How to enable or disable USB using C program?

Asked by Last Modified  

11 Answers

Learn C Language

Follow 0
Answer

Please enter your answer

Manoj Kumar Vishwakarma

MS SQL SERVER DBA Trainer

Already given answer kindy see in my back command.
Comments
Dislike Bookmark

IT Professional

http://www.mycfiles.com/2011/02/c-program-to-disable-and-enable-usb.html?m=1
Comments
Dislike Bookmark

Embedded, RTOS, C and Microcontroller

Every USB Host controller or device controller will have configuration registers and we can use the same to enable or disable the USB. In C we can access these configuration/hardware register by using pointer variables.
Comments
Dislike Bookmark

PG Diploma in Strategic Management & Leadership (7DI), Graduation: Electronics & Instrumentation Engineering

void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); }
Comments
Dislike Bookmark

Trainer

This is very small and easy code, once the block usb program executed the computer will not recognize any inserted usb drive, but we can reverse it by unblocking the usb port.
Comments
Dislike Bookmark

Programming Guru

In order to disable the usb port, write the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example...
read more
In order to disable the usb port, write the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example to disable usb port void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); } read less
Comments
Dislike Bookmark

The logic of the program is simple. The 'C' source file block_usb.c writes the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" to 'lock' the USB ports. Similarly, in the inverse process, the 'C' source file Unblock_usb.c...
read more
The logic of the program is simple. The 'C' source file block_usb.c writes the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" to 'lock' the USB ports. Similarly, in the inverse process, the 'C' source file Unblock_usb.c writes the DWORD value of 3 (011 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" to 'unlock' the USB ports. read less
Comments
Dislike Bookmark

C++ Training

The logic is: In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example to disable usb port void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); ...
Comments
Dislike Bookmark

Coding Expert

Save the code as block_usb.c and open it with turbo c compiler, after compilation it will create a block_usb.exe which is a simple program that will disable (block) all the USB ports of the computer hence you can block the usb port the unblocing or reversal is also possilble
Comments
Dislike Bookmark

embedded system trainer

It depends which platform you are referring to, If its windows - registry settings can help you out, however if its linux based - first step would be to look for any sysfs entry or IOCTL if they can help the application to do the job. However you can access the USB controller register to do so, however...
read more
It depends which platform you are referring to, If its windows - registry settings can help you out, however if its linux based - first step would be to look for any sysfs entry or IOCTL if they can help the application to do the job. However you can access the USB controller register to do so, however this can be done from the userspace only if the linux kernel is build with dev mem option. read less
Comments
Dislike Bookmark

View 9 more Answers

Related Questions

What is the use of header files in C language?
In C language, header files are used to organize and reuse code efficiently 6 Key uses of header files in C language are :1. Function declarations (Prototypes)2. Macro Definitions3. Type Definitions4....
Sachanth
0 0
7
Do we need to assign the length of characters to define a string?
Refer Yashwant kanitkar book
Kiran
0 0
6
Can an array be an lvalue?
When you say array, do you mean array name i.e. address, or array element. Yes, array element can be lvalue
Vinodha
Which is the best C language IDE/compiler for Windows?
For Windows, one of the widely regarded C language IDEs is Microsoft Visual Studio. It provides a comprehensive development environment with features like code highlighting, IntelliSense for smart code...
Deepashri
0 0
5
What are all the data types in C programming with their details?
C programming language supports several data types, which are categorized into two main groups: primitive or basic data types and derived data types. Primitive data types include: Integers: Represent...
Ganga
0 0
6

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Array vs Linked List
Array Linked List Accessing element is easy. Accessing element is difficult compare to Array. Easy to use. Difficult to use. Memory is Fixed size. Memory is variable size. If...

Umasankar Natarajan

0 0
0
Basics Of C And C++
C++ is powerful, highly flexible, and adaptable programming language that allows software engineers to organise and process information quickly and effectively. But this high-level language is relatively...

Dev Group

1 0
0
C Language
To get help in C window (for keywords, functions) press Alt +F1.To delete a single line , use the shortcut key CTRL +Y.If you got error about the path when you execute a C pgm, check the Options menu =>Directories.
T

Thilagam S.

0 0
0
Lets know about far, near and huge pointers for fresher interview purpose
All of these three candidates relate to 16 bit architecture where segmented memory architecture was there. They are not at all relevant for present days 32 or 64 bit architecture where the way of memory...

Shiladitya Munshi

0 0
0
Variables
Variables in C Language:A variable is a name that may be used to store a data value. Unlike constant, variables are changeable, we can change value of a variable during execution of a program. A programmer...

Venkateswararao S.

0 0
0

Recommended Articles

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

Make a Career in Mobile Application Programming

Almost all of us, inside the pocket, bag or on the table have a mobile phone, out of which 90% of us have a smartphone. The technology is advancing rapidly. When it comes to mobile phones, people today want much more than just making phone calls and playing games on the go. People now want instant access to all their business...

Read full article >

Learn Hadoop and Big Data

Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...

Read full article >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Noida
C Language Classes in Gurgaon
C Language Classes in Ghaziabad

Looking for C Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you