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>
