BSD 4.4 Lite Kernel Sources

1 files changed, 2539 insertions, 0 deletions

diff --git a/sys/nfsclient/nfs_vnops.c b/sys/nfsclient/nfs_vnops.c
new file mode 100644
index 0000000..a909b48
--- /dev/null
+++ b/sys/nfsclient/nfs_vnops.c
@@ -0,0 +1,2539 @@
+/*
+ * 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.
+ *
+ *	@(#)nfs_vnops.c	8.5 (Berkeley) 2/13/94
+ */
+
+/*
+ * vnode op calls for sun nfs version 2
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/mount.h>
+#include <sys/buf.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/conf.h>
+#include <sys/namei.h>
+#include <sys/vnode.h>
+#include <sys/map.h>
+#include <sys/dirent.h>
+
+#include <vm/vm.h>
+
+#include <miscfs/specfs/specdev.h>
+#include <miscfs/fifofs/fifo.h>
+
+#include <nfs/rpcv2.h>
+#include <nfs/nfsv2.h>
+#include <nfs/nfs.h>
+#include <nfs/nfsnode.h>
+#include <nfs/nfsmount.h>
+#include <nfs/xdr_subs.h>
+#include <nfs/nfsm_subs.h>
+#include <nfs/nqnfs.h>
+
+/* Defs */
+#define	TRUE	1
+#define	FALSE	0
+
+/*
+ * Global vfs data structures for nfs
+ */
+int (**nfsv2_vnodeop_p)();
+struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = {
+	{ &vop_default_desc, vn_default_error },
+	{ &vop_lookup_desc, nfs_lookup },	/* lookup */
+	{ &vop_create_desc, nfs_create },	/* create */
+	{ &vop_mknod_desc, nfs_mknod },		/* mknod */
+	{ &vop_open_desc, nfs_open },		/* open */
+	{ &vop_close_desc, nfs_close },		/* close */
+	{ &vop_access_desc, nfs_access },	/* access */
+	{ &vop_getattr_desc, nfs_getattr },	/* getattr */
+	{ &vop_setattr_desc, nfs_setattr },	/* setattr */
+	{ &vop_read_desc, nfs_read },		/* read */
+	{ &vop_write_desc, nfs_write },		/* write */
+	{ &vop_ioctl_desc, nfs_ioctl },		/* ioctl */
+	{ &vop_select_desc, nfs_select },	/* select */
+	{ &vop_mmap_desc, nfs_mmap },		/* mmap */
+	{ &vop_fsync_desc, nfs_fsync },		/* fsync */
+	{ &vop_seek_desc, nfs_seek },		/* seek */
+	{ &vop_remove_desc, nfs_remove },	/* remove */
+	{ &vop_link_desc, nfs_link },		/* link */
+	{ &vop_rename_desc, nfs_rename },	/* rename */
+	{ &vop_mkdir_desc, nfs_mkdir },		/* mkdir */
+	{ &vop_rmdir_desc, nfs_rmdir },		/* rmdir */
+	{ &vop_symlink_desc, nfs_symlink },	/* symlink */
+	{ &vop_readdir_desc, nfs_readdir },	/* readdir */
+	{ &vop_readlink_desc, nfs_readlink },	/* readlink */
+	{ &vop_abortop_desc, nfs_abortop },	/* abortop */
+	{ &vop_inactive_desc, nfs_inactive },	/* inactive */
+	{ &vop_reclaim_desc, nfs_reclaim },	/* reclaim */
+	{ &vop_lock_desc, nfs_lock },		/* lock */
+	{ &vop_unlock_desc, nfs_unlock },	/* unlock */
+	{ &vop_bmap_desc, nfs_bmap },		/* bmap */
+	{ &vop_strategy_desc, nfs_strategy },	/* strategy */
+	{ &vop_print_desc, nfs_print },		/* print */
+	{ &vop_islocked_desc, nfs_islocked },	/* islocked */
+	{ &vop_pathconf_desc, nfs_pathconf },	/* pathconf */
+	{ &vop_advlock_desc, nfs_advlock },	/* advlock */
+	{ &vop_blkatoff_desc, nfs_blkatoff },	/* blkatoff */
+	{ &vop_valloc_desc, nfs_valloc },	/* valloc */
+	{ &vop_reallocblks_desc, nfs_reallocblks },	/* reallocblks */
+	{ &vop_vfree_desc, nfs_vfree },		/* vfree */
+	{ &vop_truncate_desc, nfs_truncate },	/* truncate */
+	{ &vop_update_desc, nfs_update },	/* update */
+	{ &vop_bwrite_desc, vn_bwrite },
+	{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
+};
+struct vnodeopv_desc nfsv2_vnodeop_opv_desc =
+	{ &nfsv2_vnodeop_p, nfsv2_vnodeop_entries };
+
+/*
+ * Special device vnode ops
+ */
+int (**spec_nfsv2nodeop_p)();
+struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = {
+	{ &vop_default_desc, vn_default_error },
+	{ &vop_lookup_desc, spec_lookup },	/* lookup */
+	{ &vop_create_desc, spec_create },	/* create */
+	{ &vop_mknod_desc, spec_mknod },	/* mknod */
+	{ &vop_open_desc, spec_open },		/* open */
+	{ &vop_close_desc, nfsspec_close },	/* close */
+	{ &vop_access_desc, nfsspec_access },	/* access */
+	{ &vop_getattr_desc, nfs_getattr },	/* getattr */
+	{ &vop_setattr_desc, nfs_setattr },	/* setattr */
+	{ &vop_read_desc, nfsspec_read },	/* read */
+	{ &vop_write_desc, nfsspec_write },	/* write */
+	{ &vop_ioctl_desc, spec_ioctl },	/* ioctl */
+	{ &vop_select_desc, spec_select },	/* select */
+	{ &vop_mmap_desc, spec_mmap },		/* mmap */
+	{ &vop_fsync_desc, nfs_fsync },		/* fsync */
+	{ &vop_seek_desc, spec_seek },		/* seek */
+	{ &vop_remove_desc, spec_remove },	/* remove */
+	{ &vop_link_desc, spec_link },		/* link */
+	{ &vop_rename_desc, spec_rename },	/* rename */
+	{ &vop_mkdir_desc, spec_mkdir },	/* mkdir */
+	{ &vop_rmdir_desc, spec_rmdir },	/* rmdir */
+	{ &vop_symlink_desc, spec_symlink },	/* symlink */
+	{ &vop_readdir_desc, spec_readdir },	/* readdir */
+	{ &vop_readlink_desc, spec_readlink },	/* readlink */
+	{ &vop_abortop_desc, spec_abortop },	/* abortop */
+	{ &vop_inactive_desc, nfs_inactive },	/* inactive */
+	{ &vop_reclaim_desc, nfs_reclaim },	/* reclaim */
+	{ &vop_lock_desc, nfs_lock },		/* lock */
+	{ &vop_unlock_desc, nfs_unlock },	/* unlock */
+	{ &vop_bmap_desc, spec_bmap },		/* bmap */
+	{ &vop_strategy_desc, spec_strategy },	/* strategy */
+	{ &vop_print_desc, nfs_print },		/* print */
+	{ &vop_islocked_desc, nfs_islocked },	/* islocked */
+	{ &vop_pathconf_desc, spec_pathconf },	/* pathconf */
+	{ &vop_advlock_desc, spec_advlock },	/* advlock */
+	{ &vop_blkatoff_desc, spec_blkatoff },	/* blkatoff */
+	{ &vop_valloc_desc, spec_valloc },	/* valloc */
+	{ &vop_reallocblks_desc, spec_reallocblks },	/* reallocblks */
+	{ &vop_vfree_desc, spec_vfree },	/* vfree */
+	{ &vop_truncate_desc, spec_truncate },	/* truncate */
+	{ &vop_update_desc, nfs_update },	/* update */
+	{ &vop_bwrite_desc, vn_bwrite },
+	{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
+};
+struct vnodeopv_desc spec_nfsv2nodeop_opv_desc =
+	{ &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries };
+
+#ifdef FIFO
+int (**fifo_nfsv2nodeop_p)();
+struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = {
+	{ &vop_default_desc, vn_default_error },
+	{ &vop_lookup_desc, fifo_lookup },	/* lookup */
+	{ &vop_create_desc, fifo_create },	/* create */
+	{ &vop_mknod_desc, fifo_mknod },	/* mknod */
+	{ &vop_open_desc, fifo_open },		/* open */
+	{ &vop_close_desc, nfsfifo_close },	/* close */
+	{ &vop_access_desc, nfsspec_access },	/* access */
+	{ &vop_getattr_desc, nfs_getattr },	/* getattr */
+	{ &vop_setattr_desc, nfs_setattr },	/* setattr */
+	{ &vop_read_desc, nfsfifo_read },	/* read */
+	{ &vop_write_desc, nfsfifo_write },	/* write */
+	{ &vop_ioctl_desc, fifo_ioctl },	/* ioctl */
+	{ &vop_select_desc, fifo_select },	/* select */
+	{ &vop_mmap_desc, fifo_mmap },		/* mmap */
+	{ &vop_fsync_desc, nfs_fsync },		/* fsync */
+	{ &vop_seek_desc, fifo_seek },		/* seek */
+	{ &vop_remove_desc, fifo_remove },	/* remove */
+	{ &vop_link_desc, fifo_link },		/* link */
+	{ &vop_rename_desc, fifo_rename },	/* rename */
+	{ &vop_mkdir_desc, fifo_mkdir },	/* mkdir */
+	{ &vop_rmdir_desc, fifo_rmdir },	/* rmdir */
+	{ &vop_symlink_desc, fifo_symlink },	/* symlink */
+	{ &vop_readdir_desc, fifo_readdir },	/* readdir */
+	{ &vop_readlink_desc, fifo_readlink },	/* readlink */
+	{ &vop_abortop_desc, fifo_abortop },	/* abortop */
+	{ &vop_inactive_desc, nfs_inactive },	/* inactive */
+	{ &vop_reclaim_desc, nfs_reclaim },	/* reclaim */
+	{ &vop_lock_desc, nfs_lock },		/* lock */
+	{ &vop_unlock_desc, nfs_unlock },	/* unlock */
+	{ &vop_bmap_desc, fifo_bmap },		/* bmap */
+	{ &vop_strategy_desc, fifo_badop },	/* strategy */
+	{ &vop_print_desc, nfs_print },		/* print */
+	{ &vop_islocked_desc, nfs_islocked },	/* islocked */
+	{ &vop_pathconf_desc, fifo_pathconf },	/* pathconf */
+	{ &vop_advlock_desc, fifo_advlock },	/* advlock */
+	{ &vop_blkatoff_desc, fifo_blkatoff },	/* blkatoff */
+	{ &vop_valloc_desc, fifo_valloc },	/* valloc */
+	{ &vop_reallocblks_desc, fifo_reallocblks },	/* reallocblks */
+	{ &vop_vfree_desc, fifo_vfree },	/* vfree */
+	{ &vop_truncate_desc, fifo_truncate },	/* truncate */
+	{ &vop_update_desc, nfs_update },	/* update */
+	{ &vop_bwrite_desc, vn_bwrite },
+	{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
+};
+struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc =
+	{ &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries };
+#endif /* FIFO */
+
+void nqnfs_clientlease();
+
+/*
+ * Global variables
+ */
+extern u_long nfs_procids[NFS_NPROCS];
+extern u_long nfs_prog, nfs_vers, nfs_true, nfs_false;
+extern char nfsiobuf[MAXPHYS+NBPG];
+struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
+int nfs_numasync = 0;
+#define	DIRHDSIZ	(sizeof (struct dirent) - (MAXNAMLEN + 1))
+
+/*
+ * nfs null call from vfs.
+ */
+int
+nfs_null(vp, cred, procp)
+	struct vnode *vp;
+	struct ucred *cred;
+	struct proc *procp;
+{
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb;
+	
+	nfsm_reqhead(vp, NFSPROC_NULL, 0);
+	nfsm_request(vp, NFSPROC_NULL, procp, cred);
+	nfsm_reqdone;
+	return (error);
+}
+
+/*
+ * nfs access vnode op.
+ * For nfs, just return ok. File accesses may fail later.
+ * For nqnfs, use the access rpc to check accessibility. If file modes are
+ * changed on the server, accesses might still fail later.
+ */
+int
+nfs_access(ap)
+	struct vop_access_args /* {
+		struct vnode *a_vp;
+		int  a_mode;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register u_long *tl;
+	register caddr_t cp;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	/*
+	 * For nqnfs, do an access rpc, otherwise you are stuck emulating
+	 * ufs_access() locally using the vattr. This may not be correct,
+	 * since the server may apply other access criteria such as
+	 * client uid-->server uid mapping that we do not know about, but
+	 * this is better than just returning anything that is lying about
+	 * in the cache.
+	 */
+	if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) {
+		nfsstats.rpccnt[NQNFSPROC_ACCESS]++;
+		nfsm_reqhead(vp, NQNFSPROC_ACCESS, NFSX_FH + 3 * NFSX_UNSIGNED);
+		nfsm_fhtom(vp);
+		nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED);
+		if (ap->a_mode & VREAD)
+			*tl++ = nfs_true;
+		else
+			*tl++ = nfs_false;
+		if (ap->a_mode & VWRITE)
+			*tl++ = nfs_true;
+		else
+			*tl++ = nfs_false;
+		if (ap->a_mode & VEXEC)
+			*tl = nfs_true;
+		else
+			*tl = nfs_false;
+		nfsm_request(vp, NQNFSPROC_ACCESS, ap->a_p, ap->a_cred);
+		nfsm_reqdone;
+		return (error);
+	} else
+		return (nfsspec_access(ap));
+}
+
+/*
+ * nfs open vnode op
+ * Check to see if the type is ok
+ * and that deletion is not in progress.
+ * For paged in text files, you will need to flush the page cache
+ * if consistency is lost.
+ */
+/* ARGSUSED */
+int
+nfs_open(ap)
+	struct vop_open_args /* {
+		struct vnode *a_vp;
+		int  a_mode;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	struct nfsnode *np = VTONFS(vp);
+	struct nfsmount *nmp = VFSTONFS(vp->v_mount);
+	struct vattr vattr;
+	int error;
+
+	if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK)
+		return (EACCES);
+	if (vp->v_flag & VTEXT) {
+	    /*
+	     * Get a valid lease. If cached data is stale, flush it.
+	     */
+	    if (nmp->nm_flag & NFSMNT_NQNFS) {
+		if (NQNFS_CKINVALID(vp, np, NQL_READ)) {
+		    do {
+			error = nqnfs_getlease(vp, NQL_READ, ap->a_cred, ap->a_p);
+		    } while (error == NQNFS_EXPIRED);
+		    if (error)
+			return (error);
+		    if (np->n_lrev != np->n_brev ||
+			(np->n_flag & NQNFSNONCACHE)) {
+			if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
+				ap->a_p, 1)) == EINTR)
+				return (error);
+			(void) vnode_pager_uncache(vp);
+			np->n_brev = np->n_lrev;
+		    }
+		}
+	    } else {
+		if (np->n_flag & NMODIFIED) {
+			if ((error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
+				ap->a_p, 1)) == EINTR)
+				return (error);
+			(void) vnode_pager_uncache(vp);
+			np->n_attrstamp = 0;
+			np->n_direofoffset = 0;
+			if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p))
+				return (error);
+			np->n_mtime = vattr.va_mtime.ts_sec;
+		} else {
+			if (error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p))
+				return (error);
+			if (np->n_mtime != vattr.va_mtime.ts_sec) {
+				np->n_direofoffset = 0;
+				if ((error = nfs_vinvalbuf(vp, V_SAVE,
+					ap->a_cred, ap->a_p, 1)) == EINTR)
+					return (error);
+				(void) vnode_pager_uncache(vp);
+				np->n_mtime = vattr.va_mtime.ts_sec;
+			}
+		}
+	    }
+	} else if ((nmp->nm_flag & NFSMNT_NQNFS) == 0)
+		np->n_attrstamp = 0; /* For Open/Close consistency */
+	return (0);
+}
+
+/*
+ * nfs close vnode op
+ * For reg files, invalidate any buffer cache entries.
+ */
+/* ARGSUSED */
+int
+nfs_close(ap)
+	struct vop_close_args /* {
+		struct vnodeop_desc *a_desc;
+		struct vnode *a_vp;
+		int  a_fflag;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	int error = 0;
+
+	if (vp->v_type == VREG) {
+	    if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 &&
+		(np->n_flag & NMODIFIED)) {
+		error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1);
+		np->n_attrstamp = 0;
+	    }
+	    if (np->n_flag & NWRITEERR) {
+		np->n_flag &= ~NWRITEERR;
+		error = np->n_error;
+	    }
+	}
+	return (error);
+}
+
+/*
+ * nfs getattr call from vfs.
+ */
+int
+nfs_getattr(ap)
+	struct vop_getattr_args /* {
+		struct vnode *a_vp;
+		struct vattr *a_vap;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	register caddr_t cp;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	
+	/*
+	 * Update local times for special files.
+	 */
+	if (np->n_flag & (NACC | NUPD))
+		np->n_flag |= NCHG;
+	/*
+	 * First look in the cache.
+	 */
+	if (nfs_getattrcache(vp, ap->a_vap) == 0)
+		return (0);
+	nfsstats.rpccnt[NFSPROC_GETATTR]++;
+	nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH);
+	nfsm_fhtom(vp);
+	nfsm_request(vp, NFSPROC_GETATTR, ap->a_p, ap->a_cred);
+	nfsm_loadattr(vp, ap->a_vap);
+	nfsm_reqdone;
+	return (error);
+}
+
+/*
+ * nfs setattr call.
+ */
+int
+nfs_setattr(ap)
+	struct vop_setattr_args /* {
+		struct vnodeop_desc *a_desc;
+		struct vnode *a_vp;
+		struct vattr *a_vap;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct nfsv2_sattr *sp;
+	register caddr_t cp;
+	register long t1;
+	caddr_t bpos, dpos, cp2;
+	u_long *tl;
+	int error = 0, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	register struct vattr *vap = ap->a_vap;
+	u_quad_t frev, tsize;
+
+	if (vap->va_size != VNOVAL || vap->va_mtime.ts_sec != VNOVAL ||
+		vap->va_atime.ts_sec != VNOVAL) {
+		if (vap->va_size != VNOVAL) {
+			if (np->n_flag & NMODIFIED) {
+			    if (vap->va_size == 0)
+				error = nfs_vinvalbuf(vp, 0, ap->a_cred,
+					ap->a_p, 1);
+			    else
+				error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
+					ap->a_p, 1);
+			    if (error)
+				return (error);
+			}
+			tsize = np->n_size;
+			np->n_size = np->n_vattr.va_size = vap->va_size;
+			vnode_pager_setsize(vp, (u_long)np->n_size);
+		} else if ((np->n_flag & NMODIFIED) &&
+			(error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
+			 ap->a_p, 1)) == EINTR)
+			return (error);
+	}
+	nfsstats.rpccnt[NFSPROC_SETATTR]++;
+	isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR(isnq));
+	nfsm_fhtom(vp);
+	nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq));
+	if (vap->va_mode == (u_short)-1)
+		sp->sa_mode = VNOVAL;
+	else
+		sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode);
+	if (vap->va_uid == (uid_t)-1)
+		sp->sa_uid = VNOVAL;
+	else
+		sp->sa_uid = txdr_unsigned(vap->va_uid);
+	if (vap->va_gid == (gid_t)-1)
+		sp->sa_gid = VNOVAL;
+	else
+		sp->sa_gid = txdr_unsigned(vap->va_gid);
+	if (isnq) {
+		txdr_hyper(&vap->va_size, &sp->sa_nqsize);
+		txdr_nqtime(&vap->va_atime, &sp->sa_nqatime);
+		txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime);
+		sp->sa_nqflags = txdr_unsigned(vap->va_flags);
+		sp->sa_nqrdev = VNOVAL;
+	} else {
+		sp->sa_nfssize = txdr_unsigned(vap->va_size);
+		txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime);
+		txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime);
+	}
+	nfsm_request(vp, NFSPROC_SETATTR, ap->a_p, ap->a_cred);
+	nfsm_loadattr(vp, (struct vattr *)0);
+	if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) &&
+	    NQNFS_CKCACHABLE(vp, NQL_WRITE)) {
+		nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
+		fxdr_hyper(tl, &frev);
+		if (frev > np->n_brev)
+			np->n_brev = frev;
+	}
+	nfsm_reqdone;
+	if (error) {
+		np->n_size = np->n_vattr.va_size = tsize;
+		vnode_pager_setsize(vp, (u_long)np->n_size);
+	}
+	return (error);
+}
+
+/*
+ * nfs lookup call, one step at a time...
+ * First look in cache
+ * If not found, unlock the directory nfsnode and do the rpc
+ */
+int
+nfs_lookup(ap)
+	struct vop_lookup_args /* {
+		struct vnodeop_desc *a_desc;
+		struct vnode *a_dvp;
+		struct vnode **a_vpp;
+		struct componentname *a_cnp;
+	} */ *ap;
+{
+	register struct componentname *cnp = ap->a_cnp;
+	register struct vnode *dvp = ap->a_dvp;
+	register struct vnode **vpp = ap->a_vpp;
+	register int flags = cnp->cn_flags;
+	register struct vnode *vdp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1, t2;
+	struct nfsmount *nmp;
+	caddr_t bpos, dpos, cp2;
+	time_t reqtime;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct vnode *newvp;
+	long len;
+	nfsv2fh_t *fhp;
+	struct nfsnode *np;
+	int lockparent, wantparent, error = 0;
+	int nqlflag, cachable;
+	u_quad_t frev;
+
+	*vpp = NULL;
+	if (dvp->v_type != VDIR)
+		return (ENOTDIR);
+	lockparent = flags & LOCKPARENT;
+	wantparent = flags & (LOCKPARENT|WANTPARENT);
+	nmp = VFSTONFS(dvp->v_mount);
+	np = VTONFS(dvp);
+	if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) {
+		struct vattr vattr;
+		int vpid;
+
+		vdp = *vpp;
+		vpid = vdp->v_id;
+		/*
+		 * See the comment starting `Step through' in ufs/ufs_lookup.c
+		 * for an explanation of the locking protocol
+		 */
+		if (dvp == vdp) {
+			VREF(vdp);
+			error = 0;
+		} else
+			error = vget(vdp, 1);
+		if (!error) {
+			if (vpid == vdp->v_id) {
+			   if (nmp->nm_flag & NFSMNT_NQNFS) {
+				if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) == 0) {
+					nfsstats.lookupcache_hits++;
+					if (cnp->cn_nameiop != LOOKUP &&
+					    (flags & ISLASTCN))
+					    cnp->cn_flags |= SAVENAME;
+					return (0);
+			        } else if (NQNFS_CKCACHABLE(dvp, NQL_READ)) {
+					if (np->n_lrev != np->n_brev ||
+					    (np->n_flag & NMODIFIED)) {
+						np->n_direofoffset = 0;
+						cache_purge(dvp);
+						error = nfs_vinvalbuf(dvp, 0,
+						    cnp->cn_cred, cnp->cn_proc,
+						    1);
+						if (error == EINTR)
+							return (error);
+						np->n_brev = np->n_lrev;
+					} else {
+						nfsstats.lookupcache_hits++;
+						if (cnp->cn_nameiop != LOOKUP &&
+						    (flags & ISLASTCN))
+						    cnp->cn_flags |= SAVENAME;
+						return (0);
+					}
+				}
+			   } else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) &&
+			       vattr.va_ctime.ts_sec == VTONFS(vdp)->n_ctime) {
+				nfsstats.lookupcache_hits++;
+				if (cnp->cn_nameiop != LOOKUP &&
+				    (flags & ISLASTCN))
+					cnp->cn_flags |= SAVENAME;
+				return (0);
+			   }
+			   cache_purge(vdp);
+			}
+			vrele(vdp);
+		}
+		*vpp = NULLVP;
+	}
+	error = 0;
+	nfsstats.lookupcache_misses++;
+	nfsstats.rpccnt[NFSPROC_LOOKUP]++;
+	len = cnp->cn_namelen;
+	nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
+
+	/*
+	 * For nqnfs optionally piggyback a getlease request for the name
+	 * being looked up.
+	 */
+	if (nmp->nm_flag & NFSMNT_NQNFS) {
+		nfsm_build(tl, u_long *, NFSX_UNSIGNED);
+		if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) &&
+		    ((cnp->cn_flags & MAKEENTRY) &&
+		    (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))))
+			*tl = txdr_unsigned(nmp->nm_leaseterm);
+		else
+			*tl = 0;
+	}
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
+	reqtime = time.tv_sec;
+	nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred);
+nfsmout:
+	if (error) {
+		if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
+		    (flags & ISLASTCN) && error == ENOENT)
+			error = EJUSTRETURN;
+		if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
+			cnp->cn_flags |= SAVENAME;
+		return (error);
+	}
+	if (nmp->nm_flag & NFSMNT_NQNFS) {
+		nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+		if (*tl) {
+			nqlflag = fxdr_unsigned(int, *tl);
+			nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED);
+			cachable = fxdr_unsigned(int, *tl++);
+			reqtime += fxdr_unsigned(int, *tl++);
+			fxdr_hyper(tl, &frev);
+		} else
+			nqlflag = 0;
+	}
+	nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH);
+
+	/*
+	 * Handle RENAME case...
+	 */
+	if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) {
+		if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
+			m_freem(mrep);
+			return (EISDIR);
+		}
+		if (error = nfs_nget(dvp->v_mount, fhp, &np)) {
+			m_freem(mrep);
+			return (error);
+		}
+		newvp = NFSTOV(np);
+		if (error =
+		    nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) {
+			vrele(newvp);
+			m_freem(mrep);
+			return (error);
+		}
+		*vpp = newvp;
+		m_freem(mrep);
+		cnp->cn_flags |= SAVENAME;
+		return (0);
+	}
+
+	if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
+		VREF(dvp);
+		newvp = dvp;
+	} else {
+		if (error = nfs_nget(dvp->v_mount, fhp, &np)) {
+			m_freem(mrep);
+			return (error);
+		}
+		newvp = NFSTOV(np);
+	}
+	if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) {
+		vrele(newvp);
+		m_freem(mrep);
+		return (error);
+	}
+	m_freem(mrep);
+	*vpp = newvp;
+	if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
+		cnp->cn_flags |= SAVENAME;
+	if ((cnp->cn_flags & MAKEENTRY) &&
+	    (cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) {
+		if ((nmp->nm_flag & NFSMNT_NQNFS) == 0)
+			np->n_ctime = np->n_vattr.va_ctime.ts_sec;
+		else if (nqlflag && reqtime > time.tv_sec)
+			nqnfs_clientlease(nmp, np, nqlflag, cachable, reqtime,
+				frev);
+		cache_enter(dvp, *vpp, cnp);
+	}
+	return (0);
+}
+
+/*
+ * nfs read call.
+ * Just call nfs_bioread() to do the work.
+ */
+int
+nfs_read(ap)
+	struct vop_read_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		int  a_ioflag;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+
+	if (vp->v_type != VREG)
+		return (EPERM);
+	return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred));
+}
+
+/*
+ * nfs readlink call
+ */
+int
+nfs_readlink(ap)
+	struct vop_readlink_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+
+	if (vp->v_type != VLNK)
+		return (EPERM);
+	return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred));
+}
+
+/*
+ * Do a readlink rpc.
+ * Called by nfs_doio() from below the buffer cache.
+ */
+int
+nfs_readlinkrpc(vp, uiop, cred)
+	register struct vnode *vp;
+	struct uio *uiop;
+	struct ucred *cred;
+{
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1;
+	caddr_t bpos, dpos, cp2;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	long len;
+
+	nfsstats.rpccnt[NFSPROC_READLINK]++;
+	nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH);
+	nfsm_fhtom(vp);
+	nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred);
+	nfsm_strsiz(len, NFS_MAXPATHLEN);
+	nfsm_mtouio(uiop, len);
+	nfsm_reqdone;
+	return (error);
+}
+
+/*
+ * nfs read rpc call
+ * Ditto above
+ */
+int
+nfs_readrpc(vp, uiop, cred)
+	register struct vnode *vp;
+	struct uio *uiop;
+	struct ucred *cred;
+{
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1;
+	caddr_t bpos, dpos, cp2;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct nfsmount *nmp;
+	long len, retlen, tsiz;
+
+	nmp = VFSTONFS(vp->v_mount);
+	tsiz = uiop->uio_resid;
+	if (uiop->uio_offset + tsiz > 0xffffffff &&
+	    (nmp->nm_flag & NFSMNT_NQNFS) == 0)
+		return (EFBIG);
+	while (tsiz > 0) {
+		nfsstats.rpccnt[NFSPROC_READ]++;
+		len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz;
+		nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3);
+		nfsm_fhtom(vp);
+		nfsm_build(tl, u_long *, NFSX_UNSIGNED*3);
+		if (nmp->nm_flag & NFSMNT_NQNFS) {
+			txdr_hyper(&uiop->uio_offset, tl);
+			*(tl + 2) = txdr_unsigned(len);
+		} else {
+			*tl++ = txdr_unsigned(uiop->uio_offset);
+			*tl++ = txdr_unsigned(len);
+			*tl = 0;
+		}
+		nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred);
+		nfsm_loadattr(vp, (struct vattr *)0);
+		nfsm_strsiz(retlen, nmp->nm_rsize);
+		nfsm_mtouio(uiop, retlen);
+		m_freem(mrep);
+		if (retlen < len)
+			tsiz = 0;
+		else
+			tsiz -= len;
+	}
+nfsmout:
+	return (error);
+}
+
+/*
+ * nfs write call
+ */
+int
+nfs_writerpc(vp, uiop, cred, ioflags)
+	register struct vnode *vp;
+	struct uio *uiop;
+	struct ucred *cred;
+	int ioflags;
+{
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1;
+	caddr_t bpos, dpos, cp2;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct nfsmount *nmp;
+	struct nfsnode *np = VTONFS(vp);
+	u_quad_t frev;
+	long len, tsiz;
+
+	nmp = VFSTONFS(vp->v_mount);
+	tsiz = uiop->uio_resid;
+	if (uiop->uio_offset + tsiz > 0xffffffff &&
+	    (nmp->nm_flag & NFSMNT_NQNFS) == 0)
+		return (EFBIG);
+	while (tsiz > 0) {
+		nfsstats.rpccnt[NFSPROC_WRITE]++;
+		len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz;
+		nfsm_reqhead(vp, NFSPROC_WRITE,
+			NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len));
+		nfsm_fhtom(vp);
+		nfsm_build(tl, u_long *, NFSX_UNSIGNED * 4);
+		if (nmp->nm_flag & NFSMNT_NQNFS) {
+			txdr_hyper(&uiop->uio_offset, tl);
+			tl += 2;
+			if (ioflags & IO_APPEND)
+				*tl++ = txdr_unsigned(1);
+			else
+				*tl++ = 0;
+		} else {
+			*++tl = txdr_unsigned(uiop->uio_offset);
+			tl += 2;
+		}
+		*tl = txdr_unsigned(len);
+		nfsm_uiotom(uiop, len);
+		nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred);
+		nfsm_loadattr(vp, (struct vattr *)0);
+		if (nmp->nm_flag & NFSMNT_MYWRITE)
+			VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.ts_sec;
+		else if ((nmp->nm_flag & NFSMNT_NQNFS) &&
+			 NQNFS_CKCACHABLE(vp, NQL_WRITE)) {
+			nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
+			fxdr_hyper(tl, &frev);
+			if (frev > np->n_brev)
+				np->n_brev = frev;
+		}
+		m_freem(mrep);
+		tsiz -= len;
+	}
+nfsmout:
+	if (error)
+		uiop->uio_resid = tsiz;
+	return (error);
+}
+
+/*
+ * nfs mknod call
+ * This is a kludge. Use a create rpc but with the IFMT bits of the mode
+ * set to specify the file type and the size field for rdev.
+ */
+/* ARGSUSED */
+int
+nfs_mknod(ap)
+	struct vop_mknod_args /* {
+		struct vnode *a_dvp;
+		struct vnode **a_vpp;
+		struct componentname *a_cnp;
+		struct vattr *a_vap;
+	} */ *ap;
+{
+	register struct vnode *dvp = ap->a_dvp;
+	register struct vattr *vap = ap->a_vap;
+	register struct componentname *cnp = ap->a_cnp;
+	register struct nfsv2_sattr *sp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1, t2;
+	struct vnode *newvp;
+	struct vattr vattr;
+	char *cp2;
+	caddr_t bpos, dpos;
+	int error = 0, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	u_long rdev;
+
+	isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	if (vap->va_type == VCHR || vap->va_type == VBLK)
+		rdev = txdr_unsigned(vap->va_rdev);
+#ifdef FIFO
+	else if (vap->va_type == VFIFO)
+		rdev = 0xffffffff;
+#endif /* FIFO */
+	else {
+		VOP_ABORTOP(dvp, cnp);
+		vput(dvp);
+		return (EOPNOTSUPP);
+	}
+	if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) {
+		VOP_ABORTOP(dvp, cnp);
+		vput(dvp);
+		return (error);
+	}
+	nfsstats.rpccnt[NFSPROC_CREATE]++;
+	nfsm_reqhead(dvp, NFSPROC_CREATE,
+	  NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq));
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq));
+	sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode);
+	sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
+	sp->sa_gid = txdr_unsigned(vattr.va_gid);
+	if (isnq) {
+		sp->sa_nqrdev = rdev;
+		sp->sa_nqflags = 0;
+		txdr_nqtime(&vap->va_atime, &sp->sa_nqatime);
+		txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime);
+	} else {
+		sp->sa_nfssize = rdev;
+		txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime);
+		txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime);
+	}
+	nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred);
+	nfsm_mtofh(dvp, newvp);
+	nfsm_reqdone;
+	if (!error && (cnp->cn_flags & MAKEENTRY))
+		cache_enter(dvp, newvp, cnp);
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	VTONFS(dvp)->n_flag |= NMODIFIED;
+	VTONFS(dvp)->n_attrstamp = 0;
+	vrele(dvp);
+	return (error);
+}
+
+/*
+ * nfs file create call
+ */
+int
+nfs_create(ap)
+	struct vop_create_args /* {
+		struct vnode *a_dvp;
+		struct vnode **a_vpp;
+		struct componentname *a_cnp;
+		struct vattr *a_vap;
+	} */ *ap;
+{
+	register struct vnode *dvp = ap->a_dvp;
+	register struct vattr *vap = ap->a_vap;
+	register struct componentname *cnp = ap->a_cnp;
+	register struct nfsv2_sattr *sp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1, t2;
+	caddr_t bpos, dpos, cp2;
+	int error = 0, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct vattr vattr;
+
+	if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) {
+		VOP_ABORTOP(dvp, cnp);
+		vput(dvp);
+		return (error);
+	}
+	nfsstats.rpccnt[NFSPROC_CREATE]++;
+	isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	nfsm_reqhead(dvp, NFSPROC_CREATE,
+	  NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR(isnq));
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq));
+	sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode);
+	sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
+	sp->sa_gid = txdr_unsigned(vattr.va_gid);
+	if (isnq) {
+		u_quad_t qval = 0;
+
+		txdr_hyper(&qval, &sp->sa_nqsize);
+		sp->sa_nqflags = 0;
+		sp->sa_nqrdev = -1;
+		txdr_nqtime(&vap->va_atime, &sp->sa_nqatime);
+		txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime);
+	} else {
+		sp->sa_nfssize = 0;
+		txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime);
+		txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime);
+	}
+	nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred);
+	nfsm_mtofh(dvp, *ap->a_vpp);
+	nfsm_reqdone;
+	if (!error && (cnp->cn_flags & MAKEENTRY))
+		cache_enter(dvp, *ap->a_vpp, cnp);
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	VTONFS(dvp)->n_flag |= NMODIFIED;
+	VTONFS(dvp)->n_attrstamp = 0;
+	vrele(dvp);
+	return (error);
+}
+
+/*
+ * nfs file remove call
+ * To try and make nfs semantics closer to ufs semantics, a file that has
+ * other processes using the vnode is renamed instead of removed and then
+ * removed later on the last close.
+ * - If v_usecount > 1
+ *	  If a rename is not already in the works
+ *	     call nfs_sillyrename() to set it up
+ *     else
+ *	  do the remove rpc
+ */
+int
+nfs_remove(ap)
+	struct vop_remove_args /* {
+		struct vnodeop_desc *a_desc;
+		struct vnode * a_dvp;
+		struct vnode * a_vp;
+		struct componentname * a_cnp;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct vnode *dvp = ap->a_dvp;
+	register struct componentname *cnp = ap->a_cnp;
+	register struct nfsnode *np = VTONFS(vp);
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	if (vp->v_usecount > 1) {
+		if (!np->n_sillyrename)
+			error = nfs_sillyrename(dvp, vp, cnp);
+	} else {
+		/*
+		 * Purge the name cache so that the chance of a lookup for
+		 * the name succeeding while the remove is in progress is
+		 * minimized. Without node locking it can still happen, such
+		 * that an I/O op returns ESTALE, but since you get this if
+		 * another host removes the file..
+		 */
+		cache_purge(vp);
+		/*
+		 * Throw away biocache buffers. Mainly to avoid
+		 * unnecessary delayed writes.
+		 */
+		error = nfs_vinvalbuf(vp, 0, cnp->cn_cred, cnp->cn_proc, 1);
+		if (error == EINTR)
+			return (error);
+		/* Do the rpc */
+		nfsstats.rpccnt[NFSPROC_REMOVE]++;
+		nfsm_reqhead(dvp, NFSPROC_REMOVE,
+			NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
+		nfsm_fhtom(dvp);
+		nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+		nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred);
+		nfsm_reqdone;
+		FREE(cnp->cn_pnbuf, M_NAMEI);
+		VTONFS(dvp)->n_flag |= NMODIFIED;
+		VTONFS(dvp)->n_attrstamp = 0;
+		/*
+		 * Kludge City: If the first reply to the remove rpc is lost..
+		 *   the reply to the retransmitted request will be ENOENT
+		 *   since the file was in fact removed
+		 *   Therefore, we cheat and return success.
+		 */
+		if (error == ENOENT)
+			error = 0;
+	}
+	np->n_attrstamp = 0;
+	vrele(dvp);
+	vrele(vp);
+	return (error);
+}
+
+/*
+ * nfs file remove rpc called from nfs_inactive
+ */
+int
+nfs_removeit(sp)
+	register struct sillyrename *sp;
+{
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	nfsstats.rpccnt[NFSPROC_REMOVE]++;
+	nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE,
+		NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen));
+	nfsm_fhtom(sp->s_dvp);
+	nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN);
+	nfsm_request(sp->s_dvp, NFSPROC_REMOVE, NULL, sp->s_cred);
+	nfsm_reqdone;
+	VTONFS(sp->s_dvp)->n_flag |= NMODIFIED;
+	VTONFS(sp->s_dvp)->n_attrstamp = 0;
+	return (error);
+}
+
+/*
+ * nfs file rename call
+ */
+int
+nfs_rename(ap)
+	struct vop_rename_args  /* {
+		struct vnode *a_fdvp;
+		struct vnode *a_fvp;
+		struct componentname *a_fcnp;
+		struct vnode *a_tdvp;
+		struct vnode *a_tvp;
+		struct componentname *a_tcnp;
+	} */ *ap;
+{
+	register struct vnode *fvp = ap->a_fvp;
+	register struct vnode *tvp = ap->a_tvp;
+	register struct vnode *fdvp = ap->a_fdvp;
+	register struct vnode *tdvp = ap->a_tdvp;
+	register struct componentname *tcnp = ap->a_tcnp;
+	register struct componentname *fcnp = ap->a_fcnp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	/* Check for cross-device rename */
+	if ((fvp->v_mount != tdvp->v_mount) ||
+	    (tvp && (fvp->v_mount != tvp->v_mount))) {
+		error = EXDEV;
+		goto out;
+	}
+
+
+	nfsstats.rpccnt[NFSPROC_RENAME]++;
+	nfsm_reqhead(fdvp, NFSPROC_RENAME,
+		(NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+
+		nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/
+	nfsm_fhtom(fdvp);
+	nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_fhtom(tdvp);
+	nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred);
+	nfsm_reqdone;
+	VTONFS(fdvp)->n_flag |= NMODIFIED;
+	VTONFS(fdvp)->n_attrstamp = 0;
+	VTONFS(tdvp)->n_flag |= NMODIFIED;
+	VTONFS(tdvp)->n_attrstamp = 0;
+	if (fvp->v_type == VDIR) {
+		if (tvp != NULL && tvp->v_type == VDIR)
+			cache_purge(tdvp);
+		cache_purge(fdvp);
+	}
+out:
+	if (tdvp == tvp)
+		vrele(tdvp);
+	else
+		vput(tdvp);
+	if (tvp)
+		vput(tvp);
+	vrele(fdvp);
+	vrele(fvp);
+	/*
+	 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
+	 */
+	if (error == ENOENT)
+		error = 0;
+	return (error);
+}
+
+/*
+ * nfs file rename rpc called from nfs_remove() above
+ */
+int
+nfs_renameit(sdvp, scnp, sp)
+	struct vnode *sdvp;
+	struct componentname *scnp;
+	register struct sillyrename *sp;
+{
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	nfsstats.rpccnt[NFSPROC_RENAME]++;
+	nfsm_reqhead(sdvp, NFSPROC_RENAME,
+		(NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+
+		nfsm_rndup(sp->s_namlen));
+	nfsm_fhtom(sdvp);
+	nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_fhtom(sdvp);
+	nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN);
+	nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred);
+	nfsm_reqdone;
+	FREE(scnp->cn_pnbuf, M_NAMEI);
+	VTONFS(sdvp)->n_flag |= NMODIFIED;
+	VTONFS(sdvp)->n_attrstamp = 0;
+	return (error);
+}
+
+/*
+ * nfs hard link create call
+ */
+int
+nfs_link(ap)
+	struct vop_link_args /* {
+		struct vnode *a_vp;
+		struct vnode *a_tdvp;
+		struct componentname *a_cnp;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct vnode *tdvp = ap->a_tdvp;
+	register struct componentname *cnp = ap->a_cnp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	if (vp->v_mount != tdvp->v_mount) {
+		/*VOP_ABORTOP(vp, cnp);*/
+		if (tdvp == vp)
+			vrele(vp);
+		else
+			vput(vp);
+		return (EXDEV);
+	}
+
+	nfsstats.rpccnt[NFSPROC_LINK]++;
+	nfsm_reqhead(tdvp, NFSPROC_LINK,
+		NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
+	nfsm_fhtom(tdvp);
+	nfsm_fhtom(vp);
+	nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_request(tdvp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred);
+	nfsm_reqdone;
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	VTONFS(tdvp)->n_attrstamp = 0;
+	VTONFS(tdvp)->n_flag |= NMODIFIED;
+	VTONFS(vp)->n_attrstamp = 0;
+	vrele(vp);
+	/*
+	 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
+	 */
+	if (error == EEXIST)
+		error = 0;
+	return (error);
+}
+
+/*
+ * nfs symbolic link create call
+ */
+/* start here */
+int
+nfs_symlink(ap)
+	struct vop_symlink_args /* {
+		struct vnode *a_dvp;
+		struct vnode **a_vpp;
+		struct componentname *a_cnp;
+		struct vattr *a_vap;
+		char *a_target;
+	} */ *ap;
+{
+	register struct vnode *dvp = ap->a_dvp;
+	register struct vattr *vap = ap->a_vap;
+	register struct componentname *cnp = ap->a_cnp;
+	register struct nfsv2_sattr *sp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int slen, error = 0, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	nfsstats.rpccnt[NFSPROC_SYMLINK]++;
+	slen = strlen(ap->a_target);
+	isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH+2*NFSX_UNSIGNED+
+	    nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR(isnq));
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_strtom(ap->a_target, slen, NFS_MAXPATHLEN);
+	nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq));
+	sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode);
+	sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
+	sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid);
+	if (isnq) {
+		quad_t qval = -1;
+
+		txdr_hyper(&qval, &sp->sa_nqsize);
+		sp->sa_nqflags = 0;
+		txdr_nqtime(&vap->va_atime, &sp->sa_nqatime);
+		txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime);
+	} else {
+		sp->sa_nfssize = -1;
+		txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime);
+		txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime);
+	}
+	nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred);
+	nfsm_reqdone;
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	VTONFS(dvp)->n_flag |= NMODIFIED;
+	VTONFS(dvp)->n_attrstamp = 0;
+	vrele(dvp);
+	/*
+	 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
+	 */
+	if (error == EEXIST)
+		error = 0;
+	return (error);
+}
+
+/*
+ * nfs make dir call
+ */
+int
+nfs_mkdir(ap)
+	struct vop_mkdir_args /* {
+		struct vnode *a_dvp;
+		struct vnode **a_vpp;
+		struct componentname *a_cnp;
+		struct vattr *a_vap;
+	} */ *ap;
+{
+	register struct vnode *dvp = ap->a_dvp;
+	register struct vattr *vap = ap->a_vap;
+	register struct componentname *cnp = ap->a_cnp;
+	register struct vnode **vpp = ap->a_vpp;
+	register struct nfsv2_sattr *sp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1, t2;
+	register int len;
+	caddr_t bpos, dpos, cp2;
+	int error = 0, firsttry = 1, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct vattr vattr;
+
+	if (error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc)) {
+		VOP_ABORTOP(dvp, cnp);
+		vput(dvp);
+		return (error);
+	}
+	len = cnp->cn_namelen;
+	isnq = (VFSTONFS(dvp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	nfsstats.rpccnt[NFSPROC_MKDIR]++;
+	nfsm_reqhead(dvp, NFSPROC_MKDIR,
+	  NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR(isnq));
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
+	nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR(isnq));
+	sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode);
+	sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
+	sp->sa_gid = txdr_unsigned(vattr.va_gid);
+	if (isnq) {
+		quad_t qval = -1;
+
+		txdr_hyper(&qval, &sp->sa_nqsize);
+		sp->sa_nqflags = 0;
+		txdr_nqtime(&vap->va_atime, &sp->sa_nqatime);
+		txdr_nqtime(&vap->va_mtime, &sp->sa_nqmtime);
+	} else {
+		sp->sa_nfssize = -1;
+		txdr_nfstime(&vap->va_atime, &sp->sa_nfsatime);
+		txdr_nfstime(&vap->va_mtime, &sp->sa_nfsmtime);
+	}
+	nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred);
+	nfsm_mtofh(dvp, *vpp);
+	nfsm_reqdone;
+	VTONFS(dvp)->n_flag |= NMODIFIED;
+	VTONFS(dvp)->n_attrstamp = 0;
+	/*
+	 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry
+	 * if we can succeed in looking up the directory.
+	 * "firsttry" is necessary since the macros may "goto nfsmout" which
+	 * is above the if on errors. (Ugh)
+	 */
+	if (error == EEXIST && firsttry) {
+		firsttry = 0;
+		error = 0;
+		nfsstats.rpccnt[NFSPROC_LOOKUP]++;
+		*vpp = NULL;
+		nfsm_reqhead(dvp, NFSPROC_LOOKUP,
+		    NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
+		nfsm_fhtom(dvp);
+		nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
+		nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred);
+		nfsm_mtofh(dvp, *vpp);
+		if ((*vpp)->v_type != VDIR) {
+			vput(*vpp);
+			error = EEXIST;
+		}
+		m_freem(mrep);
+	}
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	vrele(dvp);
+	return (error);
+}
+
+/*
+ * nfs remove directory call
+ */
+int
+nfs_rmdir(ap)
+	struct vop_rmdir_args /* {
+		struct vnode *a_dvp;
+		struct vnode *a_vp;
+		struct componentname *a_cnp;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct vnode *dvp = ap->a_dvp;
+	register struct componentname *cnp = ap->a_cnp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t2;
+	caddr_t bpos, dpos;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+
+	if (dvp == vp) {
+		vrele(dvp);
+		vrele(dvp);
+		FREE(cnp->cn_pnbuf, M_NAMEI);
+		return (EINVAL);
+	}
+	nfsstats.rpccnt[NFSPROC_RMDIR]++;
+	nfsm_reqhead(dvp, NFSPROC_RMDIR,
+		NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
+	nfsm_fhtom(dvp);
+	nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
+	nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred);
+	nfsm_reqdone;
+	FREE(cnp->cn_pnbuf, M_NAMEI);
+	VTONFS(dvp)->n_flag |= NMODIFIED;
+	VTONFS(dvp)->n_attrstamp = 0;
+	cache_purge(dvp);
+	cache_purge(vp);
+	vrele(vp);
+	vrele(dvp);
+	/*
+	 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
+	 */
+	if (error == ENOENT)
+		error = 0;
+	return (error);
+}
+
+/*
+ * nfs readdir call
+ * Although cookie is defined as opaque, I translate it to/from net byte
+ * order so that it looks more sensible. This appears consistent with the
+ * Ultrix implementation of NFS.
+ */
+int
+nfs_readdir(ap)
+	struct vop_readdir_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	register struct uio *uio = ap->a_uio;
+	int tresid, error;
+	struct vattr vattr;
+
+	if (vp->v_type != VDIR)
+		return (EPERM);
+	/*
+	 * First, check for hit on the EOF offset cache
+	 */
+	if (uio->uio_offset != 0 && uio->uio_offset == np->n_direofoffset &&
+	    (np->n_flag & NMODIFIED) == 0) {
+		if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) {
+			if (NQNFS_CKCACHABLE(vp, NQL_READ)) {
+				nfsstats.direofcache_hits++;
+				return (0);
+			}
+		} else if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 &&
+			np->n_mtime == vattr.va_mtime.ts_sec) {
+			nfsstats.direofcache_hits++;
+			return (0);
+		}
+	}
+
+	/*
+	 * Call nfs_bioread() to do the real work.
+	 */
+	tresid = uio->uio_resid;
+	error = nfs_bioread(vp, uio, 0, ap->a_cred);
+
+	if (!error && uio->uio_resid == tresid)
+		nfsstats.direofcache_misses++;
+	return (error);
+}
+
+/*
+ * Readdir rpc call.
+ * Called from below the buffer cache by nfs_doio().
+ */
+int
+nfs_readdirrpc(vp, uiop, cred)
+	register struct vnode *vp;
+	struct uio *uiop;
+	struct ucred *cred;
+{
+	register long len;
+	register struct dirent *dp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1;
+	long tlen, lastlen;
+	caddr_t bpos, dpos, cp2;
+	int error = 0;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct mbuf *md2;
+	caddr_t dpos2;
+	int siz;
+	int more_dirs = 1;
+	u_long off, savoff;
+	struct dirent *savdp;
+	struct nfsmount *nmp;
+	struct nfsnode *np = VTONFS(vp);
+	long tresid;
+
+	nmp = VFSTONFS(vp->v_mount);
+	tresid = uiop->uio_resid;
+	/*
+	 * Loop around doing readdir rpc's of size uio_resid or nm_rsize,
+	 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ.
+	 * The stopping criteria is EOF or buffer full.
+	 */
+	while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) {
+		nfsstats.rpccnt[NFSPROC_READDIR]++;
+		nfsm_reqhead(vp, NFSPROC_READDIR,
+			NFSX_FH + 2 * NFSX_UNSIGNED);
+		nfsm_fhtom(vp);
+		nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
+		off = (u_long)uiop->uio_offset;
+		*tl++ = txdr_unsigned(off);
+		*tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ?
+			nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1));
+		nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred);
+		siz = 0;
+		nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+		more_dirs = fxdr_unsigned(int, *tl);
+	
+		/* Save the position so that we can do nfsm_mtouio() later */
+		dpos2 = dpos;
+		md2 = md;
+	
+		/* loop thru the dir entries, doctoring them to 4bsd form */
+#ifdef lint
+		dp = (struct dirent *)0;
+#endif /* lint */
+		while (more_dirs && siz < uiop->uio_resid) {
+			savoff = off;		/* Hold onto offset and dp */
+			savdp = dp;
+			nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
+			dp = (struct dirent *)tl;
+			dp->d_fileno = fxdr_unsigned(u_long, *tl++);
+			len = fxdr_unsigned(int, *tl);
+			if (len <= 0 || len > NFS_MAXNAMLEN) {
+				error = EBADRPC;
+				m_freem(mrep);
+				goto nfsmout;
+			}
+			dp->d_namlen = (u_char)len;
+			dp->d_type = DT_UNKNOWN;
+			nfsm_adv(len);		/* Point past name */
+			tlen = nfsm_rndup(len);
+			/*
+			 * This should not be necessary, but some servers have
+			 * broken XDR such that these bytes are not null filled.
+			 */
+			if (tlen != len) {
+				*dpos = '\0';	/* Null-terminate */
+				nfsm_adv(tlen - len);
+				len = tlen;
+			}
+			nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
+			off = fxdr_unsigned(u_long, *tl);
+			*tl++ = 0;	/* Ensures null termination of name */
+			more_dirs = fxdr_unsigned(int, *tl);
+			dp->d_reclen = len + 4 * NFSX_UNSIGNED;
+			siz += dp->d_reclen;
+		}
+		/*
+		 * If at end of rpc data, get the eof boolean
+		 */
+		if (!more_dirs) {
+			nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+			more_dirs = (fxdr_unsigned(int, *tl) == 0);
+
+			/*
+			 * If at EOF, cache directory offset
+			 */
+			if (!more_dirs)
+				np->n_direofoffset = off;
+		}
+		/*
+		 * If there is too much to fit in the data buffer, use savoff and
+		 * savdp to trim off the last record.
+		 * --> we are not at eof
+		 */
+		if (siz > uiop->uio_resid) {
+			off = savoff;
+			siz -= dp->d_reclen;
+			dp = savdp;
+			more_dirs = 0;	/* Paranoia */
+		}
+		if (siz > 0) {
+			lastlen = dp->d_reclen;
+			md = md2;
+			dpos = dpos2;
+			nfsm_mtouio(uiop, siz);
+			uiop->uio_offset = (off_t)off;
+		} else
+			more_dirs = 0;	/* Ugh, never happens, but in case.. */
+		m_freem(mrep);
+	}
+	/*
+	 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ
+	 * by increasing d_reclen for the last record.
+	 */
+	if (uiop->uio_resid < tresid) {
+		len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1);
+		if (len > 0) {
+			dp = (struct dirent *)
+				(uiop->uio_iov->iov_base - lastlen);
+			dp->d_reclen += len;
+			uiop->uio_iov->iov_base += len;
+			uiop->uio_iov->iov_len -= len;
+			uiop->uio_resid -= len;
+		}
+	}
+nfsmout:
+	return (error);
+}
+
+/*
+ * Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc().
+ */
+int
+nfs_readdirlookrpc(vp, uiop, cred)
+	struct vnode *vp;
+	register struct uio *uiop;
+	struct ucred *cred;
+{
+	register int len;
+	register struct dirent *dp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1;
+	caddr_t bpos, dpos, cp2;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	struct nameidata nami, *ndp = &nami;
+	struct componentname *cnp = &ndp->ni_cnd;
+	u_long off, endoff, fileno;
+	time_t reqtime, ltime;
+	struct nfsmount *nmp;
+	struct nfsnode *np;
+	struct vnode *newvp;
+	nfsv2fh_t *fhp;
+	u_quad_t frev;
+	int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i;
+	int cachable;
+
+	if (uiop->uio_iovcnt != 1)
+		panic("nfs rdirlook");
+	nmp = VFSTONFS(vp->v_mount);
+	tresid = uiop->uio_resid;
+	ndp->ni_dvp = vp;
+	newvp = NULLVP;
+	/*
+	 * Loop around doing readdir rpc's of size uio_resid or nm_rsize,
+	 * whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ.
+	 * The stopping criteria is EOF or buffer full.
+	 */
+	while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) {
+		nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++;
+		nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK,
+			NFSX_FH + 3 * NFSX_UNSIGNED);
+		nfsm_fhtom(vp);
+ 		nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED);
+		off = (u_long)uiop->uio_offset;
+		*tl++ = txdr_unsigned(off);
+		*tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ?
+			nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1));
+		if (nmp->nm_flag & NFSMNT_NQLOOKLEASE)
+			*tl = txdr_unsigned(nmp->nm_leaseterm);
+		else
+			*tl = 0;
+		reqtime = time.tv_sec;
+		nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred);
+		nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+		more_dirs = fxdr_unsigned(int, *tl);
+	
+		/* loop thru the dir entries, doctoring them to 4bsd form */
+		bigenough = 1;
+		while (more_dirs && bigenough) {
+			doit = 1;
+			nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED);
+			if (nmp->nm_flag & NFSMNT_NQLOOKLEASE) {
+				cachable = fxdr_unsigned(int, *tl++);
+				ltime = reqtime + fxdr_unsigned(int, *tl++);
+				fxdr_hyper(tl, &frev);
+			}
+			nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH);
+			if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
+				VREF(vp);
+				newvp = vp;
+				np = VTONFS(vp);
+			} else {
+				if (error = nfs_nget(vp->v_mount, fhp, &np))
+					doit = 0;
+				newvp = NFSTOV(np);
+			}
+			if (error = nfs_loadattrcache(&newvp, &md, &dpos,
+				(struct vattr *)0))
+				doit = 0;
+			nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
+			fileno = fxdr_unsigned(u_long, *tl++);
+			len = fxdr_unsigned(int, *tl);
+			if (len <= 0 || len > NFS_MAXNAMLEN) {
+				error = EBADRPC;
+				m_freem(mrep);
+				goto nfsmout;
+			}
+			tlen = (len + 4) & ~0x3;
+			if ((tlen + DIRHDSIZ) > uiop->uio_resid)
+				bigenough = 0;
+			if (bigenough && doit) {
+				dp = (struct dirent *)uiop->uio_iov->iov_base;
+				dp->d_fileno = fileno;
+				dp->d_namlen = len;
+				dp->d_reclen = tlen + DIRHDSIZ;
+				dp->d_type =
+				    IFTODT(VTTOIF(np->n_vattr.va_type));
+				uiop->uio_resid -= DIRHDSIZ;
+				uiop->uio_iov->iov_base += DIRHDSIZ;
+				uiop->uio_iov->iov_len -= DIRHDSIZ;
+				cnp->cn_nameptr = uiop->uio_iov->iov_base;
+				cnp->cn_namelen = len;
+				ndp->ni_vp = newvp;
+				nfsm_mtouio(uiop, len);
+				cp = uiop->uio_iov->iov_base;
+				tlen -= len;
+				for (i = 0; i < tlen; i++)
+					*cp++ = '\0';
+				uiop->uio_iov->iov_base += tlen;
+				uiop->uio_iov->iov_len -= tlen;
+				uiop->uio_resid -= tlen;
+				cnp->cn_hash = 0;
+				for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++)
+					cnp->cn_hash += (unsigned char)*cp * i;
+				if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) &&
+					ltime > time.tv_sec)
+					nqnfs_clientlease(nmp, np, NQL_READ,
+						cachable, ltime, frev);
+				if (cnp->cn_namelen <= NCHNAMLEN)
+				    cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp);
+			} else {
+				nfsm_adv(nfsm_rndup(len));
+			}
+			if (newvp != NULLVP) {
+				vrele(newvp);
+				newvp = NULLVP;
+			}
+			nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
+			if (bigenough)
+				endoff = off = fxdr_unsigned(u_long, *tl++);
+			else
+				endoff = fxdr_unsigned(u_long, *tl++);
+			more_dirs = fxdr_unsigned(int, *tl);
+		}
+		/*
+		 * If at end of rpc data, get the eof boolean
+		 */
+		if (!more_dirs) {
+			nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+			more_dirs = (fxdr_unsigned(int, *tl) == 0);
+
+			/*
+			 * If at EOF, cache directory offset
+			 */
+			if (!more_dirs)
+				VTONFS(vp)->n_direofoffset = endoff;
+		}
+		if (uiop->uio_resid < tresid)
+			uiop->uio_offset = (off_t)off;
+		else
+			more_dirs = 0;
+		m_freem(mrep);
+	}
+	/*
+	 * Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ
+	 * by increasing d_reclen for the last record.
+	 */
+	if (uiop->uio_resid < tresid) {
+		len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1);
+		if (len > 0) {
+			dp->d_reclen += len;
+			uiop->uio_iov->iov_base += len;
+			uiop->uio_iov->iov_len -= len;
+			uiop->uio_resid -= len;
+		}
+	}
+nfsmout:
+	if (newvp != NULLVP)
+		vrele(newvp);
+	return (error);
+}
+static char hextoasc[] = "0123456789abcdef";
+
+/*
+ * Silly rename. To make the NFS filesystem that is stateless look a little
+ * more like the "ufs" a remove of an active vnode is translated to a rename
+ * to a funny looking filename that is removed by nfs_inactive on the
+ * nfsnode. There is the potential for another process on a different client
+ * to create the same funny name between the nfs_lookitup() fails and the
+ * nfs_rename() completes, but...
+ */
+int
+nfs_sillyrename(dvp, vp, cnp)
+	struct vnode *dvp, *vp;
+	struct componentname *cnp;
+{
+	register struct nfsnode *np;
+	register struct sillyrename *sp;
+	int error;
+	short pid;
+
+	cache_purge(dvp);
+	np = VTONFS(vp);
+#ifdef SILLYSEPARATE
+	MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
+		M_NFSREQ, M_WAITOK);
+#else
+	sp = &np->n_silly;
+#endif
+	sp->s_cred = crdup(cnp->cn_cred);
+	sp->s_dvp = dvp;
+	VREF(dvp);
+
+	/* Fudge together a funny name */
+	pid = cnp->cn_proc->p_pid;
+	bcopy(".nfsAxxxx4.4", sp->s_name, 13);
+	sp->s_namlen = 12;
+	sp->s_name[8] = hextoasc[pid & 0xf];
+	sp->s_name[7] = hextoasc[(pid >> 4) & 0xf];
+	sp->s_name[6] = hextoasc[(pid >> 8) & 0xf];
+	sp->s_name[5] = hextoasc[(pid >> 12) & 0xf];
+
+	/* Try lookitups until we get one that isn't there */
+	while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) {
+		sp->s_name[4]++;
+		if (sp->s_name[4] > 'z') {
+			error = EINVAL;
+			goto bad;
+		}
+	}
+	if (error = nfs_renameit(dvp, cnp, sp))
+		goto bad;
+	nfs_lookitup(sp, &np->n_fh, cnp->cn_proc);
+	np->n_sillyrename = sp;
+	return (0);
+bad:
+	vrele(sp->s_dvp);
+	crfree(sp->s_cred);
+#ifdef SILLYSEPARATE
+	free((caddr_t)sp, M_NFSREQ);
+#endif
+	return (error);
+}
+
+/*
+ * Look up a file name for silly rename stuff.
+ * Just like nfs_lookup() except that it doesn't load returned values
+ * into the nfsnode table.
+ * If fhp != NULL it copies the returned file handle out
+ */
+int
+nfs_lookitup(sp, fhp, procp)
+	register struct sillyrename *sp;
+	nfsv2fh_t *fhp;
+	struct proc *procp;
+{
+	register struct vnode *vp = sp->s_dvp;
+	register u_long *tl;
+	register caddr_t cp;
+	register long t1, t2;
+	caddr_t bpos, dpos, cp2;
+	int error = 0, isnq;
+	struct mbuf *mreq, *mrep, *md, *mb, *mb2;
+	long len;
+
+	isnq = (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS);
+	nfsstats.rpccnt[NFSPROC_LOOKUP]++;
+	len = sp->s_namlen;
+	nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
+	if (isnq) {
+		nfsm_build(tl, u_long *, NFSX_UNSIGNED);
+		*tl = 0;
+	}
+	nfsm_fhtom(vp);
+	nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN);
+	nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred);
+	if (fhp != NULL) {
+		if (isnq)
+			nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
+		nfsm_dissect(cp, caddr_t, NFSX_FH);
+		bcopy(cp, (caddr_t)fhp, NFSX_FH);
+	}
+	nfsm_reqdone;
+	return (error);
+}
+
+/*
+ * Kludge City..
+ * - make nfs_bmap() essentially a no-op that does no translation
+ * - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc
+ *   after mapping the physical addresses into Kernel Virtual space in the
+ *   nfsiobuf area.
+ *   (Maybe I could use the process's page mapping, but I was concerned that
+ *    Kernel Write might not be enabled and also figured copyout() would do
+ *    a lot more work than bcopy() and also it currently happens in the
+ *    context of the swapper process (2).
+ */
+int
+nfs_bmap(ap)
+	struct vop_bmap_args /* {
+		struct vnode *a_vp;
+		daddr_t  a_bn;
+		struct vnode **a_vpp;
+		daddr_t *a_bnp;
+		int *a_runp;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+
+	if (ap->a_vpp != NULL)
+		*ap->a_vpp = vp;
+	if (ap->a_bnp != NULL)
+		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
+	return (0);
+}
+
+/*
+ * Strategy routine.
+ * For async requests when nfsiod(s) are running, queue the request by
+ * calling nfs_asyncio(), otherwise just all nfs_doio() to do the
+ * request.
+ */
+int
+nfs_strategy(ap)
+	struct vop_strategy_args *ap;
+{
+	register struct buf *bp = ap->a_bp;
+	struct ucred *cr;
+	struct proc *p;
+	int error = 0;
+
+	if (bp->b_flags & B_PHYS)
+		panic("nfs physio");
+	if (bp->b_flags & B_ASYNC)
+		p = (struct proc *)0;
+	else
+		p = curproc;	/* XXX */
+	if (bp->b_flags & B_READ)
+		cr = bp->b_rcred;
+	else
+		cr = bp->b_wcred;
+	/*
+	 * If the op is asynchronous and an i/o daemon is waiting
+	 * queue the request, wake it up and wait for completion
+	 * otherwise just do it ourselves.
+	 */
+	if ((bp->b_flags & B_ASYNC) == 0 ||
+		nfs_asyncio(bp, NOCRED))
+		error = nfs_doio(bp, cr, p);
+	return (error);
+}
+
+/*
+ * Mmap a file
+ *
+ * NB Currently unsupported.
+ */
+/* ARGSUSED */
+int
+nfs_mmap(ap)
+	struct vop_mmap_args /* {
+		struct vnode *a_vp;
+		int  a_fflags;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+
+	return (EINVAL);
+}
+
+/*
+ * Flush all the blocks associated with a vnode.
+ * 	Walk through the buffer pool and push any dirty pages
+ *	associated with the vnode.
+ */
+/* ARGSUSED */
+int
+nfs_fsync(ap)
+	struct vop_fsync_args /* {
+		struct vnodeop_desc *a_desc;
+		struct vnode * a_vp;
+		struct ucred * a_cred;
+		int  a_waitfor;
+		struct proc * a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	register struct buf *bp;
+	struct buf *nbp;
+	struct nfsmount *nmp;
+	int s, error = 0, slptimeo = 0, slpflag = 0;
+
+	nmp = VFSTONFS(vp->v_mount);
+	if (nmp->nm_flag & NFSMNT_INT)
+		slpflag = PCATCH;
+loop:
+	s = splbio();
+	for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) {
+		nbp = bp->b_vnbufs.le_next;
+		if (bp->b_flags & B_BUSY) {
+			if (ap->a_waitfor != MNT_WAIT)
+				continue;
+			bp->b_flags |= B_WANTED;
+			error = tsleep((caddr_t)bp, slpflag | (PRIBIO + 1),
+				"nfsfsync", slptimeo);
+			splx(s);
+			if (error) {
+			    if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p))
+				return (EINTR);
+			    if (slpflag == PCATCH) {
+				slpflag = 0;
+				slptimeo = 2 * hz;
+			    }
+			}
+			goto loop;
+		}
+		if ((bp->b_flags & B_DELWRI) == 0)
+			panic("nfs_fsync: not dirty");
+		bremfree(bp);
+		bp->b_flags |= B_BUSY;
+		splx(s);
+		bp->b_flags |= B_ASYNC;
+		VOP_BWRITE(bp);
+		goto loop;
+	}
+	splx(s);
+	if (ap->a_waitfor == MNT_WAIT) {
+		while (vp->v_numoutput) {
+			vp->v_flag |= VBWAIT;
+			error = tsleep((caddr_t)&vp->v_numoutput,
+				slpflag | (PRIBIO + 1), "nfsfsync", slptimeo);
+			if (error) {
+			    if (nfs_sigintr(nmp, (struct nfsreq *)0, ap->a_p))
+				return (EINTR);
+			    if (slpflag == PCATCH) {
+				slpflag = 0;
+				slptimeo = 2 * hz;
+			    }
+			}
+		}
+		if (vp->v_dirtyblkhd.lh_first) {
+#ifdef DIAGNOSTIC
+			vprint("nfs_fsync: dirty", vp);
+#endif
+			goto loop;
+		}
+	}
+	if (np->n_flag & NWRITEERR) {
+		error = np->n_error;
+		np->n_flag &= ~NWRITEERR;
+	}
+	return (error);
+}
+
+/*
+ * Return POSIX pathconf information applicable to nfs.
+ *
+ * Currently the NFS protocol does not support getting such
+ * information from the remote server.
+ */
+/* ARGSUSED */
+nfs_pathconf(ap)
+	struct vop_pathconf_args /* {
+		struct vnode *a_vp;
+		int a_name;
+		int *a_retval;
+	} */ *ap;
+{
+
+	return (EINVAL);
+}
+
+/*
+ * NFS advisory byte-level locks.
+ * Currently unsupported.
+ */
+int
+nfs_advlock(ap)
+	struct vop_advlock_args /* {
+		struct vnode *a_vp;
+		caddr_t  a_id;
+		int  a_op;
+		struct flock *a_fl;
+		int  a_flags;
+	} */ *ap;
+{
+
+	return (EOPNOTSUPP);
+}
+
+/*
+ * Print out the contents of an nfsnode.
+ */
+int
+nfs_print(ap)
+	struct vop_print_args /* {
+		struct vnode *a_vp;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+
+	printf("tag VT_NFS, fileid %d fsid 0x%x",
+		np->n_vattr.va_fileid, np->n_vattr.va_fsid);
+#ifdef FIFO
+	if (vp->v_type == VFIFO)
+		fifo_printinfo(vp);
+#endif /* FIFO */
+	printf("\n");
+}
+
+/*
+ * NFS directory offset lookup.
+ * Currently unsupported.
+ */
+int
+nfs_blkatoff(ap)
+	struct vop_blkatoff_args /* {
+		struct vnode *a_vp;
+		off_t a_offset;
+		char **a_res;
+		struct buf **a_bpp;
+	} */ *ap;
+{
+
+	return (EOPNOTSUPP);
+}
+
+/*
+ * NFS flat namespace allocation.
+ * Currently unsupported.
+ */
+int
+nfs_valloc(ap)
+	struct vop_valloc_args /* {
+		struct vnode *a_pvp;
+		int a_mode;
+		struct ucred *a_cred;
+		struct vnode **a_vpp;
+	} */ *ap;
+{
+
+	return (EOPNOTSUPP);
+}
+
+/*
+ * NFS flat namespace free.
+ * Currently unsupported.
+ */
+int
+nfs_vfree(ap)
+	struct vop_vfree_args /* {
+		struct vnode *a_pvp;
+		ino_t a_ino;
+		int a_mode;
+	} */ *ap;
+{
+
+	return (EOPNOTSUPP);
+}
+
+/*
+ * NFS file truncation.
+ */
+int
+nfs_truncate(ap)
+	struct vop_truncate_args /* {
+		struct vnode *a_vp;
+		off_t a_length;
+		int a_flags;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+
+	/* Use nfs_setattr */
+	printf("nfs_truncate: need to implement!!");
+	return (EOPNOTSUPP);
+}
+
+/*
+ * NFS update.
+ */
+int
+nfs_update(ap)
+	struct vop_update_args /* {
+		struct vnode *a_vp;
+		struct timeval *a_ta;
+		struct timeval *a_tm;
+		int a_waitfor;
+	} */ *ap;
+{
+
+	/* Use nfs_setattr */
+	printf("nfs_update: need to implement!!");
+	return (EOPNOTSUPP);
+}
+
+/*
+ * nfs special file access vnode op.
+ * Essentially just get vattr and then imitate iaccess() since the device is
+ * local to the client.
+ */
+int
+nfsspec_access(ap)
+	struct vop_access_args /* {
+		struct vnode *a_vp;
+		int  a_mode;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vattr *vap;
+	register gid_t *gp;
+	register struct ucred *cred = ap->a_cred;
+	mode_t mode = ap->a_mode;
+	struct vattr vattr;
+	register int i;
+	int error;
+
+	/*
+	 * If you're the super-user,
+	 * you always get access.
+	 */
+	if (cred->cr_uid == 0)
+		return (0);
+	vap = &vattr;
+	if (error = VOP_GETATTR(ap->a_vp, vap, cred, ap->a_p))
+		return (error);
+	/*
+	 * Access check is based on only one of owner, group, public.
+	 * If not owner, then check group. If not a member of the
+	 * group, then check public access.
+	 */
+	if (cred->cr_uid != vap->va_uid) {
+		mode >>= 3;
+		gp = cred->cr_groups;
+		for (i = 0; i < cred->cr_ngroups; i++, gp++)
+			if (vap->va_gid == *gp)
+				goto found;
+		mode >>= 3;
+found:
+		;
+	}
+	return ((vap->va_mode & mode) == mode ? 0 : EACCES);
+}
+
+/*
+ * Read wrapper for special devices.
+ */
+int
+nfsspec_read(ap)
+	struct vop_read_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		int  a_ioflag;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	register struct nfsnode *np = VTONFS(ap->a_vp);
+
+	/*
+	 * Set access flag.
+	 */
+	np->n_flag |= NACC;
+	np->n_atim = time;
+	return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap));
+}
+
+/*
+ * Write wrapper for special devices.
+ */
+int
+nfsspec_write(ap)
+	struct vop_write_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		int  a_ioflag;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	register struct nfsnode *np = VTONFS(ap->a_vp);
+
+	/*
+	 * Set update flag.
+	 */
+	np->n_flag |= NUPD;
+	np->n_mtim = time;
+	return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap));
+}
+
+/*
+ * Close wrapper for special devices.
+ *
+ * Update the times on the nfsnode then do device close.
+ */
+int
+nfsspec_close(ap)
+	struct vop_close_args /* {
+		struct vnode *a_vp;
+		int  a_fflag;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	struct vattr vattr;
+
+	if (np->n_flag & (NACC | NUPD)) {
+		np->n_flag |= NCHG;
+		if (vp->v_usecount == 1 &&
+		    (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
+			VATTR_NULL(&vattr);
+			if (np->n_flag & NACC) {
+				vattr.va_atime.ts_sec = np->n_atim.tv_sec;
+				vattr.va_atime.ts_nsec =
+				    np->n_atim.tv_usec * 1000;
+			}
+			if (np->n_flag & NUPD) {
+				vattr.va_mtime.ts_sec = np->n_mtim.tv_sec;
+				vattr.va_mtime.ts_nsec =
+				    np->n_mtim.tv_usec * 1000;
+			}
+			(void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p);
+		}
+	}
+	return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap));
+}
+
+#ifdef FIFO
+/*
+ * Read wrapper for fifos.
+ */
+int
+nfsfifo_read(ap)
+	struct vop_read_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		int  a_ioflag;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	extern int (**fifo_vnodeop_p)();
+	register struct nfsnode *np = VTONFS(ap->a_vp);
+
+	/*
+	 * Set access flag.
+	 */
+	np->n_flag |= NACC;
+	np->n_atim = time;
+	return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap));
+}
+
+/*
+ * Write wrapper for fifos.
+ */
+int
+nfsfifo_write(ap)
+	struct vop_write_args /* {
+		struct vnode *a_vp;
+		struct uio *a_uio;
+		int  a_ioflag;
+		struct ucred *a_cred;
+	} */ *ap;
+{
+	extern int (**fifo_vnodeop_p)();
+	register struct nfsnode *np = VTONFS(ap->a_vp);
+
+	/*
+	 * Set update flag.
+	 */
+	np->n_flag |= NUPD;
+	np->n_mtim = time;
+	return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap));
+}
+
+/*
+ * Close wrapper for fifos.
+ *
+ * Update the times on the nfsnode then do fifo close.
+ */
+int
+nfsfifo_close(ap)
+	struct vop_close_args /* {
+		struct vnode *a_vp;
+		int  a_fflag;
+		struct ucred *a_cred;
+		struct proc *a_p;
+	} */ *ap;
+{
+	register struct vnode *vp = ap->a_vp;
+	register struct nfsnode *np = VTONFS(vp);
+	struct vattr vattr;
+	extern int (**fifo_vnodeop_p)();
+
+	if (np->n_flag & (NACC | NUPD)) {
+		if (np->n_flag & NACC)
+			np->n_atim = time;
+		if (np->n_flag & NUPD)
+			np->n_mtim = time;
+		np->n_flag |= NCHG;
+		if (vp->v_usecount == 1 &&
+		    (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
+			VATTR_NULL(&vattr);
+			if (np->n_flag & NACC) {
+				vattr.va_atime.ts_sec = np->n_atim.tv_sec;
+				vattr.va_atime.ts_nsec =
+				    np->n_atim.tv_usec * 1000;
+			}
+			if (np->n_flag & NUPD) {
+				vattr.va_mtime.ts_sec = np->n_mtim.tv_sec;
+				vattr.va_mtime.ts_nsec =
+				    np->n_mtim.tv_usec * 1000;
+			}
+			(void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_p);
+		}
+	}
+	return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap));
+}
+#endif /* FIFO */