/*

 * 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.

 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#pragma weak sharefs = _sharefs

#include "synonyms.h"

#include <sys/types.h>

#include <sys/types32.h>

#include <rpc/types.h>

#include <sys/vfs.h>

#include <strings.h>

#include <sharefs/share.h>

#include <sys/syscall.h>

#include "libc.h"

#define	SMAX(i, j)		\

	if ((j) > (i)) {	\

		(i) = (j);	\

	}

int

sharefs(enum sharefs_sys_op opcode, struct share *sh)

{

	uint32_t		i, j;

	/*

	 * We need to know the total size of the share

	 * and also the largest element size. This is to

	 * get enough buffer space to transfer from

	 * userland to kernel.

	 */

	i = (sh->sh_path ? strlen(sh->sh_path) : 0);

	sh->sh_size = i;

	j = (sh->sh_res ? strlen(sh->sh_res) : 0);

	sh->sh_size += j;

	SMAX(i, j);

	j = (sh->sh_fstype ? strlen(sh->sh_fstype) : 0);

	sh->sh_size += j;

	SMAX(i, j);

	j = (sh->sh_opts ? strlen(sh->sh_opts) : 0);

	sh->sh_size += j;

	SMAX(i, j);

	j = (sh->sh_descr ? strlen(sh->sh_descr) : 0);

	sh->sh_size += j;

	SMAX(i, j);

	return (syscall(SYS_sharefs, opcode, sh, i));

}