1/*	$NetBSD: tftp.h,v 1.7 2003/06/11 01:41:14 briggs Exp $	*/
2
3/*
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)tftp.h	8.1 (Berkeley) 6/2/93
32 */
33
34#ifndef _ARPA_TFTP_H_
35#define	_ARPA_TFTP_H_
36
37/*
38 * Trivial File Transfer Protocol (IEN-133)
39 */
40#define	SEGSIZE		512	/* data segment size */
41#define	MAXSEGSIZE	65464	/* maximum negotiated data segment size */
42
43#define PKTSIZE		SEGSIZE + 4
44#define MAXPKTSIZE	MAXSEGSIZE + 4
45
46/*
47 * Packet types.
48 */
49#define	RRQ	01			/* read request */
50#define	WRQ	02			/* write request */
51#define	DATA	03			/* data packet */
52#define	ACK	04			/* acknowledgement */
53#define	ERROR	05			/* error code */
54#define	OACK	06			/* option acknowledgement */
55
56struct	tftphdr {
57	short	th_opcode;		/* packet type */
58	union {
59		unsigned short tu_block; /* block # */
60		short	tu_code;	/* error code */
61		char	tu_stuff[1];	/* request packet stuff */
62	} th_u;
63	char	th_data[1];		/* data or error string */
64};
65
66#define	th_block	th_u.tu_block
67#define	th_code		th_u.tu_code
68#define	th_stuff	th_u.tu_stuff
69#define	th_msg		th_data
70
71/*
72 * Error codes.
73 */
74#define	EUNDEF		0		/* not defined */
75#define	ENOTFOUND	1		/* file not found */
76#define	EACCESS		2		/* access violation */
77#define	ENOSPACE	3		/* disk full or allocation exceeded */
78#define	EBADOP		4		/* illegal TFTP operation */
79#define	EBADID		5		/* unknown transfer ID */
80#define	EEXISTS		6		/* file already exists */
81#define	ENOUSER		7		/* no such user */
82#define	EOPTNEG		8		/* option negotiation failed */
83
84#endif /* _ARPA_TFTP_H_ */
85