| /* vi: set sw=4 ts=4: */ |
| #ifndef UNARCHIVE_H |
| #define UNARCHIVE_H 1 |
| |
| PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN |
| |
| typedef struct file_header_t { |
| char *name; |
| char *link_target; |
| #if ENABLE_FEATURE_TAR_UNAME_GNAME |
| char *tar__uname; |
| char *tar__gname; |
| #endif |
| off_t size; |
| uid_t uid; |
| gid_t gid; |
| mode_t mode; |
| time_t mtime; |
| dev_t device; |
| } file_header_t; |
| |
| struct hardlinks_t; |
| |
| typedef struct archive_handle_t { |
| /* Flags. 1st since it is most used member */ |
| unsigned ah_flags; |
| |
| /* The raw stream as read from disk or stdin */ |
| int src_fd; |
| |
| /* Define if the header and data component should be processed */ |
| char FAST_FUNC (*filter)(struct archive_handle_t *); |
| /* List of files that have been accepted */ |
| llist_t *accept; |
| /* List of files that have been rejected */ |
| llist_t *reject; |
| /* List of files that have successfully been worked on */ |
| llist_t *passed; |
| |
| /* Currently processed file's header */ |
| file_header_t *file_header; |
| |
| /* Process the header component, e.g. tar -t */ |
| void FAST_FUNC (*action_header)(const file_header_t *); |
| |
| /* Process the data component, e.g. extract to filesystem */ |
| void FAST_FUNC (*action_data)(struct archive_handle_t *); |
| |
| /* Function that skips data */ |
| void FAST_FUNC (*seek)(int fd, off_t amount); |
| |
| /* Count processed bytes */ |
| off_t offset; |
| |
| /* Archiver specific. Can make it a union if it ever gets big */ |
| #if ENABLE_TAR || ENABLE_DPKG || ENABLE_DPKG_DEB |
| smallint tar__end; |
| # if ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
| char* tar__longname; |
| char* tar__linkname; |
| # endif |
| #endif |
| #if ENABLE_CPIO || ENABLE_RPM2CPIO || ENABLE_RPM |
| uoff_t cpio__blocks; |
| struct hardlinks_t *cpio__hardlinks_to_create; |
| struct hardlinks_t *cpio__created_hardlinks; |
| #endif |
| #if ENABLE_DPKG || ENABLE_DPKG_DEB |
| /* Temporary storage */ |
| char *dpkg__buffer; |
| /* How to process any sub archive, e.g. get_header_tar_gz */ |
| char FAST_FUNC (*dpkg__action_data_subarchive)(struct archive_handle_t *); |
| /* Contains the handle to a sub archive */ |
| struct archive_handle_t *dpkg__sub_archive; |
| #endif |
| #if ENABLE_FEATURE_AR_CREATE |
| const char *ar__name; |
| struct archive_handle_t *ar__out; |
| #endif |
| } archive_handle_t; |
| /* bits in ah_flags */ |
| #define ARCHIVE_RESTORE_DATE (1 << 0) |
| #define ARCHIVE_CREATE_LEADING_DIRS (1 << 1) |
| #define ARCHIVE_UNLINK_OLD (1 << 2) |
| #define ARCHIVE_EXTRACT_QUIET (1 << 3) |
| #define ARCHIVE_EXTRACT_NEWER (1 << 4) |
| #define ARCHIVE_DONT_RESTORE_OWNER (1 << 5) |
| #define ARCHIVE_DONT_RESTORE_PERM (1 << 6) |
| #define ARCHIVE_NUMERIC_OWNER (1 << 7) |
| #define ARCHIVE_O_TRUNC (1 << 8) |
| |
| |
| /* Info struct unpackers can fill out to inform users of thing like |
| * timestamps of unpacked files */ |
| typedef struct unpack_info_t { |
| time_t mtime; |
| } unpack_info_t; |
| |
| extern archive_handle_t *init_handle(void) FAST_FUNC; |
| |
| extern char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char filter_accept_list(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char filter_accept_list_reassign(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char filter_accept_reject_list(archive_handle_t *archive_handle) FAST_FUNC; |
| |
| extern void unpack_ar_archive(archive_handle_t *ar_archive) FAST_FUNC; |
| |
| extern void data_skip(archive_handle_t *archive_handle) FAST_FUNC; |
| extern void data_extract_all(archive_handle_t *archive_handle) FAST_FUNC; |
| extern void data_extract_to_stdout(archive_handle_t *archive_handle) FAST_FUNC; |
| |
| extern void header_skip(const file_header_t *file_header) FAST_FUNC; |
| extern void header_list(const file_header_t *file_header) FAST_FUNC; |
| extern void header_verbose_list(const file_header_t *file_header) FAST_FUNC; |
| |
| extern char get_header_ar(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char get_header_cpio(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char get_header_tar(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char get_header_tar_gz(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char get_header_tar_bz2(archive_handle_t *archive_handle) FAST_FUNC; |
| extern char get_header_tar_lzma(archive_handle_t *archive_handle) FAST_FUNC; |
| |
| extern void seek_by_jump(int fd, off_t amount) FAST_FUNC; |
| extern void seek_by_read(int fd, off_t amount) FAST_FUNC; |
| |
| extern void data_align(archive_handle_t *archive_handle, unsigned boundary) FAST_FUNC; |
| extern const llist_t *find_list_entry(const llist_t *list, const char *filename) FAST_FUNC; |
| extern const llist_t *find_list_entry2(const llist_t *list, const char *filename) FAST_FUNC; |
| |
| /* A bit of bunzip2 internals are exposed for compressed help support: */ |
| typedef struct bunzip_data bunzip_data; |
| int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len) FAST_FUNC; |
| int read_bunzip(bunzip_data *bd, char *outbuf, int len) FAST_FUNC; |
| void dealloc_bunzip(bunzip_data *bd) FAST_FUNC; |
| |
| typedef struct inflate_unzip_result { |
| off_t bytes_out; |
| uint32_t crc; |
| } inflate_unzip_result; |
| |
| IF_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd) FAST_FUNC; |
| /* lzma unpacker takes .lzma stream from offset 0 */ |
| IF_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd) FAST_FUNC; |
| /* the rest wants 2 first bytes already skipped by the caller */ |
| IF_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC; |
| IF_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC; |
| IF_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC; |
| IF_DESKTOP(long long) int unpack_Z_stream(int fd_in, int fd_out) FAST_FUNC; |
| /* wrapper which checks first two bytes to be "BZ" */ |
| IF_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC; |
| |
| int bbunpack(char **argv, |
| char* (*make_new_name)(char *filename), |
| IF_DESKTOP(long long) int (*unpacker)(unpack_info_t *info)) FAST_FUNC; |
| |
| #if BB_MMU |
| void open_transformer(int fd, |
| IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd)) FAST_FUNC; |
| #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transformer) |
| #else |
| void open_transformer(int src_fd, const char *transform_prog) FAST_FUNC; |
| #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transform_prog) |
| #endif |
| |
| POP_SAVED_FUNCTION_VISIBILITY |
| |
| #endif |