* Copyright 2007-2013, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2009, Michael Lotz, mmlr@mlotz.ch. All rights reserved.
*
* Distributed under the terms of the MIT License.
*/
#ifndef GPT_HEADER_H
#define GPT_HEADER_H
#include "gpt.h"
namespace EFI {
class Header {
public:
Header(int fd, uint64 lastBlock,
uint32 blockSize);
#ifndef _BOOT_MODE
Header(uint64 lastBlock, uint32 blockSize);
#endif
~Header();
status_t InitCheck() const;
bool IsDirty() const;
uint64 FirstUsableBlock() const
{ return fHeader.FirstUsableBlock(); }
uint64 LastUsableBlock() const
{ return fHeader.LastUsableBlock(); }
const gpt_table_header& TableHeader() const
{ return fHeader; }
uint32 EntryCount() const
{ return fHeader.EntryCount(); }
gpt_partition_entry& EntryAt(int32 index) const
{ return *(gpt_partition_entry*)(fEntries
+ fHeader.EntrySize() * index); }
#ifndef _BOOT_MODE
status_t WriteEntry(int fd, uint32 entryIndex);
status_t Write(int fd);
#endif
private:
#ifndef _BOOT_MODE
status_t _WriteHeader(int fd);
status_t _Write(int fd, off_t offset, const void* data,
size_t size) const;
void _UpdateCRC();
void _UpdateCRC(gpt_table_header& header);
#endif
status_t _Read(int fd, off_t offset, void* data,
size_t size) const;
static bool _IsHeaderValid(gpt_table_header& header,
uint64 block);
static bool _ValidateHeaderCRC(gpt_table_header& header);
bool _ValidateEntriesCRC() const;
void _SetBackupHeaderFromPrimary(uint64 lastBlock);
size_t _EntryArraySize() const
{ return fHeader.EntrySize()
* fHeader.EntryCount(); }
const char* _PrintGUID(const guid_t& id);
void _Dump(const gpt_table_header& header);
void _DumpPartitions();
private:
uint32 fBlockSize;
status_t fStatus;
gpt_table_header fHeader;
gpt_table_header fBackupHeader;
uint8* fEntries;
bool fDirty;
};
}
#endif
