Index: sys/compat/cloudabi/cloudabi_random.c
===================================================================
--- sys/compat/cloudabi/cloudabi_random.c
+++ sys/compat/cloudabi/cloudabi_random.c
@@ -26,6 +26,10 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <sys/types.h>
+#include <sys/random.h>
+#include <sys/uio.h>
+
 #include <compat/cloudabi/cloudabi_proto.h>
 
 int
@@ -32,7 +36,18 @@
 cloudabi_sys_random_get(struct thread *td,
     struct cloudabi_sys_random_get_args *uap)
 {
+	struct iovec iov = {
+		.iov_base = uap->buf,
+		.iov_len = uap->nbyte
+	};
+	struct uio uio = {
+		.uio_iov = &iov,
+		.uio_iovcnt = 1,
+		.uio_resid = iov.iov_len,
+		.uio_segflg = UIO_USERSPACE,
+		.uio_rw = UIO_READ,
+		.uio_td = td
+	};
 
-	/* Not implemented. */
-	return (ENOSYS);
+	return (read_random_uio(&uio, 0));
 }
Index: sys/dev/random/randomdev.c
===================================================================
--- sys/dev/random/randomdev.c
+++ sys/dev/random/randomdev.c
@@ -134,6 +134,13 @@
 static int
 randomdev_read(struct cdev *dev __unused, struct uio *uio, int flags)
 {
+
+	return (read_random_uio(uio, flags));
+}
+
+int
+read_random_uio(struct uio *uio, int flags)
+{
 	uint8_t *random_buf;
 	int c, error;
 	ssize_t nbytes;
Index: sys/sys/random.h
===================================================================
--- sys/sys/random.h
+++ sys/sys/random.h
@@ -31,7 +31,10 @@
 
 #ifdef _KERNEL
 
+struct uio;
+
 u_int read_random(void *, u_int);
+int read_random_uio(struct uio *, int);
 
 /*
  * Note: if you add or remove members of random_entropy_source, remember to also update the