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>
