mirror of
https://github.com/aaru-dps/Aaru.Server.git
synced 2025-12-16 19:24:27 +00:00
270 lines
11 KiB
C#
270 lines
11 KiB
C#
// /***************************************************************************
|
|
// The Disc Image Chef
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// Filename : Command.cs
|
|
// Author(s) : Natalia Portillo <claunia@claunia.com>
|
|
//
|
|
// Component : FeeBSD direct device access.
|
|
//
|
|
// --[ Description ] ----------------------------------------------------------
|
|
//
|
|
// Contains a high level representation of the FreeBSD syscalls used to
|
|
// directly interface devices.
|
|
//
|
|
// --[ License ] --------------------------------------------------------------
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; either version 2.1 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful, but
|
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
// Copyright © 2011-2017 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
using DiscImageChef.Console;
|
|
using DiscImageChef.Devices.Linux;
|
|
using static DiscImageChef.Devices.FreeBSD.Extern;
|
|
|
|
namespace DiscImageChef.Devices.FreeBSD
|
|
{
|
|
static class Command
|
|
{
|
|
const int CAM_MAX_CDBLEN = 16;
|
|
|
|
/// <summary>
|
|
/// Sends a SCSI command (64-bit arch)
|
|
/// </summary>
|
|
/// <returns>0 if no error occurred, otherwise, errno</returns>
|
|
/// <param name="dev">CAM device</param>
|
|
/// <param name="cdb">SCSI CDB</param>
|
|
/// <param name="buffer">Buffer for SCSI command response</param>
|
|
/// <param name="senseBuffer">Buffer with the SCSI sense</param>
|
|
/// <param name="timeout">Timeout in seconds</param>
|
|
/// <param name="direction">SCSI command transfer direction</param>
|
|
/// <param name="duration">Time it took to execute the command in milliseconds</param>
|
|
/// <param name="sense"><c>True</c> if SCSI error returned non-OK status and <paramref name="senseBuffer"/> contains SCSI sense</param>
|
|
internal static int SendScsiCommand64(IntPtr dev, byte[] cdb, ref byte[] buffer, out byte[] senseBuffer, uint timeout, ccb_flags direction, out double duration, out bool sense)
|
|
{
|
|
senseBuffer = null;
|
|
duration = 0;
|
|
sense = false;
|
|
|
|
if(buffer == null)
|
|
return -1;
|
|
|
|
IntPtr ccbPtr = cam_getccb(dev);
|
|
IntPtr cdbPtr = IntPtr.Zero;
|
|
|
|
if(ccbPtr.ToInt64() == 0)
|
|
{
|
|
sense = true;
|
|
return Marshal.GetLastWin32Error();
|
|
}
|
|
|
|
ccb_scsiio64 csio = (ccb_scsiio64)Marshal.PtrToStructure(ccbPtr, typeof(ccb_scsiio64));
|
|
csio.ccb_h.func_code = xpt_opcode.XPT_SCSI_IO;
|
|
csio.ccb_h.flags = direction;
|
|
csio.ccb_h.xflags = 0;
|
|
csio.ccb_h.retry_count = 1;
|
|
csio.ccb_h.cbfcnp = IntPtr.Zero;
|
|
csio.ccb_h.timeout = timeout;
|
|
csio.data_ptr = Marshal.AllocHGlobal(buffer.Length);
|
|
csio.dxfer_len = (uint)buffer.Length;
|
|
csio.sense_len = 32;
|
|
csio.cdb_len = (byte)cdb.Length;
|
|
// TODO: Create enum?
|
|
csio.tag_action = 0x20;
|
|
csio.cdb_bytes = new byte[CAM_MAX_CDBLEN];
|
|
if(cdb.Length <= CAM_MAX_CDBLEN)
|
|
Array.Copy(cdb, 0, csio.cdb_bytes, 0, cdb.Length);
|
|
else
|
|
{
|
|
cdbPtr = Marshal.AllocHGlobal(cdb.Length);
|
|
byte[] cdbPtrBytes = BitConverter.GetBytes(cdbPtr.ToInt64());
|
|
Array.Copy(cdbPtrBytes, 0, csio.cdb_bytes, 0, IntPtr.Size);
|
|
csio.ccb_h.flags |= ccb_flags.CAM_CDB_POINTER;
|
|
}
|
|
csio.ccb_h.flags |= ccb_flags.CAM_DEV_QFRZDIS;
|
|
|
|
Marshal.Copy(buffer, 0, csio.data_ptr, buffer.Length);
|
|
Marshal.StructureToPtr(csio, ccbPtr, false);
|
|
|
|
DateTime start = DateTime.UtcNow;
|
|
int error = cam_send_ccb(dev, ccbPtr);
|
|
DateTime end = DateTime.UtcNow;
|
|
|
|
if(error < 0)
|
|
error = Marshal.GetLastWin32Error();
|
|
|
|
csio = (ccb_scsiio64)Marshal.PtrToStructure(ccbPtr, typeof(ccb_scsiio64));
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_STATUS_MASK) != cam_status.CAM_REQ_CMP &&
|
|
(csio.ccb_h.status & cam_status.CAM_STATUS_MASK) != cam_status.CAM_SCSI_STATUS_ERROR)
|
|
{
|
|
error = Marshal.GetLastWin32Error();
|
|
DicConsole.DebugWriteLine("FreeBSD devices", "CAM status {0} error {1}", csio.ccb_h.status, error);
|
|
sense = true;
|
|
}
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_STATUS_MASK) == cam_status.CAM_SCSI_STATUS_ERROR)
|
|
{
|
|
sense = true;
|
|
senseBuffer = new byte[1];
|
|
senseBuffer[0] = csio.scsi_status;
|
|
}
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_AUTOSNS_VALID) != 0)
|
|
{
|
|
if(csio.sense_len - csio.sense_resid > 0)
|
|
{
|
|
sense = (csio.ccb_h.status & cam_status.CAM_STATUS_MASK) == cam_status.CAM_SCSI_STATUS_ERROR;
|
|
senseBuffer = new byte[csio.sense_len - csio.sense_resid];
|
|
senseBuffer[0] = csio.sense_data.error_code;
|
|
Array.Copy(csio.sense_data.sense_buf, 0, senseBuffer, 1, senseBuffer.Length - 1);
|
|
}
|
|
}
|
|
|
|
buffer = new byte[csio.dxfer_len];
|
|
cdb = new byte[csio.cdb_len];
|
|
|
|
Marshal.Copy(csio.data_ptr, buffer, 0, buffer.Length);
|
|
if(csio.ccb_h.flags.HasFlag(ccb_flags.CAM_CDB_POINTER))
|
|
Marshal.Copy(new IntPtr(BitConverter.ToInt64(csio.cdb_bytes, 0)), cdb, 0, cdb.Length);
|
|
else
|
|
Array.Copy(csio.cdb_bytes, 0, cdb, 0, cdb.Length);
|
|
duration = (end - start).TotalMilliseconds;
|
|
|
|
if(csio.ccb_h.flags.HasFlag(ccb_flags.CAM_CDB_POINTER))
|
|
Marshal.FreeHGlobal(cdbPtr);
|
|
Marshal.FreeHGlobal(csio.data_ptr);
|
|
cam_freeccb(ccbPtr);
|
|
|
|
return error;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sends a SCSI command (32-bit arch)
|
|
/// </summary>
|
|
/// <returns>0 if no error occurred, otherwise, errno</returns>
|
|
/// <param name="dev">CAM device</param>
|
|
/// <param name="cdb">SCSI CDB</param>
|
|
/// <param name="buffer">Buffer for SCSI command response</param>
|
|
/// <param name="senseBuffer">Buffer with the SCSI sense</param>
|
|
/// <param name="timeout">Timeout in seconds</param>
|
|
/// <param name="direction">SCSI command transfer direction</param>
|
|
/// <param name="duration">Time it took to execute the command in milliseconds</param>
|
|
/// <param name="sense"><c>True</c> if SCSI error returned non-OK status and <paramref name="senseBuffer"/> contains SCSI sense</param>
|
|
internal static int SendScsiCommand(IntPtr dev, byte[] cdb, ref byte[] buffer, out byte[] senseBuffer, uint timeout, ccb_flags direction, out double duration, out bool sense)
|
|
{
|
|
senseBuffer = null;
|
|
duration = 0;
|
|
sense = false;
|
|
|
|
if(buffer == null)
|
|
return -1;
|
|
|
|
IntPtr ccbPtr = cam_getccb(dev);
|
|
IntPtr cdbPtr = IntPtr.Zero;
|
|
|
|
if(ccbPtr.ToInt32() == 0)
|
|
{
|
|
sense = true;
|
|
return Marshal.GetLastWin32Error();
|
|
}
|
|
|
|
ccb_scsiio csio = (ccb_scsiio)Marshal.PtrToStructure(ccbPtr, typeof(ccb_scsiio));
|
|
csio.ccb_h.func_code = xpt_opcode.XPT_SCSI_IO;
|
|
csio.ccb_h.flags = direction;
|
|
csio.ccb_h.xflags = 0;
|
|
csio.ccb_h.retry_count = 1;
|
|
csio.ccb_h.cbfcnp = IntPtr.Zero;
|
|
csio.ccb_h.timeout = timeout;
|
|
csio.data_ptr = Marshal.AllocHGlobal(buffer.Length);
|
|
csio.dxfer_len = (uint)buffer.Length;
|
|
csio.sense_len = 32;
|
|
csio.cdb_len = (byte)cdb.Length;
|
|
// TODO: Create enum?
|
|
csio.tag_action = 0x20;
|
|
csio.cdb_bytes = new byte[CAM_MAX_CDBLEN];
|
|
if(cdb.Length <= CAM_MAX_CDBLEN)
|
|
Array.Copy(cdb, 0, csio.cdb_bytes, 0, cdb.Length);
|
|
else
|
|
{
|
|
cdbPtr = Marshal.AllocHGlobal(cdb.Length);
|
|
byte[] cdbPtrBytes = BitConverter.GetBytes(cdbPtr.ToInt32());
|
|
Array.Copy(cdbPtrBytes, 0, csio.cdb_bytes, 0, IntPtr.Size);
|
|
csio.ccb_h.flags |= ccb_flags.CAM_CDB_POINTER;
|
|
}
|
|
csio.ccb_h.flags |= ccb_flags.CAM_DEV_QFRZDIS;
|
|
|
|
Marshal.Copy(buffer, 0, csio.data_ptr, buffer.Length);
|
|
Marshal.StructureToPtr(csio, ccbPtr, false);
|
|
|
|
DateTime start = DateTime.UtcNow;
|
|
int error = cam_send_ccb(dev, ccbPtr);
|
|
DateTime end = DateTime.UtcNow;
|
|
|
|
if(error < 0)
|
|
error = Marshal.GetLastWin32Error();
|
|
|
|
csio = (ccb_scsiio)Marshal.PtrToStructure(ccbPtr, typeof(ccb_scsiio));
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_STATUS_MASK) != cam_status.CAM_REQ_CMP &&
|
|
(csio.ccb_h.status & cam_status.CAM_STATUS_MASK) != cam_status.CAM_SCSI_STATUS_ERROR)
|
|
{
|
|
error = Marshal.GetLastWin32Error();
|
|
DicConsole.DebugWriteLine("FreeBSD devices", "CAM status {0} error {1}", csio.ccb_h.status, error);
|
|
sense = true;
|
|
}
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_STATUS_MASK) == cam_status.CAM_SCSI_STATUS_ERROR)
|
|
{
|
|
sense = true;
|
|
senseBuffer = new byte[1];
|
|
senseBuffer[0] = csio.scsi_status;
|
|
}
|
|
|
|
if((csio.ccb_h.status & cam_status.CAM_AUTOSNS_VALID) != 0)
|
|
{
|
|
if(csio.sense_len - csio.sense_resid > 0)
|
|
{
|
|
sense = (csio.ccb_h.status & cam_status.CAM_STATUS_MASK) == cam_status.CAM_SCSI_STATUS_ERROR;
|
|
senseBuffer = new byte[csio.sense_len - csio.sense_resid];
|
|
senseBuffer[0] = csio.sense_data.error_code;
|
|
Array.Copy(csio.sense_data.sense_buf, 0, senseBuffer, 1, senseBuffer.Length - 1);
|
|
}
|
|
}
|
|
|
|
buffer = new byte[csio.dxfer_len];
|
|
cdb = new byte[csio.cdb_len];
|
|
|
|
Marshal.Copy(csio.data_ptr, buffer, 0, buffer.Length);
|
|
if(csio.ccb_h.flags.HasFlag(ccb_flags.CAM_CDB_POINTER))
|
|
Marshal.Copy(new IntPtr(BitConverter.ToInt32(csio.cdb_bytes, 0)), cdb, 0, cdb.Length);
|
|
else
|
|
Array.Copy(csio.cdb_bytes, 0, cdb, 0, cdb.Length);
|
|
duration = (end - start).TotalMilliseconds;
|
|
|
|
if(csio.ccb_h.flags.HasFlag(ccb_flags.CAM_CDB_POINTER))
|
|
Marshal.FreeHGlobal(cdbPtr);
|
|
Marshal.FreeHGlobal(csio.data_ptr);
|
|
cam_freeccb(ccbPtr);
|
|
|
|
return error;
|
|
}
|
|
}
|
|
}
|
|
|