* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
* Mountain View, California 94043
#if defined(LIBC_SCCS) && !defined(lint)
/*static char *sccsid = "from: @(#)xdr_reference.c 1.11 87/08/11 SMI";*/
/*static char *sccsid = "from: @(#)xdr_reference.c 2.1 88/07/29 4.0 RPCSRC";*/
static char *rcsid
= "$Id: xdr_reference.c,v 1.3 1993/08/26 00:53:53 jtc Exp $";
* xdr_reference.c, Generic XDR routines impelmentation.
* Copyright (C) 1987, Sun Microsystems, Inc.
* These are the "non-trivial" xdr primitives used to serialize and de-serialize
* "pointers". See xdr.h for more info on the interface to xdr.
#define LASTUNSIGNED ((u_int)0-1)
* XDR an indirect pointer
* xdr_reference is for recursively translating a structure that is
* referenced by a pointer inside the structure that is currently being
* translated. pp references a pointer to storage. If *pp is null
* the necessary storage is allocated.
* size is the sizeof the referneced structure.
* proc is the routine to handle the referenced structure.
xdr_reference(xdrs
, pp
, size
, proc
)
caddr_t
*pp
; /* the pointer to work on */
u_int size
; /* size of the object pointed to */
xdrproc_t proc
; /* xdr routine to handle the object */
register caddr_t loc
= *pp
;
*pp
= loc
= (caddr_t
) mem_alloc(size
);
"xdr_reference: out of memory\n");
stat
= (*proc
)(xdrs
, loc
, LASTUNSIGNED
);
if (xdrs
->x_op
== XDR_FREE
) {
* XDR a pointer to a possibly recursive data structure. This
* differs with xdr_reference in that it can serialize/deserialiaze
* What's sent is actually a union:
* union object_pointer switch (boolean b) {
* case TRUE: object_data data;
* case FALSE: void nothing;
* > objpp: Pointer to the pointer to the object.
* > obj_size: size of the object.
* > xdr_obj: routine to XDR an object.
xdr_pointer(xdrs
,objpp
,obj_size
,xdr_obj
)
more_data
= (*objpp
!= NULL
);
if (! xdr_bool(xdrs
,&more_data
)) {
return (xdr_reference(xdrs
,objpp
,obj_size
,xdr_obj
));