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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.
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* Exchange registers system call data.
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*
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* Copyright (C) 2008 Bahadir Balban
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*/
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#ifndef __EXREGS_H__
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#define __EXREGS_H__
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#include <l4/macros.h>
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#include INC_GLUE(syscall.h)
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#include INC_GLUE(context.h)
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#include <l4/types.h>
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#define EXREGS_SET_PAGER 1
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#define EXREGS_SET_UTCB 2
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#define EXREGS_VALID_REGULAR_REGS \
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(FIELD_TO_BIT(exregs_context_t, r0) | \
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FIELD_TO_BIT(exregs_context_t, r1) | \
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FIELD_TO_BIT(exregs_context_t, r2) | \
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FIELD_TO_BIT(exregs_context_t, r3) | \
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FIELD_TO_BIT(exregs_context_t, r4) | \
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FIELD_TO_BIT(exregs_context_t, r5) | \
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FIELD_TO_BIT(exregs_context_t, r6) | \
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FIELD_TO_BIT(exregs_context_t, r7) | \
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FIELD_TO_BIT(exregs_context_t, r8) | \
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FIELD_TO_BIT(exregs_context_t, r9) | \
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FIELD_TO_BIT(exregs_context_t, r10) | \
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FIELD_TO_BIT(exregs_context_t, r11) | \
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FIELD_TO_BIT(exregs_context_t, r12) | \
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FIELD_TO_BIT(exregs_context_t, lr)) \
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#define EXREGS_VALID_SP \
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FIELD_TO_BIT(exregs_context_t, sp) \
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#define EXREGS_VALID_PC \
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FIELD_TO_BIT(exregs_context_t, pc) \
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/* Structure passed by userspace pagers for exchanging registers */
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struct exregs_data {
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exregs_context_t context;
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u32 valid_vect;
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u32 flags;
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l4id_t pagerid;
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unsigned long utcb_address;
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};
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#endif /* __EXREGS_H__ */
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