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restore: add mount id-s in the ns_ids list (v4)

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Currently ns_ids list is filled only on dump. Soon we'll need this
list for mount namespaces on restore, e.g. to know which tasks share
the namespaces.

v2: merge the patch "namespace: add a function to search an ns_id
item by id" into this one.
v3: add prefix rst_ to add_ns_id
v4: look up namespace by two values -- type AND ID

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2014-04-21 18:23:14 +04:00
committed by Pavel Emelyanov
parent 0989d3fdf9
commit eac462922c
3 changed files with 47 additions and 0 deletions
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include/namespaces.h
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@@ -42,6 +42,9 @@ extern int switch_ns(int pid, struct ns_desc *nd, int *rst);
extern int restore_ns(int rst, struct ns_desc *nd);
extern int dump_task_ns_ids(struct pstree_item *);
extern int rst_add_ns_id(unsigned int id, pid_t pid, struct ns_desc *nd);
extern struct ns_id *lookup_ns_by_id(unsigned int id, struct ns_desc *nd);
extern int gen_predump_ns_mask(void);
#endif /* __CR_NS_H__ */