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2017-08-07noexec: consolidate codeDenys Vlasenko
function old new delta run_noexec_applet_and_exit - 61 +61 find_applet_by_name 128 124 -4 run_applet_no_and_exit 441 434 -7 tryexec 169 152 -17 pseudo_exec_argv 338 321 -17 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/6 up/down: 61/-48) Total: 13 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-07noexec: do GETOPT_RESET() before entering APPLET_main()Denys Vlasenko
hush -c 'yes | head -1' was not happy. function old new delta tryexec 159 169 +10 pseudo_exec_argv 328 338 +10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-07noexec: set comm field for noexecsDenys Vlasenko
function old new delta set_task_comm - 18 +18 tryexec 152 159 +7 pseudo_exec_argv 321 328 +7 main 106 97 -9 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/2 up/down: 34/-13) Total: 23 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-07free,stat: make NOEXECDenys Vlasenko
pkill/pgrep/pidof uncovered another quirk: what about noexec's _process names_? Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-06ash: do not set a signal to SIG_DFL if it already isDenys Vlasenko
function old new delta setsignal 312 338 +26 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04make 17 state-changing execing applets (ex: "nice PROG ARGS") noexecDenys Vlasenko
The applets with "<applet> [opts] PROG ARGS" API very quickly exec another program, noexec is okay for them: chpst/envdir/envuidgid/softlimit/setuidgid chroot chrt ionice nice nohup setarch/linux32/linux64 taskset cttyhack "reset" and "sulogin" applets don't have this form, but also exec another program at once, thus made noexec too. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04ash: BASH_XTRACEFD bashismDenys Vlasenko
Based on patch by Johannes Schindelin <johannes.schindelin@gmx.de> function old new delta evalcommand 1447 1500 +53 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04ash: remove no-longer-used variableJohannes Schindelin
As of 035486c75 (ash: significant overhaul of redirect saving logic, 2017-07-31), the sv_pos variable is no longer used (just assigned to, with no further effect). Let's just remove it. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04ash: INT_OFF/INT_ON around run_nofork_applet()Denys Vlasenko
function old new delta evalcommand 1441 1447 +6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04sheel: improve comments on signal handlingDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-03ash: add a fixme comment at run_nofork_appletDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-03nofork: fix a bug uncovered by hush testsuite (forgotten fflush)Denys Vlasenko
function old new delta run_nofork_applet 280 287 +7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02hush: do not accept "if() { echo; }" function defDenys Vlasenko
function old new delta parse_stream 2634 2692 +58 msg_and_die_if_script - 21 +21 syntax_error_unexpected_ch 41 46 +5 syntax_error_at 14 18 +4 die_if_script 31 28 -3 setup_redirects 319 308 -11 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/2 up/down: 88/-14) Total: 74 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02line editing: make read_line_input() not take timeout paramDenys Vlasenko
It's almost always -1. function old new delta read_line_input 3902 3912 +10 new_line_input_t 24 31 +7 pgetc 583 585 +2 save_command_ps_at_cur_history 80 78 -2 read_line 76 74 -2 fgetc_interactive 246 244 -2 addLines 84 82 -2 doCommands 2226 2222 -4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/5 up/down: 19/-12) Total: 7 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02hush: make SIGINT handling visually less confusingDenys Vlasenko
$ echo $$ 18448 $ echo $? <wait here, run "kill -INT 18448" in other shell><press enter> <=== NOTHING?? $ That empty line does not look right. After this patch: $ echo $$ 18448 $ echo $? <wait here, run "kill -INT 18448" in other shell><press enter> ^C $ function old new delta fgetc_interactive 245 246 +1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02NOFORK fixesDenys Vlasenko
"rm -i FILE" and "yes" can now be interrupted by ^C in hush. This also now works: $ usleep 19999999 ^C $ echo $? 130 function old new delta run_pipe 1668 1711 +43 pseudo_exec_argv 312 321 +9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 52/0) Total: 52 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-02do not use `a' quoting style in commentsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31ash: align --login code with dashDenys Vlasenko
Upstream commit: Date: Sun, 13 Jul 2008 22:34:50 +0800 [OPTIONS] Added support for -l This patch adds support for the -l option (login shell) as required by the LSB. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> It's a bit bigger, but gets rid of one global variable function old new delta options 554 576 +22 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31hush: remove redundant "G_flag_return_in_progress = -1"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31hush: fix "true | func_with_return" not allowing return.Denys Vlasenko
function old new delta pseudo_exec_argv 305 312 +7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31ash: fix display of ">&-" redirect in job stringsDenys Vlasenko
function old new delta cmdtxt 558 569 +11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31hush: functions have priority over builtins (!)Denys Vlasenko
function old new delta pseudo_exec_argv 291 305 +14 run_pipe 1560 1555 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 14/-5) Total: 9 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31hush: if STANDALONE, close interactive fd for NOEXECed childrenDenys Vlasenko
function old new delta pseudo_exec_argv 291 305 +14 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31ash,hush: ">&10" redirects to script/tty fds should not workDenys Vlasenko
The fact that shell has open fds to tty and/or scripts should be unobservable, if possible. In particular, if redirect tries to dup one of them via ">&script_fd", it's better to pretend that script_fd is closed, and thus redirect fails with EBADF. Fixes these two testcase failures: ash-redir/redir_to_bad_fd.tests hush-redir/redir_to_bad_fd3.tests function old new delta redirect 1018 1129 +111 setup_redirects 250 359 +109 readtoken1 2651 2655 +4 cmdloop 185 187 +2 changepath 194 195 +1 save_fd_on_redirect 203 194 -9 evaltree 501 484 -17 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/2 up/down: 227/-26) Total: 201 bytes text data bss dec hex filename 914553 485 6848 921886 e111e busybox_old 914754 485 6848 922087 e11e7 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31ash: significant overhaul of redirect saving logicDenys Vlasenko
New code is similar to what hush is doing. Make CLOSED to -1: same as dash. popredir() loses "restore" parameter: same as dash. COPYFD_RESTORE bit is no longer necessary. This change fixes this interactive bug: $ ls -l /proc/$$/fd 10>&- ash: can't set tty process group: Bad file descriptor ash: can't set tty process group: Bad file descriptor [1]+ Done(2) ls -l /proc/${\$}/fd 10>&4294967295 function old new delta unwindredir 29 27 -2 tryexec 154 152 -2 evaltree 503 501 -2 evalcommand 1369 1367 -2 cmdloop 187 185 -2 redirect 1029 1018 -11 popredir 153 123 -30 need_to_remember 36 - -36 is_hidden_fd 68 - -68 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 0/7 up/down: 0/-155) Total: -155 bytes text data bss dec hex filename 914572 485 6848 921905 e1131 busybox_old 914553 485 6848 921886 e111e busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31hush: massage redirect code to be slightly more like ashDenys Vlasenko
function old new delta save_fd_on_redirect - 203 +203 xdup_CLOEXEC_and_close - 75 +75 setup_redirects 245 250 +5 xdup_and_close 72 - -72 save_fds_on_redirect 221 - -221 ------------------------------------------------------------------------------ (add/remove: 2/2 grow/shrink: 1/0 up/down: 283/-293) Total: -10 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-31ash: remove REDIR_SAVEFD2Denys Vlasenko
function old new delta evalcommand 1364 1369 +5 redirect 1055 1014 -41 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 5/-41) Total: -36 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: if !ENABLE_ASH_EXPAND_PRMT, disable PSSYNTAX codeDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: [REDIR] Fix popredir on abnormal exit from built-inDenys Vlasenko
Upstream commit: Date: Thu, 27 May 2010 15:03:46 +0800 [REDIR] Fix popredir on abnormal exit from built-in Just like the poplocalvar problem recently fixed, redirections can also be leaked in case of an abnormal exit. This patch fixes it using the same method as poplocalvar, by storing the previous redirection state and restoring to that point. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: [PARSER] Add FAKEEOFMARK for expandstrDenys Vlasenko
Upstream commit: Date: Thu, 27 Dec 2007 13:54:16 +1100 [PARSER] Add FAKEEOFMARK for expandstr Previously expandstr used the string "" to indicate that it needs to be treated just like a here-doc except that there is no terminator. However, the string "" is in fact a valid here-doc terminator so now that we deal with it correctly expandstr no longer works in the presence of new-lines in the prompt. This patch introduces the FAKEEOFMARK macro which does not equal any real EOF marker but is distinct from the NULL pointer which is used to indicate non-here-doc contexts. Thanks to Markus Triska for reporting this regression. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Unfortunately, I did not find the failing example for this old fix. I also tweaked the code which was added by this commit: " Date: Mon Sep 24 18:30:02 2007 +0000 ash: fix prompt expansion (Natanael Copa <natanael.copa@gmail.com>) " since other parts of code do expect expandstr() to use DQSYNTAX, not PSSYNTAX. function old new delta parse_stream 2609 2634 +25 setprompt_if 128 133 +5 read_profile 32 37 +5 evalcommand 1334 1339 +5 expandstr 122 120 -2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/1 up/down: 40/-2) Total: 38 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29hush: fix handling of empty heredoc EOF markerDenys Vlasenko
function old new delta parse_stream 2609 2634 +25 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: [PARSER] Removed noexpand/length check on eofmarkDenys Vlasenko
Upstream comment: Date: Sun, 11 Nov 2007 14:21:23 +0800 [PARSER] Removed noexpand/length check on eofmark On Tue, Oct 30, 2007 at 04:23:35AM +0000, Oleg Verych wrote: > > } 8<<"" > ====================== Actually this (the empty delim) only works with dash by accident. I've tried bash and pdksh and they both terminate on the first empty line which is what you would expect rather than EOF. The real Korn shell does something completely different. I've fixed this in dash to conform to bash/pdksh. > In [0] it's stated, that delimiter isn't evaluated (expanded), only > quoiting must be checked. That if() seems to be completely bogus. OK I agree. The reason it was there is because the parser would have already replaced the dollar sign by an internal representation. I've fixed it properly with this patch. Test case: cat <<- $a OK $a cat <<- "" OK echo OK Old result: dash: Syntax error: Illegal eof marker for << redirection OK echo OK New result: OK OK OK function old new delta parsefname 227 152 -75 readtoken1 2819 2651 -168 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-243) Total: -243 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: "Undo all redirections" comment is wrong, delete itDenys Vlasenko
No code changes. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-29ash: make tryexec(cmd) parameter const charDenys Vlasenko
Fewer casts this way. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-28ash: support platforms that don't have '%m' printf specifierRon Yorston
The '%m' conversion specifier prints an error message based on the current value of 'errno'. It is available in the GNU C library, Cygwin (since 2012), uClibc and musl. It is not available in various BSDs, BSD-derived systems (MacOS, Android) or Microsoft Windows. Use a symbol defined in platform.h to control how error messages can be formatted to display the 'errno' message. On platforms that support it use '%m'; on other platforms use '%s' and strerror(). On platforms that have '%m' there is essentially no change in the size of the binary. Otherwise: function old new delta redirect 1287 1310 +23 xtcsetpgrp 27 44 +17 dup2_or_raise 34 51 +17 setinputfile 267 275 +8 .rodata 163379 163371 -8 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/1 up/down: 65/-8) Total: 57 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-28ash: less hackish implementation of evaltreenr()Denys Vlasenko
Defining a function alias with __attribute__ ((alias("evaltree"),__noreturn__)) is not that usual, and clang had a bug which made it misunderstand this construct. Switch to: ALWAYS_INLINE NORETURN evaltreenr() { evaltree(); unreachable(); } Older gcc's do not know unreachable(), on them we pay the price of having a few extra calls to abort(): function old new delta evalsubshell 151 156 +5 evalpipe 357 362 +5 argstr 1141 1144 +3 On newer gcc, code size does not change. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: force inlining of a trivial functionDenys Vlasenko
function old new delta bltinlookup 5 - -5 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: revert previous implementation of "A=1 A=2 B=$A cmd" codeDenys Vlasenko
Reverts this: commit 0e6f661e23d358cca104c24f8438d0ec64df32f1 Date: Fri Feb 15 15:02:15 2008 +0000 ash: handle "A=1 A=2 B=$A; echo $B". closes bug 947. A different fix from upstream has been imported by previous six commits. Last seven commits, cumulative: function old new delta poplocalvars - 314 +314 mklocal - 288 +288 pushlocalvars - 48 +48 evalcommand 1372 1408 +36 unwindlocalvars - 22 +22 ash_main 1022 1029 +7 setvar 167 172 +5 localvar_stack - 4 +4 setvareq 303 302 -1 evalcase 271 269 -2 subevalvar 1202 1198 -4 localvars 4 - -4 cmdenviron 4 - -4 expandarg 984 973 -11 evalvar 589 574 -15 argstr 1164 1141 -23 dotcmd 335 303 -32 bltinlookup 51 5 -46 varvalue 709 596 -113 evalfun 456 270 -186 localcmd 364 44 -320 ------------------------------------------------------------------------------ (add/remove: 5/2 grow/shrink: 3/11 up/down: 724/-761) Total: -37 bytes text data bss dec hex filename 915353 485 6888 922726 e1466 busybox_old 915320 485 6880 922685 e143d busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Fix loss of variables when hash collidesDenys Vlasenko
Upstream commit: Date: Tue, 6 Jul 2010 17:40:53 +0800 [VAR] Fix loss of variables when hash collides Brian Koropoff reported that the new var patches broke the following script: #!/bin/dash GDM_LANG="bar" OPTION="foo" unset GDM_LANG # OPTION has mysteriously become unset echo "$OPTION" He correctly diagnosed this as a result of removing all variables in the hash chain preceding the one that should be removed in setvareq. He also provided a patch to fix this. This patch is based on his but without keeping the original vpp. As a result, we now store new variables at the end of the hash chain instead of the beginning. To make this work, setvareq/setvar now returns the vp pointer modified. In case they're used to unset a variable the pointer returned is undefined. This is because mklocal needs it and used to get it by assuming that the new variable always appear at the beginning of the chain. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Do not poplocalvars prematurely on regular utilitiesDenys Vlasenko
Upstream commit: Date: Thu, 27 May 2010 11:50:19 +0800 [VAR] Do not poplocalvars prematurely on regular utilities The recent cmdenviron removal broke regular utilities by calling poplocalvars too early. This patch fixes that by postponing the poplocalvars for regular utilities until they have completed. In order to ensure that local still works, it is now a special built-in. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Fix poplocalvar on abnormal exit from functionDenys Vlasenko
Upstream commit: Date: Thu, 27 May 2010 11:32:55 +0800 [VAR] Fix poplocalvar on abnormal exit from function The new localvar code broke the abnormal exit from functions and built-ins by not restoring the original localvar state. This patch fixes this by storing the previous localvar state so that we always unwind correctly in case of an abnormal exit. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Replace cmdenviron with localvarsDenys Vlasenko
Upstream commit: Date: Wed, 26 May 2010 18:54:19 +0800 [VAR] Replace cmdenviron with localvars This patch replaces the cmdenviron mechanism for temporary command variables with the localvars mechanism used by functions. This reduces code size, and more importantly, makes the variable assignment take effect immediately as required by POSIX. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Fix poplocalvar leakDenys Vlasenko
Upstream commit: Date: Tue, 25 May 2010 18:14:32 +0800 [VAR] Fix poplocalvar leak When a variable is marked as local, we set VSTRFIXED on its vp recored. However, poplocalvar never clears this flag for variables that were unset to begin with. Thus if you ever made an unset variable local, it would get the VSTRFIXED bit and stick around forever. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: [VAR] Add localvars nestingDenys Vlasenko
Upstream commit: Date: Mon, 24 May 2010 15:31:27 +0800 [VAR] Add localvars nesting This patch adds localvars nesting infrastructure so we can reuse the localvars mechanism for command evaluation. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: alloc slightly smaller buffer in cvtnum(); faster unsetvar()Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26ash: fix redir_leak.tests if STANDALONE=yDenys Vlasenko
If STANDALONE and we run a NOEXEC applet, saved copies of redirected fds were visible for the child. They have CLOEXEC bit, yes, but we do not exec in this case. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26shell: remove ${#+} tests, it is not a valid constructDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26hush: fix ${##}, ${#?}, ${#!} handlingDenys Vlasenko
function old new delta parse_dollar 786 820 +34 expand_one_var 1579 1592 +13 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 47/0) Total: 47 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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>
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