Commit Graph

1260 Commits

Author SHA1 Message Date
Denys Vlasenko
08f9ffc3f7 dpkg: update supported compression methods
Based on a patch by Ron Yorston <rmy@tigress.co.uk>

function                                             old     new   delta
get_header_tar_xz                                      -      60     +60
filter_accept_list_reassign                          128     188     +60
unpack_package                                       585     621     +36
init_archive_deb_control                              52      76     +24
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/0 up/down: 180/0)             Total: 180 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-01-30 15:15:38 +01:00
Denys Vlasenko
11775edbfc randomconfig fixes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-22 19:37:05 +01:00
Denys Vlasenko
acb8be7217 tar: fix "tar -cJ" ignoring -J option. closes 7706
function                                             old     new   delta
tar_main                                             895     938     +43
vfork_compressor                                     206     191     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 43/-15)             Total: 28 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-11 15:34:02 +01:00
Denys Vlasenko
cfcd2399b2 make xmalloc_open_zipped_read_close result NUL terminated
Compat with xmalloc_open_read_close

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-07 00:49:55 +01:00
Denys Vlasenko
b4c11c1397 libarchive: add capability to unpack to mem.buffer
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>
2014-12-07 00:44:00 +01:00
Denys Vlasenko
e7800f351a Rename transformer_aux_data_t -> transformer_state_t
No code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-07 00:42:49 +01:00
Denys Vlasenko
184b266917 cpio: reinstate "options:" line in help text
Otherwise, help text is confusing: where do operation modes end
and where options start?

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-06-30 17:19:17 +02:00
Denys Vlasenko
a9dc7c2f59 lzop: add overflow check
See CVE-2014-4607
http://www.openwall.com/lists/oss-security/2014/06/26/20

function                                             old     new   delta
lzo1x_decompress_safe                               1010    1031     +21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-06-30 10:14:34 +02:00
Denys Vlasenko
81071e6872 unlzma: add comments about possible bug from BZ 2689
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-28 15:42:10 +01:00
Denys Vlasenko
2108a6f0b5 unlzma: move some variables in "more local" scope
No code changes as verified by objdump

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-02-28 15:05:43 +01:00
Denys Vlasenko
640ce3de07 zcat: complain if input is not compressed
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>
2014-02-02 02:06:38 +01:00
Denys Vlasenko
b664f740d9 libbb: open_zipped() should not fail on non-compressed files
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-01-27 13:02:18 +01:00
Denys Vlasenko
0f592d7fb9 tar: tighten up pax header validity check
function                                             old     new   delta
get_header_tar                                      1785    1795     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-01-10 18:02:38 +01:00
Denys Vlasenko
7c47b560a8 libarchive: open_zipped() does not need to check extensions for e.g. gzip
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>
2014-01-10 14:12:11 +01:00
Denys Vlasenko
9b2a9f0210 fix assorted unused code and wrong format specs found by cppchekc (bug 6716)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-29 16:43:33 +01:00
Daniel Borca
df0d2cd837 dpkg-deb: cosmetic correction to usage text
Signed-off-by: Daniel Borca <dborca@yahoo.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-28 12:38:25 +01:00
Denys Vlasenko
0545e3b69a tar: prevent empty file to be treated as valid tarball
function                                             old     new   delta
tar_main                                             879     895     +16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-19 17:17:48 +01:00
Denys Vlasenko
ebfa9b5aa1 tar: fix exitcode check for MMU-spawned unpacking helpers
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>
2013-11-19 14:44:04 +01:00
Denys Vlasenko
f6beef63c6 archival/*: move "config:" snippets into .c files
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-14 11:39:00 +01:00
Denys Vlasenko
ac21687309 archival/*: move "applet:" snippets into .c files, part 2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-14 11:38:18 +01:00
Denys Vlasenko
36184a487d archival/*: move "applet:" snippets into .c files
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-14 09:54:24 +01:00
Denys Vlasenko
66620fa626 archival/*: move "kbuild:" snippets into .c files
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-11-14 09:53:52 +01:00
Denys Vlasenko
5117eff6f9 Fix some compiler warnings emitted by gcc-4.8.0
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-10-16 14:21:20 +02:00
Denys Vlasenko
932e233a49 bunzip2: fix off-by-one check
stage3-armv7a_hardfp-20130209.tar.bz2, 149189948 bytes long,
md5sum b29ce23312e14eb15a143377d4a38473, was failing to unpack.

It so happened that this file has a run which exactly fills
the 90k buffer. The check was "size >= bufsize", apparently
it has to be ">".

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-10-06 22:53:14 +02:00
Denys Vlasenko
a613aa1b4c ar: better comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-09-10 16:27:08 +02:00
Peter Korsgaard
2a053a2430 ar: read_num(): fix reading fields using the entire width
ar fields are fixed length text strings (padded with spaces). Ensure
bb_strtou doesn't read past the field in case the full width is used.

The fields are only read once, so the simplest/smallest solution to me
seems to be to just pass the length to read_num() and then zero terminate
the string before passing it to bb_strtou. This does mean that the fields
MUST be read in reverse order, so some minor reshuffling was needed.

Bloat-o-meter:
function                                             old     new   delta
get_header_ar                                        394     414     +20
read_num                                              29      36      +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 27/0)               Total: 27 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-09-10 16:22:12 +02:00
SASAKI Suguru
73fbe9dc86 tar: fix tar -T to add entries in the exact order as the input list
This fixes tar to order files in tarball correctly in this case:

$ touch 1 2 3; echo -e '1\n2\n3' | tar -T- -c | tar t
1
2
3

Signed-off-by: SASAKI Suguru <suguru@sonik.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-08-15 12:19:29 +02:00
Denys Vlasenko
d0bc708cb5 unpackers: by users' request, print compression percentage if -v and DESKTOP
function                                             old     new   delta
bbunpack                                             634     731     +97

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-07-30 05:41:11 +02:00
Denys Vlasenko
26cd90c7fd unzip: survive lack of CDF on non-streaming zip files
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-07-21 02:31:08 +02:00
Denys Vlasenko
5e87e8aebb unzip: increase PEEK_FROM_END from 16k to 64k
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-07-20 15:20:46 +02:00
Rich Felker
16614e9bab *: change execl sentinels from NULL to (char*)0
Signed-off-by: Rich Felker <dalias@aerifal.cx>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-06-30 13:45:17 +02:00
Denys Vlasenko
e0a6ab698f Fix build failures caused by not compiling open_transformer.c (#2)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-15 03:23:30 +02:00
Denys Vlasenko
abbc478f1c Fix build failures caused by not compiling open_transformer.c
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-05-12 02:34:38 +02:00
Mike Frysinger
93b51819cf archival: note implicit dependencies between lzop & bbunzip
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-03-03 00:48:53 -05:00
Denys Vlasenko
507f6ea6d2 decompress_unlzma: move function, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-01 14:48:10 +01:00
Denys Vlasenko
a2d04e0702 decompress_unlzma: 10% speedup in "small" code
text	   data	    bss	    dec	    hex	filename
   1796	      0	      0	   1796	    704	decompress_unlzma.o
   1801	      0	      0	   1801	    709	decompress_unlzma.o

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-01 14:43:07 +01:00
Denys Vlasenko
c09fd27c0a decompress_unlzma: make "fast" version a bit smaller
It is not slower. In fact it seems a tiny bit faster too.

   text	   data	    bss	    dec	    hex	filename
   2827	      0	      0	   2827	    b0b	decompress_unlzma.o
   2797	      0	      0	   2797	    aed	decompress_unlzma.o

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-01 14:37:58 +01:00
Denys Vlasenko
2fe5fed2df lzop: fiq -q and OPTION_DECOMPRESS mismatch
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-03-01 08:25:45 +01:00
Mike Frysinger
08e28e806d bbunzip: fix order of flags vs bit defines
Too much code shuffling.

Reported-by: Mandeep Singh Baines <msb@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-02-28 21:28:21 -05:00
Mike Frysinger
920c1baab7 bbunzip: ignore the -q flag with the decompressors
The -q flag is used in shell scripts for suppressing output.
Have our applets swallow the flag for compatibility.

Reported-by: Mandeep Singh Baines <msb@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-02-28 17:21:50 -05:00
Denys Vlasenko
41655438c6 zcat: fix "zcat FILE" trying to do detection twice
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-28 18:37:04 +01:00
Denys Vlasenko
8e96efa323 zcat: if seamless uncompressors are defined, autodetect file's format
function                                             old     new   delta
bbunpack                                             526     622     +96
packed_usage                                       29335   29341      +6
gunzip_main                                           64      67      +3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-28 18:06:09 +01:00
Denys Vlasenko
f2d8478e56 fix error message on failure to oen /dev/null; fix zcat's help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-28 18:05:01 +01:00
Denys Vlasenko
577235dee8 code shrink in check_errors_in_children()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-28 16:38:25 +01:00
Leonid Lisovskiy
f59d563399 xz: fix put_unaligned_{l,b}e32
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 18:32:58 +01:00
Lasse Collin
380c8a0763 xz: support concatenated .xz streams
function                                             old     new   delta
xz_dec_reset                                           -      77     +77
unpack_xz_stream                                    2402    2397      -5

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 17:26:40 +01:00
Lasse Collin
433757413f xz: mention xzminidec.c in README
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 16:41:36 +01:00
Lasse Collin
c3045edec2 xz: fix incorrect XZ_BUF_ERROR
xz_dec_run() could incorrectly return XZ_BUF_ERROR if
all of the following was true:

  - The caller knows how many bytes of output to expect
    and only provides that much output space.

  - When the last output bytes are decoded, the
    caller-provided input buffer ends right before
    the LZMA2 end of payload marker. So LZMA2 won't
    provide more output anymore, but it won't know it
    yet and thus won't return XZ_STREAM_END yet.

  - A BCJ filter is in use and it hasn't left any
    unfiltered bytes in the temp buffer. This can happen
    with any BCJ filter, but in practice it's more likely
    with filters other than the x86 BCJ.

This fixes <https://bugzilla.redhat.com/show_bug.cgi?id=735408>
where Squashfs thinks that a valid file system is corrupt.
Thanks to Jindrich Novy for telling me that such a bug report
exists, Phillip Lougher for providing excellent debug info,
and other people on #fedora-ppc.

This also fixes a similar bug in single-call mode where the
uncompressed size of a XZ Block using BCJ + LZMA2 was 0 bytes
and caller provided no output space. Many empty .xz files
don't contain any Blocks and thus don't trigger this bug.

This also tweaks a closely related detail: xz_dec_bcj_run()
could call xz_dec_lzma2_run() to decode into temp buffer when
it was known to be useless. This was harmless although it
wasted a minuscule number of CPU cycles.

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 16:39:56 +01:00
Lasse Collin
a1ae2b75a7 xz: fix decoding of LZMA2 streams having no uncompressed data.
No .xz encoder creates files with empty LZMA2 streams,
but such files would still be valid and decompressors
must accept them.

Note that empty .xz files are a different thing than
empty LZMA2 streams. This bug didn't affect typical .xz
files that had no uncompressed data.

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 16:38:06 +01:00
Lasse Collin
efb800439f cz: add C++ support to xz.h
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27 16:37:18 +01:00