1 /* $NetBSD: xdr_array.c,v 1.12 2000/01/22 22:19:18 mycroft Exp $ */
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34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char *sccsid2 = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";
36 static char *sccsid = "@(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC";
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
42 * xdr_array.c, Generic XDR routines impelmentation.
44 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
45 * arrays. See xdr.h for more info on the interface to xdr.
48 #include "namespace.h"
55 #include <rpc/types.h>
57 #include "un-namespace.h"
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 (!xdr_u_int(xdrs, sizep)) {
86 if ((c > maxsize || UINT_MAX/elsize < c) &&
87 (xdrs->x_op != XDR_FREE)) {
90 nodesize = c * elsize;
93 * if we are deserializing, we may need to allocate an array.
94 * We also save time by checking for a null array if we are freeing.
101 *addrp = target = mem_alloc(nodesize);
102 if (target == NULL) {
103 warnx("xdr_array: out of memory");
106 memset(target, 0, nodesize);
117 * now we xdr each element of array
119 for (i = 0; (i < c) && stat; i++) {
120 stat = (*elproc)(xdrs, target);
125 * the array may need freeing
127 if (xdrs->x_op == XDR_FREE) {
128 mem_free(*addrp, nodesize);
137 * XDR a fixed length array. Unlike variable-length arrays,
138 * the storage of fixed length arrays is static and unfreeable.
139 * > basep: base of the array
140 * > size: size of the array
141 * > elemsize: size of each element
142 * > xdr_elem: routine to XDR each element
145 xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem)
156 for (i = 0; i < nelem; i++) {
157 if (!(*xdr_elem)(xdrs, elptr)) {