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2021-12-17printf: allow 0 as a flag and allow multiple flagsRon Yorston
The '%' character in a format specification may be followed by one or more flags from the list "+- #0". BusyBox printf didn't support the '0' flag or allow multiple flags to be provided. As a result the formats '%0*d' and '%0 d' were considered to be invalid. The lack of support for '0' was pointed out by Andrew Snyder on the musl mailing list: https://www.openwall.com/lists/musl/2021/12/14/2 function old new delta printf_main 860 891 +31 .rodata 99281 99282 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 32/0) Total: 32 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-03-23timeout,top,watch,ping: parse NN.N fractional duration in locales with other ↵Denys Vlasenko
separators Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2019-07-02libbb: reduce the overhead of single parameter bb_error_msg() callsJames Byrne
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>
2018-12-28config: update size informationDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-10-30printf: fix printf "%u\n" +18446744073709551614Denys Vlasenko
function old new delta conv_strtoll 19 32 +13 conv_strtoull 49 61 +12 bb_strtoll 89 84 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 25/-5) Total: 20 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-10-19printf: fix printing +-prefixed numbersBernhard Reutner-Fischer
Thanks to Cristian Ionescu-Idbohrn for noticing. Also fix "%d" ' 42' to skip leading whitespace. function old new delta print_direc 435 454 +19 bb_strtoll 99 103 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 23/0) Total: 23 bytes Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2017-10-05whitespace and comment format fixes, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-10-05whitespace and comment format fixes, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-09-18regularize format of source file headers, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02config: do not use `a' quoting in help textsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21config: deindent all help textsDenys Vlasenko
Those two spaces after tab have no effect, and always a nuisance when editing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18Update menuconfig items with approximate applet sizesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18printf: fix format string sanity checkRon Yorston
One of the tests for printf checks for an invalid bare '%' in the format string: $ busybox printf '%' a b c printf: %: invalid format On x86_64 a slightly different test doesn't work correctly: $ busybox printf '%' d e f printf: invalid number 'd' printf: invalid number 'e' printf: invalid number 'f' On other platforms the test fails randomly depending on how the arguments are laid out in memory. There are two places in the code where strchr is used to determine if a character in the format string is valid. However, strchr also returns a valid pointer if the character being searched for is the null terminator thus causing the code to incorrectly suppose that a valid character has been found. Add explicit checks for the null terminator. Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10shells: make hush test optional, rename ASH_BUILTIN_foo -> ASH_fooDenys Vlasenko
This makes hash and ash more symmetrical wrt config menu and config options. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-23Convert all coreutils/* applets to "new style" applet definitionsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-01-31printf: short-circuit output when argument to %b includes \cRon Yorston
printf wasn't correctly handling \c in an argument to the %b format specifier. printf %bXX OK\\c returned 'OK\cXX' rather than the expected 'OK'. function old new delta printf_main 886 899 +13 Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-07printf: fix this case: printf "%b" '\0057usr\0057bin\n'Denys Vlasenko
It was not accepting \0NNN. Standard printf tool does. function old new delta printf_main 869 886 +17 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-07printf: trim help textDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-03-31move help text from include/usage.src.h to coreutils/*.cPere Orga
Signed-off-by: Pere Orga <gotrunks@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-10-23libbb: introduce and use strcpy_and_process_escape_sequencesDenys Vlasenko
function old new delta strcpy_and_process_escape_sequences - 50 +50 bb_process_escape_sequence 148 138 -10 printf_main 789 776 -13 getty_main 1897 1831 -66 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/3 up/down: 50/-89) Total: -39 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-29nandwrite: complain on malformed -s NUMDenys Vlasenko
Elsewhere: use common error message. -30 bytes net size change Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16*: make GNU licensing statement forms more regularDenys Vlasenko
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>
2009-06-27printf: (allegedly) fix testsuite failureDenys Vlasenko
Signed-off-by: Colin Watson <cjwatson@ubuntu.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-06-18printf: fix exit code on conversion errorDenys Vlasenko
Signed-off-by: Colin Watson <cjwatson@ubuntu.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-06-05printf: accept negative numbers for %x; sh: overflowed numbers are 0Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-03-03printf: fix 1.12.0 breakage (from %*d fix). It was misinterpreting "*"Denis Vlasenko
2009-01-04printf: make integer format strings print long long-sized values.Denis Vlasenko
function old new delta printf_main 668 834 +166 bb_strtoll - 84 +84 print_direc 391 431 +40 conv_strtoull - 19 +19 conv_strtoll - 19 +19 conv_strtoul 16 - -16 conv_strtol 16 - -16 ------------------------------------------------------------------------------ (add/remove: 4/2 grow/shrink: 2/0 up/down: 342/-32) Total: 296 bytes
2008-12-10ash: printf builtin with no arguments should not exitDenis Vlasenko
2008-07-25ash: dont allow e.g. exec <&10 to attach to stript's fd!Denis Vlasenko
function old new delta is_hidden_fd - 61 +61 redirect 1135 1164 +29 popstring 134 140 +6 printf_main 635 637 +2 evalvar 1374 1376 +2 echo_main 294 296 +2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 5/0 up/down: 102/0) Total: 102 bytes
2008-07-22fix all cases of strcpy on overlapping strings.Denis Vlasenko
2008-07-18printf: do not print garbage on "%Ld". closes bug 4214.Denis Vlasenko
function old new delta printf_main 633 637 +4 multiconvert 99 79 -20 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-20) Total: -16 bytes
2008-07-18printf: fix %b, fix several bugs in %*.*, fix compat issues withDenis Vlasenko
aborting too early, support %zd; expand testsuite function old new delta get_width_prec - 46 +46 multiconvert 82 99 +17 conv_strtod 44 54 +10 print_direc 382 391 +9 printf_main 629 633 +4 conv_strtoul 20 16 -4 conv_strtol 20 16 -4 my_xstrtoul 20 - -20 my_xstrtol 20 - -20 my_xstrtod 21 - -21 ------------------------------------------------------------------------------ (add/remove: 1/3 grow/shrink: 4/2 up/down: 86/-69) Total: 17 bytes
2008-07-17printf: protect against bogus format specifiers. Hopefully closes bug 4184Denis Vlasenko
2008-07-05*: rename ATTRIBUTE_XXX to just XXX.Denis Vlasenko
2008-06-01ash: optional printf builtin. +25 bytes if off, +35 if on.Denis Vlasenko
by Cristian Ionescu-Idbohrn.
2008-05-31printf: fix a trivial bugDenis Vlasenko
2008-05-31printf: code shrink by eliminating string alloc/copyDenis Vlasenko
function old new delta print_direc 428 382 -46
2008-05-19- use EXIT_{SUCCESS,FAILURE}. No object-code changesBernhard Reutner-Fischer
2008-05-18printf: fix printf -%s- foo, printf -- -%s- foo (bug 3354)Denis Vlasenko
function old new delta printf_main 577 548 -29
2007-10-11add -fvisibility=hidden to CC flags, mark XXX_main functionsDenis Vlasenko
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
2007-09-27introduce bb_putchar(). saves ~1800 on uclibc (less on glibc).Denis Vlasenko
2007-05-26usage.c: remove reference to busybox.hDenis Vlasenko
*: s/include "busybox.h"/include "libbb.h"
2007-03-09printf: allow hex/oct numbers; move functions aroundDenis Vlasenko
so that we have no forward declarations
2007-02-03suppress warnings about easch <applet>_main() havingDenis Vlasenko
no preceding prototype
2007-01-29preparatory patch for -Wwrite-strings #1Denis Vlasenko
2006-11-27safe_strtoXX interface proved to be a bit unconvenient.Denis Vlasenko
Remove it, introduce saner bb_strtoXX. Saved ~350 bytes.
2006-10-08attempt to regularize atoi mess.Denis Vlasenko
2006-09-23remove unneeded #includes, fix indentationDenis Vlasenko
2006-04-03- make append_option and multiconvert static.Bernhard Reutner-Fischer
2006-02-28more busybox's style: close bug 745"Vladimir N. Oleynik"
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