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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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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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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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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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Before:
># busybox_old rmmod gtrhfhdfghdf
rmmod: can't unload 'gtrhfhdfghdf': unknown symbol in module, or unknown parameter
After:
># busybox rmmod gtrhfhdfghdf
rmmod: can't unload module 'gtrhfhdfghdf': No such file or directory
function old new delta
modprobe_main 726 721 -5
do_modprobe 599 590 -9
rmmod_main 187 169 -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-32) Total: -32 bytes
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
packed_usage 28706 28623 -83
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 <dvlasenk@redhat.com>
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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.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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"modutils/rmmod can't remove modules with dash in name on 2.4 kernels"
function old new delta
rmmod_main 187 220 +33
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- a lot faster (linear algorithmic complexity, smaller memory foot print)
- a lot smaller (the old code was overly complicated)
- loading of aliases is now module-init-tools compliant
- blacklisting is done correctly (-b option added)
- module argument quoting done right
- depmod now correctly generates modules.symbols and modules.alias
add/remove: 16/21 grow/shrink: 4/6 up/down: 6930/-9316 Total: -2386 bytes
text data bss dec hex filename
806039 592 6680 813311 c68ff busybox_old
803498 592 6676 810766 c5f0e busybox_unstripped
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*: remove a few inline keywords
no code changes
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EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
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263 bytes saved.
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(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
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function old new delta
bb_basename - 26 +26
sv_main 1226 1225 -1
passwd_main 1985 1983 -2
showdirs 482 478 -4
sendCgi 1811 1807 -4
make_device 1354 1350 -4
handleIncoming 2443 2439 -4
func_name 82 78 -4
service_name 2292 2285 -7
main 909 901 -8
cmp_main 555 547 -8
test_main 434 422 -12
act 228 216 -12
find_pair 180 164 -16
rmmod_main 298 280 -18
find_pid_by_name 156 134 -22
modprobe_main 1606 1576 -30
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/16 up/down: 26/-156) Total: -130 bytes
text data bss dec hex filename
734933 3028 14400 752361 b7ae9 busybox_old
734801 3028 14400 752229 b7a65 busybox_unstripped
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tr: stop using globals needlessly.
code: -103 bytes
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*: s/include "busybox.h"/include "libbb.h"
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no preceding prototype
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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.
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pointer warning on certain gcc versions (and saves 38 bytes).
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and eventual platform specific includes in early.
- remove two supposedly superfluous newlines from ...error_msg() in modprobe
and use shorter boilerplate while at it.
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- rename get_kernel_revision() to get_linux_version_code
from Robert P. J. Day
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definitions. (That should only be on prototypes.)
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for getopt, convert to bb_getopt_ulflags(), reduce memory usage - xmalloc to bb_common_bufsiz1, size reduce over 200 bytes
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Please see the attached patch for the following crash with busybox'
2.6 rmmod support
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module name with a '_'.
-Erik
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lsmod and rmmod when using 2.6.x module support
-Erik
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half way converted, and still used the old delete_module(),
call rather than a syscall, in one spot.
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