotta do some extra magic to handle it right. 3660 */ 3661 tz = udf_rw16(timestamp->type_tz); 3662 tz &= 0x0fff; /* only lower 12 bits are significant */ 3663 if (tz & 0x0800) /* sign extention */ 3664 tz |= 0xf000; 3665 3666 /* TODO check timezone conversion */ 3667 /* check if we are specified a timezone to convert */ 3668 if (udf_rw16(timestamp->type_tz) & 0x1000) { 3669 if ((int16_t) tz != -2047) 3670 secs -= (int16_t) tz * 60; 3671 } else { 3672 secs -= ump->mount_args.gmtoff; 3673 } 3674 3675 timespec->tv_sec = secs; 3676 timespec->tv_nsec = nsecs; 3677 } 3678 3679 3680 void 3681 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 3682 { 3683 struct clock_ymdhms ymdhms; 3684 uint32_t husec, usec, csec; 3685 3686 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 3687 3688 usec = timespec->tv_nsec / 1000; 3689 husec = usec / 100; 3690 usec -= husec * 100; /* only 0-99 in usec */ 3691 csec = husec / 100; /* only 0-99 in csec */ 3692 husec -= csec * 100; /* only 0-99 in husec */ 3693 3694 /* set method 1 for CUT/GMT */ 3695 timestamp->type_tz = udf_rw16((1<<12) + 0); 3696 timestamp->year = udf_rw16(ymdhms.dt_year); 3697 timestamp->month = ymdhms.dt_mon; 3698 timestamp->day = ymdhms.dt_day; 3699 timestamp->hour = ymdhms.dt_hour; 3700 timestamp->minute = ymdhms.dt_min; 3701 timestamp->second = ymdhms.dt_sec; 3702 timestamp->centisec = csec; 3703 timestamp->hund_usec = husec; 3704 timestamp->usec = usec; 3705 } 3706 3707 /* --------------------------------------------------------------------- */ 3708 3709 /* 3710 * Attribute and filetypes converters with get/set pairs 3711 */ 3712 3713 uint32_t 3714 udf_getaccessmode(struct udf_node *udf_node) 3715 { 3716 struct file_entry *fe = udf_node->fe;; 3717 struct extfile_entry *efe = udf_node->efe; 3718 uint32_t udf_perm, icbftype; 3719 uint32_t mode, ftype; 3720 uint16_t icbflags; 3721 3722 UDF_LOCK_NODE(udf_node, 0); 3723 if (fe) { 3724 udf_perm = udf_rw32(fe->perm); 3725 icbftype = fe->icbtag.file_type; 3726 icbflags = udf_rw16(fe->icbtag.flags); 3727 } else { 3728 assert(udf_node->efe); 3729 udf_perm = udf_rw32(efe->perm); 3730 icbftype = efe->icbtag.file_type; 3731 icbflags = udf_rw16(efe->icbtag.flags); 3732 } 3733 3734 mode = udf_perm_to_unix_mode(udf_perm); 3735 ftype = udf_icb_to_unix_filetype(icbftype); 3736 3737 /* set suid, sgid, sticky from flags in fe/efe */ 3738 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 3739 mode |= S_ISUID; 3740 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 3741 mode |= S_ISGID; 3742 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 3743 mode |= S_ISVTX; 3744 3745 UDF_UNLOCK_NODE(udf_node, 0); 3746 3747 return mode | ftype; 3748 } 3749 3750 3751 void 3752 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 3753 { 3754 struct file_entry *fe = udf_node->fe; 3755 struct extfile_entry *efe = udf_node->efe; 3756 uint32_t udf_perm; 3757 uint16_t icbflags; 3758 3759 UDF_LOCK_NODE(udf_node, 0); 3760 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 3761 if (fe) { 3762 icbflags = udf_rw16(fe->icbtag.flags); 3763 } else { 3764 icbflags = udf_rw16(efe->icbtag.flags); 3765 } 3766 3767 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 3768 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 3769 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 3770 if (mode & S_ISUID) 3771 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 3772 if (mode & S_ISGID) 3773 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 3774 if (mode & S_ISVTX) 3775 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 3776 3777 if (fe) { 3778 fe->perm = udf_rw32(udf_perm); 3779 fe->icbtag.flags = udf_rw16(icbflags); 3780 } else { 3781 efe->perm = udf_rw32(udf_perm); 3782 efe->icbtag.flags = udf_rw16(icbflags); 3783 } 3784 3785 UDF_UNLOCK_NODE(udf_node, 0); 3786 } 3787 3788 3789 void 3790 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 3791 { 3792 struct udf_mount *ump = udf_node->ump; 3793 struct file_entry *fe = udf_node->fe; 3794 struct extfile_entry *efe = udf_node->efe; 3795 uid_t uid; 3796 gid_t gid; 3797 3798 UDF_LOCK_NODE(udf_node, 0); 3799 if (fe) { 3800 uid = (uid_t)udf_rw32(fe->uid); 3801 gid = (gid_t)udf_rw32(fe->gid); 3802 } else { 3803 assert(udf_node->efe); 3804 uid = (uid_t)udf_rw32(efe->uid); 3805 gid = (gid_t)udf_rw32(efe->gid); 3806 } 3807 3808 /* do the uid/gid translation game */ 3809 if ((uid == (uid_t) -1) && (gid == (gid_t) -1)) { 3810 uid = ump->mount_args.anon_uid; 3811 gid = ump->mount_args.anon_gid; 3812 } 3813 *uidp = uid; 3814 *gidp = gid; 3815 3816 UDF_UNLOCK_NODE(udf_node, 0); 3817 } 3818 3819 3820 void 3821 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 3822 { 3823 struct udf_mount *ump = udf_node->ump; 3824 struct file_entry *fe = udf_node->fe; 3825 struct extfile_entry *efe = udf_node->efe; 3826 uid_t nobody_uid; 3827 gid_t nobody_gid; 3828 3829 UDF_LOCK_NODE(udf_node, 0); 3830 3831 /* do the uid/gid translation game */ 3832 nobody_uid = ump->mount_args.nobody_uid; 3833 nobody_gid = ump->mount_args.nobody_gid; 3834 if ((uid == nobody_uid) && (gid == nobody_gid)) { 3835 uid = (uid_t) -1; 3836 gid = (gid_t) -1; 3837 } 3838 3839 if (fe) { 3840 fe->uid = udf_rw32((uint32_t) uid); 3841 fe->gid = udf_rw32((uint32_t) gid); 3842 } else { 3843 efe->uid = udf_rw32((uint32_t) uid); 3844 efe->gid = udf_rw32((uint32_t) gid); 3845 } 3846 3847 UDF_UNLOCK_NODE(udf_node, 0); 3848 } 3849 3850 3851 /* --------------------------------------------------------------------- */ 3852 3853 /* 3854 * UDF dirhash implementation 3855 */ 3856 3857 static uint32_t 3858 udf_dirhash_hash(const char *str, int namelen) 3859 { 3860 uint32_t hash = 5381; 3861 int i, c; 3862 3863 for (i = 0; i < namelen; i++) { 3864 c = *str++; 3865 hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ 3866 } 3867 return hash; 3868 } 3869 3870 3871 static void 3872 udf_dirhash_init(struct udf_node *dir_node) 3873 { 3874 struct udf_dirhash *dirh; 3875 uint32_t hashline; 3876 3877 if (dir_node->dir_hash == NULL) { 3878 dirh = pool_get(&udf_dirhash_pool, PR_WAITOK); 3879 dir_node->dir_hash = dirh; 3880 memset(dirh, 0, sizeof(struct udf_dirhash)); 3881 for (hashline = 0; hashline < UDF_DIRHASH_HASHSIZE; hashline++) 3882 LIST_INIT(&dirh->entries[hashline]); 3883 } 3884 } 3885 3886 3887 static void 3888 udf_dirhash_destroy(struct udf_node *dir_node) 3889 { 3890 struct udf_dirhash *dirh; 3891 struct udf_dirhash_entry *dirh_e; 3892 uint32_t hashline; 3893 3894 if (dir_node->dir_hash == NULL) 3895 return; 3896 3897 dirh = dir_node->dir_hash; 3898 for (hashline = 0; hashline < UDF_DIRHASH_HASHSIZE; hashline++) { 3899 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 3900 while (dirh_e) { 3901 LIST_REMOVE(dirh_e, next); 3902 pool_put(&udf_dirhash_entry_pool, dirh_e); 3903 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 3904 } 3905 } 3906 pool_put(&udf_dirhash_pool, dirh); 3907 dir_node->dir_hash = NULL; 3908 } 3909 3910 3911 static void 3912 udf_dirhash_enter(struct udf_node *dir_node, struct fileid_desc *fid, 3913 struct dirent *dirent, uint64_t offset, uint32_t fid_size, int new) 3914 { 3915 struct udf_dirhash *dirh; 3916 struct udf_dirhash_entry *dirh_e; 3917 uint32_t hashvalue, hashline; 3918 3919 /* make sure we have a dirhash to add to; might be a fresh dir */ 3920 udf_dirhash_init(dir_node); 3921 dirh = dir_node->dir_hash; 3922 3923 /* finished build? */ 3924 if (!new && (dir_node->i_flags & IN_DIRHASH_COMPLETE)) 3925 return; 3926 3927 /* calculate our hash */ 3928 hashvalue = udf_dirhash_hash(dirent->d_name, dirent->d_namlen); 3929 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 3930 3931 /* lookup and insert entry if not there yet */ 3932 LIST_FOREACH(dirh_e, &dirh->entries[hashline], next) { 3933 /* check for hash collision */ 3934 if (dirh_e->hashvalue != hashvalue) 3935 continue; 3936 if (dirh_e->offset != offset) 3937 continue; 3938 /* got it already */ 3939 KASSERT(dirh_e->d_namlen == dirent->d_namlen); 3940 KASSERT(dirh_e->fid_size == fid_size); 3941 return; 3942 } 3943 3944 DPRINTF(DIRHASH, ("dirhash enter %"PRIu64", %d, %d for `%*.*s`\n", 3945 offset, fid_size, dirent->d_namlen, 3946 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 3947 3948 /* check if entry is in free space list */ 3949 LIST_FOREACH(dirh_e, &dirh->free_entries, next) { 3950 if (dirh_e->offset == offset) { 3951 DPRINTF(DIRHASH, ("\tremoving free entry\n")); 3952 LIST_REMOVE(dirh_e, next); 3953 break; 3954 } 3955 } 3956 3957 /* add to the hashline */ 3958 dirh_e = pool_get(&udf_dirhash_entry_pool, PR_WAITOK); 3959 memset(dirh_e, 0, sizeof(struct udf_dirhash_entry)); 3960 3961 dirh_e->hashvalue = hashvalue; 3962 dirh_e->offset = offset; 3963 dirh_e->d_namlen = dirent->d_namlen; 3964 dirh_e->fid_size = fid_size; 3965 3966 LIST_INSERT_HEAD(&dirh->entries[hashline], dirh_e, next); 3967 } 3968 3969 3970 static void 3971 udf_dirhash_enter_freed(struct udf_node *dir_node, uint64_t offset, 3972 uint32_t fid_size) 3973 { 3974 struct udf_dirhash *dirh; 3975 struct udf_dirhash_entry *dirh_e; 3976 3977 /* make sure we have a dirhash to add to; might be a fresh dir */ 3978 udf_dirhash_init(dir_node); 3979 dirh = dir_node->dir_hash; 3980 KASSERT(dirh); 3981 3982 #ifdef DEBUG 3983 /* check for double entry of free space */ 3984 LIST_FOREACH(dirh_e, &dirh->free_entries, next) 3985 KASSERT(dirh_e->offset != offset); 3986 #endif 3987 3988 DPRINTF(DIRHASH, ("dirhash enter FREED %"PRIu64", %d\n", 3989 offset, fid_size)); 3990 dirh_e = pool_get(&udf_dirhash_entry_pool, PR_WAITOK); 3991 memset(dirh_e, 0, sizeof(struct udf_dirhash_entry)); 3992 3993 dirh_e->hashvalue = 0; /* not relevant */ 3994 dirh_e->offset = offset; 3995 dirh_e->d_namlen = 0; /* not relevant */ 3996 dirh_e->fid_size = fid_size; 3997 3998 /* XXX it might be preferable to append them at the tail */ 3999 LIST_INSERT_HEAD(&dirh->free_entries, dirh_e, next); 4000 } 4001 4002 4003 static void 4004 udf_dirhash_remove(struct udf_node *dir_node, struct dirent *dirent, 4005 uint64_t offset, uint32_t fid_size) 4006 { 4007 struct udf_dirhash *dirh; 4008 struct udf_dirhash_entry *dirh_e; 4009 uint32_t hashvalue, hashline; 4010 4011 DPRINTF(DIRHASH, ("dirhash remove %"PRIu64", %d for `%*.*s`\n", 4012 offset, fid_size, 4013 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4014 4015 /* make sure we have a dirhash to add to */ 4016 dirh = dir_node->dir_hash; 4017 KASSERT(dirh); 4018 4019 /* calculate our hash */ 4020 hashvalue = udf_dirhash_hash(dirent->d_name, dirent->d_namlen); 4021 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 4022 4023 /* lookup entry */ 4024 LIST_FOREACH(dirh_e, &dirh->entries[hashline], next) { 4025 /* check for hash collision */ 4026 if (dirh_e->hashvalue != hashvalue) 4027 continue; 4028 if (dirh_e->offset != offset) 4029 continue; 4030 4031 /* got it! */ 4032 KASSERT(dirh_e->d_namlen == dirent->d_namlen); 4033 KASSERT(dirh_e->fid_size == fid_size); 4034 LIST_REMOVE(dirh_e, next); 4035 4036 udf_dirhash_enter_freed(dir_node, offset, fid_size); 4037 return; 4038 } 4039 4040 /* not found! */ 4041 panic("dirhash_remove couldn't find entry in hash table\n"); 4042 } 4043 4044 4045 /* BUGALERT: don't use result longer than needed, never past the node lock */ 4046 /* call with NULL *result initially and it will return nonzero if again */ 4047 static int 4048 udf_dirhash_lookup(struct udf_node *dir_node, const char *d_name, int d_namlen, 4049 struct udf_dirhash_entry **result) 4050 { 4051 struct udf_dirhash *dirh; 4052 struct udf_dirhash_entry *dirh_e; 4053 uint32_t hashvalue, hashline; 4054 4055 KASSERT(VOP_ISLOCKED(dir_node->vnode)); 4056 4057 /* make sure we have a dirhash to look into */ 4058 dirh = dir_node->dir_hash; 4059 KASSERT(dirh); 4060 4061 /* start where we were */ 4062 if (*result) { 4063 KASSERT(dir_node->dir_hash); 4064 dirh_e = *result; 4065 4066 /* retrieve information to avoid recalculation and advance */ 4067 hashvalue = dirh_e->hashvalue; 4068 dirh_e = LIST_NEXT(*result, next); 4069 } else { 4070 /* calculate our hash and lookup all entries in hashline */ 4071 hashvalue = udf_dirhash_hash(d_name, d_namlen); 4072 hashline = hashvalue & UDF_DIRHASH_HASHMASK; 4073 dirh_e = LIST_FIRST(&dirh->entries[hashline]); 4074 } 4075 4076 for (; dirh_e; dirh_e = LIST_NEXT(dirh_e, next)) { 4077 /* check for hash collision */ 4078 if (dirh_e->hashvalue != hashvalue) 4079 continue; 4080 if (dirh_e->d_namlen != d_namlen) 4081 continue; 4082 /* might have an entry in the cache */ 4083 *result = dirh_e; 4084 return 1; 4085 } 4086 4087 *result = NULL; 4088 return 0; 4089 } 4090 4091 4092 /* BUGALERT: don't use result longer than needed, never past the node lock */ 4093 /* call with NULL *result initially and it will return nonzero if again */ 4094 static int 4095 udf_dirhash_lookup_freed(struct udf_node *dir_node, uint32_t min_fidsize, 4096 struct udf_dirhash_entry **result) 4097 { 4098 struct udf_dirhash *dirh; 4099 struct udf_dirhash_entry *dirh_e; 4100 4101 KASSERT(VOP_ISLOCKED(dir_node->vnode)); 4102 4103 /* make sure we have a dirhash to look into */ 4104 udf_dirhash_init(dir_node); 4105 dirh = dir_node->dir_hash; 4106 4107 /* start where we were */ 4108 if (*result) { 4109 KASSERT(dir_node->dir_hash); 4110 dirh_e = LIST_NEXT(*result, next); 4111 } else { 4112 /* lookup all entries that match */ 4113 dirh_e = LIST_FIRST(&dirh->free_entries); 4114 } 4115 4116 for (; dirh_e; dirh_e = LIST_NEXT(dirh_e, next)) { 4117 /* check for minimum size */ 4118 if (dirh_e->fid_size < min_fidsize) 4119 continue; 4120 /* might be a candidate */ 4121 *result = dirh_e; 4122 return 1; 4123 } 4124 4125 *result = NULL; 4126 return 0; 4127 } 4128 4129 4130 static int 4131 udf_dirhash_fill(struct udf_node *dir_node) 4132 { 4133 struct vnode *dvp = dir_node->vnode; 4134 struct udf_dirhash *dirh; 4135 struct file_entry *fe = dir_node->fe; 4136 struct extfile_entry *efe = dir_node->efe; 4137 struct fileid_desc *fid; 4138 struct dirent *dirent; 4139 uint64_t file_size, pre_diroffset, diroffset; 4140 uint32_t lb_size; 4141 int error; 4142 4143 /* already filled/read in? */ 4144 if (dir_node->i_flags & IN_DIRHASH_BROKEN) 4145 return EIO; 4146 if (dir_node->i_flags & IN_DIRHASH_COMPLETE) 4147 return 0; 4148 4149 /* make sure we have a dirhash to add to */ 4150 udf_dirhash_init(dir_node); 4151 dirh = dir_node->dir_hash; 4152 KASSERT(dirh); 4153 4154 /* get directory filesize */ 4155 if (fe) { 4156 file_size = udf_rw64(fe->inf_len); 4157 } else { 4158 assert(efe); 4159 file_size = udf_rw64(efe->inf_len); 4160 } 4161 4162 /* allocate temporary space for fid */ 4163 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4164 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4165 4166 /* allocate temporary space for dirent */ 4167 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4168 4169 error = 0; 4170 diroffset = 0; 4171 while (diroffset < file_size) { 4172 /* transfer a new fid/dirent */ 4173 pre_diroffset = diroffset; 4174 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4175 if (error) { 4176 /* TODO what to do? continue but not add? */ 4177 dir_node->i_flags |= IN_DIRHASH_BROKEN; 4178 break; 4179 } 4180 4181 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4182 /* register deleted extent for reuse */ 4183 udf_dirhash_enter_freed(dir_node, pre_diroffset, 4184 udf_fidsize(fid)); 4185 } else { 4186 /* append to the dirhash */ 4187 udf_dirhash_enter(dir_node, fid, dirent, pre_diroffset, 4188 udf_fidsize(fid), 0); 4189 } 4190 } 4191 dir_node->i_flags |= IN_DIRHASH_COMPLETE; 4192 4193 free(fid, M_UDFTEMP); 4194 free(dirent, M_UDFTEMP); 4195 4196 return error; 4197 } 4198 4199 4200 /* --------------------------------------------------------------------- */ 4201 4202 /* 4203 * Directory read and manipulation functions. 4204 * 4205 * Note that if the file is found, the cached diroffset position *before* the 4206 * advance is remembered. Thus if the same filename is lookup again just after 4207 * this lookup its immediately found. 4208 */ 4209 4210 int 4211 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4212 struct long_ad *icb_loc, int *found) 4213 { 4214 struct udf_node *dir_node = VTOI(vp); 4215 struct udf_dirhash_entry *dirh_ep; 4216 struct fileid_desc *fid; 4217 struct dirent *dirent; 4218 uint64_t diroffset; 4219 uint32_t lb_size; 4220 int hit, error; 4221 4222 /* set default return */ 4223 *found = 0; 4224 4225 /* fillup with complete dir readin if needed */ 4226 error = udf_dirhash_fill(dir_node); 4227 if (error) 4228 return error; 4229 4230 /* allocate temporary space for fid */ 4231 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4232 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4233 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4234 4235 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4236 namelen, namelen, name)); 4237 4238 /* search our dirhash hits */ 4239 memset(icb_loc, 0, sizeof(*icb_loc)); 4240 dirh_ep = NULL; 4241 for (;;) { 4242 hit = udf_dirhash_lookup(dir_node, name, namelen, &dirh_ep); 4243 /* if no hit, abort the search */ 4244 if (!hit) 4245 break; 4246 4247 /* check this hit */ 4248 diroffset = dirh_ep->offset; 4249 4250 /* transfer a new fid/dirent */ 4251 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4252 if (error) 4253 break; 4254 4255 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4256 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4257 4258 /* see if its our entry */ 4259 KASSERT(dirent->d_namlen == namelen); 4260 if (strncmp(dirent->d_name, name, namelen) == 0) { 4261 *found = 1; 4262 *icb_loc = fid->icb; 4263 break; 4264 } 4265 } 4266 free(fid, M_UDFTEMP); 4267 free(dirent, M_UDFTEMP); 4268 4269 return error; 4270 } 4271 4272 /* --------------------------------------------------------------------- */ 4273 4274 static int 4275 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4276 struct long_ad *node_icb, struct long_ad *parent_icb, 4277 uint64_t parent_unique_id) 4278 { 4279 struct timespec now; 4280 struct icb_tag *icb; 4281 struct filetimes_extattr_entry *ft_extattr; 4282 uint64_t unique_id; 4283 uint32_t fidsize, lb_num; 4284 uint8_t *bpos; 4285 int crclen, attrlen; 4286 4287 lb_num = udf_rw32(node_icb->loc.lb_num); 4288 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4289 icb = &fe->icbtag; 4290 4291 /* 4292 * Always use strategy type 4 unless on WORM wich we don't support 4293 * (yet). Fill in defaults and set for internal allocation of data. 4294 */ 4295 icb->strat_type = udf_rw16(4); 4296 icb->max_num_entries = udf_rw16(1); 4297 icb->file_type = file_type; /* 8 bit */ 4298 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4299 4300 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4301 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4302 4303 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4304 4305 vfs_timestamp(&now); 4306 udf_timespec_to_timestamp(&now, &fe->atime); 4307 udf_timespec_to_timestamp(&now, &fe->attrtime); 4308 udf_timespec_to_timestamp(&now, &fe->mtime); 4309 4310 udf_set_regid(&fe->imp_id, IMPL_NAME); 4311 udf_add_impl_regid(ump, &fe->imp_id); 4312 4313 unique_id = udf_advance_uniqueid(ump); 4314 fe->unique_id = udf_rw64(unique_id); 4315 fe->l_ea = udf_rw32(0); 4316 4317 /* create extended attribute to record our creation time */ 4318 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4319 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4320 memset(ft_extattr, 0, attrlen); 4321 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4322 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4323 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4324 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4325 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4326 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4327 4328 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4329 (struct extattr_entry *) ft_extattr); 4330 free(ft_extattr, M_UDFTEMP); 4331 4332 /* if its a directory, create '..' */ 4333 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4334 fidsize = 0; 4335 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4336 fidsize = udf_create_parentfid(ump, 4337 (struct fileid_desc *) bpos, parent_icb, 4338 parent_unique_id); 4339 } 4340 4341 /* record fidlength information */ 4342 fe->inf_len = udf_rw64(fidsize); 4343 fe->l_ad = udf_rw32(fidsize); 4344 fe->logblks_rec = udf_rw64(0); /* intern */ 4345 4346 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4347 crclen += udf_rw32(fe->l_ea) + fidsize; 4348 fe->tag.desc_crc_len = udf_rw16(crclen); 4349 4350 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4351 4352 return fidsize; 4353 } 4354 4355 /* --------------------------------------------------------------------- */ 4356 4357 static int 4358 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4359 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4360 uint64_t parent_unique_id) 4361 { 4362 struct timespec now; 4363 struct icb_tag *icb; 4364 uint64_t unique_id; 4365 uint32_t fidsize, lb_num; 4366 uint8_t *bpos; 4367 int crclen; 4368 4369 lb_num = udf_rw32(node_icb->loc.lb_num); 4370 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4371 icb = &efe->icbtag; 4372 4373 /* 4374 * Always use strategy type 4 unless on WORM wich we don't support 4375 * (yet). Fill in defaults and set for internal allocation of data. 4376 */ 4377 icb->strat_type = udf_rw16(4); 4378 icb->max_num_entries = udf_rw16(1); 4379 icb->file_type = file_type; /* 8 bit */ 4380 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4381 4382 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4383 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4384 4385 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4386 4387 vfs_timestamp(&now); 4388 udf_timespec_to_timestamp(&now, &efe->ctime); 4389 udf_timespec_to_timestamp(&now, &efe->atime); 4390 udf_timespec_to_timestamp(&now, &efe->attrtime); 4391 udf_timespec_to_timestamp(&now, &efe->mtime); 4392 4393 udf_set_regid(&efe->imp_id, IMPL_NAME); 4394 udf_add_impl_regid(ump, &efe->imp_id); 4395 4396 unique_id = udf_advance_uniqueid(ump); 4397 efe->unique_id = udf_rw64(unique_id); 4398 efe->l_ea = udf_rw32(0); 4399 4400 /* if its a directory, create '..' */ 4401 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4402 fidsize = 0; 4403 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4404 fidsize = udf_create_parentfid(ump, 4405 (struct fileid_desc *) bpos, parent_icb, 4406 parent_unique_id); 4407 } 4408 4409 /* record fidlength information */ 4410 efe->obj_size = udf_rw64(fidsize); 4411 efe->inf_len = udf_rw64(fidsize); 4412 efe->l_ad = udf_rw32(fidsize); 4413 efe->logblks_rec = udf_rw64(0); /* intern */ 4414 4415 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4416 crclen += udf_rw32(efe->l_ea) + fidsize; 4417 efe->tag.desc_crc_len = udf_rw16(crclen); 4418 4419 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4420 4421 return fidsize; 4422 } 4423 4424 /* --------------------------------------------------------------------- */ 4425 4426 int 4427 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4428 struct udf_node *udf_node, struct componentname *cnp) 4429 { 4430 struct vnode *dvp = dir_node->vnode; 4431 struct udf_dirhash_entry *dirh_ep; 4432 struct file_entry *fe = dir_node->fe; 4433 struct extfile_entry *efe = dir_node->efe; 4434 struct fileid_desc *fid; 4435 struct dirent *dirent; 4436 uint64_t file_size, diroffset; 4437 uint32_t lb_size, fidsize; 4438 int found, error; 4439 char const *name = cnp->cn_nameptr; 4440 int namelen = cnp->cn_namelen; 4441 int hit, refcnt; 4442 4443 /* get directory filesize */ 4444 if (fe) { 4445 file_size = udf_rw64(fe->inf_len); 4446 } else { 4447 assert(efe); 4448 file_size = udf_rw64(efe->inf_len); 4449 } 4450 4451 /* allocate temporary space for fid */ 4452 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4453 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4454 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4455 4456 /* search our dirhash hits */ 4457 found = 0; 4458 dirh_ep = NULL; 4459 for (;;) { 4460 hit = udf_dirhash_lookup(dir_node, name, namelen, &dirh_ep); 4461 /* if no hit, abort the search */ 4462 if (!hit) 4463 break; 4464 4465 /* check this hit */ 4466 diroffset = dirh_ep->offset; 4467 4468 /* transfer a new fid/dirent */ 4469 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4470 if (error) 4471 break; 4472 4473 /* see if its our entry */ 4474 KASSERT(dirent->d_namlen == namelen); 4475 if (strncmp(dirent->d_name, name, namelen) == 0) { 4476 found = 1; 4477 break; 4478 } 4479 } 4480 4481 if (!found) 4482 error = ENOENT; 4483 if (error) 4484 goto error_out; 4485 4486 /* mark deleted */ 4487 fid->file_char |= UDF_FILE_CHAR_DEL; 4488 #ifdef UDF_COMPLETE_DELETE 4489 memset(&fid->icb, 0, sizeof(fid->icb)); 4490 #endif 4491 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4492 4493 /* get size of fid and compensate for the read_fid_stream advance */ 4494 fidsize = udf_fidsize(fid); 4495 diroffset -= fidsize; 4496 4497 /* write out */ 4498 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4499 fid, fidsize, diroffset, 4500 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4501 FSCRED, NULL, NULL); 4502 if (error) 4503 goto error_out; 4504 4505 /* get reference count of attached node */ 4506 if (udf_node->fe) { 4507 refcnt = udf_rw16(udf_node->fe->link_cnt); 4508 } else { 4509 KASSERT(udf_node->efe); 4510 refcnt = udf_rw16(udf_node->efe->link_cnt); 4511 } 4512 #ifdef UDF_COMPLETE_DELETE 4513 /* substract reference counter in attached node */ 4514 refcnt -= 1; 4515 if (udf_node->fe) { 4516 udf_node->fe->link_cnt = udf_rw16(refcnt); 4517 } else { 4518 udf_node->efe->link_cnt = udf_rw16(refcnt); 4519 } 4520 4521 /* prevent writeout when refcnt == 0 */ 4522 if (refcnt == 0) 4523 udf_node->i_flags |= IN_DELETED; 4524 4525 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4526 int drefcnt; 4527 4528 /* substract reference counter in directory node */ 4529 /* note subtract 2 (?) for its was also backreferenced */ 4530 if (dir_node->fe) { 4531 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4532 drefcnt -= 1; 4533 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4534 } else { 4535 KASSERT(dir_node->efe); 4536 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4537 drefcnt -= 1; 4538 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4539 } 4540 } 4541 4542 udf_node->i_flags |= IN_MODIFIED; 4543 dir_node->i_flags |= IN_MODIFIED; 4544 #endif 4545 /* if it is/was a hardlink adjust the file count */ 4546 if (refcnt > 0) 4547 udf_adjust_filecount(udf_node, -1); 4548 4549 /* remove from the dirhash */ 4550 udf_dirhash_remove(dir_node, dirent, diroffset, 4551 udf_fidsize(fid)); 4552 4553 error_out: 4554 free(fid, M_UDFTEMP); 4555 free(dirent, M_UDFTEMP); 4556 4557 return error; 4558 } 4559 4560 /* --------------------------------------------------------------------- */ 4561 4562 /* 4563 * We are not allowed to split the fid tag itself over an logical block so 4564 * check the space remaining in the logical block. 4565 * 4566 * We try to select the smallest candidate for recycling or when none is 4567 * found, append a new one at the end of the directory. 4568 */ 4569 4570 int 4571 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 4572 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 4573 { 4574 struct vnode *dvp = dir_node->vnode; 4575 struct udf_dirhash_entry *dirh_ep; 4576 struct fileid_desc *fid; 4577 struct icb_tag *icbtag; 4578 struct charspec osta_charspec; 4579 struct dirent dirent; 4580 uint64_t unique_id, dir_size, diroffset; 4581 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 4582 uint32_t chosen_size, chosen_size_diff; 4583 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 4584 int file_char, refcnt, icbflags, addr_type, hit, error; 4585 4586 lb_size = udf_rw32(ump->logical_vol->lb_size); 4587 udf_osta_charset(&osta_charspec); 4588 4589 if (dir_node->fe) { 4590 dir_size = udf_rw64(dir_node->fe->inf_len); 4591 icbtag = &dir_node->fe->icbtag; 4592 } else { 4593 dir_size = udf_rw64(dir_node->efe->inf_len); 4594 icbtag = &dir_node->efe->icbtag; 4595 } 4596 4597 icbflags = udf_rw16(icbtag->flags); 4598 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4599 4600 if (udf_node->fe) { 4601 unique_id = udf_rw64(udf_node->fe->unique_id); 4602 refcnt = udf_rw16(udf_node->fe->link_cnt); 4603 } else { 4604 unique_id = udf_rw64(udf_node->efe->unique_id); 4605 refcnt = udf_rw16(udf_node->efe->link_cnt); 4606 } 4607 4608 if (refcnt > 0) { 4609 unique_id = udf_advance_uniqueid(ump); 4610 udf_adjust_filecount(udf_node, 1); 4611 } 4612 4613 /* determine file characteristics */ 4614 file_char = 0; /* visible non deleted file and not stream metadata */ 4615 if (vap->va_type == VDIR) 4616 file_char = UDF_FILE_CHAR_DIR; 4617 4618 /* malloc scrap buffer */ 4619 fid = malloc(lb_size, M_TEMP, M_WAITOK); 4620 bzero(fid, lb_size); 4621 4622 /* calculate _minimum_ fid size */ 4623 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4624 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4625 fidsize = UDF_FID_SIZE + fid->l_fi; 4626 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 4627 4628 /* find position that will fit the FID */ 4629 chosen_fid_pos = dir_size; 4630 chosen_size = 0; 4631 chosen_size_diff = UINT_MAX; 4632 4633 /* shut up gcc */ 4634 dirent.d_namlen = 0; 4635 4636 /* search our dirhash hits */ 4637 error = 0; 4638 dirh_ep = NULL; 4639 for (;;) { 4640 hit = udf_dirhash_lookup_freed(dir_node, fidsize, &dirh_ep); 4641 /* if no hit, abort the search */ 4642 if (!hit) 4643 break; 4644 4645 /* check this hit for size */ 4646 this_fidsize = dirh_ep->fid_size; 4647 4648 /* check this hit */ 4649 fid_pos = dirh_ep->offset; 4650 end_fid_pos = fid_pos + this_fidsize; 4651 size_diff = this_fidsize - fidsize; 4652 lb_rest = lb_size - (end_fid_pos % lb_size); 4653 4654 #ifndef UDF_COMPLETE_DELETE 4655 /* transfer a new fid/dirent */ 4656 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 4657 if (error) 4658 goto error_out; 4659 4660 /* only reuse entries that are wiped */ 4661 /* check if the len + loc are marked zero */ 4662 if (udf_rw32(fid->icb.len != 0)) 4663 continue; 4664 if (udf_rw32(fid->icb.loc.lb_num) != 0) 4665 continue; 4666 if (udf_rw16(fid->icb.loc.part_num != 0)) 4667 continue; 4668 #endif /* UDF_COMPLETE_DELETE */ 4669 4670 /* select if not splitting the tag and its smaller */ 4671 if ((size_diff >= 0) && 4672 (size_diff < chosen_size_diff) && 4673 (lb_rest >= sizeof(struct desc_tag))) 4674 { 4675 /* UDF 2.3.4.2+3 specifies rules for iu size */ 4676 if ((size_diff == 0) || (size_diff >= 32)) { 4677 chosen_fid_pos = fid_pos; 4678 chosen_size = this_fidsize; 4679 chosen_size_diff = size_diff; 4680 } 4681 } 4682 } 4683 4684 4685 /* extend directory if no other candidate found */ 4686 if (chosen_size == 0) { 4687 chosen_fid_pos = dir_size; 4688 chosen_size = fidsize; 4689 chosen_size_diff = 0; 4690 4691 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 4692 if (addr_type == UDF_ICB_INTERN_ALLOC) { 4693 /* pre-grow directory to see if we're to switch */ 4694 udf_grow_node(dir_node, dir_size + chosen_size); 4695 4696 icbflags = udf_rw16(icbtag->flags); 4697 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 4698 } 4699 4700 /* make sure the next fid desc_tag won't be splitted */ 4701 if (addr_type != UDF_ICB_INTERN_ALLOC) { 4702 end_fid_pos = chosen_fid_pos + chosen_size; 4703 lb_rest = lb_size - (end_fid_pos % lb_size); 4704 4705 /* pad with implementation use regid if needed */ 4706 if (lb_rest < sizeof(struct desc_tag)) 4707 chosen_size += 32; 4708 } 4709 } 4710 chosen_size_diff = chosen_size - fidsize; 4711 diroffset = chosen_fid_pos + chosen_size; 4712 4713 /* populate the FID */ 4714 memset(fid, 0, lb_size); 4715 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 4716 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 4717 fid->file_char = file_char; 4718 fid->icb = udf_node->loc; 4719 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 4720 fid->l_iu = udf_rw16(0); 4721 4722 if (chosen_size > fidsize) { 4723 /* insert implementation-use regid to space it correctly */ 4724 fid->l_iu = udf_rw16(chosen_size_diff); 4725 4726 /* set implementation use */ 4727 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 4728 udf_add_impl_regid(ump, (struct regid *) fid->data); 4729 } 4730 4731 /* fill in name */ 4732 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 4733 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4734 4735 fid->tag.desc_crc_len = chosen_size - UDF_DESC_TAG_LENGTH; 4736 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4737 4738 /* writeout FID/update parent directory */ 4739 error = vn_rdwr(UIO_WRITE, dvp, 4740 fid, chosen_size, chosen_fid_pos, 4741 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4742 FSCRED, NULL, NULL); 4743 4744 if (error) 4745 goto error_out; 4746 4747 /* add reference counter in attached node */ 4748 if (udf_node->fe) { 4749 refcnt = udf_rw16(udf_node->fe->link_cnt); 4750 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 4751 } else { 4752 KASSERT(udf_node->efe); 4753 refcnt = udf_rw16(udf_node->efe->link_cnt); 4754 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 4755 } 4756 4757 /* mark not deleted if it was... just in case, but do warn */ 4758 if (udf_node->i_flags & IN_DELETED) { 4759 printf("udf: warning, marking a file undeleted\n"); 4760 udf_node->i_flags &= ~IN_DELETED; 4761 } 4762 4763 if (file_char & UDF_FILE_CHAR_DIR) { 4764 /* add reference counter in directory node for '..' */ 4765 if (dir_node->fe) { 4766 refcnt = udf_rw16(dir_node->fe->link_cnt); 4767 refcnt++; 4768 dir_node->fe->link_cnt = udf_rw16(refcnt); 4769 } else { 4770 KASSERT(dir_node->efe); 4771 refcnt = udf_rw16(dir_node->efe->link_cnt); 4772 refcnt++; 4773 dir_node->efe->link_cnt = udf_rw16(refcnt); 4774 } 4775 } 4776 4777 /* append to the dirhash */ 4778 dirent.d_namlen = cnp->cn_namelen; 4779 memcpy(dirent.d_name, cnp->cn_nameptr, cnp->cn_namelen); 4780 udf_dirhash_enter(dir_node, fid, &dirent, chosen_fid_pos, 4781 udf_fidsize(fid), 1); 4782 4783 /* note updates */ 4784 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 4785 /* VN_KNOTE(udf_node, ...) */ 4786 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 4787 4788 error_out: 4789 free(fid, M_TEMP); 4790 4791 return error; 4792 } 4793 4794 /* --------------------------------------------------------------------- */ 4795 4796 /* 4797 * Each node can have an attached streamdir node though not recursively. These 4798 * are otherwise known as named substreams/named extended attributes that have 4799 * no size limitations. 4800 * 4801 * `Normal' extended attributes are indicated with a number and are recorded 4802 * in either the fe/efe descriptor itself for small descriptors or recorded in 4803 * the attached extended attribute file. Since these spaces can get 4804 * fragmented, care ought to be taken. 4805 * 4806 * Since the size of the space reserved for allocation descriptors is limited, 4807 * there is a mechanim provided for extending this space; this is done by a 4808 * special extent to allow schrinking of the allocations without breaking the 4809 * linkage to the allocation extent descriptor. 4810 */ 4811 4812 int 4813 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 4814 struct udf_node **udf_noderes) 4815 { 4816 union dscrptr *dscr; 4817 struct udf_node *udf_node; 4818 struct vnode *nvp; 4819 struct long_ad icb_loc, last_fe_icb_loc; 4820 uint64_t file_size; 4821 uint32_t lb_size, sector, dummy; 4822 uint8_t *file_data; 4823 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 4824 int slot, eof, error; 4825 4826 DPRINTF(NODE, ("udf_get_node called\n")); 4827 *udf_noderes = udf_node = NULL; 4828 4829 /* lock to disallow simultanious creation of same udf_node */ 4830 mutex_enter(&ump->get_node_lock); 4831 4832 DPRINTF(NODE, ("\tlookup in hash table\n")); 4833 /* lookup in hash table */ 4834 assert(ump); 4835 assert(node_icb_loc); 4836 udf_node = udf_hash_lookup(ump, node_icb_loc); 4837 if (udf_node) { 4838 DPRINTF(NODE, ("\tgot it from the hash!\n")); 4839 /* vnode is returned locked */ 4840 *udf_noderes = udf_node; 4841 mutex_exit(&ump->get_node_lock); 4842 return 0; 4843 } 4844 4845 /* garbage check: translate udf_node_icb_loc to sectornr */ 4846 error = udf_translate_vtop(ump, node_icb_loc, §or, &dummy); 4847 if (error) { 4848 /* no use, this will fail anyway */ 4849 mutex_exit(&ump->get_node_lock); 4850 return EINVAL; 4851 } 4852 4853 /* build udf_node (do initialise!) */ 4854 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 4855 memset(udf_node, 0, sizeof(struct udf_node)); 4856 4857 DPRINTF(NODE, ("\tget new vnode\n")); 4858 /* give it a vnode */ 4859 error = getnewvnode(VT_UDF, ump->vfs_mountp, udf_vnodeop_p, &nvp); 4860 if (error) { 4861 pool_put(&udf_node_pool, udf_node); 4862 mutex_exit(&ump->get_node_lock); 4863 return error; 4864 } 4865 4866 /* always return locked vnode */ 4867 if ((error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY))) { 4868 /* recycle vnode and unlock; simultanious will fail too */ 4869 ungetnewvnode(nvp); 4870 mutex_exit(&ump->get_node_lock); 4871 return error; 4872 } 4873 4874 /* initialise crosslinks, note location of fe/efe for hashing */ 4875 udf_node->ump = ump; 4876 udf_node->vnode = nvp; 4877 nvp->v_data = udf_node; 4878 udf_node->loc = *node_icb_loc; 4879 udf_node->lockf = 0; 4880 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 4881 cv_init(&udf_node->node_lock, "udf_nlk"); 4882 genfs_node_init(nvp, &udf_genfsops); /* inititise genfs */ 4883 udf_node->outstanding_bufs = 0; 4884 udf_node->outstanding_nodedscr = 0; 4885 4886 /* insert into the hash lookup */ 4887 udf_register_node(udf_node); 4888 4889 /* safe to unlock, the entry is in the hash table, vnode is locked */ 4890 mutex_exit(&ump->get_node_lock); 4891 4892 icb_loc = *node_icb_loc; 4893 needs_indirect = 0; 4894 strat4096 = 0; 4895 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 4896 file_size = 0; 4897 file_data = NULL; 4898 lb_size = udf_rw32(ump->logical_vol->lb_size); 4899 4900 DPRINTF(NODE, ("\tstart reading descriptors\n")); 4901 do { 4902 /* try to read in fe/efe */ 4903 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 4904 4905 /* blank sector marks end of sequence, check this */ 4906 if ((dscr == NULL) && (!strat4096)) 4907 error = ENOENT; 4908 4909 /* break if read error or blank sector */ 4910 if (error || (dscr == NULL)) 4911 break; 4912 4913 /* process descriptor based on the descriptor type */ 4914 dscr_type = udf_rw16(dscr->tag.id); 4915 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 4916 4917 /* if dealing with an indirect entry, follow the link */ 4918 if (dscr_type == TAGID_INDIRECTENTRY) { 4919 needs_indirect = 0; 4920 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4921 icb_loc = dscr->inde.indirect_icb; 4922 continue; 4923 } 4924 4925 /* only file entries and extended file entries allowed here */ 4926 if ((dscr_type != TAGID_FENTRY) && 4927 (dscr_type != TAGID_EXTFENTRY)) { 4928 udf_free_logvol_dscr(ump, &icb_loc, dscr); 4929 error = ENOENT; 4930 break; 4931 } 4932 4933 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 4934 4935 /* choose this one */ 4936 last_fe_icb_loc = icb_loc; 4937 4938 /* record and process/update (ext)fentry */ 4939 file_data = NULL; 4940 if (dscr_type == TAGID_FENTRY) { 4941 if (udf_node->fe) 4942 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4943 udf_node->fe); 4944 udf_node->fe = &dscr->fe; 4945 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 4946 udf_file_type = udf_node->fe->icbtag.file_type; 4947 file_size = udf_rw64(udf_node->fe->inf_len); 4948 file_data = udf_node->fe->data; 4949 } else { 4950 if (udf_node->efe) 4951 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 4952 udf_node->efe); 4953 udf_node->efe = &dscr->efe; 4954 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 4955 udf_file_type = udf_node->efe->icbtag.file_type; 4956 file_size = udf_rw64(udf_node->efe->inf_len); 4957 file_data = udf_node->efe->data; 4958 } 4959 4960 /* check recording strategy (structure) */ 4961 4962 /* 4963 * Strategy 4096 is a daisy linked chain terminating with an 4964 * unrecorded sector or a TERM descriptor. The next 4965 * descriptor is to be found in the sector that follows the 4966 * current sector. 4967 */ 4968 if (strat == 4096) { 4969 strat4096 = 1; 4970 needs_indirect = 1; 4971 4972 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 4973 } 4974 4975 /* 4976 * Strategy 4 is the normal strategy and terminates, but if 4977 * we're in strategy 4096, we can't have strategy 4 mixed in 4978 */ 4979 4980 if (strat == 4) { 4981 if (strat4096) { 4982 error = EINVAL; 4983 break; 4984 } 4985 break; /* done */ 4986 } 4987 } while (!error); 4988 4989 /* first round of cleanup code */ 4990 if (error) { 4991 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 4992 /* recycle udf_node */ 4993 udf_dispose_node(udf_node); 4994 4995 vlockmgr(nvp->v_vnlock, LK_RELEASE); 4996 nvp->v_data = NULL; 4997 ungetnewvnode(nvp); 4998 4999 return EINVAL; /* error code ok? */ 5000 } 5001 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 5002 5003 /* assert no references to dscr anymore beyong this point */ 5004 assert((udf_node->fe) || (udf_node->efe)); 5005 dscr = NULL; 5006 5007 /* 5008 * Remember where to record an updated version of the descriptor. If 5009 * there is a sequence of indirect entries, icb_loc will have been 5010 * updated. Its the write disipline to allocate new space and to make 5011 * sure the chain is maintained. 5012 * 5013 * `needs_indirect' flags if the next location is to be filled with 5014 * with an indirect entry. 5015 */ 5016 udf_node->write_loc = icb_loc; 5017 udf_node->needs_indirect = needs_indirect; 5018 5019 /* 5020 * Go trough all allocations extents of this descriptor and when 5021 * encountering a redirect read in the allocation extension. These are 5022 * daisy-chained. 5023 */ 5024 UDF_LOCK_NODE(udf_node, 0); 5025 udf_node->num_extensions = 0; 5026 5027 error = 0; 5028 slot = 0; 5029 for (;;) { 5030 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 5031 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 5032 "lb_num = %d, part = %d\n", slot, eof, 5033 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 5034 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 5035 udf_rw32(icb_loc.loc.lb_num), 5036 udf_rw16(icb_loc.loc.part_num))); 5037 if (eof) 5038 break; 5039 slot++; 5040 5041 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 5042 continue; 5043 5044 DPRINTF(NODE, ("\tgot redirect extent\n")); 5045 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 5046 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 5047 "too many allocation extensions on " 5048 "udf_node\n")); 5049 error = EINVAL; 5050 break; 5051 } 5052 5053 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 5054 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 5055 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 5056 "extension size in udf_node\n")); 5057 error = EINVAL; 5058 break; 5059 } 5060 5061 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 5062 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 5063 /* load in allocation extent */ 5064 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5065 if (error || (dscr == NULL)) 5066 break; 5067 5068 /* process read-in descriptor */ 5069 dscr_type = udf_rw16(dscr->tag.id); 5070 5071 if (dscr_type != TAGID_ALLOCEXTENT) { 5072 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5073 error = ENOENT; 5074 break; 5075 } 5076 5077 DPRINTF(NODE, ("\trecording redirect extent\n")); 5078 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5079 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5080 5081 udf_node->num_extensions++; 5082 5083 } /* while */ 5084 UDF_UNLOCK_NODE(udf_node, 0); 5085 5086 /* second round of cleanup code */ 5087 if (error) { 5088 /* recycle udf_node */ 5089 udf_dispose_node(udf_node); 5090 5091 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5092 nvp->v_data = NULL; 5093 ungetnewvnode(nvp); 5094 5095 return EINVAL; /* error code ok? */ 5096 } 5097 5098 DPRINTF(NODE, ("\tnode read in fine\n")); 5099 5100 /* 5101 * Translate UDF filetypes into vnode types. 5102 * 5103 * Systemfiles like the meta main and mirror files are not treated as 5104 * normal files, so we type them as having no type. UDF dictates that 5105 * they are not allowed to be visible. 5106 */ 5107 5108 switch (udf_file_type) { 5109 case UDF_ICB_FILETYPE_DIRECTORY : 5110 case UDF_ICB_FILETYPE_STREAMDIR : 5111 nvp->v_type = VDIR; 5112 break; 5113 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5114 nvp->v_type = VBLK; 5115 break; 5116 case UDF_ICB_FILETYPE_CHARDEVICE : 5117 nvp->v_type = VCHR; 5118 break; 5119 case UDF_ICB_FILETYPE_SOCKET : 5120 nvp->v_type = VSOCK; 5121 break; 5122 case UDF_ICB_FILETYPE_FIFO : 5123 nvp->v_type = VFIFO; 5124 break; 5125 case UDF_ICB_FILETYPE_SYMLINK : 5126 nvp->v_type = VLNK; 5127 break; 5128 case UDF_ICB_FILETYPE_VAT : 5129 case UDF_ICB_FILETYPE_META_MAIN : 5130 case UDF_ICB_FILETYPE_META_MIRROR : 5131 nvp->v_type = VNON; 5132 break; 5133 case UDF_ICB_FILETYPE_RANDOMACCESS : 5134 case UDF_ICB_FILETYPE_REALTIME : 5135 nvp->v_type = VREG; 5136 break; 5137 default: 5138 /* YIKES, something else */ 5139 nvp->v_type = VNON; 5140 } 5141 5142 /* TODO specfs, fifofs etc etc. vnops setting */ 5143 5144 /* don't forget to set vnode's v_size */ 5145 uvm_vnp_setsize(nvp, file_size); 5146 5147 /* TODO ext attr and streamdir udf_nodes */ 5148 5149 *udf_noderes = udf_node; 5150 5151 return 0; 5152 } 5153 5154 /* --------------------------------------------------------------------- */ 5155 5156 5157 int 5158 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5159 { 5160 union dscrptr *dscr; 5161 struct long_ad *loc; 5162 int extnr, flags, error; 5163 5164 DPRINTF(NODE, ("udf_writeout_node called\n")); 5165 5166 KASSERT(udf_node->outstanding_bufs == 0); 5167 KASSERT(udf_node->outstanding_nodedscr == 0); 5168 5169 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5170 5171 if (udf_node->i_flags & IN_DELETED) { 5172 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5173 return 0; 5174 } 5175 5176 /* lock node */ 5177 flags = waitfor ? 0 : IN_CALLBACK_ULK; 5178 UDF_LOCK_NODE(udf_node, flags); 5179 5180 /* at least one descriptor writeout */ 5181 udf_node->outstanding_nodedscr = 1; 5182 5183 /* we're going to write out the descriptor so clear the flags */ 5184 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5185 5186 /* if we were rebuild, write out the allocation extents */ 5187 if (udf_node->i_flags & IN_NODE_REBUILD) { 5188 /* mark outstanding node dscriptors and issue them */ 5189 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5190 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5191 loc = &udf_node->ext_loc[extnr]; 5192 dscr = (union dscrptr *) udf_node->ext[extnr]; 5193 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5194 if (error) 5195 return error; 5196 } 5197 /* mark allocation extents written out */ 5198 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5199 } 5200 5201 if (udf_node->fe) { 5202 dscr = (union dscrptr *) udf_node->fe; 5203 } else { 5204 KASSERT(udf_node->efe); 5205 dscr = (union dscrptr *) udf_node->efe; 5206 } 5207 KASSERT(dscr); 5208 5209 loc = &udf_node->write_loc; 5210 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5211 return error; 5212 } 5213 5214 /* --------------------------------------------------------------------- */ 5215 5216 int 5217 udf_dispose_node(struct udf_node *udf_node) 5218 { 5219 struct vnode *vp; 5220 int extnr; 5221 5222 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5223 if (!udf_node) { 5224 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5225 return 0; 5226 } 5227 5228 vp = udf_node->vnode; 5229 #ifdef DIAGNOSTIC 5230 if (vp->v_numoutput) 5231 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5232 "v_numoutput = %d", udf_node, vp->v_numoutput); 5233 #endif 5234 5235 /* wait until out of sync (just in case we happen to stumble over one */ 5236 KASSERT(!mutex_owned(&mntvnode_lock)); 5237 mutex_enter(&mntvnode_lock); 5238 while (udf_node->i_flags & IN_SYNCED) { 5239 cv_timedwait(&udf_node->ump->dirtynodes_cv, &mntvnode_lock, 5240 hz/16); 5241 } 5242 mutex_exit(&mntvnode_lock); 5243 5244 /* TODO extended attributes and streamdir */ 5245 5246 /* remove dirhash if present */ 5247 udf_dirhash_destroy(udf_node); 5248 5249 /* remove from our hash lookup table */ 5250 udf_deregister_node(udf_node); 5251 5252 /* destroy our lock */ 5253 mutex_destroy(&udf_node->node_mutex); 5254 cv_destroy(&udf_node->node_lock); 5255 5256 /* dissociate our udf_node from the vnode */ 5257 genfs_node_destroy(udf_node->vnode); 5258 vp->v_data = NULL; 5259 5260 /* free associated memory and the node itself */ 5261 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5262 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5263 udf_node->ext[extnr]); 5264 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5265 } 5266 5267 if (udf_node->fe) 5268 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5269 udf_node->fe); 5270 if (udf_node->efe) 5271 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5272 udf_node->efe); 5273 5274 udf_node->fe = (void *) 0xdeadaaaa; 5275 udf_node->efe = (void *) 0xdeadbbbb; 5276 udf_node->ump = (void *) 0xdeadbeef; 5277 pool_put(&udf_node_pool, udf_node); 5278 5279 return 0; 5280 } 5281 5282 5283 5284 /* 5285 * create a new node using the specified vnodeops, vap and cnp but with the 5286 * udf_file_type. This allows special files to be created. Use with care. 5287 */ 5288 5289 static int 5290 udf_create_node_raw(struct vnode *dvp, struct vnode **vpp, int udf_file_type, 5291 int (**vnodeops)(void *), struct vattr *vap, struct componentname *cnp) 5292 { 5293 union dscrptr *dscr; 5294 struct udf_node *dir_node = VTOI(dvp);; 5295 struct udf_node *udf_node; 5296 struct udf_mount *ump = dir_node->ump; 5297 struct vnode *nvp; 5298 struct long_ad node_icb_loc; 5299 uint64_t parent_unique_id; 5300 uint64_t lmapping, pmapping; 5301 uint32_t lb_size, lb_num; 5302 uint16_t vpart_num; 5303 uid_t uid; 5304 gid_t gid, parent_gid; 5305 int fid_size, error; 5306 5307 lb_size = udf_rw32(ump->logical_vol->lb_size); 5308 *vpp = NULL; 5309 5310 /* allocate vnode */ 5311 error = getnewvnode(VT_UDF, ump->vfs_mountp, vnodeops, &nvp); 5312 if (error) 5313 return error; 5314 5315 /* lock node */ 5316 error = vn_lock(nvp, LK_EXCLUSIVE | LK_RETRY); 5317 if (error) { 5318 nvp->v_data = NULL; 5319 ungetnewvnode(nvp); 5320 return error; 5321 } 5322 5323 /* get disc allocation for one logical block */ 5324 error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 5325 &vpart_num, &lmapping, &pmapping); 5326 lb_num = lmapping; 5327 if (error) { 5328 vlockmgr(nvp->v_vnlock, LK_RELEASE); 5329 ungetnewvnode(nvp); 5330 return error; 5331 } 5332 5333 /* initialise pointer to location */ 5334 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5335 node_icb_loc.len = lb_size; 5336 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5337 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5338 5339 /* build udf_node (do initialise!) */ 5340 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5341 memset(udf_node, 0, sizeof(struct udf_node)); 5342 5343 /* initialise crosslinks, note location of fe/efe for hashing */ 5344 /* bugalert: synchronise with udf_get_node() */ 5345 udf_node->ump = ump; 5346 udf_node->vnode = nvp; 5347 nvp->v_data = udf_node; 5348 udf_node->loc = node_icb_loc; 5349 udf_node->write_loc = node_icb_loc; 5350 udf_node->lockf = 0; 5351 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5352 cv_init(&udf_node->node_lock, "udf_nlk"); 5353 udf_node->outstanding_bufs = 0; 5354 udf_node->outstanding_nodedscr = 0; 5355 5356 /* initialise genfs */ 5357 genfs_node_init(nvp, &udf_genfsops); 5358 5359 /* insert into the hash lookup */ 5360 udf_register_node(udf_node); 5361 5362 /* get parent's unique ID for refering '..' if its a directory */ 5363 if (dir_node->fe) { 5364 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5365 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5366 } else { 5367 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5368 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5369 } 5370 5371 /* get descriptor */ 5372 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5373 5374 /* choose a fe or an efe for it */ 5375 if (ump->logical_vol->tag.descriptor_ver == 2) { 5376 udf_node->fe = &dscr->fe; 5377 fid_size = udf_create_new_fe(ump, udf_node->fe, 5378 udf_file_type, &udf_node->loc, 5379 &dir_node->loc, parent_unique_id); 5380 /* TODO add extended attribute for creation time */ 5381 } else { 5382 udf_node->efe = &dscr->efe; 5383 fid_size = udf_create_new_efe(ump, udf_node->efe, 5384 udf_file_type, &udf_node->loc, 5385 &dir_node->loc, parent_unique_id); 5386 } 5387 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5388 5389 /* update vnode's size and type */ 5390 nvp->v_type = vap->va_type; 5391 uvm_vnp_setsize(nvp, fid_size); 5392 5393 /* set access mode */ 5394 udf_setaccessmode(udf_node, vap->va_mode); 5395 5396 /* set ownership */ 5397 uid = kauth_cred_geteuid(cnp->cn_cred); 5398 gid = parent_gid; 5399 udf_setownership(udf_node, uid, gid); 5400 5401 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5402 if (error) { 5403 /* free disc allocation for node */ 5404 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5405 5406 /* recycle udf_node */ 5407 udf_dispose_node(udf_node); 5408 vput(nvp); 5409 5410 *vpp = NULL; 5411 return error; 5412 } 5413 5414 /* adjust file count */ 5415 udf_adjust_filecount(udf_node, 1); 5416 5417 /* return result */ 5418 *vpp = nvp; 5419 5420 return 0; 5421 } 5422 5423 5424 int 5425 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5426 struct componentname *cnp) 5427 { 5428 int (**vnodeops)(void *); 5429 int udf_file_type; 5430 5431 DPRINTF(NODE, ("udf_create_node called\n")); 5432 5433 /* what type are we creating ? */ 5434 vnodeops = udf_vnodeop_p; 5435 /* start with a default */ 5436 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5437 5438 *vpp = NULL; 5439 5440 switch (vap->va_type) { 5441 case VREG : 5442 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5443 break; 5444 case VDIR : 5445 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5446 break; 5447 case VLNK : 5448 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5449 break; 5450 case VBLK : 5451 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5452 /* specfs */ 5453 return ENOTSUP; 5454 break; 5455 case VCHR : 5456 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5457 /* specfs */ 5458 return ENOTSUP; 5459 break; 5460 case VFIFO : 5461 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5462 /* specfs */ 5463 return ENOTSUP; 5464 break; 5465 case VSOCK : 5466 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5467 /* specfs */ 5468 return ENOTSUP; 5469 break; 5470 case VNON : 5471 case VBAD : 5472 default : 5473 /* nothing; can we even create these? */ 5474 return EINVAL; 5475 } 5476 5477 return udf_create_node_raw(dvp, vpp, udf_file_type, vnodeops, vap, cnp); 5478 } 5479 5480 /* --------------------------------------------------------------------- */ 5481 5482 static void 5483 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5484 { 5485 struct udf_mount *ump = udf_node->ump; 5486 uint32_t lb_size, lb_num, len, num_lb; 5487 uint16_t vpart_num; 5488 5489 /* is there really one? */ 5490 if (mem == NULL) 5491 return; 5492 5493 /* got a descriptor here */ 5494 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5495 lb_num = udf_rw32(loc->loc.lb_num); 5496 vpart_num = udf_rw16(loc->loc.part_num); 5497 5498 lb_size = udf_rw32(ump->logical_vol->lb_size); 5499 num_lb = (len + lb_size -1) / lb_size; 5500 5501 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5502 } 5503 5504 void 5505 udf_delete_node(struct udf_node *udf_node) 5506 { 5507 void *dscr; 5508 struct udf_mount *ump; 5509 struct long_ad *loc; 5510 int extnr, lvint, dummy; 5511 5512 ump = udf_node->ump; 5513 5514 /* paranoia check on integrity; should be open!; we could panic */ 5515 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 5516 if (lvint == UDF_INTEGRITY_CLOSED) 5517 printf("\tIntegrity was CLOSED!\n"); 5518 5519 /* whatever the node type, change its size to zero */ 5520 (void) udf_resize_node(udf_node, 0, &dummy); 5521 5522 /* force it to be `clean'; no use writing it out */ 5523 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 5524 IN_CHANGE | IN_UPDATE | IN_MODIFY); 5525 5526 /* adjust file count */ 5527 udf_adjust_filecount(udf_node, -1); 5528 5529 /* 5530 * Free its allocated descriptors; memory will be released when 5531 * vop_reclaim() is called. 5532 */ 5533 loc = &udf_node->loc; 5534 5535 dscr = udf_node->fe; 5536 udf_free_descriptor_space(udf_node, loc, dscr); 5537 dscr = udf_node->efe; 5538 udf_free_descriptor_space(udf_node, loc, dscr); 5539 5540 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 5541 dscr = udf_node->ext[extnr]; 5542 loc = &udf_node->ext_loc[extnr]; 5543 udf_free_descriptor_space(udf_node, loc, dscr); 5544 } 5545 } 5546 5547 /* --------------------------------------------------------------------- */ 5548 5549 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 5550 int 5551 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 5552 { 5553 struct file_entry *fe = udf_node->fe; 5554 struct extfile_entry *efe = udf_node->efe; 5555 uint64_t file_size; 5556 int error; 5557 5558 if (fe) { 5559 file_size = udf_rw64(fe->inf_len); 5560 } else { 5561 assert(udf_node->efe); 5562 file_size = udf_rw64(efe->inf_len); 5563 } 5564 5565 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 5566 file_size, new_size)); 5567 5568 /* if not changing, we're done */ 5569 if (file_size == new_size) 5570 return 0; 5571 5572 *extended = (new_size > file_size); 5573 if (*extended) { 5574 error = udf_grow_node(udf_node, new_size); 5575 } else { 5576 error = udf_shrink_node(udf_node, new_size); 5577 } 5578 5579 return error; 5580 } 5581 5582 5583 /* --------------------------------------------------------------------- */ 5584 5585 void 5586 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 5587 struct timespec *mod, struct timespec *birth) 5588 { 5589 struct timespec now; 5590 struct file_entry *fe; 5591 struct extfile_entry *efe; 5592 struct filetimes_extattr_entry *ft_extattr; 5593 struct timestamp *atime, *mtime, *attrtime, *ctime; 5594 struct timestamp fe_ctime; 5595 struct timespec cur_birth; 5596 uint32_t offset, a_l; 5597 uint8_t *filedata; 5598 int error; 5599 5600 /* protect against rogue values */ 5601 if (!udf_node) 5602 return; 5603 5604 fe = udf_node->fe; 5605 efe = udf_node->efe; 5606 5607 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 5608 return; 5609 5610 /* get descriptor information */ 5611 if (fe) { 5612 atime = &fe->atime; 5613 mtime = &fe->mtime; 5614 attrtime = &fe->attrtime; 5615 filedata = fe->data; 5616 5617 /* initial save dummy setting */ 5618 ctime = &fe_ctime; 5619 5620 /* check our extended attribute if present */ 5621 error = udf_extattr_search_intern(udf_node, 5622 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 5623 if (!error) { 5624 ft_extattr = (struct filetimes_extattr_entry *) 5625 (filedata + offset); 5626 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 5627 ctime = &ft_extattr->times[0]; 5628 } 5629 /* TODO create the extended attribute if not found ? */ 5630 } else { 5631 assert(udf_node->efe); 5632 atime = &efe->atime; 5633 mtime = &efe->mtime; 5634 attrtime = &efe->attrtime; 5635 ctime = &efe->ctime; 5636 } 5637 5638 vfs_timestamp(&now); 5639 5640 /* set access time */ 5641 if (udf_node->i_flags & IN_ACCESS) { 5642 if (acc == NULL) 5643 acc = &now; 5644 udf_timespec_to_timestamp(acc, atime); 5645 } 5646 5647 /* set modification time */ 5648 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 5649 if (mod == NULL) 5650 mod = &now; 5651 udf_timespec_to_timestamp(mod, mtime); 5652 5653 /* ensure birthtime is older than set modification! */ 5654 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 5655 if ((cur_birth.tv_sec > mod->tv_sec) || 5656 ((cur_birth.tv_sec == mod->tv_sec) && 5657 (cur_birth.tv_nsec > mod->tv_nsec))) { 5658 udf_timespec_to_timestamp(mod, ctime); 5659 } 5660 } 5661 5662 /* update birthtime if specified */ 5663 /* XXX we asume here that given birthtime is older than mod */ 5664 if (birth && (birth->tv_sec != VNOVAL)) { 5665 udf_timespec_to_timestamp(birth, ctime); 5666 } 5667 5668 /* set change time */ 5669 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 5670 udf_timespec_to_timestamp(&now, attrtime); 5671 5672 /* notify updates to the node itself */ 5673 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 5674 udf_node->i_flags |= IN_ACCESSED; 5675 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 5676 udf_node->i_flags |= IN_MODIFIED; 5677 5678 /* clear modification flags */ 5679 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 5680 } 5681 5682 /* --------------------------------------------------------------------- */ 5683 5684 int 5685 udf_update(struct vnode *vp, struct timespec *acc, 5686 struct timespec *mod, struct timespec *birth, int updflags) 5687 { 5688 struct udf_node *udf_node = VTOI(vp); 5689 struct udf_mount *ump = udf_node->ump; 5690 struct regid *impl_id; 5691 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 5692 int waitfor, flags; 5693 5694 #ifdef DEBUG 5695 char bits[128]; 5696 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 5697 updflags)); 5698 bitmask_snprintf(udf_node->i_flags, IN_FLAGBITS, bits, sizeof(bits)); 5699 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 5700 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 5701 #endif 5702 5703 /* set our times */ 5704 udf_itimes(udf_node, acc, mod, birth); 5705 5706 /* set our implementation id */ 5707 if (udf_node->fe) { 5708 impl_id = &udf_node->fe->imp_id; 5709 } else { 5710 impl_id = &udf_node->efe->imp_id; 5711 } 5712 udf_set_regid(impl_id, IMPL_NAME); 5713 udf_add_impl_regid(ump, impl_id); 5714 5715 /* if called when mounted readonly, never write back */ 5716 if (vp->v_mount->mnt_flag & MNT_RDONLY) 5717 return 0; 5718 5719 /* check if the node is dirty 'enough'*/ 5720 if (updflags & UPDATE_CLOSE) { 5721 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 5722 } else { 5723 flags = udf_node->i_flags & IN_MODIFIED; 5724 } 5725 if (flags == 0) 5726 return 0; 5727 5728 /* determine if we need to write sync or async */ 5729 waitfor = 0; 5730 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 5731 /* sync mounted */ 5732 waitfor = updflags & UPDATE_WAIT; 5733 if (updflags & UPDATE_DIROP) 5734 waitfor |= UPDATE_WAIT; 5735 } 5736 if (waitfor) 5737 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 5738 5739 return 0; 5740 } 5741 5742 5743 /* --------------------------------------------------------------------- */ 5744 5745 5746 /* 5747 * Read one fid and process it into a dirent and advance to the next (*fid) 5748 * has to be allocated a logical block in size, (*dirent) struct dirent length 5749 */ 5750 5751 int 5752 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 5753 struct fileid_desc *fid, struct dirent *dirent) 5754 { 5755 struct udf_node *dir_node = VTOI(vp); 5756 struct udf_mount *ump = dir_node->ump; 5757 struct file_entry *fe = dir_node->fe; 5758 struct extfile_entry *efe = dir_node->efe; 5759 uint32_t fid_size, lb_size; 5760 uint64_t file_size; 5761 char *fid_name; 5762 int enough, error; 5763 5764 assert(fid); 5765 assert(dirent); 5766 assert(dir_node); 5767 assert(offset); 5768 assert(*offset != 1); 5769 5770 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 5771 /* check if we're past the end of the directory */ 5772 if (fe) { 5773 file_size = udf_rw64(fe->inf_len); 5774 } else { 5775 assert(dir_node->efe); 5776 file_size = udf_rw64(efe->inf_len); 5777 } 5778 if (*offset >= file_size) 5779 return EINVAL; 5780 5781 /* get maximum length of FID descriptor */ 5782 lb_size = udf_rw32(ump->logical_vol->lb_size); 5783 5784 /* initialise return values */ 5785 fid_size = 0; 5786 memset(dirent, 0, sizeof(struct dirent)); 5787 memset(fid, 0, lb_size); 5788 5789 enough = (file_size - (*offset) >= UDF_FID_SIZE); 5790 if (!enough) { 5791 /* short dir ... */ 5792 return EIO; 5793 } 5794 5795 error = vn_rdwr(UIO_READ, vp, 5796 fid, MIN(file_size - (*offset), lb_size), *offset, 5797 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 5798 NULL, NULL); 5799 if (error) 5800 return error; 5801 5802 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 5803 /* 5804 * Check if we got a whole descriptor. 5805 * TODO Try to `resync' directory stream when something is very wrong. 5806 */ 5807 5808 /* check if our FID header is OK */ 5809 error = udf_check_tag(fid); 5810 if (error) { 5811 goto brokendir; 5812 } 5813 DPRINTF(FIDS, ("\ttag check ok\n")); 5814 5815 if (udf_rw16(fid->tag.id) != TAGID_FID) { 5816 error = EIO; 5817 goto brokendir; 5818 } 5819 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 5820 5821 /* check for length */ 5822 fid_size = udf_fidsize(fid); 5823 enough = (file_size - (*offset) >= fid_size); 5824 if (!enough) { 5825 error = EIO; 5826 goto brokendir; 5827 } 5828 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 5829 5830 /* check FID contents */ 5831 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 5832 brokendir: 5833 if (error) { 5834 /* note that is sometimes a bit quick to report */ 5835 printf("BROKEN DIRECTORY ENTRY\n"); 5836 /* RESYNC? */ 5837 /* TODO: use udf_resync_fid_stream */ 5838 return EIO; 5839 } 5840 DPRINTF(FIDS, ("\tpayload checked ok\n")); 5841 5842 /* we got a whole and valid descriptor! */ 5843 DPRINTF(FIDS, ("\tinterpret FID\n")); 5844 5845 /* create resulting dirent structure */ 5846 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 5847 udf_to_unix_name(dirent->d_name, MAXNAMLEN, 5848 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 5849 5850 /* '..' has no name, so provide one */ 5851 if (fid->file_char & UDF_FILE_CHAR_PAR) 5852 strcpy(dirent->d_name, ".."); 5853 5854 dirent->d_fileno = udf_calchash(&fid->icb); /* inode hash XXX */ 5855 dirent->d_namlen = strlen(dirent->d_name); 5856 dirent->d_reclen = _DIRENT_SIZE(dirent); 5857 5858 /* 5859 * Note that its not worth trying to go for the filetypes now... its 5860 * too expensive too 5861 */ 5862 dirent->d_type = DT_UNKNOWN; 5863 5864 /* initial guess for filetype we can make */ 5865 if (fid->file_char & UDF_FILE_CHAR_DIR) 5866 dirent->d_type = DT_DIR; 5867 5868 /* advance */ 5869 *offset += fid_size; 5870 5871 return error; 5872 } 5873 5874 5875 /* --------------------------------------------------------------------- */ 5876 5877 static void 5878 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int waitfor, 5879 int pass, int *ndirty) 5880 { 5881 struct udf_node *udf_node, *n_udf_node; 5882 struct vnode *vp; 5883 int vdirty, error; 5884 int on_type, on_flags, on_vnode; 5885 5886 derailed: 5887 KASSERT(mutex_owned(&mntvnode_lock)); 5888 5889 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 5890 udf_node = LIST_FIRST(&ump->sorted_udf_nodes); 5891 for (;udf_node; udf_node = n_udf_node) { 5892 DPRINTF(SYNC, (".")); 5893 5894 udf_node->i_flags &= ~IN_SYNCED; 5895 vp = udf_node->vnode; 5896 5897 mutex_enter(&vp->v_interlock); 5898 n_udf_node = LIST_NEXT(udf_node, sortchain); 5899 if (n_udf_node) 5900 n_udf_node->i_flags |= IN_SYNCED; 5901 5902 /* system nodes are not synced this way */ 5903 if (vp->v_vflag & VV_SYSTEM) { 5904 mutex_exit(&vp->v_interlock); 5905 continue; 5906 } 5907 5908 /* check if its dirty enough to even try */ 5909 on_type = (waitfor == MNT_LAZY || vp->v_type == VNON); 5910 on_flags = ((udf_node->i_flags & 5911 (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0); 5912 on_vnode = LIST_EMPTY(&vp->v_dirtyblkhd) 5913 && UVM_OBJ_IS_CLEAN(&vp->v_uobj); 5914 if (on_type || (on_flags || on_vnode)) { /* XXX */ 5915 /* not dirty (enough?) */ 5916 mutex_exit(&vp->v_interlock); 5917 continue; 5918 } 5919 5920 mutex_exit(&mntvnode_lock); 5921 error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK); 5922 if (error) { 5923 mutex_enter(&mntvnode_lock); 5924 if (error == ENOENT) 5925 goto derailed; 5926 *ndirty += 1; 5927 continue; 5928 } 5929 5930 switch (pass) { 5931 case 1: 5932 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 5933 break; 5934 case 2: 5935 vdirty = vp->v_numoutput; 5936 if (vp->v_tag == VT_UDF) 5937 vdirty += udf_node->outstanding_bufs + 5938 udf_node->outstanding_nodedscr; 5939 if (vdirty == 0) 5940 VOP_FSYNC(vp, cred, 0,0,0); 5941 *ndirty += vdirty; 5942 break; 5943 case 3: 5944 vdirty = vp->v_numoutput; 5945 if (vp->v_tag == VT_UDF) 5946 vdirty += udf_node->outstanding_bufs + 5947 udf_node->outstanding_nodedscr; 5948 *ndirty += vdirty; 5949 break; 5950 } 5951 5952 vput(vp); 5953 mutex_enter(&mntvnode_lock); 5954 } 5955 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 5956 } 5957 5958 5959 void 5960 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 5961 { 5962 int dummy, ndirty; 5963 5964 mutex_enter(&mntvnode_lock); 5965 recount: 5966 dummy = 0; 5967 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5968 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 5969 udf_sync_pass(ump, cred, waitfor, 1, &dummy); 5970 5971 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5972 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 5973 udf_sync_pass(ump, cred, waitfor, 2, &dummy); 5974 5975 if (waitfor == MNT_WAIT) { 5976 ndirty = ump->devvp->v_numoutput; 5977 DPRINTF(NODE, ("counting pending blocks: on devvp %d\n", 5978 ndirty)); 5979 udf_sync_pass(ump, cred, waitfor, 3, &ndirty); 5980 DPRINTF(NODE, ("counted num dirty pending blocks %d\n", 5981 ndirty)); 5982 5983 if (ndirty) { 5984 /* 1/4 second wait */ 5985 cv_timedwait(&ump->dirtynodes_cv, &mntvnode_lock, 5986 hz/4); 5987 goto recount; 5988 } 5989 } 5990 5991 mutex_exit(&mntvnode_lock); 5992 } 5993 5994 /* --------------------------------------------------------------------- */ 5995 5996 /* 5997 * Read and write file extent in/from the buffer. 5998 * 5999 * The splitup of the extent into seperate request-buffers is to minimise 6000 * copying around as much as possible. 6001 * 6002 * block based file reading and writing 6003 */ 6004 6005 static int 6006 udf_read_internal(struct udf_node *node, uint8_t *blob) 6007 { 6008 struct udf_mount *ump; 6009 struct file_entry *fe = node->fe; 6010 struct extfile_entry *efe = node->efe; 6011 uint64_t inflen; 6012 uint32_t sector_size; 6013 uint8_t *pos; 6014 int icbflags, addr_type; 6015 6016 /* get extent and do some paranoia checks */ 6017 ump = node->ump; 6018 sector_size = ump->discinfo.sector_size; 6019 6020 if (fe) { 6021 inflen = udf_rw64(fe->inf_len); 6022 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6023 icbflags = udf_rw16(fe->icbtag.flags); 6024 } else { 6025 assert(node->efe); 6026 inflen = udf_rw64(efe->inf_len); 6027 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6028 icbflags = udf_rw16(efe->icbtag.flags); 6029 } 6030 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6031 6032 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6033 assert(inflen < sector_size); 6034 6035 /* copy out info */ 6036 memset(blob, 0, sector_size); 6037 memcpy(blob, pos, inflen); 6038 6039 return 0; 6040 } 6041 6042 6043 static int 6044 udf_write_internal(struct udf_node *node, uint8_t *blob) 6045 { 6046 struct udf_mount *ump; 6047 struct file_entry *fe = node->fe; 6048 struct extfile_entry *efe = node->efe; 6049 uint64_t inflen; 6050 uint32_t sector_size; 6051 uint8_t *pos; 6052 int icbflags, addr_type; 6053 6054 /* get extent and do some paranoia checks */ 6055 ump = node->ump; 6056 sector_size = ump->discinfo.sector_size; 6057 6058 if (fe) { 6059 inflen = udf_rw64(fe->inf_len); 6060 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6061 icbflags = udf_rw16(fe->icbtag.flags); 6062 } else { 6063 assert(node->efe); 6064 inflen = udf_rw64(efe->inf_len); 6065 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6066 icbflags = udf_rw16(efe->icbtag.flags); 6067 } 6068 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6069 6070 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6071 assert(inflen < sector_size); 6072 6073 /* copy in blob */ 6074 /* memset(pos, 0, inflen); */ 6075 memcpy(pos, blob, inflen); 6076 6077 return 0; 6078 } 6079 6080 6081 void 6082 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6083 { 6084 struct buf *nestbuf; 6085 struct udf_mount *ump = udf_node->ump; 6086 uint64_t *mapping; 6087 uint64_t run_start; 6088 uint32_t sector_size; 6089 uint32_t buf_offset, sector, rbuflen, rblk; 6090 uint32_t from, lblkno; 6091 uint32_t sectors; 6092 uint8_t *buf_pos; 6093 int error, run_length, isdir, what; 6094 6095 sector_size = udf_node->ump->discinfo.sector_size; 6096 6097 from = buf->b_blkno; 6098 sectors = buf->b_bcount / sector_size; 6099 6100 isdir = (udf_node->vnode->v_type == VDIR); 6101 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6102 6103 /* assure we have enough translation slots */ 6104 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6105 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6106 6107 if (sectors > UDF_MAX_MAPPINGS) { 6108 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6109 buf->b_error = EIO; 6110 biodone(buf); 6111 return; 6112 } 6113 6114 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6115 6116 error = 0; 6117 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6118 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6119 if (error) { 6120 buf->b_error = error; 6121 biodone(buf); 6122 goto out; 6123 } 6124 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6125 6126 /* pre-check if its an internal */ 6127 if (*mapping == UDF_TRANS_INTERN) { 6128 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6129 if (error) 6130 buf->b_error = error; 6131 biodone(buf); 6132 goto out; 6133 } 6134 DPRINTF(READ, ("\tnot intern\n")); 6135 6136 #ifdef DEBUG 6137 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6138 printf("Returned translation table:\n"); 6139 for (sector = 0; sector < sectors; sector++) { 6140 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6141 } 6142 } 6143 #endif 6144 6145 /* request read-in of data from disc sheduler */ 6146 buf->b_resid = buf->b_bcount; 6147 for (sector = 0; sector < sectors; sector++) { 6148 buf_offset = sector * sector_size; 6149 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6150 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6151 6152 /* check if its zero or unmapped to stop reading */ 6153 switch (mapping[sector]) { 6154 case UDF_TRANS_UNMAPPED: 6155 case UDF_TRANS_ZERO: 6156 /* copy zero sector TODO runlength like below */ 6157 memset(buf_pos, 0, sector_size); 6158 DPRINTF(READ, ("\treturning zero sector\n")); 6159 nestiobuf_done(buf, sector_size, 0); 6160 break; 6161 default : 6162 DPRINTF(READ, ("\tread sector " 6163 "%"PRIu64"\n", mapping[sector])); 6164 6165 lblkno = from + sector; 6166 run_start = mapping[sector]; 6167 run_length = 1; 6168 while (sector < sectors-1) { 6169 if (mapping[sector+1] != mapping[sector]+1) 6170 break; 6171 run_length++; 6172 sector++; 6173 } 6174 6175 /* 6176 * nest an iobuf and mark it for async reading. Since 6177 * we're using nested buffers, they can't be cached by 6178 * design. 6179 */ 6180 rbuflen = run_length * sector_size; 6181 rblk = run_start * (sector_size/DEV_BSIZE); 6182 6183 nestbuf = getiobuf(NULL, true); 6184 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6185 /* nestbuf is B_ASYNC */ 6186 6187 /* identify this nestbuf */ 6188 nestbuf->b_lblkno = lblkno; 6189 assert(nestbuf->b_vp == udf_node->vnode); 6190 6191 /* CD shedules on raw blkno */ 6192 nestbuf->b_blkno = rblk; 6193 nestbuf->b_proc = NULL; 6194 nestbuf->b_rawblkno = rblk; 6195 nestbuf->b_udf_c_type = what; 6196 6197 udf_discstrat_queuebuf(ump, nestbuf); 6198 } 6199 } 6200 out: 6201 /* if we're synchronously reading, wait for the completion */ 6202 if ((buf->b_flags & B_ASYNC) == 0) 6203 biowait(buf); 6204 6205 DPRINTF(READ, ("\tend of read_filebuf\n")); 6206 free(mapping, M_TEMP); 6207 return; 6208 } 6209 6210 6211 void 6212 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6213 { 6214 struct buf *nestbuf; 6215 struct udf_mount *ump = udf_node->ump; 6216 uint64_t *mapping; 6217 uint64_t run_start; 6218 uint32_t lb_size; 6219 uint32_t buf_offset, lb_num, rbuflen, rblk; 6220 uint32_t from, lblkno; 6221 uint32_t num_lb; 6222 uint8_t *buf_pos; 6223 int error, run_length, isdir, what, s; 6224 6225 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6226 6227 from = buf->b_blkno; 6228 num_lb = buf->b_bcount / lb_size; 6229 6230 isdir = (udf_node->vnode->v_type == VDIR); 6231 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 6232 6233 /* assure we have enough translation slots */ 6234 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6235 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6236 6237 if (num_lb > UDF_MAX_MAPPINGS) { 6238 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6239 buf->b_error = EIO; 6240 biodone(buf); 6241 return; 6242 } 6243 6244 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6245 6246 error = 0; 6247 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6248 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6249 if (error) { 6250 buf->b_error = error; 6251 biodone(buf); 6252 goto out; 6253 } 6254 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6255 6256 /* if its internally mapped, we can write it in the descriptor itself */ 6257 if (*mapping == UDF_TRANS_INTERN) { 6258 /* TODO paranoia check if we ARE going to have enough space */ 6259 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6260 if (error) 6261 buf->b_error = error; 6262 biodone(buf); 6263 goto out; 6264 } 6265 DPRINTF(WRITE, ("\tnot intern\n")); 6266 6267 /* request write out of data to disc sheduler */ 6268 buf->b_resid = buf->b_bcount; 6269 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6270 buf_offset = lb_num * lb_size; 6271 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6272 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6273 6274 /* 6275 * Mappings are not that important here. Just before we write 6276 * the lb_num we late-allocate them when needed and update the 6277 * mapping in the udf_node. 6278 */ 6279 6280 /* XXX why not ignore the mapping altogether ? */ 6281 /* TODO estimate here how much will be late-allocated */ 6282 DPRINTF(WRITE, ("\twrite lb_num " 6283 "%"PRIu64, mapping[lb_num])); 6284 6285 lblkno = from + lb_num; 6286 run_start = mapping[lb_num]; 6287 run_length = 1; 6288 while (lb_num < num_lb-1) { 6289 if (mapping[lb_num+1] != mapping[lb_num]+1) 6290 if (mapping[lb_num+1] != mapping[lb_num]) 6291 break; 6292 run_length++; 6293 lb_num++; 6294 } 6295 DPRINTF(WRITE, ("+ %d\n", run_length)); 6296 6297 /* nest an iobuf on the master buffer for the extent */ 6298 rbuflen = run_length * lb_size; 6299 rblk = run_start * (lb_size/DEV_BSIZE); 6300 6301 #if 0 6302 /* if its zero or unmapped, our blknr gets -1 for unmapped */ 6303 switch (mapping[lb_num]) { 6304 case UDF_TRANS_UNMAPPED: 6305 case UDF_TRANS_ZERO: 6306 rblk = -1; 6307 break; 6308 default: 6309 rblk = run_start * (lb_size/DEV_BSIZE); 6310 break; 6311 } 6312 #endif 6313 6314 nestbuf = getiobuf(NULL, true); 6315 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6316 /* nestbuf is B_ASYNC */ 6317 6318 /* identify this nestbuf */ 6319 nestbuf->b_lblkno = lblkno; 6320 KASSERT(nestbuf->b_vp == udf_node->vnode); 6321 6322 /* CD shedules on raw blkno */ 6323 nestbuf->b_blkno = rblk; 6324 nestbuf->b_proc = NULL; 6325 nestbuf->b_rawblkno = rblk; 6326 nestbuf->b_udf_c_type = what; 6327 6328 /* increment our outstanding bufs counter */ 6329 s = splbio(); 6330 udf_node->outstanding_bufs++; 6331 splx(s); 6332 6333 udf_discstrat_queuebuf(ump, nestbuf); 6334 } 6335 out: 6336 /* if we're synchronously writing, wait for the completion */ 6337 if ((buf->b_flags & B_ASYNC) == 0) 6338 biowait(buf); 6339 6340 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6341 free(mapping, M_TEMP); 6342 return; 6343 } 6344 6345 /* --------------------------------------------------------------------- */ 6346 6347 6348
Indexes created Thu Sep 25 16:09:42 GMT 2025