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| author | Denys Vlasenko | 2012-03-06 16:27:48 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2012-03-06 16:27:48 +0100 |
| commit | 8a6a2f9c9c214b94bd945acd97ac8b28c25e194e (patch) | |
| tree | 08b9a2af482bb50a7e369c01f9e9083680543fd4 /archival/libarchive/decompress_bunzip2.c | |
| parent | 774bce8e8ba1e424c953e8f13aee8f0778c8a911 (diff) | |
| download | busybox-8a6a2f9c9c214b94bd945acd97ac8b28c25e194e.zip busybox-8a6a2f9c9c214b94bd945acd97ac8b28c25e194e.tar.gz | |
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>
Diffstat (limited to 'archival/libarchive/decompress_bunzip2.c')
| -rw-r--r-- | archival/libarchive/decompress_bunzip2.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/archival/libarchive/decompress_bunzip2.c b/archival/libarchive/decompress_bunzip2.c index c4640d4..dc252bb 100644 --- a/archival/libarchive/decompress_bunzip2.c +++ b/archival/libarchive/decompress_bunzip2.c @@ -721,7 +721,7 @@ void FAST_FUNC dealloc_bunzip(bunzip_data *bd) /* Decompress src_fd to dst_fd. Stops at end of bzip data, not end of file. */ IF_DESKTOP(long long) int FAST_FUNC -unpack_bz2_stream(int src_fd, int dst_fd) +unpack_bz2_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) { IF_DESKTOP(long long total_written = 0;) bunzip_data *bd; @@ -729,6 +729,9 @@ unpack_bz2_stream(int src_fd, int dst_fd) int i; unsigned len; + if (check_signature16(aux, src_fd, BZIP2_MAGIC)) + return -1; + outbuf = xmalloc(IOBUF_SIZE); len = 0; while (1) { /* "Process one BZ... stream" loop */ @@ -794,17 +797,6 @@ unpack_bz2_stream(int src_fd, int dst_fd) return i ? i : IF_DESKTOP(total_written) + 0; } -IF_DESKTOP(long long) int FAST_FUNC -unpack_bz2_stream_prime(int src_fd, int dst_fd) -{ - uint16_t magic2; - xread(src_fd, &magic2, 2); - if (magic2 != BZIP2_MAGIC) { - bb_error_msg_and_die("invalid magic"); - } - return unpack_bz2_stream(src_fd, dst_fd); -} - #ifdef TESTING static char *const bunzip_errors[] = { @@ -819,7 +811,7 @@ int main(int argc, char **argv) int i; char c; - int i = unpack_bz2_stream_prime(0, 1); + int i = unpack_bz2_stream(0, 1); if (i < 0) fprintf(stderr, "%s\n", bunzip_errors[-i]); else if (read(STDIN_FILENO, &c, 1)) |