From 539618a0ddc2dc7f0fbe28de2ae0e07b34c81e60 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 29 Oct 2014 17:06:32 +0100
Subject: util: make use of the new getrandom() syscall if it is available when
 needing entropy

Doesn't require an fd, and could be a bit faster, so let's make use of
it, if it is available.
---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index f8a95cb9c8..82bc7a63ff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -308,7 +308,7 @@ LIBS="$save_LIBS"
 
 AC_CHECK_FUNCS([memfd_create])
 AC_CHECK_FUNCS([__secure_getenv secure_getenv])
-AC_CHECK_DECLS([gettid, pivot_root, name_to_handle_at, setns, LO_FLAGS_PARTSCAN],
+AC_CHECK_DECLS([gettid, pivot_root, name_to_handle_at, setns, getrandom, LO_FLAGS_PARTSCAN],
                [], [], [[
 #include <sys/types.h>
 #include <unistd.h>
@@ -316,6 +316,7 @@ AC_CHECK_DECLS([gettid, pivot_root, name_to_handle_at, setns, LO_FLAGS_PARTSCAN]
 #include <fcntl.h>
 #include <sched.h>
 #include <linux/loop.h>
+#include <linux/random.h>
 ]])
 
 AC_CHECK_DECLS([IFLA_MACVLAN_FLAGS,
-- 
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