With the change of the Timer::Session interface, all scenarios that use
the timer use core's SIGNAL service. So we need to route sessions
accordingly.
In addition to the adaptation to the changed timer, this patch removes
some stale examples that predate the run tool and are no longer used.
This patch simplifies the way of how Genode's base libraries are
organized. Originally, the base API was implemented in the form of many
small libraries such as 'thread', 'env', 'server', etc. Most of them
used to consist of only a small number of files. Because those libraries
are incorporated in any build, the checking of their inter-dependencies
made the build process more verbose than desired. Also, the number of
libraries and their roles (core only, non-core only, shared by both core
and non-core) were not easy to capture.
Hereby, the base libraries have been reduced to the following few
libraries:
- startup.mk contains the startup code for normal Genode processes.
On some platform, core is able to use the library as well.
- base-common.mk contains the parts of the base library that are
identical by core and non-core processes.
- base.mk contains the complete base API implementation for non-core
processes
Consequently, the 'LIBS' declaration in 'target.mk' files becomes
simpler as well. In the most simple case, only the 'base' library must
be mentioned.
Fixes#18
Cap_sessions and portals created via the sessions are nowadays freed up during
c++ object destruction. Because of that the exception portals for a vCPU thread
get be revoked as soon as the cap_session object leaves its scope.
Keep one cap_session for the whole lifetime of the vmm to avoid disappearing
exception portals.
Related to #582.
The setup now uses nitpicker and nit_fb to display several instances of
vancouver. The guest OS binaries must be supplied in the
'<build-dir>/bin' directory manually.
Furthermore, the patch lets launchpad pass Block, Nic, and Rtc to the
parent.
Vancouver can now assign block devices to guests using the Block
interface. The machine has to be configured to use a specified drive,
which could be theoretically routed to different partitions or services
via policy definitions. Currently the USB driver only supports one
device. Genode's AHCI driver is untested.
If the session quota is too low, random pagefaults can occur on the
stack.
According to @Nils-TUD, it is necessary to protect the DiskCommit
messages with a lock against deadlocking with the timer. Observations
showed that this mitigates some problems with Gentoo on real hardware.
Vancouver is now able to use the Intel 82576 device model from NUL to
give VMs access to the network via the nic_bridge service. In order to
integrate the device model, it had to be renamed to i82576 due to XML
limitations. This is done by a patch applied via the 'make prepare'
mechanism.
Although current network card models in Vancouver panic if they can't
get a MAC address, the OP_GET_MAC hostop now fails gracefully in the
case where no nic_drv or nic_bridge is available.
The guest VM can now be provided with a framebuffer and keyboard input.
Mouse positioning of the guest is a problem. Because the PS2 model applies
some calculations to the movement values, it can happen that overflows mess
with the cursor. Therefore the handling was changed and only movements of 1
and -1 are sent. Since absolute positioning is not possible with PS2, we
have to live with this limitation until USB HID is implemented.
For the framebuffer size in Vancouver the configuration value in the machine
XML node is used. It is possible to map the corresponding memory area
directly to the guest, regardless if it is from nitpicker,
liquid_framebuffer or vesa_drv. The guest is provided with two modes (text
mode 3 and graphics mode 0x114 (0x314 in Linux).
Pressing LWIN+END while a VM has focus resets the virtual machine. Also,
RESET and DEBUG key presses will not be forwarded to the VM anymore.
It is possible to dump a VM's state by pressing LWIN+INS keys.
The text console is able to detect idle mode, unmaps the buffer from the
guest and stops interpreting. Upon the next pagefault in this area, it
resumes operation again. The code uses a simple checksum mechanism instead
of a large buffer and memcmp to detect an idle text console. False
positives don't matter very much.
When an EPT/NPT fault occurs during IDT vectoring, the original event must
be reinjected. Additionally we may have to inject an IRQ window if another
event is already pending.
With this patch, the 'Signal_receiver::dissolve()' function does not return
as long as the signal context to be dissolved is still referenced by one
or more 'Signal' objects. This is supposed to delay the destruction of the
signal context while it is still in use.
Fixes#594.
With this patch the destruction of Noux 'Child' objects gets delayed
further until the exit signal has been dispatched. This prevents the
self-destruction of the signal dispatcher, which is a member of the
'Child' object.
Fixes#603.
Several users of the signal API used custom convenience classes to
invoke signal-handling functions on the reception of incoming signals.
The 'Signal_dispatcher' pattern turned out to be particularly useful. To
avoid the duplication of this code across the code base, this patch
adds the interface to 'base/signal.h'.
Furthermore, the patch changes the 'Signal::num()' return type from int
to unsigned because negative numbers are meaningless here.
Fixes#511
When matching the 'label' session argument using '<if-args>' in a
routing table, we can omit the child name prefix because it is always
the same for all sessions originating from the child anyway. Therefore,
this patch adds a special case for matching session labels. It makes the
expression of label-specific routing more intuitive.
Add functionality to lookup an object and lock it. Additional the case is
handled that a object may be already in-destruction and the lookup will deny
returning the object.
The object_pool generalize the lookup and lock functionality of the rpc_server
and serve as base for following up patches to fix dangling pointer issues.
File_io_channel now includes ioctl() because pseudo devices which are
implemented as a file-system, e.g. /dev/tty, are controlled via ioctl()
requests. The method is exported to the Vfs through the Vfs_io_channel
class.
The random file-system provides an arc4 based urandom implementation
which is needed for OpenSSL.
NOTE: the Arc4random class currently _does not collect enough_ random
bytes!
We will reuse the terminal connection in the stdio filesystem
to implement /dev/tty. Therefor we need to access the terminal
from different locations which is simplified if it is provided
by a singleton.
With this patch the make install target for Noux applications gets defined
in the 'NOUX_INSTALL_TARGET' make variable with 'install-strip' as default.
Fixes#503.
Since the number of the fds in the select call is not necassarily equal
to the number of fds SYSCALL_SELECT returns we have to reset the number
of fds given as argument to select().
This keeps OpenSSH from reading from a non-ready socket.
Fixes#494.
