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_reference.c 2.1 88/07/29 4.0 RPCSRC */
14 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
15 * unrestricted use provided that this legend is included on all tape
16 * media and as a part of the software program in whole or part. Users
17 * may copy or modify Sun RPC without charge, but are not authorized
18 * to license or distribute it to anyone else except as part of a product or
19 * program developed by the user.
21 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
22 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
25 * Sun RPC is provided with no support and without any obligation on the
26 * part of Sun Microsystems, Inc. to assist in its use, correction,
27 * modification or enhancement.
29 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
30 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
31 * OR ANY PART THEREOF.
33 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
34 * or profits or other special, indirect and consequential damages, even if
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37 * Sun Microsystems, Inc.
39 * Mountain View, California 94043
41 #if !defined(lint) && defined(SCCSIDS)
42 static char sccsid[] = "@(#)xdr_reference.c 1.11 87/08/11 SMI";
46 * xdr_reference.c, Generic XDR routines impelmentation.
48 * Copyright (C) 1987, Sun Microsystems, Inc.
50 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
51 * "pointers". See xdr.h for more info on the interface to xdr.
56 #include <rpc/types.h>
59 #define LASTUNSIGNED ((u_int)0-1)
62 * XDR an indirect pointer
63 * xdr_reference is for recursively translating a structure that is
64 * referenced by a pointer inside the structure that is currently being
65 * translated. pp references a pointer to storage. If *pp is null
66 * the necessary storage is allocated.
67 * size is the sizeof the referneced structure.
68 * proc is the routine to handle the referenced structure.
71 xdr_reference(xdrs, pp, size, proc)
73 caddr_t *pp; /* the pointer to work on */
74 u_int size; /* size of the object pointed to */
75 xdrproc_t proc; /* xdr routine to handle the object */
77 register caddr_t loc = *pp;
86 *pp = loc = (caddr_t) mem_alloc(size);
91 (void) fprintf(stderr,
93 "xdr_reference: out of memory\n");
96 bzero(loc, (int)size);
100 stat = (*proc)(xdrs, loc, LASTUNSIGNED);
102 if (xdrs->x_op == XDR_FREE) {
113 * XDR a pointer to a possibly recursive data structure. This
114 * differs with xdr_reference in that it can serialize/deserialiaze
117 * What's sent is actually a union:
119 * union object_pointer switch (boolean b) {
120 * case TRUE: object_data data;
121 * case FALSE: void nothing;
124 * > objpp: Pointer to the pointer to the object.
125 * > obj_size: size of the object.
126 * > xdr_obj: routine to XDR an object.
130 xdr_pointer(xdrs,objpp,obj_size,xdr_obj)
139 more_data = (*objpp != NULL);
140 if (! xdr_bool(xdrs,&more_data)) {
147 return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));