Typical usage:
void foobar(virObjectLockable *obj)
{
VIR_LOCK_GUARD lock = virObjectLockGuard(obj);
/* `obj` is locked, and released automatically on scope exit */
...
}
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Locks a virMutex on creation and unlocks it in its destructor.
The VIR_LOCK_GUARD macro is used instead of "g_auto(virLockGuard)" to
work around a clang issue (see https://bugs.llvm.org/show_bug.cgi?id=3888
and https://bugs.llvm.org/show_bug.cgi?id=43482).
Typical usage:
void function(virMutex *m)
{
VIR_LOCK_GUARD lock = virLockGuardLock(m);
/* `m` is locked, and released automatically on scope exit */
...
while (expression) {
VIR_LOCK_GUARD lock2 = virLockGuardLock(...);
/* similar */
}
}
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Refactor some cgroup management methods from qemu into hypervisor.
These methods will be shared with ch driver for cgroup management.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It was only used to construct the hash key for the (now removed)
shared devices in the qemu driver.
Remove it and its mocking.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Now that the 'unfiltered' attribute is rejected by the validator,
remove all the code that deals with the feature.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
unpriv_sgio was a downstream-only feature in RHEL 6-8.
The libvirt support was merged upstream by mistake.
Remove the function that constructs the sysfs path and assume it
does not exist in all the callers.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
'virDomainSnapshotRedefinePrep' does everything needed for a redefine
when the snapshot exists but not when we are defining metadata for a new
snapshot. This gives us weird semantics.
Extract the code for replacing the definition of an existing snapshot
into a new helper 'virDomainSnapshotReplaceDef' and refactor all
callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Export 'virDomainMomentObjNew' and 'virDomainMomentObjFree' and define
the latter as autoptr cleanup function for 'virDomainMomentObj'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Move qemuGetProcessInfo and qemuGetSchedInfo methods to util and share them
with ch driver.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The new helper replaces the 'value' part of the key-value tuple in an
object. The advantage of this new helper is that it preserves the
ordering of the key in the object when compared to a combination of
stealing the old key and adding a new value. This will be needed for a
new test/helper for validating and modifying qemu capabilities data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If needed 'virJSONValueIsNull' can be easily replaced by
'virJSONValueGetType(obj) == VIR_JSON_TYPE_NULL'.
'virJSONValueObjectIsNull' has confusing name because it checks that a
virJSONValue of OBJECT type has a key which is NULL, not that the object
itself is NULL. This can be replaced according to the needs e.g. by
virJSONValueObjectHasKey or the above check.
Both are unused.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
Replace the function by a call to virJSONValueNewString, when we copy
the string using g_strndup. Remove the unused helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
Now that we only check whether the dnsmasq version is new enough,
there is no need for the caps field.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
The logging manager is very closely tied to RPC. If we are
building without RPC support there's not much use for the
manager, in fact it fails to build.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This will be needed directly in the QEMU driver in a later patch.
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Since the currentBackend (direct vs. firewalld) setting is no longer
used for anything, we don't need to set it (either explicitly from
tests, or implicitly during init), and can completely remove it.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This function doesn't have anything to do with manipulating
virFirewall objects, but rather should be called in response to dbus
events about the firewalld service. Move this function into
virfirewalld.c, and rename it to virFirewallDSynchronize().
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This function formats an address + prefix as, e.g. 192.168.122.0/24,
which is useful in places other than iptables. Move it to
virsocketaddr.c and make it public so that others can use it. While
moving, the bit that masks off the host bits of the address is made
optional, so that the function is more generally useful.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The network driver has put all its rules into private chains (created
by libvirt) since commit 7431b3eb9a, which was included in
libvirt-5.1.0. When the conversion was made, code was included that
would attempt to delete existing rules in the default chains, to make
it possible to upgrade libvirt without restarting the host OS.
Almost 3 years has passed, and it is doubtful that anyone will be
attempting to upgrade directly from a pre-5.1.0 libvirt to something
as new as 8.0.0 (possibly with the exception of upgrading the entire
OS to a new release, which would include also rebooting), so it is now
safe to remove this code.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The function isn't used besides tests. Since the separator parsing
capability is trivial we can keep it in place and just unexport it for
now.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code was converted to stop using this function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The helpers will update the passed boolean if the tristate's value is
not _ABSENT.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QEMU domain capabilities code wants to quietly know whether swtpm is
available on the host.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Every other exported API from virtpm.h will internally call
virTPMEmulatorInit, so there is no reason for this initializer
to be exported on its own.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
It is useful to be able to deeply check them for equality.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The functions have very difficult semantics where callers are not able
to tell whether the property is missing or failed the length check. Only
the latter produces errors.
Since usage of the functions was phased out, remove them completely to
avoid further broken code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reads and separates all fields from /proc/<pid>/stat or
/proc/<pid>/task/<tid>/stat as there are easy mistakes to be done in the
implementation. Some tests are added to show it works correctly. No number
parsing is done as it would be unused for most of the fields most, if not all,
of the time. No struct is used for the result as the length can vary (new
fields can be added in the future).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
With this function we can decide whether to try running the polkit text agent
only if it is available, removing a potential needless error saying that the
agent binary does not exist, which is useful especially when running the agent
before knowing whether it is going to be needed.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The functions were obsoleted by virJSONValueObjectAdd(VArgs)
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This makes it possible to call virCPUDataParse with a xmlNodePtr,
which will be required by a later patch.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Extend the TPM backend XML with a node 'active_pcr_banks' that allows a
user to specify the PCR banks to activate before starting a VM. Valid
choices for PCR banks are sha1, sha256, sha384 and sha512. When the XML
node is provided, the set of active PCR banks is 'enforced' by running
swtpm_setup before every start of the VM. The activation requires that
swtpm_setup v0.7 or later is installed and may not have any effect
otherwise.
<tpm model='tpm-tis'>
<backend type='emulator' version='2.0'>
<active_pcr_banks>
<sha256/>
<sha384/>
</active_pcr_banks>
</backend>
</tpm>
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2016599
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add helper functions to virpci to provide means of checking for a VPD
file presence and for VPD resource retrieval using the PCI VPD parser.
The added test assesses the basic functionality of VPD retrieval while
the full parser is tested by virpcivpdtest.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dmitrii Shcherbakov <dmitrii.shcherbakov@canonical.com>
Add support for deserializing the binary PCI/PCIe VPD format and storing
results in memory.
The VPD format is specified in "I.3. VPD Definitions" in PCI specs
(2.2+) and "6.28.1 VPD Format" PCIe 4.0. As section 6.28 in PCIe 4.0
notes, the PCI Local Bus and PCIe VPD formats are binary compatible
and PCIe 4.0 merely started incorporating what was already present in
PCI specs.
Linux kernel exposes a binary blob in the VPD format via sysfs since
v2.6.26 (commit 94e6108803469a37ee1e3c92dafdd1d59298602f) which requires
a parser to interpret.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dmitrii Shcherbakov <dmitrii.shcherbakov@canonical.com>
Optimize the number of string copies by using the virBuffers in the
callers directly. Simplest way to achieve this is to just open code the
one function call 'virQEMUBuildDriveCommandlineFromJSON' was wrapping
in the two callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that everything was replaced by the new code we can remove this
function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Base the JSON output on a regular capability flag rather than purely
internal flag. This will prepare for the time when QEMU will accept JSON
argumets for -netdev.
For now the capability is not set (thus we for now don't have QMP
schema validation) but that will be addressed later.
To achieve this 'qemuBuildNetdevCommandlineFromJSON' is introduced
and all callers of 'virQEMUBuildNetdevCommandlineFromJSON' are
refactored to use the new helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As advertised in previous commit, this event is delivered to us
when virtio-mem module changes the allocation inside the guest.
It comes with one attribute - size - which holds the new size of
the virtio-mem (well, allocated size), in bytes.
Mind you, this is not necessarily the same number as 'requested
size'. It almost certainly will be when sizing the memory up, but
it might not be when sizing the memory down - the guest kernel
might be unable to free some blocks.
This current size is reported in the domain XML as an output
element only.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function will be needed in the next commit where we will
want to find virtio-mem given its alias by QEMU on the monitor.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As advertised in one of previous commits, we want to be able to
change 'requested-size' attribute of virtio-mem on the fly. This
commit does exactly that. Changing anything else is checked for
and forbidden.
Once guest has changed the allocation, QEMU emits an event which
we will use to track the allocation. In the next commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
New virHostMemGetTHPSize() is introduced which allows caller to
obtain THP PMD (Page Middle Directory) size, which is equal to
the minimal size that THP can use, taken from kernel doc
(Documentation/admin-guide/mm/transhuge.rst):
Some userspace (such as a test program, or an optimized memory allocation
library) may want to know the size (in bytes) of a transparent hugepage::
cat /sys/kernel/mm/transparent_hugepage/hpage_pmd_size
Since this size depends on the host architecture and the kernel
it won't change whilst libvirtd is running. Therefore, we can use
virOnce() and cache the value. Of course, we can be running under
kernel that has THP disabled or has no notion of THP at all. In
that case a negative value is returned to signal error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The test driver can share the same code with qemu driver when implement
testDomainGetIOThreadsConfig, so extract it for test driver to use.
Also add a new parameter `bitmap_size` to the function, it's used for
specifying the bitmap size of the bitmap to generate, it would be helpful
for test driver or some special situation.
Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The test driver can share the same code with qemu driver when implement
testDomainAddIOThreadCheck and testDomainDelIOThreadCheck, so extract
them for test driver to use.
Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It always returns true. Make the logic a bit simpler to see through.
This completely removes 'virCryptoHaveCipher' as it's pointless in the
current form.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
LUN disks are supported only by VMX and QEMU drivers and the VMX
implementation is a subset of qemu's implementation, thus we can move
the qemu-specific validator to the global validation code providing that
we allow the format to be 'none' (qemu driver always sets 'raw' if it's
not set) and allow disk type 'volume' as a source (qemu always
translates the source, and VMX doesn't implement 'volume' at all).
Moving the code to the global validation allows us to stop calling it
from the qemu specific validation and also deduplicates the checks.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Attaching a newly created vhostuser port to a VM fails due to an
apparmor denial
internal error: unable to execute QEMU command 'chardev-add': Failed
to bind socket to /run/openvswitch/vhu838c4d29-c9: Permission denied
In the case of a net device type VIR_DOMAIN_NET_TYPE_VHOSTUSER, the
underlying chardev is not labeled in qemuDomainAttachNetDevice prior
to calling qemuMonitorAttachCharDev.
A simple fix would be to call qemuSecuritySetChardevLabel using the
embedded virDomainChrSourceDef in the virDomainNetDef vhostuser data,
but this incurs the risk of incorrectly restoring the label. E.g.
consider the DAC driver behavior with a vhostuser net device, which
uses a socket for the chardev backend. The DAC driver uses XATTRS to
store original labelling information, but XATTRS are not compatible
with sockets. Without the original labelling information, the socket
labels will be restored with root ownership, preventing other
less-privileged processes from connecting to the socket.
This patch avoids overloading chardev labelling with vhostuser net
devices by introducing virSecurityManager{Set,Restore}NetdevLabel,
which is currently only implemented for the apparmor driver. The
new APIs are then used to set and restore labels for the vhostuser
net devices.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is just a small helper that will be used later.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Separate virNetDevOpenvswitchInterfaceClearQos into two steps. When setting
qos, we can set only rx or tx and the other one should be cleared.
Signed-off-by: zhangjl02 <zhangjl02@inspur.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
For new feature Fibre Channel VMID we will need to get inode of the
VM root cgroup as it is used in the new kernel API together with VMID.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
'virNetDevGetVirtualFunctions' calls 'virPCIGetVirtualFunctions' and
then re-iterates the returned list to fetch the interface names for the
returned virtual functions.
If we move the fetching of the interface name into
virPCIGetVirtualFunctions we can simplify the code and remove a bunch of
impossible error states.
To accomplish this the function is renamed to
'virPCIGetVirtualFunctionsFull' while keeping a wrapper with original
name and if the physical port ID is passed the interface name is fetched
too without the need to re-convert the address into a sysfs link.
For now 'virNetDevGetVirtualFunctions' still converts the returned data
into two lists.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a struct for holding the list of VFs returned by
virPCIGetVirtualFunctions so that we can employ automatic memory
clearing and also allow querying more information at once.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a generic function that you can provide your own predicate
function to search for a particular device. It will be used in an
upcoming commit.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The new wrapper calls virInsertElementInternal with the appropriate
arguments without any checks which are unnecessary for appension. This
allows to have no return value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add a version of virPidFileForceCleanupPath that takes
a 'group' bool argument and propagate it all the way
down to virProcessKillPainfullyDelay.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The test driver and qemu driver could share the same code in
virDomainGetMessages(), so extract it to a function.
Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Add helper function virHostCPUGetHaltPollTime to obtain halt polling
time. If the kernel support halt polling time statistic, and mount
debugfs. This function will take effect on KVM VMs.
Signed-off-by: Yang Fei <yangfei85@huawei.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use function virFileReadValueUllongQuiet to read unsigned long
long value without error report.
Signed-off-by: Yang Fei <yangfei85@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add support for customizable grabToggle key combinations with
<input type='evdev'>.
Signed-off-by: Justin Gatzen <justin.gatzen@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce qos setting and cleaning method. Use ovs command to set qos
parameters on specific interface of qemu virtual machine.
When an ovs port is created, we add 'ifname' to external-ids. When setting
qos on an ovs port, query its qos and queue. If found, change qos on queried
queue and qos, otherwise create new queue and qos. When cleaning qos, query
and clean queues and qos in ovs table record by 'ifname' and 'vmid'.
Signed-off-by: Jinsheng Zhang <zhangjl02@inspur.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Tell whether a port definition is an ovs managed virtual port
Signed-off-by: Jinsheng Zhang <zhangjl02@inspur.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When seeing a guest with a sound device, and no audio backend, we
automatically add an audio backend XML element based on the historical
QEMU driver behaviour. Unfortunately when we live migrate back to an
old libvirt, it may not understand the audio driver type we configured.
We thus need to strip the default audio backend when migrating.
Fixes https://gitlab.com/libvirt/libvirt/-/issues/179
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
It is possible to define/edit(in shut off state) a domain XML with
same hostdev device repeated more than once, as shown below. This
behavior is not expected. So, this patch fixes it.
vser1:
<domain type='kvm'>
[...]
<devices>
[...]
<hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
<source>
<address uuid='8e782fea-e5f4-45fa-a0f9-024cf66e5009'/>
</source>
<address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0005'/>
</hostdev>
<hostdev mode='subsystem' type='mdev' managed='no' model='vfio-ccw'>
<source>
<address uuid='8e782fea-e5f4-45fa-a0f9-024cf66e5009'/>
</source>
<address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0006'/>
</hostdev>
[...]
</devices>
</domain>
$ virsh define vser1
Domain 'vser1' defined from vser1
Signed-off-by: Shalini Chellathurai Saroja <shalini@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The new version allows passing a virBuffer to format the string into.
This will be helpful in solving a memory lean in wrong usage of
virCommandToString and also in tests where we need to add a newline
after the command in certain cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Expose virNumaInterconnect XML formatter so that it can be
re-used by other parts of the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
There's nothing domain specific about NUMA interconnects. Rename
the virDomainNumaInterconnect* structures and enums to
virNumaInterconnect*.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Expose virNumaCache XML formatter so that it can be re-used by
other parts of the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
There's nothing domain specific about NUMA memory caches. Rename the
virDomainCache* structures and enums to virNumaCache*.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
We supported autostart of node devices via an xml element, but this
is not consistent with other libvirt objects which use an explicit API
for setting autostart status. So revert this and implement it as an
official API in a future commit.
The initial support was refactored after merging, so this commit reverts
both of those previous commits.
Revert "virNodeDevCapMdevParseXML: Use virXMLPropEnum() for ./start/@type"
This reverts commit 9d4cd1d1cd.
Revert "nodedev: support auto-start property for mdevs"
This reverts commit 42a5585499.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virDomainNetRemove() requires the index of the net device you want to
remove from the list, but in some cases you may not have the index
handy, only the object itself (or the object may not have been added
to the domain's list). virDomainNetRemoveByObj() first tries to find
the given object in the nets list, and deletes that if it is found.
As with virDomainNetRemove() it always unconditionally tries to remove
the device from the hostdevs list (in case it is the ridiculous
combined net+hostdev device created for <interface type='hostdev'>).
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
So far, we have to places where we format <metadata/> into XMLs:
domain and network. Bot places share the same code. Move it into
a helper function and just call it from those places.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Replace the last use of the function by virDomainDiskInsert and remove
the unused helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Expose virNumaDistance XML formatter so that it can be re-used by
other parts of the code.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This adds a new element to the mdev capabilities xml schema that
represents the start policy for a defined mediated device. The actual
auto-start functionality is handled behind the scenes by mdevctl, but it
wasn't yet hooked up in libvirt.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is essentially a way to determine if the current identity
is that of another libvirt daemon.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When talking to the secret driver, the callers inside libvirt daemons
need to be able to run with an elevated privileges that prove the API
calls are made by a libvirt daemon, not an end user application.
The virIdentityElevateCurrent method will take the current identity
and, if not already present, add the system token. The old current
identity is returned to the caller. With the VIR_IDENTITY_AUTORESTORE
annotation, the old current identity will be restored upon leaving
the codeblock scope.
... early work with regular privileges ...
if (something needing elevated privs) {
VIR_IDENTITY_AUTORESTORE virIdentity *oldident =
virIdentityElevateCurrent();
if (!oldident)
return -1;
... do something with elevated privileges ...
}
... later work with regular privileges ...
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When creating the system identity set the system token. The system
token is currently stored in a local path
/var/run/libvirt/common/system.token
Obviously with only traditional UNIX DAC in effect, this is largely
security through obscurity, if the client is running at the same
privilege level as the daemon. It does, however, reliably distinguish
an unprivileged client from the system daemons.
With a MAC system like SELinux though, or possible use of containers,
access can be further restricted.
A possible future improvement for Linux would be to populate the
kernel keyring with a secret for libvirt daemons to share.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We want a way to distinguish between calls from a libvirt daemon, and a
regular client application when both are running as the same user
account. This is not possible with the current set of attributes
recorded against an identity, as there is nothing that is common to all
of the modular libvirt daemons, while distinct to all other processes.
We thus introduce the idea of a system token, which is simply a random
hex string that is only known by the libvirt daemons, to be recorded
against the system identity.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
A random token is simply a string of random bytes formatted in
hexidecimal.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The helper is almost identical to virXMLPropEnum but it allows to pass a
default value to initialize the result to.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
