2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
30 #if defined(LIBC_SCCS) && !defined(lint)
31 /*static char *sccsid = "from: @(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro";*/
32 /*static char *sccsid = "from: @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC";*/
33 static char *rcsid = "$FreeBSD: src/lib/libc/xdr/xdr_stdio.c,v 1.7 1999/08/28 00:02:56 peter Exp $";
37 * xdr_stdio.c, XDR implementation on standard i/o file.
39 * Copyright (C) 1984, Sun Microsystems, Inc.
41 * This set of routines implements a XDR on a stdio stream.
42 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
46 #include <rpc/types.h>
50 static bool_t xdrstdio_getlong();
51 static bool_t xdrstdio_putlong();
52 static bool_t xdrstdio_getbytes();
53 static bool_t xdrstdio_putbytes();
54 static u_int xdrstdio_getpos();
55 static bool_t xdrstdio_setpos();
56 static int32_t *xdrstdio_inline();
57 static void xdrstdio_destroy();
60 * Ops vector for stdio type XDR
62 static struct xdr_ops xdrstdio_ops = {
63 xdrstdio_getlong, /* deseraialize a long int */
64 xdrstdio_putlong, /* seraialize a long int */
65 xdrstdio_getbytes, /* deserialize counted bytes */
66 xdrstdio_putbytes, /* serialize counted bytes */
67 xdrstdio_getpos, /* get offset in the stream */
68 xdrstdio_setpos, /* set offset in the stream */
69 xdrstdio_inline, /* prime stream for inline macros */
70 xdrstdio_destroy /* destroy stream */
74 * Initialize a stdio xdr stream.
75 * Sets the xdr stream handle xdrs for use on the stream file.
76 * Operation flag is set to op.
79 xdrstdio_create(xdrs, file, op)
86 xdrs->x_ops = &xdrstdio_ops;
87 xdrs->x_private = (caddr_t)file;
93 * Destroy a stdio xdr stream.
94 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
97 xdrstdio_destroy(xdrs)
100 (void)fflush((FILE *)xdrs->x_private);
101 /* xx should we close the file ?? */
105 xdrstdio_getlong(xdrs, lp)
110 if (fread((caddr_t)lp, sizeof(int32_t), 1,
111 (FILE *)xdrs->x_private) != 1)
113 *lp = (long)ntohl((int32_t)*lp);
118 xdrstdio_putlong(xdrs, lp)
123 long mycopy = (long)htonl((int32_t)*lp);
125 if (fwrite((caddr_t)&mycopy, sizeof(int32_t), 1,
126 (FILE *)xdrs->x_private) != 1)
132 xdrstdio_getbytes(xdrs, addr, len)
138 if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
144 xdrstdio_putbytes(xdrs, addr, len)
150 if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
156 xdrstdio_getpos(xdrs)
160 return ((u_int) ftell((FILE *)xdrs->x_private));
164 xdrstdio_setpos(xdrs, pos)
169 return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
174 xdrstdio_inline(xdrs, len)
180 * Must do some work to implement this: must insure
181 * enough data in the underlying stdio buffer,
182 * that the buffer is aligned so that we can indirect through a
183 * long *, and stuff this pointer in xdrs->x_buf. Doing
184 * a fread or fwrite to a scratch buffer would defeat
185 * most of the gains to be had here and require storage
186 * management on this buffer, so we don't do this.