inet/arpa/tftp.h

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)tftp.h      8.1 (Berkeley) 6/2/93
  30  */
  31
  32 #ifndef _ARPA_TFTP_H
  33 #define _ARPA_TFTP_H 1
  34
  35 /*
  36  * Trivial File Transfer Protocol (IEN-133)
  37  */
  38 #define SEGSIZE         512             /* data segment size */
  39
  40 /*
  41  * Packet types.
  42  */
  43 #define RRQ     01                              /* read request */
  44 #define WRQ     02                              /* write request */
  45 #define DATA    03                              /* data packet */
  46 #define ACK     04                              /* acknowledgement */
  47 #define ERROR   05                              /* error code */
  48
  49 struct  tftphdr {
  50         short   th_opcode;                      /* packet type */
  51         union {
  52                 char    tu_padding[3];          /* sizeof() compat */
  53                 struct {
  54                         union {
  55                                 unsigned short  tu_block;       /* block # */
  56                                 short   tu_code;                /* error code */
  57                         } __attribute__ ((__packed__)) th_u3;
  58                         char tu_data[0];        /* data or error string */
  59                 } __attribute__ ((__packed__)) th_u2;
  60                 char    tu_stuff[0];            /* request packet stuff */
  61         } __attribute__ ((__packed__)) th_u1;
  62 } __attribute__ ((__packed__));
  63
  64 #define th_block        th_u1.th_u2.th_u3.tu_block
  65 #define th_code         th_u1.th_u2.th_u3.tu_code
  66 #define th_stuff        th_u1.tu_stuff
  67 #define th_data         th_u1.th_u2.tu_data
  68 #define th_msg          th_u1.th_u2.tu_data
  69
  70 /*
  71  * Error codes.
  72  */
  73 #define EUNDEF          0               /* not defined */
  74 #define ENOTFOUND       1               /* file not found */
  75 #define EACCESS         2               /* access violation */
  76 #define ENOSPACE        3               /* disk full or allocation exceeded */
  77 #define EBADOP          4               /* illegal TFTP operation */
  78 #define EBADID          5               /* unknown transfer ID */
  79 #define EEXISTS         6               /* file already exists */
  80 #define ENOUSER         7               /* no such user */
  81
  82 #endif /* arpa/tftp.h */