/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tftp.h 8.1 (Berkeley) 6/2/93
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*/
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#ifndef _ARPA_TFTP_H
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#define _ARPA_TFTP_H 1
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/*
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* Trivial File Transfer Protocol (IEN-133)
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*/
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#define SEGSIZE 512 /* data segment size */
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/*
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* Packet types.
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*/
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#define RRQ 01 /* read request */
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#define WRQ 02 /* write request */
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#define DATA 03 /* data packet */
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#define ACK 04 /* acknowledgement */
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#define ERROR 05 /* error code */
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struct tftphdr {
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short th_opcode; /* packet type */
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union {
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char tu_padding[3]; /* sizeof() compat */
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struct {
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union {
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unsigned short tu_block; /* block # */
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short tu_code; /* error code */
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} __attribute__ ((__packed__)) th_u3;
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char tu_data[0]; /* data or error string */
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} __attribute__ ((__packed__)) th_u2;
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char tu_stuff[0]; /* request packet stuff */
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} __attribute__ ((__packed__)) th_u1;
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} __attribute__ ((__packed__));
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#define th_block th_u1.th_u2.th_u3.tu_block
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#define th_code th_u1.th_u2.th_u3.tu_code
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#define th_stuff th_u1.tu_stuff
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#define th_data th_u1.th_u2.tu_data
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#define th_msg th_u1.th_u2.tu_data
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/*
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* Error codes.
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*/
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#define EUNDEF 0 /* not defined */
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#define ENOTFOUND 1 /* file not found */
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#define EACCESS 2 /* access violation */
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#define ENOSPACE 3 /* disk full or allocation exceeded */
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#define EBADOP 4 /* illegal TFTP operation */
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#define EBADID 5 /* unknown transfer ID */
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#define EEXISTS 6 /* file already exists */
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#define ENOUSER 7 /* no such user */
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#endif /* arpa/tftp.h */
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