1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 32 #ifndef _ARPA_TFTP_H_ 33 #define _ARPA_TFTP_H_ 34 35 #include <sys/cdefs.h> 36 37 /* 38 * Trivial File Transfer Protocol (IEN-133) 39 */ 40 #define SEGSIZE 512 /* data segment size */ 41 42 /* 43 * Packet types. 44 */ 45 #define RRQ 01 /* read request */ 46 #define WRQ 02 /* write request */ 47 #define DATA 03 /* data packet */ 48 #define ACK 04 /* acknowledgement */ 49 #define ERROR 05 /* error code */ 50 #define OACK 06 /* option acknowledgement */ 51 52 struct tftphdr { 53 unsigned short th_opcode; /* packet type */ 54 union { 55 unsigned short tu_block; /* block # */ 56 unsigned short tu_code; /* error code */ 57 char tu_stuff[1]; /* request packet stuff */ 58 } __packed th_u; 59 char th_data[1]; /* data or error string */ 60 } __packed; 61 62 #define th_block th_u.tu_block 63 #define th_code th_u.tu_code 64 #define th_stuff th_u.tu_stuff 65 #define th_msg th_data 66 67 /* 68 * Error codes. 69 */ 70 #define EUNDEF 0 /* not defined */ 71 #define ENOTFOUND 1 /* file not found */ 72 #define EACCESS 2 /* access violation */ 73 #define ENOSPACE 3 /* disk full or allocation exceeded */ 74 #define EBADOP 4 /* illegal TFTP operation */ 75 #define EBADID 5 /* unknown transfer ID */ 76 #define EEXISTS 6 /* file already exists */ 77 #define ENOUSER 7 /* no such user */ 78 #define EOPTNEG 8 /* option negotiation failed */ 79 80 #endif /* !_TFTP_H_ */ 81