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      1 /*	$NetBSD: nfscl.h,v 1.1.1.1 2013/09/30 07:19:39 dholland Exp $	*/
      2 /*-
      3  * Copyright (c) 2009 Rick Macklem, University of Guelph
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  *
     27  * FreeBSD: head/sys/fs/nfs/nfscl.h 244042 2012-12-08 22:52:39Z rmacklem
     28  * $NetBSD: nfscl.h,v 1.1.1.1 2013/09/30 07:19:39 dholland Exp $
     29  */
     30 
     31 #ifndef	_NFS_NFSCL_H
     32 #define	_NFS_NFSCL_H
     33 
     34 /*
     35  * Extra stuff for a NFSv4 nfsnode.
     36  * MALLOC'd to the correct length for the name and file handle.
     37  * n4_data has the file handle, followed by the file name.
     38  * The macro NFS4NODENAME() returns a pointer to the start of the
     39  * name.
     40  */
     41 struct nfsv4node {
     42 	u_int16_t	n4_fhlen;
     43 	u_int16_t	n4_namelen;
     44 	u_int8_t	n4_data[1];
     45 };
     46 
     47 #define	NFS4NODENAME(n)	(&((n)->n4_data[(n)->n4_fhlen]))
     48 
     49 /*
     50  * Just a macro to convert the nfscl_reqstart arguments.
     51  */
     52 #define	NFSCL_REQSTART(n, p, v) 					\
     53 	nfscl_reqstart((n), (p), VFSTONFS((v)->v_mount), 		\
     54 	    VTONFS(v)->n_fhp->nfh_fh, VTONFS(v)->n_fhp->nfh_len, NULL, NULL)
     55 
     56 /*
     57  * These two macros convert between a lease duration and renew interval.
     58  * For now, just make the renew interval 1/2 the lease duration.
     59  * (They should be inverse operators.)
     60  */
     61 #define	NFSCL_RENEW(l)	(((l) < 2) ? 1 : ((l) / 2))
     62 #define	NFSCL_LEASE(r)	((r) * 2)
     63 
     64 /*
     65  * These flag bits are used for the argument to nfscl_fillsattr() to
     66  * indicate special handling of the attributes.
     67  */
     68 #define	NFSSATTR_FULL		0x1
     69 #define	NFSSATTR_SIZE0		0x2
     70 #define	NFSSATTR_SIZENEG1	0x4
     71 #define	NFSSATTR_SIZERDEV	0x8
     72 
     73 /* Use this macro for debug printfs. */
     74 #define	NFSCL_DEBUG(level, ...)	do {					\
     75 		if (nfscl_debuglevel >= (level))			\
     76 			printf(__VA_ARGS__);				\
     77 	} while (0)
     78 
     79 #endif	/* _NFS_NFSCL_H */
     80