From cde92647ea4f5c487059a3c89f2e3f1aec9a42d3 Mon Sep 17 00:00:00 2001
From: Ian Campbell <ian.campbell@citrix.com>
Date: Thu, 12 Mar 2015 17:56:47 +0000
Subject: [PATCH] tools: xl: prepend root= to root field on command line with
 no extra

This was broken in 49ab17a3a615 "tools: xl: handle unspecified extra=
when dealing with root=".

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxl/xl_cmdimpl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index a27ac9e91a..04faf98426 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -817,7 +817,8 @@ static char *parse_cmdline(XLU_Config *config)
             if (asprintf(&cmdline, "root=%s %s", root, extra) == -1)
                 cmdline = NULL;
         } else if (root) {
-            cmdline = strdup(root);
+            if (asprintf(&cmdline, "root=%s", root) == -1)
+                cmdline = NULL;
         } else if (extra) {
             cmdline = strdup(extra);
         }
-- 
2.39.5