diff options
| author | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-04-18 03:09:54 +0000 |
|---|---|---|
| committer | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-04-18 03:09:54 +0000 |
| commit | 9071550e8697ed9df3d24b369bd30e3f0e190d1f (patch) | |
| tree | ae93a60e5311a6864330e72daee092255a2e64fb /DuetPkg/FSVariable/FileStorage.c | |
| parent | 25ab7ab110193a0b5fc468fd3839acb8ae4d93df (diff) | |
| download | edk2-9071550e8697ed9df3d24b369bd30e3f0e190d1f.zip edk2-9071550e8697ed9df3d24b369bd30e3f0e190d1f.tar.gz edk2-9071550e8697ed9df3d24b369bd30e3f0e190d1f.tar.bz2 | |
Add missing module for duet package.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5088 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'DuetPkg/FSVariable/FileStorage.c')
| -rw-r--r-- | DuetPkg/FSVariable/FileStorage.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/DuetPkg/FSVariable/FileStorage.c b/DuetPkg/FSVariable/FileStorage.c new file mode 100644 index 0000000..4e366de --- /dev/null +++ b/DuetPkg/FSVariable/FileStorage.c @@ -0,0 +1,441 @@ +/*++
+
+Copyright (c) 2006 - 2007, Intel Corporation
+All rights reserved. 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
+//
+
+STATIC
+VOID
+EFIAPI
+OnVirtualAddressChange (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ );
+
+STATIC
+EFI_STATUS
+EFIAPI
+FileEraseStore(
+ IN VARIABLE_STORAGE *This
+ );
+
+STATIC
+EFI_STATUS
+EFIAPI
+FileWriteStore (
+ IN VARIABLE_STORAGE *This,
+ IN UINTN Offset,
+ IN UINTN BufferSize,
+ IN VOID *Buffer
+ );
+
+STATIC
+EFI_STATUS
+OpenStore (
+ IN EFI_DEVICE_PATH_PROTOCOL *Device,
+ IN CHAR16 *FilePathName,
+ IN UINT64 OpenMode,
+ OUT EFI_FILE **File
+ );
+
+//
+// Implementation below:
+//
+STATIC
+VOID
+FileClose (
+ IN EFI_FILE *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,
+ &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
+
+STATIC
+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 *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), &Dev);
+ ASSERT_EFI_ERROR (Status);
+ ZeroMem (Dev, sizeof(VS_DEV));
+
+ Dev->Signature = VARIABLE_STORE_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 (
+ EFI_EVENT_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 = OnVirtualAddressChange;
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+EFIAPI
+FileEraseStore(
+ IN VARIABLE_STORAGE *This
+ )
+{
+ EFI_STATUS Status;
+ VS_DEV *Dev;
+ EFI_FILE *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;
+}
+
+STATIC
+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 *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;
+}
+
+STATIC
+VOID
+EFIAPI
+OnVirtualAddressChange (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ VS_DEV *Dev;
+
+ Dev = DEV_FROM_THIS (Context);
+
+ EfiConvertPointer (0, &VAR_DATA_PTR (Dev));
+ EfiConvertPointer (0, (VOID **) &Dev->VarStore.Erase);
+ EfiConvertPointer (0, (VOID **) &Dev->VarStore.Write);
+}
+
+STATIC
+EFI_STATUS
+OpenStore (
+ IN EFI_DEVICE_PATH_PROTOCOL *Device,
+ IN CHAR16 *FilePathName,
+ IN UINT64 OpenMode,
+ OUT EFI_FILE **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,
+ &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;
+}
|