[libvirt] [PATCH] ebiptablesWriteToTempFile: don't close a negative file descriptor

[Jim Meyering]

If mkstemp fails here, we end up closing a negative FD:

    int fd = mkstemp(filename);

    if (fd < 0) {
        virNWFilterReportError(VIR_ERR_INTERNAL_ERROR,
                               "%s",
                               _("cannot create temporary file"));
        goto err_exit;
    }

Here's the fix:

>From b7c6593b3a8b59d49b492cd45fbf5f9c706bb78f Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Tue, 18 May 2010 10:11:23 +0200
Subject: [PATCH] ebiptablesWriteToTempFile: don't close a negative file descriptor

* src/nwfilter/nwfilter_ebiptables_driver.c (ebiptablesWriteToTempFile):
Skip the close if "fd" is negative.
---
 src/nwfilter/nwfilter_ebiptables_driver.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/nwfilter/nwfilter_ebiptables_driver.c b/src/nwfilter/nwfilter_ebiptables_driver.c
index 63bcbd7..ae21906 100644
--- a/src/nwfilter/nwfilter_ebiptables_driver.c
+++ b/src/nwfilter/nwfilter_ebiptables_driver.c
@@ -2245,7 +2245,8 @@ ebiptablesWriteToTempFile(const char *string) {

 err_exit:
     VIR_FREE(header);
-    close(fd);
+    if (fd >= 0)
+        close(fd);
     unlink(filename);
     return NULL;
 }
-- 
1.7.1.250.g7d1e8