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29 #include <sys/cdefs.h>
30 #include <sys/cdefs.h>
33 * xdr_reference.c, Generic XDR routines impelmentation.
35 * Copyright (C) 1987, Sun Microsystems, Inc.
37 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
38 * "pointers". See xdr.h for more info on the interface to xdr.
41 #include "namespace.h"
47 #include <rpc/types.h>
50 #if defined(__FreeBSD__) || defined(__NetBSD__)
51 #include <libc_private.h>
55 * XDR an indirect pointer
56 * xdr_reference is for recursively translating a structure that is
57 * referenced by a pointer inside the structure that is currently being
58 * translated. pp references a pointer to storage. If *pp is null
59 * the necessary storage is allocated.
60 * size is the sizeof the referneced structure.
61 * proc is the routine to handle the referenced structure.
64 xdr_reference(xdrs, pp, size, proc)
66 caddr_t *pp; /* the pointer to work on */
67 u_int size; /* size of the object pointed to */
68 xdrproc_t proc; /* xdr routine to handle the object */
79 *pp = loc = (caddr_t) mem_alloc(size);
81 warnx("xdr_reference: out of memory");
91 stat = (*proc)(xdrs, loc);
93 if (xdrs->x_op == XDR_FREE) {
104 * XDR a pointer to a possibly recursive data structure. This
105 * differs with xdr_reference in that it can serialize/deserialiaze
108 * What's sent is actually a union:
110 * union object_pointer switch (boolean b) {
111 * case TRUE: object_data data;
112 * case FALSE: void nothing;
115 * > objpp: Pointer to the pointer to the object.
116 * > obj_size: size of the object.
117 * > xdr_obj: routine to XDR an object.
121 xdr_pointer(xdrs,objpp,obj_size,xdr_obj)
130 more_data = (*objpp != NULL);
131 if (! xdr_bool(xdrs,&more_data)) {
138 return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));