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On Linux try to open in read/write and exclusive mode, if not retry in readonly.

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This commit is contained in:
Natalia Portillo
2018-04-02 23:09:18 +01:00
parent 2a9f5ff828
commit 94d51f5411
1 changed files with 103 additions and 73 deletions
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46
DiscImageChef.Devices/Device/Constructor.cs
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@@ -72,7 +72,8 @@ namespace DiscImageChef.Devices
case PlatformID.Win32NT:
{
FileHandle = Extern.CreateFile(devicePath, FileAccess.GenericRead | FileAccess.GenericWrite,
FileShare.Read | FileShare.Write, IntPtr.Zero, FileMode.OpenExisting,
FileShare.Read | FileShare.Write, IntPtr.Zero,
FileMode.OpenExisting,
FileAttributes.Normal, IntPtr.Zero);
if(((SafeFileHandle)FileHandle).IsInvalid)
@@ -85,13 +86,27 @@ namespace DiscImageChef.Devices
}
case PlatformID.Linux:
{
FileHandle = Linux.Extern.open(devicePath, FileFlags.Readonly | FileFlags.NonBlocking);
FileHandle =
Linux.Extern.open(devicePath,
FileFlags.ReadWrite | FileFlags.NonBlocking | FileFlags.CreateNew);
if((int)FileHandle < 0)
{
LastError = Marshal.GetLastWin32Error();
if(LastError == 13) // EACCES
{
FileHandle = Linux.Extern.open(devicePath, FileFlags.Readonly | FileFlags.NonBlocking);
if((int)FileHandle < 0)
{
Error = true;
LastError = Marshal.GetLastWin32Error();
}
}
else Error = true;
LastError = Marshal.GetLastWin32Error();
}
break;
}
@@ -224,6 +239,7 @@ namespace DiscImageChef.Devices
if(ataid.HasValue) scsiSense = ScsiInquiry(out inqBuf, out _);
}
else Manufacturer = "ATA";
break;
}
}
@@ -311,6 +327,7 @@ namespace DiscImageChef.Devices
}
}
}
break;
case PlatformID.Linux:
if(devicePath.StartsWith("/dev/sd", StringComparison.Ordinal) ||
@@ -323,25 +340,33 @@ namespace DiscImageChef.Devices
string devPath = devicePath.Substring(5);
if(File.Exists("/sys/block/" + devPath + "/device/csd"))
{
int len = ConvertFromHexAscii("/sys/block/" + devPath + "/device/csd", out cachedCsd);
int len =
ConvertFromHexAscii("/sys/block/" + devPath + "/device/csd", out cachedCsd);
if(len == 0) cachedCsd = null;
}
if(File.Exists("/sys/block/" + devPath + "/device/cid"))
{
int len = ConvertFromHexAscii("/sys/block/" + devPath + "/device/cid", out cachedCid);
int len =
ConvertFromHexAscii("/sys/block/" + devPath + "/device/cid", out cachedCid);
if(len == 0) cachedCid = null;
}
if(File.Exists("/sys/block/" + devPath + "/device/scr"))
{
int len = ConvertFromHexAscii("/sys/block/" + devPath + "/device/scr", out cachedScr);
int len =
ConvertFromHexAscii("/sys/block/" + devPath + "/device/scr", out cachedScr);
if(len == 0) cachedScr = null;
}
if(File.Exists("/sys/block/" + devPath + "/device/ocr"))
{
int len = ConvertFromHexAscii("/sys/block/" + devPath + "/device/ocr", out cachedOcr);
int len =
ConvertFromHexAscii("/sys/block/" + devPath + "/device/ocr", out cachedOcr);
if(len == 0) cachedOcr = null;
}
}
break;
default:
scsiSense = ScsiInquiry(out inqBuf, out _);
@@ -466,6 +491,7 @@ namespace DiscImageChef.Devices
UsbSerialString =
usbDevice.SerialNumber; // This is incorrect filled by Windows with SCSI/ATA serial number
}
break;
default:
IsUsb = false;
@@ -663,7 +689,9 @@ namespace DiscImageChef.Devices
if(string.IsNullOrEmpty(Manufacturer)) Manufacturer = UsbManufacturerString;
if(string.IsNullOrEmpty(Model)) Model = UsbProductString;
if(string.IsNullOrEmpty(Serial)) Serial = UsbSerialString;
else foreach(char c in Serial.Where(char.IsControl)) Serial = UsbSerialString;
else
foreach(char c in Serial.Where(char.IsControl))
Serial = UsbSerialString;
}
if(!IsFireWire) return;
@@ -671,7 +699,9 @@ namespace DiscImageChef.Devices
if(string.IsNullOrEmpty(Manufacturer)) Manufacturer = FireWireVendorName;
if(string.IsNullOrEmpty(Model)) Model = FireWireModelName;
if(string.IsNullOrEmpty(Serial)) Serial = $"{firewireGuid:X16}";
else foreach(char c in Serial.Where(char.IsControl)) Serial = $"{firewireGuid:X16}";
else
foreach(char c in Serial.Where(char.IsControl))
Serial = $"{firewireGuid:X16}";
}
static int ConvertFromHexAscii(string file, out byte[] outBuf)