initial import of NetBSD tree

1 files changed, 818 insertions, 0 deletions

diff --git a/sys/isofs/cd9660/cd9660_vfsops.c b/sys/isofs/cd9660/cd9660_vfsops.c
new file mode 100644
index 00000000000..9bd974daac2
--- /dev/null
+++ b/sys/isofs/cd9660/cd9660_vfsops.c
@@ -0,0 +1,818 @@
+/*	$NetBSD: cd9660_vfsops.c,v 1.19 1995/06/18 14:47:01 cgd Exp $	*/
+
+/*-
+ * 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	8.9 (Berkeley) 12/5/94
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/vnode.h>
+#include <miscfs/specfs/specdev.h>
+#include <sys/mount.h>
+#include <sys/buf.h>
+#include <sys/file.h>
+#include <sys/disklabel.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/stat.h>
+
+#include <isofs/cd9660/iso.h>
+#include <isofs/cd9660/iso_rrip.h>
+#include <isofs/cd9660/cd9660_node.h>
+
+extern int enodev ();
+
+struct vfsops cd9660_vfsops = {
+	MOUNT_CD9660,
+	cd9660_mount,
+	cd9660_start,
+	cd9660_unmount,
+	cd9660_root,
+	cd9660_quotactl,
+	cd9660_statfs,
+	cd9660_sync,
+	cd9660_vget,
+	cd9660_fhtovp,
+	cd9660_vptofh,
+	cd9660_init,
+};
+
+/*
+ * Called by vfs_mountroot when iso is going to be mounted as root.
+ *
+ * Name is updated by mount(8) after booting.
+ */
+#define ROOTNAME	"root_device"
+
+static int iso_mountfs __P((struct vnode *devvp, struct mount *mp,
+		struct proc *p, struct iso_args *argp));
+
+int
+cd9660_mountroot()
+{
+	register struct mount *mp;
+	extern struct vnode *rootvp;
+	struct proc *p = curproc;	/* XXX */
+	struct iso_mnt *imp;
+	register struct fs *fs;
+	size_t size;
+	int error;
+	struct iso_args args;
+	
+	/*
+	 * Get vnodes for swapdev and rootdev.
+	 */
+	if (bdevvp(swapdev, &swapdev_vp) || bdevvp(rootdev, &rootvp))
+		panic("cd9660_mountroot: can't setup bdevvp's");
+
+	mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK);
+	bzero((char *)mp, (u_long)sizeof(struct mount));
+	mp->mnt_op = &cd9660_vfsops;
+	mp->mnt_flag = MNT_RDONLY;
+	LIST_INIT(&mp->mnt_vnodelist);
+	args.flags = ISOFSMNT_ROOT;
+	if (error = iso_mountfs(rootvp, mp, p, &args)) {
+		free(mp, M_MOUNT);
+		return (error);
+	}
+	if (error = vfs_lock(mp)) {
+		(void)cd9660_unmount(mp, 0, p);
+		free(mp, M_MOUNT);
+		return (error);
+	}
+	CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
+	mp->mnt_vnodecovered = NULLVP;
+	imp = VFSTOISOFS(mp);
+	(void) copystr("/", mp->mnt_stat.f_mntonname, MNAMELEN - 1,
+	    &size);
+	bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
+	(void) copystr(ROOTNAME, 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);
+	vfs_unlock(mp);
+	return (0);
+}
+
+/*
+ * VFS Operations.
+ *
+ * mount system call
+ */
+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;
+	struct iso_mnt *imp;
+	
+	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);
+	devvp = ndp->ni_vp;
+
+	if (devvp->v_type != VBLK) {
+		vrele(devvp);
+		return ENOTBLK;
+	}
+	if (major(devvp->v_rdev) >= nblkdev) {
+		vrele(devvp);
+		return ENXIO;
+	}
+	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);
+	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;
+	dev_t dev = devvp->v_rdev;
+	int error = EINVAL, i, size;
+	int needclose = 0;
+	int ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
+	extern struct vnode *rootvp;
+	int iso_bsize;
+	int iso_blknum;
+	struct iso_volume_descriptor *vdp;
+	struct iso_primary_descriptor *pri;
+	struct iso_directory_record *rootp;
+	int logical_block_size;
+	
+	if (!ronly)
+		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);
+
+	if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p))
+		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;
+	
+	for (iso_blknum = 16; iso_blknum < 100; iso_blknum++) {
+		if (error = bread(devvp, iso_blknum * btodb(iso_bsize),
+				  iso_bsize, NOCRED, &bp))
+			goto out;
+		
+		vdp = (struct iso_volume_descriptor *)bp->b_data;
+		if (bcmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) != 0) {
+			error = EINVAL;
+			goto out;
+		}
+		
+		if (isonum_711 (vdp->type) == ISO_VD_END) {
+			error = EINVAL;
+			goto out;
+		}
+		
+		if (isonum_711 (vdp->type) == ISO_VD_PRIMARY)
+			break;
+		brelse(bp);
+	}
+	
+	if (isonum_711 (vdp->type) != ISO_VD_PRIMARY) {
+		error = EINVAL;
+		goto out;
+	}
+	
+	pri = (struct iso_primary_descriptor *)vdp;
+	
+	logical_block_size = isonum_723 (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 *)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 (pri->volume_space_size);
+	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 = 0;
+	while ((1 << isomp->im_bshift) < isomp->logical_block_size)
+		isomp->im_bshift++;
+	
+	bp->b_flags |= B_AGE;
+	brelse(bp);
+	bp = NULL;
+	
+	mp->mnt_data = (qaddr_t)isomp;
+	mp->mnt_stat.f_fsid.val[0] = (long)dev;
+	mp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_CD9660);
+	mp->mnt_maxsymlinklen = 0;
+	mp->mnt_flag |= MNT_LOCAL;
+	isomp->im_mountp = mp;
+	isomp->im_dev = dev;
+	isomp->im_devvp = devvp;
+	
+	devvp->v_specflags |= SI_MOUNTEDON;
+	
+	/* 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))
+		    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);
+	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:
+	    isomp->iso_ftype = ISO_FTYPE_RRIP;
+	    break;
+	}
+	
+	return 0;
+out:
+	if (bp)
+		brelse(bp);
+	if (needclose)
+		(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
+	if (isomp) {
+		free((caddr_t)isomp, M_ISOFSMNT);
+		mp->mnt_data = (qaddr_t)0;
+	}
+	return error;
+}
+
+/*
+ * Make a filesystem operational.
+ * Nothing to do at the moment.
+ */
+/* ARGSUSED */
+int
+cd9660_start(mp, flags, p)
+	struct mount *mp;
+	int flags;
+	struct proc *p;
+{
+	return 0;
+}
+
+/*
+ * unmount system call
+ */
+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);
+
+#ifdef	ISODEVMAP
+	if (isomp->iso_ftype == ISO_FTYPE_RRIP)
+		iso_dunmap(isomp->im_dev);
+#endif
+	
+	isomp->im_devvp->v_specflags &= ~SI_MOUNTEDON;
+	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
+ */
+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));
+}
+
+/*
+ * Do operations associated with quotas, not supported
+ */
+/* ARGSUSED */
+int
+cd9660_quotactl(mp, cmd, uid, arg, p)
+	struct mount *mp;
+	int cmd;
+	uid_t uid;
+	caddr_t arg;
+	struct proc *p;
+{
+
+	return (EOPNOTSUPP);
+}
+
+/*
+ * 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);
+
+#ifdef COMPAT_09
+	sbp->f_type = 5;
+#else
+	sbp->f_type = 0;
+#endif
+	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) {
+		bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
+		bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
+	}
+	strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN);
+	/* Use the first spare for flags: */
+	sbp->f_spare[0] = isomp->im_flags;
+	return 0;
+}
+
+/* ARGSUSED */
+int
+cd9660_sync(mp, waitfor, cred, p)
+	struct mount *mp;
+	int waitfor;
+	struct ucred *cred;
+	struct proc *p;
+{
+	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, nam, vpp, exflagsp, credanonp)
+	register struct mount *mp;
+	struct fid *fhp;
+	struct mbuf *nam;
+	struct vnode **vpp;
+	int *exflagsp;
+	struct ucred **credanonp;
+{
+	struct ifid *ifhp = (struct ifid *)fhp;
+	register struct iso_node *ip;
+	register struct netcred *np;
+	register struct iso_mnt *imp = VFSTOISOFS(mp);
+	struct vnode *nvp;
+	int error;
+	
+#ifdef	ISOFS_DBG
+	printf("fhtovp: ino %d, start %ld\n",
+	       ifhp->ifid_ino, ifhp->ifid_start);
+#endif
+	
+	/*
+	 * Get the export permission structure for this <mp, client> tuple.
+	 */
+	np = vfs_export_lookup(mp, &imp->im_export, nam);
+	if (np == NULL)
+		return (EACCES);
+
+	if (error = VFS_VGET(mp, ifhp->ifid_ino, &nvp)) {
+		*vpp = NULLVP;
+		return (error);
+	}
+	ip = VTOI(nvp);
+	if (ip->inode.iso_mode == 0) {
+		vput(nvp);
+		*vpp = NULLVP;
+		return (ESTALE);
+	}
+	*vpp = nvp;
+	*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_entry *)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;
+{
+	register struct iso_mnt *imp;
+	struct iso_node *ip;
+	struct buf *bp;
+	struct vnode *vp, *nvp;
+	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)) {
+		*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));
+	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 = VOP_BLKATOFF(vp, (off_t)0, NULL, &bp)) {
+			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)))
+			VOP_BLKATOFF(vp, (off_t)-(off << imp->im_bshift), NULL,
+				     &bp2);
+		else
+			bp2 = NULL;
+		cd9660_defattr(isodir, ip, bp2);
+		cd9660_deftstamp(isodir, ip, bp2);
+		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:
+#ifdef	FIFO
+		vp->v_op = cd9660_fifoop_p;
+		break;
+#else
+		vput(vp);
+		return (EOPNOTSUPP);
+#endif	/* FIFO */
+	case VCHR:
+	case VBLK:
+		/*
+		 * if device, look at device number table for translation
+		 */
+#ifdef	ISODEVMAP
+		if (dp = iso_dmap(dev, ino, 0))
+			ip->inode.iso_rdev = dp->d_dev;
+#endif
+		vp->v_op = cd9660_specop_p;
+		if (nvp = checkalias(vp, ip->inode.iso_rdev, mp)) {
+			/*
+			 * Discard unneeded vnode, but save its iso_node.
+			 */
+			cd9660_ihashrem(ip);
+			VOP_UNLOCK(vp);
+			nvp->v_data = vp->v_data;
+			vp->v_data = NULL;
+			vp->v_op = spec_vnodeop_p;
+			vrele(vp);
+			vgone(vp);
+			/*
+			 * Reinitialize aliased inode.
+			 */
+			vp = nvp;
+			ip->i_vnode = vp;
+			cd9660_ihashins(ip);
+		}
+		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;
+}