Tizen 2.1 base

1 files changed, 738 insertions, 0 deletions

diff --git a/src/common.h b/src/common.h
new file mode 100644
index 0000000..6dd1abd
--- /dev/null
+++ b/src/common.h
@@ -0,0 +1,738 @@
+/* Common declarations for the tar program.
+
+   Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
+   2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Declare the GNU tar archive format.  */
+#include "tar.h"
+
+/* The checksum field is filled with this while the checksum is computed.  */
+#define CHKBLANKS	"        "	/* 8 blanks, no null */
+
+/* Some constants from POSIX are given names.  */
+#define NAME_FIELD_SIZE   100
+#define PREFIX_FIELD_SIZE 155
+#define UNAME_FIELD_SIZE   32
+#define GNAME_FIELD_SIZE   32
+
+
+
+/* Some various global definitions.  */
+
+/* Name of file to use for interacting with user.  */
+
+/* GLOBAL is defined to empty in tar.c only, and left alone in other *.c
+   modules.  Here, we merely set it to "extern" if it is not already set.
+   GNU tar does depend on the system loader to preset all GLOBAL variables to
+   neutral (or zero) values, explicit initialization is usually not done.  */
+#ifndef GLOBAL
+# define GLOBAL extern
+#endif
+
+#define TAREXIT_SUCCESS PAXEXIT_SUCCESS
+#define TAREXIT_DIFFERS PAXEXIT_DIFFERS
+#define TAREXIT_FAILURE PAXEXIT_FAILURE
+
+
+#include "arith.h"
+#include <backupfile.h>
+#include <exclude.h>
+#include <full-write.h>
+#include <modechange.h>
+#include <quote.h>
+#include <safe-read.h>
+#include <stat-time.h>
+#include <timespec.h>
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+#include <obstack.h>
+
+#include <paxlib.h>
+
+/* Log base 2 of common values.  */
+#define LG_8 3
+#define LG_64 6
+#define LG_256 8
+
+/* Information gleaned from the command line.  */
+
+/* Name of this program.  */
+GLOBAL const char *program_name;
+
+/* Main command option.  */
+
+enum subcommand
+{
+  UNKNOWN_SUBCOMMAND,		/* none of the following */
+  APPEND_SUBCOMMAND,		/* -r */
+  CAT_SUBCOMMAND,		/* -A */
+  CREATE_SUBCOMMAND,		/* -c */
+  DELETE_SUBCOMMAND,		/* -D */
+  DIFF_SUBCOMMAND,		/* -d */
+  EXTRACT_SUBCOMMAND,		/* -x */
+  LIST_SUBCOMMAND,		/* -t */
+  UPDATE_SUBCOMMAND		/* -u */
+};
+
+GLOBAL enum subcommand subcommand_option;
+
+/* Selected format for output archive.  */
+GLOBAL enum archive_format archive_format;
+
+/* Either NL or NUL, as decided by the --null option.  */
+GLOBAL char filename_terminator;
+
+/* Size of each record, once in blocks, once in bytes.  Those two variables
+   are always related, the second being BLOCKSIZE times the first.  They do
+   not have _option in their name, even if their values is derived from
+   option decoding, as these are especially important in tar.  */
+GLOBAL int blocking_factor;
+GLOBAL size_t record_size;
+
+GLOBAL bool absolute_names_option;
+
+/* Display file times in UTC */
+GLOBAL bool utc_option;
+
+/* This variable tells how to interpret newer_mtime_option, below.  If zero,
+   files get archived if their mtime is not less than newer_mtime_option.
+   If nonzero, files get archived if *either* their ctime or mtime is not less
+   than newer_mtime_option.  */
+GLOBAL int after_date_option;
+
+enum atime_preserve
+{
+  no_atime_preserve,
+  replace_atime_preserve,
+  system_atime_preserve
+};
+GLOBAL enum atime_preserve atime_preserve_option;
+
+GLOBAL bool backup_option;
+
+/* Type of backups being made.  */
+GLOBAL enum backup_type backup_type;
+
+GLOBAL bool block_number_option;
+
+GLOBAL unsigned checkpoint_option;
+
+enum checkpoint_style
+  {
+    checkpoint_text,
+    checkpoint_dot
+  };
+
+GLOBAL enum checkpoint_style checkpoint_style;
+
+/* Specified name of compression program, or "gzip" as implied by -z.  */
+GLOBAL const char *use_compress_program_option;
+
+GLOBAL bool dereference_option;
+
+/* Print a message if not all links are dumped */
+GLOBAL int check_links_option;
+
+/* Patterns that match file names to be excluded.  */
+GLOBAL struct exclude *excluded;
+
+enum exclusion_tag_type
+  {
+    exclusion_tag_none,
+     /* Exclude the directory contents, but preserve the directory
+	itself and the exclusion tag file */
+    exclusion_tag_contents,
+    /* Exclude everything below the directory, preserving the directory
+       itself */
+    exclusion_tag_under,
+    /* Exclude entire directory  */
+    exclusion_tag_all,
+  };
+
+/* Specified value to be put into tar file in place of stat () results, or
+   just -1 if such an override should not take place.  */
+GLOBAL gid_t group_option;
+
+GLOBAL bool ignore_failed_read_option;
+
+GLOBAL bool ignore_zeros_option;
+
+GLOBAL bool incremental_option;
+
+/* Specified name of script to run at end of each tape change.  */
+GLOBAL const char *info_script_option;
+
+GLOBAL bool interactive_option;
+
+/* If nonzero, extract only Nth occurrence of each named file */
+GLOBAL uintmax_t occurrence_option;
+
+enum old_files
+{
+  DEFAULT_OLD_FILES,          /* default */
+  NO_OVERWRITE_DIR_OLD_FILES, /* --no-overwrite-dir */
+  OVERWRITE_OLD_FILES,        /* --overwrite */
+  UNLINK_FIRST_OLD_FILES,     /* --unlink-first */
+  KEEP_OLD_FILES,             /* --keep-old-files */
+  KEEP_NEWER_FILES	      /* --keep-newer-files */
+};
+GLOBAL enum old_files old_files_option;
+
+/* Specified file name for incremental list.  */
+GLOBAL const char *listed_incremental_option;
+
+/* Specified mode change string.  */
+GLOBAL struct mode_change *mode_option;
+
+/* Initial umask, if needed for mode change string.  */
+GLOBAL mode_t initial_umask;
+
+GLOBAL bool multi_volume_option;
+
+/* Specified threshold date and time.  Files having an older time stamp
+   do not get archived (also see after_date_option above).  */
+GLOBAL struct timespec newer_mtime_option;
+
+/* If true, override actual mtime (see below) */
+GLOBAL bool set_mtime_option;
+/* Value to be put in mtime header field instead of the actual mtime */
+GLOBAL struct timespec mtime_option;
+
+/* Return true if newer_mtime_option is initialized.  */
+#define NEWER_OPTION_INITIALIZED(opt) (0 <= (opt).tv_nsec)
+
+/* Return true if the struct stat ST's M time is less than
+   newer_mtime_option.  */
+#define OLDER_STAT_TIME(st, m) \
+  (timespec_cmp (get_stat_##m##time (&(st)), newer_mtime_option) < 0)
+
+/* Likewise, for struct tar_stat_info ST.  */
+#define OLDER_TAR_STAT_TIME(st, m) \
+  (timespec_cmp ((st).m##time, newer_mtime_option) < 0)
+
+/* Zero if there is no recursion, otherwise FNM_LEADING_DIR.  */
+GLOBAL int recursion_option;
+
+GLOBAL bool numeric_owner_option;
+
+GLOBAL bool one_file_system_option;
+
+/* Specified value to be put into tar file in place of stat () results, or
+   just -1 if such an override should not take place.  */
+GLOBAL uid_t owner_option;
+
+GLOBAL bool recursive_unlink_option;
+
+GLOBAL bool read_full_records_option;
+
+GLOBAL bool remove_files_option;
+
+/* Specified rmt command.  */
+GLOBAL const char *rmt_command_option;
+
+/* Specified remote shell command.  */
+GLOBAL const char *rsh_command_option;
+
+GLOBAL bool same_order_option;
+
+/* If positive, preserve ownership when extracting.  */
+GLOBAL int same_owner_option;
+
+/* If positive, preserve permissions when extracting.  */
+GLOBAL int same_permissions_option;
+
+/* When set, strip the given number of file name components from the file name
+   before extracting */
+GLOBAL size_t strip_name_components;
+
+GLOBAL bool show_omitted_dirs_option;
+
+GLOBAL bool sparse_option;
+GLOBAL unsigned tar_sparse_major;
+GLOBAL unsigned tar_sparse_minor;
+
+GLOBAL bool starting_file_option;
+
+/* Specified maximum byte length of each tape volume (multiple of 1024).  */
+GLOBAL tarlong tape_length_option;
+
+GLOBAL bool to_stdout_option;
+
+GLOBAL bool totals_option;
+
+GLOBAL bool touch_option;
+
+GLOBAL char *to_command_option;
+GLOBAL bool ignore_command_error_option;
+
+/* Restrict some potentially harmful tar options */
+GLOBAL bool restrict_option;
+
+/* Return true if the extracted files are not being written to disk */
+#define EXTRACT_OVER_PIPE (to_stdout_option || to_command_option)
+
+/* Count how many times the option has been set, multiple setting yields
+   more verbose behavior.  Value 0 means no verbosity, 1 means file name
+   only, 2 means file name and all attributes.  More than 2 is just like 2.  */
+GLOBAL int verbose_option;
+
+GLOBAL bool verify_option;
+
+/* Specified name of file containing the volume number.  */
+GLOBAL const char *volno_file_option;
+
+/* Specified value or pattern.  */
+GLOBAL const char *volume_label_option;
+
+/* Other global variables.  */
+
+/* File descriptor for archive file.  */
+GLOBAL int archive;
+
+/* Nonzero when outputting to /dev/null.  */
+GLOBAL bool dev_null_output;
+
+/* Timestamps: */
+GLOBAL struct timespec start_time;        /* when we started execution */
+GLOBAL struct timespec volume_start_time; /* when the current volume was
+					     opened*/
+GLOBAL struct timespec last_stat_time;    /* when the statistics was last
+					     computed */
+
+GLOBAL struct tar_stat_info current_stat_info;
+
+/* List of tape drive names, number of such tape drives, allocated number,
+   and current cursor in list.  */
+GLOBAL const char **archive_name_array;
+GLOBAL size_t archive_names;
+GLOBAL size_t allocated_archive_names;
+GLOBAL const char **archive_name_cursor;
+
+/* Output index file name.  */
+GLOBAL char const *index_file_name;
+
+/* Structure for keeping track of filenames and lists thereof.  */
+struct name
+  {
+    struct name *next;          /* Link to the next element */
+    int change_dir;		/* Number of the directory to change to.
+				   Set with the -C option. */
+    uintmax_t found_count;	/* number of times a matching file has
+				   been found */
+    int matching_flags;		/* this name is a regexp, not literal */
+    char const *dir_contents;	/* for incremental_option */
+
+    size_t length;		/* cached strlen(name) */
+    char name[1];
+  };
+
+/* Obnoxious test to see if dimwit is trying to dump the archive.  */
+GLOBAL dev_t ar_dev;
+GLOBAL ino_t ar_ino;
+
+GLOBAL bool seekable_archive;
+
+GLOBAL dev_t root_device;
+
+/* Unquote filenames */
+GLOBAL bool unquote_option;
+
+GLOBAL bool test_label_option; /* Test archive volume label and exit */
+
+/* Show file or archive names after transformation.
+   In particular, when creating archive in verbose mode, list member names
+   as stored in the archive */
+GLOBAL bool show_transformed_names_option;
+
+/* Delay setting modification times and permissions of extracted directories
+   until the end of extraction. This variable helps correctly restore directory
+   timestamps from archives with an unusual member order. It is automatically
+   set for incremental archives. */
+GLOBAL bool delay_directory_restore_option;
+
+/* Warn about implicit use of the wildcards in command line arguments.
+   (Default for tar prior to 1.15.91, but changed afterwards */
+GLOBAL bool warn_regex_usage;
+
+/* Declarations for each module.  */
+
+/* FIXME: compare.c should not directly handle the following variable,
+   instead, this should be done in buffer.c only.  */
+
+enum access_mode
+{
+  ACCESS_READ,
+  ACCESS_WRITE,
+  ACCESS_UPDATE
+};
+extern enum access_mode access_mode;
+
+/* Module buffer.c.  */
+
+extern FILE *stdlis;
+extern bool write_archive_to_stdout;
+extern char *volume_label;
+extern char *continued_file_name;
+extern uintmax_t continued_file_size;
+extern uintmax_t continued_file_offset;
+
+size_t available_space_after (union block *pointer);
+off_t current_block_ordinal (void);
+void close_archive (void);
+void closeout_volume_number (void);
+void compute_duration (void);
+union block *find_next_block (void);
+void flush_read (void);
+void flush_write (void);
+void flush_archive (void);
+void init_volume_number (void);
+void open_archive (enum access_mode mode);
+void print_total_stats (void);
+void reset_eof (void);
+void set_next_block_after (union block *block);
+void clear_read_error_count (void);
+void xclose (int fd);
+void archive_write_error (ssize_t status) __attribute__ ((noreturn));
+void archive_read_error (void);
+off_t seek_archive (off_t size);
+void set_start_time (void);
+
+void mv_begin (struct tar_stat_info *st);
+void mv_end (void);
+void mv_total_size (off_t size);
+void mv_size_left (off_t size);
+
+void buffer_write_global_xheader (void);
+
+/* Module create.c.  */
+
+enum dump_status
+  {
+    dump_status_ok,
+    dump_status_short,
+    dump_status_fail,
+    dump_status_not_implemented
+  };
+
+void add_exclusion_tag (const char *name, enum exclusion_tag_type type,
+			bool (*)(const char*));
+bool cachedir_file_p (const char *name);
+
+bool file_dumpable_p (struct tar_stat_info *st);
+void create_archive (void);
+void pad_archive (off_t size_left);
+void dump_file (const char *st, int top_level, dev_t parent_device);
+union block *start_header (struct tar_stat_info *st);
+void finish_header (struct tar_stat_info *st, union block *header,
+		    off_t block_ordinal);
+void simple_finish_header (union block *header);
+union block * write_extended (bool global, struct tar_stat_info *st,
+			      union block *old_header);
+union block *start_private_header (const char *name, size_t size);
+void write_eot (void);
+void check_links (void);
+
+#define GID_TO_CHARS(val, where) gid_to_chars (val, where, sizeof (where))
+#define MAJOR_TO_CHARS(val, where) major_to_chars (val, where, sizeof (where))
+#define MINOR_TO_CHARS(val, where) minor_to_chars (val, where, sizeof (where))
+#define MODE_TO_CHARS(val, where) mode_to_chars (val, where, sizeof (where))
+#define OFF_TO_CHARS(val, where) off_to_chars (val, where, sizeof (where))
+#define SIZE_TO_CHARS(val, where) size_to_chars (val, where, sizeof (where))
+#define TIME_TO_CHARS(val, where) time_to_chars (val, where, sizeof (where))
+#define UID_TO_CHARS(val, where) uid_to_chars (val, where, sizeof (where))
+#define UINTMAX_TO_CHARS(val, where) uintmax_to_chars (val, where, sizeof (where))
+#define UNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
+#define GNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
+
+bool gid_to_chars (gid_t gid, char *buf, size_t size);
+bool major_to_chars (major_t m, char *buf, size_t size);
+bool minor_to_chars (minor_t m, char *buf, size_t size);
+bool mode_to_chars (mode_t m, char *buf, size_t size);
+bool off_to_chars (off_t off, char *buf, size_t size);
+bool size_to_chars (size_t v, char *buf, size_t size);
+bool time_to_chars (time_t t, char *buf, size_t size);
+bool uid_to_chars (uid_t uid, char *buf, size_t size);
+bool uintmax_to_chars (uintmax_t v, char *buf, size_t size);
+void string_to_chars (char const *s, char *buf, size_t size);
+
+/* Module diffarch.c.  */
+
+extern bool now_verifying;
+
+void diff_archive (void);
+void diff_init (void);
+void verify_volume (void);
+
+/* Module extract.c.  */
+
+void extr_init (void);
+void extract_archive (void);
+void extract_finish (void);
+bool rename_directory (char *src, char *dst);
+
+/* Module delete.c.  */
+
+void delete_archive_members (void);
+
+/* Module incremen.c.  */
+
+char *get_directory_contents (char *dir_name, dev_t device);
+const char *append_incremental_renames (const char *dump);
+void read_directory_file (void);
+void write_directory_file (void);
+void purge_directory (char const *directory_name);
+void list_dumpdir (char *buffer, size_t size);
+void update_parent_directory (const char *name);
+
+size_t dumpdir_size (const char *p);
+bool is_dumpdir (struct tar_stat_info *stat_info);
+
+/* Module list.c.  */
+
+enum read_header
+{
+  HEADER_STILL_UNREAD,		/* for when read_header has not been called */
+  HEADER_SUCCESS,		/* header successfully read and checksummed */
+  HEADER_SUCCESS_EXTENDED,	/* likewise, but we got an extended header */
+  HEADER_ZERO_BLOCK,		/* zero block where header expected */
+  HEADER_END_OF_FILE,		/* true end of file while header expected */
+  HEADER_FAILURE		/* ill-formed header, or bad checksum */
+};
+
+extern union block *current_header;
+extern enum archive_format current_format;
+extern size_t recent_long_name_blocks;
+extern size_t recent_long_link_blocks;
+
+void decode_header (union block *header, struct tar_stat_info *stat_info,
+		    enum archive_format *format_pointer, int do_user_group);
+char const *tartime (struct timespec t, bool full_time);
+
+#define GID_FROM_HEADER(where) gid_from_header (where, sizeof (where))
+#define MAJOR_FROM_HEADER(where) major_from_header (where, sizeof (where))
+#define MINOR_FROM_HEADER(where) minor_from_header (where, sizeof (where))
+#define MODE_FROM_HEADER(where) mode_from_header (where, sizeof (where))
+#define OFF_FROM_HEADER(where) off_from_header (where, sizeof (where))
+#define SIZE_FROM_HEADER(where) size_from_header (where, sizeof (where))
+#define TIME_FROM_HEADER(where) time_from_header (where, sizeof (where))
+#define UID_FROM_HEADER(where) uid_from_header (where, sizeof (where))
+#define UINTMAX_FROM_HEADER(where) uintmax_from_header (where, sizeof (where))
+
+gid_t gid_from_header (const char *buf, size_t size);
+major_t major_from_header (const char *buf, size_t size);
+minor_t minor_from_header (const char *buf, size_t size);
+mode_t mode_from_header (const char *buf, size_t size);
+off_t off_from_header (const char *buf, size_t size);
+size_t size_from_header (const char *buf, size_t size);
+time_t time_from_header (const char *buf, size_t size);
+uid_t uid_from_header (const char *buf, size_t size);
+uintmax_t uintmax_from_header (const char * buf, size_t size);
+
+void list_archive (void);
+void print_for_mkdir (char *dirname, int length, mode_t mode);
+void print_header (struct tar_stat_info *st, off_t block_ordinal);
+void read_and (void (*do_something) (void));
+enum read_header read_header_primitive (bool raw_extended_headers,
+					struct tar_stat_info *info);
+enum read_header read_header (bool raw_extended_headers);
+enum read_header tar_checksum (union block *header, bool silent);
+void skip_file (off_t size);
+void skip_member (void);
+
+/* Module misc.c.  */
+
+void assign_string (char **dest, const char *src);
+char *quote_copy_string (const char *str);
+int unquote_string (char *str);
+
+void code_ns_fraction (int ns, char *p);
+char const *code_timespec (struct timespec ts, char *sbuf);
+enum { BILLION = 1000000000, LOG10_BILLION = 9 };
+enum { TIMESPEC_STRSIZE_BOUND =
+         UINTMAX_STRSIZE_BOUND + LOG10_BILLION + sizeof "-." - 1 };
+
+enum remove_option
+{
+  ORDINARY_REMOVE_OPTION,
+  RECURSIVE_REMOVE_OPTION,
+
+  /* FIXME: The following value is never used. It seems to be intended
+     as a placeholder for a hypothetical option that should instruct tar
+     to recursively remove subdirectories in purge_directory(),
+     as opposed to the functionality of --recursive-unlink
+     (RECURSIVE_REMOVE_OPTION value), which removes them in
+     prepare_to_extract() phase. However, with the addition of more
+     meta-info to the incremental dumps, this should become unnecessary */
+  WANT_DIRECTORY_REMOVE_OPTION
+};
+int remove_any_file (const char *file_name, enum remove_option option);
+bool maybe_backup_file (const char *file_name, bool this_is_the_archive);
+void undo_last_backup (void);
+
+int deref_stat (bool deref, char const *name, struct stat *buf);
+
+int chdir_arg (char const *dir);
+void chdir_do (int dir);
+
+void close_diag (char const *name);
+void open_diag (char const *name);
+void read_diag_details (char const *name, off_t offset, size_t size);
+void readlink_diag (char const *name);
+void savedir_diag (char const *name);
+void seek_diag_details (char const *name, off_t offset);
+void stat_diag (char const *name);
+void write_error_details (char const *name, size_t status, size_t size);
+void write_fatal (char const *name) __attribute__ ((noreturn));
+void write_fatal_details (char const *name, ssize_t status, size_t size)
+     __attribute__ ((noreturn));
+
+pid_t xfork (void);
+void xpipe (int fd[2]);
+
+void *page_aligned_alloc (void **ptr, size_t size);
+int set_file_atime (int fd, char const *file,
+		    struct timespec const timespec[2]);
+
+/* Module names.c.  */
+
+extern struct name *gnu_list_name;
+
+void gid_to_gname (gid_t gid, char **gname);
+int gname_to_gid (char const *gname, gid_t *pgid);
+void uid_to_uname (uid_t uid, char **uname);
+int uname_to_uid (char const *uname, uid_t *puid);
+
+void name_init (void);
+void name_add_name (const char *name, int matching_flags);
+void name_add_dir (const char *name);
+void name_term (void);
+const char *name_next (int change_dirs);
+void name_gather (void);
+struct name *addname (char const *string, int change_dir);
+bool name_match (const char *name);
+void names_notfound (void);
+void collect_and_sort_names (void);
+struct name *name_scan (const char *name);
+char *name_from_list (void);
+void blank_name_list (void);
+char *new_name (const char *dir_name, const char *name);
+size_t stripped_prefix_len (char const *file_name, size_t num);
+bool all_names_found (struct tar_stat_info *st);
+
+bool excluded_name (char const *name);
+
+void add_avoided_name (char const *name);
+bool is_avoided_name (char const *name);
+bool is_individual_file (char const *name);
+
+bool contains_dot_dot (char const *name);
+
+#define ISFOUND(c) ((occurrence_option == 0) ? (c)->found_count : \
+                    (c)->found_count == occurrence_option)
+#define WASFOUND(c) ((occurrence_option == 0) ? (c)->found_count : \
+                     (c)->found_count >= occurrence_option)
+
+/* Module tar.c.  */
+
+void usage (int);
+
+int confirm (const char *message_action, const char *name);
+void request_stdin (const char *option);
+
+void tar_stat_init (struct tar_stat_info *st);
+void tar_stat_destroy (struct tar_stat_info *st);
+void usage (int) __attribute__ ((noreturn));
+int tar_timespec_cmp (struct timespec a, struct timespec b);
+const char *archive_format_string (enum archive_format fmt);
+const char *subcommand_string (enum subcommand c);
+
+/* Module update.c.  */
+
+extern char *output_start;
+
+void update_archive (void);
+
+/* Module xheader.c.  */
+
+void xheader_init (struct xheader *xhdr);
+void xheader_decode (struct tar_stat_info *stat);
+void xheader_decode_global (struct xheader *xhdr);
+void xheader_store (char const *keyword, struct tar_stat_info *st,
+		    void const *data);
+void xheader_read (struct xheader *xhdr, union block *header, size_t size);
+void xheader_write (char type, char *name, struct xheader *xhdr);
+void xheader_write_global (struct xheader *xhdr);
+void xheader_finish (struct xheader *hdr);
+void xheader_destroy (struct xheader *hdr);
+char *xheader_xhdr_name (struct tar_stat_info *st);
+char *xheader_ghdr_name (void);
+void xheader_set_option (char *string);
+void xheader_string_begin (struct xheader *xhdr);
+void xheader_string_add (struct xheader *xhdr, char const *s);
+bool xheader_string_end (struct xheader *xhdr, char const *keyword);
+bool xheader_keyword_deleted_p (const char *kw);
+char *xheader_format_name (struct tar_stat_info *st, const char *fmt,
+			   size_t n);
+
+/* Module system.c */
+
+void sys_detect_dev_null_output (void);
+void sys_save_archive_dev_ino (void);
+void sys_drain_input_pipe (void);
+void sys_wait_for_child (pid_t);
+void sys_spawn_shell (void);
+bool sys_compare_uid (struct stat *a, struct stat *b);
+bool sys_compare_gid (struct stat *a, struct stat *b);
+bool sys_file_is_archive (struct tar_stat_info *p);
+bool sys_compare_links (struct stat *link_data, struct stat *stat_data);
+int sys_truncate (int fd);
+pid_t sys_child_open_for_compress (void);
+pid_t sys_child_open_for_uncompress (void);
+size_t sys_write_archive_buffer (void);
+bool sys_get_archive_stat (void);
+int sys_exec_command (char *file_name, int typechar, struct tar_stat_info *st);
+void sys_wait_command (void);
+int sys_exec_info_script (const char **archive_name, int volume_number);
+
+/* Module compare.c */
+void report_difference (struct tar_stat_info *st, const char *message, ...);
+
+/* Module sparse.c */
+bool sparse_member_p (struct tar_stat_info *st);
+bool sparse_fixup_header (struct tar_stat_info *st);
+enum dump_status sparse_dump_file (int, struct tar_stat_info *st);
+enum dump_status sparse_extract_file (int fd, struct tar_stat_info *st,
+				      off_t *size);
+enum dump_status sparse_skip_file (struct tar_stat_info *st);
+bool sparse_diff_file (int, struct tar_stat_info *st);
+
+/* Module utf8.c */
+bool string_ascii_p (const char *str);
+bool utf8_convert (bool to_utf, char const *input, char **output);
+
+/* Module transform.c */
+typedef enum
+  {
+    xform_regfile,
+    xform_link,
+    xform_symlink
+  } xform_type;
+
+void set_transform_expr (const char *expr);
+bool transform_name (char **pinput);
+bool transform_member_name (char **pinput, xform_type type);
+bool transform_name_fp (char **pinput, char *(*fun)(char *, void *), void *);