--- xnu/xnu-12377.101.15/bsd/dev/random/randomdev.c
+++ xnu/xnu-4903.231.4/bsd/dev/random/randomdev.c
@@ -56,39 +56,26 @@
 
 d_ioctl_t       random_ioctl;
 
-static int
-random_stop(__unused struct tty *tp, __unused int rw)
-{
-	return 0;
-}
-
-static int
-random_reset(__unused int uban)
-{
-	return 0;
-}
-
-static int
-random_select(__unused dev_t dev, __unused int which, __unused void *wql,
-    __unused struct proc *p)
-{
-	return ENODEV;
-}
-
-static const struct cdevsw random_cdevsw =
-{
-	.d_open = random_open,
-	.d_close = random_close,
-	.d_read = random_read,
-	.d_write = random_write,
-	.d_ioctl = random_ioctl,
-	.d_stop = random_stop,
-	.d_reset = random_reset,
-	.d_select = random_select,
-	.d_mmap = eno_mmap,
-	.d_strategy = eno_strat,
-	.d_reserved_1 = eno_getc,
-	.d_reserved_2 = eno_putc,
+/*
+ * A struct describing which functions will get invoked for certain
+ * actions.
+ */
+static struct cdevsw random_cdevsw =
+{
+	random_open,		/* open */
+	random_close,		/* close */
+	random_read,		/* read */
+	random_write,		/* write */
+	random_ioctl,		/* ioctl */
+	(stop_fcn_t *)nulldev, /* stop */
+	(reset_fcn_t *)nulldev, /* reset */
+	NULL,				/* tty's */
+	eno_select,			/* select */
+	eno_mmap,			/* mmap */
+	eno_strat,			/* strategy */
+	eno_getc,			/* getc */
+	eno_putc,			/* putc */
+	0					/* type */
 };
 
 
@@ -106,20 +93,21 @@
 		panic("random_init: failed to allocate a major number!");
 	}
 
-	devfs_make_node(makedev(ret, RANDOM_MINOR), DEVFS_CHAR,
-	    UID_ROOT, GID_WHEEL, 0666, "random");
+	devfs_make_node(makedev (ret, RANDOM_MINOR), DEVFS_CHAR,
+		UID_ROOT, GID_WHEEL, 0666, "random", 0);
 
 	/*
 	 * also make urandom
 	 * (which is exactly the same thing in our context)
 	 */
-	devfs_make_node(makedev(ret, URANDOM_MINOR), DEVFS_CHAR,
-	    UID_ROOT, GID_WHEEL, 0666, "urandom");
-}
-
-int
-random_ioctl(   __unused dev_t dev, u_long cmd, __unused caddr_t data,
-    __unused int flag, __unused struct proc *p  )
+	devfs_make_node(makedev (ret, URANDOM_MINOR), DEVFS_CHAR,
+		UID_ROOT, GID_WHEEL, 0666, "urandom", 0);
+
+}
+
+int
+random_ioctl(	__unused dev_t dev, u_long cmd, __unused caddr_t data,
+				__unused int flag, __unused struct proc *p  )
 {
 	switch (cmd) {
 	case FIONBIO:
@@ -129,7 +117,7 @@
 		return ENODEV;
 	}
 
-	return 0;
+	return (0);
 }
 
 /*
@@ -145,17 +133,15 @@
 	 * make sure that we have privledges do so
 	 */
 	if (flags & FWRITE) {
-		if (securelevel >= 2) {
-			return EPERM;
-		}
+		if (securelevel >= 2)
+			return (EPERM);
 #ifndef __APPLE__
-		if ((securelevel >= 1) && proc_suser(p)) {
-			return EPERM;
-		}
-#endif  /* !__APPLE__ */
-	}
-
-	return 0;
+		if ((securelevel >= 1) && proc_suser(p))
+			return (EPERM);
+#endif	/* !__APPLE__ */
+	}
+
+	return (0);
 }
 
 
@@ -166,7 +152,7 @@
 int
 random_close(__unused dev_t dev, __unused int flags, __unused int mode, __unused struct proc *p)
 {
-	return 0;
+	return (0);
 }
 
 
@@ -175,31 +161,29 @@
  * prng.
  */
 int
-random_write(dev_t dev, struct uio *uio, __unused int ioflag)
-{
-	int retCode = 0;
-	char rdBuffer[256];
-
-	if (minor(dev) != RANDOM_MINOR) {
-		return EPERM;
-	}
-
-	/* Security server is sending us entropy */
-
-	while ((size_t)uio_resid(uio) > 0 && retCode == 0) {
-		/* get the user's data */
-		size_t bytesToInput = MIN((size_t)uio_resid(uio), sizeof(rdBuffer));
-		retCode = uiomove(rdBuffer, (int)bytesToInput, uio);
-		if (retCode != 0) {
-			break;
-		}
-		retCode = write_random(rdBuffer, (u_int)bytesToInput);
-		if (retCode != 0) {
-			break;
-		}
-	}
-
-	return retCode;
+random_write (dev_t dev, struct uio *uio, __unused int ioflag)
+{
+    int retCode = 0;
+    char rdBuffer[256];
+
+    if (minor(dev) != RANDOM_MINOR)
+	return EPERM;
+
+    /* Security server is sending us entropy */
+
+    while (uio_resid(uio) > 0 && retCode == 0) {
+        /* get the user's data */
+        int bytesToInput = MIN(uio_resid(uio),
+			       (user_ssize_t) sizeof(rdBuffer));
+        retCode = uiomove(rdBuffer, bytesToInput, uio);
+        if (retCode != 0)
+	    break;
+	retCode = write_random(rdBuffer, bytesToInput);
+        if (retCode != 0)
+	    break;
+    }
+
+    return retCode;
 }
 
 /*
@@ -211,17 +195,17 @@
 	int retCode = 0;
 	char buffer[512];
 
-	size_t bytes_remaining = (size_t)uio_resid(uio);
+	user_ssize_t bytes_remaining = uio_resid(uio);
 	while (bytes_remaining > 0 && retCode == 0) {
-		size_t bytesToRead = MIN(bytes_remaining, sizeof(buffer));
-		read_random(buffer, (u_int)bytesToRead);
-
-		retCode = uiomove(buffer, (int)bytesToRead, uio);
-		if (retCode != 0) {
+		int bytesToRead = MIN(bytes_remaining,
+				      (user_ssize_t) sizeof(buffer));
+		read_random(buffer, bytesToRead);
+
+		retCode = uiomove(buffer, bytesToRead, uio);
+		if (retCode != 0)
 			break;
-		}
-
-		bytes_remaining = (size_t)uio_resid(uio);
+
+		bytes_remaining = uio_resid(uio);
 	}
 
 	return retCode;
@@ -234,19 +218,18 @@
 RandomULong(void)
 {
 	u_int32_t buf;
-	read_random(&buf, sizeof(buf));
-	return buf;
-}
-
-
-int
-getentropy(__unused struct proc * p, struct getentropy_args *gap, __unused int * ret)
-{
+	read_random(&buf, sizeof (buf));
+	return (buf);
+}
+
+
+int
+getentropy(__unused struct proc * p, struct getentropy_args *gap, __unused int * ret) {
 	user_addr_t user_addr;
-	user_size_t user_size;
+	uint32_t user_size;
 	char buffer[256];
 
-	user_addr = (user_addr_t)gap->buffer;
+	user_addr = (vm_map_offset_t)gap->buffer;
 	user_size = gap->size;
 	/* Can't request more than 256 random bytes
 	 * at once. Complying with openbsd getentropy()
@@ -254,6 +237,6 @@
 	if (user_size > sizeof(buffer)) {
 		return EINVAL;
 	}
-	read_random(buffer, (u_int)user_size);
+	read_random(buffer, user_size);
 	return copyout(buffer, user_addr, user_size);
 }