1 /*- 2 * Copyright (c) 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). 9 * 10 * %sccs.include.redist.c% 11 * 12 * @(#)cd9660_vfsops.c 8.9 (Berkeley) 12/05/94 13 */ 14 15 #include <sys/param.h> 16 #include <sys/systm.h> 17 #include <sys/namei.h> 18 #include <sys/proc.h> 19 #include <sys/kernel.h> 20 #include <sys/vnode.h> 21 #include <miscfs/specfs/specdev.h> 22 #include <sys/mount.h> 23 #include <sys/buf.h> 24 #include <sys/file.h> 25 #include <sys/dkbad.h> 26 #include <sys/disklabel.h> 27 #include <sys/ioctl.h> 28 #include <sys/errno.h> 29 #include <sys/malloc.h> 30 #include <sys/stat.h> 31 32 #include <isofs/cd9660/iso.h> 33 #include <isofs/cd9660/cd9660_node.h> 34 35 extern int enodev (); 36 37 struct vfsops cd9660_vfsops = { 38 cd9660_mount, 39 cd9660_start, 40 cd9660_unmount, 41 cd9660_root, 42 cd9660_quotactl, 43 cd9660_statfs, 44 cd9660_sync, 45 cd9660_vget, 46 cd9660_fhtovp, 47 cd9660_vptofh, 48 cd9660_init, 49 }; 50 51 /* 52 * Called by vfs_mountroot when iso is going to be mounted as root. 53 * 54 * Name is updated by mount(8) after booting. 55 */ 56 #define ROOTNAME "root_device" 57 58 static iso_mountfs(); 59 60 cd9660_mountroot() 61 { 62 register struct mount *mp; 63 extern struct vnode *rootvp; 64 struct proc *p = curproc; /* XXX */ 65 struct iso_mnt *imp; 66 register struct fs *fs; 67 u_int size; 68 int error; 69 struct iso_args args; 70 71 /* 72 * Get vnodes for swapdev and rootdev. 73 */ 74 if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp)) 75 panic("cd9660_mountroot: can't setup bdevvp's"); 76 77 mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK); 78 bzero((char *)mp, (u_long)sizeof(struct mount)); 79 mp->mnt_op = &cd9660_vfsops; 80 mp->mnt_flag = MNT_RDONLY; 81 LIST_INIT(&mp->mnt_vnodelist); 82 args.flags = ISOFSMNT_ROOT; 83 if (error = iso_mountfs(rootvp, mp, p, &args)) { 84 free(mp, M_MOUNT); 85 return (error); 86 } 87 if (error = vfs_lock(mp)) { 88 (void)cd9660_unmount(mp, 0, p); 89 free(mp, M_MOUNT); 90 return (error); 91 } 92 TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); 93 mp->mnt_flag |= MNT_ROOTFS; 94 mp->mnt_vnodecovered = NULLVP; 95 imp = VFSTOISOFS(mp); 96 bzero(imp->im_fsmnt, sizeof(imp->im_fsmnt)); 97 imp->im_fsmnt[0] = '/'; 98 bcopy((caddr_t)imp->im_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, 99 MNAMELEN); 100 (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, 101 &size); 102 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 103 (void) cd9660_statfs(mp, &mp->mnt_stat, p); 104 vfs_unlock(mp); 105 return (0); 106 } 107 108 /* 109 * VFS Operations. 110 * 111 * mount system call 112 */ 113 cd9660_mount(mp, path, data, ndp, p) 114 register struct mount *mp; 115 char *path; 116 caddr_t data; 117 struct nameidata *ndp; 118 struct proc *p; 119 { 120 struct vnode *devvp; 121 struct iso_args args; 122 u_int size; 123 int error; 124 struct iso_mnt *imp; 125 126 if (error = copyin(data, (caddr_t)&args, sizeof (struct iso_args))) 127 return (error); 128 129 if ((mp->mnt_flag & MNT_RDONLY) == 0) 130 return (EROFS); 131 132 /* 133 * If updating, check whether changing from read-only to 134 * read/write; if there is no device name, that's all we do. 135 */ 136 if (mp->mnt_flag & MNT_UPDATE) { 137 imp = VFSTOISOFS(mp); 138 if (args.fspec == 0) 139 return (vfs_export(mp, &imp->im_export, &args.export)); 140 } 141 /* 142 * Not an update, or updating the name: look up the name 143 * and verify that it refers to a sensible block device. 144 */ 145 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); 146 if (error = namei(ndp)) 147 return (error); 148 devvp = ndp->ni_vp; 149 150 if (devvp->v_type != VBLK) { 151 vrele(devvp); 152 return ENOTBLK; 153 } 154 if (major(devvp->v_rdev) >= nblkdev) { 155 vrele(devvp); 156 return ENXIO; 157 } 158 if ((mp->mnt_flag & MNT_UPDATE) == 0) 159 error = iso_mountfs(devvp, mp, p, &args); 160 else { 161 if (devvp != imp->im_devvp) 162 error = EINVAL; /* needs translation */ 163 else 164 vrele(devvp); 165 } 166 if (error) { 167 vrele(devvp); 168 return error; 169 } 170 imp = VFSTOISOFS(mp); 171 (void) copyinstr(path, imp->im_fsmnt, sizeof(imp->im_fsmnt)-1, &size); 172 bzero(imp->im_fsmnt + size, sizeof(imp->im_fsmnt) - size); 173 bcopy((caddr_t)imp->im_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname, 174 MNAMELEN); 175 (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, 176 &size); 177 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 178 (void) cd9660_statfs(mp, &mp->mnt_stat, p); 179 return 0; 180 } 181 182 /* 183 * Common code for mount and mountroot 184 */ 185 static iso_mountfs(devvp, mp, p, argp) 186 register struct vnode *devvp; 187 struct mount *mp; 188 struct proc *p; 189 struct iso_args *argp; 190 { 191 register struct iso_mnt *isomp = (struct iso_mnt *)0; 192 struct buf *bp = NULL; 193 dev_t dev = devvp->v_rdev; 194 caddr_t base, space; 195 int havepart = 0, blks; 196 int error = EINVAL, i, size; 197 int needclose = 0; 198 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 199 extern struct vnode *rootvp; 200 int j; 201 int iso_bsize; 202 int iso_blknum; 203 struct iso_volume_descriptor *vdp; 204 struct iso_primary_descriptor *pri; 205 struct iso_directory_record *rootp; 206 int logical_block_size; 207 208 if (!ronly) 209 return EROFS; 210 211 /* 212 * Disallow multiple mounts of the same device. 213 * Disallow mounting of a device that is currently in use 214 * (except for root, which might share swap device for miniroot). 215 * Flush out any old buffers remaining from a previous use. 216 */ 217 if (error = vfs_mountedon(devvp)) 218 return error; 219 if (vcount(devvp) > 1 && devvp != rootvp) 220 return EBUSY; 221 if (error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0)) 222 return (error); 223 224 if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p)) 225 return error; 226 needclose = 1; 227 228 /* This is the "logical sector size". The standard says this 229 * should be 2048 or the physical sector size on the device, 230 * whichever is greater. For now, we'll just use a constant. 231 */ 232 iso_bsize = ISO_DEFAULT_BLOCK_SIZE; 233 234 for (iso_blknum = 16; iso_blknum < 100; iso_blknum++) { 235 if (error = bread(devvp, iso_blknum * btodb(iso_bsize), 236 iso_bsize, NOCRED, &bp)) 237 goto out; 238 239 vdp = (struct iso_volume_descriptor *)bp->b_data; 240 if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) { 241 error = EINVAL; 242 goto out; 243 } 244 245 if (isonum_711 (vdp->type) == ISO_VD_END) { 246 error = EINVAL; 247 goto out; 248 } 249 250 if (isonum_711 (vdp->type) == ISO_VD_PRIMARY) 251 break; 252 brelse(bp); 253 } 254 255 if (isonum_711 (vdp->type) != ISO_VD_PRIMARY) { 256 error = EINVAL; 257 goto out; 258 } 259 260 pri = (struct iso_primary_descriptor *)vdp; 261 262 logical_block_size = isonum_723 (pri->logical_block_size); 263 264 if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE 265 || (logical_block_size & (logical_block_size - 1)) != 0) { 266 error = EINVAL; 267 goto out; 268 } 269 270 rootp = (struct iso_directory_record *)pri->root_directory_record; 271 272 isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK); 273 bzero((caddr_t)isomp, sizeof *isomp); 274 isomp->logical_block_size = logical_block_size; 275 isomp->volume_space_size = isonum_733 (pri->volume_space_size); 276 bcopy (rootp, isomp->root, sizeof isomp->root); 277 isomp->root_extent = isonum_733 (rootp->extent); 278 isomp->root_size = isonum_733 (rootp->size); 279 280 isomp->im_bmask = logical_block_size - 1; 281 isomp->im_bshift = 0; 282 while ((1 << isomp->im_bshift) < isomp->logical_block_size) 283 isomp->im_bshift++; 284 285 bp->b_flags |= B_AGE; 286 brelse(bp); 287 bp = NULL; 288 289 mp->mnt_data = (qaddr_t)isomp; 290 mp->mnt_stat.f_fsid.val[0] = (long)dev; 291 mp->mnt_stat.f_fsid.val[1] = MOUNT_CD9660; 292 mp->mnt_maxsymlinklen = 0; 293 mp->mnt_flag |= MNT_LOCAL; 294 isomp->im_mountp = mp; 295 isomp->im_dev = dev; 296 isomp->im_devvp = devvp; 297 298 devvp->v_specflags |= SI_MOUNTEDON; 299 300 /* Check the Rock Ridge Extention support */ 301 if (!(argp->flags & ISOFSMNT_NORRIP)) { 302 if (error = bread(isomp->im_devvp, 303 (isomp->root_extent + isonum_711(rootp->ext_attr_length)) << 304 (isomp->im_bshift - DEV_BSHIFT), 305 isomp->logical_block_size, NOCRED, &bp)) 306 goto out; 307 308 rootp = (struct iso_directory_record *)bp->b_data; 309 310 if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) { 311 argp->flags |= ISOFSMNT_NORRIP; 312 } else { 313 argp->flags &= ~ISOFSMNT_GENS; 314 } 315 316 /* 317 * The contents are valid, 318 * but they will get reread as part of another vnode, so... 319 */ 320 bp->b_flags |= B_AGE; 321 brelse(bp); 322 bp = NULL; 323 } 324 isomp->im_flags = argp->flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS|ISOFSMNT_EXTATT); 325 switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) { 326 default: 327 isomp->iso_ftype = ISO_FTYPE_DEFAULT; 328 break; 329 case ISOFSMNT_GENS|ISOFSMNT_NORRIP: 330 isomp->iso_ftype = ISO_FTYPE_9660; 331 break; 332 case 0: 333 isomp->iso_ftype = ISO_FTYPE_RRIP; 334 break; 335 } 336 337 return 0; 338 out: 339 if (bp) 340 brelse(bp); 341 if (needclose) 342 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p); 343 if (isomp) { 344 free((caddr_t)isomp, M_ISOFSMNT); 345 mp->mnt_data = (qaddr_t)0; 346 } 347 return error; 348 } 349 350 /* 351 * Make a filesystem operational. 352 * Nothing to do at the moment. 353 */ 354 /* ARGSUSED */ 355 cd9660_start(mp, flags, p) 356 struct mount *mp; 357 int flags; 358 struct proc *p; 359 { 360 return 0; 361 } 362 363 /* 364 * unmount system call 365 */ 366 int 367 cd9660_unmount(mp, mntflags, p) 368 struct mount *mp; 369 int mntflags; 370 struct proc *p; 371 { 372 register struct iso_mnt *isomp; 373 int i, error, ronly, flags = 0; 374 375 if (mntflags & MNT_FORCE) { 376 extern int doforce; 377 378 if (!doforce || (mp->mnt_flag & MNT_ROOTFS)) 379 return (EINVAL); 380 flags |= FORCECLOSE; 381 } 382 #if 0 383 mntflushbuf(mp, 0); 384 if (mntinvalbuf(mp)) 385 return EBUSY; 386 #endif 387 if (error = vflush(mp, NULLVP, flags)) 388 return (error); 389 390 isomp = VFSTOISOFS(mp); 391 392 #ifdef ISODEVMAP 393 if (isomp->iso_ftype == ISO_FTYPE_RRIP) 394 iso_dunmap(isomp->im_dev); 395 #endif 396 397 isomp->im_devvp->v_specflags &= ~SI_MOUNTEDON; 398 error = VOP_CLOSE(isomp->im_devvp, FREAD, NOCRED, p); 399 vrele(isomp->im_devvp); 400 free((caddr_t)isomp, M_ISOFSMNT); 401 mp->mnt_data = (qaddr_t)0; 402 mp->mnt_flag &= ~MNT_LOCAL; 403 return (error); 404 } 405 406 /* 407 * Return root of a filesystem 408 */ 409 cd9660_root(mp, vpp) 410 struct mount *mp; 411 struct vnode **vpp; 412 { 413 struct iso_mnt *imp = VFSTOISOFS(mp); 414 struct iso_directory_record *dp = 415 (struct iso_directory_record *)imp->root; 416 ino_t ino = isodirino(dp, imp); 417 418 /* 419 * With RRIP we must use the `.' entry of the root directory. 420 * Simply tell vget, that it's a relocated directory. 421 */ 422 return (cd9660_vget_internal(mp, ino, vpp, 423 imp->iso_ftype == ISO_FTYPE_RRIP, dp)); 424 } 425 426 /* 427 * Do operations associated with quotas, not supported 428 */ 429 /* ARGSUSED */ 430 int 431 cd9660_quotactl(mp, cmd, uid, arg, p) 432 struct mount *mp; 433 int cmd; 434 uid_t uid; 435 caddr_t arg; 436 struct proc *p; 437 { 438 439 return (EOPNOTSUPP); 440 } 441 442 /* 443 * Get file system statistics. 444 */ 445 cd9660_statfs(mp, sbp, p) 446 struct mount *mp; 447 register struct statfs *sbp; 448 struct proc *p; 449 { 450 register struct iso_mnt *isomp; 451 register struct fs *fs; 452 453 isomp = VFSTOISOFS(mp); 454 455 #ifdef COMPAT_09 456 sbp->f_type = 5; 457 #else 458 sbp->f_type = 0; 459 #endif 460 sbp->f_bsize = isomp->logical_block_size; 461 sbp->f_iosize = sbp->f_bsize; /* XXX */ 462 sbp->f_blocks = isomp->volume_space_size; 463 sbp->f_bfree = 0; /* total free blocks */ 464 sbp->f_bavail = 0; /* blocks free for non superuser */ 465 sbp->f_files = 0; /* total files */ 466 sbp->f_ffree = 0; /* free file nodes */ 467 if (sbp != &mp->mnt_stat) { 468 bcopy((caddr_t)mp->mnt_stat.f_mntonname, 469 (caddr_t)&sbp->f_mntonname[0], MNAMELEN); 470 bcopy((caddr_t)mp->mnt_stat.f_mntfromname, 471 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); 472 } 473 /* Use the first spare for flags: */ 474 sbp->f_spare[0] = isomp->im_flags; 475 return 0; 476 } 477 478 /* ARGSUSED */ 479 int 480 cd9660_sync(mp, waitfor, cred, p) 481 struct mount *mp; 482 int waitfor; 483 struct ucred *cred; 484 struct proc *p; 485 { 486 return (0); 487 } 488 489 /* 490 * File handle to vnode 491 * 492 * Have to be really careful about stale file handles: 493 * - check that the inode number is in range 494 * - call iget() to get the locked inode 495 * - check for an unallocated inode (i_mode == 0) 496 * - check that the generation number matches 497 */ 498 499 struct ifid { 500 ushort ifid_len; 501 ushort ifid_pad; 502 int ifid_ino; 503 long ifid_start; 504 }; 505 506 /* ARGSUSED */ 507 int 508 cd9660_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) 509 register struct mount *mp; 510 struct fid *fhp; 511 struct mbuf *nam; 512 struct vnode **vpp; 513 int *exflagsp; 514 struct ucred **credanonp; 515 { 516 struct ifid *ifhp = (struct ifid *)fhp; 517 register struct iso_node *ip; 518 register struct netcred *np; 519 register struct iso_mnt *imp = VFSTOISOFS(mp); 520 struct vnode *nvp; 521 int error; 522 523 #ifdef ISOFS_DBG 524 printf("fhtovp: ino %d, start %ld\n", 525 ifhp->ifid_ino, ifhp->ifid_start); 526 #endif 527 528 /* 529 * Get the export permission structure for this <mp, client> tuple. 530 */ 531 np = vfs_export_lookup(mp, &imp->im_export, nam); 532 if (np == NULL) 533 return (EACCES); 534 535 if (error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) { 536 *vpp = NULLVP; 537 return (error); 538 } 539 ip = VTOI(nvp); 540 if (ip->inode.iso_mode == 0) { 541 vput(nvp); 542 *vpp = NULLVP; 543 return (ESTALE); 544 } 545 *vpp = nvp; 546 *exflagsp = np->netc_exflags; 547 *credanonp = &np->netc_anon; 548 return (0); 549 } 550 551 int 552 cd9660_vget(mp, ino, vpp) 553 struct mount *mp; 554 ino_t ino; 555 struct vnode **vpp; 556 { 557 558 /* 559 * XXXX 560 * It would be nice if we didn't always set the `relocated' flag 561 * and force the extra read, but I don't want to think about fixing 562 * that right now. 563 */ 564 return (cd9660_vget_internal(mp, ino, vpp, 565 #if 0 566 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, 567 #else 568 0, 569 #endif 570 (struct iso_directory_entry *)0)); 571 } 572 573 int 574 cd9660_vget_internal(mp, ino, vpp, relocated, isodir) 575 struct mount *mp; 576 ino_t ino; 577 struct vnode **vpp; 578 int relocated; 579 struct iso_directory_record *isodir; 580 { 581 register struct iso_mnt *imp; 582 struct iso_node *ip; 583 struct buf *bp; 584 struct vnode *vp, *nvp; 585 dev_t dev; 586 int error; 587 588 imp = VFSTOISOFS(mp); 589 dev = imp->im_dev; 590 if ((*vpp = cd9660_ihashget(dev, ino)) != NULLVP) 591 return (0); 592 593 /* Allocate a new vnode/iso_node. */ 594 if (error = getnewvnode(VT_ISOFS, mp, cd9660_vnodeop_p, &vp)) { 595 *vpp = NULLVP; 596 return (error); 597 } 598 MALLOC(ip, struct iso_node *, sizeof(struct iso_node), M_ISOFSNODE, 599 M_WAITOK); 600 bzero((caddr_t)ip, sizeof(struct iso_node)); 601 vp->v_data = ip; 602 ip->i_vnode = vp; 603 ip->i_dev = dev; 604 ip->i_number = ino; 605 606 /* 607 * Put it onto its hash chain and lock it so that other requests for 608 * this inode will block if they arrive while we are sleeping waiting 609 * for old data structures to be purged or for the contents of the 610 * disk portion of this inode to be read. 611 */ 612 cd9660_ihashins(ip); 613 614 if (isodir == 0) { 615 int lbn, off; 616 617 lbn = lblkno(imp, ino); 618 if (lbn >= imp->volume_space_size) { 619 vput(vp); 620 printf("fhtovp: lbn exceed volume space %d\n", lbn); 621 return (ESTALE); 622 } 623 624 off = blkoff(imp, ino); 625 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) { 626 vput(vp); 627 printf("fhtovp: crosses block boundary %d\n", 628 off + ISO_DIRECTORY_RECORD_SIZE); 629 return (ESTALE); 630 } 631 632 error = bread(imp->im_devvp, 633 lbn << (imp->im_bshift - DEV_BSHIFT), 634 imp->logical_block_size, NOCRED, &bp); 635 if (error) { 636 vput(vp); 637 brelse(bp); 638 printf("fhtovp: bread error %d\n",error); 639 return (error); 640 } 641 isodir = (struct iso_directory_record *)(bp->b_data + off); 642 643 if (off + isonum_711(isodir->length) > 644 imp->logical_block_size) { 645 vput(vp); 646 if (bp != 0) 647 brelse(bp); 648 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n", 649 off +isonum_711(isodir->length), off, 650 isonum_711(isodir->length)); 651 return (ESTALE); 652 } 653 654 #if 0 655 if (isonum_733(isodir->extent) + 656 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) { 657 if (bp != 0) 658 brelse(bp); 659 printf("fhtovp: file start miss %d vs %d\n", 660 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length), 661 ifhp->ifid_start); 662 return (ESTALE); 663 } 664 #endif 665 } else 666 bp = 0; 667 668 ip->i_mnt = imp; 669 ip->i_devvp = imp->im_devvp; 670 VREF(ip->i_devvp); 671 672 if (relocated) { 673 /* 674 * On relocated directories we must 675 * read the `.' entry out of a dir. 676 */ 677 ip->iso_start = ino >> imp->im_bshift; 678 if (bp != 0) 679 brelse(bp); 680 if (error = VOP_BLKATOFF(vp, (off_t)0, NULL, &bp)) { 681 vput(vp); 682 return (error); 683 } 684 isodir = (struct iso_directory_record *)bp->b_data; 685 } 686 687 ip->iso_extent = isonum_733(isodir->extent); 688 ip->i_size = isonum_733(isodir->size); 689 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent; 690 691 /* 692 * Setup time stamp, attribute 693 */ 694 vp->v_type = VNON; 695 switch (imp->iso_ftype) { 696 default: /* ISO_FTYPE_9660 */ 697 { 698 struct buf *bp2; 699 int off; 700 if ((imp->im_flags & ISOFSMNT_EXTATT) 701 && (off = isonum_711(isodir->ext_attr_length))) 702 VOP_BLKATOFF(vp, (off_t)-(off << imp->im_bshift), NULL, 703 &bp2); 704 else 705 bp2 = NULL; 706 cd9660_defattr(isodir, ip, bp2); 707 cd9660_deftstamp(isodir, ip, bp2); 708 if (bp2) 709 brelse(bp2); 710 break; 711 } 712 case ISO_FTYPE_RRIP: 713 cd9660_rrip_analyze(isodir, ip, imp); 714 break; 715 } 716 717 if (bp != 0) 718 brelse(bp); 719 720 /* 721 * Initialize the associated vnode 722 */ 723 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) { 724 case VFIFO: 725 #ifdef FIFO 726 vp->v_op = cd9660_fifoop_p; 727 break; 728 #else 729 vput(vp); 730 return (EOPNOTSUPP); 731 #endif /* FIFO */ 732 case VCHR: 733 case VBLK: 734 /* 735 * if device, look at device number table for translation 736 */ 737 #ifdef ISODEVMAP 738 if (dp = iso_dmap(dev, ino, 0)) 739 ip->inode.iso_rdev = dp->d_dev; 740 #endif 741 vp->v_op = cd9660_specop_p; 742 if (nvp = checkalias(vp, ip->inode.iso_rdev, mp)) { 743 /* 744 * Discard unneeded vnode, but save its iso_node. 745 */ 746 cd9660_ihashrem(ip); 747 VOP_UNLOCK(vp); 748 nvp->v_data = vp->v_data; 749 vp->v_data = NULL; 750 vp->v_op = spec_vnodeop_p; 751 vrele(vp); 752 vgone(vp); 753 /* 754 * Reinitialize aliased inode. 755 */ 756 vp = nvp; 757 ip->i_vnode = vp; 758 cd9660_ihashins(ip); 759 } 760 break; 761 } 762 763 if (ip->iso_extent == imp->root_extent) 764 vp->v_flag |= VROOT; 765 766 /* 767 * XXX need generation number? 768 */ 769 770 *vpp = vp; 771 return (0); 772 } 773 774 /* 775 * Vnode pointer to File handle 776 */ 777 /* ARGSUSED */ 778 cd9660_vptofh(vp, fhp) 779 struct vnode *vp; 780 struct fid *fhp; 781 { 782 register struct iso_node *ip = VTOI(vp); 783 register struct ifid *ifhp; 784 register struct iso_mnt *mp = ip->i_mnt; 785 786 ifhp = (struct ifid *)fhp; 787 ifhp->ifid_len = sizeof(struct ifid); 788 789 ifhp->ifid_ino = ip->i_number; 790 ifhp->ifid_start = ip->iso_start; 791 792 #ifdef ISOFS_DBG 793 printf("vptofh: ino %d, start %ld\n", 794 ifhp->ifid_ino,ifhp->ifid_start); 795 #endif 796 return 0; 797 } 798