25 	struct file_handle *handle = NULL;  in do_sys_name_to_handle()  local
29 	 * the file handle if decodeable file handle was requested.  in do_sys_name_to_handle()
40 	handle = kzalloc(struct_size(handle, f_handle, f_handle.handle_bytes),  in do_sys_name_to_handle()
42 	if (!handle)  in do_sys_name_to_handle()
45 	/* convert handle size to multiple of sizeof(u32) */  in do_sys_name_to_handle()
48 	/* we ask for a non connectable maybe decodeable file handle */  in do_sys_name_to_handle()
50 				    (struct fid *)handle->f_handle,  in do_sys_name_to_handle()
52 	handle->handle_type = retval;  in do_sys_name_to_handle()
53 	/* convert handle size to bytes */  in do_sys_name_to_handle()
55 	handle->handle_bytes = handle_bytes;  in do_sys_name_to_handle()
56 	if ((handle->handle_bytes > f_handle.handle_bytes) ||  in do_sys_name_to_handle()
60 		 * But file system returned 255 always. So handle  in do_sys_name_to_handle()
66 		 * set the handle size to zero so we copy only  in do_sys_name_to_handle()
82 	/* copy the handle */  in do_sys_name_to_handle()
84 		copy_to_user(ufh, handle,  in do_sys_name_to_handle()
85 			     struct_size(handle, f_handle, handle_bytes)))  in do_sys_name_to_handle()
87 	kfree(handle);  in do_sys_name_to_handle()
92  * sys_name_to_handle_at: convert name to handle
94  * @name: name that should be converted to handle.
95  * @handle: resulting file handle
99  *        and whether a decodable file handle is required.
101  * @handle->handle_size indicate the space available to store the
102  * variable part of the file handle in bytes. If there is not
107 		struct file_handle __user *, handle, void __user *, mnt_id,  in SYSCALL_DEFINE5()
125 		err = do_sys_name_to_handle(&path, handle, mnt_id,  in SYSCALL_DEFINE5()
216 static int do_handle_to_path(struct file_handle *handle, struct path *path,  in do_handle_to_path()  argument
222 	/* change the handle size to multiple of sizeof(u32) */  in do_handle_to_path()
223 	handle_dwords = handle->handle_bytes >> 2;  in do_handle_to_path()
225 					  (struct fid *)handle->f_handle,  in do_handle_to_path()
226 					  handle_dwords, handle->handle_type,  in do_handle_to_path()
244  * the encoded file handle. If the caller is only able to create a
289 	struct file_handle *handle = NULL;  in handle_to_path()  local
310 	handle = kmalloc(struct_size(handle, f_handle, f_handle.handle_bytes),  in handle_to_path()
312 	if (!handle) {  in handle_to_path()
316 	/* copy the full handle */  in handle_to_path()
317 	*handle = f_handle;  in handle_to_path()
318 	if (copy_from_user(&handle->f_handle,  in handle_to_path()
325 	retval = do_handle_to_path(handle, path, &ctx);  in handle_to_path()
328 	kfree(handle);  in handle_to_path()
365  * sys_open_by_handle_at: Open the file handle
367  * @handle: file handle to be opened
371  * of the mount point. file handle is decoded relative
376 		struct file_handle __user *, handle,  in SYSCALL_DEFINE3()
384 	ret = do_handle_open(mountdirfd, handle, flags);  in SYSCALL_DEFINE3()
394 			     struct file_handle __user *, handle, int, flags)  in COMPAT_SYSCALL_DEFINE3()
396 	return do_handle_open(mountdirfd, handle, flags);  in COMPAT_SYSCALL_DEFINE3()