[PATCH 2/3] Add logging for XenFilt AddDevice.

[Martin Harvey <Martin.Harvey@xxxxxxxxxx>]

Recent releases of Windows (10 and 11 in particular) allow
online edition updates which involve a driver migration step,
which occurs in SAFEBOOT mode.

In some rare cases, this step may fail (for a variety of reasons).
This additional logging added to debug such upgrade cases.

Signed-Off-By: Martin Harvey <martin.harvey@xxxxxxxxxx>
---
 src/xenfilt/driver.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/xenfilt/driver.c b/src/xenfilt/driver.c
index e9e6673..f131282 100644
--- a/src/xenfilt/driver.c
+++ b/src/xenfilt/driver.c
@@ -723,6 +723,19 @@ fail1:
     return status;
 }
 
+static FORCEINLINE PCHAR
+__EmulatedTypeName(
+    IN  XENFILT_EMULATED_OBJECT_TYPE    Type
+    )
+{
+    switch (Type) {
+    case XENFILT_EMULATED_OBJECT_TYPE_UNKNOWN:  return "UNKNOWN";
+    case XENFILT_EMULATED_OBJECT_TYPE_PCI:      return "PCI";
+    case XENFILT_EMULATED_OBJECT_TYPE_IDE:      return "IDE";
+    default:                                    return "InvalidType";
+    }
+}
+
 static XENFILT_EMULATED_OBJECT_TYPE
 DriverGetEmulatedType(
     IN  PCHAR                       Id
@@ -804,6 +817,10 @@ DriverAddDevice(
         }
     }
 
+    Info("%p %s\n",
+         PhysicalDeviceObject,
+         __EmulatedTypeName(Type));
+
     status = STATUS_SUCCESS;
     if (Type == XENFILT_EMULATED_OBJECT_TYPE_UNKNOWN)
         goto done;
-- 
2.25.0.windows.1