LCOM1920-T02G10

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

/*

 * Copyright (c) 1983, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)tftp.h        8.1 (Berkeley) 6/2/93

 */

#ifndef _ARPA_TFTP_H_

#define        _ARPA_TFTP_H_

/*

 * Trivial File Transfer Protocol (IEN-133)

 */

#define        SEGSIZE                512        /* data segment size */

#define        MAXSEGSIZE        65464        /* maximum negotiated data segment size */

#define PKTSIZE                SEGSIZE + 4

#define MAXPKTSIZE        MAXSEGSIZE + 4

/*

 * Packet types.

 */

#define        RRQ        01                        /* read request */

#define        WRQ        02                        /* write request */

#define        DATA        03                        /* data packet */

#define        ACK        04                        /* acknowledgement */

#define        ERROR        05                        /* error code */

#define        OACK        06                        /* option acknowledgement */

struct        tftphdr {

        short        th_opcode;                /* packet type */

        union {

                unsigned short tu_block; /* block # */

                short        tu_code;        /* error code */

                char        tu_stuff[1];        /* request packet stuff */

        } th_u;

        char        th_data[1];                /* data or error string */

};

#define        th_block        th_u.tu_block

#define        th_code                th_u.tu_code

#define        th_stuff        th_u.tu_stuff

#define        th_msg                th_data

/*

 * Error codes.

 */

#define        EUNDEF                0                /* not defined */

#define        ENOTFOUND        1                /* file not found */

#define        EACCESS                2                /* access violation */

#define        ENOSPACE        3                /* disk full or allocation exceeded */

#define        EBADOP                4                /* illegal TFTP operation */

#define        EBADID                5                /* unknown transfer ID */

#define        EEXISTS                6                /* file already exists */

#define        ENOUSER                7                /* no such user */

#define        EOPTNEG                8                /* option negotiation failed */

#endif /* _ARPA_TFTP_H_ */