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01: /*
02:  * Copyright (c) 1983, 1993
03:  *      The Regents of the University of California.  All rights reserved.
04:  *
05:  * Redistribution and use in source and binary forms, with or without
06:  * modification, are permitted provided that the following conditions
07:  * are met:
08:  * 1. Redistributions of source code must retain the above copyright
09:  *    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: 
49: struct  tftphdr {
50:         short   th_opcode;                      /* packet type */
51:         union {
52:                 unsigned short  tu_block;       /* block # */
53:                 short   tu_code;                /* error code */
54:                 char    tu_stuff[1];            /* request packet stuff */
55:         } __attribute__ ((__packed__)) th_u;
56:         char    th_data[1];                     /* data or error string */
57: } __attribute__ ((__packed__));
58: 
59: #define th_block        th_u.tu_block
60: #define th_code         th_u.tu_code
61: #define th_stuff        th_u.tu_stuff
62: #define th_msg          th_data
63: 
64: /*
65:  * Error codes.
66:  */
67: #define EUNDEF          0               /* not defined */
68: #define ENOTFOUND       1               /* file not found */
69: #define EACCESS         2               /* access violation */
70: #define ENOSPACE        3               /* disk full or allocation exceeded */
71: #define EBADOP          4               /* illegal TFTP operation */
72: #define EBADID          5               /* unknown transfer ID */
73: #define EEXISTS         6               /* file already exists */
74: #define ENOUSER         7               /* no such user */
75: 
76: #endif /* arpa/tftp.h */
77: 

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