5a1cef6381
This patch unconditionally applies the labeling of sessions and thereby removes the most common use case of 'Child_policy::filter_session_args'. Furthermore, the patch removes an ambiguity of the session labels of sessions created by the parent of behalf of its child, e.g., the PD session created as part of 'Child' now has the label "<child-name>" whereas an unlabeled PD-session request originating from the child has the label "<child-name> -> ". This way, the routing-policy of 'Child_policy::resolve_session_request' can differentiate both cases. As a consequence, the stricter labeling must now be considered wherever a precise label was specified as a key for a session route or a server- side policy selection. The simplest way to adapt those cases is to use a 'label_prefix' instead of the 'label' attribute. Alternatively, the 'label' attribute may used by appending " -> " (note the whitespace). Fixes #2171
58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
================================
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Genode's Rump Kernel kernel port
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================================
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This repository contains the Genode version of the [http://wiki.netbsd.org/rumpkernel/ - rump kernel].
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The kernel is currently used to gain file-system access from within Genode. In
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order to achieve that, a Genode file-system server is located at
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_src/server/rump_fs_. For accessing the server through the libc, the _libc_fs_
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plugin can be facilitated, which is available in the _libports_ repository.
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Building instructions
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#####################
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In order to build the file-system server, issue
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! ./tool/ports/prepare_port dde_rump
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from Genode's toplevel directory.
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Add
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! REPOSITORIES += $(GENODE_DIR)/repos/dde_rump
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to your _etc/build.conf_ file of you build directory.
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Finally,
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! make server/rumps_fs
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called from your build directory will build the server. You may also specify
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! make run/rump_ext2
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to run a simple test scenario.
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Configuration
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#############
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Here is an example snippet that configures the server:
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!<start name="rump_fs">
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! <resource name="RAM" quantum="8M" />
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! <provides><service name="File_system"/></provides>
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! <config fs="ext2fs"><default-policy root="/" writeable="yes"/></config>
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!</start>
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The server is looking for a service that provides a Genode block session. If
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there is more than one block session in the system, the block session must be
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routed to the right block-session server. The value of the _fs_ attribute of
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the _config_ node can be one of the following: _ext2fs_ for EXT2, _cd9660_ for
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ISO-9660, or _msdos_ for FAT file-system support. _root_ defines the directory
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of the file system as seen as root directory by the client. The server hands
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most of its RAM quota to the rump kernel. This means the larger the quota is,
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the larger the internal block caches of the rump kernel will be.
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