ShellPkg/Edit: Handle memory allocation failure

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

1 files changed, 20 insertions, 21 deletions

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
index acd8512..efe0df0 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
@@ -1,7 +1,7 @@
 /** @file

   Implements filebuffer interface functions.

 

-  Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved. <BR>

+  Copyright (c) 2005 - 2016, Intel Corporation. All rights reserved. <BR>

   This program and the accompanying materials

   are licensed and made available under the terms and conditions of the BSD License

   which accompanies this distribution.  The full text of the license may be found at

@@ -505,29 +505,28 @@ FileBufferPrintLine (
 

   BufLen = (MainEditor.ScreenSize.Column + 1) * sizeof (CHAR16);

   PrintLine = AllocatePool (BufLen);

-  ASSERT (PrintLine != NULL);

-

-  StrnCpyS (PrintLine, BufLen/sizeof(CHAR16), Buffer, MIN(Limit, MainEditor.ScreenSize.Column));

-  for (; Limit < MainEditor.ScreenSize.Column; Limit++) {

-    PrintLine[Limit] = L' ';

-  }

-

-  PrintLine[MainEditor.ScreenSize.Column] = CHAR_NULL;

-

-  PrintLine2 = AllocatePool (BufLen * 2);

-  ASSERT (PrintLine2 != NULL);

+  if (PrintLine != NULL) {

+    StrnCpyS (PrintLine, BufLen/sizeof(CHAR16), Buffer, MIN(Limit, MainEditor.ScreenSize.Column));

+    for (; Limit < MainEditor.ScreenSize.Column; Limit++) {

+      PrintLine[Limit] = L' ';

+    }

 

-  ShellCopySearchAndReplace(PrintLine, PrintLine2, BufLen * 2, L"%", L"^%", FALSE, FALSE);

+    PrintLine[MainEditor.ScreenSize.Column] = CHAR_NULL;

 

-  ShellPrintEx (

-    0,

-    (INT32)Row - 1,

-    L"%s",

-    PrintLine2

-    );

+    PrintLine2 = AllocatePool (BufLen * 2);

+    if (PrintLine2 != NULL) {

+      ShellCopySearchAndReplace(PrintLine, PrintLine2, BufLen * 2, L"%", L"^%", FALSE, FALSE);

 

-  FreePool (PrintLine);

-  FreePool (PrintLine2);

+      ShellPrintEx (

+        0,

+        (INT32)Row - 1,

+        L"%s",

+        PrintLine2

+        );

+      FreePool (PrintLine2);

+    }

+    FreePool (PrintLine);

+  }

 

   return EFI_SUCCESS;

 }