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pre-dump: Collect mount info, root and nsmask

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Well, we want to pre-dump files (fsnotifies), for that we
will need mountinfo-s and root, and for the latter -- the
current ns mask.

The problem with current ns mask is that its generation is
incorporated into ns IDs generation and dumping. And since
the ids dumping is not performed on pre-dump, let's just
provide a helper for ns-mask generation.

Strictly speaking, the whole ns-mask idea is not great, but
it's to be fixed later.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov
2014-01-30 13:48:00 +04:00
parent c18c733b7c
commit 84ebc64b1f
3 changed files with 38 additions and 0 deletions
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include/namespaces.h
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@@ -33,5 +33,6 @@ 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 gen_predump_ns_mask(void);
#endif /* __CR_NS_H__ */