extern int ad_open (struct adouble *ad, const char *path, int adflags, ...);
extern int ad_openat (struct adouble *, int dirfd, const char *path, int adflags, ...);
extern int ad_refresh (const char *path, struct adouble *);
extern int ad_open (struct adouble *ad, const char *path, int adflags, ...);
extern int ad_openat (struct adouble *, int dirfd, const char *path, int adflags, ...);
extern int ad_refresh (const char *path, struct adouble *);