Denys Vlasenko [Sun, 25 Nov 2018 17:52:47 +0000 (18:52 +0100)]
tls: fix comments
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 16:27:48 +0000 (17:27 +0100)]
tls: add a comment on expanding list of supported ciphers
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 15:17:26 +0000 (16:17 +0100)]
tls: do not leak RSA key
function old new delta
tls_handshake 1957 2059 +102
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 13:45:55 +0000 (14:45 +0100)]
tls: code shrink
function old new delta
xwrite_and_update_handshake_hash 81 80 -1
tls_handshake 1987 1957 -30
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 13:28:32 +0000 (14:28 +0100)]
tls: code shrink
function old new delta
tls_handshake 1993 1987 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 13:03:59 +0000 (14:03 +0100)]
tls: code shrink
function old new delta
aesgcm_GHASH 223 196 -27
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 11:01:44 +0000 (12:01 +0100)]
tls: on x86, use xorbuf_aligned_AES_BLOCK_SIZE() even with non-aligned source
function old new delta
aesgcm_GHASH 228 223 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 23:53:19 +0000 (00:53 +0100)]
tls: actually fill in CIPHER_ID3 value in hello message
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 23:42:56 +0000 (00:42 +0100)]
ntpd: do not SEGV on "-p keyno:192.168.1.1", show --help instead
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 20:56:21 +0000 (21:56 +0100)]
wget: code shrink
function old new delta
base64enc 53 46 -7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 20:26:20 +0000 (21:26 +0100)]
tls: fix is.gd again, fix AES-CBC using decrypt key instead of encrypt
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 13:08:29 +0000 (14:08 +0100)]
tls: speed up xor'ing of aligned 16-byte buffers
function old new delta
xorbuf_aligned_AES_BLOCK_SIZE - 23 +23
xwrite_encrypted 585 580 -5
aesgcm_GHASH 233 228 -5
GMULT 192 187 -5
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 23/-15) Total: 8 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 12:51:46 +0000 (13:51 +0100)]
tls: in AES-GCM decoding, avoid memmove
function old new delta
xorbuf3 - 36 +36
xorbuf 24 12 -12
tls_xread_record 656 634 -22
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 36/-34) Total: 2 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 24 Nov 2018 12:47:44 +0000 (13:47 +0100)]
tls: fix a thinko in GHASH optimization
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 18:24:57 +0000 (19:24 +0100)]
tls: make tls_get_random() FAST_FUNC
function old new delta
tls_handshake 1977 1985 +8
tls_get_random 32 28 -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 8/-4) Total: 4 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 18:14:52 +0000 (19:14 +0100)]
wget: print the final newline only for non-tty output
$ busybox wget URL 2>&1 | cat
Connecting to ....
install.iso 0% | | 2629k 0:02:05 ETA
install.iso 7% |** | 25.7M 0:00:23 ETA
install.iso 16% |***** | 54.1M 0:00:14 ETA
install.iso 20% |****** | 67.4M 0:00:15 ETA
install.iso 25% |******** | 81.0M 0:00:14 ETA
install.iso 30% |********* | 97.3M 0:00:13 ETA
install.iso 36% |*********** | 117M 0:00:12 ETA
install.iso 41% |************* | 134M 0:00:11 ETA
install.iso 47% |*************** | 152M 0:00:10 ETA
install.iso 54% |***************** | 176M 0:00:08 ETA
install.iso 61% |******************* | 200M 0:00:06 ETA
install.iso 66% |********************* | 215M 0:00:06 ETA
install.iso 71% |********************** | 231M 0:00:05 ETA
install.iso 75% |************************ | 244M 0:00:04 ETA
install.iso 79% |************************* | 257M 0:00:03 ETA
install.iso 84% |*************************** | 275M 0:00:02 ETA
install.iso 91% |***************************** | 297M 0:00:01 ETA
install.iso 99% |******************************* | 321M 0:00:00 ETA
install.iso 100% |********************************| 323M 0:00:00 ETA
<-- no empty line here
$
function old new delta
bb_progress_update 622 632 +10
progress_meter 152 158 +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 16/0) Total: 16 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 18:07:05 +0000 (19:07 +0100)]
tls: code shrink
function old new delta
aesgcm_GHASH 262 233 -29
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 18:00:12 +0000 (19:00 +0100)]
tls: typo fix in comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 17:55:15 +0000 (18:55 +0100)]
tls: make local buffers in aesgcm_GHASH() explicitly 32-bit aligned
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 17:48:20 +0000 (18:48 +0100)]
tls: code shrink
function old new delta
xwrite_encrypted 599 585 -14
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 17:31:26 +0000 (18:31 +0100)]
tls: simplify aesgcm_GHASH()
function old new delta
xwrite_encrypted 604 599 -5
FlattenSzInBits 52 - -52
aesgcm_GHASH 395 262 -133
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-190) Total: -190 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 17:02:44 +0000 (18:02 +0100)]
tls: in AES-CBC code, do not set key for every record - do it once
function old new delta
aes_setkey 16 212 +196
tls_handshake 1941 1977 +36
aes_encrypt_1 382 396 +14
xwrite_encrypted 605 604 -1
tls_xread_record 659 656 -3
aes_encrypt_one_block 65 59 -6
aes_cbc_encrypt 172 121 -51
aesgcm_setkey 58 - -58
aes_cbc_decrypt 958 881 -77
KeyExpansion 188 - -188
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 3/5 up/down: 246/-384) Total: -138 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 23 Nov 2018 16:21:38 +0000 (17:21 +0100)]
tls: add support for TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 cipher
function old new delta
xwrite_encrypted 209 605 +396
GHASH - 395 +395
aes_encrypt_1 - 382 +382
GMULT - 192 +192
tls_xread_record 489 659 +170
aes_encrypt_one_block - 65 +65
aesgcm_setkey - 58 +58
FlattenSzInBits - 52 +52
tls_handshake 1890 1941 +51
xwrite_and_update_handshake_hash 46 81 +35
xorbuf - 24 +24
aes_setkey - 16 +16
psRsaEncryptPub 413 421 +8
stty_main 1221 1227 +6
ssl_client_main 138 143 +5
next_token 841 845 +4
spawn_ssl_client 218 219 +1
volume_id_probe_hfs_hfsplus 564 563 -1
read_package_field 232 230 -2
i2cdetect_main 674 672 -2
fail_hunk 139 136 -3
parse_expr 891 883 -8
curve25519 802 793 -9
aes_cbc_decrypt 971 958 -13
xwrite_handshake_record 43 - -43
aes_cbc_encrypt 644 172 -472
------------------------------------------------------------------------------
(add/remove: 9/1 grow/shrink: 9/8 up/down: 1860/-553) Total: 1307 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Christoph Schulz [Tue, 20 Nov 2018 16:45:52 +0000 (17:45 +0100)]
ash: reset tokpushback before prompting while parsing heredoc
The parser reads from an already freed memory location, thereby causing
unpredictable results, in the following situation:
- ENABLE_ASH_EXPAND_PRMT is enabled
- heredoc is being parsed
- command substitution is used within heredoc
Examples where this bug crops up are (PS2 is set to "> "):
$ cat <<EOF
> `echo abc`
> EOF
-sh: O: not found
$ cat <<EOF
> $(echo abc)
> EOF
-sh: {garbage}: not found
The presumable reason is that setprompt_if() causes a nested expansion when
ENABLE_ASH_EXPAND_PRMT is enabled, therefore leaving "wordtext" in an unusable
state. However, when parseheredoc() is called, "tokpushback" is non-zero, which
causes the next call to xxreadtoken() to return TWORD, causing the caller to
use the invalid "wordtoken" instead of reading the next valid token.
The call chain is:
list()
-> peektoken() [sets tokpushback to 1]
-> parseheredoc()
-> setprompt_if()
-> pushstackmark()
-> expandstr()
-> readtoken1()
[sets lasttoken to TWORD, wordtoken points to expanded prompt]
-> popstackmark() [invalidates wordtoken, leaves lasttoken as is]
-> readtoken1()
-> ...parsebackq
-> list()
-> andor()
-> pipeline()
-> readtoken()
-> xxreadtoken()
[tokpushback non-zero, reuse lasttoken and wordtext]
Note that in almost all other contexts, each call to setprompt_if() is preceded
by setting "tokpushback" to zero. One exception is "oldstyle" backquote parsing
in readtoken1(), but there "tokpushback" is reset afterwards. The other
exception is nlprompt(), but this function is only used within readtoken1()
(but in contexts where no nested calls to xxreadtoken() occur) and xxreadtoken()
(where "tokpushback" is guaranteed to be zero).
function old new delta
parseheredoc 124 131 +7
Signed-off-by: Christoph Schulz <develop@kristov.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 19 Nov 2018 19:36:16 +0000 (20:36 +0100)]
scripts/trylink: be more clever when deciding that "lib elimination" has finished:
Before:
Trying libraries: crypt m resolv
Library crypt is not needed, excluding it
Library m is needed, can't exclude it (yet)
Library resolv is needed, can't exclude it (yet)
Library m is needed, can't exclude it (yet)
Library resolv is needed, can't exclude it (yet)
Final link with: m resolv
After:
Trying libraries: crypt m resolv
Library crypt is not needed, excluding it
Library m is needed, can't exclude it (yet)
Library resolv is needed, can't exclude it (yet)
Final link with: m resolv
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 18 Nov 2018 18:50:24 +0000 (19:50 +0100)]
tls: add comment, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Sun, 18 Nov 2018 07:40:40 +0000 (07:40 +0000)]
Ensure build works when KBUILD_OUTPUT is set, closes 11511
The build process for embedded scripts didn't have consistent
support for saving output to a different directory.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Sun, 18 Nov 2018 18:12:26 +0000 (19:12 +0100)]
busybox: add '--show SCRIPT' option to display scripts
Add an option to allow the content of embedded scripts to be
displayed. This includes applet scripts, custom scripts and the
.profile script.
function old new delta
busybox_main 624 701 +77
find_script_by_name - 24 +24
scripted_main 41 35 -6
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 101/-6) Total: 95 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Sat, 17 Nov 2018 17:48:14 +0000 (17:48 +0000)]
Treat custom and applet scripts as applets
BusyBox has support for embedded shell scripts. Two types can be
distinguished: custom scripts and scripts implementing applets.
Custom scripts should be placed in the 'embed' directory at build
time. They are given a default applet configuration and appear
as applets to the user but no further configuration is possible.
Applet scripts are integrated with the BusyBox build system and
are intended to be used to ship standard applets that just happen
to be implemented as scripts. They can be configured at build time
and appear just like native applets.
Such scripts should be placed in the 'applets_sh' directory. A stub
C program should be written to provide the usual applet configuration
details and placed in a suitable subsystem directory. It may be
helpful to have a configuration option to enable any dependencies the
script requires: see the 'nologin' applet for an example.
function old new delta
scripted_main - 41 +41
applet_names 2773 2781 +8
applet_main 1600 1604 +4
i2cdetect_main 672 674 +2
applet_suid 100 101 +1
applet_install_loc 200 201 +1
applet_flags 100 101 +1
packed_usage 33180 33179 -1
tryexec 159 152 -7
evalcommand 1661 1653 -8
script_names 9 - -9
packed_scripts 123 114 -9
complete_cmd_dir_file 826 811 -15
shellexec 271 254 -17
find_command 1007 990 -17
busybox_main 642 624 -18
run_applet_and_exit 100 78 -22
find_script_by_name 51 - -51
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 6/9 up/down: 58/-174) Total: -116 bytes
text data bss dec hex filename
950034 477 7296 957807 e9d6f busybox_old
949918 477 7296 957691 e9cfb busybox_unstripped
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Mon, 12 Nov 2018 21:10:54 +0000 (21:10 +0000)]
ash: ensure variables are fully initialised when unset
When a variable is unset by calling setvar(name, NULL, 0) the code
to initialise the new, empty variable fails to initialise the last
character of the string.
Attempts to read the contents of the unset variable will result
in the uninitialised character at the end of the string being
accessed.
For example, running BusyBox under Valgrind and unsetting PATH:
$ valgrind ./busybox_unstripped sh
==21249== Memcheck, a memory error detector
==21249== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==21249== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==21249== Command: ./busybox_unstripped sh
==21249==
/data2/git/build_fix_8721 $ unset PATH
/data2/git/build_fix_8721 $ 0
==21249== Conditional jump or move depends on uninitialised value(s)
==21249== at 0x451371: path_advance (ash.c:2555)
==21249== by 0x456E22: find_command (ash.c:13407)
==21249== by 0x458425: evalcommand (ash.c:10139)
==21249== by 0x454CBC: evaltree (ash.c:9131)
==21249== by 0x456C80: cmdloop (ash.c:13164)
Closes https://bugs.busybox.net/show_bug.cgi?id=8721
v2: On the dash mailing list Harald van Dijk was kind enough to point
out a flaw in my reasoning and provide an alternative patch. Sadly
his patch adds 2 bytes of bloat. Using xzalloc to zero the whole
string gives a bloat of -3 bytes.
function old new delta
setvar 172 169 -3
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Fri, 9 Nov 2018 12:00:39 +0000 (12:00 +0000)]
hush: correct description for HUSH_TICK config option
The HUSH_TICK configuration option enables command substitution,
not process substitution.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 14 Nov 2018 10:35:36 +0000 (11:35 +0100)]
tls: code shrink
function old new delta
spawn_ssl_client 219 218 -1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 13 Nov 2018 11:00:19 +0000 (12:00 +0100)]
wget: print "TLS certificate validation not implemented" only once on redirects
function old new delta
spawn_ssl_client 209 219 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 13 Nov 2018 10:58:53 +0000 (11:58 +0100)]
tls: code shrink
function old new delta
tls_get_zeroed_outbuf - 28 +28
static.empty_client_cert 7 - -7
tls_handshake 1930 1890 -40
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 28/-47) Total: -19 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 13 Nov 2018 10:44:32 +0000 (11:44 +0100)]
tls: tidy up recently added ECDSA code
function old new delta
tls_handshake 1935 1930 -5
static.OID_ECDSA_KEY_ALG 21 11 -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-15) Total: -15 bytes
text data bss dec hex filename
950036 477 7296 957809 e9d71 busybox_old
950048 477 7296 957821 e9d7d busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 13 Nov 2018 02:15:15 +0000 (03:15 +0100)]
tls: code shrink
function old new delta
static.f25519_one 32 - -32
curve25519 835 802 -33
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-65) Total: -65 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 13 Nov 2018 01:16:24 +0000 (02:16 +0100)]
tls: add support for ECDHE-ECDSA-AES-128-CBC-SHA and x25519 curve
function old new delta
curve25519 - 835 +835
tls_handshake 1619 1935 +316
xc_diffadd - 230 +230
fe_mul__distinct - 149 +149
lm_sub - 103 +103
lm_add - 82 +82
fe_mul_c - 74 +74
fe_select - 45 +45
static.f25519_one - 32 +32
static.basepoint9 - 32 +32
static.OID_ECDSA_KEY_ALG - 21 +21
static.OID_RSA_KEY_ALG - 13 +13
static.supported_groups - 8 +8
static.empty_client_cert - 7 +7
der_binary_to_pstm 40 42 +2
static.expected 13 - -13
------------------------------------------------------------------------------
(add/remove: 14/1 grow/shrink: 2/0 up/down: 1949/-13) Total: 1936 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Mon, 5 Nov 2018 13:13:08 +0000 (13:13 +0000)]
ash: minor fixes
Ensure that login_sh is initialised in procargs even when running
an embedded script.
The argc argument to ash_main isn't unused when embedded scripts
are present.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 4 Nov 2018 23:18:18 +0000 (00:18 +0100)]
tls: code shrink
function old new delta
tls_handshake 1643 1619 -24
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 4 Nov 2018 20:25:41 +0000 (21:25 +0100)]
tls: reorder a few more cipher ids
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 4 Nov 2018 20:18:29 +0000 (21:18 +0100)]
tls: move TLS_AES_128_GCM_SHA256 definition up
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 4 Nov 2018 19:53:54 +0000 (20:53 +0100)]
tls: add more cipher ids, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 3 Nov 2018 22:34:03 +0000 (23:34 +0100)]
udhcpc: code shrink
function old new delta
perform_release 112 172 +60
send_release 81 - -81
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 60/-81) Total: -21 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 2 Nov 2018 13:20:54 +0000 (14:20 +0100)]
remove FAST_FUNC on a static function
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 2 Nov 2018 13:18:36 +0000 (14:18 +0100)]
scripts/embedded_scripts: do not add superfluous NUL to script_names[]
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Fri, 2 Nov 2018 13:14:31 +0000 (14:14 +0100)]
libarchive: add a function to unpack embedded data
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>
Denys Vlasenko [Thu, 1 Nov 2018 13:53:04 +0000 (14:53 +0100)]
svlogd: fix pattern matching when using timestamps
function old new delta
svlogd_main 1488 1496 +8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 1 Nov 2018 12:58:16 +0000 (13:58 +0100)]
busybox: show embedded scripts in applet list
function old new delta
busybox_main 624 642 +18
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 1 Nov 2018 11:51:10 +0000 (12:51 +0100)]
lineedit: autocompletion for embedded scripts
function old new delta
complete_cmd_dir_file 811 826 +15
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 1 Nov 2018 11:50:33 +0000 (12:50 +0100)]
ash: fix thinko in last commit
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 1 Nov 2018 10:45:03 +0000 (11:45 +0100)]
ash: in tryexec(), ensure we don't try to run embedded scripts as applets
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Thu, 1 Nov 2018 10:04:47 +0000 (11:04 +0100)]
ash: recognize embedded scripts in SH_STANDALONE mode
function old new delta
find_script_by_name - 51 +51
shellexec 254 271 +17
find_command 990 1007 +17
evalcommand 1653 1661 +8
doCommands 2233 2222 -11
run_applet_and_exit 128 100 -28
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 6/4 up/down: 104/-52) Total: 52 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 1 Nov 2018 09:28:04 +0000 (10:28 +0100)]
claenups for previous commit
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 1 Nov 2018 08:53:25 +0000 (09:53 +0100)]
ash: allow shell scripts to be embedded in the binary
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>
Ron Yorston [Tue, 26 Apr 2016 14:23:38 +0000 (15:23 +0100)]
vi: remove duplicated code
At worst show_status_line() might be called needlessly when the
user presses ^L/^R, but I don't think we'll get many complaints
about that.
function old new delta
do_cmd 4592 4558 -34
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-34) Total: -34 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Rasmus Villemoes [Wed, 12 Sep 2018 14:06:37 +0000 (16:06 +0200)]
libbb/u_signal_names.c: don't check errno after bb_strtou
Since we're comparing the return value to a smallish integer anyway, we
might as well use that bb_strtou() returns UINT_MAX for malformed
input. Referencing errno is kinda bloaty on glibc.
While NSIG is not in POSIX, we do already rely on it being defined,
compile-time const and smallish, since arrays in struct globals_misc are
defined in terms of it.
function old new delta
get_signum 312 286 -26
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Rasmus Villemoes [Wed, 12 Sep 2018 14:06:36 +0000 (16:06 +0200)]
libbb: optionally honour libc provided SIGRTMIN/SIGRTMAX in get_signum()
When an application documents that it responds such and such to
SIGRTMIN+n, that almost always means with respect to the libc-provided
SIGRTMIN. Hence I disagree with the "more correct" in commit
7b276fc17594. In any case, this is rather unfortunate:
36
34
(the first shell is bash). We probably can't change default behaviour
after 7 years, but at least we can provide a config option.
We avoid a little code generation (repeated calls to
__libc_current_sigrtmin) by stashing SIGRTMIN/SIGRTMAX in local
variables, but it does cost ~50 bytes. The next patch serves as penance
for that.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 30 Oct 2018 22:24:18 +0000 (23:24 +0100)]
printf: fix printf "%u\n" +
18446744073709551614
function old new delta
conv_strtoll 19 32 +13
conv_strtoull 49 61 +12
bb_strtoll 89 84 -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 25/-5) Total: 20 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 30 Oct 2018 22:07:26 +0000 (23:07 +0100)]
ntpd: default to FEATURE_NTP_AUTH=y
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 30 Oct 2018 16:04:52 +0000 (17:04 +0100)]
dd: do not have 'ocount' variable if ibs/obs support is not enabled
function old new delta
packed_usage 32964 32961 -3
dd_main 1033 1021 -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-15) Total: -15 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Rostislav Skudnov [Mon, 15 Oct 2018 10:26:15 +0000 (10:26 +0000)]
dd: add 'oflag=seek_bytes'
Allow specifying position in the output file in bytes instead of
obs-sized blocks, improve compatibility with GNU dd.
function old new delta
dd_main 1632 1693 +61
packed_usage 33130 33150 +20
static.oflag_words - 12 +12
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 93/0) Total: 93 bytes
Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 30 Oct 2018 13:40:17 +0000 (14:40 +0100)]
xargs: fix exit code if command exits nonzero, closes 11381
No code size change on x86.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Guillermo Rodriguez [Tue, 30 Oct 2018 12:49:51 +0000 (13:49 +0100)]
free: add 'available' memory if provided by the kernel
Show estimated available memory if this is provided by the
kernel. See [1] for the full story.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=
34e431b0ae398fc54ea69ff85ec700722c9da773
function old new delta
free_main 537 633 +96
parse_cached_kb 85 - -85
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 96/-85) Total: 11 bytes
Signed-off-by: Guillermo Rodriguez <guille.rodriguez@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Jiřà Prchal [Thu, 4 Oct 2018 07:02:27 +0000 (09:02 +0200)]
examples/udhcp/simple.script: add possibility to use modern "ip"
Script uses "ifconfig" only, not up-to-date so much.
This patch adds "ip" in condition if exists.
Signed-off-by: Jiřà Prchal <jiri.prchal@aksignal.cz>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 30 Oct 2018 10:56:18 +0000 (11:56 +0100)]
udhcpc: ensure at least one unicast renew attempt
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Brandon P. Enochs [Sat, 27 Oct 2018 16:55:59 +0000 (18:55 +0200)]
ntpd: add support for MD5/SHA1 message authentication
Add support for MD5 message authentication as described in RFC 5905.
This patch also supports SHA1 authentication.
The key file format is the same file format as used by ntpd.
The configuration file format follows standard Unix conventions
(# comments) with lines consist of the following fields separated by whitespace:
<key identifier, [1,65535]> <SHA1|MD5> <an ASCII string of up to 20 characters|an octet string [a-zA-F0-9] of up to 40 characters>.
https://www.ietf.org/rfc/rfc5905.txt
function old new delta
ntp_init 473 987 +514
hash - 125 +125
recv_and_process_peer_pkt 889 961 +72
packed_usage 33066 33130 +64
ntpd_main 1226 1277 +51
find_key_entry - 29 +29
add_peers 195 207 +12
recv_and_process_client_pkt 509 514 +5
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 6/0 up/down: 872/0) Total: 872 bytes
Signed-off-by: Brandon P. Enochs <enochs.brandon@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 24 Oct 2018 13:51:38 +0000 (15:51 +0200)]
nbd-client: support newstyle protocol, -b, -d, -p, -N
Recognize the "newstyle" protocol and switch to it automatically.
Add options for setting blocksize (-b) and for disconnecting
a nbd device (-d).
function old new delta
nbdclient_main 492 1179 +687
static.long_options - 80 +80
print_direc 438 457 +19
brctl_main 1169 1183 +14
bb_strtoll 84 89 +5
packed_usage 33082 33066 -16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/1 up/down: 805/-16) Total: 789 bytes
Signed-off-by: Elvira Khabirova <lineprinter@altlinux.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Bernhard Reutner-Fischer [Fri, 19 Oct 2018 13:25:41 +0000 (15:25 +0200)]
printf: fix printing +-prefixed numbers
Thanks to Cristian Ionescu-Idbohrn for noticing.
Also fix "%d" ' 42' to skip leading whitespace.
function old new delta
print_direc 435 454 +19
bb_strtoll 99 103 +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 23/0) Total: 23 bytes
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Bernhard Reutner-Fischer [Fri, 2 Mar 2018 16:39:36 +0000 (17:39 +0100)]
brctl: use a single buffer for brname and ifname
function old new delta
brctl_main 1681 1675 -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-6) Total: -6 bytes
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Denys Vlasenko [Sun, 30 Sep 2018 14:56:56 +0000 (16:56 +0200)]
unzip: use printable_string() for printing filenames
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>
Brandon Maier [Fri, 21 Sep 2018 17:54:05 +0000 (12:54 -0500)]
ifupdown: support "source-directory" stanza
Support the "source-directory" stanza from ifupdown[1]. source-directory
will include all files in the named directory. Similar to the Busybox
version of the "source" stanza, this version of source-directory does
not currently support shell wildcards.
We only check that the stanza starts with "source-dir" as ifupdown does[2].
[1] https://manpages.debian.org/stretch/ifupdown/interfaces.5.en.html#INCLUDING_OTHER_FILES
[2] https://salsa.debian.org/debian/ifupdown/blob/0.8.33/config.c#L498
function old new delta
read_interfaces 1150 1241 +91
Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 28 Sep 2018 13:13:04 +0000 (15:13 +0200)]
move storage helpers to libbb.h
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 28 Sep 2018 12:44:09 +0000 (14:44 +0200)]
udhcpc: give SIGUSR1-induced renew one chance of unicast renew
The caps were inconsistent: timeout to renew was capped at 20 seconds,
and any renews with timeout <= 60 seconds were forced to broadcast.
function old new delta
udhcpc_main 2683 2680 -3
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Martin Kaiser [Mon, 24 Sep 2018 19:00:47 +0000 (21:00 +0200)]
.gitignore: add ctags output files
Exuberant ctags creates an output file called "tags" by default or
"TAGS" when it's run in emacs mode. Add those two files to .gitignore so
they won't be removed by git clean -df.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Martin Kaiser [Mon, 24 Sep 2018 19:01:51 +0000 (21:01 +0200)]
mdev.txt: explain the meaning of a leading "-"
If a line in mdev.conf starts with "-", parsing will continue even if
a match is found in that line.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 25 Sep 2018 10:50:54 +0000 (12:50 +0200)]
sed: fix double-free in FEATURE_CLEAN_UP code
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 23 Sep 2018 18:27:32 +0000 (20:27 +0200)]
date: do not allow "month #20" and such, closes 11356
function old new delta
parse_datestr 906 961 +55
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Thomas De Schampheleire [Thu, 13 Sep 2018 13:01:46 +0000 (15:01 +0200)]
head: convert existing tests to new-style
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Thomas De Schampheleire [Thu, 13 Sep 2018 13:01:45 +0000 (15:01 +0200)]
head: add test case for negative -n invocation
Commit
2da9724b56169f00bd7fb6b9a11c9409a7620981 broke 'head -n -1' and was
later reverted with
0d598ab9f03dbf320f7b81c05e4a94cb303dfbc7.
This commit adds a test case to avoid future breakage.
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 22 Sep 2018 17:30:40 +0000 (19:30 +0200)]
init: hopefully fix "rebooting" in containers
function old new delta
pause_and_low_level_reboot 48 57 +9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 13 Sep 2018 10:15:36 +0000 (12:15 +0200)]
ntpd: more verbose message for "root distance too high" case
Managed to make ntpd on one of my machines to be stuck getting
"root distance too high" all the time, but log is not giving me
more informatin what exactly is happening...
function old new delta
select_and_cluster 1045 1095 +50
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Chen Yu [Tue, 4 Sep 2018 07:26:22 +0000 (15:26 +0800)]
remove_file: don't call rmdir if remove_file return failure
When deleting a directory, the directory should not be removed if the
file in the subdirectory fails to be deleted.
Background information:
When I tested the kernel using LTP (linux-test-project).I found the
mv command have some issue. The LTP test case use the mv command to
move the directory t1 in the cgroup file system to the /tmp directory.
becase files in the cgroup file system are not allowed to be removed.
so the mv reported "Permission denied", but I used the ls command to
view the results and found that the directory t1 had been removed
from the cgroup file system. For the same test case, I used the mv
tool in the GNU coreutils, and the directory t1 will not be removed.
the following testcase use busybox mv:
/ # mount -t cgroup -o cpu cgroup /cpu
/ # cd /cpu
/cpu # mkdir -p t1
/cpu # ls
cgroup.clone_children cpu.cfs_period_us cpu.stat t1
cgroup.procs cpu.cfs_quota_us notify_on_release tasks
cgroup.sane_behavior cpu.shares release_agent
/cpu # mv t1 /tmp
mv: can't remove 't1/cgroup.procs': Operation not permitted
mv: can't remove 't1/cpu.cfs_period_us': Operation not permitted
mv: can't remove 't1/cpu.stat': Operation not permitted
mv: can't remove 't1/cpu.shares': Operation not permitted
mv: can't remove 't1/cpu.cfs_quota_us': Operation not permitted
mv: can't remove 't1/tasks': Operation not permitted
mv: can't remove 't1/notify_on_release': Operation not permitted
mv: can't remove 't1/cgroup.clone_children': Operation not permitted
/cpu # ls
cgroup.clone_children cpu.cfs_period_us cpu.stat cgroup.procs
cpu.cfs_quota_us notify_on_release tasks cgroup.sane_behavior
cpu.shares release_agent
/cpu #
This patch fixed it, don't call rmdir if remove_file return failure,
and under certain file systems, the mv could work normally.
Signed-off-by: Chen Yu <yu.chen3@zte.com.cn>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 4 Sep 2018 12:48:00 +0000 (14:48 +0200)]
whois: fix a possible out-of-bounds stack access
If fgets() returns incomplete string, we replace NUL with
'\n', and then trim() runs on a non-NUL-terminated buffer.
Prevent that.
While at it, bump buffer from 1k to 2k.
function old new delta
query 519 524 +5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
sagivd [Sat, 25 Aug 2018 10:49:24 +0000 (13:49 +0300)]
chcon: fix issues with recurse and retval for retained files
- recurse is not acting as expected (looks like broken old code)
- when not using verbose output, return value for retained files is 1,
which is not expected.
Signed-off-by: sagivd <sagivdev@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 3 Sep 2018 08:36:51 +0000 (10:36 +0200)]
libbb: fix potential NULL pointer use
function old new delta
unicode_conv_to_printable2 193 216 +23
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 3 Sep 2018 08:25:29 +0000 (10:25 +0200)]
libbb: fix use-after-free in copy_file
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Sep 2018 16:48:09 +0000 (18:48 +0200)]
libbb: in xmalloc_fgets(), use size_t for bb_get_chunk_from_file()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Sep 2018 16:35:29 +0000 (18:35 +0200)]
Revert "libbb: remove unnecessary variable in xmalloc_fgets"
The variable is in fact necessary.
commit
2da9724b56169f00bd7fb6b9a11c9409a7620981
Author: Quentin Rameau <quinq@fifth.space>
Date: Sun Apr 1 17:05:35 2018 +0200
libbb: remove unnecessary variable in xmalloc_fgets
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 30 Aug 2018 09:49:51 +0000 (11:49 +0200)]
smemcap: keep outputting by ignoring transient processes, take two
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Andre Goddard Rosa [Sun, 26 Aug 2018 15:37:30 +0000 (17:37 +0200)]
smemcap: keep outputting by ignoring transient processes
function old new delta
archivefile 167 176 +9
Signed-off-by: Andre Goddard Rosa <andre.rosa@lge.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Peter Korsgaard [Thu, 9 Aug 2018 09:25:22 +0000 (11:25 +0200)]
sysklogd: add timestamp option to ignore message timestamps
Some syslog producers provide inconsistent timestamps, so provide an option
to ignore the message timestamps and always locally timestamp. In order to
implement this, invert the valid-timestamp check, but only use the timestamp
if this option is not enabled.
This is in line with what what other syslogd implementations do:
From sysklogd syslogd.c:
* Sun Nov 7 12:28:47 CET 2004: Martin Schulze <joey@infodrom.org>
* Discard any timestamp information found in received syslog
* messages. This will affect local messages sent from a
* different timezone.
rsyslog's imuxsock module similary has an (enabled by default)
IgnoreTimestamp option:
https://www.rsyslog.com/doc/v8-stable/configuration/modules/imuxsock.html
function old new delta
packed_usage 32877 32912 +35
timestamp_and_log 363 376 +13
syslogd_main 1638 1641 +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 51/0) Total: 51 bytes
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 26 Aug 2018 14:32:16 +0000 (16:32 +0200)]
fix !CONFIG_FLOAT_DURATION build
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 25 Aug 2018 17:36:06 +0000 (19:36 +0200)]
ping: use setitimer() instead of ualarm()
function old new delta
sendping_tail 218 265 +47
ualarm 79 - -79
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/0 up/down: 47/-79) Total: -32 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 14 Aug 2018 09:19:09 +0000 (11:19 +0200)]
ip: tweak --help text
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 14 Aug 2018 09:04:58 +0000 (11:04 +0200)]
hush: tweak comment, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sat, 11 Aug 2018 16:44:11 +0000 (18:44 +0200)]
hush: add a comment on how globbing (should) work
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 7 Aug 2018 16:54:52 +0000 (18:54 +0200)]
ash: expand: Do not quote backslashes in unquoted parameter expansion
Upstream commit:
Date: Wed, 28 Mar 2018 18:37:51 +0800
expand: Do not quote backslashes in unquoted parameter expansion
Here is a better example:
a="/*/\nullx" b="/*/\null"; printf "%s\n" $a $b
dash currently prints
/*/\nullx
/*/\null
bash prints
/*/\nullx
/dev/null
You may argue the bash behaviour is inconsistent but it actually
makes sense. What happens is that quote removal only applies to
the original token as seen by the shell. It is never applied to
the result of parameter expansion.
Now you may ask why on earth does the second line say "/dev/null"
instead of "/dev/\null". Well that's because it is not the quote
removal step that removed the backslash, but the pathname expansion.
The fact that the /de\v does not become /dev even though it exists
is just the result of the optimisation to avoid unnecessarily
calling stat(2). I have checked POSIX and I don't see anything
that forbids this behaviour.
So going back to dash yes I think we should adopt the bash behaviour
for pathname expansion and keep the existing case semantics.
This patch does exactly that. Note that this patch does not work
unless you have already applied
https://patchwork.kernel.org/patch/
10306507/
because otherwise the optimisation mentioned above does not get
detected correctly and we will end up doing quote removal twice.
This patch also updates expmeta to handle naked backslashes at
the end of the pattern which is now possible.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
function old new delta
expmeta 618 653 +35
memtodest 146 147 +1
Tested to work with both ASH_INTERNAL_GLOB on and off.
hush does not handle this correctly.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 5 Aug 2018 18:03:04 +0000 (20:03 +0200)]
hush: adopt ash's quote_in_varexp1.tests
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 5 Aug 2018 16:04:09 +0000 (18:04 +0200)]
ash: exec: Return 126 on most errors in shellexec
Upstream commit:
Date: Sat, 19 May 2018 02:39:37 +0800
exec: Return 126 on most errors in shellexec
Currently when shellexec fails on most errors the shell will exit
with exit status 2. This patch changes it to 126 in order to avoid
ambiguities with the exit status from a successful exec.
The errors that result in 127 has also been expanded to include
ENOTDIR, ENAMETOOLONG and ELOOP.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
function old new delta
shellexec 245 254 +9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 5 Aug 2018 15:07:26 +0000 (17:07 +0200)]
ash: eval: Restore input files in evalcommand
Upstream commit:
Date: Tue, 27 Mar 2018 00:39:35 +0800
eval: Restore input files in evalcommand
When evalcommand invokes a command that modifies parsefile and
then bails out without popping the file, we need to ensure the
input file is restored so that the shell can continue to execute.
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
function old new delta
unwindfiles - 20 +20
evalcommand 1635 1653 +18
getoptscmd 584 595 +11
popallfiles 20 10 -10
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/1 up/down: 49/-10) Total: 39 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
projects / oweals / busybox.git / log