This commit was manufactured by cvs2svn to create branch 'CSRG'.

3 files changed, 1052 insertions, 0 deletions

diff --git a/sys/dev/vn/vn.c b/sys/dev/vn/vn.c
new file mode 100644
index 0000000..63d0359
--- /dev/null
+++ b/sys/dev/vn/vn.c
@@ -0,0 +1,550 @@
+#define DEBUG 1
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * 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.
+ *
+ * from: Utah Hdr: vn.c 1.13 94/04/02
+ *
+ *	@(#)vn.c	8.6 (Berkeley) 4/1/94
+ */
+
+/*
+ * Vnode disk driver.
+ *
+ * Block/character interface to a vnode.  Allows one to treat a file
+ * as a disk (e.g. build a filesystem in it, mount it, etc.).
+ *
+ * NOTE 1: This uses the VOP_BMAP/VOP_STRATEGY interface to the vnode
+ * instead of a simple VOP_RDWR.  We do this to avoid distorting the
+ * local buffer cache.
+ *
+ * NOTE 2: There is a security issue involved with this driver.
+ * Once mounted all access to the contents of the "mapped" file via
+ * the special file is controlled by the permissions on the special
+ * file, the protection of the mapped file is ignored (effectively,
+ * by using root credentials in all transactions).
+ *
+ * NOTE 3: Doesn't interact with leases, should it?
+ */
+#include "vn.h"
+#if NVN > 0
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/proc.h>
+#include <sys/errno.h>
+#include <sys/dkstat.h>
+#include <sys/buf.h>
+#include <sys/malloc.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/file.h>
+#include <sys/uio.h>
+
+#include <miscfs/specfs/specdev.h>
+
+#include <sys/vnioctl.h>
+
+#ifdef DEBUG
+int dovncluster = 1;
+int vndebug = 0x00;
+#define VDB_FOLLOW	0x01
+#define VDB_INIT	0x02
+#define VDB_IO		0x04
+#endif
+
+#define	vnunit(x)	(minor(x) >> 3)
+
+#define	getvnbuf()	\
+	((struct buf *)malloc(sizeof(struct buf), M_DEVBUF, M_WAITOK))
+
+#define putvnbuf(bp)	\
+	free((caddr_t)(bp), M_DEVBUF)
+
+struct vn_softc {
+	int		 sc_flags;	/* flags */
+	size_t		 sc_size;	/* size of vn */
+	struct vnode	*sc_vp;		/* vnode */
+	struct ucred	*sc_cred;	/* credentials */
+	int		 sc_maxactive;	/* max # of active requests */
+	struct buf	 sc_tab;	/* transfer queue */
+};
+
+/* sc_flags */
+#define VNF_INITED	0x01
+
+struct vn_softc **vn_softc;
+int numvnd;
+
+void	vnattach __P((int num));
+int	vnopen __P((dev_t dev, int flags, int mode, struct proc *p));
+void	vnstrategy __P((struct buf *bp));
+void	vnstart __P((struct vn_softc *vn));
+void	vniodone __P((struct buf *bp));
+int	vnread __P((dev_t dev, struct uio *uio, int flags, struct proc *p));
+int	vnwrite __P((dev_t dev, struct uio *uio, int flags, struct proc *p));
+int	vnioctl __P((dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p));
+int	vnsetcred __P((struct vn_softc *vn, struct ucred *cred));
+void	vnthrottle __P((struct vn_softc *vn, struct vnode *vp));
+void	vnshutdown __P((void));
+void	vnclear __P((struct vn_softc *vn));
+size_t	vnsize __P((dev_t dev));
+int	vndump __P((dev_t dev));
+
+int vnclose() {return 0;}
+
+int
+vnopen(dev_t dev, int flags, int mode, struct proc *p)
+{
+	int unit = vnunit(dev),size;
+	struct vn_softc **vscp, **old;
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnopen(%x, %x, %x, %x)\n", dev, flags, mode, p);
+#endif
+	if (unit >= numvnd) {
+		/*
+		 * We need to get more space for our config.  If you say
+		 * this is overkill, you're absolutely right.
+		 */
+		size = (unit+1) * (sizeof *vn_softc);
+		vscp = (struct vn_softc **) malloc(size, M_DEVBUF, M_WAITOK);
+		if (!vscp)
+			return(ENOMEM);
+	        bzero(vscp,size);
+		if (numvnd)
+			bcopy(vn_softc, vscp, numvnd * (sizeof *vn_softc));
+		numvnd = unit + 1;
+		old = vn_softc;
+		vn_softc = vscp;
+		if (old)
+			free(old, M_DEVBUF);
+	}
+	if (!vn_softc[unit]) {
+		vn_softc[unit] = (struct vn_softc *) 
+			malloc (sizeof **vn_softc, M_DEVBUF, M_WAITOK);
+		if (!vn_softc[unit])
+			return(ENOMEM);
+		bzero(vn_softc[unit], sizeof **vn_softc);
+	}
+	return(0);
+}
+
+/*
+ * Break the request into bsize pieces and submit using VOP_BMAP/VOP_STRATEGY.
+ * Note that this driver can only be used for swapping over NFS on the hp
+ * since nfs_strategy on the vax cannot handle u-areas and page tables.
+ */
+void
+vnstrategy(struct buf *bp)
+{
+	int unit = vnunit(bp->b_dev);
+	register struct vn_softc *vn = vn_softc[unit];
+	register struct buf *nbp;
+	register int bn, bsize, resid;
+	register caddr_t addr;
+	int sz, flags, error;
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnstrategy(%x): unit %d\n", bp, unit);
+#endif
+	if ((vn->sc_flags & VNF_INITED) == 0) {
+		bp->b_error = ENXIO;
+		bp->b_flags |= B_ERROR;
+		biodone(bp);
+		return;
+	}
+	bn = bp->b_blkno;
+	sz = howmany(bp->b_bcount, DEV_BSIZE);
+	bp->b_resid = bp->b_bcount;
+	if (bn < 0 || bn + sz > vn->sc_size) {
+		if (bn != vn->sc_size) {
+			bp->b_error = EINVAL;
+			bp->b_flags |= B_ERROR;
+		}
+		biodone(bp);
+		return;
+	}
+	bn = dbtob(bn);
+	bsize = vn->sc_vp->v_mount->mnt_stat.f_iosize;
+	addr = bp->b_data;
+	flags = bp->b_flags | B_CALL;
+	for (resid = bp->b_resid; resid; resid -= sz) {
+		struct vnode *vp;
+		daddr_t nbn;
+		int off, s, nra;
+
+		nra = 0;
+		error = VOP_BMAP(vn->sc_vp, bn / bsize, &vp, &nbn, &nra);
+		if (error == 0 && (long)nbn == -1)
+			error = EIO;
+#ifdef DEBUG
+		if (!dovncluster)
+			nra = 0;
+#endif
+
+		if (off = bn % bsize)
+			sz = bsize - off;
+		else
+			sz = (1 + nra) * bsize;
+		if (resid < sz)
+			sz = resid;
+#ifdef DEBUG
+		if (vndebug & VDB_IO)
+			printf("vnstrategy: vp %x/%x bn %x/%x sz %x\n",
+			       vn->sc_vp, vp, bn, nbn, sz);
+#endif
+
+		nbp = getvnbuf();
+		nbp->b_flags = flags;
+		nbp->b_bcount = sz;
+		nbp->b_bufsize = bp->b_bufsize;
+		nbp->b_error = 0;
+		if (vp->v_type == VBLK || vp->v_type == VCHR)
+			nbp->b_dev = vp->v_rdev;
+		else
+			nbp->b_dev = NODEV;
+		nbp->b_data = addr;
+		nbp->b_blkno = nbn + btodb(off);
+		nbp->b_proc = bp->b_proc;
+		nbp->b_iodone = vniodone;
+		nbp->b_vp = vp;
+		nbp->b_pfcent = (int) bp;	/* XXX */
+		nbp->b_rcred = vn->sc_cred;	/* XXX crdup? */
+		nbp->b_wcred = vn->sc_cred;	/* XXX crdup? */
+		nbp->b_dirtyoff = bp->b_dirtyoff;
+		nbp->b_dirtyend = bp->b_dirtyend;
+		nbp->b_validoff = bp->b_validoff;
+		nbp->b_validend = bp->b_validend;
+		/*
+		 * If there was an error or a hole in the file...punt.
+		 * Note that we deal with this after the nbp allocation.
+		 * This ensures that we properly clean up any operations
+		 * that we have already fired off.
+		 *
+		 * XXX we could deal with holes here but it would be
+		 * a hassle (in the write case).
+		 */
+		if (error) {
+			nbp->b_error = error;
+			nbp->b_flags |= B_ERROR;
+			bp->b_resid -= (resid - sz);
+			biodone(nbp);
+			return;
+		}
+		/*
+		 * Just sort by block number
+		 */
+		nbp->b_resid = nbp->b_blkno;
+		s = splbio();
+		disksort(&vn->sc_tab, nbp);
+		if (vn->sc_tab.b_active < vn->sc_maxactive) {
+			vn->sc_tab.b_active++;
+			vnstart(vn);
+		}
+		splx(s);
+		bn += sz;
+		addr += sz;
+	}
+}
+
+/*
+ * Feed requests sequentially.
+ * We do it this way to keep from flooding NFS servers if we are connected
+ * to an NFS file.  This places the burden on the client rather than the
+ * server.
+ */
+void
+vnstart(struct vn_softc *vn)
+{
+	register struct buf *bp;
+
+	/*
+	 * Dequeue now since lower level strategy routine might
+	 * queue using same links
+	 */
+	bp = vn->sc_tab.b_actf;
+	vn->sc_tab.b_actf = bp->b_actf;
+#ifdef DEBUG
+	if (vndebug & VDB_IO)
+		printf("vnstart(%d): bp %x vp %x blkno %x addr %x cnt %x\n",
+		       0, bp, bp->b_vp, bp->b_blkno, bp->b_data,
+		       bp->b_bcount);
+#endif
+	if ((bp->b_flags & B_READ) == 0)
+		bp->b_vp->v_numoutput++;
+	VOP_STRATEGY(bp);
+}
+
+void
+vniodone(struct buf *bp)
+{
+	register struct buf *pbp = (struct buf *)bp->b_pfcent;	/* XXX */
+	register struct vn_softc *vn = vn_softc[vnunit(pbp->b_dev)];
+	int s;
+
+	s = splbio();
+#ifdef DEBUG
+	if (vndebug & VDB_IO)
+		printf("vniodone(%d): bp %x vp %x blkno %x addr %x cnt %x\n",
+		       0, bp, bp->b_vp, bp->b_blkno, bp->b_data,
+		       bp->b_bcount);
+#endif
+	if (bp->b_error) {
+#ifdef DEBUG
+		if (vndebug & VDB_IO)
+			printf("vniodone: bp %x error %d\n", bp, bp->b_error);
+#endif
+		pbp->b_flags |= B_ERROR;
+		pbp->b_error = biowait(bp);
+	}
+	pbp->b_resid -= bp->b_bcount;
+	putvnbuf(bp);
+	if (pbp->b_resid == 0) {
+#ifdef DEBUG
+		if (vndebug & VDB_IO)
+			printf("vniodone: pbp %x iodone\n", pbp);
+#endif
+		biodone(pbp);
+	}
+	if (vn->sc_tab.b_actf)
+		vnstart(vn);
+	else
+		vn->sc_tab.b_active--;
+	splx(s);
+}
+
+int
+vnread(dev_t dev, struct uio *uio, int flags, struct proc *p)
+{
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnread(%x, %x, %x, %x)\n", dev, uio, flags, p);
+#endif
+	return(physio(vnstrategy, NULL, dev, B_READ, minphys, uio));
+}
+
+int
+vnwrite(dev_t dev, struct uio *uio, int flags, struct proc *p)
+{
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnwrite(%x, %x, %x, %x)\n", dev, uio, flags, p);
+#endif
+	return(physio(vnstrategy, NULL, dev, B_WRITE, minphys, uio));
+}
+
+/* ARGSUSED */
+int
+vnioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
+{
+	int unit = vnunit(dev);
+	register struct vn_softc *vn;
+	struct vn_ioctl *vio;
+	struct vattr vattr;
+	struct nameidata nd;
+	int error;
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnioctl(%x, %x, %x, %x, %x): unit %d\n",
+		       dev, cmd, data, flag, p, unit);
+#endif
+	error = suser(p->p_ucred, &p->p_acflag);
+	if (error)
+		return (error);
+	if (unit >= numvnd)
+		return (ENXIO);
+
+	vn = vn_softc[unit];
+	vio = (struct vn_ioctl *)data;
+	switch (cmd) {
+
+	case VNIOCSET:
+		if (vn->sc_flags & VNF_INITED)
+			return(EBUSY);
+		/*
+		 * Always open for read and write.
+		 * This is probably bogus, but it lets vn_open()
+		 * weed out directories, sockets, etc. so we don't
+		 * have to worry about them.
+		 */
+		NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, vio->vn_file, p);
+		if (error = vn_open(&nd, FREAD|FWRITE, 0))
+			return(error);
+		if (error = VOP_GETATTR(nd.ni_vp, &vattr, p->p_ucred, p)) {
+			VOP_UNLOCK(nd.ni_vp);
+			(void) vn_close(nd.ni_vp, FREAD|FWRITE, p->p_ucred, p);
+			return(error);
+		}
+		VOP_UNLOCK(nd.ni_vp);
+		vn->sc_vp = nd.ni_vp;
+		vn->sc_size = btodb(vattr.va_size);	/* note truncation */
+		if (error = vnsetcred(vn, p->p_ucred)) {
+			(void) vn_close(nd.ni_vp, FREAD|FWRITE, p->p_ucred, p);
+			return(error);
+		}
+		vnthrottle(vn, vn->sc_vp);
+		vio->vn_size = dbtob(vn->sc_size);
+		vn->sc_flags |= VNF_INITED;
+#ifdef DEBUG
+		if (vndebug & VDB_INIT)
+			printf("vnioctl: SET vp %x size %x\n",
+			       vn->sc_vp, vn->sc_size);
+#endif
+		break;
+
+	case VNIOCCLR:
+		if ((vn->sc_flags & VNF_INITED) == 0)
+			return(ENXIO);
+		vnclear(vn);
+#ifdef DEBUG
+		if (vndebug & VDB_INIT)
+			printf("vnioctl: CLRed\n");
+#endif
+		break;
+
+	default:
+		return(ENXIO);
+	}
+	return(0);
+}
+
+/*
+ * Duplicate the current processes' credentials.  Since we are called only
+ * as the result of a SET ioctl and only root can do that, any future access
+ * to this "disk" is essentially as root.  Note that credentials may change
+ * if some other uid can write directly to the mapped file (NFS).
+ */
+int 
+vnsetcred(struct vn_softc *vn, struct ucred *cred)
+{
+	struct uio auio;
+	struct iovec aiov;
+	char *tmpbuf;
+	int error;
+
+	vn->sc_cred = crdup(cred);
+	tmpbuf = malloc(DEV_BSIZE, M_TEMP, M_WAITOK);
+
+	/* XXX: Horrible kludge to establish credentials for NFS */
+	aiov.iov_base = tmpbuf;
+	aiov.iov_len = min(DEV_BSIZE, dbtob(vn->sc_size));
+	auio.uio_iov = &aiov;
+	auio.uio_iovcnt = 1;
+	auio.uio_offset = 0;
+	auio.uio_rw = UIO_READ;
+	auio.uio_segflg = UIO_SYSSPACE;
+	auio.uio_resid = aiov.iov_len;
+	error = VOP_READ(vn->sc_vp, &auio, 0, vn->sc_cred);
+
+	free(tmpbuf, M_TEMP);
+	return (error);
+}
+
+/*
+ * Set maxactive based on FS type
+ */
+void
+vnthrottle(struct vn_softc *vn, struct vnode *vp)
+{
+#if 0
+	extern int (**nfsv2_vnodeop_p)();
+
+	if (vp->v_op == nfsv2_vnodeop_p)
+		vn->sc_maxactive = 2;
+	else
+#endif
+		vn->sc_maxactive = 8;
+
+	if (vn->sc_maxactive < 1)
+		vn->sc_maxactive = 1;
+}
+
+void
+vnshutdown()
+{
+	int i;
+
+	for (i = 0; i < numvnd; i++)
+		if (vn_softc[i] && vn_softc[i]->sc_flags & VNF_INITED)
+			vnclear(vn_softc[i]);
+}
+TEXT_SET(cleanup_set,vnshutdown);
+
+void
+vnclear(struct vn_softc *vn)
+{
+	register struct vnode *vp = vn->sc_vp;
+	struct proc *p = curproc;		/* XXX */
+
+#ifdef DEBUG
+	if (vndebug & VDB_FOLLOW)
+		printf("vnclear(%x): vp %x\n", vp);
+#endif
+	vn->sc_flags &= ~VNF_INITED;
+	if (vp == (struct vnode *)0)
+		panic("vnioctl: null vp");
+	(void) vn_close(vp, FREAD|FWRITE, vn->sc_cred, p);
+	crfree(vn->sc_cred);
+	vn->sc_vp = (struct vnode *)0;
+	vn->sc_cred = (struct ucred *)0;
+	vn->sc_size = 0;
+}
+
+size_t
+vnsize(dev_t dev)
+{
+	int unit = vnunit(dev);
+	register struct vn_softc *vn = vn_softc[unit];
+
+	if (unit >= numvnd || (vn->sc_flags & VNF_INITED) == 0)
+		return(-1);
+	return(vn->sc_size);
+}
+
+int
+vndump(dev_t dev)
+{
+	return(ENXIO);
+}
+#endif
diff --git a/sys/nfs/nfsproto.h b/sys/nfs/nfsproto.h
new file mode 100644
index 0000000..ac1a090
--- /dev/null
+++ b/sys/nfs/nfsproto.h
@@ -0,0 +1,441 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * 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.
+ *
+ *	@(#)nfsproto.h	8.1 (Berkeley) 6/10/93
+ * $Id: nfsproto.h,v 1.4 1994/08/21 06:50:13 paul Exp $
+ */
+
+#ifndef _NFS_NFSPROTO_H_
+#define _NFS_NFSPROTO_H_
+
+/*
+ * nfs definitions as per the Version 2 and 3 specs
+ */
+
+/*
+ * Constants as defined in the Sun NFS Version 2 and 3 specs.
+ * "NFS: Network File System Protocol Specification" RFC1094
+ * and in the "NFS: Network File System Version 3 Protocol
+ * Specification"
+ */
+
+#define NFS_PORT	2049
+#define	NFS_PROG	100003
+#define NFS_VER2	2
+#define	NFS_VER3	3
+#define NFS_V2MAXDATA	8192
+#define	NFS_MAXDGRAMDATA 16384
+#define	NFS_MAXDATA	32768
+#define	NFS_MAXPATHLEN	1024
+#define	NFS_MAXNAMLEN	255
+#define	NFS_MAXPKTHDR	404
+#define NFS_MAXPACKET	(NFS_MAXPKTHDR + NFS_MAXDATA)
+#define	NFS_MINPACKET	20
+#define	NFS_FABLKSIZE	512	/* Size in bytes of a block wrt fa_blocks */
+
+/* Stat numbers for rpc returns (version 2 and 3) */
+#define	NFS_OK			0
+#define	NFSERR_PERM		1
+#define	NFSERR_NOENT		2
+#define	NFSERR_IO		5
+#define	NFSERR_NXIO		6
+#define	NFSERR_ACCES		13
+#define	NFSERR_EXIST		17
+#define	NFSERR_XDEV		18	/* Version 3 only */
+#define	NFSERR_NODEV		19
+#define	NFSERR_NOTDIR		20
+#define	NFSERR_ISDIR		21
+#define	NFSERR_INVAL		22	/* Version 3 only */
+#define	NFSERR_FBIG		27
+#define	NFSERR_NOSPC		28
+#define	NFSERR_ROFS		30
+#define	NFSERR_MLINK		31	/* Version 3 only */
+#define	NFSERR_NAMETOL		63
+#define	NFSERR_NOTEMPTY		66
+#define	NFSERR_DQUOT		69
+#define	NFSERR_STALE		70
+#define	NFSERR_REMOTE		71	/* Version 3 only */
+#define	NFSERR_WFLUSH		99	/* Version 2 only */
+#define	NFSERR_BADHANDLE	10001	/* The rest Version 3 only */
+#define	NFSERR_NOT_SYNC		10002
+#define	NFSERR_BAD_COOKIE	10003
+#define	NFSERR_NOTSUPP		10004
+#define	NFSERR_TOOSMALL		10005
+#define	NFSERR_SERVERFAULT	10006
+#define	NFSERR_BADTYPE		10007
+#define	NFSERR_JUKEBOX		10008
+#define NFSERR_TRYLATER		NFSERR_JUKEBOX
+#define	NFSERR_STALEWRITEVERF	30001	/* Fake return for nfs_commit() */
+
+#define NFSERR_RETVOID		0x20000000 /* Return void, not error */
+#define NFSERR_AUTHERR		0x40000000 /* Mark an authentication error */
+#define NFSERR_RETERR		0x80000000 /* Mark an error return for V3 */
+
+/* Sizes in bytes of various nfs rpc components */
+#define	NFSX_UNSIGNED	4
+
+/* specific to NFS Version 2 */
+#define	NFSX_V2FH	32
+#define	NFSX_V2FATTR	68
+#define	NFSX_V2SATTR	32
+#define	NFSX_V2COOKIE	4
+#define NFSX_V2STATFS	20
+
+/* specific to NFS Version 3 */
+#define NFSX_V3FH		(sizeof (fhandle_t)) /* size this server uses */
+#define	NFSX_V3FHMAX		64	/* max. allowed by protocol */
+#define NFSX_V3FATTR		84
+#define NFSX_V3SATTR		60	/* max. all fields filled in */
+#define NFSX_V3SRVSATTR		(sizeof (struct nfsv3_sattr))
+#define NFSX_V3POSTOPATTR	(NFSX_V3FATTR + NFSX_UNSIGNED)
+#define NFSX_V3WCCDATA		(NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
+#define NFSX_V3COOKIEVERF 	8
+#define NFSX_V3WRITEVERF 	8
+#define NFSX_V3CREATEVERF	8
+#define NFSX_V3STATFS		52
+#define NFSX_V3FSINFO		48
+#define NFSX_V3PATHCONF		24
+
+/* variants for both versions */
+#define NFSX_FH(v3)		((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
+					NFSX_V2FH)
+#define NFSX_SRVFH(v3)		((v3) ? NFSX_V3FH : NFSX_V2FH)
+#define	NFSX_FATTR(v3)		((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
+#define NFSX_PREOPATTR(v3)	((v3) ? (7 * NFSX_UNSIGNED) : 0)
+#define NFSX_POSTOPATTR(v3)	((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
+#define NFSX_POSTOPORFATTR(v3)	((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
+					NFSX_V2FATTR)
+#define NFSX_WCCDATA(v3)	((v3) ? NFSX_V3WCCDATA : 0)
+#define NFSX_WCCORFATTR(v3)	((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
+#define	NFSX_SATTR(v3)		((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
+#define	NFSX_COOKIEVERF(v3)	((v3) ? NFSX_V3COOKIEVERF : 0)
+#define	NFSX_WRITEVERF(v3)	((v3) ? NFSX_V3WRITEVERF : 0)
+#define NFSX_READDIR(v3)	((v3) ? (5 * NFSX_UNSIGNED) : \
+					(2 * NFSX_UNSIGNED))
+#define	NFSX_STATFS(v3)		((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
+
+/* nfs rpc procedure numbers (before version mapping) */
+#define	NFSPROC_NULL		0
+#define	NFSPROC_GETATTR		1
+#define	NFSPROC_SETATTR		2
+#define	NFSPROC_LOOKUP		3
+#define	NFSPROC_ACCESS		4
+#define	NFSPROC_READLINK	5
+#define	NFSPROC_READ		6
+#define	NFSPROC_WRITE		7
+#define	NFSPROC_CREATE		8
+#define	NFSPROC_MKDIR		9
+#define	NFSPROC_SYMLINK		10
+#define	NFSPROC_MKNOD		11
+#define	NFSPROC_REMOVE		12
+#define	NFSPROC_RMDIR		13
+#define	NFSPROC_RENAME		14
+#define	NFSPROC_LINK		15
+#define	NFSPROC_READDIR		16
+#define	NFSPROC_READDIRPLUS	17
+#define	NFSPROC_FSSTAT		18
+#define	NFSPROC_FSINFO		19
+#define	NFSPROC_PATHCONF	20
+#define	NFSPROC_COMMIT		21
+
+/* And leasing (nqnfs) procedure numbers (must be last) */
+#define	NQNFSPROC_GETLEASE	22
+#define	NQNFSPROC_VACATED	23
+#define	NQNFSPROC_EVICTED	24
+
+#define NFSPROC_NOOP		25
+#define	NFS_NPROCS		26
+
+/* Actual Version 2 procedure numbers */
+#define	NFSV2PROC_NULL		0
+#define	NFSV2PROC_GETATTR	1
+#define	NFSV2PROC_SETATTR	2
+#define	NFSV2PROC_NOOP		3
+#define	NFSV2PROC_ROOT		NFSV2PROC_NOOP	/* Obsolete */
+#define	NFSV2PROC_LOOKUP	4
+#define	NFSV2PROC_READLINK	5
+#define	NFSV2PROC_READ		6
+#define	NFSV2PROC_WRITECACHE	NFSV2PROC_NOOP	/* Obsolete */
+#define	NFSV2PROC_WRITE		8
+#define	NFSV2PROC_CREATE	9
+#define	NFSV2PROC_REMOVE	10
+#define	NFSV2PROC_RENAME	11
+#define	NFSV2PROC_LINK		12
+#define	NFSV2PROC_SYMLINK	13
+#define	NFSV2PROC_MKDIR		14
+#define	NFSV2PROC_RMDIR		15
+#define	NFSV2PROC_READDIR	16
+#define	NFSV2PROC_STATFS	17
+
+/*
+ * Constants used by the Version 3 protocol for various RPCs
+ */
+#define NFSV3SATTRTIME_DONTCHANGE	0
+#define NFSV3SATTRTIME_TOSERVER		1
+#define NFSV3SATTRTIME_TOCLIENT		2
+
+#define NFSV3ACCESS_READ		0x01
+#define NFSV3ACCESS_LOOKUP		0x02
+#define NFSV3ACCESS_MODIFY		0x04
+#define NFSV3ACCESS_EXTEND		0x08
+#define NFSV3ACCESS_DELETE		0x10
+#define NFSV3ACCESS_EXECUTE		0x20
+
+#define NFSV3WRITE_UNSTABLE		0
+#define NFSV3WRITE_DATASYNC		1
+#define NFSV3WRITE_FILESYNC		2
+
+#define NFSV3CREATE_UNCHECKED		0
+#define NFSV3CREATE_GUARDED		1
+#define NFSV3CREATE_EXCLUSIVE		2
+
+#define NFSV3FSINFO_LINK		0x01
+#define NFSV3FSINFO_SYMLINK		0x02
+#define NFSV3FSINFO_HOMOGENEOUS		0x08
+#define NFSV3FSINFO_CANSETTIME		0x10
+
+/* Conversion macros */
+#define	vtonfsv2_mode(t,m) \
+		txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
+				MAKEIMODE((t), (m)))
+#define vtonfsv3_mode(m)	txdr_unsigned((m) & 07777)
+#define	nfstov_mode(a)		(fxdr_unsigned(u_short, (a))&07777)
+#define	vtonfsv2_type(a)	txdr_unsigned(nfsv2_type[((long)(a))])
+#define	vtonfsv3_type(a)	txdr_unsigned(nfsv3_type[((long)(a))])
+#define	nfsv2tov_type(a)	nv2tov_type[fxdr_unsigned(u_long,(a))&0x7]
+#define	nfsv3tov_type(a)	nv3tov_type[fxdr_unsigned(u_long,(a))&0x7]
+
+/* File types */
+typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
+	NFSOCK=6, NFFIFO=7 } nfstype;
+
+/* Structs for common parts of the rpc's */
+/*
+ * File Handle (32 bytes for version 2), variable up to 64 for version 3.
+ * File Handles of up to NFS_SMALLFH in size are stored directly in the
+ * nfs node, whereas larger ones are malloc'd. (This never happens when
+ * NFS_SMALLFH is set to 64.)
+ * NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
+ */
+#ifndef NFS_SMALLFH
+#define NFS_SMALLFH	64
+#endif
+union nfsfh {
+	fhandle_t	fh_generic;
+	u_char		fh_bytes[NFS_SMALLFH];
+};
+typedef union nfsfh nfsfh_t;
+
+struct nfsv2_time {
+	u_long	nfsv2_sec;
+	u_long	nfsv2_usec;
+};
+typedef struct nfsv2_time	nfstime2;
+
+struct nfsv3_time {
+	u_long	nfsv3_sec;
+	u_long	nfsv3_nsec;
+};
+typedef struct nfsv3_time	nfstime3;
+
+/*
+ * Quads are defined as arrays of 2 longs to ensure dense packing for the
+ * protocol and to facilitate xdr conversion.
+ */
+struct nfs_uquad {
+	u_long	nfsuquad[2];
+};
+typedef	struct nfs_uquad	nfsuint64;
+
+/*
+ * Used to convert between two u_longs and a u_quad_t.
+ */
+union nfs_quadconvert {
+	u_long		lval[2];
+	u_quad_t	qval;
+};
+typedef union nfs_quadconvert	nfsquad_t;
+
+/*
+ * NFS Version 3 special file number.
+ */
+struct nfsv3_spec {
+	u_long	specdata1;
+	u_long	specdata2;
+};
+typedef	struct nfsv3_spec	nfsv3spec;
+
+/*
+ * File attributes and setable attributes. These structures cover both
+ * NFS version 2 and the version 3 protocol. Note that the union is only
+ * used so that one pointer can refer to both variants. These structures
+ * go out on the wire and must be densely packed, so no quad data types
+ * are used. (all fields are longs or u_longs or structures of same)
+ * NB: You can't do sizeof(struct nfs_fattr), you must use the
+ *     NFSX_FATTR(v3) macro.
+ */
+struct nfs_fattr {
+	u_long	fa_type;
+	u_long	fa_mode;
+	u_long	fa_nlink;
+	u_long	fa_uid;
+	u_long	fa_gid;
+	union {
+		struct {
+			u_long		nfsv2fa_size;
+			u_long		nfsv2fa_blocksize;
+			u_long		nfsv2fa_rdev;
+			u_long		nfsv2fa_blocks;
+			u_long		nfsv2fa_fsid;
+			u_long		nfsv2fa_fileid;
+			nfstime2	nfsv2fa_atime;
+			nfstime2	nfsv2fa_mtime;
+			nfstime2	nfsv2fa_ctime;
+		} fa_nfsv2;
+		struct {
+			nfsuint64	nfsv3fa_size;
+			nfsuint64	nfsv3fa_used;
+			nfsv3spec	nfsv3fa_rdev;
+			nfsuint64	nfsv3fa_fsid;
+			nfsuint64	nfsv3fa_fileid;
+			nfstime3	nfsv3fa_atime;
+			nfstime3	nfsv3fa_mtime;
+			nfstime3	nfsv3fa_ctime;
+		} fa_nfsv3;
+	} fa_un;
+};
+
+/* and some ugly defines for accessing union components */
+#define	fa2_size		fa_un.fa_nfsv2.nfsv2fa_size
+#define	fa2_blocksize		fa_un.fa_nfsv2.nfsv2fa_blocksize
+#define	fa2_rdev		fa_un.fa_nfsv2.nfsv2fa_rdev
+#define	fa2_blocks		fa_un.fa_nfsv2.nfsv2fa_blocks
+#define	fa2_fsid		fa_un.fa_nfsv2.nfsv2fa_fsid
+#define	fa2_fileid		fa_un.fa_nfsv2.nfsv2fa_fileid
+#define	fa2_atime		fa_un.fa_nfsv2.nfsv2fa_atime
+#define	fa2_mtime		fa_un.fa_nfsv2.nfsv2fa_mtime
+#define	fa2_ctime		fa_un.fa_nfsv2.nfsv2fa_ctime
+#define	fa3_size		fa_un.fa_nfsv3.nfsv3fa_size
+#define	fa3_used		fa_un.fa_nfsv3.nfsv3fa_used
+#define	fa3_rdev		fa_un.fa_nfsv3.nfsv3fa_rdev
+#define	fa3_fsid		fa_un.fa_nfsv3.nfsv3fa_fsid
+#define	fa3_fileid		fa_un.fa_nfsv3.nfsv3fa_fileid
+#define	fa3_atime		fa_un.fa_nfsv3.nfsv3fa_atime
+#define	fa3_mtime		fa_un.fa_nfsv3.nfsv3fa_mtime
+#define	fa3_ctime		fa_un.fa_nfsv3.nfsv3fa_ctime
+
+struct nfsv2_sattr {
+	u_long		sa_mode;
+	u_long		sa_uid;
+	u_long		sa_gid;
+	u_long		sa_size;
+	nfstime2	sa_atime;
+	nfstime2	sa_mtime;
+};
+
+/*
+ * NFS Version 3 sattr structure for the new node creation case.
+ */
+struct nfsv3_sattr {
+	u_long		sa_modetrue;
+	u_long		sa_mode;
+	u_long		sa_uidtrue;
+	u_long		sa_uid;
+	u_long		sa_gidtrue;
+	u_long		sa_gid;
+	u_long		sa_sizefalse;
+	u_long		sa_atimetype;
+	nfstime3	sa_atime;
+	u_long		sa_mtimetype;
+	nfstime3	sa_mtime;
+};
+
+struct nfs_statfs {
+	union {
+		struct {
+			u_long		nfsv2sf_tsize;
+			u_long		nfsv2sf_bsize;
+			u_long		nfsv2sf_blocks;
+			u_long		nfsv2sf_bfree;
+			u_long		nfsv2sf_bavail;
+		} sf_nfsv2;
+		struct {
+			nfsuint64	nfsv3sf_tbytes;
+			nfsuint64	nfsv3sf_fbytes;
+			nfsuint64	nfsv3sf_abytes;
+			nfsuint64	nfsv3sf_tfiles;
+			nfsuint64	nfsv3sf_ffiles;
+			nfsuint64	nfsv3sf_afiles;
+			u_long		nfsv3sf_invarsec;
+		} sf_nfsv3;
+	} sf_un;
+};
+
+#define sf_tsize	sf_un.sf_nfsv2.nfsv2sf_tsize
+#define sf_bsize	sf_un.sf_nfsv2.nfsv2sf_bsize
+#define sf_blocks	sf_un.sf_nfsv2.nfsv2sf_blocks
+#define sf_bfree	sf_un.sf_nfsv2.nfsv2sf_bfree
+#define sf_bavail	sf_un.sf_nfsv2.nfsv2sf_bavail
+#define sf_tbytes	sf_un.sf_nfsv3.nfsv3sf_tbytes
+#define sf_fbytes	sf_un.sf_nfsv3.nfsv3sf_fbytes
+#define sf_abytes	sf_un.sf_nfsv3.nfsv3sf_abytes
+#define sf_tfiles	sf_un.sf_nfsv3.nfsv3sf_tfiles
+#define sf_ffiles	sf_un.sf_nfsv3.nfsv3sf_ffiles
+#define sf_afiles	sf_un.sf_nfsv3.nfsv3sf_afiles
+#define sf_invarsec	sf_un.sf_nfsv3.nfsv3sf_invarsec
+
+struct nfsv3_fsinfo {
+	u_long		fs_rtmax;
+	u_long		fs_rtpref;
+	u_long		fs_rtmult;
+	u_long		fs_wtmax;
+	u_long		fs_wtpref;
+	u_long		fs_wtmult;
+	u_long		fs_dtpref;
+	nfsuint64	fs_maxfilesize;
+	nfstime3	fs_timedelta;
+	u_long		fs_properties;
+};
+
+struct nfsv3_pathconf {
+	u_long		pc_linkmax;
+	u_long		pc_namemax;
+	u_long		pc_notrunc;
+	u_long		pc_chownrestricted;
+	u_long		pc_caseinsensitive;
+	u_long		pc_casepreserving;
+};
+
+#endif
diff --git a/sys/sys/vnioctl.h b/sys/sys/vnioctl.h
new file mode 100644
index 0000000..ace82ee
--- /dev/null
+++ b/sys/sys/vnioctl.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department.
+ *
+ * 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.
+ *
+ * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
+ *
+ *	@(#)vnioctl.h	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Ioctl definitions for file (vnode) disk pseudo-device.
+ */
+
+#define _PATH_VNTAB	"/etc/vntab"	/* default config file */
+
+struct vn_ioctl {
+	char	*vn_file;	/* pathname of file to mount */
+	int	vn_size;	/* (returned) size of disk */
+};
+
+/*
+ * Before you can use a unit, it must be configured with VNIOCSET.
+ * The configuration persists across opens and closes of the device;
+ * an VNIOCCLR must be used to reset a configuration.  An attempt to
+ * VNIOCSET an already active unit will return EBUSY.
+ */
+#define VNIOCSET	_IOWR('F', 0, struct vn_ioctl)	/* enable disk */
+#define VNIOCCLR	_IOW('F', 1, struct vn_ioctl)	/* disable disk */