Types of System Calls
Services provided by an OS are typically related to any kind of operation that a user program can perform like creation, termination, forking, moving, communication etc. Similar types of operations are grouped into one single system call category. System calls are classified into the following categories :
Different Types of System Calls in OS
System calls are interfaces provisioned by the operating system to allow user-level applications to interact with low-level hardware components & make use of all the services provided by the kernel, which is a core component and the heart of an operating system that manages all the hardware and the services provided by the OS. These system calls are essential for every process to interact with the kernel and leverage the services provided by it.
System calls are basically an interface between a process and the operating system. And they’re the only way to switch from user mode to kernel mode.
Pre-requisite: Introduction to System Calls