/*- * Copyright (c) 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension * Support code is derived from software contributed to Berkeley * by Atsushi Murai (amurai@spec.co.jp). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)cd9660_vfsops.c 8.18 (Berkeley) 5/22/95 * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MALLOC_DEFINE(M_ISOFSMNT, "ISOFS mount", "ISOFS mount structure"); MALLOC_DEFINE(M_ISOFSNODE, "ISOFS node", "ISOFS vnode private part"); static int cd9660_mount __P((struct mount *, char *, caddr_t, struct nameidata *, struct proc *)); static int cd9660_unmount __P((struct mount *, int, struct proc *)); static int cd9660_root __P((struct mount *, struct vnode **)); static int cd9660_statfs __P((struct mount *, struct statfs *, struct proc *)); static int cd9660_vget __P((struct mount *, ino_t, struct vnode **)); static int cd9660_fhtovp __P((struct mount *, struct fid *, struct vnode **)); static int cd9660_checkexp __P((struct mount *, struct sockaddr *, int *, struct ucred **)); static int cd9660_vptofh __P((struct vnode *, struct fid *)); static struct vfsops cd9660_vfsops = { cd9660_mount, vfs_stdstart, cd9660_unmount, cd9660_root, vfs_stdquotactl, cd9660_statfs, vfs_stdsync, cd9660_vget, cd9660_fhtovp, cd9660_checkexp, cd9660_vptofh, cd9660_init, cd9660_uninit, vfs_stdextattrctl, }; VFS_SET(cd9660_vfsops, cd9660, VFCF_READONLY); /* * Called by vfs_mountroot when iso is going to be mounted as root. */ static int iso_get_ssector __P((dev_t dev, struct proc *p)); static int iso_mountfs __P((struct vnode *devvp, struct mount *mp, struct proc *p, struct iso_args *argp)); /* * Try to find the start of the last data track on this CD-ROM. This * is used to mount the last session of a multi-session CD. Bail out * and return 0 if we fail, this is always a safe bet. */ static int iso_get_ssector(dev, p) dev_t dev; struct proc *p; { struct ioc_toc_header h; struct ioc_read_toc_single_entry t; int i; struct cdevsw *bd; d_ioctl_t *ioctlp; bd = devsw(dev); ioctlp = bd->d_ioctl; if (ioctlp == NULL) return 0; if (ioctlp(dev, CDIOREADTOCHEADER, (caddr_t)&h, FREAD, p) != 0) return 0; for (i = h.ending_track; i >= 0; i--) { t.address_format = CD_LBA_FORMAT; t.track = i; if (ioctlp(dev, CDIOREADTOCENTRY, (caddr_t)&t, FREAD, p) != 0) return 0; if ((t.entry.control & 4) != 0) /* found a data track */ break; } if (i < 0) return 0; return ntohl(t.entry.addr.lba); } static int iso_mountroot __P((struct mount *mp, struct proc *p)); static int iso_mountroot(mp, p) struct mount *mp; struct proc *p; { struct iso_args args; int error; if ((error = bdevvp(rootdev, &rootvp))) { printf("iso_mountroot: can't find rootvp\n"); return (error); } args.flags = ISOFSMNT_ROOT; args.ssector = iso_get_ssector(rootdev, p); if (bootverbose) printf("iso_mountroot(): using session at block %d\n", args.ssector); if ((error = iso_mountfs(rootvp, mp, p, &args)) != 0) return (error); (void)cd9660_statfs(mp, &mp->mnt_stat, p); return (0); } /* * VFS Operations. * * mount system call */ static int cd9660_mount(mp, path, data, ndp, p) register struct mount *mp; char *path; caddr_t data; struct nameidata *ndp; struct proc *p; { struct vnode *devvp; struct iso_args args; size_t size; int error; mode_t accessmode; struct iso_mnt *imp = 0; if ((mp->mnt_flag & MNT_ROOTFS) != 0) { return (iso_mountroot(mp, p)); } if ((error = copyin(data, (caddr_t)&args, sizeof (struct iso_args)))) return (error); if ((mp->mnt_flag & MNT_RDONLY) == 0) return (EROFS); /* * If updating, check whether changing from read-only to * read/write; if there is no device name, that's all we do. */ if (mp->mnt_flag & MNT_UPDATE) { imp = VFSTOISOFS(mp); if (args.fspec == 0) return (vfs_export(mp, &imp->im_export, &args.export)); } /* * Not an update, or updating the name: look up the name * and verify that it refers to a sensible block device. */ NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); if ((error = namei(ndp))) return (error); NDFREE(ndp, NDF_ONLY_PNBUF); devvp = ndp->ni_vp; if (!vn_isdisk(devvp, &error)) { vrele(devvp); return (error); } /* * Verify that user has necessary permissions on the device, * or has superuser abilities */ accessmode = VREAD; vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p); if (error) error = suser(p); if (error) { vput(devvp); return (error); } VOP_UNLOCK(devvp, 0, p); if ((mp->mnt_flag & MNT_UPDATE) == 0) { error = iso_mountfs(devvp, mp, p, &args); } else { if (devvp != imp->im_devvp) error = EINVAL; /* needs translation */ else vrele(devvp); } if (error) { vrele(devvp); return error; } imp = VFSTOISOFS(mp); (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); (void) cd9660_statfs(mp, &mp->mnt_stat, p); return 0; } /* * Common code for mount and mountroot */ static int iso_mountfs(devvp, mp, p, argp) register struct vnode *devvp; struct mount *mp; struct proc *p; struct iso_args *argp; { register struct iso_mnt *isomp = (struct iso_mnt *)0; struct buf *bp = NULL; struct buf *pribp = NULL, *supbp = NULL; dev_t dev = devvp->v_rdev; int error = EINVAL; int needclose = 0; int high_sierra = 0; int iso_bsize; int iso_blknum; int joliet_level; struct iso_volume_descriptor *vdp = 0; struct iso_primary_descriptor *pri = NULL; struct iso_sierra_primary_descriptor *pri_sierra = NULL; struct iso_supplementary_descriptor *sup = NULL; struct iso_directory_record *rootp; int logical_block_size; if (!(mp->mnt_flag & MNT_RDONLY)) return EROFS; /* * Disallow multiple mounts of the same device. * Disallow mounting of a device that is currently in use * (except for root, which might share swap device for miniroot). * Flush out any old buffers remaining from a previous use. */ if ((error = vfs_mountedon(devvp))) return error; if (vcount(devvp) > 1 && devvp != rootvp) return EBUSY; if ((error = vinvalbuf(devvp, V_SAVE, p->p_ucred, p, 0, 0))) return (error); vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); error = VOP_OPEN(devvp, FREAD, FSCRED, p); VOP_UNLOCK(devvp, 0, p); if (error) return error; needclose = 1; /* This is the "logical sector size". The standard says this * should be 2048 or the physical sector size on the device, * whichever is greater. For now, we'll just use a constant. */ iso_bsize = ISO_DEFAULT_BLOCK_SIZE; joliet_level = 0; for (iso_blknum = 16 + argp->ssector; iso_blknum < 100 + argp->ssector; iso_blknum++) { if ((error = bread(devvp, iso_blknum * btodb(iso_bsize), iso_bsize, NOCRED, &bp)) != 0) goto out; vdp = (struct iso_volume_descriptor *)bp->b_data; if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) { if (bcmp (vdp->id_sierra, ISO_SIERRA_ID, sizeof vdp->id) != 0) { error = EINVAL; goto out; } else high_sierra = 1; } switch (isonum_711 (high_sierra? vdp->type_sierra: vdp->type)){ case ISO_VD_PRIMARY: if (pribp == NULL) { pribp = bp; bp = NULL; pri = (struct iso_primary_descriptor *)vdp; pri_sierra = (struct iso_sierra_primary_descriptor *)vdp; } break; case ISO_VD_SUPPLEMENTARY: if (supbp == NULL) { supbp = bp; bp = NULL; sup = (struct iso_supplementary_descriptor *)vdp; if (!(argp->flags & ISOFSMNT_NOJOLIET)) { if (bcmp(sup->escape, "%/@", 3) == 0) joliet_level = 1; if (bcmp(sup->escape, "%/C", 3) == 0) joliet_level = 2; if (bcmp(sup->escape, "%/E", 3) == 0) joliet_level = 3; if (isonum_711 (sup->flags) & 1) joliet_level = 0; } } break; case ISO_VD_END: goto vd_end; default: break; } if (bp) { brelse(bp); bp = NULL; } } vd_end: if (bp) { brelse(bp); bp = NULL; } if (pri == NULL) { error = EINVAL; goto out; } logical_block_size = isonum_723 (high_sierra? pri_sierra->logical_block_size: pri->logical_block_size); if (logical_block_size < DEV_BSIZE || logical_block_size > MAXBSIZE || (logical_block_size & (logical_block_size - 1)) != 0) { error = EINVAL; goto out; } rootp = (struct iso_directory_record *) (high_sierra? pri_sierra->root_directory_record: pri->root_directory_record); isomp = malloc(sizeof *isomp, M_ISOFSMNT, M_WAITOK); bzero((caddr_t)isomp, sizeof *isomp); isomp->logical_block_size = logical_block_size; isomp->volume_space_size = isonum_733 (high_sierra? pri_sierra->volume_space_size: pri->volume_space_size); isomp->joliet_level = 0; /* * Since an ISO9660 multi-session CD can also access previous * sessions, we have to include them into the space consider- * ations. This doesn't yield a very accurate number since * parts of the old sessions might be inaccessible now, but we * can't do much better. This is also important for the NFS * filehandle validation. */ isomp->volume_space_size += argp->ssector; bcopy (rootp, isomp->root, sizeof isomp->root); isomp->root_extent = isonum_733 (rootp->extent); isomp->root_size = isonum_733 (rootp->size); isomp->im_bmask = logical_block_size - 1; isomp->im_bshift = ffs(logical_block_size) - 1; pribp->b_flags |= B_AGE; brelse(pribp); pribp = NULL; mp->mnt_data = (qaddr_t)isomp; mp->mnt_stat.f_fsid.val[0] = dev2udev(dev); mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; mp->mnt_maxsymlinklen = 0; mp->mnt_flag |= MNT_LOCAL; isomp->im_mountp = mp; isomp->im_dev = dev; isomp->im_devvp = devvp; devvp->v_specmountpoint = mp; /* Check the Rock Ridge Extention support */ if (!(argp->flags & ISOFSMNT_NORRIP)) { if ((error = bread(isomp->im_devvp, (isomp->root_extent + isonum_711(rootp->ext_attr_length)) << (isomp->im_bshift - DEV_BSHIFT), isomp->logical_block_size, NOCRED, &bp)) != 0) goto out; rootp = (struct iso_directory_record *)bp->b_data; if ((isomp->rr_skip = cd9660_rrip_offset(rootp,isomp)) < 0) { argp->flags |= ISOFSMNT_NORRIP; } else { argp->flags &= ~ISOFSMNT_GENS; } /* * The contents are valid, * but they will get reread as part of another vnode, so... */ bp->b_flags |= B_AGE; brelse(bp); bp = NULL; } isomp->im_flags = argp->flags & (ISOFSMNT_NORRIP | ISOFSMNT_GENS | ISOFSMNT_EXTATT | ISOFSMNT_NOJOLIET); if (high_sierra) { /* this effectively ignores all the mount flags */ log(LOG_INFO, "cd9660: High Sierra Format\n"); isomp->iso_ftype = ISO_FTYPE_HIGH_SIERRA; } else switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) { default: isomp->iso_ftype = ISO_FTYPE_DEFAULT; break; case ISOFSMNT_GENS|ISOFSMNT_NORRIP: isomp->iso_ftype = ISO_FTYPE_9660; break; case 0: log(LOG_INFO, "cd9660: RockRidge Extension\n"); isomp->iso_ftype = ISO_FTYPE_RRIP; break; } /* Decide whether to use the Joliet descriptor */ if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) { log(LOG_INFO, "cd9660: Joliet Extension\n"); rootp = (struct iso_directory_record *) sup->root_directory_record; bcopy (rootp, isomp->root, sizeof isomp->root); isomp->root_extent = isonum_733 (rootp->extent); isomp->root_size = isonum_733 (rootp->size); isomp->joliet_level = joliet_level; supbp->b_flags |= B_AGE; } if (supbp) { brelse(supbp); supbp = NULL; } return 0; out: devvp->v_specmountpoint = NULL; if (bp) brelse(bp); if (pribp) brelse(pribp); if (supbp) brelse(supbp); if (needclose) (void)VOP_CLOSE(devvp, FREAD, NOCRED, p); if (isomp) { free((caddr_t)isomp, M_ISOFSMNT); mp->mnt_data = (qaddr_t)0; } return error; } /* * unmount system call */ static int cd9660_unmount(mp, mntflags, p) struct mount *mp; int mntflags; struct proc *p; { register struct iso_mnt *isomp; int error, flags = 0; if (mntflags & MNT_FORCE) flags |= FORCECLOSE; #if 0 mntflushbuf(mp, 0); if (mntinvalbuf(mp)) return EBUSY; #endif if ((error = vflush(mp, NULLVP, flags))) return (error); isomp = VFSTOISOFS(mp); isomp->im_devvp->v_specmountpoint = NULL; error = VOP_CLOSE(isomp->im_devvp, FREAD, NOCRED, p); vrele(isomp->im_devvp); free((caddr_t)isomp, M_ISOFSMNT); mp->mnt_data = (qaddr_t)0; mp->mnt_flag &= ~MNT_LOCAL; return (error); } /* * Return root of a filesystem */ static int cd9660_root(mp, vpp) struct mount *mp; struct vnode **vpp; { struct iso_mnt *imp = VFSTOISOFS(mp); struct iso_directory_record *dp = (struct iso_directory_record *)imp->root; ino_t ino = isodirino(dp, imp); /* * With RRIP we must use the `.' entry of the root directory. * Simply tell vget, that it's a relocated directory. */ return (cd9660_vget_internal(mp, ino, vpp, imp->iso_ftype == ISO_FTYPE_RRIP, dp)); } /* * Get file system statistics. */ int cd9660_statfs(mp, sbp, p) struct mount *mp; register struct statfs *sbp; struct proc *p; { register struct iso_mnt *isomp; isomp = VFSTOISOFS(mp); sbp->f_bsize = isomp->logical_block_size; sbp->f_iosize = sbp->f_bsize; /* XXX */ sbp->f_blocks = isomp->volume_space_size; sbp->f_bfree = 0; /* total free blocks */ sbp->f_bavail = 0; /* blocks free for non superuser */ sbp->f_files = 0; /* total files */ sbp->f_ffree = 0; /* free file nodes */ if (sbp != &mp->mnt_stat) { sbp->f_type = mp->mnt_vfc->vfc_typenum; bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); } return 0; } /* * File handle to vnode * * Have to be really careful about stale file handles: * - check that the inode number is in range * - call iget() to get the locked inode * - check for an unallocated inode (i_mode == 0) * - check that the generation number matches */ struct ifid { ushort ifid_len; ushort ifid_pad; int ifid_ino; long ifid_start; }; /* ARGSUSED */ int cd9660_fhtovp(mp, fhp, vpp) register struct mount *mp; struct fid *fhp; struct vnode **vpp; { struct ifid *ifhp = (struct ifid *)fhp; register struct iso_node *ip; struct vnode *nvp; int error; #ifdef ISOFS_DBG printf("fhtovp: ino %d, start %ld\n", ifhp->ifid_ino, ifhp->ifid_start); #endif if ((error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) != 0) { *vpp = NULLVP; return (error); } ip = VTOI(nvp); if (ip->inode.iso_mode == 0) { vput(nvp); *vpp = NULLVP; return (ESTALE); } *vpp = nvp; return (0); } int cd9660_checkexp(mp, nam, exflagsp, credanonp) struct mount *mp; struct sockaddr *nam; int *exflagsp; struct ucred **credanonp; { register struct netcred *np; register struct iso_mnt *imp; imp = VFSTOISOFS(mp); /* * Get the export permission structure for this tuple. */ np = vfs_export_lookup(mp, &imp->im_export, nam); if (np == NULL) return (EACCES); *exflagsp = np->netc_exflags; *credanonp = &np->netc_anon; return (0); } int cd9660_vget(mp, ino, vpp) struct mount *mp; ino_t ino; struct vnode **vpp; { /* * XXXX * It would be nice if we didn't always set the `relocated' flag * and force the extra read, but I don't want to think about fixing * that right now. */ return (cd9660_vget_internal(mp, ino, vpp, #if 0 VFSTOISOFS(mp)->iso_ftype == ISO_FTYPE_RRIP, #else 0, #endif (struct iso_directory_record *)0)); } int cd9660_vget_internal(mp, ino, vpp, relocated, isodir) struct mount *mp; ino_t ino; struct vnode **vpp; int relocated; struct iso_directory_record *isodir; { struct iso_mnt *imp; struct iso_node *ip; struct buf *bp; struct vnode *vp; dev_t dev; int error; imp = VFSTOISOFS(mp); dev = imp->im_dev; if ((*vpp = cd9660_ihashget(dev, ino)) != NULLVP) return (0); /* Allocate a new vnode/iso_node. */ if ((error = getnewvnode(VT_ISOFS, mp, cd9660_vnodeop_p, &vp)) != 0) { *vpp = NULLVP; return (error); } MALLOC(ip, struct iso_node *, sizeof(struct iso_node), M_ISOFSNODE, M_WAITOK); bzero((caddr_t)ip, sizeof(struct iso_node)); lockinit(&ip->i_lock, PINOD, "isonode", 0, 0); vp->v_data = ip; ip->i_vnode = vp; ip->i_dev = dev; ip->i_number = ino; /* * Put it onto its hash chain and lock it so that other requests for * this inode will block if they arrive while we are sleeping waiting * for old data structures to be purged or for the contents of the * disk portion of this inode to be read. */ cd9660_ihashins(ip); if (isodir == 0) { int lbn, off; lbn = lblkno(imp, ino); if (lbn >= imp->volume_space_size) { vput(vp); printf("fhtovp: lbn exceed volume space %d\n", lbn); return (ESTALE); } off = blkoff(imp, ino); if (off + ISO_DIRECTORY_RECORD_SIZE > imp->logical_block_size) { vput(vp); printf("fhtovp: crosses block boundary %d\n", off + ISO_DIRECTORY_RECORD_SIZE); return (ESTALE); } error = bread(imp->im_devvp, lbn << (imp->im_bshift - DEV_BSHIFT), imp->logical_block_size, NOCRED, &bp); if (error) { vput(vp); brelse(bp); printf("fhtovp: bread error %d\n",error); return (error); } isodir = (struct iso_directory_record *)(bp->b_data + off); if (off + isonum_711(isodir->length) > imp->logical_block_size) { vput(vp); if (bp != 0) brelse(bp); printf("fhtovp: directory crosses block boundary %d[off=%d/len=%d]\n", off +isonum_711(isodir->length), off, isonum_711(isodir->length)); return (ESTALE); } #if 0 if (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) { if (bp != 0) brelse(bp); printf("fhtovp: file start miss %d vs %d\n", isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length), ifhp->ifid_start); return (ESTALE); } #endif } else bp = 0; ip->i_mnt = imp; ip->i_devvp = imp->im_devvp; VREF(ip->i_devvp); if (relocated) { /* * On relocated directories we must * read the `.' entry out of a dir. */ ip->iso_start = ino >> imp->im_bshift; if (bp != 0) brelse(bp); if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) { vput(vp); return (error); } isodir = (struct iso_directory_record *)bp->b_data; } ip->iso_extent = isonum_733(isodir->extent); ip->i_size = isonum_733(isodir->size); ip->iso_start = isonum_711(isodir->ext_attr_length) + ip->iso_extent; /* * Setup time stamp, attribute */ vp->v_type = VNON; switch (imp->iso_ftype) { default: /* ISO_FTYPE_9660 */ { struct buf *bp2; int off; if ((imp->im_flags & ISOFSMNT_EXTATT) && (off = isonum_711(isodir->ext_attr_length))) cd9660_blkatoff(vp, (off_t)-(off << imp->im_bshift), NULL, &bp2); else bp2 = NULL; cd9660_defattr(isodir, ip, bp2, ISO_FTYPE_9660); cd9660_deftstamp(isodir, ip, bp2, ISO_FTYPE_9660); if (bp2) brelse(bp2); break; } case ISO_FTYPE_RRIP: cd9660_rrip_analyze(isodir, ip, imp); break; } if (bp != 0) brelse(bp); /* * Initialize the associated vnode */ switch (vp->v_type = IFTOVT(ip->inode.iso_mode)) { case VFIFO: vp->v_op = cd9660_fifoop_p; break; case VCHR: case VBLK: vp->v_op = cd9660_specop_p; vp = addaliasu(vp, ip->inode.iso_rdev); ip->i_vnode = vp; break; default: break; } if (ip->iso_extent == imp->root_extent) vp->v_flag |= VROOT; /* * XXX need generation number? */ *vpp = vp; return (0); } /* * Vnode pointer to File handle */ /* ARGSUSED */ int cd9660_vptofh(vp, fhp) struct vnode *vp; struct fid *fhp; { register struct iso_node *ip = VTOI(vp); register struct ifid *ifhp; ifhp = (struct ifid *)fhp; ifhp->ifid_len = sizeof(struct ifid); ifhp->ifid_ino = ip->i_number; ifhp->ifid_start = ip->iso_start; #ifdef ISOFS_DBG printf("vptofh: ino %d, start %ld\n", ifhp->ifid_ino,ifhp->ifid_start); #endif return 0; }