1 | /* |
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2 | * Copyright (c) 1989, 1993 |
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3 | * The Regents of the University of California. All rights reserved. |
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4 | * |
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5 | * This code is derived from software contributed to Berkeley by |
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6 | * Rick Macklem at The University of Guelph. |
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7 | * |
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8 | * Redistribution and use in source and binary forms, with or without |
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9 | * modification, are permitted provided that the following conditions |
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10 | * are met: |
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11 | * 1. Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * 3. All advertising materials mentioning features or use of this software |
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17 | * must display the following acknowledgement: |
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18 | * This product includes software developed by the University of |
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19 | * California, Berkeley and its contributors. |
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20 | * 4. Neither the name of the University nor the names of its contributors |
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21 | * may be used to endorse or promote products derived from this software |
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22 | * without specific prior written permission. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 | * SUCH DAMAGE. |
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35 | * |
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36 | * @(#)xdr_subs.h 8.1 (Berkeley) 6/10/93 |
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37 | * $Id$ |
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38 | */ |
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39 | |
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40 | #ifndef _NFS_XDR_SUBS_H_ |
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41 | #define _NFS_XDR_SUBS_H_ |
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42 | |
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43 | /* |
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44 | * Macros used for conversion to/from xdr representation by nfs... |
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45 | * These use the MACHINE DEPENDENT routines ntohl, htonl |
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46 | * As defined by "XDR: External Data Representation Standard" RFC1014 |
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47 | * |
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48 | * To simplify the implementation, we use ntohl/htonl even on big-endian |
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49 | * machines, and count on them being `#define'd away. Some of these |
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50 | * might be slightly more efficient as quad_t copies on a big-endian, |
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51 | * but we cannot count on their alignment anyway. |
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52 | */ |
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53 | |
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54 | #define fxdr_unsigned(t, v) ((t)ntohl((long)(v))) |
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55 | #define txdr_unsigned(v) (htonl((long)(v))) |
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56 | |
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57 | #define fxdr_nfsv2time(f, t) { \ |
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58 | (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ |
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59 | if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ |
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60 | (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ |
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61 | else \ |
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62 | (t)->tv_nsec = 0; \ |
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63 | } |
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64 | #define txdr_nfsv2time(f, t) { \ |
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65 | ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ |
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66 | if ((f)->tv_nsec != -1) \ |
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67 | ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ |
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68 | else \ |
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69 | ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ |
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70 | } |
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71 | |
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72 | #define fxdr_nfsv3time(f, t) { \ |
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73 | (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ |
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74 | (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ |
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75 | } |
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76 | #define txdr_nfsv3time(f, t) { \ |
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77 | ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ |
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78 | ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ |
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79 | } |
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80 | |
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81 | #define fxdr_hyper(f, t) { \ |
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82 | ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \ |
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83 | ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \ |
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84 | } |
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85 | #define txdr_hyper(f, t) { \ |
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86 | ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \ |
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87 | ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \ |
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88 | } |
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89 | |
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90 | #endif |
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