Solved

How can i hideo or block access to drives?

Posted on 1998-03-08
1
211 Views
Last Modified: 2010-04-06
How Can I hide or block access to floppy drive and Cd-Rom drive throught Delphi?
0
Comment
Question by:narabe
1 Comment
 
LVL 8

Accepted Solution

by:
ZifNab earned 20 total points
ID: 1360271
Hi narabe,

Yo, just found out too. This should it be, but haven't tried it out fully yet.

I'm going to put also in my component TCDEvents. It's freeware and maybe something just for you? Have a look at it and let me know what you think about it. You can find it at Torry's or super delphi pages...

const
     VWIN32_DIOC_DOS_IOCTL = 1;
     VWIN32_DIOC_DOS_INT13 = 4;

procedure TForm1.Button1Click(Sender: TObject);
  type
   PDIOC_REG = ^TDIOC_Registers;
   TDIOC_Registers = record
     Reg_EBX, Reg_EDX, Reg_ECX, Reg_EAX,
     Reg_EDI, Reg_ESI, Reg_Flags : DWORD
   end;
Var I, W: dWord;
    WBuffer: array[0..512 * 18] of byte;
    Reg: TDIOC_Registers;
    Result: Boolean;
    cb: dword;
begin
  Device:= CreateFile('\\.\vwin32',0, FILE_SHARE_READ or
                      FILE_SHARE_WRITE, nil, 0,
FILE_FLAG_DELETE_ON_CLOSE, 0);
// Locking...

  reg.reg_EAX:= $440D;
  reg.reg_EBX:= $0000;  // BL $00 to $7F  for Floppy,  $80 to $FF for
Hard-disk
  reg.reg_ECX:= $084B;
  reg.reg_EDX:= $0000;
  Result:= DeviceIoControl(Device, VWIN32_DIOC_DOS_IOCTL, @reg,
sizeof(reg),
                           @reg, sizeof(reg), cb, nil);
  if ((Result = False) or ((reg.reg_Flags and $0001) = 1)) then
    ShowMessage('Lock failure...');

// Unlocking

  reg.reg_EAX:= $440D;
  reg.reg_EBX:= $0000;  // BL $00 to $7F  for Floppy,  $80 to $FF for
Hard-disk
  reg.reg_ECX:= $086B;
  reg.reg_EDX:= $0000;
  Result:= DeviceIoControl(Device, VWIN32_DIOC_DOS_IOCTL, @reg,
sizeof(reg),
                           @reg, sizeof(reg), cb, nil);
  if ((Result = False) or ((reg.reg_Flags and $0001) = 1)) then
    ShowMessage('Unlock failure...');

  CloseHandle(Device);

end;

See too: Interrupt 21h Function 440Dh Minor Code 6Bh  Unlock Physical
Volume, and
 Interrupt 21h Function 440Dh Minor Code 4Bh  Lock Physical Volume in
Win32.HLP

Good luck...

Regards, Zif.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Migrating to Microsoft Office 365 is becoming increasingly popular for organizations both large and small. If you have made the leap to Microsoft’s cloud platform, you know that you will need to create a corporate email signature for your Office 365…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

861 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now