From ab4fbe1b4fe1c7581339e384929851a5e6b944b7 Mon Sep 17 00:00:00 2001
From: Josh Gao <jmgao@google.com>
Date: Wed, 31 Aug 2016 15:32:23 -0700
Subject: [PATCH] init: create /dev/urandom, /dev/random in first stage.

Create /dev/random and /dev/urandom in the first stage, so that when we
reexec, arc4random is available for libc initialization.

Bug: http://b/29622562
Change-Id: I5b2071539a17eec609faac91dc28b08eba5ff89b
---
 init/init.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/init/init.cpp b/init/init.cpp
index 957527bd9..feaee0dbb 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -588,6 +588,8 @@ int main(int argc, char** argv) {
         mount("sysfs", "/sys", "sysfs", 0, NULL);
         mount("selinuxfs", "/sys/fs/selinux", "selinuxfs", 0, NULL);
         mknod("/dev/kmsg", S_IFCHR | 0600, makedev(1, 11));
+        mknod("/dev/random", S_IFCHR | 0666, makedev(1, 8));
+        mknod("/dev/urandom", S_IFCHR | 0666, makedev(1, 9));
         early_mount();
     }
 
@@ -638,6 +640,8 @@ int main(int argc, char** argv) {
     restorecon("/dev");
     restorecon("/dev/kmsg");
     restorecon("/dev/socket");
+    restorecon("/dev/random");
+    restorecon("/dev/urandom");
     restorecon("/dev/__properties__");
     restorecon("/property_contexts");
     restorecon_recursive("/sys");