The code handles XML bits and internal definition and should be
in conf directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The code handles XML bits and internal definition and should be
in conf directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Same as virStorageFileBackend, it doesn't belong into util directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
It's used only by storage file code so it doesn't make sense to have
it in util directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Up until now we had a runtime code and XML related code in the same
source file inside util directory.
This patch takes the runtime part and extracts it into the new
storage_file directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This code is not directly relevant to virStorageSource so move it to
separate file.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Introduce a new storage_file directory where we will keep storage file
related code. Add a backend prefix to the file name to separate it from
other future files with 'storage_file' prefix.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This will allow following patches to move virStorageSource into conf
directory and virStorageDriverData into a new storage_file directory.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
These files are using functions from virstoragefile.h but are missing
explicit include.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
When adding a rule for an image file and that image file has a chain
of backing files then we need to add a rule for each of those files.
To get that iterate over the backing file chain the same way as
dac/selinux already do and add a label for each.
Fixes: https://gitlab.com/libvirt/libvirt/-/issues/118
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Since Hyper-V allows multiple VMs to be created with the same name,
some commands produce unpredictable results due to
hypervDomainLookupByName's WMI query selecting the wrong domain.
For example, this prevents `virsh dumpxml` from outputting XML for the
wrong domain.
Signed-off-by: Matt Coleman <matt@datto.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It's better to fill in missing values in post parse callbacks
than during parsing.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The _virDomainMemoryDef structure has @uuid member which is
needed for PPC64 guests. No other architectures use it. Since the
member is VIR_UUID_BUFLEN bytes long, the structure is
unnecessary big. If the member is just a pointer then we can also
replace some calls of virUUIDIsValid() with plain test against
NULL and also simplify formatter code which can now also check
the pointer against NULL.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Now we have everything prepared for generating the command line.
The device alias prefix was chosen to be 'virtiopmem'.
Since virtio-pmem-pci device goes onto PCI bus generating device
alias must have been changed slightly because
qemuAssignDeviceMemoryAlias() might have used DIMM slot number to
generate the alias. This obviously won't work and thus the "old"
way (which includes qemuDomainDeviceAliasIndex()) must be used.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1735375
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Some users might want to have virtio-pmem backed by a block device
in which case we have to create the device in the domain private
namespace.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Some users might want to have virtio-pmem backed by a block
device in which case we have to allow the device in CGroups.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Just like with NVDIMM model, we have to relabel the path to
virtio-pmem so that QEMU can access it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
The virtio-pmem is a virtio variant of NVDIMM and just like
NVDIMM virtio-pmem also allows accessing host pages bypassing
guest page cache. The difference is that if a regular file is
used to back guest's NVDIMM (model='nvdimm') the persistence of
guest writes might not be guaranteed while with virtio-pmem it
is.
To express this new model at domain XML level, I've chosen the
following:
<memory model='virtio-pmem' access='shared'>
<source>
<path>/tmp/virtio_pmem</path>
</source>
<target>
<size unit='KiB'>524288</size>
</target>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memory>
Another difference between NVDIMM and virtio-pmem is that while
the former supports NUMA node locality the latter doesn't. And
also, the latter goes onto PCI bus and not into a DIMM module.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit introduces a new capability that reflects virtio-pmem-pci
device support in qemu:
QEMU_CAPS_DEVICE_VIRTIO_PMEM_PCI, /* -device virtio-pmem-pci */
The virtio-pmem-pci device was introduced in QEMU 4.1.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
In the past, the MTU of libvirt virtual network bridge devices was
implicitly set by setting the MTU of the "dummy tap device" (which was
being added in order to force a particular MAC address from the
bridge). But the dummy tap device was removed in commit ee6c936fbb
(libvirt-6.8.0), and so the mtu setting in the network is ignored.
The solution is, of course, to explicitly set the bridge device MTU
when it is created.
Note that any guest interface with a larger MTU that is attached will
cause the bridge to (temporarily) assume the larger MTU, but it will
revert to the bridge's own MTU when that device is deleted (this is
not due to anything libvirt does; it's just how Linux host bridges
work).
Fixes: ee6c936fbb
Resolves: https://bugzilla.redhat.com/1913561
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
managed='no' on an <interface> allows an unprivileged libvirt to use a
pre-created tap/macvtap device that libvirt has permission to
open/read/write, but no permission to modify (i.e. set the MTU or MAC
address). But when the XML had an <mtu size='blah'/> setting (which
was put there in order to tell the *guest* OS what MTU to set for the
emulated device at the other end of the tap) we were attempting to set
the MTU of the tap device on the host, paying no attention to the
setting of 'managed'. That would of course end in failure.
This patch only sets the MTU if managed='no' is *not* set (so, if it
is 'yes', or just not set at all).
Note that MTU of the tap is also set when connecting the tap to a
bridge device, but managed='no' is only allowed for <interface
type='ethernet'>, which would never attach to a bridge anyway, so we
don't need the check there.
Resolves: https://bugzilla.redhat.com/1905929
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Extract common code as helper function virNetlinkTalk, then simplify
the functions virNetlink[DumpLink|NewLink|DelLink|GetNeighbor].
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Introduce a macro NETLINK_MSG_APPEND to wrap nlmsg_append and
simplify code. Remove those labels 'buffer_too_small', since they
are now useless.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Move macros NETLINK_MSG_[NEST_START|NEST_END|PUT] from .h into .c;
within these macros, replace 'goto' with reporting error and returning;
simplify virNetlinkDumpLink and virNetlinkDelLink by using NETLINK_MSG_PUT.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
NLM_F_CREATE and NLM_F_EXCL are invalid for RTM_DELLINK,
so remove them.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 154df5840d added support for <metadata_cache> as property of a
<disk>. Since the same parser is used to parse the XML used with
virDomainBlockCopy it starts the copy job with the appropriate cache
configured, but the <mirror> doesn't show this configuration nor it's
preserved if libvirtd is restarted during the mirror.
Add parsing, formatting and tests for <metadata_cache> for a <mirror>.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Depending on the memballoon model, the corresponding QOM node
will have a different type and we need to account for this
when searching for it in the QOM tree.
https://bugzilla.redhat.com/show_bug.cgi?id=1911786
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When a block job is terminated we should clear the 'mirrorState' and
'mirrorJob' variables so that stale values are not present prior to a
new job.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the per-job state to determine when the non-shared-storage mirror is
complete rather than the per-disk definition one. The qemuBlockJobData
is a newer approach and is always cleared after the blockjob is
terminated while the 'mirrorState' variable in the definition of the
disk may be left over. In such case the disk mirror would be considered
complete prematurely.
https://bugzilla.redhat.com/show_bug.cgi?id=1889131
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
So far we assumed that any vhostuser interface is plugged into an
OVS bridge and thus 'ovs-vsctl' exists. But this is not always
true. In testing scenarios it is possible to create a vhostuser
interface with this tool dpdk-testpmd (part of dpdk RPM) which
creates/connects to UNIX socket needed for vhostuser. Of course,
since there is no OVS then there is no interface name in which
case virNetDevOpenvswitchGetVhostuserIfname() should return 0.
The rest of APIs that assume OVS are not 'fixed' because we still
want them to fail (e.g. getting statistics, plugging interface
into an OVS bridge, unplugging it from an OVS bridge, ...).
The only API that is fixed is
virNetDevOpenvswitchGetVhostuserIfname() because it is called
explicitly when starting a guest (and callers are okay if no name
was found).
The other way to fix this bug seems to be to simply require
'ovs-vsctl' on spec file level, but that is too heavy gun given
that vhostuser is used by a small set of our users (assumption
made on requirements for vhostuser). Also, this way would drag in
yet another dependency for all users (even those who want minimal
libvirt).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1913156
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that this function can be called regardless of interface type (and
whether or not we have a conn for the network driver), let's actually
call it for all interface types. This will assure that we re-connect
any disconnected bridge devices for <interface type='bridge'> as
mentioned in https://bugzilla.redhat.com/show_bug.cgi?id=1730084#c26
(until now we've only been reconnecting bridge devices for <interface
type='network'>)
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The bridge reattach functionality in this function should be called
for interface types other than just type='network', so make it
callable for any type - it just becomes a NOP for types where no
action is needed.
In the case of <interface type='network'> we need to create a port in
the network driver, and for both type='network and type='bridge' we
need to reattach the bridge device (note that
virDomainNetGetActualBridgeName() gets the bridge name from the
appropriate (and different!) location for either type of interface).
All other interfaces currently require no action.
modifying callers of this function to actually call it for all
interface types is in the next patch. For now the behavior should be
identical pre and post-patch.
(NB: the conn argument can now legitimately be NULL, so we need to
change the ATTRIBUTE_NONNULL() directive for the function's
declaration - I noticed when making this change that argument 3 (the
NetDefPtr) could never be NULL, so I added ATTRIBUTE_NONNULL(3) while
removing ATTRIBUTE_NONNULL(1) (conn)).
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>Reviewed-by: Michal Privoznik <mprivozn@redhat.com>#Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
dnsmasq usually prints out a version string like this:
Dnsmasq version 2.82 [...]
but a user reported that the build of dnsmasq included with pihole has
a version string like this:
Dnsmasq version pi-hole-2.81 [...]
We parse the dnsmasq version number to figure out if the dnsmasq
binary supports certain features. Since we expect the version number
(and it must be only numbers!) to start on the first non-space after
the string "Dnsmasq version", we fail to parse this format of the
version string.
Rather than spending a bunch of time trying to get pihole to change
that, we can just make our parsing more permissive - after searching
for "Dnsmasq version", we'll skip ahead to the first decimal digit,
rather than just the first non-space.
(NB: The features we're checking for purely by looking at version
number have been in all releases of dnsmasq since at least 2012, so we
could actually just remove the reading of the version number
completely. However it's possible (although *highly* unlikely)
that some new feature would be added to dnsmasq in the future and we
would need to add that code back.)
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/29
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function skips over the beginning of a string until it reaches a
decimal digit (0-9) or the NULL at the end of the string. The original
pointer is modified in place (similar to virSkipSpaces()).
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
qemu's qcow2 driver allows control of the metadata cache of qcow2 driver
by the 'cache-size' property. Wire it up to the recently introduced
elements.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to the domain config code it may be beneficial to control the
cache size of images introduced as snapshots into the backing chain.
Wire up handling of the 'metadata_cache' element.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In certain specific cases it might be beneficial to be able to control
the metadata caching of storage image format drivers of a hypervisor.
Introduce XML machinery to set the maximum size of the metadata cache
which will be used by qemu's qcow2 driver.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unify the code with other places using virXMLFormatElement.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Enable parsing of backing store strings containing the native 'nfs'
protocol specification.
Signed-off-by: Ryan Gahagan <rgahagan@cs.utexas.edu>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Implement support for the 'nfs' native protocol driver in the qemu
driver.
QEMU accepts numeric UID/GID for 'nfs' protocol file driver thus libvirt
needs to perform the lookup prior to passing it to qemu.
Signed-off-by: Ryan Gahagan <rgahagan@cs.utexas.edu>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
'nfs_user'/'nfs_group' represents the XML configuration.
'nfs_uid'/'nfs_gid' is internal store when libvirt looks up the user's
uid/gid in the system.
Signed-off-by: Ryan Gahagan <rgahagan@cs.utexas.edu>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Get rid of the 'cleanup' label and 'created' variable.
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
It is now doing way more than gathering the CPU data from a host as the
other scripts were merged in it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
cpu-cpuid.py was merged into cpu-gather.py and the script can handle
multiple files so there's no need for a loop around it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Use one variable per extracted property instead of reusing strings and
drop needless VIR_FREE calls.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similarly to startup of the VM qemu doesn't like setting throttling for
an empty drive. Just skip it since we do the correct thing once new
media is inserted.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/117
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Han Han <hhan@redhat.com>
The monitor code uses 'flags' for the flags of the monitor builder,
while in this function it's a different set of flags. All callers pass a
variable named 'cdevflags', so rename the argument to suit.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virJSONValueObjectRemoveKey can be used as direct replacement. Fix the
one caller and remove the duplicate function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Remove freeing/clearing of @props as the function doesn't guarantee that
it happens on success, rename the variable hodling copy of the alias and
use g_autofree to automatically free it and remove the cleanup label as
well as 'ret' variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The callers of qemuMonitorAddObject rely on the fact that @alias is
filled only when the object is added successfully. This is documented
but the code didn't behave like that.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
All callers of qemuMonitorJSONMakeCommandInternal will benefit from
making @arguments a double pointer and passing it to
virJSONValueObjectCreate directly which will clear it if it steals the
value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Prepare for a refactor of qemuMonitorJSONMakeCommandInternal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use automatic memory freeing and remove the 'cleanup' label and 'ret'
variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This allows simplification of the caller as well as will enable a later
refactor of qemuMonitorJSONMakeCommandInternal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The lookup didn't do anything apart from comparing the sysfs paths
anyway since that's what makes each mdev unique.
The most ridiculous usage of the old logic was in
virHostdevReAttachMediatedDevices where in order to drop an mdev
hostdev from the list of active devices we first had to create a new
mdev and use it in the lookup call. Why couldn't we have used the
hostdev directly? Because the hostdev and mdev structures are
incompatible.
The way mdevs are currently removed is via a write to a specific sysfs
attribute. If you do it while the machine which has the mdev assigned
is running, the write call may block (with a new enough kernel, with
older kernels it would return a write error!) until the device
is no longer in use which is when the QEMU process exits.
The interesting part here comes afterwards when we're cleaning up and
call virHostdevReAttachMediatedDevices. The domain doesn't exist
anymore, so the list of active hostdevs needs to be updated and the
respective hostdevs removed from the list, but remember we had to
create an mdev object in the memory in order to find it in the list
first which will fail because the write to sysfs had already removed
the mdev instance from the host system.
And so the next time you try to start the same domain you'll get:
"Requested operation is not valid: mediated device <path> is in use by
driver QEMU, domain <name>"
Fixes: https://gitlab.com/libvirt/libvirt/-/issues/119
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We set the pointer to some garbage packed structure data without
knowing whether we were actually handling the type of device we
expected to be handling. On its own, this was harmless, because we'd
never use the pointer as we'd skip the device if it were not the
expected type. However, it's better to make the logic even more
explicit - we first check the device and only when we're sure we have
the expected type we then update the pointer shortcut.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virDeviceHasPCIExpressLink() wasn't checking that pcie_cap_pos was
valid before attempting to use it, which could lead to reading the
byte at offset 0 + PCI_CAP_ID_EXP instead of [valid offset] +
PCI_CAP_ID_EXP. In particular, this could happen for "integrated" PCI
devices (those that are on the PCIe root complex). If it happened that
the byte from the wrong address had the "right" bit set, then it would
lead to us innappropriately believing that Express Link info was
available when it wasn't, and the node device driver would then log an
error like this:
virPCIDeviceGetLinkCapSta:2754 :
internal error: pci device 0000:00:18.0 is not a PCI-Express device
during a libvirtd restart. (this didn't ever occur until after
virPCIDeviceIsPCIExpress() was made more intelligent in commit
c00b6b1ae, which hasn't yet been in any official release)
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The two scenarios were found by Coverity after a seemingly-unrelated
change to virLXCProcessSetupInterfaceTap() (in commit ecfc2d5f43), and
explained by John Ferlan here:
https://www.redhat.com/archives/libvir-list/2020-December/msg00810.html
To re-explain:
a) On entry to virLXCProcessSetupInterfaceTap() if net->ifname != NULL
then a copy of net->ifname is made into parentVeth, and a reference
to *that* pointer is sent down to virNetDevVethCreate().
b) If parentVeth (aka net->ifname) is a template name (e.g. "blah%d"),
then virNetDevVethCreate() calls virNetDevGenerateName(), and if
virNetDevGenerateName() successfully generates a usable name
(e.g. "blah27") then it will free the original template string
(which is pointed to by net->ifname and by parentVeth), then
replace the pointer in parentVeth with a pointer to the new
string. Note that net->ifname still points to the now-freed
template string.
c) returning back up to virLXCProcessSetupInterfaceTap(), we check if
net->ifname == NULL - it *isn't* (still contains stale pointer to
template string), so we don't replace it with the pointer to the new
string that is in parentVeth.
d) Result: the new string is leaked once we return from
virLXCProcessSetupInterfaceTap(), while there is a dangling pointer
to the old string in net->ifname.
There is also a leak if there is a failure somewhere between steps (b)
and (c) above - the failure cleanup in virNetDevVethCreate() will only
free the newly-generated parentVeth string if the original pointer was
NULL (narrator: "It wasn't."). But it's a new string allocated by
virNetDevGenerateName(), not the original string from net->ifname, so
it really does need to be freed.
The solution is to make a copy of the entire original string into a
g_autofree pointer, then iff everything is successful we g_free() the
original net->ifname and replace it by stealing the string returned by
virNetDevVethCreate().
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In all cases *except* when parsing status XML as libvirt is being
restarted, the XML parser will delete any manually specified interface
name (aka "<target dev='blah'/>" aka net->ifname) that could have been
generated by virNetDevGenerateName(). This means that during the setup
when a domain is being started (e.g. during
virLXCProcessSetupInterfaceTap()) it is pointless to call
virNetDevReserveName() with any setting of net->ifname that has come
from the XML parser - it is guaranteed to not fit the pattern of any
auto-generated name, and so the call is just a NOP anyway.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Due to missing pdpe1gb support in the host CPU data, the CPU is still
incorrectly detected as Westmere-IBRS for host capabilities because we
don't have the option to disable features included in the base model
there.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
When defining/creating a network the bridge name may be filled in
automatically by libvirt (if none provided in the input XML or
the one provided is a pattern, e.g. "virbr%d"). During the
bridge name generation process a candidate name is generated
which is then checked with the rest of already defined/running
networks for collisions.
Problem is, that there is no mutex guarding this critical section
and thus if two threads line up so that they both generate the
same candidate they won't find any collision and the same name is
then stored.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/78
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
The @fds member of qemuMonitorFdsetInfo struct is an array and as
such, it's allocated in qemuMonitorJSONQueryFdsetsParse() but not
freed in qemuMonitorFdsetsFree().
Fixes: b8998cc670
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
@tmp that was copied just above is leaked on plain return.
The issue is found by Coverity.
Patch that inroduced a leak:
d4439a6b8 : src: adopt to VIR_DRV_SUPPORTS_FEATURE return -1
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Fixes compiler error:
src/qemu/qemu_migration.c:4814:20: error: ‘dstOffline’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
4814 | if (offline && !dstOffline) {
The commit that introduced the error:
910b94df: qemu: adopt to VIR_DRV_SUPPORTS_FEATURE return -1
Signed-off-by: Nick Shyrokovskiy <nshyrokovskiy@gmail.com>
Changes to a virtio network device such as
<interface type="network">
<model type="virtio"/>
<driver iommu="on" ats="on"/> <!-- this line added -->
...
</interface>
were quietly dismissed by `virsh update-device ... --live`.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Otherwise we can get misleading error messages. One example is when connection
is broken we got "this function is not supported by the connection driver:
virDomainMigrate3" from virDomainMigrate3.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Otherwise in some places we can mistakenly report 'unsupported' error instead
of root cause. So let's handle root cause explicitly from the macro.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Otherwise in some places we can mistakenly report 'unsupported' error instead
of root cause. So let's handle root cause explicitly from the macro.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Otherwise in some places we can mistakenly report 'unsupported' error instead
of root cause. So let's handle root cause explicitly from the macro.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When an interface has some bandwidth limitation set (it's root
qdisc is htb in that case) but this gets cleared out via public
API call (virDomainSetInterfaceParameters() or
virDomainUpdateDeviceFlags()) then virNetDevBandwidthSet() clears
out whatever qdiscs were set on the interface and kernel places
the default qdisc at the root. What we need to do next is to
replace the root qdisc with the one we want.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1329644
Fixes: 0b66196d86
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
While the code that's setting default qdisc is clever enough to
not overwrite any bandwidth (potentially) set by
virNetDevBandwidthSet() (and thus the root qdisc htb is not
replaced with noqueue), it does print a debug message when that's
the case. It's needless. We can set the root qdisc beforehand and
let virNetDevBandwidthSet() overwrite it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some secdrivers (typically SELinux driver) generate unique
dynamic seclabel for each domain (unless a static one is
requested in domain XML). This is achieved by calling
qemuSecurityGenLabel() from qemuProcessPrepareDomain() which
allocates unique seclabel and stores it in domain def->seclabels.
The counterpart is qemuSecurityReleaseLabel() which releases the
label and removes it from def->seclabels. Problem is, that with
current code the qemuProcessStop() may still want to use the
seclabel after it was released, e.g. when it wants to restore the
label of a disk mirror.
What is happening now, is that in qemuProcessStop() the
qemuSecurityReleaseLabel() is called, which removes the SELinux
seclabel from def->seclabels, yada yada yada and eventually
qemuSecurityRestoreImageLabel() is called. This bubbles down to
virSecuritySELinuxRestoreImageLabelSingle() which find no SELinux
seclabel (using virDomainDefGetSecurityLabelDef()) and this
returns early doing nothing.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1751664
Fixes: 8fa0374c5b
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The only reason why virstoragefile.h needs to be included in virfile.h
is that virFileNBDDeviceAssociate() takes virStorageFileFormat argument.
The function doesn't need the enum value as it converts the value to
string and uses only that.
Change the argument to string which will allow us to remove that
include.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
All these headers are indirectly included provided by virfile.h having
virstoragefile.h which will be removed in the following patch.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The function doesn't take virStorageSource as argument and has nothing
in common with virStorageSource or storage file.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Function virQEMUBuildQemuImgKeySecretOpts is not used anywhere else
so there is no need to have it in util.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The last usage outside of tests was removed by commit
<780f8c94ca8b3dee7eb59c1bfbc32f672f965df8>.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The last user was removed by commit
<40f0e0348dfc84f28a500e262c4953b0d3b44fa0>.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Currently, swtpm TPM state file is removed when a transient domain is
powered off or undefined. When we store TPM state on a shared storage
such as NFS and use transient domain, TPM states should be kept as it is.
Add per-TPM emulator option `persistent_sate` for keeping TPM state.
This option only works for the emulator type backend and looks as follows:
<tpm model='tpm-tis'>
<backend type='emulator' persistent_state='yes'/>
</tpm>
Signed-off-by: Eiichi Tsukata <eiichi.tsukata@nutanix.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The kernel refuses to set guest TSC frequency less than a minimum
frequency or greater than maximum frequency (both computed based on the
host TSC frequency). When writing the libvirt code with a reversed logic
(return success when the requested frequency falls within the tolerance
interval) I forgot to include the boundaries.
Fixes: d8e5b45600https://bugzilla.redhat.com/show_bug.cgi?id=1839095
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Refactor in 0316c28a45 used incorrect source variable to initialize
the variable which holds the name of the bitmap which needs to be
deleted after the backup job finishes. This resulted into deleting the
source bitmap of the backup rather than the temporary one.
Use 'dd->incrementalBitmap' which holds the temporary bitmap name
instead of 'dd->backupdisk->incremental' which holds the name of the
source bitmap which is used by the backup.
Fixes: 0316c28a45
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1908647
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
