From b51ef0a02165466c274dc5ae2ea07d783ef918a7 Mon Sep 17 00:00:00 2001
From: Christian Beer <christian.beer@aei.mpg.de>
Date: Wed, 4 Nov 2015 17:55:53 +0100
Subject: [PATCH] Lib: check return value of fread() in crypt_prog

fixes CID 27709 found by Coverity
---
 lib/crypt_prog.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/crypt_prog.cpp b/lib/crypt_prog.cpp
index 4318ca7e01..2a1eb5dea7 100644
--- a/lib/crypt_prog.cpp
+++ b/lib/crypt_prog.cpp
@@ -108,7 +108,9 @@ unsigned int random_int() {
     if (!f) {
         die("can't open /dev/random\n");
     }
-    fread(&n, sizeof(n), 1, f);
+    if (1 != fread(&n, sizeof(n), 1, f)) {
+        die("couldn't read from /dev/random\n");
+    }
     fclose(f);
 #endif
     return n;