[444] | 1 | /* |
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| 2 | * Copyright (c) 2009, Sun Microsystems, Inc. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions are met: |
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| 7 | * - Redistributions of source code must retain the above copyright notice, |
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| 8 | * this list of conditions and the following disclaimer. |
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| 9 | * - Redistributions in binary form must reproduce the above copyright notice, |
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| 10 | * this list of conditions and the following disclaimer in the documentation |
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| 11 | * and/or other materials provided with the distribution. |
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| 12 | * - Neither the name of Sun Microsystems, Inc. nor the names of its |
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| 13 | * contributors may be used to endorse or promote products derived |
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| 14 | * from this software without specific prior written permission. |
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| 15 | * |
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 26 | * POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |
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| 29 | /* |
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| 30 | * xdr.c, Generic XDR routines implementation. |
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| 31 | * |
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| 32 | * Copyright (C) 1986, Sun Microsystems, Inc. |
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| 33 | * |
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| 34 | * These are the "generic" xdr routines used to serialize and de-serialize |
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| 35 | * most common data items. See xdr.h for more info on the interface to |
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| 36 | * xdr. |
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| 37 | */ |
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| 38 | |
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| 39 | #include <stdlib.h> |
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| 40 | #include <string.h> |
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| 41 | #include <errno.h> |
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| 42 | |
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| 43 | #include <rpc/types.h> |
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| 44 | #include <rpc/xdr.h> |
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| 45 | |
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| 46 | #include "xdr_private.h" |
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| 47 | |
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| 48 | /* |
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| 49 | * constants specific to the xdr "protocol" |
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| 50 | */ |
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| 51 | #define XDR_FALSE ((long) 0) |
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| 52 | #define XDR_TRUE ((long) 1) |
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| 53 | #define LASTUNSIGNED ((u_int) 0-1) |
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| 54 | |
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| 55 | /* |
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| 56 | * for unit alignment |
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| 57 | */ |
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| 58 | static const char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 }; |
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| 59 | |
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| 60 | /* |
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| 61 | * Free a data structure using XDR |
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| 62 | * Not a filter, but a convenient utility nonetheless |
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| 63 | */ |
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| 64 | void |
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| 65 | xdr_free (xdrproc_t proc, |
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| 66 | void * objp) |
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| 67 | { |
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| 68 | XDR x; |
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| 69 | |
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| 70 | x.x_op = XDR_FREE; |
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| 71 | (*proc) (&x, objp); |
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| 72 | } |
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| 73 | |
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| 74 | /* |
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| 75 | * XDR nothing |
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| 76 | */ |
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| 77 | bool_t |
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| 78 | xdr_void (void) |
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| 79 | { |
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| 80 | return TRUE; |
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| 81 | } |
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| 82 | |
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| 83 | |
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| 84 | /* |
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| 85 | * XDR integers |
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| 86 | */ |
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| 87 | bool_t |
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| 88 | xdr_int (XDR * xdrs, |
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| 89 | int * ip) |
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| 90 | { |
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| 91 | #if INT_MAX < LONG_MAX |
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| 92 | long l; |
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| 93 | switch (xdrs->x_op) |
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| 94 | { |
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| 95 | case XDR_ENCODE: |
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| 96 | l = (long) *ip; |
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| 97 | return (XDR_PUTLONG (xdrs, &l)); |
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| 98 | |
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| 99 | case XDR_DECODE: |
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| 100 | if (!XDR_GETLONG (xdrs, &l)) |
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| 101 | { |
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| 102 | return FALSE; |
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| 103 | } |
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| 104 | *ip = (int) l; |
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| 105 | return TRUE; |
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| 106 | |
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| 107 | case XDR_FREE: |
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| 108 | return TRUE; |
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| 109 | } |
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| 110 | return FALSE; |
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| 111 | #elif INT_MAX == LONG_MAX |
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| 112 | return xdr_long (xdrs, (long *) ip); |
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| 113 | #else |
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| 114 | # error Unexpected integer sizes in xdr_int() |
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| 115 | #endif |
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| 116 | } |
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| 117 | |
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| 118 | /* |
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| 119 | * XDR unsigned integers |
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| 120 | */ |
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| 121 | bool_t |
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| 122 | xdr_u_int (XDR * xdrs, |
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| 123 | u_int * up) |
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| 124 | { |
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| 125 | #if UINT_MAX < ULONG_MAX |
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| 126 | u_long l; |
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| 127 | switch (xdrs->x_op) |
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| 128 | { |
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| 129 | case XDR_ENCODE: |
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| 130 | l = (u_long) * up; |
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| 131 | return (XDR_PUTLONG (xdrs, (long *) &l)); |
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| 132 | |
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| 133 | case XDR_DECODE: |
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| 134 | if (!XDR_GETLONG (xdrs, (long *) &l)) |
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| 135 | { |
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| 136 | return FALSE; |
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| 137 | } |
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| 138 | *up = (u_int) (u_long) l; |
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| 139 | return TRUE; |
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| 140 | |
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| 141 | case XDR_FREE: |
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| 142 | return TRUE; |
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| 143 | } |
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| 144 | return FALSE; |
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| 145 | #elif UINT_MAX == ULONG_MAX |
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| 146 | return xdr_u_long (xdrs, (u_long *) up); |
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| 147 | #else |
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| 148 | # error Unexpected integer sizes in xdr_int() |
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| 149 | #endif |
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| 150 | } |
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| 151 | |
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| 152 | /* |
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| 153 | * XDR long integers |
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| 154 | */ |
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| 155 | bool_t |
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| 156 | xdr_long (XDR * xdrs, |
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| 157 | long * lp) |
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| 158 | { |
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| 159 | if ((xdrs->x_op == XDR_ENCODE) |
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| 160 | && ((sizeof (int32_t) == sizeof (long)) || ((int32_t) *lp == *lp))) |
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| 161 | return XDR_PUTLONG (xdrs, lp); |
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| 162 | |
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| 163 | if (xdrs->x_op == XDR_DECODE) |
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| 164 | return XDR_GETLONG (xdrs, lp); |
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| 165 | |
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| 166 | if (xdrs->x_op == XDR_FREE) |
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| 167 | return TRUE; |
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| 168 | |
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| 169 | return FALSE; |
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| 170 | } |
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| 171 | |
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| 172 | /* |
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| 173 | * XDR unsigned long integers |
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| 174 | */ |
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| 175 | bool_t |
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| 176 | xdr_u_long (XDR * xdrs, |
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| 177 | u_long * ulp) |
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| 178 | { |
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| 179 | switch (xdrs->x_op) |
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| 180 | { |
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| 181 | case XDR_ENCODE: |
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| 182 | if ((sizeof (uint32_t) != sizeof (u_long)) && ((uint32_t) *ulp != *ulp)) |
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| 183 | return FALSE; |
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| 184 | return (XDR_PUTLONG (xdrs, (long *) ulp)); |
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| 185 | |
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| 186 | case XDR_DECODE: |
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| 187 | { |
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| 188 | long int tmp; |
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| 189 | if (XDR_GETLONG (xdrs, &tmp) == FALSE) |
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| 190 | return FALSE; |
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| 191 | *ulp = (u_long) (uint32_t) tmp; |
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| 192 | return TRUE; |
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| 193 | } |
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| 194 | |
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| 195 | case XDR_FREE: |
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| 196 | return TRUE; |
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| 197 | } |
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| 198 | return FALSE; |
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| 199 | } |
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| 200 | |
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| 201 | |
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| 202 | /* |
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| 203 | * XDR 32-bit integers |
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| 204 | */ |
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| 205 | bool_t |
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| 206 | xdr_int32_t (XDR * xdrs, |
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| 207 | int32_t * int32_p) |
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| 208 | { |
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| 209 | switch (xdrs->x_op) |
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| 210 | { |
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| 211 | case XDR_ENCODE: |
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| 212 | return XDR_PUTINT32 (xdrs, int32_p); |
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| 213 | |
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| 214 | case XDR_DECODE: |
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| 215 | return XDR_GETINT32(xdrs, int32_p); |
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| 216 | |
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| 217 | case XDR_FREE: |
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| 218 | return TRUE; |
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| 219 | } |
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| 220 | return FALSE; |
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| 221 | } |
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| 222 | |
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| 223 | /* |
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| 224 | * XDR unsigned 32-bit integers |
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| 225 | */ |
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| 226 | bool_t |
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| 227 | xdr_u_int32_t (XDR * xdrs, |
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| 228 | u_int32_t * u_int32_p) |
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| 229 | { |
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| 230 | switch (xdrs->x_op) |
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| 231 | { |
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| 232 | case XDR_ENCODE: |
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| 233 | return XDR_PUTINT32 (xdrs, (int32_t *)u_int32_p); |
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| 234 | |
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| 235 | case XDR_DECODE: |
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| 236 | return XDR_GETINT32 (xdrs, (int32_t *)u_int32_p); |
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| 237 | |
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| 238 | case XDR_FREE: |
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| 239 | return TRUE; |
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| 240 | } |
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| 241 | return FALSE; |
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| 242 | } |
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| 243 | |
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| 244 | /* |
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| 245 | * XDR unsigned 32-bit integers |
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| 246 | */ |
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| 247 | bool_t |
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| 248 | xdr_uint32_t (XDR * xdrs, |
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| 249 | uint32_t * uint32_p) |
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| 250 | { |
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| 251 | switch (xdrs->x_op) |
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| 252 | { |
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| 253 | case XDR_ENCODE: |
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| 254 | return XDR_PUTINT32 (xdrs, (int32_t *)uint32_p); |
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| 255 | |
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| 256 | case XDR_DECODE: |
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| 257 | return XDR_GETINT32 (xdrs, (int32_t *)uint32_p); |
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| 258 | |
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| 259 | case XDR_FREE: |
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| 260 | return TRUE; |
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| 261 | } |
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| 262 | return FALSE; |
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| 263 | } |
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| 264 | |
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| 265 | /* |
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| 266 | * XDR short integers |
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| 267 | */ |
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| 268 | bool_t |
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| 269 | xdr_short (XDR * xdrs, |
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| 270 | short * sp) |
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| 271 | { |
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| 272 | long l; |
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| 273 | |
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| 274 | switch (xdrs->x_op) |
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| 275 | { |
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| 276 | case XDR_ENCODE: |
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| 277 | l = (long) *sp; |
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| 278 | return (XDR_PUTLONG (xdrs, &l)); |
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| 279 | |
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| 280 | case XDR_DECODE: |
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| 281 | if (!XDR_GETLONG (xdrs, &l)) |
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| 282 | return FALSE; |
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| 283 | *sp = (short) l; |
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| 284 | return TRUE; |
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| 285 | |
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| 286 | case XDR_FREE: |
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| 287 | return TRUE; |
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| 288 | } |
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| 289 | return FALSE; |
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| 290 | } |
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| 291 | |
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| 292 | /* |
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| 293 | * XDR unsigned short integers |
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| 294 | */ |
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| 295 | bool_t |
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| 296 | xdr_u_short (XDR * xdrs, |
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| 297 | u_short * usp) |
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| 298 | { |
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| 299 | long l; |
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| 300 | |
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| 301 | switch (xdrs->x_op) |
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| 302 | { |
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| 303 | case XDR_ENCODE: |
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| 304 | l = (u_long) * usp; |
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| 305 | return XDR_PUTLONG (xdrs, &l); |
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| 306 | |
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| 307 | case XDR_DECODE: |
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| 308 | if (!XDR_GETLONG (xdrs, &l)) |
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| 309 | return FALSE; |
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| 310 | *usp = (u_short) (u_long) l; |
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| 311 | return TRUE; |
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| 312 | |
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| 313 | case XDR_FREE: |
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| 314 | return TRUE; |
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| 315 | } |
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| 316 | return FALSE; |
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| 317 | } |
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| 318 | |
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| 319 | |
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| 320 | /* |
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| 321 | * XDR 16-bit integers |
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| 322 | */ |
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| 323 | bool_t |
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| 324 | xdr_int16_t (XDR * xdrs, |
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| 325 | int16_t * int16_p) |
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| 326 | { |
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| 327 | int32_t t; |
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| 328 | |
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| 329 | switch (xdrs->x_op) |
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| 330 | { |
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| 331 | case XDR_ENCODE: |
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| 332 | t = (int32_t) *int16_p; |
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| 333 | return XDR_PUTINT32 (xdrs, &t); |
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| 334 | |
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| 335 | case XDR_DECODE: |
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| 336 | if (!XDR_GETINT32 (xdrs, &t)) |
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| 337 | return FALSE; |
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| 338 | *int16_p = (int16_t) t; |
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| 339 | return TRUE; |
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| 340 | |
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| 341 | case XDR_FREE: |
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| 342 | return TRUE; |
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| 343 | } |
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| 344 | return FALSE; |
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| 345 | } |
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| 346 | |
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| 347 | /* |
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| 348 | * XDR unsigned 16-bit integers |
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| 349 | */ |
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| 350 | bool_t |
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| 351 | xdr_u_int16_t (XDR * xdrs, |
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| 352 | u_int16_t * u_int16_p) |
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| 353 | { |
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| 354 | uint32_t ut; |
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| 355 | |
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| 356 | switch (xdrs->x_op) |
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| 357 | { |
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| 358 | case XDR_ENCODE: |
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| 359 | ut = (uint32_t) *u_int16_p; |
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| 360 | return XDR_PUTINT32 (xdrs, (int32_t *)&ut); |
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| 361 | |
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| 362 | case XDR_DECODE: |
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| 363 | if (!XDR_GETINT32 (xdrs, (int32_t *)&ut)) |
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| 364 | return FALSE; |
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| 365 | *u_int16_p = (u_int16_t) ut; |
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| 366 | return TRUE; |
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| 367 | |
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| 368 | case XDR_FREE: |
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| 369 | return TRUE; |
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| 370 | } |
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| 371 | return FALSE; |
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| 372 | } |
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| 373 | |
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| 374 | /* |
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| 375 | * XDR unsigned 16-bit integers |
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| 376 | */ |
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| 377 | bool_t |
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| 378 | xdr_uint16_t (XDR * xdrs, |
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| 379 | uint16_t * uint16_p) |
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| 380 | { |
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| 381 | uint32_t ut; |
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| 382 | |
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| 383 | switch (xdrs->x_op) |
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| 384 | { |
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| 385 | case XDR_ENCODE: |
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| 386 | ut = (uint32_t) *uint16_p; |
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| 387 | return XDR_PUTINT32 (xdrs, (int32_t *)&ut); |
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| 388 | |
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| 389 | case XDR_DECODE: |
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| 390 | if (!XDR_GETINT32 (xdrs, (int32_t *)&ut)) |
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| 391 | return FALSE; |
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| 392 | *uint16_p = (uint16_t) ut; |
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| 393 | return TRUE; |
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| 394 | |
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| 395 | case XDR_FREE: |
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| 396 | return TRUE; |
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| 397 | } |
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| 398 | return FALSE; |
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| 399 | } |
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| 400 | |
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| 401 | /* |
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| 402 | * XDR 8-bit integers |
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| 403 | */ |
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| 404 | bool_t |
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| 405 | xdr_int8_t (XDR * xdrs, |
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| 406 | int8_t * int8_p) |
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| 407 | { |
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| 408 | int32_t t; |
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| 409 | |
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| 410 | switch (xdrs->x_op) |
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| 411 | { |
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| 412 | case XDR_ENCODE: |
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| 413 | t = (int32_t) *int8_p; |
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| 414 | return XDR_PUTINT32 (xdrs, &t); |
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| 415 | |
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| 416 | case XDR_DECODE: |
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| 417 | if (!XDR_GETINT32 (xdrs, &t)) |
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| 418 | return FALSE; |
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| 419 | *int8_p = (int8_t) t; |
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| 420 | return TRUE; |
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| 421 | |
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| 422 | case XDR_FREE: |
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| 423 | return TRUE; |
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| 424 | } |
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| 425 | return FALSE; |
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| 426 | } |
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| 427 | |
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| 428 | /* |
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| 429 | * XDR unsigned 8-bit integers |
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| 430 | */ |
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| 431 | bool_t |
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| 432 | xdr_u_int8_t (XDR * xdrs, |
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| 433 | u_int8_t * u_int8_p) |
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| 434 | { |
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| 435 | uint32_t ut; |
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| 436 | |
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| 437 | switch (xdrs->x_op) |
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| 438 | { |
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| 439 | case XDR_ENCODE: |
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| 440 | ut = (uint32_t) *u_int8_p; |
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| 441 | return XDR_PUTINT32 (xdrs, (int32_t *)&ut); |
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| 442 | |
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| 443 | case XDR_DECODE: |
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| 444 | if (!XDR_GETINT32 (xdrs, (int32_t *)&ut)) |
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| 445 | return FALSE; |
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| 446 | *u_int8_p = (u_int8_t) ut; |
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| 447 | return TRUE; |
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| 448 | |
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| 449 | case XDR_FREE: |
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| 450 | return TRUE; |
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| 451 | } |
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| 452 | return FALSE; |
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| 453 | } |
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| 454 | |
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| 455 | /* |
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| 456 | * XDR unsigned 8-bit integers |
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| 457 | */ |
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| 458 | bool_t |
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| 459 | xdr_uint8_t (XDR * xdrs, |
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| 460 | uint8_t * uint8_p) |
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| 461 | { |
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| 462 | uint32_t ut; |
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| 463 | |
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| 464 | switch (xdrs->x_op) |
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| 465 | { |
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| 466 | case XDR_ENCODE: |
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| 467 | ut = (uint32_t) *uint8_p; |
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| 468 | return XDR_PUTINT32 (xdrs, (int32_t *)&ut); |
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| 469 | |
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| 470 | case XDR_DECODE: |
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| 471 | if (!XDR_GETINT32 (xdrs, (int32_t *)&ut)) |
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| 472 | return FALSE; |
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| 473 | *uint8_p = (uint8_t) ut; |
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| 474 | return TRUE; |
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| 475 | |
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| 476 | case XDR_FREE: |
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| 477 | return TRUE; |
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| 478 | } |
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| 479 | return FALSE; |
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| 480 | |
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| 481 | } |
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| 482 | |
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| 483 | |
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| 484 | /* |
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| 485 | * XDR a char |
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| 486 | */ |
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| 487 | bool_t |
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| 488 | xdr_char (XDR * xdrs, |
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| 489 | char * cp) |
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| 490 | { |
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| 491 | int i; |
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| 492 | |
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| 493 | i = (*cp); |
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| 494 | if (!xdr_int (xdrs, &i)) |
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| 495 | return FALSE; |
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| 496 | *cp = (char) i; |
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| 497 | return TRUE; |
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| 498 | } |
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| 499 | |
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| 500 | /* |
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| 501 | * XDR an unsigned char |
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| 502 | */ |
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| 503 | bool_t |
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| 504 | xdr_u_char (XDR * xdrs, |
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| 505 | u_char * ucp) |
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| 506 | { |
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| 507 | u_int u; |
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| 508 | |
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| 509 | u = (*ucp); |
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| 510 | if (!xdr_u_int (xdrs, &u)) |
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| 511 | return FALSE; |
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| 512 | *ucp = (u_char) u; |
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| 513 | return TRUE; |
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| 514 | } |
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| 515 | |
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| 516 | /* |
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| 517 | * XDR booleans |
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| 518 | */ |
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| 519 | bool_t |
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| 520 | xdr_bool (XDR * xdrs, |
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| 521 | bool_t * bp) |
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| 522 | { |
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| 523 | long lb; |
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| 524 | |
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| 525 | switch (xdrs->x_op) |
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| 526 | { |
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| 527 | case XDR_ENCODE: |
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| 528 | lb = *bp ? XDR_TRUE : XDR_FALSE; |
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| 529 | return XDR_PUTLONG (xdrs, &lb); |
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| 530 | |
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| 531 | case XDR_DECODE: |
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| 532 | if (!XDR_GETLONG (xdrs, &lb)) |
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| 533 | return FALSE; |
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| 534 | *bp = (lb == XDR_FALSE) ? FALSE : TRUE; |
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| 535 | return TRUE; |
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| 536 | |
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| 537 | case XDR_FREE: |
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| 538 | return TRUE; |
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| 539 | } |
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| 540 | return FALSE; |
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| 541 | } |
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| 542 | |
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| 543 | /* |
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| 544 | * XDR enumerations |
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| 545 | */ |
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| 546 | bool_t |
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| 547 | xdr_enum (XDR * xdrs, |
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| 548 | enum_t * ep) |
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| 549 | { |
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| 550 | enum sizecheck |
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| 551 | { SIZEVAL }; /* used to find the size of an enum */ |
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| 552 | |
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| 553 | /* |
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| 554 | * enums are treated as ints |
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| 555 | */ |
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| 556 | /* LINTED */ if (sizeof (enum sizecheck) == 4) |
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| 557 | { |
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| 558 | #if INT_MAX < LONG_MAX |
---|
| 559 | long l; |
---|
| 560 | switch (xdrs->x_op) |
---|
| 561 | { |
---|
| 562 | case XDR_ENCODE: |
---|
| 563 | l = (long) *ep; |
---|
| 564 | return XDR_PUTLONG (xdrs, &l); |
---|
| 565 | |
---|
| 566 | case XDR_DECODE: |
---|
| 567 | if (!XDR_GETLONG (xdrs, &l)) |
---|
| 568 | return FALSE; |
---|
| 569 | *ep = l; |
---|
| 570 | case XDR_FREE: |
---|
| 571 | return TRUE; |
---|
| 572 | } |
---|
| 573 | #else |
---|
| 574 | return xdr_long (xdrs, (long *) (void *) ep); |
---|
| 575 | #endif |
---|
| 576 | } |
---|
| 577 | else /* LINTED */ if (sizeof (enum sizecheck) == sizeof (short)) |
---|
| 578 | { |
---|
| 579 | return (xdr_short (xdrs, (short *) (void *) ep)); |
---|
| 580 | } |
---|
| 581 | return FALSE; |
---|
| 582 | } |
---|
| 583 | |
---|
| 584 | /* |
---|
| 585 | * XDR opaque data |
---|
| 586 | * Allows the specification of a fixed size sequence of opaque bytes. |
---|
| 587 | * cp points to the opaque object and cnt gives the byte length. |
---|
| 588 | */ |
---|
| 589 | bool_t |
---|
| 590 | xdr_opaque (XDR * xdrs, |
---|
| 591 | caddr_t cp, |
---|
| 592 | u_int cnt) |
---|
| 593 | { |
---|
| 594 | u_int rndup; |
---|
| 595 | static char crud[BYTES_PER_XDR_UNIT]; |
---|
| 596 | |
---|
| 597 | /* |
---|
| 598 | * if no data we are done |
---|
| 599 | */ |
---|
| 600 | if (cnt == 0) |
---|
| 601 | return TRUE; |
---|
| 602 | |
---|
| 603 | /* |
---|
| 604 | * round byte count to full xdr units |
---|
| 605 | */ |
---|
| 606 | rndup = cnt % BYTES_PER_XDR_UNIT; |
---|
| 607 | if (rndup > 0) |
---|
| 608 | rndup = BYTES_PER_XDR_UNIT - rndup; |
---|
| 609 | |
---|
| 610 | switch (xdrs->x_op) |
---|
| 611 | { |
---|
| 612 | case XDR_DECODE: |
---|
| 613 | if (!XDR_GETBYTES (xdrs, cp, cnt)) |
---|
| 614 | return FALSE; |
---|
| 615 | if (rndup == 0) |
---|
| 616 | return TRUE; |
---|
| 617 | return XDR_GETBYTES (xdrs, (caddr_t) crud, rndup); |
---|
| 618 | |
---|
| 619 | case XDR_ENCODE: |
---|
| 620 | if (!XDR_PUTBYTES (xdrs, cp, cnt)) |
---|
| 621 | return FALSE; |
---|
| 622 | if (rndup == 0) |
---|
| 623 | return TRUE; |
---|
| 624 | return (XDR_PUTBYTES (xdrs, xdr_zero, rndup)); |
---|
| 625 | |
---|
| 626 | case XDR_FREE: |
---|
| 627 | return TRUE; |
---|
| 628 | } |
---|
| 629 | return FALSE; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | /* |
---|
| 633 | * XDR counted bytes |
---|
| 634 | * *cpp is a pointer to the bytes, *sizep is the count. |
---|
| 635 | * If *cpp is NULL maxsize bytes are allocated |
---|
| 636 | */ |
---|
| 637 | bool_t |
---|
| 638 | xdr_bytes (XDR * xdrs, |
---|
| 639 | char ** cpp, |
---|
| 640 | u_int * sizep, |
---|
| 641 | u_int maxsize) |
---|
| 642 | { |
---|
| 643 | char *sp = *cpp; /* sp is the actual string pointer */ |
---|
| 644 | u_int nodesize; |
---|
| 645 | |
---|
| 646 | /* |
---|
| 647 | * first deal with the length since xdr bytes are counted |
---|
| 648 | */ |
---|
| 649 | if (!xdr_u_int (xdrs, sizep)) |
---|
| 650 | return FALSE; |
---|
| 651 | |
---|
| 652 | nodesize = *sizep; |
---|
| 653 | if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE)) |
---|
| 654 | return FALSE; |
---|
| 655 | |
---|
| 656 | /* |
---|
| 657 | * now deal with the actual bytes |
---|
| 658 | */ |
---|
| 659 | switch (xdrs->x_op) |
---|
| 660 | { |
---|
| 661 | case XDR_DECODE: |
---|
| 662 | if (nodesize == 0) |
---|
| 663 | return TRUE; |
---|
| 664 | if (sp == NULL) |
---|
| 665 | *cpp = sp = mem_alloc (nodesize); |
---|
| 666 | if (sp == NULL) |
---|
| 667 | { |
---|
| 668 | xdr_warnx ("xdr_bytes: out of memory"); |
---|
| 669 | errno = ENOMEM; |
---|
| 670 | return FALSE; |
---|
| 671 | } |
---|
| 672 | /* FALLTHROUGH */ |
---|
| 673 | |
---|
| 674 | case XDR_ENCODE: |
---|
| 675 | return xdr_opaque (xdrs, sp, nodesize); |
---|
| 676 | |
---|
| 677 | case XDR_FREE: |
---|
| 678 | if (sp != NULL) |
---|
| 679 | { |
---|
| 680 | mem_free (sp, nodesize); |
---|
| 681 | *cpp = NULL; |
---|
| 682 | } |
---|
| 683 | return TRUE; |
---|
| 684 | } |
---|
| 685 | return FALSE; |
---|
| 686 | } |
---|
| 687 | |
---|
| 688 | /* |
---|
| 689 | * Implemented here due to commonality of the object. |
---|
| 690 | */ |
---|
| 691 | bool_t |
---|
| 692 | xdr_netobj (XDR * xdrs, |
---|
| 693 | struct netobj * np) |
---|
| 694 | { |
---|
| 695 | return (xdr_bytes (xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ)); |
---|
| 696 | } |
---|
| 697 | |
---|
| 698 | /* |
---|
| 699 | * XDR a descriminated union |
---|
| 700 | * Support routine for discriminated unions. |
---|
| 701 | * You create an array of xdrdiscrim structures, terminated with |
---|
| 702 | * an entry with a null procedure pointer. The routine gets |
---|
| 703 | * the discriminant value and then searches the array of xdrdiscrims |
---|
| 704 | * looking for that value. It calls the procedure given in the xdrdiscrim |
---|
| 705 | * to handle the discriminant. If there is no specific routine a default |
---|
| 706 | * routine may be called. |
---|
| 707 | * If there is no specific or default routine an error is returned. |
---|
| 708 | * dscmp: enum to decide which arm to work on |
---|
| 709 | * unp: ptr to the union itself |
---|
| 710 | * choices: ptr to array of [value, xdr proc] for each arm |
---|
| 711 | * dfault: default xdr routine |
---|
| 712 | */ |
---|
| 713 | bool_t |
---|
| 714 | xdr_union (XDR * xdrs, |
---|
| 715 | enum_t * dscmp, |
---|
| 716 | char * unp, |
---|
| 717 | const struct xdr_discrim * choices, |
---|
| 718 | xdrproc_t dfault) |
---|
| 719 | { |
---|
| 720 | enum_t dscm; |
---|
| 721 | |
---|
| 722 | /* |
---|
| 723 | * we deal with the discriminator; it's an enum |
---|
| 724 | */ |
---|
| 725 | if (!xdr_enum (xdrs, dscmp)) |
---|
| 726 | return FALSE; |
---|
| 727 | |
---|
| 728 | dscm = *dscmp; |
---|
| 729 | |
---|
| 730 | /* |
---|
| 731 | * search choices for a value that matches the discriminator. |
---|
| 732 | * if we find one, execute the xdr routine for that value. |
---|
| 733 | */ |
---|
| 734 | for (; choices->proc != NULL_xdrproc_t; choices++) |
---|
| 735 | { |
---|
| 736 | if (choices->value == dscm) |
---|
| 737 | return ((*(choices->proc)) (xdrs, unp, LASTUNSIGNED)); |
---|
| 738 | } |
---|
| 739 | |
---|
| 740 | /* |
---|
| 741 | * no match - execute the default xdr routine if there is one |
---|
| 742 | */ |
---|
| 743 | return ((dfault == NULL_xdrproc_t) ? FALSE : (*dfault) (xdrs, unp, LASTUNSIGNED)); |
---|
| 744 | } |
---|
| 745 | |
---|
| 746 | |
---|
| 747 | /* |
---|
| 748 | * Non-portable xdr primitives. |
---|
| 749 | * Care should be taken when moving these routines to new architectures. |
---|
| 750 | */ |
---|
| 751 | |
---|
| 752 | |
---|
| 753 | /* |
---|
| 754 | * XDR null terminated ASCII strings |
---|
| 755 | * xdr_string deals with "C strings" - arrays of bytes that are |
---|
| 756 | * terminated by a NULL character. The parameter cpp references a |
---|
| 757 | * pointer to storage; If the pointer is null, then the necessary |
---|
| 758 | * storage is allocated. The last parameter is the max allowed length |
---|
| 759 | * of the string as specified by a protocol. |
---|
| 760 | */ |
---|
| 761 | bool_t |
---|
| 762 | xdr_string (XDR * xdrs, |
---|
| 763 | char ** cpp, |
---|
| 764 | u_int maxsize) |
---|
| 765 | { |
---|
| 766 | char *sp = *cpp; /* sp is the actual string pointer */ |
---|
| 767 | u_int size; |
---|
| 768 | u_int nodesize; |
---|
| 769 | |
---|
| 770 | /* |
---|
| 771 | * first deal with the length since xdr strings are counted-strings |
---|
| 772 | */ |
---|
| 773 | switch (xdrs->x_op) |
---|
| 774 | { |
---|
| 775 | case XDR_FREE: |
---|
| 776 | if (sp == NULL) |
---|
| 777 | return TRUE; /* already free */ |
---|
| 778 | |
---|
| 779 | /* FALLTHROUGH */ |
---|
| 780 | case XDR_ENCODE: |
---|
| 781 | if (sp == NULL) |
---|
| 782 | return FALSE; |
---|
| 783 | |
---|
| 784 | size = strlen (sp); |
---|
| 785 | break; |
---|
| 786 | case XDR_DECODE: |
---|
| 787 | break; |
---|
| 788 | } |
---|
| 789 | if (!xdr_u_int (xdrs, &size)) |
---|
| 790 | return FALSE; |
---|
| 791 | |
---|
| 792 | if (size > maxsize) |
---|
| 793 | return FALSE; |
---|
| 794 | |
---|
| 795 | nodesize = size + 1; |
---|
| 796 | if (nodesize == 0) |
---|
| 797 | { |
---|
| 798 | /* This means an overflow. It a bug in the caller which |
---|
| 799 | * provided a too large maxsize but nevertheless catch it |
---|
| 800 | * here. |
---|
| 801 | */ |
---|
| 802 | return FALSE; |
---|
| 803 | } |
---|
| 804 | |
---|
| 805 | /* |
---|
| 806 | * now deal with the actual bytes |
---|
| 807 | */ |
---|
| 808 | switch (xdrs->x_op) |
---|
| 809 | { |
---|
| 810 | |
---|
| 811 | case XDR_DECODE: |
---|
| 812 | if (sp == NULL) |
---|
| 813 | *cpp = sp = mem_alloc (nodesize); |
---|
| 814 | if (sp == NULL) |
---|
| 815 | { |
---|
| 816 | xdr_warnx ("xdr_string: out of memory"); |
---|
| 817 | errno = ENOMEM; |
---|
| 818 | return FALSE; |
---|
| 819 | } |
---|
| 820 | sp[size] = 0; |
---|
| 821 | /* FALLTHROUGH */ |
---|
| 822 | |
---|
| 823 | case XDR_ENCODE: |
---|
| 824 | return xdr_opaque (xdrs, sp, size); |
---|
| 825 | |
---|
| 826 | case XDR_FREE: |
---|
| 827 | mem_free (sp, nodesize); |
---|
| 828 | *cpp = NULL; |
---|
| 829 | return TRUE; |
---|
| 830 | } |
---|
| 831 | return FALSE; |
---|
| 832 | } |
---|
| 833 | |
---|
| 834 | /* |
---|
| 835 | * Wrapper for xdr_string that can be called directly from |
---|
| 836 | * routines like clnt_call |
---|
| 837 | */ |
---|
| 838 | bool_t |
---|
| 839 | xdr_wrapstring (XDR * xdrs, |
---|
| 840 | char ** cpp) |
---|
| 841 | { |
---|
| 842 | return xdr_string (xdrs, cpp, LASTUNSIGNED); |
---|
| 843 | } |
---|
| 844 | |
---|
| 845 | |
---|
| 846 | #if defined(___int64_t_defined) |
---|
| 847 | /* |
---|
| 848 | * NOTE: xdr_hyper(), xdr_u_hyper(), xdr_longlong_t(), and xdr_u_longlong_t() |
---|
| 849 | * are in the "non-portable" section because they require that a `long long' |
---|
| 850 | * be a 64-bit type. |
---|
| 851 | * |
---|
| 852 | * --thorpej@netbsd.org, November 30, 1999 |
---|
| 853 | */ |
---|
| 854 | |
---|
| 855 | /* |
---|
| 856 | * XDR 64-bit integers |
---|
| 857 | */ |
---|
| 858 | bool_t |
---|
| 859 | xdr_int64_t (XDR * xdrs, |
---|
| 860 | int64_t * llp) |
---|
| 861 | { |
---|
| 862 | int32_t t1, t2; |
---|
| 863 | |
---|
| 864 | switch (xdrs->x_op) |
---|
| 865 | { |
---|
| 866 | case XDR_ENCODE: |
---|
| 867 | t1 = (int32_t) ((*llp) >> 32); |
---|
| 868 | t2 = (int32_t) (*llp); |
---|
| 869 | return (XDR_PUTINT32 (xdrs, &t1) && XDR_PUTINT32 (xdrs, &t2)); |
---|
| 870 | |
---|
| 871 | case XDR_DECODE: |
---|
| 872 | if (!XDR_GETINT32 (xdrs, &t1) || !XDR_GETINT32 (xdrs, &t2)) |
---|
| 873 | return FALSE; |
---|
| 874 | *llp = ((int64_t) t1) << 32; |
---|
| 875 | *llp |= (uint32_t) t2; |
---|
| 876 | return TRUE; |
---|
| 877 | |
---|
| 878 | case XDR_FREE: |
---|
| 879 | return TRUE; |
---|
| 880 | } |
---|
| 881 | return FALSE; |
---|
| 882 | } |
---|
| 883 | |
---|
| 884 | |
---|
| 885 | /* |
---|
| 886 | * XDR unsigned 64-bit integers |
---|
| 887 | */ |
---|
| 888 | bool_t |
---|
| 889 | xdr_u_int64_t (XDR * xdrs, |
---|
| 890 | u_int64_t * ullp) |
---|
| 891 | { |
---|
| 892 | uint32_t t1, t2; |
---|
| 893 | |
---|
| 894 | switch (xdrs->x_op) |
---|
| 895 | { |
---|
| 896 | case XDR_ENCODE: |
---|
| 897 | t1 = (uint32_t) ((*ullp) >> 32); |
---|
| 898 | t2 = (uint32_t) (*ullp); |
---|
| 899 | return (XDR_PUTINT32 (xdrs, (int32_t *)&t1) && |
---|
| 900 | XDR_PUTINT32 (xdrs, (int32_t *)&t2)); |
---|
| 901 | |
---|
| 902 | case XDR_DECODE: |
---|
| 903 | if (!XDR_GETINT32 (xdrs, (int32_t *)&t1) || |
---|
| 904 | !XDR_GETINT32 (xdrs, (int32_t *)&t2)) |
---|
| 905 | return FALSE; |
---|
| 906 | *ullp = ((u_int64_t) t1) << 32; |
---|
| 907 | *ullp |= t2; |
---|
| 908 | return TRUE; |
---|
| 909 | |
---|
| 910 | case XDR_FREE: |
---|
| 911 | return TRUE; |
---|
| 912 | } |
---|
| 913 | return FALSE; |
---|
| 914 | } |
---|
| 915 | |
---|
| 916 | /* |
---|
| 917 | * XDR unsigned 64-bit integers |
---|
| 918 | */ |
---|
| 919 | bool_t |
---|
| 920 | xdr_uint64_t (XDR * xdrs, |
---|
| 921 | uint64_t * ullp) |
---|
| 922 | { |
---|
| 923 | uint32_t t1, t2; |
---|
| 924 | |
---|
| 925 | switch (xdrs->x_op) |
---|
| 926 | { |
---|
| 927 | case XDR_ENCODE: |
---|
| 928 | t1 = (uint32_t) ((*ullp) >> 32); |
---|
| 929 | t2 = (uint32_t) (*ullp); |
---|
| 930 | return (XDR_PUTINT32 (xdrs, (int32_t *)&t1) && |
---|
| 931 | XDR_PUTINT32 (xdrs, (int32_t *)&t2)); |
---|
| 932 | |
---|
| 933 | case XDR_DECODE: |
---|
| 934 | if (!XDR_GETINT32 (xdrs, (int32_t *)&t1) || |
---|
| 935 | !XDR_GETINT32 (xdrs, (int32_t *)&t2)) |
---|
| 936 | return FALSE; |
---|
| 937 | *ullp = ((uint64_t) t1) << 32; |
---|
| 938 | *ullp |= t2; |
---|
| 939 | return TRUE; |
---|
| 940 | |
---|
| 941 | case XDR_FREE: |
---|
| 942 | return TRUE; |
---|
| 943 | } |
---|
| 944 | return FALSE; |
---|
| 945 | } |
---|
| 946 | |
---|
| 947 | |
---|
| 948 | /* |
---|
| 949 | * XDR hypers |
---|
| 950 | */ |
---|
| 951 | bool_t |
---|
| 952 | xdr_hyper (XDR * xdrs, |
---|
| 953 | quad_t * llp) |
---|
| 954 | { |
---|
| 955 | /* |
---|
| 956 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
| 957 | * call xdr_int64_t(). |
---|
| 958 | */ |
---|
| 959 | return (xdr_int64_t (xdrs, (int64_t *) llp)); |
---|
| 960 | } |
---|
| 961 | |
---|
| 962 | |
---|
| 963 | /* |
---|
| 964 | * XDR unsigned hypers |
---|
| 965 | */ |
---|
| 966 | bool_t |
---|
| 967 | xdr_u_hyper (XDR * xdrs, |
---|
| 968 | u_quad_t * ullp) |
---|
| 969 | { |
---|
| 970 | /* |
---|
| 971 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
| 972 | * call xdr_uint64_t(). |
---|
| 973 | */ |
---|
| 974 | return (xdr_uint64_t (xdrs, (uint64_t *) ullp)); |
---|
| 975 | } |
---|
| 976 | |
---|
| 977 | |
---|
| 978 | /* |
---|
| 979 | * XDR longlong_t's |
---|
| 980 | */ |
---|
| 981 | bool_t |
---|
| 982 | xdr_longlong_t (XDR * xdrs, |
---|
| 983 | quad_t * llp) |
---|
| 984 | { |
---|
| 985 | /* |
---|
| 986 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
| 987 | * call xdr_int64_t(). |
---|
| 988 | */ |
---|
| 989 | return (xdr_int64_t (xdrs, (int64_t *) llp)); |
---|
| 990 | } |
---|
| 991 | |
---|
| 992 | |
---|
| 993 | /* |
---|
| 994 | * XDR u_longlong_t's |
---|
| 995 | */ |
---|
| 996 | bool_t |
---|
| 997 | xdr_u_longlong_t (XDR * xdrs, |
---|
| 998 | u_quad_t *ullp) |
---|
| 999 | { |
---|
| 1000 | /* |
---|
| 1001 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
| 1002 | * call xdr_u_int64_t(). |
---|
| 1003 | */ |
---|
| 1004 | return (xdr_uint64_t (xdrs, (uint64_t *) ullp)); |
---|
| 1005 | } |
---|
| 1006 | |
---|
| 1007 | #endif /* ___int64_t_defined */ |
---|
| 1008 | |
---|