Iterating over all child elements of a node does not require xpath.
By doing away with xpath for this code, the code can be simplified.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
`feature` is always one of the values listed in the switch,
ensured by `virDomainKVMTypeFromString` above.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Iterating over all child elements of a node does not require xpath.
By doing away with xpath for this code, the code can be simplified.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Iterating over all child elements of a node does not require xpath.
By doing away with xpath for this code, the code can be simplified.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Iterating over all child elements of a node does not require xpath.
By doing away with xpath for this code, the code can be inlined and
simplified. This also removes the re-use of `nodes`, elimininating
two VIR_FREEs.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Vast majority of device types is not supported by the Cloud-Hypervisor
driver. Simplify the error reporting by using
virDomainDeviceTypeToString.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Now that the minimum supported Xen version has bumped to 4.9, all
uses of LIBXL_HAVE_* that are included in Xen 4.9 can be removed
from the libxl driver.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When removing check for return value of VIR_EXPAND_N this place was
incorrectly modified causing failure to start a VM with cputune
memorytune configured with useless error message:
error: Failed to start domain 'vm1'
error: An error occurred, but the cause is unknown
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1973094
Fixes: 7d2fd6ef01
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virISCSIDirectScanTargets now returns a GStrv, so we can use automatic
cleanup for it and get rid of the cleanup section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Count the elements in advance rather than using VIR_APPEND_ELEMENT and
ensure that there's a NULL terminator for the string list so it's GStrv
compatible.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Using an allocated version together with copying the
host/initiator/device portions into it allows us to switch to automatic
clearing rather than open-coding it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of trying to match devices passed in based on the monitor
detecting the number of devices that were used in the domain
definition, use the deviceValidateCallback to evaluate if
unsupported devices are used.
This allows the compiler to detect when new device types are added
that need to be checked.
Signed-off-by: William Douglas <william.douglas@intel.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Originally qemuDomainAttachNetDevice() would wait until the cleanup at
the very end of the function to add newly hotplugged interfaces to the
domain's nets list. commit 7b8bec4560 modified it to add the new
interface to the nets list earlier (but not all the way at the
beginning of the function either, because there are some operations
(PCI address assignment in particular) that need the new device to not
yet be visible in the domaindef).
But hostdev interfaces short-circuit past most of the body of
qemuDomainAttachNetDevice() (since none of it applies to hostdev
interfaces). In the past that was okay, but since the line that adds
the new interface to the domaindef's nets list is in that "most of the
body", after that commit hotplugged hostdev interfaces are no longer
being properly added to the domaindef nets list, so they don't show up
in the status XML or the virsh domiflist output.
It really *is* important to add interfaces to the nets list earlier,
so we can't revert commit 7b8bec4560, and we also can't move the
insert to common code *earlier* in the function, so instead this patch
duplicates the VIR_APPEND_ELEMENT_COPY() just before the code path for
hostdev interfaces jumps to cleanup.
Resolves: https://bugzilla.redhat.com/1972468
Fixes: 7b8bec4560
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When determining what socket path to connect to for a given URI we will
- Connect to the driver specific daemon if its UNIX socket exists
- Connect to libvirtd if its UNIX socket exists
- If non-root, auto-spawn a daemon based on the default mode
Historically the last point would result in spawning libvirtd, but with
this change we now spawn a modular daemon. Remote client probing logic
will pick a specific hypervisor daemon to connect to when the URI is
NULL.
Tested-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that the remote driver itself can probe for listening sockets /
running daemons, virtproxyd doesn't need to probe URIs itself. Instead
it can just delegate to the remote driver.
Tested-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
With the traditional libvirtd, the virConnectOpen call will probe active
drivers server side to find which one to use when the URI is NULL/empty.
With the modular daemons though, the remote client does not know which
daemon to connect in the first place, so we can't rely on virConnectOpen
probing. Currently the virtproxyd daemon has code to probe for a
possible driver by looking at which sockets are listening or which
binaries are installed. The remote client can thus connect to virtproxyd
which in turn can connect to a real hypervisor driver.
The virtproxyd probing code though isn't something that needs to live in
virtproxyd. By moving it into the remote client we can get probing
client side in all scenarios and avoid the extra trip via virtproxyd in
the common case.
Tested-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When virtproxyd gets a NULL URI, it needs to implement probing logic
similar to that found in virConnectOpen. The latter can't be used
directly since it relied on directly calling into the internal drivers
in libvirtd. virtproxyd approximates this behaviour by looking to see
what modular daemon sockets exist, or what daemon binaries are installed.
This same logic is also going to be needed when the regular libvirt
remote client switches to prefer modular daemons by default, as we
don't want to continue spawning libvirtd going forward.
Tested-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The libxl driver supports xen:///system URLs and the daemon socket
uses 'virtxend' as the socket prefix.
Reported-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When writing the memory snapshot into an existing file don't remove it
if the snapshot fails later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'file' is too generic to know what's going on. Rename it to
'memorysnapshotfile'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the snapshot disk type from the definition now that we validate that
it matches.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The code executed later when creating a snapshot makes all decisions
based on the configured type rather than the actual type of the existing
file, while the check whether the file exists is based solely on the
on-disk type.
Since a block device is allowed to exist even when not reusing existing
files in contrast to regular files this creates a potential for a block
device to squeak past the check but then be influenced by other code
executed later. Specifically this is a problem when creating a snapshot
with the following XML:
<domainsnapshot>
<disks>
<disk name='vdb' type='file'>
<source file='/dev/sdb'/>
</disk>
</disks>
</domainsnapshot>
If the snapshot creation fails, '/dev/sdb' will be removed because it's
considered to be a regular file by the cleanup code.
Add a check that will force that the configured type matches the on-disk
state.
Additional supporting reason is that qemu stopped to accept block
devices with the 'file' backend, thus the above configuration will not
work any more. This allows us to fail sooner.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1972145
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In case when the snapshot target is of VIR_STORAGE_TYPE_BLOCK type and
doesn't exist libvirt won't be able to create it. Reject such a config
sooner.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Separate the 'else if' branches into nested conditions so that it's more
obvious when we'll be adding additional checks later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virQEMUCapsFillDomainDeviceGraphicsCaps fills data needed both for
validation of the graphics type and also for correct display in the
(dom)capablities XML.
Signal the support for egl-headless only when qemu has the capability.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Next commit will modify the code so that it validates whether
egl-headless is present. Certain tests need to get the egl-headless
capability to keep working properly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
egl-headless graphics can be compiled out in qemu so we need to be able
to know whether the given qemu version support it.
Base the capability on the presence of the 'egl-headless' member in
'query-display-options' or imply it if 'query-display-options' is not
supported as we implied it before for all versions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Platforms supported by libvirt have the following Xen versions
openSUSE Leap 15.2: 4.13
openSUSE Leap 15.3: 4.14
Fedora 33: 4.14
Ubuntu 18.04: 4.9
Ubuntu 20.04: 4.11
Debian Stable: 4.11
Bumping the minimum version doesn't allow us to drop much code, but it
does provide better alignment with libvirt's platform support statement.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The DAC security driver has an option to register a callback that
is called instead of chown(). So far QEMU is the only user of
this feature and it's used to set labels on non-local disks (like
gluster), where exists notion of owners but regular chown() can't
be used.
However, this callback (if set) is called always, even for local
disks. And thus the QEMU's implementation duplicated parts of the
DAC driver to deal with chown().
If the DAC driver would call the callback only for non-local
disks then the QEMU's callback can be shorter.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
I must admit, I have no idea why we build such POSIX dependent
code as DAC driver for something such not POSIX as WIN32. Anyway,
the code which is supposed to set error is not doing that. The
proper way is to mimic what chown() does:
On error, -1 is returned, and errno is set to indicate the error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As shown in the previous commit, @path can be NULL. However, in
that case @src->path is also NULL. Therefore, trying to "fix"
@path to be not NULL is not going to succeed. The real value of
NULLSTR() is in providing a non-NULL string for error reporting.
Well, that can be done in the error reporting without overwriting
argument.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virSecurityDACSetOwnershipInternal() function accepts two
arguments (among others): @path and @src. The idea being that in
some cases @path is NULL and @src is not and then @path is filled
from @src->path. However, this is done in both callers already
(because of seclabel remembering/recall). Therefore, this code in
virSecurityDACSetOwnershipInternal() is dead, effectively.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The virSecurityDACSetOwnershipInternal() has two callers and in
both the private data (@priv) is obtained via
virSecurityManagerGetPrivateData(). But in case of DAC driver the
private data can never be NULL. This is because the private data
is allocated in virSecurityManagerNewDriver() according to
.privateDataLen attribute of secdriver. In case of DAC driver the
attribute is set to sizeof(virSecurityDACData).
NB, no other function within DAC driver checks for !priv.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce a function that frees individual items on the chown
list and declare and use g_autoptr() for it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When adding support for externally launched virtiofsd,
I was too liberal and did not require a target.
But the target is required, because it's passed to the
QEMU device, not to virtiofsd.
https://bugzilla.redhat.com/show_bug.cgi?id=1969232
Fixes: 12967c3e13
Fixes: 56dcdec1ac
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The NVRAM label is set in qemuSecuritySetAllLabel(). There's no
need to set its label upfront. In fact, setting it twice creates
an imbalance because it's unset only once which mangles seclabel
remembering. However, plain removal of the
qemuSecurityDomainSetPathLabel() undoes the fix for the original
bug (when dynamic ownership is off then the NVRAM is not created
with cfg->user and cfg->group but as root:root). Therefore, we
have to switch to virFileOpenAs() and pass cfg->user and
cfg->group and VIR_FILE_OPEN_FORCE_OWNER flag. There's no need to
pass VIR_FILE_OPEN_FORCE_MODE because the file will be created
with the proper mode.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1969347
Fixes: bcdaa91a27
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
