31 lines
918 B
Diff
31 lines
918 B
Diff
From eaf63d314d50cba5b2cfa8f18de64a91d3131b94 Mon Sep 17 00:00:00 2001
|
|
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
|
|
Date: Thu, 3 May 2018 17:07:39 +0200
|
|
Subject: [PATCH 2/2] Better initialization of random generator
|
|
|
|
Use full time precision to initialize random generator. The old
|
|
code was prone to initialize it to the same values in specific
|
|
circumstances (boot without RTC, multiple VMs starting at once).
|
|
---
|
|
sysdep/unix/io.c | 4 +++-
|
|
1 file changed, 3 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
|
|
index 012deaf0..11a0d6f1 100644
|
|
--- a/sysdep/unix/io.c
|
|
+++ b/sysdep/unix/io.c
|
|
@@ -2144,7 +2144,9 @@ io_init(void)
|
|
// XXX init_times();
|
|
// XXX update_times();
|
|
boot_time = current_time();
|
|
- srandom((uint) (current_real_time() TO_S));
|
|
+
|
|
+ u64 now = (u64) current_real_time();
|
|
+ srandom((uint) (now ^ (now >> 32)));
|
|
}
|
|
|
|
static int short_loops = 0;
|
|
--
|
|
2.17.0
|
|
|