diff options
Diffstat (limited to 'EmulatorPkg/EmuSimpleFileSystemDxe/EmuSimpleFileSystem.c')
| -rw-r--r-- | EmulatorPkg/EmuSimpleFileSystemDxe/EmuSimpleFileSystem.c | 917 |
1 files changed, 0 insertions, 917 deletions
diff --git a/EmulatorPkg/EmuSimpleFileSystemDxe/EmuSimpleFileSystem.c b/EmulatorPkg/EmuSimpleFileSystemDxe/EmuSimpleFileSystem.c deleted file mode 100644 index 4709f7a46f..0000000000 --- a/EmulatorPkg/EmuSimpleFileSystemDxe/EmuSimpleFileSystem.c +++ /dev/null @@ -1,917 +0,0 @@ -/*++ @file
- Produce Simple File System abstractions for directories on your PC using Posix APIs.
- The configuration of what devices to mount or emulate comes from UNIX
- environment variables. The variables must be visible to the Microsoft*
- Developer Studio for them to work.
-
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
-Portions copyright (c) 2011, Apple Inc. 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.
-
-**/
-
-#include "EmuSimpleFileSystem.h"
-
-
-
-
-/**
- Opens a new file relative to the source file's location.
-
- @param This The protocol instance pointer.
- @param NewHandle Returns File Handle for FileName.
- @param FileName Null terminated string. "\", ".", and ".." are supported.
- @param OpenMode Open mode for file.
- @param Attributes Only used for EFI_FILE_MODE_CREATE.
-
- @retval EFI_SUCCESS The device was opened.
- @retval EFI_NOT_FOUND The specified file could not be found on the device.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_MEDIA_CHANGED The media has changed.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_ACCESS_DENIED The service denied access to the file.
- @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources.
- @retval EFI_VOLUME_FULL The volume is full.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemOpen (
- IN EFI_FILE_PROTOCOL *This,
- OUT EFI_FILE_PROTOCOL **NewHandle,
- IN CHAR16 *FileName,
- IN UINT64 OpenMode,
- IN UINT64 Attributes
- )
-{
- EMU_EFI_FILE_PRIVATE *PrivateFile;
-
- //
- // Check for obvious invalid parameters.
- //
- if (This == NULL || NewHandle == NULL || FileName == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- switch (OpenMode) {
- case EFI_FILE_MODE_CREATE | EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE:
- if (Attributes &~EFI_FILE_VALID_ATTR) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Attributes & EFI_FILE_READ_ONLY) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // fall through
- //
- case EFI_FILE_MODE_READ:
- case EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE:
- break;
-
- default:
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- return PrivateFile->Io->Open (PrivateFile->Io, NewHandle, FileName, OpenMode, Attributes);
-}
-
-
-
-/**
- Close the file handle
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The file was closed.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemClose (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Status = PrivateFile->Io->Close (PrivateFile->Io);
- if (!EFI_ERROR (Status)) {
- gBS->FreePool (PrivateFile);
- }
-
- gBS->RestoreTPL (OldTpl);
-
- return Status;
-}
-
-
-/**
- Close and delete the file handle.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The file was closed and deleted.
- @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemDelete (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->Delete (PrivateFile->Io);
- if (!EFI_ERROR (Status)) {
- gBS->FreePool (PrivateFile);
- }
-
- gBS->RestoreTPL (OldTpl);
-
- return Status;
-}
-
-
-/**
- Read data from the file.
-
- @param This Protocol instance pointer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer in which data is read.
-
- @retval EFI_SUCCESS Data was read.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_BUFFER_TO_SMALL BufferSize is too small. BufferSize contains required size.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemRead (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL || BufferSize == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((*BufferSize != 0) && (Buffer == NULL)) {
- // Buffer can be NULL if *BufferSize is zero
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->Read (PrivateFile->Io, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Write data to a file.
-
- @param This Protocol instance pointer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer in which data to write.
-
- @retval EFI_SUCCESS Data was written.
- @retval EFI_UNSUPPORTED Writes to Open directory are not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_DEVICE_ERROR An attempt was made to write to a deleted file.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_VOLUME_FULL The volume is full.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemWrite (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL || BufferSize == NULL || Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->Write (PrivateFile->Io, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Get a file's current position
-
- @param This Protocol instance pointer.
- @param Position Byte position from the start of the file.
-
- @retval EFI_SUCCESS Position was updated.
- @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemGetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 *Position
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL || Position == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->GetPosition (PrivateFile->Io, Position);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-
-/**
- Set file's current position
-
- @param This Protocol instance pointer.
- @param Position Byte position from the start of the file.
-
- @retval EFI_SUCCESS Position was updated.
- @retval EFI_UNSUPPORTED Seek request for non-zero is not valid on open..
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemSetPosition (
- IN EFI_FILE_PROTOCOL *This,
- IN UINT64 Position
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->SetPosition (PrivateFile->Io, Position);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Get information about a file.
-
- @param This Protocol instance pointer.
- @param InformationType Type of information to return in Buffer.
- @param BufferSize On input size of buffer, on output amount of data in buffer.
- @param Buffer The buffer to return data.
-
- @retval EFI_SUCCESS Data was returned.
- @retval EFI_UNSUPPORTED InformationType is not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_BUFFER_TOO_SMALL Buffer was too small; required size returned in BufferSize.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemGetInfo (
- IN EFI_FILE_PROTOCOL *This,
- IN EFI_GUID *InformationType,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL || InformationType == NULL || BufferSize == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->GetInfo (PrivateFile->Io, InformationType, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Set information about a file
-
- @param File Protocol instance pointer.
- @param InformationType Type of information in Buffer.
- @param BufferSize Size of buffer.
- @param Buffer The data to write.
-
- @retval EFI_SUCCESS Data was set.
- @retval EFI_UNSUPPORTED InformationType is not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemSetInfo (
- IN EFI_FILE_PROTOCOL*This,
- IN EFI_GUID *InformationType,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- //
- // Check for invalid parameters.
- //
- if (This == NULL || InformationType == NULL || BufferSize == 0 || Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->SetInfo (PrivateFile->Io, InformationType, BufferSize, Buffer);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-/**
- Flush data back for the file handle.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Data was flushed.
- @retval EFI_UNSUPPORTED Writes to Open directory are not supported.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_WRITE_PROTECTED The device is write protected.
- @retval EFI_ACCESS_DENIED The file was open for read only.
- @retval EFI_VOLUME_FULL The volume is full.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemFlush (
- IN EFI_FILE_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- PrivateFile = EMU_EFI_FILE_PRIVATE_DATA_FROM_THIS (This);
-
- Status = PrivateFile->Io->Flush (PrivateFile->Io);
-
- gBS->RestoreTPL (OldTpl);
- return Status;
-}
-
-
-
-/**
- Open the root directory on a volume.
-
- @param This Protocol instance pointer.
- @param Root Returns an Open file handle for the root directory
-
- @retval EFI_SUCCESS The device was opened.
- @retval EFI_UNSUPPORTED This volume does not support the file system.
- @retval EFI_NO_MEDIA The device has no media.
- @retval EFI_DEVICE_ERROR The device reported an error.
- @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
- @retval EFI_ACCESS_DENIED The service denied access to the file.
- @retval EFI_OUT_OF_RESOURCES The volume was not opened due to lack of resources.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemOpenVolume (
- IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
- OUT EFI_FILE_PROTOCOL **Root
- )
-{
- EFI_STATUS Status;
- EMU_SIMPLE_FILE_SYSTEM_PRIVATE *Private;
- EMU_EFI_FILE_PRIVATE *PrivateFile;
- EFI_TPL OldTpl;
-
- Status = EFI_UNSUPPORTED;
-
- if (This == NULL || Root == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
-
- Private = EMU_SIMPLE_FILE_SYSTEM_PRIVATE_DATA_FROM_THIS (This);
-
- PrivateFile = AllocatePool (sizeof (EMU_EFI_FILE_PRIVATE));
- if (PrivateFile == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Done;
- }
-
- PrivateFile->Signature = EMU_EFI_FILE_PRIVATE_SIGNATURE;
- PrivateFile->IoThunk = Private->IoThunk;
- PrivateFile->SimpleFileSystem = This;
- PrivateFile->EfiFile.Revision = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION;
- PrivateFile->EfiFile.Open = EmuSimpleFileSystemOpen;
- PrivateFile->EfiFile.Close = EmuSimpleFileSystemClose;
- PrivateFile->EfiFile.Delete = EmuSimpleFileSystemDelete;
- PrivateFile->EfiFile.Read = EmuSimpleFileSystemRead;
- PrivateFile->EfiFile.Write = EmuSimpleFileSystemWrite;
- PrivateFile->EfiFile.GetPosition = EmuSimpleFileSystemGetPosition;
- PrivateFile->EfiFile.SetPosition = EmuSimpleFileSystemSetPosition;
- PrivateFile->EfiFile.GetInfo = EmuSimpleFileSystemGetInfo;
- PrivateFile->EfiFile.SetInfo = EmuSimpleFileSystemSetInfo;
- PrivateFile->EfiFile.Flush = EmuSimpleFileSystemFlush;
-
- *Root = &PrivateFile->EfiFile;
-
- Status = Private->Io->OpenVolume (Private->Io, &PrivateFile->Io);
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- AddUnicodeString2 (
- "eng",
- gEmuSimpleFileSystemComponentName.SupportedLanguages,
- &Private->ControllerNameTable,
- Private->IoThunk->ConfigString,
- TRUE
- );
-
- AddUnicodeString2 (
- "en",
- gEmuSimpleFileSystemComponentName.SupportedLanguages,
- &Private->ControllerNameTable,
- Private->IoThunk->ConfigString,
- FALSE
- );
-
-
-Done:
- if (EFI_ERROR (Status)) {
- if (PrivateFile) {
- gBS->FreePool (PrivateFile);
- }
-
- *Root = NULL;
- }
-
- gBS->RestoreTPL (OldTpl);
-
- return Status;
-}
-
-/**
- Tests to see if this driver supports a given controller. If a child device is provided,
- it further tests to see if this driver supports creating a handle for the specified child device.
-
- This function checks to see if the driver specified by This supports the device specified by
- ControllerHandle. Drivers will typically use the device path attached to
- ControllerHandle and/or the services from the bus I/O abstraction attached to
- ControllerHandle to determine if the driver supports ControllerHandle. This function
- may be called many times during platform initialization. In order to reduce boot times, the tests
- performed by this function must be very small, and take as little time as possible to execute. This
- function must not change the state of any hardware devices, and this function must be aware that the
- device specified by ControllerHandle may already be managed by the same driver or a
- different driver. This function must match its calls to AllocatePages() with FreePages(),
- AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
- Because ControllerHandle may have been previously started by the same driver, if a protocol is
- already in the opened state, then it must not be closed with CloseProtocol(). This is required
- to guarantee the state of ControllerHandle is not modified by this function.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to test. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For bus drivers, if this parameter is not NULL, then
- the bus driver must determine if the bus controller specified
- by ControllerHandle and the child controller specified
- by RemainingDevicePath are both supported by this
- bus driver.
-
- @retval EFI_SUCCESS The device specified by ControllerHandle and
- RemainingDevicePath is supported by the driver specified by This.
- @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by the driver
- specified by This.
- @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
- RemainingDevicePath is already being managed by a different
- driver or an application that requires exclusive access.
- Currently not implemented.
- @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
- RemainingDevicePath is not supported by the driver specified by This.
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemDriverBindingSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-{
- EFI_STATUS Status;
- EMU_IO_THUNK_PROTOCOL *EmuIoThunk;
-
- //
- // Open the IO Abstraction(s) needed to perform the supported test
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEmuIoThunkProtocolGuid,
- (VOID **)&EmuIoThunk,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Make sure GUID is for a File System handle.
- //
- Status = EFI_UNSUPPORTED;
- if (CompareGuid (EmuIoThunk->Protocol, &gEfiSimpleFileSystemProtocolGuid)) {
- Status = EFI_SUCCESS;
- }
-
- //
- // Close the I/O Abstraction(s) used to perform the supported test
- //
- gBS->CloseProtocol (
- ControllerHandle,
- &gEmuIoThunkProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
-
- return Status;
-}
-
-
-
-/**
- Starts a device controller or a bus controller.
-
- The Start() function is designed to be invoked from the EFI boot service ConnectController().
- As a result, much of the error checking on the parameters to Start() has been moved into this
- common boot service. It is legal to call Start() from other locations,
- but the following calling restrictions must be followed, or the system behavior will not be deterministic.
- 1. ControllerHandle must be a valid EFI_HANDLE.
- 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
- EFI_DEVICE_PATH_PROTOCOL.
- 3. Prior to calling Start(), the Supported() function for the driver specified by This must
- have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle The handle of the controller to start. This handle
- must support a protocol interface that supplies
- an I/O abstraction to the driver.
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
- parameter is ignored by device drivers, and is optional for bus
- drivers. For a bus driver, if this parameter is NULL, then handles
- for all the children of Controller are created by this driver.
- If this parameter is not NULL and the first Device Path Node is
- not the End of Device Path Node, then only the handle for the
- child device specified by the first Device Path Node of
- RemainingDevicePath is created by this driver.
- If the first Device Path Node of RemainingDevicePath is
- the End of Device Path Node, no child handle is created by this
- driver.
-
- @retval EFI_SUCCESS The device was started.
- @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
- @retval Others The driver failded to start the device.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemDriverBindingStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- )
-{
- EFI_STATUS Status;
- EMU_IO_THUNK_PROTOCOL *EmuIoThunk;
- EMU_SIMPLE_FILE_SYSTEM_PRIVATE *Private;
-
- Private = NULL;
-
- //
- // Open the IO Abstraction(s) needed
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEmuIoThunkProtocolGuid,
- (VOID **)&EmuIoThunk,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Validate GUID
- //
- if (!CompareGuid (EmuIoThunk->Protocol, &gEfiSimpleFileSystemProtocolGuid)) {
- Status = EFI_UNSUPPORTED;
- goto Done;
- }
-
- Private = AllocateZeroPool (sizeof (EMU_SIMPLE_FILE_SYSTEM_PRIVATE));
- if (Private == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Done;
- }
-
- Status = EmuIoThunk->Open (EmuIoThunk);
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- Private->Signature = EMU_SIMPLE_FILE_SYSTEM_PRIVATE_SIGNATURE;
- Private->IoThunk = EmuIoThunk;
- Private->Io = EmuIoThunk->Interface;
-
- Private->SimpleFileSystem.Revision = EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION;
- Private->SimpleFileSystem.OpenVolume = EmuSimpleFileSystemOpenVolume;
-
- Private->ControllerNameTable = NULL;
-
- AddUnicodeString2 (
- "eng",
- gEmuSimpleFileSystemComponentName.SupportedLanguages,
- &Private->ControllerNameTable,
- EmuIoThunk->ConfigString,
- TRUE
- );
-
- AddUnicodeString2 (
- "en",
- gEmuSimpleFileSystemComponentName2.SupportedLanguages,
- &Private->ControllerNameTable,
- EmuIoThunk->ConfigString,
- FALSE
- );
-
- Status = gBS->InstallMultipleProtocolInterfaces (
- &ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid, &Private->SimpleFileSystem,
- NULL
- );
-
-Done:
- if (EFI_ERROR (Status)) {
- if (Private != NULL) {
- if (Private->ControllerNameTable != NULL) {
- FreeUnicodeStringTable (Private->ControllerNameTable);
- }
-
- gBS->FreePool (Private);
-
- }
-
- gBS->CloseProtocol (
- ControllerHandle,
- &gEmuIoThunkProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- }
-
- return Status;
-}
-
-
-/**
- Stops a device controller or a bus controller.
-
- The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
- As a result, much of the error checking on the parameters to Stop() has been moved
- into this common boot service. It is legal to call Stop() from other locations,
- but the following calling restrictions must be followed, or the system behavior will not be deterministic.
- 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
- same driver's Start() function.
- 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
- EFI_HANDLE. In addition, all of these handles must have been created in this driver's
- Start() function, and the Start() function must have called OpenProtocol() on
- ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
-
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
- @param[in] ControllerHandle A handle to the device being stopped. The handle must
- support a bus specific I/O protocol for the driver
- to use to stop the device.
- @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
- @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
- if NumberOfChildren is 0.
-
- @retval EFI_SUCCESS The device was stopped.
- @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
-
-**/
-EFI_STATUS
-EFIAPI
-EmuSimpleFileSystemDriverBindingStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- )
-{
- EFI_STATUS Status;
- EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *SimpleFileSystem;
- EMU_SIMPLE_FILE_SYSTEM_PRIVATE *Private;
-
- //
- // Get our context back
- //
- Status = gBS->OpenProtocol (
- ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid,
- (VOID **)&SimpleFileSystem,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if (EFI_ERROR (Status)) {
- return EFI_UNSUPPORTED;
- }
-
- Private = EMU_SIMPLE_FILE_SYSTEM_PRIVATE_DATA_FROM_THIS (SimpleFileSystem);
- Status = Private->IoThunk->Close (Private->IoThunk);
-
- //
- // Uninstall the Simple File System Protocol from ControllerHandle
- //
- Status = gBS->UninstallMultipleProtocolInterfaces (
- ControllerHandle,
- &gEfiSimpleFileSystemProtocolGuid, &Private->SimpleFileSystem,
- NULL
- );
- if (!EFI_ERROR (Status)) {
- Status = gBS->CloseProtocol (
- ControllerHandle,
- &gEmuIoThunkProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- }
-
- if (!EFI_ERROR (Status)) {
- //
- // Free our instance data
- //
- FreeUnicodeStringTable (Private->ControllerNameTable);
- gBS->FreePool (Private);
- }
-
- return Status;
-}
-
-
-EFI_DRIVER_BINDING_PROTOCOL gEmuSimpleFileSystemDriverBinding = {
- EmuSimpleFileSystemDriverBindingSupported,
- EmuSimpleFileSystemDriverBindingStart,
- EmuSimpleFileSystemDriverBindingStop,
- 0xa,
- NULL,
- NULL
-};
-
-
-
-
-/**
- The user Entry Point for module EmuSimpleFileSystem. The user code starts with this function.
-
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
- @param[in] SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval other Some error occurs when executing this entry point.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeEmuSimpleFileSystem(
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
-
- Status = EfiLibInstallDriverBindingComponentName2 (
- ImageHandle,
- SystemTable,
- &gEmuSimpleFileSystemDriverBinding,
- ImageHandle,
- &gEmuSimpleFileSystemComponentName,
- &gEmuSimpleFileSystemComponentName2
- );
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
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