1 #include "stdio_impl.h" 2 __ofl_add(FILE * f)3 FILE *__ofl_add(FILE *f) 4 { 5 FILE **head = __ofl_lock(); 6 f->next = *head; 7 if (*head) (*head)->prev = f; 8 *head = f; 9 __ofl_unlock(); 10 return f; 11 } 12