Microsoft KB Archive/178317

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Ioctl.exe: How to Use Various Types of IOCTL

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Q178317

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The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) for Windows NT, versions 3.51, 4.0

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SUMMARY
The Ioctl.exe file demonstrates how to use various types of IOCTL and how the I/O manager handles the user I/O buffer in each case. This sample also helps you understand how to use some of the memory manager functions.

MORE INFORMATION
The following file is available for download from the Microsoft Download Center:

"Ioctl.exe" Release Date: Apr-1-1999

For additional information about how to download Microsoft Support files, click the article number below to view the article in the Microsoft Knowledge Base:

"Q119591 How to Obtain Microsoft Support Files from Online Services" Microsoft used the most current virus detection software available on the date of posting to scan this file for viruses. Once posted, the file is housed on secure servers that prevent any unauthorized changes to the file.

Generic Sample IOCTL Driver
The following are included with this file:


 * A Windows NT device driver to demonstrate how to use four different types of IOCTLs and some of the memory manager functions.
 * A simple test program that makes all four types of IOCTL calls to the driver.

This driver is an example of a minimal driver. Neither it nor the sample programs are intended to be used in a production environment. Rather, they are intended for educational purposes and as a skeleton driver.

Building the Driver and Examples
To compile the device driver:


 * 1) Invoke the checked or free build environment MS-DOS box.
 * 2) Run Build. This invokes the Microsoft make routines, which produce log files called Build.wrn and Build.log. The .wrn file contains warnings that no components have been extracted from certain libraries, even if the build succeeds. If the build does succeed, the driver can be found in the %basedir%\lib\i386\free or %basedir%\lib\i386\checked directory.
 * 3) Copy the SYS file to the %SystemRoot%\system32\drivers directory on your test machine.

To install the Sample IOCTL driver (Sioctl), use the Regini utility to create the entries listed in the Sioctl.ini file.

Testing

 * 1) Reboot your computer.
 * 2) Start the driver with "net start sioctl".
 * 3) Run Sioctl.exe.

Additional query words:

Keywords : kbfile kbsample kbDDK

Issue type :

Technology : kbAudDeveloper kbWinDDKSearch kbWin32sSearch kbWin32DDKSearch kbWin32DDKNT351 kbWin32DDKNT400 kbWin32DDKNTSearch