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path: root/archival/libarchive/open_transformer.c
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2014-12-07make xmalloc_open_zipped_read_close result NUL terminatedDenys Vlasenko
Compat with xmalloc_open_read_close Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-07libarchive: add capability to unpack to mem.bufferDenys Vlasenko
The performance and number of processes for a "depmod -a" with gzipped modules was abysmal. This patch adds a code path without fork, benefiting all users of xmalloc_open_zipped_read_close. "modinfo radeon.ko.gz", a single-file reader, got 30% faster. "depmod -a", which used to fork over 800 times, got 20% faster. Heavily based on a patch by Lauri Kasanen <curaga@operamail.com> function old new delta setup_transformer_on_fd - 159 +159 transformer_write - 122 +122 fork_transformer - 112 +112 xmalloc_open_zipped_read_close 63 118 +55 read_bunzip 1866 1896 +30 xtransformer_write - 19 +19 unzip_main 2449 2462 +13 bbunpack 755 766 +11 unpack_lzma_stream 2717 2723 +6 unpack_xz_stream 2393 2397 +4 unpack_Z_stream 1173 1175 +2 inflate_unzip 111 105 -6 check_signature16 70 63 -7 unpack_bz2_stream 359 349 -10 unpack_unxz 12 - -12 unpack_unlzma 12 - -12 unpack_uncompress 12 - -12 unpack_gunzip 12 - -12 unpack_bunzip2 12 - -12 open_transformer 106 92 -14 inflate_unzip_internal 1945 1916 -29 unpack_gz_stream 693 655 -38 open_zipped 89 47 -42 setup_unzip_on_fd 142 53 -89 ------------------------------------------------------------------------------ (add/remove: 4/5 grow/shrink: 7/8 up/down: 533/-295) Total: 238 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-07Rename transformer_aux_data_t -> transformer_state_tDenys Vlasenko
No code changes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-02zcat: complain if input is not compressedDenys Vlasenko
function old new delta buffer_fill_and_print 178 191 +13 varvalue 735 743 +8 bbunpack 747 755 +8 open_zipped 85 89 +4 xmalloc_open_zipped_read_close 61 63 +2 get_addr_1 240 242 +2 fbsplash_main 1228 1230 +2 pstree_main 322 321 -1 builtin_type 121 119 -2 do_load 954 926 -28 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/3 up/down: 39/-31) Total: 8 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-01-27libbb: open_zipped() should not fail on non-compressed filesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-01-10libarchive: open_zipped() does not need to check extensions for e.g. gzipDenys Vlasenko
We only need to check for signature-less extensions, currently only .lzma. The rest can be happily autodetected. This fixes "zcat FILE_WITHOUT_GZ_EXT" case, among others. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-19tar: fix exitcode check for MMU-spawned unpacking helpersDenys Vlasenko
Testcase: tar xvzf EMPTY_FILE function old new delta open_transformer 102 106 +4 get_header_tar 1781 1785 +4 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-28code shrink in check_errors_in_children()Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06tar,rpm2cpio: check that child decompressor did not error outDenys Vlasenko
function old new delta check_errors_in_children - 57 +57 tar_main 833 848 +15 get_header_tar 1720 1733 +13 rpm2cpio_main 147 140 -7 handle_SIGCHLD 41 - -41 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 2/1 up/down: 85/-48) Total: 37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06update seamless uncompression codeDenys Vlasenko
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>
2012-03-06preparatory cleanups for seamless uncompression improvementsDenys Vlasenko
unpack_gz_stream_with_info: fix buggy error check man: fix possible accesses past the end of a string move seamless uncompression helpers from read_printf.c to open_transformer.c function old new delta show_manpage 153 212 +59 unpack_gz_stream_with_info 520 539 +19 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-22rename archive.h to bb_archive.h. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-11-03rename archival/libunarchive -> archival/libarchive; move bz/ into itDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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