The interface that provides access to the services of the operating system is the system call. System calls act as the programming interface between application programs and the operating system, allowing user programs to request services such as file operations, process control, and device management. They are typically implemented as functions written in high-level languages like C or C++ and are accessed via APIs (Application Programming Interfaces) rather than directly by user programs
. In summary:
- System calls provide the essential interface to access OS services.
- They enable communication between user applications and the OS kernel.
- Examples include system calls like open, close, read, and write.
This mechanism ensures controlled and secure access to OS resources and hardware
