Denys Vlasenko
dd79e1d4d3
fix [ --help ] and [[ --help ]]
...
function old new delta
show_usage_if_dash_dash_help 72 79 +7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-08-30 17:12:34 +02:00
Shawn Landden
58598eb709
ash: optional sleep builtin
...
function old new delta
sleepcmd - 10 +10
builtintab 352 360 +8
.rodata 105264 105271 +7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 25/0) Total: 25 bytes
Signed-off-by: Shawn Landden <shawnlandden@tutanota.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-08-27 19:56:21 +02:00
Ron Yorston
5a9d2b6e02
libbb: make '--help' handling more consistent
...
Running an applet with '--help' as its only argument is treated
as a special case. If additional arguments follow '--help' the
behaviour is inconsistent:
- applets which call single_argv() print help and do nothing else;
- applets which call getopt() report "unrecognized option '--help'"
and print help anyway;
- expr says "expr: syntax error" and doesn't print help;
- printenv silently ignores '--help', prints any other variables
and doesn't print help;
- realpath says "--help: No such file or directory", prints the path
of any other files and doesn't print help.
If the first argument is '--help' ignore any other arguments and print
help. This is more consistent and most likely what the user wanted.
See also commit 6bdfbc4cb
2022-08-22 14:05:01 +02:00
Ron Yorston
298ac9507b
lineedit: get PWD from ash
...
The line editing code and ash disagree when the current directory
is changed to a symbolic link:
~ $ mkdir real
~ $ ln -s real link
~ $ cd link
~/real $ pwd
/home/rmyf36/link
Note the prompt says we're in ~/real. Bash does:
[rmy@random ~]$ cd link
[rmy@random link]$ pwd
/home/rmyf36/link
Ash uses the name supplied by the user while the line editing code
calls getcwd(3). The discrepancy can be avoided by fetching the
value of PWD from ash.
Hush calls getcwd(3) when the directory is changed
so there's no disagreement with the line editing code.
There is no standard how shells should handle cd'ing into
symlinks.
function old new delta
parse_and_put_prompt 838 869 +31
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-07-03 21:41:38 +02:00
Ron Yorston
7d1c7d8337
ash,hush: use HOME for tab completion and prompts
...
ash and hush correctly use the value of HOME for tilde expansion.
However the line editing code in libbb obtains the user's home
directory by calling getpwuid(). Thus tildes in tab completion
and prompts may be interpreted differently than in tilde expansion.
When the line editing code is invoked from a shell make it use the
shell's interpretation of tilde. This is similar to how GNU readline
and bash collaborate.
function old new delta
get_homedir_or_NULL 29 72 +43
optschanged 119 126 +7
hush_main 1204 1211 +7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 57/0) Total: 57 bytes
v2: Always check for HOME before trying the password database: this
is what GNU readline does.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-06-26 18:05:50 +02:00
Ron Yorston
95fec31be6
libbb: restore special handling of nomsg errors
...
The functions bb_perror_nomsg() and bb_perror_nomsg_and_die() are
used to print error messages where no specific information is
available. For example:
$ busybox mktemp -p /
mktemp: (null): Permission denied
mktemp(3) doesn't tell us the name of the file it tried to create.
However, printing '(null)' is a regression introduced by commit
6937487be
2022-06-26 17:17:02 +02:00
Denys Vlasenko
9b6f44e040
style fix
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-05-01 17:06:00 +02:00
Denys Vlasenko
1891fdda59
libbb/sha1: update config help text with new performance numbers
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-18 17:09:51 +01:00
Denys Vlasenko
c2e7780e52
libbb/sha256: explicitly use sha256rnds2's %xmm0 (MSG) argument
...
Else, the code seemingly does not use MSG.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-12 00:52:12 +01:00
Denys Vlasenko
1f272c06d0
whitespace fixes
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 23:03:27 +01:00
Denys Vlasenko
dda77e8376
libbb/sha1: revert last commit: pshufb is a SSSE3 insn, can't use it
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 14:53:26 +01:00
Denys Vlasenko
8154146be4
libbb/sha1: shrink unrolled x86-64 code
...
function old new delta
sha1_process_block64 3481 3384 -97
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 06:08:27 +01:00
Denys Vlasenko
6f56fa1713
libbb/sha: improve comments
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-10 15:38:10 +01:00
Denys Vlasenko
6a6c1c0ea9
whitespace fix
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 11:29:23 +01:00
Denys Vlasenko
caa9c4f707
libbb/sha256: code shrink in x86 assembly
...
function old new delta
sha256_process_block64_shaNI 32-bit 676 673 -3
sha256_process_block64_shaNI 64-bit 680 677 -3
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:50:22 +01:00
Denys Vlasenko
11bcea7ac0
libbb/sha256: code shrink in 64-bit x86
...
function old new delta
sha256_process_block64_shaNI 701 680 -21
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:42:49 +01:00
Denys Vlasenko
461a994b09
libbb/sha256: code shrink in 32-bit x86
...
function old new delta
sha256_process_block64_shaNI 697 676 -21
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:30:23 +01:00
Denys Vlasenko
c0ff0d4528
libbb/sha256: code shrink in 32-bit x86
...
function old new delta
sha256_process_block64_shaNI 713 697 -16
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 00:33:39 +01:00
Denys Vlasenko
eb8d5f3b8f
libbb/sha1: shrink x86 hardware accelerated hashing (32-bit)
...
function old new delta
sha1_process_block64_shaNI 511 507 -4
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 15:34:02 +01:00
Denys Vlasenko
eb52e7fa52
libbb/sha1: shrink x86 hardware accelerated hashing (32-bit)
...
function old new delta
sha1_process_block64_shaNI 517 511 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 15:23:26 +01:00
Denys Vlasenko
71a1cccaad
libbb/sha1: shrink x86 hardware accelerated hashing
...
function old new delta
sha1_process_block64_shaNI 32-bit 524 517 -7
sha1_process_block64_shaNI 64-bit 510 508 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 08:22:17 +01:00
Denys Vlasenko
4923f74e58
libbb/sha1: shrink unrolled x86-64 code
...
function old new delta
sha1_process_block64 3482 3481 -1
.rodata 108460 108412 -48
------------------------------------------------------------------------------
(add/remove: 1/4 grow/shrink: 0/2 up/down: 0/-49) Total: -49 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 03:29:16 +01:00
Denys Vlasenko
c193cbd6df
libbb/sha1: shrink and speed up unrolled x86-64 code
...
function old new delta
sha1_process_block64 3514 3482 -32
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-07 02:34:04 +01:00
Denys Vlasenko
987be932ed
*: slap on a few ALIGN_PTR where appropriate
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 20:07:12 +01:00
Denys Vlasenko
ca466f385a
*: slap on a few ALIGN* where appropriate
...
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"
function old new delta
.rodata 108586 108460 -126
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126) Total: -126 bytes
text data bss dec hex filename
970412 4219 1848 976479 ee65f busybox_old
970286 4219 1848 976353 ee5e1 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 19:53:10 +01:00
Denys Vlasenko
4f40735c87
libbb/sha256: code shrink in 32-bit x86
...
function old new delta
sha256_process_block64_shaNI 722 713 -9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 00:56:13 +01:00
Denys Vlasenko
31c1c31077
libbb/sha256: code shrink in 64-bit x86
...
function old new delta
sha256_process_block64_shaNI 706 701 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 00:33:42 +01:00
Denys Vlasenko
a1429fbb8c
libbb/sha256: code shrink in 64-bit x86
...
function old new delta
sha256_process_block64_shaNI 730 706 -24
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 15:17:42 +01:00
Denys Vlasenko
de6cb4bed8
libbb/sha256: code shrink in 32-bit x86
...
function old new delta
sha256_process_block64_shaNI 747 722 -25
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 15:11:23 +01:00
Denys Vlasenko
6472ac9428
libbb/sha256: optional x86 hardware accelerated hashing
...
64 bit:
function old new delta
sha256_process_block64_shaNI - 730 +730
.rodata 108314 108586 +272
sha256_begin 31 83 +52
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 2/0 up/down: 1055/-1) Total: 1054 bytes
32 bit:
function old new delta
sha256_process_block64_shaNI - 747 +747
.rodata 104318 104590 +272
sha256_begin 29 84 +55
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 2/0 up/down: 1075/-1) Total: 1074 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 14:58:02 +01:00
Denys Vlasenko
205042c07a
libbb/sha1: in unrolled x86-64 code, pass initial W[] in registers, not on stack
...
This can be faster on some CPUs.
On Skylake, evidently load latency from L1 (or store-to-load
forwarding in LSU) is fast enough to completely hide
memory reference latencies here.
function old new delta
sha1_process_block64 3495 3514 +19
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-25 17:21:45 +01:00
Denys Vlasenko
99e22d230d
cut: build fix for FEATURE_CUT_REGEX
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-24 07:07:17 +01:00
Denys Vlasenko
39369ff460
libbb/sha1: use SSE2 in unrolled x86-64 code. ~10% faster
...
function old new delta
.rodata 108241 108305 +64
sha1_process_block64 3502 3495 -7
------------------------------------------------------------------------------
(add/remove: 5/0 grow/shrink: 1/1 up/down: 64/-7) Total: 57 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-23 12:57:27 +01:00
Denys Vlasenko
1e825acf8d
libbb: shrink lineedit_read_key()
...
function old new delta
lineedit_read_key 237 231 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-18 00:36:42 +01:00
Denys Vlasenko
12566e7f9b
ash,hush: fix handling of SIGINT while waiting for interactive input
...
function old new delta
lineedit_read_key 160 237 +77
__pgetc 522 589 +67
fgetc_interactive 244 309 +65
safe_read_key - 39 +39
read_key 588 607 +19
record_pending_signo 23 32 +9
signal_handler 75 81 +6
.rodata 104312 104309 -3
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 6/1 up/down: 282/-3) Total: 279 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-17 11:46:23 +01:00
Denys Vlasenko
c2788f88f4
libbb: introduce and use chdir_or_warn()
...
function old new delta
chdir_or_warn - 37 +37
send_cgi_and_exit 720 711 -9
xchdir 27 15 -12
setup_environment 233 217 -16
fork_job 449 433 -16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 37/-53) Total: -16 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-13 12:56:10 +01:00
Denys Vlasenko
931c55f9e2
libbb: invert the meaning of SETUP_ENV_NO_CHDIR -> SETUP_ENV_CHDIR
...
Double negatives are hard to grok.
function old new delta
login_main 986 988 +2
su_main 474 470 -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-4) Total: -2 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-13 12:50:48 +01:00
Denys Vlasenko
d162a7b978
sulogin: increase util-linux compatibility
...
Change to root's HOME. Set some envvars. Steal ctty if necessary and possible.
function old new delta
sulogin_main 240 340 +100
setup_environment 225 233 +8
su_main 479 474 -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 108/-5) Total: 103 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-12 23:19:11 +01:00
Denys Vlasenko
143356876b
libbb/sha1: add a comment
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-08 22:43:24 +01:00
Denys Vlasenko
e7ff29402d
libbb/sha1: simplify cpuid code
...
function old new delta
sha1_begin 107 106 -1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-08 01:25:23 +01:00
Denys Vlasenko
805ececa61
whitespace fix
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-08 00:41:09 +01:00
Denys Vlasenko
0bab5da37e
libbb/sha1: tweak comments
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-07 14:55:31 +01:00
Denys Vlasenko
a96ccbefe4
libbb/sha1: optional i686 hardware accelerates hashing
...
function old new delta
sha1_process_block64_shaNI - 524 +524
sha1_begin 57 114 +57
.rodata 104353 104369 +16
static.shaNI - 1 +1
------------------------------------------------------------------------------
(add/remove: 4/0 grow/shrink: 2/0 up/down: 598/0) Total: 598 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-07 01:32:13 +01:00
Denys Vlasenko
711e20ecb8
libbb/sha1: optional x86-64 hardware accelerates hashing
...
function old new delta
sha1_process_block64_shaNI - 510 +510
sha1_begin 52 107 +55
.rodata 108285 108301 +16
static.shaNI - 1 +1
------------------------------------------------------------------------------
(add/remove: 4/0 grow/shrink: 2/0 up/down: 582/0) Total: 582 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-07 00:43:59 +01:00
Denys Vlasenko
6062c0d19b
libbb: change xstrndup, xmemdup to take size_t as size parameter
...
Also, remove entirely usually-disabled paranoia check (was also using
wrong config option to enable itself).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-05 23:03:54 +01:00
Denys Vlasenko
db5546ca10
libbb: code shrink: introduce and use [_]exit_SUCCESS()
...
function old new delta
exit_SUCCESS - 7 +7
_exit_SUCCESS - 7 +7
run_pipe 1562 1567 +5
pseudo_exec_argv 399 400 +1
finish 86 87 +1
start_stop_daemon_main 1109 1107 -2
shutdown_on_signal 38 36 -2
runsv_main 1662 1660 -2
redirect 1070 1068 -2
read_line 79 77 -2
pause_and_low_level_reboot 54 52 -2
list_i2c_busses_and_exit 483 481 -2
less_exit 12 10 -2
identify 4123 4121 -2
grep_file 1161 1159 -2
getty_main 1519 1517 -2
fsck_minix_main 2681 2679 -2
free_session 132 130 -2
fdisk_main 4739 4737 -2
clean_up_and_exit 53 51 -2
bsd_select 1566 1564 -2
bb_daemonize_or_rexec 198 196 -2
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/17 up/down: 21/-34) Total: -13 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-05 22:16:06 +01:00
Denys Vlasenko
dfd8aafcf5
libbb: fflush_stdout_and_exit(0) still exits with _error_ (not 0!) if fflush fails
...
function old new delta
fflush_stdout_and_exit 36 40 +4
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-04 23:36:16 +01:00
Denys Vlasenko
31f45c1b36
libbb: factor out fflush_stdout_and_exit(EXIT_SUCCESS)
...
function old new delta
fflush_stdout_and_exit_SUCCESS - 7 +7
xxd_main 890 888 -2
vlock_main 353 351 -2
uuencode_main 318 316 -2
uniq_main 427 425 -2
uname_main 250 248 -2
sort_main 853 851 -2
shuf_main 500 498 -2
route_main 238 236 -2
readlink_main 113 111 -2
nice_main 156 154 -2
last_main 957 955 -2
ipcs_main 960 958 -2
env_main 209 207 -2
chrt_main 464 462 -2
cal_main 921 919 -2
baseNUM_main 650 648 -2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/16 up/down: 7/-32) Total: -25 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-04 23:31:58 +01:00
Denys Vlasenko
c3cfcc9242
libbb/sha1: x86_64 version: reorder prologue/epilogue insns
...
Not clear exactly why, but this increases hashing speed
on Skylake from 454 MB/s to 464 MB/s.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-04 01:45:52 +01:00
Denys Vlasenko
7abb2bb96e
libbb/sha1: x86_64 version: tidying up, no code changes
...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-01-03 17:02:48 +01:00
