4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
24 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
28 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
31 * Portions of this source code were derived from Berkeley
32 * 4.3 BSD under license from the Regents of the University of
37 * Generic XDR routines impelmentation.
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.
43 #include <sys/types.h>
47 #include <rpc/types.h>
51 #define LASTUNSIGNED ((uint_t)0-1)
52 char mem_err_msg_ref
[] = "xdr_reference: out of memory";
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(XDR
*xdrs
, caddr_t
*pp
, uint_t size
, const xdrproc_t proc
)
69 /* Make sure x_op contains a valid value */
70 if (xdrs
->x_op
!= XDR_ENCODE
&&
71 xdrs
->x_op
!= XDR_DECODE
&&
72 xdrs
->x_op
!= XDR_FREE
)
80 *pp
= loc
= malloc(size
);
82 (void) syslog(LOG_ERR
, mem_err_msg_ref
);
85 (void) memset(loc
, 0, (int)size
);
89 stat
= (*proc
)(xdrs
, loc
, LASTUNSIGNED
);
91 if (xdrs
->x_op
== XDR_FREE
) {
102 * XDR a pointer to a possibly recursive data structure. This
103 * differs with xdr_reference in that it can serialize/deserialiaze
106 * What's sent is actually a union:
108 * union object_pointer switch (boolean b) {
109 * case TRUE: object_data data;
110 * case FALSE: void nothing;
113 * > objpp: Pointer to the pointer to the object.
114 * > obj_size: size of the object.
115 * > xdr_obj: routine to XDR an object.
119 xdr_pointer(XDR
*xdrs
, char **objpp
, uint_t obj_size
, const xdrproc_t xdr_obj
)
123 more_data
= (*objpp
!= NULL
);
124 if (!xdr_bool(xdrs
, &more_data
))
130 return (xdr_reference(xdrs
, objpp
, obj_size
, xdr_obj
));