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

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File MIME type: text/plain
    File size: 4084 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 /* vi: set sw=4 ts=4: */
    2 #ifndef __UNARCHIVE_H__
    3 #define __UNARCHIVE_H__
    4
    5 #define ARCHIVE_PRESERVE_DATE 1
    6 #define ARCHIVE_CREATE_LEADING_DIRS 2
    7 #define ARCHIVE_EXTRACT_UNCONDITIONAL 4
    8 #define ARCHIVE_EXTRACT_QUIET 8
    9 #define ARCHIVE_EXTRACT_NEWER 16
    10 #define ARCHIVE_NOPRESERVE_OWN 32
    11 #define ARCHIVE_NOPRESERVE_PERM 64
    12
    13 #include "libbb.h"
    14
    15 typedef struct file_headers_s {
    16 char *name;
    17 char *link_name;
    18 off_t size;
    19 uid_t uid;
    20 gid_t gid;
    21 mode_t mode;
    22 time_t mtime;
    23 dev_t device;
    24 } file_header_t;
    25
    26 typedef struct archive_handle_s {
    27 /* define if the header and data component should be processed */
    28 char (*filter)(struct archive_handle_s *);
    29 llist_t *accept;
    30 /* List of files that have been rejected */
    31 llist_t *reject;
    32 /* List of files that have successfully been worked on */
    33 llist_t *passed;
    34
    35 /* Contains the processed header entry */
    36 file_header_t *file_header;
    37
    38 /* process the header component, e.g. tar -t */
    39 void (*action_header)(const file_header_t *);
    40
    41 /* process the data component, e.g. extract to filesystem */
    42 void (*action_data)(struct archive_handle_s *);
    43
    44 /* How to process any sub archive, e.g. get_header_tar_gz */
    45 char (*action_data_subarchive)(struct archive_handle_s *);
    46
    47 /* Contains the handle to a sub archive */
    48 struct archive_handle_s *sub_archive;
    49
    50 /* The raw stream as read from disk or stdin */
    51 int src_fd;
    52
    53 /* Count the number of bytes processed */
    54 off_t offset;
    55
    56 /* Function that skips data: read_by_char or read_by_skip */
    57 void (*seek)(const struct archive_handle_s *archive_handle, const unsigned int amount);
    58
    59 /* Temporary storage */
    60 char *buffer;
    61
    62 /* Flags and misc. stuff */
    63 unsigned char flags;
    64
    65 } archive_handle_t;
    66
    67
    68 extern archive_handle_t *init_handle(void);
    69
    70 extern char filter_accept_all(archive_handle_t *archive_handle);
    71 extern char filter_accept_list(archive_handle_t *archive_handle);
    72 extern char filter_accept_list_reassign(archive_handle_t *archive_handle);
    73 extern char filter_accept_reject_list(archive_handle_t *archive_handle);
    74
    75 extern void unpack_ar_archive(archive_handle_t *ar_archive);
    76
    77 extern void data_skip(archive_handle_t *archive_handle);
    78 extern void data_extract_all(archive_handle_t *archive_handle);
    79 extern void data_extract_to_stdout(archive_handle_t *archive_handle);
    80 extern void data_extract_to_buffer(archive_handle_t *archive_handle);
    81
    82 extern void header_skip(const file_header_t *file_header);
    83 extern void header_list(const file_header_t *file_header);
    84 extern void header_verbose_list(const file_header_t *file_header);
    85
    86 extern void check_header_gzip(int src_fd);
    87
    88 extern char get_header_ar(archive_handle_t *archive_handle);
    89 extern char get_header_cpio(archive_handle_t *archive_handle);
    90 extern char get_header_tar(archive_handle_t *archive_handle);
    91 extern char get_header_tar_bz2(archive_handle_t *archive_handle);
    92 extern char get_header_tar_lzma(archive_handle_t *archive_handle);
    93 extern char get_header_tar_gz(archive_handle_t *archive_handle);
    94
    95 extern void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount);
    96 extern void seek_by_read(const archive_handle_t *archive_handle, const unsigned int amount);
    97
    98 extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
    99
    100 extern void data_align(archive_handle_t *archive_handle, const unsigned short boundary);
    101 extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
    102 extern const llist_t *find_list_entry2(const llist_t *list, const char *filename);
    103
    104 extern USE_DESKTOP(long long) int uncompressStream(int src_fd, int dst_fd);
    105
    106 typedef struct inflate_unzip_result {
    107 off_t bytes_out;
    108 uint32_t crc;
    109 } inflate_unzip_result;
    110
    111 extern USE_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, unsigned bufsize, int in, int out);
    112 extern USE_DESKTOP(long long) int inflate_gunzip(int in, int out);
    113 extern USE_DESKTOP(long long) int unlzma(int src_fd, int dst_fd);
    114
    115 extern int open_transformer(int src_fd,
    116 USE_DESKTOP(long long) int (*transformer)(int src_fd, int dst_fd));
    117
    118 #endif