From f87407aacfd335398cc6897d3d65103f20ead20a Mon Sep 17 00:00:00 2001
From: Mikkel Kamstrup Erlandsen
Date: Wed, 19 Mar 2014 13:32:45 +0100
Subject: device: fix potential integer overflow in mstime64() on 32 bit
 systems

---
 src/device.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/device.c b/src/device.c
index 1297a85..ef97f72 100644
--- a/src/device.c
+++ b/src/device.c
@@ -124,7 +124,10 @@ static uint64_t mstime64(void)
 {
 	struct timeval tv;
 	gettimeofday(&tv, NULL);
-	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+
+    // Careful, avoid overflow on 32 bit systems
+    // time_t could be 4 bytes
+	return ((long long)tv.tv_sec) * 1000LL + ((long long)tv.tv_usec) / 1000LL;
 }
 
 static struct mux_device* get_mux_device_for_id(int device_id)
-- 
cgit v1.1-32-gdbae