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154 Commits

Author SHA1 Message Date
Denys Vlasenko
b920a38dc0 tar: postpone creation of symlinks with "suspicious" targets. Closes 8411 
function                                             old     new   delta
data_extract_all                                     968    1038     +70
tar_main                                             952     986     +34
scan_tree                                            258     262      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 108/0)             Total: 108 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-24 17:20:13 +02:00
Denys Vlasenko
2c1258c620 Move get_unaligned_le32() macros to platform.h 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-15 20:22:25 +02:00
Denys Vlasenko
10ad622dc2 Spelling fixes in comments, documentation, tests and examples 
By klemens <ka7@github.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-04-17 16:13:32 +02:00
Kang-Che Sung
74c2215086 Fix FEATURE_{GZIP,BZIP2}_DECOMPRESS link error 
... when gzip is selected but not gunzip nor zcat, or when bzip2 is
selected but not bunzip2 nor bzcat.

This regression is introduced in b130f9f758
("Allow 'gzip -d' and 'bzip2 -d' without gunzip or bunzip2")

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-17 20:15:27 +01:00
Rostislav Skudnov
8762512fdb Replace int -> uint to avoid signed integer overflow 
An example of such an error (should be compiled with DEBUG_SANITIZE):

runtime error: left shift of 1 by 31 places cannot be represented in
type 'int'

Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-04 23:10:22 +01:00
Denys Vlasenko
06f20bf675 link: new applet 
coreutils grew itself a tiny simplistic alternative to ln:

	Usage: link FILE LINK

	Create hard LINK to FILE

function                                             old     new   delta
link_main                                              -      75     +75
packed_usage                                       31114   31131     +17
applet_names                                        2564    2569      +5
applet_main                                         1480    1484      +4
applet_install_loc                                   185     186      +1
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 102/0)             Total: 102 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-26 00:27:53 +01:00
Denys Vlasenko
590402bb55 unlzma: expand comments, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-09 14:28:25 +01:00
Denys Vlasenko
3989e5adf4 unlzma: fix erroneous "while" instead of "if". Closes 4682 
These parts of the code essentially check whether
stepping back by rep0 goes negative or not.

LZMA SDK from lzma1604.7z has the following in the corresponding places:

... = dic[dicPos - rep0 + (dicPos < rep0 ? dicBufSize : 0)]

Clearly, not loop here.

Technically, "while" here works: if condition is false (because pos
underflowed), it iterates once, adds header.dict_size (a.k.a. dicBufSize),
this makes pos positive but smaller than header.dict_size, and loop exits.

Now we'll just check for negative result of subtraction, which is less code:

function                                             old     new   delta
unpack_lzma_stream                                  2659    2641     -18

(I hope 2 Gbyte+ dictionaries won't be in use soon).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-09 14:02:55 +01:00
Denys Vlasenko
6b4f4b5284 unzip: optional support for xz 
function                                             old     new   delta
unzip_main                                          2476    2491     +15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-09 11:12:01 +01:00
Denys Vlasenko
2a0867a5ed unzip: optional support for bzip2 and lzma 
function                                             old     new   delta
unzip_main                                          2376    2476    +100
bbunpack                                             750     745      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-09 10:58:37 +01:00
Denys Vlasenko
548620c18b randomconfig fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-12-08 12:24:48 +01:00
Denys Vlasenko
9655f95d0f tar: handle pax-encoded utf8 filenames and link names. Closes 9406 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-11 17:56:45 +01:00
Denys Vlasenko
85100a7067 cpio: fix restoration of file ownership, closes 9306 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-10-12 20:56:46 +02:00
Denys Vlasenko
10c0e91786 libarchive: fix xmalloc_open_zipped_read_close() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-06-21 02:04:16 +02:00
Denys Vlasenko
e24e88697a typo fix 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-06-20 16:28:53 +02:00
Denys Vlasenko
df3ec0e2f7 libarchive: fix open_zipped() 
Last commit broke it (on both MMU and NOMMU)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-06-20 11:42:00 +02:00
Denys Vlasenko
984b0a613a libarchive: fix xmalloc_open_zipped_read_close() on NOMMU 
The somewhat new "unpack in memory" code was broken
for xmalloc_open_zipped_read_close() on NOMMU: we seek back
over signature, but then expect it to be already consumed.
Stop seeking back in this case.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-06-20 11:06:42 +02:00
Denys Vlasenko
015db5800c randomconfig fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-06-19 18:15:33 +02:00
Denys Vlasenko
3e134ebf6a *: slap on a few ALIGN1/2s where appropriate 
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

   text	   data	    bss	    dec	    hex	filename
 829901	   4086	   1904	 835891	  cc133	busybox_before
 829665	   4086	   1904	 835655	  cc047	busybox

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-22 18:09:21 +02:00
Denys Vlasenko
c4199f22d0 libbb: two new functions: wait_for_exitstatus(pid), xfchdir(fd) 
Bartosz Golaszewski proposed xfchdir()

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-01 22:12:44 +02:00
Denys Vlasenko
6bd3fff51a [g]unzip: fix recent breakage. 
Also, do emit error message we so painstakingly pass from gzip internals

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-30 23:41:53 +01:00
Denys Vlasenko
1de25a6e87 unzip: test for bad archive SEGVing 
function                                             old     new   delta
huft_build                                          1296    1300      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-26 19:33:05 +01:00
Denys Vlasenko
537389cedd tar: fix files skipped with --strip_components not resetting selinux context 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-22 13:38:09 +02:00
Denys Vlasenko
f167e4503d tar: shrink hardlink name handling code 
function                                             old     new   delta
data_extract_all                                    1069    1040     -29

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-22 13:30:34 +02:00
Denys Vlasenko
6c563e370d tar: add support for --strip-components=N 
function                                             old     new   delta
data_extract_all                                     882     995    +113
tar_longopts                                         290     309     +19
tar_main                                             938     942      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 136/0)             Total: 136 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-22 01:07:13 +02:00
Aaro Koskinen
2735bc00e3 cpio: implement -R/--owner 
Implement -R/--owner to force ownership of files.

function                                             old     new   delta
cpio_main                                            532     586     +54
get_header_cpio                                      909     939     +30
print                                                 36      65     +29
cpio_o                                               804     832     +28
cpio_TRAILER                                           -      11     +11
packed_usage                                       30667   30662      -5
static.trailer                                        11       -     -11
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 4/1 up/down: 152/-16)           Total: 136 bytes

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-16 17:24:46 +02:00
Denys Vlasenko
7b85ec30b5 *: more BUILD_BUG_ON conversions 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-13 17:17:34 +02:00
Denys Vlasenko
7f3a2a2256 join some common strings, -400 bytes 
function                                             old     new   delta
print_intel_cstates                                  499     511     +12
file_insert                                          355     364      +9
dpkg_main                                           2944    2940      -4
ifenslave_main                                       645     640      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 21/-9)              Total: 12 bytes
   text	   data	    bss	    dec	    hex	filename
 937564	    932	  17676	 956172	  e970c	busybox_old
 937164	    932	  17676	 955772	  e957c	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-08 11:24:44 +02:00
Maninder Singh
97f2f7ca7f Removes stray empty line from code 
This patch removes stray empty line from busybox code
reported by script find_stray_empty_lines

Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-07-13 03:25:46 +02:00
Denys Vlasenko
bdb540e04f tar: do not try to decode GNU extended headers as pax headers 
function                                             old     new   delta
get_header_tar                                      1736    1692     -44

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-05-11 16:55:16 +02:00
Thiago Jung Bauermann
b4059f6309 libarchive: auto-detect .Z files as well 
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-05-03 18:40:12 +02:00
Denys Vlasenko
8dff01d06a libbb: introduce and use is_prefixed_with() 
function                                             old     new   delta
is_prefixed_with                                       -      18     +18
complete_username                                     78      77      -1
man_main                                             737     735      -2
fsck_device                                          429     427      -2
unpack_ar_archive                                     80      76      -4
strip_unsafe_prefix                                  105     101      -4
singlemount                                         1054    1050      -4
rtc_adjtime_is_utc                                    90      86      -4
resolve_mount_spec                                    88      84      -4
parse_one_line                                      1029    1025      -4
parse_conf                                          1460    1456      -4
may_wakeup                                            83      79      -4
loadkmap_main                                        219     215      -4
get_irqs_from_stat                                   103      99      -4
get_header_cpio                                      913     909      -4
findfs_main                                           79      75      -4
fbsplash_main                                       1230    1226      -4
load_crontab                                         776     771      -5
expand_vars_to_list                                 1151    1146      -5
date_main                                            881     876      -5
skip_dev_pfx                                          30      24      -6
make_device                                         2199    2193      -6
complete_cmd_dir_file                                773     767      -6
run_applet_and_exit                                  715     708      -7
uudecode_main                                        321     313      -8
pwdx_main                                            197     189      -8
execute                                              568     560      -8
i2cdetect_main                                      1186    1176     -10
procps_scan                                         1242    1230     -12
procps_read_smaps                                   1017    1005     -12
process_module                                       746     734     -12
patch_main                                          1903    1891     -12
nfsmount                                            3572    3560     -12
stack_machine                                        126     112     -14
process_timer_stats                                  449     435     -14
match_fstype                                         111      97     -14
do_ipaddr                                           1344    1330     -14
open_list_and_close                                  359     343     -16
get_header_tar                                      1795    1779     -16
prepend_new_eth_table                                340     323     -17
fsck_main                                           1811    1794     -17
find_iface_state                                      56      38     -18
dnsd_main                                           1321    1303     -18
base_device                                          179     158     -21
find_keyword                                         104      82     -22
handle_incoming_and_exit                            2785    2762     -23
parse_and_put_prompt                                 774     746     -28
modinfo                                              347     317     -30
find_action                                          204     171     -33
update_passwd                                       1470    1436     -34
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540)         Total: -522 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-03-12 17:48:34 +01:00
Denys Vlasenko
8c06bc6ba1 unzip: prevent attacks via malicious filenames 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-02-10 01:30:43 +01:00
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
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
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
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
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
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
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
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
Lasse Collin
aada3126a7 xz: remove an empty line from xz_dec_lzma2.c 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:36:17 +01:00
Lasse Collin
b967e42b77 xz: make bcj_x86_test_msbyte() an inline function 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:34:06 +01:00
Lasse Collin
18714d8460 xz: add a comment about using uint32_t as vli_type 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:32:03 +01:00
Lasse Collin
9056fcecbf xz: avoid "NOTE:" in xz.h 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:28:33 +01:00
Lasse Collin
3a7b2417f9 xz: update README 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:26:03 +01:00
Lasse Collin
04f296b28a xz: omit explicit \0 from HEADER_MAGIC 
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-27 16:23:24 +01:00
Denys Vlasenko
2aec773688 rpm: use "create+rename" method of replacing existing files 
Users were reporting getting errors like
"ls: error while loading shared libraries: libc.so.6: ELF load command past end of file"
while rpm was unpacking glibc tarball.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-20 15:58:42 +01:00
Denys Vlasenko
60cb48ca50 whitespace cleanup. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-14 15:57:44 +01:00
Denys Vlasenko
4d5955e9ec decompress_uncompress: comment out a bigger chunk of debug code 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-12-05 11:08:30 +01:00
Denys Vlasenko
a8461173ba decompress_uncompress: comment out debug printout on corrupted data 
99% plus of all people who'll get corrupted archive wouldn't bother
debugging it. The rest can uncomment the code.

function                                             old     new   delta
unpack_Z_stream                                     1304    1234     -70

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-12-05 01:06:05 +01:00
Denys Vlasenko
c71547ccfc decompress_uncompress: move 'code' variable into loop - sole user 
Apparently, gcc does this optimization itself, since generated code is the same.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-12-05 01:04:54 +01:00
Denys Vlasenko
440a509849 dpkg: fix creation of .list files (were empty since b768aeb). Closes 5324 
While at it, fix filename order and free the list of names.

function                                             old     new   delta
llist_rev                                              -      21     +21
get_header_tar                                      1733    1741      +8
unpack_package                                       587     585      -2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 29/-2)              Total: 27 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-06-22 16:27:21 +02:00
Denys Vlasenko
d52c9510fd trivial small speed optimization 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-06-22 15:54:05 +02:00
Etienne Le Sueur
cfc212cdff tar: fix 256-bit encoded number decoding 
Signed-off-by: Etienne Le Sueur <elesueur@vmware.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-06-09 08:37:05 +02:00
Anthony G. Basile
6e9284db78 build system: fix build failure when only gunzip is selected 
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-05-20 12:56:17 +02:00
Denys Vlasenko
d133144d41 fix build failure when compressed help is selected, but bz2 compression is not 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-04-29 14:28:12 +02:00
Denys Vlasenko
df9196d824 Fix another build failure found with randconfig 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-04-20 18:59:14 +02:00
Denys Vlasenko
8cab66730a fix build breakage found by randconfig 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-04-20 14:48:00 +02:00
Denys Vlasenko
d29c946f93 fix trivial bug in unpack_gz_stream (wrong fd used in read) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-03-06 16:46:25 +01:00
Denys Vlasenko
b5d6ae9a33 Don't compile get_header_tar_FOO function if they are not needed 
Now get_header_tar_gz, get_header_tar_bz2, get_header_tar_lzma
are only used if dpkg is built.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-03-06 16:34:23 +01:00
Denys Vlasenko
faac1d3e6e tar,rpm2cpio: check that child decompressor did not error out 
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>
 2012-03-06 16:33:42 +01:00
Denys Vlasenko
02c3c38420 Move seamless .Z support into unpack_gz_stream 
unpack_gz_stream                                     566     643     +77
unpack_gunzip                                        123      12    -111

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-03-06 16:32:06 +01:00
Denys Vlasenko
8a6a2f9c9c 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>
 2012-03-06 16:27:48 +01:00
Denys Vlasenko
774bce8e8b archival/libarchive/decompress_unzip.c -> decompress_gunzip.c. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-03-06 16:26:20 +01:00
Denys Vlasenko
59655077c5 preparatory cleanups for seamless uncompression improvements 
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>
 2012-03-06 16:23:50 +01:00
Denys Vlasenko
6111f967f5 tar: add support for PAX-encoded path=LONGFILENAME 
function                                             old     new   delta
get_header_tar                                      1478    1759    +281

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-02-23 13:45:18 +01:00
Denys Vlasenko
c531b9a3e4 bzcat: fix unpacking of more than one file, and unpacking of zero-size bz2. Closes 4393 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-31 01:05:16 +01:00
Denys Vlasenko
f74f280a14 get_header_tar: shrink 6->64 sign extension code 
function                                             old     new   delta
getOctal                                             125     107     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-19 14:51:12 +02:00
Denys Vlasenko
d184a728cf rename archive.h to bb_archive.h. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-22 12:45:14 +02:00
Denys Vlasenko
522041ee7b regularize options which control size/speed trade 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-10 13:25:57 +02:00
Denys Vlasenko
a04e4c2266 uncompress: die on read errors 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-08-22 04:59:41 +02:00
Denys Vlasenko
251fc70e97 uncompress: fix buffer underrun by corrupted input 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-08-18 14:29:41 +02:00
Ian Wienand
954dbd3a00 tar: ignore file size (assume 0) for hardlinks 
Signed-off-by: Ian Wienand <ianw@vmware.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-07-29 08:33:47 +02:00
Denys Vlasenko
60a9414cad fix "variable 'foo' set but not used" warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-05-13 20:57:01 +02:00
Denys Vlasenko
681efe20d3 use user's shell instead of hardwired "/bin/sh" (android needs this) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-08 21:00:36 +01:00
Denys Vlasenko
b80acf58f1 tar: skip leading / and handle names like abc/..////def -> def (not ///def) 
function                                             old     new   delta
strip_unsafe_prefix                                    -     105    +105
writeFileToTarball                                   557     520     -37
get_header_tar                                      1545    1462     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-02 01:21:02 +01:00
Denys Vlasenko
5e29e26388 tar: on extract, everything up to and including last ".." is stripped 
function                                             old     new   delta
get_header_tar                                      1493    1545     +52

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-01 17:21:07 +01:00