Hi,
Writing to get your input on a problem I just ran into.
I am in the process of porting all the apps/*.c to target
in order to get the whole 'openssl' program running
on OSE RTOS on a powerpc.
The problem is that the programs use global variables
and does not bother to clear them and the simple
shell I am using on the RTOS does NOT clear
the data before a program runs. Hence after one
run of an openssl program, the variables have
the same value as the last time the program ran... ack :(
Pick 'req' as an example:
static LHASH *req_conf=NULL; /* global */
now in the 'req' function context:
<<<snip>>
req_conf=CONF_load(NULL,template,&errline);
<<<snip>>>
if ((req_conf != NULL) && (req_conf != config)) CONF_free(req_conf);
Now lets say I run req to create a new key. The req_conf first gets
loaded
(hence non-NULL) and then in the end of the function it gets free'd. Now
imagine the next time I type: 'openssl req ?' to see the params. This
time
req_conf does not get loaded but in the end of the function it gets
free'd
a second time since still non-NULL. Ouch :(
So my question is. Do you want a huge patch for all the apps that
properly
restores statically initialized global data and clears global bss data
after
a run and/or will you enter that patch if you get it?
Or alternatively, maybe I can play with the linker and see what I can
do to cook up a function that clears only the openssl BSS. Will be
trickier to restore the initializes openssl data though, mm.
Any comments? And no, I can't make the rtos shell reinit programs
when restarted :( It is a big lump of statically linked code that
never exits...
/Lennart Bang
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