I want to be able to capture the I/O calls of an application and then
ship them back over the network to be handled by another machine.
There are plenty of examples of this in the system already; they're
called
"network filesystems". One of them is even called "the Network File
System".
It also seems like Apple could keep the system call interface stable
between versions - the great thing about system calls is if you
need to
change the meaning of one, you can just create another system call
with
a different name. You can leave the old one stable, and just change
the
framework to call the new one - if someone has found a way to call the
actual system call, the can keep using it.
This is a naive assumption. It is much easier to version at the shared
library interface; locking down the system call layer introduces a
lot of
problems, especially if you guarantee the interface as ABI.
= Mike
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