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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-03-02 02:11:31 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-03-02 02:11:31 +0000 |
commit | 7f70746d22efea1cec36e172debaaf4031230e96 (patch) | |
tree | cfd49b707489ceb80afdd0a15f485cf21c4da9b8 /nuttx/fs/nfs/xdr_subs.h | |
parent | 4d75d2d6cf6e21a4ac904913149140461b0b8dc6 (diff) | |
download | px4-nuttx-7f70746d22efea1cec36e172debaaf4031230e96.tar.gz px4-nuttx-7f70746d22efea1cec36e172debaaf4031230e96.tar.bz2 px4-nuttx-7f70746d22efea1cec36e172debaaf4031230e96.zip |
Add the beginnings of NFS client support
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4443 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/fs/nfs/xdr_subs.h')
-rw-r--r-- | nuttx/fs/nfs/xdr_subs.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/nuttx/fs/nfs/xdr_subs.h b/nuttx/fs/nfs/xdr_subs.h new file mode 100644 index 000000000..97bb24aee --- /dev/null +++ b/nuttx/fs/nfs/xdr_subs.h @@ -0,0 +1,103 @@ +/**************************************************************************** + * fs/nfs/rpc_types.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> + * + * 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 + ****************************************************************************/ + +/**************************************************************************** + * 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 quad_t copies on a big-endian, + * but we cannot count on their alignment anyway. + */ + +#define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) +#define txdr_unsigned(v) (htonl((int32_t)(v))) + +#define fxdr_nfsv2time(f, t) { \ + (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ + if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ + (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ + else \ + (t)->tv_nsec = 0; \ +} + +#define txdr_nfsv2time(f, t) { \ + ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ + if ((f)->tv_nsec != -1) \ + ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ + else \ + ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ +} + +#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) \ + ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ + (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) + +#define txdr_hyper(f, t) { \ + ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ + ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ +} + +#endif /* __FS_NFS_XDR_SUBS_H */ |