/* Declarations for tar archives.
Copyright (C) 1988, 1992, 1993 Free Software Foundation
This file is part of GNU Tar.
GNU Tar is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
GNU Tar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Tar; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* major() and minor() macros (among other things) defined here for hpux */
* Kludge for handling systems that can't cope with multiple
* external definitions of a variable. In ONE routine (tar.c),
* we #define TAR_EXTERN to null; here, we set it to "extern" if
#define TAR_EXTERN extern
* I'm going to use traditional DP naming conventions here.
* A "block" is a big chunk of stuff that we do I/O on.
* A "record" is a piece of info that we care about.
* Typically many "record"s fit into a "block".
#define SPARSE_EXT_HDR 21
char charptr
[RECORDSIZE
];
char arch_linkname
[NAMSIZ
];
/* these following fields were added by JF for gnu */
/* and are NOT standard */
struct sparse sp
[SPARSE_IN_HDR
];
char realsize
[12]; /* true size of the sparse file */
/* char ending_blanks[12];*//* number of nulls at the
end of the file, if any */
/* The checksum field is filled with this while the checksum is computed. */
#define CHKBLANKS " " /* 8 blanks, no null */
/* The magic field is filled with this if uname and gname are valid. */
#define TMAGIC "ustar " /* 7 chars and a null */
/* The linkflag defines the type of file */
#define LF_OLDNORMAL '\0' /* Normal disk file, Unix compat */
#define LF_NORMAL '0' /* Normal disk file */
#define LF_LINK '1' /* Link to previously dumped file */
#define LF_SYMLINK '2' /* Symbolic link */
#define LF_CHR '3' /* Character special file */
#define LF_BLK '4' /* Block special file */
#define LF_DIR '5' /* Directory */
#define LF_FIFO '6' /* FIFO special file */
#define LF_CONTIG '7' /* Contiguous file */
/* Further link types may be defined later. */
/* Note that the standards committee allows only capital A through
capital Z for user-defined expansion. This means that defining something
as, say '8' is a *bad* idea. */
#define LF_DUMPDIR 'D' /* This is a dir entry that contains
the names of files that were in
the dir at the time the dump
#define LF_LONGLINK 'K' /* Identifies the NEXT file on the tape
as having a long linkname */
#define LF_LONGNAME 'L' /* Identifies the NEXT file on the tape
as having a long name. */
#define LF_MULTIVOL 'M' /* This is the continuation
of a file that began on another
#define LF_NAMES 'N' /* For storing filenames that didn't
#define LF_SPARSE 'S' /* This is for sparse files */
#define LF_VOLHDR 'V' /* This file is a tape/volume header */
/* Ignore it on extraction */
* Exit codes from the "tar" program
#define EX_SUCCESS 0 /* success! */
#define EX_ARGSBAD 1 /* invalid args */
#define EX_BADFILE 2 /* invalid filename */
#define EX_BADARCH 3 /* bad archive */
#define EX_SYSTEM 4 /* system gave unexpected error */
#define EX_BADVOL 5 /* Special error code means
Tape volume doesn't match the one
specified on the command line */
TAR_EXTERN
union record
*ar_block
; /* Start of block of archive */
TAR_EXTERN
union record
*ar_record
; /* Current record of archive */
TAR_EXTERN
union record
*ar_last
; /* Last+1 record of archive block */
TAR_EXTERN
char ar_reading
; /* 0 writing, !0 reading archive */
TAR_EXTERN
int blocking
; /* Size of each block, in records */
TAR_EXTERN
int blocksize
; /* Size of each block, in bytes */
TAR_EXTERN
char *info_script
; /* Script to run at end of each tape change */
TAR_EXTERN
char *name_file
; /* File containing names to work on */
TAR_EXTERN
char filename_terminator
; /* \n or \0. */
TAR_EXTERN
char *tar
; /* Name of this program */
TAR_EXTERN
struct sp_array
*sparsearray
; /* Pointer to the start of the scratch space */
TAR_EXTERN
int sp_array_size
; /* Initial size of the sparsearray */
TAR_EXTERN
int tot_written
; /* Total written to output */
TAR_EXTERN
struct re_pattern_buffer
*label_pattern
; /* compiled regex for extract label */
TAR_EXTERN
char **ar_files
; /* list of tape drive names */
TAR_EXTERN
int n_ar_files
; /* number of tape drive names */
TAR_EXTERN
int cur_ar_file
; /* tape drive currently being used */
TAR_EXTERN
int ar_files_len
; /* malloced size of ar_files */
TAR_EXTERN
char *current_file_name
, *current_link_name
;
* Flags from the command line
#define CMD_CAT 1 /* -A */
#define CMD_CREATE 2 /* -c */
#define CMD_DIFF 3 /* -d */
#define CMD_APPEND 4 /* -r */
#define CMD_LIST 5 /* -t */
#define CMD_UPDATE 6 /* -u */
#define CMD_EXTRACT 7 /* -x */
#define CMD_DELETE 8 /* -D */
#define CMD_VERSION 9 /* --version */
TAR_EXTERN
int f_reblock
; /* -B */
TAR_EXTERN
char f_dironly
; /* -D */
TAR_EXTERN
int f_run_script_at_end
; /* -F */
TAR_EXTERN
int f_gnudump
; /* -G */
TAR_EXTERN
int f_follow_links
; /* -h */
TAR_EXTERN
int f_ignorez
; /* -i */
TAR_EXTERN
int f_keep
; /* -k */
TAR_EXTERN
int f_startfile
; /* -K */
TAR_EXTERN
int f_local_filesys
; /* -l */
TAR_EXTERN
int tape_length
; /* -L */
TAR_EXTERN
int f_modified
; /* -m */
TAR_EXTERN
int f_multivol
; /* -M */
TAR_EXTERN
int f_new_files
; /* -N */
TAR_EXTERN
int f_oldarch
; /* -o */
TAR_EXTERN
int f_exstdout
; /* -O */
TAR_EXTERN
int f_use_protection
;/* -p */
TAR_EXTERN
int f_absolute_paths
;/* -P */
TAR_EXTERN
int f_sayblock
; /* -R */
TAR_EXTERN
int f_sorted_names
; /* -s */
TAR_EXTERN
int f_sparse_files
; /* -S ... JK */
TAR_EXTERN
int f_namefile
; /* -T */
TAR_EXTERN
int f_verbose
; /* -v */
TAR_EXTERN
char *f_volhdr
; /* -V */
TAR_EXTERN
int f_confirm
; /* -w */
TAR_EXTERN
int f_verify
; /* -W */
TAR_EXTERN
int f_exclude
; /* -X */
TAR_EXTERN
char *f_compressprog
; /* -z and -Z */
TAR_EXTERN
int f_do_chown
; /* --do-chown */
TAR_EXTERN
int f_totals
; /* --totals */
TAR_EXTERN
int f_remove_files
; /* --remove-files */
TAR_EXTERN
int f_ignore_failed_read
; /* --ignore-failed-read */
TAR_EXTERN
int f_checkpoint
; /* --checkpoint */
TAR_EXTERN
int f_show_omitted_dirs
; /* --show-omitted-dirs */
TAR_EXTERN
char *f_volno_file
; /* --volno-file */
TAR_EXTERN
int f_force_local
; /* --force-local */
TAR_EXTERN
int f_atime_preserve
;/* --atime-preserve */
TAR_EXTERN
int f_compress_block
; /* --compress-block */
* We default to Unix Standard format rather than 4.2BSD tar format.
* The code can actually produce all three:
* f_standard ANSI standard
* but we don't bother, since 4.2BSD can read ANSI standard format anyway.
* The only advantage to the "neither" option is that we can cmp our
* output to the output of 4.2BSD tar, for debugging.
#define f_standard (!f_oldarch)
* Structure for keeping track of filenames and lists thereof.
short length
; /* cached strlen(name) */
char found
; /* A matching file has been found */
char firstch
; /* First char is literally matched */
char regexp
; /* This name is a regexp, not literal */
char *change_dir
; /* JF set with the -C option */
char *dir_contents
; /* JF for f_gnudump */
char fake
; /* dummy entry */
TAR_EXTERN
struct name
*namelist
; /* Points to first name in list */
TAR_EXTERN
struct name
*namelast
; /* Points to last name in list */
TAR_EXTERN
int archive
; /* File descriptor for archive file */
TAR_EXTERN
int errors
; /* # of files in error */
TAR_EXTERN
char *gnu_dumpfile
;
TAR_EXTERN
char read_error_flag
;
* Declarations of functions available to the world.
union record
*findrec ();
union record
*endofrecs ();
#if defined (HAVE_VPRINTF) && __STDC__
void msg_perror (char *,...);