43fa6fe319
identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
754 lines
14 KiB
C
754 lines
14 KiB
C
/* $NetBSD: xdr.c,v 1.10 1997/07/21 14:08:43 jtc Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "@(#)xdr.c 1.35 87/08/12";
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static char *sccsid = "@(#)xdr.c 2.1 88/07/29 4.0 RPCSRC";
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#else
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__RCSID("$NetBSD: xdr.c,v 1.10 1997/07/21 14:08:43 jtc Exp $");
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#endif
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#endif
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/*
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* xdr.c, Generic XDR routines implementation.
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*
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*
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* These are the "generic" xdr routines used to serialize and de-serialize
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* most common data items. See xdr.h for more info on the interface to
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* xdr.
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*/
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#include "namespace.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#ifdef __weak_alias
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__weak_alias(xdr_bool,_xdr_bool);
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__weak_alias(xdr_bytes,_xdr_bytes);
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__weak_alias(xdr_char,_xdr_char);
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__weak_alias(xdr_enum,_xdr_enum);
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__weak_alias(xdr_free,_xdr_free);
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__weak_alias(xdr_int,_xdr_int);
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__weak_alias(xdr_int16_t,_xdr_int16_t);
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__weak_alias(xdr_int32_t,_xdr_int32_t);
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__weak_alias(xdr_long,_xdr_long);
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__weak_alias(xdr_netobj,_xdr_netobj);
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__weak_alias(xdr_opaque,_xdr_opaque);
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__weak_alias(xdr_short,_xdr_short);
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__weak_alias(xdr_string,_xdr_string);
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__weak_alias(xdr_u_char,_xdr_u_char);
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__weak_alias(xdr_u_int,_xdr_u_int);
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__weak_alias(xdr_u_int16_t,_xdr_u_int16_t);
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__weak_alias(xdr_u_int32_t,_xdr_u_int32_t);
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__weak_alias(xdr_u_long,_xdr_u_long);
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__weak_alias(xdr_u_short,_xdr_u_short);
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__weak_alias(xdr_union,_xdr_union);
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__weak_alias(xdr_void,_xdr_void);
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__weak_alias(xdr_wrapstring,_xdr_wrapstring);
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#endif
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/*
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* constants specific to the xdr "protocol"
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*/
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#define XDR_FALSE ((long) 0)
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#define XDR_TRUE ((long) 1)
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#define LASTUNSIGNED ((u_int) 0-1)
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/*
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* for unit alignment
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*/
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static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
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/*
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* Free a data structure using XDR
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* Not a filter, but a convenient utility nonetheless
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*/
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void
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xdr_free(proc, objp)
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xdrproc_t proc;
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char *objp;
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{
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XDR x;
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x.x_op = XDR_FREE;
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(*proc)(&x, objp);
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}
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/*
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* XDR nothing
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*/
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bool_t
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xdr_void(/* xdrs, addr */)
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/* XDR *xdrs; */
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/* caddr_t addr; */
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{
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return (TRUE);
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}
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/*
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* XDR integers
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*/
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bool_t
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xdr_int(xdrs, ip)
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XDR *xdrs;
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int *ip;
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{
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long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (long) *ip;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*ip = (int) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned integers
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*/
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bool_t
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xdr_u_int(xdrs, up)
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XDR *xdrs;
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u_int *up;
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{
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u_long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (u_long) *up;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*up = (u_int) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR long integers
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* same as xdr_u_long - open coded to save a proc call!
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*/
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bool_t
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xdr_long(xdrs, lp)
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register XDR *xdrs;
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long *lp;
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{
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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return (XDR_PUTLONG(xdrs, lp));
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case XDR_DECODE:
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return (XDR_GETLONG(xdrs, lp));
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned long integers
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* same as xdr_long - open coded to save a proc call!
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*/
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bool_t
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xdr_u_long(xdrs, ulp)
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register XDR *xdrs;
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u_long *ulp;
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{
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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return (XDR_PUTLONG(xdrs, (long *)ulp));
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case XDR_DECODE:
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return (XDR_GETLONG(xdrs, (long *)ulp));
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR 32-bit integers
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* same as xdr_u_int32_t - open coded to save a proc call!
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*/
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bool_t
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xdr_int32_t(xdrs, int32_p)
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register XDR *xdrs;
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int32_t *int32_p;
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{
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long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (long) *int32_p;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*int32_p = (int32_t) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned 32-bit integers
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* same as xdr_int32_t - open coded to save a proc call!
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*/
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bool_t
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xdr_u_int32_t(xdrs, u_int32_p)
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register XDR *xdrs;
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u_int32_t *u_int32_p;
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{
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u_long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (u_long) *u_int32_p;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*u_int32_p = (u_int32_t) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR short integers
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*/
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bool_t
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xdr_short(xdrs, sp)
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register XDR *xdrs;
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short *sp;
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{
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long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (long) *sp;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*sp = (short) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned short integers
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*/
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bool_t
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xdr_u_short(xdrs, usp)
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register XDR *xdrs;
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u_short *usp;
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{
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u_long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (u_long) *usp;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*usp = (u_short) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR 16-bit integers
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*/
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bool_t
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xdr_int16_t(xdrs, int16_p)
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register XDR *xdrs;
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int16_t *int16_p;
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{
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long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (long) *int16_p;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*int16_p = (int16_t) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned 16-bit integers
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*/
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bool_t
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xdr_u_int16_t(xdrs, u_int16_p)
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register XDR *xdrs;
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u_int16_t *u_int16_p;
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{
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u_long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (u_long) *u_int16_p;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*u_int16_p = (u_int16_t) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR a char
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*/
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bool_t
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xdr_char(xdrs, cp)
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XDR *xdrs;
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char *cp;
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{
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int i;
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i = (*cp);
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if (!xdr_int(xdrs, &i)) {
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return (FALSE);
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}
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*cp = i;
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return (TRUE);
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}
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/*
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* XDR an unsigned char
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*/
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bool_t
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xdr_u_char(xdrs, cp)
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XDR *xdrs;
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u_char *cp;
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{
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u_int u;
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u = (*cp);
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if (!xdr_u_int(xdrs, &u)) {
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return (FALSE);
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}
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*cp = u;
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return (TRUE);
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}
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/*
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* XDR booleans
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*/
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bool_t
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xdr_bool(xdrs, bp)
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register XDR *xdrs;
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bool_t *bp;
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{
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long lb;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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lb = *bp ? XDR_TRUE : XDR_FALSE;
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return (XDR_PUTLONG(xdrs, &lb));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &lb)) {
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return (FALSE);
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}
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*bp = (lb == XDR_FALSE) ? FALSE : TRUE;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR enumerations
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*/
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bool_t
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xdr_enum(xdrs, ep)
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XDR *xdrs;
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enum_t *ep;
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{
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#ifndef lint
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enum sizecheck { SIZEVAL }; /* used to find the size of an enum */
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/*
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* enums are treated as ints
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*/
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if (sizeof (enum sizecheck) == sizeof (long)) {
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return (xdr_long(xdrs, (long *)ep));
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} else if (sizeof (enum sizecheck) == sizeof (int)) {
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return (xdr_int(xdrs, (int *)ep));
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} else if (sizeof (enum sizecheck) == sizeof (short)) {
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return (xdr_short(xdrs, (short *)ep));
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} else {
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return (FALSE);
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}
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#else
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(void) (xdr_short(xdrs, (short *)ep));
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(void) (xdr_int(xdrs, (short *)ep));
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return (xdr_long(xdrs, (long *)ep));
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#endif
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}
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/*
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* XDR opaque data
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* Allows the specification of a fixed size sequence of opaque bytes.
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* cp points to the opaque object and cnt gives the byte length.
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*/
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bool_t
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xdr_opaque(xdrs, cp, cnt)
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register XDR *xdrs;
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caddr_t cp;
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register u_int cnt;
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{
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register u_int rndup;
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static crud[BYTES_PER_XDR_UNIT];
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/*
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* if no data we are done
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*/
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if (cnt == 0)
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return (TRUE);
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/*
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* round byte count to full xdr units
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*/
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rndup = cnt % BYTES_PER_XDR_UNIT;
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if (rndup > 0)
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rndup = BYTES_PER_XDR_UNIT - rndup;
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if (xdrs->x_op == XDR_DECODE) {
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if (!XDR_GETBYTES(xdrs, cp, cnt)) {
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return (FALSE);
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}
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if (rndup == 0)
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return (TRUE);
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return (XDR_GETBYTES(xdrs, (caddr_t)crud, rndup));
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}
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if (xdrs->x_op == XDR_ENCODE) {
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if (!XDR_PUTBYTES(xdrs, cp, cnt)) {
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return (FALSE);
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}
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if (rndup == 0)
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return (TRUE);
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return (XDR_PUTBYTES(xdrs, xdr_zero, rndup));
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}
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if (xdrs->x_op == XDR_FREE) {
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR counted bytes
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* *cpp is a pointer to the bytes, *sizep is the count.
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* If *cpp is NULL maxsize bytes are allocated
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*/
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bool_t
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xdr_bytes(xdrs, cpp, sizep, maxsize)
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register XDR *xdrs;
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char **cpp;
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register u_int *sizep;
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u_int maxsize;
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{
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register char *sp = *cpp; /* sp is the actual string pointer */
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register u_int nodesize;
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/*
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* first deal with the length since xdr bytes are counted
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*/
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if (! xdr_u_int(xdrs, sizep)) {
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return (FALSE);
|
|
}
|
|
nodesize = *sizep;
|
|
if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE)) {
|
|
return (FALSE);
|
|
}
|
|
|
|
/*
|
|
* now deal with the actual bytes
|
|
*/
|
|
switch (xdrs->x_op) {
|
|
|
|
case XDR_DECODE:
|
|
if (nodesize == 0) {
|
|
return (TRUE);
|
|
}
|
|
if (sp == NULL) {
|
|
*cpp = sp = (char *)mem_alloc(nodesize);
|
|
}
|
|
if (sp == NULL) {
|
|
(void) fprintf(stderr, "xdr_bytes: out of memory\n");
|
|
return (FALSE);
|
|
}
|
|
/* fall into ... */
|
|
|
|
case XDR_ENCODE:
|
|
return (xdr_opaque(xdrs, sp, nodesize));
|
|
|
|
case XDR_FREE:
|
|
if (sp != NULL) {
|
|
mem_free(sp, nodesize);
|
|
*cpp = NULL;
|
|
}
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
}
|
|
|
|
/*
|
|
* Implemented here due to commonality of the object.
|
|
*/
|
|
bool_t
|
|
xdr_netobj(xdrs, np)
|
|
XDR *xdrs;
|
|
struct netobj *np;
|
|
{
|
|
|
|
return (xdr_bytes(xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ));
|
|
}
|
|
|
|
/*
|
|
* XDR a descriminated union
|
|
* Support routine for discriminated unions.
|
|
* You create an array of xdrdiscrim structures, terminated with
|
|
* an entry with a null procedure pointer. The routine gets
|
|
* the discriminant value and then searches the array of xdrdiscrims
|
|
* looking for that value. It calls the procedure given in the xdrdiscrim
|
|
* to handle the discriminant. If there is no specific routine a default
|
|
* routine may be called.
|
|
* If there is no specific or default routine an error is returned.
|
|
*/
|
|
bool_t
|
|
xdr_union(xdrs, dscmp, unp, choices, dfault)
|
|
register XDR *xdrs;
|
|
enum_t *dscmp; /* enum to decide which arm to work on */
|
|
char *unp; /* the union itself */
|
|
struct xdr_discrim *choices; /* [value, xdr proc] for each arm */
|
|
xdrproc_t dfault; /* default xdr routine */
|
|
{
|
|
register enum_t dscm;
|
|
|
|
/*
|
|
* we deal with the discriminator; it's an enum
|
|
*/
|
|
if (! xdr_enum(xdrs, dscmp)) {
|
|
return (FALSE);
|
|
}
|
|
dscm = *dscmp;
|
|
|
|
/*
|
|
* search choices for a value that matches the discriminator.
|
|
* if we find one, execute the xdr routine for that value.
|
|
*/
|
|
for (; choices->proc != NULL_xdrproc_t; choices++) {
|
|
if (choices->value == dscm)
|
|
return ((*(choices->proc))(xdrs, unp));
|
|
}
|
|
|
|
/*
|
|
* no match - execute the default xdr routine if there is one
|
|
*/
|
|
return ((dfault == NULL_xdrproc_t) ? FALSE :
|
|
(*dfault)(xdrs, unp));
|
|
}
|
|
|
|
|
|
/*
|
|
* Non-portable xdr primitives.
|
|
* Care should be taken when moving these routines to new architectures.
|
|
*/
|
|
|
|
|
|
/*
|
|
* XDR null terminated ASCII strings
|
|
* xdr_string deals with "C strings" - arrays of bytes that are
|
|
* terminated by a NULL character. The parameter cpp references a
|
|
* pointer to storage; If the pointer is null, then the necessary
|
|
* storage is allocated. The last parameter is the max allowed length
|
|
* of the string as specified by a protocol.
|
|
*/
|
|
bool_t
|
|
xdr_string(xdrs, cpp, maxsize)
|
|
register XDR *xdrs;
|
|
char **cpp;
|
|
u_int maxsize;
|
|
{
|
|
register char *sp = *cpp; /* sp is the actual string pointer */
|
|
u_int size;
|
|
u_int nodesize;
|
|
|
|
/*
|
|
* first deal with the length since xdr strings are counted-strings
|
|
*/
|
|
switch (xdrs->x_op) {
|
|
case XDR_FREE:
|
|
if (sp == NULL) {
|
|
return(TRUE); /* already free */
|
|
}
|
|
/* fall through... */
|
|
case XDR_ENCODE:
|
|
size = strlen(sp);
|
|
break;
|
|
case XDR_DECODE:
|
|
break;
|
|
}
|
|
if (! xdr_u_int(xdrs, &size)) {
|
|
return (FALSE);
|
|
}
|
|
if (size > maxsize) {
|
|
return (FALSE);
|
|
}
|
|
nodesize = size + 1;
|
|
|
|
/*
|
|
* now deal with the actual bytes
|
|
*/
|
|
switch (xdrs->x_op) {
|
|
|
|
case XDR_DECODE:
|
|
if (nodesize == 0) {
|
|
return (TRUE);
|
|
}
|
|
if (sp == NULL)
|
|
*cpp = sp = (char *)mem_alloc(nodesize);
|
|
if (sp == NULL) {
|
|
(void) fprintf(stderr, "xdr_string: out of memory\n");
|
|
return (FALSE);
|
|
}
|
|
sp[size] = 0;
|
|
/* fall into ... */
|
|
|
|
case XDR_ENCODE:
|
|
return (xdr_opaque(xdrs, sp, size));
|
|
|
|
case XDR_FREE:
|
|
mem_free(sp, nodesize);
|
|
*cpp = NULL;
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
}
|
|
|
|
/*
|
|
* Wrapper for xdr_string that can be called directly from
|
|
* routines like clnt_call
|
|
*/
|
|
bool_t
|
|
xdr_wrapstring(xdrs, cpp)
|
|
XDR *xdrs;
|
|
char **cpp;
|
|
{
|
|
return xdr_string(xdrs, cpp, LASTUNSIGNED);
|
|
}
|