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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.
46 #include <rpc/types.h>
49 #if defined(__FreeBSD__) || defined(__NetBSD__)
50 #include <libc_private.h>
54 * XDR an indirect pointer
55 * xdr_reference is for recursively translating a structure that is
56 * referenced by a pointer inside the structure that is currently being
57 * translated. pp references a pointer to storage. If *pp is null
58 * the necessary storage is allocated.
59 * size is the sizeof the referneced structure.
60 * proc is the routine to handle the referenced structure.
63 xdr_reference(xdrs, pp, size, proc)
65 caddr_t *pp; /* the pointer to work on */
66 u_int size; /* size of the object pointed to */
67 xdrproc_t proc; /* xdr routine to handle the object */
78 *pp = loc = (caddr_t) mem_alloc(size);
80 warnx("xdr_reference: out of memory");
90 stat = (*proc)(xdrs, loc);
92 if (xdrs->x_op == XDR_FREE) {
103 * XDR a pointer to a possibly recursive data structure. This
104 * differs with xdr_reference in that it can serialize/deserialiaze
107 * What's sent is actually a union:
109 * union object_pointer switch (boolean b) {
110 * case TRUE: object_data data;
111 * case FALSE: void nothing;
114 * > objpp: Pointer to the pointer to the object.
115 * > obj_size: size of the object.
116 * > xdr_obj: routine to XDR an object.
120 xdr_pointer(xdrs,objpp,obj_size,xdr_obj)
129 more_data = (*objpp != NULL);
130 if (! xdr_bool(xdrs,&more_data)) {
137 return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));