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- /* 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)
- any later version.
-
- 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. */
-
- #include "testpad.h"
-
- /* major() and minor() macros (among other things) defined here for hpux */
- #ifdef hpux
- #include <sys/mknod.h>
- #endif
-
- /*
- * 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
- * it is not already set.
- */
- #ifndef TAR_EXTERN
- #define TAR_EXTERN extern
- #endif
-
- /*
- * Header block on tape.
- *
- * 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 RECORDSIZE 512
- #define NAMSIZ 100
- #define TUNMLEN 32
- #define TGNMLEN 32
- #define SPARSE_EXT_HDR 21
- #define SPARSE_IN_HDR 4
-
- struct sparse
- {
- char offset[12];
- char numbytes[12];
- };
-
- struct sp_array
- {
- int offset;
- int numbytes;
- };
-
- union record
- {
- char charptr[RECORDSIZE];
- struct header
- {
- char arch_name[NAMSIZ];
- char mode[8];
- char uid[8];
- char gid[8];
- char size[12];
- char mtime[12];
- char chksum[8];
- char linkflag;
- char arch_linkname[NAMSIZ];
- char magic[8];
- char uname[TUNMLEN];
- char gname[TGNMLEN];
- char devmajor[8];
- char devminor[8];
- /* these following fields were added by JF for gnu */
- /* and are NOT standard */
- char atime[12];
- char ctime[12];
- char offset[12];
- char longnames[4];
- #ifdef NEEDPAD
- char pad;
- #endif
- struct sparse sp[SPARSE_IN_HDR];
- char isextended;
- char realsize[12]; /* true size of the sparse file */
- /* char ending_blanks[12];*//* number of nulls at the
- end of the file, if any */
- }
- header;
- struct extended_header
- {
- struct sparse sp[21];
- char isextended;
- }
- ext_hdr;
- };
-
- /* 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
- was made */
- #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
- volume */
- #define LF_NAMES 'N' /* For storing filenames that didn't
- fit in 100 characters */
- #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 */
-
- /*
- * Global variables
- */
- 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
- */
- TAR_EXTERN int cmd_mode;
- #define CMD_NONE 0
- #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 */
- #if 0
- TAR_EXTERN char f_dironly; /* -D */
- #endif
- 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
- * f_oldarch V7
- * neither 4.2BSD
- * 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.
- */
- struct name
- {
- struct name *next;
- 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 */
- char name[1];
- };
-
- 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;
-
- /*
- * Error recovery stuff
- */
- TAR_EXTERN char read_error_flag;
-
-
- /*
- * Declarations of functions available to the world.
- */
- union record *findrec ();
- void userec ();
- union record *endofrecs ();
- void anno ();
-
- #if defined (HAVE_VPRINTF) && __STDC__
- void msg (char *,...);
- void msg_perror (char *,...);
- #else
- void msg ();
- void msg_perror ();
- #endif
-