* [How the Linux kernel handles a system call](syscall-2.md) - this part describes how the Linux kernel handles a system call from a userspace application.
* [Implementation of the open system call](syscall-5.md) - this part describes implementation of the [open](http://man7.org/linux/man-pages/man2/open.2.html) system call.
* [Limits on resources in Linux](https://github.com/0xAX/linux-insides/blob/master/SysCall/syscall-6.md) - this part describes implementation of the [getrlimit/setrlimit](https://linux.die.net/man/2/getrlimit) system calls.