NetBSD

History

ozaki-r 040205ae93 Protect ifnet list with psz and psref The change ensures that ifnet objects in the ifnet list aren't freed during list iterations by using pserialize(9) and psref(9). Note that the change adds a pslist(9) for ifnet but doesn't remove the original ifnet list (ifnet_list) to avoid breaking kvm(3) users. We shouldn't use the original list in the kernel anymore.		2016-05-12 02:24:16 +00:00
..
dev	Avoid '.' in variable names which are expected to be passed to	2016-05-10 19:38:29 +00:00
fs	elide vax compiler bug.	2016-03-23 21:38:51 +00:00
include	regen syscall files	2016-05-06 10:19:40 +00:00
kern	Put the kernelside rump kernel headers into <rump-sys> instead of	2016-01-26 23:12:14 +00:00
librump	Protect ifnet list with psz and psref	2016-05-12 02:24:16 +00:00
net	Prevent LWP migrations between CPUs during upper layer processing	2016-04-19 05:48:10 +00:00
share	…
Makefile	…
Makefile.rump	describe => rumpdescribe	2015-11-15 13:50:10 +00:00
README.compileopts	Move librumpuser compile-time options into the librumpuser source	2016-01-25 00:24:23 +00:00
README.dirs	…
TODO	Remove solved item.	2015-09-08 12:14:20 +00:00
ldscript.rump	…
ldscript_sun.rump	…
linksyms_sun.c	…
listsrcdirs	Add uname to rump sources	2015-07-07 12:40:13 +00:00
makerumpsyscalls.sh	"rump_private.h" -> <rump-sys/kern.h>	2016-01-26 23:24:55 +00:00
rump.sysmap	regen	2015-06-18 15:19:50 +00:00
sunldgen.sh	…

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.