Denys Vlasenko
a84db18fc7
tar,unzip: postpone creation of symlinks with "suspicious" targets
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This mostly reverts commit bc9bbeb2b8https://bugs.busybox.net/show_bug.cgi?id=8411
In particular, this interferes with unpacking of busybox-based
filesystems with links like "sbin/applet" -> "../bin/busybox".
The change is made smaller by deleting ARCHIVE_EXTRACT_QUIET flag -
it is unused since 2010, and removing conditionals on it
allows commonalizing some error message codes.
function old new delta
create_or_remember_symlink - 94 +94
create_symlinks_from_list - 64 +64
tar_main 1002 1006 +4
unzip_main 2732 2724 -8
data_extract_all 984 891 -93
unsafe_symlink_target 147 - -147
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(add/remove: 2/1 grow/shrink: 1/2 up/down: 162/-248) Total: -86 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-20 16:06:53 +01:00
Denys Vlasenko
d6f0f03b68
libarchive: move bbunpack constants to bb_archive.h
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-01 09:13:14 +01:00
Denys Vlasenko
bc9bbeb2b8
libarchive: do not extract unsafe symlinks unless $EXTRACT_UNSAFE_SYMLINKS=1
...
function old new delta
unsafe_symlink_target - 147 +147
unzip_main 2711 2732 +21
copy_file 1657 1678 +21
tar_main 999 971 -28
data_extract_all 1038 984 -54
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(add/remove: 2/0 grow/shrink: 2/2 up/down: 189/-82) Total: 107 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-10 11:52:42 +02:00
Denys Vlasenko
b920a38dc0
tar: postpone creation of symlinks with "suspicious" targets. Closes 8411
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function old new delta
data_extract_all 968 1038 +70
tar_main 952 986 +34
scan_tree 258 262 +4
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(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
984b0a613a
libarchive: fix xmalloc_open_zipped_read_close() on NOMMU
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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
6c563e370d
tar: add support for --strip-components=N
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function old new delta
data_extract_all 882 995 +113
tar_longopts 290 309 +19
tar_main 938 942 +4
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(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
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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
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(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
08f9ffc3f7
dpkg: update supported compression methods
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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
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(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
b4c11c1397
libarchive: add capability to unpack to mem.buffer
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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
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(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
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No code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2014-12-07 00:42:49 +01:00
Denys Vlasenko
2aec773688
rpm: use "create+rename" method of replacing existing files
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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
6830ade6aa
whitespace fixes. no code changes
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-15 13:58:01 +01:00
Denys Vlasenko
440a509849
dpkg: fix creation of .list files (were empty since b768aeb). Closes 5324
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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
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(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
faac1d3e6e
tar,rpm2cpio: check that child decompressor did not error out
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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
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(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
8a6a2f9c9c
update seamless uncompression code
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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
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(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
6111f967f5
tar: add support for PAX-encoded path=LONGFILENAME
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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
b8ff9357d5
suppress a "integer overflow in expression" waring on big endian. Closes 4405
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-12-05 04:54:14 +01:00
Denys Vlasenko
d184a728cf
rename archive.h to bb_archive.h. no code changes
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-22 12:45:14 +02:00
