+ .null_dev_desc_ok = false,
+ .probe = ext4fs_probe,
+ .close = ext4fs_close,
+ .ls = ext4fs_ls,
+ .exists = ext4fs_exists,
+ .size = ext4fs_size,
+ .read = ext4_read_file,
+ .write = fs_write_unsupported,
+ },
+#endif
+#ifdef CONFIG_SANDBOX
+ {
+ .fstype = FS_TYPE_SANDBOX,
+ .null_dev_desc_ok = true,
+ .probe = sandbox_fs_set_blk_dev,
+ .close = sandbox_fs_close,
+ .ls = sandbox_fs_ls,
+ .exists = sandbox_fs_exists,
+ .size = sandbox_fs_size,
+ .read = fs_read_sandbox,
+ .write = fs_write_sandbox,
+ },
+#endif
+ {
+ .fstype = FS_TYPE_ANY,
+ .null_dev_desc_ok = true,
+ .probe = fs_probe_unsupported,
+ .close = fs_close_unsupported,
+ .ls = fs_ls_unsupported,
+ .exists = fs_exists_unsupported,
+ .size = fs_size_unsupported,
+ .read = fs_read_unsupported,
+ .write = fs_write_unsupported,