contrib/libarchive/tar/bsdtar.h

   1 /*-
   2  * Copyright (c) 2003-2007 Tim Kientzle
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD$
  26  */
  27
  28 #include "bsdtar_platform.h"
  29 #include <stdio.h>
  30
  31 #define DEFAULT_BYTES_PER_BLOCK (20*512)
  32 #define ENV_READER_OPTIONS      "TAR_READER_OPTIONS"
  33 #define ENV_WRITER_OPTIONS      "TAR_WRITER_OPTIONS"
  34 #define IGNORE_WRONG_MODULE_NAME "__ignore_wrong_module_name__,"
  35
  36 struct creation_set;
  37 /*
  38  * The internal state for the "bsdtar" program.
  39  *
  40  * Keeping all of the state in a structure like this simplifies memory
  41  * leak testing (at exit, anything left on the heap is suspect).  A
  42  * pointer to this structure is passed to most bsdtar internal
  43  * functions.
  44  */
  45 struct bsdtar {
  46         /* Options */
  47         const char       *filename; /* -f filename */
  48         char             *pending_chdir; /* -C dir */
  49         const char       *names_from_file; /* -T file */
  50         int               bytes_per_block; /* -b block_size */
  51         int               bytes_in_last_block; /* See -b handling. */
  52         int               verbose;   /* -v */
  53         int               extract_flags; /* Flags for extract operation */
  54         int               readdisk_flags; /* Flags for read disk operation */
  55         int               strip_components; /* Remove this many leading dirs */
  56         int               gid;  /* --gid */
  57         const char       *gname; /* --gname */
  58         int               uid;  /* --uid */
  59         const char       *uname; /* --uname */
  60         const char       *passphrase; /* --passphrase */
  61         char              mode; /* Program mode: 'c', 't', 'r', 'u', 'x' */
  62         char              symlink_mode; /* H or L, per BSD conventions */
  63         char              option_absolute_paths; /* -P */
  64         char              option_chroot; /* --chroot */
  65         char              option_fast_read; /* --fast-read */
  66         const char       *option_options; /* --options */
  67         char              option_ignore_zeros; /* --ignore-zeros */
  68         char              option_interactive; /* -w */
  69         char              option_no_owner; /* -o */
  70         char              option_no_subdirs; /* -n */
  71         char              option_numeric_owner; /* --numeric-owner */
  72         char              option_null; /* --null */
  73         char              option_stdout; /* -O */
  74         char              option_totals; /* --totals */
  75         char              option_unlink_first; /* -U */
  76         char              option_warn_links; /* --check-links */
  77         char              day_first; /* show day before month in -tv output */
  78         struct creation_set *cset;
  79
  80         /* Option parser state */
  81         int               getopt_state;
  82         char             *getopt_word;
  83
  84         /* If >= 0, then close this when done. */
  85         int               fd;
  86
  87         /* Miscellaneous state information */
  88         int               argc;
  89         char            **argv;
  90         const char       *argument;
  91         size_t            gs_width; /* For 'list_item' in read.c */
  92         size_t            u_width; /* for 'list_item' in read.c */
  93         uid_t             user_uid; /* UID running this program */
  94         int               return_value; /* Value returned by main() */
  95         char              warned_lead_slash; /* Already displayed warning */
  96         char              next_line_is_dir; /* Used for -C parsing in -cT */
  97
  98         /*
  99          * Data for various subsystems.  Full definitions are located in
 100          * the file where they are used.
 101          */
 102         struct archive          *diskreader;    /* for write.c */
 103         struct archive_entry_linkresolver *resolver; /* for write.c */
 104         struct archive_dir      *archive_dir;   /* for write.c */
 105         struct name_cache       *gname_cache;   /* for write.c */
 106         char                    *buff;          /* for write.c */
 107         size_t                   buff_size;     /* for write.c */
 108         int                      first_fs;      /* for write.c */
 109         struct archive          *matching;      /* for matching.c */
 110         struct security         *security;      /* for read.c */
 111         struct name_cache       *uname_cache;   /* for write.c */
 112         struct siginfo_data     *siginfo;       /* for siginfo.c */
 113         struct substitution     *substitution;  /* for subst.c */
 114         char                    *ppbuff;        /* for util.c */
 115 };
 116
 117 /* Fake short equivalents for long options that otherwise lack them. */
 118 enum {
 119         OPTION_B64ENCODE = 1,
 120         OPTION_CHECK_LINKS,
 121         OPTION_CHROOT,
 122         OPTION_CLEAR_NOCHANGE_FFLAGS,
 123         OPTION_DISABLE_COPYFILE,
 124         OPTION_EXCLUDE,
 125         OPTION_FORMAT,
 126         OPTION_GID,
 127         OPTION_GNAME,
 128         OPTION_GRZIP,
 129         OPTION_HELP,
 130         OPTION_HFS_COMPRESSION,
 131         OPTION_IGNORE_ZEROS,
 132         OPTION_INCLUDE,
 133         OPTION_KEEP_NEWER_FILES,
 134         OPTION_LRZIP,
 135         OPTION_LZ4,
 136         OPTION_LZIP,
 137         OPTION_LZMA,
 138         OPTION_LZOP,
 139         OPTION_NEWER_CTIME,
 140         OPTION_NEWER_CTIME_THAN,
 141         OPTION_NEWER_MTIME,
 142         OPTION_NEWER_MTIME_THAN,
 143         OPTION_NODUMP,
 144         OPTION_NOPRESERVE_HFS_COMPRESSION,
 145         OPTION_NO_SAME_OWNER,
 146         OPTION_NO_SAME_PERMISSIONS,
 147         OPTION_NO_XATTR,
 148         OPTION_NULL,
 149         OPTION_NUMERIC_OWNER,
 150         OPTION_OLDER_CTIME,
 151         OPTION_OLDER_CTIME_THAN,
 152         OPTION_OLDER_MTIME,
 153         OPTION_OLDER_MTIME_THAN,
 154         OPTION_ONE_FILE_SYSTEM,
 155         OPTION_OPTIONS,
 156         OPTION_PASSPHRASE,
 157         OPTION_POSIX,
 158         OPTION_SAME_OWNER,
 159         OPTION_STRIP_COMPONENTS,
 160         OPTION_TOTALS,
 161         OPTION_UID,
 162         OPTION_UNAME,
 163         OPTION_USE_COMPRESS_PROGRAM,
 164         OPTION_UUENCODE,
 165         OPTION_VERSION
 166 };
 167
 168 int     bsdtar_getopt(struct bsdtar *);
 169 void    do_chdir(struct bsdtar *);
 170 int     edit_pathname(struct bsdtar *, struct archive_entry *);
 171 int     need_report(void);
 172 int     pathcmp(const char *a, const char *b);
 173 void    safe_fprintf(FILE *, const char *fmt, ...);
 174 void    set_chdir(struct bsdtar *, const char *newdir);
 175 const char *tar_i64toa(int64_t);
 176 void    tar_mode_c(struct bsdtar *bsdtar);
 177 void    tar_mode_r(struct bsdtar *bsdtar);
 178 void    tar_mode_t(struct bsdtar *bsdtar);
 179 void    tar_mode_u(struct bsdtar *bsdtar);
 180 void    tar_mode_x(struct bsdtar *bsdtar);
 181 void    usage(void);
 182 int     yes(const char *fmt, ...);
 183
 184 #if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H)
 185 void    add_substitution(struct bsdtar *, const char *);
 186 int     apply_substitution(struct bsdtar *, const char *, char **, int, int);
 187 void    cleanup_substitution(struct bsdtar *);
 188 #endif
 189
 190 void            cset_add_filter(struct creation_set *, const char *);
 191 void            cset_add_filter_program(struct creation_set *, const char *);
 192 int             cset_auto_compress(struct creation_set *, const char *);
 193 void            cset_free(struct creation_set *);
 194 const char *    cset_get_format(struct creation_set *);
 195 struct creation_set *cset_new(void);
 196 int             cset_read_support_filter_program(struct creation_set *,
 197                     struct archive *);
 198 void            cset_set_format(struct creation_set *, const char *);
 199 int             cset_write_add_filters(struct creation_set *,
 200                     struct archive *, const void **);
 201
 202 const char * passphrase_callback(struct archive *, void *);
 203 void         passphrase_free(char *);
 204 void    list_item_verbose(struct bsdtar *, FILE *,
 205                     struct archive_entry *);