64b56afd8c
Specifically, what this capability manager does, is map keywords to calculated bitmasks. These bitmasks are allocated at runtime, so that the any managed capability index can be manipulated by modules. Modules should call capability_orphan() when orphaning capabilities. This makes it so that bitmasks aren't reallocated, except for cases where the capability is the same.
35 lines
1.5 KiB
C
35 lines
1.5 KiB
C
/*
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* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __CAPABILITY_H__
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#define __CAPABILITY_H__
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struct CapabilityIndex;
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struct CapabilityEntry;
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extern unsigned int capability_get(struct CapabilityIndex *index, const char *cap);
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extern unsigned int capability_put(struct CapabilityIndex *index, const char *cap);
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extern void capability_orphan(struct CapabilityIndex *index, const char *cap);
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extern struct CapabilityIndex *capability_index_create(void);
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extern void capability_index_destroy(struct CapabilityIndex *);
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#endif
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