Denys Vlasenko [Mon, 3 Dec 2018 13:28:51 +0000 (14:28 +0100)]
bc: eliminate BC_STATUS_INPUT_EOF
function old new delta
fflush_and_check - 36 +36
bc_num_a 445 456 +11
bc_num_ulong 85 95 +10
bc_vm_run 1978 1984 +6
bc_num_s 246 252 +6
bc_err_msgs 192 188 -4
quit 38 32 -6
bc_vm_process 139 132 -7
bc_program_reset 172 159 -13
bc_parse_create 192 175 -17
bc_read_line 349 311 -38
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/6 up/down: 69/-85) Total: -16 bytes
text data bss dec hex filename
987844 485 7296 995625 f3129 busybox_old
987828 485 7296 995609 f3119 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 3 Dec 2018 13:02:35 +0000 (14:02 +0100)]
bc: handle "limits" and "quit" immediately at parse time
No need to propagate a special exit code.
function old new delta
bc_parse_stmt 2197 2301 +104
quit - 38 +38
bc_read_line 344 349 +5
bc_program_reset 174 172 -2
bc_num_s 252 246 -6
bc_num_a 454 445 -9
bc_parse_parse 471 461 -10
bc_num_ulong 95 85 -10
bc_program_exec 4500 4478 -22
bc_vm_run 2006 1978 -28
bc_vm_process 291 139 -152
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/8 up/down: 147/-239) Total: -92 bytes
text data bss dec hex filename
987936 485 7296 995717 f3185 busybox_old
987844 485 7296 995625 f3129 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 23:51:25 +0000 (00:51 +0100)]
bc": drop unused error codes and strings
function old new delta
bc_err_msgs 216 192 -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-24) Total: -24 bytes
text data bss dec hex filename
988122 485 7296 995903 f323f busybox_old
987936 485 7296 995717 f3185 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 23:26:12 +0000 (00:26 +0100)]
bc: remove "error ids": serve no useful purpose, error message should be explanatory enough
function old new delta
bc_warn_fmt 17 14 -3
bc_err_fmt 15 12 -3
bc_vm_posixError 205 189 -16
bc_vm_error 156 138 -18
bc_errs 28 - -28
bc_err_ids 58 - -58
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/4 up/down: 0/-126) Total: -126 bytes
text data bss dec hex filename
988288 485 7296 996069 f32e5 busybox_old
988122 485 7296 995903 f323f busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 23:08:59 +0000 (00:08 +0100)]
bc: reduce forward declarations
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 20:02:54 +0000 (21:02 +0100)]
bc: use smaller datatypes for limits, match GNU bc 'limits' output
function old new delta
bc_vm_process 315 291 -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-24) Total: -24 bytes
text data bss dec hex filename
988303 485 7296 996084 f32f4 busybox_old
988273 485 7296 996054 f32d6 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 19:57:17 +0000 (20:57 +0100)]
bc: better handle optional args of bc_program_pushVar()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 19:34:03 +0000 (20:34 +0100)]
bc: tweak help text
-v is supported but not shown
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 19:16:52 +0000 (20:16 +0100)]
bc: simplify bc_vm_stdin()
function old new delta
bc_vm_run 2020 2006 -14
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 18:43:34 +0000 (19:43 +0100)]
bc: only check for ^C in bc_program_exec() main loop
Checking it in individual operations such as SQRT is not necessary
since they usually do not take very long to complete. We repeatedly return
to main loop.
TODO: re-add more fine-grained ^C checks - but only with examples where it is
actually needed. E.g. I suspect simplest ops like addition or compare won't need it.
function old new delta
bc_program_index 66 64 -2
bc_num_s 258 246 -12
bc_num_cmp 294 275 -19
bc_num_compare 84 59 -25
bc_num_subArrays 74 47 -27
bc_num_a 474 445 -29
bc_program_exec 4530 4500 -30
bc_num_p 518 472 -46
bc_num_d 604 558 -46
bc_num_k 1005 957 -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/10 up/down: 0/-284) Total: -284 bytes
text data bss dec hex filename
988601 485 7296 996382 f341e busybox_old
988317 485 7296 996098 f3302 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 18:27:48 +0000 (19:27 +0100)]
bc: simpler calling convention for bc_read_file(), bc_program_search()
function old new delta
bc_vm_run 1854 2020 +166
bc_program_assign 482 476 -6
bc_program_pushVar 225 215 -10
bc_program_call 366 356 -10
bc_program_num 1126 1115 -11
bc_program_copyToVar 354 343 -11
bc_program_search 164 152 -12
bc_program_execStr 573 559 -14
bc_program_exec 4544 4530 -14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/8 up/down: 166/-88) Total: 78 bytes
text data bss dec hex filename
988523 485 7296 996304 f33d0 busybox_old
988601 485 7296 996382 f341e busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 17:44:40 +0000 (18:44 +0100)]
bc: bc_num_ulong2num(), bc_program_pushGlobal(), bc_program_stackLen() never fail
function old new delta
bc_num_ulong2num 66 62 -4
bc_num_printNum 572 563 -9
bc_program_exec 4562 4544 -18
bc_program_num 1147 1126 -21
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-52) Total: -52 bytes
text data bss dec hex filename
988575 485 7296 996356 f3404 busybox_old
988523 485 7296 996304 f33d0 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 17:26:38 +0000 (18:26 +0100)]
bc: stop passing around pointers to G.prog, they are all constant
function old new delta
bc_program_exec 4523 4562 +39
bc_program_assign 450 482 +32
bc_program_assignStr 131 159 +28
bc_program_print 762 775 +13
bc_program_num 1134 1147 +13
bc_program_search 154 164 +10
bc_num_ulong 85 95 +10
dc_parse_expr 719 727 +8
bc_program_retire 34 40 +6
bc_program_reset 168 174 +6
bc_program_binOpRetire 50 56 +6
bc_program_addFunc 220 226 +6
bc_program_prep 88 89 +1
dc_parse_init 18 17 -1
bc_program_copyToVar 355 354 -1
bc_parse_text 142 141 -1
bc_parse_number 88 87 -1
bc_parse_init 18 17 -1
bc_parse_endBody 423 422 -1
common_parse_init 29 26 -3
bc_parse_string 103 100 -3
bc_parse_addFunc 44 41 -3
bc_program_call 371 366 -5
bc_program_binOpPrep 301 296 -5
bc_program_read 342 336 -6
bc_parse_create 198 192 -6
bc_program_pushArray 143 136 -7
bc_parse_reset 194 187 -7
bc_vm_process 323 315 -8
bc_program_pushVar 236 225 -11
bc_vm_run 1872 1854 -18
bc_parse_name 590 570 -20
bc_program_execStr 594 573 -21
bc_program_modexp 793 763 -30
bc_program_printStream 172 - -172
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 13/21 up/down: 178/-331) Total: -153 bytes
text data bss dec hex filename
988728 485 7296 996509 f349d busybox_old
988575 485 7296 996356 f3404 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 16:36:00 +0000 (17:36 +0100)]
bc: select parse_init() and parse_expr() using IS_BC, not function pointers
function old new delta
common_parse_expr - 62 +62
common_parse_init - 29 +29
dc_parse_parse 53 52 -1
dc_parse_expr 723 719 -4
bc_program_execStr 606 594 -12
dc_parse_init 33 18 -15
bc_parse_init 33 18 -15
bc_parse_expression 39 - -39
bc_vm_run 1923 1872 -51
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/6 up/down: 91/-137) Total: -46 bytes
text data bss dec hex filename
988774 485 7296 996555 f34cb busybox_old
988728 485 7296 996509 f349d busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 16:18:52 +0000 (17:18 +0100)]
bc: propagate fixed arguments into callees
Looks like there is only one "BcProgram" object, &G.prog.
function old new delta
bc_program_exec 4401 4523 +122
bc_program_execStr 579 606 +27
bc_program_read 323 342 +19
bc_args 83 97 +14
bc_vm_process 327 323 -4
bc_num_ulong 95 85 -10
dc_main 62 48 -14
bc_main 62 48 -14
bc_vm_run 2317 1923 -394
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/5 up/down: 182/-436) Total: -254 bytes
text data bss dec hex filename
989028 485 7296 996809 f35c9 busybox_old
988774 485 7296 996555 f34cb busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 15:32:36 +0000 (16:32 +0100)]
bc: simplify ^C handling
It's still buggy: if SIGINT would interrupt e.g. output write(),
the result would not be as intended:
>>> while ( 1 ) print 1
...
11111111111111111111111111111111111111111111111111111111111111111111\
11111111111111111111111111111111111111111111111111111111111111111111\
^Cready for more input
interrupt (type "quit" to exit)
>>> bc: output error
function old new delta
dc_parse_parse 58 53 -5
bc_parse_parse 476 471 -5
bc_num_d 609 604 -5
bc_num_cmp 299 294 -5
bc_num_compare 90 84 -6
bc_parse_expr 2222 2215 -7
bc_num_subArrays 82 74 -8
dc_main 72 62 -10
bc_main 72 62 -10
bc_program_exec 4413 4401 -12
bc_num_a 491 474 -17
bc_read_line 364 344 -20
bc_num_p 540 518 -22
bc_program_reset 192 168 -24
bc_num_k 1031 1005 -26
bc_vm_run 2382 2317 -65
bc_vm_sig 97 - -97
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/16 up/down: 0/-344) Total: -344 bytes
text data bss dec hex filename
989372 485 7296 997153 f3721 busybox_old
989028 485 7296 996809 f35c9 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 14:48:37 +0000 (15:48 +0100)]
bc: convert to "G trick" - this returns bc to zero bss increase
function old new delta
bc_num_p 518 540 +22
bc_num_k 1010 1031 +21
bc_vm_process 312 327 +15
bc_program_exec 4401 4413 +12
bc_vm_posixError 194 205 +11
bc_num_a 480 491 +11
bc_program_reset 182 192 +10
bc_vm_sig 88 97 +9
bc_vm_error 148 156 +8
bc_parse_expr 2215 2222 +7
bc_num_compare 84 90 +6
dc_parse_parse 53 58 +5
dc_lex_token 670 675 +5
bc_read_line 359 364 +5
bc_parse_parse 471 476 +5
bc_num_cmp 294 299 +5
bc_num_subArrays 84 82 -2
bc_num_d 614 609 -5
dc_main 80 72 -8
bc_main 80 72 -8
bcg 40 - -40
bc_vm_run 2569 2382 -187
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 16/5 up/down: 157/-250) Total: -93 bytes
text data bss dec hex filename
989425 485 7336 997246 f377e busybox_old
989372 485 7296 997153 f3721 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 13:35:32 +0000 (14:35 +0100)]
bc: simplify, and restore ^C, fix ^D handling
^D used to enter infinite loop
function old new delta
bc_read_line 342 359 +17
bc_args_opt 8 - -8
dc_sig_msg 31 - -31
bc_sig_msg 34 - -34
bc_vm_run 2608 2569 -39
bc_args 123 83 -40
bc_args_lopt 81 - -81
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 1/2 up/down: 17/-233) Total: -216 bytes
text data bss dec hex filename
989491 485 7336 997312 f37c0 busybox_old
989425 485 7336 997246 f377e busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Fri, 30 Nov 2018 22:13:42 +0000 (23:13 +0100)]
bc: simplify, stop testing for IO errors on every output
function old new delta
bc_read_line 297 342 +45
bc_vm_run 2601 2608 +7
bc_program_reset 178 182 +4
bc_args 125 123 -2
dc_name 3 - -3
bc_name 3 - -3
bc_program_printStream 176 172 -4
bcg 48 40 -8
dc_main 97 80 -17
bc_main 97 80 -17
bc_vm_fflush 21 - -21
bc_vm_puts 23 - -23
bc_vm_printf 36 - -36
bc_vm_putchar 46 - -46
bc_vm_exit 46 - -46
bc_vm_process 361 312 -49
bc_vm_info 76 19 -57
bc_copyright 155 - -155
------------------------------------------------------------------------------
(add/remove: 0/8 grow/shrink: 3/7 up/down: 56/-487) Total: -431 bytes
text data bss dec hex filename
989722 485 7344 997551 f38af busybox_old
989491 485 7336 997312 f37c0 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 2 Dec 2018 17:49:16 +0000 (18:49 +0100)]
bc: fix warnings, initial cleanups
function old new delta
bc_program_exec - 4401 +4401
bc_vm_run - 2601 +2601
bc_parse_expr - 2215 +2215
bc_parse_stmt - 2197 +2197
bc_lib - 1878 +1878
bc_lex_token - 1333 +1333
bc_program_num - 1134 +1134
bc_num_k - 1010 +1010
bc_program_modexp - 793 +793
bc_program_print - 762 +762
dc_parse_expr - 723 +723
dc_lex_token - 670 +670
bc_num_d - 614 +614
bc_parse_name - 590 +590
bc_program_execStr - 579 +579
bc_num_printNum - 572 +572
bc_num_p - 518 +518
bc_num_a - 480 +480
bc_parse_parse - 471 +471
bc_program_assign - 450 +450
bc_parse_endBody - 423 +423
bc_program_call - 371 +371
dc_lex_tokens - 364 +364
bc_vm_process - 361 +361
bc_program_copyToVar - 355 +355
dc_parse_insts - 332 +332
bc_program_read - 323 +323
bc_program_binOpPrep - 301 +301
bc_lex_number - 301 +301
bc_read_line - 297 +297
bc_num_cmp - 294 +294
bc_num_m - 287 +287
bc_parse_auto - 275 +275
bc_num_s - 258 +258
bc_program_pushVar - 236 +236
bc_num_r - 231 +231
bc_program_addFunc - 220 +220
bc_lex_kws - 220 +220
bc_err_msgs - 216 +216
bc_parse_create - 198 +198
bc_vm_posixError - 194 +194
bc_parse_reset - 194 +194
bc_parse_operator - 181 +181
bc_program_reset - 178 +178
bc_program_printStream - 176 +176
bc_num_divmod - 168 +168
bc_copyright - 155 +155
bc_program_search - 154 +154
bc_num_binary - 150 +150
bc_vm_error - 148 +148
bc_program_pushArray - 143 +143
bc_parse_text - 142 +142
bc_num_printDigits - 142 +142
bc_map_insert - 142 +142
bc_parse_else - 139 +139
bc_program_assignStr - 131 +131
bc_args - 125 +125
dc_parse_mem - 116 +116
bc_parse_body - 116 +116
bc_num_split - 113 +113
bc_num_sub - 112 +112
bc_num_add - 112 +112
packed_usage 32958 33066 +108
bc_num_rem - 104 +104
bc_parse_string - 103 +103
bc_main - 97 +97
bc_num_ulong - 95 +95
bc_func_insert - 89 +89
bc_vm_sig - 88 +88
bc_program_prep - 88 +88
bc_parse_number - 88 +88
bc_array_expand - 88 +88
bc_num_subArrays - 84 +84
bc_num_compare - 84 +84
bc_lex_name - 83 +83
bc_args_lopt - 81 +81
bc_parse_pushIndex - 80 +80
bc_num_mul - 80 +80
bc_num_mod - 80 +80
bc_num_div - 80 +80
bc_vm_info - 76 +76
bc_program_name - 75 +75
bc_map_find - 71 +71
bc_lex_next - 71 +71
bc_num_printHex - 70 +70
bc_vec_concat - 68 +68
bc_num_shift - 68 +68
bc_num_extend - 68 +68
bc_program_index - 66 +66
bc_num_ulong2num - 66 +66
bc_num_retireMul - 66 +66
bc_parse_noElse - 65 +65
bc_vec_string - 64 +64
bc_parse_pushName - 63 +63
bc_parse_exprs - 60 +60
bc_err_ids - 58 +58
bc_result_free - 57 +57
bc_vec_npop - 55 +55
dc_parse_parse - 53 +53
bc_vec_push - 53 +53
bc_parse_free - 53 +53
bc_num_inv - 53 +53
dc_parse_register - 52 +52
dc_lex_regs - 52 +52
bc_lex_whitespace - 52 +52
bc_num_copy - 51 +51
bc_program_binOpRetire - 50 +50
bc_parse_ops - 50 +50
bc_map_index - 50 +50
bcg - 48 +48
bc_num_init - 48 +48
bc_parse_startBody - 47 +47
bc_num_pow - 47 +47
bc_vm_putchar - 46 +46
bc_vm_exit - 46 +46
bc_num_clean - 45 +45
bc_parse_addFunc - 44 +44
bc_vec_grow - 42 +42
bc_program_len - 42 +42
bc_num_truncate - 42 +42
bc_array_init - 42 +42
bc_parse_expression - 39 +39
bc_lex_lineComment - 39 +39
bc_num_expand - 38 +38
bc_vec_init - 37 +37
bc_vm_printf - 36 +36
bc_num_printNewline - 36 +36
bc_func_free - 35 +35
bc_sig_msg - 34 +34
bc_program_retire - 34 +34
bc_lex_assign - 34 +34
dc_parse_init - 33 +33
bc_parse_init - 33 +33
dc_sig_msg - 31 +31
bc_vec_expand - 30 +30
bc_num_ten - 30 +30
bc_num_one - 28 +28
bc_errs - 28 +28
bc_vec_free - 27 +27
bc_program_ops - 24 +24
bc_vm_puts - 23 +23
bc_num_printChar - 23 +23
bc_program_ready_msg - 22 +22
bc_vm_fflush - 21 +21
dc_main 77 97 +20
bc_parse_next_rel - 20 +20
bc_parse_next_read - 20 +20
bc_parse_next_print - 20 +20
bc_parse_next_param - 20 +20
bc_parse_next_for - 20 +20
bc_parse_next_expr - 20 +20
bc_parse_next_elem - 20 +20
bc_warn_fmt - 17 +17
bc_vec_pushByte - 15 +15
bc_string_free - 15 +15
bc_num_setToZero - 15 +15
bc_num_free - 15 +15
bc_lex_file - 15 +15
bc_id_free - 15 +15
bc_err_fmt - 15 +15
bc_vec_item_rev - 14 +14
bc_id_cmp - 12 +12
bc_num_zero - 11 +11
bc_vec_item - 9 +9
bc_program_stdin_name - 8 +8
bc_program_scale - 8 +8
bc_args_opt - 8 +8
bc_func_read - 7 +7
bc_func_main - 7 +7
bc_err_line - 7 +7
bc_lib_name - 4 +4
bc_args_env_name - 4 +4
applet_main 1604 1608 +4
dc_name - 3 +3
bc_name - 3 +3
applet_names 2781 2784 +3
static.bases 5 - -5
check_under 20 - -20
pop 24 - -24
print_no_pop 32 - -32
sub 34 - -34
divide 34 - -34
mul 37 - -37
add 37 - -37
push 38 - -38
print_stack_no_pop 40 - -40
not 72 - -72
set_output_base 95 - -95
or 103 - -103
eor 103 - -103
and 103 - -103
mod 105 - -105
stack_machine 116 - -116
operators 144 - -144
print_base 230 - -230
------------------------------------------------------------------------------
(add/remove: 173/20 grow/shrink: 4/0 up/down: 38089/-1372) Total: 36717 bytes
text data bss dec hex filename
950181 485 7296 957962 e9e0a busybox_old
989722 485 7344 997551 f38af busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Gavin Howard [Sat, 3 Nov 2018 17:00:21 +0000 (11:00 -0600)]
bc: new applet, throws warning
Signed-off-by: Gavin Howard <yzena.tech@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Mon, 3 Dec 2018 09:07:58 +0000 (10:07 +0100)]
vi: correctly detect when a deletion empties the buffer
Michał Berger has reported two issues:
- Repeatedly deleting and undoing the deletion of the last line
results in characters being lost from the end of the line.
- Deleting the bottom line twice then attempting to undo each of
these deletions results in a segfault.
The problem seems to be an incorrect test for whether the text buffer
is empty.
Reported-by: Michał Berger <michallinuxstuff@gmail.com>
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 29 Nov 2018 13:39:52 +0000 (14:39 +0100)]
vi: code shrink
function old new delta
char_search 241 247 +6
get_one_address 275 272 -3
colon 2878 2875 -3
do_cmd 4726 4720 -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 6/-12) Total: -6 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 29 Nov 2018 13:19:57 +0000 (14:19 +0100)]
vi: fix FEATURE_VI_REGEX_SEARCH to respect LIMITED (one-line) search
If busybox is compiled with FEATURE_VI_REGEX_SEARCH enabled, command
":s/x/y/" searches not only in the current line, but continues search
after it. This makes range searches (":1,3s/x/y/") work incorrect. For
example file "./test":
1
2
3
$ vi ./test
:1,2s/3/e/
gives us:
1
2
e
function old new delta
char_search 213 241 +28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 29 Nov 2018 12:15:57 +0000 (13:15 +0100)]
libbb: do not misinterpret 0x10-0x19 chars in "\xNNN" too
function old new delta
bb_process_escape_sequence 141 151 +10
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 29 Nov 2018 11:34:50 +0000 (12:34 +0100)]
libbb: @ in "\x3@" is not a valid hex digit
function old new delta
bb_process_escape_sequence 134 141 +7
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Thu, 29 Nov 2018 10:44:10 +0000 (11:44 +0100)]
cat,nl: fix handling of open errors
$ cat -n does_not_exist; echo $?
cat: does_not_exist: No such file or directory
1
function old new delta
print_numbered_lines 118 129 +11
nl_main 196 201 +5
cat_main 421 425 +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 20/0) Total: 20 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Wed, 28 Nov 2018 11:16:29 +0000 (12:16 +0100)]
awk: abort if NF set to negative value
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Chen Qi [Wed, 21 Nov 2018 02:19:28 +0000 (10:19 +0800)]
testsuite: check CONFIG_DESKTOP before using 'od -t'
The '-t' option for od is enabled by CONFIG_DESKTOP. So
check this config before using 'od -t' in test cases.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Tue, 27 Nov 2018 14:34:25 +0000 (14:34 +0000)]
hush: allow hush to run embedded scripts
Embedded scripts require a shell to be present in the BusyBox
binary. Allow either ash or hush to be used for this purpose.
If both are enabled ash takes precedence.
The size of the binary is unchanged in the default configuration:
both ash and hush are present but support for embedded scripts
isn't compiled into hush.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 27 Nov 2018 14:43:10 +0000 (15:43 +0100)]
free: ensure there is a least one space between numbers
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Tue, 27 Nov 2018 10:45:30 +0000 (10:45 +0000)]
docs: add embedded-scripts.txt
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 27 Nov 2018 11:09:01 +0000 (12:09 +0100)]
tar: skip 'V' headers (GNU volume label), closes 11526
function old new delta
get_header_tar 1696 1690 -6
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 27 Nov 2018 10:52:14 +0000 (11:52 +0100)]
unlzma: fix too-eager corruption check
function old new delta
unpack_lzma_stream 2686 2674 -12
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 27 Nov 2018 10:26:48 +0000 (11:26 +0100)]
tar: fix too eager autodetection, closes 11531
function old new delta
is_suffixed_with - 54 +54
tar_main 1006 1026 +20
open_transformer 92 79 -13
config_file_action 478 458 -20
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/2 up/down: 74/-33) Total: 41 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Sun, 25 Nov 2018 11:46:39 +0000 (11:46 +0000)]
build system: prevent duplicate applet names
The embedded script feature makes it easier to create applets with
duplicate names. Currently in such cases the build succeeds but
the resulting executable doesn't work as the developer intended.
Catch duplicate names when the applet tables are being generated
and make the build fail.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Ron Yorston [Wed, 21 Nov 2018 10:11:01 +0000 (10:11 +0000)]
Tweaks to build process for embedded scripts
- Force a rebuild if a script in applets_sh is changed.
- Move the dummy usage messages for custom applets to usage.h and
change the name from 'dummy' to 'scripted'.
- Hide an error from gen_build_files.sh if an embed directory exists
but is empty.
- Tidy up embedded_scripts script.
v2: Remove a couple of unnecessary tests in embedded_scripts, as
pointed out by Xabier Oneca.
Drop the stripping of comments.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Tue, 27 Nov 2018 09:35:10 +0000 (10:35 +0100)]
tls: add ECDHE_PSK and remove ARIA cipher ids
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 16:33:17 +0000 (17:33 +0100)]
tls: add _anon_ cipher definitions
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 15:39:19 +0000 (16:39 +0100)]
tls: enable TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 cipher
function old new delta
static.ciphers 30 32 +2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 15:30:22 +0000 (16:30 +0100)]
tls: cipher 009D is not yet supported, don't test for it
function old new delta
tls_handshake 2116 2108 -8
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 14:55:41 +0000 (15:55 +0100)]
tls: speed up prf_hmac_sha256()
function old new delta
hmac_sha_precomputed - 58 +58
prf_hmac_sha256 181 222 +41
hmac_sha256 68 - -68
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/0 up/down: 99/-68) Total: 31 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 12:00:28 +0000 (13:00 +0100)]
libbb: add comment on sha384
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Mon, 26 Nov 2018 09:33:23 +0000 (10:33 +0100)]
tls: simplify hmac_begin()
function old new delta
hmac_begin 196 158 -38
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Denys Vlasenko [Sun, 25 Nov 2018 23:17:10 +0000 (00:17 +0100)]
tls: add support for 8 more cipher ids - all tested to work
function old new delta
tls_handshake 2059 2116 +57
static.ciphers - 30 +30
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 87/0) Total: 87 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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
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(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
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(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
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(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
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(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
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(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>
projects / oweals / busybox.git / log