1 /*********************************************************************
2 * RPC for the Windows NT Operating System
3 * 1993 by Martin F. Gergeleit
4 * Users may use, copy or modify Sun RPC for the Windows NT Operating
5 * System according to the Sun copyright below.
7 * RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO
8 * WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE
9 * USE OF. USE ENTIRELY AT YOUR OWN RISK!!!
10 *********************************************************************/
12 /* @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC */
14 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
15 * unrestricted use provided that this legend is included on all tape
16 * media and as a part of the software program in whole or part. Users
17 * may copy or modify Sun RPC without charge, but are not authorized
18 * to license or distribute it to anyone else except as part of a product or
19 * program developed by the user.
21 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
22 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
25 * Sun RPC is provided with no support and without any obligation on the
26 * part of Sun Microsystems, Inc. to assist in its use, correction,
27 * modification or enhancement.
29 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
30 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
31 * OR ANY PART THEREOF.
33 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
34 * or profits or other special, indirect and consequential damages, even if
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37 * Sun Microsystems, Inc.
39 * Mountain View, California 94043
41 #if !defined(lint) && defined(SCCSIDS)
42 static char sccsid[] = "@(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro";
46 * xdr_stdio.c, XDR implementation on standard i/o file.
48 * Copyright (C) 1984, Sun Microsystems, Inc.
50 * This set of routines implements a XDR on a stdio stream.
51 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
58 #include <rpc/types.h>
63 static bool_t xdrstdio_getlong();
64 static bool_t xdrstdio_putlong();
65 static bool_t xdrstdio_getbytes();
66 static bool_t xdrstdio_putbytes();
67 static u_int xdrstdio_getpos();
68 static bool_t xdrstdio_setpos();
69 static long * xdrstdio_inline();
70 static void xdrstdio_destroy();
73 * Ops vector for stdio type XDR
75 static struct xdr_ops xdrstdio_ops = {
76 xdrstdio_getlong, /* deseraialize a long int */
77 xdrstdio_putlong, /* seraialize a long int */
78 xdrstdio_getbytes, /* deserialize counted bytes */
79 xdrstdio_putbytes, /* serialize counted bytes */
80 xdrstdio_getpos, /* get offset in the stream */
81 xdrstdio_setpos, /* set offset in the stream */
82 xdrstdio_inline, /* prime stream for inline macros */
83 xdrstdio_destroy /* destroy stream */
87 * Initialize a stdio xdr stream.
88 * Sets the xdr stream handle xdrs for use on the stream file.
89 * Operation flag is set to op.
92 xdrstdio_create(xdrs, file, op)
99 xdrs->x_ops = &xdrstdio_ops;
100 xdrs->x_private = (caddr_t)file;
106 * Destroy a stdio xdr stream.
107 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
110 xdrstdio_destroy(xdrs)
113 (void)fflush((FILE *)xdrs->x_private);
114 /* xx should we close the file ?? */
118 xdrstdio_getlong(xdrs, lp)
123 if (fread((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1)
132 xdrstdio_putlong(xdrs, lp)
138 long mycopy = htonl(*lp);
141 if (fwrite((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1)
147 xdrstdio_getbytes(xdrs, addr, len)
153 if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
159 xdrstdio_putbytes(xdrs, addr, len)
165 if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
171 xdrstdio_getpos(xdrs)
175 return ((u_int) ftell((FILE *)xdrs->x_private));
179 xdrstdio_setpos(xdrs, pos)
184 return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
189 xdrstdio_inline(xdrs, len)
195 * Must do some work to implement this: must insure
196 * enough data in the underlying stdio buffer,
197 * that the buffer is aligned so that we can indirect through a
198 * long *, and stuff this pointer in xdrs->x_buf. Doing
199 * a fread or fwrite to a scratch buffer would defeat
200 * most of the gains to be had here and require storage
201 * management on this buffer, so we don't do this.