--- xnu/xnu-12377.101.15/tests/dev_zero.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include <stdio.h>
-#include <fcntl.h>
-#include <util.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <darwintest.h>
-
-T_DECL(dev_zero,
-    "test reading from /dev/zero",
-    T_META_ASROOT(false))
-{
-	int dev = opendev("/dev/zero", O_RDONLY, 0, NULL);
-	char buffer[100];
-
-	for (int i = 0; i < 100; i++) {
-		buffer[i] = 0xff;
-	}
-
-	int rd_sz = read(dev, buffer, sizeof(buffer));
-
-	T_EXPECT_EQ(rd_sz, 100, "read from /dev/zero failed");
-
-	for (int i = 0; i < 100; i++) {
-		if (buffer[i]) {
-			T_FAIL("Unexpected non-zero character read from /dev/zero");
-		}
-	}
-
-	close(dev);
-}
-
-T_DECL(dev_zero_permissions,
-    "ensure /dev/zero's permissions can't be updated",
-    T_META_ASROOT(true))
-{
-	struct stat sb = {0};
-	const char *dev = "/dev/zero";
-	int ret = 0;
-
-	ret = stat(dev, &sb);
-	T_ASSERT_POSIX_SUCCESS(ret, "stat /dev/zero");
-	T_ASSERT_TRUE(sb.st_mode & S_IWOTH, "/dev/zero world writable");
-
-	ret = chmod(dev, 0664);
-	T_ASSERT_POSIX_FAILURE(ret, EPERM, "chmod /dev/zero should fail w/ EPERM");
-
-	ret = stat(dev, &sb);
-	T_ASSERT_POSIX_SUCCESS(ret, "stat /dev/zero");
-	T_ASSERT_TRUE(sb.st_mode & S_IWOTH, "/dev/zero still world writable");
-}