| Commit message (Collapse) | Author | Age | Files | Lines |
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Some files can't be opened to fetch additional metadata. When
that happens allow stat(2) to successfully return what data it
has.
In a few cases where the inode number is used to determine if
files are identical ignore invalid inode numbers.
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Modify the WIN32 implementation of stat(2) to fetch inode number,
device id and number of hardlinks. This requires opening a handle
to the target file so it will be slower.
A number of features can be enabled or start to work:
- tar can detect if an archive is being stored in itself;
- find can support the -inum and -links options;
- ls can display inode numbers;
- diff can detect attempts to compare a file with itself;
- du has better support for hardlinked files;
- cp can detect attempts to copy a file over itself.
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Since symlinks aren't supported in busybox-w32 remove more of the
code that handles them.
Saves 64 bytes.
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The WIN32 implementation of check_errors_in_children shouldn't
have reset bb_got_signal as it's used to signal an error.
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The code to check whether a write error is due to a broken pipe
can now either:
- return with error EPIPE;
- cause the process to exit with code 128+SIGPIPE.
The default is the latter but the behaviour can be changed by issuing
signal(SIGPIPE, SIG_IGN) and signal(SIGPIPE, SIG_DFL) calls.
No actual signal is involved so kill can't send SIGPIPE and handlers
other than SIG_IGN and SIG_DFL aren't supported.
This does, however, avoid unsightly 'broken pipe' errors from commands
like the example in GitHub issue #99:
dd if=/dev/urandom | tr -dc _A-Z-a-z-0-9 | head -c${1:-32};echo;
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Embedded scripts require a shell to be present in the BusyBox
binary. Allow either ash or hush to be used for this purpose.
If both are enabled ash takes precedence.
The size of the binary is unchanged in the default configuration:
both ash and hush are present but support for embedded scripts
isn't compiled into hush.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
get_header_tar 1696 1690 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
unpack_lzma_stream 2686 2674 -12
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
is_suffixed_with - 54 +54
tar_main 1006 1026 +20
open_transformer 92 79 -13
config_file_action 478 458 -20
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/2 up/down: 74/-33) Total: 41 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Similar code to unpack embedded data is used to decompress usage
messages, embedded scripts and the config file (in the non-default
bbconfig applet).
Moving this code to a common function reduces the size of the default
build and hides more of the internals of libarchive.
function old new delta
unpack_bz2_data - 135 +135
bb_show_usage 137 157 +20
get_script_content 32 47 +15
unpack_scripts 119 - -119
unpack_usage_messages 124 - -124
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/0 up/down: 170/-243) Total: -73 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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To assist in the deployment of shell scripts it may be convenient
to embed them in the BusyBox binary.
'Embed scripts in the binary' takes any files in the directory
'embed', concatenates them with null separators, compresses them
and embeds them in the binary.
When scripts are embedded in the binary, scripts can be run as
'busybox SCRIPT [ARGS]' or by usual (sym)link mechanism.
embed/nologin is provided as an example.
function old new delta
packed_scripts - 123 +123
unpack_scripts - 87 +87
ash_main 1103 1171 +68
run_applet_and_exit 78 128 +50
get_script_content - 32 +32
script_names - 10 +10
expmeta 663 659 -4
------------------------------------------------------------------------------
(add/remove: 4/0 grow/shrink: 2/1 up/down: 370/-4) Total: 366 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
unzip_main 2726 2792 +66
printable_string2 - 57 +57
identify 4329 4336 +7
expmeta 659 663 +4
add_interface 99 103 +4
beep_main 286 289 +3
changepath 192 194 +2
builtin_type 115 117 +2
devmem_main 469 470 +1
input_tab 1076 1074 -2
create_J 1821 1819 -2
poplocalvars 314 311 -3
doCommands 2222 2214 -8
do_load 918 902 -16
printable_string 57 9 -48
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 8/6 up/down: 146/-79) Total: 67 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
vfork_compressor 257 246 -11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Reproducer:
exec 0>&-
exec 1>&-
tar czf z.tar.gz FILE
function old new delta
vfork_compressor 229 257 +28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Kconfig-language.txt was deleted in commit 4fa499a17b52b back in 2006.
Move to docs/ as suggested by Xabier Oneca:
http://lists.busybox.net/pipermail/busybox/2014-May/080914.html
Also update references to it everywhere.
Signed-off-by: Kartik Agaram <akkartik@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
unpack_lzma_stream 2669 2686 +17
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
create_or_remember_link - 106 +106
create_links_from_list - 93 +93
find_applet_by_name 124 128 +4
unzip_main 2724 2726 +2
data_extract_all 891 873 -18
create_symlinks_from_list 64 - -64
create_or_remember_symlink 94 - -94
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 2/1 up/down: 205/-176) Total: 29 bytes
Signed-off-by: Harald van Dijk <harald@gigawatt.nl>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
unpack_lzma_stream 1705 1717 +12
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
static.ar_long_names 4 - -4
static.ar_long_name_size 4 - -4
get_header_ar 546 532 -14
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-22) Total: -22 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
get_header_ar 434 442 +8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
unpack_lzma_stream 2647 2653 +6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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As it turns out, longjmp'ing into freed stack is not healthy...
function old new delta
unpack_usage_messages - 97 +97
unpack_bz2_stream 369 409 +40
get_next_block 1667 1677 +10
get_bits 156 155 -1
start_bunzip 212 183 -29
bb_show_usage 181 120 -61
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/3 up/down: 147/-91) Total: 56 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
do_lzo_compress 232 224 -8
lzo_compress 531 488 -43
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-51) Total: -51 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
lzo_compress 483 531 +48
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
lzo_compress 470 483 +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 13/0) Total: 13 bytes
text data bss dec hex filename
940011 477 7284 947772 e763c busybox_old
939976 477 7284 947737 e7619 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
do_lzo_decompress 404 427 +23
f_read32 22 - -22
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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0.94 came only 2 months after initial 0.90:
0.90 (10 Aug 1997): First public release of lzop
...
0.94 (15 Oct 1997): Header format change
function old new delta
do_lzo_decompress 411 404 -7
f_read8 24 - -24
f_read16 31 - -31
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-62) Total: -62 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
add_bytes_to_chksum 37 47 +10
lzo_decompress 524 532 +8
init_chksum 14 21 +7
chksum_getresult 13 17 +4
f_read 33 28 -5
f_write8 20 - -20
f_write32 22 - -22
f_write16 25 - -25
f_write 36 - -36
do_lzo_compress 328 232 -96
do_lzo_decompress 526 411 -115
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 4/3 up/down: 29/-319) Total: -290 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Usage: tar c|x|t [-ZzJjahmvokO] [-f TARFILE] [-C DIR] [-T FILE] [-X FILE] [--exclude PATTERN]... [FILE]...
Create, extract, or list files from a tar file
Operation: <============== DELETED
c Create
x Extract
t List
-f FILE Name of TARFILE ('-' for stdin/out)
-C DIR Change to DIR before operation
-v Verbose
-O Extract to stdout
-m Don't restore mtime
-o Don't restore user:group
-k Don't replace existing files
-Z (De)compress using compress
-z (De)compress using gzip
-J (De)compress using xz
-j (De)compress using bzip2
-a (De)compress using lzma
-h Follow symlinks
-T FILE File with names to include
-X FILE File with glob patterns to exclude
--exclude PATTERN Glob pattern to exclude
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Recent upstream changes made the failure of symlink(2) when extracting
from an archive a fatal error.
The busybox-w32 implementation of symlink(2) always fails. Just
issue a warning and move on.
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function old new delta
bb_die_memory_exhausted - 10 +10
xstrdup 28 23 -5
xsetenv 27 22 -5
xrealloc 32 27 -5
xputenv 22 17 -5
xmalloc 30 25 -5
xfdopen_helper 40 35 -5
xasprintf 44 39 -5
wget_main 2387 2382 -5
open_socket 54 49 -5
glob_brace 419 414 -5
bb_get_chunk_from_file 146 141 -5
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/11 up/down: 10/-55) Total: -45 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
cpio_main 588 596 +8
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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