2 * xdr_reference.c, Generic XDR routines implementation.
4 * Copyright (c) 2010, Oracle America, Inc.
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23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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33 * These are the "non-trivial" xdr primitives used to serialize and
34 * de-serialize "pointers". See xdr.h for more info on the interface to xdr.
39 #include <rpc/types.h>
43 #include <libio/iolibio.h>
45 #define LASTUNSIGNED ((u_int)0-1)
48 * XDR an indirect pointer
49 * xdr_reference is for recursively translating a structure that is
50 * referenced by a pointer inside the structure that is currently being
51 * translated. pp references a pointer to storage. If *pp is null
52 * the necessary storage is allocated.
53 * size is the size of the referneced structure.
54 * proc is the routine to handle the referenced structure.
57 xdr_reference (xdrs, pp, size, proc)
59 caddr_t *pp; /* the pointer to work on */
60 u_int size; /* size of the object pointed to */
61 xdrproc_t proc; /* xdr routine to handle the object */
73 *pp = loc = (caddr_t) calloc (1, size);
76 (void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
84 stat = (*proc) (xdrs, loc, LASTUNSIGNED);
86 if (xdrs->x_op == XDR_FREE)
93 libc_hidden_nolink_sunrpc (xdr_reference, GLIBC_2_0)
99 * XDR a pointer to a possibly recursive data structure. This
100 * differs with xdr_reference in that it can serialize/deserialize
103 * What's sent is actually a union:
105 * union object_pointer switch (boolean b) {
106 * case TRUE: object_data data;
107 * case FALSE: void nothing;
110 * > objpp: Pointer to the pointer to the object.
111 * > obj_size: size of the object.
112 * > xdr_obj: routine to XDR an object.
116 xdr_pointer (xdrs, objpp, obj_size, xdr_obj)
125 more_data = (*objpp != NULL);
126 if (!xdr_bool (xdrs, &more_data))
135 return xdr_reference (xdrs, objpp, obj_size, xdr_obj);
137 #ifdef EXPORT_RPC_SYMBOLS
138 libc_hidden_def (xdr_pointer)
140 libc_hidden_nolink_sunrpc (xdr_pointer, GLIBC_2_0)