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netstat: print control chars as ^C etc
vi: style fixlet
function old new delta
fputc_printable - 100 +100
unix_do_one 451 487 +36
printLines 258 190 -68
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(add/remove: 1/0 grow/shrink: 1/1 up/down: 136/-68) Total: 68 bytes
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people may want to disable display of high-bit chars)
ip: build fixlet
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screen wigth. Introduce MAX_TABSTOP and MAX_INPUT_LEN. Fix redraw
of very long lines and cursor movement past NULs.
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(found by Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>)
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inetd,syslogd: use safe_read instead of open-coded EINTR handling
syslogd: bail out if you see null read from Unix socket
(should never happen, but if it does, spinning forever
and eating 100% CPU is not a good idea)
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EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
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function old new delta
safe_poll - 77 +77
svlogd_main 1470 1466 -4
zcip_main 1530 1524 -6
forkexec 1345 1338 -7
decode_format_string 795 788 -7
collect_blk 474 467 -7
buffer_pread 540 532 -8
tftp 1182 1172 -10
microcom_main 763 749 -14
arpping 441 424 -17
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(add/remove: 1/0 grow/shrink: 0/9 up/down: 77/-80) Total: -3 bytes
text data bss dec hex filename
770162 1034 10404 781600 bed20 busybox_old
770158 1034 10404 781596 bed1c busybox_unstripped
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$ ./.cmk bloatcheck
function old new delta
readit 406 364 -42
syslogd_main 1249 1206 -43
traceroute_main 4115 4060 -55
mysleep 112 45 -67
arpping 579 441 -138
tftp 1575 1182 -393
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(add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-738) Total: -738 bytes
text data bss dec hex filename
770580 1051 10764 782395 bf03b busybox_old
769820 1051 10764 781635 bed43 busybox_unstripped
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trylink: explain how to modify link and drastically decrease amount
of padding (unfortunately, needs hand editing ATM).
*: add ALIGN1 / ALIGN2 to global strings and arrays of bytes and shorts
size saving: 0.5k
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* the puzzling message on error is replaced with strerror(errno)
so it should be even more detailed and smaller at the same time.
* merged code in edit_file() and code for ':edit <file>' in colon() into
new func init_text_buffer(). Was horribly duplicate. Moved most of
error/sanity checking to file_insert(). Result is that you get a proper
validation (prevent reading /dev/*) and error messages for ':r <file>'
* renamed 'cfn' to 'current_filename' for improved readability
* merged smallint vi_readonly and readonly into bitfields into
readonly_mode to save space.
* added text_size variable to keep track how big the text buffer is.
This is used to fix a buffer overflow. To reproduce bug:
./busybox vi TODO
:r Makefile
vi segfaults due to no buffer checking is done at all. som redesign is
needed here but i added a check in text_hole_make() to aviod the
segfault at least.
* removed isblnk() and use isblank(3) instead.
* fixed compiler warning by displaying the return code for :!<command>
This makes things bigger than needed but since the patch reduces the
overall size... (see below)
* new func next_tabstop(int) merges some duplicate code. There are more
cuplicode here but i couldnt find a good way to merge them.
* Fix *ANNOYING* placement of cursor on '\t' characters. To reproduce:
echo -e "\thello" > file1
./busybox vi file1
Try to insert some text at the beginning of line. Text will be inserted
but cursor is blinking somewhere else. The patch should make busybox vi
behave more like original vi(m). Costs a few bytes but its worth it
imho.
* new_text() is moved into init_text_buffer()
* the previously added update_ro_status() was moved info file_insert due
to duplication removal mentioned above.
function old new delta
init_text_buffer - 245 +245
file_insert 312 420 +108
next_tabstop - 82 +82
text_hole_make 154 171 +17
do_cmd 5093 5100 +7
static.cmd_mode_indicator - 5 +5
refresh 1248 1253 +5
current_filename - 4 +4
yank_delete 161 164 +3
what_reg 96 99 +3
end_cmd_q 78 81 +3
char_insert 440 442 +2
readonly_mode - 1 +1
vi_readonly 1 - -1
setops 154 153 -1
readonly 1 - -1
vi_setops 4 1 -3
string_insert 161 158 -3
cfn 4 - -4
show_status_line 532 514 -18
readit 519 500 -19
move_to_col 161 138 -23
vi_main 495 433 -62
isblnk 75 - -75
.rodata 4751 4655 -96
edit_file 892 787 -105
new_text 125 - -125
update_ro_status 131 - -131
colon 3848 3667 -181
------------------------------------------------------------------------------
(add/remove: 5/6 grow/shrink: 8/10 up/down: 485/-848) Total: -363
bytes
text data bss dec hex filename
34751 873 4260 39884 9bcc busybox_old
34439 877 4260 39576 9a98 busybox_unstripped
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require rood to use w! when saving non-writable files.
Patch by Natanael Copa <natanael.copa@gmail.com>
update_ro_status - 73 +73
edit_file 819 822 +3
colon 3440 3425 -15
.rodata 128090 128058 -32
file_insert 288 235 -53
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(add/remove: 1/0 grow/shrink: 1/3 up/down: 76/-100) Total: -24 bytes
text data bss dec hex filename
673344 2740 13968 690052 a8784 busybox_old
673320 2740 13968 690028 a876c busybox_unstripped
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<wharms@bfs.de>)
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(8k of shell line edit buffer is an overkill)
# make ARCH=i386 bloatcheck
function old new delta
read_line_input 3933 3967 +34
ifaddrlist 348 345 -3
do_loadfont 208 191 -17
edit_file 840 819 -21
.rodata 129112 129080 -32
uncompress 1305 1268 -37
loadfont_main 566 495 -71
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(add/remove: 0/0 grow/shrink: 1/6 up/down: 34/-181) Total: -147 bytes
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size is smaller too (subject to arch differenced I guess)
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*: s/include "busybox.h"/include "libbb.h"
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awk: some 'lineno' vars were shorts, made them ints (code got smaller)
awk: rename global t to global ttt. still an awful name, but at least
you can grep for it now.
function old new delta
ttt - 28 +28
mysleep 104 120 +16
readit 408 418 +10
lineno 2 4 +2
parse_program 338 339 +1
evaluate 6446 6445 -1
syntax_error 25 23 -2
next_token 917 915 -2
new_node 26 24 -2
tv 16 8 -8
skip_spaces 68 53 -15
t 28 - -28
rfds 128 - -128
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(add/remove: 1/2 grow/shrink: 4/6 up/down: 57/-186) Total: -129 bytes
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also optimize many strlen() calls.
if (strlen(buf) <= 0) goto vc1 - ??!!
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no preceding prototype
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last xcalloc replaced by xzalloc
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