| mBeginSector = 0;␊ |
| mPartitionNumber = partitionNumber;␊ |
| mNumPartitions = 0;␊ |
| ␊ |
| if(mDisk)␊ |
| {␊ |
| // read in lba1, this contains the partition map if it's GPT␊ |
| mDisk->Read(1, 1, mLBABUffer);␊ |
| mGPTHeader = (gpt_hdr*)mLBABUffer;␊ |
| }␊ |
| else␊ |
| {␊ |
| mGPTHeader = NULL;␊ |
| }␊ |
| ␊ |
| if(isGPTDisk())␊ |
| {␊ |
| mNumPartitions = mGPTHeader->hdr_entries;␊ |
| }␊ |
| ␊ |
| mGPTHeader = NULL;␊ |
| ␊ |
| if(mPartitionNumber >= 0 && mPartitionNumber < mNumPartitions)␊ |
| {␊ |
| // read in partition entry.␊ |
| mDisk->Read(2 + mPartitionNumber, 1, mLBABUffer);␊ |
| ␊ |
| mGPTEntry = (gpt_ent*) mLBABUffer;␊ |
| ␊ |
| mNumSectors = mGPTEntry->ent_lba_end - mGPTEntry->ent_lba_start;␊ |
| mBeginSector = mGPTEntry->ent_lba_start;␊ |
| //mUUID = mGPTEntry->ent_uuid;␊ |
| }␊ |
| }␊ |
| ␊ |
| GUIDPartition::~GUIDPartition()␊ |
| {␊ |
| ␊ |
| } |
| }␊ |
| ␊ |
| ␊ |
| bool GUIDPartition::isGPTDisk()␊ |
| {␊ |
| static bool status = false;␊ |
| ␊ |
| if(status) return status;␊ |
| ␊ |
| if(!mGPTHeader) return false;␊ |
| ␊ |
| if(mGPTHeader->hdr_sig[0] == 'E' &&␊ |
| mGPTHeader->hdr_sig[1] == 'F' &&␊ |
| mGPTHeader->hdr_sig[2] == 'I' &&␊ |
| mGPTHeader->hdr_sig[3] == ' ' &&␊ |
| mGPTHeader->hdr_sig[4] == 'P' &&␊ |
| mGPTHeader->hdr_sig[5] == 'A' &&␊ |
| mGPTHeader->hdr_sig[6] == 'R' &&␊ |
| mGPTHeader->hdr_sig[7] == 'T') return true;␊ |
| ␊ |
| return false;␊ |
| }␊ |
