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19b4c6c4c1
Userspace often breaks as we change the capability structure. Now structure is under api/ so userspace can also update with changes.
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*
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* Capability-related management.
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*
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* Copyright (C) 2009 Bahadir Balban
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*/
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#ifndef __LIBL4_CAPABILITY_H__
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#define __LIBL4_CAPABILITY_H__
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#include <l4lib/types.h>
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#include <l4/lib/list.h>
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#include <l4/api/capability.h>
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struct cap_list {
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int ncaps;
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struct link caps;
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};
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static inline void cap_list_init(struct cap_list *clist)
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{
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clist->ncaps = 0;
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link_init(&clist->caps);
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}
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static inline void cap_list_insert(struct capability *cap,
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struct cap_list *clist)
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{
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list_insert(&cap->list, &clist->caps);
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clist->ncaps++;
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}
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/* Detach a whole list of capabilities from list head */
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static inline struct capability *
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cap_list_detach(struct cap_list *clist)
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{
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struct link *list = list_detach(&clist->caps);
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clist->ncaps = 0;
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return link_to_struct(list, struct capability, list);
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}
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/* Attach a whole list of capabilities to list head */
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static inline void cap_list_attach(struct capability *cap,
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struct cap_list *clist)
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{
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/* Attach as if cap is the list and clist is the element */
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list_insert(&clist->caps, &cap->list);
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/* Count the number of caps attached */
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list_foreach_struct(cap, &clist->caps, list)
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clist->ncaps++;
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}
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static inline void cap_list_move(struct cap_list *to,
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struct cap_list *from)
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{
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struct capability *cap_head = cap_list_detach(from);
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cap_list_attach(cap_head, to);
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}
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#endif /* __LIBL4_CAPABILITY_H__ */
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