xref: /freebsd/sys/cddl/compat/opensolaris/rpc/xdr.h (revision d8a0fe102c0cfdfcd5b818f850eff09d8536c9bc)
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  */
45 static __inline bool_t
46 xdrmem_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