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    Annotation of /trunk/mkinitrd-magellan/busybox/include/unarchive.h

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    Revision 984 - (hide annotations) (download)
    Sun May 30 11:32:42 2010 UTC (14 years ago) by niro
    File MIME type: text/plain
    File size: 6160 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    1 niro 532 /* vi: set sw=4 ts=4: */
    2 niro 984 #ifndef UNARCHIVE_H
    3     #define UNARCHIVE_H 1
    4 niro 532
    5 niro 984 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
    6 niro 816
    7     typedef struct file_header_t {
    8 niro 532 char *name;
    9 niro 816 char *link_target;
    10     #if ENABLE_FEATURE_TAR_UNAME_GNAME
    11 niro 984 char *tar__uname;
    12     char *tar__gname;
    13 niro 816 #endif
    14 niro 532 off_t size;
    15     uid_t uid;
    16     gid_t gid;
    17     mode_t mode;
    18     time_t mtime;
    19     dev_t device;
    20     } file_header_t;
    21    
    22 niro 984 struct hardlinks_t;
    23    
    24 niro 816 typedef struct archive_handle_t {
    25 niro 984 /* Flags. 1st since it is most used member */
    26     unsigned ah_flags;
    27    
    28     /* The raw stream as read from disk or stdin */
    29     int src_fd;
    30    
    31 niro 816 /* Define if the header and data component should be processed */
    32     char FAST_FUNC (*filter)(struct archive_handle_t *);
    33 niro 984 /* List of files that have been accepted */
    34 niro 532 llist_t *accept;
    35     /* List of files that have been rejected */
    36     llist_t *reject;
    37     /* List of files that have successfully been worked on */
    38     llist_t *passed;
    39    
    40 niro 984 /* Currently processed file's header */
    41 niro 532 file_header_t *file_header;
    42    
    43 niro 816 /* Process the header component, e.g. tar -t */
    44     void FAST_FUNC (*action_header)(const file_header_t *);
    45 niro 532
    46 niro 816 /* Process the data component, e.g. extract to filesystem */
    47     void FAST_FUNC (*action_data)(struct archive_handle_t *);
    48 niro 532
    49 niro 984 /* Function that skips data */
    50     void FAST_FUNC (*seek)(int fd, off_t amount);
    51    
    52     /* Count processed bytes */
    53     off_t offset;
    54    
    55     /* Archiver specific. Can make it a union if it ever gets big */
    56     #if ENABLE_TAR || ENABLE_DPKG || ENABLE_DPKG_DEB
    57     smallint tar__end;
    58     # if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
    59     char* tar__longname;
    60     char* tar__linkname;
    61     # endif
    62     #endif
    63     #if ENABLE_CPIO || ENABLE_RPM2CPIO || ENABLE_RPM
    64     uoff_t cpio__blocks;
    65     struct hardlinks_t *cpio__hardlinks_to_create;
    66     struct hardlinks_t *cpio__created_hardlinks;
    67     #endif
    68 niro 816 #if ENABLE_DPKG || ENABLE_DPKG_DEB
    69 niro 984 /* Temporary storage */
    70     char *dpkg__buffer;
    71 niro 532 /* How to process any sub archive, e.g. get_header_tar_gz */
    72 niro 984 char FAST_FUNC (*dpkg__action_data_subarchive)(struct archive_handle_t *);
    73 niro 532 /* Contains the handle to a sub archive */
    74 niro 984 struct archive_handle_t *dpkg__sub_archive;
    75 niro 816 #endif
    76 niro 532 } archive_handle_t;
    77 niro 984 /* bits in ah_flags */
    78     #define ARCHIVE_RESTORE_DATE (1 << 0)
    79     #define ARCHIVE_CREATE_LEADING_DIRS (1 << 1)
    80     #define ARCHIVE_UNLINK_OLD (1 << 2)
    81     #define ARCHIVE_EXTRACT_QUIET (1 << 3)
    82     #define ARCHIVE_EXTRACT_NEWER (1 << 4)
    83     #define ARCHIVE_DONT_RESTORE_OWNER (1 << 5)
    84     #define ARCHIVE_DONT_RESTORE_PERM (1 << 6)
    85     #define ARCHIVE_NUMERIC_OWNER (1 << 7)
    86     #define ARCHIVE_O_TRUNC (1 << 8)
    87 niro 532
    88    
    89 niro 816 /* Info struct unpackers can fill out to inform users of thing like
    90     * timestamps of unpacked files */
    91     typedef struct unpack_info_t {
    92     time_t mtime;
    93     } unpack_info_t;
    94 niro 532
    95 niro 816 extern archive_handle_t *init_handle(void) FAST_FUNC;
    96 niro 532
    97 niro 816 extern char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC;
    98     extern char filter_accept_list(archive_handle_t *archive_handle) FAST_FUNC;
    99     extern char filter_accept_list_reassign(archive_handle_t *archive_handle) FAST_FUNC;
    100     extern char filter_accept_reject_list(archive_handle_t *archive_handle) FAST_FUNC;
    101 niro 532
    102 niro 816 extern void unpack_ar_archive(archive_handle_t *ar_archive) FAST_FUNC;
    103 niro 532
    104 niro 816 extern void data_skip(archive_handle_t *archive_handle) FAST_FUNC;
    105     extern void data_extract_all(archive_handle_t *archive_handle) FAST_FUNC;
    106     extern void data_extract_to_stdout(archive_handle_t *archive_handle) FAST_FUNC;
    107 niro 532
    108 niro 816 extern void header_skip(const file_header_t *file_header) FAST_FUNC;
    109     extern void header_list(const file_header_t *file_header) FAST_FUNC;
    110     extern void header_verbose_list(const file_header_t *file_header) FAST_FUNC;
    111 niro 532
    112 niro 816 extern char get_header_ar(archive_handle_t *archive_handle) FAST_FUNC;
    113     extern char get_header_cpio(archive_handle_t *archive_handle) FAST_FUNC;
    114     extern char get_header_tar(archive_handle_t *archive_handle) FAST_FUNC;
    115     extern char get_header_tar_gz(archive_handle_t *archive_handle) FAST_FUNC;
    116     extern char get_header_tar_bz2(archive_handle_t *archive_handle) FAST_FUNC;
    117     extern char get_header_tar_lzma(archive_handle_t *archive_handle) FAST_FUNC;
    118 niro 532
    119 niro 984 extern void seek_by_jump(int fd, off_t amount) FAST_FUNC;
    120     extern void seek_by_read(int fd, off_t amount) FAST_FUNC;
    121 niro 532
    122 niro 816 extern void data_align(archive_handle_t *archive_handle, unsigned boundary) FAST_FUNC;
    123     extern const llist_t *find_list_entry(const llist_t *list, const char *filename) FAST_FUNC;
    124     extern const llist_t *find_list_entry2(const llist_t *list, const char *filename) FAST_FUNC;
    125 niro 532
    126 niro 816 /* A bit of bunzip2 internals are exposed for compressed help support: */
    127     typedef struct bunzip_data bunzip_data;
    128     int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len) FAST_FUNC;
    129     int read_bunzip(bunzip_data *bd, char *outbuf, int len) FAST_FUNC;
    130     void dealloc_bunzip(bunzip_data *bd) FAST_FUNC;
    131 niro 532
    132     typedef struct inflate_unzip_result {
    133     off_t bytes_out;
    134     uint32_t crc;
    135     } inflate_unzip_result;
    136    
    137 niro 984 IF_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd) FAST_FUNC;
    138 niro 816 /* lzma unpacker takes .lzma stream from offset 0 */
    139 niro 984 IF_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd) FAST_FUNC;
    140 niro 816 /* the rest wants 2 first bytes already skipped by the caller */
    141 niro 984 IF_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC;
    142     IF_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC;
    143     IF_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC;
    144     IF_DESKTOP(long long) int unpack_Z_stream(int fd_in, int fd_out) FAST_FUNC;
    145 niro 816 /* wrapper which checks first two bytes to be "BZ" */
    146 niro 984 IF_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC;
    147 niro 532
    148 niro 816 int bbunpack(char **argv,
    149     char* (*make_new_name)(char *filename),
    150 niro 984 IF_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)) FAST_FUNC;
    151 niro 532
    152 niro 816 #if BB_MMU
    153     void open_transformer(int fd,
    154 niro 984 IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd)) FAST_FUNC;
    155 niro 816 #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transformer)
    156     #else
    157     void open_transformer(int src_fd, const char *transform_prog) FAST_FUNC;
    158     #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transform_prog)
    159 niro 532 #endif
    160 niro 816
    161 niro 984 POP_SAVED_FUNCTION_VISIBILITY
    162 niro 816
    163     #endif