| /*++
|
|
|
| Copyright (c) 2006 - 2008, 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:
|
|
|
| UnixSimpleFileSystem.h
|
|
|
| Abstract:
|
|
|
| Produce Simple File System abstractions for a directory on your PC using Unix APIs.
|
| The configuration of what devices to mount or emulate comes from
|
| environment variables.
|
|
|
| --*/
|
|
|
| #ifndef _UNIX_SIMPLE_FILE_SYSTEM_H_
|
| #define _UNIX_SIMPLE_FILE_SYSTEM_H_
|
|
|
| #include "PiDxe.h"
|
| #include <Guid/FileSystemInfo.h>
|
| #include <Guid/FileInfo.h>
|
| #include <Guid/FileSystemVolumeLabelInfo.h>
|
| #include <Protocol/SimpleFileSystem.h>
|
|
|
| #include <Library/DebugLib.h>
|
| #include <Library/BaseLib.h>
|
| #include <Library/UefiDriverEntryPoint.h>
|
| #include <Library/UefiLib.h>
|
| #include <Library/BaseMemoryLib.h>
|
| #include <Library/MemoryAllocationLib.h>
|
| #include <Library/UefiBootServicesTableLib.h>
|
| #include "UnixDxe.h"
|
|
|
| extern EFI_DRIVER_BINDING_PROTOCOL gUnixSimpleFileSystemDriverBinding;
|
| extern EFI_COMPONENT_NAME_PROTOCOL gUnixSimpleFileSystemComponentName;
|
|
|
|
|
| #define UNIX_SIMPLE_FILE_SYSTEM_PRIVATE_SIGNATURE SIGNATURE_32 ('L', 'X', 'f', 's')
|
|
|
| typedef struct {
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| UINTN Signature;
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| EFI_UNIX_THUNK_PROTOCOL *UnixThunk;
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| EFI_SIMPLE_FILE_SYSTEM_PROTOCOL SimpleFileSystem;
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| CHAR8 *FilePath;
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| CHAR16 *VolumeLabel;
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| EFI_UNICODE_STRING_TABLE *ControllerNameTable;
|
| } UNIX_SIMPLE_FILE_SYSTEM_PRIVATE;
|
|
|
| #define UNIX_SIMPLE_FILE_SYSTEM_PRIVATE_DATA_FROM_THIS(a) \
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| CR (a, \
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| UNIX_SIMPLE_FILE_SYSTEM_PRIVATE, \
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| SimpleFileSystem, \
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| UNIX_SIMPLE_FILE_SYSTEM_PRIVATE_SIGNATURE \
|
| )
|
|
|
| #define UNIX_EFI_FILE_PRIVATE_SIGNATURE SIGNATURE_32 ('l', 'o', 'f', 's')
|
|
|
| typedef struct {
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| UINTN Signature;
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| EFI_UNIX_THUNK_PROTOCOL *UnixThunk;
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| EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *SimpleFileSystem;
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| EFI_FILE EfiFile;
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| INTN fd; |
| DIR *Dir; |
| BOOLEAN IsRootDirectory;
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| BOOLEAN IsDirectoryPath;
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| BOOLEAN IsOpenedByRead;
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| char *FileName;
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| struct dirent *Dirent; |
| } UNIX_EFI_FILE_PRIVATE;
|
|
|
| #define UNIX_EFI_FILE_PRIVATE_DATA_FROM_THIS(a) \
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| CR (a, \
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| UNIX_EFI_FILE_PRIVATE, \
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| EfiFile, \
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| UNIX_EFI_FILE_PRIVATE_SIGNATURE \
|
| )
|
|
|
| //
|
| // Global Protocol Variables
|
| //
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| extern EFI_DRIVER_BINDING_PROTOCOL gUnixSimpleFileSystemDriverBinding;
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| extern EFI_COMPONENT_NAME_PROTOCOL gUnixSimpleFileSystemComponentName;
|
|
|
| //
|
| // Driver Binding protocol member functions
|
| //
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| EFI_STATUS
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| EFIAPI
|
| UnixSimpleFileSystemDriverBindingSupported (
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| IN EFI_DRIVER_BINDING_PROTOCOL *This,
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| IN EFI_HANDLE ControllerHandle,
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| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| Check to see if the driver supports a given controller.
|
|
|
| Arguments:
|
|
|
| This - A pointer to an instance of the EFI_DRIVER_BINDING_PROTOCOL.
|
|
|
| ControllerHandle - EFI handle of the controller to test.
|
|
|
| RemainingDevicePath - Pointer to remaining portion of a device path.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The device specified by ControllerHandle and RemainingDevicePath is supported by the driver
|
| specified by This.
|
|
|
| EFI_ALREADY_STARTED - The device specified by ControllerHandle and RemainingDevicePath is already being managed by
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| the driver specified by This.
|
|
|
| EFI_ACCESS_DENIED - The device specified by ControllerHandle and RemainingDevicePath is already being managed by
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| a different driver or an application that requires exclusive access.
|
|
|
| EFI_UNSUPPORTED - The device specified by ControllerHandle and RemainingDevicePath is not supported by the
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| driver specified by This.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemDriverBindingStart (
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| IN EFI_DRIVER_BINDING_PROTOCOL *This,
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| IN EFI_HANDLE ControllerHandle,
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| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Starts a device controller or a bus controller.
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|
|
| Arguments:
|
|
|
| This - A pointer to an instance of the EFI_DRIVER_BINDING_PROTOCOL.
|
|
|
| ControllerHandle - EFI handle of the controller to start.
|
|
|
| RemainingDevicePath - Pointer to remaining portion of a device path.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The device or bus controller has been started.
|
|
|
| EFI_DEVICE_ERROR - The device could not be started due to a device failure.
|
|
|
| EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemDriverBindingStop (
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| IN EFI_DRIVER_BINDING_PROTOCOL *This,
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| IN EFI_HANDLE ControllerHandle,
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| IN UINTN NumberOfChildren,
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| IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| TODO: Add function description
|
|
|
| Arguments:
|
|
|
| This - A pointer to an instance of the EFI_DRIVER_BINDING_PROTOCOL.
|
|
|
| ControllerHandle - A handle to the device to be stopped.
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|
|
| NumberOfChildren - The number of child device handles in ChildHandleBuffer.
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|
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| ChildHandleBuffer - An array of child device handles to be freed.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The device has been stopped.
|
|
|
| EFI_DEVICE_ERROR - The device could not be stopped due to a device failure.
|
|
|
| --*/
|
| ;
|
|
|
| //
|
| // Simple File System protocol member functions
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| //
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| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemOpenVolume (
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| IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
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| OUT EFI_FILE **Root
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| Open the root directory on a volume.
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|
|
| Arguments:
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|
|
| This - A pointer to the volume to open.
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|
|
| Root - A pointer to storage for the returned opened file handle of the root directory.
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|
|
| Returns:
|
|
|
| EFI_SUCCESS - The volume was opened.
|
|
|
| EFI_UNSUPPORTED - The volume does not support the requested file system type.
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|
|
| EFI_NO_MEDIA - The device has no media.
|
|
|
| EFI_DEVICE_ERROR - The device reported an error.
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|
|
| EFI_VOLUME_CORRUPTED - The file system structures are corrupted.
|
|
|
| EFI_ACCESS_DENIED - The service denied access to the file.
|
|
|
| EFI_OUT_OF_RESOURCES - The file volume could not be opened due to lack of resources.
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|
|
| EFI_MEDIA_CHANGED - The device has new media or the media is no longer supported.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemOpen (
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| IN EFI_FILE *This,
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| OUT EFI_FILE **NewHandle,
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| IN CHAR16 *FileName,
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| IN UINT64 OpenMode,
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| IN UINT64 Attributes
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Open a file relative to the source file location.
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|
|
| Arguments:
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|
|
| This - A pointer to the source file location.
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|
|
| NewHandle - Pointer to storage for the new file handle.
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|
|
| FileName - Pointer to the file name to be opened.
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|
|
| OpenMode - File open mode information.
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|
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| Attributes - File creation attributes.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The file was opened.
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|
|
| EFI_NOT_FOUND - The file could not be found in the volume.
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|
|
| EFI_NO_MEDIA - The device has no media.
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|
|
| EFI_MEDIA_CHANGED - The device has new media or the media is no longer supported.
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|
|
| EFI_DEVICE_ERROR - The device reported an error.
|
|
|
| EFI_VOLUME_CORRUPTED - The file system structures are corrupted.
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|
|
| EFI_WRITE_PROTECTED - The volume or file is write protected.
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|
|
| EFI_ACCESS_DENIED - The service denied access to the file.
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|
|
| EFI_OUT_OF_RESOURCES - Not enough resources were available to open the file.
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|
|
| EFI_VOLUME_FULL - There is not enough space left to create the new file.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemClose (
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| IN EFI_FILE *This
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Close the specified file handle.
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|
|
| Arguments:
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|
|
| This - Pointer to a returned opened file handle.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The file handle has been closed.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemDelete (
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| IN EFI_FILE *This
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Close and delete a file.
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|
|
| Arguments:
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|
|
| This - Pointer to a returned opened file handle.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The file handle was closed and deleted.
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|
|
| EFI_WARN_DELETE_FAILURE - The handle was closed but could not be deleted.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemRead (
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| IN EFI_FILE *This,
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| IN OUT UINTN *BufferSize,
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| OUT VOID *Buffer
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Read data from a file.
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|
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| Arguments:
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|
|
| This - Pointer to a returned open file handle.
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|
|
| BufferSize - On input, the size of the Buffer. On output, the number of bytes stored in the Buffer.
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|
|
| Buffer - Pointer to the first byte of the read Buffer.
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|
|
| Returns:
|
|
|
| EFI_SUCCESS - The data was read.
|
|
|
| EFI_NO_MEDIA - The device has no media.
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|
|
| EFI_DEVICE_ERROR - The device reported an error.
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|
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| EFI_VOLUME_CORRUPTED - The file system structures are corrupted.
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|
|
| EFI_BUFFER_TOO_SMALL - The supplied buffer size was too small to store the current directory entry.
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| *BufferSize has been updated with the size needed to complete the request.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemWrite (
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| IN EFI_FILE *This,
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| IN OUT UINTN *BufferSize,
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| IN VOID *Buffer
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Write data to a file.
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|
|
| Arguments:
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|
|
| This - Pointer to an opened file handle.
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|
|
| BufferSize - On input, the number of bytes in the Buffer to write to the file. On output, the number of bytes
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| of data written to the file.
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|
|
| Buffer - Pointer to the first by of data in the buffer to write to the file.
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|
|
| Returns:
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|
|
| EFI_SUCCESS - The data was written to the file.
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|
|
| EFI_UNSUPPORTED - Writes to an open directory are not supported.
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|
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| EFI_NO_MEDIA - The device has no media.
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|
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| EFI_DEVICE_ERROR - The device reported an error.
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|
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| EFI_VOLUME_CORRUPTED - The file system structures are corrupt.
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|
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| EFI_WRITE_PROTECTED - The file, directory, volume, or device is write protected.
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|
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| EFI_ACCESS_DENIED - The file was opened read-only.
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|
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| EFI_VOLUME_FULL - The volume is full.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemSetPosition (
|
| IN EFI_FILE *This,
|
| IN UINT64 Position
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Set a file's current position.
|
|
|
| Arguments:
|
|
|
| This - Pointer to an opened file handle.
|
|
|
| Position - The byte position from the start of the file to set.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The file position has been changed.
|
|
|
| EFI_UNSUPPORTED - The seek request for non-zero is not supported for directories.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemGetPosition (
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| IN EFI_FILE *This,
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| OUT UINT64 *Position
|
| )
|
| /*++
|
|
|
| Routine Description:
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|
|
| Get a file's current position.
|
|
|
| Arguments:
|
|
|
| This - Pointer to an opened file handle.
|
|
|
| Position - Pointer to storage for the current position.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The file position has been reported.
|
|
|
| EFI_UNSUPPORTED - Not valid for directories.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemGetInfo (
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| IN EFI_FILE *This,
|
| IN EFI_GUID *InformationType,
|
| IN OUT UINTN *BufferSize,
|
| OUT VOID *Buffer
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| Return information about a file or volume.
|
|
|
| Arguments:
|
|
|
| This - Pointer to an opened file handle.
|
|
|
| InformationType - GUID describing the type of information to be returned.
|
|
|
| BufferSize - On input, the size of the information buffer. On output, the number of bytes written to the
|
| information buffer.
|
|
|
| Buffer - Pointer to the first byte of the information buffer.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The requested information has been written into the buffer.
|
|
|
| EFI_UNSUPPORTED - The InformationType is not known.
|
|
|
| EFI_NO_MEDIA - The device has no media.
|
|
|
| EFI_DEVICE_ERROR - The device reported an error.
|
|
|
| EFI_VOLUME_CORRUPTED - The file system structures are corrupt.
|
|
|
| EFI_BUFFER_TOO_SMALL - The buffer size was too small to contain the requested information. The buffer size has
|
| been updated with the size needed to complete the requested operation.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemSetInfo (
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| IN EFI_FILE *This,
|
| IN EFI_GUID *InformationType,
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| IN UINTN BufferSize,
|
| IN VOID *Buffer
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| Set information about a file or volume.
|
|
|
| Arguments:
|
|
|
| This - Pointer to an opened file handle.
|
|
|
| InformationType - GUID identifying the type of information to set.
|
|
|
| BufferSize - Number of bytes of data in the information buffer.
|
|
|
| Buffer - Pointer to the first byte of data in the information buffer.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The file or volume information has been updated.
|
|
|
| EFI_UNSUPPORTED - The information identifier is not recognised.
|
|
|
| EFI_NO_MEDIA - The device has no media.
|
|
|
| EFI_DEVICE_ERROR - The device reported an error.
|
|
|
| EFI_VOLUME_CORRUPTED - The file system structures are corrupt.
|
|
|
| EFI_WRITE_PROTECTED - The file, directory, volume, or device is write protected.
|
|
|
| EFI_ACCESS_DENIED - The file was opened read-only.
|
|
|
| EFI_VOLUME_FULL - The volume is full.
|
|
|
| EFI_BAD_BUFFER_SIZE - The buffer size is smaller than the type indicated by InformationType.
|
|
|
| --*/
|
| ;
|
|
|
| EFI_STATUS
|
| EFIAPI
|
| UnixSimpleFileSystemFlush (
|
| IN EFI_FILE *This
|
| )
|
| /*++
|
|
|
| Routine Description:
|
|
|
| Flush all modified data to the media.
|
|
|
| Arguments:
|
|
|
| This - Pointer to an opened file handle.
|
|
|
| Returns:
|
|
|
| EFI_SUCCESS - The data has been flushed.
|
|
|
| EFI_NO_MEDIA - The device has no media.
|
|
|
| EFI_DEVICE_ERROR - The device reported an error.
|
|
|
| EFI_VOLUME_CORRUPTED - The file system structures have been corrupted.
|
|
|
| EFI_WRITE_PROTECTED - The file, directory, volume, or device is write protected.
|
|
|
| EFI_ACCESS_DENIED - The file was opened read-only.
|
|
|
| EFI_VOLUME_FULL - The volume is full.
|
|
|
| --*/
|
| ;
|
|
|
| #endif /* _UNIX_SIMPLE_FILE_SYSTEM_H_ */
|
|
|
| /* eof - UnixSimpleFileSystem.h */
|