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* hush: fix G.argv0_for_re_execing to avoid endless loopHajime Tazaki2024-12-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | When the busybox is used as /sbin/init and the inittab file contains below: ::respawn:-/bin/sh /sbin/init spawns hush for the first time with the argv[0] contains '-', and hush treats it as login shell. Then it reads /etc/profile and if the file contains the command execution like below, it invokes hush as login shell because the argv[0] argument is still '-/bin/sh' and reads /etc/profile again. This will last until some failure (e.g., memory failure) happens. [ "$(id -u)" -eq 0 ] && PS1="${PS1}# " || PS1="${PS1}\$ " This commit fixes this issues by adding an offset (+1) to the G.argv0_for_re_execing variable. This issue happens on our out-of-tree UML (use mode linux) with nommu configuration. Link: https://lore.kernel.org/all/cover.1731290567.git.thehajime@gmail.com/ Signed-off-by: Hajime Tazaki <thehajime@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* libbb: modify find_executable() to not temporarily write to PATHDenys Vlasenko2024-10-081-21/+14
| | | | | | | | | | | | | This allows to simplify "which" applet code function old new delta find_executable 93 111 +18 which_main 191 177 -14 builtin_source 316 294 -22 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 18/-36) Total: -18 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix "type ./cat" and "command -v ./cat" to not scan PATHDenys Vlasenko2024-10-071-13/+33
| | | | | | | | | | | | function old new delta find_executable_in_PATH - 67 +67 if_command_vV_print_and_exit 114 116 +2 .rodata 105712 105710 -2 builtin_type 137 128 -9 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/2 up/down: 69/-11) Total: 58 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: make "test -x" use cached groupinfoDenys Vlasenko2024-10-071-7/+22
| | | | | | | | | | | | | | | | While at it, correct "type" to skip non-executable files in PATH function old new delta builtin_source 211 316 +105 builtin_test 10 32 +22 hush_main 1150 1170 +20 builtin_type 122 137 +15 if_command_vV_print_and_exit 120 114 -6 find_in_path 131 - -131 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 4/1 up/down: 162/-137) Total: 25 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: cache more of uid/gid syscallsDenys Vlasenko2024-10-071-4/+5
| | | | | | | | | | | | | | | | | | | Testcase: setuidgid 1:1 strace ash -c 'test -x TODO; test -x TODO; echo $?' should show that second "test -x" does not query ids again. function old new delta ash_main 1236 1256 +20 get_cached_euid - 19 +19 get_cached_egid - 19 +19 test_main 56 72 +16 test_exec 119 135 +16 is_in_supplementary_groups 52 57 +5 nexpr 718 702 -16 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 4/1 up/down: 95/-16) Total: 79 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: make "test -x" use cached groupinfoDenys Vlasenko2024-10-071-2/+1
| | | | | | | | | | | function old new delta test_main2 - 407 +407 testcmd 10 23 +13 test_main 418 56 -362 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 420/-362) Total: 58 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* libbb: simplify parameter passing in is_in_supplementary_groups()Denys Vlasenko2024-10-071-5/+3
| | | | | | | | | | | function old new delta is_in_supplementary_groups 54 52 -2 nexpr 721 718 -3 test_exec 125 119 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-11) Total: -11 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: command -v CMD must skip (go to next path) when CMD exists, but is not ↵Denys Vlasenko2024-10-071-3/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | executable Upstream commit: Date: Fri, 5 Apr 2024 17:55:46 +0800 exec: Check executable bit when searching path Andrej Shadura <andrew.shadura@collabora.co.uk> wrote: ... > https://bugs.debian.org/874264 > -------- Forwarded Message -------- > Subject: dash: 'command -v' mistakenly returns a shell script whose > executable is not set > Date: Mon, 04 Sep 2017 10:45:48 -0400 > From: Norman Ramsey <nr@cs.tufts.edu> > To: Debian Bug Tracking System <submit@bugs.debian.org> ... > I tracked a build bug in s-nail to a problem with dash. Symptom: > building s-nail tries to run /home/nr/bin/clang, a script whose > executable bit is not set. We tracked the problem to the result of > running `command -v clang` with /bin/sh: ... This is inherited from NetBSD. There is even a commented-out block of code that tried to fix this. Anyway, we now have faccessat so we can simply use it. function old new delta test_exec - 125 +125 find_command 911 918 +7 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/0 up/down: 132/0) Total: 132 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: whitespace and comment fixesDenys Vlasenko2024-09-281-43/+27
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: reject unknown long optionsRon Yorston2024-09-271-1/+2
| | | | | | | | | | | | | | | | Commit 64f70cc755 (Add --login support) added code in options() to handle the bash-compatible '--login' option. In doing so it committed BusyBox ash to silently accepting all other long options. Restore compatibility with other ash variants by rejecting unknown long options. function old new delta options 589 624 +35 Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: move hashvar() calls into findvar()Ron Yorston2024-07-141-9/+8
| | | | | | | | | | | | | | | | | | | dash has accepted a patch to remove the first argument of findvar(). It's commit e85e972 (var: move hashvar() calls into findvar()). Apply the same change to BusyBox ash. function old new delta findvar 35 40 +5 mklocal 268 261 -7 exportcmd 164 157 -7 setvareq 319 310 -9 lookupvar 150 141 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/4 up/down: 5/-32) Total: -27 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: do not exit interactive shell on some redirection errorsDenys Vlasenko2024-07-137-18/+47
| | | | | | | | | | | | | | | | | | | | $ echo >&99 hush: dup2(99,1): Bad file descriptor $ echo >&9999 hush: fcntl(1,F_DUPFD,10000): Invalid argument $ echo 2>/dev/tty 10>&9999 hush: fcntl(10,F_DUPFD,10000): Invalid argument $ still alive!_ function old new delta static.setup_redirects 334 394 +60 .rodata 105661 105712 +51 dup_CLOEXEC 49 79 +30 save_fd_on_redirect 263 277 +14 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 155/0) Total: 155 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix "exec 3>FILE" aborting if 3 is exactly the next free fdDenys Vlasenko2024-07-138-7/+42
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: avoid duplicate fcntl(F_SETFD, FD_CLOEXEC) during initDenys Vlasenko2024-07-131-8/+3
| | | | | | | function old new delta hush_main 1149 1150 +1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: remove limitation on fd# lengthDenys Vlasenko2024-07-121-7/+13
| | | | | | | | | | | | | | | | "echo text >&0000000000002" works as you would expect, "echo text >&9999999999" properly fails instead of creating a file named "9999999999". function old new delta expredir 219 232 +13 readtoken1 3045 3053 +8 parsefname 204 201 -3 isdigit_str9 45 - -45 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 2/1 up/down: 21/-48) Total: -27 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: do not abort interactive mode on >&9999 redirectDenys Vlasenko2024-07-121-4/+16
| | | | | | | | | | | | | | | | | | | | | With very large fd#, the error code path is different from one for closed but small fd#. Make it not abort if we are interactive: $ echo text >&99 # this wasn't buggy ash: dup2(9,1): Bad file descriptor $ echo text >&9999 # this was ash: fcntl(1,F_DUPFD,10000): Invalid argument function old new delta .rodata 105637 105661 +24 dup2_or_raise 35 38 +3 redirect 1084 1044 -40 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 27/-40) Total: -13 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: remove defunct control character to save a few bytesRon Yorston2024-07-101-12/+12
| | | | | | | | | | | | | | | | | Commit 549deab5a (ash: move parse-time quote flag detection to run-time) did away with the need to distinguish between backquotes inside and outside quotes. This left a gap among the control characters used in argument strings. Removing this gap saves a few bytes. function old new delta .rodata 167346 167338 -8 cmdputs 399 388 -11 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-19) Total: -19 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: fix parsing of alias expansion + bash featuresRon Yorston2024-07-101-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An alias expansion immediately followed by '<' and a newline is parsed incorrectly: ~ $ alias x='echo yo' ~ $ x< yo ~ $ sh: syntax error: unexpected newline The echo is executed and an error is printed on the next command submission. In dash the echo isn't executed and the error is reported immediately: $ alias x='echo yo' $ x< dash: 3: Syntax error: newline unexpected $ The difference between BusyBox and dash is that BusyBox supports bash-style process substitution and output redirection. These require checking for '<(', '>(' and '&>' in readtoken1(). In the case above, when the end of the alias is found, the '<' and the following newline are both read to check for '<('. Since there's no match both characters are pushed back. The next input is obtained by reading the expansion of the alias. Once this string is exhausted the next call to __pgetc() calls preadbuffer() which pops the string, reverts to the previous input and recursively calls __pgetc(). This request is satisified from the pungetc buffer. But the first __pgetc() doesn't know this: it sees the character has come from preadbuffer() so it (incorrectly) updates the pungetc buffer. Resolve the issue by moving the code to pop the string and fetch the next character up from preadbuffer() into __pgetc(). function old new delta pgetc 28 589 +561 __pgetc 607 - -607 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/0 up/down: 561/-607) Total: -46 bytes Signed-off-by: Ron Yorston <rmy@pobox.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: fix handling of single-quoted strings in pattern substitutionDenys Vlasenko2024-02-265-0/+29
| | | | | | | function old new delta subevalvar 1576 1588 +12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: detect when terminating "done"/"fi" is missingDenys Vlasenko2024-02-259-1/+22
| | | | | | | | | | function old new delta parse_stream 2271 2292 +21 .rodata 105408 105427 +19 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 40/0) Total: 40 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: set G.ifs sooner (prevents segfault)Denys Vlasenko2024-02-251-28/+34
| | | | | | | | | | | function old new delta set_G_ifs - 151 +151 run_list 1024 1031 +7 run_pipe 1567 1445 -122 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 158/-122) Total: 36 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* sleep: fix "sleep -- ARGS"Denys Vlasenko2023-10-021-8/+0
| | | | | | | | | | | function old new delta sleep_main 116 119 +3 printf_main 860 837 -23 single_argv 50 25 -25 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 3/-48) Total: -45 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: initialize basepf.buf in ashzhuyan2023-08-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When I planned to print the command in read_line_input, I found that after the system started, the command printed for the first time was always garbled. After analysis, it is found that in the init() function of ash, the variable basepf.buf is not initialized after applying for memory, resulting in garbled initial data. Then assign it to the global variable g_parsefile->buf in ash.c, and then pass g_parsefile->buf to the parameter command of the function read_line_input in the function preadfd(), and finally cause it to be garbled when the command is printed by read_line_input. The call stack is as follows: #0 read_line_input (st=0xb6fff220, prompt=0xb6ffc910 "\\[\\033[32m\\]\\h \\w\\[\\033[m\\] \\$ ", command=command@entry=0xb6ffc230 "P\325\377\266P\325\377\266", maxsize=maxsize@entry=1024) at libbb/lineedit.c:2461 #1 0x0043ef8c in preadfd () at shell/ash.c:10812 #2 preadbuffer () at shell/ash.c:10914 #3 pgetc () at shell/ash.c:10997 #4 0x00440c20 in pgetc_eatbnl () at shell/ash.c:11039 #5 0x00440cbc in xxreadtoken () at shell/ash.c:13157 #6 0x00440f40 in readtoken () at shell/ash.c:13268 #7 0x00441234 in list (nlflag=nlflag@entry=1) at shell/ash.c:11782 #8 0x004420e8 in parsecmd (interact=<optimized out>) at shell/ash.c:13344 #9 0x00442c34 in cmdloop (top=top@entry=1) at shell/ash.c:13549 #10 0x00444e4c in ash_main (argc=<optimized out>, argv=0x444e4c <ash_main+1328>) at shell/ash.c:14747 #11 0x00407954 in run_applet_no_and_exit (applet_no=9, name=<optimized out>, argv=0xbefffd34) at libbb/appletlib.c:1024 #12 0x00407b68 in run_applet_and_exit (name=0xbefffe56 "ash", argv=0x9) at libbb/appletlib.c:1047 #13 0x00407f88 in main (argc=<optimized out>, argv=0xbefffd34) at libbb/appletlib.c:1181 Fixes: 82dd14a510ca ("ash: use CONFIG_FEATURE_EDITING_MAX_LEN") Signed-off-by: zhuyan <zhuyan34@huawei.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Update applet size estimatesDenys Vlasenko2023-07-103-3/+3
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: tweak comments, no code changesDenys Vlasenko2023-07-101-6/+7
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: remove "volatile" specifier from suppress_intDenys Vlasenko2023-07-101-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta aliascmd 274 278 +4 signal_handler 81 80 -1 static.redirectsafe 144 141 -3 unwindlocalvars 219 215 -4 trapcmd 333 329 -4 setvar 164 160 -4 setpwd 167 163 -4 setinputfile 216 212 -4 setcmd 76 72 -4 readcmd 221 217 -4 raise_exception 26 22 -4 out2str 37 33 -4 out1str 32 28 -4 freejob 89 85 -4 forkchild 616 612 -4 fg_bgcmd 298 294 -4 expandarg 949 945 -4 evaltree 753 749 -4 evalsubshell 173 169 -4 evalpipe 346 342 -4 evalfun 408 404 -4 cdcmd 699 695 -4 ash_main 1240 1236 -4 __pgetc 589 585 -4 unaliascmd 152 147 -5 unalias 51 46 -5 umaskcmd 253 248 -5 stalloc 97 92 -5 shiftcmd 144 139 -5 setinputstring 73 68 -5 redirect 1068 1063 -5 recordregion 81 76 -5 pushstring 160 155 -5 popstring 120 115 -5 popstackmark 69 64 -5 popredir 123 118 -5 popfile 110 105 -5 out1fmt 45 40 -5 newline_and_flush 39 34 -5 ifsfree 66 61 -5 growstackblock 146 141 -5 freestrings 95 90 -5 fmtstr 59 54 -5 flush_stdout_stderr 23 18 -5 dowait 577 572 -5 delete_cmd_entry 52 47 -5 clearcmdentry 98 93 -5 ash_arith 79 74 -5 argstr 1404 1399 -5 evalcommand 1523 1515 -8 removerecordregions 219 209 -10 mklocal 284 274 -10 find_command 893 883 -10 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/52 up/down: 4/-251) Total: -247 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: disable sleep as builtin, closes 15619Denys Vlasenko2023-07-101-5/+17
| | | | | | | | | | | | | | Has a few annoying problems: * sleepcmd() -> sleep_main(), the parsing of bad arguments exits the shell. * sleep_for_duration() in sleep_main() has to be interruptible for ^C traps to work, which may be a problem for other users of sleep_for_duration(). * BUT, if sleep_for_duration() is interruptible, then SIGCHLD interrupts it as well (try "/bin/sleep 1 & sleep 10"). * sleep_main() must not allocate anything as ^C in ash longjmp's. (currently, allocations are only on error paths, in message printing). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: fix a compile failureDenys Vlasenko2023-07-081-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* ash: disable check for "good" function name, bash does not check thisDenys Vlasenko2023-07-043-11/+17
| | | | | | | | | | function old new delta .rodata 105304 105261 -43 parse_command 1696 1633 -63 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-106) Total: -106 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* hush: quote values in "readonly" outputDenys Vlasenko2023-07-031-4/+11
| | | | | | | | | | | function old new delta builtin_readonly 61 107 +46 builtin_export 140 145 +5 .rodata 105321 105304 -17 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 51/-17) Total: 34 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: avoid $((3**999999999999999999)) to take yearsDenys Vlasenko2023-07-021-3/+14
| | | | | | | function old new delta arith_apply 991 1030 +39 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: do not accept $((36#@))Denys Vlasenko2023-07-021-16/+22
| | | | | | | | | | function old new delta parse_with_base 170 174 +4 arith_apply 996 991 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-5) Total: -1 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: code shrinkDenys Vlasenko2023-06-301-4/+7
| | | | | | | | | | function old new delta arith_apply 999 996 -3 evaluate_string 1295 1291 -4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-7) Total: -7 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: code shrinkDenys Vlasenko2023-06-291-11/+13
| | | | | | | function old new delta arith_apply 1023 996 -27 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: code shrinkDenys Vlasenko2023-06-281-8/+10
| | | | | | | | | | | function old new delta arith_apply 1015 1023 +8 evaluate_string 1309 1295 -14 .rodata 105344 105321 -23 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 8/-37) Total: -29 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: improve commentsDenys Vlasenko2023-06-261-2/+4
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: rename TOK_NUM to TOK_VALUE, improve commentsDenys Vlasenko2023-06-261-24/+25
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: bash-compatible handling of too large numbersDenys Vlasenko2023-06-259-44/+118
| | | | | | | | | | function old new delta parse_with_base - 170 +170 evaluate_string 1477 1309 -168 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/1 up/down: 170/-168) Total: 2 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: disable debug againDenys Vlasenko2023-06-191-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: $((1?)) has one-too-small opstack, fix thisDenys Vlasenko2023-06-191-1/+2
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: fix comments about jammed-together num+num corner casesDenys Vlasenko2023-06-191-8/+16
| | | | | | | function old new delta evaluate_string 1478 1470 -8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: add note on ERANGEDenys Vlasenko2023-06-181-4/+11
| | | | | | | function old new delta evaluate_string 1488 1478 -10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: explain why we use separate &endDenys Vlasenko2023-06-181-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: code shrinkDenys Vlasenko2023-06-181-2/+5
| | | | | | | function old new delta evaluate_string 1498 1491 -7 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: eliminate redundant endofname()Denys Vlasenko2023-06-181-8/+8
| | | | | | | function old new delta evaluate_string 1486 1498 +12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell: typo fix in testsDenys Vlasenko2023-06-182-2/+2
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: code shrinkDenys Vlasenko2023-06-181-11/+12
| | | | | | | function old new delta evaluate_string 1489 1486 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: decrease stack usage by not allocating copies of variable namesDenys Vlasenko2023-06-181-32/+51
| | | | | | | | | | | | We risk exhaust stack with alloca() with old code. function old new delta arith_apply 990 1023 +33 evaluate_string 1467 1494 +27 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 60/0) Total: 60 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell/math: decrease stack usageDenys Vlasenko2023-06-181-35/+27
| | | | | | | function old new delta evaluate_string 1412 1467 +55 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* shell: move varcmp() to shell_common.h and use it in hushDenys Vlasenko2023-06-174-50/+37
| | | | | | | | | | | | | | | | | | | function old new delta unset_local_var - 112 +112 findvar 31 35 +4 set_vars_and_save_old 144 141 -3 helper_export_local 235 230 -5 set_local_var 425 416 -9 handle_changed_special_names 38 27 -11 builtin_unset 154 141 -13 builtin_getopts 404 391 -13 get_local_var_value 281 260 -21 get_ptr_to_local_var 71 45 -26 unset_local_var_len 139 - -139 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 1/8 up/down: 116/-240) Total: -124 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-16 17:18:55 +0000