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https://github.com/aaru-dps/Aaru.git
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369 lines
14 KiB
C#
369 lines
14 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : ATA.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Core algorithms.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Scans media from ATA devices.
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//
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// --[ License ] --------------------------------------------------------------
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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 General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (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 General Public License for more details.
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//
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// You should have received a copy of the GNU 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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// ----------------------------------------------------------------------------
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// Copyright © 2011-2022 Natalia Portillo
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// ****************************************************************************/
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namespace Aaru.Core.Devices.Scanning;
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using System;
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using System.Collections.Generic;
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using Aaru.CommonTypes.Structs.Devices.ATA;
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using Aaru.Core.Logging;
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/// <summary>Implements scanning the media from an ATA device</summary>
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public sealed partial class MediaScan
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{
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/// <summary>Scans the media from an ATA device</summary>
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/// <returns>Scanning results</returns>
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ScanResults Ata()
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{
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var results = new ScanResults
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{
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Blocks = 0
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};
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const ushort ataProfile = 0x0001;
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const uint timeout = 5;
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bool sense = _dev.AtaIdentify(out byte[] cmdBuf, out _);
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if(!sense &&
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Identify.Decode(cmdBuf).HasValue)
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{
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// Initialize reader
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var ataReader = new Reader(_dev, timeout, cmdBuf, null);
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// Fill reader blocks
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results.Blocks = ataReader.GetDeviceBlocks();
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if(ataReader.FindReadCommand())
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{
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StoppingErrorMessage?.Invoke(ataReader.ErrorMessage);
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return results;
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}
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// Check block sizes
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if(ataReader.GetBlockSize())
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{
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StoppingErrorMessage?.Invoke(ataReader.ErrorMessage);
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return results;
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}
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uint blockSize = ataReader.LogicalBlockSize;
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// Check how many blocks to read, if error show and return
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if(ataReader.GetBlocksToRead())
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{
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StoppingErrorMessage?.Invoke(ataReader.ErrorMessage);
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return results;
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}
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uint blocksToRead = ataReader.BlocksToRead;
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ushort cylinders = ataReader.Cylinders;
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byte heads = ataReader.Heads;
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byte sectors = ataReader.Sectors;
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results.A = 0; // <3ms
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results.B = 0; // >=3ms, <10ms
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results.C = 0; // >=10ms, <50ms
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results.D = 0; // >=50ms, <150ms
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results.E = 0; // >=150ms, <500ms
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results.F = 0; // >=500ms
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results.Errored = 0;
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DateTime start;
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DateTime end;
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results.ProcessingTime = 0;
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double currentSpeed = 0;
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results.MaxSpeed = double.MinValue;
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results.MinSpeed = double.MaxValue;
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results.UnreadableSectors = new List<ulong>();
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results.SeekMax = double.MinValue;
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results.SeekMin = double.MaxValue;
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results.SeekTotal = 0;
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const int seekTimes = 1000;
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double seekCur;
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var rnd = new Random();
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MhddLog mhddLog;
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IbgLog ibgLog;
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double duration;
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if(ataReader.IsLba)
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{
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UpdateStatus?.Invoke($"Reading {blocksToRead} sectors at a time.");
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InitBlockMap?.Invoke(results.Blocks, blockSize, blocksToRead, ataProfile);
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mhddLog = new MhddLog(_mhddLogPath, _dev, results.Blocks, blockSize, blocksToRead, false);
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ibgLog = new IbgLog(_ibgLogPath, ataProfile);
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start = DateTime.UtcNow;
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DateTime timeSpeedStart = DateTime.UtcNow;
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ulong sectorSpeedStart = 0;
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InitProgress?.Invoke();
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for(ulong i = 0; i < results.Blocks; i += blocksToRead)
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{
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if(_aborted)
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break;
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if(results.Blocks - i < blocksToRead)
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blocksToRead = (byte)(results.Blocks - i);
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if(currentSpeed > results.MaxSpeed &&
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currentSpeed > 0)
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results.MaxSpeed = currentSpeed;
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if(currentSpeed < results.MinSpeed &&
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currentSpeed > 0)
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results.MinSpeed = currentSpeed;
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UpdateProgress?.Invoke($"Reading sector {i} of {results.Blocks} ({currentSpeed:F3} MiB/sec.)",
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(long)i, (long)results.Blocks);
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bool error = ataReader.ReadBlocks(out cmdBuf, i, blocksToRead, out duration, out _, out _);
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if(!error)
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{
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if(duration >= 500)
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results.F += blocksToRead;
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else if(duration >= 150)
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results.E += blocksToRead;
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else if(duration >= 50)
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results.D += blocksToRead;
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else if(duration >= 10)
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results.C += blocksToRead;
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else if(duration >= 3)
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results.B += blocksToRead;
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else
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results.A += blocksToRead;
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ScanTime?.Invoke(i, duration);
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mhddLog.Write(i, duration);
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ibgLog.Write(i, currentSpeed * 1024);
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}
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else
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{
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ScanUnreadable?.Invoke(i);
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results.Errored += blocksToRead;
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for(ulong b = i; b < i + blocksToRead; b++)
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results.UnreadableSectors.Add(b);
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mhddLog.Write(i, duration < 500 ? 65535 : duration);
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ibgLog.Write(i, 0);
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}
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sectorSpeedStart += blocksToRead;
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double elapsed = (DateTime.UtcNow - timeSpeedStart).TotalSeconds;
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if(elapsed <= 0)
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continue;
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currentSpeed = sectorSpeedStart * blockSize / (1048576 * elapsed);
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ScanSpeed?.Invoke(i, currentSpeed * 1024);
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sectorSpeedStart = 0;
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timeSpeedStart = DateTime.UtcNow;
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}
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end = DateTime.UtcNow;
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EndProgress?.Invoke();
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mhddLog.Close();
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ibgLog.Close(_dev, results.Blocks, blockSize, (end - start).TotalSeconds, currentSpeed * 1024,
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blockSize * (double)(results.Blocks + 1) / 1024 / (results.ProcessingTime / 1000),
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_devicePath);
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InitProgress?.Invoke();
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if(ataReader.CanSeekLba && _seekTest)
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for(var i = 0; i < seekTimes; i++)
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{
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if(_aborted)
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break;
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var seekPos = (uint)rnd.Next((int)results.Blocks);
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PulseProgress?.Invoke($"Seeking to sector {seekPos}...\t\t");
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ataReader.Seek(seekPos, out seekCur);
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if(seekCur > results.SeekMax &&
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seekCur > 0)
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results.SeekMax = seekCur;
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if(seekCur < results.SeekMin &&
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seekCur > 0)
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results.SeekMin = seekCur;
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results.SeekTotal += seekCur;
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GC.Collect();
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}
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EndProgress?.Invoke();
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}
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else
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{
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InitBlockMap?.Invoke(results.Blocks, blockSize, blocksToRead, ataProfile);
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mhddLog = new MhddLog(_mhddLogPath, _dev, results.Blocks, blockSize, blocksToRead, false);
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ibgLog = new IbgLog(_ibgLogPath, ataProfile);
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ulong currentBlock = 0;
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results.Blocks = (ulong)(cylinders * heads * sectors);
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start = DateTime.UtcNow;
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DateTime timeSpeedStart = DateTime.UtcNow;
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ulong sectorSpeedStart = 0;
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InitProgress?.Invoke();
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for(ushort cy = 0; cy < cylinders; cy++)
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{
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for(byte hd = 0; hd < heads; hd++)
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{
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for(byte sc = 1; sc < sectors; sc++)
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{
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if(_aborted)
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break;
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if(currentSpeed > results.MaxSpeed &&
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currentSpeed > 0)
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results.MaxSpeed = currentSpeed;
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if(currentSpeed < results.MinSpeed &&
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currentSpeed > 0)
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results.MinSpeed = currentSpeed;
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PulseProgress?.
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Invoke($"Reading cylinder {cy} head {hd} sector {sc} ({currentSpeed:F3} MiB/sec.)");
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bool error = ataReader.ReadChs(out cmdBuf, cy, hd, sc, out duration, out _);
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if(!error)
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{
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if(duration >= 500)
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results.F += blocksToRead;
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else if(duration >= 150)
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results.E += blocksToRead;
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else if(duration >= 50)
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results.D += blocksToRead;
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else if(duration >= 10)
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results.C += blocksToRead;
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else if(duration >= 3)
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results.B += blocksToRead;
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else
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results.A += blocksToRead;
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ScanTime?.Invoke(currentBlock, duration);
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mhddLog.Write(currentBlock, duration);
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ibgLog.Write(currentBlock, currentSpeed * 1024);
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}
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else
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{
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ScanUnreadable?.Invoke(currentBlock);
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results.Errored += blocksToRead;
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results.UnreadableSectors.Add(currentBlock);
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mhddLog.Write(currentBlock, duration < 500 ? 65535 : duration);
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ibgLog.Write(currentBlock, 0);
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}
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sectorSpeedStart++;
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currentBlock++;
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double elapsed = (DateTime.UtcNow - timeSpeedStart).TotalSeconds;
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if(elapsed <= 0)
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continue;
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currentSpeed = sectorSpeedStart * blockSize / (1048576 * elapsed);
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ScanSpeed?.Invoke(currentBlock, currentSpeed * 1024);
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sectorSpeedStart = 0;
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timeSpeedStart = DateTime.UtcNow;
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}
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}
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}
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end = DateTime.UtcNow;
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EndProgress?.Invoke();
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mhddLog.Close();
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ibgLog.Close(_dev, results.Blocks, blockSize, (end - start).TotalSeconds, currentSpeed * 1024,
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blockSize * (double)(results.Blocks + 1) / 1024 / (results.ProcessingTime / 1000),
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_devicePath);
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InitProgress?.Invoke();
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if(ataReader.CanSeek)
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for(var i = 0; i < seekTimes; i++)
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{
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if(_aborted)
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break;
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var seekCy = (ushort)rnd.Next(cylinders);
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var seekHd = (byte)rnd.Next(heads);
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var seekSc = (byte)rnd.Next(sectors);
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PulseProgress?.Invoke($"\rSeeking to cylinder {seekCy}, head {seekHd}, sector {seekSc}...\t\t");
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ataReader.SeekChs(seekCy, seekHd, seekSc, out seekCur);
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if(seekCur > results.SeekMax &&
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seekCur > 0)
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results.SeekMax = seekCur;
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if(seekCur < results.SeekMin &&
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seekCur > 0)
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results.SeekMin = seekCur;
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results.SeekTotal += seekCur;
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GC.Collect();
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}
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EndProgress?.Invoke();
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}
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results.ProcessingTime /= 1000;
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results.TotalTime = (end - start).TotalSeconds;
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results.AvgSpeed = blockSize * (double)(results.Blocks + 1) / 1048576 / results.ProcessingTime;
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results.SeekTimes = seekTimes;
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return results;
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}
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StoppingErrorMessage?.Invoke("Unable to communicate with ATA device.");
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return results;
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}
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} |