164 lines
3.8 KiB
C
164 lines
3.8 KiB
C
static char sccsid[] = "@(#)16 1.7 src/bos/usr/ccs/lib/libc/xdr_array.c, libcrpc, bos411, 9428A410j 10/25/93 20:43:33";
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/*
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* COMPONENT_NAME: LIBCRPC
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*
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* FUNCTIONS: xdr_array
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* xdr_vector
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*
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*
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* ORIGINS: 24,27
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*
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* This module contains IBM CONFIDENTIAL code. -- (IBM
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* Confidential Restricted when combined with the aggregated
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* modules for this product)
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* SOURCE MATERIALS
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*
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* (C) COPYRIGHT International Business Machines Corp. 1989,1993
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* All Rights Reserved
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* US Government Users Restricted Rights - Use, duplication or
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* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
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*/
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/*
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)xdr_array.c 1.5 90/07/19 4.1NFSSRC Copyr 1990 Sun Micro";
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#endif
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*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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* 1.11 88/02/08
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*/
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/*
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* xdr_array.c, Generic XDR routines impelmentation.
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*
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* These are the "non-trivial" xdr primitives used to serialize and de-serialize
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* arrays. See xdr.h for more info on the interface to xdr.
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*/
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#else
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#include <sys/syslog.h>
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#include <stdio.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <libc_msg.h>
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#endif
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#define LASTUNSIGNED ((u_int)0-1)
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/*
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* XDR an array of arbitrary elements
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* *addrp is a pointer to the array, *sizep is the number of elements.
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* If addrp is NULL (*sizep * elsize) bytes are allocated.
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* elsize is the size (in bytes) of each element, and elproc is the
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* xdr procedure to call to handle each element of the array.
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*/
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bool_t
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xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc)
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register XDR *xdrs;
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caddr_t *addrp; /* array pointer */
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u_int *sizep; /* number of elements */
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u_int maxsize; /* max numberof elements */
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u_int elsize; /* size in bytes of each element */
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xdrproc_t elproc; /* xdr routine to handle each element */
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{
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register u_int i;
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register caddr_t target = *addrp;
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register u_int c; /* the actual element count */
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register bool_t stat = TRUE;
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register u_int nodesize;
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/* like strings, arrays are really counted arrays */
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if (! xdr_u_int(xdrs, sizep)) {
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return (FALSE);
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}
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c = *sizep;
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if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) {
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return (FALSE);
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}
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nodesize = c * elsize;
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/*
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* if we are deserializing, we may need to allocate an array.
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* We also save time by checking for a null array if we are freeing.
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*/
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if (target == NULL)
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switch (xdrs->x_op) {
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case XDR_DECODE:
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if (c == 0)
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return (TRUE);
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*addrp = target = mem_alloc(nodesize);
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if (target == NULL) {
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#ifndef _KERNEL
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(void) syslog(LOG_ERR,
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(char *)oncmsg(LIBCRPC,RPC96,
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"xdr_array: out of memory"));
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#endif
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return (FALSE);
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}
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bzero(target, nodesize);
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break;
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case XDR_FREE:
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return (TRUE);
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}
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/*
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* now we xdr each element of array
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*/
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for (i = 0; (i < c) && stat; i++) {
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stat = (*elproc)(xdrs, target, LASTUNSIGNED);
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target += elsize;
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}
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/*
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* the array may need freeing
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*/
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if (xdrs->x_op == XDR_FREE) {
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mem_free(*addrp, nodesize);
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*addrp = NULL;
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}
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return (stat);
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}
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#ifndef _KERNEL
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/*
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* xdr_vector():
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*
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* XDR a fixed length array. Unlike variable-length arrays,
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* the storage of fixed length arrays is static and unfreeable.
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* > basep: base of the array
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* > size: size of the array
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* > elemsize: size of each element
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* > xdr_elem: routine to XDR each element
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*/
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bool_t
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xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem)
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register XDR *xdrs;
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register char *basep;
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register u_int nelem;
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register u_int elemsize;
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register xdrproc_t xdr_elem;
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{
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register u_int i;
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register char *elptr;
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elptr = basep;
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for (i = 0; i < nelem; i++) {
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if (! (*xdr_elem)(xdrs, elptr, LASTUNSIGNED)) {
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return(FALSE);
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}
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elptr += elemsize;
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}
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return(TRUE);
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}
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#endif /* !_KERNEL */
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