al_open_fs_entry - Allegro 5 API

       Open  an  ALLEGRO_FILE(3alleg5)  handle  to  a filesystem entry, for the given access mode.  This is like
       calling al_fopen(3alleg5) with the name of the filesystem entry, but uses the appropriate file interface,
       not whatever was set with the latest call to al_set_new_file_interface(3alleg5).

       Returns the handle on success, NULL on error.

       al_open_fs_entry - Allegro 5 API

al_fopen(3alleg5)

Allegro reference manual                                                               al_open_fs_entry(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_FILE *al_open_fs_entry(ALLEGRO_FS_ENTRY *e, const char *mode)