1/* 2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights 7 * Reserved. This file contains Original Code and/or Modifications of 8 * Original Code as defined in and that are subject to the Apple Public 9 * Source License Version 1.1 (the "License"). You may not use this file 10 * except in compliance with the License. Please obtain a copy of the 11 * License at http://www.apple.com/publicsource and read it before using 12 * this file. 13 * 14 * The Original Code and all software distributed under the License are 15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the 19 * License for the specific language governing rights and limitations 20 * under the License. 21 * 22 * @APPLE_LICENSE_HEADER_END@ 23 */ 24 25/* 26 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 27 * unrestricted use provided that this legend is included on all tape 28 * media and as a part of the software program in whole or part. Users 29 * may copy or modify Sun RPC without charge, but are not authorized 30 * to license or distribute it to anyone else except as part of a product or 31 * program developed by the user. 32 * 33 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 34 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 35 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 36 * 37 * Sun RPC is provided with no support and without any obligation on the 38 * part of Sun Microsystems, Inc. to assist in its use, correction, 39 * modification or enhancement. 40 * 41 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 42 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 43 * OR ANY PART THEREOF. 44 * 45 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 46 * or profits or other special, indirect and consequential damages, even if 47 * Sun has been advised of the possibility of such damages. 48 * 49 * Sun Microsystems, Inc. 50 * 2550 Garcia Avenue 51 * Mountain View, California 94043 52 */ 53/* 54 * xdr_sizeof.c 55 * 56 * Copyright 1990 Sun Microsystems, Inc. 57 * 58 * General purpose routine to see how much space something will use 59 * when serialized using XDR. 60 */ 61 62#include <sys/cdefs.h> 63 64#include <rpc/types.h> 65#include <rpc/xdr.h> 66#include <sys/types.h> 67#include <stdlib.h> 68 69/* ARGSUSED */ 70static bool_t 71x_putlong(xdrs, longp) 72 XDR *xdrs; 73#ifdef __LP64__ 74 int *longp; 75#else 76 long *longp; 77#endif 78{ 79 xdrs->x_handy += BYTES_PER_XDR_UNIT; 80 return (TRUE); 81} 82 83/* ARGSUSED */ 84static bool_t 85x_putbytes(xdrs, bp, len) 86 XDR *xdrs; 87 char *bp; 88 u_int len; 89{ 90 xdrs->x_handy += len; 91 return (TRUE); 92} 93 94static u_int 95x_getpostn(xdrs) 96 XDR *xdrs; 97{ 98 return (xdrs->x_handy); 99} 100 101/* ARGSUSED */ 102static bool_t 103x_setpostn(xdrs, pos) 104 XDR *xdrs; 105 u_int pos; 106{ 107 /* This is not allowed */ 108 return (FALSE); 109} 110 111static int32_t * 112x_inline(xdrs, len) 113 XDR *xdrs; 114 u_int len; 115{ 116 size_t llen; 117 118 if (len == 0) { 119 return (NULL); 120 } 121 if (xdrs->x_op != XDR_ENCODE) { 122 return (NULL); 123 } 124 125 llen = len; 126 127 if (llen < (size_t)xdrs->x_base) { 128 /* x_private was already allocated */ 129 xdrs->x_handy += llen; 130 return ((int32_t *) xdrs->x_private); 131 } else { 132 /* Free the earlier space and allocate new area */ 133 if (xdrs->x_private) 134 free(xdrs->x_private); 135 if ((xdrs->x_private = (caddr_t) malloc(len)) == NULL) { 136 xdrs->x_base = 0; 137 return (NULL); 138 } 139 xdrs->x_base = (caddr_t)llen; 140 xdrs->x_handy += llen; 141 return ((int32_t *) xdrs->x_private); 142 } 143} 144 145static int 146harmless() 147{ 148 /* Always return FALSE/NULL, as the case may be */ 149 return (0); 150} 151 152static void 153x_destroy(xdrs) 154 XDR *xdrs; 155{ 156 xdrs->x_handy = 0; 157 xdrs->x_base = 0; 158 if (xdrs->x_private) { 159 free(xdrs->x_private); 160 xdrs->x_private = NULL; 161 } 162 return; 163} 164 165#ifdef __LP64__ 166unsigned int 167#else 168unsigned long 169#endif 170xdr_sizeof(func, data) 171 xdrproc_t func; 172 void *data; 173{ 174 XDR x; 175 struct xdr_ops ops; 176 bool_t stat; 177 /* to stop ANSI-C compiler from complaining */ 178#ifdef __LP64__ 179 typedef bool_t (* dummyfunc1)(XDR *, int *); 180#else 181 typedef bool_t (* dummyfunc1)(XDR *, long *); 182#endif 183 typedef bool_t (* dummyfunc2)(XDR *, caddr_t, u_int); 184 185 ops.x_putlong = x_putlong; 186 ops.x_putbytes = x_putbytes; 187 ops.x_inline = x_inline; 188 ops.x_getpostn = x_getpostn; 189 ops.x_setpostn = x_setpostn; 190 ops.x_destroy = x_destroy; 191 192 /* the other harmless ones */ 193 ops.x_getlong = (dummyfunc1) harmless; 194 ops.x_getbytes = (dummyfunc2) harmless; 195 196 x.x_op = XDR_ENCODE; 197 x.x_ops = &ops; 198 x.x_handy = 0; 199 x.x_private = (caddr_t) NULL; 200 x.x_base = (caddr_t) 0; 201 202 stat = func(&x, data, 0); 203 if (x.x_private) 204 free(x.x_private); 205 return (stat == TRUE ? (unsigned) x.x_handy: 0); 206} 207