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90 Commits

Author SHA1 Message Date
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
7ab9cd2398 libbb: make bb_lookup_port() abort on bad port names 
Also, no need to preserve errno

function                                             old     new   delta
.rodata                                           104247  104241      -6
bb_lookup_port                                        97      83     -14
nc_main                                             1039    1018     -21
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-41)             Total: -41 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-09-09 22:00:44 +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
a02a4e9830 whitespace and comment format fixes, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-10-05 15:19:25 +02:00
Denys Vlasenko
3c34f681b3 netcat: net applet (alias to nc) 
function                                             old     new   delta
packed_usage                                       31807   31856     +49
applet_names                                        2701    2708      +7
applet_main                                         1560    1564      +4
applet_install_loc                                   195     196      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/0 up/down: 61/0)               Total: 61 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-09-15 18:55:53 +02:00
Denys Vlasenko
72089cf6b4 config: deindent all help texts 
Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-21 09:50:55 +02:00
Denys Vlasenko
4eed2c6c50 Update menuconfig items with approximate applet sizes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-18 22:01:24 +02:00
Denys Vlasenko
5b3b468ec0 nc: use poll() instead of select() 
function                                             old     new   delta
nc_main                                              943     866     -77

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-02-16 17:17:17 +01:00
Denys Vlasenko
47367e1d50 Convert all networking/* applets to "new style" applet definitions 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-23 09:05:14 +01:00
Denys Vlasenko
9de2e5a222 *: hopefully all setup_common_bufsiz() are in place 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 18:38:51 +02:00
Denys Vlasenko
e6a2f4cc5a libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it 
The config item is FEATURE_USE_BSS_TAIL. When it is off (default):

function                                             old     new   delta
read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
push                                                  46      44      -2
inetd_main                                          2136    2134      -2
uevent_main                                          421     418      -3
addLines                                              97      92      -5
bb_common_bufsiz1                                   8193    1024   -7169
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181)        Total: -7119 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829901	   4086	   1904	 835891	  cc133	busybox_unstripped

FEATURE_USE_BSS_TAIL=y:

read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
inetd_main                                          2136    2134      -2
bb_common_bufsiz1                                   8193       -   -8193
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195)        Total: -8133 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829911	   4086	    880	 834877	  cbd3d	busybox_unstripped

FIXME: setup_common_bufsiz() calls are missing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 17:39:11 +02:00
Denys Vlasenko
ca54b662e7 nc: use symbolic SHUT_WR instead of literal 1 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-07-28 21:08:37 +02:00
Denys Vlasenko
c56d12505b nc: fix build failure ("subscripted value is neither array nor pointer") 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-03-17 22:59:51 +01:00
Denys Vlasenko
ed954b6855 Fix config help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-28 12:39:27 +01:00
Denys Vlasenko
a14f319805 nc: don't redirect stderr to network in -e PROG mode 
This in incompatible with nc-1.10, but makes a lot of sense.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-02-28 11:09:14 +01:00
Denys Vlasenko
6967578728 whitespace fixes. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-14 01:34:48 +01:00
Denys Vlasenko
66426760be *: remove "Options:" string from help texts 
function                                             old     new   delta
packed_usage                                       28706   28623     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-05 03:58:28 +02:00
Denys Vlasenko
0ef64bdb40 *: make GNU licensing statement forms more regular 
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-08-16 20:14:46 +02:00
Denys Vlasenko
fb4cb1c416 tweak defconfig 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-18 23:02:36 +02:00
Pascal Bellard
926031b764 *: introduce and use xfork() and xvfork() 
function                                             old     new   delta
launch_helper                                        170     169      -1
setup_heredoc                                        312     302     -10
handle_dir_common                                    367     354     -13
expand_vars_to_list                                 2456    2443     -13
open_transformer                                      89      74     -15
data_extract_to_command                              439     423     -16
do_ipaddr                                           1406    1389     -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-85)             Total: -85 bytes

Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-07-04 15:32:38 +02:00
Denys Vlasenko
77cc2c5738 nc: introduce CONFIG_NC_110_COMPAT option. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-06-27 04:22:02 +02:00
Tomoya Adachi
63416cc57d nc: fix nc -ll; report vfork errors; make select loop faster 
function                                             old     new   delta
nc_main                                              933     946     +13

Signed-off-by: Tomoya Adachi <adachi@il.is.s.u-tokyo.ac.jp>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-08-03 02:59:22 +02:00
Denys Vlasenko
28a105d867 nc, hush: cosmetic cleanups, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2009-06-01 11:26:30 +02:00
Denis Vlasenko
f6b4685691 add FEATURE_UNIX_LOCAL. By Ingo van Lil (inguin AT gmx.de) 2009-04-25 13:16:53 +00:00
Denis Vlasenko
8ed1945a91 nc: free lsa in server mode, we might be up for a long time 2009-04-21 23:51:43 +00:00
Denis Vlasenko
5e34ff29bc *: mass renaming of USE_XXXX to IF_XXXX 
and SKIP_XXXX to IF_NOT_XXXX - the second one was especially
badly named. It was not skipping anything!
 2009-04-21 11:09:40 +00:00
Denis Vlasenko
3fa36e2350 *: a bit of code shrink 
function                                             old     new   delta
stop_handler                                          41      38      -3
sulogin_main                                         508     504      -4
got_cont                                               4       -      -4
cont_handler                                          11       -     -11
startservice                                         309     297     -12
processorstart                                       423     409     -14
tcpudpsvd_main                                      1861    1843     -18
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/5 up/down: 0/-66)             Total: -66 bytes
 2008-11-09 00:15:11 +00:00
Denis Vlasenko
a60f84ebf0 *: rename ATTRIBUTE_XXX to just XXX. 2008-07-05 09:18:54 +00:00
Denis Vlasenko
fa0b56db76 sendmail: fix wrong vfork usage here too 
*: shorten error texts

function                                             old     new   delta
launch_helper                                          -     151    +151
vfork_or_die                                          20       -     -20
sendgetmail_main                                    1946    1848     -98
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/1 up/down: 151/-118)           Total: 33 bytes
 2008-07-01 16:09:07 +00:00
Bernhard Reutner-Fischer
636a1f85e8 - use EXIT_{SUCCESS,FAILURE}. No object-code changes 2008-05-19 09:29:47 +00:00
Denis Vlasenko
85c247161b *: fix fallout from -Wunused-parameter 
function                                             old     new   delta
bbunpack                                             358     366      +8
passwd_main                                         1070    1072      +2
handle_incoming_and_exit                            2651    2653      +2
getpty                                                88      86      -2
script_main                                          975     972      -3
inetd_main                                          2036    2033      -3
dname_enc                                            377     373      -4
make_new_session                                     474     462     -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/5 up/down: 12/-24)            Total: -12 bytes
   text    data     bss     dec     hex filename
 797429     658    7428  805515   c4a8b busybox_old
 797417     658    7428  805503   c4a7f busybox_unstripped
 2008-03-17 09:04:04 +00:00
Denis Vlasenko
c9ca0a3274 mount: recognize "dirsync" (closes bug 835) 
mount: sanitize environ if called by non-root
*: adjust for slightly different sanitize routine
 2008-02-18 11:08:33 +00:00
Bernhard Reutner-Fischer
8c69afd992 - be C99 friendly. Anonymous unions are a GNU extension. This change is 
size-neutral WRT -std=gnu99 and fixes several compilation errors for strict
  C99 mode.
 2008-01-29 10:33:34 +00:00
Denis Vlasenko
9b49a5ed85 add -fvisibility=hidden to CC flags, mark XXX_main functions 
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
 2007-10-11 10:05:36 +00:00
Denis Vlasenko
96e1b38586 introduce and use close_on_exec_on(fd). -50 bytes. 2007-09-30 23:50:48 +00:00
Denis Vlasenko
74324c8666 Audit bb_common_bufsiz usage, add script which looks for misuse. 
tr: stop using globals needlessly.
code: -103 bytes
 2007-06-04 10:16:52 +00:00
Denis Vlasenko
b6adbf1be2 usage.c: remove reference to busybox.h 
*: s/include "busybox.h"/include "libbb.h"
 2007-05-26 19:00:18 +00:00
Denis Vlasenko
29fe7265b8 nc: port nc 1.10 to busybox 2007-04-05 20:26:28 +00:00
Denis Vlasenko
2856dab477 tcpsvd: new applet 
It's a GPL-ed 'clone' of Dan Bernstein's tcpserver.
Author: Gerrit Pape <pape@smarden.org>
http://smarden.sunsite.dk/ipsvd/
size tcpsvd.o
   text    data     bss     dec     hex filename
   2571       4      16    2591     a1f tcpsvd.o
 2007-04-01 01:18:20 +00:00
Denis Vlasenko
1d76f439da EXEC_PREFER_APPLETS support by Gabriel L. Somlo <somlo@cmu.edu> 2007-02-06 01:20:12 +00:00
Denis Vlasenko
06af216528 suppress warnings about easch <applet>_main() having 
no preceding prototype
 2007-02-03 17:28:39 +00:00
Denis Vlasenko
703e20235a cleanups: unnecessary casts, unified const_1, eliminate cross-.c file 
prototypes (heresy!), add spaces in places like "flags&NETSTAT_CONNECTED",
removed unused #defines, #ifdef -> #if, use uint32_t for ipv4 addrs.
 2007-01-22 14:12:08 +00:00
Denis Vlasenko
316355524f fixing bugs revealed by randomconfig runs 2007-01-20 16:54:19 +00:00
Denis Vlasenko
5d68724d5b next part of ipv6-ization. mostly netcat. 2007-01-12 20:59:31 +00:00
Denis Vlasenko
6536a9b583 next part of ipv6-ization is here: wget & httpd 2007-01-12 10:35:23 +00:00
Denis Vlasenko
1dc1b37b33 use xbind, xconnect where appropriate. 
small edits to arping
 2006-12-23 02:48:44 +00:00
Denis Vlasenko
c8e6e35ba4 nc: add missing cast 
xfuncs: add dprintf for dietlibc
 2006-12-18 22:10:24 +00:00
Denis Vlasenko
48237b0c88 introduce setsockopt_reuseaddr(int fd), setsockopt_broadcast(int fd), 
use them where appropriate. 200 bytes saved
 2006-11-22 23:22:06 +00:00
Denis Vlasenko
8528151658 small ipv6 doc changes; nslookup a tiny bit smaller 2006-11-07 19:05:43 +00:00
Denis Vlasenko
d0e70af9d1 nc: fix 2 my own buglets, and few someone else's too. 2006-10-16 01:10:28 +00:00