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88e3706474
Capability checking for thread_control, exregs, mutex, cap_control,
ipc, and map system calls.
The visualised model is implemented in code that compiles, but
actual functionality hasn't been tested.
Need to add:
- Dynamic assignment of initial resources matching with what's
defined in the configuration.
- A paged-thread-group, since that would be a logical group of
seperation from a capability point-of-view.
- Resource ids for various tasks. E.g.
- Memory capabilities don't have target resources.
- Thread capability assumes current container for THREAD_CREATE.
- Mutex syscall assumes current thread (this one may not need
any changing)
- cap_control syscall assumes current thread. It may happen to
be that another thread's capability list is manipulated.
Last but not least:
- A simple and easy-to-use userspace library for dynamic expansion
of resource domains as new resources are created such as threads.