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function old new delta
packed_usage 33589 33552 -37
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Back in 2007, commit 0c97c9d43707 ("'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>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Using a negative pid to send TERM to a process group results in an
obscure error:
$ ./busybox kill -12345
kill: bad signal name '12345'
This is intended. Manpage says:
ARGUMENTS
pid Each pid can be one of four things:
...
-n where n is larger than 1. All processes in process group
n are signaled. When an argument of the form '-n' is
given, and it is meant to denote a process group, either
a signal must be specified first, or the argument must be
preceded by a '--' option, otherwise it will be taken as
the signal to send.
However, we did not support "--". Add this capability to BusyBox.
function old new delta
kill_main 993 999 +6
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
run_nofork_applet 258 280 +22
readlink_main 112 123 +11
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 33/0) Total: 33 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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While at it, make get_signum() return -1 for numeric strings >= NSIG.
function old new delta
trapcmd 292 306 +14
get_signum 295 300 +5
builtin_trap 413 412 -1
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 19/-1) Total: 18 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Those two spaces after tab have no effect, and always a nuisance when editing.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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It confused me more than once
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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* Fix a bug with a configuration in which the shell's kill builtin
would be mistreated as a killall command (i.e. '-q' works, and
'kill process_name' succeeds when it shouldn't):
CONFIG_ASH_JOB_CONTROL=y
CONFIG_HUSH_KILL=y
# CONFIG_KILL is not set
CONFIG_KILLALL=y
# CONFIG_KILLALL5 is not set
* Optimize out unneeded code when the relevant applets are not
selected.
* Move kbuild lines about shells' kill builtins from Kbuild.src to
kill.c, to accompany the new HAVE_SH_KILL macro. I hope this would
make maintanence a little bit easier.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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ash kill builtin depends on the job control config option.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Also made it and printf, type and wait builtins optional.
function old new delta
builtin_kill - 323 +323
bltins1 336 348 +12
builtin_type 114 116 +2
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(add/remove: 1/0 grow/shrink: 2/0 up/down: 337/0) Total: 337 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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ix ash "kill %1" not working if CONFIG_ASH is disabled but
ash is launched by 'sh' or 'bash' name
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
kill_main 992 947 -45
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
kill_main 943 992 +49
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
kill_main 913 942 +29
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Alexey Fomenko <ext-alexey.fomenko@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 28706 28623 -83
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
killcmd 109 224 +115
kill_main 882 910 +28
changepath 194 195 +1
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(add/remove: 0/0 grow/shrink: 3/0 up/down: 144/0) Total: 144 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Elsewhere: use common error message. -30 bytes net size change
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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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>
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text data bss dec hexfilename
838650 8009 0 846659 ceb43busybox_old
838519 8009 0 846528 ceac0busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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kill_main 706 884 +178
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by Steve Bennett (steveb AT workware.net.au)
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Some are fixing real bugs.
function old new delta
syslogd_main 938 958 +20
get_signum 136 143 +7
obj_load 777 782 +5
recv_from_to 210 214 +4
get_next_block 1795 1799 +4
display_topmem_process_list 1117 1121 +4
logread_main 484 487 +3
buffer_fill_and_print 73 76 +3
kill_main 687 689 +2
ll_remember_index 240 241 +1
do_stats 452 453 +1
if_readconf 166 165 -1
display_process_list 1192 1191 -1
run_applet_and_exit 507 505 -2
print_signames 33 31 -2
parse_one_line 1092 1090 -2
find_out_spec 57 55 -2
add_ksymoops_symbols 421 419 -2
ash_main 1407 1402 -5
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(add/remove: 0/0 grow/shrink: 11/8 up/down: 54/-17) Total: 37 bytes
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just build relevant source and use xxx_main functions.
build system: add a special case when we have exactly one applet enabled
(makes "true", "false", "basename" REALLY tiny).
getopt32: do not use stdio.
function old new delta
getopt32 1385 1412 +27
make_device 1187 1200 +13
basename_main 120 127 +7
tcpudpsvd_main 1922 1926 +4
testcmd 5 - -5
echocmd 5 - -5
fuser_main 1243 1231 -12
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(add/remove: 0/2 grow/shrink: 4/1 up/down: 51/-22) Total: 29 bytes
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EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
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*: s/include "busybox.h"/include "libbb.h"
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ps: fix warning, make a bit smaller
kill -l: make smaller & know much more signals
function old new delta
get_signum 121 153 +32
kill_main 826 843 +17
get_signame 44 36 -8
signals 252 224 -28
.rodata 131955 131923 -32
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/3 up/down: 49/-68) Total: -19 bytes
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# make bloatcheck
function old new delta
evaltreenr 644 654 +10
evaltree 644 654 +10
parse_conf 1440 1444 +4
dpkg_deb_main 426 429 +3
ed_main 3319 3321 +2
passwd_main 2093 2091 -2
kill_main 830 826 -4
singlemount 4609 4601 -8
find_command 962 954 -8
get_lcm 123 105 -18
.rodata 132243 132147 -96
killcmd 449 120 -329
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/7 up/down: 29/-465) Total: -436 bytes
# size busybox_old busybox_unstripped
text data bss dec hex filename
723901 2940 27504 754345 b82a9 busybox_old
723457 2940 27504 753901 b80ed busybox_unstripped
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no preceding prototype
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Use it where appropriate.
Stop scanning /etc/passwd *for every process*!!! (uid->username)
top: reduce memory usage - we won't save unneeded fields
from /proc info anymore. Downside: ~+250 bytes of code
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style fixes
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find_pid_by_name() was returning 0 or -1 in last array element,
but -1 was never checked. We can use just 0 intead.
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