The USB device redirection works in a similar way as Spice. The
underlying 'dbus' channel is set to "org.qemu.usbredir" by default for
the client to identify the channel purpose (as specified in -display
dbus documentation).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Like a Spice port, a dbus serial must specify an associated channel name.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
By default, libvirt will start a private bus and tell QEMU to connect to
it. Instead, a D-Bus "address" to connect to can be specified, or the
p2p mode enabled.
D-Bus display works best with GL & a rendernode, which can be specified
with <gl> child element.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Start the daemon if necessary (it is already stopped in qemuProcessStop)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The remoteOpenConn() function was refactored recently. As a part
of that new variable @newconn was introduced which holds
virConnect object as it's being gradually constructed throughout
the function. At the very end, when everything succeeded the
variable is stolen into passed @conn. However, there was one
line missed in the refactor which still access the @conn instead
of @newconn leading to a NULL dereference.
Fixes: f7c422993e
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use a temporary variable 'newconn' to hold the newly opened connection
until we are ready to pass it back instead of the original connection.
This way we can avoid complicated 'error'/'cleanup' sections.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Refactor the code to use virTypedParamList which simplifies cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The 'identparams' typed parameter list obtained from
virIdentityGetParameters is leaked when called from
'virGetConnectGeneric'.
Use 'virTypedParamListFromParams' to absorb it into a virTypedParamList
which can be autofreed.
Note that the memleak is observable only when running in split-daemon
mode.
Closes: https://gitlab.com/libvirt/libvirt/-/issues/314
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The helper constructs a virTypedParamList from loose params.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Remove the argument from the function prototypes and the callback
handler.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Access the 'driver' struct from the private data rather than the passed
opaque pointer in preparation to remove the opaque pointer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Access the 'driver' struct from the private data rather than the passed
opaque pointer in preparation to remove the opaque pointer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Access the 'driver' struct from the private data rather than the passed
opaque pointer in preparation to remove the opaque pointer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Access the 'driver' struct from the private data rather than the passed
opaque pointer in preparation to remove the opaque pointer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to the qemu driver if we store the immutable driver pointer in
the VM private data struct we don't have to questionably pass it through
opaque pointers to callbacks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to the qemu driver if we store the immutable driver pointer in
the VM private data struct we don't have to questionably pass it through
opaque pointers to callbacks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The returned value is used to unlock the object, so all callers must
necessarily make use of the returned value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When dealing with fdsets only we don't need to pass the FD first as we
now generate fdset name directly. Also there are no more caveats in
passing multiple FDs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the 'direct' mode was separated and thus we don't have any
possible error case we can stop returning any values and simplify
callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This finishes the separation of the fdset and direct helpers. Remove
'qemuFDPassNewDirect' and all internals which were applicable only in
direct mode.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The callers adding the FDs are validating them regardless so this check
was redundant.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unix socket chardevs with FD passing need to use the direct mode so we
need to convert it to use qemuFDPassDirect.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Originally I envisioned a common set of APIs for both FD passing
approaches but it turns out they are not really compatible enough for it
to make sense to use one set of APIs.
As of such introduce a distinct set of APIs for the 'direct' mode, which
will later be used to convert all places that currently use
'qemuFDPassNewDirect' and later clean up the existing APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the internal documentation about qemu threading to the knowledge
base.
The conversion included rstizing of the text document, mainly just
fixing of the headline and enclosing function names and code examples
into code block sections.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The commandline generated from our XML->native convertor is the majority
of cases not usable without libvirt anyways and the situation will not
improve any more.
As of such there's no much utility of avoiding the use of stopped CPUs
flag in such case.
Remove the QEMU_BUILD_COMMAND_LINE_CPUS_RUNNING flag and the associated
logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Now that we store the state of the host FIPS mode setting in the qemu
driver object, we don't need to outsource the logic into
'qemuCheckFips'.
Additionally since we no longer support very old qemu's which would not
yet have --enable-fips we can drop the part of the comment about very
old qemus.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Automatically free the 'vm' temporary domain object and remove the
'cleanup' label and 'ret' helper variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Improve the debug log inside 'qemuBuildCommandLine' to include the name
from the definition and remove useless data such as the pointer to the
qemuDriver object or qemuCaps.
Additionally remove the non-specific debug statements:
VIR_DEBUG("Building emulator command line");
from the two callers of qemuBuildCommandLine.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Rather than re-query all the time we can cache the state of FIPS of the
host as it will not change during the runtime of the guest.
Introduce a 'hostFips' flag to 'virQEMUDriver' and move the code
checking the state from 'qemuCheckFips' to 'qemuStateInitialize' and
also populate 'hostFips' in qemuxml2argvtest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Introduce 'qemuBuildCommandLineFlags' and use it instead of specific
flag booleans.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
We already format a commandline using FD passing for the tap devices so
formatting the 'vhost' file descriptors won't make it any less usable
directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
In the qemu driver certain configs such as disk throttling or CPU
hotplug is configured by interacting with the monitor at the startup
phase of the hypervisor and thus is not part of the "native config" as
returned by 'virConnectDomainXMLToNative'.
Similarly at least the commandline for qemu contains resources passed
via file descriptors which are obviously not part of the returned
"native config".
Add a paragraph into the documentation outlining that the native
configuration might not be completely usable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Add support for the mode and add the corresponding qemuxml2argv test
case.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The 'absolute' clock offset type has a 'start' attribute which is an
unix epoch timestamp to which the hardware clock is always set at start
of the VM.
This is useful if some VM needs to be kept set to an arbitrary time for
e.g. testing or working around broken software.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The last use of this function was removed in commit 6d161bcc, so the
function is no longer used except as an internal implementation for
virCommandPassFD().
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
commit f9236200 removed the last use of this function, so it can be
dropped.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
