flock_copyfil
VERIFY3S(flock_copyfil(&flock_fileA, &afd1), ==, 0);
VERIFY3S(flock_copyfil(&flock_fileA, &afd2), ==, 0);
VERIFY3S(flock_copyfil(&flock_fileA, &afd3), ==, 0);
static int flock_copyfil(lockinfo_t *, lockinfo_t *);
VERIFY3S(flock_copyfil(&flock_fileA, &afd1), ==, 0);
VERIFY3S(flock_copyfil(&flock_fileA, &afd2), ==, 0);
VERIFY3S(flock_copyfil(&flock_fileA, &afd3), ==, 0);