NetBSD

History

njoly 4a806b5236 Regen for mknodat(2) device argument type change.		2013-10-17 18:04:40 +00:00
..
dev	Move the bus_dma implementation that works only with ugenhc into the	2013-09-19 17:55:22 +00:00
fs	why does rump have to have its own private build system?	2013-07-20 20:43:09 +00:00
include	Regen for mknodat(2) device argument type change.	2013-10-17 18:04:40 +00:00
kern	Regen for utimensat(2).	2013-10-05 09:22:43 +00:00
librump	Regen for mknodat(2) device argument type change.	2013-10-17 18:04:40 +00:00
net	NPF: G/C n-code in favour of BPF byte-code. Delete lots of code, mmm!	2013-09-19 01:49:07 +00:00
ldscript_sun.rump	Generate support for sun ld.	2013-03-15 12:13:07 +00:00
ldscript.rump	Introduce RUMP_COMPONENT. It behaves mostly like a simplified	2010-03-01 13:12:19 +00:00
linksyms_sun.c	Generate support for sun ld.	2013-03-15 12:13:07 +00:00
listsrcdirs	Pull in all of sys/dev (i.e. don't skip pci/ and microcode/).	2013-09-19 16:16:03 +00:00
Makefile	Add infrastructure for kern compnents. This is meant for those	2010-06-10 21:56:42 +00:00
Makefile.rump	RUMPCOMP_USEROBJ -> RUMPOBJ_NORENAME	2013-09-03 19:57:02 +00:00
README.dirs	Update a bit.	2013-01-08 13:12:26 +00:00
sunldgen.sh	Support generating support for Sun ld.	2013-03-15 12:12:16 +00:00
TODO	Update a bit. yay, this file isn't completely append-only!	2013-01-08 13:45:28 +00:00

README.dirs

	$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.