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18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
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27 * Mountain View, California 94043
29 * @(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro
30 * @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC
31 * $FreeBSD: src/lib/libc/xdr/xdr_stdio.c,v 1.7 1999/08/28 00:02:56 peter Exp $
32 * $DragonFly: src/lib/libc/xdr/xdr_stdio.c,v 1.3 2004/10/25 19:38:02 drhodus Exp $
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
45 #include <rpc/types.h>
49 static bool_t xdrstdio_getlong();
50 static bool_t xdrstdio_putlong();
51 static bool_t xdrstdio_getbytes();
52 static bool_t xdrstdio_putbytes();
53 static u_int xdrstdio_getpos();
54 static bool_t xdrstdio_setpos();
55 static int32_t *xdrstdio_inline();
56 static void xdrstdio_destroy();
59 * Ops vector for stdio type XDR
61 static struct xdr_ops xdrstdio_ops = {
62 xdrstdio_getlong, /* deseraialize a long int */
63 xdrstdio_putlong, /* seraialize a long int */
64 xdrstdio_getbytes, /* deserialize counted bytes */
65 xdrstdio_putbytes, /* serialize counted bytes */
66 xdrstdio_getpos, /* get offset in the stream */
67 xdrstdio_setpos, /* set offset in the stream */
68 xdrstdio_inline, /* prime stream for inline macros */
69 xdrstdio_destroy /* destroy stream */
73 * Initialize a stdio xdr stream.
74 * Sets the xdr stream handle xdrs for use on the stream file.
75 * Operation flag is set to op.
78 xdrstdio_create(xdrs, file, op)
85 xdrs->x_ops = &xdrstdio_ops;
86 xdrs->x_private = (caddr_t)file;
92 * Destroy a stdio xdr stream.
93 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
96 xdrstdio_destroy(xdrs)
99 (void)fflush((FILE *)xdrs->x_private);
100 /* xx should we close the file ?? */
104 xdrstdio_getlong(xdrs, lp)
109 if (fread((caddr_t)lp, sizeof(int32_t), 1,
110 (FILE *)xdrs->x_private) != 1)
112 *lp = (long)ntohl((int32_t)*lp);
117 xdrstdio_putlong(xdrs, lp)
122 long mycopy = (long)htonl((int32_t)*lp);
124 if (fwrite((caddr_t)&mycopy, sizeof(int32_t), 1,
125 (FILE *)xdrs->x_private) != 1)
131 xdrstdio_getbytes(xdrs, addr, len)
137 if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
143 xdrstdio_putbytes(xdrs, addr, len)
149 if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
155 xdrstdio_getpos(xdrs)
159 return ((u_int) ftell((FILE *)xdrs->x_private));
163 xdrstdio_setpos(xdrs, pos)
168 return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
173 xdrstdio_inline(xdrs, len)
179 * Must do some work to implement this: must insure
180 * enough data in the underlying stdio buffer,
181 * that the buffer is aligned so that we can indirect through a
182 * long *, and stuff this pointer in xdrs->x_buf. Doing
183 * a fread or fwrite to a scratch buffer would defeat
184 * most of the gains to be had here and require storage
185 * management on this buffer, so we don't do this.