System calls

This chapter describes the system call concept in the Linux kernel.

• Introduction to system call concept - this part is introduction to the system call concept in the Linux kernel.
• How the Linux kernel handles a system call - this part describes how the Linux kernel handles a system call from a userspace application.
• vsyscall and vDSO - third part describes vsyscall and vDSO concepts.
• How the Linux kernel runs a program - this part describes startup process of a program.
• Implementation of the open system call - this part describes implementation of the open system call.
• Limits on resources in Linux - this part describes implementation of the getrlimit/setrlimit system calls.