95204533ad
Rework the setting of information about a file, in particular file resizing, file renaming and the returned error codes in case of error. This rework has implied a rework of the read, write, close and flush functions. To strickly separate what has been actually written to the media (flushed) from what has not been written when a file is open, an "Info" field has been added to the description of a file. The field is used to store the modifications done to the file by the means of SetInfo() like the change of the name or of the size. Such changes are written to the media only when a flush occurs. When a file is open, the information pointed to by the "Info" field is always up-to-date. This is not the case of the information stored in the "HwDescription" of the file description which from now is just a mirror of what is written on the media. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ronald Cron <Ronald.Cron@arm.com> Reviewed-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16511 6f19259b-4bc3-4df7-8a09-765794883524
102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/** @file
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*
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* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#ifndef __BOOTMONFS_INTERNAL_H__
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#define __BOOTMONFS_INTERNAL_H__
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#include <PiDxe.h>
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#include <Library/UefiLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Protocol/BlockIo.h>
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#include <Protocol/DiskIo.h>
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#include <Protocol/FirmwareVolumeBlock.h>
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#include <Protocol/SimpleFileSystem.h>
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#include <Guid/BootMonFsFileInfo.h>
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#include <Guid/FileInfo.h>
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#include <Guid/FileSystemInfo.h>
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#include <Guid/FileSystemVolumeLabelInfo.h>
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#include "BootMonFsHw.h"
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#define BOOTMON_FS_VOLUME_LABEL L"NOR Flash"
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typedef struct _BOOTMON_FS_INSTANCE BOOTMON_FS_INSTANCE;
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typedef struct {
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LIST_ENTRY Link;
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VOID* Buffer;
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UINTN Size;
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UINT64 Offset; // Offset from the start of the file
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} BOOTMON_FS_FILE_REGION;
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typedef struct {
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UINT32 Signature;
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LIST_ENTRY Link;
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BOOTMON_FS_INSTANCE *Instance;
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UINTN HwDescAddress;
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HW_IMAGE_DESCRIPTION HwDescription;
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EFI_FILE_PROTOCOL File;
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//
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// The following fields are relevant only if the file is open.
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//
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EFI_FILE_INFO *Info;
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UINT64 Position;
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// If the file needs to be flushed then this list contain the memory
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// buffer that creates this file
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LIST_ENTRY RegionToFlushLink;
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UINT64 OpenMode;
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} BOOTMON_FS_FILE;
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#define BOOTMON_FS_FILE_SIGNATURE SIGNATURE_32('b', 'o', 't', 'f')
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#define BOOTMON_FS_FILE_FROM_FILE_THIS(a) CR (a, BOOTMON_FS_FILE, File, BOOTMON_FS_FILE_SIGNATURE)
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#define BOOTMON_FS_FILE_FROM_LINK_THIS(a) CR (a, BOOTMON_FS_FILE, Link, BOOTMON_FS_FILE_SIGNATURE)
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struct _BOOTMON_FS_INSTANCE {
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UINT32 Signature;
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EFI_HANDLE ControllerHandle;
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LIST_ENTRY Link;
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EFI_DRIVER_BINDING_PROTOCOL *Binding;
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EFI_DISK_IO_PROTOCOL *DiskIo;
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EFI_BLOCK_IO_PROTOCOL *BlockIo;
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EFI_BLOCK_IO_MEDIA *Media;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_SIMPLE_FILE_SYSTEM_PROTOCOL Fs;
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EFI_FILE_SYSTEM_INFO FsInfo;
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CHAR16 Label[20];
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BOOTMON_FS_FILE *RootFile; // All the other files are linked to this root
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BOOLEAN Initialized;
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};
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#define BOOTMON_FS_SIGNATURE SIGNATURE_32('b', 'o', 't', 'm')
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#define BOOTMON_FS_FROM_FS_THIS(a) CR (a, BOOTMON_FS_INSTANCE, Fs, BOOTMON_FS_SIGNATURE)
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#define BOOTMON_FS_FROM_LINK(a) CR (a, BOOTMON_FS_INSTANCE, Link, BOOTMON_FS_SIGNATURE)
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#include "BootMonFsApi.h"
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#endif
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