[ACPICA]

[reactos.git] / reactos / drivers / bus / acpi / acpica / namespace / nsnames.c

diff --git a/reactos/drivers/bus/acpi/acpica/namespace/nsnames.c b/reactos/drivers/bus/acpi/acpica/namespace/nsnames.c
index d132d9e..0df136a 100644 (file)
--- a/reactos/drivers/bus/acpi/acpica/namespace/nsnames.c
+++ b/reactos/drivers/bus/acpi/acpica/namespace/nsnames.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2015, Intel Corp.
+ * Copyright (C) 2000 - 2017, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -100,14 +100,73 @@ AcpiNsGetPathnameLength (
     ACPI_SIZE               Size;
 
 
-    ACPI_FUNCTION_ENTRY ();
+    /* Validate the Node */
 
+    if (ACPI_GET_DESCRIPTOR_TYPE (Node) != ACPI_DESC_TYPE_NAMED)
+    {
+        ACPI_ERROR ((AE_INFO,
+            "Invalid/cached reference target node: %p, descriptor type %d",
+            Node, ACPI_GET_DESCRIPTOR_TYPE (Node)));
+        return (0);
+    }
 
     Size = AcpiNsBuildNormalizedPath (Node, NULL, 0, FALSE);
     return (Size);
 }
 
 
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiNsHandleToName
+ *
+ * PARAMETERS:  TargetHandle            - Handle of named object whose name is
+ *                                        to be found
+ *              Buffer                  - Where the name is returned
+ *
+ * RETURN:      Status, Buffer is filled with name if status is AE_OK
+ *
+ * DESCRIPTION: Build and return a full namespace name
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiNsHandleToName (
+    ACPI_HANDLE             TargetHandle,
+    ACPI_BUFFER             *Buffer)
+{
+    ACPI_STATUS             Status;
+    ACPI_NAMESPACE_NODE     *Node;
+    const char              *NodeName;
+
+
+    ACPI_FUNCTION_TRACE_PTR (NsHandleToName, TargetHandle);
+
+
+    Node = AcpiNsValidateHandle (TargetHandle);
+    if (!Node)
+    {
+        return_ACPI_STATUS (AE_BAD_PARAMETER);
+    }
+
+    /* Validate/Allocate/Clear caller buffer */
+
+    Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /* Just copy the ACPI name from the Node and zero terminate it */
+
+    NodeName = AcpiUtGetNodeName (Node);
+    ACPI_MOVE_NAME (Buffer->Pointer, NodeName);
+    ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
+
+    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%4.4s\n", (char *) Buffer->Pointer));
+    return_ACPI_STATUS (AE_OK);
+}
+
+
 /*******************************************************************************
  *
  * FUNCTION:    AcpiNsHandleToPathname
@@ -164,10 +223,6 @@ AcpiNsHandleToPathname (
 
     (void) AcpiNsBuildNormalizedPath (Node, Buffer->Pointer,
         RequiredSize, NoTrailing);
-    if (ACPI_FAILURE (Status))
-    {
-        return_ACPI_STATUS (Status);
-    }
 
     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X]\n",
         (char *) Buffer->Pointer, (UINT32) RequiredSize));