1 files changed, 13 insertions, 3 deletions
diff --git a/src/basic/random-util.h b/src/basic/random-util.h
index 9a103f0e94..3e8c288d3d 100644
--- a/src/basic/random-util.h
+++ b/src/basic/random-util.h
@@ -5,9 +5,17 @@
 #include <stddef.h>
 #include <stdint.h>
 
-int acquire_random_bytes(void *p, size_t n, bool high_quality_required);
-void pseudorandom_bytes(void *p, size_t n);
-void random_bytes(void *p, size_t n);
+typedef enum RandomFlags {
+        RANDOM_EXTEND_WITH_PSEUDO = 1 << 0, /* If we can't get enough genuine randomness, but some, fill up the rest with pseudo-randomness */
+        RANDOM_BLOCK              = 1 << 1, /* Rather block than return crap randomness (only if the kernel supports that) */
+        RANDOM_DONT_DRAIN         = 1 << 2, /* If we can't get any randomness at all, return early with -EAGAIN */
+        RANDOM_ALLOW_RDRAND       = 1 << 3, /* Allow usage of the CPU RNG */
+} RandomFlags;
+
+int genuine_random_bytes(void *p, size_t n, RandomFlags flags); /* returns "genuine" randomness, optionally filled upwith pseudo random, if not enough is available */
+void pseudo_random_bytes(void *p, size_t n);                    /* returns only pseudo-randommess (but possibly seeded from something better) */
+void random_bytes(void *p, size_t n);                           /* returns genuine randomness if cheaply available, and pseudo randomness if not. */
+
 void initialize_srand(void);
 
 static inline uint64_t random_u64(void) {
@@ -21,3 +29,5 @@ static inline uint32_t random_u32(void) {
         random_bytes(&u, sizeof(u));
         return u;
 }
+
+int rdrand(unsigned long *ret);