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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.
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/*
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* Syscall offsets in the syscall page.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#ifndef __SYSCALL_H__
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#define __SYSCALL_H__
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#include INC_GLUE(syscall.h)
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#include INC_API(exregs.h)
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#include <l4/generic/time.h>
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#define syscall_offset_mask 0xFF
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#define sys_ipc_offset 0x0
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#define sys_thread_switch_offset 0x4
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#define sys_thread_control_offset 0x8
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#define sys_exchange_registers_offset 0xC
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#define sys_schedule_offset 0x10
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#define sys_unmap_offset 0x14
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#define sys_space_control_offset 0x18
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#define sys_ipc_control_offset 0x1C
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#define sys_map_offset 0x20
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#define sys_getid_offset 0x24
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#define sys_capability_control_offset 0x28
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#define sys_container_control_offset 0x2C
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#define sys_time_offset 0x30
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#define sys_mutex_control_offset 0x34
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#define syscalls_end_offset sys_mutex_control_offset
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#define SYSCALLS_TOTAL ((syscalls_end_offset >> 2) + 1)
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void print_syscall_context(struct ktcb *t);
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int sys_ipc(l4id_t to, l4id_t from, unsigned int flags);
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int sys_thread_switch(void);
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int sys_thread_control(unsigned int flags, struct task_ids *ids);
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int sys_exchange_registers(struct exregs_data *exregs, l4id_t tid);
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int sys_schedule(void);
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int sys_unmap(unsigned long virtual, unsigned long npages, unsigned int tid);
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int sys_space_control(void);
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int sys_ipc_control(void);
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int sys_map(unsigned long phys, unsigned long virt, unsigned long npages,
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unsigned int flags, l4id_t tid);
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int sys_getid(struct task_ids *ids);
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int sys_capability_control(unsigned int req, unsigned int flags, void *addr);
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int sys_container_control(unsigned int req, unsigned int flags, void *addr);
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int sys_time(struct timeval *tv, int set);
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int sys_mutex_control(unsigned long mutex_address, int mutex_op);
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#endif /* __SYSCALL_H__ */
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