cd9660_vnops.c revision 1.26.2.5
1 /* $NetBSD: cd9660_vnops.c,v 1.26.2.5 2007/10/24 16:23:21 ad Exp $ */ 2 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 (at) blitz.com). The Rock Ridge Extension 9 * Support code is derived from software contributed to Berkeley 10 * by Atsushi Murai (amurai (at) 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 8.15 (Berkeley) 5/27/95 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: cd9660_vnops.c,v 1.26.2.5 2007/10/24 16:23:21 ad Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/namei.h> 45 #include <sys/resourcevar.h> 46 #include <sys/kernel.h> 47 #include <sys/file.h> 48 #include <sys/stat.h> 49 #include <sys/buf.h> 50 #include <sys/proc.h> 51 #include <sys/mount.h> 52 #include <sys/vnode.h> 53 #include <sys/malloc.h> 54 #include <sys/dirent.h> 55 #include <sys/kauth.h> 56 57 #include <miscfs/fifofs/fifo.h> 58 #include <miscfs/genfs/genfs.h> 59 #include <miscfs/specfs/specdev.h> 60 61 #include <fs/cd9660/iso.h> 62 #include <fs/cd9660/cd9660_extern.h> 63 #include <fs/cd9660/cd9660_node.h> 64 #include <fs/cd9660/iso_rrip.h> 65 #include <fs/cd9660/cd9660_mount.h> 66 67 /* 68 * Structure for reading directories 69 */ 70 struct isoreaddir { 71 struct dirent saveent; 72 struct dirent assocent; 73 struct dirent current; 74 off_t saveoff; 75 off_t assocoff; 76 off_t curroff; 77 struct uio *uio; 78 off_t uio_off; 79 int eofflag; 80 off_t *cookies; 81 int ncookies; 82 }; 83 84 int iso_uiodir(struct isoreaddir *, struct dirent *, off_t); 85 int iso_shipdir(struct isoreaddir *); 86 87 /* 88 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. 89 * The mode is shifted to select the owner/group/other fields. The 90 * super user is granted all permissions. 91 */ 92 int 93 cd9660_access(v) 94 void *v; 95 { 96 struct vop_access_args /* { 97 struct vnode *a_vp; 98 int a_mode; 99 kauth_cred_t a_cred; 100 struct lwp *a_l; 101 } */ *ap = v; 102 struct vnode *vp = ap->a_vp; 103 struct iso_node *ip = VTOI(vp); 104 105 /* 106 * Disallow write attempts unless the file is a socket, 107 * fifo, or a block or character device resident on the 108 * file system. 109 */ 110 if (ap->a_mode & VWRITE) { 111 switch (vp->v_type) { 112 case VDIR: 113 case VLNK: 114 case VREG: 115 return (EROFS); 116 default: 117 break; 118 } 119 } 120 121 return (vaccess(vp->v_type, ip->inode.iso_mode & ALLPERMS, 122 ip->inode.iso_uid, ip->inode.iso_gid, ap->a_mode, ap->a_cred)); 123 } 124 125 int 126 cd9660_getattr(v) 127 void *v; 128 { 129 struct vop_getattr_args /* { 130 struct vnode *a_vp; 131 struct vattr *a_vap; 132 kauth_cred_t a_cred; 133 struct lwp *a_l; 134 } */ *ap = v; 135 struct vnode *vp = ap->a_vp; 136 struct iso_node *ip = VTOI(vp); 137 struct vattr *vap = ap->a_vap; 138 139 vap->va_fsid = ip->i_dev; 140 vap->va_fileid = ip->i_number; 141 142 vap->va_mode = ip->inode.iso_mode & ALLPERMS; 143 vap->va_nlink = ip->inode.iso_links; 144 vap->va_uid = ip->inode.iso_uid; 145 vap->va_gid = ip->inode.iso_gid; 146 vap->va_atime = ip->inode.iso_atime; 147 vap->va_mtime = ip->inode.iso_mtime; 148 vap->va_ctime = ip->inode.iso_ctime; 149 vap->va_rdev = ip->inode.iso_rdev; 150 151 vap->va_size = (u_quad_t) ip->i_size; 152 if (ip->i_size == 0 && vp->v_type == VLNK) { 153 struct vop_readlink_args rdlnk; 154 struct iovec aiov; 155 struct uio auio; 156 char *cp; 157 158 MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK); 159 aiov.iov_base = cp; 160 aiov.iov_len = MAXPATHLEN; 161 auio.uio_iov = &aiov; 162 auio.uio_iovcnt = 1; 163 auio.uio_offset = 0; 164 auio.uio_rw = UIO_READ; 165 auio.uio_resid = MAXPATHLEN; 166 UIO_SETUP_SYSSPACE(&auio); 167 rdlnk.a_uio = &auio; 168 rdlnk.a_vp = ap->a_vp; 169 rdlnk.a_cred = ap->a_cred; 170 if (cd9660_readlink(&rdlnk) == 0) 171 vap->va_size = MAXPATHLEN - auio.uio_resid; 172 FREE(cp, M_TEMP); 173 } 174 vap->va_flags = 0; 175 vap->va_gen = 1; 176 vap->va_blocksize = ip->i_mnt->logical_block_size; 177 vap->va_bytes = (u_quad_t) ip->i_size; 178 vap->va_type = vp->v_type; 179 return (0); 180 } 181 182 /* 183 * Vnode op for reading. 184 */ 185 int 186 cd9660_read(v) 187 void *v; 188 { 189 struct vop_read_args /* { 190 struct vnode *a_vp; 191 struct uio *a_uio; 192 int a_ioflag; 193 kauth_cred_t a_cred; 194 } */ *ap = v; 195 struct vnode *vp = ap->a_vp; 196 struct uio *uio = ap->a_uio; 197 struct iso_node *ip = VTOI(vp); 198 struct iso_mnt *imp; 199 struct buf *bp; 200 daddr_t lbn, rablock; 201 off_t diff; 202 int rasize, error = 0; 203 long size, n, on; 204 205 if (uio->uio_resid == 0) 206 return (0); 207 if (uio->uio_offset < 0) 208 return (EINVAL); 209 if (uio->uio_offset >= ip->i_size) 210 return 0; 211 ip->i_flag |= IN_ACCESS; 212 imp = ip->i_mnt; 213 214 if (vp->v_type == VREG) { 215 const int advice = IO_ADV_DECODE(ap->a_ioflag); 216 error = 0; 217 218 while (uio->uio_resid > 0) { 219 void *win; 220 int flags; 221 vsize_t bytelen = MIN(ip->i_size - uio->uio_offset, 222 uio->uio_resid); 223 224 if (bytelen == 0) 225 break; 226 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 227 &bytelen, advice, UBC_READ); 228 error = uiomove(win, bytelen, uio); 229 flags = UBC_WANT_UNMAP(vp) ? UBC_UNMAP : 0; 230 ubc_release(win, flags); 231 if (error) 232 break; 233 } 234 goto out; 235 } 236 237 do { 238 lbn = lblkno(imp, uio->uio_offset); 239 on = blkoff(imp, uio->uio_offset); 240 n = MIN(imp->logical_block_size - on, uio->uio_resid); 241 diff = (off_t)ip->i_size - uio->uio_offset; 242 if (diff <= 0) 243 return (0); 244 if (diff < n) 245 n = diff; 246 size = blksize(imp, ip, lbn); 247 rablock = lbn + 1; 248 if (lblktosize(imp, rablock) < ip->i_size) { 249 rasize = blksize(imp, ip, rablock); 250 error = breadn(vp, lbn, size, &rablock, 251 &rasize, 1, NOCRED, &bp); 252 } else { 253 error = bread(vp, lbn, size, NOCRED, &bp); 254 } 255 n = MIN(n, size - bp->b_resid); 256 if (error) { 257 brelse(bp, 0); 258 return (error); 259 } 260 261 error = uiomove((char *)bp->b_data + on, (int)n, uio); 262 brelse(bp, 0); 263 } while (error == 0 && uio->uio_resid > 0 && n != 0); 264 265 out: 266 return (error); 267 } 268 269 int 270 iso_uiodir(idp, dp, off) 271 struct isoreaddir *idp; 272 struct dirent *dp; 273 off_t off; 274 { 275 int error; 276 277 dp->d_name[dp->d_namlen] = 0; 278 dp->d_reclen = _DIRENT_SIZE(dp); 279 280 if (idp->uio->uio_resid < dp->d_reclen) { 281 idp->eofflag = 0; 282 return (-1); 283 } 284 285 if (idp->cookies) { 286 if (idp->ncookies <= 0) { 287 idp->eofflag = 0; 288 return (-1); 289 } 290 291 *idp->cookies++ = off; 292 --idp->ncookies; 293 } 294 295 if ((error = uiomove(dp, dp->d_reclen, idp->uio)) != 0) 296 return (error); 297 idp->uio_off = off; 298 return (0); 299 } 300 301 int 302 iso_shipdir(idp) 303 struct isoreaddir *idp; 304 { 305 struct dirent *dp; 306 int cl, sl, assoc; 307 int error; 308 char *cname, *sname; 309 310 cl = idp->current.d_namlen; 311 cname = idp->current.d_name; 312 313 if ((assoc = cl > 1 && *cname == ASSOCCHAR)) { 314 cl--; 315 cname++; 316 } 317 318 dp = &idp->saveent; 319 sname = dp->d_name; 320 if (!(sl = dp->d_namlen)) { 321 dp = &idp->assocent; 322 sname = dp->d_name + 1; 323 sl = dp->d_namlen - 1; 324 } 325 if (sl > 0) { 326 if (sl != cl 327 || memcmp(sname, cname, sl)) { 328 if (idp->assocent.d_namlen) { 329 error = iso_uiodir(idp, &idp->assocent, 330 idp->assocoff); 331 if (error) 332 return (error); 333 idp->assocent.d_namlen = 0; 334 } 335 if (idp->saveent.d_namlen) { 336 error = iso_uiodir(idp, &idp->saveent, 337 idp->saveoff); 338 if (error) 339 return (error); 340 idp->saveent.d_namlen = 0; 341 } 342 } 343 } 344 idp->current.d_reclen = _DIRENT_SIZE(&idp->current); 345 if (assoc) { 346 idp->assocoff = idp->curroff; 347 memcpy(&idp->assocent, &idp->current, idp->current.d_reclen); 348 } else { 349 idp->saveoff = idp->curroff; 350 memcpy(&idp->saveent, &idp->current, idp->current.d_reclen); 351 } 352 return (0); 353 } 354 355 /* 356 * Vnode op for readdir 357 */ 358 int 359 cd9660_readdir(v) 360 void *v; 361 { 362 struct vop_readdir_args /* { 363 struct vnode *a_vp; 364 struct uio *a_uio; 365 kauth_cred_t a_cred; 366 int *a_eofflag; 367 off_t **a_cookies; 368 int *a_ncookies; 369 } */ *ap = v; 370 struct uio *uio = ap->a_uio; 371 struct isoreaddir *idp; 372 struct vnode *vdp = ap->a_vp; 373 struct iso_node *dp; 374 struct iso_mnt *imp; 375 struct buf *bp = NULL; 376 struct iso_directory_record *ep; 377 int entryoffsetinblock; 378 doff_t endsearch; 379 u_long bmask; 380 int error = 0; 381 int reclen; 382 u_short namelen; 383 off_t *cookies = NULL; 384 int ncookies = 0; 385 386 if (vdp->v_type != VDIR) 387 return (ENOTDIR); 388 389 dp = VTOI(vdp); 390 imp = dp->i_mnt; 391 bmask = imp->im_bmask; 392 393 MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK); 394 idp->saveent.d_namlen = idp->assocent.d_namlen = 0; 395 /* 396 * XXX 397 * Is it worth trying to figure out the type? 398 */ 399 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type = 400 DT_UNKNOWN; 401 idp->uio = uio; 402 if (ap->a_ncookies == NULL) 403 idp->cookies = NULL; 404 else { 405 ncookies = uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 406 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 407 idp->cookies = cookies; 408 idp->ncookies = ncookies; 409 } 410 idp->eofflag = 1; 411 idp->curroff = uio->uio_offset; 412 413 if ((entryoffsetinblock = idp->curroff & bmask) && 414 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) { 415 FREE(idp, M_TEMP); 416 return (error); 417 } 418 endsearch = dp->i_size; 419 420 while (idp->curroff < endsearch) { 421 /* 422 * If offset is on a block boundary, 423 * read the next directory block. 424 * Release previous if it exists. 425 */ 426 if ((idp->curroff & bmask) == 0) { 427 if (bp != NULL) 428 brelse(bp, 0); 429 error = cd9660_blkatoff(vdp, (off_t)idp->curroff, 430 NULL, &bp); 431 if (error) 432 break; 433 entryoffsetinblock = 0; 434 } 435 /* 436 * Get pointer to next entry. 437 */ 438 KASSERT(bp != NULL); 439 ep = (struct iso_directory_record *) 440 ((char *)bp->b_data + entryoffsetinblock); 441 442 reclen = isonum_711(ep->length); 443 if (reclen == 0) { 444 /* skip to next block, if any */ 445 idp->curroff = 446 (idp->curroff & ~bmask) + imp->logical_block_size; 447 continue; 448 } 449 450 if (reclen < ISO_DIRECTORY_RECORD_SIZE) { 451 error = EINVAL; 452 /* illegal entry, stop */ 453 break; 454 } 455 456 if (entryoffsetinblock + reclen > imp->logical_block_size) { 457 error = EINVAL; 458 /* illegal directory, so stop looking */ 459 break; 460 } 461 462 idp->current.d_namlen = isonum_711(ep->name_len); 463 464 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) { 465 error = EINVAL; 466 /* illegal entry, stop */ 467 break; 468 } 469 470 if (isonum_711(ep->flags)&2) 471 idp->current.d_fileno = isodirino(ep, imp); 472 else 473 idp->current.d_fileno = dbtob(bp->b_blkno) + 474 entryoffsetinblock; 475 476 idp->curroff += reclen; 477 478 switch (imp->iso_ftype) { 479 case ISO_FTYPE_RRIP: 480 cd9660_rrip_getname(ep, idp->current.d_name, &namelen, 481 &idp->current.d_fileno, imp); 482 idp->current.d_namlen = (u_char)namelen; 483 if (idp->current.d_namlen) 484 error = iso_uiodir(idp, &idp->current, 485 idp->curroff); 486 break; 487 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 */ 488 isofntrans(ep->name, idp->current.d_namlen, 489 idp->current.d_name, &namelen, 490 imp->iso_ftype == ISO_FTYPE_9660, 491 (imp->im_flags & ISOFSMNT_NOCASETRANS) == 0, 492 isonum_711(ep->flags)&4, 493 imp->im_joliet_level); 494 switch (idp->current.d_name[0]) { 495 case 0: 496 idp->current.d_name[0] = '.'; 497 idp->current.d_namlen = 1; 498 error = iso_uiodir(idp, &idp->current, 499 idp->curroff); 500 break; 501 case 1: 502 strlcpy(idp->current.d_name, "..", 503 sizeof(idp->current.d_name)); 504 idp->current.d_namlen = 2; 505 error = iso_uiodir(idp, &idp->current, 506 idp->curroff); 507 break; 508 default: 509 idp->current.d_namlen = (u_char)namelen; 510 if (imp->iso_ftype == ISO_FTYPE_DEFAULT) 511 error = iso_shipdir(idp); 512 else 513 error = iso_uiodir(idp, &idp->current, 514 idp->curroff); 515 break; 516 } 517 } 518 if (error) 519 break; 520 521 entryoffsetinblock += reclen; 522 } 523 524 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { 525 idp->current.d_namlen = 0; 526 error = iso_shipdir(idp); 527 } 528 if (error < 0) 529 error = 0; 530 531 if (ap->a_ncookies != NULL) { 532 if (error) 533 free(cookies, M_TEMP); 534 else { 535 /* 536 * Work out the number of cookies actually used. 537 */ 538 *ap->a_ncookies = ncookies - idp->ncookies; 539 *ap->a_cookies = cookies; 540 } 541 } 542 543 if (bp) 544 brelse(bp, 0); 545 546 uio->uio_offset = idp->uio_off; 547 *ap->a_eofflag = idp->eofflag; 548 549 FREE(idp, M_TEMP); 550 551 return (error); 552 } 553 554 /* 555 * Return target name of a symbolic link 556 * Shouldn't we get the parent vnode and read the data from there? 557 * This could eventually result in deadlocks in cd9660_lookup. 558 * But otherwise the block read here is in the block buffer two times. 559 */ 560 typedef struct iso_directory_record ISODIR; 561 typedef struct iso_node ISONODE; 562 typedef struct iso_mnt ISOMNT; 563 int 564 cd9660_readlink(v) 565 void *v; 566 { 567 struct vop_readlink_args /* { 568 struct vnode *a_vp; 569 struct uio *a_uio; 570 kauth_cred_t a_cred; 571 } */ *ap = v; 572 ISONODE *ip; 573 ISODIR *dirp; 574 ISOMNT *imp; 575 struct buf *bp; 576 struct uio *uio; 577 u_short symlen; 578 int error; 579 char *symname; 580 bool use_pnbuf; 581 582 ip = VTOI(ap->a_vp); 583 imp = ip->i_mnt; 584 uio = ap->a_uio; 585 586 if (imp->iso_ftype != ISO_FTYPE_RRIP) 587 return (EINVAL); 588 589 /* 590 * Get parents directory record block that this inode included. 591 */ 592 error = bread(imp->im_devvp, 593 (ip->i_number >> imp->im_bshift) << 594 (imp->im_bshift - DEV_BSHIFT), 595 imp->logical_block_size, NOCRED, &bp); 596 if (error) { 597 brelse(bp, 0); 598 return (EINVAL); 599 } 600 601 /* 602 * Setup the directory pointer for this inode 603 */ 604 dirp = (ISODIR *)((char *)bp->b_data + (ip->i_number & imp->im_bmask)); 605 606 /* 607 * Just make sure, we have a right one.... 608 * 1: Check not cross boundary on block 609 */ 610 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) 611 > imp->logical_block_size) { 612 brelse(bp, 0); 613 return (EINVAL); 614 } 615 616 /* 617 * Now get a buffer 618 * Abuse a namei buffer for now. 619 */ 620 use_pnbuf = !VMSPACE_IS_KERNEL_P(uio->uio_vmspace) || 621 uio->uio_iov->iov_len < MAXPATHLEN; 622 if (use_pnbuf) { 623 symname = PNBUF_GET(); 624 } else { 625 symname = uio->uio_iov->iov_base; 626 } 627 628 /* 629 * Ok, we just gathering a symbolic name in SL record. 630 */ 631 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { 632 if (use_pnbuf) { 633 PNBUF_PUT(symname); 634 } 635 brelse(bp, 0); 636 return (EINVAL); 637 } 638 /* 639 * Don't forget before you leave from home ;-) 640 */ 641 brelse(bp, 0); 642 643 /* 644 * return with the symbolic name to caller's. 645 */ 646 if (use_pnbuf) { 647 error = uiomove(symname, symlen, uio); 648 PNBUF_PUT(symname); 649 return (error); 650 } 651 uio->uio_resid -= symlen; 652 uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen; 653 uio->uio_iov->iov_len -= symlen; 654 return (0); 655 } 656 657 int 658 cd9660_link(v) 659 void *v; 660 { 661 struct vop_link_args /* { 662 struct vnode *a_dvp; 663 struct vnode *a_vp; 664 struct componentname *a_cnp; 665 } */ *ap = v; 666 667 VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 668 vput(ap->a_dvp); 669 return (EROFS); 670 } 671 672 int 673 cd9660_symlink(v) 674 void *v; 675 { 676 struct vop_symlink_args /* { 677 struct vnode *a_dvp; 678 struct vnode **a_vpp; 679 struct componentname *a_cnp; 680 struct vattr *a_vap; 681 char *a_target; 682 } */ *ap = v; 683 684 VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 685 vput(ap->a_dvp); 686 return (EROFS); 687 } 688 689 /* 690 * Calculate the logical to physical mapping if not done already, 691 * then call the device strategy routine. 692 */ 693 int 694 cd9660_strategy(v) 695 void *v; 696 { 697 struct vop_strategy_args /* { 698 struct vnode *a_vp; 699 struct buf *a_bp; 700 } */ *ap = v; 701 struct buf *bp = ap->a_bp; 702 struct vnode *vp = ap->a_vp; 703 struct iso_node *ip; 704 int error; 705 706 ip = VTOI(vp); 707 if (vp->v_type == VBLK || vp->v_type == VCHR) 708 panic("cd9660_strategy: spec"); 709 if (bp->b_blkno == bp->b_lblkno) { 710 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL); 711 if (error) { 712 bp->b_error = error; 713 biodone(bp); 714 return (error); 715 } 716 if ((long)bp->b_blkno == -1) 717 clrbuf(bp); 718 } 719 if ((long)bp->b_blkno == -1) { 720 biodone(bp); 721 return (0); 722 } 723 vp = ip->i_devvp; 724 return (VOP_STRATEGY(vp, bp)); 725 } 726 727 /* 728 * Print out the contents of an inode. 729 */ 730 /*ARGSUSED*/ 731 int 732 cd9660_print(void *v) 733 { 734 735 printf("tag VT_ISOFS, isofs vnode\n"); 736 return (0); 737 } 738 739 /* 740 * Return POSIX pathconf information applicable to cd9660 filesystems. 741 */ 742 int 743 cd9660_pathconf(v) 744 void *v; 745 { 746 struct vop_pathconf_args /* { 747 struct vnode *a_vp; 748 int a_name; 749 register_t *a_retval; 750 } */ *ap = v; 751 switch (ap->a_name) { 752 case _PC_LINK_MAX: 753 *ap->a_retval = 1; 754 return (0); 755 case _PC_NAME_MAX: 756 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) 757 *ap->a_retval = NAME_MAX; 758 else 759 *ap->a_retval = 37; 760 return (0); 761 case _PC_PATH_MAX: 762 *ap->a_retval = PATH_MAX; 763 return (0); 764 case _PC_PIPE_BUF: 765 *ap->a_retval = PIPE_BUF; 766 return (0); 767 case _PC_CHOWN_RESTRICTED: 768 *ap->a_retval = 1; 769 return (0); 770 case _PC_NO_TRUNC: 771 *ap->a_retval = 1; 772 return (0); 773 case _PC_SYNC_IO: 774 *ap->a_retval = 1; 775 return (0); 776 case _PC_FILESIZEBITS: 777 *ap->a_retval = 32; 778 return (0); 779 default: 780 return (EINVAL); 781 } 782 /* NOTREACHED */ 783 } 784 785 /* 786 * Allow changing the size for special files (and fifos). 787 */ 788 int 789 cd9660_setattr(v) 790 void *v; 791 { 792 struct vop_setattr_args /* { 793 struct vnodeop_desc *a_desc; 794 struct vnode *a_vp; 795 struct vattr *a_vap; 796 kauth_cred_t a_cred; 797 struct proc *a_p; 798 } */ *ap = v; 799 struct vattr *vap = ap->a_vap; 800 struct vnode *vp = ap->a_vp; 801 802 /* 803 * Only size is changeable. 804 */ 805 if (vap->va_type != VNON 806 || vap->va_nlink != (nlink_t)VNOVAL 807 || vap->va_fsid != VNOVAL 808 || vap->va_fileid != VNOVAL 809 || vap->va_blocksize != VNOVAL 810 || vap->va_rdev != (dev_t)VNOVAL 811 || (int)vap->va_bytes != VNOVAL 812 || vap->va_gen != VNOVAL 813 || vap->va_flags != VNOVAL 814 || vap->va_uid != (uid_t)VNOVAL 815 || vap->va_gid != (gid_t)VNOVAL 816 || vap->va_atime.tv_sec != VNOVAL 817 || vap->va_mtime.tv_sec != VNOVAL 818 || vap->va_mode != (mode_t)VNOVAL) 819 return EOPNOTSUPP; 820 821 if (vap->va_size != VNOVAL 822 && vp->v_type != VCHR 823 && vp->v_type != VBLK 824 && vp->v_type != VFIFO) 825 return EOPNOTSUPP; 826 827 return 0; 828 } 829 830 /* 831 * Global vfs data structures for isofs 832 */ 833 #define cd9660_create genfs_eopnotsupp 834 #define cd9660_mknod genfs_eopnotsupp 835 #define cd9660_write genfs_eopnotsupp 836 #define cd9660_lease_check genfs_lease_check 837 #define cd9660_fsync genfs_nullop 838 #define cd9660_remove genfs_eopnotsupp 839 #define cd9660_rename genfs_eopnotsupp 840 #define cd9660_mkdir genfs_eopnotsupp 841 #define cd9660_rmdir genfs_eopnotsupp 842 #define cd9660_advlock genfs_einval 843 #define cd9660_bwrite genfs_eopnotsupp 844 #define cd9660_revoke genfs_revoke 845 846 /* 847 * Global vfs data structures for cd9660 848 */ 849 int (**cd9660_vnodeop_p)(void *); 850 const struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = { 851 { &vop_default_desc, vn_default_error }, 852 { &vop_lookup_desc, cd9660_lookup }, /* lookup */ 853 { &vop_create_desc, cd9660_create }, /* create */ 854 { &vop_mknod_desc, cd9660_mknod }, /* mknod */ 855 { &vop_open_desc, cd9660_open }, /* open */ 856 { &vop_close_desc, cd9660_close }, /* close */ 857 { &vop_access_desc, cd9660_access }, /* access */ 858 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 859 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 860 { &vop_read_desc, cd9660_read }, /* read */ 861 { &vop_write_desc, cd9660_write }, /* write */ 862 { &vop_lease_desc, cd9660_lease_check }, /* lease */ 863 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 864 { &vop_ioctl_desc, cd9660_ioctl }, /* ioctl */ 865 { &vop_poll_desc, cd9660_poll }, /* poll */ 866 { &vop_revoke_desc, cd9660_revoke }, /* revoke */ 867 { &vop_mmap_desc, cd9660_mmap }, /* mmap */ 868 { &vop_fsync_desc, cd9660_fsync }, /* fsync */ 869 { &vop_seek_desc, cd9660_seek }, /* seek */ 870 { &vop_remove_desc, cd9660_remove }, /* remove */ 871 { &vop_link_desc, cd9660_link }, /* link */ 872 { &vop_rename_desc, cd9660_rename }, /* rename */ 873 { &vop_mkdir_desc, cd9660_mkdir }, /* mkdir */ 874 { &vop_rmdir_desc, cd9660_rmdir }, /* rmdir */ 875 { &vop_symlink_desc, cd9660_symlink }, /* symlink */ 876 { &vop_readdir_desc, cd9660_readdir }, /* readdir */ 877 { &vop_readlink_desc, cd9660_readlink }, /* readlink */ 878 { &vop_abortop_desc, cd9660_abortop }, /* abortop */ 879 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 880 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 881 { &vop_lock_desc, genfs_lock }, /* lock */ 882 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 883 { &vop_bmap_desc, cd9660_bmap }, /* bmap */ 884 { &vop_strategy_desc, cd9660_strategy }, /* strategy */ 885 { &vop_print_desc, cd9660_print }, /* print */ 886 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 887 { &vop_pathconf_desc, cd9660_pathconf }, /* pathconf */ 888 { &vop_advlock_desc, cd9660_advlock }, /* advlock */ 889 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 890 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 891 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 892 { NULL, NULL } 893 }; 894 const struct vnodeopv_desc cd9660_vnodeop_opv_desc = 895 { &cd9660_vnodeop_p, cd9660_vnodeop_entries }; 896 897 /* 898 * Special device vnode ops 899 */ 900 int (**cd9660_specop_p)(void *); 901 const struct vnodeopv_entry_desc cd9660_specop_entries[] = { 902 { &vop_default_desc, vn_default_error }, 903 { &vop_lookup_desc, spec_lookup }, /* lookup */ 904 { &vop_create_desc, spec_create }, /* create */ 905 { &vop_mknod_desc, spec_mknod }, /* mknod */ 906 { &vop_open_desc, spec_open }, /* open */ 907 { &vop_close_desc, spec_close }, /* close */ 908 { &vop_access_desc, cd9660_access }, /* access */ 909 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 910 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 911 { &vop_read_desc, spec_read }, /* read */ 912 { &vop_write_desc, spec_write }, /* write */ 913 { &vop_lease_desc, spec_lease_check }, /* lease */ 914 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 915 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 916 { &vop_poll_desc, spec_poll }, /* poll */ 917 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 918 { &vop_revoke_desc, spec_revoke }, /* revoke */ 919 { &vop_mmap_desc, spec_mmap }, /* mmap */ 920 { &vop_fsync_desc, spec_fsync }, /* fsync */ 921 { &vop_seek_desc, spec_seek }, /* seek */ 922 { &vop_remove_desc, spec_remove }, /* remove */ 923 { &vop_link_desc, spec_link }, /* link */ 924 { &vop_rename_desc, spec_rename }, /* rename */ 925 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 926 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 927 { &vop_symlink_desc, spec_symlink }, /* symlink */ 928 { &vop_readdir_desc, spec_readdir }, /* readdir */ 929 { &vop_readlink_desc, spec_readlink }, /* readlink */ 930 { &vop_abortop_desc, spec_abortop }, /* abortop */ 931 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 932 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 933 { &vop_lock_desc, genfs_lock }, /* lock */ 934 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 935 { &vop_bmap_desc, spec_bmap }, /* bmap */ 936 { &vop_strategy_desc, spec_strategy }, /* strategy */ 937 { &vop_print_desc, cd9660_print }, /* print */ 938 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 939 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 940 { &vop_advlock_desc, spec_advlock }, /* advlock */ 941 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 942 { &vop_getpages_desc, spec_getpages }, /* getpages */ 943 { &vop_putpages_desc, spec_putpages }, /* putpages */ 944 { NULL, NULL } 945 }; 946 const struct vnodeopv_desc cd9660_specop_opv_desc = 947 { &cd9660_specop_p, cd9660_specop_entries }; 948 949 int (**cd9660_fifoop_p)(void *); 950 const struct vnodeopv_entry_desc cd9660_fifoop_entries[] = { 951 { &vop_default_desc, vn_default_error }, 952 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 953 { &vop_create_desc, fifo_create }, /* create */ 954 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 955 { &vop_open_desc, fifo_open }, /* open */ 956 { &vop_close_desc, fifo_close }, /* close */ 957 { &vop_access_desc, cd9660_access }, /* access */ 958 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 959 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 960 { &vop_read_desc, fifo_read }, /* read */ 961 { &vop_write_desc, fifo_write }, /* write */ 962 { &vop_lease_desc, fifo_lease_check }, /* lease */ 963 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 964 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 965 { &vop_poll_desc, fifo_poll }, /* poll */ 966 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 967 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 968 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 969 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 970 { &vop_seek_desc, fifo_seek }, /* seek */ 971 { &vop_remove_desc, fifo_remove }, /* remove */ 972 { &vop_link_desc, fifo_link } , /* link */ 973 { &vop_rename_desc, fifo_rename }, /* rename */ 974 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 975 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 976 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 977 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 978 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 979 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 980 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 981 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 982 { &vop_lock_desc, genfs_lock }, /* lock */ 983 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 984 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 985 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 986 { &vop_print_desc, cd9660_print }, /* print */ 987 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 988 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 989 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 990 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 991 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 992 { NULL, NULL } 993 }; 994 const struct vnodeopv_desc cd9660_fifoop_opv_desc = 995 { &cd9660_fifoop_p, cd9660_fifoop_entries }; 996
Indexes created Sat Oct 25 16:10:12 GMT 2025