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