OF_read
if (OF_read(stdin, &ch, 1) > 0 && ch != '\0')
if (OF_read(stdin, &ch, 1) > 0) {
n = OF_read(dp->d_handle, buf, size);
length = OF_read(netinstance, ptr, len);
int OF_read(ihandle_t, void *, int);
if (OF_read(stdin, &ch, 1) > 0) {
r = OF_read(sc->ofwd_instance, (void *)bp->bio_data,
ssize_t OF_read(ihandle_t instance, void *buf, size_t len);