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- /****************************************************************************
- * fs/nfs/xdr_subs.h
- * Definitions for Sun RPC Version 2, from
- * "RPC: Remote Procedure Call Protocol Specification" RFC1057
- *
- * Copyright (C) 2012 Gregory Nutt. All rights reserved.
- * Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved.
- * Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com>
- * Gregory Nutt <gnutt@nuttx.org>
- *
- * Leveraged from OpenBSD:
- *
- * 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. 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.
- *
- ****************************************************************************/
- #ifndef __FS_NFS_XDR_SUBS_H
- #define __FS_NFS_XDR_SUBS_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <arpa/inet.h>
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* 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 int64_t copies on a big-endian,
- * but we cannot count on their alignment anyway.
- */
- #define fxdr_unsigned(t, v) ((t)ntohl(v))
- #define txdr_unsigned(v) (htonl(v))
- #define fxdr_nfsv3time(f, t) \
- { \
- (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
- (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
- }
- #define txdr_nfsv3time(f, t) \
- { \
- ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
- ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
- }
- #define fxdr_hyper(f) \
- ((((uint64_t)ntohl(((uint32_t *)(f))[0])) << 32) | \
- (uint64_t)(ntohl(((uint32_t *)(f))[1])))
- #define txdr_hyper(f, t) \
- { \
- ((uint32_t *)(t))[0] = htonl((uint32_t)((f) >> 32)); \
- ((uint32_t *)(t))[1] = htonl((uint32_t)((f) & 0xffffffff)); \
- }
- /* Macros for dealing with byte data saved in uint32_t aligned memory */
- #define uint32_aligndown(b) ((b) & ~3)
- #define uint32_alignup(b) (((b) + 3) & ~3)
- #define uint32_increment(b) (((b) + 3) >> 2)
- #endif /* __FS_NFS_XDR_SUBS_H */
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