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>
Move DO_TEST* qemuCaps init into testInfoSetArgs. This is a step
towards unifying the different test macro implementations
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is closer to the pattern of qemuxml2xml tests, and will make
things easier if we extend testInfo to contain more freeable data
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Rather than make callers do it. The operative info is just arch
and ver which we are passing in already.
Fold in stripmachinealiases too since it is just dependent on
ver value
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
They are potentially useful at the moment, but we will be making
things much more flexible
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop parseFlags from DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop migrateFrom and migrateFd from DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This allows us to drop stub GIC values from DO_TEST_FULL calls
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is necessary before we can start adding more optional parameter
implementations to DO_TEST_FULL
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This establishes a pattern that will allow us to make test macros
more general purpose, by taking optional arguments. The general
format will be:
DO_TEST_FULL(...
ARG_FOO, <value1>,
ARG_BAR, <value2>)
ARG_X are just enum values that we look for in the va_args and know
how to interpret.
Implement this for the existing implicit qemuCaps va_args
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
For now it just fills in the qemuCaps list. We will expand it
in future patches
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@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>
We previously had to disable RBD on 32-bit platforms since Ceph has
dropped all support for 32-bit. Unfortunately anyone with the RPM
libvirt-daemon-driver-storage-rbd installed on 32-bit now has a
broken upgrade path.
To fix this we must make libvirt-daemon-driver-storage-core
have an Obsoletes: libvirt-daemon-driver-storage-rbd < $VER-$REL
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@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>
