Daniel Jacobowitz wrote:
> Have you got an example that needs this?
No, I was just suggesting an approach that may work, in case
somebody wants to fix this. SIGSTOP/CONT doesn't seem like a
very popular communication mechanism anyway.
I did notice that two processes trying to ptrace each other
end up being unkillably deadlocked on 2.4.18, which a fix
for the SIGSTOP problem may resolve, but I didn't check if
this still happens in more recent kernels. ("Don't do it" is
a satisfactory work-around.)
I'll worry about such subtleties once I've made heads and
tails of how UML's ptrace-relay interacts with process
termination :-)
- Werner
-- _________________________________________________________________________ / Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net / /_http://www.almesberger.net/____________________________________________/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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