$NetBSD: README.dirs,v 1.12 2013/01/08 13:12:26 pooka Exp $ The following is a quick rundown of the current directory structure. First, components in the kernel namespace, i.e. compiled with -D_KERNEL sys/rump/librump - rump kernel base and factions /rumpkern - kernel core, e.g. syscall, interrupt and lock support /rumpdev - device support, e.g. autoconf subsystem /rumpnet - networking support and sockets layer /rumpvfs - file system support sys/rump/include /machine - used for architectures where the rump kernel ABI is not yet the same as the kernel module ABI. will eventually disappear completely /rump - kernel headers installed to userspace sys/rump/dev - device components, e.g. audio, raidframe, usb drivers sys/rump/fs - file system components /lib/lib${fs} - kernel file system code sys/rump/net - networking components /lib/libnet - subroutines from sys/net, e.g. route and if_ethersubr /lib/libnetinet - TCP/IP /lib/libvirtif - a virtual interface which uses host tap(4) to shovel packets. This is used by netinet and if_ethersubr. /lib/libshmif - a virtual interface which uses a memory mapped file as an ethernet bus. works completely unprivileged. /lib/libsockin - implements PF_INET using host kernel sockets. This is mutually exclusive with net, netinet and virtif. The rest are out-of-kernel components (i.e. no -D_KERNEL). hypercall interface: src/lib/librumpuser The "rumpuser" hypercall interfaces are used by a rump kernel to access host resources. remote client interface: src/lib/librumpclient The rumpclient library provides remote access to rump kernel servers. system call hijacking: src/lib/librumphijack The rumphijack library allows intercepting system calls and redirecting them to a rump kernel server instead of the host kernel. In other words, it allows existing binaries to request indicated services from a rump kernel instead of from the host kernel. Users: src/lib /libp2k - puffs-to-vfs adaption layer, userspace namespace /libukfs - user kernel file system, a library to access file system images (or devices) directly in userspace without going through a system call and puffs. It provides a slightly higher interface than syscalls. src/usr.sbin/puffs rump_$fs - userspace file system daemons using the kernel fs code src/share/examples/rump Various examples detailing use of rump kernels in different scenarios. These are provided source-only.