1/* $OpenBSD: tftp.h,v 1.8 2006/07/26 16:43:30 deraadt Exp $ */
2/* $NetBSD: tftp.h,v 1.3 1994/10/26 00:56:48 cgd Exp $ */
3
4/*
5 * Copyright (c) 1983 Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)tftp.h 5.4 (Berkeley) 4/3/91
33 */
34
35#ifndef _TFTP_H_
36#define _TFTP_H_
37
38/*
39 * Trivial File Transfer Protocol (IEN-133)
40 */
41#define SEGSIZE 512 /* data segment size */
42#define SEGSIZE_MIN 8 /* minimal data segment size */
43#define SEGSIZE_MAX 65464 /* maximal data segment size */
44
45/*
46 * Packet types.
47 */
48#define RRQ 01 /* read request */
49#define WRQ 02 /* write request */
50#define DATA 03 /* data packet */
51#define ACK 04 /* acknowledgement */
52#define ERROR 05 /* error code */
53#define OACK 06 /* option acknowledgement */
54
55struct tftphdr {
56 u_int16_t th_opcode; /* packet type */
57 union {
58 u_int16_t tu_block; /* block # */
59 u_int16_t tu_code; /* error code */
60 char tu_stuff[1]; /* request packet stuff */
61 } th_u;
62 char th_data[1]; /* data or error string */
63};
64
65#define th_block th_u.tu_block
66#define th_code th_u.tu_code
67#define th_stuff th_u.tu_stuff
68#define th_msg th_data
69
70/*
71 * Error codes.
72 */
73#define EUNDEF 0 /* not defined */
74#define ENOTFOUND 1 /* file not found */
75#define EACCESS 2 /* access violation */
76#define ENOSPACE 3 /* disk full or allocation exceeded */
77#define EBADOP 4 /* illegal TFTP operation */
78#define EBADID 5 /* unknown transfer ID */
79#define EEXISTS 6 /* file already exists */
80#define ENOUSER 7 /* no such user */
81#define EOPTNEG 8 /* option negotiation failed */
82
83#endif /* !_TFTP_H_ */