1 # define INTUSE(name) name
3 /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */
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32 #if !defined(lint) && defined(SCCSIDS)
33 static char sccsid[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";
37 * xdr_array.c, Generic XDR routines implementation.
39 * Copyright (C) 1984, Sun Microsystems, Inc.
41 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
42 * arrays. See xdr.h for more info on the interface to xdr.
56 #define LASTUNSIGNED ((u_int)0-1)
60 * XDR an array of arbitrary elements
61 * *addrp is a pointer to the array, *sizep is the number of elements.
62 * If addrp is NULL (*sizep * elsize) bytes are allocated.
63 * elsize is the size (in bytes) of each element, and elproc is the
64 * xdr procedure to call to handle each element of the array.
67 xdr_array (xdrs, addrp, sizep, maxsize, elsize, elproc)
69 caddr_t *addrp; /* array pointer */
70 u_int *sizep; /* number of elements */
71 u_int maxsize; /* max numberof elements */
72 u_int elsize; /* size in bytes of each element */
73 xdrproc_t elproc; /* xdr routine to handle each element */
76 caddr_t target = *addrp;
77 u_int c; /* the actual element count */
81 /* like strings, arrays are really counted arrays */
82 if (!INTUSE(xdr_u_int) (xdrs, sizep))
88 * XXX: Let the overflow possibly happen with XDR_FREE because mem_free()
89 * doesn't actually use its second argument anyway.
91 if ((c > maxsize || c > UINT_MAX / elsize) && (xdrs->x_op != XDR_FREE))
95 nodesize = c * elsize;
98 * if we are deserializing, we may need to allocate an array.
99 * We also save time by checking for a null array if we are freeing.
107 *addrp = target = mem_alloc (nodesize);
110 fprintf (stderr, "%s", "xdr_array: out of memory\n");
113 __bzero (target, nodesize);
123 * now we xdr each element of array
125 for (i = 0; (i < c) && stat; i++)
127 stat = (*elproc) (xdrs, target, LASTUNSIGNED);
132 * the array may need freeing
134 if (xdrs->x_op == XDR_FREE)
136 mem_free (*addrp, nodesize);
146 * XDR a fixed length array. Unlike variable-length arrays,
147 * the storage of fixed length arrays is static and unfreeable.
148 * > basep: base of the array
149 * > size: size of the array
150 * > elemsize: size of each element
151 * > xdr_elem: routine to XDR each element
154 xdr_vector (xdrs, basep, nelem, elemsize, xdr_elem)
165 for (i = 0; i < nelem; i++)
167 if (!(*xdr_elem) (xdrs, elptr, LASTUNSIGNED))