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      1 /*	$NetBSD: tftp.h,v 1.8 2003/08/07 09:44:12 agc 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 
     56 struct	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