1 /* vi: set sw=4 ts=4: */
2 #ifndef __UNARCHIVE_H__
3 #define __UNARCHIVE_H__
6 # pragma GCC visibility push(hidden)
9 #define ARCHIVE_PRESERVE_DATE 1
10 #define ARCHIVE_CREATE_LEADING_DIRS 2
11 #define ARCHIVE_EXTRACT_UNCONDITIONAL 4
12 #define ARCHIVE_EXTRACT_QUIET 8
13 #define ARCHIVE_EXTRACT_NEWER 16
14 #define ARCHIVE_NOPRESERVE_OWN 32
15 #define ARCHIVE_NOPRESERVE_PERM 64
17 typedef struct file_header_t {
20 #if ENABLE_FEATURE_TAR_UNAME_GNAME
32 typedef struct archive_handle_t {
33 /* define if the header and data component should be processed */
34 char (*filter)(struct archive_handle_t *);
36 /* List of files that have been rejected */
38 /* List of files that have successfully been worked on */
41 /* Contains the processed header entry */
42 file_header_t *file_header;
44 /* process the header component, e.g. tar -t */
45 void (*action_header)(const file_header_t *);
47 /* process the data component, e.g. extract to filesystem */
48 void (*action_data)(struct archive_handle_t *);
50 /* How to process any sub archive, e.g. get_header_tar_gz */
51 char (*action_data_subarchive)(struct archive_handle_t *);
53 /* Contains the handle to a sub archive */
54 struct archive_handle_t *sub_archive;
56 /* The raw stream as read from disk or stdin */
59 /* Count the number of bytes processed */
62 /* Function that skips data: read_by_char or read_by_skip */
63 void (*seek)(const struct archive_handle_t *archive_handle, const unsigned amount);
65 /* Temporary storage */
68 /* Flags and misc. stuff */
74 extern archive_handle_t *init_handle(void);
76 extern char filter_accept_all(archive_handle_t *archive_handle);
77 extern char filter_accept_list(archive_handle_t *archive_handle);
78 extern char filter_accept_list_reassign(archive_handle_t *archive_handle);
79 extern char filter_accept_reject_list(archive_handle_t *archive_handle);
81 extern void unpack_ar_archive(archive_handle_t *ar_archive);
83 extern void data_skip(archive_handle_t *archive_handle);
84 extern void data_extract_all(archive_handle_t *archive_handle);
85 extern void data_extract_to_stdout(archive_handle_t *archive_handle);
86 extern void data_extract_to_buffer(archive_handle_t *archive_handle);
88 extern void header_skip(const file_header_t *file_header);
89 extern void header_list(const file_header_t *file_header);
90 extern void header_verbose_list(const file_header_t *file_header);
92 extern char get_header_ar(archive_handle_t *archive_handle);
93 extern char get_header_cpio(archive_handle_t *archive_handle);
94 extern char get_header_tar(archive_handle_t *archive_handle);
95 extern char get_header_tar_bz2(archive_handle_t *archive_handle);
96 extern char get_header_tar_lzma(archive_handle_t *archive_handle);
97 extern char get_header_tar_gz(archive_handle_t *archive_handle);
99 extern void seek_by_jump(const archive_handle_t *archive_handle, unsigned amount);
100 extern void seek_by_read(const archive_handle_t *archive_handle, unsigned amount);
102 extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
104 extern void data_align(archive_handle_t *archive_handle, unsigned boundary);
105 extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
106 extern const llist_t *find_list_entry2(const llist_t *list, const char *filename);
108 /* A bit of bunzip2 internals are exposed for compressed help support: */
109 typedef struct bunzip_data bunzip_data;
110 int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len);
111 int read_bunzip(bunzip_data *bd, char *outbuf, int len);
112 void dealloc_bunzip(bunzip_data *bd);
114 typedef struct inflate_unzip_result {
117 } inflate_unzip_result;
119 extern USE_DESKTOP(long long) int unpack_bz2_stream(int src_fd, int dst_fd);
120 extern USE_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd);
121 extern USE_DESKTOP(long long) int unpack_gz_stream(int src_fd, int dst_fd);
122 extern USE_DESKTOP(long long) int unpack_lzma_stream(int src_fd, int dst_fd);
125 extern int open_transformer(int src_fd,
126 USE_DESKTOP(long long) int (*transformer)(int src_fd, int dst_fd));
127 #define open_transformer(src_fd, transformer, transform_prog) open_transformer(src_fd, transformer)
129 extern int open_transformer(int src_fd, const char *transform_prog);
130 #define open_transformer(src_fd, transformer, transform_prog) open_transformer(src_fd, transform_prog)
133 #if __GNUC_PREREQ(4,1)
134 # pragma GCC visibility pop