cd9660_vnops.c revision 1.36
1 /* $NetBSD: cd9660_vnops.c,v 1.36 2008/12/17 20:51:35 cegger 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 1.36 2008/12/17 20:51:35 cegger 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(void *v) 94 { 95 struct vop_access_args /* { 96 struct vnode *a_vp; 97 int a_mode; 98 kauth_cred_t a_cred; 99 } */ *ap = v; 100 struct vnode *vp = ap->a_vp; 101 struct iso_node *ip = VTOI(vp); 102 103 /* 104 * Disallow write attempts unless the file is a socket, 105 * fifo, or a block or character device resident on the 106 * file system. 107 */ 108 if (ap->a_mode & VWRITE) { 109 switch (vp->v_type) { 110 case VDIR: 111 case VLNK: 112 case VREG: 113 return (EROFS); 114 default: 115 break; 116 } 117 } 118 119 return (vaccess(vp->v_type, ip->inode.iso_mode & ALLPERMS, 120 ip->inode.iso_uid, ip->inode.iso_gid, ap->a_mode, ap->a_cred)); 121 } 122 123 int 124 cd9660_getattr(void *v) 125 { 126 struct vop_getattr_args /* { 127 struct vnode *a_vp; 128 struct vattr *a_vap; 129 kauth_cred_t a_cred; 130 } */ *ap = v; 131 struct vnode *vp = ap->a_vp; 132 struct iso_node *ip = VTOI(vp); 133 struct vattr *vap = ap->a_vap; 134 135 vap->va_fsid = ip->i_dev; 136 vap->va_fileid = ip->i_number; 137 138 vap->va_mode = ip->inode.iso_mode & ALLPERMS; 139 vap->va_nlink = ip->inode.iso_links; 140 vap->va_uid = ip->inode.iso_uid; 141 vap->va_gid = ip->inode.iso_gid; 142 vap->va_atime = ip->inode.iso_atime; 143 vap->va_mtime = ip->inode.iso_mtime; 144 vap->va_ctime = ip->inode.iso_ctime; 145 vap->va_rdev = ip->inode.iso_rdev; 146 147 vap->va_size = (u_quad_t) ip->i_size; 148 if (ip->i_size == 0 && vp->v_type == VLNK) { 149 struct vop_readlink_args rdlnk; 150 struct iovec aiov; 151 struct uio auio; 152 char *cp; 153 154 cp = (char *)malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 155 aiov.iov_base = cp; 156 aiov.iov_len = MAXPATHLEN; 157 auio.uio_iov = &aiov; 158 auio.uio_iovcnt = 1; 159 auio.uio_offset = 0; 160 auio.uio_rw = UIO_READ; 161 auio.uio_resid = MAXPATHLEN; 162 UIO_SETUP_SYSSPACE(&auio); 163 rdlnk.a_uio = &auio; 164 rdlnk.a_vp = ap->a_vp; 165 rdlnk.a_cred = ap->a_cred; 166 if (cd9660_readlink(&rdlnk) == 0) 167 vap->va_size = MAXPATHLEN - auio.uio_resid; 168 free(cp, M_TEMP); 169 } 170 vap->va_flags = 0; 171 vap->va_gen = 1; 172 vap->va_blocksize = ip->i_mnt->logical_block_size; 173 vap->va_bytes = (u_quad_t) ip->i_size; 174 vap->va_type = vp->v_type; 175 return (0); 176 } 177 178 /* 179 * Vnode op for reading. 180 */ 181 int 182 cd9660_read(void *v) 183 { 184 struct vop_read_args /* { 185 struct vnode *a_vp; 186 struct uio *a_uio; 187 int a_ioflag; 188 kauth_cred_t a_cred; 189 } */ *ap = v; 190 struct vnode *vp = ap->a_vp; 191 struct uio *uio = ap->a_uio; 192 struct iso_node *ip = VTOI(vp); 193 struct iso_mnt *imp; 194 struct buf *bp; 195 daddr_t lbn, rablock; 196 off_t diff; 197 int rasize, error = 0; 198 long size, n, on; 199 200 if (uio->uio_resid == 0) 201 return (0); 202 if (uio->uio_offset < 0) 203 return (EINVAL); 204 if (uio->uio_offset >= ip->i_size) 205 return 0; 206 ip->i_flag |= IN_ACCESS; 207 imp = ip->i_mnt; 208 209 if (vp->v_type == VREG) { 210 const int advice = IO_ADV_DECODE(ap->a_ioflag); 211 error = 0; 212 213 while (uio->uio_resid > 0) { 214 vsize_t bytelen = MIN(ip->i_size - uio->uio_offset, 215 uio->uio_resid); 216 217 if (bytelen == 0) 218 break; 219 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, advice, 220 UBC_READ | UBC_PARTIALOK | UBC_UNMAP_FLAG(vp)); 221 if (error) 222 break; 223 } 224 goto out; 225 } 226 227 do { 228 lbn = lblkno(imp, uio->uio_offset); 229 on = blkoff(imp, uio->uio_offset); 230 n = MIN(imp->logical_block_size - on, uio->uio_resid); 231 diff = (off_t)ip->i_size - uio->uio_offset; 232 if (diff <= 0) 233 return (0); 234 if (diff < n) 235 n = diff; 236 size = blksize(imp, ip, lbn); 237 rablock = lbn + 1; 238 if (lblktosize(imp, rablock) < ip->i_size) { 239 rasize = blksize(imp, ip, rablock); 240 error = breadn(vp, lbn, size, &rablock, 241 &rasize, 1, NOCRED, 0, &bp); 242 } else { 243 error = bread(vp, lbn, size, NOCRED, 0, &bp); 244 } 245 n = MIN(n, size - bp->b_resid); 246 if (error) { 247 brelse(bp, 0); 248 return (error); 249 } 250 251 error = uiomove((char *)bp->b_data + on, (int)n, uio); 252 brelse(bp, 0); 253 } while (error == 0 && uio->uio_resid > 0 && n != 0); 254 255 out: 256 return (error); 257 } 258 259 int 260 iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off) 261 { 262 int error; 263 264 dp->d_name[dp->d_namlen] = 0; 265 dp->d_reclen = _DIRENT_SIZE(dp); 266 267 if (idp->uio->uio_resid < dp->d_reclen) { 268 idp->eofflag = 0; 269 return (-1); 270 } 271 272 if (idp->cookies) { 273 if (idp->ncookies <= 0) { 274 idp->eofflag = 0; 275 return (-1); 276 } 277 278 *idp->cookies++ = off; 279 --idp->ncookies; 280 } 281 282 if ((error = uiomove(dp, dp->d_reclen, idp->uio)) != 0) 283 return (error); 284 idp->uio_off = off; 285 return (0); 286 } 287 288 int 289 iso_shipdir(struct isoreaddir *idp) 290 { 291 struct dirent *dp; 292 int cl, sl, assoc; 293 int error; 294 char *cname, *sname; 295 296 cl = idp->current.d_namlen; 297 cname = idp->current.d_name; 298 299 if ((assoc = cl > 1 && *cname == ASSOCCHAR)) { 300 cl--; 301 cname++; 302 } 303 304 dp = &idp->saveent; 305 sname = dp->d_name; 306 if (!(sl = dp->d_namlen)) { 307 dp = &idp->assocent; 308 sname = dp->d_name + 1; 309 sl = dp->d_namlen - 1; 310 } 311 if (sl > 0) { 312 if (sl != cl 313 || memcmp(sname, cname, sl)) { 314 if (idp->assocent.d_namlen) { 315 error = iso_uiodir(idp, &idp->assocent, 316 idp->assocoff); 317 if (error) 318 return (error); 319 idp->assocent.d_namlen = 0; 320 } 321 if (idp->saveent.d_namlen) { 322 error = iso_uiodir(idp, &idp->saveent, 323 idp->saveoff); 324 if (error) 325 return (error); 326 idp->saveent.d_namlen = 0; 327 } 328 } 329 } 330 idp->current.d_reclen = _DIRENT_SIZE(&idp->current); 331 if (assoc) { 332 idp->assocoff = idp->curroff; 333 memcpy(&idp->assocent, &idp->current, idp->current.d_reclen); 334 } else { 335 idp->saveoff = idp->curroff; 336 memcpy(&idp->saveent, &idp->current, idp->current.d_reclen); 337 } 338 return (0); 339 } 340 341 /* 342 * Vnode op for readdir 343 */ 344 int 345 cd9660_readdir(void *v) 346 { 347 struct vop_readdir_args /* { 348 struct vnode *a_vp; 349 struct uio *a_uio; 350 kauth_cred_t a_cred; 351 int *a_eofflag; 352 off_t **a_cookies; 353 int *a_ncookies; 354 } */ *ap = v; 355 struct uio *uio = ap->a_uio; 356 struct isoreaddir *idp; 357 struct vnode *vdp = ap->a_vp; 358 struct iso_node *dp; 359 struct iso_mnt *imp; 360 struct buf *bp = NULL; 361 struct iso_directory_record *ep; 362 int entryoffsetinblock; 363 doff_t endsearch; 364 u_long bmask; 365 int error = 0; 366 int reclen; 367 u_short namelen; 368 off_t *cookies = NULL; 369 int ncookies = 0; 370 371 if (vdp->v_type != VDIR) 372 return (ENOTDIR); 373 374 dp = VTOI(vdp); 375 imp = dp->i_mnt; 376 bmask = imp->im_bmask; 377 378 idp = (struct isoreaddir *)malloc(sizeof(*idp), M_TEMP, M_WAITOK); 379 idp->saveent.d_namlen = idp->assocent.d_namlen = 0; 380 /* 381 * XXX 382 * Is it worth trying to figure out the type? 383 */ 384 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type = 385 DT_UNKNOWN; 386 idp->uio = uio; 387 if (ap->a_ncookies == NULL) 388 idp->cookies = NULL; 389 else { 390 ncookies = uio->uio_resid / _DIRENT_MINSIZE((struct dirent *)0); 391 cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 392 idp->cookies = cookies; 393 idp->ncookies = ncookies; 394 } 395 idp->eofflag = 1; 396 idp->curroff = uio->uio_offset; 397 398 if ((entryoffsetinblock = idp->curroff & bmask) && 399 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) { 400 free(idp, M_TEMP); 401 return (error); 402 } 403 endsearch = dp->i_size; 404 405 while (idp->curroff < endsearch) { 406 /* 407 * If offset is on a block boundary, 408 * read the next directory block. 409 * Release previous if it exists. 410 */ 411 if ((idp->curroff & bmask) == 0) { 412 if (bp != NULL) 413 brelse(bp, 0); 414 error = cd9660_blkatoff(vdp, (off_t)idp->curroff, 415 NULL, &bp); 416 if (error) 417 break; 418 entryoffsetinblock = 0; 419 } 420 /* 421 * Get pointer to next entry. 422 */ 423 KASSERT(bp != NULL); 424 ep = (struct iso_directory_record *) 425 ((char *)bp->b_data + entryoffsetinblock); 426 427 reclen = isonum_711(ep->length); 428 if (reclen == 0) { 429 /* skip to next block, if any */ 430 idp->curroff = 431 (idp->curroff & ~bmask) + imp->logical_block_size; 432 continue; 433 } 434 435 if (reclen < ISO_DIRECTORY_RECORD_SIZE) { 436 error = EINVAL; 437 /* illegal entry, stop */ 438 break; 439 } 440 441 if (entryoffsetinblock + reclen > imp->logical_block_size) { 442 error = EINVAL; 443 /* illegal directory, so stop looking */ 444 break; 445 } 446 447 idp->current.d_namlen = isonum_711(ep->name_len); 448 449 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) { 450 error = EINVAL; 451 /* illegal entry, stop */ 452 break; 453 } 454 455 if (isonum_711(ep->flags)&2) 456 idp->current.d_fileno = isodirino(ep, imp); 457 else 458 idp->current.d_fileno = dbtob(bp->b_blkno) + 459 entryoffsetinblock; 460 461 idp->curroff += reclen; 462 463 switch (imp->iso_ftype) { 464 case ISO_FTYPE_RRIP: 465 cd9660_rrip_getname(ep, idp->current.d_name, &namelen, 466 &idp->current.d_fileno, imp); 467 idp->current.d_namlen = (u_char)namelen; 468 if (idp->current.d_namlen) 469 error = iso_uiodir(idp, &idp->current, 470 idp->curroff); 471 break; 472 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 */ 473 isofntrans(ep->name, idp->current.d_namlen, 474 idp->current.d_name, &namelen, 475 imp->iso_ftype == ISO_FTYPE_9660, 476 (imp->im_flags & ISOFSMNT_NOCASETRANS) == 0, 477 isonum_711(ep->flags)&4, 478 imp->im_joliet_level); 479 switch (idp->current.d_name[0]) { 480 case 0: 481 idp->current.d_name[0] = '.'; 482 idp->current.d_namlen = 1; 483 error = iso_uiodir(idp, &idp->current, 484 idp->curroff); 485 break; 486 case 1: 487 strlcpy(idp->current.d_name, "..", 488 sizeof(idp->current.d_name)); 489 idp->current.d_namlen = 2; 490 error = iso_uiodir(idp, &idp->current, 491 idp->curroff); 492 break; 493 default: 494 idp->current.d_namlen = (u_char)namelen; 495 if (imp->iso_ftype == ISO_FTYPE_DEFAULT) 496 error = iso_shipdir(idp); 497 else 498 error = iso_uiodir(idp, &idp->current, 499 idp->curroff); 500 break; 501 } 502 } 503 if (error) 504 break; 505 506 entryoffsetinblock += reclen; 507 } 508 509 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { 510 idp->current.d_namlen = 0; 511 error = iso_shipdir(idp); 512 } 513 if (error < 0) 514 error = 0; 515 516 if (ap->a_ncookies != NULL) { 517 if (error) 518 free(cookies, M_TEMP); 519 else { 520 /* 521 * Work out the number of cookies actually used. 522 */ 523 *ap->a_ncookies = ncookies - idp->ncookies; 524 *ap->a_cookies = cookies; 525 } 526 } 527 528 if (bp) 529 brelse(bp, 0); 530 531 uio->uio_offset = idp->uio_off; 532 *ap->a_eofflag = idp->eofflag; 533 534 free(idp, M_TEMP); 535 536 return (error); 537 } 538 539 /* 540 * Return target name of a symbolic link 541 * Shouldn't we get the parent vnode and read the data from there? 542 * This could eventually result in deadlocks in cd9660_lookup. 543 * But otherwise the block read here is in the block buffer two times. 544 */ 545 typedef struct iso_directory_record ISODIR; 546 typedef struct iso_node ISONODE; 547 typedef struct iso_mnt ISOMNT; 548 549 int 550 cd9660_readlink(void *v) 551 { 552 struct vop_readlink_args /* { 553 struct vnode *a_vp; 554 struct uio *a_uio; 555 kauth_cred_t a_cred; 556 } */ *ap = v; 557 ISONODE *ip; 558 ISODIR *dirp; 559 ISOMNT *imp; 560 struct buf *bp; 561 struct uio *uio; 562 u_short symlen; 563 int error; 564 char *symname; 565 bool use_pnbuf; 566 567 ip = VTOI(ap->a_vp); 568 imp = ip->i_mnt; 569 uio = ap->a_uio; 570 571 if (imp->iso_ftype != ISO_FTYPE_RRIP) 572 return (EINVAL); 573 574 /* 575 * Get parents directory record block that this inode included. 576 */ 577 error = bread(imp->im_devvp, 578 (ip->i_number >> imp->im_bshift) << 579 (imp->im_bshift - DEV_BSHIFT), 580 imp->logical_block_size, NOCRED, 0, &bp); 581 if (error) { 582 brelse(bp, 0); 583 return (EINVAL); 584 } 585 586 /* 587 * Setup the directory pointer for this inode 588 */ 589 dirp = (ISODIR *)((char *)bp->b_data + (ip->i_number & imp->im_bmask)); 590 591 /* 592 * Just make sure, we have a right one.... 593 * 1: Check not cross boundary on block 594 */ 595 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) 596 > imp->logical_block_size) { 597 brelse(bp, 0); 598 return (EINVAL); 599 } 600 601 /* 602 * Now get a buffer 603 * Abuse a namei buffer for now. 604 */ 605 use_pnbuf = !VMSPACE_IS_KERNEL_P(uio->uio_vmspace) || 606 uio->uio_iov->iov_len < MAXPATHLEN; 607 if (use_pnbuf) { 608 symname = PNBUF_GET(); 609 } else { 610 symname = uio->uio_iov->iov_base; 611 } 612 613 /* 614 * Ok, we just gathering a symbolic name in SL record. 615 */ 616 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { 617 if (use_pnbuf) { 618 PNBUF_PUT(symname); 619 } 620 brelse(bp, 0); 621 return (EINVAL); 622 } 623 /* 624 * Don't forget before you leave from home ;-) 625 */ 626 brelse(bp, 0); 627 628 /* 629 * return with the symbolic name to caller's. 630 */ 631 if (use_pnbuf) { 632 error = uiomove(symname, symlen, uio); 633 PNBUF_PUT(symname); 634 return (error); 635 } 636 uio->uio_resid -= symlen; 637 uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen; 638 uio->uio_iov->iov_len -= symlen; 639 return (0); 640 } 641 642 int 643 cd9660_link(void *v) 644 { 645 struct vop_link_args /* { 646 struct vnode *a_dvp; 647 struct vnode *a_vp; 648 struct componentname *a_cnp; 649 } */ *ap = v; 650 651 VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 652 vput(ap->a_dvp); 653 return (EROFS); 654 } 655 656 int 657 cd9660_symlink(void *v) 658 { 659 struct vop_symlink_args /* { 660 struct vnode *a_dvp; 661 struct vnode **a_vpp; 662 struct componentname *a_cnp; 663 struct vattr *a_vap; 664 char *a_target; 665 } */ *ap = v; 666 667 VOP_ABORTOP(ap->a_dvp, ap->a_cnp); 668 vput(ap->a_dvp); 669 return (EROFS); 670 } 671 672 /* 673 * Calculate the logical to physical mapping if not done already, 674 * then call the device strategy routine. 675 */ 676 int 677 cd9660_strategy(void *v) 678 { 679 struct vop_strategy_args /* { 680 struct vnode *a_vp; 681 struct buf *a_bp; 682 } */ *ap = v; 683 struct buf *bp = ap->a_bp; 684 struct vnode *vp = ap->a_vp; 685 struct iso_node *ip; 686 int error; 687 688 ip = VTOI(vp); 689 if (vp->v_type == VBLK || vp->v_type == VCHR) 690 panic("cd9660_strategy: spec"); 691 if (bp->b_blkno == bp->b_lblkno) { 692 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL); 693 if (error) { 694 bp->b_error = error; 695 biodone(bp); 696 return (error); 697 } 698 if ((long)bp->b_blkno == -1) 699 clrbuf(bp); 700 } 701 if ((long)bp->b_blkno == -1) { 702 biodone(bp); 703 return (0); 704 } 705 vp = ip->i_devvp; 706 return (VOP_STRATEGY(vp, bp)); 707 } 708 709 /* 710 * Print out the contents of an inode. 711 */ 712 /*ARGSUSED*/ 713 int 714 cd9660_print(void *v) 715 { 716 717 printf("tag VT_ISOFS, isofs vnode\n"); 718 return (0); 719 } 720 721 /* 722 * Return POSIX pathconf information applicable to cd9660 filesystems. 723 */ 724 int 725 cd9660_pathconf(void *v) 726 { 727 struct vop_pathconf_args /* { 728 struct vnode *a_vp; 729 int a_name; 730 register_t *a_retval; 731 } */ *ap = v; 732 switch (ap->a_name) { 733 case _PC_LINK_MAX: 734 *ap->a_retval = 1; 735 return (0); 736 case _PC_NAME_MAX: 737 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) 738 *ap->a_retval = NAME_MAX; 739 else 740 *ap->a_retval = 37; 741 return (0); 742 case _PC_PATH_MAX: 743 *ap->a_retval = PATH_MAX; 744 return (0); 745 case _PC_PIPE_BUF: 746 *ap->a_retval = PIPE_BUF; 747 return (0); 748 case _PC_CHOWN_RESTRICTED: 749 *ap->a_retval = 1; 750 return (0); 751 case _PC_NO_TRUNC: 752 *ap->a_retval = 1; 753 return (0); 754 case _PC_SYNC_IO: 755 *ap->a_retval = 1; 756 return (0); 757 case _PC_FILESIZEBITS: 758 *ap->a_retval = 32; 759 return (0); 760 default: 761 return (EINVAL); 762 } 763 /* NOTREACHED */ 764 } 765 766 /* 767 * Allow changing the size for special files (and fifos). 768 */ 769 int 770 cd9660_setattr(void *v) 771 { 772 struct vop_setattr_args /* { 773 struct vnodeop_desc *a_desc; 774 struct vnode *a_vp; 775 struct vattr *a_vap; 776 kauth_cred_t a_cred; 777 struct proc *a_p; 778 } */ *ap = v; 779 struct vattr *vap = ap->a_vap; 780 struct vnode *vp = ap->a_vp; 781 782 /* 783 * Only size is changeable. 784 */ 785 if (vap->va_type != VNON 786 || vap->va_nlink != (nlink_t)VNOVAL 787 || vap->va_fsid != VNOVAL 788 || vap->va_fileid != VNOVAL 789 || vap->va_blocksize != VNOVAL 790 || vap->va_rdev != (dev_t)VNOVAL 791 || (int)vap->va_bytes != VNOVAL 792 || vap->va_gen != VNOVAL 793 || vap->va_flags != VNOVAL 794 || vap->va_uid != (uid_t)VNOVAL 795 || vap->va_gid != (gid_t)VNOVAL 796 || vap->va_atime.tv_sec != VNOVAL 797 || vap->va_mtime.tv_sec != VNOVAL 798 || vap->va_mode != (mode_t)VNOVAL) 799 return EOPNOTSUPP; 800 801 if (vap->va_size != VNOVAL 802 && vp->v_type != VCHR 803 && vp->v_type != VBLK 804 && vp->v_type != VFIFO) 805 return EOPNOTSUPP; 806 807 return 0; 808 } 809 810 /* 811 * Global vfs data structures for isofs 812 */ 813 #define cd9660_create genfs_eopnotsupp 814 #define cd9660_mknod genfs_eopnotsupp 815 #define cd9660_write genfs_eopnotsupp 816 #define cd9660_fsync genfs_nullop 817 #define cd9660_remove genfs_eopnotsupp 818 #define cd9660_rename genfs_eopnotsupp 819 #define cd9660_mkdir genfs_eopnotsupp 820 #define cd9660_rmdir genfs_eopnotsupp 821 #define cd9660_advlock genfs_einval 822 #define cd9660_bwrite genfs_eopnotsupp 823 #define cd9660_revoke genfs_revoke 824 825 /* 826 * Global vfs data structures for cd9660 827 */ 828 int (**cd9660_vnodeop_p)(void *); 829 const struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = { 830 { &vop_default_desc, vn_default_error }, 831 { &vop_lookup_desc, cd9660_lookup }, /* lookup */ 832 { &vop_create_desc, cd9660_create }, /* create */ 833 { &vop_mknod_desc, cd9660_mknod }, /* mknod */ 834 { &vop_open_desc, cd9660_open }, /* open */ 835 { &vop_close_desc, cd9660_close }, /* close */ 836 { &vop_access_desc, cd9660_access }, /* access */ 837 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 838 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 839 { &vop_read_desc, cd9660_read }, /* read */ 840 { &vop_write_desc, cd9660_write }, /* write */ 841 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 842 { &vop_ioctl_desc, cd9660_ioctl }, /* ioctl */ 843 { &vop_poll_desc, cd9660_poll }, /* poll */ 844 { &vop_revoke_desc, cd9660_revoke }, /* revoke */ 845 { &vop_mmap_desc, cd9660_mmap }, /* mmap */ 846 { &vop_fsync_desc, cd9660_fsync }, /* fsync */ 847 { &vop_seek_desc, cd9660_seek }, /* seek */ 848 { &vop_remove_desc, cd9660_remove }, /* remove */ 849 { &vop_link_desc, cd9660_link }, /* link */ 850 { &vop_rename_desc, cd9660_rename }, /* rename */ 851 { &vop_mkdir_desc, cd9660_mkdir }, /* mkdir */ 852 { &vop_rmdir_desc, cd9660_rmdir }, /* rmdir */ 853 { &vop_symlink_desc, cd9660_symlink }, /* symlink */ 854 { &vop_readdir_desc, cd9660_readdir }, /* readdir */ 855 { &vop_readlink_desc, cd9660_readlink }, /* readlink */ 856 { &vop_abortop_desc, cd9660_abortop }, /* abortop */ 857 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 858 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 859 { &vop_lock_desc, genfs_lock }, /* lock */ 860 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 861 { &vop_bmap_desc, cd9660_bmap }, /* bmap */ 862 { &vop_strategy_desc, cd9660_strategy }, /* strategy */ 863 { &vop_print_desc, cd9660_print }, /* print */ 864 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 865 { &vop_pathconf_desc, cd9660_pathconf }, /* pathconf */ 866 { &vop_advlock_desc, cd9660_advlock }, /* advlock */ 867 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 868 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 869 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 870 { NULL, NULL } 871 }; 872 const struct vnodeopv_desc cd9660_vnodeop_opv_desc = 873 { &cd9660_vnodeop_p, cd9660_vnodeop_entries }; 874 875 /* 876 * Special device vnode ops 877 */ 878 int (**cd9660_specop_p)(void *); 879 const struct vnodeopv_entry_desc cd9660_specop_entries[] = { 880 { &vop_default_desc, vn_default_error }, 881 { &vop_lookup_desc, spec_lookup }, /* lookup */ 882 { &vop_create_desc, spec_create }, /* create */ 883 { &vop_mknod_desc, spec_mknod }, /* mknod */ 884 { &vop_open_desc, spec_open }, /* open */ 885 { &vop_close_desc, spec_close }, /* close */ 886 { &vop_access_desc, cd9660_access }, /* access */ 887 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 888 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 889 { &vop_read_desc, spec_read }, /* read */ 890 { &vop_write_desc, spec_write }, /* write */ 891 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 892 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 893 { &vop_poll_desc, spec_poll }, /* poll */ 894 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 895 { &vop_revoke_desc, spec_revoke }, /* revoke */ 896 { &vop_mmap_desc, spec_mmap }, /* mmap */ 897 { &vop_fsync_desc, spec_fsync }, /* fsync */ 898 { &vop_seek_desc, spec_seek }, /* seek */ 899 { &vop_remove_desc, spec_remove }, /* remove */ 900 { &vop_link_desc, spec_link }, /* link */ 901 { &vop_rename_desc, spec_rename }, /* rename */ 902 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 903 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 904 { &vop_symlink_desc, spec_symlink }, /* symlink */ 905 { &vop_readdir_desc, spec_readdir }, /* readdir */ 906 { &vop_readlink_desc, spec_readlink }, /* readlink */ 907 { &vop_abortop_desc, spec_abortop }, /* abortop */ 908 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 909 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 910 { &vop_lock_desc, genfs_lock }, /* lock */ 911 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 912 { &vop_bmap_desc, spec_bmap }, /* bmap */ 913 { &vop_strategy_desc, spec_strategy }, /* strategy */ 914 { &vop_print_desc, cd9660_print }, /* print */ 915 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 916 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 917 { &vop_advlock_desc, spec_advlock }, /* advlock */ 918 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 919 { &vop_getpages_desc, spec_getpages }, /* getpages */ 920 { &vop_putpages_desc, spec_putpages }, /* putpages */ 921 { NULL, NULL } 922 }; 923 const struct vnodeopv_desc cd9660_specop_opv_desc = 924 { &cd9660_specop_p, cd9660_specop_entries }; 925 926 int (**cd9660_fifoop_p)(void *); 927 const struct vnodeopv_entry_desc cd9660_fifoop_entries[] = { 928 { &vop_default_desc, vn_default_error }, 929 { &vop_lookup_desc, fifo_lookup }, /* lookup */ 930 { &vop_create_desc, fifo_create }, /* create */ 931 { &vop_mknod_desc, fifo_mknod }, /* mknod */ 932 { &vop_open_desc, fifo_open }, /* open */ 933 { &vop_close_desc, fifo_close }, /* close */ 934 { &vop_access_desc, cd9660_access }, /* access */ 935 { &vop_getattr_desc, cd9660_getattr }, /* getattr */ 936 { &vop_setattr_desc, cd9660_setattr }, /* setattr */ 937 { &vop_read_desc, fifo_read }, /* read */ 938 { &vop_write_desc, fifo_write }, /* write */ 939 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 940 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 941 { &vop_poll_desc, fifo_poll }, /* poll */ 942 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 943 { &vop_revoke_desc, fifo_revoke }, /* revoke */ 944 { &vop_mmap_desc, fifo_mmap }, /* mmap */ 945 { &vop_fsync_desc, fifo_fsync }, /* fsync */ 946 { &vop_seek_desc, fifo_seek }, /* seek */ 947 { &vop_remove_desc, fifo_remove }, /* remove */ 948 { &vop_link_desc, fifo_link } , /* link */ 949 { &vop_rename_desc, fifo_rename }, /* rename */ 950 { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ 951 { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ 952 { &vop_symlink_desc, fifo_symlink }, /* symlink */ 953 { &vop_readdir_desc, fifo_readdir }, /* readdir */ 954 { &vop_readlink_desc, fifo_readlink }, /* readlink */ 955 { &vop_abortop_desc, fifo_abortop }, /* abortop */ 956 { &vop_inactive_desc, cd9660_inactive }, /* inactive */ 957 { &vop_reclaim_desc, cd9660_reclaim }, /* reclaim */ 958 { &vop_lock_desc, genfs_lock }, /* lock */ 959 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 960 { &vop_bmap_desc, fifo_bmap }, /* bmap */ 961 { &vop_strategy_desc, fifo_strategy }, /* strategy */ 962 { &vop_print_desc, cd9660_print }, /* print */ 963 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 964 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 965 { &vop_advlock_desc, fifo_advlock }, /* advlock */ 966 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 967 { &vop_putpages_desc, fifo_putpages }, /* putpages */ 968 { NULL, NULL } 969 }; 970 const struct vnodeopv_desc cd9660_fifoop_opv_desc = 971 { &cd9660_fifoop_p, cd9660_fifoop_entries }; 972
Indexes created Mon Sep 29 13:09:55 GMT 2025