From 50d3eeae384382671952bc40e00a58f5ab00fed0 Mon Sep 17 00:00:00 2001
From: ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 19 Mar 2007 16:36:43 +0000
Subject: [PATCH] Close file descriptors when execing network tap setup script,
 by Daniel P. Berrange.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2507 c046a42c-6fe2-441c-8c8c-71466251a162
---
 vl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/vl.c b/vl.c
index e77ed41..f368d9b 100644
--- a/vl.c
+++ b/vl.c
@@ -3621,6 +3621,14 @@ static int net_tap_init(VLANState *vlan, const char *ifname1,
         pid = fork();
         if (pid >= 0) {
             if (pid == 0) {
+                int open_max = sysconf (_SC_OPEN_MAX), i;
+                for (i = 0; i < open_max; i++)
+                    if (i != STDIN_FILENO &&
+                        i != STDOUT_FILENO &&
+                        i != STDERR_FILENO &&
+                        i != fd)
+                        close(i);
+
                 parg = args;
                 *parg++ = (char *)setup_script;
                 *parg++ = ifname;
-- 
2.7.4