1 /* @(#)xdr_reference.c 2.1 88/07/29 4.0 RPCSRC */
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
28 * Mountain View, California 94043
31 static char sccsid[] = "@(#)xdr_reference.c 1.11 87/08/11 SMI";
35 * xdr_reference.c, Generic XDR routines implementation.
37 * Copyright (C) 1987, Sun Microsystems, Inc.
39 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
40 * "pointers". See xdr.h for more info on the interface to xdr.
48 #include <rpc/types.h>
53 # include <libio/iolibio.h>
54 # define fputs(s, f) _IO_fputs (s, f)
58 #define LASTUNSIGNED ((u_int)0-1)
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 size of 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)
82 *pp = loc = (caddr_t) mem_alloc (size);
86 if (_IO_fwide (stderr, 0) > 0)
87 (void) fwprintf (stderr, L"%s",
88 _("xdr_reference: out of memory\n"));
91 (void) fputs (_("xdr_reference: out of memory\n"), stderr);
94 memset (loc, 0, (int) size);
100 stat = (*proc) (xdrs, loc, LASTUNSIGNED);
102 if (xdrs->x_op == XDR_FREE)
104 mem_free (loc, size);
109 libc_hidden_def(xdr_reference)
114 * XDR a pointer to a possibly recursive data structure. This
115 * differs with xdr_reference in that it can serialize/deserialize
118 * What's sent is actually a union:
120 * union object_pointer switch (boolean b) {
121 * case TRUE: object_data data;
122 * case FALSE: void nothing;
125 * > objpp: Pointer to the pointer to the object.
126 * > obj_size: size of the object.
127 * > xdr_obj: routine to XDR an object.
131 xdr_pointer (XDR *xdrs, char **objpp, u_int obj_size, xdrproc_t xdr_obj)
136 more_data = (*objpp != NULL);
137 if (!xdr_bool (xdrs, &more_data))
146 return xdr_reference (xdrs, objpp, obj_size, xdr_obj);