STYLE
void follow(file_info_t *, enum STYLE, off_t);
void forward(FILE *, const char *, enum STYLE, off_t, struct stat *);
void reverse(FILE *, const char *, enum STYLE, off_t, struct stat *);
follow(file_info_t *files, enum STYLE style, off_t off)
forward(FILE *fp, const char *fn, enum STYLE style, off_t off, struct stat *sbp)
r_reg(FILE *fp, const char *fn, enum STYLE style, off_t off, struct stat *sbp)
static void r_reg(FILE *, const char *, enum STYLE, off_t, struct stat *);
reverse(FILE *fp, const char *fn, enum STYLE style, off_t off, struct stat *sbp)
enum STYLE style;