Edit File: tftp.h
/* * 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. * 4. 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 1 /* * Trivial File Transfer Protocol (IEN-133) */ #define SEGSIZE 512 /* data segment size */ /* * 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 */ struct tftphdr { short th_opcode; /* packet type */ union { char tu_padding[3]; /* sizeof() compat */ struct { union { unsigned short tu_block; /* block # */ short tu_code; /* error code */ } __attribute__ ((__packed__)) th_u3; char tu_data[0]; /* data or error string */ } __attribute__ ((__packed__)) th_u2; char tu_stuff[0]; /* request packet stuff */ } __attribute__ ((__packed__)) th_u1; } __attribute__ ((__packed__)); #define th_block th_u1.th_u2.th_u3.tu_block #define th_code th_u1.th_u2.th_u3.tu_code #define th_stuff th_u1.tu_stuff #define th_data th_u1.th_u2.tu_data #define th_msg th_u1.th_u2.tu_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 */ #endif /* arpa/tftp.h */
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