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2017-05-22ash,hush: fix SIGCHLD interrupting read builtinDenys Vlasenko
function old new delta readcmd 169 217 +48 shell_builtin_read 1087 1097 +10 localcmd 366 364 -2 builtin_read 197 193 -4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/2 up/down: 58/-6) Total: 52 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-04-17Spelling fixes in comments, documentation, tests and examplesDenys Vlasenko
By klemens <ka7@github.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-29*: add comment about APPLET_ODDNAME formatDenys Vlasenko
It confused me more than once Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-11hush: reinstate [[ builtinDenys Vlasenko
Mike deleted it: commit 39456a18a104b228de240b265bd943251219849d Author: Mike Frysinger <vapier@gentoo.org> Date: Sat Mar 28 12:21:57 2009 +0000 stop lying about [[ test support probably because it was not properly ifdefed around, and was enabled even when bash compat is off. I just tested it - it works: $ [ *.diff = z.diff ]; echo $? 0 $ [[ *.diff = z.diff ]]; echo $? 1 Of course, not all numerous bash tricks of [[ ]] are implemented... function old new delta bltins2 60 72 +12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-11hush: split bash compatible extensions into separate defines. No code changesKang-Che Sung
Splitting these options makes it self-documenting about what bash-compatible features we have. Signed-off-by: Kang-Che Sung <explorer09@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10hush: shorten output of "help" builtinDenys Vlasenko
text data bss dec hex filename 891272 485 6856 898613 db635 busybox_old 891232 485 6856 898573 db60d busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10hush: reorder builtins (cd and pwd ought to be close, etc), no code changesDenys Vlasenko
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>
2017-01-10Big cleanup in config help and descriptionDenys Vlasenko
Redundant help texts (one which only repeats the description) are deleted. Descriptions and help texts are trimmed. Some config options are moved, even across menus. No config option _names_ are changed. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: make echo builtin optionalDenys Vlasenko
It's a bit overkill (who would want it off?) but ash already has it configurable. Let's be symmetric. Also tweak kbuild logic to use ASH_BUILTIN_ECHO to select echo.o, not ASH. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: fix a bug in argv restoration after sourcing a fileDenys Vlasenko
if sourced file "shift"ed argvs so that $1 is NULL, restore wasn't done. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: global_args_malloced is used only if set builtin is enabledDenys Vlasenko
function old new delta run_pipe 1623 1635 +12 builtin_source 210 222 +12 save_and_replace_G_args 70 60 -10 builtin_shift 132 94 -38 restore_G_args 98 - -98 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 2/2 up/down: 24/-146) Total: -122 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: fix 'defined but not used' warningDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: remove redundand test for ENABLE_HUSH_JOBDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09hush: fix kill builtin without jobs supportDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-09typo fixDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: conditionalize print_escaped() on EXPORT || TRAPDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: make memleak builtin optionalDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: make export builtin optionalDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: make umask builtin optionalDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: make set/unset builtins optionalDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: make read and trap builtins optionalDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: kill builtin and kill %jobspec supportDenys Vlasenko
Also made it and printf, type and wait builtins optional. function old new delta builtin_kill - 323 +323 bltins1 336 348 +12 builtin_type 114 116 +2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/0 up/down: 337/0) Total: 337 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-08hush: support %%, %+ and % jobspec (meaning "current job")Denys Vlasenko
function old new delta parse_jobspec 83 133 +50 builtin_wait 278 283 +5 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-03hush: correct exitcode for unterminated ')' - exitcode2.tests testcaseDenys Vlasenko
function old new delta parse_stream 2595 2609 +14 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-12-23Make it possible to select "sh" and "bash" aliases without selecting ash or hushDenys Vlasenko
The same can be done for msh, but we are probably better off just deleting it in a next versio or two. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-12-22shell: move "config" blocks above their use in coditional includesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-12-12shell: suppress "unused var/func" warnings on some configsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-25ash,hush: make ^C in interactive mode visually much closer to bash behaviorDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-24ash,hush: ^C from command line should set $? to 128+SIGINTDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: make getch/peek functions directly calledDenys Vlasenko
Indirect calls are more difficult to predict. Unfortunately, on x64 direct call is 5 bytes while indirect "call (reg+ofs)" is 3 bytes: function old new delta i_getch - 82 +82 i_peek - 63 +63 parse_stream 2531 2579 +48 parse_dollar 771 797 +26 parse_redirect 296 321 +25 add_till_closing_bracket 408 420 +12 encode_string 256 265 +9 i_peek_and_eat_bkslash_nl 93 99 +6 add_till_backquote 110 114 +4 parse_and_run_stream 139 141 +2 expand_vars_to_list 1143 1144 +1 static_peek 6 - -6 setup_string_in_str 39 18 -21 setup_file_in_str 40 19 -21 static_get 27 - -27 file_peek 52 - -52 file_get 65 - -65 ------------------------------------------------------------------------------ (add/remove: 2/4 grow/shrink: 9/2 up/down: 278/-192) Total: 86 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: renumber PIPE_foo, make PIPE_SEQ = 0Denys Vlasenko
PIPE_SEQ is used most often, having it zero makes code smaller: function old new delta done_word 719 707 -12 parse_stream 2546 2531 -15 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: small optimization in run_listDenys Vlasenko
I thought gcc can detect this itself. It doesn't. function old new delta run_list 1030 1021 -9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: deindent large block of code, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: simplify insert_bg_jobsDenys Vlasenko
function old new delta insert_bg_job 366 281 -85 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: make "wait %1" less likely to play with signal maskDenys Vlasenko
Was playing with "sleep 3 | exit 3 & wait %1" and noticed that often SIGCHLD arrives even before I get to signal masking. Can avoid it in this case. function old new delta wait_for_child_or_signal 228 265 +37 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-08hush: rework "wait %jobspec" to work in non-interactive shells tooDenys Vlasenko
Also add tests. wait5.tests so far fails (but works for ash and dash). function old new delta builtin_wait 305 283 -22 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-07hush: "wait $!; echo $?" should return 127 if $! already exitedDenys Vlasenko
It would be nice to provide bash-like "remember las exitcode" thingy, but it's a bit complex. For now, match ash and dash. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-07hush: implement "wait %jobspec"Denys Vlasenko
function old new delta parse_jobspec - 83 +83 job_exited_or_stopped - 79 +79 builtin_wait 236 302 +66 wait_for_child_or_signal 199 228 +29 checkjobs 142 158 +16 builtin_jobs 59 68 +9 process_wait_result 453 408 -45 builtin_fg_bg 272 203 -69 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 4/2 up/down: 282/-114) Total: 168 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-07hush: factor out %jobspec parsingDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-07hush: comment fixDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-07hush: do not allow sh -c '{ echo boo }'Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-04hush: case logic for setting $? was still wrongDenys Vlasenko
Resetting to 0 should happen in "esac". Matched branch must still see previous $?. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-04hush: non-matching "case" statement sets $? to 0Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-11-04hush: allow { cmd } to not be terminated by semicolon in some casesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-28hush: fix "(sleep 1; exit 3) & sleep 2; echo $?; wait $!; echo $?"Denys Vlasenko
"wait $!" may be just a bit too late: backgrounded $! is gone. Do not bomb out in this case. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-28hush: fix "wait PID"Denys Vlasenko
It was not properly interruptible, and did not update job status (the exited processes were still thought of as running). function old new delta process_wait_result - 453 +453 wait_for_child_or_signal - 199 +199 run_list 996 1002 +6 checkjobs_and_fg_shell 41 43 +2 builtin_wait 328 215 -113 checkjobs 516 142 -374 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 2/2 up/down: 660/-487) Total: 173 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-27ash: [SHELL] Expand ENV before using itDenys Vlasenko
Upstream commit: Date: Sun, 13 Jul 2008 21:51:52 +0800 [SHELL] Expand ENV before using it Per POSIX ENV needs to undergo parameter expansion. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-25ash,hush: set exit code 127 in "sh /does/not/exist" caseDenys Vlasenko
Upstream commit 1 for ash: [ERROR] Allow the originator of EXERROR to set the exit status Some errors have exit status values specified by POSIX and it is therefore desirable to be able to set the exit status at the EXERROR source rather than in main.c. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Upstream commit 2 for ash: [INPUT] Use exit status 127 when the script to run does not exist This commit makes dash exit with return code 127 instead of 2 if started as non-interactive shell with a non-existent command_file specified as argument (or a directory), as documented in http://www.opengroup.org/onlinepubs/009695399/utilities/sh.html#tag_04_128_14 The wrong exit code was reported by Clint Adams and Jari Aalto through http://bugs.debian.org/548743 http://bugs.debian.org/548687 Signed-off-by: Gerrit Pape <pape@smarden.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> NB: in fact, http://bugs.debian.org/548687 was not fixed by this: "sh /dir/" thinks that EISDIR error on read is EOF, and exits 0. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-03hush: add commented-out debug printouts in "memleak" built-inDenys Vlasenko
Allocation addresses of malloc() are jittery, thought I had a mem leak in hush, but it was malloc variability. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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