Description: The System Call Table is a fundamental data structure in operating systems that acts as a bridge between user mode and kernel mode. Its primary function is to map system calls, which are requests for services from the operating system made by user-mode applications, to their corresponding handler functions in kernel mode. This table allows the operating system to efficiently manage resource requests, such as file access, network communication, and process management, ensuring that applications do not directly interfere with hardware or the system’s core. The System Call Table is crucial for maintaining system stability and security, as it serves as an access control mechanism that validates and directs application requests. Additionally, its design enables the operating system to implement security policies and resource management, ensuring that applications operate within a controlled and predictable environment. In summary, the System Call Table is an essential component that facilitates interaction between application software and system hardware, ensuring efficient and secure operation of the operating system.
