| Age | Commit message (Collapse) | Author |
|---|
|
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>
|
|
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>
|
|
function old new delta
bb_verror_msg 386 466 +80
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
function old new delta
bb_verror_msg 380 386 +6
syslog_level - 1 +1
crondlog 165 108 -57
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
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>
|
|
No code changes.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
syslog.h and syslog(...) may not exist in such configuration
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
function old new delta
buffer_fill_and_print 179 196 +17
fflush_all - 9 +9
spawn 87 92 +5
rtcwake_main 455 453 -2
...
alarm_intr 93 84 -9
readcmd 1072 1062 -10
bb_ask 345 333 -12
more_main 845 832 -13
flush_stdout_stderr 42 23 -19
xfflush_stdout 27 - -27
flush_stderr 30 - -30
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 2/50 up/down: 31/-397) Total: -366 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
|
text data bss dec hex filename
808035 611 6868 815514 c719a busybox_old
804472 611 6868 811951 c63af busybox_unstripped
|
|
|
|
|
|
losetup: print name of loop device in error messages
|
|
text data bss dec hex filename
9836 0 0 9836 266c busybox.t1/networking/httpd.o.orig
9724 0 0 9724 25fc busybox.t2/networking/httpd.o
9657 0 0 9657 25b9 busybox.t3/networking/httpd.o
9342 0 0 9342 247e busybox.t4/networking/httpd.o
9342 0 0 9342 247e busybox.t5/networking/httpd.o
9262 0 0 9262 242e busybox.t6/networking/httpd.o
9283 0 0 9283 2443 busybox.t7/networking/httpd.o
9334 0 0 9334 2476 busybox.t8/networking/httpd.o
|
|
|
|
|
|
|
|
|
|
__va_copy.
|
|
|
|
|
|
bb_xx_msg will ever try to send output to syslog.
Add "select CONFIG_FEATURE_SYSLOG" to relevant applets.
This allows to omit syslog code if we do not have
any syslog-capable applets in the build.
|
|
bb_xx_msg calls, and convert networking/* to it.
The rest of bbox will be converted gradually.
|
|
- use shorter boilerplate while at it
|
|
definitions. (That should only be on prototypes.)
|
|
|
|
|
|
|
|
-Erik
|
|
|
|
Update libbb.h, per suggestion from Vladimir, to include __attribute__((format
(printf ...))) stuff
-Erik
|
