--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/uts/common/sharefs/sharefs.h	Mon Apr 02 21:38:04 2007 -0700
@@ -0,0 +1,123 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SHAREFS_SHAREFS_H
+#define	_SHAREFS_SHAREFS_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * This header provides service for the sharefs module.
+ */
+
+#include <sys/modctl.h>
+#include <sys/vfs.h>
+#include <sys/vnode.h>
+#include <sys/gfs.h>
+#include <sharefs/share.h>
+#include <sharefs/sharetab.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define	SHAREFS_ROOT	"/etc/dfs"
+#define	SHAREFS_BASE	"sharetab"
+
+/*
+ * Lengths of strings.
+ */
+typedef struct sharefs_lens {
+	int	shl_path;
+	int	shl_res;
+	int	shl_fstype;
+	int	shl_opts;
+	int	shl_descr;
+} sharefs_lens_t;
+
+/*
+ * VFS data object
+ */
+typedef struct sharefs_vfs {
+	vnode_t	*sharefs_vfs_root;
+} sharefs_vfs_t;
+
+#define	SHAREFS_NAME_MAX	MAXNAMELEN
+
+/*
+ * The lock ordering whenever sharefs_lock and sharetab_lock both
+ * need to be held is: sharefs_lock and then sharetab_lock.
+ */
+extern krwlock_t	sharefs_lock;	/* lock for the vnode ops */
+extern sharetab_t	*sharefs_sharetab;	/* The sharetab. */
+
+extern uint_t		sharetab_count;	/* How many shares? */
+extern krwlock_t	sharetab_lock;	/* lock for the cached sharetab */
+extern size_t		sharetab_size;	/* How big is the sharetab file? */
+
+extern timestruc_t	sharetab_mtime;	/* Last mod to sharetab */
+extern timestruc_t	sharetab_snap_time;	/* Last snap */
+extern uint_t		sharetab_generation;	/* Which copy is it? */
+
+#define	SHAREFS_INO_FILE	0x80
+
+extern vnode_t *sharefs_create_root_file(vfs_t *);
+
+/*
+ * Sharetab file
+ *
+ * Note that even though the sharetab code does not explictly
+ * use 'sharefs_file', it is required by GFS that the first
+ * field of the private data be a gfs_file_t.
+ */
+typedef struct shnode_t {
+	gfs_file_t	sharefs_file;		/* gfs file */
+	char		*sharefs_snap;		/* snapshot of the share */
+	size_t		sharefs_size;		/* size of the snapshot */
+	uint_t		sharefs_count;		/* number of shares */
+	uint_t		sharefs_refs;		/* reference count */
+	uint_t		sharefs_real_vp;	/* Are we a real or snap */
+	uint_t		sharefs_generation;	/* Which copy are we? */
+	timestruc_t	sharefs_snap_time;	/* When were we modded? */
+} shnode_t;
+
+/*
+ * Some conversion macros:
+ */
+#define	VTOSH(vp)	((shnode_t *)((vp)->v_data))
+
+extern const fs_operation_def_t	sharefs_tops_data[];
+extern vnodeops_t		*sharefs_ops_data;
+
+extern void sharefs_data_init(void);
+
+extern void sharefs_sharetab_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_SHAREFS_SHAREFS_H */