random: cleanup, assume getrandom libc wrapper exists

random.h

@@ -3,37 +3,13 @@
 #include <unistd.h>
 #include <sys/syscall.h>
 #ifdef __linux__
-#include <linux/random.h>
-#endif
-#ifndef SYS_getrandom
-#include <openssl/rand.h>
+#include <sys/random.h>
 #endif
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <string>
 
-// dirty hacks
-#ifdef SYS_getrandom
-inline int getrandom(void *buf, size_t buflen, unsigned int flags)
-{
-	return syscall(SYS_getrandom, buf, buflen, flags);
-}
-#else
-
-#if __linux__
-// ancient linux systems
-#define GRND_NONBLOCK 0
-inline int getrandom(void *buf, size_t buflen, unsigned int flags)
-{
-	int result = RAND_bytes(buf, buflen);
-	if(result == 1)
-	{
-		return (int)buflen;
-	}
-	return -1;
-}
-#endif
 #if __OpenBSD__
 inline int getrandom(void *buf, size_t buflen, unsigned int flags)
 {
@@ -41,7 +17,6 @@ inline int getrandom(void *buf, size_t buflen, unsigned int flags)
 	return 0;
 }
 #endif
-#endif
 /* TODO: if the >=C++11 prngr are good enough, use them */
 class Random
 {