Backup cemail.vol

Backup cemail.vol

• Rich Hoffman

  I don't have the System.StackTrace....um using .NET Compact framework 1.0.....my ex.Message return IOException.

  
  

• him19010

  This is my code:

  FileInfo myFile = new FileInfo(@"\cemail.vol");

  myFile.MoveTo(@"\cemail_bck.vol");

  But i give same IOException.

  
  

• cssjm

  mgaur_MSFT wrote:

  IOException is because of sharing violation. Do the following: Rename cemail.vol to say cemail_bak.vol Restart the phone/ppc, You'll see a new file with name cemail.vol is created Copy the cemail_bak.vol to a new location. Rename the newer cemail.vol to cemail_delete.vol and rename your cemail_bak.vol to cemail.vol. Restart and delete your cemail_delete.vol Manav

  It does not allow to rename either. Same IOexception error. What do I do

  
  
  

• Toseef

  cemail.vol is a system file and can not be deleted. It is used by MAPI for storing the SMS and mail items. The storage format is EDB. More information about CEDB and EDB database is available http://msdn.microsoft.com/library/default.asp url=/library/en-us/wcedata5/html/wce50grfdatabasereference340.asp

  This article http://www.codecomments.com/archive425-2006-5-904897.html has information about a sample source code for mounting and enumerating records in cemail.vol database.

  Closing this topic as answered. Please post your followon questions about the database access to http://forums.microsoft.com/MSDN/ShowForum.aspx ForumID=152&SiteID=1

  Thanks,

  Manav

  
  
  

• Yeshia

  Nothing to do!! I have killed poutlook.exe process and i have same exception, so i have killed also tmail.exe and pMSNServer.exe...but without success.

  :-(

  
  

• StUdEnT in distress

  Can you please post the stack trace of the exception

  Manav

  
  
  

• DeltaXXX

  You can't rename cemail.vol, open all database in cemail.vol and read all properties.

  This is my code :

  BOOL BackupMail()

  {

  CEGUID ceguidCemail;

  CEGUID ceguidBackUp;

  //Initialisation

  CREATE_INVALIDGUID(&ceguidCemail);

  CREATE_INVALIDGUID(&ceguidBackUp);

  if(!CeMountDBVolEx(&ceguidCemail, L"cemail.vol", NULL, OPEN_EXISTING))

  {

  DWORD dwErro = GetLastError();

  return FALSE;

  }

  if(!CeMountDBVolEx( &ceguidBackUp, L"cemail_Backup.vol", NULL, CREATE_ALWAYS | EDB_MOUNT_FLAG))

  {

  return FALSE;

  }

  HANDLE hDatabaseEnumHandle = INVALID_HANDLE_VALUE;

  if((hDatabaseEnumHandle = CeFindFirstDatabaseEx(&ceguidCemail, 0)) == INVALID_HANDLE_VALUE)

  {

  return FALSE;

  }

  CEOID ceoidFind = 0;

  while(ceoidFind = CeFindNextDatabaseEx(hDatabaseEnumHandle, NULL))

  {

  HANDLE hSession = CeCreateSession(&ceguidCemail);

  HANDLE hDBOpened = INVALID_HANDLE_VALUE;

  hDBOpened = CeOpenDatabaseInSession(

  hSession,

  &ceguidCemail,

  &ceoidFind,

  NULL,

  NULL,

  CEDB_AUTOINCREMENT,

  NULL);

  if(hDBOpened == INVALID_HANDLE_VALUE)

  {

  DWORD error = GetLastError();

  return FALSE;

  }

  // get informations

  BY_HANDLE_DB_INFORMATION hDBOpenedInfo;

  hDBOpenedInfo.wVersion = BY_HANDLE_DB_INFORMATION_VERSION;

  if(!CeGetDBInformationByHandle(hDBOpened, &hDBOpenedInfo))

  {

  DWORD dwError = GetLastError();

  return FALSE;

  }

  CEOIDINFOEX cdDb;

  CEOID ceoidFindRecorde;

  CeOidGetInfoEx2(&ceguidCemail,ceoidFindRecorde, &cdDb);

  // create a copy

  CEOID ceoidDBaseCopy = 0;

  if(!(ceoidDBaseCopy = CeCreateDatabaseWithProps(

  &ceguidBackUp,

  &hDBOpenedInfo.infDatabase,

  0,

  NULL)))

  {

  DWORD dwErro = GetLastError();

  return FALSE;

  }

  //open the copy

  HANDLE hSession = CeCreateSession(&ceguidBackUp);

  HANDLE hDBaseCopyHandle = INVALID_HANDLE_VALUE;

  hDBaseCopyHandle = CeOpenDatabaseInSession(

  hSession,

  &ceguidBackUp,

  &ceoidDBaseCopy,

  hDBOpenedInfo.infDatabase.szDbaseName,

  NULL,

  CEDB_AUTOINCREMENT,

  NULL);

  if(hDBaseCopyHandle == INVALID_HANDLE_VALUE)

  {

  return FALSE;

  }

  // get informations

  BY_HANDLE_DB_INFORMATION hDBOpenedInfo;

  hDBOpenedInfo.wVersion = BY_HANDLE_DB_INFORMATION_VERSION;

  if(!CeGetDBInformationByHandle(hDBaseCopyHandle, &hDBOpenedInfo))

  {

  DWORD dwError = GetLastError();

  return FALSE;

  }

  DWORD dwCpt = 0;

  CEOID ceoidFindRecord = 0;

  WORD dwPropId = 0;

  CEPROPVAL* Buffer = NULL;

  DWORD dwSizeOfBuffer = 0;

  HANDLE hHeap = NULL;

  hHeap = GetProcessHeap();

  if(hHeap == NULL)

  return FALSE;

  while(ceoidFindRecord = CeReadRecordPropsEx(

  hDBOpened, // Handle of the database

  CEDB_ALLOWREALLOC, // Use LocalAlloc to get the buffer

  &dwPropId, // Number of properties retrieved

  NULL, // NULL means retrieve all properties.

  (LPBYTE*)&Buffer, // Buffer receives property data.

  &dwSizeOfBuffer, // Handle to the heap for allocating the record when

  // CEDB_ALLOWREALLOC is specified

  hHeap)) // A handle to an application-created

  dwCpt++;

  if(GetLastError() != ERROR_NO_MORE_ITEMS)

  return false;

  free(Buffer);

  Buffer = NULL;

  CeSeekDatabaseEx(hDBOpened, CEDB_SEEK_BEGINNING, 0, 0, NULL);

  ceoidFindRecord = 0;

  DWORD dwNumberOfRecordFound = 0;

  BOOL esito;

  while(dwNumberOfRecordFound++ < dwCpt)

  {

  // Find record

  ceoidFindRecord = CeReadRecordPropsEx(

  hDBOpened, // Handle of the database.

  CEDB_ALLOWREALLOC, // Use LocalAlloc to get the buffer.

  &dwPropId, // Number of properties retrieved

  NULL, // NULL means retrieve all properties.

  (LPBYTE*)&Buffer, // Buffer receives property data.

  &dwSizeOfBuffer, // Handle to the heap for allocating the record when

  // CEDB_ALLOWREALLOC is specified.

  hHeap); // A handle to an application-created

  if(!ceoidFindRecord)

  {

  DWORD dwError = GetLastError();

  return FALSE;

  }

  // Add property in backupDB

  CEOID ceoidRecordAdd;

  ceoidRecordAdd = CeWriteRecordProps(

  hDBaseCopyHandle, // Handle to DB

  0, // 0=> add new record

  dwPropId, // propID

  Buffer); // BLOB buffer record

  // buffer

  if(!ceoidRecordAdd)

  {

  DWORD dwError = GetLastError();

  MessageBox(0, L"Error", L"Error", 1);

  return FALSE;

  }else

  {

  //MessageBox(0, L"Ok", L"Ok", 1);

  }

  //free(temp);

  //temp = NULL;

  free(Buffer);

  Buffer = NULL;

  }

  }

  if(!CeFlushDBVol(&ceguidCemail))

  return FALSE;

  if(!CeFlushDBVol(&ceguidBackUp))

  return FALSE;

  if(!CeUnmountDBVol(&ceguidCemail))

  return FALSE;

  if(!CeUnmountDBVol(&ceguidBackUp))

  return FALSE;

  return TRUE;

  }

  
  

• ChandraP

  Although I have not tried this but this should let you achieve your objective.

  1. Use Remote Process viewer that comes with VS installation. Connect to your device/emulator and kill poutlook.exe (Pocket Outlook).

  2. Now you can use Remote File Viewer to rename the file and copy it elsewhere.

  Manav

  
  
  

• magikalpnoi

  Hi,

  In WM 5.0 you can not rename, delete and etc. '\cemail.vol'. It is placed in distinct storage.

  
  

• Larry Blanton

  Thanks, im starting with this solutions.

  
  

• chakravarthy_b

  IOException is because of sharing violation. Do the following:

  • Rename cemail.vol to say cemail_bak.vol
  • Restart the phone/ppc, You'll see a new file with name cemail.vol is created
  • Copy the cemail_bak.vol to a new location.
  • Rename the newer cemail.vol to cemail_delete.vol and rename your cemail_bak.vol to cemail.vol.
  • Restart and delete your cemail_delete.vol

  Manav

  
  
  
• Backup cemail.vol