Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_INT64 to @value.
If @attribute is of a different type, this operation will fail.
If @cancellable is not %NULL, then the operation can be cancelled by
triggering the cancellable object from another thread. If the operation
was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_INT64 to @value. If @attribute is of a different type, this operation will fail.
If @cancellable is not %NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.