genode

mirror of https://github.com/genodelabs/genode.git synced 2024-12-27 01:11:06 +00:00

History

Norman Feske 6609aafb05 Replace Quota_exceeded by Insufficient_ram_quota This patch replaces the 'Parent::Quota_exceeded', 'Service::Quota_exceeded', and 'Root::Quota_exceeded' exceptions by the single 'Insufficient_ram_quota' exception type. Furthermore, the 'Parent' interface distinguished now between 'Out_of_ram' (the child's RAM is exhausted) from 'Insufficient_ram_quota' (the child's RAM donation does not suffice to establish the session). This eliminates ambiguities and removes the need to convert exception types along the path of the session creation. Issue #2398		2017-05-31 13:16:05 +02:00
..
include	Fix some deprecated warnings	2017-03-24 16:20:03 +01:00
lib	rump_fs: Transition to new API	2017-01-13 13:07:13 +01:00
patches	dde_rump: don't build non-Genode shared libraries	2015-05-26 09:39:48 +02:00
ports	dde_rump: don't build non-Genode shared libraries	2015-05-26 09:39:48 +02:00
run	rump_fs: handle errors on mkdir correctly	2017-03-24 16:20:05 +01:00
src	Replace Quota_exceeded by Insufficient_ram_quota	2017-05-31 13:16:05 +02:00
README	Make label prefixing more strict	2016-11-30 13:37:07 +01:00

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

! ./tool/ports/prepare_port dde_rump

from Genode's toplevel directory.


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"><default-policy 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.