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Fixed minor issues on capability list sharing.

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This commit is contained in:
Bahadir Balban
2009-12-13 18:02:47 +02:00
parent 8fe15ba811
commit c7069a8e8e
9 changed files with 86 additions and 22 deletions
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10
include/l4/generic/capability.h
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@@ -55,7 +55,12 @@ static inline void cap_list_remove(struct capability *cap,
static inline struct capability *
cap_list_detach(struct cap_list *clist)
{
struct link *list = list_detach(&clist->caps);
struct link *list;
if (!clist->ncaps)
return 0;
list = list_detach(&clist->caps);
clist->ncaps = 0;
return link_to_struct(list, struct capability, list);
}
@@ -75,6 +80,9 @@ static inline void cap_list_attach(struct capability *cap,
static inline void cap_list_move(struct cap_list *to,
struct cap_list *from)
{
if (!from->ncaps)
return;
struct capability *cap_head = cap_list_detach(from);
cap_list_attach(cap_head, to);
}