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b24c8eb89d
Implemented a protocol between a client and its pager to request and get a capability to ipc to another client of the pager. Pager first ensures the request is valid from its client. It then tries to use a greater capability that it possesses, to produce a new capability that the client requested. Once the kernel validates the correct one and replicates/reduces it to client's need, it grants it to the client.
33 lines
889 B
C
33 lines
889 B
C
/*
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* Syscall API for capability manipulation
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*
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* Copyright (C) 2009 Bahadir Balban
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*/
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#ifndef __API_CAPABILITY_H__
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#define __API_CAPABILITY_H__
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/* Capability syscall request types */
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#define CAP_CONTROL_NCAPS 0x00000000
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#define CAP_CONTROL_READ 0x00000001
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#define CAP_CONTROL_SHARE 0x00000002
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#define CAP_CONTROL_GRANT 0x00000003
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#define CAP_CONTROL_REPLICATE 0x00000005
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#define CAP_CONTROL_SPLIT 0x00000006
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#define CAP_CONTROL_DEDUCE 0x00000007
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#define CAP_CONTROL_DESTROY 0x00000008
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#define CAP_SHARE_MASK 0x00000003
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#define CAP_SHARE_SINGLE 0x00000001
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#define CAP_SHARE_ALL 0x00000002
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#define CAP_GRANT_MASK 0x0000000F
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#define CAP_GRANT_SINGLE 0x00000001
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#define CAP_GRANT_ALL 0x00000002
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#define CAP_GRANT_IMMUTABLE 0x00000004
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/* Task's primary capability list */
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#define TASK_CAP_LIST(task) \
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(&((task)->space->cap_list))
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#endif /* __API_CAPABILITY_H__ */
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