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2017-08-05sysctl: make it NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05sysctl: recognize ";comment" and "<whitespace>#comment" linesDenys Vlasenko
function old new delta config_read 639 699 +60 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05libbb: make trim() return pointer to terminating NULDenys Vlasenko
function old new delta trim 80 90 +10 angle_address 56 50 -6 sysctl_main 282 273 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/3 up/down: +10/-15) Total: -5 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05sysctl: fix file parsing, do not require -w for VAR=VALDenys Vlasenko
function old new delta sysctl_act_on_setting - 451 +451 sysctl_main 222 282 +60 packed_usage 31744 31793 +49 config_read 604 639 +35 sysctl_act_recursive 612 163 -449 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/1 up/down: 595/-449) Total: 146 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05cryptpw, mkpasswd: make them NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05chvt, deallocvt, dumpkmap, fgconsole, loadkmap: make them NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05pivot_root: make it NOFORKDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05partprobe: make it NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05sv, svc: make them NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05svc: fix a case where with more than option, getopt() state is not resetDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-05blockdev, fsfreeze, fstrim, mountpoint: make NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04libbb: use _exit, not exit, in bb_daemonize_or_rexec()Denys Vlasenko
By the time we reach exit in parent, child already exited or execed. We should not re-run libc cleanup code. While at it, introduce bb_daemon_helper() and add a few comments. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04stty: make in NOEXECDenys Vlasenko
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>
2017-08-04mesg: make in NOFORKDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04pmap: tweak help text, show usage if no params are givenDenys Vlasenko
Noticed while auditing nofork/noexec status function old new delta pmap_main 70 80 +10 packed_usage 31747 31744 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04runlevel: make it NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04mktemp: make it NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04chat: trim help textDenys Vlasenko
Noticed while auditing nofork/noexec status function old new delta packed_usage 31777 31747 -30 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04getopt32: move support for "always treat first arg as option" to users (tar/ar)Denys Vlasenko
Now getopt() never leaks (and never performs) any xmalloc's. function old new delta ar_main 522 556 +34 tar_main 986 1014 +28 getopt32 1458 1350 -108 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 62/-108) Total: -46 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04getopt32: factor out code to treat all args as optionsDenys Vlasenko
Working towards making getopt32() xmalloc-free function old new delta make_all_argv_opts - 58 +58 top_main 914 912 -2 getopt32 1517 1458 -59 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 0/2 up/down: 58/-61) Total: -3 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04tweak NOFORK_NOEXEC.lstDenys Vlasenko
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>
2017-08-04modutils: make them NOEXEC except depmodDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-04microcom: require exactly one non-optionDenys 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>
2017-08-03getopt: make it NOEXECDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-03new NOFORKs: pwdx,kill[all5],ttysize,realpath,readlink NOEXECs: date,resizeDenys Vlasenko
function old new delta run_nofork_applet 258 280 +22 readlink_main 112 123 +11 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 33/0) Total: 33 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-03config: FEDORA_COMPAT option (so far only tweaks uname)Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-03new NOFORKs: clear, nproc, tty, uname, arch, unlink, whichDenys Vlasenko
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>
2017-08-02config: do not use `a' quoting in help textsDenys 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>
2017-07-31test: fix 4-argument caseDenys Vlasenko
Upstream dash commit: Date: Sun, 13 Jul 2008 19:20:10 +0800 Fixed 3,4-argument cases for test per POSIX ----- Forwarded message from Gerrit Pape <pape@smarden.org> ----- Subject: Bug#455828: dash: 4-argument test "test \( ! -e \)" yields an error Date: Fri, 28 Dec 2007 08:53:29 +0000 From: Gerrit Pape <pape@smarden.org> To: Vincent Lefevre <vincent@vinc17.org>, 455828@bugs.debian.org On Thu, Dec 27, 2007 at 06:23:20PM +0100, Vincent Lefevre wrote: > On 2007-12-27 16:00:06 +0000, Gerrit Pape wrote: > > On Wed, Dec 12, 2007 at 02:18:47AM +0100, Vincent Lefevre wrote: > > > According to POSIX[*], "test \( ! -e \)" is a 4-argument test and is > > > here equivalent to "test ! -e". But dash (like ksh93 and bash) yields > > > an error: > > > > > > $ test \( ! -e \) || echo $? > > > test: 1: closing paren expected > > > 2 > > > $ test ! -e || echo $? > > > 1 > > > > Hi Vincent, > > > > the -e switch to test takes an argument, a pathname. > > According to POSIX, in both above examples, "-e" is *not* a switch, > just a string. > > test \( ! -e \) > > means: return true if the string "-e" is empty, otherwhise return false. > The error in dash is that it incorrectly thinks that "-e" is a switch in > this context. I see, you're right. Thanks, Gerrit. ----- End forwarded message ----- This patch hard-codes the 3,4-argument cases in the way required by POSIX. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta test_main 370 421 +51 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>
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