1 /*********************************************************************
2 * RPC for the Windows NT Operating System
3 * 1993 by Martin F. Gergeleit
4 * Users may use, copy or modify Sun RPC for the Windows NT Operating
5 * System according to the Sun copyright below.
7 * RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO
8 * WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE
9 * USE OF. USE ENTIRELY AT YOUR OWN RISK!!!
10 *********************************************************************/
12 /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */
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41 #if !defined(lint) && defined(SCCSIDS)
42 static char sccsid[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";
46 * xdr_array.c, Generic XDR routines impelmentation.
48 * Copyright (C) 1984, Sun Microsystems, Inc.
50 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
51 * arrays. See xdr.h for more info on the interface to xdr.
57 #include <rpc/types.h>
60 #define LASTUNSIGNED ((u_int)0-1)
64 * XDR an array of arbitrary elements
65 * *addrp is a pointer to the array, *sizep is the number of elements.
66 * If addrp is NULL (*sizep * elsize) bytes are allocated.
67 * elsize is the size (in bytes) of each element, and elproc is the
68 * xdr procedure to call to handle each element of the array.
71 xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc)
73 caddr_t *addrp; /* array pointer */
74 u_int *sizep; /* number of elements */
75 u_int maxsize; /* max numberof elements */
76 u_int elsize; /* size in bytes of each element */
77 xdrproc_t elproc; /* xdr routine to handle each element */
80 register caddr_t target = *addrp;
81 register u_int c; /* the actual element count */
82 register bool_t stat = TRUE;
83 register u_int nodesize;
85 /* like strings, arrays are really counted arrays */
86 if (! xdr_u_int(xdrs, sizep)) {
90 if ((c > maxsize || c > LASTUNSIGNED / elsize) &&
91 (xdrs->x_op != XDR_FREE)) {
94 nodesize = c * elsize;
97 * if we are deserializing, we may need to allocate an array.
98 * We also save time by checking for a null array if we are freeing.
101 switch (xdrs->x_op) {
105 *addrp = target = mem_alloc(nodesize);
106 if (target == NULL) {
110 (void) fprintf(stderr,
112 "xdr_array: out of memory\n");
115 bzero(target, nodesize);
123 * now we xdr each element of array
125 for (i = 0; (i < c) && stat; i++) {
126 stat = (*elproc)(xdrs, target, LASTUNSIGNED);
131 * the array may need freeing
133 if (xdrs->x_op == XDR_FREE) {
134 mem_free(*addrp, nodesize);
143 * XDR a fixed length array. Unlike variable-length arrays,
144 * the storage of fixed length arrays is static and unfreeable.
145 * > basep: base of the array
146 * > size: size of the array
147 * > elemsize: size of each element
148 * > xdr_elem: routine to XDR each element
151 xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem)
153 register char *basep;
154 register u_int nelem;
155 register u_int elemsize;
156 register xdrproc_t xdr_elem;
159 register char *elptr;
162 for (i = 0; i < nelem; i++) {
163 if (! (*xdr_elem)(xdrs, elptr, LASTUNSIGNED)) {