diff options
Diffstat (limited to 'DuetPkg/FSVariable/FileStorage.c')
| -rw-r--r-- | DuetPkg/FSVariable/FileStorage.c | 437 |
1 files changed, 0 insertions, 437 deletions
diff --git a/DuetPkg/FSVariable/FileStorage.c b/DuetPkg/FSVariable/FileStorage.c deleted file mode 100644 index d07c0bb25c..0000000000 --- a/DuetPkg/FSVariable/FileStorage.c +++ /dev/null @@ -1,437 +0,0 @@ -/*++
-
-Caution: This file is used for Duet platform only, do not use them in real platform.
-All variable code, variable metadata, and variable data used by Duet platform are on
-disk. They can be changed by user. BIOS is not able to protoect those.
-Duet trusts all meta data from disk. If variable code, variable metadata and variable
-data is modified in inproper way, the behavior is undefined.
-
-Copyright (c) 2006 - 2014, 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
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
-
- FileStorage.c
-
-Abstract:
-
- handles variable store/reads on file
-
-Revision History
-
---*/
-#include "FSVariable.h"
-
-VOID *mSFSRegistration;
-
-//
-// Prototypes
-//
-
-VOID
-EFIAPI
-OnVirtualAddressChangeFs (
- IN EFI_EVENT Event,
- IN VOID *Context
- );
-
-EFI_STATUS
-EFIAPI
-FileEraseStore(
- IN VARIABLE_STORAGE *This
- );
-
-EFI_STATUS
-EFIAPI
-FileWriteStore (
- IN VARIABLE_STORAGE *This,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN VOID *Buffer
- );
-
-EFI_STATUS
-OpenStore (
- IN EFI_DEVICE_PATH_PROTOCOL *Device,
- IN CHAR16 *FilePathName,
- IN UINT64 OpenMode,
- OUT EFI_FILE_PROTOCOL **File
- );
-
-//
-// Implementation below:
-//
-VOID
-FileClose (
- IN EFI_FILE_PROTOCOL *File
- )
-{
- EFI_STATUS Status;
-
- Status = File->Flush (File);
- ASSERT_EFI_ERROR (Status);
-
- Status = File->Close (File);
- ASSERT_EFI_ERROR (Status);
-}
-
-EFI_STATUS
-CheckStore (
- IN EFI_HANDLE SimpleFileSystemHandle,
- IN UINT32 VolumeId,
- OUT EFI_DEVICE_PATH_PROTOCOL **Device
- )
-{
-#define BLOCK_SIZE 0x200
-#define FAT16_VOLUME_ID_OFFSET 39
-#define FAT32_VOLUME_ID_OFFSET 67
- EFI_STATUS Status;
- EFI_BLOCK_IO_PROTOCOL *BlkIo;
- UINT8 BootSector[BLOCK_SIZE];
-
- *Device = NULL;
- Status = gBS->HandleProtocol (
- SimpleFileSystemHandle,
- &gEfiBlockIoProtocolGuid, // BlockIo should be supported if it supports SimpleFileSystem
- (VOID*)&BlkIo
- );
-
- if (EFI_ERROR (Status)) {
- goto ErrHandle;
- }
- if (!BlkIo->Media->MediaPresent) {
- DEBUG ((EFI_D_ERROR, "FileStorage: Media not present!\n"));
- Status = EFI_NO_MEDIA;
- goto ErrHandle;
- }
- if (BlkIo->Media->ReadOnly) {
- DEBUG ((EFI_D_ERROR, "FileStorage: Media is read-only!\n"));
- Status = EFI_ACCESS_DENIED;
- goto ErrHandle;
- }
-
- Status = BlkIo->ReadBlocks(
- BlkIo,
- BlkIo->Media->MediaId,
- 0,
- BLOCK_SIZE,
- BootSector
- );
- ASSERT_EFI_ERROR (Status);
- if ((*(UINT32 *) &BootSector[FAT16_VOLUME_ID_OFFSET] != VolumeId) &&
- (*(UINT32 *) &BootSector[FAT32_VOLUME_ID_OFFSET] != VolumeId)
- ) {
- Status = EFI_NOT_FOUND;
- goto ErrHandle;
- }
-
- *Device = DuplicateDevicePath (DevicePathFromHandle (SimpleFileSystemHandle));
- ASSERT (*Device != NULL);
-
-ErrHandle:
- return Status;
-}
-
-EFI_STATUS
-CheckStoreExists (
- IN EFI_DEVICE_PATH_PROTOCOL *Device
- )
-{
- EFI_HANDLE Handle;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
- EFI_STATUS Status;
-
- Status = gBS->LocateDevicePath (
- &gEfiSimpleFileSystemProtocolGuid,
- &Device,
- &Handle
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = gBS->HandleProtocol (
- Handle,
- &gEfiSimpleFileSystemProtocolGuid,
- (VOID **) &Volume
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- return EFI_SUCCESS;
-}
-
-// this routine is still running in BS period, no limitation
-// call FileInitStorage(), which load variable content file to memory
-// read the store_header, init store_header if it has not been inited (read sth. about format/heathy)
-// reclaim space using scratch memory
-
-VOID
-EFIAPI
-OnSimpleFileSystemInstall (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- EFI_STATUS Status;
- UINTN HandleSize;
- EFI_HANDLE Handle;
- EFI_DEVICE_PATH_PROTOCOL *Device;
- VS_DEV *Dev;
- EFI_FILE_PROTOCOL *File;
- UINTN NumBytes;
-
- Dev = (VS_DEV *) Context;
-
- if (VAR_FILE_DEVICEPATH (Dev) != NULL &&
- !EFI_ERROR (CheckStoreExists (VAR_FILE_DEVICEPATH (Dev)))
- ) {
- DEBUG ((EFI_D_ERROR, "FileStorage: Already mapped!\n"));
- return ;
- }
-
- while (TRUE) {
- HandleSize = sizeof (EFI_HANDLE);
- Status = gBS->LocateHandle (
- ByRegisterNotify,
- NULL,
- mSFSRegistration,
- &HandleSize,
- &Handle
- );
- if (EFI_ERROR (Status)) {
- return ;
- }
-
- Status = CheckStore (Handle, VAR_FILE_VOLUMEID (Dev), &Device);
- if (!EFI_ERROR (Status)) {
- break;
- }
- }
-
- VAR_FILE_DEVICEPATH (Dev) = Device;
- Status = OpenStore (
- VAR_FILE_DEVICEPATH (Dev),
- VAR_FILE_FILEPATH (Dev),
- EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ | EFI_FILE_MODE_CREATE,
- &File
- );
- ASSERT_EFI_ERROR (Status);
-
- NumBytes = Dev->Size;
- Status = File->Write (File, &NumBytes, VAR_DATA_PTR (Dev));
- ASSERT_EFI_ERROR (Status);
- FileClose (File);
- DEBUG ((EFI_D_ERROR, "FileStorage: Mapped to file!\n"));
-}
-
-EFI_STATUS
-FileStorageConstructor (
- OUT VARIABLE_STORAGE **VarStore,
- OUT EFI_EVENT_NOTIFY *GoVirtualEvent,
- IN EFI_PHYSICAL_ADDRESS NvStorageBase,
- IN UINTN Size,
- IN UINT32 VolumeId,
- IN CHAR16 *FilePath
- )
-{
- VS_DEV *Dev;
- EFI_STATUS Status;
- EFI_EVENT Event;
-
- Status = gBS->AllocatePool (EfiRuntimeServicesData, sizeof(VS_DEV), (VOID **) &Dev);
- ASSERT_EFI_ERROR (Status);
- ZeroMem (Dev, sizeof(VS_DEV));
-
- Dev->Signature = VS_DEV_SIGNATURE;
- Dev->Size = Size;
- VAR_DATA_PTR (Dev) = (UINT8 *) (UINTN) NvStorageBase;
- VAR_FILE_VOLUMEID (Dev) = VolumeId;
- StrCpy (VAR_FILE_FILEPATH (Dev), FilePath);
- Dev->VarStore.Erase = FileEraseStore;
- Dev->VarStore.Write = FileWriteStore;
-
- DEBUG ((EFI_D_ERROR, "FileStorageConstructor(0x%0x:0x%0x): added!\n", NvStorageBase, Size));
-
- // add notify on SFS's installation.
-
- Status = gBS->CreateEvent (
- EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- OnSimpleFileSystemInstall,
- Dev,
- &Event
- );
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->RegisterProtocolNotify (
- &gEfiSimpleFileSystemProtocolGuid,
- Event,
- &mSFSRegistration
- );
- ASSERT_EFI_ERROR (Status);
-
- *VarStore = &Dev->VarStore;
- *GoVirtualEvent = OnVirtualAddressChangeFs;
- return EFI_SUCCESS;
-}
-
-EFI_STATUS
-EFIAPI
-FileEraseStore(
- IN VARIABLE_STORAGE *This
- )
-{
- EFI_STATUS Status;
- VS_DEV *Dev;
- EFI_FILE_PROTOCOL *File;
- UINTN NumBytes;
-
- Status = EFI_SUCCESS;
- Dev = DEV_FROM_THIS(This);
-
- SetMem (VAR_DATA_PTR (Dev), Dev->Size, VAR_DEFAULT_VALUE);
-
- if (!EfiAtRuntime () && VAR_FILE_DEVICEPATH (Dev) != NULL) {
- Status = OpenStore (
- VAR_FILE_DEVICEPATH (Dev),
- VAR_FILE_FILEPATH (Dev),
- EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ,
- &File
- );
- ASSERT_EFI_ERROR (Status);
- NumBytes = Dev->Size;
- Status = File->Write (File, &NumBytes, VAR_DATA_PTR (Dev));
- ASSERT_EFI_ERROR (Status);
- FileClose (File);
- }
-
- return Status;
-}
-
-EFI_STATUS
-EFIAPI
-FileWriteStore (
- IN VARIABLE_STORAGE *This,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_STATUS Status;
- VS_DEV *Dev;
- EFI_FILE_PROTOCOL *File;
-
- Status = EFI_SUCCESS;
- Dev = DEV_FROM_THIS(This);
-
- ASSERT (Buffer != NULL);
- ASSERT (Offset + BufferSize <= Dev->Size);
-
- CopyMem (VAR_DATA_PTR (Dev) + Offset, Buffer, BufferSize);
-
- if (!EfiAtRuntime () && VAR_FILE_DEVICEPATH (Dev) != NULL) {
- Status = OpenStore (
- VAR_FILE_DEVICEPATH (Dev),
- VAR_FILE_FILEPATH (Dev),
- EFI_FILE_MODE_WRITE | EFI_FILE_MODE_READ,
- &File
- );
- Status = File->SetPosition (File, Offset);
- ASSERT_EFI_ERROR (Status);
- Status = File->Write (File, &BufferSize, Buffer);
- ASSERT_EFI_ERROR (Status);
- FileClose (File);
- }
- return Status;
-}
-
-VOID
-EFIAPI
-OnVirtualAddressChangeFs (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- VS_DEV *Dev;
-
- Dev = DEV_FROM_THIS (Context);
-
- EfiConvertPointer (0, (VOID **) &VAR_DATA_PTR (Dev));
- EfiConvertPointer (0, (VOID **) &Dev->VarStore.Erase);
- EfiConvertPointer (0, (VOID **) &Dev->VarStore.Write);
-}
-
-EFI_STATUS
-OpenStore (
- IN EFI_DEVICE_PATH_PROTOCOL *Device,
- IN CHAR16 *FilePathName,
- IN UINT64 OpenMode,
- OUT EFI_FILE_PROTOCOL **File
- )
-{
- EFI_HANDLE Handle;
- EFI_FILE_HANDLE Root;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
- EFI_STATUS Status;
-
- *File = NULL;
-
- Status = gBS->LocateDevicePath (
- &gEfiSimpleFileSystemProtocolGuid,
- &Device,
- &Handle
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = gBS->HandleProtocol (
- Handle,
- &gEfiSimpleFileSystemProtocolGuid,
- (VOID **) &Volume
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Open the root directory of the volume
- //
- Root = NULL;
- Status = Volume->OpenVolume (
- Volume,
- &Root
- );
- ASSERT_EFI_ERROR (Status);
- ASSERT (Root != NULL);
-
- //
- // Open file
- //
- Status = Root->Open (
- Root,
- File,
- FilePathName,
- OpenMode,
- 0
- );
- if (EFI_ERROR (Status)) {
- *File = NULL;
- }
-
- //
- // Close the Root directory
- //
- Root->Close (Root);
- return Status;
-}
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