Linux Kernel System Programming

Rump introduction explains how functional components like file systems and networking stacks run in user space without modification, using the rump framework.

Compare docker-style containers that share the host kernel via cgroups and namespaces with rump from NetBSD, which runs components in user space for faster boot and isolation.

Discover how Linux system calls work, showing a 64-bit assembly hello world that uses syscalls 1 (write) and 60 (exit), with parameters passed in registers.

Explore how Linux kernel logs messages with printk into a ring buffer, and how /proc/kmsg and syslog/klogctl expose these logs to user space for reading and forwarding.