1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* $NetBSD: xdr.c,v 1.22 2000/07/06 03:10:35 christos Exp $ */ |
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4 | |
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5 | /*- |
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6 | * SPDX-License-Identifier: BSD-3-Clause |
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7 | * |
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8 | * Copyright (c) 2010, Oracle America, Inc. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions are |
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12 | * met: |
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13 | * |
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14 | * * Redistributions of source code must retain the above copyright |
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15 | * notice, this list of conditions and the following disclaimer. |
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16 | * * Redistributions in binary form must reproduce the above |
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17 | * copyright notice, this list of conditions and the following |
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18 | * disclaimer in the documentation and/or other materials |
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19 | * provided with the distribution. |
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20 | * * Neither the name of the "Oracle America, Inc." nor the names of its |
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21 | * contributors may be used to endorse or promote products derived |
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22 | * from this software without specific prior written permission. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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25 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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26 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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27 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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28 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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29 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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31 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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33 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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35 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | #if defined(LIBC_SCCS) && !defined(lint) |
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39 | static char *sccsid2 = "@(#)xdr.c 1.35 87/08/12"; |
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40 | static char *sccsid = "@(#)xdr.c 2.1 88/07/29 4.0 RPCSRC"; |
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41 | #endif |
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42 | #include <sys/cdefs.h> |
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43 | __FBSDID("$FreeBSD$"); |
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44 | |
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45 | /* |
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46 | * xdr.c, Generic XDR routines implementation. |
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47 | * |
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48 | * These are the "generic" xdr routines used to serialize and de-serialize |
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49 | * most common data items. See xdr.h for more info on the interface to |
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50 | * xdr. |
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51 | */ |
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52 | |
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53 | #include "namespace.h" |
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54 | #include <err.h> |
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55 | #include <stdio.h> |
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56 | #include <stdlib.h> |
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57 | #include <string.h> |
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58 | |
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59 | #include <rpc/rpc.h> |
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60 | #include <rpc/rpc_com.h> |
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61 | #include <rpc/types.h> |
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62 | #include <rpc/xdr.h> |
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63 | #include "un-namespace.h" |
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64 | |
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65 | typedef quad_t longlong_t; /* ANSI long long type */ |
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66 | typedef u_quad_t u_longlong_t; /* ANSI unsigned long long type */ |
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67 | |
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68 | /* |
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69 | * constants specific to the xdr "protocol" |
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70 | */ |
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71 | #define XDR_FALSE ((long) 0) |
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72 | #define XDR_TRUE ((long) 1) |
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73 | |
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74 | /* |
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75 | * for unit alignment |
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76 | */ |
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77 | static const char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 }; |
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78 | |
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79 | /* |
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80 | * Free a data structure using XDR |
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81 | * Not a filter, but a convenient utility nonetheless |
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82 | */ |
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83 | void |
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84 | xdr_free(xdrproc_t proc, void *objp) |
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85 | { |
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86 | XDR x; |
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87 | |
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88 | x.x_op = XDR_FREE; |
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89 | (*proc)(&x, objp); |
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90 | } |
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91 | |
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92 | /* |
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93 | * XDR nothing |
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94 | */ |
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95 | bool_t |
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96 | xdr_void(void) |
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97 | { |
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98 | |
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99 | return (TRUE); |
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100 | } |
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101 | |
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102 | |
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103 | /* |
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104 | * XDR integers |
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105 | */ |
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106 | bool_t |
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107 | xdr_int(XDR *xdrs, int *ip) |
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108 | { |
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109 | long l; |
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110 | |
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111 | switch (xdrs->x_op) { |
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112 | |
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113 | case XDR_ENCODE: |
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114 | l = (long) *ip; |
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115 | return (XDR_PUTLONG(xdrs, &l)); |
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116 | |
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117 | case XDR_DECODE: |
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118 | if (!XDR_GETLONG(xdrs, &l)) { |
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119 | return (FALSE); |
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120 | } |
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121 | *ip = (int) l; |
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122 | return (TRUE); |
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123 | |
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124 | case XDR_FREE: |
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125 | return (TRUE); |
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126 | } |
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127 | /* NOTREACHED */ |
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128 | return (FALSE); |
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129 | } |
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130 | |
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131 | /* |
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132 | * XDR unsigned integers |
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133 | */ |
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134 | bool_t |
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135 | xdr_u_int(XDR *xdrs, u_int *up) |
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136 | { |
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137 | u_long l; |
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138 | |
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139 | switch (xdrs->x_op) { |
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140 | |
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141 | case XDR_ENCODE: |
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142 | l = (u_long) *up; |
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143 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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144 | |
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145 | case XDR_DECODE: |
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146 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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147 | return (FALSE); |
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148 | } |
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149 | *up = (u_int) l; |
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150 | return (TRUE); |
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151 | |
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152 | case XDR_FREE: |
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153 | return (TRUE); |
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154 | } |
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155 | /* NOTREACHED */ |
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156 | return (FALSE); |
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157 | } |
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158 | |
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159 | |
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160 | /* |
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161 | * XDR long integers |
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162 | * same as xdr_u_long - open coded to save a proc call! |
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163 | */ |
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164 | bool_t |
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165 | xdr_long(XDR *xdrs, long *lp) |
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166 | { |
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167 | switch (xdrs->x_op) { |
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168 | case XDR_ENCODE: |
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169 | return (XDR_PUTLONG(xdrs, lp)); |
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170 | case XDR_DECODE: |
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171 | return (XDR_GETLONG(xdrs, lp)); |
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172 | case XDR_FREE: |
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173 | return (TRUE); |
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174 | } |
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175 | /* NOTREACHED */ |
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176 | return (FALSE); |
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177 | } |
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178 | |
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179 | /* |
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180 | * XDR unsigned long integers |
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181 | * same as xdr_long - open coded to save a proc call! |
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182 | */ |
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183 | bool_t |
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184 | xdr_u_long(XDR *xdrs, u_long *ulp) |
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185 | { |
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186 | switch (xdrs->x_op) { |
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187 | case XDR_ENCODE: |
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188 | return (XDR_PUTLONG(xdrs, (long *)ulp)); |
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189 | case XDR_DECODE: |
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190 | return (XDR_GETLONG(xdrs, (long *)ulp)); |
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191 | case XDR_FREE: |
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192 | return (TRUE); |
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193 | } |
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194 | /* NOTREACHED */ |
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195 | return (FALSE); |
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196 | } |
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197 | |
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198 | |
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199 | /* |
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200 | * XDR 32-bit integers |
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201 | * same as xdr_u_int32_t - open coded to save a proc call! |
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202 | */ |
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203 | bool_t |
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204 | xdr_int32_t(XDR *xdrs, int32_t *int32_p) |
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205 | { |
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206 | long l; |
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207 | |
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208 | switch (xdrs->x_op) { |
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209 | |
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210 | case XDR_ENCODE: |
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211 | l = (long) *int32_p; |
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212 | return (XDR_PUTLONG(xdrs, &l)); |
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213 | |
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214 | case XDR_DECODE: |
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215 | if (!XDR_GETLONG(xdrs, &l)) { |
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216 | return (FALSE); |
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217 | } |
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218 | *int32_p = (int32_t) l; |
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219 | return (TRUE); |
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220 | |
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221 | case XDR_FREE: |
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222 | return (TRUE); |
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223 | } |
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224 | /* NOTREACHED */ |
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225 | return (FALSE); |
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226 | } |
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227 | |
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228 | /* |
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229 | * XDR unsigned 32-bit integers |
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230 | * same as xdr_int32_t - open coded to save a proc call! |
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231 | */ |
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232 | bool_t |
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233 | xdr_u_int32_t(XDR *xdrs, u_int32_t *u_int32_p) |
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234 | { |
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235 | u_long l; |
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236 | |
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237 | switch (xdrs->x_op) { |
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238 | |
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239 | case XDR_ENCODE: |
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240 | l = (u_long) *u_int32_p; |
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241 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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242 | |
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243 | case XDR_DECODE: |
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244 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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245 | return (FALSE); |
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246 | } |
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247 | *u_int32_p = (u_int32_t) l; |
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248 | return (TRUE); |
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249 | |
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250 | case XDR_FREE: |
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251 | return (TRUE); |
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252 | } |
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253 | /* NOTREACHED */ |
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254 | return (FALSE); |
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255 | } |
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256 | |
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257 | /* |
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258 | * XDR unsigned 32-bit integers |
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259 | * same as xdr_int32_t - open coded to save a proc call! |
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260 | */ |
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261 | bool_t |
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262 | xdr_uint32_t(XDR *xdrs, uint32_t *u_int32_p) |
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263 | { |
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264 | u_long l; |
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265 | |
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266 | switch (xdrs->x_op) { |
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267 | |
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268 | case XDR_ENCODE: |
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269 | l = (u_long) *u_int32_p; |
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270 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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271 | |
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272 | case XDR_DECODE: |
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273 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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274 | return (FALSE); |
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275 | } |
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276 | *u_int32_p = (u_int32_t) l; |
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277 | return (TRUE); |
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278 | |
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279 | case XDR_FREE: |
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280 | return (TRUE); |
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281 | } |
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282 | /* NOTREACHED */ |
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283 | return (FALSE); |
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284 | } |
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285 | |
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286 | /* |
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287 | * XDR short integers |
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288 | */ |
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289 | bool_t |
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290 | xdr_short(XDR *xdrs, short *sp) |
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291 | { |
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292 | long l; |
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293 | |
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294 | switch (xdrs->x_op) { |
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295 | |
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296 | case XDR_ENCODE: |
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297 | l = (long) *sp; |
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298 | return (XDR_PUTLONG(xdrs, &l)); |
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299 | |
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300 | case XDR_DECODE: |
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301 | if (!XDR_GETLONG(xdrs, &l)) { |
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302 | return (FALSE); |
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303 | } |
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304 | *sp = (short) l; |
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305 | return (TRUE); |
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306 | |
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307 | case XDR_FREE: |
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308 | return (TRUE); |
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309 | } |
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310 | /* NOTREACHED */ |
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311 | return (FALSE); |
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312 | } |
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313 | |
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314 | /* |
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315 | * XDR unsigned short integers |
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316 | */ |
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317 | bool_t |
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318 | xdr_u_short(XDR *xdrs, u_short *usp) |
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319 | { |
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320 | u_long l; |
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321 | |
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322 | switch (xdrs->x_op) { |
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323 | |
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324 | case XDR_ENCODE: |
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325 | l = (u_long) *usp; |
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326 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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327 | |
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328 | case XDR_DECODE: |
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329 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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330 | return (FALSE); |
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331 | } |
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332 | *usp = (u_short) l; |
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333 | return (TRUE); |
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334 | |
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335 | case XDR_FREE: |
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336 | return (TRUE); |
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337 | } |
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338 | /* NOTREACHED */ |
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339 | return (FALSE); |
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340 | } |
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341 | |
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342 | |
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343 | /* |
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344 | * XDR 16-bit integers |
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345 | */ |
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346 | bool_t |
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347 | xdr_int16_t(XDR *xdrs, int16_t *int16_p) |
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348 | { |
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349 | long l; |
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350 | |
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351 | switch (xdrs->x_op) { |
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352 | |
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353 | case XDR_ENCODE: |
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354 | l = (long) *int16_p; |
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355 | return (XDR_PUTLONG(xdrs, &l)); |
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356 | |
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357 | case XDR_DECODE: |
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358 | if (!XDR_GETLONG(xdrs, &l)) { |
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359 | return (FALSE); |
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360 | } |
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361 | *int16_p = (int16_t) l; |
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362 | return (TRUE); |
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363 | |
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364 | case XDR_FREE: |
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365 | return (TRUE); |
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366 | } |
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367 | /* NOTREACHED */ |
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368 | return (FALSE); |
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369 | } |
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370 | |
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371 | /* |
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372 | * XDR unsigned 16-bit integers |
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373 | */ |
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374 | bool_t |
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375 | xdr_u_int16_t(XDR *xdrs, u_int16_t *u_int16_p) |
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376 | { |
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377 | u_long l; |
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378 | |
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379 | switch (xdrs->x_op) { |
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380 | |
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381 | case XDR_ENCODE: |
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382 | l = (u_long) *u_int16_p; |
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383 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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384 | |
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385 | case XDR_DECODE: |
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386 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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387 | return (FALSE); |
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388 | } |
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389 | *u_int16_p = (u_int16_t) l; |
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390 | return (TRUE); |
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391 | |
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392 | case XDR_FREE: |
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393 | return (TRUE); |
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394 | } |
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395 | /* NOTREACHED */ |
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396 | return (FALSE); |
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397 | } |
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398 | |
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399 | /* |
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400 | * XDR unsigned 16-bit integers |
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401 | */ |
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402 | bool_t |
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403 | xdr_uint16_t(XDR *xdrs, uint16_t *u_int16_p) |
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404 | { |
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405 | u_long l; |
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406 | |
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407 | switch (xdrs->x_op) { |
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408 | |
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409 | case XDR_ENCODE: |
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410 | l = (u_long) *u_int16_p; |
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411 | return (XDR_PUTLONG(xdrs, (long *)&l)); |
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412 | |
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413 | case XDR_DECODE: |
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414 | if (!XDR_GETLONG(xdrs, (long *)&l)) { |
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415 | return (FALSE); |
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416 | } |
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417 | *u_int16_p = (u_int16_t) l; |
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418 | return (TRUE); |
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419 | |
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420 | case XDR_FREE: |
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421 | return (TRUE); |
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422 | } |
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423 | /* NOTREACHED */ |
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424 | return (FALSE); |
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425 | } |
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426 | |
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427 | |
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428 | /* |
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429 | * XDR a char |
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430 | */ |
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431 | bool_t |
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432 | xdr_char(XDR *xdrs, char *cp) |
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433 | { |
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434 | int i; |
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435 | |
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436 | i = (*cp); |
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437 | if (!xdr_int(xdrs, &i)) { |
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438 | return (FALSE); |
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439 | } |
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440 | *cp = i; |
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441 | return (TRUE); |
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442 | } |
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443 | |
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444 | /* |
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445 | * XDR an unsigned char |
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446 | */ |
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447 | bool_t |
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448 | xdr_u_char(XDR *xdrs, u_char *cp) |
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449 | { |
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450 | u_int u; |
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451 | |
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452 | u = (*cp); |
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453 | if (!xdr_u_int(xdrs, &u)) { |
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454 | return (FALSE); |
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455 | } |
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456 | *cp = u; |
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457 | return (TRUE); |
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458 | } |
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459 | |
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460 | /* |
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461 | * XDR booleans |
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462 | */ |
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463 | bool_t |
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464 | xdr_bool(XDR *xdrs, bool_t *bp) |
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465 | { |
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466 | long lb; |
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467 | |
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468 | switch (xdrs->x_op) { |
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469 | |
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470 | case XDR_ENCODE: |
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471 | lb = *bp ? XDR_TRUE : XDR_FALSE; |
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472 | return (XDR_PUTLONG(xdrs, &lb)); |
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473 | |
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474 | case XDR_DECODE: |
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475 | if (!XDR_GETLONG(xdrs, &lb)) { |
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476 | return (FALSE); |
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477 | } |
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478 | *bp = (lb == XDR_FALSE) ? FALSE : TRUE; |
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479 | return (TRUE); |
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480 | |
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481 | case XDR_FREE: |
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482 | return (TRUE); |
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483 | } |
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484 | /* NOTREACHED */ |
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485 | return (FALSE); |
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486 | } |
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487 | |
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488 | /* |
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489 | * XDR enumerations |
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490 | */ |
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491 | bool_t |
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492 | xdr_enum(XDR *xdrs, enum_t *ep) |
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493 | { |
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494 | /* |
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495 | * enums are treated as ints |
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496 | */ |
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497 | /* LINTED */ if (sizeof (enum_t) == sizeof (long)) { |
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498 | return (xdr_long(xdrs, (long *)(void *)ep)); |
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499 | } else /* LINTED */ if (sizeof (enum_t) == sizeof (int)) { |
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500 | return (xdr_int(xdrs, (int *)(void *)ep)); |
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501 | } else /* LINTED */ if (sizeof (enum_t) == sizeof (short)) { |
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502 | return (xdr_short(xdrs, (short *)(void *)ep)); |
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503 | } else { |
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504 | return (FALSE); |
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505 | } |
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506 | } |
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507 | |
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508 | /* |
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509 | * XDR opaque data |
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510 | * Allows the specification of a fixed size sequence of opaque bytes. |
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511 | * cp points to the opaque object and cnt gives the byte length. |
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512 | */ |
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513 | bool_t |
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514 | xdr_opaque(XDR *xdrs, caddr_t cp, u_int cnt) |
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515 | { |
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516 | u_int rndup; |
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517 | static int crud[BYTES_PER_XDR_UNIT]; |
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518 | |
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519 | /* |
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520 | * if no data we are done |
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521 | */ |
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522 | if (cnt == 0) |
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523 | return (TRUE); |
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524 | |
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525 | /* |
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526 | * round byte count to full xdr units |
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527 | */ |
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528 | rndup = cnt % BYTES_PER_XDR_UNIT; |
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529 | if (rndup > 0) |
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530 | rndup = BYTES_PER_XDR_UNIT - rndup; |
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531 | |
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532 | if (xdrs->x_op == XDR_DECODE) { |
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533 | if (!XDR_GETBYTES(xdrs, cp, cnt)) { |
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534 | return (FALSE); |
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535 | } |
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536 | if (rndup == 0) |
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537 | return (TRUE); |
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538 | return (XDR_GETBYTES(xdrs, (caddr_t)(void *)crud, rndup)); |
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539 | } |
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540 | |
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541 | if (xdrs->x_op == XDR_ENCODE) { |
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542 | if (!XDR_PUTBYTES(xdrs, cp, cnt)) { |
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543 | return (FALSE); |
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544 | } |
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545 | if (rndup == 0) |
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546 | return (TRUE); |
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547 | return (XDR_PUTBYTES(xdrs, xdr_zero, rndup)); |
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548 | } |
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549 | |
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550 | if (xdrs->x_op == XDR_FREE) { |
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551 | return (TRUE); |
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552 | } |
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553 | |
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554 | return (FALSE); |
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555 | } |
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556 | |
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557 | /* |
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558 | * XDR counted bytes |
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559 | * *cpp is a pointer to the bytes, *sizep is the count. |
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560 | * If *cpp is NULL maxsize bytes are allocated |
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561 | */ |
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562 | bool_t |
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563 | xdr_bytes(XDR *xdrs, char **cpp, u_int *sizep, u_int maxsize) |
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564 | { |
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565 | char *sp = *cpp; /* sp is the actual string pointer */ |
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566 | u_int nodesize; |
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567 | bool_t ret, allocated = FALSE; |
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568 | |
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569 | /* |
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570 | * first deal with the length since xdr bytes are counted |
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571 | */ |
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572 | if (! xdr_u_int(xdrs, sizep)) { |
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573 | return (FALSE); |
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574 | } |
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575 | nodesize = *sizep; |
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576 | if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE)) { |
---|
577 | return (FALSE); |
---|
578 | } |
---|
579 | |
---|
580 | /* |
---|
581 | * now deal with the actual bytes |
---|
582 | */ |
---|
583 | switch (xdrs->x_op) { |
---|
584 | |
---|
585 | case XDR_DECODE: |
---|
586 | if (nodesize == 0) { |
---|
587 | return (TRUE); |
---|
588 | } |
---|
589 | if (sp == NULL) { |
---|
590 | *cpp = sp = mem_alloc(nodesize); |
---|
591 | allocated = TRUE; |
---|
592 | } |
---|
593 | if (sp == NULL) { |
---|
594 | warnx("xdr_bytes: out of memory"); |
---|
595 | return (FALSE); |
---|
596 | } |
---|
597 | /* FALLTHROUGH */ |
---|
598 | |
---|
599 | case XDR_ENCODE: |
---|
600 | ret = xdr_opaque(xdrs, sp, nodesize); |
---|
601 | if ((xdrs->x_op == XDR_DECODE) && (ret == FALSE)) { |
---|
602 | if (allocated == TRUE) { |
---|
603 | free(sp); |
---|
604 | *cpp = NULL; |
---|
605 | } |
---|
606 | } |
---|
607 | return (ret); |
---|
608 | |
---|
609 | case XDR_FREE: |
---|
610 | if (sp != NULL) { |
---|
611 | mem_free(sp, nodesize); |
---|
612 | *cpp = NULL; |
---|
613 | } |
---|
614 | return (TRUE); |
---|
615 | } |
---|
616 | /* NOTREACHED */ |
---|
617 | return (FALSE); |
---|
618 | } |
---|
619 | |
---|
620 | /* |
---|
621 | * Implemented here due to commonality of the object. |
---|
622 | */ |
---|
623 | bool_t |
---|
624 | xdr_netobj(XDR *xdrs, struct netobj *np) |
---|
625 | { |
---|
626 | |
---|
627 | return (xdr_bytes(xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ)); |
---|
628 | } |
---|
629 | |
---|
630 | /* |
---|
631 | * XDR a descriminated union |
---|
632 | * Support routine for discriminated unions. |
---|
633 | * You create an array of xdrdiscrim structures, terminated with |
---|
634 | * an entry with a null procedure pointer. The routine gets |
---|
635 | * the discriminant value and then searches the array of xdrdiscrims |
---|
636 | * looking for that value. It calls the procedure given in the xdrdiscrim |
---|
637 | * to handle the discriminant. If there is no specific routine a default |
---|
638 | * routine may be called. |
---|
639 | * If there is no specific or default routine an error is returned. |
---|
640 | */ |
---|
641 | bool_t |
---|
642 | xdr_union(XDR *xdrs, enum_t *dscmp, char *unp, const struct xdr_discrim *choices, xdrproc_t dfault) |
---|
643 | /* |
---|
644 | * XDR *xdrs; |
---|
645 | * enum_t *dscmp; // enum to decide which arm to work on |
---|
646 | * char *unp; // the union itself |
---|
647 | * const struct xdr_discrim *choices; // [value, xdr proc] for each arm |
---|
648 | * xdrproc_t dfault; // default xdr routine |
---|
649 | */ |
---|
650 | { |
---|
651 | enum_t dscm; |
---|
652 | |
---|
653 | /* |
---|
654 | * we deal with the discriminator; it's an enum |
---|
655 | */ |
---|
656 | if (! xdr_enum(xdrs, dscmp)) { |
---|
657 | return (FALSE); |
---|
658 | } |
---|
659 | dscm = *dscmp; |
---|
660 | |
---|
661 | /* |
---|
662 | * search choices for a value that matches the discriminator. |
---|
663 | * if we find one, execute the xdr routine for that value. |
---|
664 | */ |
---|
665 | for (; choices->proc != NULL_xdrproc_t; choices++) { |
---|
666 | if (choices->value == dscm) |
---|
667 | return ((*(choices->proc))(xdrs, unp)); |
---|
668 | } |
---|
669 | |
---|
670 | /* |
---|
671 | * no match - execute the default xdr routine if there is one |
---|
672 | */ |
---|
673 | return ((dfault == NULL_xdrproc_t) ? FALSE : |
---|
674 | (*dfault)(xdrs, unp)); |
---|
675 | } |
---|
676 | |
---|
677 | |
---|
678 | /* |
---|
679 | * Non-portable xdr primitives. |
---|
680 | * Care should be taken when moving these routines to new architectures. |
---|
681 | */ |
---|
682 | |
---|
683 | |
---|
684 | /* |
---|
685 | * XDR null terminated ASCII strings |
---|
686 | * xdr_string deals with "C strings" - arrays of bytes that are |
---|
687 | * terminated by a NULL character. The parameter cpp references a |
---|
688 | * pointer to storage; If the pointer is null, then the necessary |
---|
689 | * storage is allocated. The last parameter is the max allowed length |
---|
690 | * of the string as specified by a protocol. |
---|
691 | */ |
---|
692 | bool_t |
---|
693 | xdr_string(XDR *xdrs, char **cpp, u_int maxsize) |
---|
694 | { |
---|
695 | char *sp = *cpp; /* sp is the actual string pointer */ |
---|
696 | u_int size; |
---|
697 | u_int nodesize; |
---|
698 | bool_t ret, allocated = FALSE; |
---|
699 | |
---|
700 | /* |
---|
701 | * first deal with the length since xdr strings are counted-strings |
---|
702 | */ |
---|
703 | switch (xdrs->x_op) { |
---|
704 | case XDR_FREE: |
---|
705 | if (sp == NULL) { |
---|
706 | return(TRUE); /* already free */ |
---|
707 | } |
---|
708 | /* FALLTHROUGH */ |
---|
709 | case XDR_ENCODE: |
---|
710 | size = strlen(sp); |
---|
711 | break; |
---|
712 | case XDR_DECODE: |
---|
713 | break; |
---|
714 | } |
---|
715 | if (! xdr_u_int(xdrs, &size)) { |
---|
716 | return (FALSE); |
---|
717 | } |
---|
718 | if (size > maxsize) { |
---|
719 | return (FALSE); |
---|
720 | } |
---|
721 | nodesize = size + 1; |
---|
722 | |
---|
723 | /* |
---|
724 | * now deal with the actual bytes |
---|
725 | */ |
---|
726 | switch (xdrs->x_op) { |
---|
727 | |
---|
728 | case XDR_DECODE: |
---|
729 | if (nodesize == 0) { |
---|
730 | return (TRUE); |
---|
731 | } |
---|
732 | if (sp == NULL) { |
---|
733 | *cpp = sp = mem_alloc(nodesize); |
---|
734 | allocated = TRUE; |
---|
735 | } |
---|
736 | if (sp == NULL) { |
---|
737 | warnx("xdr_string: out of memory"); |
---|
738 | return (FALSE); |
---|
739 | } |
---|
740 | sp[size] = 0; |
---|
741 | /* FALLTHROUGH */ |
---|
742 | |
---|
743 | case XDR_ENCODE: |
---|
744 | ret = xdr_opaque(xdrs, sp, size); |
---|
745 | if ((xdrs->x_op == XDR_DECODE) && (ret == FALSE)) { |
---|
746 | if (allocated == TRUE) { |
---|
747 | free(sp); |
---|
748 | *cpp = NULL; |
---|
749 | } |
---|
750 | } |
---|
751 | return (ret); |
---|
752 | |
---|
753 | case XDR_FREE: |
---|
754 | mem_free(sp, nodesize); |
---|
755 | *cpp = NULL; |
---|
756 | return (TRUE); |
---|
757 | } |
---|
758 | /* NOTREACHED */ |
---|
759 | return (FALSE); |
---|
760 | } |
---|
761 | |
---|
762 | /* |
---|
763 | * Wrapper for xdr_string that can be called directly from |
---|
764 | * routines like clnt_call |
---|
765 | */ |
---|
766 | bool_t |
---|
767 | xdr_wrapstring(XDR *xdrs, char **cpp) |
---|
768 | { |
---|
769 | return xdr_string(xdrs, cpp, RPC_MAXDATASIZE); |
---|
770 | } |
---|
771 | |
---|
772 | /* |
---|
773 | * NOTE: xdr_hyper(), xdr_u_hyper(), xdr_longlong_t(), and xdr_u_longlong_t() |
---|
774 | * are in the "non-portable" section because they require that a `long long' |
---|
775 | * be a 64-bit type. |
---|
776 | * |
---|
777 | * --thorpej@netbsd.org, November 30, 1999 |
---|
778 | */ |
---|
779 | |
---|
780 | /* |
---|
781 | * XDR 64-bit integers |
---|
782 | */ |
---|
783 | bool_t |
---|
784 | xdr_int64_t(XDR *xdrs, int64_t *llp) |
---|
785 | { |
---|
786 | u_long ul[2]; |
---|
787 | |
---|
788 | switch (xdrs->x_op) { |
---|
789 | case XDR_ENCODE: |
---|
790 | ul[0] = (u_long)((u_int64_t)*llp >> 32) & 0xffffffff; |
---|
791 | ul[1] = (u_long)((u_int64_t)*llp) & 0xffffffff; |
---|
792 | if (XDR_PUTLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
793 | return (FALSE); |
---|
794 | return (XDR_PUTLONG(xdrs, (long *)&ul[1])); |
---|
795 | case XDR_DECODE: |
---|
796 | if (XDR_GETLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
797 | return (FALSE); |
---|
798 | if (XDR_GETLONG(xdrs, (long *)&ul[1]) == FALSE) |
---|
799 | return (FALSE); |
---|
800 | *llp = (int64_t) |
---|
801 | (((u_int64_t)ul[0] << 32) | ((u_int64_t)ul[1])); |
---|
802 | return (TRUE); |
---|
803 | case XDR_FREE: |
---|
804 | return (TRUE); |
---|
805 | } |
---|
806 | /* NOTREACHED */ |
---|
807 | return (FALSE); |
---|
808 | } |
---|
809 | |
---|
810 | |
---|
811 | /* |
---|
812 | * XDR unsigned 64-bit integers |
---|
813 | */ |
---|
814 | bool_t |
---|
815 | xdr_u_int64_t(XDR *xdrs, u_int64_t *ullp) |
---|
816 | { |
---|
817 | u_long ul[2]; |
---|
818 | |
---|
819 | switch (xdrs->x_op) { |
---|
820 | case XDR_ENCODE: |
---|
821 | ul[0] = (u_long)(*ullp >> 32) & 0xffffffff; |
---|
822 | ul[1] = (u_long)(*ullp) & 0xffffffff; |
---|
823 | if (XDR_PUTLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
824 | return (FALSE); |
---|
825 | return (XDR_PUTLONG(xdrs, (long *)&ul[1])); |
---|
826 | case XDR_DECODE: |
---|
827 | if (XDR_GETLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
828 | return (FALSE); |
---|
829 | if (XDR_GETLONG(xdrs, (long *)&ul[1]) == FALSE) |
---|
830 | return (FALSE); |
---|
831 | *ullp = (u_int64_t) |
---|
832 | (((u_int64_t)ul[0] << 32) | ((u_int64_t)ul[1])); |
---|
833 | return (TRUE); |
---|
834 | case XDR_FREE: |
---|
835 | return (TRUE); |
---|
836 | } |
---|
837 | /* NOTREACHED */ |
---|
838 | return (FALSE); |
---|
839 | } |
---|
840 | |
---|
841 | /* |
---|
842 | * XDR unsigned 64-bit integers |
---|
843 | */ |
---|
844 | bool_t |
---|
845 | xdr_uint64_t(XDR *xdrs, uint64_t *ullp) |
---|
846 | { |
---|
847 | u_long ul[2]; |
---|
848 | |
---|
849 | switch (xdrs->x_op) { |
---|
850 | case XDR_ENCODE: |
---|
851 | ul[0] = (u_long)(*ullp >> 32) & 0xffffffff; |
---|
852 | ul[1] = (u_long)(*ullp) & 0xffffffff; |
---|
853 | if (XDR_PUTLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
854 | return (FALSE); |
---|
855 | return (XDR_PUTLONG(xdrs, (long *)&ul[1])); |
---|
856 | case XDR_DECODE: |
---|
857 | if (XDR_GETLONG(xdrs, (long *)&ul[0]) == FALSE) |
---|
858 | return (FALSE); |
---|
859 | if (XDR_GETLONG(xdrs, (long *)&ul[1]) == FALSE) |
---|
860 | return (FALSE); |
---|
861 | *ullp = (u_int64_t) |
---|
862 | (((u_int64_t)ul[0] << 32) | ((u_int64_t)ul[1])); |
---|
863 | return (TRUE); |
---|
864 | case XDR_FREE: |
---|
865 | return (TRUE); |
---|
866 | } |
---|
867 | /* NOTREACHED */ |
---|
868 | return (FALSE); |
---|
869 | } |
---|
870 | |
---|
871 | |
---|
872 | /* |
---|
873 | * XDR hypers |
---|
874 | */ |
---|
875 | bool_t |
---|
876 | xdr_hyper(XDR *xdrs, longlong_t *llp) |
---|
877 | { |
---|
878 | |
---|
879 | /* |
---|
880 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
881 | * call xdr_int64_t(). |
---|
882 | */ |
---|
883 | return (xdr_int64_t(xdrs, (int64_t *)llp)); |
---|
884 | } |
---|
885 | |
---|
886 | |
---|
887 | /* |
---|
888 | * XDR unsigned hypers |
---|
889 | */ |
---|
890 | bool_t |
---|
891 | xdr_u_hyper(XDR *xdrs, u_longlong_t *ullp) |
---|
892 | { |
---|
893 | |
---|
894 | /* |
---|
895 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
896 | * call xdr_u_int64_t(). |
---|
897 | */ |
---|
898 | return (xdr_u_int64_t(xdrs, (u_int64_t *)ullp)); |
---|
899 | } |
---|
900 | |
---|
901 | |
---|
902 | /* |
---|
903 | * XDR longlong_t's |
---|
904 | */ |
---|
905 | bool_t |
---|
906 | xdr_longlong_t(XDR *xdrs, longlong_t *llp) |
---|
907 | { |
---|
908 | |
---|
909 | /* |
---|
910 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
911 | * call xdr_int64_t(). |
---|
912 | */ |
---|
913 | return (xdr_int64_t(xdrs, (int64_t *)llp)); |
---|
914 | } |
---|
915 | |
---|
916 | |
---|
917 | /* |
---|
918 | * XDR u_longlong_t's |
---|
919 | */ |
---|
920 | bool_t |
---|
921 | xdr_u_longlong_t(XDR *xdrs, u_longlong_t *ullp) |
---|
922 | { |
---|
923 | |
---|
924 | /* |
---|
925 | * Don't bother open-coding this; it's a fair amount of code. Just |
---|
926 | * call xdr_u_int64_t(). |
---|
927 | */ |
---|
928 | return (xdr_u_int64_t(xdrs, (u_int64_t *)ullp)); |
---|
929 | } |
---|