136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/*
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* Copyright (c) Ian F. Darwin 1986-1995.
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* Software written by Ian F. Darwin and others;
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* maintained 1995-present by Christos Zoulas and others.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Header file for public domain tar (tape archive) program.
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*
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* @(#)tar.h 1.20 86/10/29 Public Domain.
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*
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* Created 25 August 1985 by John Gilmore, ihnp4!hoptoad!gnu.
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*
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* $File: tar.h,v 1.11 2007/01/16 14:56:45 ljt Exp $ # checkin only
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*/
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/*
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* Kludge for handling systems that cannot cope with multiple
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* external definitions of a variable. In ONE routine (tar.c),
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* we #define TAR_EXTERN to null; here, we set it to "extern" if
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* it is not already set.
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*/
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#ifndef TAR_EXTERN
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#define TAR_EXTERN extern
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#endif
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/*
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* Header block on tape.
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*
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* I'm going to use traditional DP naming conventions here.
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* A "block" is a big chunk of stuff that we do I/O on.
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* A "record" is a piece of info that we care about.
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* Typically many "record"s fit into a "block".
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*/
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#define RECORDSIZE 512
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#define NAMSIZ 100
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#define TUNMLEN 32
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#define TGNMLEN 32
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union record {
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char charptr[RECORDSIZE];
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struct header {
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char name[NAMSIZ];
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char mode[8];
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char uid[8];
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char gid[8];
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char size[12];
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char mtime[12];
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char chksum[8];
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char linkflag;
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char linkname[NAMSIZ];
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char magic[8];
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char uname[TUNMLEN];
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char gname[TGNMLEN];
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char devmajor[8];
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char devminor[8];
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} header;
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};
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/* The checksum field is filled with this while the checksum is computed. */
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#define CHKBLANKS " " /* 8 blanks, no null */
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/* The magic field is filled with this if uname and gname are valid. */
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#define TMAGIC "ustar" /* 5 chars and a null */
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#define GNUTMAGIC "ustar " /* 7 chars and a null */
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/* The linkflag defines the type of file */
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#define LF_OLDNORMAL '\0' /* Normal disk file, Unix compat */
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#define LF_NORMAL '0' /* Normal disk file */
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#define LF_LINK '1' /* Link to previously dumped file */
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#define LF_SYMLINK '2' /* Symbolic link */
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#define LF_CHR '3' /* Character special file */
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#define LF_BLK '4' /* Block special file */
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#define LF_DIR '5' /* Directory */
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#define LF_FIFO '6' /* FIFO special file */
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#define LF_CONTIG '7' /* Contiguous file */
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/* Further link types may be defined later. */
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/*
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* Exit codes from the "tar" program
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*/
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#define EX_SUCCESS 0 /* success! */
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#define EX_ARGSBAD 1 /* invalid args */
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#define EX_BADFILE 2 /* invalid filename */
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#define EX_BADARCH 3 /* bad archive */
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#define EX_SYSTEM 4 /* system gave unexpected error */
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/*
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* Structure for keeping track of filenames and lists thereof.
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*/
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struct name {
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struct name *next;
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short length;
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char found;
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char name[NAMSIZ+1];
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};
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/*
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*
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* Due to the next struct declaration, each routine that includes
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* "tar.h" must also include <sys/types.h>. I tried to make it automatic,
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* but System V has no defines in <sys/types.h>, so there is no way of
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* knowing when it has been included. In addition, it cannot be included
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* twice, but must be included exactly once. Argghh!
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*
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* Thanks, typedef. Thanks, USG.
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*/
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struct link {
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struct link *next;
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dev_t dev;
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ino_t ino;
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short linkcount;
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char name[NAMSIZ+1];
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};
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