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Author SHA1 Message Date
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 f12fb1e409 sed: fix handling of escaped delimiters in s/// replacement 
function                                             old     new   delta
parse_regex_delim                                    111     140     +29

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-23 19:04:27 +01:00
Denys Vlasenko e998c7c032 sed: fix handling of escaped delimiters in s/// search pattern, closes 14541 
function                                             old     new   delta
copy_parsing_escapes                                  67      96     +29
parse_regex_delim                                    109     111      +2
get_address                                          213     215      +2
add_cmd                                             1176    1178      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 35/0)               Total: 35 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-23 18:48:49 +01:00
Denys Vlasenko 33a9f34df5 add busybox_ldscript.README.txt 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-23 15:46:05 +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 8ad2acf352 fix "defined but not used" warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-17 23:59:46 +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 a277506a64 shell: add comments about SIGINT-related problems 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-16 23:54:46 +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 b3eec1651f sulogin: util-linux does not say "normal startup" on Ctrl-D 
function                                             old     new   delta
sulogin_main                                         341     331     -10
.rodata                                           104327  104312     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-25)             Total: -25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-13 01:43:11 +01:00
Denys Vlasenko 96771ec5f5 sulogin: start _login_ shell only with -p 
Also, shorten/eliminate messages to be closer to util-linux.

function                                             old     new   delta
packed_usage                                       34233   34238      +5
sulogin_main                                         340     341      +1
.rodata                                           104380  104327     -53
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 6/-53)             Total: -47 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-13 01:38:47 +01:00
Denys Vlasenko 68b402ee51 ash: ^C with SIG_INGed SIGINT should not exit the shell 
function                                             old     new   delta
__pgetc                                              501     522     +21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-13 01:15:10 +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 004cefa918 reset: better --help text 
function                                             old     new   delta
packed_usage                                       34175   34233     +58

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-12 17:21:14 +01:00
Denys Vlasenko 524fecf7c3 nmeter: %[md] %[mw] - dirty file-backed pages, writeback pages 
function                                             old     new   delta
collect_mem                                          333     387     +54
.rodata                                           104369  104380     +11
packed_usage                                       34184   34175      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 65/-9)              Total: 56 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-11 19:32:16 +01:00
Denys Vlasenko ff8fda8482 ls: implement ls -sh (human-readable allocated blocks) 
function                                             old     new   delta
display_single                                       979    1018     +39

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-08 22:59:49 +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 e2952dfaff awk: input numbers are never octal or hex (only program consts can be) 
function                                             old     new   delta
next_token                                           825     930    +105
getvar_i                                             114     129     +15
nextchar                                              49      53      +4
my_strtod                                            138       -    -138
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 3/0 up/down: 124/-138)          Total: -14 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-08 22:42:35 +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 89092c61bc powertop: fix cpuid asm: ebx saving/restoring is properly done by gcc 
function                                             old     new   delta
print_intel_cstates                                  481     477      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-07 01:33:46 +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 076f5e064f less: code shrink 
function                                             old     new   delta
restore_tty                                            -      29     +29
less_main                                           2107    2105      -2
getch_nowait                                         253     251      -2
buffer_print                                         614     612      -2
less_exit                                             51      12     -39
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 29/-45)            Total: -16 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-05 22:04:21 +01:00
Denys Vlasenko 34e0bb3931 sort: support -h 
function                                             old     new   delta
static.scale_suffix                                    -      62     +62
.rodata                                           104304  104336     +32
compare_keys                                         820     848     +28
packed_usage                                       34159   34184     +25
static.suffix                                          -       9      +9
sort_opt_str                                          37      38      +1
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 4/0 up/down: 157/0)             Total: 157 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-05 12:05:55 +01:00
Denys Vlasenko cc7d2e2178 sort: fix -s -r interaction: 'stable' order is not affected by -r 
function                                             old     new   delta
compare_keys                                         818     820      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-04 23:53:21 +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 286b33721d sed: correctly handle 'w FILE' commands writing to the same file 
function                                             old     new   delta
sed_xfopen_w                                           -      84     +84

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-04 19:42:36 +01:00
Denys Vlasenko ed2af2e82d build system: detect if build host has no bzip2 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-04 14:32:41 +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 1fc520ed28 md5/shaXsum: use FEATURE_COPYBUF_KB to size the buffer instead of fixed 4k 
function                                             old     new   delta
md5_sha1_sum_main                                    536     565     +29
hash_file                                            419     401     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 29/-18)             Total: 11 bytes

In my test, for unrolled sha1, COPYBUF_KB=64 increases throughput
from 367 MB/s to 457 MB/s.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-04 00:51:04 +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
Denys Vlasenko 4387077f8e typo fix 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-03 13:14:09 +01:00
Denys Vlasenko 947bef0dea libbb/sha1: x86_64 version: generate from a script, optimize a bit 
function                                             old     new   delta
sha1_process_block64                                3569    3502     -67

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-03 13:10:30 +01:00
Denys Vlasenko 05fd13ebec libbb/sha1: x86_64 version: move to a separate .S file, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-03 12:57:36 +01:00
Denys Vlasenko 5c0c558231 libbb/sha1: code shrink in medium-speed version 
function                                             old     new   delta
sha1_process_block64                                 654     641     -13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-02 01:56:35 +01:00
Denys Vlasenko 4d4f1f2096 libbb/sha1: x86_64 version: bswap in 64-bit chunks 
function                                             old     new   delta
sha1_process_block64                                3562    3570      +8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-01 15:42:15 +01:00
Denys Vlasenko d643010fee libbb/sha1: shrink x86_64 version - use r8..15 for W[8..15] 
function                                             old     new   delta
sha1_process_block64                                3683    3562    -121

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-01 15:01:53 +01:00
Denys Vlasenko 5f68170204 libbb/sha1: assembly versions for x86 
32 bits:
function                                             old     new   delta
sha1_process_block64                                3950    3657    -293
64 bits:
sha1_process_block64                                4167    3683    -484

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-01 13:57:34 +01:00
Denys Vlasenko f09d088fdf libbb/sha1: shrink and speed up fully unrolled version 
function                                             old     new   delta
sha1_process_block64                                4149    3950    -199

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-31 17:07:47 +01:00
Denys Vlasenko 0b62a08777 libbb/sha1: add config-selectable partially unrolled version 
function                                             old     new   delta
sha1_process_block64                                 364     732    +368
static.rconsts                                        16       -     -16
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 368/-16)           Total: 352 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-30 18:54:02 +01:00
Denys Vlasenko 25aadc893d libbb/sha1: add config-selectable fully unrolled version, closes 14391 
function                                             old     new   delta
sha1_process_block64                                 364    4167   +3803
static.rconsts                                        16       -     -16
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 3803/-16)         Total: 3787 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-30 13:17:16 +01:00
Denys Vlasenko 0e2cb6d1e2 echo: add FIXME comment 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-29 07:26:23 +01:00
Denys Vlasenko 0fcc7f5f73 scripts/echo.c: fix NUL handling in "abc\0 def" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-28 21:05:59 +01:00
Denys Vlasenko f1d06462e8 libbb: cose shrink in sha1 
function                                             old     new   delta
sha1_process_block64                                 356     342     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-28 09:05:12 +01:00
Denys Vlasenko 44075929a8 Start 1.36.0 development cycle 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-26 18:40:55 +01:00
Denys Vlasenko e512aeb0fb Bump version to 1.35.0 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-26 17:55:58 +01:00
Denys Vlasenko 97c00ae134 httpd: fix compile failure if !FEATURE_HTTPD_RANGES 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-26 14:29:37 +01:00
Denys Vlasenko c1eac153e8 cmp: code shrink 
function                                             old     new   delta
.rodata                                           104203  104201      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-17 22:43:45 +01:00
Denys Vlasenko 00d10cb6eb docs/embedded-scripts.txt: whitespace fix 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-17 21:38:02 +01:00
Denys Vlasenko b720629dfe httpd: do not send Last-Modified / ETag / Content-Length for error pages 
function                                             old     new   delta
send_headers                                         713     701     -12
send_headers_and_exit                                 20      34     +14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-17 21:02:16 +01:00
Denys Vlasenko 70683faf38 httpd: don't send Content-Length in error pages header 
function                                             old     new   delta
send_headers                                         701     713     +12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-17 20:37:58 +01:00
Denys Vlasenko e67b80f473 udhcpc6: fix udhcp_find_option to actually find DHCP6 options 
udhcp_insert_new_option treats code for IPv6 as follows:

new->data[D6_OPT_CODE] = code >> 8;
new->data[D6_OPT_CODE + 1] = code & 0xff;

udhcp_find_option tests the code as follows:

while (opt_list && opt_list->data[OPT_CODE] < code)
...
if (opt_list && opt_list->data[OPT_CODE] == code)

So yes, OPT_CODE and D6_OPT_CODE are both 0, but the D6_OPT_CLIENTID =
1 value means that the 1 is in the seconds byte, and udhcp_find_option
is only looking at the first byte,  So the send_d6_release can never
find it the created option.

function                                             old     new   delta
udhcp_find_option                                     28      53     +25
attach_option                                        276     284      +8
udhcpc6_main                                        2602    2607      +5
perform_d6_release                                   262     267      +5
udhcpd_main                                         1518    1520      +2
udhcpc_main                                         2542    2544      +2
add_serverid_and_clientid_options                     46      48      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 7/0 up/down: 49/0)               Total: 49 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-12 17:13:54 +01:00
Denys Vlasenko c7b90dc4d1 uudecode: special-case "/dev/stdout", closes 14241 
function                                             old     new   delta
uudecode_main                                        295     322     +27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-12 00:34:15 +01:00
Denys Vlasenko 27df6aeef2 tls: P256: factor out "multiply then reduce" operation 
function                                             old     new   delta
sp_256_mont_mul_and_reduce_8                           -      44     +44
sp_256_ecc_mulmod_8                                  517     442     -75
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 44/-75)            Total: -31 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-11 23:27:40 +01:00
Denys Vlasenko b240733ae7 tls: x25519: code shrink by factoring out common code 
function                                             old     new   delta
fe_reduce                                              -      37     +37
lm_add                                                67      43     -24
fe_mul_c                                              62      38     -24
fe_mul__distinct                                     138     112     -26
curve25519                                           800     767     -33
lm_sub                                                98      64     -34
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/5 up/down: 37/-141)          Total: -104 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-12-01 15:09:44 +01:00
Denys Vlasenko 8514b4166d tls: P256: enable 64-bit version of montgomery reduction 
After more testing, (1) I'm more sure it is indeed correct, and
(2) it is a significant speedup - we do a lot of those multiplications.

function                                             old     new   delta
sp_512to256_mont_reduce_8                            191     223     +32

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 21:43:51 +01:00
Denys Vlasenko 90b0d33044 tls: P256: add 64-bit montgomery reduce (disabled), small optimization in 32-bit code 
function                                             old     new   delta
sp_512to256_mont_reduce_8                            191     185      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 15:44:08 +01:00
Denys Vlasenko 832626227e tls: P256: add comment on logic in sp_512to256_mont_reduce_8, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 12:55:20 +01:00
Denys Vlasenko 00b5051cd2 libbb: code shrink in des encryption, in setup_salt() 
function                                             old     new   delta
pw_encrypt                                           978     971      -7
.rodata                                           108208  108192     -16
des_crypt                                           1211    1181     -30
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-53)             Total: -53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 12:21:23 +01:00
Denys Vlasenko cfb615781d tls: P256: simplify sp_256_mont_inv_8 (no need for a temporary) 
function                                             old     new   delta
sp_256_ecc_mulmod_8                                  543     517     -26

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 11:15:34 +01:00
Denys Vlasenko 1b93c7c4ec tls: P256: pad struct sp_point to 64 bits (on 64-bit arches) 
function                                             old     new   delta
curve_P256_compute_pubkey_and_premaster              198     190      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-28 02:56:02 +01:00
Denys Vlasenko 0b13ab66f4 tls: P256: trivial x86-64 fix 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 19:36:23 +01:00
Denys Vlasenko f92ae1dc4b tls: P256: change logic so that we don't need double-wide vectors everywhere 
Change sp_256to512z_mont_{mul,sqr}_8 to not require/zero upper 256 bits.
There is only one place where we actually used that (and that's why there
used to be zeroing memset of top half!). Fix up that place.
As a bonus, 256x256->512 multiply no longer needs to care for
"r overlaps a or b" case.

This shrinks sp_point structure as well, not just temporaries.

function                                             old     new   delta
sp_256to512z_mont_mul_8                              150       -    -150
sp_256_mont_mul_8                                      -     147    +147
sp_256to512z_mont_sqr_8                                7       -      -7
sp_256_mont_sqr_8                                      -       7      +7
sp_256_ecc_mulmod_8                                  494     543     +49
sp_512to256_mont_reduce_8                            243     249      +6
sp_256_point_from_bin2x32                             73      70      -3
sp_256_proj_point_dbl_8                              353     345      -8
sp_256_proj_point_add_8                              544     499     -45
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 2/3 up/down: 209/-213)           Total: -4 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 19:27:03 +01:00
Denys Vlasenko 9c671fe3dd tls: P256: do not open-code copying of struct variables 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 18:42:27 +01:00
Denys Vlasenko dcfd8d3d10 tls: P256: fix sp_256_div2_8 - it wouldn't use a[] if low bit is 0 
It worked by chance because the only caller passed both parameters
as two pointers to the same array.
My fault (I made this error when converting from 26-bit code).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 16:24:49 +01:00
Denys Vlasenko 8cbb70365f tls: P256: remove redundant zeroing in sp_256_map_8 
Previous change made it obvious that we zero out already-zeroed high bits

function                                             old     new   delta
sp_256_ecc_mulmod_8                                  534     494     -40

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 15:50:40 +01:00
Denys Vlasenko 4415f7bc06 tls: P256: explain which functions use double-wide arrays, no code changes 
function                                             old     new   delta
sp_512to256_mont_reduce_8                              -     243    +243
sp_256to512z_mont_mul_8                                -     150    +150
sp_256to512z_mont_sqr_8                                -       7      +7
sp_256_mont_sqr_8                                      7       -      -7
sp_256_mont_mul_8                                    150       -    -150
sp_256_mont_reduce_8                                 243       -    -243
------------------------------------------------------------------------------
(add/remove: 3/3 grow/shrink: 0/0 up/down: 400/-400)            Total: 0 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 15:47:26 +01:00
Denys Vlasenko bbda85c74b tls: P256: remove constant-time trick in sp_256_proj_point_add_8 
function                                             old     new   delta
sp_256_proj_point_add_8                              576     544     -32

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 15:06:57 +01:00
Denys Vlasenko 26c8522522 tls: P256: do not open-code copying of struct variables 
function                                             old     new   delta
sp_256_ecc_mulmod_8                                  536     534      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 15:00:14 +01:00
Denys Vlasenko 446d136109 tls: tweak debug printout 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 12:03:43 +01:00
Denys Vlasenko 4bc9da1071 tls: P256: 64-bit optimizations 
function                                             old     new   delta
sp_256_proj_point_dbl_8                              421     428      +7
sp_256_point_from_bin2x32                             78      84      +6
sp_256_cmp_8                                          38      42      +4
sp_256_to_bin_8                                       28      31      +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 20/0)               Total: 20 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-27 11:28:11 +01:00
Denys Vlasenko 15f7d618ea which: add -a to help text 
function                                             old     new   delta
packed_usage                                       34075   34079      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-11-09 13:51:22 +01:00
Denys Vlasenko aaf3d5ba74 shell: tweak --help 
Even though formally it is -s [ARGS], "sh -s" without ARGS
is the same as just "sh". And we are already over 80 chars wide
for ash --help, so make it shorter.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-13 11:25:42 +02:00
Denys Vlasenko 62f1eed1e1 hush: in a comment, document what -i might be doing 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-13 00:09:07 +02:00
Denys Vlasenko 94c78aa0b9 config system: move some options closer to relevalnt tool subdirectories 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-12 13:23:29 +02:00
Denys Vlasenko 7c3e96d4b3 shell: use more compact SHELL_ASH / HUSH config defines. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-12 01:24:32 +02:00
Denys Vlasenko f4fcd74a6e shell: do not read user database for every prompt - only for those which need it 
function                                             old     new   delta
get_user_strings                                       -      52     +52
get_homedir_or_NULL                                    -      23     +23
parse_and_put_prompt                                 823     838     +15
null_str                                               1       -      -1
complete_cmd_dir_file                                814     812      -2
deinit_S                                              51      42      -9
read_line_input                                     3059    3015     -44
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/3 up/down: 90/-56)             Total: 34 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 23:08:31 +02:00
Denys Vlasenko 6ba1f2d0bc tar: prevent malicious archives with enormous long name sizes OOMing the machine 
function                                             old     new   delta
get_header_tar                                      1707    1752     +45

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 19:28:39 +02:00
Denys Vlasenko aec8fbfb83 whitespace fix 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 19:11:06 +02:00
Denys Vlasenko 5acf5e1f87 shell: fix script's comm field if ENABLE_FEATURE_PREFER_APPLETS=y 
function                                             old     new   delta
re_execed_comm                                         -      46     +46
main                                                  72      86     +14
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 60/0)               Total: 60 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 18:44:00 +02:00
Denys Vlasenko 23aba8a9a6 tls: code shrink curve25519 
function                                             old     new   delta
fe_select                                             39       -     -39
curve25519                                           849     800     -49
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-88)             Total: -88 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 16:31:47 +02:00
Denys Vlasenko 74ee3f2f73 tls: remove unused tls_symmetric.h (was used by old "big" AES code) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-11 13:46:30 +02:00
Denys Vlasenko d8e39b5917 find: code shrink -{m,a,c}{time,min} 
function                                             old     new   delta
time_cmp                                               -     181    +181
func_mmin                                            171      31    -140
func_mtime                                           180      34    -146
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/2 up/down: 181/-286)         Total: -105 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-10 15:18:12 +02:00
Denys Vlasenko d3dbf4ac05 *: add more beneficial NOINLINEs 
function                                             old     new   delta
dec_main                                               -    1729   +1729  -41 bytes
fallbackQSort3                                         -     671    +671  -70 bytes
verify_sun                                             -     481    +481 -107 bytes
verify                                              1330     742    -588
fallbackSort                                        1469     728    -741
unpack_xz_stream                                    2306     536   -1770
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 0/3 up/down: 2881/-3099)       Total: -218 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-10 14:32:05 +02:00
Denys Vlasenko 53b2fdcdba *: add NOINLINEs where code noticeably shrinks 
function                                             old     new   delta
display                                               85    1463   +1378  -73 bytes
select_and_cluster                                     -    1088   +1088 -139 bytes
parse_reply                                            -     979    +979 -109 bytes
zbc_num_sqrt                                           -     632    +632 -191 bytes
show_bridge_port                                       -     585    +585  -56 bytes
sp_256_proj_point_add_8                                -     576    +576  -45 bytes
encode_then_append_var_plusminus                       -     554    +554 -118 bytes
read_mode_db                                           -     537    +537  -47 bytes
fbset_main                                          1331     747    -584
sp_256_ecc_mulmod_8                                 1157     536    -621
brctl_main                                          2189    1548    -641
expand_one_var                                      2544    1872    -672
zxc_vm_process                                      6412    5589    -823
send_queries                                        1813     725   -1088
recv_and_process_peer_pkt                           2245    1018   -1227
bb_dump_dump                                        1531      80   -1451
------------------------------------------------------------------------------
(add/remove: 7/0 grow/shrink: 1/8 up/down: 6329/-7107)       Total: -778 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-10 13:50:53 +02:00
Denys Vlasenko 49bcf9f40c hush: speed up ${x//\*/|} too 
function                                             old     new   delta
expand_one_var                                      2502    2544     +42

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-10-09 03:52:04 +02:00