udf_subr.c revision 1.142
1 /* $NetBSD: udf_subr.c,v 1.142 2018/07/25 11:09:22 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 1.142 2018/07/25 11:09:22 reinoud Exp $"); 33 #endif /* not lint */ 34 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_compat_netbsd.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/sysctl.h> 43 #include <sys/namei.h> 44 #include <sys/proc.h> 45 #include <sys/kernel.h> 46 #include <sys/vnode.h> 47 #include <miscfs/genfs/genfs_node.h> 48 #include <sys/mount.h> 49 #include <sys/buf.h> 50 #include <sys/file.h> 51 #include <sys/device.h> 52 #include <sys/disklabel.h> 53 #include <sys/ioctl.h> 54 #include <sys/malloc.h> 55 #include <sys/dirent.h> 56 #include <sys/stat.h> 57 #include <sys/conf.h> 58 #include <sys/kauth.h> 59 #include <fs/unicode.h> 60 #include <dev/clock_subr.h> 61 62 #include <fs/udf/ecma167-udf.h> 63 #include <fs/udf/udf_mount.h> 64 #include <sys/dirhash.h> 65 66 #include "udf.h" 67 #include "udf_subr.h" 68 #include "udf_bswap.h" 69 70 71 #define VTOI(vnode) ((struct udf_node *) (vnode)->v_data) 72 73 #define UDF_SET_SYSTEMFILE(vp) \ 74 /* XXXAD Is the vnode locked? */ \ 75 (vp)->v_vflag |= VV_SYSTEM; \ 76 vref((vp)); \ 77 vput((vp)); \ 78 79 extern int syncer_maxdelay; /* maximum delay time */ 80 extern int (**udf_vnodeop_p)(void *); 81 82 /* --------------------------------------------------------------------- */ 83 84 //#ifdef DEBUG 85 #if 1 86 87 #if 0 88 static void 89 udf_dumpblob(boid *blob, uint32_t dlen) 90 { 91 int i, j; 92 93 printf("blob = %p\n", blob); 94 printf("dump of %d bytes\n", dlen); 95 96 for (i = 0; i < dlen; i+ = 16) { 97 printf("%04x ", i); 98 for (j = 0; j < 16; j++) { 99 if (i+j < dlen) { 100 printf("%02x ", blob[i+j]); 101 } else { 102 printf(" "); 103 } 104 } 105 for (j = 0; j < 16; j++) { 106 if (i+j < dlen) { 107 if (blob[i+j]>32 && blob[i+j]! = 127) { 108 printf("%c", blob[i+j]); 109 } else { 110 printf("."); 111 } 112 } 113 } 114 printf("\n"); 115 } 116 printf("\n"); 117 Debugger(); 118 } 119 #endif 120 121 static void 122 udf_dump_discinfo(struct udf_mount *ump) 123 { 124 char bits[128]; 125 struct mmc_discinfo *di = &ump->discinfo; 126 127 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 128 return; 129 130 printf("Device/media info :\n"); 131 printf("\tMMC profile 0x%02x\n", di->mmc_profile); 132 printf("\tderived class %d\n", di->mmc_class); 133 printf("\tsector size %d\n", di->sector_size); 134 printf("\tdisc state %d\n", di->disc_state); 135 printf("\tlast ses state %d\n", di->last_session_state); 136 printf("\tbg format state %d\n", di->bg_format_state); 137 printf("\tfrst track %d\n", di->first_track); 138 printf("\tfst on last ses %d\n", di->first_track_last_session); 139 printf("\tlst on last ses %d\n", di->last_track_last_session); 140 printf("\tlink block penalty %d\n", di->link_block_penalty); 141 snprintb(bits, sizeof(bits), MMC_DFLAGS_FLAGBITS, di->disc_flags); 142 printf("\tdisc flags %s\n", bits); 143 printf("\tdisc id %x\n", di->disc_id); 144 printf("\tdisc barcode %"PRIx64"\n", di->disc_barcode); 145 146 printf("\tnum sessions %d\n", di->num_sessions); 147 printf("\tnum tracks %d\n", di->num_tracks); 148 149 snprintb(bits, sizeof(bits), MMC_CAP_FLAGBITS, di->mmc_cur); 150 printf("\tcapabilities cur %s\n", bits); 151 snprintb(bits, sizeof(bits), MMC_CAP_FLAGBITS, di->mmc_cap); 152 printf("\tcapabilities cap %s\n", bits); 153 } 154 155 static void 156 udf_dump_trackinfo(struct mmc_trackinfo *trackinfo) 157 { 158 char bits[128]; 159 160 if ((udf_verbose & UDF_DEBUG_VOLUMES) == 0) 161 return; 162 163 printf("Trackinfo for track %d:\n", trackinfo->tracknr); 164 printf("\tsessionnr %d\n", trackinfo->sessionnr); 165 printf("\ttrack mode %d\n", trackinfo->track_mode); 166 printf("\tdata mode %d\n", trackinfo->data_mode); 167 snprintb(bits, sizeof(bits), MMC_TRACKINFO_FLAGBITS, trackinfo->flags); 168 printf("\tflags %s\n", bits); 169 170 printf("\ttrack start %d\n", trackinfo->track_start); 171 printf("\tnext_writable %d\n", trackinfo->next_writable); 172 printf("\tfree_blocks %d\n", trackinfo->free_blocks); 173 printf("\tpacket_size %d\n", trackinfo->packet_size); 174 printf("\ttrack size %d\n", trackinfo->track_size); 175 printf("\tlast recorded block %d\n", trackinfo->last_recorded); 176 } 177 178 #else 179 #define udf_dump_discinfo(a); 180 #define udf_dump_trackinfo(a); 181 #endif 182 183 184 /* --------------------------------------------------------------------- */ 185 186 /* not called often */ 187 int 188 udf_update_discinfo(struct udf_mount *ump) 189 { 190 struct vnode *devvp = ump->devvp; 191 uint64_t psize; 192 unsigned secsize; 193 struct mmc_discinfo *di; 194 int error; 195 196 DPRINTF(VOLUMES, ("read/update disc info\n")); 197 di = &ump->discinfo; 198 memset(di, 0, sizeof(struct mmc_discinfo)); 199 200 /* check if we're on a MMC capable device, i.e. CD/DVD */ 201 error = VOP_IOCTL(devvp, MMCGETDISCINFO, di, FKIOCTL, NOCRED); 202 if (error == 0) { 203 udf_dump_discinfo(ump); 204 return 0; 205 } 206 207 /* disc partition support */ 208 error = getdisksize(devvp, &psize, &secsize); 209 if (error) 210 return error; 211 212 /* set up a disc info profile for partitions */ 213 di->mmc_profile = 0x01; /* disc type */ 214 di->mmc_class = MMC_CLASS_DISC; 215 di->disc_state = MMC_STATE_CLOSED; 216 di->last_session_state = MMC_STATE_CLOSED; 217 di->bg_format_state = MMC_BGFSTATE_COMPLETED; 218 di->link_block_penalty = 0; 219 220 di->mmc_cur = MMC_CAP_RECORDABLE | MMC_CAP_REWRITABLE | 221 MMC_CAP_ZEROLINKBLK | MMC_CAP_HW_DEFECTFREE; 222 di->mmc_cap = di->mmc_cur; 223 di->disc_flags = MMC_DFLAGS_UNRESTRICTED; 224 225 /* TODO problem with last_possible_lba on resizable VND; request */ 226 di->last_possible_lba = psize; 227 di->sector_size = secsize; 228 229 di->num_sessions = 1; 230 di->num_tracks = 1; 231 232 di->first_track = 1; 233 di->first_track_last_session = di->last_track_last_session = 1; 234 235 udf_dump_discinfo(ump); 236 return 0; 237 } 238 239 240 int 241 udf_update_trackinfo(struct udf_mount *ump, struct mmc_trackinfo *ti) 242 { 243 struct vnode *devvp = ump->devvp; 244 struct mmc_discinfo *di = &ump->discinfo; 245 int error, class; 246 247 DPRINTF(VOLUMES, ("read track info\n")); 248 249 class = di->mmc_class; 250 if (class != MMC_CLASS_DISC) { 251 /* tracknr specified in struct ti */ 252 error = VOP_IOCTL(devvp, MMCGETTRACKINFO, ti, FKIOCTL, NOCRED); 253 return error; 254 } 255 256 /* disc partition support */ 257 if (ti->tracknr != 1) 258 return EIO; 259 260 /* create fake ti (TODO check for resized vnds) */ 261 ti->sessionnr = 1; 262 263 ti->track_mode = 0; /* XXX */ 264 ti->data_mode = 0; /* XXX */ 265 ti->flags = MMC_TRACKINFO_LRA_VALID | MMC_TRACKINFO_NWA_VALID; 266 267 ti->track_start = 0; 268 ti->packet_size = 1; 269 270 /* TODO support for resizable vnd */ 271 ti->track_size = di->last_possible_lba; 272 ti->next_writable = di->last_possible_lba; 273 ti->last_recorded = ti->next_writable; 274 ti->free_blocks = 0; 275 276 return 0; 277 } 278 279 280 int 281 udf_setup_writeparams(struct udf_mount *ump) 282 { 283 struct mmc_writeparams mmc_writeparams; 284 int error; 285 286 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 287 return 0; 288 289 /* 290 * only CD burning normally needs setting up, but other disc types 291 * might need other settings to be made. The MMC framework will set up 292 * the nessisary recording parameters according to the disc 293 * characteristics read in. Modifications can be made in the discinfo 294 * structure passed to change the nature of the disc. 295 */ 296 297 memset(&mmc_writeparams, 0, sizeof(struct mmc_writeparams)); 298 mmc_writeparams.mmc_class = ump->discinfo.mmc_class; 299 mmc_writeparams.mmc_cur = ump->discinfo.mmc_cur; 300 301 /* 302 * UDF dictates first track to determine track mode for the whole 303 * disc. [UDF 1.50/6.10.1.1, UDF 1.50/6.10.2.1] 304 * To prevent problems with a `reserved' track in front we start with 305 * the 2nd track and if that is not valid, go for the 1st. 306 */ 307 mmc_writeparams.tracknr = 2; 308 mmc_writeparams.data_mode = MMC_DATAMODE_DEFAULT; /* XA disc */ 309 mmc_writeparams.track_mode = MMC_TRACKMODE_DEFAULT; /* data */ 310 311 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, &mmc_writeparams, 312 FKIOCTL, NOCRED); 313 if (error) { 314 mmc_writeparams.tracknr = 1; 315 error = VOP_IOCTL(ump->devvp, MMCSETUPWRITEPARAMS, 316 &mmc_writeparams, FKIOCTL, NOCRED); 317 } 318 return error; 319 } 320 321 322 void 323 udf_mmc_synchronise_caches(struct udf_mount *ump) 324 { 325 struct mmc_op mmc_op; 326 327 DPRINTF(CALL, ("udf_mcc_synchronise_caches()\n")); 328 329 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 330 return; 331 332 /* discs are done now */ 333 if (ump->discinfo.mmc_class == MMC_CLASS_DISC) 334 return; 335 336 memset(&mmc_op, 0, sizeof(struct mmc_op)); 337 mmc_op.operation = MMC_OP_SYNCHRONISECACHE; 338 339 /* ignore return code */ 340 (void) VOP_IOCTL(ump->devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 341 } 342 343 /* --------------------------------------------------------------------- */ 344 345 /* track/session searching for mounting */ 346 int 347 udf_search_tracks(struct udf_mount *ump, struct udf_args *args, 348 int *first_tracknr, int *last_tracknr) 349 { 350 struct mmc_trackinfo trackinfo; 351 uint32_t tracknr, start_track, num_tracks; 352 int error; 353 354 /* if negative, sessionnr is relative to last session */ 355 if (args->sessionnr < 0) { 356 args->sessionnr += ump->discinfo.num_sessions; 357 } 358 359 /* sanity */ 360 if (args->sessionnr < 0) 361 args->sessionnr = 0; 362 if (args->sessionnr > ump->discinfo.num_sessions) 363 args->sessionnr = ump->discinfo.num_sessions; 364 365 /* search the tracks for this session, zero session nr indicates last */ 366 if (args->sessionnr == 0) 367 args->sessionnr = ump->discinfo.num_sessions; 368 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 369 args->sessionnr--; 370 371 /* sanity again */ 372 if (args->sessionnr < 0) 373 args->sessionnr = 0; 374 375 /* search the first and last track of the specified session */ 376 num_tracks = ump->discinfo.num_tracks; 377 start_track = ump->discinfo.first_track; 378 379 /* search for first track of this session */ 380 for (tracknr = start_track; tracknr <= num_tracks; tracknr++) { 381 /* get track info */ 382 trackinfo.tracknr = tracknr; 383 error = udf_update_trackinfo(ump, &trackinfo); 384 if (error) 385 return error; 386 387 if (trackinfo.sessionnr == args->sessionnr) 388 break; 389 } 390 *first_tracknr = tracknr; 391 392 /* search for last track of this session */ 393 for (;tracknr <= num_tracks; tracknr++) { 394 /* get track info */ 395 trackinfo.tracknr = tracknr; 396 error = udf_update_trackinfo(ump, &trackinfo); 397 if (error || (trackinfo.sessionnr != args->sessionnr)) { 398 tracknr--; 399 break; 400 } 401 } 402 if (tracknr > num_tracks) 403 tracknr--; 404 405 *last_tracknr = tracknr; 406 407 if (*last_tracknr < *first_tracknr) { 408 printf( "udf_search_tracks: sanity check on drive+disc failed, " 409 "drive returned garbage\n"); 410 return EINVAL; 411 } 412 413 assert(*last_tracknr >= *first_tracknr); 414 return 0; 415 } 416 417 418 /* 419 * NOTE: this is the only routine in this file that directly peeks into the 420 * metadata file but since its at a larval state of the mount it can't hurt. 421 * 422 * XXX candidate for udf_allocation.c 423 * XXX clean me up!, change to new node reading code. 424 */ 425 426 static void 427 udf_check_track_metadata_overlap(struct udf_mount *ump, 428 struct mmc_trackinfo *trackinfo) 429 { 430 struct part_desc *part; 431 struct file_entry *fe; 432 struct extfile_entry *efe; 433 struct short_ad *s_ad; 434 struct long_ad *l_ad; 435 uint32_t track_start, track_end; 436 uint32_t phys_part_start, phys_part_end, part_start, part_end; 437 uint32_t sector_size, len, alloclen, plb_num; 438 uint8_t *pos; 439 int addr_type, icblen, icbflags; 440 441 /* get our track extents */ 442 track_start = trackinfo->track_start; 443 track_end = track_start + trackinfo->track_size; 444 445 /* get our base partition extent */ 446 KASSERT(ump->node_part == ump->fids_part); 447 part = ump->partitions[ump->vtop[ump->node_part]]; 448 phys_part_start = udf_rw32(part->start_loc); 449 phys_part_end = phys_part_start + udf_rw32(part->part_len); 450 451 /* no use if its outside the physical partition */ 452 if ((phys_part_start >= track_end) || (phys_part_end < track_start)) 453 return; 454 455 /* 456 * now follow all extents in the fe/efe to see if they refer to this 457 * track 458 */ 459 460 sector_size = ump->discinfo.sector_size; 461 462 /* XXX should we claim exclusive access to the metafile ? */ 463 /* TODO: move to new node read code */ 464 fe = ump->metadata_node->fe; 465 efe = ump->metadata_node->efe; 466 if (fe) { 467 alloclen = udf_rw32(fe->l_ad); 468 pos = &fe->data[0] + udf_rw32(fe->l_ea); 469 icbflags = udf_rw16(fe->icbtag.flags); 470 } else { 471 assert(efe); 472 alloclen = udf_rw32(efe->l_ad); 473 pos = &efe->data[0] + udf_rw32(efe->l_ea); 474 icbflags = udf_rw16(efe->icbtag.flags); 475 } 476 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 477 478 while (alloclen) { 479 if (addr_type == UDF_ICB_SHORT_ALLOC) { 480 icblen = sizeof(struct short_ad); 481 s_ad = (struct short_ad *) pos; 482 len = udf_rw32(s_ad->len); 483 plb_num = udf_rw32(s_ad->lb_num); 484 } else { 485 /* should not be present, but why not */ 486 icblen = sizeof(struct long_ad); 487 l_ad = (struct long_ad *) pos; 488 len = udf_rw32(l_ad->len); 489 plb_num = udf_rw32(l_ad->loc.lb_num); 490 /* pvpart_num = udf_rw16(l_ad->loc.part_num); */ 491 } 492 /* process extent */ 493 len = UDF_EXT_LEN(len); 494 495 part_start = phys_part_start + plb_num; 496 part_end = part_start + (len / sector_size); 497 498 if ((part_start >= track_start) && (part_end <= track_end)) { 499 /* extent is enclosed within this track */ 500 ump->metadata_track = *trackinfo; 501 return; 502 } 503 504 pos += icblen; 505 alloclen -= icblen; 506 } 507 } 508 509 510 int 511 udf_search_writing_tracks(struct udf_mount *ump) 512 { 513 struct vnode *devvp = ump->devvp; 514 struct mmc_trackinfo trackinfo; 515 struct mmc_op mmc_op; 516 struct part_desc *part; 517 uint32_t tracknr, start_track, num_tracks; 518 uint32_t track_start, track_end, part_start, part_end; 519 int node_alloc, error; 520 521 /* 522 * in the CD/(HD)DVD/BD recordable device model a few tracks within 523 * the last session might be open but in the UDF device model at most 524 * three tracks can be open: a reserved track for delayed ISO VRS 525 * writing, a data track and a metadata track. We search here for the 526 * data track and the metadata track. Note that the reserved track is 527 * troublesome but can be detected by its small size of < 512 sectors. 528 */ 529 530 /* update discinfo since it might have changed */ 531 error = udf_update_discinfo(ump); 532 if (error) 533 return error; 534 535 num_tracks = ump->discinfo.num_tracks; 536 start_track = ump->discinfo.first_track; 537 538 /* fetch info on first and possibly only track */ 539 trackinfo.tracknr = start_track; 540 error = udf_update_trackinfo(ump, &trackinfo); 541 if (error) 542 return error; 543 544 /* copy results to our mount point */ 545 ump->data_track = trackinfo; 546 ump->metadata_track = trackinfo; 547 548 /* if not sequential, we're done */ 549 if (num_tracks == 1) 550 return 0; 551 552 for (tracknr = start_track;tracknr <= num_tracks; tracknr++) { 553 /* get track info */ 554 trackinfo.tracknr = tracknr; 555 error = udf_update_trackinfo(ump, &trackinfo); 556 if (error) 557 return error; 558 559 /* 560 * If this track is marked damaged, ask for repair. This is an 561 * optional command, so ignore its error but report warning. 562 */ 563 if (trackinfo.flags & MMC_TRACKINFO_DAMAGED) { 564 memset(&mmc_op, 0, sizeof(mmc_op)); 565 mmc_op.operation = MMC_OP_REPAIRTRACK; 566 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 567 mmc_op.tracknr = tracknr; 568 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, FKIOCTL, NOCRED); 569 if (error) 570 (void)printf("Drive can't explicitly repair " 571 "damaged track %d, but it might " 572 "autorepair\n", tracknr); 573 574 /* reget track info */ 575 error = udf_update_trackinfo(ump, &trackinfo); 576 if (error) 577 return error; 578 } 579 if ((trackinfo.flags & MMC_TRACKINFO_NWA_VALID) == 0) 580 continue; 581 582 track_start = trackinfo.track_start; 583 track_end = track_start + trackinfo.track_size; 584 585 /* check for overlap on data partition */ 586 part = ump->partitions[ump->data_part]; 587 part_start = udf_rw32(part->start_loc); 588 part_end = part_start + udf_rw32(part->part_len); 589 if ((part_start < track_end) && (part_end > track_start)) { 590 ump->data_track = trackinfo; 591 /* TODO check if UDF partition data_part is writable */ 592 } 593 594 /* check for overlap on metadata partition */ 595 node_alloc = ump->vtop_alloc[ump->node_part]; 596 if ((node_alloc == UDF_ALLOC_METASEQUENTIAL) || 597 (node_alloc == UDF_ALLOC_METABITMAP)) { 598 udf_check_track_metadata_overlap(ump, &trackinfo); 599 } else { 600 ump->metadata_track = trackinfo; 601 } 602 } 603 604 if ((ump->data_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 605 return EROFS; 606 607 if ((ump->metadata_track.flags & MMC_TRACKINFO_NWA_VALID) == 0) 608 return EROFS; 609 610 return 0; 611 } 612 613 /* --------------------------------------------------------------------- */ 614 615 /* 616 * Check if the blob starts with a good UDF tag. Tags are protected by a 617 * checksum over the reader except one byte at position 4 that is the checksum 618 * itself. 619 */ 620 621 int 622 udf_check_tag(void *blob) 623 { 624 struct desc_tag *tag = blob; 625 uint8_t *pos, sum, cnt; 626 627 /* check TAG header checksum */ 628 pos = (uint8_t *) tag; 629 sum = 0; 630 631 for(cnt = 0; cnt < 16; cnt++) { 632 if (cnt != 4) 633 sum += *pos; 634 pos++; 635 } 636 if (sum != tag->cksum) { 637 /* bad tag header checksum; this is not a valid tag */ 638 return EINVAL; 639 } 640 641 return 0; 642 } 643 644 645 /* 646 * check tag payload will check descriptor CRC as specified. 647 * If the descriptor is too long, it will return EIO otherwise EINVAL. 648 */ 649 650 int 651 udf_check_tag_payload(void *blob, uint32_t max_length) 652 { 653 struct desc_tag *tag = blob; 654 uint16_t crc, crc_len; 655 656 crc_len = udf_rw16(tag->desc_crc_len); 657 658 /* check payload CRC if applicable */ 659 if (crc_len == 0) 660 return 0; 661 662 if (crc_len > max_length) 663 return EIO; 664 665 crc = udf_cksum(((uint8_t *) tag) + UDF_DESC_TAG_LENGTH, crc_len); 666 if (crc != udf_rw16(tag->desc_crc)) { 667 /* bad payload CRC; this is a broken tag */ 668 return EINVAL; 669 } 670 671 return 0; 672 } 673 674 675 void 676 udf_validate_tag_sum(void *blob) 677 { 678 struct desc_tag *tag = blob; 679 uint8_t *pos, sum, cnt; 680 681 /* calculate TAG header checksum */ 682 pos = (uint8_t *) tag; 683 sum = 0; 684 685 for(cnt = 0; cnt < 16; cnt++) { 686 if (cnt != 4) sum += *pos; 687 pos++; 688 } 689 tag->cksum = sum; /* 8 bit */ 690 } 691 692 693 /* assumes sector number of descriptor to be saved already present */ 694 void 695 udf_validate_tag_and_crc_sums(void *blob) 696 { 697 struct desc_tag *tag = blob; 698 uint8_t *btag = (uint8_t *) tag; 699 uint16_t crc, crc_len; 700 701 crc_len = udf_rw16(tag->desc_crc_len); 702 703 /* check payload CRC if applicable */ 704 if (crc_len > 0) { 705 crc = udf_cksum(btag + UDF_DESC_TAG_LENGTH, crc_len); 706 tag->desc_crc = udf_rw16(crc); 707 } 708 709 /* calculate TAG header checksum */ 710 udf_validate_tag_sum(blob); 711 } 712 713 /* --------------------------------------------------------------------- */ 714 715 /* 716 * XXX note the different semantics from udfclient: for FIDs it still rounds 717 * up to sectors. Use udf_fidsize() for a correct length. 718 */ 719 720 int 721 udf_tagsize(union dscrptr *dscr, uint32_t lb_size) 722 { 723 uint32_t size, tag_id, num_lb, elmsz; 724 725 tag_id = udf_rw16(dscr->tag.id); 726 727 switch (tag_id) { 728 case TAGID_LOGVOL : 729 size = sizeof(struct logvol_desc) - 1; 730 size += udf_rw32(dscr->lvd.mt_l); 731 break; 732 case TAGID_UNALLOC_SPACE : 733 elmsz = sizeof(struct extent_ad); 734 size = sizeof(struct unalloc_sp_desc) - elmsz; 735 size += udf_rw32(dscr->usd.alloc_desc_num) * elmsz; 736 break; 737 case TAGID_FID : 738 size = UDF_FID_SIZE + dscr->fid.l_fi + udf_rw16(dscr->fid.l_iu); 739 size = (size + 3) & ~3; 740 break; 741 case TAGID_LOGVOL_INTEGRITY : 742 size = sizeof(struct logvol_int_desc) - sizeof(uint32_t); 743 size += udf_rw32(dscr->lvid.l_iu); 744 size += (2 * udf_rw32(dscr->lvid.num_part) * sizeof(uint32_t)); 745 break; 746 case TAGID_SPACE_BITMAP : 747 size = sizeof(struct space_bitmap_desc) - 1; 748 size += udf_rw32(dscr->sbd.num_bytes); 749 break; 750 case TAGID_SPARING_TABLE : 751 elmsz = sizeof(struct spare_map_entry); 752 size = sizeof(struct udf_sparing_table) - elmsz; 753 size += udf_rw16(dscr->spt.rt_l) * elmsz; 754 break; 755 case TAGID_FENTRY : 756 size = sizeof(struct file_entry); 757 size += udf_rw32(dscr->fe.l_ea) + udf_rw32(dscr->fe.l_ad)-1; 758 break; 759 case TAGID_EXTFENTRY : 760 size = sizeof(struct extfile_entry); 761 size += udf_rw32(dscr->efe.l_ea) + udf_rw32(dscr->efe.l_ad)-1; 762 break; 763 case TAGID_FSD : 764 size = sizeof(struct fileset_desc); 765 break; 766 default : 767 size = sizeof(union dscrptr); 768 break; 769 } 770 771 if ((size == 0) || (lb_size == 0)) 772 return 0; 773 774 if (lb_size == 1) 775 return size; 776 777 /* round up in sectors */ 778 num_lb = (size + lb_size -1) / lb_size; 779 return num_lb * lb_size; 780 } 781 782 783 int 784 udf_fidsize(struct fileid_desc *fid) 785 { 786 uint32_t size; 787 788 if (udf_rw16(fid->tag.id) != TAGID_FID) 789 panic("got udf_fidsize on non FID\n"); 790 791 size = UDF_FID_SIZE + fid->l_fi + udf_rw16(fid->l_iu); 792 size = (size + 3) & ~3; 793 794 return size; 795 } 796 797 /* --------------------------------------------------------------------- */ 798 799 void 800 udf_lock_node(struct udf_node *udf_node, int flag, char const *fname, const int lineno) 801 { 802 int ret; 803 804 mutex_enter(&udf_node->node_mutex); 805 /* wait until free */ 806 while (udf_node->i_flags & IN_LOCKED) { 807 ret = cv_timedwait(&udf_node->node_lock, &udf_node->node_mutex, hz/8); 808 /* TODO check if we should return error; abort */ 809 if (ret == EWOULDBLOCK) { 810 DPRINTF(LOCKING, ( "udf_lock_node: udf_node %p would block " 811 "wanted at %s:%d, previously locked at %s:%d\n", 812 udf_node, fname, lineno, 813 udf_node->lock_fname, udf_node->lock_lineno)); 814 } 815 } 816 /* grab */ 817 udf_node->i_flags |= IN_LOCKED | flag; 818 /* debug */ 819 udf_node->lock_fname = fname; 820 udf_node->lock_lineno = lineno; 821 822 mutex_exit(&udf_node->node_mutex); 823 } 824 825 826 void 827 udf_unlock_node(struct udf_node *udf_node, int flag) 828 { 829 mutex_enter(&udf_node->node_mutex); 830 udf_node->i_flags &= ~(IN_LOCKED | flag); 831 cv_broadcast(&udf_node->node_lock); 832 mutex_exit(&udf_node->node_mutex); 833 } 834 835 836 /* --------------------------------------------------------------------- */ 837 838 static int 839 udf_read_anchor(struct udf_mount *ump, uint32_t sector, struct anchor_vdp **dst) 840 { 841 int error; 842 843 error = udf_read_phys_dscr(ump, sector, M_UDFVOLD, 844 (union dscrptr **) dst); 845 if (!error) { 846 /* blank terminator blocks are not allowed here */ 847 if (*dst == NULL) 848 return ENOENT; 849 if (udf_rw16((*dst)->tag.id) != TAGID_ANCHOR) { 850 error = ENOENT; 851 free(*dst, M_UDFVOLD); 852 *dst = NULL; 853 DPRINTF(VOLUMES, ("Not an anchor\n")); 854 } 855 } 856 857 return error; 858 } 859 860 861 int 862 udf_read_anchors(struct udf_mount *ump) 863 { 864 struct udf_args *args = &ump->mount_args; 865 struct mmc_trackinfo first_track; 866 struct mmc_trackinfo second_track; 867 struct mmc_trackinfo last_track; 868 struct anchor_vdp **anchorsp; 869 uint32_t track_start; 870 uint32_t track_end; 871 uint32_t positions[4]; 872 int first_tracknr, last_tracknr; 873 int error, anch, ok, first_anchor; 874 875 /* search the first and last track of the specified session */ 876 error = udf_search_tracks(ump, args, &first_tracknr, &last_tracknr); 877 if (!error) { 878 first_track.tracknr = first_tracknr; 879 error = udf_update_trackinfo(ump, &first_track); 880 } 881 if (!error) { 882 last_track.tracknr = last_tracknr; 883 error = udf_update_trackinfo(ump, &last_track); 884 } 885 if ((!error) && (first_tracknr != last_tracknr)) { 886 second_track.tracknr = first_tracknr+1; 887 error = udf_update_trackinfo(ump, &second_track); 888 } 889 if (error) { 890 printf("UDF mount: reading disc geometry failed\n"); 891 return 0; 892 } 893 894 track_start = first_track.track_start; 895 896 /* `end' is not as straitforward as start. */ 897 track_end = last_track.track_start 898 + last_track.track_size - last_track.free_blocks - 1; 899 900 if (ump->discinfo.mmc_cur & MMC_CAP_SEQUENTIAL) { 901 /* end of track is not straitforward here */ 902 if (last_track.flags & MMC_TRACKINFO_LRA_VALID) 903 track_end = last_track.last_recorded; 904 else if (last_track.flags & MMC_TRACKINFO_NWA_VALID) 905 track_end = last_track.next_writable 906 - ump->discinfo.link_block_penalty; 907 } 908 909 /* its no use reading a blank track */ 910 first_anchor = 0; 911 if (first_track.flags & MMC_TRACKINFO_BLANK) 912 first_anchor = 1; 913 914 /* get our packet size */ 915 ump->packet_size = first_track.packet_size; 916 if (first_track.flags & MMC_TRACKINFO_BLANK) 917 ump->packet_size = second_track.packet_size; 918 919 if (ump->packet_size <= 1) { 920 /* take max, but not bigger than 64 */ 921 ump->packet_size = MAXPHYS / ump->discinfo.sector_size; 922 ump->packet_size = MIN(ump->packet_size, 64); 923 } 924 KASSERT(ump->packet_size >= 1); 925 926 /* read anchors start+256, start+512, end-256, end */ 927 positions[0] = track_start+256; 928 positions[1] = track_end-256; 929 positions[2] = track_end; 930 positions[3] = track_start+512; /* [UDF 2.60/6.11.2] */ 931 /* XXX shouldn't +512 be prefered above +256 for compat with Roxio CD */ 932 933 ok = 0; 934 anchorsp = ump->anchors; 935 for (anch = first_anchor; anch < 4; anch++) { 936 DPRINTF(VOLUMES, ("Read anchor %d at sector %d\n", anch, 937 positions[anch])); 938 error = udf_read_anchor(ump, positions[anch], anchorsp); 939 if (!error) { 940 anchorsp++; 941 ok++; 942 } 943 } 944 945 /* VATs are only recorded on sequential media, but initialise */ 946 ump->first_possible_vat_location = track_start + 2; 947 ump->last_possible_vat_location = track_end; 948 949 return ok; 950 } 951 952 /* --------------------------------------------------------------------- */ 953 954 int 955 udf_get_c_type(struct udf_node *udf_node) 956 { 957 int isdir, what; 958 959 isdir = (udf_node->vnode->v_type == VDIR); 960 what = isdir ? UDF_C_FIDS : UDF_C_USERDATA; 961 962 if (udf_node->ump) 963 if (udf_node == udf_node->ump->metadatabitmap_node) 964 what = UDF_C_METADATA_SBM; 965 966 return what; 967 } 968 969 970 int 971 udf_get_record_vpart(struct udf_mount *ump, int udf_c_type) 972 { 973 int vpart_num; 974 975 vpart_num = ump->data_part; 976 if (udf_c_type == UDF_C_NODE) 977 vpart_num = ump->node_part; 978 if (udf_c_type == UDF_C_FIDS) 979 vpart_num = ump->fids_part; 980 981 return vpart_num; 982 } 983 984 985 /* 986 * BUGALERT: some rogue implementations use random physical partition 987 * numbers to break other implementations so lookup the number. 988 */ 989 990 static uint16_t 991 udf_find_raw_phys(struct udf_mount *ump, uint16_t raw_phys_part) 992 { 993 struct part_desc *part; 994 uint16_t phys_part; 995 996 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 997 part = ump->partitions[phys_part]; 998 if (part == NULL) 999 break; 1000 if (udf_rw16(part->part_num) == raw_phys_part) 1001 break; 1002 } 1003 return phys_part; 1004 } 1005 1006 /* --------------------------------------------------------------------- */ 1007 1008 /* we dont try to be smart; we just record the parts */ 1009 #define UDF_UPDATE_DSCR(name, dscr) \ 1010 if (name) \ 1011 free(name, M_UDFVOLD); \ 1012 name = dscr; 1013 1014 static int 1015 udf_process_vds_descriptor(struct udf_mount *ump, union dscrptr *dscr) 1016 { 1017 uint16_t phys_part, raw_phys_part; 1018 1019 DPRINTF(VOLUMES, ("\tprocessing VDS descr %d\n", 1020 udf_rw16(dscr->tag.id))); 1021 switch (udf_rw16(dscr->tag.id)) { 1022 case TAGID_PRI_VOL : /* primary partition */ 1023 UDF_UPDATE_DSCR(ump->primary_vol, &dscr->pvd); 1024 break; 1025 case TAGID_LOGVOL : /* logical volume */ 1026 UDF_UPDATE_DSCR(ump->logical_vol, &dscr->lvd); 1027 break; 1028 case TAGID_UNALLOC_SPACE : /* unallocated space */ 1029 UDF_UPDATE_DSCR(ump->unallocated, &dscr->usd); 1030 break; 1031 case TAGID_IMP_VOL : /* implementation */ 1032 /* XXX do we care about multiple impl. descr ? */ 1033 UDF_UPDATE_DSCR(ump->implementation, &dscr->ivd); 1034 break; 1035 case TAGID_PARTITION : /* physical partition */ 1036 /* not much use if its not allocated */ 1037 if ((udf_rw16(dscr->pd.flags) & UDF_PART_FLAG_ALLOCATED) == 0) { 1038 free(dscr, M_UDFVOLD); 1039 break; 1040 } 1041 1042 /* 1043 * BUGALERT: some rogue implementations use random physical 1044 * partition numbers to break other implementations so lookup 1045 * the number. 1046 */ 1047 raw_phys_part = udf_rw16(dscr->pd.part_num); 1048 phys_part = udf_find_raw_phys(ump, raw_phys_part); 1049 1050 if (phys_part == UDF_PARTITIONS) { 1051 free(dscr, M_UDFVOLD); 1052 return EINVAL; 1053 } 1054 1055 UDF_UPDATE_DSCR(ump->partitions[phys_part], &dscr->pd); 1056 break; 1057 case TAGID_VOL : /* volume space extender; rare */ 1058 DPRINTF(VOLUMES, ("VDS extender ignored\n")); 1059 free(dscr, M_UDFVOLD); 1060 break; 1061 default : 1062 DPRINTF(VOLUMES, ("Unhandled VDS type %d\n", 1063 udf_rw16(dscr->tag.id))); 1064 free(dscr, M_UDFVOLD); 1065 } 1066 1067 return 0; 1068 } 1069 #undef UDF_UPDATE_DSCR 1070 1071 /* --------------------------------------------------------------------- */ 1072 1073 static int 1074 udf_read_vds_extent(struct udf_mount *ump, uint32_t loc, uint32_t len) 1075 { 1076 union dscrptr *dscr; 1077 uint32_t sector_size, dscr_size; 1078 int error; 1079 1080 sector_size = ump->discinfo.sector_size; 1081 1082 /* loc is sectornr, len is in bytes */ 1083 error = EIO; 1084 while (len) { 1085 error = udf_read_phys_dscr(ump, loc, M_UDFVOLD, &dscr); 1086 if (error) 1087 return error; 1088 1089 /* blank block is a terminator */ 1090 if (dscr == NULL) 1091 return 0; 1092 1093 /* TERM descriptor is a terminator */ 1094 if (udf_rw16(dscr->tag.id) == TAGID_TERM) { 1095 free(dscr, M_UDFVOLD); 1096 return 0; 1097 } 1098 1099 /* process all others */ 1100 dscr_size = udf_tagsize(dscr, sector_size); 1101 error = udf_process_vds_descriptor(ump, dscr); 1102 if (error) { 1103 free(dscr, M_UDFVOLD); 1104 break; 1105 } 1106 assert((dscr_size % sector_size) == 0); 1107 1108 len -= dscr_size; 1109 loc += dscr_size / sector_size; 1110 } 1111 1112 return error; 1113 } 1114 1115 1116 int 1117 udf_read_vds_space(struct udf_mount *ump) 1118 { 1119 /* struct udf_args *args = &ump->mount_args; */ 1120 struct anchor_vdp *anchor, *anchor2; 1121 size_t size; 1122 uint32_t main_loc, main_len; 1123 uint32_t reserve_loc, reserve_len; 1124 int error; 1125 1126 /* 1127 * read in VDS space provided by the anchors; if one descriptor read 1128 * fails, try the mirror sector. 1129 * 1130 * check if 2nd anchor is different from 1st; if so, go for 2nd. This 1131 * avoids the `compatibility features' of DirectCD that may confuse 1132 * stuff completely. 1133 */ 1134 1135 anchor = ump->anchors[0]; 1136 anchor2 = ump->anchors[1]; 1137 assert(anchor); 1138 1139 if (anchor2) { 1140 size = sizeof(struct extent_ad); 1141 if (memcmp(&anchor->main_vds_ex, &anchor2->main_vds_ex, size)) 1142 anchor = anchor2; 1143 /* reserve is specified to be a literal copy of main */ 1144 } 1145 1146 main_loc = udf_rw32(anchor->main_vds_ex.loc); 1147 main_len = udf_rw32(anchor->main_vds_ex.len); 1148 1149 reserve_loc = udf_rw32(anchor->reserve_vds_ex.loc); 1150 reserve_len = udf_rw32(anchor->reserve_vds_ex.len); 1151 1152 error = udf_read_vds_extent(ump, main_loc, main_len); 1153 if (error) { 1154 printf("UDF mount: reading in reserve VDS extent\n"); 1155 error = udf_read_vds_extent(ump, reserve_loc, reserve_len); 1156 } 1157 1158 return error; 1159 } 1160 1161 /* --------------------------------------------------------------------- */ 1162 1163 /* 1164 * Read in the logical volume integrity sequence pointed to by our logical 1165 * volume descriptor. Its a sequence that can be extended using fields in the 1166 * integrity descriptor itself. On sequential media only one is found, on 1167 * rewritable media a sequence of descriptors can be found as a form of 1168 * history keeping and on non sequential write-once media the chain is vital 1169 * to allow more and more descriptors to be written. The last descriptor 1170 * written in an extent needs to claim space for a new extent. 1171 */ 1172 1173 static int 1174 udf_retrieve_lvint(struct udf_mount *ump) 1175 { 1176 union dscrptr *dscr; 1177 struct logvol_int_desc *lvint; 1178 struct udf_lvintq *trace; 1179 uint32_t lb_size, lbnum, len; 1180 int dscr_type, error, trace_len; 1181 1182 lb_size = udf_rw32(ump->logical_vol->lb_size); 1183 len = udf_rw32(ump->logical_vol->integrity_seq_loc.len); 1184 lbnum = udf_rw32(ump->logical_vol->integrity_seq_loc.loc); 1185 1186 /* clean trace */ 1187 memset(ump->lvint_trace, 0, 1188 UDF_LVDINT_SEGMENTS * sizeof(struct udf_lvintq)); 1189 1190 trace_len = 0; 1191 trace = ump->lvint_trace; 1192 trace->start = lbnum; 1193 trace->end = lbnum + len/lb_size; 1194 trace->pos = 0; 1195 trace->wpos = 0; 1196 1197 lvint = NULL; 1198 dscr = NULL; 1199 error = 0; 1200 while (len) { 1201 trace->pos = lbnum - trace->start; 1202 trace->wpos = trace->pos + 1; 1203 1204 /* read in our integrity descriptor */ 1205 error = udf_read_phys_dscr(ump, lbnum, M_UDFVOLD, &dscr); 1206 if (!error) { 1207 if (dscr == NULL) { 1208 trace->wpos = trace->pos; 1209 break; /* empty terminates */ 1210 } 1211 dscr_type = udf_rw16(dscr->tag.id); 1212 if (dscr_type == TAGID_TERM) { 1213 trace->wpos = trace->pos; 1214 break; /* clean terminator */ 1215 } 1216 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1217 /* fatal... corrupt disc */ 1218 error = ENOENT; 1219 break; 1220 } 1221 if (lvint) 1222 free(lvint, M_UDFVOLD); 1223 lvint = &dscr->lvid; 1224 dscr = NULL; 1225 } /* else hope for the best... maybe the next is ok */ 1226 1227 DPRINTFIF(VOLUMES, lvint, ("logvol integrity read, state %s\n", 1228 udf_rw32(lvint->integrity_type) ? "CLOSED" : "OPEN")); 1229 1230 /* proceed sequential */ 1231 lbnum += 1; 1232 len -= lb_size; 1233 1234 /* are we linking to a new piece? */ 1235 if (dscr && lvint->next_extent.len) { 1236 len = udf_rw32(lvint->next_extent.len); 1237 lbnum = udf_rw32(lvint->next_extent.loc); 1238 1239 if (trace_len >= UDF_LVDINT_SEGMENTS-1) { 1240 /* IEK! segment link full... */ 1241 DPRINTF(VOLUMES, ("lvdint segments full\n")); 1242 error = EINVAL; 1243 } else { 1244 trace++; 1245 trace_len++; 1246 1247 trace->start = lbnum; 1248 trace->end = lbnum + len/lb_size; 1249 trace->pos = 0; 1250 trace->wpos = 0; 1251 } 1252 } 1253 } 1254 1255 /* clean up the mess, esp. when there is an error */ 1256 if (dscr) 1257 free(dscr, M_UDFVOLD); 1258 1259 if (error && lvint) { 1260 free(lvint, M_UDFVOLD); 1261 lvint = NULL; 1262 } 1263 1264 if (!lvint) 1265 error = ENOENT; 1266 1267 ump->logvol_integrity = lvint; 1268 return error; 1269 } 1270 1271 1272 static int 1273 udf_loose_lvint_history(struct udf_mount *ump) 1274 { 1275 union dscrptr **bufs, *dscr, *last_dscr; 1276 struct udf_lvintq *trace, *in_trace, *out_trace; 1277 struct logvol_int_desc *lvint; 1278 uint32_t in_ext, in_pos, in_len; 1279 uint32_t out_ext, out_wpos, out_len; 1280 uint32_t lb_num; 1281 uint32_t len, start; 1282 int ext, sumext, extlen, cnt, cpy_len, dscr_type; 1283 int losing; 1284 int error; 1285 1286 DPRINTF(VOLUMES, ("need to lose some lvint history\n")); 1287 1288 /* search smallest extent */ 1289 trace = &ump->lvint_trace[0]; 1290 sumext = trace->end - trace->start; 1291 for (ext = 1; ext < UDF_LVDINT_SEGMENTS; ext++) { 1292 trace = &ump->lvint_trace[ext]; 1293 extlen = trace->end - trace->start; 1294 if (extlen == 0) 1295 break; 1296 sumext += extlen; 1297 } 1298 1299 /* just one element? its not legal but be bug compatible */ 1300 if (sumext == 1) { 1301 /* overwrite the only entry */ 1302 DPRINTF(VOLUMES, ("\tLinux bugcompat overwriting sole entry\n")); 1303 trace = &ump->lvint_trace[0]; 1304 trace->wpos = 0; 1305 return 0; 1306 } 1307 1308 losing = MIN(sumext, UDF_LVINT_LOSSAGE); 1309 1310 /* no sense wiping too much */ 1311 if (sumext == UDF_LVINT_LOSSAGE) 1312 losing = UDF_LVINT_LOSSAGE/2; 1313 1314 DPRINTF(VOLUMES, ("\tlosing %d entries\n", losing)); 1315 1316 /* get buffer for pieces */ 1317 bufs = malloc(UDF_LVDINT_SEGMENTS * sizeof(void *), M_TEMP, M_WAITOK); 1318 1319 in_ext = 0; 1320 in_pos = losing; 1321 in_trace = &ump->lvint_trace[in_ext]; 1322 in_len = in_trace->end - in_trace->start; 1323 out_ext = 0; 1324 out_wpos = 0; 1325 out_trace = &ump->lvint_trace[out_ext]; 1326 out_len = out_trace->end - out_trace->start; 1327 1328 last_dscr = NULL; 1329 for(;;) { 1330 out_trace->pos = out_wpos; 1331 out_trace->wpos = out_trace->pos; 1332 if (in_pos >= in_len) { 1333 in_ext++; 1334 in_pos = 0; 1335 in_trace = &ump->lvint_trace[in_ext]; 1336 in_len = in_trace->end - in_trace->start; 1337 } 1338 if (out_wpos >= out_len) { 1339 out_ext++; 1340 out_wpos = 0; 1341 out_trace = &ump->lvint_trace[out_ext]; 1342 out_len = out_trace->end - out_trace->start; 1343 } 1344 /* copy overlap contents */ 1345 cpy_len = MIN(in_len - in_pos, out_len - out_wpos); 1346 cpy_len = MIN(cpy_len, in_len - in_trace->pos); 1347 if (cpy_len == 0) 1348 break; 1349 1350 /* copy */ 1351 DPRINTF(VOLUMES, ("\treading %d lvid descriptors\n", cpy_len)); 1352 for (cnt = 0; cnt < cpy_len; cnt++) { 1353 /* read in our integrity descriptor */ 1354 lb_num = in_trace->start + in_pos + cnt; 1355 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, 1356 &dscr); 1357 if (error) { 1358 /* copy last one */ 1359 dscr = last_dscr; 1360 } 1361 bufs[cnt] = dscr; 1362 if (!error) { 1363 if (dscr == NULL) { 1364 out_trace->pos = out_wpos + cnt; 1365 out_trace->wpos = out_trace->pos; 1366 break; /* empty terminates */ 1367 } 1368 dscr_type = udf_rw16(dscr->tag.id); 1369 if (dscr_type == TAGID_TERM) { 1370 out_trace->pos = out_wpos + cnt; 1371 out_trace->wpos = out_trace->pos; 1372 break; /* clean terminator */ 1373 } 1374 if (dscr_type != TAGID_LOGVOL_INTEGRITY) { 1375 panic( "UDF integrity sequence " 1376 "corrupted while mounted!\n"); 1377 } 1378 last_dscr = dscr; 1379 } 1380 } 1381 1382 /* patch up if first entry was on error */ 1383 if (bufs[0] == NULL) { 1384 for (cnt = 0; cnt < cpy_len; cnt++) 1385 if (bufs[cnt] != NULL) 1386 break; 1387 last_dscr = bufs[cnt]; 1388 for (; cnt > 0; cnt--) { 1389 bufs[cnt] = last_dscr; 1390 } 1391 } 1392 1393 /* glue + write out */ 1394 DPRINTF(VOLUMES, ("\twriting %d lvid descriptors\n", cpy_len)); 1395 for (cnt = 0; cnt < cpy_len; cnt++) { 1396 lb_num = out_trace->start + out_wpos + cnt; 1397 lvint = &bufs[cnt]->lvid; 1398 1399 /* set continuation */ 1400 len = 0; 1401 start = 0; 1402 if (out_wpos + cnt == out_len) { 1403 /* get continuation */ 1404 trace = &ump->lvint_trace[out_ext+1]; 1405 len = trace->end - trace->start; 1406 start = trace->start; 1407 } 1408 lvint->next_extent.len = udf_rw32(len); 1409 lvint->next_extent.loc = udf_rw32(start); 1410 1411 lb_num = trace->start + trace->wpos; 1412 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1413 bufs[cnt], lb_num, lb_num); 1414 DPRINTFIF(VOLUMES, error, 1415 ("error writing lvint lb_num\n")); 1416 } 1417 1418 /* free non repeating descriptors */ 1419 last_dscr = NULL; 1420 for (cnt = 0; cnt < cpy_len; cnt++) { 1421 if (bufs[cnt] != last_dscr) 1422 free(bufs[cnt], M_UDFVOLD); 1423 last_dscr = bufs[cnt]; 1424 } 1425 1426 /* advance */ 1427 in_pos += cpy_len; 1428 out_wpos += cpy_len; 1429 } 1430 1431 free(bufs, M_TEMP); 1432 1433 return 0; 1434 } 1435 1436 1437 static int 1438 udf_writeout_lvint(struct udf_mount *ump, int lvflag) 1439 { 1440 struct udf_lvintq *trace; 1441 struct timeval now_v; 1442 struct timespec now_s; 1443 uint32_t sector; 1444 int logvol_integrity; 1445 int space, error; 1446 1447 DPRINTF(VOLUMES, ("writing out logvol integrity descriptor\n")); 1448 1449 /* get free space in last chunk */ 1450 trace = ump->lvint_trace; 1451 while (trace->wpos > (trace->end - trace->start)) { 1452 DPRINTF(VOLUMES, ("skip : start = %d, end = %d, pos = %d, " 1453 "wpos = %d\n", trace->start, trace->end, 1454 trace->pos, trace->wpos)); 1455 trace++; 1456 } 1457 1458 /* check if there is space to append */ 1459 space = (trace->end - trace->start) - trace->wpos; 1460 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1461 "space = %d\n", trace->start, trace->end, trace->pos, 1462 trace->wpos, space)); 1463 1464 /* get state */ 1465 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 1466 if (logvol_integrity == UDF_INTEGRITY_CLOSED) { 1467 if ((space < 3) && (lvflag & UDF_APPENDONLY_LVINT)) { 1468 /* TODO extent LVINT space if possible */ 1469 return EROFS; 1470 } 1471 } 1472 1473 if (space < 1) { 1474 if (lvflag & UDF_APPENDONLY_LVINT) 1475 return EROFS; 1476 1477 /* loose history by re-writing extents */ 1478 error = udf_loose_lvint_history(ump); 1479 if (error) 1480 return error; 1481 1482 trace = ump->lvint_trace; 1483 while (trace->wpos > (trace->end - trace->start)) 1484 trace++; 1485 space = (trace->end - trace->start) - trace->wpos; 1486 DPRINTF(VOLUMES, ("new try: write start = %d, end = %d, " 1487 "pos = %d, wpos = %d, " 1488 "space = %d\n", trace->start, trace->end, 1489 trace->pos, trace->wpos, space)); 1490 } 1491 1492 /* update our integrity descriptor to identify us and timestamp it */ 1493 DPRINTF(VOLUMES, ("updating integrity descriptor\n")); 1494 microtime(&now_v); 1495 TIMEVAL_TO_TIMESPEC(&now_v, &now_s); 1496 udf_timespec_to_timestamp(&now_s, &ump->logvol_integrity->time); 1497 udf_set_regid(&ump->logvol_info->impl_id, IMPL_NAME); 1498 udf_add_impl_regid(ump, &ump->logvol_info->impl_id); 1499 1500 /* writeout integrity descriptor */ 1501 sector = trace->start + trace->wpos; 1502 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1503 (union dscrptr *) ump->logvol_integrity, 1504 sector, sector); 1505 DPRINTF(VOLUMES, ("writeout lvint : error = %d\n", error)); 1506 if (error) 1507 return error; 1508 1509 /* advance write position */ 1510 trace->wpos++; space--; 1511 if (space >= 1) { 1512 /* append terminator */ 1513 sector = trace->start + trace->wpos; 1514 error = udf_write_terminator(ump, sector); 1515 1516 DPRINTF(VOLUMES, ("write terminator : error = %d\n", error)); 1517 } 1518 1519 space = (trace->end - trace->start) - trace->wpos; 1520 DPRINTF(VOLUMES, ("write start = %d, end = %d, pos = %d, wpos = %d, " 1521 "space = %d\n", trace->start, trace->end, trace->pos, 1522 trace->wpos, space)); 1523 DPRINTF(VOLUMES, ("finished writing out logvol integrity descriptor " 1524 "successfull\n")); 1525 1526 return error; 1527 } 1528 1529 /* --------------------------------------------------------------------- */ 1530 1531 static int 1532 udf_read_physical_partition_spacetables(struct udf_mount *ump) 1533 { 1534 union dscrptr *dscr; 1535 /* struct udf_args *args = &ump->mount_args; */ 1536 struct part_desc *partd; 1537 struct part_hdr_desc *parthdr; 1538 struct udf_bitmap *bitmap; 1539 uint32_t phys_part; 1540 uint32_t lb_num, len; 1541 int error, dscr_type; 1542 1543 /* unallocated space map */ 1544 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1545 partd = ump->partitions[phys_part]; 1546 if (partd == NULL) 1547 continue; 1548 parthdr = &partd->_impl_use.part_hdr; 1549 1550 lb_num = udf_rw32(partd->start_loc); 1551 lb_num += udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1552 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1553 if (len == 0) 1554 continue; 1555 1556 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1557 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1558 if (!error && dscr) { 1559 /* analyse */ 1560 dscr_type = udf_rw16(dscr->tag.id); 1561 if (dscr_type == TAGID_SPACE_BITMAP) { 1562 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1563 ump->part_unalloc_dscr[phys_part] = &dscr->sbd; 1564 1565 /* fill in ump->part_unalloc_bits */ 1566 bitmap = &ump->part_unalloc_bits[phys_part]; 1567 bitmap->blob = (uint8_t *) dscr; 1568 bitmap->bits = dscr->sbd.data; 1569 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1570 bitmap->pages = NULL; /* TODO */ 1571 bitmap->data_pos = 0; 1572 bitmap->metadata_pos = 0; 1573 } else { 1574 free(dscr, M_UDFVOLD); 1575 1576 printf( "UDF mount: error reading unallocated " 1577 "space bitmap\n"); 1578 return EROFS; 1579 } 1580 } else { 1581 /* blank not allowed */ 1582 printf("UDF mount: blank unallocated space bitmap\n"); 1583 return EROFS; 1584 } 1585 } 1586 1587 /* unallocated space table (not supported) */ 1588 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1589 partd = ump->partitions[phys_part]; 1590 if (partd == NULL) 1591 continue; 1592 parthdr = &partd->_impl_use.part_hdr; 1593 1594 len = udf_rw32(parthdr->unalloc_space_table.len); 1595 if (len) { 1596 printf("UDF mount: space tables not supported\n"); 1597 return EROFS; 1598 } 1599 } 1600 1601 /* freed space map */ 1602 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1603 partd = ump->partitions[phys_part]; 1604 if (partd == NULL) 1605 continue; 1606 parthdr = &partd->_impl_use.part_hdr; 1607 1608 /* freed space map */ 1609 lb_num = udf_rw32(partd->start_loc); 1610 lb_num += udf_rw32(parthdr->freed_space_bitmap.lb_num); 1611 len = udf_rw32(parthdr->freed_space_bitmap.len); 1612 if (len == 0) 1613 continue; 1614 1615 DPRINTF(VOLUMES, ("Read unalloc. space bitmap %d\n", lb_num)); 1616 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 1617 if (!error && dscr) { 1618 /* analyse */ 1619 dscr_type = udf_rw16(dscr->tag.id); 1620 if (dscr_type == TAGID_SPACE_BITMAP) { 1621 DPRINTF(VOLUMES, ("Accepting space bitmap\n")); 1622 ump->part_freed_dscr[phys_part] = &dscr->sbd; 1623 1624 /* fill in ump->part_freed_bits */ 1625 bitmap = &ump->part_unalloc_bits[phys_part]; 1626 bitmap->blob = (uint8_t *) dscr; 1627 bitmap->bits = dscr->sbd.data; 1628 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1629 bitmap->pages = NULL; /* TODO */ 1630 bitmap->data_pos = 0; 1631 bitmap->metadata_pos = 0; 1632 } else { 1633 free(dscr, M_UDFVOLD); 1634 1635 printf( "UDF mount: error reading freed " 1636 "space bitmap\n"); 1637 return EROFS; 1638 } 1639 } else { 1640 /* blank not allowed */ 1641 printf("UDF mount: blank freed space bitmap\n"); 1642 return EROFS; 1643 } 1644 } 1645 1646 /* freed space table (not supported) */ 1647 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1648 partd = ump->partitions[phys_part]; 1649 if (partd == NULL) 1650 continue; 1651 parthdr = &partd->_impl_use.part_hdr; 1652 1653 len = udf_rw32(parthdr->freed_space_table.len); 1654 if (len) { 1655 printf("UDF mount: space tables not supported\n"); 1656 return EROFS; 1657 } 1658 } 1659 1660 return 0; 1661 } 1662 1663 1664 /* TODO implement async writeout */ 1665 int 1666 udf_write_physical_partition_spacetables(struct udf_mount *ump, int waitfor) 1667 { 1668 union dscrptr *dscr; 1669 /* struct udf_args *args = &ump->mount_args; */ 1670 struct part_desc *partd; 1671 struct part_hdr_desc *parthdr; 1672 uint32_t phys_part; 1673 uint32_t lb_num, len, ptov; 1674 int error_all, error; 1675 1676 error_all = 0; 1677 /* unallocated space map */ 1678 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1679 partd = ump->partitions[phys_part]; 1680 if (partd == NULL) 1681 continue; 1682 parthdr = &partd->_impl_use.part_hdr; 1683 1684 ptov = udf_rw32(partd->start_loc); 1685 lb_num = udf_rw32(parthdr->unalloc_space_bitmap.lb_num); 1686 len = udf_rw32(parthdr->unalloc_space_bitmap.len); 1687 if (len == 0) 1688 continue; 1689 1690 DPRINTF(VOLUMES, ("Write unalloc. space bitmap %d\n", 1691 lb_num + ptov)); 1692 dscr = (union dscrptr *) ump->part_unalloc_dscr[phys_part]; 1693 1694 /* force a sane minimum for descriptors CRC length */ 1695 /* see UDF 2.3.1.2 and 2.3.8.1 */ 1696 KASSERT(udf_rw16(dscr->sbd.tag.id) == TAGID_SPACE_BITMAP); 1697 if (udf_rw16(dscr->sbd.tag.desc_crc_len) == 0) 1698 dscr->sbd.tag.desc_crc_len = udf_rw16(8); 1699 1700 /* write out space bitmap */ 1701 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1702 (union dscrptr *) dscr, 1703 ptov + lb_num, lb_num); 1704 if (error) { 1705 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1706 error_all = error; 1707 } 1708 } 1709 1710 /* freed space map */ 1711 for (phys_part = 0; phys_part < UDF_PARTITIONS; phys_part++) { 1712 partd = ump->partitions[phys_part]; 1713 if (partd == NULL) 1714 continue; 1715 parthdr = &partd->_impl_use.part_hdr; 1716 1717 /* freed space map */ 1718 ptov = udf_rw32(partd->start_loc); 1719 lb_num = udf_rw32(parthdr->freed_space_bitmap.lb_num); 1720 len = udf_rw32(parthdr->freed_space_bitmap.len); 1721 if (len == 0) 1722 continue; 1723 1724 DPRINTF(VOLUMES, ("Write freed space bitmap %d\n", 1725 lb_num + ptov)); 1726 dscr = (union dscrptr *) ump->part_freed_dscr[phys_part]; 1727 1728 /* force a sane minimum for descriptors CRC length */ 1729 /* see UDF 2.3.1.2 and 2.3.8.1 */ 1730 KASSERT(udf_rw16(dscr->sbd.tag.id) == TAGID_SPACE_BITMAP); 1731 if (udf_rw16(dscr->sbd.tag.desc_crc_len) == 0) 1732 dscr->sbd.tag.desc_crc_len = udf_rw16(8); 1733 1734 /* write out space bitmap */ 1735 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 1736 (union dscrptr *) dscr, 1737 ptov + lb_num, lb_num); 1738 if (error) { 1739 DPRINTF(VOLUMES, ("\tfailed!! (error %d)\n", error)); 1740 error_all = error; 1741 } 1742 } 1743 1744 return error_all; 1745 } 1746 1747 1748 static int 1749 udf_read_metadata_partition_spacetable(struct udf_mount *ump) 1750 { 1751 struct udf_node *bitmap_node; 1752 union dscrptr *dscr; 1753 struct udf_bitmap *bitmap; 1754 uint64_t inflen; 1755 int error, dscr_type; 1756 1757 bitmap_node = ump->metadatabitmap_node; 1758 1759 /* only read in when metadata bitmap node is read in */ 1760 if (bitmap_node == NULL) 1761 return 0; 1762 1763 if (bitmap_node->fe) { 1764 inflen = udf_rw64(bitmap_node->fe->inf_len); 1765 } else { 1766 KASSERT(bitmap_node->efe); 1767 inflen = udf_rw64(bitmap_node->efe->inf_len); 1768 } 1769 1770 DPRINTF(VOLUMES, ("Reading metadata space bitmap for " 1771 "%"PRIu64" bytes\n", inflen)); 1772 1773 /* allocate space for bitmap */ 1774 dscr = malloc(inflen, M_UDFVOLD, M_CANFAIL | M_WAITOK); 1775 if (!dscr) 1776 return ENOMEM; 1777 1778 /* set vnode type to regular file or we can't read from it! */ 1779 bitmap_node->vnode->v_type = VREG; 1780 1781 /* read in complete metadata bitmap file */ 1782 error = vn_rdwr(UIO_READ, bitmap_node->vnode, 1783 dscr, 1784 inflen, 0, 1785 UIO_SYSSPACE, 1786 IO_SYNC | IO_ALTSEMANTICS, FSCRED, 1787 NULL, NULL); 1788 if (error) { 1789 DPRINTF(VOLUMES, ("Error reading metadata space bitmap\n")); 1790 goto errorout; 1791 } 1792 1793 /* analyse */ 1794 dscr_type = udf_rw16(dscr->tag.id); 1795 if (dscr_type == TAGID_SPACE_BITMAP) { 1796 DPRINTF(VOLUMES, ("Accepting metadata space bitmap\n")); 1797 ump->metadata_unalloc_dscr = &dscr->sbd; 1798 1799 /* fill in bitmap bits */ 1800 bitmap = &ump->metadata_unalloc_bits; 1801 bitmap->blob = (uint8_t *) dscr; 1802 bitmap->bits = dscr->sbd.data; 1803 bitmap->max_offset = udf_rw32(dscr->sbd.num_bits); 1804 bitmap->pages = NULL; /* TODO */ 1805 bitmap->data_pos = 0; 1806 bitmap->metadata_pos = 0; 1807 } else { 1808 DPRINTF(VOLUMES, ("No valid bitmap found!\n")); 1809 goto errorout; 1810 } 1811 1812 return 0; 1813 1814 errorout: 1815 free(dscr, M_UDFVOLD); 1816 printf( "UDF mount: error reading unallocated " 1817 "space bitmap for metadata partition\n"); 1818 return EROFS; 1819 } 1820 1821 1822 int 1823 udf_write_metadata_partition_spacetable(struct udf_mount *ump, int waitfor) 1824 { 1825 struct udf_node *bitmap_node; 1826 union dscrptr *dscr; 1827 uint64_t new_inflen; 1828 int dummy, error; 1829 1830 bitmap_node = ump->metadatabitmap_node; 1831 1832 /* only write out when metadata bitmap node is known */ 1833 if (bitmap_node == NULL) 1834 return 0; 1835 1836 if (!bitmap_node->fe) { 1837 KASSERT(bitmap_node->efe); 1838 } 1839 1840 /* reduce length to zero */ 1841 dscr = (union dscrptr *) ump->metadata_unalloc_dscr; 1842 new_inflen = udf_tagsize(dscr, 1); 1843 1844 DPRINTF(VOLUMES, ("Resize and write out metadata space bitmap " 1845 " for %"PRIu64" bytes\n", new_inflen)); 1846 1847 error = udf_resize_node(bitmap_node, new_inflen, &dummy); 1848 if (error) 1849 printf("Error resizing metadata space bitmap\n"); 1850 1851 error = vn_rdwr(UIO_WRITE, bitmap_node->vnode, 1852 dscr, 1853 new_inflen, 0, 1854 UIO_SYSSPACE, 1855 IO_ALTSEMANTICS, FSCRED, 1856 NULL, NULL); 1857 1858 bitmap_node->i_flags |= IN_MODIFIED; 1859 error = vflushbuf(bitmap_node->vnode, FSYNC_WAIT); 1860 if (error == 0) 1861 error = VOP_FSYNC(bitmap_node->vnode, 1862 FSCRED, FSYNC_WAIT, 0, 0); 1863 1864 if (error) 1865 printf( "Error writing out metadata partition unalloced " 1866 "space bitmap!\n"); 1867 1868 return error; 1869 } 1870 1871 1872 /* --------------------------------------------------------------------- */ 1873 1874 /* 1875 * Checks if ump's vds information is correct and complete 1876 */ 1877 1878 int 1879 udf_process_vds(struct udf_mount *ump) { 1880 union udf_pmap *mapping; 1881 /* struct udf_args *args = &ump->mount_args; */ 1882 struct logvol_int_desc *lvint; 1883 struct udf_logvol_info *lvinfo; 1884 uint32_t n_pm; 1885 uint8_t *pmap_pos; 1886 char *domain_name, *map_name; 1887 const char *check_name; 1888 char bits[128]; 1889 int pmap_stype, pmap_size; 1890 int pmap_type, log_part, phys_part, raw_phys_part, maps_on; 1891 int n_phys, n_virt, n_spar, n_meta; 1892 int len; 1893 1894 if (ump == NULL) 1895 return ENOENT; 1896 1897 /* we need at least an anchor (trivial, but for safety) */ 1898 if (ump->anchors[0] == NULL) 1899 return EINVAL; 1900 1901 /* we need at least one primary and one logical volume descriptor */ 1902 if ((ump->primary_vol == NULL) || (ump->logical_vol) == NULL) 1903 return EINVAL; 1904 1905 /* we need at least one partition descriptor */ 1906 if (ump->partitions[0] == NULL) 1907 return EINVAL; 1908 1909 /* check logical volume sector size verses device sector size */ 1910 if (udf_rw32(ump->logical_vol->lb_size) != ump->discinfo.sector_size) { 1911 printf("UDF mount: format violation, lb_size != sector size\n"); 1912 return EINVAL; 1913 } 1914 1915 /* check domain name */ 1916 domain_name = ump->logical_vol->domain_id.id; 1917 if (strncmp(domain_name, "*OSTA UDF Compliant", 20)) { 1918 printf("mount_udf: disc not OSTA UDF Compliant, aborting\n"); 1919 return EINVAL; 1920 } 1921 1922 /* retrieve logical volume integrity sequence */ 1923 (void)udf_retrieve_lvint(ump); 1924 1925 /* 1926 * We need at least one logvol integrity descriptor recorded. Note 1927 * that its OK to have an open logical volume integrity here. The VAT 1928 * will close/update the integrity. 1929 */ 1930 if (ump->logvol_integrity == NULL) 1931 return EINVAL; 1932 1933 /* process derived structures */ 1934 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1935 lvint = ump->logvol_integrity; 1936 lvinfo = (struct udf_logvol_info *) (&lvint->tables[2 * n_pm]); 1937 ump->logvol_info = lvinfo; 1938 1939 /* TODO check udf versions? */ 1940 1941 /* 1942 * check logvol mappings: effective virt->log partmap translation 1943 * check and recording of the mapping results. Saves expensive 1944 * strncmp() in tight places. 1945 */ 1946 DPRINTF(VOLUMES, ("checking logvol mappings\n")); 1947 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 1948 pmap_pos = ump->logical_vol->maps; 1949 1950 if (n_pm > UDF_PMAPS) { 1951 printf("UDF mount: too many mappings\n"); 1952 return EINVAL; 1953 } 1954 1955 /* count types and set partition numbers */ 1956 ump->data_part = ump->node_part = ump->fids_part = 0; 1957 n_phys = n_virt = n_spar = n_meta = 0; 1958 for (log_part = 0; log_part < n_pm; log_part++) { 1959 mapping = (union udf_pmap *) pmap_pos; 1960 pmap_stype = pmap_pos[0]; 1961 pmap_size = pmap_pos[1]; 1962 switch (pmap_stype) { 1963 case 1: /* physical mapping */ 1964 /* volseq = udf_rw16(mapping->pm1.vol_seq_num); */ 1965 raw_phys_part = udf_rw16(mapping->pm1.part_num); 1966 pmap_type = UDF_VTOP_TYPE_PHYS; 1967 n_phys++; 1968 ump->data_part = log_part; 1969 ump->node_part = log_part; 1970 ump->fids_part = log_part; 1971 break; 1972 case 2: /* virtual/sparable/meta mapping */ 1973 map_name = mapping->pm2.part_id.id; 1974 /* volseq = udf_rw16(mapping->pm2.vol_seq_num); */ 1975 raw_phys_part = udf_rw16(mapping->pm2.part_num); 1976 pmap_type = UDF_VTOP_TYPE_UNKNOWN; 1977 len = UDF_REGID_ID_SIZE; 1978 1979 check_name = "*UDF Virtual Partition"; 1980 if (strncmp(map_name, check_name, len) == 0) { 1981 pmap_type = UDF_VTOP_TYPE_VIRT; 1982 n_virt++; 1983 ump->node_part = log_part; 1984 break; 1985 } 1986 check_name = "*UDF Sparable Partition"; 1987 if (strncmp(map_name, check_name, len) == 0) { 1988 pmap_type = UDF_VTOP_TYPE_SPARABLE; 1989 n_spar++; 1990 ump->data_part = log_part; 1991 ump->node_part = log_part; 1992 ump->fids_part = log_part; 1993 break; 1994 } 1995 check_name = "*UDF Metadata Partition"; 1996 if (strncmp(map_name, check_name, len) == 0) { 1997 pmap_type = UDF_VTOP_TYPE_META; 1998 n_meta++; 1999 ump->node_part = log_part; 2000 ump->fids_part = log_part; 2001 break; 2002 } 2003 break; 2004 default: 2005 return EINVAL; 2006 } 2007 2008 /* 2009 * BUGALERT: some rogue implementations use random physical 2010 * partition numbers to break other implementations so lookup 2011 * the number. 2012 */ 2013 phys_part = udf_find_raw_phys(ump, raw_phys_part); 2014 2015 DPRINTF(VOLUMES, ("\t%d -> %d(%d) type %d\n", log_part, 2016 raw_phys_part, phys_part, pmap_type)); 2017 2018 if (phys_part == UDF_PARTITIONS) 2019 return EINVAL; 2020 if (pmap_type == UDF_VTOP_TYPE_UNKNOWN) 2021 return EINVAL; 2022 2023 ump->vtop [log_part] = phys_part; 2024 ump->vtop_tp[log_part] = pmap_type; 2025 2026 pmap_pos += pmap_size; 2027 } 2028 /* not winning the beauty contest */ 2029 ump->vtop_tp[UDF_VTOP_RAWPART] = UDF_VTOP_TYPE_RAW; 2030 2031 /* test some basic UDF assertions/requirements */ 2032 if ((n_virt > 1) || (n_spar > 1) || (n_meta > 1)) 2033 return EINVAL; 2034 2035 if (n_virt) { 2036 if ((n_phys == 0) || n_spar || n_meta) 2037 return EINVAL; 2038 } 2039 if (n_spar + n_phys == 0) 2040 return EINVAL; 2041 2042 /* select allocation type for each logical partition */ 2043 for (log_part = 0; log_part < n_pm; log_part++) { 2044 maps_on = ump->vtop[log_part]; 2045 switch (ump->vtop_tp[log_part]) { 2046 case UDF_VTOP_TYPE_PHYS : 2047 assert(maps_on == log_part); 2048 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 2049 break; 2050 case UDF_VTOP_TYPE_VIRT : 2051 ump->vtop_alloc[log_part] = UDF_ALLOC_VAT; 2052 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 2053 break; 2054 case UDF_VTOP_TYPE_SPARABLE : 2055 assert(maps_on == log_part); 2056 ump->vtop_alloc[log_part] = UDF_ALLOC_SPACEMAP; 2057 break; 2058 case UDF_VTOP_TYPE_META : 2059 ump->vtop_alloc[log_part] = UDF_ALLOC_METABITMAP; 2060 if (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE) { 2061 /* special case for UDF 2.60 */ 2062 ump->vtop_alloc[log_part] = UDF_ALLOC_METASEQUENTIAL; 2063 ump->vtop_alloc[maps_on] = UDF_ALLOC_SEQUENTIAL; 2064 } 2065 break; 2066 default: 2067 panic("bad alloction type in udf's ump->vtop\n"); 2068 } 2069 } 2070 2071 /* determine logical volume open/closure actions */ 2072 if (n_virt) { 2073 ump->lvopen = 0; 2074 if (ump->discinfo.last_session_state == MMC_STATE_EMPTY) 2075 ump->lvopen |= UDF_OPEN_SESSION ; 2076 ump->lvclose = UDF_WRITE_VAT; 2077 if (ump->mount_args.udfmflags & UDFMNT_CLOSESESSION) 2078 ump->lvclose |= UDF_CLOSE_SESSION; 2079 } else { 2080 /* `normal' rewritable or non sequential media */ 2081 ump->lvopen = UDF_WRITE_LVINT; 2082 ump->lvclose = UDF_WRITE_LVINT; 2083 if ((ump->discinfo.mmc_cur & MMC_CAP_REWRITABLE) == 0) 2084 ump->lvopen |= UDF_APPENDONLY_LVINT; 2085 if ((ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 2086 ump->lvopen &= ~UDF_APPENDONLY_LVINT; 2087 } 2088 2089 /* 2090 * Determine sheduler error behaviour. For virtual partitions, update 2091 * the trackinfo; for sparable partitions replace a whole block on the 2092 * sparable table. Allways requeue. 2093 */ 2094 ump->lvreadwrite = 0; 2095 if (n_virt) 2096 ump->lvreadwrite = UDF_UPDATE_TRACKINFO; 2097 if (n_spar) 2098 ump->lvreadwrite = UDF_REMAP_BLOCK; 2099 2100 /* 2101 * Select our sheduler 2102 */ 2103 ump->strategy = &udf_strat_rmw; 2104 if (n_virt || (ump->discinfo.mmc_cur & MMC_CAP_PSEUDOOVERWRITE)) 2105 ump->strategy = &udf_strat_sequential; 2106 if ((ump->discinfo.mmc_class == MMC_CLASS_DISC) || 2107 (ump->discinfo.mmc_class == MMC_CLASS_UNKN)) 2108 ump->strategy = &udf_strat_direct; 2109 if (n_spar) 2110 ump->strategy = &udf_strat_rmw; 2111 2112 #if 0 2113 /* read-only access won't benefit from the other shedulers */ 2114 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 2115 ump->strategy = &udf_strat_direct; 2116 #endif 2117 2118 /* print results */ 2119 DPRINTF(VOLUMES, ("\tdata partition %d\n", ump->data_part)); 2120 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->data_part])); 2121 DPRINTF(VOLUMES, ("\tnode partition %d\n", ump->node_part)); 2122 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->node_part])); 2123 DPRINTF(VOLUMES, ("\tfids partition %d\n", ump->fids_part)); 2124 DPRINTF(VOLUMES, ("\t\talloc scheme %d\n", ump->vtop_alloc[ump->fids_part])); 2125 2126 snprintb(bits, sizeof(bits), UDFLOGVOL_BITS, ump->lvopen); 2127 DPRINTF(VOLUMES, ("\tactions on logvol open %s\n", bits)); 2128 snprintb(bits, sizeof(bits), UDFLOGVOL_BITS, ump->lvclose); 2129 DPRINTF(VOLUMES, ("\tactions on logvol close %s\n", bits)); 2130 snprintb(bits, sizeof(bits), UDFONERROR_BITS, ump->lvreadwrite); 2131 DPRINTF(VOLUMES, ("\tactions on logvol errors %s\n", bits)); 2132 2133 DPRINTF(VOLUMES, ("\tselected sheduler `%s`\n", 2134 (ump->strategy == &udf_strat_direct) ? "Direct" : 2135 (ump->strategy == &udf_strat_sequential) ? "Sequential" : 2136 (ump->strategy == &udf_strat_rmw) ? "RMW" : "UNKNOWN!")); 2137 2138 /* signal its OK for now */ 2139 return 0; 2140 } 2141 2142 /* --------------------------------------------------------------------- */ 2143 2144 /* 2145 * Update logical volume name in all structures that keep a record of it. We 2146 * use memmove since each of them might be specified as a source. 2147 * 2148 * Note that it doesn't update the VAT structure! 2149 */ 2150 2151 static void 2152 udf_update_logvolname(struct udf_mount *ump, char *logvol_id) 2153 { 2154 struct logvol_desc *lvd = NULL; 2155 struct fileset_desc *fsd = NULL; 2156 struct udf_lv_info *lvi = NULL; 2157 2158 DPRINTF(VOLUMES, ("Updating logical volume name\n")); 2159 lvd = ump->logical_vol; 2160 fsd = ump->fileset_desc; 2161 if (ump->implementation) 2162 lvi = &ump->implementation->_impl_use.lv_info; 2163 2164 /* logvol's id might be specified as origional so use memmove here */ 2165 memmove(lvd->logvol_id, logvol_id, 128); 2166 if (fsd) 2167 memmove(fsd->logvol_id, logvol_id, 128); 2168 if (lvi) 2169 memmove(lvi->logvol_id, logvol_id, 128); 2170 } 2171 2172 /* --------------------------------------------------------------------- */ 2173 2174 void 2175 udf_inittag(struct udf_mount *ump, struct desc_tag *tag, int tagid, 2176 uint32_t sector) 2177 { 2178 assert(ump->logical_vol); 2179 2180 tag->id = udf_rw16(tagid); 2181 tag->descriptor_ver = ump->logical_vol->tag.descriptor_ver; 2182 tag->cksum = 0; 2183 tag->reserved = 0; 2184 tag->serial_num = ump->logical_vol->tag.serial_num; 2185 tag->tag_loc = udf_rw32(sector); 2186 } 2187 2188 2189 uint64_t 2190 udf_advance_uniqueid(struct udf_mount *ump) 2191 { 2192 uint64_t unique_id; 2193 2194 mutex_enter(&ump->logvol_mutex); 2195 unique_id = udf_rw64(ump->logvol_integrity->lvint_next_unique_id); 2196 if (unique_id < 0x10) 2197 unique_id = 0x10; 2198 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id + 1); 2199 mutex_exit(&ump->logvol_mutex); 2200 2201 return unique_id; 2202 } 2203 2204 2205 static void 2206 udf_adjust_filecount(struct udf_node *udf_node, int sign) 2207 { 2208 struct udf_mount *ump = udf_node->ump; 2209 uint32_t num_dirs, num_files; 2210 int udf_file_type; 2211 2212 /* get file type */ 2213 if (udf_node->fe) { 2214 udf_file_type = udf_node->fe->icbtag.file_type; 2215 } else { 2216 udf_file_type = udf_node->efe->icbtag.file_type; 2217 } 2218 2219 /* adjust file count */ 2220 mutex_enter(&ump->allocate_mutex); 2221 if (udf_file_type == UDF_ICB_FILETYPE_DIRECTORY) { 2222 num_dirs = udf_rw32(ump->logvol_info->num_directories); 2223 ump->logvol_info->num_directories = 2224 udf_rw32((num_dirs + sign)); 2225 } else { 2226 num_files = udf_rw32(ump->logvol_info->num_files); 2227 ump->logvol_info->num_files = 2228 udf_rw32((num_files + sign)); 2229 } 2230 mutex_exit(&ump->allocate_mutex); 2231 } 2232 2233 2234 void 2235 udf_osta_charset(struct charspec *charspec) 2236 { 2237 memset(charspec, 0, sizeof(struct charspec)); 2238 charspec->type = 0; 2239 strcpy((char *) charspec->inf, "OSTA Compressed Unicode"); 2240 } 2241 2242 2243 /* first call udf_set_regid and then the suffix */ 2244 void 2245 udf_set_regid(struct regid *regid, char const *name) 2246 { 2247 memset(regid, 0, sizeof(struct regid)); 2248 regid->flags = 0; /* not dirty and not protected */ 2249 strcpy((char *) regid->id, name); 2250 } 2251 2252 2253 void 2254 udf_add_domain_regid(struct udf_mount *ump, struct regid *regid) 2255 { 2256 uint16_t *ver; 2257 2258 ver = (uint16_t *) regid->id_suffix; 2259 *ver = ump->logvol_info->min_udf_readver; 2260 } 2261 2262 2263 void 2264 udf_add_udf_regid(struct udf_mount *ump, struct regid *regid) 2265 { 2266 uint16_t *ver; 2267 2268 ver = (uint16_t *) regid->id_suffix; 2269 *ver = ump->logvol_info->min_udf_readver; 2270 2271 regid->id_suffix[2] = 4; /* unix */ 2272 regid->id_suffix[3] = 8; /* NetBSD */ 2273 } 2274 2275 2276 void 2277 udf_add_impl_regid(struct udf_mount *ump, struct regid *regid) 2278 { 2279 regid->id_suffix[0] = 4; /* unix */ 2280 regid->id_suffix[1] = 8; /* NetBSD */ 2281 } 2282 2283 2284 void 2285 udf_add_app_regid(struct udf_mount *ump, struct regid *regid) 2286 { 2287 regid->id_suffix[0] = APP_VERSION_MAIN; 2288 regid->id_suffix[1] = APP_VERSION_SUB; 2289 } 2290 2291 static int 2292 udf_create_parentfid(struct udf_mount *ump, struct fileid_desc *fid, 2293 struct long_ad *parent, uint64_t unique_id) 2294 { 2295 /* the size of an empty FID is 38 but needs to be a multiple of 4 */ 2296 int fidsize = 40; 2297 2298 udf_inittag(ump, &fid->tag, TAGID_FID, udf_rw32(parent->loc.lb_num)); 2299 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 2300 fid->file_char = UDF_FILE_CHAR_DIR | UDF_FILE_CHAR_PAR; 2301 fid->icb = *parent; 2302 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 2303 fid->tag.desc_crc_len = udf_rw16(fidsize - UDF_DESC_TAG_LENGTH); 2304 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 2305 2306 return fidsize; 2307 } 2308 2309 /* --------------------------------------------------------------------- */ 2310 2311 /* 2312 * Extended attribute support. UDF knows of 3 places for extended attributes: 2313 * 2314 * (a) inside the file's (e)fe in the length of the extended attribute area 2315 * before the allocation descriptors/filedata 2316 * 2317 * (b) in a file referenced by (e)fe->ext_attr_icb and 2318 * 2319 * (c) in the e(fe)'s associated stream directory that can hold various 2320 * sub-files. In the stream directory a few fixed named subfiles are reserved 2321 * for NT/Unix ACL's and OS/2 attributes. 2322 * 2323 * NOTE: Extended attributes are read randomly but allways written 2324 * *atomicaly*. For ACL's this interface is propably different but not known 2325 * to me yet. 2326 * 2327 * Order of extended attributes in a space : 2328 * ECMA 167 EAs 2329 * Non block aligned Implementation Use EAs 2330 * Block aligned Implementation Use EAs 2331 * Application Use EAs 2332 */ 2333 2334 static int 2335 udf_impl_extattr_check(struct impl_extattr_entry *implext) 2336 { 2337 uint16_t *spos; 2338 2339 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2340 /* checksum valid? */ 2341 DPRINTF(EXTATTR, ("checking UDF impl. attr checksum\n")); 2342 spos = (uint16_t *) implext->data; 2343 if (udf_rw16(*spos) != udf_ea_cksum((uint8_t *) implext)) 2344 return EINVAL; 2345 } 2346 return 0; 2347 } 2348 2349 static void 2350 udf_calc_impl_extattr_checksum(struct impl_extattr_entry *implext) 2351 { 2352 uint16_t *spos; 2353 2354 if (strncmp(implext->imp_id.id, "*UDF", 4) == 0) { 2355 /* set checksum */ 2356 spos = (uint16_t *) implext->data; 2357 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2358 } 2359 } 2360 2361 2362 int 2363 udf_extattr_search_intern(struct udf_node *node, 2364 uint32_t sattr, char const *sattrname, 2365 uint32_t *offsetp, uint32_t *lengthp) 2366 { 2367 struct extattrhdr_desc *eahdr; 2368 struct extattr_entry *attrhdr; 2369 struct impl_extattr_entry *implext; 2370 uint32_t offset, a_l, sector_size; 2371 int32_t l_ea; 2372 uint8_t *pos; 2373 int error; 2374 2375 /* get mountpoint */ 2376 sector_size = node->ump->discinfo.sector_size; 2377 2378 /* get information from fe/efe */ 2379 if (node->fe) { 2380 l_ea = udf_rw32(node->fe->l_ea); 2381 eahdr = (struct extattrhdr_desc *) node->fe->data; 2382 } else { 2383 assert(node->efe); 2384 l_ea = udf_rw32(node->efe->l_ea); 2385 eahdr = (struct extattrhdr_desc *) node->efe->data; 2386 } 2387 2388 /* something recorded here? */ 2389 if (l_ea == 0) 2390 return ENOENT; 2391 2392 /* check extended attribute tag; what to do if it fails? */ 2393 error = udf_check_tag(eahdr); 2394 if (error) 2395 return EINVAL; 2396 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 2397 return EINVAL; 2398 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 2399 if (error) 2400 return EINVAL; 2401 2402 DPRINTF(EXTATTR, ("Found %d bytes of extended attributes\n", l_ea)); 2403 2404 /* looking for Ecma-167 attributes? */ 2405 offset = sizeof(struct extattrhdr_desc); 2406 2407 /* looking for either implemenation use or application use */ 2408 if (sattr == 2048) { /* [4/48.10.8] */ 2409 offset = udf_rw32(eahdr->impl_attr_loc); 2410 if (offset == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2411 return ENOENT; 2412 } 2413 if (sattr == 65536) { /* [4/48.10.9] */ 2414 offset = udf_rw32(eahdr->appl_attr_loc); 2415 if (offset == UDF_APPL_ATTR_LOC_NOT_PRESENT) 2416 return ENOENT; 2417 } 2418 2419 /* paranoia check offset and l_ea */ 2420 if (l_ea + offset >= sector_size - sizeof(struct extattr_entry)) 2421 return EINVAL; 2422 2423 DPRINTF(EXTATTR, ("Starting at offset %d\n", offset)); 2424 2425 /* find our extended attribute */ 2426 l_ea -= offset; 2427 pos = (uint8_t *) eahdr + offset; 2428 2429 while (l_ea >= sizeof(struct extattr_entry)) { 2430 DPRINTF(EXTATTR, ("%d extended attr bytes left\n", l_ea)); 2431 attrhdr = (struct extattr_entry *) pos; 2432 implext = (struct impl_extattr_entry *) pos; 2433 2434 /* get complete attribute length and check for roque values */ 2435 a_l = udf_rw32(attrhdr->a_l); 2436 DPRINTF(EXTATTR, ("attribute %d:%d, len %d/%d\n", 2437 udf_rw32(attrhdr->type), 2438 attrhdr->subtype, a_l, l_ea)); 2439 if ((a_l == 0) || (a_l > l_ea)) 2440 return EINVAL; 2441 2442 if (attrhdr->type != sattr) 2443 goto next_attribute; 2444 2445 /* we might have found it! */ 2446 if (attrhdr->type < 2048) { /* Ecma-167 attribute */ 2447 *offsetp = offset; 2448 *lengthp = a_l; 2449 return 0; /* success */ 2450 } 2451 2452 /* 2453 * Implementation use and application use extended attributes 2454 * have a name to identify. They share the same structure only 2455 * UDF implementation use extended attributes have a checksum 2456 * we need to check 2457 */ 2458 2459 DPRINTF(EXTATTR, ("named attribute %s\n", implext->imp_id.id)); 2460 if (strcmp(implext->imp_id.id, sattrname) == 0) { 2461 /* we have found our appl/implementation attribute */ 2462 *offsetp = offset; 2463 *lengthp = a_l; 2464 return 0; /* success */ 2465 } 2466 2467 next_attribute: 2468 /* next attribute */ 2469 pos += a_l; 2470 l_ea -= a_l; 2471 offset += a_l; 2472 } 2473 /* not found */ 2474 return ENOENT; 2475 } 2476 2477 2478 static void 2479 udf_extattr_insert_internal(struct udf_mount *ump, union dscrptr *dscr, 2480 struct extattr_entry *extattr) 2481 { 2482 struct file_entry *fe; 2483 struct extfile_entry *efe; 2484 struct extattrhdr_desc *extattrhdr; 2485 struct impl_extattr_entry *implext; 2486 uint32_t impl_attr_loc, appl_attr_loc, l_ea, a_l, exthdr_len; 2487 uint32_t *l_eap, l_ad; 2488 uint16_t *spos; 2489 uint8_t *bpos, *data; 2490 2491 if (udf_rw16(dscr->tag.id) == TAGID_FENTRY) { 2492 fe = &dscr->fe; 2493 data = fe->data; 2494 l_eap = &fe->l_ea; 2495 l_ad = udf_rw32(fe->l_ad); 2496 } else if (udf_rw16(dscr->tag.id) == TAGID_EXTFENTRY) { 2497 efe = &dscr->efe; 2498 data = efe->data; 2499 l_eap = &efe->l_ea; 2500 l_ad = udf_rw32(efe->l_ad); 2501 } else { 2502 panic("Bad tag passed to udf_extattr_insert_internal"); 2503 } 2504 2505 /* can't append already written to file descriptors yet */ 2506 assert(l_ad == 0); 2507 __USE(l_ad); 2508 2509 /* should have a header! */ 2510 extattrhdr = (struct extattrhdr_desc *) data; 2511 l_ea = udf_rw32(*l_eap); 2512 if (l_ea == 0) { 2513 /* create empty extended attribute header */ 2514 exthdr_len = sizeof(struct extattrhdr_desc); 2515 2516 udf_inittag(ump, &extattrhdr->tag, TAGID_EXTATTR_HDR, 2517 /* loc */ 0); 2518 extattrhdr->impl_attr_loc = udf_rw32(exthdr_len); 2519 extattrhdr->appl_attr_loc = udf_rw32(exthdr_len); 2520 extattrhdr->tag.desc_crc_len = udf_rw16(8); 2521 2522 /* record extended attribute header length */ 2523 l_ea = exthdr_len; 2524 *l_eap = udf_rw32(l_ea); 2525 } 2526 2527 /* extract locations */ 2528 impl_attr_loc = udf_rw32(extattrhdr->impl_attr_loc); 2529 appl_attr_loc = udf_rw32(extattrhdr->appl_attr_loc); 2530 if (impl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2531 impl_attr_loc = l_ea; 2532 if (appl_attr_loc == UDF_IMPL_ATTR_LOC_NOT_PRESENT) 2533 appl_attr_loc = l_ea; 2534 2535 /* Ecma 167 EAs */ 2536 if (udf_rw32(extattr->type) < 2048) { 2537 assert(impl_attr_loc == l_ea); 2538 assert(appl_attr_loc == l_ea); 2539 } 2540 2541 /* implementation use extended attributes */ 2542 if (udf_rw32(extattr->type) == 2048) { 2543 assert(appl_attr_loc == l_ea); 2544 2545 /* calculate and write extended attribute header checksum */ 2546 implext = (struct impl_extattr_entry *) extattr; 2547 assert(udf_rw32(implext->iu_l) == 4); /* [UDF 3.3.4.5] */ 2548 spos = (uint16_t *) implext->data; 2549 *spos = udf_rw16(udf_ea_cksum((uint8_t *) implext)); 2550 } 2551 2552 /* application use extended attributes */ 2553 assert(udf_rw32(extattr->type) != 65536); 2554 assert(appl_attr_loc == l_ea); 2555 2556 /* append the attribute at the end of the current space */ 2557 bpos = data + udf_rw32(*l_eap); 2558 a_l = udf_rw32(extattr->a_l); 2559 2560 /* update impl. attribute locations */ 2561 if (udf_rw32(extattr->type) < 2048) { 2562 impl_attr_loc = l_ea + a_l; 2563 appl_attr_loc = l_ea + a_l; 2564 } 2565 if (udf_rw32(extattr->type) == 2048) { 2566 appl_attr_loc = l_ea + a_l; 2567 } 2568 2569 /* copy and advance */ 2570 memcpy(bpos, extattr, a_l); 2571 l_ea += a_l; 2572 *l_eap = udf_rw32(l_ea); 2573 2574 /* do the `dance` again backwards */ 2575 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) != 2) { 2576 if (impl_attr_loc == l_ea) 2577 impl_attr_loc = UDF_IMPL_ATTR_LOC_NOT_PRESENT; 2578 if (appl_attr_loc == l_ea) 2579 appl_attr_loc = UDF_APPL_ATTR_LOC_NOT_PRESENT; 2580 } 2581 2582 /* store offsets */ 2583 extattrhdr->impl_attr_loc = udf_rw32(impl_attr_loc); 2584 extattrhdr->appl_attr_loc = udf_rw32(appl_attr_loc); 2585 } 2586 2587 2588 /* --------------------------------------------------------------------- */ 2589 2590 static int 2591 udf_update_lvid_from_vat_extattr(struct udf_node *vat_node) 2592 { 2593 struct udf_mount *ump; 2594 struct udf_logvol_info *lvinfo; 2595 struct impl_extattr_entry *implext; 2596 struct vatlvext_extattr_entry lvext; 2597 const char *extstr = "*UDF VAT LVExtension"; 2598 uint64_t vat_uniqueid; 2599 uint32_t offset, a_l; 2600 uint8_t *ea_start, *lvextpos; 2601 int error; 2602 2603 /* get mountpoint and lvinfo */ 2604 ump = vat_node->ump; 2605 lvinfo = ump->logvol_info; 2606 2607 /* get information from fe/efe */ 2608 if (vat_node->fe) { 2609 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2610 ea_start = vat_node->fe->data; 2611 } else { 2612 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2613 ea_start = vat_node->efe->data; 2614 } 2615 2616 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2617 if (error) 2618 return error; 2619 2620 implext = (struct impl_extattr_entry *) (ea_start + offset); 2621 error = udf_impl_extattr_check(implext); 2622 if (error) 2623 return error; 2624 2625 /* paranoia */ 2626 if (a_l != sizeof(*implext) -1 + udf_rw32(implext->iu_l) + sizeof(lvext)) { 2627 DPRINTF(VOLUMES, ("VAT LVExtension size doesn't compute\n")); 2628 return EINVAL; 2629 } 2630 2631 /* 2632 * we have found our "VAT LVExtension attribute. BUT due to a 2633 * bug in the specification it might not be word aligned so 2634 * copy first to avoid panics on some machines (!!) 2635 */ 2636 DPRINTF(VOLUMES, ("Found VAT LVExtension attr\n")); 2637 lvextpos = implext->data + udf_rw32(implext->iu_l); 2638 memcpy(&lvext, lvextpos, sizeof(lvext)); 2639 2640 /* check if it was updated the last time */ 2641 if (udf_rw64(lvext.unique_id_chk) == vat_uniqueid) { 2642 lvinfo->num_files = lvext.num_files; 2643 lvinfo->num_directories = lvext.num_directories; 2644 udf_update_logvolname(ump, lvext.logvol_id); 2645 } else { 2646 DPRINTF(VOLUMES, ("VAT LVExtension out of date\n")); 2647 /* replace VAT LVExt by free space EA */ 2648 memset(implext->imp_id.id, 0, UDF_REGID_ID_SIZE); 2649 strcpy(implext->imp_id.id, "*UDF FreeEASpace"); 2650 udf_calc_impl_extattr_checksum(implext); 2651 } 2652 2653 return 0; 2654 } 2655 2656 2657 static int 2658 udf_update_vat_extattr_from_lvid(struct udf_node *vat_node) 2659 { 2660 struct udf_mount *ump; 2661 struct udf_logvol_info *lvinfo; 2662 struct impl_extattr_entry *implext; 2663 struct vatlvext_extattr_entry lvext; 2664 const char *extstr = "*UDF VAT LVExtension"; 2665 uint64_t vat_uniqueid; 2666 uint32_t offset, a_l; 2667 uint8_t *ea_start, *lvextpos; 2668 int error; 2669 2670 /* get mountpoint and lvinfo */ 2671 ump = vat_node->ump; 2672 lvinfo = ump->logvol_info; 2673 2674 /* get information from fe/efe */ 2675 if (vat_node->fe) { 2676 vat_uniqueid = udf_rw64(vat_node->fe->unique_id); 2677 ea_start = vat_node->fe->data; 2678 } else { 2679 vat_uniqueid = udf_rw64(vat_node->efe->unique_id); 2680 ea_start = vat_node->efe->data; 2681 } 2682 2683 error = udf_extattr_search_intern(vat_node, 2048, extstr, &offset, &a_l); 2684 if (error) 2685 return error; 2686 /* found, it existed */ 2687 2688 /* paranoia */ 2689 implext = (struct impl_extattr_entry *) (ea_start + offset); 2690 error = udf_impl_extattr_check(implext); 2691 if (error) { 2692 DPRINTF(VOLUMES, ("VAT LVExtension bad on update\n")); 2693 return error; 2694 } 2695 /* it is correct */ 2696 2697 /* 2698 * we have found our "VAT LVExtension attribute. BUT due to a 2699 * bug in the specification it might not be word aligned so 2700 * copy first to avoid panics on some machines (!!) 2701 */ 2702 DPRINTF(VOLUMES, ("Updating VAT LVExtension attr\n")); 2703 lvextpos = implext->data + udf_rw32(implext->iu_l); 2704 2705 lvext.unique_id_chk = vat_uniqueid; 2706 lvext.num_files = lvinfo->num_files; 2707 lvext.num_directories = lvinfo->num_directories; 2708 memmove(lvext.logvol_id, ump->logical_vol->logvol_id, 128); 2709 2710 memcpy(lvextpos, &lvext, sizeof(lvext)); 2711 2712 return 0; 2713 } 2714 2715 /* --------------------------------------------------------------------- */ 2716 2717 int 2718 udf_vat_read(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2719 { 2720 struct udf_mount *ump = vat_node->ump; 2721 2722 if (offset + size > ump->vat_offset + ump->vat_entries * 4) 2723 return EINVAL; 2724 2725 memcpy(blob, ump->vat_table + offset, size); 2726 return 0; 2727 } 2728 2729 int 2730 udf_vat_write(struct udf_node *vat_node, uint8_t *blob, int size, uint32_t offset) 2731 { 2732 struct udf_mount *ump = vat_node->ump; 2733 uint32_t offset_high; 2734 uint8_t *new_vat_table; 2735 2736 /* extent VAT allocation if needed */ 2737 offset_high = offset + size; 2738 if (offset_high >= ump->vat_table_alloc_len) { 2739 /* realloc */ 2740 new_vat_table = realloc(ump->vat_table, 2741 ump->vat_table_alloc_len + UDF_VAT_CHUNKSIZE, 2742 M_UDFVOLD, M_WAITOK | M_CANFAIL); 2743 if (!new_vat_table) { 2744 printf("udf_vat_write: can't extent VAT, out of mem\n"); 2745 return ENOMEM; 2746 } 2747 ump->vat_table = new_vat_table; 2748 ump->vat_table_alloc_len += UDF_VAT_CHUNKSIZE; 2749 } 2750 ump->vat_table_len = MAX(ump->vat_table_len, offset_high); 2751 2752 memcpy(ump->vat_table + offset, blob, size); 2753 return 0; 2754 } 2755 2756 /* --------------------------------------------------------------------- */ 2757 2758 /* TODO support previous VAT location writeout */ 2759 static int 2760 udf_update_vat_descriptor(struct udf_mount *ump) 2761 { 2762 struct udf_node *vat_node = ump->vat_node; 2763 struct udf_logvol_info *lvinfo = ump->logvol_info; 2764 struct icb_tag *icbtag; 2765 struct udf_oldvat_tail *oldvat_tl; 2766 struct udf_vat *vat; 2767 uint64_t unique_id; 2768 uint32_t lb_size; 2769 uint8_t *raw_vat; 2770 int filetype, error; 2771 2772 KASSERT(vat_node); 2773 KASSERT(lvinfo); 2774 lb_size = udf_rw32(ump->logical_vol->lb_size); 2775 2776 /* get our new unique_id */ 2777 unique_id = udf_advance_uniqueid(ump); 2778 2779 /* get information from fe/efe */ 2780 if (vat_node->fe) { 2781 icbtag = &vat_node->fe->icbtag; 2782 vat_node->fe->unique_id = udf_rw64(unique_id); 2783 } else { 2784 icbtag = &vat_node->efe->icbtag; 2785 vat_node->efe->unique_id = udf_rw64(unique_id); 2786 } 2787 2788 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2789 filetype = icbtag->file_type; 2790 KASSERT((filetype == 0) || (filetype == UDF_ICB_FILETYPE_VAT)); 2791 2792 /* allocate piece to process head or tail of VAT file */ 2793 raw_vat = malloc(lb_size, M_TEMP, M_WAITOK); 2794 2795 if (filetype == 0) { 2796 /* 2797 * Update "*UDF VAT LVExtension" extended attribute from the 2798 * lvint if present. 2799 */ 2800 udf_update_vat_extattr_from_lvid(vat_node); 2801 2802 /* setup identifying regid */ 2803 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2804 memset(oldvat_tl, 0, sizeof(struct udf_oldvat_tail)); 2805 2806 udf_set_regid(&oldvat_tl->id, "*UDF Virtual Alloc Tbl"); 2807 udf_add_udf_regid(ump, &oldvat_tl->id); 2808 oldvat_tl->prev_vat = udf_rw32(0xffffffff); 2809 2810 /* write out new tail of virtual allocation table file */ 2811 error = udf_vat_write(vat_node, raw_vat, 2812 sizeof(struct udf_oldvat_tail), ump->vat_entries * 4); 2813 } else { 2814 /* compose the VAT2 header */ 2815 vat = (struct udf_vat *) raw_vat; 2816 memset(vat, 0, sizeof(struct udf_vat)); 2817 2818 vat->header_len = udf_rw16(152); /* as per spec */ 2819 vat->impl_use_len = udf_rw16(0); 2820 memmove(vat->logvol_id, ump->logical_vol->logvol_id, 128); 2821 vat->prev_vat = udf_rw32(0xffffffff); 2822 vat->num_files = lvinfo->num_files; 2823 vat->num_directories = lvinfo->num_directories; 2824 vat->min_udf_readver = lvinfo->min_udf_readver; 2825 vat->min_udf_writever = lvinfo->min_udf_writever; 2826 vat->max_udf_writever = lvinfo->max_udf_writever; 2827 2828 error = udf_vat_write(vat_node, raw_vat, 2829 sizeof(struct udf_vat), 0); 2830 } 2831 free(raw_vat, M_TEMP); 2832 2833 return error; /* success! */ 2834 } 2835 2836 2837 int 2838 udf_writeout_vat(struct udf_mount *ump) 2839 { 2840 struct udf_node *vat_node = ump->vat_node; 2841 int error; 2842 2843 KASSERT(vat_node); 2844 2845 DPRINTF(CALL, ("udf_writeout_vat\n")); 2846 2847 // mutex_enter(&ump->allocate_mutex); 2848 udf_update_vat_descriptor(ump); 2849 2850 /* write out the VAT contents ; TODO intelligent writing */ 2851 error = vn_rdwr(UIO_WRITE, vat_node->vnode, 2852 ump->vat_table, ump->vat_table_len, 0, 2853 UIO_SYSSPACE, 0, FSCRED, NULL, NULL); 2854 if (error) { 2855 printf("udf_writeout_vat: failed to write out VAT contents\n"); 2856 goto out; 2857 } 2858 2859 // mutex_exit(&ump->allocate_mutex); 2860 2861 error = vflushbuf(ump->vat_node->vnode, FSYNC_WAIT); 2862 if (error) 2863 goto out; 2864 error = VOP_FSYNC(ump->vat_node->vnode, 2865 FSCRED, FSYNC_WAIT, 0, 0); 2866 if (error) 2867 printf("udf_writeout_vat: error writing VAT node!\n"); 2868 out: 2869 return error; 2870 } 2871 2872 /* --------------------------------------------------------------------- */ 2873 2874 /* 2875 * Read in relevant pieces of VAT file and check if its indeed a VAT file 2876 * descriptor. If OK, read in complete VAT file. 2877 */ 2878 2879 static int 2880 udf_check_for_vat(struct udf_node *vat_node) 2881 { 2882 struct udf_mount *ump; 2883 struct icb_tag *icbtag; 2884 struct timestamp *mtime; 2885 struct udf_vat *vat; 2886 struct udf_oldvat_tail *oldvat_tl; 2887 struct udf_logvol_info *lvinfo; 2888 uint64_t unique_id; 2889 uint32_t vat_length; 2890 uint32_t vat_offset, vat_entries, vat_table_alloc_len; 2891 uint32_t sector_size; 2892 uint32_t *raw_vat; 2893 uint8_t *vat_table; 2894 char *regid_name; 2895 int filetype; 2896 int error; 2897 2898 /* vat_length is really 64 bits though impossible */ 2899 2900 DPRINTF(VOLUMES, ("Checking for VAT\n")); 2901 if (!vat_node) 2902 return ENOENT; 2903 2904 /* get mount info */ 2905 ump = vat_node->ump; 2906 sector_size = udf_rw32(ump->logical_vol->lb_size); 2907 2908 /* check assertions */ 2909 assert(vat_node->fe || vat_node->efe); 2910 assert(ump->logvol_integrity); 2911 2912 /* set vnode type to regular file or we can't read from it! */ 2913 vat_node->vnode->v_type = VREG; 2914 2915 /* get information from fe/efe */ 2916 if (vat_node->fe) { 2917 vat_length = udf_rw64(vat_node->fe->inf_len); 2918 icbtag = &vat_node->fe->icbtag; 2919 mtime = &vat_node->fe->mtime; 2920 unique_id = udf_rw64(vat_node->fe->unique_id); 2921 } else { 2922 vat_length = udf_rw64(vat_node->efe->inf_len); 2923 icbtag = &vat_node->efe->icbtag; 2924 mtime = &vat_node->efe->mtime; 2925 unique_id = udf_rw64(vat_node->efe->unique_id); 2926 } 2927 2928 /* Check icb filetype! it has to be 0 or UDF_ICB_FILETYPE_VAT */ 2929 filetype = icbtag->file_type; 2930 if ((filetype != 0) && (filetype != UDF_ICB_FILETYPE_VAT)) 2931 return ENOENT; 2932 2933 DPRINTF(VOLUMES, ("\tPossible VAT length %d\n", vat_length)); 2934 2935 vat_table_alloc_len = 2936 ((vat_length + UDF_VAT_CHUNKSIZE-1) / UDF_VAT_CHUNKSIZE) 2937 * UDF_VAT_CHUNKSIZE; 2938 2939 vat_table = malloc(vat_table_alloc_len, M_UDFVOLD, 2940 M_CANFAIL | M_WAITOK); 2941 if (vat_table == NULL) { 2942 printf("allocation of %d bytes failed for VAT\n", 2943 vat_table_alloc_len); 2944 return ENOMEM; 2945 } 2946 2947 /* allocate piece to read in head or tail of VAT file */ 2948 raw_vat = malloc(sector_size, M_TEMP, M_WAITOK); 2949 2950 /* 2951 * check contents of the file if its the old 1.50 VAT table format. 2952 * Its notoriously broken and allthough some implementations support an 2953 * extention as defined in the UDF 1.50 errata document, its doubtfull 2954 * to be useable since a lot of implementations don't maintain it. 2955 */ 2956 lvinfo = ump->logvol_info; 2957 2958 if (filetype == 0) { 2959 /* definition */ 2960 vat_offset = 0; 2961 vat_entries = (vat_length-36)/4; 2962 2963 /* read in tail of virtual allocation table file */ 2964 error = vn_rdwr(UIO_READ, vat_node->vnode, 2965 (uint8_t *) raw_vat, 2966 sizeof(struct udf_oldvat_tail), 2967 vat_entries * 4, 2968 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2969 NULL, NULL); 2970 if (error) 2971 goto out; 2972 2973 /* check 1.50 VAT */ 2974 oldvat_tl = (struct udf_oldvat_tail *) raw_vat; 2975 regid_name = (char *) oldvat_tl->id.id; 2976 error = strncmp(regid_name, "*UDF Virtual Alloc Tbl", 22); 2977 if (error) { 2978 DPRINTF(VOLUMES, ("VAT format 1.50 rejected\n")); 2979 error = ENOENT; 2980 goto out; 2981 } 2982 2983 /* 2984 * update LVID from "*UDF VAT LVExtension" extended attribute 2985 * if present. 2986 */ 2987 udf_update_lvid_from_vat_extattr(vat_node); 2988 } else { 2989 /* read in head of virtual allocation table file */ 2990 error = vn_rdwr(UIO_READ, vat_node->vnode, 2991 (uint8_t *) raw_vat, 2992 sizeof(struct udf_vat), 0, 2993 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 2994 NULL, NULL); 2995 if (error) 2996 goto out; 2997 2998 /* definition */ 2999 vat = (struct udf_vat *) raw_vat; 3000 vat_offset = vat->header_len; 3001 vat_entries = (vat_length - vat_offset)/4; 3002 3003 assert(lvinfo); 3004 lvinfo->num_files = vat->num_files; 3005 lvinfo->num_directories = vat->num_directories; 3006 lvinfo->min_udf_readver = vat->min_udf_readver; 3007 lvinfo->min_udf_writever = vat->min_udf_writever; 3008 lvinfo->max_udf_writever = vat->max_udf_writever; 3009 3010 udf_update_logvolname(ump, vat->logvol_id); 3011 } 3012 3013 /* read in complete VAT file */ 3014 error = vn_rdwr(UIO_READ, vat_node->vnode, 3015 vat_table, 3016 vat_length, 0, 3017 UIO_SYSSPACE, IO_SYNC | IO_NODELOCKED, FSCRED, 3018 NULL, NULL); 3019 if (error) 3020 printf("read in of complete VAT file failed (error %d)\n", 3021 error); 3022 if (error) 3023 goto out; 3024 3025 DPRINTF(VOLUMES, ("VAT format accepted, marking it closed\n")); 3026 ump->logvol_integrity->lvint_next_unique_id = udf_rw64(unique_id); 3027 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3028 ump->logvol_integrity->time = *mtime; 3029 3030 /* if we're updating, free old allocated space */ 3031 if (ump->vat_table) 3032 free(ump->vat_table, M_UDFVOLD); 3033 3034 ump->vat_table_len = vat_length; 3035 ump->vat_table_alloc_len = vat_table_alloc_len; 3036 ump->vat_table = vat_table; 3037 ump->vat_offset = vat_offset; 3038 ump->vat_entries = vat_entries; 3039 ump->vat_last_free_lb = 0; /* start at beginning */ 3040 3041 out: 3042 if (error) { 3043 if (vat_table) 3044 free(vat_table, M_UDFVOLD); 3045 } 3046 free(raw_vat, M_TEMP); 3047 3048 return error; 3049 } 3050 3051 /* --------------------------------------------------------------------- */ 3052 3053 static int 3054 udf_search_vat(struct udf_mount *ump, union udf_pmap *mapping) 3055 { 3056 struct udf_node *vat_node, *accepted_vat_node; 3057 struct long_ad icb_loc; 3058 uint32_t early_vat_loc, late_vat_loc, vat_loc; 3059 int error; 3060 3061 /* mapping info not needed */ 3062 mapping = mapping; 3063 3064 DPRINTF(VOLUMES, ("Searching VAT\n")); 3065 3066 /* 3067 * Start reading forward in blocks from the first possible vat 3068 * location. If not found in this block, start again a bit before 3069 * until we get a hit. 3070 */ 3071 late_vat_loc = ump->last_possible_vat_location; 3072 early_vat_loc = MAX(late_vat_loc - 64, ump->first_possible_vat_location); 3073 3074 DPRINTF(VOLUMES, ("\tfull range %d to %d\n", early_vat_loc, late_vat_loc)); 3075 accepted_vat_node = NULL; 3076 do { 3077 vat_loc = early_vat_loc; 3078 DPRINTF(VOLUMES, ("\tchecking range %d to %d\n", 3079 early_vat_loc, late_vat_loc)); 3080 do { 3081 DPRINTF(VOLUMES, ("\t\tChecking for VAT at sector %d\n", 3082 vat_loc)); 3083 icb_loc.loc.part_num = udf_rw16(UDF_VTOP_RAWPART); 3084 icb_loc.loc.lb_num = udf_rw32(vat_loc); 3085 3086 error = udf_get_node(ump, &icb_loc, &vat_node); 3087 if (!error) { 3088 error = udf_check_for_vat(vat_node); 3089 vat_node->i_flags = 0; /* reset access */ 3090 } 3091 if (!error) { 3092 DPRINTFIF(VOLUMES, !error, 3093 ("VAT candidate accepted at %d\n", 3094 vat_loc)); 3095 if (accepted_vat_node) 3096 vput(accepted_vat_node->vnode); 3097 accepted_vat_node = vat_node; 3098 accepted_vat_node->i_flags |= IN_NO_DELETE; 3099 vat_node = NULL; 3100 } 3101 if (vat_node) 3102 vput(vat_node->vnode); 3103 vat_loc++; /* walk forward */ 3104 } while (vat_loc < late_vat_loc); 3105 if (accepted_vat_node) 3106 break; 3107 3108 early_vat_loc = MAX(early_vat_loc - 64, ump->first_possible_vat_location); 3109 late_vat_loc = MIN(early_vat_loc + 64, ump->last_possible_vat_location); 3110 } while (late_vat_loc > ump->first_possible_vat_location); 3111 3112 /* keep our last accepted VAT node around */ 3113 if (accepted_vat_node) { 3114 /* revert no delete flag again to avoid potential side effects */ 3115 accepted_vat_node->i_flags &= ~IN_NO_DELETE; 3116 3117 UDF_SET_SYSTEMFILE(accepted_vat_node->vnode); 3118 ump->vat_node = accepted_vat_node; 3119 return 0; 3120 } 3121 3122 return error; 3123 } 3124 3125 /* --------------------------------------------------------------------- */ 3126 3127 static int 3128 udf_read_sparables(struct udf_mount *ump, union udf_pmap *mapping) 3129 { 3130 union dscrptr *dscr; 3131 struct part_map_spare *pms = &mapping->pms; 3132 uint32_t lb_num; 3133 int spar, error; 3134 3135 /* 3136 * The partition mapping passed on to us specifies the information we 3137 * need to locate and initialise the sparable partition mapping 3138 * information we need. 3139 */ 3140 3141 DPRINTF(VOLUMES, ("Read sparable table\n")); 3142 ump->sparable_packet_size = udf_rw16(pms->packet_len); 3143 KASSERT(ump->sparable_packet_size >= ump->packet_size); /* XXX */ 3144 3145 for (spar = 0; spar < pms->n_st; spar++) { 3146 lb_num = pms->st_loc[spar]; 3147 DPRINTF(VOLUMES, ("Checking for sparing table %d\n", lb_num)); 3148 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3149 if (!error && dscr) { 3150 if (udf_rw16(dscr->tag.id) == TAGID_SPARING_TABLE) { 3151 if (ump->sparing_table) 3152 free(ump->sparing_table, M_UDFVOLD); 3153 ump->sparing_table = &dscr->spt; 3154 dscr = NULL; 3155 DPRINTF(VOLUMES, 3156 ("Sparing table accepted (%d entries)\n", 3157 udf_rw16(ump->sparing_table->rt_l))); 3158 break; /* we're done */ 3159 } 3160 } 3161 if (dscr) 3162 free(dscr, M_UDFVOLD); 3163 } 3164 3165 if (ump->sparing_table) 3166 return 0; 3167 3168 return ENOENT; 3169 } 3170 3171 /* --------------------------------------------------------------------- */ 3172 3173 static int 3174 udf_read_metadata_nodes(struct udf_mount *ump, union udf_pmap *mapping) 3175 { 3176 struct part_map_meta *pmm = &mapping->pmm; 3177 struct long_ad icb_loc; 3178 struct vnode *vp; 3179 uint16_t raw_phys_part, phys_part; 3180 int error; 3181 3182 /* 3183 * BUGALERT: some rogue implementations use random physical 3184 * partition numbers to break other implementations so lookup 3185 * the number. 3186 */ 3187 3188 /* extract our allocation parameters set up on format */ 3189 ump->metadata_alloc_unit_size = udf_rw32(mapping->pmm.alloc_unit_size); 3190 ump->metadata_alignment_unit_size = udf_rw16(mapping->pmm.alignment_unit_size); 3191 ump->metadata_flags = mapping->pmm.flags; 3192 3193 DPRINTF(VOLUMES, ("Reading in Metadata files\n")); 3194 raw_phys_part = udf_rw16(pmm->part_num); 3195 phys_part = udf_find_raw_phys(ump, raw_phys_part); 3196 3197 icb_loc.loc.part_num = udf_rw16(phys_part); 3198 3199 DPRINTF(VOLUMES, ("Metadata file\n")); 3200 icb_loc.loc.lb_num = pmm->meta_file_lbn; 3201 error = udf_get_node(ump, &icb_loc, &ump->metadata_node); 3202 if (ump->metadata_node) { 3203 vp = ump->metadata_node->vnode; 3204 UDF_SET_SYSTEMFILE(vp); 3205 } 3206 3207 icb_loc.loc.lb_num = pmm->meta_mirror_file_lbn; 3208 if (icb_loc.loc.lb_num != -1) { 3209 DPRINTF(VOLUMES, ("Metadata copy file\n")); 3210 error = udf_get_node(ump, &icb_loc, &ump->metadatamirror_node); 3211 if (ump->metadatamirror_node) { 3212 vp = ump->metadatamirror_node->vnode; 3213 UDF_SET_SYSTEMFILE(vp); 3214 } 3215 } 3216 3217 icb_loc.loc.lb_num = pmm->meta_bitmap_file_lbn; 3218 if (icb_loc.loc.lb_num != -1) { 3219 DPRINTF(VOLUMES, ("Metadata bitmap file\n")); 3220 error = udf_get_node(ump, &icb_loc, &ump->metadatabitmap_node); 3221 if (ump->metadatabitmap_node) { 3222 vp = ump->metadatabitmap_node->vnode; 3223 UDF_SET_SYSTEMFILE(vp); 3224 } 3225 } 3226 3227 /* if we're mounting read-only we relax the requirements */ 3228 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) { 3229 error = EFAULT; 3230 if (ump->metadata_node) 3231 error = 0; 3232 if ((ump->metadata_node == NULL) && (ump->metadatamirror_node)) { 3233 printf( "udf mount: Metadata file not readable, " 3234 "substituting Metadata copy file\n"); 3235 ump->metadata_node = ump->metadatamirror_node; 3236 ump->metadatamirror_node = NULL; 3237 error = 0; 3238 } 3239 } else { 3240 /* mounting read/write */ 3241 /* XXX DISABLED! metadata writing is not working yet XXX */ 3242 if (error) 3243 error = EROFS; 3244 } 3245 DPRINTFIF(VOLUMES, error, ("udf mount: failed to read " 3246 "metadata files\n")); 3247 return error; 3248 } 3249 3250 /* --------------------------------------------------------------------- */ 3251 3252 int 3253 udf_read_vds_tables(struct udf_mount *ump) 3254 { 3255 union udf_pmap *mapping; 3256 /* struct udf_args *args = &ump->mount_args; */ 3257 uint32_t n_pm; 3258 uint32_t log_part; 3259 uint8_t *pmap_pos; 3260 int pmap_size; 3261 int error; 3262 3263 /* Iterate (again) over the part mappings for locations */ 3264 n_pm = udf_rw32(ump->logical_vol->n_pm); /* num partmaps */ 3265 pmap_pos = ump->logical_vol->maps; 3266 3267 for (log_part = 0; log_part < n_pm; log_part++) { 3268 mapping = (union udf_pmap *) pmap_pos; 3269 switch (ump->vtop_tp[log_part]) { 3270 case UDF_VTOP_TYPE_PHYS : 3271 /* nothing */ 3272 break; 3273 case UDF_VTOP_TYPE_VIRT : 3274 /* search and load VAT */ 3275 error = udf_search_vat(ump, mapping); 3276 if (error) 3277 return ENOENT; 3278 break; 3279 case UDF_VTOP_TYPE_SPARABLE : 3280 /* load one of the sparable tables */ 3281 error = udf_read_sparables(ump, mapping); 3282 if (error) 3283 return ENOENT; 3284 break; 3285 case UDF_VTOP_TYPE_META : 3286 /* load the associated file descriptors */ 3287 error = udf_read_metadata_nodes(ump, mapping); 3288 if (error) 3289 return ENOENT; 3290 break; 3291 default: 3292 break; 3293 } 3294 pmap_size = pmap_pos[1]; 3295 pmap_pos += pmap_size; 3296 } 3297 3298 /* read in and check unallocated and free space info if writing */ 3299 if ((ump->vfs_mountp->mnt_flag & MNT_RDONLY) == 0) { 3300 error = udf_read_physical_partition_spacetables(ump); 3301 if (error) 3302 return error; 3303 3304 /* also read in metadata partition spacebitmap if defined */ 3305 error = udf_read_metadata_partition_spacetable(ump); 3306 return error; 3307 } 3308 3309 return 0; 3310 } 3311 3312 /* --------------------------------------------------------------------- */ 3313 3314 int 3315 udf_read_rootdirs(struct udf_mount *ump) 3316 { 3317 union dscrptr *dscr; 3318 /* struct udf_args *args = &ump->mount_args; */ 3319 struct udf_node *rootdir_node, *streamdir_node; 3320 struct long_ad fsd_loc, *dir_loc; 3321 uint32_t lb_num, dummy; 3322 uint32_t fsd_len; 3323 int dscr_type; 3324 int error; 3325 3326 /* TODO implement FSD reading in separate function like integrity? */ 3327 /* get fileset descriptor sequence */ 3328 fsd_loc = ump->logical_vol->lv_fsd_loc; 3329 fsd_len = udf_rw32(fsd_loc.len); 3330 3331 dscr = NULL; 3332 error = 0; 3333 while (fsd_len || error) { 3334 DPRINTF(VOLUMES, ("fsd_len = %d\n", fsd_len)); 3335 /* translate fsd_loc to lb_num */ 3336 error = udf_translate_vtop(ump, &fsd_loc, &lb_num, &dummy); 3337 if (error) 3338 break; 3339 DPRINTF(VOLUMES, ("Reading FSD at lb %d\n", lb_num)); 3340 error = udf_read_phys_dscr(ump, lb_num, M_UDFVOLD, &dscr); 3341 /* end markers */ 3342 if (error || (dscr == NULL)) 3343 break; 3344 3345 /* analyse */ 3346 dscr_type = udf_rw16(dscr->tag.id); 3347 if (dscr_type == TAGID_TERM) 3348 break; 3349 if (dscr_type != TAGID_FSD) { 3350 free(dscr, M_UDFVOLD); 3351 return ENOENT; 3352 } 3353 3354 /* 3355 * TODO check for multiple fileset descriptors; its only 3356 * picking the last now. Also check for FSD 3357 * correctness/interpretability 3358 */ 3359 3360 /* update */ 3361 if (ump->fileset_desc) { 3362 free(ump->fileset_desc, M_UDFVOLD); 3363 } 3364 ump->fileset_desc = &dscr->fsd; 3365 dscr = NULL; 3366 3367 /* continue to the next fsd */ 3368 fsd_len -= ump->discinfo.sector_size; 3369 fsd_loc.loc.lb_num = udf_rw32(udf_rw32(fsd_loc.loc.lb_num)+1); 3370 3371 /* follow up to fsd->next_ex (long_ad) if its not null */ 3372 if (udf_rw32(ump->fileset_desc->next_ex.len)) { 3373 DPRINTF(VOLUMES, ("follow up FSD extent\n")); 3374 fsd_loc = ump->fileset_desc->next_ex; 3375 fsd_len = udf_rw32(ump->fileset_desc->next_ex.len); 3376 } 3377 } 3378 if (dscr) 3379 free(dscr, M_UDFVOLD); 3380 3381 /* there has to be one */ 3382 if (ump->fileset_desc == NULL) 3383 return ENOENT; 3384 3385 DPRINTF(VOLUMES, ("FSD read in fine\n")); 3386 DPRINTF(VOLUMES, ("Updating fsd logical volume id\n")); 3387 udf_update_logvolname(ump, ump->logical_vol->logvol_id); 3388 3389 /* 3390 * Now the FSD is known, read in the rootdirectory and if one exists, 3391 * the system stream dir. Some files in the system streamdir are not 3392 * wanted in this implementation since they are not maintained. If 3393 * writing is enabled we'll delete these files if they exist. 3394 */ 3395 3396 rootdir_node = streamdir_node = NULL; 3397 dir_loc = NULL; 3398 3399 /* try to read in the rootdir */ 3400 dir_loc = &ump->fileset_desc->rootdir_icb; 3401 error = udf_get_node(ump, dir_loc, &rootdir_node); 3402 if (error) 3403 return ENOENT; 3404 3405 /* aparently it read in fine */ 3406 3407 /* 3408 * Try the system stream directory; not very likely in the ones we 3409 * test, but for completeness. 3410 */ 3411 dir_loc = &ump->fileset_desc->streamdir_icb; 3412 if (udf_rw32(dir_loc->len)) { 3413 printf("udf_read_rootdirs: streamdir defined "); 3414 error = udf_get_node(ump, dir_loc, &streamdir_node); 3415 if (error) { 3416 printf("but error in streamdir reading\n"); 3417 } else { 3418 printf("but ignored\n"); 3419 /* 3420 * TODO process streamdir `baddies' i.e. files we dont 3421 * want if R/W 3422 */ 3423 } 3424 } 3425 3426 DPRINTF(VOLUMES, ("Rootdir(s) read in fine\n")); 3427 3428 /* release the vnodes again; they'll be auto-recycled later */ 3429 if (streamdir_node) { 3430 vput(streamdir_node->vnode); 3431 } 3432 if (rootdir_node) { 3433 vput(rootdir_node->vnode); 3434 } 3435 3436 return 0; 3437 } 3438 3439 /* --------------------------------------------------------------------- */ 3440 3441 /* To make absolutely sure we are NOT returning zero, add one :) */ 3442 3443 long 3444 udf_get_node_id(const struct long_ad *icbptr) 3445 { 3446 /* ought to be enough since each mountpoint has its own chain */ 3447 return udf_rw32(icbptr->loc.lb_num) + 1; 3448 } 3449 3450 3451 int 3452 udf_compare_icb(const struct long_ad *a, const struct long_ad *b) 3453 { 3454 if (udf_rw16(a->loc.part_num) < udf_rw16(b->loc.part_num)) 3455 return -1; 3456 if (udf_rw16(a->loc.part_num) > udf_rw16(b->loc.part_num)) 3457 return 1; 3458 3459 if (udf_rw32(a->loc.lb_num) < udf_rw32(b->loc.lb_num)) 3460 return -1; 3461 if (udf_rw32(a->loc.lb_num) > udf_rw32(b->loc.lb_num)) 3462 return 1; 3463 3464 return 0; 3465 } 3466 3467 3468 static int 3469 udf_compare_rbnodes(void *ctx, const void *a, const void *b) 3470 { 3471 const struct udf_node *a_node = a; 3472 const struct udf_node *b_node = b; 3473 3474 return udf_compare_icb(&a_node->loc, &b_node->loc); 3475 } 3476 3477 3478 static int 3479 udf_compare_rbnode_icb(void *ctx, const void *a, const void *key) 3480 { 3481 const struct udf_node *a_node = a; 3482 const struct long_ad * const icb = key; 3483 3484 return udf_compare_icb(&a_node->loc, icb); 3485 } 3486 3487 3488 static const rb_tree_ops_t udf_node_rbtree_ops = { 3489 .rbto_compare_nodes = udf_compare_rbnodes, 3490 .rbto_compare_key = udf_compare_rbnode_icb, 3491 .rbto_node_offset = offsetof(struct udf_node, rbnode), 3492 .rbto_context = NULL 3493 }; 3494 3495 3496 void 3497 udf_init_nodes_tree(struct udf_mount *ump) 3498 { 3499 3500 rb_tree_init(&ump->udf_node_tree, &udf_node_rbtree_ops); 3501 } 3502 3503 3504 /* --------------------------------------------------------------------- */ 3505 3506 static int 3507 udf_validate_session_start(struct udf_mount *ump) 3508 { 3509 struct mmc_trackinfo trackinfo; 3510 struct vrs_desc *vrs; 3511 uint32_t tracknr, sessionnr, sector, sector_size; 3512 uint32_t iso9660_vrs, write_track_start; 3513 uint8_t *buffer, *blank, *pos; 3514 int blks, max_sectors, vrs_len; 3515 int error; 3516 3517 /* disc appendable? */ 3518 if (ump->discinfo.disc_state == MMC_STATE_FULL) 3519 return EROFS; 3520 3521 /* already written here? if so, there should be an ISO VDS */ 3522 if (ump->discinfo.last_session_state == MMC_STATE_INCOMPLETE) 3523 return 0; 3524 3525 /* 3526 * Check if the first track of the session is blank and if so, copy or 3527 * create a dummy ISO descriptor so the disc is valid again. 3528 */ 3529 3530 tracknr = ump->discinfo.first_track_last_session; 3531 memset(&trackinfo, 0, sizeof(struct mmc_trackinfo)); 3532 trackinfo.tracknr = tracknr; 3533 error = udf_update_trackinfo(ump, &trackinfo); 3534 if (error) 3535 return error; 3536 3537 udf_dump_trackinfo(&trackinfo); 3538 KASSERT(trackinfo.flags & (MMC_TRACKINFO_BLANK | MMC_TRACKINFO_RESERVED)); 3539 KASSERT(trackinfo.sessionnr > 1); 3540 3541 KASSERT(trackinfo.flags & MMC_TRACKINFO_NWA_VALID); 3542 write_track_start = trackinfo.next_writable; 3543 3544 /* we have to copy the ISO VRS from a former session */ 3545 DPRINTF(VOLUMES, ("validate_session_start: " 3546 "blank or reserved track, copying VRS\n")); 3547 3548 /* sessionnr should be the session we're mounting */ 3549 sessionnr = ump->mount_args.sessionnr; 3550 3551 /* start at the first track */ 3552 tracknr = ump->discinfo.first_track; 3553 while (tracknr <= ump->discinfo.num_tracks) { 3554 trackinfo.tracknr = tracknr; 3555 error = udf_update_trackinfo(ump, &trackinfo); 3556 if (error) { 3557 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3558 return error; 3559 } 3560 if (trackinfo.sessionnr == sessionnr) 3561 break; 3562 tracknr++; 3563 } 3564 if (trackinfo.sessionnr != sessionnr) { 3565 DPRINTF(VOLUMES, ("failed to get trackinfo; aborting\n")); 3566 return ENOENT; 3567 } 3568 3569 DPRINTF(VOLUMES, ("found possible former ISO VRS at\n")); 3570 udf_dump_trackinfo(&trackinfo); 3571 3572 /* 3573 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3574 * minimum ISO `sector size' 2048 3575 */ 3576 sector_size = ump->discinfo.sector_size; 3577 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3578 + trackinfo.track_start; 3579 3580 buffer = malloc(UDF_ISO_VRS_SIZE, M_TEMP, M_WAITOK); 3581 max_sectors = UDF_ISO_VRS_SIZE / sector_size; 3582 blks = MAX(1, 2048 / sector_size); 3583 3584 error = 0; 3585 for (sector = 0; sector < max_sectors; sector += blks) { 3586 pos = buffer + sector * sector_size; 3587 error = udf_read_phys_sectors(ump, UDF_C_DSCR, pos, 3588 iso9660_vrs + sector, blks); 3589 if (error) 3590 break; 3591 /* check this ISO descriptor */ 3592 vrs = (struct vrs_desc *) pos; 3593 DPRINTF(VOLUMES, ("got VRS id `%4s`\n", vrs->identifier)); 3594 if (strncmp(vrs->identifier, VRS_CD001, 5) == 0) 3595 continue; 3596 if (strncmp(vrs->identifier, VRS_CDW02, 5) == 0) 3597 continue; 3598 if (strncmp(vrs->identifier, VRS_BEA01, 5) == 0) 3599 continue; 3600 if (strncmp(vrs->identifier, VRS_NSR02, 5) == 0) 3601 continue; 3602 if (strncmp(vrs->identifier, VRS_NSR03, 5) == 0) 3603 continue; 3604 if (strncmp(vrs->identifier, VRS_TEA01, 5) == 0) 3605 break; 3606 /* now what? for now, end of sequence */ 3607 break; 3608 } 3609 vrs_len = sector + blks; 3610 if (error) { 3611 DPRINTF(VOLUMES, ("error reading old ISO VRS\n")); 3612 DPRINTF(VOLUMES, ("creating minimal ISO VRS\n")); 3613 3614 memset(buffer, 0, UDF_ISO_VRS_SIZE); 3615 3616 vrs = (struct vrs_desc *) (buffer); 3617 vrs->struct_type = 0; 3618 vrs->version = 1; 3619 memcpy(vrs->identifier,VRS_BEA01, 5); 3620 3621 vrs = (struct vrs_desc *) (buffer + 2048); 3622 vrs->struct_type = 0; 3623 vrs->version = 1; 3624 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) == 2) { 3625 memcpy(vrs->identifier,VRS_NSR02, 5); 3626 } else { 3627 memcpy(vrs->identifier,VRS_NSR03, 5); 3628 } 3629 3630 vrs = (struct vrs_desc *) (buffer + 4096); 3631 vrs->struct_type = 0; 3632 vrs->version = 1; 3633 memcpy(vrs->identifier, VRS_TEA01, 5); 3634 3635 vrs_len = 3*blks; 3636 } 3637 3638 DPRINTF(VOLUMES, ("Got VRS of %d sectors long\n", vrs_len)); 3639 3640 /* 3641 * location of iso9660 vrs is defined as first sector AFTER 32kb, 3642 * minimum ISO `sector size' 2048 3643 */ 3644 sector_size = ump->discinfo.sector_size; 3645 iso9660_vrs = ((32*1024 + sector_size - 1) / sector_size) 3646 + write_track_start; 3647 3648 /* write out 32 kb */ 3649 blank = malloc(sector_size, M_TEMP, M_WAITOK); 3650 memset(blank, 0, sector_size); 3651 error = 0; 3652 for (sector = write_track_start; sector < iso9660_vrs; sector ++) { 3653 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3654 blank, sector, 1); 3655 if (error) 3656 break; 3657 } 3658 if (!error) { 3659 /* write out our ISO VRS */ 3660 KASSERT(sector == iso9660_vrs); 3661 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, buffer, 3662 sector, vrs_len); 3663 sector += vrs_len; 3664 } 3665 if (!error) { 3666 /* fill upto the first anchor at S+256 */ 3667 for (; sector < write_track_start+256; sector++) { 3668 error = udf_write_phys_sectors(ump, UDF_C_ABSOLUTE, 3669 blank, sector, 1); 3670 if (error) 3671 break; 3672 } 3673 } 3674 if (!error) { 3675 /* write out anchor; write at ABSOLUTE place! */ 3676 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_ABSOLUTE, 3677 (union dscrptr *) ump->anchors[0], sector, sector); 3678 if (error) 3679 printf("writeout of anchor failed!\n"); 3680 } 3681 3682 free(blank, M_TEMP); 3683 free(buffer, M_TEMP); 3684 3685 if (error) 3686 printf("udf_open_session: error writing iso vrs! : " 3687 "leaving disc in compromised state!\n"); 3688 3689 /* synchronise device caches */ 3690 (void) udf_synchronise_caches(ump); 3691 3692 return error; 3693 } 3694 3695 3696 int 3697 udf_open_logvol(struct udf_mount *ump) 3698 { 3699 int logvol_integrity; 3700 int error; 3701 3702 /* already/still open? */ 3703 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3704 if (logvol_integrity == UDF_INTEGRITY_OPEN) 3705 return 0; 3706 3707 /* can we open it ? */ 3708 if (ump->vfs_mountp->mnt_flag & MNT_RDONLY) 3709 return EROFS; 3710 3711 /* setup write parameters */ 3712 DPRINTF(VOLUMES, ("Setting up write parameters\n")); 3713 if ((error = udf_setup_writeparams(ump)) != 0) 3714 return error; 3715 3716 /* determine data and metadata tracks (most likely same) */ 3717 error = udf_search_writing_tracks(ump); 3718 if (error) { 3719 /* most likely lack of space */ 3720 printf("udf_open_logvol: error searching writing tracks\n"); 3721 return EROFS; 3722 } 3723 3724 /* writeout/update lvint on disc or only in memory */ 3725 DPRINTF(VOLUMES, ("Opening logical volume\n")); 3726 if (ump->lvopen & UDF_OPEN_SESSION) { 3727 /* TODO optional track reservation opening */ 3728 error = udf_validate_session_start(ump); 3729 if (error) 3730 return error; 3731 3732 /* determine data and metadata tracks again */ 3733 error = udf_search_writing_tracks(ump); 3734 3735 if (ump->lvclose & UDF_WRITE_VAT) { 3736 /* 3737 * we writeout the VAT to get a self-sustained session 3738 * for fsck 3739 */ 3740 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3741 3742 /* write out the VAT data and all its descriptors */ 3743 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3744 udf_writeout_vat(ump); 3745 3746 /* force everything to be synchronized on the device */ 3747 (void) udf_synchronise_caches(ump); 3748 } 3749 } 3750 3751 /* mark it open */ 3752 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_OPEN); 3753 3754 /* do we need to write it out? */ 3755 if (ump->lvopen & UDF_WRITE_LVINT) { 3756 error = udf_writeout_lvint(ump, ump->lvopen); 3757 /* if we couldn't write it mark it closed again */ 3758 if (error) { 3759 ump->logvol_integrity->integrity_type = 3760 udf_rw32(UDF_INTEGRITY_CLOSED); 3761 return error; 3762 } 3763 } 3764 3765 return 0; 3766 } 3767 3768 3769 int 3770 udf_close_logvol(struct udf_mount *ump, int mntflags) 3771 { 3772 struct vnode *devvp = ump->devvp; 3773 struct mmc_op mmc_op; 3774 int logvol_integrity; 3775 int error = 0, error1 = 0, error2 = 0; 3776 int tracknr; 3777 int nvats, n, nok; 3778 3779 /* already/still closed? */ 3780 logvol_integrity = udf_rw32(ump->logvol_integrity->integrity_type); 3781 if (logvol_integrity == UDF_INTEGRITY_CLOSED) 3782 return 0; 3783 3784 /* writeout/update lvint or write out VAT */ 3785 DPRINTF(VOLUMES, ("udf_close_logvol: closing logical volume\n")); 3786 #ifdef DIAGNOSTIC 3787 if (ump->lvclose & UDF_CLOSE_SESSION) 3788 KASSERT(ump->lvclose & UDF_WRITE_VAT); 3789 #endif 3790 3791 if (ump->lvclose & UDF_WRITE_VAT) { 3792 DPRINTF(VOLUMES, ("lvclose & UDF_WRITE_VAT\n")); 3793 3794 /* write out the VAT data and all its descriptors */ 3795 DPRINTF(VOLUMES, ("writeout vat_node\n")); 3796 udf_writeout_vat(ump); 3797 3798 /* at least two DVD packets and 3 CD-R packets */ 3799 nvats = 32; 3800 3801 #if notyet 3802 /* 3803 * TODO calculate the available space and if the disc is 3804 * allmost full, write out till end-256-1 with banks, write 3805 * AVDP and fill up with VATs, then close session and close 3806 * disc. 3807 */ 3808 if (ump->lvclose & UDF_FINALISE_DISC) { 3809 error = udf_write_phys_dscr_sync(ump, NULL, 3810 UDF_C_FLOAT_DSCR, 3811 (union dscrptr *) ump->anchors[0], 3812 0, 0); 3813 if (error) 3814 printf("writeout of anchor failed!\n"); 3815 3816 /* pad space with VAT ICBs */ 3817 nvats = 256; 3818 } 3819 #endif 3820 3821 /* write out a number of VAT nodes */ 3822 nok = 0; 3823 for (n = 0; n < nvats; n++) { 3824 /* will now only write last FE/EFE */ 3825 ump->vat_node->i_flags |= IN_MODIFIED; 3826 error = VOP_FSYNC(ump->vat_node->vnode, 3827 FSCRED, FSYNC_WAIT, 0, 0); 3828 if (!error) 3829 nok++; 3830 } 3831 /* force everything to be synchronized on the device */ 3832 (void) udf_synchronise_caches(ump); 3833 3834 if (nok < 14) { 3835 /* arbitrary; but at least one or two CD frames */ 3836 printf("writeout of at least 14 VATs failed\n"); 3837 return error; 3838 } 3839 } 3840 3841 /* NOTE the disc is in a (minimal) valid state now; no erroring out */ 3842 3843 /* finish closing of session */ 3844 if (ump->lvclose & UDF_CLOSE_SESSION) { 3845 DPRINTF(VOLUMES, ("udf_close_logvol: closing session " 3846 "as requested\n")); 3847 error = udf_validate_session_start(ump); 3848 if (error) 3849 return error; 3850 3851 (void) udf_synchronise_caches(ump); 3852 3853 /* close all associated tracks */ 3854 tracknr = ump->discinfo.first_track_last_session; 3855 error = 0; 3856 while (tracknr <= ump->discinfo.last_track_last_session) { 3857 DPRINTF(VOLUMES, ("\tclosing possible open " 3858 "track %d\n", tracknr)); 3859 memset(&mmc_op, 0, sizeof(mmc_op)); 3860 mmc_op.operation = MMC_OP_CLOSETRACK; 3861 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3862 mmc_op.tracknr = tracknr; 3863 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3864 FKIOCTL, NOCRED); 3865 if (error) 3866 printf("udf_close_logvol: closing of " 3867 "track %d failed\n", tracknr); 3868 tracknr ++; 3869 } 3870 if (!error) { 3871 DPRINTF(VOLUMES, ("closing session\n")); 3872 memset(&mmc_op, 0, sizeof(mmc_op)); 3873 mmc_op.operation = MMC_OP_CLOSESESSION; 3874 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3875 mmc_op.sessionnr = ump->discinfo.num_sessions; 3876 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3877 FKIOCTL, NOCRED); 3878 if (error) 3879 printf("udf_close_logvol: closing of session" 3880 "failed\n"); 3881 } 3882 if (!error) 3883 ump->lvopen |= UDF_OPEN_SESSION; 3884 if (error) { 3885 printf("udf_close_logvol: leaving disc as it is\n"); 3886 ump->lvclose &= ~UDF_FINALISE_DISC; 3887 } 3888 } 3889 3890 if (ump->lvclose & UDF_FINALISE_DISC) { 3891 memset(&mmc_op, 0, sizeof(mmc_op)); 3892 mmc_op.operation = MMC_OP_FINALISEDISC; 3893 mmc_op.mmc_profile = ump->discinfo.mmc_profile; 3894 mmc_op.sessionnr = ump->discinfo.num_sessions; 3895 error = VOP_IOCTL(devvp, MMCOP, &mmc_op, 3896 FKIOCTL, NOCRED); 3897 if (error) 3898 printf("udf_close_logvol: finalising disc" 3899 "failed\n"); 3900 } 3901 3902 /* write out partition bitmaps if requested */ 3903 if (ump->lvclose & UDF_WRITE_PART_BITMAPS) { 3904 /* sync writeout metadata spacetable if existing */ 3905 error1 = udf_write_metadata_partition_spacetable(ump, true); 3906 if (error1) 3907 printf( "udf_close_logvol: writeout of metadata space " 3908 "bitmap failed\n"); 3909 3910 /* sync writeout partition spacetables */ 3911 error2 = udf_write_physical_partition_spacetables(ump, true); 3912 if (error2) 3913 printf( "udf_close_logvol: writeout of space tables " 3914 "failed\n"); 3915 3916 if (error1 || error2) 3917 return (error1 | error2); 3918 3919 ump->lvclose &= ~UDF_WRITE_PART_BITMAPS; 3920 } 3921 3922 /* write out metadata partition nodes if requested */ 3923 if (ump->lvclose & UDF_WRITE_METAPART_NODES) { 3924 /* sync writeout metadata descriptor node */ 3925 error1 = udf_writeout_node(ump->metadata_node, FSYNC_WAIT); 3926 if (error1) 3927 printf( "udf_close_logvol: writeout of metadata partition " 3928 "node failed\n"); 3929 3930 /* duplicate metadata partition descriptor if needed */ 3931 udf_synchronise_metadatamirror_node(ump); 3932 3933 /* sync writeout metadatamirror descriptor node */ 3934 error2 = udf_writeout_node(ump->metadatamirror_node, FSYNC_WAIT); 3935 if (error2) 3936 printf( "udf_close_logvol: writeout of metadata partition " 3937 "mirror node failed\n"); 3938 3939 if (error1 || error2) 3940 return (error1 | error2); 3941 3942 ump->lvclose &= ~UDF_WRITE_METAPART_NODES; 3943 } 3944 3945 /* mark it closed */ 3946 ump->logvol_integrity->integrity_type = udf_rw32(UDF_INTEGRITY_CLOSED); 3947 3948 /* do we need to write out the logical volume integrity? */ 3949 if (ump->lvclose & UDF_WRITE_LVINT) 3950 error = udf_writeout_lvint(ump, ump->lvopen); 3951 if (error) { 3952 /* HELP now what? mark it open again for now */ 3953 ump->logvol_integrity->integrity_type = 3954 udf_rw32(UDF_INTEGRITY_OPEN); 3955 return error; 3956 } 3957 3958 (void) udf_synchronise_caches(ump); 3959 3960 return 0; 3961 } 3962 3963 /* --------------------------------------------------------------------- */ 3964 3965 /* 3966 * Genfs interfacing 3967 * 3968 * static const struct genfs_ops udf_genfsops = { 3969 * .gop_size = genfs_size, 3970 * size of transfers 3971 * .gop_alloc = udf_gop_alloc, 3972 * allocate len bytes at offset 3973 * .gop_write = genfs_gop_write, 3974 * putpages interface code 3975 * .gop_markupdate = udf_gop_markupdate, 3976 * set update/modify flags etc. 3977 * } 3978 */ 3979 3980 /* 3981 * Genfs interface. These four functions are the only ones defined though not 3982 * documented... great.... 3983 */ 3984 3985 /* 3986 * Called for allocating an extent of the file either by VOP_WRITE() or by 3987 * genfs filling up gaps. 3988 */ 3989 static int 3990 udf_gop_alloc(struct vnode *vp, off_t off, 3991 off_t len, int flags, kauth_cred_t cred) 3992 { 3993 struct udf_node *udf_node = VTOI(vp); 3994 struct udf_mount *ump = udf_node->ump; 3995 uint64_t lb_start, lb_end; 3996 uint32_t lb_size, num_lb; 3997 int udf_c_type, vpart_num, can_fail; 3998 int error; 3999 4000 DPRINTF(ALLOC, ("udf_gop_alloc called for offset %"PRIu64" for %"PRIu64" bytes, %s\n", 4001 off, len, flags? "SYNC":"NONE")); 4002 4003 /* 4004 * request the pages of our vnode and see how many pages will need to 4005 * be allocated and reserve that space 4006 */ 4007 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 4008 lb_start = off / lb_size; 4009 lb_end = (off + len + lb_size -1) / lb_size; 4010 num_lb = lb_end - lb_start; 4011 4012 udf_c_type = udf_get_c_type(udf_node); 4013 vpart_num = udf_get_record_vpart(ump, udf_c_type); 4014 4015 /* all requests can fail */ 4016 can_fail = true; 4017 4018 /* fid's (directories) can't fail */ 4019 if (udf_c_type == UDF_C_FIDS) 4020 can_fail = false; 4021 4022 /* system files can't fail */ 4023 if (vp->v_vflag & VV_SYSTEM) 4024 can_fail = false; 4025 4026 error = udf_reserve_space(ump, udf_node, udf_c_type, 4027 vpart_num, num_lb, can_fail); 4028 4029 DPRINTF(ALLOC, ("\tlb_start %"PRIu64", lb_end %"PRIu64", num_lb %d\n", 4030 lb_start, lb_end, num_lb)); 4031 4032 return error; 4033 } 4034 4035 4036 /* 4037 * callback from genfs to update our flags 4038 */ 4039 static void 4040 udf_gop_markupdate(struct vnode *vp, int flags) 4041 { 4042 struct udf_node *udf_node = VTOI(vp); 4043 u_long mask = 0; 4044 4045 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 4046 mask = IN_ACCESS; 4047 } 4048 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 4049 if (vp->v_type == VREG) { 4050 mask |= IN_CHANGE | IN_UPDATE; 4051 } else { 4052 mask |= IN_MODIFY; 4053 } 4054 } 4055 if (mask) { 4056 udf_node->i_flags |= mask; 4057 } 4058 } 4059 4060 4061 static const struct genfs_ops udf_genfsops = { 4062 .gop_size = genfs_size, 4063 .gop_alloc = udf_gop_alloc, 4064 .gop_write = genfs_gop_write_rwmap, 4065 .gop_markupdate = udf_gop_markupdate, 4066 .gop_putrange = genfs_gop_putrange, 4067 }; 4068 4069 4070 /* --------------------------------------------------------------------- */ 4071 4072 int 4073 udf_write_terminator(struct udf_mount *ump, uint32_t sector) 4074 { 4075 union dscrptr *dscr; 4076 int error; 4077 4078 dscr = malloc(ump->discinfo.sector_size, M_TEMP, M_WAITOK|M_ZERO); 4079 udf_inittag(ump, &dscr->tag, TAGID_TERM, sector); 4080 4081 /* CRC length for an anchor is 512 - tag length; defined in Ecma 167 */ 4082 dscr->tag.desc_crc_len = udf_rw16(512-UDF_DESC_TAG_LENGTH); 4083 (void) udf_validate_tag_and_crc_sums(dscr); 4084 4085 error = udf_write_phys_dscr_sync(ump, NULL, UDF_C_DSCR, 4086 dscr, sector, sector); 4087 4088 free(dscr, M_TEMP); 4089 4090 return error; 4091 } 4092 4093 4094 /* --------------------------------------------------------------------- */ 4095 4096 /* UDF<->unix converters */ 4097 4098 /* --------------------------------------------------------------------- */ 4099 4100 static mode_t 4101 udf_perm_to_unix_mode(uint32_t perm) 4102 { 4103 mode_t mode; 4104 4105 mode = ((perm & UDF_FENTRY_PERM_USER_MASK) ); 4106 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK ) >> 2); 4107 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); 4108 4109 return mode; 4110 } 4111 4112 /* --------------------------------------------------------------------- */ 4113 4114 static uint32_t 4115 unix_mode_to_udf_perm(mode_t mode) 4116 { 4117 uint32_t perm; 4118 4119 perm = ((mode & S_IRWXO) ); 4120 perm |= ((mode & S_IRWXG) << 2); 4121 perm |= ((mode & S_IRWXU) << 4); 4122 perm |= ((mode & S_IWOTH) << 3); 4123 perm |= ((mode & S_IWGRP) << 5); 4124 perm |= ((mode & S_IWUSR) << 7); 4125 4126 return perm; 4127 } 4128 4129 /* --------------------------------------------------------------------- */ 4130 4131 static uint32_t 4132 udf_icb_to_unix_filetype(uint32_t icbftype) 4133 { 4134 switch (icbftype) { 4135 case UDF_ICB_FILETYPE_DIRECTORY : 4136 case UDF_ICB_FILETYPE_STREAMDIR : 4137 return S_IFDIR; 4138 case UDF_ICB_FILETYPE_FIFO : 4139 return S_IFIFO; 4140 case UDF_ICB_FILETYPE_CHARDEVICE : 4141 return S_IFCHR; 4142 case UDF_ICB_FILETYPE_BLOCKDEVICE : 4143 return S_IFBLK; 4144 case UDF_ICB_FILETYPE_RANDOMACCESS : 4145 case UDF_ICB_FILETYPE_REALTIME : 4146 return S_IFREG; 4147 case UDF_ICB_FILETYPE_SYMLINK : 4148 return S_IFLNK; 4149 case UDF_ICB_FILETYPE_SOCKET : 4150 return S_IFSOCK; 4151 } 4152 /* no idea what this is */ 4153 return 0; 4154 } 4155 4156 /* --------------------------------------------------------------------- */ 4157 4158 void 4159 udf_to_unix_name(char *result, int result_len, char *id, int len, 4160 struct charspec *chsp) 4161 { 4162 uint16_t *raw_name, *unix_name; 4163 uint16_t *inchp, ch; 4164 uint8_t *outchp; 4165 const char *osta_id = "OSTA Compressed Unicode"; 4166 int ucode_chars, nice_uchars, is_osta_typ0, nout; 4167 4168 raw_name = malloc(2048 * sizeof(uint16_t), M_UDFTEMP, M_WAITOK); 4169 unix_name = raw_name + 1024; /* split space in half */ 4170 assert(sizeof(char) == sizeof(uint8_t)); 4171 outchp = (uint8_t *) result; 4172 4173 is_osta_typ0 = (chsp->type == 0); 4174 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4175 if (is_osta_typ0) { 4176 /* TODO clean up */ 4177 *raw_name = *unix_name = 0; 4178 ucode_chars = udf_UncompressUnicode(len, (uint8_t *) id, raw_name); 4179 ucode_chars = MIN(ucode_chars, UnicodeLength((unicode_t *) raw_name)); 4180 nice_uchars = UDFTransName(unix_name, raw_name, ucode_chars); 4181 /* output UTF8 */ 4182 for (inchp = unix_name; nice_uchars>0; inchp++, nice_uchars--) { 4183 ch = *inchp; 4184 nout = wput_utf8(outchp, result_len, ch); 4185 outchp += nout; result_len -= nout; 4186 if (!ch) break; 4187 } 4188 *outchp++ = 0; 4189 } else { 4190 /* assume 8bit char length byte latin-1 */ 4191 assert(*id == 8); 4192 assert(strlen((char *) (id+1)) <= NAME_MAX); 4193 strncpy((char *) result, (char *) (id+1), strlen((char *) (id+1))); 4194 } 4195 free(raw_name, M_UDFTEMP); 4196 } 4197 4198 /* --------------------------------------------------------------------- */ 4199 4200 void 4201 unix_to_udf_name(char *result, uint8_t *result_len, char const *name, int name_len, 4202 struct charspec *chsp) 4203 { 4204 uint16_t *raw_name; 4205 uint16_t *outchp; 4206 const char *inchp; 4207 const char *osta_id = "OSTA Compressed Unicode"; 4208 int udf_chars, is_osta_typ0, bits; 4209 size_t cnt; 4210 4211 /* allocate temporary unicode-16 buffer */ 4212 raw_name = malloc(1024, M_UDFTEMP, M_WAITOK); 4213 4214 /* convert utf8 to unicode-16 */ 4215 *raw_name = 0; 4216 inchp = name; 4217 outchp = raw_name; 4218 bits = 8; 4219 for (cnt = name_len, udf_chars = 0; cnt;) { 4220 *outchp = wget_utf8(&inchp, &cnt); 4221 if (*outchp > 0xff) 4222 bits=16; 4223 outchp++; 4224 udf_chars++; 4225 } 4226 /* null terminate just in case */ 4227 *outchp++ = 0; 4228 4229 is_osta_typ0 = (chsp->type == 0); 4230 is_osta_typ0 &= (strcmp((char *) chsp->inf, osta_id) == 0); 4231 if (is_osta_typ0) { 4232 udf_chars = udf_CompressUnicode(udf_chars, bits, 4233 (unicode_t *) raw_name, 4234 (byte *) result); 4235 } else { 4236 printf("unix to udf name: no CHSP0 ?\n"); 4237 /* XXX assume 8bit char length byte latin-1 */ 4238 *result++ = 8; udf_chars = 1; 4239 strncpy(result, name + 1, name_len); 4240 udf_chars += name_len; 4241 } 4242 *result_len = udf_chars; 4243 free(raw_name, M_UDFTEMP); 4244 } 4245 4246 /* --------------------------------------------------------------------- */ 4247 4248 void 4249 udf_timestamp_to_timespec(struct udf_mount *ump, 4250 struct timestamp *timestamp, 4251 struct timespec *timespec) 4252 { 4253 struct clock_ymdhms ymdhms; 4254 uint32_t usecs, secs, nsecs; 4255 uint16_t tz; 4256 4257 /* fill in ymdhms structure from timestamp */ 4258 memset(&ymdhms, 0, sizeof(ymdhms)); 4259 ymdhms.dt_year = udf_rw16(timestamp->year); 4260 ymdhms.dt_mon = timestamp->month; 4261 ymdhms.dt_day = timestamp->day; 4262 ymdhms.dt_wday = 0; /* ? */ 4263 ymdhms.dt_hour = timestamp->hour; 4264 ymdhms.dt_min = timestamp->minute; 4265 ymdhms.dt_sec = timestamp->second; 4266 4267 secs = clock_ymdhms_to_secs(&ymdhms); 4268 usecs = timestamp->usec + 4269 100*timestamp->hund_usec + 10000*timestamp->centisec; 4270 nsecs = usecs * 1000; 4271 4272 /* 4273 * Calculate the time zone. The timezone is 12 bit signed 2's 4274 * compliment, so we gotta do some extra magic to handle it right. 4275 */ 4276 tz = udf_rw16(timestamp->type_tz); 4277 tz &= 0x0fff; /* only lower 12 bits are significant */ 4278 if (tz & 0x0800) /* sign extention */ 4279 tz |= 0xf000; 4280 4281 /* TODO check timezone conversion */ 4282 /* check if we are specified a timezone to convert */ 4283 if (udf_rw16(timestamp->type_tz) & 0x1000) { 4284 if ((int16_t) tz != -2047) 4285 secs -= (int16_t) tz * 60; 4286 } else { 4287 secs -= ump->mount_args.gmtoff; 4288 } 4289 4290 timespec->tv_sec = secs; 4291 timespec->tv_nsec = nsecs; 4292 } 4293 4294 4295 void 4296 udf_timespec_to_timestamp(struct timespec *timespec, struct timestamp *timestamp) 4297 { 4298 struct clock_ymdhms ymdhms; 4299 uint32_t husec, usec, csec; 4300 4301 (void) clock_secs_to_ymdhms(timespec->tv_sec, &ymdhms); 4302 4303 usec = timespec->tv_nsec / 1000; 4304 husec = usec / 100; 4305 usec -= husec * 100; /* only 0-99 in usec */ 4306 csec = husec / 100; /* only 0-99 in csec */ 4307 husec -= csec * 100; /* only 0-99 in husec */ 4308 4309 /* set method 1 for CUT/GMT */ 4310 timestamp->type_tz = udf_rw16((1<<12) + 0); 4311 timestamp->year = udf_rw16(ymdhms.dt_year); 4312 timestamp->month = ymdhms.dt_mon; 4313 timestamp->day = ymdhms.dt_day; 4314 timestamp->hour = ymdhms.dt_hour; 4315 timestamp->minute = ymdhms.dt_min; 4316 timestamp->second = ymdhms.dt_sec; 4317 timestamp->centisec = csec; 4318 timestamp->hund_usec = husec; 4319 timestamp->usec = usec; 4320 } 4321 4322 /* --------------------------------------------------------------------- */ 4323 4324 /* 4325 * Attribute and filetypes converters with get/set pairs 4326 */ 4327 4328 uint32_t 4329 udf_getaccessmode(struct udf_node *udf_node) 4330 { 4331 struct file_entry *fe = udf_node->fe; 4332 struct extfile_entry *efe = udf_node->efe; 4333 uint32_t udf_perm, icbftype; 4334 uint32_t mode, ftype; 4335 uint16_t icbflags; 4336 4337 UDF_LOCK_NODE(udf_node, 0); 4338 if (fe) { 4339 udf_perm = udf_rw32(fe->perm); 4340 icbftype = fe->icbtag.file_type; 4341 icbflags = udf_rw16(fe->icbtag.flags); 4342 } else { 4343 assert(udf_node->efe); 4344 udf_perm = udf_rw32(efe->perm); 4345 icbftype = efe->icbtag.file_type; 4346 icbflags = udf_rw16(efe->icbtag.flags); 4347 } 4348 4349 mode = udf_perm_to_unix_mode(udf_perm); 4350 ftype = udf_icb_to_unix_filetype(icbftype); 4351 4352 /* set suid, sgid, sticky from flags in fe/efe */ 4353 if (icbflags & UDF_ICB_TAG_FLAGS_SETUID) 4354 mode |= S_ISUID; 4355 if (icbflags & UDF_ICB_TAG_FLAGS_SETGID) 4356 mode |= S_ISGID; 4357 if (icbflags & UDF_ICB_TAG_FLAGS_STICKY) 4358 mode |= S_ISVTX; 4359 4360 UDF_UNLOCK_NODE(udf_node, 0); 4361 4362 return mode | ftype; 4363 } 4364 4365 4366 void 4367 udf_setaccessmode(struct udf_node *udf_node, mode_t mode) 4368 { 4369 struct file_entry *fe = udf_node->fe; 4370 struct extfile_entry *efe = udf_node->efe; 4371 uint32_t udf_perm; 4372 uint16_t icbflags; 4373 4374 UDF_LOCK_NODE(udf_node, 0); 4375 udf_perm = unix_mode_to_udf_perm(mode & ALLPERMS); 4376 if (fe) { 4377 icbflags = udf_rw16(fe->icbtag.flags); 4378 } else { 4379 icbflags = udf_rw16(efe->icbtag.flags); 4380 } 4381 4382 icbflags &= ~UDF_ICB_TAG_FLAGS_SETUID; 4383 icbflags &= ~UDF_ICB_TAG_FLAGS_SETGID; 4384 icbflags &= ~UDF_ICB_TAG_FLAGS_STICKY; 4385 if (mode & S_ISUID) 4386 icbflags |= UDF_ICB_TAG_FLAGS_SETUID; 4387 if (mode & S_ISGID) 4388 icbflags |= UDF_ICB_TAG_FLAGS_SETGID; 4389 if (mode & S_ISVTX) 4390 icbflags |= UDF_ICB_TAG_FLAGS_STICKY; 4391 4392 if (fe) { 4393 fe->perm = udf_rw32(udf_perm); 4394 fe->icbtag.flags = udf_rw16(icbflags); 4395 } else { 4396 efe->perm = udf_rw32(udf_perm); 4397 efe->icbtag.flags = udf_rw16(icbflags); 4398 } 4399 4400 UDF_UNLOCK_NODE(udf_node, 0); 4401 } 4402 4403 4404 void 4405 udf_getownership(struct udf_node *udf_node, uid_t *uidp, gid_t *gidp) 4406 { 4407 struct udf_mount *ump = udf_node->ump; 4408 struct file_entry *fe = udf_node->fe; 4409 struct extfile_entry *efe = udf_node->efe; 4410 uid_t uid; 4411 gid_t gid; 4412 4413 UDF_LOCK_NODE(udf_node, 0); 4414 if (fe) { 4415 uid = (uid_t)udf_rw32(fe->uid); 4416 gid = (gid_t)udf_rw32(fe->gid); 4417 } else { 4418 assert(udf_node->efe); 4419 uid = (uid_t)udf_rw32(efe->uid); 4420 gid = (gid_t)udf_rw32(efe->gid); 4421 } 4422 4423 /* do the uid/gid translation game */ 4424 if (uid == (uid_t) -1) 4425 uid = ump->mount_args.anon_uid; 4426 if (gid == (gid_t) -1) 4427 gid = ump->mount_args.anon_gid; 4428 4429 *uidp = uid; 4430 *gidp = gid; 4431 4432 UDF_UNLOCK_NODE(udf_node, 0); 4433 } 4434 4435 4436 void 4437 udf_setownership(struct udf_node *udf_node, uid_t uid, gid_t gid) 4438 { 4439 struct udf_mount *ump = udf_node->ump; 4440 struct file_entry *fe = udf_node->fe; 4441 struct extfile_entry *efe = udf_node->efe; 4442 uid_t nobody_uid; 4443 gid_t nobody_gid; 4444 4445 UDF_LOCK_NODE(udf_node, 0); 4446 4447 /* do the uid/gid translation game */ 4448 nobody_uid = ump->mount_args.nobody_uid; 4449 nobody_gid = ump->mount_args.nobody_gid; 4450 if (uid == nobody_uid) 4451 uid = (uid_t) -1; 4452 if (gid == nobody_gid) 4453 gid = (gid_t) -1; 4454 4455 if (fe) { 4456 fe->uid = udf_rw32((uint32_t) uid); 4457 fe->gid = udf_rw32((uint32_t) gid); 4458 } else { 4459 efe->uid = udf_rw32((uint32_t) uid); 4460 efe->gid = udf_rw32((uint32_t) gid); 4461 } 4462 4463 UDF_UNLOCK_NODE(udf_node, 0); 4464 } 4465 4466 4467 /* --------------------------------------------------------------------- */ 4468 4469 4470 int 4471 udf_dirhash_fill(struct udf_node *dir_node) 4472 { 4473 struct vnode *dvp = dir_node->vnode; 4474 struct dirhash *dirh; 4475 struct file_entry *fe = dir_node->fe; 4476 struct extfile_entry *efe = dir_node->efe; 4477 struct fileid_desc *fid; 4478 struct dirent *dirent; 4479 uint64_t file_size, pre_diroffset, diroffset; 4480 uint32_t lb_size; 4481 int error; 4482 4483 /* make sure we have a dirhash to work on */ 4484 dirh = dir_node->dir_hash; 4485 KASSERT(dirh); 4486 KASSERT(dirh->refcnt > 0); 4487 4488 if (dirh->flags & DIRH_BROKEN) 4489 return EIO; 4490 if (dirh->flags & DIRH_COMPLETE) 4491 return 0; 4492 4493 /* make sure we have a clean dirhash to add to */ 4494 dirhash_purge_entries(dirh); 4495 4496 /* get directory filesize */ 4497 if (fe) { 4498 file_size = udf_rw64(fe->inf_len); 4499 } else { 4500 assert(efe); 4501 file_size = udf_rw64(efe->inf_len); 4502 } 4503 4504 /* allocate temporary space for fid */ 4505 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4506 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4507 4508 /* allocate temporary space for dirent */ 4509 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4510 4511 error = 0; 4512 diroffset = 0; 4513 while (diroffset < file_size) { 4514 /* transfer a new fid/dirent */ 4515 pre_diroffset = diroffset; 4516 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4517 if (error) { 4518 /* TODO what to do? continue but not add? */ 4519 dirh->flags |= DIRH_BROKEN; 4520 dirhash_purge_entries(dirh); 4521 break; 4522 } 4523 4524 if ((fid->file_char & UDF_FILE_CHAR_DEL)) { 4525 /* register deleted extent for reuse */ 4526 dirhash_enter_freed(dirh, pre_diroffset, 4527 udf_fidsize(fid)); 4528 } else { 4529 /* append to the dirhash */ 4530 dirhash_enter(dirh, dirent, pre_diroffset, 4531 udf_fidsize(fid), 0); 4532 } 4533 } 4534 dirh->flags |= DIRH_COMPLETE; 4535 4536 free(fid, M_UDFTEMP); 4537 free(dirent, M_UDFTEMP); 4538 4539 return error; 4540 } 4541 4542 4543 /* --------------------------------------------------------------------- */ 4544 4545 /* 4546 * Directory read and manipulation functions. 4547 * 4548 */ 4549 4550 int 4551 udf_lookup_name_in_dir(struct vnode *vp, const char *name, int namelen, 4552 struct long_ad *icb_loc, int *found) 4553 { 4554 struct udf_node *dir_node = VTOI(vp); 4555 struct dirhash *dirh; 4556 struct dirhash_entry *dirh_ep; 4557 struct fileid_desc *fid; 4558 struct dirent *dirent, *s_dirent; 4559 struct charspec osta_charspec; 4560 uint64_t diroffset; 4561 uint32_t lb_size; 4562 int hit, error; 4563 4564 /* set default return */ 4565 *found = 0; 4566 4567 /* get our dirhash and make sure its read in */ 4568 dirhash_get(&dir_node->dir_hash); 4569 error = udf_dirhash_fill(dir_node); 4570 if (error) { 4571 dirhash_put(dir_node->dir_hash); 4572 return error; 4573 } 4574 dirh = dir_node->dir_hash; 4575 4576 /* allocate temporary space for fid */ 4577 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4578 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4579 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4580 s_dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4581 4582 DPRINTF(DIRHASH, ("dirhash_lookup looking for `%*.*s`\n", 4583 namelen, namelen, name)); 4584 4585 /* convert given unix name to canonical unix name */ 4586 udf_osta_charset(&osta_charspec); 4587 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4588 name, namelen, &osta_charspec); 4589 udf_to_unix_name(s_dirent->d_name, NAME_MAX, 4590 (char *) fid->data, fid->l_fi, 4591 &osta_charspec); 4592 s_dirent->d_namlen = strlen(s_dirent->d_name); 4593 4594 /* search our dirhash hits */ 4595 memset(icb_loc, 0, sizeof(*icb_loc)); 4596 dirh_ep = NULL; 4597 for (;;) { 4598 hit = dirhash_lookup(dirh, s_dirent->d_name, s_dirent->d_namlen, &dirh_ep); 4599 /* if no hit, abort the search */ 4600 if (!hit) 4601 break; 4602 4603 /* check this hit */ 4604 diroffset = dirh_ep->offset; 4605 4606 /* transfer a new fid/dirent */ 4607 error = udf_read_fid_stream(vp, &diroffset, fid, dirent); 4608 if (error) 4609 break; 4610 4611 DPRINTF(DIRHASH, ("dirhash_lookup\tchecking `%*.*s`\n", 4612 dirent->d_namlen, dirent->d_namlen, dirent->d_name)); 4613 4614 /* see if its our entry */ 4615 if (strncmp(dirent->d_name, s_dirent->d_name, s_dirent->d_namlen) == 0) { 4616 *found = 1; 4617 *icb_loc = fid->icb; 4618 break; 4619 } 4620 } 4621 free(fid, M_UDFTEMP); 4622 free(dirent, M_UDFTEMP); 4623 free(s_dirent, M_UDFTEMP); 4624 4625 dirhash_put(dir_node->dir_hash); 4626 4627 return error; 4628 } 4629 4630 /* --------------------------------------------------------------------- */ 4631 4632 static int 4633 udf_create_new_fe(struct udf_mount *ump, struct file_entry *fe, int file_type, 4634 struct long_ad *node_icb, struct long_ad *parent_icb, 4635 uint64_t parent_unique_id) 4636 { 4637 struct timespec now; 4638 struct icb_tag *icb; 4639 struct filetimes_extattr_entry *ft_extattr; 4640 uint64_t unique_id; 4641 uint32_t fidsize, lb_num; 4642 uint8_t *bpos; 4643 int crclen, attrlen; 4644 4645 lb_num = udf_rw32(node_icb->loc.lb_num); 4646 udf_inittag(ump, &fe->tag, TAGID_FENTRY, lb_num); 4647 icb = &fe->icbtag; 4648 4649 /* 4650 * Always use strategy type 4 unless on WORM wich we don't support 4651 * (yet). Fill in defaults and set for internal allocation of data. 4652 */ 4653 icb->strat_type = udf_rw16(4); 4654 icb->max_num_entries = udf_rw16(1); 4655 icb->file_type = file_type; /* 8 bit */ 4656 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4657 4658 fe->perm = udf_rw32(0x7fff); /* all is allowed */ 4659 fe->link_cnt = udf_rw16(0); /* explicit setting */ 4660 4661 fe->ckpoint = udf_rw32(1); /* user supplied file version */ 4662 4663 vfs_timestamp(&now); 4664 udf_timespec_to_timestamp(&now, &fe->atime); 4665 udf_timespec_to_timestamp(&now, &fe->attrtime); 4666 udf_timespec_to_timestamp(&now, &fe->mtime); 4667 4668 udf_set_regid(&fe->imp_id, IMPL_NAME); 4669 udf_add_impl_regid(ump, &fe->imp_id); 4670 4671 unique_id = udf_advance_uniqueid(ump); 4672 fe->unique_id = udf_rw64(unique_id); 4673 fe->l_ea = udf_rw32(0); 4674 4675 /* create extended attribute to record our creation time */ 4676 attrlen = UDF_FILETIMES_ATTR_SIZE(1); 4677 ft_extattr = malloc(attrlen, M_UDFTEMP, M_WAITOK); 4678 memset(ft_extattr, 0, attrlen); 4679 ft_extattr->hdr.type = udf_rw32(UDF_FILETIMES_ATTR_NO); 4680 ft_extattr->hdr.subtype = 1; /* [4/48.10.5] */ 4681 ft_extattr->hdr.a_l = udf_rw32(UDF_FILETIMES_ATTR_SIZE(1)); 4682 ft_extattr->d_l = udf_rw32(UDF_TIMESTAMP_SIZE); /* one item */ 4683 ft_extattr->existence = UDF_FILETIMES_FILE_CREATION; 4684 udf_timespec_to_timestamp(&now, &ft_extattr->times[0]); 4685 4686 udf_extattr_insert_internal(ump, (union dscrptr *) fe, 4687 (struct extattr_entry *) ft_extattr); 4688 free(ft_extattr, M_UDFTEMP); 4689 4690 /* if its a directory, create '..' */ 4691 bpos = (uint8_t *) fe->data + udf_rw32(fe->l_ea); 4692 fidsize = 0; 4693 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4694 fidsize = udf_create_parentfid(ump, 4695 (struct fileid_desc *) bpos, parent_icb, 4696 parent_unique_id); 4697 } 4698 4699 /* record fidlength information */ 4700 fe->inf_len = udf_rw64(fidsize); 4701 fe->l_ad = udf_rw32(fidsize); 4702 fe->logblks_rec = udf_rw64(0); /* intern */ 4703 4704 crclen = sizeof(struct file_entry) - 1 - UDF_DESC_TAG_LENGTH; 4705 crclen += udf_rw32(fe->l_ea) + fidsize; 4706 fe->tag.desc_crc_len = udf_rw16(crclen); 4707 4708 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fe); 4709 4710 return fidsize; 4711 } 4712 4713 /* --------------------------------------------------------------------- */ 4714 4715 static int 4716 udf_create_new_efe(struct udf_mount *ump, struct extfile_entry *efe, 4717 int file_type, struct long_ad *node_icb, struct long_ad *parent_icb, 4718 uint64_t parent_unique_id) 4719 { 4720 struct timespec now; 4721 struct icb_tag *icb; 4722 uint64_t unique_id; 4723 uint32_t fidsize, lb_num; 4724 uint8_t *bpos; 4725 int crclen; 4726 4727 lb_num = udf_rw32(node_icb->loc.lb_num); 4728 udf_inittag(ump, &efe->tag, TAGID_EXTFENTRY, lb_num); 4729 icb = &efe->icbtag; 4730 4731 /* 4732 * Always use strategy type 4 unless on WORM wich we don't support 4733 * (yet). Fill in defaults and set for internal allocation of data. 4734 */ 4735 icb->strat_type = udf_rw16(4); 4736 icb->max_num_entries = udf_rw16(1); 4737 icb->file_type = file_type; /* 8 bit */ 4738 icb->flags = udf_rw16(UDF_ICB_INTERN_ALLOC); 4739 4740 efe->perm = udf_rw32(0x7fff); /* all is allowed */ 4741 efe->link_cnt = udf_rw16(0); /* explicit setting */ 4742 4743 efe->ckpoint = udf_rw32(1); /* user supplied file version */ 4744 4745 vfs_timestamp(&now); 4746 udf_timespec_to_timestamp(&now, &efe->ctime); 4747 udf_timespec_to_timestamp(&now, &efe->atime); 4748 udf_timespec_to_timestamp(&now, &efe->attrtime); 4749 udf_timespec_to_timestamp(&now, &efe->mtime); 4750 4751 udf_set_regid(&efe->imp_id, IMPL_NAME); 4752 udf_add_impl_regid(ump, &efe->imp_id); 4753 4754 unique_id = udf_advance_uniqueid(ump); 4755 efe->unique_id = udf_rw64(unique_id); 4756 efe->l_ea = udf_rw32(0); 4757 4758 /* if its a directory, create '..' */ 4759 bpos = (uint8_t *) efe->data + udf_rw32(efe->l_ea); 4760 fidsize = 0; 4761 if (file_type == UDF_ICB_FILETYPE_DIRECTORY) { 4762 fidsize = udf_create_parentfid(ump, 4763 (struct fileid_desc *) bpos, parent_icb, 4764 parent_unique_id); 4765 } 4766 4767 /* record fidlength information */ 4768 efe->obj_size = udf_rw64(fidsize); 4769 efe->inf_len = udf_rw64(fidsize); 4770 efe->l_ad = udf_rw32(fidsize); 4771 efe->logblks_rec = udf_rw64(0); /* intern */ 4772 4773 crclen = sizeof(struct extfile_entry) - 1 - UDF_DESC_TAG_LENGTH; 4774 crclen += udf_rw32(efe->l_ea) + fidsize; 4775 efe->tag.desc_crc_len = udf_rw16(crclen); 4776 4777 (void) udf_validate_tag_and_crc_sums((union dscrptr *) efe); 4778 4779 return fidsize; 4780 } 4781 4782 /* --------------------------------------------------------------------- */ 4783 4784 int 4785 udf_dir_detach(struct udf_mount *ump, struct udf_node *dir_node, 4786 struct udf_node *udf_node, struct componentname *cnp) 4787 { 4788 struct vnode *dvp = dir_node->vnode; 4789 struct dirhash *dirh; 4790 struct dirhash_entry *dirh_ep; 4791 struct file_entry *fe = dir_node->fe; 4792 struct fileid_desc *fid; 4793 struct dirent *dirent, *s_dirent; 4794 struct charspec osta_charspec; 4795 uint64_t diroffset; 4796 uint32_t lb_size, fidsize; 4797 int found, error; 4798 int hit, refcnt; 4799 4800 /* get our dirhash and make sure its read in */ 4801 dirhash_get(&dir_node->dir_hash); 4802 error = udf_dirhash_fill(dir_node); 4803 if (error) { 4804 dirhash_put(dir_node->dir_hash); 4805 return error; 4806 } 4807 dirh = dir_node->dir_hash; 4808 4809 /* get directory filesize */ 4810 if (!fe) { 4811 assert(dir_node->efe); 4812 } 4813 4814 /* allocate temporary space for fid and dirents */ 4815 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4816 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4817 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4818 s_dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4819 4820 /* convert given unix name to canonical unix name */ 4821 udf_osta_charset(&osta_charspec); 4822 unix_to_udf_name((char *) fid->data, &fid->l_fi, 4823 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 4824 udf_to_unix_name(s_dirent->d_name, NAME_MAX, 4825 (char *) fid->data, fid->l_fi, 4826 &osta_charspec); 4827 s_dirent->d_namlen = strlen(s_dirent->d_name); 4828 4829 /* search our dirhash hits */ 4830 found = 0; 4831 dirh_ep = NULL; 4832 for (;;) { 4833 hit = dirhash_lookup(dirh, s_dirent->d_name, s_dirent->d_namlen, &dirh_ep); 4834 /* if no hit, abort the search */ 4835 if (!hit) 4836 break; 4837 4838 /* check this hit */ 4839 diroffset = dirh_ep->offset; 4840 4841 /* transfer a new fid/dirent */ 4842 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 4843 if (error) 4844 break; 4845 4846 /* see if its our entry */ 4847 KASSERT(dirent->d_namlen == s_dirent->d_namlen); 4848 if (strncmp(dirent->d_name, s_dirent->d_name, s_dirent->d_namlen) == 0) { 4849 found = 1; 4850 break; 4851 } 4852 } 4853 4854 if (!found) 4855 error = ENOENT; 4856 if (error) 4857 goto error_out; 4858 4859 /* mark deleted */ 4860 fid->file_char |= UDF_FILE_CHAR_DEL; 4861 #ifdef UDF_COMPLETE_DELETE 4862 memset(&fid->icb, 0, sizeof(fid->icb)); 4863 #endif 4864 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 4865 4866 /* get size of fid and compensate for the read_fid_stream advance */ 4867 fidsize = udf_fidsize(fid); 4868 diroffset -= fidsize; 4869 4870 /* write out */ 4871 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 4872 fid, fidsize, diroffset, 4873 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 4874 FSCRED, NULL, NULL); 4875 if (error) 4876 goto error_out; 4877 4878 /* get reference count of attached node */ 4879 if (udf_node->fe) { 4880 refcnt = udf_rw16(udf_node->fe->link_cnt); 4881 } else { 4882 KASSERT(udf_node->efe); 4883 refcnt = udf_rw16(udf_node->efe->link_cnt); 4884 } 4885 #ifdef UDF_COMPLETE_DELETE 4886 /* substract reference counter in attached node */ 4887 refcnt -= 1; 4888 if (udf_node->fe) { 4889 udf_node->fe->link_cnt = udf_rw16(refcnt); 4890 } else { 4891 udf_node->efe->link_cnt = udf_rw16(refcnt); 4892 } 4893 4894 /* prevent writeout when refcnt == 0 */ 4895 if (refcnt == 0) 4896 udf_node->i_flags |= IN_DELETED; 4897 4898 if (fid->file_char & UDF_FILE_CHAR_DIR) { 4899 int drefcnt; 4900 4901 /* substract reference counter in directory node */ 4902 /* note subtract 2 (?) for its was also backreferenced */ 4903 if (dir_node->fe) { 4904 drefcnt = udf_rw16(dir_node->fe->link_cnt); 4905 drefcnt -= 1; 4906 dir_node->fe->link_cnt = udf_rw16(drefcnt); 4907 } else { 4908 KASSERT(dir_node->efe); 4909 drefcnt = udf_rw16(dir_node->efe->link_cnt); 4910 drefcnt -= 1; 4911 dir_node->efe->link_cnt = udf_rw16(drefcnt); 4912 } 4913 } 4914 4915 udf_node->i_flags |= IN_MODIFIED; 4916 dir_node->i_flags |= IN_MODIFIED; 4917 #endif 4918 /* if it is/was a hardlink adjust the file count */ 4919 if (refcnt > 0) 4920 udf_adjust_filecount(udf_node, -1); 4921 4922 /* remove from the dirhash */ 4923 dirhash_remove(dirh, dirent, diroffset, 4924 udf_fidsize(fid)); 4925 4926 error_out: 4927 free(fid, M_UDFTEMP); 4928 free(dirent, M_UDFTEMP); 4929 free(s_dirent, M_UDFTEMP); 4930 4931 dirhash_put(dir_node->dir_hash); 4932 4933 return error; 4934 } 4935 4936 /* --------------------------------------------------------------------- */ 4937 4938 int 4939 udf_dir_update_rootentry(struct udf_mount *ump, struct udf_node *dir_node, 4940 struct udf_node *new_parent_node) 4941 { 4942 struct vnode *dvp = dir_node->vnode; 4943 struct dirhash *dirh; 4944 struct dirhash_entry *dirh_ep; 4945 struct file_entry *fe; 4946 struct extfile_entry *efe; 4947 struct fileid_desc *fid; 4948 struct dirent *dirent; 4949 uint64_t diroffset; 4950 uint64_t new_parent_unique_id; 4951 uint32_t lb_size, fidsize; 4952 int found, error; 4953 char const *name = ".."; 4954 int namelen = 2; 4955 int hit; 4956 4957 /* get our dirhash and make sure its read in */ 4958 dirhash_get(&dir_node->dir_hash); 4959 error = udf_dirhash_fill(dir_node); 4960 if (error) { 4961 dirhash_put(dir_node->dir_hash); 4962 return error; 4963 } 4964 dirh = dir_node->dir_hash; 4965 4966 /* get new parent's unique ID */ 4967 fe = new_parent_node->fe; 4968 efe = new_parent_node->efe; 4969 if (fe) { 4970 new_parent_unique_id = udf_rw64(fe->unique_id); 4971 } else { 4972 assert(efe); 4973 new_parent_unique_id = udf_rw64(efe->unique_id); 4974 } 4975 4976 /* get directory filesize */ 4977 fe = dir_node->fe; 4978 efe = dir_node->efe; 4979 if (!fe) { 4980 assert(efe); 4981 } 4982 4983 /* allocate temporary space for fid */ 4984 lb_size = udf_rw32(dir_node->ump->logical_vol->lb_size); 4985 fid = malloc(lb_size, M_UDFTEMP, M_WAITOK); 4986 dirent = malloc(sizeof(struct dirent), M_UDFTEMP, M_WAITOK); 4987 4988 /* 4989 * NOTE the standard does not dictate the FID entry '..' should be 4990 * first, though in practice it will most likely be. 4991 */ 4992 4993 /* search our dirhash hits */ 4994 found = 0; 4995 dirh_ep = NULL; 4996 for (;;) { 4997 hit = dirhash_lookup(dirh, name, namelen, &dirh_ep); 4998 /* if no hit, abort the search */ 4999 if (!hit) 5000 break; 5001 5002 /* check this hit */ 5003 diroffset = dirh_ep->offset; 5004 5005 /* transfer a new fid/dirent */ 5006 error = udf_read_fid_stream(dvp, &diroffset, fid, dirent); 5007 if (error) 5008 break; 5009 5010 /* see if its our entry */ 5011 KASSERT(dirent->d_namlen == namelen); 5012 if (strncmp(dirent->d_name, name, namelen) == 0) { 5013 found = 1; 5014 break; 5015 } 5016 } 5017 5018 if (!found) 5019 error = ENOENT; 5020 if (error) 5021 goto error_out; 5022 5023 /* update our ICB to the new parent, hit of lower 32 bits of uniqueid */ 5024 fid->icb = new_parent_node->write_loc; 5025 fid->icb.longad_uniqueid = udf_rw32(new_parent_unique_id); 5026 5027 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 5028 5029 /* get size of fid and compensate for the read_fid_stream advance */ 5030 fidsize = udf_fidsize(fid); 5031 diroffset -= fidsize; 5032 5033 /* write out */ 5034 error = vn_rdwr(UIO_WRITE, dir_node->vnode, 5035 fid, fidsize, diroffset, 5036 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 5037 FSCRED, NULL, NULL); 5038 5039 /* nothing to be done in the dirhash */ 5040 5041 error_out: 5042 free(fid, M_UDFTEMP); 5043 free(dirent, M_UDFTEMP); 5044 5045 dirhash_put(dir_node->dir_hash); 5046 5047 return error; 5048 } 5049 5050 /* --------------------------------------------------------------------- */ 5051 5052 /* 5053 * We are not allowed to split the fid tag itself over an logical block so 5054 * check the space remaining in the logical block. 5055 * 5056 * We try to select the smallest candidate for recycling or when none is 5057 * found, append a new one at the end of the directory. 5058 */ 5059 5060 int 5061 udf_dir_attach(struct udf_mount *ump, struct udf_node *dir_node, 5062 struct udf_node *udf_node, struct vattr *vap, struct componentname *cnp) 5063 { 5064 struct vnode *dvp = dir_node->vnode; 5065 struct dirhash *dirh; 5066 struct dirhash_entry *dirh_ep; 5067 struct fileid_desc *fid; 5068 struct icb_tag *icbtag; 5069 struct charspec osta_charspec; 5070 struct dirent dirent; 5071 uint64_t unique_id, dir_size; 5072 uint64_t fid_pos, end_fid_pos, chosen_fid_pos; 5073 uint32_t chosen_size, chosen_size_diff; 5074 int lb_size, lb_rest, fidsize, this_fidsize, size_diff; 5075 int file_char, refcnt, icbflags, addr_type, hit, error; 5076 5077 /* get our dirhash and make sure its read in */ 5078 dirhash_get(&dir_node->dir_hash); 5079 error = udf_dirhash_fill(dir_node); 5080 if (error) { 5081 dirhash_put(dir_node->dir_hash); 5082 return error; 5083 } 5084 dirh = dir_node->dir_hash; 5085 5086 /* get info */ 5087 lb_size = udf_rw32(ump->logical_vol->lb_size); 5088 udf_osta_charset(&osta_charspec); 5089 5090 if (dir_node->fe) { 5091 dir_size = udf_rw64(dir_node->fe->inf_len); 5092 icbtag = &dir_node->fe->icbtag; 5093 } else { 5094 dir_size = udf_rw64(dir_node->efe->inf_len); 5095 icbtag = &dir_node->efe->icbtag; 5096 } 5097 5098 icbflags = udf_rw16(icbtag->flags); 5099 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5100 5101 if (udf_node->fe) { 5102 unique_id = udf_rw64(udf_node->fe->unique_id); 5103 refcnt = udf_rw16(udf_node->fe->link_cnt); 5104 } else { 5105 unique_id = udf_rw64(udf_node->efe->unique_id); 5106 refcnt = udf_rw16(udf_node->efe->link_cnt); 5107 } 5108 5109 if (refcnt > 0) { 5110 unique_id = udf_advance_uniqueid(ump); 5111 udf_adjust_filecount(udf_node, 1); 5112 } 5113 5114 /* determine file characteristics */ 5115 file_char = 0; /* visible non deleted file and not stream metadata */ 5116 if (vap->va_type == VDIR) 5117 file_char = UDF_FILE_CHAR_DIR; 5118 5119 /* malloc scrap buffer */ 5120 fid = malloc(lb_size, M_TEMP, M_WAITOK|M_ZERO); 5121 5122 /* calculate _minimum_ fid size */ 5123 unix_to_udf_name((char *) fid->data, &fid->l_fi, 5124 cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 5125 fidsize = UDF_FID_SIZE + fid->l_fi; 5126 fidsize = (fidsize + 3) & ~3; /* multiple of 4 */ 5127 5128 /* find position that will fit the FID */ 5129 chosen_fid_pos = dir_size; 5130 chosen_size = 0; 5131 chosen_size_diff = UINT_MAX; 5132 5133 /* shut up gcc */ 5134 dirent.d_namlen = 0; 5135 5136 /* search our dirhash hits */ 5137 error = 0; 5138 dirh_ep = NULL; 5139 for (;;) { 5140 hit = dirhash_lookup_freed(dirh, fidsize, &dirh_ep); 5141 /* if no hit, abort the search */ 5142 if (!hit) 5143 break; 5144 5145 /* check this hit for size */ 5146 this_fidsize = dirh_ep->entry_size; 5147 5148 /* check this hit */ 5149 fid_pos = dirh_ep->offset; 5150 end_fid_pos = fid_pos + this_fidsize; 5151 size_diff = this_fidsize - fidsize; 5152 lb_rest = lb_size - (end_fid_pos % lb_size); 5153 5154 #ifndef UDF_COMPLETE_DELETE 5155 /* transfer a new fid/dirent */ 5156 error = udf_read_fid_stream(vp, &fid_pos, fid, dirent); 5157 if (error) 5158 goto error_out; 5159 5160 /* only reuse entries that are wiped */ 5161 /* check if the len + loc are marked zero */ 5162 if (udf_rw32(fid->icb.len) != 0) 5163 continue; 5164 if (udf_rw32(fid->icb.loc.lb_num) != 0) 5165 continue; 5166 if (udf_rw16(fid->icb.loc.part_num) != 0) 5167 continue; 5168 #endif /* UDF_COMPLETE_DELETE */ 5169 5170 /* select if not splitting the tag and its smaller */ 5171 if ((size_diff >= 0) && 5172 (size_diff < chosen_size_diff) && 5173 (lb_rest >= sizeof(struct desc_tag))) 5174 { 5175 /* UDF 2.3.4.2+3 specifies rules for iu size */ 5176 if ((size_diff == 0) || (size_diff >= 32)) { 5177 chosen_fid_pos = fid_pos; 5178 chosen_size = this_fidsize; 5179 chosen_size_diff = size_diff; 5180 } 5181 } 5182 } 5183 5184 5185 /* extend directory if no other candidate found */ 5186 if (chosen_size == 0) { 5187 chosen_fid_pos = dir_size; 5188 chosen_size = fidsize; 5189 chosen_size_diff = 0; 5190 5191 /* special case UDF 2.00+ 2.3.4.4, no splitting up fid tag */ 5192 if (addr_type == UDF_ICB_INTERN_ALLOC) { 5193 /* pre-grow directory to see if we're to switch */ 5194 udf_grow_node(dir_node, dir_size + chosen_size); 5195 5196 icbflags = udf_rw16(icbtag->flags); 5197 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 5198 } 5199 5200 /* make sure the next fid desc_tag won't be splitted */ 5201 if (addr_type != UDF_ICB_INTERN_ALLOC) { 5202 end_fid_pos = chosen_fid_pos + chosen_size; 5203 lb_rest = lb_size - (end_fid_pos % lb_size); 5204 5205 /* pad with implementation use regid if needed */ 5206 if (lb_rest < sizeof(struct desc_tag)) 5207 chosen_size += 32; 5208 } 5209 } 5210 chosen_size_diff = chosen_size - fidsize; 5211 5212 /* populate the FID */ 5213 memset(fid, 0, lb_size); 5214 udf_inittag(ump, &fid->tag, TAGID_FID, 0); 5215 fid->file_version_num = udf_rw16(1); /* UDF 2.3.4.1 */ 5216 fid->file_char = file_char; 5217 fid->icb = udf_node->loc; 5218 fid->icb.longad_uniqueid = udf_rw32((uint32_t) unique_id); 5219 fid->l_iu = udf_rw16(0); 5220 5221 if (chosen_size > fidsize) { 5222 /* insert implementation-use regid to space it correctly */ 5223 fid->l_iu = udf_rw16(chosen_size_diff); 5224 5225 /* set implementation use */ 5226 udf_set_regid((struct regid *) fid->data, IMPL_NAME); 5227 udf_add_impl_regid(ump, (struct regid *) fid->data); 5228 } 5229 5230 /* fill in name */ 5231 unix_to_udf_name((char *) fid->data + udf_rw16(fid->l_iu), 5232 &fid->l_fi, cnp->cn_nameptr, cnp->cn_namelen, &osta_charspec); 5233 5234 fid->tag.desc_crc_len = udf_rw16(chosen_size - UDF_DESC_TAG_LENGTH); 5235 (void) udf_validate_tag_and_crc_sums((union dscrptr *) fid); 5236 5237 /* writeout FID/update parent directory */ 5238 error = vn_rdwr(UIO_WRITE, dvp, 5239 fid, chosen_size, chosen_fid_pos, 5240 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 5241 FSCRED, NULL, NULL); 5242 5243 if (error) 5244 goto error_out; 5245 5246 /* add reference counter in attached node */ 5247 if (udf_node->fe) { 5248 refcnt = udf_rw16(udf_node->fe->link_cnt); 5249 udf_node->fe->link_cnt = udf_rw16(refcnt+1); 5250 } else { 5251 KASSERT(udf_node->efe); 5252 refcnt = udf_rw16(udf_node->efe->link_cnt); 5253 udf_node->efe->link_cnt = udf_rw16(refcnt+1); 5254 } 5255 5256 /* mark not deleted if it was... just in case, but do warn */ 5257 if (udf_node->i_flags & IN_DELETED) { 5258 printf("udf: warning, marking a file undeleted\n"); 5259 udf_node->i_flags &= ~IN_DELETED; 5260 } 5261 5262 if (file_char & UDF_FILE_CHAR_DIR) { 5263 /* add reference counter in directory node for '..' */ 5264 if (dir_node->fe) { 5265 refcnt = udf_rw16(dir_node->fe->link_cnt); 5266 refcnt++; 5267 dir_node->fe->link_cnt = udf_rw16(refcnt); 5268 } else { 5269 KASSERT(dir_node->efe); 5270 refcnt = udf_rw16(dir_node->efe->link_cnt); 5271 refcnt++; 5272 dir_node->efe->link_cnt = udf_rw16(refcnt); 5273 } 5274 } 5275 5276 /* append to the dirhash */ 5277 /* NOTE do not use dirent anymore or it won't match later! */ 5278 udf_to_unix_name(dirent.d_name, NAME_MAX, 5279 (char *) fid->data + udf_rw16(fid->l_iu), fid->l_fi, &osta_charspec); 5280 dirent.d_namlen = strlen(dirent.d_name); 5281 dirhash_enter(dirh, &dirent, chosen_fid_pos, 5282 udf_fidsize(fid), 1); 5283 5284 /* note updates */ 5285 udf_node->i_flags |= IN_CHANGE | IN_MODIFY; /* | IN_CREATE? */ 5286 /* VN_KNOTE(udf_node, ...) */ 5287 udf_update(udf_node->vnode, NULL, NULL, NULL, 0); 5288 5289 error_out: 5290 free(fid, M_TEMP); 5291 5292 dirhash_put(dir_node->dir_hash); 5293 5294 return error; 5295 } 5296 5297 /* --------------------------------------------------------------------- */ 5298 5299 /* 5300 * Each node can have an attached streamdir node though not recursively. These 5301 * are otherwise known as named substreams/named extended attributes that have 5302 * no size limitations. 5303 * 5304 * `Normal' extended attributes are indicated with a number and are recorded 5305 * in either the fe/efe descriptor itself for small descriptors or recorded in 5306 * the attached extended attribute file. Since these spaces can get 5307 * fragmented, care ought to be taken. 5308 * 5309 * Since the size of the space reserved for allocation descriptors is limited, 5310 * there is a mechanim provided for extending this space; this is done by a 5311 * special extent to allow schrinking of the allocations without breaking the 5312 * linkage to the allocation extent descriptor. 5313 */ 5314 5315 int 5316 udf_loadvnode(struct mount *mp, struct vnode *vp, 5317 const void *key, size_t key_len, const void **new_key) 5318 { 5319 union dscrptr *dscr; 5320 struct udf_mount *ump; 5321 struct udf_node *udf_node; 5322 struct long_ad node_icb_loc, icb_loc, next_icb_loc, last_fe_icb_loc; 5323 uint64_t file_size; 5324 uint32_t lb_size, sector, dummy; 5325 int udf_file_type, dscr_type, strat, strat4096, needs_indirect; 5326 int slot, eof, error; 5327 int num_indir_followed = 0; 5328 5329 DPRINTF(NODE, ("udf_loadvnode called\n")); 5330 udf_node = NULL; 5331 ump = VFSTOUDF(mp); 5332 5333 KASSERT(key_len == sizeof(node_icb_loc.loc)); 5334 memset(&node_icb_loc, 0, sizeof(node_icb_loc)); 5335 node_icb_loc.len = ump->logical_vol->lb_size; 5336 memcpy(&node_icb_loc.loc, key, key_len); 5337 5338 /* garbage check: translate udf_node_icb_loc to sectornr */ 5339 error = udf_translate_vtop(ump, &node_icb_loc, §or, &dummy); 5340 if (error) { 5341 DPRINTF(NODE, ("\tcan't translate icb address!\n")); 5342 /* no use, this will fail anyway */ 5343 return EINVAL; 5344 } 5345 5346 /* build udf_node (do initialise!) */ 5347 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5348 memset(udf_node, 0, sizeof(struct udf_node)); 5349 5350 vp->v_tag = VT_UDF; 5351 vp->v_op = udf_vnodeop_p; 5352 vp->v_data = udf_node; 5353 5354 /* initialise crosslinks, note location of fe/efe for hashing */ 5355 udf_node->ump = ump; 5356 udf_node->vnode = vp; 5357 udf_node->loc = node_icb_loc; 5358 udf_node->lockf = 0; 5359 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5360 cv_init(&udf_node->node_lock, "udf_nlk"); 5361 genfs_node_init(vp, &udf_genfsops); /* inititise genfs */ 5362 udf_node->outstanding_bufs = 0; 5363 udf_node->outstanding_nodedscr = 0; 5364 udf_node->uncommitted_lbs = 0; 5365 5366 /* check if we're fetching the root */ 5367 if (ump->fileset_desc) 5368 if (memcmp(&udf_node->loc, &ump->fileset_desc->rootdir_icb, 5369 sizeof(struct long_ad)) == 0) 5370 vp->v_vflag |= VV_ROOT; 5371 5372 icb_loc = node_icb_loc; 5373 needs_indirect = 0; 5374 strat4096 = 0; 5375 udf_file_type = UDF_ICB_FILETYPE_UNKNOWN; 5376 file_size = 0; 5377 lb_size = udf_rw32(ump->logical_vol->lb_size); 5378 5379 DPRINTF(NODE, ("\tstart reading descriptors\n")); 5380 do { 5381 /* try to read in fe/efe */ 5382 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5383 5384 /* blank sector marks end of sequence, check this */ 5385 if ((dscr == NULL) && (!strat4096)) 5386 error = ENOENT; 5387 5388 /* break if read error or blank sector */ 5389 if (error || (dscr == NULL)) 5390 break; 5391 5392 /* process descriptor based on the descriptor type */ 5393 dscr_type = udf_rw16(dscr->tag.id); 5394 DPRINTF(NODE, ("\tread descriptor %d\n", dscr_type)); 5395 5396 /* if dealing with an indirect entry, follow the link */ 5397 if (dscr_type == TAGID_INDIRECTENTRY) { 5398 needs_indirect = 0; 5399 next_icb_loc = dscr->inde.indirect_icb; 5400 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5401 icb_loc = next_icb_loc; 5402 if (++num_indir_followed > UDF_MAX_INDIRS_FOLLOW) { 5403 error = EMLINK; 5404 break; 5405 } 5406 continue; 5407 } 5408 5409 /* only file entries and extended file entries allowed here */ 5410 if ((dscr_type != TAGID_FENTRY) && 5411 (dscr_type != TAGID_EXTFENTRY)) { 5412 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5413 error = ENOENT; 5414 break; 5415 } 5416 5417 KASSERT(udf_tagsize(dscr, lb_size) == lb_size); 5418 5419 /* choose this one */ 5420 last_fe_icb_loc = icb_loc; 5421 5422 /* record and process/update (ext)fentry */ 5423 if (dscr_type == TAGID_FENTRY) { 5424 if (udf_node->fe) 5425 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5426 udf_node->fe); 5427 udf_node->fe = &dscr->fe; 5428 strat = udf_rw16(udf_node->fe->icbtag.strat_type); 5429 udf_file_type = udf_node->fe->icbtag.file_type; 5430 file_size = udf_rw64(udf_node->fe->inf_len); 5431 } else { 5432 if (udf_node->efe) 5433 udf_free_logvol_dscr(ump, &last_fe_icb_loc, 5434 udf_node->efe); 5435 udf_node->efe = &dscr->efe; 5436 strat = udf_rw16(udf_node->efe->icbtag.strat_type); 5437 udf_file_type = udf_node->efe->icbtag.file_type; 5438 file_size = udf_rw64(udf_node->efe->inf_len); 5439 } 5440 5441 /* check recording strategy (structure) */ 5442 5443 /* 5444 * Strategy 4096 is a daisy linked chain terminating with an 5445 * unrecorded sector or a TERM descriptor. The next 5446 * descriptor is to be found in the sector that follows the 5447 * current sector. 5448 */ 5449 if (strat == 4096) { 5450 strat4096 = 1; 5451 needs_indirect = 1; 5452 5453 icb_loc.loc.lb_num = udf_rw32(icb_loc.loc.lb_num) + 1; 5454 } 5455 5456 /* 5457 * Strategy 4 is the normal strategy and terminates, but if 5458 * we're in strategy 4096, we can't have strategy 4 mixed in 5459 */ 5460 5461 if (strat == 4) { 5462 if (strat4096) { 5463 error = EINVAL; 5464 break; 5465 } 5466 break; /* done */ 5467 } 5468 } while (!error); 5469 5470 /* first round of cleanup code */ 5471 if (error) { 5472 DPRINTF(NODE, ("\tnode fe/efe failed!\n")); 5473 /* recycle udf_node */ 5474 udf_dispose_node(udf_node); 5475 5476 return EINVAL; /* error code ok? */ 5477 } 5478 DPRINTF(NODE, ("\tnode fe/efe read in fine\n")); 5479 5480 /* assert no references to dscr anymore beyong this point */ 5481 assert((udf_node->fe) || (udf_node->efe)); 5482 dscr = NULL; 5483 5484 /* 5485 * Remember where to record an updated version of the descriptor. If 5486 * there is a sequence of indirect entries, icb_loc will have been 5487 * updated. Its the write disipline to allocate new space and to make 5488 * sure the chain is maintained. 5489 * 5490 * `needs_indirect' flags if the next location is to be filled with 5491 * with an indirect entry. 5492 */ 5493 udf_node->write_loc = icb_loc; 5494 udf_node->needs_indirect = needs_indirect; 5495 5496 /* 5497 * Go trough all allocations extents of this descriptor and when 5498 * encountering a redirect read in the allocation extension. These are 5499 * daisy-chained. 5500 */ 5501 UDF_LOCK_NODE(udf_node, 0); 5502 udf_node->num_extensions = 0; 5503 5504 error = 0; 5505 slot = 0; 5506 for (;;) { 5507 udf_get_adslot(udf_node, slot, &icb_loc, &eof); 5508 DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 5509 "lb_num = %d, part = %d\n", slot, eof, 5510 UDF_EXT_FLAGS(udf_rw32(icb_loc.len)), 5511 UDF_EXT_LEN(udf_rw32(icb_loc.len)), 5512 udf_rw32(icb_loc.loc.lb_num), 5513 udf_rw16(icb_loc.loc.part_num))); 5514 if (eof) 5515 break; 5516 slot++; 5517 5518 if (UDF_EXT_FLAGS(udf_rw32(icb_loc.len)) != UDF_EXT_REDIRECT) 5519 continue; 5520 5521 DPRINTF(NODE, ("\tgot redirect extent\n")); 5522 if (udf_node->num_extensions >= UDF_MAX_ALLOC_EXTENTS) { 5523 DPRINTF(ALLOC, ("udf_get_node: implementation limit, " 5524 "too many allocation extensions on " 5525 "udf_node\n")); 5526 error = EINVAL; 5527 break; 5528 } 5529 5530 /* length can only be *one* lb : UDF 2.50/2.3.7.1 */ 5531 if (UDF_EXT_LEN(udf_rw32(icb_loc.len)) != lb_size) { 5532 DPRINTF(ALLOC, ("udf_get_node: bad allocation " 5533 "extension size in udf_node\n")); 5534 error = EINVAL; 5535 break; 5536 } 5537 5538 DPRINTF(NODE, ("read allocation extent at lb_num %d\n", 5539 UDF_EXT_LEN(udf_rw32(icb_loc.loc.lb_num)))); 5540 /* load in allocation extent */ 5541 error = udf_read_logvol_dscr(ump, &icb_loc, &dscr); 5542 if (error || (dscr == NULL)) 5543 break; 5544 5545 /* process read-in descriptor */ 5546 dscr_type = udf_rw16(dscr->tag.id); 5547 5548 if (dscr_type != TAGID_ALLOCEXTENT) { 5549 udf_free_logvol_dscr(ump, &icb_loc, dscr); 5550 error = ENOENT; 5551 break; 5552 } 5553 5554 DPRINTF(NODE, ("\trecording redirect extent\n")); 5555 udf_node->ext[udf_node->num_extensions] = &dscr->aee; 5556 udf_node->ext_loc[udf_node->num_extensions] = icb_loc; 5557 5558 udf_node->num_extensions++; 5559 5560 } /* while */ 5561 UDF_UNLOCK_NODE(udf_node, 0); 5562 5563 /* second round of cleanup code */ 5564 if (error) { 5565 /* recycle udf_node */ 5566 udf_dispose_node(udf_node); 5567 5568 return EINVAL; /* error code ok? */ 5569 } 5570 5571 DPRINTF(NODE, ("\tnode read in fine\n")); 5572 5573 /* 5574 * Translate UDF filetypes into vnode types. 5575 * 5576 * Systemfiles like the meta main and mirror files are not treated as 5577 * normal files, so we type them as having no type. UDF dictates that 5578 * they are not allowed to be visible. 5579 */ 5580 5581 switch (udf_file_type) { 5582 case UDF_ICB_FILETYPE_DIRECTORY : 5583 case UDF_ICB_FILETYPE_STREAMDIR : 5584 vp->v_type = VDIR; 5585 break; 5586 case UDF_ICB_FILETYPE_BLOCKDEVICE : 5587 vp->v_type = VBLK; 5588 break; 5589 case UDF_ICB_FILETYPE_CHARDEVICE : 5590 vp->v_type = VCHR; 5591 break; 5592 case UDF_ICB_FILETYPE_SOCKET : 5593 vp->v_type = VSOCK; 5594 break; 5595 case UDF_ICB_FILETYPE_FIFO : 5596 vp->v_type = VFIFO; 5597 break; 5598 case UDF_ICB_FILETYPE_SYMLINK : 5599 vp->v_type = VLNK; 5600 break; 5601 case UDF_ICB_FILETYPE_VAT : 5602 case UDF_ICB_FILETYPE_META_MAIN : 5603 case UDF_ICB_FILETYPE_META_MIRROR : 5604 vp->v_type = VNON; 5605 break; 5606 case UDF_ICB_FILETYPE_RANDOMACCESS : 5607 case UDF_ICB_FILETYPE_REALTIME : 5608 vp->v_type = VREG; 5609 break; 5610 default: 5611 /* YIKES, something else */ 5612 vp->v_type = VNON; 5613 } 5614 5615 /* TODO specfs, fifofs etc etc. vnops setting */ 5616 5617 /* don't forget to set vnode's v_size */ 5618 uvm_vnp_setsize(vp, file_size); 5619 5620 /* TODO ext attr and streamdir udf_nodes */ 5621 5622 *new_key = &udf_node->loc.loc; 5623 5624 return 0; 5625 } 5626 5627 int 5628 udf_get_node(struct udf_mount *ump, struct long_ad *node_icb_loc, 5629 struct udf_node **udf_noderes) 5630 { 5631 int error; 5632 struct vnode *vp; 5633 5634 *udf_noderes = NULL; 5635 5636 error = vcache_get(ump->vfs_mountp, &node_icb_loc->loc, 5637 sizeof(node_icb_loc->loc), &vp); 5638 if (error) 5639 return error; 5640 error = vn_lock(vp, LK_EXCLUSIVE); 5641 if (error) { 5642 vrele(vp); 5643 return error; 5644 } 5645 *udf_noderes = VTOI(vp); 5646 return 0; 5647 } 5648 5649 /* --------------------------------------------------------------------- */ 5650 5651 int 5652 udf_writeout_node(struct udf_node *udf_node, int waitfor) 5653 { 5654 union dscrptr *dscr; 5655 struct long_ad *loc; 5656 int extnr, error; 5657 5658 DPRINTF(NODE, ("udf_writeout_node called\n")); 5659 5660 KASSERT(udf_node->outstanding_bufs == 0); 5661 KASSERT(udf_node->outstanding_nodedscr == 0); 5662 5663 KASSERT(LIST_EMPTY(&udf_node->vnode->v_dirtyblkhd)); 5664 5665 if (udf_node->i_flags & IN_DELETED) { 5666 DPRINTF(NODE, ("\tnode deleted; not writing out\n")); 5667 udf_cleanup_reservation(udf_node); 5668 return 0; 5669 } 5670 5671 /* lock node; unlocked in callback */ 5672 UDF_LOCK_NODE(udf_node, 0); 5673 5674 /* remove pending reservations, we're written out */ 5675 udf_cleanup_reservation(udf_node); 5676 5677 /* at least one descriptor writeout */ 5678 udf_node->outstanding_nodedscr = 1; 5679 5680 /* we're going to write out the descriptor so clear the flags */ 5681 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED); 5682 5683 /* if we were rebuild, write out the allocation extents */ 5684 if (udf_node->i_flags & IN_NODE_REBUILD) { 5685 /* mark outstanding node descriptors and issue them */ 5686 udf_node->outstanding_nodedscr += udf_node->num_extensions; 5687 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5688 loc = &udf_node->ext_loc[extnr]; 5689 dscr = (union dscrptr *) udf_node->ext[extnr]; 5690 error = udf_write_logvol_dscr(udf_node, dscr, loc, 0); 5691 if (error) 5692 return error; 5693 } 5694 /* mark allocation extents written out */ 5695 udf_node->i_flags &= ~(IN_NODE_REBUILD); 5696 } 5697 5698 if (udf_node->fe) { 5699 KASSERT(udf_node->efe == NULL); 5700 dscr = (union dscrptr *) udf_node->fe; 5701 } else { 5702 KASSERT(udf_node->efe); 5703 KASSERT(udf_node->fe == NULL); 5704 dscr = (union dscrptr *) udf_node->efe; 5705 } 5706 KASSERT(dscr); 5707 5708 loc = &udf_node->write_loc; 5709 error = udf_write_logvol_dscr(udf_node, dscr, loc, waitfor); 5710 5711 return error; 5712 } 5713 5714 /* --------------------------------------------------------------------- */ 5715 5716 int 5717 udf_dispose_node(struct udf_node *udf_node) 5718 { 5719 struct vnode *vp; 5720 int extnr; 5721 5722 DPRINTF(NODE, ("udf_dispose_node called on node %p\n", udf_node)); 5723 if (!udf_node) { 5724 DPRINTF(NODE, ("UDF: Dispose node on node NULL, ignoring\n")); 5725 return 0; 5726 } 5727 5728 vp = udf_node->vnode; 5729 #ifdef DIAGNOSTIC 5730 if (vp->v_numoutput) 5731 panic("disposing UDF node with pending I/O's, udf_node = %p, " 5732 "v_numoutput = %d", udf_node, vp->v_numoutput); 5733 #endif 5734 5735 udf_cleanup_reservation(udf_node); 5736 5737 /* TODO extended attributes and streamdir */ 5738 5739 /* remove dirhash if present */ 5740 dirhash_purge(&udf_node->dir_hash); 5741 5742 /* destroy our lock */ 5743 mutex_destroy(&udf_node->node_mutex); 5744 cv_destroy(&udf_node->node_lock); 5745 5746 /* dissociate our udf_node from the vnode */ 5747 genfs_node_destroy(udf_node->vnode); 5748 mutex_enter(vp->v_interlock); 5749 vp->v_data = NULL; 5750 mutex_exit(vp->v_interlock); 5751 5752 /* free associated memory and the node itself */ 5753 for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 5754 udf_free_logvol_dscr(udf_node->ump, &udf_node->ext_loc[extnr], 5755 udf_node->ext[extnr]); 5756 udf_node->ext[extnr] = (void *) 0xdeadcccc; 5757 } 5758 5759 if (udf_node->fe) 5760 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5761 udf_node->fe); 5762 if (udf_node->efe) 5763 udf_free_logvol_dscr(udf_node->ump, &udf_node->loc, 5764 udf_node->efe); 5765 5766 udf_node->fe = (void *) 0xdeadaaaa; 5767 udf_node->efe = (void *) 0xdeadbbbb; 5768 udf_node->ump = (void *) 0xdeadbeef; 5769 pool_put(&udf_node_pool, udf_node); 5770 5771 return 0; 5772 } 5773 5774 5775 5776 /* 5777 * create a new node using the specified dvp, vap and cnp. 5778 * This allows special files to be created. Use with care. 5779 */ 5780 5781 int 5782 udf_newvnode(struct mount *mp, struct vnode *dvp, struct vnode *vp, 5783 struct vattr *vap, kauth_cred_t cred, 5784 size_t *key_len, const void **new_key) 5785 { 5786 union dscrptr *dscr; 5787 struct udf_node *dir_node = VTOI(dvp); 5788 struct udf_node *udf_node; 5789 struct udf_mount *ump = dir_node->ump; 5790 struct long_ad node_icb_loc; 5791 uint64_t parent_unique_id; 5792 uint64_t lmapping; 5793 uint32_t lb_size, lb_num; 5794 uint16_t vpart_num; 5795 uid_t uid; 5796 gid_t gid, parent_gid; 5797 int (**vnodeops)(void *); 5798 int udf_file_type, fid_size, error; 5799 5800 vnodeops = udf_vnodeop_p; 5801 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5802 5803 switch (vap->va_type) { 5804 case VREG : 5805 udf_file_type = UDF_ICB_FILETYPE_RANDOMACCESS; 5806 break; 5807 case VDIR : 5808 udf_file_type = UDF_ICB_FILETYPE_DIRECTORY; 5809 break; 5810 case VLNK : 5811 udf_file_type = UDF_ICB_FILETYPE_SYMLINK; 5812 break; 5813 case VBLK : 5814 udf_file_type = UDF_ICB_FILETYPE_BLOCKDEVICE; 5815 /* specfs */ 5816 return ENOTSUP; 5817 break; 5818 case VCHR : 5819 udf_file_type = UDF_ICB_FILETYPE_CHARDEVICE; 5820 /* specfs */ 5821 return ENOTSUP; 5822 break; 5823 case VFIFO : 5824 udf_file_type = UDF_ICB_FILETYPE_FIFO; 5825 /* fifofs */ 5826 return ENOTSUP; 5827 break; 5828 case VSOCK : 5829 udf_file_type = UDF_ICB_FILETYPE_SOCKET; 5830 return ENOTSUP; 5831 break; 5832 case VNON : 5833 case VBAD : 5834 default : 5835 /* nothing; can we even create these? */ 5836 return EINVAL; 5837 } 5838 5839 lb_size = udf_rw32(ump->logical_vol->lb_size); 5840 5841 /* reserve space for one logical block */ 5842 vpart_num = ump->node_part; 5843 error = udf_reserve_space(ump, NULL, UDF_C_NODE, 5844 vpart_num, 1, /* can_fail */ true); 5845 if (error) 5846 return error; 5847 5848 /* allocate node */ 5849 error = udf_allocate_space(ump, NULL, UDF_C_NODE, 5850 vpart_num, 1, &lmapping); 5851 if (error) { 5852 udf_do_unreserve_space(ump, NULL, vpart_num, 1); 5853 return error; 5854 } 5855 5856 lb_num = lmapping; 5857 5858 /* initialise pointer to location */ 5859 memset(&node_icb_loc, 0, sizeof(struct long_ad)); 5860 node_icb_loc.len = udf_rw32(lb_size); 5861 node_icb_loc.loc.lb_num = udf_rw32(lb_num); 5862 node_icb_loc.loc.part_num = udf_rw16(vpart_num); 5863 5864 /* build udf_node (do initialise!) */ 5865 udf_node = pool_get(&udf_node_pool, PR_WAITOK); 5866 memset(udf_node, 0, sizeof(struct udf_node)); 5867 5868 /* initialise crosslinks, note location of fe/efe for hashing */ 5869 /* bugalert: synchronise with udf_get_node() */ 5870 udf_node->ump = ump; 5871 udf_node->vnode = vp; 5872 vp->v_data = udf_node; 5873 udf_node->loc = node_icb_loc; 5874 udf_node->write_loc = node_icb_loc; 5875 udf_node->lockf = 0; 5876 mutex_init(&udf_node->node_mutex, MUTEX_DEFAULT, IPL_NONE); 5877 cv_init(&udf_node->node_lock, "udf_nlk"); 5878 udf_node->outstanding_bufs = 0; 5879 udf_node->outstanding_nodedscr = 0; 5880 udf_node->uncommitted_lbs = 0; 5881 5882 vp->v_tag = VT_UDF; 5883 vp->v_op = vnodeops; 5884 5885 /* initialise genfs */ 5886 genfs_node_init(vp, &udf_genfsops); 5887 5888 /* get parent's unique ID for refering '..' if its a directory */ 5889 if (dir_node->fe) { 5890 parent_unique_id = udf_rw64(dir_node->fe->unique_id); 5891 parent_gid = (gid_t) udf_rw32(dir_node->fe->gid); 5892 } else { 5893 parent_unique_id = udf_rw64(dir_node->efe->unique_id); 5894 parent_gid = (gid_t) udf_rw32(dir_node->efe->gid); 5895 } 5896 5897 /* get descriptor */ 5898 udf_create_logvol_dscr(ump, udf_node, &node_icb_loc, &dscr); 5899 5900 /* choose a fe or an efe for it */ 5901 if (udf_rw16(ump->logical_vol->tag.descriptor_ver) == 2) { 5902 udf_node->fe = &dscr->fe; 5903 fid_size = udf_create_new_fe(ump, udf_node->fe, 5904 udf_file_type, &udf_node->loc, 5905 &dir_node->loc, parent_unique_id); 5906 /* TODO add extended attribute for creation time */ 5907 } else { 5908 udf_node->efe = &dscr->efe; 5909 fid_size = udf_create_new_efe(ump, udf_node->efe, 5910 udf_file_type, &udf_node->loc, 5911 &dir_node->loc, parent_unique_id); 5912 } 5913 KASSERT(dscr->tag.tag_loc == udf_node->loc.loc.lb_num); 5914 5915 /* update vnode's size and type */ 5916 vp->v_type = vap->va_type; 5917 uvm_vnp_setsize(vp, fid_size); 5918 5919 /* set access mode */ 5920 udf_setaccessmode(udf_node, vap->va_mode); 5921 5922 /* set ownership */ 5923 uid = kauth_cred_geteuid(cred); 5924 gid = parent_gid; 5925 udf_setownership(udf_node, uid, gid); 5926 5927 *key_len = sizeof(udf_node->loc.loc); 5928 *new_key = &udf_node->loc.loc; 5929 5930 return 0; 5931 } 5932 5933 5934 int 5935 udf_create_node(struct vnode *dvp, struct vnode **vpp, struct vattr *vap, 5936 struct componentname *cnp) 5937 { 5938 struct udf_node *udf_node, *dir_node = VTOI(dvp); 5939 struct udf_mount *ump = dir_node->ump; 5940 int error; 5941 5942 error = vcache_new(dvp->v_mount, dvp, vap, cnp->cn_cred, vpp); 5943 if (error) 5944 return error; 5945 5946 udf_node = VTOI(*vpp); 5947 error = udf_dir_attach(ump, dir_node, udf_node, vap, cnp); 5948 if (error) { 5949 struct long_ad *node_icb_loc = &udf_node->loc; 5950 uint32_t lb_num = udf_rw32(node_icb_loc->loc.lb_num); 5951 uint16_t vpart_num = udf_rw16(node_icb_loc->loc.part_num); 5952 5953 /* free disc allocation for node */ 5954 udf_free_allocated_space(ump, lb_num, vpart_num, 1); 5955 5956 /* recycle udf_node */ 5957 udf_dispose_node(udf_node); 5958 vrele(*vpp); 5959 5960 *vpp = NULL; 5961 return error; 5962 } 5963 5964 /* adjust file count */ 5965 udf_adjust_filecount(udf_node, 1); 5966 5967 return 0; 5968 } 5969 5970 /* --------------------------------------------------------------------- */ 5971 5972 static void 5973 udf_free_descriptor_space(struct udf_node *udf_node, struct long_ad *loc, void *mem) 5974 { 5975 struct udf_mount *ump = udf_node->ump; 5976 uint32_t lb_size, lb_num, len, num_lb; 5977 uint16_t vpart_num; 5978 5979 /* is there really one? */ 5980 if (mem == NULL) 5981 return; 5982 5983 /* got a descriptor here */ 5984 len = UDF_EXT_LEN(udf_rw32(loc->len)); 5985 lb_num = udf_rw32(loc->loc.lb_num); 5986 vpart_num = udf_rw16(loc->loc.part_num); 5987 5988 lb_size = udf_rw32(ump->logical_vol->lb_size); 5989 num_lb = (len + lb_size -1) / lb_size; 5990 5991 udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 5992 } 5993 5994 void 5995 udf_delete_node(struct udf_node *udf_node) 5996 { 5997 void *dscr; 5998 struct long_ad *loc; 5999 int extnr, lvint, dummy; 6000 6001 if (udf_node->i_flags & IN_NO_DELETE) 6002 return; 6003 6004 /* paranoia check on integrity; should be open!; we could panic */ 6005 lvint = udf_rw32(udf_node->ump->logvol_integrity->integrity_type); 6006 if (lvint == UDF_INTEGRITY_CLOSED) 6007 printf("\tIntegrity was CLOSED!\n"); 6008 6009 /* whatever the node type, change its size to zero */ 6010 (void) udf_resize_node(udf_node, 0, &dummy); 6011 6012 /* force it to be `clean'; no use writing it out */ 6013 udf_node->i_flags &= ~(IN_MODIFIED | IN_ACCESSED | IN_ACCESS | 6014 IN_CHANGE | IN_UPDATE | IN_MODIFY); 6015 6016 /* adjust file count */ 6017 udf_adjust_filecount(udf_node, -1); 6018 6019 /* 6020 * Free its allocated descriptors; memory will be released when 6021 * vop_reclaim() is called. 6022 */ 6023 loc = &udf_node->loc; 6024 6025 dscr = udf_node->fe; 6026 udf_free_descriptor_space(udf_node, loc, dscr); 6027 dscr = udf_node->efe; 6028 udf_free_descriptor_space(udf_node, loc, dscr); 6029 6030 for (extnr = 0; extnr < UDF_MAX_ALLOC_EXTENTS; extnr++) { 6031 dscr = udf_node->ext[extnr]; 6032 loc = &udf_node->ext_loc[extnr]; 6033 udf_free_descriptor_space(udf_node, loc, dscr); 6034 } 6035 } 6036 6037 /* --------------------------------------------------------------------- */ 6038 6039 /* set new filesize; node but be LOCKED on entry and is locked on exit */ 6040 int 6041 udf_resize_node(struct udf_node *udf_node, uint64_t new_size, int *extended) 6042 { 6043 struct file_entry *fe = udf_node->fe; 6044 struct extfile_entry *efe = udf_node->efe; 6045 uint64_t file_size; 6046 int error; 6047 6048 if (fe) { 6049 file_size = udf_rw64(fe->inf_len); 6050 } else { 6051 assert(udf_node->efe); 6052 file_size = udf_rw64(efe->inf_len); 6053 } 6054 6055 DPRINTF(ATTR, ("\tchanging file length from %"PRIu64" to %"PRIu64"\n", 6056 file_size, new_size)); 6057 6058 /* if not changing, we're done */ 6059 if (file_size == new_size) 6060 return 0; 6061 6062 *extended = (new_size > file_size); 6063 if (*extended) { 6064 error = udf_grow_node(udf_node, new_size); 6065 } else { 6066 error = udf_shrink_node(udf_node, new_size); 6067 } 6068 6069 return error; 6070 } 6071 6072 6073 /* --------------------------------------------------------------------- */ 6074 6075 void 6076 udf_itimes(struct udf_node *udf_node, struct timespec *acc, 6077 struct timespec *mod, struct timespec *birth) 6078 { 6079 struct timespec now; 6080 struct file_entry *fe; 6081 struct extfile_entry *efe; 6082 struct filetimes_extattr_entry *ft_extattr; 6083 struct timestamp *atime, *mtime, *attrtime, *ctime; 6084 struct timestamp fe_ctime; 6085 struct timespec cur_birth; 6086 uint32_t offset, a_l; 6087 uint8_t *filedata; 6088 int error; 6089 6090 /* protect against rogue values */ 6091 if (!udf_node) 6092 return; 6093 6094 fe = udf_node->fe; 6095 efe = udf_node->efe; 6096 6097 if (!(udf_node->i_flags & (IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY))) 6098 return; 6099 6100 /* get descriptor information */ 6101 if (fe) { 6102 atime = &fe->atime; 6103 mtime = &fe->mtime; 6104 attrtime = &fe->attrtime; 6105 filedata = fe->data; 6106 6107 /* initial save dummy setting */ 6108 ctime = &fe_ctime; 6109 6110 /* check our extended attribute if present */ 6111 error = udf_extattr_search_intern(udf_node, 6112 UDF_FILETIMES_ATTR_NO, "", &offset, &a_l); 6113 if (!error) { 6114 ft_extattr = (struct filetimes_extattr_entry *) 6115 (filedata + offset); 6116 if (ft_extattr->existence & UDF_FILETIMES_FILE_CREATION) 6117 ctime = &ft_extattr->times[0]; 6118 } 6119 /* TODO create the extended attribute if not found ? */ 6120 } else { 6121 assert(udf_node->efe); 6122 atime = &efe->atime; 6123 mtime = &efe->mtime; 6124 attrtime = &efe->attrtime; 6125 ctime = &efe->ctime; 6126 } 6127 6128 vfs_timestamp(&now); 6129 6130 /* set access time */ 6131 if (udf_node->i_flags & IN_ACCESS) { 6132 if (acc == NULL) 6133 acc = &now; 6134 udf_timespec_to_timestamp(acc, atime); 6135 } 6136 6137 /* set modification time */ 6138 if (udf_node->i_flags & (IN_UPDATE | IN_MODIFY)) { 6139 if (mod == NULL) 6140 mod = &now; 6141 udf_timespec_to_timestamp(mod, mtime); 6142 6143 /* ensure birthtime is older than set modification! */ 6144 udf_timestamp_to_timespec(udf_node->ump, ctime, &cur_birth); 6145 if ((cur_birth.tv_sec > mod->tv_sec) || 6146 ((cur_birth.tv_sec == mod->tv_sec) && 6147 (cur_birth.tv_nsec > mod->tv_nsec))) { 6148 udf_timespec_to_timestamp(mod, ctime); 6149 } 6150 } 6151 6152 /* update birthtime if specified */ 6153 /* XXX we assume here that given birthtime is older than mod */ 6154 if (birth && (birth->tv_sec != VNOVAL)) { 6155 udf_timespec_to_timestamp(birth, ctime); 6156 } 6157 6158 /* set change time */ 6159 if (udf_node->i_flags & (IN_CHANGE | IN_MODIFY)) 6160 udf_timespec_to_timestamp(&now, attrtime); 6161 6162 /* notify updates to the node itself */ 6163 if (udf_node->i_flags & (IN_ACCESS | IN_MODIFY)) 6164 udf_node->i_flags |= IN_ACCESSED; 6165 if (udf_node->i_flags & (IN_UPDATE | IN_CHANGE)) 6166 udf_node->i_flags |= IN_MODIFIED; 6167 6168 /* clear modification flags */ 6169 udf_node->i_flags &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 6170 } 6171 6172 /* --------------------------------------------------------------------- */ 6173 6174 int 6175 udf_update(struct vnode *vp, struct timespec *acc, 6176 struct timespec *mod, struct timespec *birth, int updflags) 6177 { 6178 union dscrptr *dscrptr; 6179 struct udf_node *udf_node = VTOI(vp); 6180 struct udf_mount *ump = udf_node->ump; 6181 struct regid *impl_id; 6182 int mnt_async = (vp->v_mount->mnt_flag & MNT_ASYNC); 6183 int waitfor, flags; 6184 6185 #ifdef DEBUG 6186 char bits[128]; 6187 DPRINTF(CALL, ("udf_update(node, %p, %p, %p, %d)\n", acc, mod, birth, 6188 updflags)); 6189 snprintb(bits, sizeof(bits), IN_FLAGBITS, udf_node->i_flags); 6190 DPRINTF(CALL, ("\tnode flags %s\n", bits)); 6191 DPRINTF(CALL, ("\t\tmnt_async = %d\n", mnt_async)); 6192 #endif 6193 6194 /* set our times */ 6195 udf_itimes(udf_node, acc, mod, birth); 6196 6197 /* set our implementation id */ 6198 if (udf_node->fe) { 6199 dscrptr = (union dscrptr *) udf_node->fe; 6200 impl_id = &udf_node->fe->imp_id; 6201 } else { 6202 dscrptr = (union dscrptr *) udf_node->efe; 6203 impl_id = &udf_node->efe->imp_id; 6204 } 6205 6206 /* set our ID */ 6207 udf_set_regid(impl_id, IMPL_NAME); 6208 udf_add_impl_regid(ump, impl_id); 6209 6210 /* update our crc! on RMW we are not allowed to change a thing */ 6211 udf_validate_tag_and_crc_sums(dscrptr); 6212 6213 /* if called when mounted readonly, never write back */ 6214 if (vp->v_mount->mnt_flag & MNT_RDONLY) 6215 return 0; 6216 6217 /* check if the node is dirty 'enough'*/ 6218 if (updflags & UPDATE_CLOSE) { 6219 flags = udf_node->i_flags & (IN_MODIFIED | IN_ACCESSED); 6220 } else { 6221 flags = udf_node->i_flags & IN_MODIFIED; 6222 } 6223 if (flags == 0) 6224 return 0; 6225 6226 /* determine if we need to write sync or async */ 6227 waitfor = 0; 6228 if ((flags & IN_MODIFIED) && (mnt_async == 0)) { 6229 /* sync mounted */ 6230 waitfor = updflags & UPDATE_WAIT; 6231 if (updflags & UPDATE_DIROP) 6232 waitfor |= UPDATE_WAIT; 6233 } 6234 if (waitfor) 6235 return VOP_FSYNC(vp, FSCRED, FSYNC_WAIT, 0,0); 6236 6237 return 0; 6238 } 6239 6240 6241 /* --------------------------------------------------------------------- */ 6242 6243 6244 /* 6245 * Read one fid and process it into a dirent and advance to the next (*fid) 6246 * has to be allocated a logical block in size, (*dirent) struct dirent length 6247 */ 6248 6249 int 6250 udf_read_fid_stream(struct vnode *vp, uint64_t *offset, 6251 struct fileid_desc *fid, struct dirent *dirent) 6252 { 6253 struct udf_node *dir_node = VTOI(vp); 6254 struct udf_mount *ump = dir_node->ump; 6255 struct file_entry *fe = dir_node->fe; 6256 struct extfile_entry *efe = dir_node->efe; 6257 uint32_t fid_size, lb_size; 6258 uint64_t file_size; 6259 char *fid_name; 6260 int enough, error; 6261 6262 assert(fid); 6263 assert(dirent); 6264 assert(dir_node); 6265 assert(offset); 6266 assert(*offset != 1); 6267 6268 DPRINTF(FIDS, ("read_fid_stream called at offset %"PRIu64"\n", *offset)); 6269 /* check if we're past the end of the directory */ 6270 if (fe) { 6271 file_size = udf_rw64(fe->inf_len); 6272 } else { 6273 assert(dir_node->efe); 6274 file_size = udf_rw64(efe->inf_len); 6275 } 6276 if (*offset >= file_size) 6277 return EINVAL; 6278 6279 /* get maximum length of FID descriptor */ 6280 lb_size = udf_rw32(ump->logical_vol->lb_size); 6281 6282 /* initialise return values */ 6283 fid_size = 0; 6284 memset(dirent, 0, sizeof(struct dirent)); 6285 memset(fid, 0, lb_size); 6286 6287 enough = (file_size - (*offset) >= UDF_FID_SIZE); 6288 if (!enough) { 6289 /* short dir ... */ 6290 return EIO; 6291 } 6292 6293 error = vn_rdwr(UIO_READ, vp, 6294 fid, MIN(file_size - (*offset), lb_size), *offset, 6295 UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, FSCRED, 6296 NULL, NULL); 6297 if (error) 6298 return error; 6299 6300 DPRINTF(FIDS, ("\tfid piece read in fine\n")); 6301 /* 6302 * Check if we got a whole descriptor. 6303 * TODO Try to `resync' directory stream when something is very wrong. 6304 */ 6305 6306 /* check if our FID header is OK */ 6307 error = udf_check_tag(fid); 6308 if (error) { 6309 goto brokendir; 6310 } 6311 DPRINTF(FIDS, ("\ttag check ok\n")); 6312 6313 if (udf_rw16(fid->tag.id) != TAGID_FID) { 6314 error = EIO; 6315 goto brokendir; 6316 } 6317 DPRINTF(FIDS, ("\ttag checked ok: got TAGID_FID\n")); 6318 6319 /* check for length */ 6320 fid_size = udf_fidsize(fid); 6321 enough = (file_size - (*offset) >= fid_size); 6322 if (!enough) { 6323 error = EIO; 6324 goto brokendir; 6325 } 6326 DPRINTF(FIDS, ("\tthe complete fid is read in\n")); 6327 6328 /* check FID contents */ 6329 error = udf_check_tag_payload((union dscrptr *) fid, lb_size); 6330 brokendir: 6331 if (error) { 6332 /* note that is sometimes a bit quick to report */ 6333 printf("UDF: BROKEN DIRECTORY ENTRY\n"); 6334 /* RESYNC? */ 6335 /* TODO: use udf_resync_fid_stream */ 6336 return EIO; 6337 } 6338 DPRINTF(FIDS, ("\tpayload checked ok\n")); 6339 6340 /* we got a whole and valid descriptor! */ 6341 DPRINTF(FIDS, ("\tinterpret FID\n")); 6342 6343 /* create resulting dirent structure */ 6344 fid_name = (char *) fid->data + udf_rw16(fid->l_iu); 6345 udf_to_unix_name(dirent->d_name, NAME_MAX, 6346 fid_name, fid->l_fi, &ump->logical_vol->desc_charset); 6347 6348 /* '..' has no name, so provide one */ 6349 if (fid->file_char & UDF_FILE_CHAR_PAR) 6350 strcpy(dirent->d_name, ".."); 6351 6352 dirent->d_fileno = udf_get_node_id(&fid->icb); /* inode hash XXX */ 6353 dirent->d_namlen = strlen(dirent->d_name); 6354 dirent->d_reclen = _DIRENT_SIZE(dirent); 6355 6356 /* 6357 * Note that its not worth trying to go for the filetypes now... its 6358 * too expensive too 6359 */ 6360 dirent->d_type = DT_UNKNOWN; 6361 6362 /* initial guess for filetype we can make */ 6363 if (fid->file_char & UDF_FILE_CHAR_DIR) 6364 dirent->d_type = DT_DIR; 6365 6366 /* advance */ 6367 *offset += fid_size; 6368 6369 return error; 6370 } 6371 6372 6373 /* --------------------------------------------------------------------- */ 6374 6375 static void 6376 udf_sync_pass(struct udf_mount *ump, kauth_cred_t cred, int pass, int *ndirty) 6377 { 6378 struct udf_node *udf_node, *n_udf_node; 6379 struct vnode *vp; 6380 int vdirty, error; 6381 6382 KASSERT(mutex_owned(&ump->sync_lock)); 6383 6384 DPRINTF(SYNC, ("sync_pass %d\n", pass)); 6385 udf_node = RB_TREE_MIN(&ump->udf_node_tree); 6386 for (;udf_node; udf_node = n_udf_node) { 6387 DPRINTF(SYNC, (".")); 6388 6389 vp = udf_node->vnode; 6390 6391 n_udf_node = rb_tree_iterate(&ump->udf_node_tree, 6392 udf_node, RB_DIR_RIGHT); 6393 6394 error = vn_lock(vp, LK_EXCLUSIVE | LK_NOWAIT); 6395 if (error) { 6396 KASSERT(error == EBUSY); 6397 *ndirty += 1; 6398 continue; 6399 } 6400 6401 switch (pass) { 6402 case 1: 6403 VOP_FSYNC(vp, cred, 0 | FSYNC_DATAONLY,0,0); 6404 break; 6405 case 2: 6406 vdirty = vp->v_numoutput; 6407 if (vp->v_tag == VT_UDF) 6408 vdirty += udf_node->outstanding_bufs + 6409 udf_node->outstanding_nodedscr; 6410 if (vdirty == 0) 6411 VOP_FSYNC(vp, cred, 0,0,0); 6412 *ndirty += vdirty; 6413 break; 6414 case 3: 6415 vdirty = vp->v_numoutput; 6416 if (vp->v_tag == VT_UDF) 6417 vdirty += udf_node->outstanding_bufs + 6418 udf_node->outstanding_nodedscr; 6419 *ndirty += vdirty; 6420 break; 6421 } 6422 6423 VOP_UNLOCK(vp); 6424 } 6425 DPRINTF(SYNC, ("END sync_pass %d\n", pass)); 6426 } 6427 6428 6429 static bool 6430 udf_sync_selector(void *cl, struct vnode *vp) 6431 { 6432 struct udf_node *udf_node; 6433 6434 KASSERT(mutex_owned(vp->v_interlock)); 6435 6436 udf_node = VTOI(vp); 6437 6438 if (vp->v_vflag & VV_SYSTEM) 6439 return false; 6440 if (vp->v_type == VNON) 6441 return false; 6442 if (udf_node == NULL) 6443 return false; 6444 if ((udf_node->i_flags & (IN_ACCESSED | IN_UPDATE | IN_MODIFIED)) == 0) 6445 return false; 6446 if (LIST_EMPTY(&vp->v_dirtyblkhd) && UVM_OBJ_IS_CLEAN(&vp->v_uobj)) 6447 return false; 6448 6449 return true; 6450 } 6451 6452 void 6453 udf_do_sync(struct udf_mount *ump, kauth_cred_t cred, int waitfor) 6454 { 6455 struct vnode_iterator *marker; 6456 struct vnode *vp; 6457 struct udf_node *udf_node, *udf_next_node; 6458 int dummy, ndirty; 6459 6460 if (waitfor == MNT_LAZY) 6461 return; 6462 6463 mutex_enter(&ump->sync_lock); 6464 6465 /* Fill the rbtree with nodes to sync. */ 6466 vfs_vnode_iterator_init(ump->vfs_mountp, &marker); 6467 while ((vp = vfs_vnode_iterator_next(marker, 6468 udf_sync_selector, NULL)) != NULL) { 6469 udf_node = VTOI(vp); 6470 udf_node->i_flags |= IN_SYNCED; 6471 rb_tree_insert_node(&ump->udf_node_tree, udf_node); 6472 } 6473 vfs_vnode_iterator_destroy(marker); 6474 6475 dummy = 0; 6476 DPRINTF(CALL, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6477 DPRINTF(SYNC, ("issue VOP_FSYNC(DATA only) on all nodes\n")); 6478 udf_sync_pass(ump, cred, 1, &dummy); 6479 6480 DPRINTF(CALL, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6481 DPRINTF(SYNC, ("issue VOP_FSYNC(COMPLETE) on all finished nodes\n")); 6482 udf_sync_pass(ump, cred, 2, &dummy); 6483 6484 if (waitfor == MNT_WAIT) { 6485 recount: 6486 ndirty = ump->devvp->v_numoutput; 6487 DPRINTF(SYNC, ("counting pending blocks: on devvp %d\n", 6488 ndirty)); 6489 udf_sync_pass(ump, cred, 3, &ndirty); 6490 DPRINTF(SYNC, ("counted num dirty pending blocks %d\n", 6491 ndirty)); 6492 6493 if (ndirty) { 6494 /* 1/4 second wait */ 6495 kpause("udfsync2", false, hz/4, NULL); 6496 goto recount; 6497 } 6498 } 6499 6500 /* Clean the rbtree. */ 6501 for (udf_node = RB_TREE_MIN(&ump->udf_node_tree); 6502 udf_node; udf_node = udf_next_node) { 6503 udf_next_node = rb_tree_iterate(&ump->udf_node_tree, 6504 udf_node, RB_DIR_RIGHT); 6505 rb_tree_remove_node(&ump->udf_node_tree, udf_node); 6506 udf_node->i_flags &= ~IN_SYNCED; 6507 vrele(udf_node->vnode); 6508 } 6509 6510 mutex_exit(&ump->sync_lock); 6511 } 6512 6513 /* --------------------------------------------------------------------- */ 6514 6515 /* 6516 * Read and write file extent in/from the buffer. 6517 * 6518 * The splitup of the extent into seperate request-buffers is to minimise 6519 * copying around as much as possible. 6520 * 6521 * block based file reading and writing 6522 */ 6523 6524 static int 6525 udf_read_internal(struct udf_node *node, uint8_t *blob) 6526 { 6527 struct udf_mount *ump; 6528 struct file_entry *fe = node->fe; 6529 struct extfile_entry *efe = node->efe; 6530 uint64_t inflen; 6531 uint32_t sector_size; 6532 uint8_t *srcpos; 6533 int icbflags, addr_type; 6534 6535 /* get extent and do some paranoia checks */ 6536 ump = node->ump; 6537 sector_size = ump->discinfo.sector_size; 6538 6539 /* 6540 * XXX there should be real bounds-checking logic here, 6541 * in case ->l_ea or ->inf_len contains nonsense. 6542 */ 6543 6544 if (fe) { 6545 inflen = udf_rw64(fe->inf_len); 6546 srcpos = &fe->data[0] + udf_rw32(fe->l_ea); 6547 icbflags = udf_rw16(fe->icbtag.flags); 6548 } else { 6549 assert(node->efe); 6550 inflen = udf_rw64(efe->inf_len); 6551 srcpos = &efe->data[0] + udf_rw32(efe->l_ea); 6552 icbflags = udf_rw16(efe->icbtag.flags); 6553 } 6554 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6555 6556 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6557 __USE(addr_type); 6558 assert(inflen < sector_size); 6559 6560 /* copy out info */ 6561 memcpy(blob, srcpos, inflen); 6562 memset(&blob[inflen], 0, sector_size - inflen); 6563 6564 return 0; 6565 } 6566 6567 6568 static int 6569 udf_write_internal(struct udf_node *node, uint8_t *blob) 6570 { 6571 struct udf_mount *ump; 6572 struct file_entry *fe = node->fe; 6573 struct extfile_entry *efe = node->efe; 6574 uint64_t inflen; 6575 uint32_t sector_size; 6576 uint8_t *pos; 6577 int icbflags, addr_type; 6578 6579 /* get extent and do some paranoia checks */ 6580 ump = node->ump; 6581 sector_size = ump->discinfo.sector_size; 6582 6583 if (fe) { 6584 inflen = udf_rw64(fe->inf_len); 6585 pos = &fe->data[0] + udf_rw32(fe->l_ea); 6586 icbflags = udf_rw16(fe->icbtag.flags); 6587 } else { 6588 assert(node->efe); 6589 inflen = udf_rw64(efe->inf_len); 6590 pos = &efe->data[0] + udf_rw32(efe->l_ea); 6591 icbflags = udf_rw16(efe->icbtag.flags); 6592 } 6593 addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 6594 6595 assert(addr_type == UDF_ICB_INTERN_ALLOC); 6596 __USE(addr_type); 6597 assert(inflen < sector_size); 6598 __USE(sector_size); 6599 6600 /* copy in blob */ 6601 /* memset(pos, 0, inflen); */ 6602 memcpy(pos, blob, inflen); 6603 6604 return 0; 6605 } 6606 6607 6608 void 6609 udf_read_filebuf(struct udf_node *udf_node, struct buf *buf) 6610 { 6611 struct buf *nestbuf; 6612 struct udf_mount *ump = udf_node->ump; 6613 uint64_t *mapping; 6614 uint64_t run_start; 6615 uint32_t sector_size; 6616 uint32_t buf_offset, sector, rbuflen, rblk; 6617 uint32_t from, lblkno; 6618 uint32_t sectors; 6619 uint8_t *buf_pos; 6620 int error, run_length, what; 6621 6622 sector_size = udf_node->ump->discinfo.sector_size; 6623 6624 from = buf->b_blkno; 6625 sectors = buf->b_bcount / sector_size; 6626 6627 what = udf_get_c_type(udf_node); 6628 6629 /* assure we have enough translation slots */ 6630 KASSERT(buf->b_bcount / sector_size <= UDF_MAX_MAPPINGS); 6631 KASSERT(MAXPHYS / sector_size <= UDF_MAX_MAPPINGS); 6632 6633 if (sectors > UDF_MAX_MAPPINGS) { 6634 printf("udf_read_filebuf: implementation limit on bufsize\n"); 6635 buf->b_error = EIO; 6636 biodone(buf); 6637 return; 6638 } 6639 6640 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6641 6642 error = 0; 6643 DPRINTF(READ, ("\ttranslate %d-%d\n", from, sectors)); 6644 error = udf_translate_file_extent(udf_node, from, sectors, mapping); 6645 if (error) { 6646 buf->b_error = error; 6647 biodone(buf); 6648 goto out; 6649 } 6650 DPRINTF(READ, ("\ttranslate extent went OK\n")); 6651 6652 /* pre-check if its an internal */ 6653 if (*mapping == UDF_TRANS_INTERN) { 6654 error = udf_read_internal(udf_node, (uint8_t *) buf->b_data); 6655 if (error) 6656 buf->b_error = error; 6657 biodone(buf); 6658 goto out; 6659 } 6660 DPRINTF(READ, ("\tnot intern\n")); 6661 6662 #ifdef DEBUG 6663 if (udf_verbose & UDF_DEBUG_TRANSLATE) { 6664 printf("Returned translation table:\n"); 6665 for (sector = 0; sector < sectors; sector++) { 6666 printf("%d : %"PRIu64"\n", sector, mapping[sector]); 6667 } 6668 } 6669 #endif 6670 6671 /* request read-in of data from disc sheduler */ 6672 buf->b_resid = buf->b_bcount; 6673 for (sector = 0; sector < sectors; sector++) { 6674 buf_offset = sector * sector_size; 6675 buf_pos = (uint8_t *) buf->b_data + buf_offset; 6676 DPRINTF(READ, ("\tprocessing rel sector %d\n", sector)); 6677 6678 /* check if its zero or unmapped to stop reading */ 6679 switch (mapping[sector]) { 6680 case UDF_TRANS_UNMAPPED: 6681 case UDF_TRANS_ZERO: 6682 /* copy zero sector TODO runlength like below */ 6683 memset(buf_pos, 0, sector_size); 6684 DPRINTF(READ, ("\treturning zero sector\n")); 6685 nestiobuf_done(buf, sector_size, 0); 6686 break; 6687 default : 6688 DPRINTF(READ, ("\tread sector " 6689 "%"PRIu64"\n", mapping[sector])); 6690 6691 lblkno = from + sector; 6692 run_start = mapping[sector]; 6693 run_length = 1; 6694 while (sector < sectors-1) { 6695 if (mapping[sector+1] != mapping[sector]+1) 6696 break; 6697 run_length++; 6698 sector++; 6699 } 6700 6701 /* 6702 * nest an iobuf and mark it for async reading. Since 6703 * we're using nested buffers, they can't be cached by 6704 * design. 6705 */ 6706 rbuflen = run_length * sector_size; 6707 rblk = run_start * (sector_size/DEV_BSIZE); 6708 6709 nestbuf = getiobuf(NULL, true); 6710 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6711 /* nestbuf is B_ASYNC */ 6712 6713 /* identify this nestbuf */ 6714 nestbuf->b_lblkno = lblkno; 6715 assert(nestbuf->b_vp == udf_node->vnode); 6716 6717 /* CD shedules on raw blkno */ 6718 nestbuf->b_blkno = rblk; 6719 nestbuf->b_proc = NULL; 6720 nestbuf->b_rawblkno = rblk; 6721 nestbuf->b_udf_c_type = what; 6722 6723 udf_discstrat_queuebuf(ump, nestbuf); 6724 } 6725 } 6726 out: 6727 /* if we're synchronously reading, wait for the completion */ 6728 if ((buf->b_flags & B_ASYNC) == 0) 6729 biowait(buf); 6730 6731 DPRINTF(READ, ("\tend of read_filebuf\n")); 6732 free(mapping, M_TEMP); 6733 return; 6734 } 6735 6736 6737 void 6738 udf_write_filebuf(struct udf_node *udf_node, struct buf *buf) 6739 { 6740 struct buf *nestbuf; 6741 struct udf_mount *ump = udf_node->ump; 6742 uint64_t *mapping; 6743 uint64_t run_start; 6744 uint32_t lb_size; 6745 uint32_t buf_offset, lb_num, rbuflen, rblk; 6746 uint32_t from, lblkno; 6747 uint32_t num_lb; 6748 int error, run_length, what, s; 6749 6750 lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 6751 6752 from = buf->b_blkno; 6753 num_lb = buf->b_bcount / lb_size; 6754 6755 what = udf_get_c_type(udf_node); 6756 6757 /* assure we have enough translation slots */ 6758 KASSERT(buf->b_bcount / lb_size <= UDF_MAX_MAPPINGS); 6759 KASSERT(MAXPHYS / lb_size <= UDF_MAX_MAPPINGS); 6760 6761 if (num_lb > UDF_MAX_MAPPINGS) { 6762 printf("udf_write_filebuf: implementation limit on bufsize\n"); 6763 buf->b_error = EIO; 6764 biodone(buf); 6765 return; 6766 } 6767 6768 mapping = malloc(sizeof(*mapping) * UDF_MAX_MAPPINGS, M_TEMP, M_WAITOK); 6769 6770 error = 0; 6771 DPRINTF(WRITE, ("\ttranslate %d-%d\n", from, num_lb)); 6772 error = udf_translate_file_extent(udf_node, from, num_lb, mapping); 6773 if (error) { 6774 buf->b_error = error; 6775 biodone(buf); 6776 goto out; 6777 } 6778 DPRINTF(WRITE, ("\ttranslate extent went OK\n")); 6779 6780 /* if its internally mapped, we can write it in the descriptor itself */ 6781 if (*mapping == UDF_TRANS_INTERN) { 6782 /* TODO paranoia check if we ARE going to have enough space */ 6783 error = udf_write_internal(udf_node, (uint8_t *) buf->b_data); 6784 if (error) 6785 buf->b_error = error; 6786 biodone(buf); 6787 goto out; 6788 } 6789 DPRINTF(WRITE, ("\tnot intern\n")); 6790 6791 /* request write out of data to disc sheduler */ 6792 buf->b_resid = buf->b_bcount; 6793 for (lb_num = 0; lb_num < num_lb; lb_num++) { 6794 buf_offset = lb_num * lb_size; 6795 DPRINTF(WRITE, ("\tprocessing rel lb_num %d\n", lb_num)); 6796 6797 /* 6798 * Mappings are not that important here. Just before we write 6799 * the lb_num we late-allocate them when needed and update the 6800 * mapping in the udf_node. 6801 */ 6802 6803 /* XXX why not ignore the mapping altogether ? */ 6804 DPRINTF(WRITE, ("\twrite lb_num " 6805 "%"PRIu64, mapping[lb_num])); 6806 6807 lblkno = from + lb_num; 6808 run_start = mapping[lb_num]; 6809 run_length = 1; 6810 while (lb_num < num_lb-1) { 6811 if (mapping[lb_num+1] != mapping[lb_num]+1) 6812 if (mapping[lb_num+1] != mapping[lb_num]) 6813 break; 6814 run_length++; 6815 lb_num++; 6816 } 6817 DPRINTF(WRITE, ("+ %d\n", run_length)); 6818 6819 /* nest an iobuf on the master buffer for the extent */ 6820 rbuflen = run_length * lb_size; 6821 rblk = run_start * (lb_size/DEV_BSIZE); 6822 6823 nestbuf = getiobuf(NULL, true); 6824 nestiobuf_setup(buf, nestbuf, buf_offset, rbuflen); 6825 /* nestbuf is B_ASYNC */ 6826 6827 /* identify this nestbuf */ 6828 nestbuf->b_lblkno = lblkno; 6829 KASSERT(nestbuf->b_vp == udf_node->vnode); 6830 6831 /* CD shedules on raw blkno */ 6832 nestbuf->b_blkno = rblk; 6833 nestbuf->b_proc = NULL; 6834 nestbuf->b_rawblkno = rblk; 6835 nestbuf->b_udf_c_type = what; 6836 6837 /* increment our outstanding bufs counter */ 6838 s = splbio(); 6839 udf_node->outstanding_bufs++; 6840 splx(s); 6841 6842 udf_discstrat_queuebuf(ump, nestbuf); 6843 } 6844 out: 6845 /* if we're synchronously writing, wait for the completion */ 6846 if ((buf->b_flags & B_ASYNC) == 0) 6847 biowait(buf); 6848 6849 DPRINTF(WRITE, ("\tend of write_filebuf\n")); 6850 free(mapping, M_TEMP); 6851 return; 6852 } 6853 6854 /* --------------------------------------------------------------------- */ 6855
Indexes created Thu Sep 25 06:09:39 GMT 2025