freebsd-skq/sys/nfs/xdr_subs.h
dfr 666343f7f0 Changes to support version 3 of the NFS protocol.
The version 2 support has been tested (client+server) against FreeBSD-2.0,
IRIX 5.3 and FreeBSD-current (using a loopback mount).  The version 2 support
is stable AFAIK.
The version 3 support has been tested with a loopback mount and minimally
against an IRIX 5.3 server.  It needs more testing and may have problems.
I have patched amd to support the new variable length filehandles although
it will still only use version 2 of the protocol.

Before booting a kernel with these changes, nfs clients will need to at least
build and install /usr/sbin/mount_nfs.  Servers will need to build and
install /usr/sbin/mountd.

NFS diskless support is untested.

Obtained from: Rick Macklem <rick@snowhite.cis.uoguelph.ca>
1995-06-27 11:07:30 +00:00

91 lines
3.7 KiB
C

/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)xdr_subs.h 8.1 (Berkeley) 6/10/93
* $Id: xdr_subs.h,v 1.4 1995/01/10 13:11:42 davidg Exp $
*/
#ifndef _NFS_XDR_SUBS_H_
#define _NFS_XDR_SUBS_H_
/*
* Macros used for conversion to/from xdr representation by nfs...
* These use the MACHINE DEPENDENT routines ntohl, htonl
* As defined by "XDR: External Data Representation Standard" RFC1014
*
* To simplify the implementation, we use ntohl/htonl even on big-endian
* machines, and count on them being `#define'd away. Some of these
* might be slightly more efficient as quad_t copies on a big-endian,
* but we cannot count on their alignment anyway.
*/
#define fxdr_unsigned(t, v) ((t)ntohl((long)(v)))
#define txdr_unsigned(v) (htonl((long)(v)))
#define fxdr_nfsv2time(f, t) { \
(t)->ts_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
(t)->ts_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
else \
(t)->ts_nsec = 0; \
}
#define txdr_nfsv2time(f, t) { \
((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->ts_sec); \
if ((f)->ts_nsec != -1) \
((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->ts_nsec / 1000); \
else \
((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
}
#define fxdr_nfsv3time(f, t) { \
(t)->ts_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
(t)->ts_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
}
#define txdr_nfsv3time(f, t) { \
((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->ts_sec); \
((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->ts_nsec); \
}
#define fxdr_hyper(f, t) { \
((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \
((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \
}
#define txdr_hyper(f, t) { \
((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \
((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \
}
#endif