68 struct user_namespace {  struct
72 	struct user_namespace	*parent;  argument
109 	struct user_namespace *ns;  argument
116 extern struct user_namespace init_user_ns;
119 bool setup_userns_sysctls(struct user_namespace *ns);
120 void retire_userns_sysctls(struct user_namespace *ns);
121 struct ucounts *inc_ucount(struct user_namespace *ns, kuid_t uid, enum ucount_type type);
123 struct ucounts *alloc_ucounts(struct user_namespace *ns, kuid_t uid);
138 static inline long get_userns_rlimit_max(struct user_namespace *ns, enum rlimit_type type)  in get_userns_rlimit_max()
143 static inline void set_userns_rlimit_max(struct user_namespace *ns,  in set_userns_rlimit_max()
151 static inline struct user_namespace *get_user_ns(struct user_namespace *ns)  in get_user_ns()
160 extern void __put_user_ns(struct user_namespace *ns);
162 static inline void put_user_ns(struct user_namespace *ns)  in put_user_ns()
177 extern bool userns_may_setgroups(const struct user_namespace *ns);
178 extern bool in_userns(const struct user_namespace *ancestor,
179 		       const struct user_namespace *child);
180 extern bool current_in_userns(const struct user_namespace *target_ns);
184 static inline struct user_namespace *get_user_ns(struct user_namespace *ns)  in get_user_ns()
202 static inline void put_user_ns(struct user_namespace *ns)  in put_user_ns()
206 static inline bool userns_may_setgroups(const struct user_namespace *ns)  in userns_may_setgroups()
211 static inline bool in_userns(const struct user_namespace *ancestor,  in in_userns()
212 			     const struct user_namespace *child)  in in_userns()
217 static inline bool current_in_userns(const struct user_namespace *target_ns)  in current_in_userns()