[BOOTMGFW]

- Hey Arch, your buddies gave you ETFS support for native EFI boot, of course reading sector 0 is all zeroes, you're not on FAT, you idiot! ETFS has data at sector 16 and 17.
- Implement beginning of ETFS support. We correctly mount the reactOS boot cd as ETFS and open the root directory entry!

svn path=/trunk/; revision=69181

diff --git a/reactos/boot/environ/CMakeLists.txt b/reactos/boot/environ/CMakeLists.txt
index 3d8b77c..f5bf508 100644 (file)
--- a/reactos/boot/environ/CMakeLists.txt
+++ b/reactos/boot/environ/CMakeLists.txt
@@ -20,6 +20,7 @@ list(APPEND BOOTLIB_SOURCE
      lib/mm/descriptor.c
      lib/platform/time.c
      lib/io/blkcache.c
+     lib/io/etfs.c
      lib/io/io.c
      lib/io/device.c
      lib/io/file.c

diff --git a/reactos/boot/environ/include/bl.h b/reactos/boot/environ/include/bl.h
index 0a444cf..baace9c 100644 (file)
--- a/reactos/boot/environ/include/bl.h
+++ b/reactos/boot/environ/include/bl.h
@@ -269,9 +269,9 @@ struct _BL_FILE_ENTRY;
 typedef
 NTSTATUS
 (*PBL_FILE_OPEN) (
-    _In_ struct _BL_FILE_ENTRY* ParentFileEntry,
+    _In_ struct _BL_FILE_ENTRY* Directory,
     _In_ PWCHAR FileName,
-    _In_ ULONG OpenFlags,
+    _In_ ULONG Flags,
     _Out_ struct _BL_FILE_ENTRY** FileEntry
     );
 
@@ -758,16 +758,17 @@ typedef struct _BL_FILE_CALLBACKS
 
 typedef struct _BL_FILE_ENTRY
 {
-    ULONG ReferenceCount;
-    ULONG FileId;
+    PWCHAR FilePath;
     ULONG DeviceId;
+    ULONG FileId;
     ULONG Flags;
-    PWCHAR FilePath;
+    ULONG ReferenceCount;
     ULONG Unknown;
-    ULONG Unknown1;
-    ULONG Unknown2;
+    ULONGLONG Unknown1;
+    ULONGLONG Unknown2;
     BL_FILE_CALLBACKS Callbacks;
-    PBL_FILE_DESTROY_CALLBACK DestroyCallback;
+    //PBL_FILE_DESTROY_CALLBACK DestroyCallback;
+    PVOID FsSpecificData;
 } BL_FILE_ENTRY, *PBL_FILE_ENTRY;
 
 typedef struct _BL_FILE_SYSTEM_ENTRY
@@ -1225,6 +1226,18 @@ FatMount (
     _Out_ PBL_FILE_ENTRY* FileEntry
     );
 
+NTSTATUS
+EtfsInitialize (
+    VOID
+    );
+
+NTSTATUS
+EtfsMount (
+    _In_ ULONG DeviceId,
+    _In_ ULONG Unknown,
+    _Out_ PBL_FILE_ENTRY* FileEntry
+    );
+
 /* UTILITY ROUTINES **********************************************************/
 
 EFI_STATUS

diff --git a/reactos/boot/environ/lib/io/device.c b/reactos/boot/environ/lib/io/device.c
index 4b2be5e..fdaf14e 100644 (file)
--- a/reactos/boot/environ/lib/io/device.c
+++ b/reactos/boot/environ/lib/io/device.c
@@ -130,8 +130,8 @@ BlockIoFirmwareRead (
             break;
         }
 
-        EfiPrintf(L"EFI Reading BLOCK %d off media %lx (%d blocks)\r\n",
-                 Block, BlockProtocol->Media->MediaId, BlockCount);
+        //EfiPrintf(L"EFI Reading BLOCK %d off media %lx (%d blocks)\r\n",
+                 //Block, BlockProtocol->Media->MediaId, BlockCount);
         EfiStatus = BlockProtocol->ReadBlocks(BlockProtocol,
                                               BlockProtocol->Media->MediaId,
                                               Block,
@@ -139,8 +139,8 @@ BlockIoFirmwareRead (
                                               Buffer);
         if (EfiStatus == EFI_SUCCESS)
         {
-            EfiPrintf(L"EFI Read complete into buffer\r\n");
-            EfiPrintf(L"Buffer data: %lx %lx %lx %lx\r\n", *(PULONG)Buffer, *((PULONG)Buffer + 1), *((PULONG)Buffer + 2), *((PULONG)Buffer + 3));
+            //EfiPrintf(L"EFI Read complete into buffer\r\n");
+            //EfiPrintf(L"Buffer data: %lx %lx %lx %lx\r\n", *(PULONG)Buffer, *((PULONG)Buffer + 1), *((PULONG)Buffer + 2), *((PULONG)Buffer + 3));
         }
 
         if (OldMode != 1)

diff --git a/reactos/boot/environ/lib/io/etfs.c b/reactos/boot/environ/lib/io/etfs.c
new file mode 100644 (file)
index 0000000..fe8d8db
--- /dev/null
+++ b/reactos/boot/environ/lib/io/etfs.c
@@ -0,0 +1,433 @@
+/*
+ * COPYRIGHT:       See COPYING.ARM in the top level directory
+ * PROJECT:         ReactOS UEFI Boot Library
+ * FILE:            boot/environ/lib/io/etfs.c
+ * PURPOSE:         Boot Library El Torito File System Management Routines
+ * PROGRAMMER:      Alex Ionescu (alex.ionescu@reactos.org)
+ */
+
+/* INCLUDES ******************************************************************/
+
+#include "bl.h"
+#include "../drivers/filesystems/cdfs_new/cd.h"
+typedef struct _RAW_ET_VD
+{
+    UCHAR BootIndicator;
+    UCHAR StandardId[5];
+    UCHAR Version;
+    UCHAR SystemId[32];
+    UCHAR Reserved[32];
+    ULONG BootCatalogOffset;
+    UCHAR Padding[1973];
+} RAW_ET_VD, *PRAW_ET_VD;
+
+/* DATA VARIABLES ************************************************************/
+
+typedef struct _BL_ETFS_CONTEXT
+{
+    ULONG RootDirOffset;
+    ULONG RootDirSize;
+    ULONG BlockSize;
+    ULONG VolumeSize;
+    BOOLEAN IsIso;
+    PRAW_ISO_VD MemoryBlock;
+    ULONG Offset;
+} BL_ETFS_CONTEXT, *PBL_ETFS_CONTEXT;
+
+typedef struct _BL_ETFS_FILE
+{
+    ULONG Flags;
+    ULONG DeviceId;
+    ULONG Offset;
+    ULONG Unknown;
+    ULONGLONG Size;
+    PWCHAR FsName;
+} BL_ETFS_FILE, *PBL_ETFS_FILE;
+
+ULONG EtfsDeviceTableEntries;
+PVOID* EtfsDeviceTable;
+
+NTSTATUS
+EtfsOpen (
+    _In_ PBL_FILE_ENTRY Directory,
+    _In_ PWCHAR FileName,
+    _In_ ULONG Flags,
+    _Out_ PBL_FILE_ENTRY *FileEntry
+    );
+
+BL_FILE_CALLBACKS EtfsFunctionTable =
+{
+    EtfsOpen,
+};
+
+/* FUNCTIONS *****************************************************************/
+
+NTSTATUS
+EtfsOpen (
+    _In_ PBL_FILE_ENTRY Directory,
+    _In_ PWCHAR FileName,
+    _In_ ULONG Flags, 
+    _Out_ PBL_FILE_ENTRY *FileEntry
+    )
+{
+    EfiPrintf(L"Attempting to open file %s in directory %s. Not yet supported\r\n", FileName, Directory->FilePath);
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+NTSTATUS
+EtfspCheckCdfs (
+    _In_ PBL_ETFS_CONTEXT EtfsContext,
+    _In_ ULONG DeviceId,
+    _Out_ PRAW_ISO_VD *VolumeDescriptor,
+    _Out_ PBOOLEAN VolumeIsIso
+    )
+{
+    EfiPrintf(L"Raw Cdfs not implemented\r\n");
+    return STATUS_NOT_IMPLEMENTED;
+}
+
+NTSTATUS
+EtfspCheckEtfs (
+    _In_ PBL_ETFS_CONTEXT EtfsContext,
+    _In_ ULONG DeviceId,
+    _Out_ PRAW_ISO_VD *VolumeDescriptor,
+    _Out_ PBOOLEAN VolumeIsIso
+    )
+{
+    PRAW_ISO_VD IsoVd;
+    PRAW_ET_VD EtVd;
+    NTSTATUS Status;
+    BOOLEAN IsIso;
+    BL_DEVICE_INFORMATION DeviceInformation;
+    ULONG Unknown, BytesRead;
+    ANSI_STRING CompareString, String;
+
+    /* Save our static buffer pointer */
+    IsoVd = EtfsContext->MemoryBlock;
+    EtVd = (PRAW_ET_VD)IsoVd;
+
+    /* First, read the El Torito Volume Descriptor */
+    BlDeviceGetInformation(DeviceId, &DeviceInformation);
+    Unknown = DeviceInformation.BlockDeviceInfo.Unknown;
+    DeviceInformation.BlockDeviceInfo.Unknown |= 1;
+    BlDeviceSetInformation(DeviceId, &DeviceInformation);
+    Status = BlDeviceReadAtOffset(DeviceId,
+                                  CD_SECTOR_SIZE,
+                                  (FIRST_VD_SECTOR + 1) * CD_SECTOR_SIZE,
+                                  EtfsContext->MemoryBlock,
+                                  &BytesRead);
+    DeviceInformation.BlockDeviceInfo.Unknown = Unknown;
+    BlDeviceSetInformation(DeviceId, &DeviceInformation);
+    if (!NT_SUCCESS(Status))
+    {
+        EfiPrintf(L" read failed\r\n");
+        return Status;
+    }
+
+    /* Remember that's where we last read */
+    EtfsContext->Offset = (FIRST_VD_SECTOR + 1) * CD_SECTOR_SIZE;
+
+    /* Check if it's EL TORITO! */
+    RtlInitString(&String, "EL TORITO SPECIFICATION");
+    CompareString.Buffer = (PCHAR)EtVd->SystemId;
+    CompareString.Length = 23;
+    CompareString.MaximumLength = 23;
+    if (!RtlEqualString(&CompareString, &String, TRUE))
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* Check the version and boot indicator */
+    if ((EtVd->Version != 1) || (EtVd->BootIndicator))
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* Check if it has the CD0001 identifier */
+    RtlInitString(&String, ISO_VOL_ID);
+    CompareString.Buffer = (PCHAR)EtVd->StandardId;
+    CompareString.Length = 5;
+    CompareString.MaximumLength = 5;
+    if (!RtlEqualString(&CompareString, &String, TRUE))
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* Step two, we now want to read the ISO Volume Descriptor */
+    DeviceInformation.BlockDeviceInfo.Unknown |= 1u;
+    BlDeviceSetInformation(DeviceId, &DeviceInformation);
+    Status = BlDeviceReadAtOffset(DeviceId,
+                                  CD_SECTOR_SIZE,
+                                  FIRST_VD_SECTOR * CD_SECTOR_SIZE,
+                                  EtfsContext->MemoryBlock,
+                                  &BytesRead);
+    DeviceInformation.BlockDeviceInfo.Unknown = Unknown;
+    BlDeviceSetInformation(DeviceId, &DeviceInformation);
+    if (!NT_SUCCESS(Status))
+    {
+        return Status;
+    }
+
+    /* Remember where we left off */
+    EtfsContext->Offset = FIRST_VD_SECTOR  * CD_SECTOR_SIZE;
+
+    /* This should also say CD0001 */
+    CompareString.Buffer = (PCHAR)IsoVd->StandardId;
+    CompareString.Length = 5;
+    CompareString.MaximumLength = 5;
+    IsIso = RtlEqualString(&CompareString, &String, TRUE);
+    if (!IsIso)
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* And should be a version we support */
+    if ((IsoVd->Version != VERSION_1) || (IsoVd->DescType != VD_PRIMARY))
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
+
+    /* Return back to the caller */
+    *VolumeDescriptor = IsoVd;
+    *VolumeIsIso = IsIso;
+    EfiPrintf(L"Recognized!!!\r\n");
+    return STATUS_SUCCESS;
+}
+
+VOID
+EtfspGetDirectoryInfo (
+    _In_ PBL_ETFS_CONTEXT EtfsContext,
+    _In_ PRAW_DIR_REC DirEntry,
+    _Out_ PULONG FileOffset,
+    _Out_ PULONG FileSize,
+    _Out_opt_ PBOOLEAN IsDirectory
+    )
+{
+    ULONG SectorOffset;
+    BOOLEAN IsDir;
+
+    *FileOffset = *(PULONG)DirEntry->FileLoc * EtfsContext->BlockSize;
+    *FileOffset += (DirEntry->XarLen * EtfsContext->BlockSize);
+
+    SectorOffset = ALIGN_DOWN_BY(*FileOffset, CD_SECTOR_SIZE);
+
+    *FileSize = *(PULONG)DirEntry->DataLen;
+
+    IsDir = DE_FILE_FLAGS(EtfsContext->IsIso, DirEntry) & ISO_ATTR_DIRECTORY;
+    if (IsDir)
+    {
+        *FileSize += ALIGN_UP_BY(SectorOffset, CD_SECTOR_SIZE) - SectorOffset;
+    }
+
+    if (IsDirectory)
+    {
+        *IsDirectory = IsDir;
+    }
+}
+
+NTSTATUS
+EtfspDeviceContextDestroy (
+    _In_ PBL_ETFS_CONTEXT EtfsContext
+    )
+{
+    if (EtfsContext->MemoryBlock)
+    {
+        BlMmFreeHeap(EtfsContext->MemoryBlock);
+    }
+    BlMmFreeHeap(EtfsContext);
+    return 0;
+}
+
+NTSTATUS
+EtfspCreateContext (
+    _In_ ULONG DeviceId,
+    _Out_ PBL_ETFS_CONTEXT *EtfsContext
+    )
+{
+    PBL_ETFS_CONTEXT NewContext;
+    PVOID MemoryBlock;
+    NTSTATUS Status;
+    BOOLEAN IsIso;
+    PRAW_ISO_VD RawVd;
+
+    NewContext = (PBL_ETFS_CONTEXT)BlMmAllocateHeap(sizeof(*NewContext));
+    if (!NewContext)
+    {
+        return STATUS_NO_MEMORY;
+    }
+    RtlZeroMemory(NewContext, sizeof(*NewContext));
+
+    MemoryBlock = BlMmAllocateHeap(CD_SECTOR_SIZE);
+    NewContext->MemoryBlock = MemoryBlock;
+    if (!MemoryBlock)
+    {
+        Status = STATUS_NO_MEMORY;
+        goto Quickie;
+    }
+
+    Status = EtfspCheckEtfs(NewContext, DeviceId, &RawVd, &IsIso);
+    if (!NT_SUCCESS(Status))
+    {
+        EfiPrintf(L"Drive not EDFS. Checking for CDFS: %lx\r\n");
+        Status = EtfspCheckCdfs(NewContext, DeviceId, &RawVd, &IsIso);
+    }
+
+    if (!NT_SUCCESS(Status))
+    {
+        EfiPrintf(L"Drive not CDFS. Failing: %lx\r\n");
+        goto Quickie;
+    }
+
+    NewContext->IsIso = IsIso;
+    NewContext->BlockSize = RVD_LB_SIZE(RawVd, IsIso);
+    NewContext->VolumeSize = RVD_VOL_SIZE(RawVd, IsIso);
+
+    EtfspGetDirectoryInfo(NewContext,
+                          (PRAW_DIR_REC)RVD_ROOT_DE(RawVd, IsIso),
+                          &NewContext->RootDirOffset,
+                          &NewContext->RootDirSize,
+                          0);
+
+Quickie:
+    EtfspDeviceContextDestroy(NewContext);
+    NewContext = NULL;
+
+    *EtfsContext = NewContext;
+    return Status;
+}
+
+NTSTATUS
+EtfspDeviceTableDestroyEntry (
+    _In_ PBL_ETFS_CONTEXT EtfsContext,
+    _In_ ULONG Index
+    )
+{
+    EtfspDeviceContextDestroy(EtfsContext);
+    EtfsDeviceTable[Index] = NULL;
+
+    return STATUS_SUCCESS;
+}
+
+NTSTATUS
+EtfsMount (
+    _In_ ULONG DeviceId,
+    _In_ ULONG Unknown,
+    _Out_ PBL_FILE_ENTRY* FileEntry
+    )
+{
+    PBL_ETFS_CONTEXT EtfsContext = NULL;
+    PBL_FILE_ENTRY RootEntry;
+    NTSTATUS Status;
+    PBL_ETFS_FILE EtfsFile;
+
+    EfiPrintf(L"Trying to mount as ETFS...\r\n");
+
+    Status = EtfspCreateContext(DeviceId, &EtfsContext);
+    if (!NT_SUCCESS(Status))
+    {
+        EfiPrintf(L"ETFS context failed: %lx\r\n");
+        return Status;
+    }
+
+    Status = BlTblSetEntry(&EtfsDeviceTable,
+                           &EtfsDeviceTableEntries,
+                           EtfsContext,
+                           &DeviceId,
+                           TblDoNotPurgeEntry);
+    if (!NT_SUCCESS(Status))
+    {
+        EtfspDeviceContextDestroy(EtfsContext);
+        return Status;
+    }
+
+    RootEntry = BlMmAllocateHeap(sizeof(*RootEntry));
+    if (!RootEntry)
+    {
+        Status = STATUS_NO_MEMORY;
+        goto Quickie;
+    }
+
+    RtlZeroMemory(RootEntry, sizeof(*RootEntry));
+
+    RootEntry->FilePath = BlMmAllocateHeap(4);
+    if (!RootEntry->FilePath)
+    {
+        Status = STATUS_NO_MEMORY;
+        goto Quickie;
+    }
+
+    wcsncpy(RootEntry->FilePath, L"\\", 1);
+
+    RootEntry->DeviceId = DeviceId;
+    RtlCopyMemory(&RootEntry->Callbacks,
+                  &EtfsFunctionTable,
+                  sizeof(RootEntry->Callbacks));
+
+    EtfsFile = (PBL_ETFS_FILE)BlMmAllocateHeap(sizeof(*EtfsFile));
+    if (!EtfsFile)
+    {
+        Status = STATUS_NO_MEMORY;
+        goto Quickie;
+    }
+
+    RootEntry->Flags |= 0x10000;
+
+    RtlZeroMemory(EtfsFile, sizeof(*EtfsFile));
+    RootEntry->FsSpecificData = EtfsFile;
+    EtfsFile->DeviceId = DeviceId;
+    EtfsFile->Flags |= 1;
+    EtfsFile->Offset = EtfsContext->RootDirOffset;
+    EtfsFile->Unknown = 0;
+    EtfsFile->Size = EtfsContext->RootDirSize;
+    EtfsFile->FsName = L"cdfs";
+    *FileEntry = RootEntry;
+
+    return STATUS_SUCCESS;
+
+Quickie:
+    if (RootEntry->FilePath)
+    {
+        BlMmFreeHeap(RootEntry->FilePath);
+    }
+    if (RootEntry->FsSpecificData)
+    {
+        BlMmFreeHeap(RootEntry->FsSpecificData);
+    }
+    if (RootEntry)
+    {
+        BlMmFreeHeap(RootEntry);
+    }
+
+    EtfspDeviceTableDestroyEntry(EtfsContext, DeviceId);
+
+    return Status;
+}
+
+NTSTATUS
+EtfsInitialize (
+    VOID
+    )
+{
+    NTSTATUS Status;
+
+    /* Allocate the device table with 2 entries*/
+    EtfsDeviceTableEntries = 2;
+    EtfsDeviceTable = BlMmAllocateHeap(sizeof(PBL_FILE_ENTRY) *
+                                       EtfsDeviceTableEntries);
+    if (EtfsDeviceTable)
+    {
+        /* Zero it out */
+        RtlZeroMemory(EtfsDeviceTable,
+                      sizeof(PBL_FILE_ENTRY) * EtfsDeviceTableEntries);
+        Status = STATUS_SUCCESS;
+    }
+    else
+    {
+        /* No memory, fail */
+        Status = STATUS_NO_MEMORY;
+    }
+
+    /* Return back to caller */
+    return Status;
+}
+

diff --git a/reactos/boot/environ/lib/io/fat.c b/reactos/boot/environ/lib/io/fat.c
index 717ac4f..28ed729 100644 (file)
--- a/reactos/boot/environ/lib/io/fat.c
+++ b/reactos/boot/environ/lib/io/fat.c
@@ -43,7 +43,6 @@ FatMount (
     BlDeviceSetInformation(DeviceId, &DeviceInformation);
 
     /* Read the boot sector */
-    EfiPrintf(L"Reading fat boot sector...\r\n");
     Status = BlDeviceReadAtOffset(DeviceId,
                                   sizeof(FatBootSector),
                                   0,
@@ -61,7 +60,11 @@ FatMount (
 
     FatUnpackBios(&BiosBlock, &FatBootSector.PackedBpb);
 
-    EfiPrintf(L"Drive read\r\n");
+    /* For now, quickly fail if this isn't FAT */
+    if (FatBootSector.Jump[0] != 0xE9)
+    {
+        return STATUS_UNSUCCESSFUL;
+    }
 
     EfiPrintf(L"Jump: %lx Bytes Per Sector: %d Sectors Per Cluster: %d Reserved: %d Fats: %d Sectors: %d Large Sectors: %d Media: %lx RootEntries: %d\r\n",
         FatBootSector.Jump[0],
@@ -74,7 +77,6 @@ FatMount (
         BiosBlock.Media,
         BiosBlock.RootEntries);
 
-    EfiStall(3000000);
     return STATUS_NOT_IMPLEMENTED;
 }
 

diff --git a/reactos/boot/environ/lib/io/file.c b/reactos/boot/environ/lib/io/file.c
index fcf2564..62a12b7 100644 (file)
--- a/reactos/boot/environ/lib/io/file.c
+++ b/reactos/boot/environ/lib/io/file.c
@@ -23,6 +23,14 @@ BL_FILE_SYSTEM_REGISTRATION_TABLE FatRegisterFunctionTable =
     FatMount,
     NULL
 };
+BL_FILE_SYSTEM_REGISTRATION_TABLE EtfsRegisterFunctionTable =
+{
+    EtfsInitialize,
+    NULL,
+    EtfsMount,
+    NULL
+};
+
 
 extern ULONG DmTableEntries;
 extern PVOID* DmDeviceTable;
@@ -106,7 +114,7 @@ FileTableCompareWithSubsetAttributes (
     PBL_FILE_ENTRY FileEntry = (PBL_FILE_ENTRY)Entry;
     ULONG DeviceId = *(PULONG)Argument1;
     PWCHAR FilePath = (PWCHAR)Argument2;
-    ULONG OpenFlags = *(PULONG)Argument3;
+    ULONG Flags = *(PULONG)Argument3;
     ULONG Unknown = *(PULONG)Argument4;
     BOOLEAN Found;
 
@@ -114,9 +122,9 @@ FileTableCompareWithSubsetAttributes (
 
     if ((FileEntry->DeviceId == DeviceId) && !(_wcsicmp(FileEntry->FilePath, FilePath)) && (FileEntry->Unknown == Unknown))
     {
-        if ((!(OpenFlags & 1) || (FileEntry->Flags & 2)) && (!(OpenFlags & 2) || (FileEntry->Flags & 4)))
+        if ((!(Flags & 1) || (FileEntry->Flags & 2)) && (!(Flags & 2) || (FileEntry->Flags & 4)))
         {
-            if ((!(OpenFlags & 4) || (FileEntry->Flags & 0x10000)) && ((OpenFlags & 4) || !(FileEntry->Flags & 0x10000)))
+            if ((!(Flags & 4) || (FileEntry->Flags & 0x10000)) && ((Flags & 4) || !(FileEntry->Flags & 0x10000)))
             {
                 Found = TRUE;
             }
@@ -137,7 +145,7 @@ FileTableCompareWithSameAttributes (
     PBL_FILE_ENTRY FileEntry = (PBL_FILE_ENTRY)Entry;
     ULONG DeviceId = *(PULONG)Argument1;
     PWCHAR FilePath = (PWCHAR)Argument2;
-    ULONG OpenFlags = *(PULONG)Argument3;
+    ULONG Flags = *(PULONG)Argument3;
     ULONG Unknown = *(PULONG)Argument4;
     BOOLEAN Found;
 
@@ -145,9 +153,9 @@ FileTableCompareWithSameAttributes (
 
     if ((FileEntry->DeviceId == DeviceId) && !(_wcsicmp(FileEntry->FilePath, FilePath)) && (FileEntry->Unknown == Unknown))
     {
-        if ((!(OpenFlags & 1) || (FileEntry->Flags & 2)) && ((OpenFlags & 1) || !(FileEntry->Flags & 2)) && (!(OpenFlags & 2) || (FileEntry->Flags & 4)) && ((OpenFlags & 2) || !(FileEntry->Flags & 4)))
+        if ((!(Flags & 1) || (FileEntry->Flags & 2)) && ((Flags & 1) || !(FileEntry->Flags & 2)) && (!(Flags & 2) || (FileEntry->Flags & 4)) && ((Flags & 2) || !(FileEntry->Flags & 4)))
         {
-            if ((!(OpenFlags & 4) || (FileEntry->Flags & 0x10000)) && ((OpenFlags & 4) || !(FileEntry->Flags & 0x10000)))
+            if ((!(Flags & 4) || (FileEntry->Flags & 0x10000)) && ((Flags & 4) || !(FileEntry->Flags & 0x10000)))
             {
                 Found = TRUE;
             }
@@ -240,7 +248,7 @@ NTSTATUS
 FileIoOpen (
     _In_ ULONG DeviceId,
     _In_ PWCHAR FileName,
-    _In_ ULONG OpenFlags,
+    _In_ ULONG Flags,
     _In_ ULONG Unknown,
     _In_ PBL_TBL_LOOKUP_ROUTINE CompareRoutine,
     _Out_ PBL_FILE_ENTRY *ReturnFileEntry
@@ -256,7 +264,7 @@ FileIoOpen (
 
     ParentDirectoryEntry = NULL;
     FileNameCopy = NULL;
-    OpenFlags |= 1;
+    Flags |= 1;
     ParentFileName = NULL;
     Status = STATUS_SUCCESS;
 
@@ -271,13 +279,13 @@ FileIoOpen (
         return STATUS_ACCESS_DENIED;
     }
 
-    if ((OpenFlags & 1) && (!(DeviceEntry->Flags & 1) || !(DeviceEntry->Flags & 2)))
+    if ((Flags & 1) && (!(DeviceEntry->Flags & 1) || !(DeviceEntry->Flags & 2)))
     {
         EfiPrintf(L"Access denied\r\n");
         return STATUS_ACCESS_DENIED;
     }
 
-    if ((OpenFlags & 2) && (!(DeviceEntry->Flags & 1) || !(DeviceEntry->Flags & 4)))
+    if ((Flags & 2) && (!(DeviceEntry->Flags & 1) || !(DeviceEntry->Flags & 4)))
     {
         EfiPrintf(L"Access denied2\r\n");
         return STATUS_ACCESS_DENIED;
@@ -289,7 +297,7 @@ FileIoOpen (
                                                 CompareRoutine,
                                                 &DeviceId,
                                                 FileName,
-                                                &OpenFlags,
+                                                &Flags,
                                                 &Unknown);
     if (FileEntry)
     {
@@ -326,7 +334,7 @@ FileIoOpen (
 
         Status = ParentDirectoryEntry->Callbacks.Open(ParentDirectoryEntry,
                                                       FileNameCopy,
-                                                      OpenFlags,
+                                                      Flags,
                                                       &FileEntry);
     }
     else
@@ -350,7 +358,7 @@ FileIoOpen (
             NextEntry = NextEntry->Flink;
         }
 
-        FileNameCopy = 0;
+        FileNameCopy = NULL;
     }
 
     if (!NT_SUCCESS(Status))
@@ -361,12 +369,12 @@ FileIoOpen (
 
     FileEntry->Unknown = Unknown;
 
-    if (OpenFlags & 1)
+    if (Flags & 1)
     {
         FileEntry->Flags |= 2u;
     }
     
-    if (OpenFlags & 2)
+    if (Flags & 2)
     {
         FileEntry->Flags |= 4u;
     }
@@ -385,6 +393,7 @@ FileIoOpen (
     ++DeviceEntry->ReferenceCount;
     Status = STATUS_SUCCESS;
 
+    EfiPrintf(L"File %s opened with ID: %lx\r\n", FileEntry->FilePath, FileId);
     FileEntry->FileId = FileId;
 
 FileOpened:
@@ -396,7 +405,7 @@ FileOpened:
 
     FileEntry->Flags |= 1;
     
-    if (OpenFlags & 0x10)
+    if (Flags & 0x10)
     {
         FileEntry->Flags |= 0x10;
     }
@@ -426,7 +435,7 @@ NTSTATUS
 BlFileOpen (
     _In_ ULONG DeviceId,
     _In_ PWCHAR FileName,
-    _In_ ULONG OpenFlags,
+    _In_ ULONG Flags,
     _Out_ PULONG FileId
     )
 {
@@ -437,7 +446,7 @@ BlFileOpen (
     if (!(FileName) ||
         (*FileName != OBJ_NAME_PATH_SEPARATOR) ||
         !(FileId) ||
-        !(OpenFlags & 3))
+        !(Flags & 3))
     {
         EfiPrintf(L"Invalid file options\r\n");
         return STATUS_INVALID_PARAMETER;
@@ -460,7 +469,7 @@ BlFileOpen (
 
     Status = FileIoOpen(DeviceId,
                         FileName,
-                        OpenFlags,
+                        Flags,
                         0,
                         FileTableCompareWithSameAttributes,
                         &FileEntry);
@@ -597,7 +606,7 @@ BlpFileInitialize (
                                            UdfsRegisterFunctionTable.Purge,
                                            0);
     }
-
+#endif
     if (NT_SUCCESS(Status))
     {
         /* Initialize El-Torito CDFS */
@@ -607,7 +616,6 @@ BlpFileInitialize (
                                            EtfsRegisterFunctionTable.Purge,
                                            0);
     }
-#endif
 
     /* Destroy the file manager if any of the file systems didn't initialize */
     if (!NT_SUCCESS(Status))