1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
30#ifndef	_OPENSOLARIS_RPC_XDR_H_
31#define	_OPENSOLARIS_RPC_XDR_H_
32
33#include_next <rpc/xdr.h>
34
35#ifndef _KERNEL
36
37#include <assert.h>
38
39/*
40 * Taken from sys/xdr/xdr_mem.c.
41 *
42 * FreeBSD's userland XDR doesn't implement control method (only the kernel),
43 * but OpenSolaris nvpair still depend on it, so we have to implement it here.
44 */
45static __inline bool_t
46xdrmem_control(XDR *xdrs, int request, void *info)
47{
48	xdr_bytesrec *xptr;
49
50	switch (request) {
51	case XDR_GET_BYTES_AVAIL:
52		xptr = (xdr_bytesrec *)info;
53		xptr->xc_is_last_record = TRUE;
54		xptr->xc_num_avail = xdrs->x_handy;
55		return (TRUE);
56	default:
57		assert(!"unexpected request");
58	}
59	return (FALSE);
60}
61
62#undef XDR_CONTROL
63#define	XDR_CONTROL(xdrs, req, op)					\
64	(((xdrs)->x_ops->x_control == NULL) ?				\
65	    xdrmem_control((xdrs), (req), (op)) :			\
66	    (*(xdrs)->x_ops->x_control)(xdrs, req, op))
67
68#endif	/* !_KERNEL */
69
70#endif	/* !_OPENSOLARIS_RPC_XDR_H_ */
71