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 8.6 (Berkeley) 07/24/94 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, btodb(iso_blknum * iso_bsize), 236 iso_bsize, NOCRED, &bp)) 237 goto out; 238 239 vdp = (struct iso_volume_descriptor *)bp->b_un.b_addr; 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->logical_block_size / DEV_BSIZE, 305 isomp->logical_block_size,NOCRED,&bp)) 306 goto out; 307 308 rootp = (struct iso_directory_record *)bp->b_un.b_addr; 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; 417 418 isodirino(&ino, dp, imp); 419 420 /* 421 * With RRIP we must use the `.' entry of the root directory. 422 * Simply tell vget, that it's a relocated directory. 423 */ 424 return (cd9660_vget_internal(mp, ino, vpp, 425 imp->iso_ftype == ISO_FTYPE_RRIP, dp)); 426 } 427 428 /* 429 * Do operations associated with quotas, not supported 430 */ 431 /* ARGSUSED */ 432 int 433 cd9660_quotactl(mp, cmd, uid, arg, p) 434 struct mount *mp; 435 int cmd; 436 uid_t uid; 437 caddr_t arg; 438 struct proc *p; 439 { 440 441 return (EOPNOTSUPP); 442 } 443 444 /* 445 * Get file system statistics. 446 */ 447 cd9660_statfs(mp, sbp, p) 448 struct mount *mp; 449 register struct statfs *sbp; 450 struct proc *p; 451 { 452 register struct iso_mnt *isomp; 453 register struct fs *fs; 454 455 isomp = VFSTOISOFS(mp); 456 457 sbp->f_type = MOUNT_CD9660; 458 sbp->f_bsize = isomp->logical_block_size; 459 sbp->f_iosize = sbp->f_bsize; /* XXX */ 460 sbp->f_blocks = isomp->volume_space_size; 461 sbp->f_bfree = 0; /* total free blocks */ 462 sbp->f_bavail = 0; /* blocks free for non superuser */ 463 sbp->f_files = 0; /* total files */ 464 sbp->f_ffree = 0; /* free file nodes */ 465 if (sbp != &mp->mnt_stat) { 466 bcopy((caddr_t)mp->mnt_stat.f_mntonname, 467 (caddr_t)&sbp->f_mntonname[0], MNAMELEN); 468 bcopy((caddr_t)mp->mnt_stat.f_mntfromname, 469 (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); 470 } 471 /* Use the first spare for flags: */ 472 sbp->f_spare[0] = isomp->im_flags; 473 return 0; 474 } 475 476 /* ARGSUSED */ 477 int 478 cd9660_sync(mp, waitfor, cred, p) 479 struct mount *mp; 480 int waitfor; 481 struct ucred *cred; 482 struct proc *p; 483 { 484 return (0); 485 } 486 487 /* 488 * File handle to vnode 489 * 490 * Have to be really careful about stale file handles: 491 * - check that the inode number is in range 492 * - call iget() to get the locked inode 493 * - check for an unallocated inode (i_mode == 0) 494 * - check that the generation number matches 495 */ 496 497 struct ifid { 498 ushort ifid_len; 499 ushort ifid_pad; 500 int ifid_ino; 501 long ifid_start; 502 }; 503 504 /* ARGSUSED */ 505 int 506 cd9660_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) 507 register struct mount *mp; 508 struct fid *fhp; 509 struct mbuf *nam; 510 struct vnode **vpp; 511 int *exflagsp; 512 struct ucred **credanonp; 513 { 514 struct ifid *ifhp = (struct ifid *)fhp; 515 register struct iso_node *ip; 516 register struct netcred *np; 517 register struct iso_mnt *imp = VFSTOISOFS(mp); 518 struct vnode *nvp; 519 int error; 520 521 #ifdef ISOFS_DBG 522 printf("fhtovp: ino %d, start %ld\n", 523 ifhp->ifid_ino, ifhp->ifid_start); 524 #endif 525 526 /* 527 * Get the export permission structure for this <mp, client> tuple. 528 */ 529 np = vfs_export_lookup(mp, &imp->im_export, nam); 530 if (np == NULL) 531 return (EACCES); 532 533 if (error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) { 534 *vpp = NULLVP; 535 return (error); 536 } 537 ip = VTOI(nvp); 538 if (ip->inode.iso_mode == 0) { 539 vput(nvp); 540 *vpp = NULLVP; 541 return (ESTALE); 542 } 543 *vpp = nvp; 544 *exflagsp = np->netc_exflags; 545 *credanonp = &np->netc_anon; 546 return (0); 547 } 548 549 int 550 cd9660_vget(mp, ino, vpp) 551 struct mount *mp; 552 ino_t ino; 553 struct vnode **vpp; 554 { 555 556 /* 557 * XXXX 558 * It would be nice if we didn't always set the `relocated' flag 559 * and force the extra read, but I don't want to think about fixing 560 * that right now. 561 */ 562 return (cd9660_vget_internal(mp, ino, vpp, 563 #if 0 564 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, 565 #else 566 0, 567 #endif 568 (struct iso_directory_entry *)0)); 569 } 570 571 int 572 cd9660_vget_internal(mp, ino, vpp, relocated, isodir) 573 struct mount *mp; 574 ino_t ino; 575 struct vnode **vpp; 576 int relocated; 577 struct iso_directory_record *isodir; 578 { 579 register struct iso_mnt *imp; 580 struct iso_node *ip; 581 struct buf *bp; 582 struct vnode *vp, *nvp; 583 dev_t dev; 584 int error; 585 586 imp = VFSTOISOFS(mp); 587 dev = imp->im_dev; 588 if ((*vpp = cd9660_ihashget(dev, ino)) != NULLVP) 589 return (0); 590 591 /* Allocate a new vnode/iso_node. */ 592 if (error = getnewvnode(VT_ISOFS, mp, cd9660_vnodeop_p, &vp)) { 593 *vpp = NULLVP; 594 return (error); 595 } 596 MALLOC(ip, struct iso_node *, sizeof(struct iso_node), M_ISOFSNODE, 597 M_WAITOK); 598 bzero((caddr_t)ip, sizeof(struct iso_node)); 599 vp->v_data = ip; 600 ip->i_vnode = vp; 601 ip->i_dev = dev; 602 ip->i_number = ino; 603 604 /* 605 * Put it onto its hash chain and lock it so that other requests for 606 * this inode will block if they arrive while we are sleeping waiting 607 * for old data structures to be purged or for the contents of the 608 * disk portion of this inode to be read. 609 */ 610 cd9660_ihashins(ip); 611 612 if (isodir == 0) { 613 int lbn, off; 614 615 lbn = iso_lblkno(imp, ino); 616 if (lbn >= imp->volume_space_size) { 617 vput(vp); 618 printf("fhtovp: lbn exceed volume space %d\n", lbn); 619 return (ESTALE); 620 } 621 622 off = iso_blkoff(imp, ino); 623 if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) { 624 vput(vp); 625 printf("fhtovp: crosses block boundary %d\n", 626 off + ISO_DIRECTORY_RECORD_SIZE); 627 return (ESTALE); 628 } 629 630 error = bread(imp->im_devvp, 631 btodb(lbn * imp->logical_block_size), 632 imp->logical_block_size, NOCRED, &bp); 633 if (error) { 634 vput(vp); 635 brelse(bp); 636 printf("fhtovp: bread error %d\n",error); 637 return (error); 638 } 639 isodir = (struct iso_directory_record *)(bp->b_data + off); 640 641 if (off + isonum_711(isodir->length) > 642 imp->logical_block_size) { 643 vput(vp); 644 if (bp != 0) 645 brelse(bp); 646 printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n", 647 off +isonum_711(isodir->length), off, 648 isonum_711(isodir->length)); 649 return (ESTALE); 650 } 651 652 #if 0 653 if (isonum_733(isodir->extent) + 654 isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) { 655 if (bp != 0) 656 brelse(bp); 657 printf("fhtovp: file start miss %d vs %d\n", 658 isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length), 659 ifhp->ifid_start); 660 return (ESTALE); 661 } 662 #endif 663 } else 664 bp = 0; 665 666 ip->i_mnt = imp; 667 ip->i_devvp = imp->im_devvp; 668 VREF(ip->i_devvp); 669 670 if (relocated) { 671 /* 672 * On relocated directories we must 673 * read the `.' entry out of a dir. 674 */ 675 ip->iso_start = ino >> imp->im_bshift; 676 if (bp != 0) 677 brelse(bp); 678 if (error = iso_blkatoff(ip, 0, &bp)) { 679 vput(vp); 680 return (error); 681 } 682 isodir = (struct iso_directory_record *)bp->b_data; 683 } 684 685 ip->iso_extent = isonum_733(isodir->extent); 686 ip->i_size = isonum_733(isodir->size); 687 ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent; 688 689 /* 690 * Setup time stamp, attribute 691 */ 692 vp->v_type = VNON; 693 switch (imp->iso_ftype) { 694 default: /* ISO_FTYPE_9660 */ 695 { 696 struct buf *bp2; 697 if ((imp->im_flags & ISOFSMNT_EXTATT) 698 && isonum_711(isodir->ext_attr_length)) 699 iso_blkatoff(ip, -isonum_711(isodir->ext_attr_length), 700 &bp2); 701 cd9660_defattr(isodir, ip, bp2); 702 cd9660_deftstamp(isodir, ip, bp2); 703 brelse(bp2); 704 break; 705 } 706 case ISO_FTYPE_RRIP: 707 cd9660_rrip_analyze(isodir, ip, imp); 708 break; 709 } 710 711 if (bp != 0) 712 brelse(bp); 713 714 /* 715 * Initialize the associated vnode 716 */ 717 switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) { 718 case VFIFO: 719 #ifdef FIFO 720 vp->v_op = cd9660_fifoop_p; 721 break; 722 #else 723 vput(vp); 724 return (EOPNOTSUPP); 725 #endif /* FIFO */ 726 case VCHR: 727 case VBLK: 728 /* 729 * if device, look at device number table for translation 730 */ 731 #ifdef ISODEVMAP 732 if (dp = iso_dmap(dev, ino, 0)) 733 ip->inode.iso_rdev = dp->d_dev; 734 #endif 735 vp->v_op = cd9660_specop_p; 736 if (nvp = checkalias(vp, ip->inode.iso_rdev, mp)) { 737 /* 738 * Discard unneeded vnode, but save its iso_node. 739 */ 740 cd9660_ihashrem(ip); 741 VOP_UNLOCK(vp); 742 nvp->v_data = vp->v_data; 743 vp->v_data = NULL; 744 vp->v_op = spec_vnodeop_p; 745 vrele(vp); 746 vgone(vp); 747 /* 748 * Reinitialize aliased inode. 749 */ 750 vp = nvp; 751 ip->i_vnode = vp; 752 cd9660_ihashins(ip); 753 } 754 break; 755 } 756 757 if (ip->iso_extent == imp->root_extent) 758 vp->v_flag |= VROOT; 759 760 /* 761 * XXX need generation number? 762 */ 763 764 *vpp = vp; 765 return (0); 766 } 767 768 /* 769 * Vnode pointer to File handle 770 */ 771 /* ARGSUSED */ 772 cd9660_vptofh(vp, fhp) 773 struct vnode *vp; 774 struct fid *fhp; 775 { 776 register struct iso_node *ip = VTOI(vp); 777 register struct ifid *ifhp; 778 register struct iso_mnt *mp = ip->i_mnt; 779 780 ifhp = (struct ifid *)fhp; 781 ifhp->ifid_len = sizeof(struct ifid); 782 783 ifhp->ifid_ino = ip->i_number; 784 ifhp->ifid_start = ip->iso_start; 785 786 #ifdef ISOFS_DBG 787 printf("vptofh: ino %d, start %ld\n", 788 ifhp->ifid_ino,ifhp->ifid_start); 789 #endif 790 return 0; 791 } 792