diff options
Diffstat (limited to 'src/Format/InPlace.c')
| -rw-r--r-- | src/Format/InPlace.c | 1692 |
1 files changed, 1692 insertions, 0 deletions
diff --git a/src/Format/InPlace.c b/src/Format/InPlace.c new file mode 100644 index 00000000..ee864769 --- /dev/null +++ b/src/Format/InPlace.c @@ -0,0 +1,1692 @@ +/*
+ Copyright (c) 2008-2010 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+
+/* In this file, _WIN32_WINNT is defined as 0x0600 to make filesystem shrink available (Vista
+or later). _WIN32_WINNT cannot be defined as 0x0600 for the entire user-space projects
+because it breaks the main font app when the app is running on XP (likely an MS bug).
+IMPORTANT: Due to this issue, functions in this file must not directly interact with GUI. */
+#define TC_LOCAL_WIN32_WINNT_OVERRIDE 1
+#if (_WIN32_WINNT < 0x0600)
+# undef _WIN32_WINNT
+# define _WIN32_WINNT 0x0600
+#endif
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+
+#include "Tcdefs.h"
+#include "Platform/Finally.h"
+
+#include "Common.h"
+#include "Crc.h"
+#include "Dlgcode.h"
+#include "Language.h"
+#include "Tcformat.h"
+#include "Volumes.h"
+
+#include "InPlace.h"
+
+using namespace std;
+using namespace TrueCrypt;
+
+#define TC_MAX_NONSYS_INPLACE_ENC_WORK_CHUNK_SIZE (2048 * BYTES_PER_KB)
+#define TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE (2 * TC_MAX_VOLUME_SECTOR_SIZE)
+#define TC_NTFS_CONCEAL_CONSTANT 0xFF
+#define TC_NONSYS_INPLACE_ENC_HEADER_UPDATE_INTERVAL (64 * BYTES_PER_MB)
+#define TC_NONSYS_INPLACE_ENC_MIN_VOL_SIZE (TC_TOTAL_VOLUME_HEADERS_SIZE + TC_MIN_NTFS_FS_SIZE * 2)
+
+
+// If the returned value is greater than 0, it is the desired volume size in NTFS sectors (not in bytes)
+// after shrinking has been performed. If there's any error, returns -1.
+static __int64 NewFileSysSizeAfterShrink (HANDLE dev, const char *devicePath, int64 *totalClusterCount, DWORD *bytesPerCluster, BOOL silent)
+{
+ NTFS_VOLUME_DATA_BUFFER ntfsVolData;
+ DWORD nBytesReturned;
+ __int64 fileSysSize, desiredNbrSectors;
+
+ // Filesystem size and sector size
+
+ if (!DeviceIoControl (dev,
+ FSCTL_GET_NTFS_VOLUME_DATA,
+ NULL,
+ 0,
+ (LPVOID) &ntfsVolData,
+ sizeof (ntfsVolData),
+ &nBytesReturned,
+ NULL))
+ {
+ if (!silent)
+ handleWin32Error (MainDlg);
+
+ return -1;
+ }
+
+ fileSysSize = ntfsVolData.NumberSectors.QuadPart * ntfsVolData.BytesPerSector;
+
+ desiredNbrSectors = (fileSysSize - TC_TOTAL_VOLUME_HEADERS_SIZE) / ntfsVolData.BytesPerSector;
+
+ if (desiredNbrSectors <= 0)
+ return -1;
+
+ if (totalClusterCount)
+ *totalClusterCount = ntfsVolData.TotalClusters.QuadPart;
+ if (bytesPerCluster)
+ *bytesPerCluster = ntfsVolData.BytesPerCluster;
+
+ return desiredNbrSectors;
+}
+
+
+BOOL CheckRequirementsForNonSysInPlaceEnc (const char *devicePath, BOOL silent)
+{
+ NTFS_VOLUME_DATA_BUFFER ntfsVolData;
+ DWORD nBytesReturned;
+ HANDLE dev;
+ char szFileSysName [256];
+ WCHAR devPath [MAX_PATH];
+ char dosDev [TC_MAX_PATH] = {0};
+ char devName [MAX_PATH] = {0};
+ int driveLetterNo = -1;
+ char szRootPath[4] = {0, ':', '\\', 0};
+ __int64 deviceSize;
+ int partitionNumber = -1, driveNumber = -1;
+
+
+ /* ---------- Checks that do not require admin rights ----------- */
+
+
+ /* Operating system */
+
+ if (CurrentOSMajor < 6)
+ {
+ if (!silent)
+ ShowInPlaceEncErrMsgWAltSteps ("OS_NOT_SUPPORTED_FOR_NONSYS_INPLACE_ENC", FALSE);
+
+ return FALSE;
+ }
+
+
+ /* Volume type (must be a partition or a dynamic volume) */
+
+ if (sscanf (devicePath, "\\Device\\HarddiskVolume%d", &partitionNumber) != 1
+ && sscanf (devicePath, "\\Device\\Harddisk%d\\Partition%d", &driveNumber, &partitionNumber) != 2)
+ {
+ if (!silent)
+ Error ("INPLACE_ENC_INVALID_PATH");
+
+ return FALSE;
+ }
+
+ if (partitionNumber == 0)
+ {
+ if (!silent)
+ Warning ("RAW_DEV_NOT_SUPPORTED_FOR_INPLACE_ENC");
+
+ return FALSE;
+ }
+
+
+ /* Admin rights */
+
+ if (!IsAdmin())
+ {
+ // We rely on the wizard process to call us only when the whole wizard process has been elevated (so UAC
+ // status can be ignored). In case the IsAdmin() detection somehow fails, we allow the user to continue.
+
+ if (!silent)
+ Warning ("ADMIN_PRIVILEGES_WARN_DEVICES");
+ }
+
+
+ /* ---------- Checks that may require admin rights ----------- */
+
+
+ /* Access to the partition */
+
+ strcpy ((char *) devPath, devicePath);
+ ToUNICODE ((char *) devPath);
+
+ driveLetterNo = GetDiskDeviceDriveLetter (devPath);
+
+ if (driveLetterNo >= 0)
+ szRootPath[0] = (char) driveLetterNo + 'A';
+
+ if (FakeDosNameForDevice (devicePath, dosDev, devName, FALSE) != 0)
+ {
+ if (!silent)
+ {
+ handleWin32Error (MainDlg);
+ Error ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL");
+ }
+ return FALSE;
+ }
+
+ dev = OpenPartitionVolume (devName,
+ FALSE, // Do not require exclusive access
+ TRUE, // Require shared access (must be TRUE; otherwise, volume properties will not be possible to obtain)
+ FALSE, // Do not ask the user to confirm shared access (if exclusive fails)
+ FALSE, // Do not append alternative instructions how to encrypt the data (to applicable error messages)
+ silent); // Silent mode
+
+ if (dev == INVALID_HANDLE_VALUE)
+ return FALSE;
+
+
+ /* File system type */
+
+ GetVolumeInformation (szRootPath, NULL, 0, NULL, NULL, NULL, szFileSysName, sizeof(szFileSysName));
+
+ if (strncmp (szFileSysName, "NTFS", 4))
+ {
+ // The previous filesystem type detection method failed (or it's not NTFS) -- try an alternative method
+
+ if (!DeviceIoControl (dev,
+ FSCTL_GET_NTFS_VOLUME_DATA,
+ NULL,
+ 0,
+ (LPVOID) &ntfsVolData,
+ sizeof (ntfsVolData),
+ &nBytesReturned,
+ NULL))
+ {
+ if (!silent)
+ {
+ // The filesystem is not NTFS or the filesystem type could not be determined (or the NTFS filesystem
+ // is dismounted).
+
+ if (IsDeviceMounted (devName))
+ ShowInPlaceEncErrMsgWAltSteps ("ONLY_NTFS_SUPPORTED_FOR_NONSYS_INPLACE_ENC", FALSE);
+ else
+ Warning ("ONLY_MOUNTED_VOL_SUPPORTED_FOR_NONSYS_INPLACE_ENC");
+ }
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+ }
+
+
+ /* Attempt to determine whether the filesystem can be safely shrunk */
+
+ if (NewFileSysSizeAfterShrink (dev, devicePath, NULL, NULL, silent) == -1)
+ {
+ // Cannot determine whether shrinking is required
+ if (!silent)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL_ALT", TRUE);
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+
+ /* Partition size */
+
+ deviceSize = GetDeviceSize (devicePath);
+ if (deviceSize < 0)
+ {
+ // Cannot determine the size of the partition
+ if (!silent)
+ Error ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL");
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+ if (deviceSize < TC_NONSYS_INPLACE_ENC_MIN_VOL_SIZE)
+ {
+ // The partition is too small
+ if (!silent)
+ {
+ ShowInPlaceEncErrMsgWAltSteps ("PARTITION_TOO_SMALL_FOR_NONSYS_INPLACE_ENC", FALSE);
+ }
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+
+ /* Free space on the filesystem */
+
+ if (!DeviceIoControl (dev,
+ FSCTL_GET_NTFS_VOLUME_DATA,
+ NULL,
+ 0,
+ (LPVOID) &ntfsVolData,
+ sizeof (ntfsVolData),
+ &nBytesReturned,
+ NULL))
+ {
+ if (!silent)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL", TRUE);
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+ if (ntfsVolData.FreeClusters.QuadPart * ntfsVolData.BytesPerCluster < TC_TOTAL_VOLUME_HEADERS_SIZE)
+ {
+ if (!silent)
+ ShowInPlaceEncErrMsgWAltSteps ("NOT_ENOUGH_FREE_FILESYS_SPACE_FOR_SHRINK", TRUE);
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+
+ /* Filesystem sector size */
+
+ if (ntfsVolData.BytesPerSector > TC_MAX_VOLUME_SECTOR_SIZE
+ || ntfsVolData.BytesPerSector % ENCRYPTION_DATA_UNIT_SIZE != 0)
+ {
+ if (!silent)
+ ShowInPlaceEncErrMsgWAltSteps ("SECTOR_SIZE_UNSUPPORTED", TRUE);
+
+ CloseHandle (dev);
+ return FALSE;
+ }
+
+
+ CloseHandle (dev);
+ return TRUE;
+}
+
+
+int EncryptPartitionInPlaceBegin (volatile FORMAT_VOL_PARAMETERS *volParams, volatile HANDLE *outHandle, WipeAlgorithmId wipeAlgorithm)
+{
+ SHRINK_VOLUME_INFORMATION shrinkVolInfo;
+ signed __int64 sizeToShrinkTo;
+ int nStatus = ERR_SUCCESS;
+ PCRYPTO_INFO cryptoInfo = NULL;
+ PCRYPTO_INFO cryptoInfo2 = NULL;
+ HANDLE dev = INVALID_HANDLE_VALUE;
+ DWORD dwError;
+ char *header;
+ char dosDev[TC_MAX_PATH] = {0};
+ char devName[MAX_PATH] = {0};
+ int driveLetter = -1;
+ WCHAR deviceName[MAX_PATH];
+ uint64 dataAreaSize;
+ __int64 deviceSize;
+ LARGE_INTEGER offset;
+ DWORD dwResult;
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_PREPARING);
+
+
+ if (!CheckRequirementsForNonSysInPlaceEnc (volParams->volumePath, FALSE))
+ return ERR_DONT_REPORT;
+
+
+ header = (char *) TCalloc (TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ if (!header)
+ return ERR_OUTOFMEMORY;
+
+ VirtualLock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+
+ deviceSize = GetDeviceSize (volParams->volumePath);
+ if (deviceSize < 0)
+ {
+ // Cannot determine the size of the partition
+ nStatus = ERR_PARAMETER_INCORRECT;
+ goto closing_seq;
+ }
+
+ if (deviceSize < TC_NONSYS_INPLACE_ENC_MIN_VOL_SIZE)
+ {
+ ShowInPlaceEncErrMsgWAltSteps ("PARTITION_TOO_SMALL_FOR_NONSYS_INPLACE_ENC", TRUE);
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+ dataAreaSize = GetVolumeDataAreaSize (volParams->hiddenVol, deviceSize);
+
+ strcpy ((char *)deviceName, volParams->volumePath);
+ ToUNICODE ((char *)deviceName);
+
+ driveLetter = GetDiskDeviceDriveLetter (deviceName);
+
+
+ if (FakeDosNameForDevice (volParams->volumePath, dosDev, devName, FALSE) != 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (IsDeviceMounted (devName))
+ {
+ dev = OpenPartitionVolume (devName,
+ FALSE, // Do not require exclusive access (must be FALSE; otherwise, it will not be possible to dismount the volume or obtain its properties and FSCTL_ALLOW_EXTENDED_DASD_IO will fail too)
+ TRUE, // Require shared access (must be TRUE; otherwise, it will not be possible to dismount the volume or obtain its properties and FSCTL_ALLOW_EXTENDED_DASD_IO will fail too)
+ FALSE, // Do not ask the user to confirm shared access (if exclusive fails)
+ FALSE, // Do not append alternative instructions how to encrypt the data (to applicable error messages)
+ FALSE); // Non-silent mode
+
+ if (dev == INVALID_HANDLE_VALUE)
+ {
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+ }
+ else
+ {
+ // The volume is not mounted so we can't work with the filesystem.
+ Error ("ONLY_MOUNTED_VOL_SUPPORTED_FOR_NONSYS_INPLACE_ENC");
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+
+ /* Gain "raw" access to the partition (the NTFS driver guards hidden sectors). */
+
+ if (!DeviceIoControl (dev,
+ FSCTL_ALLOW_EXTENDED_DASD_IO,
+ NULL,
+ 0,
+ NULL,
+ 0,
+ &dwResult,
+ NULL))
+ {
+ handleWin32Error (MainDlg);
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL_ALT", TRUE);
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+
+
+ /* Shrink the filesystem */
+
+ int64 totalClusterCount;
+ DWORD bytesPerCluster;
+
+ sizeToShrinkTo = NewFileSysSizeAfterShrink (dev, volParams->volumePath, &totalClusterCount, &bytesPerCluster, FALSE);
+
+ if (sizeToShrinkTo == -1)
+ {
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL_ALT", TRUE);
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_RESIZING);
+
+ memset (&shrinkVolInfo, 0, sizeof (shrinkVolInfo));
+
+ shrinkVolInfo.ShrinkRequestType = ShrinkPrepare;
+ shrinkVolInfo.NewNumberOfSectors = sizeToShrinkTo;
+
+ if (!DeviceIoControl (dev,
+ FSCTL_SHRINK_VOLUME,
+ (LPVOID) &shrinkVolInfo,
+ sizeof (shrinkVolInfo),
+ NULL,
+ 0,
+ &dwResult,
+ NULL))
+ {
+ handleWin32Error (MainDlg);
+ ShowInPlaceEncErrMsgWAltSteps ("CANNOT_RESIZE_FILESYS", TRUE);
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+ BOOL clustersMovedBeforeVolumeEnd = FALSE;
+
+ while (true)
+ {
+ shrinkVolInfo.ShrinkRequestType = ShrinkCommit;
+ shrinkVolInfo.NewNumberOfSectors = 0;
+
+ if (!DeviceIoControl (dev, FSCTL_SHRINK_VOLUME, &shrinkVolInfo, sizeof (shrinkVolInfo), NULL, 0, &dwResult, NULL))
+ {
+ // If there are any occupied clusters beyond the new desired end of the volume, the call fails with
+ // ERROR_ACCESS_DENIED (STATUS_ALREADY_COMMITTED).
+ if (GetLastError () == ERROR_ACCESS_DENIED)
+ {
+ if (!clustersMovedBeforeVolumeEnd)
+ {
+ if (MoveClustersBeforeThreshold (dev, deviceName, totalClusterCount - (bytesPerCluster > TC_TOTAL_VOLUME_HEADERS_SIZE ? 1 : TC_TOTAL_VOLUME_HEADERS_SIZE / bytesPerCluster)))
+ {
+ clustersMovedBeforeVolumeEnd = TRUE;
+ continue;
+ }
+
+ handleWin32Error (MainDlg);
+ }
+ }
+ else
+ handleWin32Error (MainDlg);
+
+ ShowInPlaceEncErrMsgWAltSteps ("CANNOT_RESIZE_FILESYS", TRUE);
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+ break;
+ }
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_PREPARING);
+
+
+ /* Gain exclusive access to the volume */
+
+ nStatus = DismountFileSystem (dev,
+ driveLetter,
+ TRUE,
+ TRUE,
+ FALSE);
+
+ if (nStatus != ERR_SUCCESS)
+ {
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+
+
+
+ /* Create header backup on the partition. Until the volume is fully encrypted, the backup header will provide
+ us with the master key, encrypted range, and other data for pause/resume operations. We cannot create the
+ primary header until the entire partition is encrypted (because we encrypt backwards and the primary header
+ area is occuppied by data until the very end of the process). */
+
+ // Prepare the backup header
+ for (int wipePass = 0; wipePass < (wipeAlgorithm == TC_WIPE_NONE ? 1 : PRAND_DISK_WIPE_PASSES); wipePass++)
+ {
+ nStatus = CreateVolumeHeaderInMemory (FALSE,
+ header,
+ volParams->ea,
+ FIRST_MODE_OF_OPERATION_ID,
+ volParams->password,
+ volParams->pkcs5,
+ wipePass == 0 ? NULL : (char *) cryptoInfo->master_keydata,
+ &cryptoInfo,
+ dataAreaSize,
+ 0,
+ TC_VOLUME_DATA_OFFSET + dataAreaSize, // Start of the encrypted area = the first byte of the backup heeader (encrypting from the end)
+ 0, // No data is encrypted yet
+ 0,
+ volParams->headerFlags | TC_HEADER_FLAG_NONSYS_INPLACE_ENC,
+ volParams->sectorSize,
+ wipeAlgorithm == TC_WIPE_NONE ? FALSE : (wipePass < PRAND_DISK_WIPE_PASSES - 1));
+
+ if (nStatus != 0)
+ goto closing_seq;
+
+ offset.QuadPart = TC_VOLUME_DATA_OFFSET + dataAreaSize;
+
+ if (!SetFilePointerEx (dev, offset, NULL, FILE_BEGIN))
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ // Write the backup header to the partition
+ if (!WriteEffectiveVolumeHeader (TRUE, dev, (byte *) header))
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ // Fill the reserved sectors of the backup header area with random data
+ nStatus = WriteRandomDataToReservedHeaderAreas (dev, cryptoInfo, dataAreaSize, FALSE, TRUE);
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+ }
+
+
+ /* Now we will try to decrypt the backup header to verify it has been correctly written. */
+
+ nStatus = OpenBackupHeader (dev, volParams->volumePath, volParams->password, &cryptoInfo2, NULL, deviceSize);
+
+ if (nStatus != ERR_SUCCESS
+ || cryptoInfo->EncryptedAreaStart.Value != cryptoInfo2->EncryptedAreaStart.Value
+ || cryptoInfo2->EncryptedAreaStart.Value == 0)
+ {
+ if (nStatus == ERR_SUCCESS)
+ nStatus = ERR_PARAMETER_INCORRECT;
+
+ goto closing_seq;
+ }
+
+ // The backup header is valid so we know we should be able to safely resume in-place encryption
+ // of this partition even if the system/app crashes.
+
+
+
+ /* Conceal the NTFS filesystem (by performing an easy-to-undo modification). This will prevent Windows
+ and apps from interfering with the volume until it has been fully encrypted. */
+
+ nStatus = ConcealNTFS (dev);
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+
+
+ // /* If a drive letter is assigned to the device, remove it (so that users do not try to open it, which
+ //would cause Windows to ask them if they want to format the volume and other dangerous things). */
+
+ //if (driveLetter >= 0)
+ //{
+ // char rootPath[] = { driveLetter + 'A', ':', '\\', 0 };
+
+ // // Try to remove the assigned drive letter
+ // if (DeleteVolumeMountPoint (rootPath))
+ // driveLetter = -1;
+ //}
+
+
+
+ /* Update config files and app data */
+
+ // In the config file, increase the number of partitions where in-place encryption is in progress
+
+ SaveNonSysInPlaceEncSettings (1, wipeAlgorithm);
+
+
+ // Add the wizard to the system startup sequence if appropriate
+
+ if (!IsNonInstallMode ())
+ ManageStartupSeqWiz (FALSE, "/prinplace");
+
+
+ nStatus = ERR_SUCCESS;
+
+
+closing_seq:
+
+ dwError = GetLastError();
+
+ if (cryptoInfo != NULL)
+ {
+ crypto_close (cryptoInfo);
+ cryptoInfo = NULL;
+ }
+
+ if (cryptoInfo2 != NULL)
+ {
+ crypto_close (cryptoInfo2);
+ cryptoInfo2 = NULL;
+ }
+
+ burn (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ VirtualUnlock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ TCfree (header);
+
+ if (dosDev[0])
+ RemoveFakeDosName (volParams->volumePath, dosDev);
+
+ *outHandle = dev;
+
+ if (nStatus != ERR_SUCCESS)
+ SetLastError (dwError);
+
+ return nStatus;
+}
+
+
+int EncryptPartitionInPlaceResume (HANDLE dev,
+ volatile FORMAT_VOL_PARAMETERS *volParams,
+ WipeAlgorithmId wipeAlgorithm,
+ volatile BOOL *bTryToCorrectReadErrors)
+{
+ PCRYPTO_INFO masterCryptoInfo = NULL, headerCryptoInfo = NULL, tmpCryptoInfo = NULL;
+ UINT64_STRUCT unitNo;
+ char *buf = NULL, *header = NULL;
+ byte *wipeBuffer = NULL;
+ byte wipeRandChars [TC_WIPE_RAND_CHAR_COUNT];
+ byte wipeRandCharsUpdate [TC_WIPE_RAND_CHAR_COUNT];
+ char dosDev[TC_MAX_PATH] = {0};
+ char devName[MAX_PATH] = {0};
+ WCHAR deviceName[MAX_PATH];
+ int nStatus = ERR_SUCCESS;
+ __int64 deviceSize;
+ uint64 remainingBytes, lastHeaderUpdateDistance = 0, zeroedSectorCount = 0;
+ uint32 workChunkSize;
+ DWORD dwError, dwResult;
+ BOOL bPause = FALSE, bEncryptedAreaSizeChanged = FALSE;
+ LARGE_INTEGER offset;
+ int sectorSize;
+ int i;
+ DWORD n;
+ char *devicePath = volParams->volumePath;
+ Password *password = volParams->password;
+ DISK_GEOMETRY driveGeometry;
+
+
+ bInPlaceEncNonSysResumed = TRUE;
+
+ buf = (char *) TCalloc (TC_MAX_NONSYS_INPLACE_ENC_WORK_CHUNK_SIZE);
+ if (!buf)
+ {
+ nStatus = ERR_OUTOFMEMORY;
+ goto closing_seq;
+ }
+
+ header = (char *) TCalloc (TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ if (!header)
+ {
+ nStatus = ERR_OUTOFMEMORY;
+ goto closing_seq;
+ }
+
+ VirtualLock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+
+ if (wipeAlgorithm != TC_WIPE_NONE)
+ {
+ wipeBuffer = (byte *) TCalloc (TC_MAX_NONSYS_INPLACE_ENC_WORK_CHUNK_SIZE);
+ if (!wipeBuffer)
+ {
+ nStatus = ERR_OUTOFMEMORY;
+ goto closing_seq;
+ }
+ }
+
+ headerCryptoInfo = crypto_open();
+
+ if (headerCryptoInfo == NULL)
+ {
+ nStatus = ERR_OUTOFMEMORY;
+ goto closing_seq;
+ }
+
+ deviceSize = GetDeviceSize (devicePath);
+ if (deviceSize < 0)
+ {
+ // Cannot determine the size of the partition
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (dev == INVALID_HANDLE_VALUE)
+ {
+ strcpy ((char *)deviceName, devicePath);
+ ToUNICODE ((char *)deviceName);
+
+ if (FakeDosNameForDevice (devicePath, dosDev, devName, FALSE) != 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ dev = OpenPartitionVolume (devName,
+ FALSE, // Do not require exclusive access
+ FALSE, // Do not require shared access
+ TRUE, // Ask the user to confirm shared access (if exclusive fails)
+ FALSE, // Do not append alternative instructions how to encrypt the data (to applicable error messages)
+ FALSE); // Non-silent mode
+
+ if (dev == INVALID_HANDLE_VALUE)
+ {
+ nStatus = ERR_DONT_REPORT;
+ goto closing_seq;
+ }
+ }
+
+ // This should never be needed, but is still performed for extra safety (without checking the result)
+ DeviceIoControl (dev,
+ FSCTL_ALLOW_EXTENDED_DASD_IO,
+ NULL,
+ 0,
+ NULL,
+ 0,
+ &dwResult,
+ NULL);
+
+
+ if (!DeviceIoControl (dev, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &driveGeometry, sizeof (driveGeometry), &dwResult, NULL))
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ sectorSize = driveGeometry.BytesPerSector;
+
+
+ nStatus = OpenBackupHeader (dev, devicePath, password, &masterCryptoInfo, headerCryptoInfo, deviceSize);
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+
+
+ remainingBytes = masterCryptoInfo->VolumeSize.Value - masterCryptoInfo->EncryptedAreaLength.Value;
+
+ lastHeaderUpdateDistance = 0;
+
+
+ ExportProgressStats (masterCryptoInfo->EncryptedAreaLength.Value, masterCryptoInfo->VolumeSize.Value);
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_ENCRYPTING);
+
+ bFirstNonSysInPlaceEncResumeDone = TRUE;
+
+
+ /* The in-place encryption core */
+
+ while (remainingBytes > 0)
+ {
+ workChunkSize = (uint32) min (remainingBytes, TC_MAX_NONSYS_INPLACE_ENC_WORK_CHUNK_SIZE);
+
+ if (workChunkSize % ENCRYPTION_DATA_UNIT_SIZE != 0)
+ {
+ nStatus = ERR_PARAMETER_INCORRECT;
+ goto closing_seq;
+ }
+
+ unitNo.Value = (remainingBytes - workChunkSize + TC_VOLUME_DATA_OFFSET) / ENCRYPTION_DATA_UNIT_SIZE;
+
+
+ // Read the plaintext into RAM
+
+inplace_enc_read:
+
+ offset.QuadPart = masterCryptoInfo->EncryptedAreaStart.Value - workChunkSize - TC_VOLUME_DATA_OFFSET;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (ReadFile (dev, buf, workChunkSize, &n, NULL) == 0)
+ {
+ // Read error
+
+ DWORD dwTmpErr = GetLastError ();
+
+ if (IsDiskReadError (dwTmpErr) && !bVolTransformThreadCancel)
+ {
+ // Physical defect or data corruption
+
+ if (!*bTryToCorrectReadErrors)
+ {
+ *bTryToCorrectReadErrors = (AskWarnYesNo ("ENABLE_BAD_SECTOR_ZEROING") == IDYES);
+ }
+
+ if (*bTryToCorrectReadErrors)
+ {
+ // Try to correct the read errors physically
+
+ offset.QuadPart = masterCryptoInfo->EncryptedAreaStart.Value - workChunkSize - TC_VOLUME_DATA_OFFSET;
+
+ nStatus = ZeroUnreadableSectors (dev, offset, workChunkSize, sectorSize, &zeroedSectorCount);
+
+ if (nStatus != ERR_SUCCESS)
+ {
+ // Due to write errors, we can't correct the read errors
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ goto inplace_enc_read;
+ }
+ }
+
+ SetLastError (dwTmpErr); // Preserve the original error code
+
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (remainingBytes - workChunkSize < TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE)
+ {
+ // We reached the inital portion of the filesystem, which we had concealed (in order to prevent
+ // Windows from interfering with the volume). Now we need to undo that modification.
+
+ for (i = 0; i < TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE - (remainingBytes - workChunkSize); i++)
+ buf[i] ^= TC_NTFS_CONCEAL_CONSTANT;
+ }
+
+
+ // Encrypt the plaintext in RAM
+
+ EncryptDataUnits ((byte *) buf, &unitNo, workChunkSize / ENCRYPTION_DATA_UNIT_SIZE, masterCryptoInfo);
+
+
+ // If enabled, wipe the area to which we will write the ciphertext
+
+ if (wipeAlgorithm != TC_WIPE_NONE)
+ {
+ byte wipePass;
+
+ offset.QuadPart = masterCryptoInfo->EncryptedAreaStart.Value - workChunkSize;
+
+ for (wipePass = 1; wipePass <= GetWipePassCount (wipeAlgorithm); ++wipePass)
+ {
+ if (!WipeBuffer (wipeAlgorithm, wipeRandChars, wipePass, wipeBuffer, workChunkSize))
+ {
+ ULONG i;
+ for (i = 0; i < workChunkSize; ++i)
+ {
+ wipeBuffer[i] = buf[i] + wipePass;
+ }
+
+ EncryptDataUnits (wipeBuffer, &unitNo, workChunkSize / ENCRYPTION_DATA_UNIT_SIZE, masterCryptoInfo);
+ memcpy (wipeRandCharsUpdate, wipeBuffer, sizeof (wipeRandCharsUpdate));
+ }
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || WriteFile (dev, wipeBuffer, workChunkSize, &n, NULL) == 0)
+ {
+ // Write error
+ dwError = GetLastError();
+
+ // Undo failed write operation
+ if (workChunkSize > TC_VOLUME_DATA_OFFSET && SetFilePointerEx (dev, offset, NULL, FILE_BEGIN))
+ {
+ DecryptDataUnits ((byte *) buf, &unitNo, workChunkSize / ENCRYPTION_DATA_UNIT_SIZE, masterCryptoInfo);
+ WriteFile (dev, buf + TC_VOLUME_DATA_OFFSET, workChunkSize - TC_VOLUME_DATA_OFFSET, &n, NULL);
+ }
+
+ SetLastError (dwError);
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+ }
+
+ memcpy (wipeRandChars, wipeRandCharsUpdate, sizeof (wipeRandCharsUpdate));
+ }
+
+
+ // Write the ciphertext
+
+ offset.QuadPart = masterCryptoInfo->EncryptedAreaStart.Value - workChunkSize;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (WriteFile (dev, buf, workChunkSize, &n, NULL) == 0)
+ {
+ // Write error
+ dwError = GetLastError();
+
+ // Undo failed write operation
+ if (workChunkSize > TC_VOLUME_DATA_OFFSET && SetFilePointerEx (dev, offset, NULL, FILE_BEGIN))
+ {
+ DecryptDataUnits ((byte *) buf, &unitNo, workChunkSize / ENCRYPTION_DATA_UNIT_SIZE, masterCryptoInfo);
+ WriteFile (dev, buf + TC_VOLUME_DATA_OFFSET, workChunkSize - TC_VOLUME_DATA_OFFSET, &n, NULL);
+ }
+
+ SetLastError (dwError);
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+
+ masterCryptoInfo->EncryptedAreaStart.Value -= workChunkSize;
+ masterCryptoInfo->EncryptedAreaLength.Value += workChunkSize;
+
+ remainingBytes -= workChunkSize;
+ lastHeaderUpdateDistance += workChunkSize;
+
+ bEncryptedAreaSizeChanged = TRUE;
+
+ if (lastHeaderUpdateDistance >= TC_NONSYS_INPLACE_ENC_HEADER_UPDATE_INTERVAL)
+ {
+ nStatus = FastVolumeHeaderUpdate (dev, headerCryptoInfo, masterCryptoInfo, deviceSize);
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+ lastHeaderUpdateDistance = 0;
+ }
+
+ ExportProgressStats (masterCryptoInfo->EncryptedAreaLength.Value, masterCryptoInfo->VolumeSize.Value);
+
+ if (bVolTransformThreadCancel)
+ {
+ bPause = TRUE;
+ break;
+ }
+ }
+
+ nStatus = FastVolumeHeaderUpdate (dev, headerCryptoInfo, masterCryptoInfo, deviceSize);
+
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+
+ if (!bPause)
+ {
+ /* The data area has been fully encrypted; create and write the primary volume header */
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_FINALIZING);
+
+ for (int wipePass = 0; wipePass < (wipeAlgorithm == TC_WIPE_NONE ? 1 : PRAND_DISK_WIPE_PASSES); wipePass++)
+ {
+ nStatus = CreateVolumeHeaderInMemory (FALSE,
+ header,
+ headerCryptoInfo->ea,
+ headerCryptoInfo->mode,
+ password,
+ masterCryptoInfo->pkcs5,
+ (char *) masterCryptoInfo->master_keydata,
+ &tmpCryptoInfo,
+ masterCryptoInfo->VolumeSize.Value,
+ 0,
+ masterCryptoInfo->EncryptedAreaStart.Value,
+ masterCryptoInfo->EncryptedAreaLength.Value,
+ masterCryptoInfo->RequiredProgramVersion,
+ masterCryptoInfo->HeaderFlags | TC_HEADER_FLAG_NONSYS_INPLACE_ENC,
+ masterCryptoInfo->SectorSize,
+ wipeAlgorithm == TC_WIPE_NONE ? FALSE : (wipePass < PRAND_DISK_WIPE_PASSES - 1));
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+
+ offset.QuadPart = TC_VOLUME_HEADER_OFFSET;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || !WriteEffectiveVolumeHeader (TRUE, dev, (byte *) header))
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ // Fill the reserved sectors of the header area with random data
+ nStatus = WriteRandomDataToReservedHeaderAreas (dev, headerCryptoInfo, masterCryptoInfo->VolumeSize.Value, TRUE, FALSE);
+
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+ }
+
+ // Update the configuration files
+
+ SaveNonSysInPlaceEncSettings (-1, wipeAlgorithm);
+
+
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_FINISHED);
+
+ nStatus = ERR_SUCCESS;
+ }
+ else
+ {
+ // The process has been paused by the user or aborted by the wizard (e.g. on app exit)
+
+ nStatus = ERR_USER_ABORT;
+
+ SetNonSysInplaceEncUIStatus (NONSYS_INPLACE_ENC_STATUS_PAUSED);
+ }
+
+
+closing_seq:
+
+ dwError = GetLastError();
+
+ if (bEncryptedAreaSizeChanged
+ && dev != INVALID_HANDLE_VALUE
+ && masterCryptoInfo != NULL
+ && headerCryptoInfo != NULL
+ && deviceSize > 0)
+ {
+ // Execution of the core loop may have been interrupted due to an error or user action without updating the header
+ FastVolumeHeaderUpdate (dev, headerCryptoInfo, masterCryptoInfo, deviceSize);
+ }
+
+ if (masterCryptoInfo != NULL)
+ {
+ crypto_close (masterCryptoInfo);
+ masterCryptoInfo = NULL;
+ }
+
+ if (headerCryptoInfo != NULL)
+ {
+ crypto_close (headerCryptoInfo);
+ headerCryptoInfo = NULL;
+ }
+
+ if (tmpCryptoInfo != NULL)
+ {
+ crypto_close (tmpCryptoInfo);
+ tmpCryptoInfo = NULL;
+ }
+
+ if (dosDev[0])
+ RemoveFakeDosName (devicePath, dosDev);
+
+ if (dev != INVALID_HANDLE_VALUE)
+ {
+ CloseHandle (dev);
+ dev = INVALID_HANDLE_VALUE;
+ }
+
+ if (buf != NULL)
+ TCfree (buf);
+
+ if (header != NULL)
+ {
+ burn (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ VirtualUnlock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ TCfree (header);
+ }
+
+ if (wipeBuffer != NULL)
+ TCfree (wipeBuffer);
+
+ if (zeroedSectorCount > 0)
+ {
+ wchar_t msg[30000] = {0};
+ wchar_t sizeStr[500] = {0};
+
+ GetSizeString (zeroedSectorCount * sectorSize, sizeStr);
+
+ wsprintfW (msg,
+ GetString ("ZEROED_BAD_SECTOR_COUNT"),
+ zeroedSectorCount,
+ sizeStr);
+
+ WarningDirect (msg);
+ }
+
+ if (nStatus != ERR_SUCCESS && nStatus != ERR_USER_ABORT)
+ SetLastError (dwError);
+
+ return nStatus;
+}
+
+
+int FastVolumeHeaderUpdate (HANDLE dev, CRYPTO_INFO *headerCryptoInfo, CRYPTO_INFO *masterCryptoInfo, __int64 deviceSize)
+{
+ LARGE_INTEGER offset;
+ DWORD n;
+ int nStatus = ERR_SUCCESS;
+ byte *header;
+ DWORD dwError;
+ uint32 headerCrc32;
+ byte *fieldPos;
+
+ header = (byte *) TCalloc (TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+
+ if (!header)
+ return ERR_OUTOFMEMORY;
+
+ VirtualLock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+
+
+ fieldPos = (byte *) header + TC_HEADER_OFFSET_ENCRYPTED_AREA_START;
+
+ offset.QuadPart = deviceSize - TC_VOLUME_HEADER_GROUP_SIZE;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || !ReadEffectiveVolumeHeader (TRUE, dev, header, &n) || n < TC_VOLUME_HEADER_EFFECTIVE_SIZE)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+
+ DecryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, headerCryptoInfo);
+
+ if (GetHeaderField32 (header, TC_HEADER_OFFSET_MAGIC) != 0x54525545)
+ {
+ nStatus = ERR_PARAMETER_INCORRECT;
+ goto closing_seq;
+ }
+
+ mputInt64 (fieldPos, (masterCryptoInfo->EncryptedAreaStart.Value));
+ mputInt64 (fieldPos, (masterCryptoInfo->EncryptedAreaLength.Value));
+
+
+ headerCrc32 = GetCrc32 (header + TC_HEADER_OFFSET_MAGIC, TC_HEADER_OFFSET_HEADER_CRC - TC_HEADER_OFFSET_MAGIC);
+ fieldPos = (byte *) header + TC_HEADER_OFFSET_HEADER_CRC;
+ mputLong (fieldPos, headerCrc32);
+
+ EncryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, headerCryptoInfo);
+
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || !WriteEffectiveVolumeHeader (TRUE, dev, header))
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+
+closing_seq:
+
+ dwError = GetLastError();
+
+ burn (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ VirtualUnlock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ TCfree (header);
+
+ if (nStatus != ERR_SUCCESS)
+ SetLastError (dwError);
+
+ return nStatus;
+}
+
+
+static HANDLE OpenPartitionVolume (const char *devName,
+ BOOL bExclusiveRequired,
+ BOOL bSharedRequired,
+ BOOL bSharedRequiresConfirmation,
+ BOOL bShowAlternativeSteps,
+ BOOL bSilent)
+{
+ HANDLE dev = INVALID_HANDLE_VALUE;
+ int retryCount = 0;
+
+ if (bExclusiveRequired)
+ bSharedRequired = FALSE;
+
+ if (bExclusiveRequired || !bSharedRequired)
+ {
+ // Exclusive access
+ // Note that when exclusive access is denied, it is worth retrying (usually succeeds after a few tries).
+ while (dev == INVALID_HANDLE_VALUE && retryCount++ < EXCL_ACCESS_MAX_AUTO_RETRIES)
+ {
+ dev = CreateFile (devName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH, NULL);
+
+ if (retryCount > 1)
+ Sleep (EXCL_ACCESS_AUTO_RETRY_DELAY);
+ }
+ }
+
+ if (dev == INVALID_HANDLE_VALUE)
+ {
+ if (bExclusiveRequired)
+ {
+ if (!bSilent)
+ {
+ handleWin32Error (MainDlg);
+
+ if (bShowAlternativeSteps)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL_ALT", TRUE);
+ else
+ Error ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL");
+ }
+ return INVALID_HANDLE_VALUE;
+ }
+
+ // Shared mode
+ dev = CreateFile (devName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH, NULL);
+ if (dev != INVALID_HANDLE_VALUE)
+ {
+ if (bSharedRequiresConfirmation
+ && !bSilent
+ && AskWarnNoYes ("DEVICE_IN_USE_INPLACE_ENC") == IDNO)
+ {
+ CloseHandle (dev);
+ return INVALID_HANDLE_VALUE;
+ }
+ }
+ else
+ {
+ if (!bSilent)
+ {
+ handleWin32Error (MainDlg);
+
+ if (bShowAlternativeSteps)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL_ALT", TRUE);
+ else
+ Error ("INPLACE_ENC_CANT_ACCESS_OR_GET_INFO_ON_VOL");
+ }
+ return INVALID_HANDLE_VALUE;
+ }
+ }
+
+ return dev;
+}
+
+
+static int DismountFileSystem (HANDLE dev,
+ int driveLetter,
+ BOOL bForcedAllowed,
+ BOOL bForcedRequiresConfirmation,
+ BOOL bSilent)
+{
+ int attempt;
+ BOOL bResult;
+ DWORD dwResult;
+
+ CloseVolumeExplorerWindows (MainDlg, driveLetter);
+
+ attempt = UNMOUNT_MAX_AUTO_RETRIES * 10;
+
+ while (!(bResult = DeviceIoControl (dev, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0, &dwResult, NULL))
+ && attempt > 0)
+ {
+ Sleep (UNMOUNT_AUTO_RETRY_DELAY);
+ attempt--;
+ }
+
+ if (!bResult)
+ {
+ if (!bForcedAllowed)
+ {
+ if (!bSilent)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_LOCK_OR_DISMOUNT_FILESYS", TRUE);
+
+ return ERR_DONT_REPORT;
+ }
+
+ if (bForcedRequiresConfirmation
+ && !bSilent
+ && AskWarnYesNo ("VOL_LOCK_FAILED_OFFER_FORCED_DISMOUNT") == IDNO)
+ {
+ return ERR_DONT_REPORT;
+ }
+ }
+
+ // Dismount the volume
+
+ attempt = UNMOUNT_MAX_AUTO_RETRIES * 10;
+
+ while (!(bResult = DeviceIoControl (dev, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0, &dwResult, NULL))
+ && attempt > 0)
+ {
+ Sleep (UNMOUNT_AUTO_RETRY_DELAY);
+ attempt--;
+ }
+
+ if (!bResult)
+ {
+ if (!bSilent)
+ ShowInPlaceEncErrMsgWAltSteps ("INPLACE_ENC_CANT_LOCK_OR_DISMOUNT_FILESYS", TRUE);
+
+ return ERR_DONT_REPORT;
+ }
+
+ return ERR_SUCCESS;
+}
+
+
+// Easy-to-undo modification applied to conceal the NTFS filesystem (to prevent Windows and apps from
+// interfering with it until the volume has been fully encrypted). Note that this function will precisely
+// undo any modifications it made to the filesystem automatically if an error occurs when writing (including
+// physical drive defects).
+static int ConcealNTFS (HANDLE dev)
+{
+ char buf [TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE];
+ DWORD nbrBytesProcessed, nbrBytesProcessed2;
+ int i;
+ LARGE_INTEGER offset;
+ DWORD dwError;
+
+ offset.QuadPart = 0;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0)
+ return ERR_OS_ERROR;
+
+ if (ReadFile (dev, buf, TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE, &nbrBytesProcessed, NULL) == 0)
+ return ERR_OS_ERROR;
+
+ for (i = 0; i < TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE; i++)
+ buf[i] ^= TC_NTFS_CONCEAL_CONSTANT;
+
+ offset.QuadPart = 0;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0)
+ return ERR_OS_ERROR;
+
+ if (WriteFile (dev, buf, TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE, &nbrBytesProcessed, NULL) == 0)
+ {
+ // One or more of the sectors is/are probably damaged and cause write errors.
+ // We must undo the modifications we made.
+
+ dwError = GetLastError();
+
+ for (i = 0; i < TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE; i++)
+ buf[i] ^= TC_NTFS_CONCEAL_CONSTANT;
+
+ offset.QuadPart = 0;
+
+ do
+ {
+ Sleep (1);
+ }
+ while (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || WriteFile (dev, buf, TC_INITIAL_NTFS_CONCEAL_PORTION_SIZE, &nbrBytesProcessed2, NULL) == 0);
+
+ SetLastError (dwError);
+
+ return ERR_OS_ERROR;
+ }
+
+ return ERR_SUCCESS;
+}
+
+
+void ShowInPlaceEncErrMsgWAltSteps (char *iniStrId, BOOL bErr)
+{
+ wchar_t msg[30000];
+
+ wcscpy (msg, GetString (iniStrId));
+
+ wcscat (msg, L"\n\n\n");
+ wcscat (msg, GetString ("INPLACE_ENC_ALTERNATIVE_STEPS"));
+
+ if (bErr)
+ ErrorDirect (msg);
+ else
+ WarningDirect (msg);
+}
+
+
+static void ExportProgressStats (__int64 bytesDone, __int64 totalSize)
+{
+ NonSysInplaceEncBytesDone = bytesDone;
+ NonSysInplaceEncTotalSize = totalSize;
+}
+
+
+void SetNonSysInplaceEncUIStatus (int nonSysInplaceEncStatus)
+{
+ NonSysInplaceEncStatus = nonSysInplaceEncStatus;
+}
+
+
+BOOL SaveNonSysInPlaceEncSettings (int delta, WipeAlgorithmId newWipeAlgorithm)
+{
+ int count;
+ char str[32];
+ WipeAlgorithmId savedWipeAlgorithm = TC_WIPE_NONE;
+
+ if (delta == 0)
+ return TRUE;
+
+ count = LoadNonSysInPlaceEncSettings (&savedWipeAlgorithm) + delta;
+
+ if (count < 1)
+ {
+ RemoveNonSysInPlaceEncNotifications();
+ return TRUE;
+ }
+ else
+ {
+ if (newWipeAlgorithm != TC_WIPE_NONE)
+ {
+ sprintf (str, "%d", (int) newWipeAlgorithm);
+
+ SaveBufferToFile (str, GetConfigPath (TC_APPD_FILENAME_NONSYS_INPLACE_ENC_WIPE), strlen(str), FALSE);
+ }
+ else if (FileExists (GetConfigPath (TC_APPD_FILENAME_NONSYS_INPLACE_ENC_WIPE)))
+ {
+ remove (GetConfigPath (TC_APPD_FILENAME_NONSYS_INPLACE_ENC_WIPE));
+ }
+
+ sprintf (str, "%d", count);
+
+ return SaveBufferToFile (str, GetConfigPath (TC_APPD_FILENAME_NONSYS_INPLACE_ENC), strlen(str), FALSE);
+ }
+}
+
+
+// Repairs damaged sectors (i.e. those with read errors) by zeroing them.
+// Note that this operating fails if there are any write errors.
+int ZeroUnreadableSectors (HANDLE dev, LARGE_INTEGER startOffset, int64 size, int sectorSize, uint64 *zeroedSectorCount)
+{
+ int nStatus;
+ DWORD n;
+ int64 sectorCount;
+ LARGE_INTEGER workOffset;
+ byte *sectorBuffer = NULL;
+ DWORD dwError;
+
+ workOffset.QuadPart = startOffset.QuadPart;
+
+ sectorBuffer = (byte *) TCalloc (sectorSize);
+
+ if (!sectorBuffer)
+ return ERR_OUTOFMEMORY;
+
+ if (SetFilePointerEx (dev, startOffset, NULL, FILE_BEGIN) == 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+
+ for (sectorCount = size / sectorSize; sectorCount > 0; --sectorCount)
+ {
+ if (ReadFile (dev, sectorBuffer, sectorSize, &n, NULL) == 0)
+ {
+ memset (sectorBuffer, 0, sectorSize);
+
+ if (SetFilePointerEx (dev, workOffset, NULL, FILE_BEGIN) == 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+ if (WriteFile (dev, sectorBuffer, sectorSize, &n, NULL) == 0)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+ ++(*zeroedSectorCount);
+ }
+
+ workOffset.QuadPart += n;
+ }
+
+ nStatus = ERR_SUCCESS;
+
+closing_seq:
+
+ dwError = GetLastError();
+
+ if (sectorBuffer != NULL)
+ TCfree (sectorBuffer);
+
+ if (nStatus != ERR_SUCCESS)
+ SetLastError (dwError);
+
+ return nStatus;
+}
+
+
+static int OpenBackupHeader (HANDLE dev, const char *devicePath, Password *password, PCRYPTO_INFO *retMasterCryptoInfo, CRYPTO_INFO *headerCryptoInfo, __int64 deviceSize)
+{
+ LARGE_INTEGER offset;
+ DWORD n;
+ int nStatus = ERR_SUCCESS;
+ char *header;
+ DWORD dwError;
+
+ header = (char *) TCalloc (TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ if (!header)
+ return ERR_OUTOFMEMORY;
+
+ VirtualLock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+
+
+
+ offset.QuadPart = deviceSize - TC_VOLUME_HEADER_GROUP_SIZE;
+
+ if (SetFilePointerEx (dev, offset, NULL, FILE_BEGIN) == 0
+ || !ReadEffectiveVolumeHeader (TRUE, dev, (byte *) header, &n) || n < TC_VOLUME_HEADER_EFFECTIVE_SIZE)
+ {
+ nStatus = ERR_OS_ERROR;
+ goto closing_seq;
+ }
+
+
+ nStatus = ReadVolumeHeader (FALSE, header, password, retMasterCryptoInfo, headerCryptoInfo);
+ if (nStatus != ERR_SUCCESS)
+ goto closing_seq;
+
+
+closing_seq:
+
+ dwError = GetLastError();
+
+ burn (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ VirtualUnlock (header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);
+ TCfree (header);
+
+ dwError = GetLastError();
+
+ if (nStatus != ERR_SUCCESS)
+ SetLastError (dwError);
+
+ return nStatus;
+}
+
+
+static BOOL GetFreeClusterBeforeThreshold (HANDLE volumeHandle, int64 *freeCluster, int64 clusterThreshold)
+{
+ const int bitmapSize = 65536;
+ byte bitmapBuffer[bitmapSize + sizeof (VOLUME_BITMAP_BUFFER)];
+ VOLUME_BITMAP_BUFFER *bitmap = (VOLUME_BITMAP_BUFFER *) bitmapBuffer;
+ STARTING_LCN_INPUT_BUFFER startLcn;
+ startLcn.StartingLcn.QuadPart = 0;
+
+ DWORD bytesReturned;
+ while (DeviceIoControl (volumeHandle, FSCTL_GET_VOLUME_BITMAP, &startLcn, sizeof (startLcn), &bitmapBuffer, sizeof (bitmapBuffer), &bytesReturned, NULL)
+ || GetLastError() == ERROR_MORE_DATA)
+ {
+ for (int64 bitmapIndex = 0; bitmapIndex < min (bitmapSize, (bitmap->BitmapSize.QuadPart / 8)); ++bitmapIndex)
+ {
+ if (bitmap->StartingLcn.QuadPart + bitmapIndex * 8 >= clusterThreshold)
+ goto err;
+
+ if (bitmap->Buffer[bitmapIndex] != 0xff)
+ {
+ for (int bit = 0; bit < 8; ++bit)
+ {
+ if ((bitmap->Buffer[bitmapIndex] & (1 << bit)) == 0)
+ {
+ *freeCluster = bitmap->StartingLcn.QuadPart + bitmapIndex * 8 + bit;
+
+ if (*freeCluster >= clusterThreshold)
+ goto err;
+
+ return TRUE;
+ }
+ }
+ }
+ }
+
+ startLcn.StartingLcn.QuadPart += min (bitmapSize * 8, bitmap->BitmapSize.QuadPart);
+ }
+
+err:
+ SetLastError (ERROR_DISK_FULL);
+ return FALSE;
+}
+
+
+static BOOL MoveClustersBeforeThresholdInDir (HANDLE volumeHandle, const wstring &directory, int64 clusterThreshold)
+{
+ WIN32_FIND_DATAW findData;
+
+ HANDLE findHandle = FindFirstFileW (((directory.size() <= 3 ? L"" : L"\\\\?\\") + directory + L"\\*").c_str(), &findData);
+ if (findHandle == INVALID_HANDLE_VALUE)
+ return TRUE; // Error ignored
+
+ finally_do_arg (HANDLE, findHandle, { FindClose (finally_arg); });
+
+ // Find all files and directories
+ do
+ {
+ if (findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ {
+ wstring subDir = findData.cFileName;
+
+ if (subDir == L"." || subDir == L"..")
+ continue;
+
+ if (!MoveClustersBeforeThresholdInDir (volumeHandle, directory + L"\\" + subDir, clusterThreshold))
+ return FALSE;
+ }
+
+ DWORD access = FILE_READ_ATTRIBUTES;
+
+ if (findData.dwFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)
+ access = FILE_READ_DATA;
+
+ HANDLE fsObject = CreateFileW ((directory + L"\\" + findData.cFileName).c_str(), access, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+ if (fsObject == INVALID_HANDLE_VALUE)
+ continue;
+
+ finally_do_arg (HANDLE, fsObject, { CloseHandle (finally_arg); });
+
+ STARTING_VCN_INPUT_BUFFER startVcn;
+ startVcn.StartingVcn.QuadPart = 0;
+ RETRIEVAL_POINTERS_BUFFER retPointers;
+ DWORD bytesReturned;
+
+ // Find clusters allocated beyond the threshold
+ while (DeviceIoControl (fsObject, FSCTL_GET_RETRIEVAL_POINTERS, &startVcn, sizeof (startVcn), &retPointers, sizeof (retPointers), &bytesReturned, NULL)
+ || GetLastError() == ERROR_MORE_DATA)
+ {
+ if (retPointers.ExtentCount == 0)
+ break;
+
+ if (retPointers.Extents[0].Lcn.QuadPart != -1)
+ {
+ int64 extentStartCluster = retPointers.Extents[0].Lcn.QuadPart;
+ int64 extentLen = retPointers.Extents[0].NextVcn.QuadPart - retPointers.StartingVcn.QuadPart;
+ int64 extentEndCluster = extentStartCluster + extentLen - 1;
+
+ if (extentEndCluster >= clusterThreshold)
+ {
+ // Move clusters before the threshold
+ for (int64 movedCluster = max (extentStartCluster, clusterThreshold); movedCluster <= extentEndCluster; ++movedCluster)
+ {
+ for (int retry = 0; ; ++retry)
+ {
+ MOVE_FILE_DATA moveData;
+
+ if (GetFreeClusterBeforeThreshold (volumeHandle, &moveData.StartingLcn.QuadPart, clusterThreshold))
+ {
+ moveData.FileHandle = fsObject;
+ moveData.StartingVcn.QuadPart = movedCluster - extentStartCluster + retPointers.StartingVcn.QuadPart;
+ moveData.ClusterCount = 1;
+
+ if (DeviceIoControl (volumeHandle, FSCTL_MOVE_FILE, &moveData, sizeof (moveData), NULL, 0, &bytesReturned, NULL))
+ break;
+ }
+
+ if (retry > 600)
+ return FALSE;
+
+ // There are possible race conditions as we work on a live filesystem
+ Sleep (100);
+ }
+ }
+ }
+ }
+
+ startVcn.StartingVcn = retPointers.Extents[0].NextVcn;
+ }
+
+ } while (FindNextFileW (findHandle, &findData));
+
+ return TRUE;
+}
+
+
+BOOL MoveClustersBeforeThreshold (HANDLE volumeHandle, PWSTR volumeDevicePath, int64 clusterThreshold)
+{
+ int drive = GetDiskDeviceDriveLetter (volumeDevicePath);
+ if (drive == -1)
+ {
+ SetLastError (ERROR_INVALID_PARAMETER);
+ return FALSE;
+ }
+
+ wstring volumeRoot = L"X:";
+ volumeRoot[0] = L'A' + (wchar_t) drive;
+
+ return MoveClustersBeforeThresholdInDir (volumeHandle, volumeRoot, clusterThreshold);
+}
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