al_fopen_fd - Allegro 5 API

       Create  an  ALLEGRO_FILE(3alleg5)  object  that operates on an open file descriptor using stdio routines.
       See the documentation of fdopen() for a description of the `mode' argument.

       Returns an ALLEGRO_FILE object on success or NULL on an error.  On an error, the Allegro  errno  will  be
       set and the file descriptor will not be closed.

       The file descriptor will be closed by al_fclose(3alleg5) so you should not call close() on it.

       al_fopen_fd - Allegro 5 API

al_fopen(3alleg5)

Allegro reference manual                                                                    al_fopen_fd(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_FILE *al_fopen_fd(int fd, const char *mode)