fix build breaks. and allow for new lists to be created.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8885 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 10 insertions, 2 deletions

diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
index 7b7533a327..54b6a43e03 100644
--- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c
+++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
@@ -1302,7 +1302,8 @@ InternalShellConvertFileListType (
   and will process '?' and '*' as such.  the list must be freed with a call to 

   ShellCloseFileMetaArg().

 

-  If you are NOT appending to an existing list *ListHead must be NULL.

+  If you are NOT appending to an existing list *ListHead must be NULL.  If 

+  *ListHead is NULL then it must be callee freed.

 

   @param Arg                    pointer to path string

   @param OpenMode               mode to open files with

@@ -1337,6 +1338,13 @@ ShellOpenFileMetaArg (
   // Check for UEFI Shell 2.0 protocols

   //

   if (mEfiShellProtocol != NULL) {

+    if (*ListHead == NULL) {

+      *ListHead = (EFI_SHELL_FILE_INFO*)AllocateZeroPool(sizeof(EFI_SHELL_FILE_INFO));

+      if (*ListHead == NULL) {

+        return (EFI_OUT_OF_RESOURCES);

+      }

+      InitializeListHead(&((*ListHead)->Link));

+    }    

     return (mEfiShellProtocol->OpenFileList(Arg, 

                                            OpenMode, 

                                            ListHead));

@@ -2162,4 +2170,4 @@ ShellPrintEx(
   FreePool(PostReplaceFormat2);

 

   return (Return);

-}
\ No newline at end of file
+}