Windows: Add mount option that allows mounting a volume without attaching it to the specified drive letter. This is useful in situation where Windows has issue with the filesystem (e.g. ReFS on Windows 10 1809) and we need to use third party software to be able to use the filesystem under Windows through low level VeraCrypt virtual device (e.g. \Device\VeraCryptVolumeX).

author: Mounir IDRASSI <mounir.idrassi@idrix.fr> 2018-12-19 00:38:56 +0100
committer: Mounir IDRASSI <mounir.idrassi@idrix.fr> 2018-12-19 00:41:37 +0100
commit: 1967bd862eaa5130260a7d7beea9657778718c31 (patch)
tree: e451e2d899e2b6f0ffb7ca3beaa795d42de9497e
parent: 6abc59acd204ce59f53b218cafc01ced955695cd (diff)
download: VeraCrypt-1967bd862eaa5130260a7d7beea9657778718c31.tar.gz
VeraCrypt-1967bd862eaa5130260a7d7beea9657778718c31.zip
8 files changed, 84 insertions, 39 deletions
diff --git a/src/Common/Apidrvr.h b/src/Common/Apidrvr.h
index 2c436bf9..5c6de908 100644
--- a/src/Common/Apidrvr.h
+++ b/src/Common/Apidrvr.h
@@ -210,6 +210,7 @@ typedef struct
 	BOOL hiddenVolume;
 	BOOL readOnly;
 	BOOL removable;
+	BOOL mountDisabled;
 	BOOL partitionInInactiveSysEncScope;
 	uint32 volumeHeaderFlags;
 	unsigned __int64 totalBytesRead;
diff --git a/src/Common/Common.h b/src/Common/Common.h
index 0620b652..02b2929a 100644
--- a/src/Common/Common.h
+++ b/src/Common/Common.h
@@ -92,6 +92,7 @@ typedef struct
 	int ProtectedHidVolPkcs5Prf;
 	int ProtectedHidVolPim;
 	wchar_t Label[33]; /* maximum label length is 32 for NTFS and 11 for FAT32 */
+	BOOL DisableMountManager;
 } MountOptions;
 
 #endif
diff --git a/src/Common/Common.rc b/src/Common/Common.rc
index 5668800a..249a1329 100644
--- a/src/Common/Common.rc
+++ b/src/Common/Common.rc
@@ -65,7 +65,7 @@ BEGIN
     PUSHBUTTON      "Cancel",IDCANCEL,248,190,50,14
 END
 
-IDD_MOUNT_OPTIONS DIALOGEX 0, 0, 277, 231
+IDD_MOUNT_OPTIONS DIALOGEX 0, 0, 277, 244
 STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
 CAPTION "VeraCrypt - Mount Options"
 FONT 8, "MS Shell Dlg", 400, 0, 0x1
@@ -77,25 +77,27 @@ BEGIN
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,12,39,257,11
     CONTROL         "Mount partition &using system encryption without pre-boot authentication",IDC_MOUNT_SYSENC_PART_WITHOUT_PBA,
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,12,53,259,11
-    EDITTEXT        IDC_VOLUME_LABEL,112,67,150,14,ES_AUTOHSCROLL
+    EDITTEXT        IDC_VOLUME_LABEL,112,82,150,14,ES_AUTOHSCROLL
     CONTROL         "&Protect hidden volume against damage caused by writing to outer volume",IDC_PROTECT_HIDDEN_VOL,
-                    "Button",BS_AUTOCHECKBOX | WS_TABSTOP,16,97,252,10
-    EDITTEXT        IDC_PASSWORD_PROT_HIDVOL,112,115,151,14,ES_PASSWORD | ES_AUTOHSCROLL
-    COMBOBOX        IDC_PKCS5_PRF_ID,112,136,91,90,CBS_DROPDOWNLIST | WS_TABSTOP
-    EDITTEXT        IDC_PIM,112,156,42,14,ES_RIGHT | ES_PASSWORD | ES_AUTOHSCROLL | ES_NUMBER | NOT WS_VISIBLE
-    CONTROL         "Use P&IM",IDC_PIM_ENABLE,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,161,97,10
-    LTEXT           "(Empty or 0 for default iterations)",IDC_PIM_HELP,158,159,112,8,NOT WS_VISIBLE
-    CONTROL         "&Display password",IDC_SHOW_PASSWORD_MO,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,174,90,10
-    CONTROL         "U&se keyfiles",IDC_KEYFILES_ENABLE_HIDVOL_PROT,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,187,90,10
-    PUSHBUTTON      "&Keyfiles...",IDC_KEYFILES_HIDVOL_PROT,204,183,60,14
+                    "Button",BS_AUTOCHECKBOX | WS_TABSTOP,16,115,252,10
+    EDITTEXT        IDC_PASSWORD_PROT_HIDVOL,112,133,151,14,ES_PASSWORD | ES_AUTOHSCROLL
+    COMBOBOX        IDC_PKCS5_PRF_ID,112,154,91,90,CBS_DROPDOWNLIST | WS_TABSTOP
+    EDITTEXT        IDC_PIM,112,174,42,14,ES_RIGHT | ES_PASSWORD | ES_AUTOHSCROLL | ES_NUMBER | NOT WS_VISIBLE
+    CONTROL         "Use P&IM",IDC_PIM_ENABLE,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,179,97,10
+    LTEXT           "(Empty or 0 for default iterations)",IDC_PIM_HELP,158,177,112,8,NOT WS_VISIBLE
+    CONTROL         "&Display password",IDC_SHOW_PASSWORD_MO,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,192,90,10
+    CONTROL         "U&se keyfiles",IDC_KEYFILES_ENABLE_HIDVOL_PROT,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,112,205,90,10
+    PUSHBUTTON      "&Keyfiles...",IDC_KEYFILES_HIDVOL_PROT,204,201,60,14
     DEFPUSHBUTTON   "OK",IDOK,211,7,60,14
     PUSHBUTTON      "Cancel",IDCANCEL,211,24,60,14
-    LTEXT           "What is hidden volume protection?",IDC_LINK_HIDVOL_PROTECTION_INFO,16,202,247,10,SS_NOTIFY
-    RTEXT           "P&assword to hidden volume:\n(if empty, cache is used)",IDT_HIDDEN_PROT_PASSWD,15,114,91,17,0,WS_EX_RIGHT
-    GROUPBOX        "Hidden Volume Protection",IDT_HIDDEN_VOL_PROTECTION,6,83,265,136
-    RTEXT           "PKCS-5 PRF:",IDT_PKCS5_PRF,15,137,91,17
-    RTEXT           "Volume PIM:",IDT_PIM,15,159,91,17,NOT WS_VISIBLE
-    LTEXT           "Volume Label in Windows:",IDT_VOLUME_LABEL,12,70,95,8
+    LTEXT           "What is hidden volume protection?",IDC_LINK_HIDVOL_PROTECTION_INFO,16,220,247,10,SS_NOTIFY
+    RTEXT           "P&assword to hidden volume:\n(if empty, cache is used)",IDT_HIDDEN_PROT_PASSWD,15,132,91,17,0,WS_EX_RIGHT
+    GROUPBOX        "Hidden Volume Protection",IDT_HIDDEN_VOL_PROTECTION,6,101,265,136
+    RTEXT           "PKCS-5 PRF:",IDT_PKCS5_PRF,15,155,91,17
+    RTEXT           "Volume PIM:",IDT_PIM,15,177,91,17,NOT WS_VISIBLE
+    LTEXT           "Volume Label in Windows:",IDT_VOLUME_LABEL,12,85,95,8
+    CONTROL         "Only create virtual device without mounting on selected drive letter",IDC_DISABLE_MOUNT_MANAGER,
+                    "Button",BS_AUTOCHECKBOX | WS_TABSTOP,12,67,231,10
 END
 
 IDD_KEYFILES DIALOGEX 0, 0, 363, 251
@@ -374,7 +376,7 @@ BEGIN
     BEGIN
         LEFTMARGIN, 7
         TOPMARGIN, 7
-        BOTTOMMARGIN, 225
+        BOTTOMMARGIN, 238
     END
 
     IDD_KEYFILES, DIALOG
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index f9b6f327..448ee1ab 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -8049,16 +8049,15 @@ retry:
 	mount.bMountReadOnly = mountOptions->ReadOnly;
 	mount.bMountRemovable = mountOptions->Removable;
 	mount.bPreserveTimestamp = mountOptions->PreserveTimestamp;
-
-	mount.bMountManager = TRUE;
+	
+	if (mountOptions->DisableMountManager)
+		mount.bMountManager = FALSE;
+	else
+		mount.bMountManager = TRUE;
 	mount.pkcs5_prf = pkcs5;
 	mount.bTrueCryptMode = truecryptMode;
 	mount.VolumePim = pim;
 
-	// Windows 2000 mount manager causes problems with remounted volumes
-	if (CurrentOSMajor == 5 && CurrentOSMinor == 0)
-		mount.bMountManager = FALSE;
-
 	wstring path = volumePath;
 	if (path.find (L"\\\\?\\") == 0)
 	{
diff --git a/src/Common/Language.xml b/src/Common/Language.xml
index 88b5e0fd..5fc4ce7d 100644
--- a/src/Common/Language.xml
+++ b/src/Common/Language.xml
@@ -1427,6 +1427,8 @@
     <entry lang="en" key="VOLUME_TOO_LARGE_FOR_HOST">ERROR: The size of the file container is larger than the available free space on disk.</entry>
     <entry lang="en" key="IDC_ALLOW_WINDOWS_DEFRAG">Allow Windows Disk Defragmenter to defragment non-system partition/drive</entry>    
     <entry lang="en" key="CONFIRM_ALLOW_WINDOWS_DEFRAG">WARNING: Defragmenting non-system partitions/drives may leak metadata about their content or cause issues with hidden volumes they may contain.\n\nContinue?</entry>
+    <entry lang="en" key="VIRTUAL_DEVICE">Virtual Device</entry>
+    <entry lang="en" key="MOUNTED_VOLUME_NOT_ASSOCIATED">The selected mounted volume is not associated with its drive letter in Windows and so it can not be opened in Windows Explorer.</entry>
   </localization>
   <xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
     <xs:element name="VeraCrypt">
diff --git a/src/Common/Resource.h b/src/Common/Resource.h
index 7106b3b8..a913bc26 100644
--- a/src/Common/Resource.h
+++ b/src/Common/Resource.h
@@ -223,6 +223,7 @@
 #define IDC_BENCHMARK_LIST              5139
 #define IDC_BENCHMARK_PREBOOT           5140
 #define IDD_TEXT_EDIT_DLG               5141
+#define IDC_DISABLE_MOUNT_MANAGER       5142
 
 // Next default values for new objects
 // 
@@ -231,7 +232,7 @@
 #define _APS_NO_MFC                     1
 #define _APS_NEXT_RESOURCE_VALUE        578
 #define _APS_NEXT_COMMAND_VALUE         40001
-#define _APS_NEXT_CONTROL_VALUE         5141
+#define _APS_NEXT_CONTROL_VALUE         5143
 #define _APS_NEXT_SYMED_VALUE           101
 #endif
 #endif
diff --git a/src/Driver/Ntdriver.c b/src/Driver/Ntdriver.c
index 582df290..e4e39bc0 100644
--- a/src/Driver/Ntdriver.c
+++ b/src/Driver/Ntdriver.c
@@ -1090,8 +1090,8 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
 						}
 					}
 				}
-			}
-		}
+					}
+				}
 
 		break;
 
@@ -1701,9 +1701,9 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION
 		Irp->IoStatus.Information = 0;		
 		break;
 	default:
-		Dump ("ProcessVolumeDeviceControlIrp (unknown code 0x%.8X)\n", irpSp->Parameters.DeviceIoControl.IoControlCode);
-		return TCCompleteIrp (Irp, STATUS_INVALID_DEVICE_REQUEST, 0);
-	}
+				Dump ("ProcessVolumeDeviceControlIrp (unknown code 0x%.8X)\n", irpSp->Parameters.DeviceIoControl.IoControlCode);
+				return TCCompleteIrp (Irp, STATUS_INVALID_DEVICE_REQUEST, 0);
+			}
 
 #if defined(DEBUG) || defined (DEBG_TRACE)
 	if (!NT_SUCCESS (Irp->IoStatus.Status))
@@ -2209,6 +2209,7 @@ NTSTATUS ProcessMainDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION Ex
 					prop->volumeHeaderFlags = ListExtension->cryptoInfo->HeaderFlags;
 					prop->readOnly = ListExtension->bReadOnly;
 					prop->removable = ListExtension->bRemovable;
+					prop->mountDisabled = ListExtension->bMountManager? FALSE : TRUE;
 					prop->partitionInInactiveSysEncScope = ListExtension->PartitionInInactiveSysEncScope;
 					prop->hiddenVolume = ListExtension->cryptoInfo->hiddenVolume;
 
@@ -3782,14 +3783,15 @@ NTSTATUS MountDevice (PDEVICE_OBJECT DeviceObject, MOUNT_STRUCT *mount)
 				}
 
 				if (mount->bMountManager)
+				{
 					MountManagerMount (mount);
+					// We create symbolic link even if mount manager is notified of
+					// arriving volume as it apparently sometimes fails to create the link
+					CreateDriveLink (mount->nDosDriveNo);
+				}
 
 				NewExtension->bMountManager = mount->bMountManager;
 
-				// We create symbolic link even if mount manager is notified of
-				// arriving volume as it apparently sometimes fails to create the link
-				CreateDriveLink (mount->nDosDriveNo);
-
 				mount->FilesystemDirty = FALSE;
 
 				if (NT_SUCCESS (TCOpenFsVolume (NewExtension, &volumeHandle, &volumeFileObject)))
diff --git a/src/Mount/Mount.c b/src/Mount/Mount.c
index ebae35f8..5a5b877a 100644
--- a/src/Mount/Mount.c
+++ b/src/Mount/Mount.c
@@ -3537,6 +3537,8 @@ BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM
 				mountOptions->Removable ? BST_CHECKED : BST_UNCHECKED, 0);
 			SendDlgItemMessage (hwndDlg, IDC_PROTECT_HIDDEN_VOL, BM_SETCHECK,
 				mountOptions->ProtectHiddenVolume ? BST_CHECKED : BST_UNCHECKED, 0);
+			SendDlgItemMessage (hwndDlg, IDC_PROTECT_HIDDEN_VOL, BM_SETCHECK,
+				mountOptions->DisableMountManager ? BST_CHECKED : BST_UNCHECKED, 0);
 
 			SendDlgItemMessage (hwndDlg, IDC_PROTECT_HIDDEN_VOL, BM_SETCHECK,
 				mountOptions->ProtectHiddenVolume ? BST_CHECKED : BST_UNCHECKED, 0);
@@ -3554,6 +3556,10 @@ BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM
 			SetDlgItemTextW (hwndDlg, IDC_VOLUME_LABEL, mountOptions->Label);
 			SendDlgItemMessage (hwndDlg, IDC_VOLUME_LABEL, EM_LIMITTEXT, 32, 0); // 32 is the maximum possible length for a drive label in Windows
 
+			protect = IsButtonChecked (GetDlgItem (hwndDlg, IDC_DISABLE_MOUNT_MANAGER));
+			EnableWindow (GetDlgItem (hwndDlg, IDC_VOLUME_LABEL), !protect);
+			EnableWindow (GetDlgItem (hwndDlg, IDT_VOLUME_LABEL), !protect);
+
 			/* Add PRF algorithm list for hidden volume password */
 			HWND hComboBox = GetDlgItem (hwndDlg, IDC_PKCS5_PRF_ID);
 			SendMessage (hComboBox, CB_RESETCONTENT, 0, 0);
@@ -3700,6 +3706,7 @@ BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM
 
 			mountOptions->ReadOnly = IsButtonChecked (GetDlgItem (hwndDlg, IDC_MOUNT_READONLY));
 			mountOptions->Removable = IsButtonChecked (GetDlgItem (hwndDlg, IDC_MOUNT_REMOVABLE));
+			mountOptions->DisableMountManager = IsButtonChecked (GetDlgItem (hwndDlg, IDC_DISABLE_MOUNT_MANAGER));
 			mountOptions->ProtectHiddenVolume = IsButtonChecked (GetDlgItem (hwndDlg, IDC_PROTECT_HIDDEN_VOL));
 			mountOptions->PartitionInInactiveSysEncScope = IsButtonChecked (GetDlgItem (hwndDlg, IDC_MOUNT_SYSENC_PART_WITHOUT_PBA));
 			mountOptions->UseBackupHeader = IsButtonChecked (GetDlgItem (hwndDlg, IDC_USE_EMBEDDED_HEADER_BAK));
@@ -3736,7 +3743,7 @@ BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM
 			return 1;
 		}
 
-		if (lw == IDC_MOUNT_READONLY || lw == IDC_PROTECT_HIDDEN_VOL)
+		if (lw == IDC_MOUNT_READONLY || lw == IDC_PROTECT_HIDDEN_VOL || lw == IDC_DISABLE_MOUNT_MANAGER)
 		{
 			BOOL protect;
 
@@ -3747,6 +3754,12 @@ BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM
 				EnableWindow (GetDlgItem (hwndDlg, IDT_HIDDEN_VOL_PROTECTION), !IsButtonChecked (GetDlgItem (hwndDlg, IDC_MOUNT_READONLY)));
 			}
 
+			if (lw == IDC_DISABLE_MOUNT_MANAGER)
+			{
+				EnableWindow (GetDlgItem (hwndDlg, IDC_VOLUME_LABEL), !IsButtonChecked (GetDlgItem (hwndDlg, IDC_DISABLE_MOUNT_MANAGER)));
+				EnableWindow (GetDlgItem (hwndDlg, IDT_VOLUME_LABEL), !IsButtonChecked (GetDlgItem (hwndDlg, IDC_DISABLE_MOUNT_MANAGER)));
+			}
+
 			protect = IsButtonChecked (GetDlgItem (hwndDlg, IDC_PROTECT_HIDDEN_VOL));
 
 			EnableWindow (GetDlgItem (hwndDlg, IDC_PASSWORD_PROT_HIDVOL), protect);
@@ -4000,6 +4013,14 @@ BOOL CALLBACK VolumePropertiesDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LP
 			else
 				ListSubItemSet (list, i++, 1, (wchar_t *) (prop.wszVolume[1] != L'?' ? prop.wszVolume : prop.wszVolume + 4));
 
+			if (!bSysEnc && prop.mountDisabled)
+			{
+				// Virtual Device
+				StringCbPrintfW (szTmp, sizeof(szTmp), L"\\Device\\VeraCryptVolume%c", (wchar_t) prop.driveNo + L'A');
+				ListItemAdd (list, i, GetString ("VIRTUAL_DEVICE"));
+				ListSubItemSet (list, i++, 1, szTmp);
+			}
+
 			if (!bSysEnc && IsVolumeDeviceHosted ((wchar_t *) (prop.wszVolume[1] != L'?' ? prop.wszVolume : prop.wszVolume + 4)))
 			{
 				// Volume ID
@@ -7742,10 +7763,26 @@ BOOL CALLBACK MainDialogProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lPa
 				nSelectedDriveIndex = ((LPNMITEMACTIVATE)lParam)->iItem;
 				if (LOWORD(state) == TC_MLIST_ITEM_NONSYS_VOL || LOWORD(state) == TC_MLIST_ITEM_SYS_PARTITION)
 				{
-					// Open explorer window for mounted volume
-					WaitCursor ();
-					OpenVolumeExplorerWindow (HIWORD(state) - L'A');
-					NormalCursor ();
+					VOLUME_PROPERTIES_STRUCT prop;
+					DWORD dwResult;
+
+					memset (&prop, 0, sizeof(prop));
+					prop.driveNo = HIWORD (state) - L'A';
+
+					if (DeviceIoControl (hDriver, TC_IOCTL_GET_VOLUME_PROPERTIES, &prop, sizeof (prop), &prop, sizeof (prop), &dwResult, NULL) 
+						&& dwResult
+						&& prop.mountDisabled
+						)
+					{
+						Warning ("MOUNTED_VOLUME_NOT_ASSOCIATED", hwndDlg);
+					}
+					else
+					{
+						// Open explorer window for mounted volume
+						WaitCursor ();
+						OpenVolumeExplorerWindow (HIWORD(state) - L'A');
+						NormalCursor ();
+					}
 				}
 				else if (LOWORD (GetSelectedLong (GetDlgItem (hwndDlg, IDC_DRIVELIST))) == TC_MLIST_ITEM_FREE)
 				{
author	Mounir IDRASSI <mounir.idrassi@idrix.fr>	2018-12-19 00:38:56 +0100
committer	Mounir IDRASSI <mounir.idrassi@idrix.fr>	2018-12-19 00:41:37 +0100
commit	1967bd862eaa5130260a7d7beea9657778718c31 (patch)
tree	e451e2d899e2b6f0ffb7ca3beaa795d42de9497e
parent	6abc59acd204ce59f53b218cafc01ced955695cd (diff)
download	VeraCrypt-1967bd862eaa5130260a7d7beea9657778718c31.tar.gz VeraCrypt-1967bd862eaa5130260a7d7beea9657778718c31.zip