private void LockFile()
{
// Lock the zipped file, other process only can ready it.
UnlockFile();
_fileSafeHandle = Win32Wrapper.CreateFile(_fileName, Win32Wrapper.DESIRED_ACCESS_GENERIC_WRITE, Win32Wrapper.SHARE_MODE_READ,
IntPtr.Zero, Win32Wrapper.OPEN_EXISTING, 0, IntPtr.Zero);
if (_fileSafeHandle.IsInvalid)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), _fileName);;
}
}
// Lock working directory so that the directory cannot be modified by other process.
private void LockWorkingDirectory()
{
// Lock the working directory, other process CAN NOT access it. Use Win32Wrapper.SHARE_MODE_NONE, not Win32Wrapper.SHARE_MODE_READ.
// This way, we prevent third-party software(like anti-virus, or delete manually by people) from accessing the document working
// folder and it can not delete any files and sub directories.
UnlockWorkingDirectory();
_directorySafeHandle = Win32Wrapper.CreateFile(_workingDirectory.FullName, Win32Wrapper.DESIRED_ACCESS_GENERIC_WRITE,
Win32Wrapper.SHARE_MODE_NONE /*Win32Wrapper.SHARE_MODE_READ*/, IntPtr.Zero,
Win32Wrapper.OPEN_EXISTING, Win32Wrapper.FILE_FLAG_BACKUP_SEMANTICS, IntPtr.Zero);
if (_directorySafeHandle.IsInvalid)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), _workingDirectory.FullName);
}
}
