mirror of
https://github.com/uroni/urbackup_backend.git
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105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011-2016 Martin Raiber
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "unknown.h"
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#include "../../Interface/Server.h"
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#include <memory.h>
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#ifdef _WIN32
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#include <Windows.h>
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#endif
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#define DEF_BLOCKSIZE 4096
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FSUnknown::FSUnknown(const std::string &pDev, IFSImageFactory::EReadaheadMode read_ahead, bool background_priority, IFsNextBlockCallback* next_block_callback)
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: Filesystem(pDev, read_ahead, next_block_callback), bitmap(NULL)
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{
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if(has_error)
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return;
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#ifdef _WIN32
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HANDLE hDev=CreateFileW( Server->ConvertToWchar(pDev).c_str(), GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_NO_BUFFERING, NULL );
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if(hDev==INVALID_HANDLE_VALUE)
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{
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Server->Log("Error opening device -2", LL_ERROR);
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has_error=true;
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return;
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}
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DWORD r_bytes;
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GET_LENGTH_INFORMATION li;
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BOOL b=DeviceIoControl(hDev, IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &li, sizeof(GET_LENGTH_INFORMATION), &r_bytes, NULL);
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CloseHandle(hDev);
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if(!b)
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{
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Server->Log("Error in DeviceIoControl(IOCTL_DISK_GET_LENGTH_INFO)", LL_ERROR);
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has_error=true;
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return;
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}
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drivesize=li.Length.QuadPart;
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#else
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drivesize=dev->Size();
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#endif
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blocksize = DEF_BLOCKSIZE;
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if (drivesize%blocksize != 0)
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{
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Server->Log("Drive size not aligned to 4096 bytes. Using 512 bytes.", LL_INFO);
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blocksize = 512;
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}
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int64 bitmap_entries=(int64)(drivesize/ blocksize);
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if(drivesize%blocksize !=0)
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++bitmap_entries;
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size_t bitmap_bytes=(size_t)(bitmap_entries/8);
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if(bitmap_entries%8!=0)
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++bitmap_bytes;
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bitmap=new unsigned char[bitmap_bytes];
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memset(bitmap, 0xFF, bitmap_bytes);
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initReadahead(read_ahead, background_priority);
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}
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FSUnknown::~FSUnknown(void)
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{
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delete []bitmap;
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}
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int64 FSUnknown::getBlocksize(void)
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{
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return blocksize;
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}
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int64 FSUnknown::getSize(void)
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{
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return drivesize;
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}
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const unsigned char *FSUnknown::getBitmap(void)
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{
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return bitmap;
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}
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void FSUnknown::logFileChanges(std::string volpath, int64 min_size, char * fc_bitmap)
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{
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}
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