21 static struct ucounts *inc_uts_namespaces(struct user_namespace *ns)  in inc_uts_namespaces()  argument
23 	return inc_ucount(ns, current_euid(), UCOUNT_UTS_NAMESPACES);  in inc_uts_namespaces()
32  * Clone a new ns copying an original utsname, setting refcount to 1
34  * Return ERR_PTR(-ENOMEM) on error (failure to allocate), new ns otherwise
39 	struct uts_namespace *ns;  in clone_uts_ns()  local
49 	ns = kmem_cache_zalloc(uts_ns_cache, GFP_KERNEL);  in clone_uts_ns()
50 	if (!ns)  in clone_uts_ns()
53 	err = ns_common_init(ns);  in clone_uts_ns()
57 	ns->ucounts = ucounts;  in clone_uts_ns()
59 	memcpy(&ns->name, &old_ns->name, sizeof(ns->name));  in clone_uts_ns()
60 	ns->user_ns = get_user_ns(user_ns);  in clone_uts_ns()
62 	ns_tree_add(ns);  in clone_uts_ns()
63 	return ns;  in clone_uts_ns()
66 	kmem_cache_free(uts_ns_cache, ns);  in clone_uts_ns()
96 void free_uts_ns(struct uts_namespace *ns)  in free_uts_ns()  argument
98 	ns_tree_remove(ns);  in free_uts_ns()
99 	dec_uts_namespaces(ns->ucounts);  in free_uts_ns()
100 	put_user_ns(ns->user_ns);  in free_uts_ns()
101 	ns_common_free(ns);  in free_uts_ns()
103 	kfree_rcu(ns, ns.ns_rcu);  in free_uts_ns()
108 	struct uts_namespace *ns = NULL;  in utsns_get()  local
114 		ns = nsproxy->uts_ns;  in utsns_get()
115 		get_uts_ns(ns);  in utsns_get()
119 	return ns ? &ns->ns : NULL;  in utsns_get()
122 static void utsns_put(struct ns_common *ns)  in utsns_put()  argument
124 	put_uts_ns(to_uts_ns(ns));  in utsns_put()
130 	struct uts_namespace *ns = to_uts_ns(new);  in utsns_install()  local
132 	if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) ||  in utsns_install()
136 	get_uts_ns(ns);  in utsns_install()
138 	nsproxy->uts_ns = ns;  in utsns_install()
142 static struct user_namespace *utsns_owner(struct ns_common *ns)  in utsns_owner()  argument
144 	return to_uts_ns(ns)->user_ns;  in utsns_owner()