xref: /freebsd/include/arpa/tftp.h (revision 7aa383846770374466b1dcb2cefd71bde9acf463)
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  * 3. 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  * $FreeBSD$
31  */
32 
33 #ifndef _ARPA_TFTP_H_
34 #define	_ARPA_TFTP_H_
35 
36 /*
37  * Trivial File Transfer Protocol (IEN-133)
38  */
39 #define	SEGSIZE		512		/* data segment size */
40 
41 /*
42  * Packet types.
43  */
44 #define	RRQ	01			/* read request */
45 #define	WRQ	02			/* write request */
46 #define	DATA	03			/* data packet */
47 #define	ACK	04			/* acknowledgement */
48 #define	ERROR	05			/* error code */
49 #define	OACK	06			/* option acknowledgement */
50 
51 struct tftphdr {
52 	unsigned short	th_opcode;		/* packet type */
53 	union {
54 		unsigned short	tu_block;	/* block # */
55 		unsigned short	tu_code;	/* error code */
56 		char	tu_stuff[1];	/* request packet stuff */
57 	} __packed th_u;
58 	char	th_data[1];		/* data or error string */
59 } __packed;
60 
61 #define	th_block	th_u.tu_block
62 #define	th_code		th_u.tu_code
63 #define	th_stuff	th_u.tu_stuff
64 #define	th_msg		th_data
65 
66 /*
67  * Error codes.
68  */
69 #define	EUNDEF		0		/* not defined */
70 #define	ENOTFOUND	1		/* file not found */
71 #define	EACCESS		2		/* access violation */
72 #define	ENOSPACE	3		/* disk full or allocation exceeded */
73 #define	EBADOP		4		/* illegal TFTP operation */
74 #define	EBADID		5		/* unknown transfer ID */
75 #define	EEXISTS		6		/* file already exists */
76 #define	ENOUSER		7		/* no such user */
77 #define	EOPTNEG		8		/* option negotiation failed */
78 
79 #endif /* !_TFTP_H_ */
80