update seamless uncompression code
This change makes "tar tf hello_world.txz" work without adding special-casing for ".txz" extension. It also removes ever-growing magic checking code in rpm2cpio and get_header_tar - we reuse one which lives in setup_unzip_on_fd. function old new delta unpack_gz_stream 7 566 +559 check_signature16 - 70 +70 setup_unzip_on_fd 99 142 +43 handle_SIGCHLD - 41 +41 unpack_bz2_stream 342 376 +34 unzip_main 2352 2385 +33 bbunpack 503 533 +30 open_transformer 74 102 +28 unpack_Z_stream 1278 1304 +26 unpack_gunzip 101 123 +22 init_transformer_aux_data - 18 +18 unpack_xz_stream 2388 2402 +14 open_zipped 131 141 +10 rpm_main 1358 1363 +5 get_header_tar_lzma 52 57 +5 get_header_tar_bz2 52 57 +5 unpack_lzma_stream 2698 2702 +4 hash_find 234 233 -1 get_header_tar 1759 1733 -26 get_header_tar_gz 92 57 -35 unpack_uncompress 51 12 -39 rpm2cpio_main 201 147 -54 unpack_unxz 67 12 -55 unpack_bz2_stream_prime 55 - -55 get_header_tar_Z 86 - -86 unpack_gz_stream_with_info 539 - -539 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 14/6 up/down: 947/-890) Total: 57 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
774bce8e8b
commit
8a6a2f9c9c
@ -33,7 +33,7 @@ char* FAST_FUNC append_ext(char *filename, const char *expected_ext)
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}
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int FAST_FUNC bbunpack(char **argv,
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IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(unpack_info_t *info),
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IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(transformer_aux_data_t *aux),
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char* FAST_FUNC (*make_new_name)(char *filename, const char *expected_ext),
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const char *expected_ext
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)
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@ -42,7 +42,7 @@ int FAST_FUNC bbunpack(char **argv,
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IF_DESKTOP(long long) int status;
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char *filename, *new_name;
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smallint exitcode = 0;
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unpack_info_t info;
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transformer_aux_data_t aux;
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do {
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/* NB: new_name is *maybe* malloc'ed! */
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@ -98,9 +98,9 @@ int FAST_FUNC bbunpack(char **argv,
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"use -f to force it");
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}
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/* memset(&info, 0, sizeof(info)); */
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info.mtime = 0; /* so far it has one member only */
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status = unpacker(&info);
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init_transformer_aux_data(&aux);
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aux.check_signature = 1;
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status = unpacker(&aux);
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if (status < 0)
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exitcode = 1;
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@ -111,10 +111,10 @@ int FAST_FUNC bbunpack(char **argv,
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char *del = new_name;
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if (status >= 0) {
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/* TODO: restore other things? */
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if (info.mtime) {
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if (aux.mtime != 0) {
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struct timeval times[2];
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times[1].tv_sec = times[0].tv_sec = info.mtime;
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times[1].tv_sec = times[0].tv_sec = aux.mtime;
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times[1].tv_usec = times[0].tv_usec = 0;
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/* Note: we closed it first.
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* On some systems calling utimes
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@ -182,16 +182,9 @@ char* FAST_FUNC make_new_name_generic(char *filename, const char *expected_ext)
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#if ENABLE_UNCOMPRESS
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static
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IF_DESKTOP(long long) int FAST_FUNC unpack_uncompress(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC unpack_uncompress(transformer_aux_data_t *aux)
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{
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IF_DESKTOP(long long) int status = -1;
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if ((xread_char(STDIN_FILENO) != 0x1f) || (xread_char(STDIN_FILENO) != 0x9d)) {
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bb_error_msg("invalid magic");
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} else {
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status = unpack_Z_stream(STDIN_FILENO, STDOUT_FILENO);
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}
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return status;
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return unpack_Z_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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}
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int uncompress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int uncompress_main(int argc UNUSED_PARAM, char **argv)
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@ -279,30 +272,30 @@ char* FAST_FUNC make_new_name_gunzip(char *filename, const char *expected_ext UN
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return filename;
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}
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static
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IF_DESKTOP(long long) int FAST_FUNC unpack_gunzip(unpack_info_t *info)
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IF_DESKTOP(long long) int FAST_FUNC unpack_gunzip(transformer_aux_data_t *aux)
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{
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IF_DESKTOP(long long) int status = -1;
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uint16_t magic2;
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/* do the decompression, and cleanup */
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if (xread_char(STDIN_FILENO) == 0x1f) {
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unsigned char magic2;
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//TODO: fold below into unpack_gz_stream? Then the whole level of indirection
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// unpack_FOO() -> unpack_FOO_stream can be collapsed in this module!
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magic2 = xread_char(STDIN_FILENO);
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if (ENABLE_FEATURE_SEAMLESS_Z && magic2 == 0x9d) {
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status = unpack_Z_stream(STDIN_FILENO, STDOUT_FILENO);
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} else if (magic2 == 0x8b) {
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status = unpack_gz_stream_with_info(STDIN_FILENO, STDOUT_FILENO, info);
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} else {
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aux->check_signature = 0; /* we will check it here, not in unpack_*_stream */
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if (full_read(STDIN_FILENO, &magic2, 2) != 2)
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goto bad_magic;
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}
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if (status < 0) {
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bb_error_msg("error inflating");
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}
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if (ENABLE_FEATURE_SEAMLESS_Z && magic2 == COMPRESS_MAGIC) {
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status = unpack_Z_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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} else if (magic2 == GZIP_MAGIC) {
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status = unpack_gz_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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} else {
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bad_magic:
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bb_error_msg("invalid magic");
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/* status is still == -1 */
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}
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if (status < 0) {
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bb_error_msg("error inflating");
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}
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return status;
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}
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/*
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@ -352,9 +345,9 @@ int gunzip_main(int argc UNUSED_PARAM, char **argv)
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//applet:IF_BUNZIP2(APPLET_ODDNAME(bzcat, bunzip2, BB_DIR_USR_BIN, BB_SUID_DROP, bzcat))
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#if ENABLE_BUNZIP2
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static
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IF_DESKTOP(long long) int FAST_FUNC unpack_bunzip2(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC unpack_bunzip2(transformer_aux_data_t *aux)
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{
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return unpack_bz2_stream_prime(STDIN_FILENO, STDOUT_FILENO);
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return unpack_bz2_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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}
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int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int bunzip2_main(int argc UNUSED_PARAM, char **argv)
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@ -420,9 +413,9 @@ int bunzip2_main(int argc UNUSED_PARAM, char **argv)
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#if ENABLE_UNLZMA
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static
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IF_DESKTOP(long long) int FAST_FUNC unpack_unlzma(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC unpack_unlzma(transformer_aux_data_t *aux)
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{
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return unpack_lzma_stream(STDIN_FILENO, STDOUT_FILENO);
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return unpack_lzma_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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}
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int unlzma_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int unlzma_main(int argc UNUSED_PARAM, char **argv)
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@ -445,18 +438,9 @@ int unlzma_main(int argc UNUSED_PARAM, char **argv)
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#if ENABLE_UNXZ
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static
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IF_DESKTOP(long long) int FAST_FUNC unpack_unxz(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC unpack_unxz(transformer_aux_data_t *aux)
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{
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struct {
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uint32_t v1;
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uint16_t v2;
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} magic;
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xread(STDIN_FILENO, &magic, 6);
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if (magic.v1 != XZ_MAGIC1a || magic.v2 != XZ_MAGIC2a) {
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bb_error_msg("invalid magic");
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return -1;
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}
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return unpack_xz_stream(STDIN_FILENO, STDOUT_FILENO);
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return unpack_xz_stream(aux, STDIN_FILENO, STDOUT_FILENO);
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}
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int unxz_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int unxz_main(int argc UNUSED_PARAM, char **argv)
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@ -111,7 +111,7 @@ IF_DESKTOP(long long) int bz_write(bz_stream *strm, void* rbuf, ssize_t rlen, vo
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}
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static
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IF_DESKTOP(long long) int FAST_FUNC compressStream(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC compressStream(transformer_aux_data_t *aux UNUSED_PARAM)
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{
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IF_DESKTOP(long long) int total;
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ssize_t count;
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@ -2015,7 +2015,7 @@ static void zip(ulg time_stamp)
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/* ======================================================================== */
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static
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IF_DESKTOP(long long) int FAST_FUNC pack_gzip(unpack_info_t *info UNUSED_PARAM)
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IF_DESKTOP(long long) int FAST_FUNC pack_gzip(transformer_aux_data_t *aux UNUSED_PARAM)
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{
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struct stat s;
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@ -721,7 +721,7 @@ void FAST_FUNC dealloc_bunzip(bunzip_data *bd)
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/* Decompress src_fd to dst_fd. Stops at end of bzip data, not end of file. */
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_bz2_stream(int src_fd, int dst_fd)
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unpack_bz2_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd)
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{
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IF_DESKTOP(long long total_written = 0;)
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bunzip_data *bd;
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@ -729,6 +729,9 @@ unpack_bz2_stream(int src_fd, int dst_fd)
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int i;
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unsigned len;
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if (check_signature16(aux, src_fd, BZIP2_MAGIC))
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return -1;
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outbuf = xmalloc(IOBUF_SIZE);
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len = 0;
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while (1) { /* "Process one BZ... stream" loop */
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@ -794,17 +797,6 @@ unpack_bz2_stream(int src_fd, int dst_fd)
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return i ? i : IF_DESKTOP(total_written) + 0;
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}
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_bz2_stream_prime(int src_fd, int dst_fd)
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{
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uint16_t magic2;
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xread(src_fd, &magic2, 2);
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if (magic2 != BZIP2_MAGIC) {
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bb_error_msg_and_die("invalid magic");
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}
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return unpack_bz2_stream(src_fd, dst_fd);
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}
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#ifdef TESTING
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static char *const bunzip_errors[] = {
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@ -819,7 +811,7 @@ int main(int argc, char **argv)
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int i;
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char c;
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int i = unpack_bz2_stream_prime(0, 1);
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int i = unpack_bz2_stream(0, 1);
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if (i < 0)
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fprintf(stderr, "%s\n", bunzip_errors[-i]);
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else if (read(STDIN_FILENO, &c, 1))
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@ -1034,22 +1034,22 @@ inflate_unzip_internal(STATE_PARAM int in, int out)
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/* For unzip */
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IF_DESKTOP(long long) int FAST_FUNC
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inflate_unzip(inflate_unzip_result *res, off_t compr_size, int in, int out)
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inflate_unzip(transformer_aux_data_t *aux, int in, int out)
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{
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IF_DESKTOP(long long) int n;
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DECLARE_STATE;
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ALLOC_STATE;
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to_read = compr_size;
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to_read = aux->bytes_in;
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// bytebuffer_max = 0x8000;
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bytebuffer_offset = 4;
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bytebuffer = xmalloc(bytebuffer_max);
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n = inflate_unzip_internal(PASS_STATE in, out);
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free(bytebuffer);
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res->crc = gunzip_crc;
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res->bytes_out = gunzip_bytes_out;
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aux->crc32 = gunzip_crc;
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aux->bytes_out = gunzip_bytes_out;
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DEALLOC_STATE;
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return n;
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}
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@ -1107,7 +1107,7 @@ static uint32_t buffer_read_le_u32(STATE_PARAM_ONLY)
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return res;
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}
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static int check_header_gzip(STATE_PARAM unpack_info_t *info)
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static int check_header_gzip(STATE_PARAM transformer_aux_data_t *aux)
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{
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union {
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unsigned char raw[8];
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@ -1169,8 +1169,8 @@ static int check_header_gzip(STATE_PARAM unpack_info_t *info)
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}
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}
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if (info)
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info->mtime = SWAP_LE32(header.formatted.mtime);
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if (aux)
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aux->mtime = SWAP_LE32(header.formatted.mtime);
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/* Read the header checksum */
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if (header.formatted.flags & 0x02) {
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@ -1182,12 +1182,15 @@ static int check_header_gzip(STATE_PARAM unpack_info_t *info)
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}
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info)
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unpack_gz_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd)
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{
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uint32_t v32;
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IF_DESKTOP(long long) int total, n;
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DECLARE_STATE;
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if (check_signature16(aux, src_fd, GZIP_MAGIC))
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return -1;
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total = 0;
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ALLOC_STATE;
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@ -1197,7 +1200,7 @@ unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info)
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gunzip_src_fd = src_fd;
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again:
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if (!check_header_gzip(PASS_STATE info)) {
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if (!check_header_gzip(PASS_STATE aux)) {
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bb_error_msg("corrupted data");
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total = -1;
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goto ret;
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@ -1248,9 +1251,3 @@ unpack_gz_stream_with_info(int src_fd, int dst_fd, unpack_info_t *info)
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DEALLOC_STATE;
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return total;
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}
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_gz_stream(int in, int out)
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{
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return unpack_gz_stream_with_info(in, out, NULL);
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}
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@ -73,7 +73,7 @@
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*/
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_Z_stream(int src_fd, int dst_fd)
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unpack_Z_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd)
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{
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IF_DESKTOP(long long total_written = 0;)
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IF_DESKTOP(long long) int retval = -1;
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@ -103,6 +103,9 @@ unpack_Z_stream(int src_fd, int dst_fd)
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/* block compress mode -C compatible with 2.0 */
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int block_mode; /* = BLOCK_MODE; */
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if (check_signature16(aux, src_fd, COMPRESS_MAGIC))
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return -1;
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inbuf = xzalloc(IBUFSIZ + 64);
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outbuf = xzalloc(OBUFSIZ + 2048);
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htab = xzalloc(HSIZE); /* wasn't zeroed out before, maybe can xmalloc? */
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@ -213,7 +213,7 @@ enum {
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_lzma_stream(int src_fd, int dst_fd)
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unpack_lzma_stream(transformer_aux_data_t *aux UNUSED_PARAM, int src_fd, int dst_fd)
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{
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IF_DESKTOP(long long total_written = 0;)
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lzma_header_t header;
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@ -38,7 +38,7 @@ static uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc)
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#include "unxz/xz_dec_stream.c"
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IF_DESKTOP(long long) int FAST_FUNC
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unpack_xz_stream(int src_fd, int dst_fd)
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unpack_xz_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd)
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{
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struct xz_buf iobuf;
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struct xz_dec *state;
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@ -49,13 +49,17 @@ unpack_xz_stream(int src_fd, int dst_fd)
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global_crc32_table = crc32_filltable(NULL, /*endian:*/ 0);
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memset(&iobuf, 0, sizeof(iobuf));
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/* Preload XZ file signature */
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membuf = (void*) strcpy(xmalloc(2 * BUFSIZ), HEADER_MAGIC);
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membuf = xmalloc(2 * BUFSIZ);
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iobuf.in = membuf;
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iobuf.in_size = HEADER_MAGIC_SIZE;
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iobuf.out = membuf + BUFSIZ;
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iobuf.out_size = BUFSIZ;
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if (!aux || aux->check_signature == 0) {
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/* Preload XZ file signature */
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strcpy((char*)membuf, HEADER_MAGIC);
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iobuf.in_size = HEADER_MAGIC_SIZE;
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} /* else: let xz code read & check it */
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/* Limit memory usage to about 64 MiB. */
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state = xz_dec_init(XZ_DYNALLOC, 64*1024*1024);
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@ -235,43 +235,18 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
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|| memcmp(tar.magic, "\0\0\0\0", 5) != 0)
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) {
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#if ENABLE_FEATURE_TAR_AUTODETECT
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char FAST_FUNC (*get_header_ptr)(archive_handle_t *);
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uint16_t magic2;
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autodetect:
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magic2 = *(bb__aliased_uint16_t*)tar.name;
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/* tar gz/bz autodetect: check for gz/bz2 magic.
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* If we see the magic, and it is the very first block,
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* we can switch to get_header_tar_gz/bz2/lzma().
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* Needs seekable fd. I wish recv(MSG_PEEK) works
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* on any fd... */
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# if ENABLE_FEATURE_SEAMLESS_GZ
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if (magic2 == GZIP_MAGIC) {
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get_header_ptr = get_header_tar_gz;
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} else
|
||||
# endif
|
||||
# if ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
if (magic2 == BZIP2_MAGIC
|
||||
&& tar.name[2] == 'h' && isdigit(tar.name[3])
|
||||
) { /* bzip2 */
|
||||
get_header_ptr = get_header_tar_bz2;
|
||||
} else
|
||||
# endif
|
||||
# if ENABLE_FEATURE_SEAMLESS_XZ
|
||||
//TODO: if (magic2 == XZ_MAGIC1)...
|
||||
//else
|
||||
# endif
|
||||
goto err;
|
||||
/* Two different causes for lseek() != 0:
|
||||
* unseekable fd (would like to support that too, but...),
|
||||
* or not first block (false positive, it's not .gz/.bz2!) */
|
||||
if (lseek(archive_handle->src_fd, -i, SEEK_CUR) != 0)
|
||||
goto err;
|
||||
while (get_header_ptr(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
return EXIT_FAILURE;
|
||||
if (setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_detected:*/ 0) != 0)
|
||||
err:
|
||||
#endif /* FEATURE_TAR_AUTODETECT */
|
||||
bb_error_msg_and_die("invalid tar magic");
|
||||
archive_handle->offset = 0;
|
||||
goto again_after_align;
|
||||
#endif
|
||||
bb_error_msg_and_die("invalid tar magic");
|
||||
}
|
||||
|
||||
|
||||
@ -11,7 +11,7 @@ char FAST_FUNC get_header_tar_bz2(archive_handle_t *archive_handle)
|
||||
/* Can't lseek over pipes */
|
||||
archive_handle->seek = seek_by_read;
|
||||
|
||||
open_transformer(archive_handle->src_fd, unpack_bz2_stream_prime, "bunzip2");
|
||||
open_transformer_with_sig(archive_handle->src_fd, unpack_bz2_stream, "bunzip2");
|
||||
archive_handle->offset = 0;
|
||||
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
|
||||
@ -8,25 +8,10 @@
|
||||
|
||||
char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
|
||||
{
|
||||
#if BB_MMU
|
||||
uint16_t magic;
|
||||
#endif
|
||||
|
||||
/* Can't lseek over pipes */
|
||||
archive_handle->seek = seek_by_read;
|
||||
|
||||
/* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case).
|
||||
* Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will
|
||||
* need the header. */
|
||||
#if BB_MMU
|
||||
xread(archive_handle->src_fd, &magic, 2);
|
||||
/* Can skip this check, but error message will be less clear */
|
||||
if (magic != GZIP_MAGIC) {
|
||||
bb_error_msg_and_die("invalid gzip magic");
|
||||
}
|
||||
#endif
|
||||
|
||||
open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
|
||||
open_transformer_with_sig(archive_handle->src_fd, unpack_gz_stream, "gunzip");
|
||||
archive_handle->offset = 0;
|
||||
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
|
||||
@ -14,7 +14,7 @@ char FAST_FUNC get_header_tar_lzma(archive_handle_t *archive_handle)
|
||||
/* Can't lseek over pipes */
|
||||
archive_handle->seek = seek_by_read;
|
||||
|
||||
open_transformer(archive_handle->src_fd, unpack_lzma_stream, "unlzma");
|
||||
open_transformer_with_sig(archive_handle->src_fd, unpack_lzma_stream, "unlzma");
|
||||
archive_handle->offset = 0;
|
||||
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
|
||||
@ -6,24 +6,36 @@
|
||||
#include "libbb.h"
|
||||
#include "bb_archive.h"
|
||||
|
||||
#define ZIPPED (ENABLE_FEATURE_SEAMLESS_LZMA \
|
||||
|| ENABLE_FEATURE_SEAMLESS_BZ2 \
|
||||
|| ENABLE_FEATURE_SEAMLESS_GZ \
|
||||
/* || ENABLE_FEATURE_SEAMLESS_Z */ \
|
||||
)
|
||||
void FAST_FUNC init_transformer_aux_data(transformer_aux_data_t *aux)
|
||||
{
|
||||
memset(aux, 0, sizeof(*aux));
|
||||
}
|
||||
|
||||
#if ZIPPED
|
||||
# include "bb_archive.h"
|
||||
int FAST_FUNC check_signature16(transformer_aux_data_t *aux, int src_fd, unsigned magic16)
|
||||
{
|
||||
if (aux && aux->check_signature) {
|
||||
uint16_t magic2;
|
||||
if (full_read(src_fd, &magic2, 2) != 2 || magic2 != magic16) {
|
||||
bb_error_msg("invalid magic");
|
||||
#if 0 /* possible future extension */
|
||||
if (aux->check_signature > 1)
|
||||
xfunc_die();
|
||||
#endif
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* transformer(), more than meets the eye */
|
||||
/*
|
||||
* On MMU machine, the transform_prog is removed by macro magic
|
||||
* in include/archive.h. On NOMMU, transformer is removed.
|
||||
*/
|
||||
#if BB_MMU
|
||||
void FAST_FUNC open_transformer(int fd,
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd),
|
||||
const char *transform_prog)
|
||||
int check_signature,
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*transformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd)
|
||||
)
|
||||
#else
|
||||
void FAST_FUNC open_transformer(int fd, const char *transform_prog)
|
||||
#endif
|
||||
{
|
||||
struct fd_pair fd_pipe;
|
||||
int pid;
|
||||
@ -35,13 +47,18 @@ void FAST_FUNC open_transformer(int fd,
|
||||
close(fd_pipe.rd); /* we don't want to read from the parent */
|
||||
// FIXME: error check?
|
||||
#if BB_MMU
|
||||
transformer(fd, fd_pipe.wr);
|
||||
{
|
||||
transformer_aux_data_t aux;
|
||||
init_transformer_aux_data(&aux);
|
||||
aux.check_signature = check_signature;
|
||||
transformer(&aux, fd, fd_pipe.wr);
|
||||
if (ENABLE_FEATURE_CLEAN_UP) {
|
||||
close(fd_pipe.wr); /* send EOF */
|
||||
close(fd);
|
||||
}
|
||||
/* must be _exit! bug was actually seen here */
|
||||
_exit(EXIT_SUCCESS);
|
||||
}
|
||||
#else
|
||||
{
|
||||
char *argv[4];
|
||||
@ -64,26 +81,21 @@ void FAST_FUNC open_transformer(int fd,
|
||||
}
|
||||
|
||||
|
||||
#if SEAMLESS_COMPRESSION
|
||||
|
||||
/* Used by e.g. rpm which gives us a fd without filename,
|
||||
* thus we can't guess the format from filename's extension.
|
||||
*/
|
||||
#if ZIPPED
|
||||
void FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
|
||||
int FAST_FUNC setup_unzip_on_fd(int fd, int fail_if_not_detected)
|
||||
{
|
||||
const int fail_if_not_detected = 1;
|
||||
union {
|
||||
uint8_t b[4];
|
||||
uint16_t b16[2];
|
||||
uint32_t b32[1];
|
||||
} magic;
|
||||
int offset = -2;
|
||||
# if BB_MMU
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*xformer)(int src_fd, int dst_fd);
|
||||
enum { xformer_prog = 0 };
|
||||
# else
|
||||
enum { xformer = 0 };
|
||||
const char *xformer_prog;
|
||||
# endif
|
||||
USE_FOR_MMU(IF_DESKTOP(long long) int FAST_FUNC (*xformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd);)
|
||||
USE_FOR_NOMMU(const char *xformer_prog;)
|
||||
|
||||
/* .gz and .bz2 both have 2-byte signature, and their
|
||||
* unpack_XXX_stream wants this header skipped. */
|
||||
@ -91,21 +103,15 @@ void FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
|
||||
if (ENABLE_FEATURE_SEAMLESS_GZ
|
||||
&& magic.b16[0] == GZIP_MAGIC
|
||||
) {
|
||||
# if BB_MMU
|
||||
xformer = unpack_gz_stream;
|
||||
# else
|
||||
xformer_prog = "gunzip";
|
||||
# endif
|
||||
USE_FOR_MMU(xformer = unpack_gz_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "gunzip";)
|
||||
goto found_magic;
|
||||
}
|
||||
if (ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
&& magic.b16[0] == BZIP2_MAGIC
|
||||
) {
|
||||
# if BB_MMU
|
||||
xformer = unpack_bz2_stream;
|
||||
# else
|
||||
xformer_prog = "bunzip2";
|
||||
# endif
|
||||
USE_FOR_MMU(xformer = unpack_bz2_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "bunzip2";)
|
||||
goto found_magic;
|
||||
}
|
||||
if (ENABLE_FEATURE_SEAMLESS_XZ
|
||||
@ -114,13 +120,8 @@ void FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
|
||||
offset = -6;
|
||||
xread(fd, magic.b32, sizeof(magic.b32[0]));
|
||||
if (magic.b32[0] == XZ_MAGIC2) {
|
||||
# if BB_MMU
|
||||
xformer = unpack_xz_stream;
|
||||
/* unpack_xz_stream wants fd at position 6, no need to seek */
|
||||
//xlseek(fd, offset, SEEK_CUR);
|
||||
# else
|
||||
xformer_prog = "unxz";
|
||||
# endif
|
||||
USE_FOR_MMU(xformer = unpack_xz_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "unxz";)
|
||||
goto found_magic;
|
||||
}
|
||||
}
|
||||
@ -132,24 +133,23 @@ void FAST_FUNC setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/)
|
||||
IF_FEATURE_SEAMLESS_XZ("/xz")
|
||||
" magic");
|
||||
xlseek(fd, offset, SEEK_CUR);
|
||||
return;
|
||||
return 1;
|
||||
|
||||
found_magic:
|
||||
# if !BB_MMU
|
||||
# if BB_MMU
|
||||
open_transformer_with_no_sig(fd, xformer);
|
||||
# else
|
||||
/* NOMMU version of open_transformer execs
|
||||
* an external unzipper that wants
|
||||
* file position at the start of the file */
|
||||
xlseek(fd, offset, SEEK_CUR);
|
||||
open_transformer_with_sig(fd, xformer, xformer_prog);
|
||||
# endif
|
||||
open_transformer(fd, xformer, xformer_prog);
|
||||
return 0;
|
||||
}
|
||||
#endif /* ZIPPED */
|
||||
|
||||
int FAST_FUNC open_zipped(const char *fname)
|
||||
{
|
||||
#if !ZIPPED
|
||||
return open(fname, O_RDONLY);
|
||||
#else
|
||||
char *sfx;
|
||||
int fd;
|
||||
|
||||
@ -162,20 +162,21 @@ int FAST_FUNC open_zipped(const char *fname)
|
||||
sfx++;
|
||||
if (ENABLE_FEATURE_SEAMLESS_LZMA && strcmp(sfx, "lzma") == 0)
|
||||
/* .lzma has no header/signature, just trust it */
|
||||
open_transformer(fd, unpack_lzma_stream, "unlzma");
|
||||
open_transformer_with_sig(fd, unpack_lzma_stream, "unlzma");
|
||||
else
|
||||
if ((ENABLE_FEATURE_SEAMLESS_GZ && strcmp(sfx, "gz") == 0)
|
||||
|| (ENABLE_FEATURE_SEAMLESS_BZ2 && strcmp(sfx, "bz2") == 0)
|
||||
|| (ENABLE_FEATURE_SEAMLESS_XZ && strcmp(sfx, "xz") == 0)
|
||||
) {
|
||||
setup_unzip_on_fd(fd /*, fail_if_not_detected: 1*/);
|
||||
setup_unzip_on_fd(fd, /*fail_if_not_detected:*/ 1);
|
||||
}
|
||||
}
|
||||
|
||||
return fd;
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif /* SEAMLESS_COMPRESSION */
|
||||
|
||||
void* FAST_FUNC xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p)
|
||||
{
|
||||
int fd;
|
||||
|
||||
@ -1077,7 +1077,7 @@ static char* FAST_FUNC make_new_name_lzop(char *filename, const char *expected_e
|
||||
return xasprintf("%s.lzo", filename);
|
||||
}
|
||||
|
||||
static IF_DESKTOP(long long) int FAST_FUNC pack_lzop(unpack_info_t *info UNUSED_PARAM)
|
||||
static IF_DESKTOP(long long) int FAST_FUNC pack_lzop(transformer_aux_data_t *aux UNUSED_PARAM)
|
||||
{
|
||||
if (option_mask32 & OPT_DECOMPRESS)
|
||||
return do_lzo_decompress();
|
||||
|
||||
@ -236,7 +236,7 @@ static void extract_cpio(int fd, const char *source_rpm)
|
||||
archive_handle->src_fd = fd;
|
||||
/*archive_handle->offset = 0; - init_handle() did it */
|
||||
|
||||
setup_unzip_on_fd(archive_handle->src_fd /*, fail_if_not_detected: 1*/);
|
||||
setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_detected:*/ 1);
|
||||
while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
}
|
||||
|
||||
@ -42,6 +42,26 @@ static unsigned skip_header(void)
|
||||
return sizeof(header) + len;
|
||||
}
|
||||
|
||||
#if SEAMLESS_COMPRESSION
|
||||
static void handle_SIGCHLD(int signo UNUSED_PARAM)
|
||||
{
|
||||
int status;
|
||||
|
||||
/* Wait for any child without blocking */
|
||||
for (;;) {
|
||||
if (wait_any_nohang(&status) < 0)
|
||||
/* wait failed?! I'm confused... */
|
||||
return;
|
||||
if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
|
||||
/* this child exited with 0 */
|
||||
continue;
|
||||
/* Cannot happen?
|
||||
if (!WIFSIGNALED(status) && !WIFEXITED(status)) ???; */
|
||||
bb_got_signal = 1;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* No getopt required */
|
||||
int rpm2cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
@ -66,54 +86,23 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv)
|
||||
/* Skip the main header */
|
||||
skip_header();
|
||||
|
||||
#if 0
|
||||
#if SEAMLESS_COMPRESSION
|
||||
/* We need to know whether child (gzip/bzip/etc) exits abnormally */
|
||||
signal(SIGCHLD, handle_SIGCHLD);
|
||||
#endif
|
||||
|
||||
/* This works, but doesn't report uncompress errors (they happen in child) */
|
||||
setup_unzip_on_fd(rpm_fd /*fail_if_not_detected: 1*/);
|
||||
setup_unzip_on_fd(rpm_fd, /*fail_if_not_detected:*/ 1);
|
||||
if (bb_copyfd_eof(rpm_fd, STDOUT_FILENO) < 0)
|
||||
bb_error_msg_and_die("error unpacking");
|
||||
#else
|
||||
/* BLOAT */
|
||||
{
|
||||
union {
|
||||
uint8_t b[4];
|
||||
uint16_t b16[2];
|
||||
uint32_t b32[1];
|
||||
} magic;
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*unpack)(int src_fd, int dst_fd);
|
||||
|
||||
xread(rpm_fd, magic.b16, sizeof(magic.b16[0]));
|
||||
if (magic.b16[0] == GZIP_MAGIC) {
|
||||
unpack = unpack_gz_stream;
|
||||
} else
|
||||
if (ENABLE_FEATURE_SEAMLESS_BZ2
|
||||
&& magic.b16[0] == BZIP2_MAGIC
|
||||
) {
|
||||
unpack = unpack_bz2_stream;
|
||||
} else
|
||||
if (ENABLE_FEATURE_SEAMLESS_XZ
|
||||
&& magic.b16[0] == XZ_MAGIC1
|
||||
) {
|
||||
xread(rpm_fd, magic.b32, sizeof(magic.b32[0]));
|
||||
if (magic.b32[0] != XZ_MAGIC2)
|
||||
goto no_magic;
|
||||
/* unpack_xz_stream wants fd at position 6, no need to seek */
|
||||
//xlseek(rpm_fd, -6, SEEK_CUR);
|
||||
unpack = unpack_xz_stream;
|
||||
} else {
|
||||
no_magic:
|
||||
bb_error_msg_and_die("no gzip"
|
||||
IF_FEATURE_SEAMLESS_BZ2("/bzip2")
|
||||
IF_FEATURE_SEAMLESS_XZ("/xz")
|
||||
" magic");
|
||||
}
|
||||
if (unpack(rpm_fd, STDOUT_FILENO) < 0)
|
||||
bb_error_msg_and_die("error unpacking");
|
||||
}
|
||||
#endif
|
||||
|
||||
if (ENABLE_FEATURE_CLEAN_UP) {
|
||||
close(rpm_fd);
|
||||
}
|
||||
|
||||
return 0;
|
||||
#if SEAMLESS_COMPRESSION
|
||||
return bb_got_signal;
|
||||
#else
|
||||
return EXIT_SUCCESS;
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -690,31 +690,6 @@ static llist_t *append_file_list_to_list(llist_t *list)
|
||||
# define append_file_list_to_list(x) 0
|
||||
#endif
|
||||
|
||||
#if ENABLE_FEATURE_SEAMLESS_Z
|
||||
static char FAST_FUNC get_header_tar_Z(archive_handle_t *archive_handle)
|
||||
{
|
||||
/* Can't lseek over pipes */
|
||||
archive_handle->seek = seek_by_read;
|
||||
|
||||
/* do the decompression, and cleanup */
|
||||
if (xread_char(archive_handle->src_fd) != 0x1f
|
||||
|| xread_char(archive_handle->src_fd) != 0x9d
|
||||
) {
|
||||
bb_error_msg_and_die("invalid magic");
|
||||
}
|
||||
|
||||
open_transformer(archive_handle->src_fd, unpack_Z_stream, "uncompress");
|
||||
archive_handle->offset = 0;
|
||||
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
|
||||
/* Can only do one file at a time */
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
#else
|
||||
# define get_header_tar_Z NULL
|
||||
#endif
|
||||
|
||||
#ifdef CHECK_FOR_CHILD_EXITCODE
|
||||
/* Looks like it isn't needed - tar detects malformed (truncated)
|
||||
* archive if e.g. bunzip2 fails */
|
||||
@ -843,6 +818,8 @@ enum {
|
||||
OPT_NUMERIC_OWNER = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER )) + 0, // numeric-owner
|
||||
OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
|
||||
OPT_OVERWRITE = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE )) + 0, // overwrite
|
||||
|
||||
OPT_ANY_COMPRESS = (OPT_BZIP2 | OPT_LZMA | OPT_GZIP | OPT_COMPRESS),
|
||||
};
|
||||
#if ENABLE_FEATURE_TAR_LONG_OPTIONS
|
||||
static const char tar_longopts[] ALIGN1 =
|
||||
@ -901,7 +878,6 @@ static const char tar_longopts[] ALIGN1 =
|
||||
int tar_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||
int tar_main(int argc UNUSED_PARAM, char **argv)
|
||||
{
|
||||
char FAST_FUNC (*get_header_ptr)(archive_handle_t *) = get_header_tar;
|
||||
archive_handle_t *tar_handle;
|
||||
char *base_dir = NULL;
|
||||
const char *tar_filename = "-";
|
||||
@ -1017,18 +993,6 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
|
||||
tar_handle->ah_flags |= ARCHIVE_O_TRUNC;
|
||||
}
|
||||
|
||||
if (opt & OPT_GZIP)
|
||||
get_header_ptr = get_header_tar_gz;
|
||||
|
||||
if (opt & OPT_BZIP2)
|
||||
get_header_ptr = get_header_tar_bz2;
|
||||
|
||||
if (opt & OPT_LZMA)
|
||||
get_header_ptr = get_header_tar_lzma;
|
||||
|
||||
if (opt & OPT_COMPRESS)
|
||||
get_header_ptr = get_header_tar_Z;
|
||||
|
||||
if (opt & OPT_NOPRESERVE_TIME)
|
||||
tar_handle->ah_flags &= ~ARCHIVE_RESTORE_DATE;
|
||||
|
||||
@ -1081,7 +1045,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
|
||||
} else {
|
||||
if (ENABLE_FEATURE_TAR_AUTODETECT
|
||||
&& flags == O_RDONLY
|
||||
&& get_header_ptr == get_header_tar
|
||||
&& !(opt & OPT_ANY_COMPRESS)
|
||||
) {
|
||||
tar_handle->src_fd = open_zipped(tar_filename);
|
||||
if (tar_handle->src_fd < 0)
|
||||
@ -1115,7 +1079,30 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
|
||||
tar_handle->reject, zipMode);
|
||||
}
|
||||
|
||||
while (get_header_ptr(tar_handle) == EXIT_SUCCESS)
|
||||
if (opt & OPT_ANY_COMPRESS) {
|
||||
USE_FOR_MMU(IF_DESKTOP(long long) int FAST_FUNC (*xformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd);)
|
||||
USE_FOR_NOMMU(const char *xformer_prog;)
|
||||
|
||||
if (opt & OPT_COMPRESS)
|
||||
USE_FOR_MMU(xformer = unpack_Z_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "uncompress";)
|
||||
if (opt & OPT_GZIP)
|
||||
USE_FOR_MMU(xformer = unpack_gz_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "gunzip";)
|
||||
if (opt & OPT_BZIP2)
|
||||
USE_FOR_MMU(xformer = unpack_bz2_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "bunzip2";)
|
||||
if (opt & OPT_LZMA)
|
||||
USE_FOR_MMU(xformer = unpack_lzma_stream;)
|
||||
USE_FOR_NOMMU(xformer_prog = "unlzma";)
|
||||
|
||||
open_transformer_with_sig(tar_handle->src_fd, xformer, xformer_prog);
|
||||
/* Can't lseek over pipes */
|
||||
tar_handle->seek = seek_by_read;
|
||||
/*tar_handle->offset = 0; - already is */
|
||||
}
|
||||
|
||||
while (get_header_tar(tar_handle) == EXIT_SUCCESS)
|
||||
continue;
|
||||
|
||||
/* Check that every file that should have been extracted was */
|
||||
@ -1131,5 +1118,9 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
|
||||
if (ENABLE_FEATURE_CLEAN_UP /* && tar_handle->src_fd != STDIN_FILENO */)
|
||||
close(tar_handle->src_fd);
|
||||
|
||||
#ifdef CHECK_FOR_CHILD_EXITCODE
|
||||
return bb_got_signal;
|
||||
#else
|
||||
return EXIT_SUCCESS;
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -249,15 +249,17 @@ static void unzip_extract(zip_header_t *zip_header, int dst_fd)
|
||||
bb_copyfd_exact_size(zip_fd, dst_fd, size);
|
||||
} else {
|
||||
/* Method 8 - inflate */
|
||||
inflate_unzip_result res;
|
||||
if (inflate_unzip(&res, zip_header->formatted.cmpsize, zip_fd, dst_fd) < 0)
|
||||
transformer_aux_data_t aux;
|
||||
init_transformer_aux_data(&aux);
|
||||
aux.bytes_in = zip_header->formatted.cmpsize;
|
||||
if (inflate_unzip(&aux, zip_fd, dst_fd) < 0)
|
||||
bb_error_msg_and_die("inflate error");
|
||||
/* Validate decompression - crc */
|
||||
if (zip_header->formatted.crc32 != (res.crc ^ 0xffffffffL)) {
|
||||
if (zip_header->formatted.crc32 != (aux.crc32 ^ 0xffffffffL)) {
|
||||
bb_error_msg_and_die("crc error");
|
||||
}
|
||||
/* Validate decompression - size */
|
||||
if (zip_header->formatted.ucmpsize != res.bytes_out) {
|
||||
if (zip_header->formatted.ucmpsize != aux.bytes_out) {
|
||||
/* Don't die. Who knows, maybe len calculation
|
||||
* was botched somewhere. After all, crc matched! */
|
||||
bb_error_msg("bad length");
|
||||
|
||||
@ -59,7 +59,7 @@ wait
|
||||
Example 1
|
||||
|
||||
One example how to reduce global data usage is in
|
||||
archival/libarchive/decompress_gunzip.c:
|
||||
archival/libarchive/decompress_unzip.c:
|
||||
|
||||
/* This is somewhat complex-looking arrangement, but it allows
|
||||
* to place decompressor state either in bss or in
|
||||
|
||||
@ -156,12 +156,6 @@ struct BUG_tar_header {
|
||||
|
||||
|
||||
|
||||
/* 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;
|
||||
|
||||
archive_handle_t *init_handle(void) FAST_FUNC;
|
||||
|
||||
char filter_accept_all(archive_handle_t *archive_handle) FAST_FUNC;
|
||||
@ -204,40 +198,46 @@ int start_bunzip(bunzip_data **bdp, int in_fd, const void *inbuf, int len) FAST_
|
||||
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 {
|
||||
/* Meaning and direction (input/output) of the fields are transformer-specific */
|
||||
typedef struct transformer_aux_data_t {
|
||||
smallint check_signature; /* most often referenced member */
|
||||
off_t bytes_out;
|
||||
uint32_t crc;
|
||||
} inflate_unzip_result;
|
||||
off_t bytes_in; /* used in unzip code only: needs to know packed size */
|
||||
uint32_t crc32;
|
||||
time_t mtime; /* gunzip code may set this on exit */
|
||||
} transformer_aux_data_t;
|
||||
|
||||
IF_DESKTOP(long long) int inflate_unzip(inflate_unzip_result *res, off_t compr_size, int src_fd, int dst_fd) FAST_FUNC;
|
||||
/* xz unpacker takes .xz stream from offset 6 */
|
||||
IF_DESKTOP(long long) int unpack_xz_stream(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 src_fd, int dst_fd) 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;
|
||||
void init_transformer_aux_data(transformer_aux_data_t *aux) FAST_FUNC;
|
||||
int FAST_FUNC check_signature16(transformer_aux_data_t *aux, int src_fd, unsigned magic16) FAST_FUNC;
|
||||
|
||||
IF_DESKTOP(long long) int inflate_unzip(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
IF_DESKTOP(long long) int unpack_Z_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
IF_DESKTOP(long long) int unpack_gz_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
IF_DESKTOP(long long) int unpack_bz2_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
IF_DESKTOP(long long) int unpack_lzma_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
IF_DESKTOP(long long) int unpack_xz_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) FAST_FUNC;
|
||||
|
||||
char* append_ext(char *filename, const char *expected_ext) FAST_FUNC;
|
||||
int bbunpack(char **argv,
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(unpack_info_t *info),
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*unpacker)(transformer_aux_data_t *aux),
|
||||
char* FAST_FUNC (*make_new_name)(char *filename, const char *expected_ext),
|
||||
const char *expected_ext
|
||||
) 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)
|
||||
int check_signature,
|
||||
IF_DESKTOP(long long) int FAST_FUNC (*transformer)(transformer_aux_data_t *aux, int src_fd, int dst_fd)
|
||||
) FAST_FUNC;
|
||||
#define open_transformer_with_sig(fd, transformer, transform_prog) open_transformer((fd), 1, (transformer))
|
||||
#define open_transformer_with_no_sig(fd, transformer) open_transformer((fd), 0, (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)
|
||||
void open_transformer(int fd, const char *transform_prog) FAST_FUNC;
|
||||
#define open_transformer_with_sig(fd, transformer, transform_prog) open_transformer((fd), (transform_prog))
|
||||
/* open_transformer_with_no_sig() does not exist on NOMMU */
|
||||
#endif
|
||||
|
||||
|
||||
POP_SAVED_FUNCTION_VISIBILITY
|
||||
|
||||
#endif
|
||||
|
||||
@ -721,17 +721,15 @@ extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAS
|
||||
|| ENABLE_FEATURE_SEAMLESS_GZ \
|
||||
|| ENABLE_FEATURE_SEAMLESS_Z)
|
||||
|
||||
#if SEAMLESS_COMPRESSION
|
||||
/* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
|
||||
#if ENABLE_FEATURE_SEAMLESS_LZMA \
|
||||
|| ENABLE_FEATURE_SEAMLESS_BZ2 \
|
||||
|| ENABLE_FEATURE_SEAMLESS_GZ \
|
||||
/* || ENABLE_FEATURE_SEAMLESS_Z */
|
||||
extern void setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC;
|
||||
#else
|
||||
# define setup_unzip_on_fd(...) ((void)0)
|
||||
#endif
|
||||
extern int setup_unzip_on_fd(int fd, int fail_if_not_detected) FAST_FUNC;
|
||||
/* Autodetects .gz etc */
|
||||
extern int open_zipped(const char *fname) FAST_FUNC;
|
||||
#else
|
||||
# define setup_unzip_on_fd(...) (0)
|
||||
# define open_zipped(fname) open((fname), O_RDONLY);
|
||||
#endif
|
||||
extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
|
||||
|
||||
extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user