system call table

A system call table is like a reference guide that lists the different services an operating system offers to software programs. When a program needs to do something hardware-related or access protected resources—like opening a file or printing a document—it uses a system call. The table connects these requests to the actual code that performs the task, acting as a bridge between applications and the core system functions. It ensures that programs interact safely and correctly with the computer's hardware and core services.