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1012 Commits

Author SHA1 Message Date
Denys Vlasenko
f0c0c56e9b hush: beautify ^D handling to match ash / bash 
function                                             old     new   delta
fgetc_interactive                                    227     244     +17

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-04-13 16:42:17 +02:00
Denys Vlasenko
cbfdeba660 hush: make LINENO selectable without BASH-COMPAT 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-03-10 16:31:05 +01:00
Ron Yorston
cad3fc743a libbb: introduce and use fputs_stdout 
function                                             old     new   delta
fputs_stdout                                           -      12     +12
zxc_vm_process                                      7237    7230      -7
yes_main                                              85      78      -7
write_block                                          380     373      -7
wrapf                                                305     298      -7
strings_main                                         437     430      -7
show_bridge                                          353     346      -7
rev_main                                             384     377      -7
put_prompt_custom                                     58      51      -7
put_cur_glyph_and_inc_cursor                         168     161      -7
print_numbered_lines                                 152     145      -7
print_named_ascii                                    130     123      -7
print_name                                           135     128      -7
print_login_issue                                    386     379      -7
print_ascii                                          208     201      -7
powertop_main                                       1249    1242      -7
od_main                                             1789    1782      -7
logread_main                                         518     511      -7
head_main                                            804     797      -7
display_process_list                                1319    1312      -7
cut_main                                            1002     995      -7
bb_dump_dump                                        1550    1543      -7
bb_ask_noecho                                        393     386      -7
baseNUM_main                                         702     695      -7
expand_main                                          755     745     -10
dumpleases_main                                      497     487     -10
write1                                                12       -     -12
putcsi                                                37      23     -14
print_login_prompt                                    55      41     -14
paste_main                                           525     511     -14
cat_main                                             440     426     -14
print_it                                             245     230     -15
print_addrinfo                                      1188    1171     -17
print_rule                                           770     750     -20
print_linkinfo                                       842     822     -20
httpd_main                                           791     771     -20
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341)         Total: -329 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-02-03 20:52:40 +01:00
Denys Vlasenko
3b053051c7 hush: code shrink 
function                                             old     new   delta
hush_main                                           1071    1066      -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-5)               Total: -5 bytes
   text	   data	    bss	    dec	    hex	filename
1020110	    559	   5020	1025689	  fa699	busybox_old
1020037	    559	   5020	1025616	  fa650	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-01-04 03:05:34 +01:00
Denys Vlasenko
3c13da3dab libbb: introduce and use xgettimeofday(), do not truncate 64-bit time_t in shells 
function                                             old     new   delta
xgettimeofday                                          -      11     +11
get_local_var_value                                  280     281      +1
svlogd_main                                         1323    1322      -1
change_epoch                                          67      66      -1
timestamp_and_log                                    461     458      -3
hwclock_main                                         301     298      -3
fmt_time_bernstein_25                                135     132      -3
step_time                                            331     326      -5
script_main                                         1207    1202      -5
machtime                                              34      28      -6
curtime                                               61      54      -7
ts_main                                              423     415      -8
nmeter_main                                          761     751     -10
gettime1900d                                          67      46     -21
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/12 up/down: 12/-73)           Total: -61 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-30 23:48:01 +01:00
Denys Vlasenko
77a51a2709 randomconfig fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-29 16:53:11 +01:00
Denys Vlasenko
c7ef818768 hush: make comment more clear 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-27 16:04:54 +01:00
Denys Vlasenko
1237d627e9 hush: fix this case: echo "SCRIPT" | hush 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-25 19:01:49 +01:00
Denys Vlasenko
46a71dc30c hush: if !EDITING, do not regenerate prompt for every input char 
function                                             old     new   delta
fgetc_interactive                                    261     258      -3
pseudo_exec_argv                                     406     399      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10)             Total: -10 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-25 18:49:29 +01:00
Denys Vlasenko
521220ed1a hush: fix ^C in INTERACTIVE, !EDITING config 
function                                             old     new   delta
refill_HFILE_and_getc                                 88     170     +82
fgetc_interactive                                    226     250     +24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 106/0)             Total: 106 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 23:44:55 +01:00
Denys Vlasenko
18bcaf374c hush: revert "make interactive ^C break out of PS2 mode" 
It made ^C break out of the entire shell, if we aren't in PS2 mode.
Need a better idea.

function                                             old     new   delta
expand_one_var                                      2344    2353      +9
syntax_error_unterm_ch                                21      29      +8
parse_dollar                                         817     824      +7
parse_stream                                        2251    2238     -13
fgetc_interactive                                    249     227     -22
syntax_error_unterm_str                               26       -     -26
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 3/2 up/down: 24/-61)            Total: -37 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 23:01:18 +01:00
Denys Vlasenko
649acb9e23 hush: fix PS1 prompth in !EDITING config 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 15:29:13 +01:00
Denys Vlasenko
a7b52d26c4 hush: fix fallout from tweaking ${var:START:LEN} code 
function                                             old     new   delta
expand_one_var                                      2344    2353      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 12:38:03 +01:00
Denys Vlasenko
93e2a22482 shell: for signal exitcode, use 128 | sig, not 128 + sig - MIPS has signal 128 
function                                             old     new   delta
wait_for_child_or_signal                             213     214      +1
refill_HFILE_and_getc                                 89      88      -1
getstatus                                             97      96      -1
builtin_wait                                         339     337      -2
checkjobs                                            187     183      -4
process_wait_result                                  450     444      -6
waitcmd                                              290     281      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/6 up/down: 1/-23)             Total: -22 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 12:23:21 +01:00
Denys Vlasenko
0ab2dd4f28 hush: fix comment 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-23 02:22:08 +01:00
Denys Vlasenko
00eb23b47a bc: do not allocate line editing state until needed 
function                                             old     new   delta
xc_read_line                                         324     353     +29
free_line_input_t                                     34      39      +5
xc_vm_init                                           656     640     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-16)             Total: 18 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-21 21:36:58 +01:00
Denys Vlasenko
07abc7c6f7 hush: deal with FIXMEs for corner cases in parameter expansion 
function                                             old     new   delta
expand_one_var                                      2323    2344     +21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-21 10:14:18 +01:00
Denys Vlasenko
bb4e32befa hush: remove one redundant getpid() on every startup 
function                                             old     new   delta
hush_main                                           1151    1147      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-20 16:36:00 +01:00
Denys Vlasenko
a8e19608fc hush: code shrink 
function                                             old     new   delta
run_applet_main                                        -      20     +20
builtin_kill                                         296     288      -8
builtin_test                                          19      10      -9
builtin_printf                                        19      10      -9
builtin_echo                                          19      10      -9
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 20/-35)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-14 03:52:54 +01:00
Denys Vlasenko
63139b531f hush: if login shell, also source ~/.profile 
function                                             old     new   delta
hush_main                                           1101    1151     +50

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 22:00:56 +01:00
Denys Vlasenko
49142d48bd hush: NOMMU fix for hush-psubst/tick6.tests 
function                                             old     new   delta
hush_main                                           1759    1766      +7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 18:44:07 +01:00
Denys Vlasenko
9cabd17e55 hush: fix -c SCRIPT handling 
function                                             old     new   delta
hush_main                                           1763    1759      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-12-13 18:24:11 +01:00
Denys Vlasenko
965b795b87 decrease paddign: gcc-9.3.1 slaps 32-byte alignment on arrays willy-nilly 
text	   data	    bss	    dec	    hex	filename
1021988	    559	   5052	1027599	  fae0f	busybox_old
1021236	    559	   5052	1026847	  fab1f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-30 13:03:03 +01:00
Denys Vlasenko
dc9c10a7b2 hush: make interactive ^C break out of PS2 mode 
function                                             old     new   delta
syntax_error_unterm_str                                -      26     +26
parse_stream                                        2238    2251     +13
fgetc_interactive                                    243     249      +6
parse_dollar                                         824     817      -7
syntax_error_unterm_ch                                29      21      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/2 up/down: 45/-15)             Total: 30 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-11-16 13:00:44 +01:00
Denys Vlasenko
a7c065354f shell: update comments on the status of [[ ]] compat 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-31 04:32:34 +01:00
Denys Vlasenko
d2241f5902 shell: better support of [[ ]] bashism 
Still rather rudimentary for ash

function                                             old     new   delta
binop                                                433     589    +156
check_operator                                        65     101     +36
done_word                                            736     769     +33
test_main                                            405     418     +13
parse_stream                                        2227    2238     +11
ops_texts                                            124     133      +9
ops_table                                             80      86      +6
run_pipe                                            1557    1562      +5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/0 up/down: 269/0)             Total: 269 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-31 03:34:07 +01:00
Denys Vlasenko
e16f7eb596 hush: output bash-compat killing signal names 
This significantly syncronises ash-signals and hush-signals tests.

function                                             old     new   delta
process_wait_result                                  449     450      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-24 04:26:43 +02:00
Denys Vlasenko
b65d6cb00f hush: do not print killing signal name in cmd_whihc_dies_on_signal 
function                                             old     new   delta
process_wait_result                                  438     449     +11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-10-24 03:33:32 +02:00
Denys Vlasenko
67e1529b92 nologin: make it possible to build it as single applet 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-06-24 15:05:22 +02:00
Denys Vlasenko
d5314e7129 suppress a few compile warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-06-24 09:31:30 +02:00
Ron Yorston
9f3b410006 ash,hush: drop pointer check before calls to show_history 
show_history() checks that its argument in non-null so there's
no need to repeat the test at call sites.

function                                             old     new   delta
historycmd                                            25      17      -8
builtin_history                                       29      21      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-16)             Total: -16 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-04-30 17:30:02 +02:00
Denys Vlasenko
e4a0612efd hush: fix negative_arith.tests: glob-protect dash in "$((arith))" 
function                                             old     new   delta
expand_vars_to_list                                 1026    1082     +56
parse_dollar                                         810     811      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 57/0)               Total: 57 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-21 17:21:34 +01:00
Denys Vlasenko
3ced804e31 hush: make "exit" in trap use pre-trap exitcode - fix for nested trap 
function                                             old     new   delta
check_and_run_traps                                  276     278      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-21 02:55:53 +01:00
Denys Vlasenko
cc9ecd9af1 hush: make "exit" in trap use pre-trap exitcode 
function                                             old     new   delta
check_and_run_traps                                  259     276     +17
builtin_exit                                          42      53     +11
hush_main                                           1086    1096     +10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 38/0)               Total: 38 bytes

Fixes exitcode_trap2.tests.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-21 02:18:06 +01:00
Denys Vlasenko
bb095f4838 hush: implement "return NUM in trap sets $? after trap" 
function                                             old     new   delta
builtin_return                                        47      67     +20
check_and_run_traps                                  243     259     +16
run_pipe                                            1583    1597     +14
hush_main                                           1076    1086     +10
run_list                                            1054    1055      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 61/0)               Total: 61 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-20 16:37:59 +01:00
Denys Vlasenko
23bc562a05 ash,hush: add comment about masked SIGCHLD, handle SIG_IGNed SIGHUP as in bash 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-02-18 16:46:01 +01:00
Ron Yorston
9e2a5668fd ash,hush: allow builtins to be tab-completed, closes 7532 
function                                             old     new   delta
complete_cmd_dir_file                                678     830    +152
get_builtin_name                                       -      35     +35
optschanged                                          125     132      +7
hush_main                                           1069    1076      +7
save_command_ps_at_cur_history                        76      78      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 203/0)             Total: 203 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-01-29 15:23:17 +01:00
Denys Vlasenko
259747caa7 hush: fix preprocessor directives indentation 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-11-28 10:28:14 +01:00
Denys Vlasenko
21806562ca hush: restore redirected stdin 
function                                             old     new   delta
restore_redirects                                     52      95     +43
save_fd_on_redirect                                  243     253     +10
hfopen                                                90      99      +9
fgetc_interactive                                    259     261      +2
builtin_type                                         117     115      -2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 64/-2)              Total: 62 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-11-01 14:16:07 +01:00
Denys Vlasenko
18a90ec846 hush: fix "set -o INVALID" affecting -e flag state 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-09-05 14:07:14 +02:00
James Byrne
6937487be7 libbb: reduce the overhead of single parameter bb_error_msg() calls 
Back in 2007, commit 0c97c9d437 ("'simple' error message functions by
Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower
overhead call to bb_perror_msg() when only a string was being printed
with no parameters. This saves space for some CPU architectures because
it avoids the overhead of a call to a variadic function. However there
has never been a simple version of bb_error_msg(), and since 2007 many
new calls to bb_perror_msg() have been added that only take a single
parameter and so could have been using bb_simple_perror_message().

This changeset introduces 'simple' versions of bb_info_msg(),
bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and
bb_herror_msg_and_die(), and replaces all calls that only take a
single parameter, or use something like ("%s", arg), with calls to the
corresponding 'simple' version.

Since it is likely that single parameter calls to the variadic functions
may be accidentally reintroduced in the future a new debugging config
option WARN_SIMPLE_MSG has been introduced. This uses some macro magic
which will cause any such calls to generate a warning, but this is
turned off by default to avoid use of the unpleasant macros in normal
circumstances.

This is a large changeset due to the number of calls that have been
replaced. The only files that contain changes other than simple
substitution of function calls are libbb.h, libbb/herror_msg.c,
libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c,
networking/udhcp/common.h and util-linux/mdev.c additonal macros have
been added for logging so that single parameter and multiple parameter
logging variants exist.

The amount of space saved varies considerably by architecture, and was
found to be as follows (for 'defconfig' using GCC 7.4):

Arm:     -92 bytes
MIPS:    -52 bytes
PPC:   -1836 bytes
x86_64: -938 bytes

Note that for the MIPS architecture only an exception had to be made
disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h)
because it made these files larger on MIPS.

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-07-02 11:35:03 +02:00
Denys Vlasenko
f3634584d0 ash,hush: show 'c' in $- if run in "sh -c CMD" 
function                                             old     new   delta
options                                              552     599     +47
expand_one_var                                      2375    2385     +10
optletters_optnames                                   60      64      +4
hush_main                                           1108    1111      +3
ash_main                                            1150    1152      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 66/0)               Total: 66 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-06-03 12:21:04 +02:00
Denys Vlasenko
d8740b265a hush: show 's' in $- 
function                                             old     new   delta
expand_one_var                                      2362    2375     +13
hush_main                                           1104    1108      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 17/0)               Total: 17 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-19 19:11:21 +02:00
Denys Vlasenko
76a4e8361a hush: allocate line edit buffer only for interactive shell 
function                                             old     new   delta
builtin_history                                       16      20      +4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-19 18:24:52 +02:00
Denys Vlasenko
ef8985c688 hush: implement $-, set default PATH if it is not set on startup 
function                                             old     new   delta
expand_one_var                                      2311    2362     +51
hush_main                                           1075    1104     +29
parse_dollar                                         790     791      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 81/0)               Total: 81 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-19 16:29:09 +02:00
Denys Vlasenko
0c36019369 hush: set default PS1/2 only if we interactive 
"env - hush SCRIPT" invocation (that is, with empty environment)
should not show PS1/2 in "set" output.

function                                             old     new   delta
hush_main                                           1070    1075      +5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-19 15:39:32 +02:00
Denys Vlasenko
08fb82c80c hush: handle LINENO the same way as RANDOM: variable is "ephemeral" 
"env - hush" invocation (that is, with empty environment)
should not show LINENO in "set" output.

function                                             old     new   delta
get_local_var_value                                  263     294     +31
hush_main                                           1105    1070     -35
handle_changed_special_names                          79      38     -41
run_pipe                                            1834    1765     -69
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 31/-145)          Total: -114 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-19 15:39:32 +02:00
Denys Vlasenko
4ebcdf7396 hush: remove code to track PS1/2 values dynamically - it's too much work 
Assignments / exports / unsets of variables are far more frequent than
prompt printing, and if we show prompt, we are likely to be limited by
user typing speed - do not optimize for that scenario.
Just re-query $PS1 / $PS2 values when need to show the prompt.

function                                             old     new   delta
fgetc_interactive                                    236     259     +23
set_vars_and_save_old                                150     147      -3
pseudo_exec_argv                                     597     594      -3
hush_main                                           1110    1105      -5
enter_var_nest_level                                  38      32      -6
builtin_local                                         56      50      -6
run_pipe                                            1857    1834     -23
leave_var_nest_level                                 127      98     -29
handle_changed_special_names                         111      79     -32
cmdedit_update_prompt                                 57       -     -57
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/8 up/down: 23/-164)          Total: -141 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-16 15:39:19 +02:00
Denys Vlasenko
0ee0b658b3 hush: small speedup in handle_changed_special_names() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-16 11:32:26 +02:00
Denys Vlasenko
9e0adb9b09 hush: fix quoted "${notexist-}" expansion to not disappear 
function                                             old     new   delta
expand_one_var                                      2296    2311     +15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-05-15 13:39:19 +02:00