76 struct user_namespace {  struct
80 	struct user_namespace	*parent;  argument
121 	struct user_namespace *ns;  argument
129 extern struct user_namespace init_user_ns;
132 bool setup_userns_sysctls(struct user_namespace *ns);
133 void retire_userns_sysctls(struct user_namespace *ns);
134 struct ucounts *inc_ucount(struct user_namespace *ns, kuid_t uid, enum ucount_type type);
136 struct ucounts *alloc_ucounts(struct user_namespace *ns, kuid_t uid);
158 static inline long get_userns_rlimit_max(struct user_namespace *ns, enum rlimit_type type)  in get_userns_rlimit_max()
163 static inline void set_userns_rlimit_max(struct user_namespace *ns,  in set_userns_rlimit_max()
171 static inline struct user_namespace *get_user_ns(struct user_namespace *ns)  in get_user_ns()
180 extern void __put_user_ns(struct user_namespace *ns);
182 static inline void put_user_ns(struct user_namespace *ns)  in put_user_ns()
197 extern bool userns_may_setgroups(const struct user_namespace *ns);
198 extern bool in_userns(const struct user_namespace *ancestor,
199 		       const struct user_namespace *child);
200 extern bool current_in_userns(const struct user_namespace *target_ns);
204 static inline struct user_namespace *get_user_ns(struct user_namespace *ns)  in get_user_ns()
222 static inline void put_user_ns(struct user_namespace *ns)  in put_user_ns()
226 static inline bool userns_may_setgroups(const struct user_namespace *ns)  in userns_may_setgroups()
231 static inline bool in_userns(const struct user_namespace *ancestor,  in in_userns()
232 			     const struct user_namespace *child)  in in_userns()
237 static inline bool current_in_userns(const struct user_namespace *target_ns)  in current_in_userns()