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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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The behaviour introduced by commit 31c765081dc4 ("watchdog: stop
watchdog first on startup") causes warnings in the kernel log when the
nowayout feature is enabled:
[ 16.212184] watchdog: watchdog0: nowayout prevents watchdog being stopped!
[ 16.212196] watchdog: watchdog0: watchdog did not stop!
The latter may also appear by itself in case the watchdog is of the
type that cannot be stopped once started (e.g. the common
always-running gpio_wdt kind).
These warnings can be somewhat ominous and distracting, so allow
configuring whether to use this open-write-close-open sequence rather
than just open. Also saves a bit of .text when disabled:
function old new delta
shutdown_on_signal 31 58 +27
watchdog_main 339 306 -33
shutdown_watchdog 34 - -34
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 27/-67) Total: -40 bytes
Make it default n:
- It's a workaround for one specific type of watchdog (and
that seems to be a defect in the kernel driver)
- Even when not enabled in busybox config, it can easily be
implemented outside busybox
- Code size
- Commit 31c765081dc4 should be considered a regression for all the
boards that now end up with KERN_CRIT warnings in dmesg.
- The author of that commit said "This use case is evidently rare, so
if it is indeed causing problems for other people I'd OK then I
understand whatever needs to be done." in the v1 thread.
Cc: Matt Spinler <mspinler@linux.vnet.ibm.com>
Cc: deweloper@wp.pl
Cc: tito <farmatito@tiscali.it>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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separators
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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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
zxc_vm_process 6464 6498 +34
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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before:
Tiny RPN calculator. Operations:
+, -, *, /, %, ~, ^, |,
p - print top of the stack without popping
f - print entire stack
k - pop the value and set the precision
i - pop the value and set input radix
o - pop the value and set output radix
After:
Tiny RPN calculator. Operations:
Arithmetic: + - * / % ^
~ - divide with remainder
| - modular exponentiation
v - square root
p - print top of the stack without popping
f - print entire stack
k - pop the value and set precision
i - pop the value and set input radix
o - pop the value and set output radix
function old new delta
packed_usage 33519 33565 +46
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
fputs_stdout - 12 +12
zxc_vm_process 7237 7230 -7
yes_main 85 78 -7
write_block 380 373 -7
wrapf 305 298 -7
strings_main 437 430 -7
show_bridge 353 346 -7
rev_main 384 377 -7
put_prompt_custom 58 51 -7
put_cur_glyph_and_inc_cursor 168 161 -7
print_numbered_lines 152 145 -7
print_named_ascii 130 123 -7
print_name 135 128 -7
print_login_issue 386 379 -7
print_ascii 208 201 -7
powertop_main 1249 1242 -7
od_main 1789 1782 -7
logread_main 518 511 -7
head_main 804 797 -7
display_process_list 1319 1312 -7
cut_main 1002 995 -7
bb_dump_dump 1550 1543 -7
bb_ask_noecho 393 386 -7
baseNUM_main 702 695 -7
expand_main 755 745 -10
dumpleases_main 497 487 -10
write1 12 - -12
putcsi 37 23 -14
print_login_prompt 55 41 -14
paste_main 525 511 -14
cat_main 440 426 -14
print_it 245 230 -15
print_addrinfo 1188 1171 -17
print_rule 770 750 -20
print_linkinfo 842 822 -20
httpd_main 791 771 -20
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341) Total: -329 bytes
Signed-off-by: Ron Yorston <rmy@pobox.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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function old new delta
xc_read_line 353 344 -9
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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shells
function old new delta
xgettimeofday - 11 +11
get_local_var_value 280 281 +1
svlogd_main 1323 1322 -1
change_epoch 67 66 -1
timestamp_and_log 461 458 -3
hwclock_main 301 298 -3
fmt_time_bernstein_25 135 132 -3
step_time 331 326 -5
script_main 1207 1202 -5
machtime 34 28 -6
curtime 61 54 -7
ts_main 423 415 -8
nmeter_main 761 751 -10
gettime1900d 67 46 -21
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/12 up/down: 12/-73) Total: -61 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
finalize 348 343 -5
parse_resolvconf 306 299 -7
list_i2c_busses_and_exit 495 483 -12
bootchartd_main 1091 1076 -15
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(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-39) Total: -39 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
xc_vm_init 640 682 +42
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
man_main 807 942 +135
is_section_name - 52 +52
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(add/remove: 1/0 grow/shrink: 1/0 up/down: 187/0) Total: 187 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
xc_read_line 324 353 +29
free_line_input_t 34 39 +5
xc_vm_init 656 640 -16
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-16) Total: 18 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
procps_scan 1121 1118 -3
getpagesize 6 - -6
rpm_main 1037 1027 -10
rpm2cpio_main 120 110 -10
ptok 38 21 -17
time_main 1282 1261 -21
mkswap_main 317 278 -39
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(add/remove: 0/2 grow/shrink: 0/6 up/down: 0/-106) Total: -106 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 33545 33581 +36
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
packed_usage 33547 33545 -2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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text data bss dec hex filename
1021236 559 5052 1026847 fab1f busybox_old
1021120 559 5052 1026731 faaab busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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text data bss dec hex filename
1021988 559 5052 1027599 fae0f busybox_old
1021236 559 5052 1026847 fab1f busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
msleep - 45 +45
watchdog_main 271 266 -5
common_traceroute_main 3546 3530 -16
beep_main 277 248 -29
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(add/remove: 1/0 grow/shrink: 0/3 up/down: 45/-50) Total: -5 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
chat_main 1300 1295 -5
finalize_tty_attrs 80 70 -10
getty_main 1538 1519 -19
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(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-34) Total: -34 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
sleep1 - 9 +9
run_shutdown_and_kill_processes 97 95 -2
restore_state_and_exit 116 114 -2
reread_partition_table 67 65 -2
flush_buffer_cache 80 78 -2
chat_main 1302 1300 -2
timeout_main 310 307 -3
telnet_main 1235 1232 -3
stop_handler 86 83 -3
process_action 1078 1075 -3
nbdclient_main 1185 1182 -3
init_main 789 786 -3
getty_main 1541 1538 -3
do_time 410 407 -3
runsv_main 1682 1677 -5
pause_and_low_level_reboot 59 54 -5
inetd_main 1917 1911 -6
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/16 up/down: 9/-50) Total: -41 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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PLATFORM_LINUX is a hidden configuration option which is disabled by
default and enabled at over a hundred locations for features that are
deemed to be Linux specific.
The only effect of PLATFORM_LINUX is to control compilation of
libbb/match_fstype.c. This file is only needed by mount and umount.
Remove all references to PLATFORM_LINUX and compile match_fstype.c
if mount or umount is enabled.
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
lsscsi_main 298 302 +4
get_line 56 45 -11
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-11) Total: -7 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Some editors (like vim) use renaming strategy to save file. That means
they save a file to some random name and then rename it to final
location. The advantage is that such save is atomic.
However, crontab -e holds open fd to the temporary file, meaning it
never sees the changes. The temporary file needs to be re-opened after
the editor terminates for the changes to properly save.
Fixes #12491
Signed-off-by: Gray Wolf <wolf@wolfsden.cz>
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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mim runs scripts from a specification file which can be thought
of as an extremely limited Makefile. Neither make variables nor
dependencies are supported. By default the file 'Mimfile' is read.
An example:
hello:
echo hello $1
clean:
rm -rf *
The command 'mim' or 'mim hello' will echo 'hello'. Unlike 'make'
arguments after the first are available to the script; they don't
specify additional targets.
mim isn't enabled by default. Enabling it increases the size of the
binary by about 500 bytes.
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
bc_num_cmp 249 259 +10
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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Without the 'U' unsigned suffix, gcc will throw a "integer constant is
so large that it is unsigned" warning.
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
xc_program_print 712 735 +23
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
zxc_vm_process 6884 6891 +7
Signed-off-by: Brian Foley <bpfoley@google.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This matches the behaviour of both GNU dc (as specified in
its man page), and BSD dc (where stack_popstring() pops
only if the head is a string.)
Add a couple of tests to verify this behavior.
function old new delta
zxc_vm_process 6882 6884 +2
Signed-off-by: Brian Foley <bpfoley@google.com>
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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function old new delta
mod 105 136 +31
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
check_under 20 21 +1
print_no_pop 32 27 -5
pop 24 18 -6
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(add/remove: 0/0 grow/shrink: 1/2 up/down: 1/-11) Total: -10 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Between Busybox 1.24.2 and 1.25.0 the bb_info_msg() function was
eliminated and calls to it changed to be bb_error_msg(). The downside of
this is that daemons now log all messages to syslog at the LOG_ERR level
which makes it hard to filter errors from informational messages.
This change optionally re-introduces bb_info_msg(), controlled by a new
option FEATURE_SYSLOG_INFO, restores all the calls to bb_info_msg() that
were removed (only in applets that set logmode to LOGMODE_SYSLOG or
LOGMODE_BOTH), and also changes informational messages in ifplugd and
ntpd.
The code size change of this is as follows (using 'defconfig' on x86_64
with gcc 7.3.0-27ubuntu1~18.04)
function old new delta
bb_info_msg - 182 +182
bb_vinfo_msg - 27 +27
static.log7 194 198 +4
log8 190 191 +1
log5 190 191 +1
crondlog 45 - -45
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 3/0 up/down: 215/-45) Total: 170 bytes
If you don't care about everything being logged at LOG_ERR level
then when FEATURE_SYSLOG_INFO is disabled Busybox actually gets smaller:
function old new delta
static.log7 194 200 +6
log8 190 193 +3
log5 190 193 +3
syslog_level 1 - -1
bb_verror_msg 583 581 -2
crondlog 45 - -45
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 3/1 up/down: 12/-48) Total: -36 bytes
Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
static.mpl - 12 +12
packed_usage 33307 33316 +9
man_main 857 851 -6
add_MANPATH 148 138 -10
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/2 up/down: 21/-16) Total: 5 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If the MANPATH environment variable isn't set a provisional default
path of /usr/man is placed in man_path_list. This is only used if a
configuration file doesn't contain an alternative path.
If a configuration file lists the default path first:
MANPATH /usr/man:/usr/share/man
add_MANPATH() sees that the default entry is already present and skips
it. As a result man_path_list only contains the second and subsequent
components of the configured MANPATH.
In such cases the path should not be skipped.
function old new delta
add_MANPATH 170 183 +13
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(add/remove: 0/0 grow/shrink: 1/0 up/down: 13/0) Total: 13 bytes
Signed-off-by: Ron Yorston <rmy@pobox.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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function old new delta
ts_main 398 376 -22
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
ts_main 401 398 -3
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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