int bf_read (BFile bf, int no, int offset, int num, void *buf);
int bf_write (BFile bf, int no, int offset, int num, const void *buf);
void bf_cache (int enableFlag);
int bf_read (BFile bf, int no, int offset, int num, void *buf);
int bf_write (BFile bf, int no, int offset, int num, const void *buf);
void bf_cache (int enableFlag);
int bf_commitExists (void);
void bf_commitExec (void);
void bf_commitClean (void);
int bf_commitExists (void);
void bf_commitExec (void);
void bf_commitClean (void);