From: Paul Durrant <paul.durrant@citrix.com>
Date: Wed, 17 Aug 2016 13:32:52 +0000 (+0100)
Subject: Create, rather than open, the RequestKey
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=5ec87e25a7139a8e5e905f2b65026de1d68c7c6f;p=people%2Fpauldu%2Fxenvif.git

Create, rather than open, the RequestKey

It's possible that, on upgrade, XENVIF is installed before XENBUS and so
the RequestKey may not exist.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
---

diff --git a/src/xenvif/driver.c b/src/xenvif/driver.c
index db17f2e..ded7138 100644
--- a/src/xenvif/driver.c
+++ b/src/xenvif/driver.c
@@ -142,7 +142,7 @@ DriverGetAddressesKey(
     return __DriverGetAddressesKey();
 }
 
-#define MAXNAMELEN  128
+#define MAXNAMELEN  1024
 
 static FORCEINLINE VOID
 __DriverRequestReboot(
@@ -172,10 +172,10 @@ __DriverRequestReboot(
                                 &Ansi[0]);
     ASSERT(NT_SUCCESS(status));
 
-    status = RegistryOpenSubKey(NULL,
-                                RequestKeyName,
-                                KEY_ALL_ACCESS,
-                                &RequestKey);
+    status = RegistryCreateSubKey(NULL,
+                                  RequestKeyName,
+                                  REG_OPTION_NON_VOLATILE,
+                                  &RequestKey);
     if (!NT_SUCCESS(status))
         goto fail2;