xref: /freebsd/sys/contrib/openzfs/lib/libspl/include/rpc/xdr.h (revision d7d962ead0b6e5e8a39202d0590022082bf5bfb6)
1 /*
2  * CDDL HEADER START
3  *
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
7  * with the License.
8  *
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.
13  *
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]
19  *
20  * CDDL HEADER END
21  *
22  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  *
25  *	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
26  *	  All Rights Reserved
27  *
28  * Portions of this source code were derived from Berkeley 4.3 BSD
29  * under license from the Regents of the University of California.
30  */
31 
32 #ifndef LIBSPL_RPC_XDR_H
33 #define	LIBSPL_RPC_XDR_H
34 
35 #include_next <rpc/xdr.h>
36 
37 #ifdef xdr_control /* if e.g. using tirpc */
38 #undef xdr_control
39 #endif
40 
41 #define	XDR_GET_BYTES_AVAIL 1
42 
43 #ifndef HAVE_XDR_BYTESREC
44 struct xdr_bytesrec {
45 	bool_t xc_is_last_record;
46 	size_t xc_num_avail;
47 };
48 #endif
49 typedef struct xdr_bytesrec  xdr_bytesrec_t;
50 
51 /*
52  * This functionality is not required and is disabled in user space.
53  */
54 static inline bool_t
55 xdr_control(XDR *xdrs, int request, void *info)
56 {
57 	xdr_bytesrec_t *xptr;
58 
59 	ASSERT3U(request, ==, XDR_GET_BYTES_AVAIL);
60 
61 	xptr = (xdr_bytesrec_t *)info;
62 	xptr->xc_is_last_record = TRUE;
63 	xptr->xc_num_avail = xdrs->x_handy;
64 
65 	return (TRUE);
66 }
67 
68 #endif /* LIBSPL_RPC_XDR_H */
69