The ioctl system call is a low level I/O system call that allows the developer a fine-grained ability to change certain things about devices. For example, it can let you use asynchronous I/O handling instead of synchronous, blocking or unblocking, etc.
Since this is such a low level command the abilities will vary widely with the Operating System and the actual device. It should only be used by device handling code that knows exactly what the effect will be.
there is no IOCTL in windows programming. You will find device control methods for windows in the following pagehttp://msdn.microsoft.com/en-us/library/aa363219%28VS.85%29.aspx
on the manufacturers site for a recovery tool.
Any hardware interaction requires some type of syscall, but most every imaginable interaction is already implemented. Rarely are new syscalls added. The ioctl mechanism is often used to implement a similar type of call without all of the necessary syscall framework.
A System call is a mechanism used by an application for requesting a service. What is system calls? In computing, a system call ...
call of duty system requirements
The system call is related to the file system because of the program that initializes the access to a file.
when a process or anything makes a system call ,it goes in kernel(operating system).
Call a plumber.
A system call is started with some form of trap-instruction.
A "System call" you be a function accessible from a programming language to the base hardware of the computer (eg to get the time).
you call it astronomy
We call it the Solar system.