//{{NO_DEPENDENCIES}} // Microsoft Visual C++ generated include file. // Used by Common.rc // #define IDI_TRUECRYPT_ICON 501 #define IDI_TRUECRYPT_VOL_ICON 502 #define IDD_BENCHMARK_DLG 503 #define IDD_MOUNT_OPTIONS 504 #define IDD_KEYFILES 505 #define IDR_LANGUAGE 506 #define IDI_TRUECRYPT 507 #define IDD_ABOUT_DLG 508 #define IDD_COMMANDHELP_DLG 509 #define IDD_RAWDEVICES_DLG 510 #define IDC_HOMEPAGE 511 #define IDR_COMMON_RSRC_HEADER 512 #define IDD_LANGUAGE 513 #define IDD_CIPHER_TEST_DLG 514 #define IDR_LICENSE 515 #define IDD_AUXILIARY_DLG 516 #define IDB_TEXTUAL_LOGO_BKG 517 #define IDB_TEXTUAL_LOGO_96DPI 518 #define IDB_TEXTUAL_LOGO_288DPI 519 #define IDR_BOOT_SECTOR 520 #define IDR_BOOT_SECTOR_AES 521 #define IDR_BOOT_SECTOR_SERPENT 522 #define IDR_BOOT_SECTOR_TWOFISH 523 #define IDR_BOOT_LOADER_DECOMPRESSOR 524 #define IDR_BOOT_LOADER 525 #define IDR_BOOT_LOADER_AES 526 #define IDR_BOOT_LOADER_SERPENT 527 #define IDR_BOOT_LOADER_TWOFISH 528 #define IDR_RESCUE_BOOT_SECTOR 529 #define IDR_RESCUE_BOOT_SECTOR_AES 530 #define IDR_RESCUE_BOOT_SECTOR_SERPENT 531 #define IDR_RESCUE_BOOT_SECTOR_TWOFISH 532 #define IDR_RESCUE_LOADER 533 #define IDR_RESCUE_LOADER_AES 534 #define IDR_RESCUE_LOADER_SERPENT 535 #define IDR_RESCUE_LOADER_TWOFISH 536 #define IDD_TOKEN_PASSWORD 537 #define IDD_TOKEN_KEYFILES 538 #define IDD_NEW_TOKEN_KEYFILE 539 #define IDD_RANDOM_POOL_ENRICHMENT 540 #define IDI_TRUECRYPT_MOUNTED_ICON 541 #define IDC_HW_AES_LABEL_LINK 5000 #define IDC_HW_AES 5001 #define IDC_PARALLELIZATION_LABEL_LINK 5002 #define IDC_PARALLELIZATION 5003 #define IDT_TOKEN_PASSWORD 5004 #define IDC_PRINT 5005 #define IDC_KEY 5006 #define IDC_PLAINTEXT 5007 #define IDC_CIPHERTEXT 5008 #define IDC_INFO_BOX_TEXT 5009 #define IDC_SECONDARY_KEY 5010 #define IDD_TEXT_INFO_DIALOG_BOX_DLG 5011 #define IDC_TEST_DATA_UNIT_NUMBER 5012 #define IDD_KEYFILE_GENERATOR 5013 #define IDC_CIPHER 5014 #define IDD_MULTI_CHOICE_DLG 5015 #define IDC_TEST_BLOCK_NUMBER 5016 #define IDD_STATIC_MODELESS_WAIT_DLG 5017 #define IDC_POOL_CONTENTS 5018 #define IDC_PRF_ID 5019 #define IDC_KEY_SIZE 5020 #define IDC_PLAINTEXT_SIZE 5021 #define IDC_REDTICK 5022 #define IDC_TESTS_MESSAGE 5023 #define IDC_RESET 5024 #define IDC_AUTO 5025 #define IDC_DECRYPT 5026 #define IDT_TEST_KEY 5027 #define IDT_TEST_PLAINTEXT 5028 #define IDT_PRF 5029 #define IDT_XTS_MODE 5030 #define IDT_TEST_CIPHERTEXT 5031 #define IDT_KEY 5032 #define IDT_PLAINTEXT 5033 #define IDC_ENCRYPT 5034 #define IDT_KEY_UNIT 5035 #define IDT_CIPHER 5036 #define IDT_PLAINTEXT_SIZE_UNIT 5037 #define IDC_DEVICELIST 5038 #define IDT_TEST_BLOCK_NUMBER 5039 #define IDT_SECONDARY_KEY 5040 #define IDC_PERFORM_BENCHMARK 5041 #define IDT_TEST_DATA_UNIT_NUMBER 5042 #define IDC_KEYFILES_HIDVOL_PROT 5043 #define IDC_KEYLIST 5044 #define IDC_ABOUT_BKG 5045 #define IDT_ABOUT_VERSION 5046 #define IDT_BOX_BENCHMARK_INFO 5047 #define IDC_ABOUT_CREDITS 5048 #define IDT_SORT_METHOD 5049 #define IDC_MOUNT_READONLY 5050 #define IDC_MOUNT_REMOVABLE 5051 #define IDC_PROTECT_HIDDEN_VOL 5052 #define IDC_COMMANDHELP_TEXT 5053 #define IDC_USE_EMBEDDED_HEADER_BAK 5054 #define IDC_MOUNT_SYSENC_PART_WITHOUT_PBA 5055 #define IDT_HIDDEN_PROT_PASSWD 5056 #define IDC_RESULTS 5057 #define IDC_KEYADD 5058 #define IDC_KEYREMOVE 5059 #define IDC_KEYREMOVEALL 5060 #define IDC_KEYFILES_ENABLE 5061 #define IDT_HIDDEN_VOL_PROTECTION 5062 #define IDC_ADD_KEYFILE_PATH 5063 #define IDC_BENCHMARK_BUFFER_SIZE 5064 #define IDC_SHOW_PASSWORD_MO 5065 #define IDC_GENERATE_KEYFILE 5066 #define IDC_BENCHMARK_SORT_METHOD 5067 #define IDC_PASSWORD_PROT_HIDVOL 5068 #define IDT_BUFFER_SIZE 5069 #define IDC_LANGLIST 5070 #define IDC_KEYFILES_ENABLE_HIDVOL_PROT 5071 #define IDT_KEYFILES_NOTE 5072 #define IDT_KEYFILE_WARNING 5073 #define IDT_KEYFILE_GENERATOR_NOTE 5074 #define IDC_GENERATE_AND_SAVE_KEYFILE 5075 #define IDT_POOL_CONTENTS 5076 #define IDC_GET_LANG_PACKS 5077 #define IDT_LANGPACK_AUTHORS 5078 #define IDC_LANGPACK_CREDITS 5079 #define IDC_LANGPACK_VERSION 5080 #define IDT_ACTIVE_LANG_PACK 5081 #define IDC_DISPLAY_POOL_CONTENTS 5082 #define IDC_XTS_MODE_ENABLED 5083 #define IDC_MULTI_CHOICE_MSG 5084 #define IDC_CHOICE1 5085 #define IDC_CHOICE5 5086 #define IDC_CHOICE2 5087 #define IDC_CHOICE3 5088 #define IDC_CHOICE4 5089 #define IDC_CHOICE6 5090 #define IDC_CHOICE7 5091 #define IDC_CHOICE8 5092 #define IDC_CHOICE9 5093 #define IDC_CHOICE10 5094 #define IDC_MC_DLG_HR1 5095 #define IDC_MC_DLG_HR2 5096 #define IDC_LINK_HIDVOL_PROTECTION_INFO 5097 #define IDC_LINK_KEYFILES_INFO 5098 #define IDC_TEXTUAL_LOGO_IMG 5099 #define IDC_ASPECT_RATIO_CALIBRATION_BOX 5100 #define IDC_ABOUT_LOGO_AREA 5101 #define IDC_TOKEN_PASSWORD 5102 #define IDC_TOKEN_FILE_LIST 5103 #define IDC_TOKEN_FILES_ADD 5104 #define IDC_EXPORT 5105 #define IDC_DELETE 5106 #define IDC_IMPORT_KEYFILE 5107 #define IDC_SELECTED_TOKEN 5108 #define IDT_SECURITY_TOKEN 5109 #define IDT_TOKEN_KEYFILE_NAME 5110 #define IDC_TOKEN_KEYFILE_NAME 5111 #define IDT_TOKEN_PASSWORD_INFO 5112 #define IDT_RANDOM_POOL_ENRICHMENT_NOTE 5113 #define IDC_CONTINUE 5114 #define IDT_ABOUT_RELEASE 5115 #define IDT_STATIC_MODELESS_WAIT_DLG_INFO 5116 // Next default values for new objects // #ifdef APSTUDIO_INVOKED #ifndef APSTUDIO_READONLY_SYMBOLS #define _APS_NO_MFC 1 #define _APS_NEXT_RESOURCE_VALUE 542 #define _APS_NEXT_COMMAND_VALUE 40001 #define _APS_NEXT_CONTROL_VALUE 5117 #define _APS_NEXT_SYMED_VALUE 101 #endif #endif /a> 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 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/*
 Legal Notice: Some portions of the source code contained in this file were
 derived from the source code of TrueCrypt 7.1a, which is
 Copyright (c) 2003-2012 TrueCrypt Developers Association and which is
 governed by the TrueCrypt License 3.0, also from the source code of
 Encryption for the Masses 2.02a, which is Copyright (c) 1998-2000 Paul Le Roux
 and which is governed by the 'License Agreement for Encryption for the Masses'
 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2016 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages. */

#include "TCdefs.h"
#include <wchar.h>
#include "Crypto.h"
#include "Volumes.h"

#include "Apidrvr.h"
#include "DriveFilter.h"
#include "Ntdriver.h"
#include "Ntvol.h"
#include "VolumeFilter.h"

#include "Boot/Windows/BootCommon.h"

#include "Cache.h"

#if 0 && _DEBUG
#define EXTRA_INFO 1
#endif

#pragma warning( disable : 4127 )

#include <Ntstrsafe.h>

volatile BOOL ProbingHostDeviceForWrite = FALSE;


NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
	       PEXTENSION Extension,
	       MOUNT_STRUCT *mount,
	       PWSTR pwszMountVolume,
	       BOOL bRawDevice)
{
	FILE_STANDARD_INFORMATION FileStandardInfo;
	FILE_BASIC_INFORMATION FileBasicInfo;
	OBJECT_ATTRIBUTES oaFileAttributes;
	UNICODE_STRING FullFileName;
	IO_STATUS_BLOCK IoStatusBlock;
	PCRYPTO_INFO cryptoInfoPtr = NULL;
	PCRYPTO_INFO tmpCryptoInfo = NULL;
	LARGE_INTEGER lDiskLength;
	__int64 partitionStartingOffset = 0;
	int volumeType;
	char *readBuffer = 0;
	NTSTATUS ntStatus = 0;
	BOOL forceAccessCheck = (!bRawDevice && !(OsMajorVersion == 5 &&OsMinorVersion == 0)); // Windows 2000 does not support OBJ_FORCE_ACCESS_CHECK attribute
	BOOL disableBuffering = TRUE;
	BOOL exclusiveAccess = mount->bExclusiveAccess;

	Extension->pfoDeviceFile = NULL;
	Extension->hDeviceFile = NULL;
	Extension->bTimeStampValid = FALSE;

	RtlInitUnicodeString (&FullFileName, pwszMountVolume);
	InitializeObjectAttributes (&oaFileAttributes, &FullFileName, OBJ_CASE_INSENSITIVE | (forceAccessCheck ? OBJ_FORCE_ACCESS_CHECK : 0) | OBJ_KERNEL_HANDLE, NULL, NULL);
	KeInitializeEvent (&Extension->keVolumeEvent, NotificationEvent, FALSE);

	if (Extension->SecurityClientContextValid)
	{
		ntStatus = SeImpersonateClientEx (&Extension->SecurityClientContext, NULL);
		if (!NT_SUCCESS (ntStatus))
			goto error;
	}

	mount->VolumeMountedReadOnlyAfterDeviceWriteProtected = FALSE;

	// If we are opening a device, query its size first
	if (bRawDevice)
	{
		PARTITION_INFORMATION pi;
		PARTITION_INFORMATION_EX pix;
		LARGE_INTEGER diskLengthInfo;
		DISK_GEOMETRY dg;
		STORAGE_PROPERTY_QUERY storagePropertyQuery = {0};
		STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR storageDescriptor = {0};

		ntStatus = IoGetDeviceObjectPointer (&FullFileName,
			FILE_READ_DATA | FILE_READ_ATTRIBUTES,
			&Extension->pfoDeviceFile,
			&Extension->pFsdDevice);

		if (!NT_SUCCESS (ntStatus))
			goto error;

		ntStatus = TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_DRIVE_GEOMETRY, (char *) &dg, sizeof (dg));
		if (!NT_SUCCESS (ntStatus))
			goto error;

		lDiskLength.QuadPart = dg.Cylinders.QuadPart * dg.SectorsPerTrack * dg.TracksPerCylinder * dg.BytesPerSector;
		Extension->HostBytesPerSector = dg.BytesPerSector;

		storagePropertyQuery.PropertyId = StorageAccessAlignmentProperty;
		storagePropertyQuery.QueryType = PropertyStandardQuery;

		/* IOCTL_STORAGE_QUERY_PROPERTY supported only on Vista and above */
		if (NT_SUCCESS (TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IOCTL_STORAGE_QUERY_PROPERTY,
			(char*) &storagePropertyQuery, sizeof(storagePropertyQuery),
			(char *) &storageDescriptor, sizeof (storageDescriptor))))
		{
			Extension->HostBytesPerPhysicalSector = storageDescriptor.BytesPerPhysicalSector;
		}
		else
		{
			Extension->HostBytesPerPhysicalSector = dg.BytesPerSector;
		}

		// Drive geometry is used only when IOCTL_DISK_GET_PARTITION_INFO fails
		if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_PARTITION_INFO_EX, (char *) &pix, sizeof (pix))))
		{
			lDiskLength.QuadPart = pix.PartitionLength.QuadPart;
			partitionStartingOffset = pix.StartingOffset.QuadPart;
		}
		// Windows 2000 does not support IOCTL_DISK_GET_PARTITION_INFO_EX
		else if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_PARTITION_INFO, (char *) &pi, sizeof (pi))))
		{
			lDiskLength.QuadPart = pi.PartitionLength.QuadPart;
			partitionStartingOffset = pi.StartingOffset.QuadPart;
		}
		else if (NT_SUCCESS (TCSendHostDeviceIoControlRequest (DeviceObject, Extension, IOCTL_DISK_GET_LENGTH_INFO, &diskLengthInfo, sizeof (diskLengthInfo))))
		{
			lDiskLength = diskLengthInfo;
		}

		ProbingHostDeviceForWrite = TRUE;

		if (!mount->bMountReadOnly
			&& TCSendHostDeviceIoControlRequest (DeviceObject, Extension,
				IsHiddenSystemRunning() ? TC_IOCTL_DISK_IS_WRITABLE : IOCTL_DISK_IS_WRITABLE, NULL, 0) == STATUS_MEDIA_WRITE_PROTECTED)
		{
			mount->bMountReadOnly = TRUE;
			DeviceObject->Characteristics |= FILE_READ_ONLY_DEVICE;
			mount->VolumeMountedReadOnlyAfterDeviceWriteProtected = TRUE;
		}

		ProbingHostDeviceForWrite = FALSE;

		// Some Windows tools (e.g. diskmgmt, diskpart, vssadmin) fail or experience timeouts when there is a raw device
		// open for exclusive access. Therefore, exclusive access is used only for file-hosted volumes.
		// Applications requiring a consistent device image need to acquire exclusive write access first. This is prevented
		// when a device-hosted volume is mounted.

		exclusiveAccess = FALSE;
	}
	else
	{
		// Limit the maximum required buffer size
		if (mount->BytesPerSector > 128 * BYTES_PER_KB)
		{
			ntStatus = STATUS_INVALID_PARAMETER;
			goto error;
		}

		Extension->HostBytesPerSector = mount->BytesPerSector;
		Extension->HostBytesPerPhysicalSector = mount->BytesPerPhysicalSector;

		if (Extension->HostBytesPerSector != TC_SECTOR_SIZE_FILE_HOSTED_VOLUME)
			disableBuffering = FALSE;
	}

	// Open the volume hosting file/device
	if (!mount->bMountReadOnly)
	{
		ntStatus = ZwCreateFile (&Extension->hDeviceFile,
			GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
			&oaFileAttributes,
			&IoStatusBlock,
			NULL,
			FILE_ATTRIBUTE_NORMAL |
			FILE_ATTRIBUTE_SYSTEM,
			exclusiveAccess ? 0 : FILE_SHARE_READ | FILE_SHARE_WRITE,
			FILE_OPEN,
			FILE_RANDOM_ACCESS |
			FILE_WRITE_THROUGH |
			(disableBuffering ? FILE_NO_INTERMEDIATE_BUFFERING : 0) |
			FILE_SYNCHRONOUS_IO_NONALERT,
			NULL,
			0);
	}

	/* 26-4-99 NT for some partitions returns this code, it is really a	access denied */
	if (ntStatus == 0xc000001b)
		ntStatus = STATUS_ACCESS_DENIED;

	mount->VolumeMountedReadOnlyAfterAccessDenied = FALSE;

	if (mount->bMountReadOnly || ntStatus == STATUS_ACCESS_DENIED)
	{
		ntStatus = ZwCreateFile (&Extension->hDeviceFile,
			GENERIC_READ | SYNCHRONIZE,
			&oaFileAttributes,
			&IoStatusBlock,
			NULL,
			FILE_ATTRIBUTE_NORMAL |
			FILE_ATTRIBUTE_SYSTEM,
			exclusiveAccess ? FILE_SHARE_READ : FILE_SHARE_READ | FILE_SHARE_WRITE,
			FILE_OPEN,
			FILE_RANDOM_ACCESS |
			FILE_WRITE_THROUGH |
			(disableBuffering ? FILE_NO_INTERMEDIATE_BUFFERING : 0) |
			FILE_SYNCHRONOUS_IO_NONALERT,
			NULL,
			0);

		if (NT_SUCCESS (ntStatus) && !mount->bMountReadOnly)
			mount->VolumeMountedReadOnlyAfterAccessDenied = TRUE;

		Extension->bReadOnly = TRUE;
		DeviceObject->Characteristics |= FILE_READ_ONLY_DEVICE;
	}
	else
		Extension->bReadOnly = FALSE;

	/* 26-4-99 NT for some partitions returns this code, it is really a
	access denied */
	if (ntStatus == 0xc000001b)
	{
		/* Partitions which return this code can still be opened with
		FILE_SHARE_READ but this causes NT problems elsewhere in
		particular if you do FILE_SHARE_READ NT will die later if
		anyone even tries to open the partition (or file for that
		matter...)  */
		ntStatus = STATUS_SHARING_VIOLATION;
	}

	if (!NT_SUCCESS (ntStatus))
	{
		goto error;
	}

	// If we have opened a file, query its size now
	if (bRawDevice == FALSE)
	{
		ntStatus = ZwQueryInformationFile (Extension->hDeviceFile,
			&IoStatusBlock,
			&FileBasicInfo,
			sizeof (FileBasicInfo),
			FileBasicInformation);

		if (NT_SUCCESS (ntStatus))
		{
			if (mount->bPreserveTimestamp)
			{
				Extension->fileCreationTime = FileBasicInfo.CreationTime;
				Extension->fileLastAccessTime = FileBasicInfo.LastAccessTime;
				Extension->fileLastWriteTime = FileBasicInfo.LastWriteTime;
				Extension->fileLastChangeTime = FileBasicInfo.ChangeTime;
				Extension->bTimeStampValid = TRUE;
			}

			ntStatus = ZwQueryInformationFile (Extension->hDeviceFile,
				&IoStatusBlock,
				&FileStandardInfo,
				sizeof (FileStandardInfo),
				FileStandardInformation);
		}

		if (!NT_SUCCESS (ntStatus))
		{
			Dump ("ZwQueryInformationFile failed while opening file: NTSTATUS 0x%08x\n",
				ntStatus);
			goto error;
		}

		lDiskLength.QuadPart = FileStandardInfo.EndOfFile.QuadPart;

		if (FileBasicInfo.FileAttributes & FILE_ATTRIBUTE_COMPRESSED)
		{
			Dump ("File \"%ls\" is marked as compressed - not supported!\n", pwszMountVolume);
			mount->nReturnCode = ERR_COMPRESSION_NOT_SUPPORTED;
			ntStatus = STATUS_SUCCESS;
			goto error;
		}

		ntStatus = ObReferenceObjectByHandle (Extension->hDeviceFile,
			FILE_ALL_ACCESS,
			*IoFileObjectType,
			KernelMode,
			&Extension->pfoDeviceFile,
			0);

		if (!NT_SUCCESS (ntStatus))
		{
			goto error;
		}

		/* Get the FSD device for the file (probably either NTFS or	FAT) */
		Extension->pFsdDevice = IoGetRelatedDeviceObject (Extension->pfoDeviceFile);
	}
	else
	{
		// Try to gain "raw" access to the partition in case there is a live filesystem on it (otherwise,
		// the NTFS driver guards hidden sectors and prevents mounting using a backup header e.g. after the user
		// accidentally quick-formats a dismounted partition-hosted TrueCrypt volume as NTFS).

		PFILE_OBJECT pfoTmpDeviceFile = NULL;

		if (NT_SUCCESS (ObReferenceObjectByHandle (Extension->hDeviceFile, FILE_ALL_ACCESS, *IoFileObjectType, KernelMode, &pfoTmpDeviceFile, NULL))
			&& pfoTmpDeviceFile != NULL)
		{
			TCFsctlCall (pfoTmpDeviceFile, FSCTL_ALLOW_EXTENDED_DASD_IO, NULL, 0, NULL, 0);
			ObDereferenceObject (pfoTmpDeviceFile);
		}
	}

	// Check volume size
	if (lDiskLength.QuadPart < TC_MIN_VOLUME_SIZE_LEGACY || lDiskLength.QuadPart > TC_MAX_VOLUME_SIZE)
	{
		mount->nReturnCode = ERR_VOL_SIZE_WRONG;
		ntStatus = STATUS_SUCCESS;
		goto error;
	}

	Extension->DiskLength = lDiskLength.QuadPart;
	Extension->HostLength = lDiskLength.QuadPart;

	readBuffer = TCalloc (max (max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, PAGE_SIZE), Extension->HostBytesPerSector));
	if (readBuffer == NULL)
	{
		ntStatus = STATUS_INSUFFICIENT_RESOURCES;
		goto error;
	}

	// Go through all volume types (e.g., normal, hidden)
	for (volumeType = TC_VOLUME_TYPE_NORMAL;
		volumeType < TC_VOLUME_TYPE_COUNT;
		volumeType++)
	{
		Dump ("Trying to open volume type %d\n", volumeType);

		/* Read the volume header */

		if (!mount->bPartitionInInactiveSysEncScope
			|| (mount->bPartitionInInactiveSysEncScope && volumeType == TC_VOLUME_TYPE_HIDDEN))
		{
			// Header of a volume that is not within the scope of system encryption, or
			// header of a system hidden volume (containing a hidden OS)

			LARGE_INTEGER headerOffset;

			if (mount->UseBackupHeader && lDiskLength.QuadPart <= TC_TOTAL_VOLUME_HEADERS_SIZE)
				continue;

			switch (volumeType)
			{
			case TC_VOLUME_TYPE_NORMAL:
				headerOffset.QuadPart = mount->UseBackupHeader ? lDiskLength.QuadPart - TC_VOLUME_HEADER_GROUP_SIZE : TC_VOLUME_HEADER_OFFSET;
				break;

			case TC_VOLUME_TYPE_HIDDEN:
				if (lDiskLength.QuadPart <= TC_VOLUME_HEADER_GROUP_SIZE)
					continue;

				headerOffset.QuadPart = mount->UseBackupHeader ? lDiskLength.QuadPart - TC_HIDDEN_VOLUME_HEADER_OFFSET : TC_HIDDEN_VOLUME_HEADER_OFFSET;
				break;
			}

			Dump ("Reading volume header at %I64d\n", headerOffset.QuadPart);

			ntStatus = ZwReadFile (Extension->hDeviceFile,
			NULL,
			NULL,
			NULL,
			&IoStatusBlock,
			readBuffer,
			bRawDevice ? max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, Extension->HostBytesPerSector) : TC_VOLUME_HEADER_EFFECTIVE_SIZE,
			&headerOffset,
			NULL);
		}
		else
		{
			// Header of a partition that is within the scope of system encryption

			WCHAR parentDrivePath [47+1] = {0};
			HANDLE hParentDeviceFile = NULL;
			UNICODE_STRING FullParentPath;
			OBJECT_ATTRIBUTES oaParentFileAttributes;
			LARGE_INTEGER parentKeyDataOffset;

			RtlStringCbPrintfW (parentDrivePath,
				sizeof (parentDrivePath),
				WIDE ("\\Device\\Harddisk%d\\Partition0"),
				mount->nPartitionInInactiveSysEncScopeDriveNo);

			Dump ("Mounting partition within scope of system encryption (reading key data from: %ls)\n", parentDrivePath);

			RtlInitUnicodeString (&FullParentPath, parentDrivePath);
			InitializeObjectAttributes (&oaParentFileAttributes, &FullParentPath, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,	NULL, NULL);

			ntStatus = ZwCreateFile (&hParentDeviceFile,
				GENERIC_READ | SYNCHRONIZE,
				&oaParentFileAttributes,
				&IoStatusBlock,
				NULL,
				FILE_ATTRIBUTE_NORMAL |
				FILE_ATTRIBUTE_SYSTEM,
				FILE_SHARE_READ | FILE_SHARE_WRITE,
				FILE_OPEN,
				FILE_RANDOM_ACCESS |
				FILE_WRITE_THROUGH |
				FILE_NO_INTERMEDIATE_BUFFERING |
				FILE_SYNCHRONOUS_IO_NONALERT,
				NULL,
				0);

			if (!NT_SUCCESS (ntStatus))
			{
				if (hParentDeviceFile != NULL)
					ZwClose (hParentDeviceFile);

				Dump ("Cannot open %ls\n", parentDrivePath);

				goto error;
			}

			parentKeyDataOffset.QuadPart = TC_BOOT_VOLUME_HEADER_SECTOR_OFFSET;

			ntStatus = ZwReadFile (hParentDeviceFile,
				NULL,
				NULL,
				NULL,
				&IoStatusBlock,
				readBuffer,
				max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, Extension->HostBytesPerSector),
				&parentKeyDataOffset,
				NULL);

			if (hParentDeviceFile != NULL)
				ZwClose (hParentDeviceFile);
		}

		if (!NT_SUCCESS (ntStatus) && ntStatus != STATUS_END_OF_FILE)
		{
			Dump ("Read failed: NTSTATUS 0x%08x\n", ntStatus);
			goto error;
		}

		if (ntStatus == STATUS_END_OF_FILE || IoStatusBlock.Information < TC_VOLUME_HEADER_EFFECTIVE_SIZE)
		{
			Dump ("Read didn't read enough data\n");

			// If FSCTL_ALLOW_EXTENDED_DASD_IO failed and there is a live filesystem on the partition, then the
			// filesystem driver may report EOF when we are reading hidden sectors (when the filesystem is
			// shorter than the partition). This can happen for example after the user quick-formats a dismounted
			// partition-hosted TrueCrypt volume and then tries to mount the volume using the embedded backup header.
			memset (readBuffer, 0, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
		}

		/* Attempt to recognize the volume (decrypt the header) */

		ReadVolumeHeaderRecoveryMode = mount->RecoveryMode;

		if ((volumeType == TC_VOLUME_TYPE_HIDDEN) && mount->bProtectHiddenVolume)
		{
			mount->nReturnCode = ReadVolumeHeaderWCache (
				FALSE,
				mount->bCache,
				mount->bCachePim,
				readBuffer,
				&mount->ProtectedHidVolPassword,
				mount->ProtectedHidVolPkcs5Prf,
				mount->ProtectedHidVolPim,
				mount->bTrueCryptMode,
				&tmpCryptoInfo);
		}
		else
		{
			mount->nReturnCode = ReadVolumeHeaderWCache (
				mount->bPartitionInInactiveSysEncScope && volumeType == TC_VOLUME_TYPE_NORMAL,
				mount->bCache,
				mount->bCachePim,
				readBuffer,
				&mount->VolumePassword,
				mount->pkcs5_prf,
				mount->VolumePim,
				mount->bTrueCryptMode,
				&Extension->cryptoInfo);
		}

		ReadVolumeHeaderRecoveryMode = FALSE;

		if (mount->nReturnCode == 0 || mount->nReturnCode == ERR_CIPHER_INIT_WEAK_KEY)
		{
			/* Volume header successfully decrypted */

			if (!Extension->cryptoInfo)
			{
				/* should never happen */
				mount->nReturnCode = ERR_OUTOFMEMORY;
				ntStatus = STATUS_SUCCESS;
				goto error;
			}

			Dump ("Volume header decrypted\n");
			Dump ("Required program version = %x\n", (int) Extension->cryptoInfo->RequiredProgramVersion);
			Dump ("Legacy volume = %d\n", (int) Extension->cryptoInfo->LegacyVolume);

			if (IsHiddenSystemRunning() && !Extension->cryptoInfo->hiddenVolume)
			{
				Extension->bReadOnly = mount->bMountReadOnly = TRUE;
				HiddenSysLeakProtectionCount++;
			}

			Extension->cryptoInfo->bProtectHiddenVolume = FALSE;
			Extension->cryptoInfo->bHiddenVolProtectionAction = FALSE;

			Extension->cryptoInfo->bPartitionInInactiveSysEncScope = mount->bPartitionInInactiveSysEncScope;

			/* compute the ID of this volume: SHA-512 of the effective header */
			sha256 (Extension->volumeID, readBuffer, TC_VOLUME_HEADER_EFFECTIVE_SIZE);

			if (volumeType == TC_VOLUME_TYPE_NORMAL)
			{
				if (mount->bPartitionInInactiveSysEncScope)
				{
					if (Extension->cryptoInfo->EncryptedAreaStart.Value > (unsigned __int64) partitionStartingOffset
						|| Extension->cryptoInfo->EncryptedAreaStart.Value + Extension->cryptoInfo->VolumeSize.Value <= (unsigned __int64) partitionStartingOffset)
					{
						// The partition is not within the key scope of system encryption
						mount->nReturnCode = ERR_PASSWORD_WRONG;
						ntStatus = STATUS_SUCCESS;
						goto error;
					}

					if (Extension->cryptoInfo->EncryptedAreaLength.Value != Extension->cryptoInfo->VolumeSize.Value)
					{
						// Partial encryption is not supported for volumes mounted as regular
						mount->nReturnCode = ERR_ENCRYPTION_NOT_COMPLETED;
						ntStatus = STATUS_SUCCESS;
						goto error;
					}
				}
				else if (Extension->cryptoInfo->HeaderFlags & TC_HEADER_FLAG_NONSYS_INPLACE_ENC)
				{
					if (Extension->cryptoInfo->EncryptedAreaLength.Value != Extension->cryptoInfo->VolumeSize.Value)
					{
						// Non-system in-place encryption process has not been completed on this volume
						mount->nReturnCode = ERR_NONSYS_INPLACE_ENC_INCOMPLETE;
						ntStatus = STATUS_SUCCESS;
						goto error;
					}
				}
			}

			Extension->cryptoInfo->FirstDataUnitNo.Value = 0;

			if (Extension->cryptoInfo->hiddenVolume && IsHiddenSystemRunning())
			{
				// Prevent mount of a hidden system partition if the system hosted on it is currently running
				if (memcmp (Extension->cryptoInfo->master_keydata, GetSystemDriveCryptoInfo()->master_keydata, EAGetKeySize (Extension->cryptoInfo->ea)) == 0)
				{
					mount->nReturnCode = ERR_VOL_ALREADY_MOUNTED;
					ntStatus = STATUS_SUCCESS;
					goto error;
				}
			}

			switch (volumeType)
			{
			case TC_VOLUME_TYPE_NORMAL:

				Extension->cryptoInfo->hiddenVolume = FALSE;

				if (mount->bPartitionInInactiveSysEncScope)
				{
					Extension->cryptoInfo->volDataAreaOffset = 0;
					Extension->DiskLength = lDiskLength.QuadPart;
					Extension->cryptoInfo->FirstDataUnitNo.Value = partitionStartingOffset / ENCRYPTION_DATA_UNIT_SIZE;
				}
				else if (Extension->cryptoInfo->LegacyVolume)
				{
					Extension->cryptoInfo->volDataAreaOffset = TC_VOLUME_HEADER_SIZE_LEGACY;
					Extension->DiskLength = lDiskLength.QuadPart - TC_VOLUME_HEADER_SIZE_LEGACY;
				}
				else
				{
					Extension->cryptoInfo->volDataAreaOffset = Extension->cryptoInfo->EncryptedAreaStart.Value;
					Extension->DiskLength = Extension->cryptoInfo->VolumeSize.Value;
				}

				break;

			case TC_VOLUME_TYPE_HIDDEN:

				cryptoInfoPtr = mount->bProtectHiddenVolume ? tmpCryptoInfo : Extension->cryptoInfo;

				Extension->cryptoInfo->hiddenVolumeOffset = cryptoInfoPtr->EncryptedAreaStart.Value;

				Dump ("Hidden volume offset = %I64d\n", Extension->cryptoInfo->hiddenVolumeOffset);
				Dump ("Hidden volume size = %I64d\n", cryptoInfoPtr->hiddenVolumeSize);
				Dump ("Hidden volume end = %I64d\n", Extension->cryptoInfo->hiddenVolumeOffset + cryptoInfoPtr->hiddenVolumeSize - 1);

				// Validate the offset
				if (Extension->cryptoInfo->hiddenVolumeOffset % ENCRYPTION_DATA_UNIT_SIZE != 0)
				{
					mount->nReturnCode = ERR_VOL_SIZE_WRONG;
					ntStatus = STATUS_SUCCESS;
					goto error;
				}

				// If we are supposed to actually mount the hidden volume (not just to protect it)
				if (!mount->bProtectHiddenVolume)
				{
					Extension->DiskLength = cryptoInfoPtr->hiddenVolumeSize;
					Extension->cryptoInfo->hiddenVolume = TRUE;
					Extension->cryptoInfo->volDataAreaOffset = Extension->cryptoInfo->hiddenVolumeOffset;
				}
				else
				{
					// Hidden volume protection
					Extension->cryptoInfo->hiddenVolume = FALSE;
					Extension->cryptoInfo->bProtectHiddenVolume = TRUE;

					Extension->cryptoInfo->hiddenVolumeProtectedSize = tmpCryptoInfo->hiddenVolumeSize;

					Dump ("Hidden volume protection active: %I64d-%I64d (%I64d)\n", Extension->cryptoInfo->hiddenVolumeOffset, Extension->cryptoInfo->hiddenVolumeProtectedSize + Extension->cryptoInfo->hiddenVolumeOffset - 1, Extension->cryptoInfo->hiddenVolumeProtectedSize);
				}

				break;
			}

			Dump ("Volume data offset = %I64d\n", Extension->cryptoInfo->volDataAreaOffset);
			Dump ("Volume data size = %I64d\n", Extension->DiskLength);
			Dump ("Volume data end = %I64d\n", Extension->cryptoInfo->volDataAreaOffset + Extension->DiskLength - 1);

			if (Extension->DiskLength == 0)
			{
				Dump ("Incorrect volume size\n");
				continue;
			}

			// If this is a hidden volume, make sure we are supposed to actually
			// mount it (i.e. not just to protect it)
			if (volumeType == TC_VOLUME_TYPE_NORMAL || !mount->bProtectHiddenVolume)
			{
				// Validate sector size
				if (bRawDevice && Extension->cryptoInfo->SectorSize != Extension->HostBytesPerSector)
				{
					mount->nReturnCode = ERR_PARAMETER_INCORRECT;
					ntStatus = STATUS_SUCCESS;
					goto error;
				}

				// Calculate virtual volume geometry
				Extension->TracksPerCylinder = 1;
				Extension->SectorsPerTrack = 1;
				Extension->BytesPerSector = Extension->cryptoInfo->SectorSize;
				Extension->NumberOfCylinders = Extension->DiskLength / Extension->BytesPerSector;
				Extension->PartitionType = 0;

				Extension->bRawDevice = bRawDevice;

				memset (Extension->wszVolume, 0, sizeof (Extension->wszVolume));
				if (wcsstr (pwszMountVolume, WIDE ("\\??\\UNC\\")) == pwszMountVolume)
				{
					/* UNC path */
					RtlStringCbPrintfW (Extension->wszVolume,
						sizeof (Extension->wszVolume),
						WIDE ("\\??\\\\%s"),
						pwszMountVolume + 7);
				}
				else
				{
					RtlStringCbCopyW (Extension->wszVolume, sizeof(Extension->wszVolume),pwszMountVolume);
				}

				memset (Extension->wszLabel, 0, sizeof (Extension->wszLabel));
				RtlStringCbCopyW (Extension->wszLabel, sizeof(Extension->wszLabel), mount->wszLabel);
			}

			// If we are to protect a hidden volume we cannot exit yet, for we must also
			// decrypt the hidden volume header.
			if (!(volumeType == TC_VOLUME_TYPE_NORMAL && mount->bProtectHiddenVolume))
			{
				TCfree (readBuffer);

				if (tmpCryptoInfo != NULL)
				{
					crypto_close (tmpCryptoInfo);
					tmpCryptoInfo = NULL;
				}

				return STATUS_SUCCESS;
			}
		}
		else if ((mount->bProtectHiddenVolume && volumeType == TC_VOLUME_TYPE_NORMAL)
			  || mount->nReturnCode != ERR_PASSWORD_WRONG)
		{
			 /* If we are not supposed to protect a hidden volume, the only error that is
				tolerated is ERR_PASSWORD_WRONG (to allow mounting a possible hidden volume).

				If we _are_ supposed to protect a hidden volume, we do not tolerate any error
				(both volume headers must be successfully decrypted). */

			break;
		}
	}

	/* Failed due to some non-OS reason so we drop through and return NT
	   SUCCESS then nReturnCode is checked later in user-mode */

	if (mount->nReturnCode == ERR_OUTOFMEMORY)
		ntStatus = STATUS_INSUFFICIENT_RESOURCES;
	else
		ntStatus = STATUS_SUCCESS;

error:
	if (mount->nReturnCode == ERR_SUCCESS)
		mount->nReturnCode = ERR_PASSWORD_WRONG;

	if (tmpCryptoInfo != NULL)
	{
		crypto_close (tmpCryptoInfo);
		tmpCryptoInfo = NULL;
	}

	if (Extension->cryptoInfo)
	{
		crypto_close (Extension->cryptoInfo);
		Extension->cryptoInfo = NULL;
	}

	if (Extension->bTimeStampValid)
	{
		RestoreTimeStamp (Extension);
	}

	/* Close the hDeviceFile */
	if (Extension->hDeviceFile != NULL)
		ZwClose (Extension->hDeviceFile);

	/* The cryptoInfo pointer is deallocated if the readheader routines
	   fail so there is no need to deallocate here  */

	/* Dereference the user-mode file object */
	if (Extension->pfoDeviceFile != NULL)
		ObDereferenceObject (Extension->pfoDeviceFile);

	/* Free the tmp IO buffers */
	if (readBuffer != NULL)
		TCfree (readBuffer);

	return ntStatus;
}

void TCCloseVolume (PDEVICE_OBJECT DeviceObject, PEXTENSION Extension)
{
	UNREFERENCED_PARAMETER (DeviceObject);	/* Remove compiler warning */

	if (Extension->hDeviceFile != NULL)
	{
		if (Extension->bRawDevice == FALSE
			&& Extension->bTimeStampValid)
		{
			RestoreTimeStamp (Extension);
		}
		ZwClose (Extension->hDeviceFile);
	}
	ObDereferenceObject (Extension->pfoDeviceFile);
	if (Extension->cryptoInfo)
	{
		crypto_close (Extension->cryptoInfo);
		Extension->cryptoInfo = NULL;
	}
}


NTSTATUS TCSendHostDeviceIoControlRequestEx (PDEVICE_OBJECT DeviceObject,
			       PEXTENSION Extension,
			       ULONG IoControlCode,
					 void *InputBuffer,
					 ULONG InputBufferSize,
			       void *OutputBuffer,
			       ULONG OutputBufferSize)
{
	IO_STATUS_BLOCK IoStatusBlock;
	NTSTATUS ntStatus;
	PIRP Irp;

	UNREFERENCED_PARAMETER(DeviceObject);	/* Remove compiler warning */

	KeClearEvent (&Extension->keVolumeEvent);

	Irp = IoBuildDeviceIoControlRequest (IoControlCode,
					     Extension->pFsdDevice,
					     InputBuffer, InputBufferSize,
					     OutputBuffer, OutputBufferSize,
					     FALSE,
					     &Extension->keVolumeEvent,
					     &IoStatusBlock);

	if (Irp == NULL)
	{
		Dump ("IRP allocation failed\n");
		return STATUS_INSUFFICIENT_RESOURCES;
	}

	// Disk device may be used by filesystem driver which needs file object
	IoGetNextIrpStackLocation (Irp) -> FileObject = Extension->pfoDeviceFile;

	ntStatus = IoCallDriver (Extension->pFsdDevice, Irp);
	if (ntStatus == STATUS_PENDING)
	{
		KeWaitForSingleObject (&Extension->keVolumeEvent, Executive, KernelMode, FALSE, NULL);
		ntStatus = IoStatusBlock.Status;
	}

	return ntStatus;
}

NTSTATUS TCSendHostDeviceIoControlRequest (PDEVICE_OBJECT DeviceObject,
			       PEXTENSION Extension,
			       ULONG IoControlCode,
			       void *OutputBuffer,
			       ULONG OutputBufferSize)
{
	return TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IoControlCode, NULL, 0, OutputBuffer, OutputBufferSize);
}

NTSTATUS COMPLETE_IRP (PDEVICE_OBJECT DeviceObject,
	      PIRP Irp,
	      NTSTATUS IrpStatus,
	      ULONG_PTR IrpInformation)
{
	Irp->IoStatus.Status = IrpStatus;
	Irp->IoStatus.Information = IrpInformation;

	UNREFERENCED_PARAMETER (DeviceObject);	/* Remove compiler warning */

#if EXTRA_INFO
	if (!NT_SUCCESS (IrpStatus))
	{
		PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation (Irp);
		Dump ("COMPLETE_IRP FAILING IRP %ls Flags 0x%08x vpb 0x%08x NTSTATUS 0x%08x\n", TCTranslateCode (irpSp->MajorFunction),
		      (ULONG) DeviceObject->Flags, (ULONG) DeviceObject->Vpb->Flags, IrpStatus);
	}
	else
	{
		PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation (Irp);
		Dump ("COMPLETE_IRP SUCCESS IRP %ls Flags 0x%08x vpb 0x%08x NTSTATUS 0x%08x\n", TCTranslateCode (irpSp->MajorFunction),
		      (ULONG) DeviceObject->Flags, (ULONG) DeviceObject->Vpb->Flags, IrpStatus);
	}
#endif
	IoCompleteRequest (Irp, IO_NO_INCREMENT);
	return IrpStatus;
}


static void RestoreTimeStamp (PEXTENSION Extension)
{
	NTSTATUS ntStatus;
	FILE_BASIC_INFORMATION FileBasicInfo;
	IO_STATUS_BLOCK IoStatusBlock;

	if (Extension->hDeviceFile != NULL
		&& Extension->bRawDevice == FALSE
		&& Extension->bReadOnly == FALSE
		&& Extension->bTimeStampValid)
	{
		ntStatus = ZwQueryInformationFile (Extension->hDeviceFile,
			&IoStatusBlock,
			&FileBasicInfo,
			sizeof (FileBasicInfo),
			FileBasicInformation);

		if (!NT_SUCCESS (ntStatus))
		{
			Dump ("ZwQueryInformationFile failed in RestoreTimeStamp: NTSTATUS 0x%08x\n",
				ntStatus);
		}
		else
		{
			FileBasicInfo.CreationTime = Extension->fileCreationTime;
			FileBasicInfo.LastAccessTime = Extension->fileLastAccessTime;
			FileBasicInfo.LastWriteTime = Extension->fileLastWriteTime;
			FileBasicInfo.ChangeTime = Extension->fileLastChangeTime;

			ntStatus = ZwSetInformationFile(
				Extension->hDeviceFile,
				&IoStatusBlock,
				&FileBasicInfo,
				sizeof (FileBasicInfo),
				FileBasicInformation);

			if (!NT_SUCCESS (ntStatus))
				Dump ("ZwSetInformationFile failed in RestoreTimeStamp: NTSTATUS 0x%08x\n",ntStatus);
		}
	}
}