-int write_one_line_file(const char *fn, const char *line);
-int write_one_line_file_atomic(const char *fn, const char *line);
+int write_string_to_file(FILE *f, const char *line);
+int write_string_file(const char *fn, const char *line);
+int write_string_file_atomic(const char *fn, const char *line);
+