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 * @(#)cd9660_vnops.c 8.19 (Berkeley) 5/27/95 37 */ 38 39 #include <sys/cdefs.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/namei.h> 43 #include <sys/kernel.h> 44 #include <sys/conf.h> 45 #include <sys/stat.h> 46 #include <sys/bio.h> 47 #include <sys/buf.h> 48 #include <sys/mount.h> 49 #include <sys/vnode.h> 50 #include <sys/malloc.h> 51 #include <sys/dirent.h> 52 #include <sys/unistd.h> 53 #include <sys/filio.h> 54 #include <sys/sysctl.h> 55 56 #include <vm/vm.h> 57 #include <vm/vnode_pager.h> 58 #include <vm/uma.h> 59 60 #include <fs/cd9660/iso.h> 61 #include <fs/cd9660/cd9660_node.h> 62 #include <fs/cd9660/iso_rrip.h> 63 64 static vop_setattr_t cd9660_setattr; 65 static vop_open_t cd9660_open; 66 static vop_access_t cd9660_access; 67 static vop_getattr_t cd9660_getattr; 68 static vop_ioctl_t cd9660_ioctl; 69 static vop_pathconf_t cd9660_pathconf; 70 static vop_read_t cd9660_read; 71 struct isoreaddir; 72 static int iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off); 73 static int iso_shipdir(struct isoreaddir *idp); 74 static vop_readdir_t cd9660_readdir; 75 static vop_readlink_t cd9660_readlink; 76 static vop_strategy_t cd9660_strategy; 77 static vop_vptofh_t cd9660_vptofh; 78 static vop_getpages_t cd9660_getpages; 79 80 /* 81 * Setattr call. Only allowed for block and character special devices. 82 */ 83 static int 84 cd9660_setattr(struct vop_setattr_args *ap) 85 { 86 struct vnode *vp = ap->a_vp; 87 struct vattr *vap = ap->a_vap; 88 89 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL || 90 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL || 91 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) 92 return (EROFS); 93 if (vap->va_size != (u_quad_t)VNOVAL) { 94 switch (vp->v_type) { 95 case VDIR: 96 return (EISDIR); 97 case VLNK: 98 case VREG: 99 return (EROFS); 100 case VCHR: 101 case VBLK: 102 case VSOCK: 103 case VFIFO: 104 case VNON: 105 case VBAD: 106 case VMARKER: 107 return (0); 108 } 109 } 110 return (0); 111 } 112 113 /* 114 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. 115 * The mode is shifted to select the owner/group/other fields. The 116 * super user is granted all permissions. 117 */ 118 /* ARGSUSED */ 119 static int 120 cd9660_access(struct vop_access_args *ap) 121 { 122 struct vnode *vp = ap->a_vp; 123 struct iso_node *ip = VTOI(vp); 124 accmode_t accmode = ap->a_accmode; 125 126 if (vp->v_type == VCHR || vp->v_type == VBLK) 127 return (EOPNOTSUPP); 128 129 /* 130 * Disallow write attempts unless the file is a socket, 131 * fifo, or a block or character device resident on the 132 * filesystem. 133 */ 134 if (accmode & VWRITE) { 135 switch (vp->v_type) { 136 case VDIR: 137 case VLNK: 138 case VREG: 139 return (EROFS); 140 /* NOT REACHED */ 141 default: 142 break; 143 } 144 } 145 146 return (vaccess(vp->v_type, ip->inode.iso_mode, ip->inode.iso_uid, 147 ip->inode.iso_gid, ap->a_accmode, ap->a_cred)); 148 } 149 150 static int 151 cd9660_open(struct vop_open_args *ap) 152 { 153 struct vnode *vp = ap->a_vp; 154 struct iso_node *ip = VTOI(vp); 155 156 if (vp->v_type == VCHR || vp->v_type == VBLK) 157 return (EOPNOTSUPP); 158 159 vnode_create_vobject(vp, ip->i_size, ap->a_td); 160 return (0); 161 } 162 163 static int 164 cd9660_getattr(struct vop_getattr_args *ap) 165 166 { 167 struct vnode *vp = ap->a_vp; 168 struct vattr *vap = ap->a_vap; 169 struct iso_node *ip = VTOI(vp); 170 171 vap->va_fsid = dev2udev(ip->i_mnt->im_dev); 172 vap->va_fileid = ip->i_number; 173 174 vap->va_mode = ip->inode.iso_mode; 175 vap->va_nlink = ip->inode.iso_links; 176 vap->va_uid = ip->inode.iso_uid; 177 vap->va_gid = ip->inode.iso_gid; 178 vap->va_atime = ip->inode.iso_atime; 179 vap->va_mtime = ip->inode.iso_mtime; 180 vap->va_ctime = ip->inode.iso_ctime; 181 vap->va_rdev = ip->inode.iso_rdev; 182 183 vap->va_size = (u_quad_t) ip->i_size; 184 if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) { 185 struct vop_readlink_args rdlnk; 186 struct iovec aiov; 187 struct uio auio; 188 char *cp; 189 190 cp = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 191 aiov.iov_base = cp; 192 aiov.iov_len = MAXPATHLEN; 193 auio.uio_iov = &aiov; 194 auio.uio_iovcnt = 1; 195 auio.uio_offset = 0; 196 auio.uio_rw = UIO_READ; 197 auio.uio_segflg = UIO_SYSSPACE; 198 auio.uio_td = curthread; 199 auio.uio_resid = MAXPATHLEN; 200 rdlnk.a_uio = &auio; 201 rdlnk.a_vp = ap->a_vp; 202 rdlnk.a_cred = ap->a_cred; 203 if (cd9660_readlink(&rdlnk) == 0) 204 vap->va_size = MAXPATHLEN - auio.uio_resid; 205 free(cp, M_TEMP); 206 } 207 vap->va_flags = 0; 208 vap->va_gen = 1; 209 vap->va_blocksize = ip->i_mnt->logical_block_size; 210 vap->va_bytes = (u_quad_t) ip->i_size; 211 vap->va_type = vp->v_type; 212 vap->va_filerev = 0; 213 return (0); 214 } 215 216 /* 217 * Vnode op for ioctl. 218 */ 219 static int 220 cd9660_ioctl(struct vop_ioctl_args *ap) 221 { 222 struct vnode *vp; 223 struct iso_node *ip; 224 int error; 225 226 vp = ap->a_vp; 227 vn_lock(vp, LK_SHARED | LK_RETRY); 228 if (VN_IS_DOOMED(vp)) { 229 VOP_UNLOCK(vp); 230 return (EBADF); 231 } 232 if (vp->v_type == VCHR || vp->v_type == VBLK) { 233 VOP_UNLOCK(vp); 234 return (EOPNOTSUPP); 235 } 236 237 ip = VTOI(vp); 238 error = 0; 239 240 switch (ap->a_command) { 241 case FIOGETLBA: 242 *(int *)(ap->a_data) = ip->iso_start; 243 break; 244 default: 245 error = ENOTTY; 246 break; 247 } 248 249 VOP_UNLOCK(vp); 250 return (error); 251 } 252 253 /* 254 * Vnode op for reading. 255 */ 256 static int 257 cd9660_read(struct vop_read_args *ap) 258 { 259 struct vnode *vp = ap->a_vp; 260 struct uio *uio = ap->a_uio; 261 struct iso_node *ip = VTOI(vp); 262 struct iso_mnt *imp; 263 struct buf *bp; 264 daddr_t lbn, rablock; 265 off_t diff; 266 int rasize, error = 0; 267 int seqcount; 268 long size, n, on; 269 270 if (vp->v_type == VCHR || vp->v_type == VBLK) 271 return (EOPNOTSUPP); 272 273 seqcount = ap->a_ioflag >> IO_SEQSHIFT; 274 275 if (uio->uio_resid == 0) 276 return (0); 277 if (uio->uio_offset < 0) 278 return (EINVAL); 279 imp = ip->i_mnt; 280 do { 281 lbn = lblkno(imp, uio->uio_offset); 282 on = blkoff(imp, uio->uio_offset); 283 n = MIN(imp->logical_block_size - on, uio->uio_resid); 284 diff = (off_t)ip->i_size - uio->uio_offset; 285 if (diff <= 0) 286 return (0); 287 if (diff < n) 288 n = diff; 289 size = blksize(imp, ip, lbn); 290 rablock = lbn + 1; 291 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) { 292 if (lblktosize(imp, rablock) < ip->i_size) 293 error = cluster_read(vp, (off_t)ip->i_size, 294 lbn, size, NOCRED, uio->uio_resid, 295 (ap->a_ioflag >> 16), 0, &bp); 296 else 297 error = bread(vp, lbn, size, NOCRED, &bp); 298 } else { 299 if (seqcount > 1 && 300 lblktosize(imp, rablock) < ip->i_size) { 301 rasize = blksize(imp, ip, rablock); 302 error = breadn(vp, lbn, size, &rablock, 303 &rasize, 1, NOCRED, &bp); 304 } else 305 error = bread(vp, lbn, size, NOCRED, &bp); 306 } 307 if (error != 0) 308 return (error); 309 n = MIN(n, size - bp->b_resid); 310 311 error = uiomove(bp->b_data + on, (int)n, uio); 312 brelse(bp); 313 } while (error == 0 && uio->uio_resid > 0 && n != 0); 314 return (error); 315 } 316 317 /* 318 * Structure for reading directories 319 */ 320 struct isoreaddir { 321 struct dirent saveent; 322 struct dirent assocent; 323 struct dirent current; 324 off_t saveoff; 325 off_t assocoff; 326 off_t curroff; 327 struct uio *uio; 328 off_t uio_off; 329 int eofflag; 330 uint64_t *cookies; 331 int ncookies; 332 }; 333 334 static int 335 iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off) 336 { 337 int error; 338 339 dp->d_reclen = GENERIC_DIRSIZ(dp); 340 dirent_terminate(dp); 341 342 if (idp->uio->uio_resid < dp->d_reclen) { 343 idp->eofflag = 0; 344 return (-1); 345 } 346 347 if (idp->cookies) { 348 if (idp->ncookies <= 0) { 349 idp->eofflag = 0; 350 return (-1); 351 } 352 353 *idp->cookies++ = off; 354 --idp->ncookies; 355 } 356 357 if ((error = uiomove(dp, dp->d_reclen, idp->uio)) != 0) 358 return (error); 359 idp->uio_off = off; 360 return (0); 361 } 362 363 static int 364 iso_shipdir(struct isoreaddir *idp) 365 { 366 struct dirent *dp; 367 int cl, sl, assoc; 368 int error; 369 char *cname, *sname; 370 371 cl = idp->current.d_namlen; 372 cname = idp->current.d_name; 373 assoc = (cl > 1) && (*cname == ASSOCCHAR); 374 if (assoc) { 375 cl--; 376 cname++; 377 } 378 379 dp = &idp->saveent; 380 sname = dp->d_name; 381 if (!(sl = dp->d_namlen)) { 382 dp = &idp->assocent; 383 sname = dp->d_name + 1; 384 sl = dp->d_namlen - 1; 385 } 386 if (sl > 0) { 387 if (sl != cl 388 || bcmp(sname,cname,sl)) { 389 if (idp->assocent.d_namlen) { 390 if ((error = iso_uiodir(idp,&idp->assocent,idp->assocoff)) != 0) 391 return (error); 392 idp->assocent.d_namlen = 0; 393 } 394 if (idp->saveent.d_namlen) { 395 if ((error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) != 0) 396 return (error); 397 idp->saveent.d_namlen = 0; 398 } 399 } 400 } 401 idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current); 402 if (assoc) { 403 idp->assocoff = idp->curroff; 404 memcpy(&idp->assocent, &idp->current, idp->current.d_reclen); 405 } else { 406 idp->saveoff = idp->curroff; 407 memcpy(&idp->saveent, &idp->current, idp->current.d_reclen); 408 } 409 return (0); 410 } 411 412 /* 413 * Vnode op for readdir 414 */ 415 static int 416 cd9660_readdir(struct vop_readdir_args *ap) 417 { 418 struct uio *uio = ap->a_uio; 419 struct isoreaddir *idp; 420 struct vnode *vdp = ap->a_vp; 421 struct iso_node *dp; 422 struct iso_mnt *imp; 423 struct buf *bp = NULL; 424 struct iso_directory_record *ep; 425 int entryoffsetinblock; 426 doff_t endsearch; 427 u_long bmask; 428 int error = 0; 429 int reclen; 430 u_short namelen; 431 u_int ncookies = 0; 432 uint64_t *cookies = NULL; 433 cd_ino_t ino; 434 435 dp = VTOI(vdp); 436 imp = dp->i_mnt; 437 bmask = imp->im_bmask; 438 439 idp = malloc(sizeof(*idp), M_TEMP, M_WAITOK); 440 idp->saveent.d_namlen = idp->assocent.d_namlen = 0; 441 /* 442 * XXX 443 * Is it worth trying to figure out the type? 444 */ 445 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type = 446 DT_UNKNOWN; 447 idp->uio = uio; 448 if (ap->a_ncookies == NULL) { 449 idp->cookies = NULL; 450 } else { 451 /* 452 * Guess the number of cookies needed. 453 */ 454 ncookies = uio->uio_resid / 16; 455 cookies = malloc(ncookies * sizeof(*cookies), M_TEMP, M_WAITOK); 456 idp->cookies = cookies; 457 idp->ncookies = ncookies; 458 } 459 idp->eofflag = 1; 460 idp->curroff = uio->uio_offset; 461 idp->uio_off = uio->uio_offset; 462 463 if ((entryoffsetinblock = idp->curroff & bmask) && 464 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) { 465 free(idp, M_TEMP); 466 return (error); 467 } 468 endsearch = dp->i_size; 469 470 while (idp->curroff < endsearch) { 471 /* 472 * If offset is on a block boundary, 473 * read the next directory block. 474 * Release previous if it exists. 475 */ 476 if ((idp->curroff & bmask) == 0) { 477 if (bp != NULL) 478 brelse(bp); 479 if ((error = 480 cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp)) != 0) 481 break; 482 entryoffsetinblock = 0; 483 } 484 /* 485 * Get pointer to next entry. 486 */ 487 ep = (struct iso_directory_record *) 488 ((char *)bp->b_data + entryoffsetinblock); 489 490 reclen = isonum_711(ep->length); 491 if (reclen == 0) { 492 /* skip to next block, if any */ 493 idp->curroff = 494 (idp->curroff & ~bmask) + imp->logical_block_size; 495 continue; 496 } 497 498 if (reclen < ISO_DIRECTORY_RECORD_SIZE) { 499 error = EINVAL; 500 /* illegal entry, stop */ 501 break; 502 } 503 504 if (entryoffsetinblock + reclen > imp->logical_block_size) { 505 error = EINVAL; 506 /* illegal directory, so stop looking */ 507 break; 508 } 509 510 idp->current.d_namlen = isonum_711(ep->name_len); 511 512 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) { 513 error = EINVAL; 514 /* illegal entry, stop */ 515 break; 516 } 517 518 if (isonum_711(ep->flags)&2) 519 idp->current.d_fileno = isodirino(ep, imp); 520 else 521 idp->current.d_fileno = dbtob(bp->b_blkno) + 522 entryoffsetinblock; 523 524 idp->curroff += reclen; 525 /* NOTE: d_off is the offset of *next* entry. */ 526 idp->current.d_off = idp->curroff; 527 528 switch (imp->iso_ftype) { 529 case ISO_FTYPE_RRIP: 530 ino = idp->current.d_fileno; 531 cd9660_rrip_getname(ep, idp->current.d_name, &namelen, 532 &ino, imp); 533 idp->current.d_fileno = ino; 534 idp->current.d_namlen = (u_char)namelen; 535 if (idp->current.d_namlen) 536 error = iso_uiodir(idp,&idp->current,idp->curroff); 537 break; 538 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/ 539 strcpy(idp->current.d_name,".."); 540 if (idp->current.d_namlen == 1 && ep->name[0] == 0) { 541 idp->current.d_namlen = 1; 542 error = iso_uiodir(idp,&idp->current,idp->curroff); 543 } else if (idp->current.d_namlen == 1 && ep->name[0] == 1) { 544 idp->current.d_namlen = 2; 545 error = iso_uiodir(idp,&idp->current,idp->curroff); 546 } else { 547 isofntrans(ep->name,idp->current.d_namlen, 548 idp->current.d_name, &namelen, 549 imp->iso_ftype == ISO_FTYPE_9660, 550 isonum_711(ep->flags)&4, 551 imp->joliet_level, 552 imp->im_flags, 553 imp->im_d2l); 554 idp->current.d_namlen = (u_char)namelen; 555 if (imp->iso_ftype == ISO_FTYPE_DEFAULT) 556 error = iso_shipdir(idp); 557 else 558 error = iso_uiodir(idp,&idp->current,idp->curroff); 559 } 560 } 561 if (error) 562 break; 563 564 entryoffsetinblock += reclen; 565 } 566 567 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { 568 idp->current.d_namlen = 0; 569 error = iso_shipdir(idp); 570 } 571 if (error < 0) 572 error = 0; 573 574 if (ap->a_ncookies != NULL) { 575 if (error) 576 free(cookies, M_TEMP); 577 else { 578 /* 579 * Work out the number of cookies actually used. 580 */ 581 *ap->a_ncookies = ncookies - idp->ncookies; 582 *ap->a_cookies = cookies; 583 } 584 } 585 586 if (bp) 587 brelse (bp); 588 589 uio->uio_offset = idp->uio_off; 590 *ap->a_eofflag = idp->eofflag; 591 592 free(idp, M_TEMP); 593 594 return (error); 595 } 596 597 /* 598 * Return target name of a symbolic link 599 * Shouldn't we get the parent vnode and read the data from there? 600 * This could eventually result in deadlocks in cd9660_lookup. 601 * But otherwise the block read here is in the block buffer two times. 602 */ 603 typedef struct iso_directory_record ISODIR; 604 typedef struct iso_node ISONODE; 605 typedef struct iso_mnt ISOMNT; 606 static int 607 cd9660_readlink(struct vop_readlink_args *ap) 608 { 609 ISONODE *ip; 610 ISODIR *dirp; 611 ISOMNT *imp; 612 struct buf *bp; 613 struct uio *uio; 614 u_short symlen; 615 int error; 616 char *symname; 617 618 ip = VTOI(ap->a_vp); 619 imp = ip->i_mnt; 620 uio = ap->a_uio; 621 622 if (imp->iso_ftype != ISO_FTYPE_RRIP) 623 return (EINVAL); 624 625 /* 626 * Get parents directory record block that this inode included. 627 */ 628 error = bread(imp->im_devvp, 629 (ip->i_number >> imp->im_bshift) << 630 (imp->im_bshift - DEV_BSHIFT), 631 imp->logical_block_size, NOCRED, &bp); 632 if (error) { 633 return (EINVAL); 634 } 635 636 /* 637 * Setup the directory pointer for this inode 638 */ 639 dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask)); 640 641 /* 642 * Just make sure, we have a right one.... 643 * 1: Check not cross boundary on block 644 */ 645 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) 646 > (unsigned)imp->logical_block_size) { 647 brelse(bp); 648 return (EINVAL); 649 } 650 651 /* 652 * Now get a buffer 653 * Abuse a namei buffer for now. 654 */ 655 if (uio->uio_segflg == UIO_SYSSPACE) 656 symname = uio->uio_iov->iov_base; 657 else 658 symname = uma_zalloc(namei_zone, M_WAITOK); 659 660 /* 661 * Ok, we just gathering a symbolic name in SL record. 662 */ 663 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { 664 if (uio->uio_segflg != UIO_SYSSPACE) 665 uma_zfree(namei_zone, symname); 666 brelse(bp); 667 return (EINVAL); 668 } 669 /* 670 * Don't forget before you leave from home ;-) 671 */ 672 brelse(bp); 673 674 /* 675 * return with the symbolic name to caller's. 676 */ 677 if (uio->uio_segflg != UIO_SYSSPACE) { 678 error = uiomove(symname, symlen, uio); 679 uma_zfree(namei_zone, symname); 680 return (error); 681 } 682 uio->uio_resid -= symlen; 683 uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen; 684 uio->uio_iov->iov_len -= symlen; 685 return (0); 686 } 687 688 /* 689 * Calculate the logical to physical mapping if not done already, 690 * then call the device strategy routine. 691 */ 692 static int 693 cd9660_strategy(struct vop_strategy_args *ap) 694 { 695 struct buf *bp = ap->a_bp; 696 struct vnode *vp = ap->a_vp; 697 struct iso_node *ip; 698 struct bufobj *bo; 699 700 ip = VTOI(vp); 701 if (vp->v_type == VBLK || vp->v_type == VCHR) 702 panic("cd9660_strategy: spec"); 703 if (bp->b_blkno == bp->b_lblkno) { 704 bp->b_blkno = (ip->iso_start + bp->b_lblkno) << 705 (ip->i_mnt->im_bshift - DEV_BSHIFT); 706 } 707 bp->b_iooffset = dbtob(bp->b_blkno); 708 bo = ip->i_mnt->im_bo; 709 BO_STRATEGY(bo, bp); 710 return (0); 711 } 712 713 /* 714 * Return POSIX pathconf information applicable to cd9660 filesystems. 715 */ 716 static int 717 cd9660_pathconf(struct vop_pathconf_args *ap) 718 { 719 720 switch (ap->a_name) { 721 case _PC_FILESIZEBITS: 722 *ap->a_retval = 32; 723 return (0); 724 case _PC_LINK_MAX: 725 *ap->a_retval = 1; 726 return (0); 727 case _PC_NAME_MAX: 728 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) 729 *ap->a_retval = NAME_MAX; 730 else 731 *ap->a_retval = 37; 732 return (0); 733 case _PC_SYMLINK_MAX: 734 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) { 735 *ap->a_retval = MAXPATHLEN; 736 return (0); 737 } 738 return (EINVAL); 739 case _PC_NO_TRUNC: 740 *ap->a_retval = 1; 741 return (0); 742 default: 743 return (vop_stdpathconf(ap)); 744 } 745 /* NOTREACHED */ 746 } 747 748 /* 749 * Vnode pointer to File handle 750 */ 751 static int 752 cd9660_vptofh(struct vop_vptofh_args *ap) 753 { 754 struct ifid ifh; 755 struct iso_node *ip = VTOI(ap->a_vp); 756 757 ifh.ifid_len = sizeof(struct ifid); 758 759 ifh.ifid_ino = ip->i_number; 760 ifh.ifid_start = ip->iso_start; 761 /* 762 * This intentionally uses sizeof(ifh) in order to not copy stack 763 * garbage on ILP32. 764 */ 765 memcpy(ap->a_fhp, &ifh, sizeof(ifh)); 766 767 #ifdef ISOFS_DBG 768 printf("vptofh: ino %jd, start %ld\n", 769 (uintmax_t)ifh.ifid_ino, ifh.ifid_start); 770 #endif 771 772 return (0); 773 } 774 775 SYSCTL_NODE(_vfs, OID_AUTO, cd9660, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 776 "cd9660 filesystem"); 777 static int use_buf_pager = 1; 778 SYSCTL_INT(_vfs_cd9660, OID_AUTO, use_buf_pager, CTLFLAG_RWTUN, 779 &use_buf_pager, 0, 780 "Use buffer pager instead of bmap"); 781 782 static daddr_t 783 cd9660_gbp_getblkno(struct vnode *vp, vm_ooffset_t off) 784 { 785 786 return (lblkno(VTOI(vp)->i_mnt, off)); 787 } 788 789 static int 790 cd9660_gbp_getblksz(struct vnode *vp, daddr_t lbn, long *sz) 791 { 792 struct iso_node *ip; 793 794 ip = VTOI(vp); 795 *sz = blksize(ip->i_mnt, ip, lbn); 796 return (0); 797 } 798 799 static int 800 cd9660_getpages(struct vop_getpages_args *ap) 801 { 802 struct vnode *vp; 803 804 vp = ap->a_vp; 805 if (vp->v_type == VCHR || vp->v_type == VBLK) 806 return (EOPNOTSUPP); 807 808 if (use_buf_pager) 809 return (vfs_bio_getpages(vp, ap->a_m, ap->a_count, 810 ap->a_rbehind, ap->a_rahead, cd9660_gbp_getblkno, 811 cd9660_gbp_getblksz)); 812 return (vnode_pager_generic_getpages(vp, ap->a_m, ap->a_count, 813 ap->a_rbehind, ap->a_rahead, NULL, NULL)); 814 } 815 816 /* 817 * Global vfs data structures for cd9660 818 */ 819 struct vop_vector cd9660_vnodeops = { 820 .vop_default = &default_vnodeops, 821 .vop_open = cd9660_open, 822 .vop_access = cd9660_access, 823 .vop_bmap = cd9660_bmap, 824 .vop_cachedlookup = cd9660_lookup, 825 .vop_getattr = cd9660_getattr, 826 .vop_inactive = cd9660_inactive, 827 .vop_ioctl = cd9660_ioctl, 828 .vop_lookup = vfs_cache_lookup, 829 .vop_pathconf = cd9660_pathconf, 830 .vop_read = cd9660_read, 831 .vop_readdir = cd9660_readdir, 832 .vop_readlink = cd9660_readlink, 833 .vop_reclaim = cd9660_reclaim, 834 .vop_setattr = cd9660_setattr, 835 .vop_strategy = cd9660_strategy, 836 .vop_vptofh = cd9660_vptofh, 837 .vop_getpages = cd9660_getpages, 838 }; 839 VFS_VOP_VECTOR_REGISTER(cd9660_vnodeops); 840 841 /* 842 * Special device vnode ops 843 */ 844 845 struct vop_vector cd9660_fifoops = { 846 .vop_default = &fifo_specops, 847 .vop_access = cd9660_access, 848 .vop_getattr = cd9660_getattr, 849 .vop_inactive = cd9660_inactive, 850 .vop_reclaim = cd9660_reclaim, 851 .vop_setattr = cd9660_setattr, 852 .vop_vptofh = cd9660_vptofh, 853 }; 854 VFS_VOP_VECTOR_REGISTER(cd9660_fifoops); 855