From: Kurt Roeckx <kurt@roeckx.be>
Date: Sat, 2 Jun 2018 15:54:29 +0000 (+0200)
Subject: Remove support for calling getrandom(), we now always call getentropy()
X-Git-Tag: OpenSSL_1_1_1-pre8~91
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=2545f9446e4a924548f393cc9e7391e6b10ed1b5

Remove support for calling getrandom(), we now always call getentropy()

Only Linux and FreeBSD provide getrandom(), but they both also provide
getentropy() since the same version and we already tried to call that.

Reviewed-by: Andy Polyakov <appro@openssl.org>
GH: #6405
---

diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index 0c8e0dc488..e698dfde65 100644
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -164,20 +164,6 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
 #   error "Seeding uses urandom but DEVRANDOM is not configured"
 #  endif
 
-#  if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
-#   if __GLIBC_PREREQ(2, 25)
-#    define OPENSSL_HAVE_GETRANDOM
-#   endif
-#  endif
-
-#  if (defined(__FreeBSD__) && __FreeBSD_version >= 1200061)
-#   define OPENSSL_HAVE_GETRANDOM
-#  endif
-
-#  if defined(OPENSSL_HAVE_GETRANDOM)
-#   include <sys/random.h>
-#  endif
-
 #  if defined(OPENSSL_RAND_SEED_OS)
 #   if !defined(DEVRANDOM)
 #    error "OS seeding requires DEVRANDOM to be configured"
@@ -265,10 +251,6 @@ int syscall_random(void *buf, size_t buflen)
     if (p_getentropy.p != NULL)
         return p_getentropy.f(buf, buflen);
 
-#  if defined(OPENSSL_HAVE_GETRANDOM)
-    return (int)getrandom(buf, buflen, 0);
-#  endif
-
     /* Linux supports this since version 3.17 */
 #  if defined(__linux) && defined(SYS_getrandom)
     return (int)syscall(SYS_getrandom, buf, buflen, 0);