udf_readwrite.c revision 1.1.10.3
1 /* $NetBSD: udf_readwrite.c,v 1.1.10.3 2008/09/18 04:36:56 wrstuden Exp $ */ 2 3 /* 4 * Copyright (c) 2007, 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 #include <sys/cdefs.h> 30 #ifndef lint 31 __KERNEL_RCSID(0, "$NetBSD: udf_readwrite.c,v 1.1.10.3 2008/09/18 04:36:56 wrstuden Exp $"); 32 #endif /* not lint */ 33 34 35 #if defined(_KERNEL_OPT) 36 #include "opt_quota.h" 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 <sys/kthread.h> 60 #include <dev/clock_subr.h> 61 62 #include <fs/udf/ecma167-udf.h> 63 #include <fs/udf/udf_mount.h> 64 65 #include "udf.h" 66 #include "udf_subr.h" 67 #include "udf_bswap.h" 68 69 70 #define VTOI(vnode) ((struct udf_node *) vnode->v_data) 71 72 /* --------------------------------------------------------------------- */ 73 74 void 75 udf_fixup_fid_block(uint8_t *blob, int lb_size, 76 int rfix_pos, int max_rfix_pos, uint32_t lb_num) 77 { 78 struct fileid_desc *fid; 79 uint8_t *fid_pos; 80 int fid_len, found; 81 82 /* needs to be word aligned */ 83 KASSERT(rfix_pos % 4 == 0); 84 85 /* first resync with the FID stream !!! */ 86 found = 0; 87 while (rfix_pos + sizeof(struct desc_tag) <= max_rfix_pos) { 88 fid_pos = blob + rfix_pos; 89 fid = (struct fileid_desc *) fid_pos; 90 if (udf_rw16(fid->tag.id) == TAGID_FID) { 91 if (udf_check_tag((union dscrptr *) fid) == 0) 92 found = 1; 93 } 94 if (found) 95 break; 96 /* try next location; can only be 4 bytes aligned */ 97 rfix_pos += 4; 98 } 99 100 /* walk over the fids */ 101 fid_pos = blob + rfix_pos; 102 while (rfix_pos + sizeof(struct desc_tag) <= max_rfix_pos) { 103 fid = (struct fileid_desc *) fid_pos; 104 if (udf_rw16(fid->tag.id) != TAGID_FID) { 105 /* end of FID stream; end of directory or currupted */ 106 break; 107 } 108 109 /* update sector number and recalculate checkum */ 110 fid->tag.tag_loc = udf_rw32(lb_num); 111 udf_validate_tag_sum((union dscrptr *) fid); 112 113 /* if the FID crosses the memory, we're done! */ 114 if (rfix_pos + UDF_FID_SIZE >= max_rfix_pos) 115 break; 116 117 fid_len = udf_fidsize(fid); 118 fid_pos += fid_len; 119 rfix_pos += fid_len; 120 } 121 } 122 123 124 void 125 udf_fixup_internal_extattr(uint8_t *blob, uint32_t lb_num) 126 { 127 struct desc_tag *tag; 128 struct file_entry *fe; 129 struct extfile_entry *efe; 130 struct extattrhdr_desc *eahdr; 131 int l_ea; 132 133 /* get information from fe/efe */ 134 tag = (struct desc_tag *) blob; 135 switch (udf_rw16(tag->id)) { 136 case TAGID_FENTRY : 137 fe = (struct file_entry *) blob; 138 l_ea = udf_rw32(fe->l_ea); 139 eahdr = (struct extattrhdr_desc *) fe->data; 140 break; 141 case TAGID_EXTFENTRY : 142 efe = (struct extfile_entry *) blob; 143 l_ea = udf_rw32(efe->l_ea); 144 eahdr = (struct extattrhdr_desc *) efe->data; 145 break; 146 case TAGID_INDIRECTENTRY : 147 case TAGID_ALLOCEXTENT : 148 case TAGID_EXTATTR_HDR : 149 return; 150 default: 151 panic("%s: passed bad tag\n", __func__); 152 } 153 154 /* something recorded here? (why am i called?) */ 155 if (l_ea == 0) 156 return; 157 158 #if 0 159 /* check extended attribute tag */ 160 /* TODO XXX what to do when we encounter an error here? */ 161 error = udf_check_tag(eahdr); 162 if (error) 163 return; /* for now */ 164 if (udf_rw16(eahdr->tag.id) != TAGID_EXTATTR_HDR) 165 return; /* for now */ 166 error = udf_check_tag_payload(eahdr, sizeof(struct extattrhdr_desc)); 167 if (error) 168 return; /* for now */ 169 #endif 170 171 DPRINTF(EXTATTR, ("node fixup: found %d bytes of extended attributes\n", 172 l_ea)); 173 174 /* fixup eahdr tag */ 175 eahdr->tag.tag_loc = udf_rw32(lb_num); 176 udf_validate_tag_and_crc_sums((union dscrptr *) eahdr); 177 } 178 179 180 void 181 udf_fixup_node_internals(struct udf_mount *ump, uint8_t *blob, int udf_c_type) 182 { 183 struct desc_tag *tag, *sbm_tag; 184 struct file_entry *fe; 185 struct extfile_entry *efe; 186 struct alloc_ext_entry *ext; 187 uint32_t lb_size, lb_num; 188 uint32_t intern_pos, max_intern_pos; 189 int icbflags, addr_type, file_type, intern, has_fids, has_sbm, l_ea; 190 191 lb_size = udf_rw32(ump->logical_vol->lb_size); 192 /* if its not a node we're done */ 193 if (udf_c_type != UDF_C_NODE) 194 return; 195 196 /* NOTE this could also be done in write_internal */ 197 /* start of a descriptor */ 198 l_ea = 0; 199 has_fids = 0; 200 has_sbm = 0; 201 intern = 0; 202 file_type = 0; 203 max_intern_pos = intern_pos = lb_num = 0; /* shut up gcc! */ 204 205 tag = (struct desc_tag *) blob; 206 switch (udf_rw16(tag->id)) { 207 case TAGID_FENTRY : 208 fe = (struct file_entry *) tag; 209 l_ea = udf_rw32(fe->l_ea); 210 icbflags = udf_rw16(fe->icbtag.flags); 211 addr_type = (icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK); 212 file_type = fe->icbtag.file_type; 213 intern = (addr_type == UDF_ICB_INTERN_ALLOC); 214 intern_pos = UDF_FENTRY_SIZE + l_ea; 215 max_intern_pos = intern_pos + udf_rw64(fe->inf_len); 216 lb_num = udf_rw32(fe->tag.tag_loc); 217 break; 218 case TAGID_EXTFENTRY : 219 efe = (struct extfile_entry *) tag; 220 l_ea = udf_rw32(efe->l_ea); 221 icbflags = udf_rw16(efe->icbtag.flags); 222 addr_type = (icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK); 223 file_type = efe->icbtag.file_type; 224 intern = (addr_type == UDF_ICB_INTERN_ALLOC); 225 intern_pos = UDF_EXTFENTRY_SIZE + l_ea; 226 max_intern_pos = intern_pos + udf_rw64(efe->inf_len); 227 lb_num = udf_rw32(efe->tag.tag_loc); 228 break; 229 case TAGID_INDIRECTENTRY : 230 case TAGID_EXTATTR_HDR : 231 break; 232 case TAGID_ALLOCEXTENT : 233 /* force crclen to 8 for UDF version < 2.01 */ 234 ext = (struct alloc_ext_entry *) tag; 235 if (udf_rw16(ump->logvol_info->min_udf_readver) <= 0x200) 236 ext->tag.desc_crc_len = udf_rw16(8); 237 break; 238 default: 239 panic("%s: passed bad tag\n", __func__); 240 break; 241 } 242 243 /* determine what to fix if its internally recorded */ 244 if (intern) { 245 has_fids = (file_type == UDF_ICB_FILETYPE_DIRECTORY) || 246 (file_type == UDF_ICB_FILETYPE_STREAMDIR); 247 has_sbm = (file_type == UDF_ICB_FILETYPE_META_BITMAP); 248 } 249 250 /* fixup internal extended attributes if present */ 251 if (l_ea) 252 udf_fixup_internal_extattr(blob, lb_num); 253 254 /* fixup fids lb numbers */ 255 if (has_fids) 256 udf_fixup_fid_block(blob, lb_size, intern_pos, 257 max_intern_pos, lb_num); 258 259 /* fixup space bitmap descriptor */ 260 if (has_sbm) { 261 sbm_tag = (struct desc_tag *) (blob + intern_pos); 262 sbm_tag->tag_loc = tag->tag_loc; 263 udf_validate_tag_and_crc_sums((uint8_t *) sbm_tag); 264 } 265 266 udf_validate_tag_and_crc_sums(blob); 267 } 268 269 /* --------------------------------------------------------------------- */ 270 271 /* 272 * Set of generic descriptor readers and writers and their helper functions. 273 * Descriptors inside `logical space' i.e. inside logically mapped partitions 274 * can never be longer than one logical sector. 275 * 276 * NOTE that these functions *can* be used by the sheduler backends to read 277 * node descriptors too. 278 * 279 * For reading, the size of allocated piece is returned in multiple of sector 280 * size due to udf_calc_udf_malloc_size(). 281 */ 282 283 284 /* SYNC reading of n blocks from specified sector */ 285 /* NOTE only used by udf_read_phys_dscr */ 286 static int 287 udf_read_phys_sectors(struct udf_mount *ump, int what, void *blob, 288 uint32_t start, uint32_t sectors) 289 { 290 struct buf *buf, *nestbuf; 291 uint32_t buf_offset; 292 off_t lblkno, rblkno; 293 int sector_size = ump->discinfo.sector_size; 294 int blks = sector_size / DEV_BSIZE; 295 int piece; 296 int error; 297 298 DPRINTF(READ, ("udf_intbreadn() : sectors = %d, sector_size = %d\n", 299 sectors, sector_size)); 300 buf = getiobuf(ump->devvp, true); 301 buf->b_flags = B_READ; 302 buf->b_cflags = BC_BUSY; /* needed? */ 303 buf->b_iodone = NULL; 304 buf->b_data = blob; 305 buf->b_bcount = sectors * sector_size; 306 buf->b_resid = buf->b_bcount; 307 buf->b_bufsize = buf->b_bcount; 308 buf->b_private = NULL; /* not needed yet */ 309 BIO_SETPRIO(buf, BPRIO_DEFAULT); 310 buf->b_lblkno = buf->b_blkno = buf->b_rawblkno = start * blks; 311 buf->b_proc = NULL; 312 313 error = 0; 314 buf_offset = 0; 315 rblkno = start; 316 lblkno = 0; 317 while ((sectors > 0) && (error == 0)) { 318 piece = MIN(MAXPHYS/sector_size, sectors); 319 DPRINTF(READ, ("read in %d + %d\n", (uint32_t) rblkno, piece)); 320 321 nestbuf = getiobuf(NULL, true); 322 nestiobuf_setup(buf, nestbuf, buf_offset, piece * sector_size); 323 /* nestbuf is B_ASYNC */ 324 325 /* identify this nestbuf */ 326 nestbuf->b_lblkno = lblkno; 327 328 /* CD shedules on raw blkno */ 329 nestbuf->b_blkno = rblkno * blks; 330 nestbuf->b_proc = NULL; 331 nestbuf->b_rawblkno = rblkno * blks; 332 nestbuf->b_udf_c_type = what; 333 334 udf_discstrat_queuebuf(ump, nestbuf); 335 336 lblkno += piece; 337 rblkno += piece; 338 buf_offset += piece * sector_size; 339 sectors -= piece; 340 } 341 error = biowait(buf); 342 putiobuf(buf); 343 344 return error; 345 } 346 347 348 /* synchronous generic descriptor read */ 349 int 350 udf_read_phys_dscr(struct udf_mount *ump, uint32_t sector, 351 struct malloc_type *mtype, union dscrptr **dstp) 352 { 353 union dscrptr *dst, *new_dst; 354 uint8_t *pos; 355 int sectors, dscrlen; 356 int i, error, sector_size; 357 358 sector_size = ump->discinfo.sector_size; 359 360 *dstp = dst = NULL; 361 dscrlen = sector_size; 362 363 /* read initial piece */ 364 dst = malloc(sector_size, mtype, M_WAITOK); 365 error = udf_read_phys_sectors(ump, UDF_C_DSCR, dst, sector, 1); 366 DPRINTFIF(DESCRIPTOR, error, ("read error (%d)\n", error)); 367 368 if (!error) { 369 /* check if its a valid tag */ 370 error = udf_check_tag(dst); 371 if (error) { 372 /* check if its an empty block */ 373 pos = (uint8_t *) dst; 374 for (i = 0; i < sector_size; i++, pos++) { 375 if (*pos) break; 376 } 377 if (i == sector_size) { 378 /* return no error but with no dscrptr */ 379 /* dispose first block */ 380 free(dst, mtype); 381 return 0; 382 } 383 } 384 /* calculate descriptor size */ 385 dscrlen = udf_tagsize(dst, sector_size); 386 } 387 DPRINTFIF(DESCRIPTOR, error, ("bad tag checksum\n")); 388 389 if (!error && (dscrlen > sector_size)) { 390 DPRINTF(DESCRIPTOR, ("multi block descriptor read\n")); 391 /* 392 * Read the rest of descriptor. Since it is only used at mount 393 * time its overdone to define and use a specific udf_intbreadn 394 * for this alone. 395 */ 396 397 new_dst = realloc(dst, dscrlen, mtype, M_WAITOK); 398 if (new_dst == NULL) { 399 free(dst, mtype); 400 return ENOMEM; 401 } 402 dst = new_dst; 403 404 sectors = (dscrlen + sector_size -1) / sector_size; 405 DPRINTF(DESCRIPTOR, ("dscrlen = %d (%d blk)\n", dscrlen, sectors)); 406 407 pos = (uint8_t *) dst + sector_size; 408 error = udf_read_phys_sectors(ump, UDF_C_DSCR, pos, 409 sector + 1, sectors-1); 410 411 DPRINTFIF(DESCRIPTOR, error, ("read error on multi (%d)\n", 412 error)); 413 } 414 if (!error) { 415 error = udf_check_tag_payload(dst, dscrlen); 416 DPRINTFIF(DESCRIPTOR, error, ("bad payload check sum\n")); 417 } 418 if (error && dst) { 419 free(dst, mtype); 420 dst = NULL; 421 } 422 *dstp = dst; 423 424 return error; 425 } 426 427 428 static void 429 udf_write_phys_buf(struct udf_mount *ump, int what, struct buf *buf) 430 { 431 struct buf *nestbuf; 432 uint32_t buf_offset; 433 off_t lblkno, rblkno; 434 int sector_size = ump->discinfo.sector_size; 435 int blks = sector_size / DEV_BSIZE; 436 uint32_t sectors; 437 int piece; 438 int error; 439 440 sectors = buf->b_bcount / sector_size; 441 DPRINTF(WRITE, ("udf_intbwriten() : sectors = %d, sector_size = %d\n", 442 sectors, sector_size)); 443 444 /* don't forget to increase pending count for the bwrite itself */ 445 /* panic("NO WRITING\n"); */ 446 if (buf->b_vp) { 447 mutex_enter(&buf->b_vp->v_interlock); 448 buf->b_vp->v_numoutput++; 449 mutex_exit(&buf->b_vp->v_interlock); 450 } 451 452 error = 0; 453 buf_offset = 0; 454 rblkno = buf->b_blkno / blks; 455 lblkno = 0; 456 while ((sectors > 0) && (error == 0)) { 457 piece = MIN(MAXPHYS/sector_size, sectors); 458 DPRINTF(WRITE, ("write out %d + %d\n", 459 (uint32_t) rblkno, piece)); 460 461 nestbuf = getiobuf(NULL, true); 462 nestiobuf_setup(buf, nestbuf, buf_offset, piece * sector_size); 463 /* nestbuf is B_ASYNC */ 464 465 /* identify this nestbuf */ 466 nestbuf->b_lblkno = lblkno; 467 468 /* CD shedules on raw blkno */ 469 nestbuf->b_blkno = rblkno * blks; 470 nestbuf->b_proc = NULL; 471 nestbuf->b_rawblkno = rblkno * blks; 472 nestbuf->b_udf_c_type = what; 473 474 udf_discstrat_queuebuf(ump, nestbuf); 475 476 lblkno += piece; 477 rblkno += piece; 478 buf_offset += piece * sector_size; 479 sectors -= piece; 480 } 481 } 482 483 484 /* synchronous generic descriptor write */ 485 int 486 udf_write_phys_dscr_sync(struct udf_mount *ump, struct udf_node *udf_node, int what, 487 union dscrptr *dscr, uint32_t sector, uint32_t logsector) 488 { 489 struct vnode *vp; 490 struct buf *buf; 491 int sector_size = ump->discinfo.sector_size; 492 int blks = sector_size / DEV_BSIZE; 493 int dscrlen; 494 int error; 495 496 /* set sector number in the descriptor and validate */ 497 dscr->tag.tag_loc = udf_rw32(logsector); 498 udf_validate_tag_and_crc_sums(dscr); 499 500 /* calculate descriptor size */ 501 dscrlen = udf_tagsize(dscr, sector_size); 502 503 /* get transfer buffer */ 504 vp = udf_node ? udf_node->vnode : ump->devvp; 505 buf = getiobuf(vp, true); 506 buf->b_flags = B_WRITE; 507 buf->b_cflags = BC_BUSY; /* needed? */ 508 buf->b_iodone = NULL; 509 buf->b_data = (void *) dscr; 510 buf->b_bcount = dscrlen; 511 buf->b_resid = buf->b_bcount; 512 buf->b_bufsize = buf->b_bcount; 513 buf->b_private = NULL; /* not needed yet */ 514 BIO_SETPRIO(buf, BPRIO_DEFAULT); 515 buf->b_lblkno = buf->b_blkno = buf->b_rawblkno = sector * blks; 516 buf->b_proc = NULL; 517 518 /* do the write, wait and return error */ 519 udf_write_phys_buf(ump, what, buf); 520 error = biowait(buf); 521 putiobuf(buf); 522 523 return error; 524 } 525 526 527 /* asynchronous generic descriptor write */ 528 int 529 udf_write_phys_dscr_async(struct udf_mount *ump, struct udf_node *udf_node, 530 int what, union dscrptr *dscr, 531 uint32_t sector, uint32_t logsector, 532 void (*dscrwr_callback)(struct buf *)) 533 { 534 struct vnode *vp; 535 struct buf *buf; 536 int dscrlen; 537 int sector_size = ump->discinfo.sector_size; 538 int blks = sector_size / DEV_BSIZE; 539 540 KASSERT(dscrwr_callback); 541 DPRINTF(NODE, ("udf_write_phys_dscr_async() called\n")); 542 543 /* set sector number in the descriptor and validate */ 544 dscr->tag.tag_loc = udf_rw32(logsector); 545 udf_validate_tag_and_crc_sums(dscr); 546 547 /* calculate descriptor size */ 548 dscrlen = udf_tagsize(dscr, sector_size); 549 550 /* get transfer buffer */ 551 vp = udf_node ? udf_node->vnode : ump->devvp; 552 buf = getiobuf(vp, true); 553 buf->b_flags = B_WRITE; // | B_ASYNC; 554 buf->b_cflags = BC_BUSY; 555 buf->b_iodone = dscrwr_callback; 556 buf->b_data = dscr; 557 buf->b_bcount = dscrlen; 558 buf->b_resid = buf->b_bcount; 559 buf->b_bufsize = buf->b_bcount; 560 buf->b_private = NULL; /* not needed yet */ 561 BIO_SETPRIO(buf, BPRIO_DEFAULT); 562 buf->b_lblkno = buf->b_blkno = buf->b_rawblkno = sector * blks; 563 buf->b_proc = NULL; 564 565 /* do the write and return no error */ 566 udf_write_phys_buf(ump, what, buf); 567 return 0; 568 } 569 570 /* --------------------------------------------------------------------- */ 571 572 /* disc strategy dispatchers */ 573 574 int 575 udf_create_logvol_dscr(struct udf_mount *ump, struct udf_node *udf_node, struct long_ad *icb, 576 union dscrptr **dscrptr) 577 { 578 struct udf_strategy *strategy = ump->strategy; 579 struct udf_strat_args args; 580 int error; 581 582 KASSERT(strategy); 583 args.ump = ump; 584 args.udf_node = udf_node; 585 args.icb = icb; 586 args.dscr = NULL; 587 588 error = (strategy->create_logvol_dscr)(&args); 589 *dscrptr = args.dscr; 590 591 return error; 592 } 593 594 595 void 596 udf_free_logvol_dscr(struct udf_mount *ump, struct long_ad *icb, 597 void *dscr) 598 { 599 struct udf_strategy *strategy = ump->strategy; 600 struct udf_strat_args args; 601 602 KASSERT(strategy); 603 args.ump = ump; 604 args.icb = icb; 605 args.dscr = dscr; 606 607 (strategy->free_logvol_dscr)(&args); 608 } 609 610 611 int 612 udf_read_logvol_dscr(struct udf_mount *ump, struct long_ad *icb, 613 union dscrptr **dscrptr) 614 { 615 struct udf_strategy *strategy = ump->strategy; 616 struct udf_strat_args args; 617 int error; 618 619 KASSERT(strategy); 620 args.ump = ump; 621 args.icb = icb; 622 args.dscr = NULL; 623 624 error = (strategy->read_logvol_dscr)(&args); 625 *dscrptr = args.dscr; 626 627 return error; 628 } 629 630 631 int 632 udf_write_logvol_dscr(struct udf_node *udf_node, union dscrptr *dscr, 633 struct long_ad *icb, int waitfor) 634 { 635 struct udf_strategy *strategy = udf_node->ump->strategy; 636 struct udf_strat_args args; 637 int error; 638 639 KASSERT(strategy); 640 args.ump = udf_node->ump; 641 args.udf_node = udf_node; 642 args.icb = icb; 643 args.dscr = dscr; 644 args.waitfor = waitfor; 645 646 error = (strategy->write_logvol_dscr)(&args); 647 return error; 648 } 649 650 651 void 652 udf_discstrat_queuebuf(struct udf_mount *ump, struct buf *nestbuf) 653 { 654 struct udf_strategy *strategy = ump->strategy; 655 struct udf_strat_args args; 656 657 KASSERT(strategy); 658 args.ump = ump; 659 args.nestbuf = nestbuf; 660 661 (strategy->queuebuf)(&args); 662 } 663 664 665 void 666 udf_discstrat_init(struct udf_mount *ump) 667 { 668 struct udf_strategy *strategy = ump->strategy; 669 struct udf_strat_args args; 670 671 KASSERT(strategy); 672 args.ump = ump; 673 (strategy->discstrat_init)(&args); 674 } 675 676 677 void udf_discstrat_finish(struct udf_mount *ump) 678 { 679 struct udf_strategy *strategy = ump->strategy; 680 struct udf_strat_args args; 681 682 /* strategy might not have been set, so ignore if not set */ 683 if (strategy) { 684 args.ump = ump; 685 (strategy->discstrat_finish)(&args); 686 } 687 } 688 689 /* --------------------------------------------------------------------- */ 690 691
Indexes created Mon Sep 22 10:09:38 GMT 2025