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Diffstat (limited to 'gnu/usr.bin/tar/tar.h')
| -rw-r--r-- | gnu/usr.bin/tar/tar.h | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/gnu/usr.bin/tar/tar.h b/gnu/usr.bin/tar/tar.h new file mode 100644 index 0000000..c3fec78 --- /dev/null +++ b/gnu/usr.bin/tar/tar.h @@ -0,0 +1,291 @@ +/* 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. */ + +/* 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 |
