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2017-07-25ash: [SHELL] Optimize dash -c "command" to avoid a forkDenys Vlasenko
Upstream commit: Date: Thu, 7 Jul 2011 13:58:48 +0800 [SHELL] Optimize dash -c "command" to avoid a fork On Sun, Apr 10, 2011 at 07:36:49AM +0000, Jonathan Nieder wrote: > From: Jilles Tjoelker <jilles@stack.nl> > Date: Sat, 13 Jun 2009 16:17:45 -0500 > > This change only affects strings passed to -c, when the -s option is > not used. > > Use the EV_EXIT flag to inform the eval machinery that the string > being passed is the entirety of input. This way, a fork may be > omitted in many special cases. > > If there are empty lines after the last command, the evalcmd will not > see the end early enough and forks will not be omitted. The same thing > seems to happen in bash. > > Example: > sh -c 'ps lT' > No longer shows a shell process waiting for ps to finish. > > [jn: ported from FreeBSD SVN r194128. Bugs are mine.] > > Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Instead of detecting EOF using the input layer, I'm going to use the parser instead. In either case, we always have to read ahead in order to complete the parsing of the previous node. Therefore we always know whether there is more to come, except in the case where we see a newline/semicolon or similar. For the purposes of sh -c, this should be sufficient. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta evalstring 190 224 +34 ash_main 1014 1022 +8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 42/0) Total: 42 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: allow "trap NUM [SIG]..." syntaxDenys Vlasenko
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 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 19/-1) Total: 18 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: [REDIR] Replace GPL noclobberopen code with the FreeBSD versionDenys Vlasenko
Upstream commit: Date: Thu, 10 Mar 2011 16:52:13 +0800 [REDIR] Replace GPL noclobberopen code with the FreeBSD version Replace noclobberopen() from bash with the FreeBSD code for noclobber opens. This also reduces code size by eliminating an unnecessary check. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta changepath 192 194 +2 localcmd 366 364 -2 expmeta 521 517 -4 redirect 1210 1135 -75 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/3 up/down: 2/-81) Total: -79 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: sync up with dash with respect to redirection escapingDenys Vlasenko
We fixed the problem differently than they. Let's not deviate. Upstream commit: Date: Thu, 27 May 2010 20:07:29 +1000 [EXPAND] Fix corruption of redirections with byte 0x81 In other ash variants, a partial implementation of ksh-like cmd >file* adds and removes CTLESC bytes ('\x81') in redirection filenames, preserving 8-bit transparency. Long ago, dash removed the code to add the CTLESC bytes, but not the code to remove them, causing corruption of filenames containing CTLESC. This commit removes the code to remove the CTLESC bytes. The CTLESC byte occurs frequently in UTF-8 encoded non-Latin text. This bug has been reported various times to Ubuntu and Debian (e.g. Launchpad Ubuntu #422298). This patch is the same as the one submitted by Alexander Korolkov in Ubuntu #422298. Signed-off-by: Jilles Tjoelker <jilles@stack.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta changepath 194 192 -2 expandarg 1000 984 -16 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-18) Total: -18 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: [VAR] Move unsetvar functionality into setvareqDenys Vlasenko
Upstream commit: Date: Tue, 25 May 2010 20:55:05 +0800 [VAR] Move unsetvar functionality into setvareq This patch moves the unsetvar code into setvareq so that we can no have a pathological case of an unset variable hanging around unless it has a bit pinning it like VEXPORT. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta setvareq 227 303 +76 expmeta 517 521 +4 localcmd 364 366 +2 unsetcmd 96 76 -20 unsetvar 129 7 -122 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/2 up/down: 82/-142) Total: -60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: import param_expand_default.tests from hushDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25hush: treat ${#?} as "length of $?"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25ash: add a few tests from hush-vars/*Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25volume_id: enable minix detectionDenys Vlasenko
function old new delta volume_id_probe_minix - 87 +87 fs2 64 68 +4 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 1/0 up/down: 91/0) Total: 91 bytes Patch by wdlkmpx <wdlkmpx@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24ash: fix comment, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24ash: copy three tests from hush_test/hush-signals/*Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24shell: some additions to *sh-misc/* testsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24tar: postpone creation of symlinks with "suspicious" targets. Closes 8411Denys Vlasenko
function old new delta data_extract_all 968 1038 +70 tar_main 952 986 +34 scan_tree 258 262 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 108/0) Total: 108 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24udhcpc: downgrade "MAC X:X:X:X:X:X" message to log2 levelDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24ash: add most of hush process subst testsDenys Vlasenko
ash passes these. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24hush: fix a case when redirect to a closed fd #1 is not restoring (closing) itDenys Vlasenko
function old new delta setup_redirects 200 245 +45 append_squirrel - 41 +41 save_fds_on_redirect 256 221 -35 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 86/-35) Total: 51 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24udhcpc[6]: downgrade "adapter index N" messages to log2 levelDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24udhcpc[6]: fix messages referring to select() while we use poll()Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24ash: add all hush parsing tests to ast testsDenys Vlasenko
All pass. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-24hush: use mempcpy where usefulDenys Vlasenko
function old new delta o_addblock 58 42 -16 expand_one_var 1618 1555 -63 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-79) Total: -79 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-23ash: fix for last commitDenys Vlasenko
"mempcpy(q, s, len) + len" is obviously no good :( Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-23ash: use mempcpy() in more placesDenys Vlasenko
Most changes are taken from dash. function old new delta single_quote 127 129 +2 stack_nputstr 28 29 +1 path_advance 209 202 -7 rmescapes 346 308 -38 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/2 up/down: 3/-45) Total: -42 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-22zcip: fix slow environment leakDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-22crond: do not assume setenv() does not leakDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-22libbb: avoid malloc/free in bb_unsetenv()Denys Vlasenko
function old new delta bb_unsetenv 55 83 +28 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-22crond: allow $SHELL and starting user's shell override DEFAULT_SHELL. Closes ↵Denys Vlasenko
6458 function old new delta crond_main 1134 1149 +15 fork_job 453 454 +1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ash: use mempcpy() where appropriateDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21basename: do not use argcDenys Vlasenko
function old new delta basename_main 153 148 -5 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21pgrep: fix "pgrep -v -P1"; also allow matching of comm - closes 10086Denys Vlasenko
function old new delta pgrep_main 662 720 +58 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ping: fix help text to show what parameter -p takesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ash: suppress readonly1.tests false positive; add readonly0.testsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ash: improve set -x to quote strings as necessaryDenys Vlasenko
Basen on the patch from Martijn Dekker <martijn@inlv.org> function old new delta evalcommand 1161 1302 +141 maybe_single_quote - 60 +60 getoptscmd 527 546 +19 readtoken1 2819 2823 +4 localcmd 366 364 -2 evaltreenr 495 479 -16 evaltree 495 479 -16 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/3 up/down: 224/-34) Total: 190 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21udhcpc[6]: on log level 1, three messages about raw socket is overkillDenys Vlasenko
Move first two messages to log2 level: 08:46:32.23824 udhcpc: opening raw socket on ifindex 2 08:46:32.23825 udhcpc: got raw socket fd 08:46:32.26354 udhcpc: created raw socket Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21ping: better config help text for FEATURE_FANCY_PINGDenys 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>
2017-07-20libarchive: FEATURE_LZMA_FAST should be visible if FEATURE_SEAMLESS_LZMADenys Vlasenko
While at it, tweak some config help texts. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20unzip: sanitize filename length: malloc(1234mb) is not funnyDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20unzip: implement -j, closes 9126Denys Vlasenko
function old new delta unzip_main 2642 2703 +61 packed_usage 31747 31770 +23 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 84/0) Total: 84 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20unzip: robustify overwrite checksDenys Vlasenko
function old new delta get_lstat_mode - 55 +55 unzip_main 2667 2642 -25 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 55/-25) Total: 30 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20unzip: support symlinks. Closes 10031Denys Vlasenko
function old new delta unzip_main 2519 2667 +148 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20bzcat,zcat: simplify code if gunzip/bunzip2 is not selectedDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20shell: optional support for read -t N.NNN, closes 10101Denys Vlasenko
function old new delta shell_builtin_read 1097 1277 +180 dump_procs 353 359 +6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20bootchartd: fix typo in commentDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-20bootchartd: prevent premature stop by device mapperUwe Geuder
Kernel thread kdmflush was recognized as display manager kdm, check for string length. Signed-off-by: Uwe Geuder <busybox2017-ugeuder@snkmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-19sparc: needs -fPICDenys Vlasenko
Pinted out by Thomas Petazzoni. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-19swapon/swapoff: trim config help textDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-19Update remaining menuconfig items with approximate applet sizesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-19od_bloaty: fix floating point outputRon Yorston
Currently od_bloaty does this: $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | busybox od -f od: invalid character 'F' in type string 'fF' $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | busybox od -t fD od: invalid character 'D' in type string 'fD' $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | busybox od -t f 0000000 0000010 The first two occur because the alphabetic length specifier isn't being properly skipped. The third is due to the empty length specifier being treated as alphabetic so we fall off the end of the FDL_sizeof array with undetermined consequences. Coreutils defaults to printing a double in this case. With this patch the output is: $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | ./busybox od -f 0000000 0.0000000e+00 0.0000000e+00 0000010 $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | ./busybox od -t fD 0000000 0.000000000000000e+00 0000010 $ /bin/echo -en '\x00\x00\x00\x00\x00\x00\x00\x00' | ./busybox od -t f 0000000 0.000000000000000e+00 0000010 I guess nobody uses BusyBox od to print floating point numbers. Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18hdparm: remove contradicting size info in config helpDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18ash: remove contradicting size info in config helpDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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