1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley 8 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 9 * Support code is derived from software contributed to Berkeley 10 * by Atsushi Murai (amurai@spec.co.jp). 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/namei.h> 40 #include <sys/kernel.h> 41 #include <sys/conf.h> 42 #include <sys/stat.h> 43 #include <sys/bio.h> 44 #include <sys/buf.h> 45 #include <sys/mount.h> 46 #include <sys/vnode.h> 47 #include <sys/malloc.h> 48 #include <sys/dirent.h> 49 #include <sys/unistd.h> 50 #include <sys/filio.h> 51 #include <sys/sysctl.h> 52 53 #include <vm/vm.h> 54 #include <vm/vnode_pager.h> 55 #include <vm/uma.h> 56 57 #include <fs/cd9660/iso.h> 58 #include <fs/cd9660/cd9660_node.h> 59 #include <fs/cd9660/iso_rrip.h> 60 61 static vop_setattr_t cd9660_setattr; 62 static vop_open_t cd9660_open; 63 static vop_access_t cd9660_access; 64 static vop_getattr_t cd9660_getattr; 65 static vop_ioctl_t cd9660_ioctl; 66 static vop_pathconf_t cd9660_pathconf; 67 static vop_read_t cd9660_read; 68 struct isoreaddir; 69 static int iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off); 70 static int iso_shipdir(struct isoreaddir *idp); 71 static vop_readdir_t cd9660_readdir; 72 static vop_readlink_t cd9660_readlink; 73 static vop_strategy_t cd9660_strategy; 74 static vop_vptofh_t cd9660_vptofh; 75 static vop_getpages_t cd9660_getpages; 76 77 /* 78 * Setattr call. Only allowed for block and character special devices. 79 */ 80 static int 81 cd9660_setattr(struct vop_setattr_args *ap) 82 { 83 struct vnode *vp = ap->a_vp; 84 struct vattr *vap = ap->a_vap; 85 86 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL || 87 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL || 88 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) 89 return (EROFS); 90 if (vap->va_size != (u_quad_t)VNOVAL) { 91 switch (vp->v_type) { 92 case VDIR: 93 return (EISDIR); 94 case VLNK: 95 case VREG: 96 return (EROFS); 97 case VCHR: 98 case VBLK: 99 case VSOCK: 100 case VFIFO: 101 case VNON: 102 case VBAD: 103 case VMARKER: 104 return (0); 105 } 106 } 107 return (0); 108 } 109 110 /* 111 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. 112 * The mode is shifted to select the owner/group/other fields. The 113 * super user is granted all permissions. 114 */ 115 /* ARGSUSED */ 116 static int 117 cd9660_access(struct vop_access_args *ap) 118 { 119 struct vnode *vp = ap->a_vp; 120 struct iso_node *ip = VTOI(vp); 121 accmode_t accmode = ap->a_accmode; 122 123 if (vp->v_type == VCHR || vp->v_type == VBLK) 124 return (EOPNOTSUPP); 125 126 /* 127 * Disallow write attempts unless the file is a socket, 128 * fifo, or a block or character device resident on the 129 * filesystem. 130 */ 131 if (accmode & VWRITE) { 132 switch (vp->v_type) { 133 case VDIR: 134 case VLNK: 135 case VREG: 136 return (EROFS); 137 /* NOT REACHED */ 138 default: 139 break; 140 } 141 } 142 143 return (vaccess(vp->v_type, ip->inode.iso_mode, ip->inode.iso_uid, 144 ip->inode.iso_gid, ap->a_accmode, ap->a_cred)); 145 } 146 147 static int 148 cd9660_open(struct vop_open_args *ap) 149 { 150 struct vnode *vp = ap->a_vp; 151 struct iso_node *ip = VTOI(vp); 152 153 if (vp->v_type == VCHR || vp->v_type == VBLK) 154 return (EOPNOTSUPP); 155 156 vnode_create_vobject(vp, ip->i_size, ap->a_td); 157 return (0); 158 } 159 160 static int 161 cd9660_getattr(struct vop_getattr_args *ap) 162 163 { 164 struct vnode *vp = ap->a_vp; 165 struct vattr *vap = ap->a_vap; 166 struct iso_node *ip = VTOI(vp); 167 168 vap->va_fsid = dev2udev(ip->i_mnt->im_dev); 169 vap->va_fileid = ip->i_number; 170 171 vap->va_mode = ip->inode.iso_mode; 172 vap->va_nlink = ip->inode.iso_links; 173 vap->va_uid = ip->inode.iso_uid; 174 vap->va_gid = ip->inode.iso_gid; 175 vap->va_atime = ip->inode.iso_atime; 176 vap->va_mtime = ip->inode.iso_mtime; 177 vap->va_ctime = ip->inode.iso_ctime; 178 vap->va_rdev = ip->inode.iso_rdev; 179 180 vap->va_size = (u_quad_t) ip->i_size; 181 if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) { 182 struct vop_readlink_args rdlnk; 183 struct iovec aiov; 184 struct uio auio; 185 char *cp; 186 187 cp = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 188 aiov.iov_base = cp; 189 aiov.iov_len = MAXPATHLEN; 190 auio.uio_iov = &aiov; 191 auio.uio_iovcnt = 1; 192 auio.uio_offset = 0; 193 auio.uio_rw = UIO_READ; 194 auio.uio_segflg = UIO_SYSSPACE; 195 auio.uio_td = curthread; 196 auio.uio_resid = MAXPATHLEN; 197 rdlnk.a_uio = &auio; 198 rdlnk.a_vp = ap->a_vp; 199 rdlnk.a_cred = ap->a_cred; 200 if (cd9660_readlink(&rdlnk) == 0) 201 vap->va_size = MAXPATHLEN - auio.uio_resid; 202 free(cp, M_TEMP); 203 } 204 vap->va_flags = 0; 205 vap->va_gen = 1; 206 vap->va_blocksize = ip->i_mnt->logical_block_size; 207 vap->va_bytes = (u_quad_t) ip->i_size; 208 vap->va_type = vp->v_type; 209 vap->va_filerev = 0; 210 return (0); 211 } 212 213 /* 214 * Vnode op for ioctl. 215 */ 216 static int 217 cd9660_ioctl(struct vop_ioctl_args *ap) 218 { 219 struct vnode *vp; 220 struct iso_node *ip; 221 int error; 222 223 vp = ap->a_vp; 224 vn_lock(vp, LK_SHARED | LK_RETRY); 225 if (VN_IS_DOOMED(vp)) { 226 VOP_UNLOCK(vp); 227 return (EBADF); 228 } 229 if (vp->v_type == VCHR || vp->v_type == VBLK) { 230 VOP_UNLOCK(vp); 231 return (EOPNOTSUPP); 232 } 233 234 ip = VTOI(vp); 235 error = 0; 236 237 switch (ap->a_command) { 238 case FIOGETLBA: 239 *(int *)(ap->a_data) = ip->iso_start; 240 break; 241 default: 242 error = ENOTTY; 243 break; 244 } 245 246 VOP_UNLOCK(vp); 247 return (error); 248 } 249 250 /* 251 * Vnode op for reading. 252 */ 253 static int 254 cd9660_read(struct vop_read_args *ap) 255 { 256 struct vnode *vp = ap->a_vp; 257 struct uio *uio = ap->a_uio; 258 struct iso_node *ip = VTOI(vp); 259 struct iso_mnt *imp; 260 struct buf *bp; 261 daddr_t lbn, rablock; 262 off_t diff; 263 int rasize, error = 0; 264 int seqcount; 265 long size, n, on; 266 267 if (vp->v_type == VCHR || vp->v_type == VBLK) 268 return (EOPNOTSUPP); 269 270 seqcount = ap->a_ioflag >> IO_SEQSHIFT; 271 272 if (uio->uio_resid == 0) 273 return (0); 274 if (uio->uio_offset < 0) 275 return (EINVAL); 276 imp = ip->i_mnt; 277 do { 278 lbn = lblkno(imp, uio->uio_offset); 279 on = blkoff(imp, uio->uio_offset); 280 n = MIN(imp->logical_block_size - on, uio->uio_resid); 281 diff = (off_t)ip->i_size - uio->uio_offset; 282 if (diff <= 0) 283 return (0); 284 if (diff < n) 285 n = diff; 286 size = blksize(imp, ip, lbn); 287 rablock = lbn + 1; 288 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) { 289 if (lblktosize(imp, rablock) < ip->i_size) 290 error = cluster_read(vp, (off_t)ip->i_size, 291 lbn, size, NOCRED, uio->uio_resid, 292 (ap->a_ioflag >> 16), 0, &bp); 293 else 294 error = bread(vp, lbn, size, NOCRED, &bp); 295 } else { 296 if (seqcount > 1 && 297 lblktosize(imp, rablock) < ip->i_size) { 298 rasize = blksize(imp, ip, rablock); 299 error = breadn(vp, lbn, size, &rablock, 300 &rasize, 1, NOCRED, &bp); 301 } else 302 error = bread(vp, lbn, size, NOCRED, &bp); 303 } 304 if (error != 0) 305 return (error); 306 n = MIN(n, size - bp->b_resid); 307 308 error = uiomove(bp->b_data + on, (int)n, uio); 309 brelse(bp); 310 } while (error == 0 && uio->uio_resid > 0 && n != 0); 311 return (error); 312 } 313 314 /* 315 * Structure for reading directories 316 */ 317 struct isoreaddir { 318 struct dirent saveent; 319 struct dirent assocent; 320 struct dirent current; 321 off_t saveoff; 322 off_t assocoff; 323 off_t curroff; 324 struct uio *uio; 325 off_t uio_off; 326 int eofflag; 327 uint64_t *cookies; 328 int ncookies; 329 }; 330 331 static int 332 iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off) 333 { 334 int error; 335 336 dp->d_reclen = GENERIC_DIRSIZ(dp); 337 dirent_terminate(dp); 338 339 if (idp->uio->uio_resid < dp->d_reclen) { 340 idp->eofflag = 0; 341 return (-1); 342 } 343 344 if (idp->cookies) { 345 if (idp->ncookies <= 0) { 346 idp->eofflag = 0; 347 return (-1); 348 } 349 350 *idp->cookies++ = off; 351 --idp->ncookies; 352 } 353 354 if ((error = uiomove(dp, dp->d_reclen, idp->uio)) != 0) 355 return (error); 356 idp->uio_off = off; 357 return (0); 358 } 359 360 static int 361 iso_shipdir(struct isoreaddir *idp) 362 { 363 struct dirent *dp; 364 int cl, sl, assoc; 365 int error; 366 char *cname, *sname; 367 368 cl = idp->current.d_namlen; 369 cname = idp->current.d_name; 370 assoc = (cl > 1) && (*cname == ASSOCCHAR); 371 if (assoc) { 372 cl--; 373 cname++; 374 } 375 376 dp = &idp->saveent; 377 sname = dp->d_name; 378 if (!(sl = dp->d_namlen)) { 379 dp = &idp->assocent; 380 sname = dp->d_name + 1; 381 sl = dp->d_namlen - 1; 382 } 383 if (sl > 0) { 384 if (sl != cl 385 || bcmp(sname,cname,sl)) { 386 if (idp->assocent.d_namlen) { 387 if ((error = iso_uiodir(idp,&idp->assocent,idp->assocoff)) != 0) 388 return (error); 389 idp->assocent.d_namlen = 0; 390 } 391 if (idp->saveent.d_namlen) { 392 if ((error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) != 0) 393 return (error); 394 idp->saveent.d_namlen = 0; 395 } 396 } 397 } 398 idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current); 399 if (assoc) { 400 idp->assocoff = idp->curroff; 401 memcpy(&idp->assocent, &idp->current, idp->current.d_reclen); 402 } else { 403 idp->saveoff = idp->curroff; 404 memcpy(&idp->saveent, &idp->current, idp->current.d_reclen); 405 } 406 return (0); 407 } 408 409 /* 410 * Vnode op for readdir 411 */ 412 static int 413 cd9660_readdir(struct vop_readdir_args *ap) 414 { 415 struct uio *uio = ap->a_uio; 416 struct isoreaddir *idp; 417 struct vnode *vdp = ap->a_vp; 418 struct iso_node *dp; 419 struct iso_mnt *imp; 420 struct buf *bp = NULL; 421 struct iso_directory_record *ep; 422 int entryoffsetinblock; 423 doff_t endsearch; 424 u_long bmask; 425 int error = 0; 426 int reclen; 427 u_short namelen; 428 u_int ncookies = 0; 429 uint64_t *cookies = NULL; 430 cd_ino_t ino; 431 432 dp = VTOI(vdp); 433 imp = dp->i_mnt; 434 bmask = imp->im_bmask; 435 436 idp = malloc(sizeof(*idp), M_TEMP, M_WAITOK); 437 idp->saveent.d_namlen = idp->assocent.d_namlen = 0; 438 /* 439 * XXX 440 * Is it worth trying to figure out the type? 441 */ 442 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type = 443 DT_UNKNOWN; 444 idp->uio = uio; 445 if (ap->a_ncookies == NULL) { 446 idp->cookies = NULL; 447 } else { 448 /* 449 * Guess the number of cookies needed. 450 */ 451 ncookies = uio->uio_resid / 16; 452 cookies = malloc(ncookies * sizeof(*cookies), M_TEMP, M_WAITOK); 453 idp->cookies = cookies; 454 idp->ncookies = ncookies; 455 } 456 idp->eofflag = 1; 457 idp->curroff = uio->uio_offset; 458 idp->uio_off = uio->uio_offset; 459 460 if ((entryoffsetinblock = idp->curroff & bmask) && 461 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) { 462 free(idp, M_TEMP); 463 return (error); 464 } 465 endsearch = dp->i_size; 466 467 while (idp->curroff < endsearch) { 468 /* 469 * If offset is on a block boundary, 470 * read the next directory block. 471 * Release previous if it exists. 472 */ 473 if ((idp->curroff & bmask) == 0) { 474 if (bp != NULL) 475 brelse(bp); 476 if ((error = 477 cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp)) != 0) 478 break; 479 entryoffsetinblock = 0; 480 } 481 /* 482 * Get pointer to next entry. 483 */ 484 ep = (struct iso_directory_record *) 485 ((char *)bp->b_data + entryoffsetinblock); 486 487 reclen = isonum_711(ep->length); 488 if (reclen == 0) { 489 /* skip to next block, if any */ 490 idp->curroff = 491 (idp->curroff & ~bmask) + imp->logical_block_size; 492 continue; 493 } 494 495 if (reclen < ISO_DIRECTORY_RECORD_SIZE) { 496 error = EINVAL; 497 /* illegal entry, stop */ 498 break; 499 } 500 501 if (entryoffsetinblock + reclen > imp->logical_block_size) { 502 error = EINVAL; 503 /* illegal directory, so stop looking */ 504 break; 505 } 506 507 idp->current.d_namlen = isonum_711(ep->name_len); 508 509 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) { 510 error = EINVAL; 511 /* illegal entry, stop */ 512 break; 513 } 514 515 if (isonum_711(ep->flags)&2) 516 idp->current.d_fileno = isodirino(ep, imp); 517 else 518 idp->current.d_fileno = dbtob(bp->b_blkno) + 519 entryoffsetinblock; 520 521 idp->curroff += reclen; 522 /* NOTE: d_off is the offset of *next* entry. */ 523 idp->current.d_off = idp->curroff; 524 525 switch (imp->iso_ftype) { 526 case ISO_FTYPE_RRIP: 527 ino = idp->current.d_fileno; 528 cd9660_rrip_getname(ep, idp->current.d_name, &namelen, 529 &ino, imp); 530 idp->current.d_fileno = ino; 531 idp->current.d_namlen = (u_char)namelen; 532 if (idp->current.d_namlen) 533 error = iso_uiodir(idp,&idp->current,idp->curroff); 534 break; 535 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/ 536 strcpy(idp->current.d_name,".."); 537 if (idp->current.d_namlen == 1 && ep->name[0] == 0) { 538 idp->current.d_namlen = 1; 539 error = iso_uiodir(idp,&idp->current,idp->curroff); 540 } else if (idp->current.d_namlen == 1 && ep->name[0] == 1) { 541 idp->current.d_namlen = 2; 542 error = iso_uiodir(idp,&idp->current,idp->curroff); 543 } else { 544 isofntrans(ep->name,idp->current.d_namlen, 545 idp->current.d_name, &namelen, 546 imp->iso_ftype == ISO_FTYPE_9660, 547 isonum_711(ep->flags)&4, 548 imp->joliet_level, 549 imp->im_flags, 550 imp->im_d2l); 551 idp->current.d_namlen = (u_char)namelen; 552 if (imp->iso_ftype == ISO_FTYPE_DEFAULT) 553 error = iso_shipdir(idp); 554 else 555 error = iso_uiodir(idp,&idp->current,idp->curroff); 556 } 557 } 558 if (error) 559 break; 560 561 entryoffsetinblock += reclen; 562 } 563 564 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { 565 idp->current.d_namlen = 0; 566 error = iso_shipdir(idp); 567 } 568 if (error < 0) 569 error = 0; 570 571 if (ap->a_ncookies != NULL) { 572 if (error) 573 free(cookies, M_TEMP); 574 else { 575 /* 576 * Work out the number of cookies actually used. 577 */ 578 *ap->a_ncookies = ncookies - idp->ncookies; 579 *ap->a_cookies = cookies; 580 } 581 } 582 583 if (bp) 584 brelse (bp); 585 586 uio->uio_offset = idp->uio_off; 587 *ap->a_eofflag = idp->eofflag; 588 589 free(idp, M_TEMP); 590 591 return (error); 592 } 593 594 /* 595 * Return target name of a symbolic link 596 * Shouldn't we get the parent vnode and read the data from there? 597 * This could eventually result in deadlocks in cd9660_lookup. 598 * But otherwise the block read here is in the block buffer two times. 599 */ 600 typedef struct iso_directory_record ISODIR; 601 typedef struct iso_node ISONODE; 602 typedef struct iso_mnt ISOMNT; 603 static int 604 cd9660_readlink(struct vop_readlink_args *ap) 605 { 606 ISONODE *ip; 607 ISODIR *dirp; 608 ISOMNT *imp; 609 struct buf *bp; 610 struct uio *uio; 611 u_short symlen; 612 int error; 613 char *symname; 614 615 ip = VTOI(ap->a_vp); 616 imp = ip->i_mnt; 617 uio = ap->a_uio; 618 619 if (imp->iso_ftype != ISO_FTYPE_RRIP) 620 return (EINVAL); 621 622 /* 623 * Get parents directory record block that this inode included. 624 */ 625 error = bread(imp->im_devvp, 626 (ip->i_number >> imp->im_bshift) << 627 (imp->im_bshift - DEV_BSHIFT), 628 imp->logical_block_size, NOCRED, &bp); 629 if (error) { 630 return (EINVAL); 631 } 632 633 /* 634 * Setup the directory pointer for this inode 635 */ 636 dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask)); 637 638 /* 639 * Just make sure, we have a right one.... 640 * 1: Check not cross boundary on block 641 */ 642 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) 643 > (unsigned)imp->logical_block_size) { 644 brelse(bp); 645 return (EINVAL); 646 } 647 648 /* 649 * Now get a buffer 650 * Abuse a namei buffer for now. 651 */ 652 if (uio->uio_segflg == UIO_SYSSPACE) 653 symname = uio->uio_iov->iov_base; 654 else 655 symname = uma_zalloc(namei_zone, M_WAITOK); 656 657 /* 658 * Ok, we just gathering a symbolic name in SL record. 659 */ 660 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { 661 if (uio->uio_segflg != UIO_SYSSPACE) 662 uma_zfree(namei_zone, symname); 663 brelse(bp); 664 return (EINVAL); 665 } 666 /* 667 * Don't forget before you leave from home ;-) 668 */ 669 brelse(bp); 670 671 /* 672 * return with the symbolic name to caller's. 673 */ 674 if (uio->uio_segflg != UIO_SYSSPACE) { 675 error = uiomove(symname, symlen, uio); 676 uma_zfree(namei_zone, symname); 677 return (error); 678 } 679 uio->uio_resid -= symlen; 680 uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen; 681 uio->uio_iov->iov_len -= symlen; 682 return (0); 683 } 684 685 /* 686 * Calculate the logical to physical mapping if not done already, 687 * then call the device strategy routine. 688 */ 689 static int 690 cd9660_strategy(struct vop_strategy_args *ap) 691 { 692 struct buf *bp = ap->a_bp; 693 struct vnode *vp = ap->a_vp; 694 struct iso_node *ip; 695 struct bufobj *bo; 696 697 ip = VTOI(vp); 698 if (vp->v_type == VBLK || vp->v_type == VCHR) 699 panic("cd9660_strategy: spec"); 700 if (bp->b_blkno == bp->b_lblkno) { 701 bp->b_blkno = (ip->iso_start + bp->b_lblkno) << 702 (ip->i_mnt->im_bshift - DEV_BSHIFT); 703 } 704 bp->b_iooffset = dbtob(bp->b_blkno); 705 bo = ip->i_mnt->im_bo; 706 BO_STRATEGY(bo, bp); 707 return (0); 708 } 709 710 /* 711 * Return POSIX pathconf information applicable to cd9660 filesystems. 712 */ 713 static int 714 cd9660_pathconf(struct vop_pathconf_args *ap) 715 { 716 717 switch (ap->a_name) { 718 case _PC_FILESIZEBITS: 719 *ap->a_retval = 32; 720 return (0); 721 case _PC_LINK_MAX: 722 *ap->a_retval = 1; 723 return (0); 724 case _PC_NAME_MAX: 725 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) 726 *ap->a_retval = NAME_MAX; 727 else 728 *ap->a_retval = 37; 729 return (0); 730 case _PC_SYMLINK_MAX: 731 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) { 732 *ap->a_retval = MAXPATHLEN; 733 return (0); 734 } 735 return (EINVAL); 736 case _PC_NO_TRUNC: 737 *ap->a_retval = 1; 738 return (0); 739 default: 740 return (vop_stdpathconf(ap)); 741 } 742 /* NOTREACHED */ 743 } 744 745 /* 746 * Vnode pointer to File handle 747 */ 748 static int 749 cd9660_vptofh(struct vop_vptofh_args *ap) 750 { 751 struct ifid ifh; 752 struct iso_node *ip = VTOI(ap->a_vp); 753 754 ifh.ifid_len = sizeof(struct ifid); 755 756 ifh.ifid_ino = ip->i_number; 757 ifh.ifid_start = ip->iso_start; 758 /* 759 * This intentionally uses sizeof(ifh) in order to not copy stack 760 * garbage on ILP32. 761 */ 762 memcpy(ap->a_fhp, &ifh, sizeof(ifh)); 763 764 #ifdef ISOFS_DBG 765 printf("vptofh: ino %jd, start %ld\n", 766 (uintmax_t)ifh.ifid_ino, ifh.ifid_start); 767 #endif 768 769 return (0); 770 } 771 772 SYSCTL_NODE(_vfs, OID_AUTO, cd9660, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 773 "cd9660 filesystem"); 774 static int use_buf_pager = 1; 775 SYSCTL_INT(_vfs_cd9660, OID_AUTO, use_buf_pager, CTLFLAG_RWTUN, 776 &use_buf_pager, 0, 777 "Use buffer pager instead of bmap"); 778 779 static daddr_t 780 cd9660_gbp_getblkno(struct vnode *vp, vm_ooffset_t off) 781 { 782 783 return (lblkno(VTOI(vp)->i_mnt, off)); 784 } 785 786 static int 787 cd9660_gbp_getblksz(struct vnode *vp, daddr_t lbn, long *sz) 788 { 789 struct iso_node *ip; 790 791 ip = VTOI(vp); 792 *sz = blksize(ip->i_mnt, ip, lbn); 793 return (0); 794 } 795 796 static int 797 cd9660_getpages(struct vop_getpages_args *ap) 798 { 799 struct vnode *vp; 800 801 vp = ap->a_vp; 802 if (vp->v_type == VCHR || vp->v_type == VBLK) 803 return (EOPNOTSUPP); 804 805 if (use_buf_pager) 806 return (vfs_bio_getpages(vp, ap->a_m, ap->a_count, 807 ap->a_rbehind, ap->a_rahead, cd9660_gbp_getblkno, 808 cd9660_gbp_getblksz)); 809 return (vnode_pager_generic_getpages(vp, ap->a_m, ap->a_count, 810 ap->a_rbehind, ap->a_rahead, NULL, NULL)); 811 } 812 813 /* 814 * Global vfs data structures for cd9660 815 */ 816 struct vop_vector cd9660_vnodeops = { 817 .vop_default = &default_vnodeops, 818 .vop_open = cd9660_open, 819 .vop_access = cd9660_access, 820 .vop_bmap = cd9660_bmap, 821 .vop_cachedlookup = cd9660_lookup, 822 .vop_getattr = cd9660_getattr, 823 .vop_inactive = cd9660_inactive, 824 .vop_ioctl = cd9660_ioctl, 825 .vop_lookup = vfs_cache_lookup, 826 .vop_pathconf = cd9660_pathconf, 827 .vop_read = cd9660_read, 828 .vop_readdir = cd9660_readdir, 829 .vop_readlink = cd9660_readlink, 830 .vop_reclaim = cd9660_reclaim, 831 .vop_setattr = cd9660_setattr, 832 .vop_strategy = cd9660_strategy, 833 .vop_vptofh = cd9660_vptofh, 834 .vop_getpages = cd9660_getpages, 835 }; 836 VFS_VOP_VECTOR_REGISTER(cd9660_vnodeops); 837 838 /* 839 * Special device vnode ops 840 */ 841 842 struct vop_vector cd9660_fifoops = { 843 .vop_default = &fifo_specops, 844 .vop_access = cd9660_access, 845 .vop_getattr = cd9660_getattr, 846 .vop_inactive = cd9660_inactive, 847 .vop_reclaim = cd9660_reclaim, 848 .vop_setattr = cd9660_setattr, 849 .vop_vptofh = cd9660_vptofh, 850 }; 851 VFS_VOP_VECTOR_REGISTER(cd9660_fifoops); 852