\input{configpres} \subsection{Linux Kernel-API} \title{Linux Kernel-API} % ---------------------------- \maketitle % ---------------------------- \begin{frame} \frametitle{Overview} \tableofcontents \end{frame} % ---------------------------- \begin{frame} \frametitle{Basics} \begin{itemize} \item Application: Userspace, unprivileged \item Driver: Kernel, privileged \item Userspace-to-Kernel API \begin{itemize} \item Syscalls \item Device Nodes \item Pseudo Filesystems \item Netlink Sockets \end{itemize} \end{itemize} \end{frame} % Most CPUs has two operation modes, an privileged and an unprivileged. % Linux supports this HW feature by separating the Userspace (Applications, % Libraries) from the Kernel (scheduling, memory-management, drivers). The % Linux Userspace API is the interfacebetween the Userspace and the Kernel. % The main interface are the syscalls. The file systemcalls and the devide % nodes allows specific HW access, without creating new syscalls. The pseudo % filesystems also extends the Userspace API, by externalize structured % information about the system to applications. The netlink sockets are % mainly for managing and controling Kernel subsystems, like network. \subsection{Devices} % ---------------------------- \input{linux-basics/api/frm_devicenodes.tex} \subsection{Pseudo FS} % ---------------------------- \input{linux-basics/api/frm_proc.tex} % ---------------------------- \input{linux-basics/api/frm_sysfs.tex} \subsection*{} \input{tailpres}