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Even when the user is not taking advantage of firmware
autoselection and instead manually providing all the necessary
information, in most cases they're still going to use firmware
builds that are provided by the OS vendor, are installed in
standard paths and come with a corresponding firmware
descriptor.
Similarly, even when the user is not guiding the autoselection
process by specifying the desired status of certain features
and instead is relying on the system-level descriptor priority
being set up correctly, libvirt will still ultimately decide to
use a specific descriptor, which includes information about the
firmware's features.
In both these cases, take the additional information that were
obtained from the firmware descriptor and reflect them back into
the domain XML, where they can be conveniently inspected by the
user and management applications alike.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that we no longer reject configurations that include both
this information and explicit firmware details, as long of
course as everything is internally consistent, and that we've
ensured that we produce maximally compatible XML on migration,
we can stop stripping this information at the end of the
firmware selection process.
There are several advantages to keeping this information around:
* if the user wants to change the firmware configuration for
an existing VM, they can simply drop the <loader> and
<nvram> elements, tweak the firmware autoselection parameters
and let libvirt pick a firmware that matches on the new
requirements;
* management applications can inspect the XML and easily
figure out firmware-related information without having to
reverse-engineer them based on some opaque paths.
Overall, this change makes things more transparent and easier to
understand. The improvement is so significant that, in a
follow-up commit, we're going to ensure that this information is
available in even more cases.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The combination of explicit firmware paths, which we now
produce in all cases, and firmware autoselection knobs is
explicitly rejected by libvirt 8.6.0 and newer.
Right now we produce inherently migratable XML in all cases,
since we always strip those bits, but that's going to change
soon. To prepare for that, make sure that we always skip the
problematic elements and attributes when preparing a
migratable XML.
The destination will simply receive a fully specified firmware
configuration, which is indistinguishable from one that was
manually provided by the user and is thus accepted by any old
version of libvirt, regardless of whether or not firmware
autoselection was used on the source host.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
libvirt 8.6.0 introduced these checks and very clearly delineated
two possible firmware selection scenarios: manual firmware
selection, where the user is responsible for providing all
information, and firmware autoselection, where a list of desired
features is provided and everything else is handled by libvirt.
In the interest of maintaining the clear separation between these
two scenarios, setting most attributes when firmware autoselection
is active will result in the configuration being rejected.
This works fine, but is unnecessarily restrictive: in most cases,
the additional information that the user has provided matches
the information that libvirt would have discovered on its own by
looking at firmware descriptors, and asking the user to scrub it
from the XML only result in pointless friction.
Remove these checks entirely.
Unsurprisingly, this results in a few test cases that were
rejected until now to suddenly start working and producing
sensible results.
The firmware-auto-efi-loader-path-nonstandard test case is
notable: while we can now enable the xml2xml part of the test,
the xml2argv part is still failing, although in a slightly
different way. This is expected: since the firmware binary is a
non-standard one, libvirt is unable to figure out the missing
information from a firmware descriptor, and the configuration
is still ultimately an invalid one. However, if we were to find
such a configuration on disk at daemon startup, we would not
ignore it completely and instead would offer the user a chance
to fix it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Right now there are a few scenarios in which we skip ahead, and
removing these exceptions will make for more consistent and
predictable behavior.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The requires-smm feature being present in a firmware descriptor
causes loader.secure=yes to be automatically chosen for the
domain, so we have to avoid this situation or the user's choice
will be silently subverted.
Note that we can't actually encounter loader.secure=no in this
function at the moment because of earlier checks, but that's
going to change soon.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Right now we have checks in place that ensure that explicit
paths are not provided when firmware autoselection has been
enabled, but that's going to change soon.
To prepare for that, take into account user-provided paths
during firmware autoselection if present, and discard all
firmware descriptors that don't contain matching information.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Right now we're checking that firmware descriptor masking works
as intended by creating an empty file matching 60-ovmf-sb.json
in name.
However, that firmware descriptors contains the details for a
perfectly valid and quite common situation: Secure Boot being
supported by the firmware build, but being effectively disabled
by the lack of certificates in the NVRAM template.
Unmask that firmware descriptor, and instead create a dummy one
that has higher priority than all other OVMF builds and points
to paths that are obviously incorrect, which should make it
easy to notice it getting accidentally unmasked in the future.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
These cover the same scenarios as the matching test cases for
autoselection.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is identical to the existing
firmware-auto-efi-loader-path-nonstandard test case, but uses
a standard firmware path.
Right now the two test cases behave identically, but that's
going to change in the future.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This test is intended to simulate the use of an OVMF firmware
image installed under a non-standard path. In order to make
such a configuration work, the user would have to provide
additional information.
Right now it doesn't matter, because the configuration is
rejected anyway, but the behavior is going to change slightly
in the future. Prepare by making the configuration more
complete and realistic.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This unifies the naming between the manual and automatic
selection cases, clarifies the contents of the tests and makes
room for more tests being added in the future.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
With its version 16.0, the LLVM's linker turned on
--no-undefined-version by default [1]. This breaks how we detect
--version-script= detection, because at the compile time there's
no library built yet that we can use to make --version-script=
happy. Unfortunately, meson does not provide a way to detect this
either [2].
But there's not much sense in detecting the argument either. We
already special case some systems (windows, darwin) and do the
check for others, which are expected to support versioned
symbols, because of ELF. Worst case scenario - the error is
reported during compile time rather than configure time.
1: https://reviews.llvm.org/D135402
2: https://github.com/mesonbuild/meson/issues/3047
Resolves: https://bugs.gentoo.org/902211
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The function name is already logged, and these can happen only as a
result of a programmer error.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Both callers in the VirtualBox driver handle the error and only
call this function with a non-NULL argument.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Both callers in the VirtualBox driver error out if the path
can't be fetched via VirtualBox APIs and abort on conversion error
from UTF-16 to UTF-8.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
over-writing a variable in inner while-loop without freeing previous memory
leaks it over time.
To fix this, we can just change scope of bank variable to the inner loop.
Signed-off-by: Shaleen Bathla <shaleen.bathla@oracle.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Fixes: 5c84485439
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The --disk-password argument was present in early impls of the patch but
replaced by the more generic --inject-secret argument.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently translated at 83.5% (8706 of 10416 strings)
Translation: libvirt/libvirt
Translate-URL: https://translate.fedoraproject.org/projects/libvirt/libvirt/cs/
Co-authored-by: Jan Tomko <jtomko@redhat.com>
Co-authored-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Jan Tomko <jtomko@redhat.com>
Currently translated at 83.5% (8706 of 10416 strings)
Translation: libvirt/libvirt
Translate-URL: https://translate.fedoraproject.org/projects/libvirt/libvirt/cs/
Co-authored-by: Daniel P. Berrange <berrange@redhat.com>
Co-authored-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virNumaNodeIsAvailable function is stubbed out when building
without libnuma, such that it just returns a constant value. When
CLang is optimizing, it does inter-procedural analysis across
function calls. When it sees that the call to virNumaNodeIsAvailable
returns a fixed constant, it elides the conditional check for errors
in the callers such as virNumaNodesetIsAvailable.
This is a valid optimization as the C standard declares that there
must only be one implementation of each function in a binary. This
is normally the case, but ELF allows for function overrides when
linking or at runtime with LD_PRELOAD, which is technically outside
the mandated C language behaviour.
So while CLang's optimization works fine at runtime, it breaks in our
test suite which aims to mock the virNumaNodeIsAvailable function so
that it has specific semantics regardless of whether libnuma is built
or not. The return value check optimization though means our mock
override won't have the right effect. The mock will be invoked, but
its return value is not used.
Potentially the same problem could be exhibited with GCC if certain
combinations of optimizations are enabled, though thus far we've
not seen it.
To be robust on both CLang and GCC we need to make it more explicit
that we want to be able to replace functions and thus optimization
of calls must be limited. Currently we rely on 'noinline' which
does successfully prevent inlining of the function, but it cannot
stop the eliding of checks based on the constant return value.
Thus we need a bigger hammer.
There are a couple of options to disable this optimization:
* Annotate a symbol as 'weak'. This is tells the compiler
that the symbol is intended to be overridable at linktime
or runtime, and thus it will avoid doing inter-procedural
analysis for optimizations. This was tried previously but
have to be reverted as it had unintended consequences
when linking .a files into our final .so, resulting in all
the weak symbol impls being lost. See commit
407a281a8e
* Annotate a symbol with 'noipa'. This tells the compiler
to avoid inter-procedural analysis for calls to just this
function. This would be ideal match for our scenario, but
unfortunately it is only implemented for GCC currently:
https://reviews.llvm.org/D101011
* The '-fsemantic-interposition' argument tells the optimizer
that any functions may be replaced with alternative
implementations that have different semantics. It thus
blocks any optimizations across function calls. This is
quite a harsh block on the optimizer, but it appears to be
the only one that is viable with CLang.
Out of those choices option (3) is the only viable option for
CLang. We don't want todo it for GCC though as it is such a
big hammer. Probably we should apply (2) for GCC, should we
experiance a problem in future.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Otherwise the build on armv7l breaks:
error: format ‘%lu’ expects argument of type
‘long unsigned int’, but argument 4 has type
‘size_t’ {aka ‘unsigned int’} [-Werror=format=]
Fixes: 1992ae40fa
Fixes: e239f7d0a8
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The newly added luks-any rbd encryption format in qemu
allows for opening both LUKS and LUKS2 encryption formats.
This commit enables libvirt uses to use this wildcard format.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This capability represents that qemu supports the "luks-any" encryption
format for RBD images.
Both LUKS and LUKS2 formats can be parsed using this wildcard format.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit enables libvirt users to use layered encryption
of RBD images, using the librbd encryption engine.
This allows opening of an encrypted cloned image
whose parent is encrypted with a possibly different encryption key.
To open such images, multiple encryption secrets are expected
to be defined under the encryption XML tag.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit changes the _qemuDomainStorageSourcePrivate struct
to support multiple secrets (instead of a single one before this commit).
This will useful for storage encryption requiring more than a single secret.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit changes the qemuBlockStorageSourceAttachData struct
to support multiple secrets (instead of a single one before this commit).
This will useful for storage encryption requiring more than a single secret.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Change secret aliases from %s-%s-secret0 to %s-%s-secret%lu,
which will later be used for storage encryption requiring more
than a single secret.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This capability represents that qemu supports the layered encryption
of RBD images, where a cloned image is encrypted with a possible
different encryption than its parent image.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
As of commit 9e3cc0ff5 the virtsecretd daemon does not timeout
while it keeps any ephemeral secrets.
https://bugzilla.redhat.com/show_bug.cgi?id=2035985
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Remove the reference to "running domains" for daemons that happily
exit while domains are running.
https://bugzilla.redhat.com/show_bug.cgi?id=2035985
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
In some translations, the RNG initials were mistranslated
as a random number generator.
Spell it out as RelaxNG to make it clearer.
Include the word 'schema' and quotes around the filename.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This brings the tool's list of features in sync with qemu
commit 9832009d9dd2386664c15cc70f6e6bfe062be8bd.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
