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
29 #include <afsconfig.h>
30 #include <afs/param.h>
36 * xdr_stdio.c, XDR implementation on standard i/o file.
38 * Copyright (C) 1984, Sun Microsystems, Inc.
40 * This set of routines implements a XDR on a stdio stream.
41 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
48 static bool_t xdrstdio_getint32();
49 static bool_t xdrstdio_putint32();
50 static bool_t xdrstdio_getbytes();
51 static bool_t xdrstdio_putbytes();
52 static u_int xdrstdio_getpos();
53 static bool_t xdrstdio_setpos();
54 static afs_int32 *xdrstdio_inline();
55 static void xdrstdio_destroy();
58 * Ops vector for stdio type XDR
60 static struct xdr_ops xdrstdio_ops = {
61 .x_getint32 = xdrstdio_getint32, /* deserialize an afs_int32 */
62 .x_putint32 = xdrstdio_putint32, /* serialize an afs_int32 */
63 .x_getbytes = xdrstdio_getbytes, /* deserialize counted bytes */
64 .x_putbytes = xdrstdio_putbytes, /* serialize counted bytes */
65 .x_getpos = xdrstdio_getpos, /* get offset in the stream */
66 .x_setpos = xdrstdio_setpos, /* set offset in the stream */
67 .x_inline = xdrstdio_inline, /* prime stream for inline macros */
68 .x_destroy = xdrstdio_destroy /* destroy stream */
72 * Initialize a stdio xdr stream.
73 * Sets the xdr stream handle xdrs for use on the stream file.
74 * Operation flag is set to op.
77 xdrstdio_create(xdrs, file, op)
84 xdrs->x_ops = &xdrstdio_ops;
85 xdrs->x_private = (caddr_t) file;
91 * Destroy a stdio xdr stream.
92 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
95 xdrstdio_destroy(xdrs)
98 (void)fflush((FILE *) xdrs->x_private);
99 /* xx should we close the file ?? */
103 xdrstdio_getint32(xdrs, lp)
108 if (fread((caddr_t) lp, sizeof(afs_int32), 1, (FILE *) xdrs->x_private) !=
118 xdrstdio_putint32(xdrs, lp)
124 afs_int32 mycopy = htonl(*lp);
127 if (fwrite((caddr_t) lp, sizeof(afs_int32), 1, (FILE *) xdrs->x_private)
134 xdrstdio_getbytes(xdrs, addr, len)
141 && (fread(addr, (int)len, 1, (FILE *) xdrs->x_private) != 1))
147 xdrstdio_putbytes(xdrs, addr, len)
154 && (fwrite(addr, (int)len, 1, (FILE *) xdrs->x_private) != 1))
160 xdrstdio_getpos(xdrs)
164 return ((u_int) ftell((FILE *) xdrs->x_private));
168 xdrstdio_setpos(xdrs, pos)
173 return ((fseek((FILE *) xdrs->x_private, (afs_int32) pos, 0) <
178 xdrstdio_inline(xdrs, len)
184 * Must do some work to implement this: must insure
185 * enough data in the underlying stdio buffer,
186 * that the buffer is aligned so that we can indirect through a
187 * afs_int32 *, and stuff this pointer in xdrs->x_buf. Doing
188 * a fread or fwrite to a scratch buffer would defeat
189 * most of the gains to be had here and require storage
190 * management on this buffer, so we don't do this.