2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 #include <afsconfig.h>
30 #include <afs/param.h>
37 * xdr_array.c, Generic XDR routines impelmentation.
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.
46 #include <sys/param.h>
47 #ifdef AFS_LINUX20_ENV
48 #include "../h/string.h"
50 #define bzero(A,C) memset((A), 0, (C))
53 #include <sys/systm.h>
54 #endif /* AFS_LINUX20_ENV */
64 #define LASTUNSIGNED ((u_int)0-1)
68 * XDR an array of arbitrary elements
69 * *addrp is a pointer to the array, *sizep is the number of elements.
70 * If addrp is NULL (*sizep * elsize) bytes are allocated.
71 * elsize is the size (in bytes) of each element, and elproc is the
72 * xdr procedure to call to handle each element of the array.
75 xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc)
77 caddr_t *addrp; /* array pointer */
78 u_int *sizep; /* number of elements */
79 u_int maxsize; /* max numberof elements */
80 u_int elsize; /* size in bytes of each element */
81 xdrproc_t elproc; /* xdr routine to handle each element */
84 register caddr_t target = *addrp;
85 register u_int c; /* the actual element count */
86 register bool_t stat = TRUE;
87 register u_int nodesize;
89 i = ((~0) >> 1) / elsize;
90 if (maxsize > i) maxsize = i;
92 /* like strings, arrays are really counted arrays */
93 if (! xdr_u_int(xdrs, sizep)) {
97 if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) {
100 nodesize = c * elsize;
103 * if we are deserializing, we may need to allocate an array.
104 * We also save time by checking for a null array if we are freeing.
107 switch (xdrs->x_op) {
111 *addrp = target = osi_alloc(nodesize);
112 if (target == NULL) {
115 memset(target, 0, (u_int)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 osi_free(*addrp, nodesize);