50 		tim = 0;  in do_timens_ktime_to_host()
60 static struct ucounts *inc_time_namespaces(struct user_namespace *ns)  in inc_time_namespaces()  argument
62 	return inc_ucount(ns, current_euid(), UCOUNT_TIME_NAMESPACES);  in inc_time_namespaces()
82 	struct time_namespace *ns;  in clone_time_ns()  local
92 	ns = kzalloc(sizeof(*ns), GFP_KERNEL_ACCOUNT);  in clone_time_ns()
93 	if (!ns)  in clone_time_ns()
96 	ns->vvar_page = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);  in clone_time_ns()
97 	if (!ns->vvar_page)  in clone_time_ns()
100 	err = ns_common_init(ns);  in clone_time_ns()
104 	ns->ucounts = ucounts;  in clone_time_ns()
105 	ns->user_ns = get_user_ns(user_ns);  in clone_time_ns()
106 	ns->offsets = old_ns->offsets;  in clone_time_ns()
107 	ns->frozen_offsets = false;  in clone_time_ns()
108 	ns_tree_add(ns);  in clone_time_ns()
109 	return ns;  in clone_time_ns()
112 	__free_page(ns->vvar_page);  in clone_time_ns()
114 	kfree(ns);  in clone_time_ns()
179 					 struct time_namespace *ns)  in timens_setup_vdso_clock_data()  argument
182 	struct timens_offset monotonic = offset_from_ts(ns->offsets.monotonic);  in timens_setup_vdso_clock_data()
183 	struct timens_offset boottime = offset_from_ts(ns->offsets.boottime);  in timens_setup_vdso_clock_data()
219 				struct time_namespace *ns)  in timens_set_vvar_page()  argument
225 	if (ns == &init_time_ns)  in timens_set_vvar_page()
229 	if (likely(ns->frozen_offsets))  in timens_set_vvar_page()
234 	if (ns->frozen_offsets)  in timens_set_vvar_page()
237 	ns->frozen_offsets = true;  in timens_set_vvar_page()
238 	vdata = page_address(ns->vvar_page);  in timens_set_vvar_page()
241 	for (i = 0; i < CS_BASES; i++)  in timens_set_vvar_page()
242 		timens_setup_vdso_clock_data(&vc[i], ns);  in timens_set_vvar_page()
245 		for (i = 0; i < ARRAY_SIZE(vdata->aux_clock_data); i++)  in timens_set_vvar_page()
246 			timens_setup_vdso_clock_data(&vdata->aux_clock_data[i], ns);  in timens_set_vvar_page()
253 void free_time_ns(struct time_namespace *ns)  in free_time_ns()  argument
255 	ns_tree_remove(ns);  in free_time_ns()
256 	dec_time_namespaces(ns->ucounts);  in free_time_ns()
257 	put_user_ns(ns->user_ns);  in free_time_ns()
258 	ns_common_free(ns);  in free_time_ns()
259 	__free_page(ns->vvar_page);  in free_time_ns()
261 	kfree_rcu(ns, ns.ns_rcu);  in free_time_ns()
266 	struct time_namespace *ns = NULL;  in timens_get()  local
272 		ns = nsproxy->time_ns;  in timens_get()
273 		get_time_ns(ns);  in timens_get()
277 	return ns ? &ns->ns : NULL;  in timens_get()
282 	struct time_namespace *ns = NULL;  in timens_for_children_get()  local
288 		ns = nsproxy->time_ns_for_children;  in timens_for_children_get()
289 		get_time_ns(ns);  in timens_for_children_get()
293 	return ns ? &ns->ns : NULL;  in timens_for_children_get()
296 static void timens_put(struct ns_common *ns)  in timens_put()  argument
298 	put_time_ns(to_time_ns(ns));  in timens_put()
301 void timens_commit(struct task_struct *tsk, struct time_namespace *ns)  in timens_commit()  argument
303 	timens_set_vvar_page(tsk, ns);  in timens_commit()
304 	vdso_join_timens(tsk, ns);  in timens_commit()
310 	struct time_namespace *ns = to_time_ns(new);  in timens_install()  local
315 	if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN) ||  in timens_install()
319 	get_time_ns(ns);  in timens_install()
321 	nsproxy->time_ns = ns;  in timens_install()
323 	get_time_ns(ns);  in timens_install()
325 	nsproxy->time_ns_for_children = ns;  in timens_install()
326 	return 0;  in timens_install()
331 	struct ns_common *nsc = &nsproxy->time_ns_for_children->ns;  in timens_on_fork()
332 	struct time_namespace *ns = to_time_ns(nsc);  in timens_on_fork()  local
338 	get_time_ns(ns);  in timens_on_fork()
340 	nsproxy->time_ns = ns;  in timens_on_fork()
342 	timens_commit(tsk, ns);  in timens_on_fork()
345 static struct user_namespace *timens_owner(struct ns_common *ns)  in timens_owner()  argument
347 	return to_time_ns(ns)->user_ns;  in timens_owner()
370 	struct ns_common *ns;  in proc_timens_show_offsets()  local
373 	ns = timens_for_children_get(p);  in proc_timens_show_offsets()
374 	if (!ns)  in proc_timens_show_offsets()
376 	time_ns = to_time_ns(ns);  in proc_timens_show_offsets()
386 	struct ns_common *ns;  in proc_timens_set_offset()  local
391 	ns = timens_for_children_get(p);  in proc_timens_set_offset()
392 	if (!ns)  in proc_timens_set_offset()
394 	time_ns = to_time_ns(ns);  in proc_timens_set_offset()
401 	for (i = 0; i < noffsets; i++) {  in proc_timens_set_offset()
427 		if (tp.tv_sec < 0 || tp.tv_sec > KTIME_SEC_MAX / 2)  in proc_timens_set_offset()
437 	err = 0;  in proc_timens_set_offset()
439 	for (i = 0; i < noffsets; i++) {  in proc_timens_set_offset()
481 	.ns.ns_type	= ns_common_type(&init_time_ns),
482 	.ns.__ns_ref	= REFCOUNT_INIT(3),
484 	.ns.inum	= ns_init_inum(&init_time_ns),
485 	.ns.ops		= &timens_operations,