commit 1e653d0ff7fc2e06a1cb1e05c01feecde84e67d3
author Kurt Roeckx <kurt@roeckx.be> Sat Jun 02 18:15:32 2018 +0200
committer Kurt Roeckx <kurt@roeckx.be> Sun Jun 03 12:14:32 2018 +0200
tree 2f79ec30bad64a34b98ca3d796eff0082bab61b4
parent 2545f9446e4a924548f393cc9e7391e6b10ed1b5

Fix checking the return value of getentropy()

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

crypto/rand/rand_unix.c

diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index e698dfd..9f17494 100644
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -249,7 +249,7 @@
      */
     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)