+/*
+ * Get the simple file system protocol for a file device path.
+ *
+ * The full path provided is split into device part and into a file
+ * part. The device part is used to find the handle on which the
+ * simple file system protocol is installed.
+ *
+ * @full_path device path including device and file
+ * @return simple file system protocol
+ */
+struct efi_simple_file_system_protocol *
+efi_fs_from_path(struct efi_device_path *full_path)
+{
+ struct efi_object *efiobj;
+ struct efi_handler *handler;
+ struct efi_device_path *device_path;
+ struct efi_device_path *file_path;
+ efi_status_t ret;
+
+ /* Split the path into a device part and a file part */
+ ret = efi_dp_split_file_path(full_path, &device_path, &file_path);
+ if (ret != EFI_SUCCESS)
+ return NULL;
+ efi_free_pool(file_path);
+
+ /* Get the EFI object for the partition */
+ efiobj = efi_dp_find_obj(device_path, NULL);
+ efi_free_pool(device_path);
+ if (!efiobj)
+ return NULL;
+
+ /* Find the simple file system protocol */
+ ret = efi_search_protocol(efiobj, &efi_simple_file_system_protocol_guid,
+ &handler);
+ if (ret != EFI_SUCCESS)
+ return NULL;
+
+ /* Return the simple file system protocol for the partition */
+ return handler->protocol_interface;
+}
+
+/*
+ * Create a handle for a partition or disk
+ *
+ * @parent parent handle
+ * @dp_parent parent device path
+ * @if_typename interface name for block device
+ * @desc internal block device
+ * @dev_index device index for block device
+ * @offset offset into disk for simple partitions
+ * @return disk object
+ */
+static efi_status_t efi_disk_add_dev(
+ efi_handle_t parent,
+ struct efi_device_path *dp_parent,
+ const char *if_typename,
+ struct blk_desc *desc,
+ int dev_index,
+ lbaint_t offset,
+ unsigned int part,
+ struct efi_disk_obj **disk)