tftp.h revision 1.6 
1/*	$OpenBSD: tftp.h,v 1.6 2006/07/20 09:42:44 mglocker 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_ */
84