| 1 |
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| 2 | #ifndef _LINUX_CGROUP_NAMESPACE_H
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| 3 | #define _LINUX_CGROUP_NAMESPACE_H
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| 4 |
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| 5 | #include <linux/ns_common.h>
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| 6 |
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| 7 | struct cgroup_namespace {
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| 8 | struct ns_common ns;
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| 9 | struct user_namespace *user_ns;
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| 10 | struct ucounts *ucounts;
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| 11 | struct css_set *root_cset;
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| 12 | };
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| 13 |
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| 14 | extern struct cgroup_namespace init_cgroup_ns;
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| 15 |
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| 16 | #ifdef CONFIG_CGROUPS
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| 17 |
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| 18 | static inline struct cgroup_namespace *to_cg_ns(struct ns_common *ns)
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| 19 | {
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| 20 | return container_of(ns, struct cgroup_namespace, ns);
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| 21 | }
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| 22 |
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| 23 | void free_cgroup_ns(struct cgroup_namespace *ns);
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| 24 |
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| 25 | struct cgroup_namespace *copy_cgroup_ns(u64 flags,
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| 26 | struct user_namespace *user_ns,
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| 27 | struct cgroup_namespace *old_ns);
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| 28 |
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| 29 | int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen,
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| 30 | struct cgroup_namespace *ns);
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| 31 |
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| 32 | static inline void get_cgroup_ns(struct cgroup_namespace *ns)
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| 33 | {
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| 34 | ns_ref_inc(ns);
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| 35 | }
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| 36 |
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| 37 | static inline void put_cgroup_ns(struct cgroup_namespace *ns)
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| 38 | {
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| 39 | if (ns_ref_put(ns))
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| 40 | free_cgroup_ns(ns);
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| 41 | }
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| 42 |
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| 43 | #else
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| 44 |
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| 45 | static inline void free_cgroup_ns(struct cgroup_namespace *ns) { }
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| 46 | static inline struct cgroup_namespace *
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| 47 | copy_cgroup_ns(u64 flags, struct user_namespace *user_ns,
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| 48 | struct cgroup_namespace *old_ns)
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| 49 | {
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| 50 | return old_ns;
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| 51 | }
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| 52 |
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| 53 | static inline void get_cgroup_ns(struct cgroup_namespace *ns) { }
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| 54 | static inline void put_cgroup_ns(struct cgroup_namespace *ns) { }
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| 55 |
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| 56 | #endif
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| 57 |
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| 58 | #endif
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