1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)tftp.h 8.1 (Berkeley) 6/2/93
30 */
31
32#ifndef _ARPA_TFTP_H
33#define _ARPA_TFTP_H 1
34
35/*
36 * Trivial File Transfer Protocol (IEN-133)
37 */
38#define SEGSIZE 512 /* data segment size */
39
40/*
41 * Packet types.
42 */
43#define RRQ 01 /* read request */
44#define WRQ 02 /* write request */
45#define DATA 03 /* data packet */
46#define ACK 04 /* acknowledgement */
47#define ERROR 05 /* error code */
48
49struct tftphdr {
50 short th_opcode; /* packet type */
51 union {
52 char tu_padding[3]; /* sizeof() compat */
53 struct {
54 union {
55 unsigned short tu_block; /* block # */
56 short tu_code; /* error code */
57 } __attribute__ ((__packed__)) th_u3;
58 char tu_data[0]; /* data or error string */
59 } __attribute__ ((__packed__)) th_u2;
60 char tu_stuff[0]; /* request packet stuff */
61 } __attribute__ ((__packed__)) th_u1;
62} __attribute__ ((__packed__));
63
64#define th_block th_u1.th_u2.th_u3.tu_block
65#define th_code th_u1.th_u2.th_u3.tu_code
66#define th_stuff th_u1.tu_stuff
67#define th_data th_u1.th_u2.tu_data
68#define th_msg th_u1.th_u2.tu_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
82#endif /* arpa/tftp.h */