falloc
error = falloc(curthread, &file, &fd, 0);
error = falloc(curthread, &file, &fd, flags);
error = falloc(td, &fp, &fd, fflags);
error = falloc(td, &fp, &fd, uap->flags);
error = falloc(td, &fp, &fd, O_CLOEXEC);
error = falloc(td, &fp, &fd, O_CLOEXEC);
error = falloc(td, &fp, &fd, oflag);
error = falloc(td, &fp1, &fd, oflag);
error = falloc(td, &fp2, &fd, oflag);
if ((error = falloc(td, &fp, &fd, 0)) != 0) {