Commit Graph

52 Commits

Author SHA1 Message Date
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
b097a84d62 config: update size information
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-28 03:20:17 +01:00
Denys Vlasenko
2af5e3fac3 libbb: compile capability code only if FEATURE_SETPRIV_CAPABILITIES or RUN_INIT
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-02-21 20:13:39 +01:00
Denys Vlasenko
2ab9403119 whitespace and comment format fixes, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05 15:33:28 +02:00
Denys Vlasenko
7d834c9bb4 run-init: if doing dry run, do not require pid==1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-22 11:40:27 +02:00
Denys Vlasenko
bbc26c6934 run-init: implement -n "dry run"
function                                             old     new   delta
switch_root_main                                     637     706     +69
packed_usage                                       31743   31757     +14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 83/0)               Total: 83 bytes
   text	   data	    bss	    dec	    hex	filename
 915247	    563	   5844	 921654	  e1036	busybox_old
 915303	    563	   5844	 921710	  e106e	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-22 10:37:30 +02:00
Denys Vlasenko
200bcc851a run-init: new applet
function                                             old     new   delta
switch_root_main                                     354     637    +283
drop_usermodehelper                                    -     157    +157
cap_name_to_number                                     -      77     +77
packed_usage                                       31707   31743     +36
applet_names                                        2665    2674      +9
applet_main                                         1544    1548      +4
applet_install_loc                                   193     194      +1
setpriv_main                                         933     928      -5
getcaps                                              131     122      -9
parse_cap                                            117      29     -88
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 5/3 up/down: 567/-102)          Total: 465 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-21 19:30:01 +02:00
Denys Vlasenko
22542eca18 getopt32: remove opt_complementary
function                                             old     new   delta
vgetopt32                                           1318    1392     +74
runsvdir_main                                        703     713     +10
bb_make_directory                                    423     425      +2
collect_cpu                                          546     545      -1
opt_chars                                              3       -      -3
opt_complementary                                      4       -      -4
tftpd_main                                           567     562      -5
ntp_init                                             476     471      -5
zcip_main                                           1266    1256     -10
xxd_main                                             428     418     -10
whois_main                                           140     130     -10
who_main                                             463     453     -10
which_main                                           212     202     -10
wget_main                                           2535    2525     -10
watchdog_main                                        291     281     -10
watch_main                                           222     212     -10
vlock_main                                           399     389     -10
uuencode_main                                        332     322     -10
uudecode_main                                        316     306     -10
unlink_main                                           45      35     -10
udhcpd_main                                         1482    1472     -10
udhcpc_main                                         2762    2752     -10
tune2fs_main                                         290     280     -10
tunctl_main                                          366     356     -10
truncate_main                                        218     208     -10
tr_main                                              518     508     -10
time_main                                           1134    1124     -10
tftp_main                                            286     276     -10
telnetd_main                                        1873    1863     -10
tcpudpsvd_main                                      1785    1775     -10
taskset_main                                         521     511     -10
tar_main                                            1009     999     -10
tail_main                                           1644    1634     -10
syslogd_main                                        1967    1957     -10
switch_root_main                                     368     358     -10
svlogd_main                                         1454    1444     -10
sv                                                  1296    1286     -10
stat_main                                            104      94     -10
start_stop_daemon_main                              1028    1018     -10
split_main                                           542     532     -10
sort_main                                            796     786     -10
slattach_main                                        624     614     -10
shuf_main                                            504     494     -10
setsid_main                                           96      86     -10
setserial_main                                      1132    1122     -10
setfont_main                                         388     378     -10
setconsole_main                                       78      68     -10
sendmail_main                                       1209    1199     -10
sed_main                                             677     667     -10
script_main                                         1077    1067     -10
run_parts_main                                       325     315     -10
rtcwake_main                                         454     444     -10
rm_main                                              175     165     -10
reformime_main                                       119     109     -10
readlink_main                                        123     113     -10
rdate_main                                           246     236     -10
pwdx_main                                            189     179     -10
pstree_main                                          317     307     -10
pscan_main                                           663     653     -10
popmaildir_main                                      818     808     -10
pmap_main                                             80      70     -10
nc_main                                             1042    1032     -10
mv_main                                              558     548     -10
mountpoint_main                                      477     467     -10
mount_main                                          1264    1254     -10
modprobe_main                                        768     758     -10
modinfo_main                                         333     323     -10
mktemp_main                                          200     190     -10
mkswap_main                                          324     314     -10
mkfs_vfat_main                                      1489    1479     -10
microcom_main                                        715     705     -10
md5_sha1_sum_main                                    521     511     -10
man_main                                             867     857     -10
makedevs_main                                       1052    1042     -10
ls_main                                              563     553     -10
losetup_main                                         432     422     -10
loadfont_main                                         89      79     -10
ln_main                                              524     514     -10
link_main                                             75      65     -10
ipcalc_main                                          544     534     -10
iostat_main                                         2397    2387     -10
install_main                                         768     758     -10
id_main                                              480     470     -10
i2cset_main                                         1239    1229     -10
i2cget_main                                          380     370     -10
i2cdump_main                                        1482    1472     -10
i2cdetect_main                                       682     672     -10
hwclock_main                                         406     396     -10
httpd_main                                           741     731     -10
grep_main                                            837     827     -10
getty_main                                          1559    1549     -10
fuser_main                                           297     287     -10
ftpgetput_main                                       345     335     -10
ftpd_main                                           2232    2222     -10
fstrim_main                                          251     241     -10
fsfreeze_main                                         77      67     -10
fsck_minix_main                                     2921    2911     -10
flock_main                                           314     304     -10
flashcp_main                                         740     730     -10
flash_eraseall_main                                  833     823     -10
fdformat_main                                        532     522     -10
expand_main                                          680     670     -10
eject_main                                           335     325     -10
dumpleases_main                                      630     620     -10
du_main                                              314     304     -10
dos2unix_main                                        441     431     -10
diff_main                                           1350    1340     -10
df_main                                             1064    1054     -10
date_main                                           1095    1085     -10
cut_main                                             961     951     -10
cryptpw_main                                         228     218     -10
crontab_main                                         575     565     -10
crond_main                                          1149    1139     -10
cp_main                                              370     360     -10
common_traceroute_main                              3834    3824     -10
common_ping_main                                    1767    1757     -10
comm_main                                            239     229     -10
cmp_main                                             655     645     -10
chrt_main                                            379     369     -10
chpst_main                                           704     694     -10
chpasswd_main                                        308     298     -10
chown_main                                           171     161     -10
chmod_main                                           158     148     -10
cat_main                                             428     418     -10
bzip2_main                                           120     110     -10
blkdiscard_main                                      264     254     -10
base64_main                                          221     211     -10
arping_main                                         1665    1655     -10
ar_main                                              556     546     -10
adjtimex_main                                        406     396     -10
adduser_main                                         882     872     -10
addgroup_main                                        411     401     -10
acpid_main                                          1198    1188     -10
optstring                                             11       -     -11
opt_string                                            18       -     -18
OPT_STR                                               25       -     -25
ubi_tools_main                                      1288    1258     -30
ls_options                                            31       -     -31
------------------------------------------------------------------------------
(add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383)      Total: -1297 bytes
   text	   data	    bss	    dec	    hex	filename
 915428	    485	   6876	 922789	  e14a5	busybox_old
 914629	    485	   6872	 921986	  e1182	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-08 21:55:02 +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
10ad622dc2 Spelling fixes in comments, documentation, tests and examples
By klemens <ka7@github.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-04-17 16:13:32 +02:00
Andrei Gherzan
e3b65ab43d switch_root: don't bail out when console doesn't exist
Busybox is very often used in initramfs at the end of which usually
there is a switch_root to the actual rootfs. There are many cases where
the console kernel argument is either just a placeholder (for example
RaspberryPi uses serial0 and serial1) or configured as null to avoid any
console messages - usually you would see such of a setup in production
environments.

Currently busybox bails out if can't open the console argument. If this
happenes in initramfs and if the console=null for example, you get in a
blind kernel panic. Avoid this by only warning instead of dying.

function                                             old     new   delta
switch_root_main                                     371     368      -3

Signed-off-by: Andrei Gherzan <andrei@gherzan.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-03-24 16:39:08 +01:00
Denys Vlasenko
dd898c9f33 Convert all util-linux/* applets to "new style" applet definitions
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-23 11:46:32 +01:00
Denys Vlasenko
bf74fb4497 typo fix in comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-10-13 12:34:35 +02:00
Denys Vlasenko
0687a5b496 libbb: make xchroot do a chdir("/") after chroot
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-08 00:28:24 +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
Pere Orga
5bc8c005a8 move remaining help text from include/usage.src.h
Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-04-11 03:29:49 +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
cb37637b47 switch_root: more clear error messages
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-12-15 01:55:55 +01:00
Denys Vlasenko
da49f58524 move libc related stuff out of platform.h
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-07-08 02:58:38 +02:00
Denys Vlasenko
a5bdbe1087 switch_root: allow /init to be a symlink; add doc (thanks Rob!)
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-06-17 14:03:24 +02:00
Denis Vlasenko
e6b10ef0a7 switch_root: move misplaced comment 2009-04-21 20:52:58 +00:00
Denis Vlasenko
f9d4fc3cf8 switch_root: improve behavior on error; improve help text
*: make "can't execute '%s'" message uniform
2009-04-21 20:40:51 +00:00
Denis Vlasenko
0ad8234474 switch_root: print errno on failure 2009-04-21 00:29:17 +00:00
Denis Vlasenko
39acf45335 switch_root: shrink
function                                             old     new   delta
switch_root_main                                     402     401      -1
rootdev                                                8       -      -8
delete_contents                                      226     179     -47
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-56)             Total: -56 bytes
2008-07-11 23:44:50 +00:00
Denis Vlasenko
a60f84ebf0 *: rename ATTRIBUTE_XXX to just XXX. 2008-07-05 09:18:54 +00:00
Denis Vlasenko
77ad97f199 more -Wall warning fixes from Cristian Ionescu-Idbohrn.
This time it resulted in small code changes:

function                                             old     new   delta
nexpr                                                820     828      +8
tail_main                                           1200    1202      +2
wrapf                                                166     167      +1
parse_mount_options                                  227     209     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 11/-18)             Total: -7 bytes
2008-05-13 02:27:31 +00:00
Denis Vlasenko
68404f13d4 *: add -Wunused-parameter; fix resulting breakage
function                                             old     new   delta
procps_scan                                         1265    1298     +33
aliascmd                                             278     283      +5
parse_file_cmd                                       116     120      +4
dname_enc                                            373     377      +4
setcmd                                                90      93      +3
execcmd                                               57      60      +3
count_lines                                           72      74      +2
process_command_subs                                 340     339      -1
test_main                                            409     407      -2
mknod_main                                           179     177      -2
handle_incoming_and_exit                            2653    2651      -2
argstr                                              1312    1310      -2
shiftcmd                                             131     128      -3
exitcmd                                               46      43      -3
dotcmd                                               297     294      -3
breakcmd                                              86      83      -3
evalpipe                                             353     349      -4
evalcommand                                         1180    1176      -4
evalcmd                                              109     105      -4
send_tree                                            374     369      -5
mkfifo_main                                           82      77      -5
evalsubshell                                         152     147      -5
typecmd                                               75      69      -6
letcmd                                                61      55      -6
add_cmd                                             1190    1183      -7
main                                                 891     883      -8
ash_main                                            1415    1407      -8
parse_stream                                        1377    1367     -10
alloc_procps_scan                                     55       -     -55
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148)          Total: -94 bytes
   text    data     bss     dec     hex filename
 797195     658    7428  805281   c49a1 busybox_old
 797101     658    7428  805187   c4943 busybox_unstripped
2008-03-17 09:00:54 +00:00
Denis Vlasenko
394eebed66 lpd: spool mode added by Vladimir
lpr: more robust error reporting
*: introduce and use xchroot
libbb: full_read/write now will report partial data counts prior to error
isdirectory.c: style fixes

lpd_main                                             249     486    +237
xchroot                                                -      29     +29
get_response_or_say_and_die                          110     139     +29
full_write                                            52      60      +8
full_read                                             55      63      +8
static.newline                                         1       -      -1
switch_root_main                                     404     400      -4
chpst_main                                          1089    1079     -10
getopt32                                            1370    1359     -11
chroot_main                                          115     101     -14
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 4/4 up/down: 311/-40)           Total: 271 bytes
   text    data     bss     dec     hex filename
 798472     728    7484  806684   c4f1c busybox_old
 798775     728    7484  806987   c504b busybox_unstripped
2008-02-25 20:30:24 +00:00
Denis Vlasenko
6dd03f04ea switch_root: stop at first non-option. Closes bug 1425. 2008-02-13 17:25:31 +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
fe7cd642b0 don't pass argc in getopt32, it's superfluous
(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes
   text    data     bss     dec     hex filename
 773469    1058   11092  785619   bfcd3 busybox_old
 772644    1058   11092  784794   bf99a busybox_unstripped
2007-08-18 15:32:12 +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
3ace9fa6d8 switch_root: error_msg -> perror_msg, reduce by 22 bytes while at it. 2007-04-18 21:40:30 +00:00
Denis Vlasenko
51742f4bb0 style fixes. No code changes 2007-04-12 00:32:05 +00:00
Denis Vlasenko
50f7f446ec bb_full_fd_action: remove potential xmalloc from NOFORK path
cat: stop using stdio.h opens
libbb: introduce & use open[3]_or_warn
function                                             old     new   delta
open3_or_warn                                          -      54     +54
bb_cat                                               115     144     +29
open_or_warn                                           -      25     +25
unlzma                                              2404    2412      +8
chattr_main                                          334     339      +5
xstrtoul_range_sfx                                   251     255      +4
telnet_main                                         1514    1510      -4
static.opt                                             4       -      -4
qgravechar                                           122     118      -4
fuser_add_pid                                         61      54      -7
fuser_add_inode                                      154     147      -7
writeFileToTarball                                  1542    1534      -8
refresh                                             1156    1148      -8
do_show                                              856     846     -10
read_leases                                          212     200     -12
setup_redirects                                      236     222     -14
iproute_list_or_flush                               1582    1568     -14
read_config                                          427     411     -16
write_leases                                         284     264     -20
hash_file                                            338     318     -20
copy_file                                           1760    1740     -20
do_iproute                                          2610    2588     -22
bb_full_fd_action                                    320     269     -51
open_to_or_warn                                      103      49     -54
fuser_main                                          1660    1596     -64
.rodata                                           131160  131096     -64
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 4/19 up/down: 125/-423)        Total: -298 bytes
2007-04-11 23:20:53 +00:00
Bernhard Reutner-Fischer
febe3c4211 - sed -e "s/char[[:space:]]*\*[[:space:]]*argv\[\]/char **argv/g" 2007-04-04 20:52:03 +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
b6aae0f381 preparatory patch for -Wwrite-strings #2 2007-01-29 22:51:25 +00:00
Denis Vlasenko
9225854144 mostly style fixes 2006-11-01 10:25:35 +00:00
Denis Vlasenko
e1a0d486e4 message string changes, mostly for consistency, also -32 bytes in .rodata 2006-10-20 13:28:22 +00:00
Denis Vlasenko
67b23e6043 getopt_ulflags -> getopt32.
It is impossible to formulate sane ABI based on
size of ulong because it can be 32-bit or 64-bit.
Basically it means that you cannot portably use
more that 32 option chars in one call anyway...
Make it explicit.
2006-10-03 21:00:06 +00:00
Rob Landley
e9a7a6212b Change license statements (and clean up headers) on some of the files that
Erik or I are primary copyright holders on.
2006-09-22 02:52:41 +00:00
"Robert P. J. Day"
63fc1a9e08 Standardize on the vi editing directives being on the first line. 2006-07-02 19:47:05 +00:00
Rob Landley
22d26fc6ae Patch from Yann Morin to put BLKGETSIZE64 in platform.h had rather a lot of
fallout due to the #include <sys/mount.h>.  Removed that #include from various
applets and fixed up those that were unhappy when that #include was made
because they'd block copied stuff out of it.  (Sigh.)
2006-06-15 15:49:36 +00:00
Rob Landley
094b9f7e1d Shut up the warning "implicit declaration of strlen". 2006-05-10 17:41:21 +00:00
Rob Landley
3ea05d3222 Fix missing copyright and license notice. 2006-03-21 18:20:40 +00:00
Rob Landley
e2b428cbb1 Use lstat() instead of stat so /init being a symlink doesn't screw people up.
(And use it consistently, for size reasons.)
2006-03-20 01:43:29 +00:00
Rob Landley
d05981eaf1 Fix off by one error. (I know I had a reason for doing that, but I have _no_
idea what it was...)
2006-02-14 07:33:45 +00:00
Tim Riker
c1ef7bdd8d just whitespace 2006-01-25 00:08:53 +00:00