/*      $NetBSD: nfscl.h,v 1.1.1.1 2013/09/30 07:19:39 dholland Exp $   */
/*-
 * Copyright (c) 2009 Rick Macklem, University of Guelph
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * FreeBSD: head/sys/fs/nfs/nfscl.h 244042 2012-12-08 22:52:39Z rmacklem 
 * $NetBSD: nfscl.h,v 1.1.1.1 2013/09/30 07:19:39 dholland Exp $
 */

#ifndef _NFS_NFSCL_H
#define _NFS_NFSCL_H

/*
 * Extra stuff for a NFSv4 nfsnode.
 * MALLOC'd to the correct length for the name and file handle.
 * n4_data has the file handle, followed by the file name.
 * The macro NFS4NODENAME() returns a pointer to the start of the
 * name.
 */
struct nfsv4node {
        u_int16_t       n4_fhlen;
        u_int16_t       n4_namelen;
        u_int8_t        n4_data[1];
};

#define NFS4NODENAME(n) (&((n)->n4_data[(n)->n4_fhlen]))

/*
 * Just a macro to convert the nfscl_reqstart arguments.
 */
#define NFSCL_REQSTART(n, p, v)                                         \
        nfscl_reqstart((n), (p), VFSTONFS((v)->v_mount),                \
            VTONFS(v)->n_fhp->nfh_fh, VTONFS(v)->n_fhp->nfh_len, NULL, NULL)

/*
 * These two macros convert between a lease duration and renew interval.
 * For now, just make the renew interval 1/2 the lease duration.
 * (They should be inverse operators.)
 */
#define NFSCL_RENEW(l)  (((l) < 2) ? 1 : ((l) / 2))
#define NFSCL_LEASE(r)  ((r) * 2)

/*
 * These flag bits are used for the argument to nfscl_fillsattr() to
 * indicate special handling of the attributes.
 */
#define NFSSATTR_FULL           0x1
#define NFSSATTR_SIZE0          0x2
#define NFSSATTR_SIZENEG1       0x4
#define NFSSATTR_SIZERDEV       0x8

/* Use this macro for debug printfs. */
#define NFSCL_DEBUG(level, ...) do {                                    \
                if (nfscl_debuglevel >= (level))                        \
                        printf(__VA_ARGS__);                            \
        } while (0)

#endif  /* _NFS_NFSCL_H */