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(by Valdimir) function old new delta config_open2 - 41 +41 config_read 507 542 +35 find_pair 169 187 +18 fopen_for_write - 14 +14 fopen_for_read - 14 +14 find_main 406 418 +12 xfopen_for_write - 10 +10 xfopen_for_read - 10 +10 popstring 134 140 +6 parse_inittab 396 401 +5 next_token 923 928 +5 pack_gzip 1659 1661 +2 bb__parsespent 117 119 +2 fallbackSort 1719 1717 -2 evalvar 1376 1374 -2 qrealloc 36 33 -3 ... ... ... ... singlemount 4579 4569 -10 process_stdin 443 433 -10 patch_main 1111 1101 -10 ifupdown_main 2175 2165 -10 file_action_grep 90 80 -10 uuidcache_init 649 637 -12 hush_main 797 785 -12 read_config 230 217 -13 dpkg_main 3835 3820 -15 read_line_input 3134 3110 -24 sysctl_main 232 203 -29 config_open 40 10 -30 WARN_BAD_LINE 44 - -44 login_main 1714 1575 -139 ------------------------------------------------------------------------------ (add/remove: 5/1 grow/shrink: 8/74 up/down: 174/-737) Total: -563 bytes |
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.. | ||
ash_test | ||
hush_test | ||
msh_test | ||
ash_doc.txt | ||
ash_ptr_hack.c | ||
ash.c | ||
bbsh.c | ||
Config.in | ||
cttyhack.c | ||
hush_doc.txt | ||
hush_leaktool.sh | ||
hush.c | ||
Kbuild | ||
lash_unused.c | ||
msh_function.patch | ||
msh.c | ||
README | ||
README.job | ||
susv3_doc.tar.bz2 |
Various bits of what is known about busybox shells, in no particular order. 2008-02-14 ash: does not restore tty pgrp if killed by HUP. Symptom: Midnight Commander is backgrounded if you started ash under it, and then killed it with HUP. 2007-11-23 hush: fixed bogus glob handling; fixed exec <"$1"; added test and echo builtins 2007-06-13 hush: exec <"$1" doesn't do parameter subst 2007-05-24 hush: environment-related memory leak plugged, with net code size decrease. 2007-05-24 hush: '( echo ${name )' will show syntax error message, but prompt doesn't return (need to press <enter>). Pressing Ctrl-C, <enter>, '( echo ${name )' again, Ctrl-C segfaults. 2007-05-21 hush: environment cannot be handled by libc routines as they are leaky (by API design and thus unfixable): hush will leak memory in this script, bash does not: pid=$$ while true; do unset t; t=111111111111111111111111111111111111111111111111111111111111111111111111 export t ps -o vsz,pid,comm | grep " $pid " done The fix is to not use setenv/putenv/unsetenv but manipulate env ourself. TODO. hush: meanwhile, first three command subst bugs mentioned below are fixed. :) 2007-05-06 hush: more bugs spotted. Comparison with bash: bash-3.2# echo "TEST`date;echo;echo`BEST" TESTSun May 6 09:21:05 CEST 2007BEST [we dont strip eols] bash-3.2# echo "TEST`echo '$(echo ZZ)'`BEST" TEST$(echo ZZ)BEST [we execute inner echo] bash-3.2# echo "TEST`echo "'"`BEST" TEST'BEST [we totally mess up this one] bash-3.2# echo `sleep 5` [Ctrl-C should work, Ctrl-Z should do nothing][we totally mess up this one] bash-3.2# if true; then > [Ctrl-C] bash-3.2# [we re-issue "> "] bash-3.2# if echo `sleep 5`; then > true; fi [we execute sleep before "> "] 2007-05-04 hush: made ctrl-Z/C work correctly for "while true; do true; done" (namely, it backgrounds/interrupts entire "while") 2007-05-03 hush: new bug spotted: Ctrl-C on "while true; do true; done" doesn't work right: # while true; do true; done [1] 0 true <-- pressing Ctrl-C several times... [2] 0 true [3] 0 true Segmentation fault 2007-05-03 hush: update on "sleep 1 | exit 3; echo $?" bug. parse_stream_outer() repeatedly calls parse_stream(). parse_stream() is now fixed to stop on ';' in this example, fixing it (parse_stream_outer() will call parse_stream() 1st time, execute the parse tree, call parse_stream() 2nd time and execute the tree). But it's not the end of story. In more complex situations we _must_ parse way farther before executing. Example #2: "{ sleep 1 | exit 3; echo $?; ...few_lines... } >file". Because of redirection, we cannot execute 1st pipe before we parse it all. We probably need to learn to store $var expressions in parse tree. Debug printing of parse tree would be nice too. 2007-04-28 hush: Ctrl-C and Ctrl-Z for single NOFORK commands are working. Memory and other resource leaks (opendir) are not addressed (testcase is "rm -i" interrupted by ctrl-c). 2007-04-21 hush: "sleep 5 | sleep 6" + Ctrl-Z + fg seems to work. "rm -i" + Ctrl-C, "sleep 5" + Ctrl-Z still doesn't work for SH_STANDALONE case :( 2007-04-21 hush: fixed non-backgrounding of "sleep 1 &" and totally broken "sleep 1 | sleep 2 &". Noticed a bug where successive jobs get numbers 1,2,3 even when job #1 has exited before job# 2 is started. (bash reuses #1 in this case) 2007-04-21 hush: "sleep 1 | exit 3; echo $?" prints 0 because $? is substituted _before_ pipe gets executed!! run_list_real() already has "pipe;echo" parsed and handed to it for execution, so it sees "pipe"; "echo 0". 2007-04-21 hush: removed setsid() and made job control sort-of-sometimes-work. Ctrl-C in "rm -i" works now except for SH_STANDALONE case. "sleep 1 | exit 3" + "echo $?" works, "sleep 1 | exit 3; echo $?" shows exitcode 0 (should be 3). "sleep 1 | sleep 2 &" fails horribly. 2007-04-14 lash, hush: both do setsid() and as a result don't have ctty! Ctrl-C doesn't work for any child (try rm -i), etc... lash: bare ">file" doesn't create a file (hush works)