Peter Krempa [Fri, 23 Sep 2022 11:34:36 +0000 (13:34 +0200)]
conf: domain: Remove virDomainObjParseNode
virDomainObjParseFile is the only caller of virDomainObjParseNode.
The code can be merged into it, simplified by using virXMLParse and
the function removed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 22 Sep 2022 16:02:50 +0000 (18:02 +0200)]
conf: backup: Remove virDomainBackupDefParseNode
Rename virDomainBackupDefParse to virDomainBackupDefParseXML and use
it in place of virDomainBackupDefParseNode. This is possible as
virXMLParse can be used to replace XPath context allocation and root
node checking.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 22 Sep 2022 15:00:25 +0000 (17:00 +0200)]
conf: storage: Remove virStoragePoolDefParseNode
Replace it by proper use of virXMLParse to validate the root node and
allocate the context. The use in the test driver can be directly
replaced by virStoragePoolDefParseXML as both are validated.
The change to the storage driver isn't trivial though as it requires
careful xpath context juggling to parse the nested volumes properly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 22 Sep 2022 13:47:40 +0000 (15:47 +0200)]
virNWFilterBindingDefParse: Properly use virXMLParse
Fetch the XPath context and validate the node by using virXMLParse's
features.
This allows to completely remove virNWFilterBindingDefParseNode as
all callers now properly validate the root element name and have a XPath
context handy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
virVBoxSnapshotConfGetRWDisksPathsFromLibvirtXML and
virVBoxSnapshotConfGetRODisksPathsFromLibvirtXML were doing the same
thing, except for one XPath query.
Factor out the common code into a helper and bring it up to modern
standard.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 22 Sep 2022 12:30:53 +0000 (14:30 +0200)]
util: xml: Expose all arguments of virXMLParseHelper in virXMLParse macro
The generic helper also has helper code to validate the root element and
create an XPath context. Many places in the code duplicate code for
doing these operations.
Extend the helper to provide all arguments and fix all callers.
In many cases this patch refactors the passing of the 'validate'
field into a separate variable to avoid quirky looking arguments.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Erik Skultety [Thu, 6 Oct 2022 08:40:35 +0000 (10:40 +0200)]
ci: integration: Update the perl CI job names
libvirt-derived repos recently changed the way how and when CI
containers are built and for that a different naming scheme was adopted
to differentiate between the 2. Update the integration pipeline config
to reflect this change.
Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Stefan Berger [Tue, 4 Oct 2022 13:38:14 +0000 (09:38 -0400)]
qemu: tpm: Remove TPM state after successful migration
This patch 'fixes' the behavior of the persistent_state TPM domain XML
attribute that intends to preserve the state of the TPM but should not
keep the state around on all the hosts a VM has been migrated to. It
removes the TPM state directory structure from the source host upon
successful migration when non-shared storage is used. Similarly, it
removes it from the destination host upon migration failure when
non-shared storage is used.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Stefan Berger [Tue, 4 Oct 2022 13:38:13 +0000 (09:38 -0400)]
qemu: Add UNDEFINE_TPM and UNDEFINE_KEEP_TPM flags
Add UNDEFINE_TPM and UNDEFINE_KEEP_TPM flags to qemuDomainUndefineFlags()
API and --tpm and --keep-tpm to 'virsh undefine'. Pass the
virDomainUndefineFlagsValues via qemuDomainRemoveInactive()
from qemuDomainUndefineFlags() all the way down to
qemuTPMEmulatorCleanupHost() and delete TPM storage there considering that
the UNDEFINE_TPM flag has priority over the persistent_state attribute
from the domain XML. Pass 0 in all other API call sites to
qemuDomainRemoveInactive() for now.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virpcivpd: reduce errors in log due to invalid VPD
Sadly some devices provide invalid VPD data even with fully updated
firmware. Former hardning like 600f580d "PCI VPD: Skip fields with
invalid values" have already helped for those to some extent.
But if one happens to have such a device installed in the system,
despite all other things working properly the log potentially
flooded with messages like:
internal error: The keyword is not comprised only of uppercase ASCII
letters or digits
internal error: A field data length violates the resource length boundary.
The user can't do anything about it to change that, they will be there on
any libvirt restart and potentially distract from other more important
issues.
Since the vpd decoding is implemented rather resilient (if parsing fails
all goes on fine, the respective device just has no VPD data populated
eventually) we can lower those from virReportError(VIR_ERR_INTERNAL_ERROR
to just VIR_INFO. If needed for debugging people can set the level
accordingly, but otherwise we would no more fill the logs with errors
without a strong reason.
Fixes: https://launchpad.net/bugs/1990949 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Riscv64 usually uses u-boot as external -kernel and a loader from
the open implementation of RISC-V SBI. The paths for those binaries
as packaged in Debian and Ubuntu are in paths which are usually
forbidden to be added by the user under /usr/lib...
People used to start riscv64 guests only manually via qemu cmdline,
but trying to encapsulate that via libvirt now causes failures when
starting the guest due to the apparmor isolation not allowing that:
virt-aa-helper: error: skipped restricted file
virt-aa-helper: error: invalid VM definition
Explicitly allow the sub-paths used by u-boot-qemu and opensbi
under /usr/lib/ as readonly rules.
Fixes: https://launchpad.net/bugs/1990499 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It probes for the cssid-unrestricted property of
virtual-css-bridge, which was introduced in QEMU v2.12 by:
commit 99577c492fb2916165ed9bc215f058877f0a4106
s390x/css: unrestrict cssids
Since we bumped the minimum QEMU version to 4.2.0, assume
this property is always present.
Signed-off-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
rpc: fix memory leak in virNetServerClientNew and virNetServerProgramDispatchCall
In virNetServerProgramDispatchCall, The arg is passed as a void*
and used to point to a certain struct depended on the dispatcher,
so I think it's the memory of the struct's member that leaks and
this memory shuld be freed by xdr_free.
In virNetServerClientNew, client->rx is assigned by invoking
virNetServerClientNew, but isn't freed if client->privateData's
initialization failed, which leads to a memory leak. Thanks to
Liang Peng's suggestion, put virNetMessageFree(client->rx) into
virNetServerClientDispose() to release the memory.
Signed-off-by: jiangjiacheng <jiangjiacheng@huawei.com> Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Peter Krempa [Fri, 16 Sep 2022 15:56:59 +0000 (17:56 +0200)]
virDomainNetDefParseXML: Refactor parsing of <virtualport>
Base whether virtualport is supported for a given interface on a new
variable named 'virtualport_flags' which also configures the parser for
the virtualports subelement and fill it in the appropriate interface
type branches.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
VIR_XPATH_NODE_AUTORESTORE_NAME is a more generic version of the
VIR_XPATH_NODE_AUTORESTORE macro used to save the 'node' inside a XPath
context struct. The new macro allows specifying the name of the variable
used to save the context so that it can be used multiple times inside a
function's nested scopes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Fri, 16 Sep 2022 13:50:54 +0000 (15:50 +0200)]
virDomainNetDefParseXML: Extract network device model earlier
Move the code fetching the model of the net device before the main code
parsing individual device types so that the data is available before the
upcoming refactor.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 15 Sep 2022 16:13:30 +0000 (18:13 +0200)]
virDomainNetDefParseXML: Convert parsing of 'source_node' to a switch() statement
Convert the individual 'if' clauses to a switch statement.
By moving the check that 'source_node' is non-null inside of each case
rather we will be able to move more type specific code into the switch
statement when it will be refactored in subsequent patches.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Fri, 16 Sep 2022 07:14:42 +0000 (09:14 +0200)]
util: xml: Adjust documentation of virXMLPropString
All callers treat NULL as if the string is not present in the XML.
Adjust the description so that it's implied that it's not an error and
thus also no error reporting is expected.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 15 Sep 2022 16:04:12 +0000 (18:04 +0200)]
virDomainNetIPInfoParseXML: Don't force callers to set proper 'ctxt->node'
In certain cases it's inconvenient to move the XPath's context current
node in the caller. Add a 'node' argument and override it inside the
function. VIR_XPATH_NODE_AUTORESTORE handles the cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pavel Hrdina [Mon, 26 Sep 2022 16:33:20 +0000 (18:33 +0200)]
spec: add systemd-rpm-macros build dependency
We should explicitly depend on this package as we use some macros
defined by files that are installed from systemd-rpm-macros.
Currently the build works only because some of our other build
dependencies pull in systemd which will install systemd-rpm-macros if
rpm-build is installed as well.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Wed, 28 Sep 2022 09:05:47 +0000 (11:05 +0200)]
virgdbusmock: Mock g_dbus_connection_call_with_unix_fd_list_sync() only on UNIX-like systems
As of GLib commit c9874f817be51d3b652457daef3b10766b59db9a,
relesed in GLib 2.73, the g_dbus_connection_call_with_unix_fd_list_sync()
function is not defined always, only when G_OS_UNIX condition is
set. This is also the reason why our virGDBusCallMethodWithFD()
function is guarded with that macro. But virgdbusmock is compiled
always, even on !UNIX systems, e.g. mingw. Therefore, we need to
use the same macro to condition compile its mock.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
virdomainjob: check if cb is not NULL before dereferencing
The callback struct does not always have to be set which could
cause a dereferencing of a NULL pointer. This patch adds check
against NULL in missing places before dereferencing.
Signed-off-by: Kristina Hanicova <khanicov@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> Signed-off-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Wed, 28 Sep 2022 08:12:36 +0000 (10:12 +0200)]
qemuProcessReconnect: Don't build memory paths
Let me take you on a short trip to history. A long time ago,
libvirt would configure all QEMUs to use $hugetlbfs/libvirt/qemu
for their hugepages setup. This was problematic, because it did
not allow enough separation between guests. Therefore in
v3.0.0-rc1~367 the path changed to a per-domain basis:
$hugetlbfs/libvirt/qemu/$domainShortName
And to help with migration on daemon restart a call to
qemuProcessBuildDestroyMemoryPaths() was added to
qemuProcessReconnect() (well, it was named
qemuProcessBuildDestroyHugepagesPath() back then, see
v3.10.0-rc1~174). This was desirable then, because the memory
hotplug code did not call the function, it simply assumes
per-domain paths to exist. But this changed in v3.5.0-rc1~92
after which the per-domain paths are created on memory hotplug
too.
Therefore, it's no longer necessary to create these paths in
qemuProcessReconnect(). They are created exactly when needed
(domain startup and memory hotplug).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Wed, 28 Sep 2022 07:53:47 +0000 (09:53 +0200)]
qemuNamespaceMknodOne: Call g_file_read_link() in async-signal-safe fashion
When creating a node in QEMU's namespace the whole link chain is
created with it. Here, we use g_file_read_link() from the child
(running inside the namespace) to learn whether a link exists and
points to expected target. Now, when building the namespace there
can't be any symlinks and this g_file_read_link() returns NULL
always. And because we pass a local GError variable to it, glib
tries to set it to a localized error message. This comes with
creating a (static) hash table inside of g_strerror() and is
guarded with a mutex. The hash table is also allocated using
GSlice allocator instead of g_malloc, and since the latter is
safe to use after fork (because it's documented to use plain
malloc), glib went with the former, naturally. Now, GSlice
allocator has plenty of internal mutexes and thus hitting a
locked mutex is not that hard.
Fortunately, we don't care about any error from
g_file_read_link() and thus we can pass NULL which avoids calling
g_strerror().
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2120965 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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