1 /* vi: set sw=4 ts=4: */
5 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
9 COMPRESS_MAGIC = 0x1f9d,
11 BZIP2_MAGIC = ('B'<<8) + 'Z',
12 XZ_MAGIC1 = (0xfd<<8) + '7',
13 XZ_MAGIC2 = ((((('z'<<8) + 'X')<<8) + 'Z')<<8) + 0,
15 COMPRESS_MAGIC = 0x9d1f,
17 BZIP2_MAGIC = ('Z'<<8) + 'B',
18 XZ_MAGIC1 = ('7'<<8) + 0xfd,
19 XZ_MAGIC2 = (((((0<<8) + 'Z')<<8) + 'X')<<8) + 'z',
23 typedef struct file_header_t {
26 #if ENABLE_FEATURE_TAR_UNAME_GNAME
40 typedef struct archive_handle_t {
41 /* Flags. 1st since it is most used member */
44 /* The raw stream as read from disk or stdin */
47 /* Define if the header and data component should be processed */
48 char FAST_FUNC (*filter)(struct archive_handle_t *);
49 /* List of files that have been accepted */
51 /* List of files that have been rejected */
53 /* List of files that have successfully been worked on */
56 /* Currently processed file's header */
57 file_header_t *file_header;
59 /* Process the header component, e.g. tar -t */
60 void FAST_FUNC (*action_header)(const file_header_t *);
62 /* Process the data component, e.g. extract to filesystem */
63 void FAST_FUNC (*action_data)(struct archive_handle_t *);
65 /* Function that skips data */
66 void FAST_FUNC (*seek)(int fd, off_t amount);
68 /* Count processed bytes */
71 /* Archiver specific. Can make it a union if it ever gets big */
72 #if ENABLE_TAR || ENABLE_DPKG || ENABLE_DPKG_DEB
74 # if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
78 # if ENABLE_FEATURE_TAR_SELINUX
79 char* tar__global_sctx;
80 char* tar__next_file_sctx;
83 #if ENABLE_CPIO || ENABLE_RPM2CPIO || ENABLE_RPM
85 struct hardlinks_t *cpio__hardlinks_to_create;
86 struct hardlinks_t *cpio__created_hardlinks;
88 #if ENABLE_DPKG || ENABLE_DPKG_DEB
89 /* Temporary storage */
91 /* How to process any sub archive, e.g. get_header_tar_gz */
92 char FAST_FUNC (*dpkg__action_data_subarchive)(struct archive_handle_t *);
93 /* Contains the handle to a sub archive */
94 struct archive_handle_t *dpkg__sub_archive;
96 #if ENABLE_FEATURE_AR_CREATE
98 struct archive_handle_t *ar__out;
101 /* bits in ah_flags */
102 #define ARCHIVE_RESTORE_DATE (1 << 0)
103 #define ARCHIVE_CREATE_LEADING_DIRS (1 << 1)
104 #define ARCHIVE_UNLINK_OLD (1 << 2)
105 #define ARCHIVE_EXTRACT_QUIET (1 << 3)
106 #define ARCHIVE_EXTRACT_NEWER (1 << 4)
107 #define ARCHIVE_DONT_RESTORE_OWNER (1 << 5)
108 #define ARCHIVE_DONT_RESTORE_PERM (1 << 6)
109 #define ARCHIVE_NUMERIC_OWNER (1 << 7)
110 #define ARCHIVE_O_TRUNC (1 << 8)
113 /* Info struct unpackers can fill out to inform users of thing like
114 * timestamps of unpacked files */
115 typedef struct unpack_info_t {
119 extern archive_handle_t *init_handle(void) FAST_FUNC;
121 extern char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC;
122 extern char filter_accept_list(archive_handle_t *archive_handle) FAST_FUNC;
123 extern char filter_accept_list_reassign(archive_handle_t *archive_handle) FAST_FUNC;
124 extern char filter_accept_reject_list(archive_handle_t *archive_handle) FAST_FUNC;
126 extern void unpack_ar_archive(archive_handle_t *ar_archive) FAST_FUNC;
128 extern void data_skip(archive_handle_t *archive_handle) FAST_FUNC;
129 extern void data_extract_all(archive_handle_t *archive_handle) FAST_FUNC;
130 extern void data_extract_to_stdout(archive_handle_t *archive_handle) FAST_FUNC;
132 extern void header_skip(const file_header_t *file_header) FAST_FUNC;
133 extern void header_list(const file_header_t *file_header) FAST_FUNC;
134 extern void header_verbose_list(const file_header_t *file_header) FAST_FUNC;
136 extern char get_header_ar(archive_handle_t *archive_handle) FAST_FUNC;
137 extern char get_header_cpio(archive_handle_t *archive_handle) FAST_FUNC;
138 extern char get_header_tar(archive_handle_t *archive_handle) FAST_FUNC;
139 extern char get_header_tar_gz(archive_handle_t *archive_handle) FAST_FUNC;
140 extern char get_header_tar_bz2(archive_handle_t *archive_handle) FAST_FUNC;
141 extern char get_header_tar_lzma(archive_handle_t *archive_handle) FAST_FUNC;
143 extern void seek_by_jump(int fd, off_t amount) FAST_FUNC;
144 extern void seek_by_read(int fd, off_t amount) FAST_FUNC;
146 extern void data_align(archive_handle_t *archive_handle, unsigned boundary) FAST_FUNC;
147 extern const llist_t *find_list_entry(const llist_t *list, const char *filename) FAST_FUNC;
148 extern const llist_t *find_list_entry2(const llist_t *list, const char *filename) FAST_FUNC;
150 /* A bit of bunzip2 internals are exposed for compressed help support: */
151 typedef struct bunzip_data bunzip_data;
152 int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len) FAST_FUNC;
153 int read_bunzip(bunzip_data *bd, char *outbuf, int len) FAST_FUNC;
154 void dealloc_bunzip(bunzip_data *bd) FAST_FUNC;
156 typedef struct inflate_unzip_result {
159 } inflate_unzip_result;
161 IF_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd) FAST_FUNC;
162 /* xz unpacker takes .xz stream from offset 0 */
163 IF_DESKTOP(long long) int unpack_xz_stream(int src_fd, int dst_fd) FAST_FUNC;
164 /* lzma unpacker takes .lzma stream from offset 0 */
165 IF_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd) FAST_FUNC;
166 /* the rest wants 2 first bytes already skipped by the caller */
167 IF_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd) FAST_FUNC;
168 IF_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd) FAST_FUNC;
169 IF_DESKTOP(long long) int unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info) FAST_FUNC;
170 IF_DESKTOP(long long) int unpack_Z_stream(int src_fd, int dst_fd) FAST_FUNC;
171 /* wrapper which checks first two bytes to be "BZ" */
172 IF_DESKTOP(long long) int unpack_bz2_stream_prime(int src_fd, int dst_fd) FAST_FUNC;
174 char* append_ext(char *filename, const char *expected_ext) FAST_FUNC;
175 int bbunpack(char **argv,
176 IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(unpack_info_t *info),
177 char* FAST_FUNC (*make_new_name)(char *filename, const char *expected_ext),
178 const char *expected_ext
182 void open_transformer(int fd,
183 IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd)) FAST_FUNC;
184 #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transformer)
186 void open_transformer(int src_fd, const char *transform_prog) FAST_FUNC;
187 #define open_transformer(fd, transformer, transform_prog) open_transformer(fd, transform_prog)
190 POP_SAVED_FUNCTION_VISIBILITY