Security-163.tar.gz

[apple/security.git] / cdsa / cdsa_utilities / devrandom.h

diff --git a/cdsa/cdsa_utilities/devrandom.h b/cdsa/cdsa_utilities/devrandom.h
index 2905546a2411e23f650970902fe0ddd64234c985..708df47e731f2f6913813a60043c6d60cc819f3e 100644 (file)
--- a/cdsa/cdsa_utilities/devrandom.h
+++ b/cdsa/cdsa_utilities/devrandom.h
@@ -35,6 +35,14 @@ namespace Security {
 // It is not repeatable. AddEntropy() contributes random entropy to a global pool (only).
 //
 class DevRandomGenerator {
+       struct Readonly : public UnixPlusPlus::FileDesc {
+               Readonly() { open("/dev/random", O_RDONLY); }
+       };
+       
+       struct Writable : public UnixPlusPlus::FileDesc {
+               Writable() { open("/dev/random", O_RDWR); }
+       };
+
 public:
     DevRandomGenerator(bool writable = false);
     
@@ -42,7 +50,8 @@ public:
     void addEntropy(const void *data, size_t length);
 
 private:
-    static ModuleNexus<UnixPlusPlus::FileDesc> mDevRandom;
+    static ModuleNexus<Readonly> mReader;
+       static ModuleNexus<Writable> mWriter;
 };