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2018-07-31hush: speed up ${var:+ARG} for literal ARGsDenys Vlasenko
function old new delta first_special_char_in_vararg - 52 +52 expand_one_var 2248 2296 +48 encode_then_expand_vararg 357 336 -21 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 100/-21) Total: 79 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-28hush: fix another case where empty "for" wasn't setting exitcode to 0Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-28hush: disable debug_indent increment/decrement for HUSH_DEBUG < 2 buildsDenys Vlasenko
function old new delta run_list 1063 1046 -17 parse_stream 2296 2249 -47 run_pipe 1890 1840 -50 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-114) Total: -114 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-28hush: make "set -x" output don't redirectable when fd#2 redirectedDenys Vlasenko
function old new delta x_mode_print_optionally_squoted - 120 +120 x_mode_flush - 68 +68 save_fd_on_redirect 208 243 +35 x_mode_prefix - 27 +27 x_mode_addblock - 23 +23 x_mode_addchr - 17 +17 dump_cmd_in_x_mode 110 85 -25 run_pipe 1919 1890 -29 print_optionally_squoted 145 - -145 ------------------------------------------------------------------------------ (add/remove: 5/1 grow/shrink: 1/2 up/down: 290/-199) Total: 91 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-27hush: make "set -x" output closer to bashDenys Vlasenko
function old new delta print_optionally_squoted - 145 +145 run_pipe 1902 1919 +17 dump_cmd_in_x_mode 142 110 -32 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 162/-32) Total: 130 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-27hush: fix "set -x" output prefix overlapping for v="..`cmd`.." caseDenys Vlasenko
Was printing initial "+" prefix for the assignment, that printing "+ cmd" then printing the expanded " v=VAL" string. Delay printing of "+" prefix for the assignment to after expansion. function old new delta run_pipe 1883 1902 +19 builtin_eval 127 133 +6 expand_vars_to_list 1103 1106 +3 dump_cmd_in_x_mode 144 142 -2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 28/-2) Total: 26 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-27hush: in some cases, expand_on_ifs() relied of uninitialized memoryDenys Vlasenko
The n > 0 check to prevent access to the last byte of non-existing argv[-1] wasn't enough. Switched to making sure there are initialized (zero) bytes there. A predictable testcase is rather hard to construct, unfortunately, contents of memory depends on allocator behavior and whatnot. function old new delta o_save_ptr_helper 119 137 +18 expand_on_ifs 345 339 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 18/-6) Total: 12 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-26hush: improve set -x: make "+++" indent level increase in `cmd` and eval.Denys Vlasenko
function old new delta dump_cmd_in_x_mode 126 144 +18 run_pipe 1873 1883 +10 builtin_eval 119 127 +8 expand_vars_to_list 1100 1103 +3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 39/0) Total: 39 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-24hush: fix/explain corner cases of redirection colliding with script fdDenys Vlasenko
function old new delta save_fd_on_redirect 200 208 +8 run_pipe 1870 1873 +3 setup_redirects 321 322 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 12/0) Total: 12 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-24hush: add "heredoc.tests" from ash, tweak ash "is a function" messageDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-24hush: fix nested redirects colliding with script fdsDenys Vlasenko
This necessitates switch from libc FILE api to a simple homegrown replacement. The change which fixes the bug here is the deleting of restore_redirected_FILEs(); line. It was prematurely moving (restoring) script fd#3. The fix is: we don't even _want_ to restore scrit fds, we are perfectly fine with them being moved. The only reason we tried to restore them is that FILE api did not allow moving of FILE->fd. function old new delta refill_HFILE_and_getc - 93 +93 hfopen - 90 +90 hfclose - 66 +66 pseudo_exec_argv 591 597 +6 hush_main 1089 1095 +6 builtin_source 209 214 +5 save_fd_on_redirect 197 200 +3 setup_redirects 320 321 +1 fgetc_interactive 235 236 +1 i_peek_and_eat_bkslash_nl 99 97 -2 expand_vars_to_list 1103 1100 -3 restore_redirects 99 52 -47 fclose_and_forget 57 - -57 remember_FILE 63 - -63 ------------------------------------------------------------------------------ (add/remove: 3/2 grow/shrink: 6/3 up/down: 271/-172) Total: 99 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-24hush: handle backslash-newline in heredoc terminatorsDenys Vlasenko
function old new delta fetch_heredocs 479 527 +48 (ash fails this test) Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-24hush: fix handling of heredocs not enclosed in groups where they are "declared"Denys Vlasenko
function old new delta fetch_heredocs - 479 +479 parse_and_run_stream 146 148 +2 parse_stream 2787 2296 -491 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 481/-491) Total: -10 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-23hush: fix heredoc handling in the "cmd <<EOF ;<newline>" caseDenys Vlasenko
function old new delta parse_stream 2759 2787 +28 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-23hush: fix handling of heredocs starting with empty linesDenys Vlasenko
function old new delta parse_stream 2748 2759 +11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: never glob result of dquoted "${v:+/bin/c*}"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: tidy up code after previous commitsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: better names for o_free_unsafe() / o_free(), no logic changesDenys Vlasenko
o_free() made o_string NULL-initialized, o_free_unsafe() did not bother reinitializing (expected caller to not need it). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: fix handling of '' in ${var:+ARG}Denys Vlasenko
This wasn't an ash bug in dollar_altvalue9, it was hush bug (and bash!) function old new delta expand_one_var 2236 2254 +18 expand_vars_to_list 1097 1103 +6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 24/0) Total: 24 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: fix word splitting in ${v:+ARG} - dollar_altvalue1 testDenys Vlasenko
ash might be a bit buggy, need to investigate dollar_altvalue9 test function old new delta expand_one_var 1639 2236 +597 expand_variables 112 128 +16 expand_vars_to_list 1117 1097 -20 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 613/-20) Total: 593 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: expand_vars_to_list() should not assume it starts new wordDenys Vlasenko
function old new delta expand_variables 112 115 +3 expand_vars_to_list 1117 1108 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 3/-9) Total: -6 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: remove pointless "next" var, simplify expand_vars_to_list()Denys Vlasenko
function old new delta o_addstr - 26 +26 expand_vars_to_list 1112 1117 +5 encode_then_expand_vararg 398 382 -16 parse_dollar 779 762 -17 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/2 up/down: 31/-33) Total: -2 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: store "ended_in_ifs" flag in o_stringDenys Vlasenko
This simplifies function parameter passing. function old new delta expand_one_var 1643 1639 -4 append_str_maybe_ifs_split 64 52 -12 expand_vars_to_list 1125 1112 -13 expand_on_ifs 361 345 -16 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-45) Total: -45 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: propagate (output,n) parameters into expand_one_var()Denys Vlasenko
This is necessary since expand_one_var() for ${var:+ARG} must create more than one output word, and thus can't simply return a char*. function old new delta expand_one_var 1610 1643 +33 expand_vars_to_list 1139 1125 -14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 33/-14) Total: 19 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20hush: make expand_vars_to_list() a bit more saneDenys Vlasenko
function old new delta append_str_maybe_ifs_split - 64 +64 expand_vars_to_list 1167 1139 -28 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 64/-28) Total: 36 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-18hush: reduce indentation, no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-18hush: fix 'x=; echo ${x:-"$@"}' producing 'BUG in varexp2' messageDenys Vlasenko
function old new delta expand_string_to_string 126 128 +2 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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>
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