genode/repos/dde_rump
Emery Hemingway 55c0a947e4 Move generic fs helpers to os/include/file_system
Fixes #1488
2015-05-06 10:55:17 +02:00
..
include base: const-correctness of Allocator interface 2015-04-17 16:13:22 +02:00
lib arm: enable cpu cortex_a15 compiler flag 2015-02-27 11:48:04 +01:00
patches dde_rump: Update to current version 2015-01-20 11:23:49 +01:00
ports ports: also hash patches with absolute path names 2015-01-27 12:17:53 +01:00
run autopilot: adapt runscripts to new run tool 2015-01-26 12:28:41 +01:00
src Move generic fs helpers to os/include/file_system 2015-05-06 10:55:17 +02:00
Makefile Enable hash checks for ports mechanism 2014-05-27 13:45:03 +02:00
README Move repositories to 'repos/' subdirectory 2014-05-14 16:08:00 +02:00

README

                             ================================
                             Genode's Rump Kernel kernel port
                             ================================

This repository contains the Genode version of the [http://wiki.netbsd.org/rumpkernel/ - rump kernel].
The kernel is currently used to gain file-system access from within Genode. In
order to achieve that, a Genode file-system server is located at
_src/server/rump_fs_. For accessing the server through the libc, the _libc_fs_
plugin can be facilitated, which is available in the _libports_ repository.

Building instructions
#####################

In order to build the file-system server, issue

! make prepare

from the directory this file is contained in.


Add

! REPOSITORIES += $(GENODE_DIR)/repos/dde_rump

to your _etc/build.conf_ file of you build directory.

Finally,

! make server/rumps_fs

called from your build directory will build the server. You may also specify

! make run/rump_ext2

to run a simple test scenario.


Configuration
#############

Here is an example snippet that configures the server:

!<start name="rump_fs">
!  <resource name="RAM" quantum="8M" />
!  <provides><service name="File_system"/></provides>
!  <config fs="ext2fs"><policy label="" root="/" writeable="yes"/></config>
!</start>

The server is looking for a service that provides a Genode block session. If
there is more than one block session in the system, the block session must be
routed to the right block-session server. The value of the _fs_ attribute of
the _config_ node can be one of the following: _ext2fs_ for EXT2, _cd9660_ for
ISO-9660, or _msdos_ for FAT file-system support. _root_ defines the directory
of the file system as seen as root directory by the client. The server hands
most of its RAM quota to the rump kernel. This means the larger the quota is,
the larger the internal block caches of the rump kernel will be.