- {
- 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 int f_compress; /* -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 */
-
-/*
- * 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
+{
+ off_t offset;
+ size_t numbytes;
+};
+
+struct tar_stat_info
+{
+ char *orig_file_name; /* name of file read from the archive header */
+ char *file_name; /* name of file for the current archive entry
+ after being normalized. */
+ bool had_trailing_slash; /* true if the current archive entry had a
+ trailing slash before it was normalized. */
+ char *link_name; /* name of link for the current archive entry. */
+
+ char *uname; /* user name of owner */
+ char *gname; /* group name of owner */
+ struct stat stat; /* regular filesystem stat */
+
+ /* STAT doesn't always have access, data modification, and status
+ change times in a convenient form, so store them separately. */
+ struct timespec atime;
+ struct timespec mtime;
+ struct timespec ctime;
+
+ off_t archive_file_size; /* Size of file as stored in the archive.
+ Equals stat.st_size for non-sparse files */
+
+ bool is_sparse; /* Is the file sparse */
+
+ /* For sparse files: */
+ size_t sparse_map_avail; /* Index to the first unused element in
+ sparse_map array. Zero if the file is
+ not sparse */
+ size_t sparse_map_size; /* Size of the sparse map */
+ struct sp_array *sparse_map;
+
+ /* For dumpdirs */
+ bool is_dumpdir; /* Is the member a dumpdir? */
+ bool skipped; /* The member contents is already read
+ (for GNUTYPE_DUMPDIR) */
+ char *dumpdir; /* Contents of the dump directory */
+};
+
+union block
+{
+ char buffer[BLOCKSIZE];
+ struct posix_header header;
+ struct star_header star_header;
+ struct oldgnu_header oldgnu_header;
+ struct sparse_header sparse_header;
+ struct star_in_header star_in_header;
+ struct star_ext_header star_ext_header;
+};
+
+