1 /* $NetBSD: xdr_reference.c,v 1.13 2000/01/22 22:19:18 mycroft Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (c) 2010, Oracle America, Inc.
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36 #if defined(LIBC_SCCS) && !defined(lint)
37 static char *sccsid2 = "@(#)xdr_reference.c 1.11 87/08/11 SMI";
38 static char *sccsid = "@(#)xdr_reference.c 2.1 88/07/29 4.0 RPCSRC";
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
44 * xdr_reference.c, Generic XDR routines implementation.
46 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
47 * "pointers". See xdr.h for more info on the interface to xdr.
50 #include "namespace.h"
56 #include <rpc/types.h>
58 #include "libc_private.h"
61 * XDR an indirect pointer
62 * xdr_reference is for recursively translating a structure that is
63 * referenced by a pointer inside the structure that is currently being
64 * translated. pp references a pointer to storage. If *pp is null
65 * the necessary storage is allocated.
66 * size is the sizeof the referneced structure.
67 * proc is the routine to handle the referenced structure.
70 xdr_reference(XDR *xdrs, caddr_t *pp, u_int size, xdrproc_t 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
87 *pp = loc = (caddr_t) mem_alloc(size);
89 warnx("xdr_reference: out of memory");
99 stat = (*proc)(xdrs, loc);
101 if (xdrs->x_op == XDR_FREE) {
112 * XDR a pointer to a possibly recursive data structure. This
113 * differs with xdr_reference in that it can serialize/deserialiaze
116 * What's sent is actually a union:
118 * union object_pointer switch (boolean b) {
119 * case TRUE: object_data data;
120 * case FALSE: void nothing;
123 * > objpp: Pointer to the pointer to the object.
124 * > obj_size: size of the object.
125 * > xdr_obj: routine to XDR an object.
129 xdr_pointer(XDR *xdrs, char **objpp, u_int obj_size, xdrproc_t xdr_obj)
134 more_data = (*objpp != NULL);
135 if (! xdr_bool(xdrs,&more_data)) {
142 return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));