checkpointing page

[Dave Aitel <dave () immunitysec com>]

Quite useful for things like finding good return addresses across an
entire address space...(without simulating)

"""
This page describes a system for checkpointing and restarting UNIX
processes. It differs from some existing implementations in that (a) It
does not require the executables to be linked with library, so processes
can be checkpointed without change and more interestingly, (b) the
manner in which a checkpointed process is restarted. Other systems
<http://www.geocities.com/asimshankar/checkpointing/?200528#others>
(such as ckpt and esky) have a complex mechanism of restoring the stack
and register state of the checkpointed process as both are also used by
the restoration code. This system seems to be simpler as the restarted
process and the restoration code are in independent address spaces. The
system runs only on user-level code and requires no modifications to the
kernel.
"""

http://www.geocities.com/asimshankar/checkpointing/

-dave


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