Cd - add more input verification.

[mirror_edk2.git] / ShellPkg / Include / ShellBase.h

diff --git a/ShellPkg/Include/ShellBase.h b/ShellPkg/Include/ShellBase.h
index b7180b299821d1a076a5b46371de2f9691a3bc5c..d005544bcdc734027308c10feefc3aca40503892 100644 (file)
--- a/ShellPkg/Include/ShellBase.h
+++ b/ShellPkg/Include/ShellBase.h
@@ -1,7 +1,7 @@
 /** @file\r
   Root include file for Shell Package modules that utilize the SHELL_RETURN type\r
 \r
-  Copyright (c) 2009-2010, Intel Corporation.All rights reserved.<BR>\r
+  Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r
   This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
   which accompanies this distribution.  The full text of the license may be found at\r
@@ -12,9 +12,21 @@
 \r
 **/\r
 \r
-#if !defined(__SHELL_BASE__)\r
+#ifndef __SHELL_BASE__\r
 #define __SHELL_BASE__\r
 \r
+typedef VOID *SHELL_FILE_HANDLE;\r
+\r
+#ifndef SHELL_FREE_NON_NULL\r
+#define SHELL_FREE_NON_NULL(Pointer)  \\r
+  do {                                \\r
+    if ((Pointer) != NULL) {          \\r
+      FreePool((Pointer));            \\r
+      (Pointer) = NULL;               \\r
+    }                                 \\r
+  } while(FALSE)\r
+#endif //SHELL_FREE_NON_NULL\r
+\r
 typedef enum {\r
 ///\r
 /// The operation completed successfully.\r
@@ -60,7 +72,7 @@ SHELL_NOT_READY             = 6,
 SHELL_DEVICE_ERROR          = 7,\r
 \r
 ///\r
-/// The device can not be written to.\r
+/// The device cannot be written to.\r
 ///\r
 SHELL_WRITE_PROTECTED       = 8,\r
 \r