2007-04-14 20:38:41 +05:30
|
|
|
Various bits of what is known about busybox shells, in no particular order.
|
|
|
|
|
|
2007-05-04 18:37:27 +05:30
|
|
|
2007-05-03
|
|
|
|
|
hush: new bug spotted: Ctrl-C on "while true; do true; done" kills shell,
|
|
|
|
|
not just the loop.
|
|
|
|
|
|
2007-05-04 04:15:39 +05:30
|
|
|
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.
|
|
|
|
|
|
2007-04-29 04:09:02 +05:30
|
|
|
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).
|
|
|
|
|
|
2007-04-22 04:57:30 +05:30
|
|
|
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 19:12:52 +05:30
|
|
|
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
|
2007-04-21 15:31:14 +05:30
|
|
|
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 05:33:36 +05:30
|
|
|
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 20:38:41 +05:30
|
|
|
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)
|
