source: rtems/cpukit/librpc/src/xdr/xdr_stdio.c @ f26145b

4.104.114.84.95
Last change on this file since f26145b was e5fc1df, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 20, 2002 at 3:56:25 PM

2002-08-20 Joel Sherrill <joel@…>

  • src/xdr/xdr_stdio.c: Per PR268, add include of <netinet/in.h> to avoid warning on ntohl().
  • Property mode set to 100644
File size: 4.8 KB
Line 
1/*
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.
8 *
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.
12 *
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.
16 *
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.
20 *
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.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
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";*/
33static char *rcsid = "$FreeBSD: src/lib/libc/xdr/xdr_stdio.c,v 1.7 1999/08/28 00:02:56 peter Exp $";
34#endif
35
36/*
37 * xdr_stdio.c, XDR implementation on standard i/o file.
38 *
39 * Copyright (C) 1984, Sun Microsystems, Inc.
40 *
41 * This set of routines implements a XDR on a stdio stream.
42 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
43 * from the stream.
44 */
45
46#include <rpc/types.h>
47#include <stdio.h>
48#include <rpc/xdr.h>
49#include <netinet/in.h>
50
51static bool_t   xdrstdio_getlong();
52static bool_t   xdrstdio_putlong();
53static bool_t   xdrstdio_getbytes();
54static bool_t   xdrstdio_putbytes();
55static u_int    xdrstdio_getpos();
56static bool_t   xdrstdio_setpos();
57static int32_t *xdrstdio_inline();
58static void     xdrstdio_destroy();
59
60/*
61 * Ops vector for stdio type XDR
62 */
63static struct xdr_ops   xdrstdio_ops = {
64        xdrstdio_getlong,       /* deseraialize a long int */
65        xdrstdio_putlong,       /* seraialize a long int */
66        xdrstdio_getbytes,      /* deserialize counted bytes */
67        xdrstdio_putbytes,      /* serialize counted bytes */
68        xdrstdio_getpos,        /* get offset in the stream */
69        xdrstdio_setpos,        /* set offset in the stream */
70        xdrstdio_inline,        /* prime stream for inline macros */
71        xdrstdio_destroy        /* destroy stream */
72};
73
74/*
75 * Initialize a stdio xdr stream.
76 * Sets the xdr stream handle xdrs for use on the stream file.
77 * Operation flag is set to op.
78 */
79void
80xdrstdio_create(xdrs, file, op)
81        register XDR *xdrs;
82        FILE *file;
83        enum xdr_op op;
84{
85
86        xdrs->x_op = op;
87        xdrs->x_ops = &xdrstdio_ops;
88        xdrs->x_private = (caddr_t)file;
89        xdrs->x_handy = 0;
90        xdrs->x_base = 0;
91}
92
93/*
94 * Destroy a stdio xdr stream.
95 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
96 */
97static void
98xdrstdio_destroy(xdrs)
99        register XDR *xdrs;
100{
101        (void)fflush((FILE *)xdrs->x_private);
102        /* xx should we close the file ?? */
103}
104
105static bool_t
106xdrstdio_getlong(xdrs, lp)
107        XDR *xdrs;
108        register long *lp;
109{
110
111        if (fread((caddr_t)lp, sizeof(int32_t), 1,
112                (FILE *)xdrs->x_private) != 1)
113                return (FALSE);
114        *lp = (long)ntohl((int32_t)*lp);
115        return (TRUE);
116}
117
118static bool_t
119xdrstdio_putlong(xdrs, lp)
120        XDR *xdrs;
121        long *lp;
122{
123
124        long mycopy = (long)htonl((int32_t)*lp);
125
126        if (fwrite((caddr_t)&mycopy, sizeof(int32_t), 1,
127                (FILE *)xdrs->x_private) != 1)
128                return (FALSE);
129        return (TRUE);
130}
131
132static bool_t
133xdrstdio_getbytes(xdrs, addr, len)
134        XDR *xdrs;
135        caddr_t addr;
136        u_int len;
137{
138
139        if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
140                return (FALSE);
141        return (TRUE);
142}
143
144static bool_t
145xdrstdio_putbytes(xdrs, addr, len)
146        XDR *xdrs;
147        caddr_t addr;
148        u_int len;
149{
150
151        if ((len != 0) && (fwrite(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1))
152                return (FALSE);
153        return (TRUE);
154}
155
156static u_int
157xdrstdio_getpos(xdrs)
158        XDR *xdrs;
159{
160
161        return ((u_int) ftell((FILE *)xdrs->x_private));
162}
163
164static bool_t
165xdrstdio_setpos(xdrs, pos)
166        XDR *xdrs;
167        u_int pos;
168{
169
170        return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ?
171                FALSE : TRUE);
172}
173
174static int32_t *
175xdrstdio_inline(xdrs, len)
176        XDR *xdrs;
177        u_int len;
178{
179
180        /*
181         * Must do some work to implement this: must insure
182         * enough data in the underlying stdio buffer,
183         * that the buffer is aligned so that we can indirect through a
184         * long *, and stuff this pointer in xdrs->x_buf.  Doing
185         * a fread or fwrite to a scratch buffer would defeat
186         * most of the gains to be had here and require storage
187         * management on this buffer, so we don't do this.
188         */
189        return (NULL);
190}
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