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2018-07-18hush: smaller code to set o_string to ""Denys Vlasenko
function old new delta encode_then_expand_vararg 399 398 -1 parse_stream 2753 2748 -5 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-17whitespace fixesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-17hush: faster/smaller code to check for presense of multiple chars in stringDenys Vlasenko
Go over the string only once. function old new delta encode_then_expand_string 126 105 -21 encode_then_expand_vararg 443 399 -44 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-65) Total: -65 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-17hush: improve ${var#...}, ${var:+...} and ${var/.../...} - handle quotingDenys Vlasenko
dollar_altvalue1 test partially fails: word splitting of unquoted ${var:+...} is not correct function old new delta encode_then_expand_vararg - 443 +443 expand_one_var 1599 1610 +11 parse_stream 2756 2753 -3 encode_string 250 242 -8 setup_heredoc 308 298 -10 expand_and_evaluate_arith 106 96 -10 encode_then_expand_string 142 126 -16 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/5 up/down: 454/-47) Total: 407 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-15hush: shrink code in builtin_evalDenys Vlasenko
function old new delta builtin_eval 126 119 -7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26hush: unset_local_var_len is only used by unset_local_varDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26hush: fix compile problem found by randomconfigDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26hush: fix dup_CLOEXEC() call without "avoid_fd" parameterDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26hush: fix for !ENABLE_HUSH_MODE_X configurationDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26hush: variable nesting code is used also if HUSH_FUNCTIONS is not enabledDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-26randomconfig fixesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-06-06restore documentation on the build config languageKartik Agaram
Kconfig-language.txt was deleted in commit 4fa499a17b52b back in 2006. Move to docs/ as suggested by Xabier Oneca: http://lists.busybox.net/pipermail/busybox/2014-May/080914.html Also update references to it everywhere. Signed-off-by: Kartik Agaram <akkartik@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-14ash: expand: Fix buffer overflow in expandmetaDenys Vlasenko
Upstream commit: Date: Sun, 25 Mar 2018 16:38:00 +0800 expand: Fix buffer overflow in expandmeta The native version of expandmeta allocates a buffer that may be overrun for two reasons. First of all the size is 1 byte too small but this is normally hidden because the minimum size is rounded up to 2048 bytes. Secondly, if the directory level is deep enough, any buffer can be overrun. This patch fixes both problems by calling realloc when necessary. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta expmeta 517 635 +118 expandarg 990 996 +6 mklocal 288 290 +2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 126/0) Total: 126 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11shell: add 6856 $IFS tests to testsuitesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: fix recent breakage from parse_stream() changesDenys Vlasenko
function old new delta parse_stream 3808 3821 +13 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: fix IFS handling in readDenys Vlasenko
$ echo "X:Y:" | (IFS=": " read x y; echo "|$x|$y|") |X|Y| $ echo "X:Y : " | (IFS=": " read x y; echo "|$x|$y|") |X|Y| function old new delta shell_builtin_read 1320 1426 +106 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: IFS fixesDenys Vlasenko
$ IFS=": "; x=" "; set x $x; for v; do echo "|$v|"; done |x| $ IFS=": "; x=":"; set x $x; for v; do echo "|$v|"; done |x| || function old new delta run_pipe 1789 1870 +81 expand_on_ifs 310 361 +51 pseudo_exec_argv 588 591 +3 builtin_local 50 53 +3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 138/0) Total: 138 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: fix "$v" expansion in case patterns when v='[a]'Denys Vlasenko
function old new delta run_list 1053 1063 +10 setup_redirects 311 320 +9 encode_then_expand_string 135 142 +7 run_pipe 1784 1789 +5 expand_assignments 81 86 +5 expand_string_to_string 124 125 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 6/0 up/down: 37/0) Total: 37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11ash: parser: Allow newlines within parameter substitutionDenys Vlasenko
Upstream commit: Date: Thu, 22 Mar 2018 21:41:24 +0800 parser: Allow newlines within parameter substitution On Fri, Mar 16, 2018 at 11:27:22AM +0800, Herbert Xu wrote: > On Thu, Mar 15, 2018 at 10:49:15PM +0100, Harald van Dijk wrote: > > > > Okay, it can be trivially modified to something that does work in other > > shells (even if it were actually executed), but gets rejected at parse time > > by dash: > > > > if false; then > > : ${$+ > > } > > fi > > That's just a bug in dash's parser with ${} in general, because > it bombs out without the if clause too: > > : ${$+ > } This patch fixes the parsing of newlines with parameter substitution. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: optimize parse_stream()Denys Vlasenko
Since we check for '\' anyway when we determine whether we can look ahead, we can just check for *and handle* it there. function old new delta parse_stream 2751 2740 -11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-11hush: do not drop backslash from eval 'echo ok\'Denys Vlasenko
newer bash does not drop it, most other shells too function old new delta unbackslash 39 57 +18 parse_stream 2753 2751 -2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 18/-2) Total: 16 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10shell: add comments about [[, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: fix handling of \<eof> in double-quoted stringsDenys Vlasenko
function old new delta encode_string 268 250 -18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: fix eval 'echo ok\'Denys Vlasenko
function old new delta parse_stream 2762 2753 -9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: simplify \<newline> code, part 3Denys Vlasenko
function old new delta parse_stream 2780 2762 -18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: simplify \<newline> code, part 2Denys Vlasenko
function old new delta parse_stream 2787 2780 -7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: simplify \<newline> code, part 1Denys Vlasenko
function old new delta parse_stream 2919 2787 -132 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10hush: put "current word" structure into parsing contextDenys Vlasenko
function old new delta done_word 790 767 -23 parse_stream 3018 2919 -99 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-122) Total: -122 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10ash: if "[[" bashism is not supported, do not handle it anywhereDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-10ash: trivial code shrinkDenys Vlasenko
function old new delta parse_command 1677 1674 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-09hush: fix var_leaks.tests and var_preserved.tests on NOMMUDenys Vlasenko
function old new delta remove_nested_vars - 77 +77 run_pipe 1756 1786 +30 pseudo_exec_argv 376 379 +3 leave_var_nest_level 98 32 -66 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/1 up/down: 110/-66) Total: 44 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-09hush: fix func_return2.tests on NOMMUDenys Vlasenko
function old new delta hush_main 1714 1718 +4 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-08bzip2: fix two crashes on corrupted archivesDenys Vlasenko
As it turns out, longjmp'ing into freed stack is not healthy... function old new delta unpack_usage_messages - 97 +97 unpack_bz2_stream 369 409 +40 get_next_block 1667 1677 +10 get_bits 156 155 -1 start_bunzip 212 183 -29 bb_show_usage 181 120 -61 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/3 up/down: 147/-91) Total: 56 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-08libbb.h: always include sys/resource.hDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-07hush: fix prompt in multi-line $(())Denys Vlasenko
Now shows PS2 in this case: /path/to/dir $ a=b; echo $(( > _ Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-06hush: fix "unset PS1/PS2", and put them into initial variable setDenys Vlasenko
"unset PS1/PS2" causes prompts to be empty strings function old new delta hush_main 1031 1089 +58 goto_new_line 27 33 +6 fgetc_interactive 244 245 +1 unset_local_var 155 149 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 65/-6) Total: 59 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-06hush: if we did match "LINENO" or "OPTIND", stop further comparisonsDenys Vlasenko
function old new delta handle_changed_special_names 99 101 +2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-06hush: consolidate handling of setting/unsetting of PSn, LINENO, OPTINDDenys Vlasenko
function old new delta handle_changed_special_names - 99 +99 unset_local_var 256 155 -101 set_local_var 557 437 -120 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 99/-221) Total: -122 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: update to correctly handle changed var_bash[346].testsDenys Vlasenko
function old new delta expand_one_var 1612 1604 -8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: implement "hush -s"Denys Vlasenko
function old new delta hush_main 1015 1031 +16 packed_usage 32757 32745 -12 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 16/-12) Total: 4 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix a few more corner cases with empty-expanding `cmds`Denys Vlasenko
See added testcases function old new delta run_pipe 1723 1784 +61 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix corner cases with exec in empty expansionsDenys Vlasenko
Cases like these: var=val exec >redir var=val `` >redir function old new delta run_pipe 1701 1723 +22 redirect_and_varexp_helper 56 55 -1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 22/-1) Total: 21 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: less mind-bending set_vars_and_save_old()Denys Vlasenko
function old new delta run_pipe 1651 1701 +50 set_local_var 510 557 +47 pseudo_exec_argv 544 581 +37 redirect_and_varexp_helper 64 56 -8 set_vars_and_save_old 164 149 -15 unset_local_var 274 256 -18 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/3 up/down: 134/-41) Total: 93 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: "no logic changes" in last commit was not true, fix it upDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: make run_pipe code simpler to understand, no logic changesDenys Vlasenko
function old new delta run_pipe 1641 1651 +10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-05hush: fix a bug where we don't properly handle f() { a=A; b=B; }; a= fDenys Vlasenko
function old new delta unset_local_var 20 274 +254 leave_var_nest_level - 98 +98 set_vars_and_save_old 128 164 +36 enter_var_nest_level - 32 +32 builtin_local 46 50 +4 pseudo_exec_argv 554 544 -10 redirect_and_varexp_helper 77 64 -13 run_pipe 1890 1641 -249 unset_local_var_len 267 - -267 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 3/3 up/down: 424/-539) Total: -115 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-04hush: make var nesting code independent of "local" supportDenys Vlasenko
Also, add code to abort at ~65000 function recursion depth. SEGVing is not as nice as exiting with a message (and restoring termios!): $ f() { echo -n .; f; }; f ....<many dots later>....hush: fatal recursion (depth 65281) function old new delta run_pipe 1826 1890 +64 pseudo_exec_argv 544 554 +10 parse_and_run_file 71 80 +9 i_getch 104 107 +3 done_command 99 102 +3 set_local_var 508 510 +2 helper_export_local 214 215 +1 builtin_local 49 46 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/1 up/down: 92/-3) Total: 89 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-04hush: fix for readonly vars in "ro=A ro=B cmd" caseDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-04ash: unbreak PS1 parsing after "ash: parser: Add syntax stack..." commitDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-04-03hush: support "f() (cmd)" functionsDenys Vlasenko
Many other shells support this construct function old new delta parse_stream 2950 3018 +68 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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