Import of xfs from arla-0.35.7

1 files changed, 948 insertions, 0 deletions

diff --git a/sys/xfs/xfs_vnodeops-common.c b/sys/xfs/xfs_vnodeops-common.c
new file mode 100644
index 00000000000..fee9b17acc8
--- /dev/null
+++ b/sys/xfs/xfs_vnodeops-common.c
@@ -0,0 +1,948 @@
+/*
+ * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * 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 Kungliga Tekniska
+ *      Högskolan and its contributors.
+ *
+ * 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+ */
+
+/*
+ * XFS operations.
+ */
+
+#include <xfs/xfs_locl.h>
+#include <xfs/xfs_message.h>
+#include <xfs/xfs_common.h>
+#include <xfs/xfs_fs.h>
+#include <xfs/xfs_dev.h>
+#include <xfs/xfs_deb.h>
+#include <xfs/xfs_syscalls.h>
+#include <xfs/xfs_vnodeops.h>
+
+RCSID("$Id: xfs_vnodeops-common.c,v 1.1 1999/04/30 01:59:01 art Exp $");
+
+int
+xfs_open_valid(struct vnode * vp, struct ucred * cred, u_int tok)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+
+    XFSDEB(XDEBVFOPS, ("xfs_open_valid\n"));
+
+    do {
+	if (!XFS_TOKEN_GOT(xn, tok)) {
+	    struct xfs_message_open msg;
+
+	    msg.header.opcode = XFS_MSG_OPEN;
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	    msg.handle = xn->handle;
+	    msg.tokens = tok;
+	    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	    if (error == 0)
+		error = ((struct xfs_message_wakeup *) & msg)->error;
+	} else {
+	    goto done;
+	}
+    } while (error == 0);
+
+done:
+    XFSDEB(XDEBVFOPS, ("xfs_open_valid: error = %d\n", error));
+
+    return error;
+}
+
+int
+xfs_attr_valid(struct vnode * vp, struct ucred * cred, u_int tok)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+    pag_t pag = xfs_get_pag(cred);
+
+    do {
+	if (!XFS_TOKEN_GOT(xn, tok)) {
+	    struct xfs_message_getattr msg;
+
+	    msg.header.opcode = XFS_MSG_GETATTR;
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = pag;
+	    msg.handle = xn->handle;
+	    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	    if (error == 0)
+		error = ((struct xfs_message_wakeup *) & msg)->error;
+	} else {
+	    goto done;
+	}
+    } while (error == 0);
+
+done:
+    return error;
+}
+
+int
+xfs_fetch_rights(struct vnode * vp, struct ucred * cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+
+    pag_t pag = xfs_get_pag(cred);
+
+    do {
+	if (!xfs_has_pag(xn, pag)) {
+	    struct xfs_message_getattr msg;
+
+	    msg.header.opcode = XFS_MSG_GETATTR;
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = pag;
+	    msg.handle = xn->handle;
+	    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	    if (error == 0)
+		error = ((struct xfs_message_wakeup *) & msg)->error;
+	} else {
+	    goto done;
+	}
+    } while (error == 0);
+
+done:
+
+    return error;
+}
+
+int
+xfs_data_valid(struct vnode * vp, struct ucred * cred, u_int tok)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+
+    do {
+	if (!XFS_TOKEN_GOT(xn, tok)) {
+	    struct xfs_message_getdata msg;
+
+	    msg.header.opcode = XFS_MSG_GETDATA;
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	    msg.handle = xn->handle;
+	    msg.tokens = tok;
+	    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	    if (error == 0)
+		error = ((struct xfs_message_wakeup *) & msg)->error;
+	} else {
+	    goto done;
+	}
+    } while (error == 0);
+
+done:
+    return error;
+}
+
+static int
+do_fsync(struct xfs * xfsp,
+	 struct xfs_node * xn,
+	 struct ucred * cred,
+	 u_int flag)
+{
+    int error;
+    struct xfs_message_putdata msg;
+
+    msg.header.opcode = XFS_MSG_PUTDATA;
+    if (cred != NOCRED) {
+	msg.cred.uid = cred->cr_uid;
+	msg.cred.pag = xfs_get_pag(cred);
+    } else {
+	msg.cred.uid = 0;
+	msg.cred.pag = XFS_ANONYMOUSID;
+    }
+    msg.handle = xn->handle;
+    vattr2xfs_attr(&xn->attr, &msg.attr);
+    msg.flag   = flag;
+
+    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+    if (error == 0)
+	error = ((struct xfs_message_wakeup *) & msg)->error;
+
+    if (error == 0)
+	xn->flags &= ~XFS_DATA_DIRTY;
+
+    return error;
+}
+
+int
+xfs_fsync_common(struct vnode *vp, struct ucred *cred,
+		 int waitfor, struct proc *proc)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_fsync: %p\n", vp));
+
+    /*
+     * It seems that fsync is sometimes called after reclaiming a node.
+     * In that case we just look happy.
+     */
+
+    if (xn == NULL) {
+	printf("XFS PANIC WARNING! xfs_fsync called after reclaiming!\n");
+	return 0;
+    }
+    
+    if (xn->flags & XFS_DATA_DIRTY)
+	error = do_fsync(xfsp, xn, cred, XFS_WRITE);
+
+    return error;
+}
+
+int
+xfs_close_common(struct vnode *vp, int fflag,
+		 struct proc *proc, struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+    
+    XFSDEB(XDEBVNOPS, ("xfs_close cred = %p\n", cred));
+
+    if (fflag & FWRITE && xn->flags & XFS_DATA_DIRTY)
+	error = do_fsync(xfsp, xn, cred, XFS_WRITE);
+
+    return error;
+}
+
+int
+xfs_read_common(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
+{
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_read\n"));
+
+    error = xfs_data_valid(vp, cred, XFS_DATA_R);
+
+    if (error == 0) {
+	struct vnode *t = DATA_FROM_VNODE(vp);
+
+	xfs_vfs_readlock(t, xfs_uio_to_proc(uio));
+#ifdef __osf__
+	VOP_READ(t, uio, ioflag, cred, error);
+#else /* __osf__ */
+	error = VOP_READ(t, uio, ioflag, cred);
+#endif /* __osf__ */
+	xfs_vfs_unlock(t, xfs_uio_to_proc(uio));
+    }
+    return error;
+}
+
+int
+xfs_write_common(struct vnode *vp, struct uio *uiop, int ioflag, struct ucred *cred)
+{
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_write\n"));
+
+    error = xfs_data_valid(vp, cred, XFS_DATA_W);
+
+    if (error == 0) {
+	struct xfs_node *xn = VNODE_TO_XNODE(vp);
+	struct vnode *t = DATA_FROM_XNODE(xn);
+	struct vattr sub_attr;
+	int error2 = 0;
+ 
+	xfs_vfs_writelock(t, xfs_uio_to_proc(uiop));
+#ifdef __osf__
+	VOP_WRITE(t, uiop, ioflag, cred, error);
+	VNODE_TO_XNODE(vp)->flags |= XFS_DATA_DIRTY;
+	VOP_GETATTR(t, &sub_attr, cred, error2);
+#else /* __osf__ */
+	error = VOP_WRITE(t, uiop, ioflag, cred);
+	VNODE_TO_XNODE(vp)->flags |= XFS_DATA_DIRTY;
+	error2 = VOP_GETATTR(t, &sub_attr, cred, uiop->uio_procp);
+#endif /* __osf__ */
+
+	if (error2 == 0) {
+	    xn->attr.va_size  = sub_attr.va_size;
+	    xn->attr.va_mtime = sub_attr.va_mtime;
+#ifdef HAVE_KERNEL_VNODE_PAGER_SETSIZE
+	    vnode_pager_setsize(vp, sub_attr.va_size);
+#endif
+	}
+	xfs_vfs_unlock(t, xfs_uio_to_proc(uiop));
+    }
+
+    return error;
+}
+
+int
+xfs_getattr_common(struct vnode *vp, struct vattr *vap, struct ucred *cred)
+{
+    int error = 0;
+
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+
+    XFSDEB(XDEBVNOPS, ("xfs_getattr\n"));
+
+    error = xfs_attr_valid(vp, cred, XFS_ATTR_R);
+    if (error == 0)
+	*vap = xn->attr;
+    return error;
+}
+
+int
+xfs_setattr_common(struct vnode *vp, struct vattr *vap, struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_setattr\n"));
+
+#define CHECK_XFSATTR(A, cast) (vap->A == cast VNOVAL || vap->A == xn->attr.A)
+	if (CHECK_XFSATTR(va_mode,(mode_t)) &&
+	    CHECK_XFSATTR(va_nlink,) &&
+	    CHECK_XFSATTR(va_size,) &&
+	    CHECK_XFSATTR(va_uid,) &&
+	    CHECK_XFSATTR(va_gid,) &&
+	    CHECK_XFSATTR(va_mtime.tv_sec,) &&
+	    CHECK_XFSATTR(va_fileid,) &&
+	    CHECK_XFSATTR(va_type,))
+		return 0;		/* Nothing to do */
+#undef CHECK_XFSATTR
+
+    if (XFS_TOKEN_GOT(xn, XFS_ATTR_W)) {
+	/* Update attributes and mark them dirty. */
+	VNODE_TO_XNODE(vp)->flags |= XFS_ATTR_DIRTY;
+	error = EINVAL;		       /* XXX not yet implemented */
+	goto done;
+    } else {
+	struct xfs_message_putattr msg;
+
+	msg.header.opcode = XFS_MSG_PUTATTR;
+	if (cred != NOCRED) {
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	} else {
+	    msg.cred.uid = 0;
+	    msg.cred.pag = XFS_ANONYMOUSID;
+	}
+	msg.handle = xn->handle;
+	vattr2xfs_attr(vap, &msg.attr);
+
+	XFS_TOKEN_CLEAR(xn, XFS_ATTR_VALID, XFS_ATTR_MASK);
+	error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	if (error == 0)
+	    error = ((struct xfs_message_wakeup *) & msg)->error;
+    }
+
+done:
+    return error;
+}
+
+static int
+check_rights (u_char rights, int mode)
+{
+    int error = 0;
+
+    if (mode & VREAD)
+	if ((rights & XFS_RIGHT_R) == 0)
+	    error = EACCES;
+    if (mode & VWRITE)
+	if ((rights & XFS_RIGHT_W) == 0)
+	    error = EACCES;
+    if (mode & VEXEC)
+	if ((rights & XFS_RIGHT_X) == 0)
+	    error = EACCES;
+    return error;
+}
+
+int
+xfs_access_common(struct vnode *vp, int mode, struct ucred *cred)
+{
+    int error = 0;
+    pag_t pag = xfs_get_pag(cred);
+
+    XFSDEB(XDEBVNOPS, ("xfs_access mode = 0%o\n", mode));
+
+    error = xfs_attr_valid(vp, cred, XFS_ATTR_R);
+    if (error == 0) {
+	struct xfs_node *xn = VNODE_TO_XNODE(vp);
+	int i;
+
+	error = check_rights (xn->anonrights, mode);
+
+	if (error == 0)
+	    goto done;
+
+	XFSDEB(XDEBVNOPS, ("xfs_access anonaccess failed\n"));
+
+	xfs_fetch_rights(vp, cred); /* ignore error */
+
+	error = EACCES;		/* default to EACCES if pag isn't in xn->id */
+
+	for (i = 0; i < MAXRIGHTS; i++)
+	    if (xn->id[i] == pag) {
+		error = check_rights (xn->rights[i], mode);
+		break;
+	    }
+    }
+
+done:
+    XFSDEB(XDEBVNOPS, ("xfs_access(0%o) = %d\n", mode, error));
+
+    return error;
+}
+
+int
+xfs_lookup_common(struct vnode *dvp, 
+		  xfs_componentname *cnp, 
+		  struct vnode **vpp)
+{
+    struct xfs_message_getnode msg;
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *d = VNODE_TO_XNODE(dvp);
+    int error = 0;
+    struct proc *proc  = xfs_cnp_to_proc(cnp);
+    struct ucred *cred = xfs_proc_to_cred(proc);
+
+    *vpp = NULL;
+
+    if (dvp->v_type != VDIR)
+	return ENOTDIR;
+    
+ again:
+
+    do {
+#ifdef __osf__
+	VOP_ACCESS(dvp, VEXEC, cred, error);
+#else
+	error = VOP_ACCESS(dvp, VEXEC, cred, xfs_cnp_to_proc(cnp));
+#endif
+	if (error != 0)
+	    goto done;
+
+	error = xfs_dnlc_lookup(dvp, cnp, vpp);
+	if (error == 0) {
+
+	    /*
+	     * Doesn't quite work.
+	     */
+
+#if 0
+	    if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME)
+		&& (cnp->cn_flags & ISLASTCN)) {
+		error = EJUSTRETURN;
+		goto done;
+	    }
+#endif
+
+	    msg.header.opcode = XFS_MSG_GETNODE;
+	    if (cnp->cn_cred != NOCRED) {
+		msg.cred.uid = cnp->cn_cred->cr_uid;
+		msg.cred.pag = xfs_get_pag(cnp->cn_cred);
+	    } else {
+		msg.cred.uid = 0;
+		msg.cred.pag = XFS_ANONYMOUSID;
+	    }
+	    msg.parent_handle = d->handle;
+
+	    bcopy(cnp->cn_nameptr, msg.name, cnp->cn_namelen);
+	    msg.name[cnp->cn_namelen] = '\0';
+
+	    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+
+	    if (error == 0)
+		error = ((struct xfs_message_wakeup *) & msg)->error;
+	    if(error == ENOENT && cnp->cn_nameiop != CREATE) {
+		XFSDEB(XDEBVNOPS, ("xfs_lookup: neg cache %p (%s, %ld)\n",
+				   dvp,
+				   cnp->cn_nameptr, cnp->cn_namelen));
+		xfs_dnlc_enter (dvp, cnp, NULL);
+	    }
+	} else if (error == -1) {
+	    if (xfs_do_vget(*vpp, LK_EXCLUSIVE, xfs_cnp_to_proc(cnp)))
+		    goto again;
+	    error = 0;
+	    goto done;
+	}
+    } while (error == 0);
+
+done:
+    return error;
+}
+
+int
+xfs_lookup_name(struct vnode *dvp, 
+		const char *name,
+		struct proc *proc,
+		struct ucred *cred,
+		struct vnode **vpp)
+{
+    xfs_componentname cn;
+
+    xfs_cnp_init (&cn, name, NULL, dvp, proc, cred, CREATE);
+    return xfs_lookup_common (dvp, &cn, vpp);
+}    
+
+int
+xfs_create_common(struct vnode *dvp,
+		  const char *name,
+		  struct vattr *vap, 
+		  struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_create: (%s)\n", name));
+    {
+	struct xfs_message_create msg;
+
+	msg.header.opcode = XFS_MSG_CREATE;
+	msg.parent_handle = xn->handle;
+	strncpy(msg.name, name, 256);
+	vattr2xfs_attr(vap, &msg.attr);
+
+	msg.mode = 0;		       /* XXX - mode */
+	if (cred != NOCRED) {
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	} else {
+	    msg.cred.uid = 0;
+	    msg.cred.pag = XFS_ANONYMOUSID;
+	}
+
+	error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	if (error == 0)
+	    error = ((struct xfs_message_wakeup *) & msg)->error;
+    }
+
+#if 0
+    if (error == EEXIST)
+	error = 0;
+#endif
+
+    return error;
+}
+
+int
+xfs_remove_common(struct vnode *dvp,
+		  struct vnode *vp,
+		  const char *name,
+		  struct ucred *cred)
+{
+    struct xfs *xfsp  = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    struct xfs_message_remove msg;
+    int error;
+
+    XFSDEB(XDEBVNOPS, ("xfs_remove: %s\n", name));
+
+    msg.header.opcode = XFS_MSG_REMOVE;
+    msg.parent_handle = xn->handle;
+    strncpy(msg.name, name, 256);
+    msg.cred.uid = cred->cr_uid;
+    msg.cred.pag = xfs_get_pag(cred);
+    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+    if (error == 0)
+	error = ((struct xfs_message_wakeup *) &msg)->error;
+
+    if (error == 0)
+	xfs_dnlc_purge (vp);
+
+#if !defined(__FreeBSD__) || __FreeBSD_version < 300000
+    if (dvp == vp)
+	vrele(vp);
+    else
+	vput(vp);
+    vput(dvp);
+#endif
+    
+    return error;
+}
+
+int
+xfs_rename_common(struct vnode *fdvp, 
+		  struct vnode *fvp,
+		  const char *fname,
+		  struct vnode *tdvp,
+		  struct vnode *tvp,
+		  const char *tname,
+		  struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(fdvp);
+    int error;
+
+    XFSDEB(XDEBVNOPS, ("xfs_rename: %s %s\n", fname, tname));
+
+    if ((fvp->v_mount != tdvp->v_mount)
+	|| (tvp && (fvp->v_mount != tvp->v_mount))) {
+	return  EXDEV;
+    }
+
+    {
+	struct xfs_message_rename msg;
+
+	msg.header.opcode = XFS_MSG_RENAME;
+	msg.old_parent_handle = VNODE_TO_XNODE(fdvp)->handle;
+	strncpy(msg.old_name, fname, 256);
+	msg.new_parent_handle = VNODE_TO_XNODE(tdvp)->handle;
+	strncpy(msg.new_name, tname, 256);
+	msg.cred.uid = cred->cr_uid;
+	msg.cred.pag = xfs_get_pag(cred);
+	error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	if (error == 0)
+	    error = ((struct xfs_message_wakeup *) &msg)->error;
+
+    }
+
+    XFSDEB(XDEBVNOPS, ("xfs_rename: error = %d\n", error));
+
+    return error;
+}
+
+int
+xfs_mkdir_common(struct vnode *dvp, 
+		 const char *name,
+		 struct vattr *vap, 
+		 struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_mkdir: %s\n", name));
+    {
+	struct xfs_message_mkdir msg;
+
+	msg.header.opcode = XFS_MSG_MKDIR;
+	msg.parent_handle = xn->handle;
+	strncpy(msg.name, name, 256);
+	vattr2xfs_attr(vap, &msg.attr);
+	if (cred != NOCRED) {
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	} else {
+	    msg.cred.uid = 0;
+	    msg.cred.pag = XFS_ANONYMOUSID;
+	}
+	error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	if (error == 0)
+	    error = ((struct xfs_message_wakeup *) & msg)->error;
+    }
+
+    return error;
+}
+
+int
+xfs_rmdir_common(struct vnode *dvp,
+		 struct vnode *vp,
+		 const char *name,
+		 struct ucred *cred)
+{
+    struct xfs *xfsp  = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    struct xfs_message_rmdir msg;
+    int error;
+
+    XFSDEB(XDEBVNOPS, ("xfs_rmdir: %s\n", name));
+
+    msg.header.opcode = XFS_MSG_RMDIR;
+    msg.parent_handle = xn->handle;
+    strncpy(msg.name, name, 256);
+    msg.cred.uid = cred->cr_uid;
+    msg.cred.pag = xfs_get_pag(cred);
+    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+    if (error == 0)
+	error = ((struct xfs_message_wakeup *) &msg)->error;
+
+    if (error == 0)
+	xfs_dnlc_purge (vp);
+
+#if !defined(__FreeBSD__) || __FreeBSD_version < 300000
+    if (dvp == vp)
+	vrele(vp);
+    else
+	vput(vp);
+    vput(dvp);
+#endif
+
+    return error;
+}
+
+int
+xfs_readdir_common(struct vnode *vp, 
+		   struct uio *uiop, 
+		   struct ucred *cred,
+		   int *eofflag)
+{
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_readdir\n"));
+
+    if(eofflag)
+	*eofflag = 0;
+    error = xfs_data_valid(vp, cred, XFS_DATA_R);
+    if (error == 0) {
+	struct vnode *t = DATA_FROM_VNODE(vp);
+
+	xfs_vfs_readlock(t, xfs_uio_to_proc(uiop));
+#ifdef __osf__
+	VOP_READ(t, uiop, 0, cred, error);
+#else
+	error = VOP_READ(t, uiop, 0, cred);
+#endif
+	if(eofflag)
+	    *eofflag = VNODE_TO_XNODE(vp)->attr.va_size <= uiop->uio_offset;
+	xfs_vfs_unlock(t, xfs_uio_to_proc(uiop));
+    }
+    return error;
+}
+
+int
+xfs_link_common(struct vnode *dvp, 
+		struct vnode *vp, 
+		const char *name,
+		struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    struct xfs_node *xn2 = VNODE_TO_XNODE(vp);
+    struct xfs_message_link msg;
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_link: %s\n", name));
+    
+    msg.header.opcode = XFS_MSG_LINK;
+    msg.parent_handle = xn->handle;
+    msg.from_handle   = xn2->handle;
+    strncpy(msg.name, name, 256);
+    msg.cred.uid = cred->cr_uid;
+    msg.cred.pag = xfs_get_pag(cred);
+
+    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+    if (error == 0)
+	error = ((struct xfs_message_wakeup *) & msg)->error;
+    
+    return error;
+}
+
+int
+xfs_symlink_common(struct vnode *dvp,
+		   struct vnode **vpp,
+		   const char *name,
+		   struct proc *proc,
+		   struct ucred *cred,
+		   struct vattr *vap,
+		   char *target)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    struct xfs_message_symlink msg;
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_symlink: %s\n", name));
+
+    msg.header.opcode = XFS_MSG_SYMLINK;
+    msg.parent_handle = xn->handle;
+    strncpy(msg.name, name, sizeof(msg.name));
+    msg.name[sizeof(msg.name) - 1] = '\0';
+    vattr2xfs_attr(vap, &msg.attr);
+    msg.cred.uid = cred->cr_uid;
+    msg.cred.pag = xfs_get_pag(cred);
+    strncpy (msg.contents, target, sizeof(msg.contents));
+    msg.contents[sizeof(msg.contents) - 1] = '\0';
+
+    error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+    if (error == 0)
+	error = ((struct xfs_message_wakeup *) & msg)->error;
+
+    if (error == 0) {
+	error = xfs_lookup_name(dvp, name, proc, cred, vpp);
+	if (error == 0)
+	    vput (*vpp);
+    }
+
+#if !defined(__FreeBSD__) || __FreeBSD_version < 300000
+    vput(dvp);
+#endif
+
+    return error;
+}
+
+int
+xfs_readlink_common(struct vnode *vp, struct uio *uiop, struct ucred *cred)
+{
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_readlink\n"));
+
+    error = xfs_data_valid(vp, cred, XFS_DATA_R);
+    if (error == 0) {
+	struct vnode *t = DATA_FROM_VNODE(vp);
+
+	xfs_vfs_readlock(t, xfs_uio_to_proc(uiop));
+#ifdef __osf__
+	VOP_READ(t, uiop, 0, cred, error);
+#else
+	error = VOP_READ(t, uiop, 0, cred);
+#endif
+	xfs_vfs_unlock(t, xfs_uio_to_proc(uiop));
+    }
+    return error;
+}
+
+int
+xfs_inactive_common(struct vnode *vp, struct proc *p)
+{
+    struct xfs_message_inactivenode msg;
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+
+    XFSDEB(XDEBVNOPS, ("xfs_inactive, %p\n", vp));
+
+    /*
+     * This seems rather bogus, but sometimes we get an already
+     * cleaned node to be made inactive.  Just ignoring it seems safe.
+     */
+
+    if (xn == NULL) {
+	XFSDEB(XDEBVNOPS, ("xfs_inactive: clean node\n"));
+	return 0;
+    }
+
+    xn->tokens = 0;
+    msg.header.opcode = XFS_MSG_INACTIVENODE;
+    msg.handle = xn->handle;
+    msg.flag   = XFS_NOREFS;
+    xfs_message_send(xfsp->fd, &msg.header, sizeof(msg));
+
+#ifndef __osf__
+    xfs_vfs_unlock(vp, p);
+#else
+    /* XXX ? */
+#endif
+
+    XFSDEB(XDEBVNOPS, ("return: xfs_inactive\n"));
+
+    return 0;
+}
+
+int
+xfs_reclaim_common(struct vnode *vp)
+{
+    struct xfs_message_inactivenode msg;
+    struct xfs *xfsp = XFS_FROM_VNODE(vp);
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+
+    XFSDEB(XDEBVNOPS, ("xfs_reclaim: %p\n", vp));
+
+    msg.header.opcode = XFS_MSG_INACTIVENODE;
+    msg.handle = xn->handle;
+    msg.flag   = XFS_NOREFS | XFS_DELETE;
+    xfs_message_send(xfsp->fd, &msg.header, sizeof(msg));
+
+    xfs_dnlc_purge(vp);
+    free_xfs_node(xn);
+
+    return 0;
+}
+
+/*
+ *
+ */
+
+#if 0
+
+int
+xfs_advlock_common(struct vnode *dvp, 
+		   int locktype,
+		   unsigned long lockid, /* XXX this good ? */
+		   struct ucred *cred)
+{
+    struct xfs *xfsp = XFS_FROM_VNODE(dvp);
+    struct xfs_node *xn = VNODE_TO_XNODE(dvp);
+    int error = 0;
+
+    XFSDEB(XDEBVNOPS, ("xfs_advlock\n"));
+    {
+	struct xfs_message_advlock msg;
+
+	msg.header.opcode = XFS_MSG_ADVLOCK;
+	msg.handle = xn->handle;
+	msg.locktype = locktype;
+	msg.lockid = lockid;
+
+	if (cred != NOCRED) {
+	    msg.cred.uid = cred->cr_uid;
+	    msg.cred.pag = xfs_get_pag(cred);
+	} else {
+	    msg.cred.uid = 0;
+	    msg.cred.pag = XFS_ANONYMOUSID;
+	}
+	error = xfs_message_rpc(xfsp->fd, &msg.header, sizeof(msg));
+	if (error == 0)
+	    error = ((struct xfs_message_wakeup *) & msg)->error;
+    }
+
+    if (error == 0) {
+	
+	/* sleep until woken */
+
+    } else {
+
+	/* die */
+    }
+
+    return error;
+}
+
+#endif
+
+/*
+ *
+ */
+
+void
+xfs_printnode_common (struct vnode *vp)
+{
+    struct xfs_node *xn = VNODE_TO_XNODE(vp);
+
+    printf ("xnode: fid: %d.%d.%d.%d\n", 
+	    xn->handle.a, xn->handle.b, xn->handle.c, xn->handle.d);
+    printf ("\tattr: %svalid\n", 
+	    XFS_TOKEN_GOT(xn, XFS_ATTR_VALID) ? "": "in");
+    printf ("\tdata: %svalid\n", 
+	    XFS_TOKEN_GOT(xn, XFS_DATA_VALID) ? "": "in");
+    printf ("\tflags: 0x%x\n", xn->flags);
+}