46 	struct ns_common *ns = inode->i_private;  in ns_dname()  local
47 	const struct proc_ns_operations *ns_ops = ns->ops;  in ns_dname()
60 	struct ns_common *ns = inode->i_private;  in nsfs_evict()  local
62 	ns->ops->put(ns);  in nsfs_evict()
68 	struct ns_common *ns;  in ns_get_path_cb()  local
70 	ns = ns_get_cb(private_data);  in ns_get_path_cb()
71 	if (!ns)  in ns_get_path_cb()
74 	return path_from_stashed(&ns->stashed, nsfs_mnt, ns, path);  in ns_get_path_cb()
102  * @ns: the namespace to open
104  * This will consume a reference to @ns indendent of success or failure.
108 int open_namespace(struct ns_common *ns)  in open_namespace()  argument
115 	err = path_from_stashed(&ns->stashed, nsfs_mnt, ns, &path);  in open_namespace()
116 	if (err < 0)  in open_namespace()
120 	if (fd < 0)  in open_namespace()
131 int open_related_ns(struct ns_common *ns,  in open_related_ns()  argument
132 		   struct ns_common *(*get_ns)(struct ns_common *ns))  in open_related_ns()  argument
136 	relative = get_ns(ns);  in open_related_ns()
156 	kinfo->mnt_ns_id	= mnt_ns->ns.ns_id;  in copy_ns_info_to_user()
165 	return 0;  in copy_ns_info_to_user()
203 	struct ns_common *ns;  in ns_ioctl()  local
213 	ns = get_proc_ns(file_inode(filp));  in ns_ioctl()
216 		return open_related_ns(ns, ns_get_owner);  in ns_ioctl()
218 		if (!ns->ops->get_parent)  in ns_ioctl()
220 		return open_related_ns(ns, ns->ops->get_parent);  in ns_ioctl()
222 		return ns->ns_type;  in ns_ioctl()
224 		if (ns->ns_type != CLONE_NEWUSER)  in ns_ioctl()
226 		user_ns = container_of(ns, struct user_namespace, ns);  in ns_ioctl()
237 		if (ns->ns_type != CLONE_NEWPID)  in ns_ioctl()
241 		pid_ns = container_of(ns, struct pid_namespace, ns);  in ns_ioctl()
267 			ret = 0;  in ns_ioctl()
276 		if (ns->ns_type != CLONE_NEWNS)  in ns_ioctl()
284 		id = ns->ns_id;  in ns_ioctl()
296 		if (ns->ns_type != CLONE_NEWNS)  in ns_ioctl()
305 		return copy_ns_info_to_user(to_mnt_ns(ns), uinfo, usize, &kinfo);  in ns_ioctl()
317 		if (ns->ns_type != CLONE_NEWNS)  in ns_ioctl()
323 		mnt_ns = get_sequential_mnt_ns(to_mnt_ns(ns), previous);  in ns_ioctl()
327 		ns = to_ns_common(mnt_ns);  in ns_ioctl()
329 		ret = path_from_stashed(&ns->stashed, nsfs_mnt, ns, &path);  in ns_ioctl()
334 		if (fd < 0)  in ns_ioctl()
346 			ret = copy_ns_info_to_user(to_mnt_ns(ns), uinfo, usize, &kinfo);  in ns_ioctl()
366 	struct ns_common *ns;  in ns_get_name()  local
369 	ns = ns_ops->get(task);  in ns_get_name()
370 	if (ns) {  in ns_get_name()
372 		res = snprintf(buf, size, "%s:[%u]", name, ns->inum);  in ns_get_name()
373 		ns_ops->put(ns);  in ns_get_name()
385  * @ns: current namespace
391 bool ns_match(const struct ns_common *ns, dev_t dev, ino_t ino)  in ns_match()  argument
393 	return (ns->inum == ino) && (nsfs_mnt->mnt_sb->s_dev == dev);  in ns_match()
400 	const struct ns_common *ns = inode->i_private;  in nsfs_show_path()  local
401 	const struct proc_ns_operations *ns_ops = ns->ops;  in nsfs_show_path()
404 	return 0;  in nsfs_show_path()
415 	struct ns_common *ns = data;  in nsfs_init_inode()  local
420 	inode->i_ino = ns->inum;  in nsfs_init_inode()
421 	return 0;  in nsfs_init_inode()
426 	struct ns_common *ns = data;  in nsfs_put_data()  local
427 	ns->ops->put(ns);  in nsfs_put_data()
442 	struct ns_common *ns = inode->i_private;  in nsfs_encode_fh()  local
455 	fid->ns_id	= ns->ns_id;  in nsfs_encode_fh()
456 	fid->ns_type	= ns->ns_type;  in nsfs_encode_fh()
467 	struct ns_common *ns;  in nsfs_fh_to_dentry()  local
475 	    memchr_inv((void *)fid + NSFS_FID_SIZE_U32_LATEST, 0,  in nsfs_fh_to_dentry()
487 		ns = ns_tree_lookup_rcu(fid->ns_id, fid->ns_type);  in nsfs_fh_to_dentry()
488 		if (!ns)  in nsfs_fh_to_dentry()
491 		VFS_WARN_ON_ONCE(ns->ns_id != fid->ns_id);  in nsfs_fh_to_dentry()
492 		VFS_WARN_ON_ONCE(ns->ns_type != fid->ns_type);  in nsfs_fh_to_dentry()
494 		if (ns->inum != fid->ns_inum)  in nsfs_fh_to_dentry()
497 		if (!__ns_ref_get(ns))  in nsfs_fh_to_dentry()
501 	switch (ns->ns_type) {  in nsfs_fh_to_dentry()
504 		if (!current_in_namespace(to_cg_ns(ns)))  in nsfs_fh_to_dentry()
505 			owning_ns = to_cg_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
510 		if (!current_in_namespace(to_ipc_ns(ns)))  in nsfs_fh_to_dentry()
511 			owning_ns = to_ipc_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
515 		if (!current_in_namespace(to_mnt_ns(ns)))  in nsfs_fh_to_dentry()
516 			owning_ns = to_mnt_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
520 		if (!current_in_namespace(to_net_ns(ns)))  in nsfs_fh_to_dentry()
521 			owning_ns = to_net_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
526 		if (!current_in_namespace(to_pid_ns(ns))) {  in nsfs_fh_to_dentry()
527 			owning_ns = to_pid_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
528 		} else if (!READ_ONCE(to_pid_ns(ns)->child_reaper)) {  in nsfs_fh_to_dentry()
529 			ns->ops->put(ns);  in nsfs_fh_to_dentry()
536 		if (!current_in_namespace(to_time_ns(ns)))  in nsfs_fh_to_dentry()
537 			owning_ns = to_time_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
542 		if (!current_in_namespace(to_user_ns(ns)))  in nsfs_fh_to_dentry()
543 			owning_ns = to_user_ns(ns);  in nsfs_fh_to_dentry()
548 		if (!current_in_namespace(to_uts_ns(ns)))  in nsfs_fh_to_dentry()
549 			owning_ns = to_uts_ns(ns)->user_ns;  in nsfs_fh_to_dentry()
557 		ns->ops->put(ns);  in nsfs_fh_to_dentry()
562 	ret = path_from_stashed(&ns->stashed, nsfs_mnt, ns, &path);  in nsfs_fh_to_dentry()
573 	return 0;  in nsfs_export_permission()
578 	return file_open_root(path, "", oflags, 0);  in nsfs_export_open()
597 	return 0;  in nsfs_init_fs_context()