Ali Polatel wrote:
Kostik Belousov yazmış:
On Mon, May 10, 2010 at 07:48:47PM +0300, Ali Polatel wrote:
Another question is how hard is it to implement PL_EVENT_EXEC?
This could be useful for truss as it updates the execution type of the
process after successful execve() calls afaict.
Is this needed ? The question is not rhetorical, I am trying to
understand what prevents use of PT_TO_SCE and checking the syscall
number ? You would screen for SYS_execve or SYS_fexecve and
reset the debugger state on SIGTRAP that is supplied to the debugger
before first instruction of new image is executed.
Not really needed, just cleaner imo. As system call numbers may be
different for different execution types and you need to look it up from
a table using a string as argument which is slow.
I agree that this would be cleaner. Having worked on the ptrace/procfs
stuff in other tools like strace and truss, exec truly is an important
event to a debugger aside from just being another system call as it
signals that the address space has been changed.
--
John Baldwin
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