From: Kurt Roeckx <kurt@roeckx.be>
Date: Sat, 2 Jun 2018 16:15:32 +0000 (+0200)
Subject: Fix checking the return value of getentropy()
X-Git-Tag: OpenSSL_1_1_1-pre8~90
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=1e653d0ff7fc2e06a1cb1e05c01feecde84e67d3;p=oweals%2Fopenssl.git

Fix checking the return value of getentropy()

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

diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index e698dfde65..9f17494d11 100644
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -249,7 +249,7 @@ int syscall_random(void *buf, size_t buflen)
      */
     p_getentropy.p = DSO_global_lookup("getentropy");
     if (p_getentropy.p != NULL)
-        return p_getentropy.f(buf, buflen);
+        return p_getentropy.f(buf, buflen) == 0 ? buflen : 0;
 
     /* Linux supports this since version 3.17 */
 #  if defined(__linux) && defined(SYS_getrandom)