tar.h 2.6 KB

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  1. /*
  2. * Copyright (c) Ian F. Darwin 1986-1995.
  3. * Software written by Ian F. Darwin and others;
  4. * maintained 1995-present by Christos Zoulas and others.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. * 1. Redistributions of source code must retain the above copyright
  10. * notice immediately at the beginning of the file, without modification,
  11. * 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. *
  16. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20. * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26. * SUCH DAMAGE.
  27. */
  28. /*
  29. * Header file for public domain tar (tape archive) program.
  30. *
  31. * @(#)tar.h 1.20 86/10/29 Public Domain.
  32. *
  33. * Created 25 August 1985 by John Gilmore, ihnp4!hoptoad!gnu.
  34. *
  35. * $File: tar.h,v 1.13 2010/11/30 14:58:53 rrt Exp $ # checkin only
  36. */
  37. /*
  38. * Header block on tape.
  39. *
  40. * I'm going to use traditional DP naming conventions here.
  41. * A "block" is a big chunk of stuff that we do I/O on.
  42. * A "record" is a piece of info that we care about.
  43. * Typically many "record"s fit into a "block".
  44. */
  45. #define RECORDSIZE 512
  46. #define NAMSIZ 100
  47. #define TUNMLEN 32
  48. #define TGNMLEN 32
  49. union record {
  50. unsigned char charptr[RECORDSIZE];
  51. struct header {
  52. char name[NAMSIZ];
  53. char mode[8];
  54. char uid[8];
  55. char gid[8];
  56. char size[12];
  57. char mtime[12];
  58. char chksum[8];
  59. char linkflag;
  60. char linkname[NAMSIZ];
  61. char magic[8];
  62. char uname[TUNMLEN];
  63. char gname[TGNMLEN];
  64. char devmajor[8];
  65. char devminor[8];
  66. } header;
  67. };
  68. /* The magic field is filled with this if uname and gname are valid. */
  69. #define TMAGIC "ustar" /* 5 chars and a null */
  70. #define GNUTMAGIC "ustar " /* 7 chars and a null */