The operating system maintains a “system call table” that has pointers to the functions that implement the system calls ... to the kernel without the need of rebooting the machine. For example, it is ...

Offering detailed explanations and numerous code examples ... s hardware and device drivers. An OS provides a uniform interface for I/O devices that perform a wide variety of functions via the ...

A description is that BPF is a verified-to-be-safe, fast to switch-to, mechanism, for running code in Linux kernel space to react to events such as function ... For example, in the Linux kernel ...

The above is the general procedure for operating files on the OS, but you can also read and write files using the mmap system call ... such as 'functions do_syscall_64' and 'entry_SYSCALL_64'.

Most SAS functions are completely described in the SAS functions and CALL routines portion of SAS Language Reference: Dictionary. The functions that are described here have syntax or behavior that is ...