Extend virCommandProcessIO to include the send buffers in the poll
loop.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Mark a virCommand's inpipe (write-end of pipe) as non-blocking so that it
will never block when we were to try to write too many bytes to it while
it doesn't have the capacity to hold them.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the struct pollfd *fds to be allocated rather than residing
on the stack. This prepares it for the next patch where the size of
the array of fds becomes dynamic.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Implement virCommandSetSendBuffer() that allows the caller to pass a
file descriptor and buffer to virCommand. virCommand will write the
buffer into the file descriptor. That file descriptor could be the
write end of a pipe or one of the file descriptors of a socketpair.
The other file descriptor should be passed to the launched process to
read the data from.
Only implement the function to allocate memory for send buffers
and to free them later on.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Run 'swtpm socket --print-capabilities' and
'swtpm_setup --print-capabilities' to get the JSON object of the
features the programs are supporting and parse them into a bitmap.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Check whether previously found executables were updated and if
so look for them again. This helps to use updated features of
swtpm and its tools upon updating them.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Refactor virTPMEmulatorInit to use a loop with parameters. This allows
for easier extension later on.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Move qemuTPMEmulatorInit to virTPMEmulatorInit in virtpm.c and introduce
a few functions to query the executables needed for virCommands.
Add locking to protect the tool paths and return a copy of the tool paths
to callers wanting to access them so that we can run the initialization
function multiples time later on and detect when the executable gets updated.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Extend the TPM device XML parser and XML generator with emulator
state encryption support.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for usage type vTPM to secret.
Extend the schema for the Secret to support the vTPM usage type
and add a test case for parsing the Secret with usage type vTPM.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When using the ENUM macros, the compiler guards that the declaration
and implementation are in sync.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
qemuBlockJobRewriteConfigDiskSource rewrites the disk source only
according to the 'target'. This means that if someone would change the
inactive config of the VM to refer to a different disk a block job would
rewrite it when finishing a job which modifies the disk source.
Make sure that this does not happen by verifying that the source of the
config disk is the same.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
Since we copy everything from the original storage source including some
runtime data which are not relevant for the config we should clear them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
Both active block commit and block copy modify the disk source of the
active definition and thus also must modify the corresponding inactive
definition source so that the VM starts up later. This is currently
implemented in the legacy block job handler but the logic will be useful
also for the new handlers. Split it out which also simplifies it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
The <mirror> subelement is used in two ways: in a commit job to point to
existing storage, and in a block-copy job to point to additional
storage. We need a way to track only the distinct storage.
This patch introduces qemuBlockJobDiskRegisterMirror which registers the
mirror chain separately only for jobs which require it. This also comes
with remembering that in the status XML.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
Commit c412383796 used a value from wrong enum when setting the disk's
mirrorState variable. This meant that a 'READY' job would show up as
'PIVOTING'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
When returning to asynchronous block job handling the flag which
determines the handling method should be reset prior to flushing
outstanding events. If there's an event to process the handler may
invoke the monitor and another event may be received. We'd not process
that one. Reset the flag earlier.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainSnapshotDiskDataCollect copies the source of the disk from the
live config into the inactive config. Move this operation earlier so
that if we initialize it for use for the particular instance the
run-time-only data is not copied.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In case when the backing store can be represented with something
simpler such as a URI we can use it rather than falling back to the
json: pseudo-protocol.
In cases when it's not worth it (e.g. with the old ugly NBD or RBD
strings) let's switch to json.
The function is exported as we'll need it when overwriting the ugly
strings qemu would come up with during blockjobs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The block commit API checked 'disk->src->path' to see whether there
is a reasonable disk source to be committed. As the top image can be
e.g. backed by NBD the check is not good enough. Replace it by
virStorageSourceIsEmpty.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For the modern use cases we are going to use 'blockdev-snapshot' instead
of 'blockdev-snapshot-sync'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuBuildStorageSourceChainAttachPrepareBlockdev prepares the full
backing chain for attachment via blockdev. For snapshots we'll need to
prepare one image only as it needs to be plugged on top of the existing
chain.
This patch introduces qemuBuildStorageSourceChainAttachPrepareBlockdevTop
which prepares only @top similarly to the original function by splitting
out the functionality into an internal function so that the API does not
change.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit 042c95bd19 qemuBuildStorageSourceChainAttachPrepareBlockdev
was added but the comment for the function mentions
qemuBuildStorageSourceChainAttachPrepareDrive. Fix the mistake.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that we track the job separately we watch only for the abort of the
one single block job so the comment is no longer accurate. Also
describing asynchronous operation is not really necessary.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With -blockdev:
- we track the job and check it after restart
- have the ability to ask qemu to persist it to collect result
- have the ability to report errors.
This solves all points the comment outlined so remove it. Also all jobs
handle the disk state modification along with the event so there's
nothing special the comment says.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use job-complete/job-abort instead of the blockjob-* variants for
blockdev.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As the error message is now available and we know whether the job failed
we can report an error straight away rather than having the user check
the event.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Set the correct job states after the operation is requested in qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When initiating a pivot or abort of a block job we need to track which
one was initiated. Currently it was done via data stashed in
virDomainDiskDef. Add possibility to track this also together with the
job itself.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Do decisions based on the configuration of the job rather than the data
stored with the disk.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the stored job name rather than passing in the disk alias when
referring to the job which allows the same code to work also when
-blockdev will be used.
Note that this API does not require the change to use 'query-job' as it
will ever only work with blockjobs bound to disks due to the arguments
which allow only referring to a disk. For the disk-less jobs we'll need
to add a separate API later.
The change to qemuMonitorGetBlockJobInfo is required as the API was
stripping the 'drive-' prefix when returning the data which is not
desired any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In cgroups v2 when a new group is created by default no controller is
enabled so the detection code will not detect any controllers.
When enabling the controllers we should also store them for the group.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
When creating new group for cgroups v2 the we cannot check
cgroups.controllers for that cgroup because the directory is created
later. In that case we should check cgroups.subtree_control of parent
group to get list of controllers enabled for child cgroups.
In order to achieve that we will prefer the parent group if it exists,
the current group will be used only for root group.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
When commit 6ac402c456 added the API whenever VIR_DOMAIN_MEM_MAXIMUM
was passed the code always checked whether the domain was active and
therefore failed with an error even though only a config change was
requested. Fix the issue by replacing virDomainObjGetOneDef with
virDomainObjGetOneDefState which tells us what definition we're
performing the change on.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Commit d5572f62e3 forgot to add maxthreads to the non-Linux definition
of the function, thus breaking the MinGW build.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Any message that is easy to trigger (as evidenced by the testsuite
update) should not use 'internal error' as its category.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
virDomainSnapshotFindByName(list, NULL) should return NULL, rather
than the internal-use-only metaroot. Most existing callers pass in a
non-NULL name; the few external callers that don't are immediately
calling virDomainMomentSetParent (which indeed needs the metaroot
rather than NULL if the parent name is NULL); but as the leaky
abstraction is ugly, it is worth instead making
virDomainMomentSetParent static and adding a new function for
resolving the parent link of a brand new moment within its list. The
existing external uses of virDomainMomentSetParent always succeed
(either the new moment has parent_name of NULL to become a new root,
or has parent_name set to a strdup of the previous current moment);
hence, our new function does not need a return value (but it still has
a VIR_WARN in case future uses break our assumptions about failure
being impossible).
Missed when commit 02c4e24d refactored things to attempt to remove
direct metaroot manipulations out of the qemu and test drivers into
internal-only details, and made more obvious when commit dc8d3dc6
factored it out into a separate file.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some VM configurations may result in a large number of threads created by
the associated qemu process which can exceed the system default limit. The
maximum number of threads allowed per process is controlled by the pids
cgroup controller and is set to 16k when creating VMs with systemd's
machined service. The maximum number of threads per process is recorded
in the pids.max file under the machine's pids controller cgroup hierarchy,
e.g.
$cgrp-mnt/pids/machine.slice/machine-qemu\\x2d1\\x2dtest.scope/pids.max
Maximum threads per process is controlled with the TasksMax property of
the systemd scope for the machine. This patch adds an option to qemu.conf
which can be used to override the maximum number of threads allowed per
qemu process. If the value of option is greater than zero, it will be set
in the TasksMax property of the machine's scope after creating the machine.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Update the current or max memory, on the persistent or live definition
depending on the flags which are currently ignored.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Make the test driver only support the VIR_TYPED_PARAM_STRING flag for
now.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Avoid the chance that sysconf(_SC_OPEN_MAX) returns -1 and thus
would cause virBitmapNew would attempt to allocate a very large
bitmap.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's already dereffed in the initialization and shouldn't be NULL
unless virJSONValueArraySize after a virJSONValueObjectGetArray
could return a NULL data entry.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Report in logs when we don't find existing block job data and create it
just to handle the job.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While this function does start a block job in case when we'd not be able
to get our internal data for it, the handler sets the job state to
QEMU_BLOCKJOB_STATE_RUNNING anyways, thus qemuBlockJobStartupFinalize
would just unref the job.
Since the other usage of qemuBlockJobStartupFinalize in the other part
of the event handler was a bug replace this one anyways even if it would
not cause problems.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The block job event handler qemuProcessHandleBlockJob looks at the block
job data to see whether the job requires synchronous handling. Since the
block job event may arrive before we continue the job handling (if the
job has no data to copy) we could hit the state when the job is still
set as QEMU_BLOCKJOB_STATE_NEW (as we move it to the
QEMU_BLOCKJOB_STATE_RUNNING state only after returning from monitor).
If the event handler uses qemuBlockJobStartupFinalize it would
unregister and free the job. Thankfully this is not a big problem for
legacy blockjobs as we don't need much data for them but since we'd
re-instantiate the job data structure we'd report wrong job type for
active commit as qemu reports it as a regular commit job.
Fix it by not using qemuBlockJobStartupFinalize function in
qemuProcessHandleBlockJob as it is not starting the job anyways.
https://bugzilla.redhat.com/show_bug.cgi?id=1721375
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virCgroupRemove return -1 when removing cgroup failed.
But there are retry code to remove cgroup in QemuProcessStop:
retry:
if ((ret = qemuRemoveCgroup(vm)) < 0) {
if (ret == -EBUSY && (retries++ < 5)) {
usleep(200*1000);
goto retry;
}
VIR_WARN("Failed to remove cgroup for %s",
vm->def->name);
}
The return value of qemuRemoveCgroup will never be equal to "-EBUSY",
so change the return value of virCgroupRemove if failed.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Shutting down the daemon after 30 seconds of being idle is a little bit
too aggressive. Especially when using 'virsh' in single-shot mode, as
opposed to interactive shell mode, it would not be unusual to have
more than 30 seconds between commands. This will lead to the daemon
shutting down and starting up between a series of commands.
Increasing the shutdown timer to 2 minutes will make it less likely that
the daemon will shutdown while the user is in the middle of a series of
commands.
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Instead of having each caller pass in the desired logfile name, pass in
the binary name instead. The logging code can then just derive a logfile
name by appending ".log".
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This adds detection of a Quobyte as a shared file system for live
migration.
Signed-off-by: Silvan Kaiser <silvan@quobyte.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We have two functions: virPCIDeviceAddressIsEqual() defined only
on Linux and virPCIDeviceAddressEqual() defined everywhere. And
both of them do the same. Drop the former in favour of the
latter.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit 5ff46aaa7f added a new parameter but neglected to fix the NONNULL
declarations.
Reported-by: Julio Faracco <jcfaracco@gmail.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
When removing the disk fronted while any block job is still active we
need to transfer the ownership of the backing chain to the job itself as
the job still holds the reference to the chain members and thus attempts
to remove them would fail.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In cases when the disk frontend was unplugged while a blockjob was
running the blockjob inherits the backing chain. When the blockjob is
then terminated we need to unplug the chain as it will not be used any
more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The PR manager is a property of the format layer in qemu so we need to
be able to track it also in the chains of orphaned block jobs.
Add a helper for qemu to look also into the blockjob state.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When the guest unplugs the disk frontend libvirt is responsible for
deleting the backend. Since a blockjob may still have a reference to the
backing chain when it is running we'll have to store the metadata for
the unplugged disk for future reference.
This patch adds 'chain' and 'mirrorChain' fields to 'qemuBlockJobData'
to keep them around with the job along with status XML machinery and
tests. Later patches will then add code to change the ownership of the
chain when unplugging the disk backend.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refresh the state of the jobs and process any events that might have
happened while libvirt was not running.
The job state processing requires some care to figure out if a job
needs to be bumped.
For any invalid job try doing our best to cancel it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add the infrastructure to handle block job events in the -blockdev era.
Some complexity is required as qemu does not bother to notify whether
the job was concluded successfully or failed. Thus it's necessary to
re-query the monitor.
To minimize the possibility of stuck jobs save the state into the XML
prior to handling everything so that the reconnect code can potentially
continue with the cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add support for handling the event either synchronously or
asynchronously using the event thread.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With blockdev we'll need to use the JOB_STATUS_CHANGE so gate the old
events by the blockdev capability.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This new state is entered when qemu finished the job but libvirt does
not know whether it was successful or not.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the blockjob handling code deals with the status XML we don't
need to save it explicitly when starting blockjobs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that block job data is stored in the status XML portion we need to
make sure that everything which changes the state also saves the status
XML. The job registering function is used while parsing the status XML
so in that case we need to skip the XML saving.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We need to store the block job state in the status XML so that we can
properly recover any data when reconnecting after startup and also in
the end to be able to do any transition of the backing chain that
happened while libvirt was not connected to the monitor.
First step is to note the name, type, state and corresponding disk into
the status XML.
We also need to make sure that a broken blockjob does not make libvirt
lose the VM, thus many of the errors just mark the job as invalid.
Later on we'll cancel all invalid jobs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The job data saved in the XML may be partially invalid e.g. if something
is missing. To prevent losing a domain with such a job add a flag to the
job data so that job APIs can ignore such a job and we can just cancel
it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When parsing the status XML we need to register all existing jobs.
Export the functions so that they are usable in other modules.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Later on we'll format these values into the status XML so the from/to
string functions will come handy. The implementation also notes that
these will be used in the status XML to avoid somebody changing the
values.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add the job structure to the table when instantiating a new job and
remove it when it terminates/fails.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Block jobs currently belong to disks only so we can look up the block
job data for them in the corresponding disks. This won't be the case
when using blockdev as certain jobs don't even correspond to a disk and
most of them can run on a part of the backing chain.
Add a global table of blockjobs which can be used to look up the data
for the blockjobs when the job events need to be processed.
The table is a hash table organized by job name and has a reference to
the job. New and running jobs will later be added to this table.
Reference counting will allow to reap job state for synchronous callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The legacy job handler does not look at the old job state so we can
update it earlier.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There's no need to do it if the job is not completed. The new helper
allows to do this with much less hassle in the correct place.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rename and move qemuBlockJobTerminate to qemuBlockJobUnregister and
separate bits from qemuBlockJobDiskNew which register the job with the
disk. This creates an unified interface for other APIs to use.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to qemuDomainSaveStatus add a helper to save the config XML
named qemuDomainSaveConfig.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rename qemuDomainObjSaveJob and create a wrapper for it which does not
require 'driver' to be passed and export it so that other palces can
easily save the status XML without having to invoke virDomainSaveStatus
which has unpleasing parameters.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tests will need to parse such a definition so it also needs to be freed.
Provide a function for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU allows us to create storage on certain network protocols which
allow image creation through their API. Wire up the generator for using
it with libvirt as well as for local files.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'blockdev-add' allows us to use qemu to format images to our desired
format. This patch implements helpers which convert a
virStorageSourcePtr into JSON objects describing the required
configuration.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To allow using -blockdev with blockjobs QEMU needs to reopen files in
read-write mode when modifying the backing chain. To achieve this we
need to use 'auto-read-only' for the backing files rather than the
normal 'read-only' property. That way qemu knows that the files need to
be reopened.
Note that the format drivers (e.g. qcow2) are still opened with the
read-only property enabled when being a member of the backing chain
since they are supposed to be immutable unless a block job is started.
QEMU v4.0 (since commit 23dece19da4) allows also dynamic behaviour for
auto-read-only which allows us to use sVirt as we only grant write
permissions to files when doing a blockjob.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To allow reusing the formatters in the code for creating JSON properties
for 'blockdev-create' we need to create everything except the 'driver'
attribute.
Use the new helper virJSONValueObjectPrependString to put the driver at
the same place so that we don't change any output.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Libvirt treats the JSON objects as lists thus the values appear in the
order they were added. To avoid too much changes introduce a helper
which allows to prepend a string which will allow to keep certain
outputs in order.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When formatting new qcow2 images we need to provide the backing store
string which should not contain any authentication or irrelevant data.
Add a flag for qemuBlockStorageSourceGetBackendProps which allows to
skip the irrelevant data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'blockdev-create' starts a job which creates a storage volume using
the given protocol or formats an existing (added) volume with one of the
supported storage formats.
This patch adds the monitor interaction bits.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This new event is a superset of the BLOCK_JOB* events and also covers
jobs which don't bind to a VM disk.
In this patch the monitor part is implemented.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This belongs to the new job management API which can manage also
non-block based jobs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This belongs to the new job management API which can manage also
non-block based jobs. Since we'll need to be able to attempt to cancel
jobs which potentially were not started (during reconnect) the 'quiet'
flag allows to suppress errors reported.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This belongs to the new job management API for generic jobs.
The dismiss command is meant to remove a concluded job after we were
able to get the final status.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow using the delayed dismiss of the job so that we can reap the state
even if libvirtd was not running when qemu emitted the job completion
event.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow using the node name to specify the base and top of the 'commit'
operation, allow specifying explicit job name and add support for
delayed dismiss of the job so that we can reap the state even if
libvirtd was not running when qemu emitted the job completion event.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow using the node name to specify the base of the 'stream' operation,
allow specifying explicit job name and add support for delayed dismiss
of the job so that we can reap the state even if libvirtd was not
running when qemu emitted the job completion event.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When querying storage metadata after a block job we re-run
virStorageFileGetMetadata on the top level storage file. This means that
the workers (virStorageFileGetMetadataInternal) must not overwrite any
pointers without freeing them.
This was not considered for src->compat and src->features. Fix it and
add a comment mentioning that.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The function does not do any cleanup, so replace the 'cleanup' label
with return of -1 and the 'done' label with return of 0.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since fb9f6ce625 we are including a libxml header file in the
network driver but never link with it. This hasn't caused an
immediate problem because in the end the network driver links
with libvirt.la. But apparently, it's causing a build issue on
old Ubuntu.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If there are two paths on the list that are the same we need to
lock it only once. Because when we try to lock it the second time
then open() fails. And if it didn't, locking it the second time
would fail for sure. After all, it is sufficient to lock all
paths just once satisfy the caller.
Reported-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Document why we need to sort paths while it's still fresh in my
memory.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is similar with 596aa144. It fixes an uninitialized
variable to avoid garbage value. This case, it uses time 't' 0 if
an error occurs with virTimeMillisNowRaw.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Pass an xmlopt argument through all the needed network conf
functions, like is done for domain XML handling. No functional
change for now
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Just a stub for now that is unused. Add init+cleanup plumbing and
demostrate it in bridge_driver.c
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Having a translation enum full of empty strings seems excessive.
Now that the validiation is performed in qemuDomainDeviceDefValidateFS,
remove it completely and open-code the two allowed cases.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Introduce two separate variables instead of reusing the same one
for clarity.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
This function iterates over all filesystems, not just -fsdevs.
Rename it to free the name for a function that actually builds fsdevs.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
When spawning a child process, between fork() and exec() we close
all file descriptors and keep only those the caller wants us to
pass onto the child. The problem is how we do that. Currently, we
get the limit of opened files and then iterate through each one
of them and either close() it or make it survive exec(). This
approach is suboptimal (although, not that much in default
configurations where the limit is pretty low - 1024). We have
/proc where we can learn what FDs we hold open and thus we can
selectively close only those.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
I will optimize this code a bit in the next commit. But for that
it is better if the code lives in a separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Test if our parsing of interface stats as returned by ovs-vsctl
works as expected. To achieve this without having to mock
virCommand* I'm separating parsing of stats into a separate
function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We run 'ovs-vsctl' nine times (first to find if interface is
there and then eight times = for each stats member separately).
This is very inefficient. I've found a way to run it once and
with a bit of help from virJSON module we can parse out stats
we need.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Typo meant we use 'nodedev' instead of 'interface'. This doesn't hurt
libvirtd because if a process tries to acquire a lock it already holds
it will succeed. It fails when nodedev & interface drivers are in
separate daemons though.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When the drivers acquire their pidfile lock we don't want to wait if the
lock is already held. We need the driver to immediately report error,
causing the daemon to exit.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
VHD images can be used as any other, so we should add them to the list
of types that virt-aa-helper can read when creating the per-guest rules
for backing files.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
When validating a domain among all the checks there are two that
concern VIR_DOMAIN_LOADER_TYPE_PFLASH specifically. The first
check ensures that on x86 ACPI is enabled when UEFI is requested,
the second ensures that UEFI is used when ACPI is requested on
aarch64. However, check for UEFI is done by plain comparison of
def->os.loader->type which is insufficient because we have
def->os.firmware too.
NB, this wouldn't be a problem for active domain, because on
startup process def->os.loader->type gets filled by
qemuFirmwareEnableFeatures(), but that's not the case for
inactive domains.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1729604
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Split up the addition of a storage source into the following sub-steps:
1) storage access dependencies (TLS transport, persistent reservation)
2) storage acccess node (file/gluster/nbd...)
3) format driver dependencies (encryption secret)
4) format driver node (qcow2, raw, ...)
The functions split out will be later reused when implementing support
for 'blockdev-create' as we'll need the dependencies plugged in first,
then blockdev-create will be called and after that successfully finishes
blockdev-add will be added.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add separate booleans for extracting VIR_DOMAIN_BLOCK_COPY_REUSE_EXT and
VIR_DOMAIN_BLOCK_COPY_SHALLOW from '@flags' and also change 'reuse' into
'existing'.
qemuMonitorDriveMirror requires the unmodified state of the flags to
pass to qemu and also we use the value a few times internally. Extract
it separately now.
The 'reuse' flag did not indicate reusing of the file as much as the
fact that the storage is existing and thus should not be created, so
modify the name to reflect this.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With -blockdev it will be possible that a block job loses the disk that
was used to start it to a guest-initiated hot-unplug. Don't emit the
block job events in that case as we can't report the top level source or
disk target for an unplugged (and potentially replugged with different
source) disk.
Eventually when we add machinery for tracking jobs globally for a VM the
event will be reinstated via the domain job event.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
job->newstate is now used internally all the time so there's no need to
clear it as it already has correct value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Update schema and configuration to allow specifying new video type of
'bochs'. Add implementation and tests for qemu.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Check whether qemu supports the bochs-display device and set a
capability. Update tests.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Add pool list type flag VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI_DIRECT,
which was forgotten when introducing iscsi-direct pool at f0bf1be3.
https://bugzilla.redhat.com/show_bug.cgi?id=1726609
Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The code to check whether a redefined snapshot/checkpoint XML is
attempting to create a cycle in the list of moments is lengthy, and
common between the two types of list. Therefore, it belongs in the
shared base file.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The use of the virNetServerAutoShutdownFunc typedef was removed in
commit 79b8a56995
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Oct 31 19:03:55 2012 +0000
Replace polling for active VMs with signalling by drivers
This unused typedef was then copied into the virNetDaemon object
when that was split off from virNetServer, resulting in a typedef
virNetDaemonAutoShutdownFunc that has never been needed.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The new systemd activation APIs mean there is no longer a need to get
the UNIX socket path associated with a plain FD.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virGetListenFDs method no longer needs to be called directly, so it
can be a static function internal to the systemd code.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Using the new system activation APIs allows for simpler code setting up
the network services.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Using the new system activation APIs allows for simpler code setting up
the network services.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The only use of this code was removed by:
commit be78814ae0
Author: Michal Privoznik <mprivozn@redhat.com>
Date: Thu Apr 2 14:41:17 2015 +0200
virNetSocketNewConnectUNIX: Use flocks when spawning a daemon
less than a year after it was first introduced in
commit 1b807f92db
Author: Martin Kletzander <mkletzan@redhat.com>
Date: Wed Jul 16 08:00:19 2014 +0200
rpc: pass listen FD to the daemon being started
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Certain libvirtd.conf settings are not honoured when using systemd
socket activation.
Certain systemd unit file settings must match those defined in
libvirtd.conf for systemd socket activation to work with systemd
version < 227, otherwise libvirtd cannot determine which inherited
FD to use for which service.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Since we have socket activation available now, we can let the system
libvirtd exit when it is idle. This allows it to still do autostart
when the host boots up, but when nothing was started it will quickly
exit again until some mgmt app connects to the socket.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We don't do socket activation of libvirtd, since we need to
unconditionally start libvirtd in order to perform autostart. This
doesn't mean we can't have systemd socket units. Some use cases will
not need libvirt's autostart & are thus free to use activation.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virNetServerServiceNewFDOrUNIX method cannot be correctly used when
dealing with systemd activation of a service which can receive more than
one socket FD as there is not guaranteed ordering of FDs.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The current libvirtd code for systemd socket activation assumes socket
FDs are passed in the order unix-rw, unix-ro, unix-admin. There is in
fact no ordering guarantee made by systemd. Applications are expected
to check the address or name associated with each FD to figure out its
identity.
This rewrites libvirtd to make use of the new systemd activation APIs
to make it robust wrt socket ordering changes.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently code has to first create the service and then separately
register it with the server. If the socket associated with a particular
service is not passed from systemd we want to skip creating the service
altogether. This means we can't put the systemd activation logic into
the constructors for virNetServerService.
This patch thus creates some helper methods against virNetServer which
combine systemd activation, service creation and service registration
into one single operation. This operation is automatically a no-op if
systemd activation is present and no sockets were passed in.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently the socket code will unlink any UNIX socket path which is
associated with a server socket. This is not fine grained enough, as we
need to avoid unlinking server sockets we were passed by systemd.
To deal with this we must explicitly track whether each socket needs to
be unlinked when closed, separately of the client vs server state.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virNetServerServiceNewFD API only accepts a single FD, but it is
easily changed to allow for an array of FDs to be passed in.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce a virNetServerServiceNewSocket API that allows the various
constructors to share more code.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When receiving multiple FDs from systemd during service activation it is
neccessary to identify which purpose each FD is used for. While this
could be inferred by looking for the specific IP ports or UNIX socket
paths, this requires the systemd config to always match what is expected
by the code. Using systemd FD names we can remove this restriction and
simply identify FDs based on an arbitrary name.
The FD names are passed by systemd in the LISTEN_FDNAMES env variable
which is populated with the socket unit file names, unless overriden
by using the FileDescriptorName setting.
This is supported since the system 227 release and unfortunately RHEL7
lacks this version. Thus the code has some back compat support whereby
we look at the TCP ports or the UNIX socket paths to identify what
socket maps to which name. This back compat code is written such that
is it easly deleted when we are able to mandate newer systemd.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When the service passed to getaddrinfo is NULL the kernel will choose a
free port to bind to. In a dual stack though we will get separate
sockets for IPv4 and IPv6 and we need them to bind to the same port
number. Thus once the kerel has auto-selected a port for the first
socket, we must disable auto-select for subsequent IP sockets and force
reuse of the first port.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 035db37394
Even though we only allow using RBD with raw volumes,
removing the options and the default format causes our
parser not to fill out the volume format and the backend code
rejects creating a non-raw volume.
Re-introduce the volume options to fix volume creation while
erroring out on requests to use non-raw formats.
https://bugzilla.redhat.com/show_bug.cgi?id=1724065
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
If there are more than 16 images, the memory allocated in images
might be leaked on subsequent execution(s).
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In preparation for adding the bochs display device, refactor the logic
so that each branch handles a single device type and checks its
parameters within that branch. In this case VGA and VMVGA are still
grouped into the same branch since they share device-specific parameter
names.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The cleanup label in virNetworkObjDeletePort() function serves no
purpose. Drop it and thus simplify the function a bit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The cleanup label in virNetworkObjAddPort() function serves no
purpose. Drop it and thus simplify the function a bit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The virNetworkObjGetPortStatusDir() function allocates a memory
to construct a path. None of the callers free it leading to a
memleak.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The virtlogd config is set to rollover logs every 2 MB.
Normally a logrotate config file is also installed to handle cases where
virtlogd is disabled. This is set to rollover weekly with no size
constraint.
As a result logrotate can interfere with virtlogd's, rolling over files
that virtlogd has already taken care of.
This changes logrotate configs to rollover based on a max size
constraint of 2 MB + 1 byte. When virtlogd is running the log files will
never get this large, making logrotate a no-op.
If the user changes the size in virtlogd's config to something larger,
they are responsible for also changing the logrotate config suitably.
The LXC/libxl drivers don't use virtlogd, but there logrotate config is
altered to match the QEMU driver config, for the sake of consistency.
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Way back in the past, the "no_tty=1" option was added for the remote
driver to disable local password prompting by disabling use of the local
tty:
commit b32f429849
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Fri Sep 21 20:17:09 2007 +0000
Added a no_tty param to remote URIs to stop SSH prompting for password
This was done by adding "-T -o BatchMode=yes -e none" args to ssh. This
achieved the desired results but is none the less semantically flawed
because it is mixing up config parameters for the local tty vs the
remote tty.
The "-T" arg stops allocation of a TTY on the remote host. This is good
for all libvirt SSH tunnels as we never require a TTY for our usage
model, so we should have just passed this unconditionally.
The "-e none" option disables the escape character for sessions with a
TTY. If we pass "-T" this is not required, but it also not harmful to
add it, so we should just pass it unconditionally too.
Only the "-o BatchMode=yes" option is related to disabling local
password prompts and thus needs control via the no_tty URI param.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
For quite some time now it is impossible to connect to a domain
using a HMP monitor, so there is no point in formatting it in the status
XML.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The getservent() APIs are not re-entrant safe so cannot be used in any
threaded program. Add a wrapper around getaddrinfo() for resolving the
service names to a port number.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
It doesn't make sense to have the admin socket active if the main
socket is not running, so bind their lifecycle together.
This ensures that if primary socket is stopped, the corresponding
admin socket is also stopped.
In the reverse, starting the admin socket will also automatically
start the primary socket.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/bhyve/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/bhyve/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/vz/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/vz/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/lxc/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/lxc/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/libxl/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/libxl/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
No supported build targets for libvirt still ship xend, so there is no
need for the libxl driver to check for it anymore.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/nwfilter/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/nwfilter/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/interface/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/interface/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/nodedev/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/nodedev/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/storage/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/storage/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/network/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/network/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/secrets/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/secrets/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When we allow multiple instances of the driver for the same user
account, using a separate root directory, we need to ensure mutual
exclusion. Use a pidfile to guarantee this.
In privileged libvirtd this ends up locking
/var/run/libvirt/qemu/driver.pid
In unprivileged libvirtd this ends up locking
/run/user/$UID/libvirt/qemu/run/driver.pid
NB, the latter can vary depending on $XDG_RUNTIME_DIR
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We've been doing a terrible job of performing XML validation in our
various API that parse XML with a corresponding schema (we started
with domains back in commit dd69a14f, v1.2.12, but didn't catch all
domain-related APIs, didn't document the use of the flag, and didn't
cover other XML). New APIs (like checkpoints) should do the validation
unconditionally, but it doesn't hurt to continue retrofitting existing
APIs to at least allow the option.
While there are many APIs that could be improved, this patch focuses
on wiring up a new snapshot XML creation flag through all the
hypervisors that support snapshots, as well as exposing it in 'virsh
snapshot-create'. For 'virsh snapshot-create-as', we blindly set the
flag without a command-line option, since the XML we create from the
command line should generally always comply (note that validation
might cause failures where it used to succeed, such as if we tighten
the RNG to reject a name of '../\n'); but blindly passing the flag
means we also have to add in fallback code to disable validation if
the server is too old to understand the flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Similar to VIR_DOMAIN_DEF_PARSE_VALIDATE_SCHEMA; the next patch will
put it to use with a counterpart public API flag.
No need to change qemudomainsnapshotxml2xmltest to use the flag, since
the testsuite already has a separate virschematest that does the same.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
We no longer need to special-case xenUnified, since 1dac5fbbbb
dropped support for that naming scheme.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Previous commit:
commit faceedaf71
Author: Jonathon Jongsma <jjongsma@redhat.com>
Date: Tue Jun 18 11:13:12 2019 -0500
src/vz: use #pragma once in headers
accidentally chomped the "#" in a "#define" when re-indenting
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for the modern CPU_ALLOC macros was added 10 years ago in
commit a73cd93b24
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Mon Nov 16 16:08:29 2009 +0000
Alternate CPU affinity impl to cope with NR_CPUS > 1024
This is long enough that we can assume it always exists and drop the
back compat code.
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Continuous integration caught that although 'make syntax-check' was
sufficient to let me be aware that I had to change bhyve to use
s/virDomainShutdownEnsureACL/virDomainShutdownFlagsEnsureACL/, it was
not sufficient to note which ACL functions require 2 vs. 3 arguments
for flag validation.
Fixes: eded8aad
Signed-off-by: Eric Blake <eblake@redhat.com>
The @oldDef variable in libxlAddDom0() is not used really. Drop
it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Even though we don't accept any flags, it is unfriendly to callers
that use the modern API to have to fall back to the flag-free API.
Note that virDomainBlockStats does not trivially forward to
virDomainBlockStatsFlags, so that one is omitted for now.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Even though we don't accept any flags, it is unfriendly to callers
that use the modern API to have to fall back to the flag-free API.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Even though we don't accept any flags, it is unfriendly to callers
that use the modern API to have to fall back to the flag-free API.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Even though we don't accept any flags, it is unfriendly to callers
that use the modern API to have to fall back to the flag-free API.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
We've dropped old xend support over a year ago. At this point we can
also drop support for parsing very old configs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use new coding style to merge the only use of xenFormatSxprSound into
the caller.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The docs talked about an active snapshot when they meant an active
domain; they also claimed the flag was a no-op for hypervisors with no
snapshot metadata even though the flag is currently rejected as
unrecognized for hypervisors with no snapshot support at all. A later
patch may teach more drivers to ignore the flag as a no-op, but that
shouldn't conflict with the wording chosen here (since a new client
talking to an old server still runs into the same issue, even if a
newer server becomes more tolerant).
Reported-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The virConnectGetType() method has an unfortunate signature, returning a
static string that must not be freed by the caller. The remote driver,
however, gets this string dynamically over an RPC call, which raised a
design discussion on the mailing list. Eventually the problem was
resolved by having the remote driver cache the returned string
internally and free it when the connection was closed.
The link to the mailing list is thus talking about a problem that does
not actually exist in the final implementation, and at best serves to
confuse the reader into thinking there might be a memory leak.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Neither the sasl_client_init or sasl_server_init methods are even
remotely threadsafe. They do a bunch of one-time initialization and
merely use a simple integer counter to avoid repeated work, not even
using atomic increment/reads on the counter. This can easily race in a
threaded program. Protect the calls using a virOnce initializer function
which is guaranteed threadsafe at least from libvirt's POV.
If the application using libvirt also uses another library that makes
use of SASL then the race still exists. It is impossible to fix that
fully except in SASL code itself.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Similar to commit a487890d for qemu, a little bit of refactoring in
the snapshot delete code will make it easier to reuse functionality
for checkpoints.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The 'tty' variable is only used on Win32. Instead of just annotating it
with ATTRIBUTE_UNUSED, make its declaration conditional on WIN32 so that
it is clear why it is not used.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Simplify the clean code paths for doRemoteOpen by using VIR_AUTOFREE
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The doRemoteOpen method was a little unusual in declaring a bunch of
local variables in the middle of the function. Move them to the top as
it is normal libvirt style.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
There is an error path that jumps over the initialization of
nerrors, and the jump target reads the variable contents.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Zero out the user provided memory in order to avoid potentially freeing
uninitialized memory.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Mention libssh as possible transport in the error message of an
unrecognized transport.
https://bugzilla.redhat.com/show_bug.cgi?id=1727013
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The LIBVIRTD_CONFIGURATION_FILE constant was introduced in
commit b7c42619e6
Author: Richard W.M. Jones <rjones@redhat.com>
Date: Mon Jun 11 11:43:41 2007 +0000
Mon Jun 11 12:41:00 BST 2007 Richard W.M. Jones <rjones@redhat.com>
and then never used !
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The LIBVIRTD_CONFIG and LIBVIRTD_NOFILES_LIMIT parameters were only
honoured when using the sysvinit scripts. This was removed already in
commit 912fe2df9d
Author: Andrea Bolognani <abologna@redhat.com>
Date: Fri Mar 15 16:47:27 2019 +0100
Drop support for "Red Hat" init scripts
so the parameters can safely be dropped.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The sysvinit script was previously removed in
commit 912fe2df9d
Author: Andrea Bolognani <abologna@redhat.com>
Date: Fri Mar 15 16:47:27 2019 +0100
Drop support for "Red Hat" init scripts
A make rule was accidentally left behind.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently the flags argument is completely ignored, but it should be
checked for any unsupported flags that might have been passed.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Always return / and /boot as the mount points imitating the default
Fedora installation. Use the first disk found, otherwise if no disk
device of type VIR_DOMAIN_DISK_DEVICE_DISK is present, return 0 mount
points.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Calling virDomainObjUpdateModificationImpact directly inside the
function body is redundant, since the same function call is embedded
into virDomainObjGetOneDef.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
There are some paths (e.g. /dev/vfio/vfio or /dev/mapper/control)
which are defined in qemu_domain.c and then in qemu_cgroup.c
again. This is suboptimal. Let's move paths into qemu_domain.h and
drop duplicate definitions.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
In my review of 89320788ac I've simplified assigning disk errors
too much as the code I've changed it to will set
VIR_DOMAIN_DISK_ERROR_NONE. This is in contradiction with our
documentation which specifies that disks with no errors are not
reported.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
If something goes wrong in testDomainGetDiskErrors() then we try
to free any strings that were previously allocated in return
array. Problem is, in my review of original patch (89320788ac)
I've mistakenly did some changes which result in possible NULL
dereference (@vm is set to NULL as the first thing under cleanup
label).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This reverts commit fc3990c7e6.
Now that all the reported bugs are fixed let's turn the feature
back on.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
A simple helper function that would be used from DAC and SELinux
drivers.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The purpose of this API is to allow caller move XATTRs (or remove
them) from one file to another. This will be needed when moving
top level of disk chain (either by introducing new HEAD or
removing it).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This effectively reverts d7420430ce and adds new code.
Here is the problem: Imagine a file X that is to be shared
between two domains as a disk. Let the first domain (vm1) have
seclabel remembering turned on and the other (vm2) has it turned
off. Assume that both domains will run under the same user, but
the original owner of X is different (i.e. trying to access X
without relabelling leads to EPERM).
Let's start vm1 first. This will cause X to be relabelled and to
gain new attributes:
trusted.libvirt.security.ref_dac="1"
trusted.libvirt.security.dac="$originalOwner"
When vm2 is started, X will again be relabelled, but since the
new label is the same as X already has (because of vm1) nothing
changes and vm1 and vm2 can access X just fine. Note that no
XATTR is changed (especially the refcounter keeps its value of 1)
because the vm2 domain has the feature turned off.
Now, vm1 is shut off and vm2 continues running. In seclabel
restore process we would get to X and since its refcounter is 1
we would restore the $originalOwner on it. But this is unsafe to
do because vm2 is still using X (remember the assumption that
$originalOwner and vm2's seclabel are distinct?).
The problem is that refcounter stored in XATTRs doesn't reflect
the actual times a resource is in use. Since I don't see any easy
way around it let's just not store original owner on shared
resources. Shared resource in world of domain disks is:
- whole backing chain but the top layer,
- read only disk (we don't require CDROM to be explicitly
marked as shareable),
- disk marked as shareable.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Just like previous commit allowed to enable or disable owner
remembering for each individual path, do the same for SELinux
driver. This is going to be needed in the next commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
One caller in particular (virSecurityDACSetImageLabelInternal)
will want to have the feature turned on only in some cases.
Introduce @remember member to _virSecurityDACChownItem to track
whether caller wants to do owner remembering or not.
The actual remembering is then enabled if both caller wanted it
and the feature is turned on in the config file.
Technically, we could skip over paths that don't have remember
enabled when creating a list of paths to lock. We won't touch
their XATTRs after all. Well, I rather play it safe and keep them
on the locking list for now.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Both DAC and SELinux drivers support transactions. Each item on
the transaction list consists of various variables and @restore
is one of them. Document it so that as the list of variables grow
it's easier to spot which variable does what.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The way that virSecurityDACRecallLabel is currently written is
that if XATTRs are not supported for given path to the caller
this is not different than if the path is still in use. The value
of 1 is returned which makes secdrivers skip label restore.
This is clearly a bug as we are not restoring labels on say NFS
even though previously we were.
Strictly speaking, changes to virSecurityDACRememberLabel are not
needed, but they are done anyway so that getter and setter behave
in the same fashion.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It's better to have the function report errors, because none of
the callers does.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It's better to have the function report errors, because none of
the callers does.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The way that security drivers use XATTR is kind of verbose. If
error reporting was left for caller then the caller would end up
even more verbose.
There are two places where we do not want to report error if
virFileGetXAttr fails. Therefore virFileGetXAttrQuiet is
introduced as an alternative that doesn't report errors.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Just like it's DAC counterpart is doing,
virSecuritySELinuxRestoreAllLabel() could print @migrated in the
debug message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This test is beautiful. It checks if we haven't messed up
refcounting on security labels (well, XATTRs where the original
owner is stored). It does this by setting up tracking of XATTR
setting/removing into a hash table, then calling
qemuSecuritySetAllLabel() followed by immediate
qemuSecurityRestoreAllLabel() at which point, the hash table must
be empty. The test so beautifully written that no matter
what you do it won't fail. The reason is that all seclabel work
is done in a child process. Therefore, the hash table in the
parent is never changed and thus always empty.
There are two reasons for forking (only one of them makes sense
here though):
1) namespaces - when chown()-ing a file we have to fork() and
make the child enter desired namespace,
2) locking - because of exclusive access to XATTRs we lock the
files we chown() and this is done in a fork (see 207860927a for
more info).
While we want to fork in real world, we don't want that in a test
suite. Override virProcessRunInFork() then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 5a148ce84 altered the virNetServerNew to remove a parameter
but neglected to update the ATTRIBUTE_NONNULL's which causes a build
failure for when checking is enabled such as when lv_cv_static_analysis
is enabled.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Because of a systemd delegation policy [1] we should not write to any
cgroups files owned by systemd which in case of cgroups v2 includes
'cgroups.subtree_control'.
systemd will enable controllers automatically for us to have them
available for VM cgroups.
[1] <https://github.com/systemd/systemd/blob/master/docs/CGROUP_DELEGATION.md>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit 7bca1c9bdc.
As it turns out it's not a good idea on systemd hosts. The root
cgroup can have all controllers enabled but they don't have to be
enabled for sub-cgroups.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit 226094fbc4.
A deprecation is a warning to something that use of a feature is
being discouraged. By definition it is not an error condition to
continue to use a deprecated feature.
A VIR_ERR_DEPRECATED constant thus makes no conceptual sense. For
features which are entirely absent we already document that the
VIR_ERR_NO_SUPPORT code will be used. There is no need to distinguish
between a feature which never existed and a feature which previously
existed and was since removed.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The public API entry points will report VIR_ERR_NO_SUPPORT to the
caller when a driver does not provide an implementation of a particular
method.
When deleting methods, leaving the driver API entry point explicitly
set to NULL with an version range comment, allows the hvsupport.html
page to document when the AP was removed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Since c257352797 a reference of 'cfg' would be leaked if the function
does not need to process anything. Fix it by using VIR_AUTOUNREF.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
when a disk without PR perform attach or detach operation,
need not call qemuHotplugRemoveManagedPR, otherwise, it will
print err log about PR, let us fix it.
Signed-off-by: Jie Wang <wangjie88@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The sys/sysctl.h header is only needed on BSD platforms to get
the sysctlbyname() function declaration. On Linux we talk to
procfs instead to change sysctls.
Unfortunately a legacy sys/sysctl.h header does exist on Linux
and including it has recently started triggering a deprecation
warning from glibc.
Protect its inclusion with a HAVE_SYSCTLBYNAME check instead
so that it only gets used on platforms where we need that
function declaration.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When detecting available controllers on host we can be limited by list
of controllers from qemu.conf file.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Currently CPU controller cannot be enabled if there is any real-time
task running and is assigned to non-root cgroup which is the case on
several distributions with graphical environment.
Instead of erroring out treat it as the controller is not available.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
In order to skip controllers that we are not able to activate we need
to return different return value so the caller can decide what to do.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
It might happen that we are not able to enable CPU controller so we
can enable it for thread sub-cgroups only if it's available in parent
cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The assumption that CPU controller would be always enabled is wrong, we
should use any available controller to create a new sub-cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This affects only cgroups v2 where enabled controllers are not based on
available mount points but on the list provided in cgroup.controllers
file. However, moving it will fill in placement as well, so it needs
to be freed together with mount point if we don't need that controller.
Before this patch we were assuming that all controllers available in
root cgroup where available in all other sub-cgroups which was wrong.
In order to fix it we need to move the cgroup controllers detection
after cgroup placement was prepared in order to build correct path for
cgroup.controllers file.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
In cgroups v2 we don't have to detect available controllers every single
time if we are creating a new cgroup based on parent cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Our code would skip adding the default type in this cases, but since we
know that the only reasonable option here is 'fat' we can add it while
starting the VM.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The storage volume may in fact convert into a directory when starting
the VM so that it may be actually possible to use it.
This is a regression caused by c9b27af32d as moving the check to
validation time without adjustment causes problems as the volumes are
not translated yet.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuBuildDriveSourceStr omits the disk format string when we are
emulating a 'fat' filesystem from a directory. The logic should decide
based on the 'actualType' as a disk type=pool may be converted to a
directory.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virStorageSourceGetActualType would return VIR_STORAGE_TYPE_NONE in case
when a virStorageSource of (top level) type VIR_STORAGE_TYPE_VOLUME was
not prepared to use by the vm by calling
virDomainDiskTranslateSourcePool.
Fix this issue by returning VIR_STORAGE_TYPE_VOLUME in case when the
volume was not translated yet.
Additionally also add documentation for the function describing the
quirk.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The field is set just before returning on success.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
When changing media using blockdev-add we need to remove the leftovers
if we didn't succeed plugging in the full chain or closing the tray.
Otherwise the data structures will be freed and thus the backing chain
members will never be unplugged.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As this conversion removes the last use of qemuHotplugDiskSource*
functions we can remove all of them now.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the new helpers for removing the backing chain in case when
-blockdev is used. For -drive this function has a local implementation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace the use of qemuHotplugDiskSourceAttach* helpers with
qemuBuildStorageSourceChainAttachPrepare(Blockdev|Drive).
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace the open-coded local implementation with
qemuBuildStorageSourceChainAttachPrepare(Drive|Blockdev).
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These are meant to replace the ad-hoc helpers qemuHotplugDiskSourceAttach...
and the open-coded version in qemu_command.c for use in command line
generation.
The functions for preparing for attach of chains unfortunately need to
be in qemu_command.c as they use function defined by that file and
inclusion hierarchy.
In this patch new functions are introduced and subsequent patches then
refactor individual parts to use them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We use only one copy-on-read filter per disk, so we should handle it
separately from the chain.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move it to qemu_block.c and call it qemuBlockStorageSourceDetachPrepare.
It will be reused in other parts as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We've deprecated qemuConnectDomainXMLFromNative qemuDomainQemuAttach.
Switch the error code from VIR_ERR_OPERATION_UNSUPPORTED to the new
VIR_ERR_DEPRECATED.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow a simple programatic check that a given feature is no longer
supported by introducing a separate error code for this scenario.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit a7fb2258 added sanitization of storage pool target paths,
however source dir paths were left unsanitized.
A netfs pool with:
<source>
<host name='10.20.30.40'/>
<dir path='/nfs/'/>
</source>
will not be correctly detected as mounted by
virStorageBackendFileSystemIsMounted, because it shows up in the
mount list without the trailing slash.
Sanitize the source dir as well.
https://bugzilla.redhat.com/show_bug.cgi?id=1723247
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The function modifies the context but did not care to restore it back.
If a <seclabel> was used on a disk, the <privateData> would not be
parsed.
Use VIR_XPATH_NODE_AUTORESTORE and add a test case to validate that
everything works.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add omitted comma for multiple hosts.
Fixes: cdd362e0e7
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Commit 9c9620af called x86DataAdd without checking for an error,
so add the error checking.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 56b254dcc called virCPUx86DataAdd, but returned -1 directly
without calling the virCPUx86DataFree.
Found by Coverity.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Trivial change. Adding the name of the device that has an
unknown PCI header type in that function helps when debugging
PCI code.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Commit 7bf679ae removed the @json argument from the qemuMonitorOpen
prototype; however, it did not update the ATTRIBUTE_NONNULL value
which causes a build failure for when checking is enabled such as
when lv_cv_static_analysis is enabled.
Signed-off-by: John Ferlan <jferlan@redhat.com>
In the virStorageSourceChainHasManagedPR() function we iterate
over whole backing chain trying to determine if one of the layers
has managed PR configured. But due to a typo we in fact check the
top layer only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The files for libvirt-net-rpc-server.la refernce the sasl/sasl.h
system header but never used the $(SASL_CFLAGS) variable. This
was never noticed previously because the $(AVAHI_CLFAGS) were
set and these typically pulled in the same include directory.
When mDNS/Avahi support was removed this exposed the bug which
caused FreeBSD builds to break as /usr/local/include was no
longer searched for headers.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Filter out the given capabilities and set domain taint if we've done so.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In cases when e.g. a new feature breaks upstream behaviour it's useful
to allow users to disable the new feature to verify the regression and
possibly use it as a workaround until a fix is available.
The new qemu.conf option named "capability_filters" allows to remove
qemu capabilities from the detected bitmap.
This patch introduces the configuration infrastructure to parse the
option and pass it around.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For testing purposes it's sometimes desired to be able to control the
presence of capabilities of qemu. This adds the possibility to do this
via the qemu namespace.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly how we allow adding arbitrary command line arguments and
environment variables this patch introduces the ability to control
libvirt's perception of the qemu process by tweaking the capability bits
for testing purposes.
The idea is to allow developers and users either test a new feature by
enabling it early or disabling it to see whether it introduced
regressions.
This feature is not meant for production use though, so users should
handle it with care.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will allow enabling/disabling custom hypervisor
features for debugging/testing purposes via the qemu namespace.
Add a taint flag where we will flag such a domain so it's obvious what's
happening.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Simplify the main function by splitting out how we parse the extra
passthrough environment variables.
Note that the validation function checks that the first letter must be a
character or underscore which makes the check whether the name is
redundant.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Simplify the main function by splitting out how we parse the extra
passthrough commandline arguments.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemu_conf.c deals with the configuration file. Better fit for the
structure and freeing function will be qemu_domain.c where the rest of
the namespace parsing/formatting stuff resides.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The data injected via the namespace may contain also other things than
commandline passthrough definitions. Rename it to make it more
universal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In kernel 4.12 there was introduced new BFQ scheduler and in kernel
5.0 the old CFQ scheduler was removed. This has an implication on
the cgroups file names.
If the CFQ controller is enabled we use one file:
io.weight
The new BFQ controller expose one file with different name:
io.bfq.weight
Except for different name they have different syntax.
io.weight:
default $val
major:minor $val
io.bfq.weight:
$val
The difference is that BFQ doesn't support per-device weight.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In kernel 4.12 there was introduced new BFQ scheduler and in kernel
5.0 the old CFQ scheduler was removed. This has an implication on
the cgroups file names.
If the CFQ controller is enabled we use these two files:
blkio.weight
blkio.weight_device
The new BFQ controller expose only one file with different name:
blkio.bfq.weight
The reason is that BFQ controller doesn't support per-device weight.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If we need to get a path of specific file and we need to check its
existence before we use it then we can reuse that path to get value
for specific device. This way we will not build the path again in
virCgroupGetValueForBlkDev.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If we need to get a path of specific file and we need to check its
existence before we use it then we can reuse that path to get/set
values instead of calling the existing get/set value functions which
would be building the path again.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We currently refuse to connect to remote libvirtd over SSH if we see the
path ends in /session. Earlier on though we checked for /session and set
the VIR_DRV_OPEN_REMOTE_USER flag. There is one subtle distinction
though with the test driver. All test URIs are marked with this flag,
regardless of whether the URI indicates a local or remote connection.
Previously a local connection to the test driver would have used the
unprivileged libvirtd while a remote connection would have tried the
privileged libvirtd. With this we are consistent and use the
unprivileged for both local & remote, if the current user is non-root.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently the VIR_DRV_OPEN_REMOTE_USER flag is only set when we identify
that we're connecting to a local libvirtd daemon. We would like to be
able to set that even if connecting to a remote libvirtd daemon. This
entails refactoring the conditional check.
One subtle change is that the VIR_DRV_OPEN_REMOTE_USER is now set when
the test+XXX:// URI is used, even if a servername is present. This has
no effect in this patch, but will later.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Libvirtd has long had integration with avahi for advertising libvirtd
using mDNS when TCP/TLS listening is enabled. For a long time the
virt-manager application had support for auto-detecting libvirtds
on the local network using mDNS, but this was removed last year
commit fc8f8d5d7e3ba80a0771df19cf20e84a05ed2422
Author: Cole Robinson <crobinso@redhat.com>
Date: Sat Oct 6 20:55:31 2018 -0400
connect: Drop avahi support
Libvirtd can advertise itself over avahi. The feature is disabled by
default though and in practice I hear of no one actually using it
and frankly I don't think it's all that useful
The 'Open Connection' wizard has a disproportionate amount of code
devoted to this feature, but I don't think it's useful or worth
maintaining, so let's drop it
I've never heard of any other applications having support for using
mDNS to detect libvirtd instances. Though it is theoretically possible
something exists out there, it is clearly going to be a niche use case
in the virt ecosystem as a whole.
By removing avahi integration we can cut down the dependency chain for
the basic libvirtd install and reduce our code maint burden.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The unprivileged libvirtd daemon switched to use the XDG dir layout in
the 0.9.13 release, and included code for moving config files from the
old location. The chances of someone upgrading libvirt from <= 0.9.12
directly to libvirt >= 5.5.0 is close enough to zero that we can
reasonably drop the back compat code.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In libssh 0.9.0 functions ssh_is_server_known and ssh_write_knownhost
are marked as deprecated.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1722735
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
testDomainInterfaceAddresses always returns the same hard-coded
addresses. Change the behavior such as if there is a DHCP range defined,
addresses are returned from that pool.
The specific address returned depends on both the domain id and the
specific guest interface in an attempt to return unique addresses *most
of the time*.
Additionally, properly handle IPv6 networks which were previously
ignored completely.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When connecting to virtlogd fails e.g. due to wrong libvirtd selinux
process label we'd report an utterly useless error message:
$ virsh start upstream
error: Failed to start domain upstream
error: Cannot recv data: Connection reset by peer
Use virLastErrorPrefixMessage in the correct place to give a better
sense of what's going on:
$ virsh start upstream
error: Failed to start domain upstream
error: can't connect to virtlogd: Cannot recv data: Connection reset by peer
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
In some cases we report a low level error message which does not have
enough information to see what the problem is. To allow improving on
this add an API which will prefix the error message with another error
message string which can be used to describe where the error comes from.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Commit f34397e51c introduced a crash-inducing problem when collecting
disk snapshot data, where the array would be filled starting from the
second element.
The code then dereferenced the first one.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The "cpu-add" command is supported in all supported qemu versions and
cpu unplug did not work at all until the new cpu unplug approach (using
device_add/del) was implemented.
Remove the support for falling back to the text monitor.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The docstring of virNetworkGetDHCPLeases is not correctly formatted and
as a result the example code snippet appears as normal text under the
"Returns:" section. This patch fixes the problem.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
With QEMU versions which lack "unavailable-features" we use CPUID based
detection of features which were enabled or disabled once QEMU starts.
Thus using MSR features with host-model would result in all of them
being marked as disabled in the active domain definition even though
QEMU did not actually disable them.
Let's make sure we add MSR features to host-model only when
"unavailable-features" property is supported by QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Without "unavailable-features" CPU property we cannot properly detect
whether a specific MSR feature we asked for (either explicitly or
implicitly via a CPU model) was disabled by QEMU for some reason.
Because this could break migration, snapshots, and save/restore
operaions, it's better to just forbid any use of MSR features with QEMU
which lacks "unavailable-features" CPU property.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is used by the host capabilities code to construct host CPU
definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This functions may be used as a virCPUDefFeatureFilter callbacks for
virCPUDefCheckFeatures, virCPUDefFilerFeatures, and similar functions to
select (virCPUx86FeatureFilterSelectMSR) or drop
(virCPUx86FeatureFilterDropMSR) features reported via MSR.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Until now, this was a macro usable for direct initialization when a
variable is defined. Turning the macro into a function makes it more
general.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This API can be used to check whether a CPU definition contains features
matching a given filter.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These APIs can be used to execute arbitrary emulators.
Forbid them on read-only connections.
Fixes: CVE-2019-10168
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This API can be used to execute arbitrary emulators.
Forbid it on read-only connections.
Fixes: CVE-2019-10167
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The virDomainManagedSaveDefineXML can be used to alter the domain's
config used for managedsave or even execute arbitrary emulator binaries.
Forbid it on read-only connections.
Fixes: CVE-2019-10166
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The virDomainSaveImageGetXMLDesc API is taking a path parameter,
which can point to any path on the system. This file will then be
read and parsed by libvirtd running with root privileges.
Forbid it on read-only connections.
Fixes: CVE-2019-10161
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Use 'rc' to temporarily store the subfunction return values,
instead of ret.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
In preparation to removing the json field from qemuMonitor,
stop checking for it in QEMU_CHECK_MONITOR.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Always assume JSON monitor was requested, since all the callers
pass true anyway.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Now that we no longer support the HMP monitor, remove some dead code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
No reason not to be consistent with the user-visible value.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Using 8 hex digits all the time, regardless of whether the
actual value can fit in fewer, makes it more obvious to the
user what the limits are.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
According to sPAPR, addresses are 32-bit rather than 64-bit.
Update qemuDomainDeviceDefValidateAddress() accordingly.
https://bugzilla.redhat.com/show_bug.cgi?id=1598657
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce a switch() statement and prepare for validating
more address types than just PCI.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that the virDomainQemuAttach API returns an error, we can remove the
unused qemuProcessAttach function as well, deleting the only user
that possibly could have requested to open a non-JSON monitor.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The only user is now in qemu_monitor_json.c to re-parse the command line
format into keyvalue pairs for use in QMP command construction.
Move and rename the functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
qemu_domain.c is now the only place that uses it, so we can move it from
qemu_parse_command.h
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
It's now unused and utterly obsolete.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This code is really neglected and does not at all work reliably. It
can't even be used for converting our own commandline back.
Since this was mostly useful for aiding migration from manually run qemu
to libvirt and will not work for this puspose in many cases it's not
worth having.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Now that we no longer support attaching to a live QEMU process not
managed by libvirt we can drop the backend functions as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Attaching to modern qemu will not work with all this code and attempting
to ressurect it would be mostly pointless.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
There are couple of functions which get shorter after the
treatment.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Couple of things happening in this patch:
1) We can mark the device we're adding onto active list as used
way before - when adding it onto temporary list.
2) When actually moving device from a temporary helper list onto
the list of active devices we check if the device isn't
already there. The same check is performed by
virSCSIVHostDeviceListAdd() later. Drop this duplicity.
3) The 'error' label is renamed to 'rollback' to reflect what it
is actually doing. While in the rest of the code we don't
allow random label names, this source file is different.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When looking up a USB device by vendor the
virUSBDeviceFindByVendor() is used. The function returns number
of items found. But the logic in caller to process it is
needlessly complicated.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are couple of functions which get shorter after the
treatment.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function is a good candidate for VIR_AUTOPTR() conversion.
But this conversion will be easier if we only add @pci device
onto @pcidevs list after it was all set up.
This is no functional change.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If spawning qemu fails then we report an error and proceed to
writing status XML onto the disk. This is unnecessary as we are
sure that the domain is not running.
At the same time, if virPidFileReadPath() fails it returns
-errno. Use it in the error message. It may explain what went
wrong.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Starting from version 4.1 qemu allows reporting 'features' for a given
QAPI type object. This allows reporting support of fixes and additions
which are otherwise invisible in the QAPI schema.
Implement a possibility to query 'features' in the QAPI query strings.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
When updating guest CPU definition according to the vCPU actually
created by QEMU, we want to use the generic qemuMonitorGetGuestCPU to
get both CPUID and MSR features.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unlike the old version (which is now called qemuMonitorGetGuestCPUx86),
this monitor API checks for individual features by their names rather
than processing CPUID bits. Thus we can get the list of enabled and
disabled features for both CPUID and MSR features.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function converts a list of QOM properties into a NULL-terminated
array of property names. The new type parameter may be used to limit the
result to properties of a specific type.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a generic replacement for the former virCPUx86DataAddFeature,
which worked on the generic virCPUDataPtr anyway.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It was never implemented or used for anything else anyway. Mainly
because it uses CPUID features bits. The function is renamed as
qemuMonitorGetGuestCPUx86 to make this explicit.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We used type=full expansion on the result of previous type=static
expansion to get all possible spellings of CPU features. Since we can
now translate the QEMU's canonical names to our names, we can drop this
magic and do only type=static CPU model expansion.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
By default query-cpu-model-expansion only reports canonical names of all
CPU features. We do some magic and call the command twice to get all
possible spellings of the features, but being able to consume canonical
names will allow us to drop this magic.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When building QEMU command line, we should use the preferred spelling of
each CPU feature without relying on compatibility aliases (which may be
removed at some point).
The "unavailable-features" CPU property is used as a witness for the
correct names of the features in our translation table.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The way we call query-cpu-model-expansion will rely on some capabilities
bits. Let's make sure all capabilities are set before probing host CPU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It is similar to "filtered-features" property, which reports CPUID bits
corresponding to disabled features, but more general. The
"unavailable-features" property supports both CPUID and MSR features by
listing their names.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We will use it to check whether QEMU supports a specific CPU property.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
So far we always used libvirt's name of each CPU feature relying on
backward compatible aliases in QEMU. The new translation table can be
used whenever QEMU mandates or prefers canonical feature names.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Normal CPU features use modern -cpu ...,feature=on|off syntax when
available, but kvm features kept using the old +feature or -feature.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Properly filter features which should not be passed to QEMU because they
were never supported by QEMU or they did nothing and QEMU dropped them.
Currently they are just silently ignored by the command line generator.
Let's make this process more visible and clean by dropping the features
from the domain's active definition in qemuProcessUpdateGuestCPU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This new internal API can be used for in place filtering of CPU features
in virCPUDef.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We already have virQEMUCapsCPUFilterFeatures for filtering features
which QEMU does not know about. Let's move osxsave and ospke from
qemuFeatureNoEffect there.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unused as of:
commit f136b83139
qemu: Rework setting process affinity
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Only succeed when @pid_value is 1, since according to the docs this is
the minimum requirement for any driver to implement this API.
Since this is test driver, we assume that any signal from the supported
list can be sent to pid 1 and we therefore succeed every time.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The libvirtd.conf file has a comment pointing people to format.html
which has nothing todo with the configuration file format.
It also has a comment about tests/daemon-conf which no longer exists,
and even if it did exist such comment is not relevant to end users
when this file is installed in /etc/.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Commit a3ab6d42 changed the libvirtd profile to a named profile
but neglected to accommodate the change in the qemu profile
ptrace and signal rules.
Later on 4ec3cf9a fixed that for ptrace and signal but openGraphicsFD
is still missing.
As a result, libvirtd is unable to open UI on libvirt >=5.1 e.g. with
virt-manager.
Add openGraphicsFD rule that references the libvirtd profile
by name in addition to full binary path.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1833040
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Normal practice is to provide a Ref API for all objects, but this was
forgotten for the virNetworkPortPtr object.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Use auto free to avoid leaking the "trustGuestRxFilters" strings
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Hosts for rbd are ceph monitor daemons. These have fixed IP addresses,
so they are often referenced by IP rather than hostname for
convenience, or to avoid relying on DNS. Using IPv4 addresses as the
host name works already, but IPv6 addresses require rbd-specific
escaping because the colon is used as an option separator in the
string passed to librados.
Escape these colons, and enclose the IPv6 address in square brackets
so it is distinguished from the port, which is currently mandatory.
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Change the domain conf so invoke the new network port public APIs instead
of the network callbacks.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The portid will be the UUID of the virNetworkPort object associated
with the network interface when a guest is running.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The various steps involved in reconnecting to a domain may cause updates
to the virDomainObj struct that need to be reflected in the saved status
file.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When starting up it is important to notify the network driver of any
NICs which are used by running guests so that it can account for any
resources they are using.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This initial implementation just wires up the APIs and does tracking of
the port XML definitions. It is not yet integrated into the resource
allocation logic.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virNetworkObjPtr state will need to maintain a record of all
virNetworkPortDefPtr objects associated with the network. Record these
in a hash and add APIs for manipulating them.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Define the wire protocol for the virNetworkPort APIs and enable the
client/server RPC dispatch.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce a new virNetworPort object that will present an attachment to
a virtual network from a VM.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Separate network port bandwidth update code from the domain driver
network callback implementation.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Separate network port deletion code from the domain driver network
callback implementation.
Reivewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Separate network port notification code from the domain driver network
callback implementation.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Separate network port allocation code from the domain driver network
callback implementation.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The current qemu driver code for changing bandwidth on a NIC first asks
the network driver if the change is supported, then changes the
bandwidth on the VIF, and then tells the network driver to update the
bandwidth on the bridge.
This is potentially racing if a parallel API call causes the network
driver to allocate bandwidth on the bridge between the check and the
update phases.
Change the code to just try to apply the network bridge update
immediately and rollback at the end if something failed.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When (un)plugging an interface into a network, the 'plugged'
and 'unplugged' operations are invoked in the hook script.
The data provided to the script contains the network XML, the
domain XML and the domain interface XML. When we strictly split the
drivers up this will no longer be possible and thus breakage is
unavoidable. The hook scripts are not considered to be covered by the
API guarantee so this is OK.
To avoid existing scripts taking the wrong action, the existing
operations are changed to 'port-created' and 'port-deleted'
instead. These will receive the network XML and the network port
XML.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the virDomainNetDef object into a virNetworkPortDef object
at the start of networkReleaseActualDevice. This largely decouples
the method impl from the domain object type.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the virDomainNetDef object into a virNetworkPortDef object
at the start of networkNotifyActualDevice. This largely decouples
the method impl from the domain object type.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the virDomainNetDef object into a virNetworkPortDef object
at the start of networkAllocateActualDevice. This largely decouples
the method impl from the domain object type.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Helper APIs are needed to
- Populate basic virNetworkPortDef from virDomainNetDef
- Set a virDomainActualNetDef from virNetworkPortDef
- Populate a full virNetworkPortDef from virDomainActualNetDef
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Stop passing a virDomainNetDefPtr parameter to networkLogAllocation,
instead just pass in the MAC address. The actual device type is also not
required, since virNetworkForwardIfDefPtr has a type field that can be
used instead.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce a virNetworkPortDefPtr struct to represent the data associated
with a virtual network port. Add APIs for parsing/formatting XML docs
with the data.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The domain conf actual network def stores a <class id='3'/> element
separately from the <bandwidth>. The class ID should really just be
an attribute on the <bandwidth> element. We can't change existing
XML, and this isn't visible to users since it is internal XML only.
When we expose the new network port XML to users though, we should
get the design right.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When libvirtd is run inside a container it is normal that neither
systemd nor pm-utils will be available. In this case there is no way to
suspend the host, so libvirt should just report the feature unsupported
instead of raising an error.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
If libvirt receives DISCONNECTED event and prDaemonRunning is set
to false, and qemuDomainRemoveDiskDevice() is performing in the
meantime, then qemuDomainRemoveDiskDevice() will fail to remove
pr-helper object because prDaemonRunning is false. But removing
that check from qemuHotplugRemoveManagedPR() is not enough,
because after removing the object through monitor the
qemuProcessKillManagedPRDaemon() is called which contains the
same check. Thus the pr-helper process might be left behind.
Signed-off-by: Jie Wang <wangjie88@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Log the flags passed to the function in a exploded state so that it's
easily visible what's happening to the image.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since the behaviour of launch security is heavily dependent on 3rd party
vendors (e.g. AMD SEV) where the data returned can be essentially
anything, the most reasonable approach here in the test driver is not to
try return any data.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The hash table returned by qemuMonitorGetAllBlockJobInfo is organized by
the frontend name (which skipps the 'drive-' prefix). While our code
properly matches the jobs to the disk, qemu needs the full job name
including the 'drive-' prefix to be able to identify jobs.
Fix this by adding an argument to qemuMonitorGetAllBlockJobInfo which
does not modify the job name before filling the hash.
This fixes a regression where users would not be able to cancel/pivot
block jobs after restarting libvirtd while a blockjob is running.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit 76b9aba2ba I refactored how the function treats the readonly
flag which introduced a bug when we'd not allow to force read-write
state for an image.
This created problems with blockjobs where we need to temporarily
force images to have read-write permissions.
Rename QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_READ_ONLY to
QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_ONLY and also introduce
a complement QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_WRITE which
will allow to force write access.
https://bugzilla.redhat.com/show_bug.cgi?id=1717768
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit 76b9aba2ba I tried to refactor qemuDomainStorageSourceAccessAllow
but used wrong operators for adding bitwise flags.
This way the flags would result in 0 if any of them would be applied.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Updates the existing image stored in @path, in case @dxml contains valid
XML supported by the fake host.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Extracting the code logic for opening and parsing a test image from
testDomainRestoreFlags into a separate function, allows us to reuse this
code in other functions such as testDomainSaveImageGetXMLDesc.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Extracting the code logic for writing a test image to disk from
testDomainSaveFlags into a separate function, allows us to reuse this
code in other functions such as testDomainSaveImageDefineXML.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The upcoming virDomainBackup() API needs to take advantage of the
ability to expose a bitmap as part of nbd-server-add for a pull-mode
backup (this is the recently-added QEMU_CAPS_NBD_BITMAP capability).
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The upcoming virDomainBackup() API needs to take advantage of various
qcow2 bitmap manipulations as the basis to virDomainCheckpoints and
incremental backups. Add four functions to expose
block-dirty-bitmap-{add,enable,disable,merge} (this is the
recently-added QEMU_CAPS_BITMAP_MERGE capability).
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Add two capabilities for testing features required for the upcoming
virDomainBackupBegin: use block-dirty-bitmap-merge as the generic
witness of bitmap support needed for checkpoints (since all of the
bitmap management functionalities were finalized in the same qemu 4.0
release), and the bitmap parameter to nbd-server-add for pull-mode
backup support. Even though both capabilities are likely to be
present or absent together (that is, it is unlikely to encounter a
qemu that backports only one of the two), it still makes sense to keep
two capabilities as the two uses are orthogonal (full backups don't
require checkpoints, push mode backups don't require NBD bitmap
support, and checkpoints can be used for more than just incremental
backups).
Existing code is not affected by the new capabilities.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Migration always uses a TCP socket for NBD servers, because we don't
support same-host migration. But upcoming pull-mode incremental backup
needs to also support a Unix socket, for retrieving the backup from
the same host. Support this by plumbing virStorageNetHostDef through
the monitor calls, since that is a nice reusable struct that can track
both TCP and Unix sockets.
Update qemumonitorjsontest to verify both forms of the QMP command.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Now that we never get to the actual snapshot code if there's nothing to
do we can remove the variable and surrounding logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Skip actual snapshot creation code if we have 0 disks to snapshot.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All cases taking the 'cleanup' path can take the original 'error' path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce 'rc' for collecting state from monitor commands so that we can
initialize 'ret' to -1. This also fixes few cases which could return 0
from the function despite an error condition.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainSnapshotDiskDataFree also removes the resources associated
with the disk data. Move the unlinking of the just-created file so that
we can unify the cleanup paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In commit cbb4d229de I named the function with 'free' suffix, but at
that time it already did some non-freeing tasks. Rename it to make it
obvious that it's not just memory managemet.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function skips disks which are not selected for snapshot. Rather
than creating a sparse array and check whether the given field is filled
compress the entries.
Note that this does not allocate a smaller array, but the memory
allocation is short-lived.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If there's an offline config definition save it unconditionally even if
it was not modified.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The error path is unlikely thus saving the status XML even if we didn't
modify it does not add much burden.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After getting rid of pre-transaction qemu support the cleanup section is
unused.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Validate @keycodes before successfully returning. Since this is test
driver, @holdtime is being unused here.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit 2f2254c7f4 attempted to fix a memory leak by ensuring
cpumapToSet is always a freshly allocated bitmap, but regrettably
introduced a NULL pointer access while doing so, because it called
virBitmapCopy() without allocating the destination bitmap first.
Solve the issue by using virBitmapNewCopy() instead.
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Due to this bug the following command would fail on any host where TSC
frequency can be probed:
$ virsh capabilities | virsh cpu-baseline /dev/stdin
error: unsupported configuration: Invalid TSC frequency
https://bugzilla.redhat.com/show_bug.cgi?id=1641702
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's a premature optimization. It's perfectly acceptable for
'error' label to deal with @vm == NULL case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
We're using VIR_AUTOPTR() for everything now, plus the
cleanup section was not doing anything useful anyway.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In two out of three scenarios we are cleaning up properly after
ourselves, but commit 5f2212c062 has changed the remaining one
in a way that caused it to start leaking cpumapToSet.
Refactor the logic so that cpumapToSet is always a freshly
allocated bitmap that gets cleaned up automatically thanks to
VIR_AUTOPTR(); this also allows us to remove the hostcpumap
variable.
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right now, if numad fails, we raise an error but return an
empty string to the caller instead of a NULL pointer, which
means processing will continue and the user will see
# virsh start guest
error: Failed to start domain guest
error: invalid argument: Failed to parse bitmap ''
instead of a more reasonable
# virsh start guest
error: Failed to start domain guest
error: operation failed: Failed to query numad for the advisory nodeset
Make sure the user gets a better error message.
https://bugzilla.redhat.com/show_bug.cgi?id=1716387
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Ever since the feature was introduced with commit 0f8e7ae33a,
it has contained a logic error in that it attempted to use a NUMA
node map where a CPU map was expected.
Because of that, guests using <numatune> might fail to start:
# virsh start guest
error: Failed to start domain guest
error: cannot set CPU affinity on process 40055: Invalid argument
This was particularly easy to trigger on POWER 8 machines, where
secondary threads always show up as offline in the host: having
<numatune>
<memory mode='strict' placement='static' nodeset='1'/>
</numatune>
in the guest configuration, for example, would result in libvirt
trying to set the process affinity so that it would prefer
running on CPU 1, but since that's a secondary thread and thus
shows up as offline, the operation would fail, and so would
starting the guest.
Use the newly introduced virNumaNodesetToCPUset() to convert the
NUMA node map to a CPU map, which in the example above would be
48,56,64,72,80,88 - a valid input for virProcessSetAffinity().
https://bugzilla.redhat.com/show_bug.cgi?id=1703661
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This helper converts a set of NUMA node to the set of CPUs
they contain.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This argument wasn't validated anywhere, neither in the generic
implementation nor in the individual drivers. As a result a call to this
function with a large enough codeset value prior to this change causes
libvirtd to crash.
This happens because all drivers call virKeycodeValueTranslate which
uses codeset as an index to the virKeymapValues array, causing an
out-of-bounds error.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
When migrating a domain with invtsc CPU feature enabled, the TSC
frequency of the destination host must match the frequency used when the
domain was started on the source host or the destination host has to
support TSC scaling.
If the frequencies do not match and the destination host does not
support TSC scaling, QEMU will fail to set the right TSC frequency when
starting vCPUs on the destination and thus migration will fail. However,
this is quite late since both host might have spent significant time
transferring memory and perhaps even storage data.
By adding the check to libvirt we can let migration fail before any data
starts to be sent over. If for some reason libvirt is unable to detect
the host's TSC frequency or scaling support, we'll just let QEMU try and
the migration will either succeed or fail later.
Luckily, we mandate TSC frequency to be explicitly set in the domain XML
to even allow migration of domains with invtsc. We can just check
whether the requested frequency is compatible with the current host
before starting QEMU.
https://bugzilla.redhat.com/show_bug.cgi?id=1641702
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When the host CPU supports invariant TSC the host CPU definition created
by virCPUx86GetHost will contain (unless probing fails for some reason)
addition TSC related data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Commit 0a97486e09 moved them outside #ifdef, but after virCPUx86GetHost,
which will start calling them in the following patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This patch adds a new
<counter name='tsc' frequency='N' scaling='on|off'/>
element into the host CPU capabilities XML.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
On a KVM x86_64 host which supports invariant TSC this function can be
used to detect the TSC frequency and the availability of TSC scaling.
The magic MSR numbers required to check if VMX scaling is supported on
the host are documented in Volume 3 of the Intel® 64 and IA-32
Architectures Software Developer’s Manual.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The function is renamed as virQEMUCapsProbeHostCPU and it does not get
the list of allowed CPU models from qemuCaps anymore. This is
responsibility is moved to the caller. The result is just a very thin
wrapper around virCPUGetHost mostly required mocking in tests.
The generic function is used in place of a direct call to virCPUGetHost
in virQEMUCapsInitHostCPUModel to make sure tests don't accidentally
probe host CPU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1426162
Turns out, some aarch64 systems have SMBIOS info. That means we
can use dmidecode to fetch some information. If that fails, fall
back to the old behaviour.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
There's nothing x86 specific about this function. Rename the
function so that it has DMI suffix which enables it to be reused
on different arches (as using X86 from say ARM would look
suspicious).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
All current IOMMU features are specific to Intel IOMMU, so
understandably we check for the corresponding capabilities
inside the Intel-specific switch() branch; however, we want
to make sure SMMUv3 IOMMU users get an error if they try to
enable any of those features in their guest, and performing
the capability checks unconditionally is both the easiest
way to achieve that, as well as the one least likely to
result in us inadvertently letting users enable some new
Intel-specific IOMMU feature for ARM guests later on.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
SMMUv3 is an IOMMU implementation for ARM virt guests.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This capability can be used to figure out whether the
QEMU binary at hand supports the machine type property
we need in order to enable SMMUv3 IOMMU support.
Unfortunately we can't avoid probing the RISC-V binaries
along with the ARM ones, since both architectures have
their own 'virt' machine type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Current capability checks are specific to Intel IOMMU, so
we need to move them inside the switch() statement before
we can introduce more virDomainIOMMUModel values.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This doesn't make a whole lot of difference now, but once
we introduce more virDomainIOMMUModel values the current
structure will no longer work.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Ensure unexpected values are dealt with correctly, that
is by invoking virReportEnumRangeError() and immediately
returning a negative value to the caller.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
They were introduced by commit 0a97486e09 when moving functions.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the scheduler is set before vCPU0 cannot be moved into its cpu,cpuacct
cgroup. While it is not yet known whether this is a bug or not, it makes sense
for us to do that later as otherwise the scheduler would be inherited by vCPU
and I/O Threads even when they do not have any such setting specified.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Begins by writing a @start byte in the first position of @buffer and
then for every next byte it stores the value of its previous one
incremented by one.
Behaves the same for both supported flags.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 6864d8f740
Hugepages don't work in session mode but when building memory
part of command line we query for the default size anyway. This
breaks creating domains under session daemon. Query the page size
only if it's clear we need hugepages.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Apart from virDomainDefValidate, virDomainDefPostParse is another
place where operating on info-less devices makes sense.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Ignore @source in the case of the test driver and return fixed private
IPv4 addresses for all the interfaces defined in the domain.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Creating firewall rules for the virtual networks causes the kernel to
load the conntrack module. This imposes a significant performance
penalty on Linux network traffic. Thus we want to only take that hit if
we actually have virtual networks running.
We need to create global firewall rules during startup in order to
"upgrade" rules for any running networks created by older libvirt.
If no running networks are present though, we can safely delay setup
until the time we actually start a network.
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Pull the logic for creating global iptables chains into a separate
method and protect its invocation with virOnce, to make it possible
to reuse it in non-startup paths.
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Mostly add comments explaining why there are two capabilites
for the same feature and how they interact.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Device validation should not have to wait until command line
generation time. Moving the code to a separate function also
allows us to avoid some unnecessary repetition.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rename the DOMAIN_DEVICE_ITERATE_GRAPHICS flag.
It was introduced by commit dd45c2710f
with the intention to run the Validate callback even on the graphics
device.
However, enumerating every single device in virDomainDeviceIterateFlags
is unsustainable and what really was special about the graphics device
was the lack of DeviceInfo.
Rename the flag and iterate over more info-less devices. (and leases)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Due to the way that our virObjectUnref() is written it's not
possible that a NULL is passed into *Dispose() function. However,
some functions check for that regardless.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Split out the 'shallow' and 'reuse' flags as booleans rather than passing
in flags and constructing them in irrelevant APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split out the 'shallow' flag as a boolean argument rather than passing
in flags and constructing them in irrelevant APIs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The NBD migration code uses drive/blockdev-mirror internally. In those
APIs we pass around flags for the monitor commands which are based on
the flags for the virDomainBlockRebase API. Since there's only one flag
which changes, pass it around explicitly rather than obscuring it in a
bitfield.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
At the point when we want to modify the permissions for the 'mirror' we
know whether it is supposed to have a backing chain or no. Given that
mirror->backingStore is populated only when we'd need to touch it ayways
we can use qemuDomainStorageSourceChainAccessAllow even in place of
qemuDomainStorageSourceAccessAllow used for other cases to simplify the
code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
One code path open-coded qemuDomainStorageSourceChainAccessAllow badly
and also did not integrate with the locking code.
Replace the separate calls with qemuDomainStorageSourceChainAccessAllow
which does everything internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since 4e797f1a we parse backingStore of mirror which will later be used
with blockdev. Add some validation for the user passed mirror at the
current point to make sure it's not used improperly.
Validate that it's not used without blockdev and also that it's not
passed when not requesting a shallow copy. Also add a chain terminator
for a deep copy since we know the resulting mirror will not have chain.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since 3decae00e9 qemuDomainStorageSourceAccessAllow revokes the
permissions it granted if it fails halfway, thus we can remove some
calls to qemuDomainStorageSourceAccessRevoke which tried to undo this
situation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since 3decae00e9 qemuDomainStorageSourceAccessRevoke keeps the libvirt
error which was set prior to the call around even after the call, thus
we don't need to do the same when reverting access in the block copy
code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When aborting or pivoting a block job we record which operation we do
for the mirror in the virDomainDiskDef structure. As everything is
synchronized by a job it's not necessary to modify the state prior to
calling the monitor and resetting the state on failure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All blockjobs get their status updated by events from qemu, so this code
no longer makes sense.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When used with the new job handler the values will also include some of
the non-public values from qemuBlockjobState. Modify the comment to
clarify this.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virtlogd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtlockd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The admin protocol RPC messages are only intended for use by the user
running the daemon. As such they should not be allowed for any client
UID that does not match the server UID.
Fixes CVE-2019-10132
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In attempt to getting rid of errN labels let's start with the
most upper one and rename it to 'error'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This reverts commit dfd70ca1eb.
Pushed by a mistake, sorry. There's still some discussion going
on upstream.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Qemu added reporting of virtio balloon new statistics stat-htlb-pgalloc and
stat-htlb-pgfail since qemu-3.0 commit b7b12644297. The value of
stat-htlb-pgalloc represents the number of successful hugetlb page allocations
while stat-htlb-pgfail represents the number of failed ones. Add this
statistics reporting to libvirt.
To enable this feature for vm, guest kenel >= 4.17 is required because
the exporting hugetlb page allocation for virtio balloon is introduced
since 6c64fe7f.
Signed-off-by: Han Han <hhan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Snapshot create operation saves the live XML and uses it to replace the
domain definition in case of revert. But the VM config XML is not saved
and the revert operation does not address this issue. This commit
prevents the config XML from being overridden by snapshot definition.
An active domain stores both current and new definitions. The current
definition (vm->def) stores the live XML and the new definition
(vm->newDef) stores the config XML. In an inactive domain, only the
config XML is persistent, and it's saved in vm->def.
The revert operation uses the virDomainObjAssignDef() to set the
snapshot definition in vm->newDef, if domain is active, or in vm->def
otherwise. But before that, it saves the old value to return to
caller. This return is used here to restore the config XML after
all snapshot startup process finish.
Signed-off-by: Maxiwell S. Garcia <maxiwell@linux.ibm.com>
If an FD is passed into a child using:
virCommandPassFD(cmd, fd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);
then the parent should refrain from touching @fd thereafter. This
is even documented in virCommandPassFD() comment. The reason is
that either at virCommandRun()/virCommandRunAsync() or
virCommandFree() time the @fd will be closed. Closing it earlier,
e.g. right after virCommandPassFD() call might result in
undesired results. Another thread might open a file and receive
the same FD which is then unexpectedly closed by virCommandFree()
or virCommandRun().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Various binaries are statically linking to libvirt_util.la and
other intermediate libraries we build. These intermediate libs
all get built into the main libvirt.so shared library eventually,
so we can dynamically link to that instead and reduce the on disk
footprint.
In libvirt-daemon RPM:
virtlockd: 1.6 MB -> 153 KB
virtlogd: 1.6 MB -> 157 KB
libvirt_iohelper: 937 KB -> 23 KB
In libvirt-daemon-driver-network RPM:
libvirt_leaseshelper: 940 KB -> 26 KB
In libvirt-daemon-driver-storage-core RPM:
libvirt_parthelper: 926 KB -> 21 KB
IOW, about 5.6 MB total space saving in a build done on Fedora 30
x86_64 architecture.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1710575
It may happen that the system where libvirt is built at doesn't
have udevadm binary but the one where it runs does have it.
If we change how udevadm is run in virWaitForDevices() then we
can safely pass a default value in m4 macro.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The udevsettle binary is no longer used anywhere as it was
replaced by 'udevadm settle'. There's no reason for us to even
check for it in configure.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's not true that there is a backup loop. There isn't. Drop this
part of the comment to not confuse anybody.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since we know the full list of machine types supported
by the QEMU binary when probing machine type properties,
we can save some work (and eventually test suite churn,
as more architecture-specific machine types need to be
probed) by only probing machines that we know exist.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Now that we have the list of machine types available when
probing machine type properties, we can list properties for
the canonicalized version of the "pseries" machine type
instead of having to go through "spapr-machine", which we
know to be the parent type for all "pseries-*-machine"
types. By doing this, we'll be able to find even properties
that are only available from a certain versioned machine
type forward, and can't thus be obtained when looking at
the parent type only.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The QOM type for machine types is the machine type name
followed by the -machine suffix. Since this is always the
case, we can make virQEMUCapsMachineProps more readable
and avoid repetition by not including the suffix there and
adding it automatically while processing the data; moreover,
when later on we will start figuring out which specific
versioned machine type to probe at runtime instead of doing
so statically, adding the suffix dynamically will become
necessary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
We're going to need information about available machine types
when probing machine type properties soon, and that means we
have to change the order we call QMP commands.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Up until now we've probed machine type properties, along with
properties for other types, in virQEMUCapsProbeQMPDevices(), but
soon we're going to need some logic that is specific to machine
types and as such wouldn't quite fit into that function.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Commit c257352797 introduced a logic bug where we will never save the
inactive XML after a blockjob as the variable which was determining
whether to do so is cleared right before. Thus even if we correctly
modify the inactive state it will be rolled back when libvirtd is
restarted.
Reported-by: Thomas Stein <hello@himbee.re>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It has been exported by systemd commit
commit a571c23e954cb88cdd5faa28593b19bd7c340130
libudev: export udev_monitor_set_receive_buffer_size()
released in v183.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When a vhost scsi device is hotplugged virt-aa-helper is called to
add the respective path.
For example the config:
<hostdev mode='subsystem' type='scsi_host' managed='no'>
<source protocol='vhost' wwpn='naa.50014059de6fba4f'/>
</hostdev>
Will call it to add:
/sys/kernel/config/target/vhost//naa.50014059de6fba4f
But in general /sys paths are filtered in virt-aa-helper.c:valid_path
To allow the path used for vhost-scsi we need to add it to the list of
known and accepted overrides.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1829223
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The function was deprecated in udev 219 and all the supported OSes
don't have older version of udev or systemd.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Qemu dropped cpu features for osxsave and ospke [1][2].
The reason for the instant removal is that those features were never
configurable as discussed in [3].
Fortunately the use cases adding those flags in the past are rare, but
they exist. One that I identified are e.g. older virt-install when used
with --cpu=host-model and there always could be the case of a user
adding it to the guest xml.
This triggers an issue like:
qemu-system-x86_64: can't apply global Broadwell-noTSX-x86_64-
cpu.osxsave=on: Property '.osxsave' not found
Ensure that this does no more break spawning newer qemu versions by
not rendering those features into the qemu command line.
Fixes: https://bugs.launchpad.net/fedora/+source/qemu/+bug/1825195
Resolves: https://bugzilla.redhat.com/1644848
[1]: https://git.qemu.org/?p=qemu.git;a=commit;h=f1a2352
[2]: https://git.qemu.org/?p=qemu.git;a=commit;h=9ccb978
[3]: https://www.mail-archive.com/qemu-devel@nongnu.org/msg561877.html
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091
The bit is set when microcode provides the mechanism to invoke a flush
of various exploitable CPU buffers by invoking the VERW instruction.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This function gets snapshot XML (provided by used) as an
argument. It parses it into a local variable @def and then sets
some more members (e.g. it creates a copy of live domain XML).
Then it proceeds to checking if snapshot XML is valid (e.g. it
contains as many disks as currently in the domain). If this fails
then the control jumps to endjob label and subsequently return
from the function. This is where AUTOFREE function for @def is
ran. Well, because the code says to run plain VIR_FREE() we leak
some memory because @def is actually an object and therefore
it should have been declared as AUTOUNREF.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The idea of virCommand* APIs is that a possible error that
occurred while constructing cmd line is kept in virCommand
struct. If that's the case all subsequent calls to virCommand*()
are NO-OPs or they return an error. Well,
virCommandPassFDGetFDIndex() is not honoring that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
If virStoragePoolObjNew() fails to create new volume object list
then virObjectUnref() is called and since refcounter is 1 then
virStoragePoolObjDispose() is called which in turn calls
virStoragePoolObjClearVols() which in turn dereferences
obj->volumes.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The qsort element is a pointer of virResctrlMonitorStats, and
the comparing function's arguments have a type of pointer of
virResctrlMonitorStatsPtr.
Signed-off-by: Huaqiang <huaqiang.wang@intel.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Return the number of disks present in the configuration of the test
domain when called with @errors as NULL and @maxerrors as 0.
Otherwise report an error for every second disk, assigning available
error codes in a cyclic order.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In refactoring the snapshot code to prepare for checkpoints, I changed
qemuDomainMomentDiscardAll to take a callback that would handle the
cleanup of either a snapshot or a checkpoint, but failed to set the
callback on one of the two snapshot callers. As a result, 'virsh
undefine $dom --snapshots-metadata' crashed on a NULL function
dereference.
Fixes: a487890d37
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1707708
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
If no board was detected then VIR_REALLOC_N() done at the end of
the function will actually free the memory (because nborads ==
0), but @boards will be set to a non-NULL pointer. This makes it
unnecessary harder for a caller to see if any board was detected.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This brings about a couple of benefits:
- use of VIR_AUTOUNREF() simplifies several callers
- Fixes a todo about virDomainMomentObjList not being polymorphic enough
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
In preparation for making virDomainSnapshotDef a descendant of
virObject, it is time to fix all callers that allocate an object to
use virDomainSnapshotDefNew() instead of VIR_ALLOC(). Fortunately,
there aren't very many :)
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
VIR_CLASS_NEW insists that descendents of virObject have 'parent' as
the name of their inherited base class member at offset 0. While it
would be possible to write a new class-creation macro that takes the
actual field name 'current', and rewrite VIR_CLASS_NEW to call the new
macro with the hard-coded name 'parent', it seems less confusing if
all object code uses similar naming. Thus, this is a mechanical rename
in preparation of making virDomainSnapshotDef a descendent of
virObject.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
VIR_CLASS_NEW insists that descendents of virObject have 'parent' as
the name of their inherited base class member at offset 0. While it
would be possible to write a new class-creation macro that takes the
actual field name, and rewrite VIR_CLASS_NEW to call the new macro
with the hard-coded name 'parent', so that we could make
virDomainMomentDef use a custom name for its base class, it seems less
confusing if all object code uses similar naming. Thus, this is a
mechanical rename in preparation of making virDomainSnapshotDef a
descendent of virObject, when we can no longer use 'parent' for a
different purpose than the base class.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Use qemuDomainStorageSourceAccessModify with correct flags to do the
job.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some operations e.g. namespace setup are not necessary when modifying
access to a file which the VM can already access. Add a flag which
allows to skip them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In some cases when we need to modify access permissions for a storage
source which is already used by the VM we should not revoke all
permissions on a failure. Allow this in qemuDomainStorageSourceAccessModify
by adding a new flag.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than jumping to the correct label use a set of booleans to
determine which operation needs to be rolled back. This will allow more
flexibility when e.g. rollback after a failed operation will not be
necessary/desired.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a new flag which will set the image as read-only even if the image
data allows writing.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use qemuDomainStorageSourceAccessModify instead of the individual calls.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add a new flag QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_CHAIN to select whether
to work on single image or full chain.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will add a few more flags. Add an enum to collect them
so that we don't end up with multiple bools.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function will be able to deal with non-chains too so drop 'Chain'
and also change the suffix to 'Modify' as it's used both for setup and
teardown.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce qemuDomainStorageSourceChainAccess(Allow|Revoke) as entry
points to qemuDomainStorageSourceChainAccessPrepare for symmetry with
the functions for single backing chain elements.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move it to qemu_domain.c and call it
qemuDomainStorageSourceChainAccessPrepare.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commits 4bc42986 and 218c81ea removed virDomainStorageSourceFormat on
the grounds that there were no external callers; however, the upcoming
backup code wants to output a <target> (push mode) or <scratch> (pull
mode) element that is in all other respects identical to a domain's
<source> element, where the previous virDomainStorageSourceFormat fit
the bill nicely. But rather than reverting the commits, it's easier to
just add an additional parameter for the element name to use, and
update all callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
Prepare section for boolean queries and make the typed query section
more clear.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We treated broken schema as failure to look up given query. Treat it as
a separate error instead. It is unlikely to happen though.
Also prepare for possibility of user errors if query components which
can't be queired deeper have following components.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce an array of callbacks for given 'meta-type' of the QAPI schema
structure rather than using code to select it. This will simplify
extension for the other meta-types which are not handled yet.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than modifying the context struct add a helpers that does this.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Create a context data type for the QAPI path rather than passing an
increasing number of arguments.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virQEMUQAPISchemaTypeFromObject and virQEMUQAPISchemaTypeFromObject
can be very easily folded into virQEMUQAPISchemaTraverseObject removing
the need for the helpers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Simplify virQEMUQAPISchemaTraverse by separating out the necessary
operations for given 'meta-type' into separate functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Return 1 if the schema entry was found optionally returning it rather
than depending on the returned object.
Some callers don't care which schema object belongs to the query, but
rather only want to know whether it exists. Additionally this will allow
introducing boolean queries for checking if enum values exist.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To allow for boolean query string, let's return the queried schema entry
via argument rather than a return value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The return statement after the infinite loop without a break is there to
appease the compiler. Make it return NULL as it would be a failure if
control flow reaches that point.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Currently, the way virBufferFreeAndReset() works is it relies on
virBufferContentAndReset() to fetch the buffer content which is
then freed. This works as long as there is no bug in virBuffer*
implementation (not true apparently). Explicitly call free() over
buffer content.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
After 65a372d6e0 the @cfg variable is no longer used. This means
we can drop it and therefore drop 'cleanup' label with it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The @error member can contain a positive value (errno) or a
negative value (-1) to denote a usage error. It doesn't make
much sense to store it as unsigned then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
If an error occurs in a virBuffer* API the idea is to free the
content immediately and set @error member used in error reporting
later. Well, this is not what how virBufferAddBuffer works.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Implement testDomainGetTime by returning a fixed timestamp.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Now that libvirt has firmware auto selection feature the nvram
config knob is more or less obsolete. It still makes sense in
cases where distro users are using does not provide FW descriptor
files, therefore I'm not removing it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Match the XML feature usage of the qemu driver, so the test driver
doesn't reject things like <os firmware='efi'/>.
Particularly VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING is needed to
prevent regressions for test suite users with net model strings that
aren't in the virDomainNetModel enum yet
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This function is calling public API virNetworkLookupByName()
which resets the error. Therefore, if
virDomainNetReleaseActualDevice() is used in cleanup path it
actually resets the original error that got us jump into
'cleanup' label.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This caused the live XML to report the 'bridge' type instead of the
'network' type, which is a behavioural regression.
It also breaks 'virsh domif-setlink', 'virsh update-device' and
'virsh domiftune'
This reverts commit 518026e159.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
vhostfd passed to cmd->passfd in virCommandPassFD, virCommandFree will
always close cmd->passfd when qemuBuildSCSIVHostHostdevDevStr failed.
Signed-off-by: Jie Wang <wangjie88@huawei.com>
This commit is similar with 692400f4. It fixes an uninitialized
variable to avoid garbage value. This case, returns 0 jiffies if an
error occurs with virNetDevBridgeGet.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1697676
If an user tries to attach a device with colliding user alias
then we attach it happily and thus leave domain unable to start.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When attaching a device to live XML we don't care (well,
shouldn't care) that there's already a device in inactive XML
that has the same user alias.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If we're attaching a device to both inactive and live XML then
@ret is overwritten which may result in incorrect return value.
For instance, if attaching to inactive XML succeeds, @ret is
assigned value of zero and control proceeds to attaching the
device to live XML. Here, if say
virDomainDeviceValidateAliasForHotplug() fails the control jumps
over to 'cleanup' label and zero is returned indicating success.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Our coding style specifies that only negative values are considered as
error. Check for return value of virDomainDiskInsert() properly,
following the style. Not that the function can now return anything other
than 0 or -1, but it just triggers my OCD.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Added in QEMU by v2.12.0-481-g0da0fb0628 (released in 3.0).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In cases when the hash function for a name collides with other entry
already in the hash we prepend to the bucket. This creates a 'stack
effect' on the buckets if we then iterate through the hash. Normally
this is not a problem, but in tests we want deterministic results.
Since it does not matter where we add the entry and it's usually more
probable that a different entry will be accessed next change it to
append to the end of the bucket. Luckily we already iterate throught the
bucket once thus we can easily find the last entry and just connect the
new entry after it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
If the current QEMU guest can't wake up from suspend properly,
and we are able to determine that, avoid suspending the guest
at all. To be able to determine this support, QEMU needs to
implement the 'query-current-machine' QMP call. This is reflected
by the QEMU_CAPS_QUERY_CURRENT_MACHINE cap.
If the cap is enabled, a new function qemuDomainProbeQMPCurrentMachine
is called. This is wrapper for qemuMonitorGetCurrentMachineInfo,
where the 'wakeup-suspend-support' flag is retrieved from
'query-current-machine'. If wakeupSuspendSupport is true,
proceed with the regular flow of qemuDomainPMSuspendForDuration.
The absence of QEMU_CAPS_QUERY_CURRENT_MACHINE indicates that
we're dealing with a QEMU version older than 4.0 (which implements
the required QMP API). In this case, proceed as usual with the
suspend logic of qemuDomainPMSuspendForDuration, since we can't
assume whether the guest has support or not.
Fixes: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1759509
Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
So far, this command returns a structure with only one member:
'wakeup-suspend-support'. But that's okay. It's what we are after
anyway.
Based-on-work-of: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
QEMU commit 46ea94ca9cf ("qmp: query-current-machine with
wakeup-suspend-support") added a new QMP command called
'query-current-machine' that retrieves guest parameters that
can vary in the same machine model (e.g. ACPI support for x86 VMs
depends on the '--no-acpi' option). Currently, this API has a single
flag, 'wakeup-suspend-support', that indicates whether the guest has
the capability of waking up from suspended state.
Introduce a libvirt capability that reflects whether qemu has the
monitor command.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
virCgroup struct is always defined and the free function is not calling
anything that would require OS supporting cgroups.
This fixes an issue if we try to start a VM with QEMU binary that
doesn't support QXL. The start operation will fail in
qemuProcessStartValidateVideo() which will set correct error message,
but later in one of the cleanup paths we will call
qemuDomainObjPrivateDataClear() which always calls virCgroupFree()
and that will fail on OS that doesn't support cgroups and it will
set a new error which will be eventually reported to user.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If a bitmap of a shorter length than the data buffer is passed to
virBitmapToDataBuf, it will read off the end of the bitmap and copy junk
into the returned buffer. Add a check to only copy the length of the
bitmap to the buffer.
The problem can be observed after setting a vcpu affinity using the vcpupin
command on a system with a large number of cores:
# virsh vcpupin example_domain 0 0
# virsh vcpupin example_domain 0
VCPU CPU Affinity
---------------------------
0 0,192,197-198,202
Signed-off-by: John Allen <john.allen@amd.com>
Different check values are not ABI compatible. For example
if on migration we change 'full' to 'partial' then guest cpu
on destination can be different.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
If there's an error when setting up QoS on a bridge the control
jumps over to 'err5' label. Here, the virNetDevBandwidthClear()
is called to clear out any partially set QoS. This function can
also report an error which would overwrite the actual error that
caused us jumping here. Use virErrorPreserveLast() to preserve
the original error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
qemu 4.0.0 will prefix most errors with 'Error: ', so consider any
string instance of that an error.
This fixes savevm failure detection when migration is blocked due to
usage of nested VMX
https://bugzilla.redhat.com/show_bug.cgi?id=1697997
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Drop redundant NULL checks, and add an error string prefix
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Replaced usage of virSaveLastError and virSetError/virFreeError with
virErrorPreserveLast and virErrorRestore respectively.
Signed-off-by: Syed Humaid <syedhumaidbinharoon@gmail.com>
The @firmware string is allocated, but never freed.
4 bytes in 1 blocks are definitely lost in loss record 1 of 44
at 0x483579F: malloc (vg_replace_malloc.c:299)
by 0x76FB469: strdup (strdup.c:42)
by 0x497B6DE: virStrdup (virstring.c:966)
by 0x48F6FD3: virConfGetValueString (virconf.c:908)
by 0x4B3E9B6: virVMXGetConfigStringHelper (vmx.c:736)
by 0x4B3EA6B: virVMXGetConfigString (vmx.c:756)
by 0x4B41AEA: virVMXParseConfig (vmx.c:1832)
by 0x10B8E4: testCompareFiles (vmx2xmltest.c:79)
by 0x10BAB8: testCompareHelper (vmx2xmltest.c:124)
by 0x10D058: virTestRun (testutils.c:174)
by 0x10CDDA: mymain (vmx2xmltest.c:288)
by 0x10F11C: virTestMain (testutils.c:1096)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pino Toscano <ptoscano@redhat.com>
Allocated in libxlDriverConfigNew(), the @configBaseDir is never
freed.
13 bytes in 1 blocks are definitely lost in loss record 36 of 125
at 0x483579F: malloc (vg_replace_malloc.c:299)
by 0x8012469: strdup (strdup.c:42)
by 0x52926DE: virStrdup (virstring.c:966)
by 0x11D46B: libxlDriverConfigNew (libxl_conf.c:1749)
by 0x114D78: testCompareXMLToDomConfig (libxlxml2domconfigtest.c:62)
by 0x1152A3: testCompareXMLToDomConfigHelper (libxlxml2domconfigtest.c:160)
by 0x115925: virTestRun (testutils.c:174)
by 0x1154A4: mymain (libxlxml2domconfigtest.c:216)
by 0x1179E9: virTestMain (testutils.c:1096)
by 0x1154FD: main (libxlxml2domconfigtest.c:224)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function is not used anymore. Let's remove it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
It's funny how this went unnoticed for such a long time. Long
story short, if a domain is configured with
VIR_DOMAIN_NUMATUNE_MEM_STRICT libvirt doesn't really honour
that. This is because of 7e72ac7878 after which libvirt allowed
qemu to allocate memory just anywhere and only after that it used
some magic involving cpuset.memory_migrate and cpuset.mems to
move the memory to desired NUMA nodes. This was done in order to
work around some KVM bug where KVM would fail if there wasn't a
DMA zone available on the NUMA node. Well, while the work around
might stopped libvirt tickling the KVM bug it also caused a bug
on libvirt side: if there is not enough memory on configured NUMA
node(s) then any attempt to start a domain must fail. Because of
the way we play with guest memory domains can start just happily.
The solution is to move the child we've just forked into emulator
cgroup, set up cpuset.mems and exec() qemu only after that.
This basically reverts 7e72ac7878 which was a workaround
for kernel bug. This bug was apparently fixed because I've tested
this successfully with recent kernel.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This reverts commit f1d6585300.
Turns out, this caused a regression. There is this (perhaps less
known) semantic of virDomainAttachDevice() where if the device
the API is trying to attach is a CDROM/floppy that is already in
the domain the attach request is handled as 'change the media in
the drive'.
We have a better fix anyways.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
This tries to fix the same problem as f1d6585300 but it's doing
so in a less invasive way.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
This function checks if given drive address is already present in
passed domain definition. Expose the function as it will be used
shortly.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
During initial NIC setup the hypervisor drivers are responsible for
attaching the TAP device to the bridge device. Any fixup after libvirtd
restarts should thus also be their responsibility.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The call to resolve the actual network type will turn any NICs with
type=network into one of the other types. Thus there should be no need
to handle type=network in later switch() statements jumping off the
actual type.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Ports allocated on virtual networks with type=nat|route|open all get
given an actual type of 'network'.
Only ports in networks with type=bridge use an actual type of 'bridge'.
This distinction makes little sense since the virtualization drivers
will treat both actual types in exactly the same way, as they're all
just bridge devices a VM needs to be connected to.
This doesn't affect user visible XML since the "actual" device XML
is internal only, but we need code to convert the data upgrades.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virNetDevBandwidthParse method uses the interface type to decide
whether to allow use of the "floor" parameter. Using the interface
type is not convenient as callers may not have that available, but
still wish to allow use of "floor". Switch to an explicit boolean
to control its usage.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reword error messages to make it clear that the combined floor settings
of all NICs are exceeding the network inbound peak/average
settings. Including the actual values being checked helps to diagnose
what is actually wrong.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In extreme cases libvirt can get mixed up about what VMs are running and
attached to a network leading to the cached floor sum value being
outdated. When this happens the only option is to destroy the network
and then restart libvirtd. If we set floor sum back to zero when
starting the network, we avoid the need for a libvirtd restart at least.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Replaced all virSaveLastError and virSetError/virFreeError usages to
virErrorPreserveLast and virErrorRestore respectively.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Syed Humaid <syedhumaidbinharoon@gmail.com>
The networkPlugBandwidth & networkUnplugBandwidth methods currently take
a virDomainNetDefPtr. To remove the dependency on the domain config
struct, pass individual parameters instead.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
All but one of the network types supports port profiles. Rather than
duplicating the code to merge profiles 3 times, do it once and then
later report an error if used from the wrong place.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Firstly, VIR_STRDUP() accepts NULL, so there is no need to check
if the string we want to duplicate is not-NULL. Secondly,
virDomainNetSetModelString() also accepts NULL. Thirdly, we have
VIR_AUTOFREE().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
f1056279 removed virDomainSnapshotDef.current and leaved
using vm->current_snapshot only. Later 4819f54bd moved current snapshot
tracking to virDomainSnapshotObjList. As vz driver never used
vm->current_snaphot this patch includes fixes after both commits.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
ACKed-by: Maxim Nestratov <mnestratov@virtuozzo.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Wire up the accessor functions necessary for the testsuite to install
an alternative post-parse handler from normal drivers. I could have
modified the signature for virDomainXMLOptionNew() to take another
parameter, but thought it was easier to add a new set function rather
than chase down all existing callers. Until code actually sets the
override, there is no change in behavior.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Move the non-deterministic code that sets snapshot properties
independently of what the incoming XML described to instead live in a
default post-parse function common to virDomainMoment (as checkpoints
will also reuse it in later patches). This patch is just code motion,
with no difference to any callers; but the next patch will further
refactor things to allow for a per-driver override, used by the
testsuite to perform deterministic post-parse actions for better
coverage of parser/formatter code.
Note that the post-parse code is intentionally not run during a
snapshot redefine, since that code path already requires a valid
snapshot name and creation time from the XML.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
None of the existing drivers actually use the 0-valued 'nostate'
snapshot state; rather, it was a fluke of implementation. In fact,
some drivers, like qemu, actively reject 'nostate' as invalid during a
snapshot redefine. Normally, a driver computes the state post-parse
from the current domain, and thus virDomainSnapshotGetXMLDesc() will
never expose the state. However, since the testsuite lacks any
associated domain to copy state from, and lacks post-parse processing
that normal drivers have, the testsuite output had several spots with
the state, coupled with a regex filter to ignore the oddity.
It is better to follow the lead of other XML defaults, by not
outputting anything during format if post-parse defaults have not been
applied, and rejecting the default value during parsing. The testsuite
needs a bit of an update, by adding another flag for when to simulate
a post-parse action of setting a snapshot state, but none of the
drivers are impacted other than rejecting XML that was previously
already suspicious in nature.
Similarly, don't expose creation time 0 (for now, only possible if a
user redefined a snapshot to claim creation at the Epoch, but also
happens once setting the creation time is deferred to a post-parse
handler).
This is also a step towards cleaning up snapshot_conf.c to separate
its existing post-parse work (namely, setting the creationTime and
default snapshot name) from the pure parsing work, so that we can get
rid of the testsuite hack of regex filtering of the XML and instead
have more accurate testing of our parser/formatter code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This requires drivers to opt in to handle the raw modelstr
network model, all others will error if a passed in XML value
is not in the model enum.
Enable this feature for libxl/xen/xm and qemu drivers
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Convert the vbox driver to net model enum, which requires adding
enum values for Am79C970A, Am79C973, 82540EM, 82545EM, 82543GC. We
preserve the same casing that vbox historically used for these model
names.
Remove the now unused virDomainNetStrcaseeqModelString
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Convert the vmware/vmx driver to net model enum, which requires
adding enum values for vlance, vmxnet, vmxnet2, and vmxnet3.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
vbox and vmx drivers do net case insensitive net model comparisons,
so for example 'VMXNET3' and 'vmxnet3' and 'VmxNeT3' in the XML will
translate to the same driver configuration. To convert these drivers
to use net model enum, we will need to do case insensitive comparisons
as well.
Essentially we implement virEnumToString, but with case insensitive
comparison. XML will always be formatted with the enum model string
we track internally, but we will accept any case insensitive variant.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This converts the qemu driver to the net model enum, for all
the model values that we have hardcoded for various checks,
which adds e1000e, virtio-transitional, virtio-non-transitional,
usb-net, spapr-vlan, lan9118, smc91c111
Because the qemu driver has historically also allowed the raw
model string onto the qemu command line, this isn't a full
conversion. Unwinding that will require more thought. However
for all new driver code we should be adding explicit enum
values for any model name we have special handling for.
Remove the now unused virDomainNetStreqModelString
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The bhyve driver only works with the virtio and e1000 models,
which we already have in the enum. Some error reporting is
slightly downgraded to avoid some subtle usage of modelstr
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The vz driver only handles three models: virtio, e1000, and rtl8139.
Add enum values for those models, and convert the vz driver to
handling net->model natively
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This adds a network model enum. The virDomainNetDef property
is named 'model' like most other devices.
When the XML parser or a driver calls NetSetModelString, if
the passed string is in the enum, we will set net->model,
otherwise we copy the string into net->modelstr
Add a single example for the 'netfront' xen model, and wire
that up, just to verify it's all working
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We will be adding a 'model' enum in upcoming patches. Rename
the existing value to make the differentiation clear
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
To ease converting the net->model value to an enum, add
the wrapper functions:
virDomainNetGetModelString
virDomainNetSetModelString
virDomainNetStreqModelString
virDomainNetStrcaseeqModelString
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Switch over to use the new API for re-attaching the bridge device
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
In the case of a network with forward=bridge, which has a bridge device
listed, we are capable of setting bandwidth limits but fail to call the
function to register them.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
hostdevs have a link back to the original network device. This is fairly
generic accepting any type of device, however, we don't intend to make
use of this approach in future. It can thus be specialized to network
devices.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The actual network def was updated to save the bridge name back
in 1.2.11:
commit a360912179
Author: Laine Stump <laine@laine.org>
Date: Fri Nov 21 12:20:37 2014 -0500
network: save bridge name in ActualNetDef when actualType==network too
The chance that someone is running libvirt < 1.2.11 and wants
todo a live upgrade to 5.3.0 without a host reboot is essentially
zero. We can thus reasonably drop the back compat code now.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The APIs for allocating/notifying/removing network ports just take
an internal domain interface struct right now. As a step towards
turning these into public facing APIs, add a virNetworkPtr argument
to all of them.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The port allocation APIs are currently called unconditionally for all
types of NIC, but (mostly) only do anything for NICs with type=network.
The exception is the port allocate API which does some validation even
for NICs with type!=network. Relying on this validation is flawed,
however, since the network driver may not even be installed. IOW virt
drivers must not delegate validation to the network driver for NICs
with type != network.
This change allows us to report errors when the virtual network driver
is not registered.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This helps in a scenarios where vCPUs run with a priority that is so high they
might starve the emulator thread. And it also fits with the rest of the
settings.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This will be used later when we want to format emulator scheduler parameters
which don't apply for multiple threads.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This will become useful later when parsing emulatorsched parameters which don't
need the rest of the current function.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Qemu commit 767abe7 ("chardev: forbid 'wait' option with client
sockets") effectively deprecates usage of "wait" with client sockets
starting with qemu 4.0, and earlier versions ignored the value.
Cc: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Failed new gnutls context allocations in virNetTLSContextNew function
results in double free and segfault. Occasional memory leaks may also
occur.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Adrian Brzezinski <redhat@adrb.pl>
We're setting seclabels on unix sockets but never restoring them.
Surprisingly, we are doing so in SELinux driver.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When writing the VMX file from the domain XML, write the firmware key
according to the firmware autoselection. Though, at the moment only
'efi' is supported.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Convert the firmware key to a type of autoselected firmware.
Only the 'efi' firmware is allowed for now, in case the key is present.
It seems VMware (at least ESXi) does not write the key in VMX files when
setting BIOS as firmware.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
The network driver used to reload the firewall rules whenever a dbus
NameOwnerChanged message for org.fedoraproject.FirewallD1 was
received. Presumably at some point in the past this was successful at
reloading our rules after a firewalld restart. Recently though I
noticed that once firewalld was restarted, libvirt's logs would get this
message:
The name org.fedoraproject.FirewallD1 was not provided by any .service files
After this point, no networks could be started until libvirtd itself
was restarted.
The problem is that the NameOwnerChanged message is sent twice during
a firewalld restart - once when the old firewalld is stopped, and
again when the new firewalld is started. If we try to reload at the
point the old firewalld is stopped, none of the firewalld dbus calls
will succeed.
The solution is to check the new_owner field of the message - we
should reload our firewall rules only if new_owner is non-empty (it is
set to "" when firewalld is stopped, and some sort of epoch number
when it is again started).
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When virDBusMessageRead() and virDBusMessageDecode were first added in
commit 834c9c94, they were identical except that virDBusMessageRead()
would unref the message after decoding it.
This difference was eliminated later in commit dc7f3ffc after it
became apparent that unref-ing the message so soon was never the right
thing to do. The two identical functions remained though, with the
tests and virDBus library itself calling the Decode variant, and all
other users calling the Read variant.
This patch eliminates the duplication, switching all users to
virDBusMessageDecode (and moving the nice API documentation comment
from the Read function up to the Decode function).
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for compiling this version was dropped in an earlier commit.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Support for all the 4.x releases was ended by VirtualBox maintainers in
Dec 2015. Even the "newest" 4.3.40 of those is only supported on old
versions of Linux (Ubuntu <= 13.03, RHEL <= 6, SLES <= 11), which are all
discontinued hosts from libvirt's POV.
We can thus reasonably drop all 4.x support from the libvirt VirtualBox
driver.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Since:
commit 9f4e35dc73
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Mon Mar 18 17:31:21 2019 +0000
network: improve error report when firewall chain creation fails
We cache an error when failing to create the top level firewall chains.
This commit failed to account for fact that we may invoke
networkPreReloadFirewallRules() many times while libvirtd is running.
For example when firewalld is restarted.
When this happens the original failure may no longer occurr and we'll
successfully create our top level chains. We failed to clear the cached
error resulting in us failing to start virtual networks.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Spotted by Lintian (manpage-has-bad-whatis-entry tag).
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
We need commit 6280c94f306d in order to fix our generated
man pages.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
My earlier commit be46f61326 was incomplete. It removed caching of
microcode version in the CPU driver, which means the capabilities XML
will see the correct microcode version. But it is also cached in the
QEMU capabilities cache where it is used to detect whether we need to
reprobe QEMU. By missing the second place, the original commit
be46f61326 made the situation even worse since libvirt would report
correct microcode version while still using the old host CPU model
(visible in domain capabilities XML).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Support for kqemu was dropped in libvirt by commit 8e91a400c and even
back then we never set these capabilities when doing QMP probing.
Since no QEMU we aim to support has these, drop them completely.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
In e17d10386 these functions were mistakenly moved into an #ifdef
block, but remained used outside of it leaving the build broken
for platforms where #ifdef evaluated to false.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Model specific registers are a thing only on x86. Also, the
/dev/cpu/0/msr path exists only on Linux and the fallback
mechanism (asking KVM) exists on Linux and FreeBSD only.
Therefore, move the function within #ifdef that checks all
aforementioned constraints and provide a dummy stub for all
other cases.
This fixes the build on my arm box, mingw-* builds, etc.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The NVIDIA V100 GPU has an onboard RAM that is mapped into the
host memory and accessible as normal RAM via an NVLink2 bridge. When
passed through in a guest, QEMU puts the NVIDIA RAM window in a
non-contiguous area, above the PCI MMIO area that starts at 32TiB.
This means that the NVIDIA RAM window starts at 64TiB and go all the
way to 128TiB.
This means that the guest might request a 64-bit window, for each PCI
Host Bridge, that goes all the way to 128TiB. However, the NVIDIA RAM
window isn't counted as regular RAM, thus this window is considered
only for the allocation of the Translation and Control Entry (TCE).
For more information about how NVLink2 support works in QEMU,
refer to the accepted implementation [1].
This memory layout differs from the existing VFIO case, requiring its
own formula. This patch changes the PPC64 code of
@qemuDomainGetMemLockLimitBytes to:
- detect if we have a NVLink2 bridge being passed through to the
guest. This is done by using the @ppc64VFIODeviceIsNV2Bridge function
added in the previous patch. The existence of the NVLink2 bridge in
the guest means that we are dealing with the NVLink2 memory layout;
- if an IBM NVLink2 bridge exists, passthroughLimit is calculated in a
different way to account for the extra memory the TCE table can alloc.
The 64TiB..128TiB window is more than enough to fit all possible
GPUs, thus the memLimit is the same regardless of passing through 1 or
multiple V100 GPUs.
Further reading explaining the background
[1] https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg03700.html
[2] https://www.redhat.com/archives/libvir-list/2019-March/msg00660.html
[3] https://www.redhat.com/archives/libvir-list/2019-April/msg00527.html
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The NVLink2 support in QEMU implements the detection of NVLink2
capable devices by verifying the attributes of the VFIO mem region
QEMU allocates for the NVIDIA GPUs. To properly allocate an
adequate amount of memLock, Libvirt needs this information before
a QEMU instance is even created, thus querying QEMU is not
possible and opening a VFIO window is too much.
An alternative is presented in this patch. Making the following
assumptions:
- if we want GPU RAM to be available in the guest, an NVLink2 bridge
must be passed through;
- an unknown PCI device can be classified as a NVLink2 bridge
if its device tree node has 'ibm,gpu', 'ibm,nvlink',
'ibm,nvlink-speed' and 'memory-region'.
This patch introduces a helper called @ppc64VFIODeviceIsNV2Bridge
that checks the device tree node of a given PCI device and
check if it meets the criteria to be a NVLink2 bridge. This
new function will be used in a follow-up patch that, using the
first assumption, will set up the rlimits of the guest
accordingly.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This does not cause a problem in usual scenarios thanks to us allowing
CAP_DAC_OVERRIDE for the qemu process, however in some scenarios this might be
an issue because the directory is created with mkdtemp(3) which explicitly
creates that with 0700 permissions and qemu running as non-root cannot access
that.
The scenarios include:
- Builds without CAPNG
- Running libvirtd in certain container configurations [1]
- and possibly others.
[1] https://github.com/kubevirt/kubevirt/pull/2181#issuecomment-481840304
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The new virHostCPUGetMSR internal API will try to read the MSR from
/dev/cpu/0/msr and if it is not possible (the device does not exist or
libvirt is running unprivileged), it will fallback to asking KVM for the
MSR using KVM_GET_MSRS ioctl.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
They are static and we will need to call them a little bit closer to the
beginning of the file.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The structure can only be used for CPUID data now. Adding a type
indicator and moving the data into a union will let us store alternative
data types.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function now works on virCPUx86DataItem and it's called
virCPUx86DataItemMatch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is renamed as virCPUx86DataItemMatchMasked to reflect the
change in parameter types.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function now works on virCPUx86DataItem and it's renamed as
virCPUx86DataItemAndBits.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The parameters changed from virCPUx86CPUID to virCPUx86DataItem and the
function is now called virCPUx86DataItemClearBits.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is renamed as virCPUx86DataItemSetBits and it works on
virCPUx86DataItem now.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virCPUx86DataSorter already compares two virCPUx86DataItem structs.
Let's add a tiny wrapper around it called virCPUx86DataCmp and use it
instead of open coded comparisons.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It is called virCPUx86DataSorter since the function will work on any CPU
data type.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is now called virCPUx86DataNext to reflect its purpose: it
is an iterator over CPU data (both CPUID and MSR in the near future).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Although vendor string is always reported by CPUID, the container struct
is used for consistency and thus "cpuid" name is not a good fit anymore.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The following patches introduce CPU features read from MSR in addition
to those queried via CPUID instruction. Let's introduce a container
struct which will be able to describe either feature type.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduced in QEMU 3.1.0 by commit
c7a88b52f62b30c04158eeb07f73e3f72221b6a8
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Vim has trouble figuring out the filetype automatically because
the name doesn't follow existing conventions; annotations like
the ones we already have in Makefile.ci help it out.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Firstly, virCommandRun() does report an error on failure (which
in most cases is more accurate than what we overwrite it with).
Secondly, usually errno is not set (or gets overwritten in the
cleanup code) which makes virReportSystemError() report useless
error messages. Drop all virReportSystemError() calls in cases
like this (I've found three occurrences).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The latter is deprecated and will be removed soon. The advised
replacement is '-overcommit mem-lock=on|off'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Added in QEMU commit of v3.0.0-rc0~48^2~9 (then fixed by
v3.1.0-rc0~119^2~37) QEMU is replacing '-realtime mlock' with
'-overcommit mem-lock'. Add a capability to tell if we're dealing
new new enough qemu to use the replacement.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The '-realtime mlock' cmd line argument was introduced in QEMU
commit v1.5.0-rc0~190 which matches minimal QEMU version we
require. Therefore, the capability will always be present.
Apparently, nearly none of our xml2argv test cases had the
capability hence slightly bigger change under qemuxml2argvdata/.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'bandwidths' variable is allocated using VIR_RESIZE_N so it has to
be freed as well.
==118315== 8 bytes in 1 blocks are definitely lost in loss record 299 of 2,401
==118315== at 0x4C29DAD: malloc (vg_replace_malloc.c:308)
==118315== by 0x4C2C100: realloc (vg_replace_malloc.c:836)
==118315== by 0x52C3FAF: virReallocN (viralloc.c:245)
==118315== by 0x52C4079: virExpandN (viralloc.c:294)
==118315== by 0x532BBA8: virResctrlAllocParseProcessMemoryBandwidth (virresctrl.c:1156)
==118315== by 0x532BBA8: virResctrlAllocParseMemoryBandwidthLine (virresctrl.c:1211)
==118315== by 0x532BBA8: virResctrlAllocParse (virresctrl.c:1414)
==118315== by 0x532BBA8: virResctrlAllocGetGroup (virresctrl.c:1446)
==118315== by 0x532C11D: virResctrlAllocGetDefault (virresctrl.c:1464)
==118315== by 0x532D15E: virResctrlAllocAssign (virresctrl.c:1923)
==118315== by 0x532D15E: virResctrlAllocCreate (virresctrl.c:2042)
==118315== by 0x31E1ABEE: qemuProcessResctrlCreate (qemu_process.c:2596)
==118315== by 0x31E1ABEE: qemuProcessLaunch (qemu_process.c:6444)
==118315== by 0x31E1E341: qemuProcessStart (qemu_process.c:6721)
==118315== by 0x31E81315: qemuDomainObjStart.constprop.50 (qemu_driver.c:7288)
==118315== by 0x31E81A65: qemuDomainCreateWithFlags (qemu_driver.c:7341)
==118315== by 0x54DDB4B: virDomainCreate (libvirt-domain.c:6534)
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
A bunch of files include src/rpc/virnetsaslcontext.h, which
in turn includes <sasl/sasl.h>, and without the corresponding
CFLAGS the compiler can't locate the latter if it happens to
be installed outside of the default include path as is the
case, for example, on FreeBSD.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Standardize on putting the _LAST enum value on the second line
of VIR_ENUM_IMPL invocations. Later patches that add string labels
to VIR_ENUM_IMPL will push most of these to the second line anyways,
so this saves some noise.
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Getting the guest time and hostname both require use of guest agent
commands. These must not be allowed for read-only users, so the
permissions check must validate "write" permission not "read".
Fixes CVE-2019-3886
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virDomainGetHostname API is fetching guest information and this may
involve use of an untrusted guest agent. As such its use must be
forbidden on a read-only connection to libvirt.
Fixes CVE-2019-3886
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Few of the scripts in build-aux are included in EXTRA_DIST. This is not
a serious problem since they are primarily tools intended for developers
upstream, and downstream builds won't need them. Having them missing,
however, complicates downstream patching because it means patches that
are auto-exported from git will fail to apply if they include a change
to a file in build-aux/. By bundling all these scripts in the dist we
make patching more straightforward.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The function open-codes addition into an array. Use the helper instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Demonstrate how VIR_RETURN_PTR is used by refactoring qemu_block.c
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With the introduction of more and more internal data types which support
VIR_AUTOPTR it's becoming common to see the following pattern:
VIR_AUTOPTR(virSomething) some = NULL
virSomethingPtr ret = NULL;
... (ret is not touched ) ...
VIR_STEAL_PTR(ret, some);
return ret;
This patch introduces a macro named VIR_RETURN_PTR which returns the
pointer directly without the need for an explicitly defined return
variable and use of VIR_STEAL_PTR. Internally obviously a temporary
pointer is created to allow setting the original pointer to NULL so that
the VIR_AUTOPTR function does not free the memory which we want to
actually return.
The name of the temporary variable is deliberately long and complex to
minimize the possibility of collision.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a locally used helper struct but we can make use of automatic
freeing for it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 6864d8f740 moved this one level up
for qemuBuildMemoryBackendProps but left qemuBuildMemPathStr intact.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
If a management application wants to use firmware auto selection
feature it can't currently know if the libvirtd it's talking to
support is or not. Moreover, it doesn't know which values that
are accepted for the @firmware attribute of <os/> when parsing
will allow successful start of the domain later, i.e. if the mgmt
application wants to use 'bios' whether there exists a FW
descriptor in the system that describes bios.
This commit then adds 'firmware' enum to <os/> element in
<domainCapabilities/> XML like this:
<enum name='firmware'>
<value>bios</value>
<value>efi</value>
</enum>
We can see both 'bios' and 'efi' listed which means that there
are descriptors for both found in the system (matched with the
machine type and architecture reported in the domain capabilities
earlier and not shown here).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
The point of this API is to fetch all FW descriptors, parse them
and return list of supported interfaces and SMM feature for given
combination of machine type and guest architecture.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
This reverts commit a5e1602090.
Getting rid of unistd.h from our headers will require more work than
just fixing the broken mingw build. Revert it until I have a more
complete proposal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
util/virutil.h bogously included unistd.h. Drop it and replace it by
including it directly where needed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virutil.(c|h) is a very gross collection of random code. Remove the enum
handlers from there so we can limit the scope where virtutil.h is used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'viralloc.h' does not provide any type or macro which would be necessary
in headers. Prevent leakage of the inclusion.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Keeping them with viralloc.h forcibly pulls in the other stuff from
viralloc.h into other header files. This in turn creates a mess
as more and more headers pull in the 'viral' header file.
If we want to make 'viralloc.h' omnipresent we should pick a different
approach.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Define VMX_CONFIG_FORMAT_ARGV to replace the hardcoded 'vmware-vmx'
string used by the domxml-X-native APIs. This follows the pattern used
by other drivers.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Han Han <hhan@redhat.com>
Now that the memory disposal is handled automatically we can simplify
the cleanup paths. In this case it's not as simple as sometimes the
value of the called function is returned.
While at it fix the initialization value of the returned variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit fixes an unitialized variable to avoid garbage value
when virNetDevBridgeGet method returns error. When, that method fails
before initialize 'val' variable, it can cause problems related to
that.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit b647d2195 introduced a use-after-free situation when the caller
is trying to delete a snapshot and its children: if the callback
function deletes the parent, it is no longer safe to query the parent
to learn which children also need to be deleted (where we previously
saved deleting the parent for last). To fix the problem, while still
maintaining support for topological visits of callback functions, we
have to stash off any information needed for later traversal prior to
using a callback function (virDomainMomentForEachChild already does
this, it is only virDomainMomentActOnDescendant that was running into
problems).
Sadly, the testsuite did not cover the problem at the time. Worse,
even though I later added commit 280a2b41e to catch problems like
this, and even though that test is indeed sufficient to detect the
problem when run under valgrind or suitable MALLOC_PERTURB_ settings,
I'm guilty of not running the test in such an environment. Thus,
v5.2.0 has a regression that could have been prevented had we used the
testsuite to its full power. On the bright side, deleting snapshots
requires ACL domain:snapshot, which is arguably as powerful as
domain:write, so I don't think this use-after-free forms a security
hole.
At some point, it would be nice to convert virDomainMomentObj into a
virObject, at which point, the solution is even simpler: add
virObjectRef/Unref around the callback. But as that will require
auditing even more places in the code, I went with the simplest patch
for the regression fix.
Fixes: b647d2195
Reported-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Tested-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
A feature with no cpuid element is invalid and it should not be silently
treated as a feature with all CPUID bits set to zero.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The microcode version checks are used to invalidate cached CPU data we
get from QEMU. To minimize /proc/cpuinfo parsing the microcode version
was only read when libvirtd started and cached for the daemon's
lifetime. However, the CPU microcode can change anytime (updating the
microcode package can automatically upload it to the CPU) and we need to
stop caching it to avoid using stale CPU model data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This helper has solely to do with virObjects. Move it together with
other virObject stuff.
This also avoids the potential problem where VIR_AUTOUNREF uses
virObjectAutoUnref which is defined in virobject.h.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The rules are the same for all virt guests, regardless of the
architecture.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Our PCIe topology depends on the availability of PCIe Root Ports,
so if none of the suitable devices (pcie-root-port, ioh3420) is
compiled into QEMU we should fall back to virtio-mmio rather than
trying to use PCI addresses only to fail immediately afterwards
when we realize we can't use the necessary controllers.
Note that this additional check is basically moot for ARM virt
guests, because PCIe Root Ports were enabled in QEMU builds for
the architecture well before guest OS support had been widely
available; however, the opposite is true for RISC-V, and tweaking
the code this way will allow us to share it between architectures.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Since the STOP event handler can use the pausedReason as sent to
qemuProcessStopCPUs, we no longer need to send duplicate suspended
lifecycle events because we know what caused the stop along with extra
details. This processing allows us to also remove the duplicated state
change from qemuProcessStopCPUs.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Map is based on existing cases in code where we send suspended
event after changing domain state to paused.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Similar to commit [1] which saves and passes the running reason to
the RESUME event handler, during qemuProcessStopCPUs let's save and pass
the pause reason in the domain private data so that the STOP event
handler can use it.
[1] 5dab984ed : qemu: Pass running reason to RESUME event handler
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
If there are two concurrent threads, one of which is removing an
nwfilter from the list and the other is trying to add it back they
may serialize in the following order:
1) obj->removing is set and @obj is unlocked.
2) The tread that's trying to add the nwfilter onto the list locks
the list and tries to find, if the nwfilter already exists.
3) Our lookup functions say it doesn't, so the thread proceeds to
virHashAddEntry() which fails with 'Duplicate key' error.
This is obviously not helpful error message at all.
The problem lies in our lookup function
(virNWFilterBindingObjListFindByPortDevLocked()) which return
NULL even if the object is still on the list. They do this so
that the object is not mistakenly looked up by some API. The fix
consists of moving 'removing' check one level up and thus
allowing virNWFilterBindingObjListAddLocked() to produce
meaningful error message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
If there are two concurrent threads, one of which is removing a
domain from the list and the other is trying to add it back they
may serialize in the following order:
1) vm->removing is set and @vm is unlocked.
2) The tread that's trying to add the domain onto the list locks
the list and tries to find, if the domain already exists.
3) Our lookup functions say it doesn't, so the thread proceeds to
virHashAddEntry() which fails with 'Duplicate key' error.
This is obviously not helpful error message at all.
The problem lies in our lookup functions
(virDomainObjListFindByUUIDLocked() and
virDomainObjListFindByNameLocked()) which return NULL even if the
object is still on the list. They do this so that the object is
not mistakenly looked up by some driver. The fix consists of
moving 'removing' check one level up and thus allowing
virDomainObjListAddLocked() to produce meaningful error message.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Parsing of the cpu affinity list was using virParseNumber. Modernize it
to get rid of the virParseNumber call.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1693066
Up until memfd introduction (in 24b74d187c) we did not need to
know @pagesize because qemuGetDomainHupageMemPath() could deal
with it being zero (value of zero means use the default hugetlbfs
mount). But since for memfd we are not passing a path to
hugetlbfs mount rather the page size value we need to know its
value upfront.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This helper returns the default hugetlbfs mount point from given
array of mount points.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since commit 66460e3 dropped support for YAJL 1, we no longer need
these.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Now that we do not need to cater to YAJL 1, move the check for the
return value of yajl_gen_alloc earlier, so that we can assume it
was successful in later code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Now that we require YAJL2, drop the code dealing with YAJL 1.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
qemuMigrationSrcPerform callers expect it to call virDomainObjEndAPI
in any case so on error paths we miss the virDomainObjEndAPI call.
To fix this let's make qemuMigrationSrcPerform callers responsible
for the virDomainObjEndAPI call.
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
The d_type field cannot be assumed to be filled. Some filesystems, such
as older XFS, will simply report DT_UNKNOWN.
Even if the d_type is filled in, the use of it in the SELinux functions
is dubious. If labelling all files in a directory there's no reason to
skip things which are not regular files. We merely need to skip "." and
"..", which is done by virDirRead() already.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
d_type is a non-portable extension to the struct dirent and even if it
exists, its value may be DT_UNKNOWN if the filesystem doesn't support
it. This is common with older versions of XFS which have ftype=0
feature.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Use virJSONValueToBuffer so that we can append the command terminator
string without copying of the string again. Also avoid a 'strlen' as we
can query the buffer use size.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
The internal qemu machinery already logs the sent message via the PROBE
point in qemuMonitorSend and the monitor receive function. Those are way
better as they are easy grepable. Remove the additional ones from the
monitor code which just duplicate the sent data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
We have tests that validate the XML formatter. Additionally almost every
guide tells users to disable JSON logging. Drop logging of output string
in virJSONValueToString.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
The last step of the conversion involves copying of the generated JSON
into a separate string. We can use a virBuffer to do this as this will
also allow to subsequently use the buffer when we actually need to do
some other formatting of the string.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Use size_t for all sizes. The '*' modifier unfortunately does require an
int so a temporary variable is necessary in the tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
This was meant to stop abusing the members directly, but we don't do
this for other internal structs. Additionally this did not stop the
test from touching the members. Remove the header obscurization.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refactor code paths which clear strings on cleanup paths to use the
automatic helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
VIR_AUTODISPOSE_STR is similar to VIR_AUTOFREE(char *) but uses
virDispose for clearing of the stored string.
This patch also refactors VIR_DISPOSE to use the new helper which is
used for the new macro.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'blockdev-snapshot-sync' is present in QEMU since v0.14.0-rc0 and
'transaction' since v1.1.0 (52e7c241ac766406f05fa)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemu added the 'drive-mirror' command in v1.3.0 (d9b902db3fb71fdc)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemu added the 'block-commit' command in v1.3.0 (ed61fc10e8c8d2)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This was detected by the presence of 'block-stream' which is present in
qemu since v1.1 (db58f9c0605fa151b8c4)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to the disk source we need to keep the disk index (which is in
the qemu driver used for identification of the source for block jobs)
for the <mirror> element so that when it's replaced as a disk source
after pivoting all the allocated data is present.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When the block copy operation is started with a reused external file in
incremental mode libvirt will need to open and insert the backing chain
for that file into qemu (in -blockdev mode). This means that we'll need
to track the backing chain and metadata such as node names for the full
chain of <mirror>.
This patch invokes the full backing chain formatter and parser for
<mirror> so that the chain can be kept with <mirror>.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We have the proper flags available so we can pass them to the fomatter.
The added bonus is that private data may be formatted into the status
XML.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The helper converts the 'type', 'format' and index values to enum
values/numbers and does validation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virDomainDiskSourceParse was now just a thin wrapper without any extra
value. Replace all usage of it by the function it calls and remove the
function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify the check that the format is in range to be standalone and use
the convertor function directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the cleanup is handled automatically it can be removed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When adding <migrationSource> I've used a slightly unusual approach. To
allow using the disk source XML parser and formatter convert
<migrationSource> to look like <disk>. This means that <source> will be
added as a subelement of <migrationSource> rather than being formatted
inline.
Conversion from the old format in the parser is very simple as it
involves only moving the XPath context current node slightly if the new
format is found.
The status XML to XML test shows that the upgrade is done correctly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All callers including transitive callers through
virDomainDiskSourceFormatInternal always pass true. Remove the argument.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We parse the seclabels and use them internally so omitting them when
formatting would be misleading. Additionally our schema actually allows
them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Using copy_on_read for removable disks is a hassle. It also does not
work for CDROMs at all as the image is supposed to be read-only and we
might ignore it for floppies when they are started as empty. Forbid it
for floppies completely rather than trying to support what probably
nobody is using.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Until the block job completes we can't change the disk chain. Removal
would fail as the block job still has reference to the chain.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unref the config pointer automatically in code paths which get a local
copy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainChangeGraphicsPasswords and qemuDomainRemoveHostDevice
don't use 'cfg' any more since commits 4327df7eee and 802c59d4b9
respectively.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Failure of qemuMonitorGetVersion is fatal now that we only support QMP
based qemus. Remove the debug message since we report an error already.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
If the detected qemu version is below our required version 'package'
would be leaked.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Move the check out of virQEMUCapsInitQMPMonitor similarly to other
functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Move the code out of virQEMUCapsInitQMPMonitor similarly to other
functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Move the check out of virQEMUCapsInitQMPMonitor similarly to other
functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Some caps are cleared according to some more advanced logic after
detection. Split all that logic out into virQEMUCapsInitProcessCaps.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
virQEMUCapsInitQMPMonitor is massive now since it collects calls to the
various probing functions and also version based capabilities. Split
out the version based caps into a separate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add hppa, nios2, or1k, riscv32 and riscv64 to the profile.
Fixes: https://bugs.debian.org/914940
Signed-off-by: intrigeri <intrigeri@boum.org>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Check that the attribute is the same in qemuDomainDiskChangeSupported
in case somebody tries to change it using the UpdateDevice API.
https://bugzilla.redhat.com/show_bug.cgi?id=1601677
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
https://bugzilla.redhat.com/show_bug.cgi?id=1601677
This reverts commit 047cfb05ee
Using numeric comparison on strings means we reject every update
that does include the group name, even if it's unchanged.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Even though Coverity can prove that 'last' is always set if the prior
loop executed, gcc 8.0.1 cannot:
CC conf/libvirt_conf_la-virdomainmomentobjlist.lo
../../src/conf/virdomainmomentobjlist.c: In function 'virDomainMomentMoveChildren':
../../src/conf/virdomainmomentobjlist.c:178:19: error: 'last' may be used uninitialized in this function [-Werror=maybe-uninitialized]
last->sibling = to->first_child;
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
Rewrite the loop to a form that should be easier for static analysis
to work with.
Fixes: ced0898f86
Reported-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
commit edaf13565 modified the stats retrieval for OVS interfaces to
not fail when one of the fields was unrecognized by the ovs-vsctl
command, but ovs-vsctl was still returning an error, and libvirt was
cluttering the logs with these inconsequential error messages.
This patch modifies the GET_STAT macro to add "--if-exists" to the
ovs-vsctl command, which causes it to return an empty string (and exit
with success) if the requested statistic isn't in its database, thus
eliminating the ugly error messages from the log.
Resolves: https://bugzilla.redhat.com/1683175
Signed-off-by: Laine Stump <laine@laine.org>
The warning is reported at a code path which already reports a proper
error so it's pointless to add yet another line into logs.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Avoid the extra parameter passing in the disk 'dst' parameter to be
reported instead of the device alias. Using 'dst' instead of alias does
not add much value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainRemoveDiskDevice calls qemuDomainReleaseDeviceAddress which
already calls virDomainUSBAddressRelease so we don't need to call it
again.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
There is one specific caller (testInfoSetArgs() in
qemuxml2argvtest.c) which expect the va_list argument to change
after returning from the virQEMUCapsSetVAList() function.
However, since we are passing plain va_list this is not
guaranteed. The man page of stdarg(3) says:
If ap is passed to a function that uses va_arg(ap,type), then
the value of ap is undefined after the return of that function.
(ap is a variable of type va_list)
I've seen this in action in fact: on i686 the qemuxml2argvtest
fails on the second test case because testInfoSetArgs() sees
ARG_QEMU_CAPS and calls virQEMUCapsSetVAList to process the
capabilities (in this case there's just one
QEMU_CAPS_SECCOMP_BLACKLIST). But since the changes are not
reflected in the caller, in the next iteration testInfoSetArgs()
sees the QEMU capability and not ARG_END.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 6b90a84738.
It turns out gcc -O2 is not happy with it, complaining:
/home/pipo/libvirt/src/qemu/qemu_driver.c: In function 'qemuDomainSnapshotCreateXML':
/home/pipo/libvirt/src/qemu/qemu_driver.c:15389:26: error: potential null pointer dereference [-Werror=null-dereference]
bool memory = snapdef->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL;
~~~~~~~^~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15389:26: error: potential null pointer dereference [-Werror=null-dereference]
In file included from /home/pipo/libvirt/src/util/virbuffer.h:27,
from /home/pipo/libvirt/src/conf/capabilities.h:27,
from /home/pipo/libvirt/src/conf/domain_conf.h:32,
from /home/pipo/libvirt/src/qemu/qemu_agent.h:26,
from /home/pipo/libvirt/src/qemu/qemu_driver.c:40:
/home/pipo/libvirt/src/util/viralloc.h:125:34: error: potential null pointer dereference [-Werror=null-dereference]
# define VIR_ALLOC_N(ptr, count) virAllocN(&(ptr), sizeof(*(ptr)), (count), true, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
VIR_FROM_THIS, __FILE__, __FUNCTION__, __LINE__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15103:9: note: in expansion of macro 'VIR_ALLOC_N'
if (VIR_ALLOC_N(ret, snapdef->ndisks) < 0)
^~~~~~~~~~~
/home/pipo/libvirt/src/qemu/qemu_driver.c:15798:45: error: null pointer dereference [-Werror=null-dereference]
virDomainSnapshotObjGetDef(snap)->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
As the patch simplified one or two callers at the risk of making
many other callers now candidates to trigger aggressive compiler
warnings, it isn't worth it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Use the common base class virDomainMoment for iterator callbacks
related to snapshots from the qemu code, so that when checkpoint
operations are introduced, they can share the same callbacks.
Simplify the code for qemuDomainSnapshotCurrent by better utilizing
virDomainMoment helpers.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The qemu driver already had a full-blown virDomainMomentObjPtr to
check against, and the test driver ought to have one since we get
better error checking that the user passed in a valid object. Removes
the need for a helper function added in commit commit 4819f54b.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The VIR_MIGRATE_PARALLEL flag is implemented using QEMU's multifd
migration capability and the corresponding multifd-channels migration
parameter.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Prepare for introducing a bunch of new public APIs related to
backup checkpoints by first introducing a new internal type
and errors associated with that type. Checkpoints are modeled
heavily after virDomainSnapshotPtr (both represent a point in
time of the guest), although a snapshot exists with the intent
of rolling back to that state, while a checkpoint exists to
make it possible to create an incremental backup at a later
time.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since I was copying this text to form checkpoint XML and API
documentation, I might as well make improvements along the way. Most
of these changes are based on reviews of the checkpoint docs.
Among other things: grammar tweaks, point to a single source of
documentation rather than repeating verbosity, reword things for
easier legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 86c0ed6f70, and
subsequent refactorings of the function into new files. There are no
callers of this function - I had originally proposed it for
implementing a new bulk snapshot API, but that proved to be too
invasive given RPC limits. I also tried using it for streamlining how
the qemu driver stores snapshot state across libvirtd restarts
internally, but in the end, the risks of a new internal format
outweighed the benefits of one file per snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 1b57269cbc, and
subsequent refactorings of the function into new files. There are no
callers of this function - I had originally proposed it for
implementing a new bulk snapshot API, but that proved to be too
invasive given RPC limits. I also tried using it for streamlining how
the qemu driver stores snapshot state across libvirtd restarts
internally, but in the end, the risks of a new internal format
outweighed the benefits of one file per snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
For [some unknown reason, possibly/probably pure chance], Net devices
have been taken offline and their bandwidth tc rules cleared as the
very first operation when detaching the device. This is contrary to
every other type of device, where all hostside teardown is delayed
until we receive the DEVICE_DELETED event back from qemu, indicating
that the guest has finished with the device.
This patch delays these two operations until receipt of
DEVICE_DELETED, which removes an ugly wart from
qemuDomainDetachDeviceLive(), and also seems to be a more correct
sequence of events.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event is sent after qemu has
responded to a device_del command with a DEVICE_DELETED event. Before
queuing the event, *some* of the final teardown of the device's
trappings in libvirt is done, but not *all* of it. As a result, an
application may receive and process the DEVICE_REMOVED event before
libvirt has really finished with it.
Usually this doesn't cause a problem, but it can - in the case of the
bug report referenced below, vdsm is assigning a PCI device to a guest
with managed='no', using livirt's virNodeDeviceDetachFlags() and
virNodeDeviceReAttach() APIs. Immediately after receiving a
DEVICE_REMOVED event from libvirt signalling that the device had been
successfully unplugged, vdsm would cal virNodeDeviceReAttach() to
unbind the device from vfio-pci and rebind it to the host driverm but
because the event was received before libvirt had completely finished
processing the removal, that device was still on the "activeDevs"
list, and so virNodeDeviceReAttach() failed.
Experimentation with additional debug logs proved that libvirt would
always end up dispatching the DEVICE_REMOVED event before it had
removed the device from activeDevs (with a *much* greater difference
with managed='yes', since in that case the re-binding of the device
occurred after queuing the device).
Although the case of hostdev devices is the most extreme (since there
is so much involved in tearing down the device), *all* device types
suffer from the same problem - the DEVICE_REMOVED event is queued very
early in the qemuDomainRemove*Device() function for all of them,
resulting in a possibility of any application receiving the event
before libvirt has really finished with the device.
The solution is to save the device's alias (which is the only piece of
info from the device object that is needed for the event) at the
beginning of processing the device removal, and then queue the event
as a final act before returning. Since all of the
qemuDomainRemove*Device() functions (except
qemuDomainRemoveChrDevice()) are now called exclusively from
qemuDomainRemoveDevice() (which selects which of the subordinates to
call in a switch statement based on the type of device), the shortest
route to a solution is to doing the saving of alias, and later
queueing of the event, in the higher level qemuDomainRemoveDevice(),
and just completely remove the event-related code from all the
subordinate functions.
The single exception to this, as mentioned before, is
qemuDomainRemoveChrDevice(), which is still called from somewhere
other than qemuDomainRemoveDevice() (and has a separate arg used to
trigger different behavior when the chr device has targetType ==
GUESTFWD), so it must keep its original behavior intact, and must be
treated differently by qemuDomainRemoveDevice() (similar to the way
that qemuDomainDetachDeviceLive() treats chr and lease devices
differently from all the others).
Resolves: https://bugzilla.redhat.com/1658198
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Now that all the qemuDomainDetachPrep*() functions look nearly
identical at the end, we can put one copy of that identical code in
qemuDomainDetachDeviceLive() at the point after the individual prep
functions have been called, and remove the duplicated code from all
the prep functions. The code to locate the target "detach" device
based on the "match" device remains, as do all device-type-specific
validations.
Unfortunately there are a few things going on at once in this patch,
which makes it a bit more difficult to follow than the others; it was
just impossible to do the changes in stages and still have a
buildable/testable tree at each step.
The other changes of note:
* The individual prep functions no longer need their driver or async
args, so those are removed, as are the local "ret" variables, since
in all cases the functions just directly return -1 or 0.
* Some of the prep functions were checking for a valid alias and/or
for attempts to detach a multifunction PCI device, but not all. In
fact, both checks are valid (or at least harmless) for *all* device
types, so they are removed from the prep functions, and done a
single time in the common function.
(any attempts to *create* an alias when there isn't one has been
removed, since that is doomed to failure anyway; the only way the
device wouldn't have an alias is if 1) the domain was created by
calling virsh qemu-attach to attach an existing qemu process to
libvirt, and 2) the qemu command that started said process used "old
style" arguments for creating devices that didn't have any device
ids. Even if we constructed a device id for one of these devices,
qemu wouldn't recognize it in the device_del command anyway, so we
may as well fail earlier with "device missing alias" rather than
failing later with "couldn't delete device net0".)
* Only one type of device has shutdown code that must not be called
until after *all* validation of the device is done (including
checking for multifunction PCI and valid alias, which is done in the
toplevel common code). For this reason, the Net function has been
split in two, with the 2nd half (qemuDomainDetachShutdownNet())
called from the common function, right before sending the delete
command to qemu.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Although all hotpluggable devices other than lease, controller,
watchdof, and vsock can be audited, and *are* audited when an unplug
is successful, only disk, net, and hostdev were actually being audited
on failure.
This patch corrects that omission.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function can be called with a virDomainDevicePtr and whether or
not the removal was successful, and it will call the appropriate
virDomainAudit*() function with the appropriate args for whatever type
of device it's given (or do nothing, if that's appropriate). This
permits generalizing some code that currently has a separate copy for
each type of device.
NB: Although the function initially will be called only with
success=false, that has been made an argument so that in the future
(when the qemuDomainRemove*Device() functions have had their common
functionality consolidated into qemuDomainRemoveDevice()), this new
common code can call qemuDomainRemoveAuditDevice() for all types.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceChr and qemuDomainDetachDeviceLease are more
consistent with each other.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Most of these functions will soon contain only some setup for
detaching the device, not the detach code proper (since that code is
identical for these devices). Their device specific functions are all
being renamed to qemuDomainDetachPrep*(), where * is the
name of that device's data member in the virDomainDeviceDef
object.
Since there will be other code in qemuDomainDetachDeviceLive() after
the calls to qemuDomainDetachPrep*() that could still fail, we no
longer directly set "ret" with the return code from
qemuDomainDetachPrep*() functions, but simply return -1 on
failure, and wait until the end of qemuDomainDetachDeviceLive() to set
ret = 0.
Along with the rename, qemuDomainDetachPrep*() functions are also
given similar arglists, including an arg called "match" that points to
the proto-object of the device we want to delete, and another arg
"detach" that is used to return a pointer to the actual object that
will be (for now *has been*) detached. To make sure these new args
aren't confused with existing local pointers that sometimes had the
same name (detach), the local pointer to the device is now named after
the device type ("controller", "disk", etc). These point to the same
place as (*detach)->data.blah, it's just easier on the eyes to have,
e.g., "disk->dst" rather than "(*detach)->data.disk-dst".
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The Chr and Lease devices have detach code that is too different from
the other device types to handle with common functionality (which will
soon be added at the end of qemuDomainDetachDeviceLive(). In order to
make this difference obvious, move the cases for those two device
types to the top of the switch statement in
qemuDomainDetachDeviceLive(), have the cases return immediately so the
future common code at the end of the function will be skipped, and
also include some hopefully helpful comments to remind future
maintainers why these two device types are treated differently.
Any attempt to detach an unsupported device type should also skip the
future common code at the end of the function, so the case for
unsupported types is similarly changed from a simple break to a return
-1.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
I'm about to add a second virDomainDeviceDef to this function that
will point to the actual device in the domain object. while this is
just a partially filled-in example of what to look for. Naming it
match will make the code easier to follow.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
These are no longer called from qemu_driver.c, since the function that
called them (qemuDomainDetachDeviceLive()) has been moved to
qemu_hotplug.c, and they are no longer called from testqemuhotplug.c
because it now just called qemuDomainDetachDeviceLive() instead of all
the subordinate functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceLive() is called from two places in
qemu_driver.c, and qemuDomainUpdateDeviceList() is called from the
end of qemuDomainDetachDeviceLive(), which is now in qemu_hotplug.c
This patch replaces the single call to qemuDomainUpdateDeviceList()
with two calls to it immediately after return from
qemuDomainDetachDeviceLive(). This is only done if the return from
that function is exactly 0, in order to exactly preserve previous
behavior.
Removing that one call from qemuDomainDetachDeviceList() will permit
us to call it from the test driver hotplug test, replacing the
separate calls to qemuDomainDetachDeviceDiskLive(),
qemuDomainDetachChrDevice(), qemuDomainDetachShmemDevice() and
qemuDomainDetachWatchdog(). We want to do this so that part of the
common functionality of those three functions (and the rest of the
device-specific Detach functions) can be pulled up into
qemuDomainDetachDeviceLive() without breaking the test. (This is done
in the next patch).
NB: Almost certainly this is "not the best place" to call
qemuDomainUpdateDeviceList() (actually, it is provably the *wrong*
place), since it's purpose is to retrieve an "up to date" list of
aliases for all devices from qemu, and if the guest OS hasn't yet
processed the detach request, the now-being-removed device may still
be on that list. It would arguably be better to instead call
qemuDomainUpdateDevicesList() later during the response to the
DEVICE_DELETED event for the device. But removing the call from the
current point in the detach could have some unforeseen ill effect due
to changed timing, so the change to move it into
qemuDomainRemove*Device() will be done in a separate patch (in order
to make it easily revertible in case it causes a regression).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDeviceControllerLive() just checks if the controller
type is SCSI, and then either returns failure, or calls
qemuDomainDetachControllerDevice().
Instead, lets just check for type != SCSI at the top of the latter
function, and call it directly.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function is going to take on some of the functionality of its
subordinate functions, which all live in qemu_hotplug.c.
qemuDomainDetachDeviceControllerLive() is only called from
qemuDomainDetachDeviceLive() (and will soon be merged into
qemuDomainDetachControllerDevice(), which is in qemu_hotplug.c), so
it is also moved.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
They were added in qemu commit 7572150c189c6553c2448334116ab717680de66d
released in v0.14.0.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than hard-coding the snapshot filter bit values into the
generic code, add another layer of indirection: callers must map which
of their public filter bits correspond to supported moment bits, then
pass two separate flags (the ones translated for moment code to
operate on, and the remaining ones for the filter callback to operate
on).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The Attach and Detach Lease functions were together in the middle of
the Detach functions. Put them at the end of their respective
sections, since they behave differently from the other attach/detach
functions (DetachLease doesn't use qemuDomainDeleteDevice(), and is
always synchronous).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
There were two outliers at the end of the file beyond the Vcpu
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It was sitting down in the middle of all the qemuDomainDetach*()
functions. Move it up with the rest of the qemuDomain*Graphics*()
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's now only called from one place, and combining the two functions
highlights the similarity with Detach functions for other device
types.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Back in the bad old days different device types required a different
qemu monitor call to detach them, and so an <interface type='hostdev'>
needed to call the function for detaching hostdevs, while other
<interface> types could be deleted as netdevs.
Times have changed, and *all* device types are detached by calling the
common function qemuDomainDeleteDevice(vm, alias), so we don't need to
differentiate between hostdev interfaces and the others for that
reason.
There are a few other netdev-specific functions called during
qemuDomainDetachNetDevice() (clearing bandwidth limits, stopping the
interface), but those turn into NOPs when type=hostdev, so they're
safe to call for type=hostdev.
The only thing that is different + not a NOP is the call to
virDomainAudit*() when qemuDomainDeleteDevice() fails, so if we add a
conditional for that small bit of code, we can eliminate the callout
from qemuDomainDetachNetDevice() to qemuDomainDetachThisDevice(),
which makes this function fit the desired pattern for merging with the
other detach functions, and paves the way to simplifying
qemuDomainDetachHostDevice() too.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachDiskDevice() is only called from one place. Moving the
contents of the function to that place makes
qemuDomainDetachDiskLive() more similar to the other Detach functions
called by the toplevel qemuDomainDetachDevice().
The goal is to make each of the device-type-specific functions do this:
1) find the exact device
2) do any device-specific validation
3) do general validation
4) do device-specific shutdown (only needed for net devices)
5) do the common block of code to send device_del to qemu, then
optionally wait for a corresponding DEVICE_DELETED event from
qemu.
with the final aim being that only items 1 & 2 will remain in each
device-type-specific function, while 3 & 5 (which are the same for
almost every type) will be de-duplicated and moved to the toplevel
function that calls all of these (qemuDomainDetachDeviceLive(), which
will also contain a callout to the one instance of (4) (netdev).
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
qemuDomainDetachHostDevice() has a check at the end that calls
qemuDomainDetachNetDevice() in the case that the hostdev is actually a
Net device of type='hostdev'. A long time ago when device removal was
(supposedly but not actually) synchronous, this would cause some extra
code to be run prior to removing the device (e.g. restoring the original MAC
address of the device, undoing some sort of virtual port profile, etc).
For quite awhile now the device removal has been asynchronous, so that
"extra teardown" isn't handled by the detach function, but instead is
handled by the Remove function called at a later time. The result is
that when we call qemuDomainDetachNetDevice() from
qemuDomainDetachHostDevice(), it ends up just calling
qemuDomainDetachThisHostDevice() and returning, which is exactly what
we do for all other hostdevs anyway.
Based on that, remove the behavioral difference when parent.type ==
VIR_DOMAIN_DEVICE_NET, and just call qemuDomainDetachThisHostDevice()
for all hostdevs.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
There are separate Detach functions for PCI, USB, SCSI, Vhost, and
Mediated hostdevs, but the functions are all 100% the same code,
except that the PCI function checks for the guest side of the device
being a PCI Multifunction device, while the other 4 check that the
device's alias != NULL.
The check for multifunction PCI devices should be done for *all*
devices that are connected to the PCI bus in the guest, not just PCI
hostdevs, and qemuIsMultiFunctionDevice() conveniently returns false
if the queried device doesn't connect with PCI, so it is safe to make
this check for all hostdev devices. (It also needs to be done for many
other device types, but that will be addressed in a future patch).
Likewise, since all hostdevs are detached by calling
qemuDomainDeleteDevice(), which requires the device's alias, checking
for a valid alias is a reasonable thing for PCI hostdevs too.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Having an InfoPtr named "dev" made my brain hurt. Renaming it to
"info" gives one less thing to confuse when looking at the code.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
When support for hotplug/unplug of SCSI controllers was added way back
in December 2009 (commit da9d937b), unplug was handled by calling the
now-extinct function qemuMonitorRemovePCIDevice(), which required a
PCI address as an argument. At the same time, the idea of every device
in the config having a PCI address apparently was not yet fully
implemented, because the author of the patch including a check for a
valid PCI address in the device object.
These days, all PCI devices are guaranteed to have a valid PCI
address. But more important than that, we no longer detach devices by
PCI address, but instead use qemuDomainDeleteDevice(), which
identifies the device by its alias. So checking for a valid PCI
address is just pointless extra code that obscures the high level of
similarity between all the individual qemuDomainDetach*Device()
functions.
Signed-off-by: Laine Stump <laine@laine.org>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuDomainRemoveRNGDevice() calls qemuDomainDetachExtensionDevice().
According to commit 1d1e264f1 that added this code, it should not be
necessary to explicitly remove the zPCI extension device for a PCI
device during unplug, because "QEMU implements an unplug callback
which will unplug both PCI and zPCI device in a cascaded way". In
fact, no other devices call qemuDomainDetachExtensionDevice() during
their qemuDomainRemove*Device() function, so it should be removed from
qemuDomainRemoveRNGDevice as well.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
qemuDomainDetachControllerDevice() calls
qemuDomainDetachExtensionDevice() when the controller type is
PCI. This is incorrect in multiple ways:
* Any code that tears down a device should be in the
qemuDomainRemove*Device() function (which is called after libvirt
gets a DEVICE_DELETED event from qemu indicating that the guest is
finished with the device on its end. The qemuDomainDetach*Device()
functions should only contain code that ensures the requested
operation is valid, and sends the command to qemu to initiate the
unplug.
* qemuDomainDetachExtensionDevice() is a function that applies to
devices that plug into a PCI slot, *not* necessarily PCI controllers
(which is what's being checked in the offending code). The proper
way to check for this would be to see if the DeviceInfo for the
controller device had a PCI address, not to check if the controller
is a PCI controller (the code being removed was doing the latter).
* According to commit 1d1e264f1 that added this code (and other
support for hotplugging zPCI devices on s390), it's not necessary to
explicitly detach the zPCI device when unplugging a PCI device. To
quote:
There's no need to implement hot unplug for zPCI as QEMU
implements an unplug callback which will unplug both PCI and
zPCI device in a cascaded way.
and the evidence bears this out - all the other uses of
qemuDomainDetachExtensionDevice() (except one, which I believe is
also in error, and is being removed in a separate patch) are only to
remove the zPCI extension device in cases where it was successfully
added, but there was some other failure later in the hotplug process
(so there was no regular PCI device to remove and trigger removal of
the zPCI extension device).
* PCI controllers are not hot pluggable, so this is dead code
anyway. (The only controllers that can currently be
hotplugged/unplugged are SCSI controllers).
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Commit 55c2ab3e accidentally introduced an infinite loop while
checking whether a redefined snapshot would cause an infinite loop in
chasing its parents back to a root. Alas, 'make check' did not catch
it, so my next patch will be a testsuite improvement that would have
hung and prevented the bug from being checked in to begin with.
Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
In a case where we want to hotplug the following disk:
<disk type='file' device='disk'>
(...)
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
In a QEMU guest that has a single OS disk, as follows:
<disk type='file' device='disk'>
(...)
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
What happens is that the existing guest disk will receive the ID
'scsi0-0-0-0' due to how Libvirt calculate the alias based on
the address in qemu_alias.c, qemuAssignDeviceDiskAlias. When hotplugging
a disk that happens to have the same address, Libvirt will calculate
the same ID to it and attempt to device_add. QEMU will refuse it:
$ virsh attach-device ub1810 hp-disk-dup.xml
error: Failed to attach device from hp-disk-dup.xml
error: internal error: unable to execute QEMU command 'device_add': Duplicate ID 'scsi0-0-0-0' for device
And Libvirt follows it up with a cleanup code in qemuDomainAttachDiskGeneric
that ends up removing what supposedly is a faulty hotplugged disk but, in
this case, ends up being the original guest disk.
This patch adds an address verification for all attached devices, avoid
calling the driver attach() function using a device with duplicated address.
The change is done in virDomainDefCompatibleDevice when @action is equal
to VIR_DOMAIN_DEVICE_ACTION_ATTACH. The affected callers are:
- qemuDomainAttachDeviceLiveAndConfig, both LIVE and CONFIG cases;
- lxcDomainAttachDeviceFlags, both LIVE and CONFIG.
The check is done using the virDomainDefHasDeviceAddress, a generic
function that can check address duplicates for all supported device
types, not limiting just to DeviceDisk type.
After this patch, this is the result of the previous attach-device call:
$ ./run tools/virsh attach-device ub1810 hp-disk-dup.xml
error: Failed to attach device from hp-disk-dup.xml
error: Requested operation is not valid: Domain already contains a device with the same address
Reported-by: Srikanth Aithal <bssrikanth@in.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This functions tries to add a domain moment (love the name!) onto
a list of domain moments. Firstly, it checks if another moment
with the same name already exists. Then, it creates an empty
moment (without initializing its definition) and tries to add the
moment onto the list dereferencing moment definition in that
process. If it succeeds (which it never can), only after that it
sets moment->def.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 3bd4ed46 introduced this element as required which
breaks backcompat for test driver. Let's make the element optional.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Commit d1a7c08eb changed filter instantiation code to ignore MAC and IP
variables explicitly specified for filter binding. It just replaces
explicit values with values associated with the binding. Before the
commit virNWFilterCreateVarsFrom was used so that explicit value
take precedence. Let's bring old behavior back.
This is useful. For example if domain has two interfaces it makes
sense to list both mac adresses in MAC var of every interface
filterref. So that if guest make a bond of these interfaces
and start sending frames with one of the mac adresses from
both interfaces we can pass outgress traffic from both
interfaces too.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Now that the generic moment code does pretty much everything that both
snapshots and checkpoints will need, it's time to replace the
now-duplicate code in virdomainsnapshotobjlist.c with simpler calls
into the generic code. I considered using sub-classing (a
'virDomainMomentObjList parent;' member, but that requires making the
opaque type visible in headers; so for now, I stuck with a container
instead (a 'virDomainMomentObjListPtr base;' member).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The new code here very heavily resembles the code in
virDomainSnapshotObjList. There are still a couple of spots that are
tied a little too heavily to snapshots (the free function lacks a
polymorphic cleanup until we refactor code to use virObject; and an
upcoming patch will add internal VIR_DOMAIN_MOMENT_LIST flags to
replace the snapshot flag bits), but in general this is fairly close
to the state needed to add checkpoint lists.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that we have made virDomainMomentObj sufficiently generic to
support both snapshots and checkpoints, it is time to rename the file
that it lives in. The split between a generic object and a list of the
generic objects doesn't buy us as much, so it will be easier to stick
all the moment list code in one file, with more code moving in the
next patch. The changes during the move are fairly minor, although it
is worth pointing out that the log/error messages for the new file
report that they are from "domain", since the file will eventually be
shared by both "domain snapshot" and "domain checkpoint".
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Now that the core of SnapshotObj is agnostic to snapshots and can be
shared with upcoming checkpoint code, it is time to rename the struct
and the functions specific to list operations. A later patch will
shuffle which file holds the common code. This is a fairly mechanical
patch.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Another step towards making the object list reusable for both
snapshots and checkpoints: the list code only ever needs items that
are in the common virDomainMomentDef base type. This undoes a lot of
the churn in accessing common members added in the previous patch, and
the bulk of the patch is mechanical. But there was one spot where I
had to unroll a VIR_STEAL_PTR to work around changed types.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Pull out the common parts of virDomainSnapshotDef that will be reused
for virDomainCheckpointDef into a new base class. Adjust all callers
that use the direct fields (some of it is churn that disappears when
the next patch refactors virDomainSnapshotObj; oh well...).
Someday, I hope to switch this type to be a subclass of virObject, but
that requires a more thorough audit of cleanup paths, and besides
minimal incremental changes are easier to review.
As for the choice of naming:
I promised my teenage daughter Evelyn that I'd give her credit for her
contribution to this commit. I asked her "What would be a good name
for a base class for DomainSnapshot and DomainCheckpoint". After
explaining what a base class was (using the classic OOB Square and
Circle inherit from Shape), she came up with "DomainMoment", which is
way better than my initial thought of "DomainPointInTime" or
"DomainPIT".
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Separate the algorithm for which list members to vist (which is
generic and can be shared with checkpoints, provided that common
filtering bits are either declared with the same value or have a
mapping from public API to common value) from the decision on which
members to return (which is specific to snapshots). The typedef for
the callback function feels a bit heavy here, but will make it easier
to move the common portions in a later patch.
As part of the refactoring, note that the macros for selecting filter
bits are specific to listing functionality, so they belong better in
virdomainsnapshotobjlist.h (missed in commit 9b75154c).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
An upcoming patch will rework virDomainSnapshotObjList to be generic
for both snapshots and checkpoints; reduce the churn by adding a new
accessor virDomainSnapshotObjGetDef() which returns the
snapshot-specific definition even when the list is rewritten to
operate only on a base class, then using it at sites that that are
specific to snapshots. Use VIR_STEAL_PTR when appropriate in the
affected lines.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than allowing a leaky abstraction where multiple drivers have
to open-code operations that update the relations in a
virDomainSnapshotObjList, it is better to add accessor functions so
that updates to relations are maintained closer to the internals.
This patch finishes the job started in the previous patch, by getting
rid of all direct access to nchildren, first_child, or sibling outside
of the lowest level functions, making it easier to refactor later on.
The lone new caller to virDomainSnapshotObjListSize() checks for a
return != 0, because it wants to handles errors (-1, only possible if
the hash table wasn't allocated) and existing snapshots (> 0) in the
same manner; we can drop the check for a current snapshot on the
grounds that there shouldn't be one if there are no snapshots.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than allowing a leaky abstraction where multiple drivers have
to open-code operations that update the relations in a
virDomainSnapshotObjList, it is better to add accessor functions so
that updates to relations are maintained closer to the internals.
This patch starts the task with a single new function:
virDomainSnapshotMoveChildren(). The logic might not be immediately
obvious [okay, that's an understatement - the existing code uses black
magic ;-)], so here's an overview: The old code has an implicit for
loop around each call to qemuDomainSnapshotReparentChildren() by using
virDomainSnapshotForEachChild() (you'll need a wider context than
git's default of 3 lines to see that); the new code has a more visible
for loop. Then it helps if you realize that the code is making two
separate changes to each child object: STRDUP of the new parent name
prior to writing XML files (unchanged), and touching up the pointer to
the parent object (refactored); the end result is the same whether a
single pass made both changes (both in driver code), or whether it is
split into two passes making one change each (one in driver code, the
other in the new accessor).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
It is easier to track the current snapshot as part of the list of
snapshots. In particular, doing so lets us guarantee that the current
snapshot is cleared if that snapshot is removed from the list (rather
than depending on the caller to do so, and risking a use-after-free
problem, such as the one recently patched in 1db9d0efbf). This
requires the addition of several new accessor functions, as well as a
useful return type for virDomainSnapshotObjListRemove(). A few error
handling sites that were previously setting vm->current_snapshot =
NULL can now be dropped, because the previous function call has now
done it already. Also, qemuDomainRevertToSnapshot() was setting the
current vm twice, so keep only the one used on the success path.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rework the logic in qemuDomainSnapshotLoad() to set
vm->current_snapshot only once at the end of the loop, rather than
repeatedly querying it during the loop, to make it easier for the next
patch to use accessor functions rather than direct manipulation of
vm->current_snapshot. When encountering multiple snapshots claiming
to be current (based on the presence of an <active>1</active> element
in the XML, which libvirt only outputs for internal use and not for
any public API), this changes behavior from warning only once and
running with no current snapshot, to instead warning on each duplicate
and selecting the last one encountered (which is arbitrary based on
readdir() ordering, but actually stands a fair chance of being the
most-recently created snapshot whether by timestamp or by the
propensity of humans to name things in ascending order).
Note that the code in question is only run by libvirtd when it first
starts, reading state from disk from the previous run into memory for
this run. Since the data resides somewhere that only libvirt should be
touching (typically /var/lib/libvirt/qemu/snapshot/*), it should be
clean. So in the common case, the code touched here is unreachable.
But if someone is actually messing with files behind libvirt's back,
they deserve the change in behavior.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The only use for the 'current' member of virDomainSnapshotDef was with
the PARSE/FORMAT_INTERNAL flag for controlling an internal-use
<active> element marking whether a particular snapshot definition was
current, and even then, only by the qemu driver on output, and by qemu
and test driver on input. But this duplicates vm->snapshot_current,
and gets in the way of potential simplifications to have qemu store a
single file for all snapshots rather than one file per snapshot. Get
rid of the member by adding a bool* parameter during parse (ignored if
the PARSE_INTERNAL flag is not set), and by adding a new flag during
format (if FORMAT_INTERNAL is set, the value printed in <active>
depends on the new FORMAT_CURRENT).
Then update the qemu driver accordingly, which involves hoisting
assignments to vm->current_snapshot to occur prior to any point where
a snapshot XML file is written (although qemu kept
vm->current_snapshot and snapshot->def_current in sync by the end of
the function, they were not always identical in the middle of
functions, so the shuffling gets a bit interesting). Later patches
will clean up some of that confusing churn to vm->current_snapshot.
Note: even if later patches refactor qemu to no longer use
FORMAT_INTERNAL for output (by storing bulk snapshot XML instead), we
will always need PARSE_INTERNAL for input (because on upgrade, a new
libvirt still has to parse XML left from a previous libvirt).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When a future patch converts virDomainSnapshotDef to be a virObject,
we need to be careful that converting VIR_FREE() to virObjectUnref()
does not result in double frees. Reorder the assignment of def into
the object to the point after object is in the hash table (as
otherwise the virHashAddEntry() error path would have a shot at
freeing def prematurely).
Suggested-by: John Ferlan <ferlan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Change the return value of virDomainSnapshotObjListParse() to return
the number of snapshots imported, and allow a return of 0 (the
original proposal of adding a flag to virDomainSnapshotCreateXML
required returning an arbitrary non-NULL snapshot, but that idea was
abandoned; and by returning a count, we are no longer constrained to a
non-empty list).
Document which flags are supported (namely, just SECURE) in
virDomainSnapshotObjListFormat().
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
An upcoming patch will be reworking virDomainSnapshotDef to have a
base class; minimize the churn by using a local variable to reduce the
number of dereferences required when acessing the domain definition
associated with the snapshot.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
And adjust virQEMUCapsSetList to use it. It will also be used in future
patches.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The following virsh command was triggering a use-after-free:
$ virsh -c test:///default '
snapshot-create-as test s1
snapshot-create-as test s2
snapshot-delete --children-only test s1
snapshot-current --name test'
Domain snapshot s1 created
Domain snapshot s2 created
Domain snapshot s1 children deleted
error: name in virGetDomainSnapshot must not be NULL
I got lucky on that run - although the error message is quite
unexpected. On other runs, I was able to get a core dump, and
valgrind confirms there is a definitive problem.
The culprit? We were inconsistent about whether we set
vm->current_snapshot, snap->def->current, or both when updating how
the current snapshot was being tracked. As a result, deletion did not
see that snapshot s2 was previously current, and failed to update
vm->current_snapshot, so that the next API using the current snapshot
failed because it referenced stale memory for the now-gone s2 (instead
of the intended s1).
The test driver code was copied from the qemu code (which DOES track
both pieces of state everywhere), but was purposefully simplified
because the test driver does not have to write persistent snapshot
state to the file system. But when you realize that the only reason
snap->def->current needs to exist is when writing out one file per
snapshot for qemu, it's just as easy to state that the test driver
never has to mess with the field (rather than chasing down which
places forgot to set the field), and have vm->current_snapshot be the
sole source of truth in the test driver.
Ideally, I'd get rid of the 'current' member in virDomainSnapshotDef,
as well as the 'current_snapshot' member in virDomainDef, and instead
track the current member in virDomainSnapshotObjList, coupled with
writing ALL snapshot state for qemu in a single file (where I can use
<snapshots current='...'> as a wrapper, rather than
VIR_DOMAIN_SNAPSHOT_FORMAT_INTERNAL to output <current>1</current> XML
on a per-snapshot file basis). But that's a bigger change, so for now
I'm just patching things to avoid the test driver segfault.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1686927
When trying to create a nwfilter binding via
nwfilterBindingCreateXML() we may encounter a crash. The sequence
of functions called is as follows:
1) nwfilterBindingCreateXML() parses the XML and calls
virNWFilterBindingObjListAdd() which calls
virNWFilterBindingObjListAddLocked()
2) Here, @binding is not found because binding->remove is set.
3) Therefore, controls continue with creating new @binding,
setting its def to the one from 1) and adding it to the hash
table.
4) This fails, because the binding is still in the hash table
(duplicate key is detected).
5) The control jumps to 'error' label where
virNWFilterBindingObjEndAPI() is called which frees the binding
definition passed.
6) Error is propagated to the caller, which calls
virNWFilterBindingDefFree() over the definition again.
The solution is to unset binding->def in case of failure so it's
not freed in step 5).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Storage source private data can be parsed along with other components of
private data rather than a separate function which is called from
multiple places.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virDomainDiskSourcePrivateDataParse and virDomainDiskSourcePRParse don't
need the 'cleanup' label any more thanks to VIR_XPATH_NODE_AUTORESTORE.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function does not have any code in the 'cleanup' label so we can
simplify the control flow.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We can use our VIR_AUTOPTR machinery also for libxml2's xmlDoc and
xmlXPathContext.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In a1c453dc08, during VIR_AUTOFREE() rewrite this wasn't done
properly. @port might be leaked because it's allocated in a for()
loop.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In 669018bc9c I've introduced def->refresh which might be
allocated by virStoragePoolDefRefreshParse() but is never freed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The refresh_volume_allocation variable in
virStoragePoolDefParseXML() has been unused since its
introduction in commit 669018bc9c, and Clang rightfully
complains about this fact.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Use the new refresh volume allocation pool override to skip
computing the actual volume usage if disabled.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The new 'refresh' element can override the default refresh operations
for a storage pool. The only currently supported override is to set
the volume allocation size to the volume capacity. This can be specified
by adding the following snippet:
<pool>
...
<refresh>
<volume allocation='capacity'/>
</refresh>
...
</pool>
This is useful for certain backends where computing the actual allocation
of a volume might be an expensive operation.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The librbd API will transparently revert to a slow disk usage
calculation method if the fast-diff map is marked as invalid.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The unprivileged libvirtd does not have permission to create firewall
rules, or bridge devices, or do anything to the host network in
general. Historically we still activate the network driver though and
let the network start API call fail.
The startup code path which reloads firewall rules on active networks
would thus effectively be a no-op when unprivileged as it is impossible
for there to be any active networks
With the change to use a global set of firewall chains, however, we now
have code that is run unconditionally.
Ideally we would not register the network driver at all when
unprivileged, but the entanglement with the virt drivers currently makes
that impractical. As a temporary hack, we just make the firewall reload
into a no-op.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
During startup libvirtd creates top level chains for both ipv4
and ipv6 protocols. If this fails for any reason then startup
of virtual networks is blocked.
The default virtual network, however, only requires use of ipv4
and some servers have ipv6 disabled so it is expected that ipv6
chain creation will fail. There could equally be servers with
no ipv4, only ipv6.
This patch thus makes error reporting a little more fine grained
so that it works more sensibly when either ipv4 or ipv6 is
disabled on the server. Only the protocols that are actually
used by the virtual network have errors reported.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
During startup we create some top level chains in which all
virtual network firewall rules will be placed. The upfront
creation is done to avoid slowing down creation of individual
virtual networks by checking for chain existance every time.
There are some factors which can cause this upfront creation
to fail and while a message will get into the libvirtd log
this won't be seen by users who later try to start a virtual
network. Instead they'll just get a message saying that the
libvirt top level chain does not exist. This message is
accurate, but unhelpful for solving the root cause.
This patch thus saves any error during daemon startup and
reports it when trying to create a virtual network later.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The rbd_list method has been deprecated in Ceph >= 14.0.0
in favour of the new rbd_list2 method which populates an
array of structs.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The rbd_list method has a quite unpleasant signature returning an
array of strings in a single buffer instead of an array. It is
being deprecated in favour of rbd_list2. To maintain clarity of
code when supporting both APIs in parallel, split the rbd_list
code out into a separate method.
In splitting this we now honour the rbd_list failures.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
After this, newly added enums will not automatically show up in
driver output unless the driver code specifically sets report=true
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Set report=true for all enums currently formatted in the XML
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
virCapsEnum report is an internal bool indicating whether we
should format the enum in the XML at all. This is unused for
now but will be handled in future patches.
We use a plain bool instead of tristate because the case here
is a bit different than the explicit @supported output. We
already report the equivalent of supported=YES|NO based on
what enum values are filled in. This adds report=false to
handle the ABSENT case.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Change domcaps to skip formatting XML if the default
TRISTATE_BOOL_ABSENT is found. Now when domcaps is extended, driver
XML output won't change until an explicit TRISTATE_BOOL value is set
in driver code.
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<hostdev> and <features> are not supported. <loader>, <graphics>,
and <video> are supported conditionally
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
None of the <feature> bits are supported, and the <loader> piece
is only conditionally supported
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Only gic->supported needs an explicit BOOL_NO setting, all other
'supported' values are handling things correctly
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Switch most 'supported' handling to use virTristateBool, so eventually
we can handle the ABSENT state.
For now the XML formatter treats ABSENT the same as FALSE, so there's
no functional output change. This will be addressed in later patches
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Similar to the macros we have for formatting enums, add a macro to
simplify formatting the pattern:
<FOO supported='yes|no'/>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
In 0eca80e60 _class was renamed to klass for variety of struct
members. However, gather_usb_cap() was missed out in this rename
leaving FreeBSD build broken.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This code originates from:
commit d0aa10fdd6
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Tue Mar 3 12:03:44 2009 +0000
QEMU security driver usage for sVirt support (James Morris, Dan Walsh, Daniel Berrange)
Originally in the qemudDomainGetSecurityLabel function. It doesn't
appear to have done anything useful back then either. The other two
instances look like copy+paste
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
In d16f803d78 we've tried to solve an issue that after wiping an
image its format might have changed (e.g. from qcow2 to raw) but
libvirt wasn't probing the image format. We fixed this by calling
virStorageBackendRefreshVolTargetUpdate() which is what
refreshPool() would end up calling. But this shortcut is not good
enough because the function is called only for local types of
volumes (like dir, fs, netfs). But now that more backends support
volume wiping we have to call the function with more caution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
So far we have two branches: either we zero BLOCK_PER_PACKET
(currently 128) block at once, or if we're close to the last block
then we zero out one block at the time. This is very suboptimal.
We know how many block are there left. Might as well just write
them all at once.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This info can be useful to filter devices visible
to mgmt clients so that they won't see devices that
unsafe/not meaningful to pass thru.
Provide class info the way it is provided by udev or
kernel that is as single 6-digit hexadecimal.
Class element is not optional. I guess this should not
break users that use virNodeDeviceCreateXML because
they probably specify only scsi_host capability on
input and then node device driver gets other capabilities
from udev after device appeared.
HAL driver does not get support for the new element in
this patch.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Vim treats *.h files as cpp ones with respect to syntax highlighting.
Thus "class" in _virNodeDevCapPCIDev highlighted mistakenly.
This can be fixed by filetype detection code tunables but it
is more convinient to skip this tuning by every project member.
Let's just use "klass" as field name instead of _class or class
and add syntax rule.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit [1] moved snapshot list functions declaration into
its own file but missed a fix for vz driver.
[1] 9b75154c : snapshot: Break out virDomainSnapshotObjList into its own file
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
If pool refresh failed, then the internal table of volumes is
probably left in inconsistent or incomplete state anyways. Clear
it out then. This has an advantage that we can move the
virStoragePoolObjClearVols() from those very few backends that
do call it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This is a wrapper over refreshPool() call as at all places we are
doing basically the same. Might as well have a single function to
call.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
In bf5cf610f2 I've fixed a problem where iscsi-direct
backend was reporting only the last LUN. The fix consisted of
moving virStoragePoolObjClearVols() one level up. However, as it
turns out, storage driver already calls it before calling
refreshPool callback (which is
virStorageBackendISCSIDirectRefreshPool() in this case).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
If virStorageBackendISCSIDirectVolWipeZero() fails, it has
already reported an error which is probably specific enough. Do
not overwrite it with some generic one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This function reports error for one of the two error paths. This
is unfortunate as a caller see this function failing but doesn't
know right away if an error was reported.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Despite the misleading name, these were supposed to be used
with a System V style init; however, none of the platforms we
target is using that kind of init anymore: almost all Linux
distributions have switched to systemd, those that haven't
(such as Gentoo and Alpine) are mostly using OpenRC with
custom init scripts, and the BSDs have been doing their own
thing all along.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Not a single one of the platforms we target still uses Upstart, and
the Upstart project itself has been abandoned for several years now.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
snapshot_conf.h was mixing three separate types: the snapshot
definition, the snapshot object, and the snapshot object list.
Separate out the snapshot object list code into its own file, and
update includes for affected clients.
This is just code motion, but done in preparation of sharing a lot of
the object list code with checkpoints.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The next patch will require access to the helper functions
virDomainSnapshotDefFormatInternal and
virDomainSnapshotRedefineValidate from two different files; make the
file split easier by exporting these functions.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
snapshot_conf.h was mixing three separate types: the snapshot
definition, the snapshot object, and the snapshot object list.
Separate out the snapshot object code into its own file, which
includes moving a typedef to avoid circular inclusions.
Mostly straight code motion, although I fixed a comment along
the way, now that virDomainSnapshotForEachDescendent now
guarantees a topological visit (missed in b647d219).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
It's easier to locate a typedef if they are stored in sorted order;
do so mechanically via:
$ sed -i '/typedef struct/ {N; N; s/\n//g}' src/conf/virconftypes.h
$ # sorting the lines
$ sed -i '/typedef struct/ s/;/;\n/g' src/conf/virconftypes.h
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As explained in the previous patch, collecting pointer typedefs into a
common header makes it easier to avoid circular inclusions. Continue
the efforts by pulling the appropriate typedefs from capabilities.h
into the new header.
This patch is just straight code motion (all typedefs are listed in
the same order before and after the patch); a later patch will sort
things for legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right now, snapshot_conf.h is rather large - it deals with three
separate types: virDomainSnapshotDef (the snapshot definition as it
maps to XML), virDomainSnapshotObj (an object containing a def and the
relationship to other snapshots), and virDomainSnapshotObjList (a list
of snapshot objects), where two of the three types are currently
public rather than opaque. What's more, the types are circular: a
snapshot def includes a virDomainPtr, which contains a snapshot list,
which includes a snapshot object, which includes a snapshot def.
In order to split the three objects into separate files, while still
allowing each header to use sane typedefs to incomplete pointers, the
obvious solution is to lift the typedefs into yet another header, with
no other dependencies. Start the split by factoring out all struct
typedefs from domain_conf.h (enum typedefs don't get used in function
signatures, and function typedefs tend not to suffer from circular
referencing, so those stay put). The only other exception is
virDomainStateReason, which is only ever used directly rather than via
a pointer.
This patch is just straight code motion (all typedefs are listed in
the same order before and after the patch); a later patch will sort
things for legibility.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Checking that the derived class is larger than the requested parent
class saves us from some obvious mistakes, but as written, it does not
catch all the cases; in particular, it is easy to forget to update a
VIR_CLASS_NEW when changing the 'parent' member from virObject to
virObjectLockabale, but where the size checks don't catch that. Add a
parameter for one more layer of sanity checking.
It would be cool if we could get gcc to stringize typeof(parent) into
the string name of that type, so that we could confirm that the
precise parent class is in use rather than just a struct that happens
to have the same size as the parent class. But sizeof checks are
better than nothing.
Note that I did NOT change the fact that we require derived classes to
be larger (as the difference in size makes it easy to tell classes
apart), which means that even if a derived class has no functionality
to add (but rather exists for compiler-enforced type-safety), it must
still include a dummy member. But I did fix the wording of the error
message to match the code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
By default, qemu user's home dir points to '/' which shouldn't be used
at all. We therefore pass the HOME variable from the current variable
iff not running as SUID, which means that for systemd we never set it.
This patch makes sure, that for system QEMU this is always set to
libDir/<driver>, session mode is left untouched.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
For session mode, only XDG_CACHE_HOME is set, because we want to remain
integrating with services in user session, but for system mode, this
would have become reading/writing to '/' which carries the obvious issue
with permissions (also, '/' is the wrong location in 99.9% cases anyway).
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some modules/libraries within QEMU could make use of the XDG_ vars when
writing their data to the disk. Define the most common XDG variables
and point them to the specific driver's libDir, i.e.
XDG_CACHE_HOME -> /var/lib/libvirt/<driver>/.cache
XDG_DATA_HOME -> /var/lib/libvirt/<driver>/.local/share
XDG_CONFIG_HOME -> /var/lib/libvirt/<driver>/.config
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The functions do basically exactly the same thing modulo few checks.
In case of virtio disks we check that the device is not multifunction as
that can't be unplugged at once. In case of USB and SCSI disks we
checked that no active block job is running.
The check for running blockjobs should have also been done for virtio
disks. By moving the multifunction check into the common function we fix
this case and also simplify the code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the correct type in switch and populate the missing cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We don't have any cleanup section, we can return the value directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Based on recent list questions about the proposed addition of
virDomainCheckpointCreateXML(REDEFINE), it is worth adding some
clarification to the existing snapshot redefine documentation that is
serving as the basis for checkpoints.
Normal snapshot creation requires very few elements from the user XML
(libvirt can pick sane defaults for items that are omitted, and many
fields, including <domain>, are documented as readonly output fields
ignored on input, produced by drivers that track it). But during
REDEFINE, the API wants the complete XML produced by an earlier
virDomainSnapshotGetXMLDesc; as the domain definition has likely
changed since the snapshot was first created, libvirt is unable to
recreate a <domain> sub-element that matches the original output
representing the domain state at the time the snapshot was first
created. In fact, reverting without a <domain> sub-element is risky
enough that we had to add a FORCE flag for virDomainSnapshotRevert().
In short, we only support omitting domain for qemu because of
backwards-compatibility to snapshots created before 0.9.5 started
capturing <domain>; even though there are other drivers like vbox that
do not output <domain> because they have other reliable ways to
revert.
And based on the confusion caused when omitting <domain> from snapshot
XML, the initial design for checkpoints in later patches will make
<domain> a mandatory element during its REDEFINE.
[Side note: the fact that <domain> can appear in <domainsnapshot> is a
reason we cannot add a new API for a bulk listing or redefine of all
snapshots of a single domain in one XML call (for example, a 1M
<domain> XML * 16 snapshots explodes into 16M in a bulk form, which
gets difficult to send over RPC). Perhaps we could add a flag to
request that the <domain> sub-element be omitted on output, but such
output is no longer suitable for sane REDEFINE input.]
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
I had to inspect the code to learn whether a final virObjectUnref()
calls ALL dispose callbacks in child-to-parent order (akin to C++
destructors), or whether I manually had to call a parent-class dispose
when writing a child class dispose method. The answer is the
former. (Thankfully, since VIR_FREE wipes out pointers for safety,
even if I had guessed wrong, I probably would not have tripped over a
double-free fault when the parent dispose ran for the second time). I
also had to read the code to learn if a dispose method was even
mandatory (it is not, although getting NULL through VIR_CLASS_NEW
requires a macro). While at it, the VIR_CLASS_NEW macro requires that
the virObject component at offset 0 be reached through the name
'parent', not 'object'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1623389
If a device is detached twice from the same domain the following
race condition may happen:
1) The first DetachDevice() call will issue "device_del" on qemu
monitor, but since the DEVICE_DELETED event did not arrive in
time, the API ends claiming "Device detach request sent
successfully".
2) The second DetachDevice() therefore still find the device in
the domain and thus proceeds to detaching it again. It calls
EnterMonitor() and qemuMonitorSend() trying to issue "device_del"
command again. This gets both domain lock and monitor lock
released.
3) At this point, qemu sends us the DEVICE_DELETED event which is
going to be handled by the event loop which ends up calling
qemuDomainSignalDeviceRemoval() to determine who is going to
remove the device from domain definition. Whether it is the
caller that marked the device for removal or whether it is going
to be the event processing thread.
4) Because the device was marked for removal,
qemuDomainSignalDeviceRemoval() returns true, which means the
event is to be processed by the thread that has marked the device
for removal (and is currently still trying to issue "device_del"
command)
5) The thread finally issues the "device_del" command, which
fails (obviously) and therefore it calls
qemuDomainResetDeviceRemoval() to reset the device marking and
quits immediately after, NOT removing any device from the domain
definition.
At this point, the device is still present in the domain
definition but doesn't exist in qemu anymore. Worse, there is no
way to remove it from the domain definition.
Solution is to note down that we've seen the event and if the
second "device_del" fails, not take it as a failure but carry on
with the usual execution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
A caller might be interested in differentiating the cause for
error, especially if DeviceNotFound error occurred.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
The aim of this function will be to fix return value of
qemuMonitorDelDevice() in one specific case. But that is yet to
come. Right now this is nothing but a plain substitution.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Any job which is able to provide statistics that can be queried via
virDomainGetJob{Stats,Info} has to set an appropriate statsType.
Without a proper statsType qemuDomainJobInfoToParams and
qemuDomainJobInfoToInfo have no idea what statistics should be sent to
the API caller.
https://bugzilla.redhat.com/show_bug.cgi?id=1688774
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Fill in a default volume type for every pool type, as reported
by the VolGetInfo API. Now that we cover the whole enum, report
an error for invalid values.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
We provide a custom configure option --enable-test-coverage and
'make cov' target to generate code coverage reports. However gnulib
already provides a 'make coverage' which 'just works' and doesn't
require a special configure option.
This drops our custom implementation in favor of 'make coverage'.
Reports are now output to cov/index.html
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Introduce a simple validation helper to perform the cputune period and
quota checks so that we can get rid of those repetitive chunks. Since
this is a validation helper, this patch also moves the checks from the
'parse' phase into the 'validation' phase.
Signed-off-by: Suyang Chen <dawson0xff@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Apparently this was necessary in the past because old versions
of autoconf/automake didn't make them available, but these
days all of the platforms we target include recent enough
autotools - as evidenced by the fact that, for example, we
already use abs_top_srcdir in tools/ despite the fact that
tools/Makefile.am is missing the same boilerplate.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
According to the official documentation for autoconf[1], the
correct names for these variables are abs_top_{src,build}dir
rather than abs_top{src,build}dir; in fact, we're already
using the correct names in various places, so let's just make
everything nice and consistent.
[1] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Preset-Output-Variables.html
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
An upcoming patch wants to reuse XML parsing of both unix and tcp
network host descriptions in the context of setting up a backup
NBD server. Make that easier by refactoring the existing parser.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We copy-and-paste a lot of our docs, as evidenced by the number of
*GetXMLDesc() functions which had the same unusual indentation and
missing capital in the second sentence of the returns paragraph.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit 09eb1ae0 added a new enum type for xenbus, and adjusted
affected switch statements in the qemu driver, but failed to notice
that the vbox driver had a similar switch statement.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add support in the domXML<->native config converter for
max_grant_frames. Include a test for the conversion.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for setting max_grant_frames in libxl domain config
object and include a test to check that it is properly converted
from XML to libxl domain config.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
All Xen domains have a xenbus device. Implicitly add one if not
already explicitly specified in the domain config.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
xenbus is virtual controller (akin to virtio controllers) for Xen
paravirtual devices. Although all Xen VMs have a xenbus, it has
never been modeled in libvirt, or in Xen native VM config format
for that matter.
Recently there have been requests to support Xen's max_grant_frames
setting in libvirt. max_grant_frames is best modeled as an attribute
of xenbus. It describes the maximum IO buffer space (or DMA space)
available in xenbus for use by connected paravirtual devices. This
patch introduces a new xenbus controller type that includes a
maxGrantFrames attribute.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit a3ab6d42 changed the libvirtd profile to a named profile,
breaking the apparmor driver's ability to detect if the profile is
active. When the apparmor driver loads it checks the status of the
libvirtd profile using the full binary path, which fails since the
profile is now referenced by name. If the apparmor driver is
explicitly requested in /etc/libvirt/qemu.conf, then libvirtd fails
to load too.
Instead of only checking the profile status by full binary path,
also check by profile name. The full path check is retained in case
users have a customized libvirtd profile with full path.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
This helper performs a conversion from a "yes|no" string to a
corresponding boolean. This allows us to drop several repetitive
if-then-else string->bool conversion blocks.
Signed-off-by: Shotaro Gotanda <g.sho1500@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Luckily, the function returns only 0 or -1 so all the checks work
as expected. Anyway, our rule is that a positive value means
success so if the function ever returns a positive value these
checks will fail. Make them check for a negative value properly.
At the same time fix qemuDomainDetachExtensionDevice() reval
check. It is somewhat related to the aim of this patch.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The qemuFirmwareFetchConfigs() function is supposed to fetch all
firmware descriptions from paths defined by firmware.json
specification. This includes user's $HOME directory. However, it
was agreed that if libvirtd is running as privileged user then
his $HOME is ignored (thus $HOME is included in the search only
for regular users). Well, I got the condition wrong - it should
have been reversed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
snapshot_conf does all the hard work, the qemu driver just has to
accept the new flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
snapshot_conf does all the hard work, the test driver just has to
accept the new flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Wire up support for VIR_DOMAIN_SNAPSHOT_LIST_TOPOLOGICAL in the
domain-agnostic support code.
Clients of snapshot_conf using virDomainSnapshotForEachDescendant()
are using a depth-first visit but with postfix visits of a given
node. Changing this to a prefix visit of the given node instantly
turns this into a topologically-ordered visit. (A prefix
breadth-first visit would also be topologically sorted, but that
requires a queue while our recursion naturally has a stack).
With that change, we now always have a topological sort for
virDomainSnapshotListAllChildren() regardless of the new public API
flag. Then with one more tweak, we can also get a topological rather
than a faster random hash visit for virDomainListAllSnapshots(), by
doing a descendent walk from our internal metaroot (there, we let the
public API flag control behavior, because a topological sort DOES
require more stack and slightly more time).
Note that virDomainSnapshotForEach() still uses a random hash visit;
we could change that signature to take a tri-state for random, prefix,
or postfix visit if we ever had clients that cared about the
distinctions, but for now, none of the drivers seem to care.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When using virDomainSnapshotCreateXML with the REDEFINE flag on
multiple snapshot metadata XML descriptions, we require that a child
cannot be redefined before its parent. Since libvirt already tracks a
DAG, it is more convenient if we can ensure that
virDomainListAllSnapshots() and friends have a way to return data in
an order that we can directly reuse, rather than having to
post-process the data ourselves to reconstruct the DAG.
Add VIR_DOMAIN_SNAPSHOT_LIST_TOPOLOGICAL as our new guarantee (well, a
guarantee at the time of the API call conclusion; there's always a
possible TOCTTOU race where someone redefining snapshots in between
the API results and the client actually using the list might render
the list out-of-date). Four listing APIs are directly benefitted by
the new flag; additionally, since we document that the older racy
ListNames interfaces should be sized by using the same flags on their
Num counterparts, the Num interfaces must document when they accept
(and ignore) the flag.
We could have supported the new flag just for the ListAll APIs (to
discourage people from using the older racy Num/ListNames APIs), but
it feels weird to special-case this flag value as being applicable to
only a subset of the API while all other List-related flags are
trivially applicable to all 6.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1564270
Now that everything is prepared for qemu driver we can enable
parser feature to allow users define such domains.
At the same time, introduce bunch of tests to test the feature.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The firmware selection code will enable the feature if needed.
There's no need to require SMM to be enabled in that case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
And finally the last missing piece. This is what puts it all
together.
At the beginning, qemuFirmwareFillDomain() loads all possible
firmware description files based on algorithm described earlier.
Then it tries to find description which matches given domain.
The criteria are:
- firmware is the right type (e.g. it's bios when bios was
requested in domain XML)
- firmware is suitable for guest architecture/machine type
- firmware allows desired guest features to stay enabled (e.g.
if s3/s4 is enabled for guest then firmware has to support
it too)
Once the desired description has been found it is then used to
set various bits of virDomainDef so that proper qemu cmd line is
constructed as demanded by the description file. For instance,
secure boot enabled firmware might request SMM -> it will be
enabled if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Implementation for yet another part of firmware description
specification. This one covers selecting which files to parse.
There are three locations from which description files can be
loaded. In order of preference, from most generic to most
specific these are:
/usr/share/qemu/firmware
/etc/qemu/firmware
$XDG_CONFIG_HOME/qemu/firmware
If a file is found in two or more locations then the most specific
one is used. Moreover, if file is empty then it means it is
overriding some generic description and disabling it.
Again, this is described in more details and with nice examples
in firmware.json specification (qemu commit 3a0adfc9bf).
However, there's one slight difference - for the root user the
home directory is not searched. This follows rules laid out by
similar look up processes, e.g. PKI x509 certs are not searched
in /root but they are looked for under /home.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
The firmware description is a JSON file which follows
specification from qemu.git/docs/interop/firmware.json. The
description file basically says: Firmware file X is {bios|uefi},
supports these targets and machine types, requires these features
to be enabled on qemu cmd line and this is how you put it onto
qemu cmd line.
The firmware.json specification covers more (i.e. how to select
the right firmware) but that will be covered and implemented in
next commits.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The idea is that using this attribute users enable libvirt to
automagically select firmware image for their domain. For
instance:
<os firmware='efi'>
<type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
<loader secure='no'/>
</os>
<os firmware='bios'>
<type arch='x86_64' machine='pc-q35-4.0'>hvm</type>
</os>
(The automagic of selecting firmware image will be described in
later commits.)
Accepted values are 'bios' and 'efi' to let libvirt select
corresponding type of firmware.
I know it is a good sign to introduce xml2xml test case when
changing XML config parser but that will have to come later.
Firmware auto selection is not enabled for any driver just yet so
any xml2xml test would fail right away.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This is going to extend virDomainLoader enum. The reason is that
once loader path is NULL its type makes no sense. However, since
value of zero corresponds to VIR_DOMAIN_LOADER_TYPE_ROM the
following XML would be produced:
<os>
<loader type='rom'/>
...
</os>
To solve this, introduce VIR_DOMAIN_LOADER_TYPE_NONE which would
correspond to value of zero and then use post parse callback to
set the default loader type to 'rom' if needed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Except not really. At least for now.
In the future, the firmware will be selected automagically.
Therefore, it makes no sense to require the pathname of a
specific firmware binary in the domain XML. But since it is not
implemented do not really allow the path to be NULL. Only move
code around to prepare it for further expansion.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In some cases, the string representing architecture is different
in qemu and libvirt. That is the reason why we have
virQEMUCapsArchFromString() and virQEMUCapsArchToString(). So
far, we did not need them outside of qemu_capabilities code, but
this will change shortly. Expose them then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Move the code that (possibly) generates filename of NVRAM VAR
store into a single function so that it can be re-used later.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Similarly to CAT, when you set some values in an group, remove the group and
recreate it, the previous values will be kept there. In order to not get values
from a previous setting (a previous VM, for example), we need to set them to
sensible defaults. The same way we do that for CAT, just set the same values as
the default group has.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
For CAT we calculate unallocated parts of the cache, however with MBA this does
not make sense as the purpose of that is to limit the bandwidth and the setting
is only proportional relative to bandwidth settings for other groups.
This means it makes sense to set the values to 100% even if there are other
groups with some allocations and that we don't need to find the available
(unallocated) bandwidth in all the groups.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The existing behavior for ppc64 guests is to always add a USB
keyboard and mouse combo if graphics are present; unfortunately,
this means any attempt to use a USB tablet will cause both pointing
devices to show up in the guest, which in turn will result in poor
user experience.
We can't just stop adding the USB mouse or start adding a USB tablet
instead, because existing applications and users might rely on the
current behavior; however, we can avoid adding the USB mouse if a USB
tablet is already present, thus allowing users and applications to
create guests that contain a single pointing device.
https://bugzilla.redhat.com/show_bug.cgi?id=1683681
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
While the parser and schema have to accept all possible models,
virtio-(non-)transitional models are only applicable to
type=passthrough and should be otherwise rejected.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Only PCI devices have '/sys/class/net/<ifname>/device/resource' so we
need to skip this check for all other network devices.
Without this patch and RDMA enabled libvirt will not detect any network
device that doesn't have the path above which includes 'lo', 'virbr',
'tun', etc.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1639258
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If we pass XML to virDomainDefineXML API with these two elements:
...
<title></title>
<description></description>
...
libvirt correctly ignores these two elements and they will not appear
in the parsed XML.
However, if we use virDomainSetMetadata API and with "" as value for
title or description we will end up with the parsed XML that contains
these empty elements.
Let's fix the behavior of this API to behave the same as
virDomainDefineXML.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1518042
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Fix an incorrect @xmlDesc comment, as well as adding more details
about which XML element should be root.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add a new function to make it possible to parse a list of snapshots
at once. This is a counterpart to an earlier patch making it
possible to produce all snapshots in a single XML string, and
intentionally parses the same top-level element <snapshots> with
an optional attribute current='name'.
Note that since we know we started with no relations at all, and
since checking parent relationships per-snapshot is not viable as
we don't control which order the snapshots appear in, that we are
fine with doing a final pass to update all parent/child
relationships among the definitions.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Pull out the portion of virDomainSnapshotRefinePrep() that deals
with definition sanity into a separate helper routine that can
be reused with bulk redefine, leaving behind only the code
specific to loop checking and in-place updates that are only
needed in single-definition handling.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Right now, the only callers of qemuDomainSnapshotDiscardAllMetadata()
are right before freeing the virDomainSnapshotObjList, so it did not
matter if the list's metaroot (which points to all the defined root
snapshots) is left inconsistent. But an upcoming patch will want to
clear all snapshots if a bulk redefine fails partway through, in
which case things must be reset. Make this work by teaching the
existing virDomainSnapshotUpdateRelations() to be safe regardless of
the incoming state of the metaroot (since we don't want to leak that
internal detail into qemu code), then fixing the qemu code to use
it after deleting all snapshots. Additionally, the qemu code must
reset vm->current_snapshot if the current snapshot was removed,
regardless of whether the overall removal succeeded or failed later.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add a new function to output all of the domain's snapshots in one
buffer.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Split out an internal helper that produces format into a
virBuffer, similar to what domain_conf.c does, and making
the next patch easier to write.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
virDomainSnapshotDefFormat currently takes two sets of knobs:
an 'unsigned int flags' argument that can currently just be
VIR_DOMAIN_DEF_FORMAT_SECURE, and an 'int internal' argument used as
a bool to determine whether to output an additional element. It
then reuses the 'flags' knob to call into virDomainDefFormatInternal(),
which takes a different set of flags. In fact, prior to commit 0ecd6851
(1.2.12), the 'flags' argument actually took the public
VIR_DOMAIN_XML_SECURE, which was even more confusing. Let's borrow
from the style of that earlier commit, by introducing a function
for translating from the public flags (VIR_DOMAIN_SNAPSHOT_XML_SECURE
was just recently introduced) into a new enum specific to snapshot
formatting, and adjust all callers to use snapshot-specific enum
values when formatting, and where the formatter now uses a new
variable 'domainflags' to make it obvious when we are translating
from snapshot flags back to domain flags. We don't even have to
use the conversion function for drivers that don't accept the
public VIR_DOMAIN_SNAPSHOT_XML_SECURE flag.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Clean up the previous patch which abused switch on virDomainState
while working with a variable containing virDomainSnapshotState, by
converting the two affected switch statements to now use the right
enum.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The existing virDomainSnapshotState is a superset of virDomainState,
adding one more state (disk-snapshot) on top of valid domain states.
But as written, the enum cannot be used for gcc validation that all
enum values are covered in a strongly-typed switch condition, because
the enum does not explicitly include the values it is adding to.
Copy the style used in qemu_blockjob.h of creating new enum names
for every inherited value, and update most clients to use the new
enum names anywhere snapshot state is referenced. The exception is
two switch statements in qemu code, which instead gain a fixme
comment about odd type usage (which will be cleaned up in the next
patch). The rest of the patch is fairly mechanical (I actually did
it by temporarily s/state/xstate/ in snapshot_conf.h to let the
compiler find which spots in the code used the field, did the
obvious search and replace in those functions, then undid the rename).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuDomainSnapshotWriteMetadata does not modify the directory name,
and making it const-correct aids in writing an upcoming patch.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The current qemu code rejects the combination of the two flags
VIR_DOMAIN_SNAPSHOT_CREATE_LIVE in tandem with
VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE, but rather late in the cycle
(after the snapshot was already parsed), and with a rather confusing
message (complaining that live snapshots require external storage,
even if the redefined snapshot already declares external storage).
Hoist the rejection message to occur earlier (before parsing any
XML, which also aids upcoming patches that will implement bulk
redefine), and with a more typical error message about mutually
exclusive flags.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Failure would have occurred for @ctxt before in callers' other
virXPath calls and @def derefs.
Found by Coverity due to commit 66a508d2 using VIR_XPATH_NODE_AUTORESTORE
to access @ctxt before the if condition. The @def was noted by review.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If shutting down a container via setting the runlevel fails, the
control jumps right onto endjob label and doesn't even try
sending the signal. If flags allow it, we should try both
methods.
Signed-off-by: Maxim Kozin <kolomaxes@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We can use STRNEQ() instead of STRNEQLEN() since we're only
interested in the trailing part of the string and we've
already verified that the length of file, name and suffix
are those we expect.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
While this function is not, strictly speaking, a predicate,
it still mostly behaves like one as evidenced by the vast
majority of its callers, so using bool rather than int as
the return type makes sense.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Since qemu 2.13 reports the target architecture in a property called
'target' additionally to the property 'arch', that has been used in
qemu 2.12 in the response data of 'query-cpus-fast'.
Libvirts monitor code prefers the 'target' property over 'arch'.
At least for s390(x), target is reported as 's390x' while arch is 's390'.
In a later step a comparison is performed against 's390' which fails for
qemu 2.13 and later.
In consequence the architecture specific data for s390 won't be extracted
from the returned data, leading to incorrect values being reported by
virsh domstats --vcpu.
Changing to check explicitly for 's390' and 's390x'.
Signed-off-by: Viktor Mihajlovski <mihajlov@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Problem is that if there are no signatures for a CPU, then we
still allocate cpu->signatures (even though with size 0). Later,
we access cpu->signatures[0] if cpu->signatures is not NULL.
Invalid read of size 4
at 0x5F439D7: virCPUx86Translate (cpu_x86.c:2930)
by 0x5F3C239: virCPUTranslate (cpu.c:927)
by 0x57CE7A1: qemuProcessUpdateGuestCPU (qemu_process.c:5870)
...
Address 0xf752d40 is 0 bytes after a block of size 0 alloc'd
at 0x4C30EC6: calloc (vg_replace_malloc.c:711)
by 0x5DBDE4E: virAllocN (viralloc.c:190)
by 0x5F3E4FA: x86ModelCopySignatures (cpu_x86.c:990)
by 0x5F3E60F: x86ModelCopy (cpu_x86.c:1008)
by 0x5F3E7CB: x86ModelFromCPU (cpu_x86.c:1068)
by 0x5F4397E: virCPUx86Translate (cpu_x86.c:2922)
by 0x5F3C239: virCPUTranslate (cpu.c:927)
by 0x57CE7A1: qemuProcessUpdateGuestCPU (qemu_process.c:5870)
...
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
There is a lot of documentation in the comments about how PPC64 handles
passthrough VFIO devices to calculate the @memLockLimit. And more will
be added with the PPC64 NVLink2 support code.
Let's remove the PPC64 code from qemuDomainGetMemLockLimitBytes()
body and put it into a helper function. This will simplify the
flow of qemuDomainGetMemLockLimitBytes() that handles all the other
platforms and improves readability of the PPC64 specifics.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
@passthroughLimit is being calculated even if @usesVFIO is false. After
that, an if-else conditional is used to check if we're going to sum it
up with @baseLimit.
This patch initializes @passthroughLimit to zero and always returns
@memKB = @baseLimit + @passthroughLimit. The conditional is then used to
calculate @passthroughLimit if @usesVFIO == true. This results in some
cycles being spared for the @usesVFIO == false scenario, but the real
motivation is to make the code simpler to add an alternative formula to
calculate @passthroughLimit for NVLink2.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Capabilities should not duplicate data that are obvious from our
documentation and will not change with different QEMU binaries
or the way how we compile libvirt.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When dealing with internal paths we don't need to worry about
whether or not suffixes are lowercase since we have full control
over them, which means we can avoid performing case-insensitive
string comparisons.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This is the case-sensitive counterpart of the existing
virStringHasCaseSuffix() function.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
In addition to the obvious s/File/String/, also tweak the name
to make it clear that the presence of the suffix is verified
using case-insensitive comparison.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
In these cases the check that is removed has been done a few
lines above already (as can even be seen in the context). Drop
them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Commit a3ab6d42 changed the libvirtd profile to a named profile
but neglected to accommodate the change in the qemu profile
ptrace and signal rules. As a result, libvirtd is unable to
signal confined qemu processes and hence unable to shutdown
or destroy VMs.
Add ptrace and signal rules that reference the libvirtd profile
by name in addition to full binary path.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1581670
Create the storage driver code to generate the output for the
storage pool capabilities XML.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce the API to expose the storage pool capabilities along
with all the remote munglement required to hook up the client.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Add support to format the storage pool capabilities using
the virStoragePoolTypeInfoPtr to determine what capabilities
exist for the various pools and the driver capabilities to
determine whether the pool is compiled in and supported.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1581670
During storage driver backend initialization, let's save
which backends are available in the storage pool capabilities.
In order to format those, we need add a connectGetCapabilities
processor to the storageHypervisorDriver. This allows a storage
connection, such as "storage:///system" to find the API and
format the results, such as:
virsh -c storage:///system capabilities
<capabilities>
<pool>
<enum name='type'>
<value>dir</value>
<value>fs</value>
<value>netfs</value>
<value>logical</value>
<value>iscsi</value>
<value>iscsi-direct</value>
<value>scsi</value>
<value>mpath</value>
<value>disk</value>
<value>rbd</value>
<value>sheepdog</value>
<value>gluster</value>
<value>zfs</value>
</enum>
</pool>
</capabilities>
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce the bare bones functions to processing capability
data for the storage driver.
Since there will be no need for the <host> output, we need
to filter that data.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The ZFS pool is documented as not using pool format types, so remove
the defaultFormat value.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The multipath pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The iscsi and iscsi-direct pools are documented as not using
the volume type, so let's just remove it. Besides it would
have produced bad output since formatting uses the Disk types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The scsi pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The rbd pool is documented as not using the volume type,
so let's just remove it.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
The sheepdog pool is documented as not using the volume type,
so let's just remove it. Besides it would have produced bad
results since the defaultType is FILE but the formatting used
the Disk types.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Rather than moving the XPath root node in the caller and then still
passing it down, make sure that the callees move the node themselves.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove logic necessary to figure out whether to format the 'features'
element by using virXMLFormatElement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement for the formatting which allows us to avoid
looking through the array to see if any feature is enabled.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If none of the 'capabilities' features are enabled we'd still format the
opening and closing tag for the <capabilities element.
The implementation is suboptimal but will be refactored for a better
approach. This is done prior to the refactor to show that tests are not
impacted.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use VIR_AUTOCLEAN to avoid leaking the buffer on error path and get rid
of resetting mid loop since virXMLFormatElement does the reset
internally.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'i' is always in range of the enum, thus the name is always populated by
virDomainFeatureTypeToString.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These buffers are used temporarily for some of the partial formatters
but not globally. Prefix the name with 'tmp' to be explicit.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pure code motion of code for formatting domain features to a function
called virDomainDefFormatFeatures. Best viewed with the '--patience'
option for git show.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Split out the code into a separate function named
virDomainDefFormatBlkiotune and use virXMLFormatElement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use virXMLFormatElement to format the internals along with simplifying
cleanup code paths.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Refactor the function to use the XML formatting aid and use automatic
cleaning to simplify the control flow.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function does not transfer errors from 'attrBuf' and 'childBuf'
arguments into 'buf', but rather reports them right away, thus we need
to make sure that it's always checked.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The qemuMigrationParamsApply internal API was designed to apply all
migration parameters and capabilities before we start to migrate a
domain. While migration parameters are only passed to QEMU when we
explicitly want to set a specific value, capabilities are always either
enabled or disabled.
Thus when this API is called outside migration job, e.g., via a call to
qemuDomainMigrateSetMaxSpeed with VIR_DOMAIN_MIGRATE_MAX_SPEED_POSTCOPY
flag, we would call migrate-set-capabilities and disable all
capabilities. However, changing capabilities while migration is already
running does not make sense and our code should never be trying to do
so. In fact QEMU even reports an error if migrate-set-capabilities is
called during migration and qemuDomainMigrateSetMaxSpeed would fail
with:
internal error: unable to execute QEMU command
migrate-set-capabilities: There's a migration process in progress
With this patch qemuMigrationParamsApply never tries to call
migrate-set-capabilities outside of migration job. When the capabilities
bitmap is all zeros (which is its initial value after
qemuMigrationParamsNew), we just skip the command. But when any
capability bit is set to 1 by a non-migration job, we report an error to
highlight a bug in our code.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Further testing with more devices showed that we sometimes have a
different depth of pci device paths when accessing sysfs for device
attributes.
But since the access is limited to a set of filenames and read only it
is safe to use a wildcard for that.
Related apparmor denies - while we formerly had only considered:
apparmor="DENIED" operation="open"
name="/sys/devices/pci0000:00/0000:00:02.1/uevent"
requested_mask="r"
We now also know of cases like:
apparmor="DENIED" operation="open"
name="/sys/devices/pci0000:00/0000:00:03.1/0000:1c:00.0/uevent"
requested_mask="r"
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1817943
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Further testing with different devices showed that we need more rules
to drive gl backends with nvidia cards. Related denies look like:
apparmor="DENIED" operation="open"
name="/usr/share/egl/egl_external_platform.d/"
requested_mask="r"
apparmor="DENIED" operation="open"
name="/proc/modules"
requested_mask="r"
apparmor="DENIED" operation="open"
name="/proc/driver/nvidia/params"
requested_mask="r"
apparmor="DENIED" operation="mknod"
name="/dev/nvidiactl"
requested_mask="c"
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1817943
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1685151
This reverts commit e4a969092b.
Now that drivers may call virConnectOpen() on secondary drivers, it
doesn't make much sense to have autostart separated from driver
initialization callback. In fact, it creates a problem because one
driver during its initialization might try to fetch an object from
another driver but since the object is yet to be autostarted the fetch
fails. This has been observed in reality: qemu driver performs
qemuProcessReconnect() during qemu's stateInitialize phase which may
call virDomainDiskTranslateSourcePool() which connects to the storage
driver to look up the volume. But the storage driver did not autostart
its pools yet therefore volume lookup fails and the domain is killed.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1685151
This reverts commit cefb97fb81.
The stateAutoStart callback will be removed in the next commit.
Therefore move autostarting of domains, networks and storage
pools back into stateInitialize callbacks.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The stateAutoStart callback will go away shortly. Therefore, move
the autostart call into state initialize callback.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The order in which drivers are registered is important because
their stateInitialize and stateAutoStart callback are called in
that order. Well, stateAutoStart is going away and therefore if
there is some dependency between two drivers (e.g. when
initializing storage driver expects secret driver to be available
already), the registration of such drivers must happen in correct
order.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This fixes several CPUs which were incorrectly detected as
Skylake-Client.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This fixes several CPUs which were incorrectly detected as a different
CPU model.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The family/model numbers are nice for humans or for comparing with
/proc/cpuinfo, but sometimes there's a need to see the CPUID
representation of the signature. Let's add it into a comment for each
signature in out cpu_map XMLs as the conversion is not exactly
straightforward.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function exports the functionality of x86DataToSignatureFull and
x86MakeSignature to the test suite.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Most places in qemu_capabilities.c which call virQEMUCapsGetHostCPUData
actually need qemuMonitorCPUModelInfoPtr from QEMU caps. Let's use the
wrapper introduced in the previous commit instead.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a simple wrapper around virQEMUCapsGetHostCPUData usable in
tests for getting qemuMonitorCPUModelInfoPtr from QEMU caps.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code for transforming qemuMonitorCPUModelInfo data from QEMU into
virCPUDefPtr consumable by virCPU* APIs was hidden inside
virQEMUCapsInitCPUModelX86. This patch moves it into a new function to
make it usable in tests.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The log message may be useful when debugging why a specific CPU model
was selected for a given set of CPUID data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
CPU signatures in the cpu_map serve as a hint for CPUID to CPU model
matching algorithm. If the CPU signatures matches any CPU model in the
cpu_map, this model will be the preferred one.
This works out well and solved several mismatches, but in real world
CPUs which should match a single CPU model may be produced with several
different signatures. For example, low voltage Broadwell CPUs for
laptops and Broadwell CPUs for servers differ in CPU model numbers while
we should detect them all as Broadwell CPU model.
This patch adds support for storing several signatures for a single CPU
model to make this hint useful for more CPUs. Later commits will provide
additional signatures for existing CPU models, which will correct some
results in our CPU test suite.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In preparation for storing several CPU signatures in a single CPU model,
we need to turn virCPUx86Model's signature into an array of signatures.
The parser still hardcodes the number of signatures to 1, but the
following patch will drop this limit.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a helper for copying CPU signature between two CPU models.
It's not very useful until the way we store signatures is changed in the
next patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Having multiple CPU model definitions with the same name could result in
unexpected behavior.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseFeatures function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseVendor function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseSignature function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code is separated into a new x86ModelParseAncestor function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After commits e2087c2 and ec0793de older GCC started act very smart and
complain about potentially uninitialized variable, which existed prior
to these patches + even if the affected vars were left uninitialized the
function responsible for filling them in would have failed with NULL
being returned which the caller has always handled carefully.
Although GCC complained only about a single variable, let's initialize
all of them so as to prevent any further potential breakages.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Add <controller type='scsi' model handling for virtio transitional
devices. Ex:
<controller type='scsi' model='virtio-transitional'/>
* "virtio-transitional" maps to qemu "virtio-scsi-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-scsi-non-transitional"
The naming here doesn't match the pre-existing model=virtio-scsi.
The prescence of '-scsi' there seems kind of redundant as we have
type='scsi' already, so I decided to follow the pattern of other
patches and use virtio-transitional etc.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<input> devices lack the model= attribute which is used by
most other device types. To eventually support
virtio-input-host-pci-{non-}traditional in qemu, let's add
a standard model= attribute. This just adds the domain_conf
wiring
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<filesystem> devices lack the model= attribute which is used by
most other device types. To eventually support
virtio-9p-pci-{non-}traditional in qemu, let's add a standard
model= attribute. The accepted values are:
- virtio
- virtio-transitional
- virtio-non-transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
qemu vhost-scsi devices map to XML roughly like:
<hostdev mode='subsystem' type='scsi_host'>
<source protocol='vhost' wwpn=X/>
</hostdev>
To support vhost-scsi-pci-{non-}traditional in qemu, we
need to to extend the SCSI Host hostdev XML to handle
model= value. This matches the XML model= format used
for mediated devices. This is just the domain_conf bits
and some XML test cases.
Use of virtio-X naming here does not match the hostdev
protocol=vhost nor does it match the qemu vhost-X device
naming, however it's more consistent with all other
model= names in this area, and also matches the
inconsistency of <vsock> devices which use model=virtio
but map to vhost-vsock on the qemu commandline
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add new <disk> model values for virtio transitional devices. When
combined with bus='virtio':
* "virtio-transitional" maps to qemu "virtio-blk-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-blk-pci-non-transitional"
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
<disk> devices lack the model= attribute which is used by
most other device types. bus= mostly acts as one, but it
serves other purposes too like determing what target=
prefix to use, and for matching against controller type=
values.
Extending bus= to handle additional virtio transitional
devices will complicate apps lives, and it isn't a clean
mapping anyways. So let's bite the bullet and add a new
<disk model=X/> attribute, and wire up common handling
for virtio and virtio-{non-}transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Add a single QEMU_CAPS_VIRTIO_PCI_TRANSITIONAL that
will be set if any of the following qemu devices are found:
virtio-blk-pci-transitional
virtio-blk-pci-non-transitional
virtio-net-pci-transitional
virtio-net-pci-non-transitional
vhost-scsi-pci-transitional
vhost-scsi-pci-non-transitional
virtio-rng-pci-transitional
virtio-rng-pci-non-transitional
virtio-9p-pci-transitional
virtio-9p-pci-non-transitional
virtio-balloon-pci-transitional
virtio-balloon-pci-non-transitional
vhost-vsock-pci-transitional
vhost-vsock-pci-non-transitional
virtio-input-host-pci-transitional
virtio-input-host-pci-non-transitional
virtio-scsi-pci-transitional
virtio-scsi-pci-non-transitional
virtio-serial-pci-transitional
virtio-serial-pci-non-transitional
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1658504
This function is called when a domain is starting up (in qemu
driver that is when qemu cmd line is generated). It is used to
translate <disk type='volume'/> to something usable by filling in
virStorageSource (e.g. fetching disk path, or some connection URI
for a network FS). But some of these info are not stored in
status XML and thus the function is called on
qemuProcessReconnect too to reconstruct runtime data. But this
poses a problem because after the first run the mode is set to
'direct', but in the second run this triggers a failure because
mode is valid only for 'iscsi' volumes and not 'iscsi-direct'
ones.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Rewrite the code to make usage of some VIR_AUTOFREE logic.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we're using VIR_AUTOFREE there's quite a bit of clean up
possible for now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities for VIR_FREE consumers.
In some cases adding or removing blank lines for readability.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
In preparation for VIR_AUTOFREE usage, let's remove a couple
of unused variables so that clang compilations won't fail.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we're using VIR_AUTOPTR(virBitmap) there's a couple of methods
that we can clean up some now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities for virBitmapPtr.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
In preparation for using auto free mechanism, change to using the
VIR_STEAL_PTR on @def to @ret and of course be sure to properly clean
up @def in cleanup.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use the new helper when moving around the current node of the XPath
context.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Quite a few parts modify the XPath context current node to shift the
scope and allow easier queries. This also means that the node needs
to be restored afterwards.
Introduce a macro based on 'VIR_AUTOCLEAN' which adds a local structure
on the stack remembering the original node along with a function which
will make sure that the node is reset when the local structure leaves
scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The helper function is used by the VIR_AUTOUNREF macro. Prior art is to
clear the pointer even if the variable goes out of scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'd free only the first element of the vector leaking the rest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We don't need it as there's a separate macro for auto-freeing of string
lists.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use of VIR_AUTOPTR and virString is confusing as it's a list and not a
single pointer. Replace it by VIR_AUTOSTRINGLIST as string lists are
basically the only sane NULL-terminated list we can have.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Similar to VIR_AUTOPTR, VIR_AUTOSTRINGLIST defines a list of strings
which will be freed if the pointer is leaving scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The existing qemu snapshot code has a slight bug: if the domain
is currently pmsuspended, you can't use the _REDEFINE flag even
though the current domain state should have no bearing on being
able to recreate metadata state; and conversely, you can use the
_REDEFINE flag to create snapshot metadata claiming to be
pmsuspended as a bypass to the normal restrictions that you can't
create an original qemu snapshot in that state (the restriction
against pmsuspend is specific to qemu, rather than part of the
driver-agnostic snapshot_conf code).
Fix this by checking the snapshot state (when redefining) instead
of the domain state (which is a subset of snapshot states).
Fixes the second problem mentioned in https://bugzilla.redhat.com/1680304
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Both block_size and nb_block are unit32_t and multiplying them overflows
at 4GiB.
Moreover, the iscsi_*10_* APIs use 32bit number of blocks and thus they
can only address images up to 2TiB with 512B blocks. Let's use 64b
iscsi_*16_* APIs instead.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When fetching LUNs from iscsi server the
virISCSIDirectReportLuns() is called. This function does some
libiscsi calls and then calls virISCSIDirectRefreshVol() over
each LUN found. It's unfortunate that the latter calls
virStoragePoolObjClearVols() as we lose all LUNs processed
in previous iterations.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Jirka reported a bug that with every 'virsh pool-refresh' an
iscsi-direct pool would grow and grow. The problem is that
virISCSIDirectRefreshVol() only adds to def->capacity and
def->allocation but nothing clears it out to begin with.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
For consistency with other error messages, and the fact that
the object is always called a virDomainSnapshot rather than
a mere virSnapshot, include the word "domain" in the error
message.
Suggested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Commit 28f8dfdc (1.0.0) added a flag to virDomainGetXMLDesc, but
failed to document its effects. And considering that the
MIGRATABLE flag has been the source of past bugs (CVE-2014-7823,
fixed in commit b1674ad5 (1.2.11), or even cf2d4c60 (1.2.13) where
flag mismatch broke virsh edit), make the wording wishy-washy
enough to discourage using the flag casually, by mentioning that
the resulting XML is more for internal use than for validation
against the schema.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Due to historical back-compat, bare 'virsh snapshot-create-as'
favors internal snapshots (but can't be used on domains with raw
storage), while 'virsh snapshot-create-as --disk-only' favors
external snapshots. What's more, snapshots created with
--disk-only while the domain was running are marked as snapshot
state 'disk-snapshot', while snapshots created while the domain
was offline are marked as snapshot state 'shutdown' (a
'disk-snapshot' image might not be quiescent, while a 'shutdown'
snapshot always is).
But this leads to some interesting problems: if we create a
--disk-only snapshot of an offline guest, and then immediately try
to 'virsh snapshot-create --redefine' using the resulting XML to
overwrite the existing snapashot in place, things silently succeed,
but 'virsh snapshot-create --redefine --disk-only' fails with an
error message that the snapshot state is not 'disk-only'. Worse,
if we delete the snapshot metadata first and then try to recreate
things, omitting --disk-only fails because the verification code
wants to force the default of an internal snapshot (which doesn't
work with raw disks), and using --disk-only still fails because the
snapshot XML is not 'disk-only' - making it impossible to recreate
the snapshot metadata (or to transfer it from one libvirtd host to
another). Ideally, the presence or absence of the --disk-only
flag, and the presence or absence of an existing snapshot being
overwritten, shouldn't matter; if the XML is valid for one
situation, it should always be valid to redefine the metadata for
that snapshot.
Fix things by uniformly using virDomainSnapshotDefIsExternal()
(caching the results up front, and eliminating other 'if' clauses
now rendered redundant) when deciding whether the XML being
requested for redefinition should permit external or force internal
state capture (we got it right in only one out of three places in
the function).
See also https://bugzilla.redhat.com/1680304; this fixes the
domain-agnostic problems mentioned there, but another patch is
needed to fix further oddities with the qemu driver. I did not
check for sure when the problems were introduced (git blame puts
some affected hunks as far back as 1.0.0), but it was definitely
been broken even before when commit 670e86bf (1.1.4) factored
redefine prep out of qemu code into the common snapshot_conf code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Upcoming patches plan to introduce virDomainCheckpointPtr as a new
object for use in incremental backups, along with documentation on
how incremental backups differ from snapshots. But first, we need
to rename any existing mention of a 'system checkpoint' to instead
be a 'full system snapshot', so that we aren't overloading
the term checkpoint.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
vcpupin will fail when maxvcpus is larger than current
vcpu:
virsh vcpupin win7 --vcpu 0 --cpulist 5-6
error: Requested operation is not valid: cpu affinity is not supported
win7 xml in the command above is like below:
...
<vcpu current="3" placement="static">8</vcpu>
...
The reason is vcpu[3] and vcpu[4] have zero tids and should not been
compared as valid situation in qemuDomainRefreshVcpuInfo().
This issue is introduced by commit 34f7743, which fix recording of vCPU
pids for MTTCG.
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Added GPFS as shared file system recognized during live migration
security checks.
GPFS is 'IBM General Parallel File System' also called
'IBM Spectrum Scale'
BUG: https://bugzilla.redhat.com/show_bug.cgi?id=1679528
Signed-off-by: Diego Michelotto <diego.michelotto@cnaf.infn.it>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The structure used to handle network entries was based on 'if,else'
conditions. This commit converts this ugly structure into a switch to
clearify each option of the handler.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Extract out the network "type" processing into it's own method
rather than inline within lxcNetworkParseDataSuffix.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This commit removes the full network entry setting: "lxc.network.X" to
type only. Like "type", "name", "flags", etc. This will handle entries
regardless of whether they are prefixed by "lxc.network." (today) or
"lxc.net.X." (the future).
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Refactor lxcNetworkWalkCallback to be a simple method to handle
both possible network settings with indexes or the simple one. It is
better the decouple the whole algorithm to parse data to only parse
which entry type libvirt is handling.
The new method is responsible to verify is the settings correspond to
network entry. Right now, it is only verifying "lxc.network.", but in
the future, it can be used to verify "lxc.net.X." too. Any other case
would be rejected.
On the other hand, the idea here is working only with types. If we know
that entry is part of network settings, after we just need to know which
type is. It keeps the handler simple.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The new method called lxcNetworkParseDataIPs() is responsible to handle
IPv{4,6} settings now. The idea is let lxcNetworkWalkCallback() method
handle all entries related to network definition only.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
libvirt_iohelper is used internally by the virFileWrapperFd APIs;
more specifically, in the QEMU driver we have the doCoreDump() and
qemuDomainSaveMemory() helper functions as users, and those in turn
end up being called by the implementation of several driver APIs.
By calling virReportError() if libvirt_iohelper has failed, we
overwrite whatever generic error message QEMU might have raised
with the more useful one generated by the helper program.
After this commit, the user will be able to see the error directly
instead of having to dig in the journal or libvirtd log.
https://bugzilla.redhat.com/show_bug.cgi?id=1578741
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virFileWrapperFdFree(), like all free functions, is supposed
to only release allocated resources, so error reporting is
better suited for virFileWrapperFdClose().
This reverts commit b0c3e93180.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Right now we're reporting errors in virFileWrapperFdFree(),
but that's hardly the appropriate place to do so, as free
functions are supposed to do nothing more than release
allocated resources.
We want to move that code back into virFileWrapperFdClose(),
but before we can do that we need to make sure the function
is actually called every time we're done processing the
wrapped file. The cleanup path is the obvious candidate.
In a couple of cases we can just move the call, but for the
remaining ones we need to duplicate it instead in order not
to alter the existing behavior. We do, however, make sure
that in all cases a failure to properly close the wrapper
results in the overall operation being reported as failed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'll want to use this function in the cleanup path soon,
and in order to be able to do that we need to make sure we
can call it multiple times on the same virFileWrapperFd
without side effects.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace virDomainChrSourceDefFree with virObjectUnref.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Use refcounting for priv->monConfig instead of asymmetric freeing.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Change fb01e1a44 "virt-aa-helper: generate rules for gl enabled
graphics devices" implemented the detection for gl enabled
devices in virt-aa-helper. But further testing showed
that it will need much more access for the full gl stack
to work.
Upstream apparmor just recently split those things out and now
has two related abstractions at
https://gitlab.com/apparmor/apparmor/blob/master:
- dri-common at /profiles/apparmor.d/abstractions/dri-common
- mesa: at /profiles/apparmor.d/abstractions/mesa
If would be great to just include that for the majority of
rules, but they are not yet in any distribution so we need
to add rules inspired by them based on the testing that we
can do.
Furthermore qemu with opengl will also probe the backing device
of the rendernode for attributes which should be safe as
read-only wildcard rules.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1815452
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Change fb01e1a44 "virt-aa-helper: generate rules for gl enabled
graphics devices" implemented the detection for gl enabled
devices in virt-aa-helper. But it will in certain cases e.g. if
no rendernode was explicitly specified need to read /dev/dri
which it currently isn't allowed.
Add a rule to the apparmor profile of virt-aa-helper itself to
be able to do that.
Acked-by: Jamie Strandboge <jamie@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Add a bhyveDomainDefNeedsISAController() helper function
which by domain configuration determines whether LPC controller is
required or not.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Implement the MSRs ignore unknown reads and writes feature
that's specified using:
<features>
...
<msrs unknown='ignore'>
...
</features>
in the domain XML.
In bhyve, it's just passing '-w' command line argument to the bhyve(8)
executable.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Introduce the 'msrs' feature element that controls Model Specific
Registers related behaviour. At this moment it allows only
single tunable attribute "unknown":
<msrs unknown='ignore|fault'/>
Which tells hypervisor to ignore accesses to unimplemented
Model Specific Registers. The only user of that for now is going
to be the bhyve driver.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Replace all uses where virBuffer would need clearing on the cleanup
path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
virBuffer is almost always stack-allocated, but requires freeing of the
internals on error. Introduce a VIR_AUTOCLEAN function to deal with
this.
Along with the addition add a test which would leak the buffer contents
if it weren't autocleaned.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The new utility macros are useful for variables we put on the stack but
require some cleanup. The most prominent of those is virBuffer which is
used almost exclusively in that way.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The conversion to VIR_AUTOFREE of 'escapeList' introduced memory leak of
the copied item to be escaped:
==17517== 2 bytes in 1 blocks are definitely lost in loss record 1 of 32
==17517== at 0x483880B: malloc (vg_replace_malloc.c:309)
==17517== by 0x54D666D: strdup (in /usr/lib64/libc-2.28.so)
==17517== by 0x497663E: virStrdup (virstring.c:956)
==17517== by 0x497663E: virStrdup (virstring.c:945)
==17517== by 0x48F8853: virBufferEscapeN (virbuffer.c:707)
==17517== by 0x403C9D: testBufEscapeN (virbuftest.c:383)
==17517== by 0x405FA8: virTestRun (testutils.c:174)
==17517== by 0x403A70: mymain (virbuftest.c:517)
==17517== by 0x406BC9: virTestMain (testutils.c:1097)
==17517== by 0x5470412: (below main) (in /usr/lib64/libc-2.28.so)
[...] (all other have same backtrace as it happens in a loop)
Fix it by reverting all the VIR_AUTO nonsense in this function as there
is exactly one place where it's handled.
This effectively reverts commits:
d0a92a037196fbf6df90d261ed2fb1
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'virBufferFreeAndReset' does not free the top level structure itself.
Additionally we almost exclusively use stack'd buffers rather than
pointers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
dnsmasq documentation says that the *IPv4* prefix/network
address/broadcast address sent to dhcp clients will be automatically
determined by dnsmasq by looking at the interface it's listening on,
so the original libvirt code did not add a netmask to the dnsmasq
commandline (or later, the dnsmasq conf file).
For *IPv6* however, dnsmasq apparently cannot automatically determine
the prefix (functionally the same as a netmask), and it must be
explicitly provided in the conf file (as a part of the dhcp-range
option). So many years after IPv4 DHCP support had been added, when
IPv6 dhcp support was added the prefix was included at the end of the
dhcp-range setting, but only for IPv6.
A user had reported a bug on a host where one of the interfaces was a
superset of the libvirt network where dhcp is needed (e.g., the host's
ethernet is 10.0.0.20/8, and the libvirt network is 10.10.0.1/24). For
some reason dnsmasq was supplying the netmask for the /8 network to
clients requesting an address on the /24 interface.
This seems like a bug in dnsmasq, but even if/when it gets fixed
there, it looks like there is no harm in just always adding the
netmask to all IPv4 dhcp-range options similar to how prefix is added
to all IPv6 dhcp-range options.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This fixes a bug that has been present since the original version of
the function was pushed in commit 1ab80f3 on Nov. 26 2010 (by me). The
virSocketAddr::len was not being set.
Apparently until now we were always calling
virSocketAddrPrefixToNetmask with virSocketAddr object that was
already (coincidentally) initialized for the proper address family,
but the bug became apparent when trying to use it to fill in an
otherwise uninitialized object.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Most of the code base is fairly consistent about using the name
'uuidstr' when dealing with a formatted human-readable form, and
'uuid' when dealing with the smaller raw bytes form. Fix
snapshot_conf to comply, as well as reducing the scope of a human
string to only the error message that needs it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signal the udev thread the change of `priv->threadQuit` by using the
thread condition.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If the udev thread is stopped, it must be ensured that the watch
handle is also removed from the main loop.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The iohelper is an internal program that's only supposed to
be called by libvirt, and whatever output it might produce
will ultimately be passed to virReportError() or similar.
Since we do not want strings passed to those functions to
contain newlines, we can simply not output them in the first
place.
This is what happens in pretty much all cases already, but
in a couple instances newlines have managed to slip in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Commit f609cb85 (0.9.5) introduced virDomainSnapshotGetXMLDesc()'s use
of @flags as a subset of virDomainXMLFlags, documenting that 2 of the
3 flags defined at the time would never be valid. Later, commit
28f8dfdc (1.0.0) introduced a new flag, VIR_DOMAIN_XML_MIGRATABLE, but
did not adjust the snapshot documentation to declare it as invalid.
However, since the flag is not accepted as valid by any of the
drivers (remote is just passthrough; esx and vbox don't support flags;
qemu, test, and vz only support VIR_DOMAIN_XML_SECURE), and it is
unlikely that the domain state saved off during a snapshot creation
needs to be migration-friendly (as the snapshot is not the source of
a migration), it is easier to just define an explicit set of supported
flags directly related to the snapshot API rather than trying to
borrow from domain API, and risking confusion if even more domain
flags are added later (in fact, I have an upcoming patch that plans to
add a new flag to virDomainGetXMLDesc that makes no sense for
snapshots).
There is no API or ABI impact (since we purposefully used unsigned int
rather than an enum type in public API, and since the new flag name
carries the same value as the reused name).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Commit d2a929d4 (0.9.4) defined virDomainSaveImageGetXMLDesc()'s use
of @flags as a subset of virDomainXMLFlags, documenting that 2 of the
3 flags defined at the time would never be valid. Later, commit
28f8dfdc (1.0.0) introduced a new flag, VIR_DOMAIN_XML_MIGRATABLE, but
did not adjust the save image documentation to declare it as invalid.
Later, commit a67e3872 (3.7.0) blindly copied and pasted the same text
into virDomainManagedSaveGetXMLDesc.
However, since the flag is not accepted as valid by any of the
drivers (remote is just passthrough; and qemu is the only supporting
driver for either API, with support for just VIR_DOMAIN_XML_SECURE),
it is easier to just define an explicit set of supported flags
directly related to the save image API rather than trying to borrow
from live domain API, and risking confusion if even more domain flags
are added later (in fact, I have an upcoming patch that plans to add
a new flag to virDomainGetXMLDesc that makes no sense for saved
images). We may someday decide that saved images need to support the
_MIGRATABLE flag, as it is possible to load a saved image with a
different version of libvirt than the one that created it, but that
can be a separate patch if it is ever needed. Meanwhile, it DOES make
sense to reuse the same flags for SaveImage and for ManagedSave (since
ManagedSave is really just sugar for creating a normal SaveImage in a
location controlled by libvirt instead of by the user).
There is no API or ABI impact (since we purposefully used unsigned int
rather than an enum type in public API, and since the new flag name
carries the same value as the old reused name).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Although VIR_DOMAIN_DEF_FORMAT_INACTIVE and VIR_DOMAIN_XML_INACTIVE
happen to have the same value (1<<1), they come from different enums;
and it is nicer to reason about a 'flags' variable if all uses of
that variable are compared against the same enum type. Messed up in
commit 06f75ff2 (3.8.0).
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Many drivers had a comment that they did not validate the incoming
'flags' to virDomainGetXMLDesc() because they were relying on
virDomainDefFormat() to do it instead. This used to be the case
(at least since 461e0f1a and friends in 0.9.4 added unknown flag
checking in general), but regressed in commit 0ecd6851 (1.2.12),
when all of the drivers were changed to pass 'flags' through the
new helper virDomainDefFormatConvertXMLFlags(). Since this helper
silently ignores unknown flags, we need to implement flag checking
in each driver instead.
Annoyingly, this means that any new flag values added will silently
be ignored when targeting an older libvirt, rather than our usual
practice of loudly diagnosing an unsupported flag. Add comments
in domain_conf.[ch] to remind us to be extra vigilant about the
impact when adding flags (a new flag to add data is safe if the
older server omitting the requested data doesn't break things in
the newer client; a new flag to suppress data rather than enhancing
the existing VIR_DOMAIN_XML_SECURE may form a data leak or even a
security hole).
In the qemu driver, there are multiple callers all funnelling to
qemuDomainDefFormatBufInternal(); many of them already validated
flags (and often only a subset of the full set of possible flags),
but for ease of maintenance, we can also check flags at the common
helper function.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
qemuProcessQMPStart starts a QEMU process and monitor connection that
can be used by multiple functions possibly for multiple QMP commands.
The QMP exchange to exit capabilities negotiation mode and enter command
mode can only be performed once after the monitor connection is
established.
Move responsibility for entering QMP command mode into the
qemuProcessQMP code so multiple functions can issue QMP commands in
arbitrary orders.
This also simplifies the functions using the connection provided by
qemuProcessQMPStart to issue QMP commands.
Test code now needs to call qemuMonitorSetCapabilities to send the
message to switch to command mode because the test code does not use the
qemuProcessQMP command that internally calls qemuMonitorSetCapabilities.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Multiple QEMU processes for QMP commands can operate concurrently.
Use a unique directory under libDir for each QEMU process to avoid
pidfile and unix socket collision between processes.
The pid file name is changed from "capabilities.pidfile" to "qmp.pid"
because we no longer need to avoid a possible clash with a qemu domain
called "capabilities" now that the processes artifacts are stored in
their own unique temporary directories.
"Capabilities" was changed to "qmp" in the pid file name because these
processes are no longer specific to the capabilities usecase and are
more generic in terms of being used for any general purpose QMP message
exchanges with a QEMU process that is not associated with a domain.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Users qemuProcessQMP struct were always forced to call both
qemuProcessQMPStop and qemuProcessQMPFree when they are done with the
process. We can just call qemuProcessQMPStop from qemuProcessQMPFree and
let users call qemuProcessQMPFree only.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemuProcessQMPNew is one of the public functions used to create and
manage a QEMU process for QMP command exchanges outside of domain
operations.
Add descriptive comment block, debug statement and make source
consistent with the cleanup / VIR_STEAL_PTR format used elsewhere.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The monitor config data is removed from the qemuProcessQMP struct.
The monitor config data can be initialized immediately before call to
qemuMonitorOpen and does not need to be maintained after the call
because qemuMonitorOpen copies any strings it needs.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move code for setting paths and prepping file system from
qemuProcessQMPNew to qemuProcessQMPInit.
This keeps qemuProcessQMPNew limited to data structures and path
initialization is done in qemuProcessQMPInit.
The patch is a non-functional, cut / paste change, however goto is now
"cleanup" rather than "error".
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Store libDir path in the qemuProcessQMP struct in anticipation of moving
path construction code into qemuProcessQMPInit function.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All code related to QEMU monitor is moved from qemuProcessQMPNew and
qemuProcessQMPInit into qemuProcessQMPConnectMonitor.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a replacement for qemuProcessQMPRun to make the name consistent
with qemuProcessStart. The original qemuProcessQMPRun function is
renamed as qemuProcessQMPLaunch and becomes one of the simpler functions
called from the main qemuProcessQMPStart entry point. The following
patches will move parts of the code in qemuProcessQMPLaunch to the other
functions (qemuProcessQMPInit and qemuProcessQMPConnectMonitor).
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Keep the pointer to QEMU stderr output in qemuProcessQMP struct instead
of requiring the caller to provide it (and free it).
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's push the call to virQEMUCapsLogProbeFailure down the stack to
where the probing failure is detected.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While qemuProcessQMPRun and virQEMUCapsInitQMPMonitor* functions called
from virQEMUCapsInit ignore some errors, the caller of virQEMUCapsInit
would report an error unless usedQMP is true anyway. And since usedQMP
can only be true if the probing code really succeeded (i.e., no errors
were ignored), we can just simplify the logic by not ignoring the errors
in the first place.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function contains two almost identical parts. Let's consolidate them
into a single helper function and call it twice.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In new process code, move from model where qemuProcessQMP struct can be
used to activate a series of Qemu processes to model where one
qemuProcessQMP struct is used for one and only one Qemu process.
By allowing only one process activation per qemuProcessQMP struct, the
struct can safely store process outputs like status and stderr, without
being overwritten, until qemuProcessQMPFree is called.
By doing this, process outputs like status and stderr can remain stored
in the qemuProcessQMP struct without being overwritten by subsequent
process activations.
The forceTCG parameter (use / don't use KVM) will be passed when the
qemuProcessQMP struct is initialized since the qemuProcessQMP struct
won't be reused.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virQEMUCapsInitQMP now stops QEMU process in all execution paths,
before freeing the process structure.
The qemuProcessQMPStop function can be called multiple times without
problems... Won't attempt to stop processes and free resources multiple
times.
Follow the convention established in qemu_process of
1) alloc process structure
2) start process
3) use process
4) stop process
5) free process data structure
The process data structure persists after the process activation fails
or the process dies or is killed so stderr strings can be retrieved
until the process data structure is freed.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
s/qemuProcessQMPAbort/qemuProcessQMPStop/ applied to change function
name used to stop QEMU processes in process code moved from
qemu_capabilities.
No functionality change.
The new name, qemuProcessQMPStop, is consistent with the existing
function qemuProcessStop used to stop Domain processes.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
s/cmd/proc/ in process code imported from qemu_capabilities.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add the const qualifier on non modified strings
(string only copied inside qemuProcessQMPNew)
so that const strings can be used directly in calls to
qemuProcessQMPNew in future patches.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
QEMU process code in qemu_capabilities.c is moved to qemu_process.c in
order to make the code usable outside the original capabilities use
cases.
The moved code activates and manages QEMU processes without establishing
a guest domain.
This patch is a straight cut/paste move between files.
Signed-off-by: Chris Venteicher <cventeic@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Only one of the three callers of virPCIDeviceAddressFormat correctly
handles an error return status. Fortunately it can't fail so can be
made void.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The newline was pretty arbitrary, and we're better off
without it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The memory allocated by VIR_REALLOC_N() is uninitialized,
which means it's not possible to figure out whether any
output was produced at all after the fact.
Since we don't care about the previous contents of buffers,
if any, use VIR_FREE() followed by VIR_ALLOC_N() instead.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Remove unused variable. Fix for [1]
[1] 821dd6d8: storage: Use VIR_AUTOFREE for storage backends
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
We dropped support in commit 8e91a40 (November 2015), but some
occurrences still remained, even in live code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reported-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that virStorageSource is a subclass of virObject we can use
virObjectUnref and remove virStorageSourceFree which was a thin wrapper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Since virStorageSource is now a subclass of virObject, we can use
VIR_AUTOUNREF instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add helper for utilizing __attribute__(cleanup())) for unref-ing
instances of sublasses of virObject.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
To allow tracking a single virStorageSource in multiple structures
without extra hassle allow refcounting by turining it into an object.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add virStorageSourceNew and refactor places allocating that structure to
use the helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use the proper function to allocate a disk definition.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Now that we've moved all the actual code into helper
functions, we can turn it into a switch statement.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Minor tweaks to ensure compliance with our coding style.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The libvirt zonefile for firewalld (added in commit 3b71f2e4) does the
following:
1) lists specific services it wants to allow, then
2) uses a lower priority <reject/> rule to block all other services to
the host, and then finally,
3) relies on the zone's default "accept" policy to, accept all
forwarded traffic (since forwarded traffic is ignored by the
slightly higher priority <reject/> rule in (2)).
I had assumed that icmp traffic was either being allowed at the top of
the rules, or that it would be ignored by the <reject/> rule and
passed by the default accept policy (similar to forwarded traffic),
but this assumption was incorrect; the <reject/> rule does block icmp
traffic. This became apparent when DHCPv6 which requires ICMPv6 in
addition to udp/dhcpv6) failed to work.
This all means that in order to achieve our original goal of "similar
behavior to a default reject policy, but also allowing forwarded
traffic", we need to add rules to allow all icmp and icmpv6 traffic to
the libvirt zone, and that's what this patch does.
This is a further refinement of the resolution to
https://bugzilla.redhat.com/1650320
Signed-off-by: Laine Stump <laine@laine.org>
Acked-by: Eric Garver <eric@garver.life>
My change in 112f3a8d0f was too drastic. The @charAlias
variable is initialized only if @monitor == true. However, it is
used even outside of that condition, at which point it's just
uninitialized pointer.
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Even if an error is reported by `udev_enumerate_scan_devices`,
e.g. because a driver of a device has an bug, we can still enumerate
all other devices. Additionally the documentation of
udev_enumerate_scan_devices says that on success an integer >= 0 is
returned (see man udev_enumerate_scan_devices(3)).
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Another misleadingly named macro.
Deprecate in favor of NULLSTR_STAR.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This macro neither takes nor produces an empty string.
Remove it in favor of NULLSTR_MINUS.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
NULLSTR_EMPTY, the quiet child,
NULLSTR_STAR, the famous one and
NULLSTR_MINUS, the grumpy one.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The @tmpChr is looked up in domain definition based on user
provided chardev XML. Therefore, the alias must have been
allocated already when domain was started up.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This is basically an old artefact from 24b0821926 when the idea
was:
1) Build device string only to see if chardev has any -device
associated with it and thus if device_del is needed
2) Detach chardev using chardev_del
Now, that DEVICE and DEVICE_DELETED capabilities are assumed for
every domain 1) does not make sense anymore.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624204
The guestfwd channels are -netdevs really. Hotunplug them as
such. Also, DEVICE_DELETED event is not triggered (surprisingly,
since we're not issuing device_del rather than netdev_del) and
associated chardev is removed automagically too. This means that
we need to do qemuDomainRemoveChrDevice() minus monitor call to
remove the chardev.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1624204
The guestfwd channels are -netdevs really. Hotplug them as such.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Introduced by d86c876a66.
There is no real need to have "user-" prefix for chardev.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
So far we are passing @chr to qemuBuildChrDeviceStr. This is
suboptimal (in fact wrong) because @chr is just parsed XML
definition provided by user which by definition may lack some
information. On the other hand, @tmpChr is the one that was found
using @chr in domain definition so it contains the same amount of
information or more.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The code for creating external snapshots for an offline domain
called out to qemu-img without escaping commas in the manner
that qemu-img expects. This also fixes a typo in the comment.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
