143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
static char sccsid[] = "@(#)22 1.1 src/bos/usr/ccs/lib/libc/xdr_reference.c, libcrpc, bos411, 9428A410j 10/25/93 20:54:35";
|
|
/*
|
|
* COMPONENT_NAME: LIBCRPC
|
|
*
|
|
* FUNCTIONS: xdr_pointer
|
|
* xdr_reference
|
|
*
|
|
*
|
|
* ORIGINS: 24,27
|
|
*
|
|
* This module contains IBM CONFIDENTIAL code. -- (IBM
|
|
* Confidential Restricted when combined with the aggregated
|
|
* modules for this product)
|
|
* SOURCE MATERIALS
|
|
*
|
|
* (C) COPYRIGHT International Business Machines Corp. 1989,1993
|
|
* All Rights Reserved
|
|
* US Government Users Restricted Rights - Use, duplication or
|
|
* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
|
|
*/
|
|
|
|
|
|
/*
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)xdr_reference.c 1.5 90/07/19 4.1NFSSRC Copyr 1990 Sun Micro";
|
|
#endif
|
|
*
|
|
* Copyright (c) 1988 by Sun Microsystems, Inc.
|
|
* 1.12 88/02/08
|
|
*/
|
|
|
|
|
|
/*
|
|
* xdr_reference.c, Generic XDR routines impelmentation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/param.h>
|
|
#include <rpc/types.h>
|
|
#include <rpc/xdr.h>
|
|
#else
|
|
#include <sys/syslog.h>
|
|
#include <stdio.h>
|
|
#include <rpc/types.h>
|
|
#include <rpc/xdr.h>
|
|
#include <libc_msg.h>
|
|
#endif
|
|
|
|
#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.
|
|
*/
|
|
bool_t
|
|
xdr_reference(xdrs, pp, size, proc)
|
|
register XDR *xdrs;
|
|
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;
|
|
register bool_t stat;
|
|
|
|
if (loc == NULL)
|
|
switch (xdrs->x_op) {
|
|
case XDR_FREE:
|
|
return (TRUE);
|
|
|
|
case XDR_DECODE:
|
|
*pp = loc = (caddr_t) mem_alloc(size);
|
|
if (loc == NULL) {
|
|
#ifndef _KERNEL
|
|
(void) syslog(LOG_ERR,
|
|
(char *)oncmsg(LIBCRPC,RPC97,
|
|
"xdr_reference: out of memory"));
|
|
#endif
|
|
return (FALSE);
|
|
}
|
|
bzero(loc, size);
|
|
break;
|
|
}
|
|
|
|
stat = (*proc)(xdrs, loc, LASTUNSIGNED);
|
|
|
|
if (xdrs->x_op == XDR_FREE) {
|
|
mem_free(loc, size);
|
|
*pp = NULL;
|
|
}
|
|
return (stat);
|
|
}
|
|
|
|
|
|
#ifndef _KERNEL
|
|
/*
|
|
* xdr_pointer():
|
|
*
|
|
* XDR a pointer to a possibly recursive data structure. This
|
|
* differs with xdr_reference in that it can serialize/deserialiaze
|
|
* trees correctly.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
bool_t
|
|
xdr_pointer(xdrs,objpp,obj_size,xdr_obj)
|
|
register XDR *xdrs;
|
|
char **objpp;
|
|
u_int obj_size;
|
|
xdrproc_t xdr_obj;
|
|
{
|
|
|
|
bool_t more_data;
|
|
|
|
more_data = (*objpp != NULL);
|
|
if (! xdr_bool(xdrs,&more_data)) {
|
|
return (FALSE);
|
|
}
|
|
if (! more_data) {
|
|
*objpp = NULL;
|
|
return (TRUE);
|
|
}
|
|
return (xdr_reference(xdrs,objpp,obj_size,xdr_obj));
|
|
}
|
|
#endif /* ! _KERNEL */
|